| /******************************************************************* |
| * This file is part of the Emulex Linux Device Driver for * |
| * Fibre Channel Host Bus Adapters. * |
| * Copyright (C) 2004-2009 Emulex. All rights reserved. * |
| * EMULEX and SLI are trademarks of Emulex. * |
| * www.emulex.com * |
| * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
| * * |
| * This program is free software; you can redistribute it and/or * |
| * modify it under the terms of version 2 of the GNU General * |
| * Public License as published by the Free Software Foundation. * |
| * This program is distributed in the hope that it will be useful. * |
| * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * |
| * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * |
| * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * |
| * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * |
| * TO BE LEGALLY INVALID. See the GNU General Public License for * |
| * more details, a copy of which can be found in the file COPYING * |
| * included with this package. * |
| *******************************************************************/ |
| |
| #include <linux/blkdev.h> |
| #include <linux/pci.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_cmnd.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsi_transport_fc.h> |
| #include <scsi/fc/fc_fs.h> |
| #include <linux/aer.h> |
| |
| #include "lpfc_hw4.h" |
| #include "lpfc_hw.h" |
| #include "lpfc_sli.h" |
| #include "lpfc_sli4.h" |
| #include "lpfc_nl.h" |
| #include "lpfc_disc.h" |
| #include "lpfc_scsi.h" |
| #include "lpfc.h" |
| #include "lpfc_crtn.h" |
| #include "lpfc_logmsg.h" |
| #include "lpfc_compat.h" |
| #include "lpfc_debugfs.h" |
| #include "lpfc_vport.h" |
| |
| /* There are only four IOCB completion types. */ |
| typedef enum _lpfc_iocb_type { |
| LPFC_UNKNOWN_IOCB, |
| LPFC_UNSOL_IOCB, |
| LPFC_SOL_IOCB, |
| LPFC_ABORT_IOCB |
| } lpfc_iocb_type; |
| |
| |
| /* Provide function prototypes local to this module. */ |
| static int lpfc_sli_issue_mbox_s4(struct lpfc_hba *, LPFC_MBOXQ_t *, |
| uint32_t); |
| static int lpfc_sli4_read_rev(struct lpfc_hba *, LPFC_MBOXQ_t *, |
| uint8_t *, uint32_t *); |
| static struct lpfc_iocbq *lpfc_sli4_els_wcqe_to_rspiocbq(struct lpfc_hba *, |
| struct lpfc_iocbq *); |
| static void lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *, |
| struct hbq_dmabuf *); |
| static IOCB_t * |
| lpfc_get_iocb_from_iocbq(struct lpfc_iocbq *iocbq) |
| { |
| return &iocbq->iocb; |
| } |
| |
| /** |
| * lpfc_sli4_wq_put - Put a Work Queue Entry on an Work Queue |
| * @q: The Work Queue to operate on. |
| * @wqe: The work Queue Entry to put on the Work queue. |
| * |
| * This routine will copy the contents of @wqe to the next available entry on |
| * the @q. This function will then ring the Work Queue Doorbell to signal the |
| * HBA to start processing the Work Queue Entry. This function returns 0 if |
| * successful. If no entries are available on @q then this function will return |
| * -ENOMEM. |
| * The caller is expected to hold the hbalock when calling this routine. |
| **/ |
| static uint32_t |
| lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe *wqe) |
| { |
| union lpfc_wqe *temp_wqe = q->qe[q->host_index].wqe; |
| struct lpfc_register doorbell; |
| uint32_t host_index; |
| |
| /* If the host has not yet processed the next entry then we are done */ |
| if (((q->host_index + 1) % q->entry_count) == q->hba_index) |
| return -ENOMEM; |
| /* set consumption flag every once in a while */ |
| if (!((q->host_index + 1) % LPFC_RELEASE_NOTIFICATION_INTERVAL)) |
| bf_set(lpfc_wqe_gen_wqec, &wqe->generic, 1); |
| |
| lpfc_sli_pcimem_bcopy(wqe, temp_wqe, q->entry_size); |
| |
| /* Update the host index before invoking device */ |
| host_index = q->host_index; |
| q->host_index = ((q->host_index + 1) % q->entry_count); |
| |
| /* Ring Doorbell */ |
| doorbell.word0 = 0; |
| bf_set(lpfc_wq_doorbell_num_posted, &doorbell, 1); |
| bf_set(lpfc_wq_doorbell_index, &doorbell, host_index); |
| bf_set(lpfc_wq_doorbell_id, &doorbell, q->queue_id); |
| writel(doorbell.word0, q->phba->sli4_hba.WQDBregaddr); |
| readl(q->phba->sli4_hba.WQDBregaddr); /* Flush */ |
| |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli4_wq_release - Updates internal hba index for WQ |
| * @q: The Work Queue to operate on. |
| * @index: The index to advance the hba index to. |
| * |
| * This routine will update the HBA index of a queue to reflect consumption of |
| * Work Queue Entries by the HBA. When the HBA indicates that it has consumed |
| * an entry the host calls this function to update the queue's internal |
| * pointers. This routine returns the number of entries that were consumed by |
| * the HBA. |
| **/ |
| static uint32_t |
| lpfc_sli4_wq_release(struct lpfc_queue *q, uint32_t index) |
| { |
| uint32_t released = 0; |
| |
| if (q->hba_index == index) |
| return 0; |
| do { |
| q->hba_index = ((q->hba_index + 1) % q->entry_count); |
| released++; |
| } while (q->hba_index != index); |
| return released; |
| } |
| |
| /** |
| * lpfc_sli4_mq_put - Put a Mailbox Queue Entry on an Mailbox Queue |
| * @q: The Mailbox Queue to operate on. |
| * @wqe: The Mailbox Queue Entry to put on the Work queue. |
| * |
| * This routine will copy the contents of @mqe to the next available entry on |
| * the @q. This function will then ring the Work Queue Doorbell to signal the |
| * HBA to start processing the Work Queue Entry. This function returns 0 if |
| * successful. If no entries are available on @q then this function will return |
| * -ENOMEM. |
| * The caller is expected to hold the hbalock when calling this routine. |
| **/ |
| static uint32_t |
| lpfc_sli4_mq_put(struct lpfc_queue *q, struct lpfc_mqe *mqe) |
| { |
| struct lpfc_mqe *temp_mqe = q->qe[q->host_index].mqe; |
| struct lpfc_register doorbell; |
| uint32_t host_index; |
| |
| /* If the host has not yet processed the next entry then we are done */ |
| if (((q->host_index + 1) % q->entry_count) == q->hba_index) |
| return -ENOMEM; |
| lpfc_sli_pcimem_bcopy(mqe, temp_mqe, q->entry_size); |
| /* Save off the mailbox pointer for completion */ |
| q->phba->mbox = (MAILBOX_t *)temp_mqe; |
| |
| /* Update the host index before invoking device */ |
| host_index = q->host_index; |
| q->host_index = ((q->host_index + 1) % q->entry_count); |
| |
| /* Ring Doorbell */ |
| doorbell.word0 = 0; |
| bf_set(lpfc_mq_doorbell_num_posted, &doorbell, 1); |
| bf_set(lpfc_mq_doorbell_id, &doorbell, q->queue_id); |
| writel(doorbell.word0, q->phba->sli4_hba.MQDBregaddr); |
| readl(q->phba->sli4_hba.MQDBregaddr); /* Flush */ |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli4_mq_release - Updates internal hba index for MQ |
| * @q: The Mailbox Queue to operate on. |
| * |
| * This routine will update the HBA index of a queue to reflect consumption of |
| * a Mailbox Queue Entry by the HBA. When the HBA indicates that it has consumed |
| * an entry the host calls this function to update the queue's internal |
| * pointers. This routine returns the number of entries that were consumed by |
| * the HBA. |
| **/ |
| static uint32_t |
| lpfc_sli4_mq_release(struct lpfc_queue *q) |
| { |
| /* Clear the mailbox pointer for completion */ |
| q->phba->mbox = NULL; |
| q->hba_index = ((q->hba_index + 1) % q->entry_count); |
| return 1; |
| } |
| |
| /** |
| * lpfc_sli4_eq_get - Gets the next valid EQE from a EQ |
| * @q: The Event Queue to get the first valid EQE from |
| * |
| * This routine will get the first valid Event Queue Entry from @q, update |
| * the queue's internal hba index, and return the EQE. If no valid EQEs are in |
| * the Queue (no more work to do), or the Queue is full of EQEs that have been |
| * processed, but not popped back to the HBA then this routine will return NULL. |
| **/ |
| static struct lpfc_eqe * |
| lpfc_sli4_eq_get(struct lpfc_queue *q) |
| { |
| struct lpfc_eqe *eqe = q->qe[q->hba_index].eqe; |
| |
| /* If the next EQE is not valid then we are done */ |
| if (!bf_get(lpfc_eqe_valid, eqe)) |
| return NULL; |
| /* If the host has not yet processed the next entry then we are done */ |
| if (((q->hba_index + 1) % q->entry_count) == q->host_index) |
| return NULL; |
| |
| q->hba_index = ((q->hba_index + 1) % q->entry_count); |
| return eqe; |
| } |
| |
| /** |
| * lpfc_sli4_eq_release - Indicates the host has finished processing an EQ |
| * @q: The Event Queue that the host has completed processing for. |
| * @arm: Indicates whether the host wants to arms this CQ. |
| * |
| * This routine will mark all Event Queue Entries on @q, from the last |
| * known completed entry to the last entry that was processed, as completed |
| * by clearing the valid bit for each completion queue entry. Then it will |
| * notify the HBA, by ringing the doorbell, that the EQEs have been processed. |
| * The internal host index in the @q will be updated by this routine to indicate |
| * that the host has finished processing the entries. The @arm parameter |
| * indicates that the queue should be rearmed when ringing the doorbell. |
| * |
| * This function will return the number of EQEs that were popped. |
| **/ |
| uint32_t |
| lpfc_sli4_eq_release(struct lpfc_queue *q, bool arm) |
| { |
| uint32_t released = 0; |
| struct lpfc_eqe *temp_eqe; |
| struct lpfc_register doorbell; |
| |
| /* while there are valid entries */ |
| while (q->hba_index != q->host_index) { |
| temp_eqe = q->qe[q->host_index].eqe; |
| bf_set(lpfc_eqe_valid, temp_eqe, 0); |
| released++; |
| q->host_index = ((q->host_index + 1) % q->entry_count); |
| } |
| if (unlikely(released == 0 && !arm)) |
| return 0; |
| |
| /* ring doorbell for number popped */ |
| doorbell.word0 = 0; |
| if (arm) { |
| bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1); |
| bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1); |
| } |
| bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released); |
| bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT); |
| bf_set(lpfc_eqcq_doorbell_eqid, &doorbell, q->queue_id); |
| writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr); |
| /* PCI read to flush PCI pipeline on re-arming for INTx mode */ |
| if ((q->phba->intr_type == INTx) && (arm == LPFC_QUEUE_REARM)) |
| readl(q->phba->sli4_hba.EQCQDBregaddr); |
| return released; |
| } |
| |
| /** |
| * lpfc_sli4_cq_get - Gets the next valid CQE from a CQ |
| * @q: The Completion Queue to get the first valid CQE from |
| * |
| * This routine will get the first valid Completion Queue Entry from @q, update |
| * the queue's internal hba index, and return the CQE. If no valid CQEs are in |
| * the Queue (no more work to do), or the Queue is full of CQEs that have been |
| * processed, but not popped back to the HBA then this routine will return NULL. |
| **/ |
| static struct lpfc_cqe * |
| lpfc_sli4_cq_get(struct lpfc_queue *q) |
| { |
| struct lpfc_cqe *cqe; |
| |
| /* If the next CQE is not valid then we are done */ |
| if (!bf_get(lpfc_cqe_valid, q->qe[q->hba_index].cqe)) |
| return NULL; |
| /* If the host has not yet processed the next entry then we are done */ |
| if (((q->hba_index + 1) % q->entry_count) == q->host_index) |
| return NULL; |
| |
| cqe = q->qe[q->hba_index].cqe; |
| q->hba_index = ((q->hba_index + 1) % q->entry_count); |
| return cqe; |
| } |
| |
| /** |
| * lpfc_sli4_cq_release - Indicates the host has finished processing a CQ |
| * @q: The Completion Queue that the host has completed processing for. |
| * @arm: Indicates whether the host wants to arms this CQ. |
| * |
| * This routine will mark all Completion queue entries on @q, from the last |
| * known completed entry to the last entry that was processed, as completed |
| * by clearing the valid bit for each completion queue entry. Then it will |
| * notify the HBA, by ringing the doorbell, that the CQEs have been processed. |
| * The internal host index in the @q will be updated by this routine to indicate |
| * that the host has finished processing the entries. The @arm parameter |
| * indicates that the queue should be rearmed when ringing the doorbell. |
| * |
| * This function will return the number of CQEs that were released. |
| **/ |
| uint32_t |
| lpfc_sli4_cq_release(struct lpfc_queue *q, bool arm) |
| { |
| uint32_t released = 0; |
| struct lpfc_cqe *temp_qe; |
| struct lpfc_register doorbell; |
| |
| /* while there are valid entries */ |
| while (q->hba_index != q->host_index) { |
| temp_qe = q->qe[q->host_index].cqe; |
| bf_set(lpfc_cqe_valid, temp_qe, 0); |
| released++; |
| q->host_index = ((q->host_index + 1) % q->entry_count); |
| } |
| if (unlikely(released == 0 && !arm)) |
| return 0; |
| |
| /* ring doorbell for number popped */ |
| doorbell.word0 = 0; |
| if (arm) |
| bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1); |
| bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released); |
| bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_COMPLETION); |
| bf_set(lpfc_eqcq_doorbell_cqid, &doorbell, q->queue_id); |
| writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr); |
| return released; |
| } |
| |
| /** |
| * lpfc_sli4_rq_put - Put a Receive Buffer Queue Entry on a Receive Queue |
| * @q: The Header Receive Queue to operate on. |
| * @wqe: The Receive Queue Entry to put on the Receive queue. |
| * |
| * This routine will copy the contents of @wqe to the next available entry on |
| * the @q. This function will then ring the Receive Queue Doorbell to signal the |
| * HBA to start processing the Receive Queue Entry. This function returns the |
| * index that the rqe was copied to if successful. If no entries are available |
| * on @q then this function will return -ENOMEM. |
| * The caller is expected to hold the hbalock when calling this routine. |
| **/ |
| static int |
| lpfc_sli4_rq_put(struct lpfc_queue *hq, struct lpfc_queue *dq, |
| struct lpfc_rqe *hrqe, struct lpfc_rqe *drqe) |
| { |
| struct lpfc_rqe *temp_hrqe = hq->qe[hq->host_index].rqe; |
| struct lpfc_rqe *temp_drqe = dq->qe[dq->host_index].rqe; |
| struct lpfc_register doorbell; |
| int put_index = hq->host_index; |
| |
| if (hq->type != LPFC_HRQ || dq->type != LPFC_DRQ) |
| return -EINVAL; |
| if (hq->host_index != dq->host_index) |
| return -EINVAL; |
| /* If the host has not yet processed the next entry then we are done */ |
| if (((hq->host_index + 1) % hq->entry_count) == hq->hba_index) |
| return -EBUSY; |
| lpfc_sli_pcimem_bcopy(hrqe, temp_hrqe, hq->entry_size); |
| lpfc_sli_pcimem_bcopy(drqe, temp_drqe, dq->entry_size); |
| |
| /* Update the host index to point to the next slot */ |
| hq->host_index = ((hq->host_index + 1) % hq->entry_count); |
| dq->host_index = ((dq->host_index + 1) % dq->entry_count); |
| |
| /* Ring The Header Receive Queue Doorbell */ |
| if (!(hq->host_index % LPFC_RQ_POST_BATCH)) { |
| doorbell.word0 = 0; |
| bf_set(lpfc_rq_doorbell_num_posted, &doorbell, |
| LPFC_RQ_POST_BATCH); |
| bf_set(lpfc_rq_doorbell_id, &doorbell, hq->queue_id); |
| writel(doorbell.word0, hq->phba->sli4_hba.RQDBregaddr); |
| } |
| return put_index; |
| } |
| |
| /** |
| * lpfc_sli4_rq_release - Updates internal hba index for RQ |
| * @q: The Header Receive Queue to operate on. |
| * |
| * This routine will update the HBA index of a queue to reflect consumption of |
| * one Receive Queue Entry by the HBA. When the HBA indicates that it has |
| * consumed an entry the host calls this function to update the queue's |
| * internal pointers. This routine returns the number of entries that were |
| * consumed by the HBA. |
| **/ |
| static uint32_t |
| lpfc_sli4_rq_release(struct lpfc_queue *hq, struct lpfc_queue *dq) |
| { |
| if ((hq->type != LPFC_HRQ) || (dq->type != LPFC_DRQ)) |
| return 0; |
| hq->hba_index = ((hq->hba_index + 1) % hq->entry_count); |
| dq->hba_index = ((dq->hba_index + 1) % dq->entry_count); |
| return 1; |
| } |
| |
| /** |
| * lpfc_cmd_iocb - Get next command iocb entry in the ring |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * |
| * This function returns pointer to next command iocb entry |
| * in the command ring. The caller must hold hbalock to prevent |
| * other threads consume the next command iocb. |
| * SLI-2/SLI-3 provide different sized iocbs. |
| **/ |
| static inline IOCB_t * |
| lpfc_cmd_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) |
| { |
| return (IOCB_t *) (((char *) pring->cmdringaddr) + |
| pring->cmdidx * phba->iocb_cmd_size); |
| } |
| |
| /** |
| * lpfc_resp_iocb - Get next response iocb entry in the ring |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * |
| * This function returns pointer to next response iocb entry |
| * in the response ring. The caller must hold hbalock to make sure |
| * that no other thread consume the next response iocb. |
| * SLI-2/SLI-3 provide different sized iocbs. |
| **/ |
| static inline IOCB_t * |
| lpfc_resp_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) |
| { |
| return (IOCB_t *) (((char *) pring->rspringaddr) + |
| pring->rspidx * phba->iocb_rsp_size); |
| } |
| |
| /** |
| * __lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called with hbalock held. This function |
| * allocates a new driver iocb object from the iocb pool. If the |
| * allocation is successful, it returns pointer to the newly |
| * allocated iocb object else it returns NULL. |
| **/ |
| static struct lpfc_iocbq * |
| __lpfc_sli_get_iocbq(struct lpfc_hba *phba) |
| { |
| struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; |
| struct lpfc_iocbq * iocbq = NULL; |
| |
| list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list); |
| return iocbq; |
| } |
| |
| /** |
| * __lpfc_clear_active_sglq - Remove the active sglq for this XRI. |
| * @phba: Pointer to HBA context object. |
| * @xritag: XRI value. |
| * |
| * This function clears the sglq pointer from the array of acive |
| * sglq's. The xritag that is passed in is used to index into the |
| * array. Before the xritag can be used it needs to be adjusted |
| * by subtracting the xribase. |
| * |
| * Returns sglq ponter = success, NULL = Failure. |
| **/ |
| static struct lpfc_sglq * |
| __lpfc_clear_active_sglq(struct lpfc_hba *phba, uint16_t xritag) |
| { |
| uint16_t adj_xri; |
| struct lpfc_sglq *sglq; |
| adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base; |
| if (adj_xri > phba->sli4_hba.max_cfg_param.max_xri) |
| return NULL; |
| sglq = phba->sli4_hba.lpfc_sglq_active_list[adj_xri]; |
| phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = NULL; |
| return sglq; |
| } |
| |
| /** |
| * __lpfc_get_active_sglq - Get the active sglq for this XRI. |
| * @phba: Pointer to HBA context object. |
| * @xritag: XRI value. |
| * |
| * This function returns the sglq pointer from the array of acive |
| * sglq's. The xritag that is passed in is used to index into the |
| * array. Before the xritag can be used it needs to be adjusted |
| * by subtracting the xribase. |
| * |
| * Returns sglq ponter = success, NULL = Failure. |
| **/ |
| static struct lpfc_sglq * |
| __lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag) |
| { |
| uint16_t adj_xri; |
| struct lpfc_sglq *sglq; |
| adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base; |
| if (adj_xri > phba->sli4_hba.max_cfg_param.max_xri) |
| return NULL; |
| sglq = phba->sli4_hba.lpfc_sglq_active_list[adj_xri]; |
| return sglq; |
| } |
| |
| /** |
| * __lpfc_sli_get_sglq - Allocates an iocb object from sgl pool |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called with hbalock held. This function |
| * Gets a new driver sglq object from the sglq list. If the |
| * list is not empty then it is successful, it returns pointer to the newly |
| * allocated sglq object else it returns NULL. |
| **/ |
| static struct lpfc_sglq * |
| __lpfc_sli_get_sglq(struct lpfc_hba *phba) |
| { |
| struct list_head *lpfc_sgl_list = &phba->sli4_hba.lpfc_sgl_list; |
| struct lpfc_sglq *sglq = NULL; |
| uint16_t adj_xri; |
| list_remove_head(lpfc_sgl_list, sglq, struct lpfc_sglq, list); |
| if (!sglq) |
| return NULL; |
| adj_xri = sglq->sli4_xritag - phba->sli4_hba.max_cfg_param.xri_base; |
| phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = sglq; |
| return sglq; |
| } |
| |
| /** |
| * lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called with no lock held. This function |
| * allocates a new driver iocb object from the iocb pool. If the |
| * allocation is successful, it returns pointer to the newly |
| * allocated iocb object else it returns NULL. |
| **/ |
| struct lpfc_iocbq * |
| lpfc_sli_get_iocbq(struct lpfc_hba *phba) |
| { |
| struct lpfc_iocbq * iocbq = NULL; |
| unsigned long iflags; |
| |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| iocbq = __lpfc_sli_get_iocbq(phba); |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| return iocbq; |
| } |
| |
| /** |
| * __lpfc_sli_release_iocbq_s4 - Release iocb to the iocb pool |
| * @phba: Pointer to HBA context object. |
| * @iocbq: Pointer to driver iocb object. |
| * |
| * This function is called with hbalock held to release driver |
| * iocb object to the iocb pool. The iotag in the iocb object |
| * does not change for each use of the iocb object. This function |
| * clears all other fields of the iocb object when it is freed. |
| * The sqlq structure that holds the xritag and phys and virtual |
| * mappings for the scatter gather list is retrieved from the |
| * active array of sglq. The get of the sglq pointer also clears |
| * the entry in the array. If the status of the IO indiactes that |
| * this IO was aborted then the sglq entry it put on the |
| * lpfc_abts_els_sgl_list until the CQ_ABORTED_XRI is received. If the |
| * IO has good status or fails for any other reason then the sglq |
| * entry is added to the free list (lpfc_sgl_list). |
| **/ |
| static void |
| __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) |
| { |
| struct lpfc_sglq *sglq; |
| size_t start_clean = offsetof(struct lpfc_iocbq, iocb); |
| unsigned long iflag; |
| |
| if (iocbq->sli4_xritag == NO_XRI) |
| sglq = NULL; |
| else |
| sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_xritag); |
| if (sglq) { |
| if (iocbq->iocb_flag & LPFC_EXCHANGE_BUSY) { |
| spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock, |
| iflag); |
| list_add(&sglq->list, |
| &phba->sli4_hba.lpfc_abts_els_sgl_list); |
| spin_unlock_irqrestore( |
| &phba->sli4_hba.abts_sgl_list_lock, iflag); |
| } else |
| list_add(&sglq->list, &phba->sli4_hba.lpfc_sgl_list); |
| } |
| |
| |
| /* |
| * Clean all volatile data fields, preserve iotag and node struct. |
| */ |
| memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean); |
| iocbq->sli4_xritag = NO_XRI; |
| list_add_tail(&iocbq->list, &phba->lpfc_iocb_list); |
| } |
| |
| /** |
| * __lpfc_sli_release_iocbq_s3 - Release iocb to the iocb pool |
| * @phba: Pointer to HBA context object. |
| * @iocbq: Pointer to driver iocb object. |
| * |
| * This function is called with hbalock held to release driver |
| * iocb object to the iocb pool. The iotag in the iocb object |
| * does not change for each use of the iocb object. This function |
| * clears all other fields of the iocb object when it is freed. |
| **/ |
| static void |
| __lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) |
| { |
| size_t start_clean = offsetof(struct lpfc_iocbq, iocb); |
| |
| /* |
| * Clean all volatile data fields, preserve iotag and node struct. |
| */ |
| memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean); |
| iocbq->sli4_xritag = NO_XRI; |
| list_add_tail(&iocbq->list, &phba->lpfc_iocb_list); |
| } |
| |
| /** |
| * __lpfc_sli_release_iocbq - Release iocb to the iocb pool |
| * @phba: Pointer to HBA context object. |
| * @iocbq: Pointer to driver iocb object. |
| * |
| * This function is called with hbalock held to release driver |
| * iocb object to the iocb pool. The iotag in the iocb object |
| * does not change for each use of the iocb object. This function |
| * clears all other fields of the iocb object when it is freed. |
| **/ |
| static void |
| __lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) |
| { |
| phba->__lpfc_sli_release_iocbq(phba, iocbq); |
| } |
| |
| /** |
| * lpfc_sli_release_iocbq - Release iocb to the iocb pool |
| * @phba: Pointer to HBA context object. |
| * @iocbq: Pointer to driver iocb object. |
| * |
| * This function is called with no lock held to release the iocb to |
| * iocb pool. |
| **/ |
| void |
| lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) |
| { |
| unsigned long iflags; |
| |
| /* |
| * Clean all volatile data fields, preserve iotag and node struct. |
| */ |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| __lpfc_sli_release_iocbq(phba, iocbq); |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| } |
| |
| /** |
| * lpfc_sli_cancel_iocbs - Cancel all iocbs from a list. |
| * @phba: Pointer to HBA context object. |
| * @iocblist: List of IOCBs. |
| * @ulpstatus: ULP status in IOCB command field. |
| * @ulpWord4: ULP word-4 in IOCB command field. |
| * |
| * This function is called with a list of IOCBs to cancel. It cancels the IOCB |
| * on the list by invoking the complete callback function associated with the |
| * IOCB with the provided @ulpstatus and @ulpword4 set to the IOCB commond |
| * fields. |
| **/ |
| void |
| lpfc_sli_cancel_iocbs(struct lpfc_hba *phba, struct list_head *iocblist, |
| uint32_t ulpstatus, uint32_t ulpWord4) |
| { |
| struct lpfc_iocbq *piocb; |
| |
| while (!list_empty(iocblist)) { |
| list_remove_head(iocblist, piocb, struct lpfc_iocbq, list); |
| |
| if (!piocb->iocb_cmpl) |
| lpfc_sli_release_iocbq(phba, piocb); |
| else { |
| piocb->iocb.ulpStatus = ulpstatus; |
| piocb->iocb.un.ulpWord[4] = ulpWord4; |
| (piocb->iocb_cmpl) (phba, piocb, piocb); |
| } |
| } |
| return; |
| } |
| |
| /** |
| * lpfc_sli_iocb_cmd_type - Get the iocb type |
| * @iocb_cmnd: iocb command code. |
| * |
| * This function is called by ring event handler function to get the iocb type. |
| * This function translates the iocb command to an iocb command type used to |
| * decide the final disposition of each completed IOCB. |
| * The function returns |
| * LPFC_UNKNOWN_IOCB if it is an unsupported iocb |
| * LPFC_SOL_IOCB if it is a solicited iocb completion |
| * LPFC_ABORT_IOCB if it is an abort iocb |
| * LPFC_UNSOL_IOCB if it is an unsolicited iocb |
| * |
| * The caller is not required to hold any lock. |
| **/ |
| static lpfc_iocb_type |
| lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd) |
| { |
| lpfc_iocb_type type = LPFC_UNKNOWN_IOCB; |
| |
| if (iocb_cmnd > CMD_MAX_IOCB_CMD) |
| return 0; |
| |
| switch (iocb_cmnd) { |
| case CMD_XMIT_SEQUENCE_CR: |
| case CMD_XMIT_SEQUENCE_CX: |
| case CMD_XMIT_BCAST_CN: |
| case CMD_XMIT_BCAST_CX: |
| case CMD_ELS_REQUEST_CR: |
| case CMD_ELS_REQUEST_CX: |
| case CMD_CREATE_XRI_CR: |
| case CMD_CREATE_XRI_CX: |
| case CMD_GET_RPI_CN: |
| case CMD_XMIT_ELS_RSP_CX: |
| case CMD_GET_RPI_CR: |
| case CMD_FCP_IWRITE_CR: |
| case CMD_FCP_IWRITE_CX: |
| case CMD_FCP_IREAD_CR: |
| case CMD_FCP_IREAD_CX: |
| case CMD_FCP_ICMND_CR: |
| case CMD_FCP_ICMND_CX: |
| case CMD_FCP_TSEND_CX: |
| case CMD_FCP_TRSP_CX: |
| case CMD_FCP_TRECEIVE_CX: |
| case CMD_FCP_AUTO_TRSP_CX: |
| case CMD_ADAPTER_MSG: |
| case CMD_ADAPTER_DUMP: |
| case CMD_XMIT_SEQUENCE64_CR: |
| case CMD_XMIT_SEQUENCE64_CX: |
| case CMD_XMIT_BCAST64_CN: |
| case CMD_XMIT_BCAST64_CX: |
| case CMD_ELS_REQUEST64_CR: |
| case CMD_ELS_REQUEST64_CX: |
| case CMD_FCP_IWRITE64_CR: |
| case CMD_FCP_IWRITE64_CX: |
| case CMD_FCP_IREAD64_CR: |
| case CMD_FCP_IREAD64_CX: |
| case CMD_FCP_ICMND64_CR: |
| case CMD_FCP_ICMND64_CX: |
| case CMD_FCP_TSEND64_CX: |
| case CMD_FCP_TRSP64_CX: |
| case CMD_FCP_TRECEIVE64_CX: |
| case CMD_GEN_REQUEST64_CR: |
| case CMD_GEN_REQUEST64_CX: |
| case CMD_XMIT_ELS_RSP64_CX: |
| case DSSCMD_IWRITE64_CR: |
| case DSSCMD_IWRITE64_CX: |
| case DSSCMD_IREAD64_CR: |
| case DSSCMD_IREAD64_CX: |
| type = LPFC_SOL_IOCB; |
| break; |
| case CMD_ABORT_XRI_CN: |
| case CMD_ABORT_XRI_CX: |
| case CMD_CLOSE_XRI_CN: |
| case CMD_CLOSE_XRI_CX: |
| case CMD_XRI_ABORTED_CX: |
| case CMD_ABORT_MXRI64_CN: |
| case CMD_XMIT_BLS_RSP64_CX: |
| type = LPFC_ABORT_IOCB; |
| break; |
| case CMD_RCV_SEQUENCE_CX: |
| case CMD_RCV_ELS_REQ_CX: |
| case CMD_RCV_SEQUENCE64_CX: |
| case CMD_RCV_ELS_REQ64_CX: |
| case CMD_ASYNC_STATUS: |
| case CMD_IOCB_RCV_SEQ64_CX: |
| case CMD_IOCB_RCV_ELS64_CX: |
| case CMD_IOCB_RCV_CONT64_CX: |
| case CMD_IOCB_RET_XRI64_CX: |
| type = LPFC_UNSOL_IOCB; |
| break; |
| case CMD_IOCB_XMIT_MSEQ64_CR: |
| case CMD_IOCB_XMIT_MSEQ64_CX: |
| case CMD_IOCB_RCV_SEQ_LIST64_CX: |
| case CMD_IOCB_RCV_ELS_LIST64_CX: |
| case CMD_IOCB_CLOSE_EXTENDED_CN: |
| case CMD_IOCB_ABORT_EXTENDED_CN: |
| case CMD_IOCB_RET_HBQE64_CN: |
| case CMD_IOCB_FCP_IBIDIR64_CR: |
| case CMD_IOCB_FCP_IBIDIR64_CX: |
| case CMD_IOCB_FCP_ITASKMGT64_CX: |
| case CMD_IOCB_LOGENTRY_CN: |
| case CMD_IOCB_LOGENTRY_ASYNC_CN: |
| printk("%s - Unhandled SLI-3 Command x%x\n", |
| __func__, iocb_cmnd); |
| type = LPFC_UNKNOWN_IOCB; |
| break; |
| default: |
| type = LPFC_UNKNOWN_IOCB; |
| break; |
| } |
| |
| return type; |
| } |
| |
| /** |
| * lpfc_sli_ring_map - Issue config_ring mbox for all rings |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called from SLI initialization code |
| * to configure every ring of the HBA's SLI interface. The |
| * caller is not required to hold any lock. This function issues |
| * a config_ring mailbox command for each ring. |
| * This function returns zero if successful else returns a negative |
| * error code. |
| **/ |
| static int |
| lpfc_sli_ring_map(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli = &phba->sli; |
| LPFC_MBOXQ_t *pmb; |
| MAILBOX_t *pmbox; |
| int i, rc, ret = 0; |
| |
| pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!pmb) |
| return -ENOMEM; |
| pmbox = &pmb->u.mb; |
| phba->link_state = LPFC_INIT_MBX_CMDS; |
| for (i = 0; i < psli->num_rings; i++) { |
| lpfc_config_ring(phba, i, pmb); |
| rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); |
| if (rc != MBX_SUCCESS) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0446 Adapter failed to init (%d), " |
| "mbxCmd x%x CFG_RING, mbxStatus x%x, " |
| "ring %d\n", |
| rc, pmbox->mbxCommand, |
| pmbox->mbxStatus, i); |
| phba->link_state = LPFC_HBA_ERROR; |
| ret = -ENXIO; |
| break; |
| } |
| } |
| mempool_free(pmb, phba->mbox_mem_pool); |
| return ret; |
| } |
| |
| /** |
| * lpfc_sli_ringtxcmpl_put - Adds new iocb to the txcmplq |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @piocb: Pointer to the driver iocb object. |
| * |
| * This function is called with hbalock held. The function adds the |
| * new iocb to txcmplq of the given ring. This function always returns |
| * 0. If this function is called for ELS ring, this function checks if |
| * there is a vport associated with the ELS command. This function also |
| * starts els_tmofunc timer if this is an ELS command. |
| **/ |
| static int |
| lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq *piocb) |
| { |
| list_add_tail(&piocb->list, &pring->txcmplq); |
| pring->txcmplq_cnt++; |
| if ((unlikely(pring->ringno == LPFC_ELS_RING)) && |
| (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) && |
| (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) { |
| if (!piocb->vport) |
| BUG(); |
| else |
| mod_timer(&piocb->vport->els_tmofunc, |
| jiffies + HZ * (phba->fc_ratov << 1)); |
| } |
| |
| |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_ringtx_get - Get first element of the txq |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * |
| * This function is called with hbalock held to get next |
| * iocb in txq of the given ring. If there is any iocb in |
| * the txq, the function returns first iocb in the list after |
| * removing the iocb from the list, else it returns NULL. |
| **/ |
| static struct lpfc_iocbq * |
| lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) |
| { |
| struct lpfc_iocbq *cmd_iocb; |
| |
| list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list); |
| if (cmd_iocb != NULL) |
| pring->txq_cnt--; |
| return cmd_iocb; |
| } |
| |
| /** |
| * lpfc_sli_next_iocb_slot - Get next iocb slot in the ring |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * |
| * This function is called with hbalock held and the caller must post the |
| * iocb without releasing the lock. If the caller releases the lock, |
| * iocb slot returned by the function is not guaranteed to be available. |
| * The function returns pointer to the next available iocb slot if there |
| * is available slot in the ring, else it returns NULL. |
| * If the get index of the ring is ahead of the put index, the function |
| * will post an error attention event to the worker thread to take the |
| * HBA to offline state. |
| **/ |
| static IOCB_t * |
| lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring) |
| { |
| struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno]; |
| uint32_t max_cmd_idx = pring->numCiocb; |
| if ((pring->next_cmdidx == pring->cmdidx) && |
| (++pring->next_cmdidx >= max_cmd_idx)) |
| pring->next_cmdidx = 0; |
| |
| if (unlikely(pring->local_getidx == pring->next_cmdidx)) { |
| |
| pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); |
| |
| if (unlikely(pring->local_getidx >= max_cmd_idx)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0315 Ring %d issue: portCmdGet %d " |
| "is bigger than cmd ring %d\n", |
| pring->ringno, |
| pring->local_getidx, max_cmd_idx); |
| |
| phba->link_state = LPFC_HBA_ERROR; |
| /* |
| * All error attention handlers are posted to |
| * worker thread |
| */ |
| phba->work_ha |= HA_ERATT; |
| phba->work_hs = HS_FFER3; |
| |
| lpfc_worker_wake_up(phba); |
| |
| return NULL; |
| } |
| |
| if (pring->local_getidx == pring->next_cmdidx) |
| return NULL; |
| } |
| |
| return lpfc_cmd_iocb(phba, pring); |
| } |
| |
| /** |
| * lpfc_sli_next_iotag - Get an iotag for the iocb |
| * @phba: Pointer to HBA context object. |
| * @iocbq: Pointer to driver iocb object. |
| * |
| * This function gets an iotag for the iocb. If there is no unused iotag and |
| * the iocbq_lookup_len < 0xffff, this function allocates a bigger iotag_lookup |
| * array and assigns a new iotag. |
| * The function returns the allocated iotag if successful, else returns zero. |
| * Zero is not a valid iotag. |
| * The caller is not required to hold any lock. |
| **/ |
| uint16_t |
| lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) |
| { |
| struct lpfc_iocbq **new_arr; |
| struct lpfc_iocbq **old_arr; |
| size_t new_len; |
| struct lpfc_sli *psli = &phba->sli; |
| uint16_t iotag; |
| |
| spin_lock_irq(&phba->hbalock); |
| iotag = psli->last_iotag; |
| if(++iotag < psli->iocbq_lookup_len) { |
| psli->last_iotag = iotag; |
| psli->iocbq_lookup[iotag] = iocbq; |
| spin_unlock_irq(&phba->hbalock); |
| iocbq->iotag = iotag; |
| return iotag; |
| } else if (psli->iocbq_lookup_len < (0xffff |
| - LPFC_IOCBQ_LOOKUP_INCREMENT)) { |
| new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT; |
| spin_unlock_irq(&phba->hbalock); |
| new_arr = kzalloc(new_len * sizeof (struct lpfc_iocbq *), |
| GFP_KERNEL); |
| if (new_arr) { |
| spin_lock_irq(&phba->hbalock); |
| old_arr = psli->iocbq_lookup; |
| if (new_len <= psli->iocbq_lookup_len) { |
| /* highly unprobable case */ |
| kfree(new_arr); |
| iotag = psli->last_iotag; |
| if(++iotag < psli->iocbq_lookup_len) { |
| psli->last_iotag = iotag; |
| psli->iocbq_lookup[iotag] = iocbq; |
| spin_unlock_irq(&phba->hbalock); |
| iocbq->iotag = iotag; |
| return iotag; |
| } |
| spin_unlock_irq(&phba->hbalock); |
| return 0; |
| } |
| if (psli->iocbq_lookup) |
| memcpy(new_arr, old_arr, |
| ((psli->last_iotag + 1) * |
| sizeof (struct lpfc_iocbq *))); |
| psli->iocbq_lookup = new_arr; |
| psli->iocbq_lookup_len = new_len; |
| psli->last_iotag = iotag; |
| psli->iocbq_lookup[iotag] = iocbq; |
| spin_unlock_irq(&phba->hbalock); |
| iocbq->iotag = iotag; |
| kfree(old_arr); |
| return iotag; |
| } |
| } else |
| spin_unlock_irq(&phba->hbalock); |
| |
| lpfc_printf_log(phba, KERN_ERR,LOG_SLI, |
| "0318 Failed to allocate IOTAG.last IOTAG is %d\n", |
| psli->last_iotag); |
| |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_submit_iocb - Submit an iocb to the firmware |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @iocb: Pointer to iocb slot in the ring. |
| * @nextiocb: Pointer to driver iocb object which need to be |
| * posted to firmware. |
| * |
| * This function is called with hbalock held to post a new iocb to |
| * the firmware. This function copies the new iocb to ring iocb slot and |
| * updates the ring pointers. It adds the new iocb to txcmplq if there is |
| * a completion call back for this iocb else the function will free the |
| * iocb object. |
| **/ |
| static void |
| lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| IOCB_t *iocb, struct lpfc_iocbq *nextiocb) |
| { |
| /* |
| * Set up an iotag |
| */ |
| nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0; |
| |
| |
| if (pring->ringno == LPFC_ELS_RING) { |
| lpfc_debugfs_slow_ring_trc(phba, |
| "IOCB cmd ring: wd4:x%08x wd6:x%08x wd7:x%08x", |
| *(((uint32_t *) &nextiocb->iocb) + 4), |
| *(((uint32_t *) &nextiocb->iocb) + 6), |
| *(((uint32_t *) &nextiocb->iocb) + 7)); |
| } |
| |
| /* |
| * Issue iocb command to adapter |
| */ |
| lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, phba->iocb_cmd_size); |
| wmb(); |
| pring->stats.iocb_cmd++; |
| |
| /* |
| * If there is no completion routine to call, we can release the |
| * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF, |
| * that have no rsp ring completion, iocb_cmpl MUST be NULL. |
| */ |
| if (nextiocb->iocb_cmpl) |
| lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb); |
| else |
| __lpfc_sli_release_iocbq(phba, nextiocb); |
| |
| /* |
| * Let the HBA know what IOCB slot will be the next one the |
| * driver will put a command into. |
| */ |
| pring->cmdidx = pring->next_cmdidx; |
| writel(pring->cmdidx, &phba->host_gp[pring->ringno].cmdPutInx); |
| } |
| |
| /** |
| * lpfc_sli_update_full_ring - Update the chip attention register |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * |
| * The caller is not required to hold any lock for calling this function. |
| * This function updates the chip attention bits for the ring to inform firmware |
| * that there are pending work to be done for this ring and requests an |
| * interrupt when there is space available in the ring. This function is |
| * called when the driver is unable to post more iocbs to the ring due |
| * to unavailability of space in the ring. |
| **/ |
| static void |
| lpfc_sli_update_full_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) |
| { |
| int ringno = pring->ringno; |
| |
| pring->flag |= LPFC_CALL_RING_AVAILABLE; |
| |
| wmb(); |
| |
| /* |
| * Set ring 'ringno' to SET R0CE_REQ in Chip Att register. |
| * The HBA will tell us when an IOCB entry is available. |
| */ |
| writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr); |
| readl(phba->CAregaddr); /* flush */ |
| |
| pring->stats.iocb_cmd_full++; |
| } |
| |
| /** |
| * lpfc_sli_update_ring - Update chip attention register |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * |
| * This function updates the chip attention register bit for the |
| * given ring to inform HBA that there is more work to be done |
| * in this ring. The caller is not required to hold any lock. |
| **/ |
| static void |
| lpfc_sli_update_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) |
| { |
| int ringno = pring->ringno; |
| |
| /* |
| * Tell the HBA that there is work to do in this ring. |
| */ |
| if (!(phba->sli3_options & LPFC_SLI3_CRP_ENABLED)) { |
| wmb(); |
| writel(CA_R0ATT << (ringno * 4), phba->CAregaddr); |
| readl(phba->CAregaddr); /* flush */ |
| } |
| } |
| |
| /** |
| * lpfc_sli_resume_iocb - Process iocbs in the txq |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * |
| * This function is called with hbalock held to post pending iocbs |
| * in the txq to the firmware. This function is called when driver |
| * detects space available in the ring. |
| **/ |
| static void |
| lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) |
| { |
| IOCB_t *iocb; |
| struct lpfc_iocbq *nextiocb; |
| |
| /* |
| * Check to see if: |
| * (a) there is anything on the txq to send |
| * (b) link is up |
| * (c) link attention events can be processed (fcp ring only) |
| * (d) IOCB processing is not blocked by the outstanding mbox command. |
| */ |
| if (pring->txq_cnt && |
| lpfc_is_link_up(phba) && |
| (pring->ringno != phba->sli.fcp_ring || |
| phba->sli.sli_flag & LPFC_PROCESS_LA)) { |
| |
| while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) && |
| (nextiocb = lpfc_sli_ringtx_get(phba, pring))) |
| lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb); |
| |
| if (iocb) |
| lpfc_sli_update_ring(phba, pring); |
| else |
| lpfc_sli_update_full_ring(phba, pring); |
| } |
| |
| return; |
| } |
| |
| /** |
| * lpfc_sli_next_hbq_slot - Get next hbq entry for the HBQ |
| * @phba: Pointer to HBA context object. |
| * @hbqno: HBQ number. |
| * |
| * This function is called with hbalock held to get the next |
| * available slot for the given HBQ. If there is free slot |
| * available for the HBQ it will return pointer to the next available |
| * HBQ entry else it will return NULL. |
| **/ |
| static struct lpfc_hbq_entry * |
| lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno) |
| { |
| struct hbq_s *hbqp = &phba->hbqs[hbqno]; |
| |
| if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx && |
| ++hbqp->next_hbqPutIdx >= hbqp->entry_count) |
| hbqp->next_hbqPutIdx = 0; |
| |
| if (unlikely(hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)) { |
| uint32_t raw_index = phba->hbq_get[hbqno]; |
| uint32_t getidx = le32_to_cpu(raw_index); |
| |
| hbqp->local_hbqGetIdx = getidx; |
| |
| if (unlikely(hbqp->local_hbqGetIdx >= hbqp->entry_count)) { |
| lpfc_printf_log(phba, KERN_ERR, |
| LOG_SLI | LOG_VPORT, |
| "1802 HBQ %d: local_hbqGetIdx " |
| "%u is > than hbqp->entry_count %u\n", |
| hbqno, hbqp->local_hbqGetIdx, |
| hbqp->entry_count); |
| |
| phba->link_state = LPFC_HBA_ERROR; |
| return NULL; |
| } |
| |
| if (hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx) |
| return NULL; |
| } |
| |
| return (struct lpfc_hbq_entry *) phba->hbqs[hbqno].hbq_virt + |
| hbqp->hbqPutIdx; |
| } |
| |
| /** |
| * lpfc_sli_hbqbuf_free_all - Free all the hbq buffers |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called with no lock held to free all the |
| * hbq buffers while uninitializing the SLI interface. It also |
| * frees the HBQ buffers returned by the firmware but not yet |
| * processed by the upper layers. |
| **/ |
| void |
| lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba) |
| { |
| struct lpfc_dmabuf *dmabuf, *next_dmabuf; |
| struct hbq_dmabuf *hbq_buf; |
| unsigned long flags; |
| int i, hbq_count; |
| uint32_t hbqno; |
| |
| hbq_count = lpfc_sli_hbq_count(); |
| /* Return all memory used by all HBQs */ |
| spin_lock_irqsave(&phba->hbalock, flags); |
| for (i = 0; i < hbq_count; ++i) { |
| list_for_each_entry_safe(dmabuf, next_dmabuf, |
| &phba->hbqs[i].hbq_buffer_list, list) { |
| hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf); |
| list_del(&hbq_buf->dbuf.list); |
| (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf); |
| } |
| phba->hbqs[i].buffer_count = 0; |
| } |
| /* Return all HBQ buffer that are in-fly */ |
| list_for_each_entry_safe(dmabuf, next_dmabuf, &phba->rb_pend_list, |
| list) { |
| hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf); |
| list_del(&hbq_buf->dbuf.list); |
| if (hbq_buf->tag == -1) { |
| (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer) |
| (phba, hbq_buf); |
| } else { |
| hbqno = hbq_buf->tag >> 16; |
| if (hbqno >= LPFC_MAX_HBQS) |
| (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer) |
| (phba, hbq_buf); |
| else |
| (phba->hbqs[hbqno].hbq_free_buffer)(phba, |
| hbq_buf); |
| } |
| } |
| |
| /* Mark the HBQs not in use */ |
| phba->hbq_in_use = 0; |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| } |
| |
| /** |
| * lpfc_sli_hbq_to_firmware - Post the hbq buffer to firmware |
| * @phba: Pointer to HBA context object. |
| * @hbqno: HBQ number. |
| * @hbq_buf: Pointer to HBQ buffer. |
| * |
| * This function is called with the hbalock held to post a |
| * hbq buffer to the firmware. If the function finds an empty |
| * slot in the HBQ, it will post the buffer. The function will return |
| * pointer to the hbq entry if it successfully post the buffer |
| * else it will return NULL. |
| **/ |
| static int |
| lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno, |
| struct hbq_dmabuf *hbq_buf) |
| { |
| return phba->lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buf); |
| } |
| |
| /** |
| * lpfc_sli_hbq_to_firmware_s3 - Post the hbq buffer to SLI3 firmware |
| * @phba: Pointer to HBA context object. |
| * @hbqno: HBQ number. |
| * @hbq_buf: Pointer to HBQ buffer. |
| * |
| * This function is called with the hbalock held to post a hbq buffer to the |
| * firmware. If the function finds an empty slot in the HBQ, it will post the |
| * buffer and place it on the hbq_buffer_list. The function will return zero if |
| * it successfully post the buffer else it will return an error. |
| **/ |
| static int |
| lpfc_sli_hbq_to_firmware_s3(struct lpfc_hba *phba, uint32_t hbqno, |
| struct hbq_dmabuf *hbq_buf) |
| { |
| struct lpfc_hbq_entry *hbqe; |
| dma_addr_t physaddr = hbq_buf->dbuf.phys; |
| |
| /* Get next HBQ entry slot to use */ |
| hbqe = lpfc_sli_next_hbq_slot(phba, hbqno); |
| if (hbqe) { |
| struct hbq_s *hbqp = &phba->hbqs[hbqno]; |
| |
| hbqe->bde.addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); |
| hbqe->bde.addrLow = le32_to_cpu(putPaddrLow(physaddr)); |
| hbqe->bde.tus.f.bdeSize = hbq_buf->size; |
| hbqe->bde.tus.f.bdeFlags = 0; |
| hbqe->bde.tus.w = le32_to_cpu(hbqe->bde.tus.w); |
| hbqe->buffer_tag = le32_to_cpu(hbq_buf->tag); |
| /* Sync SLIM */ |
| hbqp->hbqPutIdx = hbqp->next_hbqPutIdx; |
| writel(hbqp->hbqPutIdx, phba->hbq_put + hbqno); |
| /* flush */ |
| readl(phba->hbq_put + hbqno); |
| list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list); |
| return 0; |
| } else |
| return -ENOMEM; |
| } |
| |
| /** |
| * lpfc_sli_hbq_to_firmware_s4 - Post the hbq buffer to SLI4 firmware |
| * @phba: Pointer to HBA context object. |
| * @hbqno: HBQ number. |
| * @hbq_buf: Pointer to HBQ buffer. |
| * |
| * This function is called with the hbalock held to post an RQE to the SLI4 |
| * firmware. If able to post the RQE to the RQ it will queue the hbq entry to |
| * the hbq_buffer_list and return zero, otherwise it will return an error. |
| **/ |
| static int |
| lpfc_sli_hbq_to_firmware_s4(struct lpfc_hba *phba, uint32_t hbqno, |
| struct hbq_dmabuf *hbq_buf) |
| { |
| int rc; |
| struct lpfc_rqe hrqe; |
| struct lpfc_rqe drqe; |
| |
| hrqe.address_lo = putPaddrLow(hbq_buf->hbuf.phys); |
| hrqe.address_hi = putPaddrHigh(hbq_buf->hbuf.phys); |
| drqe.address_lo = putPaddrLow(hbq_buf->dbuf.phys); |
| drqe.address_hi = putPaddrHigh(hbq_buf->dbuf.phys); |
| rc = lpfc_sli4_rq_put(phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq, |
| &hrqe, &drqe); |
| if (rc < 0) |
| return rc; |
| hbq_buf->tag = rc; |
| list_add_tail(&hbq_buf->dbuf.list, &phba->hbqs[hbqno].hbq_buffer_list); |
| return 0; |
| } |
| |
| /* HBQ for ELS and CT traffic. */ |
| static struct lpfc_hbq_init lpfc_els_hbq = { |
| .rn = 1, |
| .entry_count = 256, |
| .mask_count = 0, |
| .profile = 0, |
| .ring_mask = (1 << LPFC_ELS_RING), |
| .buffer_count = 0, |
| .init_count = 40, |
| .add_count = 40, |
| }; |
| |
| /* HBQ for the extra ring if needed */ |
| static struct lpfc_hbq_init lpfc_extra_hbq = { |
| .rn = 1, |
| .entry_count = 200, |
| .mask_count = 0, |
| .profile = 0, |
| .ring_mask = (1 << LPFC_EXTRA_RING), |
| .buffer_count = 0, |
| .init_count = 0, |
| .add_count = 5, |
| }; |
| |
| /* Array of HBQs */ |
| struct lpfc_hbq_init *lpfc_hbq_defs[] = { |
| &lpfc_els_hbq, |
| &lpfc_extra_hbq, |
| }; |
| |
| /** |
| * lpfc_sli_hbqbuf_fill_hbqs - Post more hbq buffers to HBQ |
| * @phba: Pointer to HBA context object. |
| * @hbqno: HBQ number. |
| * @count: Number of HBQ buffers to be posted. |
| * |
| * This function is called with no lock held to post more hbq buffers to the |
| * given HBQ. The function returns the number of HBQ buffers successfully |
| * posted. |
| **/ |
| static int |
| lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count) |
| { |
| uint32_t i, posted = 0; |
| unsigned long flags; |
| struct hbq_dmabuf *hbq_buffer; |
| LIST_HEAD(hbq_buf_list); |
| if (!phba->hbqs[hbqno].hbq_alloc_buffer) |
| return 0; |
| |
| if ((phba->hbqs[hbqno].buffer_count + count) > |
| lpfc_hbq_defs[hbqno]->entry_count) |
| count = lpfc_hbq_defs[hbqno]->entry_count - |
| phba->hbqs[hbqno].buffer_count; |
| if (!count) |
| return 0; |
| /* Allocate HBQ entries */ |
| for (i = 0; i < count; i++) { |
| hbq_buffer = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba); |
| if (!hbq_buffer) |
| break; |
| list_add_tail(&hbq_buffer->dbuf.list, &hbq_buf_list); |
| } |
| /* Check whether HBQ is still in use */ |
| spin_lock_irqsave(&phba->hbalock, flags); |
| if (!phba->hbq_in_use) |
| goto err; |
| while (!list_empty(&hbq_buf_list)) { |
| list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf, |
| dbuf.list); |
| hbq_buffer->tag = (phba->hbqs[hbqno].buffer_count | |
| (hbqno << 16)); |
| if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) { |
| phba->hbqs[hbqno].buffer_count++; |
| posted++; |
| } else |
| (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer); |
| } |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| return posted; |
| err: |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| while (!list_empty(&hbq_buf_list)) { |
| list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf, |
| dbuf.list); |
| (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer); |
| } |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_hbqbuf_add_hbqs - Post more HBQ buffers to firmware |
| * @phba: Pointer to HBA context object. |
| * @qno: HBQ number. |
| * |
| * This function posts more buffers to the HBQ. This function |
| * is called with no lock held. The function returns the number of HBQ entries |
| * successfully allocated. |
| **/ |
| int |
| lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno) |
| { |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| return 0; |
| else |
| return lpfc_sli_hbqbuf_fill_hbqs(phba, qno, |
| lpfc_hbq_defs[qno]->add_count); |
| } |
| |
| /** |
| * lpfc_sli_hbqbuf_init_hbqs - Post initial buffers to the HBQ |
| * @phba: Pointer to HBA context object. |
| * @qno: HBQ queue number. |
| * |
| * This function is called from SLI initialization code path with |
| * no lock held to post initial HBQ buffers to firmware. The |
| * function returns the number of HBQ entries successfully allocated. |
| **/ |
| static int |
| lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno) |
| { |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| return lpfc_sli_hbqbuf_fill_hbqs(phba, qno, |
| lpfc_hbq_defs[qno]->entry_count); |
| else |
| return lpfc_sli_hbqbuf_fill_hbqs(phba, qno, |
| lpfc_hbq_defs[qno]->init_count); |
| } |
| |
| /** |
| * lpfc_sli_hbqbuf_get - Remove the first hbq off of an hbq list |
| * @phba: Pointer to HBA context object. |
| * @hbqno: HBQ number. |
| * |
| * This function removes the first hbq buffer on an hbq list and returns a |
| * pointer to that buffer. If it finds no buffers on the list it returns NULL. |
| **/ |
| static struct hbq_dmabuf * |
| lpfc_sli_hbqbuf_get(struct list_head *rb_list) |
| { |
| struct lpfc_dmabuf *d_buf; |
| |
| list_remove_head(rb_list, d_buf, struct lpfc_dmabuf, list); |
| if (!d_buf) |
| return NULL; |
| return container_of(d_buf, struct hbq_dmabuf, dbuf); |
| } |
| |
| /** |
| * lpfc_sli_hbqbuf_find - Find the hbq buffer associated with a tag |
| * @phba: Pointer to HBA context object. |
| * @tag: Tag of the hbq buffer. |
| * |
| * This function is called with hbalock held. This function searches |
| * for the hbq buffer associated with the given tag in the hbq buffer |
| * list. If it finds the hbq buffer, it returns the hbq_buffer other wise |
| * it returns NULL. |
| **/ |
| static struct hbq_dmabuf * |
| lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag) |
| { |
| struct lpfc_dmabuf *d_buf; |
| struct hbq_dmabuf *hbq_buf; |
| uint32_t hbqno; |
| |
| hbqno = tag >> 16; |
| if (hbqno >= LPFC_MAX_HBQS) |
| return NULL; |
| |
| spin_lock_irq(&phba->hbalock); |
| list_for_each_entry(d_buf, &phba->hbqs[hbqno].hbq_buffer_list, list) { |
| hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf); |
| if (hbq_buf->tag == tag) { |
| spin_unlock_irq(&phba->hbalock); |
| return hbq_buf; |
| } |
| } |
| spin_unlock_irq(&phba->hbalock); |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT, |
| "1803 Bad hbq tag. Data: x%x x%x\n", |
| tag, phba->hbqs[tag >> 16].buffer_count); |
| return NULL; |
| } |
| |
| /** |
| * lpfc_sli_free_hbq - Give back the hbq buffer to firmware |
| * @phba: Pointer to HBA context object. |
| * @hbq_buffer: Pointer to HBQ buffer. |
| * |
| * This function is called with hbalock. This function gives back |
| * the hbq buffer to firmware. If the HBQ does not have space to |
| * post the buffer, it will free the buffer. |
| **/ |
| void |
| lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer) |
| { |
| uint32_t hbqno; |
| |
| if (hbq_buffer) { |
| hbqno = hbq_buffer->tag >> 16; |
| if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) |
| (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer); |
| } |
| } |
| |
| /** |
| * lpfc_sli_chk_mbx_command - Check if the mailbox is a legitimate mailbox |
| * @mbxCommand: mailbox command code. |
| * |
| * This function is called by the mailbox event handler function to verify |
| * that the completed mailbox command is a legitimate mailbox command. If the |
| * completed mailbox is not known to the function, it will return MBX_SHUTDOWN |
| * and the mailbox event handler will take the HBA offline. |
| **/ |
| static int |
| lpfc_sli_chk_mbx_command(uint8_t mbxCommand) |
| { |
| uint8_t ret; |
| |
| switch (mbxCommand) { |
| case MBX_LOAD_SM: |
| case MBX_READ_NV: |
| case MBX_WRITE_NV: |
| case MBX_WRITE_VPARMS: |
| case MBX_RUN_BIU_DIAG: |
| case MBX_INIT_LINK: |
| case MBX_DOWN_LINK: |
| case MBX_CONFIG_LINK: |
| case MBX_CONFIG_RING: |
| case MBX_RESET_RING: |
| case MBX_READ_CONFIG: |
| case MBX_READ_RCONFIG: |
| case MBX_READ_SPARM: |
| case MBX_READ_STATUS: |
| case MBX_READ_RPI: |
| case MBX_READ_XRI: |
| case MBX_READ_REV: |
| case MBX_READ_LNK_STAT: |
| case MBX_REG_LOGIN: |
| case MBX_UNREG_LOGIN: |
| case MBX_READ_LA: |
| case MBX_CLEAR_LA: |
| case MBX_DUMP_MEMORY: |
| case MBX_DUMP_CONTEXT: |
| case MBX_RUN_DIAGS: |
| case MBX_RESTART: |
| case MBX_UPDATE_CFG: |
| case MBX_DOWN_LOAD: |
| case MBX_DEL_LD_ENTRY: |
| case MBX_RUN_PROGRAM: |
| case MBX_SET_MASK: |
| case MBX_SET_VARIABLE: |
| case MBX_UNREG_D_ID: |
| case MBX_KILL_BOARD: |
| case MBX_CONFIG_FARP: |
| case MBX_BEACON: |
| case MBX_LOAD_AREA: |
| case MBX_RUN_BIU_DIAG64: |
| case MBX_CONFIG_PORT: |
| case MBX_READ_SPARM64: |
| case MBX_READ_RPI64: |
| case MBX_REG_LOGIN64: |
| case MBX_READ_LA64: |
| case MBX_WRITE_WWN: |
| case MBX_SET_DEBUG: |
| case MBX_LOAD_EXP_ROM: |
| case MBX_ASYNCEVT_ENABLE: |
| case MBX_REG_VPI: |
| case MBX_UNREG_VPI: |
| case MBX_HEARTBEAT: |
| case MBX_PORT_CAPABILITIES: |
| case MBX_PORT_IOV_CONTROL: |
| case MBX_SLI4_CONFIG: |
| case MBX_SLI4_REQ_FTRS: |
| case MBX_REG_FCFI: |
| case MBX_UNREG_FCFI: |
| case MBX_REG_VFI: |
| case MBX_UNREG_VFI: |
| case MBX_INIT_VPI: |
| case MBX_INIT_VFI: |
| case MBX_RESUME_RPI: |
| ret = mbxCommand; |
| break; |
| default: |
| ret = MBX_SHUTDOWN; |
| break; |
| } |
| return ret; |
| } |
| |
| /** |
| * lpfc_sli_wake_mbox_wait - lpfc_sli_issue_mbox_wait mbox completion handler |
| * @phba: Pointer to HBA context object. |
| * @pmboxq: Pointer to mailbox command. |
| * |
| * This is completion handler function for mailbox commands issued from |
| * lpfc_sli_issue_mbox_wait function. This function is called by the |
| * mailbox event handler function with no lock held. This function |
| * will wake up thread waiting on the wait queue pointed by context1 |
| * of the mailbox. |
| **/ |
| void |
| lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq) |
| { |
| wait_queue_head_t *pdone_q; |
| unsigned long drvr_flag; |
| |
| /* |
| * If pdone_q is empty, the driver thread gave up waiting and |
| * continued running. |
| */ |
| pmboxq->mbox_flag |= LPFC_MBX_WAKE; |
| spin_lock_irqsave(&phba->hbalock, drvr_flag); |
| pdone_q = (wait_queue_head_t *) pmboxq->context1; |
| if (pdone_q) |
| wake_up_interruptible(pdone_q); |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| return; |
| } |
| |
| |
| /** |
| * lpfc_sli_def_mbox_cmpl - Default mailbox completion handler |
| * @phba: Pointer to HBA context object. |
| * @pmb: Pointer to mailbox object. |
| * |
| * This function is the default mailbox completion handler. It |
| * frees the memory resources associated with the completed mailbox |
| * command. If the completed command is a REG_LOGIN mailbox command, |
| * this function will issue a UREG_LOGIN to re-claim the RPI. |
| **/ |
| void |
| lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| struct lpfc_dmabuf *mp; |
| uint16_t rpi, vpi; |
| int rc; |
| struct lpfc_vport *vport = pmb->vport; |
| |
| mp = (struct lpfc_dmabuf *) (pmb->context1); |
| |
| if (mp) { |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| } |
| |
| if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) && |
| (phba->sli_rev == LPFC_SLI_REV4)) |
| lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi); |
| |
| /* |
| * If a REG_LOGIN succeeded after node is destroyed or node |
| * is in re-discovery driver need to cleanup the RPI. |
| */ |
| if (!(phba->pport->load_flag & FC_UNLOADING) && |
| pmb->u.mb.mbxCommand == MBX_REG_LOGIN64 && |
| !pmb->u.mb.mbxStatus) { |
| rpi = pmb->u.mb.un.varWords[0]; |
| vpi = pmb->u.mb.un.varRegLogin.vpi - phba->vpi_base; |
| lpfc_unreg_login(phba, vpi, rpi, pmb); |
| pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); |
| if (rc != MBX_NOT_FINISHED) |
| return; |
| } |
| |
| /* Unreg VPI, if the REG_VPI succeed after VLink failure */ |
| if ((pmb->u.mb.mbxCommand == MBX_REG_VPI) && |
| !(phba->pport->load_flag & FC_UNLOADING) && |
| !pmb->u.mb.mbxStatus) { |
| lpfc_unreg_vpi(phba, pmb->u.mb.un.varRegVpi.vpi, pmb); |
| pmb->vport = vport; |
| pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); |
| if (rc != MBX_NOT_FINISHED) |
| return; |
| } |
| |
| if (bf_get(lpfc_mqe_command, &pmb->u.mqe) == MBX_SLI4_CONFIG) |
| lpfc_sli4_mbox_cmd_free(phba, pmb); |
| else |
| mempool_free(pmb, phba->mbox_mem_pool); |
| } |
| |
| /** |
| * lpfc_sli_handle_mb_event - Handle mailbox completions from firmware |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called with no lock held. This function processes all |
| * the completed mailbox commands and gives it to upper layers. The interrupt |
| * service routine processes mailbox completion interrupt and adds completed |
| * mailbox commands to the mboxq_cmpl queue and signals the worker thread. |
| * Worker thread call lpfc_sli_handle_mb_event, which will return the |
| * completed mailbox commands in mboxq_cmpl queue to the upper layers. This |
| * function returns the mailbox commands to the upper layer by calling the |
| * completion handler function of each mailbox. |
| **/ |
| int |
| lpfc_sli_handle_mb_event(struct lpfc_hba *phba) |
| { |
| MAILBOX_t *pmbox; |
| LPFC_MBOXQ_t *pmb; |
| int rc; |
| LIST_HEAD(cmplq); |
| |
| phba->sli.slistat.mbox_event++; |
| |
| /* Get all completed mailboxe buffers into the cmplq */ |
| spin_lock_irq(&phba->hbalock); |
| list_splice_init(&phba->sli.mboxq_cmpl, &cmplq); |
| spin_unlock_irq(&phba->hbalock); |
| |
| /* Get a Mailbox buffer to setup mailbox commands for callback */ |
| do { |
| list_remove_head(&cmplq, pmb, LPFC_MBOXQ_t, list); |
| if (pmb == NULL) |
| break; |
| |
| pmbox = &pmb->u.mb; |
| |
| if (pmbox->mbxCommand != MBX_HEARTBEAT) { |
| if (pmb->vport) { |
| lpfc_debugfs_disc_trc(pmb->vport, |
| LPFC_DISC_TRC_MBOX_VPORT, |
| "MBOX cmpl vport: cmd:x%x mb:x%x x%x", |
| (uint32_t)pmbox->mbxCommand, |
| pmbox->un.varWords[0], |
| pmbox->un.varWords[1]); |
| } |
| else { |
| lpfc_debugfs_disc_trc(phba->pport, |
| LPFC_DISC_TRC_MBOX, |
| "MBOX cmpl: cmd:x%x mb:x%x x%x", |
| (uint32_t)pmbox->mbxCommand, |
| pmbox->un.varWords[0], |
| pmbox->un.varWords[1]); |
| } |
| } |
| |
| /* |
| * It is a fatal error if unknown mbox command completion. |
| */ |
| if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) == |
| MBX_SHUTDOWN) { |
| /* Unknown mailbox command compl */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):0323 Unknown Mailbox command " |
| "x%x (x%x) Cmpl\n", |
| pmb->vport ? pmb->vport->vpi : 0, |
| pmbox->mbxCommand, |
| lpfc_sli4_mbox_opcode_get(phba, pmb)); |
| phba->link_state = LPFC_HBA_ERROR; |
| phba->work_hs = HS_FFER3; |
| lpfc_handle_eratt(phba); |
| continue; |
| } |
| |
| if (pmbox->mbxStatus) { |
| phba->sli.slistat.mbox_stat_err++; |
| if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) { |
| /* Mbox cmd cmpl error - RETRYing */ |
| lpfc_printf_log(phba, KERN_INFO, |
| LOG_MBOX | LOG_SLI, |
| "(%d):0305 Mbox cmd cmpl " |
| "error - RETRYing Data: x%x " |
| "(x%x) x%x x%x x%x\n", |
| pmb->vport ? pmb->vport->vpi :0, |
| pmbox->mbxCommand, |
| lpfc_sli4_mbox_opcode_get(phba, |
| pmb), |
| pmbox->mbxStatus, |
| pmbox->un.varWords[0], |
| pmb->vport->port_state); |
| pmbox->mbxStatus = 0; |
| pmbox->mbxOwner = OWN_HOST; |
| rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); |
| if (rc != MBX_NOT_FINISHED) |
| continue; |
| } |
| } |
| |
| /* Mailbox cmd <cmd> Cmpl <cmpl> */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, |
| "(%d):0307 Mailbox cmd x%x (x%x) Cmpl x%p " |
| "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n", |
| pmb->vport ? pmb->vport->vpi : 0, |
| pmbox->mbxCommand, |
| lpfc_sli4_mbox_opcode_get(phba, pmb), |
| pmb->mbox_cmpl, |
| *((uint32_t *) pmbox), |
| pmbox->un.varWords[0], |
| pmbox->un.varWords[1], |
| pmbox->un.varWords[2], |
| pmbox->un.varWords[3], |
| pmbox->un.varWords[4], |
| pmbox->un.varWords[5], |
| pmbox->un.varWords[6], |
| pmbox->un.varWords[7]); |
| |
| if (pmb->mbox_cmpl) |
| pmb->mbox_cmpl(phba,pmb); |
| } while (1); |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_get_buff - Get the buffer associated with the buffer tag |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @tag: buffer tag. |
| * |
| * This function is called with no lock held. When QUE_BUFTAG_BIT bit |
| * is set in the tag the buffer is posted for a particular exchange, |
| * the function will return the buffer without replacing the buffer. |
| * If the buffer is for unsolicited ELS or CT traffic, this function |
| * returns the buffer and also posts another buffer to the firmware. |
| **/ |
| static struct lpfc_dmabuf * |
| lpfc_sli_get_buff(struct lpfc_hba *phba, |
| struct lpfc_sli_ring *pring, |
| uint32_t tag) |
| { |
| struct hbq_dmabuf *hbq_entry; |
| |
| if (tag & QUE_BUFTAG_BIT) |
| return lpfc_sli_ring_taggedbuf_get(phba, pring, tag); |
| hbq_entry = lpfc_sli_hbqbuf_find(phba, tag); |
| if (!hbq_entry) |
| return NULL; |
| return &hbq_entry->dbuf; |
| } |
| |
| /** |
| * lpfc_complete_unsol_iocb - Complete an unsolicited sequence |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @saveq: Pointer to the iocbq struct representing the sequence starting frame. |
| * @fch_r_ctl: the r_ctl for the first frame of the sequence. |
| * @fch_type: the type for the first frame of the sequence. |
| * |
| * This function is called with no lock held. This function uses the r_ctl and |
| * type of the received sequence to find the correct callback function to call |
| * to process the sequence. |
| **/ |
| static int |
| lpfc_complete_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq *saveq, uint32_t fch_r_ctl, |
| uint32_t fch_type) |
| { |
| int i; |
| |
| /* unSolicited Responses */ |
| if (pring->prt[0].profile) { |
| if (pring->prt[0].lpfc_sli_rcv_unsol_event) |
| (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, |
| saveq); |
| return 1; |
| } |
| /* We must search, based on rctl / type |
| for the right routine */ |
| for (i = 0; i < pring->num_mask; i++) { |
| if ((pring->prt[i].rctl == fch_r_ctl) && |
| (pring->prt[i].type == fch_type)) { |
| if (pring->prt[i].lpfc_sli_rcv_unsol_event) |
| (pring->prt[i].lpfc_sli_rcv_unsol_event) |
| (phba, pring, saveq); |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_process_unsol_iocb - Unsolicited iocb handler |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @saveq: Pointer to the unsolicited iocb. |
| * |
| * This function is called with no lock held by the ring event handler |
| * when there is an unsolicited iocb posted to the response ring by the |
| * firmware. This function gets the buffer associated with the iocbs |
| * and calls the event handler for the ring. This function handles both |
| * qring buffers and hbq buffers. |
| * When the function returns 1 the caller can free the iocb object otherwise |
| * upper layer functions will free the iocb objects. |
| **/ |
| static int |
| lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq *saveq) |
| { |
| IOCB_t * irsp; |
| WORD5 * w5p; |
| uint32_t Rctl, Type; |
| uint32_t match; |
| struct lpfc_iocbq *iocbq; |
| struct lpfc_dmabuf *dmzbuf; |
| |
| match = 0; |
| irsp = &(saveq->iocb); |
| |
| if (irsp->ulpCommand == CMD_ASYNC_STATUS) { |
| if (pring->lpfc_sli_rcv_async_status) |
| pring->lpfc_sli_rcv_async_status(phba, pring, saveq); |
| else |
| lpfc_printf_log(phba, |
| KERN_WARNING, |
| LOG_SLI, |
| "0316 Ring %d handler: unexpected " |
| "ASYNC_STATUS iocb received evt_code " |
| "0x%x\n", |
| pring->ringno, |
| irsp->un.asyncstat.evt_code); |
| return 1; |
| } |
| |
| if ((irsp->ulpCommand == CMD_IOCB_RET_XRI64_CX) && |
| (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) { |
| if (irsp->ulpBdeCount > 0) { |
| dmzbuf = lpfc_sli_get_buff(phba, pring, |
| irsp->un.ulpWord[3]); |
| lpfc_in_buf_free(phba, dmzbuf); |
| } |
| |
| if (irsp->ulpBdeCount > 1) { |
| dmzbuf = lpfc_sli_get_buff(phba, pring, |
| irsp->unsli3.sli3Words[3]); |
| lpfc_in_buf_free(phba, dmzbuf); |
| } |
| |
| if (irsp->ulpBdeCount > 2) { |
| dmzbuf = lpfc_sli_get_buff(phba, pring, |
| irsp->unsli3.sli3Words[7]); |
| lpfc_in_buf_free(phba, dmzbuf); |
| } |
| |
| return 1; |
| } |
| |
| if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { |
| if (irsp->ulpBdeCount != 0) { |
| saveq->context2 = lpfc_sli_get_buff(phba, pring, |
| irsp->un.ulpWord[3]); |
| if (!saveq->context2) |
| lpfc_printf_log(phba, |
| KERN_ERR, |
| LOG_SLI, |
| "0341 Ring %d Cannot find buffer for " |
| "an unsolicited iocb. tag 0x%x\n", |
| pring->ringno, |
| irsp->un.ulpWord[3]); |
| } |
| if (irsp->ulpBdeCount == 2) { |
| saveq->context3 = lpfc_sli_get_buff(phba, pring, |
| irsp->unsli3.sli3Words[7]); |
| if (!saveq->context3) |
| lpfc_printf_log(phba, |
| KERN_ERR, |
| LOG_SLI, |
| "0342 Ring %d Cannot find buffer for an" |
| " unsolicited iocb. tag 0x%x\n", |
| pring->ringno, |
| irsp->unsli3.sli3Words[7]); |
| } |
| list_for_each_entry(iocbq, &saveq->list, list) { |
| irsp = &(iocbq->iocb); |
| if (irsp->ulpBdeCount != 0) { |
| iocbq->context2 = lpfc_sli_get_buff(phba, pring, |
| irsp->un.ulpWord[3]); |
| if (!iocbq->context2) |
| lpfc_printf_log(phba, |
| KERN_ERR, |
| LOG_SLI, |
| "0343 Ring %d Cannot find " |
| "buffer for an unsolicited iocb" |
| ". tag 0x%x\n", pring->ringno, |
| irsp->un.ulpWord[3]); |
| } |
| if (irsp->ulpBdeCount == 2) { |
| iocbq->context3 = lpfc_sli_get_buff(phba, pring, |
| irsp->unsli3.sli3Words[7]); |
| if (!iocbq->context3) |
| lpfc_printf_log(phba, |
| KERN_ERR, |
| LOG_SLI, |
| "0344 Ring %d Cannot find " |
| "buffer for an unsolicited " |
| "iocb. tag 0x%x\n", |
| pring->ringno, |
| irsp->unsli3.sli3Words[7]); |
| } |
| } |
| } |
| if (irsp->ulpBdeCount != 0 && |
| (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX || |
| irsp->ulpStatus == IOSTAT_INTERMED_RSP)) { |
| int found = 0; |
| |
| /* search continue save q for same XRI */ |
| list_for_each_entry(iocbq, &pring->iocb_continue_saveq, clist) { |
| if (iocbq->iocb.ulpContext == saveq->iocb.ulpContext) { |
| list_add_tail(&saveq->list, &iocbq->list); |
| found = 1; |
| break; |
| } |
| } |
| if (!found) |
| list_add_tail(&saveq->clist, |
| &pring->iocb_continue_saveq); |
| if (saveq->iocb.ulpStatus != IOSTAT_INTERMED_RSP) { |
| list_del_init(&iocbq->clist); |
| saveq = iocbq; |
| irsp = &(saveq->iocb); |
| } else |
| return 0; |
| } |
| if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) || |
| (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX) || |
| (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)) { |
| Rctl = FC_RCTL_ELS_REQ; |
| Type = FC_TYPE_ELS; |
| } else { |
| w5p = (WORD5 *)&(saveq->iocb.un.ulpWord[5]); |
| Rctl = w5p->hcsw.Rctl; |
| Type = w5p->hcsw.Type; |
| |
| /* Firmware Workaround */ |
| if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) && |
| (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX || |
| irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) { |
| Rctl = FC_RCTL_ELS_REQ; |
| Type = FC_TYPE_ELS; |
| w5p->hcsw.Rctl = Rctl; |
| w5p->hcsw.Type = Type; |
| } |
| } |
| |
| if (!lpfc_complete_unsol_iocb(phba, pring, saveq, Rctl, Type)) |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "0313 Ring %d handler: unexpected Rctl x%x " |
| "Type x%x received\n", |
| pring->ringno, Rctl, Type); |
| |
| return 1; |
| } |
| |
| /** |
| * lpfc_sli_iocbq_lookup - Find command iocb for the given response iocb |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @prspiocb: Pointer to response iocb object. |
| * |
| * This function looks up the iocb_lookup table to get the command iocb |
| * corresponding to the given response iocb using the iotag of the |
| * response iocb. This function is called with the hbalock held. |
| * This function returns the command iocb object if it finds the command |
| * iocb else returns NULL. |
| **/ |
| static struct lpfc_iocbq * |
| lpfc_sli_iocbq_lookup(struct lpfc_hba *phba, |
| struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq *prspiocb) |
| { |
| struct lpfc_iocbq *cmd_iocb = NULL; |
| uint16_t iotag; |
| |
| iotag = prspiocb->iocb.ulpIoTag; |
| |
| if (iotag != 0 && iotag <= phba->sli.last_iotag) { |
| cmd_iocb = phba->sli.iocbq_lookup[iotag]; |
| list_del_init(&cmd_iocb->list); |
| pring->txcmplq_cnt--; |
| return cmd_iocb; |
| } |
| |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0317 iotag x%x is out off " |
| "range: max iotag x%x wd0 x%x\n", |
| iotag, phba->sli.last_iotag, |
| *(((uint32_t *) &prspiocb->iocb) + 7)); |
| return NULL; |
| } |
| |
| /** |
| * lpfc_sli_iocbq_lookup_by_tag - Find command iocb for the iotag |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @iotag: IOCB tag. |
| * |
| * This function looks up the iocb_lookup table to get the command iocb |
| * corresponding to the given iotag. This function is called with the |
| * hbalock held. |
| * This function returns the command iocb object if it finds the command |
| * iocb else returns NULL. |
| **/ |
| static struct lpfc_iocbq * |
| lpfc_sli_iocbq_lookup_by_tag(struct lpfc_hba *phba, |
| struct lpfc_sli_ring *pring, uint16_t iotag) |
| { |
| struct lpfc_iocbq *cmd_iocb; |
| |
| if (iotag != 0 && iotag <= phba->sli.last_iotag) { |
| cmd_iocb = phba->sli.iocbq_lookup[iotag]; |
| list_del_init(&cmd_iocb->list); |
| pring->txcmplq_cnt--; |
| return cmd_iocb; |
| } |
| |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0372 iotag x%x is out off range: max iotag (x%x)\n", |
| iotag, phba->sli.last_iotag); |
| return NULL; |
| } |
| |
| /** |
| * lpfc_sli_process_sol_iocb - process solicited iocb completion |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @saveq: Pointer to the response iocb to be processed. |
| * |
| * This function is called by the ring event handler for non-fcp |
| * rings when there is a new response iocb in the response ring. |
| * The caller is not required to hold any locks. This function |
| * gets the command iocb associated with the response iocb and |
| * calls the completion handler for the command iocb. If there |
| * is no completion handler, the function will free the resources |
| * associated with command iocb. If the response iocb is for |
| * an already aborted command iocb, the status of the completion |
| * is changed to IOSTAT_LOCAL_REJECT/IOERR_SLI_ABORTED. |
| * This function always returns 1. |
| **/ |
| static int |
| lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq *saveq) |
| { |
| struct lpfc_iocbq *cmdiocbp; |
| int rc = 1; |
| unsigned long iflag; |
| |
| /* Based on the iotag field, get the cmd IOCB from the txcmplq */ |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq); |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| |
| if (cmdiocbp) { |
| if (cmdiocbp->iocb_cmpl) { |
| /* |
| * If an ELS command failed send an event to mgmt |
| * application. |
| */ |
| if (saveq->iocb.ulpStatus && |
| (pring->ringno == LPFC_ELS_RING) && |
| (cmdiocbp->iocb.ulpCommand == |
| CMD_ELS_REQUEST64_CR)) |
| lpfc_send_els_failure_event(phba, |
| cmdiocbp, saveq); |
| |
| /* |
| * Post all ELS completions to the worker thread. |
| * All other are passed to the completion callback. |
| */ |
| if (pring->ringno == LPFC_ELS_RING) { |
| if ((phba->sli_rev < LPFC_SLI_REV4) && |
| (cmdiocbp->iocb_flag & |
| LPFC_DRIVER_ABORTED)) { |
| spin_lock_irqsave(&phba->hbalock, |
| iflag); |
| cmdiocbp->iocb_flag &= |
| ~LPFC_DRIVER_ABORTED; |
| spin_unlock_irqrestore(&phba->hbalock, |
| iflag); |
| saveq->iocb.ulpStatus = |
| IOSTAT_LOCAL_REJECT; |
| saveq->iocb.un.ulpWord[4] = |
| IOERR_SLI_ABORTED; |
| |
| /* Firmware could still be in progress |
| * of DMAing payload, so don't free data |
| * buffer till after a hbeat. |
| */ |
| spin_lock_irqsave(&phba->hbalock, |
| iflag); |
| saveq->iocb_flag |= LPFC_DELAY_MEM_FREE; |
| spin_unlock_irqrestore(&phba->hbalock, |
| iflag); |
| } |
| if ((phba->sli_rev == LPFC_SLI_REV4) && |
| (saveq->iocb_flag & LPFC_EXCHANGE_BUSY)) { |
| /* Set cmdiocb flag for the exchange |
| * busy so sgl (xri) will not be |
| * released until the abort xri is |
| * received from hba, clear the |
| * LPFC_DRIVER_ABORTED bit in case |
| * it was driver initiated abort. |
| */ |
| spin_lock_irqsave(&phba->hbalock, |
| iflag); |
| cmdiocbp->iocb_flag &= |
| ~LPFC_DRIVER_ABORTED; |
| cmdiocbp->iocb_flag |= |
| LPFC_EXCHANGE_BUSY; |
| spin_unlock_irqrestore(&phba->hbalock, |
| iflag); |
| cmdiocbp->iocb.ulpStatus = |
| IOSTAT_LOCAL_REJECT; |
| cmdiocbp->iocb.un.ulpWord[4] = |
| IOERR_ABORT_REQUESTED; |
| /* |
| * For SLI4, irsiocb contains NO_XRI |
| * in sli_xritag, it shall not affect |
| * releasing sgl (xri) process. |
| */ |
| saveq->iocb.ulpStatus = |
| IOSTAT_LOCAL_REJECT; |
| saveq->iocb.un.ulpWord[4] = |
| IOERR_SLI_ABORTED; |
| spin_lock_irqsave(&phba->hbalock, |
| iflag); |
| saveq->iocb_flag |= LPFC_DELAY_MEM_FREE; |
| spin_unlock_irqrestore(&phba->hbalock, |
| iflag); |
| } |
| } |
| (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq); |
| } else |
| lpfc_sli_release_iocbq(phba, cmdiocbp); |
| } else { |
| /* |
| * Unknown initiating command based on the response iotag. |
| * This could be the case on the ELS ring because of |
| * lpfc_els_abort(). |
| */ |
| if (pring->ringno != LPFC_ELS_RING) { |
| /* |
| * Ring <ringno> handler: unexpected completion IoTag |
| * <IoTag> |
| */ |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "0322 Ring %d handler: " |
| "unexpected completion IoTag x%x " |
| "Data: x%x x%x x%x x%x\n", |
| pring->ringno, |
| saveq->iocb.ulpIoTag, |
| saveq->iocb.ulpStatus, |
| saveq->iocb.un.ulpWord[4], |
| saveq->iocb.ulpCommand, |
| saveq->iocb.ulpContext); |
| } |
| } |
| |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli_rsp_pointers_error - Response ring pointer error handler |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * |
| * This function is called from the iocb ring event handlers when |
| * put pointer is ahead of the get pointer for a ring. This function signal |
| * an error attention condition to the worker thread and the worker |
| * thread will transition the HBA to offline state. |
| **/ |
| static void |
| lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) |
| { |
| struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno]; |
| /* |
| * Ring <ringno> handler: portRspPut <portRspPut> is bigger than |
| * rsp ring <portRspMax> |
| */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0312 Ring %d handler: portRspPut %d " |
| "is bigger than rsp ring %d\n", |
| pring->ringno, le32_to_cpu(pgp->rspPutInx), |
| pring->numRiocb); |
| |
| phba->link_state = LPFC_HBA_ERROR; |
| |
| /* |
| * All error attention handlers are posted to |
| * worker thread |
| */ |
| phba->work_ha |= HA_ERATT; |
| phba->work_hs = HS_FFER3; |
| |
| lpfc_worker_wake_up(phba); |
| |
| return; |
| } |
| |
| /** |
| * lpfc_poll_eratt - Error attention polling timer timeout handler |
| * @ptr: Pointer to address of HBA context object. |
| * |
| * This function is invoked by the Error Attention polling timer when the |
| * timer times out. It will check the SLI Error Attention register for |
| * possible attention events. If so, it will post an Error Attention event |
| * and wake up worker thread to process it. Otherwise, it will set up the |
| * Error Attention polling timer for the next poll. |
| **/ |
| void lpfc_poll_eratt(unsigned long ptr) |
| { |
| struct lpfc_hba *phba; |
| uint32_t eratt = 0; |
| |
| phba = (struct lpfc_hba *)ptr; |
| |
| /* Check chip HA register for error event */ |
| eratt = lpfc_sli_check_eratt(phba); |
| |
| if (eratt) |
| /* Tell the worker thread there is work to do */ |
| lpfc_worker_wake_up(phba); |
| else |
| /* Restart the timer for next eratt poll */ |
| mod_timer(&phba->eratt_poll, jiffies + |
| HZ * LPFC_ERATT_POLL_INTERVAL); |
| return; |
| } |
| |
| |
| /** |
| * lpfc_sli_handle_fast_ring_event - Handle ring events on FCP ring |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @mask: Host attention register mask for this ring. |
| * |
| * This function is called from the interrupt context when there is a ring |
| * event for the fcp ring. The caller does not hold any lock. |
| * The function processes each response iocb in the response ring until it |
| * finds an iocb with LE bit set and chains all the iocbs upto the iocb with |
| * LE bit set. The function will call the completion handler of the command iocb |
| * if the response iocb indicates a completion for a command iocb or it is |
| * an abort completion. The function will call lpfc_sli_process_unsol_iocb |
| * function if this is an unsolicited iocb. |
| * This routine presumes LPFC_FCP_RING handling and doesn't bother |
| * to check it explicitly. |
| */ |
| int |
| lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba, |
| struct lpfc_sli_ring *pring, uint32_t mask) |
| { |
| struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno]; |
| IOCB_t *irsp = NULL; |
| IOCB_t *entry = NULL; |
| struct lpfc_iocbq *cmdiocbq = NULL; |
| struct lpfc_iocbq rspiocbq; |
| uint32_t status; |
| uint32_t portRspPut, portRspMax; |
| int rc = 1; |
| lpfc_iocb_type type; |
| unsigned long iflag; |
| uint32_t rsp_cmpl = 0; |
| |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| pring->stats.iocb_event++; |
| |
| /* |
| * The next available response entry should never exceed the maximum |
| * entries. If it does, treat it as an adapter hardware error. |
| */ |
| portRspMax = pring->numRiocb; |
| portRspPut = le32_to_cpu(pgp->rspPutInx); |
| if (unlikely(portRspPut >= portRspMax)) { |
| lpfc_sli_rsp_pointers_error(phba, pring); |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return 1; |
| } |
| if (phba->fcp_ring_in_use) { |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return 1; |
| } else |
| phba->fcp_ring_in_use = 1; |
| |
| rmb(); |
| while (pring->rspidx != portRspPut) { |
| /* |
| * Fetch an entry off the ring and copy it into a local data |
| * structure. The copy involves a byte-swap since the |
| * network byte order and pci byte orders are different. |
| */ |
| entry = lpfc_resp_iocb(phba, pring); |
| phba->last_completion_time = jiffies; |
| |
| if (++pring->rspidx >= portRspMax) |
| pring->rspidx = 0; |
| |
| lpfc_sli_pcimem_bcopy((uint32_t *) entry, |
| (uint32_t *) &rspiocbq.iocb, |
| phba->iocb_rsp_size); |
| INIT_LIST_HEAD(&(rspiocbq.list)); |
| irsp = &rspiocbq.iocb; |
| |
| type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK); |
| pring->stats.iocb_rsp++; |
| rsp_cmpl++; |
| |
| if (unlikely(irsp->ulpStatus)) { |
| /* |
| * If resource errors reported from HBA, reduce |
| * queuedepths of the SCSI device. |
| */ |
| if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && |
| (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) { |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| phba->lpfc_rampdown_queue_depth(phba); |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| } |
| |
| /* Rsp ring <ringno> error: IOCB */ |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "0336 Rsp Ring %d error: IOCB Data: " |
| "x%x x%x x%x x%x x%x x%x x%x x%x\n", |
| pring->ringno, |
| irsp->un.ulpWord[0], |
| irsp->un.ulpWord[1], |
| irsp->un.ulpWord[2], |
| irsp->un.ulpWord[3], |
| irsp->un.ulpWord[4], |
| irsp->un.ulpWord[5], |
| *(uint32_t *)&irsp->un1, |
| *((uint32_t *)&irsp->un1 + 1)); |
| } |
| |
| switch (type) { |
| case LPFC_ABORT_IOCB: |
| case LPFC_SOL_IOCB: |
| /* |
| * Idle exchange closed via ABTS from port. No iocb |
| * resources need to be recovered. |
| */ |
| if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) { |
| lpfc_printf_log(phba, KERN_INFO, LOG_SLI, |
| "0333 IOCB cmd 0x%x" |
| " processed. Skipping" |
| " completion\n", |
| irsp->ulpCommand); |
| break; |
| } |
| |
| cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring, |
| &rspiocbq); |
| if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) { |
| spin_unlock_irqrestore(&phba->hbalock, |
| iflag); |
| (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, |
| &rspiocbq); |
| spin_lock_irqsave(&phba->hbalock, |
| iflag); |
| } |
| break; |
| case LPFC_UNSOL_IOCB: |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq); |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| break; |
| default: |
| if (irsp->ulpCommand == CMD_ADAPTER_MSG) { |
| char adaptermsg[LPFC_MAX_ADPTMSG]; |
| memset(adaptermsg, 0, LPFC_MAX_ADPTMSG); |
| memcpy(&adaptermsg[0], (uint8_t *) irsp, |
| MAX_MSG_DATA); |
| dev_warn(&((phba->pcidev)->dev), |
| "lpfc%d: %s\n", |
| phba->brd_no, adaptermsg); |
| } else { |
| /* Unknown IOCB command */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0334 Unknown IOCB command " |
| "Data: x%x, x%x x%x x%x x%x\n", |
| type, irsp->ulpCommand, |
| irsp->ulpStatus, |
| irsp->ulpIoTag, |
| irsp->ulpContext); |
| } |
| break; |
| } |
| |
| /* |
| * The response IOCB has been processed. Update the ring |
| * pointer in SLIM. If the port response put pointer has not |
| * been updated, sync the pgp->rspPutInx and fetch the new port |
| * response put pointer. |
| */ |
| writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx); |
| |
| if (pring->rspidx == portRspPut) |
| portRspPut = le32_to_cpu(pgp->rspPutInx); |
| } |
| |
| if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) { |
| pring->stats.iocb_rsp_full++; |
| status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4)); |
| writel(status, phba->CAregaddr); |
| readl(phba->CAregaddr); |
| } |
| if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) { |
| pring->flag &= ~LPFC_CALL_RING_AVAILABLE; |
| pring->stats.iocb_cmd_empty++; |
| |
| /* Force update of the local copy of cmdGetInx */ |
| pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); |
| lpfc_sli_resume_iocb(phba, pring); |
| |
| if ((pring->lpfc_sli_cmd_available)) |
| (pring->lpfc_sli_cmd_available) (phba, pring); |
| |
| } |
| |
| phba->fcp_ring_in_use = 0; |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli_sp_handle_rspiocb - Handle slow-path response iocb |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @rspiocbp: Pointer to driver response IOCB object. |
| * |
| * This function is called from the worker thread when there is a slow-path |
| * response IOCB to process. This function chains all the response iocbs until |
| * seeing the iocb with the LE bit set. The function will call |
| * lpfc_sli_process_sol_iocb function if the response iocb indicates a |
| * completion of a command iocb. The function will call the |
| * lpfc_sli_process_unsol_iocb function if this is an unsolicited iocb. |
| * The function frees the resources or calls the completion handler if this |
| * iocb is an abort completion. The function returns NULL when the response |
| * iocb has the LE bit set and all the chained iocbs are processed, otherwise |
| * this function shall chain the iocb on to the iocb_continueq and return the |
| * response iocb passed in. |
| **/ |
| static struct lpfc_iocbq * |
| lpfc_sli_sp_handle_rspiocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq *rspiocbp) |
| { |
| struct lpfc_iocbq *saveq; |
| struct lpfc_iocbq *cmdiocbp; |
| struct lpfc_iocbq *next_iocb; |
| IOCB_t *irsp = NULL; |
| uint32_t free_saveq; |
| uint8_t iocb_cmd_type; |
| lpfc_iocb_type type; |
| unsigned long iflag; |
| int rc; |
| |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| /* First add the response iocb to the countinueq list */ |
| list_add_tail(&rspiocbp->list, &(pring->iocb_continueq)); |
| pring->iocb_continueq_cnt++; |
| |
| /* Now, determine whetehr the list is completed for processing */ |
| irsp = &rspiocbp->iocb; |
| if (irsp->ulpLe) { |
| /* |
| * By default, the driver expects to free all resources |
| * associated with this iocb completion. |
| */ |
| free_saveq = 1; |
| saveq = list_get_first(&pring->iocb_continueq, |
| struct lpfc_iocbq, list); |
| irsp = &(saveq->iocb); |
| list_del_init(&pring->iocb_continueq); |
| pring->iocb_continueq_cnt = 0; |
| |
| pring->stats.iocb_rsp++; |
| |
| /* |
| * If resource errors reported from HBA, reduce |
| * queuedepths of the SCSI device. |
| */ |
| if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && |
| (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) { |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| phba->lpfc_rampdown_queue_depth(phba); |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| } |
| |
| if (irsp->ulpStatus) { |
| /* Rsp ring <ringno> error: IOCB */ |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "0328 Rsp Ring %d error: " |
| "IOCB Data: " |
| "x%x x%x x%x x%x " |
| "x%x x%x x%x x%x " |
| "x%x x%x x%x x%x " |
| "x%x x%x x%x x%x\n", |
| pring->ringno, |
| irsp->un.ulpWord[0], |
| irsp->un.ulpWord[1], |
| irsp->un.ulpWord[2], |
| irsp->un.ulpWord[3], |
| irsp->un.ulpWord[4], |
| irsp->un.ulpWord[5], |
| *(((uint32_t *) irsp) + 6), |
| *(((uint32_t *) irsp) + 7), |
| *(((uint32_t *) irsp) + 8), |
| *(((uint32_t *) irsp) + 9), |
| *(((uint32_t *) irsp) + 10), |
| *(((uint32_t *) irsp) + 11), |
| *(((uint32_t *) irsp) + 12), |
| *(((uint32_t *) irsp) + 13), |
| *(((uint32_t *) irsp) + 14), |
| *(((uint32_t *) irsp) + 15)); |
| } |
| |
| /* |
| * Fetch the IOCB command type and call the correct completion |
| * routine. Solicited and Unsolicited IOCBs on the ELS ring |
| * get freed back to the lpfc_iocb_list by the discovery |
| * kernel thread. |
| */ |
| iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK; |
| type = lpfc_sli_iocb_cmd_type(iocb_cmd_type); |
| switch (type) { |
| case LPFC_SOL_IOCB: |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| rc = lpfc_sli_process_sol_iocb(phba, pring, saveq); |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| break; |
| |
| case LPFC_UNSOL_IOCB: |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| rc = lpfc_sli_process_unsol_iocb(phba, pring, saveq); |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| if (!rc) |
| free_saveq = 0; |
| break; |
| |
| case LPFC_ABORT_IOCB: |
| cmdiocbp = NULL; |
| if (irsp->ulpCommand != CMD_XRI_ABORTED_CX) |
| cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, |
| saveq); |
| if (cmdiocbp) { |
| /* Call the specified completion routine */ |
| if (cmdiocbp->iocb_cmpl) { |
| spin_unlock_irqrestore(&phba->hbalock, |
| iflag); |
| (cmdiocbp->iocb_cmpl)(phba, cmdiocbp, |
| saveq); |
| spin_lock_irqsave(&phba->hbalock, |
| iflag); |
| } else |
| __lpfc_sli_release_iocbq(phba, |
| cmdiocbp); |
| } |
| break; |
| |
| case LPFC_UNKNOWN_IOCB: |
| if (irsp->ulpCommand == CMD_ADAPTER_MSG) { |
| char adaptermsg[LPFC_MAX_ADPTMSG]; |
| memset(adaptermsg, 0, LPFC_MAX_ADPTMSG); |
| memcpy(&adaptermsg[0], (uint8_t *)irsp, |
| MAX_MSG_DATA); |
| dev_warn(&((phba->pcidev)->dev), |
| "lpfc%d: %s\n", |
| phba->brd_no, adaptermsg); |
| } else { |
| /* Unknown IOCB command */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0335 Unknown IOCB " |
| "command Data: x%x " |
| "x%x x%x x%x\n", |
| irsp->ulpCommand, |
| irsp->ulpStatus, |
| irsp->ulpIoTag, |
| irsp->ulpContext); |
| } |
| break; |
| } |
| |
| if (free_saveq) { |
| list_for_each_entry_safe(rspiocbp, next_iocb, |
| &saveq->list, list) { |
| list_del(&rspiocbp->list); |
| __lpfc_sli_release_iocbq(phba, rspiocbp); |
| } |
| __lpfc_sli_release_iocbq(phba, saveq); |
| } |
| rspiocbp = NULL; |
| } |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return rspiocbp; |
| } |
| |
| /** |
| * lpfc_sli_handle_slow_ring_event - Wrapper func for handling slow-path iocbs |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @mask: Host attention register mask for this ring. |
| * |
| * This routine wraps the actual slow_ring event process routine from the |
| * API jump table function pointer from the lpfc_hba struct. |
| **/ |
| void |
| lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba, |
| struct lpfc_sli_ring *pring, uint32_t mask) |
| { |
| phba->lpfc_sli_handle_slow_ring_event(phba, pring, mask); |
| } |
| |
| /** |
| * lpfc_sli_handle_slow_ring_event_s3 - Handle SLI3 ring event for non-FCP rings |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @mask: Host attention register mask for this ring. |
| * |
| * This function is called from the worker thread when there is a ring event |
| * for non-fcp rings. The caller does not hold any lock. The function will |
| * remove each response iocb in the response ring and calls the handle |
| * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it. |
| **/ |
| static void |
| lpfc_sli_handle_slow_ring_event_s3(struct lpfc_hba *phba, |
| struct lpfc_sli_ring *pring, uint32_t mask) |
| { |
| struct lpfc_pgp *pgp; |
| IOCB_t *entry; |
| IOCB_t *irsp = NULL; |
| struct lpfc_iocbq *rspiocbp = NULL; |
| uint32_t portRspPut, portRspMax; |
| unsigned long iflag; |
| uint32_t status; |
| |
| pgp = &phba->port_gp[pring->ringno]; |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| pring->stats.iocb_event++; |
| |
| /* |
| * The next available response entry should never exceed the maximum |
| * entries. If it does, treat it as an adapter hardware error. |
| */ |
| portRspMax = pring->numRiocb; |
| portRspPut = le32_to_cpu(pgp->rspPutInx); |
| if (portRspPut >= portRspMax) { |
| /* |
| * Ring <ringno> handler: portRspPut <portRspPut> is bigger than |
| * rsp ring <portRspMax> |
| */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0303 Ring %d handler: portRspPut %d " |
| "is bigger than rsp ring %d\n", |
| pring->ringno, portRspPut, portRspMax); |
| |
| phba->link_state = LPFC_HBA_ERROR; |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| |
| phba->work_hs = HS_FFER3; |
| lpfc_handle_eratt(phba); |
| |
| return; |
| } |
| |
| rmb(); |
| while (pring->rspidx != portRspPut) { |
| /* |
| * Build a completion list and call the appropriate handler. |
| * The process is to get the next available response iocb, get |
| * a free iocb from the list, copy the response data into the |
| * free iocb, insert to the continuation list, and update the |
| * next response index to slim. This process makes response |
| * iocb's in the ring available to DMA as fast as possible but |
| * pays a penalty for a copy operation. Since the iocb is |
| * only 32 bytes, this penalty is considered small relative to |
| * the PCI reads for register values and a slim write. When |
| * the ulpLe field is set, the entire Command has been |
| * received. |
| */ |
| entry = lpfc_resp_iocb(phba, pring); |
| |
| phba->last_completion_time = jiffies; |
| rspiocbp = __lpfc_sli_get_iocbq(phba); |
| if (rspiocbp == NULL) { |
| printk(KERN_ERR "%s: out of buffers! Failing " |
| "completion.\n", __func__); |
| break; |
| } |
| |
| lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, |
| phba->iocb_rsp_size); |
| irsp = &rspiocbp->iocb; |
| |
| if (++pring->rspidx >= portRspMax) |
| pring->rspidx = 0; |
| |
| if (pring->ringno == LPFC_ELS_RING) { |
| lpfc_debugfs_slow_ring_trc(phba, |
| "IOCB rsp ring: wd4:x%08x wd6:x%08x wd7:x%08x", |
| *(((uint32_t *) irsp) + 4), |
| *(((uint32_t *) irsp) + 6), |
| *(((uint32_t *) irsp) + 7)); |
| } |
| |
| writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx); |
| |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| /* Handle the response IOCB */ |
| rspiocbp = lpfc_sli_sp_handle_rspiocb(phba, pring, rspiocbp); |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| |
| /* |
| * If the port response put pointer has not been updated, sync |
| * the pgp->rspPutInx in the MAILBOX_tand fetch the new port |
| * response put pointer. |
| */ |
| if (pring->rspidx == portRspPut) { |
| portRspPut = le32_to_cpu(pgp->rspPutInx); |
| } |
| } /* while (pring->rspidx != portRspPut) */ |
| |
| if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) { |
| /* At least one response entry has been freed */ |
| pring->stats.iocb_rsp_full++; |
| /* SET RxRE_RSP in Chip Att register */ |
| status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4)); |
| writel(status, phba->CAregaddr); |
| readl(phba->CAregaddr); /* flush */ |
| } |
| if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) { |
| pring->flag &= ~LPFC_CALL_RING_AVAILABLE; |
| pring->stats.iocb_cmd_empty++; |
| |
| /* Force update of the local copy of cmdGetInx */ |
| pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); |
| lpfc_sli_resume_iocb(phba, pring); |
| |
| if ((pring->lpfc_sli_cmd_available)) |
| (pring->lpfc_sli_cmd_available) (phba, pring); |
| |
| } |
| |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return; |
| } |
| |
| /** |
| * lpfc_sli_handle_slow_ring_event_s4 - Handle SLI4 slow-path els events |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @mask: Host attention register mask for this ring. |
| * |
| * This function is called from the worker thread when there is a pending |
| * ELS response iocb on the driver internal slow-path response iocb worker |
| * queue. The caller does not hold any lock. The function will remove each |
| * response iocb from the response worker queue and calls the handle |
| * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it. |
| **/ |
| static void |
| lpfc_sli_handle_slow_ring_event_s4(struct lpfc_hba *phba, |
| struct lpfc_sli_ring *pring, uint32_t mask) |
| { |
| struct lpfc_iocbq *irspiocbq; |
| struct hbq_dmabuf *dmabuf; |
| struct lpfc_cq_event *cq_event; |
| unsigned long iflag; |
| |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| phba->hba_flag &= ~HBA_SP_QUEUE_EVT; |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| while (!list_empty(&phba->sli4_hba.sp_queue_event)) { |
| /* Get the response iocb from the head of work queue */ |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| list_remove_head(&phba->sli4_hba.sp_queue_event, |
| cq_event, struct lpfc_cq_event, list); |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| |
| switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) { |
| case CQE_CODE_COMPL_WQE: |
| irspiocbq = container_of(cq_event, struct lpfc_iocbq, |
| cq_event); |
| /* Translate ELS WCQE to response IOCBQ */ |
| irspiocbq = lpfc_sli4_els_wcqe_to_rspiocbq(phba, |
| irspiocbq); |
| if (irspiocbq) |
| lpfc_sli_sp_handle_rspiocb(phba, pring, |
| irspiocbq); |
| break; |
| case CQE_CODE_RECEIVE: |
| dmabuf = container_of(cq_event, struct hbq_dmabuf, |
| cq_event); |
| lpfc_sli4_handle_received_buffer(phba, dmabuf); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| /** |
| * lpfc_sli_abort_iocb_ring - Abort all iocbs in the ring |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * |
| * This function aborts all iocbs in the given ring and frees all the iocb |
| * objects in txq. This function issues an abort iocb for all the iocb commands |
| * in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before |
| * the return of this function. The caller is not required to hold any locks. |
| **/ |
| void |
| lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) |
| { |
| LIST_HEAD(completions); |
| struct lpfc_iocbq *iocb, *next_iocb; |
| |
| if (pring->ringno == LPFC_ELS_RING) { |
| lpfc_fabric_abort_hba(phba); |
| } |
| |
| /* Error everything on txq and txcmplq |
| * First do the txq. |
| */ |
| spin_lock_irq(&phba->hbalock); |
| list_splice_init(&pring->txq, &completions); |
| pring->txq_cnt = 0; |
| |
| /* Next issue ABTS for everything on the txcmplq */ |
| list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) |
| lpfc_sli_issue_abort_iotag(phba, pring, iocb); |
| |
| spin_unlock_irq(&phba->hbalock); |
| |
| /* Cancel all the IOCBs from the completions list */ |
| lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, |
| IOERR_SLI_ABORTED); |
| } |
| |
| /** |
| * lpfc_sli_flush_fcp_rings - flush all iocbs in the fcp ring |
| * @phba: Pointer to HBA context object. |
| * |
| * This function flushes all iocbs in the fcp ring and frees all the iocb |
| * objects in txq and txcmplq. This function will not issue abort iocbs |
| * for all the iocb commands in txcmplq, they will just be returned with |
| * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI |
| * slot has been permanently disabled. |
| **/ |
| void |
| lpfc_sli_flush_fcp_rings(struct lpfc_hba *phba) |
| { |
| LIST_HEAD(txq); |
| LIST_HEAD(txcmplq); |
| struct lpfc_sli *psli = &phba->sli; |
| struct lpfc_sli_ring *pring; |
| |
| /* Currently, only one fcp ring */ |
| pring = &psli->ring[psli->fcp_ring]; |
| |
| spin_lock_irq(&phba->hbalock); |
| /* Retrieve everything on txq */ |
| list_splice_init(&pring->txq, &txq); |
| pring->txq_cnt = 0; |
| |
| /* Retrieve everything on the txcmplq */ |
| list_splice_init(&pring->txcmplq, &txcmplq); |
| pring->txcmplq_cnt = 0; |
| spin_unlock_irq(&phba->hbalock); |
| |
| /* Flush the txq */ |
| lpfc_sli_cancel_iocbs(phba, &txq, IOSTAT_LOCAL_REJECT, |
| IOERR_SLI_DOWN); |
| |
| /* Flush the txcmpq */ |
| lpfc_sli_cancel_iocbs(phba, &txcmplq, IOSTAT_LOCAL_REJECT, |
| IOERR_SLI_DOWN); |
| } |
| |
| /** |
| * lpfc_sli_brdready_s3 - Check for sli3 host ready status |
| * @phba: Pointer to HBA context object. |
| * @mask: Bit mask to be checked. |
| * |
| * This function reads the host status register and compares |
| * with the provided bit mask to check if HBA completed |
| * the restart. This function will wait in a loop for the |
| * HBA to complete restart. If the HBA does not restart within |
| * 15 iterations, the function will reset the HBA again. The |
| * function returns 1 when HBA fail to restart otherwise returns |
| * zero. |
| **/ |
| static int |
| lpfc_sli_brdready_s3(struct lpfc_hba *phba, uint32_t mask) |
| { |
| uint32_t status; |
| int i = 0; |
| int retval = 0; |
| |
| /* Read the HBA Host Status Register */ |
| status = readl(phba->HSregaddr); |
| |
| /* |
| * Check status register every 100ms for 5 retries, then every |
| * 500ms for 5, then every 2.5 sec for 5, then reset board and |
| * every 2.5 sec for 4. |
| * Break our of the loop if errors occurred during init. |
| */ |
| while (((status & mask) != mask) && |
| !(status & HS_FFERM) && |
| i++ < 20) { |
| |
| if (i <= 5) |
| msleep(10); |
| else if (i <= 10) |
| msleep(500); |
| else |
| msleep(2500); |
| |
| if (i == 15) { |
| /* Do post */ |
| phba->pport->port_state = LPFC_VPORT_UNKNOWN; |
| lpfc_sli_brdrestart(phba); |
| } |
| /* Read the HBA Host Status Register */ |
| status = readl(phba->HSregaddr); |
| } |
| |
| /* Check to see if any errors occurred during init */ |
| if ((status & HS_FFERM) || (i >= 20)) { |
| phba->link_state = LPFC_HBA_ERROR; |
| retval = 1; |
| } |
| |
| return retval; |
| } |
| |
| /** |
| * lpfc_sli_brdready_s4 - Check for sli4 host ready status |
| * @phba: Pointer to HBA context object. |
| * @mask: Bit mask to be checked. |
| * |
| * This function checks the host status register to check if HBA is |
| * ready. This function will wait in a loop for the HBA to be ready |
| * If the HBA is not ready , the function will will reset the HBA PCI |
| * function again. The function returns 1 when HBA fail to be ready |
| * otherwise returns zero. |
| **/ |
| static int |
| lpfc_sli_brdready_s4(struct lpfc_hba *phba, uint32_t mask) |
| { |
| uint32_t status; |
| int retval = 0; |
| |
| /* Read the HBA Host Status Register */ |
| status = lpfc_sli4_post_status_check(phba); |
| |
| if (status) { |
| phba->pport->port_state = LPFC_VPORT_UNKNOWN; |
| lpfc_sli_brdrestart(phba); |
| status = lpfc_sli4_post_status_check(phba); |
| } |
| |
| /* Check to see if any errors occurred during init */ |
| if (status) { |
| phba->link_state = LPFC_HBA_ERROR; |
| retval = 1; |
| } else |
| phba->sli4_hba.intr_enable = 0; |
| |
| return retval; |
| } |
| |
| /** |
| * lpfc_sli_brdready - Wrapper func for checking the hba readyness |
| * @phba: Pointer to HBA context object. |
| * @mask: Bit mask to be checked. |
| * |
| * This routine wraps the actual SLI3 or SLI4 hba readyness check routine |
| * from the API jump table function pointer from the lpfc_hba struct. |
| **/ |
| int |
| lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask) |
| { |
| return phba->lpfc_sli_brdready(phba, mask); |
| } |
| |
| #define BARRIER_TEST_PATTERN (0xdeadbeef) |
| |
| /** |
| * lpfc_reset_barrier - Make HBA ready for HBA reset |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called before resetting an HBA. This |
| * function requests HBA to quiesce DMAs before a reset. |
| **/ |
| void lpfc_reset_barrier(struct lpfc_hba *phba) |
| { |
| uint32_t __iomem *resp_buf; |
| uint32_t __iomem *mbox_buf; |
| volatile uint32_t mbox; |
| uint32_t hc_copy; |
| int i; |
| uint8_t hdrtype; |
| |
| pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype); |
| if (hdrtype != 0x80 || |
| (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID && |
| FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID)) |
| return; |
| |
| /* |
| * Tell the other part of the chip to suspend temporarily all |
| * its DMA activity. |
| */ |
| resp_buf = phba->MBslimaddr; |
| |
| /* Disable the error attention */ |
| hc_copy = readl(phba->HCregaddr); |
| writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| phba->link_flag |= LS_IGNORE_ERATT; |
| |
| if (readl(phba->HAregaddr) & HA_ERATT) { |
| /* Clear Chip error bit */ |
| writel(HA_ERATT, phba->HAregaddr); |
| phba->pport->stopped = 1; |
| } |
| |
| mbox = 0; |
| ((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD; |
| ((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP; |
| |
| writel(BARRIER_TEST_PATTERN, (resp_buf + 1)); |
| mbox_buf = phba->MBslimaddr; |
| writel(mbox, mbox_buf); |
| |
| for (i = 0; |
| readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN) && i < 50; i++) |
| mdelay(1); |
| |
| if (readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN)) { |
| if (phba->sli.sli_flag & LPFC_SLI_ACTIVE || |
| phba->pport->stopped) |
| goto restore_hc; |
| else |
| goto clear_errat; |
| } |
| |
| ((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST; |
| for (i = 0; readl(resp_buf) != mbox && i < 500; i++) |
| mdelay(1); |
| |
| clear_errat: |
| |
| while (!(readl(phba->HAregaddr) & HA_ERATT) && ++i < 500) |
| mdelay(1); |
| |
| if (readl(phba->HAregaddr) & HA_ERATT) { |
| writel(HA_ERATT, phba->HAregaddr); |
| phba->pport->stopped = 1; |
| } |
| |
| restore_hc: |
| phba->link_flag &= ~LS_IGNORE_ERATT; |
| writel(hc_copy, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| } |
| |
| /** |
| * lpfc_sli_brdkill - Issue a kill_board mailbox command |
| * @phba: Pointer to HBA context object. |
| * |
| * This function issues a kill_board mailbox command and waits for |
| * the error attention interrupt. This function is called for stopping |
| * the firmware processing. The caller is not required to hold any |
| * locks. This function calls lpfc_hba_down_post function to free |
| * any pending commands after the kill. The function will return 1 when it |
| * fails to kill the board else will return 0. |
| **/ |
| int |
| lpfc_sli_brdkill(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli; |
| LPFC_MBOXQ_t *pmb; |
| uint32_t status; |
| uint32_t ha_copy; |
| int retval; |
| int i = 0; |
| |
| psli = &phba->sli; |
| |
| /* Kill HBA */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_SLI, |
| "0329 Kill HBA Data: x%x x%x\n", |
| phba->pport->port_state, psli->sli_flag); |
| |
| pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!pmb) |
| return 1; |
| |
| /* Disable the error attention */ |
| spin_lock_irq(&phba->hbalock); |
| status = readl(phba->HCregaddr); |
| status &= ~HC_ERINT_ENA; |
| writel(status, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| phba->link_flag |= LS_IGNORE_ERATT; |
| spin_unlock_irq(&phba->hbalock); |
| |
| lpfc_kill_board(phba, pmb); |
| pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); |
| |
| if (retval != MBX_SUCCESS) { |
| if (retval != MBX_BUSY) |
| mempool_free(pmb, phba->mbox_mem_pool); |
| spin_lock_irq(&phba->hbalock); |
| phba->link_flag &= ~LS_IGNORE_ERATT; |
| spin_unlock_irq(&phba->hbalock); |
| return 1; |
| } |
| |
| spin_lock_irq(&phba->hbalock); |
| psli->sli_flag &= ~LPFC_SLI_ACTIVE; |
| spin_unlock_irq(&phba->hbalock); |
| |
| mempool_free(pmb, phba->mbox_mem_pool); |
| |
| /* There is no completion for a KILL_BOARD mbox cmd. Check for an error |
| * attention every 100ms for 3 seconds. If we don't get ERATT after |
| * 3 seconds we still set HBA_ERROR state because the status of the |
| * board is now undefined. |
| */ |
| ha_copy = readl(phba->HAregaddr); |
| |
| while ((i++ < 30) && !(ha_copy & HA_ERATT)) { |
| mdelay(100); |
| ha_copy = readl(phba->HAregaddr); |
| } |
| |
| del_timer_sync(&psli->mbox_tmo); |
| if (ha_copy & HA_ERATT) { |
| writel(HA_ERATT, phba->HAregaddr); |
| phba->pport->stopped = 1; |
| } |
| spin_lock_irq(&phba->hbalock); |
| psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| psli->mbox_active = NULL; |
| phba->link_flag &= ~LS_IGNORE_ERATT; |
| spin_unlock_irq(&phba->hbalock); |
| |
| lpfc_hba_down_post(phba); |
| phba->link_state = LPFC_HBA_ERROR; |
| |
| return ha_copy & HA_ERATT ? 0 : 1; |
| } |
| |
| /** |
| * lpfc_sli_brdreset - Reset a sli-2 or sli-3 HBA |
| * @phba: Pointer to HBA context object. |
| * |
| * This function resets the HBA by writing HC_INITFF to the control |
| * register. After the HBA resets, this function resets all the iocb ring |
| * indices. This function disables PCI layer parity checking during |
| * the reset. |
| * This function returns 0 always. |
| * The caller is not required to hold any locks. |
| **/ |
| int |
| lpfc_sli_brdreset(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli; |
| struct lpfc_sli_ring *pring; |
| uint16_t cfg_value; |
| int i; |
| |
| psli = &phba->sli; |
| |
| /* Reset HBA */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_SLI, |
| "0325 Reset HBA Data: x%x x%x\n", |
| phba->pport->port_state, psli->sli_flag); |
| |
| /* perform board reset */ |
| phba->fc_eventTag = 0; |
| phba->link_events = 0; |
| phba->pport->fc_myDID = 0; |
| phba->pport->fc_prevDID = 0; |
| |
| /* Turn off parity checking and serr during the physical reset */ |
| pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value); |
| pci_write_config_word(phba->pcidev, PCI_COMMAND, |
| (cfg_value & |
| ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR))); |
| |
| psli->sli_flag &= ~(LPFC_SLI_ACTIVE | LPFC_PROCESS_LA); |
| |
| /* Now toggle INITFF bit in the Host Control Register */ |
| writel(HC_INITFF, phba->HCregaddr); |
| mdelay(1); |
| readl(phba->HCregaddr); /* flush */ |
| writel(0, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| |
| /* Restore PCI cmd register */ |
| pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value); |
| |
| /* Initialize relevant SLI info */ |
| for (i = 0; i < psli->num_rings; i++) { |
| pring = &psli->ring[i]; |
| pring->flag = 0; |
| pring->rspidx = 0; |
| pring->next_cmdidx = 0; |
| pring->local_getidx = 0; |
| pring->cmdidx = 0; |
| pring->missbufcnt = 0; |
| } |
| |
| phba->link_state = LPFC_WARM_START; |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli4_brdreset - Reset a sli-4 HBA |
| * @phba: Pointer to HBA context object. |
| * |
| * This function resets a SLI4 HBA. This function disables PCI layer parity |
| * checking during resets the device. The caller is not required to hold |
| * any locks. |
| * |
| * This function returns 0 always. |
| **/ |
| int |
| lpfc_sli4_brdreset(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli = &phba->sli; |
| uint16_t cfg_value; |
| uint8_t qindx; |
| |
| /* Reset HBA */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_SLI, |
| "0295 Reset HBA Data: x%x x%x\n", |
| phba->pport->port_state, psli->sli_flag); |
| |
| /* perform board reset */ |
| phba->fc_eventTag = 0; |
| phba->link_events = 0; |
| phba->pport->fc_myDID = 0; |
| phba->pport->fc_prevDID = 0; |
| |
| /* Turn off parity checking and serr during the physical reset */ |
| pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value); |
| pci_write_config_word(phba->pcidev, PCI_COMMAND, |
| (cfg_value & |
| ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR))); |
| |
| spin_lock_irq(&phba->hbalock); |
| psli->sli_flag &= ~(LPFC_PROCESS_LA); |
| phba->fcf.fcf_flag = 0; |
| /* Clean up the child queue list for the CQs */ |
| list_del_init(&phba->sli4_hba.mbx_wq->list); |
| list_del_init(&phba->sli4_hba.els_wq->list); |
| list_del_init(&phba->sli4_hba.hdr_rq->list); |
| list_del_init(&phba->sli4_hba.dat_rq->list); |
| list_del_init(&phba->sli4_hba.mbx_cq->list); |
| list_del_init(&phba->sli4_hba.els_cq->list); |
| for (qindx = 0; qindx < phba->cfg_fcp_wq_count; qindx++) |
| list_del_init(&phba->sli4_hba.fcp_wq[qindx]->list); |
| for (qindx = 0; qindx < phba->cfg_fcp_eq_count; qindx++) |
| list_del_init(&phba->sli4_hba.fcp_cq[qindx]->list); |
| spin_unlock_irq(&phba->hbalock); |
| |
| /* Now physically reset the device */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_INIT, |
| "0389 Performing PCI function reset!\n"); |
| /* Perform FCoE PCI function reset */ |
| lpfc_pci_function_reset(phba); |
| |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_brdrestart_s3 - Restart a sli-3 hba |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called in the SLI initialization code path to |
| * restart the HBA. The caller is not required to hold any lock. |
| * This function writes MBX_RESTART mailbox command to the SLIM and |
| * resets the HBA. At the end of the function, it calls lpfc_hba_down_post |
| * function to free any pending commands. The function enables |
| * POST only during the first initialization. The function returns zero. |
| * The function does not guarantee completion of MBX_RESTART mailbox |
| * command before the return of this function. |
| **/ |
| static int |
| lpfc_sli_brdrestart_s3(struct lpfc_hba *phba) |
| { |
| MAILBOX_t *mb; |
| struct lpfc_sli *psli; |
| volatile uint32_t word0; |
| void __iomem *to_slim; |
| uint32_t hba_aer_enabled; |
| |
| spin_lock_irq(&phba->hbalock); |
| |
| /* Take PCIe device Advanced Error Reporting (AER) state */ |
| hba_aer_enabled = phba->hba_flag & HBA_AER_ENABLED; |
| |
| psli = &phba->sli; |
| |
| /* Restart HBA */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_SLI, |
| "0337 Restart HBA Data: x%x x%x\n", |
| phba->pport->port_state, psli->sli_flag); |
| |
| word0 = 0; |
| mb = (MAILBOX_t *) &word0; |
| mb->mbxCommand = MBX_RESTART; |
| mb->mbxHc = 1; |
| |
| lpfc_reset_barrier(phba); |
| |
| to_slim = phba->MBslimaddr; |
| writel(*(uint32_t *) mb, to_slim); |
| readl(to_slim); /* flush */ |
| |
| /* Only skip post after fc_ffinit is completed */ |
| if (phba->pport->port_state) |
| word0 = 1; /* This is really setting up word1 */ |
| else |
| word0 = 0; /* This is really setting up word1 */ |
| to_slim = phba->MBslimaddr + sizeof (uint32_t); |
| writel(*(uint32_t *) mb, to_slim); |
| readl(to_slim); /* flush */ |
| |
| lpfc_sli_brdreset(phba); |
| phba->pport->stopped = 0; |
| phba->link_state = LPFC_INIT_START; |
| phba->hba_flag = 0; |
| spin_unlock_irq(&phba->hbalock); |
| |
| memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets)); |
| psli->stats_start = get_seconds(); |
| |
| /* Give the INITFF and Post time to settle. */ |
| mdelay(100); |
| |
| /* Reset HBA AER if it was enabled, note hba_flag was reset above */ |
| if (hba_aer_enabled) |
| pci_disable_pcie_error_reporting(phba->pcidev); |
| |
| lpfc_hba_down_post(phba); |
| |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_brdrestart_s4 - Restart the sli-4 hba |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called in the SLI initialization code path to restart |
| * a SLI4 HBA. The caller is not required to hold any lock. |
| * At the end of the function, it calls lpfc_hba_down_post function to |
| * free any pending commands. |
| **/ |
| static int |
| lpfc_sli_brdrestart_s4(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli = &phba->sli; |
| |
| |
| /* Restart HBA */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_SLI, |
| "0296 Restart HBA Data: x%x x%x\n", |
| phba->pport->port_state, psli->sli_flag); |
| |
| lpfc_sli4_brdreset(phba); |
| |
| spin_lock_irq(&phba->hbalock); |
| phba->pport->stopped = 0; |
| phba->link_state = LPFC_INIT_START; |
| phba->hba_flag = 0; |
| spin_unlock_irq(&phba->hbalock); |
| |
| memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets)); |
| psli->stats_start = get_seconds(); |
| |
| lpfc_hba_down_post(phba); |
| |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_brdrestart - Wrapper func for restarting hba |
| * @phba: Pointer to HBA context object. |
| * |
| * This routine wraps the actual SLI3 or SLI4 hba restart routine from the |
| * API jump table function pointer from the lpfc_hba struct. |
| **/ |
| int |
| lpfc_sli_brdrestart(struct lpfc_hba *phba) |
| { |
| return phba->lpfc_sli_brdrestart(phba); |
| } |
| |
| /** |
| * lpfc_sli_chipset_init - Wait for the restart of the HBA after a restart |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called after a HBA restart to wait for successful |
| * restart of the HBA. Successful restart of the HBA is indicated by |
| * HS_FFRDY and HS_MBRDY bits. If the HBA fails to restart even after 15 |
| * iteration, the function will restart the HBA again. The function returns |
| * zero if HBA successfully restarted else returns negative error code. |
| **/ |
| static int |
| lpfc_sli_chipset_init(struct lpfc_hba *phba) |
| { |
| uint32_t status, i = 0; |
| |
| /* Read the HBA Host Status Register */ |
| status = readl(phba->HSregaddr); |
| |
| /* Check status register to see what current state is */ |
| i = 0; |
| while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) { |
| |
| /* Check every 100ms for 5 retries, then every 500ms for 5, then |
| * every 2.5 sec for 5, then reset board and every 2.5 sec for |
| * 4. |
| */ |
| if (i++ >= 20) { |
| /* Adapter failed to init, timeout, status reg |
| <status> */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0436 Adapter failed to init, " |
| "timeout, status reg x%x, " |
| "FW Data: A8 x%x AC x%x\n", status, |
| readl(phba->MBslimaddr + 0xa8), |
| readl(phba->MBslimaddr + 0xac)); |
| phba->link_state = LPFC_HBA_ERROR; |
| return -ETIMEDOUT; |
| } |
| |
| /* Check to see if any errors occurred during init */ |
| if (status & HS_FFERM) { |
| /* ERROR: During chipset initialization */ |
| /* Adapter failed to init, chipset, status reg |
| <status> */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0437 Adapter failed to init, " |
| "chipset, status reg x%x, " |
| "FW Data: A8 x%x AC x%x\n", status, |
| readl(phba->MBslimaddr + 0xa8), |
| readl(phba->MBslimaddr + 0xac)); |
| phba->link_state = LPFC_HBA_ERROR; |
| return -EIO; |
| } |
| |
| if (i <= 5) { |
| msleep(10); |
| } else if (i <= 10) { |
| msleep(500); |
| } else { |
| msleep(2500); |
| } |
| |
| if (i == 15) { |
| /* Do post */ |
| phba->pport->port_state = LPFC_VPORT_UNKNOWN; |
| lpfc_sli_brdrestart(phba); |
| } |
| /* Read the HBA Host Status Register */ |
| status = readl(phba->HSregaddr); |
| } |
| |
| /* Check to see if any errors occurred during init */ |
| if (status & HS_FFERM) { |
| /* ERROR: During chipset initialization */ |
| /* Adapter failed to init, chipset, status reg <status> */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0438 Adapter failed to init, chipset, " |
| "status reg x%x, " |
| "FW Data: A8 x%x AC x%x\n", status, |
| readl(phba->MBslimaddr + 0xa8), |
| readl(phba->MBslimaddr + 0xac)); |
| phba->link_state = LPFC_HBA_ERROR; |
| return -EIO; |
| } |
| |
| /* Clear all interrupt enable conditions */ |
| writel(0, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| |
| /* setup host attn register */ |
| writel(0xffffffff, phba->HAregaddr); |
| readl(phba->HAregaddr); /* flush */ |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_hbq_count - Get the number of HBQs to be configured |
| * |
| * This function calculates and returns the number of HBQs required to be |
| * configured. |
| **/ |
| int |
| lpfc_sli_hbq_count(void) |
| { |
| return ARRAY_SIZE(lpfc_hbq_defs); |
| } |
| |
| /** |
| * lpfc_sli_hbq_entry_count - Calculate total number of hbq entries |
| * |
| * This function adds the number of hbq entries in every HBQ to get |
| * the total number of hbq entries required for the HBA and returns |
| * the total count. |
| **/ |
| static int |
| lpfc_sli_hbq_entry_count(void) |
| { |
| int hbq_count = lpfc_sli_hbq_count(); |
| int count = 0; |
| int i; |
| |
| for (i = 0; i < hbq_count; ++i) |
| count += lpfc_hbq_defs[i]->entry_count; |
| return count; |
| } |
| |
| /** |
| * lpfc_sli_hbq_size - Calculate memory required for all hbq entries |
| * |
| * This function calculates amount of memory required for all hbq entries |
| * to be configured and returns the total memory required. |
| **/ |
| int |
| lpfc_sli_hbq_size(void) |
| { |
| return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry); |
| } |
| |
| /** |
| * lpfc_sli_hbq_setup - configure and initialize HBQs |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called during the SLI initialization to configure |
| * all the HBQs and post buffers to the HBQ. The caller is not |
| * required to hold any locks. This function will return zero if successful |
| * else it will return negative error code. |
| **/ |
| static int |
| lpfc_sli_hbq_setup(struct lpfc_hba *phba) |
| { |
| int hbq_count = lpfc_sli_hbq_count(); |
| LPFC_MBOXQ_t *pmb; |
| MAILBOX_t *pmbox; |
| uint32_t hbqno; |
| uint32_t hbq_entry_index; |
| |
| /* Get a Mailbox buffer to setup mailbox |
| * commands for HBA initialization |
| */ |
| pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| |
| if (!pmb) |
| return -ENOMEM; |
| |
| pmbox = &pmb->u.mb; |
| |
| /* Initialize the struct lpfc_sli_hbq structure for each hbq */ |
| phba->link_state = LPFC_INIT_MBX_CMDS; |
| phba->hbq_in_use = 1; |
| |
| hbq_entry_index = 0; |
| for (hbqno = 0; hbqno < hbq_count; ++hbqno) { |
| phba->hbqs[hbqno].next_hbqPutIdx = 0; |
| phba->hbqs[hbqno].hbqPutIdx = 0; |
| phba->hbqs[hbqno].local_hbqGetIdx = 0; |
| phba->hbqs[hbqno].entry_count = |
| lpfc_hbq_defs[hbqno]->entry_count; |
| lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno], |
| hbq_entry_index, pmb); |
| hbq_entry_index += phba->hbqs[hbqno].entry_count; |
| |
| if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) { |
| /* Adapter failed to init, mbxCmd <cmd> CFG_RING, |
| mbxStatus <status>, ring <num> */ |
| |
| lpfc_printf_log(phba, KERN_ERR, |
| LOG_SLI | LOG_VPORT, |
| "1805 Adapter failed to init. " |
| "Data: x%x x%x x%x\n", |
| pmbox->mbxCommand, |
| pmbox->mbxStatus, hbqno); |
| |
| phba->link_state = LPFC_HBA_ERROR; |
| mempool_free(pmb, phba->mbox_mem_pool); |
| return ENXIO; |
| } |
| } |
| phba->hbq_count = hbq_count; |
| |
| mempool_free(pmb, phba->mbox_mem_pool); |
| |
| /* Initially populate or replenish the HBQs */ |
| for (hbqno = 0; hbqno < hbq_count; ++hbqno) |
| lpfc_sli_hbqbuf_init_hbqs(phba, hbqno); |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli4_rb_setup - Initialize and post RBs to HBA |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called during the SLI initialization to configure |
| * all the HBQs and post buffers to the HBQ. The caller is not |
| * required to hold any locks. This function will return zero if successful |
| * else it will return negative error code. |
| **/ |
| static int |
| lpfc_sli4_rb_setup(struct lpfc_hba *phba) |
| { |
| phba->hbq_in_use = 1; |
| phba->hbqs[0].entry_count = lpfc_hbq_defs[0]->entry_count; |
| phba->hbq_count = 1; |
| /* Initially populate or replenish the HBQs */ |
| lpfc_sli_hbqbuf_init_hbqs(phba, 0); |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_config_port - Issue config port mailbox command |
| * @phba: Pointer to HBA context object. |
| * @sli_mode: sli mode - 2/3 |
| * |
| * This function is called by the sli intialization code path |
| * to issue config_port mailbox command. This function restarts the |
| * HBA firmware and issues a config_port mailbox command to configure |
| * the SLI interface in the sli mode specified by sli_mode |
| * variable. The caller is not required to hold any locks. |
| * The function returns 0 if successful, else returns negative error |
| * code. |
| **/ |
| int |
| lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode) |
| { |
| LPFC_MBOXQ_t *pmb; |
| uint32_t resetcount = 0, rc = 0, done = 0; |
| |
| pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!pmb) { |
| phba->link_state = LPFC_HBA_ERROR; |
| return -ENOMEM; |
| } |
| |
| phba->sli_rev = sli_mode; |
| while (resetcount < 2 && !done) { |
| spin_lock_irq(&phba->hbalock); |
| phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE; |
| spin_unlock_irq(&phba->hbalock); |
| phba->pport->port_state = LPFC_VPORT_UNKNOWN; |
| lpfc_sli_brdrestart(phba); |
| rc = lpfc_sli_chipset_init(phba); |
| if (rc) |
| break; |
| |
| spin_lock_irq(&phba->hbalock); |
| phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| spin_unlock_irq(&phba->hbalock); |
| resetcount++; |
| |
| /* Call pre CONFIG_PORT mailbox command initialization. A |
| * value of 0 means the call was successful. Any other |
| * nonzero value is a failure, but if ERESTART is returned, |
| * the driver may reset the HBA and try again. |
| */ |
| rc = lpfc_config_port_prep(phba); |
| if (rc == -ERESTART) { |
| phba->link_state = LPFC_LINK_UNKNOWN; |
| continue; |
| } else if (rc) |
| break; |
| phba->link_state = LPFC_INIT_MBX_CMDS; |
| lpfc_config_port(phba, pmb); |
| rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); |
| phba->sli3_options &= ~(LPFC_SLI3_NPIV_ENABLED | |
| LPFC_SLI3_HBQ_ENABLED | |
| LPFC_SLI3_CRP_ENABLED | |
| LPFC_SLI3_INB_ENABLED | |
| LPFC_SLI3_BG_ENABLED); |
| if (rc != MBX_SUCCESS) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0442 Adapter failed to init, mbxCmd x%x " |
| "CONFIG_PORT, mbxStatus x%x Data: x%x\n", |
| pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus, 0); |
| spin_lock_irq(&phba->hbalock); |
| phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE; |
| spin_unlock_irq(&phba->hbalock); |
| rc = -ENXIO; |
| } else { |
| /* Allow asynchronous mailbox command to go through */ |
| spin_lock_irq(&phba->hbalock); |
| phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; |
| spin_unlock_irq(&phba->hbalock); |
| done = 1; |
| } |
| } |
| if (!done) { |
| rc = -EINVAL; |
| goto do_prep_failed; |
| } |
| if (pmb->u.mb.un.varCfgPort.sli_mode == 3) { |
| if (!pmb->u.mb.un.varCfgPort.cMA) { |
| rc = -ENXIO; |
| goto do_prep_failed; |
| } |
| if (phba->max_vpi && pmb->u.mb.un.varCfgPort.gmv) { |
| phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; |
| phba->max_vpi = pmb->u.mb.un.varCfgPort.max_vpi; |
| phba->max_vports = (phba->max_vpi > phba->max_vports) ? |
| phba->max_vpi : phba->max_vports; |
| |
| } else |
| phba->max_vpi = 0; |
| if (pmb->u.mb.un.varCfgPort.gdss) |
| phba->sli3_options |= LPFC_SLI3_DSS_ENABLED; |
| if (pmb->u.mb.un.varCfgPort.gerbm) |
| phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED; |
| if (pmb->u.mb.un.varCfgPort.gcrp) |
| phba->sli3_options |= LPFC_SLI3_CRP_ENABLED; |
| if (pmb->u.mb.un.varCfgPort.ginb) { |
| phba->sli3_options |= LPFC_SLI3_INB_ENABLED; |
| phba->hbq_get = phba->mbox->us.s3_inb_pgp.hbq_get; |
| phba->port_gp = phba->mbox->us.s3_inb_pgp.port; |
| phba->inb_ha_copy = &phba->mbox->us.s3_inb_pgp.ha_copy; |
| phba->inb_counter = &phba->mbox->us.s3_inb_pgp.counter; |
| phba->inb_last_counter = |
| phba->mbox->us.s3_inb_pgp.counter; |
| } else { |
| phba->hbq_get = phba->mbox->us.s3_pgp.hbq_get; |
| phba->port_gp = phba->mbox->us.s3_pgp.port; |
| phba->inb_ha_copy = NULL; |
| phba->inb_counter = NULL; |
| } |
| |
| if (phba->cfg_enable_bg) { |
| if (pmb->u.mb.un.varCfgPort.gbg) |
| phba->sli3_options |= LPFC_SLI3_BG_ENABLED; |
| else |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0443 Adapter did not grant " |
| "BlockGuard\n"); |
| } |
| } else { |
| phba->hbq_get = NULL; |
| phba->port_gp = phba->mbox->us.s2.port; |
| phba->inb_ha_copy = NULL; |
| phba->inb_counter = NULL; |
| phba->max_vpi = 0; |
| } |
| do_prep_failed: |
| mempool_free(pmb, phba->mbox_mem_pool); |
| return rc; |
| } |
| |
| |
| /** |
| * lpfc_sli_hba_setup - SLI intialization function |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is the main SLI intialization function. This function |
| * is called by the HBA intialization code, HBA reset code and HBA |
| * error attention handler code. Caller is not required to hold any |
| * locks. This function issues config_port mailbox command to configure |
| * the SLI, setup iocb rings and HBQ rings. In the end the function |
| * calls the config_port_post function to issue init_link mailbox |
| * command and to start the discovery. The function will return zero |
| * if successful, else it will return negative error code. |
| **/ |
| int |
| lpfc_sli_hba_setup(struct lpfc_hba *phba) |
| { |
| uint32_t rc; |
| int mode = 3; |
| |
| switch (lpfc_sli_mode) { |
| case 2: |
| if (phba->cfg_enable_npiv) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT, |
| "1824 NPIV enabled: Override lpfc_sli_mode " |
| "parameter (%d) to auto (0).\n", |
| lpfc_sli_mode); |
| break; |
| } |
| mode = 2; |
| break; |
| case 0: |
| case 3: |
| break; |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT, |
| "1819 Unrecognized lpfc_sli_mode " |
| "parameter: %d.\n", lpfc_sli_mode); |
| |
| break; |
| } |
| |
| rc = lpfc_sli_config_port(phba, mode); |
| |
| if (rc && lpfc_sli_mode == 3) |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT, |
| "1820 Unable to select SLI-3. " |
| "Not supported by adapter.\n"); |
| if (rc && mode != 2) |
| rc = lpfc_sli_config_port(phba, 2); |
| if (rc) |
| goto lpfc_sli_hba_setup_error; |
| |
| /* Enable PCIe device Advanced Error Reporting (AER) if configured */ |
| if (phba->cfg_aer_support == 1 && !(phba->hba_flag & HBA_AER_ENABLED)) { |
| rc = pci_enable_pcie_error_reporting(phba->pcidev); |
| if (!rc) { |
| lpfc_printf_log(phba, KERN_INFO, LOG_INIT, |
| "2709 This device supports " |
| "Advanced Error Reporting (AER)\n"); |
| spin_lock_irq(&phba->hbalock); |
| phba->hba_flag |= HBA_AER_ENABLED; |
| spin_unlock_irq(&phba->hbalock); |
| } else { |
| lpfc_printf_log(phba, KERN_INFO, LOG_INIT, |
| "2708 This device does not support " |
| "Advanced Error Reporting (AER)\n"); |
| phba->cfg_aer_support = 0; |
| } |
| } |
| |
| if (phba->sli_rev == 3) { |
| phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE; |
| phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE; |
| } else { |
| phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE; |
| phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE; |
| phba->sli3_options = 0; |
| } |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_INIT, |
| "0444 Firmware in SLI %x mode. Max_vpi %d\n", |
| phba->sli_rev, phba->max_vpi); |
| rc = lpfc_sli_ring_map(phba); |
| |
| if (rc) |
| goto lpfc_sli_hba_setup_error; |
| |
| /* Init HBQs */ |
| if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { |
| rc = lpfc_sli_hbq_setup(phba); |
| if (rc) |
| goto lpfc_sli_hba_setup_error; |
| } |
| spin_lock_irq(&phba->hbalock); |
| phba->sli.sli_flag |= LPFC_PROCESS_LA; |
| spin_unlock_irq(&phba->hbalock); |
| |
| rc = lpfc_config_port_post(phba); |
| if (rc) |
| goto lpfc_sli_hba_setup_error; |
| |
| return rc; |
| |
| lpfc_sli_hba_setup_error: |
| phba->link_state = LPFC_HBA_ERROR; |
| lpfc_printf_log(phba, KERN_INFO, LOG_INIT, |
| "0445 Firmware initialization failed\n"); |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli4_read_fcoe_params - Read fcoe params from conf region |
| * @phba: Pointer to HBA context object. |
| * @mboxq: mailbox pointer. |
| * This function issue a dump mailbox command to read config region |
| * 23 and parse the records in the region and populate driver |
| * data structure. |
| **/ |
| static int |
| lpfc_sli4_read_fcoe_params(struct lpfc_hba *phba, |
| LPFC_MBOXQ_t *mboxq) |
| { |
| struct lpfc_dmabuf *mp; |
| struct lpfc_mqe *mqe; |
| uint32_t data_length; |
| int rc; |
| |
| /* Program the default value of vlan_id and fc_map */ |
| phba->valid_vlan = 0; |
| phba->fc_map[0] = LPFC_FCOE_FCF_MAP0; |
| phba->fc_map[1] = LPFC_FCOE_FCF_MAP1; |
| phba->fc_map[2] = LPFC_FCOE_FCF_MAP2; |
| |
| mqe = &mboxq->u.mqe; |
| if (lpfc_dump_fcoe_param(phba, mboxq)) |
| return -ENOMEM; |
| |
| mp = (struct lpfc_dmabuf *) mboxq->context1; |
| rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, |
| "(%d):2571 Mailbox cmd x%x Status x%x " |
| "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x " |
| "x%x x%x x%x x%x x%x x%x x%x x%x x%x " |
| "CQ: x%x x%x x%x x%x\n", |
| mboxq->vport ? mboxq->vport->vpi : 0, |
| bf_get(lpfc_mqe_command, mqe), |
| bf_get(lpfc_mqe_status, mqe), |
| mqe->un.mb_words[0], mqe->un.mb_words[1], |
| mqe->un.mb_words[2], mqe->un.mb_words[3], |
| mqe->un.mb_words[4], mqe->un.mb_words[5], |
| mqe->un.mb_words[6], mqe->un.mb_words[7], |
| mqe->un.mb_words[8], mqe->un.mb_words[9], |
| mqe->un.mb_words[10], mqe->un.mb_words[11], |
| mqe->un.mb_words[12], mqe->un.mb_words[13], |
| mqe->un.mb_words[14], mqe->un.mb_words[15], |
| mqe->un.mb_words[16], mqe->un.mb_words[50], |
| mboxq->mcqe.word0, |
| mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1, |
| mboxq->mcqe.trailer); |
| |
| if (rc) { |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| return -EIO; |
| } |
| data_length = mqe->un.mb_words[5]; |
| if (data_length > DMP_RGN23_SIZE) { |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| return -EIO; |
| } |
| |
| lpfc_parse_fcoe_conf(phba, mp->virt, data_length); |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli4_read_rev - Issue READ_REV and collect vpd data |
| * @phba: pointer to lpfc hba data structure. |
| * @mboxq: pointer to the LPFC_MBOXQ_t structure. |
| * @vpd: pointer to the memory to hold resulting port vpd data. |
| * @vpd_size: On input, the number of bytes allocated to @vpd. |
| * On output, the number of data bytes in @vpd. |
| * |
| * This routine executes a READ_REV SLI4 mailbox command. In |
| * addition, this routine gets the port vpd data. |
| * |
| * Return codes |
| * 0 - successful |
| * ENOMEM - could not allocated memory. |
| **/ |
| static int |
| lpfc_sli4_read_rev(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, |
| uint8_t *vpd, uint32_t *vpd_size) |
| { |
| int rc = 0; |
| uint32_t dma_size; |
| struct lpfc_dmabuf *dmabuf; |
| struct lpfc_mqe *mqe; |
| |
| dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); |
| if (!dmabuf) |
| return -ENOMEM; |
| |
| /* |
| * Get a DMA buffer for the vpd data resulting from the READ_REV |
| * mailbox command. |
| */ |
| dma_size = *vpd_size; |
| dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, |
| dma_size, |
| &dmabuf->phys, |
| GFP_KERNEL); |
| if (!dmabuf->virt) { |
| kfree(dmabuf); |
| return -ENOMEM; |
| } |
| memset(dmabuf->virt, 0, dma_size); |
| |
| /* |
| * The SLI4 implementation of READ_REV conflicts at word1, |
| * bits 31:16 and SLI4 adds vpd functionality not present |
| * in SLI3. This code corrects the conflicts. |
| */ |
| lpfc_read_rev(phba, mboxq); |
| mqe = &mboxq->u.mqe; |
| mqe->un.read_rev.vpd_paddr_high = putPaddrHigh(dmabuf->phys); |
| mqe->un.read_rev.vpd_paddr_low = putPaddrLow(dmabuf->phys); |
| mqe->un.read_rev.word1 &= 0x0000FFFF; |
| bf_set(lpfc_mbx_rd_rev_vpd, &mqe->un.read_rev, 1); |
| bf_set(lpfc_mbx_rd_rev_avail_len, &mqe->un.read_rev, dma_size); |
| |
| rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); |
| if (rc) { |
| dma_free_coherent(&phba->pcidev->dev, dma_size, |
| dmabuf->virt, dmabuf->phys); |
| kfree(dmabuf); |
| return -EIO; |
| } |
| |
| /* |
| * The available vpd length cannot be bigger than the |
| * DMA buffer passed to the port. Catch the less than |
| * case and update the caller's size. |
| */ |
| if (mqe->un.read_rev.avail_vpd_len < *vpd_size) |
| *vpd_size = mqe->un.read_rev.avail_vpd_len; |
| |
| lpfc_sli_pcimem_bcopy(dmabuf->virt, vpd, *vpd_size); |
| dma_free_coherent(&phba->pcidev->dev, dma_size, |
| dmabuf->virt, dmabuf->phys); |
| kfree(dmabuf); |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli4_arm_cqeq_intr - Arm sli-4 device completion and event queues |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This routine is called to explicitly arm the SLI4 device's completion and |
| * event queues |
| **/ |
| static void |
| lpfc_sli4_arm_cqeq_intr(struct lpfc_hba *phba) |
| { |
| uint8_t fcp_eqidx; |
| |
| lpfc_sli4_cq_release(phba->sli4_hba.mbx_cq, LPFC_QUEUE_REARM); |
| lpfc_sli4_cq_release(phba->sli4_hba.els_cq, LPFC_QUEUE_REARM); |
| for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) |
| lpfc_sli4_cq_release(phba->sli4_hba.fcp_cq[fcp_eqidx], |
| LPFC_QUEUE_REARM); |
| lpfc_sli4_eq_release(phba->sli4_hba.sp_eq, LPFC_QUEUE_REARM); |
| for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) |
| lpfc_sli4_eq_release(phba->sli4_hba.fp_eq[fcp_eqidx], |
| LPFC_QUEUE_REARM); |
| } |
| |
| /** |
| * lpfc_sli4_hba_setup - SLI4 device intialization PCI function |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is the main SLI4 device intialization PCI function. This |
| * function is called by the HBA intialization code, HBA reset code and |
| * HBA error attention handler code. Caller is not required to hold any |
| * locks. |
| **/ |
| int |
| lpfc_sli4_hba_setup(struct lpfc_hba *phba) |
| { |
| int rc; |
| LPFC_MBOXQ_t *mboxq; |
| struct lpfc_mqe *mqe; |
| uint8_t *vpd; |
| uint32_t vpd_size; |
| uint32_t ftr_rsp = 0; |
| struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); |
| struct lpfc_vport *vport = phba->pport; |
| struct lpfc_dmabuf *mp; |
| |
| /* Perform a PCI function reset to start from clean */ |
| rc = lpfc_pci_function_reset(phba); |
| if (unlikely(rc)) |
| return -ENODEV; |
| |
| /* Check the HBA Host Status Register for readyness */ |
| rc = lpfc_sli4_post_status_check(phba); |
| if (unlikely(rc)) |
| return -ENODEV; |
| else { |
| spin_lock_irq(&phba->hbalock); |
| phba->sli.sli_flag |= LPFC_SLI_ACTIVE; |
| spin_unlock_irq(&phba->hbalock); |
| } |
| |
| /* |
| * Allocate a single mailbox container for initializing the |
| * port. |
| */ |
| mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mboxq) |
| return -ENOMEM; |
| |
| /* |
| * Continue initialization with default values even if driver failed |
| * to read FCoE param config regions |
| */ |
| if (lpfc_sli4_read_fcoe_params(phba, mboxq)) |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT, |
| "2570 Failed to read FCoE parameters\n"); |
| |
| /* Issue READ_REV to collect vpd and FW information. */ |
| vpd_size = PAGE_SIZE; |
| vpd = kzalloc(vpd_size, GFP_KERNEL); |
| if (!vpd) { |
| rc = -ENOMEM; |
| goto out_free_mbox; |
| } |
| |
| rc = lpfc_sli4_read_rev(phba, mboxq, vpd, &vpd_size); |
| if (unlikely(rc)) |
| goto out_free_vpd; |
| |
| mqe = &mboxq->u.mqe; |
| phba->sli_rev = bf_get(lpfc_mbx_rd_rev_sli_lvl, &mqe->un.read_rev); |
| if (bf_get(lpfc_mbx_rd_rev_fcoe, &mqe->un.read_rev)) |
| phba->hba_flag |= HBA_FCOE_SUPPORT; |
| |
| if (bf_get(lpfc_mbx_rd_rev_cee_ver, &mqe->un.read_rev) == |
| LPFC_DCBX_CEE_MODE) |
| phba->hba_flag |= HBA_FIP_SUPPORT; |
| else |
| phba->hba_flag &= ~HBA_FIP_SUPPORT; |
| |
| if (phba->sli_rev != LPFC_SLI_REV4 || |
| !(phba->hba_flag & HBA_FCOE_SUPPORT)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "0376 READ_REV Error. SLI Level %d " |
| "FCoE enabled %d\n", |
| phba->sli_rev, phba->hba_flag & HBA_FCOE_SUPPORT); |
| rc = -EIO; |
| goto out_free_vpd; |
| } |
| /* |
| * Evaluate the read rev and vpd data. Populate the driver |
| * state with the results. If this routine fails, the failure |
| * is not fatal as the driver will use generic values. |
| */ |
| rc = lpfc_parse_vpd(phba, vpd, vpd_size); |
| if (unlikely(!rc)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "0377 Error %d parsing vpd. " |
| "Using defaults.\n", rc); |
| rc = 0; |
| } |
| |
| /* Save information as VPD data */ |
| phba->vpd.rev.biuRev = mqe->un.read_rev.first_hw_rev; |
| phba->vpd.rev.smRev = mqe->un.read_rev.second_hw_rev; |
| phba->vpd.rev.endecRev = mqe->un.read_rev.third_hw_rev; |
| phba->vpd.rev.fcphHigh = bf_get(lpfc_mbx_rd_rev_fcph_high, |
| &mqe->un.read_rev); |
| phba->vpd.rev.fcphLow = bf_get(lpfc_mbx_rd_rev_fcph_low, |
| &mqe->un.read_rev); |
| phba->vpd.rev.feaLevelHigh = bf_get(lpfc_mbx_rd_rev_ftr_lvl_high, |
| &mqe->un.read_rev); |
| phba->vpd.rev.feaLevelLow = bf_get(lpfc_mbx_rd_rev_ftr_lvl_low, |
| &mqe->un.read_rev); |
| phba->vpd.rev.sli1FwRev = mqe->un.read_rev.fw_id_rev; |
| memcpy(phba->vpd.rev.sli1FwName, mqe->un.read_rev.fw_name, 16); |
| phba->vpd.rev.sli2FwRev = mqe->un.read_rev.ulp_fw_id_rev; |
| memcpy(phba->vpd.rev.sli2FwName, mqe->un.read_rev.ulp_fw_name, 16); |
| phba->vpd.rev.opFwRev = mqe->un.read_rev.fw_id_rev; |
| memcpy(phba->vpd.rev.opFwName, mqe->un.read_rev.fw_name, 16); |
| lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, |
| "(%d):0380 READ_REV Status x%x " |
| "fw_rev:%s fcphHi:%x fcphLo:%x flHi:%x flLo:%x\n", |
| mboxq->vport ? mboxq->vport->vpi : 0, |
| bf_get(lpfc_mqe_status, mqe), |
| phba->vpd.rev.opFwName, |
| phba->vpd.rev.fcphHigh, phba->vpd.rev.fcphLow, |
| phba->vpd.rev.feaLevelHigh, phba->vpd.rev.feaLevelLow); |
| |
| /* |
| * Discover the port's supported feature set and match it against the |
| * hosts requests. |
| */ |
| lpfc_request_features(phba, mboxq); |
| rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); |
| if (unlikely(rc)) { |
| rc = -EIO; |
| goto out_free_vpd; |
| } |
| |
| /* |
| * The port must support FCP initiator mode as this is the |
| * only mode running in the host. |
| */ |
| if (!(bf_get(lpfc_mbx_rq_ftr_rsp_fcpi, &mqe->un.req_ftrs))) { |
| lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, |
| "0378 No support for fcpi mode.\n"); |
| ftr_rsp++; |
| } |
| |
| /* |
| * If the port cannot support the host's requested features |
| * then turn off the global config parameters to disable the |
| * feature in the driver. This is not a fatal error. |
| */ |
| if ((phba->cfg_enable_bg) && |
| !(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs))) |
| ftr_rsp++; |
| |
| if (phba->max_vpi && phba->cfg_enable_npiv && |
| !(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs))) |
| ftr_rsp++; |
| |
| if (ftr_rsp) { |
| lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, |
| "0379 Feature Mismatch Data: x%08x %08x " |
| "x%x x%x x%x\n", mqe->un.req_ftrs.word2, |
| mqe->un.req_ftrs.word3, phba->cfg_enable_bg, |
| phba->cfg_enable_npiv, phba->max_vpi); |
| if (!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs))) |
| phba->cfg_enable_bg = 0; |
| if (!(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs))) |
| phba->cfg_enable_npiv = 0; |
| } |
| |
| /* These SLI3 features are assumed in SLI4 */ |
| spin_lock_irq(&phba->hbalock); |
| phba->sli3_options |= (LPFC_SLI3_NPIV_ENABLED | LPFC_SLI3_HBQ_ENABLED); |
| spin_unlock_irq(&phba->hbalock); |
| |
| /* Read the port's service parameters. */ |
| lpfc_read_sparam(phba, mboxq, vport->vpi); |
| mboxq->vport = vport; |
| rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); |
| mp = (struct lpfc_dmabuf *) mboxq->context1; |
| if (rc == MBX_SUCCESS) { |
| memcpy(&vport->fc_sparam, mp->virt, sizeof(struct serv_parm)); |
| rc = 0; |
| } |
| |
| /* |
| * This memory was allocated by the lpfc_read_sparam routine. Release |
| * it to the mbuf pool. |
| */ |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| mboxq->context1 = NULL; |
| if (unlikely(rc)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "0382 READ_SPARAM command failed " |
| "status %d, mbxStatus x%x\n", |
| rc, bf_get(lpfc_mqe_status, mqe)); |
| phba->link_state = LPFC_HBA_ERROR; |
| rc = -EIO; |
| goto out_free_vpd; |
| } |
| |
| if (phba->cfg_soft_wwnn) |
| u64_to_wwn(phba->cfg_soft_wwnn, |
| vport->fc_sparam.nodeName.u.wwn); |
| if (phba->cfg_soft_wwpn) |
| u64_to_wwn(phba->cfg_soft_wwpn, |
| vport->fc_sparam.portName.u.wwn); |
| memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, |
| sizeof(struct lpfc_name)); |
| memcpy(&vport->fc_portname, &vport->fc_sparam.portName, |
| sizeof(struct lpfc_name)); |
| |
| /* Update the fc_host data structures with new wwn. */ |
| fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn); |
| fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); |
| |
| /* Register SGL pool to the device using non-embedded mailbox command */ |
| rc = lpfc_sli4_post_sgl_list(phba); |
| if (unlikely(rc)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "0582 Error %d during sgl post operation\n", |
| rc); |
| rc = -ENODEV; |
| goto out_free_vpd; |
| } |
| |
| /* Register SCSI SGL pool to the device */ |
| rc = lpfc_sli4_repost_scsi_sgl_list(phba); |
| if (unlikely(rc)) { |
| lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, |
| "0383 Error %d during scsi sgl post " |
| "operation\n", rc); |
| /* Some Scsi buffers were moved to the abort scsi list */ |
| /* A pci function reset will repost them */ |
| rc = -ENODEV; |
| goto out_free_vpd; |
| } |
| |
| /* Post the rpi header region to the device. */ |
| rc = lpfc_sli4_post_all_rpi_hdrs(phba); |
| if (unlikely(rc)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "0393 Error %d during rpi post operation\n", |
| rc); |
| rc = -ENODEV; |
| goto out_free_vpd; |
| } |
| |
| /* Set up all the queues to the device */ |
| rc = lpfc_sli4_queue_setup(phba); |
| if (unlikely(rc)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "0381 Error %d during queue setup.\n ", rc); |
| goto out_stop_timers; |
| } |
| |
| /* Arm the CQs and then EQs on device */ |
| lpfc_sli4_arm_cqeq_intr(phba); |
| |
| /* Indicate device interrupt mode */ |
| phba->sli4_hba.intr_enable = 1; |
| |
| /* Allow asynchronous mailbox command to go through */ |
| spin_lock_irq(&phba->hbalock); |
| phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; |
| spin_unlock_irq(&phba->hbalock); |
| |
| /* Post receive buffers to the device */ |
| lpfc_sli4_rb_setup(phba); |
| |
| /* Start the ELS watchdog timer */ |
| mod_timer(&vport->els_tmofunc, |
| jiffies + HZ * (phba->fc_ratov * 2)); |
| |
| /* Start heart beat timer */ |
| mod_timer(&phba->hb_tmofunc, |
| jiffies + HZ * LPFC_HB_MBOX_INTERVAL); |
| phba->hb_outstanding = 0; |
| phba->last_completion_time = jiffies; |
| |
| /* Start error attention (ERATT) polling timer */ |
| mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL); |
| |
| /* |
| * The port is ready, set the host's link state to LINK_DOWN |
| * in preparation for link interrupts. |
| */ |
| lpfc_init_link(phba, mboxq, phba->cfg_topology, phba->cfg_link_speed); |
| mboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| lpfc_set_loopback_flag(phba); |
| /* Change driver state to LPFC_LINK_DOWN right before init link */ |
| spin_lock_irq(&phba->hbalock); |
| phba->link_state = LPFC_LINK_DOWN; |
| spin_unlock_irq(&phba->hbalock); |
| rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); |
| if (unlikely(rc != MBX_NOT_FINISHED)) { |
| kfree(vpd); |
| return 0; |
| } else |
| rc = -EIO; |
| |
| /* Unset all the queues set up in this routine when error out */ |
| if (rc) |
| lpfc_sli4_queue_unset(phba); |
| |
| out_stop_timers: |
| if (rc) |
| lpfc_stop_hba_timers(phba); |
| out_free_vpd: |
| kfree(vpd); |
| out_free_mbox: |
| mempool_free(mboxq, phba->mbox_mem_pool); |
| return rc; |
| } |
| |
| /** |
| * lpfc_mbox_timeout - Timeout call back function for mbox timer |
| * @ptr: context object - pointer to hba structure. |
| * |
| * This is the callback function for mailbox timer. The mailbox |
| * timer is armed when a new mailbox command is issued and the timer |
| * is deleted when the mailbox complete. The function is called by |
| * the kernel timer code when a mailbox does not complete within |
| * expected time. This function wakes up the worker thread to |
| * process the mailbox timeout and returns. All the processing is |
| * done by the worker thread function lpfc_mbox_timeout_handler. |
| **/ |
| void |
| lpfc_mbox_timeout(unsigned long ptr) |
| { |
| struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
| unsigned long iflag; |
| uint32_t tmo_posted; |
| |
| spin_lock_irqsave(&phba->pport->work_port_lock, iflag); |
| tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO; |
| if (!tmo_posted) |
| phba->pport->work_port_events |= WORKER_MBOX_TMO; |
| spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag); |
| |
| if (!tmo_posted) |
| lpfc_worker_wake_up(phba); |
| return; |
| } |
| |
| |
| /** |
| * lpfc_mbox_timeout_handler - Worker thread function to handle mailbox timeout |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called from worker thread when a mailbox command times out. |
| * The caller is not required to hold any locks. This function will reset the |
| * HBA and recover all the pending commands. |
| **/ |
| void |
| lpfc_mbox_timeout_handler(struct lpfc_hba *phba) |
| { |
| LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active; |
| MAILBOX_t *mb = &pmbox->u.mb; |
| struct lpfc_sli *psli = &phba->sli; |
| struct lpfc_sli_ring *pring; |
| |
| /* Check the pmbox pointer first. There is a race condition |
| * between the mbox timeout handler getting executed in the |
| * worklist and the mailbox actually completing. When this |
| * race condition occurs, the mbox_active will be NULL. |
| */ |
| spin_lock_irq(&phba->hbalock); |
| if (pmbox == NULL) { |
| lpfc_printf_log(phba, KERN_WARNING, |
| LOG_MBOX | LOG_SLI, |
| "0353 Active Mailbox cleared - mailbox timeout " |
| "exiting\n"); |
| spin_unlock_irq(&phba->hbalock); |
| return; |
| } |
| |
| /* Mbox cmd <mbxCommand> timeout */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "0310 Mailbox command x%x timeout Data: x%x x%x x%p\n", |
| mb->mbxCommand, |
| phba->pport->port_state, |
| phba->sli.sli_flag, |
| phba->sli.mbox_active); |
| spin_unlock_irq(&phba->hbalock); |
| |
| /* Setting state unknown so lpfc_sli_abort_iocb_ring |
| * would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing |
| * it to fail all oustanding SCSI IO. |
| */ |
| spin_lock_irq(&phba->pport->work_port_lock); |
| phba->pport->work_port_events &= ~WORKER_MBOX_TMO; |
| spin_unlock_irq(&phba->pport->work_port_lock); |
| spin_lock_irq(&phba->hbalock); |
| phba->link_state = LPFC_LINK_UNKNOWN; |
| psli->sli_flag &= ~LPFC_SLI_ACTIVE; |
| spin_unlock_irq(&phba->hbalock); |
| |
| pring = &psli->ring[psli->fcp_ring]; |
| lpfc_sli_abort_iocb_ring(phba, pring); |
| |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "0345 Resetting board due to mailbox timeout\n"); |
| |
| /* Reset the HBA device */ |
| lpfc_reset_hba(phba); |
| } |
| |
| /** |
| * lpfc_sli_issue_mbox_s3 - Issue an SLI3 mailbox command to firmware |
| * @phba: Pointer to HBA context object. |
| * @pmbox: Pointer to mailbox object. |
| * @flag: Flag indicating how the mailbox need to be processed. |
| * |
| * This function is called by discovery code and HBA management code |
| * to submit a mailbox command to firmware with SLI-3 interface spec. This |
| * function gets the hbalock to protect the data structures. |
| * The mailbox command can be submitted in polling mode, in which case |
| * this function will wait in a polling loop for the completion of the |
| * mailbox. |
| * If the mailbox is submitted in no_wait mode (not polling) the |
| * function will submit the command and returns immediately without waiting |
| * for the mailbox completion. The no_wait is supported only when HBA |
| * is in SLI2/SLI3 mode - interrupts are enabled. |
| * The SLI interface allows only one mailbox pending at a time. If the |
| * mailbox is issued in polling mode and there is already a mailbox |
| * pending, then the function will return an error. If the mailbox is issued |
| * in NO_WAIT mode and there is a mailbox pending already, the function |
| * will return MBX_BUSY after queuing the mailbox into mailbox queue. |
| * The sli layer owns the mailbox object until the completion of mailbox |
| * command if this function return MBX_BUSY or MBX_SUCCESS. For all other |
| * return codes the caller owns the mailbox command after the return of |
| * the function. |
| **/ |
| static int |
| lpfc_sli_issue_mbox_s3(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, |
| uint32_t flag) |
| { |
| MAILBOX_t *mb; |
| struct lpfc_sli *psli = &phba->sli; |
| uint32_t status, evtctr; |
| uint32_t ha_copy; |
| int i; |
| unsigned long timeout; |
| unsigned long drvr_flag = 0; |
| uint32_t word0, ldata; |
| void __iomem *to_slim; |
| int processing_queue = 0; |
| |
| spin_lock_irqsave(&phba->hbalock, drvr_flag); |
| if (!pmbox) { |
| phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| /* processing mbox queue from intr_handler */ |
| if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) { |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| return MBX_SUCCESS; |
| } |
| processing_queue = 1; |
| pmbox = lpfc_mbox_get(phba); |
| if (!pmbox) { |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| return MBX_SUCCESS; |
| } |
| } |
| |
| if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl && |
| pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) { |
| if(!pmbox->vport) { |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| lpfc_printf_log(phba, KERN_ERR, |
| LOG_MBOX | LOG_VPORT, |
| "1806 Mbox x%x failed. No vport\n", |
| pmbox->u.mb.mbxCommand); |
| dump_stack(); |
| goto out_not_finished; |
| } |
| } |
| |
| /* If the PCI channel is in offline state, do not post mbox. */ |
| if (unlikely(pci_channel_offline(phba->pcidev))) { |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| goto out_not_finished; |
| } |
| |
| /* If HBA has a deferred error attention, fail the iocb. */ |
| if (unlikely(phba->hba_flag & DEFER_ERATT)) { |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| goto out_not_finished; |
| } |
| |
| psli = &phba->sli; |
| |
| mb = &pmbox->u.mb; |
| status = MBX_SUCCESS; |
| |
| if (phba->link_state == LPFC_HBA_ERROR) { |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| |
| /* Mbox command <mbxCommand> cannot issue */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):0311 Mailbox command x%x cannot " |
| "issue Data: x%x x%x\n", |
| pmbox->vport ? pmbox->vport->vpi : 0, |
| pmbox->u.mb.mbxCommand, psli->sli_flag, flag); |
| goto out_not_finished; |
| } |
| |
| if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT && |
| !(readl(phba->HCregaddr) & HC_MBINT_ENA)) { |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):2528 Mailbox command x%x cannot " |
| "issue Data: x%x x%x\n", |
| pmbox->vport ? pmbox->vport->vpi : 0, |
| pmbox->u.mb.mbxCommand, psli->sli_flag, flag); |
| goto out_not_finished; |
| } |
| |
| if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) { |
| /* Polling for a mbox command when another one is already active |
| * is not allowed in SLI. Also, the driver must have established |
| * SLI2 mode to queue and process multiple mbox commands. |
| */ |
| |
| if (flag & MBX_POLL) { |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| |
| /* Mbox command <mbxCommand> cannot issue */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):2529 Mailbox command x%x " |
| "cannot issue Data: x%x x%x\n", |
| pmbox->vport ? pmbox->vport->vpi : 0, |
| pmbox->u.mb.mbxCommand, |
| psli->sli_flag, flag); |
| goto out_not_finished; |
| } |
| |
| if (!(psli->sli_flag & LPFC_SLI_ACTIVE)) { |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| /* Mbox command <mbxCommand> cannot issue */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):2530 Mailbox command x%x " |
| "cannot issue Data: x%x x%x\n", |
| pmbox->vport ? pmbox->vport->vpi : 0, |
| pmbox->u.mb.mbxCommand, |
| psli->sli_flag, flag); |
| goto out_not_finished; |
| } |
| |
| /* Another mailbox command is still being processed, queue this |
| * command to be processed later. |
| */ |
| lpfc_mbox_put(phba, pmbox); |
| |
| /* Mbox cmd issue - BUSY */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, |
| "(%d):0308 Mbox cmd issue - BUSY Data: " |
| "x%x x%x x%x x%x\n", |
| pmbox->vport ? pmbox->vport->vpi : 0xffffff, |
| mb->mbxCommand, phba->pport->port_state, |
| psli->sli_flag, flag); |
| |
| psli->slistat.mbox_busy++; |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| |
| if (pmbox->vport) { |
| lpfc_debugfs_disc_trc(pmbox->vport, |
| LPFC_DISC_TRC_MBOX_VPORT, |
| "MBOX Bsy vport: cmd:x%x mb:x%x x%x", |
| (uint32_t)mb->mbxCommand, |
| mb->un.varWords[0], mb->un.varWords[1]); |
| } |
| else { |
| lpfc_debugfs_disc_trc(phba->pport, |
| LPFC_DISC_TRC_MBOX, |
| "MBOX Bsy: cmd:x%x mb:x%x x%x", |
| (uint32_t)mb->mbxCommand, |
| mb->un.varWords[0], mb->un.varWords[1]); |
| } |
| |
| return MBX_BUSY; |
| } |
| |
| psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE; |
| |
| /* If we are not polling, we MUST be in SLI2 mode */ |
| if (flag != MBX_POLL) { |
| if (!(psli->sli_flag & LPFC_SLI_ACTIVE) && |
| (mb->mbxCommand != MBX_KILL_BOARD)) { |
| psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| /* Mbox command <mbxCommand> cannot issue */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):2531 Mailbox command x%x " |
| "cannot issue Data: x%x x%x\n", |
| pmbox->vport ? pmbox->vport->vpi : 0, |
| pmbox->u.mb.mbxCommand, |
| psli->sli_flag, flag); |
| goto out_not_finished; |
| } |
| /* timeout active mbox command */ |
| mod_timer(&psli->mbox_tmo, (jiffies + |
| (HZ * lpfc_mbox_tmo_val(phba, mb->mbxCommand)))); |
| } |
| |
| /* Mailbox cmd <cmd> issue */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, |
| "(%d):0309 Mailbox cmd x%x issue Data: x%x x%x " |
| "x%x\n", |
| pmbox->vport ? pmbox->vport->vpi : 0, |
| mb->mbxCommand, phba->pport->port_state, |
| psli->sli_flag, flag); |
| |
| if (mb->mbxCommand != MBX_HEARTBEAT) { |
| if (pmbox->vport) { |
| lpfc_debugfs_disc_trc(pmbox->vport, |
| LPFC_DISC_TRC_MBOX_VPORT, |
| "MBOX Send vport: cmd:x%x mb:x%x x%x", |
| (uint32_t)mb->mbxCommand, |
| mb->un.varWords[0], mb->un.varWords[1]); |
| } |
| else { |
| lpfc_debugfs_disc_trc(phba->pport, |
| LPFC_DISC_TRC_MBOX, |
| "MBOX Send: cmd:x%x mb:x%x x%x", |
| (uint32_t)mb->mbxCommand, |
| mb->un.varWords[0], mb->un.varWords[1]); |
| } |
| } |
| |
| psli->slistat.mbox_cmd++; |
| evtctr = psli->slistat.mbox_event; |
| |
| /* next set own bit for the adapter and copy over command word */ |
| mb->mbxOwner = OWN_CHIP; |
| |
| if (psli->sli_flag & LPFC_SLI_ACTIVE) { |
| /* First copy command data to host SLIM area */ |
| lpfc_sli_pcimem_bcopy(mb, phba->mbox, MAILBOX_CMD_SIZE); |
| } else { |
| if (mb->mbxCommand == MBX_CONFIG_PORT) { |
| /* copy command data into host mbox for cmpl */ |
| lpfc_sli_pcimem_bcopy(mb, phba->mbox, MAILBOX_CMD_SIZE); |
| } |
| |
| /* First copy mbox command data to HBA SLIM, skip past first |
| word */ |
| to_slim = phba->MBslimaddr + sizeof (uint32_t); |
| lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0], |
| MAILBOX_CMD_SIZE - sizeof (uint32_t)); |
| |
| /* Next copy over first word, with mbxOwner set */ |
| ldata = *((uint32_t *)mb); |
| to_slim = phba->MBslimaddr; |
| writel(ldata, to_slim); |
| readl(to_slim); /* flush */ |
| |
| if (mb->mbxCommand == MBX_CONFIG_PORT) { |
| /* switch over to host mailbox */ |
| psli->sli_flag |= LPFC_SLI_ACTIVE; |
| } |
| } |
| |
| wmb(); |
| |
| switch (flag) { |
| case MBX_NOWAIT: |
| /* Set up reference to mailbox command */ |
| psli->mbox_active = pmbox; |
| /* Interrupt board to do it */ |
| writel(CA_MBATT, phba->CAregaddr); |
| readl(phba->CAregaddr); /* flush */ |
| /* Don't wait for it to finish, just return */ |
| break; |
| |
| case MBX_POLL: |
| /* Set up null reference to mailbox command */ |
| psli->mbox_active = NULL; |
| /* Interrupt board to do it */ |
| writel(CA_MBATT, phba->CAregaddr); |
| readl(phba->CAregaddr); /* flush */ |
| |
| if (psli->sli_flag & LPFC_SLI_ACTIVE) { |
| /* First read mbox status word */ |
| word0 = *((uint32_t *)phba->mbox); |
| word0 = le32_to_cpu(word0); |
| } else { |
| /* First read mbox status word */ |
| word0 = readl(phba->MBslimaddr); |
| } |
| |
| /* Read the HBA Host Attention Register */ |
| ha_copy = readl(phba->HAregaddr); |
| timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, |
| mb->mbxCommand) * |
| 1000) + jiffies; |
| i = 0; |
| /* Wait for command to complete */ |
| while (((word0 & OWN_CHIP) == OWN_CHIP) || |
| (!(ha_copy & HA_MBATT) && |
| (phba->link_state > LPFC_WARM_START))) { |
| if (time_after(jiffies, timeout)) { |
| psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| spin_unlock_irqrestore(&phba->hbalock, |
| drvr_flag); |
| goto out_not_finished; |
| } |
| |
| /* Check if we took a mbox interrupt while we were |
| polling */ |
| if (((word0 & OWN_CHIP) != OWN_CHIP) |
| && (evtctr != psli->slistat.mbox_event)) |
| break; |
| |
| if (i++ > 10) { |
| spin_unlock_irqrestore(&phba->hbalock, |
| drvr_flag); |
| msleep(1); |
| spin_lock_irqsave(&phba->hbalock, drvr_flag); |
| } |
| |
| if (psli->sli_flag & LPFC_SLI_ACTIVE) { |
| /* First copy command data */ |
| word0 = *((uint32_t *)phba->mbox); |
| word0 = le32_to_cpu(word0); |
| if (mb->mbxCommand == MBX_CONFIG_PORT) { |
| MAILBOX_t *slimmb; |
| uint32_t slimword0; |
| /* Check real SLIM for any errors */ |
| slimword0 = readl(phba->MBslimaddr); |
| slimmb = (MAILBOX_t *) & slimword0; |
| if (((slimword0 & OWN_CHIP) != OWN_CHIP) |
| && slimmb->mbxStatus) { |
| psli->sli_flag &= |
| ~LPFC_SLI_ACTIVE; |
| word0 = slimword0; |
| } |
| } |
| } else { |
| /* First copy command data */ |
| word0 = readl(phba->MBslimaddr); |
| } |
| /* Read the HBA Host Attention Register */ |
| ha_copy = readl(phba->HAregaddr); |
| } |
| |
| if (psli->sli_flag & LPFC_SLI_ACTIVE) { |
| /* copy results back to user */ |
| lpfc_sli_pcimem_bcopy(phba->mbox, mb, MAILBOX_CMD_SIZE); |
| } else { |
| /* First copy command data */ |
| lpfc_memcpy_from_slim(mb, phba->MBslimaddr, |
| MAILBOX_CMD_SIZE); |
| if ((mb->mbxCommand == MBX_DUMP_MEMORY) && |
| pmbox->context2) { |
| lpfc_memcpy_from_slim((void *)pmbox->context2, |
| phba->MBslimaddr + DMP_RSP_OFFSET, |
| mb->un.varDmp.word_cnt); |
| } |
| } |
| |
| writel(HA_MBATT, phba->HAregaddr); |
| readl(phba->HAregaddr); /* flush */ |
| |
| psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| status = mb->mbxStatus; |
| } |
| |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| return status; |
| |
| out_not_finished: |
| if (processing_queue) { |
| pmbox->u.mb.mbxStatus = MBX_NOT_FINISHED; |
| lpfc_mbox_cmpl_put(phba, pmbox); |
| } |
| return MBX_NOT_FINISHED; |
| } |
| |
| /** |
| * lpfc_sli4_async_mbox_block - Block posting SLI4 asynchronous mailbox command |
| * @phba: Pointer to HBA context object. |
| * |
| * The function blocks the posting of SLI4 asynchronous mailbox commands from |
| * the driver internal pending mailbox queue. It will then try to wait out the |
| * possible outstanding mailbox command before return. |
| * |
| * Returns: |
| * 0 - the outstanding mailbox command completed; otherwise, the wait for |
| * the outstanding mailbox command timed out. |
| **/ |
| static int |
| lpfc_sli4_async_mbox_block(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli = &phba->sli; |
| uint8_t actcmd = MBX_HEARTBEAT; |
| int rc = 0; |
| unsigned long timeout; |
| |
| /* Mark the asynchronous mailbox command posting as blocked */ |
| spin_lock_irq(&phba->hbalock); |
| psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK; |
| if (phba->sli.mbox_active) |
| actcmd = phba->sli.mbox_active->u.mb.mbxCommand; |
| spin_unlock_irq(&phba->hbalock); |
| /* Determine how long we might wait for the active mailbox |
| * command to be gracefully completed by firmware. |
| */ |
| timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) * 1000) + |
| jiffies; |
| /* Wait for the outstnading mailbox command to complete */ |
| while (phba->sli.mbox_active) { |
| /* Check active mailbox complete status every 2ms */ |
| msleep(2); |
| if (time_after(jiffies, timeout)) { |
| /* Timeout, marked the outstanding cmd not complete */ |
| rc = 1; |
| break; |
| } |
| } |
| |
| /* Can not cleanly block async mailbox command, fails it */ |
| if (rc) { |
| spin_lock_irq(&phba->hbalock); |
| psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; |
| spin_unlock_irq(&phba->hbalock); |
| } |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli4_async_mbox_unblock - Block posting SLI4 async mailbox command |
| * @phba: Pointer to HBA context object. |
| * |
| * The function unblocks and resume posting of SLI4 asynchronous mailbox |
| * commands from the driver internal pending mailbox queue. It makes sure |
| * that there is no outstanding mailbox command before resuming posting |
| * asynchronous mailbox commands. If, for any reason, there is outstanding |
| * mailbox command, it will try to wait it out before resuming asynchronous |
| * mailbox command posting. |
| **/ |
| static void |
| lpfc_sli4_async_mbox_unblock(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli = &phba->sli; |
| |
| spin_lock_irq(&phba->hbalock); |
| if (!(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) { |
| /* Asynchronous mailbox posting is not blocked, do nothing */ |
| spin_unlock_irq(&phba->hbalock); |
| return; |
| } |
| |
| /* Outstanding synchronous mailbox command is guaranteed to be done, |
| * successful or timeout, after timing-out the outstanding mailbox |
| * command shall always be removed, so just unblock posting async |
| * mailbox command and resume |
| */ |
| psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; |
| spin_unlock_irq(&phba->hbalock); |
| |
| /* wake up worker thread to post asynchronlous mailbox command */ |
| lpfc_worker_wake_up(phba); |
| } |
| |
| /** |
| * lpfc_sli4_post_sync_mbox - Post an SLI4 mailbox to the bootstrap mailbox |
| * @phba: Pointer to HBA context object. |
| * @mboxq: Pointer to mailbox object. |
| * |
| * The function posts a mailbox to the port. The mailbox is expected |
| * to be comletely filled in and ready for the port to operate on it. |
| * This routine executes a synchronous completion operation on the |
| * mailbox by polling for its completion. |
| * |
| * The caller must not be holding any locks when calling this routine. |
| * |
| * Returns: |
| * MBX_SUCCESS - mailbox posted successfully |
| * Any of the MBX error values. |
| **/ |
| static int |
| lpfc_sli4_post_sync_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) |
| { |
| int rc = MBX_SUCCESS; |
| unsigned long iflag; |
| uint32_t db_ready; |
| uint32_t mcqe_status; |
| uint32_t mbx_cmnd; |
| unsigned long timeout; |
| struct lpfc_sli *psli = &phba->sli; |
| struct lpfc_mqe *mb = &mboxq->u.mqe; |
| struct lpfc_bmbx_create *mbox_rgn; |
| struct dma_address *dma_address; |
| struct lpfc_register bmbx_reg; |
| |
| /* |
| * Only one mailbox can be active to the bootstrap mailbox region |
| * at a time and there is no queueing provided. |
| */ |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) { |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):2532 Mailbox command x%x (x%x) " |
| "cannot issue Data: x%x x%x\n", |
| mboxq->vport ? mboxq->vport->vpi : 0, |
| mboxq->u.mb.mbxCommand, |
| lpfc_sli4_mbox_opcode_get(phba, mboxq), |
| psli->sli_flag, MBX_POLL); |
| return MBXERR_ERROR; |
| } |
| /* The server grabs the token and owns it until release */ |
| psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE; |
| phba->sli.mbox_active = mboxq; |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| |
| /* |
| * Initialize the bootstrap memory region to avoid stale data areas |
| * in the mailbox post. Then copy the caller's mailbox contents to |
| * the bmbx mailbox region. |
| */ |
| mbx_cmnd = bf_get(lpfc_mqe_command, mb); |
| memset(phba->sli4_hba.bmbx.avirt, 0, sizeof(struct lpfc_bmbx_create)); |
| lpfc_sli_pcimem_bcopy(mb, phba->sli4_hba.bmbx.avirt, |
| sizeof(struct lpfc_mqe)); |
| |
| /* Post the high mailbox dma address to the port and wait for ready. */ |
| dma_address = &phba->sli4_hba.bmbx.dma_address; |
| writel(dma_address->addr_hi, phba->sli4_hba.BMBXregaddr); |
| |
| timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mbx_cmnd) |
| * 1000) + jiffies; |
| do { |
| bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr); |
| db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg); |
| if (!db_ready) |
| msleep(2); |
| |
| if (time_after(jiffies, timeout)) { |
| rc = MBXERR_ERROR; |
| goto exit; |
| } |
| } while (!db_ready); |
| |
| /* Post the low mailbox dma address to the port. */ |
| writel(dma_address->addr_lo, phba->sli4_hba.BMBXregaddr); |
| timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mbx_cmnd) |
| * 1000) + jiffies; |
| do { |
| bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr); |
| db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg); |
| if (!db_ready) |
| msleep(2); |
| |
| if (time_after(jiffies, timeout)) { |
| rc = MBXERR_ERROR; |
| goto exit; |
| } |
| } while (!db_ready); |
| |
| /* |
| * Read the CQ to ensure the mailbox has completed. |
| * If so, update the mailbox status so that the upper layers |
| * can complete the request normally. |
| */ |
| lpfc_sli_pcimem_bcopy(phba->sli4_hba.bmbx.avirt, mb, |
| sizeof(struct lpfc_mqe)); |
| mbox_rgn = (struct lpfc_bmbx_create *) phba->sli4_hba.bmbx.avirt; |
| lpfc_sli_pcimem_bcopy(&mbox_rgn->mcqe, &mboxq->mcqe, |
| sizeof(struct lpfc_mcqe)); |
| mcqe_status = bf_get(lpfc_mcqe_status, &mbox_rgn->mcqe); |
| |
| /* Prefix the mailbox status with range x4000 to note SLI4 status. */ |
| if (mcqe_status != MB_CQE_STATUS_SUCCESS) { |
| bf_set(lpfc_mqe_status, mb, LPFC_MBX_ERROR_RANGE | mcqe_status); |
| rc = MBXERR_ERROR; |
| } |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, |
| "(%d):0356 Mailbox cmd x%x (x%x) Status x%x " |
| "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x" |
| " x%x x%x CQ: x%x x%x x%x x%x\n", |
| mboxq->vport ? mboxq->vport->vpi : 0, |
| mbx_cmnd, lpfc_sli4_mbox_opcode_get(phba, mboxq), |
| bf_get(lpfc_mqe_status, mb), |
| mb->un.mb_words[0], mb->un.mb_words[1], |
| mb->un.mb_words[2], mb->un.mb_words[3], |
| mb->un.mb_words[4], mb->un.mb_words[5], |
| mb->un.mb_words[6], mb->un.mb_words[7], |
| mb->un.mb_words[8], mb->un.mb_words[9], |
| mb->un.mb_words[10], mb->un.mb_words[11], |
| mb->un.mb_words[12], mboxq->mcqe.word0, |
| mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1, |
| mboxq->mcqe.trailer); |
| exit: |
| /* We are holding the token, no needed for lock when release */ |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| phba->sli.mbox_active = NULL; |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli_issue_mbox_s4 - Issue an SLI4 mailbox command to firmware |
| * @phba: Pointer to HBA context object. |
| * @pmbox: Pointer to mailbox object. |
| * @flag: Flag indicating how the mailbox need to be processed. |
| * |
| * This function is called by discovery code and HBA management code to submit |
| * a mailbox command to firmware with SLI-4 interface spec. |
| * |
| * Return codes the caller owns the mailbox command after the return of the |
| * function. |
| **/ |
| static int |
| lpfc_sli_issue_mbox_s4(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, |
| uint32_t flag) |
| { |
| struct lpfc_sli *psli = &phba->sli; |
| unsigned long iflags; |
| int rc; |
| |
| rc = lpfc_mbox_dev_check(phba); |
| if (unlikely(rc)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):2544 Mailbox command x%x (x%x) " |
| "cannot issue Data: x%x x%x\n", |
| mboxq->vport ? mboxq->vport->vpi : 0, |
| mboxq->u.mb.mbxCommand, |
| lpfc_sli4_mbox_opcode_get(phba, mboxq), |
| psli->sli_flag, flag); |
| goto out_not_finished; |
| } |
| |
| /* Detect polling mode and jump to a handler */ |
| if (!phba->sli4_hba.intr_enable) { |
| if (flag == MBX_POLL) |
| rc = lpfc_sli4_post_sync_mbox(phba, mboxq); |
| else |
| rc = -EIO; |
| if (rc != MBX_SUCCESS) |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):2541 Mailbox command x%x " |
| "(x%x) cannot issue Data: x%x x%x\n", |
| mboxq->vport ? mboxq->vport->vpi : 0, |
| mboxq->u.mb.mbxCommand, |
| lpfc_sli4_mbox_opcode_get(phba, mboxq), |
| psli->sli_flag, flag); |
| return rc; |
| } else if (flag == MBX_POLL) { |
| lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, |
| "(%d):2542 Try to issue mailbox command " |
| "x%x (x%x) synchronously ahead of async" |
| "mailbox command queue: x%x x%x\n", |
| mboxq->vport ? mboxq->vport->vpi : 0, |
| mboxq->u.mb.mbxCommand, |
| lpfc_sli4_mbox_opcode_get(phba, mboxq), |
| psli->sli_flag, flag); |
| /* Try to block the asynchronous mailbox posting */ |
| rc = lpfc_sli4_async_mbox_block(phba); |
| if (!rc) { |
| /* Successfully blocked, now issue sync mbox cmd */ |
| rc = lpfc_sli4_post_sync_mbox(phba, mboxq); |
| if (rc != MBX_SUCCESS) |
| lpfc_printf_log(phba, KERN_ERR, |
| LOG_MBOX | LOG_SLI, |
| "(%d):2597 Mailbox command " |
| "x%x (x%x) cannot issue " |
| "Data: x%x x%x\n", |
| mboxq->vport ? |
| mboxq->vport->vpi : 0, |
| mboxq->u.mb.mbxCommand, |
| lpfc_sli4_mbox_opcode_get(phba, |
| mboxq), |
| psli->sli_flag, flag); |
| /* Unblock the async mailbox posting afterward */ |
| lpfc_sli4_async_mbox_unblock(phba); |
| } |
| return rc; |
| } |
| |
| /* Now, interrupt mode asynchrous mailbox command */ |
| rc = lpfc_mbox_cmd_check(phba, mboxq); |
| if (rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):2543 Mailbox command x%x (x%x) " |
| "cannot issue Data: x%x x%x\n", |
| mboxq->vport ? mboxq->vport->vpi : 0, |
| mboxq->u.mb.mbxCommand, |
| lpfc_sli4_mbox_opcode_get(phba, mboxq), |
| psli->sli_flag, flag); |
| goto out_not_finished; |
| } |
| |
| /* Put the mailbox command to the driver internal FIFO */ |
| psli->slistat.mbox_busy++; |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| lpfc_mbox_put(phba, mboxq); |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, |
| "(%d):0354 Mbox cmd issue - Enqueue Data: " |
| "x%x (x%x) x%x x%x x%x\n", |
| mboxq->vport ? mboxq->vport->vpi : 0xffffff, |
| bf_get(lpfc_mqe_command, &mboxq->u.mqe), |
| lpfc_sli4_mbox_opcode_get(phba, mboxq), |
| phba->pport->port_state, |
| psli->sli_flag, MBX_NOWAIT); |
| /* Wake up worker thread to transport mailbox command from head */ |
| lpfc_worker_wake_up(phba); |
| |
| return MBX_BUSY; |
| |
| out_not_finished: |
| return MBX_NOT_FINISHED; |
| } |
| |
| /** |
| * lpfc_sli4_post_async_mbox - Post an SLI4 mailbox command to device |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called by worker thread to send a mailbox command to |
| * SLI4 HBA firmware. |
| * |
| **/ |
| int |
| lpfc_sli4_post_async_mbox(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli = &phba->sli; |
| LPFC_MBOXQ_t *mboxq; |
| int rc = MBX_SUCCESS; |
| unsigned long iflags; |
| struct lpfc_mqe *mqe; |
| uint32_t mbx_cmnd; |
| |
| /* Check interrupt mode before post async mailbox command */ |
| if (unlikely(!phba->sli4_hba.intr_enable)) |
| return MBX_NOT_FINISHED; |
| |
| /* Check for mailbox command service token */ |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) { |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| return MBX_NOT_FINISHED; |
| } |
| if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) { |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| return MBX_NOT_FINISHED; |
| } |
| if (unlikely(phba->sli.mbox_active)) { |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "0384 There is pending active mailbox cmd\n"); |
| return MBX_NOT_FINISHED; |
| } |
| /* Take the mailbox command service token */ |
| psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE; |
| |
| /* Get the next mailbox command from head of queue */ |
| mboxq = lpfc_mbox_get(phba); |
| |
| /* If no more mailbox command waiting for post, we're done */ |
| if (!mboxq) { |
| psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| return MBX_SUCCESS; |
| } |
| phba->sli.mbox_active = mboxq; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| |
| /* Check device readiness for posting mailbox command */ |
| rc = lpfc_mbox_dev_check(phba); |
| if (unlikely(rc)) |
| /* Driver clean routine will clean up pending mailbox */ |
| goto out_not_finished; |
| |
| /* Prepare the mbox command to be posted */ |
| mqe = &mboxq->u.mqe; |
| mbx_cmnd = bf_get(lpfc_mqe_command, mqe); |
| |
| /* Start timer for the mbox_tmo and log some mailbox post messages */ |
| mod_timer(&psli->mbox_tmo, (jiffies + |
| (HZ * lpfc_mbox_tmo_val(phba, mbx_cmnd)))); |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, |
| "(%d):0355 Mailbox cmd x%x (x%x) issue Data: " |
| "x%x x%x\n", |
| mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd, |
| lpfc_sli4_mbox_opcode_get(phba, mboxq), |
| phba->pport->port_state, psli->sli_flag); |
| |
| if (mbx_cmnd != MBX_HEARTBEAT) { |
| if (mboxq->vport) { |
| lpfc_debugfs_disc_trc(mboxq->vport, |
| LPFC_DISC_TRC_MBOX_VPORT, |
| "MBOX Send vport: cmd:x%x mb:x%x x%x", |
| mbx_cmnd, mqe->un.mb_words[0], |
| mqe->un.mb_words[1]); |
| } else { |
| lpfc_debugfs_disc_trc(phba->pport, |
| LPFC_DISC_TRC_MBOX, |
| "MBOX Send: cmd:x%x mb:x%x x%x", |
| mbx_cmnd, mqe->un.mb_words[0], |
| mqe->un.mb_words[1]); |
| } |
| } |
| psli->slistat.mbox_cmd++; |
| |
| /* Post the mailbox command to the port */ |
| rc = lpfc_sli4_mq_put(phba->sli4_hba.mbx_wq, mqe); |
| if (rc != MBX_SUCCESS) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):2533 Mailbox command x%x (x%x) " |
| "cannot issue Data: x%x x%x\n", |
| mboxq->vport ? mboxq->vport->vpi : 0, |
| mboxq->u.mb.mbxCommand, |
| lpfc_sli4_mbox_opcode_get(phba, mboxq), |
| psli->sli_flag, MBX_NOWAIT); |
| goto out_not_finished; |
| } |
| |
| return rc; |
| |
| out_not_finished: |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED; |
| __lpfc_mbox_cmpl_put(phba, mboxq); |
| /* Release the token */ |
| psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| phba->sli.mbox_active = NULL; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| |
| return MBX_NOT_FINISHED; |
| } |
| |
| /** |
| * lpfc_sli_issue_mbox - Wrapper func for issuing mailbox command |
| * @phba: Pointer to HBA context object. |
| * @pmbox: Pointer to mailbox object. |
| * @flag: Flag indicating how the mailbox need to be processed. |
| * |
| * This routine wraps the actual SLI3 or SLI4 mailbox issuing routine from |
| * the API jump table function pointer from the lpfc_hba struct. |
| * |
| * Return codes the caller owns the mailbox command after the return of the |
| * function. |
| **/ |
| int |
| lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag) |
| { |
| return phba->lpfc_sli_issue_mbox(phba, pmbox, flag); |
| } |
| |
| /** |
| * lpfc_mbox_api_table_setup - Set up mbox api fucntion jump table |
| * @phba: The hba struct for which this call is being executed. |
| * @dev_grp: The HBA PCI-Device group number. |
| * |
| * This routine sets up the mbox interface API function jump table in @phba |
| * struct. |
| * Returns: 0 - success, -ENODEV - failure. |
| **/ |
| int |
| lpfc_mbox_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) |
| { |
| |
| switch (dev_grp) { |
| case LPFC_PCI_DEV_LP: |
| phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s3; |
| phba->lpfc_sli_handle_slow_ring_event = |
| lpfc_sli_handle_slow_ring_event_s3; |
| phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s3; |
| phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s3; |
| phba->lpfc_sli_brdready = lpfc_sli_brdready_s3; |
| break; |
| case LPFC_PCI_DEV_OC: |
| phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s4; |
| phba->lpfc_sli_handle_slow_ring_event = |
| lpfc_sli_handle_slow_ring_event_s4; |
| phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s4; |
| phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s4; |
| phba->lpfc_sli_brdready = lpfc_sli_brdready_s4; |
| break; |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "1420 Invalid HBA PCI-device group: 0x%x\n", |
| dev_grp); |
| return -ENODEV; |
| break; |
| } |
| return 0; |
| } |
| |
| /** |
| * __lpfc_sli_ringtx_put - Add an iocb to the txq |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @piocb: Pointer to address of newly added command iocb. |
| * |
| * This function is called with hbalock held to add a command |
| * iocb to the txq when SLI layer cannot submit the command iocb |
| * to the ring. |
| **/ |
| static void |
| __lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq *piocb) |
| { |
| /* Insert the caller's iocb in the txq tail for later processing. */ |
| list_add_tail(&piocb->list, &pring->txq); |
| pring->txq_cnt++; |
| } |
| |
| /** |
| * lpfc_sli_next_iocb - Get the next iocb in the txq |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @piocb: Pointer to address of newly added command iocb. |
| * |
| * This function is called with hbalock held before a new |
| * iocb is submitted to the firmware. This function checks |
| * txq to flush the iocbs in txq to Firmware before |
| * submitting new iocbs to the Firmware. |
| * If there are iocbs in the txq which need to be submitted |
| * to firmware, lpfc_sli_next_iocb returns the first element |
| * of the txq after dequeuing it from txq. |
| * If there is no iocb in the txq then the function will return |
| * *piocb and *piocb is set to NULL. Caller needs to check |
| * *piocb to find if there are more commands in the txq. |
| **/ |
| static struct lpfc_iocbq * |
| lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq **piocb) |
| { |
| struct lpfc_iocbq * nextiocb; |
| |
| nextiocb = lpfc_sli_ringtx_get(phba, pring); |
| if (!nextiocb) { |
| nextiocb = *piocb; |
| *piocb = NULL; |
| } |
| |
| return nextiocb; |
| } |
| |
| /** |
| * __lpfc_sli_issue_iocb_s3 - SLI3 device lockless ver of lpfc_sli_issue_iocb |
| * @phba: Pointer to HBA context object. |
| * @ring_number: SLI ring number to issue iocb on. |
| * @piocb: Pointer to command iocb. |
| * @flag: Flag indicating if this command can be put into txq. |
| * |
| * __lpfc_sli_issue_iocb_s3 is used by other functions in the driver to issue |
| * an iocb command to an HBA with SLI-3 interface spec. If the PCI slot is |
| * recovering from error state, if HBA is resetting or if LPFC_STOP_IOCB_EVENT |
| * flag is turned on, the function returns IOCB_ERROR. When the link is down, |
| * this function allows only iocbs for posting buffers. This function finds |
| * next available slot in the command ring and posts the command to the |
| * available slot and writes the port attention register to request HBA start |
| * processing new iocb. If there is no slot available in the ring and |
| * flag & SLI_IOCB_RET_IOCB is set, the new iocb is added to the txq, otherwise |
| * the function returns IOCB_BUSY. |
| * |
| * This function is called with hbalock held. The function will return success |
| * after it successfully submit the iocb to firmware or after adding to the |
| * txq. |
| **/ |
| static int |
| __lpfc_sli_issue_iocb_s3(struct lpfc_hba *phba, uint32_t ring_number, |
| struct lpfc_iocbq *piocb, uint32_t flag) |
| { |
| struct lpfc_iocbq *nextiocb; |
| IOCB_t *iocb; |
| struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number]; |
| |
| if (piocb->iocb_cmpl && (!piocb->vport) && |
| (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) && |
| (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) { |
| lpfc_printf_log(phba, KERN_ERR, |
| LOG_SLI | LOG_VPORT, |
| "1807 IOCB x%x failed. No vport\n", |
| piocb->iocb.ulpCommand); |
| dump_stack(); |
| return IOCB_ERROR; |
| } |
| |
| |
| /* If the PCI channel is in offline state, do not post iocbs. */ |
| if (unlikely(pci_channel_offline(phba->pcidev))) |
| return IOCB_ERROR; |
| |
| /* If HBA has a deferred error attention, fail the iocb. */ |
| if (unlikely(phba->hba_flag & DEFER_ERATT)) |
| return IOCB_ERROR; |
| |
| /* |
| * We should never get an IOCB if we are in a < LINK_DOWN state |
| */ |
| if (unlikely(phba->link_state < LPFC_LINK_DOWN)) |
| return IOCB_ERROR; |
| |
| /* |
| * Check to see if we are blocking IOCB processing because of a |
| * outstanding event. |
| */ |
| if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT)) |
| goto iocb_busy; |
| |
| if (unlikely(phba->link_state == LPFC_LINK_DOWN)) { |
| /* |
| * Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF |
| * can be issued if the link is not up. |
| */ |
| switch (piocb->iocb.ulpCommand) { |
| case CMD_GEN_REQUEST64_CR: |
| case CMD_GEN_REQUEST64_CX: |
| if (!(phba->sli.sli_flag & LPFC_MENLO_MAINT) || |
| (piocb->iocb.un.genreq64.w5.hcsw.Rctl != |
| FC_RCTL_DD_UNSOL_CMD) || |
| (piocb->iocb.un.genreq64.w5.hcsw.Type != |
| MENLO_TRANSPORT_TYPE)) |
| |
| goto iocb_busy; |
| break; |
| case CMD_QUE_RING_BUF_CN: |
| case CMD_QUE_RING_BUF64_CN: |
| /* |
| * For IOCBs, like QUE_RING_BUF, that have no rsp ring |
| * completion, iocb_cmpl MUST be 0. |
| */ |
| if (piocb->iocb_cmpl) |
| piocb->iocb_cmpl = NULL; |
| /*FALLTHROUGH*/ |
| case CMD_CREATE_XRI_CR: |
| case CMD_CLOSE_XRI_CN: |
| case CMD_CLOSE_XRI_CX: |
| break; |
| default: |
| goto iocb_busy; |
| } |
| |
| /* |
| * For FCP commands, we must be in a state where we can process link |
| * attention events. |
| */ |
| } else if (unlikely(pring->ringno == phba->sli.fcp_ring && |
| !(phba->sli.sli_flag & LPFC_PROCESS_LA))) { |
| goto iocb_busy; |
| } |
| |
| while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) && |
| (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb))) |
| lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb); |
| |
| if (iocb) |
| lpfc_sli_update_ring(phba, pring); |
| else |
| lpfc_sli_update_full_ring(phba, pring); |
| |
| if (!piocb) |
| return IOCB_SUCCESS; |
| |
| goto out_busy; |
| |
| iocb_busy: |
| pring->stats.iocb_cmd_delay++; |
| |
| out_busy: |
| |
| if (!(flag & SLI_IOCB_RET_IOCB)) { |
| __lpfc_sli_ringtx_put(phba, pring, piocb); |
| return IOCB_SUCCESS; |
| } |
| |
| return IOCB_BUSY; |
| } |
| |
| /** |
| * lpfc_sli4_bpl2sgl - Convert the bpl/bde to a sgl. |
| * @phba: Pointer to HBA context object. |
| * @piocb: Pointer to command iocb. |
| * @sglq: Pointer to the scatter gather queue object. |
| * |
| * This routine converts the bpl or bde that is in the IOCB |
| * to a sgl list for the sli4 hardware. The physical address |
| * of the bpl/bde is converted back to a virtual address. |
| * If the IOCB contains a BPL then the list of BDE's is |
| * converted to sli4_sge's. If the IOCB contains a single |
| * BDE then it is converted to a single sli_sge. |
| * The IOCB is still in cpu endianess so the contents of |
| * the bpl can be used without byte swapping. |
| * |
| * Returns valid XRI = Success, NO_XRI = Failure. |
| **/ |
| static uint16_t |
| lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq, |
| struct lpfc_sglq *sglq) |
| { |
| uint16_t xritag = NO_XRI; |
| struct ulp_bde64 *bpl = NULL; |
| struct ulp_bde64 bde; |
| struct sli4_sge *sgl = NULL; |
| IOCB_t *icmd; |
| int numBdes = 0; |
| int i = 0; |
| |
| if (!piocbq || !sglq) |
| return xritag; |
| |
| sgl = (struct sli4_sge *)sglq->sgl; |
| icmd = &piocbq->iocb; |
| if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) { |
| numBdes = icmd->un.genreq64.bdl.bdeSize / |
| sizeof(struct ulp_bde64); |
| /* The addrHigh and addrLow fields within the IOCB |
| * have not been byteswapped yet so there is no |
| * need to swap them back. |
| */ |
| bpl = (struct ulp_bde64 *) |
| ((struct lpfc_dmabuf *)piocbq->context3)->virt; |
| |
| if (!bpl) |
| return xritag; |
| |
| for (i = 0; i < numBdes; i++) { |
| /* Should already be byte swapped. */ |
| sgl->addr_hi = bpl->addrHigh; |
| sgl->addr_lo = bpl->addrLow; |
| /* swap the size field back to the cpu so we |
| * can assign it to the sgl. |
| */ |
| bde.tus.w = le32_to_cpu(bpl->tus.w); |
| bf_set(lpfc_sli4_sge_len, sgl, bde.tus.f.bdeSize); |
| if ((i+1) == numBdes) |
| bf_set(lpfc_sli4_sge_last, sgl, 1); |
| else |
| bf_set(lpfc_sli4_sge_last, sgl, 0); |
| sgl->word2 = cpu_to_le32(sgl->word2); |
| sgl->word3 = cpu_to_le32(sgl->word3); |
| bpl++; |
| sgl++; |
| } |
| } else if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BDE_64) { |
| /* The addrHigh and addrLow fields of the BDE have not |
| * been byteswapped yet so they need to be swapped |
| * before putting them in the sgl. |
| */ |
| sgl->addr_hi = |
| cpu_to_le32(icmd->un.genreq64.bdl.addrHigh); |
| sgl->addr_lo = |
| cpu_to_le32(icmd->un.genreq64.bdl.addrLow); |
| bf_set(lpfc_sli4_sge_len, sgl, |
| icmd->un.genreq64.bdl.bdeSize); |
| bf_set(lpfc_sli4_sge_last, sgl, 1); |
| sgl->word2 = cpu_to_le32(sgl->word2); |
| sgl->word3 = cpu_to_le32(sgl->word3); |
| } |
| return sglq->sli4_xritag; |
| } |
| |
| /** |
| * lpfc_sli4_scmd_to_wqidx_distr - scsi command to SLI4 WQ index distribution |
| * @phba: Pointer to HBA context object. |
| * |
| * This routine performs a round robin SCSI command to SLI4 FCP WQ index |
| * distribution. This is called by __lpfc_sli_issue_iocb_s4() with the hbalock |
| * held. |
| * |
| * Return: index into SLI4 fast-path FCP queue index. |
| **/ |
| static uint32_t |
| lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba) |
| { |
| ++phba->fcp_qidx; |
| if (phba->fcp_qidx >= phba->cfg_fcp_wq_count) |
| phba->fcp_qidx = 0; |
| |
| return phba->fcp_qidx; |
| } |
| |
| /** |
| * lpfc_sli_iocb2wqe - Convert the IOCB to a work queue entry. |
| * @phba: Pointer to HBA context object. |
| * @piocb: Pointer to command iocb. |
| * @wqe: Pointer to the work queue entry. |
| * |
| * This routine converts the iocb command to its Work Queue Entry |
| * equivalent. The wqe pointer should not have any fields set when |
| * this routine is called because it will memcpy over them. |
| * This routine does not set the CQ_ID or the WQEC bits in the |
| * wqe. |
| * |
| * Returns: 0 = Success, IOCB_ERROR = Failure. |
| **/ |
| static int |
| lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq, |
| union lpfc_wqe *wqe) |
| { |
| uint32_t xmit_len = 0, total_len = 0; |
| uint8_t ct = 0; |
| uint32_t fip; |
| uint32_t abort_tag; |
| uint8_t command_type = ELS_COMMAND_NON_FIP; |
| uint8_t cmnd; |
| uint16_t xritag; |
| struct ulp_bde64 *bpl = NULL; |
| uint32_t els_id = ELS_ID_DEFAULT; |
| int numBdes, i; |
| struct ulp_bde64 bde; |
| |
| fip = phba->hba_flag & HBA_FIP_SUPPORT; |
| /* The fcp commands will set command type */ |
| if (iocbq->iocb_flag & LPFC_IO_FCP) |
| command_type = FCP_COMMAND; |
| else if (fip && (iocbq->iocb_flag & LPFC_FIP_ELS_ID_MASK)) |
| command_type = ELS_COMMAND_FIP; |
| else |
| command_type = ELS_COMMAND_NON_FIP; |
| |
| /* Some of the fields are in the right position already */ |
| memcpy(wqe, &iocbq->iocb, sizeof(union lpfc_wqe)); |
| abort_tag = (uint32_t) iocbq->iotag; |
| xritag = iocbq->sli4_xritag; |
| wqe->words[7] = 0; /* The ct field has moved so reset */ |
| /* words0-2 bpl convert bde */ |
| if (iocbq->iocb.un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) { |
| numBdes = iocbq->iocb.un.genreq64.bdl.bdeSize / |
| sizeof(struct ulp_bde64); |
| bpl = (struct ulp_bde64 *) |
| ((struct lpfc_dmabuf *)iocbq->context3)->virt; |
| if (!bpl) |
| return IOCB_ERROR; |
| |
| /* Should already be byte swapped. */ |
| wqe->generic.bde.addrHigh = le32_to_cpu(bpl->addrHigh); |
| wqe->generic.bde.addrLow = le32_to_cpu(bpl->addrLow); |
| /* swap the size field back to the cpu so we |
| * can assign it to the sgl. |
| */ |
| wqe->generic.bde.tus.w = le32_to_cpu(bpl->tus.w); |
| xmit_len = wqe->generic.bde.tus.f.bdeSize; |
| total_len = 0; |
| for (i = 0; i < numBdes; i++) { |
| bde.tus.w = le32_to_cpu(bpl[i].tus.w); |
| total_len += bde.tus.f.bdeSize; |
| } |
| } else |
| xmit_len = iocbq->iocb.un.fcpi64.bdl.bdeSize; |
| |
| iocbq->iocb.ulpIoTag = iocbq->iotag; |
| cmnd = iocbq->iocb.ulpCommand; |
| |
| switch (iocbq->iocb.ulpCommand) { |
| case CMD_ELS_REQUEST64_CR: |
| if (!iocbq->iocb.ulpLe) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2007 Only Limited Edition cmd Format" |
| " supported 0x%x\n", |
| iocbq->iocb.ulpCommand); |
| return IOCB_ERROR; |
| } |
| wqe->els_req.payload_len = xmit_len; |
| /* Els_reguest64 has a TMO */ |
| bf_set(wqe_tmo, &wqe->els_req.wqe_com, |
| iocbq->iocb.ulpTimeout); |
| /* Need a VF for word 4 set the vf bit*/ |
| bf_set(els_req64_vf, &wqe->els_req, 0); |
| /* And a VFID for word 12 */ |
| bf_set(els_req64_vfid, &wqe->els_req, 0); |
| /* |
| * Set ct field to 3, indicates that the context_tag field |
| * contains the FCFI and remote N_Port_ID is |
| * in word 5. |
| */ |
| |
| ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l); |
| bf_set(lpfc_wqe_gen_context, &wqe->generic, |
| iocbq->iocb.ulpContext); |
| |
| bf_set(lpfc_wqe_gen_ct, &wqe->generic, ct); |
| bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0); |
| /* CCP CCPE PV PRI in word10 were set in the memcpy */ |
| |
| if (command_type == ELS_COMMAND_FIP) { |
| els_id = ((iocbq->iocb_flag & LPFC_FIP_ELS_ID_MASK) |
| >> LPFC_FIP_ELS_ID_SHIFT); |
| } |
| bf_set(lpfc_wqe_gen_els_id, &wqe->generic, els_id); |
| |
| break; |
| case CMD_XMIT_SEQUENCE64_CX: |
| bf_set(lpfc_wqe_gen_context, &wqe->generic, |
| iocbq->iocb.un.ulpWord[3]); |
| wqe->generic.word3 = 0; |
| bf_set(wqe_rcvoxid, &wqe->generic, iocbq->iocb.ulpContext); |
| /* The entire sequence is transmitted for this IOCB */ |
| xmit_len = total_len; |
| cmnd = CMD_XMIT_SEQUENCE64_CR; |
| case CMD_XMIT_SEQUENCE64_CR: |
| /* word3 iocb=io_tag32 wqe=payload_offset */ |
| /* payload offset used for multilpe outstanding |
| * sequences on the same exchange |
| */ |
| wqe->words[3] = 0; |
| /* word4 relative_offset memcpy */ |
| /* word5 r_ctl/df_ctl memcpy */ |
| bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0); |
| wqe->xmit_sequence.xmit_len = xmit_len; |
| command_type = OTHER_COMMAND; |
| break; |
| case CMD_XMIT_BCAST64_CN: |
| /* word3 iocb=iotag32 wqe=payload_len */ |
| wqe->words[3] = 0; /* no definition for this in wqe */ |
| /* word4 iocb=rsvd wqe=rsvd */ |
| /* word5 iocb=rctl/type/df_ctl wqe=rctl/type/df_ctl memcpy */ |
| /* word6 iocb=ctxt_tag/io_tag wqe=ctxt_tag/xri */ |
| bf_set(lpfc_wqe_gen_ct, &wqe->generic, |
| ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l)); |
| break; |
| case CMD_FCP_IWRITE64_CR: |
| command_type = FCP_COMMAND_DATA_OUT; |
| /* The struct for wqe fcp_iwrite has 3 fields that are somewhat |
| * confusing. |
| * word3 is payload_len: byte offset to the sgl entry for the |
| * fcp_command. |
| * word4 is total xfer len, same as the IOCB->ulpParameter. |
| * word5 is initial xfer len 0 = wait for xfer-ready |
| */ |
| |
| /* Always wait for xfer-ready before sending data */ |
| wqe->fcp_iwrite.initial_xfer_len = 0; |
| /* word 4 (xfer length) should have been set on the memcpy */ |
| |
| /* allow write to fall through to read */ |
| case CMD_FCP_IREAD64_CR: |
| /* FCP_CMD is always the 1st sgl entry */ |
| wqe->fcp_iread.payload_len = |
| xmit_len + sizeof(struct fcp_rsp); |
| |
| /* word 4 (xfer length) should have been set on the memcpy */ |
| |
| bf_set(lpfc_wqe_gen_erp, &wqe->generic, |
| iocbq->iocb.ulpFCP2Rcvy); |
| bf_set(lpfc_wqe_gen_lnk, &wqe->generic, iocbq->iocb.ulpXS); |
| /* The XC bit and the XS bit are similar. The driver never |
| * tracked whether or not the exchange was previouslly open. |
| * XC = Exchange create, 0 is create. 1 is already open. |
| * XS = link cmd: 1 do not close the exchange after command. |
| * XS = 0 close exchange when command completes. |
| * The only time we would not set the XC bit is when the XS bit |
| * is set and we are sending our 2nd or greater command on |
| * this exchange. |
| */ |
| /* Always open the exchange */ |
| bf_set(wqe_xc, &wqe->fcp_iread.wqe_com, 0); |
| |
| wqe->words[10] &= 0xffff0000; /* zero out ebde count */ |
| bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU); |
| break; |
| case CMD_FCP_ICMND64_CR: |
| /* Always open the exchange */ |
| bf_set(wqe_xc, &wqe->fcp_iread.wqe_com, 0); |
| |
| wqe->words[4] = 0; |
| wqe->words[10] &= 0xffff0000; /* zero out ebde count */ |
| bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0); |
| break; |
| case CMD_GEN_REQUEST64_CR: |
| /* word3 command length is described as byte offset to the |
| * rsp_data. Would always be 16, sizeof(struct sli4_sge) |
| * sgl[0] = cmnd |
| * sgl[1] = rsp. |
| * |
| */ |
| wqe->gen_req.command_len = xmit_len; |
| /* Word4 parameter copied in the memcpy */ |
| /* Word5 [rctl, type, df_ctl, la] copied in memcpy */ |
| /* word6 context tag copied in memcpy */ |
| if (iocbq->iocb.ulpCt_h || iocbq->iocb.ulpCt_l) { |
| ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l); |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2015 Invalid CT %x command 0x%x\n", |
| ct, iocbq->iocb.ulpCommand); |
| return IOCB_ERROR; |
| } |
| bf_set(lpfc_wqe_gen_ct, &wqe->generic, 0); |
| bf_set(wqe_tmo, &wqe->gen_req.wqe_com, |
| iocbq->iocb.ulpTimeout); |
| |
| bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU); |
| command_type = OTHER_COMMAND; |
| break; |
| case CMD_XMIT_ELS_RSP64_CX: |
| /* words0-2 BDE memcpy */ |
| /* word3 iocb=iotag32 wqe=rsvd */ |
| wqe->words[3] = 0; |
| /* word4 iocb=did wge=rsvd. */ |
| wqe->words[4] = 0; |
| /* word5 iocb=rsvd wge=did */ |
| bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest, |
| iocbq->iocb.un.elsreq64.remoteID); |
| |
| bf_set(lpfc_wqe_gen_ct, &wqe->generic, |
| ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l)); |
| |
| bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU); |
| bf_set(wqe_rcvoxid, &wqe->generic, iocbq->iocb.ulpContext); |
| if (!iocbq->iocb.ulpCt_h && iocbq->iocb.ulpCt_l) |
| bf_set(lpfc_wqe_gen_context, &wqe->generic, |
| iocbq->vport->vpi + phba->vpi_base); |
| command_type = OTHER_COMMAND; |
| break; |
| case CMD_CLOSE_XRI_CN: |
| case CMD_ABORT_XRI_CN: |
| case CMD_ABORT_XRI_CX: |
| /* words 0-2 memcpy should be 0 rserved */ |
| /* port will send abts */ |
| if (iocbq->iocb.ulpCommand == CMD_CLOSE_XRI_CN) |
| /* |
| * The link is down so the fw does not need to send abts |
| * on the wire. |
| */ |
| bf_set(abort_cmd_ia, &wqe->abort_cmd, 1); |
| else |
| bf_set(abort_cmd_ia, &wqe->abort_cmd, 0); |
| bf_set(abort_cmd_criteria, &wqe->abort_cmd, T_XRI_TAG); |
| wqe->words[5] = 0; |
| bf_set(lpfc_wqe_gen_ct, &wqe->generic, |
| ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l)); |
| abort_tag = iocbq->iocb.un.acxri.abortIoTag; |
| /* |
| * The abort handler will send us CMD_ABORT_XRI_CN or |
| * CMD_CLOSE_XRI_CN and the fw only accepts CMD_ABORT_XRI_CX |
| */ |
| bf_set(lpfc_wqe_gen_command, &wqe->generic, CMD_ABORT_XRI_CX); |
| cmnd = CMD_ABORT_XRI_CX; |
| command_type = OTHER_COMMAND; |
| xritag = 0; |
| break; |
| case CMD_XMIT_BLS_RSP64_CX: |
| /* As BLS ABTS-ACC WQE is very different from other WQEs, |
| * we re-construct this WQE here based on information in |
| * iocbq from scratch. |
| */ |
| memset(wqe, 0, sizeof(union lpfc_wqe)); |
| /* OX_ID is invariable to who sent ABTS to CT exchange */ |
| bf_set(xmit_bls_rsp64_oxid, &wqe->xmit_bls_rsp, |
| bf_get(lpfc_abts_oxid, &iocbq->iocb.un.bls_acc)); |
| if (bf_get(lpfc_abts_orig, &iocbq->iocb.un.bls_acc) == |
| LPFC_ABTS_UNSOL_INT) { |
| /* ABTS sent by initiator to CT exchange, the |
| * RX_ID field will be filled with the newly |
| * allocated responder XRI. |
| */ |
| bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp, |
| iocbq->sli4_xritag); |
| } else { |
| /* ABTS sent by responder to CT exchange, the |
| * RX_ID field will be filled with the responder |
| * RX_ID from ABTS. |
| */ |
| bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp, |
| bf_get(lpfc_abts_rxid, &iocbq->iocb.un.bls_acc)); |
| } |
| bf_set(xmit_bls_rsp64_seqcnthi, &wqe->xmit_bls_rsp, 0xffff); |
| bf_set(wqe_xmit_bls_pt, &wqe->xmit_bls_rsp.wqe_dest, 0x1); |
| bf_set(wqe_ctxt_tag, &wqe->xmit_bls_rsp.wqe_com, |
| iocbq->iocb.ulpContext); |
| /* Overwrite the pre-set comnd type with OTHER_COMMAND */ |
| command_type = OTHER_COMMAND; |
| break; |
| case CMD_XRI_ABORTED_CX: |
| case CMD_CREATE_XRI_CR: /* Do we expect to use this? */ |
| /* words0-2 are all 0's no bde */ |
| /* word3 and word4 are rsvrd */ |
| wqe->words[3] = 0; |
| wqe->words[4] = 0; |
| /* word5 iocb=rsvd wge=did */ |
| /* There is no remote port id in the IOCB? */ |
| /* Let this fall through and fail */ |
| case CMD_IOCB_FCP_IBIDIR64_CR: /* bidirectional xfer */ |
| case CMD_FCP_TSEND64_CX: /* Target mode send xfer-ready */ |
| case CMD_FCP_TRSP64_CX: /* Target mode rcv */ |
| case CMD_FCP_AUTO_TRSP_CX: /* Auto target rsp */ |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2014 Invalid command 0x%x\n", |
| iocbq->iocb.ulpCommand); |
| return IOCB_ERROR; |
| break; |
| |
| } |
| bf_set(lpfc_wqe_gen_xri, &wqe->generic, xritag); |
| bf_set(lpfc_wqe_gen_request_tag, &wqe->generic, iocbq->iotag); |
| wqe->generic.abort_tag = abort_tag; |
| bf_set(lpfc_wqe_gen_cmd_type, &wqe->generic, command_type); |
| bf_set(lpfc_wqe_gen_command, &wqe->generic, cmnd); |
| bf_set(lpfc_wqe_gen_class, &wqe->generic, iocbq->iocb.ulpClass); |
| bf_set(lpfc_wqe_gen_cq_id, &wqe->generic, LPFC_WQE_CQ_ID_DEFAULT); |
| |
| return 0; |
| } |
| |
| /** |
| * __lpfc_sli_issue_iocb_s4 - SLI4 device lockless ver of lpfc_sli_issue_iocb |
| * @phba: Pointer to HBA context object. |
| * @ring_number: SLI ring number to issue iocb on. |
| * @piocb: Pointer to command iocb. |
| * @flag: Flag indicating if this command can be put into txq. |
| * |
| * __lpfc_sli_issue_iocb_s4 is used by other functions in the driver to issue |
| * an iocb command to an HBA with SLI-4 interface spec. |
| * |
| * This function is called with hbalock held. The function will return success |
| * after it successfully submit the iocb to firmware or after adding to the |
| * txq. |
| **/ |
| static int |
| __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number, |
| struct lpfc_iocbq *piocb, uint32_t flag) |
| { |
| struct lpfc_sglq *sglq; |
| uint16_t xritag; |
| union lpfc_wqe wqe; |
| struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number]; |
| |
| if (piocb->sli4_xritag == NO_XRI) { |
| if (piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN || |
| piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN) |
| sglq = NULL; |
| else { |
| sglq = __lpfc_sli_get_sglq(phba); |
| if (!sglq) |
| return IOCB_ERROR; |
| piocb->sli4_xritag = sglq->sli4_xritag; |
| } |
| } else if (piocb->iocb_flag & LPFC_IO_FCP) { |
| sglq = NULL; /* These IO's already have an XRI and |
| * a mapped sgl. |
| */ |
| } else { |
| /* This is a continuation of a commandi,(CX) so this |
| * sglq is on the active list |
| */ |
| sglq = __lpfc_get_active_sglq(phba, piocb->sli4_xritag); |
| if (!sglq) |
| return IOCB_ERROR; |
| } |
| |
| if (sglq) { |
| xritag = lpfc_sli4_bpl2sgl(phba, piocb, sglq); |
| if (xritag != sglq->sli4_xritag) |
| return IOCB_ERROR; |
| } |
| |
| if (lpfc_sli4_iocb2wqe(phba, piocb, &wqe)) |
| return IOCB_ERROR; |
| |
| if ((piocb->iocb_flag & LPFC_IO_FCP) || |
| (piocb->iocb_flag & LPFC_USE_FCPWQIDX)) { |
| /* |
| * For FCP command IOCB, get a new WQ index to distribute |
| * WQE across the WQsr. On the other hand, for abort IOCB, |
| * it carries the same WQ index to the original command |
| * IOCB. |
| */ |
| if (piocb->iocb_flag & LPFC_IO_FCP) |
| piocb->fcp_wqidx = lpfc_sli4_scmd_to_wqidx_distr(phba); |
| if (lpfc_sli4_wq_put(phba->sli4_hba.fcp_wq[piocb->fcp_wqidx], |
| &wqe)) |
| return IOCB_ERROR; |
| } else { |
| if (lpfc_sli4_wq_put(phba->sli4_hba.els_wq, &wqe)) |
| return IOCB_ERROR; |
| } |
| lpfc_sli_ringtxcmpl_put(phba, pring, piocb); |
| |
| return 0; |
| } |
| |
| /** |
| * __lpfc_sli_issue_iocb - Wrapper func of lockless version for issuing iocb |
| * |
| * This routine wraps the actual lockless version for issusing IOCB function |
| * pointer from the lpfc_hba struct. |
| * |
| * Return codes: |
| * IOCB_ERROR - Error |
| * IOCB_SUCCESS - Success |
| * IOCB_BUSY - Busy |
| **/ |
| static inline int |
| __lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number, |
| struct lpfc_iocbq *piocb, uint32_t flag) |
| { |
| return phba->__lpfc_sli_issue_iocb(phba, ring_number, piocb, flag); |
| } |
| |
| /** |
| * lpfc_sli_api_table_setup - Set up sli api fucntion jump table |
| * @phba: The hba struct for which this call is being executed. |
| * @dev_grp: The HBA PCI-Device group number. |
| * |
| * This routine sets up the SLI interface API function jump table in @phba |
| * struct. |
| * Returns: 0 - success, -ENODEV - failure. |
| **/ |
| int |
| lpfc_sli_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) |
| { |
| |
| switch (dev_grp) { |
| case LPFC_PCI_DEV_LP: |
| phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s3; |
| phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s3; |
| break; |
| case LPFC_PCI_DEV_OC: |
| phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s4; |
| phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s4; |
| break; |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "1419 Invalid HBA PCI-device group: 0x%x\n", |
| dev_grp); |
| return -ENODEV; |
| break; |
| } |
| phba->lpfc_get_iocb_from_iocbq = lpfc_get_iocb_from_iocbq; |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_issue_iocb - Wrapper function for __lpfc_sli_issue_iocb |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @piocb: Pointer to command iocb. |
| * @flag: Flag indicating if this command can be put into txq. |
| * |
| * lpfc_sli_issue_iocb is a wrapper around __lpfc_sli_issue_iocb |
| * function. This function gets the hbalock and calls |
| * __lpfc_sli_issue_iocb function and will return the error returned |
| * by __lpfc_sli_issue_iocb function. This wrapper is used by |
| * functions which do not hold hbalock. |
| **/ |
| int |
| lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number, |
| struct lpfc_iocbq *piocb, uint32_t flag) |
| { |
| unsigned long iflags; |
| int rc; |
| |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag); |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| |
| return rc; |
| } |
| |
| /** |
| * lpfc_extra_ring_setup - Extra ring setup function |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called while driver attaches with the |
| * HBA to setup the extra ring. The extra ring is used |
| * only when driver needs to support target mode functionality |
| * or IP over FC functionalities. |
| * |
| * This function is called with no lock held. |
| **/ |
| static int |
| lpfc_extra_ring_setup( struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli; |
| struct lpfc_sli_ring *pring; |
| |
| psli = &phba->sli; |
| |
| /* Adjust cmd/rsp ring iocb entries more evenly */ |
| |
| /* Take some away from the FCP ring */ |
| pring = &psli->ring[psli->fcp_ring]; |
| pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES; |
| pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES; |
| pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES; |
| pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES; |
| |
| /* and give them to the extra ring */ |
| pring = &psli->ring[psli->extra_ring]; |
| |
| pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES; |
| pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES; |
| pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES; |
| pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES; |
| |
| /* Setup default profile for this ring */ |
| pring->iotag_max = 4096; |
| pring->num_mask = 1; |
| pring->prt[0].profile = 0; /* Mask 0 */ |
| pring->prt[0].rctl = phba->cfg_multi_ring_rctl; |
| pring->prt[0].type = phba->cfg_multi_ring_type; |
| pring->prt[0].lpfc_sli_rcv_unsol_event = NULL; |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_async_event_handler - ASYNC iocb handler function |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @iocbq: Pointer to iocb object. |
| * |
| * This function is called by the slow ring event handler |
| * function when there is an ASYNC event iocb in the ring. |
| * This function is called with no lock held. |
| * Currently this function handles only temperature related |
| * ASYNC events. The function decodes the temperature sensor |
| * event message and posts events for the management applications. |
| **/ |
| static void |
| lpfc_sli_async_event_handler(struct lpfc_hba * phba, |
| struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq) |
| { |
| IOCB_t *icmd; |
| uint16_t evt_code; |
| uint16_t temp; |
| struct temp_event temp_event_data; |
| struct Scsi_Host *shost; |
| uint32_t *iocb_w; |
| |
| icmd = &iocbq->iocb; |
| evt_code = icmd->un.asyncstat.evt_code; |
| temp = icmd->ulpContext; |
| |
| if ((evt_code != ASYNC_TEMP_WARN) && |
| (evt_code != ASYNC_TEMP_SAFE)) { |
| iocb_w = (uint32_t *) icmd; |
| lpfc_printf_log(phba, |
| KERN_ERR, |
| LOG_SLI, |
| "0346 Ring %d handler: unexpected ASYNC_STATUS" |
| " evt_code 0x%x\n" |
| "W0 0x%08x W1 0x%08x W2 0x%08x W3 0x%08x\n" |
| "W4 0x%08x W5 0x%08x W6 0x%08x W7 0x%08x\n" |
| "W8 0x%08x W9 0x%08x W10 0x%08x W11 0x%08x\n" |
| "W12 0x%08x W13 0x%08x W14 0x%08x W15 0x%08x\n", |
| pring->ringno, |
| icmd->un.asyncstat.evt_code, |
| iocb_w[0], iocb_w[1], iocb_w[2], iocb_w[3], |
| iocb_w[4], iocb_w[5], iocb_w[6], iocb_w[7], |
| iocb_w[8], iocb_w[9], iocb_w[10], iocb_w[11], |
| iocb_w[12], iocb_w[13], iocb_w[14], iocb_w[15]); |
| |
| return; |
| } |
| temp_event_data.data = (uint32_t)temp; |
| temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT; |
| if (evt_code == ASYNC_TEMP_WARN) { |
| temp_event_data.event_code = LPFC_THRESHOLD_TEMP; |
| lpfc_printf_log(phba, |
| KERN_ERR, |
| LOG_TEMP, |
| "0347 Adapter is very hot, please take " |
| "corrective action. temperature : %d Celsius\n", |
| temp); |
| } |
| if (evt_code == ASYNC_TEMP_SAFE) { |
| temp_event_data.event_code = LPFC_NORMAL_TEMP; |
| lpfc_printf_log(phba, |
| KERN_ERR, |
| LOG_TEMP, |
| "0340 Adapter temperature is OK now. " |
| "temperature : %d Celsius\n", |
| temp); |
| } |
| |
| /* Send temperature change event to applications */ |
| shost = lpfc_shost_from_vport(phba->pport); |
| fc_host_post_vendor_event(shost, fc_get_event_number(), |
| sizeof(temp_event_data), (char *) &temp_event_data, |
| LPFC_NL_VENDOR_ID); |
| |
| } |
| |
| |
| /** |
| * lpfc_sli_setup - SLI ring setup function |
| * @phba: Pointer to HBA context object. |
| * |
| * lpfc_sli_setup sets up rings of the SLI interface with |
| * number of iocbs per ring and iotags. This function is |
| * called while driver attach to the HBA and before the |
| * interrupts are enabled. So there is no need for locking. |
| * |
| * This function always returns 0. |
| **/ |
| int |
| lpfc_sli_setup(struct lpfc_hba *phba) |
| { |
| int i, totiocbsize = 0; |
| struct lpfc_sli *psli = &phba->sli; |
| struct lpfc_sli_ring *pring; |
| |
| psli->num_rings = MAX_CONFIGURED_RINGS; |
| psli->sli_flag = 0; |
| psli->fcp_ring = LPFC_FCP_RING; |
| psli->next_ring = LPFC_FCP_NEXT_RING; |
| psli->extra_ring = LPFC_EXTRA_RING; |
| |
| psli->iocbq_lookup = NULL; |
| psli->iocbq_lookup_len = 0; |
| psli->last_iotag = 0; |
| |
| for (i = 0; i < psli->num_rings; i++) { |
| pring = &psli->ring[i]; |
| switch (i) { |
| case LPFC_FCP_RING: /* ring 0 - FCP */ |
| /* numCiocb and numRiocb are used in config_port */ |
| pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES; |
| pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES; |
| pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES; |
| pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES; |
| pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES; |
| pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES; |
| pring->sizeCiocb = (phba->sli_rev == 3) ? |
| SLI3_IOCB_CMD_SIZE : |
| SLI2_IOCB_CMD_SIZE; |
| pring->sizeRiocb = (phba->sli_rev == 3) ? |
| SLI3_IOCB_RSP_SIZE : |
| SLI2_IOCB_RSP_SIZE; |
| pring->iotag_ctr = 0; |
| pring->iotag_max = |
| (phba->cfg_hba_queue_depth * 2); |
| pring->fast_iotag = pring->iotag_max; |
| pring->num_mask = 0; |
| break; |
| case LPFC_EXTRA_RING: /* ring 1 - EXTRA */ |
| /* numCiocb and numRiocb are used in config_port */ |
| pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES; |
| pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES; |
| pring->sizeCiocb = (phba->sli_rev == 3) ? |
| SLI3_IOCB_CMD_SIZE : |
| SLI2_IOCB_CMD_SIZE; |
| pring->sizeRiocb = (phba->sli_rev == 3) ? |
| SLI3_IOCB_RSP_SIZE : |
| SLI2_IOCB_RSP_SIZE; |
| pring->iotag_max = phba->cfg_hba_queue_depth; |
| pring->num_mask = 0; |
| break; |
| case LPFC_ELS_RING: /* ring 2 - ELS / CT */ |
| /* numCiocb and numRiocb are used in config_port */ |
| pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES; |
| pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES; |
| pring->sizeCiocb = (phba->sli_rev == 3) ? |
| SLI3_IOCB_CMD_SIZE : |
| SLI2_IOCB_CMD_SIZE; |
| pring->sizeRiocb = (phba->sli_rev == 3) ? |
| SLI3_IOCB_RSP_SIZE : |
| SLI2_IOCB_RSP_SIZE; |
| pring->fast_iotag = 0; |
| pring->iotag_ctr = 0; |
| pring->iotag_max = 4096; |
| pring->lpfc_sli_rcv_async_status = |
| lpfc_sli_async_event_handler; |
| pring->num_mask = LPFC_MAX_RING_MASK; |
| pring->prt[0].profile = 0; /* Mask 0 */ |
| pring->prt[0].rctl = FC_RCTL_ELS_REQ; |
| pring->prt[0].type = FC_TYPE_ELS; |
| pring->prt[0].lpfc_sli_rcv_unsol_event = |
| lpfc_els_unsol_event; |
| pring->prt[1].profile = 0; /* Mask 1 */ |
| pring->prt[1].rctl = FC_RCTL_ELS_REP; |
| pring->prt[1].type = FC_TYPE_ELS; |
| pring->prt[1].lpfc_sli_rcv_unsol_event = |
| lpfc_els_unsol_event; |
| pring->prt[2].profile = 0; /* Mask 2 */ |
| /* NameServer Inquiry */ |
| pring->prt[2].rctl = FC_RCTL_DD_UNSOL_CTL; |
| /* NameServer */ |
| pring->prt[2].type = FC_TYPE_CT; |
| pring->prt[2].lpfc_sli_rcv_unsol_event = |
| lpfc_ct_unsol_event; |
| pring->prt[3].profile = 0; /* Mask 3 */ |
| /* NameServer response */ |
| pring->prt[3].rctl = FC_RCTL_DD_SOL_CTL; |
| /* NameServer */ |
| pring->prt[3].type = FC_TYPE_CT; |
| pring->prt[3].lpfc_sli_rcv_unsol_event = |
| lpfc_ct_unsol_event; |
| /* abort unsolicited sequence */ |
| pring->prt[4].profile = 0; /* Mask 4 */ |
| pring->prt[4].rctl = FC_RCTL_BA_ABTS; |
| pring->prt[4].type = FC_TYPE_BLS; |
| pring->prt[4].lpfc_sli_rcv_unsol_event = |
| lpfc_sli4_ct_abort_unsol_event; |
| break; |
| } |
| totiocbsize += (pring->numCiocb * pring->sizeCiocb) + |
| (pring->numRiocb * pring->sizeRiocb); |
| } |
| if (totiocbsize > MAX_SLIM_IOCB_SIZE) { |
| /* Too many cmd / rsp ring entries in SLI2 SLIM */ |
| printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in " |
| "SLI2 SLIM Data: x%x x%lx\n", |
| phba->brd_no, totiocbsize, |
| (unsigned long) MAX_SLIM_IOCB_SIZE); |
| } |
| if (phba->cfg_multi_ring_support == 2) |
| lpfc_extra_ring_setup(phba); |
| |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_queue_setup - Queue initialization function |
| * @phba: Pointer to HBA context object. |
| * |
| * lpfc_sli_queue_setup sets up mailbox queues and iocb queues for each |
| * ring. This function also initializes ring indices of each ring. |
| * This function is called during the initialization of the SLI |
| * interface of an HBA. |
| * This function is called with no lock held and always returns |
| * 1. |
| **/ |
| int |
| lpfc_sli_queue_setup(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli; |
| struct lpfc_sli_ring *pring; |
| int i; |
| |
| psli = &phba->sli; |
| spin_lock_irq(&phba->hbalock); |
| INIT_LIST_HEAD(&psli->mboxq); |
| INIT_LIST_HEAD(&psli->mboxq_cmpl); |
| /* Initialize list headers for txq and txcmplq as double linked lists */ |
| for (i = 0; i < psli->num_rings; i++) { |
| pring = &psli->ring[i]; |
| pring->ringno = i; |
| pring->next_cmdidx = 0; |
| pring->local_getidx = 0; |
| pring->cmdidx = 0; |
| INIT_LIST_HEAD(&pring->txq); |
| INIT_LIST_HEAD(&pring->txcmplq); |
| INIT_LIST_HEAD(&pring->iocb_continueq); |
| INIT_LIST_HEAD(&pring->iocb_continue_saveq); |
| INIT_LIST_HEAD(&pring->postbufq); |
| } |
| spin_unlock_irq(&phba->hbalock); |
| return 1; |
| } |
| |
| /** |
| * lpfc_sli_mbox_sys_flush - Flush mailbox command sub-system |
| * @phba: Pointer to HBA context object. |
| * |
| * This routine flushes the mailbox command subsystem. It will unconditionally |
| * flush all the mailbox commands in the three possible stages in the mailbox |
| * command sub-system: pending mailbox command queue; the outstanding mailbox |
| * command; and completed mailbox command queue. It is caller's responsibility |
| * to make sure that the driver is in the proper state to flush the mailbox |
| * command sub-system. Namely, the posting of mailbox commands into the |
| * pending mailbox command queue from the various clients must be stopped; |
| * either the HBA is in a state that it will never works on the outstanding |
| * mailbox command (such as in EEH or ERATT conditions) or the outstanding |
| * mailbox command has been completed. |
| **/ |
| static void |
| lpfc_sli_mbox_sys_flush(struct lpfc_hba *phba) |
| { |
| LIST_HEAD(completions); |
| struct lpfc_sli *psli = &phba->sli; |
| LPFC_MBOXQ_t *pmb; |
| unsigned long iflag; |
| |
| /* Flush all the mailbox commands in the mbox system */ |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| /* The pending mailbox command queue */ |
| list_splice_init(&phba->sli.mboxq, &completions); |
| /* The outstanding active mailbox command */ |
| if (psli->mbox_active) { |
| list_add_tail(&psli->mbox_active->list, &completions); |
| psli->mbox_active = NULL; |
| psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| } |
| /* The completed mailbox command queue */ |
| list_splice_init(&phba->sli.mboxq_cmpl, &completions); |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| |
| /* Return all flushed mailbox commands with MBX_NOT_FINISHED status */ |
| while (!list_empty(&completions)) { |
| list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list); |
| pmb->u.mb.mbxStatus = MBX_NOT_FINISHED; |
| if (pmb->mbox_cmpl) |
| pmb->mbox_cmpl(phba, pmb); |
| } |
| } |
| |
| /** |
| * lpfc_sli_host_down - Vport cleanup function |
| * @vport: Pointer to virtual port object. |
| * |
| * lpfc_sli_host_down is called to clean up the resources |
| * associated with a vport before destroying virtual |
| * port data structures. |
| * This function does following operations: |
| * - Free discovery resources associated with this virtual |
| * port. |
| * - Free iocbs associated with this virtual port in |
| * the txq. |
| * - Send abort for all iocb commands associated with this |
| * vport in txcmplq. |
| * |
| * This function is called with no lock held and always returns 1. |
| **/ |
| int |
| lpfc_sli_host_down(struct lpfc_vport *vport) |
| { |
| LIST_HEAD(completions); |
| struct lpfc_hba *phba = vport->phba; |
| struct lpfc_sli *psli = &phba->sli; |
| struct lpfc_sli_ring *pring; |
| struct lpfc_iocbq *iocb, *next_iocb; |
| int i; |
| unsigned long flags = 0; |
| uint16_t prev_pring_flag; |
| |
| lpfc_cleanup_discovery_resources(vport); |
| |
| spin_lock_irqsave(&phba->hbalock, flags); |
| for (i = 0; i < psli->num_rings; i++) { |
| pring = &psli->ring[i]; |
| prev_pring_flag = pring->flag; |
| /* Only slow rings */ |
| if (pring->ringno == LPFC_ELS_RING) { |
| pring->flag |= LPFC_DEFERRED_RING_EVENT; |
| /* Set the lpfc data pending flag */ |
| set_bit(LPFC_DATA_READY, &phba->data_flags); |
| } |
| /* |
| * Error everything on the txq since these iocbs have not been |
| * given to the FW yet. |
| */ |
| list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { |
| if (iocb->vport != vport) |
| continue; |
| list_move_tail(&iocb->list, &completions); |
| pring->txq_cnt--; |
| } |
| |
| /* Next issue ABTS for everything on the txcmplq */ |
| list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, |
| list) { |
| if (iocb->vport != vport) |
| continue; |
| lpfc_sli_issue_abort_iotag(phba, pring, iocb); |
| } |
| |
| pring->flag = prev_pring_flag; |
| } |
| |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| |
| /* Cancel all the IOCBs from the completions list */ |
| lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, |
| IOERR_SLI_DOWN); |
| return 1; |
| } |
| |
| /** |
| * lpfc_sli_hba_down - Resource cleanup function for the HBA |
| * @phba: Pointer to HBA context object. |
| * |
| * This function cleans up all iocb, buffers, mailbox commands |
| * while shutting down the HBA. This function is called with no |
| * lock held and always returns 1. |
| * This function does the following to cleanup driver resources: |
| * - Free discovery resources for each virtual port |
| * - Cleanup any pending fabric iocbs |
| * - Iterate through the iocb txq and free each entry |
| * in the list. |
| * - Free up any buffer posted to the HBA |
| * - Free mailbox commands in the mailbox queue. |
| **/ |
| int |
| lpfc_sli_hba_down(struct lpfc_hba *phba) |
| { |
| LIST_HEAD(completions); |
| struct lpfc_sli *psli = &phba->sli; |
| struct lpfc_sli_ring *pring; |
| struct lpfc_dmabuf *buf_ptr; |
| unsigned long flags = 0; |
| int i; |
| |
| /* Shutdown the mailbox command sub-system */ |
| lpfc_sli_mbox_sys_shutdown(phba); |
| |
| lpfc_hba_down_prep(phba); |
| |
| lpfc_fabric_abort_hba(phba); |
| |
| spin_lock_irqsave(&phba->hbalock, flags); |
| for (i = 0; i < psli->num_rings; i++) { |
| pring = &psli->ring[i]; |
| /* Only slow rings */ |
| if (pring->ringno == LPFC_ELS_RING) { |
| pring->flag |= LPFC_DEFERRED_RING_EVENT; |
| /* Set the lpfc data pending flag */ |
| set_bit(LPFC_DATA_READY, &phba->data_flags); |
| } |
| |
| /* |
| * Error everything on the txq since these iocbs have not been |
| * given to the FW yet. |
| */ |
| list_splice_init(&pring->txq, &completions); |
| pring->txq_cnt = 0; |
| |
| } |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| |
| /* Cancel all the IOCBs from the completions list */ |
| lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, |
| IOERR_SLI_DOWN); |
| |
| spin_lock_irqsave(&phba->hbalock, flags); |
| list_splice_init(&phba->elsbuf, &completions); |
| phba->elsbuf_cnt = 0; |
| phba->elsbuf_prev_cnt = 0; |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| |
| while (!list_empty(&completions)) { |
| list_remove_head(&completions, buf_ptr, |
| struct lpfc_dmabuf, list); |
| lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); |
| kfree(buf_ptr); |
| } |
| |
| /* Return any active mbox cmds */ |
| del_timer_sync(&psli->mbox_tmo); |
| |
| spin_lock_irqsave(&phba->pport->work_port_lock, flags); |
| phba->pport->work_port_events &= ~WORKER_MBOX_TMO; |
| spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
| |
| return 1; |
| } |
| |
| /** |
| * lpfc_sli4_hba_down - PCI function resource cleanup for the SLI4 HBA |
| * @phba: Pointer to HBA context object. |
| * |
| * This function cleans up all queues, iocb, buffers, mailbox commands while |
| * shutting down the SLI4 HBA FCoE function. This function is called with no |
| * lock held and always returns 1. |
| * |
| * This function does the following to cleanup driver FCoE function resources: |
| * - Free discovery resources for each virtual port |
| * - Cleanup any pending fabric iocbs |
| * - Iterate through the iocb txq and free each entry in the list. |
| * - Free up any buffer posted to the HBA. |
| * - Clean up all the queue entries: WQ, RQ, MQ, EQ, CQ, etc. |
| * - Free mailbox commands in the mailbox queue. |
| **/ |
| int |
| lpfc_sli4_hba_down(struct lpfc_hba *phba) |
| { |
| /* Stop the SLI4 device port */ |
| lpfc_stop_port(phba); |
| |
| /* Tear down the queues in the HBA */ |
| lpfc_sli4_queue_unset(phba); |
| |
| /* unregister default FCFI from the HBA */ |
| lpfc_sli4_fcfi_unreg(phba, phba->fcf.fcfi); |
| |
| return 1; |
| } |
| |
| /** |
| * lpfc_sli_pcimem_bcopy - SLI memory copy function |
| * @srcp: Source memory pointer. |
| * @destp: Destination memory pointer. |
| * @cnt: Number of words required to be copied. |
| * |
| * This function is used for copying data between driver memory |
| * and the SLI memory. This function also changes the endianness |
| * of each word if native endianness is different from SLI |
| * endianness. This function can be called with or without |
| * lock. |
| **/ |
| void |
| lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt) |
| { |
| uint32_t *src = srcp; |
| uint32_t *dest = destp; |
| uint32_t ldata; |
| int i; |
| |
| for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) { |
| ldata = *src; |
| ldata = le32_to_cpu(ldata); |
| *dest = ldata; |
| src++; |
| dest++; |
| } |
| } |
| |
| |
| /** |
| * lpfc_sli_bemem_bcopy - SLI memory copy function |
| * @srcp: Source memory pointer. |
| * @destp: Destination memory pointer. |
| * @cnt: Number of words required to be copied. |
| * |
| * This function is used for copying data between a data structure |
| * with big endian representation to local endianness. |
| * This function can be called with or without lock. |
| **/ |
| void |
| lpfc_sli_bemem_bcopy(void *srcp, void *destp, uint32_t cnt) |
| { |
| uint32_t *src = srcp; |
| uint32_t *dest = destp; |
| uint32_t ldata; |
| int i; |
| |
| for (i = 0; i < (int)cnt; i += sizeof(uint32_t)) { |
| ldata = *src; |
| ldata = be32_to_cpu(ldata); |
| *dest = ldata; |
| src++; |
| dest++; |
| } |
| } |
| |
| /** |
| * lpfc_sli_ringpostbuf_put - Function to add a buffer to postbufq |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @mp: Pointer to driver buffer object. |
| * |
| * This function is called with no lock held. |
| * It always return zero after adding the buffer to the postbufq |
| * buffer list. |
| **/ |
| int |
| lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| struct lpfc_dmabuf *mp) |
| { |
| /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up |
| later */ |
| spin_lock_irq(&phba->hbalock); |
| list_add_tail(&mp->list, &pring->postbufq); |
| pring->postbufq_cnt++; |
| spin_unlock_irq(&phba->hbalock); |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_get_buffer_tag - allocates a tag for a CMD_QUE_XRI64_CX buffer |
| * @phba: Pointer to HBA context object. |
| * |
| * When HBQ is enabled, buffers are searched based on tags. This function |
| * allocates a tag for buffer posted using CMD_QUE_XRI64_CX iocb. The |
| * tag is bit wise or-ed with QUE_BUFTAG_BIT to make sure that the tag |
| * does not conflict with tags of buffer posted for unsolicited events. |
| * The function returns the allocated tag. The function is called with |
| * no locks held. |
| **/ |
| uint32_t |
| lpfc_sli_get_buffer_tag(struct lpfc_hba *phba) |
| { |
| spin_lock_irq(&phba->hbalock); |
| phba->buffer_tag_count++; |
| /* |
| * Always set the QUE_BUFTAG_BIT to distiguish between |
| * a tag assigned by HBQ. |
| */ |
| phba->buffer_tag_count |= QUE_BUFTAG_BIT; |
| spin_unlock_irq(&phba->hbalock); |
| return phba->buffer_tag_count; |
| } |
| |
| /** |
| * lpfc_sli_ring_taggedbuf_get - find HBQ buffer associated with given tag |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @tag: Buffer tag. |
| * |
| * Buffers posted using CMD_QUE_XRI64_CX iocb are in pring->postbufq |
| * list. After HBA DMA data to these buffers, CMD_IOCB_RET_XRI64_CX |
| * iocb is posted to the response ring with the tag of the buffer. |
| * This function searches the pring->postbufq list using the tag |
| * to find buffer associated with CMD_IOCB_RET_XRI64_CX |
| * iocb. If the buffer is found then lpfc_dmabuf object of the |
| * buffer is returned to the caller else NULL is returned. |
| * This function is called with no lock held. |
| **/ |
| struct lpfc_dmabuf * |
| lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| uint32_t tag) |
| { |
| struct lpfc_dmabuf *mp, *next_mp; |
| struct list_head *slp = &pring->postbufq; |
| |
| /* Search postbufq, from the begining, looking for a match on tag */ |
| spin_lock_irq(&phba->hbalock); |
| list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { |
| if (mp->buffer_tag == tag) { |
| list_del_init(&mp->list); |
| pring->postbufq_cnt--; |
| spin_unlock_irq(&phba->hbalock); |
| return mp; |
| } |
| } |
| |
| spin_unlock_irq(&phba->hbalock); |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0402 Cannot find virtual addr for buffer tag on " |
| "ring %d Data x%lx x%p x%p x%x\n", |
| pring->ringno, (unsigned long) tag, |
| slp->next, slp->prev, pring->postbufq_cnt); |
| |
| return NULL; |
| } |
| |
| /** |
| * lpfc_sli_ringpostbuf_get - search buffers for unsolicited CT and ELS events |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @phys: DMA address of the buffer. |
| * |
| * This function searches the buffer list using the dma_address |
| * of unsolicited event to find the driver's lpfc_dmabuf object |
| * corresponding to the dma_address. The function returns the |
| * lpfc_dmabuf object if a buffer is found else it returns NULL. |
| * This function is called by the ct and els unsolicited event |
| * handlers to get the buffer associated with the unsolicited |
| * event. |
| * |
| * This function is called with no lock held. |
| **/ |
| struct lpfc_dmabuf * |
| lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| dma_addr_t phys) |
| { |
| struct lpfc_dmabuf *mp, *next_mp; |
| struct list_head *slp = &pring->postbufq; |
| |
| /* Search postbufq, from the begining, looking for a match on phys */ |
| spin_lock_irq(&phba->hbalock); |
| list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { |
| if (mp->phys == phys) { |
| list_del_init(&mp->list); |
| pring->postbufq_cnt--; |
| spin_unlock_irq(&phba->hbalock); |
| return mp; |
| } |
| } |
| |
| spin_unlock_irq(&phba->hbalock); |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0410 Cannot find virtual addr for mapped buf on " |
| "ring %d Data x%llx x%p x%p x%x\n", |
| pring->ringno, (unsigned long long)phys, |
| slp->next, slp->prev, pring->postbufq_cnt); |
| return NULL; |
| } |
| |
| /** |
| * lpfc_sli_abort_els_cmpl - Completion handler for the els abort iocbs |
| * @phba: Pointer to HBA context object. |
| * @cmdiocb: Pointer to driver command iocb object. |
| * @rspiocb: Pointer to driver response iocb object. |
| * |
| * This function is the completion handler for the abort iocbs for |
| * ELS commands. This function is called from the ELS ring event |
| * handler with no lock held. This function frees memory resources |
| * associated with the abort iocb. |
| **/ |
| static void |
| lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, |
| struct lpfc_iocbq *rspiocb) |
| { |
| IOCB_t *irsp = &rspiocb->iocb; |
| uint16_t abort_iotag, abort_context; |
| struct lpfc_iocbq *abort_iocb; |
| struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; |
| |
| abort_iocb = NULL; |
| |
| if (irsp->ulpStatus) { |
| abort_context = cmdiocb->iocb.un.acxri.abortContextTag; |
| abort_iotag = cmdiocb->iocb.un.acxri.abortIoTag; |
| |
| spin_lock_irq(&phba->hbalock); |
| if (phba->sli_rev < LPFC_SLI_REV4) { |
| if (abort_iotag != 0 && |
| abort_iotag <= phba->sli.last_iotag) |
| abort_iocb = |
| phba->sli.iocbq_lookup[abort_iotag]; |
| } else |
| /* For sli4 the abort_tag is the XRI, |
| * so the abort routine puts the iotag of the iocb |
| * being aborted in the context field of the abort |
| * IOCB. |
| */ |
| abort_iocb = phba->sli.iocbq_lookup[abort_context]; |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_SLI, |
| "0327 Cannot abort els iocb %p " |
| "with tag %x context %x, abort status %x, " |
| "abort code %x\n", |
| abort_iocb, abort_iotag, abort_context, |
| irsp->ulpStatus, irsp->un.ulpWord[4]); |
| |
| /* |
| * If the iocb is not found in Firmware queue the iocb |
| * might have completed already. Do not free it again. |
| */ |
| if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) { |
| if (irsp->un.ulpWord[4] != IOERR_NO_XRI) { |
| spin_unlock_irq(&phba->hbalock); |
| lpfc_sli_release_iocbq(phba, cmdiocb); |
| return; |
| } |
| /* For SLI4 the ulpContext field for abort IOCB |
| * holds the iotag of the IOCB being aborted so |
| * the local abort_context needs to be reset to |
| * match the aborted IOCBs ulpContext. |
| */ |
| if (abort_iocb && phba->sli_rev == LPFC_SLI_REV4) |
| abort_context = abort_iocb->iocb.ulpContext; |
| } |
| /* |
| * make sure we have the right iocbq before taking it |
| * off the txcmplq and try to call completion routine. |
| */ |
| if (!abort_iocb || |
| abort_iocb->iocb.ulpContext != abort_context || |
| (abort_iocb->iocb_flag & LPFC_DRIVER_ABORTED) == 0) |
| spin_unlock_irq(&phba->hbalock); |
| else if (phba->sli_rev < LPFC_SLI_REV4) { |
| /* |
| * leave the SLI4 aborted command on the txcmplq |
| * list and the command complete WCQE's XB bit |
| * will tell whether the SGL (XRI) can be released |
| * immediately or to the aborted SGL list for the |
| * following abort XRI from the HBA. |
| */ |
| list_del_init(&abort_iocb->list); |
| pring->txcmplq_cnt--; |
| spin_unlock_irq(&phba->hbalock); |
| |
| /* Firmware could still be in progress of DMAing |
| * payload, so don't free data buffer till after |
| * a hbeat. |
| */ |
| spin_lock_irq(&phba->hbalock); |
| abort_iocb->iocb_flag |= LPFC_DELAY_MEM_FREE; |
| abort_iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED; |
| spin_unlock_irq(&phba->hbalock); |
| |
| abort_iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT; |
| abort_iocb->iocb.un.ulpWord[4] = IOERR_ABORT_REQUESTED; |
| (abort_iocb->iocb_cmpl)(phba, abort_iocb, abort_iocb); |
| } |
| } |
| |
| lpfc_sli_release_iocbq(phba, cmdiocb); |
| return; |
| } |
| |
| /** |
| * lpfc_ignore_els_cmpl - Completion handler for aborted ELS command |
| * @phba: Pointer to HBA context object. |
| * @cmdiocb: Pointer to driver command iocb object. |
| * @rspiocb: Pointer to driver response iocb object. |
| * |
| * The function is called from SLI ring event handler with no |
| * lock held. This function is the completion handler for ELS commands |
| * which are aborted. The function frees memory resources used for |
| * the aborted ELS commands. |
| **/ |
| static void |
| lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, |
| struct lpfc_iocbq *rspiocb) |
| { |
| IOCB_t *irsp = &rspiocb->iocb; |
| |
| /* ELS cmd tag <ulpIoTag> completes */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_ELS, |
| "0139 Ignoring ELS cmd tag x%x completion Data: " |
| "x%x x%x x%x\n", |
| irsp->ulpIoTag, irsp->ulpStatus, |
| irsp->un.ulpWord[4], irsp->ulpTimeout); |
| if (cmdiocb->iocb.ulpCommand == CMD_GEN_REQUEST64_CR) |
| lpfc_ct_free_iocb(phba, cmdiocb); |
| else |
| lpfc_els_free_iocb(phba, cmdiocb); |
| return; |
| } |
| |
| /** |
| * lpfc_sli_issue_abort_iotag - Abort function for a command iocb |
| * @phba: Pointer to HBA context object. |
| * @pring: Pointer to driver SLI ring object. |
| * @cmdiocb: Pointer to driver command iocb object. |
| * |
| * This function issues an abort iocb for the provided command |
| * iocb. This function is called with hbalock held. |
| * The function returns 0 when it fails due to memory allocation |
| * failure or when the command iocb is an abort request. |
| **/ |
| int |
| lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq *cmdiocb) |
| { |
| struct lpfc_vport *vport = cmdiocb->vport; |
| struct lpfc_iocbq *abtsiocbp; |
| IOCB_t *icmd = NULL; |
| IOCB_t *iabt = NULL; |
| int retval = IOCB_ERROR; |
| |
| /* |
| * There are certain command types we don't want to abort. And we |
| * don't want to abort commands that are already in the process of |
| * being aborted. |
| */ |
| icmd = &cmdiocb->iocb; |
| if (icmd->ulpCommand == CMD_ABORT_XRI_CN || |
| icmd->ulpCommand == CMD_CLOSE_XRI_CN || |
| (cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0) |
| return 0; |
| |
| /* If we're unloading, don't abort iocb on the ELS ring, but change the |
| * callback so that nothing happens when it finishes. |
| */ |
| if ((vport->load_flag & FC_UNLOADING) && |
| (pring->ringno == LPFC_ELS_RING)) { |
| if (cmdiocb->iocb_flag & LPFC_IO_FABRIC) |
| cmdiocb->fabric_iocb_cmpl = lpfc_ignore_els_cmpl; |
| else |
| cmdiocb->iocb_cmpl = lpfc_ignore_els_cmpl; |
| goto abort_iotag_exit; |
| } |
| |
| /* issue ABTS for this IOCB based on iotag */ |
| abtsiocbp = __lpfc_sli_get_iocbq(phba); |
| if (abtsiocbp == NULL) |
| return 0; |
| |
| /* This signals the response to set the correct status |
| * before calling the completion handler |
| */ |
| cmdiocb->iocb_flag |= LPFC_DRIVER_ABORTED; |
| |
| iabt = &abtsiocbp->iocb; |
| iabt->un.acxri.abortType = ABORT_TYPE_ABTS; |
| iabt->un.acxri.abortContextTag = icmd->ulpContext; |
| if (phba->sli_rev == LPFC_SLI_REV4) { |
| iabt->un.acxri.abortIoTag = cmdiocb->sli4_xritag; |
| iabt->un.acxri.abortContextTag = cmdiocb->iotag; |
| } |
| else |
| iabt->un.acxri.abortIoTag = icmd->ulpIoTag; |
| iabt->ulpLe = 1; |
| iabt->ulpClass = icmd->ulpClass; |
| |
| /* ABTS WQE must go to the same WQ as the WQE to be aborted */ |
| abtsiocbp->fcp_wqidx = cmdiocb->fcp_wqidx; |
| if (cmdiocb->iocb_flag & LPFC_IO_FCP) |
| abtsiocbp->iocb_flag |= LPFC_USE_FCPWQIDX; |
| |
| if (phba->link_state >= LPFC_LINK_UP) |
| iabt->ulpCommand = CMD_ABORT_XRI_CN; |
| else |
| iabt->ulpCommand = CMD_CLOSE_XRI_CN; |
| |
| abtsiocbp->iocb_cmpl = lpfc_sli_abort_els_cmpl; |
| |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, |
| "0339 Abort xri x%x, original iotag x%x, " |
| "abort cmd iotag x%x\n", |
| iabt->un.acxri.abortContextTag, |
| iabt->un.acxri.abortIoTag, abtsiocbp->iotag); |
| retval = __lpfc_sli_issue_iocb(phba, pring->ringno, abtsiocbp, 0); |
| |
| if (retval) |
| __lpfc_sli_release_iocbq(phba, abtsiocbp); |
| abort_iotag_exit: |
| /* |
| * Caller to this routine should check for IOCB_ERROR |
| * and handle it properly. This routine no longer removes |
| * iocb off txcmplq and call compl in case of IOCB_ERROR. |
| */ |
| return retval; |
| } |
| |
| /** |
| * lpfc_sli_validate_fcp_iocb - find commands associated with a vport or LUN |
| * @iocbq: Pointer to driver iocb object. |
| * @vport: Pointer to driver virtual port object. |
| * @tgt_id: SCSI ID of the target. |
| * @lun_id: LUN ID of the scsi device. |
| * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST |
| * |
| * This function acts as an iocb filter for functions which abort or count |
| * all FCP iocbs pending on a lun/SCSI target/SCSI host. It will return |
| * 0 if the filtering criteria is met for the given iocb and will return |
| * 1 if the filtering criteria is not met. |
| * If ctx_cmd == LPFC_CTX_LUN, the function returns 0 only if the |
| * given iocb is for the SCSI device specified by vport, tgt_id and |
| * lun_id parameter. |
| * If ctx_cmd == LPFC_CTX_TGT, the function returns 0 only if the |
| * given iocb is for the SCSI target specified by vport and tgt_id |
| * parameters. |
| * If ctx_cmd == LPFC_CTX_HOST, the function returns 0 only if the |
| * given iocb is for the SCSI host associated with the given vport. |
| * This function is called with no locks held. |
| **/ |
| static int |
| lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport, |
| uint16_t tgt_id, uint64_t lun_id, |
| lpfc_ctx_cmd ctx_cmd) |
| { |
| struct lpfc_scsi_buf *lpfc_cmd; |
| int rc = 1; |
| |
| if (!(iocbq->iocb_flag & LPFC_IO_FCP)) |
| return rc; |
| |
| if (iocbq->vport != vport) |
| return rc; |
| |
| lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq); |
| |
| if (lpfc_cmd->pCmd == NULL) |
| return rc; |
| |
| switch (ctx_cmd) { |
| case LPFC_CTX_LUN: |
| if ((lpfc_cmd->rdata->pnode) && |
| (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id) && |
| (scsilun_to_int(&lpfc_cmd->fcp_cmnd->fcp_lun) == lun_id)) |
| rc = 0; |
| break; |
| case LPFC_CTX_TGT: |
| if ((lpfc_cmd->rdata->pnode) && |
| (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id)) |
| rc = 0; |
| break; |
| case LPFC_CTX_HOST: |
| rc = 0; |
| break; |
| default: |
| printk(KERN_ERR "%s: Unknown context cmd type, value %d\n", |
| __func__, ctx_cmd); |
| break; |
| } |
| |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli_sum_iocb - Function to count the number of FCP iocbs pending |
| * @vport: Pointer to virtual port. |
| * @tgt_id: SCSI ID of the target. |
| * @lun_id: LUN ID of the scsi device. |
| * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST. |
| * |
| * This function returns number of FCP commands pending for the vport. |
| * When ctx_cmd == LPFC_CTX_LUN, the function returns number of FCP |
| * commands pending on the vport associated with SCSI device specified |
| * by tgt_id and lun_id parameters. |
| * When ctx_cmd == LPFC_CTX_TGT, the function returns number of FCP |
| * commands pending on the vport associated with SCSI target specified |
| * by tgt_id parameter. |
| * When ctx_cmd == LPFC_CTX_HOST, the function returns number of FCP |
| * commands pending on the vport. |
| * This function returns the number of iocbs which satisfy the filter. |
| * This function is called without any lock held. |
| **/ |
| int |
| lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id, |
| lpfc_ctx_cmd ctx_cmd) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| struct lpfc_iocbq *iocbq; |
| int sum, i; |
| |
| for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) { |
| iocbq = phba->sli.iocbq_lookup[i]; |
| |
| if (lpfc_sli_validate_fcp_iocb (iocbq, vport, tgt_id, lun_id, |
| ctx_cmd) == 0) |
| sum++; |
| } |
| |
| return sum; |
| } |
| |
| /** |
| * lpfc_sli_abort_fcp_cmpl - Completion handler function for aborted FCP IOCBs |
| * @phba: Pointer to HBA context object |
| * @cmdiocb: Pointer to command iocb object. |
| * @rspiocb: Pointer to response iocb object. |
| * |
| * This function is called when an aborted FCP iocb completes. This |
| * function is called by the ring event handler with no lock held. |
| * This function frees the iocb. |
| **/ |
| void |
| lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, |
| struct lpfc_iocbq *rspiocb) |
| { |
| lpfc_sli_release_iocbq(phba, cmdiocb); |
| return; |
| } |
| |
| /** |
| * lpfc_sli_abort_iocb - issue abort for all commands on a host/target/LUN |
| * @vport: Pointer to virtual port. |
| * @pring: Pointer to driver SLI ring object. |
| * @tgt_id: SCSI ID of the target. |
| * @lun_id: LUN ID of the scsi device. |
| * @abort_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST. |
| * |
| * This function sends an abort command for every SCSI command |
| * associated with the given virtual port pending on the ring |
| * filtered by lpfc_sli_validate_fcp_iocb function. |
| * When abort_cmd == LPFC_CTX_LUN, the function sends abort only to the |
| * FCP iocbs associated with lun specified by tgt_id and lun_id |
| * parameters |
| * When abort_cmd == LPFC_CTX_TGT, the function sends abort only to the |
| * FCP iocbs associated with SCSI target specified by tgt_id parameter. |
| * When abort_cmd == LPFC_CTX_HOST, the function sends abort to all |
| * FCP iocbs associated with virtual port. |
| * This function returns number of iocbs it failed to abort. |
| * This function is called with no locks held. |
| **/ |
| int |
| lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring, |
| uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd abort_cmd) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| struct lpfc_iocbq *iocbq; |
| struct lpfc_iocbq *abtsiocb; |
| IOCB_t *cmd = NULL; |
| int errcnt = 0, ret_val = 0; |
| int i; |
| |
| for (i = 1; i <= phba->sli.last_iotag; i++) { |
| iocbq = phba->sli.iocbq_lookup[i]; |
| |
| if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id, |
| abort_cmd) != 0) |
| continue; |
| |
| /* issue ABTS for this IOCB based on iotag */ |
| abtsiocb = lpfc_sli_get_iocbq(phba); |
| if (abtsiocb == NULL) { |
| errcnt++; |
| continue; |
| } |
| |
| cmd = &iocbq->iocb; |
| abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS; |
| abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext; |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| abtsiocb->iocb.un.acxri.abortIoTag = iocbq->sli4_xritag; |
| else |
| abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag; |
| abtsiocb->iocb.ulpLe = 1; |
| abtsiocb->iocb.ulpClass = cmd->ulpClass; |
| abtsiocb->vport = phba->pport; |
| |
| /* ABTS WQE must go to the same WQ as the WQE to be aborted */ |
| abtsiocb->fcp_wqidx = iocbq->fcp_wqidx; |
| if (iocbq->iocb_flag & LPFC_IO_FCP) |
| abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX; |
| |
| if (lpfc_is_link_up(phba)) |
| abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN; |
| else |
| abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN; |
| |
| /* Setup callback routine and issue the command. */ |
| abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
| ret_val = lpfc_sli_issue_iocb(phba, pring->ringno, |
| abtsiocb, 0); |
| if (ret_val == IOCB_ERROR) { |
| lpfc_sli_release_iocbq(phba, abtsiocb); |
| errcnt++; |
| continue; |
| } |
| } |
| |
| return errcnt; |
| } |
| |
| /** |
| * lpfc_sli_wake_iocb_wait - lpfc_sli_issue_iocb_wait's completion handler |
| * @phba: Pointer to HBA context object. |
| * @cmdiocbq: Pointer to command iocb. |
| * @rspiocbq: Pointer to response iocb. |
| * |
| * This function is the completion handler for iocbs issued using |
| * lpfc_sli_issue_iocb_wait function. This function is called by the |
| * ring event handler function without any lock held. This function |
| * can be called from both worker thread context and interrupt |
| * context. This function also can be called from other thread which |
| * cleans up the SLI layer objects. |
| * This function copy the contents of the response iocb to the |
| * response iocb memory object provided by the caller of |
| * lpfc_sli_issue_iocb_wait and then wakes up the thread which |
| * sleeps for the iocb completion. |
| **/ |
| static void |
| lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba, |
| struct lpfc_iocbq *cmdiocbq, |
| struct lpfc_iocbq *rspiocbq) |
| { |
| wait_queue_head_t *pdone_q; |
| unsigned long iflags; |
| |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| cmdiocbq->iocb_flag |= LPFC_IO_WAKE; |
| if (cmdiocbq->context2 && rspiocbq) |
| memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb, |
| &rspiocbq->iocb, sizeof(IOCB_t)); |
| |
| pdone_q = cmdiocbq->context_un.wait_queue; |
| if (pdone_q) |
| wake_up(pdone_q); |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| return; |
| } |
| |
| /** |
| * lpfc_chk_iocb_flg - Test IOCB flag with lock held. |
| * @phba: Pointer to HBA context object.. |
| * @piocbq: Pointer to command iocb. |
| * @flag: Flag to test. |
| * |
| * This routine grabs the hbalock and then test the iocb_flag to |
| * see if the passed in flag is set. |
| * Returns: |
| * 1 if flag is set. |
| * 0 if flag is not set. |
| **/ |
| static int |
| lpfc_chk_iocb_flg(struct lpfc_hba *phba, |
| struct lpfc_iocbq *piocbq, uint32_t flag) |
| { |
| unsigned long iflags; |
| int ret; |
| |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| ret = piocbq->iocb_flag & flag; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| return ret; |
| |
| } |
| |
| /** |
| * lpfc_sli_issue_iocb_wait - Synchronous function to issue iocb commands |
| * @phba: Pointer to HBA context object.. |
| * @pring: Pointer to sli ring. |
| * @piocb: Pointer to command iocb. |
| * @prspiocbq: Pointer to response iocb. |
| * @timeout: Timeout in number of seconds. |
| * |
| * This function issues the iocb to firmware and waits for the |
| * iocb to complete. If the iocb command is not |
| * completed within timeout seconds, it returns IOCB_TIMEDOUT. |
| * Caller should not free the iocb resources if this function |
| * returns IOCB_TIMEDOUT. |
| * The function waits for the iocb completion using an |
| * non-interruptible wait. |
| * This function will sleep while waiting for iocb completion. |
| * So, this function should not be called from any context which |
| * does not allow sleeping. Due to the same reason, this function |
| * cannot be called with interrupt disabled. |
| * This function assumes that the iocb completions occur while |
| * this function sleep. So, this function cannot be called from |
| * the thread which process iocb completion for this ring. |
| * This function clears the iocb_flag of the iocb object before |
| * issuing the iocb and the iocb completion handler sets this |
| * flag and wakes this thread when the iocb completes. |
| * The contents of the response iocb will be copied to prspiocbq |
| * by the completion handler when the command completes. |
| * This function returns IOCB_SUCCESS when success. |
| * This function is called with no lock held. |
| **/ |
| int |
| lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba, |
| uint32_t ring_number, |
| struct lpfc_iocbq *piocb, |
| struct lpfc_iocbq *prspiocbq, |
| uint32_t timeout) |
| { |
| DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q); |
| long timeleft, timeout_req = 0; |
| int retval = IOCB_SUCCESS; |
| uint32_t creg_val; |
| |
| /* |
| * If the caller has provided a response iocbq buffer, then context2 |
| * is NULL or its an error. |
| */ |
| if (prspiocbq) { |
| if (piocb->context2) |
| return IOCB_ERROR; |
| piocb->context2 = prspiocbq; |
| } |
| |
| piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait; |
| piocb->context_un.wait_queue = &done_q; |
| piocb->iocb_flag &= ~LPFC_IO_WAKE; |
| |
| if (phba->cfg_poll & DISABLE_FCP_RING_INT) { |
| creg_val = readl(phba->HCregaddr); |
| creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); |
| writel(creg_val, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| } |
| |
| retval = lpfc_sli_issue_iocb(phba, ring_number, piocb, 0); |
| if (retval == IOCB_SUCCESS) { |
| timeout_req = timeout * HZ; |
| timeleft = wait_event_timeout(done_q, |
| lpfc_chk_iocb_flg(phba, piocb, LPFC_IO_WAKE), |
| timeout_req); |
| |
| if (piocb->iocb_flag & LPFC_IO_WAKE) { |
| lpfc_printf_log(phba, KERN_INFO, LOG_SLI, |
| "0331 IOCB wake signaled\n"); |
| } else if (timeleft == 0) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0338 IOCB wait timeout error - no " |
| "wake response Data x%x\n", timeout); |
| retval = IOCB_TIMEDOUT; |
| } else { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0330 IOCB wake NOT set, " |
| "Data x%x x%lx\n", |
| timeout, (timeleft / jiffies)); |
| retval = IOCB_TIMEDOUT; |
| } |
| } else { |
| lpfc_printf_log(phba, KERN_INFO, LOG_SLI, |
| "0332 IOCB wait issue failed, Data x%x\n", |
| retval); |
| retval = IOCB_ERROR; |
| } |
| |
| if (phba->cfg_poll & DISABLE_FCP_RING_INT) { |
| creg_val = readl(phba->HCregaddr); |
| creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING); |
| writel(creg_val, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| } |
| |
| if (prspiocbq) |
| piocb->context2 = NULL; |
| |
| piocb->context_un.wait_queue = NULL; |
| piocb->iocb_cmpl = NULL; |
| return retval; |
| } |
| |
| /** |
| * lpfc_sli_issue_mbox_wait - Synchronous function to issue mailbox |
| * @phba: Pointer to HBA context object. |
| * @pmboxq: Pointer to driver mailbox object. |
| * @timeout: Timeout in number of seconds. |
| * |
| * This function issues the mailbox to firmware and waits for the |
| * mailbox command to complete. If the mailbox command is not |
| * completed within timeout seconds, it returns MBX_TIMEOUT. |
| * The function waits for the mailbox completion using an |
| * interruptible wait. If the thread is woken up due to a |
| * signal, MBX_TIMEOUT error is returned to the caller. Caller |
| * should not free the mailbox resources, if this function returns |
| * MBX_TIMEOUT. |
| * This function will sleep while waiting for mailbox completion. |
| * So, this function should not be called from any context which |
| * does not allow sleeping. Due to the same reason, this function |
| * cannot be called with interrupt disabled. |
| * This function assumes that the mailbox completion occurs while |
| * this function sleep. So, this function cannot be called from |
| * the worker thread which processes mailbox completion. |
| * This function is called in the context of HBA management |
| * applications. |
| * This function returns MBX_SUCCESS when successful. |
| * This function is called with no lock held. |
| **/ |
| int |
| lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq, |
| uint32_t timeout) |
| { |
| DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q); |
| int retval; |
| unsigned long flag; |
| |
| /* The caller must leave context1 empty. */ |
| if (pmboxq->context1) |
| return MBX_NOT_FINISHED; |
| |
| pmboxq->mbox_flag &= ~LPFC_MBX_WAKE; |
| /* setup wake call as IOCB callback */ |
| pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait; |
| /* setup context field to pass wait_queue pointer to wake function */ |
| pmboxq->context1 = &done_q; |
| |
| /* now issue the command */ |
| retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); |
| |
| if (retval == MBX_BUSY || retval == MBX_SUCCESS) { |
| wait_event_interruptible_timeout(done_q, |
| pmboxq->mbox_flag & LPFC_MBX_WAKE, |
| timeout * HZ); |
| |
| spin_lock_irqsave(&phba->hbalock, flag); |
| pmboxq->context1 = NULL; |
| /* |
| * if LPFC_MBX_WAKE flag is set the mailbox is completed |
| * else do not free the resources. |
| */ |
| if (pmboxq->mbox_flag & LPFC_MBX_WAKE) |
| retval = MBX_SUCCESS; |
| else { |
| retval = MBX_TIMEOUT; |
| pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| } |
| spin_unlock_irqrestore(&phba->hbalock, flag); |
| } |
| |
| return retval; |
| } |
| |
| /** |
| * lpfc_sli_mbox_sys_shutdown - shutdown mailbox command sub-system |
| * @phba: Pointer to HBA context. |
| * |
| * This function is called to shutdown the driver's mailbox sub-system. |
| * It first marks the mailbox sub-system is in a block state to prevent |
| * the asynchronous mailbox command from issued off the pending mailbox |
| * command queue. If the mailbox command sub-system shutdown is due to |
| * HBA error conditions such as EEH or ERATT, this routine shall invoke |
| * the mailbox sub-system flush routine to forcefully bring down the |
| * mailbox sub-system. Otherwise, if it is due to normal condition (such |
| * as with offline or HBA function reset), this routine will wait for the |
| * outstanding mailbox command to complete before invoking the mailbox |
| * sub-system flush routine to gracefully bring down mailbox sub-system. |
| **/ |
| void |
| lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli = &phba->sli; |
| uint8_t actcmd = MBX_HEARTBEAT; |
| unsigned long timeout; |
| |
| spin_lock_irq(&phba->hbalock); |
| psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK; |
| spin_unlock_irq(&phba->hbalock); |
| |
| if (psli->sli_flag & LPFC_SLI_ACTIVE) { |
| spin_lock_irq(&phba->hbalock); |
| if (phba->sli.mbox_active) |
| actcmd = phba->sli.mbox_active->u.mb.mbxCommand; |
| spin_unlock_irq(&phba->hbalock); |
| /* Determine how long we might wait for the active mailbox |
| * command to be gracefully completed by firmware. |
| */ |
| timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) * |
| 1000) + jiffies; |
| while (phba->sli.mbox_active) { |
| /* Check active mailbox complete status every 2ms */ |
| msleep(2); |
| if (time_after(jiffies, timeout)) |
| /* Timeout, let the mailbox flush routine to |
| * forcefully release active mailbox command |
| */ |
| break; |
| } |
| } |
| lpfc_sli_mbox_sys_flush(phba); |
| } |
| |
| /** |
| * lpfc_sli_eratt_read - read sli-3 error attention events |
| * @phba: Pointer to HBA context. |
| * |
| * This function is called to read the SLI3 device error attention registers |
| * for possible error attention events. The caller must hold the hostlock |
| * with spin_lock_irq(). |
| * |
| * This fucntion returns 1 when there is Error Attention in the Host Attention |
| * Register and returns 0 otherwise. |
| **/ |
| static int |
| lpfc_sli_eratt_read(struct lpfc_hba *phba) |
| { |
| uint32_t ha_copy; |
| |
| /* Read chip Host Attention (HA) register */ |
| ha_copy = readl(phba->HAregaddr); |
| if (ha_copy & HA_ERATT) { |
| /* Read host status register to retrieve error event */ |
| lpfc_sli_read_hs(phba); |
| |
| /* Check if there is a deferred error condition is active */ |
| if ((HS_FFER1 & phba->work_hs) && |
| ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 | |
| HS_FFER6 | HS_FFER7) & phba->work_hs)) { |
| phba->hba_flag |= DEFER_ERATT; |
| /* Clear all interrupt enable conditions */ |
| writel(0, phba->HCregaddr); |
| readl(phba->HCregaddr); |
| } |
| |
| /* Set the driver HA work bitmap */ |
| phba->work_ha |= HA_ERATT; |
| /* Indicate polling handles this ERATT */ |
| phba->hba_flag |= HBA_ERATT_HANDLED; |
| return 1; |
| } |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli4_eratt_read - read sli-4 error attention events |
| * @phba: Pointer to HBA context. |
| * |
| * This function is called to read the SLI4 device error attention registers |
| * for possible error attention events. The caller must hold the hostlock |
| * with spin_lock_irq(). |
| * |
| * This fucntion returns 1 when there is Error Attention in the Host Attention |
| * Register and returns 0 otherwise. |
| **/ |
| static int |
| lpfc_sli4_eratt_read(struct lpfc_hba *phba) |
| { |
| uint32_t uerr_sta_hi, uerr_sta_lo; |
| |
| /* For now, use the SLI4 device internal unrecoverable error |
| * registers for error attention. This can be changed later. |
| */ |
| uerr_sta_lo = readl(phba->sli4_hba.UERRLOregaddr); |
| uerr_sta_hi = readl(phba->sli4_hba.UERRHIregaddr); |
| if ((~phba->sli4_hba.ue_mask_lo & uerr_sta_lo) || |
| (~phba->sli4_hba.ue_mask_hi & uerr_sta_hi)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "1423 HBA Unrecoverable error: " |
| "uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, " |
| "ue_mask_lo_reg=0x%x, ue_mask_hi_reg=0x%x\n", |
| uerr_sta_lo, uerr_sta_hi, |
| phba->sli4_hba.ue_mask_lo, |
| phba->sli4_hba.ue_mask_hi); |
| phba->work_status[0] = uerr_sta_lo; |
| phba->work_status[1] = uerr_sta_hi; |
| /* Set the driver HA work bitmap */ |
| phba->work_ha |= HA_ERATT; |
| /* Indicate polling handles this ERATT */ |
| phba->hba_flag |= HBA_ERATT_HANDLED; |
| return 1; |
| } |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_check_eratt - check error attention events |
| * @phba: Pointer to HBA context. |
| * |
| * This function is called from timer soft interrupt context to check HBA's |
| * error attention register bit for error attention events. |
| * |
| * This fucntion returns 1 when there is Error Attention in the Host Attention |
| * Register and returns 0 otherwise. |
| **/ |
| int |
| lpfc_sli_check_eratt(struct lpfc_hba *phba) |
| { |
| uint32_t ha_copy; |
| |
| /* If somebody is waiting to handle an eratt, don't process it |
| * here. The brdkill function will do this. |
| */ |
| if (phba->link_flag & LS_IGNORE_ERATT) |
| return 0; |
| |
| /* Check if interrupt handler handles this ERATT */ |
| spin_lock_irq(&phba->hbalock); |
| if (phba->hba_flag & HBA_ERATT_HANDLED) { |
| /* Interrupt handler has handled ERATT */ |
| spin_unlock_irq(&phba->hbalock); |
| return 0; |
| } |
| |
| /* |
| * If there is deferred error attention, do not check for error |
| * attention |
| */ |
| if (unlikely(phba->hba_flag & DEFER_ERATT)) { |
| spin_unlock_irq(&phba->hbalock); |
| return 0; |
| } |
| |
| /* If PCI channel is offline, don't process it */ |
| if (unlikely(pci_channel_offline(phba->pcidev))) { |
| spin_unlock_irq(&phba->hbalock); |
| return 0; |
| } |
| |
| switch (phba->sli_rev) { |
| case LPFC_SLI_REV2: |
| case LPFC_SLI_REV3: |
| /* Read chip Host Attention (HA) register */ |
| ha_copy = lpfc_sli_eratt_read(phba); |
| break; |
| case LPFC_SLI_REV4: |
| /* Read devcie Uncoverable Error (UERR) registers */ |
| ha_copy = lpfc_sli4_eratt_read(phba); |
| break; |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0299 Invalid SLI revision (%d)\n", |
| phba->sli_rev); |
| ha_copy = 0; |
| break; |
| } |
| spin_unlock_irq(&phba->hbalock); |
| |
| return ha_copy; |
| } |
| |
| /** |
| * lpfc_intr_state_check - Check device state for interrupt handling |
| * @phba: Pointer to HBA context. |
| * |
| * This inline routine checks whether a device or its PCI slot is in a state |
| * that the interrupt should be handled. |
| * |
| * This function returns 0 if the device or the PCI slot is in a state that |
| * interrupt should be handled, otherwise -EIO. |
| */ |
| static inline int |
| lpfc_intr_state_check(struct lpfc_hba *phba) |
| { |
| /* If the pci channel is offline, ignore all the interrupts */ |
| if (unlikely(pci_channel_offline(phba->pcidev))) |
| return -EIO; |
| |
| /* Update device level interrupt statistics */ |
| phba->sli.slistat.sli_intr++; |
| |
| /* Ignore all interrupts during initialization. */ |
| if (unlikely(phba->link_state < LPFC_LINK_DOWN)) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli_sp_intr_handler - Slow-path interrupt handler to SLI-3 device |
| * @irq: Interrupt number. |
| * @dev_id: The device context pointer. |
| * |
| * This function is directly called from the PCI layer as an interrupt |
| * service routine when device with SLI-3 interface spec is enabled with |
| * MSI-X multi-message interrupt mode and there are slow-path events in |
| * the HBA. However, when the device is enabled with either MSI or Pin-IRQ |
| * interrupt mode, this function is called as part of the device-level |
| * interrupt handler. When the PCI slot is in error recovery or the HBA |
| * is undergoing initialization, the interrupt handler will not process |
| * the interrupt. The link attention and ELS ring attention events are |
| * handled by the worker thread. The interrupt handler signals the worker |
| * thread and returns for these events. This function is called without |
| * any lock held. It gets the hbalock to access and update SLI data |
| * structures. |
| * |
| * This function returns IRQ_HANDLED when interrupt is handled else it |
| * returns IRQ_NONE. |
| **/ |
| irqreturn_t |
| lpfc_sli_sp_intr_handler(int irq, void *dev_id) |
| { |
| struct lpfc_hba *phba; |
| uint32_t ha_copy, hc_copy; |
| uint32_t work_ha_copy; |
| unsigned long status; |
| unsigned long iflag; |
| uint32_t control; |
| |
| MAILBOX_t *mbox, *pmbox; |
| struct lpfc_vport *vport; |
| struct lpfc_nodelist *ndlp; |
| struct lpfc_dmabuf *mp; |
| LPFC_MBOXQ_t *pmb; |
| int rc; |
| |
| /* |
| * Get the driver's phba structure from the dev_id and |
| * assume the HBA is not interrupting. |
| */ |
| phba = (struct lpfc_hba *)dev_id; |
| |
| if (unlikely(!phba)) |
| return IRQ_NONE; |
| |
| /* |
| * Stuff needs to be attented to when this function is invoked as an |
| * individual interrupt handler in MSI-X multi-message interrupt mode |
| */ |
| if (phba->intr_type == MSIX) { |
| /* Check device state for handling interrupt */ |
| if (lpfc_intr_state_check(phba)) |
| return IRQ_NONE; |
| /* Need to read HA REG for slow-path events */ |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| ha_copy = readl(phba->HAregaddr); |
| /* If somebody is waiting to handle an eratt don't process it |
| * here. The brdkill function will do this. |
| */ |
| if (phba->link_flag & LS_IGNORE_ERATT) |
| ha_copy &= ~HA_ERATT; |
| /* Check the need for handling ERATT in interrupt handler */ |
| if (ha_copy & HA_ERATT) { |
| if (phba->hba_flag & HBA_ERATT_HANDLED) |
| /* ERATT polling has handled ERATT */ |
| ha_copy &= ~HA_ERATT; |
| else |
| /* Indicate interrupt handler handles ERATT */ |
| phba->hba_flag |= HBA_ERATT_HANDLED; |
| } |
| |
| /* |
| * If there is deferred error attention, do not check for any |
| * interrupt. |
| */ |
| if (unlikely(phba->hba_flag & DEFER_ERATT)) { |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return IRQ_NONE; |
| } |
| |
| /* Clear up only attention source related to slow-path */ |
| hc_copy = readl(phba->HCregaddr); |
| writel(hc_copy & ~(HC_MBINT_ENA | HC_R2INT_ENA | |
| HC_LAINT_ENA | HC_ERINT_ENA), |
| phba->HCregaddr); |
| writel((ha_copy & (HA_MBATT | HA_R2_CLR_MSK)), |
| phba->HAregaddr); |
| writel(hc_copy, phba->HCregaddr); |
| readl(phba->HAregaddr); /* flush */ |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| } else |
| ha_copy = phba->ha_copy; |
| |
| work_ha_copy = ha_copy & phba->work_ha_mask; |
| |
| if (work_ha_copy) { |
| if (work_ha_copy & HA_LATT) { |
| if (phba->sli.sli_flag & LPFC_PROCESS_LA) { |
| /* |
| * Turn off Link Attention interrupts |
| * until CLEAR_LA done |
| */ |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| phba->sli.sli_flag &= ~LPFC_PROCESS_LA; |
| control = readl(phba->HCregaddr); |
| control &= ~HC_LAINT_ENA; |
| writel(control, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| } |
| else |
| work_ha_copy &= ~HA_LATT; |
| } |
| |
| if (work_ha_copy & ~(HA_ERATT | HA_MBATT | HA_LATT)) { |
| /* |
| * Turn off Slow Rings interrupts, LPFC_ELS_RING is |
| * the only slow ring. |
| */ |
| status = (work_ha_copy & |
| (HA_RXMASK << (4*LPFC_ELS_RING))); |
| status >>= (4*LPFC_ELS_RING); |
| if (status & HA_RXMASK) { |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| control = readl(phba->HCregaddr); |
| |
| lpfc_debugfs_slow_ring_trc(phba, |
| "ISR slow ring: ctl:x%x stat:x%x isrcnt:x%x", |
| control, status, |
| (uint32_t)phba->sli.slistat.sli_intr); |
| |
| if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) { |
| lpfc_debugfs_slow_ring_trc(phba, |
| "ISR Disable ring:" |
| "pwork:x%x hawork:x%x wait:x%x", |
| phba->work_ha, work_ha_copy, |
| (uint32_t)((unsigned long) |
| &phba->work_waitq)); |
| |
| control &= |
| ~(HC_R0INT_ENA << LPFC_ELS_RING); |
| writel(control, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| } |
| else { |
| lpfc_debugfs_slow_ring_trc(phba, |
| "ISR slow ring: pwork:" |
| "x%x hawork:x%x wait:x%x", |
| phba->work_ha, work_ha_copy, |
| (uint32_t)((unsigned long) |
| &phba->work_waitq)); |
| } |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| } |
| } |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| if (work_ha_copy & HA_ERATT) { |
| lpfc_sli_read_hs(phba); |
| /* |
| * Check if there is a deferred error condition |
| * is active |
| */ |
| if ((HS_FFER1 & phba->work_hs) && |
| ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 | |
| HS_FFER6 | HS_FFER7) & phba->work_hs)) { |
| phba->hba_flag |= DEFER_ERATT; |
| /* Clear all interrupt enable conditions */ |
| writel(0, phba->HCregaddr); |
| readl(phba->HCregaddr); |
| } |
| } |
| |
| if ((work_ha_copy & HA_MBATT) && (phba->sli.mbox_active)) { |
| pmb = phba->sli.mbox_active; |
| pmbox = &pmb->u.mb; |
| mbox = phba->mbox; |
| vport = pmb->vport; |
| |
| /* First check out the status word */ |
| lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t)); |
| if (pmbox->mbxOwner != OWN_HOST) { |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| /* |
| * Stray Mailbox Interrupt, mbxCommand <cmd> |
| * mbxStatus <status> |
| */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | |
| LOG_SLI, |
| "(%d):0304 Stray Mailbox " |
| "Interrupt mbxCommand x%x " |
| "mbxStatus x%x\n", |
| (vport ? vport->vpi : 0), |
| pmbox->mbxCommand, |
| pmbox->mbxStatus); |
| /* clear mailbox attention bit */ |
| work_ha_copy &= ~HA_MBATT; |
| } else { |
| phba->sli.mbox_active = NULL; |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| phba->last_completion_time = jiffies; |
| del_timer(&phba->sli.mbox_tmo); |
| if (pmb->mbox_cmpl) { |
| lpfc_sli_pcimem_bcopy(mbox, pmbox, |
| MAILBOX_CMD_SIZE); |
| } |
| if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) { |
| pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG; |
| |
| lpfc_debugfs_disc_trc(vport, |
| LPFC_DISC_TRC_MBOX_VPORT, |
| "MBOX dflt rpi: : " |
| "status:x%x rpi:x%x", |
| (uint32_t)pmbox->mbxStatus, |
| pmbox->un.varWords[0], 0); |
| |
| if (!pmbox->mbxStatus) { |
| mp = (struct lpfc_dmabuf *) |
| (pmb->context1); |
| ndlp = (struct lpfc_nodelist *) |
| pmb->context2; |
| |
| /* Reg_LOGIN of dflt RPI was |
| * successful. new lets get |
| * rid of the RPI using the |
| * same mbox buffer. |
| */ |
| lpfc_unreg_login(phba, |
| vport->vpi, |
| pmbox->un.varWords[0], |
| pmb); |
| pmb->mbox_cmpl = |
| lpfc_mbx_cmpl_dflt_rpi; |
| pmb->context1 = mp; |
| pmb->context2 = ndlp; |
| pmb->vport = vport; |
| rc = lpfc_sli_issue_mbox(phba, |
| pmb, |
| MBX_NOWAIT); |
| if (rc != MBX_BUSY) |
| lpfc_printf_log(phba, |
| KERN_ERR, |
| LOG_MBOX | LOG_SLI, |
| "0350 rc should have" |
| "been MBX_BUSY\n"); |
| if (rc != MBX_NOT_FINISHED) |
| goto send_current_mbox; |
| } |
| } |
| spin_lock_irqsave( |
| &phba->pport->work_port_lock, |
| iflag); |
| phba->pport->work_port_events &= |
| ~WORKER_MBOX_TMO; |
| spin_unlock_irqrestore( |
| &phba->pport->work_port_lock, |
| iflag); |
| lpfc_mbox_cmpl_put(phba, pmb); |
| } |
| } else |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| |
| if ((work_ha_copy & HA_MBATT) && |
| (phba->sli.mbox_active == NULL)) { |
| send_current_mbox: |
| /* Process next mailbox command if there is one */ |
| do { |
| rc = lpfc_sli_issue_mbox(phba, NULL, |
| MBX_NOWAIT); |
| } while (rc == MBX_NOT_FINISHED); |
| if (rc != MBX_SUCCESS) |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | |
| LOG_SLI, "0349 rc should be " |
| "MBX_SUCCESS\n"); |
| } |
| |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| phba->work_ha |= work_ha_copy; |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| lpfc_worker_wake_up(phba); |
| } |
| return IRQ_HANDLED; |
| |
| } /* lpfc_sli_sp_intr_handler */ |
| |
| /** |
| * lpfc_sli_fp_intr_handler - Fast-path interrupt handler to SLI-3 device. |
| * @irq: Interrupt number. |
| * @dev_id: The device context pointer. |
| * |
| * This function is directly called from the PCI layer as an interrupt |
| * service routine when device with SLI-3 interface spec is enabled with |
| * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB |
| * ring event in the HBA. However, when the device is enabled with either |
| * MSI or Pin-IRQ interrupt mode, this function is called as part of the |
| * device-level interrupt handler. When the PCI slot is in error recovery |
| * or the HBA is undergoing initialization, the interrupt handler will not |
| * process the interrupt. The SCSI FCP fast-path ring event are handled in |
| * the intrrupt context. This function is called without any lock held. |
| * It gets the hbalock to access and update SLI data structures. |
| * |
| * This function returns IRQ_HANDLED when interrupt is handled else it |
| * returns IRQ_NONE. |
| **/ |
| irqreturn_t |
| lpfc_sli_fp_intr_handler(int irq, void *dev_id) |
| { |
| struct lpfc_hba *phba; |
| uint32_t ha_copy; |
| unsigned long status; |
| unsigned long iflag; |
| |
| /* Get the driver's phba structure from the dev_id and |
| * assume the HBA is not interrupting. |
| */ |
| phba = (struct lpfc_hba *) dev_id; |
| |
| if (unlikely(!phba)) |
| return IRQ_NONE; |
| |
| /* |
| * Stuff needs to be attented to when this function is invoked as an |
| * individual interrupt handler in MSI-X multi-message interrupt mode |
| */ |
| if (phba->intr_type == MSIX) { |
| /* Check device state for handling interrupt */ |
| if (lpfc_intr_state_check(phba)) |
| return IRQ_NONE; |
| /* Need to read HA REG for FCP ring and other ring events */ |
| ha_copy = readl(phba->HAregaddr); |
| /* Clear up only attention source related to fast-path */ |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| /* |
| * If there is deferred error attention, do not check for |
| * any interrupt. |
| */ |
| if (unlikely(phba->hba_flag & DEFER_ERATT)) { |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return IRQ_NONE; |
| } |
| writel((ha_copy & (HA_R0_CLR_MSK | HA_R1_CLR_MSK)), |
| phba->HAregaddr); |
| readl(phba->HAregaddr); /* flush */ |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| } else |
| ha_copy = phba->ha_copy; |
| |
| /* |
| * Process all events on FCP ring. Take the optimized path for FCP IO. |
| */ |
| ha_copy &= ~(phba->work_ha_mask); |
| |
| status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING))); |
| status >>= (4*LPFC_FCP_RING); |
| if (status & HA_RXMASK) |
| lpfc_sli_handle_fast_ring_event(phba, |
| &phba->sli.ring[LPFC_FCP_RING], |
| status); |
| |
| if (phba->cfg_multi_ring_support == 2) { |
| /* |
| * Process all events on extra ring. Take the optimized path |
| * for extra ring IO. |
| */ |
| status = (ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING))); |
| status >>= (4*LPFC_EXTRA_RING); |
| if (status & HA_RXMASK) { |
| lpfc_sli_handle_fast_ring_event(phba, |
| &phba->sli.ring[LPFC_EXTRA_RING], |
| status); |
| } |
| } |
| return IRQ_HANDLED; |
| } /* lpfc_sli_fp_intr_handler */ |
| |
| /** |
| * lpfc_sli_intr_handler - Device-level interrupt handler to SLI-3 device |
| * @irq: Interrupt number. |
| * @dev_id: The device context pointer. |
| * |
| * This function is the HBA device-level interrupt handler to device with |
| * SLI-3 interface spec, called from the PCI layer when either MSI or |
| * Pin-IRQ interrupt mode is enabled and there is an event in the HBA which |
| * requires driver attention. This function invokes the slow-path interrupt |
| * attention handling function and fast-path interrupt attention handling |
| * function in turn to process the relevant HBA attention events. This |
| * function is called without any lock held. It gets the hbalock to access |
| * and update SLI data structures. |
| * |
| * This function returns IRQ_HANDLED when interrupt is handled, else it |
| * returns IRQ_NONE. |
| **/ |
| irqreturn_t |
| lpfc_sli_intr_handler(int irq, void *dev_id) |
| { |
| struct lpfc_hba *phba; |
| irqreturn_t sp_irq_rc, fp_irq_rc; |
| unsigned long status1, status2; |
| uint32_t hc_copy; |
| |
| /* |
| * Get the driver's phba structure from the dev_id and |
| * assume the HBA is not interrupting. |
| */ |
| phba = (struct lpfc_hba *) dev_id; |
| |
| if (unlikely(!phba)) |
| return IRQ_NONE; |
| |
| /* Check device state for handling interrupt */ |
| if (lpfc_intr_state_check(phba)) |
| return IRQ_NONE; |
| |
| spin_lock(&phba->hbalock); |
| phba->ha_copy = readl(phba->HAregaddr); |
| if (unlikely(!phba->ha_copy)) { |
| spin_unlock(&phba->hbalock); |
| return IRQ_NONE; |
| } else if (phba->ha_copy & HA_ERATT) { |
| if (phba->hba_flag & HBA_ERATT_HANDLED) |
| /* ERATT polling has handled ERATT */ |
| phba->ha_copy &= ~HA_ERATT; |
| else |
| /* Indicate interrupt handler handles ERATT */ |
| phba->hba_flag |= HBA_ERATT_HANDLED; |
| } |
| |
| /* |
| * If there is deferred error attention, do not check for any interrupt. |
| */ |
| if (unlikely(phba->hba_flag & DEFER_ERATT)) { |
| spin_unlock_irq(&phba->hbalock); |
| return IRQ_NONE; |
| } |
| |
| /* Clear attention sources except link and error attentions */ |
| hc_copy = readl(phba->HCregaddr); |
| writel(hc_copy & ~(HC_MBINT_ENA | HC_R0INT_ENA | HC_R1INT_ENA |
| | HC_R2INT_ENA | HC_LAINT_ENA | HC_ERINT_ENA), |
| phba->HCregaddr); |
| writel((phba->ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr); |
| writel(hc_copy, phba->HCregaddr); |
| readl(phba->HAregaddr); /* flush */ |
| spin_unlock(&phba->hbalock); |
| |
| /* |
| * Invokes slow-path host attention interrupt handling as appropriate. |
| */ |
| |
| /* status of events with mailbox and link attention */ |
| status1 = phba->ha_copy & (HA_MBATT | HA_LATT | HA_ERATT); |
| |
| /* status of events with ELS ring */ |
| status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); |
| status2 >>= (4*LPFC_ELS_RING); |
| |
| if (status1 || (status2 & HA_RXMASK)) |
| sp_irq_rc = lpfc_sli_sp_intr_handler(irq, dev_id); |
| else |
| sp_irq_rc = IRQ_NONE; |
| |
| /* |
| * Invoke fast-path host attention interrupt handling as appropriate. |
| */ |
| |
| /* status of events with FCP ring */ |
| status1 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING))); |
| status1 >>= (4*LPFC_FCP_RING); |
| |
| /* status of events with extra ring */ |
| if (phba->cfg_multi_ring_support == 2) { |
| status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING))); |
| status2 >>= (4*LPFC_EXTRA_RING); |
| } else |
| status2 = 0; |
| |
| if ((status1 & HA_RXMASK) || (status2 & HA_RXMASK)) |
| fp_irq_rc = lpfc_sli_fp_intr_handler(irq, dev_id); |
| else |
| fp_irq_rc = IRQ_NONE; |
| |
| /* Return device-level interrupt handling status */ |
| return (sp_irq_rc == IRQ_HANDLED) ? sp_irq_rc : fp_irq_rc; |
| } /* lpfc_sli_intr_handler */ |
| |
| /** |
| * lpfc_sli4_fcp_xri_abort_event_proc - Process fcp xri abort event |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This routine is invoked by the worker thread to process all the pending |
| * SLI4 FCP abort XRI events. |
| **/ |
| void lpfc_sli4_fcp_xri_abort_event_proc(struct lpfc_hba *phba) |
| { |
| struct lpfc_cq_event *cq_event; |
| |
| /* First, declare the fcp xri abort event has been handled */ |
| spin_lock_irq(&phba->hbalock); |
| phba->hba_flag &= ~FCP_XRI_ABORT_EVENT; |
| spin_unlock_irq(&phba->hbalock); |
| /* Now, handle all the fcp xri abort events */ |
| while (!list_empty(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue)) { |
| /* Get the first event from the head of the event queue */ |
| spin_lock_irq(&phba->hbalock); |
| list_remove_head(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue, |
| cq_event, struct lpfc_cq_event, list); |
| spin_unlock_irq(&phba->hbalock); |
| /* Notify aborted XRI for FCP work queue */ |
| lpfc_sli4_fcp_xri_aborted(phba, &cq_event->cqe.wcqe_axri); |
| /* Free the event processed back to the free pool */ |
| lpfc_sli4_cq_event_release(phba, cq_event); |
| } |
| } |
| |
| /** |
| * lpfc_sli4_els_xri_abort_event_proc - Process els xri abort event |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This routine is invoked by the worker thread to process all the pending |
| * SLI4 els abort xri events. |
| **/ |
| void lpfc_sli4_els_xri_abort_event_proc(struct lpfc_hba *phba) |
| { |
| struct lpfc_cq_event *cq_event; |
| |
| /* First, declare the els xri abort event has been handled */ |
| spin_lock_irq(&phba->hbalock); |
| phba->hba_flag &= ~ELS_XRI_ABORT_EVENT; |
| spin_unlock_irq(&phba->hbalock); |
| /* Now, handle all the els xri abort events */ |
| while (!list_empty(&phba->sli4_hba.sp_els_xri_aborted_work_queue)) { |
| /* Get the first event from the head of the event queue */ |
| spin_lock_irq(&phba->hbalock); |
| list_remove_head(&phba->sli4_hba.sp_els_xri_aborted_work_queue, |
| cq_event, struct lpfc_cq_event, list); |
| spin_unlock_irq(&phba->hbalock); |
| /* Notify aborted XRI for ELS work queue */ |
| lpfc_sli4_els_xri_aborted(phba, &cq_event->cqe.wcqe_axri); |
| /* Free the event processed back to the free pool */ |
| lpfc_sli4_cq_event_release(phba, cq_event); |
| } |
| } |
| |
| /** |
| * lpfc_sli4_iocb_param_transfer - Transfer pIocbOut and cmpl status to pIocbIn |
| * @phba: pointer to lpfc hba data structure |
| * @pIocbIn: pointer to the rspiocbq |
| * @pIocbOut: pointer to the cmdiocbq |
| * @wcqe: pointer to the complete wcqe |
| * |
| * This routine transfers the fields of a command iocbq to a response iocbq |
| * by copying all the IOCB fields from command iocbq and transferring the |
| * completion status information from the complete wcqe. |
| **/ |
| static void |
| lpfc_sli4_iocb_param_transfer(struct lpfc_hba *phba, |
| struct lpfc_iocbq *pIocbIn, |
| struct lpfc_iocbq *pIocbOut, |
| struct lpfc_wcqe_complete *wcqe) |
| { |
| unsigned long iflags; |
| size_t offset = offsetof(struct lpfc_iocbq, iocb); |
| |
| memcpy((char *)pIocbIn + offset, (char *)pIocbOut + offset, |
| sizeof(struct lpfc_iocbq) - offset); |
| /* Map WCQE parameters into irspiocb parameters */ |
| pIocbIn->iocb.ulpStatus = bf_get(lpfc_wcqe_c_status, wcqe); |
| if (pIocbOut->iocb_flag & LPFC_IO_FCP) |
| if (pIocbIn->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR) |
| pIocbIn->iocb.un.fcpi.fcpi_parm = |
| pIocbOut->iocb.un.fcpi.fcpi_parm - |
| wcqe->total_data_placed; |
| else |
| pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter; |
| else { |
| pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter; |
| pIocbIn->iocb.un.genreq64.bdl.bdeSize = wcqe->total_data_placed; |
| } |
| |
| /* Pick up HBA exchange busy condition */ |
| if (bf_get(lpfc_wcqe_c_xb, wcqe)) { |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| pIocbIn->iocb_flag |= LPFC_EXCHANGE_BUSY; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| } |
| } |
| |
| /** |
| * lpfc_sli4_els_wcqe_to_rspiocbq - Get response iocbq from els wcqe |
| * @phba: Pointer to HBA context object. |
| * @wcqe: Pointer to work-queue completion queue entry. |
| * |
| * This routine handles an ELS work-queue completion event and construct |
| * a pseudo response ELS IODBQ from the SLI4 ELS WCQE for the common |
| * discovery engine to handle. |
| * |
| * Return: Pointer to the receive IOCBQ, NULL otherwise. |
| **/ |
| static struct lpfc_iocbq * |
| lpfc_sli4_els_wcqe_to_rspiocbq(struct lpfc_hba *phba, |
| struct lpfc_iocbq *irspiocbq) |
| { |
| struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; |
| struct lpfc_iocbq *cmdiocbq; |
| struct lpfc_wcqe_complete *wcqe; |
| unsigned long iflags; |
| |
| wcqe = &irspiocbq->cq_event.cqe.wcqe_cmpl; |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| pring->stats.iocb_event++; |
| /* Look up the ELS command IOCB and create pseudo response IOCB */ |
| cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring, |
| bf_get(lpfc_wcqe_c_request_tag, wcqe)); |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| |
| if (unlikely(!cmdiocbq)) { |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "0386 ELS complete with no corresponding " |
| "cmdiocb: iotag (%d)\n", |
| bf_get(lpfc_wcqe_c_request_tag, wcqe)); |
| lpfc_sli_release_iocbq(phba, irspiocbq); |
| return NULL; |
| } |
| |
| /* Fake the irspiocbq and copy necessary response information */ |
| lpfc_sli4_iocb_param_transfer(phba, irspiocbq, cmdiocbq, wcqe); |
| |
| return irspiocbq; |
| } |
| |
| /** |
| * lpfc_sli4_sp_handle_async_event - Handle an asynchroous event |
| * @phba: Pointer to HBA context object. |
| * @cqe: Pointer to mailbox completion queue entry. |
| * |
| * This routine process a mailbox completion queue entry with asynchrous |
| * event. |
| * |
| * Return: true if work posted to worker thread, otherwise false. |
| **/ |
| static bool |
| lpfc_sli4_sp_handle_async_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe) |
| { |
| struct lpfc_cq_event *cq_event; |
| unsigned long iflags; |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_SLI, |
| "0392 Async Event: word0:x%x, word1:x%x, " |
| "word2:x%x, word3:x%x\n", mcqe->word0, |
| mcqe->mcqe_tag0, mcqe->mcqe_tag1, mcqe->trailer); |
| |
| /* Allocate a new internal CQ_EVENT entry */ |
| cq_event = lpfc_sli4_cq_event_alloc(phba); |
| if (!cq_event) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0394 Failed to allocate CQ_EVENT entry\n"); |
| return false; |
| } |
| |
| /* Move the CQE into an asynchronous event entry */ |
| memcpy(&cq_event->cqe, mcqe, sizeof(struct lpfc_mcqe)); |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| list_add_tail(&cq_event->list, &phba->sli4_hba.sp_asynce_work_queue); |
| /* Set the async event flag */ |
| phba->hba_flag |= ASYNC_EVENT; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| |
| return true; |
| } |
| |
| /** |
| * lpfc_sli4_sp_handle_mbox_event - Handle a mailbox completion event |
| * @phba: Pointer to HBA context object. |
| * @cqe: Pointer to mailbox completion queue entry. |
| * |
| * This routine process a mailbox completion queue entry with mailbox |
| * completion event. |
| * |
| * Return: true if work posted to worker thread, otherwise false. |
| **/ |
| static bool |
| lpfc_sli4_sp_handle_mbox_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe) |
| { |
| uint32_t mcqe_status; |
| MAILBOX_t *mbox, *pmbox; |
| struct lpfc_mqe *mqe; |
| struct lpfc_vport *vport; |
| struct lpfc_nodelist *ndlp; |
| struct lpfc_dmabuf *mp; |
| unsigned long iflags; |
| LPFC_MBOXQ_t *pmb; |
| bool workposted = false; |
| int rc; |
| |
| /* If not a mailbox complete MCQE, out by checking mailbox consume */ |
| if (!bf_get(lpfc_trailer_completed, mcqe)) |
| goto out_no_mqe_complete; |
| |
| /* Get the reference to the active mbox command */ |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| pmb = phba->sli.mbox_active; |
| if (unlikely(!pmb)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, |
| "1832 No pending MBOX command to handle\n"); |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| goto out_no_mqe_complete; |
| } |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| mqe = &pmb->u.mqe; |
| pmbox = (MAILBOX_t *)&pmb->u.mqe; |
| mbox = phba->mbox; |
| vport = pmb->vport; |
| |
| /* Reset heartbeat timer */ |
| phba->last_completion_time = jiffies; |
| del_timer(&phba->sli.mbox_tmo); |
| |
| /* Move mbox data to caller's mailbox region, do endian swapping */ |
| if (pmb->mbox_cmpl && mbox) |
| lpfc_sli_pcimem_bcopy(mbox, mqe, sizeof(struct lpfc_mqe)); |
| /* Set the mailbox status with SLI4 range 0x4000 */ |
| mcqe_status = bf_get(lpfc_mcqe_status, mcqe); |
| if (mcqe_status != MB_CQE_STATUS_SUCCESS) |
| bf_set(lpfc_mqe_status, mqe, |
| (LPFC_MBX_ERROR_RANGE | mcqe_status)); |
| |
| if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) { |
| pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG; |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_MBOX_VPORT, |
| "MBOX dflt rpi: status:x%x rpi:x%x", |
| mcqe_status, |
| pmbox->un.varWords[0], 0); |
| if (mcqe_status == MB_CQE_STATUS_SUCCESS) { |
| mp = (struct lpfc_dmabuf *)(pmb->context1); |
| ndlp = (struct lpfc_nodelist *)pmb->context2; |
| /* Reg_LOGIN of dflt RPI was successful. Now lets get |
| * RID of the PPI using the same mbox buffer. |
| */ |
| lpfc_unreg_login(phba, vport->vpi, |
| pmbox->un.varWords[0], pmb); |
| pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; |
| pmb->context1 = mp; |
| pmb->context2 = ndlp; |
| pmb->vport = vport; |
| rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); |
| if (rc != MBX_BUSY) |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | |
| LOG_SLI, "0385 rc should " |
| "have been MBX_BUSY\n"); |
| if (rc != MBX_NOT_FINISHED) |
| goto send_current_mbox; |
| } |
| } |
| spin_lock_irqsave(&phba->pport->work_port_lock, iflags); |
| phba->pport->work_port_events &= ~WORKER_MBOX_TMO; |
| spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags); |
| |
| /* There is mailbox completion work to do */ |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| __lpfc_mbox_cmpl_put(phba, pmb); |
| phba->work_ha |= HA_MBATT; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| workposted = true; |
| |
| send_current_mbox: |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| /* Release the mailbox command posting token */ |
| phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| /* Setting active mailbox pointer need to be in sync to flag clear */ |
| phba->sli.mbox_active = NULL; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| /* Wake up worker thread to post the next pending mailbox command */ |
| lpfc_worker_wake_up(phba); |
| out_no_mqe_complete: |
| if (bf_get(lpfc_trailer_consumed, mcqe)) |
| lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq); |
| return workposted; |
| } |
| |
| /** |
| * lpfc_sli4_sp_handle_mcqe - Process a mailbox completion queue entry |
| * @phba: Pointer to HBA context object. |
| * @cqe: Pointer to mailbox completion queue entry. |
| * |
| * This routine process a mailbox completion queue entry, it invokes the |
| * proper mailbox complete handling or asynchrous event handling routine |
| * according to the MCQE's async bit. |
| * |
| * Return: true if work posted to worker thread, otherwise false. |
| **/ |
| static bool |
| lpfc_sli4_sp_handle_mcqe(struct lpfc_hba *phba, struct lpfc_cqe *cqe) |
| { |
| struct lpfc_mcqe mcqe; |
| bool workposted; |
| |
| /* Copy the mailbox MCQE and convert endian order as needed */ |
| lpfc_sli_pcimem_bcopy(cqe, &mcqe, sizeof(struct lpfc_mcqe)); |
| |
| /* Invoke the proper event handling routine */ |
| if (!bf_get(lpfc_trailer_async, &mcqe)) |
| workposted = lpfc_sli4_sp_handle_mbox_event(phba, &mcqe); |
| else |
| workposted = lpfc_sli4_sp_handle_async_event(phba, &mcqe); |
| return workposted; |
| } |
| |
| /** |
| * lpfc_sli4_sp_handle_els_wcqe - Handle els work-queue completion event |
| * @phba: Pointer to HBA context object. |
| * @wcqe: Pointer to work-queue completion queue entry. |
| * |
| * This routine handles an ELS work-queue completion event. |
| * |
| * Return: true if work posted to worker thread, otherwise false. |
| **/ |
| static bool |
| lpfc_sli4_sp_handle_els_wcqe(struct lpfc_hba *phba, |
| struct lpfc_wcqe_complete *wcqe) |
| { |
| struct lpfc_iocbq *irspiocbq; |
| unsigned long iflags; |
| |
| /* Get an irspiocbq for later ELS response processing use */ |
| irspiocbq = lpfc_sli_get_iocbq(phba); |
| if (!irspiocbq) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0387 Failed to allocate an iocbq\n"); |
| return false; |
| } |
| |
| /* Save off the slow-path queue event for work thread to process */ |
| memcpy(&irspiocbq->cq_event.cqe.wcqe_cmpl, wcqe, sizeof(*wcqe)); |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| list_add_tail(&irspiocbq->cq_event.list, |
| &phba->sli4_hba.sp_queue_event); |
| phba->hba_flag |= HBA_SP_QUEUE_EVT; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| |
| return true; |
| } |
| |
| /** |
| * lpfc_sli4_sp_handle_rel_wcqe - Handle slow-path WQ entry consumed event |
| * @phba: Pointer to HBA context object. |
| * @wcqe: Pointer to work-queue completion queue entry. |
| * |
| * This routine handles slow-path WQ entry comsumed event by invoking the |
| * proper WQ release routine to the slow-path WQ. |
| **/ |
| static void |
| lpfc_sli4_sp_handle_rel_wcqe(struct lpfc_hba *phba, |
| struct lpfc_wcqe_release *wcqe) |
| { |
| /* Check for the slow-path ELS work queue */ |
| if (bf_get(lpfc_wcqe_r_wq_id, wcqe) == phba->sli4_hba.els_wq->queue_id) |
| lpfc_sli4_wq_release(phba->sli4_hba.els_wq, |
| bf_get(lpfc_wcqe_r_wqe_index, wcqe)); |
| else |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "2579 Slow-path wqe consume event carries " |
| "miss-matched qid: wcqe-qid=x%x, sp-qid=x%x\n", |
| bf_get(lpfc_wcqe_r_wqe_index, wcqe), |
| phba->sli4_hba.els_wq->queue_id); |
| } |
| |
| /** |
| * lpfc_sli4_sp_handle_abort_xri_wcqe - Handle a xri abort event |
| * @phba: Pointer to HBA context object. |
| * @cq: Pointer to a WQ completion queue. |
| * @wcqe: Pointer to work-queue completion queue entry. |
| * |
| * This routine handles an XRI abort event. |
| * |
| * Return: true if work posted to worker thread, otherwise false. |
| **/ |
| static bool |
| lpfc_sli4_sp_handle_abort_xri_wcqe(struct lpfc_hba *phba, |
| struct lpfc_queue *cq, |
| struct sli4_wcqe_xri_aborted *wcqe) |
| { |
| bool workposted = false; |
| struct lpfc_cq_event *cq_event; |
| unsigned long iflags; |
| |
| /* Allocate a new internal CQ_EVENT entry */ |
| cq_event = lpfc_sli4_cq_event_alloc(phba); |
| if (!cq_event) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0602 Failed to allocate CQ_EVENT entry\n"); |
| return false; |
| } |
| |
| /* Move the CQE into the proper xri abort event list */ |
| memcpy(&cq_event->cqe, wcqe, sizeof(struct sli4_wcqe_xri_aborted)); |
| switch (cq->subtype) { |
| case LPFC_FCP: |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| list_add_tail(&cq_event->list, |
| &phba->sli4_hba.sp_fcp_xri_aborted_work_queue); |
| /* Set the fcp xri abort event flag */ |
| phba->hba_flag |= FCP_XRI_ABORT_EVENT; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| workposted = true; |
| break; |
| case LPFC_ELS: |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| list_add_tail(&cq_event->list, |
| &phba->sli4_hba.sp_els_xri_aborted_work_queue); |
| /* Set the els xri abort event flag */ |
| phba->hba_flag |= ELS_XRI_ABORT_EVENT; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| workposted = true; |
| break; |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0603 Invalid work queue CQE subtype (x%x)\n", |
| cq->subtype); |
| workposted = false; |
| break; |
| } |
| return workposted; |
| } |
| |
| /** |
| * lpfc_sli4_sp_handle_rcqe - Process a receive-queue completion queue entry |
| * @phba: Pointer to HBA context object. |
| * @rcqe: Pointer to receive-queue completion queue entry. |
| * |
| * This routine process a receive-queue completion queue entry. |
| * |
| * Return: true if work posted to worker thread, otherwise false. |
| **/ |
| static bool |
| lpfc_sli4_sp_handle_rcqe(struct lpfc_hba *phba, struct lpfc_rcqe *rcqe) |
| { |
| bool workposted = false; |
| struct lpfc_queue *hrq = phba->sli4_hba.hdr_rq; |
| struct lpfc_queue *drq = phba->sli4_hba.dat_rq; |
| struct hbq_dmabuf *dma_buf; |
| uint32_t status; |
| unsigned long iflags; |
| |
| if (bf_get(lpfc_rcqe_rq_id, rcqe) != hrq->queue_id) |
| goto out; |
| |
| status = bf_get(lpfc_rcqe_status, rcqe); |
| switch (status) { |
| case FC_STATUS_RQ_BUF_LEN_EXCEEDED: |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2537 Receive Frame Truncated!!\n"); |
| case FC_STATUS_RQ_SUCCESS: |
| lpfc_sli4_rq_release(hrq, drq); |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| dma_buf = lpfc_sli_hbqbuf_get(&phba->hbqs[0].hbq_buffer_list); |
| if (!dma_buf) { |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| goto out; |
| } |
| memcpy(&dma_buf->cq_event.cqe.rcqe_cmpl, rcqe, sizeof(*rcqe)); |
| /* save off the frame for the word thread to process */ |
| list_add_tail(&dma_buf->cq_event.list, |
| &phba->sli4_hba.sp_queue_event); |
| /* Frame received */ |
| phba->hba_flag |= HBA_SP_QUEUE_EVT; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| workposted = true; |
| break; |
| case FC_STATUS_INSUFF_BUF_NEED_BUF: |
| case FC_STATUS_INSUFF_BUF_FRM_DISC: |
| /* Post more buffers if possible */ |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| phba->hba_flag |= HBA_POST_RECEIVE_BUFFER; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| workposted = true; |
| break; |
| } |
| out: |
| return workposted; |
| } |
| |
| /** |
| * lpfc_sli4_sp_handle_cqe - Process a slow path completion queue entry |
| * @phba: Pointer to HBA context object. |
| * @cq: Pointer to the completion queue. |
| * @wcqe: Pointer to a completion queue entry. |
| * |
| * This routine process a slow-path work-queue or recieve queue completion queue |
| * entry. |
| * |
| * Return: true if work posted to worker thread, otherwise false. |
| **/ |
| static bool |
| lpfc_sli4_sp_handle_cqe(struct lpfc_hba *phba, struct lpfc_queue *cq, |
| struct lpfc_cqe *cqe) |
| { |
| struct lpfc_cqe cqevt; |
| bool workposted = false; |
| |
| /* Copy the work queue CQE and convert endian order if needed */ |
| lpfc_sli_pcimem_bcopy(cqe, &cqevt, sizeof(struct lpfc_cqe)); |
| |
| /* Check and process for different type of WCQE and dispatch */ |
| switch (bf_get(lpfc_cqe_code, &cqevt)) { |
| case CQE_CODE_COMPL_WQE: |
| /* Process the WQ/RQ complete event */ |
| workposted = lpfc_sli4_sp_handle_els_wcqe(phba, |
| (struct lpfc_wcqe_complete *)&cqevt); |
| break; |
| case CQE_CODE_RELEASE_WQE: |
| /* Process the WQ release event */ |
| lpfc_sli4_sp_handle_rel_wcqe(phba, |
| (struct lpfc_wcqe_release *)&cqevt); |
| break; |
| case CQE_CODE_XRI_ABORTED: |
| /* Process the WQ XRI abort event */ |
| workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq, |
| (struct sli4_wcqe_xri_aborted *)&cqevt); |
| break; |
| case CQE_CODE_RECEIVE: |
| /* Process the RQ event */ |
| workposted = lpfc_sli4_sp_handle_rcqe(phba, |
| (struct lpfc_rcqe *)&cqevt); |
| break; |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0388 Not a valid WCQE code: x%x\n", |
| bf_get(lpfc_cqe_code, &cqevt)); |
| break; |
| } |
| return workposted; |
| } |
| |
| /** |
| * lpfc_sli4_sp_handle_eqe - Process a slow-path event queue entry |
| * @phba: Pointer to HBA context object. |
| * @eqe: Pointer to fast-path event queue entry. |
| * |
| * This routine process a event queue entry from the slow-path event queue. |
| * It will check the MajorCode and MinorCode to determine this is for a |
| * completion event on a completion queue, if not, an error shall be logged |
| * and just return. Otherwise, it will get to the corresponding completion |
| * queue and process all the entries on that completion queue, rearm the |
| * completion queue, and then return. |
| * |
| **/ |
| static void |
| lpfc_sli4_sp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe) |
| { |
| struct lpfc_queue *cq = NULL, *childq, *speq; |
| struct lpfc_cqe *cqe; |
| bool workposted = false; |
| int ecount = 0; |
| uint16_t cqid; |
| |
| if (bf_get(lpfc_eqe_major_code, eqe) != 0 || |
| bf_get(lpfc_eqe_minor_code, eqe) != 0) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0359 Not a valid slow-path completion " |
| "event: majorcode=x%x, minorcode=x%x\n", |
| bf_get(lpfc_eqe_major_code, eqe), |
| bf_get(lpfc_eqe_minor_code, eqe)); |
| return; |
| } |
| |
| /* Get the reference to the corresponding CQ */ |
| cqid = bf_get(lpfc_eqe_resource_id, eqe); |
| |
| /* Search for completion queue pointer matching this cqid */ |
| speq = phba->sli4_hba.sp_eq; |
| list_for_each_entry(childq, &speq->child_list, list) { |
| if (childq->queue_id == cqid) { |
| cq = childq; |
| break; |
| } |
| } |
| if (unlikely(!cq)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0365 Slow-path CQ identifier (%d) does " |
| "not exist\n", cqid); |
| return; |
| } |
| |
| /* Process all the entries to the CQ */ |
| switch (cq->type) { |
| case LPFC_MCQ: |
| while ((cqe = lpfc_sli4_cq_get(cq))) { |
| workposted |= lpfc_sli4_sp_handle_mcqe(phba, cqe); |
| if (!(++ecount % LPFC_GET_QE_REL_INT)) |
| lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); |
| } |
| break; |
| case LPFC_WCQ: |
| while ((cqe = lpfc_sli4_cq_get(cq))) { |
| workposted |= lpfc_sli4_sp_handle_cqe(phba, cq, cqe); |
| if (!(++ecount % LPFC_GET_QE_REL_INT)) |
| lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); |
| } |
| break; |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0370 Invalid completion queue type (%d)\n", |
| cq->type); |
| return; |
| } |
| |
| /* Catch the no cq entry condition, log an error */ |
| if (unlikely(ecount == 0)) |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0371 No entry from the CQ: identifier " |
| "(x%x), type (%d)\n", cq->queue_id, cq->type); |
| |
| /* In any case, flash and re-arm the RCQ */ |
| lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM); |
| |
| /* wake up worker thread if there are works to be done */ |
| if (workposted) |
| lpfc_worker_wake_up(phba); |
| } |
| |
| /** |
| * lpfc_sli4_fp_handle_fcp_wcqe - Process fast-path work queue completion entry |
| * @eqe: Pointer to fast-path completion queue entry. |
| * |
| * This routine process a fast-path work queue completion entry from fast-path |
| * event queue for FCP command response completion. |
| **/ |
| static void |
| lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba, |
| struct lpfc_wcqe_complete *wcqe) |
| { |
| struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_FCP_RING]; |
| struct lpfc_iocbq *cmdiocbq; |
| struct lpfc_iocbq irspiocbq; |
| unsigned long iflags; |
| |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| pring->stats.iocb_event++; |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| |
| /* Check for response status */ |
| if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) { |
| /* If resource errors reported from HBA, reduce queue |
| * depth of the SCSI device. |
| */ |
| if ((bf_get(lpfc_wcqe_c_status, wcqe) == |
| IOSTAT_LOCAL_REJECT) && |
| (wcqe->parameter == IOERR_NO_RESOURCES)) { |
| phba->lpfc_rampdown_queue_depth(phba); |
| } |
| /* Log the error status */ |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "0373 FCP complete error: status=x%x, " |
| "hw_status=x%x, total_data_specified=%d, " |
| "parameter=x%x, word3=x%x\n", |
| bf_get(lpfc_wcqe_c_status, wcqe), |
| bf_get(lpfc_wcqe_c_hw_status, wcqe), |
| wcqe->total_data_placed, wcqe->parameter, |
| wcqe->word3); |
| } |
| |
| /* Look up the FCP command IOCB and create pseudo response IOCB */ |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring, |
| bf_get(lpfc_wcqe_c_request_tag, wcqe)); |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| if (unlikely(!cmdiocbq)) { |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "0374 FCP complete with no corresponding " |
| "cmdiocb: iotag (%d)\n", |
| bf_get(lpfc_wcqe_c_request_tag, wcqe)); |
| return; |
| } |
| if (unlikely(!cmdiocbq->iocb_cmpl)) { |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "0375 FCP cmdiocb not callback function " |
| "iotag: (%d)\n", |
| bf_get(lpfc_wcqe_c_request_tag, wcqe)); |
| return; |
| } |
| |
| /* Fake the irspiocb and copy necessary response information */ |
| lpfc_sli4_iocb_param_transfer(phba, &irspiocbq, cmdiocbq, wcqe); |
| |
| /* Pass the cmd_iocb and the rsp state to the upper layer */ |
| (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &irspiocbq); |
| } |
| |
| /** |
| * lpfc_sli4_fp_handle_rel_wcqe - Handle fast-path WQ entry consumed event |
| * @phba: Pointer to HBA context object. |
| * @cq: Pointer to completion queue. |
| * @wcqe: Pointer to work-queue completion queue entry. |
| * |
| * This routine handles an fast-path WQ entry comsumed event by invoking the |
| * proper WQ release routine to the slow-path WQ. |
| **/ |
| static void |
| lpfc_sli4_fp_handle_rel_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq, |
| struct lpfc_wcqe_release *wcqe) |
| { |
| struct lpfc_queue *childwq; |
| bool wqid_matched = false; |
| uint16_t fcp_wqid; |
| |
| /* Check for fast-path FCP work queue release */ |
| fcp_wqid = bf_get(lpfc_wcqe_r_wq_id, wcqe); |
| list_for_each_entry(childwq, &cq->child_list, list) { |
| if (childwq->queue_id == fcp_wqid) { |
| lpfc_sli4_wq_release(childwq, |
| bf_get(lpfc_wcqe_r_wqe_index, wcqe)); |
| wqid_matched = true; |
| break; |
| } |
| } |
| /* Report warning log message if no match found */ |
| if (wqid_matched != true) |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "2580 Fast-path wqe consume event carries " |
| "miss-matched qid: wcqe-qid=x%x\n", fcp_wqid); |
| } |
| |
| /** |
| * lpfc_sli4_fp_handle_wcqe - Process fast-path work queue completion entry |
| * @cq: Pointer to the completion queue. |
| * @eqe: Pointer to fast-path completion queue entry. |
| * |
| * This routine process a fast-path work queue completion entry from fast-path |
| * event queue for FCP command response completion. |
| **/ |
| static int |
| lpfc_sli4_fp_handle_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq, |
| struct lpfc_cqe *cqe) |
| { |
| struct lpfc_wcqe_release wcqe; |
| bool workposted = false; |
| |
| /* Copy the work queue CQE and convert endian order if needed */ |
| lpfc_sli_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe)); |
| |
| /* Check and process for different type of WCQE and dispatch */ |
| switch (bf_get(lpfc_wcqe_c_code, &wcqe)) { |
| case CQE_CODE_COMPL_WQE: |
| /* Process the WQ complete event */ |
| lpfc_sli4_fp_handle_fcp_wcqe(phba, |
| (struct lpfc_wcqe_complete *)&wcqe); |
| break; |
| case CQE_CODE_RELEASE_WQE: |
| /* Process the WQ release event */ |
| lpfc_sli4_fp_handle_rel_wcqe(phba, cq, |
| (struct lpfc_wcqe_release *)&wcqe); |
| break; |
| case CQE_CODE_XRI_ABORTED: |
| /* Process the WQ XRI abort event */ |
| workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq, |
| (struct sli4_wcqe_xri_aborted *)&wcqe); |
| break; |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0144 Not a valid WCQE code: x%x\n", |
| bf_get(lpfc_wcqe_c_code, &wcqe)); |
| break; |
| } |
| return workposted; |
| } |
| |
| /** |
| * lpfc_sli4_fp_handle_eqe - Process a fast-path event queue entry |
| * @phba: Pointer to HBA context object. |
| * @eqe: Pointer to fast-path event queue entry. |
| * |
| * This routine process a event queue entry from the fast-path event queue. |
| * It will check the MajorCode and MinorCode to determine this is for a |
| * completion event on a completion queue, if not, an error shall be logged |
| * and just return. Otherwise, it will get to the corresponding completion |
| * queue and process all the entries on the completion queue, rearm the |
| * completion queue, and then return. |
| **/ |
| static void |
| lpfc_sli4_fp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe, |
| uint32_t fcp_cqidx) |
| { |
| struct lpfc_queue *cq; |
| struct lpfc_cqe *cqe; |
| bool workposted = false; |
| uint16_t cqid; |
| int ecount = 0; |
| |
| if (unlikely(bf_get(lpfc_eqe_major_code, eqe) != 0) || |
| unlikely(bf_get(lpfc_eqe_minor_code, eqe) != 0)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0366 Not a valid fast-path completion " |
| "event: majorcode=x%x, minorcode=x%x\n", |
| bf_get(lpfc_eqe_major_code, eqe), |
| bf_get(lpfc_eqe_minor_code, eqe)); |
| return; |
| } |
| |
| cq = phba->sli4_hba.fcp_cq[fcp_cqidx]; |
| if (unlikely(!cq)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0367 Fast-path completion queue does not " |
| "exist\n"); |
| return; |
| } |
| |
| /* Get the reference to the corresponding CQ */ |
| cqid = bf_get(lpfc_eqe_resource_id, eqe); |
| if (unlikely(cqid != cq->queue_id)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0368 Miss-matched fast-path completion " |
| "queue identifier: eqcqid=%d, fcpcqid=%d\n", |
| cqid, cq->queue_id); |
| return; |
| } |
| |
| /* Process all the entries to the CQ */ |
| while ((cqe = lpfc_sli4_cq_get(cq))) { |
| workposted |= lpfc_sli4_fp_handle_wcqe(phba, cq, cqe); |
| if (!(++ecount % LPFC_GET_QE_REL_INT)) |
| lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); |
| } |
| |
| /* Catch the no cq entry condition */ |
| if (unlikely(ecount == 0)) |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0369 No entry from fast-path completion " |
| "queue fcpcqid=%d\n", cq->queue_id); |
| |
| /* In any case, flash and re-arm the CQ */ |
| lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM); |
| |
| /* wake up worker thread if there are works to be done */ |
| if (workposted) |
| lpfc_worker_wake_up(phba); |
| } |
| |
| static void |
| lpfc_sli4_eq_flush(struct lpfc_hba *phba, struct lpfc_queue *eq) |
| { |
| struct lpfc_eqe *eqe; |
| |
| /* walk all the EQ entries and drop on the floor */ |
| while ((eqe = lpfc_sli4_eq_get(eq))) |
| ; |
| |
| /* Clear and re-arm the EQ */ |
| lpfc_sli4_eq_release(eq, LPFC_QUEUE_REARM); |
| } |
| |
| /** |
| * lpfc_sli4_sp_intr_handler - Slow-path interrupt handler to SLI-4 device |
| * @irq: Interrupt number. |
| * @dev_id: The device context pointer. |
| * |
| * This function is directly called from the PCI layer as an interrupt |
| * service routine when device with SLI-4 interface spec is enabled with |
| * MSI-X multi-message interrupt mode and there are slow-path events in |
| * the HBA. However, when the device is enabled with either MSI or Pin-IRQ |
| * interrupt mode, this function is called as part of the device-level |
| * interrupt handler. When the PCI slot is in error recovery or the HBA is |
| * undergoing initialization, the interrupt handler will not process the |
| * interrupt. The link attention and ELS ring attention events are handled |
| * by the worker thread. The interrupt handler signals the worker thread |
| * and returns for these events. This function is called without any lock |
| * held. It gets the hbalock to access and update SLI data structures. |
| * |
| * This function returns IRQ_HANDLED when interrupt is handled else it |
| * returns IRQ_NONE. |
| **/ |
| irqreturn_t |
| lpfc_sli4_sp_intr_handler(int irq, void *dev_id) |
| { |
| struct lpfc_hba *phba; |
| struct lpfc_queue *speq; |
| struct lpfc_eqe *eqe; |
| unsigned long iflag; |
| int ecount = 0; |
| |
| /* |
| * Get the driver's phba structure from the dev_id |
| */ |
| phba = (struct lpfc_hba *)dev_id; |
| |
| if (unlikely(!phba)) |
| return IRQ_NONE; |
| |
| /* Get to the EQ struct associated with this vector */ |
| speq = phba->sli4_hba.sp_eq; |
| |
| /* Check device state for handling interrupt */ |
| if (unlikely(lpfc_intr_state_check(phba))) { |
| /* Check again for link_state with lock held */ |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| if (phba->link_state < LPFC_LINK_DOWN) |
| /* Flush, clear interrupt, and rearm the EQ */ |
| lpfc_sli4_eq_flush(phba, speq); |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return IRQ_NONE; |
| } |
| |
| /* |
| * Process all the event on FCP slow-path EQ |
| */ |
| while ((eqe = lpfc_sli4_eq_get(speq))) { |
| lpfc_sli4_sp_handle_eqe(phba, eqe); |
| if (!(++ecount % LPFC_GET_QE_REL_INT)) |
| lpfc_sli4_eq_release(speq, LPFC_QUEUE_NOARM); |
| } |
| |
| /* Always clear and re-arm the slow-path EQ */ |
| lpfc_sli4_eq_release(speq, LPFC_QUEUE_REARM); |
| |
| /* Catch the no cq entry condition */ |
| if (unlikely(ecount == 0)) { |
| if (phba->intr_type == MSIX) |
| /* MSI-X treated interrupt served as no EQ share INT */ |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "0357 MSI-X interrupt with no EQE\n"); |
| else |
| /* Non MSI-X treated on interrupt as EQ share INT */ |
| return IRQ_NONE; |
| } |
| |
| return IRQ_HANDLED; |
| } /* lpfc_sli4_sp_intr_handler */ |
| |
| /** |
| * lpfc_sli4_fp_intr_handler - Fast-path interrupt handler to SLI-4 device |
| * @irq: Interrupt number. |
| * @dev_id: The device context pointer. |
| * |
| * This function is directly called from the PCI layer as an interrupt |
| * service routine when device with SLI-4 interface spec is enabled with |
| * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB |
| * ring event in the HBA. However, when the device is enabled with either |
| * MSI or Pin-IRQ interrupt mode, this function is called as part of the |
| * device-level interrupt handler. When the PCI slot is in error recovery |
| * or the HBA is undergoing initialization, the interrupt handler will not |
| * process the interrupt. The SCSI FCP fast-path ring event are handled in |
| * the intrrupt context. This function is called without any lock held. |
| * It gets the hbalock to access and update SLI data structures. Note that, |
| * the FCP EQ to FCP CQ are one-to-one map such that the FCP EQ index is |
| * equal to that of FCP CQ index. |
| * |
| * This function returns IRQ_HANDLED when interrupt is handled else it |
| * returns IRQ_NONE. |
| **/ |
| irqreturn_t |
| lpfc_sli4_fp_intr_handler(int irq, void *dev_id) |
| { |
| struct lpfc_hba *phba; |
| struct lpfc_fcp_eq_hdl *fcp_eq_hdl; |
| struct lpfc_queue *fpeq; |
| struct lpfc_eqe *eqe; |
| unsigned long iflag; |
| int ecount = 0; |
| uint32_t fcp_eqidx; |
| |
| /* Get the driver's phba structure from the dev_id */ |
| fcp_eq_hdl = (struct lpfc_fcp_eq_hdl *)dev_id; |
| phba = fcp_eq_hdl->phba; |
| fcp_eqidx = fcp_eq_hdl->idx; |
| |
| if (unlikely(!phba)) |
| return IRQ_NONE; |
| |
| /* Get to the EQ struct associated with this vector */ |
| fpeq = phba->sli4_hba.fp_eq[fcp_eqidx]; |
| |
| /* Check device state for handling interrupt */ |
| if (unlikely(lpfc_intr_state_check(phba))) { |
| /* Check again for link_state with lock held */ |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| if (phba->link_state < LPFC_LINK_DOWN) |
| /* Flush, clear interrupt, and rearm the EQ */ |
| lpfc_sli4_eq_flush(phba, fpeq); |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return IRQ_NONE; |
| } |
| |
| /* |
| * Process all the event on FCP fast-path EQ |
| */ |
| while ((eqe = lpfc_sli4_eq_get(fpeq))) { |
| lpfc_sli4_fp_handle_eqe(phba, eqe, fcp_eqidx); |
| if (!(++ecount % LPFC_GET_QE_REL_INT)) |
| lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_NOARM); |
| } |
| |
| /* Always clear and re-arm the fast-path EQ */ |
| lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_REARM); |
| |
| if (unlikely(ecount == 0)) { |
| if (phba->intr_type == MSIX) |
| /* MSI-X treated interrupt served as no EQ share INT */ |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "0358 MSI-X interrupt with no EQE\n"); |
| else |
| /* Non MSI-X treated on interrupt as EQ share INT */ |
| return IRQ_NONE; |
| } |
| |
| return IRQ_HANDLED; |
| } /* lpfc_sli4_fp_intr_handler */ |
| |
| /** |
| * lpfc_sli4_intr_handler - Device-level interrupt handler for SLI-4 device |
| * @irq: Interrupt number. |
| * @dev_id: The device context pointer. |
| * |
| * This function is the device-level interrupt handler to device with SLI-4 |
| * interface spec, called from the PCI layer when either MSI or Pin-IRQ |
| * interrupt mode is enabled and there is an event in the HBA which requires |
| * driver attention. This function invokes the slow-path interrupt attention |
| * handling function and fast-path interrupt attention handling function in |
| * turn to process the relevant HBA attention events. This function is called |
| * without any lock held. It gets the hbalock to access and update SLI data |
| * structures. |
| * |
| * This function returns IRQ_HANDLED when interrupt is handled, else it |
| * returns IRQ_NONE. |
| **/ |
| irqreturn_t |
| lpfc_sli4_intr_handler(int irq, void *dev_id) |
| { |
| struct lpfc_hba *phba; |
| irqreturn_t sp_irq_rc, fp_irq_rc; |
| bool fp_handled = false; |
| uint32_t fcp_eqidx; |
| |
| /* Get the driver's phba structure from the dev_id */ |
| phba = (struct lpfc_hba *)dev_id; |
| |
| if (unlikely(!phba)) |
| return IRQ_NONE; |
| |
| /* |
| * Invokes slow-path host attention interrupt handling as appropriate. |
| */ |
| sp_irq_rc = lpfc_sli4_sp_intr_handler(irq, dev_id); |
| |
| /* |
| * Invoke fast-path host attention interrupt handling as appropriate. |
| */ |
| for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) { |
| fp_irq_rc = lpfc_sli4_fp_intr_handler(irq, |
| &phba->sli4_hba.fcp_eq_hdl[fcp_eqidx]); |
| if (fp_irq_rc == IRQ_HANDLED) |
| fp_handled |= true; |
| } |
| |
| return (fp_handled == true) ? IRQ_HANDLED : sp_irq_rc; |
| } /* lpfc_sli4_intr_handler */ |
| |
| /** |
| * lpfc_sli4_queue_free - free a queue structure and associated memory |
| * @queue: The queue structure to free. |
| * |
| * This function frees a queue structure and the DMAable memeory used for |
| * the host resident queue. This function must be called after destroying the |
| * queue on the HBA. |
| **/ |
| void |
| lpfc_sli4_queue_free(struct lpfc_queue *queue) |
| { |
| struct lpfc_dmabuf *dmabuf; |
| |
| if (!queue) |
| return; |
| |
| while (!list_empty(&queue->page_list)) { |
| list_remove_head(&queue->page_list, dmabuf, struct lpfc_dmabuf, |
| list); |
| dma_free_coherent(&queue->phba->pcidev->dev, PAGE_SIZE, |
| dmabuf->virt, dmabuf->phys); |
| kfree(dmabuf); |
| } |
| kfree(queue); |
| return; |
| } |
| |
| /** |
| * lpfc_sli4_queue_alloc - Allocate and initialize a queue structure |
| * @phba: The HBA that this queue is being created on. |
| * @entry_size: The size of each queue entry for this queue. |
| * @entry count: The number of entries that this queue will handle. |
| * |
| * This function allocates a queue structure and the DMAable memory used for |
| * the host resident queue. This function must be called before creating the |
| * queue on the HBA. |
| **/ |
| struct lpfc_queue * |
| lpfc_sli4_queue_alloc(struct lpfc_hba *phba, uint32_t entry_size, |
| uint32_t entry_count) |
| { |
| struct lpfc_queue *queue; |
| struct lpfc_dmabuf *dmabuf; |
| int x, total_qe_count; |
| void *dma_pointer; |
| |
| |
| queue = kzalloc(sizeof(struct lpfc_queue) + |
| (sizeof(union sli4_qe) * entry_count), GFP_KERNEL); |
| if (!queue) |
| return NULL; |
| queue->page_count = (PAGE_ALIGN(entry_size * entry_count))/PAGE_SIZE; |
| INIT_LIST_HEAD(&queue->list); |
| INIT_LIST_HEAD(&queue->page_list); |
| INIT_LIST_HEAD(&queue->child_list); |
| for (x = 0, total_qe_count = 0; x < queue->page_count; x++) { |
| dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); |
| if (!dmabuf) |
| goto out_fail; |
| dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, |
| PAGE_SIZE, &dmabuf->phys, |
| GFP_KERNEL); |
| if (!dmabuf->virt) { |
| kfree(dmabuf); |
| goto out_fail; |
| } |
| memset(dmabuf->virt, 0, PAGE_SIZE); |
| dmabuf->buffer_tag = x; |
| list_add_tail(&dmabuf->list, &queue->page_list); |
| /* initialize queue's entry array */ |
| dma_pointer = dmabuf->virt; |
| for (; total_qe_count < entry_count && |
| dma_pointer < (PAGE_SIZE + dmabuf->virt); |
| total_qe_count++, dma_pointer += entry_size) { |
| queue->qe[total_qe_count].address = dma_pointer; |
| } |
| } |
| queue->entry_size = entry_size; |
| queue->entry_count = entry_count; |
| queue->phba = phba; |
| |
| return queue; |
| out_fail: |
| lpfc_sli4_queue_free(queue); |
| return NULL; |
| } |
| |
| /** |
| * lpfc_eq_create - Create an Event Queue on the HBA |
| * @phba: HBA structure that indicates port to create a queue on. |
| * @eq: The queue structure to use to create the event queue. |
| * @imax: The maximum interrupt per second limit. |
| * |
| * This function creates an event queue, as detailed in @eq, on a port, |
| * described by @phba by sending an EQ_CREATE mailbox command to the HBA. |
| * |
| * The @phba struct is used to send mailbox command to HBA. The @eq struct |
| * is used to get the entry count and entry size that are necessary to |
| * determine the number of pages to allocate and use for this queue. This |
| * function will send the EQ_CREATE mailbox command to the HBA to setup the |
| * event queue. This function is asynchronous and will wait for the mailbox |
| * command to finish before continuing. |
| * |
| * On success this function will return a zero. If unable to allocate enough |
| * memory this function will return ENOMEM. If the queue create mailbox command |
| * fails this function will return ENXIO. |
| **/ |
| uint32_t |
| lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint16_t imax) |
| { |
| struct lpfc_mbx_eq_create *eq_create; |
| LPFC_MBOXQ_t *mbox; |
| int rc, length, status = 0; |
| struct lpfc_dmabuf *dmabuf; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| uint16_t dmult; |
| |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| length = (sizeof(struct lpfc_mbx_eq_create) - |
| sizeof(struct lpfc_sli4_cfg_mhdr)); |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, |
| LPFC_MBOX_OPCODE_EQ_CREATE, |
| length, LPFC_SLI4_MBX_EMBED); |
| eq_create = &mbox->u.mqe.un.eq_create; |
| bf_set(lpfc_mbx_eq_create_num_pages, &eq_create->u.request, |
| eq->page_count); |
| bf_set(lpfc_eq_context_size, &eq_create->u.request.context, |
| LPFC_EQE_SIZE); |
| bf_set(lpfc_eq_context_valid, &eq_create->u.request.context, 1); |
| /* Calculate delay multiper from maximum interrupt per second */ |
| dmult = LPFC_DMULT_CONST/imax - 1; |
| bf_set(lpfc_eq_context_delay_multi, &eq_create->u.request.context, |
| dmult); |
| switch (eq->entry_count) { |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0360 Unsupported EQ count. (%d)\n", |
| eq->entry_count); |
| if (eq->entry_count < 256) |
| return -EINVAL; |
| /* otherwise default to smallest count (drop through) */ |
| case 256: |
| bf_set(lpfc_eq_context_count, &eq_create->u.request.context, |
| LPFC_EQ_CNT_256); |
| break; |
| case 512: |
| bf_set(lpfc_eq_context_count, &eq_create->u.request.context, |
| LPFC_EQ_CNT_512); |
| break; |
| case 1024: |
| bf_set(lpfc_eq_context_count, &eq_create->u.request.context, |
| LPFC_EQ_CNT_1024); |
| break; |
| case 2048: |
| bf_set(lpfc_eq_context_count, &eq_create->u.request.context, |
| LPFC_EQ_CNT_2048); |
| break; |
| case 4096: |
| bf_set(lpfc_eq_context_count, &eq_create->u.request.context, |
| LPFC_EQ_CNT_4096); |
| break; |
| } |
| list_for_each_entry(dmabuf, &eq->page_list, list) { |
| eq_create->u.request.page[dmabuf->buffer_tag].addr_lo = |
| putPaddrLow(dmabuf->phys); |
| eq_create->u.request.page[dmabuf->buffer_tag].addr_hi = |
| putPaddrHigh(dmabuf->phys); |
| } |
| mbox->vport = phba->pport; |
| mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| mbox->context1 = NULL; |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); |
| shdr = (union lpfc_sli4_cfg_shdr *) &eq_create->header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2500 EQ_CREATE mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| status = -ENXIO; |
| } |
| eq->type = LPFC_EQ; |
| eq->subtype = LPFC_NONE; |
| eq->queue_id = bf_get(lpfc_mbx_eq_create_q_id, &eq_create->u.response); |
| if (eq->queue_id == 0xFFFF) |
| status = -ENXIO; |
| eq->host_index = 0; |
| eq->hba_index = 0; |
| |
| mempool_free(mbox, phba->mbox_mem_pool); |
| return status; |
| } |
| |
| /** |
| * lpfc_cq_create - Create a Completion Queue on the HBA |
| * @phba: HBA structure that indicates port to create a queue on. |
| * @cq: The queue structure to use to create the completion queue. |
| * @eq: The event queue to bind this completion queue to. |
| * |
| * This function creates a completion queue, as detailed in @wq, on a port, |
| * described by @phba by sending a CQ_CREATE mailbox command to the HBA. |
| * |
| * The @phba struct is used to send mailbox command to HBA. The @cq struct |
| * is used to get the entry count and entry size that are necessary to |
| * determine the number of pages to allocate and use for this queue. The @eq |
| * is used to indicate which event queue to bind this completion queue to. This |
| * function will send the CQ_CREATE mailbox command to the HBA to setup the |
| * completion queue. This function is asynchronous and will wait for the mailbox |
| * command to finish before continuing. |
| * |
| * On success this function will return a zero. If unable to allocate enough |
| * memory this function will return ENOMEM. If the queue create mailbox command |
| * fails this function will return ENXIO. |
| **/ |
| uint32_t |
| lpfc_cq_create(struct lpfc_hba *phba, struct lpfc_queue *cq, |
| struct lpfc_queue *eq, uint32_t type, uint32_t subtype) |
| { |
| struct lpfc_mbx_cq_create *cq_create; |
| struct lpfc_dmabuf *dmabuf; |
| LPFC_MBOXQ_t *mbox; |
| int rc, length, status = 0; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| length = (sizeof(struct lpfc_mbx_cq_create) - |
| sizeof(struct lpfc_sli4_cfg_mhdr)); |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, |
| LPFC_MBOX_OPCODE_CQ_CREATE, |
| length, LPFC_SLI4_MBX_EMBED); |
| cq_create = &mbox->u.mqe.un.cq_create; |
| bf_set(lpfc_mbx_cq_create_num_pages, &cq_create->u.request, |
| cq->page_count); |
| bf_set(lpfc_cq_context_event, &cq_create->u.request.context, 1); |
| bf_set(lpfc_cq_context_valid, &cq_create->u.request.context, 1); |
| bf_set(lpfc_cq_eq_id, &cq_create->u.request.context, eq->queue_id); |
| switch (cq->entry_count) { |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0361 Unsupported CQ count. (%d)\n", |
| cq->entry_count); |
| if (cq->entry_count < 256) |
| return -EINVAL; |
| /* otherwise default to smallest count (drop through) */ |
| case 256: |
| bf_set(lpfc_cq_context_count, &cq_create->u.request.context, |
| LPFC_CQ_CNT_256); |
| break; |
| case 512: |
| bf_set(lpfc_cq_context_count, &cq_create->u.request.context, |
| LPFC_CQ_CNT_512); |
| break; |
| case 1024: |
| bf_set(lpfc_cq_context_count, &cq_create->u.request.context, |
| LPFC_CQ_CNT_1024); |
| break; |
| } |
| list_for_each_entry(dmabuf, &cq->page_list, list) { |
| cq_create->u.request.page[dmabuf->buffer_tag].addr_lo = |
| putPaddrLow(dmabuf->phys); |
| cq_create->u.request.page[dmabuf->buffer_tag].addr_hi = |
| putPaddrHigh(dmabuf->phys); |
| } |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); |
| |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) &cq_create->header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2501 CQ_CREATE mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| status = -ENXIO; |
| goto out; |
| } |
| cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response); |
| if (cq->queue_id == 0xFFFF) { |
| status = -ENXIO; |
| goto out; |
| } |
| /* link the cq onto the parent eq child list */ |
| list_add_tail(&cq->list, &eq->child_list); |
| /* Set up completion queue's type and subtype */ |
| cq->type = type; |
| cq->subtype = subtype; |
| cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response); |
| cq->host_index = 0; |
| cq->hba_index = 0; |
| |
| out: |
| mempool_free(mbox, phba->mbox_mem_pool); |
| return status; |
| } |
| |
| /** |
| * lpfc_mq_create - Create a mailbox Queue on the HBA |
| * @phba: HBA structure that indicates port to create a queue on. |
| * @mq: The queue structure to use to create the mailbox queue. |
| * |
| * This function creates a mailbox queue, as detailed in @mq, on a port, |
| * described by @phba by sending a MQ_CREATE mailbox command to the HBA. |
| * |
| * The @phba struct is used to send mailbox command to HBA. The @cq struct |
| * is used to get the entry count and entry size that are necessary to |
| * determine the number of pages to allocate and use for this queue. This |
| * function will send the MQ_CREATE mailbox command to the HBA to setup the |
| * mailbox queue. This function is asynchronous and will wait for the mailbox |
| * command to finish before continuing. |
| * |
| * On success this function will return a zero. If unable to allocate enough |
| * memory this function will return ENOMEM. If the queue create mailbox command |
| * fails this function will return ENXIO. |
| **/ |
| uint32_t |
| lpfc_mq_create(struct lpfc_hba *phba, struct lpfc_queue *mq, |
| struct lpfc_queue *cq, uint32_t subtype) |
| { |
| struct lpfc_mbx_mq_create *mq_create; |
| struct lpfc_dmabuf *dmabuf; |
| LPFC_MBOXQ_t *mbox; |
| int rc, length, status = 0; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| length = (sizeof(struct lpfc_mbx_mq_create) - |
| sizeof(struct lpfc_sli4_cfg_mhdr)); |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, |
| LPFC_MBOX_OPCODE_MQ_CREATE, |
| length, LPFC_SLI4_MBX_EMBED); |
| mq_create = &mbox->u.mqe.un.mq_create; |
| bf_set(lpfc_mbx_mq_create_num_pages, &mq_create->u.request, |
| mq->page_count); |
| bf_set(lpfc_mq_context_cq_id, &mq_create->u.request.context, |
| cq->queue_id); |
| bf_set(lpfc_mq_context_valid, &mq_create->u.request.context, 1); |
| switch (mq->entry_count) { |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0362 Unsupported MQ count. (%d)\n", |
| mq->entry_count); |
| if (mq->entry_count < 16) |
| return -EINVAL; |
| /* otherwise default to smallest count (drop through) */ |
| case 16: |
| bf_set(lpfc_mq_context_count, &mq_create->u.request.context, |
| LPFC_MQ_CNT_16); |
| break; |
| case 32: |
| bf_set(lpfc_mq_context_count, &mq_create->u.request.context, |
| LPFC_MQ_CNT_32); |
| break; |
| case 64: |
| bf_set(lpfc_mq_context_count, &mq_create->u.request.context, |
| LPFC_MQ_CNT_64); |
| break; |
| case 128: |
| bf_set(lpfc_mq_context_count, &mq_create->u.request.context, |
| LPFC_MQ_CNT_128); |
| break; |
| } |
| list_for_each_entry(dmabuf, &mq->page_list, list) { |
| mq_create->u.request.page[dmabuf->buffer_tag].addr_lo = |
| putPaddrLow(dmabuf->phys); |
| mq_create->u.request.page[dmabuf->buffer_tag].addr_hi = |
| putPaddrHigh(dmabuf->phys); |
| } |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) &mq_create->header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2502 MQ_CREATE mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| status = -ENXIO; |
| goto out; |
| } |
| mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id, &mq_create->u.response); |
| if (mq->queue_id == 0xFFFF) { |
| status = -ENXIO; |
| goto out; |
| } |
| mq->type = LPFC_MQ; |
| mq->subtype = subtype; |
| mq->host_index = 0; |
| mq->hba_index = 0; |
| |
| /* link the mq onto the parent cq child list */ |
| list_add_tail(&mq->list, &cq->child_list); |
| out: |
| mempool_free(mbox, phba->mbox_mem_pool); |
| return status; |
| } |
| |
| /** |
| * lpfc_wq_create - Create a Work Queue on the HBA |
| * @phba: HBA structure that indicates port to create a queue on. |
| * @wq: The queue structure to use to create the work queue. |
| * @cq: The completion queue to bind this work queue to. |
| * @subtype: The subtype of the work queue indicating its functionality. |
| * |
| * This function creates a work queue, as detailed in @wq, on a port, described |
| * by @phba by sending a WQ_CREATE mailbox command to the HBA. |
| * |
| * The @phba struct is used to send mailbox command to HBA. The @wq struct |
| * is used to get the entry count and entry size that are necessary to |
| * determine the number of pages to allocate and use for this queue. The @cq |
| * is used to indicate which completion queue to bind this work queue to. This |
| * function will send the WQ_CREATE mailbox command to the HBA to setup the |
| * work queue. This function is asynchronous and will wait for the mailbox |
| * command to finish before continuing. |
| * |
| * On success this function will return a zero. If unable to allocate enough |
| * memory this function will return ENOMEM. If the queue create mailbox command |
| * fails this function will return ENXIO. |
| **/ |
| uint32_t |
| lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq, |
| struct lpfc_queue *cq, uint32_t subtype) |
| { |
| struct lpfc_mbx_wq_create *wq_create; |
| struct lpfc_dmabuf *dmabuf; |
| LPFC_MBOXQ_t *mbox; |
| int rc, length, status = 0; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| length = (sizeof(struct lpfc_mbx_wq_create) - |
| sizeof(struct lpfc_sli4_cfg_mhdr)); |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_WQ_CREATE, |
| length, LPFC_SLI4_MBX_EMBED); |
| wq_create = &mbox->u.mqe.un.wq_create; |
| bf_set(lpfc_mbx_wq_create_num_pages, &wq_create->u.request, |
| wq->page_count); |
| bf_set(lpfc_mbx_wq_create_cq_id, &wq_create->u.request, |
| cq->queue_id); |
| list_for_each_entry(dmabuf, &wq->page_list, list) { |
| wq_create->u.request.page[dmabuf->buffer_tag].addr_lo = |
| putPaddrLow(dmabuf->phys); |
| wq_create->u.request.page[dmabuf->buffer_tag].addr_hi = |
| putPaddrHigh(dmabuf->phys); |
| } |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) &wq_create->header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2503 WQ_CREATE mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| status = -ENXIO; |
| goto out; |
| } |
| wq->queue_id = bf_get(lpfc_mbx_wq_create_q_id, &wq_create->u.response); |
| if (wq->queue_id == 0xFFFF) { |
| status = -ENXIO; |
| goto out; |
| } |
| wq->type = LPFC_WQ; |
| wq->subtype = subtype; |
| wq->host_index = 0; |
| wq->hba_index = 0; |
| |
| /* link the wq onto the parent cq child list */ |
| list_add_tail(&wq->list, &cq->child_list); |
| out: |
| mempool_free(mbox, phba->mbox_mem_pool); |
| return status; |
| } |
| |
| /** |
| * lpfc_rq_create - Create a Receive Queue on the HBA |
| * @phba: HBA structure that indicates port to create a queue on. |
| * @hrq: The queue structure to use to create the header receive queue. |
| * @drq: The queue structure to use to create the data receive queue. |
| * @cq: The completion queue to bind this work queue to. |
| * |
| * This function creates a receive buffer queue pair , as detailed in @hrq and |
| * @drq, on a port, described by @phba by sending a RQ_CREATE mailbox command |
| * to the HBA. |
| * |
| * The @phba struct is used to send mailbox command to HBA. The @drq and @hrq |
| * struct is used to get the entry count that is necessary to determine the |
| * number of pages to use for this queue. The @cq is used to indicate which |
| * completion queue to bind received buffers that are posted to these queues to. |
| * This function will send the RQ_CREATE mailbox command to the HBA to setup the |
| * receive queue pair. This function is asynchronous and will wait for the |
| * mailbox command to finish before continuing. |
| * |
| * On success this function will return a zero. If unable to allocate enough |
| * memory this function will return ENOMEM. If the queue create mailbox command |
| * fails this function will return ENXIO. |
| **/ |
| uint32_t |
| lpfc_rq_create(struct lpfc_hba *phba, struct lpfc_queue *hrq, |
| struct lpfc_queue *drq, struct lpfc_queue *cq, uint32_t subtype) |
| { |
| struct lpfc_mbx_rq_create *rq_create; |
| struct lpfc_dmabuf *dmabuf; |
| LPFC_MBOXQ_t *mbox; |
| int rc, length, status = 0; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| if (hrq->entry_count != drq->entry_count) |
| return -EINVAL; |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| length = (sizeof(struct lpfc_mbx_rq_create) - |
| sizeof(struct lpfc_sli4_cfg_mhdr)); |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_RQ_CREATE, |
| length, LPFC_SLI4_MBX_EMBED); |
| rq_create = &mbox->u.mqe.un.rq_create; |
| switch (hrq->entry_count) { |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2535 Unsupported RQ count. (%d)\n", |
| hrq->entry_count); |
| if (hrq->entry_count < 512) |
| return -EINVAL; |
| /* otherwise default to smallest count (drop through) */ |
| case 512: |
| bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, |
| LPFC_RQ_RING_SIZE_512); |
| break; |
| case 1024: |
| bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, |
| LPFC_RQ_RING_SIZE_1024); |
| break; |
| case 2048: |
| bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, |
| LPFC_RQ_RING_SIZE_2048); |
| break; |
| case 4096: |
| bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, |
| LPFC_RQ_RING_SIZE_4096); |
| break; |
| } |
| bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context, |
| cq->queue_id); |
| bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request, |
| hrq->page_count); |
| bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context, |
| LPFC_HDR_BUF_SIZE); |
| list_for_each_entry(dmabuf, &hrq->page_list, list) { |
| rq_create->u.request.page[dmabuf->buffer_tag].addr_lo = |
| putPaddrLow(dmabuf->phys); |
| rq_create->u.request.page[dmabuf->buffer_tag].addr_hi = |
| putPaddrHigh(dmabuf->phys); |
| } |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2504 RQ_CREATE mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| status = -ENXIO; |
| goto out; |
| } |
| hrq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response); |
| if (hrq->queue_id == 0xFFFF) { |
| status = -ENXIO; |
| goto out; |
| } |
| hrq->type = LPFC_HRQ; |
| hrq->subtype = subtype; |
| hrq->host_index = 0; |
| hrq->hba_index = 0; |
| |
| /* now create the data queue */ |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_RQ_CREATE, |
| length, LPFC_SLI4_MBX_EMBED); |
| switch (drq->entry_count) { |
| default: |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2536 Unsupported RQ count. (%d)\n", |
| drq->entry_count); |
| if (drq->entry_count < 512) |
| return -EINVAL; |
| /* otherwise default to smallest count (drop through) */ |
| case 512: |
| bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, |
| LPFC_RQ_RING_SIZE_512); |
| break; |
| case 1024: |
| bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, |
| LPFC_RQ_RING_SIZE_1024); |
| break; |
| case 2048: |
| bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, |
| LPFC_RQ_RING_SIZE_2048); |
| break; |
| case 4096: |
| bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context, |
| LPFC_RQ_RING_SIZE_4096); |
| break; |
| } |
| bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context, |
| cq->queue_id); |
| bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request, |
| drq->page_count); |
| bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context, |
| LPFC_DATA_BUF_SIZE); |
| list_for_each_entry(dmabuf, &drq->page_list, list) { |
| rq_create->u.request.page[dmabuf->buffer_tag].addr_lo = |
| putPaddrLow(dmabuf->phys); |
| rq_create->u.request.page[dmabuf->buffer_tag].addr_hi = |
| putPaddrHigh(dmabuf->phys); |
| } |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| status = -ENXIO; |
| goto out; |
| } |
| drq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response); |
| if (drq->queue_id == 0xFFFF) { |
| status = -ENXIO; |
| goto out; |
| } |
| drq->type = LPFC_DRQ; |
| drq->subtype = subtype; |
| drq->host_index = 0; |
| drq->hba_index = 0; |
| |
| /* link the header and data RQs onto the parent cq child list */ |
| list_add_tail(&hrq->list, &cq->child_list); |
| list_add_tail(&drq->list, &cq->child_list); |
| |
| out: |
| mempool_free(mbox, phba->mbox_mem_pool); |
| return status; |
| } |
| |
| /** |
| * lpfc_eq_destroy - Destroy an event Queue on the HBA |
| * @eq: The queue structure associated with the queue to destroy. |
| * |
| * This function destroys a queue, as detailed in @eq by sending an mailbox |
| * command, specific to the type of queue, to the HBA. |
| * |
| * The @eq struct is used to get the queue ID of the queue to destroy. |
| * |
| * On success this function will return a zero. If the queue destroy mailbox |
| * command fails this function will return ENXIO. |
| **/ |
| uint32_t |
| lpfc_eq_destroy(struct lpfc_hba *phba, struct lpfc_queue *eq) |
| { |
| LPFC_MBOXQ_t *mbox; |
| int rc, length, status = 0; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| if (!eq) |
| return -ENODEV; |
| mbox = mempool_alloc(eq->phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| length = (sizeof(struct lpfc_mbx_eq_destroy) - |
| sizeof(struct lpfc_sli4_cfg_mhdr)); |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, |
| LPFC_MBOX_OPCODE_EQ_DESTROY, |
| length, LPFC_SLI4_MBX_EMBED); |
| bf_set(lpfc_mbx_eq_destroy_q_id, &mbox->u.mqe.un.eq_destroy.u.request, |
| eq->queue_id); |
| mbox->vport = eq->phba->pport; |
| mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| |
| rc = lpfc_sli_issue_mbox(eq->phba, mbox, MBX_POLL); |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) |
| &mbox->u.mqe.un.eq_destroy.header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2505 EQ_DESTROY mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| status = -ENXIO; |
| } |
| |
| /* Remove eq from any list */ |
| list_del_init(&eq->list); |
| mempool_free(mbox, eq->phba->mbox_mem_pool); |
| return status; |
| } |
| |
| /** |
| * lpfc_cq_destroy - Destroy a Completion Queue on the HBA |
| * @cq: The queue structure associated with the queue to destroy. |
| * |
| * This function destroys a queue, as detailed in @cq by sending an mailbox |
| * command, specific to the type of queue, to the HBA. |
| * |
| * The @cq struct is used to get the queue ID of the queue to destroy. |
| * |
| * On success this function will return a zero. If the queue destroy mailbox |
| * command fails this function will return ENXIO. |
| **/ |
| uint32_t |
| lpfc_cq_destroy(struct lpfc_hba *phba, struct lpfc_queue *cq) |
| { |
| LPFC_MBOXQ_t *mbox; |
| int rc, length, status = 0; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| if (!cq) |
| return -ENODEV; |
| mbox = mempool_alloc(cq->phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| length = (sizeof(struct lpfc_mbx_cq_destroy) - |
| sizeof(struct lpfc_sli4_cfg_mhdr)); |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, |
| LPFC_MBOX_OPCODE_CQ_DESTROY, |
| length, LPFC_SLI4_MBX_EMBED); |
| bf_set(lpfc_mbx_cq_destroy_q_id, &mbox->u.mqe.un.cq_destroy.u.request, |
| cq->queue_id); |
| mbox->vport = cq->phba->pport; |
| mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| rc = lpfc_sli_issue_mbox(cq->phba, mbox, MBX_POLL); |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) |
| &mbox->u.mqe.un.wq_create.header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2506 CQ_DESTROY mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| status = -ENXIO; |
| } |
| /* Remove cq from any list */ |
| list_del_init(&cq->list); |
| mempool_free(mbox, cq->phba->mbox_mem_pool); |
| return status; |
| } |
| |
| /** |
| * lpfc_mq_destroy - Destroy a Mailbox Queue on the HBA |
| * @qm: The queue structure associated with the queue to destroy. |
| * |
| * This function destroys a queue, as detailed in @mq by sending an mailbox |
| * command, specific to the type of queue, to the HBA. |
| * |
| * The @mq struct is used to get the queue ID of the queue to destroy. |
| * |
| * On success this function will return a zero. If the queue destroy mailbox |
| * command fails this function will return ENXIO. |
| **/ |
| uint32_t |
| lpfc_mq_destroy(struct lpfc_hba *phba, struct lpfc_queue *mq) |
| { |
| LPFC_MBOXQ_t *mbox; |
| int rc, length, status = 0; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| if (!mq) |
| return -ENODEV; |
| mbox = mempool_alloc(mq->phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| length = (sizeof(struct lpfc_mbx_mq_destroy) - |
| sizeof(struct lpfc_sli4_cfg_mhdr)); |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, |
| LPFC_MBOX_OPCODE_MQ_DESTROY, |
| length, LPFC_SLI4_MBX_EMBED); |
| bf_set(lpfc_mbx_mq_destroy_q_id, &mbox->u.mqe.un.mq_destroy.u.request, |
| mq->queue_id); |
| mbox->vport = mq->phba->pport; |
| mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| rc = lpfc_sli_issue_mbox(mq->phba, mbox, MBX_POLL); |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) |
| &mbox->u.mqe.un.mq_destroy.header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2507 MQ_DESTROY mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| status = -ENXIO; |
| } |
| /* Remove mq from any list */ |
| list_del_init(&mq->list); |
| mempool_free(mbox, mq->phba->mbox_mem_pool); |
| return status; |
| } |
| |
| /** |
| * lpfc_wq_destroy - Destroy a Work Queue on the HBA |
| * @wq: The queue structure associated with the queue to destroy. |
| * |
| * This function destroys a queue, as detailed in @wq by sending an mailbox |
| * command, specific to the type of queue, to the HBA. |
| * |
| * The @wq struct is used to get the queue ID of the queue to destroy. |
| * |
| * On success this function will return a zero. If the queue destroy mailbox |
| * command fails this function will return ENXIO. |
| **/ |
| uint32_t |
| lpfc_wq_destroy(struct lpfc_hba *phba, struct lpfc_queue *wq) |
| { |
| LPFC_MBOXQ_t *mbox; |
| int rc, length, status = 0; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| if (!wq) |
| return -ENODEV; |
| mbox = mempool_alloc(wq->phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| length = (sizeof(struct lpfc_mbx_wq_destroy) - |
| sizeof(struct lpfc_sli4_cfg_mhdr)); |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_WQ_DESTROY, |
| length, LPFC_SLI4_MBX_EMBED); |
| bf_set(lpfc_mbx_wq_destroy_q_id, &mbox->u.mqe.un.wq_destroy.u.request, |
| wq->queue_id); |
| mbox->vport = wq->phba->pport; |
| mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| rc = lpfc_sli_issue_mbox(wq->phba, mbox, MBX_POLL); |
| shdr = (union lpfc_sli4_cfg_shdr *) |
| &mbox->u.mqe.un.wq_destroy.header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2508 WQ_DESTROY mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| status = -ENXIO; |
| } |
| /* Remove wq from any list */ |
| list_del_init(&wq->list); |
| mempool_free(mbox, wq->phba->mbox_mem_pool); |
| return status; |
| } |
| |
| /** |
| * lpfc_rq_destroy - Destroy a Receive Queue on the HBA |
| * @rq: The queue structure associated with the queue to destroy. |
| * |
| * This function destroys a queue, as detailed in @rq by sending an mailbox |
| * command, specific to the type of queue, to the HBA. |
| * |
| * The @rq struct is used to get the queue ID of the queue to destroy. |
| * |
| * On success this function will return a zero. If the queue destroy mailbox |
| * command fails this function will return ENXIO. |
| **/ |
| uint32_t |
| lpfc_rq_destroy(struct lpfc_hba *phba, struct lpfc_queue *hrq, |
| struct lpfc_queue *drq) |
| { |
| LPFC_MBOXQ_t *mbox; |
| int rc, length, status = 0; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| if (!hrq || !drq) |
| return -ENODEV; |
| mbox = mempool_alloc(hrq->phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| length = (sizeof(struct lpfc_mbx_rq_destroy) - |
| sizeof(struct mbox_header)); |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_RQ_DESTROY, |
| length, LPFC_SLI4_MBX_EMBED); |
| bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request, |
| hrq->queue_id); |
| mbox->vport = hrq->phba->pport; |
| mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| rc = lpfc_sli_issue_mbox(hrq->phba, mbox, MBX_POLL); |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) |
| &mbox->u.mqe.un.rq_destroy.header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2509 RQ_DESTROY mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| if (rc != MBX_TIMEOUT) |
| mempool_free(mbox, hrq->phba->mbox_mem_pool); |
| return -ENXIO; |
| } |
| bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request, |
| drq->queue_id); |
| rc = lpfc_sli_issue_mbox(drq->phba, mbox, MBX_POLL); |
| shdr = (union lpfc_sli4_cfg_shdr *) |
| &mbox->u.mqe.un.rq_destroy.header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2510 RQ_DESTROY mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| status = -ENXIO; |
| } |
| list_del_init(&hrq->list); |
| list_del_init(&drq->list); |
| mempool_free(mbox, hrq->phba->mbox_mem_pool); |
| return status; |
| } |
| |
| /** |
| * lpfc_sli4_post_sgl - Post scatter gather list for an XRI to HBA |
| * @phba: The virtual port for which this call being executed. |
| * @pdma_phys_addr0: Physical address of the 1st SGL page. |
| * @pdma_phys_addr1: Physical address of the 2nd SGL page. |
| * @xritag: the xritag that ties this io to the SGL pages. |
| * |
| * This routine will post the sgl pages for the IO that has the xritag |
| * that is in the iocbq structure. The xritag is assigned during iocbq |
| * creation and persists for as long as the driver is loaded. |
| * if the caller has fewer than 256 scatter gather segments to map then |
| * pdma_phys_addr1 should be 0. |
| * If the caller needs to map more than 256 scatter gather segment then |
| * pdma_phys_addr1 should be a valid physical address. |
| * physical address for SGLs must be 64 byte aligned. |
| * If you are going to map 2 SGL's then the first one must have 256 entries |
| * the second sgl can have between 1 and 256 entries. |
| * |
| * Return codes: |
| * 0 - Success |
| * -ENXIO, -ENOMEM - Failure |
| **/ |
| int |
| lpfc_sli4_post_sgl(struct lpfc_hba *phba, |
| dma_addr_t pdma_phys_addr0, |
| dma_addr_t pdma_phys_addr1, |
| uint16_t xritag) |
| { |
| struct lpfc_mbx_post_sgl_pages *post_sgl_pages; |
| LPFC_MBOXQ_t *mbox; |
| int rc; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| if (xritag == NO_XRI) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0364 Invalid param:\n"); |
| return -EINVAL; |
| } |
| |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, |
| sizeof(struct lpfc_mbx_post_sgl_pages) - |
| sizeof(struct mbox_header), LPFC_SLI4_MBX_EMBED); |
| |
| post_sgl_pages = (struct lpfc_mbx_post_sgl_pages *) |
| &mbox->u.mqe.un.post_sgl_pages; |
| bf_set(lpfc_post_sgl_pages_xri, post_sgl_pages, xritag); |
| bf_set(lpfc_post_sgl_pages_xricnt, post_sgl_pages, 1); |
| |
| post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_lo = |
| cpu_to_le32(putPaddrLow(pdma_phys_addr0)); |
| post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_hi = |
| cpu_to_le32(putPaddrHigh(pdma_phys_addr0)); |
| |
| post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_lo = |
| cpu_to_le32(putPaddrLow(pdma_phys_addr1)); |
| post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_hi = |
| cpu_to_le32(putPaddrHigh(pdma_phys_addr1)); |
| if (!phba->sli4_hba.intr_enable) |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); |
| else |
| rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) &post_sgl_pages->header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (rc != MBX_TIMEOUT) |
| mempool_free(mbox, phba->mbox_mem_pool); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2511 POST_SGL mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| rc = -ENXIO; |
| } |
| return 0; |
| } |
| /** |
| * lpfc_sli4_remove_all_sgl_pages - Post scatter gather list for an XRI to HBA |
| * @phba: The virtual port for which this call being executed. |
| * |
| * This routine will remove all of the sgl pages registered with the hba. |
| * |
| * Return codes: |
| * 0 - Success |
| * -ENXIO, -ENOMEM - Failure |
| **/ |
| int |
| lpfc_sli4_remove_all_sgl_pages(struct lpfc_hba *phba) |
| { |
| LPFC_MBOXQ_t *mbox; |
| int rc; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return -ENOMEM; |
| |
| lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_REMOVE_SGL_PAGES, 0, |
| LPFC_SLI4_MBX_EMBED); |
| if (!phba->sli4_hba.intr_enable) |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); |
| else |
| rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) |
| &mbox->u.mqe.un.sli4_config.header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (rc != MBX_TIMEOUT) |
| mempool_free(mbox, phba->mbox_mem_pool); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2512 REMOVE_ALL_SGL_PAGES mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| rc = -ENXIO; |
| } |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli4_next_xritag - Get an xritag for the io |
| * @phba: Pointer to HBA context object. |
| * |
| * This function gets an xritag for the iocb. If there is no unused xritag |
| * it will return 0xffff. |
| * The function returns the allocated xritag if successful, else returns zero. |
| * Zero is not a valid xritag. |
| * The caller is not required to hold any lock. |
| **/ |
| uint16_t |
| lpfc_sli4_next_xritag(struct lpfc_hba *phba) |
| { |
| uint16_t xritag; |
| |
| spin_lock_irq(&phba->hbalock); |
| xritag = phba->sli4_hba.next_xri; |
| if ((xritag != (uint16_t) -1) && xritag < |
| (phba->sli4_hba.max_cfg_param.max_xri |
| + phba->sli4_hba.max_cfg_param.xri_base)) { |
| phba->sli4_hba.next_xri++; |
| phba->sli4_hba.max_cfg_param.xri_used++; |
| spin_unlock_irq(&phba->hbalock); |
| return xritag; |
| } |
| spin_unlock_irq(&phba->hbalock); |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "2004 Failed to allocate XRI.last XRITAG is %d" |
| " Max XRI is %d, Used XRI is %d\n", |
| phba->sli4_hba.next_xri, |
| phba->sli4_hba.max_cfg_param.max_xri, |
| phba->sli4_hba.max_cfg_param.xri_used); |
| return -1; |
| } |
| |
| /** |
| * lpfc_sli4_post_sgl_list - post a block of sgl list to the firmware. |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This routine is invoked to post a block of driver's sgl pages to the |
| * HBA using non-embedded mailbox command. No Lock is held. This routine |
| * is only called when the driver is loading and after all IO has been |
| * stopped. |
| **/ |
| int |
| lpfc_sli4_post_sgl_list(struct lpfc_hba *phba) |
| { |
| struct lpfc_sglq *sglq_entry; |
| struct lpfc_mbx_post_uembed_sgl_page1 *sgl; |
| struct sgl_page_pairs *sgl_pg_pairs; |
| void *viraddr; |
| LPFC_MBOXQ_t *mbox; |
| uint32_t reqlen, alloclen, pg_pairs; |
| uint32_t mbox_tmo; |
| uint16_t xritag_start = 0; |
| int els_xri_cnt, rc = 0; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| /* The number of sgls to be posted */ |
| els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba); |
| |
| reqlen = els_xri_cnt * sizeof(struct sgl_page_pairs) + |
| sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t); |
| if (reqlen > PAGE_SIZE) { |
| lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, |
| "2559 Block sgl registration required DMA " |
| "size (%d) great than a page\n", reqlen); |
| return -ENOMEM; |
| } |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2560 Failed to allocate mbox cmd memory\n"); |
| return -ENOMEM; |
| } |
| |
| /* Allocate DMA memory and set up the non-embedded mailbox command */ |
| alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen, |
| LPFC_SLI4_MBX_NEMBED); |
| |
| if (alloclen < reqlen) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0285 Allocated DMA memory size (%d) is " |
| "less than the requested DMA memory " |
| "size (%d)\n", alloclen, reqlen); |
| lpfc_sli4_mbox_cmd_free(phba, mbox); |
| return -ENOMEM; |
| } |
| /* Get the first SGE entry from the non-embedded DMA memory */ |
| viraddr = mbox->sge_array->addr[0]; |
| |
| /* Set up the SGL pages in the non-embedded DMA pages */ |
| sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr; |
| sgl_pg_pairs = &sgl->sgl_pg_pairs; |
| |
| for (pg_pairs = 0; pg_pairs < els_xri_cnt; pg_pairs++) { |
| sglq_entry = phba->sli4_hba.lpfc_els_sgl_array[pg_pairs]; |
| /* Set up the sge entry */ |
| sgl_pg_pairs->sgl_pg0_addr_lo = |
| cpu_to_le32(putPaddrLow(sglq_entry->phys)); |
| sgl_pg_pairs->sgl_pg0_addr_hi = |
| cpu_to_le32(putPaddrHigh(sglq_entry->phys)); |
| sgl_pg_pairs->sgl_pg1_addr_lo = |
| cpu_to_le32(putPaddrLow(0)); |
| sgl_pg_pairs->sgl_pg1_addr_hi = |
| cpu_to_le32(putPaddrHigh(0)); |
| /* Keep the first xritag on the list */ |
| if (pg_pairs == 0) |
| xritag_start = sglq_entry->sli4_xritag; |
| sgl_pg_pairs++; |
| } |
| bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start); |
| bf_set(lpfc_post_sgl_pages_xricnt, sgl, els_xri_cnt); |
| /* Perform endian conversion if necessary */ |
| sgl->word0 = cpu_to_le32(sgl->word0); |
| |
| if (!phba->sli4_hba.intr_enable) |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); |
| else { |
| mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG); |
| rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); |
| } |
| shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (rc != MBX_TIMEOUT) |
| lpfc_sli4_mbox_cmd_free(phba, mbox); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2513 POST_SGL_BLOCK mailbox command failed " |
| "status x%x add_status x%x mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| rc = -ENXIO; |
| } |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli4_post_scsi_sgl_block - post a block of scsi sgl list to firmware |
| * @phba: pointer to lpfc hba data structure. |
| * @sblist: pointer to scsi buffer list. |
| * @count: number of scsi buffers on the list. |
| * |
| * This routine is invoked to post a block of @count scsi sgl pages from a |
| * SCSI buffer list @sblist to the HBA using non-embedded mailbox command. |
| * No Lock is held. |
| * |
| **/ |
| int |
| lpfc_sli4_post_scsi_sgl_block(struct lpfc_hba *phba, struct list_head *sblist, |
| int cnt) |
| { |
| struct lpfc_scsi_buf *psb; |
| struct lpfc_mbx_post_uembed_sgl_page1 *sgl; |
| struct sgl_page_pairs *sgl_pg_pairs; |
| void *viraddr; |
| LPFC_MBOXQ_t *mbox; |
| uint32_t reqlen, alloclen, pg_pairs; |
| uint32_t mbox_tmo; |
| uint16_t xritag_start = 0; |
| int rc = 0; |
| uint32_t shdr_status, shdr_add_status; |
| dma_addr_t pdma_phys_bpl1; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| /* Calculate the requested length of the dma memory */ |
| reqlen = cnt * sizeof(struct sgl_page_pairs) + |
| sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t); |
| if (reqlen > PAGE_SIZE) { |
| lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, |
| "0217 Block sgl registration required DMA " |
| "size (%d) great than a page\n", reqlen); |
| return -ENOMEM; |
| } |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0283 Failed to allocate mbox cmd memory\n"); |
| return -ENOMEM; |
| } |
| |
| /* Allocate DMA memory and set up the non-embedded mailbox command */ |
| alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen, |
| LPFC_SLI4_MBX_NEMBED); |
| |
| if (alloclen < reqlen) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2561 Allocated DMA memory size (%d) is " |
| "less than the requested DMA memory " |
| "size (%d)\n", alloclen, reqlen); |
| lpfc_sli4_mbox_cmd_free(phba, mbox); |
| return -ENOMEM; |
| } |
| /* Get the first SGE entry from the non-embedded DMA memory */ |
| viraddr = mbox->sge_array->addr[0]; |
| |
| /* Set up the SGL pages in the non-embedded DMA pages */ |
| sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr; |
| sgl_pg_pairs = &sgl->sgl_pg_pairs; |
| |
| pg_pairs = 0; |
| list_for_each_entry(psb, sblist, list) { |
| /* Set up the sge entry */ |
| sgl_pg_pairs->sgl_pg0_addr_lo = |
| cpu_to_le32(putPaddrLow(psb->dma_phys_bpl)); |
| sgl_pg_pairs->sgl_pg0_addr_hi = |
| cpu_to_le32(putPaddrHigh(psb->dma_phys_bpl)); |
| if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) |
| pdma_phys_bpl1 = psb->dma_phys_bpl + SGL_PAGE_SIZE; |
| else |
| pdma_phys_bpl1 = 0; |
| sgl_pg_pairs->sgl_pg1_addr_lo = |
| cpu_to_le32(putPaddrLow(pdma_phys_bpl1)); |
| sgl_pg_pairs->sgl_pg1_addr_hi = |
| cpu_to_le32(putPaddrHigh(pdma_phys_bpl1)); |
| /* Keep the first xritag on the list */ |
| if (pg_pairs == 0) |
| xritag_start = psb->cur_iocbq.sli4_xritag; |
| sgl_pg_pairs++; |
| pg_pairs++; |
| } |
| bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start); |
| bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs); |
| /* Perform endian conversion if necessary */ |
| sgl->word0 = cpu_to_le32(sgl->word0); |
| |
| if (!phba->sli4_hba.intr_enable) |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); |
| else { |
| mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG); |
| rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); |
| } |
| shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (rc != MBX_TIMEOUT) |
| lpfc_sli4_mbox_cmd_free(phba, mbox); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2564 POST_SGL_BLOCK mailbox command failed " |
| "status x%x add_status x%x mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| rc = -ENXIO; |
| } |
| return rc; |
| } |
| |
| /** |
| * lpfc_fc_frame_check - Check that this frame is a valid frame to handle |
| * @phba: pointer to lpfc_hba struct that the frame was received on |
| * @fc_hdr: A pointer to the FC Header data (In Big Endian Format) |
| * |
| * This function checks the fields in the @fc_hdr to see if the FC frame is a |
| * valid type of frame that the LPFC driver will handle. This function will |
| * return a zero if the frame is a valid frame or a non zero value when the |
| * frame does not pass the check. |
| **/ |
| static int |
| lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr) |
| { |
| char *rctl_names[] = FC_RCTL_NAMES_INIT; |
| char *type_names[] = FC_TYPE_NAMES_INIT; |
| struct fc_vft_header *fc_vft_hdr; |
| |
| switch (fc_hdr->fh_r_ctl) { |
| case FC_RCTL_DD_UNCAT: /* uncategorized information */ |
| case FC_RCTL_DD_SOL_DATA: /* solicited data */ |
| case FC_RCTL_DD_UNSOL_CTL: /* unsolicited control */ |
| case FC_RCTL_DD_SOL_CTL: /* solicited control or reply */ |
| case FC_RCTL_DD_UNSOL_DATA: /* unsolicited data */ |
| case FC_RCTL_DD_DATA_DESC: /* data descriptor */ |
| case FC_RCTL_DD_UNSOL_CMD: /* unsolicited command */ |
| case FC_RCTL_DD_CMD_STATUS: /* command status */ |
| case FC_RCTL_ELS_REQ: /* extended link services request */ |
| case FC_RCTL_ELS_REP: /* extended link services reply */ |
| case FC_RCTL_ELS4_REQ: /* FC-4 ELS request */ |
| case FC_RCTL_ELS4_REP: /* FC-4 ELS reply */ |
| case FC_RCTL_BA_NOP: /* basic link service NOP */ |
| case FC_RCTL_BA_ABTS: /* basic link service abort */ |
| case FC_RCTL_BA_RMC: /* remove connection */ |
| case FC_RCTL_BA_ACC: /* basic accept */ |
| case FC_RCTL_BA_RJT: /* basic reject */ |
| case FC_RCTL_BA_PRMT: |
| case FC_RCTL_ACK_1: /* acknowledge_1 */ |
| case FC_RCTL_ACK_0: /* acknowledge_0 */ |
| case FC_RCTL_P_RJT: /* port reject */ |
| case FC_RCTL_F_RJT: /* fabric reject */ |
| case FC_RCTL_P_BSY: /* port busy */ |
| case FC_RCTL_F_BSY: /* fabric busy to data frame */ |
| case FC_RCTL_F_BSYL: /* fabric busy to link control frame */ |
| case FC_RCTL_LCR: /* link credit reset */ |
| case FC_RCTL_END: /* end */ |
| break; |
| case FC_RCTL_VFTH: /* Virtual Fabric tagging Header */ |
| fc_vft_hdr = (struct fc_vft_header *)fc_hdr; |
| fc_hdr = &((struct fc_frame_header *)fc_vft_hdr)[1]; |
| return lpfc_fc_frame_check(phba, fc_hdr); |
| default: |
| goto drop; |
| } |
| switch (fc_hdr->fh_type) { |
| case FC_TYPE_BLS: |
| case FC_TYPE_ELS: |
| case FC_TYPE_FCP: |
| case FC_TYPE_CT: |
| break; |
| case FC_TYPE_IP: |
| case FC_TYPE_ILS: |
| default: |
| goto drop; |
| } |
| lpfc_printf_log(phba, KERN_INFO, LOG_ELS, |
| "2538 Received frame rctl:%s type:%s\n", |
| rctl_names[fc_hdr->fh_r_ctl], |
| type_names[fc_hdr->fh_type]); |
| return 0; |
| drop: |
| lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, |
| "2539 Dropped frame rctl:%s type:%s\n", |
| rctl_names[fc_hdr->fh_r_ctl], |
| type_names[fc_hdr->fh_type]); |
| return 1; |
| } |
| |
| /** |
| * lpfc_fc_hdr_get_vfi - Get the VFI from an FC frame |
| * @fc_hdr: A pointer to the FC Header data (In Big Endian Format) |
| * |
| * This function processes the FC header to retrieve the VFI from the VF |
| * header, if one exists. This function will return the VFI if one exists |
| * or 0 if no VSAN Header exists. |
| **/ |
| static uint32_t |
| lpfc_fc_hdr_get_vfi(struct fc_frame_header *fc_hdr) |
| { |
| struct fc_vft_header *fc_vft_hdr = (struct fc_vft_header *)fc_hdr; |
| |
| if (fc_hdr->fh_r_ctl != FC_RCTL_VFTH) |
| return 0; |
| return bf_get(fc_vft_hdr_vf_id, fc_vft_hdr); |
| } |
| |
| /** |
| * lpfc_fc_frame_to_vport - Finds the vport that a frame is destined to |
| * @phba: Pointer to the HBA structure to search for the vport on |
| * @fc_hdr: A pointer to the FC Header data (In Big Endian Format) |
| * @fcfi: The FC Fabric ID that the frame came from |
| * |
| * This function searches the @phba for a vport that matches the content of the |
| * @fc_hdr passed in and the @fcfi. This function uses the @fc_hdr to fetch the |
| * VFI, if the Virtual Fabric Tagging Header exists, and the DID. This function |
| * returns the matching vport pointer or NULL if unable to match frame to a |
| * vport. |
| **/ |
| static struct lpfc_vport * |
| lpfc_fc_frame_to_vport(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr, |
| uint16_t fcfi) |
| { |
| struct lpfc_vport **vports; |
| struct lpfc_vport *vport = NULL; |
| int i; |
| uint32_t did = (fc_hdr->fh_d_id[0] << 16 | |
| fc_hdr->fh_d_id[1] << 8 | |
| fc_hdr->fh_d_id[2]); |
| |
| vports = lpfc_create_vport_work_array(phba); |
| if (vports != NULL) |
| for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
| if (phba->fcf.fcfi == fcfi && |
| vports[i]->vfi == lpfc_fc_hdr_get_vfi(fc_hdr) && |
| vports[i]->fc_myDID == did) { |
| vport = vports[i]; |
| break; |
| } |
| } |
| lpfc_destroy_vport_work_array(phba, vports); |
| return vport; |
| } |
| |
| /** |
| * lpfc_update_rcv_time_stamp - Update vport's rcv seq time stamp |
| * @vport: The vport to work on. |
| * |
| * This function updates the receive sequence time stamp for this vport. The |
| * receive sequence time stamp indicates the time that the last frame of the |
| * the sequence that has been idle for the longest amount of time was received. |
| * the driver uses this time stamp to indicate if any received sequences have |
| * timed out. |
| **/ |
| void |
| lpfc_update_rcv_time_stamp(struct lpfc_vport *vport) |
| { |
| struct lpfc_dmabuf *h_buf; |
| struct hbq_dmabuf *dmabuf = NULL; |
| |
| /* get the oldest sequence on the rcv list */ |
| h_buf = list_get_first(&vport->rcv_buffer_list, |
| struct lpfc_dmabuf, list); |
| if (!h_buf) |
| return; |
| dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); |
| vport->rcv_buffer_time_stamp = dmabuf->time_stamp; |
| } |
| |
| /** |
| * lpfc_cleanup_rcv_buffers - Cleans up all outstanding receive sequences. |
| * @vport: The vport that the received sequences were sent to. |
| * |
| * This function cleans up all outstanding received sequences. This is called |
| * by the driver when a link event or user action invalidates all the received |
| * sequences. |
| **/ |
| void |
| lpfc_cleanup_rcv_buffers(struct lpfc_vport *vport) |
| { |
| struct lpfc_dmabuf *h_buf, *hnext; |
| struct lpfc_dmabuf *d_buf, *dnext; |
| struct hbq_dmabuf *dmabuf = NULL; |
| |
| /* start with the oldest sequence on the rcv list */ |
| list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) { |
| dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); |
| list_del_init(&dmabuf->hbuf.list); |
| list_for_each_entry_safe(d_buf, dnext, |
| &dmabuf->dbuf.list, list) { |
| list_del_init(&d_buf->list); |
| lpfc_in_buf_free(vport->phba, d_buf); |
| } |
| lpfc_in_buf_free(vport->phba, &dmabuf->dbuf); |
| } |
| } |
| |
| /** |
| * lpfc_rcv_seq_check_edtov - Cleans up timed out receive sequences. |
| * @vport: The vport that the received sequences were sent to. |
| * |
| * This function determines whether any received sequences have timed out by |
| * first checking the vport's rcv_buffer_time_stamp. If this time_stamp |
| * indicates that there is at least one timed out sequence this routine will |
| * go through the received sequences one at a time from most inactive to most |
| * active to determine which ones need to be cleaned up. Once it has determined |
| * that a sequence needs to be cleaned up it will simply free up the resources |
| * without sending an abort. |
| **/ |
| void |
| lpfc_rcv_seq_check_edtov(struct lpfc_vport *vport) |
| { |
| struct lpfc_dmabuf *h_buf, *hnext; |
| struct lpfc_dmabuf *d_buf, *dnext; |
| struct hbq_dmabuf *dmabuf = NULL; |
| unsigned long timeout; |
| int abort_count = 0; |
| |
| timeout = (msecs_to_jiffies(vport->phba->fc_edtov) + |
| vport->rcv_buffer_time_stamp); |
| if (list_empty(&vport->rcv_buffer_list) || |
| time_before(jiffies, timeout)) |
| return; |
| /* start with the oldest sequence on the rcv list */ |
| list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) { |
| dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); |
| timeout = (msecs_to_jiffies(vport->phba->fc_edtov) + |
| dmabuf->time_stamp); |
| if (time_before(jiffies, timeout)) |
| break; |
| abort_count++; |
| list_del_init(&dmabuf->hbuf.list); |
| list_for_each_entry_safe(d_buf, dnext, |
| &dmabuf->dbuf.list, list) { |
| list_del_init(&d_buf->list); |
| lpfc_in_buf_free(vport->phba, d_buf); |
| } |
| lpfc_in_buf_free(vport->phba, &dmabuf->dbuf); |
| } |
| if (abort_count) |
| lpfc_update_rcv_time_stamp(vport); |
| } |
| |
| /** |
| * lpfc_fc_frame_add - Adds a frame to the vport's list of received sequences |
| * @dmabuf: pointer to a dmabuf that describes the hdr and data of the FC frame |
| * |
| * This function searches through the existing incomplete sequences that have |
| * been sent to this @vport. If the frame matches one of the incomplete |
| * sequences then the dbuf in the @dmabuf is added to the list of frames that |
| * make up that sequence. If no sequence is found that matches this frame then |
| * the function will add the hbuf in the @dmabuf to the @vport's rcv_buffer_list |
| * This function returns a pointer to the first dmabuf in the sequence list that |
| * the frame was linked to. |
| **/ |
| static struct hbq_dmabuf * |
| lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf) |
| { |
| struct fc_frame_header *new_hdr; |
| struct fc_frame_header *temp_hdr; |
| struct lpfc_dmabuf *d_buf; |
| struct lpfc_dmabuf *h_buf; |
| struct hbq_dmabuf *seq_dmabuf = NULL; |
| struct hbq_dmabuf *temp_dmabuf = NULL; |
| |
| INIT_LIST_HEAD(&dmabuf->dbuf.list); |
| dmabuf->time_stamp = jiffies; |
| new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; |
| /* Use the hdr_buf to find the sequence that this frame belongs to */ |
| list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) { |
| temp_hdr = (struct fc_frame_header *)h_buf->virt; |
| if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) || |
| (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) || |
| (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3))) |
| continue; |
| /* found a pending sequence that matches this frame */ |
| seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); |
| break; |
| } |
| if (!seq_dmabuf) { |
| /* |
| * This indicates first frame received for this sequence. |
| * Queue the buffer on the vport's rcv_buffer_list. |
| */ |
| list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list); |
| lpfc_update_rcv_time_stamp(vport); |
| return dmabuf; |
| } |
| temp_hdr = seq_dmabuf->hbuf.virt; |
| if (be16_to_cpu(new_hdr->fh_seq_cnt) < |
| be16_to_cpu(temp_hdr->fh_seq_cnt)) { |
| list_del_init(&seq_dmabuf->hbuf.list); |
| list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list); |
| list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list); |
| lpfc_update_rcv_time_stamp(vport); |
| return dmabuf; |
| } |
| /* move this sequence to the tail to indicate a young sequence */ |
| list_move_tail(&seq_dmabuf->hbuf.list, &vport->rcv_buffer_list); |
| seq_dmabuf->time_stamp = jiffies; |
| lpfc_update_rcv_time_stamp(vport); |
| if (list_empty(&seq_dmabuf->dbuf.list)) { |
| temp_hdr = dmabuf->hbuf.virt; |
| list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list); |
| return seq_dmabuf; |
| } |
| /* find the correct place in the sequence to insert this frame */ |
| list_for_each_entry_reverse(d_buf, &seq_dmabuf->dbuf.list, list) { |
| temp_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf); |
| temp_hdr = (struct fc_frame_header *)temp_dmabuf->hbuf.virt; |
| /* |
| * If the frame's sequence count is greater than the frame on |
| * the list then insert the frame right after this frame |
| */ |
| if (be16_to_cpu(new_hdr->fh_seq_cnt) > |
| be16_to_cpu(temp_hdr->fh_seq_cnt)) { |
| list_add(&dmabuf->dbuf.list, &temp_dmabuf->dbuf.list); |
| return seq_dmabuf; |
| } |
| } |
| return NULL; |
| } |
| |
| /** |
| * lpfc_sli4_abort_partial_seq - Abort partially assembled unsol sequence |
| * @vport: pointer to a vitural port |
| * @dmabuf: pointer to a dmabuf that describes the FC sequence |
| * |
| * This function tries to abort from the partially assembed sequence, described |
| * by the information from basic abbort @dmabuf. It checks to see whether such |
| * partially assembled sequence held by the driver. If so, it shall free up all |
| * the frames from the partially assembled sequence. |
| * |
| * Return |
| * true -- if there is matching partially assembled sequence present and all |
| * the frames freed with the sequence; |
| * false -- if there is no matching partially assembled sequence present so |
| * nothing got aborted in the lower layer driver |
| **/ |
| static bool |
| lpfc_sli4_abort_partial_seq(struct lpfc_vport *vport, |
| struct hbq_dmabuf *dmabuf) |
| { |
| struct fc_frame_header *new_hdr; |
| struct fc_frame_header *temp_hdr; |
| struct lpfc_dmabuf *d_buf, *n_buf, *h_buf; |
| struct hbq_dmabuf *seq_dmabuf = NULL; |
| |
| /* Use the hdr_buf to find the sequence that matches this frame */ |
| INIT_LIST_HEAD(&dmabuf->dbuf.list); |
| INIT_LIST_HEAD(&dmabuf->hbuf.list); |
| new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; |
| list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) { |
| temp_hdr = (struct fc_frame_header *)h_buf->virt; |
| if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) || |
| (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) || |
| (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3))) |
| continue; |
| /* found a pending sequence that matches this frame */ |
| seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); |
| break; |
| } |
| |
| /* Free up all the frames from the partially assembled sequence */ |
| if (seq_dmabuf) { |
| list_for_each_entry_safe(d_buf, n_buf, |
| &seq_dmabuf->dbuf.list, list) { |
| list_del_init(&d_buf->list); |
| lpfc_in_buf_free(vport->phba, d_buf); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * lpfc_sli4_seq_abort_acc_cmpl - Accept seq abort iocb complete handler |
| * @phba: Pointer to HBA context object. |
| * @cmd_iocbq: pointer to the command iocbq structure. |
| * @rsp_iocbq: pointer to the response iocbq structure. |
| * |
| * This function handles the sequence abort accept iocb command complete |
| * event. It properly releases the memory allocated to the sequence abort |
| * accept iocb. |
| **/ |
| static void |
| lpfc_sli4_seq_abort_acc_cmpl(struct lpfc_hba *phba, |
| struct lpfc_iocbq *cmd_iocbq, |
| struct lpfc_iocbq *rsp_iocbq) |
| { |
| if (cmd_iocbq) |
| lpfc_sli_release_iocbq(phba, cmd_iocbq); |
| } |
| |
| /** |
| * lpfc_sli4_seq_abort_acc - Accept sequence abort |
| * @phba: Pointer to HBA context object. |
| * @fc_hdr: pointer to a FC frame header. |
| * |
| * This function sends a basic accept to a previous unsol sequence abort |
| * event after aborting the sequence handling. |
| **/ |
| static void |
| lpfc_sli4_seq_abort_acc(struct lpfc_hba *phba, |
| struct fc_frame_header *fc_hdr) |
| { |
| struct lpfc_iocbq *ctiocb = NULL; |
| struct lpfc_nodelist *ndlp; |
| uint16_t oxid, rxid; |
| uint32_t sid, fctl; |
| IOCB_t *icmd; |
| |
| if (!lpfc_is_link_up(phba)) |
| return; |
| |
| sid = sli4_sid_from_fc_hdr(fc_hdr); |
| oxid = be16_to_cpu(fc_hdr->fh_ox_id); |
| rxid = be16_to_cpu(fc_hdr->fh_rx_id); |
| |
| ndlp = lpfc_findnode_did(phba->pport, sid); |
| if (!ndlp) { |
| lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, |
| "1268 Find ndlp returned NULL for oxid:x%x " |
| "SID:x%x\n", oxid, sid); |
| return; |
| } |
| |
| /* Allocate buffer for acc iocb */ |
| ctiocb = lpfc_sli_get_iocbq(phba); |
| if (!ctiocb) |
| return; |
| |
| /* Extract the F_CTL field from FC_HDR */ |
| fctl = sli4_fctl_from_fc_hdr(fc_hdr); |
| |
| icmd = &ctiocb->iocb; |
| icmd->un.xseq64.bdl.bdeSize = 0; |
| icmd->un.xseq64.bdl.ulpIoTag32 = 0; |
| icmd->un.xseq64.w5.hcsw.Dfctl = 0; |
| icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_BA_ACC; |
| icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_BLS; |
| |
| /* Fill in the rest of iocb fields */ |
| icmd->ulpCommand = CMD_XMIT_BLS_RSP64_CX; |
| icmd->ulpBdeCount = 0; |
| icmd->ulpLe = 1; |
| icmd->ulpClass = CLASS3; |
| icmd->ulpContext = ndlp->nlp_rpi; |
| |
| ctiocb->iocb_cmpl = NULL; |
| ctiocb->vport = phba->pport; |
| ctiocb->iocb_cmpl = lpfc_sli4_seq_abort_acc_cmpl; |
| |
| if (fctl & FC_FC_EX_CTX) { |
| /* ABTS sent by responder to CT exchange, construction |
| * of BA_ACC will use OX_ID from ABTS for the XRI_TAG |
| * field and RX_ID from ABTS for RX_ID field. |
| */ |
| bf_set(lpfc_abts_orig, &icmd->un.bls_acc, LPFC_ABTS_UNSOL_RSP); |
| bf_set(lpfc_abts_rxid, &icmd->un.bls_acc, rxid); |
| ctiocb->sli4_xritag = oxid; |
| } else { |
| /* ABTS sent by initiator to CT exchange, construction |
| * of BA_ACC will need to allocate a new XRI as for the |
| * XRI_TAG and RX_ID fields. |
| */ |
| bf_set(lpfc_abts_orig, &icmd->un.bls_acc, LPFC_ABTS_UNSOL_INT); |
| bf_set(lpfc_abts_rxid, &icmd->un.bls_acc, NO_XRI); |
| ctiocb->sli4_xritag = NO_XRI; |
| } |
| bf_set(lpfc_abts_oxid, &icmd->un.bls_acc, oxid); |
| |
| /* Xmit CT abts accept on exchange <xid> */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_ELS, |
| "1200 Xmit CT ABTS ACC on exchange x%x Data: x%x\n", |
| CMD_XMIT_BLS_RSP64_CX, phba->link_state); |
| lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0); |
| } |
| |
| /** |
| * lpfc_sli4_handle_unsol_abort - Handle sli-4 unsolicited abort event |
| * @vport: Pointer to the vport on which this sequence was received |
| * @dmabuf: pointer to a dmabuf that describes the FC sequence |
| * |
| * This function handles an SLI-4 unsolicited abort event. If the unsolicited |
| * receive sequence is only partially assembed by the driver, it shall abort |
| * the partially assembled frames for the sequence. Otherwise, if the |
| * unsolicited receive sequence has been completely assembled and passed to |
| * the Upper Layer Protocol (UPL), it then mark the per oxid status for the |
| * unsolicited sequence has been aborted. After that, it will issue a basic |
| * accept to accept the abort. |
| **/ |
| void |
| lpfc_sli4_handle_unsol_abort(struct lpfc_vport *vport, |
| struct hbq_dmabuf *dmabuf) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| struct fc_frame_header fc_hdr; |
| uint32_t fctl; |
| bool abts_par; |
| |
| /* Make a copy of fc_hdr before the dmabuf being released */ |
| memcpy(&fc_hdr, dmabuf->hbuf.virt, sizeof(struct fc_frame_header)); |
| fctl = sli4_fctl_from_fc_hdr(&fc_hdr); |
| |
| if (fctl & FC_FC_EX_CTX) { |
| /* |
| * ABTS sent by responder to exchange, just free the buffer |
| */ |
| lpfc_in_buf_free(phba, &dmabuf->dbuf); |
| } else { |
| /* |
| * ABTS sent by initiator to exchange, need to do cleanup |
| */ |
| /* Try to abort partially assembled seq */ |
| abts_par = lpfc_sli4_abort_partial_seq(vport, dmabuf); |
| |
| /* Send abort to ULP if partially seq abort failed */ |
| if (abts_par == false) |
| lpfc_sli4_send_seq_to_ulp(vport, dmabuf); |
| else |
| lpfc_in_buf_free(phba, &dmabuf->dbuf); |
| } |
| /* Send basic accept (BA_ACC) to the abort requester */ |
| lpfc_sli4_seq_abort_acc(phba, &fc_hdr); |
| } |
| |
| /** |
| * lpfc_seq_complete - Indicates if a sequence is complete |
| * @dmabuf: pointer to a dmabuf that describes the FC sequence |
| * |
| * This function checks the sequence, starting with the frame described by |
| * @dmabuf, to see if all the frames associated with this sequence are present. |
| * the frames associated with this sequence are linked to the @dmabuf using the |
| * dbuf list. This function looks for two major things. 1) That the first frame |
| * has a sequence count of zero. 2) There is a frame with last frame of sequence |
| * set. 3) That there are no holes in the sequence count. The function will |
| * return 1 when the sequence is complete, otherwise it will return 0. |
| **/ |
| static int |
| lpfc_seq_complete(struct hbq_dmabuf *dmabuf) |
| { |
| struct fc_frame_header *hdr; |
| struct lpfc_dmabuf *d_buf; |
| struct hbq_dmabuf *seq_dmabuf; |
| uint32_t fctl; |
| int seq_count = 0; |
| |
| hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; |
| /* make sure first fame of sequence has a sequence count of zero */ |
| if (hdr->fh_seq_cnt != seq_count) |
| return 0; |
| fctl = (hdr->fh_f_ctl[0] << 16 | |
| hdr->fh_f_ctl[1] << 8 | |
| hdr->fh_f_ctl[2]); |
| /* If last frame of sequence we can return success. */ |
| if (fctl & FC_FC_END_SEQ) |
| return 1; |
| list_for_each_entry(d_buf, &dmabuf->dbuf.list, list) { |
| seq_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf); |
| hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt; |
| /* If there is a hole in the sequence count then fail. */ |
| if (++seq_count != be16_to_cpu(hdr->fh_seq_cnt)) |
| return 0; |
| fctl = (hdr->fh_f_ctl[0] << 16 | |
| hdr->fh_f_ctl[1] << 8 | |
| hdr->fh_f_ctl[2]); |
| /* If last frame of sequence we can return success. */ |
| if (fctl & FC_FC_END_SEQ) |
| return 1; |
| } |
| return 0; |
| } |
| |
| /** |
| * lpfc_prep_seq - Prep sequence for ULP processing |
| * @vport: Pointer to the vport on which this sequence was received |
| * @dmabuf: pointer to a dmabuf that describes the FC sequence |
| * |
| * This function takes a sequence, described by a list of frames, and creates |
| * a list of iocbq structures to describe the sequence. This iocbq list will be |
| * used to issue to the generic unsolicited sequence handler. This routine |
| * returns a pointer to the first iocbq in the list. If the function is unable |
| * to allocate an iocbq then it throw out the received frames that were not |
| * able to be described and return a pointer to the first iocbq. If unable to |
| * allocate any iocbqs (including the first) this function will return NULL. |
| **/ |
| static struct lpfc_iocbq * |
| lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf) |
| { |
| struct lpfc_dmabuf *d_buf, *n_buf; |
| struct lpfc_iocbq *first_iocbq, *iocbq; |
| struct fc_frame_header *fc_hdr; |
| uint32_t sid; |
| struct ulp_bde64 *pbde; |
| |
| fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt; |
| /* remove from receive buffer list */ |
| list_del_init(&seq_dmabuf->hbuf.list); |
| lpfc_update_rcv_time_stamp(vport); |
| /* get the Remote Port's SID */ |
| sid = sli4_sid_from_fc_hdr(fc_hdr); |
| /* Get an iocbq struct to fill in. */ |
| first_iocbq = lpfc_sli_get_iocbq(vport->phba); |
| if (first_iocbq) { |
| /* Initialize the first IOCB. */ |
| first_iocbq->iocb.unsli3.rcvsli3.acc_len = 0; |
| first_iocbq->iocb.ulpStatus = IOSTAT_SUCCESS; |
| first_iocbq->iocb.ulpCommand = CMD_IOCB_RCV_SEQ64_CX; |
| first_iocbq->iocb.ulpContext = be16_to_cpu(fc_hdr->fh_ox_id); |
| first_iocbq->iocb.unsli3.rcvsli3.vpi = |
| vport->vpi + vport->phba->vpi_base; |
| /* put the first buffer into the first IOCBq */ |
| first_iocbq->context2 = &seq_dmabuf->dbuf; |
| first_iocbq->context3 = NULL; |
| first_iocbq->iocb.ulpBdeCount = 1; |
| first_iocbq->iocb.un.cont64[0].tus.f.bdeSize = |
| LPFC_DATA_BUF_SIZE; |
| first_iocbq->iocb.un.rcvels.remoteID = sid; |
| first_iocbq->iocb.unsli3.rcvsli3.acc_len += |
| bf_get(lpfc_rcqe_length, |
| &seq_dmabuf->cq_event.cqe.rcqe_cmpl); |
| } |
| iocbq = first_iocbq; |
| /* |
| * Each IOCBq can have two Buffers assigned, so go through the list |
| * of buffers for this sequence and save two buffers in each IOCBq |
| */ |
| list_for_each_entry_safe(d_buf, n_buf, &seq_dmabuf->dbuf.list, list) { |
| if (!iocbq) { |
| lpfc_in_buf_free(vport->phba, d_buf); |
| continue; |
| } |
| if (!iocbq->context3) { |
| iocbq->context3 = d_buf; |
| iocbq->iocb.ulpBdeCount++; |
| pbde = (struct ulp_bde64 *) |
| &iocbq->iocb.unsli3.sli3Words[4]; |
| pbde->tus.f.bdeSize = LPFC_DATA_BUF_SIZE; |
| first_iocbq->iocb.unsli3.rcvsli3.acc_len += |
| bf_get(lpfc_rcqe_length, |
| &seq_dmabuf->cq_event.cqe.rcqe_cmpl); |
| } else { |
| iocbq = lpfc_sli_get_iocbq(vport->phba); |
| if (!iocbq) { |
| if (first_iocbq) { |
| first_iocbq->iocb.ulpStatus = |
| IOSTAT_FCP_RSP_ERROR; |
| first_iocbq->iocb.un.ulpWord[4] = |
| IOERR_NO_RESOURCES; |
| } |
| lpfc_in_buf_free(vport->phba, d_buf); |
| continue; |
| } |
| iocbq->context2 = d_buf; |
| iocbq->context3 = NULL; |
| iocbq->iocb.ulpBdeCount = 1; |
| iocbq->iocb.un.cont64[0].tus.f.bdeSize = |
| LPFC_DATA_BUF_SIZE; |
| first_iocbq->iocb.unsli3.rcvsli3.acc_len += |
| bf_get(lpfc_rcqe_length, |
| &seq_dmabuf->cq_event.cqe.rcqe_cmpl); |
| iocbq->iocb.un.rcvels.remoteID = sid; |
| list_add_tail(&iocbq->list, &first_iocbq->list); |
| } |
| } |
| return first_iocbq; |
| } |
| |
| static void |
| lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *vport, |
| struct hbq_dmabuf *seq_dmabuf) |
| { |
| struct fc_frame_header *fc_hdr; |
| struct lpfc_iocbq *iocbq, *curr_iocb, *next_iocb; |
| struct lpfc_hba *phba = vport->phba; |
| |
| fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt; |
| iocbq = lpfc_prep_seq(vport, seq_dmabuf); |
| if (!iocbq) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2707 Ring %d handler: Failed to allocate " |
| "iocb Rctl x%x Type x%x received\n", |
| LPFC_ELS_RING, |
| fc_hdr->fh_r_ctl, fc_hdr->fh_type); |
| return; |
| } |
| if (!lpfc_complete_unsol_iocb(phba, |
| &phba->sli.ring[LPFC_ELS_RING], |
| iocbq, fc_hdr->fh_r_ctl, |
| fc_hdr->fh_type)) |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "2540 Ring %d handler: unexpected Rctl " |
| "x%x Type x%x received\n", |
| LPFC_ELS_RING, |
| fc_hdr->fh_r_ctl, fc_hdr->fh_type); |
| |
| /* Free iocb created in lpfc_prep_seq */ |
| list_for_each_entry_safe(curr_iocb, next_iocb, |
| &iocbq->list, list) { |
| list_del_init(&curr_iocb->list); |
| lpfc_sli_release_iocbq(phba, curr_iocb); |
| } |
| lpfc_sli_release_iocbq(phba, iocbq); |
| } |
| |
| /** |
| * lpfc_sli4_handle_received_buffer - Handle received buffers from firmware |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called with no lock held. This function processes all |
| * the received buffers and gives it to upper layers when a received buffer |
| * indicates that it is the final frame in the sequence. The interrupt |
| * service routine processes received buffers at interrupt contexts and adds |
| * received dma buffers to the rb_pend_list queue and signals the worker thread. |
| * Worker thread calls lpfc_sli4_handle_received_buffer, which will call the |
| * appropriate receive function when the final frame in a sequence is received. |
| **/ |
| void |
| lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba, |
| struct hbq_dmabuf *dmabuf) |
| { |
| struct hbq_dmabuf *seq_dmabuf; |
| struct fc_frame_header *fc_hdr; |
| struct lpfc_vport *vport; |
| uint32_t fcfi; |
| |
| /* Process each received buffer */ |
| fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; |
| /* check to see if this a valid type of frame */ |
| if (lpfc_fc_frame_check(phba, fc_hdr)) { |
| lpfc_in_buf_free(phba, &dmabuf->dbuf); |
| return; |
| } |
| fcfi = bf_get(lpfc_rcqe_fcf_id, &dmabuf->cq_event.cqe.rcqe_cmpl); |
| vport = lpfc_fc_frame_to_vport(phba, fc_hdr, fcfi); |
| if (!vport || !(vport->vpi_state & LPFC_VPI_REGISTERED)) { |
| /* throw out the frame */ |
| lpfc_in_buf_free(phba, &dmabuf->dbuf); |
| return; |
| } |
| /* Handle the basic abort sequence (BA_ABTS) event */ |
| if (fc_hdr->fh_r_ctl == FC_RCTL_BA_ABTS) { |
| lpfc_sli4_handle_unsol_abort(vport, dmabuf); |
| return; |
| } |
| |
| /* Link this frame */ |
| seq_dmabuf = lpfc_fc_frame_add(vport, dmabuf); |
| if (!seq_dmabuf) { |
| /* unable to add frame to vport - throw it out */ |
| lpfc_in_buf_free(phba, &dmabuf->dbuf); |
| return; |
| } |
| /* If not last frame in sequence continue processing frames. */ |
| if (!lpfc_seq_complete(seq_dmabuf)) |
| return; |
| |
| /* Send the complete sequence to the upper layer protocol */ |
| lpfc_sli4_send_seq_to_ulp(vport, seq_dmabuf); |
| } |
| |
| /** |
| * lpfc_sli4_post_all_rpi_hdrs - Post the rpi header memory region to the port |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This routine is invoked to post rpi header templates to the |
| * HBA consistent with the SLI-4 interface spec. This routine |
| * posts a PAGE_SIZE memory region to the port to hold up to |
| * PAGE_SIZE modulo 64 rpi context headers. |
| * |
| * This routine does not require any locks. It's usage is expected |
| * to be driver load or reset recovery when the driver is |
| * sequential. |
| * |
| * Return codes |
| * 0 - successful |
| * EIO - The mailbox failed to complete successfully. |
| * When this error occurs, the driver is not guaranteed |
| * to have any rpi regions posted to the device and |
| * must either attempt to repost the regions or take a |
| * fatal error. |
| **/ |
| int |
| lpfc_sli4_post_all_rpi_hdrs(struct lpfc_hba *phba) |
| { |
| struct lpfc_rpi_hdr *rpi_page; |
| uint32_t rc = 0; |
| |
| /* Post all rpi memory regions to the port. */ |
| list_for_each_entry(rpi_page, &phba->sli4_hba.lpfc_rpi_hdr_list, list) { |
| rc = lpfc_sli4_post_rpi_hdr(phba, rpi_page); |
| if (rc != MBX_SUCCESS) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2008 Error %d posting all rpi " |
| "headers\n", rc); |
| rc = -EIO; |
| break; |
| } |
| } |
| |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli4_post_rpi_hdr - Post an rpi header memory region to the port |
| * @phba: pointer to lpfc hba data structure. |
| * @rpi_page: pointer to the rpi memory region. |
| * |
| * This routine is invoked to post a single rpi header to the |
| * HBA consistent with the SLI-4 interface spec. This memory region |
| * maps up to 64 rpi context regions. |
| * |
| * Return codes |
| * 0 - successful |
| * ENOMEM - No available memory |
| * EIO - The mailbox failed to complete successfully. |
| **/ |
| int |
| lpfc_sli4_post_rpi_hdr(struct lpfc_hba *phba, struct lpfc_rpi_hdr *rpi_page) |
| { |
| LPFC_MBOXQ_t *mboxq; |
| struct lpfc_mbx_post_hdr_tmpl *hdr_tmpl; |
| uint32_t rc = 0; |
| uint32_t mbox_tmo; |
| uint32_t shdr_status, shdr_add_status; |
| union lpfc_sli4_cfg_shdr *shdr; |
| |
| /* The port is notified of the header region via a mailbox command. */ |
| mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mboxq) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2001 Unable to allocate memory for issuing " |
| "SLI_CONFIG_SPECIAL mailbox command\n"); |
| return -ENOMEM; |
| } |
| |
| /* Post all rpi memory regions to the port. */ |
| hdr_tmpl = &mboxq->u.mqe.un.hdr_tmpl; |
| mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG); |
| lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_POST_HDR_TEMPLATE, |
| sizeof(struct lpfc_mbx_post_hdr_tmpl) - |
| sizeof(struct mbox_header), LPFC_SLI4_MBX_EMBED); |
| bf_set(lpfc_mbx_post_hdr_tmpl_page_cnt, |
| hdr_tmpl, rpi_page->page_count); |
| bf_set(lpfc_mbx_post_hdr_tmpl_rpi_offset, hdr_tmpl, |
| rpi_page->start_rpi); |
| hdr_tmpl->rpi_paddr_lo = putPaddrLow(rpi_page->dmabuf->phys); |
| hdr_tmpl->rpi_paddr_hi = putPaddrHigh(rpi_page->dmabuf->phys); |
| rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); |
| shdr = (union lpfc_sli4_cfg_shdr *) &hdr_tmpl->header.cfg_shdr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| if (rc != MBX_TIMEOUT) |
| mempool_free(mboxq, phba->mbox_mem_pool); |
| if (shdr_status || shdr_add_status || rc) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2514 POST_RPI_HDR mailbox failed with " |
| "status x%x add_status x%x, mbx status x%x\n", |
| shdr_status, shdr_add_status, rc); |
| rc = -ENXIO; |
| } |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli4_alloc_rpi - Get an available rpi in the device's range |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This routine is invoked to post rpi header templates to the |
| * HBA consistent with the SLI-4 interface spec. This routine |
| * posts a PAGE_SIZE memory region to the port to hold up to |
| * PAGE_SIZE modulo 64 rpi context headers. |
| * |
| * Returns |
| * A nonzero rpi defined as rpi_base <= rpi < max_rpi if successful |
| * LPFC_RPI_ALLOC_ERROR if no rpis are available. |
| **/ |
| int |
| lpfc_sli4_alloc_rpi(struct lpfc_hba *phba) |
| { |
| int rpi; |
| uint16_t max_rpi, rpi_base, rpi_limit; |
| uint16_t rpi_remaining; |
| struct lpfc_rpi_hdr *rpi_hdr; |
| |
| max_rpi = phba->sli4_hba.max_cfg_param.max_rpi; |
| rpi_base = phba->sli4_hba.max_cfg_param.rpi_base; |
| rpi_limit = phba->sli4_hba.next_rpi; |
| |
| /* |
| * The valid rpi range is not guaranteed to be zero-based. Start |
| * the search at the rpi_base as reported by the port. |
| */ |
| spin_lock_irq(&phba->hbalock); |
| rpi = find_next_zero_bit(phba->sli4_hba.rpi_bmask, rpi_limit, rpi_base); |
| if (rpi >= rpi_limit || rpi < rpi_base) |
| rpi = LPFC_RPI_ALLOC_ERROR; |
| else { |
| set_bit(rpi, phba->sli4_hba.rpi_bmask); |
| phba->sli4_hba.max_cfg_param.rpi_used++; |
| phba->sli4_hba.rpi_count++; |
| } |
| |
| /* |
| * Don't try to allocate more rpi header regions if the device limit |
| * on available rpis max has been exhausted. |
| */ |
| if ((rpi == LPFC_RPI_ALLOC_ERROR) && |
| (phba->sli4_hba.rpi_count >= max_rpi)) { |
| spin_unlock_irq(&phba->hbalock); |
| return rpi; |
| } |
| |
| /* |
| * If the driver is running low on rpi resources, allocate another |
| * page now. Note that the next_rpi value is used because |
| * it represents how many are actually in use whereas max_rpi notes |
| * how many are supported max by the device. |
| */ |
| rpi_remaining = phba->sli4_hba.next_rpi - rpi_base - |
| phba->sli4_hba.rpi_count; |
| spin_unlock_irq(&phba->hbalock); |
| if (rpi_remaining < LPFC_RPI_LOW_WATER_MARK) { |
| rpi_hdr = lpfc_sli4_create_rpi_hdr(phba); |
| if (!rpi_hdr) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2002 Error Could not grow rpi " |
| "count\n"); |
| } else { |
| lpfc_sli4_post_rpi_hdr(phba, rpi_hdr); |
| } |
| } |
| |
| return rpi; |
| } |
| |
| /** |
| * lpfc_sli4_free_rpi - Release an rpi for reuse. |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This routine is invoked to release an rpi to the pool of |
| * available rpis maintained by the driver. |
| **/ |
| void |
| lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi) |
| { |
| spin_lock_irq(&phba->hbalock); |
| clear_bit(rpi, phba->sli4_hba.rpi_bmask); |
| phba->sli4_hba.rpi_count--; |
| phba->sli4_hba.max_cfg_param.rpi_used--; |
| spin_unlock_irq(&phba->hbalock); |
| } |
| |
| /** |
| * lpfc_sli4_remove_rpis - Remove the rpi bitmask region |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This routine is invoked to remove the memory region that |
| * provided rpi via a bitmask. |
| **/ |
| void |
| lpfc_sli4_remove_rpis(struct lpfc_hba *phba) |
| { |
| kfree(phba->sli4_hba.rpi_bmask); |
| } |
| |
| /** |
| * lpfc_sli4_resume_rpi - Remove the rpi bitmask region |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This routine is invoked to remove the memory region that |
| * provided rpi via a bitmask. |
| **/ |
| int |
| lpfc_sli4_resume_rpi(struct lpfc_nodelist *ndlp) |
| { |
| LPFC_MBOXQ_t *mboxq; |
| struct lpfc_hba *phba = ndlp->phba; |
| int rc; |
| |
| /* The port is notified of the header region via a mailbox command. */ |
| mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mboxq) |
| return -ENOMEM; |
| |
| /* Post all rpi memory regions to the port. */ |
| lpfc_resume_rpi(mboxq, ndlp); |
| rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); |
| if (rc == MBX_NOT_FINISHED) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2010 Resume RPI Mailbox failed " |
| "status %d, mbxStatus x%x\n", rc, |
| bf_get(lpfc_mqe_status, &mboxq->u.mqe)); |
| mempool_free(mboxq, phba->mbox_mem_pool); |
| return -EIO; |
| } |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli4_init_vpi - Initialize a vpi with the port |
| * @phba: pointer to lpfc hba data structure. |
| * @vpi: vpi value to activate with the port. |
| * |
| * This routine is invoked to activate a vpi with the |
| * port when the host intends to use vports with a |
| * nonzero vpi. |
| * |
| * Returns: |
| * 0 success |
| * -Evalue otherwise |
| **/ |
| int |
| lpfc_sli4_init_vpi(struct lpfc_hba *phba, uint16_t vpi) |
| { |
| LPFC_MBOXQ_t *mboxq; |
| int rc = 0; |
| int retval = MBX_SUCCESS; |
| uint32_t mbox_tmo; |
| |
| if (vpi == 0) |
| return -EINVAL; |
| mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mboxq) |
| return -ENOMEM; |
| lpfc_init_vpi(phba, mboxq, vpi); |
| mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_INIT_VPI); |
| rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo); |
| if (rc != MBX_SUCCESS) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "2022 INIT VPI Mailbox failed " |
| "status %d, mbxStatus x%x\n", rc, |
| bf_get(lpfc_mqe_status, &mboxq->u.mqe)); |
| retval = -EIO; |
| } |
| if (rc != MBX_TIMEOUT) |
| mempool_free(mboxq, phba->mbox_mem_pool); |
| |
| return retval; |
| } |
| |
| /** |
| * lpfc_mbx_cmpl_add_fcf_record - add fcf mbox completion handler. |
| * @phba: pointer to lpfc hba data structure. |
| * @mboxq: Pointer to mailbox object. |
| * |
| * This routine is invoked to manually add a single FCF record. The caller |
| * must pass a completely initialized FCF_Record. This routine takes |
| * care of the nonembedded mailbox operations. |
| **/ |
| static void |
| lpfc_mbx_cmpl_add_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) |
| { |
| void *virt_addr; |
| union lpfc_sli4_cfg_shdr *shdr; |
| uint32_t shdr_status, shdr_add_status; |
| |
| virt_addr = mboxq->sge_array->addr[0]; |
| /* The IOCTL status is embedded in the mailbox subheader. */ |
| shdr = (union lpfc_sli4_cfg_shdr *) virt_addr; |
| shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); |
| shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); |
| |
| if ((shdr_status || shdr_add_status) && |
| (shdr_status != STATUS_FCF_IN_USE)) |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2558 ADD_FCF_RECORD mailbox failed with " |
| "status x%x add_status x%x\n", |
| shdr_status, shdr_add_status); |
| |
| lpfc_sli4_mbox_cmd_free(phba, mboxq); |
| } |
| |
| /** |
| * lpfc_sli4_add_fcf_record - Manually add an FCF Record. |
| * @phba: pointer to lpfc hba data structure. |
| * @fcf_record: pointer to the initialized fcf record to add. |
| * |
| * This routine is invoked to manually add a single FCF record. The caller |
| * must pass a completely initialized FCF_Record. This routine takes |
| * care of the nonembedded mailbox operations. |
| **/ |
| int |
| lpfc_sli4_add_fcf_record(struct lpfc_hba *phba, struct fcf_record *fcf_record) |
| { |
| int rc = 0; |
| LPFC_MBOXQ_t *mboxq; |
| uint8_t *bytep; |
| void *virt_addr; |
| dma_addr_t phys_addr; |
| struct lpfc_mbx_sge sge; |
| uint32_t alloc_len, req_len; |
| uint32_t fcfindex; |
| |
| mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mboxq) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2009 Failed to allocate mbox for ADD_FCF cmd\n"); |
| return -ENOMEM; |
| } |
| |
| req_len = sizeof(struct fcf_record) + sizeof(union lpfc_sli4_cfg_shdr) + |
| sizeof(uint32_t); |
| |
| /* Allocate DMA memory and set up the non-embedded mailbox command */ |
| alloc_len = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_ADD_FCF, |
| req_len, LPFC_SLI4_MBX_NEMBED); |
| if (alloc_len < req_len) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2523 Allocated DMA memory size (x%x) is " |
| "less than the requested DMA memory " |
| "size (x%x)\n", alloc_len, req_len); |
| lpfc_sli4_mbox_cmd_free(phba, mboxq); |
| return -ENOMEM; |
| } |
| |
| /* |
| * Get the first SGE entry from the non-embedded DMA memory. This |
| * routine only uses a single SGE. |
| */ |
| lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); |
| phys_addr = getPaddr(sge.pa_hi, sge.pa_lo); |
| virt_addr = mboxq->sge_array->addr[0]; |
| /* |
| * Configure the FCF record for FCFI 0. This is the driver's |
| * hardcoded default and gets used in nonFIP mode. |
| */ |
| fcfindex = bf_get(lpfc_fcf_record_fcf_index, fcf_record); |
| bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr); |
| lpfc_sli_pcimem_bcopy(&fcfindex, bytep, sizeof(uint32_t)); |
| |
| /* |
| * Copy the fcf_index and the FCF Record Data. The data starts after |
| * the FCoE header plus word10. The data copy needs to be endian |
| * correct. |
| */ |
| bytep += sizeof(uint32_t); |
| lpfc_sli_pcimem_bcopy(fcf_record, bytep, sizeof(struct fcf_record)); |
| mboxq->vport = phba->pport; |
| mboxq->mbox_cmpl = lpfc_mbx_cmpl_add_fcf_record; |
| rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); |
| if (rc == MBX_NOT_FINISHED) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2515 ADD_FCF_RECORD mailbox failed with " |
| "status 0x%x\n", rc); |
| lpfc_sli4_mbox_cmd_free(phba, mboxq); |
| rc = -EIO; |
| } else |
| rc = 0; |
| |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli4_build_dflt_fcf_record - Build the driver's default FCF Record. |
| * @phba: pointer to lpfc hba data structure. |
| * @fcf_record: pointer to the fcf record to write the default data. |
| * @fcf_index: FCF table entry index. |
| * |
| * This routine is invoked to build the driver's default FCF record. The |
| * values used are hardcoded. This routine handles memory initialization. |
| * |
| **/ |
| void |
| lpfc_sli4_build_dflt_fcf_record(struct lpfc_hba *phba, |
| struct fcf_record *fcf_record, |
| uint16_t fcf_index) |
| { |
| memset(fcf_record, 0, sizeof(struct fcf_record)); |
| fcf_record->max_rcv_size = LPFC_FCOE_MAX_RCV_SIZE; |
| fcf_record->fka_adv_period = LPFC_FCOE_FKA_ADV_PER; |
| fcf_record->fip_priority = LPFC_FCOE_FIP_PRIORITY; |
| bf_set(lpfc_fcf_record_mac_0, fcf_record, phba->fc_map[0]); |
| bf_set(lpfc_fcf_record_mac_1, fcf_record, phba->fc_map[1]); |
| bf_set(lpfc_fcf_record_mac_2, fcf_record, phba->fc_map[2]); |
| bf_set(lpfc_fcf_record_mac_3, fcf_record, LPFC_FCOE_FCF_MAC3); |
| bf_set(lpfc_fcf_record_mac_4, fcf_record, LPFC_FCOE_FCF_MAC4); |
| bf_set(lpfc_fcf_record_mac_5, fcf_record, LPFC_FCOE_FCF_MAC5); |
| bf_set(lpfc_fcf_record_fc_map_0, fcf_record, phba->fc_map[0]); |
| bf_set(lpfc_fcf_record_fc_map_1, fcf_record, phba->fc_map[1]); |
| bf_set(lpfc_fcf_record_fc_map_2, fcf_record, phba->fc_map[2]); |
| bf_set(lpfc_fcf_record_fcf_valid, fcf_record, 1); |
| bf_set(lpfc_fcf_record_fcf_avail, fcf_record, 1); |
| bf_set(lpfc_fcf_record_fcf_index, fcf_record, fcf_index); |
| bf_set(lpfc_fcf_record_mac_addr_prov, fcf_record, |
| LPFC_FCF_FPMA | LPFC_FCF_SPMA); |
| /* Set the VLAN bit map */ |
| if (phba->valid_vlan) { |
| fcf_record->vlan_bitmap[phba->vlan_id / 8] |
| = 1 << (phba->vlan_id % 8); |
| } |
| } |
| |
| /** |
| * lpfc_sli4_read_fcf_record - Read the driver's default FCF Record. |
| * @phba: pointer to lpfc hba data structure. |
| * @fcf_index: FCF table entry offset. |
| * |
| * This routine is invoked to read up to @fcf_num of FCF record from the |
| * device starting with the given @fcf_index. |
| **/ |
| int |
| lpfc_sli4_read_fcf_record(struct lpfc_hba *phba, uint16_t fcf_index) |
| { |
| int rc = 0, error; |
| LPFC_MBOXQ_t *mboxq; |
| void *virt_addr; |
| dma_addr_t phys_addr; |
| uint8_t *bytep; |
| struct lpfc_mbx_sge sge; |
| uint32_t alloc_len, req_len; |
| struct lpfc_mbx_read_fcf_tbl *read_fcf; |
| |
| phba->fcoe_eventtag_at_fcf_scan = phba->fcoe_eventtag; |
| mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mboxq) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2000 Failed to allocate mbox for " |
| "READ_FCF cmd\n"); |
| error = -ENOMEM; |
| goto fail_fcfscan; |
| } |
| |
| req_len = sizeof(struct fcf_record) + |
| sizeof(union lpfc_sli4_cfg_shdr) + 2 * sizeof(uint32_t); |
| |
| /* Set up READ_FCF SLI4_CONFIG mailbox-ioctl command */ |
| alloc_len = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE, |
| LPFC_MBOX_OPCODE_FCOE_READ_FCF_TABLE, req_len, |
| LPFC_SLI4_MBX_NEMBED); |
| |
| if (alloc_len < req_len) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "0291 Allocated DMA memory size (x%x) is " |
| "less than the requested DMA memory " |
| "size (x%x)\n", alloc_len, req_len); |
| error = -ENOMEM; |
| goto fail_fcfscan; |
| } |
| |
| /* Get the first SGE entry from the non-embedded DMA memory. This |
| * routine only uses a single SGE. |
| */ |
| lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); |
| phys_addr = getPaddr(sge.pa_hi, sge.pa_lo); |
| virt_addr = mboxq->sge_array->addr[0]; |
| read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr; |
| |
| /* Set up command fields */ |
| bf_set(lpfc_mbx_read_fcf_tbl_indx, &read_fcf->u.request, fcf_index); |
| /* Perform necessary endian conversion */ |
| bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr); |
| lpfc_sli_pcimem_bcopy(bytep, bytep, sizeof(uint32_t)); |
| mboxq->vport = phba->pport; |
| mboxq->mbox_cmpl = lpfc_mbx_cmpl_read_fcf_record; |
| rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); |
| if (rc == MBX_NOT_FINISHED) { |
| error = -EIO; |
| } else { |
| spin_lock_irq(&phba->hbalock); |
| phba->hba_flag |= FCF_DISC_INPROGRESS; |
| spin_unlock_irq(&phba->hbalock); |
| error = 0; |
| } |
| fail_fcfscan: |
| if (error) { |
| if (mboxq) |
| lpfc_sli4_mbox_cmd_free(phba, mboxq); |
| /* FCF scan failed, clear FCF_DISC_INPROGRESS flag */ |
| spin_lock_irq(&phba->hbalock); |
| phba->hba_flag &= ~FCF_DISC_INPROGRESS; |
| spin_unlock_irq(&phba->hbalock); |
| } |
| return error; |
| } |
| |
| /** |
| * lpfc_sli_read_link_ste - Read region 23 to decide if link is disabled. |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This function read region 23 and parse TLV for port status to |
| * decide if the user disaled the port. If the TLV indicates the |
| * port is disabled, the hba_flag is set accordingly. |
| **/ |
| void |
| lpfc_sli_read_link_ste(struct lpfc_hba *phba) |
| { |
| LPFC_MBOXQ_t *pmb = NULL; |
| MAILBOX_t *mb; |
| uint8_t *rgn23_data = NULL; |
| uint32_t offset = 0, data_size, sub_tlv_len, tlv_offset; |
| int rc; |
| |
| pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!pmb) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2600 lpfc_sli_read_serdes_param failed to" |
| " allocate mailbox memory\n"); |
| goto out; |
| } |
| mb = &pmb->u.mb; |
| |
| /* Get adapter Region 23 data */ |
| rgn23_data = kzalloc(DMP_RGN23_SIZE, GFP_KERNEL); |
| if (!rgn23_data) |
| goto out; |
| |
| do { |
| lpfc_dump_mem(phba, pmb, offset, DMP_REGION_23); |
| rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); |
| |
| if (rc != MBX_SUCCESS) { |
| lpfc_printf_log(phba, KERN_INFO, LOG_INIT, |
| "2601 lpfc_sli_read_link_ste failed to" |
| " read config region 23 rc 0x%x Status 0x%x\n", |
| rc, mb->mbxStatus); |
| mb->un.varDmp.word_cnt = 0; |
| } |
| /* |
| * dump mem may return a zero when finished or we got a |
| * mailbox error, either way we are done. |
| */ |
| if (mb->un.varDmp.word_cnt == 0) |
| break; |
| if (mb->un.varDmp.word_cnt > DMP_RGN23_SIZE - offset) |
| mb->un.varDmp.word_cnt = DMP_RGN23_SIZE - offset; |
| |
| lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, |
| rgn23_data + offset, |
| mb->un.varDmp.word_cnt); |
| offset += mb->un.varDmp.word_cnt; |
| } while (mb->un.varDmp.word_cnt && offset < DMP_RGN23_SIZE); |
| |
| data_size = offset; |
| offset = 0; |
| |
| if (!data_size) |
| goto out; |
| |
| /* Check the region signature first */ |
| if (memcmp(&rgn23_data[offset], LPFC_REGION23_SIGNATURE, 4)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2619 Config region 23 has bad signature\n"); |
| goto out; |
| } |
| offset += 4; |
| |
| /* Check the data structure version */ |
| if (rgn23_data[offset] != LPFC_REGION23_VERSION) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_INIT, |
| "2620 Config region 23 has bad version\n"); |
| goto out; |
| } |
| offset += 4; |
| |
| /* Parse TLV entries in the region */ |
| while (offset < data_size) { |
| if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) |
| break; |
| /* |
| * If the TLV is not driver specific TLV or driver id is |
| * not linux driver id, skip the record. |
| */ |
| if ((rgn23_data[offset] != DRIVER_SPECIFIC_TYPE) || |
| (rgn23_data[offset + 2] != LINUX_DRIVER_ID) || |
| (rgn23_data[offset + 3] != 0)) { |
| offset += rgn23_data[offset + 1] * 4 + 4; |
| continue; |
| } |
| |
| /* Driver found a driver specific TLV in the config region */ |
| sub_tlv_len = rgn23_data[offset + 1] * 4; |
| offset += 4; |
| tlv_offset = 0; |
| |
| /* |
| * Search for configured port state sub-TLV. |
| */ |
| while ((offset < data_size) && |
| (tlv_offset < sub_tlv_len)) { |
| if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) { |
| offset += 4; |
| tlv_offset += 4; |
| break; |
| } |
| if (rgn23_data[offset] != PORT_STE_TYPE) { |
| offset += rgn23_data[offset + 1] * 4 + 4; |
| tlv_offset += rgn23_data[offset + 1] * 4 + 4; |
| continue; |
| } |
| |
| /* This HBA contains PORT_STE configured */ |
| if (!rgn23_data[offset + 2]) |
| phba->hba_flag |= LINK_DISABLED; |
| |
| goto out; |
| } |
| } |
| out: |
| if (pmb) |
| mempool_free(pmb, phba->mbox_mem_pool); |
| kfree(rgn23_data); |
| return; |
| } |
| |
| /** |
| * lpfc_cleanup_pending_mbox - Free up vport discovery mailbox commands. |
| * @vport: pointer to vport data structure. |
| * |
| * This function iterate through the mailboxq and clean up all REG_LOGIN |
| * and REG_VPI mailbox commands associated with the vport. This function |
| * is called when driver want to restart discovery of the vport due to |
| * a Clear Virtual Link event. |
| **/ |
| void |
| lpfc_cleanup_pending_mbox(struct lpfc_vport *vport) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| LPFC_MBOXQ_t *mb, *nextmb; |
| struct lpfc_dmabuf *mp; |
| |
| spin_lock_irq(&phba->hbalock); |
| list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { |
| if (mb->vport != vport) |
| continue; |
| |
| if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) && |
| (mb->u.mb.mbxCommand != MBX_REG_VPI)) |
| continue; |
| |
| if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) { |
| mp = (struct lpfc_dmabuf *) (mb->context1); |
| if (mp) { |
| __lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| } |
| } |
| list_del(&mb->list); |
| mempool_free(mb, phba->mbox_mem_pool); |
| } |
| mb = phba->sli.mbox_active; |
| if (mb && (mb->vport == vport)) { |
| if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) || |
| (mb->u.mb.mbxCommand == MBX_REG_VPI)) |
| mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| } |
| spin_unlock_irq(&phba->hbalock); |
| } |
| |