| /******************************************************************* |
| * This file is part of the Emulex Linux Device Driver for * |
| * Fibre Channel Host Bus Adapters. * |
| * Copyright (C) 2004-2008 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 "lpfc_hw.h" |
| #include "lpfc_sli.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" |
| |
| /* |
| * Define macro to log: Mailbox command x%x cannot issue Data |
| * This allows multiple uses of lpfc_msgBlk0311 |
| * w/o perturbing log msg utility. |
| */ |
| #define LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag) \ |
| lpfc_printf_log(phba, \ |
| KERN_INFO, \ |
| LOG_MBOX | LOG_SLI, \ |
| "(%d):0311 Mailbox command x%x cannot " \ |
| "issue Data: x%x x%x x%x\n", \ |
| pmbox->vport ? pmbox->vport->vpi : 0, \ |
| pmbox->mb.mbxCommand, \ |
| phba->pport->port_state, \ |
| psli->sli_flag, \ |
| flag) |
| |
| |
| /* 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; |
| |
| /** |
| * 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_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: 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) |
| { |
| 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); |
| 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 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_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: |
| 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: |
| 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->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 then 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->hbqbuf_in_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 struct lpfc_hbq_entry * |
| lpfc_sli_hbq_to_firmware(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 hbqe; |
| } |
| |
| /* HBQ for ELS and CT traffic. */ |
| static struct lpfc_hbq_init lpfc_els_hbq = { |
| .rn = 1, |
| .entry_count = 200, |
| .mask_count = 0, |
| .profile = 0, |
| .ring_mask = (1 << LPFC_ELS_RING), |
| .buffer_count = 0, |
| .init_count = 20, |
| .add_count = 5, |
| }; |
| |
| /* 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) |
| { |
| 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) |
| { |
| return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno, |
| lpfc_hbq_defs[qno]->init_count)); |
| } |
| |
| /** |
| * 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; |
| |
| 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) { |
| return hbq_buf; |
| } |
| } |
| 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: |
| ret = mbxCommand; |
| break; |
| default: |
| ret = MBX_SHUTDOWN; |
| break; |
| } |
| return ret; |
| } |
| |
| /** |
| * lpfc_sli_wake_mbox_wait: Completion handler for mbox issued from |
| * lpfc_sli_issue_mbox_wait. |
| * @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. |
| **/ |
| static 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; |
| int rc; |
| |
| mp = (struct lpfc_dmabuf *) (pmb->context1); |
| |
| if (mp) { |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| } |
| |
| /* |
| * 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->mb.mbxCommand == MBX_REG_LOGIN64 && |
| !pmb->mb.mbxStatus) { |
| |
| rpi = pmb->mb.un.varWords[0]; |
| lpfc_unreg_login(phba, pmb->mb.un.varRegLogin.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; |
| } |
| |
| mempool_free(pmb, phba->mbox_mem_pool); |
| return; |
| } |
| |
| /** |
| * 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->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) { |
| /* Unknow mailbox command compl */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, |
| "(%d):0323 Unknown Mailbox command " |
| "%x Cmpl\n", |
| pmb->vport ? pmb->vport->vpi : 0, |
| pmbox->mbxCommand); |
| 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\n", |
| pmb->vport ? pmb->vport->vpi :0, |
| pmbox->mbxCommand, |
| pmbox->mbxStatus, |
| pmbox->un.varWords[0], |
| pmb->vport->port_state); |
| pmbox->mbxStatus = 0; |
| pmbox->mbxOwner = OWN_HOST; |
| spin_lock_irq(&phba->hbalock); |
| phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| spin_unlock_irq(&phba->hbalock); |
| rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); |
| if (rc == MBX_SUCCESS) |
| continue; |
| } |
| } |
| |
| /* Mailbox cmd <cmd> Cmpl <cmpl> */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, |
| "(%d):0307 Mailbox cmd 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, |
| 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_replace_hbqbuff: Replace the HBQ buffer with a new buffer. |
| * @phba: Pointer to HBA context object. |
| * @tag: Tag for the HBQ buffer. |
| * |
| * This function is called from unsolicited event handler code path to get the |
| * HBQ buffer associated with an unsolicited iocb. This function is called with |
| * no lock held. It returns the buffer associated with the given tag and posts |
| * another buffer to the firmware. Note that the new buffer must be allocated |
| * before taking the hbalock and that the hba lock must be held until it is |
| * finished with the hbq entry swap. |
| **/ |
| static struct lpfc_dmabuf * |
| lpfc_sli_replace_hbqbuff(struct lpfc_hba *phba, uint32_t tag) |
| { |
| struct hbq_dmabuf *hbq_entry, *new_hbq_entry; |
| uint32_t hbqno; |
| void *virt; /* virtual address ptr */ |
| dma_addr_t phys; /* mapped address */ |
| unsigned long flags; |
| |
| hbqno = tag >> 16; |
| new_hbq_entry = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba); |
| /* Check whether HBQ is still in use */ |
| spin_lock_irqsave(&phba->hbalock, flags); |
| if (!phba->hbq_in_use) { |
| if (new_hbq_entry) |
| (phba->hbqs[hbqno].hbq_free_buffer)(phba, |
| new_hbq_entry); |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| return NULL; |
| } |
| |
| hbq_entry = lpfc_sli_hbqbuf_find(phba, tag); |
| if (hbq_entry == NULL) { |
| if (new_hbq_entry) |
| (phba->hbqs[hbqno].hbq_free_buffer)(phba, |
| new_hbq_entry); |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| return NULL; |
| } |
| list_del(&hbq_entry->dbuf.list); |
| |
| if (new_hbq_entry == NULL) { |
| list_add_tail(&hbq_entry->dbuf.list, &phba->hbqbuf_in_list); |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| return &hbq_entry->dbuf; |
| } |
| new_hbq_entry->tag = -1; |
| phys = new_hbq_entry->dbuf.phys; |
| virt = new_hbq_entry->dbuf.virt; |
| new_hbq_entry->dbuf.phys = hbq_entry->dbuf.phys; |
| new_hbq_entry->dbuf.virt = hbq_entry->dbuf.virt; |
| hbq_entry->dbuf.phys = phys; |
| hbq_entry->dbuf.virt = virt; |
| lpfc_sli_free_hbq(phba, hbq_entry); |
| list_add_tail(&new_hbq_entry->dbuf.list, &phba->hbqbuf_in_list); |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| |
| return &new_hbq_entry->dbuf; |
| } |
| |
| /** |
| * 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) |
| { |
| if (tag & QUE_BUFTAG_BIT) |
| return lpfc_sli_ring_taggedbuf_get(phba, pring, tag); |
| else |
| return lpfc_sli_replace_hbqbuff(phba, tag); |
| } |
| |
| |
| /** |
| * 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, i; |
| struct lpfc_iocbq *iocbq; |
| struct lpfc_dmabuf *dmzbuf; |
| |
| match = 0; |
| irsp = &(saveq->iocb); |
| |
| if (irsp->ulpStatus == IOSTAT_NEED_BUFFER) |
| return 1; |
| 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_ELS_REQ; |
| Type = FC_ELS_DATA; |
| } 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_ELS_REQ; |
| Type = FC_ELS_DATA; |
| w5p->hcsw.Rctl = Rctl; |
| w5p->hcsw.Type = Type; |
| } |
| } |
| |
| /* 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); |
| match = 1; |
| } else { |
| /* We must search, based on rctl / type |
| for the right routine */ |
| for (i = 0; i < pring->num_mask; i++) { |
| if ((pring->prt[i].rctl == Rctl) |
| && (pring->prt[i].type == Type)) { |
| if (pring->prt[i].lpfc_sli_rcv_unsol_event) |
| (pring->prt[i].lpfc_sli_rcv_unsol_event) |
| (phba, pring, saveq); |
| match = 1; |
| break; |
| } |
| } |
| } |
| if (match == 0) { |
| /* Unexpected Rctl / Type received */ |
| /* Ring <ringno> handler: unexpected |
| Rctl <Rctl> Type <Type> received */ |
| 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_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) { |
| /* |
| * Post all ELS completions to the worker thread. |
| * All other are passed to the completion callback. |
| */ |
| if (pring->ringno == LPFC_ELS_RING) { |
| if (cmdiocbp->iocb_flag & LPFC_DRIVER_ABORTED) { |
| cmdiocbp->iocb_flag &= |
| ~LPFC_DRIVER_ABORTED; |
| 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. |
| */ |
| saveq->iocb_flag |= LPFC_DELAY_MEM_FREE; |
| } |
| } |
| (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_vlog(cmdiocbp->vport, 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 then |
| * rsp ring <portRspMax> |
| */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0312 Ring %d handler: portRspPut %d " |
| "is bigger then 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_sli_poll_fcp_ring: Handle FCP ring completion in polling mode. |
| * @phba: Pointer to HBA context object. |
| * |
| * This function is called from lpfc_queuecommand, lpfc_poll_timeout, |
| * lpfc_abort_handler and lpfc_slave_configure when FCP_RING_POLLING |
| * is enabled. |
| * |
| * 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. |
| **/ |
| void lpfc_sli_poll_fcp_ring(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli *psli = &phba->sli; |
| struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING]; |
| IOCB_t *irsp = NULL; |
| IOCB_t *entry = NULL; |
| struct lpfc_iocbq *cmdiocbq = NULL; |
| struct lpfc_iocbq rspiocbq; |
| struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno]; |
| uint32_t status; |
| uint32_t portRspPut, portRspMax; |
| int type; |
| uint32_t rsp_cmpl = 0; |
| uint32_t ha_copy; |
| unsigned long iflags; |
| |
| 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); |
| return; |
| } |
| |
| rmb(); |
| while (pring->rspidx != portRspPut) { |
| entry = lpfc_resp_iocb(phba, pring); |
| if (++pring->rspidx >= portRspMax) |
| pring->rspidx = 0; |
| |
| lpfc_sli_pcimem_bcopy((uint32_t *) entry, |
| (uint32_t *) &rspiocbq.iocb, |
| phba->iocb_rsp_size); |
| irsp = &rspiocbq.iocb; |
| type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK); |
| pring->stats.iocb_rsp++; |
| rsp_cmpl++; |
| |
| if (unlikely(irsp->ulpStatus)) { |
| /* Rsp ring <ringno> error: IOCB */ |
| lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, |
| "0326 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, |
| "0314 IOCB cmd 0x%x " |
| "processed. Skipping " |
| "completion", |
| irsp->ulpCommand); |
| break; |
| } |
| |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring, |
| &rspiocbq); |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) { |
| (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, |
| &rspiocbq); |
| } |
| 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, |
| "0321 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); |
| } |
| |
| ha_copy = readl(phba->HAregaddr); |
| ha_copy >>= (LPFC_FCP_RING * 4); |
| |
| if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) { |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| pring->stats.iocb_rsp_full++; |
| status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4)); |
| writel(status, phba->CAregaddr); |
| readl(phba->CAregaddr); |
| spin_unlock_irqrestore(&phba->hbalock, iflags); |
| } |
| if ((ha_copy & HA_R0CE_RSP) && |
| (pring->flag & LPFC_CALL_RING_AVAILABLE)) { |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| 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, iflags); |
| } |
| |
| 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. This function always returns 1. |
| **/ |
| static 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; |
| } |
| |
| 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); |
| lpfc_adjust_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)) { |
| if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
| (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, |
| &rspiocbq); |
| } else { |
| 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); |
| |
| } |
| |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return rc; |
| } |
| |
| /** |
| * lpfc_sli_handle_slow_ring_event: Handle ring events 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 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 lpfc_sli_process_sol_iocb function if the |
| * response iocb indicates a completion of a command iocb. The function |
| * will call 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 0 when the allocated |
| * iocbs are not freed, otherwise returns 1. |
| **/ |
| int |
| lpfc_sli_handle_slow_ring_event(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; |
| struct lpfc_iocbq *next_iocb; |
| struct lpfc_iocbq *cmdiocbp; |
| struct lpfc_iocbq *saveq; |
| uint8_t iocb_cmd_type; |
| lpfc_iocb_type type; |
| uint32_t status, free_saveq; |
| uint32_t portRspPut, portRspMax; |
| int rc = 1; |
| unsigned long iflag; |
| |
| 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 then |
| * rsp ring <portRspMax> |
| */ |
| lpfc_printf_log(phba, KERN_ERR, LOG_SLI, |
| "0303 Ring %d handler: portRspPut %d " |
| "is bigger then 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 1; |
| } |
| |
| 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); |
| |
| list_add_tail(&rspiocbp->list, &(pring->iocb_continueq)); |
| |
| pring->iocb_continueq_cnt++; |
| 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); |
| lpfc_adjust_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); |
| if (type == LPFC_SOL_IOCB) { |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| rc = lpfc_sli_process_sol_iocb(phba, pring, |
| saveq); |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| } else if (type == 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; |
| } else if (type == LPFC_ABORT_IOCB) { |
| if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) && |
| ((cmdiocbp = |
| lpfc_sli_iocbq_lookup(phba, pring, |
| saveq)))) { |
| /* 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); |
| } |
| } else if (type == 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); |
| } |
| } |
| |
| 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; |
| } |
| |
| /* |
| * 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 rc; |
| } |
| |
| /** |
| * 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; |
| IOCB_t *cmd = NULL; |
| |
| 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); |
| |
| while (!list_empty(&completions)) { |
| iocb = list_get_first(&completions, struct lpfc_iocbq, list); |
| cmd = &iocb->iocb; |
| list_del_init(&iocb->list); |
| |
| if (!iocb->iocb_cmpl) |
| lpfc_sli_release_iocbq(phba, iocb); |
| else { |
| cmd->ulpStatus = IOSTAT_LOCAL_REJECT; |
| cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; |
| (iocb->iocb_cmpl) (phba, iocb, iocb); |
| } |
| } |
| } |
| |
| /** |
| * 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_iocbq *iocb; |
| IOCB_t *cmd = NULL; |
| 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 */ |
| while (!list_empty(&txq)) { |
| iocb = list_get_first(&txq, struct lpfc_iocbq, list); |
| cmd = &iocb->iocb; |
| list_del_init(&iocb->list); |
| |
| if (!iocb->iocb_cmpl) |
| lpfc_sli_release_iocbq(phba, iocb); |
| else { |
| cmd->ulpStatus = IOSTAT_LOCAL_REJECT; |
| cmd->un.ulpWord[4] = IOERR_SLI_DOWN; |
| (iocb->iocb_cmpl) (phba, iocb, iocb); |
| } |
| } |
| |
| /* Flush the txcmpq */ |
| while (!list_empty(&txcmplq)) { |
| iocb = list_get_first(&txcmplq, struct lpfc_iocbq, list); |
| cmd = &iocb->iocb; |
| list_del_init(&iocb->list); |
| |
| if (!iocb->iocb_cmpl) |
| lpfc_sli_release_iocbq(phba, iocb); |
| else { |
| cmd->ulpStatus = IOSTAT_LOCAL_REJECT; |
| cmd->un.ulpWord[4] = IOERR_SLI_DOWN; |
| (iocb->iocb_cmpl) (phba, iocb, iocb); |
| } |
| } |
| } |
| |
| /** |
| * lpfc_sli_brdready: Check for host status bits. |
| * @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. |
| **/ |
| int |
| lpfc_sli_brdready(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; |
| } |
| |
| #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_SLI2_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; |
| } |
| |
| psli->sli_flag &= ~LPFC_SLI2_ACTIVE; |
| |
| 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; |
| phba->link_flag &= ~LS_IGNORE_ERATT; |
| spin_unlock_irq(&phba->hbalock); |
| |
| psli->mbox_active = NULL; |
| lpfc_hba_down_post(phba); |
| phba->link_state = LPFC_HBA_ERROR; |
| |
| return ha_copy & HA_ERATT ? 0 : 1; |
| } |
| |
| /** |
| * lpfc_sli_brdreset: Reset the 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->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_SLI2_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_sli_brdrestart: Restart the 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. |
| **/ |
| int |
| lpfc_sli_brdrestart(struct lpfc_hba *phba) |
| { |
| MAILBOX_t *mb; |
| struct lpfc_sli *psli; |
| uint16_t skip_post; |
| volatile uint32_t word0; |
| void __iomem *to_slim; |
| |
| spin_lock_irq(&phba->hbalock); |
| |
| 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) { |
| skip_post = 1; |
| word0 = 1; /* This is really setting up word1 */ |
| } else { |
| skip_post = 0; |
| 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; |
| |
| spin_unlock_irq(&phba->hbalock); |
| |
| memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets)); |
| psli->stats_start = get_seconds(); |
| |
| if (skip_post) |
| mdelay(100); |
| else |
| mdelay(2000); |
| |
| lpfc_hba_down_post(phba); |
| |
| return 0; |
| } |
| |
| /** |
| * 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->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_do_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. |
| **/ |
| static int |
| lpfc_do_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); |
| msleep(2500); |
| 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); |
| 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->mb.mbxCommand, pmb->mb.mbxStatus, 0); |
| spin_lock_irq(&phba->hbalock); |
| phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE; |
| spin_unlock_irq(&phba->hbalock); |
| rc = -ENXIO; |
| } else |
| done = 1; |
| } |
| if (!done) { |
| rc = -EINVAL; |
| goto do_prep_failed; |
| } |
| if (pmb->mb.un.varCfgPort.sli_mode == 3) { |
| if (!pmb->mb.un.varCfgPort.cMA) { |
| rc = -ENXIO; |
| goto do_prep_failed; |
| } |
| if (phba->max_vpi && pmb->mb.un.varCfgPort.gmv) { |
| phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; |
| phba->max_vpi = pmb->mb.un.varCfgPort.max_vpi; |
| } else |
| phba->max_vpi = 0; |
| if (pmb->mb.un.varCfgPort.gerbm) |
| phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED; |
| if (pmb->mb.un.varCfgPort.gcrp) |
| phba->sli3_options |= LPFC_SLI3_CRP_ENABLED; |
| if (pmb->mb.un.varCfgPort.ginb) { |
| phba->sli3_options |= LPFC_SLI3_INB_ENABLED; |
| 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->port_gp = phba->mbox->us.s3_pgp.port; |
| phba->inb_ha_copy = NULL; |
| phba->inb_counter = NULL; |
| } |
| } else { |
| 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_do_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_do_config_port(phba, 2); |
| if (rc) |
| goto lpfc_sli_hba_setup_error; |
| |
| 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; |
| } |
| |
| phba->sli.sli_flag |= LPFC_PROCESS_LA; |
| |
| 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_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->mb; |
| struct lpfc_sli *psli = &phba->sli; |
| struct lpfc_sli_ring *pring; |
| |
| if (!(phba->pport->work_port_events & WORKER_MBOX_TMO)) { |
| 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); |
| |
| /* 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_SLI2_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"); |
| /* |
| * lpfc_offline calls lpfc_sli_hba_down which will clean up |
| * on oustanding mailbox commands. |
| */ |
| /* If resets are disabled then set error state and return. */ |
| if (!phba->cfg_enable_hba_reset) { |
| phba->link_state = LPFC_HBA_ERROR; |
| return; |
| } |
| lpfc_offline_prep(phba); |
| lpfc_offline(phba); |
| lpfc_sli_brdrestart(phba); |
| lpfc_online(phba); |
| lpfc_unblock_mgmt_io(phba); |
| return; |
| } |
| |
| /** |
| * lpfc_sli_issue_mbox: Issue a 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. 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. |
| **/ |
| int |
| lpfc_sli_issue_mbox(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) { |
| /* processing mbox queue from intr_handler */ |
| processing_queue = 1; |
| phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| 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->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; |
| } |
| |
| psli = &phba->sli; |
| |
| mb = &pmbox->mb; |
| status = MBX_SUCCESS; |
| |
| if (phba->link_state == LPFC_HBA_ERROR) { |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| |
| /* Mbox command <mbxCommand> cannot issue */ |
| LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, 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); |
| LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, 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 */ |
| LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag); |
| goto out_not_finished; |
| } |
| |
| if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) { |
| spin_unlock_irqrestore(&phba->hbalock, drvr_flag); |
| /* Mbox command <mbxCommand> cannot issue */ |
| LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, 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_SLI2_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 */ |
| LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, 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_SLI2_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_SLI2_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_SLI2_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_SLI2_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_SLI2_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_SLI2_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->mb.mbxStatus = MBX_NOT_FINISHED; |
| lpfc_mbox_cmpl_put(phba, pmbox); |
| } |
| return MBX_NOT_FINISHED; |
| } |
| |
| /** |
| * __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: Lockless version of 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 used by other functions in the driver |
| * to issue an iocb command to the HBA. If the PCI slot is recovering |
| * from error state or 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(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq *piocb, uint32_t flag) |
| { |
| struct lpfc_iocbq *nextiocb; |
| IOCB_t *iocb; |
| |
| 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; |
| |
| /* |
| * 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_FCP_CMND) || |
| (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_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, struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq *piocb, uint32_t flag) |
| { |
| unsigned long iflags; |
| int rc; |
| |
| spin_lock_irqsave(&phba->hbalock, iflags); |
| rc = __lpfc_sli_issue_iocb(phba, pring, 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; |
| |
| icmd = &iocbq->iocb; |
| evt_code = icmd->un.asyncstat.evt_code; |
| temp = icmd->ulpContext; |
| |
| if ((evt_code != ASYNC_TEMP_WARN) && |
| (evt_code != ASYNC_TEMP_SAFE)) { |
| lpfc_printf_log(phba, |
| KERN_ERR, |
| LOG_SLI, |
| "0346 Ring %d handler: unexpected ASYNC_STATUS" |
| " evt_code 0x%x\n", |
| pring->ringno, |
| icmd->un.asyncstat.evt_code); |
| 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, |
| SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX); |
| |
| } |
| |
| |
| /** |
| * 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 = 4; |
| pring->prt[0].profile = 0; /* Mask 0 */ |
| pring->prt[0].rctl = FC_ELS_REQ; |
| pring->prt[0].type = FC_ELS_DATA; |
| pring->prt[0].lpfc_sli_rcv_unsol_event = |
| lpfc_els_unsol_event; |
| pring->prt[1].profile = 0; /* Mask 1 */ |
| pring->prt[1].rctl = FC_ELS_RSP; |
| pring->prt[1].type = FC_ELS_DATA; |
| 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_UNSOL_CTL; |
| /* NameServer */ |
| pring->prt[2].type = FC_COMMON_TRANSPORT_ULP; |
| 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_SOL_CTL; |
| /* NameServer */ |
| pring->prt[3].type = FC_COMMON_TRANSPORT_ULP; |
| pring->prt[3].lpfc_sli_rcv_unsol_event = |
| lpfc_ct_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_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); |
| |
| while (!list_empty(&completions)) { |
| list_remove_head(&completions, iocb, struct lpfc_iocbq, list); |
| |
| if (!iocb->iocb_cmpl) |
| lpfc_sli_release_iocbq(phba, iocb); |
| else { |
| iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT; |
| iocb->iocb.un.ulpWord[4] = IOERR_SLI_DOWN; |
| (iocb->iocb_cmpl) (phba, iocb, iocb); |
| } |
| } |
| 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; |
| LPFC_MBOXQ_t *pmb; |
| struct lpfc_iocbq *iocb; |
| IOCB_t *cmd = NULL; |
| int i; |
| unsigned long flags = 0; |
| |
| 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); |
| |
| while (!list_empty(&completions)) { |
| list_remove_head(&completions, iocb, struct lpfc_iocbq, list); |
| cmd = &iocb->iocb; |
| |
| if (!iocb->iocb_cmpl) |
| lpfc_sli_release_iocbq(phba, iocb); |
| else { |
| cmd->ulpStatus = IOSTAT_LOCAL_REJECT; |
| cmd->un.ulpWord[4] = IOERR_SLI_DOWN; |
| (iocb->iocb_cmpl) (phba, iocb, iocb); |
| } |
| } |
| |
| 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->hbalock, flags); |
| |
| spin_lock(&phba->pport->work_port_lock); |
| phba->pport->work_port_events &= ~WORKER_MBOX_TMO; |
| spin_unlock(&phba->pport->work_port_lock); |
| |
| /* Return any pending or completed mbox cmds */ |
| list_splice_init(&phba->sli.mboxq, &completions); |
| if (psli->mbox_active) { |
| list_add_tail(&psli->mbox_active->list, &completions); |
| psli->mbox_active = NULL; |
| psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; |
| } |
| list_splice_init(&phba->sli.mboxq_cmpl, &completions); |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| |
| while (!list_empty(&completions)) { |
| list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list); |
| pmb->mb.mbxStatus = MBX_NOT_FINISHED; |
| if (pmb->mbox_cmpl) |
| pmb->mbox_cmpl(phba,pmb); |
| } |
| 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_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: Tag allocation function for a buffer posted |
| * using CMD_QUE_XRI64_CX iocb. |
| * @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: Search HBQ buffer associated with |
| * posted using CMD_QUE_XRI64_CX iocb. |
| * @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: SLI2 buffer search function 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 (abort_iotag != 0 && abort_iotag <= phba->sli.last_iotag) |
| abort_iocb = phba->sli.iocbq_lookup[abort_iotag]; |
| |
| 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) { |
| spin_unlock_irq(&phba->hbalock); |
| lpfc_sli_release_iocbq(phba, cmdiocb); |
| return; |
| } |
| /* |
| * 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 { |
| 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. |
| */ |
| abort_iocb->iocb_flag |= LPFC_DELAY_MEM_FREE; |
| |
| abort_iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED; |
| abort_iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT; |
| abort_iocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED; |
| (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; |
| iabt->un.acxri.abortIoTag = icmd->ulpIoTag; |
| iabt->ulpLe = 1; |
| iabt->ulpClass = icmd->ulpClass; |
| |
| 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, 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: Filtering function, used to find commands |
| * associated with a vport/SCSI target/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 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 an aborted |
| * FCP iocb. |
| * @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: This function issue abort for all SCSI commands |
| * pending on a SCSI host(vport)/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; |
| abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag; |
| abtsiocb->iocb.ulpLe = 1; |
| abtsiocb->iocb.ulpClass = cmd->ulpClass; |
| abtsiocb->vport = phba->pport; |
| |
| 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, abtsiocb, 0); |
| if (ret_val == IOCB_ERROR) { |
| lpfc_sli_release_iocbq(phba, abtsiocb); |
| errcnt++; |
| continue; |
| } |
| } |
| |
| return errcnt; |
| } |
| |
| /** |
| * lpfc_sli_wake_iocb_wait: iocb completion handler for iocb issued using |
| * lpfc_sli_issue_iocb_wait. |
| * @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_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, |
| struct lpfc_sli_ring *pring, |
| 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, pring, piocb, 0); |
| if (retval == IOCB_SUCCESS) { |
| timeout_req = timeout * HZ; |
| timeleft = wait_event_timeout(done_q, |
| piocb->iocb_flag & 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_flush_mbox_queue: mailbox queue cleanup function. |
| * @phba: Pointer to HBA context. |
| * |
| * This function is called to cleanup any pending mailbox |
| * objects in the driver queue before bringing the HBA offline. |
| * This function is called while resetting the HBA. |
| * The function is called without any lock held. The function |
| * takes hbalock to update SLI data structure. |
| * This function returns 1 when there is an active mailbox |
| * command pending else returns 0. |
| **/ |
| int |
| lpfc_sli_flush_mbox_queue(struct lpfc_hba * phba) |
| { |
| struct lpfc_vport *vport = phba->pport; |
| int i = 0; |
| uint32_t ha_copy; |
| |
| while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE && !vport->stopped) { |
| if (i++ > LPFC_MBOX_TMO * 1000) |
| return 1; |
| |
| /* |
| * Call lpfc_sli_handle_mb_event only if a mailbox cmd |
| * did finish. This way we won't get the misleading |
| * "Stray Mailbox Interrupt" message. |
| */ |
| spin_lock_irq(&phba->hbalock); |
| ha_copy = phba->work_ha; |
| phba->work_ha &= ~HA_MBATT; |
| spin_unlock_irq(&phba->hbalock); |
| |
| if (ha_copy & HA_MBATT) |
| if (lpfc_sli_handle_mb_event(phba) == 0) |
| i = 0; |
| |
| msleep(1); |
| } |
| |
| return (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) ? 1 : 0; |
| } |
| |
| /** |
| * lpfc_intr_handler: The interrupt handler of lpfc driver. |
| * @irq: Interrupt number. |
| * @dev_id: The device context pointer. |
| * |
| * This function is called from the PCI layer when there is |
| * an event in the HBA which requires driver attention. When |
| * the PCI slot is in error recovery or the HBA is undergoing |
| * initialization the interrupt handler will not process the |
| * interrupt. |
| * The error attention, 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. |
| * The SCSI ring event and mailbox events are handled in the |
| * interrupt 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_intr_handler(int irq, void *dev_id) |
| { |
| struct lpfc_hba *phba; |
| uint32_t ha_copy; |
| uint32_t work_ha_copy; |
| unsigned long status; |
| 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; |
| |
| /* If the pci channel is offline, ignore all the interrupts. */ |
| if (unlikely(pci_channel_offline(phba->pcidev))) |
| return IRQ_NONE; |
| |
| phba->sli.slistat.sli_intr++; |
| |
| /* |
| * Call the HBA to see if it is interrupting. If not, don't claim |
| * the interrupt |
| */ |
| |
| /* Ignore all interrupts during initialization. */ |
| if (unlikely(phba->link_state < LPFC_LINK_DOWN)) |
| return IRQ_NONE; |
| |
| /* |
| * Read host attention register to determine interrupt source |
| * Clear Attention Sources, except Error Attention (to |
| * preserve status) and Link Attention |
| */ |
| spin_lock(&phba->hbalock); |
| if (phba->sli3_options & LPFC_SLI3_INB_ENABLED && |
| (phba->inb_last_counter != *phba->inb_counter)) { |
| phba->inb_last_counter = *phba->inb_counter; |
| ha_copy = le32_to_cpu(*phba->inb_ha_copy); |
| } else |
| ha_copy = readl(phba->HAregaddr); |
| if (unlikely(!ha_copy)) { |
| spin_unlock(&phba->hbalock); |
| return IRQ_NONE; |
| } |
| /* 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; |
| writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr); |
| readl(phba->HAregaddr); /* flush */ |
| spin_unlock(&phba->hbalock); |
| |
| work_ha_copy = ha_copy & phba->work_ha_mask; |
| |
| if (unlikely(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(&phba->hbalock); |
| 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(&phba->hbalock); |
| } |
| 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(&phba->hbalock); |
| 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(&phba->hbalock); |
| } |
| } |
| |
| if (work_ha_copy & HA_ERATT) { |
| /* |
| * There was a link/board error. Read the |
| * status register to retrieve the error event |
| * and process it. |
| */ |
| phba->sli.slistat.err_attn_event++; |
| /* Save status info */ |
| phba->work_hs = readl(phba->HSregaddr); |
| phba->work_status[0] = readl(phba->MBslimaddr + 0xa8); |
| phba->work_status[1] = readl(phba->MBslimaddr + 0xac); |
| |
| /* Clear Chip error bit */ |
| writel(HA_ERATT, phba->HAregaddr); |
| readl(phba->HAregaddr); /* flush */ |
| phba->pport->stopped = 1; |
| } |
| |
| spin_lock(&phba->hbalock); |
| if ((work_ha_copy & HA_MBATT) && |
| (phba->sli.mbox_active)) { |
| pmb = phba->sli.mbox_active; |
| pmbox = &pmb->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(&phba->hbalock); |
| /* |
| * 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(&phba->hbalock); |
| 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"); |
| goto send_current_mbox; |
| } |
| } |
| spin_lock(&phba->pport->work_port_lock); |
| phba->pport->work_port_events &= |
| ~WORKER_MBOX_TMO; |
| spin_unlock(&phba->pport->work_port_lock); |
| lpfc_mbox_cmpl_put(phba, pmb); |
| } |
| } else |
| spin_unlock(&phba->hbalock); |
| 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"); |
| } |
| |
| spin_lock(&phba->hbalock); |
| phba->work_ha |= work_ha_copy; |
| spin_unlock(&phba->hbalock); |
| lpfc_worker_wake_up(phba); |
| } |
| |
| ha_copy &= ~(phba->work_ha_mask); |
| |
| /* |
| * Process all events on FCP ring. Take the optimized path for |
| * FCP IO. Any other IO is slow path and is handled by |
| * the worker thread. |
| */ |
| 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. Any other IO is slow path and is handled |
| * by the worker thread. |
| */ |
| 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_intr_handler */ |