| /* |
| * Copyright (c) 2005-2009 Brocade Communications Systems, Inc. |
| * All rights reserved |
| * www.brocade.com |
| * |
| * Linux driver for Brocade Fibre Channel Host Bus Adapter. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License (GPL) Version 2 as |
| * published by the Free Software Foundation |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| */ |
| |
| /** |
| * bfad_im.c Linux driver IM module. |
| */ |
| |
| #include <linux/slab.h> |
| #include "bfad_drv.h" |
| #include "bfad_im.h" |
| #include "bfad_trcmod.h" |
| #include "bfa_cb_ioim_macros.h" |
| #include <fcb/bfa_fcb_fcpim.h> |
| |
| BFA_TRC_FILE(LDRV, IM); |
| |
| DEFINE_IDR(bfad_im_port_index); |
| struct scsi_transport_template *bfad_im_scsi_transport_template; |
| struct scsi_transport_template *bfad_im_scsi_vport_transport_template; |
| static void bfad_im_itnim_work_handler(struct work_struct *work); |
| static int bfad_im_queuecommand(struct scsi_cmnd *cmnd, |
| void (*done)(struct scsi_cmnd *)); |
| static int bfad_im_slave_alloc(struct scsi_device *sdev); |
| |
| void |
| bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio, |
| enum bfi_ioim_status io_status, u8 scsi_status, |
| int sns_len, u8 *sns_info, s32 residue) |
| { |
| struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; |
| struct bfad_s *bfad = drv; |
| struct bfad_itnim_data_s *itnim_data; |
| struct bfad_itnim_s *itnim; |
| u8 host_status = DID_OK; |
| |
| switch (io_status) { |
| case BFI_IOIM_STS_OK: |
| bfa_trc(bfad, scsi_status); |
| scsi_set_resid(cmnd, 0); |
| |
| if (sns_len > 0) { |
| bfa_trc(bfad, sns_len); |
| if (sns_len > SCSI_SENSE_BUFFERSIZE) |
| sns_len = SCSI_SENSE_BUFFERSIZE; |
| memcpy(cmnd->sense_buffer, sns_info, sns_len); |
| } |
| if (residue > 0) { |
| bfa_trc(bfad, residue); |
| scsi_set_resid(cmnd, residue); |
| if (!sns_len && (scsi_status == SAM_STAT_GOOD) && |
| (scsi_bufflen(cmnd) - residue) < |
| cmnd->underflow) { |
| bfa_trc(bfad, 0); |
| host_status = DID_ERROR; |
| } |
| } |
| cmnd->result = ScsiResult(host_status, scsi_status); |
| |
| break; |
| |
| case BFI_IOIM_STS_ABORTED: |
| case BFI_IOIM_STS_TIMEDOUT: |
| case BFI_IOIM_STS_PATHTOV: |
| default: |
| cmnd->result = ScsiResult(DID_ERROR, 0); |
| } |
| |
| /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ |
| if (cmnd->device->host != NULL) |
| scsi_dma_unmap(cmnd); |
| |
| cmnd->host_scribble = NULL; |
| bfa_trc(bfad, cmnd->result); |
| |
| itnim_data = cmnd->device->hostdata; |
| if (itnim_data) { |
| itnim = itnim_data->itnim; |
| if (!cmnd->result && itnim && |
| (bfa_lun_queue_depth > cmnd->device->queue_depth)) { |
| /* Queue depth adjustment for good status completion */ |
| bfad_os_ramp_up_qdepth(itnim, cmnd->device); |
| } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) { |
| /* qfull handling */ |
| bfad_os_handle_qfull(itnim, cmnd->device); |
| } |
| } |
| |
| cmnd->scsi_done(cmnd); |
| } |
| |
| void |
| bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio) |
| { |
| struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; |
| struct bfad_itnim_data_s *itnim_data; |
| struct bfad_itnim_s *itnim; |
| |
| cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD); |
| |
| /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ |
| if (cmnd->device->host != NULL) |
| scsi_dma_unmap(cmnd); |
| |
| cmnd->host_scribble = NULL; |
| |
| /* Queue depth adjustment */ |
| if (bfa_lun_queue_depth > cmnd->device->queue_depth) { |
| itnim_data = cmnd->device->hostdata; |
| if (itnim_data) { |
| itnim = itnim_data->itnim; |
| if (itnim) |
| bfad_os_ramp_up_qdepth(itnim, cmnd->device); |
| } |
| } |
| |
| cmnd->scsi_done(cmnd); |
| } |
| |
| void |
| bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio) |
| { |
| struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; |
| struct bfad_s *bfad = drv; |
| |
| cmnd->result = ScsiResult(DID_ERROR, 0); |
| |
| /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ |
| if (cmnd->device->host != NULL) |
| scsi_dma_unmap(cmnd); |
| |
| bfa_trc(bfad, cmnd->result); |
| cmnd->host_scribble = NULL; |
| } |
| |
| void |
| bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk, |
| enum bfi_tskim_status tsk_status) |
| { |
| struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk; |
| wait_queue_head_t *wq; |
| |
| cmnd->SCp.Status |= tsk_status << 1; |
| set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status); |
| wq = (wait_queue_head_t *) cmnd->SCp.ptr; |
| cmnd->SCp.ptr = NULL; |
| |
| if (wq) |
| wake_up(wq); |
| } |
| |
| void |
| bfa_cb_ioim_resfree(void *drv) |
| { |
| } |
| |
| /** |
| * Scsi_Host_template SCSI host template |
| */ |
| /** |
| * Scsi_Host template entry, returns BFAD PCI info. |
| */ |
| static const char * |
| bfad_im_info(struct Scsi_Host *shost) |
| { |
| static char bfa_buf[256]; |
| struct bfad_im_port_s *im_port = |
| (struct bfad_im_port_s *) shost->hostdata[0]; |
| struct bfad_s *bfad = im_port->bfad; |
| char model[BFA_ADAPTER_MODEL_NAME_LEN]; |
| |
| bfa_get_adapter_model(&bfad->bfa, model); |
| |
| memset(bfa_buf, 0, sizeof(bfa_buf)); |
| snprintf(bfa_buf, sizeof(bfa_buf), |
| "Brocade FC/FCOE Adapter, " "model: %s hwpath: %s driver: %s", |
| model, bfad->pci_name, BFAD_DRIVER_VERSION); |
| return bfa_buf; |
| } |
| |
| /** |
| * Scsi_Host template entry, aborts the specified SCSI command. |
| * |
| * Returns: SUCCESS or FAILED. |
| */ |
| static int |
| bfad_im_abort_handler(struct scsi_cmnd *cmnd) |
| { |
| struct Scsi_Host *shost = cmnd->device->host; |
| struct bfad_im_port_s *im_port = |
| (struct bfad_im_port_s *) shost->hostdata[0]; |
| struct bfad_s *bfad = im_port->bfad; |
| struct bfa_ioim_s *hal_io; |
| unsigned long flags; |
| u32 timeout; |
| int rc = FAILED; |
| |
| spin_lock_irqsave(&bfad->bfad_lock, flags); |
| hal_io = (struct bfa_ioim_s *) cmnd->host_scribble; |
| if (!hal_io) { |
| /* IO has been completed, retrun success */ |
| rc = SUCCESS; |
| goto out; |
| } |
| if (hal_io->dio != (struct bfad_ioim_s *) cmnd) { |
| rc = FAILED; |
| goto out; |
| } |
| |
| bfa_trc(bfad, hal_io->iotag); |
| bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT, |
| im_port->shost->host_no, cmnd, hal_io->iotag); |
| bfa_ioim_abort(hal_io); |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| |
| /* Need to wait until the command get aborted */ |
| timeout = 10; |
| while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) { |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| schedule_timeout(timeout); |
| if (timeout < 4 * HZ) |
| timeout *= 2; |
| } |
| |
| cmnd->scsi_done(cmnd); |
| bfa_trc(bfad, hal_io->iotag); |
| bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT_COMP, |
| im_port->shost->host_no, cmnd, hal_io->iotag); |
| return SUCCESS; |
| out: |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| return rc; |
| } |
| |
| static bfa_status_t |
| bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd, |
| struct bfad_itnim_s *itnim) |
| { |
| struct bfa_tskim_s *tskim; |
| struct bfa_itnim_s *bfa_itnim; |
| bfa_status_t rc = BFA_STATUS_OK; |
| |
| tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd); |
| if (!tskim) { |
| BFA_DEV_PRINTF(bfad, BFA_ERR, |
| "target reset, fail to allocate tskim\n"); |
| rc = BFA_STATUS_FAILED; |
| goto out; |
| } |
| |
| /* |
| * Set host_scribble to NULL to avoid aborting a task command if |
| * happens. |
| */ |
| cmnd->host_scribble = NULL; |
| cmnd->SCp.Status = 0; |
| bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim); |
| bfa_tskim_start(tskim, bfa_itnim, (lun_t)0, |
| FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO); |
| out: |
| return rc; |
| } |
| |
| /** |
| * Scsi_Host template entry, resets a LUN and abort its all commands. |
| * |
| * Returns: SUCCESS or FAILED. |
| * |
| */ |
| static int |
| bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd) |
| { |
| struct Scsi_Host *shost = cmnd->device->host; |
| struct bfad_im_port_s *im_port = |
| (struct bfad_im_port_s *) shost->hostdata[0]; |
| struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata; |
| struct bfad_s *bfad = im_port->bfad; |
| struct bfa_tskim_s *tskim; |
| struct bfad_itnim_s *itnim; |
| struct bfa_itnim_s *bfa_itnim; |
| DECLARE_WAIT_QUEUE_HEAD(wq); |
| int rc = SUCCESS; |
| unsigned long flags; |
| enum bfi_tskim_status task_status; |
| |
| spin_lock_irqsave(&bfad->bfad_lock, flags); |
| itnim = itnim_data->itnim; |
| if (!itnim) { |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| rc = FAILED; |
| goto out; |
| } |
| |
| tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd); |
| if (!tskim) { |
| BFA_DEV_PRINTF(bfad, BFA_ERR, |
| "LUN reset, fail to allocate tskim"); |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| rc = FAILED; |
| goto out; |
| } |
| |
| /** |
| * Set host_scribble to NULL to avoid aborting a task command |
| * if happens. |
| */ |
| cmnd->host_scribble = NULL; |
| cmnd->SCp.ptr = (char *)&wq; |
| cmnd->SCp.Status = 0; |
| bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim); |
| bfa_tskim_start(tskim, bfa_itnim, |
| bfad_int_to_lun(cmnd->device->lun), |
| FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO); |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| |
| wait_event(wq, test_bit(IO_DONE_BIT, |
| (unsigned long *)&cmnd->SCp.Status)); |
| |
| task_status = cmnd->SCp.Status >> 1; |
| if (task_status != BFI_TSKIM_STS_OK) { |
| BFA_DEV_PRINTF(bfad, BFA_ERR, "LUN reset failure, status: %d\n", |
| task_status); |
| rc = FAILED; |
| } |
| |
| out: |
| return rc; |
| } |
| |
| /** |
| * Scsi_Host template entry, resets the bus and abort all commands. |
| */ |
| static int |
| bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd) |
| { |
| struct Scsi_Host *shost = cmnd->device->host; |
| struct bfad_im_port_s *im_port = |
| (struct bfad_im_port_s *) shost->hostdata[0]; |
| struct bfad_s *bfad = im_port->bfad; |
| struct bfad_itnim_s *itnim; |
| unsigned long flags; |
| u32 i, rc, err_cnt = 0; |
| DECLARE_WAIT_QUEUE_HEAD(wq); |
| enum bfi_tskim_status task_status; |
| |
| spin_lock_irqsave(&bfad->bfad_lock, flags); |
| for (i = 0; i < MAX_FCP_TARGET; i++) { |
| itnim = bfad_os_get_itnim(im_port, i); |
| if (itnim) { |
| cmnd->SCp.ptr = (char *)&wq; |
| rc = bfad_im_target_reset_send(bfad, cmnd, itnim); |
| if (rc != BFA_STATUS_OK) { |
| err_cnt++; |
| continue; |
| } |
| |
| /* wait target reset to complete */ |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| wait_event(wq, test_bit(IO_DONE_BIT, |
| (unsigned long *)&cmnd->SCp.Status)); |
| spin_lock_irqsave(&bfad->bfad_lock, flags); |
| |
| task_status = cmnd->SCp.Status >> 1; |
| if (task_status != BFI_TSKIM_STS_OK) { |
| BFA_DEV_PRINTF(bfad, BFA_ERR, |
| "target reset failure," |
| " status: %d\n", task_status); |
| err_cnt++; |
| } |
| } |
| } |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| |
| if (err_cnt) |
| return FAILED; |
| |
| return SUCCESS; |
| } |
| |
| /** |
| * Scsi_Host template entry slave_destroy. |
| */ |
| static void |
| bfad_im_slave_destroy(struct scsi_device *sdev) |
| { |
| sdev->hostdata = NULL; |
| return; |
| } |
| |
| /** |
| * BFA FCS itnim callbacks |
| */ |
| |
| /** |
| * BFA FCS itnim alloc callback, after successful PRLI |
| * Context: Interrupt |
| */ |
| void |
| bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim, |
| struct bfad_itnim_s **itnim_drv) |
| { |
| *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC); |
| if (*itnim_drv == NULL) |
| return; |
| |
| (*itnim_drv)->im = bfad->im; |
| *itnim = &(*itnim_drv)->fcs_itnim; |
| (*itnim_drv)->state = ITNIM_STATE_NONE; |
| |
| /* |
| * Initiaze the itnim_work |
| */ |
| INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler); |
| bfad->bfad_flags |= BFAD_RPORT_ONLINE; |
| } |
| |
| /** |
| * BFA FCS itnim free callback. |
| * Context: Interrupt. bfad_lock is held |
| */ |
| void |
| bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv) |
| { |
| struct bfad_port_s *port; |
| wwn_t wwpn; |
| u32 fcid; |
| char wwpn_str[32], fcid_str[16]; |
| |
| /* online to free state transtion should not happen */ |
| bfa_assert(itnim_drv->state != ITNIM_STATE_ONLINE); |
| |
| itnim_drv->queue_work = 1; |
| /* offline request is not yet done, use the same request to free */ |
| if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING) |
| itnim_drv->queue_work = 0; |
| |
| itnim_drv->state = ITNIM_STATE_FREE; |
| port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); |
| itnim_drv->im_port = port->im_port; |
| wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim); |
| fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim); |
| wwn2str(wwpn_str, wwpn); |
| fcid2str(fcid_str, fcid); |
| bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_FREE, |
| port->im_port->shost->host_no, |
| fcid_str, wwpn_str); |
| bfad_os_itnim_process(itnim_drv); |
| } |
| |
| /** |
| * BFA FCS itnim online callback. |
| * Context: Interrupt. bfad_lock is held |
| */ |
| void |
| bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv) |
| { |
| struct bfad_port_s *port; |
| |
| itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim); |
| port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); |
| itnim_drv->state = ITNIM_STATE_ONLINE; |
| itnim_drv->queue_work = 1; |
| itnim_drv->im_port = port->im_port; |
| bfad_os_itnim_process(itnim_drv); |
| } |
| |
| /** |
| * BFA FCS itnim offline callback. |
| * Context: Interrupt. bfad_lock is held |
| */ |
| void |
| bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv) |
| { |
| struct bfad_port_s *port; |
| struct bfad_s *bfad; |
| |
| port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); |
| bfad = port->bfad; |
| if ((bfad->pport.flags & BFAD_PORT_DELETE) || |
| (port->flags & BFAD_PORT_DELETE)) { |
| itnim_drv->state = ITNIM_STATE_OFFLINE; |
| return; |
| } |
| itnim_drv->im_port = port->im_port; |
| itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING; |
| itnim_drv->queue_work = 1; |
| bfad_os_itnim_process(itnim_drv); |
| } |
| |
| /** |
| * BFA FCS itnim timeout callback. |
| * Context: Interrupt. bfad_lock is held |
| */ |
| void bfa_fcb_itnim_tov(struct bfad_itnim_s *itnim) |
| { |
| itnim->state = ITNIM_STATE_TIMEOUT; |
| } |
| |
| /** |
| * Allocate a Scsi_Host for a port. |
| */ |
| int |
| bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port, |
| struct device *dev) |
| { |
| int error = 1; |
| |
| mutex_lock(&bfad_mutex); |
| if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) { |
| mutex_unlock(&bfad_mutex); |
| printk(KERN_WARNING "idr_pre_get failure\n"); |
| goto out; |
| } |
| |
| error = idr_get_new(&bfad_im_port_index, im_port, |
| &im_port->idr_id); |
| if (error) { |
| mutex_unlock(&bfad_mutex); |
| printk(KERN_WARNING "idr_get_new failure\n"); |
| goto out; |
| } |
| |
| mutex_unlock(&bfad_mutex); |
| |
| im_port->shost = bfad_os_scsi_host_alloc(im_port, bfad); |
| if (!im_port->shost) { |
| error = 1; |
| goto out_free_idr; |
| } |
| |
| im_port->shost->hostdata[0] = (unsigned long)im_port; |
| im_port->shost->unique_id = im_port->idr_id; |
| im_port->shost->this_id = -1; |
| im_port->shost->max_id = MAX_FCP_TARGET; |
| im_port->shost->max_lun = MAX_FCP_LUN; |
| im_port->shost->max_cmd_len = 16; |
| im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth; |
| if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE) |
| im_port->shost->transportt = bfad_im_scsi_transport_template; |
| else |
| im_port->shost->transportt = |
| bfad_im_scsi_vport_transport_template; |
| |
| error = scsi_add_host(im_port->shost, dev); |
| if (error) { |
| printk(KERN_WARNING "scsi_add_host failure %d\n", error); |
| goto out_fc_rel; |
| } |
| |
| /* setup host fixed attribute if the lk supports */ |
| bfad_os_fc_host_init(im_port); |
| |
| return 0; |
| |
| out_fc_rel: |
| scsi_host_put(im_port->shost); |
| im_port->shost = NULL; |
| out_free_idr: |
| mutex_lock(&bfad_mutex); |
| idr_remove(&bfad_im_port_index, im_port->idr_id); |
| mutex_unlock(&bfad_mutex); |
| out: |
| return error; |
| } |
| |
| void |
| bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port) |
| { |
| bfa_trc(bfad, bfad->inst_no); |
| bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_HOST_FREE, |
| im_port->shost->host_no); |
| |
| fc_remove_host(im_port->shost); |
| |
| scsi_remove_host(im_port->shost); |
| scsi_host_put(im_port->shost); |
| |
| mutex_lock(&bfad_mutex); |
| idr_remove(&bfad_im_port_index, im_port->idr_id); |
| mutex_unlock(&bfad_mutex); |
| } |
| |
| static void |
| bfad_im_port_delete_handler(struct work_struct *work) |
| { |
| struct bfad_im_port_s *im_port = |
| container_of(work, struct bfad_im_port_s, port_delete_work); |
| |
| if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) { |
| im_port->flags |= BFAD_PORT_DELETE; |
| fc_vport_terminate(im_port->fc_vport); |
| } |
| |
| } |
| |
| bfa_status_t |
| bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port) |
| { |
| int rc = BFA_STATUS_OK; |
| struct bfad_im_port_s *im_port; |
| |
| im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC); |
| if (im_port == NULL) { |
| rc = BFA_STATUS_ENOMEM; |
| goto ext; |
| } |
| port->im_port = im_port; |
| im_port->port = port; |
| im_port->bfad = bfad; |
| |
| INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler); |
| INIT_LIST_HEAD(&im_port->itnim_mapped_list); |
| INIT_LIST_HEAD(&im_port->binding_list); |
| |
| ext: |
| return rc; |
| } |
| |
| void |
| bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port) |
| { |
| struct bfad_im_port_s *im_port = port->im_port; |
| |
| queue_work(bfad->im->drv_workq, |
| &im_port->port_delete_work); |
| } |
| |
| void |
| bfad_im_port_clean(struct bfad_im_port_s *im_port) |
| { |
| struct bfad_fcp_binding *bp, *bp_new; |
| unsigned long flags; |
| struct bfad_s *bfad = im_port->bfad; |
| |
| spin_lock_irqsave(&bfad->bfad_lock, flags); |
| list_for_each_entry_safe(bp, bp_new, &im_port->binding_list, |
| list_entry) { |
| list_del(&bp->list_entry); |
| kfree(bp); |
| } |
| |
| /* the itnim_mapped_list must be empty at this time */ |
| bfa_assert(list_empty(&im_port->itnim_mapped_list)); |
| |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| } |
| |
| void |
| bfad_im_port_online(struct bfad_s *bfad, struct bfad_port_s *port) |
| { |
| } |
| |
| void |
| bfad_im_port_offline(struct bfad_s *bfad, struct bfad_port_s *port) |
| { |
| } |
| |
| bfa_status_t |
| bfad_im_probe(struct bfad_s *bfad) |
| { |
| struct bfad_im_s *im; |
| bfa_status_t rc = BFA_STATUS_OK; |
| |
| im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL); |
| if (im == NULL) { |
| rc = BFA_STATUS_ENOMEM; |
| goto ext; |
| } |
| |
| bfad->im = im; |
| im->bfad = bfad; |
| |
| if (bfad_os_thread_workq(bfad) != BFA_STATUS_OK) { |
| kfree(im); |
| rc = BFA_STATUS_FAILED; |
| } |
| |
| ext: |
| return rc; |
| } |
| |
| void |
| bfad_im_probe_undo(struct bfad_s *bfad) |
| { |
| if (bfad->im) { |
| bfad_os_destroy_workq(bfad->im); |
| kfree(bfad->im); |
| bfad->im = NULL; |
| } |
| } |
| |
| struct Scsi_Host * |
| bfad_os_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad) |
| { |
| struct scsi_host_template *sht; |
| |
| if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE) |
| sht = &bfad_im_scsi_host_template; |
| else |
| sht = &bfad_im_vport_template; |
| |
| sht->sg_tablesize = bfad->cfg_data.io_max_sge; |
| |
| return scsi_host_alloc(sht, sizeof(unsigned long)); |
| } |
| |
| void |
| bfad_os_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port) |
| { |
| if (!(im_port->flags & BFAD_PORT_DELETE)) |
| flush_workqueue(bfad->im->drv_workq); |
| bfad_im_scsi_host_free(im_port->bfad, im_port); |
| bfad_im_port_clean(im_port); |
| kfree(im_port); |
| } |
| |
| void |
| bfad_os_destroy_workq(struct bfad_im_s *im) |
| { |
| if (im && im->drv_workq) { |
| destroy_workqueue(im->drv_workq); |
| im->drv_workq = NULL; |
| } |
| } |
| |
| bfa_status_t |
| bfad_os_thread_workq(struct bfad_s *bfad) |
| { |
| struct bfad_im_s *im = bfad->im; |
| |
| bfa_trc(bfad, 0); |
| snprintf(im->drv_workq_name, BFAD_KOBJ_NAME_LEN, "bfad_wq_%d", |
| bfad->inst_no); |
| im->drv_workq = create_singlethread_workqueue(im->drv_workq_name); |
| if (!im->drv_workq) |
| return BFA_STATUS_FAILED; |
| |
| return BFA_STATUS_OK; |
| } |
| |
| /** |
| * Scsi_Host template entry. |
| * |
| * Description: |
| * OS entry point to adjust the queue_depths on a per-device basis. |
| * Called once per device during the bus scan. |
| * Return non-zero if fails. |
| */ |
| static int |
| bfad_im_slave_configure(struct scsi_device *sdev) |
| { |
| if (sdev->tagged_supported) |
| scsi_activate_tcq(sdev, bfa_lun_queue_depth); |
| else |
| scsi_deactivate_tcq(sdev, bfa_lun_queue_depth); |
| |
| return 0; |
| } |
| |
| struct scsi_host_template bfad_im_scsi_host_template = { |
| .module = THIS_MODULE, |
| .name = BFAD_DRIVER_NAME, |
| .info = bfad_im_info, |
| .queuecommand = bfad_im_queuecommand, |
| .eh_abort_handler = bfad_im_abort_handler, |
| .eh_device_reset_handler = bfad_im_reset_lun_handler, |
| .eh_bus_reset_handler = bfad_im_reset_bus_handler, |
| |
| .slave_alloc = bfad_im_slave_alloc, |
| .slave_configure = bfad_im_slave_configure, |
| .slave_destroy = bfad_im_slave_destroy, |
| |
| .this_id = -1, |
| .sg_tablesize = BFAD_IO_MAX_SGE, |
| .cmd_per_lun = 3, |
| .use_clustering = ENABLE_CLUSTERING, |
| .shost_attrs = bfad_im_host_attrs, |
| .max_sectors = 0xFFFF, |
| }; |
| |
| struct scsi_host_template bfad_im_vport_template = { |
| .module = THIS_MODULE, |
| .name = BFAD_DRIVER_NAME, |
| .info = bfad_im_info, |
| .queuecommand = bfad_im_queuecommand, |
| .eh_abort_handler = bfad_im_abort_handler, |
| .eh_device_reset_handler = bfad_im_reset_lun_handler, |
| .eh_bus_reset_handler = bfad_im_reset_bus_handler, |
| |
| .slave_alloc = bfad_im_slave_alloc, |
| .slave_configure = bfad_im_slave_configure, |
| .slave_destroy = bfad_im_slave_destroy, |
| |
| .this_id = -1, |
| .sg_tablesize = BFAD_IO_MAX_SGE, |
| .cmd_per_lun = 3, |
| .use_clustering = ENABLE_CLUSTERING, |
| .shost_attrs = bfad_im_vport_attrs, |
| .max_sectors = 0xFFFF, |
| }; |
| |
| void |
| bfad_im_probe_post(struct bfad_im_s *im) |
| { |
| flush_workqueue(im->drv_workq); |
| } |
| |
| bfa_status_t |
| bfad_im_module_init(void) |
| { |
| bfad_im_scsi_transport_template = |
| fc_attach_transport(&bfad_im_fc_function_template); |
| if (!bfad_im_scsi_transport_template) |
| return BFA_STATUS_ENOMEM; |
| |
| bfad_im_scsi_vport_transport_template = |
| fc_attach_transport(&bfad_im_vport_fc_function_template); |
| if (!bfad_im_scsi_vport_transport_template) { |
| fc_release_transport(bfad_im_scsi_transport_template); |
| return BFA_STATUS_ENOMEM; |
| } |
| |
| return BFA_STATUS_OK; |
| } |
| |
| void |
| bfad_im_module_exit(void) |
| { |
| if (bfad_im_scsi_transport_template) |
| fc_release_transport(bfad_im_scsi_transport_template); |
| if (bfad_im_scsi_vport_transport_template) |
| fc_release_transport(bfad_im_scsi_vport_transport_template); |
| } |
| |
| void |
| bfad_os_itnim_process(struct bfad_itnim_s *itnim_drv) |
| { |
| struct bfad_im_s *im = itnim_drv->im; |
| |
| if (itnim_drv->queue_work) |
| queue_work(im->drv_workq, &itnim_drv->itnim_work); |
| } |
| |
| void |
| bfad_os_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev) |
| { |
| struct scsi_device *tmp_sdev; |
| |
| if (((jiffies - itnim->last_ramp_up_time) > |
| BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) && |
| ((jiffies - itnim->last_queue_full_time) > |
| BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) { |
| shost_for_each_device(tmp_sdev, sdev->host) { |
| if (bfa_lun_queue_depth > tmp_sdev->queue_depth) { |
| if (tmp_sdev->id != sdev->id) |
| continue; |
| if (tmp_sdev->ordered_tags) |
| scsi_adjust_queue_depth(tmp_sdev, |
| MSG_ORDERED_TAG, |
| tmp_sdev->queue_depth + 1); |
| else |
| scsi_adjust_queue_depth(tmp_sdev, |
| MSG_SIMPLE_TAG, |
| tmp_sdev->queue_depth + 1); |
| |
| itnim->last_ramp_up_time = jiffies; |
| } |
| } |
| } |
| } |
| |
| void |
| bfad_os_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev) |
| { |
| struct scsi_device *tmp_sdev; |
| |
| itnim->last_queue_full_time = jiffies; |
| |
| shost_for_each_device(tmp_sdev, sdev->host) { |
| if (tmp_sdev->id != sdev->id) |
| continue; |
| scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1); |
| } |
| } |
| |
| |
| |
| |
| struct bfad_itnim_s * |
| bfad_os_get_itnim(struct bfad_im_port_s *im_port, int id) |
| { |
| struct bfad_itnim_s *itnim = NULL; |
| |
| /* Search the mapped list for this target ID */ |
| list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) { |
| if (id == itnim->scsi_tgt_id) |
| return itnim; |
| } |
| |
| return NULL; |
| } |
| |
| /** |
| * Scsi_Host template entry slave_alloc |
| */ |
| static int |
| bfad_im_slave_alloc(struct scsi_device *sdev) |
| { |
| struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
| |
| if (!rport || fc_remote_port_chkready(rport)) |
| return -ENXIO; |
| |
| sdev->hostdata = rport->dd_data; |
| |
| return 0; |
| } |
| |
| void |
| bfad_os_fc_host_init(struct bfad_im_port_s *im_port) |
| { |
| struct Scsi_Host *host = im_port->shost; |
| struct bfad_s *bfad = im_port->bfad; |
| struct bfad_port_s *port = im_port->port; |
| struct bfa_pport_attr_s pattr; |
| char model[BFA_ADAPTER_MODEL_NAME_LEN]; |
| char fw_ver[BFA_VERSION_LEN]; |
| |
| fc_host_node_name(host) = |
| bfa_os_htonll((bfa_fcs_port_get_nwwn(port->fcs_port))); |
| fc_host_port_name(host) = |
| bfa_os_htonll((bfa_fcs_port_get_pwwn(port->fcs_port))); |
| fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa); |
| |
| fc_host_supported_classes(host) = FC_COS_CLASS3; |
| |
| memset(fc_host_supported_fc4s(host), 0, |
| sizeof(fc_host_supported_fc4s(host))); |
| if (bfad_supported_fc4s & (BFA_PORT_ROLE_FCP_IM | BFA_PORT_ROLE_FCP_TM)) |
| /* For FCP type 0x08 */ |
| fc_host_supported_fc4s(host)[2] = 1; |
| if (bfad_supported_fc4s & BFA_PORT_ROLE_FCP_IPFC) |
| /* For LLC/SNAP type 0x05 */ |
| fc_host_supported_fc4s(host)[3] = 0x20; |
| /* For fibre channel services type 0x20 */ |
| fc_host_supported_fc4s(host)[7] = 1; |
| |
| bfa_get_adapter_model(&bfad->bfa, model); |
| bfa_get_adapter_fw_ver(&bfad->bfa, fw_ver); |
| sprintf(fc_host_symbolic_name(host), "Brocade %s FV%s DV%s", |
| model, fw_ver, BFAD_DRIVER_VERSION); |
| |
| fc_host_supported_speeds(host) = 0; |
| fc_host_supported_speeds(host) |= |
| FC_PORTSPEED_8GBIT | FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT | |
| FC_PORTSPEED_1GBIT; |
| |
| bfa_fcport_get_attr(&bfad->bfa, &pattr); |
| fc_host_maxframe_size(host) = pattr.pport_cfg.maxfrsize; |
| } |
| |
| static void |
| bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim) |
| { |
| struct fc_rport_identifiers rport_ids; |
| struct fc_rport *fc_rport; |
| struct bfad_itnim_data_s *itnim_data; |
| |
| rport_ids.node_name = |
| bfa_os_htonll(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim)); |
| rport_ids.port_name = |
| bfa_os_htonll(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim)); |
| rport_ids.port_id = |
| bfa_os_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim)); |
| rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; |
| |
| itnim->fc_rport = fc_rport = |
| fc_remote_port_add(im_port->shost, 0, &rport_ids); |
| |
| if (!fc_rport) |
| return; |
| |
| fc_rport->maxframe_size = |
| bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim); |
| fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim); |
| |
| itnim_data = fc_rport->dd_data; |
| itnim_data->itnim = itnim; |
| |
| rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; |
| |
| if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) |
| fc_remote_port_rolechg(fc_rport, rport_ids.roles); |
| |
| if ((fc_rport->scsi_target_id != -1) |
| && (fc_rport->scsi_target_id < MAX_FCP_TARGET)) |
| itnim->scsi_tgt_id = fc_rport->scsi_target_id; |
| |
| return; |
| } |
| |
| /** |
| * Work queue handler using FC transport service |
| * Context: kernel |
| */ |
| static void |
| bfad_im_itnim_work_handler(struct work_struct *work) |
| { |
| struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s, |
| itnim_work); |
| struct bfad_im_s *im = itnim->im; |
| struct bfad_s *bfad = im->bfad; |
| struct bfad_im_port_s *im_port; |
| unsigned long flags; |
| struct fc_rport *fc_rport; |
| wwn_t wwpn; |
| u32 fcid; |
| char wwpn_str[32], fcid_str[16]; |
| |
| spin_lock_irqsave(&bfad->bfad_lock, flags); |
| im_port = itnim->im_port; |
| bfa_trc(bfad, itnim->state); |
| switch (itnim->state) { |
| case ITNIM_STATE_ONLINE: |
| if (!itnim->fc_rport) { |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| bfad_im_fc_rport_add(im_port, itnim); |
| spin_lock_irqsave(&bfad->bfad_lock, flags); |
| wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim); |
| fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim); |
| wwn2str(wwpn_str, wwpn); |
| fcid2str(fcid_str, fcid); |
| list_add_tail(&itnim->list_entry, |
| &im_port->itnim_mapped_list); |
| bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_ONLINE, |
| im_port->shost->host_no, |
| itnim->scsi_tgt_id, |
| fcid_str, wwpn_str); |
| } else { |
| printk(KERN_WARNING |
| "%s: itnim %llx is already in online state\n", |
| __func__, |
| bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim)); |
| } |
| |
| break; |
| case ITNIM_STATE_OFFLINE_PENDING: |
| itnim->state = ITNIM_STATE_OFFLINE; |
| if (itnim->fc_rport) { |
| fc_rport = itnim->fc_rport; |
| ((struct bfad_itnim_data_s *) |
| fc_rport->dd_data)->itnim = NULL; |
| itnim->fc_rport = NULL; |
| if (!(im_port->port->flags & BFAD_PORT_DELETE)) { |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| fc_rport->dev_loss_tmo = |
| bfa_fcpim_path_tov_get(&bfad->bfa) + 1; |
| fc_remote_port_delete(fc_rport); |
| spin_lock_irqsave(&bfad->bfad_lock, flags); |
| } |
| wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim); |
| fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim); |
| wwn2str(wwpn_str, wwpn); |
| fcid2str(fcid_str, fcid); |
| list_del(&itnim->list_entry); |
| bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_OFFLINE, |
| im_port->shost->host_no, |
| itnim->scsi_tgt_id, |
| fcid_str, wwpn_str); |
| } |
| break; |
| case ITNIM_STATE_FREE: |
| if (itnim->fc_rport) { |
| fc_rport = itnim->fc_rport; |
| ((struct bfad_itnim_data_s *) |
| fc_rport->dd_data)->itnim = NULL; |
| itnim->fc_rport = NULL; |
| if (!(im_port->port->flags & BFAD_PORT_DELETE)) { |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| fc_rport->dev_loss_tmo = |
| bfa_fcpim_path_tov_get(&bfad->bfa) + 1; |
| fc_remote_port_delete(fc_rport); |
| spin_lock_irqsave(&bfad->bfad_lock, flags); |
| } |
| list_del(&itnim->list_entry); |
| } |
| |
| kfree(itnim); |
| break; |
| default: |
| bfa_assert(0); |
| break; |
| } |
| |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| } |
| |
| /** |
| * Scsi_Host template entry, queue a SCSI command to the BFAD. |
| */ |
| static int |
| bfad_im_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) |
| { |
| struct bfad_im_port_s *im_port = |
| (struct bfad_im_port_s *) cmnd->device->host->hostdata[0]; |
| struct bfad_s *bfad = im_port->bfad; |
| struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata; |
| struct bfad_itnim_s *itnim; |
| struct bfa_ioim_s *hal_io; |
| unsigned long flags; |
| int rc; |
| s16 sg_cnt = 0; |
| struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
| |
| rc = fc_remote_port_chkready(rport); |
| if (rc) { |
| cmnd->result = rc; |
| done(cmnd); |
| return 0; |
| } |
| |
| sg_cnt = scsi_dma_map(cmnd); |
| |
| if (sg_cnt < 0) |
| return SCSI_MLQUEUE_HOST_BUSY; |
| |
| cmnd->scsi_done = done; |
| |
| spin_lock_irqsave(&bfad->bfad_lock, flags); |
| if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) { |
| printk(KERN_WARNING |
| "bfad%d, queuecommand %p %x failed, BFA stopped\n", |
| bfad->inst_no, cmnd, cmnd->cmnd[0]); |
| cmnd->result = ScsiResult(DID_NO_CONNECT, 0); |
| goto out_fail_cmd; |
| } |
| |
| itnim = itnim_data->itnim; |
| if (!itnim) { |
| cmnd->result = ScsiResult(DID_IMM_RETRY, 0); |
| goto out_fail_cmd; |
| } |
| |
| hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd, |
| itnim->bfa_itnim, sg_cnt); |
| if (!hal_io) { |
| printk(KERN_WARNING "hal_io failure\n"); |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| scsi_dma_unmap(cmnd); |
| return SCSI_MLQUEUE_HOST_BUSY; |
| } |
| |
| cmnd->host_scribble = (char *)hal_io; |
| bfa_trc_fp(bfad, hal_io->iotag); |
| bfa_ioim_start(hal_io); |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| |
| return 0; |
| |
| out_fail_cmd: |
| spin_unlock_irqrestore(&bfad->bfad_lock, flags); |
| scsi_dma_unmap(cmnd); |
| if (done) |
| done(cmnd); |
| |
| return 0; |
| } |
| |
| void |
| bfad_os_rport_online_wait(struct bfad_s *bfad) |
| { |
| int i; |
| int rport_delay = 10; |
| |
| for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE) |
| && i < bfa_linkup_delay; i++) |
| schedule_timeout_uninterruptible(HZ); |
| |
| if (bfad->bfad_flags & BFAD_PORT_ONLINE) { |
| rport_delay = rport_delay < bfa_linkup_delay ? |
| rport_delay : bfa_linkup_delay; |
| for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE) |
| && i < rport_delay; i++) |
| schedule_timeout_uninterruptible(HZ); |
| |
| if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) |
| schedule_timeout_uninterruptible(rport_delay * HZ); |
| } |
| } |
| |
| int |
| bfad_os_get_linkup_delay(struct bfad_s *bfad) |
| { |
| |
| u8 nwwns = 0; |
| wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX]; |
| int ldelay; |
| |
| /* |
| * Querying for the boot target port wwns |
| * -- read from boot information in flash. |
| * If nwwns > 0 => boot over SAN and set bfa_linkup_delay = 30 |
| * else => local boot machine set bfa_linkup_delay = 10 |
| */ |
| |
| bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns); |
| |
| if (nwwns > 0) { |
| /* If boot over SAN; linkup_delay = 30sec */ |
| ldelay = 30; |
| } else { |
| /* If local boot; linkup_delay = 10sec */ |
| ldelay = 0; |
| } |
| |
| return ldelay; |
| } |
| |
| |