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- /*
- * 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 "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;
- 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;
- switch (io_status) {
- case BFI_IOIM_STS_OK:
- bfa_trc(bfad, scsi_status);
- cmnd->result = ScsiResult(DID_OK, 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)
- scsi_set_resid(cmnd, residue);
- 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 bfa_ioc_attr_s ioc_attr;
- struct bfad_s *bfad = im_port->bfad;
- memset(&ioc_attr, 0, sizeof(ioc_attr));
- bfa_get_attr(&bfad->bfa, &ioc_attr);
- memset(bfa_buf, 0, sizeof(bfa_buf));
- snprintf(bfa_buf, sizeof(bfa_buf),
- "Brocade FC/FCOE Adapter, " "model: %s hwpath: %s driver: %s",
- ioc_attr.adapter_attr.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;
- bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
- 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;
- }
- /**
- * Path TOV processing begin notification -- dummy for linux
- */
- void
- bfa_fcb_itnim_tov_begin(struct bfad_itnim_s *itnim)
- {
- }
- /**
- * Allocate a Scsi_Host for a port.
- */
- int
- bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
- {
- int error = 1;
- if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
- 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) {
- printk(KERN_WARNING "idr_get_new failure\n");
- goto out;
- }
- 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;
- im_port->shost->transportt = bfad_im_scsi_transport_template;
- error = bfad_os_scsi_add_host(im_port->shost, im_port, bfad);
- if (error) {
- printk(KERN_WARNING "bfad_os_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);
- out_free_idr:
- idr_remove(&bfad_im_port_index, im_port->idr_id);
- out:
- return error;
- }
- void
- bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
- {
- unsigned long flags;
- 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);
- spin_lock_irqsave(&bfad->bfad_lock, flags);
- idr_remove(&bfad_im_port_index, im_port->idr_id);
- spin_unlock_irqrestore(&bfad->bfad_lock, flags);
- }
- 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);
- bfad_im_scsi_host_free(im_port->bfad, im_port);
- bfad_im_port_clean(im_port);
- kfree(im_port);
- }
- 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;
- }
- }
- int
- bfad_os_scsi_add_host(struct Scsi_Host *shost, struct bfad_im_port_s *im_port,
- struct bfad_s *bfad)
- {
- struct device *dev;
- if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
- dev = &bfad->pcidev->dev;
- else
- dev = &bfad->pport.im_port->shost->shost_gendev;
- return scsi_add_host(shost, dev);
- }
- 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)
- {
- 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;
- return BFA_STATUS_OK;
- }
- void
- bfad_im_module_exit(void)
- {
- if (bfad_im_scsi_transport_template)
- fc_release_transport(bfad_im_scsi_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;
- union attr {
- struct bfa_pport_attr_s pattr;
- struct bfa_ioc_attr_s ioc_attr;
- } attr;
- 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_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;
- memset(&attr.ioc_attr, 0, sizeof(attr.ioc_attr));
- bfa_get_attr(&bfad->bfa, &attr.ioc_attr);
- sprintf(fc_host_symbolic_name(host), "Brocade %s FV%s DV%s",
- attr.ioc_attr.adapter_attr.model,
- attr.ioc_attr.adapter_attr.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;
- memset(&attr.pattr, 0, sizeof(attr.pattr));
- bfa_pport_get_attr(&bfad->bfa, &attr.pattr);
- fc_host_maxframe_size(host) = attr.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;
- 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;
- }
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