[SCSI] bfa: Brocade BFA FC SCSI driver
Add new driver for Brocade Hardware
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/bfa/bfad_im.c b/drivers/scsi/bfa/bfad_im.c
new file mode 100644
index 0000000..158c992
--- /dev/null
+++ b/drivers/scsi/bfa/bfad_im.c
@@ -0,0 +1,1230 @@
+/*
+ * 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",
+ __FUNCTION__,
+ 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;
+}
+
+