#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/kthread.h>
+#include <linux/slab.h>
#include <linux/of.h>
+#include <linux/pm.h>
#include <linux/stringify.h>
#include <asm/firmware.h>
#include <asm/irq.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_fc.h>
+#include <scsi/scsi_bsg_fc.h>
#include "ibmvfc.h"
static unsigned int init_timeout = IBMVFC_INIT_TIMEOUT;
module_param_named(max_targets, max_targets, uint, S_IRUGO);
MODULE_PARM_DESC(max_targets, "Maximum allowed targets. "
"[Default=" __stringify(IBMVFC_MAX_TARGETS) "]");
-module_param_named(disc_threads, disc_threads, uint, S_IRUGO | S_IWUSR);
+module_param_named(disc_threads, disc_threads, uint, S_IRUGO);
MODULE_PARM_DESC(disc_threads, "Number of device discovery threads to use. "
"[Default=" __stringify(IBMVFC_MAX_DISC_THREADS) "]");
module_param_named(debug, ibmvfc_debug, uint, S_IRUGO | S_IWUSR);
{ IBMVFC_FABRIC_MAPPED, IBMVFC_UNABLE_TO_ESTABLISH, DID_ERROR, 1, 1, "unable to establish" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_FAULT, DID_OK, 1, 0, "transport fault" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_CMD_TIMEOUT, DID_TIME_OUT, 1, 1, "command timeout" },
- { IBMVFC_FABRIC_MAPPED, IBMVFC_ENETDOWN, DID_NO_CONNECT, 1, 1, "network down" },
+ { IBMVFC_FABRIC_MAPPED, IBMVFC_ENETDOWN, DID_TRANSPORT_DISRUPTED, 1, 1, "network down" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_HW_FAILURE, DID_ERROR, 1, 1, "hardware failure" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DOWN_ERR, DID_REQUEUE, 0, 0, "link down" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DEAD_ERR, DID_ERROR, 0, 0, "link dead" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_DEAD, DID_ERROR, 0, 1, "transport dead" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_CONFIG_ERROR, DID_ERROR, 1, 1, "configuration error" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_NAME_SERVER_FAIL, DID_ERROR, 1, 1, "name server failure" },
- { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_HALTED, DID_REQUEUE, 0, 0, "link halted" },
+ { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_HALTED, DID_REQUEUE, 1, 0, "link halted" },
{ IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_GENERAL, DID_OK, 1, 0, "general transport error" },
{ IBMVFC_VIOS_FAILURE, IBMVFC_CRQ_FAILURE, DID_REQUEUE, 1, 1, "CRQ failure" },
{ IBMVFC_VIOS_FAILURE, IBMVFC_SW_FAILURE, DID_ERROR, 0, 1, "software failure" },
- { IBMVFC_VIOS_FAILURE, IBMVFC_INVALID_PARAMETER, DID_ABORT, 0, 1, "invalid parameter" },
- { IBMVFC_VIOS_FAILURE, IBMVFC_MISSING_PARAMETER, DID_ABORT, 0, 1, "missing parameter" },
+ { IBMVFC_VIOS_FAILURE, IBMVFC_INVALID_PARAMETER, DID_ERROR, 0, 1, "invalid parameter" },
+ { IBMVFC_VIOS_FAILURE, IBMVFC_MISSING_PARAMETER, DID_ERROR, 0, 1, "missing parameter" },
{ IBMVFC_VIOS_FAILURE, IBMVFC_HOST_IO_BUS, DID_ERROR, 1, 1, "host I/O bus failure" },
- { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED, DID_ABORT, 0, 1, "transaction cancelled" },
- { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED_IMPLICIT, DID_ABORT, 0, 1, "transaction cancelled implicit" },
+ { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED, DID_ERROR, 0, 1, "transaction cancelled" },
+ { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED_IMPLICIT, DID_ERROR, 0, 1, "transaction cancelled implicit" },
{ IBMVFC_VIOS_FAILURE, IBMVFC_INSUFFICIENT_RESOURCE, DID_REQUEUE, 1, 1, "insufficient resources" },
+ { IBMVFC_VIOS_FAILURE, IBMVFC_PLOGI_REQUIRED, DID_ERROR, 0, 1, "port login required" },
{ IBMVFC_VIOS_FAILURE, IBMVFC_COMMAND_FAILED, DID_ERROR, 1, 1, "command failed" },
{ IBMVFC_FC_FAILURE, IBMVFC_INVALID_ELS_CMD_CODE, DID_ERROR, 0, 1, "invalid ELS command code" },
static void ibmvfc_tgt_send_prli(struct ibmvfc_target *);
static void ibmvfc_tgt_send_plogi(struct ibmvfc_target *);
static void ibmvfc_tgt_query_target(struct ibmvfc_target *);
+static void ibmvfc_npiv_logout(struct ibmvfc_host *);
static const char *unknown_error = "unknown error";
int fc_rsp_len = rsp->fcp_rsp_len;
if ((rsp->flags & FCP_RSP_LEN_VALID) &&
- ((!fc_rsp_len && fc_rsp_len != 4 && fc_rsp_len != 8) ||
+ ((fc_rsp_len && fc_rsp_len != 4 && fc_rsp_len != 8) ||
rsp->data.info.rsp_code))
return DID_ERROR << 16;
- if (!vfc_cmd->status) {
- if (rsp->flags & FCP_RESID_OVER)
- return rsp->scsi_status | (DID_ERROR << 16);
- else
- return rsp->scsi_status | (DID_OK << 16);
- }
-
err = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error);
if (err >= 0)
return rsp->scsi_status | (cmd_status[err].result << 16);
case IBMVFC_TGT_ACTION_DEL_RPORT:
break;
default:
+ if (action == IBMVFC_TGT_ACTION_DEL_RPORT)
+ tgt->add_rport = 0;
tgt->action = action;
break;
}
if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT)
vhost->action = action;
break;
+ case IBMVFC_HOST_ACTION_LOGO_WAIT:
+ if (vhost->action == IBMVFC_HOST_ACTION_LOGO)
+ vhost->action = action;
+ break;
case IBMVFC_HOST_ACTION_INIT_WAIT:
if (vhost->action == IBMVFC_HOST_ACTION_INIT)
vhost->action = action;
switch (vhost->action) {
case IBMVFC_HOST_ACTION_INIT_WAIT:
case IBMVFC_HOST_ACTION_NONE:
- case IBMVFC_HOST_ACTION_TGT_ADD:
+ case IBMVFC_HOST_ACTION_TGT_DEL_FAILED:
vhost->action = action;
break;
default:
if (vhost->action == IBMVFC_HOST_ACTION_ALLOC_TGTS)
vhost->action = action;
break;
+ case IBMVFC_HOST_ACTION_LOGO:
case IBMVFC_HOST_ACTION_INIT:
case IBMVFC_HOST_ACTION_TGT_DEL:
case IBMVFC_HOST_ACTION_QUERY_TGTS:
- case IBMVFC_HOST_ACTION_TGT_ADD:
+ case IBMVFC_HOST_ACTION_TGT_DEL_FAILED:
case IBMVFC_HOST_ACTION_NONE:
default:
vhost->action = action;
static void ibmvfc_reinit_host(struct ibmvfc_host *vhost)
{
if (vhost->action == IBMVFC_HOST_ACTION_NONE) {
- scsi_block_requests(vhost->host);
- ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING);
- ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY);
+ if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) {
+ scsi_block_requests(vhost->host);
+ ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY);
+ }
} else
vhost->reinit = 1;
struct ibmvfc_target *tgt;
if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) {
- if (++vhost->init_retries > IBMVFC_MAX_INIT_RETRIES) {
+ if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) {
dev_err(vhost->dev,
"Host initialization retries exceeded. Taking adapter offline\n");
ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE);
}
if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) {
+ memset(vhost->async_crq.msgs, 0, PAGE_SIZE);
+ vhost->async_crq.cur = 0;
+
list_for_each_entry(tgt, &vhost->targets, queue)
- tgt->need_login = 1;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
scsi_block_requests(vhost->host);
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT);
vhost->job_step = ibmvfc_npiv_login;
ibmvfc_dbg(vhost, "Releasing CRQ\n");
free_irq(vdev->irq, vhost);
+ tasklet_kill(&vhost->tasklet);
do {
rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
vhost->state = IBMVFC_NO_CRQ;
+ vhost->logged_in = 0;
dma_unmap_single(vhost->dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
free_page((unsigned long)crq->msgs);
}
} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
vhost->state = IBMVFC_NO_CRQ;
+ vhost->logged_in = 0;
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
/* Clean out the queue */
cmnd->scsi_done(cmnd);
}
+ if (evt->eh_comp)
+ complete(evt->eh_comp);
+
ibmvfc_free_event(evt);
}
}
/**
- * __ibmvfc_reset_host - Reset the connection to the server (no locking)
+ * ibmvfc_hard_reset_host - Reset the connection to the server by breaking the CRQ
* @vhost: struct ibmvfc host to reset
**/
-static void __ibmvfc_reset_host(struct ibmvfc_host *vhost)
+static void ibmvfc_hard_reset_host(struct ibmvfc_host *vhost)
{
int rc;
}
/**
- * ibmvfc_reset_host - Reset the connection to the server
+ * __ibmvfc_reset_host - Reset the connection to the server (no locking)
* @vhost: struct ibmvfc host to reset
**/
+static void __ibmvfc_reset_host(struct ibmvfc_host *vhost)
+{
+ if (vhost->logged_in && vhost->action != IBMVFC_HOST_ACTION_LOGO_WAIT &&
+ !ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) {
+ scsi_block_requests(vhost->host);
+ ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO);
+ vhost->job_step = ibmvfc_npiv_logout;
+ wake_up(&vhost->work_wait_q);
+ } else
+ ibmvfc_hard_reset_host(vhost);
+}
+
+/**
+ * ibmvfc_reset_host - Reset the connection to the server
+ * @vhost: ibmvfc host struct
+ **/
static void ibmvfc_reset_host(struct ibmvfc_host *vhost)
{
unsigned long flags;
* ibmvfc_retry_host_init - Retry host initialization if allowed
* @vhost: ibmvfc host struct
*
+ * Returns: 1 if init will be retried / 0 if not
+ *
**/
-static void ibmvfc_retry_host_init(struct ibmvfc_host *vhost)
+static int ibmvfc_retry_host_init(struct ibmvfc_host *vhost)
{
+ int retry = 0;
+
if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) {
- if (++vhost->init_retries > IBMVFC_MAX_INIT_RETRIES) {
+ vhost->delay_init = 1;
+ if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) {
dev_err(vhost->dev,
"Host initialization retries exceeded. Taking adapter offline\n");
ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE);
- } else if (vhost->init_retries == IBMVFC_MAX_INIT_RETRIES)
+ } else if (vhost->init_retries == IBMVFC_MAX_HOST_INIT_RETRIES)
__ibmvfc_reset_host(vhost);
- else
+ else {
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT);
+ retry = 1;
+ }
}
wake_up(&vhost->work_wait_q);
+ return retry;
}
/**
fc_host_speed(shost) = FC_PORTSPEED_16GBIT;
break;
default:
- ibmvfc_log(vhost, 3, "Unknown port speed: %ld Gbit\n",
+ ibmvfc_log(vhost, 3, "Unknown port speed: %lld Gbit\n",
vhost->login_buf->resp.link_speed / 100);
fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
break;
static int ibmvfc_wait_while_resetting(struct ibmvfc_host *vhost)
{
long timeout = wait_event_timeout(vhost->init_wait_q,
- (vhost->state == IBMVFC_ACTIVE ||
- vhost->state == IBMVFC_HOST_OFFLINE ||
- vhost->state == IBMVFC_LINK_DEAD),
+ ((vhost->state == IBMVFC_ACTIVE ||
+ vhost->state == IBMVFC_HOST_OFFLINE ||
+ vhost->state == IBMVFC_LINK_DEAD) &&
+ vhost->action == IBMVFC_HOST_ACTION_NONE),
(init_timeout * HZ));
return timeout ? 0 : -EIO;
static void ibmvfc_set_login_info(struct ibmvfc_host *vhost)
{
struct ibmvfc_npiv_login *login_info = &vhost->login_info;
- struct device_node *of_node = vhost->dev->archdata.of_node;
+ struct device_node *of_node = vhost->dev->of_node;
const char *location;
memset(login_info, 0, sizeof(*login_info));
login_info->partition_num = vhost->partition_number;
login_info->vfc_frame_version = 1;
login_info->fcp_version = 3;
+ login_info->flags = IBMVFC_FLUSH_ON_HALT;
if (vhost->client_migrated)
- login_info->flags = IBMVFC_CLIENT_MIGRATED;
+ login_info->flags |= IBMVFC_CLIENT_MIGRATED;
login_info->max_cmds = max_requests + IBMVFC_NUM_INTERNAL_REQ;
login_info->capabilities = IBMVFC_CAN_MIGRATE;
login_info->async.va = vhost->async_crq.msg_token;
- login_info->async.len = vhost->async_crq.size;
+ login_info->async.len = vhost->async_crq.size * sizeof(*vhost->async_crq.msgs);
strncpy(login_info->partition_name, vhost->partition_name, IBMVFC_MAX_NAME);
strncpy(login_info->device_name,
- vhost->host->shost_gendev.bus_id, IBMVFC_MAX_NAME);
+ dev_name(&vhost->host->shost_gendev), IBMVFC_MAX_NAME);
location = of_get_property(of_node, "ibm,loc-code", NULL);
- location = location ? location : vhost->dev->bus_id;
+ location = location ? location : dev_name(vhost->dev);
strncpy(login_info->drc_name, location, IBMVFC_MAX_NAME);
}
evt->sync_iu = NULL;
evt->crq.format = format;
evt->done = done;
+ evt->eh_comp = NULL;
}
/**
&evt->ext_list_token);
if (!evt->ext_list) {
- scmd_printk(KERN_ERR, scmd, "Can't allocate memory for scatterlist\n");
+ scsi_dma_unmap(scmd);
+ if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL)
+ scmd_printk(KERN_ERR, scmd, "Can't allocate memory for scatterlist\n");
return -ENOMEM;
}
}
add_timer(&evt->timer);
}
+ mb();
+
if ((rc = ibmvfc_send_crq(vhost, crq_as_u64[0], crq_as_u64[1]))) {
list_del(&evt->queue);
del_timer(&evt->timer);
}
/**
+ * ibmvfc_relogin - Log back into the specified device
+ * @sdev: scsi device struct
+ *
+ **/
+static void ibmvfc_relogin(struct scsi_device *sdev)
+{
+ struct ibmvfc_host *vhost = shost_priv(sdev->host);
+ struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
+ struct ibmvfc_target *tgt;
+
+ list_for_each_entry(tgt, &vhost->targets, queue) {
+ if (rport == tgt->rport) {
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+ break;
+ }
+ }
+
+ ibmvfc_reinit_host(vhost);
+}
+
+/**
* ibmvfc_scsi_done - Handle responses from commands
* @evt: ibmvfc event to be handled
*
struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd;
struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp;
struct scsi_cmnd *cmnd = evt->cmnd;
- int rsp_len = 0;
- int sense_len = rsp->fcp_sense_len;
+ u32 rsp_len = 0;
+ u32 sense_len = rsp->fcp_sense_len;
if (cmnd) {
if (vfc_cmd->response_flags & IBMVFC_ADAPTER_RESID_VALID)
rsp_len = rsp->fcp_rsp_len;
if ((sense_len + rsp_len) > SCSI_SENSE_BUFFERSIZE)
sense_len = SCSI_SENSE_BUFFERSIZE - rsp_len;
- if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len)
+ if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len && rsp_len <= 8)
memcpy(cmnd->sense_buffer, rsp->data.sense + rsp_len, sense_len);
+ if ((vfc_cmd->status & IBMVFC_VIOS_FAILURE) && (vfc_cmd->error == IBMVFC_PLOGI_REQUIRED))
+ ibmvfc_relogin(cmnd->device);
+
+ if (!cmnd->result && (!scsi_get_resid(cmnd) || (rsp->flags & FCP_RESID_OVER)))
+ cmnd->result = (DID_ERROR << 16);
ibmvfc_log_error(evt);
}
cmnd->scsi_done(cmnd);
}
+ if (evt->eh_comp)
+ complete(evt->eh_comp);
+
ibmvfc_free_event(evt);
}
vfc_cmd->resp_len = sizeof(vfc_cmd->rsp);
vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata;
vfc_cmd->tgt_scsi_id = rport->port_id;
- if ((rport->supported_classes & FC_COS_CLASS3) &&
- (fc_host_supported_classes(vhost->host) & FC_COS_CLASS3))
- vfc_cmd->flags = IBMVFC_CLASS_3_ERR;
vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd);
int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun);
memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len);
}
/**
+ * ibmvfc_bsg_timeout_done - Completion handler for cancelling BSG commands
+ * @evt: struct ibmvfc_event
+ *
+ **/
+static void ibmvfc_bsg_timeout_done(struct ibmvfc_event *evt)
+{
+ struct ibmvfc_host *vhost = evt->vhost;
+
+ ibmvfc_free_event(evt);
+ vhost->aborting_passthru = 0;
+ dev_info(vhost->dev, "Passthru command cancelled\n");
+}
+
+/**
+ * ibmvfc_bsg_timeout - Handle a BSG timeout
+ * @job: struct fc_bsg_job that timed out
+ *
+ * Returns:
+ * 0 on success / other on failure
+ **/
+static int ibmvfc_bsg_timeout(struct fc_bsg_job *job)
+{
+ struct ibmvfc_host *vhost = shost_priv(job->shost);
+ unsigned long port_id = (unsigned long)job->dd_data;
+ struct ibmvfc_event *evt;
+ struct ibmvfc_tmf *tmf;
+ unsigned long flags;
+ int rc;
+
+ ENTER;
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ if (vhost->aborting_passthru || vhost->state != IBMVFC_ACTIVE) {
+ __ibmvfc_reset_host(vhost);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ return 0;
+ }
+
+ vhost->aborting_passthru = 1;
+ evt = ibmvfc_get_event(vhost);
+ ibmvfc_init_event(evt, ibmvfc_bsg_timeout_done, IBMVFC_MAD_FORMAT);
+
+ tmf = &evt->iu.tmf;
+ memset(tmf, 0, sizeof(*tmf));
+ tmf->common.version = 1;
+ tmf->common.opcode = IBMVFC_TMF_MAD;
+ tmf->common.length = sizeof(*tmf);
+ tmf->scsi_id = port_id;
+ tmf->cancel_key = IBMVFC_PASSTHRU_CANCEL_KEY;
+ tmf->my_cancel_key = IBMVFC_INTERNAL_CANCEL_KEY;
+ rc = ibmvfc_send_event(evt, vhost, default_timeout);
+
+ if (rc != 0) {
+ vhost->aborting_passthru = 0;
+ dev_err(vhost->dev, "Failed to send cancel event. rc=%d\n", rc);
+ rc = -EIO;
+ } else
+ dev_info(vhost->dev, "Cancelling passthru command to port id 0x%lx\n",
+ port_id);
+
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+
+ LEAVE;
+ return rc;
+}
+
+/**
+ * ibmvfc_bsg_plogi - PLOGI into a target to handle a BSG command
+ * @vhost: struct ibmvfc_host to send command
+ * @port_id: port ID to send command
+ *
+ * Returns:
+ * 0 on success / other on failure
+ **/
+static int ibmvfc_bsg_plogi(struct ibmvfc_host *vhost, unsigned int port_id)
+{
+ struct ibmvfc_port_login *plogi;
+ struct ibmvfc_target *tgt;
+ struct ibmvfc_event *evt;
+ union ibmvfc_iu rsp_iu;
+ unsigned long flags;
+ int rc = 0, issue_login = 1;
+
+ ENTER;
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ list_for_each_entry(tgt, &vhost->targets, queue) {
+ if (tgt->scsi_id == port_id) {
+ issue_login = 0;
+ break;
+ }
+ }
+
+ if (!issue_login)
+ goto unlock_out;
+ if (unlikely((rc = ibmvfc_host_chkready(vhost))))
+ goto unlock_out;
+
+ evt = ibmvfc_get_event(vhost);
+ ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT);
+ plogi = &evt->iu.plogi;
+ memset(plogi, 0, sizeof(*plogi));
+ plogi->common.version = 1;
+ plogi->common.opcode = IBMVFC_PORT_LOGIN;
+ plogi->common.length = sizeof(*plogi);
+ plogi->scsi_id = port_id;
+ evt->sync_iu = &rsp_iu;
+ init_completion(&evt->comp);
+
+ rc = ibmvfc_send_event(evt, vhost, default_timeout);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+
+ if (rc)
+ return -EIO;
+
+ wait_for_completion(&evt->comp);
+
+ if (rsp_iu.plogi.common.status)
+ rc = -EIO;
+
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ ibmvfc_free_event(evt);
+unlock_out:
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ LEAVE;
+ return rc;
+}
+
+/**
+ * ibmvfc_bsg_request - Handle a BSG request
+ * @job: struct fc_bsg_job to be executed
+ *
+ * Returns:
+ * 0 on success / other on failure
+ **/
+static int ibmvfc_bsg_request(struct fc_bsg_job *job)
+{
+ struct ibmvfc_host *vhost = shost_priv(job->shost);
+ struct fc_rport *rport = job->rport;
+ struct ibmvfc_passthru_mad *mad;
+ struct ibmvfc_event *evt;
+ union ibmvfc_iu rsp_iu;
+ unsigned long flags, port_id = -1;
+ unsigned int code = job->request->msgcode;
+ int rc = 0, req_seg, rsp_seg, issue_login = 0;
+ u32 fc_flags, rsp_len;
+
+ ENTER;
+ job->reply->reply_payload_rcv_len = 0;
+ if (rport)
+ port_id = rport->port_id;
+
+ switch (code) {
+ case FC_BSG_HST_ELS_NOLOGIN:
+ port_id = (job->request->rqst_data.h_els.port_id[0] << 16) |
+ (job->request->rqst_data.h_els.port_id[1] << 8) |
+ job->request->rqst_data.h_els.port_id[2];
+ case FC_BSG_RPT_ELS:
+ fc_flags = IBMVFC_FC_ELS;
+ break;
+ case FC_BSG_HST_CT:
+ issue_login = 1;
+ port_id = (job->request->rqst_data.h_ct.port_id[0] << 16) |
+ (job->request->rqst_data.h_ct.port_id[1] << 8) |
+ job->request->rqst_data.h_ct.port_id[2];
+ case FC_BSG_RPT_CT:
+ fc_flags = IBMVFC_FC_CT_IU;
+ break;
+ default:
+ return -ENOTSUPP;
+ };
+
+ if (port_id == -1)
+ return -EINVAL;
+ if (!mutex_trylock(&vhost->passthru_mutex))
+ return -EBUSY;
+
+ job->dd_data = (void *)port_id;
+ req_seg = dma_map_sg(vhost->dev, job->request_payload.sg_list,
+ job->request_payload.sg_cnt, DMA_TO_DEVICE);
+
+ if (!req_seg) {
+ mutex_unlock(&vhost->passthru_mutex);
+ return -ENOMEM;
+ }
+
+ rsp_seg = dma_map_sg(vhost->dev, job->reply_payload.sg_list,
+ job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
+
+ if (!rsp_seg) {
+ dma_unmap_sg(vhost->dev, job->request_payload.sg_list,
+ job->request_payload.sg_cnt, DMA_TO_DEVICE);
+ mutex_unlock(&vhost->passthru_mutex);
+ return -ENOMEM;
+ }
+
+ if (req_seg > 1 || rsp_seg > 1) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ if (issue_login)
+ rc = ibmvfc_bsg_plogi(vhost, port_id);
+
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+
+ if (unlikely(rc || (rport && (rc = fc_remote_port_chkready(rport)))) ||
+ unlikely((rc = ibmvfc_host_chkready(vhost)))) {
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ goto out;
+ }
+
+ evt = ibmvfc_get_event(vhost);
+ ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT);
+ mad = &evt->iu.passthru;
+
+ memset(mad, 0, sizeof(*mad));
+ mad->common.version = 1;
+ mad->common.opcode = IBMVFC_PASSTHRU;
+ mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu);
+
+ mad->cmd_ioba.va = (u64)evt->crq.ioba +
+ offsetof(struct ibmvfc_passthru_mad, iu);
+ mad->cmd_ioba.len = sizeof(mad->iu);
+
+ mad->iu.cmd_len = job->request_payload.payload_len;
+ mad->iu.rsp_len = job->reply_payload.payload_len;
+ mad->iu.flags = fc_flags;
+ mad->iu.cancel_key = IBMVFC_PASSTHRU_CANCEL_KEY;
+
+ mad->iu.cmd.va = sg_dma_address(job->request_payload.sg_list);
+ mad->iu.cmd.len = sg_dma_len(job->request_payload.sg_list);
+ mad->iu.rsp.va = sg_dma_address(job->reply_payload.sg_list);
+ mad->iu.rsp.len = sg_dma_len(job->reply_payload.sg_list);
+ mad->iu.scsi_id = port_id;
+ mad->iu.tag = (u64)evt;
+ rsp_len = mad->iu.rsp.len;
+
+ evt->sync_iu = &rsp_iu;
+ init_completion(&evt->comp);
+ rc = ibmvfc_send_event(evt, vhost, 0);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+
+ if (rc) {
+ rc = -EIO;
+ goto out;
+ }
+
+ wait_for_completion(&evt->comp);
+
+ if (rsp_iu.passthru.common.status)
+ rc = -EIO;
+ else
+ job->reply->reply_payload_rcv_len = rsp_len;
+
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ ibmvfc_free_event(evt);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ job->reply->result = rc;
+ job->job_done(job);
+ rc = 0;
+out:
+ dma_unmap_sg(vhost->dev, job->request_payload.sg_list,
+ job->request_payload.sg_cnt, DMA_TO_DEVICE);
+ dma_unmap_sg(vhost->dev, job->reply_payload.sg_list,
+ job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
+ mutex_unlock(&vhost->passthru_mutex);
+ LEAVE;
+ return rc;
+}
+
+/**
* ibmvfc_reset_device - Reset the device with the specified reset type
* @sdev: scsi device to reset
* @type: reset type
struct ibmvfc_host *vhost = shost_priv(sdev->host);
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
struct ibmvfc_cmd *tmf;
- struct ibmvfc_event *evt;
+ struct ibmvfc_event *evt = NULL;
union ibmvfc_iu rsp_iu;
struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp;
int rsp_rc = -EBUSY;
sdev_printk(KERN_INFO, sdev, "Resetting %s\n", desc);
wait_for_completion(&evt->comp);
- if (rsp_iu.cmd.status) {
+ if (rsp_iu.cmd.status)
+ rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd);
+
+ if (rsp_code) {
if (fc_rsp->flags & FCP_RSP_LEN_VALID)
rsp_code = fc_rsp->data.info.rsp_code;
sdev_printk(KERN_INFO, sdev, "Aborting outstanding commands\n");
wait_for_completion(&evt->comp);
- if (rsp_iu.cmd.status) {
+ if (rsp_iu.cmd.status)
+ rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd);
+
+ if (rsp_code) {
if (fc_rsp->flags & FCP_RSP_LEN_VALID)
rsp_code = fc_rsp->data.info.rsp_code;
static int ibmvfc_cancel_all(struct scsi_device *sdev, int type)
{
struct ibmvfc_host *vhost = shost_priv(sdev->host);
- struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
+ struct scsi_target *starget = scsi_target(sdev);
+ struct fc_rport *rport = starget_to_rport(starget);
struct ibmvfc_tmf *tmf;
struct ibmvfc_event *evt, *found_evt;
union ibmvfc_iu rsp;
int_to_scsilun(sdev->lun, &tmf->lun);
tmf->flags = (type | IBMVFC_TMF_LUA_VALID);
tmf->cancel_key = (unsigned long)sdev->hostdata;
- tmf->my_cancel_key = (IBMVFC_TMF_CANCEL_KEY | (unsigned long)sdev->hostdata);
+ tmf->my_cancel_key = (unsigned long)starget->hostdata;
evt->sync_iu = &rsp;
init_completion(&evt->comp);
}
/**
+ * ibmvfc_match_target - Match function for specified target
+ * @evt: ibmvfc event struct
+ * @device: device to match (starget)
+ *
+ * Returns:
+ * 1 if event matches starget / 0 if event does not match starget
+ **/
+static int ibmvfc_match_target(struct ibmvfc_event *evt, void *device)
+{
+ if (evt->cmnd && scsi_target(evt->cmnd->device) == device)
+ return 1;
+ return 0;
+}
+
+/**
+ * ibmvfc_match_lun - Match function for specified LUN
+ * @evt: ibmvfc event struct
+ * @device: device to match (sdev)
+ *
+ * Returns:
+ * 1 if event matches sdev / 0 if event does not match sdev
+ **/
+static int ibmvfc_match_lun(struct ibmvfc_event *evt, void *device)
+{
+ if (evt->cmnd && evt->cmnd->device == device)
+ return 1;
+ return 0;
+}
+
+/**
+ * ibmvfc_wait_for_ops - Wait for ops to complete
+ * @vhost: ibmvfc host struct
+ * @device: device to match (starget or sdev)
+ * @match: match function
+ *
+ * Returns:
+ * SUCCESS / FAILED
+ **/
+static int ibmvfc_wait_for_ops(struct ibmvfc_host *vhost, void *device,
+ int (*match) (struct ibmvfc_event *, void *))
+{
+ struct ibmvfc_event *evt;
+ DECLARE_COMPLETION_ONSTACK(comp);
+ int wait;
+ unsigned long flags;
+ signed long timeout = init_timeout * HZ;
+
+ ENTER;
+ do {
+ wait = 0;
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ list_for_each_entry(evt, &vhost->sent, queue) {
+ if (match(evt, device)) {
+ evt->eh_comp = ∁
+ wait++;
+ }
+ }
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+
+ if (wait) {
+ timeout = wait_for_completion_timeout(&comp, timeout);
+
+ if (!timeout) {
+ wait = 0;
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ list_for_each_entry(evt, &vhost->sent, queue) {
+ if (match(evt, device)) {
+ evt->eh_comp = NULL;
+ wait++;
+ }
+ }
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ if (wait)
+ dev_err(vhost->dev, "Timed out waiting for aborted commands\n");
+ LEAVE;
+ return wait ? FAILED : SUCCESS;
+ }
+ }
+ } while (wait);
+
+ LEAVE;
+ return SUCCESS;
+}
+
+/**
* ibmvfc_eh_abort_handler - Abort a command
* @cmd: scsi command to abort
*
**/
static int ibmvfc_eh_abort_handler(struct scsi_cmnd *cmd)
{
- struct ibmvfc_host *vhost = shost_priv(cmd->device->host);
- struct ibmvfc_event *evt, *pos;
+ struct scsi_device *sdev = cmd->device;
+ struct ibmvfc_host *vhost = shost_priv(sdev->host);
int cancel_rc, abort_rc;
- unsigned long flags;
+ int rc = FAILED;
ENTER;
ibmvfc_wait_while_resetting(vhost);
- cancel_rc = ibmvfc_cancel_all(cmd->device, IBMVFC_TMF_ABORT_TASK_SET);
- abort_rc = ibmvfc_abort_task_set(cmd->device);
+ cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET);
+ abort_rc = ibmvfc_abort_task_set(sdev);
- if (!cancel_rc && !abort_rc) {
- spin_lock_irqsave(vhost->host->host_lock, flags);
- list_for_each_entry_safe(evt, pos, &vhost->sent, queue) {
- if (evt->cmnd && evt->cmnd->device == cmd->device)
- ibmvfc_fail_request(evt, DID_ABORT);
- }
- spin_unlock_irqrestore(vhost->host->host_lock, flags);
- LEAVE;
- return SUCCESS;
- }
+ if (!cancel_rc && !abort_rc)
+ rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun);
LEAVE;
- return FAILED;
+ return rc;
}
/**
**/
static int ibmvfc_eh_device_reset_handler(struct scsi_cmnd *cmd)
{
- struct ibmvfc_host *vhost = shost_priv(cmd->device->host);
- struct ibmvfc_event *evt, *pos;
+ struct scsi_device *sdev = cmd->device;
+ struct ibmvfc_host *vhost = shost_priv(sdev->host);
int cancel_rc, reset_rc;
- unsigned long flags;
+ int rc = FAILED;
ENTER;
ibmvfc_wait_while_resetting(vhost);
- cancel_rc = ibmvfc_cancel_all(cmd->device, IBMVFC_TMF_LUN_RESET);
- reset_rc = ibmvfc_reset_device(cmd->device, IBMVFC_LUN_RESET, "LUN");
+ cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_LUN_RESET);
+ reset_rc = ibmvfc_reset_device(sdev, IBMVFC_LUN_RESET, "LUN");
- if (!cancel_rc && !reset_rc) {
- spin_lock_irqsave(vhost->host->host_lock, flags);
- list_for_each_entry_safe(evt, pos, &vhost->sent, queue) {
- if (evt->cmnd && evt->cmnd->device == cmd->device)
- ibmvfc_fail_request(evt, DID_ABORT);
- }
- spin_unlock_irqrestore(vhost->host->host_lock, flags);
- LEAVE;
- return SUCCESS;
- }
+ if (!cancel_rc && !reset_rc)
+ rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun);
LEAVE;
- return FAILED;
+ return rc;
}
/**
- * ibmvfc_dev_cancel_all - Device iterated cancel all function
+ * ibmvfc_dev_cancel_all_abts - Device iterated cancel all function
* @sdev: scsi device struct
* @data: return code
*
**/
-static void ibmvfc_dev_cancel_all(struct scsi_device *sdev, void *data)
+static void ibmvfc_dev_cancel_all_abts(struct scsi_device *sdev, void *data)
{
unsigned long *rc = data;
- *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET);
+ *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET);
}
/**
- * ibmvfc_dev_abort_all - Device iterated abort task set function
+ * ibmvfc_dev_cancel_all_reset - Device iterated cancel all function
* @sdev: scsi device struct
* @data: return code
*
**/
-static void ibmvfc_dev_abort_all(struct scsi_device *sdev, void *data)
+static void ibmvfc_dev_cancel_all_reset(struct scsi_device *sdev, void *data)
{
unsigned long *rc = data;
- *rc |= ibmvfc_abort_task_set(sdev);
+ *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET);
+}
+
+/**
+ * ibmvfc_dev_abort_all - Device iterated abort task set function
+ * @sdev: scsi device struct
+ * @data: return code
+ *
+ **/
+static void ibmvfc_dev_abort_all(struct scsi_device *sdev, void *data)
+{
+ unsigned long *rc = data;
+ *rc |= ibmvfc_abort_task_set(sdev);
}
/**
**/
static int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd)
{
- struct ibmvfc_host *vhost = shost_priv(cmd->device->host);
- struct scsi_target *starget = scsi_target(cmd->device);
- struct ibmvfc_event *evt, *pos;
+ struct scsi_device *sdev = cmd->device;
+ struct ibmvfc_host *vhost = shost_priv(sdev->host);
+ struct scsi_target *starget = scsi_target(sdev);
int reset_rc;
+ int rc = FAILED;
unsigned long cancel_rc = 0;
- unsigned long flags;
ENTER;
ibmvfc_wait_while_resetting(vhost);
- starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all);
- reset_rc = ibmvfc_reset_device(cmd->device, IBMVFC_TARGET_RESET, "target");
+ starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_reset);
+ reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target");
- if (!cancel_rc && !reset_rc) {
- spin_lock_irqsave(vhost->host->host_lock, flags);
- list_for_each_entry_safe(evt, pos, &vhost->sent, queue) {
- if (evt->cmnd && scsi_target(evt->cmnd->device) == starget)
- ibmvfc_fail_request(evt, DID_ABORT);
- }
- spin_unlock_irqrestore(vhost->host->host_lock, flags);
- LEAVE;
- return SUCCESS;
- }
+ if (!cancel_rc && !reset_rc)
+ rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target);
LEAVE;
- return FAILED;
+ return rc;
}
/**
struct scsi_target *starget = to_scsi_target(&rport->dev);
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct ibmvfc_host *vhost = shost_priv(shost);
- struct ibmvfc_event *evt, *pos;
unsigned long cancel_rc = 0;
unsigned long abort_rc = 0;
- unsigned long flags;
+ int rc = FAILED;
ENTER;
- starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all);
+ starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_abts);
starget_for_each_device(starget, &abort_rc, ibmvfc_dev_abort_all);
- if (!cancel_rc && !abort_rc) {
- spin_lock_irqsave(shost->host_lock, flags);
- list_for_each_entry_safe(evt, pos, &vhost->sent, queue) {
- if (evt->cmnd && scsi_target(evt->cmnd->device) == starget)
- ibmvfc_fail_request(evt, DID_ABORT);
- }
- spin_unlock_irqrestore(shost->host_lock, flags);
- } else
- ibmvfc_issue_fc_host_lip(shost);
+ if (!cancel_rc && !abort_rc)
+ rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target);
- scsi_target_unblock(&rport->dev);
+ if (rc == FAILED)
+ ibmvfc_issue_fc_host_lip(shost);
LEAVE;
}
struct ibmvfc_host *vhost)
{
const char *desc = ibmvfc_get_ae_desc(crq->event);
+ struct ibmvfc_target *tgt;
- ibmvfc_log(vhost, 3, "%s event received\n", desc);
+ ibmvfc_log(vhost, 3, "%s event received. scsi_id: %llx, wwpn: %llx,"
+ " node_name: %llx\n", desc, crq->scsi_id, crq->wwpn, crq->node_name);
switch (crq->event) {
- case IBMVFC_AE_LINK_UP:
case IBMVFC_AE_RESUME:
+ switch (crq->link_state) {
+ case IBMVFC_AE_LS_LINK_DOWN:
+ ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN);
+ break;
+ case IBMVFC_AE_LS_LINK_DEAD:
+ ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD);
+ break;
+ case IBMVFC_AE_LS_LINK_UP:
+ case IBMVFC_AE_LS_LINK_BOUNCED:
+ default:
+ vhost->events_to_log |= IBMVFC_AE_LINKUP;
+ vhost->delay_init = 1;
+ __ibmvfc_reset_host(vhost);
+ break;
+ };
+
+ break;
+ case IBMVFC_AE_LINK_UP:
vhost->events_to_log |= IBMVFC_AE_LINKUP;
- ibmvfc_init_host(vhost);
+ vhost->delay_init = 1;
+ __ibmvfc_reset_host(vhost);
break;
case IBMVFC_AE_SCN_FABRIC:
+ case IBMVFC_AE_SCN_DOMAIN:
vhost->events_to_log |= IBMVFC_AE_RSCN;
- ibmvfc_init_host(vhost);
+ vhost->delay_init = 1;
+ __ibmvfc_reset_host(vhost);
break;
case IBMVFC_AE_SCN_NPORT:
case IBMVFC_AE_SCN_GROUP:
- case IBMVFC_AE_SCN_DOMAIN:
vhost->events_to_log |= IBMVFC_AE_RSCN;
+ ibmvfc_reinit_host(vhost);
+ break;
case IBMVFC_AE_ELS_LOGO:
case IBMVFC_AE_ELS_PRLO:
case IBMVFC_AE_ELS_PLOGI:
- ibmvfc_reinit_host(vhost);
+ list_for_each_entry(tgt, &vhost->targets, queue) {
+ if (!crq->scsi_id && !crq->wwpn && !crq->node_name)
+ break;
+ if (crq->scsi_id && tgt->scsi_id != crq->scsi_id)
+ continue;
+ if (crq->wwpn && tgt->ids.port_name != crq->wwpn)
+ continue;
+ if (crq->node_name && tgt->ids.node_name != crq->node_name)
+ continue;
+ if (tgt->need_login && crq->event == IBMVFC_AE_ELS_LOGO)
+ tgt->logo_rcvd = 1;
+ if (!tgt->need_login || crq->event == IBMVFC_AE_ELS_PLOGI) {
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+ ibmvfc_reinit_host(vhost);
+ }
+ }
break;
case IBMVFC_AE_LINK_DOWN:
case IBMVFC_AE_ADAPTER_FAILED:
ibmvfc_link_down(vhost, IBMVFC_HALTED);
break;
default:
- dev_err(vhost->dev, "Unknown async event received: %ld\n", crq->event);
+ dev_err(vhost->dev, "Unknown async event received: %lld\n", crq->event);
break;
};
}
return;
case IBMVFC_CRQ_XPORT_EVENT:
vhost->state = IBMVFC_NO_CRQ;
+ vhost->logged_in = 0;
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
if (crq->format == IBMVFC_PARTITION_MIGRATED) {
/* We need to re-setup the interpartition connection */
* actually sent
*/
if (unlikely(!ibmvfc_valid_event(&vhost->pool, evt))) {
- dev_err(vhost->dev, "Returned correlation_token 0x%08lx is invalid!\n",
+ dev_err(vhost->dev, "Returned correlation_token 0x%08llx is invalid!\n",
crq->ioba);
return;
}
if (unlikely(atomic_read(&evt->free))) {
- dev_err(vhost->dev, "Received duplicate correlation_token 0x%08lx!\n",
+ dev_err(vhost->dev, "Received duplicate correlation_token 0x%08llx!\n",
crq->ioba);
return;
}
done = 1;
}
- if (vhost->state != IBMVFC_NO_CRQ && vhost->action == IBMVFC_HOST_ACTION_NONE)
+ if (vhost->scan_complete)
done = 1;
spin_unlock_irqrestore(shost->host_lock, flags);
return done;
}
/**
+ * ibmvfc_target_alloc - Setup the target's task set value
+ * @starget: struct scsi_target
+ *
+ * Set the target's task set value so that error handling works as
+ * expected.
+ *
+ * Returns:
+ * 0 on success / -ENXIO if device does not exist
+ **/
+static int ibmvfc_target_alloc(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ibmvfc_host *vhost = shost_priv(shost);
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ starget->hostdata = (void *)(unsigned long)vhost->task_set++;
+ spin_unlock_irqrestore(shost->host_lock, flags);
+ return 0;
+}
+
+/**
* ibmvfc_slave_configure - Configure the device
* @sdev: struct scsi_device device to configure
*
* ibmvfc_change_queue_depth - Change the device's queue depth
* @sdev: scsi device struct
* @qdepth: depth to set
+ * @reason: calling context
*
* Return value:
* actual depth set
**/
-static int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth)
+static int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth,
+ int reason)
{
+ if (reason != SCSI_QDEPTH_DEFAULT)
+ return -EOPNOTSUPP;
+
if (qdepth > IBMVFC_MAX_CMDS_PER_LUN)
qdepth = IBMVFC_MAX_CMDS_PER_LUN;
vhost->login_buf->resp.partition_name);
}
-static struct device_attribute ibmvfc_host_partition_name = {
- .attr = {
- .name = "partition_name",
- .mode = S_IRUGO,
- },
- .show = ibmvfc_show_host_partition_name,
-};
-
static ssize_t ibmvfc_show_host_device_name(struct device *dev,
struct device_attribute *attr, char *buf)
{
vhost->login_buf->resp.device_name);
}
-static struct device_attribute ibmvfc_host_device_name = {
- .attr = {
- .name = "device_name",
- .mode = S_IRUGO,
- },
- .show = ibmvfc_show_host_device_name,
-};
-
static ssize_t ibmvfc_show_host_loc_code(struct device *dev,
struct device_attribute *attr, char *buf)
{
vhost->login_buf->resp.port_loc_code);
}
-static struct device_attribute ibmvfc_host_loc_code = {
- .attr = {
- .name = "port_loc_code",
- .mode = S_IRUGO,
- },
- .show = ibmvfc_show_host_loc_code,
-};
-
static ssize_t ibmvfc_show_host_drc_name(struct device *dev,
struct device_attribute *attr, char *buf)
{
vhost->login_buf->resp.drc_name);
}
-static struct device_attribute ibmvfc_host_drc_name = {
- .attr = {
- .name = "drc_name",
- .mode = S_IRUGO,
- },
- .show = ibmvfc_show_host_drc_name,
-};
-
static ssize_t ibmvfc_show_host_npiv_version(struct device *dev,
struct device_attribute *attr, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%d\n", vhost->login_buf->resp.version);
}
-static struct device_attribute ibmvfc_host_npiv_version = {
- .attr = {
- .name = "npiv_version",
- .mode = S_IRUGO,
- },
- .show = ibmvfc_show_host_npiv_version,
-};
+static ssize_t ibmvfc_show_host_capabilities(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct ibmvfc_host *vhost = shost_priv(shost);
+ return snprintf(buf, PAGE_SIZE, "%llx\n", vhost->login_buf->resp.capabilities);
+}
/**
* ibmvfc_show_log_level - Show the adapter's error logging level
return strlen(buf);
}
-static struct device_attribute ibmvfc_log_level_attr = {
- .attr = {
- .name = "log_level",
- .mode = S_IRUGO | S_IWUSR,
- },
- .show = ibmvfc_show_log_level,
- .store = ibmvfc_store_log_level
-};
+static DEVICE_ATTR(partition_name, S_IRUGO, ibmvfc_show_host_partition_name, NULL);
+static DEVICE_ATTR(device_name, S_IRUGO, ibmvfc_show_host_device_name, NULL);
+static DEVICE_ATTR(port_loc_code, S_IRUGO, ibmvfc_show_host_loc_code, NULL);
+static DEVICE_ATTR(drc_name, S_IRUGO, ibmvfc_show_host_drc_name, NULL);
+static DEVICE_ATTR(npiv_version, S_IRUGO, ibmvfc_show_host_npiv_version, NULL);
+static DEVICE_ATTR(capabilities, S_IRUGO, ibmvfc_show_host_capabilities, NULL);
+static DEVICE_ATTR(log_level, S_IRUGO | S_IWUSR,
+ ibmvfc_show_log_level, ibmvfc_store_log_level);
#ifdef CONFIG_SCSI_IBMVFC_TRACE
/**
#endif
static struct device_attribute *ibmvfc_attrs[] = {
- &ibmvfc_host_partition_name,
- &ibmvfc_host_device_name,
- &ibmvfc_host_loc_code,
- &ibmvfc_host_drc_name,
- &ibmvfc_host_npiv_version,
- &ibmvfc_log_level_attr,
+ &dev_attr_partition_name,
+ &dev_attr_device_name,
+ &dev_attr_port_loc_code,
+ &dev_attr_drc_name,
+ &dev_attr_npiv_version,
+ &dev_attr_capabilities,
+ &dev_attr_log_level,
NULL
};
.eh_host_reset_handler = ibmvfc_eh_host_reset_handler,
.slave_alloc = ibmvfc_slave_alloc,
.slave_configure = ibmvfc_slave_configure,
+ .target_alloc = ibmvfc_target_alloc,
.scan_finished = ibmvfc_scan_finished,
.change_queue_depth = ibmvfc_change_queue_depth,
.change_queue_type = ibmvfc_change_queue_type,
static irqreturn_t ibmvfc_interrupt(int irq, void *dev_instance)
{
struct ibmvfc_host *vhost = (struct ibmvfc_host *)dev_instance;
+ unsigned long flags;
+
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ vio_disable_interrupts(to_vio_dev(vhost->dev));
+ tasklet_schedule(&vhost->tasklet);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ return IRQ_HANDLED;
+}
+
+/**
+ * ibmvfc_tasklet - Interrupt handler tasklet
+ * @data: ibmvfc host struct
+ *
+ * Returns:
+ * Nothing
+ **/
+static void ibmvfc_tasklet(void *data)
+{
+ struct ibmvfc_host *vhost = data;
struct vio_dev *vdev = to_vio_dev(vhost->dev);
struct ibmvfc_crq *crq;
struct ibmvfc_async_crq *async;
int done = 0;
spin_lock_irqsave(vhost->host->host_lock, flags);
- vio_disable_interrupts(to_vio_dev(vhost->dev));
while (!done) {
- /* Pull all the valid messages off the CRQ */
- while ((crq = ibmvfc_next_crq(vhost)) != NULL) {
- ibmvfc_handle_crq(crq, vhost);
- crq->valid = 0;
- }
-
/* Pull all the valid messages off the async CRQ */
while ((async = ibmvfc_next_async_crq(vhost)) != NULL) {
ibmvfc_handle_async(async, vhost);
async->valid = 0;
}
- vio_enable_interrupts(vdev);
- if ((crq = ibmvfc_next_crq(vhost)) != NULL) {
- vio_disable_interrupts(vdev);
+ /* Pull all the valid messages off the CRQ */
+ while ((crq = ibmvfc_next_crq(vhost)) != NULL) {
ibmvfc_handle_crq(crq, vhost);
crq->valid = 0;
- } else if ((async = ibmvfc_next_async_crq(vhost)) != NULL) {
+ }
+
+ vio_enable_interrupts(vdev);
+ if ((async = ibmvfc_next_async_crq(vhost)) != NULL) {
vio_disable_interrupts(vdev);
ibmvfc_handle_async(async, vhost);
+ async->valid = 0;
+ } else if ((crq = ibmvfc_next_crq(vhost)) != NULL) {
+ vio_disable_interrupts(vdev);
+ ibmvfc_handle_crq(crq, vhost);
crq->valid = 0;
} else
done = 1;
}
spin_unlock_irqrestore(vhost->host->host_lock, flags);
- return IRQ_HANDLED;
}
/**
* @tgt: ibmvfc target struct
* @job_step: initialization job step
*
+ * Returns: 1 if step will be retried / 0 if not
+ *
**/
-static void ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt,
+static int ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt,
void (*job_step) (struct ibmvfc_target *))
{
- if (++tgt->init_retries > IBMVFC_MAX_INIT_RETRIES) {
+ if (++tgt->init_retries > IBMVFC_MAX_TGT_INIT_RETRIES) {
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
wake_up(&tgt->vhost->work_wait_q);
+ return 0;
} else
ibmvfc_init_tgt(tgt, job_step);
+ return 1;
+}
+
+/* Defined in FC-LS */
+static const struct {
+ int code;
+ int retry;
+ int logged_in;
+} prli_rsp [] = {
+ { 0, 1, 0 },
+ { 1, 0, 1 },
+ { 2, 1, 0 },
+ { 3, 1, 0 },
+ { 4, 0, 0 },
+ { 5, 0, 0 },
+ { 6, 0, 1 },
+ { 7, 0, 0 },
+ { 8, 1, 0 },
+};
+
+/**
+ * ibmvfc_get_prli_rsp - Find PRLI response index
+ * @flags: PRLI response flags
+ *
+ **/
+static int ibmvfc_get_prli_rsp(u16 flags)
+{
+ int i;
+ int code = (flags & 0x0f00) >> 8;
+
+ for (i = 0; i < ARRAY_SIZE(prli_rsp); i++)
+ if (prli_rsp[i].code == code)
+ return i;
+
+ return 0;
}
/**
struct ibmvfc_target *tgt = evt->tgt;
struct ibmvfc_host *vhost = evt->vhost;
struct ibmvfc_process_login *rsp = &evt->xfer_iu->prli;
+ struct ibmvfc_prli_svc_parms *parms = &rsp->parms;
u32 status = rsp->common.status;
+ int index, level = IBMVFC_DEFAULT_LOG_LEVEL;
vhost->discovery_threads--;
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
switch (status) {
case IBMVFC_MAD_SUCCESS:
- tgt_dbg(tgt, "Process Login succeeded\n");
- tgt->need_login = 0;
- ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_ADD_RPORT);
+ tgt_dbg(tgt, "Process Login succeeded: %X %02X %04X\n",
+ parms->type, parms->flags, parms->service_parms);
+
+ if (parms->type == IBMVFC_SCSI_FCP_TYPE) {
+ index = ibmvfc_get_prli_rsp(parms->flags);
+ if (prli_rsp[index].logged_in) {
+ if (parms->flags & IBMVFC_PRLI_EST_IMG_PAIR) {
+ tgt->need_login = 0;
+ tgt->ids.roles = 0;
+ if (parms->service_parms & IBMVFC_PRLI_TARGET_FUNC)
+ tgt->ids.roles |= FC_PORT_ROLE_FCP_TARGET;
+ if (parms->service_parms & IBMVFC_PRLI_INITIATOR_FUNC)
+ tgt->ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
+ tgt->add_rport = 1;
+ } else
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+ } else if (prli_rsp[index].retry)
+ ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli);
+ else
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+ } else
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
break;
case IBMVFC_MAD_DRIVER_FAILED:
break;
break;
case IBMVFC_MAD_FAILED:
default:
- tgt_err(tgt, "Process Login failed: %s (%x:%x) rc=0x%02X\n",
+ if ((rsp->status & IBMVFC_VIOS_FAILURE) && rsp->error == IBMVFC_PLOGI_REQUIRED)
+ level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi);
+ else if (tgt->logo_rcvd)
+ level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi);
+ else if (ibmvfc_retry_cmd(rsp->status, rsp->error))
+ level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli);
+ else
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+
+ tgt_log(tgt, level, "Process Login failed: %s (%x:%x) rc=0x%02X\n",
ibmvfc_get_cmd_error(rsp->status, rsp->error),
rsp->status, rsp->error, status);
- if (ibmvfc_retry_cmd(rsp->status, rsp->error))
- ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli);
break;
};
struct ibmvfc_host *vhost = evt->vhost;
struct ibmvfc_port_login *rsp = &evt->xfer_iu->plogi;
u32 status = rsp->common.status;
+ int level = IBMVFC_DEFAULT_LOG_LEVEL;
vhost->discovery_threads--;
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
tgt->ids.node_name = wwn_to_u64(rsp->service_parms.node_name);
tgt->ids.port_name = wwn_to_u64(rsp->service_parms.port_name);
tgt->ids.port_id = tgt->scsi_id;
- tgt->ids.roles = FC_PORT_ROLE_FCP_TARGET;
memcpy(&tgt->service_parms, &rsp->service_parms,
sizeof(tgt->service_parms));
memcpy(&tgt->service_parms_change, &rsp->service_parms_change,
break;
case IBMVFC_MAD_FAILED:
default:
- tgt_err(tgt, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n",
+ if (ibmvfc_retry_cmd(rsp->status, rsp->error))
+ level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi);
+ else
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+
+ tgt_log(tgt, level, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n",
ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error,
ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type,
ibmvfc_get_ls_explain(rsp->fc_explain), rsp->fc_explain, status);
-
- if (ibmvfc_retry_cmd(rsp->status, rsp->error))
- ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi);
break;
};
return;
kref_get(&tgt->kref);
+ tgt->logo_rcvd = 0;
evt = ibmvfc_get_event(vhost);
vhost->discovery_threads++;
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT);
}
/**
+ * ibmvfc_adisc_needs_plogi - Does device need PLOGI?
+ * @mad: ibmvfc passthru mad struct
+ * @tgt: ibmvfc target struct
+ *
+ * Returns:
+ * 1 if PLOGI needed / 0 if PLOGI not needed
+ **/
+static int ibmvfc_adisc_needs_plogi(struct ibmvfc_passthru_mad *mad,
+ struct ibmvfc_target *tgt)
+{
+ if (memcmp(&mad->fc_iu.response[2], &tgt->ids.port_name,
+ sizeof(tgt->ids.port_name)))
+ return 1;
+ if (memcmp(&mad->fc_iu.response[4], &tgt->ids.node_name,
+ sizeof(tgt->ids.node_name)))
+ return 1;
+ if (mad->fc_iu.response[6] != tgt->scsi_id)
+ return 1;
+ return 0;
+}
+
+/**
+ * ibmvfc_tgt_adisc_done - Completion handler for ADISC
+ * @evt: ibmvfc event struct
+ *
+ **/
+static void ibmvfc_tgt_adisc_done(struct ibmvfc_event *evt)
+{
+ struct ibmvfc_target *tgt = evt->tgt;
+ struct ibmvfc_host *vhost = evt->vhost;
+ struct ibmvfc_passthru_mad *mad = &evt->xfer_iu->passthru;
+ u32 status = mad->common.status;
+ u8 fc_reason, fc_explain;
+
+ vhost->discovery_threads--;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
+ del_timer(&tgt->timer);
+
+ switch (status) {
+ case IBMVFC_MAD_SUCCESS:
+ tgt_dbg(tgt, "ADISC succeeded\n");
+ if (ibmvfc_adisc_needs_plogi(mad, tgt))
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+ break;
+ case IBMVFC_MAD_DRIVER_FAILED:
+ break;
+ case IBMVFC_MAD_FAILED:
+ default:
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+ fc_reason = (mad->fc_iu.response[1] & 0x00ff0000) >> 16;
+ fc_explain = (mad->fc_iu.response[1] & 0x0000ff00) >> 8;
+ tgt_info(tgt, "ADISC failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n",
+ ibmvfc_get_cmd_error(mad->iu.status, mad->iu.error),
+ mad->iu.status, mad->iu.error,
+ ibmvfc_get_fc_type(fc_reason), fc_reason,
+ ibmvfc_get_ls_explain(fc_explain), fc_explain, status);
+ break;
+ };
+
+ kref_put(&tgt->kref, ibmvfc_release_tgt);
+ ibmvfc_free_event(evt);
+ wake_up(&vhost->work_wait_q);
+}
+
+/**
+ * ibmvfc_init_passthru - Initialize an event struct for FC passthru
+ * @evt: ibmvfc event struct
+ *
+ **/
+static void ibmvfc_init_passthru(struct ibmvfc_event *evt)
+{
+ struct ibmvfc_passthru_mad *mad = &evt->iu.passthru;
+
+ memset(mad, 0, sizeof(*mad));
+ mad->common.version = 1;
+ mad->common.opcode = IBMVFC_PASSTHRU;
+ mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu);
+ mad->cmd_ioba.va = (u64)evt->crq.ioba +
+ offsetof(struct ibmvfc_passthru_mad, iu);
+ mad->cmd_ioba.len = sizeof(mad->iu);
+ mad->iu.cmd_len = sizeof(mad->fc_iu.payload);
+ mad->iu.rsp_len = sizeof(mad->fc_iu.response);
+ mad->iu.cmd.va = (u64)evt->crq.ioba +
+ offsetof(struct ibmvfc_passthru_mad, fc_iu) +
+ offsetof(struct ibmvfc_passthru_fc_iu, payload);
+ mad->iu.cmd.len = sizeof(mad->fc_iu.payload);
+ mad->iu.rsp.va = (u64)evt->crq.ioba +
+ offsetof(struct ibmvfc_passthru_mad, fc_iu) +
+ offsetof(struct ibmvfc_passthru_fc_iu, response);
+ mad->iu.rsp.len = sizeof(mad->fc_iu.response);
+}
+
+/**
+ * ibmvfc_tgt_adisc_cancel_done - Completion handler when cancelling an ADISC
+ * @evt: ibmvfc event struct
+ *
+ * Just cleanup this event struct. Everything else is handled by
+ * the ADISC completion handler. If the ADISC never actually comes
+ * back, we still have the timer running on the ADISC event struct
+ * which will fire and cause the CRQ to get reset.
+ *
+ **/
+static void ibmvfc_tgt_adisc_cancel_done(struct ibmvfc_event *evt)
+{
+ struct ibmvfc_host *vhost = evt->vhost;
+ struct ibmvfc_target *tgt = evt->tgt;
+
+ tgt_dbg(tgt, "ADISC cancel complete\n");
+ vhost->abort_threads--;
+ ibmvfc_free_event(evt);
+ kref_put(&tgt->kref, ibmvfc_release_tgt);
+ wake_up(&vhost->work_wait_q);
+}
+
+/**
+ * ibmvfc_adisc_timeout - Handle an ADISC timeout
+ * @tgt: ibmvfc target struct
+ *
+ * If an ADISC times out, send a cancel. If the cancel times
+ * out, reset the CRQ. When the ADISC comes back as cancelled,
+ * log back into the target.
+ **/
+static void ibmvfc_adisc_timeout(struct ibmvfc_target *tgt)
+{
+ struct ibmvfc_host *vhost = tgt->vhost;
+ struct ibmvfc_event *evt;
+ struct ibmvfc_tmf *tmf;
+ unsigned long flags;
+ int rc;
+
+ tgt_dbg(tgt, "ADISC timeout\n");
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ if (vhost->abort_threads >= disc_threads ||
+ tgt->action != IBMVFC_TGT_ACTION_INIT_WAIT ||
+ vhost->state != IBMVFC_INITIALIZING ||
+ vhost->action != IBMVFC_HOST_ACTION_QUERY_TGTS) {
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ return;
+ }
+
+ vhost->abort_threads++;
+ kref_get(&tgt->kref);
+ evt = ibmvfc_get_event(vhost);
+ ibmvfc_init_event(evt, ibmvfc_tgt_adisc_cancel_done, IBMVFC_MAD_FORMAT);
+
+ evt->tgt = tgt;
+ tmf = &evt->iu.tmf;
+ memset(tmf, 0, sizeof(*tmf));
+ tmf->common.version = 1;
+ tmf->common.opcode = IBMVFC_TMF_MAD;
+ tmf->common.length = sizeof(*tmf);
+ tmf->scsi_id = tgt->scsi_id;
+ tmf->cancel_key = tgt->cancel_key;
+
+ rc = ibmvfc_send_event(evt, vhost, default_timeout);
+
+ if (rc) {
+ tgt_err(tgt, "Failed to send cancel event for ADISC. rc=%d\n", rc);
+ vhost->abort_threads--;
+ kref_put(&tgt->kref, ibmvfc_release_tgt);
+ __ibmvfc_reset_host(vhost);
+ } else
+ tgt_dbg(tgt, "Attempting to cancel ADISC\n");
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+}
+
+/**
+ * ibmvfc_tgt_adisc - Initiate an ADISC for specified target
+ * @tgt: ibmvfc target struct
+ *
+ * When sending an ADISC we end up with two timers running. The
+ * first timer is the timer in the ibmvfc target struct. If this
+ * fires, we send a cancel to the target. The second timer is the
+ * timer on the ibmvfc event for the ADISC, which is longer. If that
+ * fires, it means the ADISC timed out and our attempt to cancel it
+ * also failed, so we need to reset the CRQ.
+ **/
+static void ibmvfc_tgt_adisc(struct ibmvfc_target *tgt)
+{
+ struct ibmvfc_passthru_mad *mad;
+ struct ibmvfc_host *vhost = tgt->vhost;
+ struct ibmvfc_event *evt;
+
+ if (vhost->discovery_threads >= disc_threads)
+ return;
+
+ kref_get(&tgt->kref);
+ evt = ibmvfc_get_event(vhost);
+ vhost->discovery_threads++;
+ ibmvfc_init_event(evt, ibmvfc_tgt_adisc_done, IBMVFC_MAD_FORMAT);
+ evt->tgt = tgt;
+
+ ibmvfc_init_passthru(evt);
+ mad = &evt->iu.passthru;
+ mad->iu.flags = IBMVFC_FC_ELS;
+ mad->iu.scsi_id = tgt->scsi_id;
+ mad->iu.cancel_key = tgt->cancel_key;
+
+ mad->fc_iu.payload[0] = IBMVFC_ADISC;
+ memcpy(&mad->fc_iu.payload[2], &vhost->login_buf->resp.port_name,
+ sizeof(vhost->login_buf->resp.port_name));
+ memcpy(&mad->fc_iu.payload[4], &vhost->login_buf->resp.node_name,
+ sizeof(vhost->login_buf->resp.node_name));
+ mad->fc_iu.payload[6] = vhost->login_buf->resp.scsi_id & 0x00ffffff;
+
+ if (timer_pending(&tgt->timer))
+ mod_timer(&tgt->timer, jiffies + (IBMVFC_ADISC_TIMEOUT * HZ));
+ else {
+ tgt->timer.data = (unsigned long) tgt;
+ tgt->timer.expires = jiffies + (IBMVFC_ADISC_TIMEOUT * HZ);
+ tgt->timer.function = (void (*)(unsigned long))ibmvfc_adisc_timeout;
+ add_timer(&tgt->timer);
+ }
+
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT);
+ if (ibmvfc_send_event(evt, vhost, IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT)) {
+ vhost->discovery_threads--;
+ del_timer(&tgt->timer);
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
+ kref_put(&tgt->kref, ibmvfc_release_tgt);
+ } else
+ tgt_dbg(tgt, "Sent ADISC\n");
+}
+
+/**
* ibmvfc_tgt_query_target_done - Completion handler for Query Target MAD
* @evt: ibmvfc event struct
*
struct ibmvfc_host *vhost = evt->vhost;
struct ibmvfc_query_tgt *rsp = &evt->xfer_iu->query_tgt;
u32 status = rsp->common.status;
+ int level = IBMVFC_DEFAULT_LOG_LEVEL;
vhost->discovery_threads--;
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
tgt->new_scsi_id = rsp->scsi_id;
if (rsp->scsi_id != tgt->scsi_id)
ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout);
+ else
+ ibmvfc_init_tgt(tgt, ibmvfc_tgt_adisc);
break;
case IBMVFC_MAD_DRIVER_FAILED:
break;
break;
case IBMVFC_MAD_FAILED:
default:
- tgt_err(tgt, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n",
- ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error,
- ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type,
- ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status);
-
if ((rsp->status & IBMVFC_FABRIC_MAPPED) == IBMVFC_FABRIC_MAPPED &&
rsp->error == IBMVFC_UNABLE_TO_PERFORM_REQ &&
rsp->fc_explain == IBMVFC_PORT_NAME_NOT_REG)
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
else if (ibmvfc_retry_cmd(rsp->status, rsp->error))
- ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target);
+ level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target);
+ else
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+
+ tgt_log(tgt, level, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n",
+ ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error,
+ ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type,
+ ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status);
break;
};
}
spin_unlock_irqrestore(vhost->host->host_lock, flags);
- tgt = mempool_alloc(vhost->tgt_pool, GFP_KERNEL);
+ tgt = mempool_alloc(vhost->tgt_pool, GFP_NOIO);
if (!tgt) {
- dev_err(vhost->dev, "Target allocation failure for scsi id %08lx\n",
+ dev_err(vhost->dev, "Target allocation failure for scsi id %08llx\n",
scsi_id);
return -ENOMEM;
}
+ memset(tgt, 0, sizeof(*tgt));
tgt->scsi_id = scsi_id;
tgt->new_scsi_id = scsi_id;
tgt->vhost = vhost;
tgt->need_login = 1;
+ tgt->cancel_key = vhost->task_set++;
+ init_timer(&tgt->timer);
kref_init(&tgt->kref);
ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout);
spin_lock_irqsave(vhost->host->host_lock, flags);
struct ibmvfc_host *vhost = evt->vhost;
struct ibmvfc_discover_targets *rsp = &evt->xfer_iu->discover_targets;
u32 mad_status = rsp->common.status;
+ int level = IBMVFC_DEFAULT_LOG_LEVEL;
switch (mad_status) {
case IBMVFC_MAD_SUCCESS:
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_ALLOC_TGTS);
break;
case IBMVFC_MAD_FAILED:
- dev_err(vhost->dev, "Discover Targets failed: %s (%x:%x)\n",
- ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error);
- ibmvfc_retry_host_init(vhost);
+ level += ibmvfc_retry_host_init(vhost);
+ ibmvfc_log(vhost, level, "Discover Targets failed: %s (%x:%x)\n",
+ ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error);
break;
case IBMVFC_MAD_DRIVER_FAILED:
break;
u32 mad_status = evt->xfer_iu->npiv_login.common.status;
struct ibmvfc_npiv_login_resp *rsp = &vhost->login_buf->resp;
unsigned int npiv_max_sectors;
+ int level = IBMVFC_DEFAULT_LOG_LEVEL;
switch (mad_status) {
case IBMVFC_MAD_SUCCESS:
ibmvfc_free_event(evt);
break;
case IBMVFC_MAD_FAILED:
- dev_err(vhost->dev, "NPIV Login failed: %s (%x:%x)\n",
- ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error);
if (ibmvfc_retry_cmd(rsp->status, rsp->error))
- ibmvfc_retry_host_init(vhost);
+ level += ibmvfc_retry_host_init(vhost);
else
ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD);
+ ibmvfc_log(vhost, level, "NPIV Login failed: %s (%x:%x)\n",
+ ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error);
ibmvfc_free_event(evt);
return;
case IBMVFC_MAD_CRQ_ERROR:
return;
}
+ vhost->logged_in = 1;
npiv_max_sectors = min((uint)(rsp->max_dma_len >> 9), IBMVFC_MAX_SECTORS);
dev_info(vhost->dev, "Host partition: %s, device: %s %s %s max sectors %u\n",
rsp->partition_name, rsp->device_name, rsp->port_loc_code,
mad->buffer.va = vhost->login_buf_dma;
mad->buffer.len = sizeof(*vhost->login_buf);
- memset(vhost->async_crq.msgs, 0, PAGE_SIZE);
- vhost->async_crq.cur = 0;
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT);
if (!ibmvfc_send_event(evt, vhost, default_timeout))
};
/**
+ * ibmvfc_npiv_logout_done - Completion handler for NPIV Logout
+ * @vhost: ibmvfc host struct
+ *
+ **/
+static void ibmvfc_npiv_logout_done(struct ibmvfc_event *evt)
+{
+ struct ibmvfc_host *vhost = evt->vhost;
+ u32 mad_status = evt->xfer_iu->npiv_logout.common.status;
+
+ ibmvfc_free_event(evt);
+
+ switch (mad_status) {
+ case IBMVFC_MAD_SUCCESS:
+ if (list_empty(&vhost->sent) &&
+ vhost->action == IBMVFC_HOST_ACTION_LOGO_WAIT) {
+ ibmvfc_init_host(vhost);
+ return;
+ }
+ break;
+ case IBMVFC_MAD_FAILED:
+ case IBMVFC_MAD_NOT_SUPPORTED:
+ case IBMVFC_MAD_CRQ_ERROR:
+ case IBMVFC_MAD_DRIVER_FAILED:
+ default:
+ ibmvfc_dbg(vhost, "NPIV Logout failed. 0x%X\n", mad_status);
+ break;
+ }
+
+ ibmvfc_hard_reset_host(vhost);
+}
+
+/**
+ * ibmvfc_npiv_logout - Issue an NPIV Logout
+ * @vhost: ibmvfc host struct
+ *
+ **/
+static void ibmvfc_npiv_logout(struct ibmvfc_host *vhost)
+{
+ struct ibmvfc_npiv_logout_mad *mad;
+ struct ibmvfc_event *evt;
+
+ evt = ibmvfc_get_event(vhost);
+ ibmvfc_init_event(evt, ibmvfc_npiv_logout_done, IBMVFC_MAD_FORMAT);
+
+ mad = &evt->iu.npiv_logout;
+ memset(mad, 0, sizeof(*mad));
+ mad->common.version = 1;
+ mad->common.opcode = IBMVFC_NPIV_LOGOUT;
+ mad->common.length = sizeof(struct ibmvfc_npiv_logout_mad);
+
+ ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO_WAIT);
+
+ if (!ibmvfc_send_event(evt, vhost, default_timeout))
+ ibmvfc_dbg(vhost, "Sent NPIV logout\n");
+ else
+ ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD);
+}
+
+/**
* ibmvfc_dev_init_to_do - Is there target initialization work to do?
* @vhost: ibmvfc host struct
*
switch (vhost->action) {
case IBMVFC_HOST_ACTION_NONE:
case IBMVFC_HOST_ACTION_INIT_WAIT:
+ case IBMVFC_HOST_ACTION_LOGO_WAIT:
return 0;
case IBMVFC_HOST_ACTION_TGT_INIT:
case IBMVFC_HOST_ACTION_QUERY_TGTS:
if (tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT)
return 0;
return 1;
+ case IBMVFC_HOST_ACTION_LOGO:
case IBMVFC_HOST_ACTION_INIT:
case IBMVFC_HOST_ACTION_ALLOC_TGTS:
- case IBMVFC_HOST_ACTION_TGT_ADD:
case IBMVFC_HOST_ACTION_TGT_DEL:
+ case IBMVFC_HOST_ACTION_TGT_DEL_FAILED:
case IBMVFC_HOST_ACTION_QUERY:
default:
break;
tgt_dbg(tgt, "Adding rport\n");
rport = fc_remote_port_add(vhost->host, 0, &tgt->ids);
spin_lock_irqsave(vhost->host->host_lock, flags);
- tgt->rport = rport;
- ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
+
+ if (rport && tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) {
+ tgt_dbg(tgt, "Deleting rport\n");
+ list_del(&tgt->queue);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ fc_remote_port_delete(rport);
+ del_timer_sync(&tgt->timer);
+ kref_put(&tgt->kref, ibmvfc_release_tgt);
+ return;
+ }
+
if (rport) {
tgt_dbg(tgt, "rport add succeeded\n");
+ tgt->rport = rport;
rport->maxframe_size = tgt->service_parms.common.bb_rcv_sz & 0x0fff;
rport->supported_classes = 0;
+ tgt->target_id = rport->scsi_target_id;
if (tgt->service_parms.class1_parms[0] & 0x80000000)
rport->supported_classes |= FC_COS_CLASS1;
if (tgt->service_parms.class2_parms[0] & 0x80000000)
rport->supported_classes |= FC_COS_CLASS2;
if (tgt->service_parms.class3_parms[0] & 0x80000000)
rport->supported_classes |= FC_COS_CLASS3;
+ if (rport->rqst_q)
+ blk_queue_max_segments(rport->rqst_q, 1);
} else
tgt_dbg(tgt, "rport add failed\n");
spin_unlock_irqrestore(vhost->host->host_lock, flags);
vhost->events_to_log = 0;
switch (vhost->action) {
case IBMVFC_HOST_ACTION_NONE:
+ case IBMVFC_HOST_ACTION_LOGO_WAIT:
case IBMVFC_HOST_ACTION_INIT_WAIT:
break;
+ case IBMVFC_HOST_ACTION_LOGO:
+ vhost->job_step(vhost);
+ break;
case IBMVFC_HOST_ACTION_INIT:
BUG_ON(vhost->state != IBMVFC_INITIALIZING);
- vhost->job_step(vhost);
+ if (vhost->delay_init) {
+ vhost->delay_init = 0;
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ ssleep(15);
+ return;
+ } else
+ vhost->job_step(vhost);
break;
case IBMVFC_HOST_ACTION_QUERY:
list_for_each_entry(tgt, &vhost->targets, queue)
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL);
break;
case IBMVFC_HOST_ACTION_TGT_DEL:
+ case IBMVFC_HOST_ACTION_TGT_DEL_FAILED:
list_for_each_entry(tgt, &vhost->targets, queue) {
if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) {
tgt_dbg(tgt, "Deleting rport\n");
spin_unlock_irqrestore(vhost->host->host_lock, flags);
if (rport)
fc_remote_port_delete(rport);
+ del_timer_sync(&tgt->timer);
kref_put(&tgt->kref, ibmvfc_release_tgt);
return;
}
}
if (vhost->state == IBMVFC_INITIALIZING) {
- ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT);
- vhost->job_step = ibmvfc_discover_targets;
+ if (vhost->action == IBMVFC_HOST_ACTION_TGT_DEL_FAILED) {
+ if (vhost->reinit) {
+ vhost->reinit = 0;
+ scsi_block_requests(vhost->host);
+ ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ } else {
+ ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE);
+ ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
+ wake_up(&vhost->init_wait_q);
+ schedule_work(&vhost->rport_add_work_q);
+ vhost->init_retries = 0;
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ scsi_unblock_requests(vhost->host);
+ }
+
+ return;
+ } else {
+ ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT);
+ vhost->job_step = ibmvfc_discover_targets;
+ }
} else {
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
spin_unlock_irqrestore(vhost->host->host_lock, flags);
}
}
- if (!ibmvfc_dev_init_to_do(vhost)) {
- ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE);
- ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_ADD);
- vhost->init_retries = 0;
- spin_unlock_irqrestore(vhost->host->host_lock, flags);
- scsi_unblock_requests(vhost->host);
- return;
- }
- break;
- case IBMVFC_HOST_ACTION_TGT_ADD:
- list_for_each_entry(tgt, &vhost->targets, queue) {
- if (tgt->action == IBMVFC_TGT_ACTION_ADD_RPORT) {
- spin_unlock_irqrestore(vhost->host->host_lock, flags);
- ibmvfc_tgt_add_rport(tgt);
- return;
- } else if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) {
- tgt_dbg(tgt, "Deleting rport\n");
- rport = tgt->rport;
- tgt->rport = NULL;
- list_del(&tgt->queue);
- spin_unlock_irqrestore(vhost->host->host_lock, flags);
- if (rport)
- fc_remote_port_delete(rport);
- kref_put(&tgt->kref, ibmvfc_release_tgt);
- return;
- }
- }
-
- if (vhost->reinit) {
- vhost->reinit = 0;
- ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY);
- } else {
- ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
- wake_up(&vhost->init_wait_q);
- }
+ if (!ibmvfc_dev_init_to_do(vhost))
+ ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL_FAILED);
break;
default:
break;
crq->msg_token = dma_map_single(dev, crq->msgs,
PAGE_SIZE, DMA_BIDIRECTIONAL);
- if (dma_mapping_error(crq->msg_token))
+ if (dma_mapping_error(dev, crq->msg_token))
goto map_failed;
retrc = rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
retrc = 0;
+ tasklet_init(&vhost->tasklet, (void *)ibmvfc_tasklet, (unsigned long)vhost);
+
if ((rc = request_irq(vdev->irq, ibmvfc_interrupt, 0, IBMVFC_NAME, vhost))) {
dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", vdev->irq, rc);
goto req_irq_failed;
return retrc;
req_irq_failed:
+ tasklet_kill(&vhost->tasklet);
do {
rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
async_q->size * sizeof(*async_q->msgs),
DMA_BIDIRECTIONAL);
- if (dma_mapping_error(async_q->msg_token)) {
+ if (dma_mapping_error(dev, async_q->msg_token)) {
dev_err(dev, "Failed to map async queue\n");
goto free_async_crq;
}
if (!vhost->trace)
goto free_disc_buffer;
- vhost->tgt_pool = mempool_create_kzalloc_pool(IBMVFC_TGT_MEMPOOL_SZ,
+ vhost->tgt_pool = mempool_create_kmalloc_pool(IBMVFC_TGT_MEMPOOL_SZ,
sizeof(struct ibmvfc_target));
if (!vhost->tgt_pool) {
}
/**
+ * ibmvfc_rport_add_thread - Worker thread for rport adds
+ * @work: work struct
+ *
+ **/
+static void ibmvfc_rport_add_thread(struct work_struct *work)
+{
+ struct ibmvfc_host *vhost = container_of(work, struct ibmvfc_host,
+ rport_add_work_q);
+ struct ibmvfc_target *tgt;
+ struct fc_rport *rport;
+ unsigned long flags;
+ int did_work;
+
+ ENTER;
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ do {
+ did_work = 0;
+ if (vhost->state != IBMVFC_ACTIVE)
+ break;
+
+ list_for_each_entry(tgt, &vhost->targets, queue) {
+ if (tgt->add_rport) {
+ did_work = 1;
+ tgt->add_rport = 0;
+ kref_get(&tgt->kref);
+ rport = tgt->rport;
+ if (!rport) {
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ ibmvfc_tgt_add_rport(tgt);
+ } else if (get_device(&rport->dev)) {
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ tgt_dbg(tgt, "Setting rport roles\n");
+ fc_remote_port_rolechg(rport, tgt->ids.roles);
+ put_device(&rport->dev);
+ }
+
+ kref_put(&tgt->kref, ibmvfc_release_tgt);
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ break;
+ }
+ }
+ } while(did_work);
+
+ if (vhost->state == IBMVFC_ACTIVE)
+ vhost->scan_complete = 1;
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ LEAVE;
+}
+
+/**
* ibmvfc_probe - Adapter hot plug add entry point
* @vdev: vio device struct
* @id: vio device id struct
vhost->dev = dev;
vhost->partition_number = -1;
vhost->log_level = log_level;
+ vhost->task_set = 1;
strcpy(vhost->partition_name, "UNKNOWN");
init_waitqueue_head(&vhost->work_wait_q);
init_waitqueue_head(&vhost->init_wait_q);
+ INIT_WORK(&vhost->rport_add_work_q, ibmvfc_rport_add_thread);
+ mutex_init(&vhost->passthru_mutex);
if ((rc = ibmvfc_alloc_mem(vhost)))
goto free_scsi_host;
goto remove_shost;
}
+ if (shost_to_fc_host(shost)->rqst_q)
+ blk_queue_max_segments(shost_to_fc_host(shost)->rqst_q, 1);
dev_set_drvdata(dev, vhost);
spin_lock(&ibmvfc_driver_lock);
list_add_tail(&vhost->queue, &ibmvfc_head);
ENTER;
ibmvfc_remove_trace_file(&vhost->host->shost_dev.kobj, &ibmvfc_trace_attr);
+
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+
+ ibmvfc_wait_while_resetting(vhost);
+ ibmvfc_release_crq_queue(vhost);
kthread_stop(vhost->work_thread);
fc_remove_host(vhost->host);
scsi_remove_host(vhost->host);
- ibmvfc_release_crq_queue(vhost);
spin_lock_irqsave(vhost->host->host_lock, flags);
ibmvfc_purge_requests(vhost, DID_ERROR);
}
/**
+ * ibmvfc_resume - Resume from suspend
+ * @dev: device struct
+ *
+ * We may have lost an interrupt across suspend/resume, so kick the
+ * interrupt handler
+ *
+ */
+static int ibmvfc_resume(struct device *dev)
+{
+ unsigned long flags;
+ struct ibmvfc_host *vhost = dev_get_drvdata(dev);
+ struct vio_dev *vdev = to_vio_dev(dev);
+
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ vio_disable_interrupts(vdev);
+ tasklet_schedule(&vhost->tasklet);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ return 0;
+}
+
+/**
* ibmvfc_get_desired_dma - Calculate DMA resources needed by the driver
* @vdev: vio device struct
*
};
MODULE_DEVICE_TABLE(vio, ibmvfc_device_table);
+static struct dev_pm_ops ibmvfc_pm_ops = {
+ .resume = ibmvfc_resume
+};
+
static struct vio_driver ibmvfc_driver = {
.id_table = ibmvfc_device_table,
.probe = ibmvfc_probe,
.driver = {
.name = IBMVFC_NAME,
.owner = THIS_MODULE,
+ .pm = &ibmvfc_pm_ops,
}
};
.show_host_supported_classes = 1,
.show_host_port_type = 1,
.show_host_port_id = 1,
+ .show_host_maxframe_size = 1,
.get_host_port_state = ibmvfc_get_host_port_state,
.show_host_port_state = 1,
.get_starget_port_id = ibmvfc_get_starget_port_id,
.show_starget_port_id = 1,
+
+ .bsg_request = ibmvfc_bsg_request,
+ .bsg_timeout = ibmvfc_bsg_timeout,
};
/**
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff