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-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.c434
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.h40
-rw-r--r--drivers/scsi/ibmvscsi/ibmvscsi.c463
-rw-r--r--drivers/scsi/ibmvscsi/ibmvscsi.h4
-rw-r--r--drivers/scsi/ibmvscsi/viosrp.h68
5 files changed, 754 insertions, 255 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index ea4abee7a2a9..b4b805e8d7db 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -110,7 +110,7 @@ static const struct {
{ 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" },
@@ -143,6 +143,7 @@ static void ibmvfc_npiv_login(struct ibmvfc_host *);
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";
@@ -275,7 +276,7 @@ static int ibmvfc_get_err_result(struct ibmvfc_cmd *vfc_cmd)
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;
@@ -431,6 +432,8 @@ static void ibmvfc_set_tgt_action(struct ibmvfc_target *tgt,
case IBMVFC_TGT_ACTION_DEL_RPORT:
break;
default:
+ if (action == IBMVFC_TGT_ACTION_DEL_RPORT)
+ tgt->add_rport = 0;
tgt->action = action;
break;
}
@@ -475,6 +478,10 @@ static void ibmvfc_set_host_action(struct ibmvfc_host *vhost,
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;
@@ -483,7 +490,7 @@ static void ibmvfc_set_host_action(struct ibmvfc_host *vhost,
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:
@@ -494,11 +501,11 @@ static void ibmvfc_set_host_action(struct ibmvfc_host *vhost,
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_DEL_FAILED:
- case IBMVFC_HOST_ACTION_TGT_ADD:
case IBMVFC_HOST_ACTION_NONE:
default:
vhost->action = action;
@@ -576,7 +583,7 @@ static void ibmvfc_init_host(struct ibmvfc_host *vhost, int relogin)
}
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;
@@ -646,6 +653,7 @@ static void ibmvfc_release_crq_queue(struct ibmvfc_host *vhost)
} 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);
}
@@ -692,6 +700,7 @@ static int ibmvfc_reset_crq(struct ibmvfc_host *vhost)
} 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 */
@@ -807,10 +816,10 @@ static void ibmvfc_purge_requests(struct ibmvfc_host *vhost, int error_code)
}
/**
- * __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;
@@ -826,9 +835,25 @@ static void __ibmvfc_reset_host(struct ibmvfc_host *vhost)
}
/**
- * 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;
@@ -842,9 +867,13 @@ static void ibmvfc_reset_host(struct ibmvfc_host *vhost)
* 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) {
vhost->delay_init = 1;
if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) {
@@ -853,11 +882,14 @@ static void ibmvfc_retry_host_init(struct ibmvfc_host *vhost)
ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE);
} 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;
}
/**
@@ -1137,8 +1169,9 @@ static void ibmvfc_set_login_info(struct ibmvfc_host *vhost)
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;
@@ -1452,6 +1485,27 @@ static void ibmvfc_log_error(struct ibmvfc_event *evt)
}
/**
+ * 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
*
@@ -1483,7 +1537,7 @@ static void ibmvfc_scsi_done(struct ibmvfc_event *evt)
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_reinit_host(evt->vhost);
+ ibmvfc_relogin(cmnd->device);
if (!cmnd->result && (!scsi_get_resid(cmnd) || (rsp->flags & FCP_RESID_OVER)))
cmnd->result = (DID_ERROR << 16);
@@ -2148,13 +2202,31 @@ static void ibmvfc_handle_async(struct ibmvfc_async_crq *crq,
struct ibmvfc_host *vhost)
{
const char *desc = ibmvfc_get_ae_desc(crq->event);
+ struct ibmvfc_target *tgt;
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;
vhost->delay_init = 1;
__ibmvfc_reset_host(vhost);
@@ -2168,9 +2240,23 @@ static void ibmvfc_handle_async(struct ibmvfc_async_crq *crq,
case IBMVFC_AE_SCN_NPORT:
case IBMVFC_AE_SCN_GROUP:
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:
+ 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;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
+ }
+
ibmvfc_reinit_host(vhost);
break;
case IBMVFC_AE_LINK_DOWN:
@@ -2222,6 +2308,7 @@ static void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost)
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 */
@@ -2299,7 +2386,7 @@ static int ibmvfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
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;
@@ -2434,14 +2521,6 @@ static ssize_t ibmvfc_show_host_partition_name(struct device *dev,
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)
{
@@ -2452,14 +2531,6 @@ static ssize_t ibmvfc_show_host_device_name(struct device *dev,
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)
{
@@ -2470,14 +2541,6 @@ static ssize_t ibmvfc_show_host_loc_code(struct device *dev,
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)
{
@@ -2488,14 +2551,6 @@ static ssize_t ibmvfc_show_host_drc_name(struct device *dev,
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)
{
@@ -2504,13 +2559,13 @@ static ssize_t ibmvfc_show_host_npiv_version(struct device *dev,
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
@@ -2556,14 +2611,14 @@ static ssize_t ibmvfc_store_log_level(struct device *dev,
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
/**
@@ -2612,12 +2667,13 @@ static struct bin_attribute ibmvfc_trace_attr = {
#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
};
@@ -2774,15 +2830,19 @@ static void ibmvfc_init_tgt(struct ibmvfc_target *tgt,
* @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_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 */
@@ -2831,7 +2891,7 @@ static void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt)
struct ibmvfc_process_login *rsp = &evt->xfer_iu->prli;
struct ibmvfc_prli_svc_parms *parms = &rsp->parms;
u32 status = rsp->common.status;
- int index;
+ int index, level = IBMVFC_DEFAULT_LOG_LEVEL;
vhost->discovery_threads--;
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
@@ -2850,7 +2910,7 @@ static void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt)
tgt->ids.roles |= FC_PORT_ROLE_FCP_TARGET;
if (parms->service_parms & IBMVFC_PRLI_INITIATOR_FUNC)
tgt->ids.roles |= FC_PORT_ROLE_FCP_INITIATOR;
- ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_ADD_RPORT);
+ tgt->add_rport = 1;
} else
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
} else if (prli_rsp[index].retry)
@@ -2867,13 +2927,14 @@ static void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt)
break;
case IBMVFC_MAD_FAILED:
default:
- tgt_err(tgt, "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);
+ 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);
break;
};
@@ -2932,6 +2993,7 @@ static void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt)
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);
@@ -2960,15 +3022,15 @@ static void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt)
break;
case IBMVFC_MAD_FAILED:
default:
- tgt_err(tgt, "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);
+ 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);
break;
};
@@ -3129,13 +3191,13 @@ static void ibmvfc_tgt_adisc_done(struct ibmvfc_event *evt)
case IBMVFC_MAD_SUCCESS:
tgt_dbg(tgt, "ADISC succeeded\n");
if (ibmvfc_adisc_needs_plogi(mad, tgt))
- tgt->need_login = 1;
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
break;
case IBMVFC_MAD_DRIVER_FAILED:
break;
case IBMVFC_MAD_FAILED:
default:
- tgt->need_login = 1;
+ 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",
@@ -3322,6 +3384,7 @@ static void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt)
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);
@@ -3341,19 +3404,19 @@ static void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt)
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;
};
@@ -3420,7 +3483,7 @@ static int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id)
}
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 %08llx\n",
scsi_id);
@@ -3472,6 +3535,7 @@ static void ibmvfc_discover_targets_done(struct ibmvfc_event *evt)
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:
@@ -3480,9 +3544,9 @@ static void ibmvfc_discover_targets_done(struct ibmvfc_event *evt)
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;
@@ -3534,18 +3598,19 @@ static void ibmvfc_npiv_login_done(struct ibmvfc_event *evt)
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:
@@ -3578,6 +3643,7 @@ static void ibmvfc_npiv_login_done(struct ibmvfc_event *evt)
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,
@@ -3636,6 +3702,65 @@ static void ibmvfc_npiv_login(struct ibmvfc_host *vhost)
};
/**
+ * 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, 0);
+ 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
*
@@ -3671,6 +3796,7 @@ static int __ibmvfc_work_to_do(struct ibmvfc_host *vhost)
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:
@@ -3683,9 +3809,9 @@ static int __ibmvfc_work_to_do(struct ibmvfc_host *vhost)
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:
@@ -3740,25 +3866,26 @@ static void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events)
static void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt)
{
struct ibmvfc_host *vhost = tgt->vhost;
- struct fc_rport *rport = tgt->rport;
+ struct fc_rport *rport;
unsigned long flags;
- if (rport) {
- tgt_dbg(tgt, "Setting rport roles\n");
- fc_remote_port_rolechg(rport, tgt->ids.roles);
- spin_lock_irqsave(vhost->host->host_lock, flags);
- ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
+ tgt_dbg(tgt, "Adding rport\n");
+ rport = fc_remote_port_add(vhost->host, 0, &tgt->ids);
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+
+ 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;
}
- 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_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;
@@ -3789,8 +3916,12 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
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);
if (vhost->delay_init) {
@@ -3836,11 +3967,21 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
if (vhost->state == IBMVFC_INITIALIZING) {
if (vhost->action == IBMVFC_HOST_ACTION_TGT_DEL_FAILED) {
- 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);
+ 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);
@@ -3871,24 +4012,6 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
if (!ibmvfc_dev_init_to_do(vhost))
ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL_FAILED);
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;
- }
- }
-
- if (vhost->reinit && !ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) {
- vhost->reinit = 0;
- scsi_block_requests(vhost->host);
- 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);
- }
- break;
default:
break;
};
@@ -4118,6 +4241,56 @@ nomem:
}
/**
+ * 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
@@ -4160,6 +4333,7 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
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);
if ((rc = ibmvfc_alloc_mem(vhost)))
goto free_scsi_host;
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
index ca1dcf7a7568..c2668d7d67f5 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.h
+++ b/drivers/scsi/ibmvscsi/ibmvfc.h
@@ -29,8 +29,8 @@
#include "viosrp.h"
#define IBMVFC_NAME "ibmvfc"
-#define IBMVFC_DRIVER_VERSION "1.0.5"
-#define IBMVFC_DRIVER_DATE "(March 19, 2009)"
+#define IBMVFC_DRIVER_VERSION "1.0.6"
+#define IBMVFC_DRIVER_DATE "(May 28, 2009)"
#define IBMVFC_DEFAULT_TIMEOUT 60
#define IBMVFC_ADISC_CANCEL_TIMEOUT 45
@@ -57,9 +57,10 @@
* Ensure we have resources for ERP and initialization:
* 1 for ERP
* 1 for initialization
+ * 1 for NPIV Logout
* 2 for each discovery thread
*/
-#define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + (disc_threads * 2))
+#define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + (disc_threads * 2))
#define IBMVFC_MAD_SUCCESS 0x00
#define IBMVFC_MAD_NOT_SUPPORTED 0xF1
@@ -127,6 +128,7 @@ enum ibmvfc_mad_types {
IBMVFC_IMPLICIT_LOGOUT = 0x0040,
IBMVFC_PASSTHRU = 0x0200,
IBMVFC_TMF_MAD = 0x0100,
+ IBMVFC_NPIV_LOGOUT = 0x0800,
};
struct ibmvfc_mad_common {
@@ -143,6 +145,10 @@ struct ibmvfc_npiv_login_mad {
struct srp_direct_buf buffer;
}__attribute__((packed, aligned (8)));
+struct ibmvfc_npiv_logout_mad {
+ struct ibmvfc_mad_common common;
+}__attribute__((packed, aligned (8)));
+
#define IBMVFC_MAX_NAME 256
struct ibmvfc_npiv_login {
@@ -201,7 +207,8 @@ struct ibmvfc_npiv_login_resp {
#define IBMVFC_NATIVE_FC 0x01
#define IBMVFC_CAN_FLUSH_ON_HALT 0x08
u32 reserved;
- u64 capabilites;
+ u64 capabilities;
+#define IBMVFC_CAN_FLUSH_ON_HALT 0x08
u32 max_cmds;
u32 scsi_id_sz;
u64 max_dma_len;
@@ -541,9 +548,17 @@ struct ibmvfc_crq_queue {
dma_addr_t msg_token;
};
+enum ibmvfc_ae_link_state {
+ IBMVFC_AE_LS_LINK_UP = 0x01,
+ IBMVFC_AE_LS_LINK_BOUNCED = 0x02,
+ IBMVFC_AE_LS_LINK_DOWN = 0x04,
+ IBMVFC_AE_LS_LINK_DEAD = 0x08,
+};
+
struct ibmvfc_async_crq {
volatile u8 valid;
- u8 pad[3];
+ u8 link_state;
+ u8 pad[2];
u32 pad2;
volatile u64 event;
volatile u64 scsi_id;
@@ -561,6 +576,7 @@ struct ibmvfc_async_crq_queue {
union ibmvfc_iu {
struct ibmvfc_mad_common mad_common;
struct ibmvfc_npiv_login_mad npiv_login;
+ struct ibmvfc_npiv_logout_mad npiv_logout;
struct ibmvfc_discover_targets discover_targets;
struct ibmvfc_port_login plogi;
struct ibmvfc_process_login prli;
@@ -575,7 +591,6 @@ enum ibmvfc_target_action {
IBMVFC_TGT_ACTION_NONE = 0,
IBMVFC_TGT_ACTION_INIT,
IBMVFC_TGT_ACTION_INIT_WAIT,
- IBMVFC_TGT_ACTION_ADD_RPORT,
IBMVFC_TGT_ACTION_DEL_RPORT,
};
@@ -588,6 +603,7 @@ struct ibmvfc_target {
int target_id;
enum ibmvfc_target_action action;
int need_login;
+ int add_rport;
int init_retries;
u32 cancel_key;
struct ibmvfc_service_parms service_parms;
@@ -627,6 +643,8 @@ struct ibmvfc_event_pool {
enum ibmvfc_host_action {
IBMVFC_HOST_ACTION_NONE = 0,
+ IBMVFC_HOST_ACTION_LOGO,
+ IBMVFC_HOST_ACTION_LOGO_WAIT,
IBMVFC_HOST_ACTION_INIT,
IBMVFC_HOST_ACTION_INIT_WAIT,
IBMVFC_HOST_ACTION_QUERY,
@@ -635,7 +653,6 @@ enum ibmvfc_host_action {
IBMVFC_HOST_ACTION_ALLOC_TGTS,
IBMVFC_HOST_ACTION_TGT_INIT,
IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
- IBMVFC_HOST_ACTION_TGT_ADD,
};
enum ibmvfc_host_state {
@@ -682,6 +699,8 @@ struct ibmvfc_host {
int client_migrated;
int reinit;
int delay_init;
+ int scan_complete;
+ int logged_in;
int events_to_log;
#define IBMVFC_AE_LINKUP 0x0001
#define IBMVFC_AE_LINKDOWN 0x0002
@@ -692,6 +711,7 @@ struct ibmvfc_host {
void (*job_step) (struct ibmvfc_host *);
struct task_struct *work_thread;
struct tasklet_struct tasklet;
+ struct work_struct rport_add_work_q;
wait_queue_head_t init_wait_q;
wait_queue_head_t work_wait_q;
};
@@ -707,6 +727,12 @@ struct ibmvfc_host {
#define tgt_err(t, fmt, ...) \
dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
+#define tgt_log(t, level, fmt, ...) \
+ do { \
+ if ((t)->vhost->log_level >= level) \
+ tgt_err(t, fmt, ##__VA_ARGS__); \
+ } while (0)
+
#define ibmvfc_dbg(vhost, ...) \
DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index c9aa7611e408..11d2602ae88e 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -70,6 +70,7 @@
#include <linux/moduleparam.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
+#include <linux/of.h>
#include <asm/firmware.h>
#include <asm/vio.h>
#include <asm/firmware.h>
@@ -87,9 +88,15 @@
*/
static int max_id = 64;
static int max_channel = 3;
-static int init_timeout = 5;
+static int init_timeout = 300;
+static int login_timeout = 60;
+static int info_timeout = 30;
+static int abort_timeout = 60;
+static int reset_timeout = 60;
static int max_requests = IBMVSCSI_MAX_REQUESTS_DEFAULT;
static int max_events = IBMVSCSI_MAX_REQUESTS_DEFAULT + 2;
+static int fast_fail = 1;
+static int client_reserve = 1;
static struct scsi_transport_template *ibmvscsi_transport_template;
@@ -110,6 +117,10 @@ module_param_named(init_timeout, init_timeout, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(init_timeout, "Initialization timeout in seconds");
module_param_named(max_requests, max_requests, int, S_IRUGO);
MODULE_PARM_DESC(max_requests, "Maximum requests for this adapter");
+module_param_named(fast_fail, fast_fail, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(fast_fail, "Enable fast fail. [Default=1]");
+module_param_named(client_reserve, client_reserve, int, S_IRUGO );
+MODULE_PARM_DESC(client_reserve, "Attempt client managed reserve/release");
/* ------------------------------------------------------------
* Routines for the event pool and event structs
@@ -781,105 +792,53 @@ static int ibmvscsi_queuecommand(struct scsi_cmnd *cmnd,
/* ------------------------------------------------------------
* Routines for driver initialization
*/
+
/**
- * adapter_info_rsp: - Handle response to MAD adapter info request
- * @evt_struct: srp_event_struct with the response
+ * map_persist_bufs: - Pre-map persistent data for adapter logins
+ * @hostdata: ibmvscsi_host_data of host
*
- * Used as a "done" callback by when sending adapter_info. Gets called
- * by ibmvscsi_handle_crq()
-*/
-static void adapter_info_rsp(struct srp_event_struct *evt_struct)
+ * Map the capabilities and adapter info DMA buffers to avoid runtime failures.
+ * Return 1 on error, 0 on success.
+ */
+static int map_persist_bufs(struct ibmvscsi_host_data *hostdata)
{
- struct ibmvscsi_host_data *hostdata = evt_struct->hostdata;
- dma_unmap_single(hostdata->dev,
- evt_struct->iu.mad.adapter_info.buffer,
- evt_struct->iu.mad.adapter_info.common.length,
- DMA_BIDIRECTIONAL);
- if (evt_struct->xfer_iu->mad.adapter_info.common.status) {
- dev_err(hostdata->dev, "error %d getting adapter info\n",
- evt_struct->xfer_iu->mad.adapter_info.common.status);
- } else {
- dev_info(hostdata->dev, "host srp version: %s, "
- "host partition %s (%d), OS %d, max io %u\n",
- hostdata->madapter_info.srp_version,
- hostdata->madapter_info.partition_name,
- hostdata->madapter_info.partition_number,
- hostdata->madapter_info.os_type,
- hostdata->madapter_info.port_max_txu[0]);
-
- if (hostdata->madapter_info.port_max_txu[0])
- hostdata->host->max_sectors =
- hostdata->madapter_info.port_max_txu[0] >> 9;
-
- if (hostdata->madapter_info.os_type == 3 &&
- strcmp(hostdata->madapter_info.srp_version, "1.6a") <= 0) {
- dev_err(hostdata->dev, "host (Ver. %s) doesn't support large transfers\n",
- hostdata->madapter_info.srp_version);
- dev_err(hostdata->dev, "limiting scatterlists to %d\n",
- MAX_INDIRECT_BUFS);
- hostdata->host->sg_tablesize = MAX_INDIRECT_BUFS;
- }
+ hostdata->caps_addr = dma_map_single(hostdata->dev, &hostdata->caps,
+ sizeof(hostdata->caps), DMA_BIDIRECTIONAL);
+
+ if (dma_mapping_error(hostdata->dev, hostdata->caps_addr)) {
+ dev_err(hostdata->dev, "Unable to map capabilities buffer!\n");
+ return 1;
}
+
+ hostdata->adapter_info_addr = dma_map_single(hostdata->dev,
+ &hostdata->madapter_info,
+ sizeof(hostdata->madapter_info),
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(hostdata->dev, hostdata->adapter_info_addr)) {
+ dev_err(hostdata->dev, "Unable to map adapter info buffer!\n");
+ dma_unmap_single(hostdata->dev, hostdata->caps_addr,
+ sizeof(hostdata->caps), DMA_BIDIRECTIONAL);
+ return 1;
+ }
+
+ return 0;
}
/**
- * send_mad_adapter_info: - Sends the mad adapter info request
- * and stores the result so it can be retrieved with
- * sysfs. We COULD consider causing a failure if the
- * returned SRP version doesn't match ours.
- * @hostdata: ibmvscsi_host_data of host
- *
- * Returns zero if successful.
-*/
-static void send_mad_adapter_info(struct ibmvscsi_host_data *hostdata)
+ * unmap_persist_bufs: - Unmap persistent data needed for adapter logins
+ * @hostdata: ibmvscsi_host_data of host
+ *
+ * Unmap the capabilities and adapter info DMA buffers
+ */
+static void unmap_persist_bufs(struct ibmvscsi_host_data *hostdata)
{
- struct viosrp_adapter_info *req;
- struct srp_event_struct *evt_struct;
- unsigned long flags;
- dma_addr_t addr;
-
- evt_struct = get_event_struct(&hostdata->pool);
- if (!evt_struct) {
- dev_err(hostdata->dev,
- "couldn't allocate an event for ADAPTER_INFO_REQ!\n");
- return;
- }
-
- init_event_struct(evt_struct,
- adapter_info_rsp,
- VIOSRP_MAD_FORMAT,
- init_timeout);
-
- req = &evt_struct->iu.mad.adapter_info;
- memset(req, 0x00, sizeof(*req));
-
- req->common.type = VIOSRP_ADAPTER_INFO_TYPE;
- req->common.length = sizeof(hostdata->madapter_info);
- req->buffer = addr = dma_map_single(hostdata->dev,
- &hostdata->madapter_info,
- sizeof(hostdata->madapter_info),
- DMA_BIDIRECTIONAL);
+ dma_unmap_single(hostdata->dev, hostdata->caps_addr,
+ sizeof(hostdata->caps), DMA_BIDIRECTIONAL);
- if (dma_mapping_error(hostdata->dev, req->buffer)) {
- if (!firmware_has_feature(FW_FEATURE_CMO))
- dev_err(hostdata->dev,
- "Unable to map request_buffer for "
- "adapter_info!\n");
- free_event_struct(&hostdata->pool, evt_struct);
- return;
- }
-
- spin_lock_irqsave(hostdata->host->host_lock, flags);
- if (ibmvscsi_send_srp_event(evt_struct, hostdata, init_timeout * 2)) {
- dev_err(hostdata->dev, "couldn't send ADAPTER_INFO_REQ!\n");
- dma_unmap_single(hostdata->dev,
- addr,
- sizeof(hostdata->madapter_info),
- DMA_BIDIRECTIONAL);
- }
- spin_unlock_irqrestore(hostdata->host->host_lock, flags);
-};
+ dma_unmap_single(hostdata->dev, hostdata->adapter_info_addr,
+ sizeof(hostdata->madapter_info), DMA_BIDIRECTIONAL);
+}
/**
* login_rsp: - Handle response to SRP login request
@@ -909,9 +868,7 @@ static void login_rsp(struct srp_event_struct *evt_struct)
}
dev_info(hostdata->dev, "SRP_LOGIN succeeded\n");
-
- if (evt_struct->xfer_iu->srp.login_rsp.req_lim_delta < 0)
- dev_err(hostdata->dev, "Invalid request_limit.\n");
+ hostdata->client_migrated = 0;
/* Now we know what the real request-limit is.
* This value is set rather than added to request_limit because
@@ -922,15 +879,12 @@ static void login_rsp(struct srp_event_struct *evt_struct)
/* If we had any pending I/Os, kick them */
scsi_unblock_requests(hostdata->host);
-
- send_mad_adapter_info(hostdata);
- return;
}
/**
* send_srp_login: - Sends the srp login
* @hostdata: ibmvscsi_host_data of host
- *
+ *
* Returns zero if successful.
*/
static int send_srp_login(struct ibmvscsi_host_data *hostdata)
@@ -939,22 +893,17 @@ static int send_srp_login(struct ibmvscsi_host_data *hostdata)
unsigned long flags;
struct srp_login_req *login;
struct srp_event_struct *evt_struct = get_event_struct(&hostdata->pool);
- if (!evt_struct) {
- dev_err(hostdata->dev, "couldn't allocate an event for login req!\n");
- return FAILED;
- }
- init_event_struct(evt_struct,
- login_rsp,
- VIOSRP_SRP_FORMAT,
- init_timeout);
+ BUG_ON(!evt_struct);
+ init_event_struct(evt_struct, login_rsp,
+ VIOSRP_SRP_FORMAT, login_timeout);
login = &evt_struct->iu.srp.login_req;
- memset(login, 0x00, sizeof(struct srp_login_req));
+ memset(login, 0, sizeof(*login));
login->opcode = SRP_LOGIN_REQ;
login->req_it_iu_len = sizeof(union srp_iu);
login->req_buf_fmt = SRP_BUF_FORMAT_DIRECT | SRP_BUF_FORMAT_INDIRECT;
-
+
spin_lock_irqsave(hostdata->host->host_lock, flags);
/* Start out with a request limit of 0, since this is negotiated in
* the login request we are just sending and login requests always
@@ -962,13 +911,241 @@ static int send_srp_login(struct ibmvscsi_host_data *hostdata)
*/
atomic_set(&hostdata->request_limit, 0);
- rc = ibmvscsi_send_srp_event(evt_struct, hostdata, init_timeout * 2);
+ rc = ibmvscsi_send_srp_event(evt_struct, hostdata, login_timeout * 2);
spin_unlock_irqrestore(hostdata->host->host_lock, flags);
dev_info(hostdata->dev, "sent SRP login\n");
return rc;
};
/**
+ * capabilities_rsp: - Handle response to MAD adapter capabilities request
+ * @evt_struct: srp_event_struct with the response
+ *
+ * Used as a "done" callback by when sending adapter_info.
+ */
+static void capabilities_rsp(struct srp_event_struct *evt_struct)
+{
+ struct ibmvscsi_host_data *hostdata = evt_struct->hostdata;
+
+ if (evt_struct->xfer_iu->mad.capabilities.common.status) {
+ dev_err(hostdata->dev, "error 0x%X getting capabilities info\n",
+ evt_struct->xfer_iu->mad.capabilities.common.status);
+ } else {
+ if (hostdata->caps.migration.common.server_support != SERVER_SUPPORTS_CAP)
+ dev_info(hostdata->dev, "Partition migration not supported\n");
+
+ if (client_reserve) {
+ if (hostdata->caps.reserve.common.server_support ==
+ SERVER_SUPPORTS_CAP)
+ dev_info(hostdata->dev, "Client reserve enabled\n");
+ else
+ dev_info(hostdata->dev, "Client reserve not supported\n");
+ }
+ }
+
+ send_srp_login(hostdata);
+}
+
+/**
+ * send_mad_capabilities: - Sends the mad capabilities request
+ * and stores the result so it can be retrieved with
+ * @hostdata: ibmvscsi_host_data of host
+ */
+static void send_mad_capabilities(struct ibmvscsi_host_data *hostdata)
+{
+ struct viosrp_capabilities *req;
+ struct srp_event_struct *evt_struct;
+ unsigned long flags;
+ struct device_node *of_node = hostdata->dev->archdata.of_node;
+ const char *location;
+
+ evt_struct = get_event_struct(&hostdata->pool);
+ BUG_ON(!evt_struct);
+
+ init_event_struct(evt_struct, capabilities_rsp,
+ VIOSRP_MAD_FORMAT, info_timeout);
+
+ req = &evt_struct->iu.mad.capabilities;
+ memset(req, 0, sizeof(*req));
+
+ hostdata->caps.flags = CAP_LIST_SUPPORTED;
+ if (hostdata->client_migrated)
+ hostdata->caps.flags |= CLIENT_MIGRATED;
+
+ strncpy(hostdata->caps.name, dev_name(&hostdata->host->shost_gendev),
+ sizeof(hostdata->caps.name));
+ hostdata->caps.name[sizeof(hostdata->caps.name) - 1] = '\0';
+
+ location = of_get_property(of_node, "ibm,loc-code", NULL);
+ location = location ? location : dev_name(hostdata->dev);
+ strncpy(hostdata->caps.loc, location, sizeof(hostdata->caps.loc));
+ hostdata->caps.loc[sizeof(hostdata->caps.loc) - 1] = '\0';
+
+ req->common.type = VIOSRP_CAPABILITIES_TYPE;
+ req->buffer = hostdata->caps_addr;
+
+ hostdata->caps.migration.common.cap_type = MIGRATION_CAPABILITIES;
+ hostdata->caps.migration.common.length = sizeof(hostdata->caps.migration);
+ hostdata->caps.migration.common.server_support = SERVER_SUPPORTS_CAP;
+ hostdata->caps.migration.ecl = 1;
+
+ if (client_reserve) {
+ hostdata->caps.reserve.common.cap_type = RESERVATION_CAPABILITIES;
+ hostdata->caps.reserve.common.length = sizeof(hostdata->caps.reserve);
+ hostdata->caps.reserve.common.server_support = SERVER_SUPPORTS_CAP;
+ hostdata->caps.reserve.type = CLIENT_RESERVE_SCSI_2;
+ req->common.length = sizeof(hostdata->caps);
+ } else
+ req->common.length = sizeof(hostdata->caps) - sizeof(hostdata->caps.reserve);
+
+ spin_lock_irqsave(hostdata->host->host_lock, flags);
+ if (ibmvscsi_send_srp_event(evt_struct, hostdata, info_timeout * 2))
+ dev_err(hostdata->dev, "couldn't send CAPABILITIES_REQ!\n");
+ spin_unlock_irqrestore(hostdata->host->host_lock, flags);
+};
+
+/**
+ * fast_fail_rsp: - Handle response to MAD enable fast fail
+ * @evt_struct: srp_event_struct with the response
+ *
+ * Used as a "done" callback by when sending enable fast fail. Gets called
+ * by ibmvscsi_handle_crq()
+ */
+static void fast_fail_rsp(struct srp_event_struct *evt_struct)
+{
+ struct ibmvscsi_host_data *hostdata = evt_struct->hostdata;
+ u8 status = evt_struct->xfer_iu->mad.fast_fail.common.status;
+
+ if (status == VIOSRP_MAD_NOT_SUPPORTED)
+ dev_err(hostdata->dev, "fast_fail not supported in server\n");
+ else if (status == VIOSRP_MAD_FAILED)
+ dev_err(hostdata->dev, "fast_fail request failed\n");
+ else if (status != VIOSRP_MAD_SUCCESS)
+ dev_err(hostdata->dev, "error 0x%X enabling fast_fail\n", status);
+
+ send_mad_capabilities(hostdata);
+}
+
+/**
+ * init_host - Start host initialization
+ * @hostdata: ibmvscsi_host_data of host
+ *
+ * Returns zero if successful.
+ */
+static int enable_fast_fail(struct ibmvscsi_host_data *hostdata)
+{
+ int rc;
+ unsigned long flags;
+ struct viosrp_fast_fail *fast_fail_mad;
+ struct srp_event_struct *evt_struct;
+
+ if (!fast_fail) {
+ send_mad_capabilities(hostdata);
+ return 0;
+ }
+
+ evt_struct = get_event_struct(&hostdata->pool);
+ BUG_ON(!evt_struct);
+
+ init_event_struct(evt_struct, fast_fail_rsp, VIOSRP_MAD_FORMAT, info_timeout);
+
+ fast_fail_mad = &evt_struct->iu.mad.fast_fail;
+ memset(fast_fail_mad, 0, sizeof(*fast_fail_mad));
+ fast_fail_mad->common.type = VIOSRP_ENABLE_FAST_FAIL;
+ fast_fail_mad->common.length = sizeof(*fast_fail_mad);
+
+ spin_lock_irqsave(hostdata->host->host_lock, flags);
+ rc = ibmvscsi_send_srp_event(evt_struct, hostdata, info_timeout * 2);
+ spin_unlock_irqrestore(hostdata->host->host_lock, flags);
+ return rc;
+}
+
+/**
+ * adapter_info_rsp: - Handle response to MAD adapter info request
+ * @evt_struct: srp_event_struct with the response
+ *
+ * Used as a "done" callback by when sending adapter_info. Gets called
+ * by ibmvscsi_handle_crq()
+*/
+static void adapter_info_rsp(struct srp_event_struct *evt_struct)
+{
+ struct ibmvscsi_host_data *hostdata = evt_struct->hostdata;
+
+ if (evt_struct->xfer_iu->mad.adapter_info.common.status) {
+ dev_err(hostdata->dev, "error %d getting adapter info\n",
+ evt_struct->xfer_iu->mad.adapter_info.common.status);
+ } else {
+ dev_info(hostdata->dev, "host srp version: %s, "
+ "host partition %s (%d), OS %d, max io %u\n",
+ hostdata->madapter_info.srp_version,
+ hostdata->madapter_info.partition_name,
+ hostdata->madapter_info.partition_number,
+ hostdata->madapter_info.os_type,
+ hostdata->madapter_info.port_max_txu[0]);
+
+ if (hostdata->madapter_info.port_max_txu[0])
+ hostdata->host->max_sectors =
+ hostdata->madapter_info.port_max_txu[0] >> 9;
+
+ if (hostdata->madapter_info.os_type == 3 &&
+ strcmp(hostdata->madapter_info.srp_version, "1.6a") <= 0) {
+ dev_err(hostdata->dev, "host (Ver. %s) doesn't support large transfers\n",
+ hostdata->madapter_info.srp_version);
+ dev_err(hostdata->dev, "limiting scatterlists to %d\n",
+ MAX_INDIRECT_BUFS);
+ hostdata->host->sg_tablesize = MAX_INDIRECT_BUFS;
+ }
+ }
+
+ enable_fast_fail(hostdata);
+}
+
+/**
+ * send_mad_adapter_info: - Sends the mad adapter info request
+ * and stores the result so it can be retrieved with
+ * sysfs. We COULD consider causing a failure if the
+ * returned SRP version doesn't match ours.
+ * @hostdata: ibmvscsi_host_data of host
+ *
+ * Returns zero if successful.
+*/
+static void send_mad_adapter_info(struct ibmvscsi_host_data *hostdata)
+{
+ struct viosrp_adapter_info *req;
+ struct srp_event_struct *evt_struct;
+ unsigned long flags;
+
+ evt_struct = get_event_struct(&hostdata->pool);
+ BUG_ON(!evt_struct);
+
+ init_event_struct(evt_struct,
+ adapter_info_rsp,
+ VIOSRP_MAD_FORMAT,
+ info_timeout);
+
+ req = &evt_struct->iu.mad.adapter_info;
+ memset(req, 0x00, sizeof(*req));
+
+ req->common.type = VIOSRP_ADAPTER_INFO_TYPE;
+ req->common.length = sizeof(hostdata->madapter_info);
+ req->buffer = hostdata->adapter_info_addr;
+
+ spin_lock_irqsave(hostdata->host->host_lock, flags);
+ if (ibmvscsi_send_srp_event(evt_struct, hostdata, info_timeout * 2))
+ dev_err(hostdata->dev, "couldn't send ADAPTER_INFO_REQ!\n");
+ spin_unlock_irqrestore(hostdata->host->host_lock, flags);
+};
+
+/**
+ * init_adapter: Start virtual adapter initialization sequence
+ *
+ */
+static void init_adapter(struct ibmvscsi_host_data *hostdata)
+{
+ send_mad_adapter_info(hostdata);
+}
+
+/**
* sync_completion: Signal that a synchronous command has completed
* Note that after returning from this call, the evt_struct is freed.
* the caller waiting on this completion shouldn't touch the evt_struct
@@ -1029,7 +1206,7 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd)
init_event_struct(evt,
sync_completion,
VIOSRP_SRP_FORMAT,
- init_timeout);
+ abort_timeout);
tsk_mgmt = &evt->iu.srp.tsk_mgmt;
@@ -1043,7 +1220,7 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd)
evt->sync_srp = &srp_rsp;
init_completion(&evt->comp);
- rsp_rc = ibmvscsi_send_srp_event(evt, hostdata, init_timeout * 2);
+ rsp_rc = ibmvscsi_send_srp_event(evt, hostdata, abort_timeout * 2);
if (rsp_rc != SCSI_MLQUEUE_HOST_BUSY)
break;
@@ -1152,7 +1329,7 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd)
init_event_struct(evt,
sync_completion,
VIOSRP_SRP_FORMAT,
- init_timeout);
+ reset_timeout);
tsk_mgmt = &evt->iu.srp.tsk_mgmt;
@@ -1165,7 +1342,7 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd)
evt->sync_srp = &srp_rsp;
init_completion(&evt->comp);
- rsp_rc = ibmvscsi_send_srp_event(evt, hostdata, init_timeout * 2);
+ rsp_rc = ibmvscsi_send_srp_event(evt, hostdata, reset_timeout * 2);
if (rsp_rc != SCSI_MLQUEUE_HOST_BUSY)
break;
@@ -1281,7 +1458,7 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq,
if ((rc = ibmvscsi_ops->send_crq(hostdata,
0xC002000000000000LL, 0)) == 0) {
/* Now login */
- send_srp_login(hostdata);
+ init_adapter(hostdata);
} else {
dev_err(hostdata->dev, "Unable to send init rsp. rc=%ld\n", rc);
}
@@ -1291,7 +1468,7 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq,
dev_info(hostdata->dev, "partner initialization complete\n");
/* Now login */
- send_srp_login(hostdata);
+ init_adapter(hostdata);
break;
default:
dev_err(hostdata->dev, "unknown crq message type: %d\n", crq->format);
@@ -1303,6 +1480,7 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq,
if (crq->format == 0x06) {
/* We need to re-setup the interpartition connection */
dev_info(hostdata->dev, "Re-enabling adapter!\n");
+ hostdata->client_migrated = 1;
purge_requests(hostdata, DID_REQUEUE);
if ((ibmvscsi_ops->reenable_crq_queue(&hostdata->queue,
hostdata)) ||
@@ -1397,7 +1575,7 @@ static int ibmvscsi_do_host_config(struct ibmvscsi_host_data *hostdata,
init_event_struct(evt_struct,
sync_completion,
VIOSRP_MAD_FORMAT,
- init_timeout);
+ info_timeout);
host_config = &evt_struct->iu.mad.host_config;
@@ -1419,7 +1597,7 @@ static int ibmvscsi_do_host_config(struct ibmvscsi_host_data *hostdata,
init_completion(&evt_struct->comp);
spin_lock_irqsave(hostdata->host->host_lock, flags);
- rc = ibmvscsi_send_srp_event(evt_struct, hostdata, init_timeout * 2);
+ rc = ibmvscsi_send_srp_event(evt_struct, hostdata, info_timeout * 2);
spin_unlock_irqrestore(hostdata->host->host_lock, flags);
if (rc == 0)
wait_for_completion(&evt_struct->comp);
@@ -1444,7 +1622,7 @@ static int ibmvscsi_slave_configure(struct scsi_device *sdev)
spin_lock_irqsave(shost->host_lock, lock_flags);
if (sdev->type == TYPE_DISK) {
sdev->allow_restart = 1;
- blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
+ blk_queue_rq_timeout(sdev->request_queue, 120 * HZ);
}
scsi_adjust_queue_depth(sdev, 0, shost->cmd_per_lun);
spin_unlock_irqrestore(shost->host_lock, lock_flags);
@@ -1471,6 +1649,46 @@ static int ibmvscsi_change_queue_depth(struct scsi_device *sdev, int qdepth)
/* ------------------------------------------------------------
* sysfs attributes
*/
+static ssize_t show_host_vhost_loc(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct ibmvscsi_host_data *hostdata = shost_priv(shost);
+ int len;
+
+ len = snprintf(buf, sizeof(hostdata->caps.loc), "%s\n",
+ hostdata->caps.loc);
+ return len;
+}
+
+static struct device_attribute ibmvscsi_host_vhost_loc = {
+ .attr = {
+ .name = "vhost_loc",
+ .mode = S_IRUGO,
+ },
+ .show = show_host_vhost_loc,
+};
+
+static ssize_t show_host_vhost_name(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct ibmvscsi_host_data *hostdata = shost_priv(shost);
+ int len;
+
+ len = snprintf(buf, sizeof(hostdata->caps.name), "%s\n",
+ hostdata->caps.name);
+ return len;
+}
+
+static struct device_attribute ibmvscsi_host_vhost_name = {
+ .attr = {
+ .name = "vhost_name",
+ .mode = S_IRUGO,
+ },
+ .show = show_host_vhost_name,
+};
+
static ssize_t show_host_srp_version(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -1594,6 +1812,8 @@ static struct device_attribute ibmvscsi_host_config = {
};
static struct device_attribute *ibmvscsi_attrs[] = {
+ &ibmvscsi_host_vhost_loc,
+ &ibmvscsi_host_vhost_name,
&ibmvscsi_host_srp_version,
&ibmvscsi_host_partition_name,
&ibmvscsi_host_partition_number,
@@ -1674,6 +1894,11 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
atomic_set(&hostdata->request_limit, -1);
hostdata->host->max_sectors = IBMVSCSI_MAX_SECTORS_DEFAULT;
+ if (map_persist_bufs(hostdata)) {
+ dev_err(&vdev->dev, "couldn't map persistent buffers\n");
+ goto persist_bufs_failed;
+ }
+
rc = ibmvscsi_ops->init_crq_queue(&hostdata->queue, hostdata, max_events);
if (rc != 0 && rc != H_RESOURCE) {
dev_err(&vdev->dev, "couldn't initialize crq. rc=%d\n", rc);
@@ -1687,6 +1912,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
host->max_lun = 8;
host->max_id = max_id;
host->max_channel = max_channel;
+ host->max_cmd_len = 16;
if (scsi_add_host(hostdata->host, hostdata->dev))
goto add_host_failed;
@@ -1733,6 +1959,8 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
init_pool_failed:
ibmvscsi_ops->release_crq_queue(&hostdata->queue, hostdata, max_events);
init_crq_failed:
+ unmap_persist_bufs(hostdata);
+ persist_bufs_failed:
scsi_host_put(host);
scsi_host_alloc_failed:
return -1;
@@ -1741,6 +1969,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
static int ibmvscsi_remove(struct vio_dev *vdev)
{
struct ibmvscsi_host_data *hostdata = vdev->dev.driver_data;
+ unmap_persist_bufs(hostdata);
release_event_pool(&hostdata->pool, hostdata);
ibmvscsi_ops->release_crq_queue(&hostdata->queue, hostdata,
max_events);
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.h b/drivers/scsi/ibmvscsi/ibmvscsi.h
index 2d4339d5e16e..76425303def0 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.h
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.h
@@ -90,6 +90,7 @@ struct event_pool {
/* all driver data associated with a host adapter */
struct ibmvscsi_host_data {
atomic_t request_limit;
+ int client_migrated;
struct device *dev;
struct event_pool pool;
struct crq_queue queue;
@@ -97,6 +98,9 @@ struct ibmvscsi_host_data {
struct list_head sent;
struct Scsi_Host *host;
struct mad_adapter_info_data madapter_info;
+ struct capabilities caps;
+ dma_addr_t caps_addr;
+ dma_addr_t adapter_info_addr;
};
/* routines for managing a command/response queue */
diff --git a/drivers/scsi/ibmvscsi/viosrp.h b/drivers/scsi/ibmvscsi/viosrp.h
index 204604501ad8..2cd735d1d196 100644
--- a/drivers/scsi/ibmvscsi/viosrp.h
+++ b/drivers/scsi/ibmvscsi/viosrp.h
@@ -37,6 +37,7 @@
#define SRP_VERSION "16.a"
#define SRP_MAX_IU_LEN 256
+#define SRP_MAX_LOC_LEN 32
union srp_iu {
struct srp_login_req login_req;
@@ -86,7 +87,37 @@ enum viosrp_mad_types {
VIOSRP_EMPTY_IU_TYPE = 0x01,
VIOSRP_ERROR_LOG_TYPE = 0x02,
VIOSRP_ADAPTER_INFO_TYPE = 0x03,
- VIOSRP_HOST_CONFIG_TYPE = 0x04
+ VIOSRP_HOST_CONFIG_TYPE = 0x04,
+ VIOSRP_CAPABILITIES_TYPE = 0x05,
+ VIOSRP_ENABLE_FAST_FAIL = 0x08,
+};
+
+enum viosrp_mad_status {
+ VIOSRP_MAD_SUCCESS = 0x00,
+ VIOSRP_MAD_NOT_SUPPORTED = 0xF1,
+ VIOSRP_MAD_FAILED = 0xF7,
+};
+
+enum viosrp_capability_type {
+ MIGRATION_CAPABILITIES = 0x01,
+ RESERVATION_CAPABILITIES = 0x02,
+};
+
+enum viosrp_capability_support {
+ SERVER_DOES_NOT_SUPPORTS_CAP = 0x0,
+ SERVER_SUPPORTS_CAP = 0x01,
+ SERVER_CAP_DATA = 0x02,
+};
+
+enum viosrp_reserve_type {
+ CLIENT_RESERVE_SCSI_2 = 0x01,
+};
+
+enum viosrp_capability_flag {
+ CLIENT_MIGRATED = 0x01,
+ CLIENT_RECONNECT = 0x02,
+ CAP_LIST_SUPPORTED = 0x04,
+ CAP_LIST_DATA = 0x08,
};
/*
@@ -127,11 +158,46 @@ struct viosrp_host_config {
u64 buffer;
};
+struct viosrp_fast_fail {
+ struct mad_common common;
+};
+
+struct viosrp_capabilities {
+ struct mad_common common;
+ u64 buffer;
+};
+
+struct mad_capability_common {
+ u32 cap_type;
+ u16 length;
+ u16 server_support;
+};
+
+struct mad_reserve_cap {
+ struct mad_capability_common common;
+ u32 type;
+};
+
+struct mad_migration_cap {
+ struct mad_capability_common common;
+ u32 ecl;
+};
+
+struct capabilities{
+ u32 flags;
+ char name[SRP_MAX_LOC_LEN];
+ char loc[SRP_MAX_LOC_LEN];
+ struct mad_migration_cap migration;
+ struct mad_reserve_cap reserve;
+};
+
union mad_iu {
struct viosrp_empty_iu empty_iu;
struct viosrp_error_log error_log;
struct viosrp_adapter_info adapter_info;
struct viosrp_host_config host_config;
+ struct viosrp_fast_fail fast_fail;
+ struct viosrp_capabilities capabilities;
};
union viosrp_iu {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.