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-rw-r--r--drivers/scsi/ibmvscsi/Makefile7
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.c183
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.h9
-rw-r--r--drivers/scsi/ibmvscsi/ibmvscsi.c537
-rw-r--r--drivers/scsi/ibmvscsi/ibmvscsi.h23
-rw-r--r--drivers/scsi/ibmvscsi/ibmvstgt.c9
-rw-r--r--drivers/scsi/ibmvscsi/iseries_vscsi.c173
-rw-r--r--drivers/scsi/ibmvscsi/rpa_vscsi.c368
-rw-r--r--drivers/scsi/ibmvscsi/viosrp.h46
9 files changed, 598 insertions, 757 deletions
diff --git a/drivers/scsi/ibmvscsi/Makefile b/drivers/scsi/ibmvscsi/Makefile
index a423d963362..cb150d1e585 100644
--- a/drivers/scsi/ibmvscsi/Makefile
+++ b/drivers/scsi/ibmvscsi/Makefile
@@ -1,8 +1,3 @@
-obj-$(CONFIG_SCSI_IBMVSCSI) += ibmvscsic.o
-
-ibmvscsic-y += ibmvscsi.o
-ibmvscsic-$(CONFIG_PPC_ISERIES) += iseries_vscsi.o
-ibmvscsic-$(CONFIG_PPC_PSERIES) += rpa_vscsi.o
-
+obj-$(CONFIG_SCSI_IBMVSCSI) += ibmvscsi.o
obj-$(CONFIG_SCSI_IBMVSCSIS) += ibmvstgt.o
obj-$(CONFIG_SCSI_IBMVFC) += ibmvfc.o
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index 00d08b25425..8dd47689d58 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -1606,7 +1606,7 @@ static inline int ibmvfc_host_chkready(struct ibmvfc_host *vhost)
* Returns:
* 0 on success / other on failure
**/
-static int ibmvfc_queuecommand(struct scsi_cmnd *cmnd,
+static int ibmvfc_queuecommand_lck(struct scsi_cmnd *cmnd,
void (*done) (struct scsi_cmnd *))
{
struct ibmvfc_host *vhost = shost_priv(cmnd->device->host);
@@ -1672,6 +1672,8 @@ static int ibmvfc_queuecommand(struct scsi_cmnd *cmnd,
return 0;
}
+static DEF_SCSI_QCMD(ibmvfc_queuecommand)
+
/**
* ibmvfc_sync_completion - Signal that a synchronous command has completed
* @evt: ibmvfc event struct
@@ -2177,7 +2179,7 @@ static int ibmvfc_cancel_all(struct scsi_device *sdev, int type)
return 0;
}
- if (vhost->state == IBMVFC_ACTIVE) {
+ if (vhost->logged_in) {
evt = ibmvfc_get_event(vhost);
ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT);
@@ -2188,7 +2190,12 @@ static int ibmvfc_cancel_all(struct scsi_device *sdev, int type)
tmf->common.length = sizeof(*tmf);
tmf->scsi_id = rport->port_id;
int_to_scsilun(sdev->lun, &tmf->lun);
- tmf->flags = (type | IBMVFC_TMF_LUA_VALID);
+ if (!(vhost->login_buf->resp.capabilities & IBMVFC_CAN_SUPPRESS_ABTS))
+ type &= ~IBMVFC_TMF_SUPPRESS_ABTS;
+ if (vhost->state == IBMVFC_ACTIVE)
+ tmf->flags = (type | IBMVFC_TMF_LUA_VALID);
+ else
+ tmf->flags = ((type & IBMVFC_TMF_SUPPRESS_ABTS) | IBMVFC_TMF_LUA_VALID);
tmf->cancel_key = (unsigned long)sdev->hostdata;
tmf->my_cancel_key = (unsigned long)starget->hostdata;
@@ -2201,7 +2208,10 @@ static int ibmvfc_cancel_all(struct scsi_device *sdev, int type)
if (rsp_rc != 0) {
sdev_printk(KERN_ERR, sdev, "Failed to send cancel event. rc=%d\n", rsp_rc);
- return -EIO;
+ /* If failure is received, the host adapter is most likely going
+ through reset, return success so the caller will wait for the command
+ being cancelled to get returned */
+ return 0;
}
sdev_printk(KERN_INFO, sdev, "Cancelling outstanding commands.\n");
@@ -2214,7 +2224,15 @@ static int ibmvfc_cancel_all(struct scsi_device *sdev, int type)
if (status != IBMVFC_MAD_SUCCESS) {
sdev_printk(KERN_WARNING, sdev, "Cancel failed with rc=%x\n", status);
- return -EIO;
+ switch (status) {
+ case IBMVFC_MAD_DRIVER_FAILED:
+ case IBMVFC_MAD_CRQ_ERROR:
+ /* Host adapter most likely going through reset, return success to
+ the caller will wait for the command being cancelled to get returned */
+ return 0;
+ default:
+ return -EIO;
+ };
}
sdev_printk(KERN_INFO, sdev, "Successfully cancelled outstanding commands\n");
@@ -2240,6 +2258,21 @@ static int ibmvfc_match_key(struct ibmvfc_event *evt, void *key)
}
/**
+ * ibmvfc_match_evt - Match function for specified event
+ * @evt: ibmvfc event struct
+ * @match: event to match
+ *
+ * Returns:
+ * 1 if event matches key / 0 if event does not match key
+ **/
+static int ibmvfc_match_evt(struct ibmvfc_event *evt, void *match)
+{
+ if (evt == match)
+ return 1;
+ return 0;
+}
+
+/**
* ibmvfc_abort_task_set - Abort outstanding commands to the device
* @sdev: scsi device to abort commands
*
@@ -2310,7 +2343,7 @@ static int ibmvfc_abort_task_set(struct scsi_device *sdev)
timeout = wait_for_completion_timeout(&evt->comp, timeout);
if (!timeout) {
- rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET);
+ rc = ibmvfc_cancel_all(sdev, 0);
if (!rc) {
rc = ibmvfc_wait_for_ops(vhost, sdev->hostdata, ibmvfc_match_key);
if (rc == SUCCESS)
@@ -2320,7 +2353,20 @@ static int ibmvfc_abort_task_set(struct scsi_device *sdev)
if (rc) {
sdev_printk(KERN_INFO, sdev, "Cancel failed, resetting host\n");
ibmvfc_reset_host(vhost);
- rsp_rc = 0;
+ rsp_rc = -EIO;
+ rc = ibmvfc_wait_for_ops(vhost, sdev->hostdata, ibmvfc_match_key);
+
+ if (rc == SUCCESS)
+ rsp_rc = 0;
+
+ rc = ibmvfc_wait_for_ops(vhost, evt, ibmvfc_match_evt);
+ if (rc != SUCCESS) {
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ ibmvfc_hard_reset_host(vhost);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ rsp_rc = 0;
+ }
+
goto out;
}
}
@@ -2353,24 +2399,30 @@ out:
* @cmd: scsi command to abort
*
* Returns:
- * SUCCESS / FAILED
+ * SUCCESS / FAST_IO_FAIL / FAILED
**/
static int ibmvfc_eh_abort_handler(struct scsi_cmnd *cmd)
{
struct scsi_device *sdev = cmd->device;
struct ibmvfc_host *vhost = shost_priv(sdev->host);
- int cancel_rc, abort_rc;
+ int cancel_rc, block_rc;
int rc = FAILED;
ENTER;
- fc_block_scsi_eh(cmd);
+ block_rc = fc_block_scsi_eh(cmd);
ibmvfc_wait_while_resetting(vhost);
- cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET);
- abort_rc = ibmvfc_abort_task_set(sdev);
+ if (block_rc != FAST_IO_FAIL) {
+ cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET);
+ ibmvfc_abort_task_set(sdev);
+ } else
+ cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_SUPPRESS_ABTS);
- if (!cancel_rc && !abort_rc)
+ if (!cancel_rc)
rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun);
+ if (block_rc == FAST_IO_FAIL && rc != FAILED)
+ rc = FAST_IO_FAIL;
+
LEAVE;
return rc;
}
@@ -2380,29 +2432,47 @@ static int ibmvfc_eh_abort_handler(struct scsi_cmnd *cmd)
* @cmd: scsi command struct
*
* Returns:
- * SUCCESS / FAILED
+ * SUCCESS / FAST_IO_FAIL / FAILED
**/
static int ibmvfc_eh_device_reset_handler(struct scsi_cmnd *cmd)
{
struct scsi_device *sdev = cmd->device;
struct ibmvfc_host *vhost = shost_priv(sdev->host);
- int cancel_rc, reset_rc;
+ int cancel_rc, block_rc, reset_rc = 0;
int rc = FAILED;
ENTER;
- fc_block_scsi_eh(cmd);
+ block_rc = fc_block_scsi_eh(cmd);
ibmvfc_wait_while_resetting(vhost);
- cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_LUN_RESET);
- reset_rc = ibmvfc_reset_device(sdev, IBMVFC_LUN_RESET, "LUN");
+ if (block_rc != FAST_IO_FAIL) {
+ cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_LUN_RESET);
+ reset_rc = ibmvfc_reset_device(sdev, IBMVFC_LUN_RESET, "LUN");
+ } else
+ cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_SUPPRESS_ABTS);
if (!cancel_rc && !reset_rc)
rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun);
+ if (block_rc == FAST_IO_FAIL && rc != FAILED)
+ rc = FAST_IO_FAIL;
+
LEAVE;
return rc;
}
/**
+ * ibmvfc_dev_cancel_all_noreset - Device iterated cancel all function
+ * @sdev: scsi device struct
+ * @data: return code
+ *
+ **/
+static void ibmvfc_dev_cancel_all_noreset(struct scsi_device *sdev, void *data)
+{
+ unsigned long *rc = data;
+ *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_SUPPRESS_ABTS);
+}
+
+/**
* ibmvfc_dev_cancel_all_reset - Device iterated cancel all function
* @sdev: scsi device struct
* @data: return code
@@ -2419,26 +2489,33 @@ static void ibmvfc_dev_cancel_all_reset(struct scsi_device *sdev, void *data)
* @cmd: scsi command struct
*
* Returns:
- * SUCCESS / FAILED
+ * SUCCESS / FAST_IO_FAIL / FAILED
**/
static int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd)
{
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 block_rc;
+ int reset_rc = 0;
int rc = FAILED;
unsigned long cancel_rc = 0;
ENTER;
- fc_block_scsi_eh(cmd);
+ block_rc = fc_block_scsi_eh(cmd);
ibmvfc_wait_while_resetting(vhost);
- starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_reset);
- reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target");
+ if (block_rc != FAST_IO_FAIL) {
+ starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_reset);
+ reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target");
+ } else
+ starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_noreset);
if (!cancel_rc && !reset_rc)
rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target);
+ if (block_rc == FAST_IO_FAIL && rc != FAILED)
+ rc = FAST_IO_FAIL;
+
LEAVE;
return rc;
}
@@ -2450,12 +2527,16 @@ static int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd)
**/
static int ibmvfc_eh_host_reset_handler(struct scsi_cmnd *cmd)
{
- int rc;
+ int rc, block_rc;
struct ibmvfc_host *vhost = shost_priv(cmd->device->host);
- fc_block_scsi_eh(cmd);
+ block_rc = fc_block_scsi_eh(cmd);
dev_err(vhost->dev, "Resetting connection due to error recovery\n");
rc = ibmvfc_issue_fc_host_lip(vhost->host);
+
+ if (block_rc == FAST_IO_FAIL)
+ return FAST_IO_FAIL;
+
return rc ? FAILED : SUCCESS;
}
@@ -2479,8 +2560,7 @@ static void ibmvfc_terminate_rport_io(struct fc_rport *rport)
dev_rport = starget_to_rport(scsi_target(sdev));
if (dev_rport != rport)
continue;
- ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET);
- ibmvfc_abort_task_set(sdev);
+ ibmvfc_cancel_all(sdev, IBMVFC_TMF_SUPPRESS_ABTS);
}
rc = ibmvfc_wait_for_ops(vhost, rport, ibmvfc_match_rport);
@@ -2491,23 +2571,23 @@ static void ibmvfc_terminate_rport_io(struct fc_rport *rport)
}
static const struct ibmvfc_async_desc ae_desc [] = {
- { IBMVFC_AE_ELS_PLOGI, "PLOGI", IBMVFC_DEFAULT_LOG_LEVEL + 1 },
- { IBMVFC_AE_ELS_LOGO, "LOGO", IBMVFC_DEFAULT_LOG_LEVEL + 1 },
- { IBMVFC_AE_ELS_PRLO, "PRLO", IBMVFC_DEFAULT_LOG_LEVEL + 1 },
- { IBMVFC_AE_SCN_NPORT, "N-Port SCN", IBMVFC_DEFAULT_LOG_LEVEL + 1 },
- { IBMVFC_AE_SCN_GROUP, "Group SCN", IBMVFC_DEFAULT_LOG_LEVEL + 1 },
- { IBMVFC_AE_SCN_DOMAIN, "Domain SCN", IBMVFC_DEFAULT_LOG_LEVEL },
- { IBMVFC_AE_SCN_FABRIC, "Fabric SCN", IBMVFC_DEFAULT_LOG_LEVEL },
- { IBMVFC_AE_LINK_UP, "Link Up", IBMVFC_DEFAULT_LOG_LEVEL },
- { IBMVFC_AE_LINK_DOWN, "Link Down", IBMVFC_DEFAULT_LOG_LEVEL },
- { IBMVFC_AE_LINK_DEAD, "Link Dead", IBMVFC_DEFAULT_LOG_LEVEL },
- { IBMVFC_AE_HALT, "Halt", IBMVFC_DEFAULT_LOG_LEVEL },
- { IBMVFC_AE_RESUME, "Resume", IBMVFC_DEFAULT_LOG_LEVEL },
- { IBMVFC_AE_ADAPTER_FAILED, "Adapter Failed", IBMVFC_DEFAULT_LOG_LEVEL },
+ { "PLOGI", IBMVFC_AE_ELS_PLOGI, IBMVFC_DEFAULT_LOG_LEVEL + 1 },
+ { "LOGO", IBMVFC_AE_ELS_LOGO, IBMVFC_DEFAULT_LOG_LEVEL + 1 },
+ { "PRLO", IBMVFC_AE_ELS_PRLO, IBMVFC_DEFAULT_LOG_LEVEL + 1 },
+ { "N-Port SCN", IBMVFC_AE_SCN_NPORT, IBMVFC_DEFAULT_LOG_LEVEL + 1 },
+ { "Group SCN", IBMVFC_AE_SCN_GROUP, IBMVFC_DEFAULT_LOG_LEVEL + 1 },
+ { "Domain SCN", IBMVFC_AE_SCN_DOMAIN, IBMVFC_DEFAULT_LOG_LEVEL },
+ { "Fabric SCN", IBMVFC_AE_SCN_FABRIC, IBMVFC_DEFAULT_LOG_LEVEL },
+ { "Link Up", IBMVFC_AE_LINK_UP, IBMVFC_DEFAULT_LOG_LEVEL },
+ { "Link Down", IBMVFC_AE_LINK_DOWN, IBMVFC_DEFAULT_LOG_LEVEL },
+ { "Link Dead", IBMVFC_AE_LINK_DEAD, IBMVFC_DEFAULT_LOG_LEVEL },
+ { "Halt", IBMVFC_AE_HALT, IBMVFC_DEFAULT_LOG_LEVEL },
+ { "Resume", IBMVFC_AE_RESUME, IBMVFC_DEFAULT_LOG_LEVEL },
+ { "Adapter Failed", IBMVFC_AE_ADAPTER_FAILED, IBMVFC_DEFAULT_LOG_LEVEL },
};
static const struct ibmvfc_async_desc unknown_ae = {
- 0, "Unknown async", IBMVFC_DEFAULT_LOG_LEVEL
+ "Unknown async", 0, IBMVFC_DEFAULT_LOG_LEVEL
};
/**
@@ -2595,8 +2675,10 @@ static void ibmvfc_handle_async(struct ibmvfc_async_crq *crq,
case IBMVFC_AE_SCN_FABRIC:
case IBMVFC_AE_SCN_DOMAIN:
vhost->events_to_log |= IBMVFC_AE_RSCN;
- vhost->delay_init = 1;
- __ibmvfc_reset_host(vhost);
+ if (vhost->state < IBMVFC_HALTED) {
+ vhost->delay_init = 1;
+ __ibmvfc_reset_host(vhost);
+ }
break;
case IBMVFC_AE_SCN_NPORT:
case IBMVFC_AE_SCN_GROUP:
@@ -4304,8 +4386,8 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
spin_lock_irqsave(vhost->host->host_lock, flags);
if (rc == H_CLOSED)
vio_enable_interrupts(to_vio_dev(vhost->dev));
- else if (rc || (rc = ibmvfc_send_crq_init(vhost)) ||
- (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) {
+ if (rc || (rc = ibmvfc_send_crq_init(vhost)) ||
+ (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) {
ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD);
dev_err(vhost->dev, "Error after reset (rc=%d)\n", rc);
}
@@ -4433,7 +4515,7 @@ static int ibmvfc_work(void *data)
struct ibmvfc_host *vhost = data;
int rc;
- set_user_nice(current, -20);
+ set_user_nice(current, MIN_NICE);
while (1) {
rc = wait_event_interruptible(vhost->work_wait_q,
@@ -4873,7 +4955,7 @@ static unsigned long ibmvfc_get_desired_dma(struct vio_dev *vdev)
return pool_dma + ((512 * 1024) * driver_template.cmd_per_lun);
}
-static struct vio_device_id ibmvfc_device_table[] __devinitdata = {
+static struct vio_device_id ibmvfc_device_table[] = {
{"fcp", "IBM,vfc-client"},
{ "", "" }
};
@@ -4888,11 +4970,8 @@ static struct vio_driver ibmvfc_driver = {
.probe = ibmvfc_probe,
.remove = ibmvfc_remove,
.get_desired_dma = ibmvfc_get_desired_dma,
- .driver = {
- .name = IBMVFC_NAME,
- .owner = THIS_MODULE,
- .pm = &ibmvfc_pm_ops,
- }
+ .name = IBMVFC_NAME,
+ .pm = &ibmvfc_pm_ops,
};
static struct fc_function_template ibmvfc_transport_functions = {
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
index ef663e7c9bb..017a5290e8c 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 "1.0.9"
-#define IBMVFC_DRIVER_DATE "(August 5, 2010)"
+#define IBMVFC_DRIVER_VERSION "1.0.11"
+#define IBMVFC_DRIVER_DATE "(April 12, 2013)"
#define IBMVFC_DEFAULT_TIMEOUT 60
#define IBMVFC_ADISC_CANCEL_TIMEOUT 45
@@ -208,10 +208,10 @@ struct ibmvfc_npiv_login_resp {
u16 error;
u32 flags;
#define IBMVFC_NATIVE_FC 0x01
-#define IBMVFC_CAN_FLUSH_ON_HALT 0x08
u32 reserved;
u64 capabilities;
#define IBMVFC_CAN_FLUSH_ON_HALT 0x08
+#define IBMVFC_CAN_SUPPRESS_ABTS 0x10
u32 max_cmds;
u32 scsi_id_sz;
u64 max_dma_len;
@@ -351,6 +351,7 @@ struct ibmvfc_tmf {
#define IBMVFC_TMF_LUN_RESET 0x10
#define IBMVFC_TMF_TGT_RESET 0x20
#define IBMVFC_TMF_LUA_VALID 0x40
+#define IBMVFC_TMF_SUPPRESS_ABTS 0x80
u32 cancel_key;
u32 my_cancel_key;
u32 pad;
@@ -542,8 +543,8 @@ enum ibmvfc_async_event {
};
struct ibmvfc_async_desc {
- enum ibmvfc_async_event ae;
const char *desc;
+ enum ibmvfc_async_event ae;
int log_level;
};
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index 67f78a470f5..7b23f21f22f 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -55,13 +55,7 @@
* and sends a CRQ message back to inform the client that the request has
* completed.
*
- * Note that some of the underlying infrastructure is different between
- * machines conforming to the "RS/6000 Platform Architecture" (RPA) and
- * the older iSeries hypervisor models. To support both, some low level
- * routines have been broken out into rpa_vscsi.c and iseries_vscsi.c.
- * The Makefile should pick one, not two, not zero, of these.
- *
- * TODO: This is currently pretty tied to the IBM i/pSeries hypervisor
+ * TODO: This is currently pretty tied to the IBM pSeries hypervisor
* interfaces. It would be really nice to abstract this above an RDMA
* layer.
*/
@@ -99,13 +93,13 @@ 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 char partition_name[97] = "UNKNOWN";
+static unsigned int partition_number = -1;
static struct scsi_transport_template *ibmvscsi_transport_template;
#define IBMVSCSI_VERSION "1.5.9"
-static struct ibmvscsi_ops *ibmvscsi_ops;
-
MODULE_DESCRIPTION("IBM Virtual SCSI");
MODULE_AUTHOR("Dave Boutcher");
MODULE_LICENSE("GPL");
@@ -124,6 +118,327 @@ 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");
+static void ibmvscsi_handle_crq(struct viosrp_crq *crq,
+ struct ibmvscsi_host_data *hostdata);
+
+/* ------------------------------------------------------------
+ * Routines for managing the command/response queue
+ */
+/**
+ * ibmvscsi_handle_event: - Interrupt handler for crq events
+ * @irq: number of irq to handle, not used
+ * @dev_instance: ibmvscsi_host_data of host that received interrupt
+ *
+ * Disables interrupts and schedules srp_task
+ * Always returns IRQ_HANDLED
+ */
+static irqreturn_t ibmvscsi_handle_event(int irq, void *dev_instance)
+{
+ struct ibmvscsi_host_data *hostdata =
+ (struct ibmvscsi_host_data *)dev_instance;
+ vio_disable_interrupts(to_vio_dev(hostdata->dev));
+ tasklet_schedule(&hostdata->srp_task);
+ return IRQ_HANDLED;
+}
+
+/**
+ * release_crq_queue: - Deallocates data and unregisters CRQ
+ * @queue: crq_queue to initialize and register
+ * @host_data: ibmvscsi_host_data of host
+ *
+ * Frees irq, deallocates a page for messages, unmaps dma, and unregisters
+ * the crq with the hypervisor.
+ */
+static void ibmvscsi_release_crq_queue(struct crq_queue *queue,
+ struct ibmvscsi_host_data *hostdata,
+ int max_requests)
+{
+ long rc = 0;
+ struct vio_dev *vdev = to_vio_dev(hostdata->dev);
+ free_irq(vdev->irq, (void *)hostdata);
+ tasklet_kill(&hostdata->srp_task);
+ do {
+ if (rc)
+ msleep(100);
+ rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
+ } while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
+ dma_unmap_single(hostdata->dev,
+ queue->msg_token,
+ queue->size * sizeof(*queue->msgs), DMA_BIDIRECTIONAL);
+ free_page((unsigned long)queue->msgs);
+}
+
+/**
+ * crq_queue_next_crq: - Returns the next entry in message queue
+ * @queue: crq_queue to use
+ *
+ * Returns pointer to next entry in queue, or NULL if there are no new
+ * entried in the CRQ.
+ */
+static struct viosrp_crq *crq_queue_next_crq(struct crq_queue *queue)
+{
+ struct viosrp_crq *crq;
+ unsigned long flags;
+
+ spin_lock_irqsave(&queue->lock, flags);
+ crq = &queue->msgs[queue->cur];
+ if (crq->valid & 0x80) {
+ if (++queue->cur == queue->size)
+ queue->cur = 0;
+
+ /* Ensure the read of the valid bit occurs before reading any
+ * other bits of the CRQ entry
+ */
+ rmb();
+ } else
+ crq = NULL;
+ spin_unlock_irqrestore(&queue->lock, flags);
+
+ return crq;
+}
+
+/**
+ * ibmvscsi_send_crq: - Send a CRQ
+ * @hostdata: the adapter
+ * @word1: the first 64 bits of the data
+ * @word2: the second 64 bits of the data
+ */
+static int ibmvscsi_send_crq(struct ibmvscsi_host_data *hostdata,
+ u64 word1, u64 word2)
+{
+ struct vio_dev *vdev = to_vio_dev(hostdata->dev);
+
+ /*
+ * Ensure the command buffer is flushed to memory before handing it
+ * over to the VIOS to prevent it from fetching any stale data.
+ */
+ mb();
+ return plpar_hcall_norets(H_SEND_CRQ, vdev->unit_address, word1, word2);
+}
+
+/**
+ * ibmvscsi_task: - Process srps asynchronously
+ * @data: ibmvscsi_host_data of host
+ */
+static void ibmvscsi_task(void *data)
+{
+ struct ibmvscsi_host_data *hostdata = (struct ibmvscsi_host_data *)data;
+ struct vio_dev *vdev = to_vio_dev(hostdata->dev);
+ struct viosrp_crq *crq;
+ int done = 0;
+
+ while (!done) {
+ /* Pull all the valid messages off the CRQ */
+ while ((crq = crq_queue_next_crq(&hostdata->queue)) != NULL) {
+ ibmvscsi_handle_crq(crq, hostdata);
+ crq->valid = 0x00;
+ }
+
+ vio_enable_interrupts(vdev);
+ crq = crq_queue_next_crq(&hostdata->queue);
+ if (crq != NULL) {
+ vio_disable_interrupts(vdev);
+ ibmvscsi_handle_crq(crq, hostdata);
+ crq->valid = 0x00;
+ } else {
+ done = 1;
+ }
+ }
+}
+
+static void gather_partition_info(void)
+{
+ struct device_node *rootdn;
+
+ const char *ppartition_name;
+ const __be32 *p_number_ptr;
+
+ /* Retrieve information about this partition */
+ rootdn = of_find_node_by_path("/");
+ if (!rootdn) {
+ return;
+ }
+
+ ppartition_name = of_get_property(rootdn, "ibm,partition-name", NULL);
+ if (ppartition_name)
+ strncpy(partition_name, ppartition_name,
+ sizeof(partition_name));
+ p_number_ptr = of_get_property(rootdn, "ibm,partition-no", NULL);
+ if (p_number_ptr)
+ partition_number = of_read_number(p_number_ptr, 1);
+ of_node_put(rootdn);
+}
+
+static void set_adapter_info(struct ibmvscsi_host_data *hostdata)
+{
+ memset(&hostdata->madapter_info, 0x00,
+ sizeof(hostdata->madapter_info));
+
+ dev_info(hostdata->dev, "SRP_VERSION: %s\n", SRP_VERSION);
+ strcpy(hostdata->madapter_info.srp_version, SRP_VERSION);
+
+ strncpy(hostdata->madapter_info.partition_name, partition_name,
+ sizeof(hostdata->madapter_info.partition_name));
+
+ hostdata->madapter_info.partition_number =
+ cpu_to_be32(partition_number);
+
+ hostdata->madapter_info.mad_version = cpu_to_be32(1);
+ hostdata->madapter_info.os_type = cpu_to_be32(2);
+}
+
+/**
+ * reset_crq_queue: - resets a crq after a failure
+ * @queue: crq_queue to initialize and register
+ * @hostdata: ibmvscsi_host_data of host
+ *
+ */
+static int ibmvscsi_reset_crq_queue(struct crq_queue *queue,
+ struct ibmvscsi_host_data *hostdata)
+{
+ int rc = 0;
+ struct vio_dev *vdev = to_vio_dev(hostdata->dev);
+
+ /* Close the CRQ */
+ do {
+ if (rc)
+ msleep(100);
+ rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
+ } while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
+
+ /* Clean out the queue */
+ memset(queue->msgs, 0x00, PAGE_SIZE);
+ queue->cur = 0;
+
+ set_adapter_info(hostdata);
+
+ /* And re-open it again */
+ rc = plpar_hcall_norets(H_REG_CRQ,
+ vdev->unit_address,
+ queue->msg_token, PAGE_SIZE);
+ if (rc == 2) {
+ /* Adapter is good, but other end is not ready */
+ dev_warn(hostdata->dev, "Partner adapter not ready\n");
+ } else if (rc != 0) {
+ dev_warn(hostdata->dev, "couldn't register crq--rc 0x%x\n", rc);
+ }
+ return rc;
+}
+
+/**
+ * initialize_crq_queue: - Initializes and registers CRQ with hypervisor
+ * @queue: crq_queue to initialize and register
+ * @hostdata: ibmvscsi_host_data of host
+ *
+ * Allocates a page for messages, maps it for dma, and registers
+ * the crq with the hypervisor.
+ * Returns zero on success.
+ */
+static int ibmvscsi_init_crq_queue(struct crq_queue *queue,
+ struct ibmvscsi_host_data *hostdata,
+ int max_requests)
+{
+ int rc;
+ int retrc;
+ struct vio_dev *vdev = to_vio_dev(hostdata->dev);
+
+ queue->msgs = (struct viosrp_crq *)get_zeroed_page(GFP_KERNEL);
+
+ if (!queue->msgs)
+ goto malloc_failed;
+ queue->size = PAGE_SIZE / sizeof(*queue->msgs);
+
+ queue->msg_token = dma_map_single(hostdata->dev, queue->msgs,
+ queue->size * sizeof(*queue->msgs),
+ DMA_BIDIRECTIONAL);
+
+ if (dma_mapping_error(hostdata->dev, queue->msg_token))
+ goto map_failed;
+
+ gather_partition_info();
+ set_adapter_info(hostdata);
+
+ retrc = rc = plpar_hcall_norets(H_REG_CRQ,
+ vdev->unit_address,
+ queue->msg_token, PAGE_SIZE);
+ if (rc == H_RESOURCE)
+ /* maybe kexecing and resource is busy. try a reset */
+ rc = ibmvscsi_reset_crq_queue(queue,
+ hostdata);
+
+ if (rc == 2) {
+ /* Adapter is good, but other end is not ready */
+ dev_warn(hostdata->dev, "Partner adapter not ready\n");
+ retrc = 0;
+ } else if (rc != 0) {
+ dev_warn(hostdata->dev, "Error %d opening adapter\n", rc);
+ goto reg_crq_failed;
+ }
+
+ queue->cur = 0;
+ spin_lock_init(&queue->lock);
+
+ tasklet_init(&hostdata->srp_task, (void *)ibmvscsi_task,
+ (unsigned long)hostdata);
+
+ if (request_irq(vdev->irq,
+ ibmvscsi_handle_event,
+ 0, "ibmvscsi", (void *)hostdata) != 0) {
+ dev_err(hostdata->dev, "couldn't register irq 0x%x\n",
+ vdev->irq);
+ goto req_irq_failed;
+ }
+
+ rc = vio_enable_interrupts(vdev);
+ if (rc != 0) {
+ dev_err(hostdata->dev, "Error %d enabling interrupts!!!\n", rc);
+ goto req_irq_failed;
+ }
+
+ return retrc;
+
+ req_irq_failed:
+ tasklet_kill(&hostdata->srp_task);
+ rc = 0;
+ do {
+ if (rc)
+ msleep(100);
+ rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
+ } while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
+ reg_crq_failed:
+ dma_unmap_single(hostdata->dev,
+ queue->msg_token,
+ queue->size * sizeof(*queue->msgs), DMA_BIDIRECTIONAL);
+ map_failed:
+ free_page((unsigned long)queue->msgs);
+ malloc_failed:
+ return -1;
+}
+
+/**
+ * reenable_crq_queue: - reenables a crq after
+ * @queue: crq_queue to initialize and register
+ * @hostdata: ibmvscsi_host_data of host
+ *
+ */
+static int ibmvscsi_reenable_crq_queue(struct crq_queue *queue,
+ struct ibmvscsi_host_data *hostdata)
+{
+ int rc = 0;
+ struct vio_dev *vdev = to_vio_dev(hostdata->dev);
+
+ /* Re-enable the CRQ */
+ do {
+ if (rc)
+ msleep(100);
+ rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
+ } while ((rc == H_IN_PROGRESS) || (rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
+
+ if (rc)
+ dev_err(hostdata->dev, "Error %d enabling adapter\n", rc);
+ return rc;
+}
+
/* ------------------------------------------------------------
* Routines for the event pool and event structs
*/
@@ -160,9 +475,9 @@ static int initialize_event_pool(struct event_pool *pool,
memset(&evt->crq, 0x00, sizeof(evt->crq));
atomic_set(&evt->free, 1);
evt->crq.valid = 0x80;
- evt->crq.IU_length = sizeof(*evt->xfer_iu);
- evt->crq.IU_data_ptr = pool->iu_token +
- sizeof(*evt->xfer_iu) * i;
+ evt->crq.IU_length = cpu_to_be16(sizeof(*evt->xfer_iu));
+ evt->crq.IU_data_ptr = cpu_to_be64(pool->iu_token +
+ sizeof(*evt->xfer_iu) * i);
evt->xfer_iu = pool->iu_storage + i;
evt->hostdata = hostdata;
evt->ext_list = NULL;
@@ -284,7 +599,7 @@ static void init_event_struct(struct srp_event_struct *evt_struct,
evt_struct->cmnd_done = NULL;
evt_struct->sync_srp = NULL;
evt_struct->crq.format = format;
- evt_struct->crq.timeout = timeout;
+ evt_struct->crq.timeout = cpu_to_be16(timeout);
evt_struct->done = done;
}
@@ -355,8 +670,8 @@ static int map_sg_list(struct scsi_cmnd *cmd, int nseg,
scsi_for_each_sg(cmd, sg, nseg, i) {
struct srp_direct_buf *descr = md + i;
- descr->va = sg_dma_address(sg);
- descr->len = sg_dma_len(sg);
+ descr->va = cpu_to_be64(sg_dma_address(sg));
+ descr->len = cpu_to_be32(sg_dma_len(sg));
descr->key = 0;
total_length += sg_dma_len(sg);
}
@@ -399,13 +714,14 @@ static int map_sg_data(struct scsi_cmnd *cmd,
}
indirect->table_desc.va = 0;
- indirect->table_desc.len = sg_mapped * sizeof(struct srp_direct_buf);
+ indirect->table_desc.len = cpu_to_be32(sg_mapped *
+ sizeof(struct srp_direct_buf));
indirect->table_desc.key = 0;
if (sg_mapped <= MAX_INDIRECT_BUFS) {
total_length = map_sg_list(cmd, sg_mapped,
&indirect->desc_list[0]);
- indirect->len = total_length;
+ indirect->len = cpu_to_be32(total_length);
return 1;
}
@@ -427,9 +743,10 @@ static int map_sg_data(struct scsi_cmnd *cmd,
total_length = map_sg_list(cmd, sg_mapped, evt_struct->ext_list);
- indirect->len = total_length;
- indirect->table_desc.va = evt_struct->ext_list_token;
- indirect->table_desc.len = sg_mapped * sizeof(indirect->desc_list[0]);
+ indirect->len = cpu_to_be32(total_length);
+ indirect->table_desc.va = cpu_to_be64(evt_struct->ext_list_token);
+ indirect->table_desc.len = cpu_to_be32(sg_mapped *
+ sizeof(indirect->desc_list[0]));
memcpy(indirect->desc_list, evt_struct->ext_list,
MAX_INDIRECT_BUFS * sizeof(struct srp_direct_buf));
return 1;
@@ -490,7 +807,8 @@ static void purge_requests(struct ibmvscsi_host_data *hostdata, int error_code)
evt->hostdata->dev);
if (evt->cmnd_done)
evt->cmnd_done(evt->cmnd);
- } else if (evt->done)
+ } else if (evt->done && evt->crq.format != VIOSRP_MAD_FORMAT &&
+ evt->iu.srp.login_req.opcode != SRP_LOGIN_REQ)
evt->done(evt);
free_event_struct(&evt->hostdata->pool, evt);
spin_lock_irqsave(hostdata->host->host_lock, flags);
@@ -545,7 +863,7 @@ static int ibmvscsi_send_srp_event(struct srp_event_struct *evt_struct,
struct ibmvscsi_host_data *hostdata,
unsigned long timeout)
{
- u64 *crq_as_u64 = (u64 *) &evt_struct->crq;
+ __be64 *crq_as_u64 = (__be64 *)&evt_struct->crq;
int request_status = 0;
int rc;
int srp_req = 0;
@@ -616,8 +934,9 @@ static int ibmvscsi_send_srp_event(struct srp_event_struct *evt_struct,
add_timer(&evt_struct->timer);
}
- if ((rc =
- ibmvscsi_ops->send_crq(hostdata, crq_as_u64[0], crq_as_u64[1])) != 0) {
+ rc = ibmvscsi_send_crq(hostdata, be64_to_cpu(crq_as_u64[0]),
+ be64_to_cpu(crq_as_u64[1]));
+ if (rc != 0) {
list_del(&evt_struct->list);
del_timer(&evt_struct->timer);
@@ -683,15 +1002,16 @@ static void handle_cmd_rsp(struct srp_event_struct *evt_struct)
if (((cmnd->result >> 1) & 0x1f) == CHECK_CONDITION)
memcpy(cmnd->sense_buffer,
rsp->data,
- rsp->sense_data_len);
+ be32_to_cpu(rsp->sense_data_len));
unmap_cmd_data(&evt_struct->iu.srp.cmd,
evt_struct,
evt_struct->hostdata->dev);
if (rsp->flags & SRP_RSP_FLAG_DOOVER)
- scsi_set_resid(cmnd, rsp->data_out_res_cnt);
+ scsi_set_resid(cmnd,
+ be32_to_cpu(rsp->data_out_res_cnt));
else if (rsp->flags & SRP_RSP_FLAG_DIOVER)
- scsi_set_resid(cmnd, rsp->data_in_res_cnt);
+ scsi_set_resid(cmnd, be32_to_cpu(rsp->data_in_res_cnt));
}
if (evt_struct->cmnd_done)
@@ -713,7 +1033,7 @@ static inline u16 lun_from_dev(struct scsi_device *dev)
* @cmd: struct scsi_cmnd to be executed
* @done: Callback function to be called when cmd is completed
*/
-static int ibmvscsi_queuecommand(struct scsi_cmnd *cmnd,
+static int ibmvscsi_queuecommand_lck(struct scsi_cmnd *cmnd,
void (*done) (struct scsi_cmnd *))
{
struct srp_cmd *srp_cmd;
@@ -733,7 +1053,7 @@ static int ibmvscsi_queuecommand(struct scsi_cmnd *cmnd,
memset(srp_cmd, 0x00, SRP_MAX_IU_LEN);
srp_cmd->opcode = SRP_CMD;
memcpy(srp_cmd->cdb, cmnd->cmnd, sizeof(srp_cmd->cdb));
- srp_cmd->lun = ((u64) lun) << 48;
+ srp_cmd->lun = cpu_to_be64(((u64)lun) << 48);
if (!map_data_for_srp_cmd(cmnd, evt_struct, srp_cmd, hostdata->dev)) {
if (!firmware_has_feature(FW_FEATURE_CMO))
@@ -758,14 +1078,17 @@ static int ibmvscsi_queuecommand(struct scsi_cmnd *cmnd,
if ((in_fmt == SRP_DATA_DESC_INDIRECT ||
out_fmt == SRP_DATA_DESC_INDIRECT) &&
indirect->table_desc.va == 0) {
- indirect->table_desc.va = evt_struct->crq.IU_data_ptr +
+ indirect->table_desc.va =
+ cpu_to_be64(be64_to_cpu(evt_struct->crq.IU_data_ptr) +
offsetof(struct srp_cmd, add_data) +
- offsetof(struct srp_indirect_buf, desc_list);
+ offsetof(struct srp_indirect_buf, desc_list));
}
return ibmvscsi_send_srp_event(evt_struct, hostdata, 0);
}
+static DEF_SCSI_QCMD(ibmvscsi_queuecommand)
+
/* ------------------------------------------------------------
* Routines for driver initialization
*/
@@ -852,7 +1175,7 @@ static void login_rsp(struct srp_event_struct *evt_struct)
* request_limit could have been set to -1 by this client.
*/
atomic_set(&hostdata->request_limit,
- evt_struct->xfer_iu->srp.login_rsp.req_lim_delta);
+ be32_to_cpu(evt_struct->xfer_iu->srp.login_rsp.req_lim_delta));
/* If we had any pending I/Os, kick them */
scsi_unblock_requests(hostdata->host);
@@ -878,8 +1201,9 @@ static int send_srp_login(struct ibmvscsi_host_data *hostdata)
login = &evt_struct->iu.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;
+ login->req_it_iu_len = cpu_to_be32(sizeof(union srp_iu));
+ login->req_buf_fmt = cpu_to_be16(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
@@ -908,12 +1232,13 @@ static void capabilities_rsp(struct srp_event_struct *evt_struct)
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)
+ if (hostdata->caps.migration.common.server_support !=
+ cpu_to_be16(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)
+ cpu_to_be16(SERVER_SUPPORTS_CAP))
dev_info(hostdata->dev, "Client reserve enabled\n");
else
dev_info(hostdata->dev, "Client reserve not supported\n");
@@ -945,9 +1270,9 @@ static void send_mad_capabilities(struct ibmvscsi_host_data *hostdata)
req = &evt_struct->iu.mad.capabilities;
memset(req, 0, sizeof(*req));
- hostdata->caps.flags = CAP_LIST_SUPPORTED;
+ hostdata->caps.flags = cpu_to_be32(CAP_LIST_SUPPORTED);
if (hostdata->client_migrated)
- hostdata->caps.flags |= CLIENT_MIGRATED;
+ hostdata->caps.flags |= cpu_to_be32(CLIENT_MIGRATED);
strncpy(hostdata->caps.name, dev_name(&hostdata->host->shost_gendev),
sizeof(hostdata->caps.name));
@@ -958,22 +1283,31 @@ static void send_mad_capabilities(struct ibmvscsi_host_data *hostdata)
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;
+ req->common.type = cpu_to_be32(VIOSRP_CAPABILITIES_TYPE);
+ req->buffer = cpu_to_be64(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;
+ hostdata->caps.migration.common.cap_type =
+ cpu_to_be32(MIGRATION_CAPABILITIES);
+ hostdata->caps.migration.common.length =
+ cpu_to_be16(sizeof(hostdata->caps.migration));
+ hostdata->caps.migration.common.server_support =
+ cpu_to_be16(SERVER_SUPPORTS_CAP);
+ hostdata->caps.migration.ecl = cpu_to_be32(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);
+ hostdata->caps.reserve.common.cap_type =
+ cpu_to_be32(RESERVATION_CAPABILITIES);
+ hostdata->caps.reserve.common.length =
+ cpu_to_be16(sizeof(hostdata->caps.reserve));
+ hostdata->caps.reserve.common.server_support =
+ cpu_to_be16(SERVER_SUPPORTS_CAP);
+ hostdata->caps.reserve.type =
+ cpu_to_be32(CLIENT_RESERVE_SCSI_2);
+ req->common.length =
+ cpu_to_be16(sizeof(hostdata->caps));
} else
- req->common.length = sizeof(hostdata->caps) - sizeof(hostdata->caps.reserve);
+ req->common.length = cpu_to_be16(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))
@@ -991,7 +1325,7 @@ static void send_mad_capabilities(struct ibmvscsi_host_data *hostdata)
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;
+ u16 status = be16_to_cpu(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");
@@ -1028,8 +1362,8 @@ static int enable_fast_fail(struct ibmvscsi_host_data *hostdata)
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);
+ fast_fail_mad->common.type = cpu_to_be32(VIOSRP_ENABLE_FAST_FAIL);
+ fast_fail_mad->common.length = cpu_to_be16(sizeof(*fast_fail_mad));
spin_lock_irqsave(hostdata->host->host_lock, flags);
rc = ibmvscsi_send_srp_event(evt_struct, hostdata, info_timeout * 2);
@@ -1056,15 +1390,15 @@ static void adapter_info_rsp(struct srp_event_struct *evt_struct)
"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]);
+ be32_to_cpu(hostdata->madapter_info.partition_number),
+ be32_to_cpu(hostdata->madapter_info.os_type),
+ be32_to_cpu(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;
+ be32_to_cpu(hostdata->madapter_info.port_max_txu[0]) >> 9;
- if (hostdata->madapter_info.os_type == 3 &&
+ if (be32_to_cpu(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);
@@ -1073,7 +1407,7 @@ static void adapter_info_rsp(struct srp_event_struct *evt_struct)
hostdata->host->sg_tablesize = MAX_INDIRECT_BUFS;
}
- if (hostdata->madapter_info.os_type == 3) {
+ if (be32_to_cpu(hostdata->madapter_info.os_type) == 3) {
enable_fast_fail(hostdata);
return;
}
@@ -1108,9 +1442,9 @@ static void send_mad_adapter_info(struct ibmvscsi_host_data *hostdata)
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;
+ req->common.type = cpu_to_be32(VIOSRP_ADAPTER_INFO_TYPE);
+ req->common.length = cpu_to_be16(sizeof(hostdata->madapter_info));
+ req->buffer = cpu_to_be64(hostdata->adapter_info_addr);
spin_lock_irqsave(hostdata->host->host_lock, flags);
if (ibmvscsi_send_srp_event(evt_struct, hostdata, info_timeout * 2))
@@ -1195,7 +1529,7 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd)
/* Set up an abort SRP command */
memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
tsk_mgmt->opcode = SRP_TSK_MGMT;
- tsk_mgmt->lun = ((u64) lun) << 48;
+ tsk_mgmt->lun = cpu_to_be64(((u64) lun) << 48);
tsk_mgmt->tsk_mgmt_func = SRP_TSK_ABORT_TASK;
tsk_mgmt->task_tag = (u64) found_evt;
@@ -1318,7 +1652,7 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd)
/* Set up a lun reset SRP command */
memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
tsk_mgmt->opcode = SRP_TSK_MGMT;
- tsk_mgmt->lun = ((u64) lun) << 48;
+ tsk_mgmt->lun = cpu_to_be64(((u64) lun) << 48);
tsk_mgmt->tsk_mgmt_func = SRP_TSK_LUN_RESET;
evt->sync_srp = &srp_rsp;
@@ -1424,21 +1758,22 @@ static int ibmvscsi_eh_host_reset_handler(struct scsi_cmnd *cmd)
* @hostdata: ibmvscsi_host_data of host
*
*/
-void ibmvscsi_handle_crq(struct viosrp_crq *crq,
- struct ibmvscsi_host_data *hostdata)
+static void ibmvscsi_handle_crq(struct viosrp_crq *crq,
+ struct ibmvscsi_host_data *hostdata)
{
long rc;
unsigned long flags;
+ /* The hypervisor copies our tag value here so no byteswapping */
struct srp_event_struct *evt_struct =
- (struct srp_event_struct *)crq->IU_data_ptr;
+ (__force struct srp_event_struct *)crq->IU_data_ptr;
switch (crq->valid) {
case 0xC0: /* initialization */
switch (crq->format) {
case 0x01: /* Initialization message */
dev_info(hostdata->dev, "partner initialized\n");
/* Send back a response */
- if ((rc = ibmvscsi_ops->send_crq(hostdata,
- 0xC002000000000000LL, 0)) == 0) {
+ rc = ibmvscsi_send_crq(hostdata, 0xC002000000000000LL, 0);
+ if (rc == 0) {
/* Now login */
init_adapter(hostdata);
} else {
@@ -1486,18 +1821,18 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq,
*/
if (!valid_event_struct(&hostdata->pool, evt_struct)) {
dev_err(hostdata->dev, "returned correlation_token 0x%p is invalid!\n",
- (void *)crq->IU_data_ptr);
+ evt_struct);
return;
}
if (atomic_read(&evt_struct->free)) {
dev_err(hostdata->dev, "received duplicate correlation_token 0x%p!\n",
- (void *)crq->IU_data_ptr);
+ evt_struct);
return;
}
if (crq->format == VIOSRP_SRP_FORMAT)
- atomic_add(evt_struct->xfer_iu->srp.rsp.req_lim_delta,
+ atomic_add(be32_to_cpu(evt_struct->xfer_iu->srp.rsp.req_lim_delta),
&hostdata->request_limit);
del_timer(&evt_struct->timer);
@@ -1545,15 +1880,16 @@ static int ibmvscsi_do_host_config(struct ibmvscsi_host_data *hostdata,
host_config = &evt_struct->iu.mad.host_config;
+ /* The transport length field is only 16-bit */
+ length = min(0xffff, length);
+
/* Set up a lun reset SRP command */
memset(host_config, 0x00, sizeof(*host_config));
- host_config->common.type = VIOSRP_HOST_CONFIG_TYPE;
- host_config->common.length = length;
- host_config->buffer = addr = dma_map_single(hostdata->dev, buffer,
- length,
- DMA_BIDIRECTIONAL);
+ host_config->common.type = cpu_to_be32(VIOSRP_HOST_CONFIG_TYPE);
+ host_config->common.length = cpu_to_be16(length);
+ addr = dma_map_single(hostdata->dev, buffer, length, DMA_BIDIRECTIONAL);
- if (dma_mapping_error(hostdata->dev, host_config->buffer)) {
+ if (dma_mapping_error(hostdata->dev, addr)) {
if (!firmware_has_feature(FW_FEATURE_CMO))
dev_err(hostdata->dev,
"dma_mapping error getting host config\n");
@@ -1561,6 +1897,8 @@ static int ibmvscsi_do_host_config(struct ibmvscsi_host_data *hostdata,
return -1;
}
+ host_config->buffer = cpu_to_be64(addr);
+
init_completion(&evt_struct->comp);
spin_lock_irqsave(hostdata->host->host_lock, flags);
rc = ibmvscsi_send_srp_event(evt_struct, hostdata, info_timeout * 2);
@@ -1590,8 +1928,8 @@ static int ibmvscsi_slave_configure(struct scsi_device *sdev)
sdev->allow_restart = 1;
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);
+ scsi_adjust_queue_depth(sdev, 0, shost->cmd_per_lun);
return 0;
}
@@ -1844,18 +2182,17 @@ static void ibmvscsi_do_work(struct ibmvscsi_host_data *hostdata)
smp_rmb();
hostdata->reset_crq = 0;
- rc = ibmvscsi_ops->reset_crq_queue(&hostdata->queue, hostdata);
+ rc = ibmvscsi_reset_crq_queue(&hostdata->queue, hostdata);
if (!rc)
- rc = ibmvscsi_ops->send_crq(hostdata, 0xC001000000000000LL, 0);
- if (!rc)
- rc = vio_enable_interrupts(to_vio_dev(hostdata->dev));
+ rc = ibmvscsi_send_crq(hostdata, 0xC001000000000000LL, 0);
+ vio_enable_interrupts(to_vio_dev(hostdata->dev));
} else if (hostdata->reenable_crq) {
smp_rmb();
action = "enable";
- rc = ibmvscsi_ops->reenable_crq_queue(&hostdata->queue, hostdata);
+ rc = ibmvscsi_reenable_crq_queue(&hostdata->queue, hostdata);
hostdata->reenable_crq = 0;
if (!rc)
- rc = ibmvscsi_ops->send_crq(hostdata, 0xC001000000000000LL, 0);
+ rc = ibmvscsi_send_crq(hostdata, 0xC001000000000000LL, 0);
} else
return;
@@ -1887,7 +2224,7 @@ static int ibmvscsi_work(void *data)
struct ibmvscsi_host_data *hostdata = data;
int rc;
- set_user_nice(current, -20);
+ set_user_nice(current, MIN_NICE);
while (1) {
rc = wait_event_interruptible(hostdata->work_wait_q,
@@ -1949,7 +2286,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
goto init_crq_failed;
}
- rc = ibmvscsi_ops->init_crq_queue(&hostdata->queue, hostdata, max_events);
+ rc = ibmvscsi_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);
goto kill_kthread;
@@ -1979,7 +2316,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
* to fail if the other end is not acive. In that case we don't
* want to scan
*/
- if (ibmvscsi_ops->send_crq(hostdata, 0xC001000000000000LL, 0) == 0
+ if (ibmvscsi_send_crq(hostdata, 0xC001000000000000LL, 0) == 0
|| rc == H_RESOURCE) {
/*
* Wait around max init_timeout secs for the adapter to finish
@@ -2007,7 +2344,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
add_host_failed:
release_event_pool(&hostdata->pool, hostdata);
init_pool_failed:
- ibmvscsi_ops->release_crq_queue(&hostdata->queue, hostdata, max_events);
+ ibmvscsi_release_crq_queue(&hostdata->queue, hostdata, max_events);
kill_kthread:
kthread_stop(hostdata->work_thread);
init_crq_failed:
@@ -2023,7 +2360,7 @@ static int ibmvscsi_remove(struct vio_dev *vdev)
struct ibmvscsi_host_data *hostdata = dev_get_drvdata(&vdev->dev);
unmap_persist_bufs(hostdata);
release_event_pool(&hostdata->pool, hostdata);
- ibmvscsi_ops->release_crq_queue(&hostdata->queue, hostdata,
+ ibmvscsi_release_crq_queue(&hostdata->queue, hostdata,
max_events);
kthread_stop(hostdata->work_thread);
@@ -2044,14 +2381,17 @@ static int ibmvscsi_remove(struct vio_dev *vdev)
static int ibmvscsi_resume(struct device *dev)
{
struct ibmvscsi_host_data *hostdata = dev_get_drvdata(dev);
- return ibmvscsi_ops->resume(hostdata);
+ vio_disable_interrupts(to_vio_dev(hostdata->dev));
+ tasklet_schedule(&hostdata->srp_task);
+
+ return 0;
}
/**
* ibmvscsi_device_table: Used by vio.c to match devices in the device tree we
* support.
*/
-static struct vio_device_id ibmvscsi_device_table[] __devinitdata = {
+static struct vio_device_id ibmvscsi_device_table[] = {
{"vscsi", "IBM,v-scsi"},
{ "", "" }
};
@@ -2066,11 +2406,8 @@ static struct vio_driver ibmvscsi_driver = {
.probe = ibmvscsi_probe,
.remove = ibmvscsi_remove,
.get_desired_dma = ibmvscsi_get_desired_dma,
- .driver = {
- .name = "ibmvscsi",
- .owner = THIS_MODULE,
- .pm = &ibmvscsi_pm_ops,
- }
+ .name = "ibmvscsi",
+ .pm = &ibmvscsi_pm_ops,
};
static struct srp_function_template ibmvscsi_transport_functions = {
@@ -2084,11 +2421,7 @@ int __init ibmvscsi_module_init(void)
driver_template.can_queue = max_requests;
max_events = max_requests + 2;
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- ibmvscsi_ops = &iseriesvscsi_ops;
- else if (firmware_has_feature(FW_FEATURE_VIO))
- ibmvscsi_ops = &rpavscsi_ops;
- else
+ if (!firmware_has_feature(FW_FEATURE_VIO))
return -ENODEV;
ibmvscsi_transport_template =
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.h b/drivers/scsi/ibmvscsi/ibmvscsi.h
index 02197a2b22b..7d64867c5dd 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.h
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.h
@@ -107,27 +107,4 @@ struct ibmvscsi_host_data {
dma_addr_t adapter_info_addr;
};
-/* routines for managing a command/response queue */
-void ibmvscsi_handle_crq(struct viosrp_crq *crq,
- struct ibmvscsi_host_data *hostdata);
-
-struct ibmvscsi_ops {
- int (*init_crq_queue)(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata,
- int max_requests);
- void (*release_crq_queue)(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata,
- int max_requests);
- int (*reset_crq_queue)(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata);
- int (*reenable_crq_queue)(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata);
- int (*send_crq)(struct ibmvscsi_host_data *hostdata,
- u64 word1, u64 word2);
- int (*resume) (struct ibmvscsi_host_data *hostdata);
-};
-
-extern struct ibmvscsi_ops iseriesvscsi_ops;
-extern struct ibmvscsi_ops rpavscsi_ops;
-
#endif /* IBMVSCSI_H */
diff --git a/drivers/scsi/ibmvscsi/ibmvstgt.c b/drivers/scsi/ibmvscsi/ibmvstgt.c
index 2256babe047..56f8a861ed7 100644
--- a/drivers/scsi/ibmvscsi/ibmvstgt.c
+++ b/drivers/scsi/ibmvscsi/ibmvstgt.c
@@ -589,7 +589,7 @@ static int crq_queue_create(struct crq_queue *queue, struct srp_target *target)
}
err = request_irq(vport->dma_dev->irq, &ibmvstgt_interrupt,
- IRQF_DISABLED, "ibmvstgt", target);
+ 0, "ibmvstgt", target);
if (err)
goto req_irq_failed;
@@ -907,7 +907,7 @@ static int ibmvstgt_remove(struct vio_dev *dev)
return 0;
}
-static struct vio_device_id ibmvstgt_device_table[] __devinitdata = {
+static struct vio_device_id ibmvstgt_device_table[] = {
{"v-scsi-host", "IBM,v-scsi-host"},
{"",""}
};
@@ -918,10 +918,7 @@ static struct vio_driver ibmvstgt_driver = {
.id_table = ibmvstgt_device_table,
.probe = ibmvstgt_probe,
.remove = ibmvstgt_remove,
- .driver = {
- .name = "ibmvscsis",
- .owner = THIS_MODULE,
- }
+ .name = "ibmvscsis",
};
static int get_system_info(void)
diff --git a/drivers/scsi/ibmvscsi/iseries_vscsi.c b/drivers/scsi/ibmvscsi/iseries_vscsi.c
deleted file mode 100644
index f4776451a75..00000000000
--- a/drivers/scsi/ibmvscsi/iseries_vscsi.c
+++ /dev/null
@@ -1,173 +0,0 @@
-/* ------------------------------------------------------------
- * iSeries_vscsi.c
- * (C) Copyright IBM Corporation 1994, 2003
- * Authors: Colin DeVilbiss (devilbis@us.ibm.com)
- * Santiago Leon (santil@us.ibm.com)
- * Dave Boutcher (sleddog@us.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
- *
- * ------------------------------------------------------------
- * iSeries-specific functions of the SCSI host adapter for Virtual I/O devices
- *
- * This driver allows the Linux SCSI peripheral drivers to directly
- * access devices in the hosting partition, either on an iSeries
- * hypervisor system or a converged hypervisor system.
- */
-
-#include <asm/iseries/vio.h>
-#include <asm/iseries/hv_lp_event.h>
-#include <asm/iseries/hv_types.h>
-#include <asm/iseries/hv_lp_config.h>
-#include <asm/vio.h>
-#include <linux/device.h>
-#include "ibmvscsi.h"
-
-/* global variables */
-static struct ibmvscsi_host_data *single_host_data;
-
-/* ------------------------------------------------------------
- * Routines for direct interpartition interaction
- */
-struct srp_lp_event {
- struct HvLpEvent lpevt; /* 0x00-0x17 */
- u32 reserved1; /* 0x18-0x1B; unused */
- u16 version; /* 0x1C-0x1D; unused */
- u16 subtype_rc; /* 0x1E-0x1F; unused */
- struct viosrp_crq crq; /* 0x20-0x3F */
-};
-
-/**
- * standard interface for handling logical partition events.
- */
-static void iseriesvscsi_handle_event(struct HvLpEvent *lpevt)
-{
- struct srp_lp_event *evt = (struct srp_lp_event *)lpevt;
-
- if (!evt) {
- printk(KERN_ERR "ibmvscsi: received null event\n");
- return;
- }
-
- if (single_host_data == NULL) {
- printk(KERN_ERR
- "ibmvscsi: received event, no adapter present\n");
- return;
- }
-
- ibmvscsi_handle_crq(&evt->crq, single_host_data);
-}
-
-/* ------------------------------------------------------------
- * Routines for driver initialization
- */
-static int iseriesvscsi_init_crq_queue(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata,
- int max_requests)
-{
- int rc;
-
- single_host_data = hostdata;
- rc = viopath_open(viopath_hostLp, viomajorsubtype_scsi, max_requests);
- if (rc < 0) {
- printk("viopath_open failed with rc %d in open_event_path\n",
- rc);
- goto viopath_open_failed;
- }
-
- rc = vio_setHandler(viomajorsubtype_scsi, iseriesvscsi_handle_event);
- if (rc < 0) {
- printk("vio_setHandler failed with rc %d in open_event_path\n",
- rc);
- goto vio_setHandler_failed;
- }
- return 0;
-
- vio_setHandler_failed:
- viopath_close(viopath_hostLp, viomajorsubtype_scsi, max_requests);
- viopath_open_failed:
- return -1;
-}
-
-static void iseriesvscsi_release_crq_queue(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata,
- int max_requests)
-{
- vio_clearHandler(viomajorsubtype_scsi);
- viopath_close(viopath_hostLp, viomajorsubtype_scsi, max_requests);
-}
-
-/**
- * reset_crq_queue: - resets a crq after a failure
- * @queue: crq_queue to initialize and register
- * @hostdata: ibmvscsi_host_data of host
- *
- * no-op for iSeries
- */
-static int iseriesvscsi_reset_crq_queue(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata)
-{
- return 0;
-}
-
-/**
- * reenable_crq_queue: - reenables a crq after a failure
- * @queue: crq_queue to initialize and register
- * @hostdata: ibmvscsi_host_data of host
- *
- * no-op for iSeries
- */
-static int iseriesvscsi_reenable_crq_queue(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata)
-{
- return 0;
-}
-
-/**
- * iseriesvscsi_send_crq: - Send a CRQ
- * @hostdata: the adapter
- * @word1: the first 64 bits of the data
- * @word2: the second 64 bits of the data
- */
-static int iseriesvscsi_send_crq(struct ibmvscsi_host_data *hostdata,
- u64 word1, u64 word2)
-{
- single_host_data = hostdata;
- return HvCallEvent_signalLpEventFast(viopath_hostLp,
- HvLpEvent_Type_VirtualIo,
- viomajorsubtype_scsi,
- HvLpEvent_AckInd_NoAck,
- HvLpEvent_AckType_ImmediateAck,
- viopath_sourceinst(viopath_hostLp),
- viopath_targetinst(viopath_hostLp),
- 0,
- VIOVERSION << 16, word1, word2, 0,
- 0);
-}
-
-static int iseriesvscsi_resume(struct ibmvscsi_host_data *hostdata)
-{
- return 0;
-}
-
-struct ibmvscsi_ops iseriesvscsi_ops = {
- .init_crq_queue = iseriesvscsi_init_crq_queue,
- .release_crq_queue = iseriesvscsi_release_crq_queue,
- .reset_crq_queue = iseriesvscsi_reset_crq_queue,
- .reenable_crq_queue = iseriesvscsi_reenable_crq_queue,
- .send_crq = iseriesvscsi_send_crq,
- .resume = iseriesvscsi_resume,
-};
diff --git a/drivers/scsi/ibmvscsi/rpa_vscsi.c b/drivers/scsi/ibmvscsi/rpa_vscsi.c
deleted file mode 100644
index f48ae0190d9..00000000000
--- a/drivers/scsi/ibmvscsi/rpa_vscsi.c
+++ /dev/null
@@ -1,368 +0,0 @@
-/* ------------------------------------------------------------
- * rpa_vscsi.c
- * (C) Copyright IBM Corporation 1994, 2003
- * Authors: Colin DeVilbiss (devilbis@us.ibm.com)
- * Santiago Leon (santil@us.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
- *
- * ------------------------------------------------------------
- * RPA-specific functions of the SCSI host adapter for Virtual I/O devices
- *
- * This driver allows the Linux SCSI peripheral drivers to directly
- * access devices in the hosting partition, either on an iSeries
- * hypervisor system or a converged hypervisor system.
- */
-
-#include <asm/vio.h>
-#include <asm/prom.h>
-#include <asm/iommu.h>
-#include <asm/hvcall.h>
-#include <linux/delay.h>
-#include <linux/dma-mapping.h>
-#include <linux/gfp.h>
-#include <linux/interrupt.h>
-#include "ibmvscsi.h"
-
-static char partition_name[97] = "UNKNOWN";
-static unsigned int partition_number = -1;
-
-/* ------------------------------------------------------------
- * Routines for managing the command/response queue
- */
-/**
- * rpavscsi_handle_event: - Interrupt handler for crq events
- * @irq: number of irq to handle, not used
- * @dev_instance: ibmvscsi_host_data of host that received interrupt
- *
- * Disables interrupts and schedules srp_task
- * Always returns IRQ_HANDLED
- */
-static irqreturn_t rpavscsi_handle_event(int irq, void *dev_instance)
-{
- struct ibmvscsi_host_data *hostdata =
- (struct ibmvscsi_host_data *)dev_instance;
- vio_disable_interrupts(to_vio_dev(hostdata->dev));
- tasklet_schedule(&hostdata->srp_task);
- return IRQ_HANDLED;
-}
-
-/**
- * release_crq_queue: - Deallocates data and unregisters CRQ
- * @queue: crq_queue to initialize and register
- * @host_data: ibmvscsi_host_data of host
- *
- * Frees irq, deallocates a page for messages, unmaps dma, and unregisters
- * the crq with the hypervisor.
- */
-static void rpavscsi_release_crq_queue(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata,
- int max_requests)
-{
- long rc = 0;
- struct vio_dev *vdev = to_vio_dev(hostdata->dev);
- free_irq(vdev->irq, (void *)hostdata);
- tasklet_kill(&hostdata->srp_task);
- do {
- if (rc)
- msleep(100);
- rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
- } while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
- dma_unmap_single(hostdata->dev,
- queue->msg_token,
- queue->size * sizeof(*queue->msgs), DMA_BIDIRECTIONAL);
- free_page((unsigned long)queue->msgs);
-}
-
-/**
- * crq_queue_next_crq: - Returns the next entry in message queue
- * @queue: crq_queue to use
- *
- * Returns pointer to next entry in queue, or NULL if there are no new
- * entried in the CRQ.
- */
-static struct viosrp_crq *crq_queue_next_crq(struct crq_queue *queue)
-{
- struct viosrp_crq *crq;
- unsigned long flags;
-
- spin_lock_irqsave(&queue->lock, flags);
- crq = &queue->msgs[queue->cur];
- if (crq->valid & 0x80) {
- if (++queue->cur == queue->size)
- queue->cur = 0;
- } else
- crq = NULL;
- spin_unlock_irqrestore(&queue->lock, flags);
-
- return crq;
-}
-
-/**
- * rpavscsi_send_crq: - Send a CRQ
- * @hostdata: the adapter
- * @word1: the first 64 bits of the data
- * @word2: the second 64 bits of the data
- */
-static int rpavscsi_send_crq(struct ibmvscsi_host_data *hostdata,
- u64 word1, u64 word2)
-{
- struct vio_dev *vdev = to_vio_dev(hostdata->dev);
-
- return plpar_hcall_norets(H_SEND_CRQ, vdev->unit_address, word1, word2);
-}
-
-/**
- * rpavscsi_task: - Process srps asynchronously
- * @data: ibmvscsi_host_data of host
- */
-static void rpavscsi_task(void *data)
-{
- struct ibmvscsi_host_data *hostdata = (struct ibmvscsi_host_data *)data;
- struct vio_dev *vdev = to_vio_dev(hostdata->dev);
- struct viosrp_crq *crq;
- int done = 0;
-
- while (!done) {
- /* Pull all the valid messages off the CRQ */
- while ((crq = crq_queue_next_crq(&hostdata->queue)) != NULL) {
- ibmvscsi_handle_crq(crq, hostdata);
- crq->valid = 0x00;
- }
-
- vio_enable_interrupts(vdev);
- if ((crq = crq_queue_next_crq(&hostdata->queue)) != NULL) {
- vio_disable_interrupts(vdev);
- ibmvscsi_handle_crq(crq, hostdata);
- crq->valid = 0x00;
- } else {
- done = 1;
- }
- }
-}
-
-static void gather_partition_info(void)
-{
- struct device_node *rootdn;
-
- const char *ppartition_name;
- const unsigned int *p_number_ptr;
-
- /* Retrieve information about this partition */
- rootdn = of_find_node_by_path("/");
- if (!rootdn) {
- return;
- }
-
- ppartition_name = of_get_property(rootdn, "ibm,partition-name", NULL);
- if (ppartition_name)
- strncpy(partition_name, ppartition_name,
- sizeof(partition_name));
- p_number_ptr = of_get_property(rootdn, "ibm,partition-no", NULL);
- if (p_number_ptr)
- partition_number = *p_number_ptr;
- of_node_put(rootdn);
-}
-
-static void set_adapter_info(struct ibmvscsi_host_data *hostdata)
-{
- memset(&hostdata->madapter_info, 0x00,
- sizeof(hostdata->madapter_info));
-
- dev_info(hostdata->dev, "SRP_VERSION: %s\n", SRP_VERSION);
- strcpy(hostdata->madapter_info.srp_version, SRP_VERSION);
-
- strncpy(hostdata->madapter_info.partition_name, partition_name,
- sizeof(hostdata->madapter_info.partition_name));
-
- hostdata->madapter_info.partition_number = partition_number;
-
- hostdata->madapter_info.mad_version = 1;
- hostdata->madapter_info.os_type = 2;
-}
-
-/**
- * reset_crq_queue: - resets a crq after a failure
- * @queue: crq_queue to initialize and register
- * @hostdata: ibmvscsi_host_data of host
- *
- */
-static int rpavscsi_reset_crq_queue(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata)
-{
- int rc = 0;
- struct vio_dev *vdev = to_vio_dev(hostdata->dev);
-
- /* Close the CRQ */
- do {
- if (rc)
- msleep(100);
- rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
- } while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
-
- /* Clean out the queue */
- memset(queue->msgs, 0x00, PAGE_SIZE);
- queue->cur = 0;
-
- set_adapter_info(hostdata);
-
- /* And re-open it again */
- rc = plpar_hcall_norets(H_REG_CRQ,
- vdev->unit_address,
- queue->msg_token, PAGE_SIZE);
- if (rc == 2) {
- /* Adapter is good, but other end is not ready */
- dev_warn(hostdata->dev, "Partner adapter not ready\n");
- } else if (rc != 0) {
- dev_warn(hostdata->dev, "couldn't register crq--rc 0x%x\n", rc);
- }
- return rc;
-}
-
-/**
- * initialize_crq_queue: - Initializes and registers CRQ with hypervisor
- * @queue: crq_queue to initialize and register
- * @hostdata: ibmvscsi_host_data of host
- *
- * Allocates a page for messages, maps it for dma, and registers
- * the crq with the hypervisor.
- * Returns zero on success.
- */
-static int rpavscsi_init_crq_queue(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata,
- int max_requests)
-{
- int rc;
- int retrc;
- struct vio_dev *vdev = to_vio_dev(hostdata->dev);
-
- queue->msgs = (struct viosrp_crq *)get_zeroed_page(GFP_KERNEL);
-
- if (!queue->msgs)
- goto malloc_failed;
- queue->size = PAGE_SIZE / sizeof(*queue->msgs);
-
- queue->msg_token = dma_map_single(hostdata->dev, queue->msgs,
- queue->size * sizeof(*queue->msgs),
- DMA_BIDIRECTIONAL);
-
- if (dma_mapping_error(hostdata->dev, queue->msg_token))
- goto map_failed;
-
- gather_partition_info();
- set_adapter_info(hostdata);
-
- retrc = rc = plpar_hcall_norets(H_REG_CRQ,
- vdev->unit_address,
- queue->msg_token, PAGE_SIZE);
- if (rc == H_RESOURCE)
- /* maybe kexecing and resource is busy. try a reset */
- rc = rpavscsi_reset_crq_queue(queue,
- hostdata);
-
- if (rc == 2) {
- /* Adapter is good, but other end is not ready */
- dev_warn(hostdata->dev, "Partner adapter not ready\n");
- retrc = 0;
- } else if (rc != 0) {
- dev_warn(hostdata->dev, "Error %d opening adapter\n", rc);
- goto reg_crq_failed;
- }
-
- queue->cur = 0;
- spin_lock_init(&queue->lock);
-
- tasklet_init(&hostdata->srp_task, (void *)rpavscsi_task,
- (unsigned long)hostdata);
-
- if (request_irq(vdev->irq,
- rpavscsi_handle_event,
- 0, "ibmvscsi", (void *)hostdata) != 0) {
- dev_err(hostdata->dev, "couldn't register irq 0x%x\n",
- vdev->irq);
- goto req_irq_failed;
- }
-
- rc = vio_enable_interrupts(vdev);
- if (rc != 0) {
- dev_err(hostdata->dev, "Error %d enabling interrupts!!!\n", rc);
- goto req_irq_failed;
- }
-
- return retrc;
-
- req_irq_failed:
- tasklet_kill(&hostdata->srp_task);
- rc = 0;
- do {
- if (rc)
- msleep(100);
- rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
- } while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
- reg_crq_failed:
- dma_unmap_single(hostdata->dev,
- queue->msg_token,
- queue->size * sizeof(*queue->msgs), DMA_BIDIRECTIONAL);
- map_failed:
- free_page((unsigned long)queue->msgs);
- malloc_failed:
- return -1;
-}
-
-/**
- * reenable_crq_queue: - reenables a crq after
- * @queue: crq_queue to initialize and register
- * @hostdata: ibmvscsi_host_data of host
- *
- */
-static int rpavscsi_reenable_crq_queue(struct crq_queue *queue,
- struct ibmvscsi_host_data *hostdata)
-{
- int rc = 0;
- struct vio_dev *vdev = to_vio_dev(hostdata->dev);
-
- /* Re-enable the CRQ */
- do {
- if (rc)
- msleep(100);
- rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
- } while ((rc == H_IN_PROGRESS) || (rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
-
- if (rc)
- dev_err(hostdata->dev, "Error %d enabling adapter\n", rc);
- return rc;
-}
-
-/**
- * rpavscsi_resume: - resume after suspend
- * @hostdata: ibmvscsi_host_data of host
- *
- */
-static int rpavscsi_resume(struct ibmvscsi_host_data *hostdata)
-{
- vio_disable_interrupts(to_vio_dev(hostdata->dev));
- tasklet_schedule(&hostdata->srp_task);
- return 0;
-}
-
-struct ibmvscsi_ops rpavscsi_ops = {
- .init_crq_queue = rpavscsi_init_crq_queue,
- .release_crq_queue = rpavscsi_release_crq_queue,
- .reset_crq_queue = rpavscsi_reset_crq_queue,
- .reenable_crq_queue = rpavscsi_reenable_crq_queue,
- .send_crq = rpavscsi_send_crq,
- .resume = rpavscsi_resume,
-};
diff --git a/drivers/scsi/ibmvscsi/viosrp.h b/drivers/scsi/ibmvscsi/viosrp.h
index 2cd735d1d19..11624308762 100644
--- a/drivers/scsi/ibmvscsi/viosrp.h
+++ b/drivers/scsi/ibmvscsi/viosrp.h
@@ -75,9 +75,9 @@ struct viosrp_crq {
u8 format; /* SCSI vs out-of-band */
u8 reserved;
u8 status; /* non-scsi failure? (e.g. DMA failure) */
- u16 timeout; /* in seconds */
- u16 IU_length; /* in bytes */
- u64 IU_data_ptr; /* the TCE for transferring data */
+ __be16 timeout; /* in seconds */
+ __be16 IU_length; /* in bytes */
+ __be64 IU_data_ptr; /* the TCE for transferring data */
};
/* MADs are Management requests above and beyond the IUs defined in the SRP
@@ -124,10 +124,10 @@ enum viosrp_capability_flag {
* Common MAD header
*/
struct mad_common {
- u32 type;
- u16 status;
- u16 length;
- u64 tag;
+ __be32 type;
+ __be16 status;
+ __be16 length;
+ __be64 tag;
};
/*
@@ -139,23 +139,23 @@ struct mad_common {
*/
struct viosrp_empty_iu {
struct mad_common common;
- u64 buffer;
- u32 port;
+ __be64 buffer;
+ __be32 port;
};
struct viosrp_error_log {
struct mad_common common;
- u64 buffer;
+ __be64 buffer;
};
struct viosrp_adapter_info {
struct mad_common common;
- u64 buffer;
+ __be64 buffer;
};
struct viosrp_host_config {
struct mad_common common;
- u64 buffer;
+ __be64 buffer;
};
struct viosrp_fast_fail {
@@ -164,27 +164,27 @@ struct viosrp_fast_fail {
struct viosrp_capabilities {
struct mad_common common;
- u64 buffer;
+ __be64 buffer;
};
struct mad_capability_common {
- u32 cap_type;
- u16 length;
- u16 server_support;
+ __be32 cap_type;
+ __be16 length;
+ __be16 server_support;
};
struct mad_reserve_cap {
struct mad_capability_common common;
- u32 type;
+ __be32 type;
};
struct mad_migration_cap {
struct mad_capability_common common;
- u32 ecl;
+ __be32 ecl;
};
struct capabilities{
- u32 flags;
+ __be32 flags;
char name[SRP_MAX_LOC_LEN];
char loc[SRP_MAX_LOC_LEN];
struct mad_migration_cap migration;
@@ -208,10 +208,10 @@ union viosrp_iu {
struct mad_adapter_info_data {
char srp_version[8];
char partition_name[96];
- u32 partition_number;
- u32 mad_version;
- u32 os_type;
- u32 port_max_txu[8]; /* per-port maximum transfer */
+ __be32 partition_number;
+ __be32 mad_version;
+ __be32 os_type;
+ __be32 port_max_txu[8]; /* per-port maximum transfer */
};
#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 08:40:04 +0000