Converts ipr to use the new EH API of libata, removing the
last user of this API, allowing for its ultimate removal from
the kernel.
Sending this out only as an RFC for now. The patch will need
significantly more testing, but I can now detect and initialize
a SATA device and the main functional path appears to be working.
Signed-off-by: Brian King <brk...@linux.vnet.ibm.com>
---
drivers/scsi/ipr.c | 479 +++++++++++++++++++++++++++++++----------------------
drivers/scsi/ipr.h | 3
2 files changed, 288 insertions(+), 194 deletions(-)
diff -puN drivers/scsi/ipr.c~ipr_libata_api_change drivers/scsi/ipr.c
--- linux-2.6.git/drivers/scsi/ipr.c~ipr_libata_api_change 2016-08-30
20:55:39.209008819 -0500
+++ linux-2.6.git-bjking1/drivers/scsi/ipr.c 2016-08-30 20:56:44.153224313
-0500
@@ -84,6 +84,7 @@
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_transport.h>
#include "ipr.h"
/*
@@ -833,10 +834,14 @@ static void ipr_sata_eh_done(struct ipr_
{
struct ata_queued_cmd *qc = ipr_cmd->qc;
struct ipr_sata_port *sata_port = qc->ap->private_data;
+ unsigned long lock_flags;
qc->err_mask |= AC_ERR_OTHER;
sata_port->ioasa.status |= ATA_BUSY;
+
+ spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
ata_qc_complete(qc);
}
@@ -850,17 +855,72 @@ static void ipr_sata_eh_done(struct ipr_
* Return value:
* none
**/
+static void __ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
+{
+ struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
+
+ scsi_cmd->result |= (DID_ERROR << 16);
+
+ scsi_dma_unmap(ipr_cmd->scsi_cmd);
+ scsi_cmd->scsi_done(scsi_cmd);
+ if (ipr_cmd->eh_comp)
+ complete(ipr_cmd->eh_comp);
+ spin_lock(&ipr_cmd->hrrq->_lock);
+ list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ spin_unlock(&ipr_cmd->hrrq->_lock);
+}
+
+/**
+ * ipr_scsi_eh_done - mid-layer done function for aborted ops
+ * @ipr_cmd: ipr command struct
+ *
+ * This function is invoked by the interrupt handler for
+ * ops generated by the SCSI mid-layer which are being aborted.
+ *
+ * Return value:
+ * none
+ **/
static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
{
struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
+ struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
+ unsigned long lock_flags;
scsi_cmd->result |= (DID_ERROR << 16);
scsi_dma_unmap(ipr_cmd->scsi_cmd);
scsi_cmd->scsi_done(scsi_cmd);
+
+ spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
if (ipr_cmd->eh_comp)
complete(ipr_cmd->eh_comp);
+ spin_lock(&ipr_cmd->hrrq->_lock);
list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
+ spin_unlock(&ipr_cmd->hrrq->_lock);
+ spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+}
+
+static void ipr_send_back_failed_ops(struct ipr_ioa_cfg *ioa_cfg)
+{
+ struct ipr_cmnd *ipr_cmd, *temp;
+ struct ipr_hrr_queue *hrrq;
+ LIST_HEAD(error_q);
+ unsigned long flags = 0;
+
+ ENTER;
+ for_each_hrrq(hrrq, ioa_cfg) {
+ spin_lock_irqsave(hrrq->lock, flags);
+ list_splice_init(&hrrq->hrrq_error_q, &error_q);
+ spin_unlock_irqrestore(hrrq->lock, flags);
+
+ list_for_each_entry_safe(ipr_cmd, temp, &error_q, queue) {
+ list_del(&ipr_cmd->queue);
+ ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
IPR_IOASC_IOA_WAS_RESET);
+ ipr_cmd->fast_done(ipr_cmd);
+ }
+ }
+
+ LEAVE;
}
/**
@@ -882,7 +942,7 @@ static void ipr_fail_all_ops(struct ipr_
spin_lock(&hrrq->_lock);
list_for_each_entry_safe(ipr_cmd,
temp, &hrrq->hrrq_pending_q, queue) {
- list_del(&ipr_cmd->queue);
+ list_move_tail(&ipr_cmd->queue, &hrrq->hrrq_error_q);
ipr_cmd->s.ioasa.hdr.ioasc =
cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
@@ -890,14 +950,11 @@ static void ipr_fail_all_ops(struct ipr_
cpu_to_be32(IPR_DRIVER_ILID);
if (ipr_cmd->scsi_cmd)
- ipr_cmd->done = ipr_scsi_eh_done;
+ ipr_cmd->fast_done = ipr_scsi_eh_done;
else if (ipr_cmd->qc)
- ipr_cmd->done = ipr_sata_eh_done;
+ ipr_cmd->fast_done = ipr_sata_eh_done;
- ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
- IPR_IOASC_IOA_WAS_RESET);
del_timer(&ipr_cmd->timer);
- ipr_cmd->done(ipr_cmd);
}
spin_unlock(&hrrq->_lock);
}
@@ -3267,6 +3324,16 @@ static void ipr_release_dump(struct kref
LEAVE;
}
+static struct ata_port_info sata_port_info;
+
+static void ipr_sata_eh_work(struct work_struct *work)
+{
+ struct ipr_sata_port *sata_port = container_of(work, struct
ipr_sata_port, work);
+ struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
+
+ ata_scsi_port_error_handler(ioa_cfg->host, sata_port->ap);
+}
+
/**
* ipr_worker_thread - Worker thread
* @work: ioa config struct
@@ -3282,12 +3349,15 @@ static void ipr_worker_thread(struct wor
{
unsigned long lock_flags;
struct ipr_resource_entry *res;
+ struct ipr_sata_port *sata_port;
+ struct ata_port *ap;
struct scsi_device *sdev;
struct ipr_dump *dump;
struct ipr_ioa_cfg *ioa_cfg =
container_of(work, struct ipr_ioa_cfg, work_q);
u8 bus, target, lun;
- int did_work;
+ int did_work, rc;
+ int sata_ports = 0;
ENTER;
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
@@ -3324,25 +3394,90 @@ restart:
}
list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
- if (res->del_from_ml && res->sdev) {
+ if (!res->del_from_ml)
+ continue;
+ if (res->sdev) {
did_work = 1;
sdev = res->sdev;
if (!scsi_device_get(sdev)) {
- if (!res->add_to_ml)
- list_move_tail(&res->queue,
&ioa_cfg->free_res_q);
- else
- res->del_from_ml = 0;
+ if (!res->sata_port) {
+ if (!res->add_to_ml)
+
list_move_tail(&res->queue, &ioa_cfg->free_res_q);
+ else
+ res->del_from_ml = 0;
+ }
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
scsi_remove_device(sdev);
scsi_device_put(sdev);
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
}
break;
+ } else if (ipr_is_gata(res)) {
+ did_work = 1;
+ sata_port = res->sata_port;
+ res->sata_port = NULL;
+ ap = sata_port->ap;
+ if (!res->add_to_ml)
+ list_move_tail(&res->queue,
&ioa_cfg->free_res_q);
+ else
+ res->del_from_ml = 0;
+
+
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+ spin_lock_irqsave(ap->lock, lock_flags);
+ ap->pflags |= ATA_PFLAG_UNLOADING;
+ ata_port_schedule_eh(ap);
+ spin_unlock_irqrestore(ap->lock, lock_flags);
+
+ ata_port_wait_eh(ap);
+ ata_sas_port_destroy(ap);
+ kfree(sata_port);
+ spin_lock_irqsave(ioa_cfg->host->host_lock,
lock_flags);
}
}
} while (did_work);
list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
+ if (res->add_to_ml && ipr_is_gata(res) && !res->sata_port) {
+ spin_unlock_irqrestore(ioa_cfg->host->host_lock,
lock_flags);
+ sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
+ ap = ata_sas_port_alloc(&ioa_cfg->ata_host,
&sata_port_info, ioa_cfg->host);
+
+ if (!sata_port || !ap) {
+ spin_lock_irqsave(ioa_cfg->host->host_lock,
lock_flags);
+ res->add_to_ml = 0;
+ kfree(sata_port);
+ goto restart;
+ }
+
+ spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+ sata_port->ioa_cfg = ioa_cfg;
+ sata_port->ap = ap;
+ sata_port->res = res;
+ INIT_WORK(&sata_port->work, ipr_sata_eh_work);
+
+ res->sata_port = sata_port;
+ ap->private_data = sata_port;
+ ap->cbl = ATA_CBL_SATA;
+ ap->scsi_host = ioa_cfg->host;
+ spin_unlock_irqrestore(ioa_cfg->host->host_lock,
lock_flags);
+ rc = ata_sas_port_init(ap);
+ if (rc == 0)
+ ata_sas_async_probe(ap);
+ sata_ports++;
+ spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+ goto restart;
+ }
+ }
+
+ if (sata_ports) {
+ sata_ports = 0;
+ spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+ wait_event(ioa_cfg->host->host_wait,
!scsi_host_in_recovery(ioa_cfg->host));
+ spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+ goto restart;
+ }
+
+ list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
if (res->add_to_ml) {
bus = res->bus;
target = res->target;
@@ -4734,68 +4869,13 @@ static struct ipr_resource_entry *ipr_fi
return NULL;
}
-static struct ata_port_info sata_port_info;
-
-/**
- * ipr_target_alloc - Prepare for commands to a SCSI target
- * @starget: scsi target struct
- *
- * If the device is a SATA device, this function allocates an
- * ATA port with libata, else it does nothing.
- *
- * Return value:
- * 0 on success / non-0 on failure
- **/
-static int ipr_target_alloc(struct scsi_target *starget)
-{
- struct Scsi_Host *shost = dev_to_shost(&starget->dev);
- struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
- struct ipr_sata_port *sata_port;
- struct ata_port *ap;
- struct ipr_resource_entry *res;
- unsigned long lock_flags;
-
- spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
- res = ipr_find_starget(starget);
- starget->hostdata = NULL;
-
- if (res && ipr_is_gata(res)) {
- spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
- sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
- if (!sata_port)
- return -ENOMEM;
-
- ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info,
shost);
- if (ap) {
- spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
- sata_port->ioa_cfg = ioa_cfg;
- sata_port->ap = ap;
- sata_port->res = res;
-
- res->sata_port = sata_port;
- ap->private_data = sata_port;
- starget->hostdata = sata_port;
- } else {
- kfree(sata_port);
- return -ENOMEM;
- }
- }
- spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
-
- return 0;
-}
-
/**
* ipr_target_destroy - Destroy a SCSI target
* @starget: scsi target struct
*
- * If the device was a SATA device, this function frees the libata
- * ATA port, else it does nothing.
- *
**/
static void ipr_target_destroy(struct scsi_target *starget)
{
- struct ipr_sata_port *sata_port = starget->hostdata;
struct Scsi_Host *shost = dev_to_shost(&starget->dev);
struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
@@ -4809,12 +4889,6 @@ static void ipr_target_destroy(struct sc
clear_bit(starget->id, ioa_cfg->target_ids);
}
}
-
- if (sata_port) {
- starget->hostdata = NULL;
- ata_sas_port_destroy(sata_port->ap);
- kfree(sata_port);
- }
}
/**
@@ -4857,8 +4931,6 @@ static void ipr_slave_destroy(struct scs
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
res = (struct ipr_resource_entry *) sdev->hostdata;
if (res) {
- if (res->sata_port)
- res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
sdev->hostdata = NULL;
res->sdev = NULL;
res->sata_port = NULL;
@@ -4918,37 +4990,6 @@ static int ipr_slave_configure(struct sc
}
/**
- * ipr_ata_slave_alloc - Prepare for commands to a SATA device
- * @sdev: scsi device struct
- *
- * This function initializes an ATA port so that future commands
- * sent through queuecommand will work.
- *
- * Return value:
- * 0 on success
- **/
-static int ipr_ata_slave_alloc(struct scsi_device *sdev)
-{
- struct ipr_sata_port *sata_port = NULL;
- int rc = -ENXIO;
-
- ENTER;
- if (sdev->sdev_target)
- sata_port = sdev->sdev_target->hostdata;
- if (sata_port) {
- rc = ata_sas_port_init(sata_port->ap);
- if (rc == 0)
- rc = ata_sas_sync_probe(sata_port->ap);
- }
-
- if (rc)
- ipr_slave_destroy(sdev);
-
- LEAVE;
- return rc;
-}
-
-/**
* ipr_slave_alloc - Prepare for commands to a device.
* @sdev: scsi device struct
*
@@ -4980,10 +5021,6 @@ static int ipr_slave_alloc(struct scsi_d
if (!ipr_is_naca_model(res))
res->needs_sync_complete = 1;
rc = 0;
- if (ipr_is_gata(res)) {
- spin_unlock_irqrestore(ioa_cfg->host->host_lock,
lock_flags);
- return ipr_ata_slave_alloc(sdev);
- }
}
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
@@ -5201,6 +5238,17 @@ static int ipr_sata_reset(struct ata_lin
return rc;
}
+static void ipr_ata_sched_eh(struct ata_port *ap)
+{
+ struct ipr_sata_port *sata_port = ap->private_data;
+ struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
+
+ if (ap->pflags & ATA_PFLAG_INITIALIZING)
+ return;
+
+ queue_work(ioa_cfg->sata_work_q, &sata_port->work);
+}
+
/**
* ipr_eh_dev_reset - Reset the device
* @scsi_cmd: scsi command struct
@@ -5217,7 +5265,6 @@ static int __ipr_eh_dev_reset(struct scs
struct ipr_cmnd *ipr_cmd;
struct ipr_ioa_cfg *ioa_cfg;
struct ipr_resource_entry *res;
- struct ata_port *ap;
int rc = 0;
struct ipr_hrr_queue *hrrq;
@@ -5233,7 +5280,7 @@ static int __ipr_eh_dev_reset(struct scs
* mid-layer to call ipr_eh_host_reset, which will then go to sleep and
wait for the
* reset to complete
*/
- if (ioa_cfg->in_reset_reload)
+ if (ioa_cfg->in_reset_reload || ipr_is_gata(res))
return FAILED;
if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
return FAILED;
@@ -5244,13 +5291,6 @@ static int __ipr_eh_dev_reset(struct scs
if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
if (ipr_cmd->scsi_cmd)
ipr_cmd->done = ipr_scsi_eh_done;
- if (ipr_cmd->qc)
- ipr_cmd->done = ipr_sata_eh_done;
- if (ipr_cmd->qc &&
- !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
- ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
- ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
- }
}
}
spin_unlock(&hrrq->_lock);
@@ -5258,26 +5298,7 @@ static int __ipr_eh_dev_reset(struct scs
res->resetting_device = 1;
scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
- if (ipr_is_gata(res) && res->sata_port) {
- ap = res->sata_port->ap;
- spin_unlock_irq(scsi_cmd->device->host->host_lock);
- ata_std_error_handler(ap);
- spin_lock_irq(scsi_cmd->device->host->host_lock);
-
- for_each_hrrq(hrrq, ioa_cfg) {
- spin_lock(&hrrq->_lock);
- list_for_each_entry(ipr_cmd,
- &hrrq->hrrq_pending_q, queue) {
- if (ipr_cmd->ioarcb.res_handle ==
- res->res_handle) {
- rc = -EIO;
- break;
- }
- }
- spin_unlock(&hrrq->_lock);
- }
- } else
- rc = ipr_device_reset(ioa_cfg, res);
+ rc = ipr_device_reset(ioa_cfg, res);
res->resetting_device = 0;
res->reset_occurred = 1;
@@ -5487,6 +5508,69 @@ static int ipr_scan_finished(struct Scsi
return rc;
}
+static void ipr_eh_strategy(struct Scsi_Host *shost)
+{
+ unsigned long flags;
+ LIST_HEAD(eh_work_q);
+ LIST_HEAD(eh_done_q);
+ LIST_HEAD(eh_sata_q);
+ struct scsi_cmnd *scsi_cmd, *tmp;
+ struct ipr_resource_entry *res, *last_res;
+ struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ list_splice_init(&shost->eh_cmd_q, &eh_work_q);
+ spin_unlock_irqrestore(shost->host_lock, flags);
+
+ do {
+ last_res = NULL;
+ res = NULL;
+
+ list_for_each_entry_safe(scsi_cmd, tmp, &eh_work_q, eh_entry) {
+ if (!scsi_cmd->device->hostdata)
+ continue;
+
+ res = scsi_cmd->device->hostdata;
+
+ if (!ipr_is_gata(res) || !res->sata_port)
+ continue;
+
+ if (last_res && last_res != res)
+ continue;
+
+ last_res = res;
+ list_move(&scsi_cmd->eh_entry, &eh_sata_q);
+ }
+
+ if (!list_empty(&eh_sata_q)) {
+ struct ata_port *ap = res->sata_port->ap;
+
+ ata_scsi_cmd_error_handler(shost, ap, &eh_sata_q);
+
+ while (!list_empty(&eh_sata_q))
+ list_del_init(eh_sata_q.next);
+ }
+ } while (last_res);
+
+ if (!scsi_eh_abort_cmds(&eh_work_q, &eh_done_q))
+ scsi_eh_ready_devs(shost, &eh_work_q, &eh_done_q);
+
+ spin_lock_irqsave(shost->host_lock, flags);
+ if (shost->eh_deadline != -1)
+ shost->last_reset = 0;
+ shost->host_eh_scheduled = 0;
+
+ list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
+ if (ipr_is_gata(res) && res->sata_port)
+ ipr_ata_sched_eh(res->sata_port->ap);
+ }
+
+ spin_unlock_irqrestore(shost->host_lock, flags);
+
+ flush_workqueue(ioa_cfg->sata_work_q);
+ scsi_eh_flush_done_q(&eh_done_q);
+}
+
/**
* ipr_eh_host_reset - Reset the host adapter
* @scsi_cmd: scsi command struct
@@ -6262,7 +6346,7 @@ static void ipr_erp_start(struct ipr_ioa
u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
if (!res) {
- ipr_scsi_eh_done(ipr_cmd);
+ __ipr_scsi_eh_done(ipr_cmd);
return;
}
@@ -6568,6 +6652,10 @@ static const char *ipr_ioa_info(struct S
return buffer;
}
+static struct scsi_transport_template driver_transport = {
+ .eh_strategy_handler = ipr_eh_strategy,
+};
+
static struct scsi_host_template driver_template = {
.module = THIS_MODULE,
.name = "IPR",
@@ -6581,7 +6669,6 @@ static struct scsi_host_template driver_
.slave_configure = ipr_slave_configure,
.slave_destroy = ipr_slave_destroy,
.scan_finished = ipr_scan_finished,
- .target_alloc = ipr_target_alloc,
.target_destroy = ipr_target_destroy,
.change_queue_depth = ipr_change_queue_depth,
.bios_param = ipr_biosparam,
@@ -6597,46 +6684,6 @@ static struct scsi_host_template driver_
};
/**
- * ipr_ata_phy_reset - libata phy_reset handler
- * @ap: ata port to reset
- *
- **/
-static void ipr_ata_phy_reset(struct ata_port *ap)
-{
- unsigned long flags;
- struct ipr_sata_port *sata_port = ap->private_data;
- struct ipr_resource_entry *res = sata_port->res;
- struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
- int rc;
-
- ENTER;
- spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
- while (ioa_cfg->in_reset_reload) {
- spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
- wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
- spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
- }
-
- if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
- goto out_unlock;
-
- rc = ipr_device_reset(ioa_cfg, res);
-
- if (rc) {
- ap->link.device[0].class = ATA_DEV_NONE;
- goto out_unlock;
- }
-
- ap->link.device[0].class = res->ata_class;
- if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
- ap->link.device[0].class = ATA_DEV_NONE;
-
-out_unlock:
- spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
- LEAVE;
-}
-
-/**
* ipr_ata_post_internal - Cleanup after an internal command
* @qc: ATA queued command
*
@@ -6650,6 +6697,7 @@ static void ipr_ata_post_internal(struct
struct ipr_cmnd *ipr_cmd;
struct ipr_hrr_queue *hrrq;
unsigned long flags;
+ unsigned int found = 0;
spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
while (ioa_cfg->in_reset_reload) {
@@ -6661,13 +6709,14 @@ static void ipr_ata_post_internal(struct
for_each_hrrq(hrrq, ioa_cfg) {
spin_lock(&hrrq->_lock);
list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
- if (ipr_cmd->qc == qc) {
- ipr_device_reset(ioa_cfg, sata_port->res);
- break;
- }
+ if (ipr_cmd->qc == qc)
+ found++;
}
spin_unlock(&hrrq->_lock);
}
+
+ if (found)
+ ipr_device_reset(ioa_cfg, sata_port->res);
spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
}
@@ -6714,8 +6763,9 @@ static void ipr_sata_done(struct ipr_cmn
struct ipr_sata_port *sata_port = qc->ap->private_data;
struct ipr_resource_entry *res = sata_port->res;
u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
+ unsigned long flags;
- spin_lock(&ipr_cmd->hrrq->_lock);
+ spin_lock_irqsave(ipr_cmd->hrrq->lock, flags);
if (ipr_cmd->ioa_cfg->sis64)
memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
sizeof(struct ipr_ioasa_gata));
@@ -6732,7 +6782,7 @@ static void ipr_sata_done(struct ipr_cmn
else
qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
- spin_unlock(&ipr_cmd->hrrq->_lock);
+ spin_unlock_irqrestore(ipr_cmd->hrrq->lock, flags);
ata_qc_complete(qc);
}
@@ -6902,7 +6952,7 @@ static unsigned int ipr_qc_issue(struct
return AC_ERR_SYSTEM;
}
- ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
+ ipr_init_ipr_cmnd(ipr_cmd, ipr_sata_done);
ioarcb = &ipr_cmd->ioarcb;
if (ioa_cfg->sis64) {
@@ -6992,16 +7042,22 @@ static bool ipr_qc_fill_rtf(struct ata_q
return true;
}
+static void ipr_ata_end_eh(struct ata_port *ap) { }
+
static struct ata_port_operations ipr_sata_ops = {
- .phy_reset = ipr_ata_phy_reset,
+ .prereset = ata_std_prereset,
.hardreset = ipr_sata_reset,
+ .postreset = ata_std_postreset,
+ .error_handler = ata_std_error_handler,
.post_internal_cmd = ipr_ata_post_internal,
.qc_prep = ata_noop_qc_prep,
.qc_defer = ipr_qc_defer,
.qc_issue = ipr_qc_issue,
.qc_fill_rtf = ipr_qc_fill_rtf,
.port_start = ata_sas_port_start,
- .port_stop = ata_sas_port_stop
+ .port_stop = ata_sas_port_stop,
+ .sched_eh = ata_std_sched_eh,
+ .end_eh = ipr_ata_end_eh,
};
static struct ata_port_info sata_port_info = {
@@ -7084,6 +7140,10 @@ static int ipr_ioa_bringdown_done(struct
}
wmb();
+ spin_unlock_irq(ioa_cfg->host->host_lock);
+ ipr_send_back_failed_ops(ioa_cfg);
+ spin_lock_irq(ioa_cfg->host->host_lock);
+
list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
wake_up_all(&ioa_cfg->reset_wait_q);
LEAVE;
@@ -7146,9 +7206,10 @@ static int ipr_ioa_reset_done(struct ipr
list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
wake_up_all(&ioa_cfg->reset_wait_q);
- spin_unlock(ioa_cfg->host->host_lock);
+ spin_unlock_irq(ioa_cfg->host->host_lock);
scsi_unblock_requests(ioa_cfg->host);
- spin_lock(ioa_cfg->host->host_lock);
+ ipr_send_back_failed_ops(ioa_cfg);
+ spin_lock_irq(ioa_cfg->host->host_lock);
if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
scsi_block_requests(ioa_cfg->host);
@@ -9167,6 +9228,7 @@ static void ipr_initiate_ioa_reset(struc
if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
spin_unlock_irq(ioa_cfg->host->host_lock);
scsi_unblock_requests(ioa_cfg->host);
+ ipr_send_back_failed_ops(ioa_cfg);
spin_lock_irq(ioa_cfg->host->host_lock);
}
return;
@@ -9477,6 +9539,7 @@ static void ipr_free_all_resources(struc
ipr_free_irqs(ioa_cfg);
if (ioa_cfg->reset_work_q)
destroy_workqueue(ioa_cfg->reset_work_q);
+ destroy_workqueue(ioa_cfg->sata_work_q);
iounmap(ioa_cfg->hdw_dma_regs);
pci_release_regions(pdev);
ipr_free_mem(ioa_cfg);
@@ -9837,6 +9900,7 @@ static void ipr_init_ioa_cfg(struct ipr_
for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
+ INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_error_q);
spin_lock_init(&ioa_cfg->hrrq[i]._lock);
if (i == 0)
ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
@@ -10075,6 +10139,7 @@ static int ipr_probe_ioa(struct pci_dev
ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
+ host->transportt = &driver_transport;
ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
@@ -10294,6 +10359,14 @@ static int ipr_probe_ioa(struct pci_dev
goto cleanup_nolog;
}
+ ioa_cfg->sata_work_q = alloc_ordered_workqueue("ipr_sata_%d",
+ WQ_MEM_RECLAIM,
host->host_no);
+
+ if (!ioa_cfg->sata_work_q) {
+ dev_err(&pdev->dev, "Couldn't register SATA workqueue\n");
+ goto out_free_irq;
+ }
+
if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
(dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E &&
!ioa_cfg->revid)) {
ioa_cfg->needs_warm_reset = 1;
@@ -10305,7 +10378,7 @@ static int ipr_probe_ioa(struct pci_dev
if (!ioa_cfg->reset_work_q) {
dev_err(&pdev->dev, "Couldn't register reset
workqueue\n");
rc = -ENOMEM;
- goto out_free_irq;
+ goto out_free_sata_work_q;
}
} else
ioa_cfg->reset = ipr_reset_start_bist;
@@ -10318,6 +10391,8 @@ static int ipr_probe_ioa(struct pci_dev
out:
return rc;
+out_free_sata_work_q:
+ destroy_workqueue(ioa_cfg->sata_work_q);
out_free_irq:
ipr_free_irqs(ioa_cfg);
cleanup_nolog:
@@ -10378,7 +10453,8 @@ static void __ipr_remove(struct pci_dev
{
unsigned long host_lock_flags = 0;
struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
- int i;
+ struct ipr_resource_entry *res;
+ int i = 0;
unsigned long driver_lock_flags;
ENTER;
@@ -10387,6 +10463,20 @@ static void __ipr_remove(struct pci_dev
spin_unlock_irqrestore(ioa_cfg->host->host_lock,
host_lock_flags);
wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
+
+ list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
+ if (ipr_is_gata(res) && res->sata_port) {
+ res->del_from_ml = 1;
+ i++;
+ }
+ }
+
+ if (i) {
+ spin_unlock_irqrestore(ioa_cfg->host->host_lock,
host_lock_flags);
+ schedule_work(&ioa_cfg->work_q);
+ flush_work(&ioa_cfg->work_q);
+ spin_lock_irqsave(ioa_cfg->host->host_lock,
host_lock_flags);
+ }
}
for (i = 0; i < ioa_cfg->hrrq_num; i++) {
@@ -10402,6 +10492,7 @@ static void __ipr_remove(struct pci_dev
flush_work(&ioa_cfg->work_q);
if (ioa_cfg->reset_work_q)
flush_workqueue(ioa_cfg->reset_work_q);
+ flush_workqueue(ioa_cfg->sata_work_q);
INIT_LIST_HEAD(&ioa_cfg->used_res_q);
spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
diff -puN drivers/scsi/ipr.h~ipr_libata_api_change drivers/scsi/ipr.h
--- linux-2.6.git/drivers/scsi/ipr.h~ipr_libata_api_change 2016-08-30
20:55:39.213008779 -0500
+++ linux-2.6.git-bjking1/drivers/scsi/ipr.h 2016-08-30 20:55:39.223008679
-0500
@@ -510,6 +510,7 @@ struct ipr_hrr_queue {
struct list_head hrrq_free_q;
struct list_head hrrq_pending_q;
+ struct list_head hrrq_error_q;
spinlock_t _lock;
spinlock_t *lock;
@@ -1288,6 +1289,7 @@ struct ipr_sata_port {
struct ipr_ioa_cfg *ioa_cfg;
struct ata_port *ap;
struct ipr_resource_entry *res;
+ struct work_struct work;
struct ipr_ioasa_gata ioasa;
};
@@ -1569,6 +1571,7 @@ struct ipr_ioa_cfg {
struct work_struct work_q;
struct workqueue_struct *reset_work_q;
+ struct workqueue_struct *sata_work_q;
wait_queue_head_t reset_wait_q;
wait_queue_head_t msi_wait_q;
_
------------------------------------------------------------------------------
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