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-rw-r--r--drivers/s390/cio/device.c13
-rw-r--r--drivers/s390/cio/device_fsm.c5
-rw-r--r--drivers/s390/cio/device_ops.c8
-rw-r--r--drivers/s390/cio/qdio_main.c28
4 files changed, 44 insertions, 10 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index f95d12345d98..920f550bc313 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -363,10 +363,8 @@ int ccw_device_set_online(struct ccw_device *cdev)
spin_lock_irq(cdev->ccwlock);
ret = ccw_device_online(cdev);
- spin_unlock_irq(cdev->ccwlock);
- if (ret == 0)
- wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev));
- else {
+ if (ret) {
+ spin_unlock_irq(cdev->ccwlock);
CIO_MSG_EVENT(0, "ccw_device_online returned %d, "
"device 0.%x.%04x\n",
ret, cdev->private->dev_id.ssid,
@@ -375,7 +373,12 @@ int ccw_device_set_online(struct ccw_device *cdev)
put_device(&cdev->dev);
return ret;
}
- spin_lock_irq(cdev->ccwlock);
+ /* Wait until a final state is reached */
+ while (!dev_fsm_final_state(cdev)) {
+ spin_unlock_irq(cdev->ccwlock);
+ wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev));
+ spin_lock_irq(cdev->ccwlock);
+ }
/* Check if online processing was successful */
if ((cdev->private->state != DEV_STATE_ONLINE) &&
(cdev->private->state != DEV_STATE_W4SENSE)) {
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 65d8b2cfd626..42791fa0b80e 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -504,6 +504,11 @@ callback:
ccw_device_done(cdev, DEV_STATE_ONLINE);
/* Deliver fake irb to device driver, if needed. */
if (cdev->private->flags.fake_irb) {
+ CIO_MSG_EVENT(2, "fakeirb: deliver device 0.%x.%04x intparm %lx type=%d\n",
+ cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno,
+ cdev->private->intparm,
+ cdev->private->flags.fake_irb);
create_fake_irb(&cdev->private->dma_area->irb,
cdev->private->flags.fake_irb);
cdev->private->flags.fake_irb = 0;
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 40c97f873075..acd6790dba4d 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -208,6 +208,10 @@ int ccw_device_start_timeout_key(struct ccw_device *cdev, struct ccw1 *cpa,
if (!cdev->private->flags.fake_irb) {
cdev->private->flags.fake_irb = FAKE_CMD_IRB;
cdev->private->intparm = intparm;
+ CIO_MSG_EVENT(2, "fakeirb: queue device 0.%x.%04x intparm %lx type=%d\n",
+ cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno, intparm,
+ cdev->private->flags.fake_irb);
return 0;
} else
/* There's already a fake I/O around. */
@@ -551,6 +555,10 @@ int ccw_device_tm_start_timeout_key(struct ccw_device *cdev, struct tcw *tcw,
if (!cdev->private->flags.fake_irb) {
cdev->private->flags.fake_irb = FAKE_TM_IRB;
cdev->private->intparm = intparm;
+ CIO_MSG_EVENT(2, "fakeirb: queue device 0.%x.%04x intparm %lx type=%d\n",
+ cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno, intparm,
+ cdev->private->flags.fake_irb);
return 0;
} else
/* There's already a fake I/O around. */
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 3d9f0834c78b..a1cb39f4b7a2 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -722,8 +722,8 @@ static void qdio_handle_activate_check(struct qdio_irq *irq_ptr,
lgr_info_log();
}
-static void qdio_establish_handle_irq(struct qdio_irq *irq_ptr, int cstat,
- int dstat)
+static int qdio_establish_handle_irq(struct qdio_irq *irq_ptr, int cstat,
+ int dstat, int dcc)
{
DBF_DEV_EVENT(DBF_INFO, irq_ptr, "qest irq");
@@ -731,15 +731,18 @@ static void qdio_establish_handle_irq(struct qdio_irq *irq_ptr, int cstat,
goto error;
if (dstat & ~(DEV_STAT_DEV_END | DEV_STAT_CHN_END))
goto error;
+ if (dcc == 1)
+ return -EAGAIN;
if (!(dstat & DEV_STAT_DEV_END))
goto error;
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ESTABLISHED);
- return;
+ return 0;
error:
DBF_ERROR("%4x EQ:error", irq_ptr->schid.sch_no);
DBF_ERROR("ds: %2x cs:%2x", dstat, cstat);
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
+ return -EIO;
}
/* qdio interrupt handler */
@@ -748,7 +751,7 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
{
struct qdio_irq *irq_ptr = cdev->private->qdio_data;
struct subchannel_id schid;
- int cstat, dstat;
+ int cstat, dstat, rc, dcc;
if (!intparm || !irq_ptr) {
ccw_device_get_schid(cdev, &schid);
@@ -768,10 +771,12 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
qdio_irq_check_sense(irq_ptr, irb);
cstat = irb->scsw.cmd.cstat;
dstat = irb->scsw.cmd.dstat;
+ dcc = scsw_cmd_is_valid_cc(&irb->scsw) ? irb->scsw.cmd.cc : 0;
+ rc = 0;
switch (irq_ptr->state) {
case QDIO_IRQ_STATE_INACTIVE:
- qdio_establish_handle_irq(irq_ptr, cstat, dstat);
+ rc = qdio_establish_handle_irq(irq_ptr, cstat, dstat, dcc);
break;
case QDIO_IRQ_STATE_CLEANUP:
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
@@ -785,12 +790,25 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
if (cstat || dstat)
qdio_handle_activate_check(irq_ptr, intparm, cstat,
dstat);
+ else if (dcc == 1)
+ rc = -EAGAIN;
break;
case QDIO_IRQ_STATE_STOPPED:
break;
default:
WARN_ON_ONCE(1);
}
+
+ if (rc == -EAGAIN) {
+ DBF_DEV_EVENT(DBF_INFO, irq_ptr, "qint retry");
+ rc = ccw_device_start(cdev, irq_ptr->ccw, intparm, 0, 0);
+ if (!rc)
+ return;
+ DBF_ERROR("%4x RETRY ERR", irq_ptr->schid.sch_no);
+ DBF_ERROR("rc:%4x", rc);
+ qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
+ }
+
wake_up(&cdev->private->wait_q);
}
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-26 05:56:11 +0000