[S390] cio: introduce fcx enabled scsw format

Extend the scsw data structure to the format required by fcx. Also
provide helper functions for easier access to fields which are present
in both the traditional as well as the modified format.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

9 files changed, 48 insertions, 45 deletions

diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 3e5653c92f4b..310eda82cde2 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -385,8 +385,8 @@ raw3215_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
 
         raw = cdev->dev.driver_data;
         req = (struct raw3215_req *) intparm;
-        cstat = irb->scsw.cstat;
-        dstat = irb->scsw.dstat;
+        cstat = irb->scsw.cmd.cstat;
+        dstat = irb->scsw.cmd.dstat;
         if (cstat != 0) {
                 raw->message = KERN_WARNING
                         "Got nonzero channel status in raw3215_irq "
@@ -415,7 +415,7 @@ raw3215_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
                         return;              /* That shouldn't happen ... */
                 if (req->type == RAW3215_READ) {
                         /* store residual count, then wait for device end */
-                        req->residual = irb->scsw.count;
+                        req->residual = irb->scsw.cmd.count;
                 }
                 if (dstat == 0x08)
                         break;
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c
index 0b040557db02..3c07974886ed 100644
--- a/drivers/s390/char/con3270.c
+++ b/drivers/s390/char/con3270.c
@@ -411,15 +411,15 @@ static int
 con3270_irq(struct con3270 *cp, struct raw3270_request *rq, struct irb *irb)
 {
         /* Handle ATTN. Schedule tasklet to read aid. */
-        if (irb->scsw.dstat & DEV_STAT_ATTENTION)
+        if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION)
                 con3270_issue_read(cp);
 
         if (rq) {
-                if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK)
+                if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK)
                         rq->rc = -EIO;
                 else
                         /* Normal end. Copy residual count. */
-                        rq->rescnt = irb->scsw.count;
+                        rq->rescnt = irb->scsw.cmd.count;
         }
         return RAW3270_IO_DONE;
 }
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index ef36f2132aa4..f0d67af96402 100644
--- a/drivers/s390/char/fs3270.c
+++ b/drivers/s390/char/fs3270.c
@@ -216,17 +216,17 @@ static int
 fs3270_irq(struct fs3270 *fp, struct raw3270_request *rq, struct irb *irb)
 {
         /* Handle ATTN. Set indication and wake waiters for attention. */
-        if (irb->scsw.dstat & DEV_STAT_ATTENTION) {
+        if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
                 fp->attention = 1;
                 wake_up(&fp->wait);
         }
 
         if (rq) {
-                if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK)
+                if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK)
                         rq->rc = -EIO;
                 else
                         /* Normal end. Copy residual count. */
-                        rq->rescnt = irb->scsw.count;
+                        rq->rescnt = irb->scsw.cmd.count;
         }
         return RAW3270_IO_DONE;
 }
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index 848ef7e8523f..efce32e97be2 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -372,17 +372,17 @@ raw3270_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
 
         if (IS_ERR(irb))
                 rc = RAW3270_IO_RETRY;
-        else if (irb->scsw.fctl & SCSW_FCTL_HALT_FUNC) {
+        else if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
                 rq->rc = -EIO;
                 rc = RAW3270_IO_DONE;
-        } else if (irb->scsw.dstat ==  (DEV_STAT_CHN_END | DEV_STAT_DEV_END |
-                                        DEV_STAT_UNIT_EXCEP)) {
+        } else if (irb->scsw.cmd.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END |
+                                           DEV_STAT_UNIT_EXCEP)) {
                 /* Handle CE-DE-UE and subsequent UDE */
                 set_bit(RAW3270_FLAGS_BUSY, &rp->flags);
                 rc = RAW3270_IO_BUSY;
         } else if (test_bit(RAW3270_FLAGS_BUSY, &rp->flags)) {
                 /* Wait for UDE if busy flag is set. */
-                if (irb->scsw.dstat & DEV_STAT_DEV_END) {
+                if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) {
                         clear_bit(RAW3270_FLAGS_BUSY, &rp->flags);
                         /* Got it, now retry. */
                         rc = RAW3270_IO_RETRY;
@@ -497,7 +497,7 @@ raw3270_init_irq(struct raw3270_view *view, struct raw3270_request *rq,
          * Unit-Check Processing:
          * Expect Command Reject or Intervention Required.
          */
-        if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK) {
+        if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) {
                 /* Request finished abnormally. */
                 if (irb->ecw[0] & SNS0_INTERVENTION_REQ) {
                         set_bit(RAW3270_FLAGS_BUSY, &view->dev->flags);
@@ -505,16 +505,16 @@ raw3270_init_irq(struct raw3270_view *view, struct raw3270_request *rq,
                 }
         }
         if (rq) {
-                if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK) {
+                if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) {
                         if (irb->ecw[0] & SNS0_CMD_REJECT)
                                 rq->rc = -EOPNOTSUPP;
                         else
                                 rq->rc = -EIO;
                 } else
                         /* Request finished normally. Copy residual count. */
-                        rq->rescnt = irb->scsw.count;
+                        rq->rescnt = irb->scsw.cmd.count;
         }
-        if (irb->scsw.dstat & DEV_STAT_ATTENTION) {
+        if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
                 set_bit(RAW3270_FLAGS_ATTN, &view->dev->flags);
                 wake_up(&raw3270_wait_queue);
         }
diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c
index 874adf365e46..22ca34361ed7 100644
--- a/drivers/s390/char/tape_34xx.c
+++ b/drivers/s390/char/tape_34xx.c
@@ -196,7 +196,7 @@ tape_34xx_erp_retry(struct tape_request *request)
 static int
 tape_34xx_unsolicited_irq(struct tape_device *device, struct irb *irb)
 {
-        if (irb->scsw.dstat == 0x85 /* READY */) {
+        if (irb->scsw.cmd.dstat == 0x85) { /* READY */
                 /* A medium was inserted in the drive. */
                 DBF_EVENT(6, "xuud med\n");
                 tape_34xx_delete_sbid_from(device, 0);
@@ -844,22 +844,22 @@ tape_34xx_irq(struct tape_device *device, struct tape_request *request,
         if (request == NULL)
                 return tape_34xx_unsolicited_irq(device, irb);
 
-        if ((irb->scsw.dstat & DEV_STAT_UNIT_EXCEP) &&
-            (irb->scsw.dstat & DEV_STAT_DEV_END) &&
+        if ((irb->scsw.cmd.dstat & DEV_STAT_UNIT_EXCEP) &&
+            (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) &&
             (request->op == TO_WRI)) {
                 /* Write at end of volume */
                 PRINT_INFO("End of volume\n"); /* XXX */
                 return tape_34xx_erp_failed(request, -ENOSPC);
         }
 
-        if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK)
+        if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK)
                 return tape_34xx_unit_check(device, request, irb);
 
-        if (irb->scsw.dstat & DEV_STAT_DEV_END) {
+        if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) {
                 /*
                  * A unit exception occurs on skipping over a tapemark block.
                  */
-                if (irb->scsw.dstat & DEV_STAT_UNIT_EXCEP) {
+                if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_EXCEP) {
                         if (request->op == TO_BSB || request->op == TO_FSB)
                                 request->rescnt++;
                         else
diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c
index 42ce7915fc5d..839987618ffd 100644
--- a/drivers/s390/char/tape_3590.c
+++ b/drivers/s390/char/tape_3590.c
@@ -837,13 +837,13 @@ tape_3590_erp_retry(struct tape_device *device, struct tape_request *request,
 static int
 tape_3590_unsolicited_irq(struct tape_device *device, struct irb *irb)
 {
-        if (irb->scsw.dstat == DEV_STAT_CHN_END)
+        if (irb->scsw.cmd.dstat == DEV_STAT_CHN_END)
                 /* Probably result of halt ssch */
                 return TAPE_IO_PENDING;
-        else if (irb->scsw.dstat == 0x85)
+        else if (irb->scsw.cmd.dstat == 0x85)
                 /* Device Ready */
                 DBF_EVENT(3, "unsol.irq! tape ready: %08x\n", device->cdev_id);
-        else if (irb->scsw.dstat & DEV_STAT_ATTENTION) {
+        else if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
                 tape_3590_schedule_work(device, TO_READ_ATTMSG);
         } else {
                 DBF_EVENT(3, "unsol.irq! dev end: %08x\n", device->cdev_id);
@@ -1515,18 +1515,19 @@ tape_3590_irq(struct tape_device *device, struct tape_request *request,
         if (request == NULL)
                 return tape_3590_unsolicited_irq(device, irb);
 
-        if ((irb->scsw.dstat & DEV_STAT_UNIT_EXCEP) &&
-            (irb->scsw.dstat & DEV_STAT_DEV_END) && (request->op == TO_WRI)) {
+        if ((irb->scsw.cmd.dstat & DEV_STAT_UNIT_EXCEP) &&
+            (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) &&
+            (request->op == TO_WRI)) {
                 /* Write at end of volume */
                 DBF_EVENT(2, "End of volume\n");
                 return tape_3590_erp_failed(device, request, irb, -ENOSPC);
         }
 
-        if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK)
+        if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK)
                 return tape_3590_unit_check(device, request, irb);
 
-        if (irb->scsw.dstat & DEV_STAT_DEV_END) {
-                if (irb->scsw.dstat == DEV_STAT_UNIT_EXCEP) {
+        if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) {
+                if (irb->scsw.cmd.dstat == DEV_STAT_UNIT_EXCEP) {
                         if (request->op == TO_FSB || request->op == TO_BSB)
                                 request->rescnt++;
                         else
@@ -1536,12 +1537,12 @@ tape_3590_irq(struct tape_device *device, struct tape_request *request,
                 return tape_3590_done(device, request);
         }
 
-        if (irb->scsw.dstat & DEV_STAT_CHN_END) {
+        if (irb->scsw.cmd.dstat & DEV_STAT_CHN_END) {
                 DBF_EVENT(2, "cannel end\n");
                 return TAPE_IO_PENDING;
         }
 
-        if (irb->scsw.dstat & DEV_STAT_ATTENTION) {
+        if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
                 DBF_EVENT(2, "Unit Attention when busy..\n");
                 return TAPE_IO_PENDING;
         }
diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c
index c20e3c548343..181a5441af16 100644
--- a/drivers/s390/char/tape_core.c
+++ b/drivers/s390/char/tape_core.c
@@ -839,7 +839,7 @@ tape_dump_sense(struct tape_device* device, struct tape_request *request,
 
         PRINT_INFO("-------------------------------------------------\n");
         PRINT_INFO("DSTAT : %02x  CSTAT: %02x   CPA: %04x\n",
-                   irb->scsw.dstat, irb->scsw.cstat, irb->scsw.cpa);
+                   irb->scsw.cmd.dstat, irb->scsw.cmd.cstat, irb->scsw.cmd.cpa);
         PRINT_INFO("DEVICE: %s\n", device->cdev->dev.bus_id);
         if (request != NULL)
                 PRINT_INFO("OP    : %s\n", tape_op_verbose[request->op]);
@@ -867,7 +867,7 @@ tape_dump_sense_dbf(struct tape_device *device, struct tape_request *request,
         else
                 op = "---";
         DBF_EVENT(3, "DSTAT : %02x   CSTAT: %02x\n",
-                  irb->scsw.dstat,irb->scsw.cstat);
+                  irb->scsw.cmd.dstat, irb->scsw.cmd.cstat);
         DBF_EVENT(3, "DEVICE: %08x OP\t: %s\n", device->cdev_id, op);
         sptr = (unsigned int *) irb->ecw;
         DBF_EVENT(3, "%08x %08x\n", sptr[0], sptr[1]);
@@ -1083,10 +1083,11 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
          * error might still apply. So we just schedule the request to be
          * started later.
          */
-        if (irb->scsw.cc != 0 && (irb->scsw.fctl & SCSW_FCTL_START_FUNC) &&
+        if (irb->scsw.cmd.cc != 0 &&
+            (irb->scsw.cmd.fctl & SCSW_FCTL_START_FUNC) &&
             (request->status == TAPE_REQUEST_IN_IO)) {
                 DBF_EVENT(3,"(%08x): deferred cc=%i, fctl=%i. restarting\n",
-                        device->cdev_id, irb->scsw.cc, irb->scsw.fctl);
+                        device->cdev_id, irb->scsw.cmd.cc, irb->scsw.cmd.fctl);
                 request->status = TAPE_REQUEST_QUEUED;
                 schedule_delayed_work(&device->tape_dnr, HZ);
                 return;
@@ -1094,8 +1095,8 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
 
         /* May be an unsolicited irq */
         if(request != NULL)
-                request->rescnt = irb->scsw.count;
-        else if ((irb->scsw.dstat == 0x85 || irb->scsw.dstat == 0x80) &&
+                request->rescnt = irb->scsw.cmd.count;
+        else if ((irb->scsw.cmd.dstat == 0x85 || irb->scsw.cmd.dstat == 0x80) &&
                  !list_empty(&device->req_queue)) {
                 /* Not Ready to Ready after long busy ? */
                 struct tape_request *req;
@@ -1111,7 +1112,7 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
                         return;
                 }
         }
-        if (irb->scsw.dstat != 0x0c) {
+        if (irb->scsw.cmd.dstat != 0x0c) {
                 /* Set the 'ONLINE' flag depending on sense byte 1 */
                 if(*(((__u8 *) irb->ecw) + 1) & SENSE_DRIVE_ONLINE)
                         device->tape_generic_status |= GMT_ONLINE(~0);
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index 5043150019ac..e4ba8bdce32e 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -663,7 +663,7 @@ static int
 tty3270_irq(struct tty3270 *tp, struct raw3270_request *rq, struct irb *irb)
 {
         /* Handle ATTN. Schedule tasklet to read aid. */
-        if (irb->scsw.dstat & DEV_STAT_ATTENTION) {
+        if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
                 if (!tp->throttle)
                         tty3270_issue_read(tp, 0);
                 else
@@ -671,11 +671,11 @@ tty3270_irq(struct tty3270 *tp, struct raw3270_request *rq, struct irb *irb)
         }
 
         if (rq) {
-                if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK)
+                if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK)
                         rq->rc = -EIO;
                 else
                         /* Normal end. Copy residual count. */
-                        rq->rescnt = irb->scsw.count;
+                        rq->rescnt = irb->scsw.cmd.count;
         }
         return RAW3270_IO_DONE;
 }
diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c
index 83ae9a852f00..49cba9effe89 100644
--- a/drivers/s390/char/vmur.c
+++ b/drivers/s390/char/vmur.c
@@ -277,7 +277,8 @@ static void ur_int_handler(struct ccw_device *cdev, unsigned long intparm,
         struct urdev *urd;
 
         TRACE("ur_int_handler: intparm=0x%lx cstat=%02x dstat=%02x res=%u\n",
-              intparm, irb->scsw.cstat, irb->scsw.dstat, irb->scsw.count);
+              intparm, irb->scsw.cmd.cstat, irb->scsw.cmd.dstat,
+              irb->scsw.cmd.count);
 
         if (!intparm) {
                 TRACE("ur_int_handler: unsolicited interrupt\n");
@@ -288,7 +289,7 @@ static void ur_int_handler(struct ccw_device *cdev, unsigned long intparm,
         /* On special conditions irb is an error pointer */
         if (IS_ERR(irb))
                 urd->io_request_rc = PTR_ERR(irb);
-        else if (irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
+        else if (irb->scsw.cmd.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
                 urd->io_request_rc = 0;
         else
                 urd->io_request_rc = -EIO;