[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>

5 files changed, 90 insertions, 76 deletions

diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
index 04a1d7bf678c..c644669a75c2 100644
--- a/drivers/s390/net/claw.c
+++ b/drivers/s390/net/claw.c
@@ -703,7 +703,8 @@ claw_irq_handler(struct ccw_device *cdev,
         if (!cdev->dev.driver_data) {
                 printk(KERN_WARNING "claw: unsolicited interrupt for device:"
                         "%s received c-%02x d-%02x\n",
-                        cdev->dev.bus_id,irb->scsw.cstat, irb->scsw.dstat);
+                       cdev->dev.bus_id, irb->scsw.cmd.cstat,
+                       irb->scsw.cmd.dstat);
 #ifdef FUNCTRACE
                 printk(KERN_INFO "claw: %s() "
                         "exit on line %d\n",__func__,__LINE__);
@@ -732,22 +733,23 @@ claw_irq_handler(struct ccw_device *cdev,
 #ifdef IOTRACE
         printk(KERN_INFO "%s: interrupt for device: %04x "
                 "received c-%02x d-%02x state-%02x\n",
-                dev->name, p_ch->devno, irb->scsw.cstat,
-                irb->scsw.dstat, p_ch->claw_state);
+               dev->name, p_ch->devno, irb->scsw.cmd.cstat,
+               irb->scsw.cmd.dstat, p_ch->claw_state);
 #endif
 
         /* Copy interruption response block. */
         memcpy(p_ch->irb, irb, sizeof(struct irb));
 
         /* Check for good subchannel return code, otherwise error message */
-        if (irb->scsw.cstat  &&  !(irb->scsw.cstat & SCHN_STAT_PCI)) {
+        if (irb->scsw.cmd.cstat && !(irb->scsw.cmd.cstat & SCHN_STAT_PCI)) {
                 printk(KERN_INFO "%s: subchannel check for device: %04x -"
                         " Sch Stat %02x  Dev Stat %02x CPA - %04x\n",
                         dev->name, p_ch->devno,
-                        irb->scsw.cstat, irb->scsw.dstat,irb->scsw.cpa);
+                        irb->scsw.cmd.cstat, irb->scsw.cmd.dstat,
+                        irb->scsw.cmd.cpa);
 #ifdef IOTRACE
                 dumpit((char *)irb,sizeof(struct irb));
-                dumpit((char *)(unsigned long)irb->scsw.cpa,
+                dumpit((char *)(unsigned long)irb->scsw.cmd.cpa,
                         sizeof(struct ccw1));
 #endif
 #ifdef FUNCTRACE
@@ -759,22 +761,24 @@ claw_irq_handler(struct ccw_device *cdev,
         }
 
         /* Check the reason-code of a unit check */
-        if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK) {
+        if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK)
                 ccw_check_unit_check(p_ch, irb->ecw[0]);
-        }
 
         /* State machine to bring the connection up, down and to restart */
-        p_ch->last_dstat = irb->scsw.dstat;
+        p_ch->last_dstat = irb->scsw.cmd.dstat;
 
         switch (p_ch->claw_state) {
                 case CLAW_STOP:/* HALT_IO by claw_release (halt sequence) */
 #ifdef DEBUGMSG
                         printk(KERN_INFO "%s: CLAW_STOP enter\n", dev->name);
 #endif
-                        if (!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) ||
-                        (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) ||
-                        (p_ch->irb->scsw.stctl ==
-                        (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) {
+                        if (!((p_ch->irb->scsw.cmd.stctl &
+                               SCSW_STCTL_SEC_STATUS) ||
+                            (p_ch->irb->scsw.cmd.stctl ==
+                                SCSW_STCTL_STATUS_PEND) ||
+                            (p_ch->irb->scsw.cmd.stctl ==
+                                (SCSW_STCTL_ALERT_STATUS |
+                                 SCSW_STCTL_STATUS_PEND)))) {
 #ifdef FUNCTRACE
                                 printk(KERN_INFO "%s:%s Exit on line %d\n",
                                         dev->name,__func__,__LINE__);
@@ -798,10 +802,13 @@ claw_irq_handler(struct ccw_device *cdev,
                         printk(KERN_INFO "%s: process CLAW_STAT_HALT_IO\n",
                                 dev->name);
 #endif
-                        if (!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) ||
-                        (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) ||
-                        (p_ch->irb->scsw.stctl ==
-                        (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) {
+                        if (!((p_ch->irb->scsw.cmd.stctl &
+                               SCSW_STCTL_SEC_STATUS) ||
+                            (p_ch->irb->scsw.cmd.stctl ==
+                             SCSW_STCTL_STATUS_PEND) ||
+                            (p_ch->irb->scsw.cmd.stctl ==
+                             (SCSW_STCTL_ALERT_STATUS |
+                              SCSW_STCTL_STATUS_PEND)))) {
 #ifdef FUNCTRACE
                                 printk(KERN_INFO "%s:%s Exit on line %d\n",
                                         dev->name,__func__,__LINE__);
@@ -828,8 +835,8 @@ claw_irq_handler(struct ccw_device *cdev,
                                         "interrupt for device:"
                                         "%s received c-%02x d-%02x\n",
                                         cdev->dev.bus_id,
-                                        irb->scsw.cstat,
-                                        irb->scsw.dstat);
+                                        irb->scsw.cmd.cstat,
+                                        irb->scsw.cmd.dstat);
                                 return;
                                 }
 #ifdef DEBUGMSG
@@ -844,7 +851,7 @@ claw_irq_handler(struct ccw_device *cdev,
                         return;
                 case CLAW_START_READ:
                         CLAW_DBF_TEXT(4,trace,"ReadIRQ");
-                        if (p_ch->irb->scsw.dstat & DEV_STAT_UNIT_CHECK) {
+                        if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) {
                                 clear_bit(0, (void *)&p_ch->IO_active);
                                 if ((p_ch->irb->ecw[0] & 0x41) == 0x41 ||
                                     (p_ch->irb->ecw[0] & 0x40) == 0x40 ||
@@ -863,8 +870,8 @@ claw_irq_handler(struct ccw_device *cdev,
                                         CLAW_DBF_TEXT(4,trace,"notrdy");
                                         return;
                         }
-                        if ((p_ch->irb->scsw.cstat & SCHN_STAT_PCI) &&
-                            (p_ch->irb->scsw.dstat==0)) {
+                        if ((p_ch->irb->scsw.cmd.cstat & SCHN_STAT_PCI) &&
+                            (p_ch->irb->scsw.cmd.dstat == 0)) {
                                 if (test_and_set_bit(CLAW_BH_ACTIVE,
                                         (void *)&p_ch->flag_a) == 0) {
                                         tasklet_schedule(&p_ch->tasklet);
@@ -879,10 +886,13 @@ claw_irq_handler(struct ccw_device *cdev,
                                 CLAW_DBF_TEXT(4,trace,"PCI_read");
                                 return;
                         }
-                        if(!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) ||
-                         (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) ||
-                         (p_ch->irb->scsw.stctl ==
-                         (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) {
+                        if (!((p_ch->irb->scsw.cmd.stctl &
+                               SCSW_STCTL_SEC_STATUS) ||
+                             (p_ch->irb->scsw.cmd.stctl ==
+                              SCSW_STCTL_STATUS_PEND) ||
+                             (p_ch->irb->scsw.cmd.stctl ==
+                              (SCSW_STCTL_ALERT_STATUS |
+                               SCSW_STCTL_STATUS_PEND)))) {
 #ifdef FUNCTRACE
                                 printk(KERN_INFO "%s:%s Exit on line %d\n",
                                         dev->name,__func__,__LINE__);
@@ -911,7 +921,7 @@ claw_irq_handler(struct ccw_device *cdev,
                         CLAW_DBF_TEXT(4,trace,"RdIRQXit");
                         return;
                 case CLAW_START_WRITE:
-                        if (p_ch->irb->scsw.dstat & DEV_STAT_UNIT_CHECK) {
+                        if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) {
                                 printk(KERN_INFO "%s: Unit Check Occured in "
                                         "write channel\n",dev->name);
                                 clear_bit(0, (void *)&p_ch->IO_active);
@@ -934,16 +944,19 @@ claw_irq_handler(struct ccw_device *cdev,
                                 CLAW_DBF_TEXT(4,trace,"rstrtwrt");
                                 return;
                         }
-                        if (p_ch->irb->scsw.dstat & DEV_STAT_UNIT_EXCEP) {
+                        if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_EXCEP) {
                                         clear_bit(0, (void *)&p_ch->IO_active);
                                         printk(KERN_INFO "%s: Unit Exception "
                                                 "Occured in write channel\n",
                                                 dev->name);
                         }
-                        if(!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) ||
-                        (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) ||
-                        (p_ch->irb->scsw.stctl ==
-                        (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) {
+                        if (!((p_ch->irb->scsw.cmd.stctl &
+                               SCSW_STCTL_SEC_STATUS) ||
+                             (p_ch->irb->scsw.cmd.stctl ==
+                              SCSW_STCTL_STATUS_PEND) ||
+                             (p_ch->irb->scsw.cmd.stctl ==
+                              (SCSW_STCTL_ALERT_STATUS |
+                               SCSW_STCTL_STATUS_PEND)))) {
 #ifdef FUNCTRACE
                                 printk(KERN_INFO "%s:%s Exit on line %d\n",
                                         dev->name,__func__,__LINE__);
diff --git a/drivers/s390/net/ctcm_fsms.c b/drivers/s390/net/ctcm_fsms.c
index 2a106f3a076d..7e6bd387f4d8 100644
--- a/drivers/s390/net/ctcm_fsms.c
+++ b/drivers/s390/net/ctcm_fsms.c
@@ -257,9 +257,9 @@ static void chx_txdone(fsm_instance *fi, int event, void *arg)
         if (duration > ch->prof.tx_time)
                 ch->prof.tx_time = duration;
 
-        if (ch->irb->scsw.count != 0)
+        if (ch->irb->scsw.cmd.count != 0)
                 ctcm_pr_debug("%s: TX not complete, remaining %d bytes\n",
-                             dev->name, ch->irb->scsw.count);
+                             dev->name, ch->irb->scsw.cmd.count);
         fsm_deltimer(&ch->timer);
         while ((skb = skb_dequeue(&ch->io_queue))) {
                 priv->stats.tx_packets++;
@@ -353,7 +353,7 @@ static void chx_rx(fsm_instance *fi, int event, void *arg)
         struct channel *ch = arg;
         struct net_device *dev = ch->netdev;
         struct ctcm_priv *priv = dev->priv;
-        int len = ch->max_bufsize - ch->irb->scsw.count;
+        int len = ch->max_bufsize - ch->irb->scsw.cmd.count;
         struct sk_buff *skb = ch->trans_skb;
         __u16 block_len = *((__u16 *)skb->data);
         int check_len;
@@ -1234,9 +1234,9 @@ static void ctcmpc_chx_txdone(fsm_instance *fi, int event, void *arg)
         if (duration > ch->prof.tx_time)
                 ch->prof.tx_time = duration;
 
-        if (ch->irb->scsw.count != 0)
+        if (ch->irb->scsw.cmd.count != 0)
                 ctcm_pr_debug("%s: TX not complete, remaining %d bytes\n",
-                                dev->name, ch->irb->scsw.count);
+                                dev->name, ch->irb->scsw.cmd.count);
         fsm_deltimer(&ch->timer);
         while ((skb = skb_dequeue(&ch->io_queue))) {
                 priv->stats.tx_packets++;
@@ -1394,7 +1394,7 @@ static void ctcmpc_chx_rx(fsm_instance *fi, int event, void *arg)
         struct sk_buff          *skb = ch->trans_skb;
         struct sk_buff          *new_skb;
         unsigned long   saveflags = 0;  /* avoids compiler warning */
-        int len = ch->max_bufsize - ch->irb->scsw.count;
+        int len = ch->max_bufsize - ch->irb->scsw.cmd.count;
 
         if (do_debug_data) {
                 CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG, "mpc_ch_rx %s cp:%i %s\n",
diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c
index d52843da4f55..6b13c1c1beb8 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -1236,8 +1236,8 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
         /* Check for unsolicited interrupts. */
         if (cgdev == NULL) {
                 ctcm_pr_warn("ctcm: Got unsolicited irq: %s c-%02x d-%02x\n",
-                            cdev->dev.bus_id, irb->scsw.cstat,
-                            irb->scsw.dstat);
+                            cdev->dev.bus_id, irb->scsw.cmd.cstat,
+                            irb->scsw.cmd.dstat);
                 return;
         }
 
@@ -1266,40 +1266,40 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
                                 "received c-%02x d-%02x\n",
                                 dev->name,
                                 ch->id,
-                                irb->scsw.cstat,
-                                irb->scsw.dstat);
+                                irb->scsw.cmd.cstat,
+                                irb->scsw.cmd.dstat);
 
         /* Copy interruption response block. */
         memcpy(ch->irb, irb, sizeof(struct irb));
 
         /* Check for good subchannel return code, otherwise error message */
-        if (irb->scsw.cstat) {
+        if (irb->scsw.cmd.cstat) {
                 fsm_event(ch->fsm, CTC_EVENT_SC_UNKNOWN, ch);
                 ctcm_pr_warn("%s: subchannel check for dev: %s - %02x %02x\n",
-                            dev->name, ch->id, irb->scsw.cstat,
-                            irb->scsw.dstat);
+                            dev->name, ch->id, irb->scsw.cmd.cstat,
+                            irb->scsw.cmd.dstat);
                 return;
         }
 
         /* Check the reason-code of a unit check */
-        if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK) {
+        if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) {
                 ccw_unit_check(ch, irb->ecw[0]);
                 return;
         }
-        if (irb->scsw.dstat & DEV_STAT_BUSY) {
-                if (irb->scsw.dstat & DEV_STAT_ATTENTION)
+        if (irb->scsw.cmd.dstat & DEV_STAT_BUSY) {
+                if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION)
                         fsm_event(ch->fsm, CTC_EVENT_ATTNBUSY, ch);
                 else
                         fsm_event(ch->fsm, CTC_EVENT_BUSY, ch);
                 return;
         }
-        if (irb->scsw.dstat & DEV_STAT_ATTENTION) {
+        if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
                 fsm_event(ch->fsm, CTC_EVENT_ATTN, ch);
                 return;
         }
-        if ((irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) ||
-            (irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) ||
-            (irb->scsw.stctl ==
+        if ((irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) ||
+            (irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) ||
+            (irb->scsw.cmd.stctl ==
              (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))
                 fsm_event(ch->fsm, CTC_EVENT_FINSTAT, ch);
         else
diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
index dd22f4b37037..586cca21da95 100644
--- a/drivers/s390/net/lcs.c
+++ b/drivers/s390/net/lcs.c
@@ -1327,8 +1327,8 @@ lcs_get_problem(struct ccw_device *cdev, struct irb *irb)
         char *sense;
 
         sense = (char *) irb->ecw;
-        cstat = irb->scsw.cstat;
-        dstat = irb->scsw.dstat;
+        cstat = irb->scsw.cmd.cstat;
+        dstat = irb->scsw.cmd.dstat;
 
         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
@@ -1388,11 +1388,13 @@ lcs_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
         else
                 channel = &card->write;
 
-        cstat = irb->scsw.cstat;
-        dstat = irb->scsw.dstat;
+        cstat = irb->scsw.cmd.cstat;
+        dstat = irb->scsw.cmd.dstat;
         LCS_DBF_TEXT_(5, trace, "Rint%s",cdev->dev.bus_id);
-        LCS_DBF_TEXT_(5, trace, "%4x%4x",irb->scsw.cstat, irb->scsw.dstat);
-        LCS_DBF_TEXT_(5, trace, "%4x%4x",irb->scsw.fctl, irb->scsw.actl);
+        LCS_DBF_TEXT_(5, trace, "%4x%4x", irb->scsw.cmd.cstat,
+                      irb->scsw.cmd.dstat);
+        LCS_DBF_TEXT_(5, trace, "%4x%4x", irb->scsw.cmd.fctl,
+                      irb->scsw.cmd.actl);
 
         /* Check for channel and device errors presented */
         rc = lcs_get_problem(cdev, irb);
@@ -1410,11 +1412,11 @@ lcs_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
         }
         /* How far in the ccw chain have we processed? */
         if ((channel->state != LCS_CH_STATE_INIT) &&
-            (irb->scsw.fctl & SCSW_FCTL_START_FUNC)) {
-                index = (struct ccw1 *) __va((addr_t) irb->scsw.cpa)
+            (irb->scsw.cmd.fctl & SCSW_FCTL_START_FUNC)) {
+                index = (struct ccw1 *) __va((addr_t) irb->scsw.cmd.cpa)
                         - channel->ccws;
-                if ((irb->scsw.actl & SCSW_ACTL_SUSPENDED) ||
-                    (irb->scsw.cstat & SCHN_STAT_PCI))
+                if ((irb->scsw.cmd.actl & SCSW_ACTL_SUSPENDED) ||
+                    (irb->scsw.cmd.cstat & SCHN_STAT_PCI))
                         /* Bloody io subsystem tells us lies about cpa... */
                         index = (index - 1) & (LCS_NUM_BUFFS - 1);
                 while (channel->io_idx != index) {
@@ -1425,25 +1427,24 @@ lcs_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
                 }
         }
 
-        if ((irb->scsw.dstat & DEV_STAT_DEV_END) ||
-            (irb->scsw.dstat & DEV_STAT_CHN_END) ||
-            (irb->scsw.dstat & DEV_STAT_UNIT_CHECK))
+        if ((irb->scsw.cmd.dstat & DEV_STAT_DEV_END) ||
+            (irb->scsw.cmd.dstat & DEV_STAT_CHN_END) ||
+            (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK))
                 /* Mark channel as stopped. */
                 channel->state = LCS_CH_STATE_STOPPED;
-        else if (irb->scsw.actl & SCSW_ACTL_SUSPENDED)
+        else if (irb->scsw.cmd.actl & SCSW_ACTL_SUSPENDED)
                 /* CCW execution stopped on a suspend bit. */
                 channel->state = LCS_CH_STATE_SUSPENDED;
-        if (irb->scsw.fctl & SCSW_FCTL_HALT_FUNC) {
-                if (irb->scsw.cc != 0) {
+        if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
+                if (irb->scsw.cmd.cc != 0) {
                         ccw_device_halt(channel->ccwdev, (addr_t) channel);
                         return;
                 }
                 /* The channel has been stopped by halt_IO. */
                 channel->state = LCS_CH_STATE_HALTED;
         }
-        if (irb->scsw.fctl & SCSW_FCTL_CLEAR_FUNC) {
+        if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC)
                 channel->state = LCS_CH_STATE_CLEARED;
-        }
         /* Do the rest in the tasklet. */
         tasklet_schedule(&channel->irq_tasklet);
 }
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 9a71dae223e8..90db3e444f38 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -735,8 +735,8 @@ static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
         char *sense;
 
         sense = (char *) irb->ecw;
-        cstat = irb->scsw.cstat;
-        dstat = irb->scsw.dstat;
+        cstat = irb->scsw.cmd.cstat;
+        dstat = irb->scsw.cmd.dstat;
 
         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
@@ -823,8 +823,8 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 
         if (__qeth_check_irb_error(cdev, intparm, irb))
                 return;
-        cstat = irb->scsw.cstat;
-        dstat = irb->scsw.dstat;
+        cstat = irb->scsw.cmd.cstat;
+        dstat = irb->scsw.cmd.dstat;
 
         card = CARD_FROM_CDEV(cdev);
         if (!card)
@@ -842,10 +842,10 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
         }
         atomic_set(&channel->irq_pending, 0);
 
-        if (irb->scsw.fctl & (SCSW_FCTL_CLEAR_FUNC))
+        if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
                 channel->state = CH_STATE_STOPPED;
 
-        if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC))
+        if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
                 channel->state = CH_STATE_HALTED;
 
         /*let's wake up immediately on data channel*/