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path: root/drivers/s390/cio/chsc.c
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Diffstat (limited to 'drivers/s390/cio/chsc.c')
-rw-r--r--drivers/s390/cio/chsc.c63
1 files changed, 35 insertions, 28 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index fa3c23b80e3a..aff5d149b729 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -104,8 +104,8 @@ chsc_get_sch_desc_irq(struct subchannel *sch, void *page)
.code = 0x0004,
};
- ssd_area->f_sch = sch->irq;
- ssd_area->l_sch = sch->irq;
+ ssd_area->f_sch = sch->schid.sch_no;
+ ssd_area->l_sch = sch->schid.sch_no;
ccode = chsc(ssd_area);
if (ccode > 0) {
@@ -147,7 +147,8 @@ chsc_get_sch_desc_irq(struct subchannel *sch, void *page)
*/
if (ssd_area->st > 3) { /* uhm, that looks strange... */
CIO_CRW_EVENT(0, "Strange subchannel type %d"
- " for sch %04x\n", ssd_area->st, sch->irq);
+ " for sch %04x\n", ssd_area->st,
+ sch->schid.sch_no);
/*
* There may have been a new subchannel type defined in the
* time since this code was written; since we don't know which
@@ -157,7 +158,7 @@ chsc_get_sch_desc_irq(struct subchannel *sch, void *page)
} else {
const char *type[4] = {"I/O", "chsc", "message", "ADM"};
CIO_CRW_EVENT(6, "ssd: sch %04x is %s subchannel\n",
- sch->irq, type[ssd_area->st]);
+ sch->schid.sch_no, type[ssd_area->st]);
sch->ssd_info.valid = 1;
sch->ssd_info.type = ssd_area->st;
@@ -232,7 +233,7 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
mask = 0x80 >> j;
spin_lock(&sch->lock);
- stsch(sch->irq, &schib);
+ stsch(sch->schid, &schib);
if (!schib.pmcw.dnv)
goto out_unreg;
memcpy(&sch->schib, &schib, sizeof(struct schib));
@@ -284,7 +285,7 @@ out_unlock:
out_unreg:
spin_unlock(&sch->lock);
sch->lpm = 0;
- if (css_enqueue_subchannel_slow(sch->irq)) {
+ if (css_enqueue_subchannel_slow(sch->schid)) {
css_clear_subchannel_slow_list();
need_rescan = 1;
}
@@ -337,7 +338,7 @@ s390_process_res_acc_sch(u8 chpid, __u16 fla, u32 fla_mask,
* new path information and eventually check for logically
* offline chpids.
*/
- ccode = stsch(sch->irq, &sch->schib);
+ ccode = stsch(sch->schid, &sch->schib);
if (ccode > 0)
return 0;
@@ -348,7 +349,8 @@ static int
s390_process_res_acc (u8 chpid, __u16 fla, u32 fla_mask)
{
struct subchannel *sch;
- int irq, rc;
+ int rc;
+ struct subchannel_id schid;
char dbf_txt[15];
sprintf(dbf_txt, "accpr%x", chpid);
@@ -370,10 +372,11 @@ s390_process_res_acc (u8 chpid, __u16 fla, u32 fla_mask)
return 0; /* no need to do the rest */
rc = 0;
- for (irq = 0; irq < __MAX_SUBCHANNELS; irq++) {
+ init_subchannel_id(&schid);
+ do {
int chp_mask, old_lpm;
- sch = get_subchannel_by_schid(irq);
+ sch = get_subchannel_by_schid(schid);
if (!sch) {
struct schib schib;
int ret;
@@ -385,7 +388,7 @@ s390_process_res_acc (u8 chpid, __u16 fla, u32 fla_mask)
* that beast may be on we'll have to do a stsch
* on all devices, grr...
*/
- if (stsch(irq, &schib)) {
+ if (stsch(schid, &schib)) {
/* We're through */
if (need_rescan)
rc = -EAGAIN;
@@ -396,7 +399,7 @@ s390_process_res_acc (u8 chpid, __u16 fla, u32 fla_mask)
continue;
}
/* Put it on the slow path. */
- ret = css_enqueue_subchannel_slow(irq);
+ ret = css_enqueue_subchannel_slow(schid);
if (ret) {
css_clear_subchannel_slow_list();
need_rescan = 1;
@@ -428,7 +431,7 @@ s390_process_res_acc (u8 chpid, __u16 fla, u32 fla_mask)
put_device(&sch->dev);
if (fla_mask == 0xffff)
break;
- }
+ } while (schid.sch_no++ < __MAX_SUBCHANNEL);
return rc;
}
@@ -608,7 +611,8 @@ static int
chp_add(int chpid)
{
struct subchannel *sch;
- int irq, ret, rc;
+ int ret, rc;
+ struct subchannel_id schid;
char dbf_txt[15];
if (!get_chp_status(chpid))
@@ -618,14 +622,15 @@ chp_add(int chpid)
CIO_TRACE_EVENT(2, dbf_txt);
rc = 0;
- for (irq = 0; irq < __MAX_SUBCHANNELS; irq++) {
+ init_subchannel_id(&schid);
+ do {
int i;
- sch = get_subchannel_by_schid(irq);
+ sch = get_subchannel_by_schid(schid);
if (!sch) {
struct schib schib;
- if (stsch(irq, &schib)) {
+ if (stsch(schid, &schib)) {
/* We're through */
if (need_rescan)
rc = -EAGAIN;
@@ -636,7 +641,7 @@ chp_add(int chpid)
continue;
}
/* Put it on the slow path. */
- ret = css_enqueue_subchannel_slow(irq);
+ ret = css_enqueue_subchannel_slow(schid);
if (ret) {
css_clear_subchannel_slow_list();
need_rescan = 1;
@@ -648,7 +653,7 @@ chp_add(int chpid)
spin_lock(&sch->lock);
for (i=0; i<8; i++)
if (sch->schib.pmcw.chpid[i] == chpid) {
- if (stsch(sch->irq, &sch->schib) != 0) {
+ if (stsch(sch->schid, &sch->schib) != 0) {
/* Endgame. */
spin_unlock(&sch->lock);
return rc;
@@ -669,7 +674,7 @@ chp_add(int chpid)
spin_unlock(&sch->lock);
put_device(&sch->dev);
- }
+ } while (schid.sch_no++ < __MAX_SUBCHANNEL);
return rc;
}
@@ -702,7 +707,7 @@ __check_for_io_and_kill(struct subchannel *sch, int index)
if (!device_is_online(sch))
/* cio could be doing I/O. */
return 0;
- cc = stsch(sch->irq, &sch->schib);
+ cc = stsch(sch->schid, &sch->schib);
if (cc)
return 0;
if (sch->schib.scsw.actl && sch->schib.pmcw.lpum == (0x80 >> index)) {
@@ -743,7 +748,7 @@ __s390_subchannel_vary_chpid(struct subchannel *sch, __u8 chpid, int on)
* just varied off path. Then kill it.
*/
if (!__check_for_io_and_kill(sch, chp) && !sch->lpm) {
- if (css_enqueue_subchannel_slow(sch->irq)) {
+ if (css_enqueue_subchannel_slow(sch->schid)) {
css_clear_subchannel_slow_list();
need_rescan = 1;
}
@@ -789,7 +794,8 @@ static int
s390_vary_chpid( __u8 chpid, int on)
{
char dbf_text[15];
- int status, irq, ret;
+ int status, ret;
+ struct subchannel_id schid;
struct subchannel *sch;
sprintf(dbf_text, on?"varyon%x":"varyoff%x", chpid);
@@ -818,26 +824,27 @@ s390_vary_chpid( __u8 chpid, int on)
if (!on)
goto out;
/* Scan for new devices on varied on path. */
- for (irq = 0; irq < __MAX_SUBCHANNELS; irq++) {
+ init_subchannel_id(&schid);
+ do {
struct schib schib;
if (need_rescan)
break;
- sch = get_subchannel_by_schid(irq);
+ sch = get_subchannel_by_schid(schid);
if (sch) {
put_device(&sch->dev);
continue;
}
- if (stsch(irq, &schib))
+ if (stsch(schid, &schib))
/* We're through */
break;
/* Put it on the slow path. */
- ret = css_enqueue_subchannel_slow(irq);
+ ret = css_enqueue_subchannel_slow(schid);
if (ret) {
css_clear_subchannel_slow_list();
need_rescan = 1;
}
- }
+ } while (schid.sch_no++ < __MAX_SUBCHANNEL);
out:
if (need_rescan || css_slow_subchannels_exist())
queue_work(slow_path_wq, &slow_path_work);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 18:53:49 +0000