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yaml
---
r: 31115
b: refs/heads/master
c: 445b5b4
h: refs/heads/master
i:
  31113: 8a57c98
  31111: ec33701
v: v3
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Horst Hummel authored and Martin Schwidefsky committed Jun 29, 2006
1 parent dd04bfd commit 4dd401b
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Showing 2 changed files with 75 additions and 72 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: f45a43d847c96949d22e702879e52385a1547f6b
refs/heads/master: 445b5b499e0ca1584ee3aa8af298c9ef8c84d711
145 changes: 74 additions & 71 deletions trunk/drivers/s390/block/dasd_eckd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1521,6 +1521,40 @@ dasd_eckd_ioctl(struct dasd_device *device, unsigned int cmd, void __user *argp)
}
}

/*
* Dump the range of CCWs into 'page' buffer
* and return number of printed chars.
*/
static inline int
dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page)
{
int len, count;
char *datap;

len = 0;
while (from <= to) {
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" CCW %p: %08X %08X DAT:",
from, ((int *) from)[0], ((int *) from)[1]);

/* get pointer to data (consider IDALs) */
if (from->flags & CCW_FLAG_IDA)
datap = (char *) *((addr_t *) (addr_t) from->cda);
else
datap = (char *) ((addr_t) from->cda);

/* dump data (max 32 bytes) */
for (count = 0; count < from->count && count < 32; count++) {
if (count % 8 == 0) len += sprintf(page + len, " ");
if (count % 4 == 0) len += sprintf(page + len, " ");
len += sprintf(page + len, "%02x", datap[count]);
}
len += sprintf(page + len, "\n");
from++;
}
return len;
}

/*
* Print sense data and related channel program.
* Parts are printed because printk buffer is only 1024 bytes.
Expand All @@ -1530,16 +1564,17 @@ dasd_eckd_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
struct irb *irb)
{
char *page;
struct ccw1 *act, *end, *last;
int len, sl, sct, count;
struct ccw1 *first, *last, *fail, *from, *to;
int len, sl, sct;

page = (char *) get_zeroed_page(GFP_ATOMIC);
if (page == NULL) {
DEV_MESSAGE(KERN_ERR, device, " %s",
"No memory to dump sense data");
return;
}
len = sprintf(page, KERN_ERR PRINTK_HEADER
/* dump the sense data */
len = sprintf(page, KERN_ERR PRINTK_HEADER
" I/O status report for device %s:\n",
device->cdev->dev.bus_id);
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
Expand All @@ -1564,87 +1599,55 @@ dasd_eckd_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,

if (irb->ecw[27] & DASD_SENSE_BIT_0) {
/* 24 Byte Sense Data */
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" 24 Byte: %x MSG %x, "
"%s MSGb to SYSOP\n",
irb->ecw[7] >> 4, irb->ecw[7] & 0x0f,
irb->ecw[1] & 0x10 ? "" : "no");
sprintf(page + len, KERN_ERR PRINTK_HEADER
" 24 Byte: %x MSG %x, "
"%s MSGb to SYSOP\n",
irb->ecw[7] >> 4, irb->ecw[7] & 0x0f,
irb->ecw[1] & 0x10 ? "" : "no");
} else {
/* 32 Byte Sense Data */
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" 32 Byte: Format: %x "
"Exception class %x\n",
irb->ecw[6] & 0x0f, irb->ecw[22] >> 4);
sprintf(page + len, KERN_ERR PRINTK_HEADER
" 32 Byte: Format: %x "
"Exception class %x\n",
irb->ecw[6] & 0x0f, irb->ecw[22] >> 4);
}
} else {
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" SORRY - NO VALID SENSE AVAILABLE\n");
sprintf(page + len, KERN_ERR PRINTK_HEADER
" SORRY - NO VALID SENSE AVAILABLE\n");
}
MESSAGE_LOG(KERN_ERR, "%s",
page + sizeof(KERN_ERR PRINTK_HEADER));

/* dump the Channel Program */
/* print first CCWs (maximum 8) */
act = req->cpaddr;
for (last = act; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++);
end = min(act + 8, last);
len = sprintf(page, KERN_ERR PRINTK_HEADER
printk("%s", page);

/* dump the Channel Program (max 140 Bytes per line) */
/* Count CCW and print first CCWs (maximum 1024 % 140 = 7) */
first = req->cpaddr;
for (last = first; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++);
to = min(first + 6, last);
len = sprintf(page, KERN_ERR PRINTK_HEADER
" Related CP in req: %p\n", req);
while (act <= end) {
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" CCW %p: %08X %08X DAT:",
act, ((int *) act)[0], ((int *) act)[1]);
for (count = 0; count < 32 && count < act->count;
count += sizeof(int))
len += sprintf(page + len, " %08X",
((int *) (addr_t) act->cda)
[(count>>2)]);
len += sprintf(page + len, "\n");
act++;
}
MESSAGE_LOG(KERN_ERR, "%s",
page + sizeof(KERN_ERR PRINTK_HEADER));
dasd_eckd_dump_ccw_range(first, to, page + len);
printk("%s", page);

/* print failing CCW area */
/* print failing CCW area (maximum 4) */
/* scsw->cda is either valid or zero */
len = 0;
if (act < ((struct ccw1 *)(addr_t) irb->scsw.cpa) - 2) {
act = ((struct ccw1 *)(addr_t) irb->scsw.cpa) - 2;
len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
}
end = min((struct ccw1 *)(addr_t) irb->scsw.cpa + 2, last);
while (act <= end) {
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" CCW %p: %08X %08X DAT:",
act, ((int *) act)[0], ((int *) act)[1]);
for (count = 0; count < 32 && count < act->count;
count += sizeof(int))
len += sprintf(page + len, " %08X",
((int *) (addr_t) act->cda)
[(count>>2)]);
len += sprintf(page + len, "\n");
act++;
from = ++to;
fail = (struct ccw1 *)(addr_t) irb->scsw.cpa; /* failing CCW */
if (from < fail - 2) {
from = fail - 2; /* there is a gap - print header */
len += sprintf(page, KERN_ERR PRINTK_HEADER "......\n");
}
to = min(fail + 1, last);
len += dasd_eckd_dump_ccw_range(from, to, page + len);

/* print last CCWs */
if (act < last - 2) {
act = last - 2;
/* print last CCWs (maximum 2) */
from = max(from, ++to);
if (from < last - 1) {
from = last - 1; /* there is a gap - print header */
len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
}
while (act <= last) {
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" CCW %p: %08X %08X DAT:",
act, ((int *) act)[0], ((int *) act)[1]);
for (count = 0; count < 32 && count < act->count;
count += sizeof(int))
len += sprintf(page + len, " %08X",
((int *) (addr_t) act->cda)
[(count>>2)]);
len += sprintf(page + len, "\n");
act++;
}
len += dasd_eckd_dump_ccw_range(from, last, page + len);
if (len > 0)
MESSAGE_LOG(KERN_ERR, "%s",
page + sizeof(KERN_ERR PRINTK_HEADER));
printk("%s", page);
free_page((unsigned long) page);
}

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