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[PATCH] cciss: SCSI tape info for /proc

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Add SCSI host and device info not elsewhere available to /proc/scsi/cciss/*
Namely, connect cciss device instance with scsi host number, and give scsi
host number, bus, target, lun, devicetype, and 8-byte cciss LUNID for each
tapedrive/medium changer attached to a controller

For instance:

# cat /proc/scsi/cciss/2
cciss0: SCSI host: 2
c2b0t0l0 01 0x0000000000000001

Signed-off-by: Stephen M. Cameron <steve.cameron@hp.com>
Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Mike Miller 2005-09-13 01:25:26 -07:00 committed by Linus Torvalds
parent 47922d068e
commit b9f0bd0895
1 changed files with 23 additions and 2 deletions
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25
drivers/block/cciss_scsi.c
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@ -1144,6 +1144,7 @@ cciss_scsi_proc_info(struct Scsi_Host *sh,
int buflen, datalen;
ctlr_info_t *ci;
int i;
int cntl_num;
@ -1154,8 +1155,28 @@ cciss_scsi_proc_info(struct Scsi_Host *sh,
cntl_num = ci->ctlr; /* Get our index into the hba[] array */
if (func == 0) { /* User is reading from /proc/scsi/ciss*?/?* */
buflen = sprintf(buffer, "hostnum=%d\n", sh->host_no);
buflen = sprintf(buffer, "cciss%d: SCSI host: %d\n",
cntl_num, sh->host_no);
/* this information is needed by apps to know which cciss
device corresponds to which scsi host number without
having to open a scsi target device node. The device
information is not a duplicate of /proc/scsi/scsi because
the two may be out of sync due to scsi hotplug, rather
this info is for an app to be able to use to know how to
get them back in sync. */
for (i=0;i<ccissscsi[cntl_num].ndevices;i++) {
struct cciss_scsi_dev_t *sd = &ccissscsi[cntl_num].dev[i];
buflen += sprintf(&buffer[buflen], "c%db%dt%dl%d %02d "
"0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
sh->host_no, sd->bus, sd->target, sd->lun,
sd->devtype,
sd->scsi3addr[0], sd->scsi3addr[1],
sd->scsi3addr[2], sd->scsi3addr[3],
sd->scsi3addr[4], sd->scsi3addr[5],
sd->scsi3addr[6], sd->scsi3addr[7]);
}
datalen = buflen - offset;
if (datalen < 0) { /* they're reading past EOF. */
datalen = 0;
@ -1417,7 +1438,7 @@ cciss_proc_tape_report(int ctlr, unsigned char *buffer, off_t *pos, off_t *len)
CPQ_TAPE_LOCK(ctlr, flags);
size = sprintf(buffer + *len,
" Sequential access devices: %d\n\n",
"Sequential access devices: %d\n\n",
ccissscsi[ctlr].ndevices);
CPQ_TAPE_UNLOCK(ctlr, flags);
*pos += size; *len += size;