Date: Thu, 27 May 1999 11:17:46 -0400 (EDT) From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> To: "John W. DeBoskey" <jwd@unx.sas.com> Cc: freebsd-current@FreeBSD.ORG Subject: Re: cvs commit: src/sys/i386/isa ida.c Message-ID: <199905271517.LAA19291@khavrinen.lcs.mit.edu> In-Reply-To: <199905270323.XAA66917@bb01f39.unx.sas.com> References: <199905270323.XAA66917@bb01f39.unx.sas.com>
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<<On Wed, 26 May 1999 23:23:27 -0400 (EDT), "John W. DeBoskey" <jwd@unx.sas.com> said:
> I have/use Dell enclosures. These show-up at boot-time as:
> pass6 at ahc0 bus 0 target 6 lun 0
> pass6: <DELL 8UWS BACKPLANE 5> Fixed Processor SCSI-2 device
> pass6: 3.300MB/s transfers
If they implement the SAF-TE standard, then they will return 50 bytes
of inquire data; after the usual SCSI standard data comes the string
`SAF-TE'. Here is an example, using the old `libscsi' interface and
some appropriate structure definitions:
static int
is_safte(int fd, struct hsbp *hs)
{
int i;
char *cp;
struct scsireq req;
struct inquire_response resp;
struct encl_config encl;
struct hsbp_info *info = &hs->info;
scsireq_reset(&req);
scsireq_build(&req, sizeof resp, (char *)&resp, SCCMD_READ,
"12 v:b3 0:b5 0 0 v 0", (int)info->hi_sc_lun,
(int)sizeof resp);
scsireq_enter(fd, &req);
/*
* If we had an error this early, we can't possibly work with this
* device. Also return false if we didn't get enough data back
* to be a valid SAF-TE response.
*/
if (SCSIREQ_ERROR((&req)) || req.datalen_used < sizeof resp)
return 0;
if (strncmp(resp.safte_id, "SAF-TE", 6) != 0)
return 0;
if (strncmp(resp.safte_rev, "1.0", 3) != 0)
return 0;
info->hi_type = HSBP_TYPE_SAFTE_1;
/*
* Format the enclosure ID as something human-readable.
*/
for (i = 0, cp = info->hi_serial; i < sizeof(resp.encl_id);
i++, cp += 2) {
snprintf(cp, 2, "%02x", (u_int)resp.encl_id[i] & 0xff);
}
/*
* Copy the other INQUIRE information into the standard
* format.
*/
#define TRIM(field) \
do { cp = &field[(sizeof field) - 1]; \
while (cp > field && *cp == ' ') { \
*cp-- = '\0'; \
} \
} while(0)
TRIM(resp.vendor);
TRIM(resp.product);
TRIM(resp.firmware);
#undef TRIM
info->hi_vendor[0] = info->hi_model[0] = info->hi_swrev[0] = '\0';
strncat(info->hi_vendor, resp.vendor, sizeof resp.vendor);
strncat(info->hi_model, resp.product, sizeof resp.product);
strncat(info->hi_swrev, resp.firmware, sizeof resp.firmware);
if (safte_read_buffer(fd, info->hi_sc_lun, SAFTE_BUF_ENCL_CONFIG,
sizeof encl, &encl) < sizeof encl) {
warnx("/dev/pt%d did not accept Read Enclosure Configuration",
info->hi_pt_unit);
return 0;
}
info->hi_nslots = encl.nslots;
info->hi_nfans = encl.nfans;
info->hi_nps = encl.npower;
info->hi_ntemps = encl.ntemps;
info->hi_haslock = encl.haslock;
info->hi_hasspkr = encl.hasspkr;
hs->u.safte.statuslen = encl.nfans + encl.npower + encl.nslots + 2
+ encl.ntemps + 2;
hs->u.safte.status = malloc(hs->u.safte.statuslen);
if (hs->u.safte.status == 0)
err(EX_OSERR, "malloc(%lu)", (u_long)hs->u.safte.statuslen);
hs->u.safte.slotstatus = malloc(4 * encl.nslots);
if (hs->u.safte.slotstatus == 0)
err(EX_OSERR, "malloc(%d)", 4 * encl.nslots);
hs->u.safte.oslotstatus = malloc(4 * encl.nslots);
if (hs->u.safte.oslotstatus == 0)
err(EX_OSERR, "malloc(%d)", 4 * encl.nslots);
hs->u.safte.psstatus = hs->u.safte.status + encl.nfans;
hs->u.safte.slotids = hs->u.safte.psstatus + encl.npower;
hs->u.safte.lockstatus = hs->u.safte.slotids + encl.nslots;
hs->u.safte.spkrstatus = hs->u.safte.lockstatus + 1;
hs->u.safte.temps = hs->u.safte.spkrstatus + 1;
hs->u.safte.tempalarms = hs->u.safte.temps + encl.ntemps;
if (safte_read_buffer(fd, info->hi_sc_lun, SAFTE_BUF_ENCL_STATUS,
hs->u.safte.statuslen, hs->u.safte.status)
< (int)hs->u.safte.statuslen) {
warnx("/dev/pt%d did not accept Read Enclosure Status",
info->hi_pt_unit);
free(hs->u.safte.status);
free(hs->u.safte.slotstatus);
hs->u.safte.status = 0;
hs->u.safte.statuslen = 0;
return 0;
}
/*
* Build the SCSI unit number map.
* The specification has the bug that, when no device is installed,
* the unit might be specified as 255 (meaning ``none'').
*/
for (i = 0; i < 16; i++)
info->hi_slotunit[i] = -1;
for (cp = hs->u.safte.slotids, i = 0; i < encl.nslots; i++) {
if (cp[i] < 16)
info->hi_slotunit[(u_char)cp[i]] = i;
}
if (safte_read_buffer(fd, info->hi_sc_lun, SAFTE_BUF_SLOT_STATUS,
4 * encl.nslots, hs->u.safte.slotstatus)
< 4 * encl.nslots) {
warnx("/dev/pt%d did not accept Read Device Slot Status",
info->hi_pt_unit);
free(hs->u.safte.status);
free(hs->u.safte.slotstatus);
return 0;
}
memcpy(hs->u.safte.oslotstatus, hs->u.safte.slotstatus,
4 * encl.nslots);
memset(hs->u.safte.cmdbytes, 0, sizeof hs->u.safte.cmdbytes);
hs->u.safte.cmdbytes[0] = SAFTE_WRT_GLOBAL_CMD;
return 1;
}
-GAWollman
--
Garrett A. Wollman | O Siem / We are all family / O Siem / We're all the same
wollman@lcs.mit.edu | O Siem / The fires of freedom
Opinions not those of| Dance in the burning flame
MIT, LCS, CRS, or NSA| - Susan Aglukark and Chad Irschick
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