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Attempt to load serial eeprom contents in both 93c46 and 93c56/66 mode before

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giving up.

PR: 6966
This commit is contained in:
gibbs 1998-07-06 18:38:57 +00:00
parent 73102953f2
commit 8c82d5ca70
1 changed files with 41 additions and 21 deletions
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62
sys/pci/aic7870.c
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@ -36,7 +36,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: aic7870.c,v 1.53 1997/06/27 19:39:34 gibbs Exp $
* $Id: aic7870.c,v 1.54 1997/11/18 14:14:34 bde Exp $
*/
#if defined(__FreeBSD__)
@ -693,6 +693,12 @@ load_seeprom(ahc, sxfrctl1)
sd.sd_ioh = ahc->sc_ioh;
sd.sd_offset = SEECTL;
#endif
/*
* For some multi-channel devices, the c46 is simply too
* small to work. For the other controller types, we can
* get our information from either SEEPROM type. Set the
* type to start our probe with accordingly.
*/
if ((ahc->type & AHC_398) == AHC_398)
sd.sd_chip = C56_66;
else
@ -704,30 +710,44 @@ load_seeprom(ahc, sxfrctl1)
sd.sd_DO = SEEDO;
sd.sd_DI = SEEDI;
if (bootverbose)
printf("%s: Reading SEEPROM...", ahc_name(ahc));
have_seeprom = acquire_seeprom(&sd);
if (have_seeprom) {
have_seeprom = read_seeprom(&sd,
(u_int16_t *)&sc,
ahc->flags & (AHC_CHNLB|AHC_CHNLC),
sizeof(sc)/2);
release_seeprom(&sd);
if (have_seeprom) {
/* Check checksum */
int i;
int maxaddr = (sizeof(sc)/2) - 1;
if (bootverbose)
printf("%s: Reading SEEPROM...", ahc_name(ahc));
for (i = 0; i < maxaddr; i++)
checksum = checksum + scarray[i];
if (checksum != sc.checksum) {
if(bootverbose)
printf ("checksum error");
have_seeprom = 0;
} else if (bootverbose)
printf("done.\n");
}
for (;;) {
u_int start_addr;
start_addr = ahc->flags & (AHC_CHNLB|AHC_CHNLC);
have_seeprom = read_seeprom(&sd, (u_int16_t *)&sc,
start_addr, sizeof(sc)/2);
if (have_seeprom) {
/* Check checksum */
int i;
int maxaddr = (sizeof(sc)/2) - 1;
u_int16_t *scarray = (u_int16_t *)&sc;
for (i = 0; i < maxaddr; i++)
checksum = checksum + scarray[i];
if (checksum == 0 || checksum != sc.checksum) {
if (bootverbose && sd.sd_chip == C56_66)
printf ("checksum error\n");
have_seeprom = 0;
} else {
if (bootverbose)
printf("done.\n");
break;
}
}
if (sd.sd_chip == C56_66)
break;
sd.sd_chip = C56_66;
}
}
release_seeprom(&sd);
if (!have_seeprom) {
if (bootverbose)
printf("\n%s: No SEEPROM available\n", ahc_name(ahc));