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* Revision 2.5 93/09/30 17:44:14 davidg

Browse Source 
* patch from vak@zebub.msk.su (Serge V.Vakulenko) to work around
 * a hardware bug in cheap WD clone boards where the PROM checksum
 * byte is always zero
This commit is contained in:
David Greenman 1993-10-01 00:56:43 +00:00
parent 60de6c38e0
commit 627d219551
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=532
2 changed files with 36 additions and 12 deletions
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24
sys/dev/ed/if_ed.c
View File

@ -20,12 +20,17 @@
*/
/*
* $Id: if_ed.c,v 2.4 93/09/29 21:24:30 davidg Exp Locker: davidg $
* $Id: if_ed.c,v 2.5 93/09/30 17:44:14 davidg Exp Locker: davidg $
*/
/*
* Modification history
*
* Revision 2.5 93/09/30 17:44:14 davidg
* patch from vak@zebub.msk.su (Serge V.Vakulenko) to work around
* a hardware bug in cheap WD clone boards where the PROM checksum
* byte is always zero
*
* Revision 2.4 93/09/29 21:24:30 davidg
* Added software NIC reset in NE probe to work around a problem
* with some NE boards where the 8390 doesn't reset properly on
@ -270,14 +275,21 @@ ed_probe_WD80x3(isa_dev)
* If it fails, it's probably not a SMC/WD board. There
* is a problem with this, though: some clone WD boards
* don't pass the checksum test. Danpex boards for one.
* XXX - We need to do additional checking for this case.
*/
for (sum = 0, i = 0; i < 8; ++i)
sum += inb(sc->asic_addr + ED_WD_PROM + i);
if (sum != ED_WD_ROM_CHECKSUM_TOTAL)
return(0);
if (sum != ED_WD_ROM_CHECKSUM_TOTAL) {
/*
* Checksum is invalid. This often happens with cheap
* WD8003E clones. In this case, the checksum byte
* (the eighth byte) seems to always be zero.
*/
if (inb(sc->asic_addr + ED_WD_CARD_ID) != ED_TYPE_WD8003E ||
inb(sc->asic_addr + ED_WD_PROM + 7) != 0)
return(0);
}
/* reset card to force it into a known state. */
outb(sc->asic_addr + ED_WD_MSR, ED_WD_MSR_RST);
DELAY(100);

24
sys/i386/isa/if_ed.c
View File

@ -20,12 +20,17 @@
*/
/*
* $Id: if_ed.c,v 2.4 93/09/29 21:24:30 davidg Exp Locker: davidg $
* $Id: if_ed.c,v 2.5 93/09/30 17:44:14 davidg Exp Locker: davidg $
*/
/*
* Modification history
*
* Revision 2.5 93/09/30 17:44:14 davidg
* patch from vak@zebub.msk.su (Serge V.Vakulenko) to work around
* a hardware bug in cheap WD clone boards where the PROM checksum
* byte is always zero
*
* Revision 2.4 93/09/29 21:24:30 davidg
* Added software NIC reset in NE probe to work around a problem
* with some NE boards where the 8390 doesn't reset properly on
@ -270,14 +275,21 @@ ed_probe_WD80x3(isa_dev)
* If it fails, it's probably not a SMC/WD board. There
* is a problem with this, though: some clone WD boards
* don't pass the checksum test. Danpex boards for one.
* XXX - We need to do additional checking for this case.
*/
for (sum = 0, i = 0; i < 8; ++i)
sum += inb(sc->asic_addr + ED_WD_PROM + i);
if (sum != ED_WD_ROM_CHECKSUM_TOTAL)
return(0);
if (sum != ED_WD_ROM_CHECKSUM_TOTAL) {
/*
* Checksum is invalid. This often happens with cheap
* WD8003E clones. In this case, the checksum byte
* (the eighth byte) seems to always be zero.
*/
if (inb(sc->asic_addr + ED_WD_CARD_ID) != ED_TYPE_WD8003E ||
inb(sc->asic_addr + ED_WD_PROM + 7) != 0)
return(0);
}
/* reset card to force it into a known state. */
outb(sc->asic_addr + ED_WD_MSR, ED_WD_MSR_RST);
DELAY(100);