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On sgimips (R5000 O2), it seems that the first EEPROM read data

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right after vge_reset() could be corrupted. For workaround, add a
dummy EEPROM read in vge_reset() so that MAC address is properly
set on the machine.
While here, add a DELAY() in busy loop in vge_read_eeprom().
This commit is contained in:
tsutsui 2006-10-15 10:33:25 +00:00
parent 4751084399
commit 2412a17a18
1 changed files with 9 additions and 2 deletions
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11
sys/dev/pci/if_vge.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_vge.c,v 1.15 2006/10/14 19:53:51 tsutsui Exp $ */
/* $NetBSD: if_vge.c,v 1.16 2006/10/15 10:33:25 tsutsui Exp $ */
/*-
* Copyright (c) 2004
@ -35,7 +35,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_vge.c,v 1.15 2006/10/14 19:53:51 tsutsui Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_vge.c,v 1.16 2006/10/15 10:33:25 tsutsui Exp $");
/*
* VIA Networking Technologies VT612x PCI gigabit ethernet NIC driver.
@ -246,6 +246,7 @@ vge_read_eeprom(struct vge_softc *sc, int addr)
/* Wait for the done bit to be set. */
for (i = 0; i < VGE_TIMEOUT; i++) {
DELAY(5);
if (CSR_READ_1(sc, VGE_EECMD) & VGE_EECMD_EDONE)
break;
}
@ -597,6 +598,12 @@ vge_reset(struct vge_softc *sc)
return;
}
/*
* On some machine, the first read data from EEPROM could be
* messed up, so read one dummy data here to avoid the mess.
*/
(void)vge_read_eeprom(sc, 0);
CSR_CLRBIT_1(sc, VGE_CHIPCFG0, VGE_CHIPCFG0_PACPI);
}