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Add probe for wdsc so that we do not falsely attach wdsc(4) devices to E++ 

ethernet adapters.

By resetting the chip we also allow the wd33c93 attach routines to succeed.
Otherwise, device register accesses would result in a bus error.
This commit is contained in:
rumble 2007-02-20 21:54:44 +00:00
parent d298894138
commit 6db143f7fd
1 changed files with 33 additions and 5 deletions
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38
sys/arch/sgimips/hpc/wdsc.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: wdsc.c,v 1.18 2006/12/22 23:36:42 rumble Exp $ */
/* $NetBSD: wdsc.c,v 1.19 2007/02/20 21:54:44 rumble Exp $ */
/*
* Copyright (c) 2001 Wayne Knowles
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: wdsc.c,v 1.18 2006/12/22 23:36:42 rumble Exp $");
__KERNEL_RCSID(0, "$NetBSD: wdsc.c,v 1.19 2007/02/20 21:54:44 rumble Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -53,6 +53,7 @@ __KERNEL_RCSID(0, "$NetBSD: wdsc.c,v 1.18 2006/12/22 23:36:42 rumble Exp $");
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/machtype.h>
#include <machine/sysconf.h>
#include <sgimips/hpc/hpcvar.h>
#include <sgimips/hpc/hpcreg.h>
@ -91,15 +92,42 @@ int wdsc_dmaintr (void *);
int wdsc_scsiintr (void *);
/*
* Match for SCSI devices on the onboard WD33C93 chip
* Match for SCSI devices on the onboard and GIO32 adapter WD33C93 chips
*/
int
wdsc_match(struct device *pdp, struct cfdata *cf, void *auxp)
{
struct hpc_attach_args *haa = auxp;
if (strcmp(haa->ha_name, cf->cf_name) == 0)
return (1);
if (strcmp(haa->ha_name, cf->cf_name) == 0) {
uint32_t reset, asr, reg;
reset = MIPS_PHYS_TO_KSEG1(haa->ha_sh + haa->ha_dmaoff +
haa->hpc_regs->scsi0_ctl);
asr = MIPS_PHYS_TO_KSEG1(haa->ha_sh + haa->ha_devoff);
/* XXX: hpc1 offset due to SGIMIPS_BUS_SPACE_HPC brain damage */
asr = (asr + 3) & ~0x3;
if (platform.badaddr((void *)reset, sizeof(reset)))
return (0);
*(volatile uint32_t *)reset = haa->hpc_regs->scsi_dmactl_reset;
delay(1000);
*(volatile uint32_t *)reset = 0x0;
if (platform.badaddr((void *)asr, sizeof(asr)))
return (0);
reg = *(volatile uint32_t *)asr;
if (haa->hpc_regs->revision == 3) {
if ((reg & 0xff) == SBIC_ASR_INT)
return (1);
} else {
if (((reg >> 8) & 0xff) == SBIC_ASR_INT)
return (1);
}
}
return (0);
}