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Implement PCI tag to OpenFirmware device convert function (pcidev_to_ofdev).

This commit is contained in:
tsubai 1998-10-14 12:18:20 +00:00
parent b6e7cc68c6
commit 9fdd9b72df
1 changed files with 38 additions and 11 deletions
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49
sys/arch/macppc/macppc/autoconf.c
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@ -1,4 +1,4 @@
/* $NetBSD: autoconf.c,v 1.5 1998/07/24 14:40:40 tsubai Exp $ */
/* $NetBSD: autoconf.c,v 1.6 1998/10/14 12:18:20 tsubai Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -41,6 +41,7 @@
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <dev/ofw/openfirm.h>
#include <dev/pci/pcivar.h>
#include <machine/powerpc.h>
#include <machine/pio.h>
@ -48,20 +49,11 @@
extern int cold;
void configure __P((void));
void findroot __P((void));
struct device *booted_device; /* boot device */
int booted_partition; /* ...and partition on that device */
struct devnametobdevmaj powermac_nam2blk[] = {
{ "ofdisk", 0 },
{ "sd", 4 },
{ "md", 9 },
{ "wd", 10 },
{ NULL, 0 },
};
#define INT_ENABLE_REG (interrupt_reg + 0x24)
#define INT_CLEAR_REG (interrupt_reg + 0x28)
extern u_char *interrupt_reg;
@ -97,7 +89,7 @@ cpu_rootconf()
printf("boot device: %s\n",
booted_device ? booted_device->dv_xname : "<unknown>");
setroot(booted_device, booted_partition, powermac_nam2blk);
setroot(booted_device, booted_partition, dev_name2blk);
}
/*
@ -187,3 +179,38 @@ OF_interpret(cmd, nreturns, va_alist)
va_end(ap);
return args.status;
}
/*
* Find OF-device corresponding to the PCI device.
*/
int
pcidev_to_ofdev(pa)
struct pci_attach_args *pa;
{
int bus, dev, func;
u_int reg[5];
int p, q;
int l, b, d, f;
pci_decompose_tag(pa->pa_pc, pa->pa_tag, &bus, &dev, &func);
for (q = OF_peer(0); q; q = p) {
l = OF_getprop(q, "assigned-addresses", reg, sizeof(reg));
if (l > 4) {
b = (reg[0] >> 16) & 0xff;
d = (reg[0] >> 11) & 0x1f;
f = (reg[0] >> 8) & 0x07;
if (b == bus && d == dev && f == func)
return q;
}
if ((p = OF_child(q)))
continue;
while (q) {
if ((p = OF_peer(q)))
break;
q = OF_parent(q);
}
}
return 0;
}