Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

The MPC105 does not implement the IBM reference implementation's 

Equipment Present Register (I/O port 0x080c), so perform L2 cache
detection here.
This commit is contained in:
kleink 2001-12-12 10:18:48 +00:00
parent 4c650ea52b
commit e1f611fa76
1 changed files with 47 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
sys/arch/prep/pci/pchb.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: pchb.c,v 1.1 2000/02/29 15:21:46 nonaka Exp $ */
/* $NetBSD: pchb.c,v 1.2 2001/12/12 10:18:48 kleink Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
@ -48,6 +48,8 @@
#include <dev/pci/pcidevs.h>
#include <dev/ic/mpc105reg.h>
int pchbmatch __P((struct device *, struct cfdata *, void *));
void pchbattach __P((struct device *, struct device *, void *));
@ -80,7 +82,9 @@ pchbattach(parent, self, aux)
void *aux;
{
struct pci_attach_args *pa = aux;
pcireg_t reg1, reg2;
char devinfo[256];
const char *s;
printf("\n");
@ -93,4 +97,46 @@ pchbattach(parent, self, aux)
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
PCI_REVISION(pa->pa_class));
switch (PCI_VENDOR(pa->pa_id)) {
case PCI_VENDOR_MOT:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_MOT_MPC105:
reg1 = pci_conf_read(pa->pa_pc, pa->pa_tag,
MPC105_PICR1);
reg2 = pci_conf_read(pa->pa_pc, pa->pa_tag,
MPC105_PICR2);
printf("%s: L2 cache: ", self->dv_xname);
switch (reg2 & MPC105_PICR2_L2_SIZE) {
case MPC105_PICR2_L2_SIZE_256K:
s = "256K";
break;
case MPC105_PICR2_L2_SIZE_512K:
s = "512K";
break;
case MPC105_PICR2_L2_SIZE_1M:
s = "1M";
break;
default:
s = "reserved size";
break;
}
printf("%s, ", s);
switch (reg1 & MPC105_PICR1_L2_MP) {
case MPC105_PICR1_L2_MP_NONE:
s = "uniprocessor/none";
break;
case MPC105_PICR1_L2_MP_WT:
s = "write-through";
break;
case MPC105_PICR1_L2_MP_WB:
s = "write-back";
break;
case MPC105_PICR1_L2_MP_MP:
s = "multiprocessor";
break;
}
printf("%s mode\n", s);
}
}
}