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

Add code to probe the Q-bus/Unibus for memory. (From Charles Dickman)

Browse Source
This commit is contained in:
matt 2015-07-05 03:03:00 +00:00
parent 35583341d8
commit 5227f182c7
1 changed files with 43 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
sys/arch/vax/uba/uba_mainbus.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: uba_mainbus.c,v 1.10 2010/12/14 23:38:30 matt Exp $ */
/* $NetBSD: uba_mainbus.c,v 1.11 2015/07/05 03:03:00 matt Exp $ */
/*
* Copyright (c) 1982, 1986 The Regents of the University of California.
* All rights reserved.
@ -68,7 +68,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uba_mainbus.c,v 1.10 2010/12/14 23:38:30 matt Exp $");
__KERNEL_RCSID(0, "$NetBSD: uba_mainbus.c,v 1.11 2015/07/05 03:03:00 matt Exp $");
#define _VAX_BUS_DMA_PRIVATE
@ -91,6 +91,7 @@ __KERNEL_RCSID(0, "$NetBSD: uba_mainbus.c,v 1.10 2010/12/14 23:38:30 matt Exp $"
/* Some Qbus-specific defines */
#define QBASIZE (8192 * VAX_NBPG)
#define QBAMAP 0x20088000
#define QBAMEM 0x30000000
#define QIOPAGE 0x20000000
/*
@ -121,6 +122,12 @@ qba_attach(device_t parent, device_t self, void *aux)
{
struct mainbus_attach_args * const ma = aux;
struct uba_vsoftc * const sc = device_private(self);
paddr_t paddr;
vaddr_t vaddr;
int *mapp;
int pgnum;
//int val;
int start;
aprint_normal(": Q22\n");
@ -140,6 +147,40 @@ qba_attach(device_t parent, device_t self, void *aux)
sc->uv_addr = QBAMAP; /* Physical address of map registers */
uba_dma_init(sc);
mapp = (int *)vax_map_physmem(QBAMAP, QBASIZE/VAX_NBPG);
//val = 0;
for (paddr = QBAMEM, pgnum = 0, start = -1;
paddr < QBAMEM + QBASIZE - 8192;
paddr += VAX_NBPG, pgnum += 1) {
//val = mapp[pgnum];
mapp[pgnum] = 0;
vaddr = vax_map_physmem(paddr, 1);
if (badaddr((void *)vaddr, 2) == 0) {
if (start < 0)
start = pgnum;
} else if (start >= 0) {
aprint_normal("sgmap exclusion at %#x - %#x\n",
start*VAX_NBPG, pgnum*VAX_NBPG - 1);
vax_sgmap_resserve(start*VAX_NBPG,
(pgnum - start)*VAX_NBPG, &sc->uv_sgmap);
start = -1;
}
vax_unmap_physmem(vaddr, 1);
//mapp[pgnum] = val;
}
vax_unmap_physmem((vaddr_t)mapp, QBASIZE/VAX_NBPG);
if (start >= 0) {
aprint_normal("sgmap exclusion at %#x - %#x\n",
start*VAX_NBPG, pgnum*VAX_NBPG - 1);
vax_sgmap_reserve(start*VAX_NBPG, (pgnum - start)*VAX_NBPG,
&sc->uv_sgmap);
}
/* reserve I/O space within Qbus */
vax_sgmap_reserve(0x3fe000, 0x400000 - 0x3fe000, &sc->uv_sgmap);
uba_attach(&sc->uv_sc, QIOPAGE);
}