NetBSD/sys/dev/ofisa/ofisa.c

414 lines
8.6 KiB
C

/* $NetBSD: ofisa.c,v 1.8 2001/11/13 07:29:45 lukem Exp $ */
/*
* Copyright 1997, 1998
* Digital Equipment Corporation. All rights reserved.
*
* This software is furnished under license and may be used and
* copied only in accordance with the following terms and conditions.
* Subject to these conditions, you may download, copy, install,
* use, modify and distribute this software in source and/or binary
* form. No title or ownership is transferred hereby.
*
* 1) Any source code used, modified or distributed must reproduce
* and retain this copyright notice and list of conditions as
* they appear in the source file.
*
* 2) No right is granted to use any trade name, trademark, or logo of
* Digital Equipment Corporation. Neither the "Digital Equipment
* Corporation" name nor any trademark or logo of Digital Equipment
* Corporation may be used to endorse or promote products derived
* from this software without the prior written permission of
* Digital Equipment Corporation.
*
* 3) This software is provided "AS-IS" and any express or implied
* warranties, including but not limited to, any implied warranties
* of merchantability, fitness for a particular purpose, or
* non-infringement are disclaimed. In no event shall DIGITAL be
* liable for any damages whatsoever, and in particular, DIGITAL
* shall not be liable for special, indirect, consequential, or
* incidental damages or damages for lost profits, loss of
* revenue or loss of use, whether such damages arise in contract,
* negligence, tort, under statute, in equity, at law or otherwise,
* even if advised of the possibility of such damage.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ofisa.c,v 1.8 2001/11/13 07:29:45 lukem Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/ofw/openfirm.h>
#include <dev/isa/isavar.h>
#include <dev/ofisa/ofisavar.h>
#include "isadma.h"
#define OFW_MAX_STACK_BUF_SIZE 256
static int ofisamatch __P((struct device *, struct cfdata *, void *));
static void ofisaattach __P((struct device *, struct device *, void *));
struct cfattach ofisa_ca = {
sizeof(struct device), ofisamatch, ofisaattach
};
extern struct cfdriver ofisa_cd;
static int ofisaprint __P((void *, const char *));
static int
ofisaprint(aux, pnp)
void *aux;
const char *pnp;
{
struct ofbus_attach_args *oba = aux;
char name[64];
(void)of_packagename(oba->oba_phandle, name, sizeof name);
if (pnp)
printf("%s at %s", name, pnp);
else
printf(" (%s)", name);
return UNCONF;
}
int
ofisamatch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct ofbus_attach_args *oba = aux;
const char *compatible_strings[] = { "pnpPNP,a00", NULL };
int rv = 0;
if (of_compatible(oba->oba_phandle, compatible_strings) != -1)
rv = 5;
#ifdef _OFISA_MD_MATCH
if (!rv)
rv = ofisa_md_match(parent, cf, aux);
#endif
return (rv);
}
void
ofisaattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct ofbus_attach_args *oba = aux;
struct isabus_attach_args iba;
struct ofisa_attach_args aa;
int child;
if (ofisa_get_isabus_data(oba->oba_phandle, &iba) < 0) {
printf(": couldn't get essential bus data\n");
return;
}
printf("\n");
#if NISADMA > 0
/*
* Initialize our DMA state.
*/
isa_dmainit(iba.iba_ic, iba.iba_iot, iba.iba_dmat, self);
#endif
for (child = OF_child(oba->oba_phandle); child;
child = OF_peer(child)) {
if (ofisa_ignore_child(oba->oba_phandle, child))
continue;
bzero(&aa, sizeof aa);
aa.oba.oba_busname = "ofw"; /* XXX */
aa.oba.oba_phandle = child;
aa.iot = iba.iba_iot;
aa.memt = iba.iba_memt;
aa.dmat = iba.iba_dmat;
aa.ic = iba.iba_ic;
config_found(self, &aa, ofisaprint);
}
}
int
ofisa_reg_count(phandle)
int phandle;
{
int len;
len = OF_getproplen(phandle, "reg");
/* nonexistent or obviously malformed "reg" property */
if (len < 0 || (len % 12) != 0)
return (-1);
return (len / 12);
}
int
ofisa_reg_get(phandle, descp, ndescs)
int phandle;
struct ofisa_reg_desc *descp;
int ndescs;
{
char *buf, *bp;
int i, proplen, allocated, rv;
i = ofisa_reg_count(phandle);
if (i < 0)
return (-1);
proplen = i * 12;
ndescs = min(ndescs, i);
i = ndescs * 12;
if (i > OFW_MAX_STACK_BUF_SIZE) {
buf = malloc(i, M_TEMP, M_WAITOK);
allocated = 1;
} else {
buf = alloca(i);
allocated = 0;
}
if (OF_getprop(phandle, "reg", buf, i) != proplen) {
rv = -1;
goto out;
}
for (i = 0, bp = buf; i < ndescs; i++, bp += 12) {
if (of_decode_int(&bp[0]) & 1)
descp[i].type = OFISA_REG_TYPE_IO;
else
descp[i].type = OFISA_REG_TYPE_MEM;
descp[i].addr = of_decode_int(&bp[4]);
descp[i].len = of_decode_int(&bp[8]);
}
rv = i; /* number of descriptors processed (== ndescs) */
out:
if (allocated)
free(buf, M_TEMP);
return (rv);
}
void
ofisa_reg_print(descp, ndescs)
struct ofisa_reg_desc *descp;
int ndescs;
{
int i;
if (ndescs == 0) {
printf("none");
return;
}
for (i = 0; i < ndescs; i++) {
printf("%s%s 0x%lx/%ld", i ? ", " : "",
descp[i].type == OFISA_REG_TYPE_IO ? "io" : "mem",
(long)descp[i].addr, (long)descp[i].len);
}
}
int
ofisa_intr_count(phandle)
int phandle;
{
int len;
len = OF_getproplen(phandle, "interrupts");
/* nonexistent or obviously malformed "reg" property */
if (len < 0 || (len % 8) != 0)
return (-1);
return (len / 8);
}
int
ofisa_intr_get(phandle, descp, ndescs)
int phandle;
struct ofisa_intr_desc *descp;
int ndescs;
{
char *buf, *bp;
int i, proplen, allocated, rv;
i = ofisa_intr_count(phandle);
if (i < 0)
return (-1);
proplen = i * 8;
ndescs = min(ndescs, i);
i = ndescs * 8;
if (i > OFW_MAX_STACK_BUF_SIZE) {
buf = malloc(i, M_TEMP, M_WAITOK);
allocated = 1;
} else {
buf = alloca(i);
allocated = 0;
}
if (OF_getprop(phandle, "interrupts", buf, i) != proplen) {
rv = -1;
goto out;
}
for (i = 0, bp = buf; i < ndescs; i++, bp += 8) {
descp[i].irq = of_decode_int(&bp[0]);
switch (of_decode_int(&bp[4])) {
case 0:
case 1:
descp[i].share = IST_LEVEL;
break;
case 2:
case 3:
descp[i].share = IST_EDGE;
break;
#ifdef DIAGNOSTIC
default:
/* Dunno what to do, so fail. */
printf("ofisa_intr_get: unknown intrerrupt type %d\n",
of_decode_int(&bp[4]));
rv = -1;
goto out;
#endif
}
}
rv = i; /* number of descriptors processed (== ndescs) */
out:
if (allocated)
free(buf, M_TEMP);
return (rv);
}
void
ofisa_intr_print(descp, ndescs)
struct ofisa_intr_desc *descp;
int ndescs;
{
int i;
if (ndescs == 0) {
printf("none");
return;
}
for (i = 0; i < ndescs; i++) {
printf("%s%d (%s)", i ? ", " : "", descp[i].irq,
descp[i].share == IST_LEVEL ? "level" : "edge");
}
}
int
ofisa_dma_count(phandle)
int phandle;
{
int len;
len = OF_getproplen(phandle, "dma");
/* nonexistent or obviously malformed "reg" property */
if (len < 0 || (len % 20) != 0)
return (-1);
return (len / 20);
}
int
ofisa_dma_get(phandle, descp, ndescs)
int phandle;
struct ofisa_dma_desc *descp;
int ndescs;
{
char *buf, *bp;
int i, proplen, allocated, rv;
i = ofisa_dma_count(phandle);
if (i < 0)
return (-1);
proplen = i * 20;
ndescs = min(ndescs, i);
i = ndescs * 20;
if (i > OFW_MAX_STACK_BUF_SIZE) {
buf = malloc(i, M_TEMP, M_WAITOK);
allocated = 1;
} else {
buf = alloca(i);
allocated = 0;
}
if (OF_getprop(phandle, "dma", buf, i) != proplen) {
rv = -1;
goto out;
}
for (i = 0, bp = buf; i < ndescs; i++, bp += 20) {
descp[i].drq = of_decode_int(&bp[0]);
descp[i].mode = of_decode_int(&bp[4]);
descp[i].width = of_decode_int(&bp[8]);
descp[i].countwidth = of_decode_int(&bp[12]);
descp[i].busmaster = of_decode_int(&bp[16]);
}
rv = i; /* number of descriptors processed (== ndescs) */
out:
if (allocated)
free(buf, M_TEMP);
return (rv);
}
void
ofisa_dma_print(descp, ndescs)
struct ofisa_dma_desc *descp;
int ndescs;
{
char unkmode[16];
const char *modestr;
int i;
if (ndescs == 0) {
printf("none");
return;
}
for (i = 0; i < ndescs; i++) {
switch (descp[i].mode) {
case OFISA_DMA_MODE_COMPAT:
modestr = "compat";
break;
case OFISA_DMA_MODE_A:
modestr = "A";
break;
case OFISA_DMA_MODE_B:
modestr = "B";
break;
case OFISA_DMA_MODE_F:
modestr = "F";
break;
case OFISA_DMA_MODE_C:
modestr = "C";
break;
default:
sprintf(unkmode, "??? (%d)", descp[i].mode);
modestr = unkmode;
break;
}
printf("%s%d %s mode %d-bit (%d-bit count)%s", i ? ", " : "",
descp[i].drq, modestr, descp[i].width,
descp[i].countwidth,
descp[i].busmaster ? " busmaster" : "");
}
}