NetBSD/sys/arch/macppc/pci/grackle.c

186 lines
4.6 KiB
C

/* $NetBSD: grackle.c,v 1.3 2002/05/16 01:01:38 thorpej Exp $ */
/*-
* Copyright (c) 2000 Tsubai Masanari. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <dev/pci/pcivar.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_pci.h>
#include <machine/autoconf.h>
struct grackle_softc {
struct device sc_dev;
struct pci_bridge sc_pc;
};
void grackle_attach __P((struct device *, struct device *, void *));
int grackle_match __P((struct device *, struct cfdata *, void *));
int grackle_print __P((void *, const char *));
pcireg_t grackle_conf_read __P((pci_chipset_tag_t, pcitag_t, int));
void grackle_conf_write __P((pci_chipset_tag_t, pcitag_t, int, pcireg_t));
struct cfattach grackle_ca = {
sizeof(struct grackle_softc), grackle_match, grackle_attach
};
int
grackle_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct confargs *ca = aux;
char compat[32];
if (strcmp(ca->ca_name, "pci") != 0)
return 0;
memset(compat, 0, sizeof(compat));
OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat));
if (strcmp(compat, "grackle") != 0)
return 0;
return 1;
}
#define GRACKLE_ADDR 0xfec00000
#define GRACKLE_DATA 0xfee00000
void
grackle_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct grackle_softc *sc = (void *)self;
pci_chipset_tag_t pc = &sc->sc_pc;
struct confargs *ca = aux;
struct pcibus_attach_args pba;
int len, node = ca->ca_node;
u_int32_t busrange[2];
struct ranges {
u_int32_t pci_hi, pci_mid, pci_lo;
u_int32_t host;
u_int32_t size_hi, size_lo;
} ranges[6], *rp = ranges;
printf("\n");
/* PCI bus number */
if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8)
return;
pc->node = node;
pc->addr = mapiodev(GRACKLE_ADDR, 4);
pc->data = mapiodev(GRACKLE_DATA, 4);
pc->bus = busrange[0];
pc->conf_read = grackle_conf_read;
pc->conf_write = grackle_conf_write;
pc->memt = (bus_space_tag_t)0;
/* find i/o tag */
len = OF_getprop(node, "ranges", ranges, sizeof(ranges));
if (len == -1)
return;
while (len >= sizeof(ranges[0])) {
if ((rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) ==
OFW_PCI_PHYS_HI_SPACE_IO)
pc->iot = (bus_space_tag_t)rp->host;
len -= sizeof(ranges[0]);
rp++;
}
memset(&pba, 0, sizeof(pba));
pba.pba_busname = "pci";
pba.pba_memt = pc->memt;
pba.pba_iot = pc->iot;
pba.pba_dmat = &pci_bus_dma_tag;
pba.pba_bus = pc->bus;
pba.pba_bridgetag = NULL;
pba.pba_pc = pc;
pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED;
config_found(self, &pba, grackle_print);
}
int
grackle_print(aux, pnp)
void *aux;
const char *pnp;
{
struct pcibus_attach_args *pa = aux;
if (pnp)
printf("%s at %s", pa->pba_busname, pnp);
printf(" bus %d", pa->pba_bus);
return UNCONF;
}
pcireg_t
grackle_conf_read(pc, tag, reg)
pci_chipset_tag_t pc;
pcitag_t tag;
int reg;
{
pcireg_t data;
int s;
s = splhigh();
out32rb(pc->addr, tag | reg);
data = 0xffffffff;
if (!badaddr(pc->data, 4))
data = in32rb(pc->data);
out32rb(pc->addr, 0);
splx(s);
return data;
}
void
grackle_conf_write(pc, tag, reg, data)
pci_chipset_tag_t pc;
pcitag_t tag;
int reg;
pcireg_t data;
{
int s;
s = splhigh();
out32rb(pc->addr, tag | reg);
out32rb(pc->data, data);
out32rb(pc->addr, 0);
splx(s);
}