NetBSD-5.0.2/sys/arch/ofppc/pci/ofwpci.c
/* $NetBSD: ofwpci.c,v 1.8 2008/04/28 20:23:31 martin Exp $ */
/*-
* Copyright (c) 2007 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Tim Rightnour
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ofwpci.c,v 1.8 2008/04/28 20:23:31 martin Exp $");
#include "opt_pci.h"
#include <sys/param.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/extent.h>
#include <sys/systm.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pciconf.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_pci.h>
#include <machine/autoconf.h>
#include <machine/isa_machdep.h>
#include <machine/pio.h>
struct ofwpci_softc {
struct device sc_dev;
struct genppc_pci_chipset sc_pc;
struct powerpc_bus_space sc_iot;
struct powerpc_bus_space sc_memt;
};
static void ofwpci_attach(struct device *, struct device *, void *);
static int ofwpci_match(struct device *, struct cfdata *, void *);
CFATTACH_DECL(ofwpci, sizeof(struct ofwpci_softc),
ofwpci_match, ofwpci_attach, NULL, NULL);
extern struct genppc_pci_chipset *genppc_pct;
extern struct model_data modeldata;
static void
ofwpci_get_chipset_tag(pci_chipset_tag_t pc)
{
pc->pc_conf_v = (void *)pc;
pc->pc_attach_hook = genppc_pci_ofmethod_attach_hook;
pc->pc_bus_maxdevs = genppc_pci_bus_maxdevs;
pc->pc_make_tag = genppc_pci_ofmethod_make_tag;
pc->pc_conf_read = genppc_pci_ofmethod_conf_read;
pc->pc_conf_write = genppc_pci_ofmethod_conf_write;
pc->pc_intr_v = (void *)pc;
pc->pc_intr_map = genofw_pci_intr_map;
pc->pc_intr_string = genppc_pci_intr_string;
pc->pc_intr_evcnt = genppc_pci_intr_evcnt;
pc->pc_intr_establish = genppc_pci_intr_establish;
pc->pc_intr_disestablish = genppc_pci_intr_disestablish;
pc->pc_conf_interrupt = genppc_pci_conf_interrupt;
pc->pc_decompose_tag = genppc_pci_ofmethod_decompose_tag;
pc->pc_conf_hook = genofw_pci_conf_hook;
pc->pc_addr = 0;
pc->pc_data = 0;
pc->pc_bus = 0;
pc->pc_node = 0;
pc->pc_memt = 0;
pc->pc_iot = 0;
pc->pc_ihandle = 0;
}
static int
ofwpci_match(struct device *parent, struct cfdata *cf, void *aux)
{
struct confargs *ca = aux;
char name[32];
if (strcmp(ca->ca_name, "pci") != 0)
return 0;
memset(name, 0, sizeof(name));
OF_getprop(ca->ca_node, "device_type", name, sizeof(name));
if (strcmp(name, "pci") != 0)
return 0;
return 1;
}
static void
ofwpci_attach(struct device *parent, struct device *self, void *aux)
{
struct ofwpci_softc *sc = (void *)self;
pci_chipset_tag_t pc = &sc->sc_pc;
struct confargs *ca = aux;
struct pcibus_attach_args pba;
struct genppc_pci_chipset_businfo *pbi;
int node = ca->ca_node;
int i, isprim = 0;
uint32_t busrange[2];
char buf[64];
#ifdef PCI_NETBSD_CONFIGURE
struct extent *ioext, *memext;
#endif
aprint_normal("\n");
/* PCI bus number */
if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8)
return;
/* bus space map the io ranges */
sc->sc_iot.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE;
sc->sc_iot.pbs_base = 0x00000000;
if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_IO, node, &sc->sc_iot,
"ofwpci io-space") != 0)
panic("Can't init ofwpci io tag");
sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE;
sc->sc_memt.pbs_base = 0x00000000;
if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_MEM, node, &sc->sc_memt,
"ofwpci mem-space") != 0)
panic("Can't init ofwpci mem tag");
aprint_debug("io base=0x%x offset=0x%x limit=0x%x\n",
sc->sc_iot.pbs_base, sc->sc_iot.pbs_offset, sc->sc_iot.pbs_limit);
aprint_debug("mem base=0x%x offset=0x%x limit=0x%x\n",
sc->sc_memt.pbs_base, sc->sc_memt.pbs_offset,
sc->sc_memt.pbs_limit);
/* are we the primary pci bus? */
if (of_find_firstchild_byname(OF_finddevice("/"), "pci") == node) {
int isa_node;
isprim++;
/* yes we are, now do we have an ISA child? */
isa_node = of_find_firstchild_byname(node, "isa");
if (isa_node != -1) {
/* isa == pci */
genppc_isa_io_space_tag = sc->sc_iot;
genppc_isa_mem_space_tag = sc->sc_memt;
map_isa_ioregs();
init_ofppc_interrupt();
ofppc_init_comcons(isa_node);
}
}
ofwpci_get_chipset_tag(pc);
pc->pc_node = node;
i = OF_package_to_path(node, buf, sizeof(buf)-5);
if (i <= 0)
panic("Can't determine path for pci node %d", node);
buf[i] = '\0';
pc->pc_ihandle = OF_open(buf);
if (pc->pc_ihandle < 0)
panic("Can't open device %s", buf);
pc->pc_bus = busrange[0];
pc->pc_iot = &sc->sc_iot;
pc->pc_memt = &sc->sc_memt;
pbi = malloc(sizeof(struct genppc_pci_chipset_businfo),
M_DEVBUF, M_NOWAIT);
KASSERT(pbi != NULL);
pbi->pbi_properties = prop_dictionary_create();
KASSERT(pbi->pbi_properties != NULL);
SIMPLEQ_INIT(&pc->pc_pbi);
SIMPLEQ_INSERT_TAIL(&pc->pc_pbi, pbi, next);
genofw_setup_pciintr_map((void *)pc, pbi, pc->pc_node);
#ifdef PCI_NETBSD_CONFIGURE
ioext = extent_create("pciio",
modeldata.pciiodata[device_unit(self)].start,
modeldata.pciiodata[device_unit(self)].limit,
M_DEVBUF, NULL, 0, EX_NOWAIT);
memext = extent_create("pcimem", sc->sc_memt.pbs_base,
sc->sc_memt.pbs_limit-1, M_DEVBUF, NULL, 0, EX_NOWAIT);
if (pci_configure_bus(pc, ioext, memext, NULL, 0, CACHELINESIZE))
aprint_error("pci_configure_bus() failed\n");
extent_destroy(ioext);
extent_destroy(memext);
#endif /* PCI_NETBSD_CONFIGURE */
memset(&pba, 0, sizeof(pba));
pba.pba_memt = pc->pc_memt;
pba.pba_iot = pc->pc_iot;
pba.pba_dmat = &pci_bus_dma_tag;
pba.pba_dmat64 = NULL;
pba.pba_bus = pc->pc_bus;
pba.pba_bridgetag = NULL;
pba.pba_pc = pc;
pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED;
config_found_ia(self, "pcibus", &pba, pcibusprint);
}