226 lines
6.8 KiB
C
226 lines
6.8 KiB
C
/* $NetBSD: ofwpci.c,v 1.12 2014/02/28 05:50:27 matt Exp $ */
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/*-
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* Copyright (c) 2007 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Tim Rightnour
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ofwpci.c,v 1.12 2014/02/28 05:50:27 matt Exp $");
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#include "opt_pci.h"
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/extent.h>
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#include <sys/systm.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pciconf.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_pci.h>
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#include <machine/autoconf.h>
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#include <machine/isa_machdep.h>
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#include <machine/pio.h>
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struct ofwpci_softc {
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device_t sc_dev;
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struct genppc_pci_chipset sc_pc;
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struct powerpc_bus_space sc_iot;
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struct powerpc_bus_space sc_memt;
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};
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static void ofwpci_attach(device_t, device_t, void *);
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static int ofwpci_match(device_t, cfdata_t, void *);
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CFATTACH_DECL_NEW(ofwpci, sizeof(struct ofwpci_softc),
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ofwpci_match, ofwpci_attach, NULL, NULL);
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extern struct genppc_pci_chipset *genppc_pct;
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extern struct model_data modeldata;
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static void
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ofwpci_get_chipset_tag(pci_chipset_tag_t pc)
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{
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pc->pc_conf_v = (void *)pc;
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pc->pc_attach_hook = genppc_pci_ofmethod_attach_hook;
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pc->pc_bus_maxdevs = genppc_pci_bus_maxdevs;
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pc->pc_make_tag = genppc_pci_ofmethod_make_tag;
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pc->pc_conf_read = genppc_pci_ofmethod_conf_read;
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pc->pc_conf_write = genppc_pci_ofmethod_conf_write;
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pc->pc_intr_v = (void *)pc;
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pc->pc_intr_map = genofw_pci_intr_map;
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pc->pc_intr_string = genppc_pci_intr_string;
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pc->pc_intr_evcnt = genppc_pci_intr_evcnt;
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pc->pc_intr_establish = genppc_pci_intr_establish;
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pc->pc_intr_disestablish = genppc_pci_intr_disestablish;
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pc->pc_conf_interrupt = genppc_pci_conf_interrupt;
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pc->pc_decompose_tag = genppc_pci_ofmethod_decompose_tag;
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pc->pc_conf_hook = genofw_pci_conf_hook;
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pc->pc_addr = 0;
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pc->pc_data = 0;
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pc->pc_bus = 0;
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pc->pc_node = 0;
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pc->pc_memt = 0;
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pc->pc_iot = 0;
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pc->pc_ihandle = 0;
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}
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static int
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ofwpci_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct confargs *ca = aux;
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char name[32];
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if (strcmp(ca->ca_name, "pci") != 0)
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return 0;
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memset(name, 0, sizeof(name));
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OF_getprop(ca->ca_node, "device_type", name, sizeof(name));
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if (strcmp(name, "pci") != 0)
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return 0;
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return 1;
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}
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static void
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ofwpci_attach(device_t parent, device_t self, void *aux)
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{
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struct ofwpci_softc *sc = device_private(self);
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pci_chipset_tag_t pc = &sc->sc_pc;
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struct confargs *ca = aux;
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struct pcibus_attach_args pba;
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struct genppc_pci_chipset_businfo *pbi;
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int node = ca->ca_node;
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int i, isprim = 0;
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uint32_t busrange[2];
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char buf[64];
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#ifdef PCI_NETBSD_CONFIGURE
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struct extent *ioext, *memext;
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#endif
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aprint_normal("\n");
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sc->sc_dev = self;
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/* PCI bus number */
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if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8)
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return;
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/* bus space map the io ranges */
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sc->sc_iot.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE;
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sc->sc_iot.pbs_base = 0x00000000;
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if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_IO, node, &sc->sc_iot,
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"ofwpci io-space") != 0)
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panic("Can't init ofwpci io tag");
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sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE;
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sc->sc_memt.pbs_base = 0x00000000;
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if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_MEM, node, &sc->sc_memt,
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"ofwpci mem-space") != 0)
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panic("Can't init ofwpci mem tag");
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aprint_debug("io base=0x%"PRIxPTR" offset=0x%"PRIxPTR" limit=0x%"PRIxPTR"\n",
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sc->sc_iot.pbs_base, sc->sc_iot.pbs_offset, sc->sc_iot.pbs_limit);
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aprint_debug("mem base=0x%"PRIxPTR" offset=0x%"PRIxPTR" limit=0x%"PRIxPTR"\n",
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sc->sc_memt.pbs_base, sc->sc_memt.pbs_offset,
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sc->sc_memt.pbs_limit);
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/* are we the primary pci bus? */
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if (of_find_firstchild_byname(OF_finddevice("/"), "pci") == node) {
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int isa_node;
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isprim++;
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/* yes we are, now do we have an ISA child? */
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isa_node = of_find_firstchild_byname(node, "isa");
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if (isa_node != -1) {
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/* isa == pci */
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genppc_isa_io_space_tag = sc->sc_iot;
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genppc_isa_mem_space_tag = sc->sc_memt;
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map_isa_ioregs();
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init_ofppc_interrupt();
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ofppc_init_comcons(isa_node);
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}
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}
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ofwpci_get_chipset_tag(pc);
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pc->pc_node = node;
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i = OF_package_to_path(node, buf, sizeof(buf)-5);
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if (i <= 0)
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panic("Can't determine path for pci node %d", node);
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buf[i] = '\0';
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pc->pc_ihandle = OF_open(buf);
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if (pc->pc_ihandle < 0)
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panic("Can't open device %s", buf);
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pc->pc_bus = busrange[0];
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pc->pc_iot = &sc->sc_iot;
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pc->pc_memt = &sc->sc_memt;
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pbi = malloc(sizeof(struct genppc_pci_chipset_businfo),
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M_DEVBUF, M_NOWAIT);
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KASSERT(pbi != NULL);
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pbi->pbi_properties = prop_dictionary_create();
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KASSERT(pbi->pbi_properties != NULL);
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SIMPLEQ_INIT(&pc->pc_pbi);
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SIMPLEQ_INSERT_TAIL(&pc->pc_pbi, pbi, next);
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genofw_setup_pciintr_map((void *)pc, pbi, pc->pc_node);
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#ifdef PCI_NETBSD_CONFIGURE
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ioext = extent_create("pciio",
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modeldata.pciiodata[device_unit(self)].start,
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modeldata.pciiodata[device_unit(self)].limit,
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NULL, 0, EX_NOWAIT);
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memext = extent_create("pcimem", sc->sc_memt.pbs_base,
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sc->sc_memt.pbs_limit-1, NULL, 0, EX_NOWAIT);
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if (pci_configure_bus(pc, ioext, memext, NULL, 0, CACHELINESIZE))
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aprint_error("pci_configure_bus() failed\n");
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extent_destroy(ioext);
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extent_destroy(memext);
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#endif /* PCI_NETBSD_CONFIGURE */
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memset(&pba, 0, sizeof(pba));
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pba.pba_memt = pc->pc_memt;
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pba.pba_iot = pc->pc_iot;
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pba.pba_dmat = &pci_bus_dma_tag;
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pba.pba_dmat64 = NULL;
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pba.pba_bus = pc->pc_bus;
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pba.pba_bridgetag = NULL;
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pba.pba_pc = pc;
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pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY;
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config_found_ia(self, "pcibus", &pba, pcibusprint);
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}
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