ofwpci.c revision 1.9
1/* $NetBSD: ofwpci.c,v 1.9 2011/05/17 17:34:51 dyoung Exp $ */ 2 3/*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Tim Rightnour 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: ofwpci.c,v 1.9 2011/05/17 17:34:51 dyoung Exp $"); 34 35#include "opt_pci.h" 36 37#include <sys/param.h> 38#include <sys/device.h> 39#include <sys/malloc.h> 40#include <sys/extent.h> 41#include <sys/systm.h> 42 43#include <dev/pci/pcivar.h> 44#include <dev/pci/pciconf.h> 45#include <dev/ofw/openfirm.h> 46#include <dev/ofw/ofw_pci.h> 47 48#include <machine/autoconf.h> 49#include <machine/isa_machdep.h> 50#include <machine/pio.h> 51 52struct ofwpci_softc { 53 struct device sc_dev; 54 struct genppc_pci_chipset sc_pc; 55 struct powerpc_bus_space sc_iot; 56 struct powerpc_bus_space sc_memt; 57}; 58 59static void ofwpci_attach(struct device *, struct device *, void *); 60static int ofwpci_match(struct device *, struct cfdata *, void *); 61 62CFATTACH_DECL(ofwpci, sizeof(struct ofwpci_softc), 63 ofwpci_match, ofwpci_attach, NULL, NULL); 64 65extern struct genppc_pci_chipset *genppc_pct; 66extern struct model_data modeldata; 67 68static void 69ofwpci_get_chipset_tag(pci_chipset_tag_t pc) 70{ 71 pc->pc_conf_v = (void *)pc; 72 73 pc->pc_attach_hook = genppc_pci_ofmethod_attach_hook; 74 pc->pc_bus_maxdevs = genppc_pci_bus_maxdevs; 75 pc->pc_make_tag = genppc_pci_ofmethod_make_tag; 76 pc->pc_conf_read = genppc_pci_ofmethod_conf_read; 77 pc->pc_conf_write = genppc_pci_ofmethod_conf_write; 78 79 pc->pc_intr_v = (void *)pc; 80 81 pc->pc_intr_map = genofw_pci_intr_map; 82 pc->pc_intr_string = genppc_pci_intr_string; 83 pc->pc_intr_evcnt = genppc_pci_intr_evcnt; 84 pc->pc_intr_establish = genppc_pci_intr_establish; 85 pc->pc_intr_disestablish = genppc_pci_intr_disestablish; 86 87 pc->pc_conf_interrupt = genppc_pci_conf_interrupt; 88 pc->pc_decompose_tag = genppc_pci_ofmethod_decompose_tag; 89 pc->pc_conf_hook = genofw_pci_conf_hook; 90 91 pc->pc_addr = 0; 92 pc->pc_data = 0; 93 pc->pc_bus = 0; 94 pc->pc_node = 0; 95 pc->pc_memt = 0; 96 pc->pc_iot = 0; 97 pc->pc_ihandle = 0; 98} 99 100static int 101ofwpci_match(struct device *parent, struct cfdata *cf, void *aux) 102{ 103 struct confargs *ca = aux; 104 char name[32]; 105 106 if (strcmp(ca->ca_name, "pci") != 0) 107 return 0; 108 109 memset(name, 0, sizeof(name)); 110 OF_getprop(ca->ca_node, "device_type", name, sizeof(name)); 111 if (strcmp(name, "pci") != 0) 112 return 0; 113 114 return 1; 115} 116 117static void 118ofwpci_attach(struct device *parent, struct device *self, void *aux) 119{ 120 struct ofwpci_softc *sc = (void *)self; 121 pci_chipset_tag_t pc = &sc->sc_pc; 122 struct confargs *ca = aux; 123 struct pcibus_attach_args pba; 124 struct genppc_pci_chipset_businfo *pbi; 125 int node = ca->ca_node; 126 int i, isprim = 0; 127 uint32_t busrange[2]; 128 char buf[64]; 129#ifdef PCI_NETBSD_CONFIGURE 130 struct extent *ioext, *memext; 131#endif 132 133 aprint_normal("\n"); 134 135 /* PCI bus number */ 136 if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8) 137 return; 138 139 /* bus space map the io ranges */ 140 sc->sc_iot.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE; 141 sc->sc_iot.pbs_base = 0x00000000; 142 if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_IO, node, &sc->sc_iot, 143 "ofwpci io-space") != 0) 144 panic("Can't init ofwpci io tag"); 145 146 sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE; 147 sc->sc_memt.pbs_base = 0x00000000; 148 if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_MEM, node, &sc->sc_memt, 149 "ofwpci mem-space") != 0) 150 panic("Can't init ofwpci mem tag"); 151 152 aprint_debug("io base=0x%x offset=0x%x limit=0x%x\n", 153 sc->sc_iot.pbs_base, sc->sc_iot.pbs_offset, sc->sc_iot.pbs_limit); 154 155 aprint_debug("mem base=0x%x offset=0x%x limit=0x%x\n", 156 sc->sc_memt.pbs_base, sc->sc_memt.pbs_offset, 157 sc->sc_memt.pbs_limit); 158 159 /* are we the primary pci bus? */ 160 if (of_find_firstchild_byname(OF_finddevice("/"), "pci") == node) { 161 int isa_node; 162 163 isprim++; 164 /* yes we are, now do we have an ISA child? */ 165 isa_node = of_find_firstchild_byname(node, "isa"); 166 if (isa_node != -1) { 167 /* isa == pci */ 168 genppc_isa_io_space_tag = sc->sc_iot; 169 genppc_isa_mem_space_tag = sc->sc_memt; 170 map_isa_ioregs(); 171 init_ofppc_interrupt(); 172 ofppc_init_comcons(isa_node); 173 } 174 } 175 176 ofwpci_get_chipset_tag(pc); 177 178 pc->pc_node = node; 179 i = OF_package_to_path(node, buf, sizeof(buf)-5); 180 if (i <= 0) 181 panic("Can't determine path for pci node %d", node); 182 buf[i] = '\0'; 183 pc->pc_ihandle = OF_open(buf); 184 if (pc->pc_ihandle < 0) 185 panic("Can't open device %s", buf); 186 pc->pc_bus = busrange[0]; 187 pc->pc_iot = &sc->sc_iot; 188 pc->pc_memt = &sc->sc_memt; 189 190 pbi = malloc(sizeof(struct genppc_pci_chipset_businfo), 191 M_DEVBUF, M_NOWAIT); 192 KASSERT(pbi != NULL); 193 pbi->pbi_properties = prop_dictionary_create(); 194 KASSERT(pbi->pbi_properties != NULL); 195 SIMPLEQ_INIT(&pc->pc_pbi); 196 SIMPLEQ_INSERT_TAIL(&pc->pc_pbi, pbi, next); 197 198 genofw_setup_pciintr_map((void *)pc, pbi, pc->pc_node); 199#ifdef PCI_NETBSD_CONFIGURE 200 ioext = extent_create("pciio", 201 modeldata.pciiodata[device_unit(self)].start, 202 modeldata.pciiodata[device_unit(self)].limit, 203 M_DEVBUF, NULL, 0, EX_NOWAIT); 204 memext = extent_create("pcimem", sc->sc_memt.pbs_base, 205 sc->sc_memt.pbs_limit-1, M_DEVBUF, NULL, 0, EX_NOWAIT); 206 207 if (pci_configure_bus(pc, ioext, memext, NULL, 0, CACHELINESIZE)) 208 aprint_error("pci_configure_bus() failed\n"); 209 210 extent_destroy(ioext); 211 extent_destroy(memext); 212#endif /* PCI_NETBSD_CONFIGURE */ 213 memset(&pba, 0, sizeof(pba)); 214 pba.pba_memt = pc->pc_memt; 215 pba.pba_iot = pc->pc_iot; 216 pba.pba_dmat = &pci_bus_dma_tag; 217 pba.pba_dmat64 = NULL; 218 pba.pba_bus = pc->pc_bus; 219 pba.pba_bridgetag = NULL; 220 pba.pba_pc = pc; 221 pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY; 222 config_found_ia(self, "pcibus", &pba, pcibusprint); 223} 224