ofwpci.c revision 1.13
1/* $NetBSD: ofwpci.c,v 1.13 2016/10/19 00:08:41 nonaka 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 1.13 2016/10/19 00:08:41 nonaka 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 device_t 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(device_t, device_t, void *); 60static int ofwpci_match(device_t, cfdata_t, void *); 61 62CFATTACH_DECL_NEW(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 pc->pc_intr_setattr = genppc_pci_intr_setattr; 87 pc->pc_intr_type = genppc_pci_intr_type; 88 pc->pc_intr_alloc = genppc_pci_intr_alloc; 89 pc->pc_intr_release = genppc_pci_intr_release; 90 pc->pc_intx_alloc = genppc_pci_intx_alloc; 91 92 pc->pc_msi_v = (void *)pc; 93 genppc_pci_chipset_msi_init(pc); 94 95 pc->pc_msix_v = (void *)pc; 96 genppc_pci_chipset_msix_init(pc); 97 98 pc->pc_conf_interrupt = genppc_pci_conf_interrupt; 99 pc->pc_decompose_tag = genppc_pci_ofmethod_decompose_tag; 100 pc->pc_conf_hook = genofw_pci_conf_hook; 101 102 pc->pc_addr = 0; 103 pc->pc_data = 0; 104 pc->pc_bus = 0; 105 pc->pc_node = 0; 106 pc->pc_memt = 0; 107 pc->pc_iot = 0; 108 pc->pc_ihandle = 0; 109} 110 111static int 112ofwpci_match(device_t parent, cfdata_t cf, void *aux) 113{ 114 struct confargs *ca = aux; 115 char name[32]; 116 117 if (strcmp(ca->ca_name, "pci") != 0) 118 return 0; 119 120 memset(name, 0, sizeof(name)); 121 OF_getprop(ca->ca_node, "device_type", name, sizeof(name)); 122 if (strcmp(name, "pci") != 0) 123 return 0; 124 125 return 1; 126} 127 128static void 129ofwpci_attach(device_t parent, device_t self, void *aux) 130{ 131 struct ofwpci_softc *sc = device_private(self); 132 pci_chipset_tag_t pc = &sc->sc_pc; 133 struct confargs *ca = aux; 134 struct pcibus_attach_args pba; 135 struct genppc_pci_chipset_businfo *pbi; 136 int node = ca->ca_node; 137 int i, isprim = 0; 138 uint32_t busrange[2]; 139 char buf[64]; 140#ifdef PCI_NETBSD_CONFIGURE 141 struct extent *ioext, *memext; 142#endif 143 144 aprint_normal("\n"); 145 146 sc->sc_dev = self; 147 148 /* PCI bus number */ 149 if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8) 150 return; 151 152 /* bus space map the io ranges */ 153 sc->sc_iot.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_IO_TYPE; 154 sc->sc_iot.pbs_base = 0x00000000; 155 if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_IO, node, &sc->sc_iot, 156 "ofwpci io-space") != 0) 157 panic("Can't init ofwpci io tag"); 158 159 sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE; 160 sc->sc_memt.pbs_base = 0x00000000; 161 if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_MEM, node, &sc->sc_memt, 162 "ofwpci mem-space") != 0) 163 panic("Can't init ofwpci mem tag"); 164 165 aprint_debug("io base=0x%"PRIxPTR" offset=0x%"PRIxPTR" limit=0x%"PRIxPTR"\n", 166 sc->sc_iot.pbs_base, sc->sc_iot.pbs_offset, sc->sc_iot.pbs_limit); 167 168 aprint_debug("mem base=0x%"PRIxPTR" offset=0x%"PRIxPTR" limit=0x%"PRIxPTR"\n", 169 sc->sc_memt.pbs_base, sc->sc_memt.pbs_offset, 170 sc->sc_memt.pbs_limit); 171 172 /* are we the primary pci bus? */ 173 if (of_find_firstchild_byname(OF_finddevice("/"), "pci") == node) { 174 int isa_node; 175 176 isprim++; 177 /* yes we are, now do we have an ISA child? */ 178 isa_node = of_find_firstchild_byname(node, "isa"); 179 if (isa_node != -1) { 180 /* isa == pci */ 181 genppc_isa_io_space_tag = sc->sc_iot; 182 genppc_isa_mem_space_tag = sc->sc_memt; 183 map_isa_ioregs(); 184 init_ofppc_interrupt(); 185 ofppc_init_comcons(isa_node); 186 } 187 } 188 189 ofwpci_get_chipset_tag(pc); 190 191 pc->pc_node = node; 192 i = OF_package_to_path(node, buf, sizeof(buf)-5); 193 if (i <= 0) 194 panic("Can't determine path for pci node %d", node); 195 buf[i] = '\0'; 196 pc->pc_ihandle = OF_open(buf); 197 if (pc->pc_ihandle < 0) 198 panic("Can't open device %s", buf); 199 pc->pc_bus = busrange[0]; 200 pc->pc_iot = &sc->sc_iot; 201 pc->pc_memt = &sc->sc_memt; 202 203 pbi = malloc(sizeof(struct genppc_pci_chipset_businfo), 204 M_DEVBUF, M_NOWAIT); 205 KASSERT(pbi != NULL); 206 pbi->pbi_properties = prop_dictionary_create(); 207 KASSERT(pbi->pbi_properties != NULL); 208 SIMPLEQ_INIT(&pc->pc_pbi); 209 SIMPLEQ_INSERT_TAIL(&pc->pc_pbi, pbi, next); 210 211 genofw_setup_pciintr_map((void *)pc, pbi, pc->pc_node); 212#ifdef PCI_NETBSD_CONFIGURE 213 ioext = extent_create("pciio", 214 modeldata.pciiodata[device_unit(self)].start, 215 modeldata.pciiodata[device_unit(self)].limit, 216 NULL, 0, EX_NOWAIT); 217 memext = extent_create("pcimem", sc->sc_memt.pbs_base, 218 sc->sc_memt.pbs_limit-1, NULL, 0, EX_NOWAIT); 219 220 if (pci_configure_bus(pc, ioext, memext, NULL, 0, CACHELINESIZE)) 221 aprint_error("pci_configure_bus() failed\n"); 222 223 extent_destroy(ioext); 224 extent_destroy(memext); 225#endif /* PCI_NETBSD_CONFIGURE */ 226 memset(&pba, 0, sizeof(pba)); 227 pba.pba_memt = pc->pc_memt; 228 pba.pba_iot = pc->pc_iot; 229 pba.pba_dmat = &pci_bus_dma_tag; 230 pba.pba_dmat64 = NULL; 231 pba.pba_bus = pc->pc_bus; 232 pba.pba_bridgetag = NULL; 233 pba.pba_pc = pc; 234 pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY; 235 config_found_ia(self, "pcibus", &pba, pcibusprint); 236} 237