sys/arch/ofppc/pci/ofwpci.c

   1 /* $NetBSD: ofwpci.c,v 1.7 2008/04/08 02:33:03 garbled 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 1.7 2008/04/08 02:33:03 garbled 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
  52 struct 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
  59 static void ofwpci_attach(struct device *, struct device *, void *);
  60 static int ofwpci_match(struct device *, struct cfdata *, void *);
  61
  62 CFATTACH_DECL(ofwpci, sizeof(struct ofwpci_softc),
  63     ofwpci_match, ofwpci_attach, NULL, NULL);
  64
  65 extern struct genppc_pci_chipset *genppc_pct;
  66 extern struct model_data modeldata;
  67
  68 static void
  69 ofwpci_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
 100 static int
 101 ofwpci_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
 117 static void
 118 ofwpci_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_ENABLED | PCI_FLAGS_MEM_ENABLED;
 222         config_found_ia(self, "pcibus", &pba, pcibusprint);
 223 }