1 /* $NetBSD: grackle.c,v 1.3 2002/05/16 01:01:38 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 Tsubai Masanari. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/device.h> 31 #include <sys/systm.h> 32 33 #include <dev/pci/pcivar.h> 34 #include <dev/ofw/openfirm.h> 35 #include <dev/ofw/ofw_pci.h> 36 37 #include <machine/autoconf.h> 38 39 struct grackle_softc { 40 struct device sc_dev; 41 struct pci_bridge sc_pc; 42 }; 43 44 void grackle_attach __P((struct device *, struct device *, void *)); 45 int grackle_match __P((struct device *, struct cfdata *, void *)); 46 int grackle_print __P((void *, const char *)); 47 48 pcireg_t grackle_conf_read __P((pci_chipset_tag_t, pcitag_t, int)); 49 void grackle_conf_write __P((pci_chipset_tag_t, pcitag_t, int, pcireg_t)); 50 51 struct cfattach grackle_ca = { 52 sizeof(struct grackle_softc), grackle_match, grackle_attach 53 }; 54 55 int 56 grackle_match(parent, cf, aux) 57 struct device *parent; 58 struct cfdata *cf; 59 void *aux; 60 { 61 struct confargs *ca = aux; 62 char compat[32]; 63 64 if (strcmp(ca->ca_name, "pci") != 0) 65 return 0; 66 67 memset(compat, 0, sizeof(compat)); 68 OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat)); 69 if (strcmp(compat, "grackle") != 0) 70 return 0; 71 72 return 1; 73 } 74 75 #define GRACKLE_ADDR 0xfec00000 76 #define GRACKLE_DATA 0xfee00000 77 78 void 79 grackle_attach(parent, self, aux) 80 struct device *parent, *self; 81 void *aux; 82 { 83 struct grackle_softc *sc = (void *)self; 84 pci_chipset_tag_t pc = &sc->sc_pc; 85 struct confargs *ca = aux; 86 struct pcibus_attach_args pba; 87 int len, node = ca->ca_node; 88 u_int32_t busrange[2]; 89 struct ranges { 90 u_int32_t pci_hi, pci_mid, pci_lo; 91 u_int32_t host; 92 u_int32_t size_hi, size_lo; 93 } ranges[6], *rp = ranges; 94 95 printf("\n"); 96 97 /* PCI bus number */ 98 if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8) 99 return; 100 101 pc->node = node; 102 pc->addr = mapiodev(GRACKLE_ADDR, 4); 103 pc->data = mapiodev(GRACKLE_DATA, 4); 104 pc->bus = busrange[0]; 105 pc->conf_read = grackle_conf_read; 106 pc->conf_write = grackle_conf_write; 107 pc->memt = (bus_space_tag_t)0; 108 109 /* find i/o tag */ 110 len = OF_getprop(node, "ranges", ranges, sizeof(ranges)); 111 if (len == -1) 112 return; 113 while (len >= sizeof(ranges[0])) { 114 if ((rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) == 115 OFW_PCI_PHYS_HI_SPACE_IO) 116 pc->iot = (bus_space_tag_t)rp->host; 117 len -= sizeof(ranges[0]); 118 rp++; 119 } 120 121 memset(&pba, 0, sizeof(pba)); 122 pba.pba_busname = "pci"; 123 pba.pba_memt = pc->memt; 124 pba.pba_iot = pc->iot; 125 pba.pba_dmat = &pci_bus_dma_tag; 126 pba.pba_bus = pc->bus; 127 pba.pba_bridgetag = NULL; 128 pba.pba_pc = pc; 129 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 130 131 config_found(self, &pba, grackle_print); 132 } 133 134 int 135 grackle_print(aux, pnp) 136 void *aux; 137 const char *pnp; 138 { 139 struct pcibus_attach_args *pa = aux; 140 141 if (pnp) 142 printf("%s at %s", pa->pba_busname, pnp); 143 printf(" bus %d", pa->pba_bus); 144 return UNCONF; 145 } 146 147 pcireg_t 148 grackle_conf_read(pc, tag, reg) 149 pci_chipset_tag_t pc; 150 pcitag_t tag; 151 int reg; 152 { 153 pcireg_t data; 154 int s; 155 156 s = splhigh(); 157 158 out32rb(pc->addr, tag | reg); 159 data = 0xffffffff; 160 if (!badaddr(pc->data, 4)) 161 data = in32rb(pc->data); 162 out32rb(pc->addr, 0); 163 164 splx(s); 165 166 return data; 167 } 168 169 void 170 grackle_conf_write(pc, tag, reg, data) 171 pci_chipset_tag_t pc; 172 pcitag_t tag; 173 int reg; 174 pcireg_t data; 175 { 176 int s; 177 178 s = splhigh(); 179 180 out32rb(pc->addr, tag | reg); 181 out32rb(pc->data, data); 182 out32rb(pc->addr, 0); 183 184 splx(s); 185 } 186