grackle.c revision 1.8
1 /* $NetBSD: grackle.c,v 1.8 2003/07/15 02:43:33 lukem 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/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: grackle.c,v 1.8 2003/07/15 02:43:33 lukem Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/device.h> 34 #include <sys/systm.h> 35 36 #include <dev/pci/pcivar.h> 37 #include <dev/ofw/openfirm.h> 38 #include <dev/ofw/ofw_pci.h> 39 40 #include <machine/autoconf.h> 41 42 struct grackle_softc { 43 struct device sc_dev; 44 struct pci_bridge sc_pc; 45 }; 46 47 void grackle_attach __P((struct device *, struct device *, void *)); 48 int grackle_match __P((struct device *, struct cfdata *, void *)); 49 int grackle_print __P((void *, const char *)); 50 51 pcireg_t grackle_conf_read __P((pci_chipset_tag_t, pcitag_t, int)); 52 void grackle_conf_write __P((pci_chipset_tag_t, pcitag_t, int, pcireg_t)); 53 54 CFATTACH_DECL(grackle, sizeof(struct grackle_softc), 55 grackle_match, grackle_attach, NULL, NULL); 56 57 int 58 grackle_match(parent, cf, aux) 59 struct device *parent; 60 struct cfdata *cf; 61 void *aux; 62 { 63 struct confargs *ca = aux; 64 char compat[32]; 65 66 if (strcmp(ca->ca_name, "pci") != 0) 67 return 0; 68 69 memset(compat, 0, sizeof(compat)); 70 OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat)); 71 if (strcmp(compat, "grackle") != 0) 72 return 0; 73 74 return 1; 75 } 76 77 #define GRACKLE_ADDR 0xfec00000 78 #define GRACKLE_DATA 0xfee00000 79 80 void 81 grackle_attach(parent, self, aux) 82 struct device *parent, *self; 83 void *aux; 84 { 85 struct grackle_softc *sc = (void *)self; 86 pci_chipset_tag_t pc = &sc->sc_pc; 87 struct confargs *ca = aux; 88 struct pcibus_attach_args pba; 89 int len, node = ca->ca_node; 90 u_int32_t busrange[2]; 91 struct ranges { 92 u_int32_t pci_hi, pci_mid, pci_lo; 93 u_int32_t host; 94 u_int32_t size_hi, size_lo; 95 } ranges[6], *rp = ranges; 96 97 printf("\n"); 98 99 /* PCI bus number */ 100 if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8) 101 return; 102 103 pc->node = node; 104 pc->addr = mapiodev(GRACKLE_ADDR, 4); 105 pc->data = mapiodev(GRACKLE_DATA, 4); 106 pc->bus = busrange[0]; 107 pc->conf_read = grackle_conf_read; 108 pc->conf_write = grackle_conf_write; 109 pc->memt = (bus_space_tag_t)0; 110 111 /* find i/o tag */ 112 len = OF_getprop(node, "ranges", ranges, sizeof(ranges)); 113 if (len == -1) 114 return; 115 while (len >= sizeof(ranges[0])) { 116 if ((rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) == 117 OFW_PCI_PHYS_HI_SPACE_IO) 118 pc->iot = (bus_space_tag_t)rp->host; 119 len -= sizeof(ranges[0]); 120 rp++; 121 } 122 123 memset(&pba, 0, sizeof(pba)); 124 pba.pba_busname = "pci"; 125 pba.pba_memt = pc->memt; 126 pba.pba_iot = pc->iot; 127 pba.pba_dmat = &pci_bus_dma_tag; 128 pba.pba_dmat64 = NULL; 129 pba.pba_bus = pc->bus; 130 pba.pba_bridgetag = NULL; 131 pba.pba_pc = pc; 132 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 133 134 config_found(self, &pba, grackle_print); 135 } 136 137 int 138 grackle_print(aux, pnp) 139 void *aux; 140 const char *pnp; 141 { 142 struct pcibus_attach_args *pa = aux; 143 144 if (pnp) 145 aprint_normal("%s at %s", pa->pba_busname, pnp); 146 aprint_normal(" bus %d", pa->pba_bus); 147 return UNCONF; 148 } 149 150 pcireg_t 151 grackle_conf_read(pc, tag, reg) 152 pci_chipset_tag_t pc; 153 pcitag_t tag; 154 int reg; 155 { 156 pcireg_t data; 157 int s; 158 159 s = splhigh(); 160 161 out32rb(pc->addr, tag | reg); 162 data = 0xffffffff; 163 if (!badaddr(pc->data, 4)) 164 data = in32rb(pc->data); 165 out32rb(pc->addr, 0); 166 167 splx(s); 168 169 return data; 170 } 171 172 void 173 grackle_conf_write(pc, tag, reg, data) 174 pci_chipset_tag_t pc; 175 pcitag_t tag; 176 int reg; 177 pcireg_t data; 178 { 179 int s; 180 181 s = splhigh(); 182 183 out32rb(pc->addr, tag | reg); 184 out32rb(pc->data, data); 185 out32rb(pc->addr, 0); 186 187 splx(s); 188 } 189
Indexes created Fri Sep 26 20:09:58 GMT 2025