1 /* $NetBSD: grackle.c,v 1.10 2005/12/11 12:18:06 christos 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 1.10 2005/12/11 12:18:06 christos 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 50 pcireg_t grackle_conf_read __P((pci_chipset_tag_t, pcitag_t, int)); 51 void grackle_conf_write __P((pci_chipset_tag_t, pcitag_t, int, pcireg_t)); 52 53 CFATTACH_DECL(grackle, sizeof(struct grackle_softc), 54 grackle_match, grackle_attach, NULL, NULL); 55 56 int 57 grackle_match(parent, cf, aux) 58 struct device *parent; 59 struct cfdata *cf; 60 void *aux; 61 { 62 struct confargs *ca = aux; 63 char compat[32]; 64 65 if (strcmp(ca->ca_name, "pci") != 0) 66 return 0; 67 68 memset(compat, 0, sizeof(compat)); 69 OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat)); 70 if (strcmp(compat, "grackle") != 0) 71 return 0; 72 73 return 1; 74 } 75 76 #define GRACKLE_ADDR 0xfec00000 77 #define GRACKLE_DATA 0xfee00000 78 79 void 80 grackle_attach(parent, self, aux) 81 struct device *parent, *self; 82 void *aux; 83 { 84 struct grackle_softc *sc = (void *)self; 85 pci_chipset_tag_t pc = &sc->sc_pc; 86 struct confargs *ca = aux; 87 struct pcibus_attach_args pba; 88 int len, node = ca->ca_node; 89 u_int32_t busrange[2]; 90 struct ranges { 91 u_int32_t pci_hi, pci_mid, pci_lo; 92 u_int32_t host; 93 u_int32_t size_hi, size_lo; 94 } ranges[6], *rp = ranges; 95 96 printf("\n"); 97 98 /* PCI bus number */ 99 if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8) 100 return; 101 102 pc->node = node; 103 pc->addr = mapiodev(GRACKLE_ADDR, 4); 104 pc->data = mapiodev(GRACKLE_DATA, 4); 105 pc->bus = busrange[0]; 106 pc->conf_read = grackle_conf_read; 107 pc->conf_write = grackle_conf_write; 108 pc->memt = (bus_space_tag_t)0; 109 110 /* find i/o tag */ 111 len = OF_getprop(node, "ranges", ranges, sizeof(ranges)); 112 if (len == -1) 113 return; 114 while (len >= sizeof(ranges[0])) { 115 if ((rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) == 116 OFW_PCI_PHYS_HI_SPACE_IO) 117 pc->iot = (bus_space_tag_t)rp->host; 118 len -= sizeof(ranges[0]); 119 rp++; 120 } 121 122 memset(&pba, 0, sizeof(pba)); 123 pba.pba_memt = pc->memt; 124 pba.pba_iot = pc->iot; 125 pba.pba_dmat = &pci_bus_dma_tag; 126 pba.pba_dmat64 = NULL; 127 pba.pba_bus = pc->bus; 128 pba.pba_bridgetag = NULL; 129 pba.pba_pc = pc; 130 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 131 132 config_found_ia(self, "pcibus", &pba, pcibusprint); 133 } 134 135 pcireg_t 136 grackle_conf_read(pc, tag, reg) 137 pci_chipset_tag_t pc; 138 pcitag_t tag; 139 int reg; 140 { 141 pcireg_t data; 142 int s; 143 144 s = splhigh(); 145 146 out32rb(pc->addr, tag | reg); 147 data = 0xffffffff; 148 if (!badaddr(pc->data, 4)) 149 data = in32rb(pc->data); 150 out32rb(pc->addr, 0); 151 152 splx(s); 153 154 return data; 155 } 156 157 void 158 grackle_conf_write(pc, tag, reg, data) 159 pci_chipset_tag_t pc; 160 pcitag_t tag; 161 int reg; 162 pcireg_t data; 163 { 164 int s; 165 166 s = splhigh(); 167 168 out32rb(pc->addr, tag | reg); 169 out32rb(pc->data, data); 170 out32rb(pc->addr, 0); 171 172 splx(s); 173 } 174