1 /* $NetBSD: uninorth.c,v 1.2 2001/07/22 11:29:48 wiz 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 uninorth_softc { 40 struct device sc_dev; 41 struct pci_bridge sc_pc; 42 }; 43 44 void uninorth_attach __P((struct device *, struct device *, void *)); 45 int uninorth_match __P((struct device *, struct cfdata *, void *)); 46 int uninorth_print __P((void *, const char *)); 47 48 pcireg_t uninorth_conf_read __P((pci_chipset_tag_t, pcitag_t, int)); 49 void uninorth_conf_write __P((pci_chipset_tag_t, pcitag_t, int, pcireg_t)); 50 51 struct cfattach uninorth_ca = { 52 sizeof(struct uninorth_softc), uninorth_match, uninorth_attach 53 }; 54 55 int 56 uninorth_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, "uni-north") != 0) 70 return 0; 71 72 return 1; 73 } 74 75 void 76 uninorth_attach(parent, self, aux) 77 struct device *parent, *self; 78 void *aux; 79 { 80 struct uninorth_softc *sc = (void *)self; 81 pci_chipset_tag_t pc = &sc->sc_pc; 82 struct confargs *ca = aux; 83 struct pcibus_attach_args pba; 84 int len, child, node = ca->ca_node; 85 u_int32_t reg[2], busrange[2]; 86 struct ranges { 87 u_int32_t pci_hi, pci_mid, pci_lo; 88 u_int32_t host; 89 u_int32_t size_hi, size_lo; 90 } ranges[6], *rp = ranges; 91 92 printf("\n"); 93 94 /* UniNorth address */ 95 if (OF_getprop(node, "reg", reg, sizeof(reg)) < 8) 96 return; 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(reg[0] + 0x800000, 4); 104 pc->data = mapiodev(reg[0] + 0xc00000, 8); 105 pc->bus = busrange[0]; 106 pc->conf_read = uninorth_conf_read; 107 pc->conf_write = uninorth_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 /* XXX enable gmac ethernet */ 123 for (child = OF_child(node); child; child = OF_peer(child)) { 124 volatile int *gmac_gbclock_en = (void *)0xf8000020; 125 char compat[32]; 126 127 memset(compat, 0, sizeof(compat)); 128 OF_getprop(child, "compatible", compat, sizeof(compat)); 129 if (strcmp(compat, "gmac") == 0) 130 *gmac_gbclock_en |= 0x02; 131 } 132 133 memset(&pba, 0, sizeof(pba)); 134 pba.pba_busname = "pci"; 135 pba.pba_memt = pc->memt; 136 pba.pba_iot = pc->iot; 137 pba.pba_dmat = &pci_bus_dma_tag; 138 pba.pba_bus = pc->bus; 139 pba.pba_pc = pc; 140 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 141 142 config_found(self, &pba, uninorth_print); 143 } 144 145 int 146 uninorth_print(aux, pnp) 147 void *aux; 148 const char *pnp; 149 { 150 struct pcibus_attach_args *pa = aux; 151 152 if (pnp) 153 printf("%s at %s", pa->pba_busname, pnp); 154 printf(" bus %d", pa->pba_bus); 155 return UNCONF; 156 } 157 158 pcireg_t 159 uninorth_conf_read(pc, tag, reg) 160 pci_chipset_tag_t pc; 161 pcitag_t tag; 162 int reg; 163 { 164 int32_t *daddr = pc->data; 165 pcireg_t data; 166 int bus, dev, func, s; 167 u_int32_t x; 168 169 /* UniNorth seems to have a 64bit data port */ 170 if (reg & 0x04) 171 daddr++; 172 173 pci_decompose_tag(pc, tag, &bus, &dev, &func); 174 175 /* 176 * bandit's minimum device number of the first bus is 11. 177 * So we behave as if there is no device when dev < 11. 178 */ 179 if (func > 7) 180 panic("pci_conf_read: func > 7"); 181 182 if (bus == pc->bus) { 183 if (dev < 11) { 184 if (reg == PCI_ID_REG) 185 return 0xffffffff; 186 else 187 panic("pci_conf_read: dev < 11"); 188 } 189 x = (1 << dev) | (func << 8) | reg; 190 } else 191 x = tag | reg | 1; 192 193 s = splhigh(); 194 195 out32rb(pc->addr, x); 196 in32rb(pc->addr); 197 data = 0xffffffff; 198 if (!badaddr(daddr, 4)) 199 data = in32rb(daddr); 200 out32rb(pc->addr, 0); 201 in32rb(pc->addr); 202 splx(s); 203 204 return data; 205 } 206 207 void 208 uninorth_conf_write(pc, tag, reg, data) 209 pci_chipset_tag_t pc; 210 pcitag_t tag; 211 int reg; 212 pcireg_t data; 213 { 214 int32_t *daddr = pc->data; 215 int bus, dev, func, s; 216 u_int32_t x; 217 218 /* UniNorth seems to have a 64bit data port */ 219 if (reg & 0x04) 220 daddr++; 221 222 pci_decompose_tag(pc, tag, &bus, &dev, &func); 223 224 if (func > 7) 225 panic("pci_conf_write: func > 7"); 226 227 if (bus == pc->bus) { 228 if (dev < 11) 229 panic("pci_conf_write: dev < 11"); 230 x = (1 << dev) | (func << 8) | reg; 231 } else 232 x = tag | reg | 1; 233 234 s = splhigh(); 235 236 out32rb(pc->addr, x); 237 in32rb(pc->addr); 238 out32rb(daddr, data); 239 out32rb(pc->addr, 0); 240 in32rb(pc->addr); 241 242 splx(s); 243 } 244