irongate.c revision 1.6
1 /* $NetBSD: irongate.c,v 1.6 2001/10/06 02:51:42 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of Wasabi Systems, Inc. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include "opt_api_up1000.h" 40 41 #include <sys/cdefs.h> 42 43 __KERNEL_RCSID(0, "$NetBSD: irongate.c,v 1.6 2001/10/06 02:51:42 thorpej Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/device.h> 48 #include <sys/malloc.h> 49 50 #include <machine/autoconf.h> 51 #include <machine/rpb.h> 52 #include <machine/sysarch.h> 53 54 #include <dev/isa/isareg.h> 55 #include <dev/isa/isavar.h> 56 #include <dev/pci/pcireg.h> 57 #include <dev/pci/pcivar.h> 58 #include <dev/pci/agpvar.h> 59 60 #include <alpha/pci/irongatereg.h> 61 #include <alpha/pci/irongatevar.h> 62 63 #ifdef API_UP1000 64 #include <alpha/pci/pci_up1000.h> 65 #endif 66 67 int irongate_match(struct device *, struct cfdata *, void *); 68 void irongate_attach(struct device *, struct device *, void *); 69 70 struct cfattach irongate_ca = { 71 sizeof(struct irongate_softc), irongate_match, irongate_attach, 72 }; 73 74 int irongate_print(void *, const char *pnp); 75 76 extern struct cfdriver irongate_cd; 77 78 /* There can be only one. */ 79 struct irongate_config irongate_configuration; 80 int irongate_found; 81 82 int irongate_bus_get_window(int, int, 83 struct alpha_bus_space_translation *); 84 85 /* 86 * Set up the chipset's function pointers. 87 */ 88 void 89 irongate_init(struct irongate_config *icp, int mallocsafe) 90 { 91 pcitag_t tag; 92 pcireg_t reg; 93 94 icp->ic_mallocsafe = mallocsafe; 95 96 /* 97 * Set up PCI configuration space; we can only read the 98 * revision info through configuration space. 99 */ 100 irongate_pci_init(&icp->ic_pc, icp); 101 alpha_pci_chipset = &icp->ic_pc; 102 103 tag = pci_make_tag(&icp->ic_pc, 0, IRONGATE_PCIHOST_DEV, 0); 104 105 /* Read the revision. */ 106 reg = irongate_conf_read0(icp, tag, PCI_CLASS_REG); 107 icp->ic_rev = PCI_REVISION(reg); 108 109 if (icp->ic_initted == 0) { 110 /* Don't do these twice, since they set up extents. */ 111 irongate_bus_io_init(&icp->ic_iot, icp); 112 irongate_bus_mem_init(&icp->ic_memt, icp); 113 114 /* Only one each PCI I/O and MEM window. */ 115 alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_IO] = 1; 116 alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_MEM] = 1; 117 118 alpha_bus_get_window = irongate_bus_get_window; 119 } 120 121 icp->ic_initted = 1; 122 } 123 124 int 125 irongate_match(struct device *parent, struct cfdata *match, void *aux) 126 { 127 struct mainbus_attach_args *ma = aux; 128 129 /* Make sure we're looking for an Irongate. */ 130 if (strcmp(ma->ma_name, irongate_cd.cd_name) != 0) 131 return (0); 132 133 if (irongate_found) 134 return (0); 135 136 return (1); 137 } 138 139 void 140 irongate_attach(struct device *parent, struct device *self, void *aux) 141 { 142 struct irongate_softc *sc = (void *) self; 143 struct irongate_config *icp; 144 struct pcibus_attach_args pba; 145 struct agpbus_attach_args apa; 146 pcitag_t tag; 147 148 /* Note that we've attached the chipset; can't have 2 Irongates. */ 149 irongate_found = 1; 150 151 /* 152 * Set up the chipset's info; done once at console init time 153 * (maybe), but we must do it here as well to take care of things 154 * that need to use memory allocation. 155 */ 156 icp = sc->sc_icp = &irongate_configuration; 157 irongate_init(icp, 1); 158 159 printf(": AMD 751 Core Logic + AGP Chipset, rev. %d\n", icp->ic_rev); 160 161 irongate_dma_init(icp); 162 163 /* 164 * Do PCI memory initialization that needs to be deferred until 165 * malloc is safe. 166 */ 167 irongate_bus_mem_init2(&icp->ic_memt, icp); 168 169 switch (cputype) { 170 #ifdef API_UP1000 171 case ST_API_NAUTILUS: 172 pci_up1000_pickintr(icp); 173 break; 174 #endif 175 176 default: 177 panic("irongate_attach: shouldn't be here, really..."); 178 } 179 180 tag = pci_make_tag(&icp->ic_pc, 0, IRONGATE_PCIHOST_DEV, 0); 181 182 pba.pba_busname = "pci"; 183 pba.pba_iot = &icp->ic_iot; 184 pba.pba_memt = &icp->ic_memt; 185 pba.pba_dmat = 186 alphabus_dma_get_tag(&icp->ic_dmat_pci, ALPHA_BUS_PCI); 187 pba.pba_pc = &icp->ic_pc; 188 pba.pba_bus = 0; 189 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | 190 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY; 191 192 if (pci_get_capability(&icp->ic_pc, tag, PCI_CAP_AGP, 193 NULL, NULL) != 0) { 194 apa.apa_busname = "agp"; 195 apa.apa_pci_args.pa_iot = pba.pba_iot; 196 apa.apa_pci_args.pa_memt = pba.pba_memt; 197 apa.apa_pci_args.pa_dmat = pba.pba_dmat; 198 apa.apa_pci_args.pa_pc = pba.pba_pc; 199 apa.apa_pci_args.pa_bus = pba.pba_bus; 200 apa.apa_pci_args.pa_device = IRONGATE_PCIHOST_DEV; 201 apa.apa_pci_args.pa_function = 0; 202 apa.apa_pci_args.pa_tag = tag; 203 apa.apa_pci_args.pa_id = 204 irongate_conf_read0(icp, tag, PCI_ID_REG); 205 apa.apa_pci_args.pa_class = 206 irongate_conf_read0(icp, tag, PCI_CLASS_REG); 207 apa.apa_pci_args.pa_flags = pba.pba_flags; 208 209 (void) config_found(self, &apa, irongate_print); 210 } 211 212 (void) config_found(self, &pba, irongate_print); 213 } 214 215 int 216 irongate_print(void *aux, const char *pnp) 217 { 218 struct pcibus_attach_args *pba = aux; 219 220 /* Only PCIs can attach to Irongates; easy. */ 221 if (pnp != NULL) 222 printf("%s at %s", pba->pba_busname, pnp); 223 if (strcmp(pba->pba_busname, "pci") == 0) 224 printf(" bus %d", pba->pba_bus); 225 return (UNCONF); 226 } 227 228 int 229 irongate_bus_get_window(int type, int window, 230 struct alpha_bus_space_translation *abst) 231 { 232 struct irongate_config *icp = &irongate_configuration; 233 bus_space_tag_t st; 234 int error; 235 236 switch (type) { 237 case ALPHA_BUS_TYPE_PCI_IO: 238 st = &icp->ic_iot; 239 break; 240 241 case ALPHA_BUS_TYPE_PCI_MEM: 242 st = &icp->ic_memt; 243 break; 244 245 default: 246 panic("irongate_bus_get_window"); 247 } 248 249 error = alpha_bus_space_get_window(st, window, abst); 250 if (error) 251 return (error); 252 253 abst->abst_sys_start = IRONGATE_PHYSADDR(abst->abst_sys_start); 254 abst->abst_sys_end = IRONGATE_PHYSADDR(abst->abst_sys_end); 255 256 return (0); 257 } 258
Indexes created Mon Sep 29 21:09:56 GMT 2025