irongate.c revision 1.11.2.3
1 /* $NetBSD: irongate.c,v 1.11.2.3 2004/09/21 13:12:01 skrll 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 1.11.2.3 2004/09/21 13:12:01 skrll 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 CFATTACH_DECL(irongate, sizeof(struct irongate_softc), 71 irongate_match, irongate_attach, NULL, NULL); 72 73 extern struct cfdriver irongate_cd; 74 75 /* There can be only one. */ 76 struct irongate_config irongate_configuration; 77 int irongate_found; 78 79 int irongate_bus_get_window(int, int, 80 struct alpha_bus_space_translation *); 81 82 /* 83 * Set up the chipset's function pointers. 84 */ 85 void 86 irongate_init(struct irongate_config *icp, int mallocsafe) 87 { 88 pcitag_t tag; 89 pcireg_t reg; 90 91 icp->ic_mallocsafe = mallocsafe; 92 93 /* 94 * Set up PCI configuration space; we can only read the 95 * revision info through configuration space. 96 */ 97 irongate_pci_init(&icp->ic_pc, icp); 98 alpha_pci_chipset = &icp->ic_pc; 99 100 tag = pci_make_tag(&icp->ic_pc, 0, IRONGATE_PCIHOST_DEV, 0); 101 102 /* Read the revision. */ 103 reg = irongate_conf_read0(icp, tag, PCI_CLASS_REG); 104 icp->ic_rev = PCI_REVISION(reg); 105 106 if (icp->ic_initted == 0) { 107 /* Don't do these twice, since they set up extents. */ 108 irongate_bus_io_init(&icp->ic_iot, icp); 109 irongate_bus_mem_init(&icp->ic_memt, icp); 110 111 /* Only one each PCI I/O and MEM window. */ 112 alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_IO] = 1; 113 alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_MEM] = 1; 114 115 alpha_bus_get_window = irongate_bus_get_window; 116 } 117 118 icp->ic_initted = 1; 119 } 120 121 int 122 irongate_match(struct device *parent, struct cfdata *match, void *aux) 123 { 124 struct mainbus_attach_args *ma = aux; 125 126 /* Make sure we're looking for an Irongate. */ 127 if (strcmp(ma->ma_name, irongate_cd.cd_name) != 0) 128 return (0); 129 130 if (irongate_found) 131 return (0); 132 133 return (1); 134 } 135 136 void 137 irongate_attach(struct device *parent, struct device *self, void *aux) 138 { 139 struct irongate_softc *sc = (void *) self; 140 struct irongate_config *icp; 141 struct pcibus_attach_args pba; 142 struct agpbus_attach_args apa; 143 pcitag_t tag; 144 145 /* Note that we've attached the chipset; can't have 2 Irongates. */ 146 irongate_found = 1; 147 148 /* 149 * Set up the chipset's info; done once at console init time 150 * (maybe), but we must do it here as well to take care of things 151 * that need to use memory allocation. 152 */ 153 icp = sc->sc_icp = &irongate_configuration; 154 irongate_init(icp, 1); 155 156 printf(": AMD 751 Core Logic + AGP Chipset, rev. %d\n", icp->ic_rev); 157 158 irongate_dma_init(icp); 159 160 /* 161 * Do PCI memory initialization that needs to be deferred until 162 * malloc is safe. 163 */ 164 irongate_bus_mem_init2(&icp->ic_memt, icp); 165 166 switch (cputype) { 167 #ifdef API_UP1000 168 case ST_API_NAUTILUS: 169 pci_up1000_pickintr(icp); 170 break; 171 #endif 172 173 default: 174 panic("irongate_attach: shouldn't be here, really..."); 175 } 176 177 tag = pci_make_tag(&icp->ic_pc, 0, IRONGATE_PCIHOST_DEV, 0); 178 179 pba.pba_iot = &icp->ic_iot; 180 pba.pba_memt = &icp->ic_memt; 181 pba.pba_dmat = 182 alphabus_dma_get_tag(&icp->ic_dmat_pci, ALPHA_BUS_PCI); 183 pba.pba_dmat64 = NULL; 184 pba.pba_pc = &icp->ic_pc; 185 pba.pba_bus = 0; 186 pba.pba_bridgetag = NULL; 187 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | 188 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY; 189 190 if (pci_get_capability(&icp->ic_pc, tag, PCI_CAP_AGP, 191 NULL, NULL) != 0) { 192 apa.apa_pci_args.pa_iot = pba.pba_iot; 193 apa.apa_pci_args.pa_memt = pba.pba_memt; 194 apa.apa_pci_args.pa_dmat = pba.pba_dmat; 195 apa.apa_pci_args.pa_pc = pba.pba_pc; 196 apa.apa_pci_args.pa_bus = pba.pba_bus; 197 apa.apa_pci_args.pa_device = IRONGATE_PCIHOST_DEV; 198 apa.apa_pci_args.pa_function = 0; 199 apa.apa_pci_args.pa_tag = tag; 200 apa.apa_pci_args.pa_id = 201 irongate_conf_read0(icp, tag, PCI_ID_REG); 202 apa.apa_pci_args.pa_class = 203 irongate_conf_read0(icp, tag, PCI_CLASS_REG); 204 apa.apa_pci_args.pa_flags = pba.pba_flags; 205 206 (void) config_found_ia(self, "agpbus", &apa, agpbusprint); 207 } 208 209 (void) config_found_ia(self, "pcibus", &pba, pcibusprint); 210 } 211 212 int 213 irongate_bus_get_window(int type, int window, 214 struct alpha_bus_space_translation *abst) 215 { 216 struct irongate_config *icp = &irongate_configuration; 217 bus_space_tag_t st; 218 int error; 219 220 switch (type) { 221 case ALPHA_BUS_TYPE_PCI_IO: 222 st = &icp->ic_iot; 223 break; 224 225 case ALPHA_BUS_TYPE_PCI_MEM: 226 st = &icp->ic_memt; 227 break; 228 229 default: 230 panic("irongate_bus_get_window"); 231 } 232 233 error = alpha_bus_space_get_window(st, window, abst); 234 if (error) 235 return (error); 236 237 abst->abst_sys_start = IRONGATE_PHYSADDR(abst->abst_sys_start); 238 abst->abst_sys_end = IRONGATE_PHYSADDR(abst->abst_sys_end); 239 240 return (0); 241 } 242
Indexes created Thu Oct 23 22:10:10 GMT 2025