apecs.c revision 1.51.2.1
1 /* $NetBSD: apecs.c,v 1.51.2.1 2011/06/06 09:04:44 jruoho Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 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. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 34 * All rights reserved. 35 * 36 * Author: Chris G. Demetriou 37 * 38 * Permission to use, copy, modify and distribute this software and 39 * its documentation is hereby granted, provided that both the copyright 40 * notice and this permission notice appear in all copies of the 41 * software, derivative works or modified versions, and any portions 42 * thereof, and that both notices appear in supporting documentation. 43 * 44 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 45 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 46 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 47 * 48 * Carnegie Mellon requests users of this software to return to 49 * 50 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 51 * School of Computer Science 52 * Carnegie Mellon University 53 * Pittsburgh PA 15213-3890 54 * 55 * any improvements or extensions that they make and grant Carnegie the 56 * rights to redistribute these changes. 57 */ 58 59 #include "opt_dec_2100_a50.h" 60 #include "opt_dec_eb64plus.h" 61 #include "opt_dec_1000a.h" 62 #include "opt_dec_1000.h" 63 64 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 65 66 __KERNEL_RCSID(0, "$NetBSD: apecs.c,v 1.51.2.1 2011/06/06 09:04:44 jruoho Exp $"); 67 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/kernel.h> 71 #include <sys/malloc.h> 72 #include <sys/device.h> 73 74 #include <machine/autoconf.h> 75 #include <machine/rpb.h> 76 #include <machine/sysarch.h> 77 78 #include <dev/isa/isareg.h> 79 #include <dev/isa/isavar.h> 80 81 #include <dev/pci/pcireg.h> 82 #include <dev/pci/pcivar.h> 83 #include <alpha/pci/apecsreg.h> 84 #include <alpha/pci/apecsvar.h> 85 #ifdef DEC_2100_A50 86 #include <alpha/pci/pci_2100_a50.h> 87 #endif 88 #ifdef DEC_EB64PLUS 89 #include <alpha/pci/pci_eb64plus.h> 90 #endif 91 #ifdef DEC_1000A 92 #include <alpha/pci/pci_1000a.h> 93 #endif 94 #ifdef DEC_1000 95 #include <alpha/pci/pci_1000.h> 96 #endif 97 98 static int apecsmatch(device_t, cfdata_t, void *); 99 static void apecsattach(device_t, device_t, void *); 100 101 CFATTACH_DECL_NEW(apecs, 0, apecsmatch, apecsattach, NULL, NULL); 102 103 extern struct cfdriver apecs_cd; 104 105 static int apecs_bus_get_window(int, int, 106 struct alpha_bus_space_translation *); 107 108 /* There can be only one. */ 109 int apecsfound; 110 struct apecs_config apecs_configuration; 111 112 static int 113 apecsmatch(device_t parent, cfdata_t match, void *aux) 114 { 115 struct mainbus_attach_args *ma = aux; 116 117 /* Make sure that we're looking for an APECS. */ 118 if (strcmp(ma->ma_name, apecs_cd.cd_name) != 0) 119 return (0); 120 121 if (apecsfound) 122 return (0); 123 124 return (1); 125 } 126 127 /* 128 * Set up the chipset's function pointers. 129 */ 130 void 131 apecs_init(struct apecs_config *acp, int mallocsafe) 132 { 133 acp->ac_comanche_pass2 = 134 (REGVAL(COMANCHE_ED) & COMANCHE_ED_PASS2) != 0; 135 acp->ac_memwidth = 136 (REGVAL(COMANCHE_GCR) & COMANCHE_GCR_WIDEMEM) != 0 ? 128 : 64; 137 acp->ac_epic_pass2 = 138 (REGVAL(EPIC_DCSR) & EPIC_DCSR_PASS2) != 0; 139 140 acp->ac_haxr1 = REGVAL(EPIC_HAXR1); 141 acp->ac_haxr2 = REGVAL(EPIC_HAXR2); 142 143 if (!acp->ac_initted) { 144 /* don't do these twice since they set up extents */ 145 apecs_bus_io_init(&acp->ac_iot, acp); 146 apecs_bus_mem_init(&acp->ac_memt, acp); 147 148 /* 149 * We have two I/O windows and 3 MEM windows. 150 */ 151 alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_IO] = 2; 152 alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_MEM] = 3; 153 alpha_bus_get_window = apecs_bus_get_window; 154 } 155 acp->ac_mallocsafe = mallocsafe; 156 157 apecs_pci_init(&acp->ac_pc, acp); 158 alpha_pci_chipset = &acp->ac_pc; 159 160 acp->ac_initted = 1; 161 } 162 163 static void 164 apecsattach(device_t parent, device_t self, void *aux) 165 { 166 struct apecs_config *acp; 167 struct pcibus_attach_args pba; 168 169 /* note that we've attached the chipset; can't have 2 APECSes. */ 170 apecsfound = 1; 171 172 /* 173 * set up the chipset's info; done once at console init time 174 * (maybe), but doesn't hurt to do twice. 175 */ 176 acp = &apecs_configuration; 177 apecs_init(acp, 1); 178 179 apecs_dma_init(acp); 180 181 printf(": DECchip %s Core Logic chipset\n", 182 acp->ac_memwidth == 128 ? "21072" : "21071"); 183 printf("%s: DC21071-CA pass %d, %d-bit memory bus\n", 184 self->dv_xname, acp->ac_comanche_pass2 ? 2 : 1, acp->ac_memwidth); 185 printf("%s: DC21071-DA pass %d\n", self->dv_xname, 186 acp->ac_epic_pass2 ? 2 : 1); 187 /* XXX print bcache size */ 188 189 if (!acp->ac_epic_pass2) 190 printf("WARNING: 21071-DA NOT PASS2... NO BETS...\n"); 191 192 switch (cputype) { 193 #ifdef DEC_2100_A50 194 case ST_DEC_2100_A50: 195 pci_2100_a50_pickintr(acp); 196 break; 197 #endif 198 199 #ifdef DEC_EB64PLUS 200 case ST_EB64P: 201 pci_eb64plus_pickintr(acp); 202 break; 203 #endif 204 205 #ifdef DEC_1000A 206 case ST_DEC_1000A: 207 pci_1000a_pickintr(acp, &acp->ac_iot, &acp->ac_memt, 208 &acp->ac_pc); 209 break; 210 #endif 211 212 #ifdef DEC_1000 213 case ST_DEC_1000: 214 pci_1000_pickintr(acp, &acp->ac_iot, &acp->ac_memt, 215 &acp->ac_pc); 216 break; 217 #endif 218 219 default: 220 panic("apecsattach: shouldn't be here, really..."); 221 } 222 223 pba.pba_iot = &acp->ac_iot; 224 pba.pba_memt = &acp->ac_memt; 225 pba.pba_dmat = 226 alphabus_dma_get_tag(&acp->ac_dmat_direct, ALPHA_BUS_PCI); 227 pba.pba_dmat64 = NULL; 228 pba.pba_pc = &acp->ac_pc; 229 pba.pba_bus = 0; 230 pba.pba_bridgetag = NULL; 231 pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY | 232 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY; 233 config_found_ia(self, "pcibus", &pba, pcibusprint); 234 } 235 236 static int 237 apecs_bus_get_window(int type, int window, struct alpha_bus_space_translation *abst) 238 { 239 struct apecs_config *acp = &apecs_configuration; 240 bus_space_tag_t st; 241 242 switch (type) { 243 case ALPHA_BUS_TYPE_PCI_IO: 244 st = &acp->ac_iot; 245 break; 246 247 case ALPHA_BUS_TYPE_PCI_MEM: 248 st = &acp->ac_memt; 249 break; 250 251 default: 252 panic("apecs_bus_get_window"); 253 } 254 255 return (alpha_bus_space_get_window(st, window, abst)); 256 } 257
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