Annotation of sys/arch/alpha/pci/apecs.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: apecs.c,v 1.20 2006/12/14 17:36:12 kettenis Exp $ */
! 2: /* $NetBSD: apecs.c,v 1.16 1996/12/05 01:39:34 cgd Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 2000 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: /*
! 41: * Copyright (c) 1995, 1996 Carnegie-Mellon University.
! 42: * All rights reserved.
! 43: *
! 44: * Author: Chris G. Demetriou
! 45: *
! 46: * Permission to use, copy, modify and distribute this software and
! 47: * its documentation is hereby granted, provided that both the copyright
! 48: * notice and this permission notice appear in all copies of the
! 49: * software, derivative works or modified versions, and any portions
! 50: * thereof, and that both notices appear in supporting documentation.
! 51: *
! 52: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
! 53: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
! 54: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
! 55: *
! 56: * Carnegie Mellon requests users of this software to return to
! 57: *
! 58: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
! 59: * School of Computer Science
! 60: * Carnegie Mellon University
! 61: * Pittsburgh PA 15213-3890
! 62: *
! 63: * any improvements or extensions that they make and grant Carnegie the
! 64: * rights to redistribute these changes.
! 65: */
! 66:
! 67: #include <sys/param.h>
! 68: #include <sys/systm.h>
! 69: #include <sys/kernel.h>
! 70: #include <sys/malloc.h>
! 71: #include <sys/device.h>
! 72: #include <uvm/uvm_extern.h>
! 73:
! 74: #include <machine/autoconf.h>
! 75: #include <machine/rpb.h>
! 76:
! 77: #include <dev/isa/isareg.h>
! 78: #include <dev/isa/isavar.h>
! 79:
! 80: #include <dev/pci/pcireg.h>
! 81: #include <dev/pci/pcivar.h>
! 82: #include <alpha/pci/apecsreg.h>
! 83: #include <alpha/pci/apecsvar.h>
! 84: #ifdef DEC_2100_A50
! 85: #include <alpha/pci/pci_2100_a50.h>
! 86: #endif
! 87: #ifdef DEC_EB64PLUS
! 88: #include <alpha/pci/pci_eb64plus.h>
! 89: #endif
! 90: #ifdef DEC_1000A
! 91: #include <alpha/pci/pci_1000a.h>
! 92: #endif
! 93: #ifdef DEC_1000
! 94: #include <alpha/pci/pci_1000.h>
! 95: #endif
! 96:
! 97: int apecsmatch(struct device *, void *, void *);
! 98: void apecsattach(struct device *, struct device *, void *);
! 99:
! 100: struct cfattach apecs_ca = {
! 101: sizeof(struct device), apecsmatch, apecsattach,
! 102: };
! 103:
! 104: struct cfdriver apecs_cd = {
! 105: NULL, "apecs", DV_DULL,
! 106: };
! 107:
! 108: int apecsprint(void *, const char *pnp);
! 109:
! 110: /* There can be only one. */
! 111: int apecsfound;
! 112: struct apecs_config apecs_configuration;
! 113:
! 114: int
! 115: apecsmatch(parent, match, aux)
! 116: struct device *parent;
! 117: void *match;
! 118: void *aux;
! 119: {
! 120: struct mainbus_attach_args *ma = aux;
! 121:
! 122: /* Make sure that we're looking for an APECS. */
! 123: if (strcmp(ma->ma_name, apecs_cd.cd_name) != 0)
! 124: return (0);
! 125:
! 126: if (apecsfound)
! 127: return (0);
! 128:
! 129: return (1);
! 130: }
! 131:
! 132: /*
! 133: * Set up the chipset's function pointers.
! 134: */
! 135: void
! 136: apecs_init(acp, mallocsafe)
! 137: struct apecs_config *acp;
! 138: int mallocsafe;
! 139: {
! 140: acp->ac_comanche_pass2 =
! 141: (REGVAL(COMANCHE_ED) & COMANCHE_ED_PASS2) != 0;
! 142: acp->ac_memwidth =
! 143: (REGVAL(COMANCHE_GCR) & COMANCHE_GCR_WIDEMEM) != 0 ? 128 : 64;
! 144: acp->ac_epic_pass2 =
! 145: (REGVAL(EPIC_DCSR) & EPIC_DCSR_PASS2) != 0;
! 146:
! 147: acp->ac_haxr1 = REGVAL(EPIC_HAXR1);
! 148: acp->ac_haxr2 = REGVAL(EPIC_HAXR2);
! 149:
! 150: if (!acp->ac_initted) {
! 151: /* don't do these twice since they set up extents */
! 152: apecs_bus_io_init(&acp->ac_iot, acp);
! 153: apecs_bus_mem_init(&acp->ac_memt, acp);
! 154:
! 155: #if 0
! 156: /*
! 157: * We have two I/O windows and 3 MEM windows.
! 158: */
! 159: alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_IO] = 2;
! 160: alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_MEM] = 3;
! 161: alpha_bus_get_window = apecs_bus_get_window;
! 162: #endif
! 163: }
! 164: acp->ac_mallocsafe = mallocsafe;
! 165:
! 166: apecs_pci_init(&acp->ac_pc, acp);
! 167: alpha_pci_chipset = &acp->ac_pc;
! 168: alpha_pci_chipset->pc_name = "apecs";
! 169: alpha_pci_chipset->pc_mem = APECS_PCI_SPARSE;
! 170: alpha_pci_chipset->pc_dense = APECS_PCI_DENSE;
! 171: alpha_pci_chipset->pc_ports = APECS_PCI_SIO;
! 172: alpha_pci_chipset->pc_bwx = 0;
! 173: alpha_pci_chipset->pc_hae_mask = EPIC_HAXR1_EADDR;
! 174:
! 175: acp->ac_initted = 1;
! 176: }
! 177:
! 178: void
! 179: apecsattach(parent, self, aux)
! 180: struct device *parent, *self;
! 181: void *aux;
! 182: {
! 183: struct apecs_config *acp;
! 184: struct pcibus_attach_args pba;
! 185:
! 186: /* note that we've attached the chipset; can't have 2 APECSes. */
! 187: apecsfound = 1;
! 188:
! 189: /*
! 190: * set up the chipset's info; done once at console init time
! 191: * (maybe), but doesn't hurt to do twice.
! 192: */
! 193: acp = &apecs_configuration;
! 194: apecs_init(acp, 1);
! 195:
! 196: apecs_dma_init(acp);
! 197:
! 198: printf(": DECchip %s Core Logic chipset\n",
! 199: acp->ac_memwidth == 128 ? "21072" : "21071");
! 200: printf("%s: DC21071-CA pass %d, %d-bit memory bus\n",
! 201: self->dv_xname, acp->ac_comanche_pass2 ? 2 : 1, acp->ac_memwidth);
! 202: printf("%s: DC21071-DA pass %d\n", self->dv_xname,
! 203: acp->ac_epic_pass2 ? 2 : 1);
! 204: /* XXX print bcache size */
! 205:
! 206: if (!acp->ac_epic_pass2)
! 207: printf("WARNING: 21071-DA NOT PASS2... NO BETS...\n");
! 208:
! 209: switch (cputype) {
! 210: #ifdef DEC_2100_A50
! 211: case ST_DEC_2100_A50:
! 212: pci_2100_a50_pickintr(acp);
! 213: break;
! 214: #endif
! 215:
! 216: #ifdef DEC_EB64PLUS
! 217: case ST_EB64P:
! 218: pci_eb64plus_pickintr(acp);
! 219: break;
! 220: #endif
! 221:
! 222: #ifdef DEC_1000A
! 223: case ST_DEC_1000A:
! 224: pci_1000a_pickintr(acp, &acp->ac_iot, &acp->ac_memt,
! 225: &acp->ac_pc);
! 226: break;
! 227: #endif
! 228:
! 229: #ifdef DEC_1000
! 230: case ST_DEC_1000:
! 231: pci_1000_pickintr(acp, &acp->ac_iot, &acp->ac_memt,
! 232: &acp->ac_pc);
! 233: break;
! 234: #endif
! 235:
! 236: default:
! 237: panic("apecsattach: shouldn't be here, really...");
! 238: }
! 239:
! 240: pba.pba_busname = "pci";
! 241: pba.pba_iot = &acp->ac_iot;
! 242: pba.pba_memt = &acp->ac_memt;
! 243: pba.pba_dmat =
! 244: alphabus_dma_get_tag(&acp->ac_dmat_direct, ALPHA_BUS_PCI);
! 245: pba.pba_pc = &acp->ac_pc;
! 246: pba.pba_domain = pci_ndomains++;
! 247: pba.pba_bus = 0;
! 248: pba.pba_bridgetag = NULL;
! 249: #ifdef notyet
! 250: pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
! 251: PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY;
! 252: #endif
! 253: config_found(self, &pba, apecsprint);
! 254: }
! 255:
! 256: int
! 257: apecsprint(aux, pnp)
! 258: void *aux;
! 259: const char *pnp;
! 260: {
! 261: register struct pcibus_attach_args *pba = aux;
! 262:
! 263: /* only PCIs can attach to APECSes; easy. */
! 264: if (pnp)
! 265: printf("%s at %s", pba->pba_busname, pnp);
! 266: printf(" bus %d", pba->pba_bus);
! 267: return (UNCONF);
! 268: }
! 269:
! 270: #if 0
! 271: int
! 272: apecs_bus_get_window(type, window, abst)
! 273: int type, window;
! 274: struct alpha_bus_space_translation *abst;
! 275: {
! 276: struct apecs_config *acp = &apecs_configuration;
! 277: bus_space_tag_t st;
! 278:
! 279: switch (type) {
! 280: case ALPHA_BUS_TYPE_PCI_IO:
! 281: st = &acp->ac_iot;
! 282: break;
! 283:
! 284: case ALPHA_BUS_TYPE_PCI_MEM:
! 285: st = &acp->ac_memt;
! 286: break;
! 287:
! 288: default:
! 289: panic("apecs_bus_get_window");
! 290: }
! 291:
! 292: return (alpha_bus_space_get_window(st, window, abst));
! 293: }
! 294: #endif
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