Annotation of sys/arch/alpha/pci/irongate.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: irongate.c,v 1.9 2006/12/14 17:36:12 kettenis Exp $ */
! 2: /* $NetBSD: irongate.c,v 1.3 2000/11/29 06:29:10 thorpej 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: #include <sys/param.h>
! 41: #include <sys/systm.h>
! 42: #include <sys/device.h>
! 43: #include <sys/malloc.h>
! 44:
! 45: #include <machine/autoconf.h>
! 46: #include <machine/rpb.h>
! 47:
! 48: #include <dev/isa/isareg.h>
! 49: #include <dev/isa/isavar.h>
! 50: #include <dev/pci/pcireg.h>
! 51: #include <dev/pci/pcivar.h>
! 52:
! 53: #include <alpha/pci/irongatereg.h>
! 54: #include <alpha/pci/irongatevar.h>
! 55:
! 56: #ifdef API_UP1000
! 57: #include <alpha/pci/pci_up1000.h>
! 58: #endif
! 59:
! 60: int irongate_match(struct device *, void *, void *);
! 61: void irongate_attach(struct device *, struct device *, void *);
! 62:
! 63: struct cfattach irongate_ca = {
! 64: sizeof(struct device), irongate_match, irongate_attach,
! 65: };
! 66:
! 67: int irongate_print(void *, const char *pnp);
! 68:
! 69: struct cfdriver irongate_cd = {
! 70: NULL, "irongate", DV_DULL,
! 71: };
! 72:
! 73: /* There can be only one. */
! 74: struct irongate_config irongate_configuration;
! 75: int irongate_found;
! 76:
! 77: #if 0
! 78: int irongate_bus_get_window(int, int,
! 79: struct alpha_bus_space_translation *);
! 80: #endif
! 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: alpha_pci_chipset->pc_name = "irongate";
! 100: alpha_pci_chipset->pc_mem = IRONGATE_MEM_BASE;
! 101: alpha_pci_chipset->pc_mem = IRONGATE_MEM_BASE;
! 102: alpha_pci_chipset->pc_bwx = 1;
! 103:
! 104: tag = pci_make_tag(&icp->ic_pc, 0, IRONGATE_PCIHOST_DEV, 0);
! 105:
! 106: /* Read the revision. */
! 107: reg = irongate_conf_read0(icp, tag, PCI_CLASS_REG);
! 108: icp->ic_rev = PCI_REVISION(reg);
! 109:
! 110: if (icp->ic_initted == 0) {
! 111: /* Don't do these twice, since they set up extents. */
! 112: irongate_bus_io_init(&icp->ic_iot, icp);
! 113: irongate_bus_mem_init(&icp->ic_memt, icp);
! 114:
! 115: #if 0
! 116: /* Only one each PCI I/O and MEM window. */
! 117: alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_IO] = 1;
! 118: alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_MEM] = 1;
! 119:
! 120: alpha_bus_get_window = irongate_bus_get_window;
! 121: #endif
! 122: }
! 123:
! 124: icp->ic_initted = 1;
! 125: }
! 126:
! 127: int
! 128: irongate_match(struct device *parent, void *match, void *aux)
! 129: {
! 130: struct mainbus_attach_args *ma = aux;
! 131:
! 132: /* Make sure we're looking for an Irongate. */
! 133: if (strcmp(ma->ma_name, irongate_cd.cd_name) != 0)
! 134: return (0);
! 135:
! 136: if (irongate_found)
! 137: return (0);
! 138:
! 139: return (1);
! 140: }
! 141:
! 142: void
! 143: irongate_attach(struct device *parent, struct device *self, void *aux)
! 144: {
! 145: struct irongate_config *icp;
! 146: struct pcibus_attach_args pba;
! 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 = &irongate_configuration;
! 157: irongate_init(icp, 1);
! 158:
! 159: printf(": 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: pba.pba_busname = "pci";
! 181: pba.pba_iot = &icp->ic_iot;
! 182: pba.pba_memt = &icp->ic_memt;
! 183: pba.pba_dmat =
! 184: alphabus_dma_get_tag(&icp->ic_dmat_pci, ALPHA_BUS_PCI);
! 185: pba.pba_pc = &icp->ic_pc;
! 186: pba.pba_domain = pci_ndomains++;
! 187: pba.pba_bus = 0;
! 188: pba.pba_bridgetag = NULL;
! 189: #ifdef notyet
! 190: pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
! 191: PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY;
! 192: #endif
! 193: (void) config_found(self, &pba, irongate_print);
! 194: }
! 195:
! 196: int
! 197: irongate_print(void *aux, const char *pnp)
! 198: {
! 199: struct pcibus_attach_args *pba = aux;
! 200:
! 201: /* Only PCIs can attach to Irongates; easy. */
! 202: if (pnp != NULL)
! 203: printf("%s at %s", pba->pba_busname, pnp);
! 204: printf(" bus %d", pba->pba_bus);
! 205: return (UNCONF);
! 206: }
! 207:
! 208: #if 0
! 209: int
! 210: irongate_bus_get_window(int type, int window,
! 211: struct alpha_bus_space_translation *abst)
! 212: {
! 213: struct irongate_config *icp = &irongate_configuration;
! 214: bus_space_tag_t st;
! 215: int error;
! 216:
! 217: switch (type) {
! 218: case ALPHA_BUS_TYPE_PCI_IO:
! 219: st = &icp->ic_iot;
! 220: break;
! 221:
! 222: case ALPHA_BUS_TYPE_PCI_MEM:
! 223: st = &icp->ic_memt;
! 224: break;
! 225:
! 226: default:
! 227: panic("irongate_bus_get_window");
! 228: }
! 229:
! 230: error = alpha_bus_space_get_window(st, window, abst);
! 231: if (error)
! 232: return (error);
! 233:
! 234: abst->abst_sys_start = IRONGATE_PHYSADDR(abst->abst_sys_start);
! 235: abst->abst_sys_end = IRONGATE_PHYSADDR(abst->abst_sys_end);
! 236:
! 237: return (0);
! 238: }
! 239: #endif
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