Annotation of sys/arch/alpha/pci/pci_2100_a50.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: pci_2100_a50.c,v 1.20 2006/06/15 20:08:29 brad Exp $ */
! 2: /* $NetBSD: pci_2100_a50.c,v 1.12 1996/11/13 21:13:29 cgd Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1995, 1996 Carnegie-Mellon University.
! 6: * All rights reserved.
! 7: *
! 8: * Author: Chris G. Demetriou
! 9: *
! 10: * Permission to use, copy, modify and distribute this software and
! 11: * its documentation is hereby granted, provided that both the copyright
! 12: * notice and this permission notice appear in all copies of the
! 13: * software, derivative works or modified versions, and any portions
! 14: * thereof, and that both notices appear in supporting documentation.
! 15: *
! 16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
! 17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
! 18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
! 19: *
! 20: * Carnegie Mellon requests users of this software to return to
! 21: *
! 22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
! 23: * School of Computer Science
! 24: * Carnegie Mellon University
! 25: * Pittsburgh PA 15213-3890
! 26: *
! 27: * any improvements or extensions that they make and grant Carnegie the
! 28: * rights to redistribute these changes.
! 29: */
! 30:
! 31: #include <sys/types.h>
! 32: #include <sys/param.h>
! 33: #include <sys/time.h>
! 34: #include <sys/systm.h>
! 35: #include <sys/errno.h>
! 36: #include <sys/device.h>
! 37: #include <uvm/uvm_extern.h>
! 38:
! 39: #include <machine/autoconf.h>
! 40: #include <machine/bus.h>
! 41: #include <machine/intr.h>
! 42:
! 43: #include <dev/isa/isavar.h>
! 44: #include <dev/pci/pcireg.h>
! 45: #include <dev/pci/pcivar.h>
! 46:
! 47: #include <alpha/pci/apecsvar.h>
! 48:
! 49: #include <alpha/pci/pci_2100_a50.h>
! 50: #include <alpha/pci/siovar.h>
! 51: #include <alpha/pci/sioreg.h>
! 52:
! 53: #include "sio.h"
! 54:
! 55: int dec_2100_a50_intr_map(void *, pcitag_t, int, int,
! 56: pci_intr_handle_t *);
! 57: const char *dec_2100_a50_intr_string(void *, pci_intr_handle_t);
! 58: int dec_2100_a50_intr_line(void *, pci_intr_handle_t);
! 59: void *dec_2100_a50_intr_establish(void *, pci_intr_handle_t,
! 60: int, int (*func)(void *), void *, char *);
! 61: void dec_2100_a50_intr_disestablish(void *, void *);
! 62:
! 63: #define APECS_SIO_DEVICE 7 /* XXX */
! 64:
! 65: void
! 66: pci_2100_a50_pickintr(acp)
! 67: struct apecs_config *acp;
! 68: {
! 69: bus_space_tag_t iot = &acp->ac_iot;
! 70: pci_chipset_tag_t pc = &acp->ac_pc;
! 71: pcireg_t sioclass;
! 72: int sioII;
! 73:
! 74: /* XXX MAGIC NUMBER */
! 75: sioclass = pci_conf_read(pc, pci_make_tag(pc, 0, 7, 0), PCI_CLASS_REG);
! 76: sioII = (sioclass & 0xff) >= 3;
! 77:
! 78: if (!sioII)
! 79: printf("WARNING: SIO NOT SIO II... NO BETS...\n");
! 80:
! 81: pc->pc_intr_v = acp;
! 82: pc->pc_intr_map = dec_2100_a50_intr_map;
! 83: pc->pc_intr_string = dec_2100_a50_intr_string;
! 84: pc->pc_intr_line = dec_2100_a50_intr_line;
! 85: pc->pc_intr_establish = dec_2100_a50_intr_establish;
! 86: pc->pc_intr_disestablish = dec_2100_a50_intr_disestablish;
! 87:
! 88: /* Not supported on 2100 A50. */
! 89: pc->pc_pciide_compat_intr_establish = NULL;
! 90: pc->pc_pciide_compat_intr_disestablish = NULL;
! 91:
! 92: #if NSIO
! 93: sio_intr_setup(pc, iot);
! 94: #else
! 95: panic("pci_2100_a50_pickintr: no I/O interrupt handler (no sio)");
! 96: #endif
! 97: }
! 98:
! 99: int
! 100: dec_2100_a50_intr_map(acv, bustag, buspin, line, ihp)
! 101: void *acv;
! 102: pcitag_t bustag;
! 103: int buspin, line;
! 104: pci_intr_handle_t *ihp;
! 105: {
! 106: struct apecs_config *acp = acv;
! 107: pci_chipset_tag_t pc = &acp->ac_pc;
! 108: int device, pirq;
! 109: pcireg_t pirqreg;
! 110: u_int8_t pirqline;
! 111:
! 112: if (buspin == 0) {
! 113: /* No IRQ used. */
! 114: return 1;
! 115: }
! 116: if (buspin > 4) {
! 117: printf("dec_2100_a50_intr_map: bad interrupt pin %d\n",
! 118: buspin);
! 119: return 1;
! 120: }
! 121:
! 122: pci_decompose_tag(pc, bustag, NULL, &device, NULL);
! 123:
! 124: switch (device) {
! 125: case 6: /* NCR SCSI */
! 126: pirq = 3;
! 127: break;
! 128:
! 129: case 11: /* slot 1 */
! 130: case 14: /* slot 3 */
! 131: switch (buspin) {
! 132: case PCI_INTERRUPT_PIN_A:
! 133: case PCI_INTERRUPT_PIN_D:
! 134: pirq = 0;
! 135: break;
! 136: case PCI_INTERRUPT_PIN_B:
! 137: pirq = 2;
! 138: break;
! 139: case PCI_INTERRUPT_PIN_C:
! 140: pirq = 1;
! 141: break;
! 142: #ifdef DIAGNOSTIC
! 143: default: /* XXX gcc -Wuninitialized */
! 144: panic("dec_2100_a50_intr_map bogus PCI pin %d",
! 145: buspin);
! 146: #endif
! 147: };
! 148: break;
! 149:
! 150: case 12: /* slot 2 */
! 151: switch (buspin) {
! 152: case PCI_INTERRUPT_PIN_A:
! 153: case PCI_INTERRUPT_PIN_D:
! 154: pirq = 1;
! 155: break;
! 156: case PCI_INTERRUPT_PIN_B:
! 157: pirq = 0;
! 158: break;
! 159: case PCI_INTERRUPT_PIN_C:
! 160: pirq = 2;
! 161: break;
! 162: #ifdef DIAGNOSTIC
! 163: default: /* XXX gcc -Wuninitialized */
! 164: panic("dec_2100_a50_intr_map bogus PCI pin %d",
! 165: buspin);
! 166: #endif
! 167: };
! 168: break;
! 169:
! 170: case 13: /* slot 3 */
! 171: switch (buspin) {
! 172: case PCI_INTERRUPT_PIN_A:
! 173: case PCI_INTERRUPT_PIN_D:
! 174: pirq = 2;
! 175: break;
! 176: case PCI_INTERRUPT_PIN_B:
! 177: pirq = 1;
! 178: break;
! 179: case PCI_INTERRUPT_PIN_C:
! 180: pirq = 0;
! 181: break;
! 182: #ifdef DIAGNOSTIC
! 183: default: /* XXX gcc -Wuninitialized */
! 184: panic("dec_2100_a50_intr_map bogus PCI pin %d",
! 185: buspin);
! 186: #endif
! 187: };
! 188: break;
! 189:
! 190: default:
! 191: printf("dec_2100_a50_intr_map: weird device number %d\n",
! 192: device);
! 193: return 1;
! 194: }
! 195:
! 196: pirqreg = pci_conf_read(pc, pci_make_tag(pc, 0, APECS_SIO_DEVICE, 0),
! 197: SIO_PCIREG_PIRQ_RTCTRL);
! 198: #if 0
! 199: printf("pci_2100_a50_map_int: device %d pin %c: pirq %d, reg = %x\n",
! 200: device, '@' + buspin, pirq, pirqreg);
! 201: #endif
! 202: pirqline = (pirqreg >> (pirq * 8)) & 0xff;
! 203: if ((pirqline & 0x80) != 0)
! 204: return 1;
! 205: pirqline &= 0xf;
! 206:
! 207: #if 0
! 208: printf("pci_2100_a50_map_int: device %d pin %c: mapped to line %d\n",
! 209: device, '@' + buspin, pirqline);
! 210: #endif
! 211:
! 212: *ihp = pirqline;
! 213: return (0);
! 214: }
! 215:
! 216: const char *
! 217: dec_2100_a50_intr_string(acv, ih)
! 218: void *acv;
! 219: pci_intr_handle_t ih;
! 220: {
! 221: return sio_intr_string(NULL /*XXX*/, ih);
! 222: }
! 223:
! 224: int
! 225: dec_2100_a50_intr_line(acv, ih)
! 226: void *acv;
! 227: pci_intr_handle_t ih;
! 228: {
! 229: return sio_intr_line(NULL /*XXX*/, ih);
! 230: }
! 231:
! 232: void *
! 233: dec_2100_a50_intr_establish(acv, ih, level, func, arg, name)
! 234: void *acv, *arg;
! 235: pci_intr_handle_t ih;
! 236: int level;
! 237: int (*func)(void *);
! 238: char *name;
! 239: {
! 240: return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func,
! 241: arg, name);
! 242: }
! 243:
! 244: void
! 245: dec_2100_a50_intr_disestablish(acv, cookie)
! 246: void *acv, *cookie;
! 247: {
! 248: sio_intr_disestablish(NULL /*XXX*/, cookie);
! 249: }
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