Annotation of sys/arch/alpha/pci/pci_eb64plus.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: pci_eb64plus.c,v 1.9 2006/06/15 20:08:29 brad Exp $ */
! 2: /* $NetBSD: pci_eb64plus.c,v 1.10 2001/07/27 00:25:20 thorpej Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1998 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 of the Numerical Aerospace Simulation Facility,
! 10: * NASA Ames Research Center.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. All advertising materials mentioning features or use of this software
! 21: * must display the following acknowledgement:
! 22: * This product includes software developed by the NetBSD
! 23: * Foundation, Inc. and its contributors.
! 24: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 25: * contributors may be used to endorse or promote products derived
! 26: * from this software without specific prior written permission.
! 27: *
! 28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 38: * POSSIBILITY OF SUCH DAMAGE.
! 39: */
! 40:
! 41: /*
! 42: * Copyright (c) 1995, 1996 Carnegie-Mellon University.
! 43: * All rights reserved.
! 44: *
! 45: * Author: Chris G. Demetriou
! 46: *
! 47: * Permission to use, copy, modify and distribute this software and
! 48: * its documentation is hereby granted, provided that both the copyright
! 49: * notice and this permission notice appear in all copies of the
! 50: * software, derivative works or modified versions, and any portions
! 51: * thereof, and that both notices appear in supporting documentation.
! 52: *
! 53: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
! 54: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
! 55: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
! 56: *
! 57: * Carnegie Mellon requests users of this software to return to
! 58: *
! 59: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
! 60: * School of Computer Science
! 61: * Carnegie Mellon University
! 62: * Pittsburgh PA 15213-3890
! 63: *
! 64: * any improvements or extensions that they make and grant Carnegie the
! 65: * rights to redistribute these changes.
! 66: */
! 67:
! 68: #include <sys/types.h>
! 69: #include <sys/param.h>
! 70: #include <sys/time.h>
! 71: #include <sys/systm.h>
! 72: #include <sys/errno.h>
! 73: #include <sys/malloc.h>
! 74: #include <sys/device.h>
! 75: #include <sys/syslog.h>
! 76:
! 77: #include <uvm/uvm_extern.h>
! 78:
! 79: #include <machine/autoconf.h>
! 80:
! 81: #include <dev/pci/pcireg.h>
! 82: #include <dev/pci/pcivar.h>
! 83:
! 84: #include <alpha/pci/apecsreg.h>
! 85: #include <alpha/pci/apecsvar.h>
! 86:
! 87: #include <alpha/pci/pci_eb64plus.h>
! 88:
! 89: #include "sio.h"
! 90: #if NSIO
! 91: #include <alpha/pci/siovar.h>
! 92: #endif
! 93:
! 94: int dec_eb64plus_intr_map(void *, pcitag_t, int, int,
! 95: pci_intr_handle_t *);
! 96: const char *dec_eb64plus_intr_string(void *, pci_intr_handle_t);
! 97: void *dec_eb64plus_intr_establish(void *, pci_intr_handle_t,
! 98: int, int (*func)(void *), void *, char *);
! 99: void dec_eb64plus_intr_disestablish(void *, void *);
! 100:
! 101: #define EB64PLUS_MAX_IRQ 32
! 102: #define PCI_STRAY_MAX 5
! 103:
! 104: struct alpha_shared_intr *eb64plus_pci_intr;
! 105:
! 106: bus_space_tag_t eb64plus_intrgate_iot;
! 107: bus_space_handle_t eb64plus_intrgate_ioh;
! 108:
! 109: void eb64plus_iointr(void *arg, unsigned long vec);
! 110: extern void eb64plus_intr_enable(int irq); /* pci_eb64plus_intr.S */
! 111: extern void eb64plus_intr_disable(int irq); /* pci_eb64plus_intr.S */
! 112:
! 113: void
! 114: pci_eb64plus_pickintr(acp)
! 115: struct apecs_config *acp;
! 116: {
! 117: bus_space_tag_t iot = &acp->ac_iot;
! 118: pci_chipset_tag_t pc = &acp->ac_pc;
! 119: int i;
! 120:
! 121: pc->pc_intr_v = acp;
! 122: pc->pc_intr_map = dec_eb64plus_intr_map;
! 123: pc->pc_intr_string = dec_eb64plus_intr_string;
! 124: pc->pc_intr_establish = dec_eb64plus_intr_establish;
! 125: pc->pc_intr_disestablish = dec_eb64plus_intr_disestablish;
! 126:
! 127: /* Not supported on the EB64+. */
! 128: pc->pc_pciide_compat_intr_establish = NULL;
! 129:
! 130: eb64plus_intrgate_iot = iot;
! 131: if (bus_space_map(eb64plus_intrgate_iot, 0x804, 3, 0,
! 132: &eb64plus_intrgate_ioh) != 0)
! 133: panic("pci_eb64plus_pickintr: couldn't map interrupt PLD");
! 134: for (i = 0; i < EB64PLUS_MAX_IRQ; i++)
! 135: eb64plus_intr_disable(i);
! 136:
! 137: eb64plus_pci_intr = alpha_shared_intr_alloc(EB64PLUS_MAX_IRQ);
! 138: for (i = 0; i < EB64PLUS_MAX_IRQ; i++) {
! 139: alpha_shared_intr_set_maxstrays(eb64plus_pci_intr, i,
! 140: PCI_STRAY_MAX);
! 141: }
! 142:
! 143: #if NSIO
! 144: sio_intr_setup(pc, iot);
! 145: #endif
! 146: }
! 147:
! 148: int
! 149: dec_eb64plus_intr_map(acv, bustag, buspin, line, ihp)
! 150: void *acv;
! 151: pcitag_t bustag;
! 152: int buspin, line;
! 153: pci_intr_handle_t *ihp;
! 154: {
! 155: struct apecs_config *acp = acv;
! 156: pci_chipset_tag_t pc = &acp->ac_pc;
! 157: int bus, device, function;
! 158:
! 159: if (buspin == 0) {
! 160: /* No IRQ used. */
! 161: return 1;
! 162: }
! 163: if (buspin > 4) {
! 164: printf("dec_eb64plus_intr_map: bad interrupt pin %d\n", buspin);
! 165: return 1;
! 166: }
! 167:
! 168: pci_decompose_tag(pc, bustag, &bus, &device, &function);
! 169:
! 170: /*
! 171: * The console places the interrupt mapping in the "line" value.
! 172: * A value of (char)-1 indicates there is no mapping.
! 173: */
! 174: if (line == 0xff) {
! 175: printf("dec_eb64plus_intr_map: no mapping for %d/%d/%d\n",
! 176: bus, device, function);
! 177: return (1);
! 178: }
! 179:
! 180: if (line >= EB64PLUS_MAX_IRQ)
! 181: panic("dec_eb64plus_intr_map: eb64+ irq too large (%d)",
! 182: line);
! 183:
! 184: *ihp = line;
! 185: return (0);
! 186: }
! 187:
! 188: const char *
! 189: dec_eb64plus_intr_string(acv, ih)
! 190: void *acv;
! 191: pci_intr_handle_t ih;
! 192: {
! 193: static char irqstr[15]; /* 11 + 2 + NULL + sanity */
! 194:
! 195: if (ih > EB64PLUS_MAX_IRQ)
! 196: panic("dec_eb64plus_intr_string: bogus eb64+ IRQ 0x%lx", ih);
! 197: snprintf(irqstr, sizeof irqstr, "eb64+ irq %ld", ih);
! 198: return (irqstr);
! 199: }
! 200:
! 201: void *
! 202: dec_eb64plus_intr_establish(acv, ih, level, func, arg, name)
! 203: void *acv;
! 204: pci_intr_handle_t ih;
! 205: int level;
! 206: int (*func)(void *);
! 207: void *arg;
! 208: char *name;
! 209: {
! 210: void *cookie;
! 211:
! 212: if (ih > EB64PLUS_MAX_IRQ)
! 213: panic("dec_eb64plus_intr_establish: bogus eb64+ IRQ 0x%lx",
! 214: ih);
! 215:
! 216: cookie = alpha_shared_intr_establish(eb64plus_pci_intr, ih, IST_LEVEL,
! 217: level, func, arg, name);
! 218:
! 219: if (cookie != NULL &&
! 220: alpha_shared_intr_firstactive(eb64plus_pci_intr, ih)) {
! 221: scb_set(0x900 + SCB_IDXTOVEC(ih), eb64plus_iointr, NULL);
! 222: eb64plus_intr_enable(ih);
! 223: }
! 224: return (cookie);
! 225: }
! 226:
! 227: void
! 228: dec_eb64plus_intr_disestablish(acv, cookie)
! 229: void *acv, *cookie;
! 230: {
! 231: struct alpha_shared_intrhand *ih = cookie;
! 232: unsigned int irq = ih->ih_num;
! 233: int s;
! 234:
! 235: s = splhigh();
! 236:
! 237: alpha_shared_intr_disestablish(eb64plus_pci_intr, cookie,
! 238: "eb64+ irq");
! 239: if (alpha_shared_intr_isactive(eb64plus_pci_intr, irq) == 0) {
! 240: eb64plus_intr_disable(irq);
! 241: alpha_shared_intr_set_dfltsharetype(eb64plus_pci_intr, irq,
! 242: IST_NONE);
! 243: scb_free(0x900 + SCB_IDXTOVEC(irq));
! 244: }
! 245:
! 246: splx(s);
! 247: }
! 248:
! 249: void
! 250: eb64plus_iointr(arg, vec)
! 251: void *arg;
! 252: unsigned long vec;
! 253: {
! 254: int irq;
! 255:
! 256: irq = SCB_VECTOIDX(vec - 0x900);
! 257:
! 258: if (!alpha_shared_intr_dispatch(eb64plus_pci_intr, irq)) {
! 259: alpha_shared_intr_stray(eb64plus_pci_intr, irq,
! 260: "eb64+ irq");
! 261: if (ALPHA_SHARED_INTR_DISABLE(eb64plus_pci_intr, irq))
! 262: eb64plus_intr_disable(irq);
! 263: } else
! 264: alpha_shared_intr_reset_strays(eb64plus_pci_intr, irq);
! 265: }
! 266:
! 267: #if 0 /* THIS DOES NOT WORK! see pci_eb64plus_intr.S. */
! 268: u_int8_t eb64plus_intr_mask[3] = { 0xff, 0xff, 0xff };
! 269:
! 270: void
! 271: eb64plus_intr_enable(irq)
! 272: int irq;
! 273: {
! 274: int byte = (irq / 8), bit = (irq % 8);
! 275:
! 276: #if 1
! 277: printf("eb64plus_intr_enable: enabling %d (%d:%d)\n", irq, byte, bit);
! 278: #endif
! 279: eb64plus_intr_mask[byte] &= ~(1 << bit);
! 280:
! 281: bus_space_write_1(eb64plus_intrgate_iot, eb64plus_intrgate_ioh, byte,
! 282: eb64plus_intr_mask[byte]);
! 283: }
! 284:
! 285: void
! 286: eb64plus_intr_disable(irq)
! 287: int irq;
! 288: {
! 289: int byte = (irq / 8), bit = (irq % 8);
! 290:
! 291: #if 1
! 292: printf("eb64plus_intr_disable: disabling %d (%d:%d)\n", irq, byte, bit);
! 293: #endif
! 294: eb64plus_intr_mask[byte] |= (1 << bit);
! 295:
! 296: bus_space_write_1(eb64plus_intrgate_iot, eb64plus_intrgate_ioh, byte,
! 297: eb64plus_intr_mask[byte]);
! 298: }
! 299: #endif
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