Annotation of sys/arch/alpha/pci/pci_1000.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: pci_1000.c,v 1.5 2006/06/15 20:08:29 brad Exp $ */
! 2: /* $NetBSD: pci_1000.c,v 1.12 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 based on pci_kn20aa.c, written by Chris G. Demetriou at
! 9: * Carnegie-Mellon University. Platform support for Mikasa and Mikasa/Pinnacle
! 10: * (Pinkasa) by Ross Harvey with copyright assignment by permission of Avalon
! 11: * Computer Systems, Inc.
! 12: *
! 13: * Redistribution and use in source and binary forms, with or without
! 14: * modification, are permitted provided that the following conditions
! 15: * are met:
! 16: * 1. Redistributions of source code must retain the above copyright
! 17: * notice, this list of conditions and the following disclaimer.
! 18: * 2. Redistributions in binary form must reproduce the above copyright
! 19: * notice, this list of conditions and the following disclaimer in the
! 20: * documentation and/or other materials provided with the distribution.
! 21: * 3. All advertising materials mentioning features or use of this software
! 22: * must display the following acknowledgement:
! 23: * This product includes software developed by the NetBSD
! 24: * Foundation, Inc. and its contributors.
! 25: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 26: * contributors may be used to endorse or promote products derived
! 27: * from this software without specific prior written permission.
! 28: *
! 29: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 30: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 31: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 32: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 33: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 34: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 35: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 36: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 37: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 38: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 39: * POSSIBILITY OF SUCH DAMAGE.
! 40: */
! 41:
! 42: /*
! 43: * Copyright (c) 1995, 1996 Carnegie-Mellon University.
! 44: * All rights reserved.
! 45: *
! 46: * Author: Chris G. Demetriou
! 47: *
! 48: * Permission to use, copy, modify and distribute this software and
! 49: * its documentation is hereby granted, provided that both the copyright
! 50: * notice and this permission notice appear in all copies of the
! 51: * software, derivative works or modified versions, and any portions
! 52: * thereof, and that both notices appear in supporting documentation.
! 53: *
! 54: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
! 55: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
! 56: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
! 57: *
! 58: * Carnegie Mellon requests users of this software to return to
! 59: *
! 60: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
! 61: * School of Computer Science
! 62: * Carnegie Mellon University
! 63: * Pittsburgh PA 15213-3890
! 64: *
! 65: * any improvements or extensions that they make and grant Carnegie the
! 66: * rights to redistribute these changes.
! 67: */
! 68:
! 69: #include <sys/types.h>
! 70: #include <sys/param.h>
! 71: #include <sys/time.h>
! 72: #include <sys/systm.h>
! 73: #include <sys/errno.h>
! 74: #include <sys/malloc.h>
! 75: #include <sys/device.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/pci_1000.h>
! 85:
! 86: #include "sio.h"
! 87: #if NSIO > 0 || NPCEB > 0
! 88: #include <alpha/pci/siovar.h>
! 89: #endif
! 90:
! 91: static bus_space_tag_t another_mystery_icu_iot;
! 92: static bus_space_handle_t another_mystery_icu_ioh;
! 93:
! 94: int dec_1000_intr_map(void *, pcitag_t, int, int, pci_intr_handle_t *);
! 95: const char *dec_1000_intr_string(void *, pci_intr_handle_t);
! 96: int dec_1000_intr_line(void *, pci_intr_handle_t);
! 97: void *dec_1000_intr_establish(void *, pci_intr_handle_t,
! 98: int, int (*func)(void *), void *, char *);
! 99: void dec_1000_intr_disestablish(void *, void *);
! 100:
! 101: #define PCI_NIRQ 16
! 102: #define PCI_STRAY_MAX 5
! 103:
! 104: struct alpha_shared_intr *dec_1000_pci_intr;
! 105:
! 106: void dec_1000_iointr(void *arg, unsigned long vec);
! 107: void dec_1000_enable_intr(int irq);
! 108: void dec_1000_disable_intr(int irq);
! 109: void pci_1000_imi(void);
! 110: static pci_chipset_tag_t pc_tag;
! 111:
! 112: void
! 113: pci_1000_pickintr(core, iot, memt, pc)
! 114: void *core;
! 115: bus_space_tag_t iot, memt;
! 116: pci_chipset_tag_t pc;
! 117: {
! 118: #if 0
! 119: char *cp;
! 120: #endif
! 121: int i;
! 122:
! 123: another_mystery_icu_iot = iot;
! 124:
! 125: pc_tag = pc;
! 126: if (bus_space_map(iot, 0x536, 2, 0, &another_mystery_icu_ioh))
! 127: panic("pci_1000_pickintr");
! 128: pc->pc_intr_v = core;
! 129: pc->pc_intr_map = dec_1000_intr_map;
! 130: pc->pc_intr_string = dec_1000_intr_string;
! 131: pc->pc_intr_line = dec_1000_intr_line;
! 132: pc->pc_intr_establish = dec_1000_intr_establish;
! 133: pc->pc_intr_disestablish = dec_1000_intr_disestablish;
! 134:
! 135: pc->pc_pciide_compat_intr_establish = NULL;
! 136: pc->pc_pciide_compat_intr_disestablish = NULL;
! 137:
! 138: dec_1000_pci_intr =
! 139: alpha_shared_intr_alloc(PCI_NIRQ);
! 140: for (i = 0; i < PCI_NIRQ; i++) {
! 141: alpha_shared_intr_set_maxstrays(dec_1000_pci_intr, i,
! 142: PCI_STRAY_MAX);
! 143: }
! 144:
! 145: pci_1000_imi();
! 146: #if NSIO > 0 || NPCEB > 0
! 147: sio_intr_setup(pc, iot);
! 148: #endif
! 149: }
! 150:
! 151: int
! 152: dec_1000_intr_map(ccv, bustag, buspin, line, ihp)
! 153: void *ccv;
! 154: pcitag_t bustag;
! 155: int buspin, line;
! 156: pci_intr_handle_t *ihp;
! 157: {
! 158: int device;
! 159:
! 160: if (buspin == 0) /* No IRQ used. */
! 161: return 1;
! 162: if (!(1 <= buspin && buspin <= 4))
! 163: goto bad;
! 164:
! 165: pci_decompose_tag(pc_tag, bustag, NULL, &device, NULL);
! 166:
! 167: switch(device) {
! 168: case 6:
! 169: if(buspin != 1)
! 170: break;
! 171: *ihp = 0xc; /* integrated ncr scsi */
! 172: return 0;
! 173: case 11:
! 174: case 12:
! 175: case 13:
! 176: *ihp = (device - 11) * 4 + buspin - 1;
! 177: return 0;
! 178: }
! 179:
! 180: bad: printf("dec_1000_intr_map: can't map dev %d pin %d\n", device, buspin);
! 181: return 1;
! 182: }
! 183:
! 184: const char *
! 185: dec_1000_intr_string(ccv, ih)
! 186: void *ccv;
! 187: pci_intr_handle_t ih;
! 188: {
! 189: static const char irqmsg_fmt[] = "dec_1000 irq %ld";
! 190: static char irqstr[sizeof irqmsg_fmt];
! 191:
! 192: if (ih >= PCI_NIRQ)
! 193: panic("dec_1000_intr_string: bogus dec_1000 IRQ 0x%lx", ih);
! 194:
! 195: snprintf(irqstr, sizeof irqstr, irqmsg_fmt, ih);
! 196: return (irqstr);
! 197: }
! 198:
! 199: int
! 200: dec_1000_intr_line(ccv, ih)
! 201: void *ccv;
! 202: pci_intr_handle_t ih;
! 203: {
! 204: #if NSIO > 0
! 205: return sio_intr_line(NULL /*XXX*/, ih);
! 206: #else
! 207: return (ih);
! 208: #endif
! 209: }
! 210:
! 211: void *
! 212: dec_1000_intr_establish(ccv, ih, level, func, arg, name)
! 213: void *ccv;
! 214: pci_intr_handle_t ih;
! 215: int level;
! 216: int (*func)(void *);
! 217: void *arg;
! 218: char *name;
! 219: {
! 220: void *cookie;
! 221:
! 222: if (ih >= PCI_NIRQ)
! 223: panic("dec_1000_intr_establish: IRQ too high, 0x%lx", ih);
! 224:
! 225: cookie = alpha_shared_intr_establish(dec_1000_pci_intr, ih, IST_LEVEL,
! 226: level, func, arg, name);
! 227:
! 228: if (cookie != NULL &&
! 229: alpha_shared_intr_firstactive(dec_1000_pci_intr, ih)) {
! 230: scb_set(0x900 + SCB_IDXTOVEC(ih), dec_1000_iointr, NULL);
! 231: dec_1000_enable_intr(ih);
! 232: }
! 233: return (cookie);
! 234: }
! 235:
! 236: void
! 237: dec_1000_intr_disestablish(ccv, cookie)
! 238: void *ccv, *cookie;
! 239: {
! 240: struct alpha_shared_intrhand *ih = cookie;
! 241: unsigned int irq = ih->ih_num;
! 242: int s;
! 243:
! 244: s = splhigh();
! 245:
! 246: alpha_shared_intr_disestablish(dec_1000_pci_intr, cookie,
! 247: "dec_1000 irq");
! 248: if (alpha_shared_intr_isactive(dec_1000_pci_intr, irq) == 0) {
! 249: dec_1000_disable_intr(irq);
! 250: alpha_shared_intr_set_dfltsharetype(dec_1000_pci_intr, irq,
! 251: IST_NONE);
! 252: scb_free(0x900 + SCB_IDXTOVEC(irq));
! 253: }
! 254:
! 255: splx(s);
! 256: }
! 257:
! 258: void
! 259: dec_1000_iointr(arg, vec)
! 260: void *arg;
! 261: unsigned long vec;
! 262: {
! 263: int irq;
! 264:
! 265: irq = SCB_VECTOIDX(vec - 0x900);
! 266:
! 267: if (!alpha_shared_intr_dispatch(dec_1000_pci_intr, irq)) {
! 268: alpha_shared_intr_stray(dec_1000_pci_intr, irq,
! 269: "dec_1000 irq");
! 270: if (ALPHA_SHARED_INTR_DISABLE(dec_1000_pci_intr, irq))
! 271: dec_1000_disable_intr(irq);
! 272: } else
! 273: alpha_shared_intr_reset_strays(dec_1000_pci_intr, irq);
! 274: }
! 275:
! 276: /*
! 277: * Read and write the mystery ICU IMR registers
! 278: */
! 279:
! 280: #define IR() bus_space_read_2(another_mystery_icu_iot, \
! 281: another_mystery_icu_ioh, 0)
! 282:
! 283: #define IW(v) bus_space_write_2(another_mystery_icu_iot, \
! 284: another_mystery_icu_ioh, 0, (v))
! 285:
! 286: /*
! 287: * Enable and disable interrupts at the ICU level
! 288: */
! 289:
! 290: void
! 291: dec_1000_enable_intr(irq)
! 292: int irq;
! 293: {
! 294: IW(IR() | 1 << irq);
! 295: }
! 296:
! 297: void
! 298: dec_1000_disable_intr(irq)
! 299: int irq;
! 300: {
! 301: IW(IR() & ~(1 << irq));
! 302: }
! 303: /*
! 304: * Initialize mystery ICU
! 305: */
! 306: void
! 307: pci_1000_imi()
! 308: {
! 309: IW(0); /* XXX ?? */
! 310: }
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to pci_1000.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / arch / alpha / pci