Annotation of sys/arch/i386/pci/amd756.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: amd756.c,v 1.4 2006/09/19 11:06:34 jsg Exp $ */
! 2: /* $NetBSD$ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1999 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) 1999, by UCHIYAMA Yasushi
! 43: * All rights reserved.
! 44: *
! 45: * Redistribution and use in source and binary forms, with or without
! 46: * modification, are permitted provided that the following conditions
! 47: * are met:
! 48: * 1. Redistributions of source code must retain the above copyright
! 49: * notice, this list of conditions and the following disclaimer.
! 50: * 2. The name of the developer may NOT be used to endorse or promote products
! 51: * derived from this software without specific prior written permission.
! 52: *
! 53: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 54: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 55: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 56: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 57: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 58: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 59: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 60: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 61: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 62: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 63: * SUCH DAMAGE.
! 64: */
! 65:
! 66: /*
! 67: * Support for the Advanced Micro Devices AMD756 Peripheral Bus Controller.
! 68: */
! 69:
! 70: #include <sys/param.h>
! 71: #include <sys/systm.h>
! 72: #include <sys/device.h>
! 73: #include <sys/malloc.h>
! 74:
! 75: #include <machine/intr.h>
! 76: #include <machine/bus.h>
! 77:
! 78: #include <dev/pci/pcivar.h>
! 79: #include <dev/pci/pcireg.h>
! 80: #include <dev/pci/pcidevs.h>
! 81:
! 82: #include <i386/pci/pcibiosvar.h>
! 83: #include <i386/pci/amd756reg.h>
! 84:
! 85: struct viper_handle {
! 86: bus_space_tag_t ph_iot;
! 87: bus_space_handle_t ph_regs_ioh;
! 88: pci_chipset_tag_t ph_pc;
! 89: pcitag_t ph_tag;
! 90: };
! 91:
! 92: int amd756_getclink(pciintr_icu_handle_t, int, int *);
! 93: int amd756_get_intr(pciintr_icu_handle_t, int, int *);
! 94: int amd756_set_intr(pciintr_icu_handle_t, int, int);
! 95: int amd756_get_trigger(pciintr_icu_handle_t, int, int *);
! 96: int amd756_set_trigger(pciintr_icu_handle_t, int, int);
! 97: #ifdef VIPER_DEBUG
! 98: static void amd756_pir_dump(struct viper_handle *);
! 99: #endif
! 100:
! 101: const struct pciintr_icu amd756_pci_icu = {
! 102: amd756_getclink,
! 103: amd756_get_intr,
! 104: amd756_set_intr,
! 105: amd756_get_trigger,
! 106: amd756_set_trigger,
! 107: };
! 108:
! 109:
! 110: int
! 111: amd756_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag,
! 112: pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp)
! 113: {
! 114: struct viper_handle *ph;
! 115:
! 116: ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT);
! 117: if (ph == NULL)
! 118: return (1);
! 119:
! 120: ph->ph_iot = iot;
! 121: ph->ph_pc = pc;
! 122: ph->ph_tag = tag;
! 123:
! 124: *ptagp = &amd756_pci_icu;
! 125: *phandp = ph;
! 126:
! 127: #ifdef VIPER_DEBUG
! 128: amd756_pir_dump(ph);
! 129: #endif
! 130:
! 131: return 0;
! 132: }
! 133:
! 134: int
! 135: amd756_getclink(pciintr_icu_handle_t v, int link, int *clinkp)
! 136: {
! 137: if (AMD756_LEGAL_LINK(link - 1) == 0)
! 138: return (1);
! 139:
! 140: *clinkp = link - 1;
! 141: return (0);
! 142: }
! 143:
! 144: int
! 145: amd756_get_intr(pciintr_icu_handle_t v, int clink, int *irqp)
! 146: {
! 147: struct viper_handle *ph = v;
! 148: pcireg_t reg;
! 149: int val;
! 150:
! 151: if (AMD756_LEGAL_LINK(clink) == 0)
! 152: return (1);
! 153:
! 154: reg = AMD756_GET_PIIRQSEL(ph);
! 155: val = (reg >> (4*clink)) & 0x0f;
! 156: *irqp = (val == 0) ?
! 157: I386_PCI_INTERRUPT_LINE_NO_CONNECTION : val;
! 158:
! 159: return (0);
! 160: }
! 161:
! 162: int
! 163: amd756_set_intr(pciintr_icu_handle_t v, int clink, int irq)
! 164: {
! 165: struct viper_handle *ph = v;
! 166: int val;
! 167: pcireg_t reg;
! 168:
! 169: if (AMD756_LEGAL_LINK(clink) == 0 || AMD756_LEGAL_IRQ(irq) == 0)
! 170: return (1);
! 171:
! 172: reg = AMD756_GET_PIIRQSEL(ph);
! 173: amd756_get_intr(v, clink, &val);
! 174: reg &= ~(0x000f << (4*clink));
! 175: reg |= irq << (4*clink);
! 176: AMD756_SET_PIIRQSEL(ph, reg);
! 177:
! 178: return 0;
! 179: }
! 180:
! 181: int
! 182: amd756_get_trigger(pciintr_icu_handle_t v, int irq, int *triggerp)
! 183: {
! 184: struct viper_handle *ph = v;
! 185: int i, pciirq;
! 186: pcireg_t reg;
! 187:
! 188: if (AMD756_LEGAL_IRQ(irq) == 0)
! 189: return (1);
! 190:
! 191: for (i = 0; i <= 3; i++) {
! 192: amd756_get_intr(v, i, &pciirq);
! 193: if (pciirq == irq) {
! 194: reg = AMD756_GET_EDGESEL(ph);
! 195: if (reg & (1 << i))
! 196: *triggerp = IST_EDGE;
! 197: else
! 198: *triggerp = IST_LEVEL;
! 199: break;
! 200: }
! 201: }
! 202:
! 203: return 0;
! 204: }
! 205:
! 206: int
! 207: amd756_set_trigger(pciintr_icu_handle_t v, int irq, int trigger)
! 208: {
! 209: struct viper_handle *ph = v;
! 210: int i, pciirq;
! 211: pcireg_t reg;
! 212:
! 213: if (AMD756_LEGAL_IRQ(irq) == 0)
! 214: return (1);
! 215:
! 216: for (i = 0; i <= 3; i++) {
! 217: amd756_get_intr(v, i, &pciirq);
! 218: if (pciirq == irq) {
! 219: reg = AMD756_GET_PIIRQSEL(ph);
! 220: if (trigger == IST_LEVEL)
! 221: reg &= ~(1 << (4*i));
! 222: else
! 223: reg |= 1 << (4*i);
! 224: AMD756_SET_PIIRQSEL(ph, reg);
! 225: break;
! 226: }
! 227: }
! 228:
! 229: return (0);
! 230: }
! 231:
! 232: #ifdef VIPER_DEBUG
! 233: static void
! 234: amd756_pir_dump(struct viper_handle *ph)
! 235: {
! 236: int a, b;
! 237:
! 238: printf ("VIPER PCI INTERRUPT ROUTING REGISTERS:\n");
! 239:
! 240: a = AMD756_GET_EDGESEL(ph);
! 241: b = AMD756_GET_PIIRQSEL(ph);
! 242:
! 243: printf ("TRIGGER: %02x, ROUTING: %04x\n", a, b);
! 244: }
! 245: #endif
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