1/* $NetBSD: amd756.c,v 1.8 2008/04/28 20:23:24 martin Exp $ */ 2 3/*- 4 * Copyright (c) 1999, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/* 34 * Copyright (c) 1999, by UCHIYAMA Yasushi 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. The name of the developer may NOT be used to endorse or promote products 43 * derived from this software without specific prior written permission. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 48 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 */ 57 58/* 59 * Support for the Advanced Micro Devices AMD756 Peripheral Bus Controller. 60 */ 61 62#include <sys/cdefs.h> 63__KERNEL_RCSID(0, "$NetBSD: amd756.c,v 1.8 2008/04/28 20:23:24 martin Exp $"); 64 65#include <sys/param.h> 66#include <sys/systm.h> 67#include <sys/device.h> 68#include <sys/malloc.h> 69 70#include <machine/intr.h> 71#include <sys/bus.h> 72 73#include <dev/pci/pcivar.h> 74#include <dev/pci/pcireg.h> 75#include <dev/pci/pcidevs.h> 76 77#include <i386/pci/pci_intr_fixup.h> 78#include <i386/pci/amd756reg.h> 79 80struct amd756_handle { 81 bus_space_tag_t ph_iot; 82 bus_space_handle_t ph_regs_ioh; 83 pci_chipset_tag_t ph_pc; 84 pcitag_t ph_tag; 85}; 86 87int amd756_getclink(pciintr_icu_handle_t, int, int *); 88int amd756_get_intr(pciintr_icu_handle_t, int, int *); 89int amd756_set_intr(pciintr_icu_handle_t, int, int); 90int amd756_get_trigger(pciintr_icu_handle_t, int, int *); 91int amd756_set_trigger(pciintr_icu_handle_t, int, int); 92#ifdef AMD756_DEBUG 93static void amd756_pir_dump(struct amd756_handle *); 94#endif 95 96const struct pciintr_icu amd756_pci_icu = { 97 amd756_getclink, 98 amd756_get_intr, 99 amd756_set_intr, 100 amd756_get_trigger, 101 amd756_set_trigger, 102}; 103 104 105int 106amd756_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, 107 pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) 108{ 109 struct amd756_handle *ph; 110 111 ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT); 112 if (ph == NULL) 113 return (1); 114 115 ph->ph_iot = iot; 116 ph->ph_pc = pc; 117 ph->ph_tag = tag; 118 119 *ptagp = &amd756_pci_icu; 120 *phandp = ph; 121 122#ifdef AMD756_DEBUG 123 amd756_pir_dump(ph); 124#endif 125 126 return (0); 127} 128 129int 130amd756_getclink(pciintr_icu_handle_t v, int link, int *clinkp) 131{ 132 if (AMD756_LEGAL_LINK(link - 1) == 0) 133 return (1); 134 135 *clinkp = link - 1; 136 137 return (0); 138} 139 140int 141amd756_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) 142{ 143 struct amd756_handle *ph = v; 144 pcireg_t reg; 145 int val; 146 147 if (AMD756_LEGAL_LINK(clink) == 0) 148 return (1); 149 150 reg = AMD756_GET_PIIRQSEL(ph); 151 val = (reg >> (4 * clink)) & 0x0f; 152 *irqp = (val == 0) ? 153 X86_PCI_INTERRUPT_LINE_NO_CONNECTION : val; 154 155 return (0); 156} 157 158int 159amd756_set_intr(pciintr_icu_handle_t v, int clink, int irq) 160{ 161 struct amd756_handle *ph = v; 162 int val; 163 pcireg_t reg; 164 165 if (AMD756_LEGAL_LINK(clink) == 0 || AMD756_LEGAL_IRQ(irq) == 0) 166 return (1); 167 168 reg = AMD756_GET_PIIRQSEL(ph); 169 amd756_get_intr(v, clink, &val); 170 reg &= ~(0x000f << (4 * clink)); 171 reg |= irq << (4 * clink); 172 AMD756_SET_PIIRQSEL(ph, reg); 173 174 return (0); 175} 176 177int 178amd756_get_trigger(pciintr_icu_handle_t v, int irq, int *triggerp) 179{ 180 struct amd756_handle *ph = v; 181 int i, pciirq; 182 pcireg_t reg; 183 184 if (AMD756_LEGAL_IRQ(irq) == 0) 185 return (1); 186 187 for (i = 0; i <= 3; i++) { 188 amd756_get_intr(v, i, &pciirq); 189 if (pciirq == irq) { 190 reg = AMD756_GET_EDGESEL(ph); 191 if (reg & (1 << i)) 192 *triggerp = IST_EDGE; 193 else 194 *triggerp = IST_LEVEL; 195 break; 196 } 197 } 198 199 return (0); 200} 201 202int 203amd756_set_trigger(pciintr_icu_handle_t v, int irq, int trigger) 204{ 205 struct amd756_handle *ph = v; 206 int i, pciirq; 207 pcireg_t reg; 208 209 if (AMD756_LEGAL_IRQ(irq) == 0) 210 return (1); 211 212 for (i = 0; i <= 3; i++) { 213 amd756_get_intr(v, i, &pciirq); 214 if (pciirq == irq) { 215 reg = AMD756_GET_PIIRQSEL(ph); 216 if (trigger == IST_LEVEL) 217 reg &= ~(1 << (4 * i)); 218 else 219 reg |= 1 << (4 * i); 220 AMD756_SET_PIIRQSEL(ph, reg); 221 break; 222 } 223 } 224 225 return (0); 226} 227 228#ifdef AMD756_DEBUG 229static void 230amd756_pir_dump(struct amd756_handle *ph) 231{ 232 int a, b; 233 234 printf ("AMD756 PCI INTERRUPT ROUTING REGISTERS:\n"); 235 236 a = AMD756_GET_EDGESEL(ph); 237 b = AMD756_GET_PIIRQSEL(ph); 238 239 printf ("TRIGGER: %02x, ROUTING: %04x\n", a, b); 240} 241#endif 242