ali1543.c revision 1.10
1/* $NetBSD: ali1543.c,v 1.10 2008/04/28 20:23:24 martin Exp $ */ 2 3/* 4 * Copyright (c) 2001 5 * HAYAKAWA Koichi. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 27 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32/*- 33 * Copyright (c) 1999 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 38 * NASA Ames Research Center. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 50 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 51 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 52 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 53 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 54 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 55 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 56 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 57 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 58 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 59 * POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62/* 63 * Copyright (c) 1999, by UCHIYAMA Yasushi 64 * All rights reserved. 65 * 66 * Redistribution and use in source and binary forms, with or without 67 * modification, are permitted provided that the following conditions 68 * are met: 69 * 1. Redistributions of source code must retain the above copyright 70 * notice, this list of conditions and the following disclaimer. 71 * 2. The name of the developer may NOT be used to endorse or promote products 72 * derived from this software without specific prior written permission. 73 * 74 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 75 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 76 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 77 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 78 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 79 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 80 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 81 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 82 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 83 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 84 * SUCH DAMAGE. 85 */ 86 87/* HAYAKAWA Koichi wrote ALi 1543 PCI ICU code basing on VIA82C586 driver */ 88 89#include <sys/cdefs.h> 90__KERNEL_RCSID(0, "$NetBSD: ali1543.c,v 1.10 2008/04/28 20:23:24 martin Exp $"); 91 92#include <sys/param.h> 93#include <sys/systm.h> 94#include <sys/errno.h> 95#include <sys/device.h> 96#include <sys/malloc.h> 97#include <sys/proc.h> 98 99#include <machine/intr.h> 100#include <machine/bus.h> 101 102#include <dev/pci/pcivar.h> 103#include <dev/pci/pcireg.h> 104#include <dev/pci/pcidevs.h> 105 106#include <i386/pci/pci_intr_fixup.h> 107#include <i386/pci/piixvar.h> 108 109 110int ali1543_getclink(pciintr_icu_handle_t, int, int *); 111int ali1543_get_intr(pciintr_icu_handle_t, int, int *); 112int ali1543_set_intr(pciintr_icu_handle_t, int, int); 113 114 115const struct pciintr_icu ali1543_icu = { 116 ali1543_getclink, 117 ali1543_get_intr, 118 ali1543_set_intr, 119 piix_get_trigger, 120 piix_set_trigger, 121}; 122 123 124/* 125 * Linux source code (linux/arch/i386/kernel/pci-irq.c) says that the 126 * irq order of ALi PCI ICU is shuffled. 127 */ 128static const int ali1543_intr_shuffle_get[16] = { 129 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15 130}; 131static const int ali1543_intr_shuffle_set[16] = { 132 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15 133}; 134 135#define ALI1543_IRQ_MASK 0xdefa 136 137#define ALI1543_LEGAL_LINK(link) (((link) >= 0) && ((link) <= 7)) 138#define ALI1543_LEGAL_IRQ(irq) ((1 << (irq)) & ALI1543_IRQ_MASK) 139 140#define ALI1543_INTR_CFG_REG 0x48 141 142#define ALI1543_INTR_PIRQA_SHIFT 0 143#define ALI1543_INTR_PIRQA_MASK 0x0000000f 144#define ALI1543_INTR_PIRQB_SHIFT 4 145#define ALI1543_INTR_PIRQB_MASK 0x000000f0 146#define ALI1543_INTR_PIRQC_SHIFT 8 147#define ALI1543_INTR_PIRQC_MASK 0x00000f00 148#define ALI1543_INTR_PIRQD_SHIFT 12 149#define ALI1543_INTR_PIRQD_MASK 0x0000f000 150 151#define ALI1543_INTR_PIRQ_SHIFT(clink) ((clink)*4) 152#define ALI1543_INTR_PIRQ_IRQ(reg, clink) \ 153 (((reg) >> ((clink)*4)) & 0x0f) 154#define ALI1543_PIRQ(reg, clink) \ 155 ali1543_intr_shuffle_get[ALI1543_INTR_PIRQ_IRQ((reg), (clink))] 156 157 158int 159ali1543_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, 160 pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) 161{ 162 163 if (piix_init(pc, iot, tag, ptagp, phandp) == 0) { 164 *ptagp = &ali1543_icu; 165 166 return (0); 167 } 168 169 return (1); 170} 171 172int 173ali1543_getclink(pciintr_icu_handle_t v, int link, int *clinkp) 174{ 175 176 if (ALI1543_LEGAL_LINK(link - 1)) { 177 *clinkp = link - 1; 178 return (0); 179 } 180 181 return (1); 182} 183 184int 185ali1543_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) 186{ 187 struct piix_handle *ph = v; 188 pcireg_t reg; 189 int val; 190 191 if (ALI1543_LEGAL_LINK(clink) == 0) 192 return (1); 193 194 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG); 195#ifdef DEBUG_1543 196 printf("ali1543: PIRQ reg 0x%08x\n", reg); /* XXX debug */ 197#endif /* DEBUG_1543 */ 198 val = ALI1543_PIRQ(reg, clink); 199 *irqp = (val == 0) ? 200 X86_PCI_INTERRUPT_LINE_NO_CONNECTION : val; 201 202 return (0); 203} 204 205int 206ali1543_set_intr(pciintr_icu_handle_t v, int clink, int irq) 207{ 208 struct piix_handle *ph = v; 209 int shift, val; 210 pcireg_t reg; 211 212 if (ALI1543_LEGAL_LINK(clink) == 0 || ALI1543_LEGAL_IRQ(irq) == 0) 213 return (1); 214 215 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG); 216 ali1543_get_intr(v, clink, &val); 217 shift = ALI1543_INTR_PIRQ_SHIFT(clink); 218 reg &= ~(0x0f << shift); 219 reg |= (ali1543_intr_shuffle_set[irq] << shift); 220 pci_conf_write(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG, reg); 221 if (ali1543_get_intr(v, clink, &val) != 0 || val != irq) 222 return (1); 223 224 return (0); 225} 226