ali1543.c revision 1.7
1/* $NetBSD: ali1543.c,v 1.7 2005/12/11 12:17:43 christos 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 * 3. All advertising materials mentioning features or use of this software 49 * must display the following acknowledgement: 50 * This product includes software developed by the NetBSD 51 * Foundation, Inc. and its contributors. 52 * 4. Neither the name of The NetBSD Foundation nor the names of its 53 * contributors may be used to endorse or promote products derived 54 * from this software without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 57 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 58 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 59 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 60 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 61 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 62 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 63 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 64 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 65 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 66 * POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69/* 70 * Copyright (c) 1999, by UCHIYAMA Yasushi 71 * All rights reserved. 72 * 73 * Redistribution and use in source and binary forms, with or without 74 * modification, are permitted provided that the following conditions 75 * are met: 76 * 1. Redistributions of source code must retain the above copyright 77 * notice, this list of conditions and the following disclaimer. 78 * 2. The name of the developer may NOT be used to endorse or promote products 79 * derived from this software without specific prior written permission. 80 * 81 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 82 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 83 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 84 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 85 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 86 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 87 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 88 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 89 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 90 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 91 * SUCH DAMAGE. 92 */ 93 94/* HAYAKAWA Koichi wrote ALi 1543 PCI ICU code basing on VIA82C586 driver */ 95 96#include <sys/cdefs.h> 97__KERNEL_RCSID(0, "$NetBSD: ali1543.c,v 1.7 2005/12/11 12:17:43 christos Exp $"); 98 99#include <sys/param.h> 100#include <sys/systm.h> 101#include <sys/errno.h> 102#include <sys/device.h> 103#include <sys/malloc.h> 104#include <sys/proc.h> 105 106#include <machine/intr.h> 107#include <machine/bus.h> 108 109#include <dev/pci/pcivar.h> 110#include <dev/pci/pcireg.h> 111#include <dev/pci/pcidevs.h> 112 113#include <i386/pci/pci_intr_fixup.h> 114#include <i386/pci/piixvar.h> 115 116 117int ali1543_getclink(pciintr_icu_handle_t, int, int *); 118int ali1543_get_intr(pciintr_icu_handle_t, int, int *); 119int ali1543_set_intr(pciintr_icu_handle_t, int, int); 120 121 122const struct pciintr_icu ali1543_icu = { 123 ali1543_getclink, 124 ali1543_get_intr, 125 ali1543_set_intr, 126 piix_get_trigger, 127 piix_set_trigger, 128}; 129 130 131/* 132 * Linux source code (linux/arch/i386/kernel/pci-irq.c) says that the 133 * irq order of ALi PCI ICU is shuffled. 134 */ 135static const int ali1543_intr_shuffle_get[16] = { 136 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15 137}; 138static const int ali1543_intr_shuffle_set[16] = { 139 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15 140}; 141 142#define ALI1543_IRQ_MASK 0xdefa 143 144#define ALI1543_LEGAL_LINK(link) (((link) >= 0) && ((link) <= 7)) 145#define ALI1543_LEGAL_IRQ(irq) ((1 << (irq)) & ALI1543_IRQ_MASK) 146 147#define ALI1543_INTR_CFG_REG 0x48 148 149#define ALI1543_INTR_PIRQA_SHIFT 0 150#define ALI1543_INTR_PIRQA_MASK 0x0000000f 151#define ALI1543_INTR_PIRQB_SHIFT 4 152#define ALI1543_INTR_PIRQB_MASK 0x000000f0 153#define ALI1543_INTR_PIRQC_SHIFT 8 154#define ALI1543_INTR_PIRQC_MASK 0x00000f00 155#define ALI1543_INTR_PIRQD_SHIFT 12 156#define ALI1543_INTR_PIRQD_MASK 0x0000f000 157 158#define ALI1543_INTR_PIRQ_SHIFT(clink) ((clink)*4) 159#define ALI1543_INTR_PIRQ_IRQ(reg, clink) \ 160 (((reg) >> ((clink)*4)) & 0x0f) 161#define ALI1543_PIRQ(reg, clink) \ 162 ali1543_intr_shuffle_get[ALI1543_INTR_PIRQ_IRQ((reg), (clink))] 163 164 165int 166ali1543_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, 167 pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) 168{ 169 170 if (piix_init(pc, iot, tag, ptagp, phandp) == 0) { 171 *ptagp = &ali1543_icu; 172 173 return (0); 174 } 175 176 return (1); 177} 178 179int 180ali1543_getclink(pciintr_icu_handle_t v, int link, int *clinkp) 181{ 182 183 if (ALI1543_LEGAL_LINK(link - 1)) { 184 *clinkp = link - 1; 185 return (0); 186 } 187 188 return (1); 189} 190 191int 192ali1543_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) 193{ 194 struct piix_handle *ph = v; 195 pcireg_t reg; 196 int val; 197 198 if (ALI1543_LEGAL_LINK(clink) == 0) 199 return (1); 200 201 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG); 202#ifdef DEBUG_1543 203 printf("ali1543: PIRQ reg 0x%08x\n", reg); /* XXX debug */ 204#endif /* DEBUG_1543 */ 205 val = ALI1543_PIRQ(reg, clink); 206 *irqp = (val == 0) ? 207 X86_PCI_INTERRUPT_LINE_NO_CONNECTION : val; 208 209 return (0); 210} 211 212int 213ali1543_set_intr(pciintr_icu_handle_t v, int clink, int irq) 214{ 215 struct piix_handle *ph = v; 216 int shift, val; 217 pcireg_t reg; 218 219 if (ALI1543_LEGAL_LINK(clink) == 0 || ALI1543_LEGAL_IRQ(irq) == 0) 220 return (1); 221 222 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG); 223 ali1543_get_intr(v, clink, &val); 224 shift = ALI1543_INTR_PIRQ_SHIFT(clink); 225 reg &= ~(0x0f << shift); 226 reg |= (ali1543_intr_shuffle_set[irq] << shift); 227 pci_conf_write(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG, reg); 228 if (ali1543_get_intr(v, clink, &val) != 0 || val != irq) 229 return (1); 230 231 return (0); 232} 233