1/* $NetBSD: ali1543.c,v 1.13 2023/12/20 15:00:08 thorpej 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29/*- 30 * Copyright (c) 1999 The NetBSD Foundation, Inc. 31 * All rights reserved. 32 * 33 * This code is derived from software contributed to The NetBSD Foundation 34 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 35 * NASA Ames Research Center. 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. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 47 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 48 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 49 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 50 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 51 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 52 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 53 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 54 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 55 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 56 * POSSIBILITY OF SUCH DAMAGE. 57 */ 58 59/* 60 * Copyright (c) 1999, by UCHIYAMA Yasushi 61 * All rights reserved. 62 * 63 * Redistribution and use in source and binary forms, with or without 64 * modification, are permitted provided that the following conditions 65 * are met: 66 * 1. Redistributions of source code must retain the above copyright 67 * notice, this list of conditions and the following disclaimer. 68 * 2. The name of the developer may NOT be used to endorse or promote products 69 * derived from this software without specific prior written permission. 70 * 71 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 72 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 73 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 74 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 75 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 76 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 77 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 78 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 79 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 80 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 81 * SUCH DAMAGE. 82 */ 83 84/* HAYAKAWA Koichi wrote ALi 1543 PCI ICU code basing on VIA82C586 driver */ 85 86#include <sys/cdefs.h> 87__KERNEL_RCSID(0, "$NetBSD: ali1543.c,v 1.13 2023/12/20 15:00:08 thorpej Exp $"); 88 89#include <sys/param.h> 90#include <sys/systm.h> 91#include <sys/errno.h> 92#include <sys/device.h> 93#include <sys/proc.h> 94 95#include <machine/intr.h> 96#include <sys/bus.h> 97 98#include <dev/pci/pcivar.h> 99#include <dev/pci/pcireg.h> 100#include <dev/pci/pcidevs.h> 101 102#include <i386/pci/pci_intr_fixup.h> 103#include <i386/pci/piixvar.h> 104 105 106int ali1543_getclink(pciintr_icu_handle_t, int, int *); 107int ali1543_get_intr(pciintr_icu_handle_t, int, int *); 108int ali1543_set_intr(pciintr_icu_handle_t, int, int); 109 110 111const struct pciintr_icu ali1543_icu = { 112 ali1543_getclink, 113 ali1543_get_intr, 114 ali1543_set_intr, 115 piix_get_trigger, 116 piix_set_trigger, 117}; 118 119 120/* 121 * Linux source code (linux/arch/i386/kernel/pci-irq.c) says that the 122 * irq order of ALi PCI ICU is shuffled. 123 */ 124static const int ali1543_intr_shuffle_get[16] = { 125 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15 126}; 127static const int ali1543_intr_shuffle_set[16] = { 128 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15 129}; 130 131#define ALI1543_IRQ_MASK 0xdefa 132 133#define ALI1543_LEGAL_LINK(link) (((link) >= 0) && ((link) <= 7)) 134#define ALI1543_LEGAL_IRQ(irq) ((1 << (irq)) & ALI1543_IRQ_MASK) 135 136#define ALI1543_INTR_CFG_REG 0x48 137 138#define ALI1543_INTR_PIRQA_SHIFT 0 139#define ALI1543_INTR_PIRQA_MASK 0x0000000f 140#define ALI1543_INTR_PIRQB_SHIFT 4 141#define ALI1543_INTR_PIRQB_MASK 0x000000f0 142#define ALI1543_INTR_PIRQC_SHIFT 8 143#define ALI1543_INTR_PIRQC_MASK 0x00000f00 144#define ALI1543_INTR_PIRQD_SHIFT 12 145#define ALI1543_INTR_PIRQD_MASK 0x0000f000 146 147#define ALI1543_INTR_PIRQ_SHIFT(clink) ((clink)*4) 148#define ALI1543_INTR_PIRQ_IRQ(reg, clink) \ 149 (((reg) >> ((clink)*4)) & 0x0f) 150#define ALI1543_PIRQ(reg, clink) \ 151 ali1543_intr_shuffle_get[ALI1543_INTR_PIRQ_IRQ((reg), (clink))] 152 153 154int 155ali1543_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, 156 pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) 157{ 158 159 if (piix_init(pc, iot, tag, ptagp, phandp) == 0) { 160 *ptagp = &ali1543_icu; 161 162 return (0); 163 } 164 165 return (1); 166} 167 168int 169ali1543_getclink(pciintr_icu_handle_t v, int link, int *clinkp) 170{ 171 172 if (ALI1543_LEGAL_LINK(link - 1)) { 173 *clinkp = link - 1; 174 return (0); 175 } 176 177 return (1); 178} 179 180int 181ali1543_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) 182{ 183 struct piix_handle *ph = v; 184 pcireg_t reg; 185 int val; 186 187 if (ALI1543_LEGAL_LINK(clink) == 0) 188 return (1); 189 190 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG); 191#ifdef DEBUG_1543 192 printf("ali1543: PIRQ reg 0x%08x\n", reg); /* XXX debug */ 193#endif /* DEBUG_1543 */ 194 val = ALI1543_PIRQ(reg, clink); 195 *irqp = (val == 0) ? 196 X86_PCI_INTERRUPT_LINE_NO_CONNECTION : val; 197 198 return (0); 199} 200 201int 202ali1543_set_intr(pciintr_icu_handle_t v, int clink, int irq) 203{ 204 struct piix_handle *ph = v; 205 int shift, val; 206 pcireg_t reg; 207 208 if (ALI1543_LEGAL_LINK(clink) == 0 || ALI1543_LEGAL_IRQ(irq) == 0) 209 return (1); 210 211 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG); 212 ali1543_get_intr(v, clink, &val); 213 shift = ALI1543_INTR_PIRQ_SHIFT(clink); 214 reg &= ~(0x0f << shift); 215 reg |= (ali1543_intr_shuffle_set[irq] << shift); 216 pci_conf_write(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG, reg); 217 if (ali1543_get_intr(v, clink, &val) != 0 || val != irq) 218 return (1); 219 220 return (0); 221} 222