1 /* $OpenBSD: ali1543.c,v 1.3 2008/06/27 06:03:08 ray Exp $ */ 2 /* $NetBSD: ali1543.c,v 1.2 2001/09/13 14:00:52 tshiozak Exp $ */ 3 4 /* 5 * Copyright (c) 2001 6 * HAYAKAWA Koichi. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 23 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 24 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * 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 The NetBSD Foundation, Inc. 35 * All rights reserved. 36 * 37 * This code is derived from software contributed to The NetBSD Foundation 38 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 39 * NASA Ames Research Center. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 51 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 52 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 53 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 54 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 55 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 56 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 57 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 58 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 59 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 60 * POSSIBILITY OF SUCH DAMAGE. 61 */ 62 63 /* 64 * Copyright (c) 1999, by UCHIYAMA Yasushi 65 * All rights reserved. 66 * 67 * Redistribution and use in source and binary forms, with or without 68 * modification, are permitted provided that the following conditions 69 * are met: 70 * 1. Redistributions of source code must retain the above copyright 71 * notice, this list of conditions and the following disclaimer. 72 * 2. The name of the developer may NOT be used to endorse or promote products 73 * derived from this software without specific prior written permission. 74 * 75 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 76 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 77 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 78 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 79 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 80 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 81 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 82 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 83 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 84 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 85 * SUCH DAMAGE. 86 */ 87 88 /* HAYAKAWA Koichi wrote ALi 1543 PCI ICU code basing on VIA82C586 driver */ 89 90 #include <sys/param.h> 91 #include <sys/systm.h> 92 #include <sys/errno.h> 93 #include <sys/device.h> 94 #include <sys/malloc.h> 95 #include <sys/proc.h> 96 97 #include <machine/intr.h> 98 #include <machine/bus.h> 99 100 #include <dev/pci/pcivar.h> 101 #include <dev/pci/pcireg.h> 102 #include <dev/pci/pcidevs.h> 103 104 #include <i386/pci/pcibiosvar.h> 105 #include <i386/pci/piixvar.h> 106 107 108 int ali1543_getclink (pciintr_icu_handle_t, int, int *); 109 int ali1543_get_intr (pciintr_icu_handle_t, int, int *); 110 int ali1543_set_intr (pciintr_icu_handle_t, int, int); 111 112 113 const struct pciintr_icu ali1543_icu = { 114 ali1543_getclink, 115 ali1543_get_intr, 116 ali1543_set_intr, 117 piix_get_trigger, 118 piix_set_trigger, 119 }; 120 121 122 /* 123 * Linux source code (linux/arch/i386/kernel/pci-irq.c) says that the 124 * irq order of ALi PCI ICU is shuffled. 125 */ 126 const static int ali1543_intr_shuffle_get[16] = { 127 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15 128 }; 129 const static int ali1543_intr_shuffle_set[16] = { 130 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15 131 }; 132 133 #define ALI1543_IRQ_MASK 0xdefa 134 135 #define ALI1543_LEGAL_LINK(link) (((link) >= 0) && ((link) <= 7)) 136 #define ALI1543_LEGAL_IRQ(irq) ((1 << (irq)) & ALI1543_IRQ_MASK) 137 138 #define ALI1543_INTR_CFG_REG 0x48 139 140 #define ALI1543_INTR_PIRQA_SHIFT 0 141 #define ALI1543_INTR_PIRQA_MASK 0x0000000f 142 #define ALI1543_INTR_PIRQB_SHIFT 4 143 #define ALI1543_INTR_PIRQB_MASK 0x000000f0 144 #define ALI1543_INTR_PIRQC_SHIFT 8 145 #define ALI1543_INTR_PIRQC_MASK 0x00000f00 146 #define ALI1543_INTR_PIRQD_SHIFT 12 147 #define ALI1543_INTR_PIRQD_MASK 0x0000f000 148 149 #define ALI1543_INTR_PIRQ_SHIFT(clink) ((clink)*4) 150 #define ALI1543_INTR_PIRQ_IRQ(reg, clink) \ 151 (((reg) >> ((clink)*4)) & 0x0f) 152 #define ALI1543_PIRQ(reg, clink) \ 153 ali1543_intr_shuffle_get[ALI1543_INTR_PIRQ_IRQ((reg), (clink))] 154 155 156 int 157 ali1543_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, 158 pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) 159 { 160 161 if (piix_init(pc, iot, tag, ptagp, phandp) == 0) { 162 *ptagp = &ali1543_icu; 163 164 return (0); 165 } 166 167 return (1); 168 } 169 170 int 171 ali1543_getclink(pciintr_icu_handle_t v, int link, int *clinkp) 172 { 173 174 if (ALI1543_LEGAL_LINK(link - 1)) { 175 *clinkp = link - 1; 176 return (0); 177 } 178 179 return (1); 180 } 181 182 int 183 ali1543_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) 184 { 185 struct piix_handle *ph = v; 186 pcireg_t reg; 187 int val; 188 189 if (ALI1543_LEGAL_LINK(clink) == 0) 190 return (1); 191 192 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG); 193 #ifdef DEBUG_1543 194 printf("ali1543: PIRQ reg 0x%08x\n", reg); /* XXX debug */ 195 #endif /* DEBUG_1543 */ 196 val = ALI1543_PIRQ(reg, clink); 197 *irqp = (val == 0) ? 198 I386_PCI_INTERRUPT_LINE_NO_CONNECTION : val; 199 200 return (0); 201 } 202 203 int 204 ali1543_set_intr(pciintr_icu_handle_t v, int clink, int irq) 205 { 206 struct piix_handle *ph = v; 207 int shift, val; 208 pcireg_t reg; 209 210 if (ALI1543_LEGAL_LINK(clink) == 0 || ALI1543_LEGAL_IRQ(irq) == 0) 211 return (1); 212 213 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG); 214 ali1543_get_intr(v, clink, &val); 215 shift = ALI1543_INTR_PIRQ_SHIFT(clink); 216 reg &= ~(0x0f << shift); 217 reg |= (ali1543_intr_shuffle_set[irq] << shift); 218 pci_conf_write(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG, reg); 219 if (ali1543_get_intr(v, clink, &val) != 0 || val != irq) 220 return (1); 221 222 return (0); 223 } 224