1 /* $OpenBSD: ali1543.c,v 1.4 2014/09/14 14:17:23 jsg 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 96 #include <machine/intr.h> 97 #include <machine/bus.h> 98 99 #include <dev/pci/pcivar.h> 100 #include <dev/pci/pcireg.h> 101 #include <dev/pci/pcidevs.h> 102 103 #include <i386/pci/pcibiosvar.h> 104 #include <i386/pci/piixvar.h> 105 106 107 int ali1543_getclink (pciintr_icu_handle_t, int, int *); 108 int ali1543_get_intr (pciintr_icu_handle_t, int, int *); 109 int ali1543_set_intr (pciintr_icu_handle_t, int, int); 110 111 112 const struct pciintr_icu ali1543_icu = { 113 ali1543_getclink, 114 ali1543_get_intr, 115 ali1543_set_intr, 116 piix_get_trigger, 117 piix_set_trigger, 118 }; 119 120 121 /* 122 * Linux source code (linux/arch/i386/kernel/pci-irq.c) says that the 123 * irq order of ALi PCI ICU is shuffled. 124 */ 125 const static int ali1543_intr_shuffle_get[16] = { 126 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15 127 }; 128 const static int ali1543_intr_shuffle_set[16] = { 129 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15 130 }; 131 132 #define ALI1543_IRQ_MASK 0xdefa 133 134 #define ALI1543_LEGAL_LINK(link) (((link) >= 0) && ((link) <= 7)) 135 #define ALI1543_LEGAL_IRQ(irq) ((1 << (irq)) & ALI1543_IRQ_MASK) 136 137 #define ALI1543_INTR_CFG_REG 0x48 138 139 #define ALI1543_INTR_PIRQA_SHIFT 0 140 #define ALI1543_INTR_PIRQA_MASK 0x0000000f 141 #define ALI1543_INTR_PIRQB_SHIFT 4 142 #define ALI1543_INTR_PIRQB_MASK 0x000000f0 143 #define ALI1543_INTR_PIRQC_SHIFT 8 144 #define ALI1543_INTR_PIRQC_MASK 0x00000f00 145 #define ALI1543_INTR_PIRQD_SHIFT 12 146 #define ALI1543_INTR_PIRQD_MASK 0x0000f000 147 148 #define ALI1543_INTR_PIRQ_SHIFT(clink) ((clink)*4) 149 #define ALI1543_INTR_PIRQ_IRQ(reg, clink) \ 150 (((reg) >> ((clink)*4)) & 0x0f) 151 #define ALI1543_PIRQ(reg, clink) \ 152 ali1543_intr_shuffle_get[ALI1543_INTR_PIRQ_IRQ((reg), (clink))] 153 154 155 int 156 ali1543_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, 157 pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) 158 { 159 160 if (piix_init(pc, iot, tag, ptagp, phandp) == 0) { 161 *ptagp = &ali1543_icu; 162 163 return (0); 164 } 165 166 return (1); 167 } 168 169 int 170 ali1543_getclink(pciintr_icu_handle_t v, int link, int *clinkp) 171 { 172 173 if (ALI1543_LEGAL_LINK(link - 1)) { 174 *clinkp = link - 1; 175 return (0); 176 } 177 178 return (1); 179 } 180 181 int 182 ali1543_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) 183 { 184 struct piix_handle *ph = v; 185 pcireg_t reg; 186 int val; 187 188 if (ALI1543_LEGAL_LINK(clink) == 0) 189 return (1); 190 191 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG); 192 #ifdef DEBUG_1543 193 printf("ali1543: PIRQ reg 0x%08x\n", reg); /* XXX debug */ 194 #endif /* DEBUG_1543 */ 195 val = ALI1543_PIRQ(reg, clink); 196 *irqp = (val == 0) ? 197 I386_PCI_INTERRUPT_LINE_NO_CONNECTION : val; 198 199 return (0); 200 } 201 202 int 203 ali1543_set_intr(pciintr_icu_handle_t v, int clink, int irq) 204 { 205 struct piix_handle *ph = v; 206 int shift, val; 207 pcireg_t reg; 208 209 if (ALI1543_LEGAL_LINK(clink) == 0 || ALI1543_LEGAL_IRQ(irq) == 0) 210 return (1); 211 212 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG); 213 ali1543_get_intr(v, clink, &val); 214 shift = ALI1543_INTR_PIRQ_SHIFT(clink); 215 reg &= ~(0x0f << shift); 216 reg |= (ali1543_intr_shuffle_set[irq] << shift); 217 pci_conf_write(ph->ph_pc, ph->ph_tag, ALI1543_INTR_CFG_REG, reg); 218 if (ali1543_get_intr(v, clink, &val) != 0 || val != irq) 219 return (1); 220 221 return (0); 222 } 223