opti82c558.c revision 1.8
1 /* $NetBSD: opti82c558.c,v 1.8 2006/11/16 01:32:39 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1999, by UCHIYAMA Yasushi 42 * All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. The name of the developer may NOT be used to endorse or promote products 50 * derived from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 */ 64 65 /* 66 * Support for the Opti 82c558 PCI-ISA bridge interrupt controller. 67 */ 68 69 #include <sys/cdefs.h> 70 __KERNEL_RCSID(0, "$NetBSD: opti82c558.c,v 1.8 2006/11/16 01:32:39 christos Exp $"); 71 72 #include <sys/param.h> 73 #include <sys/systm.h> 74 #include <sys/device.h> 75 #include <sys/malloc.h> 76 77 #include <machine/intr.h> 78 #include <machine/bus.h> 79 80 #include <dev/pci/pcivar.h> 81 #include <dev/pci/pcireg.h> 82 #include <dev/pci/pcidevs.h> 83 84 #include <i386/pci/pci_intr_fixup.h> 85 #include <i386/pci/opti82c558reg.h> 86 87 int opti82c558_getclink(pciintr_icu_handle_t, int, int *); 88 int opti82c558_get_intr(pciintr_icu_handle_t, int, int *); 89 int opti82c558_set_intr(pciintr_icu_handle_t, int, int); 90 int opti82c558_get_trigger(pciintr_icu_handle_t, int, int *); 91 int opti82c558_set_trigger(pciintr_icu_handle_t, int, int); 92 93 const struct pciintr_icu opti82c558_pci_icu = { 94 opti82c558_getclink, 95 opti82c558_get_intr, 96 opti82c558_set_intr, 97 opti82c558_get_trigger, 98 opti82c558_set_trigger, 99 }; 100 101 struct opti82c558_handle { 102 pci_chipset_tag_t ph_pc; 103 pcitag_t ph_tag; 104 }; 105 106 static const int viper_pirq_decode[] = { 107 -1, 5, 9, 10, 11, 12, 14, 15 108 }; 109 110 static const int viper_pirq_encode[] = { 111 -1, /* 0 */ 112 -1, /* 1 */ 113 -1, /* 2 */ 114 -1, /* 3 */ 115 -1, /* 4 */ 116 VIPER_PIRQ_5, /* 5 */ 117 -1, /* 6 */ 118 -1, /* 7 */ 119 -1, /* 8 */ 120 VIPER_PIRQ_9, /* 9 */ 121 VIPER_PIRQ_10, /* 10 */ 122 VIPER_PIRQ_11, /* 11 */ 123 VIPER_PIRQ_12, /* 12 */ 124 -1, /* 13 */ 125 VIPER_PIRQ_14, /* 14 */ 126 VIPER_PIRQ_15, /* 15 */ 127 }; 128 129 int 130 opti82c558_init(pci_chipset_tag_t pc, bus_space_tag_t iot, 131 pcitag_t tag, pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) 132 { 133 struct opti82c558_handle *ph; 134 135 ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT); 136 if (ph == NULL) 137 return (1); 138 139 ph->ph_pc = pc; 140 ph->ph_tag = tag; 141 142 *ptagp = &opti82c558_pci_icu; 143 *phandp = ph; 144 return (0); 145 } 146 147 int 148 opti82c558_getclink(pciintr_icu_handle_t v, int link, int *clinkp) 149 { 150 151 if (VIPER_LEGAL_LINK(link - 1)) { 152 *clinkp = link - 1; 153 return (0); 154 } 155 156 return (1); 157 } 158 159 int 160 opti82c558_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) 161 { 162 struct opti82c558_handle *ph = v; 163 pcireg_t reg; 164 int val; 165 166 if (VIPER_LEGAL_LINK(clink) == 0) 167 return (1); 168 169 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ); 170 val = VIPER_PIRQ(reg, clink); 171 *irqp = (val == VIPER_PIRQ_NONE) ? 172 X86_PCI_INTERRUPT_LINE_NO_CONNECTION : viper_pirq_decode[val]; 173 174 return (0); 175 } 176 177 int 178 opti82c558_set_intr(pciintr_icu_handle_t v, int clink, int irq) 179 { 180 struct opti82c558_handle *ph = v; 181 int shift; 182 pcireg_t reg; 183 184 if (VIPER_LEGAL_LINK(clink) == 0 || VIPER_LEGAL_IRQ(irq) == 0) 185 return (1); 186 187 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ); 188 shift = VIPER_PIRQ_SELECT_SHIFT * clink; 189 reg &= ~(VIPER_PIRQ_SELECT_MASK << shift); 190 reg |= (viper_pirq_encode[irq] << shift); 191 pci_conf_write(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ, reg); 192 193 return (0); 194 } 195 196 int 197 opti82c558_get_trigger(pciintr_icu_handle_t v, int irq, int *triggerp) 198 { 199 struct opti82c558_handle *ph = v; 200 pcireg_t reg; 201 202 if (VIPER_LEGAL_IRQ(irq) == 0) { 203 /* ISA IRQ? */ 204 *triggerp = IST_EDGE; 205 return (0); 206 } 207 208 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ); 209 if ((reg >> (VIPER_CFG_TRIGGER_SHIFT + viper_pirq_encode[irq])) & 1) 210 *triggerp = IST_LEVEL; 211 else 212 *triggerp = IST_EDGE; 213 214 return (0); 215 } 216 217 int 218 opti82c558_set_trigger(pciintr_icu_handle_t v, int irq, int trigger) 219 { 220 struct opti82c558_handle *ph = v; 221 int shift; 222 pcireg_t reg; 223 224 if (VIPER_LEGAL_IRQ(irq) == 0) { 225 /* ISA IRQ? */ 226 return ((trigger != IST_LEVEL) ? 0 : 1); 227 } 228 229 reg = pci_conf_read(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ); 230 shift = (VIPER_CFG_TRIGGER_SHIFT + viper_pirq_encode[irq]); 231 if (trigger == IST_LEVEL) 232 reg |= (1 << shift); 233 else 234 reg &= ~(1 << shift); 235 pci_conf_write(ph->ph_pc, ph->ph_tag, VIPER_CFG_PIRQ, reg); 236 237 return (0); 238 } 239
Indexes created Mon Sep 29 21:09:56 GMT 2025