1 /* $NetBSD: via8231.c,v 1.5 2014/01/25 21:11:03 christos Exp $ */ 2 /* OpenBSD: via8231.c,v 1.6 2005/10/27 16:41:06 mickey Exp */ 3 4 /*- 5 * Copyright (c) 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 /* 34 * Copyright (c) 2005, by Michael Shalayeff 35 * Copyright (c) 2003, by Matthew Gream 36 * Copyright (c) 1999, by UCHIYAMA Yasushi 37 * All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. The name of the developer may NOT be used to endorse or promote products 45 * derived from this software without specific prior written permission. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 48 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 50 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 51 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 52 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 53 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 54 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 55 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 56 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 57 * SUCH DAMAGE. 58 */ 59 60 /* 61 * Support for the VIA Technologies Inc. VIA VT823[1357] PCI to ISA Bridge 62 * Based upon documentation: 63 * 1. VIA VT8231 South Bridge, Revision 1.85 (March 11, 2002), pg 73 64 * 2. VIA VT8237R South Bridge, Revision 2.06 (December 15, 2004), pg 100 65 * Derived from amd756.c 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: via8231.c,v 1.5 2014/01/25 21:11:03 christos Exp $"); 70 71 #include <sys/param.h> 72 #include <sys/systm.h> 73 #include <sys/device.h> 74 #include <sys/malloc.h> 75 76 #include <machine/intr.h> 77 #include <sys/bus.h> 78 79 #include <dev/pci/pcivar.h> 80 #include <dev/pci/pcireg.h> 81 #include <dev/pci/pcidevs.h> 82 83 #include <i386/pci/pci_intr_fixup.h> 84 #include <i386/pci/via8231reg.h> 85 86 struct via8231_handle { 87 bus_space_tag_t ph_iot; 88 bus_space_handle_t ph_regs_ioh; 89 pci_chipset_tag_t ph_pc; 90 pcitag_t ph_tag; 91 int flags; 92 #define VT8237 0x0001 93 }; 94 95 int via8231_getclink(pciintr_icu_handle_t, int, int *); 96 int via8231_get_intr(pciintr_icu_handle_t, int, int *); 97 int via8231_set_intr(pciintr_icu_handle_t, int, int); 98 int via8231_get_trigger(pciintr_icu_handle_t, int, int *); 99 int via8231_set_trigger(pciintr_icu_handle_t, int, int); 100 #ifdef VIA8231_DEBUG 101 static void via8231_pir_dump(const char*, struct via8231_handle *); 102 #endif 103 104 const struct pciintr_icu via8231_pci_icu = { 105 via8231_getclink, 106 via8231_get_intr, 107 via8231_set_intr, 108 via8231_get_trigger, 109 via8231_set_trigger, 110 }; 111 112 struct mask_shft_pair { 113 int mask; 114 int shft; 115 }; 116 117 static const struct mask_shft_pair via8231_routing_cnfg[VIA8231_LINK_MAX+1] = { 118 { 0x0f, 0+4 }, /*PINTA#*/ 119 { 0x0f, 8+0 }, /*PINTB#*/ 120 { 0x0f, 8+4 }, /*PINTC#*/ 121 { 0x0f, 16+4 } /*PINTD#*/ 122 }; 123 124 #define VIA8231_GET_TRIGGER_CNFG(reg, pirq) \ 125 ((reg) & (1 << (3 - (clink & 3)))) 126 #define VIA8231_SET_TRIGGER_CNFG(reg, clink, cfg) \ 127 (((reg) & ~(1 << (3 - (clink & 3)))) | ((cfg) << (3 - (clink & 3)))) 128 129 #define VIA8231_GET_ROUTING_CNFG(reg, pirq) \ 130 (((reg) >> via8231_routing_cnfg[(pirq)].shft) & \ 131 via8231_routing_cnfg[(pirq)].mask) 132 133 #define VIA8231_SET_ROUTING_CNFG(reg, pirq, cfg) \ 134 (((reg) & ~(via8231_routing_cnfg[(pirq)].mask << \ 135 via8231_routing_cnfg[(pirq)].shft)) | \ 136 (((cfg) & via8231_routing_cnfg[(pirq)].mask) << \ 137 via8231_routing_cnfg[(pirq)].shft)) 138 139 int 140 via8231_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, 141 pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) 142 { 143 struct via8231_handle *ph; 144 pcireg_t id; 145 146 ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT); 147 if (ph == NULL) 148 return (1); 149 150 ph->ph_iot = iot; 151 ph->ph_pc = pc; 152 ph->ph_tag = tag; 153 id = pci_conf_read(pc, tag, PCI_ID_REG); 154 ph->flags = PCI_VENDOR(id) == PCI_VENDOR_VIATECH && 155 PCI_PRODUCT(id) == PCI_PRODUCT_VIATECH_VT8231? 0 : VT8237; 156 157 *ptagp = &via8231_pci_icu; 158 *phandp = ph; 159 160 #ifdef VIA8231_DEBUG 161 via8231_pir_dump("via8231_init", ph); 162 #endif 163 164 return 0; 165 } 166 167 int 168 via8231_getclink(pciintr_icu_handle_t v, int link, int *clinkp) 169 { 170 struct via8231_handle *ph = v; 171 172 if ((ph->flags & VT8237) && !VIA8237_LINK_LEGAL(link - 1)) 173 return (1); 174 175 if (!(ph->flags & VT8237) && !VIA8231_LINK_LEGAL(link - 1)) 176 return (1); 177 178 *clinkp = link - 1; 179 return (0); 180 } 181 182 int 183 via8231_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) 184 { 185 struct via8231_handle *ph = v; 186 int reg, val; 187 188 if (VIA8237_LINK_LEGAL(clink) == 0) 189 return (1); 190 191 if (VIA8231_LINK_LEGAL(clink)) { 192 reg = VIA8231_GET_ROUTING(ph); 193 val = VIA8231_GET_ROUTING_CNFG(reg, clink); 194 } else { 195 reg = VIA8237_GET_ROUTING(ph); 196 val = (reg >> ((clink & 3) * 4)) & 0xf; 197 } 198 199 *irqp = (val == VIA8231_ROUTING_CNFG_DISABLED) ? 200 X86_PCI_INTERRUPT_LINE_NO_CONNECTION : val; 201 202 return (0); 203 } 204 205 int 206 via8231_set_intr(pciintr_icu_handle_t v, int clink, int irq) 207 { 208 struct via8231_handle *ph = v; 209 int reg; 210 211 if (VIA8237_LINK_LEGAL(clink) == 0 || VIA8231_PIRQ_LEGAL(irq) == 0) 212 return (1); 213 214 #ifdef VIA8231_DEBUG 215 printf("via8231_set_intr: link(%02x) --> irq(%02x)\n", clink, irq); 216 via8231_pir_dump("via8231_set_intr: ", ph); 217 #endif 218 219 if (VIA8231_LINK_LEGAL(clink)) { 220 reg = VIA8231_GET_ROUTING(ph); 221 VIA8231_SET_ROUTING(ph, 222 VIA8231_SET_ROUTING_CNFG(reg, clink, irq)); 223 } else { 224 reg = VIA8237_GET_ROUTING(ph); 225 VIA8237_SET_ROUTING(ph, (reg & ~(0xf << (clink & 3))) | 226 ((irq & 0xf) << (clink & 3))); 227 } 228 229 return (0); 230 } 231 232 int 233 via8231_get_trigger(pciintr_icu_handle_t v, int irq, int *triggerp) 234 { 235 struct via8231_handle *ph = v; 236 int reg, clink, m, pciirq = 0; /* XXX: GCC */ 237 238 if (VIA8231_PIRQ_LEGAL(irq) == 0) 239 return (1); 240 241 m = ph->flags & VT8237? VIA8237_LINK_MAX : VIA8231_LINK_MAX; 242 for (clink = 0; clink <= m; clink++) { 243 via8231_get_intr(v, clink, &pciirq); 244 if (pciirq == irq) { 245 reg = VIA8231_LINK_LEGAL(clink)? 246 VIA8231_GET_TRIGGER(ph): 247 VIA8237_GET_TRIGGER(ph); 248 *triggerp = VIA8231_GET_TRIGGER_CNFG(reg, clink)? 249 IST_EDGE : IST_LEVEL; 250 return (0); 251 } 252 } 253 254 return (1); 255 } 256 257 int 258 via8231_set_trigger(pciintr_icu_handle_t v, int irq, int trigger) 259 { 260 struct via8231_handle *ph = v; 261 int reg, clink, pciirq; 262 263 if (VIA8231_PIRQ_LEGAL(irq) == 0 || VIA8231_TRIG_LEGAL(trigger) == 0) 264 return (1); 265 266 #ifdef VIA8231_DEBUG 267 printf("via8231_set_trig: irq(%02x) --> trig(%02x)\n", irq, trigger); 268 via8231_pir_dump("via8231_set_trig: ", ph); 269 #endif 270 271 for (clink = 0; clink <= VIA8231_LINK_MAX; clink++) { 272 via8231_get_intr(v, clink, &pciirq); 273 if (pciirq == irq) { 274 reg = VIA8231_LINK_LEGAL(clink)? 275 VIA8231_GET_TRIGGER(ph): 276 VIA8237_GET_TRIGGER(ph); 277 switch (trigger) { 278 case IST_LEVEL: 279 reg = VIA8231_SET_TRIGGER_CNFG(reg, clink, 280 VIA8231_TRIGGER_CNFG_LEVEL); 281 break; 282 case IST_EDGE: 283 reg = VIA8231_SET_TRIGGER_CNFG(reg, clink, 284 VIA8231_TRIGGER_CNFG_EDGE); 285 break; 286 default: 287 return (1); 288 } 289 if (VIA8231_LINK_LEGAL(clink)) 290 VIA8231_SET_TRIGGER(ph, reg); 291 else 292 VIA8237_SET_TRIGGER(ph, reg); 293 return (0); 294 } 295 } 296 297 return (1); 298 } 299 300 #ifdef VIA8231_DEBUG 301 static void 302 via8231_pir_dump(const char *m, struct via8231_handle *ph) 303 { 304 int a, b; 305 306 a = VIA8231_GET_TRIGGER(ph); 307 b = VIA8231_GET_ROUTING(ph); 308 309 printf("%s STATE: trigger(%02x), routing(%08x)\n", m, a, b); 310 } 311 #endif 312
Indexes created Sun Sep 21 14:09:52 GMT 2025