isa_machdep.c revision 1.26
1/* $NetBSD: isa_machdep.c,v 1.26 2002/09/27 20:32:21 thorpej 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 UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#include "opt_vr41xx.h" 40 41#include <sys/param.h> 42#include <sys/systm.h> 43#include <sys/reboot.h> 44 45#include <dev/isa/isavar.h> 46#include <dev/isa/isareg.h> 47 48#include <machine/platid.h> 49#include <machine/platid_mask.h> 50#include <machine/bus.h> 51#include <machine/bus_space_hpcmips.h> 52#include <machine/debug.h> 53 54#include <dev/hpc/hpciovar.h> 55 56#include <hpcmips/vr/vripif.h> 57 58#include "locators.h" 59 60#define VRISADEBUG 61 62#ifdef VRISADEBUG 63#ifndef VRISADEBUG_CONF 64#define VRISADEBUG_CONF 0 65#endif /* VRISADEBUG_CONF */ 66int vrisa_debug = VRISADEBUG_CONF; 67#define DPRINTF(arg) if (vrisa_debug) printf arg; 68#define DBITDISP(mask) if (vrisa_debug) dbg_bit_print(mask); 69#define VPRINTF(arg) if (bootverbose || vrisa_debug) printf arg; 70#else /* VRISADEBUG */ 71#define DPRINTF(arg) 72#define DBITDISP(mask) 73#define VPRINTF(arg) if (bootverbose) printf arg; 74#endif /* VRISADEBUG */ 75 76/* 77 * intrrupt no. encoding: 78 * 79 * 0x0000000f ISA IRQ# 80 * 0x00ff0000 GPIO port# 81 * 0x01000000 interrupt signal hold/through (1:hold/0:though) 82 * 0x02000000 interrupt detection level (1:low /0:high ) 83 * 0x04000000 interrupt detection trigger (1:edge/0:level ) 84 */ 85#define INTR_IRQ(i) (((i)>> 0) & 0x0f) 86#define INTR_PORT(i) (((i)>>16) & 0xff) 87#define INTR_MODE(i) (((i)>>24) & 0x07) 88#define INTR_NIRQS 16 89 90int vrisabprint(void *, const char *); 91int vrisabmatch(struct device *, struct cfdata *, void *); 92void vrisabattach(struct device *, struct device *, void *); 93 94struct vrisab_softc { 95 struct device sc_dev; 96 hpcio_chip_t sc_hc; 97 int sc_intr_map[INTR_NIRQS]; /* ISA <-> GIU inerrupt line mapping */ 98 struct hpcmips_isa_chipset sc_isa_ic; 99}; 100 101const struct cfattach vrisab_ca = { 102 sizeof(struct vrisab_softc), vrisabmatch, vrisabattach 103}; 104 105#ifdef DEBUG_FIND_PCIC 106#include <mips/cpuregs.h> 107#warning DEBUG_FIND_PCIC 108static void __find_pcic(void); 109#endif 110 111#ifdef DEBUG_FIND_COMPORT 112#include <mips/cpuregs.h> 113#include <dev/ic/ns16550reg.h> 114#include <dev/ic/comreg.h> 115#warning DEBUG_FIND_COMPORT 116static void __find_comport(void); 117#endif 118 119int 120vrisabmatch(struct device *parent, struct cfdata *match, void *aux) 121{ 122 struct hpcio_attach_args *haa = aux; 123 platid_mask_t mask; 124 int n; 125 126 if (strcmp(haa->haa_busname, match->cf_name)) 127 return (0); 128 129 if (match->cf_loc[HPCIOIFCF_PLATFORM] == HPCIOIFCF_PLATFORM_DEFAULT) 130 return (1); 131 132 mask = PLATID_DEREF(match->cf_loc[HPCIOIFCF_PLATFORM]); 133 if ((n = platid_match(&platid, &mask)) != 0) 134 return (n + 2); 135 136 return (0); 137} 138 139void 140vrisabattach(struct device *parent, struct device *self, void *aux) 141{ 142 struct hpcio_attach_args *haa = aux; 143 struct vrisab_softc *sc = (void*)self; 144 struct isabus_attach_args iba; 145 struct bus_space_tag_hpcmips *iot, *memt; 146 bus_addr_t offset; 147 int i; 148 149 sc->sc_hc = (*haa->haa_getchip)(haa->haa_sc, VRIP_IOCHIP_VRGIU); 150 sc->sc_isa_ic.ic_sc = sc; 151 152 iba.iba_busname = "isa"; 153 iba.iba_ic = &sc->sc_isa_ic; 154 iba.iba_dmat = 0; /* XXX not yet */ 155 156 /* Allocate ISA memory space */ 157 memt = hpcmips_alloc_bus_space_tag(); 158 offset = sc->sc_dev.dv_cfdata->cf_loc[VRISABIFCF_ISAMEMOFFSET]; 159 hpcmips_init_bus_space(memt, 160 (struct bus_space_tag_hpcmips *)haa->haa_iot, "ISA mem", 161 VR_ISA_MEM_BASE + offset, VR_ISA_MEM_SIZE - offset); 162 iba.iba_memt = &memt->bst; 163 164 /* Allocate ISA port space */ 165 iot = hpcmips_alloc_bus_space_tag(); 166 offset = sc->sc_dev.dv_cfdata->cf_loc[VRISABIFCF_ISAPORTOFFSET]; 167 hpcmips_init_bus_space(iot, 168 (struct bus_space_tag_hpcmips *)haa->haa_iot, "ISA port", 169 VR_ISA_PORT_BASE + offset, VR_ISA_PORT_SIZE - offset); 170 iba.iba_iot = &iot->bst; 171 172#ifdef DEBUG_FIND_PCIC 173#warning DEBUG_FIND_PCIC 174 __find_pcic(); 175#else 176 /* Initialize ISA IRQ <-> GPIO mapping */ 177 for (i = 0; i < INTR_NIRQS; i++) 178 sc->sc_intr_map[i] = -1; 179 printf(": ISA port %#x-%#x mem %#x-%#x\n", 180 iot->base, iot->base + iot->size, 181 memt->base, memt->base + memt->size); 182 config_found(self, &iba, vrisabprint); 183#endif 184 185#ifdef DEBUG_FIND_COMPORT 186#warning DEBUG_FIND_COMPORT 187 __find_comport(); 188#endif 189} 190 191int 192vrisabprint(void *aux, const char *pnp) 193{ 194 if (pnp) 195 return (QUIET); 196 197 return (UNCONF); 198} 199 200void 201isa_attach_hook(struct device *parent, struct device *self, 202 struct isabus_attach_args *iba) 203{ 204 205} 206 207const struct evcnt * 208isa_intr_evcnt(isa_chipset_tag_t ic, int irq) 209{ 210 211 /* XXX for now, no evcnt parent reported */ 212 return (NULL); 213} 214 215void * 216isa_intr_establish(isa_chipset_tag_t ic, int intr, int type, int level, 217 int (*ih_fun)(void*), void *ih_arg) 218{ 219 struct vrisab_softc *sc = ic->ic_sc; 220 int port, irq, mode; 221 222 static int intr_modes[8] = { 223 HPCIO_INTR_LEVEL_HIGH_THROUGH, 224 HPCIO_INTR_LEVEL_HIGH_HOLD, 225 HPCIO_INTR_LEVEL_LOW_THROUGH, 226 HPCIO_INTR_LEVEL_LOW_HOLD, 227 HPCIO_INTR_EDGE_THROUGH, 228 HPCIO_INTR_EDGE_HOLD, 229 HPCIO_INTR_EDGE_THROUGH, 230 HPCIO_INTR_EDGE_HOLD, 231 }; 232#ifdef VRISADEBUG 233 static char* intr_mode_names[8] = { 234 "level high through", 235 "level high hold", 236 "level low through", 237 "level low hold", 238 "edge through", 239 "edge hold", 240 "edge through", 241 "edge hold", 242 }; 243#endif /* VRISADEBUG */ 244 /* 245 * ISA IRQ <-> GPIO port mapping 246 */ 247 irq = INTR_IRQ(intr); 248 if (sc->sc_intr_map[irq] != -1) { 249 /* already mapped */ 250 intr = sc->sc_intr_map[irq]; 251 } else { 252 /* not mapped yet */ 253 sc->sc_intr_map[irq] = intr; /* Register it */ 254 } 255 mode = INTR_MODE(intr); 256 port = INTR_PORT(intr); 257 258 VPRINTF(("ISA IRQ %d -> %s port %d, %s\n", 259 irq, sc->sc_hc->hc_name, port, intr_mode_names[mode])); 260 261 /* Call Vr routine */ 262 return (hpcio_intr_establish(sc->sc_hc, port, intr_modes[mode], 263 ih_fun, ih_arg)); 264} 265 266void 267isa_intr_disestablish(ic, arg) 268 isa_chipset_tag_t ic; 269 void *arg; 270{ 271 struct vrisab_softc *sc = ic->ic_sc; 272 /* Call Vr routine */ 273 hpcio_intr_disestablish(sc->sc_hc, arg); 274} 275 276int 277isa_intr_alloc(isa_chipset_tag_t ic, int mask, int type, int *irq) 278{ 279 /* XXX not coded yet. this is temporary XXX */ 280 DPRINTF(("isa_intr_alloc:")); 281 DBITDISP(mask); 282 *irq = (ffs(mask) -1); /* XXX */ 283 284 return (0); 285} 286 287#ifdef DEBUG_FIND_PCIC 288#warning DEBUG_FIND_PCIC 289static void 290__find_pcic(void) 291{ 292 int i, j, step, found; 293 u_int32_t addr; 294 u_int8_t reg; 295 int __read_revid (u_int32_t port) 296 { 297 addr = MIPS_PHYS_TO_KSEG1(i + port); 298 printf("%#x\r", i); 299 for (found = 0, j = 0; j < 0x100; j += 0x40) { 300 *((volatile u_int8_t *)addr) = j; 301 reg = *((volatile u_int8_t *)(addr + 1)); 302#ifdef DEBUG_FIND_PCIC_I82365SL_ONLY 303 if (reg == 0x82 || reg == 0x83) { 304#else 305 if ((reg & 0xc0) == 0x80) { 306#endif 307 found++; 308 } 309 if (found) 310 printf("\nfound %d socket at %#x" 311 "(base from %#x)\n", found, addr, 312 i + port - VR_ISA_PORT_BASE); 313 } 314 } 315 step = 0x1000000; 316 printf("\nFinding PCIC. Trying ISA port %#x-%#x step %#x\n", 317 VR_ISA_PORT_BASE, VR_ISA_PORT_BASE + VR_ISA_PORT_SIZE, step); 318 for (i = VR_ISA_PORT_BASE; i < VR_ISA_PORT_BASE+VR_ISA_PORT_SIZE; 319 i+= step) { 320 __read_revid (0x3e0); 321 __read_revid (0x3e2); 322 } 323} 324#endif /* DEBUG_FIND_PCIC */ 325 326 327#ifdef DEBUG_FIND_COMPORT 328#warning DEBUG_FIND_COMPORT 329 330static int probe_com(u_int32_t); 331 332static int 333probe_com(u_int32_t port_addr) 334{ 335 u_int32_t addr; 336 u_int8_t ubtmp1, ubtmp2; 337 338 addr = MIPS_PHYS_TO_KSEG1(port_addr); 339 340 *((volatile u_int8_t *)(addr + com_cfcr)) = LCR_8BITS; 341 *((volatile u_int8_t *)(addr + com_iir)) = 0; 342 343 ubtmp1 = *((volatile u_int8_t *)(addr + com_cfcr)); 344 ubtmp2 = *((volatile u_int8_t *)(addr + com_iir)); 345 346 if ((ubtmp1 != LCR_8BITS) || ((ubtmp2 & 0x38) != 0)) { 347 return (0); 348 } 349 350 return (1); 351} 352 353static void 354__find_comport() 355{ 356 int found; 357 u_int32_t port, step; 358 359 found = 0; 360 step = 0x08; 361 362 printf("Searching COM port. Trying ISA port %#x-%#x step %#x\n", 363 VR_ISA_PORT_BASE, VR_ISA_PORT_BASE + VR_ISA_PORT_SIZE - 1, step ); 364 365 for (port = VR_ISA_PORT_BASE; 366 port < (VR_ISA_PORT_BASE + VR_ISA_PORT_SIZE); port += step){ 367 if (probe_com(port)) { 368 found++; 369 printf("found %d at %#x\n", found, port); 370 } 371 } 372} 373#endif /* DEBUG_FIND_COMPORT */ 374