1 /* $NetBSD: vrc4172pci.c,v 1.5 2002/05/16 01:01:36 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 TAKEMURA Shin 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/device.h> 35 36 #include <machine/bus.h> 37 #include <machine/bus_space_hpcmips.h> 38 #include <machine/bus_dma_hpcmips.h> 39 #include <machine/config_hook.h> 40 #include <machine/platid.h> 41 #include <machine/platid_mask.h> 42 43 #include <dev/pci/pcivar.h> 44 #include <dev/pci/pcidevs.h> 45 #include <dev/pci/pciidereg.h> 46 47 #include <hpcmips/vr/icureg.h> 48 #include <hpcmips/vr/vripif.h> 49 #include <hpcmips/vr/vrc4172pcireg.h> 50 51 #include "pci.h" 52 #include "opt_vrc4172pci.h" 53 54 #ifdef DEBUG 55 #define DPRINTF(args) printf args 56 #else 57 #define DPRINTF(args) while (0) {} 58 #endif 59 60 struct vrc4172pci_softc { 61 struct device sc_dev; 62 63 bus_space_tag_t sc_iot; 64 bus_space_handle_t sc_ioh; 65 66 struct hpcmips_pci_chipset sc_pc; 67 #ifdef VRC4172PCI_MCR700_SUPPORT 68 pcireg_t sc_fake_baseaddr; 69 hpcio_chip_t sc_iochip; 70 #if 0 71 hpcio_intr_handle_t sc_ih; 72 #endif 73 #endif /* VRC4172PCI_MCR700_SUPPORT */ 74 }; 75 76 static int vrc4172pci_match(struct device *, struct cfdata *, void *); 77 static void vrc4172pci_attach(struct device *, struct device *, void *); 78 #if NPCI > 0 79 static int vrc4172pci_print(void *, const char *); 80 #endif 81 static void vrc4172pci_attach_hook(struct device *, struct device *, 82 struct pcibus_attach_args *); 83 static int vrc4172pci_bus_maxdevs(pci_chipset_tag_t, int); 84 static int vrc4172pci_bus_devorder(pci_chipset_tag_t, int, char *); 85 static pcitag_t vrc4172pci_make_tag(pci_chipset_tag_t, int, int, int); 86 static void vrc4172pci_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, 87 int *, int *); 88 static pcireg_t vrc4172pci_conf_read(pci_chipset_tag_t, pcitag_t, int); 89 static void vrc4172pci_conf_write(pci_chipset_tag_t, pcitag_t, int, 90 pcireg_t); 91 static int vrc4172pci_intr_map(struct pci_attach_args *, 92 pci_intr_handle_t *); 93 static const char *vrc4172pci_intr_string(pci_chipset_tag_t,pci_intr_handle_t); 94 static const struct evcnt *vrc4172pci_intr_evcnt(pci_chipset_tag_t, 95 pci_intr_handle_t); 96 static void *vrc4172pci_intr_establish(pci_chipset_tag_t, 97 pci_intr_handle_t, int, int (*)(void *), void *); 98 static void vrc4172pci_intr_disestablish(pci_chipset_tag_t, void *); 99 #ifdef VRC4172PCI_MCR700_SUPPORT 100 #if 0 101 static int vrc4172pci_mcr700_intr(void *arg); 102 #endif 103 #endif 104 105 struct cfattach vrc4172pci_ca = { 106 sizeof(struct vrc4172pci_softc), vrc4172pci_match, vrc4172pci_attach 107 }; 108 109 static inline void 110 vrc4172pci_write(struct vrc4172pci_softc *sc, int offset, u_int32_t val) 111 { 112 113 bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val); 114 } 115 116 static inline u_int32_t 117 vrc4172pci_read(struct vrc4172pci_softc *sc, int offset) 118 { 119 u_int32_t res; 120 121 if (bus_space_peek(sc->sc_iot, sc->sc_ioh, offset, 4, &res) < 0) { 122 res = 0xffffffff; 123 } 124 125 return (res); 126 } 127 128 static int 129 vrc4172pci_match(struct device *parent, struct cfdata *match, void *aux) 130 { 131 132 return (1); 133 } 134 135 static void 136 vrc4172pci_attach(struct device *parent, struct device *self, void *aux) 137 { 138 struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)self; 139 pci_chipset_tag_t pc = &sc->sc_pc; 140 struct vrip_attach_args *va = aux; 141 #if NPCI > 0 142 struct pcibus_attach_args pba; 143 #endif 144 145 sc->sc_iot = va->va_iot; 146 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0, 147 &sc->sc_ioh)) { 148 printf(": couldn't map io space\n"); 149 return; 150 } 151 printf("\n"); 152 153 #ifdef VRC4172PCI_MCR700_SUPPORT 154 if (platid_match(&platid, &platid_mask_MACH_NEC_MCR_700) || 155 platid_match(&platid, &platid_mask_MACH_NEC_MCR_700A)) { 156 /* power USB controller on MC-R700 */ 157 sc->sc_iochip = va->va_gpio_chips[VRIP_IOCHIP_VRGIU]; 158 hpcio_portwrite(sc->sc_iochip, 45, 1); 159 sc->sc_fake_baseaddr = 0x0afe0000; 160 #if 0 161 sc->sc_ih = hpcio_intr_establish(sc->sc_iochip, 1, 162 HPCIO_INTR_EDGE|HPCIO_INTR_HOLD, 163 vrc4172pci_mcr700_intr, sc); 164 #endif 165 } 166 #endif /* VRC4172PCI_MCR700_SUPPORT */ 167 168 pc->pc_dev = &sc->sc_dev; 169 pc->pc_attach_hook = vrc4172pci_attach_hook; 170 pc->pc_bus_maxdevs = vrc4172pci_bus_maxdevs; 171 pc->pc_bus_devorder = vrc4172pci_bus_devorder; 172 pc->pc_make_tag = vrc4172pci_make_tag; 173 pc->pc_decompose_tag = vrc4172pci_decompose_tag; 174 pc->pc_conf_read = vrc4172pci_conf_read; 175 pc->pc_conf_write = vrc4172pci_conf_write; 176 pc->pc_intr_map = vrc4172pci_intr_map; 177 pc->pc_intr_string = vrc4172pci_intr_string; 178 pc->pc_intr_evcnt = vrc4172pci_intr_evcnt; 179 pc->pc_intr_establish = vrc4172pci_intr_establish; 180 pc->pc_intr_disestablish = vrc4172pci_intr_disestablish; 181 182 #if 0 183 { 184 int i; 185 186 for (i = 0; i < 2; i++) 187 printf("%s: ID_REG(0, 0, %d) = 0x%08x\n", 188 sc->sc_dev.dv_xname, i, 189 pci_conf_read(pc, pci_make_tag(pc, 0, 0, i), 190 PCI_ID_REG)); 191 } 192 #endif 193 194 #if NPCI > 0 195 memset(&pba, 0, sizeof(pba)); 196 pba.pba_busname = "pci"; 197 pba.pba_iot = sc->sc_iot; 198 pba.pba_memt = sc->sc_iot; 199 pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt; 200 pba.pba_bus = 0; 201 pba.pba_bridgetag = NULL; 202 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | 203 PCI_FLAGS_MRL_OKAY; 204 pba.pba_pc = pc; 205 206 config_found(self, &pba, vrc4172pci_print); 207 #endif 208 } 209 210 #if NPCI > 0 211 static int 212 vrc4172pci_print(void *aux, const char *pnp) 213 { 214 struct pcibus_attach_args *pba = aux; 215 216 if (pnp != NULL) 217 printf("%s at %s", pba->pba_busname, pnp); 218 else 219 printf(" bus %d", pba->pba_bus); 220 221 return (UNCONF); 222 } 223 #endif 224 225 void 226 vrc4172pci_attach_hook(struct device *parent, struct device *self, 227 struct pcibus_attach_args *pba) 228 { 229 230 return; 231 } 232 233 int 234 vrc4172pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 235 { 236 237 return (1); /* Vrc4172 has only one device */ 238 } 239 240 int 241 vrc4172pci_bus_devorder(pci_chipset_tag_t pc, int busno, char *devs) 242 { 243 int i; 244 245 *devs++ = 0; 246 for (i = 1; i < 32; i++) 247 *devs++ = -1; 248 249 return (1); 250 } 251 252 pcitag_t 253 vrc4172pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) 254 { 255 256 return ((bus << 16) | (device << 11) | (function << 8)); 257 } 258 259 void 260 vrc4172pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, 261 int *fp) 262 { 263 264 if (bp != NULL) 265 *bp = (tag >> 16) & 0xff; 266 if (dp != NULL) 267 *dp = (tag >> 11) & 0x1f; 268 if (fp != NULL) 269 *fp = (tag >> 8) & 0x07; 270 } 271 272 pcireg_t 273 vrc4172pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 274 { 275 struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)pc->pc_dev; 276 u_int32_t val; 277 278 #ifdef VRC4172PCI_MCR700_SUPPORT 279 if (sc->sc_fake_baseaddr != 0 && 280 tag == vrc4172pci_make_tag(pc, 0, 0, 1) && 281 reg == PCI_MAPREG_START) { 282 val = sc->sc_fake_baseaddr; 283 goto out; 284 } 285 #endif /* VRC4172PCI_MCR700_SUPPORT */ 286 287 tag |= VRC4172PCI_CONFADDR_CONFIGEN; 288 289 vrc4172pci_write(sc, VRC4172PCI_CONFAREG, tag | reg); 290 val = vrc4172pci_read(sc, VRC4172PCI_CONFDREG); 291 292 #ifdef VRC4172PCI_MCR700_SUPPORT 293 out: 294 #endif 295 DPRINTF(("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 296 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, val)); 297 298 return (val); 299 } 300 301 void 302 vrc4172pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, 303 pcireg_t data) 304 { 305 struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)pc->pc_dev; 306 307 DPRINTF(("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 308 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, (u_int32_t)data)); 309 310 #ifdef VRC4172PCI_MCR700_SUPPORT 311 if (sc->sc_fake_baseaddr != 0 && 312 tag == vrc4172pci_make_tag(pc, 0, 0, 1) && 313 reg == PCI_MAPREG_START) { 314 sc->sc_fake_baseaddr = (data & 0xfffff000); 315 return; 316 } 317 #endif /* VRC4172PCI_MCR700_SUPPORT */ 318 319 tag |= VRC4172PCI_CONFADDR_CONFIGEN; 320 321 vrc4172pci_write(sc, VRC4172PCI_CONFAREG, tag | reg); 322 vrc4172pci_write(sc, VRC4172PCI_CONFDREG, data); 323 } 324 325 int 326 vrc4172pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 327 { 328 pci_chipset_tag_t pc = pa->pa_pc; 329 pcitag_t intrtag = pa->pa_intrtag; 330 int bus, dev, func; 331 332 pci_decompose_tag(pc, intrtag, &bus, &dev, &func); 333 DPRINTF(("%s(%d, %d, %d): line = %d, pin = %d\n", pc->pc_dev->dv_xname, 334 bus, dev, func, pa->pa_intrline, pa->pa_intrpin)); 335 336 *ihp = CONFIG_HOOK_PCIINTR_ID(bus, dev, func); 337 338 return (0); 339 } 340 341 const char * 342 vrc4172pci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih) 343 { 344 static char irqstr[sizeof("pciintr") + 16]; 345 346 snprintf(irqstr, sizeof(irqstr), "pciintr %d:%d:%d", 347 CONFIG_HOOK_PCIINTR_BUS((int)ih), 348 CONFIG_HOOK_PCIINTR_DEVICE((int)ih), 349 CONFIG_HOOK_PCIINTR_FUNCTION((int)ih)); 350 351 return (irqstr); 352 } 353 354 const struct evcnt * 355 vrc4172pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 356 { 357 358 return (NULL); 359 } 360 361 void * 362 vrc4172pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, 363 int level, int (*func)(void *), void *arg) 364 { 365 366 if (ih == -1) 367 return (NULL); 368 DPRINTF(("vrc4172pci_intr_establish: %lx\n", ih)); 369 370 return (config_hook(CONFIG_HOOK_PCIINTR, ih, CONFIG_HOOK_EXCLUSIVE, 371 (int (*)(void *, int, long, void *))func, arg)); 372 } 373 374 void 375 vrc4172pci_intr_disestablish(pci_chipset_tag_t pc, void *cookie) 376 { 377 378 DPRINTF(("vrc4172pci_intr_disestablish: %p\n", cookie)); 379 config_unhook(cookie); 380 } 381 382 #ifdef VRC4172PCI_MCR700_SUPPORT 383 #if 0 384 int 385 vrc4172pci_mcr700_intr(void *arg) 386 { 387 struct vrc4172pci_softc *sc = arg; 388 389 hpcio_intr_clear(sc->sc_iochip, sc->sc_ih); 390 printf("USB port %s\n", hpcio_portread(sc->sc_iochip, 1) ? "ON" : "OFF"); 391 hpcio_portwrite(sc->sc_iochip, 45, hpcio_portread(sc->sc_iochip, 1)); 392 393 return (0); 394 } 395 #endif 396 #endif /* VRC4172PCI_MCR700_SUPPORT */ 397