1 /* $NetBSD: vrc4172pci.c,v 1.7 2002/10/02 05:26:54 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 CFATTACH_DECL(vrc4172pci, sizeof(struct vrc4172pci_softc), 106 vrc4172pci_match, vrc4172pci_attach, NULL, NULL); 107 108 static inline void 109 vrc4172pci_write(struct vrc4172pci_softc *sc, int offset, u_int32_t val) 110 { 111 112 bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val); 113 } 114 115 static inline u_int32_t 116 vrc4172pci_read(struct vrc4172pci_softc *sc, int offset) 117 { 118 u_int32_t res; 119 120 if (bus_space_peek(sc->sc_iot, sc->sc_ioh, offset, 4, &res) < 0) { 121 res = 0xffffffff; 122 } 123 124 return (res); 125 } 126 127 static int 128 vrc4172pci_match(struct device *parent, struct cfdata *match, void *aux) 129 { 130 131 return (1); 132 } 133 134 static void 135 vrc4172pci_attach(struct device *parent, struct device *self, void *aux) 136 { 137 struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)self; 138 pci_chipset_tag_t pc = &sc->sc_pc; 139 struct vrip_attach_args *va = aux; 140 #if NPCI > 0 141 struct pcibus_attach_args pba; 142 #endif 143 144 sc->sc_iot = va->va_iot; 145 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0, 146 &sc->sc_ioh)) { 147 printf(": couldn't map io space\n"); 148 return; 149 } 150 printf("\n"); 151 152 #ifdef VRC4172PCI_MCR700_SUPPORT 153 if (platid_match(&platid, &platid_mask_MACH_NEC_MCR_700) || 154 platid_match(&platid, &platid_mask_MACH_NEC_MCR_700A)) { 155 /* power USB controller on MC-R700 */ 156 sc->sc_iochip = va->va_gpio_chips[VRIP_IOCHIP_VRGIU]; 157 hpcio_portwrite(sc->sc_iochip, 45, 1); 158 sc->sc_fake_baseaddr = 0x0afe0000; 159 #if 0 160 sc->sc_ih = hpcio_intr_establish(sc->sc_iochip, 1, 161 HPCIO_INTR_EDGE|HPCIO_INTR_HOLD, 162 vrc4172pci_mcr700_intr, sc); 163 #endif 164 } 165 #endif /* VRC4172PCI_MCR700_SUPPORT */ 166 167 pc->pc_dev = &sc->sc_dev; 168 pc->pc_attach_hook = vrc4172pci_attach_hook; 169 pc->pc_bus_maxdevs = vrc4172pci_bus_maxdevs; 170 pc->pc_bus_devorder = vrc4172pci_bus_devorder; 171 pc->pc_make_tag = vrc4172pci_make_tag; 172 pc->pc_decompose_tag = vrc4172pci_decompose_tag; 173 pc->pc_conf_read = vrc4172pci_conf_read; 174 pc->pc_conf_write = vrc4172pci_conf_write; 175 pc->pc_intr_map = vrc4172pci_intr_map; 176 pc->pc_intr_string = vrc4172pci_intr_string; 177 pc->pc_intr_evcnt = vrc4172pci_intr_evcnt; 178 pc->pc_intr_establish = vrc4172pci_intr_establish; 179 pc->pc_intr_disestablish = vrc4172pci_intr_disestablish; 180 181 #if 0 182 { 183 int i; 184 185 for (i = 0; i < 2; i++) 186 printf("%s: ID_REG(0, 0, %d) = 0x%08x\n", 187 sc->sc_dev.dv_xname, i, 188 pci_conf_read(pc, pci_make_tag(pc, 0, 0, i), 189 PCI_ID_REG)); 190 } 191 #endif 192 193 #if NPCI > 0 194 memset(&pba, 0, sizeof(pba)); 195 pba.pba_busname = "pci"; 196 pba.pba_iot = sc->sc_iot; 197 pba.pba_memt = sc->sc_iot; 198 pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt; 199 pba.pba_bus = 0; 200 pba.pba_bridgetag = NULL; 201 pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED | 202 PCI_FLAGS_MRL_OKAY; 203 pba.pba_pc = pc; 204 205 config_found(self, &pba, vrc4172pci_print); 206 #endif 207 } 208 209 #if NPCI > 0 210 static int 211 vrc4172pci_print(void *aux, const char *pnp) 212 { 213 struct pcibus_attach_args *pba = aux; 214 215 if (pnp != NULL) 216 printf("%s at %s", pba->pba_busname, pnp); 217 else 218 printf(" bus %d", pba->pba_bus); 219 220 return (UNCONF); 221 } 222 #endif 223 224 void 225 vrc4172pci_attach_hook(struct device *parent, struct device *self, 226 struct pcibus_attach_args *pba) 227 { 228 229 return; 230 } 231 232 int 233 vrc4172pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 234 { 235 236 return (1); /* Vrc4172 has only one device */ 237 } 238 239 int 240 vrc4172pci_bus_devorder(pci_chipset_tag_t pc, int busno, char *devs) 241 { 242 int i; 243 244 *devs++ = 0; 245 for (i = 1; i < 32; i++) 246 *devs++ = -1; 247 248 return (1); 249 } 250 251 pcitag_t 252 vrc4172pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) 253 { 254 255 return ((bus << 16) | (device << 11) | (function << 8)); 256 } 257 258 void 259 vrc4172pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, 260 int *fp) 261 { 262 263 if (bp != NULL) 264 *bp = (tag >> 16) & 0xff; 265 if (dp != NULL) 266 *dp = (tag >> 11) & 0x1f; 267 if (fp != NULL) 268 *fp = (tag >> 8) & 0x07; 269 } 270 271 pcireg_t 272 vrc4172pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 273 { 274 struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)pc->pc_dev; 275 u_int32_t val; 276 277 #ifdef VRC4172PCI_MCR700_SUPPORT 278 if (sc->sc_fake_baseaddr != 0 && 279 tag == vrc4172pci_make_tag(pc, 0, 0, 1) && 280 reg == PCI_MAPREG_START) { 281 val = sc->sc_fake_baseaddr; 282 goto out; 283 } 284 #endif /* VRC4172PCI_MCR700_SUPPORT */ 285 286 tag |= VRC4172PCI_CONFADDR_CONFIGEN; 287 288 vrc4172pci_write(sc, VRC4172PCI_CONFAREG, tag | reg); 289 val = vrc4172pci_read(sc, VRC4172PCI_CONFDREG); 290 291 #ifdef VRC4172PCI_MCR700_SUPPORT 292 out: 293 #endif 294 DPRINTF(("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 295 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, val)); 296 297 return (val); 298 } 299 300 void 301 vrc4172pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, 302 pcireg_t data) 303 { 304 struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)pc->pc_dev; 305 306 DPRINTF(("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", 307 sc->sc_dev.dv_xname, (u_int32_t)tag, reg, (u_int32_t)data)); 308 309 #ifdef VRC4172PCI_MCR700_SUPPORT 310 if (sc->sc_fake_baseaddr != 0 && 311 tag == vrc4172pci_make_tag(pc, 0, 0, 1) && 312 reg == PCI_MAPREG_START) { 313 sc->sc_fake_baseaddr = (data & 0xfffff000); 314 return; 315 } 316 #endif /* VRC4172PCI_MCR700_SUPPORT */ 317 318 tag |= VRC4172PCI_CONFADDR_CONFIGEN; 319 320 vrc4172pci_write(sc, VRC4172PCI_CONFAREG, tag | reg); 321 vrc4172pci_write(sc, VRC4172PCI_CONFDREG, data); 322 } 323 324 int 325 vrc4172pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 326 { 327 pci_chipset_tag_t pc = pa->pa_pc; 328 pcitag_t intrtag = pa->pa_intrtag; 329 int bus, dev, func; 330 331 pci_decompose_tag(pc, intrtag, &bus, &dev, &func); 332 DPRINTF(("%s(%d, %d, %d): line = %d, pin = %d\n", pc->pc_dev->dv_xname, 333 bus, dev, func, pa->pa_intrline, pa->pa_intrpin)); 334 335 *ihp = CONFIG_HOOK_PCIINTR_ID(bus, dev, func); 336 337 return (0); 338 } 339 340 const char * 341 vrc4172pci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih) 342 { 343 static char irqstr[sizeof("pciintr") + 16]; 344 345 snprintf(irqstr, sizeof(irqstr), "pciintr %d:%d:%d", 346 CONFIG_HOOK_PCIINTR_BUS((int)ih), 347 CONFIG_HOOK_PCIINTR_DEVICE((int)ih), 348 CONFIG_HOOK_PCIINTR_FUNCTION((int)ih)); 349 350 return (irqstr); 351 } 352 353 const struct evcnt * 354 vrc4172pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 355 { 356 357 return (NULL); 358 } 359 360 void * 361 vrc4172pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, 362 int level, int (*func)(void *), void *arg) 363 { 364 365 if (ih == -1) 366 return (NULL); 367 DPRINTF(("vrc4172pci_intr_establish: %lx\n", ih)); 368 369 return (config_hook(CONFIG_HOOK_PCIINTR, ih, CONFIG_HOOK_EXCLUSIVE, 370 (int (*)(void *, int, long, void *))func, arg)); 371 } 372 373 void 374 vrc4172pci_intr_disestablish(pci_chipset_tag_t pc, void *cookie) 375 { 376 377 DPRINTF(("vrc4172pci_intr_disestablish: %p\n", cookie)); 378 config_unhook(cookie); 379 } 380 381 #ifdef VRC4172PCI_MCR700_SUPPORT 382 #if 0 383 int 384 vrc4172pci_mcr700_intr(void *arg) 385 { 386 struct vrc4172pci_softc *sc = arg; 387 388 hpcio_intr_clear(sc->sc_iochip, sc->sc_ih); 389 printf("USB port %s\n", hpcio_portread(sc->sc_iochip, 1) ? "ON" : "OFF"); 390 hpcio_portwrite(sc->sc_iochip, 45, hpcio_portread(sc->sc_iochip, 1)); 391 392 return (0); 393 } 394 #endif 395 #endif /* VRC4172PCI_MCR700_SUPPORT */ 396