sdhc_pci.c revision 1.10
1 /* $NetBSD: sdhc_pci.c,v 1.10 2012/12/20 14:41:35 jakllsch Exp $ */ 2 /* $OpenBSD: sdhc_pci.c,v 1.7 2007/10/30 18:13:45 chl Exp $ */ 3 4 /* 5 * Copyright (c) 2006 Uwe Stuehler <uwe (at) openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/cdefs.h> 21 __KERNEL_RCSID(0, "$NetBSD: sdhc_pci.c,v 1.10 2012/12/20 14:41:35 jakllsch Exp $"); 22 23 #ifdef _KERNEL_OPT 24 #include "opt_sdmmc.h" 25 #endif 26 27 #include <sys/param.h> 28 #include <sys/device.h> 29 #include <sys/systm.h> 30 #include <sys/malloc.h> 31 #include <sys/pmf.h> 32 33 #include <dev/pci/pcivar.h> 34 #include <dev/pci/pcidevs.h> 35 36 #include <dev/sdmmc/sdhcreg.h> 37 #include <dev/sdmmc/sdhcvar.h> 38 #include <dev/sdmmc/sdmmcvar.h> 39 40 /* PCI base address registers */ 41 #define SDHC_PCI_BAR_START PCI_MAPREG_START 42 #define SDHC_PCI_BAR_END PCI_MAPREG_END 43 44 /* PCI interface classes */ 45 #define SDHC_PCI_INTERFACE_NO_DMA 0x00 46 #define SDHC_PCI_INTERFACE_DMA 0x01 47 #define SDHC_PCI_INTERFACE_VENDOR 0x02 48 49 /* 50 * 8-bit PCI configuration register that tells us how many slots there 51 * are and which BAR entry corresponds to the first slot. 52 */ 53 #define SDHC_PCI_CONF_SLOT_INFO 0x40 54 #define SDHC_PCI_NUM_SLOTS(info) ((((info) >> 4) & 0x7) + 1) 55 #define SDHC_PCI_FIRST_BAR(info) ((info) & 0x7) 56 57 struct sdhc_pci_softc { 58 struct sdhc_softc sc; 59 pci_chipset_tag_t sc_pc; 60 void *sc_ih; 61 }; 62 63 static int sdhc_pci_match(device_t, cfdata_t, void *); 64 static void sdhc_pci_attach(device_t, device_t, void *); 65 static int sdhc_pci_detach(device_t, int); 66 67 CFATTACH_DECL_NEW(sdhc_pci, sizeof(struct sdhc_pci_softc), 68 sdhc_pci_match, sdhc_pci_attach, sdhc_pci_detach, NULL); 69 70 #ifdef SDHC_DEBUG 71 #define DPRINTF(s) printf s 72 #else 73 #define DPRINTF(s) /**/ 74 #endif 75 76 static const struct sdhc_pci_quirk { 77 pci_vendor_id_t vendor; 78 pci_product_id_t product; 79 pci_vendor_id_t subvendor; 80 pci_product_id_t subproduct; 81 u_int function; 82 83 uint32_t flags; 84 #define SDHC_PCI_QUIRK_FORCE_DMA (1U << 0) 85 #define SDHC_PCI_QUIRK_TI_HACK (1U << 1) 86 #define SDHC_PCI_QUIRK_NO_PWR0 (1U << 2) 87 #define SDHC_PCI_QUIRK_RICOH_LOWER_FREQ_HACK (1U << 3) 88 } sdhc_pci_quirk_table[] = { 89 { 90 PCI_VENDOR_TI, 91 PCI_PRODUCT_TI_PCI72111SD, 92 0xffff, 93 0xffff, 94 4, 95 SDHC_PCI_QUIRK_TI_HACK 96 }, 97 98 { 99 PCI_VENDOR_TI, 100 PCI_PRODUCT_TI_PCIXX12SD, 101 0xffff, 102 0xffff, 103 3, 104 SDHC_PCI_QUIRK_TI_HACK 105 }, 106 107 { 108 PCI_VENDOR_ENE, 109 PCI_PRODUCT_ENE_CB712, 110 0xffff, 111 0xffff, 112 0, 113 SDHC_PCI_QUIRK_NO_PWR0 114 }, 115 116 { 117 PCI_VENDOR_RICOH, 118 PCI_PRODUCT_RICOH_Rx5U823, 119 0xffff, 120 0xffff, 121 0, 122 SDHC_PCI_QUIRK_RICOH_LOWER_FREQ_HACK 123 }, 124 125 { 126 PCI_VENDOR_RICOH, 127 PCI_PRODUCT_RICOH_Rx5C822, 128 0xffff, 129 0xffff, 130 ~0, 131 SDHC_PCI_QUIRK_FORCE_DMA 132 }, 133 134 { 135 PCI_VENDOR_RICOH, 136 PCI_PRODUCT_RICOH_Rx5U822, 137 0xffff, 138 0xffff, 139 ~0, 140 SDHC_PCI_QUIRK_FORCE_DMA 141 }, 142 }; 143 144 static void sdhc_pci_quirk_ti_hack(struct pci_attach_args *); 145 static void sdhc_pci_quirk_ricoh_lower_freq_hack(struct pci_attach_args *); 146 147 static uint32_t 148 sdhc_pci_lookup_quirk_flags(struct pci_attach_args *pa) 149 { 150 const struct sdhc_pci_quirk *q; 151 pcireg_t id; 152 pci_vendor_id_t vendor; 153 pci_product_id_t product; 154 int i; 155 156 for (i = 0; i < __arraycount(sdhc_pci_quirk_table); i++) { 157 q = &sdhc_pci_quirk_table[i]; 158 159 if ((PCI_VENDOR(pa->pa_id) == q->vendor) 160 && (PCI_PRODUCT(pa->pa_id) == q->product)) { 161 if ((q->function != ~0) 162 && (pa->pa_function != q->function)) 163 continue; 164 165 if ((q->subvendor == 0xffff) 166 && (q->subproduct == 0xffff)) 167 return (q->flags); 168 169 id = pci_conf_read(pa->pa_pc, pa->pa_tag, 170 PCI_SUBSYS_ID_REG); 171 vendor = PCI_VENDOR(id); 172 product = PCI_PRODUCT(id); 173 174 if ((q->subvendor != 0xffff) 175 && (q->subproduct != 0xffff)) { 176 if ((vendor == q->subvendor) 177 && (product == q->subproduct)) 178 return (q->flags); 179 } else if (q->subvendor != 0xffff) { 180 if (product == q->subproduct) 181 return (q->flags); 182 } else { 183 if (vendor == q->subvendor) 184 return (q->flags); 185 } 186 } 187 } 188 return (0); 189 } 190 191 static int 192 sdhc_pci_match(device_t parent, cfdata_t cf, void *aux) 193 { 194 struct pci_attach_args *pa = aux; 195 196 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SYSTEM && 197 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SYSTEM_SDHC) 198 return (1); 199 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_RICOH && 200 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_RICOH_Rx5U822 || 201 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_RICOH_Rx5U823)) 202 return (1); 203 return (0); 204 } 205 206 static void 207 sdhc_pci_attach(device_t parent, device_t self, void *aux) 208 { 209 struct sdhc_pci_softc *sc = device_private(self); 210 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 211 pci_chipset_tag_t pc = pa->pa_pc; 212 pcitag_t tag = pa->pa_tag; 213 pci_intr_handle_t ih; 214 pcireg_t csr; 215 pcireg_t slotinfo; 216 char const *intrstr; 217 int nslots; 218 int reg; 219 int cnt; 220 bus_space_tag_t iot; 221 bus_space_handle_t ioh; 222 bus_size_t size; 223 uint32_t flags; 224 225 sc->sc.sc_dev = self; 226 sc->sc.sc_dmat = pa->pa_dmat; 227 sc->sc.sc_host = NULL; 228 229 sc->sc_pc = pc; 230 231 pci_aprint_devinfo(pa, NULL); 232 233 /* Some controllers needs special treatment. */ 234 flags = sdhc_pci_lookup_quirk_flags(pa); 235 if (ISSET(flags, SDHC_PCI_QUIRK_TI_HACK)) 236 sdhc_pci_quirk_ti_hack(pa); 237 if (ISSET(flags, SDHC_PCI_QUIRK_FORCE_DMA)) 238 SET(sc->sc.sc_flags, SDHC_FLAG_FORCE_DMA); 239 if (ISSET(flags, SDHC_PCI_QUIRK_NO_PWR0)) 240 SET(sc->sc.sc_flags, SDHC_FLAG_NO_PWR0); 241 if (ISSET(flags, SDHC_PCI_QUIRK_RICOH_LOWER_FREQ_HACK)) 242 sdhc_pci_quirk_ricoh_lower_freq_hack(pa); 243 244 /* 245 * Map and attach all hosts supported by the host controller. 246 */ 247 slotinfo = pci_conf_read(pc, tag, SDHC_PCI_CONF_SLOT_INFO); 248 nslots = SDHC_PCI_NUM_SLOTS(slotinfo); 249 250 /* Allocate an array big enough to hold all the possible hosts */ 251 sc->sc.sc_host = malloc(sizeof(struct sdhc_host *) * nslots, 252 M_DEVBUF, M_NOWAIT | M_ZERO); 253 if (sc->sc.sc_host == NULL) { 254 aprint_error_dev(self, "couldn't alloc memory\n"); 255 goto err; 256 } 257 258 /* Enable the device. */ 259 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 260 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 261 csr | PCI_COMMAND_MASTER_ENABLE); 262 263 /* Map and establish the interrupt. */ 264 if (pci_intr_map(pa, &ih)) { 265 aprint_error_dev(self, "couldn't map interrupt\n"); 266 goto err; 267 } 268 269 intrstr = pci_intr_string(pc, ih); 270 sc->sc_ih = pci_intr_establish(pc, ih, IPL_SDMMC, sdhc_intr, &sc->sc); 271 if (sc->sc_ih == NULL) { 272 aprint_error_dev(self, "couldn't establish interrupt\n"); 273 goto err; 274 } 275 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 276 277 /* Enable use of DMA if supported by the interface. */ 278 if ((PCI_INTERFACE(pa->pa_class) == SDHC_PCI_INTERFACE_DMA)) 279 SET(sc->sc.sc_flags, SDHC_FLAG_USE_DMA); 280 281 /* XXX: handle 64-bit BARs */ 282 cnt = 0; 283 for (reg = SDHC_PCI_BAR_START + SDHC_PCI_FIRST_BAR(slotinfo) * 284 sizeof(uint32_t); 285 reg < SDHC_PCI_BAR_END && nslots > 0; 286 reg += sizeof(uint32_t), nslots--) { 287 if (pci_mapreg_map(pa, reg, PCI_MAPREG_TYPE_MEM, 0, 288 &iot, &ioh, NULL, &size)) { 289 continue; 290 } 291 292 cnt++; 293 if (sdhc_host_found(&sc->sc, iot, ioh, size) != 0) { 294 /* XXX: sc->sc_host leak */ 295 aprint_error_dev(self, 296 "couldn't initialize host (0x%x)\n", reg); 297 } 298 } 299 if (cnt == 0) { 300 aprint_error_dev(self, "couldn't map register\n"); 301 goto err; 302 } 303 304 if (!pmf_device_register1(self, sdhc_suspend, sdhc_resume, 305 sdhc_shutdown)) { 306 aprint_error_dev(self, "couldn't establish powerhook\n"); 307 } 308 309 return; 310 311 err: 312 if (sc->sc.sc_host != NULL) { 313 free(sc->sc.sc_host, M_DEVBUF); 314 sc->sc.sc_host = NULL; 315 } 316 } 317 318 static int 319 sdhc_pci_detach(device_t self, int flags) 320 { 321 struct sdhc_pci_softc * const sc = device_private(self); 322 int rv; 323 324 rv = sdhc_detach(&sc->sc, flags); 325 if (rv) 326 return rv; 327 328 if (sc->sc_ih != NULL) { 329 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 330 sc->sc_ih = NULL; 331 } 332 333 if (sc->sc.sc_host != NULL) { 334 free(sc->sc.sc_host, M_DEVBUF); 335 sc->sc.sc_host = NULL; 336 } 337 338 return rv; 339 } 340 341 static void 342 sdhc_pci_conf_write(struct pci_attach_args *pa, int reg, uint8_t val) 343 { 344 pcireg_t r; 345 346 r = pci_conf_read(pa->pa_pc, pa->pa_tag, reg & ~0x3); 347 r &= ~(0xff << ((reg & 0x3) * 8)); 348 r |= (val << ((reg & 0x3) * 8)); 349 pci_conf_write(pa->pa_pc, pa->pa_tag, reg & ~0x3, r); 350 } 351 352 /* TI specific register */ 353 #define SDHC_PCI_GENERAL_CTL 0x4c 354 #define MMC_SD_DIS 0x02 355 356 static void 357 sdhc_pci_quirk_ti_hack(struct pci_attach_args *pa) 358 { 359 pci_chipset_tag_t pc = pa->pa_pc; 360 pcitag_t tag; 361 pcireg_t id, reg; 362 363 /* Look at func - 1 for the flash device */ 364 tag = pci_make_tag(pc, pa->pa_bus, pa->pa_device, pa->pa_function - 1); 365 id = pci_conf_read(pc, tag, PCI_ID_REG); 366 if (PCI_VENDOR(id) != PCI_VENDOR_TI) { 367 return; 368 } 369 switch (PCI_PRODUCT(id)) { 370 case PCI_PRODUCT_TI_PCI72111FM: 371 case PCI_PRODUCT_TI_PCIXX12FM: 372 break; 373 default: 374 return; 375 } 376 377 /* 378 * Disable MMC/SD on the flash media controller so the 379 * SD host takes over. 380 */ 381 reg = pci_conf_read(pc, tag, SDHC_PCI_GENERAL_CTL); 382 reg |= MMC_SD_DIS; 383 pci_conf_write(pc, tag, SDHC_PCI_GENERAL_CTL, reg); 384 } 385 386 /* Ricoh specific register */ 387 #define SDHC_PCI_MODE_KEY 0xf9 388 #define SDHC_PCI_MODE 0x150 389 #define SDHC_PCI_MODE_SD20 0x10 390 #define SDHC_PCI_BASE_FREQ_KEY 0xfc 391 #define SDHC_PCI_BASE_FREQ 0xe1 392 393 /* Some RICOH controllers need to be bumped into the right mode. */ 394 static void 395 sdhc_pci_quirk_ricoh_lower_freq_hack(struct pci_attach_args *pa) 396 { 397 398 /* Enable SD2.0 mode. */ 399 sdhc_pci_conf_write(pa, SDHC_PCI_MODE_KEY, 0xfc); 400 sdhc_pci_conf_write(pa, SDHC_PCI_MODE, SDHC_PCI_MODE_SD20); 401 sdhc_pci_conf_write(pa, SDHC_PCI_MODE_KEY, 0x00); 402 403 /* 404 * Some SD/MMC cards don't work with the default base 405 * clock frequency of 200MHz. Lower it to 50Hz. 406 */ 407 sdhc_pci_conf_write(pa, SDHC_PCI_BASE_FREQ_KEY, 0x01); 408 sdhc_pci_conf_write(pa, SDHC_PCI_BASE_FREQ, 50); 409 sdhc_pci_conf_write(pa, SDHC_PCI_BASE_FREQ_KEY, 0x00); 410 } 411
Indexes created Wed Oct 22 13:09:56 GMT 2025