sdmmc_io.c revision 1.1.2.2
1 1.1.2.2 skrll /* $NetBSD: sdmmc_io.c,v 1.1.2.2 2009/04/28 07:36:33 skrll Exp $ */ 2 1.1.2.2 skrll /* $OpenBSD: sdmmc_io.c,v 1.10 2007/09/17 01:33:33 krw Exp $ */ 3 1.1.2.2 skrll 4 1.1.2.2 skrll /* 5 1.1.2.2 skrll * Copyright (c) 2006 Uwe Stuehler <uwe (at) openbsd.org> 6 1.1.2.2 skrll * 7 1.1.2.2 skrll * Permission to use, copy, modify, and distribute this software for any 8 1.1.2.2 skrll * purpose with or without fee is hereby granted, provided that the above 9 1.1.2.2 skrll * copyright notice and this permission notice appear in all copies. 10 1.1.2.2 skrll * 11 1.1.2.2 skrll * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 1.1.2.2 skrll * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 1.1.2.2 skrll * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 1.1.2.2 skrll * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 1.1.2.2 skrll * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 1.1.2.2 skrll * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 1.1.2.2 skrll * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 1.1.2.2 skrll */ 19 1.1.2.2 skrll 20 1.1.2.2 skrll /* Routines for SD I/O cards. */ 21 1.1.2.2 skrll 22 1.1.2.2 skrll #include <sys/cdefs.h> 23 1.1.2.2 skrll __KERNEL_RCSID(0, "$NetBSD: sdmmc_io.c,v 1.1.2.2 2009/04/28 07:36:33 skrll Exp $"); 24 1.1.2.2 skrll 25 1.1.2.2 skrll #include <sys/param.h> 26 1.1.2.2 skrll #include <sys/kernel.h> 27 1.1.2.2 skrll #include <sys/malloc.h> 28 1.1.2.2 skrll #include <sys/proc.h> 29 1.1.2.2 skrll #include <sys/systm.h> 30 1.1.2.2 skrll 31 1.1.2.2 skrll #include <dev/sdmmc/sdmmc_ioreg.h> 32 1.1.2.2 skrll #include <dev/sdmmc/sdmmcchip.h> 33 1.1.2.2 skrll #include <dev/sdmmc/sdmmcreg.h> 34 1.1.2.2 skrll #include <dev/sdmmc/sdmmcvar.h> 35 1.1.2.2 skrll 36 1.1.2.2 skrll #ifdef SDMMC_DEBUG 37 1.1.2.2 skrll #define DPRINTF(s) do { printf s; } while (0) 38 1.1.2.2 skrll #else 39 1.1.2.2 skrll #define DPRINTF(s) do {} while (0) 40 1.1.2.2 skrll #endif 41 1.1.2.2 skrll 42 1.1.2.2 skrll struct sdmmc_intr_handler { 43 1.1.2.2 skrll struct sdmmc_softc *ih_softc; 44 1.1.2.2 skrll char *ih_name; 45 1.1.2.2 skrll int (*ih_fun)(void *); 46 1.1.2.2 skrll void *ih_arg; 47 1.1.2.2 skrll TAILQ_ENTRY(sdmmc_intr_handler) entry; 48 1.1.2.2 skrll }; 49 1.1.2.2 skrll 50 1.1.2.2 skrll static int sdmmc_io_rw_direct(struct sdmmc_softc *, 51 1.1.2.2 skrll struct sdmmc_function *, int, u_char *, int); 52 1.1.2.2 skrll static int sdmmc_io_rw_extended(struct sdmmc_softc *, 53 1.1.2.2 skrll struct sdmmc_function *, int, u_char *, int, int); 54 1.1.2.2 skrll #if 0 55 1.1.2.2 skrll static int sdmmc_io_xchg(struct sdmmc_softc *, struct sdmmc_function *, 56 1.1.2.2 skrll int, u_char *); 57 1.1.2.2 skrll #endif 58 1.1.2.2 skrll static void sdmmc_io_reset(struct sdmmc_softc *); 59 1.1.2.2 skrll static int sdmmc_io_send_op_cond(struct sdmmc_softc *, uint32_t, 60 1.1.2.2 skrll uint32_t *); 61 1.1.2.2 skrll 62 1.1.2.2 skrll /* 63 1.1.2.2 skrll * Initialize SD I/O card functions (before memory cards). The host 64 1.1.2.2 skrll * system and controller must support card interrupts in order to use 65 1.1.2.2 skrll * I/O functions. 66 1.1.2.2 skrll */ 67 1.1.2.2 skrll int 68 1.1.2.2 skrll sdmmc_io_enable(struct sdmmc_softc *sc) 69 1.1.2.2 skrll { 70 1.1.2.2 skrll uint32_t host_ocr; 71 1.1.2.2 skrll uint32_t card_ocr; 72 1.1.2.2 skrll int error; 73 1.1.2.2 skrll 74 1.1.2.2 skrll SDMMC_LOCK(sc); 75 1.1.2.2 skrll 76 1.1.2.2 skrll /* Set host mode to SD "combo" card. */ 77 1.1.2.2 skrll SET(sc->sc_flags, SMF_SD_MODE|SMF_IO_MODE|SMF_MEM_MODE); 78 1.1.2.2 skrll 79 1.1.2.2 skrll /* Reset I/O functions. */ 80 1.1.2.2 skrll sdmmc_io_reset(sc); 81 1.1.2.2 skrll 82 1.1.2.2 skrll /* 83 1.1.2.2 skrll * Read the I/O OCR value, determine the number of I/O 84 1.1.2.2 skrll * functions and whether memory is also present (a "combo 85 1.1.2.2 skrll * card") by issuing CMD5. SD memory-only and MMC cards 86 1.1.2.2 skrll * do not respond to CMD5. 87 1.1.2.2 skrll */ 88 1.1.2.2 skrll error = sdmmc_io_send_op_cond(sc, 0, &card_ocr); 89 1.1.2.2 skrll if (error) { 90 1.1.2.2 skrll /* No SDIO card; switch to SD memory-only mode. */ 91 1.1.2.2 skrll CLR(sc->sc_flags, SMF_IO_MODE); 92 1.1.2.2 skrll error = 0; 93 1.1.2.2 skrll goto out; 94 1.1.2.2 skrll } 95 1.1.2.2 skrll 96 1.1.2.2 skrll /* Parse the additional bits in the I/O OCR value. */ 97 1.1.2.2 skrll if (!ISSET(card_ocr, SD_IO_OCR_MEM_PRESENT)) { 98 1.1.2.2 skrll /* SDIO card without memory (not a "combo card"). */ 99 1.1.2.2 skrll DPRINTF(("%s: no memory present\n", SDMMCDEVNAME(sc))); 100 1.1.2.2 skrll CLR(sc->sc_flags, SMF_MEM_MODE); 101 1.1.2.2 skrll } 102 1.1.2.2 skrll sc->sc_function_count = SD_IO_OCR_NUM_FUNCTIONS(card_ocr); 103 1.1.2.2 skrll if (sc->sc_function_count == 0) { 104 1.1.2.2 skrll /* Useless SDIO card without any I/O functions. */ 105 1.1.2.2 skrll DPRINTF(("%s: no I/O functions\n", SDMMCDEVNAME(sc))); 106 1.1.2.2 skrll CLR(sc->sc_flags, SMF_IO_MODE); 107 1.1.2.2 skrll error = 0; 108 1.1.2.2 skrll goto out; 109 1.1.2.2 skrll } 110 1.1.2.2 skrll card_ocr &= SD_IO_OCR_MASK; 111 1.1.2.2 skrll 112 1.1.2.2 skrll /* Set the lowest voltage supported by the card and host. */ 113 1.1.2.2 skrll host_ocr = sdmmc_chip_host_ocr(sc->sc_sct, sc->sc_sch); 114 1.1.2.2 skrll error = sdmmc_set_bus_power(sc, host_ocr, card_ocr); 115 1.1.2.2 skrll if (error) { 116 1.1.2.2 skrll aprint_error_dev(sc->sc_dev, 117 1.1.2.2 skrll "couldn't supply voltage requested by card\n"); 118 1.1.2.2 skrll goto out; 119 1.1.2.2 skrll } 120 1.1.2.2 skrll 121 1.1.2.2 skrll /* Reset I/O functions (again). */ 122 1.1.2.2 skrll sdmmc_io_reset(sc); 123 1.1.2.2 skrll 124 1.1.2.2 skrll /* Send the new OCR value until all cards are ready. */ 125 1.1.2.2 skrll error = sdmmc_io_send_op_cond(sc, host_ocr, NULL); 126 1.1.2.2 skrll if (error) { 127 1.1.2.2 skrll aprint_error_dev(sc->sc_dev, "couldn't send I/O OCR\n"); 128 1.1.2.2 skrll goto out; 129 1.1.2.2 skrll } 130 1.1.2.2 skrll 131 1.1.2.2 skrll out: 132 1.1.2.2 skrll SDMMC_UNLOCK(sc); 133 1.1.2.2 skrll 134 1.1.2.2 skrll return error; 135 1.1.2.2 skrll } 136 1.1.2.2 skrll 137 1.1.2.2 skrll /* 138 1.1.2.2 skrll * Allocate sdmmc_function structures for SD card I/O function 139 1.1.2.2 skrll * (including function 0). 140 1.1.2.2 skrll */ 141 1.1.2.2 skrll void 142 1.1.2.2 skrll sdmmc_io_scan(struct sdmmc_softc *sc) 143 1.1.2.2 skrll { 144 1.1.2.2 skrll struct sdmmc_function *sf0, *sf; 145 1.1.2.2 skrll int error; 146 1.1.2.2 skrll int i; 147 1.1.2.2 skrll 148 1.1.2.2 skrll SDMMC_LOCK(sc); 149 1.1.2.2 skrll 150 1.1.2.2 skrll sf0 = sdmmc_function_alloc(sc); 151 1.1.2.2 skrll sf0->number = 0; 152 1.1.2.2 skrll error = sdmmc_set_relative_addr(sc, sf0); 153 1.1.2.2 skrll if (error) { 154 1.1.2.2 skrll aprint_error_dev(sc->sc_dev, "couldn't set I/O RCA\n"); 155 1.1.2.2 skrll SET(sf0->flags, SFF_ERROR); 156 1.1.2.2 skrll goto out; 157 1.1.2.2 skrll } 158 1.1.2.2 skrll sc->sc_fn0 = sf0; 159 1.1.2.2 skrll SIMPLEQ_INSERT_TAIL(&sc->sf_head, sf0, sf_list); 160 1.1.2.2 skrll 161 1.1.2.2 skrll /* Verify that the RCA has been set by selecting the card. */ 162 1.1.2.2 skrll error = sdmmc_select_card(sc, sf0); 163 1.1.2.2 skrll if (error) { 164 1.1.2.2 skrll aprint_error_dev(sc->sc_dev, "couldn't select I/O RCA %d\n", 165 1.1.2.2 skrll sf0->rca); 166 1.1.2.2 skrll SET(sf0->flags, SFF_ERROR); 167 1.1.2.2 skrll goto out; 168 1.1.2.2 skrll } 169 1.1.2.2 skrll 170 1.1.2.2 skrll for (i = 1; i <= sc->sc_function_count; i++) { 171 1.1.2.2 skrll sf = sdmmc_function_alloc(sc); 172 1.1.2.2 skrll sf->number = i; 173 1.1.2.2 skrll sf->rca = sf0->rca; 174 1.1.2.2 skrll SIMPLEQ_INSERT_TAIL(&sc->sf_head, sf, sf_list); 175 1.1.2.2 skrll } 176 1.1.2.2 skrll 177 1.1.2.2 skrll out: 178 1.1.2.2 skrll SDMMC_UNLOCK(sc); 179 1.1.2.2 skrll } 180 1.1.2.2 skrll 181 1.1.2.2 skrll /* 182 1.1.2.2 skrll * Initialize SDIO card functions. 183 1.1.2.2 skrll */ 184 1.1.2.2 skrll int 185 1.1.2.2 skrll sdmmc_io_init(struct sdmmc_softc *sc, struct sdmmc_function *sf) 186 1.1.2.2 skrll { 187 1.1.2.2 skrll int error = 0; 188 1.1.2.2 skrll 189 1.1.2.2 skrll SDMMC_LOCK(sc); 190 1.1.2.2 skrll 191 1.1.2.2 skrll if (sf->number == 0) { 192 1.1.2.2 skrll sdmmc_io_write_1(sf, SD_IO_CCCR_BUS_WIDTH, CCCR_BUS_WIDTH_1); 193 1.1.2.2 skrll 194 1.1.2.2 skrll error = sdmmc_read_cis(sf, &sf->cis); 195 1.1.2.2 skrll if (error) { 196 1.1.2.2 skrll aprint_error_dev(sc->sc_dev, "couldn't read CIS\n"); 197 1.1.2.2 skrll SET(sf->flags, SFF_ERROR); 198 1.1.2.2 skrll goto out; 199 1.1.2.2 skrll } 200 1.1.2.2 skrll 201 1.1.2.2 skrll sdmmc_check_cis_quirks(sf); 202 1.1.2.2 skrll 203 1.1.2.2 skrll #ifdef SDMMC_DEBUG 204 1.1.2.2 skrll if (sdmmcdebug) 205 1.1.2.2 skrll sdmmc_print_cis(sf); 206 1.1.2.2 skrll #endif 207 1.1.2.2 skrll } 208 1.1.2.2 skrll 209 1.1.2.2 skrll out: 210 1.1.2.2 skrll SDMMC_UNLOCK(sc); 211 1.1.2.2 skrll 212 1.1.2.2 skrll return error; 213 1.1.2.2 skrll } 214 1.1.2.2 skrll 215 1.1.2.2 skrll /* 216 1.1.2.2 skrll * Indicate whether the function is ready to operate. 217 1.1.2.2 skrll */ 218 1.1.2.2 skrll static int 219 1.1.2.2 skrll sdmmc_io_function_ready(struct sdmmc_function *sf) 220 1.1.2.2 skrll { 221 1.1.2.2 skrll struct sdmmc_softc *sc = sf->sc; 222 1.1.2.2 skrll struct sdmmc_function *sf0 = sc->sc_fn0; 223 1.1.2.2 skrll uint8_t reg; 224 1.1.2.2 skrll 225 1.1.2.2 skrll if (sf->number == 0) 226 1.1.2.2 skrll return 1; /* FN0 is always ready */ 227 1.1.2.2 skrll 228 1.1.2.2 skrll SDMMC_LOCK(sc); 229 1.1.2.2 skrll reg = sdmmc_io_read_1(sf0, SD_IO_CCCR_FN_IOREADY); 230 1.1.2.2 skrll SDMMC_UNLOCK(sc); 231 1.1.2.2 skrll return (reg & (1 << sf->number)) != 0; 232 1.1.2.2 skrll } 233 1.1.2.2 skrll 234 1.1.2.2 skrll int 235 1.1.2.2 skrll sdmmc_io_function_enable(struct sdmmc_function *sf) 236 1.1.2.2 skrll { 237 1.1.2.2 skrll struct sdmmc_softc *sc = sf->sc; 238 1.1.2.2 skrll struct sdmmc_function *sf0 = sc->sc_fn0; 239 1.1.2.2 skrll uint8_t reg; 240 1.1.2.2 skrll int retry; 241 1.1.2.2 skrll 242 1.1.2.2 skrll if (sf->number == 0) 243 1.1.2.2 skrll return 0; /* FN0 is always enabled */ 244 1.1.2.2 skrll 245 1.1.2.2 skrll SDMMC_LOCK(sc); 246 1.1.2.2 skrll reg = sdmmc_io_read_1(sf0, SD_IO_CCCR_FN_ENABLE); 247 1.1.2.2 skrll SET(reg, (1U << sf->number)); 248 1.1.2.2 skrll sdmmc_io_write_1(sf0, SD_IO_CCCR_FN_ENABLE, reg); 249 1.1.2.2 skrll SDMMC_UNLOCK(sc); 250 1.1.2.2 skrll 251 1.1.2.2 skrll retry = 5; 252 1.1.2.2 skrll while (!sdmmc_io_function_ready(sf) && retry-- > 0) 253 1.1.2.2 skrll tsleep(&lbolt, PPAUSE, "pause", 0); 254 1.1.2.2 skrll return (retry >= 0) ? 0 : ETIMEDOUT; 255 1.1.2.2 skrll } 256 1.1.2.2 skrll 257 1.1.2.2 skrll /* 258 1.1.2.2 skrll * Disable the I/O function. Return zero if the function was 259 1.1.2.2 skrll * disabled successfully. 260 1.1.2.2 skrll */ 261 1.1.2.2 skrll void 262 1.1.2.2 skrll sdmmc_io_function_disable(struct sdmmc_function *sf) 263 1.1.2.2 skrll { 264 1.1.2.2 skrll struct sdmmc_softc *sc = sf->sc; 265 1.1.2.2 skrll struct sdmmc_function *sf0 = sc->sc_fn0; 266 1.1.2.2 skrll uint8_t reg; 267 1.1.2.2 skrll 268 1.1.2.2 skrll if (sf->number == 0) 269 1.1.2.2 skrll return; /* FN0 is always enabled */ 270 1.1.2.2 skrll 271 1.1.2.2 skrll SDMMC_LOCK(sc); 272 1.1.2.2 skrll reg = sdmmc_io_read_1(sf0, SD_IO_CCCR_FN_ENABLE); 273 1.1.2.2 skrll CLR(reg, (1U << sf->number)); 274 1.1.2.2 skrll sdmmc_io_write_1(sf0, SD_IO_CCCR_FN_ENABLE, reg); 275 1.1.2.2 skrll SDMMC_UNLOCK(sc); 276 1.1.2.2 skrll } 277 1.1.2.2 skrll 278 1.1.2.2 skrll static int 279 1.1.2.2 skrll sdmmc_io_rw_direct(struct sdmmc_softc *sc, struct sdmmc_function *sf, 280 1.1.2.2 skrll int reg, u_char *datap, int arg) 281 1.1.2.2 skrll { 282 1.1.2.2 skrll struct sdmmc_command cmd; 283 1.1.2.2 skrll int error; 284 1.1.2.2 skrll 285 1.1.2.2 skrll /* Don't lock */ 286 1.1.2.2 skrll 287 1.1.2.2 skrll /* Make sure the card is selected. */ 288 1.1.2.2 skrll error = sdmmc_select_card(sc, sf); 289 1.1.2.2 skrll if (error) 290 1.1.2.2 skrll return error; 291 1.1.2.2 skrll 292 1.1.2.2 skrll arg |= ((sf == NULL ? 0 : sf->number) & SD_ARG_CMD52_FUNC_MASK) << 293 1.1.2.2 skrll SD_ARG_CMD52_FUNC_SHIFT; 294 1.1.2.2 skrll arg |= (reg & SD_ARG_CMD52_REG_MASK) << 295 1.1.2.2 skrll SD_ARG_CMD52_REG_SHIFT; 296 1.1.2.2 skrll arg |= (*datap & SD_ARG_CMD52_DATA_MASK) << 297 1.1.2.2 skrll SD_ARG_CMD52_DATA_SHIFT; 298 1.1.2.2 skrll 299 1.1.2.2 skrll memset(&cmd, 0, sizeof cmd); 300 1.1.2.2 skrll cmd.c_opcode = SD_IO_RW_DIRECT; 301 1.1.2.2 skrll cmd.c_arg = arg; 302 1.1.2.2 skrll cmd.c_flags = SCF_CMD_AC | SCF_RSP_R5; 303 1.1.2.2 skrll 304 1.1.2.2 skrll error = sdmmc_mmc_command(sc, &cmd); 305 1.1.2.2 skrll *datap = SD_R5_DATA(cmd.c_resp); 306 1.1.2.2 skrll 307 1.1.2.2 skrll return error; 308 1.1.2.2 skrll } 309 1.1.2.2 skrll 310 1.1.2.2 skrll /* 311 1.1.2.2 skrll * Useful values of `arg' to pass in are either SD_ARG_CMD53_READ or 312 1.1.2.2 skrll * SD_ARG_CMD53_WRITE. SD_ARG_CMD53_INCREMENT may be ORed into `arg' 313 1.1.2.2 skrll * to access successive register locations instead of accessing the 314 1.1.2.2 skrll * same register many times. 315 1.1.2.2 skrll */ 316 1.1.2.2 skrll static int 317 1.1.2.2 skrll sdmmc_io_rw_extended(struct sdmmc_softc *sc, struct sdmmc_function *sf, 318 1.1.2.2 skrll int reg, u_char *datap, int datalen, int arg) 319 1.1.2.2 skrll { 320 1.1.2.2 skrll struct sdmmc_command cmd; 321 1.1.2.2 skrll int error; 322 1.1.2.2 skrll 323 1.1.2.2 skrll /* Don't lock */ 324 1.1.2.2 skrll 325 1.1.2.2 skrll #if 0 326 1.1.2.2 skrll /* Make sure the card is selected. */ 327 1.1.2.2 skrll error = sdmmc_select_card(sc, sf); 328 1.1.2.2 skrll if (error) 329 1.1.2.2 skrll return error; 330 1.1.2.2 skrll #endif 331 1.1.2.2 skrll 332 1.1.2.2 skrll arg |= (((sf == NULL) ? 0 : sf->number) & SD_ARG_CMD53_FUNC_MASK) << 333 1.1.2.2 skrll SD_ARG_CMD53_FUNC_SHIFT; 334 1.1.2.2 skrll arg |= (reg & SD_ARG_CMD53_REG_MASK) << 335 1.1.2.2 skrll SD_ARG_CMD53_REG_SHIFT; 336 1.1.2.2 skrll arg |= (datalen & SD_ARG_CMD53_LENGTH_MASK) << 337 1.1.2.2 skrll SD_ARG_CMD53_LENGTH_SHIFT; 338 1.1.2.2 skrll 339 1.1.2.2 skrll memset(&cmd, 0, sizeof cmd); 340 1.1.2.2 skrll cmd.c_opcode = SD_IO_RW_EXTENDED; 341 1.1.2.2 skrll cmd.c_arg = arg; 342 1.1.2.2 skrll cmd.c_flags = SCF_CMD_AC | SCF_RSP_R5; 343 1.1.2.2 skrll cmd.c_data = datap; 344 1.1.2.2 skrll cmd.c_datalen = datalen; 345 1.1.2.2 skrll cmd.c_blklen = MIN(datalen, 346 1.1.2.2 skrll sdmmc_chip_host_maxblklen(sc->sc_sct,sc->sc_sch)); 347 1.1.2.2 skrll if (!ISSET(arg, SD_ARG_CMD53_WRITE)) 348 1.1.2.2 skrll cmd.c_flags |= SCF_CMD_READ; 349 1.1.2.2 skrll 350 1.1.2.2 skrll error = sdmmc_mmc_command(sc, &cmd); 351 1.1.2.2 skrll 352 1.1.2.2 skrll return error; 353 1.1.2.2 skrll } 354 1.1.2.2 skrll 355 1.1.2.2 skrll uint8_t 356 1.1.2.2 skrll sdmmc_io_read_1(struct sdmmc_function *sf, int reg) 357 1.1.2.2 skrll { 358 1.1.2.2 skrll uint8_t data = 0; 359 1.1.2.2 skrll 360 1.1.2.2 skrll /* Don't lock */ 361 1.1.2.2 skrll 362 1.1.2.2 skrll (void)sdmmc_io_rw_direct(sf->sc, sf, reg, (u_char *)&data, 363 1.1.2.2 skrll SD_ARG_CMD52_READ); 364 1.1.2.2 skrll return data; 365 1.1.2.2 skrll } 366 1.1.2.2 skrll 367 1.1.2.2 skrll void 368 1.1.2.2 skrll sdmmc_io_write_1(struct sdmmc_function *sf, int reg, uint8_t data) 369 1.1.2.2 skrll { 370 1.1.2.2 skrll 371 1.1.2.2 skrll /* Don't lock */ 372 1.1.2.2 skrll 373 1.1.2.2 skrll (void)sdmmc_io_rw_direct(sf->sc, sf, reg, (u_char *)&data, 374 1.1.2.2 skrll SD_ARG_CMD52_WRITE); 375 1.1.2.2 skrll } 376 1.1.2.2 skrll 377 1.1.2.2 skrll uint16_t 378 1.1.2.2 skrll sdmmc_io_read_2(struct sdmmc_function *sf, int reg) 379 1.1.2.2 skrll { 380 1.1.2.2 skrll uint16_t data = 0; 381 1.1.2.2 skrll 382 1.1.2.2 skrll /* Don't lock */ 383 1.1.2.2 skrll 384 1.1.2.2 skrll (void)sdmmc_io_rw_extended(sf->sc, sf, reg, (u_char *)&data, 2, 385 1.1.2.2 skrll SD_ARG_CMD53_READ | SD_ARG_CMD53_INCREMENT); 386 1.1.2.2 skrll return data; 387 1.1.2.2 skrll } 388 1.1.2.2 skrll 389 1.1.2.2 skrll void 390 1.1.2.2 skrll sdmmc_io_write_2(struct sdmmc_function *sf, int reg, uint16_t data) 391 1.1.2.2 skrll { 392 1.1.2.2 skrll 393 1.1.2.2 skrll /* Don't lock */ 394 1.1.2.2 skrll 395 1.1.2.2 skrll (void)sdmmc_io_rw_extended(sf->sc, sf, reg, (u_char *)&data, 2, 396 1.1.2.2 skrll SD_ARG_CMD53_WRITE | SD_ARG_CMD53_INCREMENT); 397 1.1.2.2 skrll } 398 1.1.2.2 skrll 399 1.1.2.2 skrll uint32_t 400 1.1.2.2 skrll sdmmc_io_read_4(struct sdmmc_function *sf, int reg) 401 1.1.2.2 skrll { 402 1.1.2.2 skrll uint32_t data = 0; 403 1.1.2.2 skrll 404 1.1.2.2 skrll /* Don't lock */ 405 1.1.2.2 skrll 406 1.1.2.2 skrll (void)sdmmc_io_rw_extended(sf->sc, sf, reg, (u_char *)&data, 4, 407 1.1.2.2 skrll SD_ARG_CMD53_READ | SD_ARG_CMD53_INCREMENT); 408 1.1.2.2 skrll return data; 409 1.1.2.2 skrll } 410 1.1.2.2 skrll 411 1.1.2.2 skrll void 412 1.1.2.2 skrll sdmmc_io_write_4(struct sdmmc_function *sf, int reg, uint32_t data) 413 1.1.2.2 skrll { 414 1.1.2.2 skrll 415 1.1.2.2 skrll /* Don't lock */ 416 1.1.2.2 skrll 417 1.1.2.2 skrll (void)sdmmc_io_rw_extended(sf->sc, sf, reg, (u_char *)&data, 4, 418 1.1.2.2 skrll SD_ARG_CMD53_WRITE | SD_ARG_CMD53_INCREMENT); 419 1.1.2.2 skrll } 420 1.1.2.2 skrll 421 1.1.2.2 skrll 422 1.1.2.2 skrll int 423 1.1.2.2 skrll sdmmc_io_read_multi_1(struct sdmmc_function *sf, int reg, u_char *data, 424 1.1.2.2 skrll int datalen) 425 1.1.2.2 skrll { 426 1.1.2.2 skrll int error; 427 1.1.2.2 skrll 428 1.1.2.2 skrll /* Don't lock */ 429 1.1.2.2 skrll 430 1.1.2.2 skrll while (datalen > SD_ARG_CMD53_LENGTH_MAX) { 431 1.1.2.2 skrll error = sdmmc_io_rw_extended(sf->sc, sf, reg, data, 432 1.1.2.2 skrll SD_ARG_CMD53_LENGTH_MAX, SD_ARG_CMD53_READ); 433 1.1.2.2 skrll if (error) 434 1.1.2.2 skrll goto error; 435 1.1.2.2 skrll data += SD_ARG_CMD53_LENGTH_MAX; 436 1.1.2.2 skrll datalen -= SD_ARG_CMD53_LENGTH_MAX; 437 1.1.2.2 skrll } 438 1.1.2.2 skrll 439 1.1.2.2 skrll error = sdmmc_io_rw_extended(sf->sc, sf, reg, data, datalen, 440 1.1.2.2 skrll SD_ARG_CMD53_READ); 441 1.1.2.2 skrll error: 442 1.1.2.2 skrll return error; 443 1.1.2.2 skrll } 444 1.1.2.2 skrll 445 1.1.2.2 skrll int 446 1.1.2.2 skrll sdmmc_io_write_multi_1(struct sdmmc_function *sf, int reg, u_char *data, 447 1.1.2.2 skrll int datalen) 448 1.1.2.2 skrll { 449 1.1.2.2 skrll int error; 450 1.1.2.2 skrll 451 1.1.2.2 skrll /* Don't lock */ 452 1.1.2.2 skrll 453 1.1.2.2 skrll while (datalen > SD_ARG_CMD53_LENGTH_MAX) { 454 1.1.2.2 skrll error = sdmmc_io_rw_extended(sf->sc, sf, reg, data, 455 1.1.2.2 skrll SD_ARG_CMD53_LENGTH_MAX, SD_ARG_CMD53_WRITE); 456 1.1.2.2 skrll if (error) 457 1.1.2.2 skrll goto error; 458 1.1.2.2 skrll data += SD_ARG_CMD53_LENGTH_MAX; 459 1.1.2.2 skrll datalen -= SD_ARG_CMD53_LENGTH_MAX; 460 1.1.2.2 skrll } 461 1.1.2.2 skrll 462 1.1.2.2 skrll error = sdmmc_io_rw_extended(sf->sc, sf, reg, data, datalen, 463 1.1.2.2 skrll SD_ARG_CMD53_WRITE); 464 1.1.2.2 skrll error: 465 1.1.2.2 skrll return error; 466 1.1.2.2 skrll } 467 1.1.2.2 skrll 468 1.1.2.2 skrll #if 0 469 1.1.2.2 skrll static int 470 1.1.2.2 skrll sdmmc_io_xchg(struct sdmmc_softc *sc, struct sdmmc_function *sf, 471 1.1.2.2 skrll int reg, u_char *datap) 472 1.1.2.2 skrll { 473 1.1.2.2 skrll 474 1.1.2.2 skrll /* Don't lock */ 475 1.1.2.2 skrll 476 1.1.2.2 skrll return sdmmc_io_rw_direct(sc, sf, reg, datap, 477 1.1.2.2 skrll SD_ARG_CMD52_WRITE|SD_ARG_CMD52_EXCHANGE); 478 1.1.2.2 skrll } 479 1.1.2.2 skrll #endif 480 1.1.2.2 skrll 481 1.1.2.2 skrll /* 482 1.1.2.2 skrll * Reset the I/O functions of the card. 483 1.1.2.2 skrll */ 484 1.1.2.2 skrll static void 485 1.1.2.2 skrll sdmmc_io_reset(struct sdmmc_softc *sc) 486 1.1.2.2 skrll { 487 1.1.2.2 skrll 488 1.1.2.2 skrll /* Don't lock */ 489 1.1.2.2 skrll #if 0 /* XXX command fails */ 490 1.1.2.2 skrll (void)sdmmc_io_write(sc, NULL, SD_IO_REG_CCCR_CTL, CCCR_CTL_RES); 491 1.1.2.2 skrll sdmmc_delay(100000); 492 1.1.2.2 skrll #endif 493 1.1.2.2 skrll } 494 1.1.2.2 skrll 495 1.1.2.2 skrll /* 496 1.1.2.2 skrll * Get or set the card's I/O OCR value (SDIO). 497 1.1.2.2 skrll */ 498 1.1.2.2 skrll static int 499 1.1.2.2 skrll sdmmc_io_send_op_cond(struct sdmmc_softc *sc, u_int32_t ocr, u_int32_t *ocrp) 500 1.1.2.2 skrll { 501 1.1.2.2 skrll struct sdmmc_command cmd; 502 1.1.2.2 skrll int error; 503 1.1.2.2 skrll int retry; 504 1.1.2.2 skrll 505 1.1.2.2 skrll DPRINTF(("sdmmc_io_send_op_cond: ocr = %#x\n", ocr)); 506 1.1.2.2 skrll 507 1.1.2.2 skrll /* Don't lock */ 508 1.1.2.2 skrll 509 1.1.2.2 skrll /* 510 1.1.2.2 skrll * If we change the OCR value, retry the command until the OCR 511 1.1.2.2 skrll * we receive in response has the "CARD BUSY" bit set, meaning 512 1.1.2.2 skrll * that all cards are ready for identification. 513 1.1.2.2 skrll */ 514 1.1.2.2 skrll for (retry = 0; retry < 100; retry++) { 515 1.1.2.2 skrll memset(&cmd, 0, sizeof cmd); 516 1.1.2.2 skrll cmd.c_opcode = SD_IO_SEND_OP_COND; 517 1.1.2.2 skrll cmd.c_arg = ocr; 518 1.1.2.2 skrll cmd.c_flags = SCF_CMD_BCR | SCF_RSP_R4; 519 1.1.2.2 skrll 520 1.1.2.2 skrll error = sdmmc_mmc_command(sc, &cmd); 521 1.1.2.2 skrll if (error) 522 1.1.2.2 skrll break; 523 1.1.2.2 skrll if (ISSET(MMC_R4(cmd.c_resp), SD_IO_OCR_MEM_READY) || ocr == 0) 524 1.1.2.2 skrll break; 525 1.1.2.2 skrll 526 1.1.2.2 skrll error = ETIMEDOUT; 527 1.1.2.2 skrll sdmmc_delay(10000); 528 1.1.2.2 skrll } 529 1.1.2.2 skrll if (error == 0 && ocrp != NULL) 530 1.1.2.2 skrll *ocrp = MMC_R4(cmd.c_resp); 531 1.1.2.2 skrll 532 1.1.2.2 skrll DPRINTF(("sdmmc_io_send_op_cond: error = %d\n", error)); 533 1.1.2.2 skrll 534 1.1.2.2 skrll return error; 535 1.1.2.2 skrll } 536 1.1.2.2 skrll 537 1.1.2.2 skrll /* 538 1.1.2.2 skrll * Card interrupt handling 539 1.1.2.2 skrll */ 540 1.1.2.2 skrll 541 1.1.2.2 skrll void 542 1.1.2.2 skrll sdmmc_intr_enable(struct sdmmc_function *sf) 543 1.1.2.2 skrll { 544 1.1.2.2 skrll struct sdmmc_softc *sc = sf->sc; 545 1.1.2.2 skrll struct sdmmc_function *sf0 = sc->sc_fn0; 546 1.1.2.2 skrll uint8_t reg; 547 1.1.2.2 skrll 548 1.1.2.2 skrll SDMMC_LOCK(sc); 549 1.1.2.2 skrll reg = sdmmc_io_read_1(sf0, SD_IO_CCCR_FN_INTEN); 550 1.1.2.2 skrll reg |= 1 << sf->number; 551 1.1.2.2 skrll sdmmc_io_write_1(sf0, SD_IO_CCCR_FN_INTEN, reg); 552 1.1.2.2 skrll SDMMC_UNLOCK(sc); 553 1.1.2.2 skrll } 554 1.1.2.2 skrll 555 1.1.2.2 skrll void 556 1.1.2.2 skrll sdmmc_intr_disable(struct sdmmc_function *sf) 557 1.1.2.2 skrll { 558 1.1.2.2 skrll struct sdmmc_softc *sc = sf->sc; 559 1.1.2.2 skrll struct sdmmc_function *sf0 = sc->sc_fn0; 560 1.1.2.2 skrll uint8_t reg; 561 1.1.2.2 skrll 562 1.1.2.2 skrll SDMMC_LOCK(sc); 563 1.1.2.2 skrll reg = sdmmc_io_read_1(sf0, SD_IO_CCCR_FN_INTEN); 564 1.1.2.2 skrll reg &= ~(1 << sf->number); 565 1.1.2.2 skrll sdmmc_io_write_1(sf0, SD_IO_CCCR_FN_INTEN, reg); 566 1.1.2.2 skrll SDMMC_UNLOCK(sc); 567 1.1.2.2 skrll } 568 1.1.2.2 skrll 569 1.1.2.2 skrll /* 570 1.1.2.2 skrll * Establish a handler for the SDIO card interrupt. Because the 571 1.1.2.2 skrll * interrupt may be shared with different SDIO functions, multiple 572 1.1.2.2 skrll * handlers can be established. 573 1.1.2.2 skrll */ 574 1.1.2.2 skrll void * 575 1.1.2.2 skrll sdmmc_intr_establish(device_t dev, int (*fun)(void *), void *arg, 576 1.1.2.2 skrll const char *name) 577 1.1.2.2 skrll { 578 1.1.2.2 skrll struct sdmmc_softc *sc = device_private(dev); 579 1.1.2.2 skrll struct sdmmc_intr_handler *ih; 580 1.1.2.2 skrll int s; 581 1.1.2.2 skrll 582 1.1.2.2 skrll if (sc->sc_sct->card_enable_intr == NULL) 583 1.1.2.2 skrll return NULL; 584 1.1.2.2 skrll 585 1.1.2.2 skrll ih = malloc(sizeof *ih, M_DEVBUF, M_WAITOK|M_CANFAIL|M_ZERO); 586 1.1.2.2 skrll if (ih == NULL) 587 1.1.2.2 skrll return NULL; 588 1.1.2.2 skrll 589 1.1.2.2 skrll ih->ih_name = malloc(strlen(name) + 1, M_DEVBUF, 590 1.1.2.2 skrll M_WAITOK|M_CANFAIL|M_ZERO); 591 1.1.2.2 skrll if (ih->ih_name == NULL) { 592 1.1.2.2 skrll free(ih, M_DEVBUF); 593 1.1.2.2 skrll return NULL; 594 1.1.2.2 skrll } 595 1.1.2.2 skrll strlcpy(ih->ih_name, name, strlen(name)); 596 1.1.2.2 skrll ih->ih_softc = sc; 597 1.1.2.2 skrll ih->ih_fun = fun; 598 1.1.2.2 skrll ih->ih_arg = arg; 599 1.1.2.2 skrll 600 1.1.2.2 skrll s = splhigh(); 601 1.1.2.2 skrll if (TAILQ_EMPTY(&sc->sc_intrq)) { 602 1.1.2.2 skrll sdmmc_intr_enable(sc->sc_fn0); 603 1.1.2.2 skrll sdmmc_chip_card_enable_intr(sc->sc_sct, sc->sc_sch, 1); 604 1.1.2.2 skrll } 605 1.1.2.2 skrll TAILQ_INSERT_TAIL(&sc->sc_intrq, ih, entry); 606 1.1.2.2 skrll splx(s); 607 1.1.2.2 skrll 608 1.1.2.2 skrll return ih; 609 1.1.2.2 skrll } 610 1.1.2.2 skrll 611 1.1.2.2 skrll /* 612 1.1.2.2 skrll * Disestablish the given handler. 613 1.1.2.2 skrll */ 614 1.1.2.2 skrll void 615 1.1.2.2 skrll sdmmc_intr_disestablish(void *cookie) 616 1.1.2.2 skrll { 617 1.1.2.2 skrll struct sdmmc_intr_handler *ih = cookie; 618 1.1.2.2 skrll struct sdmmc_softc *sc = ih->ih_softc; 619 1.1.2.2 skrll int s; 620 1.1.2.2 skrll 621 1.1.2.2 skrll if (sc->sc_sct->card_enable_intr == NULL) 622 1.1.2.2 skrll return; 623 1.1.2.2 skrll 624 1.1.2.2 skrll s = splhigh(); 625 1.1.2.2 skrll TAILQ_REMOVE(&sc->sc_intrq, ih, entry); 626 1.1.2.2 skrll if (TAILQ_EMPTY(&sc->sc_intrq)) { 627 1.1.2.2 skrll sdmmc_chip_card_enable_intr(sc->sc_sct, sc->sc_sch, 0); 628 1.1.2.2 skrll sdmmc_intr_disable(sc->sc_fn0); 629 1.1.2.2 skrll } 630 1.1.2.2 skrll splx(s); 631 1.1.2.2 skrll 632 1.1.2.2 skrll free(ih->ih_name, M_DEVBUF); 633 1.1.2.2 skrll free(ih, M_DEVBUF); 634 1.1.2.2 skrll } 635 1.1.2.2 skrll 636 1.1.2.2 skrll /* 637 1.1.2.2 skrll * Call established SDIO card interrupt handlers. The host controller 638 1.1.2.2 skrll * must call this function from its own interrupt handler to handle an 639 1.1.2.2 skrll * SDIO interrupt from the card. 640 1.1.2.2 skrll */ 641 1.1.2.2 skrll void 642 1.1.2.2 skrll sdmmc_card_intr(device_t dev) 643 1.1.2.2 skrll { 644 1.1.2.2 skrll struct sdmmc_softc *sc = device_private(dev); 645 1.1.2.2 skrll 646 1.1.2.2 skrll if (sc->sc_sct->card_enable_intr) { 647 1.1.2.2 skrll mutex_enter(&sc->sc_intr_task_mtx); 648 1.1.2.2 skrll if (!sdmmc_task_pending(&sc->sc_intr_task)) 649 1.1.2.2 skrll sdmmc_add_task(sc, &sc->sc_intr_task); 650 1.1.2.2 skrll mutex_exit(&sc->sc_intr_task_mtx); 651 1.1.2.2 skrll } 652 1.1.2.2 skrll } 653 1.1.2.2 skrll 654 1.1.2.2 skrll void 655 1.1.2.2 skrll sdmmc_intr_task(void *arg) 656 1.1.2.2 skrll { 657 1.1.2.2 skrll struct sdmmc_softc *sc = (struct sdmmc_softc *)arg; 658 1.1.2.2 skrll struct sdmmc_intr_handler *ih; 659 1.1.2.2 skrll int s; 660 1.1.2.2 skrll 661 1.1.2.2 skrll s = splsdmmc(); 662 1.1.2.2 skrll TAILQ_FOREACH(ih, &sc->sc_intrq, entry) { 663 1.1.2.2 skrll splx(s); 664 1.1.2.2 skrll /* XXX examine return value and do evcount stuff*/ 665 1.1.2.2 skrll (void)(*ih->ih_fun)(ih->ih_arg); 666 1.1.2.2 skrll s = splsdmmc(); 667 1.1.2.2 skrll } 668 1.1.2.2 skrll sdmmc_chip_card_intr_ack(sc->sc_sct, sc->sc_sch); 669 1.1.2.2 skrll splx(s); 670 1.1.2.2 skrll } 671
Indexes created Fri Oct 03 02:09:57 GMT 2025