/* $NetBSD: sdmmc_mem.c,v 1.20.2.1 2012/08/08 06:18:59 jdc Exp $ */ /* $OpenBSD: sdmmc_mem.c,v 1.10 2009/01/09 10:55:22 jsg Exp $ */ /* * Copyright (c) 2006 Uwe Stuehler * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /*- * Copyright (C) 2007, 2008, 2009, 2010 NONAKA Kimihiro * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* Routines for SD/MMC memory cards. */ #include __KERNEL_RCSID(0, "$NetBSD: sdmmc_mem.c,v 1.20.2.1 2012/08/08 06:18:59 jdc Exp $"); #ifdef _KERNEL_OPT #include "opt_sdmmc.h" #endif #include #include #include #include #include #include #include #include #ifdef SDMMC_DEBUG #define DPRINTF(s) do { printf s; } while (/*CONSTCOND*/0) #else #define DPRINTF(s) do {} while (/*CONSTCOND*/0) #endif static int sdmmc_mem_sd_init(struct sdmmc_softc *, struct sdmmc_function *); static int sdmmc_mem_mmc_init(struct sdmmc_softc *, struct sdmmc_function *); static int sdmmc_mem_send_cid(struct sdmmc_softc *, sdmmc_response *); static int sdmmc_mem_send_csd(struct sdmmc_softc *, struct sdmmc_function *, sdmmc_response *); static int sdmmc_mem_send_scr(struct sdmmc_softc *, struct sdmmc_function *, uint32_t scr[2]); static int sdmmc_mem_decode_scr(struct sdmmc_softc *, struct sdmmc_function *); static int sdmmc_mem_send_cxd_data(struct sdmmc_softc *, int, void *, size_t); static int sdmmc_set_bus_width(struct sdmmc_function *, int); static int sdmmc_mem_sd_switch(struct sdmmc_function *, int, int, int, void *); static int sdmmc_mem_mmc_switch(struct sdmmc_function *, uint8_t, uint8_t, uint8_t); static int sdmmc_mem_spi_read_ocr(struct sdmmc_softc *, uint32_t, uint32_t *); static int sdmmc_mem_single_read_block(struct sdmmc_function *, uint32_t, u_char *, size_t); static int sdmmc_mem_single_write_block(struct sdmmc_function *, uint32_t, u_char *, size_t); static int sdmmc_mem_read_block_subr(struct sdmmc_function *, uint32_t, u_char *, size_t); static int sdmmc_mem_write_block_subr(struct sdmmc_function *, uint32_t, u_char *, size_t); /* * Initialize SD/MMC memory cards and memory in SDIO "combo" cards. */ int sdmmc_mem_enable(struct sdmmc_softc *sc) { uint32_t host_ocr; uint32_t card_ocr; uint32_t ocr = 0; int error; SDMMC_LOCK(sc); /* Set host mode to SD "combo" card or SD memory-only. */ SET(sc->sc_flags, SMF_SD_MODE|SMF_MEM_MODE); if (ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) sdmmc_spi_chip_initialize(sc->sc_spi_sct, sc->sc_sch); /* Reset memory (*must* do that before CMD55 or CMD1). */ sdmmc_go_idle_state(sc); /* Check SD Ver.2 */ error = sdmmc_mem_send_if_cond(sc, 0x1aa, &card_ocr); if (error == 0 && card_ocr == 0x1aa) SET(ocr, MMC_OCR_HCS); /* * Read the SD/MMC memory OCR value by issuing CMD55 followed * by ACMD41 to read the OCR value from memory-only SD cards. * MMC cards will not respond to CMD55 or ACMD41 and this is * how we distinguish them from SD cards. */ mmc_mode: error = sdmmc_mem_send_op_cond(sc, ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE) ? ocr : 0, &card_ocr); if (error) { if (ISSET(sc->sc_flags, SMF_SD_MODE) && !ISSET(sc->sc_flags, SMF_IO_MODE)) { /* Not a SD card, switch to MMC mode. */ DPRINTF(("%s: switch to MMC mode\n", SDMMCDEVNAME(sc))); CLR(sc->sc_flags, SMF_SD_MODE); goto mmc_mode; } if (!ISSET(sc->sc_flags, SMF_SD_MODE)) { DPRINTF(("%s: couldn't read memory OCR\n", SDMMCDEVNAME(sc))); goto out; } else { /* Not a "combo" card. */ CLR(sc->sc_flags, SMF_MEM_MODE); error = 0; goto out; } } if (ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { /* get card OCR */ error = sdmmc_mem_spi_read_ocr(sc, ocr, &card_ocr); if (error) { DPRINTF(("%s: couldn't read SPI memory OCR\n", SDMMCDEVNAME(sc))); goto out; } } /* Set the lowest voltage supported by the card and host. */ host_ocr = sdmmc_chip_host_ocr(sc->sc_sct, sc->sc_sch); error = sdmmc_set_bus_power(sc, host_ocr, card_ocr); if (error) { DPRINTF(("%s: couldn't supply voltage requested by card\n", SDMMCDEVNAME(sc))); goto out; } host_ocr &= card_ocr; host_ocr |= ocr; /* Send the new OCR value until all cards are ready. */ error = sdmmc_mem_send_op_cond(sc, host_ocr, NULL); if (error) { DPRINTF(("%s: couldn't send memory OCR\n", SDMMCDEVNAME(sc))); goto out; } out: SDMMC_UNLOCK(sc); return error; } /* * Read the CSD and CID from all cards and assign each card a unique * relative card address (RCA). CMD2 is ignored by SDIO-only cards. */ void sdmmc_mem_scan(struct sdmmc_softc *sc) { sdmmc_response resp; struct sdmmc_function *sf; uint16_t next_rca; int error; int retry; SDMMC_LOCK(sc); /* * CMD2 is a broadcast command understood by SD cards and MMC * cards. All cards begin to respond to the command, but back * off if another card drives the CMD line to a different level. * Only one card will get its entire response through. That * card remains silent once it has been assigned a RCA. */ for (retry = 0; retry < 100; retry++) { error = sdmmc_mem_send_cid(sc, &resp); if (error) { if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE) && error == ETIMEDOUT) { /* No more cards there. */ break; } DPRINTF(("%s: couldn't read CID\n", SDMMCDEVNAME(sc))); break; } /* In MMC mode, find the next available RCA. */ next_rca = 1; if (!ISSET(sc->sc_flags, SMF_SD_MODE)) { SIMPLEQ_FOREACH(sf, &sc->sf_head, sf_list) next_rca++; } /* Allocate a sdmmc_function structure. */ sf = sdmmc_function_alloc(sc); sf->rca = next_rca; /* * Remember the CID returned in the CMD2 response for * later decoding. */ memcpy(sf->raw_cid, resp, sizeof(sf->raw_cid)); /* * Silence the card by assigning it a unique RCA, or * querying it for its RCA in the case of SD. */ if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { if (sdmmc_set_relative_addr(sc, sf) != 0) { aprint_error_dev(sc->sc_dev, "couldn't set mem RCA\n"); sdmmc_function_free(sf); break; } } /* * If this is a memory-only card, the card responding * first becomes an alias for SDIO function 0. */ if (sc->sc_fn0 == NULL) sc->sc_fn0 = sf; SIMPLEQ_INSERT_TAIL(&sc->sf_head, sf, sf_list); /* only one function in SPI mode */ if (ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) break; } if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) /* Go to Data Transfer Mode, if possible. */ sdmmc_chip_bus_rod(sc->sc_sct, sc->sc_sch, 0); /* * All cards are either inactive or awaiting further commands. * Read the CSDs and decode the raw CID for each card. */ SIMPLEQ_FOREACH(sf, &sc->sf_head, sf_list) { error = sdmmc_mem_send_csd(sc, sf, &resp); if (error) { SET(sf->flags, SFF_ERROR); continue; } if (sdmmc_decode_csd(sc, resp, sf) != 0 || sdmmc_decode_cid(sc, sf->raw_cid, sf) != 0) { SET(sf->flags, SFF_ERROR); continue; } #ifdef SDMMC_DEBUG printf("%s: CID: ", SDMMCDEVNAME(sc)); sdmmc_print_cid(&sf->cid); #endif } SDMMC_UNLOCK(sc); } int sdmmc_decode_csd(struct sdmmc_softc *sc, sdmmc_response resp, struct sdmmc_function *sf) { /* TRAN_SPEED(2:0): transfer rate exponent */ static const int speed_exponent[8] = { 100 * 1, /* 100 Kbits/s */ 1 * 1000, /* 1 Mbits/s */ 10 * 1000, /* 10 Mbits/s */ 100 * 1000, /* 100 Mbits/s */ 0, 0, 0, 0, }; /* TRAN_SPEED(6:3): time mantissa */ static const int speed_mantissa[16] = { 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80, }; struct sdmmc_csd *csd = &sf->csd; int e, m; if (ISSET(sc->sc_flags, SMF_SD_MODE)) { /* * CSD version 1.0 corresponds to SD system * specification version 1.0 - 1.10. (SanDisk, 3.5.3) */ csd->csdver = SD_CSD_CSDVER(resp); switch (csd->csdver) { case SD_CSD_CSDVER_2_0: DPRINTF(("%s: SD Ver.2.0\n", SDMMCDEVNAME(sc))); SET(sf->flags, SFF_SDHC); csd->capacity = SD_CSD_V2_CAPACITY(resp); csd->read_bl_len = SD_CSD_V2_BL_LEN; csd->ccc = SD_CSD_CCC(resp); break; case SD_CSD_CSDVER_1_0: DPRINTF(("%s: SD Ver.1.0\n", SDMMCDEVNAME(sc))); csd->capacity = SD_CSD_CAPACITY(resp); csd->read_bl_len = SD_CSD_READ_BL_LEN(resp); break; default: aprint_error_dev(sc->sc_dev, "unknown SD CSD structure version 0x%x\n", csd->csdver); return 1; } csd->mmcver = SD_CSD_MMCVER(resp); csd->write_bl_len = SD_CSD_WRITE_BL_LEN(resp); csd->r2w_factor = SD_CSD_R2W_FACTOR(resp); e = SD_CSD_SPEED_EXP(resp); m = SD_CSD_SPEED_MANT(resp); csd->tran_speed = speed_exponent[e] * speed_mantissa[m] / 10; } else { csd->csdver = MMC_CSD_CSDVER(resp); if (csd->csdver == MMC_CSD_CSDVER_1_0) { aprint_error_dev(sc->sc_dev, "unknown MMC CSD structure version 0x%x\n", csd->csdver); return 1; } csd->mmcver = MMC_CSD_MMCVER(resp); csd->capacity = MMC_CSD_CAPACITY(resp); csd->read_bl_len = MMC_CSD_READ_BL_LEN(resp); csd->write_bl_len = MMC_CSD_WRITE_BL_LEN(resp); csd->r2w_factor = MMC_CSD_R2W_FACTOR(resp); e = MMC_CSD_TRAN_SPEED_EXP(resp); m = MMC_CSD_TRAN_SPEED_MANT(resp); csd->tran_speed = speed_exponent[e] * speed_mantissa[m] / 10; } if ((1 << csd->read_bl_len) > SDMMC_SECTOR_SIZE) csd->capacity *= (1 << csd->read_bl_len) / SDMMC_SECTOR_SIZE; #ifdef SDMMC_DUMP_CSD sdmmc_print_csd(resp, csd); #endif return 0; } int sdmmc_decode_cid(struct sdmmc_softc *sc, sdmmc_response resp, struct sdmmc_function *sf) { struct sdmmc_cid *cid = &sf->cid; if (ISSET(sc->sc_flags, SMF_SD_MODE)) { cid->mid = SD_CID_MID(resp); cid->oid = SD_CID_OID(resp); SD_CID_PNM_CPY(resp, cid->pnm); cid->rev = SD_CID_REV(resp); cid->psn = SD_CID_PSN(resp); cid->mdt = SD_CID_MDT(resp); } else { switch(sf->csd.mmcver) { case MMC_CSD_MMCVER_1_0: case MMC_CSD_MMCVER_1_4: cid->mid = MMC_CID_MID_V1(resp); MMC_CID_PNM_V1_CPY(resp, cid->pnm); cid->rev = MMC_CID_REV_V1(resp); cid->psn = MMC_CID_PSN_V1(resp); cid->mdt = MMC_CID_MDT_V1(resp); break; case MMC_CSD_MMCVER_2_0: case MMC_CSD_MMCVER_3_1: case MMC_CSD_MMCVER_4_0: cid->mid = MMC_CID_MID_V2(resp); cid->oid = MMC_CID_OID_V2(resp); MMC_CID_PNM_V2_CPY(resp, cid->pnm); cid->psn = MMC_CID_PSN_V2(resp); break; default: aprint_error_dev(sc->sc_dev, "unknown MMC version %d\n", sf->csd.mmcver); return 1; } } return 0; } void sdmmc_print_cid(struct sdmmc_cid *cid) { printf("mid=0x%02x oid=0x%04x pnm=\"%s\" rev=0x%02x psn=0x%08x" " mdt=%03x\n", cid->mid, cid->oid, cid->pnm, cid->rev, cid->psn, cid->mdt); } #ifdef SDMMC_DUMP_CSD void sdmmc_print_csd(sdmmc_response resp, struct sdmmc_csd *csd) { printf("csdver = %d\n", csd->csdver); printf("mmcver = %d\n", csd->mmcver); printf("capacity = 0x%08x\n", csd->capacity); printf("read_bl_len = %d\n", csd->read_bl_len); printf("write_cl_len = %d\n", csd->write_bl_len); printf("r2w_factor = %d\n", csd->r2w_factor); printf("tran_speed = %d\n", csd->tran_speed); printf("ccc = 0x%x\n", csd->ccc); } #endif /* * Initialize a SD/MMC memory card. */ int sdmmc_mem_init(struct sdmmc_softc *sc, struct sdmmc_function *sf) { int error = 0; SDMMC_LOCK(sc); if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { error = sdmmc_select_card(sc, sf); if (error) goto out; } if (!ISSET(sf->flags, SFF_SDHC)) { error = sdmmc_mem_set_blocklen(sc, sf); if (error) goto out; } if (ISSET(sc->sc_flags, SMF_SD_MODE)) error = sdmmc_mem_sd_init(sc, sf); else error = sdmmc_mem_mmc_init(sc, sf); out: SDMMC_UNLOCK(sc); return error; } /* * Get or set the card's memory OCR value (SD or MMC). */ int sdmmc_mem_send_op_cond(struct sdmmc_softc *sc, uint32_t ocr, uint32_t *ocrp) { struct sdmmc_command cmd; int error; int retry; /* Don't lock */ /* * If we change the OCR value, retry the command until the OCR * we receive in response has the "CARD BUSY" bit set, meaning * that all cards are ready for identification. */ for (retry = 0; retry < 100; retry++) { memset(&cmd, 0, sizeof(cmd)); cmd.c_arg = !ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE) ? ocr : (ocr & MMC_OCR_HCS); cmd.c_flags = SCF_CMD_BCR | SCF_RSP_R3 | SCF_RSP_SPI_R1; if (ISSET(sc->sc_flags, SMF_SD_MODE)) { cmd.c_opcode = SD_APP_OP_COND; error = sdmmc_app_command(sc, NULL, &cmd); } else { cmd.c_opcode = MMC_SEND_OP_COND; error = sdmmc_mmc_command(sc, &cmd); } if (error) break; if (ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { if (!ISSET(MMC_SPI_R1(cmd.c_resp), R1_SPI_IDLE)) break; } else { if (ISSET(MMC_R3(cmd.c_resp), MMC_OCR_MEM_READY) || ocr == 0) break; } error = ETIMEDOUT; sdmmc_delay(10000); } if (error == 0 && ocrp != NULL && !ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) *ocrp = MMC_R3(cmd.c_resp); DPRINTF(("%s: sdmmc_mem_send_op_cond: error=%d, ocr=%#x\n", SDMMCDEVNAME(sc), error, MMC_R3(cmd.c_resp))); return error; } int sdmmc_mem_send_if_cond(struct sdmmc_softc *sc, uint32_t ocr, uint32_t *ocrp) { struct sdmmc_command cmd; int error; /* Don't lock */ memset(&cmd, 0, sizeof(cmd)); cmd.c_arg = ocr; cmd.c_flags = SCF_CMD_BCR | SCF_RSP_R7 | SCF_RSP_SPI_R7; cmd.c_opcode = SD_SEND_IF_COND; error = sdmmc_mmc_command(sc, &cmd); if (error == 0 && ocrp != NULL) { if (ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { *ocrp = MMC_SPI_R7(cmd.c_resp); } else { *ocrp = MMC_R7(cmd.c_resp); } DPRINTF(("%s: sdmmc_mem_send_if_cond: error=%d, ocr=%#x\n", SDMMCDEVNAME(sc), error, *ocrp)); } return error; } /* * Set the read block length appropriately for this card, according to * the card CSD register value. */ int sdmmc_mem_set_blocklen(struct sdmmc_softc *sc, struct sdmmc_function *sf) { struct sdmmc_command cmd; int error; /* Don't lock */ memset(&cmd, 0, sizeof(cmd)); cmd.c_opcode = MMC_SET_BLOCKLEN; cmd.c_arg = SDMMC_SECTOR_SIZE; cmd.c_flags = SCF_CMD_AC | SCF_RSP_R1 | SCF_RSP_SPI_R1; error = sdmmc_mmc_command(sc, &cmd); DPRINTF(("%s: sdmmc_mem_set_blocklen: read_bl_len=%d sector_size=%d\n", SDMMCDEVNAME(sc), 1 << sf->csd.read_bl_len, SDMMC_SECTOR_SIZE)); return error; } static int sdmmc_mem_sd_init(struct sdmmc_softc *sc, struct sdmmc_function *sf) { static const struct { int v; int freq; } switch_group0_functions[] = { /* Default/SDR12 */ { MMC_OCR_1_7V_1_8V | MMC_OCR_1_8V_1_9V | MMC_OCR_3_2V_3_3V | MMC_OCR_3_3V_3_4V, 25000 }, /* High-Speed/SDR25 */ { MMC_OCR_1_7V_1_8V | MMC_OCR_1_8V_1_9V | MMC_OCR_3_2V_3_3V | MMC_OCR_3_3V_3_4V, 50000 }, /* SDR50 */ { MMC_OCR_1_7V_1_8V | MMC_OCR_1_8V_1_9V, 100000 }, /* SDR104 */ { MMC_OCR_1_7V_1_8V | MMC_OCR_1_8V_1_9V, 208000 }, /* DDR50 */ { MMC_OCR_1_7V_1_8V | MMC_OCR_1_8V_1_9V, 50000 }, }; int host_ocr, support_func, best_func, error, g, i; char status[64]; error = sdmmc_mem_send_scr(sc, sf, sf->raw_scr); if (error) { aprint_error_dev(sc->sc_dev, "SD_SEND_SCR send failed.\n"); return error; } error = sdmmc_mem_decode_scr(sc, sf); if (error) return error; if (ISSET(sc->sc_caps, SMC_CAPS_4BIT_MODE) && ISSET(sf->scr.bus_width, SCR_SD_BUS_WIDTHS_4BIT)) { DPRINTF(("%s: change bus width\n", SDMMCDEVNAME(sc))); error = sdmmc_set_bus_width(sf, 4); if (error) { aprint_error_dev(sc->sc_dev, "can't change bus width (%d bit)\n", 4); return error; } sf->width = 4; } if (sf->scr.sd_spec >= SCR_SD_SPEC_VER_1_10 && ISSET(sf->csd.ccc, SD_CSD_CCC_SWITCH)) { DPRINTF(("%s: switch func mode 0\n", SDMMCDEVNAME(sc))); error = sdmmc_mem_sd_switch(sf, 0, 1, 0, status); if (error) { aprint_error_dev(sc->sc_dev, "switch func mode 0 failed\n"); return error; } host_ocr = sdmmc_chip_host_ocr(sc->sc_sct, sc->sc_sch); support_func = SFUNC_STATUS_GROUP(status, 1); best_func = 0; for (i = 0, g = 1; i < __arraycount(switch_group0_functions); i++, g <<= 1) { if (!(switch_group0_functions[i].v & host_ocr)) continue; if (g & support_func) best_func = i; } if (ISSET(sc->sc_caps, SMC_CAPS_SD_HIGHSPEED) && best_func != 0) { DPRINTF(("%s: switch func mode 1(func=%d)\n", SDMMCDEVNAME(sc), best_func)); error = sdmmc_mem_sd_switch(sf, 1, 1, best_func, status); if (error) { aprint_error_dev(sc->sc_dev, "switch func mode 1 failed:" " group 1 function %d(0x%2x)\n", best_func, support_func); return error; } sf->csd.tran_speed = switch_group0_functions[best_func].freq; /* Wait 400KHz x 8 clock */ delay(1); } } /* change bus clock */ if (sc->sc_busclk > sf->csd.tran_speed) sc->sc_busclk = sf->csd.tran_speed; error = sdmmc_chip_bus_clock(sc->sc_sct, sc->sc_sch, sc->sc_busclk); if (error) { aprint_error_dev(sc->sc_dev, "can't change bus clock\n"); return error; } return 0; } static int sdmmc_mem_mmc_init(struct sdmmc_softc *sc, struct sdmmc_function *sf) { int width, value, hs_timing, error; char ext_csd[512]; if (sf->csd.mmcver >= MMC_CSD_MMCVER_4_0) { error = sdmmc_mem_send_cxd_data(sc, MMC_SEND_EXT_CSD, ext_csd, sizeof(ext_csd)); if (error) { aprint_error_dev(sc->sc_dev, "can't read EXT_CSD\n"); return error; } if ((sf->csd.csdver == MMC_CSD_CSDVER_EXT_CSD) && (ext_csd[EXT_CSD_STRUCTURE] > EXT_CSD_STRUCTURE_VER_1_2)) { aprint_error_dev(sc->sc_dev, "unrecognised future version (%d)\n", ext_csd[EXT_CSD_STRUCTURE]); return error; } hs_timing = 0; switch (ext_csd[EXT_CSD_CARD_TYPE]) { case EXT_CSD_CARD_TYPE_26M: sf->csd.tran_speed = 26000; /* 26MHz */ break; case EXT_CSD_CARD_TYPE_52M | EXT_CSD_CARD_TYPE_26M: sf->csd.tran_speed = 52000; /* 52MHz */ hs_timing = 1; break; default: aprint_error_dev(sc->sc_dev, "unknwon CARD_TYPE: 0x%x\n", ext_csd[EXT_CSD_CARD_TYPE]); return error; } if (!ISSET(sc->sc_caps, SMC_CAPS_MMC_HIGHSPEED)) { hs_timing = 0; } if (hs_timing) { error = sdmmc_mem_mmc_switch(sf, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, hs_timing); if (error) { aprint_error_dev(sc->sc_dev, "can't change high speed\n"); return error; } } if (sc->sc_busclk > sf->csd.tran_speed) sc->sc_busclk = sf->csd.tran_speed; error = sdmmc_chip_bus_clock(sc->sc_sct, sc->sc_sch, sc->sc_busclk); if (error) { aprint_error_dev(sc->sc_dev, "can't change bus clock\n"); return error; } if (hs_timing) { error = sdmmc_mem_send_cxd_data(sc, MMC_SEND_EXT_CSD, ext_csd, sizeof(ext_csd)); if (error) { aprint_error_dev(sc->sc_dev, "can't re-read EXT_CSD\n"); return error; } if (ext_csd[EXT_CSD_HS_TIMING] != hs_timing) { aprint_error_dev(sc->sc_dev, "HS_TIMING set failed\n"); return EINVAL; } } if (ISSET(sc->sc_caps, SMC_CAPS_8BIT_MODE)) { width = 8; value = EXT_CSD_BUS_WIDTH_8; } else if (ISSET(sc->sc_caps, SMC_CAPS_4BIT_MODE)) { width = 4; value = EXT_CSD_BUS_WIDTH_4; } else { width = 1; value = EXT_CSD_BUS_WIDTH_1; } if (width != 1) { error = sdmmc_mem_mmc_switch(sf, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, value); if (error == 0) error = sdmmc_chip_bus_width(sc->sc_sct, sc->sc_sch, width); else { DPRINTF(("%s: can't change bus width" " (%d bit)\n", SDMMCDEVNAME(sc), width)); return error; } /* XXXX: need bus test? (using by CMD14 & CMD19) */ } sf->width = width; } else { if (sc->sc_busclk > sf->csd.tran_speed) sc->sc_busclk = sf->csd.tran_speed; error = sdmmc_chip_bus_clock(sc->sc_sct, sc->sc_sch, sc->sc_busclk); if (error) { aprint_error_dev(sc->sc_dev, "can't change bus clock\n"); return error; } } return 0; } static int sdmmc_mem_send_cid(struct sdmmc_softc *sc, sdmmc_response *resp) { struct sdmmc_command cmd; int error; if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { memset(&cmd, 0, sizeof cmd); cmd.c_opcode = MMC_ALL_SEND_CID; cmd.c_flags = SCF_CMD_BCR | SCF_RSP_R2; error = sdmmc_mmc_command(sc, &cmd); } else { error = sdmmc_mem_send_cxd_data(sc, MMC_SEND_CID, &cmd.c_resp, sizeof(cmd.c_resp)); } #ifdef SDMMC_DEBUG sdmmc_dump_data("CID", cmd.c_resp, sizeof(cmd.c_resp)); #endif if (error == 0 && resp != NULL) memcpy(resp, &cmd.c_resp, sizeof(*resp)); return error; } static int sdmmc_mem_send_csd(struct sdmmc_softc *sc, struct sdmmc_function *sf, sdmmc_response *resp) { struct sdmmc_command cmd; int error; if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { memset(&cmd, 0, sizeof cmd); cmd.c_opcode = MMC_SEND_CSD; cmd.c_arg = MMC_ARG_RCA(sf->rca); cmd.c_flags = SCF_CMD_AC | SCF_RSP_R2; error = sdmmc_mmc_command(sc, &cmd); } else { error = sdmmc_mem_send_cxd_data(sc, MMC_SEND_CSD, &cmd.c_resp, sizeof(cmd.c_resp)); } #ifdef SDMMC_DEBUG sdmmc_dump_data("CSD", cmd.c_resp, sizeof(cmd.c_resp)); #endif if (error == 0 && resp != NULL) memcpy(resp, &cmd.c_resp, sizeof(*resp)); return error; } static int sdmmc_mem_send_scr(struct sdmmc_softc *sc, struct sdmmc_function *sf, uint32_t scr[2]) { struct sdmmc_command cmd; bus_dma_segment_t ds[1]; void *ptr = NULL; int datalen = 8; int rseg; int error = 0; /* Don't lock */ if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { error = bus_dmamem_alloc(sc->sc_dmat, datalen, PAGE_SIZE, 0, ds, 1, &rseg, BUS_DMA_NOWAIT); if (error) goto out; error = bus_dmamem_map(sc->sc_dmat, ds, 1, datalen, &ptr, BUS_DMA_NOWAIT); if (error) goto dmamem_free; error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmap, ptr, datalen, NULL, BUS_DMA_NOWAIT|BUS_DMA_STREAMING|BUS_DMA_READ); if (error) goto dmamem_unmap; bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, 0, datalen, BUS_DMASYNC_PREREAD); } else { ptr = malloc(datalen, M_DEVBUF, M_NOWAIT | M_ZERO); if (ptr == NULL) goto out; } memset(&cmd, 0, sizeof(cmd)); cmd.c_data = ptr; cmd.c_datalen = datalen; cmd.c_blklen = datalen; cmd.c_arg = 0; cmd.c_flags = SCF_CMD_ADTC | SCF_CMD_READ | SCF_RSP_R1 | SCF_RSP_SPI_R1; cmd.c_opcode = SD_APP_SEND_SCR; if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) cmd.c_dmamap = sc->sc_dmap; error = sdmmc_app_command(sc, sf, &cmd); if (error == 0) { if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, 0, datalen, BUS_DMASYNC_POSTREAD); } memcpy(scr, ptr, datalen); } out: if (ptr != NULL) { if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { bus_dmamap_unload(sc->sc_dmat, sc->sc_dmap); dmamem_unmap: bus_dmamem_unmap(sc->sc_dmat, ptr, datalen); dmamem_free: bus_dmamem_free(sc->sc_dmat, ds, rseg); } else { free(ptr, M_DEVBUF); } } DPRINTF(("%s: sdmem_mem_send_scr: error = %d\n", SDMMCDEVNAME(sc), error)); #ifdef SDMMC_DEBUG if (error == 0) sdmmc_dump_data("SCR", scr, 8); #endif return error; } static int sdmmc_mem_decode_scr(struct sdmmc_softc *sc, struct sdmmc_function *sf) { sdmmc_response resp; int ver; memset(resp, 0, sizeof(resp)); /* * Change the raw-scr received from the DMA stream to resp. */ resp[0] = be32toh(sf->raw_scr[1]) >> 8; // LSW resp[1] = be32toh(sf->raw_scr[0]); // MSW resp[0] |= (resp[1] & 0xff) << 24; resp[1] >>= 8; ver = SCR_STRUCTURE(resp); sf->scr.sd_spec = SCR_SD_SPEC(resp); sf->scr.bus_width = SCR_SD_BUS_WIDTHS(resp); DPRINTF(("%s: sdmmc_mem_decode_scr: %08x%08x spec=%d, bus width=%d\n", SDMMCDEVNAME(sc), resp[1], resp[0], sf->scr.sd_spec, sf->scr.bus_width)); if (ver != 0) { DPRINTF(("%s: unknown structure version: %d\n", SDMMCDEVNAME(sc), ver)); return EINVAL; } return 0; } static int sdmmc_mem_send_cxd_data(struct sdmmc_softc *sc, int opcode, void *data, size_t datalen) { struct sdmmc_command cmd; bus_dma_segment_t ds[1]; void *ptr = NULL; int rseg; int error = 0; if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { error = bus_dmamem_alloc(sc->sc_dmat, datalen, PAGE_SIZE, 0, ds, 1, &rseg, BUS_DMA_NOWAIT); if (error) goto out; error = bus_dmamem_map(sc->sc_dmat, ds, 1, datalen, &ptr, BUS_DMA_NOWAIT); if (error) goto dmamem_free; error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmap, ptr, datalen, NULL, BUS_DMA_NOWAIT|BUS_DMA_STREAMING|BUS_DMA_READ); if (error) goto dmamem_unmap; bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, 0, datalen, BUS_DMASYNC_PREREAD); } else { ptr = malloc(datalen, M_DEVBUF, M_NOWAIT | M_ZERO); if (ptr == NULL) goto out; } memset(&cmd, 0, sizeof(cmd)); cmd.c_data = ptr; cmd.c_datalen = datalen; cmd.c_blklen = datalen; cmd.c_opcode = opcode; cmd.c_arg = 0; cmd.c_flags = SCF_CMD_ADTC | SCF_CMD_READ | SCF_RSP_SPI_R1; if (opcode == MMC_SEND_EXT_CSD) SET(cmd.c_flags, SCF_RSP_R1); else SET(cmd.c_flags, SCF_RSP_R2); if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) cmd.c_dmamap = sc->sc_dmap; error = sdmmc_mmc_command(sc, &cmd); if (error == 0) { if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, 0, datalen, BUS_DMASYNC_POSTREAD); } memcpy(data, ptr, datalen); #ifdef SDMMC_DEBUG sdmmc_dump_data("CXD", data, datalen); #endif } out: if (ptr != NULL) { if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { bus_dmamap_unload(sc->sc_dmat, sc->sc_dmap); dmamem_unmap: bus_dmamem_unmap(sc->sc_dmat, ptr, datalen); dmamem_free: bus_dmamem_free(sc->sc_dmat, ds, rseg); } else { free(ptr, M_DEVBUF); } } return error; } static int sdmmc_set_bus_width(struct sdmmc_function *sf, int width) { struct sdmmc_softc *sc = sf->sc; struct sdmmc_command cmd; int error; if (ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) return ENODEV; memset(&cmd, 0, sizeof(cmd)); cmd.c_opcode = SD_APP_SET_BUS_WIDTH; cmd.c_flags = SCF_RSP_R1 | SCF_CMD_AC; switch (width) { case 1: cmd.c_arg = SD_ARG_BUS_WIDTH_1; break; case 4: cmd.c_arg = SD_ARG_BUS_WIDTH_4; break; default: return EINVAL; } error = sdmmc_app_command(sc, sf, &cmd); if (error == 0) error = sdmmc_chip_bus_width(sc->sc_sct, sc->sc_sch, width); return error; } static int sdmmc_mem_sd_switch(struct sdmmc_function *sf, int mode, int group, int function, void *status) { struct sdmmc_softc *sc = sf->sc; struct sdmmc_command cmd; bus_dma_segment_t ds[1]; void *ptr = NULL; int gsft, rseg, error = 0; const int statlen = 64; if (sf->scr.sd_spec >= SCR_SD_SPEC_VER_1_10 && !ISSET(sf->csd.ccc, SD_CSD_CCC_SWITCH)) return EINVAL; if (group <= 0 || group > 6 || function < 0 || function > 16) return EINVAL; gsft = (group - 1) << 2; if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { error = bus_dmamem_alloc(sc->sc_dmat, statlen, PAGE_SIZE, 0, ds, 1, &rseg, BUS_DMA_NOWAIT); if (error) goto out; error = bus_dmamem_map(sc->sc_dmat, ds, 1, statlen, &ptr, BUS_DMA_NOWAIT); if (error) goto dmamem_free; error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmap, ptr, statlen, NULL, BUS_DMA_NOWAIT|BUS_DMA_STREAMING|BUS_DMA_READ); if (error) goto dmamem_unmap; bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, 0, statlen, BUS_DMASYNC_PREREAD); } else { ptr = malloc(statlen, M_DEVBUF, M_NOWAIT | M_ZERO); if (ptr == NULL) goto out; } memset(&cmd, 0, sizeof(cmd)); cmd.c_data = ptr; cmd.c_datalen = statlen; cmd.c_blklen = statlen; cmd.c_opcode = SD_SEND_SWITCH_FUNC; cmd.c_arg = (!!mode << 31) | (function << gsft) | (0x00ffffff & ~(0xf << gsft)); cmd.c_flags = SCF_CMD_ADTC | SCF_CMD_READ | SCF_RSP_R1 | SCF_RSP_SPI_R1; if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) cmd.c_dmamap = sc->sc_dmap; error = sdmmc_mmc_command(sc, &cmd); if (error == 0) { if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, 0, statlen, BUS_DMASYNC_POSTREAD); } memcpy(status, ptr, statlen); } out: if (ptr != NULL) { if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { bus_dmamap_unload(sc->sc_dmat, sc->sc_dmap); dmamem_unmap: bus_dmamem_unmap(sc->sc_dmat, ptr, statlen); dmamem_free: bus_dmamem_free(sc->sc_dmat, ds, rseg); } else { free(ptr, M_DEVBUF); } } return error; } static int sdmmc_mem_mmc_switch(struct sdmmc_function *sf, uint8_t set, uint8_t index, uint8_t value) { struct sdmmc_softc *sc = sf->sc; struct sdmmc_command cmd; memset(&cmd, 0, sizeof(cmd)); cmd.c_opcode = MMC_SWITCH; cmd.c_arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | (index << 16) | (value << 8) | set; cmd.c_flags = SCF_RSP_SPI_R1B | SCF_RSP_R1B | SCF_CMD_AC; return sdmmc_mmc_command(sc, &cmd); } /* * SPI mode function */ static int sdmmc_mem_spi_read_ocr(struct sdmmc_softc *sc, uint32_t hcs, uint32_t *card_ocr) { struct sdmmc_command cmd; int error; memset(&cmd, 0, sizeof(cmd)); cmd.c_opcode = MMC_READ_OCR; cmd.c_arg = hcs ? MMC_OCR_HCS : 0; cmd.c_flags = SCF_RSP_SPI_R3; error = sdmmc_mmc_command(sc, &cmd); if (error == 0 && card_ocr != NULL) *card_ocr = cmd.c_resp[1]; DPRINTF(("%s: sdmmc_mem_spi_read_ocr: error=%d, ocr=%#x\n", SDMMCDEVNAME(sc), error, cmd.c_resp[1])); return error; } /* * read/write function */ /* read */ static int sdmmc_mem_single_read_block(struct sdmmc_function *sf, uint32_t blkno, u_char *data, size_t datalen) { struct sdmmc_softc *sc __unused = sf->sc; int error = 0; int i; KASSERT((datalen % SDMMC_SECTOR_SIZE) == 0); KASSERT(!ISSET(sc->sc_caps, SMC_CAPS_DMA)); for (i = 0; i < datalen / SDMMC_SECTOR_SIZE; i++) { error = sdmmc_mem_read_block_subr(sf, blkno + i, data + i * SDMMC_SECTOR_SIZE, SDMMC_SECTOR_SIZE); if (error) break; } return error; } static int sdmmc_mem_read_block_subr(struct sdmmc_function *sf, uint32_t blkno, u_char *data, size_t datalen) { struct sdmmc_softc *sc = sf->sc; struct sdmmc_command cmd; int error, bbuf, seg, off, len, num; if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { error = sdmmc_select_card(sc, sf); if (error) goto out; } bbuf = 0; num = 0; seg = off = len = 0; retry: memset(&cmd, 0, sizeof(cmd)); cmd.c_data = data; cmd.c_datalen = datalen; cmd.c_blklen = SDMMC_SECTOR_SIZE; cmd.c_opcode = (cmd.c_datalen / cmd.c_blklen) > 1 ? MMC_READ_BLOCK_MULTIPLE : MMC_READ_BLOCK_SINGLE; cmd.c_arg = blkno; if (!ISSET(sf->flags, SFF_SDHC)) cmd.c_arg <<= SDMMC_SECTOR_SIZE_SB; cmd.c_flags = SCF_CMD_ADTC | SCF_CMD_READ | SCF_RSP_R1 | SCF_RSP_SPI_R1; if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { cmd.c_dmamap = sc->sc_dmap; if (!ISSET(sc->sc_caps, SMC_CAPS_MULTI_SEG_DMA)) { len = sc->sc_dmap->dm_segs[seg].ds_len - off; len &= ~(SDMMC_SECTOR_SIZE - 1); cmd.c_datalen = len; cmd.c_dmaseg = seg; cmd.c_dmaoff = off; bbuf = 0; if (len == 0) { /* Use bounce buffer */ bus_dmamap_sync(sc->sc_dmat, sf->bbuf_dmap, 0, SDMMC_SECTOR_SIZE, BUS_DMASYNC_PREREAD); cmd.c_datalen = SDMMC_SECTOR_SIZE; cmd.c_dmamap = sf->bbuf_dmap; cmd.c_dmaseg = 0; cmd.c_dmaoff = 0; bbuf = 1; len = SDMMC_SECTOR_SIZE; } cmd.c_opcode = (cmd.c_datalen / cmd.c_blklen) > 1 ? MMC_READ_BLOCK_MULTIPLE : MMC_READ_BLOCK_SINGLE; } } error = sdmmc_mmc_command(sc, &cmd); if (error) goto out; if (!ISSET(sc->sc_caps, SMC_CAPS_AUTO_STOP)) { if (cmd.c_opcode == MMC_READ_BLOCK_MULTIPLE) { memset(&cmd, 0, sizeof cmd); cmd.c_opcode = MMC_STOP_TRANSMISSION; cmd.c_arg = MMC_ARG_RCA(sf->rca); cmd.c_flags = SCF_CMD_AC | SCF_RSP_R1B | SCF_RSP_SPI_R1B; error = sdmmc_mmc_command(sc, &cmd); if (error) goto out; } } if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { do { memset(&cmd, 0, sizeof(cmd)); cmd.c_opcode = MMC_SEND_STATUS; if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) cmd.c_arg = MMC_ARG_RCA(sf->rca); cmd.c_flags = SCF_CMD_AC | SCF_RSP_R1 | SCF_RSP_SPI_R2; error = sdmmc_mmc_command(sc, &cmd); if (error) break; /* XXX time out */ } while (!ISSET(MMC_R1(cmd.c_resp), MMC_R1_READY_FOR_DATA)); } if (ISSET(sc->sc_caps, SMC_CAPS_DMA) && !ISSET(sc->sc_caps, SMC_CAPS_MULTI_SEG_DMA)) { bus_dma_segment_t *dm_segs = sc->sc_dmap->dm_segs; if (bbuf) { bus_dmamap_sync(sc->sc_dmat, sf->bbuf_dmap, 0, SDMMC_SECTOR_SIZE, BUS_DMASYNC_POSTREAD); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, num, SDMMC_SECTOR_SIZE, BUS_DMASYNC_POSTREAD); memcpy(data, sf->bbuf, SDMMC_SECTOR_SIZE); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, num, SDMMC_SECTOR_SIZE, BUS_DMASYNC_PREREAD); } num += len; data += len; datalen -= len; blkno += (len / SDMMC_SECTOR_SIZE); while (off + len >= dm_segs[seg].ds_len) { len -= dm_segs[seg++].ds_len; off = 0; } off += len; if (seg < sc->sc_dmap->dm_nsegs) goto retry; } out: return error; } int sdmmc_mem_read_block(struct sdmmc_function *sf, uint32_t blkno, u_char *data, size_t datalen) { struct sdmmc_softc *sc = sf->sc; int error; SDMMC_LOCK(sc); if (ISSET(sc->sc_caps, SMC_CAPS_SINGLE_ONLY)) { error = sdmmc_mem_single_read_block(sf, blkno, data, datalen); goto out; } if (!ISSET(sc->sc_caps, SMC_CAPS_DMA)) { error = sdmmc_mem_read_block_subr(sf, blkno, data, datalen); goto out; } /* DMA transfer */ error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmap, data, datalen, NULL, BUS_DMA_NOWAIT|BUS_DMA_READ); if (error) goto out; #ifdef SDMMC_DEBUG for (int i = 0; i < sc->sc_dmap->dm_nsegs; i++) { printf("seg#%d: addr=%#lx, size=%#lx\n", i, (u_long)sc->sc_dmap->dm_segs[i].ds_addr, (u_long)sc->sc_dmap->dm_segs[i].ds_len); } #endif bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, 0, datalen, BUS_DMASYNC_PREREAD); error = sdmmc_mem_read_block_subr(sf, blkno, data, datalen); if (error) goto unload; bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, 0, datalen, BUS_DMASYNC_POSTREAD); unload: bus_dmamap_unload(sc->sc_dmat, sc->sc_dmap); out: SDMMC_UNLOCK(sc); return error; } /* write */ static int sdmmc_mem_single_write_block(struct sdmmc_function *sf, uint32_t blkno, u_char *data, size_t datalen) { struct sdmmc_softc *sc __unused = sf->sc; int error = 0; int i; KASSERT((datalen % SDMMC_SECTOR_SIZE) == 0); KASSERT(!ISSET(sc->sc_caps, SMC_CAPS_DMA)); for (i = 0; i < datalen / SDMMC_SECTOR_SIZE; i++) { error = sdmmc_mem_write_block_subr(sf, blkno + i, data + i * SDMMC_SECTOR_SIZE, SDMMC_SECTOR_SIZE); if (error) break; } return error; } static int sdmmc_mem_write_block_subr(struct sdmmc_function *sf, uint32_t blkno, u_char *data, size_t datalen) { struct sdmmc_softc *sc = sf->sc; struct sdmmc_command cmd; int error, bbuf, seg, off, len, num; if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { error = sdmmc_select_card(sc, sf); if (error) goto out; } bbuf = 0; num = 0; seg = off = len = 0; retry: memset(&cmd, 0, sizeof(cmd)); cmd.c_data = data; cmd.c_datalen = datalen; cmd.c_blklen = SDMMC_SECTOR_SIZE; cmd.c_opcode = (cmd.c_datalen / cmd.c_blklen) > 1 ? MMC_WRITE_BLOCK_MULTIPLE : MMC_WRITE_BLOCK_SINGLE; cmd.c_arg = blkno; if (!ISSET(sf->flags, SFF_SDHC)) cmd.c_arg <<= SDMMC_SECTOR_SIZE_SB; cmd.c_flags = SCF_CMD_ADTC | SCF_RSP_R1; if (ISSET(sc->sc_caps, SMC_CAPS_DMA)) { cmd.c_dmamap = sc->sc_dmap; if (!ISSET(sc->sc_caps, SMC_CAPS_MULTI_SEG_DMA)) { len = sc->sc_dmap->dm_segs[seg].ds_len - off; len &= ~(SDMMC_SECTOR_SIZE - 1); cmd.c_datalen = len; cmd.c_dmaseg = seg; cmd.c_dmaoff = off; bbuf = 0; if (len == 0) { /* Use bounce buffer */ bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, num, SDMMC_SECTOR_SIZE, BUS_DMASYNC_POSTWRITE); memcpy(sf->bbuf, data, SDMMC_SECTOR_SIZE); bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, num, SDMMC_SECTOR_SIZE, BUS_DMASYNC_PREWRITE); bus_dmamap_sync(sc->sc_dmat, sf->bbuf_dmap, 0, SDMMC_SECTOR_SIZE, BUS_DMASYNC_PREWRITE); cmd.c_datalen = SDMMC_SECTOR_SIZE; cmd.c_dmamap = sf->bbuf_dmap; cmd.c_dmaseg = 0; cmd.c_dmaoff = 0; bbuf = 1; len = SDMMC_SECTOR_SIZE; } cmd.c_opcode = (cmd.c_datalen / cmd.c_blklen) > 1 ? MMC_WRITE_BLOCK_MULTIPLE : MMC_WRITE_BLOCK_SINGLE; } } error = sdmmc_mmc_command(sc, &cmd); if (error) goto out; if (!ISSET(sc->sc_caps, SMC_CAPS_AUTO_STOP)) { if (cmd.c_opcode == MMC_WRITE_BLOCK_MULTIPLE) { memset(&cmd, 0, sizeof(cmd)); cmd.c_opcode = MMC_STOP_TRANSMISSION; cmd.c_flags = SCF_CMD_AC | SCF_RSP_R1B | SCF_RSP_SPI_R1B; error = sdmmc_mmc_command(sc, &cmd); if (error) goto out; } } if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) { do { memset(&cmd, 0, sizeof(cmd)); cmd.c_opcode = MMC_SEND_STATUS; if (!ISSET(sc->sc_caps, SMC_CAPS_SPI_MODE)) cmd.c_arg = MMC_ARG_RCA(sf->rca); cmd.c_flags = SCF_CMD_AC | SCF_RSP_R1 | SCF_RSP_SPI_R2; error = sdmmc_mmc_command(sc, &cmd); if (error) break; /* XXX time out */ } while (!ISSET(MMC_R1(cmd.c_resp), MMC_R1_READY_FOR_DATA)); } if (ISSET(sc->sc_caps, SMC_CAPS_DMA) && !ISSET(sc->sc_caps, SMC_CAPS_MULTI_SEG_DMA)) { bus_dma_segment_t *dm_segs = sc->sc_dmap->dm_segs; if (bbuf) bus_dmamap_sync(sc->sc_dmat, sf->bbuf_dmap, 0, SDMMC_SECTOR_SIZE, BUS_DMASYNC_POSTWRITE); num += len; data += len; datalen -= len; blkno += (len / SDMMC_SECTOR_SIZE); while (off + len >= dm_segs[seg].ds_len) { len -= dm_segs[seg++].ds_len; off = 0; } off += len; if (seg < sc->sc_dmap->dm_nsegs) goto retry; } out: return error; } int sdmmc_mem_write_block(struct sdmmc_function *sf, uint32_t blkno, u_char *data, size_t datalen) { struct sdmmc_softc *sc = sf->sc; int error; SDMMC_LOCK(sc); if (sdmmc_chip_write_protect(sc->sc_sct, sc->sc_sch)) { aprint_normal_dev(sc->sc_dev, "write-protected\n"); error = EIO; goto out; } if (ISSET(sc->sc_caps, SMC_CAPS_SINGLE_ONLY)) { error = sdmmc_mem_single_write_block(sf, blkno, data, datalen); goto out; } if (!ISSET(sc->sc_caps, SMC_CAPS_DMA)) { error = sdmmc_mem_write_block_subr(sf, blkno, data, datalen); goto out; } /* DMA transfer */ error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmap, data, datalen, NULL, BUS_DMA_NOWAIT|BUS_DMA_WRITE); if (error) goto out; #ifdef SDMMC_DEBUG for (int i = 0; i < sc->sc_dmap->dm_nsegs; i++) { printf("seg#%d: addr=%#lx, size=%#lx\n", i, (u_long)sc->sc_dmap->dm_segs[i].ds_addr, (u_long)sc->sc_dmap->dm_segs[i].ds_len); } #endif bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, 0, datalen, BUS_DMASYNC_PREWRITE); error = sdmmc_mem_write_block_subr(sf, blkno, data, datalen); if (error) goto unload; bus_dmamap_sync(sc->sc_dmat, sc->sc_dmap, 0, datalen, BUS_DMASYNC_POSTWRITE); unload: bus_dmamap_unload(sc->sc_dmat, sc->sc_dmap); out: SDMMC_UNLOCK(sc); return error; }