int mmc_send_op_cond(struct mmc *mmc) { int timeout = 10000; struct mmc_cmd cmd; int err; /* Some cards seem to need this */ mmc_go_idle(mmc); /* Asking to the card its capabilities */ cmd.cmdidx = MMC_CMD_SEND_OP_COND; cmd.resp_type = MMC_RSP_R3; cmd.cmdarg = 0; cmd.flags = 0; err = mmc_send_cmd(mmc, &cmd, NULL); if (err) return err; udelay(1000); do { cmd.cmdidx = MMC_CMD_SEND_OP_COND; cmd.resp_type = MMC_RSP_R3; cmd.cmdarg = (mmc_host_is_spi(mmc) ? 0 : (mmc->voltages & (cmd.response[0] & OCR_VOLTAGE_MASK)) | (cmd.response[0] & OCR_ACCESS_MODE)); if (mmc->host_caps & MMC_MODE_HC) cmd.cmdarg |= OCR_HCS; cmd.flags = 0; err = mmc_send_cmd(mmc, &cmd, NULL); if (err) return err; udelay(1000); } while (!(cmd.response[0] & OCR_BUSY) && timeout--); if (timeout <= 0) return UNUSABLE_ERR; if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ cmd.cmdidx = MMC_CMD_SPI_READ_OCR; cmd.resp_type = MMC_RSP_R3; cmd.cmdarg = 0; cmd.flags = 0; err = mmc_send_cmd(mmc, &cmd, NULL); if (err) return err; } mmc->version = MMC_VERSION_UNKNOWN; mmc->ocr = cmd.response[0]; mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); mmc->rca = 1; return 0; }
/** * mmc_set_data_timeout - set the timeout for a data command * @data: data phase for command * @card: the MMC card associated with the data transfer * * Computes the data timeout parameters according to the * correct algorithm given the card type. */ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card) { unsigned int mult; /* * SDIO cards only define an upper 1 s limit on access. */ if (mmc_card_sdio(card)) { data->timeout_ns = 1000000000; data->timeout_clks = 0; return; } /* * SD cards use a 100 multiplier rather than 10 */ mult = mmc_card_sd(card) ? 100 : 10; /* * Scale up the multiplier (and therefore the timeout) by * the r2w factor for writes. */ if (data->flags & MMC_DATA_WRITE) mult <<= card->csd.r2w_factor; data->timeout_ns = card->csd.tacc_ns * mult; data->timeout_clks = card->csd.tacc_clks * mult; /* * SD cards also have an upper limit on the timeout. */ if (mmc_card_sd(card)) { unsigned int timeout_us, limit_us; timeout_us = data->timeout_ns / 1000; if (card->host->ios.clock) timeout_us += data->timeout_clks * 1000 / (card->host->ios.clock / 1000); if (data->flags & MMC_DATA_WRITE) /* * The limit is really 250 ms, but that is * insufficient for some crappy cards. */ limit_us = 300000; else limit_us = 100000; /* * SDHC cards always use these fixed values. */ if (timeout_us > limit_us || mmc_card_blockaddr(card)) { data->timeout_ns = limit_us * 1000; data->timeout_clks = 0; } } /* * Some cards need very high timeouts if driven in SPI mode. * The worst observed timeout was 900ms after writing a * continuous stream of data until the internal logic * overflowed. */ if (mmc_host_is_spi(card->host)) { if (data->flags & MMC_DATA_WRITE) { if (data->timeout_ns < 1000000000) data->timeout_ns = 1000000000; /* 1s */ } else { if (data->timeout_ns < 100000000) data->timeout_ns = 100000000; /* 100ms */ } } }
/* * Starting point for SD card init. */ int mmc_attach_sd(struct mmc_host *host, u32 ocr) { int err; #ifdef CONFIG_MMC_PARANOID_SD_INIT int retries; #endif BUG_ON(!host); WARN_ON(!host->claimed); mmc_sd_attach_bus_ops(host); /* * We need to get OCR a different way for SPI. */ if (mmc_host_is_spi(host)) { mmc_go_idle(host); err = mmc_spi_read_ocr(host, 0, &ocr); if (err) goto err; } /* * Sanity check the voltages that the card claims to * support. */ if (ocr & 0x7F) { printk(KERN_WARNING "%s: card claims to support voltages " "below the defined range. These will be ignored.\n", mmc_hostname(host)); ocr &= ~0x7F; } if (ocr & MMC_VDD_165_195) { printk(KERN_WARNING "%s: SD card claims to support the " "incompletely defined 'low voltage range'. This " "will be ignored.\n", mmc_hostname(host)); ocr &= ~MMC_VDD_165_195; } host->ocr = mmc_select_voltage(host, ocr); /* * Can we support the voltage(s) of the card(s)? */ if (!host->ocr) { err = -EINVAL; goto err; } /* * Detect and init the card. */ #ifdef CONFIG_MMC_PARANOID_SD_INIT retries = 5; while (retries) { err = mmc_sd_init_card(host, host->ocr, NULL); if (err) { retries--; continue; } break; } if (!retries) { printk(KERN_ERR "%s: mmc_sd_init_card() failure (err = %d)\n", mmc_hostname(host), err); goto err; } #else err = mmc_sd_init_card(host, host->ocr, NULL); if (err) goto err; #endif mmc_release_host(host); #ifdef CONFIG_ARCH_EMXX err = mmc_add_card(host->card[0]); #else err = mmc_add_card(host->card); #endif if (err) goto remove_card; return 0; remove_card: #ifdef CONFIG_ARCH_EMXX mmc_remove_card(host->card[0]); host->card[0] = NULL; #else mmc_remove_card(host->card); host->card = NULL; #endif mmc_claim_host(host); err: mmc_detach_bus(host); mmc_release_host(host); printk(KERN_ERR "%s: error %d whilst initialising SD card\n", mmc_hostname(host), err); return err; }
/* * Handle the detection and initialisation of a card. * * In the case of a resume, "oldcard" will contain the card * we're trying to reinitialise. */ static int mmc_init_card(struct mmc_host *host, u32 ocr, struct mmc_card *oldcard) { struct mmc_card *card; int err; u32 cid[4]; unsigned int max_dtr; BUG_ON(!host); WARN_ON(!host->claimed); /* * Since we're changing the OCR value, we seem to * need to tell some cards to go back to the idle * state. We wait 1ms to give cards time to * respond. */ mmc_go_idle(host); /* The extra bit indicates that we support high capacity */ err = mmc_send_op_cond(host, ocr | (1 << 30), NULL); if (err) goto err; /* * For SPI, enable CRC as appropriate. */ if (mmc_host_is_spi(host)) { err = mmc_spi_set_crc(host, use_spi_crc); if (err) goto err; } /* * Fetch CID from card. */ if (mmc_host_is_spi(host)) err = mmc_send_cid(host, cid); else err = mmc_all_send_cid(host, cid); if (err) goto err; if (oldcard) { if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { err = -ENOENT; goto err; } card = oldcard; } else { /* * Allocate card structure. */ card = mmc_alloc_card(host, &mmc_type); if (IS_ERR(card)) { err = PTR_ERR(card); goto err; } card->type = MMC_TYPE_MMC; card->rca = 1; memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); } /* * For native busses: set card RCA and quit open drain mode. */ if (!mmc_host_is_spi(host)) { err = mmc_set_relative_addr(card); if (err) goto free_card; mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } if (!oldcard) { /* * Fetch CSD from card. */ err = mmc_send_csd(card, card->raw_csd); if (err) goto free_card; err = mmc_decode_csd(card); if (err) goto free_card; err = mmc_decode_cid(card); if (err) goto free_card; } /* * Select card, as all following commands rely on that. */ if (!mmc_host_is_spi(host)) { err = mmc_select_card(card); if (err) goto free_card; } if (!oldcard) { /* * Fetch and process extended CSD. */ err = mmc_read_ext_csd(card); if (err) goto free_card; } /* * Activate high speed (if supported) */ if ((card->ext_csd.hs_max_dtr != 0) && (host->caps & MMC_CAP_MMC_HIGHSPEED)) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); if (err) goto free_card; mmc_card_set_highspeed(card); mmc_set_timing(card->host, MMC_TIMING_MMC_HS); } /* * Compute bus speed. */ max_dtr = (unsigned int)-1; if (mmc_card_highspeed(card)) { if (max_dtr > card->ext_csd.hs_max_dtr) max_dtr = card->ext_csd.hs_max_dtr; } else if (max_dtr > card->csd.max_dtr) { max_dtr = card->csd.max_dtr; } mmc_set_clock(host, max_dtr); /* * Activate wide bus (if supported). */ if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { unsigned ext_csd_bit, bus_width; if (host->caps & MMC_CAP_8_BIT_DATA) { ext_csd_bit = EXT_CSD_BUS_WIDTH_8; bus_width = MMC_BUS_WIDTH_8; } else { ext_csd_bit = EXT_CSD_BUS_WIDTH_4; bus_width = MMC_BUS_WIDTH_4; } err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, ext_csd_bit); if (err) goto free_card; mmc_set_bus_width(card->host, bus_width); } if (!oldcard) host->card = card; return 0; free_card: if (!oldcard) mmc_remove_card(card); err: return err; }
/* * Register a new MMC card with the driver model. */ int mmc_add_card(struct mmc_card *card) { int ret; const char *type; DBG("[%s] s\n",__func__); dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca); switch (card->type) { case MMC_TYPE_MMC: type = "MMC"; break; case MMC_TYPE_SD: type = "SD"; if (mmc_card_blockaddr(card)) { if (mmc_card_ext_capacity(card)) type = "SDXC"; else type = "SDHC"; } break; case MMC_TYPE_SDIO: type = "SDIO"; break; case MMC_TYPE_SD_COMBO: type = "SD-combo"; if (mmc_card_blockaddr(card)) type = "SDHC-combo"; break; default: type = "?"; break; } if (mmc_host_is_spi(card->host)) { printk(KERN_INFO "%s: new %s%s%s card on SPI\n", mmc_hostname(card->host), mmc_card_highspeed(card) ? "high speed " : "", mmc_card_ddr_mode(card) ? "DDR " : "", type); } else { printk(KERN_INFO "%s: new %s%s%s card at address %04x\n", mmc_hostname(card->host), mmc_sd_card_uhs(card) ? "ultra high speed " : (mmc_card_highspeed(card) ? "high speed " : ""), mmc_card_ddr_mode(card) ? "DDR " : "", type, card->rca); } #ifdef CONFIG_DEBUG_FS mmc_add_card_debugfs(card); #endif ret = device_add(&card->dev); if (ret) { DBG("[%s] e1\n",__func__); return ret; } mmc_card_set_present(card); DBG("[%s] e2\n",__func__); return 0; }
/* * Handle the detection and initialisation of a card. * * In the case of a resume, "oldcard" will contain the card * we're trying to reinitialise. */ static int mmc_init_card(struct mmc_host *host, u32 ocr, struct mmc_card *oldcard) { struct mmc_card *card; int err, ddr = 0; u32 cid[4]; unsigned int max_dtr; u32 rocr; BUG_ON(!host); WARN_ON(!host->claimed); /* * Since we're changing the OCR value, we seem to * need to tell some cards to go back to the idle * state. We wait 1ms to give cards time to * respond. */ mmc_go_idle(host); /* The extra bit indicates that we support high capacity */ err = mmc_send_op_cond(host, ocr | MMC_CARD_SECTOR_ADDR, &rocr); if (err) goto err; /* * For SPI, enable CRC as appropriate. */ if (mmc_host_is_spi(host)) { err = mmc_spi_set_crc(host, use_spi_crc); if (err) goto err; } /* * Fetch CID from card. */ if (mmc_host_is_spi(host)) err = mmc_send_cid(host, cid); else err = mmc_all_send_cid(host, cid); if (err) goto err; if (oldcard) { if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { err = -ENOENT; goto err; } card = oldcard; } else { /* * Allocate card structure. */ card = mmc_alloc_card(host, &mmc_type); if (IS_ERR(card)) { err = PTR_ERR(card); goto err; } card->type = MMC_TYPE_MMC; card->rca = 1; memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); } /* * For native busses: set card RCA and quit open drain mode. */ if (!mmc_host_is_spi(host)) { err = mmc_set_relative_addr(card); if (err) goto free_card; mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } if (!oldcard) { /* * Fetch CSD from card. */ err = mmc_send_csd(card, card->raw_csd); if (err) goto free_card; err = mmc_decode_csd(card); if (err) goto free_card; err = mmc_decode_cid(card); if (err) goto free_card; } /* * Select card, as all following commands rely on that. */ if (!mmc_host_is_spi(host)) { err = mmc_select_card(card); if (err) goto free_card; } if (!oldcard) { /* * Fetch and process extended CSD. */ err = mmc_read_ext_csd(card); if (err) goto free_card; /* Erase size depends on CSD and Extended CSD */ mmc_set_erase_size(card); if (card->ext_csd.sectors && (rocr & MMC_CARD_SECTOR_ADDR)) mmc_card_set_blockaddr(card); } /* * Activate high speed (if supported) */ if ((card->ext_csd.hs_max_dtr != 0) && (host->caps & MMC_CAP_MMC_HIGHSPEED)) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); if (err && err != -EBADMSG) goto free_card; if (err) { printk(KERN_WARNING "%s: switch to highspeed failed\n", mmc_hostname(card->host)); err = 0; } else { mmc_card_set_highspeed(card); mmc_set_timing(card->host, MMC_TIMING_MMC_HS); } } /* * Compute bus speed. */ max_dtr = (unsigned int)-1; if (mmc_card_highspeed(card)) { if (max_dtr > card->ext_csd.hs_max_dtr) max_dtr = card->ext_csd.hs_max_dtr; } else if (max_dtr > card->csd.max_dtr) { max_dtr = card->csd.max_dtr; } mmc_set_clock(host, max_dtr); /* * Indicate DDR mode (if supported). */ if (mmc_card_highspeed(card)) { if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) && (host->caps & (MMC_CAP_1_8V_DDR))) ddr = MMC_1_8V_DDR_MODE; else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) && (host->caps & (MMC_CAP_1_2V_DDR))) ddr = MMC_1_2V_DDR_MODE; } /* * Activate wide bus and DDR (if supported). */ if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { static unsigned ext_csd_bits[][2] = { { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, }; static unsigned bus_widths[] = { MMC_BUS_WIDTH_8, MMC_BUS_WIDTH_4, MMC_BUS_WIDTH_1 }; unsigned idx, bus_width = 0; if (host->caps & MMC_CAP_8_BIT_DATA) idx = 0; else idx = 1; for (; idx < ARRAY_SIZE(bus_widths); idx++) { bus_width = bus_widths[idx]; if (bus_width == MMC_BUS_WIDTH_1) ddr = 0; /* no DDR for 1-bit width */ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, ext_csd_bits[idx][0]); if (!err) { mmc_set_bus_width_ddr(card->host, bus_width, MMC_SDR_MODE); /* * If controller can't handle bus width test, * use the highest bus width to maintain * compatibility with previous MMC behavior. */ if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) break; err = mmc_bus_test(card, bus_width); if (!err) break; } } if (!err && ddr) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, ext_csd_bits[idx][1]); } if (err) { printk(KERN_WARNING "%s: switch to bus width %d ddr %d " "failed\n", mmc_hostname(card->host), 1 << bus_width, ddr); goto free_card; } else if (ddr) { mmc_card_set_ddr_mode(card); mmc_set_bus_width_ddr(card->host, bus_width, ddr); } } if (!oldcard) host->card = card; return 0; free_card: if (!oldcard) mmc_remove_card(card); err: return err; }
/* * Handle the detection and initialisation of a card. * * In the case of a resume, "oldcard" will contain the card * we're trying to reinitialise. */ static int mmc_init_card(struct mmc_host *host, u32 ocr, struct mmc_card *oldcard) { struct mmc_card *card; int err, ddr = 0; u32 cid[4]; unsigned int max_dtr; u32 rocr; u8 *ext_csd = NULL; BUG_ON(!host); WARN_ON(!host->claimed); /* * Since we're changing the OCR value, we seem to * need to tell some cards to go back to the idle * state. We wait 1ms to give cards time to * respond. */ mmc_go_idle(host); /* The extra bit indicates that we support high capacity */ err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); if (err) goto err; /* * For SPI, enable CRC as appropriate. */ if (mmc_host_is_spi(host)) { err = mmc_spi_set_crc(host, use_spi_crc); if (err) goto err; } /* * Fetch CID from card. */ if (mmc_host_is_spi(host)) err = mmc_send_cid(host, cid); else err = mmc_all_send_cid(host, cid); if (err) goto err; if (oldcard) { if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { err = -ENOENT; goto err; } card = oldcard; } else { /* * Allocate card structure. */ card = mmc_alloc_card(host, &mmc_type); if (IS_ERR(card)) { err = PTR_ERR(card); goto err; } card->type = MMC_TYPE_MMC; card->rca = 1; memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); } /* * For native busses: set card RCA and quit open drain mode. */ if (!mmc_host_is_spi(host)) { err = mmc_set_relative_addr(card); if (err) goto free_card; mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } if (!oldcard) { /* * Fetch CSD from card. */ err = mmc_send_csd(card, card->raw_csd); if (err) goto free_card; err = mmc_decode_csd(card); if (err) goto free_card; err = mmc_decode_cid(card); if (err) goto free_card; } /* * Select card, as all following commands rely on that. */ if (!mmc_host_is_spi(host)) { err = mmc_select_card(card); if (err) goto free_card; } if (!oldcard) { /* * Fetch and process extended CSD. */ err = mmc_get_ext_csd(card, &ext_csd); if (err) goto free_card; err = mmc_read_ext_csd(card, ext_csd); if (err) goto free_card; /* If doing byte addressing, check if required to do sector * addressing. Handle the case of <2GB cards needing sector * addressing. See section 8.1 JEDEC Standard JED84-A441; * ocr register has bit 30 set for sector addressing. */ if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) mmc_card_set_blockaddr(card); /* Erase size depends on CSD and Extended CSD */ mmc_set_erase_size(card); if (card->ext_csd.sectors && (rocr & MMC_CARD_SECTOR_ADDR)) mmc_card_set_blockaddr(card); } /* * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF * bit. This bit will be lost every time after a reset or power off. */ if (card->ext_csd.enhanced_area_en) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_ERASE_GROUP_DEF, 1, 0); if (err && err != -EBADMSG) goto free_card; if (err) { err = 0; /* * Just disable enhanced area off & sz * will try to enable ERASE_GROUP_DEF * during next time reinit */ card->ext_csd.enhanced_area_offset = -EINVAL; card->ext_csd.enhanced_area_size = -EINVAL; } else { card->ext_csd.erase_group_def = 1; /* * enable ERASE_GRP_DEF successfully. * This will affect the erase size, so * here need to reset erase size */ mmc_set_erase_size(card); } } /* * Ensure eMMC user default partition is enabled */ if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, card->ext_csd.part_config, card->ext_csd.part_time); if (err && err != -EBADMSG) goto free_card; } /* * Activate high speed (if supported) */ if ((card->ext_csd.hs_max_dtr != 0) && (host->caps & MMC_CAP_MMC_HIGHSPEED)) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1, 0); if (err && err != -EBADMSG) goto free_card; if (err) { printk(KERN_WARNING "%s: switch to highspeed failed\n", mmc_hostname(card->host)); err = 0; } else { mmc_card_set_highspeed(card); mmc_set_timing(card->host, MMC_TIMING_MMC_HS); } } /* * Compute bus speed. */ max_dtr = (unsigned int)-1; if (mmc_card_highspeed(card)) { if (max_dtr > card->ext_csd.hs_max_dtr) max_dtr = card->ext_csd.hs_max_dtr; } else if (max_dtr > card->csd.max_dtr) { max_dtr = card->csd.max_dtr; } mmc_set_clock(host, max_dtr); /* * Indicate DDR mode (if supported). */ if (mmc_card_highspeed(card)) { if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) && ((host->caps & (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50)) == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) ddr = MMC_1_8V_DDR_MODE; else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) && ((host->caps & (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50)) == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) ddr = MMC_1_2V_DDR_MODE; } /* * Activate wide bus and DDR (if supported). */ if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { static unsigned ext_csd_bits[][2] = { { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, }; static unsigned bus_widths[] = { MMC_BUS_WIDTH_8, MMC_BUS_WIDTH_4, MMC_BUS_WIDTH_1 }; unsigned idx, bus_width = 0; if (host->caps & MMC_CAP_8_BIT_DATA) idx = 0; else idx = 1; for (; idx < ARRAY_SIZE(bus_widths); idx++) { bus_width = bus_widths[idx]; if (bus_width == MMC_BUS_WIDTH_1) ddr = 0; /* no DDR for 1-bit width */ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, ext_csd_bits[idx][0], 0); if (!err) { mmc_set_bus_width(card->host, bus_width); /* * If controller can't handle bus width test, * compare ext_csd previously read in 1 bit mode * against ext_csd at new bus width */ if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) err = mmc_compare_ext_csds(card, bus_width); else err = mmc_bus_test(card, bus_width); if (!err) break; } } if (!err && ddr) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, ext_csd_bits[idx][1], 0); } if (err) { printk(KERN_WARNING "%s: switch to bus width %d ddr %d " "failed\n", mmc_hostname(card->host), 1 << bus_width, ddr); goto free_card; } else if (ddr) { /* * eMMC cards can support 3.3V to 1.2V i/o (vccq) * signaling. * * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. * * 1.8V vccq at 3.3V core voltage (vcc) is not required * in the JEDEC spec for DDR. * * Do not force change in vccq since we are obviously * working and no change to vccq is needed. * * WARNING: eMMC rules are NOT the same as SD DDR */ if (ddr == MMC_1_2V_DDR_MODE) { err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120, 0); if (err) goto err; } mmc_card_set_ddr_mode(card); mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); mmc_set_bus_width(card->host, bus_width); } } if (!oldcard) host->card = card; mmc_free_ext_csd(ext_csd); return 0; free_card: if (!oldcard) mmc_remove_card(card); err: mmc_free_ext_csd(ext_csd); return err; }
/** * FIXME * @param mci MCI instance * @return Transaction status (0 on success) */ static int sd_send_op_cond(struct mci *mci) { struct mci_host *host = mci->host; struct mci_cmd cmd; int timeout = 1000; int err; unsigned voltages; unsigned busy; unsigned arg; /* * Most cards do not answer if some reserved bits * in the ocr are set. However, Some controller * can set bit 7 (reserved for low voltages), but * how to manage low voltages SD card is not yet * specified. */ voltages = host->voltages & 0xff8000; do { mci_setup_cmd(&cmd, MMC_CMD_APP_CMD, 0, MMC_RSP_R1); err = mci_send_cmd(mci, &cmd, NULL); if (err) { dev_dbg(&mci->dev, "Preparing SD for operating conditions failed: %d\n", err); return err; } arg = mmc_host_is_spi(host) ? 0 : voltages; if (mci->version == SD_VERSION_2) arg |= OCR_HCS; mci_setup_cmd(&cmd, SD_CMD_APP_SEND_OP_COND, arg, MMC_RSP_R3); err = mci_send_cmd(mci, &cmd, NULL); if (err) { dev_dbg(&mci->dev, "SD operation condition set failed: %d\n", err); return err; } udelay(1000); if (mmc_host_is_spi(host)) busy = cmd.response[0] & R1_SPI_IDLE; else busy = !(cmd.response[0] & OCR_BUSY); } while (busy && timeout--); if (timeout <= 0) { dev_dbg(&mci->dev, "SD operation condition set timed out\n"); return -ENODEV; } if (mci->version != SD_VERSION_2) mci->version = SD_VERSION_1_0; if (mmc_host_is_spi(host)) { /* read OCR for spi */ mci_setup_cmd(&cmd, MMC_CMD_SPI_READ_OCR, 0, MMC_RSP_R3); err = mci_send_cmd(mci, &cmd, NULL); if (err) return err; } mci->ocr = cmd.response[0]; mci->high_capacity = ((mci->ocr & OCR_HCS) == OCR_HCS); mci->rca = 0; return 0; }
static int mmc_send_trimsize_erase_cmd(struct mmc_card *card) { int err; unsigned int timeout = 0; struct mmc_command cmd; u32 status; BUG_ON(!card); BUG_ON(!card->host); memset(&cmd, 0, sizeof(struct mmc_command)); cmd.opcode = MMC_ERASE_GROUP_START; cmd.arg = 0x4000A018; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; err = mmc_wait_for_cmd(card->host, &cmd, 0); if (err) { printk(KERN_ERR "mmc_erase: group start error %d, " "status %#x\n", err, cmd.resp[0]); err = -EINVAL; goto out; } memset(&cmd, 0, sizeof(struct mmc_command)); cmd.opcode = MMC_ERASE_GROUP_END; cmd.arg = 0x00006400; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; err = mmc_wait_for_cmd(card->host, &cmd, 0); if (err) { printk(KERN_ERR "mmc_erase: group end error %d, status %#x\n", err, cmd.resp[0]); err = -EINVAL; goto out; } memset(&cmd, 0, sizeof(struct mmc_command)); cmd.opcode = MMC_ERASE; cmd.arg = 0x0; cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; cmd.erase_timeout = 1000; //mmc_set_erase_timeout(card, &cmd, 0x0, 1000); err = mmc_wait_for_cmd(card->host, &cmd, 0); if (err) { printk(KERN_ERR "mmc_erase: erase error %d, status %#x\n", err, cmd.resp[0]); err = -EIO; goto out; } if (mmc_host_is_spi(card->host)) goto out; do { memset(&cmd, 0, sizeof(struct mmc_command)); cmd.opcode = MMC_SEND_STATUS; cmd.arg = card->rca << 16; cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; /* Do not retry else we can't see errors */ err = mmc_wait_for_cmd(card->host, &cmd, 0); if (err || (cmd.resp[0] & 0xFDF92000)) { printk(KERN_ERR "error %d requesting status %#x\n", err, cmd.resp[0]); err = -EIO; goto out; } } while (!(cmd.resp[0] & R1_READY_FOR_DATA) || R1_CURRENT_STATE(cmd.resp[0]) == 7); out: return err; }
/* * Starting point for MMC card init. */ int mmc_attach_mmc(struct mmc_host *host) { int err; u32 ocr; BUG_ON(!host); WARN_ON(!host->claimed); mt6575_mmc_info( "+%s--Liu\n", __func__); err = mmc_send_op_cond(host, 0, &ocr); if (err) return err; mmc_attach_bus_ops(host); if (host->ocr_avail_mmc) host->ocr_avail = host->ocr_avail_mmc; /* * We need to get OCR a different way for SPI. */ if (mmc_host_is_spi(host)) { err = mmc_spi_read_ocr(host, 1, &ocr); if (err) goto err; } /* * Sanity check the voltages that the card claims to * support. */ if (ocr & 0x7F) { printk(KERN_WARNING "%s: card claims to support voltages " "below the defined range. These will be ignored.\n", mmc_hostname(host)); ocr &= ~0x7F; } host->ocr = mmc_select_voltage(host, ocr); /* * Can we support the voltage of the card? */ if (!host->ocr) { mt6575_mmc_info("%s: error, ocr is NULL--Liu\n", __func__); err = -EINVAL; goto err; } /* * Detect and init the card. */ err = mmc_init_card(host, host->ocr, NULL); if (err) goto err; mmc_release_host(host); err = mmc_add_card(host->card); #ifdef MTK_EMMC_SUPPORT err = init_pmt(); host->card_init_complete(host); #endif mmc_claim_host(host); if (err) goto remove_card; mt6575_mmc_info( "-%s--Liu\n", __func__); return 0; remove_card: mmc_release_host(host); mmc_remove_card(host->card); mmc_claim_host(host); host->card = NULL; err: mmc_detach_bus(host); printk(KERN_ERR "%s: error %d whilst initialising MMC card\n", mmc_hostname(host), err); return err; }
/* * Starting point for MMC card init. */ int mmc_attach_mmc(struct mmc_host *host, u32 ocr) { int err; int i = 0; BUG_ON(!host); WARN_ON(!host->claimed); mmc_attach_bus_ops(host); /* * We need to get OCR a different way for SPI. */ if (mmc_host_is_spi(host)) { err = mmc_spi_read_ocr(host, 1, &ocr); if (err) goto err; } /* * Sanity check the voltages that the card claims to * support. */ if (ocr & 0x7F) { printk(KERN_WARNING "%s: card claims to support voltages " "below the defined range. These will be ignored.\n", mmc_hostname(host)); ocr &= ~0x7F; } host->ocr = mmc_select_voltage(host, ocr); /* * Can we support the voltage of the card? */ if (!host->ocr) { err = -EINVAL; goto err; } /* * Detect and init the card. */ err = mmc_init_card(host, host->ocr, NULL); if (err) goto err; /* WA : Lock/Unlock CMD in case of 32nm iNAND */ /*check iNAND*/ if (host->card->cid.manfid == 0x45 || host->card->cid.manfid == 0x02) /*check 32nm*/ if (!(host->card->ext_csd.hpi & 0x1)) { printk(KERN_DEBUG "%s: Lock-unlock started, MID=0x%x, HPI=0x%x\n", __func__, host->card->cid.manfid, host->card->ext_csd.hpi); for (i = 0 ; i < 50 ; i++) { if (mmc_send_lock_cmd(host, 1)) { printk(KERN_ERR "%s: eMMC lock CMD is failed.\n", mmc_hostname(host)); goto remove_card; } if (mmc_send_lock_cmd(host, 0)) { printk(KERN_ERR "%s: eMMC unlock CMD is failed.\n", mmc_hostname(host)); goto remove_card; } } printk(KERN_DEBUG "%s:COMPLETED\n",__func__); } mmc_release_host(host); err = mmc_add_card(host->card); if (err) goto remove_card; return 0; remove_card: mmc_remove_card(host->card); host->card = NULL; mmc_claim_host(host); err: mmc_detach_bus(host); mmc_release_host(host); printk(KERN_ERR "%s: error %d whilst initialising MMC card\n", mmc_hostname(host), err); return err; }
/** * __mmc_switch - modify EXT_CSD register * @card: the MMC card associated with the data transfer * @set: cmd set values * @index: EXT_CSD register index * @value: value to program into EXT_CSD register * @timeout_ms: timeout (ms) for operation performed by register write, * timeout of zero implies maximum possible timeout * @timing: new timing to change to * @use_busy_signal: use the busy signal as response type * @send_status: send status cmd to poll for busy * @retry_crc_err: retry when CRC errors when polling with CMD13 for busy * * Modifies the EXT_CSD register for selected card. */ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, unsigned int timeout_ms, unsigned char timing, bool use_busy_signal, bool send_status, bool retry_crc_err) { struct mmc_host *host = card->host; int err; struct mmc_command cmd = {}; bool use_r1b_resp = use_busy_signal; unsigned char old_timing = host->ios.timing; mmc_retune_hold(host); /* * If the cmd timeout and the max_busy_timeout of the host are both * specified, let's validate them. A failure means we need to prevent * the host from doing hw busy detection, which is done by converting * to a R1 response instead of a R1B. */ if (timeout_ms && host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) use_r1b_resp = false; cmd.opcode = MMC_SWITCH; cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | (index << 16) | (value << 8) | set; cmd.flags = MMC_CMD_AC; if (use_r1b_resp) { cmd.flags |= MMC_RSP_SPI_R1B | MMC_RSP_R1B; /* * A busy_timeout of zero means the host can decide to use * whatever value it finds suitable. */ cmd.busy_timeout = timeout_ms; } else { cmd.flags |= MMC_RSP_SPI_R1 | MMC_RSP_R1; } if (index == EXT_CSD_SANITIZE_START) cmd.sanitize_busy = true; err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); if (err) goto out; /* No need to check card status in case of unblocking command */ if (!use_busy_signal) goto out; /*If SPI or used HW busy detection above, then we don't need to poll. */ if (((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp) || mmc_host_is_spi(host)) goto out_tim; /* Let's try to poll to find out when the command is completed. */ err = mmc_poll_for_busy(card, timeout_ms, send_status, retry_crc_err); if (err) goto out; out_tim: /* Switch to new timing before check switch status. */ if (timing) mmc_set_timing(host, timing); if (send_status) { err = mmc_switch_status(card); if (err && timing) mmc_set_timing(host, old_timing); } out: mmc_retune_release(host); return err; }
/* * Register a new MMC card with the driver model. */ int mmc_add_card(struct mmc_card *card) { int ret; const char *type; const char *uhs_bus_speed_mode = ""; static const char *const uhs_speeds[] = { [UHS_SDR12_BUS_SPEED] = "SDR12 ", [UHS_SDR25_BUS_SPEED] = "SDR25 ", [UHS_SDR50_BUS_SPEED] = "SDR50 ", [UHS_SDR104_BUS_SPEED] = "SDR104 ", [UHS_DDR50_BUS_SPEED] = "DDR50 ", }; dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca); switch (card->type) { case MMC_TYPE_MMC: type = "MMC"; break; case MMC_TYPE_SD: type = "SD"; if (mmc_card_blockaddr(card)) { if (mmc_card_ext_capacity(card)) type = "SDXC"; else type = "SDHC"; } break; case MMC_TYPE_SDIO: type = "SDIO"; break; case MMC_TYPE_SD_COMBO: type = "SD-combo"; if (mmc_card_blockaddr(card)) type = "SDHC-combo"; break; default: type = "?"; break; } if (mmc_sd_card_uhs(card) && (card->sd_bus_speed < ARRAY_SIZE(uhs_speeds))) uhs_bus_speed_mode = uhs_speeds[card->sd_bus_speed]; if (mmc_host_is_spi(card->host)) { pr_info("%s: new %s%s%s card on SPI\n", mmc_hostname(card->host), mmc_card_highspeed(card) ? "high speed " : "", mmc_card_ddr_mode(card) ? "DDR " : "", type); } else { pr_info("%s: new %s%s%s%s%s%s card at address %04x\n", mmc_hostname(card->host), mmc_card_uhs(card) ? "ultra high speed " : (mmc_card_highspeed(card) ? "high speed " : ""), (mmc_card_hs400(card) ? "HS400 " : ""), (mmc_card_hs200(card) ? "HS200 " : ""), mmc_card_ddr_mode(card) ? "DDR " : "", uhs_bus_speed_mode, type, card->rca); } #ifdef CONFIG_MACH_LGE /* */ printk(KERN_INFO "[LGE][MMC][%-18s( )] mmc_hostname:%s, type:%s\n", __func__, mmc_hostname(card->host), type); #endif #ifdef CONFIG_DEBUG_FS mmc_add_card_debugfs(card); #endif mmc_init_context_info(card->host); if (mmc_use_core_runtime_pm(card->host)) { ret = pm_runtime_set_active(&card->dev); if (ret) pr_err("%s: %s: failed setting runtime active: ret: %d\n", mmc_hostname(card->host), __func__, ret); else if (!mmc_card_sdio(card)) pm_runtime_enable(&card->dev); } ret = device_add(&card->dev); #ifdef CONFIG_MACH_LGE /* */ if (ret) { printk(KERN_INFO "[LGE][MMC][%-18s( )] device_add & uevent posting fail!, ret:%d \n", __func__, ret); return ret; } else { printk(KERN_INFO "[LGE][MMC][%-18s( )] device_add & uevent posting complete!\n", __func__); } #else if (ret) return ret; #endif if (mmc_use_core_runtime_pm(card->host) && !mmc_card_sdio(card)) { card->rpm_attrib.show = show_rpm_delay; card->rpm_attrib.store = store_rpm_delay; sysfs_attr_init(&card->rpm_attrib.attr); card->rpm_attrib.attr.name = "runtime_pm_timeout"; card->rpm_attrib.attr.mode = S_IRUGO | S_IWUSR; ret = device_create_file(&card->dev, &card->rpm_attrib); if (ret) pr_err("%s: %s: creating runtime pm sysfs entry: failed: %d\n", mmc_hostname(card->host), __func__, ret); /* Default timeout is 10 seconds */ card->idle_timeout = RUNTIME_SUSPEND_DELAY_MS; } mmc_card_set_present(card); return 0; }
int sd_change_freq(struct mmc *mmc) { int err; struct mmc_cmd cmd; u32 scr[2]; u32 switch_status[16]; struct mmc_data data; int timeout; mmc->card_caps = 0; if (mmc_host_is_spi(mmc)) return 0; /* Read the SCR to find out if this card supports higher speeds */ cmd.cmdidx = MMC_CMD_APP_CMD; cmd.resp_type = MMC_RSP_R1; cmd.cmdarg = mmc->rca << 16; cmd.flags = 0; err = mmc_send_cmd(mmc, &cmd, NULL); if (err) return err; cmd.cmdidx = SD_CMD_APP_SEND_SCR; cmd.resp_type = MMC_RSP_R1; cmd.cmdarg = 0; cmd.flags = 0; timeout = 3; retry_scr: data.b.dest = (char *)&scr; data.blocksize = 8; data.blocks = 1; data.flags = MMC_DATA_READ; err = mmc_send_cmd(mmc, &cmd, &data); if (err) { if (timeout--) goto retry_scr; return err; } mmc->scr[0] = __be32_to_cpu(scr[0]); mmc->scr[1] = __be32_to_cpu(scr[1]); switch ((mmc->scr[0] >> 24) & 0xf) { case 0: mmc->version = SD_VERSION_1_0; break; case 1: mmc->version = SD_VERSION_1_10; break; case 2: mmc->version = SD_VERSION_2; break; default: mmc->version = SD_VERSION_1_0; break; } if (mmc->scr[0] & SD_DATA_4BIT) mmc->card_caps |= MMC_MODE_4BIT; /* Version 1.0 doesn't support switching */ if (mmc->version == SD_VERSION_1_0) return 0; timeout = 4; while (timeout--) { err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1, (u8 *)&switch_status); if (err) return err; /* The high-speed function is busy. Try again */ if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY)) break; } /* If high-speed isn't supported, we return */ if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)) return 0; err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)&switch_status); if (err) return err; if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000) mmc->card_caps |= MMC_MODE_HS; return 0; }
static int CPRM_CMD_SecureMultiRW(struct mmc_card *card, unsigned int command, unsigned int dir, unsigned long arg, unsigned char *buff, unsigned int length) { int err; struct mmc_request mrq; struct mmc_command cmd; struct mmc_command stop; struct mmc_data data; unsigned long flags; struct scatterlist sg; memset(&cmd, 0, sizeof(struct mmc_command)); memset(&stop, 0, sizeof(struct mmc_command)); cmd.opcode = MMC_APP_CMD; cmd.arg = card->rca << 16; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; err = mmc_wait_for_cmd(card->host, &cmd, 0); if (err) return (u32)-1; if (!mmc_host_is_spi(card->host) && !(cmd.resp[0] & R1_APP_CMD)) return (u32)-1; printk(KERN_DEBUG"CPRM_CMD_SecureRW: 1\n"); memset(&cmd, 0, sizeof(struct mmc_command)); cmd.opcode = command; if (command == SD_ACMD43_GET_MKB) cmd.arg = arg; else cmd.arg = 0; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; memset(&data, 0, sizeof(struct mmc_data)); data.timeout_ns = 100000000; data.timeout_clks = 0; data.blksz = 512; data.blocks = (length + 511) / 512; data.flags = dir; data.sg = &sg; data.sg_len = 1; stop.opcode = MMC_STOP_TRANSMISSION; stop.arg = 0; stop.flags = MMC_RSP_R1B | MMC_CMD_AC; memset(&mrq, 0, sizeof(struct mmc_request)); mrq.cmd = &cmd; mrq.data = &data; mrq.stop = &stop; printk(KERN_DEBUG "CPRM_CMD_SecureRW: 2\n"); sg_init_one(&sg, buff, length); if (dir == MMC_DATA_WRITE) { local_irq_save(flags); sg_copy_from_buffer(&sg, data.sg_len, buff, length); local_irq_restore(flags); } printk(KERN_DEBUG "CPRM_CMD_SecureRW: 3\n"); mmc_wait_for_req(card->host, &mrq); printk(KERN_DEBUG "CPRM_CMD_SecureRW: 4\n"); if (cmd.error) { printk(KERN_DEBUG "%s]cmd.error=%d\n", __func__, cmd.error); return cmd.error; } if (data.error) { printk(KERN_DEBUG "%s]data.error=%d\n", __func__, data.error); return data.error; } err = mmc_wait_busy(card); printk(KERN_DEBUG "CPRM_CMD_SecureRW: 5\n"); if (dir == MMC_DATA_READ) { local_irq_save(flags); sg_copy_to_buffer(&sg, data.sg_len, buff, length); local_irq_restore(flags); } if (err) return err; return 0; }
/* * Register a new MMC card with the driver model. */ int mmc_add_card(struct mmc_card *card) { int ret; const char *type; #ifdef TINNO_ANDROID_SD_SECURE char spec_buf[30]; char class_buf[30]; char security_buf[30]; memset(spec_buf, 0, sizeof(spec_buf)); memset(class_buf, 0, sizeof(class_buf)); memset(security_buf, 0, sizeof(security_buf)); #endif dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca); switch (card->type) { case MMC_TYPE_MMC: type = "MMC"; break; case MMC_TYPE_SD: type = "SD"; if (mmc_card_blockaddr(card)) { if (mmc_card_ext_capacity(card)) type = "SDXC"; else type = "SDHC"; } break; case MMC_TYPE_SDIO: type = "SDIO"; break; case MMC_TYPE_SD_COMBO: type = "SD-combo"; if (mmc_card_blockaddr(card)) type = "SDHC-combo"; break; default: type = "?"; break; } if (mmc_host_is_spi(card->host)) { printk(KERN_INFO "%s: new %s%s%s card on SPI\n", mmc_hostname(card->host), mmc_card_highspeed(card) ? "high speed " : "", mmc_card_ddr_mode(card) ? "DDR " : "", type); } else { printk(KERN_ERR "%s: new %s%s%s card at address %04x--Liu\n", mmc_hostname(card->host), mmc_sd_card_uhs(card) ? "ultra high speed " : (mmc_card_highspeed(card) ? "high speed " : ""), mmc_card_ddr_mode(card) ? "DDR " : "", type, card->rca); #ifdef TINNO_ANDROID_SD_SECURE if(card->host->index == 1) { mmc_decode_sepc(card->sec_info.sd_spec, card->sec_info.sd_spec3, spec_buf); mmc_decode_class(card->sec_info.sd_speed_class, class_buf); mmc_decode_security(card->sec_info.sd_security, security_buf); printk("%s: SD Card %s %s %s--Liu\n", __func__, spec_buf, class_buf, security_buf); } #endif } #ifdef CONFIG_DEBUG_FS mmc_add_card_debugfs(card); #endif ret = device_add(&card->dev); if (ret) return ret; mmc_card_set_present(card); return 0; }
static int CPRM_CMD_SecureRW(struct mmc_card *card, unsigned int command, unsigned int dir, unsigned long arg, unsigned char *buff, unsigned int length) { int err; int i = 0; struct mmc_request mrq; struct mmc_command cmd; struct mmc_command stop; struct mmc_data data; struct scatterlist sg; if (command == SD_ACMD25_SECURE_WRITE_MULTI_BLOCK || command == SD_ACMD18_SECURE_READ_MULTI_BLOCK) { return -EINVAL; } memset(&cmd, 0, sizeof(struct mmc_command)); cmd.opcode = MMC_APP_CMD; cmd.arg = card->rca << 16; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; //kishore mmc_rpm_hold(card->host, &card->dev); mmc_claim_host(card->host); err = mmc_wait_for_cmd(card->host, &cmd, 0); if (err) { printk("CPRM mmc_wait_for_cmd fail = %d ERROR\n", err); mmc_release_host(card->host); mmc_rpm_release(card->host, &card->dev); return (u32)-1; } if (!mmc_host_is_spi(card->host) && !(cmd.resp[0] & R1_APP_CMD)) { printk("CPRM mmc_host_is_spi fail ERROR\n"); mmc_release_host(card->host); mmc_rpm_release(card->host, &card->dev); return (u32)-1; } printk("CPRM_CMD_SecureRW: 1, command : %d\n", command); memset(&cmd, 0, sizeof(struct mmc_command)); cmd.opcode = command; if (command == SD_ACMD43_GET_MKB) cmd.arg = arg; else cmd.arg = 0; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; memset(&data, 0, sizeof(struct mmc_data)); data.timeout_ns = 100000000; data.timeout_clks = 0; data.blksz = length; data.blocks = 1; data.flags = dir; data.sg = &sg; data.sg_len = 1; stop.opcode = MMC_STOP_TRANSMISSION; stop.arg = 0; stop.flags = MMC_RSP_R1B | MMC_CMD_AC; memset(&mrq, 0, sizeof(struct mmc_request)); mrq.cmd = &cmd; mrq.data = &data; if (data.blocks == 1) mrq.stop = NULL; else mrq.stop = &stop; printk(KERN_DEBUG"CPRM_CMD_SecureRW: 2\n"); sg_init_one(&sg, buff, length); printk(KERN_DEBUG"CPRM_CMD_SecureRW: 3\n"); mmc_wait_for_req(card->host, &mrq); //kishore mmc_release_host(card->host); mmc_rpm_release(card->host, &card->dev); printk(KERN_DEBUG"CPRM_CMD_SecureRW: 4\n"); i = 0; do { printk(KERN_DEBUG"%x", buff[i++]); if (i > 10) break; } while (i < length); printk(KERN_DEBUG"\n"); if (cmd.error) { printk(KERN_DEBUG "%s]cmd.error=%d\n ", __func__, cmd.error); return cmd.error; } if (data.error) { printk(KERN_DEBUG "%s]data.error=%d\n ", __func__, data.error); return data.error; } err = mmc_wait_busy(card); printk(KERN_DEBUG"CPRM_CMD_SecureRW: 5\n"); if (err) return err; return 0; }
int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, bool reinit) { int err; #ifdef CONFIG_MMC_PARANOID_SD_INIT int retries; #endif if (!reinit) { /* * Fetch SCR from card. */ err = mmc_app_send_scr(card, card->raw_scr); if (err) return err; err = mmc_decode_scr(card); if (err) return err; /* * Fetch and process SD Status register. */ err = mmc_read_ssr(card); if (err) return err; /* Erase init depends on CSD and SSR */ mmc_init_erase(card); /* * Fetch switch information from card. */ #ifdef CONFIG_MMC_PARANOID_SD_INIT for (retries = 1; retries <= 3; retries++) { err = mmc_read_switch(card); if (!err) { if (retries > 1) { printk(KERN_WARNING "%s: recovered\n", mmc_hostname(host)); } break; } else { printk(KERN_WARNING "%s: read switch failed (attempt %d)\n", mmc_hostname(host), retries); } } #else err = mmc_read_switch(card); #endif if (err) return err; } /* * For SPI, enable CRC as appropriate. * This CRC enable is located AFTER the reading of the * card registers because some SDHC cards are not able * to provide valid CRCs for non-512-byte blocks. */ if (mmc_host_is_spi(host)) { err = mmc_spi_set_crc(host, use_spi_crc); if (err) return err; } /* * Check if read-only switch is active. */ if (!reinit) { int ro = -1; if (host->ops->get_ro) ro = host->ops->get_ro(host); if (ro < 0) { printk(KERN_WARNING "%s: host does not " "support reading read-only " "switch. assuming write-enable.\n", mmc_hostname(host)); } else if (ro > 0) { mmc_card_set_readonly(card); } } return 0; }
/** * __mmc_switch - modify EXT_CSD register * @card: the MMC card associated with the data transfer * @set: cmd set values * @index: EXT_CSD register index * @value: value to program into EXT_CSD register * @timeout_ms: timeout (ms) for operation performed by register write, * timeout of zero implies maximum possible timeout * @use_busy_signal: use the busy signal as response type * @bkops_busy: set this to indicate that we are starting blocking bkops * * Modifies the EXT_CSD register for selected card. */ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, unsigned int timeout_ms, bool use_busy_signal, bool bkops_busy) { int err; struct mmc_command cmd = {0}; unsigned long timeout; u32 status; BUG_ON(!card); BUG_ON(!card->host); cmd.opcode = MMC_SWITCH; cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | (index << 16) | (value << 8) | set; cmd.flags = MMC_CMD_AC; if (use_busy_signal) cmd.flags |= MMC_RSP_SPI_R1B | MMC_RSP_R1B; else cmd.flags |= MMC_RSP_SPI_R1 | MMC_RSP_R1; cmd.cmd_timeout_ms = timeout_ms; cmd.bkops_busy = bkops_busy; err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES); if (err) return err; /* No need to check card status in case of unblocking command */ if (!use_busy_signal) return 0; /* Must check status to be sure of no errors */ timeout = jiffies + msecs_to_jiffies(MMC_OPS_TIMEOUT_MS); do { err = mmc_send_status(card, &status); if (err) return err; if (card->host->caps & MMC_CAP_WAIT_WHILE_BUSY) break; if (mmc_host_is_spi(card->host)) break; /* Timeout if the device never leaves the program state. */ if (time_after(jiffies, timeout)) { pr_err("%s: Card stuck in programming state! %s\n", mmc_hostname(card->host), __func__); return -ETIMEDOUT; } } while (R1_CURRENT_STATE(status) == R1_STATE_PRG); if (mmc_host_is_spi(card->host)) { if (status & R1_SPI_ILLEGAL_COMMAND) return -EBADMSG; } else { if (status & 0xFDFFA000) pr_warning("%s: unexpected status %#x after " "switch", mmc_hostname(card->host), status); if (status & R1_SWITCH_ERROR) return -EBADMSG; } return 0; }
/* * Handle the detection and initialisation of a card. * * In the case of a resume, "oldcard" will contain the card * we're trying to reinitialise. */ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, struct mmc_card *oldcard) { struct mmc_card *card; int err; u32 cid[4]; u32 rocr = 0; BUG_ON(!host); WARN_ON(!host->claimed); err = mmc_sd_get_cid(host, ocr, cid, &rocr); if (err) return err; if (oldcard) { if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) return -ENOENT; card = oldcard; } else { /* * Allocate card structure. */ card = mmc_alloc_card(host, &sd_type); if (IS_ERR(card)) return PTR_ERR(card); card->type = MMC_TYPE_SD; memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); } /* * For native busses: get card RCA and quit open drain mode. */ if (!mmc_host_is_spi(host)) { err = mmc_send_relative_addr(host, &card->rca); if (err) return err; mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } if (!oldcard) { err = mmc_sd_get_csd(host, card); if (err) return err; mmc_decode_cid(card); } /* * Select card, as all following commands rely on that. */ if (!mmc_host_is_spi(host)) { err = mmc_select_card(card); if (err) return err; } err = mmc_sd_setup_card(host, card, oldcard != NULL); if (err) goto free_card; /* Initialization sequence for UHS-I cards */ if (rocr & SD_ROCR_S18A) { err = mmc_sd_init_uhs_card(card); if (err) goto free_card; } else { /* * Attempt to change to high-speed (if supported) */ err = mmc_sd_switch_hs(card); if (err > 0) mmc_sd_go_highspeed(card); else if (err) goto free_card; /* * Set bus speed. */ mmc_set_clock(host, mmc_sd_get_max_clock(card)); /* * Switch to wider bus (if supported). */ if ((host->caps & MMC_CAP_4_BIT_DATA) && (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); if (err) goto free_card; mmc_set_bus_width(host, MMC_BUS_WIDTH_4); } } host->card = card; return 0; free_card: if (!oldcard) mmc_remove_card(card); return err; }
/* * Register a new MMC card with the driver model. */ int mmc_add_card(struct mmc_card *card) { int ret; const char *type; const char *uhs_bus_speed_mode = ""; static const char *const uhs_speeds[] = { [UHS_SDR12_BUS_SPEED] = "SDR12 ", [UHS_SDR25_BUS_SPEED] = "SDR25 ", [UHS_SDR50_BUS_SPEED] = "SDR50 ", [UHS_SDR104_BUS_SPEED] = "SDR104 ", [UHS_DDR50_BUS_SPEED] = "DDR50 ", }; dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca); switch (card->type) { case MMC_TYPE_MMC: type = "MMC"; break; case MMC_TYPE_SD: type = "SD"; if (mmc_card_blockaddr(card)) { if (mmc_card_ext_capacity(card)) type = "SDXC"; else type = "SDHC"; } break; case MMC_TYPE_SDIO: type = "SDIO"; break; case MMC_TYPE_SD_COMBO: type = "SD-combo"; if (mmc_card_blockaddr(card)) type = "SDHC-combo"; break; default: type = "?"; break; } if (mmc_sd_card_uhs(card) && (card->sd_bus_speed < ARRAY_SIZE(uhs_speeds))) uhs_bus_speed_mode = uhs_speeds[card->sd_bus_speed]; if (mmc_host_is_spi(card->host)) { pr_info("%s: new %s%s%s card on SPI\n", mmc_hostname(card->host), mmc_card_highspeed(card) ? "high speed " : "", mmc_card_ddr_mode(card) ? "DDR " : "", type); } else { pr_info("%s: new %s%s%s%s%s card at address %04x\n", mmc_hostname(card->host), mmc_card_uhs(card) ? "ultra high speed " : (mmc_card_highspeed(card) ? "high speed " : ""), (mmc_card_hs200(card) ? "HS200 " : ""), mmc_card_ddr_mode(card) ? "DDR " : "", uhs_bus_speed_mode, type, card->rca); } #ifdef CONFIG_DEBUG_FS mmc_add_card_debugfs(card); #endif ret = device_add(&card->dev); if (ret) return ret; mmc_card_set_present(card); return 0; }
/* * Register a new MMC card with the driver model. */ int mmc_add_card(struct mmc_card *card) { int ret; const char *type; dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca); switch (card->type) { case MMC_TYPE_MMC: type = "MMC"; break; case MMC_TYPE_SD: type = "SD"; if (mmc_card_blockaddr(card)) type = "SDHC"; break; case MMC_TYPE_SDIO: type = "SDIO"; break; default: type = "?"; break; } if (mmc_host_is_spi(card->host)) { printk(KERN_INFO "%s: new %s%s card on SPI\n", mmc_hostname(card->host), mmc_card_highspeed(card) ? "high speed " : "", type); } else { printk(KERN_INFO "%s: new %s%s card at address %04x\n", mmc_hostname(card->host), mmc_card_highspeed(card) ? "high speed " : "", type, card->rca); } ret = device_add(&card->dev); if (ret) return ret; #ifdef CONFIG_DEBUG_FS mmc_add_card_debugfs(card); #endif mmc_card_set_present(card); #if 0//def CONFIG_USB_S3C_OTGD /*viking for Malata ICON*/ if(card->type != MMC_TYPE_SDIO) { if(strcmp(mmc_hostname(card->host), MMC_SDCARD) == 0) { Notify_SDMMC_Insert(1); ReConfigDefaultModeData(MMC_SDCARD_CHAN, card, CARD_INSERT); printk("####### notify Sdcard present\n"); } else if(strcmp(mmc_hostname(card->host), MMC_INAND) == 0) { Notify_iNand_Insert(1); ReConfigDefaultModeData(MMC_INAND_CHAN, card, CARD_INSERT); printk("####### notify iNand present\n"); } } #endif return 0; }
/* * Starting point for MMC card init. */ int mmc_attach_mmc(struct mmc_host *host, u32 ocr) { int err; BUG_ON(!host); WARN_ON(!host->claimed); mmc_attach_bus(host, &mmc_ops); /* * We need to get OCR a different way for SPI. */ if (mmc_host_is_spi(host)) { err = mmc_spi_read_ocr(host, 1, &ocr); if (err) goto err; } /* * Sanity check the voltages that the card claims to * support. */ if (ocr & 0x7F) { printk(KERN_WARNING "%s: card claims to support voltages " "below the defined range. These will be ignored.\n", mmc_hostname(host)); ocr &= ~0x7F; } host->ocr = mmc_select_voltage(host, ocr); /* * Can we support the voltage of the card? */ if (!host->ocr) { err = -EINVAL; goto err; } /* * Detect and init the card. */ err = mmc_init_card(host, host->ocr, NULL); if (err) goto err; mmc_release_host(host); err = mmc_add_card(host->card); if (err) goto remove_card; return 0; remove_card: mmc_remove_card(host->card); host->card = NULL; mmc_claim_host(host); err: mmc_detach_bus(host); mmc_release_host(host); printk(KERN_ERR "%s: error %d whilst initialising MMC card\n", mmc_hostname(host), err); return err; }
/** * mmc_request_done - finish processing an MMC request * @host: MMC host which completed request * @mrq: MMC request which request * * MMC drivers should call this function when they have completed * their processing of a request. */ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq) { struct mmc_command *cmd; int err; if(mrq == NULL) return; cmd = mrq->cmd; if(cmd == NULL) return; err = cmd->error; if (err && cmd->retries && mmc_host_is_spi(host)) { if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND) cmd->retries = 0; } if (err && cmd->retries) { printk("%s: req failed (CMD%u): %d, retrying...\n", mmc_hostname(host), cmd->opcode, err); cmd->retries--; cmd->error = 0; host->ops->request(host, mrq); } else { led_trigger_event(host->led, LED_OFF); pr_debug("%s: req done (CMD%u): %d: %08x %08x %08x %08x\n", mmc_hostname(host), cmd->opcode, err, cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3]); if (mrq->data) { //[NAGSM_Android_HDLNC_SDcard_shinjonghyun_20100507 : add LOG for MoviNAND debuging /* pr_debug("%s: %d bytes transferred: %d\n", mmc_hostname(host), mrq->data->bytes_xfered, mrq->data->error); */ if(mrq->data->error != 0){ printk("%s: %d bytes transferred: %d\n", mmc_hostname(host), mrq->data->bytes_xfered, mrq->data->error); } //]NAGSM_Android_HDLNC_SDcard_shinjonghyun_20100507 : add LOG for MoviNAND debuging } if (mrq->stop) { pr_debug("%s: (CMD%u): %d: %08x %08x %08x %08x\n", mmc_hostname(host), mrq->stop->opcode, mrq->stop->error, mrq->stop->resp[0], mrq->stop->resp[1], mrq->stop->resp[2], mrq->stop->resp[3]); } if (mrq->done) mrq->done(mrq); } }
/** * * added this from linux 3.10 to get better performance for 64 gb sd cards cheers Jukkaman * mmc_set_data_timeout - set the timeout for a data command * @data: data phase for command * @card: the MMC card associated with the data transfer * * Computes the data timeout parameters according to the * correct algorithm given the card type. */ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card) { unsigned int mult; /* * SDIO cards only define an upper 1 s limit on access. */ if (mmc_card_sdio(card)) { data->timeout_ns = 1000000000; data->timeout_clks = 0; return; } /* * SD cards use a 100 multiplier rather than 10 */ mult = mmc_card_sd(card) ? 100 : 10; /* * Scale up the multiplier (and therefore the timeout) by * the r2w factor for writes. */ if (data->flags & MMC_DATA_WRITE) mult <<= card->csd.r2w_factor; data->timeout_ns = card->csd.tacc_ns * mult; data->timeout_clks = card->csd.tacc_clks * mult; /* * SD cards also have an upper limit on the timeout. */ if (mmc_card_sd(card)) { unsigned int timeout_us, limit_us; timeout_us = data->timeout_ns / 1000; if (mmc_host_clk_rate(card->host)) timeout_us += data->timeout_clks * 1000 / (mmc_host_clk_rate(card->host) / 1000); if (data->flags & MMC_DATA_WRITE) /* * The MMC spec "It is strongly recommended * for hosts to implement more than 500ms * timeout value even if the card indicates * the 250ms maximum busy length." Even the * previous value of 300ms is known to be * insufficient for some cards. */ limit_us = 3000000; else limit_us = 100000; /* * SDHC cards always use these fixed values. */ if (timeout_us > limit_us || mmc_card_blockaddr(card)) { data->timeout_ns = limit_us * 1000; data->timeout_clks = 0; } } /* * Some cards require longer data read timeout than indicated in CSD. * Address this by setting the read timeout to a "reasonably high" * value. For the cards tested, 300ms has proven enough. If necessary, * this value can be increased if other problematic cards require this. */ if (mmc_card_long_read_time(card) && data->flags & MMC_DATA_READ) { data->timeout_ns = 300000000; data->timeout_clks = 0; } /* * Some cards need very high timeouts if driven in SPI mode. * The worst observed timeout was 900ms after writing a * continuous stream of data until the internal logic * overflowed. */ if (mmc_host_is_spi(card->host)) { if (data->flags & MMC_DATA_WRITE) { if (data->timeout_ns < 1000000000) data->timeout_ns = 1000000000; /* 1s */ } else { if (data->timeout_ns < 100000000) data->timeout_ns = 100000000; /* 100ms */ } } }
/* * Handle the detection and initialisation of a card. * * In the case of a resume, "oldcard" will contain the card * we're trying to reinitialise. */ static int mmc_init_card(struct mmc_host *host, u32 ocr, struct mmc_card *oldcard) { struct mmc_card *card; int err; u32 cid[4]; unsigned int max_dtr; u32 rocr; BUG_ON(!host); WARN_ON(!host->claimed); /* * Since we're changing the OCR value, we seem to * need to tell some cards to go back to the idle * state. We wait 1ms to give cards time to * respond. */ mmc_go_idle(host); /* The extra bit indicates that we support high capacity */ err = mmc_send_op_cond(host, ocr | MMC_CARD_SECTOR_ADDR, &rocr); if (err) goto err; /* * For SPI, enable CRC as appropriate. */ if (mmc_host_is_spi(host)) { err = mmc_spi_set_crc(host, use_spi_crc); if (err) goto err; } /* * Fetch CID from card. */ if (mmc_host_is_spi(host)) err = mmc_send_cid(host, cid); else err = mmc_all_send_cid(host, cid); if (err) goto err; if (oldcard) { if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { err = -ENOENT; goto err; } card = oldcard; } else { /* * Allocate card structure. */ card = mmc_alloc_card(host, &mmc_type); if (IS_ERR(card)) { err = PTR_ERR(card); goto err; } card->type = MMC_TYPE_MMC; card->rca = 1; memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); } /* * For native busses: set card RCA and quit open drain mode. */ if (!mmc_host_is_spi(host)) { err = mmc_set_relative_addr(card); if (err) goto free_card; mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } if (!oldcard) { /* * Fetch CSD from card. */ err = mmc_send_csd(card, card->raw_csd); if (err) goto free_card; err = mmc_decode_csd(card); if (err) goto free_card; err = mmc_decode_cid(card); if (err) goto free_card; } /* * Select card, as all following commands rely on that. */ if (!mmc_host_is_spi(host)) { err = mmc_select_card(card); if (err) goto free_card; } if (!oldcard) { /* * Fetch and process extended CSD. */ err = mmc_read_ext_csd(card); if (err) goto free_card; #ifdef CONFIG_MMC_DISCARD //PS1 TEAM SHS : SAMSUNG PATCH /* Erase size depends on CSD and Extended CSD */ mmc_set_erase_size(card); #endif /* CONFIG_MMC_DISCARD */ //PS1 TEAM SHS : SAMSUNG PATCH if (card->ext_csd.sectors && (rocr & MMC_CARD_SECTOR_ADDR)) mmc_card_set_blockaddr(card); } /* * Activate high speed (if supported) */ if ((card->ext_csd.hs_max_dtr != 0) && (host->caps & MMC_CAP_MMC_HIGHSPEED)) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); if (err && err != -EBADMSG) goto free_card; if (err) { printk(KERN_WARNING "%s: switch to highspeed failed\n", mmc_hostname(card->host)); err = 0; } else { mmc_card_set_highspeed(card); mmc_set_timing(card->host, MMC_TIMING_MMC_HS); } } /* * Compute bus speed. */ max_dtr = (unsigned int)-1; if (mmc_card_highspeed(card)) { if (max_dtr > card->ext_csd.hs_max_dtr) max_dtr = card->ext_csd.hs_max_dtr; } else if (max_dtr > card->csd.max_dtr) { max_dtr = card->csd.max_dtr; } mmc_set_clock(host, max_dtr); /* * Activate wide bus (if supported). */ if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { unsigned ext_csd_bit, bus_width; if ((host->caps & MMC_CAP_8_BIT_DATA) && !(mmc_bustest(host, card, MMC_BUS_WIDTH_8))) { pr_debug("Setting the bus width to 8 bit\n"); ext_csd_bit = EXT_CSD_BUS_WIDTH_8; bus_width = MMC_BUS_WIDTH_8; } else if (!(mmc_bustest(host, card, MMC_BUS_WIDTH_4))) { pr_debug("Setting the bus width to 4 bit\n"); ext_csd_bit = EXT_CSD_BUS_WIDTH_4; bus_width = MMC_BUS_WIDTH_4; } else { pr_debug("Setting the bus width to 1 bit\n"); ext_csd_bit = EXT_CSD_BUS_WIDTH_1; bus_width = MMC_BUS_WIDTH_1; } err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, ext_csd_bit); if (err && err != -EBADMSG) goto free_card; if (err) { printk(KERN_WARNING "%s: switch to bus width %d " "failed\n", mmc_hostname(card->host), 1 << bus_width); err = 0; } else { mmc_set_bus_width(card->host, bus_width); } } if (!oldcard) host->card = card; return 0; free_card: if (!oldcard) mmc_remove_card(card); err: return err; }
/* * Handle the detection and initialisation of a card. * * In the case of a resume, "oldcard" will contain the card * we're trying to reinitialise. */ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, struct mmc_card *oldcard) { struct mmc_card *card; int err; u32 cid[4]; unsigned int max_dtr; #ifdef CONFIG_MMC_PARANOID_SD_INIT int retries; #endif BUG_ON(!host); WARN_ON(!host->claimed); #ifdef CONFIG_ARCH_EMXX /* initialize select state */ host->select = 0xffffffff; #endif /* * Since we're changing the OCR value, we seem to * need to tell some cards to go back to the idle * state. We wait 1ms to give cards time to * respond. */ mmc_go_idle(host); /* * If SD_SEND_IF_COND indicates an SD 2.0 * compliant card and we should set bit 30 * of the ocr to indicate that we can handle * block-addressed SDHC cards. */ err = mmc_send_if_cond(host, ocr); if (!err) ocr |= 1 << 30; err = mmc_send_app_op_cond(host, ocr, NULL); if (err) goto err; /* * Fetch CID from card. */ if (mmc_host_is_spi(host)) err = mmc_send_cid(host, cid); else err = mmc_all_send_cid(host, cid); if (err) goto err; if (oldcard) { if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { err = -ENOENT; goto err; } card = oldcard; } else { /* * Allocate card structure. */ card = mmc_alloc_card(host, &sd_type); if (IS_ERR(card)) { err = PTR_ERR(card); goto err; } card->type = MMC_TYPE_SD; memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); } /* * For native busses: get card RCA and quit open drain mode. */ if (!mmc_host_is_spi(host)) { err = mmc_send_relative_addr(host, &card->rca); if (err) goto free_card; mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } if (!oldcard) { /* * Fetch CSD from card. */ err = mmc_send_csd(card, card->raw_csd); if (err) goto free_card; err = mmc_decode_csd(card); if (err) goto free_card; mmc_decode_cid(card); } /* * Select card, as all following commands rely on that. */ if (!mmc_host_is_spi(host)) { err = mmc_select_card(card); if (err) goto free_card; } if (!oldcard) { /* * Fetch SCR from card. */ err = mmc_app_send_scr(card, card->raw_scr); if (err) goto free_card; err = mmc_decode_scr(card); if (err < 0) goto free_card; /* * Fetch switch information from card. */ #ifdef CONFIG_MMC_PARANOID_SD_INIT for (retries = 1; retries <= 3; retries++) { err = mmc_read_switch(card); if (!err) { if (retries > 1) { printk(KERN_WARNING "%s: recovered\n", mmc_hostname(host)); } break; } else { printk(KERN_WARNING "%s: read switch failed (attempt %d)\n", mmc_hostname(host), retries); } } #else err = mmc_read_switch(card); #endif if (err) goto free_card; } /* * For SPI, enable CRC as appropriate. * This CRC enable is located AFTER the reading of the * card registers because some SDHC cards are not able * to provide valid CRCs for non-512-byte blocks. */ if (mmc_host_is_spi(host)) { err = mmc_spi_set_crc(host, use_spi_crc); if (err) goto free_card; } /* * Attempt to change to high-speed (if supported) */ err = mmc_switch_hs(card); if (err) goto free_card; /* * Compute bus speed. */ max_dtr = (unsigned int)-1; if (mmc_card_highspeed(card)) { if (max_dtr > card->sw_caps.hs_max_dtr) max_dtr = card->sw_caps.hs_max_dtr; } else if (max_dtr > card->csd.max_dtr) { max_dtr = card->csd.max_dtr; } mmc_set_clock(host, max_dtr); /* * Switch to wider bus (if supported). */ if ((host->caps & MMC_CAP_4_BIT_DATA) && (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); if (err) goto free_card; mmc_set_bus_width(host, MMC_BUS_WIDTH_4); } /* * Check if read-only switch is active. */ if (!oldcard) { if (!host->ops->get_ro || host->ops->get_ro(host) < 0) { printk(KERN_WARNING "%s: host does not " "support reading read-only " "switch. assuming write-enable.\n", mmc_hostname(host)); } else { if (host->ops->get_ro(host) > 0) mmc_card_set_readonly(card); } } #ifdef CONFIG_ARCH_EMXX if (!oldcard) host->card[0] = card; #else if (!oldcard) host->card = card; #endif return 0; free_card: if (!oldcard) mmc_remove_card(card); err: return err; }
/* * Handle the detection and initialisation of a card. * * In the case of a resume, "oldcard" will contain the card * we're trying to reinitialise. */ static int mmc_init_card(struct mmc_host *host, u32 ocr, struct mmc_card *oldcard) { struct mmc_card *card; int err; u32 cid[4]; #if defined(CONFIG_INAND_VERSION_PATCH) u32 rocr[1]; #endif unsigned int max_dtr; #ifdef CONFIG_MMC_SLC int i; #endif /* CONFIG_MMC_SLC */ BUG_ON(!host); WARN_ON(!host->claimed); #ifdef CONFIG_MMC_SLC for (i = 0; i < 2; i++) { #endif /* CONFIG_MMC_SLC */ /* * Since we're changing the OCR value, we seem to * need to tell some cards to go back to the idle * state. We wait 1ms to give cards time to * respond. */ mmc_go_idle(host); /* The extra bit indicates that we support high capacity */ #if defined(CONFIG_INAND_VERSION_PATCH) err = mmc_send_op_cond(host, ocr | (1 << 30), rocr); #else err = mmc_send_op_cond(host, ocr | (1 << 30), NULL); #endif if (err) goto err; /* * For SPI, enable CRC as appropriate. */ if (mmc_host_is_spi(host)) { err = mmc_spi_set_crc(host, use_spi_crc); if (err) goto err; } /* * Fetch CID from card. */ if (mmc_host_is_spi(host)) err = mmc_send_cid(host, cid); else err = mmc_all_send_cid(host, cid); if (err) goto err; if (oldcard) { if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { err = -ENOENT; goto err; } card = oldcard; } else { /* * Allocate card structure. */ card = mmc_alloc_card(host, &mmc_type); if (IS_ERR(card)) { err = PTR_ERR(card); goto err; } card->type = MMC_TYPE_MMC; card->rca = 1; memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); host->card = card; } /* * For native busses: set card RCA and quit open drain mode. */ if (!mmc_host_is_spi(host)) { err = mmc_set_relative_addr(card); if (err) goto free_card; mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } if (!oldcard) { /* * Fetch CSD from card. */ err = mmc_send_csd(card, card->raw_csd); if (err) goto free_card; err = mmc_decode_csd(card); if (err) goto free_card; err = mmc_decode_cid(card); if (err) goto free_card; } /* * Select card, as all following commands rely on that. */ if (!mmc_host_is_spi(host)) { err = mmc_select_card(card); if (err) goto free_card; } if (!oldcard) { /* * Fetch and process extended CSD. */ err = mmc_read_ext_csd(card); if (err) goto free_card; #if defined(CONFIG_INAND_VERSION_PATCH) if (rocr[0] & 0x40000000) mmc_card_set_blockaddr(card); #endif } /* * Activate high speed (if supported) */ if ((card->ext_csd.hs_max_dtr != 0) && (host->caps & MMC_CAP_MMC_HIGHSPEED)) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); if (err && err != -EBADMSG) goto free_card; if (err) { printk(KERN_WARNING "%s: switch to highspeed failed\n", mmc_hostname(card->host)); err = 0; } else { mmc_card_set_highspeed(card); mmc_set_timing(card->host, MMC_TIMING_MMC_HS); } } /* * Compute bus speed. */ max_dtr = (unsigned int)-1; if (mmc_card_highspeed(card)) { if (max_dtr > card->ext_csd.hs_max_dtr) max_dtr = card->ext_csd.hs_max_dtr; } else if (max_dtr > card->csd.max_dtr) { max_dtr = card->csd.max_dtr; } mmc_set_clock(host, max_dtr); /* * Activate wide bus (if supported). */ if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { unsigned ext_csd_bit, bus_width; if (host->caps & MMC_CAP_8_BIT_DATA) { ext_csd_bit = EXT_CSD_BUS_WIDTH_8; bus_width = MMC_BUS_WIDTH_8; } else { ext_csd_bit = EXT_CSD_BUS_WIDTH_4; bus_width = MMC_BUS_WIDTH_4; } err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, ext_csd_bit); if (err && err != -EBADMSG) goto free_card; if (err) { printk(KERN_WARNING "%s: switch to bus width %d failed\n" , mmc_hostname(card->host), 1 << bus_width); err = 0; } else { mmc_set_bus_width(card->host, bus_width); printk(KERN_DEBUG "%s: switch to bus width %d\n" , mmc_hostname(card->host), 1 << bus_width); } } #ifdef CONFIG_MMC_SLC if (card->ext_csd.enhanced == 0) { if (i == 0) { printk(KERN_DEBUG "mmc%d: set SLC\n", host->index); mmc_set_slc(host->card); mmc_power_reset(host, 1); } else { printk(KERN_ERR "mmc%d: setting SLC failed\n", host->index); break; } } else { printk(KERN_DEBUG "mmc%d: SLC enabled\n", host->index); break; } } #endif /* CONFIG_MMC_SLC */ return 0; free_card: if (!oldcard) { mmc_remove_card(card); host->card = NULL; } err: return err; }
/* * Handle the detection and initialisation of a card. * * In the case of a resume, "oldcard" will contain the card * we're trying to reinitialise. */ static int mmc_init_card(struct mmc_host *host, u32 ocr, struct mmc_card *oldcard) { struct mmc_card *card; int err, ddr = 0; u32 cid[4]; unsigned int max_dtr; u32 rocr; BUG_ON(!host); WARN_ON(!host->claimed); /* * Since we're changing the OCR value, we seem to * need to tell some cards to go back to the idle * state. We wait 1ms to give cards time to * respond. */ mmc_go_idle(host); /* The extra bit indicates that we support high capacity */ err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); if (err) goto err; /* * For SPI, enable CRC as appropriate. */ if (mmc_host_is_spi(host)) { err = mmc_spi_set_crc(host, use_spi_crc); if (err) goto err; } /* * Fetch CID from card. */ if (mmc_host_is_spi(host)) err = mmc_send_cid(host, cid); else err = mmc_all_send_cid(host, cid); if (err) goto err; if (oldcard) { if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { err = -ENOENT; goto err; } card = oldcard; } else { /* * Allocate card structure. */ card = mmc_alloc_card(host, &mmc_type); if (IS_ERR(card)) { err = PTR_ERR(card); goto err; } card->type = MMC_TYPE_MMC; card->rca = 1; memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); } /* * For native busses: set card RCA and quit open drain mode. */ if (!mmc_host_is_spi(host)) { err = mmc_set_relative_addr(card); if (err) goto free_card; mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } if (!oldcard) { /* * Fetch CSD from card. */ err = mmc_send_csd(card, card->raw_csd); if (err) goto free_card; err = mmc_decode_csd(card); if (err) goto free_card; err = mmc_decode_cid(card); if (err) goto free_card; } /* * Select card, as all following commands rely on that. */ if (!mmc_host_is_spi(host)) { err = mmc_select_card(card); if (err) goto free_card; } if (!oldcard) { /* * Fetch and process extended CSD. */ err = mmc_read_ext_csd(card); if (err) goto free_card; /* If doing byte addressing, check if required to do sector * addressing. Handle the case of <2GB cards needing sector * addressing. See section 8.1 JEDEC Standard JED84-A441; * ocr register has bit 30 set for sector addressing. */ if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) mmc_card_set_blockaddr(card); /* Erase size depends on CSD and Extended CSD */ mmc_set_erase_size(card); } /* htc: For SanDisk X3, we have to enable power class 4 */ if (card->cid.manfid == 0x45) { if (card->ext_csd.sectors > 33554432) { /* the storage size larger than 16GB */ if (card->ext_csd.max_enh_size_mult < 0xEC) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_POWER_CLASS, 4); if (err && err != -EBADMSG) goto free_card; if (err) { printk(KERN_WARNING "%s: switch to power class 4 failed\n", mmc_hostname(card->host)); err = 0; } else { printk(KERN_WARNING "%s: switch to power class 4 sucessfully\n", mmc_hostname(card->host)); } } } } /* * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF * bit. This bit will be lost every time after a reset or power off. */ /* htc: set ERASE_GRP_DET to 1 anyway */ //if (card->ext_csd.enhanced_area_en) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_ERASE_GROUP_DEF, 1); if (err && err != -EBADMSG) goto free_card; if (err) { err = 0; /* * Just disable enhanced area off & sz * will try to enable ERASE_GROUP_DEF * during next time reinit */ card->ext_csd.enhanced_area_offset = -EINVAL; card->ext_csd.enhanced_area_size = -EINVAL; } else { card->ext_csd.erase_group_def = 1; /* * enable ERASE_GRP_DEF successfully. * This will affect the erase size, so * here need to reset erase size */ mmc_set_erase_size(card); } //} /** * Enable boot mode (if not enabled yet) */ #if 0 if (card->ext_csd.part_conf != 0x48) { printk(KERN_INFO "%s: Got default part_conf setting, modify it...\n", mmc_hostname(card->host)); err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PARTITION_CFG, 0x48); if (err && err != -EBADMSG) { printk(KERN_ERR "%s: switch command to set EXT_CSD_PARTITION_CONFIG failed\n", mmc_hostname(card->host)); goto free_card; } else { printk(KERN_INFO "%s: boot_mode is enabled\n", mmc_hostname(card->host)); } } #endif /* * Activate high speed (if supported) */ if ((card->ext_csd.hs_max_dtr != 0) && (host->caps & MMC_CAP_MMC_HIGHSPEED)) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); if (err && err != -EBADMSG) goto free_card; if (err) { printk(KERN_WARNING "%s: switch to highspeed failed\n", mmc_hostname(card->host)); err = 0; } else { mmc_card_set_highspeed(card); mmc_set_timing(card->host, MMC_TIMING_MMC_HS); } } /* * Enable HPI feature (if supported) */ if (card->ext_csd.hpi && (card->host->caps & MMC_CAP_BKOPS)) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HPI_MGMT, 1); if (err && err != -EBADMSG) goto free_card; if (err) { pr_warning("%s: Enabling HPI failed\n", mmc_hostname(card->host)); err = 0; } else { card->ext_csd.hpi_en = 1; } } /* * Enable Background ops feature (if supported) */ if (card->ext_csd.bk_ops && (card->host->caps & MMC_CAP_BKOPS)) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BKOPS_EN, 1); if (err && err != -EBADMSG) goto free_card; if (err) { pr_warning("%s: Enabling BK ops failed\n", mmc_hostname(card->host)); err = 0; } else { card->ext_csd.bk_ops_en = 1; } } /* * Compute bus speed. */ max_dtr = (unsigned int)-1; if (mmc_card_highspeed(card)) { if (max_dtr > card->ext_csd.hs_max_dtr) max_dtr = card->ext_csd.hs_max_dtr; } else if (max_dtr > card->csd.max_dtr) { max_dtr = card->csd.max_dtr; } mmc_set_clock(host, max_dtr); /* TODO workaround for SanDisk X3 eMMC */ if (card->cid.manfid == 0x45) { if (card->ext_csd.sectors > 33554432) { /* the storage size larger than 16GB */ printk(KERN_INFO "%s: Force to use SDR for SanDisk X3\n", mmc_hostname(card->host)); host->caps &= ~MMC_CAP_1_8V_DDR; host->caps &= ~MMC_CAP_1_2V_DDR; host->caps &= ~MMC_CAP_UHS_DDR50; } } /* * Indicate DDR mode (if supported). */ if (mmc_card_highspeed(card)) { if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) && ((host->caps & (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50)) == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) ddr = MMC_1_8V_DDR_MODE; else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) && ((host->caps & (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50)) == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) ddr = MMC_1_2V_DDR_MODE; } /* * Activate wide bus and DDR (if supported). */ if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { static unsigned ext_csd_bits[][2] = { { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, }; static unsigned bus_widths[] = { MMC_BUS_WIDTH_8, MMC_BUS_WIDTH_4, MMC_BUS_WIDTH_1 }; unsigned idx, bus_width = 0; if (host->caps & MMC_CAP_8_BIT_DATA) idx = 0; else idx = 1; for (; idx < ARRAY_SIZE(bus_widths); idx++) { bus_width = bus_widths[idx]; if (bus_width == MMC_BUS_WIDTH_1) ddr = 0; /* no DDR for 1-bit width */ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, ext_csd_bits[idx][0]); if (!err) { mmc_set_bus_width(card->host, bus_width); /* * If controller can't handle bus width test, * use the highest bus width to maintain * compatibility with previous MMC behavior. */ if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) break; err = mmc_bus_test(card, bus_width); if (!err) break; } } if (!err && ddr) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, ext_csd_bits[idx][1]); } if (err) { printk(KERN_WARNING "%s: switch to bus width %d ddr %d " "failed\n", mmc_hostname(card->host), 1 << bus_width, ddr); goto free_card; } else if (ddr) { /* * eMMC cards can support 3.3V to 1.2V i/o (vccq) * signaling. * * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. * * 1.8V vccq at 3.3V core voltage (vcc) is not required * in the JEDEC spec for DDR. * * Do not force change in vccq since we are obviously * working and no change to vccq is needed. * * WARNING: eMMC rules are NOT the same as SD DDR */ if (ddr == EXT_CSD_CARD_TYPE_DDR_1_2V) { err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); if (err) goto err; } mmc_card_set_ddr_mode(card); mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); mmc_set_bus_width(card->host, bus_width); } } if (!oldcard) host->card = card; return 0; free_card: if (!oldcard) mmc_remove_card(card); err: return err; }
int sd_send_op_cond(struct mmc *mmc) { int timeout = 1000; int err; struct mmc_cmd cmd; do { cmd.cmdidx = MMC_CMD_APP_CMD; cmd.resp_type = MMC_RSP_R1; cmd.cmdarg = 0; cmd.flags = 0; err = mmc_send_cmd(mmc, &cmd, NULL); if (err) return err; cmd.cmdidx = SD_CMD_APP_SEND_OP_COND; cmd.resp_type = MMC_RSP_R3; /* * Most cards do not answer if some reserved bits * in the ocr are set. However, Some controller * can set bit 7 (reserved for low voltages), but * how to manage low voltages SD card is not yet * specified. */ cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 : (mmc->voltages & 0xff8000); if (mmc->version == SD_VERSION_2) cmd.cmdarg |= OCR_HCS; err = mmc_send_cmd(mmc, &cmd, NULL); if (err) return err; udelay(1000); } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--); if (timeout <= 0) return UNUSABLE_ERR; if (mmc->version != SD_VERSION_2) mmc->version = SD_VERSION_1_0; if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ cmd.cmdidx = MMC_CMD_SPI_READ_OCR; cmd.resp_type = MMC_RSP_R3; cmd.cmdarg = 0; cmd.flags = 0; err = mmc_send_cmd(mmc, &cmd, NULL); if (err) return err; } mmc->ocr = cmd.response[0]; mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); mmc->rca = 0; return 0; }