diff options
Diffstat (limited to 'components/drivers/sdio/mmc.c')
| -rw-r--r-- | components/drivers/sdio/mmc.c | 134 |
1 files changed, 67 insertions, 67 deletions
diff --git a/components/drivers/sdio/mmc.c b/components/drivers/sdio/mmc.c index c1c56d37fd..5aba3dba7a 100644 --- a/components/drivers/sdio/mmc.c +++ b/components/drivers/sdio/mmc.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2006-2018, RT-Thread Development Team + * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * @@ -45,9 +45,9 @@ static const rt_uint8_t tacc_value[] = rt_inline rt_uint32_t GET_BITS(rt_uint32_t *resp, rt_uint32_t start, rt_uint32_t size) -{ +{ const rt_int32_t __size = size; - const rt_uint32_t __mask = (__size < 32 ? 1 << __size : 0) - 1; + const rt_uint32_t __mask = (__size < 32 ? 1 << __size : 0) - 1; const rt_int32_t __off = 3 - ((start) / 32); const rt_int32_t __shft = (start) & 31; rt_uint32_t __res; @@ -67,7 +67,7 @@ static rt_int32_t mmcsd_parse_csd(struct rt_mmcsd_card *card) rt_uint32_t a, b; struct rt_mmcsd_csd *csd = &card->csd; rt_uint32_t *resp = card->resp_csd; - + /* * We only understand CSD structure v1.1 and v1.2. * v1.2 has extra information in bits 15, 11 and 10. @@ -76,10 +76,10 @@ static rt_int32_t mmcsd_parse_csd(struct rt_mmcsd_card *card) csd->csd_structure = GET_BITS(resp, 126, 2); if (csd->csd_structure == 0) { LOG_E("unrecognised CSD structure version %d!", csd->csd_structure); - + return -RT_ERROR; } - + csd->taac = GET_BITS(resp, 112, 8); csd->nsac = GET_BITS(resp, 104, 8); csd->tran_speed = GET_BITS(resp, 96, 8); @@ -95,7 +95,7 @@ static rt_int32_t mmcsd_parse_csd(struct rt_mmcsd_card *card) csd->wr_blk_len = GET_BITS(resp, 22, 4); csd->wr_blk_partial = GET_BITS(resp, 21, 1); csd->csd_crc = GET_BITS(resp, 1, 7); - + card->card_blksize = 1 << csd->rd_blk_len; card->tacc_clks = csd->nsac * 100; card->tacc_ns = (tacc_uint[csd->taac&0x07] * tacc_value[(csd->taac&0x78)>>3] + 9) / 10; @@ -106,7 +106,7 @@ static rt_int32_t mmcsd_parse_csd(struct rt_mmcsd_card *card) card->erase_size = (a + 1) * (b + 1); card->erase_size <<= csd->wr_blk_len - 9; } - + return 0; } @@ -119,12 +119,12 @@ static int mmc_get_ext_csd(struct rt_mmcsd_card *card, rt_uint8_t **new_ext_csd) struct rt_mmcsd_req req; struct rt_mmcsd_cmd cmd; struct rt_mmcsd_data data; - + *new_ext_csd = RT_NULL; - + if (GET_BITS(card->resp_cid, 122, 4) < 4) return 0; - + /* * As the ext_csd is so large and mostly unused, we don't store the * raw block in mmc_card. @@ -134,29 +134,29 @@ static int mmc_get_ext_csd(struct rt_mmcsd_card *card, rt_uint8_t **new_ext_csd) LOG_E("alloc memory failed when get ext csd!"); return -RT_ENOMEM; } - + rt_memset(&req, 0, sizeof(struct rt_mmcsd_req)); rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd)); rt_memset(&data, 0, sizeof(struct rt_mmcsd_data)); - + req.cmd = &cmd; req.data = &data; - + cmd.cmd_code = SEND_EXT_CSD; cmd.arg = 0; - + /* NOTE HACK: the RESP_SPI_R1 is always correct here, but we * rely on callers to never use this with "native" calls for reading * CSD or CID. Native versions of those commands use the R2 type, * not R1 plus a data block. */ cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_ADTC; - + data.blksize = 512; data.blks = 1; data.flags = DATA_DIR_READ; data.buf = ext_csd; - + /* * Some cards require longer data read timeout than indicated in CSD. * Address this by setting the read timeout to a "reasonably high" @@ -165,14 +165,14 @@ static int mmc_get_ext_csd(struct rt_mmcsd_card *card, rt_uint8_t **new_ext_csd) */ data.timeout_ns = 300000000; data.timeout_clks = 0; - + mmcsd_send_request(card->host, &req); - + if (cmd.err) return cmd.err; if (data.err) return data.err; - + *new_ext_csd = ext_csd; return 0; } @@ -192,13 +192,13 @@ static int mmc_parse_ext_csd(struct rt_mmcsd_card *card, rt_uint8_t *ext_csd) card->flags |= CARD_FLAG_HIGHSPEED; card->hs_max_data_rate = 52000000; - + card_capacity = *((rt_uint32_t *)&ext_csd[EXT_CSD_SEC_CNT]); card_capacity *= card->card_blksize; card_capacity >>= 10; /* unit:KB */ card->card_capacity = card_capacity; LOG_I("emmc card capacity %d KB.", card->card_capacity); - + return 0; } @@ -211,41 +211,41 @@ static int mmc_parse_ext_csd(struct rt_mmcsd_card *card, rt_uint8_t *ext_csd) * * Modifies the EXT_CSD register for selected card. */ -static int mmc_switch(struct rt_mmcsd_card *card, rt_uint8_t set, +static int mmc_switch(struct rt_mmcsd_card *card, rt_uint8_t set, rt_uint8_t index, rt_uint8_t value) { int err; struct rt_mmcsd_host *host = card->host; struct rt_mmcsd_cmd cmd = {0}; - + cmd.cmd_code = SWITCH; cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | (index << 16) | (value << 8) | set; cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_AC; - + err = mmcsd_send_cmd(host, &cmd, 3); if (err) return err; - + return 0; } -static int mmc_compare_ext_csds(struct rt_mmcsd_card *card, +static int mmc_compare_ext_csds(struct rt_mmcsd_card *card, rt_uint8_t *ext_csd, rt_uint32_t bus_width) { rt_uint8_t *bw_ext_csd; int err; - + if (bus_width == MMCSD_BUS_WIDTH_1) return 0; - + err = mmc_get_ext_csd(card, &bw_ext_csd); - + if (err || bw_ext_csd == RT_NULL) { err = -RT_ERROR; goto out; } - + /* only compare read only fields */ err = !((ext_csd[EXT_CSD_PARTITION_SUPPORT] == bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && (ext_csd[EXT_CSD_ERASED_MEM_CONT] == bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && @@ -273,10 +273,10 @@ static int mmc_compare_ext_csds(struct rt_mmcsd_card *card, (ext_csd[EXT_CSD_PWR_CL_DDR_52_195] == bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && (ext_csd[EXT_CSD_PWR_CL_DDR_52_360] == bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && (ext_csd[EXT_CSD_PWR_CL_DDR_200_360] == bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); - + if (err) err = -RT_ERROR; - + out: rt_free(bw_ext_csd); return err; @@ -302,10 +302,10 @@ static int mmc_select_bus_width(struct rt_mmcsd_card *card, rt_uint8_t *ext_csd) struct rt_mmcsd_host *host = card->host; unsigned idx, bus_width = 0; int err = 0; - + if (GET_BITS(card->resp_cid, 122, 4) < 4) return 0; - + /* * Unlike SD, MMC cards dont have a configuration register to notify * supported bus width. So bus test command should be run to identify @@ -323,18 +323,18 @@ static int mmc_select_bus_width(struct rt_mmcsd_card *card, rt_uint8_t *ext_csd) * set by drivers. */ if ((!(host->flags & MMCSD_BUSWIDTH_8) && - ext_csd_bits[idx] == EXT_CSD_BUS_WIDTH_8) || + ext_csd_bits[idx] == EXT_CSD_BUS_WIDTH_8) || (!(host->flags & MMCSD_BUSWIDTH_4) && - (ext_csd_bits[idx] == EXT_CSD_BUS_WIDTH_4 || - ext_csd_bits[idx] == EXT_CSD_BUS_WIDTH_8))) - continue; + (ext_csd_bits[idx] == EXT_CSD_BUS_WIDTH_4 || + ext_csd_bits[idx] == EXT_CSD_BUS_WIDTH_8))) + continue; err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, ext_csd_bits[idx]); if (err) continue; - + bus_width = bus_widths[idx]; mmcsd_set_bus_width(host, bus_width); mmcsd_delay_ms(20); //delay 10ms @@ -358,10 +358,10 @@ static int mmc_select_bus_width(struct rt_mmcsd_card *card, rt_uint8_t *ext_csd) } } } - + return err; } -rt_err_t mmc_send_op_cond(struct rt_mmcsd_host *host, +rt_err_t mmc_send_op_cond(struct rt_mmcsd_host *host, rt_uint32_t ocr, rt_uint32_t *rocr) { struct rt_mmcsd_cmd cmd; @@ -369,20 +369,20 @@ rt_err_t mmc_send_op_cond(struct rt_mmcsd_host *host, rt_err_t err = RT_EOK; rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd)); - + cmd.cmd_code = SEND_OP_COND; cmd.arg = controller_is_spi(host) ? 0 : ocr; cmd.flags = RESP_SPI_R1 | RESP_R3 | CMD_BCR; - + for (i = 100; i; i--) { err = mmcsd_send_cmd(host, &cmd, 3); if (err) break; - + /* if we're just probing, do a single pass */ if (ocr == 0) break; - + /* otherwise wait until reset completes */ if (controller_is_spi(host)) { if (!(cmd.resp[0] & R1_SPI_IDLE)) @@ -391,15 +391,15 @@ rt_err_t mmc_send_op_cond(struct rt_mmcsd_host *host, if (cmd.resp[0] & CARD_BUSY) break; } - + err = -RT_ETIMEOUT; - + mmcsd_delay_ms(10); //delay 10ms } - + if (rocr && !controller_is_spi(host)) *rocr = cmd.resp[0]; - + return err; } @@ -407,17 +407,17 @@ static rt_err_t mmc_set_card_addr(struct rt_mmcsd_host *host, rt_uint32_t rca) { rt_err_t err; struct rt_mmcsd_cmd cmd; - + rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd)); - + cmd.cmd_code = SET_RELATIVE_ADDR; cmd.arg = rca << 16; cmd.flags = RESP_R1 | CMD_AC; - + err = mmcsd_send_cmd(host, &cmd, 3); if (err) return err; - + return 0; } @@ -432,19 +432,19 @@ static rt_int32_t mmcsd_mmc_init_card(struct rt_mmcsd_host *host, struct rt_mmcsd_card *card = RT_NULL; mmcsd_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; - - if (controller_is_spi(host)) + + if (controller_is_spi(host)) { err = mmcsd_spi_use_crc(host, 1); if (err) goto err1; } - + if (controller_is_spi(host)) err = mmcsd_get_cid(host, resp); else @@ -453,7 +453,7 @@ static rt_int32_t mmcsd_mmc_init_card(struct rt_mmcsd_host *host, goto err; card = rt_malloc(sizeof(struct rt_mmcsd_card)); - if (!card) + if (!card) { LOG_E("malloc card failed!"); err = -RT_ENOMEM; @@ -469,7 +469,7 @@ static rt_int32_t mmcsd_mmc_init_card(struct rt_mmcsd_host *host, /* * For native busses: get card RCA and quit open drain mode. */ - if (!controller_is_spi(host)) + if (!controller_is_spi(host)) { err = mmc_set_card_addr(host, card->rca); if (err) @@ -486,24 +486,24 @@ static rt_int32_t mmcsd_mmc_init_card(struct rt_mmcsd_host *host, if (err) goto err1; - if (!controller_is_spi(host)) + if (!controller_is_spi(host)) { err = mmcsd_select_card(card); if (err) goto err1; } - + /* * Fetch and process extended CSD. */ - + err = mmc_get_ext_csd(card, &ext_csd); if (err) goto err1; err = mmc_parse_ext_csd(card, ext_csd); if (err) goto err1; - + /* 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; @@ -511,9 +511,9 @@ static rt_int32_t mmcsd_mmc_init_card(struct rt_mmcsd_host *host, */ if (!(card->flags & CARD_FLAG_SDHC) && (rocr & (1<<30))) card->flags |= CARD_FLAG_SDHC; - + /* set bus speed */ - if (card->flags & CARD_FLAG_HIGHSPEED) + if (card->flags & CARD_FLAG_HIGHSPEED) max_data_rate = card->hs_max_data_rate; else max_data_rate = card->max_data_rate; @@ -522,7 +522,7 @@ static rt_int32_t mmcsd_mmc_init_card(struct rt_mmcsd_host *host, /*switch bus width*/ mmc_select_bus_width(card, ext_csd); - + host->card = card; rt_free(ext_csd); |