diff options
Diffstat (limited to 'drivers/mmc/core/block.c')
| -rw-r--r-- | drivers/mmc/core/block.c | 46 |
1 files changed, 19 insertions, 27 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 9cc47bf94804..a74e75df93b0 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -121,6 +121,10 @@ struct rpmb_frame { #define RPMB_READ_DATA 0x4 /* Read data from RPMB partition */ #define RPMB_RESULT_READ 0x5 /* Read result request (Internal) */ +#define RPMB_FRAME_SIZE sizeof(struct rpmb_frame) +#define CHECK_SIZE_NEQ(val) ((val) != sizeof(struct rpmb_frame)) +#define CHECK_SIZE_ALIGNED(val) IS_ALIGNED((val), sizeof(struct rpmb_frame)) + static DEFINE_MUTEX(block_mutex); /* @@ -1768,8 +1772,7 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, * these, while retaining features like reliable writes. */ if ((md->flags & MMC_BLK_CMD23) && mmc_op_multi(brq->cmd.opcode) && - (do_rel_wr || !(card->quirks & MMC_QUIRK_BLK_NO_CMD23) || - do_data_tag)) { + (do_rel_wr || !mmc_card_blk_no_cmd23(card) || do_data_tag)) { brq->sbc.opcode = MMC_SET_BLOCK_COUNT; brq->sbc.arg = brq->data.blocks | (do_rel_wr ? (1 << 31) : 0) | @@ -2618,13 +2621,8 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, */ md->read_only = mmc_blk_readonly(card); - if (mmc_host_can_cmd23(card->host)) { - if ((mmc_card_mmc(card) && - card->csd.mmca_vsn >= CSD_SPEC_VER_3) || - (mmc_card_sd(card) && !mmc_card_ult_capacity(card) && - card->scr.cmds & SD_SCR_CMD23_SUPPORT)) - md->flags |= MMC_BLK_CMD23; - } + if (mmc_host_can_cmd23(card->host) && mmc_card_can_cmd23(card)) + md->flags |= MMC_BLK_CMD23; if (md->flags & MMC_BLK_CMD23 && ((card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN) || @@ -2864,12 +2862,12 @@ static void set_idata(struct mmc_blk_ioc_data *idata, u32 opcode, * The size of an RPMB frame must match what's expected by the * hardware. */ - BUILD_BUG_ON(sizeof(struct rpmb_frame) != 512); + static_assert(!CHECK_SIZE_NEQ(512), "RPMB frame size must be 512 bytes"); idata->ic.opcode = opcode; idata->ic.flags = MMC_RSP_R1 | MMC_CMD_ADTC; idata->ic.write_flag = write_flag; - idata->ic.blksz = sizeof(struct rpmb_frame); + idata->ic.blksz = RPMB_FRAME_SIZE; idata->ic.blocks = buf_bytes / idata->ic.blksz; idata->buf = buf; idata->buf_bytes = buf_bytes; @@ -2893,32 +2891,28 @@ static int mmc_route_rpmb_frames(struct device *dev, u8 *req, if (IS_ERR(md->queue.card)) return PTR_ERR(md->queue.card); - if (req_len < sizeof(*frm)) + if (req_len < RPMB_FRAME_SIZE) return -EINVAL; req_type = be16_to_cpu(frm->req_resp); switch (req_type) { case RPMB_PROGRAM_KEY: - if (req_len != sizeof(struct rpmb_frame) || - resp_len != sizeof(struct rpmb_frame)) + if (CHECK_SIZE_NEQ(req_len) || CHECK_SIZE_NEQ(resp_len)) return -EINVAL; write = true; break; case RPMB_GET_WRITE_COUNTER: - if (req_len != sizeof(struct rpmb_frame) || - resp_len != sizeof(struct rpmb_frame)) + if (CHECK_SIZE_NEQ(req_len) || CHECK_SIZE_NEQ(resp_len)) return -EINVAL; write = false; break; case RPMB_WRITE_DATA: - if (req_len % sizeof(struct rpmb_frame) || - resp_len != sizeof(struct rpmb_frame)) + if (!CHECK_SIZE_ALIGNED(req_len) || CHECK_SIZE_NEQ(resp_len)) return -EINVAL; write = true; break; case RPMB_READ_DATA: - if (req_len != sizeof(struct rpmb_frame) || - resp_len % sizeof(struct rpmb_frame)) + if (CHECK_SIZE_NEQ(req_len) || !CHECK_SIZE_ALIGNED(resp_len)) return -EINVAL; write = false; break; @@ -2926,25 +2920,23 @@ static int mmc_route_rpmb_frames(struct device *dev, u8 *req, return -EINVAL; } - if (write) - cmd_count = 3; - else - cmd_count = 2; + /* Write operations require 3 commands, read operations require 2 */ + cmd_count = write ? 3 : 2; idata = alloc_idata(rpmb, cmd_count); if (!idata) return -ENOMEM; if (write) { - struct rpmb_frame *frm = (struct rpmb_frame *)resp; + struct rpmb_frame *resp_frm = (struct rpmb_frame *)resp; /* Send write request frame(s) */ set_idata(idata[0], MMC_WRITE_MULTIPLE_BLOCK, 1 | MMC_CMD23_ARG_REL_WR, req, req_len); /* Send result request frame */ - memset(frm, 0, sizeof(*frm)); - frm->req_resp = cpu_to_be16(RPMB_RESULT_READ); + memset(resp_frm, 0, RPMB_FRAME_SIZE); + resp_frm->req_resp = cpu_to_be16(RPMB_RESULT_READ); set_idata(idata[1], MMC_WRITE_MULTIPLE_BLOCK, 1, resp, resp_len); |