| Message ID | 20230511133017.6307-5-quic_mdalam@quicinc.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | mtd: rawnand: qcom: Implement exec_op() | expand |
On 5/22/2023 7:23 PM, Miquel Raynal wrote: > > quic_mdalam@quicinc.com wrote on Thu, 11 May 2023 19:00:16 +0530: > >> This change will add exec_ops support for READ, WRITE, and ERASE >> command. >> >> Co-developed-by: Sricharan Ramabadhran <quic_srichara@quicinc.com> >> Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com> >> Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com> >> --- >> Change in [v2] >> >> * Missed to post Cover-letter, so posting v2 patch with cover-letter >> >> drivers/mtd/nand/raw/qcom_nandc.c | 52 +++++++++++++++++++++++++++++-- >> 1 file changed, 49 insertions(+), 3 deletions(-) >> >> diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c >> index 8717d5086f80..14ab21a4771b 100644 >> --- a/drivers/mtd/nand/raw/qcom_nandc.c >> +++ b/drivers/mtd/nand/raw/qcom_nandc.c >> @@ -1765,7 +1765,8 @@ qcom_nandc_read_cw_raw(struct mtd_info *mtd, struct nand_chip *chip, >> int ret, reg_off = FLASH_BUF_ACC, read_loc = 0; >> int raw_cw = cw; >> >> - nand_read_page_op(chip, page, 0, NULL, 0); >> + chip->cont_read.ongoing = false; > > This should be checked once for all by the core at startup, that's when > you can tell the core continuous read is not supported by the > controller. Sure, Will fix this in next patch V3. > >> + nand_read_page_op(chip, page, 0, data_buf, mtd->writesize); >> host->use_ecc = false; >> >> if (nandc->props->qpic_v2) >> @@ -2182,14 +2183,24 @@ static void qcom_nandc_codeword_fixup(struct qcom_nand_host *host, int page) >> static int qcom_nandc_read_page(struct nand_chip *chip, uint8_t *buf, >> int oob_required, int page) >> { >> + struct mtd_info *mtd = nand_to_mtd(chip); >> struct qcom_nand_host *host = to_qcom_nand_host(chip); >> struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); >> + struct nand_ecc_ctrl *ecc = &chip->ecc; >> u8 *data_buf, *oob_buf = NULL; >> >> if (host->nr_boot_partitions) >> qcom_nandc_codeword_fixup(host, page); >> >> - nand_read_page_op(chip, page, 0, NULL, 0); >> + chip->cont_read.ongoing = false; >> + nand_read_page_op(chip, page, 0, buf, mtd->writesize); >> + nandc->buf_count = 0; >> + nandc->buf_start = 0; >> + host->use_ecc = true; >> + clear_read_regs(nandc); >> + set_address(host, 0, page); >> + update_rw_regs(host, ecc->steps, true, 0); >> + >> data_buf = buf; >> oob_buf = oob_required ? chip->oob_poi : NULL; >> >> @@ -2259,6 +2270,10 @@ static int qcom_nandc_write_page(struct nand_chip *chip, const uint8_t *buf, >> >> nand_prog_page_begin_op(chip, page, 0, NULL, 0); >> >> + set_address(host, 0, page); >> + nandc->buf_count = 0; >> + nandc->buf_start = 0; >> + >> clear_read_regs(nandc); >> clear_bam_transaction(nandc); >> >> @@ -3081,7 +3096,38 @@ static int qcom_read_status_exec(struct nand_chip *chip, >> >> static int qcom_erase_cmd_type_exec(struct nand_chip *chip, const struct nand_subop *subop) >> { >> - return 0; >> + struct qcom_nand_host *host = to_qcom_nand_host(chip); >> + struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); >> + struct qcom_op q_op; >> + int ret = 0; >> + >> + qcom_parse_instructions(chip, subop, &q_op); >> + >> + q_op.cmd_reg |= PAGE_ACC | LAST_PAGE; >> + >> + pre_command(host, NAND_CMD_ERASE1); > > The instruction is up to the caller, not to the driver. If no other > instruction rather than NAND_CMD_ERASE1 can be used with this pattern, > then it should be properly described (see the Arasan controller, > anfc_check_op()). > Thanks, will fix this in next patch V3. >> + >> + nandc_set_reg(chip, NAND_FLASH_CMD, q_op.cmd_reg); >> + nandc_set_reg(chip, NAND_ADDR0, q_op.addr1_reg); >> + nandc_set_reg(chip, NAND_ADDR1, q_op.addr2_reg); >> + nandc_set_reg(chip, NAND_DEV0_CFG0, >> + host->cfg0_raw & ~(7 << CW_PER_PAGE)); >> + nandc_set_reg(chip, NAND_DEV0_CFG1, host->cfg1_raw); >> + nandc_set_reg(chip, NAND_EXEC_CMD, 1); >> + >> + write_reg_dma(nandc, NAND_FLASH_CMD, 3, NAND_BAM_NEXT_SGL); >> + write_reg_dma(nandc, NAND_DEV0_CFG0, 2, NAND_BAM_NEXT_SGL); >> + write_reg_dma(nandc, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); >> + >> + ret = submit_descs(nandc); >> + if (ret) >> + dev_err(nandc->dev, "failure in sbumitting reset descriptor\n"); >> + >> + free_descs(nandc); >> + >> + ret = qcom_wait_rdy_poll(chip, q_op.rdy_timeout_ms); >> + >> + return ret; >> } >> >> static int qcom_param_page_type_exec(struct nand_chip *chip, const struct nand_subop *subop) > > > Thanks, > Miquèl
diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c index 8717d5086f80..14ab21a4771b 100644 --- a/drivers/mtd/nand/raw/qcom_nandc.c +++ b/drivers/mtd/nand/raw/qcom_nandc.c @@ -1765,7 +1765,8 @@ qcom_nandc_read_cw_raw(struct mtd_info *mtd, struct nand_chip *chip, int ret, reg_off = FLASH_BUF_ACC, read_loc = 0; int raw_cw = cw; - nand_read_page_op(chip, page, 0, NULL, 0); + chip->cont_read.ongoing = false; + nand_read_page_op(chip, page, 0, data_buf, mtd->writesize); host->use_ecc = false; if (nandc->props->qpic_v2) @@ -2182,14 +2183,24 @@ static void qcom_nandc_codeword_fixup(struct qcom_nand_host *host, int page) static int qcom_nandc_read_page(struct nand_chip *chip, uint8_t *buf, int oob_required, int page) { + struct mtd_info *mtd = nand_to_mtd(chip); struct qcom_nand_host *host = to_qcom_nand_host(chip); struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); + struct nand_ecc_ctrl *ecc = &chip->ecc; u8 *data_buf, *oob_buf = NULL; if (host->nr_boot_partitions) qcom_nandc_codeword_fixup(host, page); - nand_read_page_op(chip, page, 0, NULL, 0); + chip->cont_read.ongoing = false; + nand_read_page_op(chip, page, 0, buf, mtd->writesize); + nandc->buf_count = 0; + nandc->buf_start = 0; + host->use_ecc = true; + clear_read_regs(nandc); + set_address(host, 0, page); + update_rw_regs(host, ecc->steps, true, 0); + data_buf = buf; oob_buf = oob_required ? chip->oob_poi : NULL; @@ -2259,6 +2270,10 @@ static int qcom_nandc_write_page(struct nand_chip *chip, const uint8_t *buf, nand_prog_page_begin_op(chip, page, 0, NULL, 0); + set_address(host, 0, page); + nandc->buf_count = 0; + nandc->buf_start = 0; + clear_read_regs(nandc); clear_bam_transaction(nandc); @@ -3081,7 +3096,38 @@ static int qcom_read_status_exec(struct nand_chip *chip, static int qcom_erase_cmd_type_exec(struct nand_chip *chip, const struct nand_subop *subop) { - return 0; + struct qcom_nand_host *host = to_qcom_nand_host(chip); + struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); + struct qcom_op q_op; + int ret = 0; + + qcom_parse_instructions(chip, subop, &q_op); + + q_op.cmd_reg |= PAGE_ACC | LAST_PAGE; + + pre_command(host, NAND_CMD_ERASE1); + + nandc_set_reg(chip, NAND_FLASH_CMD, q_op.cmd_reg); + nandc_set_reg(chip, NAND_ADDR0, q_op.addr1_reg); + nandc_set_reg(chip, NAND_ADDR1, q_op.addr2_reg); + nandc_set_reg(chip, NAND_DEV0_CFG0, + host->cfg0_raw & ~(7 << CW_PER_PAGE)); + nandc_set_reg(chip, NAND_DEV0_CFG1, host->cfg1_raw); + nandc_set_reg(chip, NAND_EXEC_CMD, 1); + + write_reg_dma(nandc, NAND_FLASH_CMD, 3, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, NAND_DEV0_CFG0, 2, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); + + ret = submit_descs(nandc); + if (ret) + dev_err(nandc->dev, "failure in sbumitting reset descriptor\n"); + + free_descs(nandc); + + ret = qcom_wait_rdy_poll(chip, q_op.rdy_timeout_ms); + + return ret; } static int qcom_param_page_type_exec(struct nand_chip *chip, const struct nand_subop *subop)