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Wed, 8 May 2024 08:36:41 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTPS id 3xwe3kwch7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 08 May 2024 08:36:41 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 4488aej5001175; Wed, 8 May 2024 08:36:41 GMT Received: from hu-devc-blr-u22-a.qualcomm.com (hu-mdalam-blr.qualcomm.com [10.131.36.157]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTPS id 4488aemZ001170 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 08 May 2024 08:36:40 +0000 Received: by hu-devc-blr-u22-a.qualcomm.com (Postfix, from userid 466583) id 10092415E5; Wed, 8 May 2024 14:06:40 +0530 (+0530) From: Md Sadre Alam To: broonie@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, manivannan.sadhasivam@linaro.org, linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org Cc: quic_srichara@quicinc.com, quic_varada@quicinc.com, quic_mdalam@quicinc.com Subject: [PATCH v5 2/7] mtd: rawnand: qcom: cleanup qcom_nandc driver Date: Wed, 8 May 2024 14:06:32 +0530 Message-Id: <20240508083637.3744003-3-quic_mdalam@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240508083637.3744003-1-quic_mdalam@quicinc.com> References: <20240508083637.3744003-1-quic_mdalam@quicinc.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: _D-UNgILkHHPFNeML8dgWK1OEIJBo9az X-Proofpoint-ORIG-GUID: _D-UNgILkHHPFNeML8dgWK1OEIJBo9az X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.650,FMLib:17.11.176.26 definitions=2024-05-08_04,2024-05-08_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 lowpriorityscore=0 phishscore=0 suspectscore=0 clxscore=1011 bulkscore=0 mlxlogscore=999 adultscore=0 spamscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405010000 definitions=main-2405080060 cleanup qcom_nandc driver as below - Remove register value indirection api - Remove set_reg() api - Convert read_loc_first & read_loc_last macro to function - Renamed multiple variables Signed-off-by: Md Sadre Alam --- Change in [v5] * Cleand up raw nand driver. * Removed register value indirection * Removed set_reg() api. Change in [v4] * This patch was not included in [v4] Change in [v3] * This patch was not included in [v3] Change in [v2] * This patch was not included in [v2] Change in [v1] * This patch was not included in [v1] drivers/mtd/nand/raw/qcom_nandc.c | 451 +++++++++++++----------------- 1 file changed, 198 insertions(+), 253 deletions(-) diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c index b8cff9240b28..6c886a72f5e4 100644 --- a/drivers/mtd/nand/raw/qcom_nandc.c +++ b/drivers/mtd/nand/raw/qcom_nandc.c @@ -189,17 +189,6 @@ #define ECC_BCH_4BIT BIT(2) #define ECC_BCH_8BIT BIT(3) -#define nandc_set_read_loc_first(chip, reg, cw_offset, read_size, is_last_read_loc) \ -nandc_set_reg(chip, reg, \ - ((cw_offset) << READ_LOCATION_OFFSET) | \ - ((read_size) << READ_LOCATION_SIZE) | \ - ((is_last_read_loc) << READ_LOCATION_LAST)) - -#define nandc_set_read_loc_last(chip, reg, cw_offset, read_size, is_last_read_loc) \ -nandc_set_reg(chip, reg, \ - ((cw_offset) << READ_LOCATION_OFFSET) | \ - ((read_size) << READ_LOCATION_SIZE) | \ - ((is_last_read_loc) << READ_LOCATION_LAST)) /* * Returns the actual register address for all NAND_DEV_ registers * (i.e. NAND_DEV_CMD0, NAND_DEV_CMD1, NAND_DEV_CMD2 and NAND_DEV_CMD_VLD) @@ -257,8 +246,6 @@ nandc_set_reg(chip, reg, \ * @tx_sgl_start - start index in data sgl for tx. * @rx_sgl_pos - current index in data sgl for rx. * @rx_sgl_start - start index in data sgl for rx. - * @wait_second_completion - wait for second DMA desc completion before making - * the NAND transfer completion. */ struct bam_transaction { struct bam_cmd_element *bam_ce; @@ -275,7 +262,6 @@ struct bam_transaction { u32 tx_sgl_start; u32 rx_sgl_pos; u32 rx_sgl_start; - bool wait_second_completion; }; /* @@ -549,17 +535,17 @@ struct qcom_nand_host { * among different NAND controllers. * @ecc_modes - ecc mode for NAND * @dev_cmd_reg_start - NAND_DEV_CMD_* registers starting offset - * @is_bam - whether NAND controller is using BAM - * @is_qpic - whether NAND CTRL is part of qpic IP - * @qpic_v2 - flag to indicate QPIC IP version 2 + * @supports_bam - whether NAND controller is using BAM + * @nandc_part_of_qpic - whether NAND controller is part of qpic IP + * @qpic_version2 - flag to indicate QPIC IP version 2 * @use_codeword_fixup - whether NAND has different layout for boot partitions */ struct qcom_nandc_props { u32 ecc_modes; u32 dev_cmd_reg_start; - bool is_bam; - bool is_qpic; - bool qpic_v2; + bool supports_bam; + bool nandc_part_of_qpic; + bool qpic_version2; bool use_codeword_fixup; }; @@ -613,19 +599,11 @@ static void clear_bam_transaction(struct qcom_nand_controller *nandc) { struct bam_transaction *bam_txn = nandc->bam_txn; - if (!nandc->props->is_bam) + if (!nandc->props->supports_bam) return; - bam_txn->bam_ce_pos = 0; - bam_txn->bam_ce_start = 0; - bam_txn->cmd_sgl_pos = 0; - bam_txn->cmd_sgl_start = 0; - bam_txn->tx_sgl_pos = 0; - bam_txn->tx_sgl_start = 0; - bam_txn->rx_sgl_pos = 0; - bam_txn->rx_sgl_start = 0; + memset(&bam_txn->bam_ce_pos, 0, sizeof(u32) * 8); bam_txn->last_data_desc = NULL; - bam_txn->wait_second_completion = false; sg_init_table(bam_txn->cmd_sgl, nandc->max_cwperpage * QPIC_PER_CW_CMD_SGL); @@ -640,17 +618,7 @@ static void qpic_bam_dma_done(void *data) { struct bam_transaction *bam_txn = data; - /* - * In case of data transfer with NAND, 2 callbacks will be generated. - * One for command channel and another one for data channel. - * If current transaction has data descriptors - * (i.e. wait_second_completion is true), then set this to false - * and wait for second DMA descriptor completion. - */ - if (bam_txn->wait_second_completion) - bam_txn->wait_second_completion = false; - else - complete(&bam_txn->txn_done); + complete(&bam_txn->txn_done); } static inline struct qcom_nand_host *to_qcom_nand_host(struct nand_chip *chip) @@ -676,10 +644,9 @@ static inline void nandc_write(struct qcom_nand_controller *nandc, int offset, iowrite32(val, nandc->base + offset); } -static inline void nandc_read_buffer_sync(struct qcom_nand_controller *nandc, - bool is_cpu) +static inline void nandc_dev_to_mem(struct qcom_nand_controller *nandc, bool is_cpu) { - if (!nandc->props->is_bam) + if (!nandc->props->supports_bam) return; if (is_cpu) @@ -694,77 +661,67 @@ static inline void nandc_read_buffer_sync(struct qcom_nand_controller *nandc, DMA_FROM_DEVICE); } -static __le32 *offset_to_nandc_reg(struct nandc_regs *regs, int offset) -{ - switch (offset) { - case NAND_FLASH_CMD: - return ®s->cmd; - case NAND_ADDR0: - return ®s->addr0; - case NAND_ADDR1: - return ®s->addr1; - case NAND_FLASH_CHIP_SELECT: - return ®s->chip_sel; - case NAND_EXEC_CMD: - return ®s->exec; - case NAND_FLASH_STATUS: - return ®s->clrflashstatus; - case NAND_DEV0_CFG0: - return ®s->cfg0; - case NAND_DEV0_CFG1: - return ®s->cfg1; - case NAND_DEV0_ECC_CFG: - return ®s->ecc_bch_cfg; - case NAND_READ_STATUS: - return ®s->clrreadstatus; - case NAND_DEV_CMD1: - return ®s->cmd1; - case NAND_DEV_CMD1_RESTORE: - return ®s->orig_cmd1; - case NAND_DEV_CMD_VLD: - return ®s->vld; - case NAND_DEV_CMD_VLD_RESTORE: - return ®s->orig_vld; - case NAND_EBI2_ECC_BUF_CFG: - return ®s->ecc_buf_cfg; - case NAND_READ_LOCATION_0: - return ®s->read_location0; - case NAND_READ_LOCATION_1: - return ®s->read_location1; - case NAND_READ_LOCATION_2: - return ®s->read_location2; - case NAND_READ_LOCATION_3: - return ®s->read_location3; - case NAND_READ_LOCATION_LAST_CW_0: - return ®s->read_location_last0; - case NAND_READ_LOCATION_LAST_CW_1: - return ®s->read_location_last1; - case NAND_READ_LOCATION_LAST_CW_2: - return ®s->read_location_last2; - case NAND_READ_LOCATION_LAST_CW_3: - return ®s->read_location_last3; - default: - return NULL; - } +/* Helper to check the code word, whether it is last cw or not */ +static bool qcom_nandc_is_last_cw(struct nand_ecc_ctrl *ecc, int cw) +{ + return cw == (ecc->steps - 1); } -static void nandc_set_reg(struct nand_chip *chip, int offset, - u32 val) +/** + * nandc_set_read_loc_first() - to set read location first register + * @reg_base: location register base + * @cw_offset: code word offset + * @read_size: code word read length + * @is_last_read_loc: is this the last read location + * + * This function will set location register value + */ +static void nandc_set_read_loc_first(struct nand_chip *chip, + int reg_base, int cw_offset, + int read_size, int is_last_read_loc) +{ + struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); + int val = (((cw_offset) << READ_LOCATION_OFFSET) | + ((read_size) << READ_LOCATION_SIZE) | + ((is_last_read_loc) << READ_LOCATION_LAST)); + + if (reg_base == NAND_READ_LOCATION_0) + nandc->regs->read_location0 = val; + else if (reg_base == NAND_READ_LOCATION_1) + nandc->regs->read_location1 = val; + else if (reg_base == NAND_READ_LOCATION_2) + nandc->regs->read_location2 = val; + else if (reg_base == NAND_READ_LOCATION_3) + nandc->regs->read_location3 = val; +} + +/** + * nandc_set_read_loc_last - to set read location last register + * @reg_base: location register base + * @cw_offset: code word offset + * @read_size: code word read length + * @is_last_read_loc: is this the last read location + * + * This function will set location last register value + */ +static void nandc_set_read_loc_last(struct nand_chip *chip, + int reg_base, int cw_offset, + int read_size, int is_last_read_loc) { struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); - struct nandc_regs *regs = nandc->regs; - __le32 *reg; - - reg = offset_to_nandc_reg(regs, offset); - if (reg) - *reg = cpu_to_le32(val); -} + int val = (((cw_offset) << READ_LOCATION_OFFSET) | + ((read_size) << READ_LOCATION_SIZE) | + ((is_last_read_loc) << READ_LOCATION_LAST)); -/* Helper to check the code word, whether it is last cw or not */ -static bool qcom_nandc_is_last_cw(struct nand_ecc_ctrl *ecc, int cw) -{ - return cw == (ecc->steps - 1); + if (reg_base == NAND_READ_LOCATION_LAST_CW_0) + nandc->regs->read_location_last0 = val; + else if (reg_base == NAND_READ_LOCATION_LAST_CW_1) + nandc->regs->read_location_last1 = val; + else if (reg_base == NAND_READ_LOCATION_LAST_CW_2) + nandc->regs->read_location_last2 = val; + else if (reg_base == NAND_READ_LOCATION_LAST_CW_3) + nandc->regs->read_location_last3 = val; } /* helper to configure location register values */ @@ -775,12 +732,12 @@ static void nandc_set_read_loc(struct nand_chip *chip, int cw, int reg, struct nand_ecc_ctrl *ecc = &chip->ecc; int reg_base = NAND_READ_LOCATION_0; - if (nandc->props->qpic_v2 && qcom_nandc_is_last_cw(ecc, cw)) + if (nandc->props->qpic_version2 && qcom_nandc_is_last_cw(ecc, cw)) reg_base = NAND_READ_LOCATION_LAST_CW_0; reg_base += reg * 4; - if (nandc->props->qpic_v2 && qcom_nandc_is_last_cw(ecc, cw)) + if (nandc->props->qpic_version2 && qcom_nandc_is_last_cw(ecc, cw)) return nandc_set_read_loc_last(chip, reg_base, cw_offset, read_size, is_last_read_loc); else @@ -792,12 +749,13 @@ static void nandc_set_read_loc(struct nand_chip *chip, int cw, int reg, static void set_address(struct qcom_nand_host *host, u16 column, int page) { struct nand_chip *chip = &host->chip; + struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); if (chip->options & NAND_BUSWIDTH_16) column >>= 1; - nandc_set_reg(chip, NAND_ADDR0, page << 16 | column); - nandc_set_reg(chip, NAND_ADDR1, page >> 16 & 0xff); + nandc->regs->addr0 = page << 16 | column; + nandc->regs->addr1 = page >> 16 & 0xff; } /* @@ -837,15 +795,17 @@ static void update_rw_regs(struct qcom_nand_host *host, int num_cw, bool read, i ecc_bch_cfg = 1 << ECC_CFG_ECC_DISABLE; } - nandc_set_reg(chip, NAND_FLASH_CMD, cmd); - nandc_set_reg(chip, NAND_DEV0_CFG0, cfg0); - nandc_set_reg(chip, NAND_DEV0_CFG1, cfg1); - nandc_set_reg(chip, NAND_DEV0_ECC_CFG, ecc_bch_cfg); - if (!nandc->props->qpic_v2) - nandc_set_reg(chip, NAND_EBI2_ECC_BUF_CFG, host->ecc_buf_cfg); - nandc_set_reg(chip, NAND_FLASH_STATUS, host->clrflashstatus); - nandc_set_reg(chip, NAND_READ_STATUS, host->clrreadstatus); - nandc_set_reg(chip, NAND_EXEC_CMD, 1); + nandc->regs->cmd = cmd; + nandc->regs->cfg0 = cfg0; + nandc->regs->cfg1 = cfg1; + nandc->regs->ecc_bch_cfg = ecc_bch_cfg; + + if (!nandc->props->qpic_version2) + nandc->regs->ecc_buf_cfg = host->ecc_buf_cfg; + + nandc->regs->clrflashstatus = host->clrflashstatus; + nandc->regs->clrreadstatus = host->clrreadstatus; + nandc->regs->exec = 1; if (read) nandc_set_read_loc(chip, cw, 0, 0, host->use_ecc ? @@ -1121,7 +1081,7 @@ static int read_reg_dma(struct qcom_nand_controller *nandc, int first, if (first == NAND_DEV_CMD_VLD || first == NAND_DEV_CMD1) first = dev_cmd_reg_addr(nandc, first); - if (nandc->props->is_bam) + if (nandc->props->supports_bam) return prep_bam_dma_desc_cmd(nandc, true, first, vaddr, num_regs, flags); @@ -1136,25 +1096,16 @@ static int read_reg_dma(struct qcom_nand_controller *nandc, int first, * write_reg_dma: prepares a descriptor to write a given number of * contiguous registers * + * @vaddr: contnigeous memory from where register value will + * be written * @first: offset of the first register in the contiguous block * @num_regs: number of registers to write * @flags: flags to control DMA descriptor preparation */ -static int write_reg_dma(struct qcom_nand_controller *nandc, int first, - int num_regs, unsigned int flags) +static int write_reg_dma(struct qcom_nand_controller *nandc, __le32 *vaddr, + int first, int num_regs, unsigned int flags) { bool flow_control = false; - struct nandc_regs *regs = nandc->regs; - void *vaddr; - - vaddr = offset_to_nandc_reg(regs, first); - - if (first == NAND_ERASED_CW_DETECT_CFG) { - if (flags & NAND_ERASED_CW_SET) - vaddr = ®s->erased_cw_detect_cfg_set; - else - vaddr = ®s->erased_cw_detect_cfg_clr; - } if (first == NAND_EXEC_CMD) flags |= NAND_BAM_NWD; @@ -1165,7 +1116,7 @@ static int write_reg_dma(struct qcom_nand_controller *nandc, int first, if (first == NAND_DEV_CMD_VLD_RESTORE || first == NAND_DEV_CMD_VLD) first = dev_cmd_reg_addr(nandc, NAND_DEV_CMD_VLD); - if (nandc->props->is_bam) + if (nandc->props->supports_bam) return prep_bam_dma_desc_cmd(nandc, false, first, vaddr, num_regs, flags); @@ -1188,7 +1139,7 @@ static int write_reg_dma(struct qcom_nand_controller *nandc, int first, static int read_data_dma(struct qcom_nand_controller *nandc, int reg_off, const u8 *vaddr, int size, unsigned int flags) { - if (nandc->props->is_bam) + if (nandc->props->supports_bam) return prep_bam_dma_desc_data(nandc, true, vaddr, size, flags); return prep_adm_dma_desc(nandc, true, reg_off, vaddr, size, false); @@ -1206,7 +1157,7 @@ static int read_data_dma(struct qcom_nand_controller *nandc, int reg_off, static int write_data_dma(struct qcom_nand_controller *nandc, int reg_off, const u8 *vaddr, int size, unsigned int flags) { - if (nandc->props->is_bam) + if (nandc->props->supports_bam) return prep_bam_dma_desc_data(nandc, false, vaddr, size, flags); return prep_adm_dma_desc(nandc, false, reg_off, vaddr, size, false); @@ -1220,13 +1171,14 @@ static void config_nand_page_read(struct nand_chip *chip) { struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); - write_reg_dma(nandc, NAND_ADDR0, 2, 0); - write_reg_dma(nandc, NAND_DEV0_CFG0, 3, 0); - if (!nandc->props->qpic_v2) - write_reg_dma(nandc, NAND_EBI2_ECC_BUF_CFG, 1, 0); - write_reg_dma(nandc, NAND_ERASED_CW_DETECT_CFG, 1, 0); - write_reg_dma(nandc, NAND_ERASED_CW_DETECT_CFG, 1, - NAND_ERASED_CW_SET | NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->addr0, NAND_ADDR0, 2, 0); + write_reg_dma(nandc, &nandc->regs->cfg0, NAND_DEV0_CFG0, 3, 0); + if (!nandc->props->qpic_version2) + write_reg_dma(nandc, &nandc->regs->ecc_buf_cfg, NAND_EBI2_ECC_BUF_CFG, 1, 0); + write_reg_dma(nandc, &nandc->regs->erased_cw_detect_cfg_clr, + NAND_ERASED_CW_DETECT_CFG, 1, 0); + write_reg_dma(nandc, &nandc->regs->erased_cw_detect_cfg_set, + NAND_ERASED_CW_DETECT_CFG, 1, NAND_ERASED_CW_SET | NAND_BAM_NEXT_SGL); } /* @@ -1239,16 +1191,16 @@ config_nand_cw_read(struct nand_chip *chip, bool use_ecc, int cw) struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); struct nand_ecc_ctrl *ecc = &chip->ecc; - int reg = NAND_READ_LOCATION_0; + __le32 *reg = &nandc->regs->read_location0; - if (nandc->props->qpic_v2 && qcom_nandc_is_last_cw(ecc, cw)) - reg = NAND_READ_LOCATION_LAST_CW_0; + if (nandc->props->qpic_version2 && qcom_nandc_is_last_cw(ecc, cw)) + reg = &nandc->regs->read_location_last0; - if (nandc->props->is_bam) - write_reg_dma(nandc, reg, 4, NAND_BAM_NEXT_SGL); + if (nandc->props->supports_bam) + write_reg_dma(nandc, reg, NAND_READ_LOCATION_0, 4, NAND_BAM_NEXT_SGL); - write_reg_dma(nandc, NAND_FLASH_CMD, 1, NAND_BAM_NEXT_SGL); - write_reg_dma(nandc, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->cmd, NAND_FLASH_CMD, 1, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->exec, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); if (use_ecc) { read_reg_dma(nandc, NAND_FLASH_STATUS, 2, 0); @@ -1279,10 +1231,10 @@ static void config_nand_page_write(struct nand_chip *chip) { struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); - write_reg_dma(nandc, NAND_ADDR0, 2, 0); - write_reg_dma(nandc, NAND_DEV0_CFG0, 3, 0); - if (!nandc->props->qpic_v2) - write_reg_dma(nandc, NAND_EBI2_ECC_BUF_CFG, 1, + write_reg_dma(nandc, &nandc->regs->addr0, NAND_ADDR0, 2, 0); + write_reg_dma(nandc, &nandc->regs->cfg0, NAND_DEV0_CFG0, 3, 0); + if (!nandc->props->qpic_version2) + write_reg_dma(nandc, &nandc->regs->ecc_buf_cfg, NAND_EBI2_ECC_BUF_CFG, 1, NAND_BAM_NEXT_SGL); } @@ -1294,13 +1246,13 @@ static void config_nand_cw_write(struct nand_chip *chip) { struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); - write_reg_dma(nandc, NAND_FLASH_CMD, 1, NAND_BAM_NEXT_SGL); - write_reg_dma(nandc, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->cmd, NAND_FLASH_CMD, 1, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->exec, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); read_reg_dma(nandc, NAND_FLASH_STATUS, 1, NAND_BAM_NEXT_SGL); - write_reg_dma(nandc, NAND_FLASH_STATUS, 1, 0); - write_reg_dma(nandc, NAND_READ_STATUS, 1, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->clrflashstatus, NAND_FLASH_STATUS, 1, 0); + write_reg_dma(nandc, &nandc->regs->clrreadstatus, NAND_READ_STATUS, 1, NAND_BAM_NEXT_SGL); } /* helpers to submit/free our list of dma descriptors */ @@ -1311,7 +1263,7 @@ static int submit_descs(struct qcom_nand_controller *nandc) struct bam_transaction *bam_txn = nandc->bam_txn; int ret = 0; - if (nandc->props->is_bam) { + if (nandc->props->supports_bam) { if (bam_txn->rx_sgl_pos > bam_txn->rx_sgl_start) { ret = prepare_bam_async_desc(nandc, nandc->rx_chan, 0); if (ret) @@ -1336,14 +1288,9 @@ static int submit_descs(struct qcom_nand_controller *nandc) list_for_each_entry(desc, &nandc->desc_list, node) cookie = dmaengine_submit(desc->dma_desc); - if (nandc->props->is_bam) { + if (nandc->props->supports_bam) { bam_txn->last_cmd_desc->callback = qpic_bam_dma_done; bam_txn->last_cmd_desc->callback_param = bam_txn; - if (bam_txn->last_data_desc) { - bam_txn->last_data_desc->callback = qpic_bam_dma_done; - bam_txn->last_data_desc->callback_param = bam_txn; - bam_txn->wait_second_completion = true; - } dma_async_issue_pending(nandc->tx_chan); dma_async_issue_pending(nandc->rx_chan); @@ -1365,7 +1312,7 @@ static int submit_descs(struct qcom_nand_controller *nandc) list_for_each_entry_safe(desc, n, &nandc->desc_list, node) { list_del(&desc->node); - if (nandc->props->is_bam) + if (nandc->props->supports_bam) dma_unmap_sg(nandc->dev, desc->bam_sgl, desc->sgl_cnt, desc->dir); else @@ -1382,7 +1329,7 @@ static int submit_descs(struct qcom_nand_controller *nandc) static void clear_read_regs(struct qcom_nand_controller *nandc) { nandc->reg_read_pos = 0; - nandc_read_buffer_sync(nandc, false); + nandc_dev_to_mem(nandc, false); } /* @@ -1446,7 +1393,7 @@ static int check_flash_errors(struct qcom_nand_host *host, int cw_cnt) struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); int i; - nandc_read_buffer_sync(nandc, true); + nandc_dev_to_mem(nandc, true); for (i = 0; i < cw_cnt; i++) { u32 flash = le32_to_cpu(nandc->reg_read_buf[i]); @@ -1476,7 +1423,7 @@ qcom_nandc_read_cw_raw(struct mtd_info *mtd, struct nand_chip *chip, clear_read_regs(nandc); host->use_ecc = false; - if (nandc->props->qpic_v2) + if (nandc->props->qpic_version2) raw_cw = ecc->steps - 1; clear_bam_transaction(nandc); @@ -1497,7 +1444,7 @@ qcom_nandc_read_cw_raw(struct mtd_info *mtd, struct nand_chip *chip, oob_size2 = host->ecc_bytes_hw + host->spare_bytes; } - if (nandc->props->is_bam) { + if (nandc->props->supports_bam) { nandc_set_read_loc(chip, cw, 0, read_loc, data_size1, 0); read_loc += data_size1; @@ -1621,7 +1568,7 @@ static int parse_read_errors(struct qcom_nand_host *host, u8 *data_buf, u8 *data_buf_start = data_buf, *oob_buf_start = oob_buf; buf = (struct read_stats *)nandc->reg_read_buf; - nandc_read_buffer_sync(nandc, true); + nandc_dev_to_mem(nandc, true); for (i = 0; i < ecc->steps; i++, buf++) { u32 flash, buffer, erased_cw; @@ -1734,7 +1681,7 @@ static int read_page_ecc(struct qcom_nand_host *host, u8 *data_buf, oob_size = host->ecc_bytes_hw + host->spare_bytes; } - if (nandc->props->is_bam) { + if (nandc->props->supports_bam) { if (data_buf && oob_buf) { nandc_set_read_loc(chip, i, 0, 0, data_size, 0); nandc_set_read_loc(chip, i, 1, data_size, @@ -2455,14 +2402,14 @@ static int qcom_nand_attach_chip(struct nand_chip *chip) mtd_set_ooblayout(mtd, &qcom_nand_ooblayout_ops); /* Free the initially allocated BAM transaction for reading the ONFI params */ - if (nandc->props->is_bam) + if (nandc->props->supports_bam) free_bam_transaction(nandc); nandc->max_cwperpage = max_t(unsigned int, nandc->max_cwperpage, cwperpage); /* Now allocate the BAM transaction based on updated max_cwperpage */ - if (nandc->props->is_bam) { + if (nandc->props->supports_bam) { nandc->bam_txn = alloc_bam_transaction(nandc); if (!nandc->bam_txn) { dev_err(nandc->dev, @@ -2522,7 +2469,7 @@ static int qcom_nand_attach_chip(struct nand_chip *chip) | ecc_mode << ECC_MODE | host->ecc_bytes_hw << ECC_PARITY_SIZE_BYTES_BCH; - if (!nandc->props->qpic_v2) + if (!nandc->props->qpic_version2) host->ecc_buf_cfg = 0x203 << NUM_STEPS; host->clrflashstatus = FS_READY_BSY_N; @@ -2556,7 +2503,7 @@ static int qcom_op_cmd_mapping(struct nand_chip *chip, u8 opcode, cmd = OP_FETCH_ID; break; case NAND_CMD_PARAM: - if (nandc->props->qpic_v2) + if (nandc->props->qpic_version2) cmd = OP_PAGE_READ_ONFI_READ; else cmd = OP_PAGE_READ; @@ -2663,7 +2610,7 @@ static int qcom_wait_rdy_poll(struct nand_chip *chip, unsigned int time_ms) unsigned long start = jiffies + msecs_to_jiffies(time_ms); u32 flash; - nandc_read_buffer_sync(nandc, true); + nandc_dev_to_mem(nandc, true); do { flash = le32_to_cpu(nandc->reg_read_buf[0]); @@ -2706,11 +2653,11 @@ static int qcom_read_status_exec(struct nand_chip *chip, clear_read_regs(nandc); clear_bam_transaction(nandc); - nandc_set_reg(chip, NAND_FLASH_CMD, q_op.cmd_reg); - nandc_set_reg(chip, NAND_EXEC_CMD, 1); + nandc->regs->cmd = q_op.cmd_reg; + nandc->regs->exec = 1; - write_reg_dma(nandc, NAND_FLASH_CMD, 1, NAND_BAM_NEXT_SGL); - write_reg_dma(nandc, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->cmd, NAND_FLASH_CMD, 1, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->exec, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); read_reg_dma(nandc, NAND_FLASH_STATUS, 1, NAND_BAM_NEXT_SGL); ret = submit_descs(nandc); @@ -2719,7 +2666,7 @@ static int qcom_read_status_exec(struct nand_chip *chip, goto err_out; } - nandc_read_buffer_sync(nandc, true); + nandc_dev_to_mem(nandc, true); for (i = 0; i < num_cw; i++) { flash_status = le32_to_cpu(nandc->reg_read_buf[i]); @@ -2763,16 +2710,14 @@ static int qcom_read_id_type_exec(struct nand_chip *chip, const struct nand_subo clear_read_regs(nandc); clear_bam_transaction(nandc); - 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_FLASH_CHIP_SELECT, - nandc->props->is_bam ? 0 : DM_EN); - - nandc_set_reg(chip, NAND_EXEC_CMD, 1); + nandc->regs->cmd = q_op.cmd_reg; + nandc->regs->addr0 = q_op.addr1_reg; + nandc->regs->addr1 = q_op.addr2_reg; + nandc->regs->chip_sel = nandc->props->supports_bam ? 0 : DM_EN; + nandc->regs->exec = 1; - write_reg_dma(nandc, NAND_FLASH_CMD, 4, NAND_BAM_NEXT_SGL); - write_reg_dma(nandc, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->cmd, NAND_FLASH_CMD, 4, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->exec, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); read_reg_dma(nandc, NAND_READ_ID, 1, NAND_BAM_NEXT_SGL); @@ -2786,7 +2731,7 @@ static int qcom_read_id_type_exec(struct nand_chip *chip, const struct nand_subo op_id = q_op.data_instr_idx; len = nand_subop_get_data_len(subop, op_id); - nandc_read_buffer_sync(nandc, true); + nandc_dev_to_mem(nandc, true); memcpy(instr->ctx.data.buf.in, nandc->reg_read_buf, len); err_out: @@ -2809,11 +2754,10 @@ static int qcom_misc_cmd_type_exec(struct nand_chip *chip, const struct nand_sub goto wait_rdy; } else if (q_op.cmd_reg == OP_BLOCK_ERASE) { q_op.cmd_reg |= PAGE_ACC | LAST_PAGE; - 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->regs->addr0 = q_op.addr1_reg; + nandc->regs->addr1 = q_op.addr2_reg; + nandc->regs->cfg0 = host->cfg0_raw & ~(7 << CW_PER_PAGE); + nandc->regs->cfg1 = host->cfg1_raw; instrs = 3; } else if (q_op.cmd_reg != OP_RESET_DEVICE) { return 0; @@ -2826,14 +2770,14 @@ static int qcom_misc_cmd_type_exec(struct nand_chip *chip, const struct nand_sub clear_read_regs(nandc); clear_bam_transaction(nandc); - nandc_set_reg(chip, NAND_FLASH_CMD, q_op.cmd_reg); - nandc_set_reg(chip, NAND_EXEC_CMD, 1); + nandc->regs->cmd = q_op.cmd_reg; + nandc->regs->exec = 1; - write_reg_dma(nandc, NAND_FLASH_CMD, instrs, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->cmd, NAND_FLASH_CMD, instrs, NAND_BAM_NEXT_SGL); if (q_op.cmd_reg == OP_BLOCK_ERASE) - write_reg_dma(nandc, NAND_DEV0_CFG0, 2, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->cfg0, NAND_DEV0_CFG0, 2, NAND_BAM_NEXT_SGL); - write_reg_dma(nandc, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); + write_reg_dma(nandc, &nandc->regs->exec, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL); read_reg_dma(nandc, NAND_FLASH_STATUS, 1, NAND_BAM_NEXT_SGL); ret = submit_descs(nandc); @@ -2872,38 +2816,38 @@ static int qcom_param_page_type_exec(struct nand_chip *chip, const struct nand_ clear_read_regs(nandc); clear_bam_transaction(nandc); - nandc_set_reg(chip, NAND_FLASH_CMD, q_op.cmd_reg); - - nandc_set_reg(chip, NAND_ADDR0, 0); - nandc_set_reg(chip, NAND_ADDR1, 0); - nandc_set_reg(chip, NAND_DEV0_CFG0, 0 << CW_PER_PAGE - | 512 << UD_SIZE_BYTES - | 5 << NUM_ADDR_CYCLES - | 0 << SPARE_SIZE_BYTES); - nandc_set_reg(chip, NAND_DEV0_CFG1, 7 << NAND_RECOVERY_CYCLES - | 0 << CS_ACTIVE_BSY - | 17 << BAD_BLOCK_BYTE_NUM - | 1 << BAD_BLOCK_IN_SPARE_AREA - | 2 << WR_RD_BSY_GAP - | 0 << WIDE_FLASH - | 1 << DEV0_CFG1_ECC_DISABLE); - if (!nandc->props->qpic_v2) - nandc_set_reg(chip, NAND_EBI2_ECC_BUF_CFG, 1 << ECC_CFG_ECC_DISABLE); + nandc->regs->cmd = q_op.cmd_reg; + nandc->regs->addr0 = 0; + nandc->regs->addr1 = 0; + + nandc->regs->cfg0 = 0 << CW_PER_PAGE + | 512 << UD_SIZE_BYTES + | 5 << NUM_ADDR_CYCLES + | 0 << SPARE_SIZE_BYTES; + + nandc->regs->cfg1 = 7 << NAND_RECOVERY_CYCLES + | 0 << CS_ACTIVE_BSY + | 17 << BAD_BLOCK_BYTE_NUM + | 1 << BAD_BLOCK_IN_SPARE_AREA + | 2 << WR_RD_BSY_GAP + | 0 << WIDE_FLASH + | 1 << DEV0_CFG1_ECC_DISABLE; + + if (!nandc->props->qpic_version2) + nandc->regs->ecc_buf_cfg = 1 << ECC_CFG_ECC_DISABLE; /* configure CMD1 and VLD for ONFI param probing in QPIC v1 */ - if (!nandc->props->qpic_v2) { - nandc_set_reg(chip, NAND_DEV_CMD_VLD, - (nandc->vld & ~READ_START_VLD)); - nandc_set_reg(chip, NAND_DEV_CMD1, - (nandc->cmd1 & ~(0xFF << READ_ADDR)) - | NAND_CMD_PARAM << READ_ADDR); + if (!nandc->props->qpic_version2) { + nandc->regs->vld = (nandc->vld & ~READ_START_VLD); + nandc->regs->cmd1 = (nandc->cmd1 & ~(0xFF << READ_ADDR)) + | NAND_CMD_PARAM << READ_ADDR; } - nandc_set_reg(chip, NAND_EXEC_CMD, 1); + nandc->regs->exec = 1; - if (!nandc->props->qpic_v2) { - nandc_set_reg(chip, NAND_DEV_CMD1_RESTORE, nandc->cmd1); - nandc_set_reg(chip, NAND_DEV_CMD_VLD_RESTORE, nandc->vld); + if (!nandc->props->qpic_version2) { + nandc->regs->orig_cmd1 = nandc->cmd1; + nandc->regs->orig_vld = nandc->vld; } instr = q_op.data_instr; @@ -2912,9 +2856,9 @@ static int qcom_param_page_type_exec(struct nand_chip *chip, const struct nand_ nandc_set_read_loc(chip, 0, 0, 0, len, 1); - if (!nandc->props->qpic_v2) { - write_reg_dma(nandc, NAND_DEV_CMD_VLD, 1, 0); - write_reg_dma(nandc, NAND_DEV_CMD1, 1, NAND_BAM_NEXT_SGL); + if (!nandc->props->qpic_version2) { + write_reg_dma(nandc, &nandc->regs->vld, NAND_DEV_CMD_VLD, 1, 0); + write_reg_dma(nandc, &nandc->regs->cmd1, NAND_DEV_CMD1, 1, NAND_BAM_NEXT_SGL); } nandc->buf_count = len; @@ -2926,9 +2870,10 @@ static int qcom_param_page_type_exec(struct nand_chip *chip, const struct nand_ nandc->buf_count, 0); /* restore CMD1 and VLD regs */ - if (!nandc->props->qpic_v2) { - write_reg_dma(nandc, NAND_DEV_CMD1_RESTORE, 1, 0); - write_reg_dma(nandc, NAND_DEV_CMD_VLD_RESTORE, 1, NAND_BAM_NEXT_SGL); + if (!nandc->props->qpic_version2) { + write_reg_dma(nandc, &nandc->regs->orig_cmd1, NAND_DEV_CMD1_RESTORE, 1, 0); + write_reg_dma(nandc, &nandc->regs->orig_vld, NAND_DEV_CMD_VLD_RESTORE, 1, + NAND_BAM_NEXT_SGL); } ret = submit_descs(nandc); @@ -3017,7 +2962,7 @@ static const struct nand_controller_ops qcom_nandc_ops = { static void qcom_nandc_unalloc(struct qcom_nand_controller *nandc) { - if (nandc->props->is_bam) { + if (nandc->props->supports_bam) { if (!dma_mapping_error(nandc->dev, nandc->reg_read_dma)) dma_unmap_single(nandc->dev, nandc->reg_read_dma, MAX_REG_RD * @@ -3070,7 +3015,7 @@ static int qcom_nandc_alloc(struct qcom_nand_controller *nandc) if (!nandc->reg_read_buf) return -ENOMEM; - if (nandc->props->is_bam) { + if (nandc->props->supports_bam) { nandc->reg_read_dma = dma_map_single(nandc->dev, nandc->reg_read_buf, MAX_REG_RD * @@ -3151,15 +3096,15 @@ static int qcom_nandc_setup(struct qcom_nand_controller *nandc) u32 nand_ctrl; /* kill onenand */ - if (!nandc->props->is_qpic) + if (!nandc->props->nandc_part_of_qpic) nandc_write(nandc, SFLASHC_BURST_CFG, 0); - if (!nandc->props->qpic_v2) + if (!nandc->props->qpic_version2) nandc_write(nandc, dev_cmd_reg_addr(nandc, NAND_DEV_CMD_VLD), NAND_DEV_CMD_VLD_VAL); /* enable ADM or BAM DMA */ - if (nandc->props->is_bam) { + if (nandc->props->supports_bam) { nand_ctrl = nandc_read(nandc, NAND_CTRL); /* @@ -3176,7 +3121,7 @@ static int qcom_nandc_setup(struct qcom_nand_controller *nandc) } /* save the original values of these registers */ - if (!nandc->props->qpic_v2) { + if (!nandc->props->qpic_version2) { nandc->cmd1 = nandc_read(nandc, dev_cmd_reg_addr(nandc, NAND_DEV_CMD1)); nandc->vld = NAND_DEV_CMD_VLD_VAL; } @@ -3349,7 +3294,7 @@ static int qcom_nandc_parse_dt(struct platform_device *pdev) struct device_node *np = nandc->dev->of_node; int ret; - if (!nandc->props->is_bam) { + if (!nandc->props->supports_bam) { ret = of_property_read_u32(np, "qcom,cmd-crci", &nandc->cmd_crci); if (ret) { @@ -3474,30 +3419,30 @@ static void qcom_nandc_remove(struct platform_device *pdev) static const struct qcom_nandc_props ipq806x_nandc_props = { .ecc_modes = (ECC_RS_4BIT | ECC_BCH_8BIT), - .is_bam = false, + .supports_bam = false, .use_codeword_fixup = true, .dev_cmd_reg_start = 0x0, }; static const struct qcom_nandc_props ipq4019_nandc_props = { .ecc_modes = (ECC_BCH_4BIT | ECC_BCH_8BIT), - .is_bam = true, - .is_qpic = true, + .supports_bam = true, + .nandc_part_of_qpic = true, .dev_cmd_reg_start = 0x0, }; static const struct qcom_nandc_props ipq8074_nandc_props = { .ecc_modes = (ECC_BCH_4BIT | ECC_BCH_8BIT), - .is_bam = true, - .is_qpic = true, + .supports_bam = true, + .nandc_part_of_qpic = true, .dev_cmd_reg_start = 0x7000, }; static const struct qcom_nandc_props sdx55_nandc_props = { .ecc_modes = (ECC_BCH_4BIT | ECC_BCH_8BIT), - .is_bam = true, - .is_qpic = true, - .qpic_v2 = true, + .supports_bam = true, + .nandc_part_of_qpic = true, + .qpic_version2 = true, .dev_cmd_reg_start = 0x7000, };