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Message-Id: <20230419093617.27134-1-quic_mdalam@quicinc.com>
Date: Wed, 19 Apr 2023 15:06:17 +0530
From: Md Sadre Alam <quic_mdalam@...cinc.com>
To: mani@...nel.org, miquel.raynal@...tlin.com, richard@....at,
vigneshr@...com, linux-mtd@...ts.infradead.org,
linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: quic_srichara@...cinc.com, quic_mdalam@...cinc.com
Subject: [PATCH V2] mtd: rawnand: qcom: Implement exec_op()
Implement exec_op() so we can later get rid of the legacy interface
implementation.
Co-developed-by: Sricharan R <quic_srichara@...cinc.com>
Signed-off-by: Sricharan R <quic_srichara@...cinc.com>
Signed-off-by: Md Sadre Alam <quic_mdalam@...cinc.com>
---
Change in [V2]
* Address all Miquel comments from V1, regarding exec_ops design
* Redesign qpic nand driver with exec_ops using exec_ops parser, to
fit in exec_ops framework
drivers/mtd/nand/raw/qcom_nandc.c | 869 ++++++++++++++++++------------
1 file changed, 520 insertions(+), 349 deletions(-)
diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c
index 72d6168d8a1b..17279890454d 100644
--- a/drivers/mtd/nand/raw/qcom_nandc.c
+++ b/drivers/mtd/nand/raw/qcom_nandc.c
@@ -157,6 +157,7 @@
#define OP_PAGE_PROGRAM_WITH_ECC 0x7
#define OP_PROGRAM_PAGE_SPARE 0x9
#define OP_BLOCK_ERASE 0xa
+#define OP_CHECK_STATUS 0xc
#define OP_FETCH_ID 0xb
#define OP_RESET_DEVICE 0xd
@@ -235,6 +236,7 @@ nandc_set_reg(chip, reg, \
*/
#define NAND_ERASED_CW_SET BIT(4)
+#define MAX_ADDRESS_CYCLE 5
/*
* This data type corresponds to the BAM transaction which will be used for all
* NAND transfers.
@@ -432,6 +434,7 @@ struct qcom_nand_controller {
int reg_read_pos;
u32 cmd1, vld;
+ bool exec_opwrite;
};
/*
@@ -447,6 +450,37 @@ struct qcom_nand_boot_partition {
u32 page_size;
};
+/*
+ * QCOM op for each exec_op transfer
+ *
+ * @addr1_reg: Address1 register value
+ *
+ * @addr2_reg: Address2 register value
+ *
+ * @cmd_reg: CMD register value
+ *
+ * @rdy_timeout_ms: wait ready timeout in ms
+ *
+ * @rdy_delay_ns: Additional delay in ns
+ *
+ * @data_instr_idx: data instruction index
+ *
+ * @data_instr: data instruction pointer
+ *
+ * @flag: flag for misc instruction
+ *
+ */
+struct qcom_op {
+ u32 addr1_reg;
+ u32 addr2_reg;
+ u32 cmd_reg;
+ unsigned int rdy_timeout_ms;
+ unsigned int rdy_delay_ns;
+ unsigned int data_instr_idx;
+ const struct nand_op_instr *data_instr;
+ u8 flag;
+};
+
/*
* NAND chip structure
*
@@ -765,7 +799,6 @@ static void set_address(struct qcom_nand_host *host, u16 column, int page)
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);
}
@@ -1273,155 +1306,6 @@ static void config_nand_cw_write(struct nand_chip *chip)
write_reg_dma(nandc, NAND_READ_STATUS, 1, NAND_BAM_NEXT_SGL);
}
-/*
- * the following functions are used within chip->legacy.cmdfunc() to
- * perform different NAND_CMD_* commands
- */
-
-/* sets up descriptors for NAND_CMD_PARAM */
-static int nandc_param(struct qcom_nand_host *host)
-{
- struct nand_chip *chip = &host->chip;
- struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
-
- /*
- * NAND_CMD_PARAM is called before we know much about the FLASH chip
- * in use. we configure the controller to perform a raw read of 512
- * bytes to read onfi params
- */
- if (nandc->props->qpic_v2)
- nandc_set_reg(chip, NAND_FLASH_CMD, OP_PAGE_READ_ONFI_READ |
- PAGE_ACC | LAST_PAGE);
- else
- nandc_set_reg(chip, NAND_FLASH_CMD, OP_PAGE_READ |
- PAGE_ACC | LAST_PAGE);
-
- 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);
-
- /* 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);
- }
-
- nandc_set_reg(chip, NAND_EXEC_CMD, 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);
- }
-
- nandc_set_read_loc(chip, 0, 0, 0, 512, 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);
- }
-
- nandc->buf_count = 512;
- memset(nandc->data_buffer, 0xff, nandc->buf_count);
-
- config_nand_single_cw_page_read(chip, false, 0);
-
- read_data_dma(nandc, FLASH_BUF_ACC, nandc->data_buffer,
- 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);
- }
-
- return 0;
-}
-
-/* sets up descriptors for NAND_CMD_ERASE1 */
-static int erase_block(struct qcom_nand_host *host, int page_addr)
-{
- struct nand_chip *chip = &host->chip;
- struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
-
- nandc_set_reg(chip, NAND_FLASH_CMD,
- OP_BLOCK_ERASE | PAGE_ACC | LAST_PAGE);
- nandc_set_reg(chip, NAND_ADDR0, page_addr);
- nandc_set_reg(chip, NAND_ADDR1, 0);
- 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);
- nandc_set_reg(chip, NAND_FLASH_STATUS, host->clrflashstatus);
- nandc_set_reg(chip, NAND_READ_STATUS, host->clrreadstatus);
-
- 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);
-
- 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);
-
- return 0;
-}
-
-/* sets up descriptors for NAND_CMD_READID */
-static int read_id(struct qcom_nand_host *host, int column)
-{
- struct nand_chip *chip = &host->chip;
- struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
-
- if (column == -1)
- return 0;
-
- nandc_set_reg(chip, NAND_FLASH_CMD, OP_FETCH_ID);
- nandc_set_reg(chip, NAND_ADDR0, column);
- nandc_set_reg(chip, NAND_ADDR1, 0);
- nandc_set_reg(chip, NAND_FLASH_CHIP_SELECT,
- nandc->props->is_bam ? 0 : DM_EN);
- nandc_set_reg(chip, NAND_EXEC_CMD, 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);
-
- read_reg_dma(nandc, NAND_READ_ID, 1, NAND_BAM_NEXT_SGL);
-
- return 0;
-}
-
-/* sets up descriptors for NAND_CMD_RESET */
-static int reset(struct qcom_nand_host *host)
-{
- struct nand_chip *chip = &host->chip;
- struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
-
- nandc_set_reg(chip, NAND_FLASH_CMD, OP_RESET_DEVICE);
- nandc_set_reg(chip, NAND_EXEC_CMD, 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);
-
- read_reg_dma(nandc, NAND_FLASH_STATUS, 1, NAND_BAM_NEXT_SGL);
-
- return 0;
-}
-
/* helpers to submit/free our list of dma descriptors */
static int submit_descs(struct qcom_nand_controller *nandc)
{
@@ -1517,139 +1401,11 @@ static void pre_command(struct qcom_nand_host *host, int command)
clear_read_regs(nandc);
if (command == NAND_CMD_RESET || command == NAND_CMD_READID ||
- command == NAND_CMD_PARAM || command == NAND_CMD_ERASE1)
+ command == NAND_CMD_PARAM || command == NAND_CMD_ERASE1 ||
+ command == NAND_CMD_STATUS)
clear_bam_transaction(nandc);
}
-/*
- * this is called after NAND_CMD_PAGEPROG and NAND_CMD_ERASE1 to set our
- * privately maintained status byte, this status byte can be read after
- * NAND_CMD_STATUS is called
- */
-static void parse_erase_write_errors(struct qcom_nand_host *host, int command)
-{
- struct nand_chip *chip = &host->chip;
- struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
- struct nand_ecc_ctrl *ecc = &chip->ecc;
- int num_cw;
- int i;
-
- num_cw = command == NAND_CMD_PAGEPROG ? ecc->steps : 1;
- nandc_read_buffer_sync(nandc, true);
-
- for (i = 0; i < num_cw; i++) {
- u32 flash_status = le32_to_cpu(nandc->reg_read_buf[i]);
-
- if (flash_status & FS_MPU_ERR)
- host->status &= ~NAND_STATUS_WP;
-
- if (flash_status & FS_OP_ERR || (i == (num_cw - 1) &&
- (flash_status &
- FS_DEVICE_STS_ERR)))
- host->status |= NAND_STATUS_FAIL;
- }
-}
-
-static void post_command(struct qcom_nand_host *host, int command)
-{
- struct nand_chip *chip = &host->chip;
- struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
-
- switch (command) {
- case NAND_CMD_READID:
- nandc_read_buffer_sync(nandc, true);
- memcpy(nandc->data_buffer, nandc->reg_read_buf,
- nandc->buf_count);
- break;
- case NAND_CMD_PAGEPROG:
- case NAND_CMD_ERASE1:
- parse_erase_write_errors(host, command);
- break;
- default:
- break;
- }
-}
-
-/*
- * Implements chip->legacy.cmdfunc. It's only used for a limited set of
- * commands. The rest of the commands wouldn't be called by upper layers.
- * For example, NAND_CMD_READOOB would never be called because we have our own
- * versions of read_oob ops for nand_ecc_ctrl.
- */
-static void qcom_nandc_command(struct nand_chip *chip, unsigned int command,
- int column, int page_addr)
-{
- struct qcom_nand_host *host = to_qcom_nand_host(chip);
- struct nand_ecc_ctrl *ecc = &chip->ecc;
- struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
- bool wait = false;
- int ret = 0;
-
- pre_command(host, command);
-
- switch (command) {
- case NAND_CMD_RESET:
- ret = reset(host);
- wait = true;
- break;
-
- case NAND_CMD_READID:
- nandc->buf_count = 4;
- ret = read_id(host, column);
- wait = true;
- break;
-
- case NAND_CMD_PARAM:
- ret = nandc_param(host);
- wait = true;
- break;
-
- case NAND_CMD_ERASE1:
- ret = erase_block(host, page_addr);
- wait = true;
- break;
-
- case NAND_CMD_READ0:
- /* we read the entire page for now */
- WARN_ON(column != 0);
-
- host->use_ecc = true;
- set_address(host, 0, page_addr);
- update_rw_regs(host, ecc->steps, true, 0);
- break;
-
- case NAND_CMD_SEQIN:
- WARN_ON(column != 0);
- set_address(host, 0, page_addr);
- break;
-
- case NAND_CMD_PAGEPROG:
- case NAND_CMD_STATUS:
- case NAND_CMD_NONE:
- default:
- break;
- }
-
- if (ret) {
- dev_err(nandc->dev, "failure executing command %d\n",
- command);
- free_descs(nandc);
- return;
- }
-
- if (wait) {
- ret = submit_descs(nandc);
- if (ret)
- dev_err(nandc->dev,
- "failure submitting descs for command %d\n",
- command);
- }
-
- free_descs(nandc);
-
- post_command(host, command);
-}
-
/*
* when using BCH ECC, the HW flags an error in NAND_FLASH_STATUS if it read
* an erased CW, and reports an erased CW in NAND_ERASED_CW_DETECT_STATUS.
@@ -1735,7 +1491,8 @@ 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, 2048);
host->use_ecc = false;
if (nandc->props->qpic_v2)
@@ -2047,7 +1804,9 @@ static int read_page_ecc(struct qcom_nand_host *host, u8 *data_buf,
return ret;
}
- return parse_read_errors(host, data_buf_start, oob_buf_start, page);
+ ret = parse_read_errors(host, data_buf_start, oob_buf_start, page);
+
+ return ret;
}
/*
@@ -2154,12 +1913,25 @@ static int qcom_nandc_read_page(struct nand_chip *chip, uint8_t *buf,
{
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;
+ int ret = 0;
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;
+ ret = nand_read_page_op(chip, page, 0, buf, 2048);
+ if (ret)
+ return ret;
+
+ 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;
@@ -2229,6 +2001,10 @@ 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);
@@ -2494,64 +2270,6 @@ static int qcom_nandc_block_markbad(struct nand_chip *chip, loff_t ofs)
return nand_prog_page_end_op(chip);
}
-/*
- * the three functions below implement chip->legacy.read_byte(),
- * chip->legacy.read_buf() and chip->legacy.write_buf() respectively. these
- * aren't used for reading/writing page data, they are used for smaller data
- * like reading id, status etc
- */
-static uint8_t qcom_nandc_read_byte(struct nand_chip *chip)
-{
- struct qcom_nand_host *host = to_qcom_nand_host(chip);
- struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
- u8 *buf = nandc->data_buffer;
- u8 ret = 0x0;
-
- if (host->last_command == NAND_CMD_STATUS) {
- ret = host->status;
-
- host->status = NAND_STATUS_READY | NAND_STATUS_WP;
-
- return ret;
- }
-
- if (nandc->buf_start < nandc->buf_count)
- ret = buf[nandc->buf_start++];
-
- return ret;
-}
-
-static void qcom_nandc_read_buf(struct nand_chip *chip, uint8_t *buf, int len)
-{
- struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
- int real_len = min_t(size_t, len, nandc->buf_count - nandc->buf_start);
-
- memcpy(buf, nandc->data_buffer + nandc->buf_start, real_len);
- nandc->buf_start += real_len;
-}
-
-static void qcom_nandc_write_buf(struct nand_chip *chip, const uint8_t *buf,
- int len)
-{
- struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
- int real_len = min_t(size_t, len, nandc->buf_count - nandc->buf_start);
-
- memcpy(nandc->data_buffer + nandc->buf_start, buf, real_len);
-
- nandc->buf_start += real_len;
-}
-
-/* we support only one external chip for now */
-static void qcom_nandc_select_chip(struct nand_chip *chip, int chipnr)
-{
- struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
-
- if (chipnr <= 0)
- return;
-
- dev_warn(nandc->dev, "invalid chip select\n");
-}
-
/*
* NAND controller page layout info
*
@@ -2867,8 +2585,469 @@ static int qcom_nand_attach_chip(struct nand_chip *chip)
return 0;
}
+static int qcom_op_cmd_mapping(struct qcom_nand_controller *nandc, u8 cmd,
+ struct qcom_op *q_op)
+{
+ int ret = 0;
+
+ switch (cmd) {
+ case NAND_CMD_RESET:
+ ret = OP_RESET_DEVICE;
+ break;
+ case NAND_CMD_READID:
+ ret = OP_FETCH_ID;
+ break;
+ case NAND_CMD_PARAM:
+ if (nandc->props->qpic_v2)
+ ret = OP_PAGE_READ_ONFI_READ;
+ else
+ ret = OP_PAGE_READ;
+ break;
+ case NAND_CMD_ERASE1:
+ case NAND_CMD_ERASE2:
+ ret = OP_BLOCK_ERASE;
+ break;
+ case NAND_CMD_STATUS:
+ ret = OP_CHECK_STATUS;
+ break;
+ case NAND_CMD_PAGEPROG:
+ ret = OP_PROGRAM_PAGE;
+ q_op->flag = NAND_CMD_PAGEPROG;
+ nandc->exec_opwrite = true;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+/* NAND framework ->exec_op() hooks and related helpers */
+static void qcom_parse_instructions(struct nand_chip *chip,
+ const struct nand_subop *subop,
+ struct qcom_op *q_op)
+{
+ struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
+ const struct nand_op_instr *instr = NULL;
+ unsigned int op_id;
+ int i;
+
+ memset(q_op, 0, sizeof(*q_op));
+
+ for (op_id = 0; op_id < subop->ninstrs; op_id++) {
+ unsigned int offset, naddrs;
+ const u8 *addrs;
+
+ instr = &subop->instrs[op_id];
+
+ switch (instr->type) {
+ case NAND_OP_CMD_INSTR:
+ q_op->cmd_reg = qcom_op_cmd_mapping(nandc, instr->ctx.cmd.opcode, q_op);
+ q_op->rdy_delay_ns = instr->delay_ns;
+ break;
+
+ case NAND_OP_ADDR_INSTR:
+ offset = nand_subop_get_addr_start_off(subop, op_id);
+ naddrs = nand_subop_get_num_addr_cyc(subop, op_id);
+ addrs = &instr->ctx.addr.addrs[offset];
+ for (i = 0; i < min(5U, naddrs); i++) {
+ if (i < 4)
+ q_op->addr1_reg |= (u32)addrs[i] << i * 8;
+ else
+ q_op->addr2_reg |= addrs[i];
+ }
+ q_op->rdy_delay_ns = instr->delay_ns;
+ break;
+
+ case NAND_OP_DATA_IN_INSTR:
+ q_op->data_instr = instr;
+ q_op->data_instr_idx = op_id;
+ q_op->rdy_delay_ns = instr->delay_ns;
+ fallthrough;
+ case NAND_OP_DATA_OUT_INSTR:
+ q_op->rdy_delay_ns = instr->delay_ns;
+ break;
+
+ case NAND_OP_WAITRDY_INSTR:
+ q_op->rdy_timeout_ms = instr->ctx.waitrdy.timeout_ms;
+ q_op->rdy_delay_ns = instr->delay_ns;
+ break;
+ }
+ }
+}
+
+static void qcom_delay_ns(unsigned int ns)
+{
+ if (!ns)
+ return;
+
+ if (ns < 10000)
+ ndelay(ns);
+ else
+ udelay(DIV_ROUND_UP(ns, 1000));
+}
+
+static int qcom_wait_rdy_poll(struct nand_chip *chip, unsigned int time_ms)
+{
+ struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
+ unsigned long start = jiffies + msecs_to_jiffies(time_ms);
+ u32 flash;
+
+ nandc_read_buffer_sync(nandc, true);
+
+ do {
+ flash = le32_to_cpu(nandc->reg_read_buf[0]);
+ if (flash & FS_READY_BSY_N)
+ return 0;
+ cpu_relax();
+ } while (time_after(start, jiffies));
+
+ dev_err(nandc->dev, "Timeout waiting for device to be ready:0x%08x\n", flash);
+
+ return -ETIMEDOUT;
+}
+
+static int qcom_read_status_exec(struct nand_chip *chip,
+ const struct nand_subop *subop)
+{
+ 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;
+ struct qcom_op q_op;
+ const struct nand_op_instr *instr = NULL;
+ unsigned int op_id = 0;
+ unsigned int len = 0;
+ int ret = 0, num_cw = 1, i;
+ u32 flash_status;
+
+ host->status = NAND_STATUS_READY | NAND_STATUS_WP;
+
+ qcom_parse_instructions(chip, subop, &q_op);
+
+ if (nandc->exec_opwrite) {
+ num_cw = ecc->steps;
+ nandc->exec_opwrite = false;
+ }
+
+ pre_command(host, NAND_CMD_STATUS);
+
+ nandc_set_reg(chip, NAND_FLASH_CMD, q_op.cmd_reg);
+ nandc_set_reg(chip, NAND_EXEC_CMD, 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);
+
+ read_reg_dma(nandc, NAND_FLASH_STATUS, 1, NAND_BAM_NEXT_SGL);
+
+ ret = submit_descs(nandc);
+ if (ret)
+ dev_err(nandc->dev, "failure in sbumitting status descriptor\n");
+
+ free_descs(nandc);
+
+ nandc_read_buffer_sync(nandc, true);
+ for (i = 0; i < num_cw; i++) {
+ flash_status = le32_to_cpu(nandc->reg_read_buf[i]);
+
+ if (flash_status & FS_MPU_ERR)
+ host->status &= ~NAND_STATUS_WP;
+
+ if (flash_status & FS_OP_ERR || (i == (num_cw - 1) &&
+ (flash_status & FS_DEVICE_STS_ERR)))
+ host->status |= NAND_STATUS_FAIL;
+ }
+
+ flash_status = host->status;
+
+ instr = q_op.data_instr;
+ op_id = q_op.data_instr_idx;
+ len = nand_subop_get_data_len(subop, op_id);
+ memcpy(instr->ctx.data.buf.in, &flash_status, len);
+
+ return ret;
+}
+
+static int qcom_erase_cmd_type_exec(struct nand_chip *chip, const struct nand_subop *subop)
+{
+ 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)
+{
+ 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;
+ const struct nand_op_instr *instr = NULL;
+ unsigned int op_id = 0;
+ unsigned int len = 0;
+ int ret = 0;
+
+ qcom_parse_instructions(chip, subop, &q_op);
+
+ q_op.cmd_reg |= PAGE_ACC | LAST_PAGE;
+
+ pre_command(host, NAND_CMD_PARAM);
+ /*
+ * NAND_CMD_PARAM is called before we know much about the FLASH chip
+ * in use. we configure the controller to perform a raw read of 512
+ * bytes to read onfi params
+ */
+ if (nandc->props->qpic_v2)
+ nandc_set_reg(chip, NAND_FLASH_CMD, q_op.cmd_reg);
+ else
+ 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);
+
+ /* 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);
+ }
+
+ nandc_set_reg(chip, NAND_EXEC_CMD, 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);
+ }
+
+ nandc_set_read_loc(chip, 0, 0, 0, 512, 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);
+ }
+
+ nandc->buf_count = 512;
+ memset(nandc->data_buffer, 0xff, nandc->buf_count);
+
+ config_nand_single_cw_page_read(chip, false, 0);
+
+ read_data_dma(nandc, FLASH_BUF_ACC, nandc->data_buffer,
+ 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);
+ }
+
+ ret = submit_descs(nandc);
+ if (ret)
+ dev_err(nandc->dev, "failure in sbumitting param page descriptor\n");
+
+ free_descs(nandc);
+
+ ret = qcom_wait_rdy_poll(chip, q_op.rdy_timeout_ms);
+
+ instr = q_op.data_instr;
+ op_id = q_op.data_instr_idx;
+ len = nand_subop_get_data_len(subop, op_id);
+ memcpy(instr->ctx.data.buf.in, nandc->data_buffer, len);
+
+ return ret;
+}
+
+static int qcom_read_id_type_exec(struct nand_chip *chip, const struct nand_subop *subop)
+{
+ struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
+ struct qcom_nand_host *host = to_qcom_nand_host(chip);
+ struct qcom_op q_op;
+ const struct nand_op_instr *instr = NULL;
+ unsigned int op_id = 0;
+ unsigned int len = 0;
+ int ret = 0;
+
+ qcom_parse_instructions(chip, subop, &q_op);
+
+ pre_command(host, NAND_CMD_READID);
+
+ 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);
+
+ write_reg_dma(nandc, NAND_FLASH_CMD, 4, NAND_BAM_NEXT_SGL);
+ write_reg_dma(nandc, NAND_EXEC_CMD, 1, NAND_BAM_NEXT_SGL);
+
+ read_reg_dma(nandc, NAND_READ_ID, 1, NAND_BAM_NEXT_SGL);
+
+ ret = submit_descs(nandc);
+ if (ret)
+ dev_err(nandc->dev, "failure in sbumitting read id descriptor\n");
+
+ free_descs(nandc);
+
+ instr = q_op.data_instr;
+ op_id = q_op.data_instr_idx;
+ len = nand_subop_get_data_len(subop, op_id);
+
+ nandc_read_buffer_sync(nandc, true);
+ memcpy(instr->ctx.data.buf.in, nandc->reg_read_buf, len);
+
+ return ret;
+}
+
+static int qcom_misc_cmd_type_exec(struct nand_chip *chip, const struct nand_subop *subop)
+{
+ struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
+ struct qcom_nand_host *host = to_qcom_nand_host(chip);
+ struct qcom_op q_op;
+ int ret = 0;
+
+ qcom_parse_instructions(chip, subop, &q_op);
+
+ if (q_op.flag == NAND_CMD_PAGEPROG)
+ goto wait_rdy;
+
+ pre_command(host, NAND_CMD_RESET);
+
+ nandc_set_reg(chip, NAND_FLASH_CMD, q_op.cmd_reg);
+ nandc_set_reg(chip, NAND_EXEC_CMD, 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);
+
+ read_reg_dma(nandc, NAND_FLASH_STATUS, 1, NAND_BAM_NEXT_SGL);
+
+ ret = submit_descs(nandc);
+ if (ret)
+ dev_err(nandc->dev, "failure in sbumitting misc descriptor\n");
+
+ free_descs(nandc);
+
+wait_rdy:
+ qcom_delay_ns(q_op.rdy_delay_ns);
+
+ ret = qcom_wait_rdy_poll(chip, q_op.rdy_timeout_ms);
+
+ return ret;
+}
+
+static int qcom_data_read_type_exec(struct nand_chip *chip, const struct nand_subop *subop)
+{
+ /* currently read_exec_op() return 0 , and all the read operation handle in
+ * actual API itself
+ */
+ return 0;
+}
+
+static int qcom_data_write_type_exec(struct nand_chip *chip, const struct nand_subop *subop)
+{
+ /* currently write_exec_op() return 0, and all the write operation handle in
+ * actual API itself
+ */
+ struct qcom_op q_op;
+
+ qcom_parse_instructions(chip, subop, &q_op);
+
+ return 0;
+}
+
+static const struct nand_op_parser qcom_op_parser = NAND_OP_PARSER(
+ NAND_OP_PARSER_PATTERN(
+ qcom_misc_cmd_type_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(false)),
+ NAND_OP_PARSER_PATTERN(
+ qcom_read_id_type_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(false, MAX_ADDRESS_CYCLE),
+ NAND_OP_PARSER_PAT_DATA_IN_ELEM(false, 8)),
+ NAND_OP_PARSER_PATTERN(
+ qcom_param_page_type_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(false, MAX_ADDRESS_CYCLE),
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(true),
+ NAND_OP_PARSER_PAT_DATA_IN_ELEM(false, 512)),
+ NAND_OP_PARSER_PATTERN(
+ qcom_read_status_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_DATA_IN_ELEM(false, 1)),
+ NAND_OP_PARSER_PATTERN(
+ qcom_erase_cmd_type_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(false, MAX_ADDRESS_CYCLE),
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(false)),
+ NAND_OP_PARSER_PATTERN(
+ qcom_data_read_type_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(false, MAX_ADDRESS_CYCLE),
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(true),
+ NAND_OP_PARSER_PAT_DATA_IN_ELEM(false, 2048)),
+ NAND_OP_PARSER_PATTERN(
+ qcom_data_write_type_exec,
+ NAND_OP_PARSER_PAT_CMD_ELEM(true),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(true, MAX_ADDRESS_CYCLE)),
+ );
+
+static int qcom_nand_exec_op(struct nand_chip *chip,
+ const struct nand_operation *op,
+ bool check_only)
+{
+ if (check_only)
+ return 0;
+
+ return nand_op_parser_exec_op(chip, &qcom_op_parser,
+ op, check_only);
+}
+
static const struct nand_controller_ops qcom_nandc_ops = {
.attach_chip = qcom_nand_attach_chip,
+ .exec_op = qcom_nand_exec_op,
};
static void qcom_nandc_unalloc(struct qcom_nand_controller *nandc)
@@ -3135,14 +3314,6 @@ static int qcom_nand_host_init_and_register(struct qcom_nand_controller *nandc,
mtd->owner = THIS_MODULE;
mtd->dev.parent = dev;
- chip->legacy.cmdfunc = qcom_nandc_command;
- chip->legacy.select_chip = qcom_nandc_select_chip;
- chip->legacy.read_byte = qcom_nandc_read_byte;
- chip->legacy.read_buf = qcom_nandc_read_buf;
- chip->legacy.write_buf = qcom_nandc_write_buf;
- chip->legacy.set_features = nand_get_set_features_notsupp;
- chip->legacy.get_features = nand_get_set_features_notsupp;
-
/*
* the bad block marker is readable only when we read the last codeword
* of a page with ECC disabled. currently, the nand_base and nand_bbt
--
2.17.1
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