[PATCH 19/19] mtd: rawnand: Move JEDEC code to nand_jedec.c
Boris Brezillon
boris.brezillon at bootlin.com
Thu Sep 6 22:38:51 UTC 2018
This moves ONFI related code to nand_onfi.c and ONFI related
struct/macros to include/linux/mtd/onfi.h.
Signed-off-by: Boris Brezillon <boris.brezillon at bootlin.com>
---
drivers/mtd/nand/raw/Makefile | 1 +
drivers/mtd/nand/raw/internals.h | 3 +
drivers/mtd/nand/raw/nand_base.c | 98 +--------------------------------
drivers/mtd/nand/raw/nand_jedec.c | 113 ++++++++++++++++++++++++++++++++++++++
include/linux/mtd/jedec.h | 91 ++++++++++++++++++++++++++++++
include/linux/mtd/rawnand.h | 79 +-------------------------
6 files changed, 210 insertions(+), 175 deletions(-)
create mode 100644 drivers/mtd/nand/raw/nand_jedec.c
create mode 100644 include/linux/mtd/jedec.h
diff --git a/drivers/mtd/nand/raw/Makefile b/drivers/mtd/nand/raw/Makefile
index cc9f50f3ad1b..be2c17863ee5 100644
--- a/drivers/mtd/nand/raw/Makefile
+++ b/drivers/mtd/nand/raw/Makefile
@@ -59,6 +59,7 @@ obj-$(CONFIG_MTD_NAND_TEGRA) += tegra_nand.o
nand-objs := nand_base.o nand_legacy.o nand_bbt.o nand_timings.o nand_ids.o
nand-objs += nand_onfi.o
+nand-objs += nand_jedec.o
nand-objs += nand_amd.o
nand-objs += nand_hynix.o
nand-objs += nand_macronix.o
diff --git a/drivers/mtd/nand/raw/internals.h b/drivers/mtd/nand/raw/internals.h
index 1ce720a8d756..88b5da620e7d 100644
--- a/drivers/mtd/nand/raw/internals.h
+++ b/drivers/mtd/nand/raw/internals.h
@@ -108,4 +108,7 @@ int nand_legacy_check_hooks(struct nand_chip *chip);
u16 onfi_crc16(u16 crc, u8 const *p, size_t len);
int nand_onfi_detect(struct nand_chip *chip);
+/* JEDEC functions */
+int nand_jedec_detect(struct nand_chip *chip);
+
#endif /* __LINUX_RAWNAND_INTERNALS */
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index 812e8bd6ad82..dc3955da0426 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -4387,102 +4387,6 @@ void sanitize_string(uint8_t *s, size_t len)
strim(s);
}
-/*
- * Check if the NAND chip is JEDEC compliant, returns 1 if it is, 0 otherwise.
- */
-static int nand_flash_detect_jedec(struct nand_chip *chip)
-{
- struct mtd_info *mtd = nand_to_mtd(chip);
- struct nand_jedec_params *p;
- struct jedec_ecc_info *ecc;
- int jedec_version = 0;
- char id[5];
- int i, val, ret;
-
- /* Try JEDEC for unknown chip or LP */
- ret = nand_readid_op(chip, 0x40, id, sizeof(id));
- if (ret || strncmp(id, "JEDEC", sizeof(id)))
- return 0;
-
- /* JEDEC chip: allocate a buffer to hold its parameter page */
- p = kzalloc(sizeof(*p), GFP_KERNEL);
- if (!p)
- return -ENOMEM;
-
- ret = nand_read_param_page_op(chip, 0x40, NULL, 0);
- if (ret) {
- ret = 0;
- goto free_jedec_param_page;
- }
-
- for (i = 0; i < 3; i++) {
- ret = nand_read_data_op(chip, p, sizeof(*p), true);
- if (ret) {
- ret = 0;
- goto free_jedec_param_page;
- }
-
- if (onfi_crc16(ONFI_CRC_BASE, (uint8_t *)p, 510) ==
- le16_to_cpu(p->crc))
- break;
- }
-
- if (i == 3) {
- pr_err("Could not find valid JEDEC parameter page; aborting\n");
- goto free_jedec_param_page;
- }
-
- /* Check version */
- val = le16_to_cpu(p->revision);
- if (val & (1 << 2))
- jedec_version = 10;
- else if (val & (1 << 1))
- jedec_version = 1; /* vendor specific version */
-
- if (!jedec_version) {
- pr_info("unsupported JEDEC version: %d\n", val);
- goto free_jedec_param_page;
- }
-
- sanitize_string(p->manufacturer, sizeof(p->manufacturer));
- sanitize_string(p->model, sizeof(p->model));
- chip->parameters.model = kstrdup(p->model, GFP_KERNEL);
- if (!chip->parameters.model) {
- ret = -ENOMEM;
- goto free_jedec_param_page;
- }
-
- mtd->writesize = le32_to_cpu(p->byte_per_page);
-
- /* Please reference to the comment for nand_flash_detect_onfi. */
- mtd->erasesize = 1 << (fls(le32_to_cpu(p->pages_per_block)) - 1);
- mtd->erasesize *= mtd->writesize;
-
- mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page);
-
- /* Please reference to the comment for nand_flash_detect_onfi. */
- chip->chipsize = 1 << (fls(le32_to_cpu(p->blocks_per_lun)) - 1);
- chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count;
- chip->bits_per_cell = p->bits_per_cell;
-
- if (le16_to_cpu(p->features) & JEDEC_FEATURE_16_BIT_BUS)
- chip->options |= NAND_BUSWIDTH_16;
-
- /* ECC info */
- ecc = &p->ecc_info[0];
-
- if (ecc->codeword_size >= 9) {
- chip->ecc_strength_ds = ecc->ecc_bits;
- chip->ecc_step_ds = 1 << ecc->codeword_size;
- } else {
- pr_warn("Invalid codeword size\n");
- }
-
-free_jedec_param_page:
- kfree(p);
- return ret;
-}
-
/*
* nand_id_has_period - Check if an ID string has a given wraparound period
* @id_data: the ID string
@@ -4795,7 +4699,7 @@ static int nand_detect(struct nand_chip *chip, struct nand_flash_dev *type)
goto ident_done;
/* Check if the chip is JEDEC compliant */
- ret = nand_flash_detect_jedec(chip);
+ ret = nand_jedec_detect(chip);
if (ret < 0)
return ret;
else if (ret)
diff --git a/drivers/mtd/nand/raw/nand_jedec.c b/drivers/mtd/nand/raw/nand_jedec.c
new file mode 100644
index 000000000000..5c26492c841d
--- /dev/null
+++ b/drivers/mtd/nand/raw/nand_jedec.c
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2000 Steven J. Hill (sjhill at realitydiluted.com)
+ * 2002-2006 Thomas Gleixner (tglx at linutronix.de)
+ *
+ * Credits:
+ * David Woodhouse for adding multichip support
+ *
+ * Aleph One Ltd. and Toby Churchill Ltd. for supporting the
+ * rework for 2K page size chips
+ *
+ * This file contains all ONFI helpers.
+ */
+
+#include <linux/slab.h>
+
+#include "internals.h"
+
+/*
+ * Check if the NAND chip is JEDEC compliant, returns 1 if it is, 0 otherwise.
+ */
+int nand_jedec_detect(struct nand_chip *chip)
+{
+ struct mtd_info *mtd = nand_to_mtd(chip);
+ struct nand_jedec_params *p;
+ struct jedec_ecc_info *ecc;
+ int jedec_version = 0;
+ char id[5];
+ int i, val, ret;
+
+ /* Try JEDEC for unknown chip or LP */
+ ret = nand_readid_op(chip, 0x40, id, sizeof(id));
+ if (ret || strncmp(id, "JEDEC", sizeof(id)))
+ return 0;
+
+ /* JEDEC chip: allocate a buffer to hold its parameter page */
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (!p)
+ return -ENOMEM;
+
+ ret = nand_read_param_page_op(chip, 0x40, NULL, 0);
+ if (ret) {
+ ret = 0;
+ goto free_jedec_param_page;
+ }
+
+ for (i = 0; i < 3; i++) {
+ ret = nand_read_data_op(chip, p, sizeof(*p), true);
+ if (ret) {
+ ret = 0;
+ goto free_jedec_param_page;
+ }
+
+ if (onfi_crc16(ONFI_CRC_BASE, (uint8_t *)p, 510) ==
+ le16_to_cpu(p->crc))
+ break;
+ }
+
+ if (i == 3) {
+ pr_err("Could not find valid JEDEC parameter page; aborting\n");
+ goto free_jedec_param_page;
+ }
+
+ /* Check version */
+ val = le16_to_cpu(p->revision);
+ if (val & (1 << 2))
+ jedec_version = 10;
+ else if (val & (1 << 1))
+ jedec_version = 1; /* vendor specific version */
+
+ if (!jedec_version) {
+ pr_info("unsupported JEDEC version: %d\n", val);
+ goto free_jedec_param_page;
+ }
+
+ sanitize_string(p->manufacturer, sizeof(p->manufacturer));
+ sanitize_string(p->model, sizeof(p->model));
+ chip->parameters.model = kstrdup(p->model, GFP_KERNEL);
+ if (!chip->parameters.model) {
+ ret = -ENOMEM;
+ goto free_jedec_param_page;
+ }
+
+ mtd->writesize = le32_to_cpu(p->byte_per_page);
+
+ /* Please reference to the comment for nand_flash_detect_onfi. */
+ mtd->erasesize = 1 << (fls(le32_to_cpu(p->pages_per_block)) - 1);
+ mtd->erasesize *= mtd->writesize;
+
+ mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page);
+
+ /* Please reference to the comment for nand_flash_detect_onfi. */
+ chip->chipsize = 1 << (fls(le32_to_cpu(p->blocks_per_lun)) - 1);
+ chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count;
+ chip->bits_per_cell = p->bits_per_cell;
+
+ if (le16_to_cpu(p->features) & JEDEC_FEATURE_16_BIT_BUS)
+ chip->options |= NAND_BUSWIDTH_16;
+
+ /* ECC info */
+ ecc = &p->ecc_info[0];
+
+ if (ecc->codeword_size >= 9) {
+ chip->ecc_strength_ds = ecc->ecc_bits;
+ chip->ecc_step_ds = 1 << ecc->codeword_size;
+ } else {
+ pr_warn("Invalid codeword size\n");
+ }
+
+free_jedec_param_page:
+ kfree(p);
+ return ret;
+}
diff --git a/include/linux/mtd/jedec.h b/include/linux/mtd/jedec.h
new file mode 100644
index 000000000000..0b6b59f7cfbd
--- /dev/null
+++ b/include/linux/mtd/jedec.h
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright © 2000-2010 David Woodhouse <dwmw2 at infradead.org>
+ * Steven J. Hill <sjhill at realitydiluted.com>
+ * Thomas Gleixner <tglx at linutronix.de>
+ *
+ * Contains all JEDEC related definitions
+ */
+
+#ifndef __LINUX_MTD_JEDEC_H
+#define __LINUX_MTD_JEDEC_H
+
+struct jedec_ecc_info {
+ u8 ecc_bits;
+ u8 codeword_size;
+ __le16 bb_per_lun;
+ __le16 block_endurance;
+ u8 reserved[2];
+} __packed;
+
+/* JEDEC features */
+#define JEDEC_FEATURE_16_BIT_BUS (1 << 0)
+
+struct nand_jedec_params {
+ /* rev info and features block */
+ /* 'J' 'E' 'S' 'D' */
+ u8 sig[4];
+ __le16 revision;
+ __le16 features;
+ u8 opt_cmd[3];
+ __le16 sec_cmd;
+ u8 num_of_param_pages;
+ u8 reserved0[18];
+
+ /* manufacturer information block */
+ char manufacturer[12];
+ char model[20];
+ u8 jedec_id[6];
+ u8 reserved1[10];
+
+ /* memory organization block */
+ __le32 byte_per_page;
+ __le16 spare_bytes_per_page;
+ u8 reserved2[6];
+ __le32 pages_per_block;
+ __le32 blocks_per_lun;
+ u8 lun_count;
+ u8 addr_cycles;
+ u8 bits_per_cell;
+ u8 programs_per_page;
+ u8 multi_plane_addr;
+ u8 multi_plane_op_attr;
+ u8 reserved3[38];
+
+ /* electrical parameter block */
+ __le16 async_sdr_speed_grade;
+ __le16 toggle_ddr_speed_grade;
+ __le16 sync_ddr_speed_grade;
+ u8 async_sdr_features;
+ u8 toggle_ddr_features;
+ u8 sync_ddr_features;
+ __le16 t_prog;
+ __le16 t_bers;
+ __le16 t_r;
+ __le16 t_r_multi_plane;
+ __le16 t_ccs;
+ __le16 io_pin_capacitance_typ;
+ __le16 input_pin_capacitance_typ;
+ __le16 clk_pin_capacitance_typ;
+ u8 driver_strength_support;
+ __le16 t_adl;
+ u8 reserved4[36];
+
+ /* ECC and endurance block */
+ u8 guaranteed_good_blocks;
+ __le16 guaranteed_block_endurance;
+ struct jedec_ecc_info ecc_info[4];
+ u8 reserved5[29];
+
+ /* reserved */
+ u8 reserved6[148];
+
+ /* vendor */
+ __le16 vendor_rev_num;
+ u8 reserved7[88];
+
+ /* CRC for Parameter Page */
+ __le16 crc;
+} __packed;
+
+#endif /* __LINUX_MTD_JEDEC_H */
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index f4fc0cce7c55..68d09e01fa56 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -21,6 +21,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/flashchip.h>
#include <linux/mtd/bbm.h>
+#include <linux/mtd/jedec.h>
#include <linux/mtd/onfi.h>
#include <linux/of.h>
#include <linux/types.h>
@@ -205,84 +206,6 @@ enum nand_ecc_algo {
#define NAND_CI_CELLTYPE_MSK 0x0C
#define NAND_CI_CELLTYPE_SHIFT 2
-struct jedec_ecc_info {
- u8 ecc_bits;
- u8 codeword_size;
- __le16 bb_per_lun;
- __le16 block_endurance;
- u8 reserved[2];
-} __packed;
-
-/* JEDEC features */
-#define JEDEC_FEATURE_16_BIT_BUS (1 << 0)
-
-struct nand_jedec_params {
- /* rev info and features block */
- /* 'J' 'E' 'S' 'D' */
- u8 sig[4];
- __le16 revision;
- __le16 features;
- u8 opt_cmd[3];
- __le16 sec_cmd;
- u8 num_of_param_pages;
- u8 reserved0[18];
-
- /* manufacturer information block */
- char manufacturer[12];
- char model[20];
- u8 jedec_id[6];
- u8 reserved1[10];
-
- /* memory organization block */
- __le32 byte_per_page;
- __le16 spare_bytes_per_page;
- u8 reserved2[6];
- __le32 pages_per_block;
- __le32 blocks_per_lun;
- u8 lun_count;
- u8 addr_cycles;
- u8 bits_per_cell;
- u8 programs_per_page;
- u8 multi_plane_addr;
- u8 multi_plane_op_attr;
- u8 reserved3[38];
-
- /* electrical parameter block */
- __le16 async_sdr_speed_grade;
- __le16 toggle_ddr_speed_grade;
- __le16 sync_ddr_speed_grade;
- u8 async_sdr_features;
- u8 toggle_ddr_features;
- u8 sync_ddr_features;
- __le16 t_prog;
- __le16 t_bers;
- __le16 t_r;
- __le16 t_r_multi_plane;
- __le16 t_ccs;
- __le16 io_pin_capacitance_typ;
- __le16 input_pin_capacitance_typ;
- __le16 clk_pin_capacitance_typ;
- u8 driver_strength_support;
- __le16 t_adl;
- u8 reserved4[36];
-
- /* ECC and endurance block */
- u8 guaranteed_good_blocks;
- __le16 guaranteed_block_endurance;
- struct jedec_ecc_info ecc_info[4];
- u8 reserved5[29];
-
- /* reserved */
- u8 reserved6[148];
-
- /* vendor */
- __le16 vendor_rev_num;
- u8 reserved7[88];
-
- /* CRC for Parameter Page */
- __le16 crc;
-} __packed;
-
/**
* struct nand_parameters - NAND generic parameters from the parameter page
* @model: Model name
--
2.14.1
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