From mboxrd@z Thu Jan 1 00:00:00 1970 From: b32955@freescale.com (Huang Shijie) Date: Wed, 30 Mar 2011 16:40:10 +0800 Subject: [PATCH V3 3/6] MTD : add the database for the NANDs In-Reply-To: <1301474413-28821-1-git-send-email-b32955@freescale.com> References: <1301474413-28821-1-git-send-email-b32955@freescale.com> Message-ID: <1301474413-28821-4-git-send-email-b32955@freescale.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This is a new database for the NANDs which is searched by the id_bytes. Signed-off-by: Huang Shijie --- drivers/mtd/nand/nand_device_info.c | 157 +++++++++++++++++++++++++++++++++++ drivers/mtd/nand/nand_device_info.h | 88 +++++++++++++++++++ 2 files changed, 245 insertions(+), 0 deletions(-) create mode 100644 drivers/mtd/nand/nand_device_info.c create mode 100644 drivers/mtd/nand/nand_device_info.h diff --git a/drivers/mtd/nand/nand_device_info.c b/drivers/mtd/nand/nand_device_info.c new file mode 100644 index 0000000..757ed89 --- /dev/null +++ b/drivers/mtd/nand/nand_device_info.c @@ -0,0 +1,157 @@ +/* + * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ +#include +#include + +#include "nand_device_info.h" + +static const struct nand_device_info samsung_nand[] = { + { + .id = { 0xec, 0xd3, 0x14, 0x25, 0x64, 0xec, 0xd3, 0x14 }, + .id_len = 8, + .desc = "K9G8G08U0M, K9HAG08U1M", + .attr = ATTR(MLC, NAND_BUSWIDTH_8, 1LL * SZ_1G, 128, + 2 * SZ_1K + 64, 8, 512), + }, { + .id = { 0xec, 0xd7, 0xd5, 0x29, 0x38, 0x41, 0xec, 0xd7 }, + .id_len = 8, + .desc = "K9LBG08U0D", + .attr = ATTR(MLC, NAND_BUSWIDTH_8, 4LL * SZ_1G, 128, + 4 * SZ_1K + 218, 16, 512), + }, { + .id = { 0xec, 0xd5, 0x14, 0xb6, 0x74, 0xec, 0xd5, 0x14 }, + .id_len = 8, + .desc = "K9GAG08U0M", + .attr = ATTR(MLC, NAND_BUSWIDTH_8, 2LL * SZ_1G, 128, + 4 * SZ_1K + 218, 16, 512), + }, { + /* end of the table. */ + .id = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + }, +}; + +/* macro to get the id bytes */ +#define ID_GET_MFR_CODE(id) ((id)[0]) + +void nand_device_print_info(struct nand_device_info *info) +{ + unsigned i; + const char *mfr_name; + const char *cell_technology_name; + uint64_t chip_size; + const char *chip_size_units; + unsigned page_size; + unsigned oob_size; + struct nand_attr *attr = &info->attr; + + /* Prepare the manufacturer name. */ + mfr_name = "Unknown"; + for (i = 0; nand_manuf_ids[i].id; i++) { + if (nand_manuf_ids[i].id == ID_GET_MFR_CODE(info->id)) { + mfr_name = nand_manuf_ids[i].name; + break; + } + } + + /* Prepare the name of the cell technology. */ + switch (attr->cell_technology) { + case SLC: + cell_technology_name = "SLC"; + break; + case MLC: + cell_technology_name = "MLC"; + break; + default: + cell_technology_name = "Unknown"; + break; + } + + /* Prepare the chip size. */ + if ((attr->chip_size_in_bytes >= SZ_1G) && + !(attr->chip_size_in_bytes % SZ_1G)) { + chip_size = attr->chip_size_in_bytes / ((uint64_t) SZ_1G); + chip_size_units = "GiB"; + } else if ((attr->chip_size_in_bytes >= SZ_1M) && + !(attr->chip_size_in_bytes % SZ_1M)) { + chip_size = attr->chip_size_in_bytes / ((uint64_t) SZ_1M); + chip_size_units = "MiB"; + } else { + chip_size = attr->chip_size_in_bytes; + chip_size_units = "B"; + } + + /* Prepare the page geometry. */ + page_size = (1 << (fls(attr->page_total_size_in_bytes) - 1)); + oob_size = attr->page_total_size_in_bytes - page_size; + + /* Print the infomation. */ + pr_info("--------------------------------------\n"); + pr_info(" NAND device infomation (RAW)\n"); + pr_info("--------------------------------------\n"); + pr_info("Manufacturer : %s (0x%02x)\n", mfr_name, info->id[0]); + pr_info("Device Code : 0x%02x\n", info->id[1]); + pr_info("Cell Technology : %s\n", cell_technology_name); + pr_info("Chip Size : %llu %s\n", chip_size, chip_size_units); + pr_info("Pages per Block : %u\n", attr->block_size_in_pages); + pr_info("Page Geometry : %u+%u\n", page_size, oob_size); + pr_info("ECC Strength : %u bits\n", attr->ecc_strength_in_bits); + pr_info("ECC Size : %u B\n", attr->ecc_size_in_bytes); + pr_info("Description : %s\n", info->desc); +} + +static struct nand_device_info * __init +search_table(const struct nand_device_info *table, const uint8_t id[]) +{ + struct nand_device_info *info = (struct nand_device_info *)table; + + while (ID_GET_MFR_CODE(info->id)) { + int i; + + /* match all the valid id bytes. Is it too strict? */ + for (i = 0; i < info->id_len; i++) + if (info->id[i] != id[i]) + break; + + /* found it */ + if (i == info->id_len) + return info; + info++; + } + return NULL; +} + +struct nand_device_mfr_info { + uint8_t id; + const struct nand_device_info *table; +}; + +static const struct nand_device_mfr_info nand_device_mfr_directory[] = { + { NAND_MFR_SAMSUNG, samsung_nand }, + { 0, NULL }, +}; + +struct nand_device_info *nand_device_get_info(const uint8_t id[]) +{ + uint8_t mfr_id = ID_GET_MFR_CODE(id); + unsigned i; + + for (i = 0; nand_device_mfr_directory[i].id; i++) { + if (nand_device_mfr_directory[i].id == mfr_id) { + const struct nand_device_info *table; + + table = nand_device_mfr_directory[i].table; + return search_table(table, id); + } + } + return NULL; +} diff --git a/drivers/mtd/nand/nand_device_info.h b/drivers/mtd/nand/nand_device_info.h new file mode 100644 index 0000000..15f688d --- /dev/null +++ b/drivers/mtd/nand/nand_device_info.h @@ -0,0 +1,88 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ +#ifndef __DRIVERS_NAND_DEVICE_INFO_H +#define __DRIVERS_NAND_DEVICE_INFO_H + +enum nand_device_cell_technology { + SLC = 0, + MLC = 1, +}; + +/** + * @cell_technology: The storage cell technology. + * @busw: The bus width of the NAND. + * @chip_size_in_bytes: The total size of the storage behind a single + * chip select, in bytes. Notice that this is *not* + * necessarily the total size of the storage in a + * *package*, which may contain several chips. + * @block_size_in_pages: The number of pages in a block. + * @page_total_size_in_bytes: The total size of a page, in bytes, including + * both the data and the OOB. + * @ecc_strength_in_bits: The strength of the ECC called for by the + * manufacturer, in number of correctable bits. + * @ecc_size_in_bytes: The size of the data block over which the + * manufacturer calls for the given ECC algorithm + * and strength. + */ +struct nand_attr { + /* Technology */ + enum nand_device_cell_technology cell_technology; + + /* bus width */ +#define NAND_BUSWIDTH_8 0 + uint32_t busw; + + /* Geometry */ + uint64_t chip_size_in_bytes; + uint32_t block_size_in_pages; + uint32_t page_total_size_in_bytes; + + /* ECC */ + uint16_t ecc_strength_in_bits; + uint16_t ecc_size_in_bytes; +}; + +#define ID_BYTES (8) +/* + * struct nand_device_info - Information about a single NAND Flash device. + * + * This structure contains all the *essential* information about a NAND Flash + * device, derived from the device's data sheet. + */ +struct nand_device_info { + /* id */ + uint8_t id[ID_BYTES]; + unsigned int id_len; + + /* Description */ + const char *desc; + + /* attribute*/ + struct nand_attr attr; +}; + +/* macro for the NAND attribute */ +#define ATTR(_a, _b, _c, _d, _e, _f, _g) \ + { \ + .cell_technology = (_a), \ + .busw = (_b), \ + .chip_size_in_bytes = (_c), \ + .block_size_in_pages = (_d), \ + .page_total_size_in_bytes = (_e), \ + .ecc_strength_in_bits = (_f), \ + .ecc_size_in_bytes = (_g), \ + } + +struct nand_device_info *nand_device_get_info(const uint8_t id_bytes[]); +void nand_device_print_info(struct nand_device_info *info); +#endif -- 1.7.0.4