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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
* Steven J. Hill <sjhill@realitydiluted.com>
* Thomas Gleixner <tglx@linutronix.de>
*
* Contains all ONFI related definitions
*/
#ifndef __LINUX_MTD_ONFI_H
#define __LINUX_MTD_ONFI_H
#include <linux/types.h>
/* ONFI version bits */
#define ONFI_VERSION_1_0 BIT(1)
#define ONFI_VERSION_2_0 BIT(2)
#define ONFI_VERSION_2_1 BIT(3)
#define ONFI_VERSION_2_2 BIT(4)
#define ONFI_VERSION_2_3 BIT(5)
#define ONFI_VERSION_3_0 BIT(6)
#define ONFI_VERSION_3_1 BIT(7)
#define ONFI_VERSION_3_2 BIT(8)
#define ONFI_VERSION_4_0 BIT(9)
/* ONFI features */
#define ONFI_FEATURE_16_BIT_BUS (1 << 0)
#define ONFI_FEATURE_EXT_PARAM_PAGE (1 << 7)
/* ONFI timing mode, used in both asynchronous and synchronous mode */
#define ONFI_TIMING_MODE_0 (1 << 0)
#define ONFI_TIMING_MODE_1 (1 << 1)
#define ONFI_TIMING_MODE_2 (1 << 2)
#define ONFI_TIMING_MODE_3 (1 << 3)
#define ONFI_TIMING_MODE_4 (1 << 4)
#define ONFI_TIMING_MODE_5 (1 << 5)
#define ONFI_TIMING_MODE_UNKNOWN (1 << 6)
/* ONFI feature number/address */
#define ONFI_FEATURE_NUMBER 256
#define ONFI_FEATURE_ADDR_TIMING_MODE 0x1
/* Vendor-specific feature address (Micron) */
#define ONFI_FEATURE_ADDR_READ_RETRY 0x89
#define ONFI_FEATURE_ON_DIE_ECC 0x90
#define ONFI_FEATURE_ON_DIE_ECC_EN BIT(3)
/* ONFI subfeature parameters length */
#define ONFI_SUBFEATURE_PARAM_LEN 4
/* ONFI optional commands SET/GET FEATURES supported? */
#define ONFI_OPT_CMD_SET_GET_FEATURES (1 << 2)
struct nand_onfi_params {
/* rev info and features block */
/* 'O' 'N' 'F' 'I' */
u8 sig[4];
__le16 revision;
__le16 features;
__le16 opt_cmd;
u8 reserved0[2];
__le16 ext_param_page_length; /* since ONFI 2.1 */
u8 num_of_param_pages; /* since ONFI 2.1 */
u8 reserved1[17];
/* manufacturer information block */
char manufacturer[12];
char model[20];
u8 jedec_id;
__le16 date_code;
u8 reserved2[13];
/* memory organization block */
__le32 byte_per_page;
__le16 spare_bytes_per_page;
__le32 data_bytes_per_ppage;
__le16 spare_bytes_per_ppage;
__le32 pages_per_block;
__le32 blocks_per_lun;
u8 lun_count;
u8 addr_cycles;
u8 bits_per_cell;
__le16 bb_per_lun;
__le16 block_endurance;
u8 guaranteed_good_blocks;
__le16 guaranteed_block_endurance;
u8 programs_per_page;
u8 ppage_attr;
u8 ecc_bits;
u8 interleaved_bits;
u8 interleaved_ops;
u8 reserved3[13];
/* electrical parameter block */
u8 io_pin_capacitance_max;
__le16 async_timing_mode;
__le16 program_cache_timing_mode;
__le16 t_prog;
__le16 t_bers;
__le16 t_r;
__le16 t_ccs;
__le16 src_sync_timing_mode;
u8 src_ssync_features;
__le16 clk_pin_capacitance_typ;
__le16 io_pin_capacitance_typ;
__le16 input_pin_capacitance_typ;
u8 input_pin_capacitance_max;
u8 driver_strength_support;
__le16 t_int_r;
__le16 t_adl;
u8 reserved4[8];
/* vendor */
__le16 vendor_revision;
u8 vendor[88];
__le16 crc;
} __packed;
#define ONFI_CRC_BASE 0x4F4E
/* Extended ECC information Block Definition (since ONFI 2.1) */
struct onfi_ext_ecc_info {
u8 ecc_bits;
u8 codeword_size;
__le16 bb_per_lun;
__le16 block_endurance;
u8 reserved[2];
} __packed;
#define ONFI_SECTION_TYPE_0 0 /* Unused section. */
#define ONFI_SECTION_TYPE_1 1 /* for additional sections. */
#define ONFI_SECTION_TYPE_2 2 /* for ECC information. */
struct onfi_ext_section {
u8 type;
u8 length;
} __packed;
#define ONFI_EXT_SECTION_MAX 8
/* Extended Parameter Page Definition (since ONFI 2.1) */
struct onfi_ext_param_page {
__le16 crc;
u8 sig[4]; /* 'E' 'P' 'P' 'S' */
u8 reserved0[10];
struct onfi_ext_section sections[ONFI_EXT_SECTION_MAX];
/*
* The actual size of the Extended Parameter Page is in
* @ext_param_page_length of nand_onfi_params{}.
* The following are the variable length sections.
* So we do not add any fields below. Please see the ONFI spec.
*/
} __packed;
/**
* struct onfi_params - ONFI specific parameters that will be reused
* @version: ONFI version (BCD encoded), 0 if ONFI is not supported
* @tPROG: Page program time
* @tBERS: Block erase time
* @tR: Page read time
* @tCCS: Change column setup time
* @async_timing_mode: Supported asynchronous timing mode
* @vendor_revision: Vendor specific revision number
* @vendor: Vendor specific data
*/
struct onfi_params {
int version;
u16 tPROG;
u16 tBERS;
u16 tR;
u16 tCCS;
u16 async_timing_mode;
u16 vendor_revision;
u8 vendor[88];
};
#endif /* __LINUX_MTD_ONFI_H */
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