include/drivers/cadence/cdns_nand.h

/*
 * Copyright (c) 2022-2023, Intel Corporation. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#ifndef CDN_NAND_H
#define CDN_NAND_H

#include <drivers/cadence/cdns_combo_phy.h>

/* NAND flash device information */
typedef struct cnf_dev_info {
	uint8_t type;
	uint8_t nluns;
	uint8_t sector_cnt;
	uint16_t npages_per_block;
	uint16_t sector_size;
	uint16_t last_sector_size;
	uint16_t page_size;
	uint16_t spare_size;
	uint32_t nblocks_per_lun;
	uint32_t block_size;
	unsigned long long total_size;
} cnf_dev_info_t;

/* Shared Macros */

/* Default values */
#define CNF_DEF_VOL_ID					0
#define CNF_DEF_DEVICE					0
#define CNF_DEF_TRD					0
#define CNF_READ_SINGLE_PAGE				1
#define CNF_DEF_DELAY_US				500
#define CNF_READ_INT_DELAY_US				10

/* Work modes */
#define CNF_WORK_MODE_CDMA				0
#define CNF_WORK_MODE_PIO				1

/* Command types */
#define CNF_CT_SET_FEATURE				0x0100
#define CNF_CT_RESET_ASYNC				0x1100
#define CNF_CT_RESET_SYNC				0x1101
#define CNF_CT_RESET_LUN				0x1102
#define CNF_CT_ERASE					0x1000
#define CNF_CT_PAGE_PROGRAM				0x2100
#define CNF_CT_PAGE_READ				0x2200

/* Interrupts enable or disable */
#define CNF_INT_EN					1
#define CNF_INT_DIS					0

/* Device types */
#define CNF_DT_UNKNOWN					0x00
#define CNF_DT_ONFI					0x01
#define CNF_DT_JEDEC					0x02
#define CNF_DT_LEGACY					0x03

/* Command and status registers */
#define CNF_CMDREG_REG_BASE				SOCFPGA_NAND_REG_BASE

/* DMA maximum burst size 0-127*/
#define CNF_DMA_BURST_SIZE_MAX				127

/* DMA settings register field offsets */
#define CNF_DMA_SETTINGS_BURST				0
#define CNF_DMA_SETTINGS_OTE				16
#define CNF_DMA_SETTINGS_SDMA_ERR			17

#define CNF_DMA_MASTER_SEL				1
#define CNF_DMA_SLAVE_SEL				0

/* DMA FIFO trigger level register field offsets */
#define CNF_FIFO_TLEVEL_POS				0
#define CNF_FIFO_TLEVEL_DMA_SIZE			16
#define CNF_DMA_PREFETCH_SIZE				(1024 / 8)

#define CNF_GET_CTRL_BUSY(x)				(x & (1 << 8))
#define CNF_GET_INIT_COMP(x)				(x & (1 << 9))

/* Command register0 field offsets */
#define CNF_CMDREG0_CT					30
#define CNF_CMDREG0_TRD					24
#define CNF_CMDREG0_INTR				20
#define CNF_CMDREG0_DMA					21
#define CNF_CMDREG0_VOL					16
#define CNF_CMDREG0_CMD					0
#define CNF_CMDREG4_MEM					24

/* Command status register field offsets */
#define CNF_ECMD					BIT(0)
#define CNF_EECC					BIT(1)
#define CNF_EMAX					BIT(2)
#define CNF_EDEV					BIT(12)
#define CNF_EDQS					BIT(13)
#define CNF_EFAIL					BIT(14)
#define CNF_CMPLT					BIT(15)
#define CNF_EBUS					BIT(16)
#define CNF_EDI						BIT(17)
#define CNF_EPAR					BIT(18)
#define CNF_ECTX					BIT(19)
#define CNF_EPRO					BIT(20)
#define CNF_EIDX					BIT(24)

#define CNF_CMDREG_CMD_REG0				0x00
#define CNF_CMDREG_CMD_REG1				0x04
#define CNF_CMDREG_CMD_REG2				0x08
#define CNF_CMDREG_CMD_REG3				0x0C
#define CNF_CMDREG_CMD_STAT_PTR				0x10
#define CNF_CMDREG_CMD_STAT				0x14
#define CNF_CMDREG_CMD_REG4				0x20
#define CNF_CMDREG_CTRL_STATUS				0x118
#define CNF_CMDREG_TRD_STATUS				0x120

#define CNF_CMDREG(_reg)				(CNF_CMDREG_REG_BASE \
							+ (CNF_CMDREG_##_reg))

/* Controller configuration registers */
#define CNF_LSB16_MASK					0xFFFF
#define CNF_GET_NPAGES_PER_BLOCK(x)			(x & CNF_LSB16_MASK)

#define CNF_GET_SCTR_SIZE(x)				(x & CNF_LSB16_MASK)
#define CNF_GET_LAST_SCTR_SIZE(x)			((x >> 16) & CNF_LSB16_MASK)

#define CNF_GET_PAGE_SIZE(x)				(x & CNF_LSB16_MASK)
#define CNF_GET_SPARE_SIZE(x)				((x >> 16) & CNF_LSB16_MASK)

#define CNF_CTRLCFG_REG_BASE				0x10B80400
#define CNF_CTRLCFG_TRANS_CFG0				0x00
#define CNF_CTRLCFG_TRANS_CFG1				0x04
#define CNF_CTRLCFG_LONG_POLL				0x08
#define CNF_CTRLCFG_SHORT_POLL				0x0C
#define CNF_CTRLCFG_DEV_STAT				0x10
#define CNF_CTRLCFG_DEV_LAYOUT				0x24
#define CNF_CTRLCFG_ECC_CFG0				0x28
#define CNF_CTRLCFG_ECC_CFG1				0x2C
#define CNF_CTRLCFG_MULTIPLANE_CFG			0x34
#define CNF_CTRLCFG_CACHE_CFG				0x38
#define CNF_CTRLCFG_DMA_SETTINGS			0x3C
#define CNF_CTRLCFG_FIFO_TLEVEL				0x54

#define CNF_CTRLCFG(_reg)				(CNF_CTRLCFG_REG_BASE \
							+ (CNF_CTRLCFG_##_reg))

/* Data integrity registers */
#define CNF_DI_PAR_EN					0
#define CNF_DI_CRC_EN					1

#define CNF_DI_REG_BASE					0x10B80700
#define CNF_DI_CONTROL					0x00
#define CNF_DI_INJECT0					0x04
#define CNF_DI_INJECT1					0x08
#define CNF_DI_ERR_REG_ADDR				0x0C
#define CNF_DI_INJECT2					0x10

#define CNF_DI(_reg)					(CNF_DI_REG_BASE \
							+ (CNF_DI_##_reg))

/* Controller parameter registers */
#define CNF_NTHREADS_MASK				0x07
#define CNF_GET_NLUNS(x)				(x & 0xFF)
#define CNF_GET_DEV_TYPE(x)				((x >> 30) & 0x03)
#define CNF_GET_NTHREADS(x)				(1 << (x & CNF_NTHREADS_MASK))

#define CNF_CTRLPARAM_REG_BASE				0x10B80800
#define CNF_CTRLPARAM_VERSION				0x00
#define CNF_CTRLPARAM_FEATURE				0x04
#define CNF_CTRLPARAM_MFR_ID				0x08
#define CNF_CTRLPARAM_DEV_AREA				0x0C
#define CNF_CTRLPARAM_DEV_PARAMS0			0x10
#define CNF_CTRLPARAM_DEV_PARAMS1			0x14
#define CNF_CTRLPARAM_DEV_FEATUERS			0x18
#define CNF_CTRLPARAM_DEV_BLOCKS_PLUN			0x1C

#define CNF_CTRLPARAM(_reg)				(CNF_CTRLPARAM_REG_BASE \
							+ (CNF_CTRLPARAM_##_reg))

/* Protection mechanism registers */
#define CNF_PROT_REG_BASE				0x10B80900
#define CNF_PROT_CTRL0					0x00
#define CNF_PROT_DOWN0					0x04
#define CNF_PROT_UP0					0x08
#define CNF_PROT_CTRL1					0x10
#define CNF_PROT_DOWN1					0x14
#define CNF_PROT_UP1					0x18

#define CNF_PROT(_reg)					(CNF_PROT_REG_BASE \
							+ (CNF_PROT_##_reg))

/* Mini controller registers */
#define CNF_MINICTRL_REG_BASE				0x10B81000

/* Operation work modes */
#define CNF_OPR_WORK_MODE_SDR				0
#define CNF_OPR_WORK_MODE_NVDDR				1
#define CNF_OPR_WORK_MODE_TOGGLE_NVDDR2_3		2
#define CNF_OPR_WORK_MODE_RES				3

/* Mini controller common settings register field offsets */
#define CNF_CMN_SETTINGS_WR_WUP				20
#define CNF_CMN_SETTINGS_RD_WUP				16
#define CNF_CMN_SETTINGS_DEV16				8
#define CNF_CMN_SETTINGS_OPR				0

/* Async mode register field offsets */
#define CNF_ASYNC_TIMINGS_TRH				24
#define CNF_ASYNC_TIMINGS_TRP				16
#define CNF_ASYNC_TIMINGS_TWH				8
#define CNF_ASYNC_TIMINGS_TWP				0

/* Mini controller DLL PHY controller register field offsets */
#define CNF_DLL_PHY_RST_N				24
#define CNF_DLL_PHY_EXT_WR_MODE				17
#define CNF_DLL_PHY_EXT_RD_MODE				16

#define CNF_MINICTRL_WP_SETTINGS			0x00
#define CNF_MINICTRL_RBN_SETTINGS			0x04
#define CNF_MINICTRL_CMN_SETTINGS			0x08
#define CNF_MINICTRL_SKIP_BYTES_CFG			0x0C
#define CNF_MINICTRL_SKIP_BYTES_OFFSET			0x10
#define CNF_MINICTRL_TOGGLE_TIMINGS0			0x14
#define CNF_MINICTRL_TOGGLE_TIMINGS1			0x18
#define CNF_MINICTRL_ASYNC_TOGGLE_TIMINGS		0x1C
#define CNF_MINICTRL_SYNC_TIMINGS			0x20
#define CNF_MINICTRL_DLL_PHY_CTRL			0x34

#define CNF_MINICTRL(_reg)				(CNF_MINICTRL_REG_BASE \
							+ (CNF_MINICTRL_##_reg))

/*
 * @brief Nand IO MTD initialization routine
 *
 * @total_size: [out] Total size of the NAND flash device
 * @erase_size: [out] Minimum erase size of the NAND flash device
 * Return: 0 on success, a negative errno on failure
 */
int cdns_nand_init_mtd(unsigned long long *total_size,
						unsigned int *erase_size);

/*
 * @brief Read bytes from the NAND flash device
 *
 * @offset: Byte offset to read from in device
 * @buffer: [out] Bytes read from device
 * @length: Number of bytes to read
 * @out_length: [out] Number of bytes read from device
 * Return: 0 on success, a negative errno on failure
 */
int cdns_nand_read(unsigned int offset, uintptr_t buffer,
					size_t length, size_t *out_length);

/* NAND Flash Controller/Host initialization */
int cdns_nand_host_init(void);

#endif