path: root/include/soc/fsl/fsl_ddr_sdram.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright 2008-2016 Freescale Semiconductor, Inc.
 * Copyright 2017-2018 NXP Semiconductor
 */

#ifndef FSL_DDR_MEMCTL_H
#define FSL_DDR_MEMCTL_H

#include <ddr_spd.h>
#include <soc/fsl/fsl_immap.h>

struct common_timing_params {
	/* parameters to constrict */

	unsigned int tckmin_x_ps;
	unsigned int tckmax_ps;
	unsigned int trcd_ps;
	unsigned int trp_ps;
	unsigned int tras_ps;
	unsigned int taamin_ps; /* ddr3, ddr4 */

	unsigned int trfc1_ps; /* ddr4 */
	unsigned int trfc2_ps; /* ddr4 */
	unsigned int trfc4_ps; /* ddr4 */
	unsigned int trrds_ps; /* ddr4 */
	unsigned int trrdl_ps; /* ddr4 */
	unsigned int tccdl_ps; /* ddr4 */
	unsigned int trfc_slr_ps; /* ddr4 */
	unsigned int twtr_ps;	/* !ddr4, maximum = 63750 ps */
	unsigned int trfc_ps;	/* !ddr4, maximum = 255 ns + 256 ns + .75 ns
					   = 511750 ps */

	unsigned int trrd_ps;	/* !ddr4, maximum = 63750 ps */
	unsigned int trtp_ps;	/* !ddr4, byte 38, spd->trtp */
	unsigned int twr_ps;	/* maximum = 63750 ps */
	unsigned int trc_ps;	/* maximum = 254 ns + .75 ns = 254750 ps */

	unsigned int refresh_rate_ps;
	unsigned int extended_op_srt;

	unsigned int tis_ps;	/* ddr1, ddr2, byte 32, spd->ca_setup */
	unsigned int tih_ps;	/* ddr1, ddr2, byte 33, spd->ca_hold */
	unsigned int tds_ps;	/* ddr1, ddr2, byte 34, spd->data_setup */
	unsigned int tdh_ps;	/* ddr1, ddr2, byte 35, spd->data_hold */
	unsigned int tdqsq_max_ps;	/* ddr1, ddr2, byte 44, spd->tdqsq */
	unsigned int tqhs_ps;	/* ddr1, ddr2, byte 45, spd->tqhs */

	unsigned int ndimms_present;
	unsigned int lowest_common_spd_caslat;
	unsigned int highest_common_derated_caslat;
	unsigned int additive_latency;
	unsigned int all_dimms_burst_lengths_bitmask;
	unsigned int all_dimms_registered;
	unsigned int all_dimms_unbuffered;
	unsigned int all_dimms_ecc_capable;

	unsigned long long total_mem;
	unsigned long long base_address;

	/* DDR3 RDIMM */
	unsigned char rcw[16];	/* Register Control Word 0-15 */
};

enum sdram_type {
	SDRAM_TYPE_DDR1 = 2,
	SDRAM_TYPE_DDR2 = 3,
	SDRAM_TYPE_LPDDR1 = 6,
	SDRAM_TYPE_DDR3 = 7,
	SDRAM_TYPE_DDR4 = 5,
};

#define DDR_BL4		4	/* burst length 4 */
#define DDR_BC4		DDR_BL4	/* burst chop for ddr3 */
#define DDR_OTF		6	/* on-the-fly BC4 and BL8 */
#define DDR_BL8		8	/* burst length 8 */

#define DDR3_RTT_OFF		0
#define DDR3_RTT_60_OHM		1 /* RTT_Nom = RZQ/4 */
#define DDR3_RTT_120_OHM	2 /* RTT_Nom = RZQ/2 */
#define DDR3_RTT_40_OHM		3 /* RTT_Nom = RZQ/6 */
#define DDR3_RTT_20_OHM		4 /* RTT_Nom = RZQ/12 */
#define DDR3_RTT_30_OHM		5 /* RTT_Nom = RZQ/8 */

#define DDR4_RTT_OFF		0
#define DDR4_RTT_60_OHM		1	/* RZQ/4 */
#define DDR4_RTT_120_OHM	2	/* RZQ/2 */
#define DDR4_RTT_40_OHM		3	/* RZQ/6 */
#define DDR4_RTT_240_OHM	4	/* RZQ/1 */
#define DDR4_RTT_48_OHM		5	/* RZQ/5 */
#define DDR4_RTT_80_OHM		6	/* RZQ/3 */
#define DDR4_RTT_34_OHM		7	/* RZQ/7 */

#define DDR2_RTT_OFF		0
#define DDR2_RTT_75_OHM		1
#define DDR2_RTT_150_OHM	2
#define DDR2_RTT_50_OHM		3

#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR1	1
#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR2	3

#define FSL_DDR_ODT_NEVER		0x0
#define FSL_DDR_ODT_CS			0x1
#define FSL_DDR_ODT_ALL_OTHER_CS	0x2
#define FSL_DDR_ODT_OTHER_DIMM		0x3
#define FSL_DDR_ODT_ALL			0x4
#define FSL_DDR_ODT_SAME_DIMM		0x5
#define FSL_DDR_ODT_CS_AND_OTHER_DIMM	0x6
#define FSL_DDR_ODT_OTHER_CS_ONSAMEDIMM	0x7

/* define bank(chip select) interleaving mode */
#define FSL_DDR_CS0_CS1			0x40
#define FSL_DDR_CS2_CS3			0x20
#define FSL_DDR_CS0_CS1_AND_CS2_CS3	(FSL_DDR_CS0_CS1 | FSL_DDR_CS2_CS3)
#define FSL_DDR_CS0_CS1_CS2_CS3		(FSL_DDR_CS0_CS1_AND_CS2_CS3 | 0x04)

/* define memory controller interleaving mode */
#define FSL_DDR_CACHE_LINE_INTERLEAVING	0x0
#define FSL_DDR_PAGE_INTERLEAVING	0x1
#define FSL_DDR_BANK_INTERLEAVING	0x2
#define FSL_DDR_SUPERBANK_INTERLEAVING	0x3
#define FSL_DDR_256B_INTERLEAVING	0x8
#define FSL_DDR_3WAY_1KB_INTERLEAVING	0xA
#define FSL_DDR_3WAY_4KB_INTERLEAVING	0xC
#define FSL_DDR_3WAY_8KB_INTERLEAVING	0xD
/* placeholder for 4-way interleaving */
#define FSL_DDR_4WAY_1KB_INTERLEAVING	0x1A
#define FSL_DDR_4WAY_4KB_INTERLEAVING	0x1C
#define FSL_DDR_4WAY_8KB_INTERLEAVING	0x1D

#define SDRAM_CS_CONFIG_EN		0x80000000

/* DDR_SDRAM_CFG - DDR SDRAM Control Configuration
 */
#define SDRAM_CFG_MEM_EN		0x80000000
#define SDRAM_CFG_SREN			0x40000000
#define SDRAM_CFG_ECC_EN		0x20000000
#define SDRAM_CFG_RD_EN			0x10000000
#define SDRAM_CFG_SDRAM_TYPE_DDR1	0x02000000
#define SDRAM_CFG_SDRAM_TYPE_DDR2	0x03000000
#define SDRAM_CFG_SDRAM_TYPE_MASK	0x07000000
#define SDRAM_CFG_SDRAM_TYPE_SHIFT	24
#define SDRAM_CFG_DYN_PWR		0x00200000
#define SDRAM_CFG_DBW_MASK		0x00180000
#define SDRAM_CFG_DBW_SHIFT		19
#define SDRAM_CFG_32_BE			0x00080000
#define SDRAM_CFG_16_BE			0x00100000
#define SDRAM_CFG_8_BE			0x00040000
#define SDRAM_CFG_NCAP			0x00020000
#define SDRAM_CFG_2T_EN			0x00008000
#define SDRAM_CFG_BI			0x00000001

#define SDRAM_CFG2_FRC_SR		0x80000000
#define SDRAM_CFG2_D_INIT		0x00000010
#define SDRAM_CFG2_AP_EN		0x00000020
#define SDRAM_CFG2_ODT_CFG_MASK		0x00600000
#define SDRAM_CFG2_ODT_NEVER		0
#define SDRAM_CFG2_ODT_ONLY_WRITE	1
#define SDRAM_CFG2_ODT_ONLY_READ	2
#define SDRAM_CFG2_ODT_ALWAYS		3

#define SDRAM_INTERVAL_BSTOPRE	0x3FFF
#define TIMING_CFG_2_CPO_MASK	0x0F800000

#define RD_TO_PRE_MASK		0xf
#define RD_TO_PRE_SHIFT		13
#define WR_DATA_DELAY_MASK	0xf
#define WR_DATA_DELAY_SHIFT	9

/* DDR_EOR register */
#define DDR_EOR_RD_REOD_DIS	0x07000000
#define DDR_EOR_WD_REOD_DIS	0x00100000

/* DDR_MD_CNTL */
#define MD_CNTL_MD_EN		0x80000000
#define MD_CNTL_CS_SEL_CS0	0x00000000
#define MD_CNTL_CS_SEL_CS1	0x10000000
#define MD_CNTL_CS_SEL_CS2	0x20000000
#define MD_CNTL_CS_SEL_CS3	0x30000000
#define MD_CNTL_CS_SEL_CS0_CS1	0x40000000
#define MD_CNTL_CS_SEL_CS2_CS3	0x50000000
#define MD_CNTL_MD_SEL_MR	0x00000000
#define MD_CNTL_MD_SEL_EMR	0x01000000
#define MD_CNTL_MD_SEL_EMR2	0x02000000
#define MD_CNTL_MD_SEL_EMR3	0x03000000
#define MD_CNTL_SET_REF		0x00800000
#define MD_CNTL_SET_PRE		0x00400000
#define MD_CNTL_CKE_CNTL_LOW	0x00100000
#define MD_CNTL_CKE_CNTL_HIGH	0x00200000
#define MD_CNTL_WRCW		0x00080000
#define MD_CNTL_MD_VALUE(x)	(x & 0x0000FFFF)
#define MD_CNTL_CS_SEL(x)	(((x) & 0x7) << 28)
#define MD_CNTL_MD_SEL(x)	(((x) & 0xf) << 24)

/* DDR_CDR1 */
#define DDR_CDR1_DHC_EN	0x80000000
#define DDR_CDR1_V0PT9_EN	0x40000000
#define DDR_CDR1_ODT_SHIFT	17
#define DDR_CDR1_ODT_MASK	0x6
#define DDR_CDR2_ODT_MASK	0x1
#define DDR_CDR1_ODT(x) ((x & DDR_CDR1_ODT_MASK) << DDR_CDR1_ODT_SHIFT)
#define DDR_CDR2_ODT(x) (x & DDR_CDR2_ODT_MASK)
#define DDR_CDR2_VREF_OVRD(x)	(0x00008080 | ((((x) - 37) & 0x3F) << 8))
#define DDR_CDR2_VREF_TRAIN_EN	0x00000080
#define DDR_CDR2_VREF_RANGE_2	0x00000040

/* DDR ERR_DISABLE */
#define DDR_ERR_DISABLE_APED	(1 << 8)  /* Address parity error disable */

/* Mode Registers */
#define DDR_MR5_CA_PARITY_LAT_4_CLK	0x1 /* for DDR4-1600/1866/2133 */
#define DDR_MR5_CA_PARITY_LAT_5_CLK	0x2 /* for DDR4-2400 */

/* DEBUG_26 register */
#define DDR_CAS_TO_PRE_SUB_MASK  0x0000f000 /* CAS to preamble subtract value */
#define DDR_CAS_TO_PRE_SUB_SHIFT 12

/* DEBUG_29 register */
#define DDR_TX_BD_DIS	(1 << 10) /* Transmit Bit Deskew Disable */


#define DDR4_CDR_ODT_OFF	0x0
#define DDR4_CDR_ODT_100ohm	0x1
#define DDR4_CDR_ODT_120ohm	0x2
#define DDR4_CDR_ODT_80ohm	0x3
#define DDR4_CDR_ODT_60ohm	0x4
#define DDR4_CDR_ODT_40ohm	0x5
#define DDR4_CDR_ODT_50ohm	0x6
#define DDR4_CDR_ODT_30ohm	0x7

#define DDR123_CDR_ODT_OFF	0x0
#define DDR123_CDR_ODT_120ohm	0x1
#define DDR123_CDR_ODT_180ohm	0x2
#define DDR123_CDR_ODT_75ohm	0x3
#define DDR123_CDR_ODT_110ohm	0x4
#define DDR123_CDR_ODT_60hm	0x5
#define DDR123_CDR_ODT_70ohm	0x6
#define DDR123_CDR_ODT_47ohm	0x7

#define DDR_INIT_ADDR_EXT_UIA	(1 << 31)

#define MAX_CHIP_SELECTS_PER_CTRL 4
#define MAX_DIMM_SLOTS_PER_CTRL 2

/* Record of register values computed */
typedef struct fsl_ddr_cfg_regs_s {
	struct {
		unsigned int bnds;
		unsigned int config;
		unsigned int config_2;
	} cs[MAX_CHIP_SELECTS_PER_CTRL];
	unsigned int timing_cfg_3;
	unsigned int timing_cfg_0;
	unsigned int timing_cfg_1;
	unsigned int timing_cfg_2;
	unsigned int ddr_sdram_cfg;
	unsigned int ddr_sdram_cfg_2;
	unsigned int ddr_sdram_cfg_3;
	unsigned int ddr_sdram_mode;
	unsigned int ddr_sdram_mode_2;
	unsigned int ddr_sdram_mode_3;
	unsigned int ddr_sdram_mode_4;
	unsigned int ddr_sdram_mode_5;
	unsigned int ddr_sdram_mode_6;
	unsigned int ddr_sdram_mode_7;
	unsigned int ddr_sdram_mode_8;
	unsigned int ddr_sdram_mode_9;
	unsigned int ddr_sdram_mode_10;
	unsigned int ddr_sdram_mode_11;
	unsigned int ddr_sdram_mode_12;
	unsigned int ddr_sdram_mode_13;
	unsigned int ddr_sdram_mode_14;
	unsigned int ddr_sdram_mode_15;
	unsigned int ddr_sdram_mode_16;
	unsigned int ddr_sdram_md_cntl;
	unsigned int ddr_sdram_interval;
	unsigned int ddr_data_init;
	unsigned int ddr_sdram_clk_cntl;
	unsigned int ddr_init_addr;
	unsigned int ddr_init_ext_addr;
	unsigned int timing_cfg_4;
	unsigned int timing_cfg_5;
	unsigned int timing_cfg_6;
	unsigned int timing_cfg_7;
	unsigned int timing_cfg_8;
	unsigned int timing_cfg_9;
	unsigned int ddr_zq_cntl;
	unsigned int ddr_wrlvl_cntl;
	unsigned int ddr_wrlvl_cntl_2;
	unsigned int ddr_wrlvl_cntl_3;
	unsigned int ddr_sr_cntr;
	unsigned int ddr_sdram_rcw_1;
	unsigned int ddr_sdram_rcw_2;
	unsigned int ddr_sdram_rcw_3;
	unsigned int ddr_sdram_rcw_4;
	unsigned int ddr_sdram_rcw_5;
	unsigned int ddr_sdram_rcw_6;
	unsigned int dq_map_0;
	unsigned int dq_map_1;
	unsigned int dq_map_2;
	unsigned int dq_map_3;
	unsigned int ddr_eor;
	unsigned int ddr_cdr1;
	unsigned int ddr_cdr2;
	unsigned int err_disable;
	unsigned int err_int_en;
	unsigned int debug[64];
} fsl_ddr_cfg_regs_t;

#define DDR_DATA_BUS_WIDTH_64 0
#define DDR_DATA_BUS_WIDTH_32 1
#define DDR_DATA_BUS_WIDTH_16 2
#define DDR_CSWL_CS0	0x04000001
/*
 * Generalized parameters for memory controller configuration,
 * might be a little specific to the FSL memory controller
 */
typedef struct memctl_options_s {
	enum sdram_type ddrtype;

	/*
	 * Memory organization parameters
	 *
	 * if DIMM is present in the system
	 * where DIMMs are with respect to chip select
	 * where chip selects are with respect to memory boundaries
	 */
	unsigned int registered_dimm_en;    /* use registered DIMM support */

	/* Options local to a Chip Select */
	struct cs_local_opts_s {
		unsigned int auto_precharge;
		unsigned int odt_rd_cfg;
		unsigned int odt_wr_cfg;
		unsigned int odt_rtt_norm;
		unsigned int odt_rtt_wr;
	} cs_local_opts[MAX_CHIP_SELECTS_PER_CTRL];

	/* Special configurations for chip select */
	unsigned int memctl_interleaving;
	unsigned int memctl_interleaving_mode;
	unsigned int ba_intlv_ctl;
	unsigned int addr_hash;

	/* Operational mode parameters */
	unsigned int ecc_mode;	 /* Use ECC? */
	/* Initialize ECC using memory controller? */
	unsigned int ecc_init_using_memctl;
	unsigned int dqs_config;	/* Use DQS? maybe only with DDR2? */
	/* SREN - self-refresh during sleep */
	unsigned int self_refresh_in_sleep;
	/* SR_IE - Self-refresh interrupt enable */
	unsigned int self_refresh_interrupt_en;
	unsigned int dynamic_power;	/* DYN_PWR */
	/* memory data width to use (16-bit, 32-bit, 64-bit) */
	unsigned int data_bus_width;
	unsigned int burst_length;	/* BL4, OTF and BL8 */
	/* On-The-Fly Burst Chop enable */
	unsigned int otf_burst_chop_en;
	/* mirrior DIMMs for DDR3 */
	unsigned int mirrored_dimm;
	unsigned int quad_rank_present;
	unsigned int ap_en;	/* address parity enable for RDIMM/DDR4-UDIMM */
	unsigned int x4_en;	/* enable x4 devices */
	unsigned int package_3ds;

	/* Global Timing Parameters */
	unsigned int cas_latency_override;
	unsigned int cas_latency_override_value;
	unsigned int use_derated_caslat;
	unsigned int additive_latency_override;
	unsigned int additive_latency_override_value;

	unsigned int clk_adjust;		/* */
	unsigned int cpo_override;		/* override timing_cfg_2[CPO]*/
	unsigned int cpo_sample;		/* optimize debug_29[24:31] */
	unsigned int write_data_delay;		/* DQS adjust */

	unsigned int cswl_override;
	unsigned int wrlvl_override;
	unsigned int wrlvl_sample;		/* Write leveling */
	unsigned int wrlvl_start;
	unsigned int wrlvl_ctl_2;
	unsigned int wrlvl_ctl_3;

	unsigned int half_strength_driver_enable;
	unsigned int twot_en;
	unsigned int threet_en;
	unsigned int bstopre;
	unsigned int tfaw_window_four_activates_ps;	/* tFAW --  FOUR_ACT */

	/* Rtt impedance */
	unsigned int rtt_override;		/* rtt_override enable */
	unsigned int rtt_override_value;	/* that is Rtt_Nom for DDR3 */
	unsigned int rtt_wr_override_value;	/* this is Rtt_WR for DDR3 */

	/* Automatic self refresh */
	unsigned int auto_self_refresh_en;
	unsigned int sr_it;
	/* ZQ calibration */
	unsigned int zq_en;
	/* Write leveling */
	unsigned int wrlvl_en;
	/* RCW override for RDIMM */
	unsigned int rcw_override;
	unsigned int rcw_1;
	unsigned int rcw_2;
	unsigned int rcw_3;
	/* control register 1 */
	unsigned int ddr_cdr1;
	unsigned int ddr_cdr2;

	unsigned int trwt_override;
	unsigned int trwt;			/* read-to-write turnaround */
} memctl_options_t;

#define EDC_DATA_PARITY	1
#define EDC_ECC		2
#define EDC_AC_PARITY	4

/* Parameters for a DDR dimm computed from the SPD */
struct dimm_params {

	/* DIMM organization parameters */
	char mpart[19];		/* guaranteed null terminated */

	unsigned int n_ranks;
	unsigned int die_density;
	unsigned long long rank_density;
	unsigned long long capacity;
	unsigned int data_width;
	unsigned int primary_sdram_width;
	unsigned int ec_sdram_width;
	unsigned int registered_dimm;
	unsigned int package_3ds;	/* number of dies in 3DS DIMM */
	unsigned int device_width;	/* x4, x8, x16 components */

	/* SDRAM device parameters */
	unsigned int n_row_addr;
	unsigned int n_col_addr;
	unsigned int edc_config;	/* 0 = none, 1 = parity, 2 = ECC */
	unsigned int bank_addr_bits; /* DDR4 */
	unsigned int bank_group_bits; /* DDR4 */
	unsigned int n_banks_per_sdram_device; /* !DDR4 */
	unsigned int burst_lengths_bitmask;	/* BL=4 bit 2, BL=8 = bit 3 */

	/* used in computing base address of DIMMs */
	unsigned long long base_address;
	/* mirrored DIMMs */
	unsigned int mirrored_dimm;	/* only for ddr3 */

	/* DIMM timing parameters */

	int mtb_ps;	/* medium timebase ps */
	int ftb_10th_ps; /* fine timebase, in 1/10 ps */
	int taa_ps;	/* minimum CAS latency time */
	int tfaw_ps;	/* four active window delay */

	/*
	 * SDRAM clock periods
	 * The range for these are 1000-10000 so a short should be sufficient
	 */
	int tckmin_x_ps;
	int tckmin_x_minus_1_ps;
	int tckmin_x_minus_2_ps;
	int tckmax_ps;

	/* SPD-defined CAS latencies */
	unsigned int caslat_x;
	unsigned int caslat_x_minus_1;
	unsigned int caslat_x_minus_2;

	unsigned int caslat_lowest_derated;	/* Derated CAS latency */

	/* basic timing parameters */
	int trcd_ps;
	int trp_ps;
	int tras_ps;

	int trfc1_ps; /* DDR4 */
	int trfc2_ps; /* DDR4 */
	int trfc4_ps; /* DDR4 */
	int trrds_ps; /* DDR4 */
	int trrdl_ps; /* DDR4 */
	int tccdl_ps; /* DDR4 */
	int trfc_slr_ps; /* DDR4 */
	int twr_ps;	/* !DDR4, maximum = 63750 ps */
	int trfc_ps;	/* max = 255 ns + 256 ns + .75 ns
				       = 511750 ps */
	int trrd_ps;	/* !DDR4, maximum = 63750 ps */
	int twtr_ps;	/* !DDR4, maximum = 63750 ps */
	int trtp_ps;	/* !DDR4, byte 38, spd->trtp */

	int trc_ps;	/* maximum = 254 ns + .75 ns = 254750 ps */

	int refresh_rate_ps;
	int extended_op_srt;

	int tis_ps;	/* DDR1, DDR2, byte 32, spd->ca_setup */
	int tih_ps;	/* DDR1, DDR2, byte 33, spd->ca_hold */
	int tds_ps;	/* DDR1, DDR2, byte 34, spd->data_setup */
	int tdh_ps;	/* DDR1, DDR2, byte 35, spd->data_hold */
	int tdqsq_max_ps;	/* DDR1, DDR2, byte 44, spd->tdqsq */
	int tqhs_ps;	/* DDR1, DDR2, byte 45, spd->tqhs */

	/* DDR3 & DDR4 RDIMM */
	unsigned char rcw[16];	/* Register Control Word 0-15 */
	unsigned int dq_mapping[18]; /* DDR4 */
	unsigned int dq_mapping_ors; /* DDR4 */
};

struct fsl_ddr_controller {
	int num;
	unsigned long ddr_freq;
	struct ccsr_ddr __iomem *base;
	struct spd_eeprom *spd_installed_dimms;
	struct dimm_params *dimm_params;
	memctl_options_t memctl_opts;
	struct common_timing_params common_timing_params;
	fsl_ddr_cfg_regs_t fsl_ddr_config_reg;
	unsigned int dbw_capacity_adjust;
	int chip_selects_per_ctrl;
	int dimm_slots_per_ctrl;
	bool erratum_A009663;
	bool erratum_A008511;
	bool erratum_A009803;
	bool erratum_A010165;
	bool erratum_A009801;
	bool erratum_A004508;
	bool erratum_A008378;
	bool erratum_A009942;
	void (*board_options)(memctl_options_t *popts, struct dimm_params *pdimm,
			      struct fsl_ddr_controller *c);
};

struct fsl_ddr_info {
	struct fsl_ddr_controller *c;
	unsigned int num_ctrls;
	unsigned long long mem_base;
};

phys_size_t fsl_ddr_sdram(struct fsl_ddr_info *pinfo);

#ifdef CONFIG_SYS_FSL_DDR_LE
#define ddr_in32(a)	in_le32(a)
#define ddr_out32(a, v)	out_le32(a, v)
#define ddr_setbits32(a, v)	setbits_le32(a, v)
#define ddr_clrbits32(a, v)	clrbits_le32(a, v)
#define ddr_clrsetbits32(a, clear, set)	clrsetbits_le32(a, clear, set)
#else
#define ddr_in32(a)	in_be32(a)
#define ddr_out32(a, v)	out_be32(a, v)
#define ddr_setbits32(a, v)	setbits_be32(a, v)
#define ddr_clrbits32(a, v)	clrbits_be32(a, v)
#define ddr_clrsetbits32(a, clear, set)	clrsetbits_be32(a, clear, set)
#endif

#endif