/*
 * Copyright 2014 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#ifndef __AMDGPU_GFX_H__
#define __AMDGPU_GFX_H__

/*
 * GFX stuff
 */
#include "clearstate_defs.h"
#include "amdgpu_ring.h"

/* GFX current status */
#define AMDGPU_GFX_NORMAL_MODE			0x00000000L
#define AMDGPU_GFX_SAFE_MODE			0x00000001L
#define AMDGPU_GFX_PG_DISABLED_MODE		0x00000002L
#define AMDGPU_GFX_CG_DISABLED_MODE		0x00000004L
#define AMDGPU_GFX_LBPW_DISABLED_MODE		0x00000008L


struct amdgpu_rlc_funcs {
	void (*enter_safe_mode)(struct amdgpu_device *adev);
	void (*exit_safe_mode)(struct amdgpu_device *adev);
};

struct amdgpu_rlc {
	/* for power gating */
	struct amdgpu_bo	*save_restore_obj;
	uint64_t		save_restore_gpu_addr;
	volatile uint32_t	*sr_ptr;
	const u32               *reg_list;
	u32                     reg_list_size;
	/* for clear state */
	struct amdgpu_bo	*clear_state_obj;
	uint64_t		clear_state_gpu_addr;
	volatile uint32_t	*cs_ptr;
	const struct cs_section_def   *cs_data;
	u32                     clear_state_size;
	/* for cp tables */
	struct amdgpu_bo	*cp_table_obj;
	uint64_t		cp_table_gpu_addr;
	volatile uint32_t	*cp_table_ptr;
	u32                     cp_table_size;

	/* safe mode for updating CG/PG state */
	bool in_safe_mode;
	const struct amdgpu_rlc_funcs *funcs;

	/* for firmware data */
	u32 save_and_restore_offset;
	u32 clear_state_descriptor_offset;
	u32 avail_scratch_ram_locations;
	u32 reg_restore_list_size;
	u32 reg_list_format_start;
	u32 reg_list_format_separate_start;
	u32 starting_offsets_start;
	u32 reg_list_format_size_bytes;
	u32 reg_list_size_bytes;
	u32 reg_list_format_direct_reg_list_length;
	u32 save_restore_list_cntl_size_bytes;
	u32 save_restore_list_gpm_size_bytes;
	u32 save_restore_list_srm_size_bytes;

	u32 *register_list_format;
	u32 *register_restore;
	u8 *save_restore_list_cntl;
	u8 *save_restore_list_gpm;
	u8 *save_restore_list_srm;

	bool is_rlc_v2_1;
};

#define AMDGPU_MAX_COMPUTE_QUEUES KGD_MAX_QUEUES

struct amdgpu_mec {
	struct amdgpu_bo	*hpd_eop_obj;
	u64			hpd_eop_gpu_addr;
	struct amdgpu_bo	*mec_fw_obj;
	u64			mec_fw_gpu_addr;
	u32 num_mec;
	u32 num_pipe_per_mec;
	u32 num_queue_per_pipe;
	void			*mqd_backup[AMDGPU_MAX_COMPUTE_RINGS + 1];

	/* These are the resources for which amdgpu takes ownership */
	DECLARE_BITMAP(queue_bitmap, AMDGPU_MAX_COMPUTE_QUEUES);
};

struct amdgpu_kiq {
	u64			eop_gpu_addr;
	struct amdgpu_bo	*eop_obj;
	spinlock_t              ring_lock;
	struct amdgpu_ring	ring;
	struct amdgpu_irq_src	irq;
};

/*
 * GPU scratch registers structures, functions & helpers
 */
struct amdgpu_scratch {
	unsigned		num_reg;
	uint32_t                reg_base;
	uint32_t		free_mask;
};

/*
 * GFX configurations
 */
#define AMDGPU_GFX_MAX_SE 4
#define AMDGPU_GFX_MAX_SH_PER_SE 2

struct amdgpu_rb_config {
	uint32_t rb_backend_disable;
	uint32_t user_rb_backend_disable;
	uint32_t raster_config;
	uint32_t raster_config_1;
};

struct gb_addr_config {
	uint16_t pipe_interleave_size;
	uint8_t num_pipes;
	uint8_t max_compress_frags;
	uint8_t num_banks;
	uint8_t num_se;
	uint8_t num_rb_per_se;
};

struct amdgpu_gfx_config {
	unsigned max_shader_engines;
	unsigned max_tile_pipes;
	unsigned max_cu_per_sh;
	unsigned max_sh_per_se;
	unsigned max_backends_per_se;
	unsigned max_texture_channel_caches;
	unsigned max_gprs;
	unsigned max_gs_threads;
	unsigned max_hw_contexts;
	unsigned sc_prim_fifo_size_frontend;
	unsigned sc_prim_fifo_size_backend;
	unsigned sc_hiz_tile_fifo_size;
	unsigned sc_earlyz_tile_fifo_size;

	unsigned num_tile_pipes;
	unsigned backend_enable_mask;
	unsigned mem_max_burst_length_bytes;
	unsigned mem_row_size_in_kb;
	unsigned shader_engine_tile_size;
	unsigned num_gpus;
	unsigned multi_gpu_tile_size;
	unsigned mc_arb_ramcfg;
	unsigned gb_addr_config;
	unsigned num_rbs;
	unsigned gs_vgt_table_depth;
	unsigned gs_prim_buffer_depth;

	uint32_t tile_mode_array[32];
	uint32_t macrotile_mode_array[16];

	struct gb_addr_config gb_addr_config_fields;
	struct amdgpu_rb_config rb_config[AMDGPU_GFX_MAX_SE][AMDGPU_GFX_MAX_SH_PER_SE];

	/* gfx configure feature */
	uint32_t double_offchip_lds_buf;
	/* cached value of DB_DEBUG2 */
	uint32_t db_debug2;
};

struct amdgpu_cu_info {
	uint32_t simd_per_cu;
	uint32_t max_waves_per_simd;
	uint32_t wave_front_size;
	uint32_t max_scratch_slots_per_cu;
	uint32_t lds_size;

	/* total active CU number */
	uint32_t number;
	uint32_t ao_cu_mask;
	uint32_t ao_cu_bitmap[4][4];
	uint32_t bitmap[4][4];
};

struct amdgpu_gfx_funcs {
	/* get the gpu clock counter */
	uint64_t (*get_gpu_clock_counter)(struct amdgpu_device *adev);
	void (*select_se_sh)(struct amdgpu_device *adev, u32 se_num,
			     u32 sh_num, u32 instance);
	void (*read_wave_data)(struct amdgpu_device *adev, uint32_t simd,
			       uint32_t wave, uint32_t *dst, int *no_fields);
	void (*read_wave_vgprs)(struct amdgpu_device *adev, uint32_t simd,
				uint32_t wave, uint32_t thread, uint32_t start,
				uint32_t size, uint32_t *dst);
	void (*read_wave_sgprs)(struct amdgpu_device *adev, uint32_t simd,
				uint32_t wave, uint32_t start, uint32_t size,
				uint32_t *dst);
	void (*select_me_pipe_q)(struct amdgpu_device *adev, u32 me, u32 pipe,
				 u32 queue);
};

struct amdgpu_ngg_buf {
	struct amdgpu_bo	*bo;
	uint64_t		gpu_addr;
	uint32_t		size;
	uint32_t		bo_size;
};

enum {
	NGG_PRIM = 0,
	NGG_POS,
	NGG_CNTL,
	NGG_PARAM,
	NGG_BUF_MAX
};

struct amdgpu_ngg {
	struct amdgpu_ngg_buf	buf[NGG_BUF_MAX];
	uint32_t		gds_reserve_addr;
	uint32_t		gds_reserve_size;
	bool			init;
};

struct sq_work {
	struct work_struct	work;
	unsigned ih_data;
};

struct amdgpu_gfx {
	struct mutex			gpu_clock_mutex;
	struct amdgpu_gfx_config	config;
	struct amdgpu_rlc		rlc;
	struct amdgpu_mec		mec;
	struct amdgpu_kiq		kiq;
	struct amdgpu_scratch		scratch;
	const struct firmware		*me_fw;	/* ME firmware */
	uint32_t			me_fw_version;
	const struct firmware		*pfp_fw; /* PFP firmware */
	uint32_t			pfp_fw_version;
	const struct firmware		*ce_fw;	/* CE firmware */
	uint32_t			ce_fw_version;
	const struct firmware		*rlc_fw; /* RLC firmware */
	uint32_t			rlc_fw_version;
	const struct firmware		*mec_fw; /* MEC firmware */
	uint32_t			mec_fw_version;
	const struct firmware		*mec2_fw; /* MEC2 firmware */
	uint32_t			mec2_fw_version;
	uint32_t			me_feature_version;
	uint32_t			ce_feature_version;
	uint32_t			pfp_feature_version;
	uint32_t			rlc_feature_version;
	uint32_t			rlc_srlc_fw_version;
	uint32_t			rlc_srlc_feature_version;
	uint32_t			rlc_srlg_fw_version;
	uint32_t			rlc_srlg_feature_version;
	uint32_t			rlc_srls_fw_version;
	uint32_t			rlc_srls_feature_version;
	uint32_t			mec_feature_version;
	uint32_t			mec2_feature_version;
	bool				mec_fw_write_wait;
	bool				me_fw_write_wait;
	struct amdgpu_ring		gfx_ring[AMDGPU_MAX_GFX_RINGS];
	unsigned			num_gfx_rings;
	struct amdgpu_ring		compute_ring[AMDGPU_MAX_COMPUTE_RINGS];
	unsigned			num_compute_rings;
	struct amdgpu_irq_src		eop_irq;
	struct amdgpu_irq_src		priv_reg_irq;
	struct amdgpu_irq_src		priv_inst_irq;
	struct amdgpu_irq_src		cp_ecc_error_irq;
	struct amdgpu_irq_src		sq_irq;
	struct sq_work			sq_work;

	/* gfx status */
	uint32_t			gfx_current_status;
	/* ce ram size*/
	unsigned			ce_ram_size;
	struct amdgpu_cu_info		cu_info;
	const struct amdgpu_gfx_funcs	*funcs;

	/* reset mask */
	uint32_t                        grbm_soft_reset;
	uint32_t                        srbm_soft_reset;

	/* NGG */
	struct amdgpu_ngg		ngg;

	/* gfx off */
	bool                            gfx_off_state; /* true: enabled, false: disabled */
	struct mutex                    gfx_off_mutex;
	uint32_t                        gfx_off_req_count; /* default 1, enable gfx off: dec 1, disable gfx off: add 1 */
	struct delayed_work             gfx_off_delay_work;

	/* pipe reservation */
	struct mutex			pipe_reserve_mutex;
	DECLARE_BITMAP			(pipe_reserve_bitmap, AMDGPU_MAX_COMPUTE_QUEUES);
};

#define amdgpu_gfx_get_gpu_clock_counter(adev) (adev)->gfx.funcs->get_gpu_clock_counter((adev))
#define amdgpu_gfx_select_se_sh(adev, se, sh, instance) (adev)->gfx.funcs->select_se_sh((adev), (se), (sh), (instance))
#define amdgpu_gfx_select_me_pipe_q(adev, me, pipe, q) (adev)->gfx.funcs->select_me_pipe_q((adev), (me), (pipe), (q))

/**
 * amdgpu_gfx_create_bitmask - create a bitmask
 *
 * @bit_width: length of the mask
 *
 * create a variable length bit mask.
 * Returns the bitmask.
 */
static inline u32 amdgpu_gfx_create_bitmask(u32 bit_width)
{
	return (u32)((1ULL << bit_width) - 1);
}

int amdgpu_gfx_scratch_get(struct amdgpu_device *adev, uint32_t *reg);
void amdgpu_gfx_scratch_free(struct amdgpu_device *adev, uint32_t reg);

void amdgpu_gfx_parse_disable_cu(unsigned *mask, unsigned max_se,
				 unsigned max_sh);

int amdgpu_gfx_kiq_init_ring(struct amdgpu_device *adev,
			     struct amdgpu_ring *ring,
			     struct amdgpu_irq_src *irq);

void amdgpu_gfx_kiq_free_ring(struct amdgpu_ring *ring,
			      struct amdgpu_irq_src *irq);

void amdgpu_gfx_kiq_fini(struct amdgpu_device *adev);
int amdgpu_gfx_kiq_init(struct amdgpu_device *adev,
			unsigned hpd_size);

int amdgpu_gfx_compute_mqd_sw_init(struct amdgpu_device *adev,
				   unsigned mqd_size);
void amdgpu_gfx_compute_mqd_sw_fini(struct amdgpu_device *adev);

void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev);
int amdgpu_gfx_queue_to_bit(struct amdgpu_device *adev, int mec,
			    int pipe, int queue);
void amdgpu_gfx_bit_to_queue(struct amdgpu_device *adev, int bit,
			     int *mec, int *pipe, int *queue);
bool amdgpu_gfx_is_mec_queue_enabled(struct amdgpu_device *adev, int mec,
				     int pipe, int queue);
void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable);

#endif