/*
 * Copyright 2018 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_SDMA_H__
#define __AMDGPU_SDMA_H__
#include "amdgpu_ras.h"

/* max number of IP instances */
#define AMDGPU_MAX_SDMA_INSTANCES		16

enum amdgpu_sdma_irq {
	AMDGPU_SDMA_IRQ_INSTANCE0  = 0,
	AMDGPU_SDMA_IRQ_INSTANCE1,
	AMDGPU_SDMA_IRQ_INSTANCE2,
	AMDGPU_SDMA_IRQ_INSTANCE3,
	AMDGPU_SDMA_IRQ_INSTANCE4,
	AMDGPU_SDMA_IRQ_INSTANCE5,
	AMDGPU_SDMA_IRQ_INSTANCE6,
	AMDGPU_SDMA_IRQ_INSTANCE7,
	AMDGPU_SDMA_IRQ_INSTANCE8,
	AMDGPU_SDMA_IRQ_INSTANCE9,
	AMDGPU_SDMA_IRQ_INSTANCE10,
	AMDGPU_SDMA_IRQ_INSTANCE11,
	AMDGPU_SDMA_IRQ_INSTANCE12,
	AMDGPU_SDMA_IRQ_INSTANCE13,
	AMDGPU_SDMA_IRQ_INSTANCE14,
	AMDGPU_SDMA_IRQ_INSTANCE15,
	AMDGPU_SDMA_IRQ_LAST
};

#define NUM_SDMA(x) hweight32(x)

struct amdgpu_sdma_csa_info {
	u32 size;
	u32 alignment;
};

struct amdgpu_sdma_funcs {
	int (*stop_kernel_queue)(struct amdgpu_ring *ring);
	int (*start_kernel_queue)(struct amdgpu_ring *ring);
	int (*soft_reset_kernel_queue)(struct amdgpu_device *adev, u32 instance_id);
};

struct amdgpu_sdma_instance {
	/* SDMA firmware */
	const struct firmware	*fw;
	uint32_t		fw_version;
	uint32_t		feature_version;

	struct amdgpu_ring	ring;
	struct amdgpu_ring	page;
	bool			burst_nop;
	union {
	    uint32_t		aid_id;
	    uint32_t		xcc_id;
	};

	struct amdgpu_bo	*sdma_fw_obj;
	uint64_t		sdma_fw_gpu_addr;
	uint32_t		*sdma_fw_ptr;
	struct mutex		engine_reset_mutex;
	/* track guilty state of GFX and PAGE queues */
	bool			gfx_guilty;
	bool			page_guilty;
	const struct amdgpu_sdma_funcs   *funcs;
};

struct amdgpu_sdma_ras {
	struct amdgpu_ras_block_object ras_block;
};

struct amdgpu_sdma {
	struct amdgpu_sdma_instance instance[AMDGPU_MAX_SDMA_INSTANCES];
	struct amdgpu_irq_src	trap_irq;
	struct amdgpu_irq_src	illegal_inst_irq;
	struct amdgpu_irq_src	fence_irq;
	struct amdgpu_irq_src	ecc_irq;
	struct amdgpu_irq_src	vm_hole_irq;
	struct amdgpu_irq_src	doorbell_invalid_irq;
	struct amdgpu_irq_src	pool_timeout_irq;
	struct amdgpu_irq_src	srbm_write_irq;
	struct amdgpu_irq_src	ctxt_empty_irq;

	int			num_instances;
	uint32_t 		sdma_mask;
	union {
	    int			num_inst_per_aid;
	    int			num_inst_per_xcc;
	};
	uint32_t                    srbm_soft_reset;
	bool			has_page_queue;
	struct ras_common_if	*ras_if;
	struct amdgpu_sdma_ras	*ras;
	uint32_t		*ip_dump;
	uint32_t 		supported_reset;
	struct list_head	reset_callback_list;
	bool			no_user_submission;
	bool			disable_uq;
	void (*get_csa_info)(struct amdgpu_device *adev,
			     struct amdgpu_sdma_csa_info *csa_info);
};

/*
 * Provided by hw blocks that can move/clear data.  e.g., gfx or sdma
 * But currently, we use sdma to move data.
 */
struct amdgpu_buffer_funcs {
	/* maximum bytes in a single operation */
	uint32_t	copy_max_bytes;

	/* number of dw to reserve per operation */
	unsigned	copy_num_dw;

	/* used for buffer migration */
	void (*emit_copy_buffer)(struct amdgpu_ib *ib,
				 /* src addr in bytes */
				 uint64_t src_offset,
				 /* dst addr in bytes */
				 uint64_t dst_offset,
				 /* number of byte to transfer */
				 uint32_t byte_count,
				 uint32_t copy_flags);

	/* maximum bytes in a single operation */
	uint32_t	fill_max_bytes;

	/* number of dw to reserve per operation */
	unsigned	fill_num_dw;

	/* used for buffer clearing */
	void (*emit_fill_buffer)(struct amdgpu_ib *ib,
				 /* value to write to memory */
				 uint32_t src_data,
				 /* dst addr in bytes */
				 uint64_t dst_offset,
				 /* number of byte to fill */
				 uint32_t byte_count);
};

int amdgpu_sdma_reset_engine(struct amdgpu_device *adev, uint32_t instance_id,
			     bool caller_handles_kernel_queues);

#define amdgpu_emit_copy_buffer(adev, ib, s, d, b, t) (adev)->mman.buffer_funcs->emit_copy_buffer((ib),  (s), (d), (b), (t))
#define amdgpu_emit_fill_buffer(adev, ib, s, d, b) (adev)->mman.buffer_funcs->emit_fill_buffer((ib), (s), (d), (b))

struct amdgpu_sdma_instance *
amdgpu_sdma_get_instance_from_ring(struct amdgpu_ring *ring);
int amdgpu_sdma_get_index_from_ring(struct amdgpu_ring *ring, uint32_t *index);
uint64_t amdgpu_sdma_get_csa_mc_addr(struct amdgpu_ring *ring, unsigned vmid);
int amdgpu_sdma_ras_late_init(struct amdgpu_device *adev,
			      struct ras_common_if *ras_block);
int amdgpu_sdma_process_ras_data_cb(struct amdgpu_device *adev,
		void *err_data,
		struct amdgpu_iv_entry *entry);
int amdgpu_sdma_process_ecc_irq(struct amdgpu_device *adev,
				      struct amdgpu_irq_src *source,
				      struct amdgpu_iv_entry *entry);
int amdgpu_sdma_init_microcode(struct amdgpu_device *adev, u32 instance,
			       bool duplicate);
void amdgpu_sdma_destroy_inst_ctx(struct amdgpu_device *adev,
        bool duplicate);
int amdgpu_sdma_ras_sw_init(struct amdgpu_device *adev);
void amdgpu_debugfs_sdma_sched_mask_init(struct amdgpu_device *adev);
int amdgpu_sdma_sysfs_reset_mask_init(struct amdgpu_device *adev);
void amdgpu_sdma_sysfs_reset_mask_fini(struct amdgpu_device *adev);
bool amdgpu_sdma_is_shared_inv_eng(struct amdgpu_device *adev, struct amdgpu_ring *ring);
struct amdgpu_ring *amdgpu_sdma_get_shared_ring(struct amdgpu_device *adev,
	struct amdgpu_ring *ring);
#endif