/* * Copyright 2016 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. * * Authors: Christian König */#ifndef __AMDGPU_RING_H__#define __AMDGPU_RING_H__ #include <drm/amdgpu_drm.h>#include <drm/gpu_scheduler.h>#include <drm/drm_print.h> /* max number of rings */#define AMDGPU_MAX_RINGS		28#define AMDGPU_MAX_HWIP_RINGS		8#define AMDGPU_MAX_GFX_RINGS		2#define AMDGPU_MAX_COMPUTE_RINGS	8#define AMDGPU_MAX_VCE_RINGS		3#define AMDGPU_MAX_UVD_ENC_RINGS	2 #define AMDGPU_RING_PRIO_DEFAULT	1#define AMDGPU_RING_PRIO_MAX		AMDGPU_GFX_PIPE_PRIO_MAX /* some special values for the owner field */#define AMDGPU_FENCE_OWNER_UNDEFINED	((void *)0ul)#define AMDGPU_FENCE_OWNER_VM		((void *)1ul)#define AMDGPU_FENCE_OWNER_KFD		((void *)2ul) #define AMDGPU_FENCE_FLAG_64BIT         (1 << 0)#define AMDGPU_FENCE_FLAG_INT           (1 << 1)#define AMDGPU_FENCE_FLAG_TC_WB_ONLY    (1 << 2) #define to_amdgpu_ring(s) container_of((s), struct amdgpu_ring, sched) #define AMDGPU_IB_POOL_SIZE	(1024 * 1024) enum amdgpu_ring_type {	AMDGPU_RING_TYPE_GFX		= AMDGPU_HW_IP_GFX,	AMDGPU_RING_TYPE_COMPUTE	= AMDGPU_HW_IP_COMPUTE,	AMDGPU_RING_TYPE_SDMA		= AMDGPU_HW_IP_DMA,	AMDGPU_RING_TYPE_UVD		= AMDGPU_HW_IP_UVD,	AMDGPU_RING_TYPE_VCE		= AMDGPU_HW_IP_VCE,	AMDGPU_RING_TYPE_UVD_ENC	= AMDGPU_HW_IP_UVD_ENC,	AMDGPU_RING_TYPE_VCN_DEC	= AMDGPU_HW_IP_VCN_DEC,	AMDGPU_RING_TYPE_VCN_ENC	= AMDGPU_HW_IP_VCN_ENC,	AMDGPU_RING_TYPE_VCN_JPEG	= AMDGPU_HW_IP_VCN_JPEG,	AMDGPU_RING_TYPE_KIQ,	AMDGPU_RING_TYPE_MES}; enum amdgpu_ib_pool_type {	/* Normal submissions to the top of the pipeline. */	AMDGPU_IB_POOL_DELAYED,	/* Immediate submissions to the bottom of the pipeline. */	AMDGPU_IB_POOL_IMMEDIATE,	/* Direct submission to the ring buffer during init and reset. */	AMDGPU_IB_POOL_DIRECT, 	AMDGPU_IB_POOL_MAX}; struct amdgpu_device;struct amdgpu_ring;struct amdgpu_ib;struct amdgpu_cs_parser;struct amdgpu_job; struct amdgpu_sched {	u32				num_scheds;	struct drm_gpu_scheduler	*sched[AMDGPU_MAX_HWIP_RINGS];}; /* * Fences. */struct amdgpu_fence_driver {	uint64_t			gpu_addr;	volatile uint32_t		*cpu_addr;	/* sync_seq is protected by ring emission lock */	uint32_t			sync_seq;	atomic_t			last_seq;	bool				initialized;	struct amdgpu_irq_src		*irq_src;	unsigned			irq_type;	struct timer_list		fallback_timer;	unsigned			num_fences_mask;	spinlock_t			lock;	struct dma_fence		**fences;}; int amdgpu_fence_driver_init(struct amdgpu_device *adev);void amdgpu_fence_driver_fini(struct amdgpu_device *adev);void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring); int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,				  unsigned num_hw_submission,				  atomic_t *sched_score);int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,				   struct amdgpu_irq_src *irq_src,				   unsigned irq_type);void amdgpu_fence_driver_suspend(struct amdgpu_device *adev);void amdgpu_fence_driver_resume(struct amdgpu_device *adev);int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **fence,		      unsigned flags);int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,			      uint32_t timeout);bool amdgpu_fence_process(struct amdgpu_ring *ring);int amdgpu_fence_wait_empty(struct amdgpu_ring *ring);signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,				      uint32_t wait_seq,				      signed long timeout);unsigned amdgpu_fence_count_emitted(struct amdgpu_ring *ring); /* * Rings. */ /* provided by hw blocks that expose a ring buffer for commands */struct amdgpu_ring_funcs {	enum amdgpu_ring_type	type;	uint32_t		align_mask;	u32			nop;	bool			support_64bit_ptrs;	bool			no_user_fence;	unsigned		vmhub;	unsigned		extra_dw; 	/* ring read/write ptr handling */	u64 (*get_rptr)(struct amdgpu_ring *ring);	u64 (*get_wptr)(struct amdgpu_ring *ring);	void (*set_wptr)(struct amdgpu_ring *ring);	/* validating and patching of IBs */	int (*parse_cs)(struct amdgpu_cs_parser *p, uint32_t ib_idx);	int (*patch_cs_in_place)(struct amdgpu_cs_parser *p, uint32_t ib_idx);	/* constants to calculate how many DW are needed for an emit */	unsigned emit_frame_size;	unsigned emit_ib_size;	/* command emit functions */	void (*emit_ib)(struct amdgpu_ring *ring,			struct amdgpu_job *job,			struct amdgpu_ib *ib,			uint32_t flags);	void (*emit_fence)(struct amdgpu_ring *ring, uint64_t addr,			   uint64_t seq, unsigned flags);	void (*emit_pipeline_sync)(struct amdgpu_ring *ring);	void (*emit_vm_flush)(struct amdgpu_ring *ring, unsigned vmid,			      uint64_t pd_addr);	void (*emit_hdp_flush)(struct amdgpu_ring *ring);	void (*emit_gds_switch)(struct amdgpu_ring *ring, uint32_t vmid,				uint32_t gds_base, uint32_t gds_size,				uint32_t gws_base, uint32_t gws_size,				uint32_t oa_base, uint32_t oa_size);	/* testing functions */	int (*test_ring)(struct amdgpu_ring *ring);	int (*test_ib)(struct amdgpu_ring *ring, long timeout);	/* insert NOP packets */	void (*insert_nop)(struct amdgpu_ring *ring, uint32_t count);	void (*insert_start)(struct amdgpu_ring *ring);	void (*insert_end)(struct amdgpu_ring *ring);	/* pad the indirect buffer to the necessary number of dw */	void (*pad_ib)(struct amdgpu_ring *ring, struct amdgpu_ib *ib);	unsigned (*init_cond_exec)(struct amdgpu_ring *ring);	void (*patch_cond_exec)(struct amdgpu_ring *ring, unsigned offset);	/* note usage for clock and power gating */	void (*begin_use)(struct amdgpu_ring *ring);	void (*end_use)(struct amdgpu_ring *ring);	void (*emit_switch_buffer) (struct amdgpu_ring *ring);	void (*emit_cntxcntl) (struct amdgpu_ring *ring, uint32_t flags);	void (*emit_rreg)(struct amdgpu_ring *ring, uint32_t reg,			  uint32_t reg_val_offs);	void (*emit_wreg)(struct amdgpu_ring *ring, uint32_t reg, uint32_t val);	void (*emit_reg_wait)(struct amdgpu_ring *ring, uint32_t reg,			      uint32_t val, uint32_t mask);	void (*emit_reg_write_reg_wait)(struct amdgpu_ring *ring,					uint32_t reg0, uint32_t reg1,					uint32_t ref, uint32_t mask);	void (*emit_frame_cntl)(struct amdgpu_ring *ring, bool start,				bool secure);	/* Try to soft recover the ring to make the fence signal */	void (*soft_recovery)(struct amdgpu_ring *ring, unsigned vmid);	int (*preempt_ib)(struct amdgpu_ring *ring);	void (*emit_mem_sync)(struct amdgpu_ring *ring);	void (*emit_wave_limit)(struct amdgpu_ring *ring, bool enable);}; struct amdgpu_ring {	struct amdgpu_device		*adev;	const struct amdgpu_ring_funcs	*funcs;	struct amdgpu_fence_driver	fence_drv;	struct drm_gpu_scheduler	sched; 	struct amdgpu_bo	*ring_obj;	volatile uint32_t	*ring;	unsigned		rptr_offs;	u64			wptr;	u64			wptr_old;	unsigned		ring_size;	unsigned		max_dw;	int			count_dw;	uint64_t		gpu_addr;	uint64_t		ptr_mask;	uint32_t		buf_mask;	u32			idx;	u32			me;	u32			pipe;	u32			queue;	struct amdgpu_bo	*mqd_obj;	uint64_t                mqd_gpu_addr;	void                    *mqd_ptr;	uint64_t                eop_gpu_addr;	u32			doorbell_index;	bool			use_doorbell;	bool			use_pollmem;	unsigned		wptr_offs;	unsigned		fence_offs;	uint64_t		current_ctx;	char			name[16];	u32                     trail_seq;	unsigned		trail_fence_offs;	u64			trail_fence_gpu_addr;	volatile u32		*trail_fence_cpu_addr;	unsigned		cond_exe_offs;	u64			cond_exe_gpu_addr;	volatile u32		*cond_exe_cpu_addr;	unsigned		vm_inv_eng;	struct dma_fence	*vmid_wait;	bool			has_compute_vm_bug;	bool			no_scheduler;	int			hw_prio; #if defined(CONFIG_DEBUG_FS)	struct dentry *ent;#endif}; #define amdgpu_ring_parse_cs(r, p, ib) ((r)->funcs->parse_cs((p), (ib)))#define amdgpu_ring_patch_cs_in_place(r, p, ib) ((r)->funcs->patch_cs_in_place((p), (ib)))#define amdgpu_ring_test_ring(r) (r)->funcs->test_ring((r))#define amdgpu_ring_test_ib(r, t) (r)->funcs->test_ib((r), (t))#define amdgpu_ring_get_rptr(r) (r)->funcs->get_rptr((r))#define amdgpu_ring_get_wptr(r) (r)->funcs->get_wptr((r))#define amdgpu_ring_set_wptr(r) (r)->funcs->set_wptr((r))#define amdgpu_ring_emit_ib(r, job, ib, flags) ((r)->funcs->emit_ib((r), (job), (ib), (flags)))#define amdgpu_ring_emit_pipeline_sync(r) (r)->funcs->emit_pipeline_sync((r))#define amdgpu_ring_emit_vm_flush(r, vmid, addr) (r)->funcs->emit_vm_flush((r), (vmid), (addr))#define amdgpu_ring_emit_fence(r, addr, seq, flags) (r)->funcs->emit_fence((r), (addr), (seq), (flags))#define amdgpu_ring_emit_gds_switch(r, v, db, ds, wb, ws, ab, as) (r)->funcs->emit_gds_switch((r), (v), (db), (ds), (wb), (ws), (ab), (as))#define amdgpu_ring_emit_hdp_flush(r) (r)->funcs->emit_hdp_flush((r))#define amdgpu_ring_emit_switch_buffer(r) (r)->funcs->emit_switch_buffer((r))#define amdgpu_ring_emit_cntxcntl(r, d) (r)->funcs->emit_cntxcntl((r), (d))#define amdgpu_ring_emit_rreg(r, d, o) (r)->funcs->emit_rreg((r), (d), (o))#define amdgpu_ring_emit_wreg(r, d, v) (r)->funcs->emit_wreg((r), (d), (v))#define amdgpu_ring_emit_reg_wait(r, d, v, m) (r)->funcs->emit_reg_wait((r), (d), (v), (m))#define amdgpu_ring_emit_reg_write_reg_wait(r, d0, d1, v, m) (r)->funcs->emit_reg_write_reg_wait((r), (d0), (d1), (v), (m))#define amdgpu_ring_emit_frame_cntl(r, b, s) (r)->funcs->emit_frame_cntl((r), (b), (s))#define amdgpu_ring_pad_ib(r, ib) ((r)->funcs->pad_ib((r), (ib)))#define amdgpu_ring_init_cond_exec(r) (r)->funcs->init_cond_exec((r))#define amdgpu_ring_patch_cond_exec(r,o) (r)->funcs->patch_cond_exec((r),(o))#define amdgpu_ring_preempt_ib(r) (r)->funcs->preempt_ib(r) int amdgpu_ring_alloc(struct amdgpu_ring *ring, unsigned ndw);void amdgpu_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count);void amdgpu_ring_generic_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib);void amdgpu_ring_commit(struct amdgpu_ring *ring);void amdgpu_ring_undo(struct amdgpu_ring *ring);int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,		     unsigned int ring_size, struct amdgpu_irq_src *irq_src,		     unsigned int irq_type, unsigned int prio,		     atomic_t *sched_score);void amdgpu_ring_fini(struct amdgpu_ring *ring);void amdgpu_ring_emit_reg_write_reg_wait_helper(struct amdgpu_ring *ring,						uint32_t reg0, uint32_t val0,						uint32_t reg1, uint32_t val1);bool amdgpu_ring_soft_recovery(struct amdgpu_ring *ring, unsigned int vmid,			       struct dma_fence *fence); static inline void amdgpu_ring_set_preempt_cond_exec(struct amdgpu_ring *ring,							bool cond_exec){	*ring->cond_exe_cpu_addr = cond_exec;} static inline void amdgpu_ring_clear_ring(struct amdgpu_ring *ring){	int i = 0;	while (i <= ring->buf_mask)		ring->ring[i++] = ring->funcs->nop; } static inline void amdgpu_ring_write(struct amdgpu_ring *ring, uint32_t v){	if (ring->count_dw <= 0)		DRM_ERROR("amdgpu: writing more dwords to the ring than expected!\n");	ring->ring[ring->wptr++ & ring->buf_mask] = v;	ring->wptr &= ring->ptr_mask;	ring->count_dw--;} static inline void amdgpu_ring_write_multiple(struct amdgpu_ring *ring,					      void *src, int count_dw){	unsigned occupied, chunk1, chunk2;	void *dst; 	if (unlikely(ring->count_dw < count_dw))		DRM_ERROR("amdgpu: writing more dwords to the ring than expected!\n"); 	occupied = ring->wptr & ring->buf_mask;	dst = (void *)&ring->ring[occupied];	chunk1 = ring->buf_mask + 1 - occupied;	chunk1 = (chunk1 >= count_dw) ? count_dw: chunk1;	chunk2 = count_dw - chunk1;	chunk1 <<= 2;	chunk2 <<= 2; 	if (chunk1)		memcpy(dst, src, chunk1); 	if (chunk2) {		src += chunk1;		dst = (void *)ring->ring;		memcpy(dst, src, chunk2);	} 	ring->wptr += count_dw;	ring->wptr &= ring->ptr_mask;	ring->count_dw -= count_dw;} int amdgpu_ring_test_helper(struct amdgpu_ring *ring); int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,			     struct amdgpu_ring *ring);void amdgpu_debugfs_ring_fini(struct amdgpu_ring *ring); #endif