diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h new file mode 100644 index 000000000000..574f0b79c690 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h @@ -0,0 +1,186 @@ +/* + * 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 "gpu_scheduler.h" + +/* max number of rings */ +#define AMDGPU_MAX_RINGS 16 +#define AMDGPU_MAX_GFX_RINGS 1 +#define AMDGPU_MAX_COMPUTE_RINGS 8 +#define AMDGPU_MAX_VCE_RINGS 3 + +/* some special values for the owner field */ +#define AMDGPU_FENCE_OWNER_UNDEFINED ((void*)0ul) +#define AMDGPU_FENCE_OWNER_VM ((void*)1ul) + +#define AMDGPU_FENCE_FLAG_64BIT (1 << 0) +#define AMDGPU_FENCE_FLAG_INT (1 << 1) + +enum amdgpu_ring_type { + AMDGPU_RING_TYPE_GFX, + AMDGPU_RING_TYPE_COMPUTE, + AMDGPU_RING_TYPE_SDMA, + AMDGPU_RING_TYPE_UVD, + AMDGPU_RING_TYPE_VCE, + AMDGPU_RING_TYPE_KIQ +}; + +struct amdgpu_device; +struct amdgpu_ring; +struct amdgpu_ib; +struct amdgpu_cs_parser; + +/* + * 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_device *adev); + +int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring, + unsigned num_hw_submission); +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); +void amdgpu_fence_process(struct amdgpu_ring *ring); +int amdgpu_fence_wait_empty(struct amdgpu_ring *ring); +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; + + /* ring read/write ptr handling */ + u32 (*get_rptr)(struct amdgpu_ring *ring); + u32 (*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); + /* 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_ib *ib, + unsigned vm_id, bool ctx_switch); + 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 vm_id, + uint64_t pd_addr); + void (*emit_hdp_flush)(struct amdgpu_ring *ring); + void (*emit_hdp_invalidate)(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); + /* 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); +}; + +struct amdgpu_ring { + struct amdgpu_device *adev; + const struct amdgpu_ring_funcs *funcs; + struct amdgpu_fence_driver fence_drv; + struct amd_gpu_scheduler sched; + + struct amdgpu_bo *ring_obj; + volatile uint32_t *ring; + unsigned rptr_offs; + unsigned wptr; + unsigned wptr_old; + unsigned ring_size; + unsigned max_dw; + int count_dw; + uint64_t gpu_addr; + uint32_t ptr_mask; + bool ready; + u32 idx; + u32 me; + u32 pipe; + u32 queue; + struct amdgpu_bo *mqd_obj; + u32 doorbell_index; + bool use_doorbell; + unsigned wptr_offs; + unsigned fence_offs; + uint64_t current_ctx; + char name[16]; + unsigned cond_exe_offs; + u64 cond_exe_gpu_addr; + volatile u32 *cond_exe_cpu_addr; +#if defined(CONFIG_DEBUG_FS) + struct dentry *ent; +#endif +}; + +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 ring_size, struct amdgpu_irq_src *irq_src, + unsigned irq_type); +void amdgpu_ring_fini(struct amdgpu_ring *ring); + +#endif |