diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 293 |
1 files changed, 293 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 000000000..d242b9a51 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h @@ -0,0 +1,293 @@ +/* + * 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 21 +#define AMDGPU_MAX_GFX_RINGS 1 +#define AMDGPU_MAX_COMPUTE_RINGS 8 +#define AMDGPU_MAX_VCE_RINGS 3 +#define AMDGPU_MAX_UVD_ENC_RINGS 2 + +/* 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) + +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, + AMDGPU_RING_TYPE_UVD_ENC, + AMDGPU_RING_TYPE_VCN_DEC, + AMDGPU_RING_TYPE_VCN_ENC, + AMDGPU_RING_TYPE_VCN_JPEG +}; + +struct amdgpu_device; +struct amdgpu_ring; +struct amdgpu_ib; +struct amdgpu_cs_parser; +struct amdgpu_job; + +/* + * 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); +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); +void 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; + 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_ib *ib, + unsigned vmid, 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 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); + 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_tmz)(struct amdgpu_ring *ring, bool start); + /* priority functions */ + void (*set_priority) (struct amdgpu_ring *ring, + enum drm_sched_priority priority); +}; + +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 list_head lru_list; + + 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; + bool ready; + 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]; + 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; + + atomic_t num_jobs[DRM_SCHED_PRIORITY_MAX]; + struct mutex priority_mutex; + /* protected by priority_mutex */ + int priority; + +#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); +void amdgpu_ring_priority_get(struct amdgpu_ring *ring, + enum drm_sched_priority priority); +void amdgpu_ring_priority_put(struct amdgpu_ring *ring, + enum drm_sched_priority priority); +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); +int amdgpu_ring_lru_get(struct amdgpu_device *adev, int type, + int *blacklist, int num_blacklist, + bool lru_pipe_order, struct amdgpu_ring **ring); +void amdgpu_ring_lru_touch(struct amdgpu_device *adev, 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); + +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; +} + +#endif |