2 * Copyright 2016 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
22 * Authors: Christian König
24 #ifndef __AMDGPU_RING_H__
25 #define __AMDGPU_RING_H__
27 #include "gpu_scheduler.h"
29 /* max number of rings */
30 #define AMDGPU_MAX_RINGS 18
31 #define AMDGPU_MAX_GFX_RINGS 1
32 #define AMDGPU_MAX_COMPUTE_RINGS 8
33 #define AMDGPU_MAX_VCE_RINGS 3
34 #define AMDGPU_MAX_UVD_ENC_RINGS 2
36 /* some special values for the owner field */
37 #define AMDGPU_FENCE_OWNER_UNDEFINED ((void*)0ul)
38 #define AMDGPU_FENCE_OWNER_VM ((void*)1ul)
40 #define AMDGPU_FENCE_FLAG_64BIT (1 << 0)
41 #define AMDGPU_FENCE_FLAG_INT (1 << 1)
43 enum amdgpu_ring_type {
45 AMDGPU_RING_TYPE_COMPUTE,
46 AMDGPU_RING_TYPE_SDMA,
50 AMDGPU_RING_TYPE_UVD_ENC,
51 AMDGPU_RING_TYPE_VCN_DEC,
52 AMDGPU_RING_TYPE_VCN_ENC
58 struct amdgpu_cs_parser;
63 struct amdgpu_fence_driver {
65 volatile uint32_t *cpu_addr;
66 /* sync_seq is protected by ring emission lock */
70 struct amdgpu_irq_src *irq_src;
72 struct timer_list fallback_timer;
73 unsigned num_fences_mask;
75 struct dma_fence **fences;
78 int amdgpu_fence_driver_init(struct amdgpu_device *adev);
79 void amdgpu_fence_driver_fini(struct amdgpu_device *adev);
80 void amdgpu_fence_driver_force_completion(struct amdgpu_device *adev);
81 void amdgpu_fence_driver_force_completion_ring(struct amdgpu_ring *ring);
83 int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
84 unsigned num_hw_submission);
85 int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,
86 struct amdgpu_irq_src *irq_src,
88 void amdgpu_fence_driver_suspend(struct amdgpu_device *adev);
89 void amdgpu_fence_driver_resume(struct amdgpu_device *adev);
90 int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **fence);
91 void amdgpu_fence_process(struct amdgpu_ring *ring);
92 int amdgpu_fence_wait_empty(struct amdgpu_ring *ring);
93 unsigned amdgpu_fence_count_emitted(struct amdgpu_ring *ring);
99 /* provided by hw blocks that expose a ring buffer for commands */
100 struct amdgpu_ring_funcs {
101 enum amdgpu_ring_type type;
104 bool support_64bit_ptrs;
107 /* ring read/write ptr handling */
108 u64 (*get_rptr)(struct amdgpu_ring *ring);
109 u64 (*get_wptr)(struct amdgpu_ring *ring);
110 void (*set_wptr)(struct amdgpu_ring *ring);
111 /* validating and patching of IBs */
112 int (*parse_cs)(struct amdgpu_cs_parser *p, uint32_t ib_idx);
113 /* constants to calculate how many DW are needed for an emit */
114 unsigned emit_frame_size;
115 unsigned emit_ib_size;
116 /* command emit functions */
117 void (*emit_ib)(struct amdgpu_ring *ring,
118 struct amdgpu_ib *ib,
119 unsigned vm_id, bool ctx_switch);
120 void (*emit_fence)(struct amdgpu_ring *ring, uint64_t addr,
121 uint64_t seq, unsigned flags);
122 void (*emit_pipeline_sync)(struct amdgpu_ring *ring);
123 void (*emit_vm_flush)(struct amdgpu_ring *ring, unsigned vm_id,
125 void (*emit_hdp_flush)(struct amdgpu_ring *ring);
126 void (*emit_hdp_invalidate)(struct amdgpu_ring *ring);
127 void (*emit_gds_switch)(struct amdgpu_ring *ring, uint32_t vmid,
128 uint32_t gds_base, uint32_t gds_size,
129 uint32_t gws_base, uint32_t gws_size,
130 uint32_t oa_base, uint32_t oa_size);
131 /* testing functions */
132 int (*test_ring)(struct amdgpu_ring *ring);
133 int (*test_ib)(struct amdgpu_ring *ring, long timeout);
134 /* insert NOP packets */
135 void (*insert_nop)(struct amdgpu_ring *ring, uint32_t count);
136 void (*insert_start)(struct amdgpu_ring *ring);
137 void (*insert_end)(struct amdgpu_ring *ring);
138 /* pad the indirect buffer to the necessary number of dw */
139 void (*pad_ib)(struct amdgpu_ring *ring, struct amdgpu_ib *ib);
140 unsigned (*init_cond_exec)(struct amdgpu_ring *ring);
141 void (*patch_cond_exec)(struct amdgpu_ring *ring, unsigned offset);
142 /* note usage for clock and power gating */
143 void (*begin_use)(struct amdgpu_ring *ring);
144 void (*end_use)(struct amdgpu_ring *ring);
145 void (*emit_switch_buffer) (struct amdgpu_ring *ring);
146 void (*emit_cntxcntl) (struct amdgpu_ring *ring, uint32_t flags);
147 void (*emit_rreg)(struct amdgpu_ring *ring, uint32_t reg);
148 void (*emit_wreg)(struct amdgpu_ring *ring, uint32_t reg, uint32_t val);
149 void (*emit_tmz)(struct amdgpu_ring *ring, bool start);
153 struct amdgpu_device *adev;
154 const struct amdgpu_ring_funcs *funcs;
155 struct amdgpu_fence_driver fence_drv;
156 struct amd_gpu_scheduler sched;
157 struct list_head lru_list;
159 struct amdgpu_bo *ring_obj;
160 volatile uint32_t *ring;
175 struct amdgpu_bo *mqd_obj;
176 uint64_t mqd_gpu_addr;
178 uint64_t eop_gpu_addr;
183 uint64_t current_ctx;
185 unsigned cond_exe_offs;
186 u64 cond_exe_gpu_addr;
187 volatile u32 *cond_exe_cpu_addr;
189 bool has_compute_vm_bug;
190 #if defined(CONFIG_DEBUG_FS)
195 int amdgpu_ring_alloc(struct amdgpu_ring *ring, unsigned ndw);
196 void amdgpu_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count);
197 void amdgpu_ring_generic_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib);
198 void amdgpu_ring_commit(struct amdgpu_ring *ring);
199 void amdgpu_ring_undo(struct amdgpu_ring *ring);
200 int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
201 unsigned ring_size, struct amdgpu_irq_src *irq_src,
203 void amdgpu_ring_fini(struct amdgpu_ring *ring);
204 int amdgpu_ring_lru_get(struct amdgpu_device *adev, int hw_ip,
205 struct amdgpu_ring **ring);
206 void amdgpu_ring_lru_touch(struct amdgpu_device *adev, struct amdgpu_ring *ring);
207 static inline void amdgpu_ring_clear_ring(struct amdgpu_ring *ring)
210 while (i <= ring->buf_mask)
211 ring->ring[i++] = ring->funcs->nop;
215 static inline bool amdgpu_ring_has_compute_vm_bug(struct amdgpu_ring *ring)
217 return ring->has_compute_vm_bug;