Merge tag 'drm-misc-next-2021-04-09' of git://anongit.freedesktop.org/drm/drm-misc...
[sfrench/cifs-2.6.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_ring.h
1 /*
2  * Copyright 2016 Advanced Micro Devices, Inc.
3  *
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:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
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.
21  *
22  * Authors: Christian König
23  */
24 #ifndef __AMDGPU_RING_H__
25 #define __AMDGPU_RING_H__
26
27 #include <drm/amdgpu_drm.h>
28 #include <drm/gpu_scheduler.h>
29 #include <drm/drm_print.h>
30
31 /* max number of rings */
32 #define AMDGPU_MAX_RINGS                28
33 #define AMDGPU_MAX_HWIP_RINGS           8
34 #define AMDGPU_MAX_GFX_RINGS            2
35 #define AMDGPU_MAX_COMPUTE_RINGS        8
36 #define AMDGPU_MAX_VCE_RINGS            3
37 #define AMDGPU_MAX_UVD_ENC_RINGS        2
38
39 #define AMDGPU_RING_PRIO_DEFAULT        1
40 #define AMDGPU_RING_PRIO_MAX            AMDGPU_GFX_PIPE_PRIO_MAX
41
42 /* some special values for the owner field */
43 #define AMDGPU_FENCE_OWNER_UNDEFINED    ((void *)0ul)
44 #define AMDGPU_FENCE_OWNER_VM           ((void *)1ul)
45 #define AMDGPU_FENCE_OWNER_KFD          ((void *)2ul)
46
47 #define AMDGPU_FENCE_FLAG_64BIT         (1 << 0)
48 #define AMDGPU_FENCE_FLAG_INT           (1 << 1)
49 #define AMDGPU_FENCE_FLAG_TC_WB_ONLY    (1 << 2)
50
51 #define to_amdgpu_ring(s) container_of((s), struct amdgpu_ring, sched)
52
53 #define AMDGPU_IB_POOL_SIZE     (1024 * 1024)
54
55 enum amdgpu_ring_type {
56         AMDGPU_RING_TYPE_GFX            = AMDGPU_HW_IP_GFX,
57         AMDGPU_RING_TYPE_COMPUTE        = AMDGPU_HW_IP_COMPUTE,
58         AMDGPU_RING_TYPE_SDMA           = AMDGPU_HW_IP_DMA,
59         AMDGPU_RING_TYPE_UVD            = AMDGPU_HW_IP_UVD,
60         AMDGPU_RING_TYPE_VCE            = AMDGPU_HW_IP_VCE,
61         AMDGPU_RING_TYPE_UVD_ENC        = AMDGPU_HW_IP_UVD_ENC,
62         AMDGPU_RING_TYPE_VCN_DEC        = AMDGPU_HW_IP_VCN_DEC,
63         AMDGPU_RING_TYPE_VCN_ENC        = AMDGPU_HW_IP_VCN_ENC,
64         AMDGPU_RING_TYPE_VCN_JPEG       = AMDGPU_HW_IP_VCN_JPEG,
65         AMDGPU_RING_TYPE_KIQ,
66         AMDGPU_RING_TYPE_MES
67 };
68
69 enum amdgpu_ib_pool_type {
70         /* Normal submissions to the top of the pipeline. */
71         AMDGPU_IB_POOL_DELAYED,
72         /* Immediate submissions to the bottom of the pipeline. */
73         AMDGPU_IB_POOL_IMMEDIATE,
74         /* Direct submission to the ring buffer during init and reset. */
75         AMDGPU_IB_POOL_DIRECT,
76
77         AMDGPU_IB_POOL_MAX
78 };
79
80 struct amdgpu_device;
81 struct amdgpu_ring;
82 struct amdgpu_ib;
83 struct amdgpu_cs_parser;
84 struct amdgpu_job;
85
86 struct amdgpu_sched {
87         u32                             num_scheds;
88         struct drm_gpu_scheduler        *sched[AMDGPU_MAX_HWIP_RINGS];
89 };
90
91 /*
92  * Fences.
93  */
94 struct amdgpu_fence_driver {
95         uint64_t                        gpu_addr;
96         volatile uint32_t               *cpu_addr;
97         /* sync_seq is protected by ring emission lock */
98         uint32_t                        sync_seq;
99         atomic_t                        last_seq;
100         bool                            initialized;
101         struct amdgpu_irq_src           *irq_src;
102         unsigned                        irq_type;
103         struct timer_list               fallback_timer;
104         unsigned                        num_fences_mask;
105         spinlock_t                      lock;
106         struct dma_fence                **fences;
107 };
108
109 int amdgpu_fence_driver_init(struct amdgpu_device *adev);
110 void amdgpu_fence_driver_fini(struct amdgpu_device *adev);
111 void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring);
112
113 int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
114                                   unsigned num_hw_submission);
115 int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,
116                                    struct amdgpu_irq_src *irq_src,
117                                    unsigned irq_type);
118 void amdgpu_fence_driver_suspend(struct amdgpu_device *adev);
119 void amdgpu_fence_driver_resume(struct amdgpu_device *adev);
120 int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **fence,
121                       unsigned flags);
122 int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,
123                               uint32_t timeout);
124 bool amdgpu_fence_process(struct amdgpu_ring *ring);
125 int amdgpu_fence_wait_empty(struct amdgpu_ring *ring);
126 signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,
127                                       uint32_t wait_seq,
128                                       signed long timeout);
129 unsigned amdgpu_fence_count_emitted(struct amdgpu_ring *ring);
130
131 /*
132  * Rings.
133  */
134
135 /* provided by hw blocks that expose a ring buffer for commands */
136 struct amdgpu_ring_funcs {
137         enum amdgpu_ring_type   type;
138         uint32_t                align_mask;
139         u32                     nop;
140         bool                    support_64bit_ptrs;
141         bool                    no_user_fence;
142         unsigned                vmhub;
143         unsigned                extra_dw;
144
145         /* ring read/write ptr handling */
146         u64 (*get_rptr)(struct amdgpu_ring *ring);
147         u64 (*get_wptr)(struct amdgpu_ring *ring);
148         void (*set_wptr)(struct amdgpu_ring *ring);
149         /* validating and patching of IBs */
150         int (*parse_cs)(struct amdgpu_cs_parser *p, uint32_t ib_idx);
151         int (*patch_cs_in_place)(struct amdgpu_cs_parser *p, uint32_t ib_idx);
152         /* constants to calculate how many DW are needed for an emit */
153         unsigned emit_frame_size;
154         unsigned emit_ib_size;
155         /* command emit functions */
156         void (*emit_ib)(struct amdgpu_ring *ring,
157                         struct amdgpu_job *job,
158                         struct amdgpu_ib *ib,
159                         uint32_t flags);
160         void (*emit_fence)(struct amdgpu_ring *ring, uint64_t addr,
161                            uint64_t seq, unsigned flags);
162         void (*emit_pipeline_sync)(struct amdgpu_ring *ring);
163         void (*emit_vm_flush)(struct amdgpu_ring *ring, unsigned vmid,
164                               uint64_t pd_addr);
165         void (*emit_hdp_flush)(struct amdgpu_ring *ring);
166         void (*emit_gds_switch)(struct amdgpu_ring *ring, uint32_t vmid,
167                                 uint32_t gds_base, uint32_t gds_size,
168                                 uint32_t gws_base, uint32_t gws_size,
169                                 uint32_t oa_base, uint32_t oa_size);
170         /* testing functions */
171         int (*test_ring)(struct amdgpu_ring *ring);
172         int (*test_ib)(struct amdgpu_ring *ring, long timeout);
173         /* insert NOP packets */
174         void (*insert_nop)(struct amdgpu_ring *ring, uint32_t count);
175         void (*insert_start)(struct amdgpu_ring *ring);
176         void (*insert_end)(struct amdgpu_ring *ring);
177         /* pad the indirect buffer to the necessary number of dw */
178         void (*pad_ib)(struct amdgpu_ring *ring, struct amdgpu_ib *ib);
179         unsigned (*init_cond_exec)(struct amdgpu_ring *ring);
180         void (*patch_cond_exec)(struct amdgpu_ring *ring, unsigned offset);
181         /* note usage for clock and power gating */
182         void (*begin_use)(struct amdgpu_ring *ring);
183         void (*end_use)(struct amdgpu_ring *ring);
184         void (*emit_switch_buffer) (struct amdgpu_ring *ring);
185         void (*emit_cntxcntl) (struct amdgpu_ring *ring, uint32_t flags);
186         void (*emit_rreg)(struct amdgpu_ring *ring, uint32_t reg,
187                           uint32_t reg_val_offs);
188         void (*emit_wreg)(struct amdgpu_ring *ring, uint32_t reg, uint32_t val);
189         void (*emit_reg_wait)(struct amdgpu_ring *ring, uint32_t reg,
190                               uint32_t val, uint32_t mask);
191         void (*emit_reg_write_reg_wait)(struct amdgpu_ring *ring,
192                                         uint32_t reg0, uint32_t reg1,
193                                         uint32_t ref, uint32_t mask);
194         void (*emit_frame_cntl)(struct amdgpu_ring *ring, bool start,
195                                 bool secure);
196         /* Try to soft recover the ring to make the fence signal */
197         void (*soft_recovery)(struct amdgpu_ring *ring, unsigned vmid);
198         int (*preempt_ib)(struct amdgpu_ring *ring);
199         void (*emit_mem_sync)(struct amdgpu_ring *ring);
200         void (*emit_wave_limit)(struct amdgpu_ring *ring, bool enable);
201 };
202
203 struct amdgpu_ring {
204         struct amdgpu_device            *adev;
205         const struct amdgpu_ring_funcs  *funcs;
206         struct amdgpu_fence_driver      fence_drv;
207         struct drm_gpu_scheduler        sched;
208
209         struct amdgpu_bo        *ring_obj;
210         volatile uint32_t       *ring;
211         unsigned                rptr_offs;
212         u64                     wptr;
213         u64                     wptr_old;
214         unsigned                ring_size;
215         unsigned                max_dw;
216         int                     count_dw;
217         uint64_t                gpu_addr;
218         uint64_t                ptr_mask;
219         uint32_t                buf_mask;
220         u32                     idx;
221         u32                     me;
222         u32                     pipe;
223         u32                     queue;
224         struct amdgpu_bo        *mqd_obj;
225         uint64_t                mqd_gpu_addr;
226         void                    *mqd_ptr;
227         uint64_t                eop_gpu_addr;
228         u32                     doorbell_index;
229         bool                    use_doorbell;
230         bool                    use_pollmem;
231         unsigned                wptr_offs;
232         unsigned                fence_offs;
233         uint64_t                current_ctx;
234         char                    name[16];
235         u32                     trail_seq;
236         unsigned                trail_fence_offs;
237         u64                     trail_fence_gpu_addr;
238         volatile u32            *trail_fence_cpu_addr;
239         unsigned                cond_exe_offs;
240         u64                     cond_exe_gpu_addr;
241         volatile u32            *cond_exe_cpu_addr;
242         unsigned                vm_inv_eng;
243         struct dma_fence        *vmid_wait;
244         bool                    has_compute_vm_bug;
245         bool                    no_scheduler;
246         int                     hw_prio;
247
248 #if defined(CONFIG_DEBUG_FS)
249         struct dentry *ent;
250 #endif
251 };
252
253 #define amdgpu_ring_parse_cs(r, p, ib) ((r)->funcs->parse_cs((p), (ib)))
254 #define amdgpu_ring_patch_cs_in_place(r, p, ib) ((r)->funcs->patch_cs_in_place((p), (ib)))
255 #define amdgpu_ring_test_ring(r) (r)->funcs->test_ring((r))
256 #define amdgpu_ring_test_ib(r, t) (r)->funcs->test_ib((r), (t))
257 #define amdgpu_ring_get_rptr(r) (r)->funcs->get_rptr((r))
258 #define amdgpu_ring_get_wptr(r) (r)->funcs->get_wptr((r))
259 #define amdgpu_ring_set_wptr(r) (r)->funcs->set_wptr((r))
260 #define amdgpu_ring_emit_ib(r, job, ib, flags) ((r)->funcs->emit_ib((r), (job), (ib), (flags)))
261 #define amdgpu_ring_emit_pipeline_sync(r) (r)->funcs->emit_pipeline_sync((r))
262 #define amdgpu_ring_emit_vm_flush(r, vmid, addr) (r)->funcs->emit_vm_flush((r), (vmid), (addr))
263 #define amdgpu_ring_emit_fence(r, addr, seq, flags) (r)->funcs->emit_fence((r), (addr), (seq), (flags))
264 #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))
265 #define amdgpu_ring_emit_hdp_flush(r) (r)->funcs->emit_hdp_flush((r))
266 #define amdgpu_ring_emit_switch_buffer(r) (r)->funcs->emit_switch_buffer((r))
267 #define amdgpu_ring_emit_cntxcntl(r, d) (r)->funcs->emit_cntxcntl((r), (d))
268 #define amdgpu_ring_emit_rreg(r, d, o) (r)->funcs->emit_rreg((r), (d), (o))
269 #define amdgpu_ring_emit_wreg(r, d, v) (r)->funcs->emit_wreg((r), (d), (v))
270 #define amdgpu_ring_emit_reg_wait(r, d, v, m) (r)->funcs->emit_reg_wait((r), (d), (v), (m))
271 #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))
272 #define amdgpu_ring_emit_frame_cntl(r, b, s) (r)->funcs->emit_frame_cntl((r), (b), (s))
273 #define amdgpu_ring_pad_ib(r, ib) ((r)->funcs->pad_ib((r), (ib)))
274 #define amdgpu_ring_init_cond_exec(r) (r)->funcs->init_cond_exec((r))
275 #define amdgpu_ring_patch_cond_exec(r,o) (r)->funcs->patch_cond_exec((r),(o))
276 #define amdgpu_ring_preempt_ib(r) (r)->funcs->preempt_ib(r)
277
278 int amdgpu_ring_alloc(struct amdgpu_ring *ring, unsigned ndw);
279 void amdgpu_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count);
280 void amdgpu_ring_generic_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib);
281 void amdgpu_ring_commit(struct amdgpu_ring *ring);
282 void amdgpu_ring_undo(struct amdgpu_ring *ring);
283 int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
284                      unsigned int ring_size, struct amdgpu_irq_src *irq_src,
285                      unsigned int irq_type, unsigned int prio);
286 void amdgpu_ring_fini(struct amdgpu_ring *ring);
287 void amdgpu_ring_emit_reg_write_reg_wait_helper(struct amdgpu_ring *ring,
288                                                 uint32_t reg0, uint32_t val0,
289                                                 uint32_t reg1, uint32_t val1);
290 bool amdgpu_ring_soft_recovery(struct amdgpu_ring *ring, unsigned int vmid,
291                                struct dma_fence *fence);
292
293 static inline void amdgpu_ring_set_preempt_cond_exec(struct amdgpu_ring *ring,
294                                                         bool cond_exec)
295 {
296         *ring->cond_exe_cpu_addr = cond_exec;
297 }
298
299 static inline void amdgpu_ring_clear_ring(struct amdgpu_ring *ring)
300 {
301         int i = 0;
302         while (i <= ring->buf_mask)
303                 ring->ring[i++] = ring->funcs->nop;
304
305 }
306
307 static inline void amdgpu_ring_write(struct amdgpu_ring *ring, uint32_t v)
308 {
309         if (ring->count_dw <= 0)
310                 DRM_ERROR("amdgpu: writing more dwords to the ring than expected!\n");
311         ring->ring[ring->wptr++ & ring->buf_mask] = v;
312         ring->wptr &= ring->ptr_mask;
313         ring->count_dw--;
314 }
315
316 static inline void amdgpu_ring_write_multiple(struct amdgpu_ring *ring,
317                                               void *src, int count_dw)
318 {
319         unsigned occupied, chunk1, chunk2;
320         void *dst;
321
322         if (unlikely(ring->count_dw < count_dw))
323                 DRM_ERROR("amdgpu: writing more dwords to the ring than expected!\n");
324
325         occupied = ring->wptr & ring->buf_mask;
326         dst = (void *)&ring->ring[occupied];
327         chunk1 = ring->buf_mask + 1 - occupied;
328         chunk1 = (chunk1 >= count_dw) ? count_dw: chunk1;
329         chunk2 = count_dw - chunk1;
330         chunk1 <<= 2;
331         chunk2 <<= 2;
332
333         if (chunk1)
334                 memcpy(dst, src, chunk1);
335
336         if (chunk2) {
337                 src += chunk1;
338                 dst = (void *)ring->ring;
339                 memcpy(dst, src, chunk2);
340         }
341
342         ring->wptr += count_dw;
343         ring->wptr &= ring->ptr_mask;
344         ring->count_dw -= count_dw;
345 }
346
347 int amdgpu_ring_test_helper(struct amdgpu_ring *ring);
348
349 int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
350                              struct amdgpu_ring *ring);
351 void amdgpu_debugfs_ring_fini(struct amdgpu_ring *ring);
352
353 #endif