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 #include <drm/drm_suballoc.h>
31
32 struct amdgpu_device;
33 struct amdgpu_ring;
34 struct amdgpu_ib;
35 struct amdgpu_cs_parser;
36 struct amdgpu_job;
37 struct amdgpu_vm;
38
39 /* max number of rings */
40 #define AMDGPU_MAX_RINGS 149
41 #define AMDGPU_MAX_HWIP_RINGS 64
42 #define AMDGPU_MAX_GFX_RINGS 2
43 #define AMDGPU_MAX_SW_GFX_RINGS 2
44 #define AMDGPU_MAX_COMPUTE_RINGS 8
45 #define AMDGPU_MAX_VCE_RINGS 3
46 #define AMDGPU_MAX_UVD_ENC_RINGS 2
47 #define AMDGPU_MAX_VPE_RINGS 2
48
49 enum amdgpu_ring_priority_level {
50 AMDGPU_RING_PRIO_0,
51 AMDGPU_RING_PRIO_1,
52 AMDGPU_RING_PRIO_DEFAULT = 1,
53 AMDGPU_RING_PRIO_2,
54 AMDGPU_RING_PRIO_MAX
55 };
56
57 /* some special values for the owner field */
58 #define AMDGPU_FENCE_OWNER_UNDEFINED ((void *)0ul)
59 #define AMDGPU_FENCE_OWNER_VM ((void *)1ul)
60 #define AMDGPU_FENCE_OWNER_KFD ((void *)2ul)
61
62 #define AMDGPU_FENCE_FLAG_64BIT (1 << 0)
63 #define AMDGPU_FENCE_FLAG_INT (1 << 1)
64 #define AMDGPU_FENCE_FLAG_TC_WB_ONLY (1 << 2)
65 #define AMDGPU_FENCE_FLAG_EXEC (1 << 3)
66
67 #define to_amdgpu_ring(s) container_of((s), struct amdgpu_ring, sched)
68
69 #define AMDGPU_IB_POOL_SIZE (1024 * 1024)
70
71 enum amdgpu_ring_type {
72 AMDGPU_RING_TYPE_GFX = AMDGPU_HW_IP_GFX,
73 AMDGPU_RING_TYPE_COMPUTE = AMDGPU_HW_IP_COMPUTE,
74 AMDGPU_RING_TYPE_SDMA = AMDGPU_HW_IP_DMA,
75 AMDGPU_RING_TYPE_UVD = AMDGPU_HW_IP_UVD,
76 AMDGPU_RING_TYPE_VCE = AMDGPU_HW_IP_VCE,
77 AMDGPU_RING_TYPE_UVD_ENC = AMDGPU_HW_IP_UVD_ENC,
78 AMDGPU_RING_TYPE_VCN_DEC = AMDGPU_HW_IP_VCN_DEC,
79 AMDGPU_RING_TYPE_VCN_ENC = AMDGPU_HW_IP_VCN_ENC,
80 AMDGPU_RING_TYPE_VCN_JPEG = AMDGPU_HW_IP_VCN_JPEG,
81 AMDGPU_RING_TYPE_VPE = AMDGPU_HW_IP_VPE,
82 AMDGPU_RING_TYPE_KIQ,
83 AMDGPU_RING_TYPE_MES,
84 AMDGPU_RING_TYPE_UMSCH_MM,
85 AMDGPU_RING_TYPE_CPER,
86 };
87
88 enum amdgpu_ib_pool_type {
89 /* Normal submissions to the top of the pipeline. */
90 AMDGPU_IB_POOL_DELAYED,
91 /* Immediate submissions to the bottom of the pipeline. */
92 AMDGPU_IB_POOL_IMMEDIATE,
93 /* Direct submission to the ring buffer during init and reset. */
94 AMDGPU_IB_POOL_DIRECT,
95
96 AMDGPU_IB_POOL_MAX
97 };
98
99 struct amdgpu_ib {
100 struct drm_suballoc *sa_bo;
101 uint32_t length_dw;
102 uint64_t gpu_addr;
103 uint32_t *ptr;
104 uint32_t flags;
105 };
106
107 struct amdgpu_sched {
108 u32 num_scheds;
109 struct drm_gpu_scheduler *sched[AMDGPU_MAX_HWIP_RINGS];
110 };
111
112 /*
113 * Fences.
114 */
115 struct amdgpu_fence_driver {
116 uint64_t gpu_addr;
117 uint32_t *cpu_addr;
118 /* sync_seq is protected by ring emission lock */
119 uint32_t sync_seq;
120 atomic_t last_seq;
121 u64 signalled_wptr;
122 bool initialized;
123 struct amdgpu_irq_src *irq_src;
124 unsigned irq_type;
125 struct timer_list fallback_timer;
126 unsigned num_fences_mask;
127 spinlock_t lock;
128 struct dma_fence **fences;
129 };
130
131 /*
132 * Fences mark an event in the GPUs pipeline and are used
133 * for GPU/CPU synchronization. When the fence is written,
134 * it is expected that all buffers associated with that fence
135 * are no longer in use by the associated ring on the GPU and
136 * that the relevant GPU caches have been flushed.
137 */
138
139 struct amdgpu_fence {
140 struct dma_fence base;
141
142 /* RB, DMA, etc. */
143 struct amdgpu_ring *ring;
144 ktime_t start_timestamp;
145
146 /* wptr for the fence for resets */
147 u64 wptr;
148 /* fence context for resets */
149 u64 context;
150 uint32_t seq;
151 };
152
153 extern const struct drm_sched_backend_ops amdgpu_sched_ops;
154
155 void amdgpu_fence_driver_clear_job_fences(struct amdgpu_ring *ring);
156 void amdgpu_fence_driver_set_error(struct amdgpu_ring *ring, int error);
157 void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring);
158 void amdgpu_fence_driver_guilty_force_completion(struct amdgpu_fence *af);
159 void amdgpu_fence_save_wptr(struct dma_fence *fence);
160
161 int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring);
162 int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,
163 struct amdgpu_irq_src *irq_src,
164 unsigned irq_type);
165 void amdgpu_fence_driver_hw_init(struct amdgpu_device *adev);
166 void amdgpu_fence_driver_hw_fini(struct amdgpu_device *adev);
167 int amdgpu_fence_driver_sw_init(struct amdgpu_device *adev);
168 void amdgpu_fence_driver_sw_fini(struct amdgpu_device *adev);
169 int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **f,
170 struct amdgpu_fence *af, unsigned int flags);
171 int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,
172 uint32_t timeout);
173 bool amdgpu_fence_process(struct amdgpu_ring *ring);
174 int amdgpu_fence_wait_empty(struct amdgpu_ring *ring);
175 signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,
176 uint32_t wait_seq,
177 signed long timeout);
178 unsigned amdgpu_fence_count_emitted(struct amdgpu_ring *ring);
179
180 void amdgpu_fence_driver_isr_toggle(struct amdgpu_device *adev, bool stop);
181
182 u64 amdgpu_fence_last_unsignaled_time_us(struct amdgpu_ring *ring);
183 void amdgpu_fence_update_start_timestamp(struct amdgpu_ring *ring, uint32_t seq,
184 ktime_t timestamp);
185
186 /*
187 * Rings.
188 */
189
190 /* provided by hw blocks that expose a ring buffer for commands */
191 struct amdgpu_ring_funcs {
192 /**
193 * @type:
194 *
195 * GFX, Compute, SDMA, UVD, VCE, VCN, VPE, KIQ, MES, UMSCH, and CPER
196 * use ring buffers. The type field just identifies which component the
197 * ring buffer is associated with.
198 */
199 enum amdgpu_ring_type type;
200 uint32_t align_mask;
201
202 /**
203 * @nop:
204 *
205 * Every block in the amdgpu has no-op instructions (e.g., GFX 10
206 * uses PACKET3(PACKET3_NOP, 0x3FFF), VCN 5 uses VCN_ENC_CMD_NO_OP,
207 * etc). This field receives the specific no-op for the component
208 * that initializes the ring.
209 */
210 u32 nop;
211 bool support_64bit_ptrs;
212 bool no_user_fence;
213 bool secure_submission_supported;
214
215 /**
216 * @extra_bytes:
217 *
218 * Optional extra space in bytes that is added to the ring size
219 * when allocating the BO that holds the contents of the ring.
220 * This space isn't used for command submission to the ring,
221 * but is just there to satisfy some hardware requirements or
222 * implement workarounds. It's up to the implementation of each
223 * specific ring to initialize this space.
224 */
225 unsigned extra_bytes;
226
227 /* ring read/write ptr handling */
228 u64 (*get_rptr)(struct amdgpu_ring *ring);
229 u64 (*get_wptr)(struct amdgpu_ring *ring);
230 void (*set_wptr)(struct amdgpu_ring *ring);
231 /* validating and patching of IBs */
232 int (*parse_cs)(struct amdgpu_cs_parser *p,
233 struct amdgpu_job *job,
234 struct amdgpu_ib *ib);
235 int (*patch_cs_in_place)(struct amdgpu_cs_parser *p,
236 struct amdgpu_job *job,
237 struct amdgpu_ib *ib);
238 /* constants to calculate how many DW are needed for an emit */
239 unsigned emit_frame_size;
240 unsigned emit_ib_size;
241 /* command emit functions */
242 void (*emit_ib)(struct amdgpu_ring *ring,
243 struct amdgpu_job *job,
244 struct amdgpu_ib *ib,
245 uint32_t flags);
246 void (*emit_fence)(struct amdgpu_ring *ring, uint64_t addr,
247 uint64_t seq, unsigned flags);
248 void (*emit_pipeline_sync)(struct amdgpu_ring *ring);
249 void (*emit_vm_flush)(struct amdgpu_ring *ring, unsigned vmid,
250 uint64_t pd_addr);
251 void (*emit_hdp_flush)(struct amdgpu_ring *ring);
252 void (*emit_gds_switch)(struct amdgpu_ring *ring, uint32_t vmid,
253 uint32_t gds_base, uint32_t gds_size,
254 uint32_t gws_base, uint32_t gws_size,
255 uint32_t oa_base, uint32_t oa_size);
256 /* testing functions */
257 int (*test_ring)(struct amdgpu_ring *ring);
258 int (*test_ib)(struct amdgpu_ring *ring, long timeout);
259 /* insert NOP packets */
260 void (*insert_nop)(struct amdgpu_ring *ring, uint32_t count);
261 void (*insert_start)(struct amdgpu_ring *ring);
262 void (*insert_end)(struct amdgpu_ring *ring);
263 /* pad the indirect buffer to the necessary number of dw */
264 void (*pad_ib)(struct amdgpu_ring *ring, struct amdgpu_ib *ib);
265 unsigned (*init_cond_exec)(struct amdgpu_ring *ring, uint64_t addr);
266 /* note usage for clock and power gating */
267 void (*begin_use)(struct amdgpu_ring *ring);
268 void (*end_use)(struct amdgpu_ring *ring);
269 void (*emit_switch_buffer) (struct amdgpu_ring *ring);
270 void (*emit_cntxcntl) (struct amdgpu_ring *ring, uint32_t flags);
271 void (*emit_gfx_shadow)(struct amdgpu_ring *ring, u64 shadow_va, u64 csa_va,
272 u64 gds_va, bool init_shadow, int vmid);
273 void (*emit_rreg)(struct amdgpu_ring *ring, uint32_t reg,
274 uint32_t reg_val_offs);
275 void (*emit_wreg)(struct amdgpu_ring *ring, uint32_t reg, uint32_t val);
276 void (*emit_reg_wait)(struct amdgpu_ring *ring, uint32_t reg,
277 uint32_t val, uint32_t mask);
278 void (*emit_reg_write_reg_wait)(struct amdgpu_ring *ring,
279 uint32_t reg0, uint32_t reg1,
280 uint32_t ref, uint32_t mask);
281 void (*emit_frame_cntl)(struct amdgpu_ring *ring, bool start,
282 bool secure);
283 /* Try to soft recover the ring to make the fence signal */
284 void (*soft_recovery)(struct amdgpu_ring *ring, unsigned vmid);
285 int (*preempt_ib)(struct amdgpu_ring *ring);
286 void (*emit_mem_sync)(struct amdgpu_ring *ring);
287 void (*emit_wave_limit)(struct amdgpu_ring *ring, bool enable);
288 void (*patch_cntl)(struct amdgpu_ring *ring, unsigned offset);
289 void (*patch_ce)(struct amdgpu_ring *ring, unsigned offset);
290 void (*patch_de)(struct amdgpu_ring *ring, unsigned offset);
291 int (*reset)(struct amdgpu_ring *ring, unsigned int vmid,
292 struct amdgpu_fence *timedout_fence);
293 void (*emit_cleaner_shader)(struct amdgpu_ring *ring);
294 };
295
296 /**
297 * amdgpu_ring - Holds ring information
298 */
299 struct amdgpu_ring {
300 struct amdgpu_device *adev;
301 const struct amdgpu_ring_funcs *funcs;
302 struct amdgpu_fence_driver fence_drv;
303 struct drm_gpu_scheduler sched;
304
305 struct amdgpu_bo *ring_obj;
306 uint32_t *ring;
307 /* backups for resets */
308 uint32_t *ring_backup;
309 unsigned int ring_backup_entries_to_copy;
310 unsigned rptr_offs;
311 u64 rptr_gpu_addr;
312 u32 *rptr_cpu_addr;
313
314 /**
315 * @wptr:
316 *
317 * This is part of the Ring buffer implementation and represents the
318 * write pointer. The wptr determines where the host has written.
319 */
320 u64 wptr;
321
322 /**
323 * @wptr_old:
324 *
325 * Before update wptr with the new value, usually the old value is
326 * stored in the wptr_old.
327 */
328 u64 wptr_old;
329 unsigned ring_size;
330
331 /**
332 * @max_dw:
333 *
334 * Maximum number of DWords for ring allocation. This information is
335 * provided at the ring initialization time, and each IP block can
336 * specify a specific value. Check places that invoke
337 * amdgpu_ring_init() to see the maximum size per block.
338 */
339 unsigned max_dw;
340
341 /**
342 * @count_dw:
343 *
344 * This value starts with the maximum amount of DWords supported by the
345 * ring. This value is updated based on the ring manipulation.
346 */
347 int count_dw;
348 uint64_t gpu_addr;
349
350 /**
351 * @ptr_mask:
352 *
353 * Some IPs provide support for 64-bit pointers and others for 32-bit
354 * only; this behavior is component-specific and defined by the field
355 * support_64bit_ptr. If the IP block supports 64-bits, the mask
356 * 0xffffffffffffffff is set; otherwise, this value assumes buf_mask.
357 * Notice that this field is used to keep wptr under a valid range.
358 */
359 uint64_t ptr_mask;
360
361 /**
362 * @buf_mask:
363 *
364 * Buffer mask is a value used to keep wptr count under its
365 * thresholding. Buffer mask initialized during the ring buffer
366 * initialization time, and it is defined as (ring_size / 4) -1.
367 */
368 uint32_t buf_mask;
369 u32 idx;
370 u32 xcc_id;
371 u32 xcp_id;
372 u32 me;
373 u32 pipe;
374 u32 queue;
375 struct amdgpu_bo *mqd_obj;
376 uint64_t mqd_gpu_addr;
377 void *mqd_ptr;
378 unsigned mqd_size;
379 uint64_t eop_gpu_addr;
380 u32 doorbell_index;
381 bool use_doorbell;
382 bool use_pollmem;
383 unsigned wptr_offs;
384 u64 wptr_gpu_addr;
385
386 /**
387 * @wptr_cpu_addr:
388 *
389 * This is the CPU address pointer in the writeback slot. This is used
390 * to commit changes to the GPU.
391 */
392 u32 *wptr_cpu_addr;
393 unsigned fence_offs;
394 u64 fence_gpu_addr;
395 u32 *fence_cpu_addr;
396 uint64_t current_ctx;
397 char name[16];
398 u32 trail_seq;
399 unsigned trail_fence_offs;
400 u64 trail_fence_gpu_addr;
401 u32 *trail_fence_cpu_addr;
402 unsigned cond_exe_offs;
403 u64 cond_exe_gpu_addr;
404 u32 *cond_exe_cpu_addr;
405 unsigned int set_q_mode_offs;
406 u32 *set_q_mode_ptr;
407 u64 set_q_mode_token;
408 unsigned vm_hub;
409 unsigned vm_inv_eng;
410 struct dma_fence *vmid_wait;
411 bool has_compute_vm_bug;
412 bool no_scheduler;
413 bool no_user_submission;
414 int hw_prio;
415 unsigned num_hw_submission;
416 atomic_t *sched_score;
417
418 bool is_sw_ring;
419 unsigned int entry_index;
420 /* store the cached rptr to restore after reset */
421 uint64_t cached_rptr;
422 };
423
424 #define amdgpu_ring_parse_cs(r, p, job, ib) ((r)->funcs->parse_cs((p), (job), (ib)))
425 #define amdgpu_ring_patch_cs_in_place(r, p, job, ib) ((r)->funcs->patch_cs_in_place((p), (job), (ib)))
426 #define amdgpu_ring_test_ring(r) (r)->funcs->test_ring((r))
427 #define amdgpu_ring_test_ib(r, t) ((r)->funcs->test_ib ? (r)->funcs->test_ib((r), (t)) : 0)
428 #define amdgpu_ring_get_rptr(r) (r)->funcs->get_rptr((r))
429 #define amdgpu_ring_get_wptr(r) (r)->funcs->get_wptr((r))
430 #define amdgpu_ring_set_wptr(r) (r)->funcs->set_wptr((r))
431 #define amdgpu_ring_emit_ib(r, job, ib, flags) ((r)->funcs->emit_ib((r), (job), (ib), (flags)))
432 #define amdgpu_ring_emit_pipeline_sync(r) (r)->funcs->emit_pipeline_sync((r))
433 #define amdgpu_ring_emit_vm_flush(r, vmid, addr) (r)->funcs->emit_vm_flush((r), (vmid), (addr))
434 #define amdgpu_ring_emit_fence(r, addr, seq, flags) (r)->funcs->emit_fence((r), (addr), (seq), (flags))
435 #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))
436 #define amdgpu_ring_emit_hdp_flush(r) (r)->funcs->emit_hdp_flush((r))
437 #define amdgpu_ring_emit_switch_buffer(r) (r)->funcs->emit_switch_buffer((r))
438 #define amdgpu_ring_emit_cntxcntl(r, d) (r)->funcs->emit_cntxcntl((r), (d))
439 #define amdgpu_ring_emit_gfx_shadow(r, s, c, g, i, v) ((r)->funcs->emit_gfx_shadow((r), (s), (c), (g), (i), (v)))
440 #define amdgpu_ring_emit_rreg(r, d, o) (r)->funcs->emit_rreg((r), (d), (o))
441 #define amdgpu_ring_emit_wreg(r, d, v) (r)->funcs->emit_wreg((r), (d), (v))
442 #define amdgpu_ring_emit_reg_wait(r, d, v, m) (r)->funcs->emit_reg_wait((r), (d), (v), (m))
443 #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))
444 #define amdgpu_ring_emit_frame_cntl(r, b, s) (r)->funcs->emit_frame_cntl((r), (b), (s))
445 #define amdgpu_ring_pad_ib(r, ib) ((r)->funcs->pad_ib((r), (ib)))
446 #define amdgpu_ring_init_cond_exec(r, a) (r)->funcs->init_cond_exec((r), (a))
447 #define amdgpu_ring_preempt_ib(r) (r)->funcs->preempt_ib(r)
448 #define amdgpu_ring_patch_cntl(r, o) ((r)->funcs->patch_cntl((r), (o)))
449 #define amdgpu_ring_patch_ce(r, o) ((r)->funcs->patch_ce((r), (o)))
450 #define amdgpu_ring_patch_de(r, o) ((r)->funcs->patch_de((r), (o)))
451 #define amdgpu_ring_reset(r, v, f) (r)->funcs->reset((r), (v), (f))
452
453 unsigned int amdgpu_ring_max_ibs(enum amdgpu_ring_type type);
454 int amdgpu_ring_alloc(struct amdgpu_ring *ring, unsigned ndw);
455 void amdgpu_ring_ib_begin(struct amdgpu_ring *ring);
456 void amdgpu_ring_ib_end(struct amdgpu_ring *ring);
457 void amdgpu_ring_ib_on_emit_cntl(struct amdgpu_ring *ring);
458 void amdgpu_ring_ib_on_emit_ce(struct amdgpu_ring *ring);
459 void amdgpu_ring_ib_on_emit_de(struct amdgpu_ring *ring);
460
461 void amdgpu_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count);
462 void amdgpu_ring_generic_pad_ib(struct amdgpu_ring *ring, struct amdgpu_ib *ib);
463 void amdgpu_ring_commit(struct amdgpu_ring *ring);
464 void amdgpu_ring_undo(struct amdgpu_ring *ring);
465 int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
466 unsigned int max_dw, struct amdgpu_irq_src *irq_src,
467 unsigned int irq_type, unsigned int hw_prio,
468 atomic_t *sched_score);
469 void amdgpu_ring_fini(struct amdgpu_ring *ring);
470 void amdgpu_ring_emit_reg_write_reg_wait_helper(struct amdgpu_ring *ring,
471 uint32_t reg0, uint32_t val0,
472 uint32_t reg1, uint32_t val1);
473 bool amdgpu_ring_soft_recovery(struct amdgpu_ring *ring, unsigned int vmid,
474 struct dma_fence *fence);
475
amdgpu_ring_set_preempt_cond_exec(struct amdgpu_ring * ring,bool cond_exec)476 static inline void amdgpu_ring_set_preempt_cond_exec(struct amdgpu_ring *ring,
477 bool cond_exec)
478 {
479 *ring->cond_exe_cpu_addr = cond_exec;
480 }
481
amdgpu_ring_clear_ring(struct amdgpu_ring * ring)482 static inline void amdgpu_ring_clear_ring(struct amdgpu_ring *ring)
483 {
484 memset32(ring->ring, ring->funcs->nop, ring->buf_mask + 1);
485 }
486
amdgpu_ring_write(struct amdgpu_ring * ring,uint32_t v)487 static inline void amdgpu_ring_write(struct amdgpu_ring *ring, uint32_t v)
488 {
489 ring->ring[ring->wptr++ & ring->buf_mask] = v;
490 ring->wptr &= ring->ptr_mask;
491 ring->count_dw--;
492 }
493
amdgpu_ring_write_multiple(struct amdgpu_ring * ring,void * src,int count_dw)494 static inline void amdgpu_ring_write_multiple(struct amdgpu_ring *ring,
495 void *src, int count_dw)
496 {
497 unsigned occupied, chunk1, chunk2;
498
499 occupied = ring->wptr & ring->buf_mask;
500 chunk1 = ring->buf_mask + 1 - occupied;
501 chunk1 = (chunk1 >= count_dw) ? count_dw : chunk1;
502 chunk2 = count_dw - chunk1;
503 chunk1 <<= 2;
504 chunk2 <<= 2;
505
506 if (chunk1)
507 memcpy(&ring->ring[occupied], src, chunk1);
508
509 if (chunk2) {
510 src += chunk1;
511 memcpy(ring->ring, src, chunk2);
512 }
513
514 ring->wptr += count_dw;
515 ring->wptr &= ring->ptr_mask;
516 ring->count_dw -= count_dw;
517 }
518
519 /**
520 * amdgpu_ring_patch_cond_exec - patch dw count of conditional execute
521 * @ring: amdgpu_ring structure
522 * @offset: offset returned by amdgpu_ring_init_cond_exec
523 *
524 * Calculate the dw count and patch it into a cond_exec command.
525 */
amdgpu_ring_patch_cond_exec(struct amdgpu_ring * ring,unsigned int offset)526 static inline void amdgpu_ring_patch_cond_exec(struct amdgpu_ring *ring,
527 unsigned int offset)
528 {
529 unsigned cur;
530
531 if (!ring->funcs->init_cond_exec)
532 return;
533
534 WARN_ON(offset > ring->buf_mask);
535 WARN_ON(ring->ring[offset] != 0);
536
537 cur = (ring->wptr - 1) & ring->buf_mask;
538 if (cur < offset)
539 cur += ring->ring_size >> 2;
540 ring->ring[offset] = cur - offset;
541 }
542
543 int amdgpu_ring_test_helper(struct amdgpu_ring *ring);
544
545 void amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
546 struct amdgpu_ring *ring);
547
548 int amdgpu_ring_init_mqd(struct amdgpu_ring *ring);
549
amdgpu_ib_get_value(struct amdgpu_ib * ib,int idx)550 static inline u32 amdgpu_ib_get_value(struct amdgpu_ib *ib, int idx)
551 {
552 return ib->ptr[idx];
553 }
554
amdgpu_ib_set_value(struct amdgpu_ib * ib,int idx,uint32_t value)555 static inline void amdgpu_ib_set_value(struct amdgpu_ib *ib, int idx,
556 uint32_t value)
557 {
558 ib->ptr[idx] = value;
559 }
560
561 int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm,
562 unsigned size,
563 enum amdgpu_ib_pool_type pool,
564 struct amdgpu_ib *ib);
565 void amdgpu_ib_free(struct amdgpu_ib *ib, struct dma_fence *f);
566 int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
567 struct amdgpu_ib *ibs, struct amdgpu_job *job,
568 struct dma_fence **f);
569 int amdgpu_ib_pool_init(struct amdgpu_device *adev);
570 void amdgpu_ib_pool_fini(struct amdgpu_device *adev);
571 int amdgpu_ib_ring_tests(struct amdgpu_device *adev);
572 bool amdgpu_ring_sched_ready(struct amdgpu_ring *ring);
573 void amdgpu_ring_backup_unprocessed_commands(struct amdgpu_ring *ring,
574 struct amdgpu_fence *guilty_fence);
575 void amdgpu_ring_reset_helper_begin(struct amdgpu_ring *ring,
576 struct amdgpu_fence *guilty_fence);
577 int amdgpu_ring_reset_helper_end(struct amdgpu_ring *ring,
578 struct amdgpu_fence *guilty_fence);
579 bool amdgpu_ring_is_reset_type_supported(struct amdgpu_ring *ring,
580 u32 reset_type);
581 #endif
582