1/*
2 * Copyright 2013 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 K├Ânig <christian.koenig@amd.com>
23 */
24
25#include <linux/firmware.h>
26#include <drm/drmP.h>
27#include "radeon.h"
28#include "radeon_asic.h"
29#include "r600d.h"
30
31/**
32 * uvd_v1_0_get_rptr - get read pointer
33 *
34 * @rdev: radeon_device pointer
35 * @ring: radeon_ring pointer
36 *
37 * Returns the current hardware read pointer
38 */
39uint32_t uvd_v1_0_get_rptr(struct radeon_device *rdev,
40 struct radeon_ring *ring)
41{
42 return RREG32(UVD_RBC_RB_RPTR);
43}
44
45/**
46 * uvd_v1_0_get_wptr - get write pointer
47 *
48 * @rdev: radeon_device pointer
49 * @ring: radeon_ring pointer
50 *
51 * Returns the current hardware write pointer
52 */
53uint32_t uvd_v1_0_get_wptr(struct radeon_device *rdev,
54 struct radeon_ring *ring)
55{
56 return RREG32(UVD_RBC_RB_WPTR);
57}
58
59/**
60 * uvd_v1_0_set_wptr - set write pointer
61 *
62 * @rdev: radeon_device pointer
63 * @ring: radeon_ring pointer
64 *
65 * Commits the write pointer to the hardware
66 */
67void uvd_v1_0_set_wptr(struct radeon_device *rdev,
68 struct radeon_ring *ring)
69{
70 WREG32(UVD_RBC_RB_WPTR, ring->wptr);
71}
72
73/**
74 * uvd_v1_0_fence_emit - emit an fence & trap command
75 *
76 * @rdev: radeon_device pointer
77 * @fence: fence to emit
78 *
79 * Write a fence and a trap command to the ring.
80 */
81void uvd_v1_0_fence_emit(struct radeon_device *rdev,
82 struct radeon_fence *fence)
83{
84 struct radeon_ring *ring = &rdev->ring[fence->ring];
85 uint64_t addr = rdev->fence_drv[fence->ring].gpu_addr;
86
87 radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_DATA0, 0));
88 radeon_ring_write(ring, addr & 0xffffffff);
89 radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_DATA1, 0));
90 radeon_ring_write(ring, fence->seq);
91 radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_CMD, 0));
92 radeon_ring_write(ring, 0);
93
94 radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_DATA0, 0));
95 radeon_ring_write(ring, 0);
96 radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_DATA1, 0));
97 radeon_ring_write(ring, 0);
98 radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_CMD, 0));
99 radeon_ring_write(ring, 2);
100 return;
101}
102
103/**
104 * uvd_v1_0_resume - memory controller programming
105 *
106 * @rdev: radeon_device pointer
107 *
108 * Let the UVD memory controller know it's offsets
109 */
110int uvd_v1_0_resume(struct radeon_device *rdev)
111{
112 uint64_t addr;
113 uint32_t size;
114 int r;
115
116 r = radeon_uvd_resume(rdev);
117 if (r)
118 return r;
119
120 /* programm the VCPU memory controller bits 0-27 */
121 addr = (rdev->uvd.gpu_addr >> 3) + 16;
122 size = RADEON_GPU_PAGE_ALIGN(rdev->uvd_fw->size) >> 3;
123 WREG32(UVD_VCPU_CACHE_OFFSET0, addr);
124 WREG32(UVD_VCPU_CACHE_SIZE0, size);
125
126 addr += size;
127 size = RADEON_UVD_HEAP_SIZE >> 3;
128 WREG32(UVD_VCPU_CACHE_OFFSET1, addr);
129 WREG32(UVD_VCPU_CACHE_SIZE1, size);
130
131 addr += size;
132 size = (RADEON_UVD_STACK_SIZE +
133 (RADEON_UVD_SESSION_SIZE * rdev->uvd.max_handles)) >> 3;
134 WREG32(UVD_VCPU_CACHE_OFFSET2, addr);
135 WREG32(UVD_VCPU_CACHE_SIZE2, size);
136
137 /* bits 28-31 */
138 addr = (rdev->uvd.gpu_addr >> 28) & 0xF;
139 WREG32(UVD_LMI_ADDR_EXT, (addr << 12) | (addr << 0));
140
141 /* bits 32-39 */
142 addr = (rdev->uvd.gpu_addr >> 32) & 0xFF;
143 WREG32(UVD_LMI_EXT40_ADDR, addr | (0x9 << 16) | (0x1 << 31));
144
145 WREG32(UVD_FW_START, *((uint32_t*)rdev->uvd.cpu_addr));
146
147 return 0;
148}
149
150/**
151 * uvd_v1_0_init - start and test UVD block
152 *
153 * @rdev: radeon_device pointer
154 *
155 * Initialize the hardware, boot up the VCPU and do some testing
156 */
157int uvd_v1_0_init(struct radeon_device *rdev)
158{
159 struct radeon_ring *ring = &rdev->ring[R600_RING_TYPE_UVD_INDEX];
160 uint32_t tmp;
161 int r;
162
163 /* raise clocks while booting up the VCPU */
164 if (rdev->family < CHIP_RV740)
165 radeon_set_uvd_clocks(rdev, 10000, 10000);
166 else
167 radeon_set_uvd_clocks(rdev, 53300, 40000);
168
169 r = uvd_v1_0_start(rdev);
170 if (r)
171 goto done;
172
173 ring->ready = true;
174 r = radeon_ring_test(rdev, R600_RING_TYPE_UVD_INDEX, ring);
175 if (r) {
176 ring->ready = false;
177 goto done;
178 }
179
180 r = radeon_ring_lock(rdev, ring, 10);
181 if (r) {
182 DRM_ERROR("radeon: ring failed to lock UVD ring (%d).\n", r);
183 goto done;
184 }
185
186 tmp = PACKET0(UVD_SEMA_WAIT_FAULT_TIMEOUT_CNTL, 0);
187 radeon_ring_write(ring, tmp);
188 radeon_ring_write(ring, 0xFFFFF);
189
190 tmp = PACKET0(UVD_SEMA_WAIT_INCOMPLETE_TIMEOUT_CNTL, 0);
191 radeon_ring_write(ring, tmp);
192 radeon_ring_write(ring, 0xFFFFF);
193
194 tmp = PACKET0(UVD_SEMA_SIGNAL_INCOMPLETE_TIMEOUT_CNTL, 0);
195 radeon_ring_write(ring, tmp);
196 radeon_ring_write(ring, 0xFFFFF);
197
198 /* Clear timeout status bits */
199 radeon_ring_write(ring, PACKET0(UVD_SEMA_TIMEOUT_STATUS, 0));
200 radeon_ring_write(ring, 0x8);
201
202 radeon_ring_write(ring, PACKET0(UVD_SEMA_CNTL, 0));
203 radeon_ring_write(ring, 3);
204
205 radeon_ring_unlock_commit(rdev, ring, false);
206
207done:
208 /* lower clocks again */
209 radeon_set_uvd_clocks(rdev, 0, 0);
210
211 if (!r) {
212 switch (rdev->family) {
213 case CHIP_RV610:
214 case CHIP_RV630:
215 case CHIP_RV620:
216 /* 64byte granularity workaround */
217 WREG32(MC_CONFIG, 0);
218 WREG32(MC_CONFIG, 1 << 4);
219 WREG32(RS_DQ_RD_RET_CONF, 0x3f);
220 WREG32(MC_CONFIG, 0x1f);
221
222 /* fall through */
223 case CHIP_RV670:
224 case CHIP_RV635:
225
226 /* write clean workaround */
227 WREG32_P(UVD_VCPU_CNTL, 0x10, ~0x10);
228 break;
229
230 default:
231 /* TODO: Do we need more? */
232 break;
233 }
234
235 DRM_INFO("UVD initialized successfully.\n");
236 }
237
238 return r;
239}
240
241/**
242 * uvd_v1_0_fini - stop the hardware block
243 *
244 * @rdev: radeon_device pointer
245 *
246 * Stop the UVD block, mark ring as not ready any more
247 */
248void uvd_v1_0_fini(struct radeon_device *rdev)
249{
250 struct radeon_ring *ring = &rdev->ring[R600_RING_TYPE_UVD_INDEX];
251
252 uvd_v1_0_stop(rdev);
253 ring->ready = false;
254}
255
256/**
257 * uvd_v1_0_start - start UVD block
258 *
259 * @rdev: radeon_device pointer
260 *
261 * Setup and start the UVD block
262 */
263int uvd_v1_0_start(struct radeon_device *rdev)
264{
265 struct radeon_ring *ring = &rdev->ring[R600_RING_TYPE_UVD_INDEX];
266 uint32_t rb_bufsz;
267 int i, j, r;
268
269 /* disable byte swapping */
270 u32 lmi_swap_cntl = 0;
271 u32 mp_swap_cntl = 0;
272
273 /* disable clock gating */
274 WREG32(UVD_CGC_GATE, 0);
275
276 /* disable interupt */
277 WREG32_P(UVD_MASTINT_EN, 0, ~(1 << 1));
278
279 /* Stall UMC and register bus before resetting VCPU */
280 WREG32_P(UVD_LMI_CTRL2, 1 << 8, ~(1 << 8));
281 WREG32_P(UVD_RB_ARB_CTRL, 1 << 3, ~(1 << 3));
282 mdelay(1);
283
284 /* put LMI, VCPU, RBC etc... into reset */
285 WREG32(UVD_SOFT_RESET, LMI_SOFT_RESET | VCPU_SOFT_RESET |
286 LBSI_SOFT_RESET | RBC_SOFT_RESET | CSM_SOFT_RESET |
287 CXW_SOFT_RESET | TAP_SOFT_RESET | LMI_UMC_SOFT_RESET);
288 mdelay(5);
289
290 /* take UVD block out of reset */
291 WREG32_P(SRBM_SOFT_RESET, 0, ~SOFT_RESET_UVD);
292 mdelay(5);
293
294 /* initialize UVD memory controller */
295 WREG32(UVD_LMI_CTRL, 0x40 | (1 << 8) | (1 << 13) |
296 (1 << 21) | (1 << 9) | (1 << 20));
297
298#ifdef __BIG_ENDIAN
299 /* swap (8 in 32) RB and IB */
300 lmi_swap_cntl = 0xa;
301 mp_swap_cntl = 0;
302#endif
303 WREG32(UVD_LMI_SWAP_CNTL, lmi_swap_cntl);
304 WREG32(UVD_MP_SWAP_CNTL, mp_swap_cntl);
305
306 WREG32(UVD_MPC_SET_MUXA0, 0x40c2040);
307 WREG32(UVD_MPC_SET_MUXA1, 0x0);
308 WREG32(UVD_MPC_SET_MUXB0, 0x40c2040);
309 WREG32(UVD_MPC_SET_MUXB1, 0x0);
310 WREG32(UVD_MPC_SET_ALU, 0);
311 WREG32(UVD_MPC_SET_MUX, 0x88);
312
313 /* take all subblocks out of reset, except VCPU */
314 WREG32(UVD_SOFT_RESET, VCPU_SOFT_RESET);
315 mdelay(5);
316
317 /* enable VCPU clock */
318 WREG32(UVD_VCPU_CNTL, 1 << 9);
319
320 /* enable UMC */
321 WREG32_P(UVD_LMI_CTRL2, 0, ~(1 << 8));
322
323 WREG32_P(UVD_RB_ARB_CTRL, 0, ~(1 << 3));
324
325 /* boot up the VCPU */
326 WREG32(UVD_SOFT_RESET, 0);
327 mdelay(10);
328
329 for (i = 0; i < 10; ++i) {
330 uint32_t status;
331 for (j = 0; j < 100; ++j) {
332 status = RREG32(UVD_STATUS);
333 if (status & 2)
334 break;
335 mdelay(10);
336 }
337 r = 0;
338 if (status & 2)
339 break;
340
341 DRM_ERROR("UVD not responding, trying to reset the VCPU!!!\n");
342 WREG32_P(UVD_SOFT_RESET, VCPU_SOFT_RESET, ~VCPU_SOFT_RESET);
343 mdelay(10);
344 WREG32_P(UVD_SOFT_RESET, 0, ~VCPU_SOFT_RESET);
345 mdelay(10);
346 r = -1;
347 }
348
349 if (r) {
350 DRM_ERROR("UVD not responding, giving up!!!\n");
351 return r;
352 }
353
354 /* enable interupt */
355 WREG32_P(UVD_MASTINT_EN, 3<<1, ~(3 << 1));
356
357 /* force RBC into idle state */
358 WREG32(UVD_RBC_RB_CNTL, 0x11010101);
359
360 /* Set the write pointer delay */
361 WREG32(UVD_RBC_RB_WPTR_CNTL, 0);
362
363 /* programm the 4GB memory segment for rptr and ring buffer */
364 WREG32(UVD_LMI_EXT40_ADDR, upper_32_bits(ring->gpu_addr) |
365 (0x7 << 16) | (0x1 << 31));
366
367 /* Initialize the ring buffer's read and write pointers */
368 WREG32(UVD_RBC_RB_RPTR, 0x0);
369
370 ring->wptr = RREG32(UVD_RBC_RB_RPTR);
371 WREG32(UVD_RBC_RB_WPTR, ring->wptr);
372
373 /* set the ring address */
374 WREG32(UVD_RBC_RB_BASE, ring->gpu_addr);
375
376 /* Set ring buffer size */
377 rb_bufsz = order_base_2(ring->ring_size);
378 rb_bufsz = (0x1 << 8) | rb_bufsz;
379 WREG32_P(UVD_RBC_RB_CNTL, rb_bufsz, ~0x11f1f);
380
381 return 0;
382}
383
384/**
385 * uvd_v1_0_stop - stop UVD block
386 *
387 * @rdev: radeon_device pointer
388 *
389 * stop the UVD block
390 */
391void uvd_v1_0_stop(struct radeon_device *rdev)
392{
393 /* force RBC into idle state */
394 WREG32(UVD_RBC_RB_CNTL, 0x11010101);
395
396 /* Stall UMC and register bus before resetting VCPU */
397 WREG32_P(UVD_LMI_CTRL2, 1 << 8, ~(1 << 8));
398 WREG32_P(UVD_RB_ARB_CTRL, 1 << 3, ~(1 << 3));
399 mdelay(1);
400
401 /* put VCPU into reset */
402 WREG32(UVD_SOFT_RESET, VCPU_SOFT_RESET);
403 mdelay(5);
404
405 /* disable VCPU clock */
406 WREG32(UVD_VCPU_CNTL, 0x0);
407
408 /* Unstall UMC and register bus */
409 WREG32_P(UVD_LMI_CTRL2, 0, ~(1 << 8));
410 WREG32_P(UVD_RB_ARB_CTRL, 0, ~(1 << 3));
411}
412
413/**
414 * uvd_v1_0_ring_test - register write test
415 *
416 * @rdev: radeon_device pointer
417 * @ring: radeon_ring pointer
418 *
419 * Test if we can successfully write to the context register
420 */
421int uvd_v1_0_ring_test(struct radeon_device *rdev, struct radeon_ring *ring)
422{
423 uint32_t tmp = 0;
424 unsigned i;
425 int r;
426
427 WREG32(UVD_CONTEXT_ID, 0xCAFEDEAD);
428 r = radeon_ring_lock(rdev, ring, 3);
429 if (r) {
430 DRM_ERROR("radeon: cp failed to lock ring %d (%d).\n",
431 ring->idx, r);
432 return r;
433 }
434 radeon_ring_write(ring, PACKET0(UVD_CONTEXT_ID, 0));
435 radeon_ring_write(ring, 0xDEADBEEF);
436 radeon_ring_unlock_commit(rdev, ring, false);
437 for (i = 0; i < rdev->usec_timeout; i++) {
438 tmp = RREG32(UVD_CONTEXT_ID);
439 if (tmp == 0xDEADBEEF)
440 break;
441 DRM_UDELAY(1);
442 }
443
444 if (i < rdev->usec_timeout) {
445 DRM_INFO("ring test on %d succeeded in %d usecs\n",
446 ring->idx, i);
447 } else {
448 DRM_ERROR("radeon: ring %d test failed (0x%08X)\n",
449 ring->idx, tmp);
450 r = -EINVAL;
451 }
452 return r;
453}
454
455/**
456 * uvd_v1_0_semaphore_emit - emit semaphore command
457 *
458 * @rdev: radeon_device pointer
459 * @ring: radeon_ring pointer
460 * @semaphore: semaphore to emit commands for
461 * @emit_wait: true if we should emit a wait command
462 *
463 * Emit a semaphore command (either wait or signal) to the UVD ring.
464 */
465bool uvd_v1_0_semaphore_emit(struct radeon_device *rdev,
466 struct radeon_ring *ring,
467 struct radeon_semaphore *semaphore,
468 bool emit_wait)
469{
470 /* disable semaphores for UVD V1 hardware */
471 return false;
472}
473
474/**
475 * uvd_v1_0_ib_execute - execute indirect buffer
476 *
477 * @rdev: radeon_device pointer
478 * @ib: indirect buffer to execute
479 *
480 * Write ring commands to execute the indirect buffer
481 */
482void uvd_v1_0_ib_execute(struct radeon_device *rdev, struct radeon_ib *ib)
483{
484 struct radeon_ring *ring = &rdev->ring[ib->ring];
485
486 radeon_ring_write(ring, PACKET0(UVD_RBC_IB_BASE, 0));
487 radeon_ring_write(ring, ib->gpu_addr);
488 radeon_ring_write(ring, PACKET0(UVD_RBC_IB_SIZE, 0));
489 radeon_ring_write(ring, ib->length_dw);
490}
491
492/**
493 * uvd_v1_0_ib_test - test ib execution
494 *
495 * @rdev: radeon_device pointer
496 * @ring: radeon_ring pointer
497 *
498 * Test if we can successfully execute an IB
499 */
500int uvd_v1_0_ib_test(struct radeon_device *rdev, struct radeon_ring *ring)
501{
502 struct radeon_fence *fence = NULL;
503 int r;
504
505 if (rdev->family < CHIP_RV740)
506 r = radeon_set_uvd_clocks(rdev, 10000, 10000);
507 else
508 r = radeon_set_uvd_clocks(rdev, 53300, 40000);
509 if (r) {
510 DRM_ERROR("radeon: failed to raise UVD clocks (%d).\n", r);
511 return r;
512 }
513
514 r = radeon_uvd_get_create_msg(rdev, ring->idx, 1, NULL);
515 if (r) {
516 DRM_ERROR("radeon: failed to get create msg (%d).\n", r);
517 goto error;
518 }
519
520 r = radeon_uvd_get_destroy_msg(rdev, ring->idx, 1, &fence);
521 if (r) {
522 DRM_ERROR("radeon: failed to get destroy ib (%d).\n", r);
523 goto error;
524 }
525
526 r = radeon_fence_wait_timeout(fence, false, usecs_to_jiffies(
527 RADEON_USEC_IB_TEST_TIMEOUT));
528 if (r < 0) {
529 DRM_ERROR("radeon: fence wait failed (%d).\n", r);
530 goto error;
531 } else if (r == 0) {
532 DRM_ERROR("radeon: fence wait timed out.\n");
533 r = -ETIMEDOUT;
534 goto error;
535 }
536 r = 0;
537 DRM_INFO("ib test on ring %d succeeded\n", ring->idx);
538error:
539 radeon_fence_unref(&fence);
540 radeon_set_uvd_clocks(rdev, 0, 0);
541 return r;
542}
543