2 * Copyright 2011 Advanced Micro Devices, Inc.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
16 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
17 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
19 * USE OR OTHER DEALINGS IN THE SOFTWARE.
21 * The above copyright notice and this permission notice (including the
22 * next paragraph) shall be included in all copies or substantial portions
28 * Christian König <deathsimple@vodafone.de>
31 #include <linux/firmware.h>
32 #include <linux/module.h>
39 /* 1 second timeout */
40 #define UVD_IDLE_TIMEOUT_MS 1000
43 #define FIRMWARE_R600 "radeon/R600_uvd.bin"
44 #define FIRMWARE_RS780 "radeon/RS780_uvd.bin"
45 #define FIRMWARE_RV770 "radeon/RV770_uvd.bin"
46 #define FIRMWARE_RV710 "radeon/RV710_uvd.bin"
47 #define FIRMWARE_CYPRESS "radeon/CYPRESS_uvd.bin"
48 #define FIRMWARE_SUMO "radeon/SUMO_uvd.bin"
49 #define FIRMWARE_TAHITI "radeon/TAHITI_uvd.bin"
50 #define FIRMWARE_BONAIRE "radeon/BONAIRE_uvd.bin"
52 MODULE_FIRMWARE(FIRMWARE_R600);
53 MODULE_FIRMWARE(FIRMWARE_RS780);
54 MODULE_FIRMWARE(FIRMWARE_RV770);
55 MODULE_FIRMWARE(FIRMWARE_RV710);
56 MODULE_FIRMWARE(FIRMWARE_CYPRESS);
57 MODULE_FIRMWARE(FIRMWARE_SUMO);
58 MODULE_FIRMWARE(FIRMWARE_TAHITI);
59 MODULE_FIRMWARE(FIRMWARE_BONAIRE);
61 static void radeon_uvd_idle_work_handler(struct work_struct *work);
63 int radeon_uvd_init(struct radeon_device *rdev)
65 unsigned long bo_size;
69 INIT_DELAYED_WORK(&rdev->uvd.idle_work, radeon_uvd_idle_work_handler);
71 switch (rdev->family) {
77 fw_name = FIRMWARE_R600;
82 fw_name = FIRMWARE_RS780;
86 fw_name = FIRMWARE_RV770;
92 fw_name = FIRMWARE_RV710;
100 fw_name = FIRMWARE_CYPRESS;
110 fw_name = FIRMWARE_SUMO;
118 fw_name = FIRMWARE_TAHITI;
126 fw_name = FIRMWARE_BONAIRE;
133 r = request_firmware(&rdev->uvd_fw, fw_name, rdev->dev);
135 dev_err(rdev->dev, "radeon_uvd: Can't load firmware \"%s\"\n",
140 bo_size = RADEON_GPU_PAGE_ALIGN(rdev->uvd_fw->size + 8) +
141 RADEON_UVD_STACK_SIZE + RADEON_UVD_HEAP_SIZE +
142 RADEON_GPU_PAGE_SIZE;
143 r = radeon_bo_create(rdev, bo_size, PAGE_SIZE, true,
144 RADEON_GEM_DOMAIN_VRAM, 0, NULL,
145 NULL, &rdev->uvd.vcpu_bo);
147 dev_err(rdev->dev, "(%d) failed to allocate UVD bo\n", r);
151 r = radeon_bo_reserve(rdev->uvd.vcpu_bo, false);
153 radeon_bo_unref(&rdev->uvd.vcpu_bo);
154 dev_err(rdev->dev, "(%d) failed to reserve UVD bo\n", r);
158 r = radeon_bo_pin(rdev->uvd.vcpu_bo, RADEON_GEM_DOMAIN_VRAM,
159 &rdev->uvd.gpu_addr);
161 radeon_bo_unreserve(rdev->uvd.vcpu_bo);
162 radeon_bo_unref(&rdev->uvd.vcpu_bo);
163 dev_err(rdev->dev, "(%d) UVD bo pin failed\n", r);
167 r = radeon_bo_kmap(rdev->uvd.vcpu_bo, &rdev->uvd.cpu_addr);
169 dev_err(rdev->dev, "(%d) UVD map failed\n", r);
173 radeon_bo_unreserve(rdev->uvd.vcpu_bo);
175 for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
176 atomic_set(&rdev->uvd.handles[i], 0);
177 rdev->uvd.filp[i] = NULL;
178 rdev->uvd.img_size[i] = 0;
184 void radeon_uvd_fini(struct radeon_device *rdev)
188 if (rdev->uvd.vcpu_bo == NULL)
191 r = radeon_bo_reserve(rdev->uvd.vcpu_bo, false);
193 radeon_bo_kunmap(rdev->uvd.vcpu_bo);
194 radeon_bo_unpin(rdev->uvd.vcpu_bo);
195 radeon_bo_unreserve(rdev->uvd.vcpu_bo);
198 radeon_bo_unref(&rdev->uvd.vcpu_bo);
200 radeon_ring_fini(rdev, &rdev->ring[R600_RING_TYPE_UVD_INDEX]);
202 release_firmware(rdev->uvd_fw);
205 int radeon_uvd_suspend(struct radeon_device *rdev)
209 if (rdev->uvd.vcpu_bo == NULL)
212 for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
213 uint32_t handle = atomic_read(&rdev->uvd.handles[i]);
215 struct radeon_fence *fence;
217 radeon_uvd_note_usage(rdev);
219 r = radeon_uvd_get_destroy_msg(rdev,
220 R600_RING_TYPE_UVD_INDEX, handle, &fence);
222 DRM_ERROR("Error destroying UVD (%d)!\n", r);
226 radeon_fence_wait(fence, false);
227 radeon_fence_unref(&fence);
229 rdev->uvd.filp[i] = NULL;
230 atomic_set(&rdev->uvd.handles[i], 0);
237 int radeon_uvd_resume(struct radeon_device *rdev)
242 if (rdev->uvd.vcpu_bo == NULL)
245 memcpy(rdev->uvd.cpu_addr, rdev->uvd_fw->data, rdev->uvd_fw->size);
247 size = radeon_bo_size(rdev->uvd.vcpu_bo);
248 size -= rdev->uvd_fw->size;
250 ptr = rdev->uvd.cpu_addr;
251 ptr += rdev->uvd_fw->size;
253 memset(ptr, 0, size);
258 void radeon_uvd_force_into_uvd_segment(struct radeon_bo *rbo,
259 uint32_t allowed_domains)
263 for (i = 0; i < rbo->placement.num_placement; ++i) {
264 rbo->placements[i].fpfn = 0 >> PAGE_SHIFT;
265 rbo->placements[i].lpfn = (256 * 1024 * 1024) >> PAGE_SHIFT;
268 /* If it must be in VRAM it must be in the first segment as well */
269 if (allowed_domains == RADEON_GEM_DOMAIN_VRAM)
272 /* abort if we already have more than one placement */
273 if (rbo->placement.num_placement > 1)
276 /* add another 256MB segment */
277 rbo->placements[1] = rbo->placements[0];
278 rbo->placements[1].fpfn += (256 * 1024 * 1024) >> PAGE_SHIFT;
279 rbo->placements[1].lpfn += (256 * 1024 * 1024) >> PAGE_SHIFT;
280 rbo->placement.num_placement++;
281 rbo->placement.num_busy_placement++;
284 void radeon_uvd_free_handles(struct radeon_device *rdev, struct drm_file *filp)
287 for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
288 uint32_t handle = atomic_read(&rdev->uvd.handles[i]);
289 if (handle != 0 && rdev->uvd.filp[i] == filp) {
290 struct radeon_fence *fence;
292 radeon_uvd_note_usage(rdev);
294 r = radeon_uvd_get_destroy_msg(rdev,
295 R600_RING_TYPE_UVD_INDEX, handle, &fence);
297 DRM_ERROR("Error destroying UVD (%d)!\n", r);
301 radeon_fence_wait(fence, false);
302 radeon_fence_unref(&fence);
304 rdev->uvd.filp[i] = NULL;
305 atomic_set(&rdev->uvd.handles[i], 0);
310 static int radeon_uvd_cs_msg_decode(uint32_t *msg, unsigned buf_sizes[])
312 unsigned stream_type = msg[4];
313 unsigned width = msg[6];
314 unsigned height = msg[7];
315 unsigned dpb_size = msg[9];
316 unsigned pitch = msg[28];
318 unsigned width_in_mb = width / 16;
319 unsigned height_in_mb = ALIGN(height / 16, 2);
321 unsigned image_size, tmp, min_dpb_size;
323 image_size = width * height;
324 image_size += image_size / 2;
325 image_size = ALIGN(image_size, 1024);
327 switch (stream_type) {
330 /* reference picture buffer */
331 min_dpb_size = image_size * 17;
333 /* macroblock context buffer */
334 min_dpb_size += width_in_mb * height_in_mb * 17 * 192;
336 /* IT surface buffer */
337 min_dpb_size += width_in_mb * height_in_mb * 32;
342 /* reference picture buffer */
343 min_dpb_size = image_size * 3;
346 min_dpb_size += width_in_mb * height_in_mb * 128;
348 /* IT surface buffer */
349 min_dpb_size += width_in_mb * 64;
351 /* DB surface buffer */
352 min_dpb_size += width_in_mb * 128;
355 tmp = max(width_in_mb, height_in_mb);
356 min_dpb_size += ALIGN(tmp * 7 * 16, 64);
361 /* reference picture buffer */
362 min_dpb_size = image_size * 3;
367 /* reference picture buffer */
368 min_dpb_size = image_size * 3;
371 min_dpb_size += width_in_mb * height_in_mb * 64;
373 /* IT surface buffer */
374 min_dpb_size += ALIGN(width_in_mb * height_in_mb * 32, 64);
378 DRM_ERROR("UVD codec not handled %d!\n", stream_type);
383 DRM_ERROR("Invalid UVD decoding target pitch!\n");
387 if (dpb_size < min_dpb_size) {
388 DRM_ERROR("Invalid dpb_size in UVD message (%d / %d)!\n",
389 dpb_size, min_dpb_size);
393 buf_sizes[0x1] = dpb_size;
394 buf_sizes[0x2] = image_size;
398 static int radeon_uvd_validate_codec(struct radeon_cs_parser *p,
399 unsigned stream_type)
401 switch (stream_type) {
404 /* always supported */
409 /* only since UVD 3 */
410 if (p->rdev->family >= CHIP_PALM)
415 DRM_ERROR("UVD codec not supported by hardware %d!\n",
421 static int radeon_uvd_cs_msg(struct radeon_cs_parser *p, struct radeon_bo *bo,
422 unsigned offset, unsigned buf_sizes[])
424 int32_t *msg, msg_type, handle;
425 unsigned img_size = 0;
432 DRM_ERROR("UVD messages must be 64 byte aligned!\n");
436 f = reservation_object_get_excl(bo->tbo.resv);
438 r = radeon_fence_wait((struct radeon_fence *)f, false);
440 DRM_ERROR("Failed waiting for UVD message (%d)!\n", r);
445 r = radeon_bo_kmap(bo, &ptr);
447 DRM_ERROR("Failed mapping the UVD message (%d)!\n", r);
457 DRM_ERROR("Invalid UVD handle!\n");
463 /* it's a create msg, calc image size (width * height) */
464 img_size = msg[7] * msg[8];
466 r = radeon_uvd_validate_codec(p, msg[4]);
467 radeon_bo_kunmap(bo);
471 /* try to alloc a new handle */
472 for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
473 if (atomic_read(&p->rdev->uvd.handles[i]) == handle) {
474 DRM_ERROR("Handle 0x%x already in use!\n", handle);
478 if (!atomic_cmpxchg(&p->rdev->uvd.handles[i], 0, handle)) {
479 p->rdev->uvd.filp[i] = p->filp;
480 p->rdev->uvd.img_size[i] = img_size;
485 DRM_ERROR("No more free UVD handles!\n");
489 /* it's a decode msg, validate codec and calc buffer sizes */
490 r = radeon_uvd_validate_codec(p, msg[4]);
492 r = radeon_uvd_cs_msg_decode(msg, buf_sizes);
493 radeon_bo_kunmap(bo);
497 /* validate the handle */
498 for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
499 if (atomic_read(&p->rdev->uvd.handles[i]) == handle) {
500 if (p->rdev->uvd.filp[i] != p->filp) {
501 DRM_ERROR("UVD handle collision detected!\n");
508 DRM_ERROR("Invalid UVD handle 0x%x!\n", handle);
512 /* it's a destroy msg, free the handle */
513 for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i)
514 atomic_cmpxchg(&p->rdev->uvd.handles[i], handle, 0);
515 radeon_bo_kunmap(bo);
520 DRM_ERROR("Illegal UVD message type (%d)!\n", msg_type);
528 static int radeon_uvd_cs_reloc(struct radeon_cs_parser *p,
529 int data0, int data1,
530 unsigned buf_sizes[], bool *has_msg_cmd)
532 struct radeon_cs_chunk *relocs_chunk;
533 struct radeon_bo_list *reloc;
534 unsigned idx, cmd, offset;
538 relocs_chunk = p->chunk_relocs;
539 offset = radeon_get_ib_value(p, data0);
540 idx = radeon_get_ib_value(p, data1);
541 if (idx >= relocs_chunk->length_dw) {
542 DRM_ERROR("Relocs at %d after relocations chunk end %d !\n",
543 idx, relocs_chunk->length_dw);
547 reloc = &p->relocs[(idx / 4)];
548 start = reloc->gpu_offset;
549 end = start + radeon_bo_size(reloc->robj);
552 p->ib.ptr[data0] = start & 0xFFFFFFFF;
553 p->ib.ptr[data1] = start >> 32;
555 cmd = radeon_get_ib_value(p, p->idx) >> 1;
559 DRM_ERROR("invalid reloc offset %X!\n", offset);
562 if ((end - start) < buf_sizes[cmd]) {
563 DRM_ERROR("buffer (%d) to small (%d / %d)!\n", cmd,
564 (unsigned)(end - start), buf_sizes[cmd]);
568 } else if (cmd != 0x100) {
569 DRM_ERROR("invalid UVD command %X!\n", cmd);
573 if ((start >> 28) != ((end - 1) >> 28)) {
574 DRM_ERROR("reloc %LX-%LX crossing 256MB boundary!\n",
579 /* TODO: is this still necessary on NI+ ? */
580 if ((cmd == 0 || cmd == 0x3) &&
581 (start >> 28) != (p->rdev->uvd.gpu_addr >> 28)) {
582 DRM_ERROR("msg/fb buffer %LX-%LX out of 256MB segment!\n",
589 DRM_ERROR("More than one message in a UVD-IB!\n");
593 r = radeon_uvd_cs_msg(p, reloc->robj, offset, buf_sizes);
596 } else if (!*has_msg_cmd) {
597 DRM_ERROR("Message needed before other commands are send!\n");
604 static int radeon_uvd_cs_reg(struct radeon_cs_parser *p,
605 struct radeon_cs_packet *pkt,
606 int *data0, int *data1,
607 unsigned buf_sizes[],
613 for (i = 0; i <= pkt->count; ++i) {
614 switch (pkt->reg + i*4) {
615 case UVD_GPCOM_VCPU_DATA0:
618 case UVD_GPCOM_VCPU_DATA1:
621 case UVD_GPCOM_VCPU_CMD:
622 r = radeon_uvd_cs_reloc(p, *data0, *data1,
623 buf_sizes, has_msg_cmd);
627 case UVD_ENGINE_CNTL:
630 DRM_ERROR("Invalid reg 0x%X!\n",
639 int radeon_uvd_cs_parse(struct radeon_cs_parser *p)
641 struct radeon_cs_packet pkt;
642 int r, data0 = 0, data1 = 0;
644 /* does the IB has a msg command */
645 bool has_msg_cmd = false;
647 /* minimum buffer sizes */
648 unsigned buf_sizes[] = {
650 [0x00000001] = 32 * 1024 * 1024,
651 [0x00000002] = 2048 * 1152 * 3,
655 if (p->chunk_ib->length_dw % 16) {
656 DRM_ERROR("UVD IB length (%d) not 16 dwords aligned!\n",
657 p->chunk_ib->length_dw);
661 if (p->chunk_relocs == NULL) {
662 DRM_ERROR("No relocation chunk !\n");
668 r = radeon_cs_packet_parse(p, &pkt, p->idx);
672 case RADEON_PACKET_TYPE0:
673 r = radeon_uvd_cs_reg(p, &pkt, &data0, &data1,
674 buf_sizes, &has_msg_cmd);
678 case RADEON_PACKET_TYPE2:
679 p->idx += pkt.count + 2;
682 DRM_ERROR("Unknown packet type %d !\n", pkt.type);
685 } while (p->idx < p->chunk_ib->length_dw);
688 DRM_ERROR("UVD-IBs need a msg command!\n");
695 static int radeon_uvd_send_msg(struct radeon_device *rdev,
696 int ring, uint64_t addr,
697 struct radeon_fence **fence)
702 r = radeon_ib_get(rdev, ring, &ib, NULL, 64);
706 ib.ptr[0] = PACKET0(UVD_GPCOM_VCPU_DATA0, 0);
708 ib.ptr[2] = PACKET0(UVD_GPCOM_VCPU_DATA1, 0);
709 ib.ptr[3] = addr >> 32;
710 ib.ptr[4] = PACKET0(UVD_GPCOM_VCPU_CMD, 0);
712 for (i = 6; i < 16; ++i)
713 ib.ptr[i] = PACKET2(0);
716 r = radeon_ib_schedule(rdev, &ib, NULL, false);
719 *fence = radeon_fence_ref(ib.fence);
721 radeon_ib_free(rdev, &ib);
725 /* multiple fence commands without any stream commands in between can
726 crash the vcpu so just try to emmit a dummy create/destroy msg to
728 int radeon_uvd_get_create_msg(struct radeon_device *rdev, int ring,
729 uint32_t handle, struct radeon_fence **fence)
731 /* we use the last page of the vcpu bo for the UVD message */
732 uint64_t offs = radeon_bo_size(rdev->uvd.vcpu_bo) -
733 RADEON_GPU_PAGE_SIZE;
735 uint32_t *msg = rdev->uvd.cpu_addr + offs;
736 uint64_t addr = rdev->uvd.gpu_addr + offs;
740 r = radeon_bo_reserve(rdev->uvd.vcpu_bo, true);
744 /* stitch together an UVD create msg */
745 msg[0] = cpu_to_le32(0x00000de4);
746 msg[1] = cpu_to_le32(0x00000000);
747 msg[2] = cpu_to_le32(handle);
748 msg[3] = cpu_to_le32(0x00000000);
749 msg[4] = cpu_to_le32(0x00000000);
750 msg[5] = cpu_to_le32(0x00000000);
751 msg[6] = cpu_to_le32(0x00000000);
752 msg[7] = cpu_to_le32(0x00000780);
753 msg[8] = cpu_to_le32(0x00000440);
754 msg[9] = cpu_to_le32(0x00000000);
755 msg[10] = cpu_to_le32(0x01b37000);
756 for (i = 11; i < 1024; ++i)
757 msg[i] = cpu_to_le32(0x0);
759 r = radeon_uvd_send_msg(rdev, ring, addr, fence);
760 radeon_bo_unreserve(rdev->uvd.vcpu_bo);
764 int radeon_uvd_get_destroy_msg(struct radeon_device *rdev, int ring,
765 uint32_t handle, struct radeon_fence **fence)
767 /* we use the last page of the vcpu bo for the UVD message */
768 uint64_t offs = radeon_bo_size(rdev->uvd.vcpu_bo) -
769 RADEON_GPU_PAGE_SIZE;
771 uint32_t *msg = rdev->uvd.cpu_addr + offs;
772 uint64_t addr = rdev->uvd.gpu_addr + offs;
776 r = radeon_bo_reserve(rdev->uvd.vcpu_bo, true);
780 /* stitch together an UVD destroy msg */
781 msg[0] = cpu_to_le32(0x00000de4);
782 msg[1] = cpu_to_le32(0x00000002);
783 msg[2] = cpu_to_le32(handle);
784 msg[3] = cpu_to_le32(0x00000000);
785 for (i = 4; i < 1024; ++i)
786 msg[i] = cpu_to_le32(0x0);
788 r = radeon_uvd_send_msg(rdev, ring, addr, fence);
789 radeon_bo_unreserve(rdev->uvd.vcpu_bo);
794 * radeon_uvd_count_handles - count number of open streams
796 * @rdev: radeon_device pointer
797 * @sd: number of SD streams
798 * @hd: number of HD streams
800 * Count the number of open SD/HD streams as a hint for power mangement
802 static void radeon_uvd_count_handles(struct radeon_device *rdev,
803 unsigned *sd, unsigned *hd)
810 for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
811 if (!atomic_read(&rdev->uvd.handles[i]))
814 if (rdev->uvd.img_size[i] >= 720*576)
821 static void radeon_uvd_idle_work_handler(struct work_struct *work)
823 struct radeon_device *rdev =
824 container_of(work, struct radeon_device, uvd.idle_work.work);
826 if (radeon_fence_count_emitted(rdev, R600_RING_TYPE_UVD_INDEX) == 0) {
827 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
828 radeon_uvd_count_handles(rdev, &rdev->pm.dpm.sd,
830 radeon_dpm_enable_uvd(rdev, false);
832 radeon_set_uvd_clocks(rdev, 0, 0);
835 schedule_delayed_work(&rdev->uvd.idle_work,
836 msecs_to_jiffies(UVD_IDLE_TIMEOUT_MS));
840 void radeon_uvd_note_usage(struct radeon_device *rdev)
842 bool streams_changed = false;
843 bool set_clocks = !cancel_delayed_work_sync(&rdev->uvd.idle_work);
844 set_clocks &= schedule_delayed_work(&rdev->uvd.idle_work,
845 msecs_to_jiffies(UVD_IDLE_TIMEOUT_MS));
847 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
848 unsigned hd = 0, sd = 0;
849 radeon_uvd_count_handles(rdev, &sd, &hd);
850 if ((rdev->pm.dpm.sd != sd) ||
851 (rdev->pm.dpm.hd != hd)) {
852 rdev->pm.dpm.sd = sd;
853 rdev->pm.dpm.hd = hd;
854 /* disable this for now */
855 /*streams_changed = true;*/
859 if (set_clocks || streams_changed) {
860 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
861 radeon_dpm_enable_uvd(rdev, true);
863 radeon_set_uvd_clocks(rdev, 53300, 40000);
868 static unsigned radeon_uvd_calc_upll_post_div(unsigned vco_freq,
869 unsigned target_freq,
873 unsigned post_div = vco_freq / target_freq;
875 /* adjust to post divider minimum value */
876 if (post_div < pd_min)
879 /* we alway need a frequency less than or equal the target */
880 if ((vco_freq / post_div) > target_freq)
883 /* post dividers above a certain value must be even */
884 if (post_div > pd_even && post_div % 2)
891 * radeon_uvd_calc_upll_dividers - calc UPLL clock dividers
893 * @rdev: radeon_device pointer
896 * @vco_min: minimum VCO frequency
897 * @vco_max: maximum VCO frequency
898 * @fb_factor: factor to multiply vco freq with
899 * @fb_mask: limit and bitmask for feedback divider
900 * @pd_min: post divider minimum
901 * @pd_max: post divider maximum
902 * @pd_even: post divider must be even above this value
903 * @optimal_fb_div: resulting feedback divider
904 * @optimal_vclk_div: resulting vclk post divider
905 * @optimal_dclk_div: resulting dclk post divider
907 * Calculate dividers for UVDs UPLL (R6xx-SI, except APUs).
908 * Returns zero on success -EINVAL on error.
910 int radeon_uvd_calc_upll_dividers(struct radeon_device *rdev,
911 unsigned vclk, unsigned dclk,
912 unsigned vco_min, unsigned vco_max,
913 unsigned fb_factor, unsigned fb_mask,
914 unsigned pd_min, unsigned pd_max,
916 unsigned *optimal_fb_div,
917 unsigned *optimal_vclk_div,
918 unsigned *optimal_dclk_div)
920 unsigned vco_freq, ref_freq = rdev->clock.spll.reference_freq;
922 /* start off with something large */
923 unsigned optimal_score = ~0;
925 /* loop through vco from low to high */
926 vco_min = max(max(vco_min, vclk), dclk);
927 for (vco_freq = vco_min; vco_freq <= vco_max; vco_freq += 100) {
929 uint64_t fb_div = (uint64_t)vco_freq * fb_factor;
930 unsigned vclk_div, dclk_div, score;
932 do_div(fb_div, ref_freq);
934 /* fb div out of range ? */
935 if (fb_div > fb_mask)
936 break; /* it can oly get worse */
940 /* calc vclk divider with current vco freq */
941 vclk_div = radeon_uvd_calc_upll_post_div(vco_freq, vclk,
943 if (vclk_div > pd_max)
944 break; /* vco is too big, it has to stop */
946 /* calc dclk divider with current vco freq */
947 dclk_div = radeon_uvd_calc_upll_post_div(vco_freq, dclk,
949 if (vclk_div > pd_max)
950 break; /* vco is too big, it has to stop */
952 /* calc score with current vco freq */
953 score = vclk - (vco_freq / vclk_div) + dclk - (vco_freq / dclk_div);
955 /* determine if this vco setting is better than current optimal settings */
956 if (score < optimal_score) {
957 *optimal_fb_div = fb_div;
958 *optimal_vclk_div = vclk_div;
959 *optimal_dclk_div = dclk_div;
960 optimal_score = score;
961 if (optimal_score == 0)
962 break; /* it can't get better than this */
966 /* did we found a valid setup ? */
967 if (optimal_score == ~0)
973 int radeon_uvd_send_upll_ctlreq(struct radeon_device *rdev,
974 unsigned cg_upll_func_cntl)
978 /* make sure UPLL_CTLREQ is deasserted */
979 WREG32_P(cg_upll_func_cntl, 0, ~UPLL_CTLREQ_MASK);
983 /* assert UPLL_CTLREQ */
984 WREG32_P(cg_upll_func_cntl, UPLL_CTLREQ_MASK, ~UPLL_CTLREQ_MASK);
986 /* wait for CTLACK and CTLACK2 to get asserted */
987 for (i = 0; i < 100; ++i) {
988 uint32_t mask = UPLL_CTLACK_MASK | UPLL_CTLACK2_MASK;
989 if ((RREG32(cg_upll_func_cntl) & mask) == mask)
994 /* deassert UPLL_CTLREQ */
995 WREG32_P(cg_upll_func_cntl, 0, ~UPLL_CTLREQ_MASK);
998 DRM_ERROR("Timeout setting UVD clocks!\n");