drm/radeon: UVD bringup v8
Just everything needed to decode videos using UVD.
v6: just all the bugfixes and support for R7xx-SI merged in one patch
v7: UVD_CGC_GATE is a write only register, lockup detection fix
v8: split out VRAM fallback changes, remove support for RV770,
add support for HEMLOCK, add buffer sizes checks
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c
new file mode 100644
index 0000000..05a192e
--- /dev/null
+++ b/drivers/gpu/drm/radeon/radeon_uvd.c
@@ -0,0 +1,664 @@
+/*
+ * Copyright 2011 Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ */
+/*
+ * Authors:
+ * Christian König <deathsimple@vodafone.de>
+ */
+
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <drm/drmP.h>
+#include <drm/drm.h>
+
+#include "radeon.h"
+#include "r600d.h"
+
+/* Firmware Names */
+#define FIRMWARE_RV710 "radeon/RV710_uvd.bin"
+#define FIRMWARE_CYPRESS "radeon/CYPRESS_uvd.bin"
+#define FIRMWARE_SUMO "radeon/SUMO_uvd.bin"
+#define FIRMWARE_TAHITI "radeon/TAHITI_uvd.bin"
+
+MODULE_FIRMWARE(FIRMWARE_RV710);
+MODULE_FIRMWARE(FIRMWARE_CYPRESS);
+MODULE_FIRMWARE(FIRMWARE_SUMO);
+MODULE_FIRMWARE(FIRMWARE_TAHITI);
+
+int radeon_uvd_init(struct radeon_device *rdev)
+{
+ struct platform_device *pdev;
+ unsigned long bo_size;
+ const char *fw_name;
+ int i, r;
+
+ pdev = platform_device_register_simple("radeon_uvd", 0, NULL, 0);
+ r = IS_ERR(pdev);
+ if (r) {
+ dev_err(rdev->dev, "radeon_uvd: Failed to register firmware\n");
+ return -EINVAL;
+ }
+
+ switch (rdev->family) {
+ case CHIP_RV710:
+ case CHIP_RV730:
+ case CHIP_RV740:
+ fw_name = FIRMWARE_RV710;
+ break;
+
+ case CHIP_CYPRESS:
+ case CHIP_HEMLOCK:
+ case CHIP_JUNIPER:
+ case CHIP_REDWOOD:
+ case CHIP_CEDAR:
+ fw_name = FIRMWARE_CYPRESS;
+ break;
+
+ case CHIP_SUMO:
+ case CHIP_SUMO2:
+ case CHIP_PALM:
+ case CHIP_CAYMAN:
+ case CHIP_BARTS:
+ case CHIP_TURKS:
+ case CHIP_CAICOS:
+ fw_name = FIRMWARE_SUMO;
+ break;
+
+ case CHIP_TAHITI:
+ case CHIP_VERDE:
+ case CHIP_PITCAIRN:
+ case CHIP_ARUBA:
+ fw_name = FIRMWARE_TAHITI;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ r = request_firmware(&rdev->uvd_fw, fw_name, &pdev->dev);
+ if (r) {
+ dev_err(rdev->dev, "radeon_uvd: Can't load firmware \"%s\"\n",
+ fw_name);
+ platform_device_unregister(pdev);
+ return r;
+ }
+
+ platform_device_unregister(pdev);
+
+ bo_size = RADEON_GPU_PAGE_ALIGN(rdev->uvd_fw->size + 4) +
+ RADEON_UVD_STACK_SIZE + RADEON_UVD_HEAP_SIZE;
+ r = radeon_bo_create(rdev, bo_size, PAGE_SIZE, true,
+ RADEON_GEM_DOMAIN_VRAM, NULL, &rdev->uvd.vcpu_bo);
+ if (r) {
+ dev_err(rdev->dev, "(%d) failed to allocate UVD bo\n", r);
+ return r;
+ }
+
+ r = radeon_uvd_resume(rdev);
+ if (r)
+ return r;
+
+ memset(rdev->uvd.cpu_addr, 0, bo_size);
+ memcpy(rdev->uvd.cpu_addr, rdev->uvd_fw->data, rdev->uvd_fw->size);
+
+ r = radeon_uvd_suspend(rdev);
+ if (r)
+ return r;
+
+ for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
+ atomic_set(&rdev->uvd.handles[i], 0);
+ rdev->uvd.filp[i] = NULL;
+ }
+
+ return 0;
+}
+
+void radeon_uvd_fini(struct radeon_device *rdev)
+{
+ radeon_uvd_suspend(rdev);
+ radeon_bo_unref(&rdev->uvd.vcpu_bo);
+}
+
+int radeon_uvd_suspend(struct radeon_device *rdev)
+{
+ int r;
+
+ if (rdev->uvd.vcpu_bo == NULL)
+ return 0;
+
+ r = radeon_bo_reserve(rdev->uvd.vcpu_bo, false);
+ if (!r) {
+ radeon_bo_kunmap(rdev->uvd.vcpu_bo);
+ radeon_bo_unpin(rdev->uvd.vcpu_bo);
+ radeon_bo_unreserve(rdev->uvd.vcpu_bo);
+ }
+ return r;
+}
+
+int radeon_uvd_resume(struct radeon_device *rdev)
+{
+ int r;
+
+ if (rdev->uvd.vcpu_bo == NULL)
+ return -EINVAL;
+
+ r = radeon_bo_reserve(rdev->uvd.vcpu_bo, false);
+ if (r) {
+ radeon_bo_unref(&rdev->uvd.vcpu_bo);
+ dev_err(rdev->dev, "(%d) failed to reserve UVD bo\n", r);
+ return r;
+ }
+
+ r = radeon_bo_pin(rdev->uvd.vcpu_bo, RADEON_GEM_DOMAIN_VRAM,
+ &rdev->uvd.gpu_addr);
+ if (r) {
+ radeon_bo_unreserve(rdev->uvd.vcpu_bo);
+ radeon_bo_unref(&rdev->uvd.vcpu_bo);
+ dev_err(rdev->dev, "(%d) UVD bo pin failed\n", r);
+ return r;
+ }
+
+ r = radeon_bo_kmap(rdev->uvd.vcpu_bo, &rdev->uvd.cpu_addr);
+ if (r) {
+ dev_err(rdev->dev, "(%d) UVD map failed\n", r);
+ return r;
+ }
+
+ radeon_bo_unreserve(rdev->uvd.vcpu_bo);
+
+ return 0;
+}
+
+void radeon_uvd_force_into_uvd_segment(struct radeon_bo *rbo)
+{
+ rbo->placement.fpfn = 0 >> PAGE_SHIFT;
+ rbo->placement.lpfn = (256 * 1024 * 1024) >> PAGE_SHIFT;
+}
+
+void radeon_uvd_free_handles(struct radeon_device *rdev, struct drm_file *filp)
+{
+ int i, r;
+ for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
+ if (rdev->uvd.filp[i] == filp) {
+ uint32_t handle = atomic_read(&rdev->uvd.handles[i]);
+ struct radeon_fence *fence;
+
+ r = radeon_uvd_get_destroy_msg(rdev,
+ R600_RING_TYPE_UVD_INDEX, handle, &fence);
+ if (r) {
+ DRM_ERROR("Error destroying UVD (%d)!\n", r);
+ continue;
+ }
+
+ radeon_fence_wait(fence, false);
+ radeon_fence_unref(&fence);
+
+ rdev->uvd.filp[i] = NULL;
+ atomic_set(&rdev->uvd.handles[i], 0);
+ }
+ }
+}
+
+static int radeon_uvd_cs_msg_decode(uint32_t *msg, unsigned buf_sizes[])
+{
+ unsigned stream_type = msg[4];
+ unsigned width = msg[6];
+ unsigned height = msg[7];
+ unsigned dpb_size = msg[9];
+ unsigned pitch = msg[28];
+
+ unsigned width_in_mb = width / 16;
+ unsigned height_in_mb = ALIGN(height / 16, 2);
+
+ unsigned image_size, tmp, min_dpb_size;
+
+ image_size = width * height;
+ image_size += image_size / 2;
+ image_size = ALIGN(image_size, 1024);
+
+ switch (stream_type) {
+ case 0: /* H264 */
+
+ /* reference picture buffer */
+ min_dpb_size = image_size * 17;
+
+ /* macroblock context buffer */
+ min_dpb_size += width_in_mb * height_in_mb * 17 * 192;
+
+ /* IT surface buffer */
+ min_dpb_size += width_in_mb * height_in_mb * 32;
+ break;
+
+ case 1: /* VC1 */
+
+ /* reference picture buffer */
+ min_dpb_size = image_size * 3;
+
+ /* CONTEXT_BUFFER */
+ min_dpb_size += width_in_mb * height_in_mb * 128;
+
+ /* IT surface buffer */
+ min_dpb_size += width_in_mb * 64;
+
+ /* DB surface buffer */
+ min_dpb_size += width_in_mb * 128;
+
+ /* BP */
+ tmp = max(width_in_mb, height_in_mb);
+ min_dpb_size += ALIGN(tmp * 7 * 16, 64);
+ break;
+
+ case 3: /* MPEG2 */
+
+ /* reference picture buffer */
+ min_dpb_size = image_size * 3;
+ break;
+
+ case 4: /* MPEG4 */
+
+ /* reference picture buffer */
+ min_dpb_size = image_size * 3;
+
+ /* CM */
+ min_dpb_size += width_in_mb * height_in_mb * 64;
+
+ /* IT surface buffer */
+ min_dpb_size += ALIGN(width_in_mb * height_in_mb * 32, 64);
+ break;
+
+ default:
+ DRM_ERROR("UVD codec not handled %d!\n", stream_type);
+ return -EINVAL;
+ }
+
+ if (width > pitch) {
+ DRM_ERROR("Invalid UVD decoding target pitch!\n");
+ return -EINVAL;
+ }
+
+ if (dpb_size < min_dpb_size) {
+ DRM_ERROR("Invalid dpb_size in UVD message (%d / %d)!\n",
+ dpb_size, min_dpb_size);
+ return -EINVAL;
+ }
+
+ buf_sizes[0x1] = dpb_size;
+ buf_sizes[0x2] = image_size;
+ return 0;
+}
+
+static int radeon_uvd_cs_msg(struct radeon_cs_parser *p, struct radeon_bo *bo,
+ unsigned offset, unsigned buf_sizes[])
+{
+ int32_t *msg, msg_type, handle;
+ void *ptr;
+
+ int i, r;
+
+ if (offset & 0x3F) {
+ DRM_ERROR("UVD messages must be 64 byte aligned!\n");
+ return -EINVAL;
+ }
+
+ r = radeon_bo_kmap(bo, &ptr);
+ if (r)
+ return r;
+
+ msg = ptr + offset;
+
+ msg_type = msg[1];
+ handle = msg[2];
+
+ if (handle == 0) {
+ DRM_ERROR("Invalid UVD handle!\n");
+ return -EINVAL;
+ }
+
+ if (msg_type == 1) {
+ /* it's a decode msg, calc buffer sizes */
+ r = radeon_uvd_cs_msg_decode(msg, buf_sizes);
+ radeon_bo_kunmap(bo);
+ if (r)
+ return r;
+
+ } else if (msg_type == 2) {
+ /* it's a destroy msg, free the handle */
+ for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i)
+ atomic_cmpxchg(&p->rdev->uvd.handles[i], handle, 0);
+ radeon_bo_kunmap(bo);
+ return 0;
+ } else {
+ /* it's a create msg, no special handling needed */
+ radeon_bo_kunmap(bo);
+ }
+
+ /* create or decode, validate the handle */
+ for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
+ if (atomic_read(&p->rdev->uvd.handles[i]) == handle)
+ return 0;
+ }
+
+ /* handle not found try to alloc a new one */
+ for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
+ if (!atomic_cmpxchg(&p->rdev->uvd.handles[i], 0, handle)) {
+ p->rdev->uvd.filp[i] = p->filp;
+ return 0;
+ }
+ }
+
+ DRM_ERROR("No more free UVD handles!\n");
+ return -EINVAL;
+}
+
+static int radeon_uvd_cs_reloc(struct radeon_cs_parser *p,
+ int data0, int data1,
+ unsigned buf_sizes[])
+{
+ struct radeon_cs_chunk *relocs_chunk;
+ struct radeon_cs_reloc *reloc;
+ unsigned idx, cmd, offset;
+ uint64_t start, end;
+ int r;
+
+ relocs_chunk = &p->chunks[p->chunk_relocs_idx];
+ offset = radeon_get_ib_value(p, data0);
+ idx = radeon_get_ib_value(p, data1);
+ if (idx >= relocs_chunk->length_dw) {
+ DRM_ERROR("Relocs at %d after relocations chunk end %d !\n",
+ idx, relocs_chunk->length_dw);
+ return -EINVAL;
+ }
+
+ reloc = p->relocs_ptr[(idx / 4)];
+ start = reloc->lobj.gpu_offset;
+ end = start + radeon_bo_size(reloc->robj);
+ start += offset;
+
+ p->ib.ptr[data0] = start & 0xFFFFFFFF;
+ p->ib.ptr[data1] = start >> 32;
+
+ cmd = radeon_get_ib_value(p, p->idx) >> 1;
+
+ if (cmd < 0x4) {
+ if ((end - start) < buf_sizes[cmd]) {
+ DRM_ERROR("buffer to small (%d / %d)!\n",
+ (unsigned)(end - start), buf_sizes[cmd]);
+ return -EINVAL;
+ }
+
+ } else if (cmd != 0x100) {
+ DRM_ERROR("invalid UVD command %X!\n", cmd);
+ return -EINVAL;
+ }
+
+ if (cmd == 0) {
+ if (end & 0xFFFFFFFFF0000000) {
+ DRM_ERROR("msg buffer %LX-%LX out of 256MB segment!\n",
+ start, end);
+ return -EINVAL;
+ }
+
+ r = radeon_uvd_cs_msg(p, reloc->robj, offset, buf_sizes);
+ if (r)
+ return r;
+ }
+
+ if ((start & 0xFFFFFFFFF0000000) != (end & 0xFFFFFFFFF0000000)) {
+ DRM_ERROR("reloc %LX-%LX crossing 256MB boundary!\n",
+ start, end);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int radeon_uvd_cs_reg(struct radeon_cs_parser *p,
+ struct radeon_cs_packet *pkt,
+ int *data0, int *data1,
+ unsigned buf_sizes[])
+{
+ int i, r;
+
+ p->idx++;
+ for (i = 0; i <= pkt->count; ++i) {
+ switch (pkt->reg + i*4) {
+ case UVD_GPCOM_VCPU_DATA0:
+ *data0 = p->idx;
+ break;
+ case UVD_GPCOM_VCPU_DATA1:
+ *data1 = p->idx;
+ break;
+ case UVD_GPCOM_VCPU_CMD:
+ r = radeon_uvd_cs_reloc(p, *data0, *data1, buf_sizes);
+ if (r)
+ return r;
+ break;
+ case UVD_ENGINE_CNTL:
+ break;
+ default:
+ DRM_ERROR("Invalid reg 0x%X!\n",
+ pkt->reg + i*4);
+ return -EINVAL;
+ }
+ p->idx++;
+ }
+ return 0;
+}
+
+int radeon_uvd_cs_parse(struct radeon_cs_parser *p)
+{
+ struct radeon_cs_packet pkt;
+ int r, data0 = 0, data1 = 0;
+
+ /* minimum buffer sizes */
+ unsigned buf_sizes[] = {
+ [0x00000000] = 2048,
+ [0x00000001] = 32 * 1024 * 1024,
+ [0x00000002] = 2048 * 1152 * 3,
+ [0x00000003] = 2048,
+ };
+
+ if (p->chunks[p->chunk_ib_idx].length_dw % 16) {
+ DRM_ERROR("UVD IB length (%d) not 16 dwords aligned!\n",
+ p->chunks[p->chunk_ib_idx].length_dw);
+ return -EINVAL;
+ }
+
+ if (p->chunk_relocs_idx == -1) {
+ DRM_ERROR("No relocation chunk !\n");
+ return -EINVAL;
+ }
+
+
+ do {
+ r = radeon_cs_packet_parse(p, &pkt, p->idx);
+ if (r)
+ return r;
+ switch (pkt.type) {
+ case RADEON_PACKET_TYPE0:
+ r = radeon_uvd_cs_reg(p, &pkt, &data0,
+ &data1, buf_sizes);
+ if (r)
+ return r;
+ break;
+ case RADEON_PACKET_TYPE2:
+ p->idx += pkt.count + 2;
+ break;
+ default:
+ DRM_ERROR("Unknown packet type %d !\n", pkt.type);
+ return -EINVAL;
+ }
+ } while (p->idx < p->chunks[p->chunk_ib_idx].length_dw);
+ return 0;
+}
+
+static int radeon_uvd_send_msg(struct radeon_device *rdev,
+ int ring, struct radeon_bo *bo,
+ struct radeon_fence **fence)
+{
+ struct ttm_validate_buffer tv;
+ struct list_head head;
+ struct radeon_ib ib;
+ uint64_t addr;
+ int i, r;
+
+ memset(&tv, 0, sizeof(tv));
+ tv.bo = &bo->tbo;
+
+ INIT_LIST_HEAD(&head);
+ list_add(&tv.head, &head);
+
+ r = ttm_eu_reserve_buffers(&head);
+ if (r)
+ return r;
+
+ radeon_ttm_placement_from_domain(bo, RADEON_GEM_DOMAIN_VRAM);
+ radeon_uvd_force_into_uvd_segment(bo);
+
+ r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
+ if (r) {
+ ttm_eu_backoff_reservation(&head);
+ return r;
+ }
+
+ r = radeon_ib_get(rdev, ring, &ib, NULL, 16);
+ if (r) {
+ ttm_eu_backoff_reservation(&head);
+ return r;
+ }
+
+ addr = radeon_bo_gpu_offset(bo);
+ ib.ptr[0] = PACKET0(UVD_GPCOM_VCPU_DATA0, 0);
+ ib.ptr[1] = addr;
+ ib.ptr[2] = PACKET0(UVD_GPCOM_VCPU_DATA1, 0);
+ ib.ptr[3] = addr >> 32;
+ ib.ptr[4] = PACKET0(UVD_GPCOM_VCPU_CMD, 0);
+ ib.ptr[5] = 0;
+ for (i = 6; i < 16; ++i)
+ ib.ptr[i] = PACKET2(0);
+ ib.length_dw = 16;
+
+ r = radeon_ib_schedule(rdev, &ib, NULL);
+ if (r) {
+ ttm_eu_backoff_reservation(&head);
+ return r;
+ }
+ ttm_eu_fence_buffer_objects(&head, ib.fence);
+
+ if (fence)
+ *fence = radeon_fence_ref(ib.fence);
+
+ radeon_ib_free(rdev, &ib);
+ radeon_bo_unref(&bo);
+ return 0;
+}
+
+/* multiple fence commands without any stream commands in between can
+ crash the vcpu so just try to emmit a dummy create/destroy msg to
+ avoid this */
+int radeon_uvd_get_create_msg(struct radeon_device *rdev, int ring,
+ uint32_t handle, struct radeon_fence **fence)
+{
+ struct radeon_bo *bo;
+ uint32_t *msg;
+ int r, i;
+
+ r = radeon_bo_create(rdev, 1024, PAGE_SIZE, true,
+ RADEON_GEM_DOMAIN_VRAM, NULL, &bo);
+ if (r)
+ return r;
+
+ r = radeon_bo_reserve(bo, false);
+ if (r) {
+ radeon_bo_unref(&bo);
+ return r;
+ }
+
+ r = radeon_bo_kmap(bo, (void **)&msg);
+ if (r) {
+ radeon_bo_unreserve(bo);
+ radeon_bo_unref(&bo);
+ return r;
+ }
+
+ /* stitch together an UVD create msg */
+ msg[0] = 0x00000de4;
+ msg[1] = 0x00000000;
+ msg[2] = handle;
+ msg[3] = 0x00000000;
+ msg[4] = 0x00000000;
+ msg[5] = 0x00000000;
+ msg[6] = 0x00000000;
+ msg[7] = 0x00000780;
+ msg[8] = 0x00000440;
+ msg[9] = 0x00000000;
+ msg[10] = 0x01b37000;
+ for (i = 11; i < 1024; ++i)
+ msg[i] = 0x0;
+
+ radeon_bo_kunmap(bo);
+ radeon_bo_unreserve(bo);
+
+ return radeon_uvd_send_msg(rdev, ring, bo, fence);
+}
+
+int radeon_uvd_get_destroy_msg(struct radeon_device *rdev, int ring,
+ uint32_t handle, struct radeon_fence **fence)
+{
+ struct radeon_bo *bo;
+ uint32_t *msg;
+ int r, i;
+
+ r = radeon_bo_create(rdev, 1024, PAGE_SIZE, true,
+ RADEON_GEM_DOMAIN_VRAM, NULL, &bo);
+ if (r)
+ return r;
+
+ r = radeon_bo_reserve(bo, false);
+ if (r) {
+ radeon_bo_unref(&bo);
+ return r;
+ }
+
+ r = radeon_bo_kmap(bo, (void **)&msg);
+ if (r) {
+ radeon_bo_unreserve(bo);
+ radeon_bo_unref(&bo);
+ return r;
+ }
+
+ /* stitch together an UVD destroy msg */
+ msg[0] = 0x00000de4;
+ msg[1] = 0x00000002;
+ msg[2] = handle;
+ msg[3] = 0x00000000;
+ for (i = 4; i < 1024; ++i)
+ msg[i] = 0x0;
+
+ radeon_bo_kunmap(bo);
+ radeon_bo_unreserve(bo);
+
+ return radeon_uvd_send_msg(rdev, ring, bo, fence);
+}