drm/amdgpu: add core driver (v4)

This adds the non-asic specific core driver code.

v2: remove extra kconfig option
v3: implement minor fixes from Fengguang Wu
v4: fix cast in amdgpu_ucode.c

Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 552 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_test.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_test.c
new file mode 100644
index 000000000000..df202999fbfe
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_test.c
@@ -0,0 +1,552 @@
+/*
+ * Copyright 2009 VMware, Inc.
+ *
+ * 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, sublicense,
+ * 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 above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Michel Dänzer
+ */
+#include <drm/drmP.h>
+#include <drm/amdgpu_drm.h>
+#include "amdgpu.h"
+#include "amdgpu_uvd.h"
+#include "amdgpu_vce.h"
+
+/* Test BO GTT->VRAM and VRAM->GTT GPU copies across the whole GTT aperture */
+static void amdgpu_do_test_moves(struct amdgpu_device *adev)
+{
+	struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
+	struct amdgpu_bo *vram_obj = NULL;
+	struct amdgpu_bo **gtt_obj = NULL;
+	uint64_t gtt_addr, vram_addr;
+	unsigned n, size;
+	int i, r;
+
+	size = 1024 * 1024;
+
+	/* Number of tests =
+	 * (Total GTT - IB pool - writeback page - ring buffers) / test size
+	 */
+	n = adev->mc.gtt_size - AMDGPU_IB_POOL_SIZE*64*1024;
+	for (i = 0; i < AMDGPU_MAX_RINGS; ++i)
+		if (adev->rings[i])
+			n -= adev->rings[i]->ring_size;
+	if (adev->wb.wb_obj)
+		n -= AMDGPU_GPU_PAGE_SIZE;
+	if (adev->irq.ih.ring_obj)
+		n -= adev->irq.ih.ring_size;
+	n /= size;
+
+	gtt_obj = kzalloc(n * sizeof(*gtt_obj), GFP_KERNEL);
+	if (!gtt_obj) {
+		DRM_ERROR("Failed to allocate %d pointers\n", n);
+		r = 1;
+		goto out_cleanup;
+	}
+
+	r = amdgpu_bo_create(adev, size, PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_VRAM, 0,
+			     NULL, &vram_obj);
+	if (r) {
+		DRM_ERROR("Failed to create VRAM object\n");
+		goto out_cleanup;
+	}
+	r = amdgpu_bo_reserve(vram_obj, false);
+	if (unlikely(r != 0))
+		goto out_unref;
+	r = amdgpu_bo_pin(vram_obj, AMDGPU_GEM_DOMAIN_VRAM, &vram_addr);
+	if (r) {
+		DRM_ERROR("Failed to pin VRAM object\n");
+		goto out_unres;
+	}
+	for (i = 0; i < n; i++) {
+		void *gtt_map, *vram_map;
+		void **gtt_start, **gtt_end;
+		void **vram_start, **vram_end;
+		struct amdgpu_fence *fence = NULL;
+
+		r = amdgpu_bo_create(adev, size, PAGE_SIZE, true,
+				     AMDGPU_GEM_DOMAIN_GTT, 0, NULL, gtt_obj + i);
+		if (r) {
+			DRM_ERROR("Failed to create GTT object %d\n", i);
+			goto out_lclean;
+		}
+
+		r = amdgpu_bo_reserve(gtt_obj[i], false);
+		if (unlikely(r != 0))
+			goto out_lclean_unref;
+		r = amdgpu_bo_pin(gtt_obj[i], AMDGPU_GEM_DOMAIN_GTT, &gtt_addr);
+		if (r) {
+			DRM_ERROR("Failed to pin GTT object %d\n", i);
+			goto out_lclean_unres;
+		}
+
+		r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
+		if (r) {
+			DRM_ERROR("Failed to map GTT object %d\n", i);
+			goto out_lclean_unpin;
+		}
+
+		for (gtt_start = gtt_map, gtt_end = gtt_map + size;
+		     gtt_start < gtt_end;
+		     gtt_start++)
+			*gtt_start = gtt_start;
+
+		amdgpu_bo_kunmap(gtt_obj[i]);
+
+		r = amdgpu_copy_buffer(ring, gtt_addr, vram_addr,
+				       size, NULL, &fence);
+
+		if (r) {
+			DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
+			goto out_lclean_unpin;
+		}
+
+		r = amdgpu_fence_wait(fence, false);
+		if (r) {
+			DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
+			goto out_lclean_unpin;
+		}
+
+		amdgpu_fence_unref(&fence);
+
+		r = amdgpu_bo_kmap(vram_obj, &vram_map);
+		if (r) {
+			DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
+			goto out_lclean_unpin;
+		}
+
+		for (gtt_start = gtt_map, gtt_end = gtt_map + size,
+		     vram_start = vram_map, vram_end = vram_map + size;
+		     vram_start < vram_end;
+		     gtt_start++, vram_start++) {
+			if (*vram_start != gtt_start) {
+				DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
+					  "expected 0x%p (GTT/VRAM offset "
+					  "0x%16llx/0x%16llx)\n",
+					  i, *vram_start, gtt_start,
+					  (unsigned long long)
+					  (gtt_addr - adev->mc.gtt_start +
+					   (void*)gtt_start - gtt_map),
+					  (unsigned long long)
+					  (vram_addr - adev->mc.vram_start +
+					   (void*)gtt_start - gtt_map));
+				amdgpu_bo_kunmap(vram_obj);
+				goto out_lclean_unpin;
+			}
+			*vram_start = vram_start;
+		}
+
+		amdgpu_bo_kunmap(vram_obj);
+
+		r = amdgpu_copy_buffer(ring, vram_addr, gtt_addr,
+				       size, NULL, &fence);
+
+		if (r) {
+			DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
+			goto out_lclean_unpin;
+		}
+
+		r = amdgpu_fence_wait(fence, false);
+		if (r) {
+			DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
+			goto out_lclean_unpin;
+		}
+
+		amdgpu_fence_unref(&fence);
+
+		r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
+		if (r) {
+			DRM_ERROR("Failed to map GTT object after copy %d\n", i);
+			goto out_lclean_unpin;
+		}
+
+		for (gtt_start = gtt_map, gtt_end = gtt_map + size,
+		     vram_start = vram_map, vram_end = vram_map + size;
+		     gtt_start < gtt_end;
+		     gtt_start++, vram_start++) {
+			if (*gtt_start != vram_start) {
+				DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
+					  "expected 0x%p (VRAM/GTT offset "
+					  "0x%16llx/0x%16llx)\n",
+					  i, *gtt_start, vram_start,
+					  (unsigned long long)
+					  (vram_addr - adev->mc.vram_start +
+					   (void*)vram_start - vram_map),
+					  (unsigned long long)
+					  (gtt_addr - adev->mc.gtt_start +
+					   (void*)vram_start - vram_map));
+				amdgpu_bo_kunmap(gtt_obj[i]);
+				goto out_lclean_unpin;
+			}
+		}
+
+		amdgpu_bo_kunmap(gtt_obj[i]);
+
+		DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
+			 gtt_addr - adev->mc.gtt_start);
+		continue;
+
+out_lclean_unpin:
+		amdgpu_bo_unpin(gtt_obj[i]);
+out_lclean_unres:
+		amdgpu_bo_unreserve(gtt_obj[i]);
+out_lclean_unref:
+		amdgpu_bo_unref(&gtt_obj[i]);
+out_lclean:
+		for (--i; i >= 0; --i) {
+			amdgpu_bo_unpin(gtt_obj[i]);
+			amdgpu_bo_unreserve(gtt_obj[i]);
+			amdgpu_bo_unref(&gtt_obj[i]);
+		}
+		if (fence)
+			amdgpu_fence_unref(&fence);
+		break;
+	}
+
+	amdgpu_bo_unpin(vram_obj);
+out_unres:
+	amdgpu_bo_unreserve(vram_obj);
+out_unref:
+	amdgpu_bo_unref(&vram_obj);
+out_cleanup:
+	kfree(gtt_obj);
+	if (r) {
+		printk(KERN_WARNING "Error while testing BO move.\n");
+	}
+}
+
+void amdgpu_test_moves(struct amdgpu_device *adev)
+{
+	if (adev->mman.buffer_funcs)
+		amdgpu_do_test_moves(adev);
+}
+
+static int amdgpu_test_create_and_emit_fence(struct amdgpu_device *adev,
+					     struct amdgpu_ring *ring,
+					     struct amdgpu_fence **fence)
+{
+	uint32_t handle = ring->idx ^ 0xdeafbeef;
+	int r;
+
+	if (ring == &adev->uvd.ring) {
+		r = amdgpu_uvd_get_create_msg(ring, handle, NULL);
+		if (r) {
+			DRM_ERROR("Failed to get dummy create msg\n");
+			return r;
+		}
+
+		r = amdgpu_uvd_get_destroy_msg(ring, handle, fence);
+		if (r) {
+			DRM_ERROR("Failed to get dummy destroy msg\n");
+			return r;
+		}
+
+	} else if (ring == &adev->vce.ring[0] ||
+		   ring == &adev->vce.ring[1]) {
+		r = amdgpu_vce_get_create_msg(ring, handle, NULL);
+		if (r) {
+			DRM_ERROR("Failed to get dummy create msg\n");
+			return r;
+		}
+
+		r = amdgpu_vce_get_destroy_msg(ring, handle, fence);
+		if (r) {
+			DRM_ERROR("Failed to get dummy destroy msg\n");
+			return r;
+		}
+
+	} else {
+		r = amdgpu_ring_lock(ring, 64);
+		if (r) {
+			DRM_ERROR("Failed to lock ring A %d\n", ring->idx);
+			return r;
+		}
+		amdgpu_fence_emit(ring, AMDGPU_FENCE_OWNER_UNDEFINED, fence);
+		amdgpu_ring_unlock_commit(ring);
+	}
+	return 0;
+}
+
+void amdgpu_test_ring_sync(struct amdgpu_device *adev,
+			   struct amdgpu_ring *ringA,
+			   struct amdgpu_ring *ringB)
+{
+	struct amdgpu_fence *fence1 = NULL, *fence2 = NULL;
+	struct amdgpu_semaphore *semaphore = NULL;
+	int r;
+
+	r = amdgpu_semaphore_create(adev, &semaphore);
+	if (r) {
+		DRM_ERROR("Failed to create semaphore\n");
+		goto out_cleanup;
+	}
+
+	r = amdgpu_ring_lock(ringA, 64);
+	if (r) {
+		DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
+		goto out_cleanup;
+	}
+	amdgpu_semaphore_emit_wait(ringA, semaphore);
+	amdgpu_ring_unlock_commit(ringA);
+
+	r = amdgpu_test_create_and_emit_fence(adev, ringA, &fence1);
+	if (r)
+		goto out_cleanup;
+
+	r = amdgpu_ring_lock(ringA, 64);
+	if (r) {
+		DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
+		goto out_cleanup;
+	}
+	amdgpu_semaphore_emit_wait(ringA, semaphore);
+	amdgpu_ring_unlock_commit(ringA);
+
+	r = amdgpu_test_create_and_emit_fence(adev, ringA, &fence2);
+	if (r)
+		goto out_cleanup;
+
+	mdelay(1000);
+
+	if (amdgpu_fence_signaled(fence1)) {
+		DRM_ERROR("Fence 1 signaled without waiting for semaphore.\n");
+		goto out_cleanup;
+	}
+
+	r = amdgpu_ring_lock(ringB, 64);
+	if (r) {
+		DRM_ERROR("Failed to lock ring B %p\n", ringB);
+		goto out_cleanup;
+	}
+	amdgpu_semaphore_emit_signal(ringB, semaphore);
+	amdgpu_ring_unlock_commit(ringB);
+
+	r = amdgpu_fence_wait(fence1, false);
+	if (r) {
+		DRM_ERROR("Failed to wait for sync fence 1\n");
+		goto out_cleanup;
+	}
+
+	mdelay(1000);
+
+	if (amdgpu_fence_signaled(fence2)) {
+		DRM_ERROR("Fence 2 signaled without waiting for semaphore.\n");
+		goto out_cleanup;
+	}
+
+	r = amdgpu_ring_lock(ringB, 64);
+	if (r) {
+		DRM_ERROR("Failed to lock ring B %p\n", ringB);
+		goto out_cleanup;
+	}
+	amdgpu_semaphore_emit_signal(ringB, semaphore);
+	amdgpu_ring_unlock_commit(ringB);
+
+	r = amdgpu_fence_wait(fence2, false);
+	if (r) {
+		DRM_ERROR("Failed to wait for sync fence 1\n");
+		goto out_cleanup;
+	}
+
+out_cleanup:
+	amdgpu_semaphore_free(adev, &semaphore, NULL);
+
+	if (fence1)
+		amdgpu_fence_unref(&fence1);
+
+	if (fence2)
+		amdgpu_fence_unref(&fence2);
+
+	if (r)
+		printk(KERN_WARNING "Error while testing ring sync (%d).\n", r);
+}
+
+static void amdgpu_test_ring_sync2(struct amdgpu_device *adev,
+			    struct amdgpu_ring *ringA,
+			    struct amdgpu_ring *ringB,
+			    struct amdgpu_ring *ringC)
+{
+	struct amdgpu_fence *fenceA = NULL, *fenceB = NULL;
+	struct amdgpu_semaphore *semaphore = NULL;
+	bool sigA, sigB;
+	int i, r;
+
+	r = amdgpu_semaphore_create(adev, &semaphore);
+	if (r) {
+		DRM_ERROR("Failed to create semaphore\n");
+		goto out_cleanup;
+	}
+
+	r = amdgpu_ring_lock(ringA, 64);
+	if (r) {
+		DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
+		goto out_cleanup;
+	}
+	amdgpu_semaphore_emit_wait(ringA, semaphore);
+	amdgpu_ring_unlock_commit(ringA);
+
+	r = amdgpu_test_create_and_emit_fence(adev, ringA, &fenceA);
+	if (r)
+		goto out_cleanup;
+
+	r = amdgpu_ring_lock(ringB, 64);
+	if (r) {
+		DRM_ERROR("Failed to lock ring B %d\n", ringB->idx);
+		goto out_cleanup;
+	}
+	amdgpu_semaphore_emit_wait(ringB, semaphore);
+	amdgpu_ring_unlock_commit(ringB);
+	r = amdgpu_test_create_and_emit_fence(adev, ringB, &fenceB);
+	if (r)
+		goto out_cleanup;
+
+	mdelay(1000);
+
+	if (amdgpu_fence_signaled(fenceA)) {
+		DRM_ERROR("Fence A signaled without waiting for semaphore.\n");
+		goto out_cleanup;
+	}
+	if (amdgpu_fence_signaled(fenceB)) {
+		DRM_ERROR("Fence B signaled without waiting for semaphore.\n");
+		goto out_cleanup;
+	}
+
+	r = amdgpu_ring_lock(ringC, 64);
+	if (r) {
+		DRM_ERROR("Failed to lock ring B %p\n", ringC);
+		goto out_cleanup;
+	}
+	amdgpu_semaphore_emit_signal(ringC, semaphore);
+	amdgpu_ring_unlock_commit(ringC);
+
+	for (i = 0; i < 30; ++i) {
+		mdelay(100);
+		sigA = amdgpu_fence_signaled(fenceA);
+		sigB = amdgpu_fence_signaled(fenceB);
+		if (sigA || sigB)
+			break;
+	}
+
+	if (!sigA && !sigB) {
+		DRM_ERROR("Neither fence A nor B has been signaled\n");
+		goto out_cleanup;
+	} else if (sigA && sigB) {
+		DRM_ERROR("Both fence A and B has been signaled\n");
+		goto out_cleanup;
+	}
+
+	DRM_INFO("Fence %c was first signaled\n", sigA ? 'A' : 'B');
+
+	r = amdgpu_ring_lock(ringC, 64);
+	if (r) {
+		DRM_ERROR("Failed to lock ring B %p\n", ringC);
+		goto out_cleanup;
+	}
+	amdgpu_semaphore_emit_signal(ringC, semaphore);
+	amdgpu_ring_unlock_commit(ringC);
+
+	mdelay(1000);
+
+	r = amdgpu_fence_wait(fenceA, false);
+	if (r) {
+		DRM_ERROR("Failed to wait for sync fence A\n");
+		goto out_cleanup;
+	}
+	r = amdgpu_fence_wait(fenceB, false);
+	if (r) {
+		DRM_ERROR("Failed to wait for sync fence B\n");
+		goto out_cleanup;
+	}
+
+out_cleanup:
+	amdgpu_semaphore_free(adev, &semaphore, NULL);
+
+	if (fenceA)
+		amdgpu_fence_unref(&fenceA);
+
+	if (fenceB)
+		amdgpu_fence_unref(&fenceB);
+
+	if (r)
+		printk(KERN_WARNING "Error while testing ring sync (%d).\n", r);
+}
+
+static bool amdgpu_test_sync_possible(struct amdgpu_ring *ringA,
+				      struct amdgpu_ring *ringB)
+{
+	if (ringA == &ringA->adev->vce.ring[0] &&
+	    ringB == &ringB->adev->vce.ring[1])
+		return false;
+
+	return true;
+}
+
+void amdgpu_test_syncing(struct amdgpu_device *adev)
+{
+	int i, j, k;
+
+	for (i = 1; i < AMDGPU_MAX_RINGS; ++i) {
+		struct amdgpu_ring *ringA = adev->rings[i];
+		if (!ringA || !ringA->ready)
+			continue;
+
+		for (j = 0; j < i; ++j) {
+			struct amdgpu_ring *ringB = adev->rings[j];
+			if (!ringB || !ringB->ready)
+				continue;
+
+			if (!amdgpu_test_sync_possible(ringA, ringB))
+				continue;
+
+			DRM_INFO("Testing syncing between rings %d and %d...\n", i, j);
+			amdgpu_test_ring_sync(adev, ringA, ringB);
+
+			DRM_INFO("Testing syncing between rings %d and %d...\n", j, i);
+			amdgpu_test_ring_sync(adev, ringB, ringA);
+
+			for (k = 0; k < j; ++k) {
+				struct amdgpu_ring *ringC = adev->rings[k];
+				if (!ringC || !ringC->ready)
+					continue;
+
+				if (!amdgpu_test_sync_possible(ringA, ringC))
+					continue;
+
+				if (!amdgpu_test_sync_possible(ringB, ringC))
+					continue;
+
+				DRM_INFO("Testing syncing between rings %d, %d and %d...\n", i, j, k);
+				amdgpu_test_ring_sync2(adev, ringA, ringB, ringC);
+
+				DRM_INFO("Testing syncing between rings %d, %d and %d...\n", i, k, j);
+				amdgpu_test_ring_sync2(adev, ringA, ringC, ringB);
+
+				DRM_INFO("Testing syncing between rings %d, %d and %d...\n", j, i, k);
+				amdgpu_test_ring_sync2(adev, ringB, ringA, ringC);
+
+				DRM_INFO("Testing syncing between rings %d, %d and %d...\n", j, k, i);
+				amdgpu_test_ring_sync2(adev, ringB, ringC, ringA);
+
+				DRM_INFO("Testing syncing between rings %d, %d and %d...\n", k, i, j);
+				amdgpu_test_ring_sync2(adev, ringC, ringA, ringB);
+
+				DRM_INFO("Testing syncing between rings %d, %d and %d...\n", k, j, i);
+				amdgpu_test_ring_sync2(adev, ringC, ringB, ringA);
+			}
+		}
+	}
+}