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-rw-r--r--common/recipes-kernel/linux/files/0404-drm-amdgpu-switch-back-to-32bit-hw-fences-v2.patch164
1 files changed, 0 insertions, 164 deletions
diff --git a/common/recipes-kernel/linux/files/0404-drm-amdgpu-switch-back-to-32bit-hw-fences-v2.patch b/common/recipes-kernel/linux/files/0404-drm-amdgpu-switch-back-to-32bit-hw-fences-v2.patch
deleted file mode 100644
index 5dca9545..00000000
--- a/common/recipes-kernel/linux/files/0404-drm-amdgpu-switch-back-to-32bit-hw-fences-v2.patch
+++ /dev/null
@@ -1,164 +0,0 @@
-From 1ba674acd69d4537e78b893d2de7cd9f24c7b146 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
-Date: Mon, 14 Mar 2016 15:46:06 +0100
-Subject: [PATCH 0404/1110] drm/amdgpu: switch back to 32bit hw fences v2
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-We don't need to extend them to 64bits any more, so avoid the extra overhead.
-
-v2: update commit message.
-
-Signed-off-by: Christian König <christian.koenig@amd.com>
-Acked-by: Alex Deucher <alexander.deucher@amd.com>
-Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
----
- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 4 +--
- drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 49 ++++++++++++-------------------
- 2 files changed, 21 insertions(+), 32 deletions(-)
-
-diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
-index 05a0ffb..f1b23e5 100644
---- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
-+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
-@@ -347,8 +347,8 @@ struct amdgpu_fence_driver {
- uint64_t gpu_addr;
- volatile uint32_t *cpu_addr;
- /* sync_seq is protected by ring emission lock */
-- uint64_t sync_seq;
-- atomic64_t last_seq;
-+ uint32_t sync_seq;
-+ atomic_t last_seq;
- bool initialized;
- struct amdgpu_irq_src *irq_src;
- unsigned irq_type;
-diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
-index da9a155..4303b44 100644
---- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
-+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
-@@ -52,7 +52,6 @@ struct amdgpu_fence {
-
- /* RB, DMA, etc. */
- struct amdgpu_ring *ring;
-- uint64_t seq;
- };
-
- static struct kmem_cache *amdgpu_fence_slab;
-@@ -104,7 +103,7 @@ static u32 amdgpu_fence_read(struct amdgpu_ring *ring)
- if (drv->cpu_addr)
- seq = le32_to_cpu(*drv->cpu_addr);
- else
-- seq = lower_32_bits(atomic64_read(&drv->last_seq));
-+ seq = atomic_read(&drv->last_seq);
-
- return seq;
- }
-@@ -123,23 +122,22 @@ int amdgpu_fence_emit(struct amdgpu_ring *ring, struct fence **f)
- struct amdgpu_device *adev = ring->adev;
- struct amdgpu_fence *fence;
- struct fence **ptr;
-- unsigned idx;
-+ uint32_t seq;
-
- fence = kmem_cache_alloc(amdgpu_fence_slab, GFP_KERNEL);
- if (fence == NULL)
- return -ENOMEM;
-
-- fence->seq = ++ring->fence_drv.sync_seq;
-+ seq = ++ring->fence_drv.sync_seq;
- fence->ring = ring;
- fence_init(&fence->base, &amdgpu_fence_ops,
- &ring->fence_drv.lock,
- adev->fence_context + ring->idx,
-- fence->seq);
-+ seq);
- amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,
-- fence->seq, AMDGPU_FENCE_FLAG_INT);
-+ seq, AMDGPU_FENCE_FLAG_INT);
-
-- idx = fence->seq & ring->fence_drv.num_fences_mask;
-- ptr = &ring->fence_drv.fences[idx];
-+ ptr = &ring->fence_drv.fences[seq & ring->fence_drv.num_fences_mask];
- /* This function can't be called concurrently anyway, otherwise
- * emitting the fence would mess up the hardware ring buffer.
- */
-@@ -177,22 +175,16 @@ static void amdgpu_fence_schedule_fallback(struct amdgpu_ring *ring)
- void amdgpu_fence_process(struct amdgpu_ring *ring)
- {
- struct amdgpu_fence_driver *drv = &ring->fence_drv;
-- uint64_t seq, last_seq, last_emitted;
-+ uint32_t seq, last_seq;
- int r;
-
- do {
-- last_seq = atomic64_read(&ring->fence_drv.last_seq);
-- last_emitted = ring->fence_drv.sync_seq;
-+ last_seq = atomic_read(&ring->fence_drv.last_seq);
- seq = amdgpu_fence_read(ring);
-- seq |= last_seq & 0xffffffff00000000LL;
-- if (seq < last_seq) {
-- seq &= 0xffffffff;
-- seq |= last_emitted & 0xffffffff00000000LL;
-- }
-
-- } while (atomic64_cmpxchg(&drv->last_seq, last_seq, seq) != last_seq);
-+ } while (atomic_cmpxchg(&drv->last_seq, last_seq, seq) != last_seq);
-
-- if (seq < last_emitted)
-+ if (seq != ring->fence_drv.sync_seq)
- amdgpu_fence_schedule_fallback(ring);
-
- while (last_seq != seq) {
-@@ -279,13 +271,10 @@ unsigned amdgpu_fence_count_emitted(struct amdgpu_ring *ring)
- * but it's ok to report slightly wrong fence count here.
- */
- amdgpu_fence_process(ring);
-- emitted = ring->fence_drv.sync_seq
-- - atomic64_read(&ring->fence_drv.last_seq);
-- /* to avoid 32bits warp around */
-- if (emitted > 0x10000000)
-- emitted = 0x10000000;
--
-- return (unsigned)emitted;
-+ emitted = 0x100000000ull;
-+ emitted -= atomic_read(&ring->fence_drv.last_seq);
-+ emitted += ACCESS_ONCE(ring->fence_drv.sync_seq);
-+ return lower_32_bits(emitted);
- }
-
- /**
-@@ -317,7 +306,7 @@ int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,
- ring->fence_drv.cpu_addr = adev->uvd.cpu_addr + index;
- ring->fence_drv.gpu_addr = adev->uvd.gpu_addr + index;
- }
-- amdgpu_fence_write(ring, atomic64_read(&ring->fence_drv.last_seq));
-+ amdgpu_fence_write(ring, atomic_read(&ring->fence_drv.last_seq));
- amdgpu_irq_get(adev, irq_src, irq_type);
-
- ring->fence_drv.irq_src = irq_src;
-@@ -353,7 +342,7 @@ int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
- ring->fence_drv.cpu_addr = NULL;
- ring->fence_drv.gpu_addr = 0;
- ring->fence_drv.sync_seq = 0;
-- atomic64_set(&ring->fence_drv.last_seq, 0);
-+ atomic_set(&ring->fence_drv.last_seq, 0);
- ring->fence_drv.initialized = false;
-
- setup_timer(&ring->fence_drv.fallback_timer, amdgpu_fence_fallback,
-@@ -621,9 +610,9 @@ static int amdgpu_debugfs_fence_info(struct seq_file *m, void *data)
- amdgpu_fence_process(ring);
-
- seq_printf(m, "--- ring %d (%s) ---\n", i, ring->name);
-- seq_printf(m, "Last signaled fence 0x%016llx\n",
-- (unsigned long long)atomic64_read(&ring->fence_drv.last_seq));
-- seq_printf(m, "Last emitted 0x%016llx\n",
-+ seq_printf(m, "Last signaled fence 0x%08x\n",
-+ atomic_read(&ring->fence_drv.last_seq));
-+ seq_printf(m, "Last emitted 0x%08x\n",
- ring->fence_drv.sync_seq);
- }
- return 0;
---
-2.7.4
-
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-16 19:09:51 +0000