From 517b91f4cde3043d77b2178548473e8545ef07cb Mon Sep 17 00:00:00 2001 From: Shirish S Date: Tue, 4 Jun 2019 21:25:03 +0530 Subject: [PATCH 1/3] drm/amdgpu/{uvd,vcn}: fetch ring's read_ptr after alloc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [What] readptr read always returns zero, since most likely these blocks are either power or clock gated. [How] fetch rptr after amdgpu_ring_alloc() which informs the power management code that the block is about to be used and hence the gating is turned off. Signed-off-by: Louis Li Signed-off-by: Shirish S Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 4 +++- drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c | 5 ++++- drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c | 5 ++++- 3 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c index ecf6f96df2ad..e6b07ece3910 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c @@ -594,7 +594,7 @@ error: int amdgpu_vcn_enc_ring_test_ring(struct amdgpu_ring *ring) { struct amdgpu_device *adev = ring->adev; - uint32_t rptr = amdgpu_ring_get_rptr(ring); + uint32_t rptr; unsigned i; int r; @@ -602,6 +602,8 @@ int amdgpu_vcn_enc_ring_test_ring(struct amdgpu_ring *ring) if (r) return r; + rptr = amdgpu_ring_get_rptr(ring); + amdgpu_ring_write(ring, VCN_ENC_CMD_END); amdgpu_ring_commit(ring); diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c index c9edddf9f88a..be70e6e5f9df 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c @@ -170,13 +170,16 @@ static void uvd_v6_0_enc_ring_set_wptr(struct amdgpu_ring *ring) static int uvd_v6_0_enc_ring_test_ring(struct amdgpu_ring *ring) { struct amdgpu_device *adev = ring->adev; - uint32_t rptr = amdgpu_ring_get_rptr(ring); + uint32_t rptr; unsigned i; int r; r = amdgpu_ring_alloc(ring, 16); if (r) return r; + + rptr = amdgpu_ring_get_rptr(ring); + amdgpu_ring_write(ring, HEVC_ENC_CMD_END); amdgpu_ring_commit(ring); diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c index 2191d3d0a219..fc4f0bb9a2e7 100644 --- a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c @@ -175,7 +175,7 @@ static void uvd_v7_0_enc_ring_set_wptr(struct amdgpu_ring *ring) static int uvd_v7_0_enc_ring_test_ring(struct amdgpu_ring *ring) { struct amdgpu_device *adev = ring->adev; - uint32_t rptr = amdgpu_ring_get_rptr(ring); + uint32_t rptr; unsigned i; int r; @@ -185,6 +185,9 @@ static int uvd_v7_0_enc_ring_test_ring(struct amdgpu_ring *ring) r = amdgpu_ring_alloc(ring, 16); if (r) return r; + + rptr = amdgpu_ring_get_rptr(ring); + amdgpu_ring_write(ring, HEVC_ENC_CMD_END); amdgpu_ring_commit(ring); From 99f304beb82a86713dc4bc1fd65b8dfda25b1f5e Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sat, 8 Jun 2019 12:23:57 +0300 Subject: [PATCH 2/3] drm/amdgpu: Fix bounds checking in amdgpu_ras_is_supported() The "block" variable can be set by the user through debugfs, so it can be quite large which leads to shift wrapping here. This means we report a "block" as supported when it's not, and that leads to array overflows later on. This bug is not really a security issue in real life, because debugfs is generally root only. Fixes: 36ea1bd2d084 ("drm/amdgpu: add debugfs ctrl node") Signed-off-by: Dan Carpenter Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h index eaef5edefc34..24c6e5fcda86 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h @@ -172,6 +172,8 @@ static inline int amdgpu_ras_is_supported(struct amdgpu_device *adev, { struct amdgpu_ras *ras = amdgpu_ras_get_context(adev); + if (block >= AMDGPU_RAS_BLOCK_COUNT) + return 0; return ras && (ras->supported & (1 << block)); } From f3a5231c8f14acd42845e9e60f506b4e948f0e68 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 11 Jun 2019 09:45:51 -0500 Subject: [PATCH 3/3] drm/amdgpu: return 0 by default in amdgpu_pm_load_smu_firmware Fixes SI cards running on amdgpu. Fixes: 1929059893022 ("drm/amd/amdgpu: add RLC firmware to support raven1 refresh") Bug: https://bugs.freedesktop.org/show_bug.cgi?id=110883 Reviewed-by: Evan Quan Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c index 039cfa2ec89d..abeaab4bf1bc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c @@ -2492,7 +2492,7 @@ void amdgpu_pm_print_power_states(struct amdgpu_device *adev) int amdgpu_pm_load_smu_firmware(struct amdgpu_device *adev, uint32_t *smu_version) { - int r = -EINVAL; + int r; if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->load_firmware) { r = adev->powerplay.pp_funcs->load_firmware(adev->powerplay.pp_handle); @@ -2502,7 +2502,7 @@ int amdgpu_pm_load_smu_firmware(struct amdgpu_device *adev, uint32_t *smu_versio } *smu_version = adev->pm.fw_version; } - return r; + return 0; } int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)