From: Alex Xie Date: Thu, 1 Jun 2017 13:42:59 +0000 (-0400) Subject: drm/amdgpu: Move compute vm bug logic to amdgpu_vm.c X-Git-Tag: v4.14-rc1~484^2~24^2~83 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e59c020598666ffc22c627910667e44ac2412304;p=platform%2Fkernel%2Flinux-rpi.git drm/amdgpu: Move compute vm bug logic to amdgpu_vm.c In review, Christian would like to keep the logic inside amdgpu_vm.c with a cost of slightly slower. The loop is still optimized out with this patch. v2: remove the if statement. Now it is not slower. Signed-off-by: Alex Xie Reviewed-by: Christian König Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index cce94d8..01ee69b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2190,6 +2190,8 @@ int amdgpu_device_init(struct amdgpu_device *adev, adev->accel_working = true; + amdgpu_vm_check_compute_bug(adev); + /* Initialize the buffer migration limit. */ if (amdgpu_moverate >= 0) max_MBps = amdgpu_moverate; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c index cef135e..75165e0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c @@ -155,36 +155,6 @@ void amdgpu_ring_undo(struct amdgpu_ring *ring) } /** - * amdgpu_ring_check_compute_vm_bug - check whether this ring has compute vm bug - * - * @adev: amdgpu_device pointer - * @ring: amdgpu_ring structure holding ring information - */ -static void amdgpu_ring_check_compute_vm_bug(struct amdgpu_device *adev, - struct amdgpu_ring *ring) -{ - const struct amdgpu_ip_block *ip_block; - - ring->has_compute_vm_bug = false; - - if (ring->funcs->type != AMDGPU_RING_TYPE_COMPUTE) - /* only compute rings */ - return; - - ip_block = amdgpu_get_ip_block(adev, AMD_IP_BLOCK_TYPE_GFX); - if (!ip_block) - return; - - /* Compute ring has a VM bug for GFX version < 7. - And compute ring has a VM bug for GFX 8 MEC firmware version < 673.*/ - if (ip_block->version->major <= 7) { - ring->has_compute_vm_bug = true; - } else if (ip_block->version->major == 8) - if (adev->gfx.mec_fw_version < 673) - ring->has_compute_vm_bug = true; -} - -/** * amdgpu_ring_init - init driver ring struct. * * @adev: amdgpu_device pointer @@ -292,8 +262,6 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring, DRM_ERROR("Failed to register debugfs file for rings !\n"); } - amdgpu_ring_check_compute_vm_bug(adev, ring); - return 0; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h index a1dd907..bc8dec9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h @@ -212,9 +212,4 @@ static inline void amdgpu_ring_clear_ring(struct amdgpu_ring *ring) } -static inline bool amdgpu_ring_has_compute_vm_bug(struct amdgpu_ring *ring) -{ - return ring->has_compute_vm_bug; -} - #endif diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index d4d05a8..6e32748 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -656,6 +656,41 @@ unlock: return r; } +/** + * amdgpu_vm_check_compute_bug - check whether asic has compute vm bug + * + * @adev: amdgpu_device pointer + */ +void amdgpu_vm_check_compute_bug(struct amdgpu_device *adev) +{ + const struct amdgpu_ip_block *ip_block; + bool has_compute_vm_bug; + struct amdgpu_ring *ring; + int i; + + has_compute_vm_bug = false; + + ip_block = amdgpu_get_ip_block(adev, AMD_IP_BLOCK_TYPE_GFX); + if (ip_block) { + /* Compute has a VM bug for GFX version < 7. + Compute has a VM bug for GFX 8 MEC firmware version < 673.*/ + if (ip_block->version->major <= 7) + has_compute_vm_bug = true; + else if (ip_block->version->major == 8) + if (adev->gfx.mec_fw_version < 673) + has_compute_vm_bug = true; + } + + for (i = 0; i < adev->num_rings; i++) { + ring = adev->rings[i]; + if (ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE) + /* only compute rings */ + ring->has_compute_vm_bug = has_compute_vm_bug; + else + ring->has_compute_vm_bug = false; + } +} + bool amdgpu_vm_need_pipeline_sync(struct amdgpu_ring *ring, struct amdgpu_job *job) { @@ -664,8 +699,7 @@ bool amdgpu_vm_need_pipeline_sync(struct amdgpu_ring *ring, struct amdgpu_vm_id_manager *id_mgr = &adev->vm_manager.id_mgr[vmhub]; struct amdgpu_vm_id *id; bool gds_switch_needed; - bool vm_flush_needed = job->vm_needs_flush || - amdgpu_ring_has_compute_vm_bug(ring); + bool vm_flush_needed = job->vm_needs_flush || ring->has_compute_vm_bug; if (job->vm_id == 0) return false; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index 8309bc7..f5dba9c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -245,5 +245,6 @@ void amdgpu_vm_adjust_size(struct amdgpu_device *adev, uint64_t vm_size); int amdgpu_vm_ioctl(struct drm_device *dev, void *data, struct drm_file *filp); bool amdgpu_vm_need_pipeline_sync(struct amdgpu_ring *ring, struct amdgpu_job *job); +void amdgpu_vm_check_compute_bug(struct amdgpu_device *adev); #endif