kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.h, branch v7.0-rc7

drm/amdgpu/vce1: Ensure VCPU BO is in lower 32-bit address space (v3)

2025-11-12T02:54:18+00:00

Based on research and ideas by Alexandre and Christian. VCE1 actually executes its code from the VCPU BO. Due to various hardware limitations, the VCE1 requires the VCPU BO to be in the low 32 bit address range. However, VRAM is typically mapped at the high address range, which means the VCPU can't access VRAM through the FB aperture. To solve this, we write a few page table entries to map the VCPU BO in the GART address range. And we make sure that the GART is located at the low address range. That way the VCE1 can access the VCPU BO. v2: - Adjust to v2 of the GART helper commit. - Add empty line to multi-line comment. v3: - Instead of relying on gmc_v6 to set the GART space before GTT, add a new function amdgpu_vce_required_gart_pages() which is called from amdgpu_gtt_mgr_init() directly. Signed-off-by: Timur Kristóf Co-developed-by: Alexandre Demers Signed-off-by: Alexandre Demers Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/vce1: Implement VCE1 IP block (v2)

2025-11-12T02:54:18+00:00

Implement the necessary functionality to support the VCE1. This implementation is based on: - VCE2 code from amdgpu - VCE1 code from radeon (the old driver) - Some trial and error A subsequent commit will ensure correct mapping for the VCPU BO, which will make this actually work. v2: - Use memset_io more. - Use memcpy_toio more. - Remove __func__ from warnings. - Don't reserve and map the VCPU BO anymore. - Add empty line to multi-line comments Signed-off-by: Timur Kristóf Co-developed-by: Alexandre Demers Signed-off-by: Alexandre Demers Acked-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/vce: Move firmware load to amdgpu_vce_early_init

2025-11-12T02:54:18+00:00

Try to load the VCE firmware at early_init. When the correct firmware is not found, return -ENOENT. This way, the driver initialization will complete even without VCE, and the GPU will be functional, albeit without video encoding capabilities. This is necessary because we are planning to add support for the VCE1, and AMD hasn't yet publised the correct firmware for this version. So we need to anticipate that users will try to boot amdgpu on SI GPUs without the correct VCE1 firmware present on their system. Signed-off-by: Timur Kristóf Reviewed-by: Christian König Reviewed-by: Leo Liu Signed-off-by: Alex Deucher

drm/amdgpu: move UVD and VCE sched entity init after sched init

2023-11-10T16:33:08+00:00

We need kernel scheduling entities to deal with handle clean up if apps are not cleaned up properly. With commit 56e449603f0ac5 ("drm/sched: Convert the GPU scheduler to variable number of run-queues") the scheduler entities have to be created after scheduler init, so change the ordering to fix this. v2: Leave logic in UVD and VCE code Fixes: 56e449603f0a ("drm/sched: Convert the GPU scheduler to variable number of run-queues") Reviewed-by: Christian König Reviewed-by: Luben Tuikov Signed-off-by: Alex Deucher Cc: ltuikov89@gmail.com

drm/amdgpu: use job and ib structures directly in CS parsers

2022-03-04T18:03:30+00:00

Instead of providing the ib index provide the job and ib pointers directly to the patch and parse functions for UVD and VCE. Also move the set/get functions for IB values to the IB declerations. Signed-off-by: Christian König Acked-by: Andrey Grodzovsky Signed-off-by: Alex Deucher

drm/amdgpu/vce: set the priority for each ring

2021-09-01T20:55:11+00:00

VCE has multiple rings. Set the proper priority level for each ring while initializing. Signed-off-by: Satyajit Sahu Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/vce: make some functions static

2019-10-25T20:15:00+00:00

They are not used outside of the file they are defined in. Reviewed-by: James Zhu Acked-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/vce: fix allocation size in enc ring test

2019-10-25T20:15:00+00:00

We need to allocate a large enough buffer for the feedback buffer, otherwise the IB test can overwrite other memory. Reviewed-by: James Zhu Acked-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: add flags to emit_ib interface v2

2019-01-25T21:15:35+00:00

Replace the last bool type parameter with a general flags parameter, to make the last parameter be able to contain more information. v2: drop setting need_ctx_switch = false Reviewed-by: Christian König Reviewed-by: Hawking Zhang Signed-off-by: Jack Xiao Signed-off-by: Alex Deucher

drm/amdgpu: Modify the argument of emit_ib interface

2018-11-05T19:21:50+00:00

use the point of struct amdgpu_job as the function argument instand of vmid, so the other members of struct amdgpu_job can be visit in emit_ib function. v2: add a wrapper for getting the VMID add the job before the ib on the parameter list. v3: refine the wrapper name Reviewed-by: Alex Deucher Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher