kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c, branch v6.12.80

drm/amd/amdgpu: Release xcp drm memory after unplug

2025-11-13T20:34:09+00:00

[ Upstream commit e6c2b0f23221ed43c4cc6f636e9ab7862954d562 ] Add a new API amdgpu_xcp_drm_dev_free(). After unplug xcp device, need to release xcp drm memory etc. Co-developed-by: Jiang Liu Signed-off-by: Jiang Liu Signed-off-by: Meng Li Acked-by: Alex Deucher Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: Initialize VF partition mode

2024-07-10T14:12:28+00:00

For SOCs with GFX v9.4.3, a VF may have multiple compute partitions. Fetch the partition information during init and initialize partition nodes. There is no support to switch partition mode in VF mode, hence disable the same. Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu: Restore partition mode after reset

2023-09-26T20:54:51+00:00

On a full device reset, PSP FW gets unloaded. Hence restore the partition mode by placing a new request. Signed-off-by: Lijo Lazar Reviewed-by: Asad Kamal Acked-by: Alex Deucher Tested-by: Asad Kamal Signed-off-by: Alex Deucher

drm/amdgpu: skip xcp drm device allocation when out of drm resource

2023-08-16T15:34:11+00:00

Return 0 when drm device alloc failed with -ENOSPC in order to allow amdgpu drive loading. But the xcp without drm device node assigned won't be visiable in user space. This helps amdgpu driver loading on system which has more than 64 nodes, the current limitation. The proposal to add more drm nodes is discussed in public, which will support up to 2^20 nodes totally. kernel drm: https://lore.kernel.org/lkml/20230724211428.3831636-1-michal.winiarski@intel.com/T/ libdrm: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/305 Signed-off-by: James Zhu Acked-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdgpu: use a macro to define no xcp partition case

2023-07-18T15:19:02+00:00

~0 as no xcp partition is used in several places, so improve its definition by a macro for code consistency. Suggested-by: Christian König Signed-off-by: Guchun Chen Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdgpu: share drm device for pci amdgpu device with 1st partition device

2023-06-30T17:12:15+00:00

To save render node resoure, share drm device setting for pci amdgpu device with 1st XCP partition device. Signed-off-by: James Zhu Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: Move calculation of xcp per memory node

2023-06-23T19:31:55+00:00

Its value is required for finding the memory id of xcp. Fixes: d26ea1b346e7 ("drm/amdgpu: Add xcp manager num_xcp_per_mem_partition") Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu: use amdxcp platform device as spatial partition

2023-06-09T15:08:58+00:00

Use amdxcp platform device as spatial partition device. -v2: remove unused variable Signed-off-by: James Zhu Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: save/restore part of xcp drm_device fields

2023-06-09T15:07:12+00:00

Redirect xcp allocated drm_device::rdev/pdev/driver with amdgpu pci_device/drm_device setting. They need be saved before redirect and restored after unregister xcp drm_device. -v2: fix warning discarded-qualifiers Signed-off-by: James Zhu Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: Fix warnings

2023-06-09T14:56:58+00:00

Fix warnings reported by kernel test bot/smatch smatch warnings: drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c:65 amdgpu_xcp_run_transition() error: buffer overflow 'xcp_mgr->xcp' 8 <= 8 Reported-by: kernel test robot Reported-by: Dan Carpenter Link: https://lore.kernel.org/r/202305231453.I0bXngYn-lkp@intel.com/ Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher