kernel/linux.git/drivers/gpu/drm/amd/amdxcp, 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/amd/amdxcp: Fix warnings

2024-05-08T19:17:05+00:00

Range of possible values of pdev_num is 0-63. Use int8_t as data type. That also fixes below warnings: >> drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c:59:58: warning: '%d' >> directive output may be truncated writing between 1 and 11 bytes into >> a region of size 9 [-Wformat-truncation=] 59 | snprintf(dev_name, sizeof(dev_name), "amdgpu_xcp_%d", pdev_num); | ^~ drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c:59:46: note: directive argument in the range [-2147483648, 63] 59 | snprintf(dev_name, sizeof(dev_name), "amdgpu_xcp_%d", pdev_num); | ^~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c:59:9: note: 'snprintf' output between 13 and 23 bytes into a destination of size 20 59 | snprintf(dev_name, sizeof(dev_name), "amdgpu_xcp_%d", pdev_num); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Fixes: 97d814fe4f69 ("drm/amd/amdxcp: Use unique name for partition dev") Signed-off-by: Lijo Lazar Reported-by: kernel test robot Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amd/amdxcp: Use unique name for partition dev

2024-05-02T19:43:55+00:00

amdxcp is a platform driver for creating partition devices. libdrm library identifies a platform device based on 'OF_FULLNAME' or 'MODALIAS'. If two or more devices have the same platform name, drm library only picks the first device. Platform driver core uses name of the device to populate 'MODALIAS'. When 'amdgpu_xcp' is used as the base name, only first partition device gets identified. Assign unique name so that drm library identifies partition devices separately. amdxcp doesn't support probe of partitions, it doesn't bother about modaliases. Signed-off-by: Lijo Lazar Acked-by: Alex Deucher Acked-by: Christian König Acked-by: James Zhu Reviewed-by: Asad Kamal Signed-off-by: Alex Deucher

drm/amdxcp: fix amdxcp unloads incompletely

2023-10-26T23:04:53+00:00

amdxcp unloads incompletely, and below error will be seen during load/unload, sysfs: cannot create duplicate filename '/devices/platform/amdgpu_xcp.0' devres_release_group will free xcp device at first, platform device will be unregistered later in platform_device_unregister. Signed-off-by: James Zhu Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdxcp: fix Makefile to build amdxcp module

2023-06-09T16:32:53+00:00

After drm conduct amdgpu Makefile, amdgpu.ko has been created and "amdgpu-y +=" in amdxcp Makefile isn't used. So modify amdgpu-y to amdxcp-y and build amdxcp module. Signed-off-by: Bob Zhou Reviewed-by: James Zhu Reviewed-by: Guchun Chen Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdxcp: add platform device driver for amdxcp

2023-06-09T15:08:47+00:00

Add platform device driver for amdxcp to support amdgpu spatial partition. -v2: fix build warning Signed-off-by: James Zhu Acked-by: Alex Deucher Signed-off-by: Alex Deucher