linux/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c, branch v6.14

drm/amdgpu: Fix off by one in current_memory_partition_show()

2024-10-15T15:26:35Z

The >= ARRAY_SIZE() should be > ARRAY_SIZE() to prevent an out of bounds read. Fixes: 012be6f22c01 ("drm/amdgpu: Add sysfs interfaces for NPS mode") Reviewed-by: Lijo Lazar Signed-off-by: Dan Carpenter Signed-off-by: Alex Deucher

drm/amdgpu: Fetch NPS mode for GCv9.4.3 VFs

2024-10-15T15:19:46Z

Use the memory ranges published in discovery table to deduce NPS mode of GC v9.4.3 VFs. Signed-off-by: Lijo Lazar Reviewed-by: Vignesh Chander Tested-by: Vignesh Chander Signed-off-by: Alex Deucher

drm/amdgpu: Check gmc requirement for reset on init

2024-10-15T15:16:32Z

Add a callback to check if there is any condition detected by GMC block for reset on init. One case is if a pending NPS change request is detected. If reset is done because of NPS switch, refresh NPS info from discovery table. Signed-off-by: Lijo Lazar Reviewed-by: Feifei Xu Signed-off-by: Alex Deucher

drm/amdgpu: Place NPS mode request on unload

2024-10-15T15:16:20Z

If a user has requested NPS mode switch, place the request through PSP during unload of the driver. For devices which are part of a hive, all requests are placed together. If one of them fails, revert back to the current NPS mode. Signed-off-by: Lijo Lazar Signed-off-by: Rajneesh Bhardwaj Reviewed-by: Feifei Xu Signed-off-by: Alex Deucher

drm/amdgpu: Add sysfs interfaces for NPS mode

2024-10-07T18:32:23Z

Add a sysfs interface to see available NPS modes to switch to - cat /sys/bus/pci/devices/../available_memory_paritition Make the current_memory_partition sysfs node read/write for requesting a new NPS mode. The request is only cached and at a later point a driver unload/reload is required to switch to the new NPS mode. Ex: echo NPS1 > /sys/bus/pci/devices/../current_memory_paritition echo NPS4 > /sys/bus/pci/devices/../current_memory_paritition The above interfaces will be available only if the SOC supports more than one NPS mode. Also modify the current memory partition sysfs logic to be more generic. Signed-off-by: Lijo Lazar Reviewed-by: Rajneesh Bhardwaj Signed-off-by: Alex Deucher

drm/amdgpu: Add gmc interface to request NPS mode

2024-10-07T18:32:23Z

Add a common interface in GMC to request NPS mode through PSP. Also add a variable in hive and gmc control to track the last requested mode. Signed-off-by: Rajneesh Bhardwaj Signed-off-by: Lijo Lazar Reviewed-by: Feifei Xu Signed-off-by: Alex Deucher

drm/amdgpu: Add option to refresh NPS data

2024-10-01T21:40:07Z

In certain use cases, NPS data needs to be refreshed again from discovery table. Add API parameter to refresh NPS data from discovery table. Signed-off-by: Lijo Lazar Reviewed-by: Rajneesh Bhardwaj Signed-off-by: Alex Deucher

drm/amdgpu: Remove unused amdgpu_gmc_vram_cpu_pa

2024-09-26T21:06:29Z

amdgpu_gmc_vram_cpu_pa has been unused since commit 087451f372bf ("drm/amdgpu: use generic fb helpers instead of setting up AMD own's.") Remove it. Signed-off-by: Dr. David Alan Gilbert Signed-off-by: Alex Deucher

drm/amdgpu: abort KIQ waits when there is a pending reset

2024-08-16T18:27:50Z

Stop waiting for the KIQ to return back when there is a reset pending. It's quite likely that the KIQ will never response. Signed-off-by: Koenig Christian Suggested-by: Lazar Lijo Tested-by: Victor Skvortsov Signed-off-by: Victor Skvortsov Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher

drm/amdgpu/mes: add multiple mes ring instances support

2024-08-13T14:29:25Z

Add multiple mes ring instances in mes structure to support multiple mes pipes. Signed-off-by: Jack Xiao Acked-by: Alex Deucher Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher