drm/amdgpu: Reset the devices in the XGMI hive duirng probe

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In passthrough configuration, hypervisior will trigger the SBR(Secondary bus reset) to the devices
without sync to each other. This could cause device hang since for XGMI configuration, all the devices
within the hive need to be reset at a limit time slot. This serial of patches try to solve this issue
by co-operate with new SMU which will only do minimum house keeping to response the SBR request but don't
do the real reset job and leave it to driver. Driver need to do the whole sw init and minimum HW init
to bring up the SMU and trigger the reset(possibly BACO) on all the ASICs at the same time

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Acked-by: Andrey Grodzovsky andrey.grodzovsky@amd.com
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

shaoyunl 2021-02-16 12:50:42 -05:00 • committed by Alex Deucher

parent 655ce9cb13

commit e3c1b0712f

6 changed files with 164 additions and 31 deletions

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13

drivers/gpu/drm/amd/amdgpu/amdgpu.h

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102

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

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69

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

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1

drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h

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2

drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c

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8

drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c

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