drm/amdkfd: prepare map process for single process debug devices

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Older HW only supports debugging on a single process because the
SPI debug mode setting registers are device global.

The HWS has supplied a single pinned VMID (0xf) for MAP_PROCESS
for debug purposes. To pin the VMID, the KFD will remove the VMID from
the HWS dynamic VMID allocation via SET_RESOUCES so that a debugged
process will never migrate away from its pinned VMID.

The KFD is responsible for reserving and releasing this pinned VMID
accordingly whenever the debugger attaches and detaches respectively.

Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Jonathan Kim 2022-04-04 12:27:43 -04:00 • committed by Alex Deucher

parent 7cee6a6824

commit 97ae3c8cce

4 changed files with 111 additions and 1 deletions

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93

drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c

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5

drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h

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9

drivers/gpu/drm/amd/amdkfd/kfd_packet_manager_v9.c

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5

drivers/gpu/drm/amd/amdkfd/kfd_pm4_headers_ai.h

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