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Author	SHA1	Message	Date
Jonathan Kim	44357a1bd5	drm/amdgpu: get extended xgmi topology data The TA has a limit to the amount of data that can be retrieved from GET_TOPOLOGY. For setups that exceed this limit, the xGMI topology needs to be re-initialized and data needs to be re-fetched from the extended link records by setting a flag in the shared command buffer. The number of hops and the number of links must be accumulated by the driver. Other data points are all fetched from the first request. Because the TA has already exceeded its link record limit, it cannot hold bidirectional information. Otherwise the driver would have to do more than two fetches so the driver has to reflect the topology information in the opposite direction. v2: squashed with internal reviewed fix Signed-off-by: Jonathan Kim <jonathan.kim@amd.com> Reviewed-by: Hawking Zhang <hawking.zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>	2021-08-18 18:22:24 -04:00
Jonathan Kim	331e78187f	drm/amdgpu: add psp command to get num xgmi links between direct peers The TA can now be invoked to provide the number of xgmi links connecting a direct source and destination peer. Non-direct peers will report zero links. 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>	2021-07-23 10:07:59 -04:00
Hawking Zhang	4de5f0055a	drm/amdgpu/psp: add xgmi ta header Add the psp xgmi driver interface. Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>	2018-11-06 14:02:41 -05:00

Author

SHA1

Message

Date

Jonathan Kim

44357a1bd5

drm/amdgpu: get extended xgmi topology data

The TA has a limit to the amount of data that can be retrieved from
GET_TOPOLOGY.  For setups that exceed this limit, the xGMI topology
needs to be re-initialized and data needs to be re-fetched from the
extended link records by setting a flag in the shared command buffer.

The number of hops and the number of links must be accumulated by the
driver. Other data points are all fetched from the first request.
Because the TA has already exceeded its link record limit, it
cannot hold bidirectional information.  Otherwise the driver would
have to do more than two fetches so the driver has to reflect the
topology information in the opposite direction.

v2: squashed with internal reviewed fix

Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Hawking Zhang <hawking.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2021-08-18 18:22:24 -04:00

Jonathan Kim

331e78187f

drm/amdgpu: add psp command to get num xgmi links between direct peers

The TA can now be invoked to provide the number of xgmi links connecting
a direct source and destination peer.
Non-direct peers will report zero links.

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>

2021-07-23 10:07:59 -04:00

Hawking Zhang

4de5f0055a

drm/amdgpu/psp: add xgmi ta header

Add the psp xgmi driver interface.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2018-11-06 14:02:41 -05:00

3 Commits