Debarshi Dutta 01dccf163d gpu: nvgpu: add logic for index conversion of GPCs/FBPs ...

For SMC mode, userspace is expected to use local indexing
for accessing GPC/FBP specific perf registers where local indexing
refers to indexes localized to a given SMC instance. H/W however expects
logical id based indexing for these registers. Currently, nvgpu driver maintains
a mapping between local <-> logical/physical ids of the GPCs for SMC specific
configurations/instances.

These register accesses are performed by the Debugger/Profiler interfaces and uses regops
for read/writes. In their current state, regops simply validates register addresses and performs
the required operation on them. These registers are currently indexed using local ids
and there is a need to convert them to use logical ids for supporting SMC modes. For non-SMC case
local ids are equivalent to logical ids and hence the conversion would have no effect on them.

Following changes are added to facilitate the above conversion from
local ids to logical ids in the regops path.

1) nvgpu_profiler_allowlist_range_search is modified to update
a nvgpu_pm_resource_register_range_map entry instead of just the
type.

2) added two APIs, one meant for profiler V2 based interfaces
and the other for legacy profiler interface. The logic for
legacy profiler interface extends into the more generic profiler
V2 logic to help retain future compatibility. These APIs are added
just after the validation stage for nvgpu_exec_regops.

3) The above APIs return an error if the local ids exceed the number
of GPCs/FBPs for a particular instance.

Bug 200712091

Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Change-Id: I060c2408a798f2f4e058aba266fa1ea9cebc2682
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2644956
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Antony Clince Alex <aalex@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit

2022-02-11 13:29:07 -08:00

..

pm_reservation.c

gpu: nvgpu: common: fix compile error of new compile flags

2022-01-13 12:36:14 -08:00

profiler.c

gpu: nvgpu: add logic for index conversion of GPCs/FBPs

2022-02-11 13:29:07 -08:00