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drm/amd/display: Populate hostvm parameter before DML calculation

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[Why]
If the system does not have hostvm enabled, disabling it for
DML validation will allow more modes to pass at lower voltage
levels.

[How]
When initializing HostVM save state to hubbub and read back
when populating DML pipes from context.

Signed-off-by: Sung Lee <sung.lee@amd.com>
Acked-by: Bindu Ramamurthy <bindu.r@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sung Lee 2020-10-30 19:31:51 -04:00 committed by Alex Deucher
parent b8e0b3d611
commit 82df77ae46
3 changed files with 4 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c
View file

@ -99,6 +99,8 @@ void dcn21_dchvm_init(struct hubbub *hubbub)
//Poll until HOSTVM_PREFETCH_DONE = 1
REG_WAIT(DCHVM_RIOMMU_STAT0, HOSTVM_PREFETCH_DONE, 1, 5, 100);
hubbub->riommu_active = true;
}
}

2
drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
View file

@ -1886,7 +1886,7 @@ static int dcn21_populate_dml_pipes_from_context(
for (i = 0; i < pipe_cnt; i++) {
pipes[i].pipe.src.hostvm = 1;
pipes[i].pipe.src.hostvm = dc->res_pool->hubbub->riommu_active;
pipes[i].pipe.src.gpuvm = 1;
}

1
drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
View file

@ -157,6 +157,7 @@ struct hubbub_funcs {
struct hubbub {
const struct hubbub_funcs *funcs;
struct dc_context *ctx;
bool riommu_active;
};
#endif