From: Sung Lee <sung.lee@xxxxxxx>
[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@xxxxxxx>
Acked-by: Bindu Ramamurthy <bindu.r@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c | 2 ++
drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c | 2 +-
drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h | 1 +
3 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c
index 129f0b62f751..42fbb5e6d505 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c
@@ -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;
}
}
diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
index ed3f62535301..1c88d2edd381 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
@@ -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;
}
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
index 5425e92efcb8..d9fd28b34f2a 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
@@ -157,6 +157,7 @@ struct hubbub_funcs {
struct hubbub {
const struct hubbub_funcs *funcs;
struct dc_context *ctx;
+ bool riommu_active;
};
#endif
--
2.25.1
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