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| author | Aurabindo Pillai <aurabindo.pillai@amd.com> | 2023-08-23 18:15:51 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-09-11 17:16:35 -0400 |
| commit | 42ab1cfed03a3248cd98ca1708f6d7520c606b27 (patch) | |
| tree | f50101b7c93dd93585cc7a1f713cbebcbf62d793 /drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c | |
| parent | 77ad5f6febdc17f4d06bf0b163b8612823e58d74 (diff) | |
| download | linux-stable-42ab1cfed03a3248cd98ca1708f6d7520c606b27.tar.gz linux-stable-42ab1cfed03a3248cd98ca1708f6d7520c606b27.tar.bz2 linux-stable-42ab1cfed03a3248cd98ca1708f6d7520c606b27.zip | |
drm/amd/display: Add DCHUBBUB callback to report MALL status
[Why&How]
For enabling automated testing, add a hook to DCHUBBUB interface so that
mall status can be queried by userspace through debugfs. This removes
dependence on requiring a userspace tool like UMR for querying status
for MALL static screen IGT test.
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c index 8bfef6d095b2..88dfc907553d 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c +++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c @@ -945,6 +945,17 @@ void hubbub32_force_wm_propagate_to_pipes(struct hubbub *hubbub) DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A, prog_wm_value); } +void hubbub32_get_mall_en(struct hubbub *hubbub, unsigned int *mall_in_use) +{ + struct dcn20_hubbub *hubbub2 = TO_DCN20_HUBBUB(hubbub); + uint32_t prefetch_complete, mall_en; + + REG_GET_2(DCHUBBUB_ARB_MALL_CNTL, MALL_IN_USE, &mall_en, + MALL_PREFETCH_COMPLETE, &prefetch_complete); + + *mall_in_use = prefetch_complete && mall_en; +} + void hubbub32_init(struct hubbub *hubbub) { struct dcn20_hubbub *hubbub2 = TO_DCN20_HUBBUB(hubbub); @@ -995,7 +1006,8 @@ static const struct hubbub_funcs hubbub32_funcs = { .init_crb = dcn32_init_crb, .hubbub_read_state = hubbub2_read_state, .force_usr_retraining_allow = hubbub32_force_usr_retraining_allow, - .set_request_limit = hubbub32_set_request_limit + .set_request_limit = hubbub32_set_request_limit, + .get_mall_en = hubbub32_get_mall_en, }; void hubbub32_construct(struct dcn20_hubbub *hubbub2, |