diff options
| author | Alvin Lee <alvin.lee2@amd.com> | 2023-08-10 18:50:52 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-08-30 21:59:14 +0300 |
| commit | 0b9dc439f4046ef9e43f54989f6c3ff6cddc6d1b (patch) | |
| tree | 0097a2d4ffa00fc469b78031cb49856593ac84c3 /drivers/gpu/drm/amd/display/dc/inc/core_types.h | |
| parent | ec4247823bbc88a7ee81fec579d1b4408bba686d (diff) | |
| download | linux-0b9dc439f4046ef9e43f54989f6c3ff6cddc6d1b.tar.xz | |
drm/amd/display: Write flip addr to scratch reg for subvp
[Description]
SubVP needs to "calculate" the earliest in use META address
by using the current primary / meta addresses, but this leads
to a race condition where FW and driver can read/write the
address at the same time and intermittently produce inconsistent
address offsets. To mitigate this issue without locking (too slow),
save each surface flip addr into scratch registers and use this
to keep track of the earliest in use META addres.
Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@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/inc/core_types.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/core_types.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/inc/core_types.h b/drivers/gpu/drm/amd/display/dc/inc/core_types.h index 027aec70c070..7f9c75ffda18 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/core_types.h +++ b/drivers/gpu/drm/amd/display/dc/inc/core_types.h @@ -408,6 +408,8 @@ struct pipe_ctx { union pipe_update_flags update_flags; struct tg_color visual_confirm_color; bool has_vactive_margin; + /* subvp_index: only valid if the pipe is a SUBVP_MAIN*/ + uint8_t subvp_index; }; /* Data used for dynamic link encoder assignment. |