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/dc_dmub_srv.c | |
| 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/dc_dmub_srv.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c index 4c5ef3ef8dbd..f32b5c71a66b 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c @@ -1054,4 +1054,9 @@ void dc_dmub_srv_enable_dpia_trace(const struct dc *dc) } DC_LOG_DEBUG("Enabled DPIA trace\n"); +} + +void dc_dmub_srv_subvp_save_surf_addr(const struct dc_dmub_srv *dc_dmub_srv, const struct dc_plane_address *addr, uint8_t subvp_index) +{ + dmub_srv_subvp_save_surf_addr(dc_dmub_srv->dmub, addr, subvp_index); }
\ No newline at end of file |