From: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx> [Why] On dcn21 this is programmed for tracebuffer support but isn't being programmed on dcn20. DMCUB execution hits an undefined address 65000000 on tracebuffer access. [How] Program CW5. Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx> Reviewed-by: Tony Cheng <Tony.Cheng@xxxxxxx> Acked-by: Leo Li <sunpeng.li@xxxxxxx> --- drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c index 6b7d54572aa3..302dd3d4b77d 100644 --- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c @@ -99,6 +99,13 @@ void dmub_dcn20_setup_windows(struct dmub_srv *dmub, REG_SET_2(DMCUB_REGION4_TOP_ADDRESS, 0, DMCUB_REGION4_TOP_ADDRESS, cw4->region.top - cw4->region.base - 1, DMCUB_REGION4_ENABLE, 1); + + REG_WRITE(DMCUB_REGION3_CW5_OFFSET, cw5->offset.u.low_part); + REG_WRITE(DMCUB_REGION3_CW5_OFFSET_HIGH, cw5->offset.u.high_part); + REG_WRITE(DMCUB_REGION3_CW5_BASE_ADDRESS, cw5->region.base); + REG_SET_2(DMCUB_REGION3_CW5_TOP_ADDRESS, 0, + DMCUB_REGION3_CW5_TOP_ADDRESS, cw5->region.top, + DMCUB_REGION3_CW5_ENABLE, 1); } void dmub_dcn20_setup_mailbox(struct dmub_srv *dmub, -- 2.24.0 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
