drm/amd/display: Implement secure display on DCN21

[Why]
Porting secure display feature from DCN10 to DCN21. Support single
display for now and will extend to multiple displays.

[How]
- use workqueue to offload works for dmub or dmcu firmware
- after receiving ROI update from userspace, set skip_frame_cnt to 1
- refactor amdgpu_dm_crtc_handle_crc_window_irq()
- disable PSR before activating secure_display on a crtc
- check if secure_display is activated before enabling psr
- only work for single display for now.

Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Reviewed-by: Wayne Lin <Wayne.Lin@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alan Liu
2022-10-20 11:46:42 -04:00
committed by Alex Deucher
parent d1bc26cb5c
commit c0459bddd1
11 changed files with 221 additions and 187 deletions

View File

@@ -7840,6 +7840,9 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
*/
if (acrtc_state->stream->link->psr_settings.psr_version >= DC_PSR_VERSION_SU_1 &&
acrtc_attach->dm_irq_params.allow_psr_entry &&
#ifdef CONFIG_DRM_AMD_SECURE_DISPLAY
!amdgpu_dm_crc_window_is_activated(acrtc_state->base.crtc) &&
#endif
!acrtc_state->stream->link->psr_settings.psr_allow_active)
amdgpu_dm_psr_enable(acrtc_state->stream);
} else {
@@ -8301,8 +8304,8 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
#if defined(CONFIG_DRM_AMD_SECURE_DISPLAY)
if (amdgpu_dm_crc_window_is_activated(crtc)) {
spin_lock_irqsave(&adev_to_drm(adev)->event_lock, flags);
acrtc->dm_irq_params.crc_window.update_win = true;
acrtc->dm_irq_params.crc_window.skip_frame_cnt = 2;
acrtc->dm_irq_params.window_param.update_win = true;
acrtc->dm_irq_params.window_param.skip_frame_cnt = 2;
spin_lock_irq(&crc_rd_wrk->crc_rd_work_lock);
crc_rd_wrk->crtc = crtc;
spin_unlock_irq(&crc_rd_wrk->crc_rd_work_lock);