| Message ID | 20221122231235.3299737-10-dmitry.baryshkov@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | drm/msm: add support for SM8450 | expand |
Hi, On 23/11/2022 00:12, Dmitry Baryshkov wrote: > On sm8450 a register block was removed from MDP TOP. Accessing it during > snapshotting results in NoC errors / immediate reboot. Skip accessing > these registers during snapshot. > > Tested-by: Vinod Koul <vkoul@kernel.org> > Reviewed-by: Vinod Koul <vkoul@kernel.org> > Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 1 + > drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 11 +++++++++-- > 2 files changed, 10 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h > index 38aa38ab1568..4730f8268f2a 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h > @@ -92,6 +92,7 @@ enum { > DPU_MDP_UBWC_1_0, > DPU_MDP_UBWC_1_5, > DPU_MDP_AUDIO_SELECT, > + DPU_MDP_PERIPH_0_REMOVED, > DPU_MDP_MAX > }; > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > index f3660cd14f4f..67f2e5288b3c 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > @@ -927,8 +927,15 @@ static void dpu_kms_mdp_snapshot(struct msm_disp_state *disp_state, struct msm_k > msm_disp_snapshot_add_block(disp_state, cat->wb[i].len, > dpu_kms->mmio + cat->wb[i].base, "wb_%d", i); > > - msm_disp_snapshot_add_block(disp_state, cat->mdp[0].len, > - dpu_kms->mmio + cat->mdp[0].base, "top"); > + if (top->caps->features & BIT(DPU_MDP_PERIPH_0_REMOVED)) { This fails to build on linux-next, either I missed something while applying or it should be: - if (top->caps->features & BIT(DPU_MDP_PERIPH_0_REMOVED)) { + if (dpu_kms->hw_mdp->caps->features & BIT(DPU_MDP_PERIPH_0_REMOVED)) { > + msm_disp_snapshot_add_block(disp_state, 0x380, > + dpu_kms->mmio + cat->mdp[0].base, "top"); > + msm_disp_snapshot_add_block(disp_state, cat->mdp[0].len - 0x3a8, > + dpu_kms->mmio + cat->mdp[0].base + 0x3a8, "top_2"); > + } else { > + msm_disp_snapshot_add_block(disp_state, cat->mdp[0].len, > + dpu_kms->mmio + cat->mdp[0].base, "top"); > + } > > pm_runtime_put_sync(&dpu_kms->pdev->dev); > } Neil
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h index 38aa38ab1568..4730f8268f2a 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h @@ -92,6 +92,7 @@ enum { DPU_MDP_UBWC_1_0, DPU_MDP_UBWC_1_5, DPU_MDP_AUDIO_SELECT, + DPU_MDP_PERIPH_0_REMOVED, DPU_MDP_MAX }; diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index f3660cd14f4f..67f2e5288b3c 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -927,8 +927,15 @@ static void dpu_kms_mdp_snapshot(struct msm_disp_state *disp_state, struct msm_k msm_disp_snapshot_add_block(disp_state, cat->wb[i].len, dpu_kms->mmio + cat->wb[i].base, "wb_%d", i); - msm_disp_snapshot_add_block(disp_state, cat->mdp[0].len, - dpu_kms->mmio + cat->mdp[0].base, "top"); + if (top->caps->features & BIT(DPU_MDP_PERIPH_0_REMOVED)) { + msm_disp_snapshot_add_block(disp_state, 0x380, + dpu_kms->mmio + cat->mdp[0].base, "top"); + msm_disp_snapshot_add_block(disp_state, cat->mdp[0].len - 0x3a8, + dpu_kms->mmio + cat->mdp[0].base + 0x3a8, "top_2"); + } else { + msm_disp_snapshot_add_block(disp_state, cat->mdp[0].len, + dpu_kms->mmio + cat->mdp[0].base, "top"); + } pm_runtime_put_sync(&dpu_kms->pdev->dev); }