On Thu, 2025-01-16 at 19:47 +0200, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrj...@linux.intel.com>
>
> Decode the display faults a bit more extensively so that one
> doesn't have translate the bitmask to planes/etc. manually.
> Also for plane faults we can read out a bit of state from the
> relevant plane(s) and dump that out.
>
> Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
> ---
> .../gpu/drm/i915/display/intel_atomic_plane.c | 2 +-
> .../gpu/drm/i915/display/intel_atomic_plane.h | 2 +
> .../gpu/drm/i915/display/intel_display_irq.c | 156 +++++++++++++++++-
> 3 files changed, 155 insertions(+), 5 deletions(-)
Reviewed-by: Vinod Govindapillai <vinod.govindapil...@intel.com>
>
> diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> index 612e9b0ec14a..0aeb5f00d9c4 100644
> --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> @@ -663,7 +663,7 @@ int intel_plane_atomic_check_with_state(const struct
> intel_crtc_state
> *old_crtc_
> old_plane_state,
> new_plane_state);
> }
>
> -static struct intel_plane *
> +struct intel_plane *
> intel_crtc_get_plane(struct intel_crtc *crtc, enum plane_id plane_id)
> {
> struct drm_i915_private *i915 = to_i915(crtc->base.dev);
> diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.h
> b/drivers/gpu/drm/i915/display/intel_atomic_plane.h
> index 0f982f452ff3..298bb97b37a4 100644
> --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.h
> +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.h
> @@ -19,6 +19,8 @@ struct intel_plane;
> struct intel_plane_state;
> enum plane_id;
>
> +struct intel_plane *
> +intel_crtc_get_plane(struct intel_crtc *crtc, enum plane_id plane_id);
> unsigned int intel_adjusted_rate(const struct drm_rect *src,
> const struct drm_rect *dst,
> unsigned int rate);
> diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c
> b/drivers/gpu/drm/i915/display/intel_display_irq.c
> index f06273d9bc8c..1b3b6b8bc794 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_irq.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_irq.c
> @@ -10,6 +10,7 @@
> #include "i915_irq.h"
> #include "i915_reg.h"
> #include "icl_dsi_regs.h"
> +#include "intel_atomic_plane.h"
> #include "intel_crtc.h"
> #include "intel_de.h"
> #include "intel_display_irq.h"
> @@ -26,6 +27,52 @@
> #include "intel_psr.h"
> #include "intel_psr_regs.h"
>
> +struct pipe_fault_handler {
> + bool (*handle)(struct intel_crtc *crtc, enum plane_id plane_id);
> + u32 fault;
> + enum plane_id plane_id;
> +};
> +
> +static bool handle_plane_fault(struct intel_crtc *crtc, enum plane_id
> plane_id)
> +{
> + struct intel_display *display = to_intel_display(crtc);
> + struct intel_plane_error error = {};
> + struct intel_plane *plane;
> +
> + plane = intel_crtc_get_plane(crtc, plane_id);
> + if (!plane || !plane->capture_error)
> + return false;
> +
> + plane->capture_error(crtc, plane, &error);
> +
> + drm_err_ratelimited(display->drm,
> + "[CRTC:%d:%s][PLANE:%d:%s] fault (CTL=0x%x,
> SURF=0x%x,
> SURFLIVE=0x%x)\n",
> + crtc->base.base.id, crtc->base.name,
> + plane->base.base.id, plane->base.name,
> + error.ctl, error.surf, error.surflive);
> +
> + return true;
> +}
> +
> +static void intel_pipe_fault_irq_handler(struct intel_display *display,
> + const struct pipe_fault_handler
> *handlers,
> + enum pipe pipe, u32 fault_errors)
> +{
> + struct intel_crtc *crtc = intel_crtc_for_pipe(display, pipe);
> + const struct pipe_fault_handler *handler;
> +
> + for (handler = handlers; handler && handler->fault; handler++) {
> + if ((fault_errors & handler->fault) == 0)
> + continue;
> +
> + if (handler->handle(crtc, handler->plane_id))
> + fault_errors &= ~handler->fault;
> + }
> +
> + WARN_ONCE(fault_errors, "[CRTC:%d:%s] unreported faults 0x%x\n",
> + crtc->base.base.id, crtc->base.name, fault_errors);
> +}
> +
> static void
> intel_handle_vblank(struct drm_i915_private *dev_priv, enum pipe pipe)
> {
> @@ -895,6 +942,108 @@ static u32 gen8_de_pipe_fault_mask(struct
> drm_i915_private *dev_priv)
> GEN8_PIPE_PRIMARY_FAULT;
> }
>
> +static bool handle_plane_ats_fault(struct intel_crtc *crtc, enum plane_id
> plane_id)
> +{
> + struct intel_display *display = to_intel_display(crtc);
> +
> + drm_err_ratelimited(display->drm,
> + "[CRTC:%d:%s] PLANE ATS fault\n",
> + crtc->base.base.id, crtc->base.name);
> +
> + return false;
> +}
> +
> +static bool handle_pipedmc_ats_fault(struct intel_crtc *crtc, enum plane_id
> plane_id)
> +{
> + struct intel_display *display = to_intel_display(crtc);
> +
> + drm_err_ratelimited(display->drm,
> + "[CRTC:%d:%s] PIPEDMC ATS fault\n",
> + crtc->base.base.id, crtc->base.name);
> +
> + return false;
> +}
> +
> +static bool handle_pipedmc_fault(struct intel_crtc *crtc, enum plane_id
> plane_id)
> +{
> + struct intel_display *display = to_intel_display(crtc);
> +
> + drm_err_ratelimited(display->drm,
> + "[CRTC:%d:%s] PIPEDMC fault\n",
> + crtc->base.base.id, crtc->base.name);
> +
> + return false;
> +}
> +
> +static const struct pipe_fault_handler mtl_pipe_fault_handlers[] = {
> + { .fault = MTL_PLANE_ATS_FAULT, .handle = handle_plane_ats_fault, },
> + { .fault = MTL_PIPEDMC_ATS_FAULT, .handle = handle_pipedmc_ats_fault,
> },
> + { .fault = GEN12_PIPEDMC_FAULT, .handle = handle_pipedmc_fault, },
> + { .fault = GEN11_PIPE_PLANE5_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_5, },
> + { .fault = GEN9_PIPE_PLANE4_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_4, },
> + { .fault = GEN9_PIPE_PLANE3_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_3, },
> + { .fault = GEN9_PIPE_PLANE2_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_2, },
> + { .fault = GEN9_PIPE_PLANE1_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_1, },
> + { .fault = GEN9_PIPE_CURSOR_FAULT, .handle = handle_plane_fault,
> .plane_id =
> PLANE_CURSOR, },
> + {}
> +};
> +
> +static const struct pipe_fault_handler tgl_pipe_fault_handlers[] = {
> + { .fault = GEN12_PIPEDMC_FAULT, .handle = handle_pipedmc_fault, },
> + { .fault = GEN11_PIPE_PLANE7_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_7, },
> + { .fault = GEN11_PIPE_PLANE6_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_6, },
> + { .fault = GEN11_PIPE_PLANE5_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_5, },
> + { .fault = GEN9_PIPE_PLANE4_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_4, },
> + { .fault = GEN9_PIPE_PLANE3_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_3, },
> + { .fault = GEN9_PIPE_PLANE2_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_2, },
> + { .fault = GEN9_PIPE_PLANE1_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_1, },
> + { .fault = GEN9_PIPE_CURSOR_FAULT, .handle = handle_plane_fault,
> .plane_id =
> PLANE_CURSOR, },
> + {}
> +};
> +
> +static const struct pipe_fault_handler icl_pipe_fault_handlers[] = {
> + { .fault = GEN11_PIPE_PLANE7_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_7, },
> + { .fault = GEN11_PIPE_PLANE6_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_6, },
> + { .fault = GEN11_PIPE_PLANE5_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_5, },
> + { .fault = GEN9_PIPE_PLANE4_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_4, },
> + { .fault = GEN9_PIPE_PLANE3_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_3, },
> + { .fault = GEN9_PIPE_PLANE2_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_2, },
> + { .fault = GEN9_PIPE_PLANE1_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_1, },
> + { .fault = GEN9_PIPE_CURSOR_FAULT, .handle = handle_plane_fault,
> .plane_id =
> PLANE_CURSOR, },
> + {}
> +};
> +
> +static const struct pipe_fault_handler skl_pipe_fault_handlers[] = {
> + { .fault = GEN9_PIPE_PLANE4_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_4, },
> + { .fault = GEN9_PIPE_PLANE3_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_3, },
> + { .fault = GEN9_PIPE_PLANE2_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_2, },
> + { .fault = GEN9_PIPE_PLANE1_FAULT, .handle = handle_plane_fault,
> .plane_id = PLANE_1, },
> + { .fault = GEN9_PIPE_CURSOR_FAULT, .handle = handle_plane_fault,
> .plane_id =
> PLANE_CURSOR, },
> + {}
> +};
> +
> +static const struct pipe_fault_handler bdw_pipe_fault_handlers[] = {
> + { .fault = GEN8_PIPE_SPRITE_FAULT, .handle = handle_plane_fault,
> .plane_id =
> PLANE_SPRITE0, },
> + { .fault = GEN8_PIPE_PRIMARY_FAULT, .handle = handle_plane_fault,
> .plane_id =
> PLANE_PRIMARY, },
> + { .fault = GEN8_PIPE_CURSOR_FAULT, .handle = handle_plane_fault,
> .plane_id =
> PLANE_CURSOR, },
> + {}
> +};
> +
> +static const struct pipe_fault_handler *
> +gen8_pipe_fault_handlers(struct intel_display *display)
> +{
> + if (DISPLAY_VER(display) >= 14)
> + return mtl_pipe_fault_handlers;
> + else if (DISPLAY_VER(display) >= 12)
> + return tgl_pipe_fault_handlers;
> + else if (DISPLAY_VER(display) >= 11)
> + return icl_pipe_fault_handlers;
> + else if (DISPLAY_VER(display) >= 9)
> + return skl_pipe_fault_handlers;
> + else
> + return bdw_pipe_fault_handlers;
> +}
> +
> static void intel_pmdemand_irq_handler(struct drm_i915_private *dev_priv)
> {
> wake_up_all(&dev_priv->display.pmdemand.waitqueue);
> @@ -1182,10 +1331,9 @@ void gen8_de_irq_handler(struct drm_i915_private
> *dev_priv, u32 master_ctl)
>
> fault_errors = iir & gen8_de_pipe_fault_mask(dev_priv);
> if (fault_errors)
> - drm_err_ratelimited(&dev_priv->drm,
> - "Fault errors on pipe %c: 0x%08x\n",
> - pipe_name(pipe),
> - fault_errors);
> + intel_pipe_fault_irq_handler(display,
> +
> gen8_pipe_fault_handlers(display),
> + pipe, fault_errors);
> }
>
> if (HAS_PCH_SPLIT(dev_priv) && !HAS_PCH_NOP(dev_priv) &&
