drm/i915/gt: Hook up CS_MASTER_ERROR_INTERRUPT
Now that we have offline error capture and can reset an engine from
inside an atomic context while also preserving the GPU state for
post-mortem analysis, it is time to handle error interrupts thrown by
the command parser.
This provides a much, much faster mechanism for us to detect known
problems than using heartbeats/hangchecks, and also provides a mechanism
for when those are disabled. However, it is limited to problems the HW
can detect in the CS and so not a complete solution for detecting lockups.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200128204318.4182039-2-chris@chris-wilson.co.uk
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index b93c4c1..4c72b8a 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2639,6 +2639,9 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define GEN11_MCR_SUBSLICE_MASK GEN11_MCR_SUBSLICE(0x7)
#define RING_IPEIR(base) _MMIO((base) + 0x64)
#define RING_IPEHR(base) _MMIO((base) + 0x68)
+#define RING_EIR(base) _MMIO((base) + 0xb0)
+#define RING_EMR(base) _MMIO((base) + 0xb4)
+#define RING_ESR(base) _MMIO((base) + 0xb8)
/*
* On GEN4, only the render ring INSTDONE exists and has a different
* layout than the GEN7+ version.
@@ -3088,7 +3091,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define GT_CONTEXT_SWITCH_INTERRUPT (1 << 8)
#define GT_RENDER_L3_PARITY_ERROR_INTERRUPT (1 << 5) /* !snb */
#define GT_RENDER_PIPECTL_NOTIFY_INTERRUPT (1 << 4)
-#define GT_RENDER_CS_MASTER_ERROR_INTERRUPT (1 << 3)
+#define GT_CS_MASTER_ERROR_INTERRUPT REG_BIT(3)
#define GT_RENDER_SYNC_STATUS_INTERRUPT (1 << 2)
#define GT_RENDER_DEBUG_INTERRUPT (1 << 1)
#define GT_RENDER_USER_INTERRUPT (1 << 0)
