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path: root/drivers/gpu/drm/i915/i915_reg.h
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
-rw-r--r--drivers/gpu/drm/i915/i915_reg.h12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 0f6f567ae50..56d4db8026e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -643,7 +643,9 @@
#define CACHE_MODE_1 0x7004 /* IVB+ */
#define PIXEL_SUBSPAN_COLLECT_OPT_DISABLE (1<<6)
-/* GEN6 interrupt control */
+/* GEN6 interrupt control
+ * Note that the per-ring interrupt bits do alias with the global interrupt bits
+ * in GTIMR. */
#define GEN6_RENDER_HWSTAM 0x2098
#define GEN6_RENDER_IMR 0x20a8
#define GEN6_RENDER_CONTEXT_SWITCH_INTERRUPT (1 << 8)
@@ -3203,13 +3205,15 @@
#define DEIIR 0x44008
#define DEIER 0x4400c
-/* GT interrupt */
+/* GT interrupt.
+ * Note that for gen6+ the ring-specific interrupt bits do alias with the
+ * corresponding bits in the per-ring interrupt control registers. */
#define GT_GEN6_BLT_FLUSHDW_NOTIFY_INTERRUPT (1 << 26)
#define GT_GEN6_BLT_CS_ERROR_INTERRUPT (1 << 25)
-#define GT_BLT_USER_INTERRUPT (1 << 22)
+#define GT_GEN6_BLT_USER_INTERRUPT (1 << 22)
#define GT_GEN6_BSD_CS_ERROR_INTERRUPT (1 << 15)
#define GT_GEN6_BSD_USER_INTERRUPT (1 << 12)
-#define GT_BSD_USER_INTERRUPT (1 << 5)
+#define GT_BSD_USER_INTERRUPT (1 << 5) /* ilk only */
#define GT_GEN7_L3_PARITY_ERROR_INTERRUPT (1 << 5)
#define GT_PIPE_NOTIFY (1 << 4)
#define GT_RENDER_CS_ERROR_INTERRUPT (1 << 3)