From 4d73da937fcf5f1bc0e58f6f34b2c32355e64f74 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 21 Jul 2017 13:32:19 +0100
Subject: [PATCH] drm/i915: Report execlists irq bit in debugfs
Git-commit: 4d73da937fcf5f1bc0e58f6f34b2c32355e64f74
Patch-mainline: v4.14-rc1
References: FATE#322643 bsc#1055900

As part of the knowing whether there is outstanding data in the CSB,
also check whether there is an outstanding IRQ notification.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170721123238.16428-1-chris@chris-wilson.co.uk
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/i915/i915_debugfs.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -3325,8 +3325,10 @@ static int i915_engine_info(struct seq_f
 			ptr = I915_READ(RING_CONTEXT_STATUS_PTR(engine));
 			read = GEN8_CSB_READ_PTR(ptr);
 			write = GEN8_CSB_WRITE_PTR(ptr);
-			seq_printf(m, "\tExeclist CSB read %d, write %d\n",
-				   read, write);
+			seq_printf(m, "\tExeclist CSB read %d, write %d, interrupt posted? %s\n",
+				   read, write,
+				   yesno(test_bit(ENGINE_IRQ_EXECLIST,
+						  &engine->irq_posted)));
 			if (read >= GEN8_CSB_ENTRIES)
 				read = 0;
 			if (write >= GEN8_CSB_ENTRIES)