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Commit ec6a890d authored by Chris Wilson's avatar Chris Wilson Committed by Keith Packard
Browse files

drm/i915: Apply HWSTAM workaround for BSD ring on SandyBridge 



...we need to apply exactly the same workaround for missing interrupts
from BSD as for the BLT ring, apparently.

See also commit 498e720b
(drm/i915: Fix gen6 (SNB) missed BLT ring interrupts).

Reported-and-tested-by: default avatar <nkalkhof@web.de>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38529


Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarKeith Packard <keithp@keithp.com>
parent efc2924e

drivers/gpu/drm/i915/i915_irq.c

+1 −0
Original line number Diff line number Diff line
@@ -1749,6 +1749,7 @@ void ironlake_irq_preinstall(struct drm_device *dev) 
		 * happens.

		 */

		I915_WRITE(GEN6_BLITTER_HWSTAM, ~GEN6_BLITTER_USER_INTERRUPT);

		I915_WRITE(GEN6_BSD_HWSTAM, ~GEN6_BSD_USER_INTERRUPT);

	}



	/* XXX hotplug from PCH */

drivers/gpu/drm/i915/i915_reg.h

+1 −0
Original line number Diff line number Diff line
@@ -531,6 +531,7 @@ 
#define   GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_ENABLE		0

#define   GEN6_BSD_SLEEP_PSMI_CONTROL_IDLE_INDICATOR			(1 << 3)



#define GEN6_BSD_HWSTAM			0x12098

#define GEN6_BSD_IMR			0x120a8

#define   GEN6_BSD_USER_INTERRUPT	(1 << 12)