Attachment 48241 Details for Bug 38529 – Apply HWSTAM workaround for BSD ring as well

[patch] Apply HWSTAM workaround for BSD ring as well

0001-drm-i915-Apply-HWSTAM-workaround-for-BSD-ring-on-San.patch (text/plain), 1.61 KB, created by Chris Wilson on 2011-06-21 09:06:26 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Chris Wilson

Created: 2011-06-21 09:06:26 UTC

Size: 1.61 KB

patch

obsolete

>From 362e4c45ffc8e26f648b228a647cc8e165b2a2f1 Mon Sep 17 00:00:00 2001
>From: Chris Wilson <chris@chris-wilson.co.uk>
>Date: Tue, 21 Jun 2011 17:03:55 +0100
>Subject: [PATCH] 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 498e720b96379d8ee9c294950a01534a73defcf3
>(drm/i915: Fix gen6 (SNB) missed BLT ring interrupts).
>
>Reported-by: nkalkhof@web.de
>Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38529
>Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
>---
> drivers/gpu/drm/i915/i915_irq.c |    1 +
> drivers/gpu/drm/i915/i915_reg.h |    1 +
> 2 files changed, 2 insertions(+), 0 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
>index 9e34a1a..ae2b499 100644
>--- a/drivers/gpu/drm/i915/i915_irq.c
>+++ b/drivers/gpu/drm/i915/i915_irq.c
>@@ -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 */
>diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
>index 2f967af..5d5def7 100644
>--- a/drivers/gpu/drm/i915/i915_reg.h
>+++ b/drivers/gpu/drm/i915/i915_reg.h
>@@ -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)
> 
>-- 
>1.7.5.4
>

Actions: View | Splinter Review

Attachments on bug 38529: 48238 | 48239 | 48240 | 48241

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.