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drm/i915: support Haswell force waking 

There is a different ACK register for force wake on Haswell, so account
for that.

Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Eugeni Dodonov 2012-07-02 11:51:04 -03:00 committed by Daniel Vetter
parent c4de7b0ffd
commit e7911c48a0
2 changed files with 19 additions and 4 deletions
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22
drivers/gpu/drm/i915/i915_drv.c
View File

@ -451,12 +451,19 @@ static void __gen6_gt_wait_for_thread_c0(struct drm_i915_private *dev_priv)
static void __gen6_gt_force_wake_get(struct drm_i915_private *dev_priv)
{
if (wait_for_atomic_us((I915_READ_NOTRACE(FORCEWAKE_ACK) & 1) == 0, 500))
u32 forcewake_ack;
if (IS_HASWELL(dev_priv->dev))
forcewake_ack = FORCEWAKE_ACK_HSW;
else
forcewake_ack = FORCEWAKE_ACK;
if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1) == 0, 500))
DRM_ERROR("Force wake wait timed out\n");
I915_WRITE_NOTRACE(FORCEWAKE, 1);
if (wait_for_atomic_us((I915_READ_NOTRACE(FORCEWAKE_ACK) & 1), 500))
if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1), 500))
DRM_ERROR("Force wake wait timed out\n");
__gen6_gt_wait_for_thread_c0(dev_priv);
@ -464,12 +471,19 @@ static void __gen6_gt_force_wake_get(struct drm_i915_private *dev_priv)
static void __gen6_gt_force_wake_mt_get(struct drm_i915_private *dev_priv)
{
if (wait_for_atomic_us((I915_READ_NOTRACE(FORCEWAKE_MT_ACK) & 1) == 0, 500))
u32 forcewake_ack;
if (IS_HASWELL(dev_priv->dev))
forcewake_ack = FORCEWAKE_ACK_HSW;
else
forcewake_ack = FORCEWAKE_MT_ACK;
if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1) == 0, 500))
DRM_ERROR("Force wake wait timed out\n");
I915_WRITE_NOTRACE(FORCEWAKE_MT, _MASKED_BIT_ENABLE(1));
if (wait_for_atomic_us((I915_READ_NOTRACE(FORCEWAKE_MT_ACK) & 1), 500))
if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1), 500))
DRM_ERROR("Force wake wait timed out\n");
__gen6_gt_wait_for_thread_c0(dev_priv);

1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -4071,6 +4071,7 @@
#define FORCEWAKE 0xA18C
#define FORCEWAKE_VLV 0x1300b0
#define FORCEWAKE_ACK_VLV 0x1300b4
#define FORCEWAKE_ACK_HSW 0x130044
#define FORCEWAKE_ACK 0x130090
#define FORCEWAKE_MT 0xa188 /* multi-threaded */
#define FORCEWAKE_MT_ACK 0x130040