From b67a4376d53e1ae6eaef05389cfd0e6e5b7097db Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Sat, 1 Sep 2012 22:59:47 -0700 Subject: [PATCH] drm/i915: Extract forcewake ack timeout It's used all over the place, and we want to be able to play around with the value, apparently. Note that it doesn't touch other timeouts of the same value (like gtfifo, and thread C0 wait). Signed-off-by: Ben Widawsky Reviewed-by: Chris Wilson [danvet: fixup conflict with vlv forcewake patches.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_pm.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index ec7fbf9..fd8d37f 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -31,6 +31,8 @@ #include "../../../platform/x86/intel_ips.h" #include +#define FORCEWAKE_ACK_TIMEOUT_US 500 + /* FBC, or Frame Buffer Compression, is a technique employed to compress the * framebuffer contents in-memory, aiming at reducing the required bandwidth * during in-memory transfers and, therefore, reduce the power packet. @@ -3962,13 +3964,15 @@ static void __gen6_gt_force_wake_get(struct drm_i915_private *dev_priv) else forcewake_ack = FORCEWAKE_ACK; - if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1) == 0, 500)) + if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1) == 0, + FORCEWAKE_ACK_TIMEOUT_US)) DRM_ERROR("Timed out waiting for forcewake old ack to clear.\n"); I915_WRITE_NOTRACE(FORCEWAKE, 1); POSTING_READ(FORCEWAKE); - if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1), 500)) + if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1), + FORCEWAKE_ACK_TIMEOUT_US)) DRM_ERROR("Timed out waiting for forcewake to ack request.\n"); __gen6_gt_wait_for_thread_c0(dev_priv); @@ -3983,13 +3987,15 @@ static void __gen6_gt_force_wake_mt_get(struct drm_i915_private *dev_priv) else forcewake_ack = FORCEWAKE_MT_ACK; - if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1) == 0, 500)) + if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1) == 0, + FORCEWAKE_ACK_TIMEOUT_US)) DRM_ERROR("Timed out waiting for forcewake old ack to clear.\n"); I915_WRITE_NOTRACE(FORCEWAKE_MT, _MASKED_BIT_ENABLE(1)); POSTING_READ(FORCEWAKE_MT); - if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1), 500)) + if (wait_for_atomic_us((I915_READ_NOTRACE(forcewake_ack) & 1), + FORCEWAKE_ACK_TIMEOUT_US)) DRM_ERROR("Timed out waiting for forcewake to ack request.\n"); __gen6_gt_wait_for_thread_c0(dev_priv); @@ -4069,12 +4075,14 @@ int __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv) static void vlv_force_wake_get(struct drm_i915_private *dev_priv) { - if (wait_for_atomic_us((I915_READ_NOTRACE(FORCEWAKE_ACK_VLV) & 1) == 0, 500)) + if (wait_for_atomic_us((I915_READ_NOTRACE(FORCEWAKE_ACK_VLV) & 1) == 0, + FORCEWAKE_ACK_TIMEOUT_US)) DRM_ERROR("Timed out waiting for forcewake old ack to clear.\n"); I915_WRITE_NOTRACE(FORCEWAKE_VLV, _MASKED_BIT_ENABLE(1)); - if (wait_for_atomic_us((I915_READ_NOTRACE(FORCEWAKE_ACK_VLV) & 1), 500)) + if (wait_for_atomic_us((I915_READ_NOTRACE(FORCEWAKE_ACK_VLV) & 1), + FORCEWAKE_ACK_TIMEOUT_US)) DRM_ERROR("Timed out waiting for forcewake to ack request.\n"); __gen6_gt_wait_for_thread_c0(dev_priv); -- 2.7.4