From mboxrd@z Thu Jan 1 00:00:00 1970 From: John.C.Harrison@Intel.com Subject: [RFC 07/44] drm/i915: Disable 'get seqno' workaround for VLV Date: Thu, 26 Jun 2014 18:23:58 +0100 Message-ID: <1403803475-16337-8-git-send-email-John.C.Harrison@Intel.com> References: <1403803475-16337-1-git-send-email-John.C.Harrison@Intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id F16D56E1F9 for ; Thu, 26 Jun 2014 10:25:25 -0700 (PDT) In-Reply-To: <1403803475-16337-1-git-send-email-John.C.Harrison@Intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Intel-GFX@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org From: John Harrison There is a workaround for a hardware bug when reading the seqno from the status page. The bug does not exist on VLV however, the workaround was still being applied. --- drivers/gpu/drm/i915/intel_ringbuffer.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 279488a..bad5db0 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1960,7 +1960,10 @@ int intel_init_render_ring_buffer(struct drm_device *dev) ring->irq_put = gen6_ring_put_irq; } ring->irq_enable_mask = GT_RENDER_USER_INTERRUPT; - ring->get_seqno = gen6_ring_get_seqno; + if (IS_VALLEYVIEW(dev)) + ring->get_seqno = ring_get_seqno; + else + ring->get_seqno = gen6_ring_get_seqno; ring->set_seqno = ring_set_seqno; ring->semaphore.sync_to = gen6_ring_sync; ring->semaphore.signal = gen6_signal; -- 1.7.9.5