From patchwork Tue Nov 6 16:25:38 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Widawsky X-Patchwork-Id: 1705361 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork1.kernel.org (Postfix) with ESMTP id 49AE63FCDE for ; Tue, 6 Nov 2012 16:33:20 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 366049EEDC for ; Tue, 6 Nov 2012 08:33:20 -0800 (PST) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from shiva.chad-versace.us (209-20-75-48.static.cloud-ips.com [209.20.75.48]) by gabe.freedesktop.org (Postfix) with ESMTP id CE7299EFEF for ; Tue, 6 Nov 2012 08:26:58 -0800 (PST) Received: by shiva.chad-versace.us (Postfix, from userid 1005) id D5E71885AD; Tue, 6 Nov 2012 16:28:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on shiva.chad-versace.us X-Spam-Level: X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=unavailable version=3.3.2 Received: from localhost.localdomain (unknown [83.217.123.106]) by shiva.chad-versace.us (Postfix) with ESMTPSA id DA0FB88688; Tue, 6 Nov 2012 16:27:06 +0000 (UTC) From: Ben Widawsky To: intel-gfx@lists.freedesktop.org Date: Tue, 6 Nov 2012 16:25:38 +0000 Message-Id: <1352219142-1395-15-git-send-email-ben@bwidawsk.net> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1352219142-1395-1-git-send-email-ben@bwidawsk.net> References: <1352219142-1395-1-git-send-email-ben@bwidawsk.net> Cc: Ben Widawsky Subject: [Intel-gfx] [PATCH 14/18] drm/i915: vebox interrupt get/put X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org v2: Use the correct lock to protect PM interrupt regs, this was accidentally lost from earlier (Haihao) Fix return types (Ben) CC: Xiang, Haihao Signed-off-by: Ben Widawsky --- drivers/gpu/drm/i915/intel_ringbuffer.c | 46 +++++++++++++++++++++++++++++++-- drivers/gpu/drm/i915/intel_ringbuffer.h | 5 ++-- 2 files changed, 47 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 33b176a..5f03abc 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -970,6 +970,48 @@ gen6_ring_put_irq(struct intel_ring_buffer *ring) gen6_gt_force_wake_put(dev_priv); } +static bool +hsw_vebox_get_irq(struct intel_ring_buffer *ring) +{ + struct drm_device *dev = ring->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + unsigned long flags; + + if (!dev->irq_enabled) + return false; + + spin_lock_irqsave(&dev_priv->rps.lock, flags); + if (ring->irq_refcount.pm++ == 0) { + u32 pm_imr = I915_READ(GEN6_PMIMR); + I915_WRITE_IMR(ring, ~ring->irq_enable_mask); + I915_WRITE(GEN6_PMIMR, pm_imr & ~ring->irq_enable_mask); + POSTING_READ(GEN6_PMIMR); + } + spin_unlock_irqrestore(&dev_priv->rps.lock, flags); + + return true; +} + +static void +hsw_vebox_put_irq(struct intel_ring_buffer *ring) +{ + struct drm_device *dev = ring->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + unsigned long flags; + + if (!dev->irq_enabled) + return; + + spin_lock_irqsave(&dev_priv->rps.lock, flags); + if (--ring->irq_refcount.pm == 0) { + u32 pm_imr = I915_READ(GEN6_PMIMR); + I915_WRITE_IMR(ring, ~0); + I915_WRITE(GEN6_PMIMR, pm_imr | ring->irq_enable_mask); + POSTING_READ(GEN6_PMIMR); + } + spin_unlock_irqrestore(&dev_priv->rps.lock, flags); +} + static int i965_dispatch_execbuffer(struct intel_ring_buffer *ring, u32 offset, u32 length, @@ -1725,8 +1767,8 @@ int intel_init_vebox_ring_buffer(struct drm_device *dev) ring->add_request = gen6_add_request; ring->get_seqno = gen6_ring_get_seqno; ring->irq_enable_mask = 0; - ring->irq_get = NULL; - ring->irq_put = NULL; + ring->irq_get = hsw_vebox_get_irq; + ring->irq_put = hsw_vebox_put_irq; ring->dispatch_execbuffer = gen6_ring_dispatch_execbuffer; ring->sync_to = gen6_ring_sync; ring->semaphore_register[RCS] = MI_SEMAPHORE_SYNC_VER; diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index b2fe5b4..2a2bd20 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -58,8 +58,9 @@ struct intel_ring_buffer { u32 last_retired_head; struct { - u32 gt; - } irq_refcount; /* protected by dev_priv->irq_lock */ + u32 gt; /* protected by dev_priv->irq_lock */ + u32 pm; /* protected by dev_priv->rps.lock (sucks) */ + } irq_refcount; u32 irq_enable_mask; /* bitmask to enable ring interrupt */ u32 trace_irq_seqno; u32 sync_seqno[I915_NUM_RINGS-1];