From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eugeni Dodonov Subject: [PATCH] drm/i915: add a LLC feature flag in device description Date: Mon, 12 Dec 2011 22:05:21 -0200 Message-ID: <1323734721-1381-1-git-send-email-eugeni.dodonov@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from oproxy8-pub.bluehost.com (oproxy8-pub.bluehost.com [69.89.22.20]) by gabe.freedesktop.org (Postfix) with SMTP id CB8399E9A6 for ; Mon, 12 Dec 2011 16:04:57 -0800 (PST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: intel-gfx@lists.freedesktop.org Cc: Eugeni Dodonov List-Id: intel-gfx@lists.freedesktop.org LLC is not SNB-specific, so we should check for it in a more generic way. Signed-off-by: Eugeni Dodonov --- drivers/gpu/drm/i915/i915_drv.c | 2 ++ drivers/gpu/drm/i915/i915_drv.h | 2 ++ drivers/gpu/drm/i915/i915_gem.c | 4 ++-- 3 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index e9c2cfe..b7ac903 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -214,6 +214,7 @@ static const struct intel_device_info intel_sandybridge_d_info = { .need_gfx_hws = 1, .has_hotplug = 1, .has_bsd_ring = 1, .has_blt_ring = 1, + .has_llc = 1, }; static const struct intel_device_info intel_sandybridge_m_info = { @@ -222,6 +223,7 @@ static const struct intel_device_info intel_sandybridge_m_info = { .has_fbc = 1, .has_bsd_ring = 1, .has_blt_ring = 1, + .has_llc = 1, }; static const struct intel_device_info intel_ivybridge_d_info = { diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 06a37f4..24969eb 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -247,6 +247,7 @@ struct intel_device_info { u8 supports_tv:1; u8 has_bsd_ring:1; u8 has_blt_ring:1; + u8 has_llc:1; }; enum no_fbc_reason { @@ -960,6 +961,7 @@ struct drm_i915_file_private { #define HAS_BSD(dev) (INTEL_INFO(dev)->has_bsd_ring) #define HAS_BLT(dev) (INTEL_INFO(dev)->has_blt_ring) +#define HAS_LLC(dev) (INTEL_INFO(dev)->has_llc) #define I915_NEED_GFX_HWS(dev) (INTEL_INFO(dev)->need_gfx_hws) #define HAS_OVERLAY(dev) (INTEL_INFO(dev)->has_overlay) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index d18b07a..2c0fa78 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -3613,8 +3613,8 @@ struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev, obj->base.write_domain = I915_GEM_DOMAIN_CPU; obj->base.read_domains = I915_GEM_DOMAIN_CPU; - if (IS_GEN6(dev)) { - /* On Gen6, we can have the GPU use the LLC (the CPU + if (HAS_LLC(dev)) { + /* On some devices, we can have the GPU use the LLC (the CPU * cache) for about a 10% performance improvement * compared to uncached. Graphics requests other than * display scanout are coherent with the CPU in -- 1.7.7.4