From patchwork Wed Jul 1 09:25:45 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ankitprasad.r.sharma@intel.com X-Patchwork-Id: 6701761 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 8553FC05AC for ; Wed, 1 Jul 2015 09:39:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AC1432066E for ; Wed, 1 Jul 2015 09:39:44 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id A76362063F for ; Wed, 1 Jul 2015 09:39:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0338C7A00D; Wed, 1 Jul 2015 02:39:43 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id AFB397A009 for ; Wed, 1 Jul 2015 02:39:41 -0700 (PDT) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga103.jf.intel.com with ESMTP; 01 Jul 2015 02:39:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,384,1432623600"; d="scan'208";a="517095857" Received: from ankitprasad-desktop.iind.intel.com ([10.223.82.39]) by FMSMGA003.fm.intel.com with ESMTP; 01 Jul 2015 02:39:39 -0700 From: ankitprasad.r.sharma@intel.com To: intel-gfx@lists.freedesktop.org Date: Wed, 1 Jul 2015 14:55:45 +0530 Message-Id: <1435742747-3782-3-git-send-email-ankitprasad.r.sharma@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1435742747-3782-1-git-send-email-ankitprasad.r.sharma@intel.com> References: <1435742747-3782-1-git-send-email-ankitprasad.r.sharma@intel.com> Cc: Ankitprasad Sharma , akash.goel@intel.com, shashidhar.hiremath@intel.com Subject: [Intel-gfx] [PATCH 2/4] drm/i915: Support for creating Stolen memory backed objects X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ankitprasad Sharma Extend the drm_i915_gem_create structure to add support for creating Stolen memory backed objects. Added a new flag through which user can specify the preference to allocate the object from stolen memory, which if set, an attempt will be made to allocate the object from stolen memory subject to the availability of free space in the stolen region. v2: Rebased to the latest drm-intel-nightly (Ankit) testcase: igt/gem_stolen Signed-off-by: Ankitprasad Sharma --- drivers/gpu/drm/i915/i915_dma.c | 3 +++ drivers/gpu/drm/i915/i915_gem.c | 31 +++++++++++++++++++++++++++---- include/uapi/drm/i915_drm.h | 15 +++++++++++++++ 3 files changed, 45 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index c5349fa..6045749 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -167,6 +167,9 @@ static int i915_getparam(struct drm_device *dev, void *data, value = i915.enable_hangcheck && intel_has_gpu_reset(dev); break; + case I915_PARAM_CREATE_VERSION: + value = 1; + break; default: DRM_DEBUG("Unknown parameter %d\n", param->param); return -EINVAL; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index a2a4a27..4acf331 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -391,7 +391,8 @@ static int i915_gem_create(struct drm_file *file, struct drm_device *dev, uint64_t size, - uint32_t *handle_p) + uint32_t *handle_p, + uint32_t flags) { struct drm_i915_gem_object *obj; int ret; @@ -401,8 +402,29 @@ i915_gem_create(struct drm_file *file, if (size == 0) return -EINVAL; + if (flags & ~(I915_CREATE_PLACEMENT_STOLEN)) + return -EINVAL; + /* Allocate the new object */ - obj = i915_gem_alloc_object(dev, size); + if (flags & I915_CREATE_PLACEMENT_STOLEN) { + mutex_lock(&dev->struct_mutex); + obj = i915_gem_object_create_stolen(dev, size); + if (!obj) { + mutex_unlock(&dev->struct_mutex); + return -ENOMEM; + } + + ret = i915_gem_exec_clear_object(obj, file->driver_priv); + if (ret) { + i915_gem_object_free(obj); + mutex_unlock(&dev->struct_mutex); + return ret; + } + + mutex_unlock(&dev->struct_mutex); + } else + obj = i915_gem_alloc_object(dev, size); + if (obj == NULL) return -ENOMEM; @@ -425,7 +447,7 @@ i915_gem_dumb_create(struct drm_file *file, args->pitch = ALIGN(args->width * DIV_ROUND_UP(args->bpp, 8), 64); args->size = args->pitch * args->height; return i915_gem_create(file, dev, - args->size, &args->handle); + args->size, &args->handle, 0); } /** @@ -438,7 +460,8 @@ i915_gem_create_ioctl(struct drm_device *dev, void *data, struct drm_i915_gem_create *args = data; return i915_gem_create(file, dev, - args->size, &args->handle); + args->size, &args->handle, + args->flags); } static inline int diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index f88cc1c..87992d1 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -355,6 +355,7 @@ typedef struct drm_i915_irq_wait { #define I915_PARAM_SUBSLICE_TOTAL 33 #define I915_PARAM_EU_TOTAL 34 #define I915_PARAM_HAS_GPU_RESET 35 +#define I915_PARAM_CREATE_VERSION 36 typedef struct drm_i915_getparam { int param; @@ -450,6 +451,20 @@ struct drm_i915_gem_create { */ __u32 handle; __u32 pad; + /** + * Requested flags (currently used for placement + * (which memory domain)) + * + * You can request that the object be created from special memory + * rather than regular system pages using this parameter. Such + * irregular objects may have certain restrictions (such as CPU + * access to a stolen object is verboten). + * + * This can be used in the future for other purposes too + * e.g. specifying tiling/caching/madvise + */ + __u32 flags; +#define I915_CREATE_PLACEMENT_STOLEN (1<<0) /* Cannot use CPU mmaps or pread/pwrite */ }; struct drm_i915_gem_pread {