From patchwork Fri Jun 13 15:37:29 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: oscar.mateo@intel.com X-Patchwork-Id: 4349811 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 [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 25C8DBEEE9 for ; Fri, 13 Jun 2014 15:43:05 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 403A42028D for ; Fri, 13 Jun 2014 15:43:04 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 3B5482022A for ; Fri, 13 Jun 2014 15:43:03 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D429B6EA61; Fri, 13 Jun 2014 08:43:02 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id 83BE56EA56 for ; Fri, 13 Jun 2014 08:43:01 -0700 (PDT) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 13 Jun 2014 08:43:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,471,1400050800"; d="scan'208";a="555136350" Received: from omateolo-linux2.iwi.intel.com ([172.28.253.145]) by fmsmga002.fm.intel.com with ESMTP; 13 Jun 2014 08:43:00 -0700 From: oscar.mateo@intel.com To: intel-gfx@lists.freedesktop.org Date: Fri, 13 Jun 2014 16:37:29 +0100 Message-Id: <1402673891-14618-12-git-send-email-oscar.mateo@intel.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1402673891-14618-1-git-send-email-oscar.mateo@intel.com> References: <1402673891-14618-1-git-send-email-oscar.mateo@intel.com> Subject: [Intel-gfx] [PATCH 11/53] drm/i915/bdw: Allocate ringbuffers for Logical Ring Contexts X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.15 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: Oscar Mateo As we have said a couple of times by now, logical ring contexts have their own ringbuffers: not only the backing pages, but the whole management struct. In a previous version of the series, this was achieved with two separate patches: drm/i915/bdw: Allocate ringbuffer backing objects for default global LRC drm/i915/bdw: Allocate ringbuffer for user-created LRCs Signed-off-by: Oscar Mateo --- drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/intel_lrc.c | 38 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 347308e..79799d8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -599,6 +599,7 @@ struct intel_context { /* Execlists */ struct { struct drm_i915_gem_object *obj; + struct intel_ringbuffer *ringbuf; } engine[I915_NUM_RINGS]; struct i915_ctx_hang_stats hang_stats; diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 952212f..b3a23e0 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -60,7 +60,11 @@ void intel_lr_context_free(struct intel_context *ctx) for (i = 0; i < I915_NUM_RINGS; i++) { struct drm_i915_gem_object *ctx_obj = ctx->engine[i].obj; + struct intel_ringbuffer *ringbuf = ctx->engine[i].ringbuf; + if (ctx_obj) { + intel_destroy_ring_buffer(ringbuf); + kfree(ringbuf); i915_gem_object_ggtt_unpin(ctx_obj); drm_gem_object_unreference(&ctx_obj->base); } @@ -94,6 +98,7 @@ int intel_lr_context_deferred_create(struct intel_context *ctx, struct drm_device *dev = ring->dev; struct drm_i915_gem_object *ctx_obj; uint32_t context_size; + struct intel_ringbuffer *ringbuf; int ret; WARN_ON(ctx->render_obj != NULL); @@ -114,6 +119,39 @@ int intel_lr_context_deferred_create(struct intel_context *ctx, return ret; } + ringbuf = kzalloc(sizeof(*ringbuf), GFP_KERNEL); + if (!ringbuf) { + DRM_DEBUG_DRIVER("Failed to allocate ringbuffer %s\n", + ring->name); + i915_gem_object_ggtt_unpin(ctx_obj); + drm_gem_object_unreference(&ctx_obj->base); + ret = -ENOMEM; + return ret; + } + + ringbuf->size = 32 * PAGE_SIZE; + ringbuf->effective_size = ringbuf->size; + ringbuf->head = 0; + ringbuf->tail = 0; + ringbuf->space = ringbuf->size; + ringbuf->last_retired_head = -1; + + /* TODO: For now we put this in the mappable region so that we can reuse + * the existing ringbuffer code which ioremaps it. When we start + * creating many contexts, this will no longer work and we must switch + * to a kmapish interface. + */ + ret = intel_allocate_ring_buffer(dev, ringbuf); + if (ret) { + DRM_DEBUG_DRIVER("Failed to allocate ringbuffer obj %s: %d\n", + ring->name, ret); + kfree(ringbuf); + i915_gem_object_ggtt_unpin(ctx_obj); + drm_gem_object_unreference(&ctx_obj->base); + return ret; + } + + ctx->engine[ring->id].ringbuf = ringbuf; ctx->engine[ring->id].obj = ctx_obj; return 0;