From patchwork Tue Sep 4 20:02:58 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 1403891 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork2.kernel.org (Postfix) with ESMTP id 29714DF280 for ; Tue, 4 Sep 2012 20:09:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E3C8AA01F7 for ; Tue, 4 Sep 2012 13:09:11 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (smtp.fireflyinternet.com [109.228.6.236]) by gabe.freedesktop.org (Postfix) with ESMTP id 633F5A01DA for ; Tue, 4 Sep 2012 13:06:23 -0700 (PDT) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.73.22; Received: from arrandale.alporthouse.com (unverified [78.156.73.22]) by fireflyinternet.com (Firefly Internet SMTP) with ESMTP id 121597506-1500050 for multiple; Tue, 04 Sep 2012 21:06:22 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Tue, 4 Sep 2012 21:02:58 +0100 Message-Id: <1346788996-19080-7-git-send-email-chris@chris-wilson.co.uk> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1346788996-19080-1-git-send-email-chris@chris-wilson.co.uk> References: <1346788996-19080-1-git-send-email-chris@chris-wilson.co.uk> X-Originating-IP: 78.156.73.22 Subject: [Intel-gfx] [PATCH 06/24] drm/i915: Convert the dmabuf object to use the new i915_gem_object_ops 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 By providing a callback for when we need to bind the pages, and then release them again later, we can shorten the amount of time we hold the foreign pages mapped and pinned, and importantly the dmabuf objects then behave as any other normal object with respect to the shrinker and memory management. Signed-off-by: Chris Wilson Reviewed-by: Ben Widawsky --- drivers/gpu/drm/i915/i915_drv.h | 1 - drivers/gpu/drm/i915/i915_gem.c | 10 ++++---- drivers/gpu/drm/i915/i915_gem_dmabuf.c | 44 ++++++++++++++++++++++---------- drivers/gpu/drm/i915/i915_gem_gtt.c | 4 +-- 4 files changed, 37 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 1a714fa..a86f50d 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -998,7 +998,6 @@ struct drm_i915_gem_object { int pages_pin_count; /* prime dma-buf support */ - struct sg_table *sg_table; void *dma_buf_vmapping; int vmapping_count; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 06589a9..58075e3 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1692,7 +1692,7 @@ i915_gem_object_put_pages(struct drm_i915_gem_object *obj) { const struct drm_i915_gem_object_ops *ops = obj->ops; - if (obj->sg_table || obj->pages == NULL) + if (obj->pages == NULL) return 0; BUG_ON(obj->gtt_space); @@ -1838,7 +1838,7 @@ i915_gem_object_get_pages(struct drm_i915_gem_object *obj) const struct drm_i915_gem_object_ops *ops = obj->ops; int ret; - if (obj->sg_table || obj->pages) + if (obj->pages) return 0; BUG_ON(obj->pages_pin_count); @@ -3731,9 +3731,6 @@ void i915_gem_free_object(struct drm_gem_object *gem_obj) trace_i915_gem_object_destroy(obj); - if (gem_obj->import_attach) - drm_prime_gem_destroy(gem_obj, obj->sg_table); - if (obj->phys_obj) i915_gem_detach_phys_object(dev, obj); @@ -3755,6 +3752,9 @@ void i915_gem_free_object(struct drm_gem_object *gem_obj) BUG_ON(obj->pages); + if (obj->base.import_attach) + drm_prime_gem_destroy(&obj->base, NULL); + drm_gem_object_release(&obj->base); i915_gem_info_remove_obj(dev_priv, obj->base.size); diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c index 4bb1b94..ca3497e 100644 --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c @@ -82,7 +82,8 @@ out: } static void i915_gem_unmap_dma_buf(struct dma_buf_attachment *attachment, - struct sg_table *sg, enum dma_data_direction dir) + struct sg_table *sg, + enum dma_data_direction dir) { dma_unmap_sg(attachment->dev, sg->sgl, sg->nents, dir); sg_free_table(sg); @@ -228,11 +229,35 @@ struct dma_buf *i915_gem_prime_export(struct drm_device *dev, return dma_buf_export(obj, &i915_dmabuf_ops, obj->base.size, 0600); } +static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj) +{ + struct sg_table *sg; + + sg = dma_buf_map_attachment(obj->base.import_attach, DMA_BIDIRECTIONAL); + if (IS_ERR(sg)) + return PTR_ERR(sg); + + obj->pages = sg; + obj->has_dma_mapping = true; + return 0; +} + +static void i915_gem_object_put_pages_dmabuf(struct drm_i915_gem_object *obj) +{ + dma_buf_unmap_attachment(obj->base.import_attach, + obj->pages, DMA_BIDIRECTIONAL); + obj->has_dma_mapping = false; +} + +static const struct drm_i915_gem_object_ops i915_gem_object_dmabuf_ops = { + .get_pages = i915_gem_object_get_pages_dmabuf, + .put_pages = i915_gem_object_put_pages_dmabuf, +}; + struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf) { struct dma_buf_attachment *attach; - struct sg_table *sg; struct drm_i915_gem_object *obj; int ret; @@ -251,34 +276,25 @@ struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev, if (IS_ERR(attach)) return ERR_CAST(attach); - sg = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL); - if (IS_ERR(sg)) { - ret = PTR_ERR(sg); - goto fail_detach; - } obj = kzalloc(sizeof(*obj), GFP_KERNEL); if (obj == NULL) { ret = -ENOMEM; - goto fail_unmap; + goto fail_detach; } ret = drm_gem_private_object_init(dev, &obj->base, dma_buf->size); if (ret) { kfree(obj); - goto fail_unmap; + goto fail_detach; } - obj->has_dma_mapping = true; - obj->sg_table = sg; + i915_gem_object_init(obj, &i915_gem_object_dmabuf_ops); obj->base.import_attach = attach; return &obj->base; -fail_unmap: - dma_buf_unmap_attachment(attach, sg, DMA_BIDIRECTIONAL); fail_detach: dma_buf_detach(dma_buf, attach); return ERR_PTR(ret); } - diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 6746109..c86dc59 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -234,7 +234,7 @@ void i915_ppgtt_bind_object(struct i915_hw_ppgtt *ppgtt, } i915_ppgtt_insert_sg_entries(ppgtt, - obj->sg_table ?: obj->pages, + obj->pages, obj->gtt_space->start >> PAGE_SHIFT, pte_flags); } @@ -325,7 +325,7 @@ void i915_gem_gtt_bind_object(struct drm_i915_gem_object *obj, struct drm_device *dev = obj->base.dev; unsigned int agp_type = cache_level_to_agp_type(dev, cache_level); - intel_gtt_insert_sg_entries(obj->sg_table ?: obj->pages, + intel_gtt_insert_sg_entries(obj->pages, obj->gtt_space->start >> PAGE_SHIFT, agp_type); obj->has_global_gtt_mapping = 1;