From patchwork Thu Jun 18 07:49:25 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: yao mark X-Patchwork-Id: 6633881 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 87D529F326 for ; Thu, 18 Jun 2015 07:54:39 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9418D206C0 for ; Thu, 18 Jun 2015 07:54:38 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A6A63206C5 for ; Thu, 18 Jun 2015 07:54:37 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Z5Ucj-0006Ud-3n; Thu, 18 Jun 2015 07:52:33 +0000 Received: from regular1.263xmail.com ([211.150.99.131]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Z5UbS-0005mr-MB; Thu, 18 Jun 2015 07:52:12 +0000 Received: from mark.yao?rock-chips.com (unknown [192.168.167.172]) by regular1.263xmail.com (Postfix) with SMTP id ADF993B88; Thu, 18 Jun 2015 15:50:43 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 307D2472; Thu, 18 Jun 2015 15:50:35 +0800 (CST) X-RL-SENDER: mark.yao@rock-chips.com X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: mark.yao@rock-chips.com X-UNIQUE-TAG: <303255f7d57fd7b39fe2d69137059fe2> X-ATTACHMENT-NUM: 0 X-SENDER: yzq@rock-chips.com X-DNS-TYPE: 0 Received: from unknown (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith SMTP id 32604MWR5UD; Thu, 18 Jun 2015 15:50:40 +0800 (CST) From: Mark Yao To: dri-devel@lists.freedesktop.org Subject: [PATCH 1/6] drm/rockchip: import dma_buf to gem Date: Thu, 18 Jun 2015 15:49:25 +0800 Message-Id: <1434613770-6608-2-git-send-email-mark.yao@rock-chips.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1434613770-6608-1-git-send-email-mark.yao@rock-chips.com> References: <1434613770-6608-1-git-send-email-mark.yao@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150618_005211_993567_84FB7A71 X-CRM114-Status: GOOD ( 10.14 ) X-Spam-Score: -0.0 (/) Cc: zwl@rock-chips.com, Daniel Vetter , David Airlie , linux-kernel@vger.kernel.org, Daniel Kurtz , tfiga@chromium.org, linux-rockchip@lists.infradead.org, Rob Clark , Philipp Zabel , xw@rock-chips.com, dkm@rock-chips.com, Mark Yao , sandy.huang@rock-chips.com, linux-arm-kernel@lists.infradead.org, Heiko Stuebner X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.5 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 We want to display a buffer allocated by other driver, need import the buffer to gem. Signed-off-by: Mark Yao --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 1 + drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 45 +++++++++++++++++++++++++-- drivers/gpu/drm/rockchip/rockchip_drm_gem.h | 5 ++- 3 files changed, 47 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index 3962176..9001a90 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -287,6 +287,7 @@ static struct drm_driver rockchip_drm_driver = { .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_import = drm_gem_prime_import, + .gem_prime_import_sg_table = rockchip_gem_prime_import_sg_table, .gem_prime_export = drm_gem_prime_export, .gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table, .gem_prime_vmap = rockchip_gem_prime_vmap, diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c index eb2282c..2e30e23 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c @@ -18,6 +18,7 @@ #include #include +#include #include "rockchip_drm_drv.h" #include "rockchip_drm_gem.h" @@ -105,6 +106,38 @@ int rockchip_gem_mmap(struct file *filp, struct vm_area_struct *vma) return ret; } +struct drm_gem_object * +rockchip_gem_prime_import_sg_table(struct drm_device *drm, + struct dma_buf_attachment *attach, + struct sg_table *sgt) +{ + struct rockchip_gem_object *rk_obj; + struct drm_gem_object *obj; + int ret; + + rk_obj = kzalloc(sizeof(*rk_obj), GFP_KERNEL); + if (!rk_obj) + return ERR_PTR(-ENOMEM); + + obj = &rk_obj->base; + + drm_gem_private_object_init(drm, obj, attach->dmabuf->size); + + if (!dma_map_sg(drm->dev, sgt->sgl, sgt->nents, DMA_TO_DEVICE)) { + ret = -ENOMEM; + goto err_free_obj; + } + rk_obj->dma_addr = sg_dma_address(sgt->sgl); + rk_obj->sgt = sgt; + obj->size = sg_dma_len(sgt->sgl); + + return obj; + +err_free_obj: + kfree(rk_obj); + return ERR_PTR(ret); +} + struct rockchip_gem_object * rockchip_gem_create_object(struct drm_device *drm, unsigned int size, bool alloc_kmap) @@ -140,13 +173,19 @@ err_free_rk_obj: */ void rockchip_gem_free_object(struct drm_gem_object *obj) { + struct drm_device *drm = obj->dev; struct rockchip_gem_object *rk_obj; - drm_gem_free_mmap_offset(obj); - rk_obj = to_rockchip_obj(obj); - rockchip_gem_free_buf(rk_obj); + if (obj->import_attach) { + dma_unmap_sg(drm->dev, rk_obj->sgt->sgl, + rk_obj->sgt->nents, DMA_TO_DEVICE); + drm_prime_gem_destroy(obj, rk_obj->sgt); + } else { + drm_gem_free_mmap_offset(obj); + rockchip_gem_free_buf(rk_obj); + } kfree(rk_obj); } diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h index ad22618..9fd58e3 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h @@ -21,6 +21,7 @@ struct rockchip_gem_object { struct drm_gem_object base; unsigned int flags; + struct sg_table *sgt; void *kvaddr; dma_addr_t dma_addr; struct dma_attrs dma_attrs; @@ -28,8 +29,10 @@ struct rockchip_gem_object { struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj); struct drm_gem_object * -rockchip_gem_prime_import_sg_table(struct drm_device *dev, size_t size, +rockchip_gem_prime_import_sg_table(struct drm_device *drm, + struct dma_buf_attachment *attach, struct sg_table *sgt); + void *rockchip_gem_prime_vmap(struct drm_gem_object *obj); void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);