From patchwork Mon Nov 2 22:06:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 11876259 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6849C388F7 for ; Tue, 3 Nov 2020 08:15:14 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 528C3223FD for ; Tue, 3 Nov 2020 08:15:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 528C3223FD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=crapouillou.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 51B006EC04; Tue, 3 Nov 2020 08:14:32 +0000 (UTC) Received: from aposti.net (aposti.net [89.234.176.197]) by gabe.freedesktop.org (Postfix) with ESMTPS id 719496E58A for ; Mon, 2 Nov 2020 22:07:21 +0000 (UTC) From: Paul Cercueil To: David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann Subject: [PATCH 1/5] drm: Add and export function drm_gem_cma_create_noncoherent Date: Mon, 2 Nov 2020 22:06:47 +0000 Message-Id: <20201102220651.22069-2-paul@crapouillou.net> In-Reply-To: <20201102220651.22069-1-paul@crapouillou.net> References: <20201102220651.22069-1-paul@crapouillou.net> MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 03 Nov 2020 08:14:25 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paul Cercueil , od@zcrc.me, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This function can be used by drivers that need to create a GEM object with non-coherent backing memory. Signed-off-by: Paul Cercueil --- drivers/gpu/drm/drm_gem_cma_helper.c | 71 +++++++++++++++++++++------- include/drm/drm_gem_cma_helper.h | 2 + 2 files changed, 56 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c index 2165633c9b9e..717871d741fb 100644 --- a/drivers/gpu/drm/drm_gem_cma_helper.c +++ b/drivers/gpu/drm/drm_gem_cma_helper.c @@ -77,21 +77,10 @@ __drm_gem_cma_create(struct drm_device *drm, size_t size) return ERR_PTR(ret); } -/** - * drm_gem_cma_create - allocate an object with the given size - * @drm: DRM device - * @size: size of the object to allocate - * - * This function creates a CMA GEM object and allocates a contiguous chunk of - * memory as backing store. The backing memory has the writecombine attribute - * set. - * - * Returns: - * A struct drm_gem_cma_object * on success or an ERR_PTR()-encoded negative - * error code on failure. - */ -struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, - size_t size) +static struct drm_gem_cma_object * +drm_gem_cma_create_with_cache_param(struct drm_device *drm, + size_t size, + bool noncoherent) { struct drm_gem_cma_object *cma_obj; int ret; @@ -102,8 +91,16 @@ struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, if (IS_ERR(cma_obj)) return cma_obj; - cma_obj->vaddr = dma_alloc_wc(drm->dev, size, &cma_obj->paddr, - GFP_KERNEL | __GFP_NOWARN); + if (noncoherent) { + cma_obj->vaddr = dma_alloc_noncoherent(drm->dev, size, + &cma_obj->paddr, + DMA_TO_DEVICE, + GFP_KERNEL | __GFP_NOWARN); + + } else { + cma_obj->vaddr = dma_alloc_wc(drm->dev, size, &cma_obj->paddr, + GFP_KERNEL | __GFP_NOWARN); + } if (!cma_obj->vaddr) { drm_dbg(drm, "failed to allocate buffer with size %zu\n", size); @@ -117,8 +114,48 @@ struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, drm_gem_object_put(&cma_obj->base); return ERR_PTR(ret); } + +/** + * drm_gem_cma_create - allocate an object with the given size + * @drm: DRM device + * @size: size of the object to allocate + * + * This function creates a CMA GEM object and allocates a contiguous chunk of + * memory as backing store. The backing memory has the writecombine attribute + * set. + * + * Returns: + * A struct drm_gem_cma_object * on success or an ERR_PTR()-encoded negative + * error code on failure. + */ +struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, + size_t size) +{ + return drm_gem_cma_create_with_cache_param(drm, size, false); +} EXPORT_SYMBOL_GPL(drm_gem_cma_create); +/** + * drm_gem_cma_create_noncoherent - allocate an object with the given size + * and non-coherent cache attribute + * @drm: DRM device + * @size: size of the object to allocate + * + * This function creates a CMA GEM object and allocates a contiguous chunk of + * memory as backing store. The backing memory has the noncoherent attribute + * set. + * + * Returns: + * A struct drm_gem_cma_object * on success or an ERR_PTR()-encoded negative + * error code on failure. + */ +struct drm_gem_cma_object * +drm_gem_cma_create_noncoherent(struct drm_device *drm, size_t size) +{ + return drm_gem_cma_create_with_cache_param(drm, size, true); +} +EXPORT_SYMBOL_GPL(drm_gem_cma_create_noncoherent); + /** * drm_gem_cma_create_with_handle - allocate an object with the given size and * return a GEM handle to it diff --git a/include/drm/drm_gem_cma_helper.h b/include/drm/drm_gem_cma_helper.h index 2bfa2502607a..071c73ad7177 100644 --- a/include/drm/drm_gem_cma_helper.h +++ b/include/drm/drm_gem_cma_helper.h @@ -82,6 +82,8 @@ int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma); /* allocate physical memory */ struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, size_t size); +struct drm_gem_cma_object * +drm_gem_cma_create_noncoherent(struct drm_device *drm, size_t size); extern const struct vm_operations_struct drm_gem_cma_vm_ops; From patchwork Mon Nov 2 22:06:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 11876317 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1D9A9C388F2 for ; Tue, 3 Nov 2020 08:16:54 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C2C4D206E3 for ; Tue, 3 Nov 2020 08:16:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C2C4D206E3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=crapouillou.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D76876EBF6; Tue, 3 Nov 2020 08:15:04 +0000 (UTC) Received: from aposti.net (aposti.net [89.234.176.197]) by gabe.freedesktop.org (Postfix) with ESMTPS id 56E1B6E56A for ; Mon, 2 Nov 2020 22:07:28 +0000 (UTC) From: Paul Cercueil To: David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann Subject: [PATCH 2/5] drm: Add and export function drm_gem_cma_dumb_create_noncoherent Date: Mon, 2 Nov 2020 22:06:48 +0000 Message-Id: <20201102220651.22069-3-paul@crapouillou.net> In-Reply-To: <20201102220651.22069-1-paul@crapouillou.net> References: <20201102220651.22069-1-paul@crapouillou.net> MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 03 Nov 2020 08:14:25 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paul Cercueil , od@zcrc.me, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This function can be used by drivers to create dumb buffers with non-coherent backing memory. Signed-off-by: Paul Cercueil --- drivers/gpu/drm/drm_gem_cma_helper.c | 37 +++++++++++++++++++++++++--- include/drm/drm_gem_cma_helper.h | 4 +++ 2 files changed, 37 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c index 717871d741fb..3bdd67795e20 100644 --- a/drivers/gpu/drm/drm_gem_cma_helper.c +++ b/drivers/gpu/drm/drm_gem_cma_helper.c @@ -163,6 +163,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_create_noncoherent); * @drm: DRM device * @size: size of the object to allocate * @handle: return location for the GEM handle + * @noncoherent: allocate object with non-coherent cache attribute * * This function creates a CMA GEM object, allocating a physically contiguous * chunk of memory as backing store. The GEM object is then added to the list @@ -175,13 +176,13 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_create_noncoherent); static struct drm_gem_cma_object * drm_gem_cma_create_with_handle(struct drm_file *file_priv, struct drm_device *drm, size_t size, - uint32_t *handle) + uint32_t *handle, bool noncoherent) { struct drm_gem_cma_object *cma_obj; struct drm_gem_object *gem_obj; int ret; - cma_obj = drm_gem_cma_create(drm, size); + cma_obj = drm_gem_cma_create_with_cache_param(drm, size, noncoherent); if (IS_ERR(cma_obj)) return cma_obj; @@ -258,7 +259,7 @@ int drm_gem_cma_dumb_create_internal(struct drm_file *file_priv, args->size = args->pitch * args->height; cma_obj = drm_gem_cma_create_with_handle(file_priv, drm, args->size, - &args->handle); + &args->handle, false); return PTR_ERR_OR_ZERO(cma_obj); } EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_create_internal); @@ -291,11 +292,39 @@ int drm_gem_cma_dumb_create(struct drm_file *file_priv, args->size = args->pitch * args->height; cma_obj = drm_gem_cma_create_with_handle(file_priv, drm, args->size, - &args->handle); + &args->handle, false); return PTR_ERR_OR_ZERO(cma_obj); } EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_create); +/** + * drm_gem_cma_dumb_create_noncoherent - create a dumb buffer object with + * non-coherent cache attribute + * @file_priv: DRM file-private structure to create the dumb buffer for + * @drm: DRM device + * @args: IOCTL data + * + * Same as drm_gem_cma_dumb_create, but the dumb buffer object created has + * the non-coherent cache attribute set. + * + * Returns: + * 0 on success or a negative error code on failure. + */ +int drm_gem_cma_dumb_create_noncoherent(struct drm_file *file_priv, + struct drm_device *drm, + struct drm_mode_create_dumb *args) +{ + struct drm_gem_cma_object *cma_obj; + + args->pitch = DIV_ROUND_UP(args->width * args->bpp, 8); + args->size = args->pitch * args->height; + + cma_obj = drm_gem_cma_create_with_handle(file_priv, drm, args->size, + &args->handle, true); + return PTR_ERR_OR_ZERO(cma_obj); +} +EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_create_noncoherent); + const struct vm_operations_struct drm_gem_cma_vm_ops = { .open = drm_gem_vm_open, .close = drm_gem_vm_close, diff --git a/include/drm/drm_gem_cma_helper.h b/include/drm/drm_gem_cma_helper.h index 071c73ad7177..d0e6a1cd0950 100644 --- a/include/drm/drm_gem_cma_helper.h +++ b/include/drm/drm_gem_cma_helper.h @@ -76,6 +76,10 @@ int drm_gem_cma_dumb_create(struct drm_file *file_priv, struct drm_device *drm, struct drm_mode_create_dumb *args); +int drm_gem_cma_dumb_create_noncoherent(struct drm_file *file_priv, + struct drm_device *drm, + struct drm_mode_create_dumb *args); + /* set vm_flags and we can change the VM attribute to other one at here */ int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma); From patchwork Mon Nov 2 22:06:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 11876287 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18C51C2D0A3 for ; Tue, 3 Nov 2020 08:15:59 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B5F7A223BD for ; Tue, 3 Nov 2020 08:15:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B5F7A223BD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=crapouillou.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A923A6EC4A; Tue, 3 Nov 2020 08:14:40 +0000 (UTC) Received: from aposti.net (aposti.net [89.234.176.197]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0611E6E591 for ; Mon, 2 Nov 2020 22:07:34 +0000 (UTC) From: Paul Cercueil To: David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann Subject: [PATCH 3/5] drm: Add and export function drm_gem_cma_mmap_noncoherent Date: Mon, 2 Nov 2020 22:06:49 +0000 Message-Id: <20201102220651.22069-4-paul@crapouillou.net> In-Reply-To: <20201102220651.22069-1-paul@crapouillou.net> References: <20201102220651.22069-1-paul@crapouillou.net> MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 03 Nov 2020 08:14:25 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paul Cercueil , od@zcrc.me, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This function can be used by drivers that need to mmap dumb buffers created with non-coherent backing memory. Signed-off-by: Paul Cercueil --- drivers/gpu/drm/drm_gem_cma_helper.c | 39 ++++++++++++++++++++++++++++ include/drm/drm_gem_cma_helper.h | 2 ++ 2 files changed, 41 insertions(+) diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c index 3bdd67795e20..4ed63f4896bd 100644 --- a/drivers/gpu/drm/drm_gem_cma_helper.c +++ b/drivers/gpu/drm/drm_gem_cma_helper.c @@ -387,6 +387,45 @@ int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma) } EXPORT_SYMBOL_GPL(drm_gem_cma_mmap); +/** + * drm_gem_cma_mmap_noncoherent - memory-map a CMA GEM object with + * non-coherent cache attribute + * @filp: file object + * @vma: VMA for the area to be mapped + * + * Just like drm_gem_cma_mmap, but for a GEM object backed by non-coherent + * memory. + * + * Returns: + * 0 on success or a negative error code on failure. + */ +int drm_gem_cma_mmap_noncoherent(struct file *filp, struct vm_area_struct *vma) +{ + struct drm_gem_cma_object *cma_obj; + int ret; + + ret = drm_gem_mmap(filp, vma); + if (ret) + return ret; + + cma_obj = to_drm_gem_cma_obj(vma->vm_private_data); + + /* + * Clear the VM_PFNMAP flag that was set by drm_gem_mmap(), and set the + * vm_pgoff (used as a fake buffer offset by DRM) to 0 as we want to map + * the whole buffer. + */ + vma->vm_flags &= ~VM_PFNMAP; + vma->vm_pgoff = 0; + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + + return remap_pfn_range(vma, vma->vm_start, + cma_obj->paddr >> PAGE_SHIFT, + vma->vm_end - vma->vm_start, + vma->vm_page_prot); +} +EXPORT_SYMBOL_GPL(drm_gem_cma_mmap_noncoherent); + #ifndef CONFIG_MMU /** * drm_gem_cma_get_unmapped_area - propose address for mapping in noMMU cases diff --git a/include/drm/drm_gem_cma_helper.h b/include/drm/drm_gem_cma_helper.h index d0e6a1cd0950..6b01ad5581c3 100644 --- a/include/drm/drm_gem_cma_helper.h +++ b/include/drm/drm_gem_cma_helper.h @@ -83,6 +83,8 @@ int drm_gem_cma_dumb_create_noncoherent(struct drm_file *file_priv, /* set vm_flags and we can change the VM attribute to other one at here */ int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma); +int drm_gem_cma_mmap_noncoherent(struct file *filep, struct vm_area_struct *vma); + /* allocate physical memory */ struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, size_t size); From patchwork Mon Nov 2 22:06:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 11876269 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D425C388F2 for ; Tue, 3 Nov 2020 08:15:23 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E4BF9223BD for ; Tue, 3 Nov 2020 08:15:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E4BF9223BD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=crapouillou.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 74B406EC2E; Tue, 3 Nov 2020 08:14:36 +0000 (UTC) Received: from aposti.net (aposti.net [89.234.176.197]) by gabe.freedesktop.org (Postfix) with ESMTPS id D76D36E58A for ; Mon, 2 Nov 2020 22:07:48 +0000 (UTC) From: Paul Cercueil To: David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann Subject: [PATCH 5/5] drm/ingenic: Add option to alloc cached GEM buffers Date: Mon, 2 Nov 2020 22:06:51 +0000 Message-Id: <20201102220651.22069-6-paul@crapouillou.net> In-Reply-To: <20201102220651.22069-1-paul@crapouillou.net> References: <20201102220651.22069-1-paul@crapouillou.net> MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 03 Nov 2020 08:14:24 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paul Cercueil , od@zcrc.me, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" With the module parameter ingenic-drm.cached_gem_buffers, it is possible to specify that we want GEM buffers backed by non-coherent memory. This dramatically speeds up software rendering on Ingenic SoCs, even for tasks where write-combine memory should in theory be faster (e.g. simple blits). Leave it disabled by default, since it is specific to one use-case (software rendering). Signed-off-by: Paul Cercueil --- drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 58 +++++++++++++++++++++-- drivers/gpu/drm/ingenic/ingenic-drm.h | 4 ++ drivers/gpu/drm/ingenic/ingenic-ipu.c | 12 ++++- 3 files changed, 69 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c index b9c156e13156..1ec2ec2faa04 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -22,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -97,6 +99,11 @@ struct ingenic_drm { struct notifier_block clock_nb; }; +static bool ingenic_drm_cached_gem_buf; +module_param_named(cached_gem_buffers, ingenic_drm_cached_gem_buf, bool, 0400); +MODULE_PARM_DESC(cached_gem_buffers, + "Enable fully cached GEM buffers [default=false]"); + static bool ingenic_drm_writeable_reg(struct device *dev, unsigned int reg) { switch (reg) { @@ -400,6 +407,8 @@ static int ingenic_drm_plane_atomic_check(struct drm_plane *plane, plane->state->fb->format->format != state->fb->format->format)) crtc_state->mode_changed = true; + drm_atomic_helper_check_plane_damage(state->state, state); + return 0; } @@ -531,6 +540,14 @@ static void ingenic_drm_update_palette(struct ingenic_drm *priv, } } +void ingenic_drm_sync_data(struct device *dev, + struct drm_plane_state *old_state, + struct drm_plane_state *state) +{ + if (ingenic_drm_cached_gem_buf) + drm_gem_cma_sync_data(dev, old_state, state); +} + static void ingenic_drm_plane_atomic_update(struct drm_plane *plane, struct drm_plane_state *oldstate) { @@ -543,6 +560,8 @@ static void ingenic_drm_plane_atomic_update(struct drm_plane *plane, u32 fourcc; if (state && state->fb) { + ingenic_drm_sync_data(priv->dev, oldstate, state); + crtc_state = state->crtc->state; addr = drm_fb_cma_get_gem_addr(state->fb, state, 0); @@ -714,7 +733,36 @@ static void ingenic_drm_disable_vblank(struct drm_crtc *crtc) regmap_update_bits(priv->map, JZ_REG_LCD_CTRL, JZ_LCD_CTRL_EOF_IRQ, 0); } -DEFINE_DRM_GEM_CMA_FOPS(ingenic_drm_fops); +static struct drm_framebuffer * +ingenic_drm_gem_fb_create(struct drm_device *dev, struct drm_file *file, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + if (ingenic_drm_cached_gem_buf) + return drm_gem_fb_create_with_dirty(dev, file, mode_cmd); + + return drm_gem_fb_create(dev, file, mode_cmd); +} + +static int ingenic_drm_gem_cma_mmap(struct file *filp, + struct vm_area_struct *vma) +{ + if (ingenic_drm_cached_gem_buf) + return drm_gem_cma_mmap_noncoherent(filp, vma); + + return drm_gem_cma_mmap(filp, vma); +} + +static const struct file_operations ingenic_drm_fops = { + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .unlocked_ioctl = drm_ioctl, + .compat_ioctl = drm_compat_ioctl, + .poll = drm_poll, + .read = drm_read, + .llseek = noop_llseek, + .mmap = ingenic_drm_gem_cma_mmap, +}; static struct drm_driver ingenic_drm_driver_data = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, @@ -726,7 +774,7 @@ static struct drm_driver ingenic_drm_driver_data = { .patchlevel = 0, .fops = &ingenic_drm_fops, - DRM_GEM_CMA_DRIVER_OPS, + DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(drm_gem_cma_dumb_create_noncoherent), .irq_handler = ingenic_drm_irq_handler, }; @@ -778,7 +826,7 @@ static const struct drm_encoder_helper_funcs ingenic_drm_encoder_helper_funcs = }; static const struct drm_mode_config_funcs ingenic_drm_mode_config_funcs = { - .fb_create = drm_gem_fb_create, + .fb_create = ingenic_drm_gem_fb_create, .output_poll_changed = drm_fb_helper_output_poll_changed, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, @@ -932,6 +980,8 @@ static int ingenic_drm_bind(struct device *dev, bool has_components) return ret; } + drm_plane_enable_fb_damage_clips(&priv->f1); + drm_crtc_helper_add(&priv->crtc, &ingenic_drm_crtc_helper_funcs); ret = drm_crtc_init_with_planes(drm, &priv->crtc, &priv->f1, @@ -960,6 +1010,8 @@ static int ingenic_drm_bind(struct device *dev, bool has_components) return ret; } + drm_plane_enable_fb_damage_clips(&priv->f0); + if (IS_ENABLED(CONFIG_DRM_INGENIC_IPU) && has_components) { ret = component_bind_all(dev, drm); if (ret) { diff --git a/drivers/gpu/drm/ingenic/ingenic-drm.h b/drivers/gpu/drm/ingenic/ingenic-drm.h index 9b48ce02803d..ee3a892c0383 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm.h +++ b/drivers/gpu/drm/ingenic/ingenic-drm.h @@ -171,6 +171,10 @@ void ingenic_drm_plane_config(struct device *dev, struct drm_plane *plane, u32 fourcc); void ingenic_drm_plane_disable(struct device *dev, struct drm_plane *plane); +void ingenic_drm_sync_data(struct device *dev, + struct drm_plane_state *old_state, + struct drm_plane_state *state); + extern struct platform_driver *ingenic_ipu_driver_ptr; #endif /* DRIVERS_GPU_DRM_INGENIC_INGENIC_DRM_H */ diff --git a/drivers/gpu/drm/ingenic/ingenic-ipu.c b/drivers/gpu/drm/ingenic/ingenic-ipu.c index fc8c6e970ee3..38c83e8cc6a5 100644 --- a/drivers/gpu/drm/ingenic/ingenic-ipu.c +++ b/drivers/gpu/drm/ingenic/ingenic-ipu.c @@ -20,6 +20,7 @@ #include #include +#include #include #include #include @@ -316,6 +317,8 @@ static void ingenic_ipu_plane_atomic_update(struct drm_plane *plane, JZ_IPU_CTRL_CHIP_EN | JZ_IPU_CTRL_LCDC_SEL); } + ingenic_drm_sync_data(ipu->master, oldstate, state); + /* New addresses will be committed in vblank handler... */ ipu->addr_y = drm_fb_cma_get_gem_addr(state->fb, state, 0); if (finfo->num_planes > 1) @@ -534,7 +537,7 @@ static int ingenic_ipu_plane_atomic_check(struct drm_plane *plane, if (!state->crtc || !crtc_state->mode.hdisplay || !crtc_state->mode.vdisplay) - return 0; + goto out_check_damage; /* Plane must be fully visible */ if (state->crtc_x < 0 || state->crtc_y < 0 || @@ -551,7 +554,7 @@ static int ingenic_ipu_plane_atomic_check(struct drm_plane *plane, return -EINVAL; if (!osd_changed(state, plane->state)) - return 0; + goto out_check_damage; crtc_state->mode_changed = true; @@ -578,6 +581,9 @@ static int ingenic_ipu_plane_atomic_check(struct drm_plane *plane, ipu->denom_w = denom_w; ipu->denom_h = denom_h; +out_check_damage: + drm_atomic_helper_check_plane_damage(state->state, state); + return 0; } @@ -759,6 +765,8 @@ static int ingenic_ipu_bind(struct device *dev, struct device *master, void *d) return err; } + drm_plane_enable_fb_damage_clips(plane); + /* * Sharpness settings range is [0,32] * 0 : nearest-neighbor