From patchwork Thu May 2 02:48:14 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Airlie X-Patchwork-Id: 2509971 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork1.kernel.org (Postfix) with ESMTP id 86B1F3FCA5 for ; Thu, 2 May 2013 03:26:37 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 53E20E5CFA for ; Wed, 1 May 2013 20:26:37 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by gabe.freedesktop.org (Postfix) with ESMTP id 42F9EE6006 for ; Wed, 1 May 2013 19:48:21 -0700 (PDT) Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r422mKsp010438 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 1 May 2013 22:48:20 -0400 Received: from prime.bne.redhat.com (dhcp-40-183.bne.redhat.com [10.64.40.183]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id r422mGum022881 for ; Wed, 1 May 2013 22:48:20 -0400 From: Dave Airlie To: dri-devel@lists.freedesktop.org Subject: [PATCH 3/3] drm/cirrus: deal with bo reserve fail in dirty update path Date: Thu, 2 May 2013 12:48:14 +1000 Message-Id: <1367462894-6558-4-git-send-email-airlied@gmail.com> In-Reply-To: <1367462894-6558-1-git-send-email-airlied@gmail.com> References: <1367462894-6558-1-git-send-email-airlied@gmail.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Errors-To: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org From: Dave Airlie Port over the mgag200 fix to cirrus as it suffers the same issue. On F19 testing, it was noticed we get a lot of errors in dmesg about being unable to reserve the buffer when plymouth starts, this is due to the buffer being in the process of migrating, so it makes sense we can't reserve it. In order to deal with it, this adds delayed updates for the dirty updates, when the bo is unreservable, in the normal console case this shouldn't ever happen, its just when plymouth or X is pushing the console bo to system memory. Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/cirrus/cirrus_drv.h | 2 ++ drivers/gpu/drm/cirrus/cirrus_fbdev.c | 38 ++++++++++++++++++++++++++++++++++- drivers/gpu/drm/cirrus/cirrus_ttm.c | 2 +- 3 files changed, 40 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/cirrus/cirrus_drv.h b/drivers/gpu/drm/cirrus/cirrus_drv.h index 6e0cc72..7ca0595 100644 --- a/drivers/gpu/drm/cirrus/cirrus_drv.h +++ b/drivers/gpu/drm/cirrus/cirrus_drv.h @@ -154,6 +154,8 @@ struct cirrus_fbdev { struct list_head fbdev_list; void *sysram; int size; + int x1, y1, x2, y2; /* dirty rect */ + spinlock_t dirty_lock; }; struct cirrus_bo { diff --git a/drivers/gpu/drm/cirrus/cirrus_fbdev.c b/drivers/gpu/drm/cirrus/cirrus_fbdev.c index e25afcc..3541b56 100644 --- a/drivers/gpu/drm/cirrus/cirrus_fbdev.c +++ b/drivers/gpu/drm/cirrus/cirrus_fbdev.c @@ -27,16 +27,51 @@ static void cirrus_dirty_update(struct cirrus_fbdev *afbdev, int bpp = (afbdev->gfb.base.bits_per_pixel + 7)/8; int ret; bool unmap = false; + bool store_for_later = false; + int x2, y2; + unsigned long flags; obj = afbdev->gfb.obj; bo = gem_to_cirrus_bo(obj); + /* + * try and reserve the BO, if we fail with busy + * then the BO is being moved and we should + * store up the damage until later. + */ ret = cirrus_bo_reserve(bo, true); if (ret) { - DRM_ERROR("failed to reserve fb bo\n"); + if (ret != -EBUSY) + return; + store_for_later = true; + } + + x2 = x + width - 1; + y2 = y + height - 1; + spin_lock_irqsave(&afbdev->dirty_lock, flags); + + if (afbdev->y1 < y) + y = afbdev->y1; + if (afbdev->y2 > y2) + y2 = afbdev->y2; + if (afbdev->x1 < x) + x = afbdev->x1; + if (afbdev->x2 > x2) + x2 = afbdev->x2; + + if (store_for_later) { + afbdev->x1 = x; + afbdev->x2 = x2; + afbdev->y1 = y; + afbdev->y2 = y2; + spin_unlock_irqrestore(&afbdev->dirty_lock, flags); return; } + afbdev->x1 = afbdev->y1 = INT_MAX; + afbdev->x2 = afbdev->y2 = 0; + spin_unlock_irqrestore(&afbdev->dirty_lock, flags); + if (!bo->kmap.virtual) { ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap); if (ret) { @@ -268,6 +303,7 @@ int cirrus_fbdev_init(struct cirrus_device *cdev) cdev->mode_info.gfbdev = gfbdev; gfbdev->helper.funcs = &cirrus_fb_helper_funcs; + spin_lock_init(&gfbdev->dirty_lock); ret = drm_fb_helper_init(cdev->dev, &gfbdev->helper, cdev->num_crtc, CIRRUSFB_CONN_LIMIT); diff --git a/drivers/gpu/drm/cirrus/cirrus_ttm.c b/drivers/gpu/drm/cirrus/cirrus_ttm.c index 1413a26..2ed8cfc 100644 --- a/drivers/gpu/drm/cirrus/cirrus_ttm.c +++ b/drivers/gpu/drm/cirrus/cirrus_ttm.c @@ -321,7 +321,7 @@ int cirrus_bo_reserve(struct cirrus_bo *bo, bool no_wait) ret = ttm_bo_reserve(&bo->bo, true, no_wait, false, 0); if (ret) { - if (ret != -ERESTARTSYS) + if (ret != -ERESTARTSYS && ret != -EBUSY) DRM_ERROR("reserve failed %p\n", bo); return ret; }