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Mon, 26 May 2025 02:01:57 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFODFO9ppwsV5E+FFuQuGGeBW483IYeVBee2OXT2Zb9+eI8FLSHDED6cuwUZJgQFPu/emkBcQ== X-Received: by 2002:a05:6a00:21c2:b0:73e:5aa:4f64 with SMTP id d2e1a72fcca58-745fde9f3b7mr12076460b3a.10.1748250116707; Mon, 26 May 2025 02:01:56 -0700 (PDT) Received: from zeus.elecom ([240b:10:83a2:bd00:6e35:f2f5:2e21:ae3a]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-742a9878b53sm16575092b3a.152.2025.05.26.02.01.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 May 2025 02:01:56 -0700 (PDT) From: Ryosuke Yasuoka To: drawat.floss@gmail.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, jfalempe@redhat.com Cc: Ryosuke Yasuoka , linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH RFC drm-misc-next v2 1/1] drm/hyperv: Add support for drm_panic Date: Mon, 26 May 2025 18:01:05 +0900 Message-ID: <20250526090117.80593-2-ryasuoka@redhat.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250526090117.80593-1-ryasuoka@redhat.com> References: <20250526090117.80593-1-ryasuoka@redhat.com> Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add drm_panic module for hyperv drm so that panic screen can be displayed on panic. Signed-off-by: Ryosuke Yasuoka --- drivers/gpu/drm/hyperv/hyperv_drm_modeset.c | 36 +++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c b/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c index f7d2e973f79e..945b9482bcb3 100644 --- a/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c +++ b/drivers/gpu/drm/hyperv/hyperv_drm_modeset.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include "hyperv_drm.h" @@ -181,10 +182,45 @@ static void hyperv_plane_atomic_update(struct drm_plane *plane, } } +static int hyperv_plane_get_scanout_buffer(struct drm_plane *plane, + struct drm_scanout_buffer *sb) +{ + struct hyperv_drm_device *hv = to_hv(plane->dev); + struct iosys_map map = IOSYS_MAP_INIT_VADDR_IOMEM(hv->vram); + + if (plane->state && plane->state->fb) { + sb->format = plane->state->fb->format; + sb->width = plane->state->fb->width; + sb->height = plane->state->fb->height; + sb->pitch[0] = plane->state->fb->pitches[0]; + sb->map[0] = map; + return 0; + } + return -ENODEV; +} + +static void hyperv_plane_panic_flush(struct drm_plane *plane) +{ + struct hyperv_drm_device *hv = to_hv(plane->dev); + struct drm_rect rect; + + if (!plane->state || !plane->state->fb) + return; + + rect.x1 = 0; + rect.y1 = 0; + rect.x2 = plane->state->fb->width; + rect.y2 = plane->state->fb->height; + + hyperv_update_dirt(hv->hdev, &rect); +} + static const struct drm_plane_helper_funcs hyperv_plane_helper_funcs = { DRM_GEM_SHADOW_PLANE_HELPER_FUNCS, .atomic_check = hyperv_plane_atomic_check, .atomic_update = hyperv_plane_atomic_update, + .get_scanout_buffer = hyperv_plane_get_scanout_buffer, + .panic_flush = hyperv_plane_panic_flush, }; static const struct drm_plane_funcs hyperv_plane_funcs = { -- 2.49.0