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drm/virtio: Add drm_panic support

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Virtio gpu supports the drm_panic module, which displays a message to
the screen when a kernel panic occurs. It is supported where it has
vmapped shmem BO.

Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Signed-off-by: Ryosuke Yasuoka <ryasuoka@redhat.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250206104300.416014-1-ryasuoka@redhat.com
This commit is contained in:
Ryosuke Yasuoka
2025-02-06 19:42:59 +09:00
committed by Dmitry Osipenko
parent 05345cea4f
commit 6f3d9d0dd3
4 changed files with 272 additions and 0 deletions
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11
drivers/gpu/drm/virtio/virtgpu_drv.h
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@@ -310,6 +310,7 @@ int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args);
struct virtio_gpu_object_array *virtio_gpu_panic_array_alloc(void);
struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents);
struct virtio_gpu_object_array*
virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents);
@@ -334,12 +335,21 @@ void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
struct virtio_gpu_fence *fence);
void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
struct virtio_gpu_object *bo);
int virtio_gpu_panic_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
uint64_t offset,
uint32_t width, uint32_t height,
uint32_t x, uint32_t y,
struct virtio_gpu_object_array *objs);
void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
uint64_t offset,
uint32_t width, uint32_t height,
uint32_t x, uint32_t y,
struct virtio_gpu_object_array *objs,
struct virtio_gpu_fence *fence);
void virtio_gpu_panic_cmd_resource_flush(struct virtio_gpu_device *vgdev,
uint32_t resource_id,
uint32_t x, uint32_t y,
uint32_t width, uint32_t height);
void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
uint32_t resource_id,
uint32_t x, uint32_t y,
@@ -408,6 +418,7 @@ void virtio_gpu_ctrl_ack(struct virtqueue *vq);
void virtio_gpu_cursor_ack(struct virtqueue *vq);
void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
void virtio_gpu_panic_notify(struct virtio_gpu_device *vgdev);
void virtio_gpu_notify(struct virtio_gpu_device *vgdev);
int