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path: root/drivers/gpu/drm/virtio/virtgpu_kms.c
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Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_kms.c')
-rw-r--r--drivers/gpu/drm/virtio/virtgpu_kms.c56
1 files changed, 25 insertions, 31 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 65060c08522d..3af6181c05a8 100644
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -44,6 +44,8 @@ static void virtio_gpu_config_changed_work_func(struct work_struct *work)
virtio_cread(vgdev->vdev, struct virtio_gpu_config,
events_read, &events_read);
if (events_read & VIRTIO_GPU_EVENT_DISPLAY) {
+ if (vgdev->has_edid)
+ virtio_gpu_cmd_get_edids(vgdev);
virtio_gpu_cmd_get_display_info(vgdev);
drm_helper_hpd_irq_event(vgdev->ddev);
events_clear |= VIRTIO_GPU_EVENT_DISPLAY;
@@ -52,39 +54,23 @@ static void virtio_gpu_config_changed_work_func(struct work_struct *work)
events_clear, &events_clear);
}
-static void virtio_gpu_ctx_id_get(struct virtio_gpu_device *vgdev,
- uint32_t *resid)
+static int virtio_gpu_context_create(struct virtio_gpu_device *vgdev,
+ uint32_t nlen, const char *name)
{
- int handle;
-
- idr_preload(GFP_KERNEL);
- spin_lock(&vgdev->ctx_id_idr_lock);
- handle = idr_alloc(&vgdev->ctx_id_idr, NULL, 1, 0, 0);
- spin_unlock(&vgdev->ctx_id_idr_lock);
- idr_preload_end();
- *resid = handle;
-}
+ int handle = ida_alloc(&vgdev->ctx_id_ida, GFP_KERNEL);
-static void virtio_gpu_ctx_id_put(struct virtio_gpu_device *vgdev, uint32_t id)
-{
- spin_lock(&vgdev->ctx_id_idr_lock);
- idr_remove(&vgdev->ctx_id_idr, id);
- spin_unlock(&vgdev->ctx_id_idr_lock);
-}
-
-static void virtio_gpu_context_create(struct virtio_gpu_device *vgdev,
- uint32_t nlen, const char *name,
- uint32_t *ctx_id)
-{
- virtio_gpu_ctx_id_get(vgdev, ctx_id);
- virtio_gpu_cmd_context_create(vgdev, *ctx_id, nlen, name);
+ if (handle < 0)
+ return handle;
+ handle += 1;
+ virtio_gpu_cmd_context_create(vgdev, handle, nlen, name);
+ return handle;
}
static void virtio_gpu_context_destroy(struct virtio_gpu_device *vgdev,
uint32_t ctx_id)
{
virtio_gpu_cmd_context_destroy(vgdev, ctx_id);
- virtio_gpu_ctx_id_put(vgdev, ctx_id);
+ ida_free(&vgdev->ctx_id_ida, ctx_id - 1);
}
static void virtio_gpu_init_vq(struct virtio_gpu_queue *vgvq,
@@ -151,10 +137,8 @@ int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags)
vgdev->dev = dev->dev;
spin_lock_init(&vgdev->display_info_lock);
- spin_lock_init(&vgdev->ctx_id_idr_lock);
- idr_init(&vgdev->ctx_id_idr);
- spin_lock_init(&vgdev->resource_idr_lock);
- idr_init(&vgdev->resource_idr);
+ ida_init(&vgdev->ctx_id_ida);
+ ida_init(&vgdev->resource_ida);
init_waitqueue_head(&vgdev->resp_wq);
virtio_gpu_init_vq(&vgdev->ctrlq, virtio_gpu_dequeue_ctrl_func);
virtio_gpu_init_vq(&vgdev->cursorq, virtio_gpu_dequeue_cursor_func);
@@ -174,6 +158,10 @@ int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags)
#else
DRM_INFO("virgl 3d acceleration not supported by guest\n");
#endif
+ if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_EDID)) {
+ vgdev->has_edid = true;
+ DRM_INFO("EDID support available.\n");
+ }
ret = virtio_find_vqs(vgdev->vdev, 2, vqs, callbacks, names, NULL);
if (ret) {
@@ -219,6 +207,8 @@ int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags)
if (num_capsets)
virtio_gpu_get_capsets(vgdev, num_capsets);
+ if (vgdev->has_edid)
+ virtio_gpu_cmd_get_edids(vgdev);
virtio_gpu_cmd_get_display_info(vgdev);
wait_event_timeout(vgdev->resp_wq, !vgdev->display_info_pending,
5 * HZ);
@@ -271,7 +261,7 @@ int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file)
{
struct virtio_gpu_device *vgdev = dev->dev_private;
struct virtio_gpu_fpriv *vfpriv;
- uint32_t id;
+ int id;
char dbgname[TASK_COMM_LEN];
/* can't create contexts without 3d renderer */
@@ -284,7 +274,11 @@ int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file)
return -ENOMEM;
get_task_comm(dbgname, current);
- virtio_gpu_context_create(vgdev, strlen(dbgname), dbgname, &id);
+ id = virtio_gpu_context_create(vgdev, strlen(dbgname), dbgname);
+ if (id < 0) {
+ kfree(vfpriv);
+ return id;
+ }
vfpriv->ctx_id = id;
file->driver_priv = vfpriv;