diff options
Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_kms.c')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_kms.c | 133 |
1 files changed, 132 insertions, 1 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c index 782766c00d70..06496a128162 100644 --- a/drivers/gpu/drm/virtio/virtgpu_kms.c +++ b/drivers/gpu/drm/virtio/virtgpu_kms.c @@ -52,6 +52,41 @@ 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) +{ + 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; +} + +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); +} + +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); +} + static void virtio_gpu_init_vq(struct virtio_gpu_queue *vgvq, void (*work_func)(struct work_struct *work)) { @@ -60,6 +95,36 @@ static void virtio_gpu_init_vq(struct virtio_gpu_queue *vgvq, INIT_WORK(&vgvq->dequeue_work, work_func); } +static void virtio_gpu_get_capsets(struct virtio_gpu_device *vgdev, + int num_capsets) +{ + int i, ret; + + vgdev->capsets = kcalloc(num_capsets, + sizeof(struct virtio_gpu_drv_capset), + GFP_KERNEL); + if (!vgdev->capsets) { + DRM_ERROR("failed to allocate cap sets\n"); + return; + } + for (i = 0; i < num_capsets; i++) { + virtio_gpu_cmd_get_capset_info(vgdev, i); + ret = wait_event_timeout(vgdev->resp_wq, + vgdev->capsets[i].id > 0, 5 * HZ); + if (ret == 0) { + DRM_ERROR("timed out waiting for cap set %d\n", i); + kfree(vgdev->capsets); + vgdev->capsets = NULL; + return; + } + DRM_INFO("cap set %d: id %d, max-version %d, max-size %d\n", + i, vgdev->capsets[i].id, + vgdev->capsets[i].max_version, + vgdev->capsets[i].max_size); + } + vgdev->num_capsets = num_capsets; +} + int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags) { static vq_callback_t *callbacks[] = { @@ -70,7 +135,7 @@ int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags) struct virtio_gpu_device *vgdev; /* this will expand later */ struct virtqueue *vqs[2]; - u32 num_scanouts; + u32 num_scanouts, num_capsets; int ret; if (!virtio_has_feature(dev->virtdev, VIRTIO_F_VERSION_1)) @@ -96,9 +161,15 @@ int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags) spin_lock_init(&vgdev->fence_drv.lock); INIT_LIST_HEAD(&vgdev->fence_drv.fences); + INIT_LIST_HEAD(&vgdev->cap_cache); INIT_WORK(&vgdev->config_changed_work, virtio_gpu_config_changed_work_func); + if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_VIRGL)) + vgdev->has_virgl_3d = true; + DRM_INFO("virgl 3d acceleration %s\n", + vgdev->has_virgl_3d ? "enabled" : "not available"); + ret = vgdev->vdev->config->find_vqs(vgdev->vdev, 2, vqs, callbacks, names); if (ret) { @@ -129,6 +200,11 @@ int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags) ret = -EINVAL; goto err_scanouts; } + DRM_INFO("number of scanouts: %d\n", num_scanouts); + + virtio_cread(vgdev->vdev, struct virtio_gpu_config, + num_capsets, &num_capsets); + DRM_INFO("number of cap sets: %d\n", num_capsets); ret = virtio_gpu_modeset_init(vgdev); if (ret) @@ -137,6 +213,8 @@ int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags) virtio_device_ready(vgdev->vdev); vgdev->vqs_ready = true; + if (num_capsets) + virtio_gpu_get_capsets(vgdev, num_capsets); virtio_gpu_cmd_get_display_info(vgdev); wait_event_timeout(vgdev->resp_wq, !vgdev->display_info_pending, 5 * HZ); @@ -157,6 +235,16 @@ err_vqs: return ret; } +static void virtio_gpu_cleanup_cap_cache(struct virtio_gpu_device *vgdev) +{ + struct virtio_gpu_drv_cap_cache *cache_ent, *tmp; + + list_for_each_entry_safe(cache_ent, tmp, &vgdev->cap_cache, head) { + kfree(cache_ent->caps_cache); + kfree(cache_ent); + } +} + int virtio_gpu_driver_unload(struct drm_device *dev) { struct virtio_gpu_device *vgdev = dev->dev_private; @@ -170,6 +258,49 @@ int virtio_gpu_driver_unload(struct drm_device *dev) virtio_gpu_modeset_fini(vgdev); virtio_gpu_ttm_fini(vgdev); virtio_gpu_free_vbufs(vgdev); + virtio_gpu_cleanup_cap_cache(vgdev); + kfree(vgdev->capsets); kfree(vgdev); return 0; } + +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; + char dbgname[64], tmpname[TASK_COMM_LEN]; + + /* can't create contexts without 3d renderer */ + if (!vgdev->has_virgl_3d) + return 0; + + get_task_comm(tmpname, current); + snprintf(dbgname, sizeof(dbgname), "%s", tmpname); + dbgname[63] = 0; + /* allocate a virt GPU context for this opener */ + vfpriv = kzalloc(sizeof(*vfpriv), GFP_KERNEL); + if (!vfpriv) + return -ENOMEM; + + virtio_gpu_context_create(vgdev, strlen(dbgname), dbgname, &id); + + vfpriv->ctx_id = id; + file->driver_priv = vfpriv; + return 0; +} + +void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file) +{ + struct virtio_gpu_device *vgdev = dev->dev_private; + struct virtio_gpu_fpriv *vfpriv; + + if (!vgdev->has_virgl_3d) + return; + + vfpriv = file->driver_priv; + + virtio_gpu_context_destroy(vgdev, vfpriv->ctx_id); + kfree(vfpriv); + file->driver_priv = NULL; +} |