Contributors: 23
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Dave Airlie |
738 |
44.48% |
7 |
14.89% |
| Gerd Hoffmann |
675 |
40.69% |
11 |
23.40% |
| Gurchetan Singh |
92 |
5.55% |
5 |
10.64% |
| Anthoine Bourgeois |
33 |
1.99% |
1 |
2.13% |
| David L Stevens |
22 |
1.33% |
1 |
2.13% |
| Danilo Krummrich |
21 |
1.27% |
1 |
2.13% |
| Matthew Wilcox |
17 |
1.02% |
2 |
4.26% |
| Xie Yongji |
12 |
0.72% |
2 |
4.26% |
| Gustavo Padovan |
10 |
0.60% |
1 |
2.13% |
| Dmitry Osipenko |
7 |
0.42% |
1 |
2.13% |
| Michael S. Tsirkin |
6 |
0.36% |
3 |
6.38% |
| Dan Carpenter |
5 |
0.30% |
1 |
2.13% |
| Laurent Vivier |
5 |
0.30% |
1 |
2.13% |
| Stephen Rothwell |
3 |
0.18% |
1 |
2.13% |
| Ezequiel García |
2 |
0.12% |
1 |
2.13% |
| Colin Ian King |
2 |
0.12% |
1 |
2.13% |
| Doug Horn |
2 |
0.12% |
1 |
2.13% |
| Christoph Hellwig |
2 |
0.12% |
1 |
2.13% |
| Chris Wilson |
1 |
0.06% |
1 |
2.13% |
| Sam Ravnborg |
1 |
0.06% |
1 |
2.13% |
| Stefan Hajnoczi |
1 |
0.06% |
1 |
2.13% |
| Gabriel Krisman Bertazi |
1 |
0.06% |
1 |
2.13% |
| Linus Torvalds |
1 |
0.06% |
1 |
2.13% |
| Total |
1659 |
|
47 |
|
/*
* Copyright (C) 2015 Red Hat, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <linux/virtio.h>
#include <linux/virtio_config.h>
#include <linux/virtio_ring.h>
#include <drm/drm_file.h>
#include <drm/drm_managed.h>
#include "virtgpu_drv.h"
static void virtio_gpu_config_changed_work_func(struct work_struct *work)
{
struct virtio_gpu_device *vgdev =
container_of(work, struct virtio_gpu_device,
config_changed_work);
u32 events_read, events_clear = 0;
/* read the config space */
virtio_cread_le(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);
virtio_gpu_notify(vgdev);
drm_helper_hpd_irq_event(vgdev->ddev);
events_clear |= VIRTIO_GPU_EVENT_DISPLAY;
}
virtio_cwrite_le(vgdev->vdev, struct virtio_gpu_config,
events_clear, &events_clear);
}
static void virtio_gpu_init_vq(struct virtio_gpu_queue *vgvq,
void (*work_func)(struct work_struct *work))
{
spin_lock_init(&vgvq->qlock);
init_waitqueue_head(&vgvq->ack_queue);
INIT_WORK(&vgvq->dequeue_work, work_func);
}
static void virtio_gpu_get_capsets(struct virtio_gpu_device *vgdev,
int num_capsets)
{
int i, ret;
bool invalid_capset_id = false;
struct drm_device *drm = vgdev->ddev;
vgdev->capsets = drmm_kcalloc(drm, 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);
virtio_gpu_notify(vgdev);
ret = wait_event_timeout(vgdev->resp_wq,
vgdev->capsets[i].id > 0, 5 * HZ);
/*
* Capability ids are defined in the virtio-gpu spec and are
* between 1 to 63, inclusive.
*/
if (!vgdev->capsets[i].id ||
vgdev->capsets[i].id > MAX_CAPSET_ID)
invalid_capset_id = true;
if (ret == 0)
DRM_ERROR("timed out waiting for cap set %d\n", i);
else if (invalid_capset_id)
DRM_ERROR("invalid capset id %u", vgdev->capsets[i].id);
if (ret == 0 || invalid_capset_id) {
spin_lock(&vgdev->display_info_lock);
drmm_kfree(drm, vgdev->capsets);
vgdev->capsets = NULL;
spin_unlock(&vgdev->display_info_lock);
return;
}
vgdev->capset_id_mask |= 1 << vgdev->capsets[i].id;
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_init(struct virtio_device *vdev, struct drm_device *dev)
{
static vq_callback_t *callbacks[] = {
virtio_gpu_ctrl_ack, virtio_gpu_cursor_ack
};
static const char * const names[] = { "control", "cursor" };
struct virtio_gpu_device *vgdev;
/* this will expand later */
struct virtqueue *vqs[2];
u32 num_scanouts, num_capsets;
int ret = 0;
if (!virtio_has_feature(vdev, VIRTIO_F_VERSION_1))
return -ENODEV;
vgdev = drmm_kzalloc(dev, sizeof(struct virtio_gpu_device), GFP_KERNEL);
if (!vgdev)
return -ENOMEM;
vgdev->ddev = dev;
dev->dev_private = vgdev;
vgdev->vdev = vdev;
spin_lock_init(&vgdev->display_info_lock);
spin_lock_init(&vgdev->resource_export_lock);
spin_lock_init(&vgdev->host_visible_lock);
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);
vgdev->fence_drv.context = dma_fence_context_alloc(1);
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);
INIT_WORK(&vgdev->obj_free_work,
virtio_gpu_array_put_free_work);
INIT_LIST_HEAD(&vgdev->obj_free_list);
spin_lock_init(&vgdev->obj_free_lock);
#ifdef __LITTLE_ENDIAN
if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_VIRGL))
vgdev->has_virgl_3d = true;
#endif
if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_EDID)) {
vgdev->has_edid = true;
}
if (virtio_has_feature(vgdev->vdev, VIRTIO_RING_F_INDIRECT_DESC)) {
vgdev->has_indirect = true;
}
if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_RESOURCE_UUID)) {
vgdev->has_resource_assign_uuid = true;
}
if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_RESOURCE_BLOB)) {
vgdev->has_resource_blob = true;
}
if (virtio_get_shm_region(vgdev->vdev, &vgdev->host_visible_region,
VIRTIO_GPU_SHM_ID_HOST_VISIBLE)) {
if (!devm_request_mem_region(&vgdev->vdev->dev,
vgdev->host_visible_region.addr,
vgdev->host_visible_region.len,
dev_name(&vgdev->vdev->dev))) {
DRM_ERROR("Could not reserve host visible region\n");
ret = -EBUSY;
goto err_vqs;
}
DRM_INFO("Host memory window: 0x%lx +0x%lx\n",
(unsigned long)vgdev->host_visible_region.addr,
(unsigned long)vgdev->host_visible_region.len);
vgdev->has_host_visible = true;
drm_mm_init(&vgdev->host_visible_mm,
(unsigned long)vgdev->host_visible_region.addr,
(unsigned long)vgdev->host_visible_region.len);
}
if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_CONTEXT_INIT)) {
vgdev->has_context_init = true;
}
DRM_INFO("features: %cvirgl %cedid %cresource_blob %chost_visible",
vgdev->has_virgl_3d ? '+' : '-',
vgdev->has_edid ? '+' : '-',
vgdev->has_resource_blob ? '+' : '-',
vgdev->has_host_visible ? '+' : '-');
DRM_INFO("features: %ccontext_init\n",
vgdev->has_context_init ? '+' : '-');
ret = virtio_find_vqs(vgdev->vdev, 2, vqs, callbacks, names, NULL);
if (ret) {
DRM_ERROR("failed to find virt queues\n");
goto err_vqs;
}
vgdev->ctrlq.vq = vqs[0];
vgdev->cursorq.vq = vqs[1];
ret = virtio_gpu_alloc_vbufs(vgdev);
if (ret) {
DRM_ERROR("failed to alloc vbufs\n");
goto err_vbufs;
}
/* get display info */
virtio_cread_le(vgdev->vdev, struct virtio_gpu_config,
num_scanouts, &num_scanouts);
vgdev->num_scanouts = min_t(uint32_t, num_scanouts,
VIRTIO_GPU_MAX_SCANOUTS);
if (!vgdev->num_scanouts) {
DRM_ERROR("num_scanouts is zero\n");
ret = -EINVAL;
goto err_scanouts;
}
DRM_INFO("number of scanouts: %d\n", num_scanouts);
virtio_cread_le(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) {
DRM_ERROR("modeset init failed\n");
goto err_scanouts;
}
virtio_device_ready(vgdev->vdev);
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);
virtio_gpu_notify(vgdev);
wait_event_timeout(vgdev->resp_wq, !vgdev->display_info_pending,
5 * HZ);
return 0;
err_scanouts:
virtio_gpu_free_vbufs(vgdev);
err_vbufs:
vgdev->vdev->config->del_vqs(vgdev->vdev);
err_vqs:
dev->dev_private = NULL;
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);
}
}
void virtio_gpu_deinit(struct drm_device *dev)
{
struct virtio_gpu_device *vgdev = dev->dev_private;
flush_work(&vgdev->obj_free_work);
flush_work(&vgdev->ctrlq.dequeue_work);
flush_work(&vgdev->cursorq.dequeue_work);
flush_work(&vgdev->config_changed_work);
virtio_reset_device(vgdev->vdev);
vgdev->vdev->config->del_vqs(vgdev->vdev);
}
void virtio_gpu_release(struct drm_device *dev)
{
struct virtio_gpu_device *vgdev = dev->dev_private;
if (!vgdev)
return;
virtio_gpu_modeset_fini(vgdev);
virtio_gpu_free_vbufs(vgdev);
virtio_gpu_cleanup_cap_cache(vgdev);
if (vgdev->has_host_visible)
drm_mm_takedown(&vgdev->host_visible_mm);
}
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;
int handle;
/* can't create contexts without 3d renderer */
if (!vgdev->has_virgl_3d)
return 0;
/* allocate a virt GPU context for this opener */
vfpriv = kzalloc(sizeof(*vfpriv), GFP_KERNEL);
if (!vfpriv)
return -ENOMEM;
mutex_init(&vfpriv->context_lock);
handle = ida_alloc(&vgdev->ctx_id_ida, GFP_KERNEL);
if (handle < 0) {
kfree(vfpriv);
return handle;
}
vfpriv->ctx_id = handle + 1;
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 = file->driver_priv;
if (!vgdev->has_virgl_3d)
return;
if (vfpriv->context_created) {
virtio_gpu_cmd_context_destroy(vgdev, vfpriv->ctx_id);
virtio_gpu_notify(vgdev);
}
ida_free(&vgdev->ctx_id_ida, vfpriv->ctx_id - 1);
mutex_destroy(&vfpriv->context_lock);
kfree(vfpriv);
file->driver_priv = NULL;
}