[PATCH v3 4/7] virtio-gpu: add 3d/virgl support

Gerd Hoffmann
2015-10-02T11:59:49Z

Add the bits needed for opengl rendering support: query
capabilities, new virtio commands, drm ioctls.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
drivers/gpu/drm/virtio/Makefile | 3 +-
drivers/gpu/drm/virtio/virtgpu_drv.c | 15 +
drivers/gpu/drm/virtio/virtgpu_drv.h | 60 ++++
drivers/gpu/drm/virtio/virtgpu_gem.c | 41 +++
drivers/gpu/drm/virtio/virtgpu_ioctl.c | 572 +++++++++++++++++++++++++++++++++
drivers/gpu/drm/virtio/virtgpu_kms.c | 133 +++++++-
drivers/gpu/drm/virtio/virtgpu_ttm.c | 1 +
drivers/gpu/drm/virtio/virtgpu_vq.c | 265 +++++++++++++++
include/uapi/drm/Kbuild | 1 +
include/uapi/drm/virtgpu_drm.h | 167 ++++++++++
include/uapi/linux/virtio_gpu.h | 112 ++++++-
11 files changed, 1367 insertions(+), 3 deletions(-)
create mode 100644 drivers/gpu/drm/virtio/virtgpu_ioctl.c
create mode 100644 include/uapi/drm/virtgpu_drm.h

diff --git a/drivers/gpu/drm/virtio/Makefile b/drivers/gpu/drm/virtio/Makefile
index 2ee1602..da7bf19 100644
--- a/drivers/gpu/drm/virtio/Makefile
+++ b/drivers/gpu/drm/virtio/Makefile
@@ -6,6 +6,7 @@ ccflags-y := -Iinclude/drm

virtio-gpu-y := virtgpu_drv.o virtgpu_kms.o virtgpu_drm_bus.o virtgpu_gem.o \
virtgpu_fb.o virtgpu_display.o virtgpu_vq.o virtgpu_ttm.o \
- virtgpu_fence.o virtgpu_object.o virtgpu_debugfs.o virtgpu_plane.o
+ virtgpu_fence.o virtgpu_object.o virtgpu_debugfs.o virtgpu_plane.o \
+ virtgpu_ioctl.o

obj-$(CONFIG_DRM_VIRTIO_GPU) += virtio-gpu.o
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c
index 7d9610a..c27d3a3 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.c
@@ -73,6 +73,14 @@ static struct virtio_device_id id_table[] = {
};

static unsigned int features[] = {
+#ifdef __LITTLE_ENDIAN
+ /*
+ * Gallium command stream send by virgl is native endian.
+ * Because of that we only support little endian guests on
+ * little endian hosts.
+ */
+ VIRTIO_GPU_F_VIRGL,
+#endif
};
static struct virtio_driver virtio_gpu_driver = {
.feature_table = features,
@@ -114,6 +122,8 @@ static struct drm_driver driver = {
.set_busid = drm_virtio_set_busid,
.load = virtio_gpu_driver_load,
.unload = virtio_gpu_driver_unload,
+ .open = virtio_gpu_driver_open,
+ .postclose = virtio_gpu_driver_postclose,

.dumb_create = virtio_gpu_mode_dumb_create,
.dumb_map_offset = virtio_gpu_mode_dumb_mmap,
@@ -125,8 +135,13 @@ static struct drm_driver driver = {
#endif

.gem_free_object = virtio_gpu_gem_free_object,
+ .gem_open_object = virtio_gpu_gem_object_open,
+ .gem_close_object = virtio_gpu_gem_object_close,
.fops = &virtio_gpu_driver_fops,

+ .ioctls = virtio_gpu_ioctls,
+ .num_ioctls = DRM_VIRTIO_NUM_IOCTLS,
+
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 6d4db2d..2719108 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -146,6 +146,21 @@ struct virtio_gpu_queue {
struct work_struct dequeue_work;
};

+struct virtio_gpu_drv_capset {
+ uint32_t id;
+ uint32_t max_version;
+ uint32_t max_size;
+};
+
+struct virtio_gpu_drv_cap_cache {
+ struct list_head head;
+ void *caps_cache;
+ uint32_t id;
+ uint32_t version;
+ uint32_t size;
+ atomic_t is_valid;
+};
+
struct virtio_gpu_device {
struct device *dev;
struct drm_device *ddev;
@@ -179,7 +194,13 @@ struct virtio_gpu_device {
struct idr ctx_id_idr;
spinlock_t ctx_id_idr_lock;

+ bool has_virgl_3d;
+
struct work_struct config_changed_work;
+
+ struct virtio_gpu_drv_capset *capsets;
+ uint32_t num_capsets;
+ struct list_head cap_cache;
};

struct virtio_gpu_fpriv {
@@ -193,6 +214,8 @@ extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
/* virtio_kms.c */
int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags);
int virtio_gpu_driver_unload(struct drm_device *dev);
+int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
+void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);

/* virtio_gem.c */
void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj);
@@ -203,6 +226,10 @@ int virtio_gpu_gem_create(struct drm_file *file,
uint64_t size,
struct drm_gem_object **obj_p,
uint32_t *handle_p);
+int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
+ struct drm_file *file);
+void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
+ struct drm_file *file);
struct virtio_gpu_object *virtio_gpu_alloc_object(struct drm_device *dev,
size_t size, bool kernel,
bool pinned);
@@ -260,10 +287,43 @@ void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev);
void virtio_gpu_cmd_resource_inval_backing(struct virtio_gpu_device *vgdev,
uint32_t resource_id);
+int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx);
+int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
+ int idx, int version,
+ struct virtio_gpu_drv_cap_cache **cache_p);
+void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
+ uint32_t nlen, const char *name);
+void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
+ uint32_t id);
+void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
+ uint32_t ctx_id,
+ uint32_t resource_id);
+void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
+ uint32_t ctx_id,
+ uint32_t resource_id);
+void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
+ void *data, uint32_t data_size,
+ uint32_t ctx_id, struct virtio_gpu_fence **fence);
+void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
+ uint32_t resource_id, uint32_t ctx_id,
+ uint64_t offset, uint32_t level,
+ struct virtio_gpu_box *box,
+ struct virtio_gpu_fence **fence);
+void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
+ uint32_t resource_id, uint32_t ctx_id,
+ uint64_t offset, uint32_t level,
+ struct virtio_gpu_box *box,
+ struct virtio_gpu_fence **fence);
+void
+virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
+ struct virtio_gpu_resource_create_3d *rc_3d,
+ struct virtio_gpu_fence **fence);
void virtio_gpu_ctrl_ack(struct virtqueue *vq);
void virtio_gpu_cursor_ack(struct virtqueue *vq);
+void virtio_gpu_fence_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_dequeue_fence_func(struct work_struct *work);

/* virtio_gpu_display.c */
int virtio_gpu_framebuffer_init(struct drm_device *dev,
diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c
index cfa0d27..1feb7ce 100644
--- a/drivers/gpu/drm/virtio/virtgpu_gem.c
+++ b/drivers/gpu/drm/virtio/virtgpu_gem.c
@@ -138,3 +138,44 @@ int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
drm_gem_object_unreference_unlocked(gobj);
return 0;
}
+
+int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
+ struct drm_file *file)
+{
+ struct virtio_gpu_device *vgdev = obj->dev->dev_private;
+ struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
+ struct virtio_gpu_object *qobj = gem_to_virtio_gpu_obj(obj);
+ int r;
+
+ if (!vgdev->has_virgl_3d)
+ return 0;
+
+ r = virtio_gpu_object_reserve(qobj, false);
+ if (r)
+ return r;
+
+ virtio_gpu_cmd_context_attach_resource(vgdev, vfpriv->ctx_id,
+ qobj->hw_res_handle);
+ virtio_gpu_object_unreserve(qobj);
+ return 0;
+}
+
+void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
+ struct drm_file *file)
+{
+ struct virtio_gpu_device *vgdev = obj->dev->dev_private;
+ struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
+ struct virtio_gpu_object *qobj = gem_to_virtio_gpu_obj(obj);
+ int r;
+
+ if (!vgdev->has_virgl_3d)
+ return;
+
+ r = virtio_gpu_object_reserve(qobj, false);
+ if (r)
+ return;
+
+ virtio_gpu_cmd_context_detach_resource(vgdev, vfpriv->ctx_id,
+ qobj->hw_res_handle);
+ virtio_gpu_object_unreserve(qobj);
+}
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
new file mode 100644
index 0000000..d5c9e02
--- /dev/null
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -0,0 +1,572 @@
+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ * All Rights Reserved.
+ *
+ * Authors:
+ * Dave Airlie
+ * Alon Levy
+ *
+ * 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 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 HOLDER(S) OR AUTHOR(S) 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 <drm/drmP.h>
+#include "virtgpu_drv.h"
+#include <drm/virtgpu_drm.h>
+#include "ttm/ttm_execbuf_util.h"
+
+static void convert_to_hw_box(struct virtio_gpu_box *dst,
+ const struct drm_virtgpu_3d_box *src)
+{
+ dst->x = cpu_to_le32(src->x);
+ dst->y = cpu_to_le32(src->y);
+ dst->z = cpu_to_le32(src->z);
+ dst->w = cpu_to_le32(src->w);
+ dst->h = cpu_to_le32(src->h);
+ dst->d = cpu_to_le32(src->d);
+}
+
+static int virtio_gpu_map_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct virtio_gpu_device *vgdev = dev->dev_private;
+ struct drm_virtgpu_map *virtio_gpu_map = data;
+
+ return virtio_gpu_mode_dumb_mmap(file_priv, vgdev->ddev,
+ virtio_gpu_map->handle,
+ &virtio_gpu_map->offset);
+}
+
+static int virtio_gpu_object_list_validate(struct ww_acquire_ctx *ticket,
+ struct list_head *head)
+{
+ struct ttm_validate_buffer *buf;
+ struct ttm_buffer_object *bo;
+ struct virtio_gpu_object *qobj;
+ int ret;
+
+ ret = ttm_eu_reserve_buffers(ticket, head, true, NULL);
+ if (ret != 0)
+ return ret;
+
+ list_for_each_entry(buf, head, head) {
+ bo = buf->bo;
+ qobj = container_of(bo, struct virtio_gpu_object, tbo);
+ ret = ttm_bo_validate(bo, &qobj->placement, false, false);
+ if (ret) {
+ ttm_eu_backoff_reservation(ticket, head);
+ return ret;
+ }
+ }
+ return 0;
+}
+
+static void virtio_gpu_unref_list(struct list_head *head)
+{
+ struct ttm_validate_buffer *buf;
+ struct ttm_buffer_object *bo;
+ struct virtio_gpu_object *qobj;
+ list_for_each_entry(buf, head, head) {
+ bo = buf->bo;
+ qobj = container_of(bo, struct virtio_gpu_object, tbo);
+
+ drm_gem_object_unreference_unlocked(&qobj->gem_base);
+ }
+}
+
+static int virtio_gpu_execbuffer(struct drm_device *dev,
+ struct drm_virtgpu_execbuffer *exbuf,
+ struct drm_file *drm_file)
+{
+ struct virtio_gpu_device *vgdev = dev->dev_private;
+ struct virtio_gpu_fpriv *vfpriv = drm_file->driver_priv;
+ struct drm_gem_object *gobj;
+ struct virtio_gpu_fence *fence;
+ struct virtio_gpu_object *qobj;
+ int ret;
+ uint32_t *bo_handles = NULL;
+ void __user *user_bo_handles = NULL;
+ struct list_head validate_list;
+ struct ttm_validate_buffer *buflist = NULL;
+ struct ttm_validate_buffer cmdbuffer;
+ int i;
+ struct ww_acquire_ctx ticket;
+ void *buf;
+
+ if (vgdev->has_virgl_3d == false)
+ return -ENOSYS;
+
+ memset(&cmdbuffer, 0, sizeof(struct ttm_validate_buffer));
+ INIT_LIST_HEAD(&validate_list);
+ if (exbuf->num_bo_handles) {
+
+ bo_handles = drm_malloc_ab(exbuf->num_bo_handles,
+ sizeof(uint32_t));
+ buflist = drm_calloc_large(exbuf->num_bo_handles,
+ sizeof(struct ttm_validate_buffer));
+ if (!bo_handles || !buflist) {
+ drm_free_large(bo_handles);
+ drm_free_large(buflist);
+ return -ENOMEM;
+ }
+
+ user_bo_handles = (void __user *)(uintptr_t)exbuf->bo_handles;
+ if (copy_from_user(bo_handles, user_bo_handles,
+ exbuf->num_bo_handles * sizeof(uint32_t))) {
+ ret = -EFAULT;
+ drm_free_large(bo_handles);
+ return ret;
+ }
+
+ for (i = 0; i < exbuf->num_bo_handles; i++) {
+ gobj = drm_gem_object_lookup(dev,
+ drm_file, bo_handles[i]);
+ if (!gobj) {
+ drm_free_large(bo_handles);
+ drm_free_large(buflist);
+ return -ENOENT;
+ }
+
+ qobj = gem_to_virtio_gpu_obj(gobj);
+ buflist[i].bo = &qobj->tbo;
+
+ list_add(&buflist[i].head, &validate_list);
+ }
+ drm_free_large(bo_handles);
+ }
+
+ ret = virtio_gpu_object_list_validate(&ticket, &validate_list);
+ if (ret)
+ goto out_free;
+
+ buf = kmalloc(exbuf->size, GFP_KERNEL);
+ if (!buf) {
+ ret = -ENOMEM;
+ goto out_unresv;
+ }
+ if (copy_from_user(buf, (void __user *)(uintptr_t)exbuf->command,
+ exbuf->size)) {
+ kfree(buf);
+ ret = -EFAULT;
+ goto out_unresv;
+ }
+ virtio_gpu_cmd_submit(vgdev, buf, exbuf->size,
+ vfpriv->ctx_id, &fence);
+
+ ttm_eu_fence_buffer_objects(&ticket, &validate_list, &fence->f);
+
+ /* fence the command bo */
+ virtio_gpu_unref_list(&validate_list);
+ drm_free_large(buflist);
+ fence_put(&fence->f);
+ return 0;
+
+out_unresv:
+ ttm_eu_backoff_reservation(&ticket, &validate_list);
+out_free:
+ virtio_gpu_unref_list(&validate_list);
+ drm_free_large(buflist);
+ return ret;
+}
+
+/*
+ * Usage of execbuffer:
+ * Relocations need to take into account the full VIRTIO_GPUDrawable size.
+ * However, the command as passed from user space must *not* contain the initial
+ * VIRTIO_GPUReleaseInfo struct (first XXX bytes)
+ */
+static int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_virtgpu_execbuffer *execbuffer = data;
+ return virtio_gpu_execbuffer(dev, execbuffer, file_priv);
+}
+
+
+static int virtio_gpu_getparam_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct virtio_gpu_device *vgdev = dev->dev_private;
+ struct drm_virtgpu_getparam *param = data;
+ int value;
+
+ switch (param->param) {
+ case VIRTGPU_PARAM_3D_FEATURES:
+ value = vgdev->has_virgl_3d == true ? 1 : 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ if (copy_to_user((void __user *)(unsigned long)param->value,
+ &value, sizeof(int))) {
+ return -EFAULT;
+ }
+ return 0;
+}
+
+static int virtio_gpu_resource_create_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct virtio_gpu_device *vgdev = dev->dev_private;
+ struct drm_virtgpu_resource_create *rc = data;
+ int ret;
+ uint32_t res_id;
+ struct virtio_gpu_object *qobj;
+ struct drm_gem_object *obj;
+ uint32_t handle = 0;
+ uint32_t size;
+ struct list_head validate_list;
+ struct ttm_validate_buffer mainbuf;
+ struct virtio_gpu_fence *fence = NULL;
+ struct ww_acquire_ctx ticket;
+ struct virtio_gpu_resource_create_3d rc_3d;
+
+ if (vgdev->has_virgl_3d == false) {
+ if (rc->depth > 1)
+ return -EINVAL;
+ if (rc->nr_samples > 1)
+ return -EINVAL;
+ if (rc->last_level > 1)
+ return -EINVAL;
+ if (rc->target != 2)
+ return -EINVAL;
+ if (rc->array_size > 1)
+ return -EINVAL;
+ }
+
+ INIT_LIST_HEAD(&validate_list);
+ memset(&mainbuf, 0, sizeof(struct ttm_validate_buffer));
+
+ virtio_gpu_resource_id_get(vgdev, &res_id);
+
+ size = rc->size;
+
+ /* allocate a single page size object */
+ if (size == 0)
+ size = PAGE_SIZE;
+
+ qobj = virtio_gpu_alloc_object(dev, size, false, false);
+ if (IS_ERR(qobj)) {
+ ret = PTR_ERR(qobj);
+ goto fail_id;
+ }
+ obj = &qobj->gem_base;
+
+ if (!vgdev->has_virgl_3d) {
+ virtio_gpu_cmd_create_resource(vgdev, res_id, rc->format,
+ rc->width, rc->height);
+
+ ret = virtio_gpu_object_attach(vgdev, qobj, res_id, NULL);
+ } else {
+ /* use a gem reference since unref list undoes them */
+ drm_gem_object_reference(&qobj->gem_base);
+ mainbuf.bo = &qobj->tbo;
+ list_add(&mainbuf.head, &validate_list);
+
+ ret = virtio_gpu_object_list_validate(&ticket, &validate_list);
+ if (ret) {
+ DRM_DEBUG("failed to validate\n");
+ goto fail_unref;
+ }
+
+ rc_3d.resource_id = cpu_to_le32(res_id);
+ rc_3d.target = cpu_to_le32(rc->target);
+ rc_3d.format = cpu_to_le32(rc->format);
+ rc_3d.bind = cpu_to_le32(rc->bind);
+ rc_3d.width = cpu_to_le32(rc->width);
+ rc_3d.height = cpu_to_le32(rc->height);
+ rc_3d.depth = cpu_to_le32(rc->depth);
+ rc_3d.array_size = cpu_to_le32(rc->array_size);
+ rc_3d.last_level = cpu_to_le32(rc->last_level);
+ rc_3d.nr_samples = cpu_to_le32(rc->nr_samples);
+ rc_3d.flags = cpu_to_le32(rc->flags);
+
+ virtio_gpu_cmd_resource_create_3d(vgdev, &rc_3d, NULL);
+ ret = virtio_gpu_object_attach(vgdev, qobj, res_id, &fence);
+ if (ret)
+ goto fail_unref;
+ ttm_eu_fence_buffer_objects(&ticket, &validate_list, &fence->f);
+ }
+
+ qobj->hw_res_handle = res_id;
+
+ ret = drm_gem_handle_create(file_priv, obj, &handle);
+ if (ret) {
+
+ drm_gem_object_release(obj);
+ if (vgdev->has_virgl_3d) {
+ virtio_gpu_unref_list(&validate_list);
+ fence_put(&fence->f);
+ }
+ return ret;
+ }
+ drm_gem_object_unreference_unlocked(obj);
+
+ rc->res_handle = res_id; /* similiar to a VM address */
+ rc->bo_handle = handle;
+
+ if (vgdev->has_virgl_3d) {
+ virtio_gpu_unref_list(&validate_list);
+ fence_put(&fence->f);
+ }
+ return 0;
+fail_unref:
+ if (vgdev->has_virgl_3d) {
+ virtio_gpu_unref_list(&validate_list);
+ fence_put(&fence->f);
+ }
+//fail_obj:
+// drm_gem_object_handle_unreference_unlocked(obj);
+fail_id:
+ virtio_gpu_resource_id_put(vgdev, res_id);
+ return ret;
+}
+
+static int virtio_gpu_resource_info_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_virtgpu_resource_info *ri = data;
+ struct drm_gem_object *gobj = NULL;
+ struct virtio_gpu_object *qobj = NULL;
+
+ gobj = drm_gem_object_lookup(dev, file_priv, ri->bo_handle);
+ if (gobj == NULL)
+ return -ENOENT;
+
+ qobj = gem_to_virtio_gpu_obj(gobj);
+
+ ri->size = qobj->gem_base.size;
+ ri->res_handle = qobj->hw_res_handle;
+ drm_gem_object_unreference_unlocked(gobj);
+ return 0;
+}
+
+static int virtio_gpu_transfer_from_host_ioctl(struct drm_device *dev,
+ void *data,
+ struct drm_file *file)
+{
+ struct virtio_gpu_device *vgdev = dev->dev_private;
+ struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
+ struct drm_virtgpu_3d_transfer_from_host *args = data;
+ struct drm_gem_object *gobj = NULL;
+ struct virtio_gpu_object *qobj = NULL;
+ struct virtio_gpu_fence *fence;
+ int ret;
+ u32 offset = args->offset;
+ struct virtio_gpu_box box;
+
+ if (vgdev->has_virgl_3d == false)
+ return -ENOSYS;
+
+ gobj = drm_gem_object_lookup(dev, file, args->bo_handle);
+ if (gobj == NULL)
+ return -ENOENT;
+
+ qobj = gem_to_virtio_gpu_obj(gobj);
+
+ ret = virtio_gpu_object_reserve(qobj, false);
+ if (ret)
+ goto out;
+
+ ret = ttm_bo_validate(&qobj->tbo, &qobj->placement,
+ true, false);
+ if (unlikely(ret))
+ goto out_unres;
+
+ convert_to_hw_box(&box, &args->box);
+ virtio_gpu_cmd_transfer_from_host_3d
+ (vgdev, qobj->hw_res_handle,
+ vfpriv->ctx_id, offset, args->level,
+ &box, &fence);
+ reservation_object_add_excl_fence(qobj->tbo.resv,
+ &fence->f);
+
+ fence_put(&fence->f);
+out_unres:
+ virtio_gpu_object_unreserve(qobj);
+out:
+ drm_gem_object_unreference_unlocked(gobj);
+ return ret;
+}
+
+static int virtio_gpu_transfer_to_host_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct virtio_gpu_device *vgdev = dev->dev_private;
+ struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
+ struct drm_virtgpu_3d_transfer_to_host *args = data;
+ struct drm_gem_object *gobj = NULL;
+ struct virtio_gpu_object *qobj = NULL;
+ struct virtio_gpu_fence *fence;
+ struct virtio_gpu_box box;
+ int ret;
+ u32 offset = args->offset;
+
+ gobj = drm_gem_object_lookup(dev, file, args->bo_handle);
+ if (gobj == NULL)
+ return -ENOENT;
+
+ qobj = gem_to_virtio_gpu_obj(gobj);
+
+ ret = virtio_gpu_object_reserve(qobj, false);
+ if (ret)
+ goto out;
+
+ ret = ttm_bo_validate(&qobj->tbo, &qobj->placement,
+ true, false);
+ if (unlikely(ret))
+ goto out_unres;
+
+ convert_to_hw_box(&box, &args->box);
+ if (!vgdev->has_virgl_3d) {
+ virtio_gpu_cmd_transfer_to_host_2d
+ (vgdev, qobj->hw_res_handle, offset,
+ box.w, box.h, box.x, box.y, NULL);
+ } else {
+ virtio_gpu_cmd_transfer_to_host_3d
+ (vgdev, qobj->hw_res_handle,
+ vfpriv ? vfpriv->ctx_id : 0, offset,
+ args->level, &box, &fence);
+ reservation_object_add_excl_fence(qobj->tbo.resv,
+ &fence->f);
+ fence_put(&fence->f);
+ }
+
+out_unres:
+ virtio_gpu_object_unreserve(qobj);
+out:
+ drm_gem_object_unreference_unlocked(gobj);
+ return ret;
+}
+
+static int virtio_gpu_wait_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_virtgpu_3d_wait *args = data;
+ struct drm_gem_object *gobj = NULL;
+ struct virtio_gpu_object *qobj = NULL;
+ int ret;
+ bool nowait = false;
+
+ gobj = drm_gem_object_lookup(dev, file, args->handle);
+ if (gobj == NULL)
+ return -ENOENT;
+
+ qobj = gem_to_virtio_gpu_obj(gobj);
+
+ if (args->flags & VIRTGPU_WAIT_NOWAIT)
+ nowait = true;
+ ret = virtio_gpu_object_wait(qobj, nowait);
+
+ drm_gem_object_unreference_unlocked(gobj);
+ return ret;
+}
+
+static int virtio_gpu_get_caps_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file)
+{
+ struct virtio_gpu_device *vgdev = dev->dev_private;
+ struct drm_virtgpu_get_caps *args = data;
+ int size;
+ int i;
+ int found_valid = -1;
+ int ret;
+ struct virtio_gpu_drv_cap_cache *cache_ent;
+ void *ptr;
+ if (vgdev->num_capsets == 0)
+ return -ENOSYS;
+
+ spin_lock(&vgdev->display_info_lock);
+ for (i = 0; i < vgdev->num_capsets; i++) {
+ if (vgdev->capsets[i].id == args->cap_set_id) {
+ if (vgdev->capsets[i].max_version >= args->cap_set_ver) {
+ found_valid = i;
+ break;
+ }
+ }
+ }
+
+ if (found_valid == -1) {
+ spin_unlock(&vgdev->display_info_lock);
+ return -EINVAL;
+ }
+
+ size = vgdev->capsets[found_valid].max_size;
+ if (args->size > size) {
+ spin_unlock(&vgdev->display_info_lock);
+ return -EINVAL;
+ }
+
+ list_for_each_entry(cache_ent, &vgdev->cap_cache, head) {
+ if (cache_ent->id == args->cap_set_id &&
+ cache_ent->version == args->cap_set_ver) {
+ ptr = cache_ent->caps_cache;
+ spin_unlock(&vgdev->display_info_lock);
+ goto copy_exit;
+ }
+ }
+ spin_unlock(&vgdev->display_info_lock);
+
+ /* not in cache - need to talk to hw */
+ virtio_gpu_cmd_get_capset(vgdev, found_valid, args->cap_set_ver,
+ &cache_ent);
+
+ ret = wait_event_timeout(vgdev->resp_wq,
+ atomic_read(&cache_ent->is_valid), 5 * HZ);
+
+ ptr = cache_ent->caps_cache;
+
+copy_exit:
+ if (copy_to_user((void __user *)(unsigned long)args->addr, ptr, size))
+ return -EFAULT;
+
+ return 0;
+}
+
+struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS] = {
+ DRM_IOCTL_DEF_DRV(VIRTGPU_MAP, virtio_gpu_map_ioctl,
+ DRM_AUTH|DRM_UNLOCKED),
+
+ DRM_IOCTL_DEF_DRV(VIRTGPU_EXECBUFFER, virtio_gpu_execbuffer_ioctl,
+ DRM_AUTH|DRM_UNLOCKED),
+
+ DRM_IOCTL_DEF_DRV(VIRTGPU_GETPARAM, virtio_gpu_getparam_ioctl,
+ DRM_AUTH|DRM_UNLOCKED),
+
+ DRM_IOCTL_DEF_DRV(VIRTGPU_RESOURCE_CREATE,
+ virtio_gpu_resource_create_ioctl,
+ DRM_AUTH|DRM_UNLOCKED),
+
+ DRM_IOCTL_DEF_DRV(VIRTGPU_RESOURCE_INFO, virtio_gpu_resource_info_ioctl,
+ DRM_AUTH|DRM_UNLOCKED),
+
+ /* make transfer async to the main ring? - no sure, can we
+ thread these in the underlying GL */
+ DRM_IOCTL_DEF_DRV(VIRTGPU_TRANSFER_FROM_HOST,
+ virtio_gpu_transfer_from_host_ioctl,
+ DRM_AUTH|DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(VIRTGPU_TRANSFER_TO_HOST,
+ virtio_gpu_transfer_to_host_ioctl,
+ DRM_AUTH|DRM_UNLOCKED),
+
+ DRM_IOCTL_DEF_DRV(VIRTGPU_WAIT, virtio_gpu_wait_ioctl,
+ DRM_AUTH|DRM_UNLOCKED),
+
+ DRM_IOCTL_DEF_DRV(VIRTGPU_GET_CAPS, virtio_gpu_get_caps_ioctl,
+ DRM_AUTH|DRM_UNLOCKED),
+};
diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 782766c..06496a1 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;
+}
diff --git a/drivers/gpu/drm/virtio/virtgpu_ttm.c b/drivers/gpu/drm/virtio/virtgpu_ttm.c
index b092d7b..9fd924c 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ttm.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ttm.c
@@ -32,6 +32,7 @@
#include <ttm/ttm_module.h>
#include <drm/drmP.h>
#include <drm/drm.h>
+#include <drm/virtgpu_drm.h>
#include "virtgpu_drv.h"

#include <linux/delay.h>
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index ee25e9a..5a0f8a7 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -586,6 +586,47 @@ static void virtio_gpu_cmd_get_display_info_cb(struct virtio_gpu_device *vgdev,
drm_kms_helper_hotplug_event(vgdev->ddev);
}

+static void virtio_gpu_cmd_get_capset_info_cb(struct virtio_gpu_device *vgdev,
+ struct virtio_gpu_vbuffer *vbuf)
+{
+ struct virtio_gpu_get_capset_info *cmd =
+ (struct virtio_gpu_get_capset_info *)vbuf->buf;
+ struct virtio_gpu_resp_capset_info *resp =
+ (struct virtio_gpu_resp_capset_info *)vbuf->resp_buf;
+ int i = le32_to_cpu(cmd->capset_index);
+
+ spin_lock(&vgdev->display_info_lock);
+ vgdev->capsets[i].id = le32_to_cpu(resp->capset_id);
+ vgdev->capsets[i].max_version = le32_to_cpu(resp->capset_max_version);
+ vgdev->capsets[i].max_size = le32_to_cpu(resp->capset_max_size);
+ spin_unlock(&vgdev->display_info_lock);
+ wake_up(&vgdev->resp_wq);
+}
+
+static void virtio_gpu_cmd_capset_cb(struct virtio_gpu_device *vgdev,
+ struct virtio_gpu_vbuffer *vbuf)
+{
+ struct virtio_gpu_get_capset *cmd =
+ (struct virtio_gpu_get_capset *)vbuf->buf;
+ struct virtio_gpu_resp_capset *resp =
+ (struct virtio_gpu_resp_capset *)vbuf->resp_buf;
+ struct virtio_gpu_drv_cap_cache *cache_ent;
+
+ spin_lock(&vgdev->display_info_lock);
+ list_for_each_entry(cache_ent, &vgdev->cap_cache, head) {
+ if (cache_ent->version == le32_to_cpu(cmd->capset_version) &&
+ cache_ent->id == le32_to_cpu(cmd->capset_id)) {
+ memcpy(cache_ent->caps_cache, resp->capset_data,
+ cache_ent->size);
+ atomic_set(&cache_ent->is_valid, 1);
+ break;
+ }
+ }
+ spin_unlock(&vgdev->display_info_lock);
+ wake_up(&vgdev->resp_wq);
+}
+
+
int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev)
{
struct virtio_gpu_ctrl_hdr *cmd_p;
@@ -609,6 +650,230 @@ int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev)
return 0;
}

+int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx)
+{
+ struct virtio_gpu_get_capset_info *cmd_p;
+ struct virtio_gpu_vbuffer *vbuf;
+ void *resp_buf;
+
+ resp_buf = kzalloc(sizeof(struct virtio_gpu_resp_capset_info),
+ GFP_KERNEL);
+ if (!resp_buf)
+ return -ENOMEM;
+
+ cmd_p = virtio_gpu_alloc_cmd_resp
+ (vgdev, &virtio_gpu_cmd_get_capset_info_cb, &vbuf,
+ sizeof(*cmd_p), sizeof(struct virtio_gpu_resp_capset_info),
+ resp_buf);
+ memset(cmd_p, 0, sizeof(*cmd_p));
+
+ cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_CAPSET_INFO);
+ cmd_p->capset_index = cpu_to_le32(idx);
+ virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+ return 0;
+}
+
+int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
+ int idx, int version,
+ struct virtio_gpu_drv_cap_cache **cache_p)
+{
+ struct virtio_gpu_get_capset *cmd_p;
+ struct virtio_gpu_vbuffer *vbuf;
+ int max_size = vgdev->capsets[idx].max_size;
+ struct virtio_gpu_drv_cap_cache *cache_ent;
+ void *resp_buf;
+
+ if (idx > vgdev->num_capsets)
+ return -EINVAL;
+
+ if (version > vgdev->capsets[idx].max_version)
+ return -EINVAL;
+
+ cache_ent = kzalloc(sizeof(*cache_ent), GFP_KERNEL);
+ if (!cache_ent)
+ return -ENOMEM;
+
+ cache_ent->caps_cache = kmalloc(max_size, GFP_KERNEL);
+ if (!cache_ent->caps_cache) {
+ kfree(cache_ent);
+ return -ENOMEM;
+ }
+
+ resp_buf = kzalloc(sizeof(struct virtio_gpu_resp_capset) + max_size,
+ GFP_KERNEL);
+ if (!resp_buf) {
+ kfree(cache_ent->caps_cache);
+ kfree(cache_ent);
+ return -ENOMEM;
+ }
+
+ cache_ent->version = version;
+ cache_ent->id = vgdev->capsets[idx].id;
+ atomic_set(&cache_ent->is_valid, 0);
+ cache_ent->size = max_size;
+ spin_lock(&vgdev->display_info_lock);
+ list_add_tail(&cache_ent->head, &vgdev->cap_cache);
+ spin_unlock(&vgdev->display_info_lock);
+
+ cmd_p = virtio_gpu_alloc_cmd_resp
+ (vgdev, &virtio_gpu_cmd_capset_cb, &vbuf, sizeof(*cmd_p),
+ sizeof(struct virtio_gpu_resp_capset) + max_size,
+ resp_buf);
+ cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_CAPSET);
+ cmd_p->capset_id = cpu_to_le32(vgdev->capsets[idx].id);
+ cmd_p->capset_version = cpu_to_le32(version);
+ *cache_p = cache_ent;
+ virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+
+ return 0;
+}
+
+void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
+ uint32_t nlen, const char *name)
+{
+ struct virtio_gpu_ctx_create *cmd_p;
+ struct virtio_gpu_vbuffer *vbuf;
+
+ cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+ memset(cmd_p, 0, sizeof(*cmd_p));
+
+ cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_CREATE);
+ cmd_p->hdr.ctx_id = cpu_to_le32(id);
+ cmd_p->nlen = cpu_to_le32(nlen);
+ strncpy(cmd_p->debug_name, name, sizeof(cmd_p->debug_name)-1);
+ cmd_p->debug_name[sizeof(cmd_p->debug_name)-1] = 0;
+ virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+}
+
+void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
+ uint32_t id)
+{
+ struct virtio_gpu_ctx_destroy *cmd_p;
+ struct virtio_gpu_vbuffer *vbuf;
+
+ cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+ memset(cmd_p, 0, sizeof(*cmd_p));
+
+ cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_DESTROY);
+ cmd_p->hdr.ctx_id = cpu_to_le32(id);
+ virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+}
+
+void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
+ uint32_t ctx_id,
+ uint32_t resource_id)
+{
+ struct virtio_gpu_ctx_resource *cmd_p;
+ struct virtio_gpu_vbuffer *vbuf;
+
+ cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+ memset(cmd_p, 0, sizeof(*cmd_p));
+
+ cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE);
+ cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
+ cmd_p->resource_id = cpu_to_le32(resource_id);
+ virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+
+}
+
+void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
+ uint32_t ctx_id,
+ uint32_t resource_id)
+{
+ struct virtio_gpu_ctx_resource *cmd_p;
+ struct virtio_gpu_vbuffer *vbuf;
+
+ cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+ memset(cmd_p, 0, sizeof(*cmd_p));
+
+ cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE);
+ cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
+ cmd_p->resource_id = cpu_to_le32(resource_id);
+ virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+}
+
+void
+virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
+ struct virtio_gpu_resource_create_3d *rc_3d,
+ struct virtio_gpu_fence **fence)
+{
+ struct virtio_gpu_resource_create_3d *cmd_p;
+ struct virtio_gpu_vbuffer *vbuf;
+
+ cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+ memset(cmd_p, 0, sizeof(*cmd_p));
+
+ *cmd_p = *rc_3d;
+ cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_CREATE_3D);
+ cmd_p->hdr.flags = 0;
+
+ virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, &cmd_p->hdr, fence);
+}
+
+void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
+ uint32_t resource_id, uint32_t ctx_id,
+ uint64_t offset, uint32_t level,
+ struct virtio_gpu_box *box,
+ struct virtio_gpu_fence **fence)
+{
+ struct virtio_gpu_transfer_host_3d *cmd_p;
+ struct virtio_gpu_vbuffer *vbuf;
+
+ cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+ memset(cmd_p, 0, sizeof(*cmd_p));
+
+ cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D);
+ cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
+ cmd_p->resource_id = cpu_to_le32(resource_id);
+ cmd_p->box = *box;
+ cmd_p->offset = cpu_to_le64(offset);
+ cmd_p->level = cpu_to_le32(level);
+
+ virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, &cmd_p->hdr, fence);
+}
+
+void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
+ uint32_t resource_id, uint32_t ctx_id,
+ uint64_t offset, uint32_t level,
+ struct virtio_gpu_box *box,
+ struct virtio_gpu_fence **fence)
+{
+ struct virtio_gpu_transfer_host_3d *cmd_p;
+ struct virtio_gpu_vbuffer *vbuf;
+
+ cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+ memset(cmd_p, 0, sizeof(*cmd_p));
+
+ cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D);
+ cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
+ cmd_p->resource_id = cpu_to_le32(resource_id);
+ cmd_p->box = *box;
+ cmd_p->offset = cpu_to_le64(offset);
+ cmd_p->level = cpu_to_le32(level);
+
+ virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, &cmd_p->hdr, fence);
+}
+
+void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
+ void *data, uint32_t data_size,
+ uint32_t ctx_id, struct virtio_gpu_fence **fence)
+{
+ struct virtio_gpu_cmd_submit *cmd_p;
+ struct virtio_gpu_vbuffer *vbuf;
+
+ cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+ memset(cmd_p, 0, sizeof(*cmd_p));
+
+ vbuf->data_buf = data;
+ vbuf->data_size = data_size;
+
+ cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_SUBMIT_3D);
+ cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
+ cmd_p->size = cpu_to_le32(data_size);
+
+ virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, &cmd_p->hdr, fence);
+}
+
int virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
struct virtio_gpu_object *obj,
uint32_t resource_id,
diff --git a/include/uapi/drm/Kbuild b/include/uapi/drm/Kbuild
index 2d9a25d..38d4370 100644
--- a/include/uapi/drm/Kbuild
+++ b/include/uapi/drm/Kbuild
@@ -17,3 +17,4 @@ header-y += tegra_drm.h
header-y += via_drm.h
header-y += vmwgfx_drm.h
header-y += msm_drm.h
+header-y += virtgpu_drm.h
diff --git a/include/uapi/drm/virtgpu_drm.h b/include/uapi/drm/virtgpu_drm.h
new file mode 100644
index 0000000..fc9e2d6
--- /dev/null
+++ b/include/uapi/drm/virtgpu_drm.h
@@ -0,0 +1,167 @@
+/*
+ * Copyright 2013 Red Hat
+ * 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 AUTHORS 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.
+ */
+#ifndef VIRTGPU_DRM_H
+#define VIRTGPU_DRM_H
+
+#include <stddef.h>
+#include "drm/drm.h"
+
+/* Please note that modifications to all structs defined here are
+ * subject to backwards-compatibility constraints.
+ *
+ * Do not use pointers, use uint64_t instead for 32 bit / 64 bit user/kernel
+ * compatibility Keep fields aligned to their size
+ */
+
+#define DRM_VIRTGPU_MAP 0x01
+#define DRM_VIRTGPU_EXECBUFFER 0x02
+#define DRM_VIRTGPU_GETPARAM 0x03
+#define DRM_VIRTGPU_RESOURCE_CREATE 0x04
+#define DRM_VIRTGPU_RESOURCE_INFO 0x05
+#define DRM_VIRTGPU_TRANSFER_FROM_HOST 0x06
+#define DRM_VIRTGPU_TRANSFER_TO_HOST 0x07
+#define DRM_VIRTGPU_WAIT 0x08
+#define DRM_VIRTGPU_GET_CAPS 0x09
+
+struct drm_virtgpu_map {
+ uint64_t offset; /* use for mmap system call */
+ uint32_t handle;
+ uint32_t pad;
+};
+
+struct drm_virtgpu_execbuffer {
+ uint32_t flags; /* for future use */
+ uint32_t size;
+ uint64_t command; /* void* */
+ uint64_t bo_handles;
+ uint32_t num_bo_handles;
+ uint32_t pad;
+};
+
+#define VIRTGPU_PARAM_3D_FEATURES 1 /* do we have 3D features in the hw */
+
+struct drm_virtgpu_getparam {
+ uint64_t param;
+ uint64_t value;
+};
+
+/* NO_BO flags? NO resource flag? */
+/* resource flag for y_0_top */
+struct drm_virtgpu_resource_create {
+ uint32_t target;
+ uint32_t format;
+ uint32_t bind;
+ uint32_t width;
+ uint32_t height;
+ uint32_t depth;
+ uint32_t array_size;
+ uint32_t last_level;
+ uint32_t nr_samples;
+ uint32_t flags;
+ uint32_t bo_handle; /* if this is set - recreate a new resource attached to this bo ? */
+ uint32_t res_handle; /* returned by kernel */
+ uint32_t size; /* validate transfer in the host */
+ uint32_t stride; /* validate transfer in the host */
+};
+
+struct drm_virtgpu_resource_info {
+ uint32_t bo_handle;
+ uint32_t res_handle;
+ uint32_t size;
+ uint32_t stride;
+};
+
+struct drm_virtgpu_3d_box {
+ uint32_t x;
+ uint32_t y;
+ uint32_t z;
+ uint32_t w;
+ uint32_t h;
+ uint32_t d;
+};
+
+struct drm_virtgpu_3d_transfer_to_host {
+ uint32_t bo_handle;
+ struct drm_virtgpu_3d_box box;
+ uint32_t level;
+ uint32_t offset;
+};
+
+struct drm_virtgpu_3d_transfer_from_host {
+ uint32_t bo_handle;
+ struct drm_virtgpu_3d_box box;
+ uint32_t level;
+ uint32_t offset;
+};
+
+#define VIRTGPU_WAIT_NOWAIT 1 /* like it */
+struct drm_virtgpu_3d_wait {
+ uint32_t handle; /* 0 is an invalid handle */
+ uint32_t flags;
+};
+
+struct drm_virtgpu_get_caps {
+ uint32_t cap_set_id;
+ uint32_t cap_set_ver;
+ uint64_t addr;
+ uint32_t size;
+ uint32_t pad;
+};
+
+#define DRM_IOCTL_VIRTGPU_MAP \
+ DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_MAP, struct drm_virtgpu_map)
+
+#define DRM_IOCTL_VIRTGPU_EXECBUFFER \
+ DRM_IOW(DRM_COMMAND_BASE + DRM_VIRTGPU_EXECBUFFER,\
+ struct drm_virtgpu_execbuffer)
+
+#define DRM_IOCTL_VIRTGPU_GETPARAM \
+ DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_GETPARAM,\
+ struct drm_virtgpu_getparam)
+
+#define DRM_IOCTL_VIRTGPU_RESOURCE_CREATE \
+ DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_RESOURCE_CREATE, \
+ struct drm_virtgpu_resource_create)
+
+#define DRM_IOCTL_VIRTGPU_RESOURCE_INFO \
+ DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_RESOURCE_INFO, \
+ struct drm_virtgpu_resource_info)
+
+#define DRM_IOCTL_VIRTGPU_TRANSFER_FROM_HOST \
+ DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_TRANSFER_FROM_HOST, \
+ struct drm_virtgpu_3d_transfer_from_host)
+
+#define DRM_IOCTL_VIRTGPU_TRANSFER_TO_HOST \
+ DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_TRANSFER_TO_HOST, \
+ struct drm_virtgpu_3d_transfer_to_host)
+
+#define DRM_IOCTL_VIRTGPU_WAIT \
+ DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_WAIT, \
+ struct drm_virtgpu_3d_wait)
+
+#define DRM_IOCTL_VIRTGPU_GET_CAPS \
+ DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_GET_CAPS, \
+ struct drm_virtgpu_get_caps)
+
+#endif
diff --git a/include/uapi/linux/virtio_gpu.h b/include/uapi/linux/virtio_gpu.h
index 478be52..7a63faa 100644
--- a/include/uapi/linux/virtio_gpu.h
+++ b/include/uapi/linux/virtio_gpu.h
@@ -40,6 +40,8 @@

#include <linux/types.h>

+#define VIRTIO_GPU_F_VIRGL 0
+
enum virtio_gpu_ctrl_type {
VIRTIO_GPU_UNDEFINED = 0,

@@ -52,6 +54,18 @@ enum virtio_gpu_ctrl_type {
VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D,
VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING,
VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING,
+ VIRTIO_GPU_CMD_GET_CAPSET_INFO,
+ VIRTIO_GPU_CMD_GET_CAPSET,
+
+ /* 3d commands */
+ VIRTIO_GPU_CMD_CTX_CREATE = 0x0200,
+ VIRTIO_GPU_CMD_CTX_DESTROY,
+ VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE,
+ VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE,
+ VIRTIO_GPU_CMD_RESOURCE_CREATE_3D,
+ VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D,
+ VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D,
+ VIRTIO_GPU_CMD_SUBMIT_3D,

/* cursor commands */
VIRTIO_GPU_CMD_UPDATE_CURSOR = 0x0300,
@@ -60,6 +74,8 @@ enum virtio_gpu_ctrl_type {
/* success responses */
VIRTIO_GPU_RESP_OK_NODATA = 0x1100,
VIRTIO_GPU_RESP_OK_DISPLAY_INFO,
+ VIRTIO_GPU_RESP_OK_CAPSET_INFO,
+ VIRTIO_GPU_RESP_OK_CAPSET,

/* error responses */
VIRTIO_GPU_RESP_ERR_UNSPEC = 0x1200,
@@ -180,13 +196,107 @@ struct virtio_gpu_resp_display_info {
} pmodes[VIRTIO_GPU_MAX_SCANOUTS];
};

+/* data passed in the control vq, 3d related */
+
+struct virtio_gpu_box {
+ __le32 x, y, z;
+ __le32 w, h, d;
+};
+
+/* VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D, VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D */
+struct virtio_gpu_transfer_host_3d {
+ struct virtio_gpu_ctrl_hdr hdr;
+ struct virtio_gpu_box box;
+ __le64 offset;
+ __le32 resource_id;
+ __le32 level;
+ __le32 stride;
+ __le32 layer_stride;
+};
+
+/* VIRTIO_GPU_CMD_RESOURCE_CREATE_3D */
+#define VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP (1 << 0)
+struct virtio_gpu_resource_create_3d {
+ struct virtio_gpu_ctrl_hdr hdr;
+ __le32 resource_id;
+ __le32 target;
+ __le32 format;
+ __le32 bind;
+ __le32 width;
+ __le32 height;
+ __le32 depth;
+ __le32 array_size;
+ __le32 last_level;
+ __le32 nr_samples;
+ __le32 flags;
+ __le32 padding;
+};
+
+/* VIRTIO_GPU_CMD_CTX_CREATE */
+struct virtio_gpu_ctx_create {
+ struct virtio_gpu_ctrl_hdr hdr;
+ __le32 nlen;
+ __le32 padding;
+ char debug_name[64];
+};
+
+/* VIRTIO_GPU_CMD_CTX_DESTROY */
+struct virtio_gpu_ctx_destroy {
+ struct virtio_gpu_ctrl_hdr hdr;
+};
+
+/* VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE, VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE */
+struct virtio_gpu_ctx_resource {
+ struct virtio_gpu_ctrl_hdr hdr;
+ __le32 resource_id;
+ __le32 padding;
+};
+
+/* VIRTIO_GPU_CMD_SUBMIT_3D */
+struct virtio_gpu_cmd_submit {
+ struct virtio_gpu_ctrl_hdr hdr;
+ __le32 size;
+ __le32 padding;
+};
+
+#define VIRTIO_GPU_CAPSET_VIRGL 1
+
+/* VIRTIO_GPU_CMD_GET_CAPSET_INFO */
+struct virtio_gpu_get_capset_info {
+ struct virtio_gpu_ctrl_hdr hdr;
+ __le32 capset_index;
+ __le32 padding;
+};
+
+/* VIRTIO_GPU_RESP_OK_CAPSET_INFO */
+struct virtio_gpu_resp_capset_info {
+ struct virtio_gpu_ctrl_hdr hdr;
+ __le32 capset_id;
+ __le32 capset_max_version;
+ __le32 capset_max_size;
+ __le32 padding;
+};
+
+/* VIRTIO_GPU_CMD_GET_CAPSET */
+struct virtio_gpu_get_capset {
+ struct virtio_gpu_ctrl_hdr hdr;
+ __le32 capset_id;
+ __le32 capset_version;
+};
+
+/* VIRTIO_GPU_RESP_OK_CAPSET */
+struct virtio_gpu_resp_capset {
+ struct virtio_gpu_ctrl_hdr hdr;
+ uint8_t capset_data[];
+};
+
#define VIRTIO_GPU_EVENT_DISPLAY (1 << 0)

struct virtio_gpu_config {
__u32 events_read;
__u32 events_clear;
__u32 num_scanouts;
- __u32 reserved;
+ __u32 num_capsets;
};

/* simple formats for fbcon/X use */
--
1.8.3.1