tristate "Virtio GPU driver"
depends on DRM && VIRTIO && MMU
select DRM_KMS_HELPER
- select DRM_TTM
+ select DRM_GEM_SHMEM_HELPER
help
This is the virtual GPU driver for virtio. It can be used with
QEMU based VMMs (like KVM or Xen).
# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
virtio-gpu-y := virtgpu_drv.o virtgpu_kms.o virtgpu_gem.o \
- virtgpu_display.o virtgpu_vq.o virtgpu_ttm.o \
+ virtgpu_display.o virtgpu_vq.o \
virtgpu_fence.o virtgpu_object.o virtgpu_debugfs.o virtgpu_plane.o \
virtgpu_ioctl.o virtgpu_prime.o virtgpu_trace_points.o
MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
MODULE_AUTHOR("Alon Levy");
-static const struct file_operations virtio_gpu_driver_fops = {
- .owner = THIS_MODULE,
- .open = drm_open,
- .mmap = virtio_gpu_mmap,
- .poll = drm_poll,
- .read = drm_read,
- .unlocked_ioctl = drm_ioctl,
- .release = drm_release,
- .compat_ioctl = drm_compat_ioctl,
- .llseek = noop_llseek,
-};
+DEFINE_DRM_GEM_SHMEM_FOPS(virtio_gpu_driver_fops);
static struct drm_driver driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_RENDER | DRIVER_ATOMIC,
#endif
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
- .gem_prime_get_sg_table = virtgpu_gem_prime_get_sg_table,
.gem_prime_import_sg_table = virtgpu_gem_prime_import_sg_table,
- .gem_prime_vmap = virtgpu_gem_prime_vmap,
- .gem_prime_vunmap = virtgpu_gem_prime_vunmap,
- .gem_prime_mmap = virtgpu_gem_prime_mmap,
- .gem_free_object_unlocked = virtio_gpu_gem_free_object,
- .gem_open_object = virtio_gpu_gem_object_open,
- .gem_close_object = virtio_gpu_gem_object_close,
+ .gem_create_object = virtio_gpu_create_object,
.fops = &virtio_gpu_driver_fops,
.ioctls = virtio_gpu_ioctls,
#include <drm/drm_encoder.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_gem.h>
+#include <drm/drm_gem_shmem_helper.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_probe_helper.h>
-#include <drm/ttm/ttm_bo_api.h>
-#include <drm/ttm/ttm_bo_driver.h>
-#include <drm/ttm/ttm_module.h>
-#include <drm/ttm/ttm_placement.h>
#define DRIVER_NAME "virtio_gpu"
#define DRIVER_DESC "virtio GPU"
};
struct virtio_gpu_object {
- struct drm_gem_object gem_base;
+ struct drm_gem_shmem_object base;
uint32_t hw_res_handle;
struct sg_table *pages;
uint32_t mapped;
- void *vmap;
bool dumb;
- struct ttm_place placement_code;
- struct ttm_placement placement;
- struct ttm_buffer_object tbo;
- struct ttm_bo_kmap_obj kmap;
bool created;
};
#define gem_to_virtio_gpu_obj(gobj) \
- container_of((gobj), struct virtio_gpu_object, gem_base)
+ container_of((gobj), struct virtio_gpu_object, base.base)
struct virtio_gpu_object_array {
struct ww_acquire_ctx ticket;
#define to_virtio_gpu_framebuffer(x) \
container_of(x, struct virtio_gpu_framebuffer, base)
-struct virtio_gpu_mman {
- struct ttm_bo_device bdev;
-};
-
struct virtio_gpu_queue {
struct virtqueue *vq;
spinlock_t qlock;
struct virtio_device *vdev;
- struct virtio_gpu_mman mman;
-
struct virtio_gpu_output outputs[VIRTIO_GPU_MAX_SCANOUTS];
uint32_t num_scanouts;
enum drm_plane_type type,
int index);
-/* virtio_gpu_ttm.c */
-int virtio_gpu_ttm_init(struct virtio_gpu_device *vgdev);
-void virtio_gpu_ttm_fini(struct virtio_gpu_device *vgdev);
-int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma);
-
/* virtio_gpu_fence.c */
bool virtio_fence_signaled(struct dma_fence *f);
struct virtio_gpu_fence *virtio_gpu_fence_alloc(
u64 last_seq);
/* virtio_gpu_object */
+struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
+ size_t size);
int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
struct virtio_gpu_object_params *params,
struct virtio_gpu_object **bo_ptr,
struct virtio_gpu_fence *fence);
-void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo);
-int virtio_gpu_object_kmap(struct virtio_gpu_object *bo);
-int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev,
- struct virtio_gpu_object *bo);
-void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo);
/* virtgpu_prime.c */
-struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj);
struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
struct drm_device *dev, struct dma_buf_attachment *attach,
struct sg_table *sgt);
-void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj);
-void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
-int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,
- struct vm_area_struct *vma);
static inline struct virtio_gpu_object*
virtio_gpu_object_ref(struct virtio_gpu_object *bo)
{
- ttm_bo_get(&bo->tbo);
+ drm_gem_object_get(&bo->base.base);
return bo;
}
static inline void virtio_gpu_object_unref(struct virtio_gpu_object **bo)
{
- struct ttm_buffer_object *tbo;
-
if ((*bo) == NULL)
return;
- tbo = &((*bo)->tbo);
- ttm_bo_put(tbo);
+ drm_gem_object_put(&(*bo)->base.base);
*bo = NULL;
}
static inline u64 virtio_gpu_object_mmap_offset(struct virtio_gpu_object *bo)
{
- return drm_vma_node_offset_addr(&bo->tbo.base.vma_node);
+ return drm_vma_node_offset_addr(&bo->base.base.vma_node);
}
static inline int virtio_gpu_object_reserve(struct virtio_gpu_object *bo)
{
int r;
- r = dma_resv_lock_interruptible(bo->gem_base.resv, NULL);
+ r = dma_resv_lock_interruptible(bo->base.base.resv, NULL);
if (unlikely(r != 0)) {
if (r != -EINTR) {
struct virtio_gpu_device *qdev =
- bo->gem_base.dev->dev_private;
+ bo->base.base.dev->dev_private;
dev_err(qdev->dev, "%p reserve failed\n", bo);
}
return r;
static inline void virtio_gpu_object_unreserve(struct virtio_gpu_object *bo)
{
- dma_resv_unlock(bo->gem_base.resv);
+ dma_resv_unlock(bo->base.base.resv);
}
/* virgl debufs */
#include "virtgpu_drv.h"
-void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj)
-{
- struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(gem_obj);
-
- if (obj)
- virtio_gpu_object_unref(&obj);
-}
-
struct virtio_gpu_object*
virtio_gpu_alloc_object(struct drm_device *dev,
struct virtio_gpu_object_params *params,
if (IS_ERR(obj))
return PTR_ERR(obj);
- ret = drm_gem_handle_create(file, &obj->gem_base, &handle);
+ ret = drm_gem_handle_create(file, &obj->base.base, &handle);
if (ret) {
- drm_gem_object_release(&obj->gem_base);
+ drm_gem_object_release(&obj->base.base);
return ret;
}
- *obj_p = &obj->gem_base;
+ *obj_p = &obj->base.base;
/* drop reference from allocate - handle holds it now */
- drm_gem_object_put_unlocked(&obj->gem_base);
+ drm_gem_object_put_unlocked(&obj->base.base);
*handle_p = handle;
return 0;
#include <linux/sync_file.h>
#include <drm/drm_file.h>
-#include <drm/ttm/ttm_execbuf_util.h>
#include <drm/virtgpu_drm.h>
#include "virtgpu_drv.h"
dma_fence_put(&fence->f);
if (IS_ERR(qobj))
return PTR_ERR(qobj);
- obj = &qobj->gem_base;
+ obj = &qobj->base.base;
ret = drm_gem_handle_create(file_priv, obj, &handle);
if (ret) {
qobj = gem_to_virtio_gpu_obj(gobj);
- ri->size = qobj->gem_base.size;
+ ri->size = qobj->base.base.size;
ri->res_handle = qobj->hw_res_handle;
drm_gem_object_put_unlocked(gobj);
return 0;
goto err_vbufs;
}
- ret = virtio_gpu_ttm_init(vgdev);
- if (ret) {
- DRM_ERROR("failed to init ttm %d\n", ret);
- goto err_ttm;
- }
-
/* get display info */
virtio_cread(vgdev->vdev, struct virtio_gpu_config,
num_scanouts, &num_scanouts);
return 0;
err_scanouts:
- virtio_gpu_ttm_fini(vgdev);
-err_ttm:
virtio_gpu_free_vbufs(vgdev);
err_vbufs:
vgdev->vdev->config->del_vqs(vgdev->vdev);
vgdev->vdev->config->del_vqs(vgdev->vdev);
virtio_gpu_modeset_fini(vgdev);
- virtio_gpu_ttm_fini(vgdev);
virtio_gpu_free_vbufs(vgdev);
virtio_gpu_cleanup_cap_cache(vgdev);
kfree(vgdev->capsets);
#include <linux/moduleparam.h>
-#include <drm/ttm/ttm_execbuf_util.h>
-
#include "virtgpu_drv.h"
static int virtio_gpu_virglrenderer_workaround = 1;
}
}
-static void virtio_gpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)
+static void virtio_gpu_free_object(struct drm_gem_object *obj)
{
- struct virtio_gpu_object *bo;
- struct virtio_gpu_device *vgdev;
-
- bo = container_of(tbo, struct virtio_gpu_object, tbo);
- vgdev = (struct virtio_gpu_device *)bo->gem_base.dev->dev_private;
+ struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
+ struct virtio_gpu_device *vgdev = bo->base.base.dev->dev_private;
+ if (bo->pages)
+ virtio_gpu_object_detach(vgdev, bo);
if (bo->created)
virtio_gpu_cmd_unref_resource(vgdev, bo->hw_res_handle);
- if (bo->pages)
- virtio_gpu_object_free_sg_table(bo);
- if (bo->vmap)
- virtio_gpu_object_kunmap(bo);
- drm_gem_object_release(&bo->gem_base);
virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle);
- kfree(bo);
+
+ drm_gem_shmem_free_object(obj);
}
-static void virtio_gpu_init_ttm_placement(struct virtio_gpu_object *vgbo)
+static const struct drm_gem_object_funcs virtio_gpu_gem_funcs = {
+ .free = virtio_gpu_free_object,
+ .open = virtio_gpu_gem_object_open,
+ .close = virtio_gpu_gem_object_close,
+
+ .print_info = drm_gem_shmem_print_info,
+ .pin = drm_gem_shmem_pin,
+ .unpin = drm_gem_shmem_unpin,
+ .get_sg_table = drm_gem_shmem_get_sg_table,
+ .vmap = drm_gem_shmem_vmap,
+ .vunmap = drm_gem_shmem_vunmap,
+ .vm_ops = &drm_gem_shmem_vm_ops,
+};
+
+struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
+ size_t size)
{
- u32 c = 1;
-
- vgbo->placement.placement = &vgbo->placement_code;
- vgbo->placement.busy_placement = &vgbo->placement_code;
- vgbo->placement_code.fpfn = 0;
- vgbo->placement_code.lpfn = 0;
- vgbo->placement_code.flags =
- TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT |
- TTM_PL_FLAG_NO_EVICT;
- vgbo->placement.num_placement = c;
- vgbo->placement.num_busy_placement = c;
+ struct virtio_gpu_object *bo;
+
+ bo = kzalloc(sizeof(*bo), GFP_KERNEL);
+ if (!bo)
+ return NULL;
+ bo->base.base.funcs = &virtio_gpu_gem_funcs;
+ return &bo->base.base;
}
int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
struct virtio_gpu_fence *fence)
{
struct virtio_gpu_object_array *objs = NULL;
+ struct drm_gem_shmem_object *shmem_obj;
struct virtio_gpu_object *bo;
- size_t acc_size;
int ret;
*bo_ptr = NULL;
- acc_size = ttm_bo_dma_acc_size(&vgdev->mman.bdev, params->size,
- sizeof(struct virtio_gpu_object));
+ params->size = roundup(params->size, PAGE_SIZE);
+ shmem_obj = drm_gem_shmem_create(vgdev->ddev, params->size);
+ if (IS_ERR(shmem_obj))
+ return PTR_ERR(shmem_obj);
+ bo = gem_to_virtio_gpu_obj(&shmem_obj->base);
- bo = kzalloc(sizeof(struct virtio_gpu_object), GFP_KERNEL);
- if (bo == NULL)
- return -ENOMEM;
ret = virtio_gpu_resource_id_get(vgdev, &bo->hw_res_handle);
if (ret < 0)
goto err_free_gem;
- params->size = roundup(params->size, PAGE_SIZE);
- ret = drm_gem_object_init(vgdev->ddev, &bo->gem_base, params->size);
- if (ret != 0)
- goto err_put_id;
-
bo->dumb = params->dumb;
if (fence) {
objs = virtio_gpu_array_alloc(1);
if (!objs)
goto err_put_id;
- virtio_gpu_array_add_obj(objs, &bo->gem_base);
+ virtio_gpu_array_add_obj(objs, &bo->base.base);
ret = virtio_gpu_array_lock_resv(objs);
if (ret != 0)
objs, fence);
}
- virtio_gpu_init_ttm_placement(bo);
- ret = ttm_bo_init(&vgdev->mman.bdev, &bo->tbo, params->size,
- ttm_bo_type_device, &bo->placement, 0,
- true, acc_size, NULL,
- bo->gem_base.resv,
- &virtio_gpu_ttm_bo_destroy);
- /* ttm_bo_init failure will call the destroy */
- if (ret != 0)
+ ret = virtio_gpu_object_attach(vgdev, bo, NULL);
+ if (ret != 0) {
+ virtio_gpu_free_object(&shmem_obj->base);
return ret;
+ }
*bo_ptr = bo;
return 0;
err_put_id:
virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle);
err_free_gem:
- kfree(bo);
+ drm_gem_shmem_free_object(&shmem_obj->base);
return ret;
}
-
-void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo)
-{
- bo->vmap = NULL;
- ttm_bo_kunmap(&bo->kmap);
-}
-
-int virtio_gpu_object_kmap(struct virtio_gpu_object *bo)
-{
- bool is_iomem;
- int r;
-
- WARN_ON(bo->vmap);
-
- r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
- if (r)
- return r;
- bo->vmap = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
- return 0;
-}
-
-int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev,
- struct virtio_gpu_object *bo)
-{
- int ret;
- struct page **pages = bo->tbo.ttm->pages;
- int nr_pages = bo->tbo.num_pages;
- struct ttm_operation_ctx ctx = {
- .interruptible = false,
- .no_wait_gpu = false
- };
-
- /* wtf swapping */
- if (bo->pages)
- return 0;
-
- if (bo->tbo.ttm->state == tt_unpopulated)
- bo->tbo.ttm->bdev->driver->ttm_tt_populate(bo->tbo.ttm, &ctx);
- bo->pages = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
- if (!bo->pages)
- goto out;
-
- ret = sg_alloc_table_from_pages(bo->pages, pages, nr_pages, 0,
- nr_pages << PAGE_SHIFT, GFP_KERNEL);
- if (ret)
- goto out;
- return 0;
-out:
- kfree(bo->pages);
- bo->pages = NULL;
- return -ENOMEM;
-}
-
-void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo)
-{
- sg_free_table(bo->pages);
- kfree(bo->pages);
- bo->pages = NULL;
-}
* device that might share buffers with virtgpu
*/
-struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj)
-{
- struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
-
- if (!bo->tbo.ttm->pages || !bo->tbo.ttm->num_pages)
- /* should not happen */
- return ERR_PTR(-EINVAL);
-
- return drm_prime_pages_to_sg(bo->tbo.ttm->pages,
- bo->tbo.ttm->num_pages);
-}
-
struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
struct drm_device *dev, struct dma_buf_attachment *attach,
struct sg_table *table)
{
return ERR_PTR(-ENODEV);
}
-
-void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj)
-{
- struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
- int ret;
-
- ret = virtio_gpu_object_kmap(bo);
- if (ret)
- return NULL;
- return bo->vmap;
-}
-
-void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
-{
- virtio_gpu_object_kunmap(gem_to_virtio_gpu_obj(obj));
-}
-
-int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,
- struct vm_area_struct *vma)
-{
- return drm_gem_prime_mmap(obj, vma);
-}
+++ /dev/null
-/*
- * 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 <linux/delay.h>
-
-#include <drm/drm.h>
-#include <drm/drm_file.h>
-#include <drm/ttm/ttm_bo_api.h>
-#include <drm/ttm/ttm_bo_driver.h>
-#include <drm/ttm/ttm_module.h>
-#include <drm/ttm/ttm_page_alloc.h>
-#include <drm/ttm/ttm_placement.h>
-#include <drm/virtgpu_drm.h>
-
-#include "virtgpu_drv.h"
-
-static struct
-virtio_gpu_device *virtio_gpu_get_vgdev(struct ttm_bo_device *bdev)
-{
- struct virtio_gpu_mman *mman;
- struct virtio_gpu_device *vgdev;
-
- mman = container_of(bdev, struct virtio_gpu_mman, bdev);
- vgdev = container_of(mman, struct virtio_gpu_device, mman);
- return vgdev;
-}
-
-int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma)
-{
- struct drm_file *file_priv;
- struct virtio_gpu_device *vgdev;
- int r;
-
- file_priv = filp->private_data;
- vgdev = file_priv->minor->dev->dev_private;
- if (vgdev == NULL) {
- DRM_ERROR(
- "filp->private_data->minor->dev->dev_private == NULL\n");
- return -EINVAL;
- }
- r = ttm_bo_mmap(filp, vma, &vgdev->mman.bdev);
-
- return r;
-}
-
-static int virtio_gpu_invalidate_caches(struct ttm_bo_device *bdev,
- uint32_t flags)
-{
- return 0;
-}
-
-static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man,
- struct ttm_buffer_object *bo,
- const struct ttm_place *place,
- struct ttm_mem_reg *mem)
-{
- mem->mm_node = (void *)1;
- return 0;
-}
-
-static void ttm_bo_man_put_node(struct ttm_mem_type_manager *man,
- struct ttm_mem_reg *mem)
-{
- mem->mm_node = (void *)NULL;
-}
-
-static int ttm_bo_man_init(struct ttm_mem_type_manager *man,
- unsigned long p_size)
-{
- return 0;
-}
-
-static int ttm_bo_man_takedown(struct ttm_mem_type_manager *man)
-{
- return 0;
-}
-
-static void ttm_bo_man_debug(struct ttm_mem_type_manager *man,
- struct drm_printer *printer)
-{
-}
-
-static const struct ttm_mem_type_manager_func virtio_gpu_bo_manager_func = {
- .init = ttm_bo_man_init,
- .takedown = ttm_bo_man_takedown,
- .get_node = ttm_bo_man_get_node,
- .put_node = ttm_bo_man_put_node,
- .debug = ttm_bo_man_debug
-};
-
-static int virtio_gpu_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
- struct ttm_mem_type_manager *man)
-{
- switch (type) {
- case TTM_PL_SYSTEM:
- /* System memory */
- man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
- man->available_caching = TTM_PL_MASK_CACHING;
- man->default_caching = TTM_PL_FLAG_CACHED;
- break;
- case TTM_PL_TT:
- man->func = &virtio_gpu_bo_manager_func;
- man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
- man->available_caching = TTM_PL_MASK_CACHING;
- man->default_caching = TTM_PL_FLAG_CACHED;
- break;
- default:
- DRM_ERROR("Unsupported memory type %u\n", (unsigned int)type);
- return -EINVAL;
- }
- return 0;
-}
-
-static void virtio_gpu_evict_flags(struct ttm_buffer_object *bo,
- struct ttm_placement *placement)
-{
- static const struct ttm_place placements = {
- .fpfn = 0,
- .lpfn = 0,
- .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM,
- };
-
- placement->placement = &placements;
- placement->busy_placement = &placements;
- placement->num_placement = 1;
- placement->num_busy_placement = 1;
-}
-
-static int virtio_gpu_verify_access(struct ttm_buffer_object *bo,
- struct file *filp)
-{
- return 0;
-}
-
-static int virtio_gpu_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem)
-{
- struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
-
- mem->bus.addr = NULL;
- mem->bus.offset = 0;
- mem->bus.size = mem->num_pages << PAGE_SHIFT;
- mem->bus.base = 0;
- mem->bus.is_iomem = false;
- if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
- return -EINVAL;
- switch (mem->mem_type) {
- case TTM_PL_SYSTEM:
- case TTM_PL_TT:
- /* system memory */
- return 0;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-static void virtio_gpu_ttm_io_mem_free(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem)
-{
-}
-
-/*
- * TTM backend functions.
- */
-struct virtio_gpu_ttm_tt {
- struct ttm_dma_tt ttm;
- struct virtio_gpu_object *obj;
-};
-
-static int virtio_gpu_ttm_tt_bind(struct ttm_tt *ttm,
- struct ttm_mem_reg *bo_mem)
-{
- struct virtio_gpu_ttm_tt *gtt =
- container_of(ttm, struct virtio_gpu_ttm_tt, ttm.ttm);
- struct virtio_gpu_device *vgdev =
- virtio_gpu_get_vgdev(gtt->obj->tbo.bdev);
-
- virtio_gpu_object_attach(vgdev, gtt->obj, NULL);
- return 0;
-}
-
-static int virtio_gpu_ttm_tt_unbind(struct ttm_tt *ttm)
-{
- struct virtio_gpu_ttm_tt *gtt =
- container_of(ttm, struct virtio_gpu_ttm_tt, ttm.ttm);
- struct virtio_gpu_device *vgdev =
- virtio_gpu_get_vgdev(gtt->obj->tbo.bdev);
-
- virtio_gpu_object_detach(vgdev, gtt->obj);
- return 0;
-}
-
-static void virtio_gpu_ttm_tt_destroy(struct ttm_tt *ttm)
-{
- struct virtio_gpu_ttm_tt *gtt =
- container_of(ttm, struct virtio_gpu_ttm_tt, ttm.ttm);
-
- ttm_dma_tt_fini(>t->ttm);
- kfree(gtt);
-}
-
-static struct ttm_backend_func virtio_gpu_tt_func = {
- .bind = &virtio_gpu_ttm_tt_bind,
- .unbind = &virtio_gpu_ttm_tt_unbind,
- .destroy = &virtio_gpu_ttm_tt_destroy,
-};
-
-static struct ttm_tt *virtio_gpu_ttm_tt_create(struct ttm_buffer_object *bo,
- uint32_t page_flags)
-{
- struct virtio_gpu_device *vgdev;
- struct virtio_gpu_ttm_tt *gtt;
-
- vgdev = virtio_gpu_get_vgdev(bo->bdev);
- gtt = kzalloc(sizeof(struct virtio_gpu_ttm_tt), GFP_KERNEL);
- if (gtt == NULL)
- return NULL;
- gtt->ttm.ttm.func = &virtio_gpu_tt_func;
- gtt->obj = container_of(bo, struct virtio_gpu_object, tbo);
- if (ttm_dma_tt_init(>t->ttm, bo, page_flags)) {
- kfree(gtt);
- return NULL;
- }
- return >t->ttm.ttm;
-}
-
-static void virtio_gpu_bo_swap_notify(struct ttm_buffer_object *tbo)
-{
- struct virtio_gpu_object *bo;
-
- bo = container_of(tbo, struct virtio_gpu_object, tbo);
-
- if (bo->pages)
- virtio_gpu_object_free_sg_table(bo);
-}
-
-static struct ttm_bo_driver virtio_gpu_bo_driver = {
- .ttm_tt_create = &virtio_gpu_ttm_tt_create,
- .invalidate_caches = &virtio_gpu_invalidate_caches,
- .init_mem_type = &virtio_gpu_init_mem_type,
- .eviction_valuable = ttm_bo_eviction_valuable,
- .evict_flags = &virtio_gpu_evict_flags,
- .verify_access = &virtio_gpu_verify_access,
- .io_mem_reserve = &virtio_gpu_ttm_io_mem_reserve,
- .io_mem_free = &virtio_gpu_ttm_io_mem_free,
- .swap_notify = &virtio_gpu_bo_swap_notify,
-};
-
-int virtio_gpu_ttm_init(struct virtio_gpu_device *vgdev)
-{
- int r;
-
- /* No others user of address space so set it to 0 */
- r = ttm_bo_device_init(&vgdev->mman.bdev,
- &virtio_gpu_bo_driver,
- vgdev->ddev->anon_inode->i_mapping,
- false);
- if (r) {
- DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
- goto err_dev_init;
- }
-
- r = ttm_bo_init_mm(&vgdev->mman.bdev, TTM_PL_TT, 0);
- if (r) {
- DRM_ERROR("Failed initializing GTT heap.\n");
- goto err_mm_init;
- }
- return 0;
-
-err_mm_init:
- ttm_bo_device_release(&vgdev->mman.bdev);
-err_dev_init:
- return r;
-}
-
-void virtio_gpu_ttm_fini(struct virtio_gpu_device *vgdev)
-{
- ttm_bo_device_release(&vgdev->mman.bdev);
- DRM_INFO("virtio_gpu: ttm finalized\n");
-}
bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev);
struct virtio_gpu_mem_entry *ents;
struct scatterlist *sg;
- int si, nents;
+ int si, nents, ret;
if (WARN_ON_ONCE(!obj->created))
return -EINVAL;
+ if (WARN_ON_ONCE(obj->pages))
+ return -EINVAL;
- if (!obj->pages) {
- int ret;
+ ret = drm_gem_shmem_pin(&obj->base.base);
+ if (ret < 0)
+ return -EINVAL;
- ret = virtio_gpu_object_get_sg_table(vgdev, obj);
- if (ret)
- return ret;
+ obj->pages = drm_gem_shmem_get_sg_table(&obj->base.base);
+ if (obj->pages == NULL) {
+ drm_gem_shmem_unpin(&obj->base.base);
+ return -EINVAL;
}
if (use_dma_api) {
{
bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev);
+ if (WARN_ON_ONCE(!obj->pages))
+ return;
+
if (use_dma_api && obj->mapped) {
struct virtio_gpu_fence *fence = virtio_gpu_fence_alloc(vgdev);
/* detach backing and wait for the host process it ... */
} else {
virtio_gpu_cmd_resource_inval_backing(vgdev, obj->hw_res_handle, NULL);
}
+
+ sg_free_table(obj->pages);
+ obj->pages = NULL;
+
+ drm_gem_shmem_unpin(&obj->base.base);
}
void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
projects / platform / kernel / linux-rpi.git / commitdiff