static int bochs_bo_verify_access(struct ttm_buffer_object *bo,
struct file *filp)
{
struct bochs_bo *bochsbo = bochs_bo(bo);
return drm_vma_node_verify_access(&bochsbo->gem.vma_node, filp);
}
static int hibmc_bo_verify_access(struct ttm_buffer_object *bo,
struct file *filp)
{
struct hibmc_bo *hibmcbo = hibmc_bo(bo);
return drm_vma_node_verify_access(&hibmcbo->gem.vma_node,
filp->private_data);
}
static int radeon_verify_access(struct ttm_buffer_object *bo, struct file *filp)
{
struct radeon_bo *rbo = container_of(bo, struct radeon_bo, tbo);
return drm_vma_node_verify_access(&rbo->gem_base.vma_node, filp);
}
static void qxl_evict_flags(struct ttm_buffer_object *bo,
struct ttm_placement *placement)
{
struct qxl_bo *qbo;
static struct ttm_place placements = {
.fpfn = 0,
.lpfn = 0,
.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
};
if (!qxl_ttm_bo_is_qxl_bo(bo)) {
placement->placement = &placements;
placement->busy_placement = &placements;
placement->num_placement = 1;
placement->num_busy_placement = 1;
return;
}
qbo = to_qxl_bo(bo);
qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
*placement = qbo->placement;
}
static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
{
struct qxl_bo *qbo = to_qxl_bo(bo);
return drm_vma_node_verify_access(&qbo->gem_base.vma_node,
filp->private_data);
}
static int qxl_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];
struct qxl_device *qdev = qxl_get_qdev(bdev);
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:
/* system memory */
return 0;
case TTM_PL_VRAM:
mem->bus.is_iomem = true;
mem->bus.base = qdev->vram_base;
mem->bus.offset = mem->start << PAGE_SHIFT;
break;
case TTM_PL_PRIV:
mem->bus.is_iomem = true;
mem->bus.base = qdev->surfaceram_base;
mem->bus.offset = mem->start << PAGE_SHIFT;
break;
default:
return -EINVAL;
}
return 0;
}
static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
struct ttm_mem_reg *mem)
{
}
/*
* TTM backend functions.
*/
struct qxl_ttm_tt {
struct ttm_dma_tt ttm;
struct qxl_device *qdev;
u64 offset;
};
static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
struct ttm_mem_reg *bo_mem)
{
struct qxl_ttm_tt *gtt = (void *)ttm;
gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
if (!ttm->num_pages) {
WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
ttm->num_pages, bo_mem, ttm);
}
/* Not implemented */
return -1;
}
static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
{
/* Not implemented */
return -1;
}
static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
{
struct qxl_ttm_tt *gtt = (void *)ttm;
ttm_dma_tt_fini(>t->ttm);
kfree(gtt);
}
static struct ttm_backend_func qxl_backend_func = {
.bind = &qxl_ttm_backend_bind,
.unbind = &qxl_ttm_backend_unbind,
.destroy = &qxl_ttm_backend_destroy,
};
static int qxl_ttm_tt_populate(struct ttm_tt *ttm)
{
int r;
if (ttm->state != tt_unpopulated)
return 0;
r = ttm_pool_populate(ttm);
if (r)
return r;
return 0;
}
