/*
* __drm_gem_cma_create - Create a GEM CMA object without allocating memory
* @drm: The drm device
* @size: The GEM object size
*
* This function creates and initializes a GEM CMA object of the given size, but
* doesn't allocate any memory to back the object.
*
* Return a struct drm_gem_cma_object* on success or ERR_PTR values on failure.
*/
static struct drm_gem_cma_object *
__drm_gem_cma_create(struct drm_device *drm, unsigned int size)
{
struct drm_gem_cma_object *cma_obj;
struct drm_gem_object *gem_obj;
int ret;
cma_obj = kzalloc(sizeof(*cma_obj), GFP_KERNEL);
if (!cma_obj)
return ERR_PTR(-ENOMEM);
gem_obj = &cma_obj->base;
ret = drm_gem_object_init(drm, gem_obj, size);
if (ret)
goto error;
ret = drm_gem_create_mmap_offset(gem_obj);
if (ret) {
drm_gem_object_release(gem_obj);
goto error;
}
return cma_obj;
error:
kfree(cma_obj);
return ERR_PTR(ret);
}
struct drm_gem_object *msm_gem_new(struct drm_device *dev,
uint32_t size, uint32_t flags)
{
struct drm_gem_object *obj = NULL;
int ret;
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
size = PAGE_ALIGN(size);
ret = msm_gem_new_impl(dev, size, flags, NULL, &obj);
if (ret)
goto fail;
if (use_pages(obj)) {
ret = drm_gem_object_init(dev, obj, size);
if (ret)
goto fail;
} else {
drm_gem_private_object_init(dev, obj, size);
}
return obj;
fail:
drm_gem_object_unreference(obj);
return ERR_PTR(ret);
}
static struct tegra_bo *tegra_bo_alloc_object(struct drm_device *drm,
size_t size)
{
struct tegra_bo *bo;
int err;
bo = kzalloc(sizeof(*bo), GFP_KERNEL);
if (!bo)
return ERR_PTR(-ENOMEM);
host1x_bo_init(&bo->base, &tegra_bo_ops);
size = round_up(size, PAGE_SIZE);
err = drm_gem_object_init(drm, &bo->gem, size);
if (err < 0)
goto free;
err = drm_gem_create_mmap_offset(&bo->gem);
if (err < 0)
goto release;
return bo;
release:
drm_gem_object_release(&bo->gem);
free:
kfree(bo);
return ERR_PTR(err);
}
/**
* __drm_gem_cma_create - Create a GEM CMA object without allocating memory
* @drm: DRM device
* @size: size of the object to allocate
*
* This function creates and initializes a GEM CMA object of the given size,
* but doesn't allocate any memory to back the object.
*
* Returns:
* A struct drm_gem_cma_object * on success or an ERR_PTR()-encoded negative
* error code on failure.
*/
static struct drm_gem_cma_object *
__drm_gem_cma_create(struct drm_device *drm, size_t size)
{
struct drm_gem_cma_object *cma_obj;
struct drm_gem_object *gem_obj;
int ret;
if (drm->driver->gem_create_object)
gem_obj = drm->driver->gem_create_object(drm, size);
else
gem_obj = kzalloc(sizeof(*cma_obj), GFP_KERNEL);
if (!gem_obj)
return ERR_PTR(-ENOMEM);
cma_obj = container_of(gem_obj, struct drm_gem_cma_object, base);
ret = drm_gem_object_init(drm, gem_obj, size);
if (ret)
goto error;
ret = drm_gem_create_mmap_offset(gem_obj);
if (ret) {
drm_gem_object_release(gem_obj);
goto error;
}
return cma_obj;
error:
kfree(cma_obj);
return ERR_PTR(ret);
}
struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
size_t size)
{
struct udl_gem_object *obj;
obj = kzalloc(sizeof(*obj), GFP_KERNEL);
if (obj == NULL)
return NULL;
if (drm_gem_object_init(dev, &obj->base, size) != 0) {
kfree(obj);
return NULL;
}
return obj;
}
struct tegra_bo *tegra_bo_create(struct drm_device *drm, unsigned int size,
unsigned long flags)
{
struct tegra_bo *bo;
int err;
bo = kzalloc(sizeof(*bo), GFP_KERNEL);
if (!bo)
return ERR_PTR(-ENOMEM);
host1x_bo_init(&bo->base, &tegra_bo_ops);
size = round_up(size, PAGE_SIZE);
bo->vaddr = dma_alloc_writecombine(drm->dev, size, &bo->paddr,
GFP_KERNEL | __GFP_NOWARN);
if (!bo->vaddr) {
dev_err(drm->dev, "failed to allocate buffer with size %u\n",
size);
err = -ENOMEM;
goto err_dma;
}
err = drm_gem_object_init(drm, &bo->gem, size);
if (err)
goto err_init;
err = drm_gem_create_mmap_offset(&bo->gem);
if (err)
goto err_mmap;
if (flags & DRM_TEGRA_GEM_CREATE_TILED)
bo->tiling.mode = TEGRA_BO_TILING_MODE_TILED;
if (flags & DRM_TEGRA_GEM_CREATE_BOTTOM_UP)
bo->flags |= TEGRA_BO_BOTTOM_UP;
return bo;
err_mmap:
drm_gem_object_release(&bo->gem);
err_init:
tegra_bo_destroy(drm, bo);
err_dma:
kfree(bo);
return ERR_PTR(err);
}
int
nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
uint32_t tile_mode, uint32_t tile_flags,
struct nouveau_bo **pnvbo)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nouveau_bo *nvbo;
u32 flags = 0;
int ret;
if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
flags |= TTM_PL_FLAG_VRAM;
if (domain & NOUVEAU_GEM_DOMAIN_GART)
flags |= TTM_PL_FLAG_TT;
if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
flags |= TTM_PL_FLAG_SYSTEM;
if (domain & NOUVEAU_GEM_DOMAIN_MAPPABLE)
flags |= TTM_PL_FLAG_UNCACHED;
ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
tile_flags, NULL, NULL, pnvbo);
if (ret)
return ret;
nvbo = *pnvbo;
/* we restrict allowed domains on nv50+ to only the types
* that were requested at creation time. not possibly on
* earlier chips without busting the ABI.
*/
nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
NOUVEAU_GEM_DOMAIN_GART;
if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
nvbo->valid_domains &= domain;
/* Initialize the embedded gem-object. We return a single gem-reference
* to the caller, instead of a normal nouveau_bo ttm reference. */
ret = drm_gem_object_init(dev, &nvbo->gem, nvbo->bo.mem.size);
if (ret) {
nouveau_bo_ref(NULL, pnvbo);
return -ENOMEM;
}
nvbo->bo.persistent_swap_storage = nvbo->gem.filp;
return 0;
}
/*
* drm_gem_cma_create - allocate an object with the given size
*
* returns a struct drm_gem_cma_object* on success or ERR_PTR values
* on failure.
*/
struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
unsigned int size)
{
struct drm_gem_cma_object *cma_obj;
struct drm_gem_object *gem_obj;
int ret;
size = round_up(size, PAGE_SIZE);
cma_obj = kzalloc(sizeof(*cma_obj), GFP_KERNEL);
if (!cma_obj)
return ERR_PTR(-ENOMEM);
cma_obj->vaddr = dma_alloc_writecombine(drm->dev, size,
&cma_obj->paddr, GFP_KERNEL | __GFP_NOWARN);
if (!cma_obj->vaddr) {
dev_err(drm->dev, "failed to allocate buffer with size %d\n", size);
ret = -ENOMEM;
goto err_dma_alloc;
}
gem_obj = &cma_obj->base;
ret = drm_gem_object_init(drm, gem_obj, size);
if (ret)
goto err_obj_init;
ret = drm_gem_create_mmap_offset(gem_obj);
if (ret)
goto err_create_mmap_offset;
return cma_obj;
err_create_mmap_offset:
drm_gem_object_release(gem_obj);
err_obj_init:
drm_gem_cma_buf_destroy(drm, cma_obj);
err_dma_alloc:
kfree(cma_obj);
return ERR_PTR(ret);
}
int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
unsigned long size, bool kernel, bool pinned,
struct virtio_gpu_object **bo_ptr)
{
struct virtio_gpu_object *bo;
enum ttm_bo_type type;
size_t acc_size;
int ret;
if (kernel)
type = ttm_bo_type_kernel;
else
type = ttm_bo_type_device;
*bo_ptr = NULL;
acc_size = ttm_bo_dma_acc_size(&vgdev->mman.bdev, size,
sizeof(struct virtio_gpu_object));
bo = kzalloc(sizeof(struct virtio_gpu_object), GFP_KERNEL);
if (bo == NULL)
return -ENOMEM;
size = roundup(size, PAGE_SIZE);
ret = drm_gem_object_init(vgdev->ddev, &bo->gem_base, size);
if (ret != 0)
goto err_gem_init;
bo->dumb = false;
virtio_gpu_init_ttm_placement(bo, pinned);
ret = ttm_bo_init(&vgdev->mman.bdev, &bo->tbo, size, type,
&bo->placement, 0, !kernel, NULL, acc_size,
NULL, NULL, &virtio_gpu_ttm_bo_destroy);
if (ret != 0)
goto err_ttm_init;
*bo_ptr = bo;
return 0;
err_ttm_init:
drm_gem_object_release(&bo->gem_base);
err_gem_init:
kfree(bo);
return ret;
}
struct drm_gem_object *
drm_gem_object_alloc(struct drm_device *dev, size_t size)
{
struct drm_gem_object *obj;
obj = malloc(sizeof(*obj), DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
if (drm_gem_object_init(dev, obj, size) != 0)
goto free;
if (dev->driver->gem_init_object != NULL &&
dev->driver->gem_init_object(obj) != 0)
goto dealloc;
return (obj);
dealloc:
vm_object_deallocate(obj->vm_obj);
free:
free(obj, DRM_MEM_DRIVER);
return (NULL);
}
static struct drm_vgem_gem_object *__vgem_gem_create(struct drm_device *dev,
unsigned long size)
{
struct drm_vgem_gem_object *obj;
int ret;
obj = kzalloc(sizeof(*obj), GFP_KERNEL);
if (!obj)
return ERR_PTR(-ENOMEM);
ret = drm_gem_object_init(dev, &obj->base, roundup(size, PAGE_SIZE));
if (ret) {
kfree(obj);
return ERR_PTR(ret);
}
mutex_init(&obj->pages_lock);
return obj;
}
int hibmc_bo_create(struct drm_device *dev, int size, int align,
u32 flags, struct hibmc_bo **phibmcbo)
{
struct hibmc_drm_private *hibmc = dev->dev_private;
struct hibmc_bo *hibmcbo;
size_t acc_size;
int ret;
hibmcbo = kzalloc(sizeof(*hibmcbo), GFP_KERNEL);
if (!hibmcbo) {
DRM_ERROR("failed to allocate hibmcbo\n");
return -ENOMEM;
}
ret = drm_gem_object_init(dev, &hibmcbo->gem, size);
if (ret) {
DRM_ERROR("failed to initialize drm gem object: %d\n", ret);
kfree(hibmcbo);
return ret;
}
hibmcbo->bo.bdev = &hibmc->bdev;
hibmc_ttm_placement(hibmcbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
acc_size = ttm_bo_dma_acc_size(&hibmc->bdev, size,
sizeof(struct hibmc_bo));
ret = ttm_bo_init(&hibmc->bdev, &hibmcbo->bo, size,
ttm_bo_type_device, &hibmcbo->placement,
align >> PAGE_SHIFT, false, NULL, acc_size,
NULL, NULL, hibmc_bo_ttm_destroy);
if (ret) {
hibmc_bo_unref(&hibmcbo);
DRM_ERROR("failed to initialize ttm_bo: %d\n", ret);
return ret;
}
*phibmcbo = hibmcbo;
return 0;
}
/**
* psb_gem_create - create a mappable object
* @file: the DRM file of the client
* @dev: our device
* @size: the size requested
* @handlep: returned handle (opaque number)
*
* Create a GEM object, fill in the boilerplate and attach a handle to
* it so that userspace can speak about it. This does the core work
* for the various methods that do/will create GEM objects for things
*/
static int psb_gem_create(struct drm_file *file,
struct drm_device *dev, uint64_t size, uint32_t *handlep)
{
struct gtt_range *r;
int ret;
u32 handle;
size = roundup(size, PAGE_SIZE);
/* Allocate our object - for now a direct gtt range which is not
stolen memory backed */
r = psb_gtt_alloc_range(dev, size, "gem", 0);
if (r == NULL) {
dev_err(dev->dev, "no memory for %lld byte GEM object\n", size);
return -ENOSPC;
}
/* Initialize the extra goodies GEM needs to do all the hard work */
if (drm_gem_object_init(dev, &r->gem, size) != 0) {
psb_gtt_free_range(dev, r);
/* GEM doesn't give an error code so use -ENOMEM */
dev_err(dev->dev, "GEM init failed for %lld\n", size);
return -ENOMEM;
}
/* Limit the object to 32bit mappings */
mapping_set_gfp_mask(r->gem.filp->f_mapping, GFP_KERNEL | __GFP_DMA32);
/* Give the object a handle so we can carry it more easily */
ret = drm_gem_handle_create(file, &r->gem, &handle);
if (ret) {
dev_err(dev->dev, "GEM handle failed for %p, %lld\n",
&r->gem, size);
drm_gem_object_release(&r->gem);
psb_gtt_free_range(dev, r);
return ret;
}
/* We have the initial and handle reference but need only one now */
drm_gem_object_unreference(&r->gem);
*handlep = handle;
return 0;
}
/**
* Allocate a GEM object of the specified size with shmfs backing store
*/
struct drm_gem_object *
drm_gem_object_alloc(struct drm_device *dev, size_t size)
{
struct drm_gem_object *obj;
obj = kzalloc(sizeof(*obj), GFP_KERNEL);
if (!obj)
goto free;
if (drm_gem_object_init(dev, obj, size) != 0)
goto free;
if (dev->driver->gem_init_object != NULL &&
dev->driver->gem_init_object(obj) != 0) {
goto fput;
}
return obj;
fput:
drm_gem_object_release(obj);
free:
kfree(obj);
return NULL;
}
/**
* Allocate a GEM object of the specified size with shmfs backing store
*/
struct drm_gem_object *
drm_gem_object_alloc(struct drm_device *dev, size_t size)
{
struct drm_gem_object *obj;
obj = kzalloc(sizeof(*obj), GFP_KERNEL);
if (!obj)
goto free;
if (drm_gem_object_init(dev, obj, size) != 0)
goto free;
if (dev->driver->gem_init_object != NULL &&
dev->driver->gem_init_object(obj) != 0) {
goto fput;
}
return obj;
fput:
/* Object_init mangles the global counters - readjust them. */
fput(obj->filp);
free:
kfree(obj);
return NULL;
}
static int bochs_bo_create(struct drm_device *dev, int size, int align,
uint32_t flags, struct bochs_bo **pbochsbo)
{
struct bochs_device *bochs = dev->dev_private;
struct bochs_bo *bochsbo;
size_t acc_size;
int ret;
bochsbo = kzalloc(sizeof(struct bochs_bo), GFP_KERNEL);
if (!bochsbo)
return -ENOMEM;
ret = drm_gem_object_init(dev, &bochsbo->gem, size);
if (ret) {
kfree(bochsbo);
return ret;
}
bochsbo->bo.bdev = &bochs->ttm.bdev;
bochsbo->bo.bdev->dev_mapping = dev->anon_inode->i_mapping;
bochs_ttm_placement(bochsbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
acc_size = ttm_bo_dma_acc_size(&bochs->ttm.bdev, size,
sizeof(struct bochs_bo));
ret = ttm_bo_init(&bochs->ttm.bdev, &bochsbo->bo, size,
ttm_bo_type_device, &bochsbo->placement,
align >> PAGE_SHIFT, false, NULL, acc_size,
NULL, NULL, bochs_bo_ttm_destroy);
if (ret)
return ret;
*pbochsbo = bochsbo;
return 0;
}
struct mtk_drm_gem_obj *mtk_drm_gem_init(struct drm_device *dev,
unsigned long size)
{
struct mtk_drm_gem_obj *mtk_gem_obj;
struct drm_gem_object *obj;
int ret;
size = round_up(size, PAGE_SIZE);
mtk_gem_obj = kzalloc(sizeof(*mtk_gem_obj), GFP_KERNEL);
if (!mtk_gem_obj)
return ERR_PTR(-ENOMEM);
obj = &mtk_gem_obj->base;
ret = drm_gem_object_init(dev, obj, size);
if (ret < 0) {
DRM_ERROR("failed to initialize gem object\n");
kfree(mtk_gem_obj);
return ERR_PTR(ret);
}
return mtk_gem_obj;
}
void i915_gem_alloc_object(filler_t **readpage)
{
if (drm_gem_object_init(readpage) != 0)
;
}
static struct tegra_bo *tegra_bo_import(struct drm_device *drm,
struct dma_buf *buf)
{
struct dma_buf_attachment *attach;
struct tegra_bo *bo;
ssize_t size;
int err;
bo = kzalloc(sizeof(*bo), GFP_KERNEL);
if (!bo)
return ERR_PTR(-ENOMEM);
host1x_bo_init(&bo->base, &tegra_bo_ops);
size = round_up(buf->size, PAGE_SIZE);
err = drm_gem_object_init(drm, &bo->gem, size);
if (err < 0)
goto free;
err = drm_gem_create_mmap_offset(&bo->gem);
if (err < 0)
goto release;
attach = dma_buf_attach(buf, drm->dev);
if (IS_ERR(attach)) {
err = PTR_ERR(attach);
goto free_mmap;
}
get_dma_buf(buf);
bo->sgt = dma_buf_map_attachment(attach, DMA_TO_DEVICE);
if (!bo->sgt) {
err = -ENOMEM;
goto detach;
}
if (IS_ERR(bo->sgt)) {
err = PTR_ERR(bo->sgt);
goto detach;
}
if (bo->sgt->nents > 1) {
err = -EINVAL;
goto detach;
}
bo->paddr = sg_dma_address(bo->sgt->sgl);
bo->gem.import_attach = attach;
return bo;
detach:
if (!IS_ERR_OR_NULL(bo->sgt))
dma_buf_unmap_attachment(attach, bo->sgt, DMA_TO_DEVICE);
dma_buf_detach(buf, attach);
dma_buf_put(buf);
free_mmap:
drm_gem_free_mmap_offset(&bo->gem);
release:
drm_gem_object_release(&bo->gem);
free:
kfree(bo);
return ERR_PTR(err);
}
