diff options
Diffstat (limited to 'drivers/gpu/drm/udl/udl_gem.c')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_gem.c | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/drivers/gpu/drm/udl/udl_gem.c b/drivers/gpu/drm/udl/udl_gem.c deleted file mode 100644 index d5a23295dd80..000000000000 --- a/drivers/gpu/drm/udl/udl_gem.c +++ /dev/null @@ -1,231 +0,0 @@ -/* - * Copyright (C) 2012 Red Hat - * - * This file is subject to the terms and conditions of the GNU General Public - * License v2. See the file COPYING in the main directory of this archive for - * more details. - */ - -#include <drm/drmP.h> -#include "udl_drv.h" -#include <linux/shmem_fs.h> -#include <linux/dma-buf.h> - -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; - } - - obj->flags = UDL_BO_CACHEABLE; - return obj; -} - -static int -udl_gem_create(struct drm_file *file, - struct drm_device *dev, - uint64_t size, - uint32_t *handle_p) -{ - struct udl_gem_object *obj; - int ret; - u32 handle; - - size = roundup(size, PAGE_SIZE); - - obj = udl_gem_alloc_object(dev, size); - if (obj == NULL) - return -ENOMEM; - - ret = drm_gem_handle_create(file, &obj->base, &handle); - if (ret) { - drm_gem_object_release(&obj->base); - kfree(obj); - return ret; - } - - drm_gem_object_put_unlocked(&obj->base); - *handle_p = handle; - return 0; -} - -static void update_vm_cache_attr(struct udl_gem_object *obj, - struct vm_area_struct *vma) -{ - DRM_DEBUG_KMS("flags = 0x%x\n", obj->flags); - - /* non-cacheable as default. */ - if (obj->flags & UDL_BO_CACHEABLE) { - vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); - } else if (obj->flags & UDL_BO_WC) { - vma->vm_page_prot = - pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); - } else { - vma->vm_page_prot = - pgprot_noncached(vm_get_page_prot(vma->vm_flags)); - } -} - -int udl_dumb_create(struct drm_file *file, - struct drm_device *dev, - struct drm_mode_create_dumb *args) -{ - args->pitch = args->width * DIV_ROUND_UP(args->bpp, 8); - args->size = args->pitch * args->height; - return udl_gem_create(file, dev, - args->size, &args->handle); -} - -int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) -{ - int ret; - - ret = drm_gem_mmap(filp, vma); - if (ret) - return ret; - - vma->vm_flags &= ~VM_PFNMAP; - vma->vm_flags |= VM_MIXEDMAP; - - update_vm_cache_attr(to_udl_bo(vma->vm_private_data), vma); - - return ret; -} - -vm_fault_t udl_gem_fault(struct vm_fault *vmf) -{ - struct vm_area_struct *vma = vmf->vma; - struct udl_gem_object *obj = to_udl_bo(vma->vm_private_data); - struct page *page; - unsigned int page_offset; - - page_offset = (vmf->address - vma->vm_start) >> PAGE_SHIFT; - - if (!obj->pages) - return VM_FAULT_SIGBUS; - - page = obj->pages[page_offset]; - return vmf_insert_page(vma, vmf->address, page); -} - -int udl_gem_get_pages(struct udl_gem_object *obj) -{ - struct page **pages; - - if (obj->pages) - return 0; - - pages = drm_gem_get_pages(&obj->base); - if (IS_ERR(pages)) - return PTR_ERR(pages); - - obj->pages = pages; - - return 0; -} - -void udl_gem_put_pages(struct udl_gem_object *obj) -{ - if (obj->base.import_attach) { - kvfree(obj->pages); - obj->pages = NULL; - return; - } - - drm_gem_put_pages(&obj->base, obj->pages, false, false); - obj->pages = NULL; -} - -int udl_gem_vmap(struct udl_gem_object *obj) -{ - int page_count = obj->base.size / PAGE_SIZE; - int ret; - - if (obj->base.import_attach) { - obj->vmapping = dma_buf_vmap(obj->base.import_attach->dmabuf); - if (!obj->vmapping) - return -ENOMEM; - return 0; - } - - ret = udl_gem_get_pages(obj); - if (ret) - return ret; - - obj->vmapping = vmap(obj->pages, page_count, 0, PAGE_KERNEL); - if (!obj->vmapping) - return -ENOMEM; - return 0; -} - -void udl_gem_vunmap(struct udl_gem_object *obj) -{ - if (obj->base.import_attach) { - dma_buf_vunmap(obj->base.import_attach->dmabuf, obj->vmapping); - return; - } - - vunmap(obj->vmapping); - - udl_gem_put_pages(obj); -} - -void udl_gem_free_object(struct drm_gem_object *gem_obj) -{ - struct udl_gem_object *obj = to_udl_bo(gem_obj); - - if (obj->vmapping) - udl_gem_vunmap(obj); - - if (gem_obj->import_attach) { - drm_prime_gem_destroy(gem_obj, obj->sg); - put_device(gem_obj->dev->dev); - } - - if (obj->pages) - udl_gem_put_pages(obj); - - drm_gem_free_mmap_offset(gem_obj); -} - -/* the dumb interface doesn't work with the GEM straight MMAP - interface, it expects to do MMAP on the drm fd, like normal */ -int udl_gem_mmap(struct drm_file *file, struct drm_device *dev, - uint32_t handle, uint64_t *offset) -{ - struct udl_gem_object *gobj; - struct drm_gem_object *obj; - struct udl_device *udl = dev->dev_private; - int ret = 0; - - mutex_lock(&udl->gem_lock); - obj = drm_gem_object_lookup(file, handle); - if (obj == NULL) { - ret = -ENOENT; - goto unlock; - } - gobj = to_udl_bo(obj); - - ret = udl_gem_get_pages(gobj); - if (ret) - goto out; - ret = drm_gem_create_mmap_offset(obj); - if (ret) - goto out; - - *offset = drm_vma_node_offset_addr(&gobj->base.vma_node); - -out: - drm_gem_object_put(&gobj->base); -unlock: - mutex_unlock(&udl->gem_lock); - return ret; -} |