1 files changed, 0 insertions, 248 deletions

diff --git a/drivers/gpu/drm/vkms/vkms_gem.c b/drivers/gpu/drm/vkms/vkms_gem.c
deleted file mode 100644
index a017fc59905e..000000000000
--- a/drivers/gpu/drm/vkms/vkms_gem.c
+++ /dev/null
@@ -1,248 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-
-#include <linux/dma-buf.h>
-#include <linux/shmem_fs.h>
-#include <linux/vmalloc.h>
-#include <drm/drm_prime.h>
-
-#include "vkms_drv.h"
-
-static struct vkms_gem_object *__vkms_gem_create(struct drm_device *dev,
-						 u64 size)
-{
-	struct vkms_gem_object *obj;
-	int ret;
-
-	obj = kzalloc(sizeof(*obj), GFP_KERNEL);
-	if (!obj)
-		return ERR_PTR(-ENOMEM);
-
-	size = roundup(size, PAGE_SIZE);
-	ret = drm_gem_object_init(dev, &obj->gem, size);
-	if (ret) {
-		kfree(obj);
-		return ERR_PTR(ret);
-	}
-
-	mutex_init(&obj->pages_lock);
-
-	return obj;
-}
-
-void vkms_gem_free_object(struct drm_gem_object *obj)
-{
-	struct vkms_gem_object *gem = container_of(obj, struct vkms_gem_object,
-						   gem);
-
-	WARN_ON(gem->pages);
-	WARN_ON(gem->vaddr);
-
-	mutex_destroy(&gem->pages_lock);
-	drm_gem_object_release(obj);
-	kfree(gem);
-}
-
-vm_fault_t vkms_gem_fault(struct vm_fault *vmf)
-{
-	struct vm_area_struct *vma = vmf->vma;
-	struct vkms_gem_object *obj = vma->vm_private_data;
-	unsigned long vaddr = vmf->address;
-	pgoff_t page_offset;
-	loff_t num_pages;
-	vm_fault_t ret = VM_FAULT_SIGBUS;
-
-	page_offset = (vaddr - vma->vm_start) >> PAGE_SHIFT;
-	num_pages = DIV_ROUND_UP(obj->gem.size, PAGE_SIZE);
-
-	if (page_offset > num_pages)
-		return VM_FAULT_SIGBUS;
-
-	mutex_lock(&obj->pages_lock);
-	if (obj->pages) {
-		get_page(obj->pages[page_offset]);
-		vmf->page = obj->pages[page_offset];
-		ret = 0;
-	}
-	mutex_unlock(&obj->pages_lock);
-	if (ret) {
-		struct page *page;
-		struct address_space *mapping;
-
-		mapping = file_inode(obj->gem.filp)->i_mapping;
-		page = shmem_read_mapping_page(mapping, page_offset);
-
-		if (!IS_ERR(page)) {
-			vmf->page = page;
-			ret = 0;
-		} else {
-			switch (PTR_ERR(page)) {
-			case -ENOSPC:
-			case -ENOMEM:
-				ret = VM_FAULT_OOM;
-				break;
-			case -EBUSY:
-				ret = VM_FAULT_RETRY;
-				break;
-			case -EFAULT:
-			case -EINVAL:
-				ret = VM_FAULT_SIGBUS;
-				break;
-			default:
-				WARN_ON(PTR_ERR(page));
-				ret = VM_FAULT_SIGBUS;
-				break;
-			}
-		}
-	}
-	return ret;
-}
-
-static struct drm_gem_object *vkms_gem_create(struct drm_device *dev,
-					      struct drm_file *file,
-					      u32 *handle,
-					      u64 size)
-{
-	struct vkms_gem_object *obj;
-	int ret;
-
-	if (!file || !dev || !handle)
-		return ERR_PTR(-EINVAL);
-
-	obj = __vkms_gem_create(dev, size);
-	if (IS_ERR(obj))
-		return ERR_CAST(obj);
-
-	ret = drm_gem_handle_create(file, &obj->gem, handle);
-	if (ret)
-		return ERR_PTR(ret);
-
-	return &obj->gem;
-}
-
-int vkms_dumb_create(struct drm_file *file, struct drm_device *dev,
-		     struct drm_mode_create_dumb *args)
-{
-	struct drm_gem_object *gem_obj;
-	u64 pitch, size;
-
-	if (!args || !dev || !file)
-		return -EINVAL;
-
-	pitch = args->width * DIV_ROUND_UP(args->bpp, 8);
-	size = pitch * args->height;
-
-	if (!size)
-		return -EINVAL;
-
-	gem_obj = vkms_gem_create(dev, file, &args->handle, size);
-	if (IS_ERR(gem_obj))
-		return PTR_ERR(gem_obj);
-
-	args->size = gem_obj->size;
-	args->pitch = pitch;
-
-	drm_gem_object_put(gem_obj);
-
-	DRM_DEBUG_DRIVER("Created object of size %lld\n", size);
-
-	return 0;
-}
-
-static struct page **_get_pages(struct vkms_gem_object *vkms_obj)
-{
-	struct drm_gem_object *gem_obj = &vkms_obj->gem;
-
-	if (!vkms_obj->pages) {
-		struct page **pages = drm_gem_get_pages(gem_obj);
-
-		if (IS_ERR(pages))
-			return pages;
-
-		if (cmpxchg(&vkms_obj->pages, NULL, pages))
-			drm_gem_put_pages(gem_obj, pages, false, true);
-	}
-
-	return vkms_obj->pages;
-}
-
-void vkms_gem_vunmap(struct drm_gem_object *obj)
-{
-	struct vkms_gem_object *vkms_obj = drm_gem_to_vkms_gem(obj);
-
-	mutex_lock(&vkms_obj->pages_lock);
-	if (vkms_obj->vmap_count < 1) {
-		WARN_ON(vkms_obj->vaddr);
-		WARN_ON(vkms_obj->pages);
-		mutex_unlock(&vkms_obj->pages_lock);
-		return;
-	}
-
-	vkms_obj->vmap_count--;
-
-	if (vkms_obj->vmap_count == 0) {
-		vunmap(vkms_obj->vaddr);
-		vkms_obj->vaddr = NULL;
-		drm_gem_put_pages(obj, vkms_obj->pages, false, true);
-		vkms_obj->pages = NULL;
-	}
-
-	mutex_unlock(&vkms_obj->pages_lock);
-}
-
-int vkms_gem_vmap(struct drm_gem_object *obj)
-{
-	struct vkms_gem_object *vkms_obj = drm_gem_to_vkms_gem(obj);
-	int ret = 0;
-
-	mutex_lock(&vkms_obj->pages_lock);
-
-	if (!vkms_obj->vaddr) {
-		unsigned int n_pages = obj->size >> PAGE_SHIFT;
-		struct page **pages = _get_pages(vkms_obj);
-
-		if (IS_ERR(pages)) {
-			ret = PTR_ERR(pages);
-			goto out;
-		}
-
-		vkms_obj->vaddr = vmap(pages, n_pages, VM_MAP, PAGE_KERNEL);
-		if (!vkms_obj->vaddr)
-			goto err_vmap;
-	}
-
-	vkms_obj->vmap_count++;
-	goto out;
-
-err_vmap:
-	ret = -ENOMEM;
-	drm_gem_put_pages(obj, vkms_obj->pages, false, true);
-	vkms_obj->pages = NULL;
-out:
-	mutex_unlock(&vkms_obj->pages_lock);
-	return ret;
-}
-
-struct drm_gem_object *
-vkms_prime_import_sg_table(struct drm_device *dev,
-			   struct dma_buf_attachment *attach,
-			   struct sg_table *sg)
-{
-	struct vkms_gem_object *obj;
-	int npages;
-
-	obj = __vkms_gem_create(dev, attach->dmabuf->size);
-	if (IS_ERR(obj))
-		return ERR_CAST(obj);
-
-	npages = PAGE_ALIGN(attach->dmabuf->size) / PAGE_SIZE;
-	DRM_DEBUG_PRIME("Importing %d pages\n", npages);
-
-	obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
-	if (!obj->pages) {
-		vkms_gem_free_object(&obj->gem);
-		return ERR_PTR(-ENOMEM);
-	}
-
-	drm_prime_sg_to_page_addr_arrays(sg, obj->pages, NULL, npages);
-	return &obj->gem;
-}