1 files changed, 0 insertions, 397 deletions
diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c
deleted file mode 100644
index ece72a8ac245..000000000000
--- a/drivers/gpu/drm/drm_gem_cma_helper.c
+++ /dev/null
@@ -1,397 +0,0 @@
-/*
- * drm gem CMA (contiguous memory allocator) helper functions
- *
- * Copyright (C) 2012 Sascha Hauer, Pengutronix
- *
- * Based on Samsung Exynos code
- *
- * Copyright (c) 2011 Samsung Electronics Co., Ltd.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <linux/export.h>
-#include <linux/dma-buf.h>
-#include <linux/dma-mapping.h>
-
-#include <drm/drmP.h>
-#include <drm/drm.h>
-#include <drm/drm_gem_cma_helper.h>
-
-static unsigned int get_gem_mmap_offset(struct drm_gem_object *obj)
-{
-	return (unsigned int)obj->map_list.hash.key << PAGE_SHIFT;
-}
-
-/*
- * __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);
-}
-
-/*
- * 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 sg_table *sgt = NULL;
-	int ret;
-
-	size = round_up(size, PAGE_SIZE);
-
-	cma_obj = __drm_gem_cma_create(drm, size);
-	if (IS_ERR(cma_obj))
-		return cma_obj;
-
-	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 error;
-	}
-
-	sgt = kzalloc(sizeof(*cma_obj->sgt), GFP_KERNEL);
-	if (sgt == NULL) {
-		ret = -ENOMEM;
-		goto error;
-	}
-
-	ret = dma_get_sgtable(drm->dev, sgt, cma_obj->vaddr,
-			      cma_obj->paddr, size);
-	if (ret < 0)
-		goto error;
-
-	cma_obj->sgt = sgt;
-
-	return cma_obj;
-
-error:
-	kfree(sgt);
-	drm_gem_cma_free_object(&cma_obj->base);
-	return ERR_PTR(ret);
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_create);
-
-/*
- * drm_gem_cma_create_with_handle - allocate an object with the given
- * size and create a gem handle on it
- *
- * returns a struct drm_gem_cma_object* on success or ERR_PTR values
- * on failure.
- */
-static struct drm_gem_cma_object *drm_gem_cma_create_with_handle(
-		struct drm_file *file_priv,
-		struct drm_device *drm, unsigned int size,
-		unsigned int *handle)
-{
-	struct drm_gem_cma_object *cma_obj;
-	struct drm_gem_object *gem_obj;
-	int ret;
-
-	cma_obj = drm_gem_cma_create(drm, size);
-	if (IS_ERR(cma_obj))
-		return cma_obj;
-
-	gem_obj = &cma_obj->base;
-
-	/*
-	 * allocate a id of idr table where the obj is registered
-	 * and handle has the id what user can see.
-	 */
-	ret = drm_gem_handle_create(file_priv, gem_obj, handle);
-	if (ret)
-		goto err_handle_create;
-
-	/* drop reference from allocate - handle holds it now. */
-	drm_gem_object_unreference_unlocked(gem_obj);
-
-	return cma_obj;
-
-err_handle_create:
-	drm_gem_cma_free_object(gem_obj);
-
-	return ERR_PTR(ret);
-}
-
-/*
- * drm_gem_cma_free_object - (struct drm_driver)->gem_free_object callback
- * function
- */
-void drm_gem_cma_free_object(struct drm_gem_object *gem_obj)
-{
-	struct drm_gem_cma_object *cma_obj;
-
-	if (gem_obj->map_list.map)
-		drm_gem_free_mmap_offset(gem_obj);
-
-	cma_obj = to_drm_gem_cma_obj(gem_obj);
-
-	if (cma_obj->vaddr) {
-		dma_free_writecombine(gem_obj->dev->dev, cma_obj->base.size,
-				      cma_obj->vaddr, cma_obj->paddr);
-		if (cma_obj->sgt) {
-			sg_free_table(cma_obj->sgt);
-			kfree(cma_obj->sgt);
-		}
-	} else if (gem_obj->import_attach) {
-		drm_prime_gem_destroy(gem_obj, cma_obj->sgt);
-	}
-
-	drm_gem_object_release(gem_obj);
-
-	kfree(cma_obj);
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_free_object);
-
-/*
- * drm_gem_cma_dumb_create - (struct drm_driver)->dumb_create callback
- * function
- *
- * This aligns the pitch and size arguments to the minimum required. wrap
- * this into your own function if you need bigger alignment.
- */
-int drm_gem_cma_dumb_create(struct drm_file *file_priv,
-		struct drm_device *dev, struct drm_mode_create_dumb *args)
-{
-	struct drm_gem_cma_object *cma_obj;
-	int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
-
-	if (args->pitch < min_pitch)
-		args->pitch = min_pitch;
-
-	if (args->size < args->pitch * args->height)
-		args->size = args->pitch * args->height;
-
-	cma_obj = drm_gem_cma_create_with_handle(file_priv, dev,
-			args->size, &args->handle);
-	return PTR_RET(cma_obj);
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_create);
-
-/*
- * drm_gem_cma_dumb_map_offset - (struct drm_driver)->dumb_map_offset callback
- * function
- */
-int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv,
-		struct drm_device *drm, uint32_t handle, uint64_t *offset)
-{
-	struct drm_gem_object *gem_obj;
-
-	mutex_lock(&drm->struct_mutex);
-
-	gem_obj = drm_gem_object_lookup(drm, file_priv, handle);
-	if (!gem_obj) {
-		dev_err(drm->dev, "failed to lookup gem object\n");
-		mutex_unlock(&drm->struct_mutex);
-		return -EINVAL;
-	}
-
-	*offset = get_gem_mmap_offset(gem_obj);
-
-	drm_gem_object_unreference(gem_obj);
-
-	mutex_unlock(&drm->struct_mutex);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_map_offset);
-
-const struct vm_operations_struct drm_gem_cma_vm_ops = {
-	.open = drm_gem_vm_open,
-	.close = drm_gem_vm_close,
-};
-EXPORT_SYMBOL_GPL(drm_gem_cma_vm_ops);
-
-static int drm_gem_cma_mmap_obj(struct drm_gem_cma_object *cma_obj,
-				struct vm_area_struct *vma)
-{
-	int ret;
-
-	ret = remap_pfn_range(vma, vma->vm_start, cma_obj->paddr >> PAGE_SHIFT,
-			vma->vm_end - vma->vm_start, vma->vm_page_prot);
-	if (ret)
-		drm_gem_vm_close(vma);
-
-	return ret;
-}
-
-/*
- * drm_gem_cma_mmap - (struct file_operation)->mmap callback function
- */
-int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma)
-{
-	struct drm_gem_cma_object *cma_obj;
-	struct drm_gem_object *gem_obj;
-	int ret;
-
-	ret = drm_gem_mmap(filp, vma);
-	if (ret)
-		return ret;
-
-	gem_obj = vma->vm_private_data;
-	cma_obj = to_drm_gem_cma_obj(gem_obj);
-
-	return drm_gem_cma_mmap_obj(cma_obj, vma);
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_mmap);
-
-/*
- * drm_gem_cma_dumb_destroy - (struct drm_driver)->dumb_destroy callback function
- */
-int drm_gem_cma_dumb_destroy(struct drm_file *file_priv,
-		struct drm_device *drm, unsigned int handle)
-{
-	return drm_gem_handle_delete(file_priv, handle);
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_dumb_destroy);
-
-#ifdef CONFIG_DEBUG_FS
-void drm_gem_cma_describe(struct drm_gem_cma_object *cma_obj, struct seq_file *m)
-{
-	struct drm_gem_object *obj = &cma_obj->base;
-	struct drm_device *dev = obj->dev;
-	uint64_t off = 0;
-
-	WARN_ON(!mutex_is_locked(&dev->struct_mutex));
-
-	if (obj->map_list.map)
-		off = (uint64_t)obj->map_list.hash.key;
-
-	seq_printf(m, "%2d (%2d) %08llx %08Zx %p %d",
-			obj->name, obj->refcount.refcount.counter,
-			off, cma_obj->paddr, cma_obj->vaddr, obj->size);
-
-	seq_printf(m, "\n");
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_describe);
-#endif
-
-/* low-level interface prime helpers */
-struct sg_table *drm_gem_cma_prime_get_sg_table(struct drm_gem_object *obj)
-{
-	struct drm_gem_cma_object *cma_obj = to_drm_gem_cma_obj(obj);
-	struct sg_table *sgt;
-	int ret;
-
-	sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
-	if (!sgt)
-		return NULL;
-
-	ret = dma_get_sgtable(obj->dev->dev, sgt, cma_obj->vaddr,
-			      cma_obj->paddr, obj->size);
-	if (ret < 0)
-		goto out;
-
-	return sgt;
-
-out:
-	kfree(sgt);
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_prime_get_sg_table);
-
-struct drm_gem_object *
-drm_gem_cma_prime_import_sg_table(struct drm_device *dev, size_t size,
-				  struct sg_table *sgt)
-{
-	struct drm_gem_cma_object *cma_obj;
-
-	if (sgt->nents != 1)
-		return ERR_PTR(-EINVAL);
-
-	/* Create a CMA GEM buffer. */
-	cma_obj = __drm_gem_cma_create(dev, size);
-	if (IS_ERR(cma_obj))
-		return ERR_PTR(PTR_ERR(cma_obj));
-
-	cma_obj->paddr = sg_dma_address(sgt->sgl);
-	cma_obj->sgt = sgt;
-
-	DRM_DEBUG_PRIME("dma_addr = 0x%x, size = %zu\n", cma_obj->paddr, size);
-
-	return &cma_obj->base;
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_prime_import_sg_table);
-
-int drm_gem_cma_prime_mmap(struct drm_gem_object *obj,
-			   struct vm_area_struct *vma)
-{
-	struct drm_gem_cma_object *cma_obj;
-	struct drm_device *dev = obj->dev;
-	int ret;
-
-	mutex_lock(&dev->struct_mutex);
-	ret = drm_gem_mmap_obj(obj, obj->size, vma);
-	mutex_unlock(&dev->struct_mutex);
-	if (ret < 0)
-		return ret;
-
-	cma_obj = to_drm_gem_cma_obj(obj);
-	return drm_gem_cma_mmap_obj(cma_obj, vma);
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_prime_mmap);
-
-void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj)
-{
-	struct drm_gem_cma_object *cma_obj = to_drm_gem_cma_obj(obj);
-
-	return cma_obj->vaddr;
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vmap);
-
-void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
-{
-	/* Nothing to do */
-}
-EXPORT_SYMBOL_GPL(drm_gem_cma_prime_vunmap);