checkpoint: rename to GEM and a few more i915 bits.

1 files changed, 0 insertions, 359 deletions

diff --git a/linux-core/drm_mm.c b/linux-core/drm_mm.c
deleted file mode 100644
index 7e9fe39c..00000000
--- a/linux-core/drm_mm.c
+++ /dev/null
@@ -1,359 +0,0 @@
-/*
- * Copyright © 2008 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- *
- * Authors:
- *    Eric Anholt <eric@anholt.net>
- *
- */
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/uaccess.h>
-#include <linux/fs.h>
-#include <linux/file.h>
-#include <linux/module.h>
-#include <linux/mman.h>
-#include <linux/pagemap.h>
-#include "drmP.h"
-
-/** @file drm_mm.c
- *
- * This file provides some of the base ioctls and library routines for
- * the graphics memory manager implemented by each device driver.
- *
- * Because various devices have different requirements in terms of
- * synchronization and migration strategies, implementing that is left up to
- * the driver, and all that the general API provides should be generic --
- * allocating objects, reading/writing data with the cpu, freeing objects.
- * Even there, platform-dependent optimizations for reading/writing data with
- * the CPU mean we'll likely hook those out to driver-specific calls.  However,
- * the DRI2 implementation wants to have at least allocate/mmap be generic.
- *
- * The goal was to have swap-backed object allocation managed through
- * struct file.  However, file descriptors as handles to a struct file have
- * two major failings:
- * - Process limits prevent more than 1024 or so being used at a time by
- *   default.
- * - Inability to allocate high fds will aggravate the X Server's select()
- *   handling, and likely that of many GL client applications as well.
- *
- * This led to a plan of using our own integer IDs (called handles, following
- * DRM terminology) to mimic fds, and implement the fd syscalls we need as
- * ioctls.  The objects themselves will still include the struct file so
- * that we can transition to fds if the required kernel infrastructure shows
- * up at a later data, and as our interface with shmfs for memory allocation.
- */
-
-static struct drm_mm_object *
-drm_mm_object_alloc(size_t size)
-{
-	struct drm_mm_object *obj;
-
-	BUG_ON((size & (PAGE_SIZE - 1)) != 0);
-
-	obj = kcalloc(1, sizeof(*obj), GFP_KERNEL);
-
-	obj->filp = shmem_file_setup("drm mm object", size, 0);
-	if (IS_ERR(obj->filp)) {
-		kfree(obj);
-		return NULL;
-	}
-
-	obj->refcount = 1;
-
-	return obj;
-}
-
-/**
- * Removes the mapping from handle to filp for this object.
- */
-static int
-drm_mm_handle_delete(struct drm_file *filp, int handle)
-{
-	struct drm_mm_object *obj;
-
-	/* This is gross. The idr system doesn't let us try a delete and
-	 * return an error code.  It just spews if you fail at deleting.
-	 * So, we have to grab a lock around finding the object and then
-	 * doing the delete on it and dropping the refcount, or the user
-	 * could race us to double-decrement the refcount and cause a
-	 * use-after-free later.  Given the frequency of our handle lookups,
-	 * we may want to use ida for number allocation and a hash table
-	 * for the pointers, anyway.
-	 */
-	spin_lock(&filp->table_lock);
-
-	/* Check if we currently have a reference on the object */
-	obj = idr_find(&filp->object_idr, handle);
-	if (obj == NULL) {
-		spin_unlock(&filp->table_lock);
-		return -EINVAL;
-	}
-
-	/* Release reference and decrement refcount. */
-	idr_remove(&filp->object_idr, handle);
-	drm_mm_object_unreference(obj);
-
-	spin_unlock(&filp->table_lock);
-
-	return 0;
-}
-
-/** Returns a reference to the object named by the handle. */
-static struct drm_mm_object *
-drm_mm_object_lookup(struct drm_file *filp, int handle)
-{
-	struct drm_mm_object *obj;
-
-	spin_lock(&filp->table_lock);
-
-	/* Check if we currently have a reference on the object */
-	obj = idr_find(&filp->object_idr, handle);
-	if (obj == NULL) {
-		spin_unlock(&filp->table_lock);
-		return NULL;
-	}
-
-	drm_mm_object_reference(obj);
-
-	spin_unlock(&filp->table_lock);
-
-	return obj;
-}
-
-
-/**
- * Allocates a new mm object and returns a handle to it.
- */
-int
-drm_mm_alloc_ioctl(struct drm_device *dev, void *data,
-		   struct drm_file *file_priv)
-{
-	struct drm_mm_alloc_args *args = data;
-	struct drm_mm_object *obj;
-	int handle, ret;
-
-	/* Round requested size up to page size */
-	args->size = (args->size + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
-
-	/* Allocate the new object */
-	obj = drm_mm_object_alloc(args->size);
-	if (obj == NULL)
-		return -ENOMEM;
-
-	/* Get the user-visible handle using idr.
-	 *
-	 * I'm not really sure why the idr api needs us to do this in two
-	 * repeating steps.  It handles internal locking of its data
-	 * structure, yet insists that we keep its memory allocation step
-	 * separate from its slot-finding step for locking purposes.
-	 */
-	do {
-		if (idr_pre_get(&file_priv->object_idr, GFP_KERNEL) == 0) {
-			kfree(obj);
-			return -EFAULT;
-		}
-
-		ret = idr_get_new(&file_priv->object_idr, obj, &handle);
-	} while (ret == -EAGAIN);
-
-	if (ret != 0) {
-		drm_mm_object_unreference(obj);
-		return -EFAULT;
-	}
-
-	args->handle = handle;
-
-	return 0;
-}
-
-/**
- * Releases the handle to an mm object.
- */
-int
-drm_mm_unreference_ioctl(struct drm_device *dev, void *data,
-			 struct drm_file *file_priv)
-{
-	struct drm_mm_unreference_args *args = data;
-	int ret;
-
-	ret = drm_mm_handle_delete(file_priv, args->handle);
-
-	return ret;
-}
-
-/**
- * Reads data from the object referenced by handle.
- *
- * On error, the contents of *data are undefined.
- */
-int
-drm_mm_pread_ioctl(struct drm_device *dev, void *data,
-		   struct drm_file *file_priv)
-{
-	struct drm_mm_pread_args *args = data;
-	struct drm_mm_object *obj;
-	ssize_t read;
-	loff_t offset;
-
-	obj = drm_mm_object_lookup(file_priv, args->handle);
-	if (obj == NULL)
-		return -EINVAL;
-
-	offset = args->offset;
-
-	read = obj->filp->f_op->read(obj->filp, (char __user *)args->data,
-				     args->size, &offset);
-	if (read != args->size) {
-		drm_mm_object_unreference(obj);
-		if (read < 0)
-			return read;
-		else
-			return -EINVAL;
-	}
-
-	drm_mm_object_unreference(obj);
-
-	return 0;
-}
-
-/**
- * Maps the contents of an object, returning the address it is mapped
- * into.
- *
- * While the mapping holds a reference on the contents of the object, it doesn't
- * imply a ref on the object itself.
- */
-int
-drm_mm_mmap_ioctl(struct drm_device *dev, void *data,
-		  struct drm_file *file_priv)
-{
-	struct drm_mm_mmap_args *args = data;
-	struct drm_mm_object *obj;
-	loff_t offset;
-
-	obj = drm_mm_object_lookup(file_priv, args->handle);
-	if (obj == NULL)
-		return -EINVAL;
-
-	offset = args->offset;
-
-	down_write(&current->mm->mmap_sem);
-	args->addr = (void *)do_mmap(obj->filp, 0, args->size,
-				    PROT_READ | PROT_WRITE, MAP_SHARED,
-				    args->offset);
-	up_write(&current->mm->mmap_sem);
-
-	drm_mm_object_unreference(obj);
-
-	return 0;
-}
-
-/**
- * Writes data to the object referenced by handle.
- *
- * On error, the contents of the buffer that were to be modified are undefined.
- */
-int
-drm_mm_pwrite_ioctl(struct drm_device *dev, void *data,
-		    struct drm_file *file_priv)
-{
-	struct drm_mm_pwrite_args *args = data;
-	struct drm_mm_object *obj;
-	ssize_t written;
-	loff_t offset;
-
-	obj = drm_mm_object_lookup(file_priv, args->handle);
-	if (obj == NULL)
-		return -EINVAL;
-
-	offset = args->offset;
-
-	written = obj->filp->f_op->write(obj->filp, (char __user *)args->data,
-					 args->size, &offset);
-	if (written != args->size) {
-		drm_mm_object_unreference(obj);
-		if (written < 0)
-			return written;
-		else
-			return -EINVAL;
-	}
-
-	drm_mm_object_unreference(obj);
-
-	return 0;
-}
-
-/**
- * Called at device open time, sets up the structure for handling refcounting
- * of mm objects.
- */
-void
-drm_mm_open(struct drm_file *file_private)
-{
-	idr_init(&file_private->object_idr);
-}
-
-/** Called at device close to release the file's references on objects. */
-static int
-drm_mm_object_release(int id, void *ptr, void *data)
-{
-	struct drm_mm_object *obj = ptr;
-
-	drm_mm_object_unreference(obj);
-
-	return 0;
-}
-
-/**
- * Called at close time when the filp is going away.
- *
- * Releases any remaining references on objects by this filp.
- */
-void
-drm_mm_release(struct drm_file *file_private)
-{
-	idr_for_each(&file_private->object_idr, &drm_mm_object_release, NULL);
-
-	idr_destroy(&file_private->object_idr);
-}
-
-void
-drm_mm_object_reference(struct drm_mm_object *obj)
-{
-	spin_lock(&obj->lock);
-	obj->refcount++;
-	spin_unlock(&obj->lock);
-}
-
-void
-drm_mm_object_unreference(struct drm_mm_object *obj)
-{
-	spin_lock(&obj->lock);
-	obj->refcount--;
-	spin_unlock(&obj->lock);
-	if (obj->refcount == 0) {
-		fput(obj->filp);
-		kfree(obj);
-	}
-}