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-rw-r--r--ANDROID_3.4.5/drivers/gpu/ion/Kconfig13
-rw-r--r--ANDROID_3.4.5/drivers/gpu/ion/Makefile3
-rw-r--r--ANDROID_3.4.5/drivers/gpu/ion/ion.c1358
-rw-r--r--ANDROID_3.4.5/drivers/gpu/ion/ion_carveout_heap.c182
-rw-r--r--ANDROID_3.4.5/drivers/gpu/ion/ion_heap.c72
-rw-r--r--ANDROID_3.4.5/drivers/gpu/ion/ion_page_pool.c281
-rw-r--r--ANDROID_3.4.5/drivers/gpu/ion/ion_priv.h257
-rw-r--r--ANDROID_3.4.5/drivers/gpu/ion/ion_system_heap.c492
-rw-r--r--ANDROID_3.4.5/drivers/gpu/ion/ion_system_mapper.c114
-rw-r--r--ANDROID_3.4.5/drivers/gpu/ion/tegra/Makefile1
-rw-r--r--ANDROID_3.4.5/drivers/gpu/ion/tegra/tegra_ion.c96
11 files changed, 0 insertions, 2869 deletions
diff --git a/ANDROID_3.4.5/drivers/gpu/ion/Kconfig b/ANDROID_3.4.5/drivers/gpu/ion/Kconfig
deleted file mode 100644
index b5bfdb47..00000000
--- a/ANDROID_3.4.5/drivers/gpu/ion/Kconfig
+++ /dev/null
@@ -1,13 +0,0 @@
-menuconfig ION
- tristate "Ion Memory Manager"
- select GENERIC_ALLOCATOR
- select DMA_SHARED_BUFFER
- help
- Chose this option to enable the ION Memory Manager.
-
-config ION_TEGRA
- tristate "Ion for Tegra"
- depends on ARCH_TEGRA && ION
- help
- Choose this option if you wish to use ion on an nVidia Tegra.
-
diff --git a/ANDROID_3.4.5/drivers/gpu/ion/Makefile b/ANDROID_3.4.5/drivers/gpu/ion/Makefile
deleted file mode 100644
index d1ddebb7..00000000
--- a/ANDROID_3.4.5/drivers/gpu/ion/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-obj-$(CONFIG_ION) += ion.o ion_heap.o ion_page_pool.o ion_system_heap.o \
- ion_carveout_heap.o
-obj-$(CONFIG_ION_TEGRA) += tegra/
diff --git a/ANDROID_3.4.5/drivers/gpu/ion/ion.c b/ANDROID_3.4.5/drivers/gpu/ion/ion.c
deleted file mode 100644
index 6aa817aa..00000000
--- a/ANDROID_3.4.5/drivers/gpu/ion/ion.c
+++ /dev/null
@@ -1,1358 +0,0 @@
-/*
- * drivers/gpu/ion/ion.c
- *
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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/device.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/anon_inodes.h>
-#include <linux/ion.h>
-#include <linux/list.h>
-#include <linux/memblock.h>
-#include <linux/miscdevice.h>
-#include <linux/export.h>
-#include <linux/mm.h>
-#include <linux/mm_types.h>
-#include <linux/rbtree.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/seq_file.h>
-#include <linux/uaccess.h>
-#include <linux/debugfs.h>
-#include <linux/dma-buf.h>
-
-#include "ion_priv.h"
-
-/**
- * struct ion_device - the metadata of the ion device node
- * @dev: the actual misc device
- * @buffers: an rb tree of all the existing buffers
- * @buffer_lock: lock protecting the tree of buffers
- * @lock: rwsem protecting the tree of heaps and clients
- * @heaps: list of all the heaps in the system
- * @user_clients: list of all the clients created from userspace
- */
-struct ion_device {
- struct miscdevice dev;
- struct rb_root buffers;
- struct mutex buffer_lock;
- struct rw_semaphore lock;
- struct rb_root heaps;
- long (*custom_ioctl) (struct ion_client *client, unsigned int cmd,
- unsigned long arg);
- struct rb_root clients;
- struct dentry *debug_root;
-};
-
-/**
- * struct ion_client - a process/hw block local address space
- * @node: node in the tree of all clients
- * @dev: backpointer to ion device
- * @handles: an rb tree of all the handles in this client
- * @lock: lock protecting the tree of handles
- * @heap_mask: mask of all supported heaps
- * @name: used for debugging
- * @task: used for debugging
- *
- * A client represents a list of buffers this client may access.
- * The mutex stored here is used to protect both handles tree
- * as well as the handles themselves, and should be held while modifying either.
- */
-struct ion_client {
- struct rb_node node;
- struct ion_device *dev;
- struct rb_root handles;
- struct mutex lock;
- unsigned int heap_mask;
- const char *name;
- struct task_struct *task;
- pid_t pid;
- struct dentry *debug_root;
-};
-
-/**
- * ion_handle - a client local reference to a buffer
- * @ref: reference count
- * @client: back pointer to the client the buffer resides in
- * @buffer: pointer to the buffer
- * @node: node in the client's handle rbtree
- * @kmap_cnt: count of times this client has mapped to kernel
- * @dmap_cnt: count of times this client has mapped for dma
- *
- * Modifications to node, map_cnt or mapping should be protected by the
- * lock in the client. Other fields are never changed after initialization.
- */
-struct ion_handle {
- struct kref ref;
- struct ion_client *client;
- struct ion_buffer *buffer;
- struct rb_node node;
- unsigned int kmap_cnt;
-};
-
-bool ion_buffer_fault_user_mappings(struct ion_buffer *buffer)
-{
- return ((buffer->flags & ION_FLAG_CACHED) &&
- !(buffer->flags & ION_FLAG_CACHED_NEEDS_SYNC));
-}
-
-bool ion_buffer_cached(struct ion_buffer *buffer)
-{
- return !!(buffer->flags & ION_FLAG_CACHED);
-}
-
-/* this function should only be called while dev->lock is held */
-static void ion_buffer_add(struct ion_device *dev,
- struct ion_buffer *buffer)
-{
- struct rb_node **p = &dev->buffers.rb_node;
- struct rb_node *parent = NULL;
- struct ion_buffer *entry;
-
- while (*p) {
- parent = *p;
- entry = rb_entry(parent, struct ion_buffer, node);
-
- if (buffer < entry) {
- p = &(*p)->rb_left;
- } else if (buffer > entry) {
- p = &(*p)->rb_right;
- } else {
- pr_err("%s: buffer already found.", __func__);
- BUG();
- }
- }
-
- rb_link_node(&buffer->node, parent, p);
- rb_insert_color(&buffer->node, &dev->buffers);
-}
-
-static int ion_buffer_alloc_dirty(struct ion_buffer *buffer);
-
-/* this function should only be called while dev->lock is held */
-static struct ion_buffer *ion_buffer_create(struct ion_heap *heap,
- struct ion_device *dev,
- unsigned long len,
- unsigned long align,
- unsigned long flags)
-{
- struct ion_buffer *buffer;
- struct sg_table *table;
- struct scatterlist *sg;
- int i, ret;
-
- buffer = kzalloc(sizeof(struct ion_buffer), GFP_KERNEL);
- if (!buffer)
- return ERR_PTR(-ENOMEM);
-
- buffer->heap = heap;
- buffer->flags = flags;
- kref_init(&buffer->ref);
-
- ret = heap->ops->allocate(heap, buffer, len, align, flags);
- if (ret) {
- kfree(buffer);
- return ERR_PTR(ret);
- }
-
- buffer->dev = dev;
- buffer->size = len;
-
- table = heap->ops->map_dma(heap, buffer);
- if (IS_ERR_OR_NULL(table)) {
- heap->ops->free(buffer);
- kfree(buffer);
- return ERR_PTR(PTR_ERR(table));
- }
- buffer->sg_table = table;
- if (ion_buffer_fault_user_mappings(buffer)) {
- for_each_sg(buffer->sg_table->sgl, sg, buffer->sg_table->nents,
- i) {
- if (sg_dma_len(sg) == PAGE_SIZE)
- continue;
- pr_err("%s: cached mappings that will be faulted in "
- "must have pagewise sg_lists\n", __func__);
- ret = -EINVAL;
- goto err;
- }
-
- ret = ion_buffer_alloc_dirty(buffer);
- if (ret)
- goto err;
- }
-
- buffer->dev = dev;
- buffer->size = len;
- INIT_LIST_HEAD(&buffer->vmas);
- mutex_init(&buffer->lock);
- /* this will set up dma addresses for the sglist -- it is not
- technically correct as per the dma api -- a specific
- device isn't really taking ownership here. However, in practice on
- our systems the only dma_address space is physical addresses.
- Additionally, we can't afford the overhead of invalidating every
- allocation via dma_map_sg. The implicit contract here is that
- memory comming from the heaps is ready for dma, ie if it has a
- cached mapping that mapping has been invalidated */
- for_each_sg(buffer->sg_table->sgl, sg, buffer->sg_table->nents, i)
- sg_dma_address(sg) = sg_phys(sg);
- mutex_lock(&dev->buffer_lock);
- ion_buffer_add(dev, buffer);
- mutex_unlock(&dev->buffer_lock);
- return buffer;
-
-err:
- heap->ops->unmap_dma(heap, buffer);
- heap->ops->free(buffer);
- kfree(buffer);
- return ERR_PTR(ret);
-}
-
-static void ion_buffer_destroy(struct kref *kref)
-{
- struct ion_buffer *buffer = container_of(kref, struct ion_buffer, ref);
- struct ion_device *dev = buffer->dev;
-
- if (WARN_ON(buffer->kmap_cnt > 0))
- buffer->heap->ops->unmap_kernel(buffer->heap, buffer);
- buffer->heap->ops->unmap_dma(buffer->heap, buffer);
- buffer->heap->ops->free(buffer);
- mutex_lock(&dev->buffer_lock);
- rb_erase(&buffer->node, &dev->buffers);
- mutex_unlock(&dev->buffer_lock);
- if (buffer->flags & ION_FLAG_CACHED)
- kfree(buffer->dirty);
- kfree(buffer);
-}
-
-static void ion_buffer_get(struct ion_buffer *buffer)
-{
- kref_get(&buffer->ref);
-}
-
-static int ion_buffer_put(struct ion_buffer *buffer)
-{
- return kref_put(&buffer->ref, ion_buffer_destroy);
-}
-
-static void ion_buffer_add_to_handle(struct ion_buffer *buffer)
-{
- mutex_lock(&buffer->lock);
- buffer->handle_count++;
- mutex_unlock(&buffer->lock);
-}
-
-static void ion_buffer_remove_from_handle(struct ion_buffer *buffer)
-{
- /*
- * when a buffer is removed from a handle, if it is not in
- * any other handles, copy the taskcomm and the pid of the
- * process it's being removed from into the buffer. At this
- * point there will be no way to track what processes this buffer is
- * being used by, it only exists as a dma_buf file descriptor.
- * The taskcomm and pid can provide a debug hint as to where this fd
- * is in the system
- */
- mutex_lock(&buffer->lock);
- buffer->handle_count--;
- BUG_ON(buffer->handle_count < 0);
- if (!buffer->handle_count) {
- struct task_struct *task;
-
- task = current->group_leader;
- get_task_comm(buffer->task_comm, task);
- buffer->pid = task_pid_nr(task);
- }
- mutex_unlock(&buffer->lock);
-}
-
-static struct ion_handle *ion_handle_create(struct ion_client *client,
- struct ion_buffer *buffer)
-{
- struct ion_handle *handle;
-
- handle = kzalloc(sizeof(struct ion_handle), GFP_KERNEL);
- if (!handle)
- return ERR_PTR(-ENOMEM);
- kref_init(&handle->ref);
- rb_init_node(&handle->node);
- handle->client = client;
- ion_buffer_get(buffer);
- ion_buffer_add_to_handle(buffer);
- handle->buffer = buffer;
-
- return handle;
-}
-
-static void ion_handle_kmap_put(struct ion_handle *);
-
-static void ion_handle_destroy(struct kref *kref)
-{
- struct ion_handle *handle = container_of(kref, struct ion_handle, ref);
- struct ion_client *client = handle->client;
- struct ion_buffer *buffer = handle->buffer;
-
- mutex_lock(&buffer->lock);
- while (handle->kmap_cnt)
- ion_handle_kmap_put(handle);
- mutex_unlock(&buffer->lock);
-
- if (!RB_EMPTY_NODE(&handle->node))
- rb_erase(&handle->node, &client->handles);
-
- ion_buffer_remove_from_handle(buffer);
- ion_buffer_put(buffer);
-
- kfree(handle);
-}
-
-struct ion_buffer *ion_handle_buffer(struct ion_handle *handle)
-{
- return handle->buffer;
-}
-
-static void ion_handle_get(struct ion_handle *handle)
-{
- kref_get(&handle->ref);
-}
-
-static int ion_handle_put(struct ion_handle *handle)
-{
- return kref_put(&handle->ref, ion_handle_destroy);
-}
-
-static struct ion_handle *ion_handle_lookup(struct ion_client *client,
- struct ion_buffer *buffer)
-{
- struct rb_node *n;
-
- for (n = rb_first(&client->handles); n; n = rb_next(n)) {
- struct ion_handle *handle = rb_entry(n, struct ion_handle,
- node);
- if (handle->buffer == buffer)
- return handle;
- }
- return NULL;
-}
-
-static bool ion_handle_validate(struct ion_client *client, struct ion_handle *handle)
-{
- struct rb_node *n = client->handles.rb_node;
-
- while (n) {
- struct ion_handle *handle_node = rb_entry(n, struct ion_handle,
- node);
- if (handle < handle_node)
- n = n->rb_left;
- else if (handle > handle_node)
- n = n->rb_right;
- else
- return true;
- }
- return false;
-}
-
-static void ion_handle_add(struct ion_client *client, struct ion_handle *handle)
-{
- struct rb_node **p = &client->handles.rb_node;
- struct rb_node *parent = NULL;
- struct ion_handle *entry;
-
- while (*p) {
- parent = *p;
- entry = rb_entry(parent, struct ion_handle, node);
-
- if (handle < entry)
- p = &(*p)->rb_left;
- else if (handle > entry)
- p = &(*p)->rb_right;
- else
- WARN(1, "%s: buffer already found.", __func__);
- }
-
- rb_link_node(&handle->node, parent, p);
- rb_insert_color(&handle->node, &client->handles);
-}
-
-struct ion_handle *ion_alloc(struct ion_client *client, size_t len,
- size_t align, unsigned int heap_mask,
- unsigned int flags)
-{
- struct rb_node *n;
- struct ion_handle *handle;
- struct ion_device *dev = client->dev;
- struct ion_buffer *buffer = NULL;
-
- pr_debug("%s: len %d align %d heap_mask %u flags %x\n", __func__, len,
- align, heap_mask, flags);
- /*
- * traverse the list of heaps available in this system in priority
- * order. If the heap type is supported by the client, and matches the
- * request of the caller allocate from it. Repeat until allocate has
- * succeeded or all heaps have been tried
- */
- if (WARN_ON(!len))
- return ERR_PTR(-EINVAL);
-
- len = PAGE_ALIGN(len);
-
- down_read(&dev->lock);
- for (n = rb_first(&dev->heaps); n != NULL; n = rb_next(n)) {
- struct ion_heap *heap = rb_entry(n, struct ion_heap, node);
- /* if the client doesn't support this heap type */
- if (!((1 << heap->type) & client->heap_mask))
- continue;
- /* if the caller didn't specify this heap type */
- if (!((1 << heap->id) & heap_mask))
- continue;
- buffer = ion_buffer_create(heap, dev, len, align, flags);
- if (!IS_ERR_OR_NULL(buffer))
- break;
- }
- up_read(&dev->lock);
-
- if (buffer == NULL)
- return ERR_PTR(-ENODEV);
-
- if (IS_ERR(buffer))
- return ERR_PTR(PTR_ERR(buffer));
-
- handle = ion_handle_create(client, buffer);
-
- /*
- * ion_buffer_create will create a buffer with a ref_cnt of 1,
- * and ion_handle_create will take a second reference, drop one here
- */
- ion_buffer_put(buffer);
-
- if (!IS_ERR(handle)) {
- mutex_lock(&client->lock);
- ion_handle_add(client, handle);
- mutex_unlock(&client->lock);
- }
-
-
- return handle;
-}
-EXPORT_SYMBOL(ion_alloc);
-
-void ion_free(struct ion_client *client, struct ion_handle *handle)
-{
- bool valid_handle;
-
- BUG_ON(client != handle->client);
-
- mutex_lock(&client->lock);
- valid_handle = ion_handle_validate(client, handle);
-
- if (!valid_handle) {
- WARN(1, "%s: invalid handle passed to free.\n", __func__);
- mutex_unlock(&client->lock);
- return;
- }
- ion_handle_put(handle);
- mutex_unlock(&client->lock);
-}
-EXPORT_SYMBOL(ion_free);
-
-int ion_phys(struct ion_client *client, struct ion_handle *handle,
- ion_phys_addr_t *addr, size_t *len)
-{
- struct ion_buffer *buffer;
- int ret;
-
- mutex_lock(&client->lock);
- if (!ion_handle_validate(client, handle)) {
- mutex_unlock(&client->lock);
- return -EINVAL;
- }
-
- buffer = handle->buffer;
-
- if (!buffer->heap->ops->phys) {
- pr_err("%s: ion_phys is not implemented by this heap.\n",
- __func__);
- mutex_unlock(&client->lock);
- return -ENODEV;
- }
- mutex_unlock(&client->lock);
- ret = buffer->heap->ops->phys(buffer->heap, buffer, addr, len);
- return ret;
-}
-EXPORT_SYMBOL(ion_phys);
-
-static void *ion_buffer_kmap_get(struct ion_buffer *buffer)
-{
- void *vaddr;
-
- if (buffer->kmap_cnt) {
- buffer->kmap_cnt++;
- return buffer->vaddr;
- }
- vaddr = buffer->heap->ops->map_kernel(buffer->heap, buffer);
- if (IS_ERR_OR_NULL(vaddr))
- return vaddr;
- buffer->vaddr = vaddr;
- buffer->kmap_cnt++;
- return vaddr;
-}
-
-static void *ion_handle_kmap_get(struct ion_handle *handle)
-{
- struct ion_buffer *buffer = handle->buffer;
- void *vaddr;
-
- if (handle->kmap_cnt) {
- handle->kmap_cnt++;
- return buffer->vaddr;
- }
- vaddr = ion_buffer_kmap_get(buffer);
- if (IS_ERR_OR_NULL(vaddr))
- return vaddr;
- handle->kmap_cnt++;
- return vaddr;
-}
-
-static void ion_buffer_kmap_put(struct ion_buffer *buffer)
-{
- buffer->kmap_cnt--;
- if (!buffer->kmap_cnt) {
- buffer->heap->ops->unmap_kernel(buffer->heap, buffer);
- buffer->vaddr = NULL;
- }
-}
-
-static void ion_handle_kmap_put(struct ion_handle *handle)
-{
- struct ion_buffer *buffer = handle->buffer;
-
- handle->kmap_cnt--;
- if (!handle->kmap_cnt)
- ion_buffer_kmap_put(buffer);
-}
-
-void *ion_map_kernel(struct ion_client *client, struct ion_handle *handle)
-{
- struct ion_buffer *buffer;
- void *vaddr;
-
- mutex_lock(&client->lock);
- if (!ion_handle_validate(client, handle)) {
- pr_err("%s: invalid handle passed to map_kernel.\n",
- __func__);
- mutex_unlock(&client->lock);
- return ERR_PTR(-EINVAL);
- }
-
- buffer = handle->buffer;
-
- if (!handle->buffer->heap->ops->map_kernel) {
- pr_err("%s: map_kernel is not implemented by this heap.\n",
- __func__);
- mutex_unlock(&client->lock);
- return ERR_PTR(-ENODEV);
- }
-
- mutex_lock(&buffer->lock);
- vaddr = ion_handle_kmap_get(handle);
- mutex_unlock(&buffer->lock);
- mutex_unlock(&client->lock);
- return vaddr;
-}
-EXPORT_SYMBOL(ion_map_kernel);
-
-void ion_unmap_kernel(struct ion_client *client, struct ion_handle *handle)
-{
- struct ion_buffer *buffer;
-
- mutex_lock(&client->lock);
- buffer = handle->buffer;
- mutex_lock(&buffer->lock);
- ion_handle_kmap_put(handle);
- mutex_unlock(&buffer->lock);
- mutex_unlock(&client->lock);
-}
-EXPORT_SYMBOL(ion_unmap_kernel);
-
-static int ion_debug_client_show(struct seq_file *s, void *unused)
-{
- struct ion_client *client = s->private;
- struct rb_node *n;
- size_t sizes[ION_NUM_HEAPS] = {0};
- const char *names[ION_NUM_HEAPS] = {0};
- int i;
-
- mutex_lock(&client->lock);
- for (n = rb_first(&client->handles); n; n = rb_next(n)) {
- struct ion_handle *handle = rb_entry(n, struct ion_handle,
- node);
- enum ion_heap_type type = handle->buffer->heap->type;
-
- if (!names[type])
- names[type] = handle->buffer->heap->name;
- sizes[type] += handle->buffer->size;
- }
- mutex_unlock(&client->lock);
-
- seq_printf(s, "%16.16s: %16.16s\n", "heap_name", "size_in_bytes");
- for (i = 0; i < ION_NUM_HEAPS; i++) {
- if (!names[i])
- continue;
- seq_printf(s, "%16.16s: %16u\n", names[i], sizes[i]);
- }
- return 0;
-}
-
-static int ion_debug_client_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ion_debug_client_show, inode->i_private);
-}
-
-static const struct file_operations debug_client_fops = {
- .open = ion_debug_client_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-struct ion_client *ion_client_create(struct ion_device *dev,
- unsigned int heap_mask,
- const char *name)
-{
- struct ion_client *client;
- struct task_struct *task;
- struct rb_node **p;
- struct rb_node *parent = NULL;
- struct ion_client *entry;
- char debug_name[64];
- pid_t pid;
-
- get_task_struct(current->group_leader);
- task_lock(current->group_leader);
- pid = task_pid_nr(current->group_leader);
- /* don't bother to store task struct for kernel threads,
- they can't be killed anyway */
- if (current->group_leader->flags & PF_KTHREAD) {
- put_task_struct(current->group_leader);
- task = NULL;
- } else {
- task = current->group_leader;
- }
- task_unlock(current->group_leader);
-
- client = kzalloc(sizeof(struct ion_client), GFP_KERNEL);
- if (!client) {
- if (task)
- put_task_struct(current->group_leader);
- return ERR_PTR(-ENOMEM);
- }
-
- client->dev = dev;
- client->handles = RB_ROOT;
- mutex_init(&client->lock);
- client->name = name;
- client->heap_mask = heap_mask;
- client->task = task;
- client->pid = pid;
-
- down_write(&dev->lock);
- p = &dev->clients.rb_node;
- while (*p) {
- parent = *p;
- entry = rb_entry(parent, struct ion_client, node);
-
- if (client < entry)
- p = &(*p)->rb_left;
- else if (client > entry)
- p = &(*p)->rb_right;
- }
- rb_link_node(&client->node, parent, p);
- rb_insert_color(&client->node, &dev->clients);
-
- snprintf(debug_name, 64, "%u", client->pid);
- client->debug_root = debugfs_create_file(debug_name, 0664,
- dev->debug_root, client,
- &debug_client_fops);
- up_write(&dev->lock);
-
- return client;
-}
-
-void ion_client_destroy(struct ion_client *client)
-{
- struct ion_device *dev = client->dev;
- struct rb_node *n;
-
- pr_debug("%s: %d\n", __func__, __LINE__);
- while ((n = rb_first(&client->handles))) {
- struct ion_handle *handle = rb_entry(n, struct ion_handle,
- node);
- ion_handle_destroy(&handle->ref);
- }
- down_write(&dev->lock);
- if (client->task)
- put_task_struct(client->task);
- rb_erase(&client->node, &dev->clients);
- debugfs_remove_recursive(client->debug_root);
- up_write(&dev->lock);
-
- kfree(client);
-}
-EXPORT_SYMBOL(ion_client_destroy);
-
-struct sg_table *ion_sg_table(struct ion_client *client,
- struct ion_handle *handle)
-{
- struct ion_buffer *buffer;
- struct sg_table *table;
-
- mutex_lock(&client->lock);
- if (!ion_handle_validate(client, handle)) {
- pr_err("%s: invalid handle passed to map_dma.\n",
- __func__);
- mutex_unlock(&client->lock);
- return ERR_PTR(-EINVAL);
- }
- buffer = handle->buffer;
- table = buffer->sg_table;
- mutex_unlock(&client->lock);
- return table;
-}
-EXPORT_SYMBOL(ion_sg_table);
-
-static void ion_buffer_sync_for_device(struct ion_buffer *buffer,
- struct device *dev,
- enum dma_data_direction direction);
-
-static struct sg_table *ion_map_dma_buf(struct dma_buf_attachment *attachment,
- enum dma_data_direction direction)
-{
- struct dma_buf *dmabuf = attachment->dmabuf;
- struct ion_buffer *buffer = dmabuf->priv;
-
- ion_buffer_sync_for_device(buffer, attachment->dev, direction);
- return buffer->sg_table;
-}
-
-static void ion_unmap_dma_buf(struct dma_buf_attachment *attachment,
- struct sg_table *table,
- enum dma_data_direction direction)
-{
-}
-
-static int ion_buffer_alloc_dirty(struct ion_buffer *buffer)
-{
- unsigned long pages = buffer->sg_table->nents;
- unsigned long length = (pages + BITS_PER_LONG - 1)/BITS_PER_LONG;
-
- buffer->dirty = kzalloc(length * sizeof(unsigned long), GFP_KERNEL);
- if (!buffer->dirty)
- return -ENOMEM;
- return 0;
-}
-
-struct ion_vma_list {
- struct list_head list;
- struct vm_area_struct *vma;
-};
-
-static void ion_buffer_sync_for_device(struct ion_buffer *buffer,
- struct device *dev,
- enum dma_data_direction dir)
-{
- struct scatterlist *sg;
- int i;
- struct ion_vma_list *vma_list;
-
- pr_debug("%s: syncing for device %s\n", __func__,
- dev ? dev_name(dev) : "null");
-
- if (!ion_buffer_fault_user_mappings(buffer))
- return;
-
- mutex_lock(&buffer->lock);
- for_each_sg(buffer->sg_table->sgl, sg, buffer->sg_table->nents, i) {
- if (!test_bit(i, buffer->dirty))
- continue;
- dma_sync_sg_for_device(dev, sg, 1, dir);
- clear_bit(i, buffer->dirty);
- }
- list_for_each_entry(vma_list, &buffer->vmas, list) {
- struct vm_area_struct *vma = vma_list->vma;
-
- zap_page_range(vma, vma->vm_start, vma->vm_end - vma->vm_start,
- NULL);
- }
- mutex_unlock(&buffer->lock);
-}
-
-int ion_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
-{
- struct ion_buffer *buffer = vma->vm_private_data;
- struct scatterlist *sg;
- int i;
-
- mutex_lock(&buffer->lock);
- set_bit(vmf->pgoff, buffer->dirty);
-
- for_each_sg(buffer->sg_table->sgl, sg, buffer->sg_table->nents, i) {
- if (i != vmf->pgoff)
- continue;
- dma_sync_sg_for_cpu(NULL, sg, 1, DMA_BIDIRECTIONAL);
- vm_insert_page(vma, (unsigned long)vmf->virtual_address,
- sg_page(sg));
- break;
- }
- mutex_unlock(&buffer->lock);
- return VM_FAULT_NOPAGE;
-}
-
-static void ion_vm_open(struct vm_area_struct *vma)
-{
- struct ion_buffer *buffer = vma->vm_private_data;
- struct ion_vma_list *vma_list;
-
- vma_list = kmalloc(sizeof(struct ion_vma_list), GFP_KERNEL);
- if (!vma_list)
- return;
- vma_list->vma = vma;
- mutex_lock(&buffer->lock);
- list_add(&vma_list->list, &buffer->vmas);
- mutex_unlock(&buffer->lock);
- pr_debug("%s: adding %p\n", __func__, vma);
-}
-
-static void ion_vm_close(struct vm_area_struct *vma)
-{
- struct ion_buffer *buffer = vma->vm_private_data;
- struct ion_vma_list *vma_list, *tmp;
-
- pr_debug("%s\n", __func__);
- mutex_lock(&buffer->lock);
- list_for_each_entry_safe(vma_list, tmp, &buffer->vmas, list) {
- if (vma_list->vma != vma)
- continue;
- list_del(&vma_list->list);
- kfree(vma_list);
- pr_debug("%s: deleting %p\n", __func__, vma);
- break;
- }
- mutex_unlock(&buffer->lock);
-}
-
-struct vm_operations_struct ion_vma_ops = {
- .open = ion_vm_open,
- .close = ion_vm_close,
- .fault = ion_vm_fault,
-};
-
-static int ion_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma)
-{
- struct ion_buffer *buffer = dmabuf->priv;
- int ret = 0;
-
- if (!buffer->heap->ops->map_user) {
- pr_err("%s: this heap does not define a method for mapping "
- "to userspace\n", __func__);
- return -EINVAL;
- }
-
- if (ion_buffer_fault_user_mappings(buffer)) {
- vma->vm_private_data = buffer;
- vma->vm_ops = &ion_vma_ops;
- ion_vm_open(vma);
- return 0;
- }
-
- if (!(buffer->flags & ION_FLAG_CACHED))
- vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
-
- mutex_lock(&buffer->lock);
- /* now map it to userspace */
- ret = buffer->heap->ops->map_user(buffer->heap, buffer, vma);
- mutex_unlock(&buffer->lock);
-
- if (ret)
- pr_err("%s: failure mapping buffer to userspace\n",
- __func__);
-
- return ret;
-}
-
-static void ion_dma_buf_release(struct dma_buf *dmabuf)
-{
- struct ion_buffer *buffer = dmabuf->priv;
- ion_buffer_put(buffer);
-}
-
-static void *ion_dma_buf_kmap(struct dma_buf *dmabuf, unsigned long offset)
-{
- struct ion_buffer *buffer = dmabuf->priv;
- return buffer->vaddr + offset * PAGE_SIZE;
-}
-
-static void ion_dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long offset,
- void *ptr)
-{
- return;
-}
-
-static int ion_dma_buf_begin_cpu_access(struct dma_buf *dmabuf, size_t start,
- size_t len,
- enum dma_data_direction direction)
-{
- struct ion_buffer *buffer = dmabuf->priv;
- void *vaddr;
-
- if (!buffer->heap->ops->map_kernel) {
- pr_err("%s: map kernel is not implemented by this heap.\n",
- __func__);
- return -ENODEV;
- }
-
- mutex_lock(&buffer->lock);
- vaddr = ion_buffer_kmap_get(buffer);
- mutex_unlock(&buffer->lock);
- if (IS_ERR(vaddr))
- return PTR_ERR(vaddr);
- if (!vaddr)
- return -ENOMEM;
- return 0;
-}
-
-static void ion_dma_buf_end_cpu_access(struct dma_buf *dmabuf, size_t start,
- size_t len,
- enum dma_data_direction direction)
-{
- struct ion_buffer *buffer = dmabuf->priv;
-
- mutex_lock(&buffer->lock);
- ion_buffer_kmap_put(buffer);
- mutex_unlock(&buffer->lock);
-}
-
-struct dma_buf_ops dma_buf_ops = {
- .map_dma_buf = ion_map_dma_buf,
- .unmap_dma_buf = ion_unmap_dma_buf,
- .mmap = ion_mmap,
- .release = ion_dma_buf_release,
- .begin_cpu_access = ion_dma_buf_begin_cpu_access,
- .end_cpu_access = ion_dma_buf_end_cpu_access,
- .kmap_atomic = ion_dma_buf_kmap,
- .kunmap_atomic = ion_dma_buf_kunmap,
- .kmap = ion_dma_buf_kmap,
- .kunmap = ion_dma_buf_kunmap,
-};
-
-int ion_share_dma_buf(struct ion_client *client, struct ion_handle *handle)
-{
- struct ion_buffer *buffer;
- struct dma_buf *dmabuf;
- bool valid_handle;
- int fd;
-
- mutex_lock(&client->lock);
- valid_handle = ion_handle_validate(client, handle);
- mutex_unlock(&client->lock);
- if (!valid_handle) {
- WARN(1, "%s: invalid handle passed to share.\n", __func__);
- return -EINVAL;
- }
-
- buffer = handle->buffer;
- ion_buffer_get(buffer);
- dmabuf = dma_buf_export(buffer, &dma_buf_ops, buffer->size, O_RDWR);
- if (IS_ERR(dmabuf)) {
- ion_buffer_put(buffer);
- return PTR_ERR(dmabuf);
- }
- fd = dma_buf_fd(dmabuf, O_CLOEXEC);
- if (fd < 0)
- dma_buf_put(dmabuf);
-
- return fd;
-}
-EXPORT_SYMBOL(ion_share_dma_buf);
-
-struct ion_handle *ion_import_dma_buf(struct ion_client *client, int fd)
-{
- struct dma_buf *dmabuf;
- struct ion_buffer *buffer;
- struct ion_handle *handle;
-
- dmabuf = dma_buf_get(fd);
- if (IS_ERR_OR_NULL(dmabuf))
- return ERR_PTR(PTR_ERR(dmabuf));
- /* if this memory came from ion */
-
- if (dmabuf->ops != &dma_buf_ops) {
- pr_err("%s: can not import dmabuf from another exporter\n",
- __func__);
- dma_buf_put(dmabuf);
- return ERR_PTR(-EINVAL);
- }
- buffer = dmabuf->priv;
-
- mutex_lock(&client->lock);
- /* if a handle exists for this buffer just take a reference to it */
- handle = ion_handle_lookup(client, buffer);
- if (!IS_ERR_OR_NULL(handle)) {
- ion_handle_get(handle);
- goto end;
- }
- handle = ion_handle_create(client, buffer);
- if (IS_ERR_OR_NULL(handle))
- goto end;
- ion_handle_add(client, handle);
-end:
- mutex_unlock(&client->lock);
- dma_buf_put(dmabuf);
- return handle;
-}
-EXPORT_SYMBOL(ion_import_dma_buf);
-
-static int ion_sync_for_device(struct ion_client *client, int fd)
-{
- struct dma_buf *dmabuf;
- struct ion_buffer *buffer;
-
- dmabuf = dma_buf_get(fd);
- if (IS_ERR_OR_NULL(dmabuf))
- return PTR_ERR(dmabuf);
-
- /* if this memory came from ion */
- if (dmabuf->ops != &dma_buf_ops) {
- pr_err("%s: can not sync dmabuf from another exporter\n",
- __func__);
- dma_buf_put(dmabuf);
- return -EINVAL;
- }
- buffer = dmabuf->priv;
-
- dma_sync_sg_for_device(NULL, buffer->sg_table->sgl,
- buffer->sg_table->nents, DMA_BIDIRECTIONAL);
- dma_buf_put(dmabuf);
- return 0;
-}
-
-static long ion_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
- struct ion_client *client = filp->private_data;
-
- switch (cmd) {
- case ION_IOC_ALLOC:
- {
- struct ion_allocation_data data;
-
- if (copy_from_user(&data, (void __user *)arg, sizeof(data)))
- return -EFAULT;
- data.handle = ion_alloc(client, data.len, data.align,
- data.heap_mask, data.flags);
-
- if (IS_ERR(data.handle))
- return PTR_ERR(data.handle);
-
- if (copy_to_user((void __user *)arg, &data, sizeof(data))) {
- ion_free(client, data.handle);
- return -EFAULT;
- }
- break;
- }
- case ION_IOC_FREE:
- {
- struct ion_handle_data data;
- bool valid;
-
- if (copy_from_user(&data, (void __user *)arg,
- sizeof(struct ion_handle_data)))
- return -EFAULT;
- mutex_lock(&client->lock);
- valid = ion_handle_validate(client, data.handle);
- mutex_unlock(&client->lock);
- if (!valid)
- return -EINVAL;
- ion_free(client, data.handle);
- break;
- }
- case ION_IOC_SHARE:
- {
- struct ion_fd_data data;
-
- if (copy_from_user(&data, (void __user *)arg, sizeof(data)))
- return -EFAULT;
- data.fd = ion_share_dma_buf(client, data.handle);
- if (copy_to_user((void __user *)arg, &data, sizeof(data)))
- return -EFAULT;
- if (data.fd < 0)
- return data.fd;
- break;
- }
- case ION_IOC_IMPORT:
- {
- struct ion_fd_data data;
- int ret = 0;
- if (copy_from_user(&data, (void __user *)arg,
- sizeof(struct ion_fd_data)))
- return -EFAULT;
- data.handle = ion_import_dma_buf(client, data.fd);
- if (IS_ERR(data.handle)) {
- ret = PTR_ERR(data.handle);
- data.handle = NULL;
- }
- if (copy_to_user((void __user *)arg, &data,
- sizeof(struct ion_fd_data)))
- return -EFAULT;
- if (ret < 0)
- return ret;
- break;
- }
- case ION_IOC_SYNC:
- {
- struct ion_fd_data data;
- if (copy_from_user(&data, (void __user *)arg,
- sizeof(struct ion_fd_data)))
- return -EFAULT;
- ion_sync_for_device(client, data.fd);
- break;
- }
- case ION_IOC_CUSTOM:
- {
- struct ion_device *dev = client->dev;
- struct ion_custom_data data;
-
- if (!dev->custom_ioctl)
- return -ENOTTY;
- if (copy_from_user(&data, (void __user *)arg,
- sizeof(struct ion_custom_data)))
- return -EFAULT;
- return dev->custom_ioctl(client, data.cmd, data.arg);
- }
- default:
- return -ENOTTY;
- }
- return 0;
-}
-
-static int ion_release(struct inode *inode, struct file *file)
-{
- struct ion_client *client = file->private_data;
-
- pr_debug("%s: %d\n", __func__, __LINE__);
- ion_client_destroy(client);
- return 0;
-}
-
-static int ion_open(struct inode *inode, struct file *file)
-{
- struct miscdevice *miscdev = file->private_data;
- struct ion_device *dev = container_of(miscdev, struct ion_device, dev);
- struct ion_client *client;
-
- pr_debug("%s: %d\n", __func__, __LINE__);
- client = ion_client_create(dev, -1, "user");
- if (IS_ERR_OR_NULL(client))
- return PTR_ERR(client);
- file->private_data = client;
-
- return 0;
-}
-
-static const struct file_operations ion_fops = {
- .owner = THIS_MODULE,
- .open = ion_open,
- .release = ion_release,
- .unlocked_ioctl = ion_ioctl,
-};
-
-static size_t ion_debug_heap_total(struct ion_client *client,
- enum ion_heap_type type)
-{
- size_t size = 0;
- struct rb_node *n;
-
- mutex_lock(&client->lock);
- for (n = rb_first(&client->handles); n; n = rb_next(n)) {
- struct ion_handle *handle = rb_entry(n,
- struct ion_handle,
- node);
- if (handle->buffer->heap->type == type)
- size += handle->buffer->size;
- }
- mutex_unlock(&client->lock);
- return size;
-}
-
-static int ion_debug_heap_show(struct seq_file *s, void *unused)
-{
- struct ion_heap *heap = s->private;
- struct ion_device *dev = heap->dev;
- struct rb_node *n;
- size_t total_size = 0;
- size_t total_orphaned_size = 0;
-
- seq_printf(s, "%16.s %16.s %16.s\n", "client", "pid", "size");
- seq_printf(s, "----------------------------------------------------\n");
-
- for (n = rb_first(&dev->clients); n; n = rb_next(n)) {
- struct ion_client *client = rb_entry(n, struct ion_client,
- node);
- size_t size = ion_debug_heap_total(client, heap->type);
- if (!size)
- continue;
- if (client->task) {
- char task_comm[TASK_COMM_LEN];
-
- get_task_comm(task_comm, client->task);
- seq_printf(s, "%16.s %16u %16u\n", task_comm,
- client->pid, size);
- } else {
- seq_printf(s, "%16.s %16u %16u\n", client->name,
- client->pid, size);
- }
- }
- seq_printf(s, "----------------------------------------------------\n");
- seq_printf(s, "orphaned allocations (info is from last known client):"
- "\n");
- mutex_lock(&dev->buffer_lock);
- for (n = rb_first(&dev->buffers); n; n = rb_next(n)) {
- struct ion_buffer *buffer = rb_entry(n, struct ion_buffer,
- node);
- if (buffer->heap->type != heap->type)
- continue;
- total_size += buffer->size;
- if (!buffer->handle_count) {
- seq_printf(s, "%16.s %16u %16u %d %d\n", buffer->task_comm,
- buffer->pid, buffer->size, buffer->kmap_cnt,
- atomic_read(&buffer->ref.refcount));
- total_orphaned_size += buffer->size;
- }
- }
- mutex_unlock(&dev->buffer_lock);
- seq_printf(s, "----------------------------------------------------\n");
- seq_printf(s, "%16.s %16u\n", "total orphaned",
- total_orphaned_size);
- seq_printf(s, "%16.s %16u\n", "total ", total_size);
- seq_printf(s, "----------------------------------------------------\n");
-
- if (heap->debug_show)
- heap->debug_show(heap, s, unused);
-
- return 0;
-}
-
-static int ion_debug_heap_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ion_debug_heap_show, inode->i_private);
-}
-
-static const struct file_operations debug_heap_fops = {
- .open = ion_debug_heap_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-void ion_device_add_heap(struct ion_device *dev, struct ion_heap *heap)
-{
- struct rb_node **p = &dev->heaps.rb_node;
- struct rb_node *parent = NULL;
- struct ion_heap *entry;
-
- if (!heap->ops->allocate || !heap->ops->free || !heap->ops->map_dma ||
- !heap->ops->unmap_dma)
- pr_err("%s: can not add heap with invalid ops struct.\n",
- __func__);
-
- heap->dev = dev;
- down_write(&dev->lock);
- while (*p) {
- parent = *p;
- entry = rb_entry(parent, struct ion_heap, node);
-
- if (heap->id < entry->id) {
- p = &(*p)->rb_left;
- } else if (heap->id > entry->id ) {
- p = &(*p)->rb_right;
- } else {
- pr_err("%s: can not insert multiple heaps with "
- "id %d\n", __func__, heap->id);
- goto end;
- }
- }
-
- rb_link_node(&heap->node, parent, p);
- rb_insert_color(&heap->node, &dev->heaps);
- debugfs_create_file(heap->name, 0664, dev->debug_root, heap,
- &debug_heap_fops);
-end:
- up_write(&dev->lock);
-}
-
-struct ion_device *ion_device_create(long (*custom_ioctl)
- (struct ion_client *client,
- unsigned int cmd,
- unsigned long arg))
-{
- struct ion_device *idev;
- int ret;
-
- idev = kzalloc(sizeof(struct ion_device), GFP_KERNEL);
- if (!idev)
- return ERR_PTR(-ENOMEM);
-
- idev->dev.minor = MISC_DYNAMIC_MINOR;
- idev->dev.name = "ion";
- idev->dev.fops = &ion_fops;
- idev->dev.parent = NULL;
- ret = misc_register(&idev->dev);
- if (ret) {
- pr_err("ion: failed to register misc device.\n");
- return ERR_PTR(ret);
- }
-
- idev->debug_root = debugfs_create_dir("ion", NULL);
- if (IS_ERR_OR_NULL(idev->debug_root))
- pr_err("ion: failed to create debug files.\n");
-
- idev->custom_ioctl = custom_ioctl;
- idev->buffers = RB_ROOT;
- mutex_init(&idev->buffer_lock);
- init_rwsem(&idev->lock);
- idev->heaps = RB_ROOT;
- idev->clients = RB_ROOT;
- return idev;
-}
-
-void ion_device_destroy(struct ion_device *dev)
-{
- misc_deregister(&dev->dev);
- /* XXX need to free the heaps and clients ? */
- kfree(dev);
-}
-
-void __init ion_reserve(struct ion_platform_data *data)
-{
- int i, ret;
-
- for (i = 0; i < data->nr; i++) {
- if (data->heaps[i].size == 0)
- continue;
- ret = memblock_reserve(data->heaps[i].base,
- data->heaps[i].size);
- if (ret)
- pr_err("memblock reserve of %x@%lx failed\n",
- data->heaps[i].size,
- data->heaps[i].base);
- }
-}
diff --git a/ANDROID_3.4.5/drivers/gpu/ion/ion_carveout_heap.c b/ANDROID_3.4.5/drivers/gpu/ion/ion_carveout_heap.c
deleted file mode 100644
index ce8d3119..00000000
--- a/ANDROID_3.4.5/drivers/gpu/ion/ion_carveout_heap.c
+++ /dev/null
@@ -1,182 +0,0 @@
-/*
- * drivers/gpu/ion/ion_carveout_heap.c
- *
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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/spinlock.h>
-
-#include <linux/err.h>
-#include <linux/genalloc.h>
-#include <linux/io.h>
-#include <linux/ion.h>
-#include <linux/mm.h>
-#include <linux/scatterlist.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include "ion_priv.h"
-
-#include <asm/mach/map.h>
-
-struct ion_carveout_heap {
- struct ion_heap heap;
- struct gen_pool *pool;
- ion_phys_addr_t base;
-};
-
-ion_phys_addr_t ion_carveout_allocate(struct ion_heap *heap,
- unsigned long size,
- unsigned long align)
-{
- struct ion_carveout_heap *carveout_heap =
- container_of(heap, struct ion_carveout_heap, heap);
- unsigned long offset = gen_pool_alloc(carveout_heap->pool, size);
-
- if (!offset)
- return ION_CARVEOUT_ALLOCATE_FAIL;
-
- return offset;
-}
-
-void ion_carveout_free(struct ion_heap *heap, ion_phys_addr_t addr,
- unsigned long size)
-{
- struct ion_carveout_heap *carveout_heap =
- container_of(heap, struct ion_carveout_heap, heap);
-
- if (addr == ION_CARVEOUT_ALLOCATE_FAIL)
- return;
- gen_pool_free(carveout_heap->pool, addr, size);
-}
-
-static int ion_carveout_heap_phys(struct ion_heap *heap,
- struct ion_buffer *buffer,
- ion_phys_addr_t *addr, size_t *len)
-{
- *addr = buffer->priv_phys;
- *len = buffer->size;
- return 0;
-}
-
-static int ion_carveout_heap_allocate(struct ion_heap *heap,
- struct ion_buffer *buffer,
- unsigned long size, unsigned long align,
- unsigned long flags)
-{
- buffer->priv_phys = ion_carveout_allocate(heap, size, align);
- return buffer->priv_phys == ION_CARVEOUT_ALLOCATE_FAIL ? -ENOMEM : 0;
-}
-
-static void ion_carveout_heap_free(struct ion_buffer *buffer)
-{
- struct ion_heap *heap = buffer->heap;
-
- ion_carveout_free(heap, buffer->priv_phys, buffer->size);
- buffer->priv_phys = ION_CARVEOUT_ALLOCATE_FAIL;
-}
-
-struct sg_table *ion_carveout_heap_map_dma(struct ion_heap *heap,
- struct ion_buffer *buffer)
-{
- struct sg_table *table;
- int ret;
-
- table = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
- if (!table)
- return ERR_PTR(-ENOMEM);
- ret = sg_alloc_table(table, 1, GFP_KERNEL);
- if (ret) {
- kfree(table);
- return ERR_PTR(ret);
- }
- sg_set_page(table->sgl, phys_to_page(buffer->priv_phys), buffer->size,
- 0);
- return table;
-}
-
-void ion_carveout_heap_unmap_dma(struct ion_heap *heap,
- struct ion_buffer *buffer)
-{
- sg_free_table(buffer->sg_table);
-}
-
-void *ion_carveout_heap_map_kernel(struct ion_heap *heap,
- struct ion_buffer *buffer)
-{
- int mtype = MT_MEMORY_NONCACHED;
-
- if (buffer->flags & ION_FLAG_CACHED)
- mtype = MT_MEMORY;
-
- return __arm_ioremap(buffer->priv_phys, buffer->size,
- mtype);
-}
-
-void ion_carveout_heap_unmap_kernel(struct ion_heap *heap,
- struct ion_buffer *buffer)
-{
- __arm_iounmap(buffer->vaddr);
- buffer->vaddr = NULL;
- return;
-}
-
-int ion_carveout_heap_map_user(struct ion_heap *heap, struct ion_buffer *buffer,
- struct vm_area_struct *vma)
-{
- return remap_pfn_range(vma, vma->vm_start,
- __phys_to_pfn(buffer->priv_phys) + vma->vm_pgoff,
- vma->vm_end - vma->vm_start,
- pgprot_noncached(vma->vm_page_prot));
-}
-
-static struct ion_heap_ops carveout_heap_ops = {
- .allocate = ion_carveout_heap_allocate,
- .free = ion_carveout_heap_free,
- .phys = ion_carveout_heap_phys,
- .map_dma = ion_carveout_heap_map_dma,
- .unmap_dma = ion_carveout_heap_unmap_dma,
- .map_user = ion_carveout_heap_map_user,
- .map_kernel = ion_carveout_heap_map_kernel,
- .unmap_kernel = ion_carveout_heap_unmap_kernel,
-};
-
-struct ion_heap *ion_carveout_heap_create(struct ion_platform_heap *heap_data)
-{
- struct ion_carveout_heap *carveout_heap;
-
- carveout_heap = kzalloc(sizeof(struct ion_carveout_heap), GFP_KERNEL);
- if (!carveout_heap)
- return ERR_PTR(-ENOMEM);
-
- carveout_heap->pool = gen_pool_create(12, -1);
- if (!carveout_heap->pool) {
- kfree(carveout_heap);
- return ERR_PTR(-ENOMEM);
- }
- carveout_heap->base = heap_data->base;
- gen_pool_add(carveout_heap->pool, carveout_heap->base, heap_data->size,
- -1);
- carveout_heap->heap.ops = &carveout_heap_ops;
- carveout_heap->heap.type = ION_HEAP_TYPE_CARVEOUT;
-
- return &carveout_heap->heap;
-}
-
-void ion_carveout_heap_destroy(struct ion_heap *heap)
-{
- struct ion_carveout_heap *carveout_heap =
- container_of(heap, struct ion_carveout_heap, heap);
-
- gen_pool_destroy(carveout_heap->pool);
- kfree(carveout_heap);
- carveout_heap = NULL;
-}
diff --git a/ANDROID_3.4.5/drivers/gpu/ion/ion_heap.c b/ANDROID_3.4.5/drivers/gpu/ion/ion_heap.c
deleted file mode 100644
index 8ce3c190..00000000
--- a/ANDROID_3.4.5/drivers/gpu/ion/ion_heap.c
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * drivers/gpu/ion/ion_heap.c
- *
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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/err.h>
-#include <linux/ion.h>
-#include "ion_priv.h"
-
-struct ion_heap *ion_heap_create(struct ion_platform_heap *heap_data)
-{
- struct ion_heap *heap = NULL;
-
- switch (heap_data->type) {
- case ION_HEAP_TYPE_SYSTEM_CONTIG:
- heap = ion_system_contig_heap_create(heap_data);
- break;
- case ION_HEAP_TYPE_SYSTEM:
- heap = ion_system_heap_create(heap_data);
- break;
- case ION_HEAP_TYPE_CARVEOUT:
- heap = ion_carveout_heap_create(heap_data);
- break;
- default:
- pr_err("%s: Invalid heap type %d\n", __func__,
- heap_data->type);
- return ERR_PTR(-EINVAL);
- }
-
- if (IS_ERR_OR_NULL(heap)) {
- pr_err("%s: error creating heap %s type %d base %lu size %u\n",
- __func__, heap_data->name, heap_data->type,
- heap_data->base, heap_data->size);
- return ERR_PTR(-EINVAL);
- }
-
- heap->name = heap_data->name;
- heap->id = heap_data->id;
- return heap;
-}
-
-void ion_heap_destroy(struct ion_heap *heap)
-{
- if (!heap)
- return;
-
- switch (heap->type) {
- case ION_HEAP_TYPE_SYSTEM_CONTIG:
- ion_system_contig_heap_destroy(heap);
- break;
- case ION_HEAP_TYPE_SYSTEM:
- ion_system_heap_destroy(heap);
- break;
- case ION_HEAP_TYPE_CARVEOUT:
- ion_carveout_heap_destroy(heap);
- break;
- default:
- pr_err("%s: Invalid heap type %d\n", __func__,
- heap->type);
- }
-}
diff --git a/ANDROID_3.4.5/drivers/gpu/ion/ion_page_pool.c b/ANDROID_3.4.5/drivers/gpu/ion/ion_page_pool.c
deleted file mode 100644
index cd57b30e..00000000
--- a/ANDROID_3.4.5/drivers/gpu/ion/ion_page_pool.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/*
- * drivers/gpu/ion/ion_mem_pool.c
- *
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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/debugfs.h>
-#include <linux/dma-mapping.h>
-#include <linux/err.h>
-#include <linux/fs.h>
-#include <linux/list.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/shrinker.h>
-#include "ion_priv.h"
-
-/* #define DEBUG_PAGE_POOL_SHRINKER */
-
-static struct plist_head pools = PLIST_HEAD_INIT(pools);
-static struct shrinker shrinker;
-
-struct ion_page_pool_item {
- struct page *page;
- struct list_head list;
-};
-
-static void *ion_page_pool_alloc_pages(struct ion_page_pool *pool)
-{
- struct page *page = alloc_pages(pool->gfp_mask, pool->order);
-
- if (!page)
- return NULL;
- /* this is only being used to flush the page for dma,
- this api is not really suitable for calling from a driver
- but no better way to flush a page for dma exist at this time */
- __dma_page_cpu_to_dev(page, 0, PAGE_SIZE << pool->order,
- DMA_BIDIRECTIONAL);
- return page;
-}
-
-static void ion_page_pool_free_pages(struct ion_page_pool *pool,
- struct page *page)
-{
- __free_pages(page, pool->order);
-}
-
-static int ion_page_pool_add(struct ion_page_pool *pool, struct page *page)
-{
- struct ion_page_pool_item *item;
-
- item = kmalloc(sizeof(struct ion_page_pool_item), GFP_KERNEL);
- if (!item)
- return -ENOMEM;
-
- mutex_lock(&pool->mutex);
- item->page = page;
- if (PageHighMem(page)) {
- list_add_tail(&item->list, &pool->high_items);
- pool->high_count++;
- } else {
- list_add_tail(&item->list, &pool->low_items);
- pool->low_count++;
- }
- mutex_unlock(&pool->mutex);
- return 0;
-}
-
-static struct page *ion_page_pool_remove(struct ion_page_pool *pool, bool high)
-{
- struct ion_page_pool_item *item;
- struct page *page;
-
- if (high) {
- BUG_ON(!pool->high_count);
- item = list_first_entry(&pool->high_items,
- struct ion_page_pool_item, list);
- pool->high_count--;
- } else {
- BUG_ON(!pool->low_count);
- item = list_first_entry(&pool->low_items,
- struct ion_page_pool_item, list);
- pool->low_count--;
- }
-
- list_del(&item->list);
- page = item->page;
- kfree(item);
- return page;
-}
-
-void *ion_page_pool_alloc(struct ion_page_pool *pool)
-{
- struct page *page = NULL;
-
- BUG_ON(!pool);
-
- mutex_lock(&pool->mutex);
- if (pool->high_count)
- page = ion_page_pool_remove(pool, true);
- else if (pool->low_count)
- page = ion_page_pool_remove(pool, false);
- mutex_unlock(&pool->mutex);
-
- if (!page)
- page = ion_page_pool_alloc_pages(pool);
-
- return page;
-}
-
-void ion_page_pool_free(struct ion_page_pool *pool, struct page* page)
-{
- int ret;
-
- ret = ion_page_pool_add(pool, page);
- if (ret)
- ion_page_pool_free_pages(pool, page);
-}
-
-#ifdef DEBUG_PAGE_POOL_SHRINKER
-static int debug_drop_pools_set(void *data, u64 val)
-{
- struct shrink_control sc;
- int objs;
-
- sc.gfp_mask = -1;
- sc.nr_to_scan = 0;
-
- if (!val)
- return 0;
-
- objs = shrinker.shrink(&shrinker, &sc);
- sc.nr_to_scan = objs;
-
- shrinker.shrink(&shrinker, &sc);
- return 0;
-}
-
-static int debug_drop_pools_get(void *data, u64 *val)
-{
- struct shrink_control sc;
- int objs;
-
- sc.gfp_mask = -1;
- sc.nr_to_scan = 0;
-
- objs = shrinker.shrink(&shrinker, &sc);
- *val = objs;
- return 0;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(debug_drop_pools_fops, debug_drop_pools_get,
- debug_drop_pools_set, "%llu\n");
-
-static int debug_grow_pools_set(void *data, u64 val)
-{
- struct ion_page_pool *pool;
- struct page *page;
-
- plist_for_each_entry(pool, &pools, list) {
- if (val != pool->list.prio)
- continue;
- page = ion_page_pool_alloc_pages(pool);
- if (page)
- ion_page_pool_add(pool, page);
- }
-
- return 0;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(debug_grow_pools_fops, debug_drop_pools_get,
- debug_grow_pools_set, "%llu\n");
-#endif
-
-static int ion_page_pool_total(bool high)
-{
- struct ion_page_pool *pool;
- int total = 0;
-
- plist_for_each_entry(pool, &pools, list) {
- total += high ? (pool->high_count + pool->low_count) *
- (1 << pool->order) :
- pool->low_count * (1 << pool->order);
- }
- return total;
-}
-
-static int ion_page_pool_shrink(struct shrinker *shrinker,
- struct shrink_control *sc)
-{
- struct ion_page_pool *pool;
- int nr_freed = 0;
- int i;
- bool high;
- int nr_to_scan = sc->nr_to_scan;
-
- if (sc->gfp_mask & __GFP_HIGHMEM)
- high = true;
-
- if (nr_to_scan == 0)
- return ion_page_pool_total(high);
-
- plist_for_each_entry(pool, &pools, list) {
- for (i = 0; i < nr_to_scan; i++) {
- struct page *page;
-
- mutex_lock(&pool->mutex);
- if (high && pool->high_count) {
- page = ion_page_pool_remove(pool, true);
- } else if (pool->low_count) {
- page = ion_page_pool_remove(pool, false);
- } else {
- mutex_unlock(&pool->mutex);
- break;
- }
- mutex_unlock(&pool->mutex);
- ion_page_pool_free_pages(pool, page);
- nr_freed += (1 << pool->order);
- }
- nr_to_scan -= i;
- }
-
- return ion_page_pool_total(high);
-}
-
-struct ion_page_pool *ion_page_pool_create(gfp_t gfp_mask, unsigned int order)
-{
- struct ion_page_pool *pool = kmalloc(sizeof(struct ion_page_pool),
- GFP_KERNEL);
- if (!pool)
- return NULL;
- pool->high_count = 0;
- pool->low_count = 0;
- INIT_LIST_HEAD(&pool->low_items);
- INIT_LIST_HEAD(&pool->high_items);
- pool->gfp_mask = gfp_mask;
- pool->order = order;
- mutex_init(&pool->mutex);
- plist_node_init(&pool->list, order);
- plist_add(&pool->list, &pools);
-
- return pool;
-}
-
-void ion_page_pool_destroy(struct ion_page_pool *pool)
-{
- plist_del(&pool->list, &pools);
- kfree(pool);
-}
-
-static int __init ion_page_pool_init(void)
-{
- shrinker.shrink = ion_page_pool_shrink;
- shrinker.seeks = DEFAULT_SEEKS;
- shrinker.batch = 0;
- register_shrinker(&shrinker);
-#ifdef DEBUG_PAGE_POOL_SHRINKER
- debugfs_create_file("ion_pools_shrink", 0644, NULL, NULL,
- &debug_drop_pools_fops);
- debugfs_create_file("ion_pools_grow", 0644, NULL, NULL,
- &debug_grow_pools_fops);
-#endif
- return 0;
-}
-
-static void __exit ion_page_pool_exit(void)
-{
- unregister_shrinker(&shrinker);
-}
-
-module_init(ion_page_pool_init);
-module_exit(ion_page_pool_exit);
diff --git a/ANDROID_3.4.5/drivers/gpu/ion/ion_priv.h b/ANDROID_3.4.5/drivers/gpu/ion/ion_priv.h
deleted file mode 100644
index 21c19630..00000000
--- a/ANDROID_3.4.5/drivers/gpu/ion/ion_priv.h
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * drivers/gpu/ion/ion_priv.h
- *
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#ifndef _ION_PRIV_H
-#define _ION_PRIV_H
-
-#include <linux/ion.h>
-#include <linux/kref.h>
-#include <linux/mm_types.h>
-#include <linux/mutex.h>
-#include <linux/rbtree.h>
-#include <linux/sched.h>
-#include <linux/shrinker.h>
-#include <linux/types.h>
-
-struct ion_buffer *ion_handle_buffer(struct ion_handle *handle);
-
-/**
- * struct ion_buffer - metadata for a particular buffer
- * @ref: refernce count
- * @node: node in the ion_device buffers tree
- * @dev: back pointer to the ion_device
- * @heap: back pointer to the heap the buffer came from
- * @flags: buffer specific flags
- * @size: size of the buffer
- * @priv_virt: private data to the buffer representable as
- * a void *
- * @priv_phys: private data to the buffer representable as
- * an ion_phys_addr_t (and someday a phys_addr_t)
- * @lock: protects the buffers cnt fields
- * @kmap_cnt: number of times the buffer is mapped to the kernel
- * @vaddr: the kenrel mapping if kmap_cnt is not zero
- * @dmap_cnt: number of times the buffer is mapped for dma
- * @sg_table: the sg table for the buffer if dmap_cnt is not zero
- * @dirty: bitmask representing which pages of this buffer have
- * been dirtied by the cpu and need cache maintenance
- * before dma
- * @vmas: list of vma's mapping this buffer
- * @handle_count: count of handles referencing this buffer
- * @task_comm: taskcomm of last client to reference this buffer in a
- * handle, used for debugging
- * @pid: pid of last client to reference this buffer in a
- * handle, used for debugging
-*/
-struct ion_buffer {
- struct kref ref;
- struct rb_node node;
- struct ion_device *dev;
- struct ion_heap *heap;
- unsigned long flags;
- size_t size;
- union {
- void *priv_virt;
- ion_phys_addr_t priv_phys;
- };
- struct mutex lock;
- int kmap_cnt;
- void *vaddr;
- int dmap_cnt;
- struct sg_table *sg_table;
- unsigned long *dirty;
- struct list_head vmas;
- /* used to track orphaned buffers */
- int handle_count;
- char task_comm[TASK_COMM_LEN];
- pid_t pid;
-};
-
-/**
- * struct ion_heap_ops - ops to operate on a given heap
- * @allocate: allocate memory
- * @free: free memory
- * @phys get physical address of a buffer (only define on
- * physically contiguous heaps)
- * @map_dma map the memory for dma to a scatterlist
- * @unmap_dma unmap the memory for dma
- * @map_kernel map memory to the kernel
- * @unmap_kernel unmap memory to the kernel
- * @map_user map memory to userspace
- */
-struct ion_heap_ops {
- int (*allocate) (struct ion_heap *heap,
- struct ion_buffer *buffer, unsigned long len,
- unsigned long align, unsigned long flags);
- void (*free) (struct ion_buffer *buffer);
- int (*phys) (struct ion_heap *heap, struct ion_buffer *buffer,
- ion_phys_addr_t *addr, size_t *len);
- struct sg_table *(*map_dma) (struct ion_heap *heap,
- struct ion_buffer *buffer);
- void (*unmap_dma) (struct ion_heap *heap, struct ion_buffer *buffer);
- void * (*map_kernel) (struct ion_heap *heap, struct ion_buffer *buffer);
- void (*unmap_kernel) (struct ion_heap *heap, struct ion_buffer *buffer);
- int (*map_user) (struct ion_heap *mapper, struct ion_buffer *buffer,
- struct vm_area_struct *vma);
-};
-
-/**
- * struct ion_heap - represents a heap in the system
- * @node: rb node to put the heap on the device's tree of heaps
- * @dev: back pointer to the ion_device
- * @type: type of heap
- * @ops: ops struct as above
- * @id: id of heap, also indicates priority of this heap when
- * allocating. These are specified by platform data and
- * MUST be unique
- * @name: used for debugging
- * @debug_show: called when heap debug file is read to add any
- * heap specific debug info to output
- *
- * Represents a pool of memory from which buffers can be made. In some
- * systems the only heap is regular system memory allocated via vmalloc.
- * On others, some blocks might require large physically contiguous buffers
- * that are allocated from a specially reserved heap.
- */
-struct ion_heap {
- struct rb_node node;
- struct ion_device *dev;
- enum ion_heap_type type;
- struct ion_heap_ops *ops;
- int id;
- const char *name;
- int (*debug_show)(struct ion_heap *heap, struct seq_file *, void *);
-};
-
-/**
- * ion_buffer_cached - this ion buffer is cached
- * @buffer: buffer
- *
- * indicates whether this ion buffer is cached
- */
-bool ion_buffer_cached(struct ion_buffer *buffer);
-
-/**
- * ion_buffer_fault_user_mappings - fault in user mappings of this buffer
- * @buffer: buffer
- *
- * indicates whether userspace mappings of this buffer will be faulted
- * in, this can affect how buffers are allocated from the heap.
- */
-bool ion_buffer_fault_user_mappings(struct ion_buffer *buffer);
-
-/**
- * ion_device_create - allocates and returns an ion device
- * @custom_ioctl: arch specific ioctl function if applicable
- *
- * returns a valid device or -PTR_ERR
- */
-struct ion_device *ion_device_create(long (*custom_ioctl)
- (struct ion_client *client,
- unsigned int cmd,
- unsigned long arg));
-
-/**
- * ion_device_destroy - free and device and it's resource
- * @dev: the device
- */
-void ion_device_destroy(struct ion_device *dev);
-
-/**
- * ion_device_add_heap - adds a heap to the ion device
- * @dev: the device
- * @heap: the heap to add
- */
-void ion_device_add_heap(struct ion_device *dev, struct ion_heap *heap);
-
-/**
- * functions for creating and destroying the built in ion heaps.
- * architectures can add their own custom architecture specific
- * heaps as appropriate.
- */
-
-struct ion_heap *ion_heap_create(struct ion_platform_heap *);
-void ion_heap_destroy(struct ion_heap *);
-
-struct ion_heap *ion_system_heap_create(struct ion_platform_heap *);
-void ion_system_heap_destroy(struct ion_heap *);
-
-struct ion_heap *ion_system_contig_heap_create(struct ion_platform_heap *);
-void ion_system_contig_heap_destroy(struct ion_heap *);
-
-struct ion_heap *ion_carveout_heap_create(struct ion_platform_heap *);
-void ion_carveout_heap_destroy(struct ion_heap *);
-/**
- * kernel api to allocate/free from carveout -- used when carveout is
- * used to back an architecture specific custom heap
- */
-ion_phys_addr_t ion_carveout_allocate(struct ion_heap *heap, unsigned long size,
- unsigned long align);
-void ion_carveout_free(struct ion_heap *heap, ion_phys_addr_t addr,
- unsigned long size);
-/**
- * The carveout heap returns physical addresses, since 0 may be a valid
- * physical address, this is used to indicate allocation failed
- */
-#define ION_CARVEOUT_ALLOCATE_FAIL -1
-
-/**
- * functions for creating and destroying a heap pool -- allows you
- * to keep a pool of pre allocated memory to use from your heap. Keeping
- * a pool of memory that is ready for dma, ie any cached mapping have been
- * invalidated from the cache, provides a significant peformance benefit on
- * many systems */
-
-/**
- * struct ion_page_pool - pagepool struct
- * @high_count: number of highmem items in the pool
- * @low_count: number of lowmem items in the pool
- * @high_items: list of highmem items
- * @low_items: list of lowmem items
- * @shrinker: a shrinker for the items
- * @mutex: lock protecting this struct and especially the count
- * item list
- * @alloc: function to be used to allocate pageory when the pool
- * is empty
- * @free: function to be used to free pageory back to the system
- * when the shrinker fires
- * @gfp_mask: gfp_mask to use from alloc
- * @order: order of pages in the pool
- * @list: plist node for list of pools
- *
- * Allows you to keep a pool of pre allocated pages to use from your heap.
- * Keeping a pool of pages that is ready for dma, ie any cached mapping have
- * been invalidated from the cache, provides a significant peformance benefit
- * on many systems
- */
-struct ion_page_pool {
- int high_count;
- int low_count;
- struct list_head high_items;
- struct list_head low_items;
- struct mutex mutex;
- void *(*alloc)(struct ion_page_pool *pool);
- void (*free)(struct ion_page_pool *pool, struct page *page);
- gfp_t gfp_mask;
- unsigned int order;
- struct plist_node list;
-};
-
-struct ion_page_pool *ion_page_pool_create(gfp_t gfp_mask, unsigned int order);
-void ion_page_pool_destroy(struct ion_page_pool *);
-void *ion_page_pool_alloc(struct ion_page_pool *);
-void ion_page_pool_free(struct ion_page_pool *, struct page *);
-
-#endif /* _ION_PRIV_H */
diff --git a/ANDROID_3.4.5/drivers/gpu/ion/ion_system_heap.c b/ANDROID_3.4.5/drivers/gpu/ion/ion_system_heap.c
deleted file mode 100644
index 2a85df9e..00000000
--- a/ANDROID_3.4.5/drivers/gpu/ion/ion_system_heap.c
+++ /dev/null
@@ -1,492 +0,0 @@
-/*
- * drivers/gpu/ion/ion_system_heap.c
- *
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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 <asm/page.h>
-#include <linux/dma-mapping.h>
-#include <linux/err.h>
-#include <linux/highmem.h>
-#include <linux/ion.h>
-#include <linux/mm.h>
-#include <linux/scatterlist.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include "ion_priv.h"
-
-static unsigned int high_order_gfp_flags = (GFP_HIGHUSER | __GFP_ZERO |
- __GFP_NOWARN | __GFP_NORETRY |
- __GFP_NO_KSWAPD) & ~__GFP_WAIT;
-static unsigned int low_order_gfp_flags = (GFP_HIGHUSER | __GFP_ZERO |
- __GFP_NOWARN);
-static const unsigned int orders[] = {8, 4, 0};
-static const int num_orders = ARRAY_SIZE(orders);
-static int order_to_index(unsigned int order)
-{
- int i;
- for (i = 0; i < num_orders; i++)
- if (order == orders[i])
- return i;
- BUG();
- return -1;
-}
-
-static unsigned int order_to_size(int order)
-{
- return PAGE_SIZE << order;
-}
-
-struct ion_system_heap {
- struct ion_heap heap;
- struct ion_page_pool **pools;
-};
-
-struct page_info {
- struct page *page;
- unsigned int order;
- struct list_head list;
-};
-
-static struct page *alloc_buffer_page(struct ion_system_heap *heap,
- struct ion_buffer *buffer,
- unsigned long order)
-{
- bool cached = ion_buffer_cached(buffer);
- bool split_pages = ion_buffer_fault_user_mappings(buffer);
- struct ion_page_pool *pool = heap->pools[order_to_index(order)];
- struct page *page;
-
- if (!cached) {
- page = ion_page_pool_alloc(pool);
- } else {
- gfp_t gfp_flags = low_order_gfp_flags;
-
- if (order > 4)
- gfp_flags = high_order_gfp_flags;
- page = alloc_pages(gfp_flags, order);
- if (!page)
- return 0;
- __dma_page_cpu_to_dev(page, 0, PAGE_SIZE << order,
- DMA_BIDIRECTIONAL);
- }
- if (!page)
- return 0;
-
- if (split_pages)
- split_page(page, order);
- return page;
-}
-
-static void free_buffer_page(struct ion_system_heap *heap,
- struct ion_buffer *buffer, struct page *page,
- unsigned int order)
-{
- bool cached = ion_buffer_cached(buffer);
- bool split_pages = ion_buffer_fault_user_mappings(buffer);
- int i;
-
- if (!cached) {
- struct ion_page_pool *pool = heap->pools[order_to_index(order)];
- /* zero the pages before returning them to the pool for
- security. This uses vmap as we want to set the pgprot so
- the writes to occur to noncached mappings, as the pool's
- purpose is to keep the pages out of the cache */
- for (i = 0; i < (1 << order); i++) {
- struct page *sub_page = page + i;
- void *addr = vmap(&sub_page, 1, VM_MAP,
- pgprot_writecombine(PAGE_KERNEL));
- memset(addr, 0, PAGE_SIZE);
- vunmap(addr);
- }
- ion_page_pool_free(pool, page);
- } else if (split_pages) {
- for (i = 0; i < (1 << order); i++)
- __free_page(page + i);
- } else {
- __free_pages(page, order);
- }
-}
-
-
-static struct page_info *alloc_largest_available(struct ion_system_heap *heap,
- struct ion_buffer *buffer,
- unsigned long size,
- unsigned int max_order)
-{
- struct page *page;
- struct page_info *info;
- int i;
-
- for (i = 0; i < num_orders; i++) {
- if (size < order_to_size(orders[i]))
- continue;
- if (max_order < orders[i])
- continue;
-
- page = alloc_buffer_page(heap, buffer, orders[i]);
- if (!page)
- continue;
-
- info = kmalloc(sizeof(struct page_info), GFP_KERNEL);
- info->page = page;
- info->order = orders[i];
- return info;
- }
- return NULL;
-}
-
-static int ion_system_heap_allocate(struct ion_heap *heap,
- struct ion_buffer *buffer,
- unsigned long size, unsigned long align,
- unsigned long flags)
-{
- struct ion_system_heap *sys_heap = container_of(heap,
- struct ion_system_heap,
- heap);
- struct sg_table *table;
- struct scatterlist *sg;
- int ret;
- struct list_head pages;
- struct page_info *info, *tmp_info;
- int i = 0;
- long size_remaining = PAGE_ALIGN(size);
- unsigned int max_order = orders[0];
- bool split_pages = ion_buffer_fault_user_mappings(buffer);
-
- INIT_LIST_HEAD(&pages);
- while (size_remaining > 0) {
- info = alloc_largest_available(sys_heap, buffer, size_remaining, max_order);
- if (!info)
- goto err;
- list_add_tail(&info->list, &pages);
- size_remaining -= (1 << info->order) * PAGE_SIZE;
- max_order = info->order;
- i++;
- }
-
- table = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
- if (!table)
- goto err;
-
- if (split_pages)
- ret = sg_alloc_table(table, PAGE_ALIGN(size) / PAGE_SIZE,
- GFP_KERNEL);
- else
- ret = sg_alloc_table(table, i, GFP_KERNEL);
-
- if (ret)
- goto err1;
-
- sg = table->sgl;
- list_for_each_entry_safe(info, tmp_info, &pages, list) {
- struct page *page = info->page;
- if (split_pages) {
- for (i = 0; i < (1 << info->order); i++) {
- sg_set_page(sg, page + i, PAGE_SIZE, 0);
- sg = sg_next(sg);
- }
- } else {
- sg_set_page(sg, page, (1 << info->order) * PAGE_SIZE,
- 0);
- sg = sg_next(sg);
- }
- list_del(&info->list);
- kfree(info);
- }
-
- buffer->priv_virt = table;
- return 0;
-err1:
- kfree(table);
-err:
- list_for_each_entry(info, &pages, list) {
- free_buffer_page(sys_heap, buffer, info->page, info->order);
- kfree(info);
- }
- return -ENOMEM;
-}
-
-void ion_system_heap_free(struct ion_buffer *buffer)
-{
- struct ion_heap *heap = buffer->heap;
- struct ion_system_heap *sys_heap = container_of(heap,
- struct ion_system_heap,
- heap);
- struct sg_table *table = buffer->priv_virt;
- struct scatterlist *sg;
- LIST_HEAD(pages);
- int i;
-
- for_each_sg(table->sgl, sg, table->nents, i)
- free_buffer_page(sys_heap, buffer, sg_page(sg), get_order(sg_dma_len(sg)));
- sg_free_table(table);
- kfree(table);
-}
-
-struct sg_table *ion_system_heap_map_dma(struct ion_heap *heap,
- struct ion_buffer *buffer)
-{
- return buffer->priv_virt;
-}
-
-void ion_system_heap_unmap_dma(struct ion_heap *heap,
- struct ion_buffer *buffer)
-{
- return;
-}
-
-void *ion_system_heap_map_kernel(struct ion_heap *heap,
- struct ion_buffer *buffer)
-{
- struct scatterlist *sg;
- int i, j;
- void *vaddr;
- pgprot_t pgprot;
- struct sg_table *table = buffer->priv_virt;
- int npages = PAGE_ALIGN(buffer->size) / PAGE_SIZE;
- struct page **pages = vmalloc(sizeof(struct page *) * npages);
- struct page **tmp = pages;
-
- if (!pages)
- return 0;
-
- if (buffer->flags & ION_FLAG_CACHED)
- pgprot = PAGE_KERNEL;
- else
- pgprot = pgprot_writecombine(PAGE_KERNEL);
-
- for_each_sg(table->sgl, sg, table->nents, i) {
- int npages_this_entry = PAGE_ALIGN(sg_dma_len(sg)) / PAGE_SIZE;
- struct page *page = sg_page(sg);
- BUG_ON(i >= npages);
- for (j = 0; j < npages_this_entry; j++) {
- *(tmp++) = page++;
- }
- }
- vaddr = vmap(pages, npages, VM_MAP, pgprot);
- vfree(pages);
-
- return vaddr;
-}
-
-void ion_system_heap_unmap_kernel(struct ion_heap *heap,
- struct ion_buffer *buffer)
-{
- vunmap(buffer->vaddr);
-}
-
-int ion_system_heap_map_user(struct ion_heap *heap, struct ion_buffer *buffer,
- struct vm_area_struct *vma)
-{
- struct sg_table *table = buffer->priv_virt;
- unsigned long addr = vma->vm_start;
- unsigned long offset = vma->vm_pgoff * PAGE_SIZE;
- struct scatterlist *sg;
- int i;
-
- for_each_sg(table->sgl, sg, table->nents, i) {
- struct page *page = sg_page(sg);
- unsigned long remainder = vma->vm_end - addr;
- unsigned long len = sg_dma_len(sg);
-
- if (offset >= sg_dma_len(sg)) {
- offset -= sg_dma_len(sg);
- continue;
- } else if (offset) {
- page += offset / PAGE_SIZE;
- len = sg_dma_len(sg) - offset;
- offset = 0;
- }
- len = min(len, remainder);
- remap_pfn_range(vma, addr, page_to_pfn(page), len,
- vma->vm_page_prot);
- addr += len;
- if (addr >= vma->vm_end)
- return 0;
- }
- return 0;
-}
-
-static struct ion_heap_ops system_heap_ops = {
- .allocate = ion_system_heap_allocate,
- .free = ion_system_heap_free,
- .map_dma = ion_system_heap_map_dma,
- .unmap_dma = ion_system_heap_unmap_dma,
- .map_kernel = ion_system_heap_map_kernel,
- .unmap_kernel = ion_system_heap_unmap_kernel,
- .map_user = ion_system_heap_map_user,
-};
-
-static int ion_system_heap_debug_show(struct ion_heap *heap, struct seq_file *s,
- void *unused)
-{
-
- struct ion_system_heap *sys_heap = container_of(heap,
- struct ion_system_heap,
- heap);
- int i;
- for (i = 0; i < num_orders; i++) {
- struct ion_page_pool *pool = sys_heap->pools[i];
- seq_printf(s, "%d order %u highmem pages in pool = %lu total\n",
- pool->high_count, pool->order,
- (1 << pool->order) * PAGE_SIZE * pool->high_count);
- seq_printf(s, "%d order %u lowmem pages in pool = %lu total\n",
- pool->low_count, pool->order,
- (1 << pool->order) * PAGE_SIZE * pool->low_count);
- }
- return 0;
-}
-
-struct ion_heap *ion_system_heap_create(struct ion_platform_heap *unused)
-{
- struct ion_system_heap *heap;
- int i;
-
- heap = kzalloc(sizeof(struct ion_system_heap), GFP_KERNEL);
- if (!heap)
- return ERR_PTR(-ENOMEM);
- heap->heap.ops = &system_heap_ops;
- heap->heap.type = ION_HEAP_TYPE_SYSTEM;
- heap->pools = kzalloc(sizeof(struct ion_page_pool *) * num_orders,
- GFP_KERNEL);
- if (!heap->pools)
- goto err_alloc_pools;
- for (i = 0; i < num_orders; i++) {
- struct ion_page_pool *pool;
- gfp_t gfp_flags = low_order_gfp_flags;
-
- if (orders[i] > 4)
- gfp_flags = high_order_gfp_flags;
- pool = ion_page_pool_create(gfp_flags, orders[i]);
- if (!pool)
- goto err_create_pool;
- heap->pools[i] = pool;
- }
- heap->heap.debug_show = ion_system_heap_debug_show;
- return &heap->heap;
-err_create_pool:
- for (i = 0; i < num_orders; i++)
- if (heap->pools[i])
- ion_page_pool_destroy(heap->pools[i]);
- kfree(heap->pools);
-err_alloc_pools:
- kfree(heap);
- return ERR_PTR(-ENOMEM);
-}
-
-void ion_system_heap_destroy(struct ion_heap *heap)
-{
- struct ion_system_heap *sys_heap = container_of(heap,
- struct ion_system_heap,
- heap);
- int i;
-
- for (i = 0; i < num_orders; i++)
- ion_page_pool_destroy(sys_heap->pools[i]);
- kfree(sys_heap->pools);
- kfree(sys_heap);
-}
-
-static int ion_system_contig_heap_allocate(struct ion_heap *heap,
- struct ion_buffer *buffer,
- unsigned long len,
- unsigned long align,
- unsigned long flags)
-{
- buffer->priv_virt = kzalloc(len, GFP_KERNEL);
- if (!buffer->priv_virt)
- return -ENOMEM;
- return 0;
-}
-
-void ion_system_contig_heap_free(struct ion_buffer *buffer)
-{
- kfree(buffer->priv_virt);
-}
-
-static int ion_system_contig_heap_phys(struct ion_heap *heap,
- struct ion_buffer *buffer,
- ion_phys_addr_t *addr, size_t *len)
-{
- *addr = virt_to_phys(buffer->priv_virt);
- *len = buffer->size;
- return 0;
-}
-
-struct sg_table *ion_system_contig_heap_map_dma(struct ion_heap *heap,
- struct ion_buffer *buffer)
-{
- struct sg_table *table;
- int ret;
-
- table = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
- if (!table)
- return ERR_PTR(-ENOMEM);
- ret = sg_alloc_table(table, 1, GFP_KERNEL);
- if (ret) {
- kfree(table);
- return ERR_PTR(ret);
- }
- sg_set_page(table->sgl, virt_to_page(buffer->priv_virt), buffer->size,
- 0);
- return table;
-}
-
-void ion_system_contig_heap_unmap_dma(struct ion_heap *heap,
- struct ion_buffer *buffer)
-{
- sg_free_table(buffer->sg_table);
- kfree(buffer->sg_table);
-}
-
-int ion_system_contig_heap_map_user(struct ion_heap *heap,
- struct ion_buffer *buffer,
- struct vm_area_struct *vma)
-{
- unsigned long pfn = __phys_to_pfn(virt_to_phys(buffer->priv_virt));
- return remap_pfn_range(vma, vma->vm_start, pfn + vma->vm_pgoff,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot);
-
-}
-
-static struct ion_heap_ops kmalloc_ops = {
- .allocate = ion_system_contig_heap_allocate,
- .free = ion_system_contig_heap_free,
- .phys = ion_system_contig_heap_phys,
- .map_dma = ion_system_contig_heap_map_dma,
- .unmap_dma = ion_system_contig_heap_unmap_dma,
- .map_kernel = ion_system_heap_map_kernel,
- .unmap_kernel = ion_system_heap_unmap_kernel,
- .map_user = ion_system_contig_heap_map_user,
-};
-
-struct ion_heap *ion_system_contig_heap_create(struct ion_platform_heap *unused)
-{
- struct ion_heap *heap;
-
- heap = kzalloc(sizeof(struct ion_heap), GFP_KERNEL);
- if (!heap)
- return ERR_PTR(-ENOMEM);
- heap->ops = &kmalloc_ops;
- heap->type = ION_HEAP_TYPE_SYSTEM_CONTIG;
- return heap;
-}
-
-void ion_system_contig_heap_destroy(struct ion_heap *heap)
-{
- kfree(heap);
-}
-
diff --git a/ANDROID_3.4.5/drivers/gpu/ion/ion_system_mapper.c b/ANDROID_3.4.5/drivers/gpu/ion/ion_system_mapper.c
deleted file mode 100644
index 692458e0..00000000
--- a/ANDROID_3.4.5/drivers/gpu/ion/ion_system_mapper.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * drivers/gpu/ion/ion_system_mapper.c
- *
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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/err.h>
-#include <linux/ion.h>
-#include <linux/memory.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include "ion_priv.h"
-/*
- * This mapper is valid for any heap that allocates memory that already has
- * a kernel mapping, this includes vmalloc'd memory, kmalloc'd memory,
- * pages obtained via io_remap, etc.
- */
-static void *ion_kernel_mapper_map(struct ion_mapper *mapper,
- struct ion_buffer *buffer,
- struct ion_mapping **mapping)
-{
- if (!((1 << buffer->heap->type) & mapper->heap_mask)) {
- pr_err("%s: attempting to map an unsupported heap\n", __func__);
- return ERR_PTR(-EINVAL);
- }
- /* XXX REVISIT ME!!! */
- *((unsigned long *)mapping) = (unsigned long)buffer->priv;
- return buffer->priv;
-}
-
-static void ion_kernel_mapper_unmap(struct ion_mapper *mapper,
- struct ion_buffer *buffer,
- struct ion_mapping *mapping)
-{
- if (!((1 << buffer->heap->type) & mapper->heap_mask))
- pr_err("%s: attempting to unmap an unsupported heap\n",
- __func__);
-}
-
-static void *ion_kernel_mapper_map_kernel(struct ion_mapper *mapper,
- struct ion_buffer *buffer,
- struct ion_mapping *mapping)
-{
- if (!((1 << buffer->heap->type) & mapper->heap_mask)) {
- pr_err("%s: attempting to unmap an unsupported heap\n",
- __func__);
- return ERR_PTR(-EINVAL);
- }
- return buffer->priv;
-}
-
-static int ion_kernel_mapper_map_user(struct ion_mapper *mapper,
- struct ion_buffer *buffer,
- struct vm_area_struct *vma,
- struct ion_mapping *mapping)
-{
- int ret;
-
- switch (buffer->heap->type) {
- case ION_HEAP_KMALLOC:
- {
- unsigned long pfn = __phys_to_pfn(virt_to_phys(buffer->priv));
- ret = remap_pfn_range(vma, vma->vm_start, pfn + vma->vm_pgoff,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot);
- break;
- }
- case ION_HEAP_VMALLOC:
- ret = remap_vmalloc_range(vma, buffer->priv, vma->vm_pgoff);
- break;
- default:
- pr_err("%s: attempting to map unsupported heap to userspace\n",
- __func__);
- return -EINVAL;
- }
-
- return ret;
-}
-
-static struct ion_mapper_ops ops = {
- .map = ion_kernel_mapper_map,
- .map_kernel = ion_kernel_mapper_map_kernel,
- .map_user = ion_kernel_mapper_map_user,
- .unmap = ion_kernel_mapper_unmap,
-};
-
-struct ion_mapper *ion_system_mapper_create(void)
-{
- struct ion_mapper *mapper;
- mapper = kzalloc(sizeof(struct ion_mapper), GFP_KERNEL);
- if (!mapper)
- return ERR_PTR(-ENOMEM);
- mapper->type = ION_SYSTEM_MAPPER;
- mapper->ops = &ops;
- mapper->heap_mask = (1 << ION_HEAP_VMALLOC) | (1 << ION_HEAP_KMALLOC);
- return mapper;
-}
-
-void ion_system_mapper_destroy(struct ion_mapper *mapper)
-{
- kfree(mapper);
-}
-
diff --git a/ANDROID_3.4.5/drivers/gpu/ion/tegra/Makefile b/ANDROID_3.4.5/drivers/gpu/ion/tegra/Makefile
deleted file mode 100644
index 11cd003f..00000000
--- a/ANDROID_3.4.5/drivers/gpu/ion/tegra/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-y += tegra_ion.o
diff --git a/ANDROID_3.4.5/drivers/gpu/ion/tegra/tegra_ion.c b/ANDROID_3.4.5/drivers/gpu/ion/tegra/tegra_ion.c
deleted file mode 100644
index 7af6e168..00000000
--- a/ANDROID_3.4.5/drivers/gpu/ion/tegra/tegra_ion.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * drivers/gpu/tegra/tegra_ion.c
- *
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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/err.h>
-#include <linux/ion.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include "../ion_priv.h"
-
-struct ion_device *idev;
-struct ion_mapper *tegra_user_mapper;
-int num_heaps;
-struct ion_heap **heaps;
-
-int tegra_ion_probe(struct platform_device *pdev)
-{
- struct ion_platform_data *pdata = pdev->dev.platform_data;
- int err;
- int i;
-
- num_heaps = pdata->nr;
-
- heaps = kzalloc(sizeof(struct ion_heap *) * pdata->nr, GFP_KERNEL);
-
- idev = ion_device_create(NULL);
- if (IS_ERR_OR_NULL(idev)) {
- kfree(heaps);
- return PTR_ERR(idev);
- }
-
- /* create the heaps as specified in the board file */
- for (i = 0; i < num_heaps; i++) {
- struct ion_platform_heap *heap_data = &pdata->heaps[i];
-
- heaps[i] = ion_heap_create(heap_data);
- if (IS_ERR_OR_NULL(heaps[i])) {
- err = PTR_ERR(heaps[i]);
- goto err;
- }
- ion_device_add_heap(idev, heaps[i]);
- }
- platform_set_drvdata(pdev, idev);
- return 0;
-err:
- for (i = 0; i < num_heaps; i++) {
- if (heaps[i])
- ion_heap_destroy(heaps[i]);
- }
- kfree(heaps);
- return err;
-}
-
-int tegra_ion_remove(struct platform_device *pdev)
-{
- struct ion_device *idev = platform_get_drvdata(pdev);
- int i;
-
- ion_device_destroy(idev);
- for (i = 0; i < num_heaps; i++)
- ion_heap_destroy(heaps[i]);
- kfree(heaps);
- return 0;
-}
-
-static struct platform_driver ion_driver = {
- .probe = tegra_ion_probe,
- .remove = tegra_ion_remove,
- .driver = { .name = "ion-tegra" }
-};
-
-static int __init ion_init(void)
-{
- return platform_driver_register(&ion_driver);
-}
-
-static void __exit ion_exit(void)
-{
- platform_driver_unregister(&ion_driver);
-}
-
-module_init(ion_init);
-module_exit(ion_exit);
-
generated by cgit (git 2.34.1) at 2025-07-15 22:16:27 +0000