If you're not using Android its probably safe to
say N here.
-config ION_TEST
- tristate "Ion Test Device"
- depends on ION
- help
- Choose this option to create a device that can be used to test the
- kernel and device side ION functions.
-
-config ION_DUMMY
- bool "Dummy Ion driver"
- depends on ION
- help
- Provides a dummy ION driver that registers the
- /dev/ion device and some basic heaps. This can
- be used for testing the ION infrastructure if
- one doesn't have access to hardware drivers that
- use ION.
-
-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.
-
-config ION_HISI
- tristate "Ion for Hisilicon"
- depends on ARCH_HISI && ION
- select ION_OF
- help
- Choose this option if you wish to use ion on Hisilicon Platform.
-
-source "drivers/staging/android/ion/hisilicon/Kconfig"
-
-config ION_OF
- bool "Devicetree support for Ion"
- depends on ION && OF_ADDRESS
- help
- Provides base support for defining Ion heaps in devicetree
- and setting them up. Also includes functions for platforms
- to parse the devicetree and expand for their own custom
- extensions
-
- If using Ion and devicetree, you should say Y here
obj-$(CONFIG_ION) += ion.o ion-ioctl.o ion_heap.o \
ion_page_pool.o ion_system_heap.o \
ion_carveout_heap.o ion_chunk_heap.o ion_cma_heap.o
-obj-$(CONFIG_ION_TEST) += ion_test.o
ifdef CONFIG_COMPAT
obj-$(CONFIG_ION) += compat_ion.o
endif
-
-obj-$(CONFIG_ION_DUMMY) += ion_dummy_driver.o
-obj-$(CONFIG_ION_TEGRA) += tegra/
-obj-$(CONFIG_ION_HISI) += hisilicon/
-obj-$(CONFIG_ION_OF) += ion_of.o
-
+++ /dev/null
-config HI6220_ION
- bool "Hi6220 ION Driver"
- depends on ARCH_HISI && ION
- help
- Build the Hisilicon Hi6220 ion driver.
+++ /dev/null
-obj-$(CONFIG_HI6220_ION) += hi6220_ion.o
+++ /dev/null
-/*
- * Hisilicon Hi6220 ION Driver
- *
- * Copyright (c) 2015 Hisilicon Limited.
- *
- * Author: Chen Feng <puck.chen@hisilicon.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#define pr_fmt(fmt) "Ion: " fmt
-
-#include <linux/err.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/mm.h>
-#include "../ion_priv.h"
-#include "../ion.h"
-#include "../ion_of.h"
-
-struct hisi_ion_dev {
- struct ion_heap **heaps;
- struct ion_device *idev;
- struct ion_platform_data *data;
-};
-
-static struct ion_of_heap hisi_heaps[] = {
- PLATFORM_HEAP("hisilicon,sys_user", 0,
- ION_HEAP_TYPE_SYSTEM, "sys_user"),
- PLATFORM_HEAP("hisilicon,sys_contig", 1,
- ION_HEAP_TYPE_SYSTEM_CONTIG, "sys_contig"),
- PLATFORM_HEAP("hisilicon,cma", ION_HEAP_TYPE_DMA, ION_HEAP_TYPE_DMA,
- "cma"),
- {}
-};
-
-static int hi6220_ion_probe(struct platform_device *pdev)
-{
- struct hisi_ion_dev *ipdev;
- int i;
-
- ipdev = devm_kzalloc(&pdev->dev, sizeof(*ipdev), GFP_KERNEL);
- if (!ipdev)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, ipdev);
-
- ipdev->idev = ion_device_create(NULL);
- if (IS_ERR(ipdev->idev))
- return PTR_ERR(ipdev->idev);
-
- ipdev->data = ion_parse_dt(pdev, hisi_heaps);
- if (IS_ERR(ipdev->data))
- return PTR_ERR(ipdev->data);
-
- ipdev->heaps = devm_kzalloc(&pdev->dev,
- sizeof(struct ion_heap) * ipdev->data->nr,
- GFP_KERNEL);
- if (!ipdev->heaps) {
- ion_destroy_platform_data(ipdev->data);
- return -ENOMEM;
- }
-
- for (i = 0; i < ipdev->data->nr; i++) {
- ipdev->heaps[i] = ion_heap_create(&ipdev->data->heaps[i]);
- if (!ipdev->heaps) {
- ion_destroy_platform_data(ipdev->data);
- return -ENOMEM;
- }
- ion_device_add_heap(ipdev->idev, ipdev->heaps[i]);
- }
- return 0;
-}
-
-static int hi6220_ion_remove(struct platform_device *pdev)
-{
- struct hisi_ion_dev *ipdev;
- int i;
-
- ipdev = platform_get_drvdata(pdev);
-
- for (i = 0; i < ipdev->data->nr; i++)
- ion_heap_destroy(ipdev->heaps[i]);
-
- ion_destroy_platform_data(ipdev->data);
- ion_device_destroy(ipdev->idev);
-
- return 0;
-}
-
-static const struct of_device_id hi6220_ion_match_table[] = {
- {.compatible = "hisilicon,hi6220-ion"},
- {},
-};
-
-static struct platform_driver hi6220_ion_driver = {
- .probe = hi6220_ion_probe,
- .remove = hi6220_ion_remove,
- .driver = {
- .name = "ion-hi6220",
- .of_match_table = hi6220_ion_match_table,
- },
-};
-
-static int __init hi6220_ion_init(void)
-{
- return platform_driver_register(&hi6220_ion_driver);
-}
-
-subsys_initcall(hi6220_ion_init);
+++ /dev/null
-/*
- * drivers/gpu/ion/ion_dummy_driver.c
- *
- * Copyright (C) 2013 Linaro, 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/platform_device.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/memblock.h>
-#include <linux/sizes.h>
-#include <linux/io.h>
-#include "ion.h"
-#include "ion_priv.h"
-
-static struct ion_device *idev;
-static struct ion_heap **heaps;
-
-static void *carveout_ptr;
-static void *chunk_ptr;
-
-static struct ion_platform_heap dummy_heaps[] = {
- {
- .id = ION_HEAP_TYPE_SYSTEM,
- .type = ION_HEAP_TYPE_SYSTEM,
- .name = "system",
- },
- {
- .id = ION_HEAP_TYPE_SYSTEM_CONTIG,
- .type = ION_HEAP_TYPE_SYSTEM_CONTIG,
- .name = "system contig",
- },
- {
- .id = ION_HEAP_TYPE_CARVEOUT,
- .type = ION_HEAP_TYPE_CARVEOUT,
- .name = "carveout",
- .size = SZ_4M,
- },
- {
- .id = ION_HEAP_TYPE_CHUNK,
- .type = ION_HEAP_TYPE_CHUNK,
- .name = "chunk",
- .size = SZ_4M,
- .align = SZ_16K,
- .priv = (void *)(SZ_16K),
- },
-};
-
-static const struct ion_platform_data dummy_ion_pdata = {
- .nr = ARRAY_SIZE(dummy_heaps),
- .heaps = dummy_heaps,
-};
-
-static int __init ion_dummy_init(void)
-{
- int i, err;
-
- idev = ion_device_create();
- if (IS_ERR(idev))
- return PTR_ERR(idev);
- heaps = kcalloc(dummy_ion_pdata.nr, sizeof(struct ion_heap *),
- GFP_KERNEL);
- if (!heaps)
- return -ENOMEM;
-
- /* Allocate a dummy carveout heap */
- carveout_ptr = alloc_pages_exact(
- dummy_heaps[ION_HEAP_TYPE_CARVEOUT].size,
- GFP_KERNEL);
- if (carveout_ptr)
- dummy_heaps[ION_HEAP_TYPE_CARVEOUT].base =
- virt_to_phys(carveout_ptr);
- else
- pr_err("ion_dummy: Could not allocate carveout\n");
-
- /* Allocate a dummy chunk heap */
- chunk_ptr = alloc_pages_exact(
- dummy_heaps[ION_HEAP_TYPE_CHUNK].size,
- GFP_KERNEL);
- if (chunk_ptr)
- dummy_heaps[ION_HEAP_TYPE_CHUNK].base = virt_to_phys(chunk_ptr);
- else
- pr_err("ion_dummy: Could not allocate chunk\n");
-
- for (i = 0; i < dummy_ion_pdata.nr; i++) {
- struct ion_platform_heap *heap_data = &dummy_ion_pdata.heaps[i];
-
- if (heap_data->type == ION_HEAP_TYPE_CARVEOUT &&
- !heap_data->base)
- continue;
-
- if (heap_data->type == ION_HEAP_TYPE_CHUNK && !heap_data->base)
- continue;
-
- 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]);
- }
- return 0;
-err:
- for (i = 0; i < dummy_ion_pdata.nr; ++i)
- ion_heap_destroy(heaps[i]);
- kfree(heaps);
-
- if (carveout_ptr) {
- free_pages_exact(carveout_ptr,
- dummy_heaps[ION_HEAP_TYPE_CARVEOUT].size);
- carveout_ptr = NULL;
- }
- if (chunk_ptr) {
- free_pages_exact(chunk_ptr,
- dummy_heaps[ION_HEAP_TYPE_CHUNK].size);
- chunk_ptr = NULL;
- }
- return err;
-}
-device_initcall(ion_dummy_init);
-
-static void __exit ion_dummy_exit(void)
-{
- int i;
-
- ion_device_destroy(idev);
-
- for (i = 0; i < dummy_ion_pdata.nr; i++)
- ion_heap_destroy(heaps[i]);
- kfree(heaps);
-
- if (carveout_ptr) {
- free_pages_exact(carveout_ptr,
- dummy_heaps[ION_HEAP_TYPE_CARVEOUT].size);
- carveout_ptr = NULL;
- }
- if (chunk_ptr) {
- free_pages_exact(chunk_ptr,
- dummy_heaps[ION_HEAP_TYPE_CHUNK].size);
- chunk_ptr = NULL;
- }
-}
-__exitcall(ion_dummy_exit);
+++ /dev/null
-/*
- * Based on work from:
- * Andrew Andrianov <andrew@ncrmnt.org>
- * Google
- * The Linux Foundation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/of_address.h>
-#include <linux/clk.h>
-#include <linux/dma-mapping.h>
-#include <linux/cma.h>
-#include <linux/dma-contiguous.h>
-#include <linux/io.h>
-#include <linux/of_reserved_mem.h>
-#include "ion.h"
-#include "ion_priv.h"
-#include "ion_of.h"
-
-static int ion_parse_dt_heap_common(struct device_node *heap_node,
- struct ion_platform_heap *heap,
- struct ion_of_heap *compatible)
-{
- int i;
-
- for (i = 0; compatible[i].name; i++) {
- if (of_device_is_compatible(heap_node, compatible[i].compat))
- break;
- }
-
- if (!compatible[i].name)
- return -ENODEV;
-
- heap->id = compatible[i].heap_id;
- heap->type = compatible[i].type;
- heap->name = compatible[i].name;
- heap->align = compatible[i].align;
-
- /* Some kind of callback function pointer? */
-
- pr_info("%s: id %d type %d name %s align %lx\n", __func__,
- heap->id, heap->type, heap->name, heap->align);
- return 0;
-}
-
-static int ion_setup_heap_common(struct platform_device *parent,
- struct device_node *heap_node,
- struct ion_platform_heap *heap)
-{
- int ret = 0;
-
- switch (heap->type) {
- case ION_HEAP_TYPE_CARVEOUT:
- case ION_HEAP_TYPE_CHUNK:
- if (heap->base && heap->size)
- return 0;
-
- ret = of_reserved_mem_device_init(heap->priv);
- break;
- default:
- break;
- }
-
- return ret;
-}
-
-struct ion_platform_data *ion_parse_dt(struct platform_device *pdev,
- struct ion_of_heap *compatible)
-{
- int num_heaps, ret;
- const struct device_node *dt_node = pdev->dev.of_node;
- struct device_node *node;
- struct ion_platform_heap *heaps;
- struct ion_platform_data *data;
- int i = 0;
-
- num_heaps = of_get_available_child_count(dt_node);
-
- if (!num_heaps)
- return ERR_PTR(-EINVAL);
-
- heaps = devm_kzalloc(&pdev->dev,
- sizeof(struct ion_platform_heap) * num_heaps,
- GFP_KERNEL);
- if (!heaps)
- return ERR_PTR(-ENOMEM);
-
- data = devm_kzalloc(&pdev->dev, sizeof(struct ion_platform_data),
- GFP_KERNEL);
- if (!data)
- return ERR_PTR(-ENOMEM);
-
- for_each_available_child_of_node(dt_node, node) {
- struct platform_device *heap_pdev;
-
- ret = ion_parse_dt_heap_common(node, &heaps[i], compatible);
- if (ret)
- return ERR_PTR(ret);
-
- heap_pdev = of_platform_device_create(node, heaps[i].name,
- &pdev->dev);
- if (!heap_pdev)
- return ERR_PTR(-ENOMEM);
- heap_pdev->dev.platform_data = &heaps[i];
-
- heaps[i].priv = &heap_pdev->dev;
-
- ret = ion_setup_heap_common(pdev, node, &heaps[i]);
- if (ret)
- goto out_err;
- i++;
- }
-
- data->heaps = heaps;
- data->nr = num_heaps;
- return data;
-
-out_err:
- for ( ; i >= 0; i--)
- if (heaps[i].priv)
- of_device_unregister(to_platform_device(heaps[i].priv));
-
- return ERR_PTR(ret);
-}
-
-void ion_destroy_platform_data(struct ion_platform_data *data)
-{
- int i;
-
- for (i = 0; i < data->nr; i++)
- if (data->heaps[i].priv)
- of_device_unregister(to_platform_device(
- data->heaps[i].priv));
-}
-
-#ifdef CONFIG_OF_RESERVED_MEM
-#include <linux/of.h>
-#include <linux/of_fdt.h>
-#include <linux/of_reserved_mem.h>
-
-static int rmem_ion_device_init(struct reserved_mem *rmem, struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct ion_platform_heap *heap = pdev->dev.platform_data;
-
- heap->base = rmem->base;
- heap->base = rmem->size;
- pr_debug("%s: heap %s base %pa size %pa dev %p\n", __func__,
- heap->name, &rmem->base, &rmem->size, dev);
- return 0;
-}
-
-static void rmem_ion_device_release(struct reserved_mem *rmem,
- struct device *dev)
-{
-}
-
-static const struct reserved_mem_ops rmem_dma_ops = {
- .device_init = rmem_ion_device_init,
- .device_release = rmem_ion_device_release,
-};
-
-static int __init rmem_ion_setup(struct reserved_mem *rmem)
-{
- phys_addr_t size = rmem->size;
-
- size = size / 1024;
-
- pr_info("Ion memory setup at %pa size %pa MiB\n",
- &rmem->base, &size);
- rmem->ops = &rmem_dma_ops;
- return 0;
-}
-
-RESERVEDMEM_OF_DECLARE(ion, "ion-region", rmem_ion_setup);
-#endif
+++ /dev/null
-/*
- * Based on work from:
- * Andrew Andrianov <andrew@ncrmnt.org>
- * Google
- * The Linux Foundation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef _ION_OF_H
-#define _ION_OF_H
-
-struct ion_of_heap {
- const char *compat;
- int heap_id;
- int type;
- const char *name;
- int align;
-};
-
-#define PLATFORM_HEAP(_compat, _id, _type, _name) \
-{ \
- .compat = _compat, \
- .heap_id = _id, \
- .type = _type, \
- .name = _name, \
- .align = PAGE_SIZE, \
-}
-
-struct ion_platform_data *ion_parse_dt(struct platform_device *pdev,
- struct ion_of_heap *compatible);
-
-void ion_destroy_platform_data(struct ion_platform_data *data);
-
-#endif
+++ /dev/null
-/*
- *
- * Copyright (C) 2013 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.
- *
- */
-
-#define pr_fmt(fmt) "ion-test: " fmt
-
-#include <linux/dma-buf.h>
-#include <linux/dma-direction.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/vmalloc.h>
-
-#include "ion.h"
-#include "../uapi/ion_test.h"
-
-#define u64_to_uptr(x) ((void __user *)(unsigned long)(x))
-
-struct ion_test_device {
- struct miscdevice misc;
-};
-
-struct ion_test_data {
- struct dma_buf *dma_buf;
- struct device *dev;
-};
-
-static int ion_handle_test_dma(struct device *dev, struct dma_buf *dma_buf,
- void __user *ptr, size_t offset, size_t size,
- bool write)
-{
- int ret = 0;
- struct dma_buf_attachment *attach;
- struct sg_table *table;
- pgprot_t pgprot = pgprot_writecombine(PAGE_KERNEL);
- enum dma_data_direction dir = write ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
- struct sg_page_iter sg_iter;
- unsigned long offset_page;
-
- attach = dma_buf_attach(dma_buf, dev);
- if (IS_ERR(attach))
- return PTR_ERR(attach);
-
- table = dma_buf_map_attachment(attach, dir);
- if (IS_ERR(table))
- return PTR_ERR(table);
-
- offset_page = offset >> PAGE_SHIFT;
- offset %= PAGE_SIZE;
-
- for_each_sg_page(table->sgl, &sg_iter, table->nents, offset_page) {
- struct page *page = sg_page_iter_page(&sg_iter);
- void *vaddr = vmap(&page, 1, VM_MAP, pgprot);
- size_t to_copy = PAGE_SIZE - offset;
-
- to_copy = min(to_copy, size);
- if (!vaddr) {
- ret = -ENOMEM;
- goto err;
- }
-
- if (write)
- ret = copy_from_user(vaddr + offset, ptr, to_copy);
- else
- ret = copy_to_user(ptr, vaddr + offset, to_copy);
-
- vunmap(vaddr);
- if (ret) {
- ret = -EFAULT;
- goto err;
- }
- size -= to_copy;
- if (!size)
- break;
- ptr += to_copy;
- offset = 0;
- }
-
-err:
- dma_buf_unmap_attachment(attach, table, dir);
- dma_buf_detach(dma_buf, attach);
- return ret;
-}
-
-static int ion_handle_test_kernel(struct dma_buf *dma_buf, void __user *ptr,
- size_t offset, size_t size, bool write)
-{
- int ret;
- unsigned long page_offset = offset >> PAGE_SHIFT;
- size_t copy_offset = offset % PAGE_SIZE;
- size_t copy_size = size;
- enum dma_data_direction dir = write ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
-
- if (offset > dma_buf->size || size > dma_buf->size - offset)
- return -EINVAL;
-
- ret = dma_buf_begin_cpu_access(dma_buf, dir);
- if (ret)
- return ret;
-
- while (copy_size > 0) {
- size_t to_copy;
- void *vaddr = dma_buf_kmap(dma_buf, page_offset);
-
- if (!vaddr)
- goto err;
-
- to_copy = min_t(size_t, PAGE_SIZE - copy_offset, copy_size);
-
- if (write)
- ret = copy_from_user(vaddr + copy_offset, ptr, to_copy);
- else
- ret = copy_to_user(ptr, vaddr + copy_offset, to_copy);
-
- dma_buf_kunmap(dma_buf, page_offset, vaddr);
- if (ret) {
- ret = -EFAULT;
- goto err;
- }
-
- copy_size -= to_copy;
- ptr += to_copy;
- page_offset++;
- copy_offset = 0;
- }
-err:
- dma_buf_end_cpu_access(dma_buf, dir);
- return ret;
-}
-
-static long ion_test_ioctl(struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- struct ion_test_data *test_data = filp->private_data;
- int ret = 0;
-
- union {
- struct ion_test_rw_data test_rw;
- } data;
-
- if (_IOC_SIZE(cmd) > sizeof(data))
- return -EINVAL;
-
- if (_IOC_DIR(cmd) & _IOC_WRITE)
- if (copy_from_user(&data, (void __user *)arg, _IOC_SIZE(cmd)))
- return -EFAULT;
-
- switch (cmd) {
- case ION_IOC_TEST_SET_FD:
- {
- struct dma_buf *dma_buf = NULL;
- int fd = arg;
-
- if (fd >= 0) {
- dma_buf = dma_buf_get((int)arg);
- if (IS_ERR(dma_buf))
- return PTR_ERR(dma_buf);
- }
- if (test_data->dma_buf)
- dma_buf_put(test_data->dma_buf);
- test_data->dma_buf = dma_buf;
- break;
- }
- case ION_IOC_TEST_DMA_MAPPING:
- {
- ret = ion_handle_test_dma(test_data->dev, test_data->dma_buf,
- u64_to_uptr(data.test_rw.ptr),
- data.test_rw.offset,
- data.test_rw.size,
- data.test_rw.write);
- break;
- }
- case ION_IOC_TEST_KERNEL_MAPPING:
- {
- ret = ion_handle_test_kernel(test_data->dma_buf,
- u64_to_uptr(data.test_rw.ptr),
- data.test_rw.offset,
- data.test_rw.size,
- data.test_rw.write);
- break;
- }
- default:
- return -ENOTTY;
- }
-
- if (_IOC_DIR(cmd) & _IOC_READ) {
- if (copy_to_user((void __user *)arg, &data, sizeof(data)))
- return -EFAULT;
- }
- return ret;
-}
-
-static int ion_test_open(struct inode *inode, struct file *file)
-{
- struct ion_test_data *data;
- struct miscdevice *miscdev = file->private_data;
-
- data = kzalloc(sizeof(*data), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- data->dev = miscdev->parent;
-
- file->private_data = data;
-
- return 0;
-}
-
-static int ion_test_release(struct inode *inode, struct file *file)
-{
- struct ion_test_data *data = file->private_data;
-
- kfree(data);
-
- return 0;
-}
-
-static const struct file_operations ion_test_fops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = ion_test_ioctl,
- .compat_ioctl = ion_test_ioctl,
- .open = ion_test_open,
- .release = ion_test_release,
-};
-
-static int __init ion_test_probe(struct platform_device *pdev)
-{
- int ret;
- struct ion_test_device *testdev;
-
- testdev = devm_kzalloc(&pdev->dev, sizeof(struct ion_test_device),
- GFP_KERNEL);
- if (!testdev)
- return -ENOMEM;
-
- testdev->misc.minor = MISC_DYNAMIC_MINOR;
- testdev->misc.name = "ion-test";
- testdev->misc.fops = &ion_test_fops;
- testdev->misc.parent = &pdev->dev;
- ret = misc_register(&testdev->misc);
- if (ret) {
- dev_err(&pdev->dev, "failed to register misc device.\n");
- return ret;
- }
-
- platform_set_drvdata(pdev, testdev);
-
- return 0;
-}
-
-static int ion_test_remove(struct platform_device *pdev)
-{
- struct ion_test_device *testdev;
-
- testdev = platform_get_drvdata(pdev);
- if (!testdev)
- return -ENODATA;
-
- misc_deregister(&testdev->misc);
- return 0;
-}
-
-static struct platform_device *ion_test_pdev;
-static struct platform_driver ion_test_platform_driver = {
- .remove = ion_test_remove,
- .driver = {
- .name = "ion-test",
- },
-};
-
-static int __init ion_test_init(void)
-{
- ion_test_pdev = platform_device_register_simple("ion-test",
- -1, NULL, 0);
- if (IS_ERR(ion_test_pdev))
- return PTR_ERR(ion_test_pdev);
-
- return platform_driver_probe(&ion_test_platform_driver, ion_test_probe);
-}
-
-static void __exit ion_test_exit(void)
-{
- platform_driver_unregister(&ion_test_platform_driver);
- platform_device_unregister(ion_test_pdev);
-}
-
-module_init(ion_test_init);
-module_exit(ion_test_exit);
-MODULE_LICENSE("GPL v2");
+++ /dev/null
-obj-$(CONFIG_ION_TEGRA) += tegra_ion.o
+++ /dev/null
-/*
- * 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/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include "../ion.h"
-#include "../ion_priv.h"
-
-static struct ion_device *idev;
-static int num_heaps;
-static struct ion_heap **heaps;
-
-static 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 = devm_kcalloc(&pdev->dev, pdata->nr,
- sizeof(struct ion_heap *), GFP_KERNEL);
-
- idev = ion_device_create(NULL);
- if (IS_ERR(idev))
- 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)
- ion_heap_destroy(heaps[i]);
- return err;
-}
-
-static 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]);
- return 0;
-}
-
-static struct platform_driver ion_driver = {
- .probe = tegra_ion_probe,
- .remove = tegra_ion_remove,
- .driver = { .name = "ion-tegra" }
-};
-
-module_platform_driver(ion_driver);
-
+++ /dev/null
-/*
- * drivers/staging/android/uapi/ion.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 _UAPI_LINUX_ION_TEST_H
-#define _UAPI_LINUX_ION_TEST_H
-
-#include <linux/ioctl.h>
-#include <linux/types.h>
-
-/**
- * struct ion_test_rw_data - metadata passed to the kernel to read handle
- * @ptr: a pointer to an area at least as large as size
- * @offset: offset into the ion buffer to start reading
- * @size: size to read or write
- * @write: 1 to write, 0 to read
- */
-struct ion_test_rw_data {
- __u64 ptr;
- __u64 offset;
- __u64 size;
- int write;
- int __padding;
-};
-
-#define ION_IOC_MAGIC 'I'
-
-/**
- * DOC: ION_IOC_TEST_SET_DMA_BUF - attach a dma buf to the test driver
- *
- * Attaches a dma buf fd to the test driver. Passing a second fd or -1 will
- * release the first fd.
- */
-#define ION_IOC_TEST_SET_FD \
- _IO(ION_IOC_MAGIC, 0xf0)
-
-/**
- * DOC: ION_IOC_TEST_DMA_MAPPING - read or write memory from a handle as DMA
- *
- * Reads or writes the memory from a handle using an uncached mapping. Can be
- * used by unit tests to emulate a DMA engine as close as possible. Only
- * expected to be used for debugging and testing, may not always be available.
- */
-#define ION_IOC_TEST_DMA_MAPPING \
- _IOW(ION_IOC_MAGIC, 0xf1, struct ion_test_rw_data)
-
-/**
- * DOC: ION_IOC_TEST_KERNEL_MAPPING - read or write memory from a handle
- *
- * Reads or writes the memory from a handle using a kernel mapping. Can be
- * used by unit tests to test heap map_kernel functions. Only expected to be
- * used for debugging and testing, may not always be available.
- */
-#define ION_IOC_TEST_KERNEL_MAPPING \
- _IOW(ION_IOC_MAGIC, 0xf2, struct ion_test_rw_data)
-
-#endif /* _UAPI_LINUX_ION_H */
projects / karo-tx-linux.git / commitdiff