diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-05 18:16:23 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-05 18:16:23 -0700 |
commit | c6a677c6f37bb7abc85ba7e3465e82b9f7eb1d91 (patch) | |
tree | 9d0d4bb2e150837297cddc5be7f1b4950e9ab228 /drivers/staging/android/ion/ion_test.c | |
parent | e87d51ac61f88ae44fe14b34abe08566032d726b (diff) | |
parent | 11270059e8d0b6f80801fac910c4ef751ca05c4c (diff) |
Merge tag 'staging-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO updates from Greg KH:
"Here is the big staging tree update for 4.12-rc1.
It's a big one, adding about 350k new lines of crap^Wcode, mostly all
in a big dump of media drivers from Intel. But there's other new
drivers in here as well, yet-another-wifi driver, new IIO drivers, and
a new crypto accelerator.
We also deleted a bunch of stuff, mostly in patch cleanups, but also
the Android ION code has shrunk a lot, and the Android low memory
killer driver was finally deleted, much to the celebration of the -mm
developers.
All of these have been in linux-next with a few build issues that will
show up when you merge to your tree"
Merge conflicts in the new rtl8723bs driver (due to the wifi changes
this merge window) handled as per linux-next, courtesy of Stephen
Rothwell.
* tag 'staging-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1182 commits)
staging: fsl-mc/dpio: add cpu <--> LE conversion for dpaa2_fd
staging: ks7010: remove line continuations in quoted strings
staging: vt6656: use tabs instead of spaces
staging: android: ion: Fix unnecessary initialization of static variable
staging: media: atomisp: fix range checking on clk_num
staging: media: atomisp: fix misspelled word in comment
staging: media: atomisp: kmap() can't fail
staging: atomisp: remove #ifdef for runtime PM functions
staging: atomisp: satm include directory is gone
atomisp: remove some more unused files
atomisp: remove hmm_load/store/clear indirections
atomisp: kill off mmgr_free
atomisp: clean up the hmm init/cleanup indirections
atomisp: handle allocation calls before init in the hmm layer
staging: fsl-dpaa2/eth: Add maintainer for Ethernet driver
staging: fsl-dpaa2/eth: Add TODO file
staging: fsl-dpaa2/eth: Add trace points
staging: fsl-dpaa2/eth: Add driver specific stats
staging: fsl-dpaa2/eth: Add ethtool support
staging: fsl-dpaa2/eth: Add Freescale DPAA2 Ethernet driver
...
Diffstat (limited to 'drivers/staging/android/ion/ion_test.c')
-rw-r--r-- | drivers/staging/android/ion/ion_test.c | 305 |
1 files changed, 0 insertions, 305 deletions
diff --git a/drivers/staging/android/ion/ion_test.c b/drivers/staging/android/ion/ion_test.c deleted file mode 100644 index 5abf8320a96a..000000000000 --- a/drivers/staging/android/ion/ion_test.c +++ /dev/null @@ -1,305 +0,0 @@ -/* - * - * 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) { - pr_err("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"); |