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/*
* drivers/gpu/ion/compat_ion.c
*
* 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.
*
*/
#include <linux/compat.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/ion.h>
#include <video/ion_sprd.h>
#include "sprd_fence.h"
#include "compat_sprd_ion.h"
/* See kernel/include/video/ion_sprd.h for the definition of these structs */
struct compat_ion_phys_data {
compat_int_t fd_buffer;
compat_ulong_t phys;
compat_size_t size;
};
struct compat_ion_msync_data {
compat_int_t fd_buffer;
compat_uptr_t vaddr;
compat_uptr_t paddr;
compat_size_t size;
};
struct compat_ion_mmu_data {
compat_int_t master_id;
compat_int_t fd_buffer;
compat_ulong_t iova_addr;
compat_size_t iova_size;
};
static int compat_get_ion_phys_data(
struct compat_ion_phys_data __user *data32,
struct ion_phys_data __user *data)
{
compat_int_t i;
int err;
err = get_user(i, &data32->fd_buffer);
err |= put_user(i, &data->fd_buffer);
return err;
};
static int compat_put_ion_phys_data(
struct compat_ion_phys_data __user *data32,
struct ion_phys_data __user *data)
{
compat_ulong_t ul;
compat_size_t s;
int err;
err = get_user(ul, &data->phys);
err |= put_user(ul, &data32->phys);
err |= get_user(s, &data->size);
err |= put_user(s, &data32->size);
return err;
};
static int compat_get_ion_msync_data(
struct compat_ion_msync_data __user *data32,
struct ion_msync_data __user *data)
{
compat_int_t i;
compat_uptr_t up;
compat_size_t s;
int err;
err = get_user(i, &data32->fd_buffer);
err |= put_user(i, &data->fd_buffer);
err |= get_user(up, &data32->vaddr);
err |= put_user(up, &data->vaddr);
err |= get_user(up, &data32->paddr);
err |= put_user(up, &data->paddr);
err |= get_user(s, &data32->size);
err |= put_user(s, &data->size);
return err;
};
static int compat_get_ion_mmu_data(
struct compat_ion_mmu_data __user *data32,
struct ion_mmu_data __user *data)
{
compat_int_t i;
compat_ulong_t ul;
compat_size_t s;
int err;
err = get_user(i, &data32->master_id);
err |= put_user(i, &data->master_id);
err |= get_user(i, &data32->fd_buffer);
err |= put_user(i, &data->fd_buffer);
err |= get_user(ul, &data32->iova_addr);
err |= put_user(ul, &data->iova_addr);
err |= get_user(s, &data32->iova_size);
err |= put_user(s, &data->iova_size);
return err;
};
static int compat_put_ion_mmu_data(
struct compat_ion_mmu_data __user *data32,
struct ion_mmu_data __user *data)
{
compat_int_t i;
compat_ulong_t ul;
compat_size_t s;
int err;
err = get_user(i, &data->master_id);
err |= put_user(i, &data32->master_id);
err |= get_user(i, &data->fd_buffer);
err |= put_user(i, &data32->fd_buffer);
err |= get_user(ul, &data->iova_addr);
err |= put_user(ul, &data32->iova_addr);
err |= get_user(s, &data->iova_size);
err |= put_user(s, &data32->iova_size);
return err;
};
long compat_sprd_ion_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
#if 0
struct ion_client *client = filp->private_data;
struct ion_device *dev = client->dev;
if (!filp->f_op || !dev->custom_ioctl)
return -ENOTTY;
#endif
long ret;
pr_debug("%s, cmd: %u", __FUNCTION__, cmd);
switch (cmd) {
case ION_SPRD_CUSTOM_PHYS:
{
struct compat_ion_phys_data __user *data32;
struct ion_phys_data __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(*data));
if (data == NULL)
return -EFAULT;
err = compat_get_ion_phys_data(data32, data);
if (err)
return err;
#if 0
ret = dev->custom_ioctl(client, ION_SPRD_CUSTOM_PHYS,
(unsigned long)data);
#else
ret = sprd_ion_ioctl(filp, ION_SPRD_CUSTOM_PHYS, (unsigned long)data);
#endif
err = compat_put_ion_phys_data(data32, data);
return ret ? ret : err;
}
case ION_SPRD_CUSTOM_MSYNC:
{
struct compat_ion_msync_data __user *data32;
struct ion_msync_data __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(*data));
if (data == NULL)
return -EFAULT;
err = compat_get_ion_msync_data(data32, data);
if (err)
return err;
#if 0
ret = dev->custom_ioctl(client, ION_SPRD_CUSTOM_MSYNC,
(unsigned long)data);
#else
ret = sprd_ion_ioctl(filp, ION_SPRD_CUSTOM_MSYNC, (unsigned long)data);
#endif
return ret;
}
#if defined(CONFIG_SPRD_IOMMU)
case ION_SPRD_CUSTOM_GSP_MAP:
{
struct compat_ion_mmu_data __user *data32;
struct ion_mmu_data __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(*data));
if (data == NULL)
return -EFAULT;
err = compat_get_ion_mmu_data(data32, data);
if (err)
return err;
#if 0
ret = dev->custom_ioctl(client, ION_SPRD_CUSTOM_GSP_MAP,
(unsigned long)data);
#else
ret = sprd_ion_ioctl(filp, ION_SPRD_CUSTOM_GSP_MAP, (unsigned long)data);
#endif
err = compat_put_ion_mmu_data(data32, data);
return ret ? ret : err;
}
case ION_SPRD_CUSTOM_GSP_UNMAP:
{
struct compat_ion_mmu_data __user *data32;
struct ion_mmu_data __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(*data));
if (data == NULL)
return -EFAULT;
err = compat_get_ion_mmu_data(data32, data);
if (err)
return err;
#if 0
ret = dev->custom_ioctl(client, ION_SPRD_CUSTOM_GSP_UNMAP,
(unsigned long)data);
#else
ret = sprd_ion_ioctl(filp, ION_SPRD_CUSTOM_GSP_UNMAP, (unsigned long)data);
#endif
err = compat_put_ion_mmu_data(data32, data);
return ret ? ret : err;
}
case ION_SPRD_CUSTOM_MM_MAP:
{
struct compat_ion_mmu_data __user *data32;
struct ion_mmu_data __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(*data));
if (data == NULL)
return -EFAULT;
err = compat_get_ion_mmu_data(data32, data);
if (err)
return err;
#if 0
ret = dev->custom_ioctl(client, ION_SPRD_CUSTOM_MM_MAP,
(unsigned long)data);
#else
ret = sprd_ion_ioctl(filp, ION_SPRD_CUSTOM_MM_MAP, (unsigned long)data);
#endif
err = compat_put_ion_mmu_data(data32, data);
return ret ? ret : err;
}
case ION_SPRD_CUSTOM_MM_UNMAP:
{
struct compat_ion_mmu_data __user *data32;
struct ion_mmu_data __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(*data));
if (data == NULL)
return -EFAULT;
err = compat_get_ion_mmu_data(data32, data);
if (err)
return err;
#if 0
ret = dev->custom_ioctl(client, ION_SPRD_CUSTOM_MM_UNMAP,
(unsigned long)data);
#else
ret = sprd_ion_ioctl(filp, ION_SPRD_CUSTOM_MM_UNMAP, (unsigned long)data);
#endif
err = compat_put_ion_mmu_data(data32, data);
return ret ? ret : err;
}
#endif
case ION_SPRD_CUSTOM_FENCE_CREATE:
{
int ret = -1;
struct ion_fence_data data;
if (copy_from_user(&data, (void __user *)arg, sizeof(data))) {
pr_err("FENCE_CREATE user data is err\n");
return -EFAULT;
}
ret = sprd_fence_build(&data);
if (ret != 0) {
pr_err("sprd_fence_build failed\n");
return -EFAULT;
}
if (copy_to_user((void __user *)arg, &data, sizeof(data))) {
sprd_fence_destroy(&data);
pr_err("copy_to_user fence failed\n");
return -EFAULT;
}
break;
}
case ION_SPRD_CUSTOM_FENCE_SIGNAL:
{
struct ion_fence_data data;
if (copy_from_user(&data, (void __user *)arg, sizeof(data))) {
pr_err("FENCE_CREATE user data is err\n");
return -EFAULT;
}
sprd_fence_signal(&data);
break;
}
case ION_SPRD_CUSTOM_FENCE_DUP:
{
break;
}
default:
return -ENOIOCTLCMD;
}
}
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