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/*
* QTI CE 32-bit compatibility syscall for 64-bit systems
*
* Copyright (c) 2014-2015, 2017, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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) "COMPAT-QCEDEV: %s: " fmt, __func__
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/uaccess.h>
#include <linux/qcedev.h>
#include <linux/compat.h>
#include "compat_qcedev.h"
static int compat_get_qcedev_pmem_info(
struct compat_qcedev_pmem_info __user *pmem32,
struct qcedev_pmem_info __user *pmem)
{
compat_ulong_t offset;
compat_int_t fd_src;
compat_int_t fd_dst;
int err = 0, i = 0;
uint32_t len;
err |= get_user(fd_src, &pmem32->fd_src);
err |= put_user(fd_src, &pmem->fd_src);
for (i = 0; i < QCEDEV_MAX_BUFFERS; i++) {
err |= get_user(offset, &pmem32->src[i].offset);
err |= put_user(offset, &pmem->src[i].offset);
err |= get_user(len, &pmem32->src[i].len);
err |= put_user(len, &pmem->src[i].len);
}
err |= get_user(fd_dst, &pmem32->fd_dst);
err |= put_user(fd_dst, &pmem->fd_dst);
for (i = 0; i < QCEDEV_MAX_BUFFERS; i++) {
err |= get_user(offset, &pmem32->dst[i].offset);
err |= put_user(offset, &pmem->dst[i].offset);
err |= get_user(len, &pmem32->dst[i].len);
err |= put_user(len, &pmem->dst[i].len);
}
return err;
}
static int compat_put_qcedev_pmem_info(
struct compat_qcedev_pmem_info __user *pmem32,
struct qcedev_pmem_info __user *pmem)
{
compat_ulong_t offset;
compat_int_t fd_src;
compat_int_t fd_dst;
int err = 0, i = 0;
uint32_t len;
err |= get_user(fd_src, &pmem->fd_src);
err |= put_user(fd_src, &pmem32->fd_src);
for (i = 0; i < QCEDEV_MAX_BUFFERS; i++) {
err |= get_user(offset, &pmem->src[i].offset);
err |= put_user(offset, &pmem32->src[i].offset);
err |= get_user(len, &pmem->src[i].len);
err |= put_user(len, &pmem32->src[i].len);
}
err |= get_user(fd_dst, &pmem->fd_dst);
err |= put_user(fd_dst, &pmem32->fd_dst);
for (i = 0; i < QCEDEV_MAX_BUFFERS; i++) {
err |= get_user(offset, &pmem->dst[i].offset);
err |= put_user(offset, &pmem32->dst[i].offset);
err |= get_user(len, &pmem->dst[i].len);
err |= put_user(len, &pmem32->dst[i].len);
}
return err;
}
static int compat_get_qcedev_vbuf_info(
struct compat_qcedev_vbuf_info __user *vbuf32,
struct qcedev_vbuf_info __user *vbuf)
{
compat_uptr_t vaddr;
int err = 0, i = 0;
uint32_t len;
for (i = 0; i < QCEDEV_MAX_BUFFERS; i++) {
err |= get_user(vaddr, &vbuf32->src[i].vaddr);
err |= put_user(vaddr, (compat_uptr_t *)&vbuf->src[i].vaddr);
err |= get_user(len, &vbuf32->src[i].len);
err |= put_user(len, &vbuf->src[i].len);
}
for (i = 0; i < QCEDEV_MAX_BUFFERS; i++) {
err |= get_user(vaddr, &vbuf32->dst[i].vaddr);
err |= put_user(vaddr, (compat_uptr_t *)&vbuf->dst[i].vaddr);
err |= get_user(len, &vbuf32->dst[i].len);
err |= put_user(len, &vbuf->dst[i].len);
}
return err;
}
static int compat_put_qcedev_vbuf_info(
struct compat_qcedev_vbuf_info __user *vbuf32,
struct qcedev_vbuf_info __user *vbuf)
{
compat_uptr_t vaddr;
int err = 0, i = 0;
uint32_t len;
for (i = 0; i < QCEDEV_MAX_BUFFERS; i++) {
err |= get_user(vaddr, (compat_uptr_t *)&vbuf->src[i].vaddr);
err |= put_user(vaddr, &vbuf32->src[i].vaddr);
err |= get_user(len, &vbuf->src[i].len);
err |= put_user(len, &vbuf32->src[i].len);
}
for (i = 0; i < QCEDEV_MAX_BUFFERS; i++) {
err |= get_user(vaddr, (compat_uptr_t *)&vbuf->dst[i].vaddr);
err |= put_user(vaddr, &vbuf32->dst[i].vaddr);
err |= get_user(len, &vbuf->dst[i].len);
err |= put_user(len, &vbuf32->dst[i].len);
}
return err;
}
static int compat_get_qcedev_cipher_op_req(
struct compat_qcedev_cipher_op_req __user *data32,
struct qcedev_cipher_op_req __user *data)
{
enum qcedev_cipher_mode_enum mode;
enum qcedev_cipher_alg_enum alg;
compat_ulong_t byteoffset;
enum qcedev_oper_enum op;
compat_ulong_t data_len;
compat_ulong_t encklen;
compat_ulong_t entries;
compat_ulong_t ivlen;
uint8_t in_place_op;
int err = 0, i = 0;
uint8_t use_pmem;
uint8_t enckey;
uint8_t iv;
err |= get_user(use_pmem, &data32->use_pmem);
err |= put_user(use_pmem, &data->use_pmem);
if (use_pmem)
err |= compat_get_qcedev_pmem_info(&data32->pmem, &data->pmem);
else
err |= compat_get_qcedev_vbuf_info(&data32->vbuf, &data->vbuf);
err |= get_user(entries, &data32->entries);
err |= put_user(entries, &data->entries);
err |= get_user(data_len, &data32->data_len);
err |= put_user(data_len, &data->data_len);
err |= get_user(in_place_op, &data32->in_place_op);
err |= put_user(in_place_op, &data->in_place_op);
for (i = 0; i < QCEDEV_MAX_KEY_SIZE; i++) {
err |= get_user(enckey, &(data32->enckey[i]));
err |= put_user(enckey, &(data->enckey[i]));
}
err |= get_user(encklen, &data32->encklen);
err |= put_user(encklen, &data->encklen);
for (i = 0; i < QCEDEV_MAX_IV_SIZE; i++) {
err |= get_user(iv, &(data32->iv[i]));
err |= put_user(iv, &(data->iv[i]));
}
err |= get_user(ivlen, &data32->ivlen);
err |= put_user(ivlen, &data->ivlen);
err |= get_user(byteoffset, &data32->byteoffset);
err |= put_user(byteoffset, &data->byteoffset);
err |= get_user(alg, &data32->alg);
err |= put_user(alg, &data->alg);
err |= get_user(mode, &data32->mode);
err |= put_user(mode, &data->mode);
err |= get_user(op, &data32->op);
err |= put_user(op, &data->op);
return err;
}
static int compat_put_qcedev_cipher_op_req(
struct compat_qcedev_cipher_op_req __user *data32,
struct qcedev_cipher_op_req __user *data)
{
enum qcedev_cipher_mode_enum mode;
enum qcedev_cipher_alg_enum alg;
compat_ulong_t byteoffset;
enum qcedev_oper_enum op;
compat_ulong_t data_len;
compat_ulong_t encklen;
compat_ulong_t entries;
compat_ulong_t ivlen;
uint8_t in_place_op;
int err = 0, i = 0;
uint8_t use_pmem;
uint8_t enckey;
uint8_t iv;
err |= get_user(use_pmem, &data->use_pmem);
err |= put_user(use_pmem, &data32->use_pmem);
if (use_pmem)
err |= compat_put_qcedev_pmem_info(&data32->pmem, &data->pmem);
else
err |= compat_put_qcedev_vbuf_info(&data32->vbuf, &data->vbuf);
err |= get_user(entries, &data->entries);
err |= put_user(entries, &data32->entries);
err |= get_user(data_len, &data->data_len);
err |= put_user(data_len, &data32->data_len);
err |= get_user(in_place_op, &data->in_place_op);
err |= put_user(in_place_op, &data32->in_place_op);
for (i = 0; i < QCEDEV_MAX_KEY_SIZE; i++) {
err |= get_user(enckey, &(data->enckey[i]));
err |= put_user(enckey, &(data32->enckey[i]));
}
err |= get_user(encklen, &data->encklen);
err |= put_user(encklen, &data32->encklen);
for (i = 0; i < QCEDEV_MAX_IV_SIZE; i++) {
err |= get_user(iv, &(data->iv[i]));
err |= put_user(iv, &(data32->iv[i]));
}
err |= get_user(ivlen, &data->ivlen);
err |= put_user(ivlen, &data32->ivlen);
err |= get_user(byteoffset, &data->byteoffset);
err |= put_user(byteoffset, &data32->byteoffset);
err |= get_user(alg, &data->alg);
err |= put_user(alg, &data32->alg);
err |= get_user(mode, &data->mode);
err |= put_user(mode, &data32->mode);
err |= get_user(op, &data->op);
err |= put_user(op, &data32->op);
return err;
}
static int compat_get_qcedev_sha_op_req(
struct compat_qcedev_sha_op_req __user *data32,
struct qcedev_sha_op_req __user *data)
{
enum qcedev_sha_alg_enum alg;
compat_ulong_t authklen;
compat_ulong_t data_len;
compat_ulong_t entries;
compat_ulong_t diglen;
compat_uptr_t authkey;
compat_uptr_t vaddr;
int err = 0, i = 0;
uint8_t digest;
uint32_t len;
for (i = 0; i < QCEDEV_MAX_BUFFERS; i++) {
err |= get_user(vaddr, &data32->data[i].vaddr);
err |= put_user(vaddr, (compat_uptr_t *)&data->data[i].vaddr);
err |= get_user(len, &data32->data[i].len);
err |= put_user(len, &data->data[i].len);
}
err |= get_user(entries, &data32->entries);
err |= put_user(entries, &data->entries);
err |= get_user(data_len, &data32->data_len);
err |= put_user(data_len, &data->data_len);
for (i = 0; i < QCEDEV_MAX_SHA_DIGEST; i++) {
err |= get_user(digest, &(data32->digest[i]));
err |= put_user(digest, &(data->digest[i]));
}
err |= get_user(diglen, &data32->diglen);
err |= put_user(diglen, &data->diglen);
err |= get_user(authkey, &data32->authkey);
err |= put_user(authkey, (compat_uptr_t *)&data->authkey);
err |= get_user(authklen, &data32->authklen);
err |= put_user(authklen, &data->authklen);
err |= get_user(alg, &data32->alg);
err |= put_user(alg, &data->alg);
return err;
}
static int compat_put_qcedev_sha_op_req(
struct compat_qcedev_sha_op_req __user *data32,
struct qcedev_sha_op_req __user *data)
{
enum qcedev_sha_alg_enum alg;
compat_ulong_t authklen;
compat_ulong_t data_len;
compat_ulong_t entries;
compat_ulong_t diglen;
compat_uptr_t authkey;
compat_uptr_t vaddr;
int err = 0, i = 0;
uint8_t digest;
uint32_t len;
for (i = 0; i < QCEDEV_MAX_BUFFERS; i++) {
err |= get_user(vaddr, (compat_uptr_t *)&data->data[i].vaddr);
err |= put_user(vaddr, &data32->data[i].vaddr);
err |= get_user(len, &data->data[i].len);
err |= put_user(len, &data32->data[i].len);
}
err |= get_user(entries, &data->entries);
err |= put_user(entries, &data32->entries);
err |= get_user(data_len, &data->data_len);
err |= put_user(data_len, &data32->data_len);
for (i = 0; i < QCEDEV_MAX_SHA_DIGEST; i++) {
err |= get_user(digest, &(data->digest[i]));
err |= put_user(digest, &(data32->digest[i]));
}
err |= get_user(diglen, &data->diglen);
err |= put_user(diglen, &data32->diglen);
err |= get_user(authkey, (compat_uptr_t *)&data->authkey);
err |= put_user(authkey, &data32->authkey);
err |= get_user(authklen, &data->authklen);
err |= put_user(authklen, &data32->authklen);
err |= get_user(alg, &data->alg);
err |= put_user(alg, &data32->alg);
return err;
}
static unsigned int convert_cmd(unsigned int cmd)
{
switch (cmd) {
case COMPAT_QCEDEV_IOCTL_ENC_REQ:
return QCEDEV_IOCTL_ENC_REQ;
case COMPAT_QCEDEV_IOCTL_DEC_REQ:
return QCEDEV_IOCTL_DEC_REQ;
case COMPAT_QCEDEV_IOCTL_SHA_INIT_REQ:
return QCEDEV_IOCTL_SHA_INIT_REQ;
case COMPAT_QCEDEV_IOCTL_SHA_UPDATE_REQ:
return QCEDEV_IOCTL_SHA_UPDATE_REQ;
case COMPAT_QCEDEV_IOCTL_SHA_FINAL_REQ:
return QCEDEV_IOCTL_SHA_FINAL_REQ;
case COMPAT_QCEDEV_IOCTL_GET_SHA_REQ:
return QCEDEV_IOCTL_GET_SHA_REQ;
case COMPAT_QCEDEV_IOCTL_GET_CMAC_REQ:
return QCEDEV_IOCTL_GET_CMAC_REQ;
default:
return cmd;
}
}
long compat_qcedev_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
long ret;
switch (cmd) {
case COMPAT_QCEDEV_IOCTL_ENC_REQ:
case COMPAT_QCEDEV_IOCTL_DEC_REQ: {
struct compat_qcedev_cipher_op_req __user *data32;
struct qcedev_cipher_op_req __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(*data));
if (!data)
return -EFAULT;
err = compat_get_qcedev_cipher_op_req(data32, data);
if (err)
return err;
ret = qcedev_ioctl(file, convert_cmd(cmd), (unsigned long)data);
err = compat_put_qcedev_cipher_op_req(data32, data);
return ret ? ret : err;
}
case COMPAT_QCEDEV_IOCTL_SHA_INIT_REQ:
case COMPAT_QCEDEV_IOCTL_SHA_UPDATE_REQ:
case COMPAT_QCEDEV_IOCTL_SHA_FINAL_REQ:
case COMPAT_QCEDEV_IOCTL_GET_CMAC_REQ:
case COMPAT_QCEDEV_IOCTL_GET_SHA_REQ: {
struct compat_qcedev_sha_op_req __user *data32;
struct qcedev_sha_op_req __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(*data));
if (!data)
return -EFAULT;
err = compat_get_qcedev_sha_op_req(data32, data);
if (err)
return err;
ret = qcedev_ioctl(file, convert_cmd(cmd), (unsigned long)data);
err = compat_put_qcedev_sha_op_req(data32, data);
return ret ? ret : err;
}
default:
return -ENOIOCTLCMD;
}
return 0;
}
EXPORT_SYMBOL(compat_qcedev_ioctl);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("QTI 32-64 Compatibility for Crypto driver");
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