diff options
Diffstat (limited to 'drivers/gpu/mali/ump/linux/ump_ukk_wrappers.c')
| -rw-r--r-- | drivers/gpu/mali/ump/linux/ump_ukk_wrappers.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/drivers/gpu/mali/ump/linux/ump_ukk_wrappers.c b/drivers/gpu/mali/ump/linux/ump_ukk_wrappers.c new file mode 100644 index 00000000..49d58d79 --- /dev/null +++ b/drivers/gpu/mali/ump/linux/ump_ukk_wrappers.c @@ -0,0 +1,280 @@ +/* + * Copyright (C) 2010-2014 ARM Limited. All rights reserved. + * + * This program is free software and is provided to you under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence. + * + * A copy of the licence is included with the program, and can also be obtained from Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/** + * @file ump_ukk_wrappers.c + * Defines the wrapper functions which turn Linux IOCTL calls into _ukk_ calls + */ + +#include <asm/uaccess.h> /* user space access */ + +#include "ump_osk.h" +#include "ump_uk_types.h" +#include "ump_ukk.h" +#include "ump_kernel_common.h" + +/* + * IOCTL operation; Negotiate version of IOCTL API + */ +int ump_get_api_version_wrapper(u32 __user *argument, struct ump_session_data *session_data) +{ + _ump_uk_api_version_s version_info; + _mali_osk_errcode_t err; + + /* Sanity check input parameters */ + if (NULL == argument || NULL == session_data) { + MSG_ERR(("NULL parameter in ump_ioctl_get_api_version()\n")); + return -ENOTTY; + } + + /* Copy the user space memory to kernel space (so we safely can read it) */ + if (0 != copy_from_user(&version_info, argument, sizeof(version_info))) { + MSG_ERR(("copy_from_user() in ump_ioctl_get_api_version()\n")); + return -EFAULT; + } + + version_info.ctx = (void *) session_data; + err = _ump_uku_get_api_version(&version_info); + if (_MALI_OSK_ERR_OK != err) { + MSG_ERR(("_ump_uku_get_api_version() failed in ump_ioctl_get_api_version()\n")); + return map_errcode(err); + } + + version_info.ctx = NULL; + + /* Copy ouput data back to user space */ + if (0 != copy_to_user(argument, &version_info, sizeof(version_info))) { + MSG_ERR(("copy_to_user() failed in ump_ioctl_get_api_version()\n")); + return -EFAULT; + } + + return 0; /* success */ +} + + +/* + * IOCTL operation; Release reference to specified UMP memory. + */ +int ump_release_wrapper(u32 __user *argument, struct ump_session_data *session_data) +{ + _ump_uk_release_s release_args; + _mali_osk_errcode_t err; + + /* Sanity check input parameters */ + if (NULL == session_data) { + MSG_ERR(("NULL parameter in ump_ioctl_release()\n")); + return -ENOTTY; + } + + /* Copy the user space memory to kernel space (so we safely can read it) */ + if (0 != copy_from_user(&release_args, argument, sizeof(release_args))) { + MSG_ERR(("copy_from_user() in ump_ioctl_get_api_version()\n")); + return -EFAULT; + } + + release_args.ctx = (void *) session_data; + err = _ump_ukk_release(&release_args); + if (_MALI_OSK_ERR_OK != err) { + MSG_ERR(("_ump_ukk_release() failed in ump_ioctl_release()\n")); + return map_errcode(err); + } + + + return 0; /* success */ +} + +/* + * IOCTL operation; Return size for specified UMP memory. + */ +int ump_size_get_wrapper(u32 __user *argument, struct ump_session_data *session_data) +{ + _ump_uk_size_get_s user_interaction; + _mali_osk_errcode_t err; + + /* Sanity check input parameters */ + if (NULL == argument || NULL == session_data) { + MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n")); + return -ENOTTY; + } + + if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) { + MSG_ERR(("copy_from_user() in ump_ioctl_size_get()\n")); + return -EFAULT; + } + + user_interaction.ctx = (void *) session_data; + err = _ump_ukk_size_get(&user_interaction); + if (_MALI_OSK_ERR_OK != err) { + MSG_ERR(("_ump_ukk_size_get() failed in ump_ioctl_size_get()\n")); + return map_errcode(err); + } + + user_interaction.ctx = NULL; + + if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) { + MSG_ERR(("copy_to_user() failed in ump_ioctl_size_get()\n")); + return -EFAULT; + } + + return 0; /* success */ +} + +/* + * IOCTL operation; Do cache maintenance on specified UMP memory. + */ +int ump_msync_wrapper(u32 __user *argument, struct ump_session_data *session_data) +{ + _ump_uk_msync_s user_interaction; + + /* Sanity check input parameters */ + if (NULL == argument || NULL == session_data) { + MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n")); + return -ENOTTY; + } + + if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) { + MSG_ERR(("copy_from_user() in ump_ioctl_msync()\n")); + return -EFAULT; + } + + user_interaction.ctx = (void *) session_data; + + _ump_ukk_msync(&user_interaction); + + user_interaction.ctx = NULL; + + if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) { + MSG_ERR(("copy_to_user() failed in ump_ioctl_msync()\n")); + return -EFAULT; + } + + return 0; /* success */ +} +int ump_cache_operations_control_wrapper(u32 __user *argument, struct ump_session_data *session_data) +{ + _ump_uk_cache_operations_control_s user_interaction; + + /* Sanity check input parameters */ + if (NULL == argument || NULL == session_data) { + MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n")); + return -ENOTTY; + } + + if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) { + MSG_ERR(("copy_from_user() in ump_ioctl_cache_operations_control()\n")); + return -EFAULT; + } + + user_interaction.ctx = (void *) session_data; + + _ump_ukk_cache_operations_control((_ump_uk_cache_operations_control_s *) &user_interaction); + + user_interaction.ctx = NULL; + +#if 0 /* No data to copy back */ + if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) { + MSG_ERR(("copy_to_user() failed in ump_ioctl_cache_operations_control()\n")); + return -EFAULT; + } +#endif + return 0; /* success */ +} + +int ump_switch_hw_usage_wrapper(u32 __user *argument, struct ump_session_data *session_data) +{ + _ump_uk_switch_hw_usage_s user_interaction; + + /* Sanity check input parameters */ + if (NULL == argument || NULL == session_data) { + MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n")); + return -ENOTTY; + } + + if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) { + MSG_ERR(("copy_from_user() in ump_ioctl_switch_hw_usage()\n")); + return -EFAULT; + } + + user_interaction.ctx = (void *) session_data; + + _ump_ukk_switch_hw_usage(&user_interaction); + + user_interaction.ctx = NULL; + +#if 0 /* No data to copy back */ + if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) { + MSG_ERR(("copy_to_user() failed in ump_ioctl_switch_hw_usage()\n")); + return -EFAULT; + } +#endif + return 0; /* success */ +} + +int ump_lock_wrapper(u32 __user *argument, struct ump_session_data *session_data) +{ + _ump_uk_lock_s user_interaction; + + /* Sanity check input parameters */ + if (NULL == argument || NULL == session_data) { + MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n")); + return -ENOTTY; + } + + if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) { + MSG_ERR(("copy_from_user() in ump_ioctl_switch_hw_usage()\n")); + return -EFAULT; + } + + user_interaction.ctx = (void *) session_data; + + _ump_ukk_lock(&user_interaction); + + user_interaction.ctx = NULL; + +#if 0 /* No data to copy back */ + if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) { + MSG_ERR(("copy_to_user() failed in ump_ioctl_switch_hw_usage()\n")); + return -EFAULT; + } +#endif + + return 0; /* success */ +} + +int ump_unlock_wrapper(u32 __user *argument, struct ump_session_data *session_data) +{ + _ump_uk_unlock_s user_interaction; + + /* Sanity check input parameters */ + if (NULL == argument || NULL == session_data) { + MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n")); + return -ENOTTY; + } + + if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) { + MSG_ERR(("copy_from_user() in ump_ioctl_switch_hw_usage()\n")); + return -EFAULT; + } + + user_interaction.ctx = (void *) session_data; + + _ump_ukk_unlock(&user_interaction); + + user_interaction.ctx = NULL; + +#if 0 /* No data to copy back */ + if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) { + MSG_ERR(("copy_to_user() failed in ump_ioctl_switch_hw_usage()\n")); + return -EFAULT; + } +#endif + + return 0; /* success */ +} |