/* * 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 /* 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 */ }