drivers/misc/mediatek/gpu/mt8127/mali/ump/linux/ump_ukk_wrappers.c

   1 /*
   2  * This confidential and proprietary software may be used only as
   3  * authorised by a licensing agreement from ARM Limited
   4  * (C) COPYRIGHT 2009-2013 ARM Limited
   5  * ALL RIGHTS RESERVED
   6  * The entire notice above must be reproduced on all authorised
   7  * copies and copies may only be made to the extent permitted
   8  * by a licensing agreement from ARM Limited.
   9  */
  10
  11 /**
  12  * @file ump_ukk_wrappers.c
  13  * Defines the wrapper functions which turn Linux IOCTL calls into _ukk_ calls
  14  */
  15
  16 #include <asm/uaccess.h>             /* user space access */
  17
  18 #include "ump_osk.h"
  19 #include "ump_uk_types.h"
  20 #include "ump_ukk.h"
  21 #include "ump_kernel_common.h"
  22
  23 /*
  24  * IOCTL operation; Negotiate version of IOCTL API
  25  */
  26 int ump_get_api_version_wrapper(u32 __user * argument, struct ump_session_data * session_data)
  27 {
  28         _ump_uk_api_version_s version_info;
  29         _mali_osk_errcode_t err;
  30
  31         /* Sanity check input parameters */
  32         if (NULL == argument || NULL == session_data) {
  33                 MSG_ERR(("NULL parameter in ump_ioctl_get_api_version()\n"));
  34                 return -ENOTTY;
  35         }
  36
  37         /* Copy the user space memory to kernel space (so we safely can read it) */
  38         if (0 != copy_from_user(&version_info, argument, sizeof(version_info))) {
  39                 MSG_ERR(("copy_from_user() in ump_ioctl_get_api_version()\n"));
  40                 return -EFAULT;
  41         }
  42
  43         version_info.ctx = (void*) session_data;
  44         err = _ump_uku_get_api_version( &version_info );
  45         if( _MALI_OSK_ERR_OK != err ) {
  46                 MSG_ERR(("_ump_uku_get_api_version() failed in ump_ioctl_get_api_version()\n"));
  47                 return map_errcode(err);
  48         }
  49
  50         version_info.ctx = NULL;
  51
  52         /* Copy ouput data back to user space */
  53         if (0 != copy_to_user(argument, &version_info, sizeof(version_info))) {
  54                 MSG_ERR(("copy_to_user() failed in ump_ioctl_get_api_version()\n"));
  55                 return -EFAULT;
  56         }
  57
  58         return 0; /* success */
  59 }
  60
  61
  62 /*
  63  * IOCTL operation; Release reference to specified UMP memory.
  64  */
  65 int ump_release_wrapper(u32 __user * argument, struct ump_session_data  * session_data)
  66 {
  67         _ump_uk_release_s release_args;
  68         _mali_osk_errcode_t err;
  69
  70         /* Sanity check input parameters */
  71         if (NULL == session_data) {
  72                 MSG_ERR(("NULL parameter in ump_ioctl_release()\n"));
  73                 return -ENOTTY;
  74         }
  75
  76         /* Copy the user space memory to kernel space (so we safely can read it) */
  77         if (0 != copy_from_user(&release_args, argument, sizeof(release_args))) {
  78                 MSG_ERR(("copy_from_user() in ump_ioctl_get_api_version()\n"));
  79                 return -EFAULT;
  80         }
  81
  82         release_args.ctx = (void*) session_data;
  83         err = _ump_ukk_release( &release_args );
  84         if( _MALI_OSK_ERR_OK != err ) {
  85                 MSG_ERR(("_ump_ukk_release() failed in ump_ioctl_release()\n"));
  86                 return map_errcode(err);
  87         }
  88
  89
  90         return 0; /* success */
  91 }
  92
  93 /*
  94  * IOCTL operation; Return size for specified UMP memory.
  95  */
  96 int ump_size_get_wrapper(u32 __user * argument, struct ump_session_data  * session_data)
  97 {
  98         _ump_uk_size_get_s user_interaction;
  99         _mali_osk_errcode_t err;
 100
 101         /* Sanity check input parameters */
 102         if (NULL == argument || NULL == session_data) {
 103                 MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n"));
 104                 return -ENOTTY;
 105         }
 106
 107         if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) {
 108                 MSG_ERR(("copy_from_user() in ump_ioctl_size_get()\n"));
 109                 return -EFAULT;
 110         }
 111
 112         user_interaction.ctx = (void *) session_data;
 113         err = _ump_ukk_size_get( &user_interaction );
 114         if( _MALI_OSK_ERR_OK != err ) {
 115                 MSG_ERR(("_ump_ukk_size_get() failed in ump_ioctl_size_get()\n"));
 116                 return map_errcode(err);
 117         }
 118
 119         user_interaction.ctx = NULL;
 120
 121         if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) {
 122                 MSG_ERR(("copy_to_user() failed in ump_ioctl_size_get()\n"));
 123                 return -EFAULT;
 124         }
 125
 126         return 0; /* success */
 127 }
 128
 129 /*
 130  * IOCTL operation; Do cache maintenance on specified UMP memory.
 131  */
 132 int ump_msync_wrapper(u32 __user * argument, struct ump_session_data  * session_data)
 133 {
 134         _ump_uk_msync_s user_interaction;
 135
 136         /* Sanity check input parameters */
 137         if (NULL == argument || NULL == session_data) {
 138                 MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n"));
 139                 return -ENOTTY;
 140         }
 141
 142         if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) {
 143                 MSG_ERR(("copy_from_user() in ump_ioctl_msync()\n"));
 144                 return -EFAULT;
 145         }
 146
 147         user_interaction.ctx = (void *) session_data;
 148
 149         _ump_ukk_msync( &user_interaction );
 150
 151         user_interaction.ctx = NULL;
 152
 153         if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) {
 154                 MSG_ERR(("copy_to_user() failed in ump_ioctl_msync()\n"));
 155                 return -EFAULT;
 156         }
 157
 158         return 0; /* success */
 159 }
 160 int ump_cache_operations_control_wrapper(u32 __user * argument, struct ump_session_data  * session_data)
 161 {
 162         _ump_uk_cache_operations_control_s user_interaction;
 163
 164         /* Sanity check input parameters */
 165         if (NULL == argument || NULL == session_data) {
 166                 MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n"));
 167                 return -ENOTTY;
 168         }
 169
 170         if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) {
 171                 MSG_ERR(("copy_from_user() in ump_ioctl_cache_operations_control()\n"));
 172                 return -EFAULT;
 173         }
 174
 175         user_interaction.ctx = (void *) session_data;
 176
 177         _ump_ukk_cache_operations_control((_ump_uk_cache_operations_control_s*) &user_interaction );
 178
 179         user_interaction.ctx = NULL;
 180
 181 #if 0  /* No data to copy back */
 182         if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) {
 183                 MSG_ERR(("copy_to_user() failed in ump_ioctl_cache_operations_control()\n"));
 184                 return -EFAULT;
 185         }
 186 #endif
 187         return 0; /* success */
 188 }
 189
 190 int ump_switch_hw_usage_wrapper(u32 __user * argument, struct ump_session_data  * session_data)
 191 {
 192         _ump_uk_switch_hw_usage_s user_interaction;
 193
 194         /* Sanity check input parameters */
 195         if (NULL == argument || NULL == session_data) {
 196                 MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n"));
 197                 return -ENOTTY;
 198         }
 199
 200         if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) {
 201                 MSG_ERR(("copy_from_user() in ump_ioctl_switch_hw_usage()\n"));
 202                 return -EFAULT;
 203         }
 204
 205         user_interaction.ctx = (void *) session_data;
 206
 207         _ump_ukk_switch_hw_usage( &user_interaction );
 208
 209         user_interaction.ctx = NULL;
 210
 211 #if 0  /* No data to copy back */
 212         if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) {
 213                 MSG_ERR(("copy_to_user() failed in ump_ioctl_switch_hw_usage()\n"));
 214                 return -EFAULT;
 215         }
 216 #endif
 217         return 0; /* success */
 218 }
 219
 220 int ump_lock_wrapper(u32 __user * argument, struct ump_session_data  * session_data)
 221 {
 222         _ump_uk_lock_s user_interaction;
 223
 224         /* Sanity check input parameters */
 225         if (NULL == argument || NULL == session_data) {
 226                 MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n"));
 227                 return -ENOTTY;
 228         }
 229
 230         if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) {
 231                 MSG_ERR(("copy_from_user() in ump_ioctl_switch_hw_usage()\n"));
 232                 return -EFAULT;
 233         }
 234
 235         user_interaction.ctx = (void *) session_data;
 236
 237         _ump_ukk_lock( &user_interaction );
 238
 239         user_interaction.ctx = NULL;
 240
 241 #if 0  /* No data to copy back */
 242         if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) {
 243                 MSG_ERR(("copy_to_user() failed in ump_ioctl_switch_hw_usage()\n"));
 244                 return -EFAULT;
 245         }
 246 #endif
 247
 248         return 0; /* success */
 249 }
 250
 251 int ump_unlock_wrapper(u32 __user * argument, struct ump_session_data  * session_data)
 252 {
 253         _ump_uk_unlock_s user_interaction;
 254
 255         /* Sanity check input parameters */
 256         if (NULL == argument || NULL == session_data) {
 257                 MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n"));
 258                 return -ENOTTY;
 259         }
 260
 261         if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction))) {
 262                 MSG_ERR(("copy_from_user() in ump_ioctl_switch_hw_usage()\n"));
 263                 return -EFAULT;
 264         }
 265
 266         user_interaction.ctx = (void *) session_data;
 267
 268         _ump_ukk_unlock( &user_interaction );
 269
 270         user_interaction.ctx = NULL;
 271
 272 #if 0  /* No data to copy back */
 273         if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction))) {
 274                 MSG_ERR(("copy_to_user() failed in ump_ioctl_switch_hw_usage()\n"));
 275                 return -EFAULT;
 276         }
 277 #endif
 278
 279         return 0; /* success */
 280 }