drivers/gpu/arm/mali400/mali/linux/mali_kernel_linux.c

   1 /**
   2  * Copyright (C) 2010-2015 ARM Limited. All rights reserved.
   3  *
   4  * This program is free software and is provided to you under the terms of the GNU General Public License version 2
   5  * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
   6  *
   7  * A copy of the licence is included with the program, and can also be obtained from Free Software
   8  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
   9  */
  10
  11
  12 /**
  13  * @file mali_kernel_linux.c
  14  * Implementation of the Linux device driver entrypoints
  15  */
  16 #include "../platform/rk30/custom_log.h"
  17 #include "../platform/rk30/rk_ext.h"
  18
  19 #include <linux/module.h>   /* kernel module definitions */
  20 #include <linux/fs.h>       /* file system operations */
  21 #include <linux/cdev.h>     /* character device definitions */
  22 #include <linux/mm.h>       /* memory manager definitions */
  23 #include <linux/mali/mali_utgard_ioctl.h>
  24 #include <linux/version.h>
  25 #include <linux/device.h>
  26 #include "mali_kernel_license.h"
  27 #include <linux/platform_device.h>
  28 #include <linux/miscdevice.h>
  29 #include <linux/bug.h>
  30 #include <linux/of.h>
  31
  32 #include <linux/mali/mali_utgard.h>
  33 #include "mali_kernel_common.h"
  34 #include "mali_session.h"
  35 #include "mali_kernel_core.h"
  36 #include "mali_osk.h"
  37 #include "mali_kernel_linux.h"
  38 #include "mali_ukk.h"
  39 #include "mali_ukk_wrappers.h"
  40 #include "mali_kernel_sysfs.h"
  41 #include "mali_pm.h"
  42 #include "mali_kernel_license.h"
  43 #include "mali_memory.h"
  44 #include "mali_memory_dma_buf.h"
  45 #include "mali_memory_manager.h"
  46 #include "mali_memory_swap_alloc.h"
  47 #if defined(CONFIG_MALI400_INTERNAL_PROFILING)
  48 #include "mali_profiling_internal.h"
  49 #endif
  50 #if defined(CONFIG_MALI400_PROFILING) && defined(CONFIG_MALI_DVFS)
  51 #include "mali_osk_profiling.h"
  52 #include "mali_dvfs_policy.h"
  53
  54 static int is_first_resume = 1;
  55 /*Store the clk and vol for boot/insmod and mali_resume*/
  56 static struct mali_gpu_clk_item mali_gpu_clk[2];
  57 #endif
  58
  59 /* Streamline support for the Mali driver */
  60 #if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_MALI400_PROFILING)
  61 /* Ask Linux to create the tracepoints */
  62 #define CREATE_TRACE_POINTS
  63 #include "mali_linux_trace.h"
  64
  65 EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_event);
  66 EXPORT_TRACEPOINT_SYMBOL_GPL(mali_hw_counter);
  67 EXPORT_TRACEPOINT_SYMBOL_GPL(mali_sw_counters);
  68 #endif /* CONFIG_TRACEPOINTS */
  69
  70 /* from the __malidrv_build_info.c file that is generated during build */
  71 extern const char *__malidrv_build_info(void);
  72
  73 /* Module parameter to control log level */
  74 int mali_debug_level = 2;
  75 module_param(mali_debug_level, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH); /* rw-rw-r-- */
  76 MODULE_PARM_DESC(mali_debug_level, "Higher number, more dmesg output");
  77
  78 extern int mali_max_job_runtime;
  79 module_param(mali_max_job_runtime, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH);
  80 MODULE_PARM_DESC(mali_max_job_runtime, "Maximum allowed job runtime in msecs.\nJobs will be killed after this no matter what");
  81
  82 extern int mali_l2_max_reads;
  83 module_param(mali_l2_max_reads, int, S_IRUSR | S_IRGRP | S_IROTH);
  84 MODULE_PARM_DESC(mali_l2_max_reads, "Maximum reads for Mali L2 cache");
  85
  86 extern unsigned int mali_dedicated_mem_start;
  87 module_param(mali_dedicated_mem_start, uint, S_IRUSR | S_IRGRP | S_IROTH);
  88 MODULE_PARM_DESC(mali_dedicated_mem_start, "Physical start address of dedicated Mali GPU memory.");
  89
  90 extern unsigned int mali_dedicated_mem_size;
  91 module_param(mali_dedicated_mem_size, uint, S_IRUSR | S_IRGRP | S_IROTH);
  92 MODULE_PARM_DESC(mali_dedicated_mem_size, "Size of dedicated Mali GPU memory.");
  93
  94 extern unsigned int mali_shared_mem_size;
  95 module_param(mali_shared_mem_size, uint, S_IRUSR | S_IRGRP | S_IROTH);
  96 MODULE_PARM_DESC(mali_shared_mem_size, "Size of shared Mali GPU memory.");
  97
  98 #if defined(CONFIG_MALI400_PROFILING)
  99 extern int mali_boot_profiling;
 100 module_param(mali_boot_profiling, int, S_IRUSR | S_IRGRP | S_IROTH);
 101 MODULE_PARM_DESC(mali_boot_profiling, "Start profiling as a part of Mali driver initialization");
 102 #endif
 103
 104 extern int mali_max_pp_cores_group_1;
 105 module_param(mali_max_pp_cores_group_1, int, S_IRUSR | S_IRGRP | S_IROTH);
 106 MODULE_PARM_DESC(mali_max_pp_cores_group_1, "Limit the number of PP cores to use from first PP group.");
 107
 108 extern int mali_max_pp_cores_group_2;
 109 module_param(mali_max_pp_cores_group_2, int, S_IRUSR | S_IRGRP | S_IROTH);
 110 MODULE_PARM_DESC(mali_max_pp_cores_group_2, "Limit the number of PP cores to use from second PP group (Mali-450 only).");
 111
 112 extern unsigned int mali_mem_swap_out_threshold_value;
 113 module_param(mali_mem_swap_out_threshold_value, uint, S_IRUSR | S_IRGRP | S_IROTH);
 114 MODULE_PARM_DESC(mali_mem_swap_out_threshold_value, "Threshold value used to limit how much swappable memory cached in Mali driver.");
 115
 116 #if defined(CONFIG_MALI_DVFS)
 117 /** the max fps the same as display vsync default 60, can set by module insert parameter */
 118 extern int mali_max_system_fps;
 119 module_param(mali_max_system_fps, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH);
 120 MODULE_PARM_DESC(mali_max_system_fps, "Max system fps the same as display VSYNC.");
 121
 122 /** a lower limit on their desired FPS default 58, can set by module insert parameter*/
 123 extern int mali_desired_fps;
 124 module_param(mali_desired_fps, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH);
 125 MODULE_PARM_DESC(mali_desired_fps, "A bit lower than max_system_fps which user desired fps");
 126 #endif
 127
 128 #if MALI_ENABLE_CPU_CYCLES
 129 #include <linux/cpumask.h>
 130 #include <linux/timer.h>
 131 #include <asm/smp.h>
 132 static struct timer_list mali_init_cpu_clock_timers[8];
 133 static u32 mali_cpu_clock_last_value[8] = {0,};
 134 #endif
 135
 136 /* Export symbols from common code: mali_user_settings.c */
 137 #include "mali_user_settings_db.h"
 138 EXPORT_SYMBOL(mali_set_user_setting);
 139 EXPORT_SYMBOL(mali_get_user_setting);
 140
 141 static char mali_dev_name[] = "mali"; /* should be const, but the functions we call requires non-cost */
 142
 143 /* This driver only supports one Mali device, and this variable stores this single platform device */
 144 struct platform_device *mali_platform_device = NULL;
 145
 146 /* This driver only supports one Mali device, and this variable stores the exposed misc device (/dev/mali) */
 147 static struct miscdevice mali_miscdevice = { 0, };
 148
 149 static int mali_miscdevice_register(struct platform_device *pdev);
 150 static void mali_miscdevice_unregister(void);
 151
 152 static int mali_open(struct inode *inode, struct file *filp);
 153 static int mali_release(struct inode *inode, struct file *filp);
 154 #ifdef HAVE_UNLOCKED_IOCTL
 155 static long mali_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
 156 #else
 157 static int mali_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
 158 #endif
 159
 160 static int mali_probe(struct platform_device *pdev);
 161 static int mali_remove(struct platform_device *pdev);
 162
 163 static int mali_driver_suspend_scheduler(struct device *dev);
 164 static int mali_driver_resume_scheduler(struct device *dev);
 165
 166 #ifdef CONFIG_PM_RUNTIME
 167 static int mali_driver_runtime_suspend(struct device *dev);
 168 static int mali_driver_runtime_resume(struct device *dev);
 169 static int mali_driver_runtime_idle(struct device *dev);
 170 #endif
 171
 172 #if defined(MALI_FAKE_PLATFORM_DEVICE)
 173 #if defined(CONFIG_MALI_DT)
 174 extern int mali_platform_device_init(struct platform_device *device);
 175 extern int mali_platform_device_deinit(struct platform_device *device);
 176 #else
 177 extern int mali_platform_device_register(void);
 178 extern int mali_platform_device_unregister(void);
 179 #endif
 180 #endif
 181
 182 /* Linux power management operations provided by the Mali device driver */
 183 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29))
 184 struct pm_ext_ops mali_dev_ext_pm_ops = {
 185         .base =
 186         {
 187                 .suspend = mali_driver_suspend_scheduler,
 188                 .resume = mali_driver_resume_scheduler,
 189                 .freeze = mali_driver_suspend_scheduler,
 190                 .thaw =   mali_driver_resume_scheduler,
 191         },
 192 };
 193 #else
 194 static const struct dev_pm_ops mali_dev_pm_ops = {
 195 #ifdef CONFIG_PM_RUNTIME
 196         .runtime_suspend = mali_driver_runtime_suspend,
 197         .runtime_resume = mali_driver_runtime_resume,
 198         .runtime_idle = mali_driver_runtime_idle,
 199 #endif
 200         .suspend = mali_driver_suspend_scheduler,
 201         .resume = mali_driver_resume_scheduler,
 202         .freeze = mali_driver_suspend_scheduler,
 203         .thaw = mali_driver_resume_scheduler,
 204         .poweroff = mali_driver_suspend_scheduler,
 205 };
 206 #endif
 207
 208 #ifdef CONFIG_MALI_DT
 209 static struct of_device_id base_dt_ids[] = {
 210         {.compatible = "arm,mali-300"},
 211     /*-------------------------------------------------------*/
 212     /* rk_ext : to use dts_for_mali_ko_befor_r5p0-01rel0. */
 213         // {.compatible = "arm,mali-400"},
 214         {.compatible = "arm,mali400"},
 215     /*-------------------------------------------------------*/
 216         {.compatible = "arm,mali-450"},
 217         {.compatible = "arm,mali-470"},
 218         {},
 219 };
 220
 221 MODULE_DEVICE_TABLE(of, base_dt_ids);
 222 #endif
 223
 224 /* The Mali device driver struct */
 225 static struct platform_driver mali_platform_driver = {
 226         .probe  = mali_probe,
 227         .remove = mali_remove,
 228 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29))
 229         .pm = &mali_dev_ext_pm_ops,
 230 #endif
 231         .driver =
 232         {
 233                 .name   = MALI_GPU_NAME_UTGARD,
 234                 .owner  = THIS_MODULE,
 235                 .bus = &platform_bus_type,
 236 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 29))
 237                 .pm = &mali_dev_pm_ops,
 238 #endif
 239 #ifdef CONFIG_MALI_DT
 240                 .of_match_table = of_match_ptr(base_dt_ids),
 241 #endif
 242         },
 243 };
 244
 245 /* Linux misc device operations (/dev/mali) */
 246 struct file_operations mali_fops = {
 247         .owner = THIS_MODULE,
 248         .open = mali_open,
 249         .release = mali_release,
 250 #ifdef HAVE_UNLOCKED_IOCTL
 251         .unlocked_ioctl = mali_ioctl,
 252 #else
 253         .ioctl = mali_ioctl,
 254 #endif
 255         .compat_ioctl = mali_ioctl,
 256         .mmap = mali_mmap
 257 };
 258
 259 #if MALI_ENABLE_CPU_CYCLES
 260 void mali_init_cpu_time_counters(int reset, int enable_divide_by_64)
 261 {
 262         /* The CPU assembly reference used is: ARM Architecture Reference Manual ARMv7-AR C.b */
 263         u32 write_value;
 264
 265         /* See B4.1.116 PMCNTENSET, Performance Monitors Count Enable Set register, VMSA */
 266         /* setting p15 c9 c12 1 to 0x8000000f==CPU_CYCLE_ENABLE |EVENT_3_ENABLE|EVENT_2_ENABLE|EVENT_1_ENABLE|EVENT_0_ENABLE */
 267         asm volatile("mcr p15, 0, %0, c9, c12, 1" :: "r"(0x8000000f));
 268
 269
 270         /* See B4.1.117 PMCR, Performance Monitors Control Register. Writing to p15, c9, c12, 0 */
 271         write_value = 1 << 0; /* Bit 0 set. Enable counters */
 272         if (reset) {
 273                 write_value |= 1 << 1; /* Reset event counters */
 274                 write_value |= 1 << 2; /* Reset cycle counter  */
 275         }
 276         if (enable_divide_by_64) {
 277                 write_value |= 1 << 3; /* Enable the Clock divider by 64 */
 278         }
 279         write_value |= 1 << 4; /* Export enable. Not needed */
 280         asm volatile("MCR p15, 0, %0, c9, c12, 0\t\n" :: "r"(write_value));
 281
 282         /* PMOVSR Overflow Flag Status Register - Clear Clock and Event overflows */
 283         asm volatile("MCR p15, 0, %0, c9, c12, 3\t\n" :: "r"(0x8000000f));
 284
 285
 286         /* See B4.1.124 PMUSERENR - setting p15 c9 c14 to 1" */
 287         /* User mode access to the Performance Monitors enabled. */
 288         /* Lets User space read cpu clock cycles */
 289         asm volatile("mcr p15, 0, %0, c9, c14, 0" :: "r"(1));
 290 }
 291
 292 /** A timer function that configures the cycle clock counter on current CPU.
 293  * The function \a mali_init_cpu_time_counters_on_all_cpus sets up this
 294  * function to trigger on all Cpus during module load.
 295  */
 296 static void mali_init_cpu_clock_timer_func(unsigned long data)
 297 {
 298         int reset_counters, enable_divide_clock_counter_by_64;
 299         int current_cpu = raw_smp_processor_id();
 300         unsigned int sample0;
 301         unsigned int sample1;
 302
 303         MALI_IGNORE(data);
 304
 305         reset_counters = 1;
 306         enable_divide_clock_counter_by_64 = 0;
 307         mali_init_cpu_time_counters(reset_counters, enable_divide_clock_counter_by_64);
 308
 309         sample0 = mali_get_cpu_cyclecount();
 310         sample1 = mali_get_cpu_cyclecount();
 311
 312         MALI_DEBUG_PRINT(3, ("Init Cpu %d cycle counter- First two samples: %08x %08x \n", current_cpu, sample0, sample1));
 313 }
 314
 315 /** A timer functions for storing current time on all cpus.
 316  * Used for checking if the clocks have similar values or if they are drifting.
 317  */
 318 static void mali_print_cpu_clock_timer_func(unsigned long data)
 319 {
 320         int current_cpu = raw_smp_processor_id();
 321         unsigned int sample0;
 322
 323         MALI_IGNORE(data);
 324         sample0 = mali_get_cpu_cyclecount();
 325         if (current_cpu < 8) {
 326                 mali_cpu_clock_last_value[current_cpu] = sample0;
 327         }
 328 }
 329
 330 /** Init the performance registers on all CPUs to count clock cycles.
 331  * For init \a print_only should be 0.
 332  * If \a print_only is 1, it will intead print the current clock value of all CPUs.
 333  */
 334 void mali_init_cpu_time_counters_on_all_cpus(int print_only)
 335 {
 336         int i = 0;
 337         int cpu_number;
 338         int jiffies_trigger;
 339         int jiffies_wait;
 340
 341         jiffies_wait = 2;
 342         jiffies_trigger = jiffies + jiffies_wait;
 343
 344         for (i = 0 ; i < 8 ; i++) {
 345                 init_timer(&mali_init_cpu_clock_timers[i]);
 346                 if (print_only) mali_init_cpu_clock_timers[i].function = mali_print_cpu_clock_timer_func;
 347                 else            mali_init_cpu_clock_timers[i].function = mali_init_cpu_clock_timer_func;
 348                 mali_init_cpu_clock_timers[i].expires = jiffies_trigger ;
 349         }
 350         cpu_number = cpumask_first(cpu_online_mask);
 351         for (i = 0 ; i < 8 ; i++) {
 352                 int next_cpu;
 353                 add_timer_on(&mali_init_cpu_clock_timers[i], cpu_number);
 354                 next_cpu = cpumask_next(cpu_number, cpu_online_mask);
 355                 if (next_cpu >= nr_cpu_ids) break;
 356                 cpu_number = next_cpu;
 357         }
 358
 359         while (jiffies_wait) jiffies_wait = schedule_timeout_uninterruptible(jiffies_wait);
 360
 361         for (i = 0 ; i < 8 ; i++) {
 362                 del_timer_sync(&mali_init_cpu_clock_timers[i]);
 363         }
 364
 365         if (print_only) {
 366                 if ((0 == mali_cpu_clock_last_value[2]) && (0 == mali_cpu_clock_last_value[3])) {
 367                         /* Diff can be printed if we want to check if the clocks are in sync
 368                         int diff = mali_cpu_clock_last_value[0] - mali_cpu_clock_last_value[1];*/
 369                         MALI_DEBUG_PRINT(2, ("CPU cycle counters readout all: %08x %08x\n", mali_cpu_clock_last_value[0], mali_cpu_clock_last_value[1]));
 370                 } else {
 371                         MALI_DEBUG_PRINT(2, ("CPU cycle counters readout all: %08x %08x %08x %08x\n", mali_cpu_clock_last_value[0], mali_cpu_clock_last_value[1], mali_cpu_clock_last_value[2], mali_cpu_clock_last_value[3]));
 372                 }
 373         }
 374 }
 375 #endif
 376
 377 int mali_module_init(void)
 378 {
 379         int err = 0;
 380
 381         MALI_DEBUG_PRINT(2, ("Inserting Mali v%d device driver. \n", _MALI_API_VERSION));
 382         MALI_DEBUG_PRINT(2, ("Compiled: %s, time: %s.\n", __DATE__, __TIME__));
 383         MALI_DEBUG_PRINT(2, ("Driver revision: %s\n", SVN_REV_STRING));
 384
 385         I("svn_rev_string_from_arm of this mali_ko is '%s', rk_ko_ver is '%d', built at '%s', on '%s'.",
 386                 SVN_REV_STRING,
 387                 RK_KO_VER,
 388                 __TIME__,
 389                 __DATE__);
 390
 391 #if MALI_ENABLE_CPU_CYCLES
 392         mali_init_cpu_time_counters_on_all_cpus(0);
 393         MALI_DEBUG_PRINT(2, ("CPU cycle counter setup complete\n"));
 394         /* Printing the current cpu counters */
 395         mali_init_cpu_time_counters_on_all_cpus(1);
 396 #endif
 397
 398         /* Initialize module wide settings */
 399 #ifdef MALI_FAKE_PLATFORM_DEVICE
 400 #ifndef CONFIG_MALI_DT
 401         MALI_DEBUG_PRINT(2, ("mali_module_init() registering device\n"));
 402         err = mali_platform_device_register();
 403         if (0 != err) {
 404                 return err;
 405         }
 406 #endif
 407 #endif
 408
 409         MALI_DEBUG_PRINT(2, ("mali_module_init() registering driver\n"));
 410
 411         err = platform_driver_register(&mali_platform_driver);
 412
 413         if (0 != err) {
 414                 MALI_DEBUG_PRINT(2, ("mali_module_init() Failed to register driver (%d)\n", err));
 415 #ifdef MALI_FAKE_PLATFORM_DEVICE
 416 #ifndef CONFIG_MALI_DT
 417                 mali_platform_device_unregister();
 418 #endif
 419 #endif
 420                 mali_platform_device = NULL;
 421                 return err;
 422         }
 423
 424 #if defined(CONFIG_MALI400_INTERNAL_PROFILING)
 425         err = _mali_internal_profiling_init(mali_boot_profiling ? MALI_TRUE : MALI_FALSE);
 426         if (0 != err) {
 427                 /* No biggie if we wheren't able to initialize the profiling */
 428                 MALI_PRINT_ERROR(("Failed to initialize profiling, feature will be unavailable\n"));
 429         }
 430 #endif
 431
 432         /* Tracing the current frequency and voltage from boot/insmod*/
 433 #if defined(CONFIG_MALI400_PROFILING) && defined(CONFIG_MALI_DVFS)
 434         /* Just call mali_get_current_gpu_clk_item(),to record current clk info.*/
 435         mali_get_current_gpu_clk_item(&mali_gpu_clk[0]);
 436         _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 437                                       MALI_PROFILING_EVENT_CHANNEL_GPU |
 438                                       MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 439                                       mali_gpu_clk[0].clock,
 440                                       mali_gpu_clk[0].vol / 1000,
 441                                       0, 0, 0);
 442 #endif
 443
 444         MALI_PRINT(("Mali device driver loaded\n"));
 445
 446         return 0; /* Success */
 447 }
 448
 449 void mali_module_exit(void)
 450 {
 451         MALI_DEBUG_PRINT(2, ("Unloading Mali v%d device driver.\n", _MALI_API_VERSION));
 452
 453         MALI_DEBUG_PRINT(2, ("mali_module_exit() unregistering driver\n"));
 454
 455         platform_driver_unregister(&mali_platform_driver);
 456
 457 #if defined(MALI_FAKE_PLATFORM_DEVICE)
 458 #ifndef CONFIG_MALI_DT
 459         MALI_DEBUG_PRINT(2, ("mali_module_exit() unregistering device\n"));
 460         mali_platform_device_unregister();
 461 #endif
 462 #endif
 463
 464         /* Tracing the current frequency and voltage from rmmod*/
 465         _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 466                                       MALI_PROFILING_EVENT_CHANNEL_GPU |
 467                                       MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 468                                       0,
 469                                       0,
 470                                       0, 0, 0);
 471
 472 #if defined(CONFIG_MALI400_INTERNAL_PROFILING)
 473         _mali_internal_profiling_term();
 474 #endif
 475
 476         MALI_PRINT(("Mali device driver unloaded\n"));
 477 }
 478
 479 static int mali_probe(struct platform_device *pdev)
 480 {
 481         int err;
 482
 483         MALI_DEBUG_PRINT(2, ("mali_probe(): Called for platform device %s\n", pdev->name));
 484
 485         if (NULL != mali_platform_device) {
 486                 /* Already connected to a device, return error */
 487                 MALI_PRINT_ERROR(("mali_probe(): The Mali driver is already connected with a Mali device."));
 488                 return -EEXIST;
 489         }
 490
 491         mali_platform_device = pdev;
 492
 493         dev_info(&pdev->dev, "mali_platform_device->num_resources = %d\n",
 494                 mali_platform_device->num_resources);
 495
 496         {
 497                 int i = 0;
 498
 499                 for(i = 0; i < mali_platform_device->num_resources; i++)
 500                         dev_info(&pdev->dev, "mali_platform_device->resource[%d].start = 0x%08x\n",
 501                                 i, mali_platform_device->resource[i].start);
 502         }
 503
 504 #ifdef CONFIG_MALI_DT
 505         /* If we use DT to initialize our DDK, we have to prepare somethings. */
 506         err = mali_platform_device_init(mali_platform_device);
 507         if (0 != err) {
 508                 MALI_PRINT_ERROR(("mali_probe(): Failed to initialize platform device."));
 509                 return -EFAULT;
 510         }
 511 #endif
 512
 513         if (_MALI_OSK_ERR_OK == _mali_osk_wq_init()) {
 514                 /* Initialize the Mali GPU HW specified by pdev */
 515                 if (_MALI_OSK_ERR_OK == mali_initialize_subsystems()) {
 516                         /* Register a misc device (so we are accessible from user space) */
 517                         err = mali_miscdevice_register(pdev);
 518                         if (0 == err) {
 519                                 /* Setup sysfs entries */
 520                                 err = mali_sysfs_register(mali_dev_name);
 521
 522                                 if (0 == err) {
 523                                         MALI_DEBUG_PRINT(2, ("mali_probe(): Successfully initialized driver for platform device %s\n", pdev->name));
 524
 525                                         return 0;
 526                                 } else {
 527                                         MALI_PRINT_ERROR(("mali_probe(): failed to register sysfs entries"));
 528                                 }
 529                                 mali_miscdevice_unregister();
 530                         } else {
 531                                 MALI_PRINT_ERROR(("mali_probe(): failed to register Mali misc device."));
 532                         }
 533                         mali_terminate_subsystems();
 534                 } else {
 535                         MALI_PRINT_ERROR(("mali_probe(): Failed to initialize Mali device driver."));
 536                 }
 537                 _mali_osk_wq_term();
 538         }
 539
 540         mali_platform_device = NULL;
 541         return -EFAULT;
 542 }
 543
 544 static int mali_remove(struct platform_device *pdev)
 545 {
 546         MALI_DEBUG_PRINT(2, ("mali_remove() called for platform device %s\n", pdev->name));
 547         mali_sysfs_unregister();
 548         mali_miscdevice_unregister();
 549         mali_terminate_subsystems();
 550         _mali_osk_wq_term();
 551 #ifdef CONFIG_MALI_DT
 552         mali_platform_device_deinit(mali_platform_device);
 553 #endif
 554         mali_platform_device = NULL;
 555         return 0;
 556 }
 557
 558 static int mali_miscdevice_register(struct platform_device *pdev)
 559 {
 560         int err;
 561
 562         mali_miscdevice.minor = MISC_DYNAMIC_MINOR;
 563         mali_miscdevice.name = mali_dev_name;
 564         mali_miscdevice.fops = &mali_fops;
 565         mali_miscdevice.parent = get_device(&pdev->dev);
 566
 567         err = misc_register(&mali_miscdevice);
 568         if (0 != err) {
 569                 MALI_PRINT_ERROR(("Failed to register misc device, misc_register() returned %d\n", err));
 570         }
 571
 572         return err;
 573 }
 574
 575 static void mali_miscdevice_unregister(void)
 576 {
 577         misc_deregister(&mali_miscdevice);
 578 }
 579
 580 static int mali_driver_suspend_scheduler(struct device *dev)
 581 {
 582         mali_pm_os_suspend(MALI_TRUE);
 583         /* Tracing the frequency and voltage after mali is suspended */
 584         _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 585                                       MALI_PROFILING_EVENT_CHANNEL_GPU |
 586                                       MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 587                                       0,
 588                                       0,
 589                                       0, 0, 0);
 590         return 0;
 591 }
 592
 593 static int mali_driver_resume_scheduler(struct device *dev)
 594 {
 595         /* Tracing the frequency and voltage after mali is resumed */
 596 #if defined(CONFIG_MALI400_PROFILING) && defined(CONFIG_MALI_DVFS)
 597         /* Just call mali_get_current_gpu_clk_item() once,to record current clk info.*/
 598         if (is_first_resume == 1) {
 599                 mali_get_current_gpu_clk_item(&mali_gpu_clk[1]);
 600                 is_first_resume = 0;
 601         }
 602         _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 603                                       MALI_PROFILING_EVENT_CHANNEL_GPU |
 604                                       MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 605                                       mali_gpu_clk[1].clock,
 606                                       mali_gpu_clk[1].vol / 1000,
 607                                       0, 0, 0);
 608 #endif
 609         mali_pm_os_resume();
 610         return 0;
 611 }
 612
 613 #ifdef CONFIG_PM_RUNTIME
 614 static int mali_driver_runtime_suspend(struct device *dev)
 615 {
 616         if (MALI_TRUE == mali_pm_runtime_suspend()) {
 617                 /* Tracing the frequency and voltage after mali is suspended */
 618                 _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 619                                               MALI_PROFILING_EVENT_CHANNEL_GPU |
 620                                               MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 621                                               0,
 622                                               0,
 623                                               0, 0, 0);
 624
 625                 return 0;
 626         } else {
 627                 return -EBUSY;
 628         }
 629 }
 630
 631 static int mali_driver_runtime_resume(struct device *dev)
 632 {
 633         /* Tracing the frequency and voltage after mali is resumed */
 634 #if defined(CONFIG_MALI400_PROFILING) && defined(CONFIG_MALI_DVFS)
 635         /* Just call mali_get_current_gpu_clk_item() once,to record current clk info.*/
 636         if (is_first_resume == 1) {
 637                 mali_get_current_gpu_clk_item(&mali_gpu_clk[1]);
 638                 is_first_resume = 0;
 639         }
 640         _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 641                                       MALI_PROFILING_EVENT_CHANNEL_GPU |
 642                                       MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 643                                       mali_gpu_clk[1].clock,
 644                                       mali_gpu_clk[1].vol / 1000,
 645                                       0, 0, 0);
 646 #endif
 647
 648         mali_pm_runtime_resume();
 649         return 0;
 650 }
 651
 652 static int mali_driver_runtime_idle(struct device *dev)
 653 {
 654         /* Nothing to do */
 655         return 0;
 656 }
 657 #endif
 658
 659 static int mali_open(struct inode *inode, struct file *filp)
 660 {
 661         struct mali_session_data *session_data;
 662         _mali_osk_errcode_t err;
 663
 664         /* input validation */
 665         if (mali_miscdevice.minor != iminor(inode)) {
 666                 MALI_PRINT_ERROR(("mali_open() Minor does not match\n"));
 667                 return -ENODEV;
 668         }
 669
 670         /* allocated struct to track this session */
 671         err = _mali_ukk_open((void **)&session_data);
 672         if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
 673
 674         /* initialize file pointer */
 675         filp->f_pos = 0;
 676
 677         /* link in our session data */
 678         filp->private_data = (void *)session_data;
 679
 680         filp->f_mapping = mali_mem_swap_get_global_swap_file()->f_mapping;
 681
 682         return 0;
 683 }
 684
 685 static int mali_release(struct inode *inode, struct file *filp)
 686 {
 687         _mali_osk_errcode_t err;
 688
 689         /* input validation */
 690         if (mali_miscdevice.minor != iminor(inode)) {
 691                 MALI_PRINT_ERROR(("mali_release() Minor does not match\n"));
 692                 return -ENODEV;
 693         }
 694
 695         err = _mali_ukk_close((void **)&filp->private_data);
 696         if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
 697
 698         return 0;
 699 }
 700
 701 int map_errcode(_mali_osk_errcode_t err)
 702 {
 703         switch (err) {
 704         case _MALI_OSK_ERR_OK :
 705                 return 0;
 706         case _MALI_OSK_ERR_FAULT:
 707                 return -EFAULT;
 708         case _MALI_OSK_ERR_INVALID_FUNC:
 709                 return -ENOTTY;
 710         case _MALI_OSK_ERR_INVALID_ARGS:
 711                 return -EINVAL;
 712         case _MALI_OSK_ERR_NOMEM:
 713                 return -ENOMEM;
 714         case _MALI_OSK_ERR_TIMEOUT:
 715                 return -ETIMEDOUT;
 716         case _MALI_OSK_ERR_RESTARTSYSCALL:
 717                 return -ERESTARTSYS;
 718         case _MALI_OSK_ERR_ITEM_NOT_FOUND:
 719                 return -ENOENT;
 720         default:
 721                 return -EFAULT;
 722         }
 723 }
 724
 725 #ifdef HAVE_UNLOCKED_IOCTL
 726 static long mali_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 727 #else
 728 static int mali_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
 729 #endif
 730 {
 731         int err;
 732         struct mali_session_data *session_data;
 733
 734 #ifndef HAVE_UNLOCKED_IOCTL
 735         /* inode not used */
 736         (void)inode;
 737 #endif
 738
 739         MALI_DEBUG_PRINT(7, ("Ioctl received 0x%08X 0x%08lX\n", cmd, arg));
 740
 741         session_data = (struct mali_session_data *)filp->private_data;
 742         if (NULL == session_data) {
 743                 MALI_DEBUG_PRINT(7, ("filp->private_data was NULL\n"));
 744                 return -ENOTTY;
 745         }
 746
 747         if (NULL == (void *)arg) {
 748                 MALI_DEBUG_PRINT(7, ("arg was NULL\n"));
 749                 return -ENOTTY;
 750         }
 751
 752         switch (cmd) {
 753         case MALI_IOC_WAIT_FOR_NOTIFICATION:
 754                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_wait_for_notification_s), sizeof(u64)));
 755                 err = wait_for_notification_wrapper(session_data, (_mali_uk_wait_for_notification_s __user *)arg);
 756                 break;
 757
 758         case MALI_IOC_GET_API_VERSION_V2:
 759                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_api_version_v2_s), sizeof(u64)));
 760                 err = get_api_version_v2_wrapper(session_data, (_mali_uk_get_api_version_v2_s __user *)arg);
 761                 break;
 762
 763         case MALI_IOC_GET_API_VERSION:
 764                 err = get_api_version_wrapper(session_data, (_mali_uk_get_api_version_s __user *)arg);
 765                 break;
 766
 767         case MALI_IOC_POST_NOTIFICATION:
 768                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_post_notification_s), sizeof(u64)));
 769                 err = post_notification_wrapper(session_data, (_mali_uk_post_notification_s __user *)arg);
 770                 break;
 771
 772     /* rk_ext : 从对 r5p0-01rel0 集成开始, 不再使用. */
 773 #if 0
 774         case MALI_IOC_GET_MALI_VERSION_IN_RK30:
 775                 err = get_mali_version_in_rk30_wrapper(session_data, (_mali_uk_get_mali_version_in_rk30_s __user *)arg);
 776                 break;
 777 #else
 778     case MALI_IOC_GET_RK_KO_VERSION:
 779                 err = get_rk_ko_version_wrapper(session_data, (_mali_rk_ko_version_s __user *)arg);
 780                 break;
 781 #endif
 782
 783         case MALI_IOC_GET_USER_SETTINGS:
 784                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_user_settings_s), sizeof(u64)));
 785                 err = get_user_settings_wrapper(session_data, (_mali_uk_get_user_settings_s __user *)arg);
 786                 break;
 787
 788         case MALI_IOC_REQUEST_HIGH_PRIORITY:
 789                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_request_high_priority_s), sizeof(u64)));
 790                 err = request_high_priority_wrapper(session_data, (_mali_uk_request_high_priority_s __user *)arg);
 791                 break;
 792
 793         case MALI_IOC_PENDING_SUBMIT:
 794                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_pending_submit_s), sizeof(u64)));
 795                 err = pending_submit_wrapper(session_data, (_mali_uk_pending_submit_s __user *)arg);
 796                 break;
 797
 798 #if defined(CONFIG_MALI400_PROFILING)
 799         case MALI_IOC_PROFILING_ADD_EVENT:
 800                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_profiling_add_event_s), sizeof(u64)));
 801                 err = profiling_add_event_wrapper(session_data, (_mali_uk_profiling_add_event_s __user *)arg);
 802                 break;
 803
 804         case MALI_IOC_PROFILING_REPORT_SW_COUNTERS:
 805                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_sw_counters_report_s), sizeof(u64)));
 806                 err = profiling_report_sw_counters_wrapper(session_data, (_mali_uk_sw_counters_report_s __user *)arg);
 807                 break;
 808
 809         case MALI_IOC_PROFILING_STREAM_FD_GET:
 810                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_profiling_stream_fd_get_s), sizeof(u64)));
 811                 err = profiling_get_stream_fd_wrapper(session_data, (_mali_uk_profiling_stream_fd_get_s __user *)arg);
 812                 break;
 813
 814         case MALI_IOC_PROILING_CONTROL_SET:
 815                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_profiling_control_set_s), sizeof(u64)));
 816                 err = profiling_control_set_wrapper(session_data, (_mali_uk_profiling_control_set_s __user *)arg);
 817                 break;
 818 #else
 819
 820         case MALI_IOC_PROFILING_ADD_EVENT:          /* FALL-THROUGH */
 821         case MALI_IOC_PROFILING_REPORT_SW_COUNTERS: /* FALL-THROUGH */
 822                 MALI_DEBUG_PRINT(2, ("Profiling not supported\n"));
 823                 err = -ENOTTY;
 824                 break;
 825 #endif
 826
 827         case MALI_IOC_PROFILING_MEMORY_USAGE_GET:
 828                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_profiling_memory_usage_get_s), sizeof(u64)));
 829                 err = mem_usage_get_wrapper(session_data, (_mali_uk_profiling_memory_usage_get_s __user *)arg);
 830                 break;
 831
 832         case MALI_IOC_MEM_ALLOC:
 833                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_alloc_mem_s), sizeof(u64)));
 834                 err = mem_alloc_wrapper(session_data, (_mali_uk_alloc_mem_s __user *)arg);
 835                 break;
 836
 837         case MALI_IOC_MEM_FREE:
 838                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_free_mem_s), sizeof(u64)));
 839                 err = mem_free_wrapper(session_data, (_mali_uk_free_mem_s __user *)arg);
 840                 break;
 841
 842         case MALI_IOC_MEM_BIND:
 843                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_bind_mem_s), sizeof(u64)));
 844                 err = mem_bind_wrapper(session_data, (_mali_uk_bind_mem_s __user *)arg);
 845                 break;
 846
 847         case MALI_IOC_MEM_UNBIND:
 848                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_unbind_mem_s), sizeof(u64)));
 849                 err = mem_unbind_wrapper(session_data, (_mali_uk_unbind_mem_s __user *)arg);
 850                 break;
 851
 852         case MALI_IOC_MEM_COW:
 853                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_cow_mem_s), sizeof(u64)));
 854                 err = mem_cow_wrapper(session_data, (_mali_uk_cow_mem_s __user *)arg);
 855                 break;
 856
 857         case MALI_IOC_MEM_COW_MODIFY_RANGE:
 858                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_cow_modify_range_s), sizeof(u64)));
 859                 err = mem_cow_modify_range_wrapper(session_data, (_mali_uk_cow_modify_range_s __user *)arg);
 860                 break;
 861
 862         case MALI_IOC_MEM_RESIZE:
 863                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_mem_resize_s), sizeof(u64)));
 864                 err = mem_resize_mem_wrapper(session_data, (_mali_uk_mem_resize_s __user *)arg);
 865                 break;
 866
 867         case MALI_IOC_MEM_WRITE_SAFE:
 868                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_mem_write_safe_s), sizeof(u64)));
 869                 err = mem_write_safe_wrapper(session_data, (_mali_uk_mem_write_safe_s __user *)arg);
 870                 break;
 871
 872         case MALI_IOC_MEM_QUERY_MMU_PAGE_TABLE_DUMP_SIZE:
 873                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_query_mmu_page_table_dump_size_s), sizeof(u64)));
 874                 err = mem_query_mmu_page_table_dump_size_wrapper(session_data, (_mali_uk_query_mmu_page_table_dump_size_s __user *)arg);
 875                 break;
 876
 877         case MALI_IOC_MEM_DUMP_MMU_PAGE_TABLE:
 878                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_dump_mmu_page_table_s), sizeof(u64)));
 879                 err = mem_dump_mmu_page_table_wrapper(session_data, (_mali_uk_dump_mmu_page_table_s __user *)arg);
 880                 break;
 881
 882         case MALI_IOC_MEM_DMA_BUF_GET_SIZE:
 883 #ifdef CONFIG_DMA_SHARED_BUFFER
 884                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_dma_buf_get_size_s), sizeof(u64)));
 885                 err = mali_dma_buf_get_size(session_data, (_mali_uk_dma_buf_get_size_s __user *)arg);
 886 #else
 887                 MALI_DEBUG_PRINT(2, ("DMA-BUF not supported\n"));
 888                 err = -ENOTTY;
 889 #endif
 890                 break;
 891
 892         case MALI_IOC_PP_START_JOB:
 893                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_pp_start_job_s), sizeof(u64)));
 894                 err = pp_start_job_wrapper(session_data, (_mali_uk_pp_start_job_s __user *)arg);
 895                 break;
 896
 897         case MALI_IOC_PP_AND_GP_START_JOB:
 898                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_pp_and_gp_start_job_s), sizeof(u64)));
 899                 err = pp_and_gp_start_job_wrapper(session_data, (_mali_uk_pp_and_gp_start_job_s __user *)arg);
 900                 break;
 901
 902         case MALI_IOC_PP_NUMBER_OF_CORES_GET:
 903                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_pp_number_of_cores_s), sizeof(u64)));
 904                 err = pp_get_number_of_cores_wrapper(session_data, (_mali_uk_get_pp_number_of_cores_s __user *)arg);
 905                 break;
 906
 907         case MALI_IOC_PP_CORE_VERSION_GET:
 908                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_pp_core_version_s), sizeof(u64)));
 909                 err = pp_get_core_version_wrapper(session_data, (_mali_uk_get_pp_core_version_s __user *)arg);
 910                 break;
 911
 912         case MALI_IOC_PP_DISABLE_WB:
 913                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_pp_disable_wb_s), sizeof(u64)));
 914                 err = pp_disable_wb_wrapper(session_data, (_mali_uk_pp_disable_wb_s __user *)arg);
 915                 break;
 916
 917         case MALI_IOC_GP2_START_JOB:
 918                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_gp_start_job_s), sizeof(u64)));
 919                 err = gp_start_job_wrapper(session_data, (_mali_uk_gp_start_job_s __user *)arg);
 920                 break;
 921
 922         case MALI_IOC_GP2_NUMBER_OF_CORES_GET:
 923                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_gp_number_of_cores_s), sizeof(u64)));
 924                 err = gp_get_number_of_cores_wrapper(session_data, (_mali_uk_get_gp_number_of_cores_s __user *)arg);
 925                 break;
 926
 927         case MALI_IOC_GP2_CORE_VERSION_GET:
 928                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_gp_core_version_s), sizeof(u64)));
 929                 err = gp_get_core_version_wrapper(session_data, (_mali_uk_get_gp_core_version_s __user *)arg);
 930                 break;
 931
 932         case MALI_IOC_GP2_SUSPEND_RESPONSE:
 933                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_gp_suspend_response_s), sizeof(u64)));
 934                 err = gp_suspend_response_wrapper(session_data, (_mali_uk_gp_suspend_response_s __user *)arg);
 935                 break;
 936
 937         case MALI_IOC_VSYNC_EVENT_REPORT:
 938                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_vsync_event_report_s), sizeof(u64)));
 939                 err = vsync_event_report_wrapper(session_data, (_mali_uk_vsync_event_report_s __user *)arg);
 940                 break;
 941
 942         case MALI_IOC_TIMELINE_GET_LATEST_POINT:
 943                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_timeline_get_latest_point_s), sizeof(u64)));
 944                 err = timeline_get_latest_point_wrapper(session_data, (_mali_uk_timeline_get_latest_point_s __user *)arg);
 945                 break;
 946         case MALI_IOC_TIMELINE_WAIT:
 947                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_timeline_wait_s), sizeof(u64)));
 948                 err = timeline_wait_wrapper(session_data, (_mali_uk_timeline_wait_s __user *)arg);
 949                 break;
 950         case MALI_IOC_TIMELINE_CREATE_SYNC_FENCE:
 951                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_timeline_create_sync_fence_s), sizeof(u64)));
 952                 err = timeline_create_sync_fence_wrapper(session_data, (_mali_uk_timeline_create_sync_fence_s __user *)arg);
 953                 break;
 954         case MALI_IOC_SOFT_JOB_START:
 955                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_soft_job_start_s), sizeof(u64)));
 956                 err = soft_job_start_wrapper(session_data, (_mali_uk_soft_job_start_s __user *)arg);
 957                 break;
 958         case MALI_IOC_SOFT_JOB_SIGNAL:
 959                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_soft_job_signal_s), sizeof(u64)));
 960                 err = soft_job_signal_wrapper(session_data, (_mali_uk_soft_job_signal_s __user *)arg);
 961                 break;
 962
 963         default:
 964                 MALI_DEBUG_PRINT(2, ("No handler for ioctl 0x%08X 0x%08lX\n", cmd, arg));
 965                 err = -ENOTTY;
 966         };
 967
 968         return err;
 969 }
 970
 971
 972 module_init(mali_module_init);
 973 module_exit(mali_module_exit);
 974
 975 MODULE_LICENSE(MALI_KERNEL_LINUX_LICENSE);
 976 MODULE_AUTHOR("ARM Ltd.");
 977 MODULE_VERSION(SVN_REV_STRING);