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

   1 /**
   2  * Copyright (C) 2010-2014 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
  18 #include <linux/module.h>   /* kernel module definitions */
  19 #include <linux/fs.h>       /* file system operations */
  20 #include <linux/cdev.h>     /* character device definitions */
  21 #include <linux/mm.h>       /* memory manager definitions */
  22 #include <linux/mali/mali_utgard_ioctl.h>
  23 #include <linux/version.h>
  24 #include <linux/device.h>
  25 #include "mali_kernel_license.h"
  26 #include <linux/platform_device.h>
  27 #include <linux/miscdevice.h>
  28 #include <linux/bug.h>
  29 #include <linux/of.h>
  30
  31 #include <linux/mali/mali_utgard.h>
  32 #include "mali_kernel_common.h"
  33 #include "mali_session.h"
  34 #include "mali_kernel_core.h"
  35 #include "mali_osk.h"
  36 #include "mali_kernel_linux.h"
  37 #include "mali_ukk.h"
  38 #include "mali_ukk_wrappers.h"
  39 #include "mali_kernel_sysfs.h"
  40 #include "mali_pm.h"
  41 #include "mali_kernel_license.h"
  42 #include "mali_memory.h"
  43 #include "mali_memory_dma_buf.h"
  44 #if defined(CONFIG_MALI400_INTERNAL_PROFILING)
  45 #include "mali_profiling_internal.h"
  46 #endif
  47 #if defined(CONFIG_MALI400_PROFILING) && defined(CONFIG_MALI_DVFS)
  48 #include "mali_osk_profiling.h"
  49 #include "mali_dvfs_policy.h"
  50 static int is_first_resume = 1;
  51 /*Store the clk and vol for boot/insmod and mali_resume*/
  52 static struct mali_gpu_clk_item mali_gpu_clk[2];
  53 #endif
  54
  55 /* Streamline support for the Mali driver */
  56 #if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_MALI400_PROFILING)
  57 /* Ask Linux to create the tracepoints */
  58 #define CREATE_TRACE_POINTS
  59 #include "mali_linux_trace.h"
  60
  61 EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_event);
  62 EXPORT_TRACEPOINT_SYMBOL_GPL(mali_hw_counter);
  63 EXPORT_TRACEPOINT_SYMBOL_GPL(mali_sw_counters);
  64 #endif /* CONFIG_TRACEPOINTS */
  65
  66 /* from the __malidrv_build_info.c file that is generated during build */
  67 extern const char *__malidrv_build_info(void);
  68
  69 /* Module parameter to control log level */
  70 int mali_debug_level = 2;
  71 module_param(mali_debug_level, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH); /* rw-rw-r-- */
  72 MODULE_PARM_DESC(mali_debug_level, "Higher number, more dmesg output");
  73
  74 extern int mali_max_job_runtime;
  75 module_param(mali_max_job_runtime, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH);
  76 MODULE_PARM_DESC(mali_max_job_runtime, "Maximum allowed job runtime in msecs.\nJobs will be killed after this no matter what");
  77
  78 extern int mali_l2_max_reads;
  79 module_param(mali_l2_max_reads, int, S_IRUSR | S_IRGRP | S_IROTH);
  80 MODULE_PARM_DESC(mali_l2_max_reads, "Maximum reads for Mali L2 cache");
  81
  82 extern unsigned int mali_dedicated_mem_start;
  83 module_param(mali_dedicated_mem_start, uint, S_IRUSR | S_IRGRP | S_IROTH);
  84 MODULE_PARM_DESC(mali_dedicated_mem_start, "Physical start address of dedicated Mali GPU memory.");
  85
  86 extern unsigned int mali_dedicated_mem_size;
  87 module_param(mali_dedicated_mem_size, uint, S_IRUSR | S_IRGRP | S_IROTH);
  88 MODULE_PARM_DESC(mali_dedicated_mem_size, "Size of dedicated Mali GPU memory.");
  89
  90 extern unsigned int mali_shared_mem_size;
  91 module_param(mali_shared_mem_size, uint, S_IRUSR | S_IRGRP | S_IROTH);
  92 MODULE_PARM_DESC(mali_shared_mem_size, "Size of shared Mali GPU memory.");
  93
  94 #if defined(CONFIG_MALI400_PROFILING)
  95 extern int mali_boot_profiling;
  96 module_param(mali_boot_profiling, int, S_IRUSR | S_IRGRP | S_IROTH);
  97 MODULE_PARM_DESC(mali_boot_profiling, "Start profiling as a part of Mali driver initialization");
  98 #endif
  99
 100 extern int mali_max_pp_cores_group_1;
 101 module_param(mali_max_pp_cores_group_1, int, S_IRUSR | S_IRGRP | S_IROTH);
 102 MODULE_PARM_DESC(mali_max_pp_cores_group_1, "Limit the number of PP cores to use from first PP group.");
 103
 104 extern int mali_max_pp_cores_group_2;
 105 module_param(mali_max_pp_cores_group_2, int, S_IRUSR | S_IRGRP | S_IROTH);
 106 MODULE_PARM_DESC(mali_max_pp_cores_group_2, "Limit the number of PP cores to use from second PP group (Mali-450 only).");
 107
 108 #if defined(CONFIG_MALI_DVFS)
 109 /** the max fps the same as display vsync default 60, can set by module insert parameter */
 110 extern int mali_max_system_fps;
 111 module_param(mali_max_system_fps, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH);
 112 MODULE_PARM_DESC(mali_max_system_fps, "Max system fps the same as display VSYNC.");
 113
 114 /** a lower limit on their desired FPS default 58, can set by module insert parameter*/
 115 extern int mali_desired_fps;
 116 module_param(mali_desired_fps, int, S_IRUSR | S_IWUSR | S_IWGRP | S_IRGRP | S_IROTH);
 117 MODULE_PARM_DESC(mali_desired_fps, "A bit lower than max_system_fps which user desired fps");
 118 #endif
 119
 120 #if MALI_ENABLE_CPU_CYCLES
 121 #include <linux/cpumask.h>
 122 #include <linux/timer.h>
 123 #include <asm/smp.h>
 124 static struct timer_list mali_init_cpu_clock_timers[8];
 125 static u32 mali_cpu_clock_last_value[8] = {0,};
 126 #endif
 127
 128 /* Export symbols from common code: mali_user_settings.c */
 129 #include "mali_user_settings_db.h"
 130 EXPORT_SYMBOL(mali_set_user_setting);
 131 EXPORT_SYMBOL(mali_get_user_setting);
 132
 133 static char mali_dev_name[] = "mali"; /* should be const, but the functions we call requires non-cost */
 134
 135 /* This driver only supports one Mali device, and this variable stores this single platform device */
 136 struct platform_device *mali_platform_device = NULL;
 137
 138 /* This driver only supports one Mali device, and this variable stores the exposed misc device (/dev/mali) */
 139 static struct miscdevice mali_miscdevice = { 0, };
 140
 141 static int mali_miscdevice_register(struct platform_device *pdev);
 142 static void mali_miscdevice_unregister(void);
 143
 144 static int mali_open(struct inode *inode, struct file *filp);
 145 static int mali_release(struct inode *inode, struct file *filp);
 146 #ifdef HAVE_UNLOCKED_IOCTL
 147 static long mali_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
 148 #else
 149 static int mali_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
 150 #endif
 151
 152 static int mali_probe(struct platform_device *pdev);
 153 static int mali_remove(struct platform_device *pdev);
 154
 155 static int mali_driver_suspend_scheduler(struct device *dev);
 156 static int mali_driver_resume_scheduler(struct device *dev);
 157
 158 #ifdef CONFIG_PM_RUNTIME
 159 static int mali_driver_runtime_suspend(struct device *dev);
 160 static int mali_driver_runtime_resume(struct device *dev);
 161 static int mali_driver_runtime_idle(struct device *dev);
 162 #endif
 163
 164 #if defined(MALI_FAKE_PLATFORM_DEVICE)
 165 #if defined(CONFIG_MALI_DT)
 166 extern int mali_platform_device_init(struct platform_device *device);
 167 extern int mali_platform_device_deinit(struct platform_device *device);
 168 #else
 169 extern int mali_platform_device_register(void);
 170 extern int mali_platform_device_unregister(void);
 171 #endif
 172 #endif
 173
 174 /* Linux power management operations provided by the Mali device driver */
 175 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29))
 176 struct pm_ext_ops mali_dev_ext_pm_ops = {
 177         .base =
 178         {
 179                 .suspend = mali_driver_suspend_scheduler,
 180                 .resume = mali_driver_resume_scheduler,
 181                 .freeze = mali_driver_suspend_scheduler,
 182                 .thaw =   mali_driver_resume_scheduler,
 183         },
 184 };
 185 #else
 186 static const struct dev_pm_ops mali_dev_pm_ops = {
 187 #ifdef CONFIG_PM_RUNTIME
 188         .runtime_suspend = mali_driver_runtime_suspend,
 189         .runtime_resume = mali_driver_runtime_resume,
 190         .runtime_idle = mali_driver_runtime_idle,
 191 #endif
 192         .suspend = mali_driver_suspend_scheduler,
 193         .resume = mali_driver_resume_scheduler,
 194         .freeze = mali_driver_suspend_scheduler,
 195         .thaw = mali_driver_resume_scheduler,
 196         .poweroff = mali_driver_suspend_scheduler,
 197 };
 198 #endif
 199
 200 #ifdef CONFIG_MALI_DT
 201 static struct of_device_id base_dt_ids[] = {
 202         {.compatible = "arm,mali-300"},
 203     /*-------------------------------------------------------*/
 204     /* rk_ext : to use dts_for_mali_ko_befor_r5p0-01rel0. */
 205         // {.compatible = "arm,mali-400"},
 206         {.compatible = "arm,mali400"},
 207     /*-------------------------------------------------------*/
 208         {.compatible = "arm,mali-450"},
 209         {.compatible = "arm,mali-utgard"},
 210         {},
 211 };
 212
 213 MODULE_DEVICE_TABLE(of, base_dt_ids);
 214 #endif
 215
 216 /* The Mali device driver struct */
 217 static struct platform_driver mali_platform_driver = {
 218         .probe  = mali_probe,
 219         .remove = mali_remove,
 220 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29))
 221         .pm = &mali_dev_ext_pm_ops,
 222 #endif
 223         .driver =
 224         {
 225                 .name   = MALI_GPU_NAME_UTGARD,
 226                 .owner  = THIS_MODULE,
 227                 .bus = &platform_bus_type,
 228 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 29))
 229                 .pm = &mali_dev_pm_ops,
 230 #endif
 231 #ifdef CONFIG_MALI_DT
 232                 .of_match_table = of_match_ptr(base_dt_ids),
 233 #endif
 234         },
 235 };
 236
 237 /* Linux misc device operations (/dev/mali) */
 238 struct file_operations mali_fops = {
 239         .owner = THIS_MODULE,
 240         .open = mali_open,
 241         .release = mali_release,
 242 #ifdef HAVE_UNLOCKED_IOCTL
 243         .unlocked_ioctl = mali_ioctl,
 244 #else
 245         .ioctl = mali_ioctl,
 246 #endif
 247         .compat_ioctl = mali_ioctl,
 248         .mmap = mali_mmap
 249 };
 250
 251 #if MALI_ENABLE_CPU_CYCLES
 252 void mali_init_cpu_time_counters(int reset, int enable_divide_by_64)
 253 {
 254         /* The CPU assembly reference used is: ARM Architecture Reference Manual ARMv7-AR C.b */
 255         u32 write_value;
 256
 257         /* See B4.1.116 PMCNTENSET, Performance Monitors Count Enable Set register, VMSA */
 258         /* setting p15 c9 c12 1 to 0x8000000f==CPU_CYCLE_ENABLE |EVENT_3_ENABLE|EVENT_2_ENABLE|EVENT_1_ENABLE|EVENT_0_ENABLE */
 259         asm volatile("mcr p15, 0, %0, c9, c12, 1" :: "r"(0x8000000f));
 260
 261
 262         /* See B4.1.117 PMCR, Performance Monitors Control Register. Writing to p15, c9, c12, 0 */
 263         write_value = 1 << 0; /* Bit 0 set. Enable counters */
 264         if (reset) {
 265                 write_value |= 1 << 1; /* Reset event counters */
 266                 write_value |= 1 << 2; /* Reset cycle counter  */
 267         }
 268         if (enable_divide_by_64) {
 269                 write_value |= 1 << 3; /* Enable the Clock divider by 64 */
 270         }
 271         write_value |= 1 << 4; /* Export enable. Not needed */
 272         asm volatile("MCR p15, 0, %0, c9, c12, 0\t\n" :: "r"(write_value));
 273
 274         /* PMOVSR Overflow Flag Status Register - Clear Clock and Event overflows */
 275         asm volatile("MCR p15, 0, %0, c9, c12, 3\t\n" :: "r"(0x8000000f));
 276
 277
 278         /* See B4.1.124 PMUSERENR - setting p15 c9 c14 to 1" */
 279         /* User mode access to the Performance Monitors enabled. */
 280         /* Lets User space read cpu clock cycles */
 281         asm volatile("mcr p15, 0, %0, c9, c14, 0" :: "r"(1));
 282 }
 283
 284 /** A timer function that configures the cycle clock counter on current CPU.
 285  * The function \a mali_init_cpu_time_counters_on_all_cpus sets up this
 286  * function to trigger on all Cpus during module load.
 287  */
 288 static void mali_init_cpu_clock_timer_func(unsigned long data)
 289 {
 290         int reset_counters, enable_divide_clock_counter_by_64;
 291         int current_cpu = raw_smp_processor_id();
 292         unsigned int sample0;
 293         unsigned int sample1;
 294
 295         MALI_IGNORE(data);
 296
 297         reset_counters = 1;
 298         enable_divide_clock_counter_by_64 = 0;
 299         mali_init_cpu_time_counters(reset_counters, enable_divide_clock_counter_by_64);
 300
 301         sample0 = mali_get_cpu_cyclecount();
 302         sample1 = mali_get_cpu_cyclecount();
 303
 304         MALI_DEBUG_PRINT(3, ("Init Cpu %d cycle counter- First two samples: %08x %08x \n", current_cpu, sample0, sample1));
 305 }
 306
 307 /** A timer functions for storing current time on all cpus.
 308  * Used for checking if the clocks have similar values or if they are drifting.
 309  */
 310 static void mali_print_cpu_clock_timer_func(unsigned long data)
 311 {
 312         int current_cpu = raw_smp_processor_id();
 313         unsigned int sample0;
 314
 315         MALI_IGNORE(data);
 316         sample0 = mali_get_cpu_cyclecount();
 317         if (current_cpu < 8) {
 318                 mali_cpu_clock_last_value[current_cpu] = sample0;
 319         }
 320 }
 321
 322 /** Init the performance registers on all CPUs to count clock cycles.
 323  * For init \a print_only should be 0.
 324  * If \a print_only is 1, it will intead print the current clock value of all CPUs.
 325  */
 326 void mali_init_cpu_time_counters_on_all_cpus(int print_only)
 327 {
 328         int i = 0;
 329         int cpu_number;
 330         int jiffies_trigger;
 331         int jiffies_wait;
 332
 333         jiffies_wait = 2;
 334         jiffies_trigger = jiffies + jiffies_wait;
 335
 336         for (i = 0 ; i < 8 ; i++) {
 337                 init_timer(&mali_init_cpu_clock_timers[i]);
 338                 if (print_only) mali_init_cpu_clock_timers[i].function = mali_print_cpu_clock_timer_func;
 339                 else            mali_init_cpu_clock_timers[i].function = mali_init_cpu_clock_timer_func;
 340                 mali_init_cpu_clock_timers[i].expires = jiffies_trigger ;
 341         }
 342         cpu_number = cpumask_first(cpu_online_mask);
 343         for (i = 0 ; i < 8 ; i++) {
 344                 int next_cpu;
 345                 add_timer_on(&mali_init_cpu_clock_timers[i], cpu_number);
 346                 next_cpu = cpumask_next(cpu_number, cpu_online_mask);
 347                 if (next_cpu >= nr_cpu_ids) break;
 348                 cpu_number = next_cpu;
 349         }
 350
 351         while (jiffies_wait) jiffies_wait = schedule_timeout_uninterruptible(jiffies_wait);
 352
 353         for (i = 0 ; i < 8 ; i++) {
 354                 del_timer_sync(&mali_init_cpu_clock_timers[i]);
 355         }
 356
 357         if (print_only) {
 358                 if ((0 == mali_cpu_clock_last_value[2]) && (0 == mali_cpu_clock_last_value[3])) {
 359                         /* Diff can be printed if we want to check if the clocks are in sync
 360                         int diff = mali_cpu_clock_last_value[0] - mali_cpu_clock_last_value[1];*/
 361                         MALI_DEBUG_PRINT(2, ("CPU cycle counters readout all: %08x %08x\n", mali_cpu_clock_last_value[0], mali_cpu_clock_last_value[1]));
 362                 } else {
 363                         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]));
 364                 }
 365         }
 366 }
 367 #endif
 368
 369 /** rk_ext : version of rk_ext on mali_ko, aka. rk_ko_ver. */
 370 #define ROCKCHIP_VERSION    (1)
 371
 372 int mali_module_init(void)
 373 {
 374         int err = 0;
 375
 376         MALI_DEBUG_PRINT(2, ("Inserting Mali v%d device driver. \n", _MALI_API_VERSION));
 377         MALI_DEBUG_PRINT(2, ("Compiled: %s, time: %s.\n", __DATE__, __TIME__));
 378         MALI_DEBUG_PRINT(2, ("Driver revision: %s\n", SVN_REV_STRING));
 379
 380     I("arm_release_ver of this mali_ko is '%s', rk_ko_ver is '%d', built at '%s', on '%s'.",
 381         SVN_REV_STRING,
 382         ROCKCHIP_VERSION,
 383         __TIME__,
 384         __DATE__);
 385
 386 #if MALI_ENABLE_CPU_CYCLES
 387         mali_init_cpu_time_counters_on_all_cpus(0);
 388         MALI_DEBUG_PRINT(2, ("CPU cycle counter setup complete\n"));
 389         /* Printing the current cpu counters */
 390         mali_init_cpu_time_counters_on_all_cpus(1);
 391 #endif
 392
 393         /* Initialize module wide settings */
 394 #ifdef MALI_FAKE_PLATFORM_DEVICE
 395 #ifndef CONFIG_MALI_DT
 396         MALI_DEBUG_PRINT(2, ("mali_module_init() registering device\n"));
 397         err = mali_platform_device_register();
 398         if (0 != err) {
 399                 return err;
 400         }
 401 #endif
 402 #endif
 403
 404         MALI_DEBUG_PRINT(2, ("mali_module_init() registering driver\n"));
 405
 406         err = platform_driver_register(&mali_platform_driver);
 407
 408         if (0 != err) {
 409                 MALI_DEBUG_PRINT(2, ("mali_module_init() Failed to register driver (%d)\n", err));
 410 #ifdef MALI_FAKE_PLATFORM_DEVICE
 411 #ifndef CONFIG_MALI_DT
 412         mali_platform_device_unregister();
 413 #endif
 414 #endif
 415                 mali_platform_device = NULL;
 416                 return err;
 417         }
 418
 419 #if defined(CONFIG_MALI400_INTERNAL_PROFILING)
 420         err = _mali_internal_profiling_init(mali_boot_profiling ? MALI_TRUE : MALI_FALSE);
 421         if (0 != err) {
 422                 /* No biggie if we wheren't able to initialize the profiling */
 423                 MALI_PRINT_ERROR(("Failed to initialize profiling, feature will be unavailable\n"));
 424         }
 425 #endif
 426
 427         /* Tracing the current frequency and voltage from boot/insmod*/
 428 #if defined(CONFIG_MALI400_PROFILING) && defined(CONFIG_MALI_DVFS)
 429         /* Just call mali_get_current_gpu_clk_item(),to record current clk info.*/
 430         mali_get_current_gpu_clk_item(&mali_gpu_clk[0]);
 431         _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 432                                           MALI_PROFILING_EVENT_CHANNEL_GPU |
 433                                           MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 434                                           mali_gpu_clk[0].clock,
 435                                           mali_gpu_clk[0].vol / 1000,
 436                                           0, 0, 0);
 437 #endif
 438
 439         MALI_PRINT(("Mali device driver loaded\n"));
 440
 441         return 0; /* Success */
 442 }
 443
 444 void mali_module_exit(void)
 445 {
 446         MALI_DEBUG_PRINT(2, ("Unloading Mali v%d device driver.\n", _MALI_API_VERSION));
 447
 448         MALI_DEBUG_PRINT(2, ("mali_module_exit() unregistering driver\n"));
 449
 450         platform_driver_unregister(&mali_platform_driver);
 451
 452 #if defined(MALI_FAKE_PLATFORM_DEVICE)
 453 #ifndef CONFIG_MALI_DT
 454         MALI_DEBUG_PRINT(2, ("mali_module_exit() unregistering device\n"));
 455         mali_platform_device_unregister();
 456 #endif
 457 #endif
 458
 459         /* Tracing the current frequency and voltage from rmmod*/
 460         _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 461                                       MALI_PROFILING_EVENT_CHANNEL_GPU |
 462                                       MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 463                                       0,
 464                                       0,
 465                                       0, 0, 0);
 466
 467 #if defined(CONFIG_MALI400_INTERNAL_PROFILING)
 468         _mali_internal_profiling_term();
 469 #endif
 470
 471         MALI_PRINT(("Mali device driver unloaded\n"));
 472 }
 473
 474 static int mali_probe(struct platform_device *pdev)
 475 {
 476         int err;
 477
 478         MALI_DEBUG_PRINT(2, ("mali_probe(): Called for platform device %s\n", pdev->name));
 479
 480         if (NULL != mali_platform_device) {
 481                 /* Already connected to a device, return error */
 482                 MALI_PRINT_ERROR(("mali_probe(): The Mali driver is already connected with a Mali device."));
 483                 return -EEXIST;
 484         }
 485
 486         mali_platform_device = pdev;
 487
 488         dev_info(&pdev->dev, "mali_platform_device->num_resources = %d\n",
 489                 mali_platform_device->num_resources);
 490
 491         {
 492                 int i = 0;
 493
 494                 for(i = 0; i < mali_platform_device->num_resources; i++)
 495                         dev_info(&pdev->dev, "mali_platform_device->resource[%d].start = 0x%08x\n",
 496                                 i, mali_platform_device->resource[i].start);
 497         }
 498
 499 #ifdef CONFIG_MALI_DT
 500         /* If we use DT to initialize our DDK, we have to prepare somethings. */
 501         err = mali_platform_device_init(mali_platform_device);
 502         if (0 != err) {
 503                 MALI_PRINT_ERROR(("mali_probe(): Failed to initialize platform device."));
 504                 return -EFAULT;
 505         }
 506 #endif
 507
 508         if (_MALI_OSK_ERR_OK == _mali_osk_wq_init()) {
 509                 /* Initialize the Mali GPU HW specified by pdev */
 510                 if (_MALI_OSK_ERR_OK == mali_initialize_subsystems()) {
 511                         /* Register a misc device (so we are accessible from user space) */
 512                         err = mali_miscdevice_register(pdev);
 513                         if (0 == err) {
 514                                 /* Setup sysfs entries */
 515                                 err = mali_sysfs_register(mali_dev_name);
 516
 517                                 if (0 == err) {
 518                                         MALI_DEBUG_PRINT(2, ("mali_probe(): Successfully initialized driver for platform device %s\n", pdev->name));
 519
 520                                         return 0;
 521                                 } else {
 522                                         MALI_PRINT_ERROR(("mali_probe(): failed to register sysfs entries"));
 523                                 }
 524                                 mali_miscdevice_unregister();
 525                         } else {
 526                                 MALI_PRINT_ERROR(("mali_probe(): failed to register Mali misc device."));
 527                         }
 528                         mali_terminate_subsystems();
 529                 } else {
 530                         MALI_PRINT_ERROR(("mali_probe(): Failed to initialize Mali device driver."));
 531                 }
 532                 _mali_osk_wq_term();
 533         }
 534
 535         mali_platform_device = NULL;
 536         return -EFAULT;
 537 }
 538
 539 static int mali_remove(struct platform_device *pdev)
 540 {
 541         MALI_DEBUG_PRINT(2, ("mali_remove() called for platform device %s\n", pdev->name));
 542         mali_sysfs_unregister();
 543         mali_miscdevice_unregister();
 544         mali_terminate_subsystems();
 545         _mali_osk_wq_term();
 546 #ifdef CONFIG_MALI_DT
 547         mali_platform_device_deinit(mali_platform_device);
 548 #endif
 549         mali_platform_device = NULL;
 550         return 0;
 551 }
 552
 553 static int mali_miscdevice_register(struct platform_device *pdev)
 554 {
 555         int err;
 556
 557         mali_miscdevice.minor = MISC_DYNAMIC_MINOR;
 558         mali_miscdevice.name = mali_dev_name;
 559         mali_miscdevice.fops = &mali_fops;
 560         mali_miscdevice.parent = get_device(&pdev->dev);
 561
 562         err = misc_register(&mali_miscdevice);
 563         if (0 != err) {
 564                 MALI_PRINT_ERROR(("Failed to register misc device, misc_register() returned %d\n", err));
 565         }
 566
 567         return err;
 568 }
 569
 570 static void mali_miscdevice_unregister(void)
 571 {
 572         misc_deregister(&mali_miscdevice);
 573 }
 574
 575 static int mali_driver_suspend_scheduler(struct device *dev)
 576 {
 577         mali_pm_os_suspend(MALI_TRUE);
 578         /* Tracing the frequency and voltage after mali is suspended */
 579         _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 580                                       MALI_PROFILING_EVENT_CHANNEL_GPU |
 581                                       MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 582                                       0,
 583                                       0,
 584                                       0, 0, 0);
 585         return 0;
 586 }
 587
 588 static int mali_driver_resume_scheduler(struct device *dev)
 589 {
 590         /* Tracing the frequency and voltage after mali is resumed */
 591 #if defined(CONFIG_MALI400_PROFILING) && defined(CONFIG_MALI_DVFS)
 592         /* Just call mali_get_current_gpu_clk_item() once,to record current clk info.*/
 593         if (is_first_resume == 1) {
 594                 mali_get_current_gpu_clk_item(&mali_gpu_clk[1]);
 595                 is_first_resume = 0;
 596         }
 597         _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 598                                       MALI_PROFILING_EVENT_CHANNEL_GPU |
 599                                       MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 600                                       mali_gpu_clk[1].clock,
 601                                       mali_gpu_clk[1].vol / 1000,
 602                                       0, 0, 0);
 603 #endif
 604         mali_pm_os_resume();
 605         return 0;
 606 }
 607
 608 #ifdef CONFIG_PM_RUNTIME
 609 static int mali_driver_runtime_suspend(struct device *dev)
 610 {
 611         if (MALI_TRUE == mali_pm_runtime_suspend()) {
 612                 /* Tracing the frequency and voltage after mali is suspended */
 613                 _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 614                                               MALI_PROFILING_EVENT_CHANNEL_GPU |
 615                                               MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 616                                               0,
 617                                               0,
 618                                               0, 0, 0);
 619
 620                 return 0;
 621         } else {
 622                 return -EBUSY;
 623         }
 624 }
 625
 626 static int mali_driver_runtime_resume(struct device *dev)
 627 {
 628         /* Tracing the frequency and voltage after mali is resumed */
 629 #if defined(CONFIG_MALI400_PROFILING) && defined(CONFIG_MALI_DVFS)
 630         /* Just call mali_get_current_gpu_clk_item() once,to record current clk info.*/
 631         if (is_first_resume == 1) {
 632                 mali_get_current_gpu_clk_item(&mali_gpu_clk[1]);
 633                 is_first_resume = 0;
 634         }
 635         _mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
 636                                       MALI_PROFILING_EVENT_CHANNEL_GPU |
 637                                       MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
 638                                       mali_gpu_clk[1].clock,
 639                                       mali_gpu_clk[1].vol / 1000,
 640                                       0, 0, 0);
 641 #endif
 642
 643         mali_pm_runtime_resume();
 644         return 0;
 645 }
 646
 647 static int mali_driver_runtime_idle(struct device *dev)
 648 {
 649         /* Nothing to do */
 650         return 0;
 651 }
 652 #endif
 653
 654 static int mali_open(struct inode *inode, struct file *filp)
 655 {
 656         struct mali_session_data *session_data;
 657         _mali_osk_errcode_t err;
 658
 659         /* input validation */
 660         if (mali_miscdevice.minor != iminor(inode)) {
 661                 MALI_PRINT_ERROR(("mali_open() Minor does not match\n"));
 662                 return -ENODEV;
 663         }
 664
 665         /* allocated struct to track this session */
 666         err = _mali_ukk_open((void **)&session_data);
 667         if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
 668
 669         /* initialize file pointer */
 670         filp->f_pos = 0;
 671
 672         /* link in our session data */
 673         filp->private_data = (void *)session_data;
 674
 675         return 0;
 676 }
 677
 678 static int mali_release(struct inode *inode, struct file *filp)
 679 {
 680         _mali_osk_errcode_t err;
 681
 682         /* input validation */
 683         if (mali_miscdevice.minor != iminor(inode)) {
 684                 MALI_PRINT_ERROR(("mali_release() Minor does not match\n"));
 685                 return -ENODEV;
 686         }
 687
 688         err = _mali_ukk_close((void **)&filp->private_data);
 689         if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
 690
 691         return 0;
 692 }
 693
 694 int map_errcode(_mali_osk_errcode_t err)
 695 {
 696         switch (err) {
 697         case _MALI_OSK_ERR_OK :
 698                 return 0;
 699         case _MALI_OSK_ERR_FAULT:
 700                 return -EFAULT;
 701         case _MALI_OSK_ERR_INVALID_FUNC:
 702                 return -ENOTTY;
 703         case _MALI_OSK_ERR_INVALID_ARGS:
 704                 return -EINVAL;
 705         case _MALI_OSK_ERR_NOMEM:
 706                 return -ENOMEM;
 707         case _MALI_OSK_ERR_TIMEOUT:
 708                 return -ETIMEDOUT;
 709         case _MALI_OSK_ERR_RESTARTSYSCALL:
 710                 return -ERESTARTSYS;
 711         case _MALI_OSK_ERR_ITEM_NOT_FOUND:
 712                 return -ENOENT;
 713         default:
 714                 return -EFAULT;
 715         }
 716 }
 717
 718 #ifdef HAVE_UNLOCKED_IOCTL
 719 static long mali_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 720 #else
 721 static int mali_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
 722 #endif
 723 {
 724         int err;
 725         struct mali_session_data *session_data;
 726
 727 #ifndef HAVE_UNLOCKED_IOCTL
 728         /* inode not used */
 729         (void)inode;
 730 #endif
 731
 732         MALI_DEBUG_PRINT(7, ("Ioctl received 0x%08X 0x%08lX\n", cmd, arg));
 733
 734         session_data = (struct mali_session_data *)filp->private_data;
 735         if (NULL == session_data) {
 736                 MALI_DEBUG_PRINT(7, ("filp->private_data was NULL\n"));
 737                 return -ENOTTY;
 738         }
 739
 740         if (NULL == (void *)arg) {
 741                 MALI_DEBUG_PRINT(7, ("arg was NULL\n"));
 742                 return -ENOTTY;
 743         }
 744
 745         switch (cmd) {
 746         case MALI_IOC_WAIT_FOR_NOTIFICATION:
 747                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_wait_for_notification_s), sizeof(u64)));
 748                 err = wait_for_notification_wrapper(session_data, (_mali_uk_wait_for_notification_s __user *)arg);
 749                 break;
 750
 751         case MALI_IOC_GET_API_VERSION_V2:
 752                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_api_version_v2_s), sizeof(u64)));
 753                 err = get_api_version_v2_wrapper(session_data, (_mali_uk_get_api_version_v2_s __user *)arg);
 754                 break;
 755
 756         case MALI_IOC_GET_API_VERSION:
 757                 err = get_api_version_wrapper(session_data, (_mali_uk_get_api_version_s __user *)arg);
 758                 break;
 759
 760         case MALI_IOC_POST_NOTIFICATION:
 761                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_post_notification_s), sizeof(u64)));
 762                 err = post_notification_wrapper(session_data, (_mali_uk_post_notification_s __user *)arg);
 763                 break;
 764
 765         case MALI_IOC_GET_MALI_VERSION_IN_RK30:
 766                 err = get_mali_version_in_rk30_wrapper(session_data, (_mali_uk_get_mali_version_in_rk30_s __user *)arg);
 767                 break;
 768
 769         case MALI_IOC_GET_USER_SETTINGS:
 770                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_user_settings_s), sizeof(u64)));
 771                 err = get_user_settings_wrapper(session_data, (_mali_uk_get_user_settings_s __user *)arg);
 772                 break;
 773
 774         case MALI_IOC_REQUEST_HIGH_PRIORITY:
 775                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_request_high_priority_s), sizeof(u64)));
 776                 err = request_high_priority_wrapper(session_data, (_mali_uk_request_high_priority_s __user *)arg);
 777                 break;
 778
 779 #if defined(CONFIG_MALI400_PROFILING)
 780         case MALI_IOC_PROFILING_ADD_EVENT:
 781                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_profiling_add_event_s), sizeof(u64)));
 782                 err = profiling_add_event_wrapper(session_data, (_mali_uk_profiling_add_event_s __user *)arg);
 783                 break;
 784
 785         case MALI_IOC_PROFILING_REPORT_SW_COUNTERS:
 786                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_sw_counters_report_s), sizeof(u64)));
 787                 err = profiling_report_sw_counters_wrapper(session_data, (_mali_uk_sw_counters_report_s __user *)arg);
 788                 break;
 789
 790
 791         case MALI_IOC_PROFILING_MEMORY_USAGE_GET:
 792                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_profiling_memory_usage_get_s), sizeof(u64)));
 793                 err = profiling_memory_usage_get_wrapper(session_data, (_mali_uk_profiling_memory_usage_get_s __user *)arg);
 794                 break;
 795
 796 #else
 797
 798         case MALI_IOC_PROFILING_ADD_EVENT:          /* FALL-THROUGH */
 799         case MALI_IOC_PROFILING_REPORT_SW_COUNTERS: /* FALL-THROUGH */
 800         case MALI_IOC_PROFILING_MEMORY_USAGE_GET:   /* FALL-THROUGH */
 801                 MALI_DEBUG_PRINT(2, ("Profiling not supported\n"));
 802                 err = -ENOTTY;
 803                 break;
 804
 805 #endif
 806
 807         case MALI_IOC_MEM_WRITE_SAFE:
 808                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_mem_write_safe_s), sizeof(u64)));
 809                 err = mem_write_safe_wrapper(session_data, (_mali_uk_mem_write_safe_s __user *)arg);
 810                 break;
 811
 812         case MALI_IOC_MEM_MAP_EXT:
 813                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_map_external_mem_s), sizeof(u64)));
 814                 err = mem_map_ext_wrapper(session_data, (_mali_uk_map_external_mem_s __user *)arg);
 815                 break;
 816
 817         case MALI_IOC_MEM_UNMAP_EXT:
 818                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_unmap_external_mem_s), sizeof(u64)));
 819                 err = mem_unmap_ext_wrapper(session_data, (_mali_uk_unmap_external_mem_s __user *)arg);
 820                 break;
 821
 822         case MALI_IOC_MEM_QUERY_MMU_PAGE_TABLE_DUMP_SIZE:
 823                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_query_mmu_page_table_dump_size_s), sizeof(u64)));
 824                 err = mem_query_mmu_page_table_dump_size_wrapper(session_data, (_mali_uk_query_mmu_page_table_dump_size_s __user *)arg);
 825                 break;
 826
 827         case MALI_IOC_MEM_DUMP_MMU_PAGE_TABLE:
 828                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_dump_mmu_page_table_s), sizeof(u64)));
 829                 err = mem_dump_mmu_page_table_wrapper(session_data, (_mali_uk_dump_mmu_page_table_s __user *)arg);
 830                 break;
 831
 832 #if defined(CONFIG_MALI400_UMP)
 833
 834         case MALI_IOC_MEM_ATTACH_UMP:
 835                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_attach_ump_mem_s), sizeof(u64)));
 836                 err = mem_attach_ump_wrapper(session_data, (_mali_uk_attach_ump_mem_s __user *)arg);
 837                 break;
 838
 839         case MALI_IOC_MEM_RELEASE_UMP:
 840                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_release_ump_mem_s), sizeof(u64)));
 841                 err = mem_release_ump_wrapper(session_data, (_mali_uk_release_ump_mem_s __user *)arg);
 842                 break;
 843
 844 #else
 845
 846         case MALI_IOC_MEM_ATTACH_UMP:
 847         case MALI_IOC_MEM_RELEASE_UMP: /* FALL-THROUGH */
 848                 MALI_DEBUG_PRINT(2, ("UMP not supported\n"));
 849                 err = -ENOTTY;
 850                 break;
 851 #endif
 852
 853 #ifdef CONFIG_DMA_SHARED_BUFFER
 854         case MALI_IOC_MEM_ATTACH_DMA_BUF:
 855                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_attach_dma_buf_s), sizeof(u64)));
 856                 err = mali_attach_dma_buf(session_data, (_mali_uk_attach_dma_buf_s __user *)arg);
 857                 break;
 858
 859         case MALI_IOC_MEM_RELEASE_DMA_BUF:
 860                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_release_dma_buf_s), sizeof(u64)));
 861                 err = mali_release_dma_buf(session_data, (_mali_uk_release_dma_buf_s __user *)arg);
 862                 break;
 863
 864         case MALI_IOC_MEM_DMA_BUF_GET_SIZE:
 865                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_dma_buf_get_size_s), sizeof(u64)));
 866                 err = mali_dma_buf_get_size(session_data, (_mali_uk_dma_buf_get_size_s __user *)arg);
 867                 break;
 868 #else
 869
 870         case MALI_IOC_MEM_ATTACH_DMA_BUF:   /* FALL-THROUGH */
 871         case MALI_IOC_MEM_RELEASE_DMA_BUF:  /* FALL-THROUGH */
 872         case MALI_IOC_MEM_DMA_BUF_GET_SIZE: /* FALL-THROUGH */
 873                 MALI_DEBUG_PRINT(2, ("DMA-BUF not supported\n"));
 874                 err = -ENOTTY;
 875                 break;
 876 #endif
 877
 878         case MALI_IOC_PP_START_JOB:
 879                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_pp_start_job_s), sizeof(u64)));
 880                 err = pp_start_job_wrapper(session_data, (_mali_uk_pp_start_job_s __user *)arg);
 881                 break;
 882
 883         case MALI_IOC_PP_AND_GP_START_JOB:
 884                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_pp_and_gp_start_job_s), sizeof(u64)));
 885                 err = pp_and_gp_start_job_wrapper(session_data, (_mali_uk_pp_and_gp_start_job_s __user *)arg);
 886                 break;
 887
 888         case MALI_IOC_PP_NUMBER_OF_CORES_GET:
 889                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_pp_number_of_cores_s), sizeof(u64)));
 890                 err = pp_get_number_of_cores_wrapper(session_data, (_mali_uk_get_pp_number_of_cores_s __user *)arg);
 891                 break;
 892
 893         case MALI_IOC_PP_CORE_VERSION_GET:
 894                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_pp_core_version_s), sizeof(u64)));
 895                 err = pp_get_core_version_wrapper(session_data, (_mali_uk_get_pp_core_version_s __user *)arg);
 896                 break;
 897
 898         case MALI_IOC_PP_DISABLE_WB:
 899                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_pp_disable_wb_s), sizeof(u64)));
 900                 err = pp_disable_wb_wrapper(session_data, (_mali_uk_pp_disable_wb_s __user *)arg);
 901                 break;
 902
 903         case MALI_IOC_GP2_START_JOB:
 904                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_gp_start_job_s), sizeof(u64)));
 905                 err = gp_start_job_wrapper(session_data, (_mali_uk_gp_start_job_s __user *)arg);
 906                 break;
 907
 908         case MALI_IOC_GP2_NUMBER_OF_CORES_GET:
 909                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_gp_number_of_cores_s), sizeof(u64)));
 910                 err = gp_get_number_of_cores_wrapper(session_data, (_mali_uk_get_gp_number_of_cores_s __user *)arg);
 911                 break;
 912
 913         case MALI_IOC_GP2_CORE_VERSION_GET:
 914                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_get_gp_core_version_s), sizeof(u64)));
 915                 err = gp_get_core_version_wrapper(session_data, (_mali_uk_get_gp_core_version_s __user *)arg);
 916                 break;
 917
 918         case MALI_IOC_GP2_SUSPEND_RESPONSE:
 919                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_gp_suspend_response_s), sizeof(u64)));
 920                 err = gp_suspend_response_wrapper(session_data, (_mali_uk_gp_suspend_response_s __user *)arg);
 921                 break;
 922
 923         case MALI_IOC_VSYNC_EVENT_REPORT:
 924                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_vsync_event_report_s), sizeof(u64)));
 925                 err = vsync_event_report_wrapper(session_data, (_mali_uk_vsync_event_report_s __user *)arg);
 926                 break;
 927
 928         case MALI_IOC_TIMELINE_GET_LATEST_POINT:
 929                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_timeline_get_latest_point_s), sizeof(u64)));
 930                 err = timeline_get_latest_point_wrapper(session_data, (_mali_uk_timeline_get_latest_point_s __user *)arg);
 931                 break;
 932         case MALI_IOC_TIMELINE_WAIT:
 933                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_timeline_wait_s), sizeof(u64)));
 934                 err = timeline_wait_wrapper(session_data, (_mali_uk_timeline_wait_s __user *)arg);
 935                 break;
 936         case MALI_IOC_TIMELINE_CREATE_SYNC_FENCE:
 937                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_timeline_create_sync_fence_s), sizeof(u64)));
 938                 err = timeline_create_sync_fence_wrapper(session_data, (_mali_uk_timeline_create_sync_fence_s __user *)arg);
 939                 break;
 940         case MALI_IOC_SOFT_JOB_START:
 941                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_soft_job_start_s), sizeof(u64)));
 942                 err = soft_job_start_wrapper(session_data, (_mali_uk_soft_job_start_s __user *)arg);
 943                 break;
 944         case MALI_IOC_SOFT_JOB_SIGNAL:
 945                 BUILD_BUG_ON(!IS_ALIGNED(sizeof(_mali_uk_soft_job_signal_s), sizeof(u64)));
 946                 err = soft_job_signal_wrapper(session_data, (_mali_uk_soft_job_signal_s __user *)arg);
 947                 break;
 948
 949         default:
 950                 MALI_DEBUG_PRINT(2, ("No handler for ioctl 0x%08X 0x%08lX\n", cmd, arg));
 951                 err = -ENOTTY;
 952         };
 953
 954         return err;
 955 }
 956
 957
 958 module_init(mali_module_init);
 959 module_exit(mali_module_exit);
 960
 961 MODULE_LICENSE(MALI_KERNEL_LINUX_LICENSE);
 962 MODULE_AUTHOR("ARM Ltd.");
 963 MODULE_VERSION(SVN_REV_STRING);