drivers/misc/mediatek/gpu/mt8127/mali/mali/common/mali_osk_types.h

   1 /*
   2  * This confidential and proprietary software may be used only as
   3  * authorised by a licensing agreement from ARM Limited
   4  * (C) COPYRIGHT 2008-2013 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 mali_osk_types.h
  13  * Defines types of the OS abstraction layer for the kernel device driver (OSK)
  14  */
  15
  16 #ifndef __MALI_OSK_TYPES_H__
  17 #define __MALI_OSK_TYPES_H__
  18
  19 #ifdef __cplusplus
  20 extern "C" {
  21 #endif
  22
  23 /**
  24  * @addtogroup uddapi Unified Device Driver (UDD) APIs
  25  *
  26  * @{
  27  */
  28
  29 /**
  30  * @addtogroup oskapi UDD OS Abstraction for Kernel-side (OSK) APIs
  31  *
  32  * @{
  33  */
  34
  35 /** @defgroup _mali_osk_miscellaneous OSK Miscellaneous functions, constants and types
  36  * @{ */
  37
  38 /* Define integer types used by OSK. Note: these currently clash with Linux so we only define them if not defined already */
  39 #ifndef __KERNEL__
  40 typedef unsigned char      u8;
  41 typedef signed char        s8;
  42 typedef unsigned short     u16;
  43 typedef signed short       s16;
  44 typedef unsigned int       u32;
  45 typedef signed int         s32;
  46 typedef unsigned long long u64;
  47 #define BITS_PER_LONG (sizeof(long)*8)
  48 #else
  49 /* Ensure Linux types u32, etc. are defined */
  50 #include <linux/types.h>
  51 #endif
  52
  53 /** @brief Mali Boolean type which uses MALI_TRUE and MALI_FALSE
  54   */
  55 typedef unsigned long mali_bool;
  56
  57 #ifndef MALI_TRUE
  58 #define MALI_TRUE ((mali_bool)1)
  59 #endif
  60
  61 #ifndef MALI_FALSE
  62 #define MALI_FALSE ((mali_bool)0)
  63 #endif
  64
  65 #define MALI_HW_CORE_NO_COUNTER     ((u32)-1)
  66
  67 /**
  68  * @brief OSK Error codes
  69  *
  70  * Each OS may use its own set of error codes, and may require that the
  71  * User/Kernel interface take certain error code. This means that the common
  72  * error codes need to be sufficiently rich to pass the correct error code
  73  * thorugh from the OSK to U/K layer, across all OSs.
  74  *
  75  * The result is that some error codes will appear redundant on some OSs.
  76  * Under all OSs, the OSK layer must translate native OS error codes to
  77  * _mali_osk_errcode_t codes. Similarly, the U/K layer must translate from
  78  * _mali_osk_errcode_t codes to native OS error codes.
  79  */
  80 typedef enum {
  81         _MALI_OSK_ERR_OK = 0, /**< Success. */
  82         _MALI_OSK_ERR_FAULT = -1, /**< General non-success */
  83         _MALI_OSK_ERR_INVALID_FUNC = -2, /**< Invalid function requested through User/Kernel interface (e.g. bad IOCTL number) */
  84         _MALI_OSK_ERR_INVALID_ARGS = -3, /**< Invalid arguments passed through User/Kernel interface */
  85         _MALI_OSK_ERR_NOMEM = -4, /**< Insufficient memory */
  86         _MALI_OSK_ERR_TIMEOUT = -5, /**< Timeout occurred */
  87         _MALI_OSK_ERR_RESTARTSYSCALL = -6, /**< Special: On certain OSs, must report when an interruptable mutex is interrupted. Ignore otherwise. */
  88         _MALI_OSK_ERR_ITEM_NOT_FOUND = -7, /**< Table Lookup failed */
  89         _MALI_OSK_ERR_BUSY = -8, /**< Device/operation is busy. Try again later */
  90         _MALI_OSK_ERR_UNSUPPORTED = -9, /**< Optional part of the interface used, and is unsupported */
  91 } _mali_osk_errcode_t;
  92
  93 /** @} */ /* end group _mali_osk_miscellaneous */
  94
  95 /** @defgroup _mali_osk_wq OSK work queues
  96  * @{ */
  97
  98 /** @brief Private type for work objects */
  99 typedef struct _mali_osk_wq_work_s _mali_osk_wq_work_t;
 100 typedef struct _mali_osk_wq_delayed_work_s _mali_osk_wq_delayed_work_t;
 101
 102 /** @brief Work queue handler function
 103  *
 104  * This function type is called when the work is scheduled by the work queue,
 105  * e.g. as an IRQ bottom-half handler.
 106  *
 107  * Refer to \ref _mali_osk_wq_schedule_work() for more information on the
 108  * work-queue and work handlers.
 109  *
 110  * @param arg resource-specific data
 111  */
 112 typedef void (*_mali_osk_wq_work_handler_t)( void * arg );
 113
 114 /* @} */ /* end group _mali_osk_wq */
 115
 116 /** @defgroup _mali_osk_irq OSK IRQ handling
 117  * @{ */
 118
 119 /** @brief Private type for IRQ handling objects */
 120 typedef struct _mali_osk_irq_t_struct _mali_osk_irq_t;
 121
 122 /** @brief Optional function to trigger an irq from a resource
 123  *
 124  * This function is implemented by the common layer to allow probing of a resource's IRQ.
 125  * @param arg resource-specific data */
 126 typedef void  (*_mali_osk_irq_trigger_t)( void * arg );
 127
 128 /** @brief Optional function to acknowledge an irq from a resource
 129  *
 130  * This function is implemented by the common layer to allow probing of a resource's IRQ.
 131  * @param arg resource-specific data
 132  * @return _MALI_OSK_ERR_OK if the IRQ was successful, or a suitable _mali_osk_errcode_t on failure. */
 133 typedef _mali_osk_errcode_t (*_mali_osk_irq_ack_t)( void * arg );
 134
 135 /** @brief IRQ 'upper-half' handler callback.
 136  *
 137  * This function is implemented by the common layer to do the initial handling of a
 138  * resource's IRQ. This maps on to the concept of an ISR that does the minimum
 139  * work necessary before handing off to an IST.
 140  *
 141  * The communication of the resource-specific data from the ISR to the IST is
 142  * handled by the OSK implementation.
 143  *
 144  * On most systems, the IRQ upper-half handler executes in IRQ context.
 145  * Therefore, the system may have restrictions about what can be done in this
 146  * context
 147  *
 148  * If an IRQ upper-half handler requires more work to be done than can be
 149  * acheived in an IRQ context, then it may defer the work with
 150  * _mali_osk_wq_schedule_work(). Refer to \ref _mali_osk_wq_create_work() for
 151  * more information.
 152  *
 153  * @param arg resource-specific data
 154  * @return _MALI_OSK_ERR_OK if the IRQ was correctly handled, or a suitable
 155  * _mali_osk_errcode_t otherwise.
 156  */
 157 typedef _mali_osk_errcode_t  (*_mali_osk_irq_uhandler_t)( void * arg );
 158
 159
 160 /** @} */ /* end group _mali_osk_irq */
 161
 162
 163 /** @defgroup _mali_osk_atomic OSK Atomic counters
 164  * @{ */
 165
 166 /** @brief Public type of atomic counters
 167  *
 168  * This is public for allocation on stack. On systems that support it, this is just a single 32-bit value.
 169  * On others, it could be encapsulating an object stored elsewhere.
 170  *
 171  * Regardless of implementation, the \ref _mali_osk_atomic functions \b must be used
 172  * for all accesses to the variable's value, even if atomicity is not required.
 173  * Do not access u.val or u.obj directly.
 174  */
 175 typedef struct {
 176         union {
 177                 u32 val;
 178                 void *obj;
 179         } u;
 180 } _mali_osk_atomic_t;
 181 /** @} */ /* end group _mali_osk_atomic */
 182
 183
 184 /** @defgroup _mali_osk_lock OSK Mutual Exclusion Locks
 185  * @{ */
 186
 187
 188 /** @brief OSK Mutual Exclusion Lock ordered list
 189  *
 190  * This lists the various types of locks in the system and is used to check
 191  * that locks are taken in the correct order.
 192  *
 193  * - Holding more than one lock of the same order at the same time is not
 194  *   allowed.
 195  * - Taking a lock of a lower order than the highest-order lock currently held
 196  *   is not allowed.
 197  *
 198  */
 199 typedef enum {
 200         /*  ||    Locks    ||  */
 201         /*  ||   must be   ||  */
 202         /* _||_  taken in _||_ */
 203         /* \  /    this   \  / */
 204         /*  \/    order!   \/  */
 205
 206         _MALI_OSK_LOCK_ORDER_FIRST = 0,
 207
 208         _MALI_OSK_LOCK_ORDER_SESSIONS,
 209         _MALI_OSK_LOCK_ORDER_MEM_SESSION,
 210         _MALI_OSK_LOCK_ORDER_MEM_INFO,
 211         _MALI_OSK_LOCK_ORDER_MEM_PT_CACHE,
 212         _MALI_OSK_LOCK_ORDER_DESCRIPTOR_MAP,
 213         _MALI_OSK_LOCK_ORDER_GROUP_VIRTUAL,
 214         _MALI_OSK_LOCK_ORDER_GROUP,
 215         _MALI_OSK_LOCK_ORDER_TIMELINE_SYSTEM,
 216         _MALI_OSK_LOCK_ORDER_SCHEDULER,
 217         _MALI_OSK_LOCK_ORDER_SCHEDULER_DEFERRED,
 218         _MALI_OSK_LOCK_ORDER_PM_CORE_STATE,
 219         _MALI_OSK_LOCK_ORDER_L2_COMMAND,
 220         _MALI_OSK_LOCK_ORDER_DMA_COMMAND,
 221         _MALI_OSK_LOCK_ORDER_PROFILING,
 222         _MALI_OSK_LOCK_ORDER_L2_COUNTER,
 223         _MALI_OSK_LOCK_ORDER_UTILIZATION,
 224         _MALI_OSK_LOCK_ORDER_PM_EXECUTE,
 225         _MALI_OSK_LOCK_ORDER_SESSION_PENDING_JOBS,
 226         _MALI_OSK_LOCK_ORDER_PM_DOMAIN,
 227         _MALI_OSK_LOCK_ORDER_PMU,
 228
 229         _MALI_OSK_LOCK_ORDER_LAST,
 230 } _mali_osk_lock_order_t;
 231
 232
 233 /** @brief OSK Mutual Exclusion Lock flags type
 234  *
 235  * - Any lock can use the order parameter.
 236  */
 237 typedef enum {
 238         _MALI_OSK_LOCKFLAG_UNORDERED        = 0x1, /**< Indicate that the order of this lock should not be checked */
 239         _MALI_OSK_LOCKFLAG_ORDERED          = 0x2,
 240         /** @enum _mali_osk_lock_flags_t
 241          *
 242          * Flags from 0x10000--0x80000000 are RESERVED for User-mode */
 243
 244 } _mali_osk_lock_flags_t;
 245
 246 /** @brief Mutual Exclusion Lock Mode Optimization hint
 247  *
 248  * The lock mode is used to implement the read/write locking of locks when we call
 249  * functions _mali_osk_mutex_rw_init/wait/signal/term/. In this case, the RO mode can
 250  * be used to allow multiple concurrent readers, but no writers. The RW mode is used for
 251  * writers, and so will wait for all readers to release the lock (if any present).
 252  * Further readers and writers will wait until the writer releases the lock.
 253  *
 254  * The mode is purely an optimization hint: for example, it is permissible for
 255  * all locks to behave in RW mode, regardless of that supplied.
 256  *
 257  * It is an error to attempt to use locks in anything other that RW mode when
 258  * call functions _mali_osk_mutex_rw_wait/signal().
 259  *
 260  */
 261 typedef enum {
 262         _MALI_OSK_LOCKMODE_UNDEF = -1,  /**< Undefined lock mode. For internal use only */
 263         _MALI_OSK_LOCKMODE_RW    = 0x0, /**< Read-write mode, default. All readers and writers are mutually-exclusive */
 264         _MALI_OSK_LOCKMODE_RO,          /**< Read-only mode, to support multiple concurrent readers, but mutual exclusion in the presence of writers. */
 265         /** @enum _mali_osk_lock_mode_t
 266          *
 267          * Lock modes 0x40--0x7F are RESERVED for User-mode */
 268 } _mali_osk_lock_mode_t;
 269
 270 /** @brief Private types for Mutual Exclusion lock objects */
 271 typedef struct _mali_osk_lock_debug_s _mali_osk_lock_debug_t;
 272 typedef struct _mali_osk_spinlock_s _mali_osk_spinlock_t;
 273 typedef struct _mali_osk_spinlock_irq_s _mali_osk_spinlock_irq_t;
 274 typedef struct _mali_osk_mutex_s _mali_osk_mutex_t;
 275 typedef struct _mali_osk_mutex_rw_s _mali_osk_mutex_rw_t;
 276
 277 /** @} */ /* end group _mali_osk_lock */
 278
 279 /** @defgroup _mali_osk_low_level_memory OSK Low-level Memory Operations
 280  * @{ */
 281
 282 /**
 283  * @brief Private data type for use in IO accesses to/from devices.
 284  *
 285  * This represents some range that is accessible from the device. Examples
 286  * include:
 287  * - Device Registers, which could be readable and/or writeable.
 288  * - Memory that the device has access to, for storing configuration structures.
 289  *
 290  * Access to this range must be made through the _mali_osk_mem_ioread32() and
 291  * _mali_osk_mem_iowrite32() functions.
 292  */
 293 typedef struct _mali_io_address * mali_io_address;
 294
 295 /** @defgroup _MALI_OSK_CPU_PAGE CPU Physical page size macros.
 296  *
 297  * The order of the page size is supplied for
 298  * ease of use by algorithms that might require it, since it is easier to know
 299  * it ahead of time rather than calculating it.
 300  *
 301  * The Mali Page Mask macro masks off the lower bits of a physical address to
 302  * give the start address of the page for that physical address.
 303  *
 304  * @note The Mali device driver code is designed for systems with 4KB page size.
 305  * Changing these macros will not make the entire Mali device driver work with
 306  * page sizes other than 4KB.
 307  *
 308  * @note The CPU Physical Page Size has been assumed to be the same as the Mali
 309  * Physical Page Size.
 310  *
 311  * @{
 312  */
 313
 314 /** CPU Page Order, as log to base 2 of the Page size. @see _MALI_OSK_CPU_PAGE_SIZE */
 315 #define _MALI_OSK_CPU_PAGE_ORDER ((u32)12)
 316 /** CPU Page Size, in bytes.               */
 317 #define _MALI_OSK_CPU_PAGE_SIZE (((u32)1) << (_MALI_OSK_CPU_PAGE_ORDER))
 318 /** CPU Page Mask, which masks off the offset within a page */
 319 #define _MALI_OSK_CPU_PAGE_MASK (~((((u32)1) << (_MALI_OSK_CPU_PAGE_ORDER)) - ((u32)1)))
 320 /** @} */ /* end of group _MALI_OSK_CPU_PAGE */
 321
 322 /** @defgroup _MALI_OSK_MALI_PAGE Mali Physical Page size macros
 323  *
 324  * Mali Physical page size macros. The order of the page size is supplied for
 325  * ease of use by algorithms that might require it, since it is easier to know
 326  * it ahead of time rather than calculating it.
 327  *
 328  * The Mali Page Mask macro masks off the lower bits of a physical address to
 329  * give the start address of the page for that physical address.
 330  *
 331  * @note The Mali device driver code is designed for systems with 4KB page size.
 332  * Changing these macros will not make the entire Mali device driver work with
 333  * page sizes other than 4KB.
 334  *
 335  * @note The Mali Physical Page Size has been assumed to be the same as the CPU
 336  * Physical Page Size.
 337  *
 338  * @{
 339  */
 340
 341 /** Mali Page Order, as log to base 2 of the Page size. @see _MALI_OSK_MALI_PAGE_SIZE */
 342 #define _MALI_OSK_MALI_PAGE_ORDER ((u32)12)
 343 /** Mali Page Size, in bytes.               */
 344 #define _MALI_OSK_MALI_PAGE_SIZE (((u32)1) << (_MALI_OSK_MALI_PAGE_ORDER))
 345 /** Mali Page Mask, which masks off the offset within a page */
 346 #define _MALI_OSK_MALI_PAGE_MASK (~((((u32)1) << (_MALI_OSK_MALI_PAGE_ORDER)) - ((u32)1)))
 347 /** @} */ /* end of group _MALI_OSK_MALI_PAGE*/
 348
 349 /** @brief flags for mapping a user-accessible memory range
 350  *
 351  * Where a function with prefix '_mali_osk_mem_mapregion' accepts flags as one
 352  * of the function parameters, it will use one of these. These allow per-page
 353  * control over mappings. Compare with the mali_memory_allocation_flag type,
 354  * which acts over an entire range
 355  *
 356  * These may be OR'd together with bitwise OR (|), but must be cast back into
 357  * the type after OR'ing.
 358  */
 359 typedef enum {
 360         _MALI_OSK_MEM_MAPREGION_FLAG_OS_ALLOCATED_PHYSADDR = 0x1, /**< Physical address is OS Allocated */
 361 } _mali_osk_mem_mapregion_flags_t;
 362 /** @} */ /* end group _mali_osk_low_level_memory */
 363
 364 /** @defgroup _mali_osk_notification OSK Notification Queues
 365  * @{ */
 366
 367 /** @brief Private type for notification queue objects */
 368 typedef struct _mali_osk_notification_queue_t_struct _mali_osk_notification_queue_t;
 369
 370 /** @brief Public notification data object type */
 371 typedef struct _mali_osk_notification_t_struct {
 372         u32 notification_type;   /**< The notification type */
 373         u32 result_buffer_size; /**< Size of the result buffer to copy to user space */
 374         void * result_buffer;   /**< Buffer containing any type specific data */
 375 } _mali_osk_notification_t;
 376
 377 /** @} */ /* end group _mali_osk_notification */
 378
 379
 380 /** @defgroup _mali_osk_timer OSK Timer Callbacks
 381  * @{ */
 382
 383 /** @brief Function to call when a timer expires
 384  *
 385  * When a timer expires, this function is called. Note that on many systems,
 386  * a timer callback will be executed in IRQ context. Therefore, restrictions
 387  * may apply on what can be done inside the timer callback.
 388  *
 389  * If a timer requires more work to be done than can be acheived in an IRQ
 390  * context, then it may defer the work with a work-queue. For example, it may
 391  * use \ref _mali_osk_wq_schedule_work() to make use of a bottom-half handler
 392  * to carry out the remaining work.
 393  *
 394  * Stopping the timer with \ref _mali_osk_timer_del() blocks on compeletion of
 395  * the callback. Therefore, the callback may not obtain any mutexes also held
 396  * by any callers of _mali_osk_timer_del(). Otherwise, a deadlock may occur.
 397  *
 398  * @param arg Function-specific data */
 399 typedef void (*_mali_osk_timer_callback_t)(void * arg);
 400
 401 /** @brief Private type for Timer Callback Objects */
 402 typedef struct _mali_osk_timer_t_struct _mali_osk_timer_t;
 403 /** @} */ /* end group _mali_osk_timer */
 404
 405
 406 /** @addtogroup _mali_osk_list OSK Doubly-Linked Circular Lists
 407  * @{ */
 408
 409 /** @brief Public List objects.
 410  *
 411  * To use, add a _mali_osk_list_t member to the structure that may become part
 412  * of a list. When traversing the _mali_osk_list_t objects, use the
 413  * _MALI_OSK_CONTAINER_OF() macro to recover the structure from its
 414  *_mali_osk_list_t member
 415  *
 416  * Each structure may have multiple _mali_osk_list_t members, so that the
 417  * structure is part of multiple lists. When traversing lists, ensure that the
 418  * correct _mali_osk_list_t member is used, because type-checking will be
 419  * lost by the compiler.
 420  */
 421 typedef struct _mali_osk_list_s {
 422         struct _mali_osk_list_s *next;
 423         struct _mali_osk_list_s *prev;
 424 } _mali_osk_list_t;
 425 /** @} */ /* end group _mali_osk_list */
 426
 427 /** @addtogroup _mali_osk_miscellaneous
 428  * @{ */
 429
 430 /** @brief resource description struct
 431  *
 432  * Platform independent representation of a Mali HW resource
 433  */
 434 typedef struct _mali_osk_resource {
 435         const char * description;       /**< short description of the resource */
 436         u32 base;                       /**< Physical base address of the resource, as seen by Mali resources. */
 437         u32 irq;                        /**< IRQ number delivered to the CPU, or -1 to tell the driver to probe for it (if possible) */
 438 } _mali_osk_resource_t;
 439 /** @} */ /* end group _mali_osk_miscellaneous */
 440
 441 /** @defgroup _mali_osk_wait_queue OSK Wait Queue functionality
 442  * @{ */
 443 /** @brief Private type for wait queue objects */
 444 typedef struct _mali_osk_wait_queue_t_struct _mali_osk_wait_queue_t;
 445 /** @} */ /* end group _mali_osk_wait_queue */
 446
 447 /** @} */ /* end group osuapi */
 448
 449 /** @} */ /* end group uddapi */
 450
 451 #ifdef __cplusplus
 452 }
 453 #endif
 454
 455 #endif /* __MALI_OSK_TYPES_H__ */