xref: /aosp_15_r20/system/nfc/src/gki/common/gki_common.h (revision 7eba2f3b06c51ae21384f6a4f14577b668a869b3)

/******************************************************************************
 *
 *  Copyright (C) 1999-2012 Broadcom Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/
#ifndef GKI_COMMON_H
#define GKI_COMMON_H

#include "gki.h"

/* Task States: (For OSRdyTbl) */
#define TASK_DEAD 0  /* b0000 */
#define TASK_READY 1 /* b0001 */

/********************************************************************
**  Internal Error codes
*********************************************************************/
#define GKI_ERROR_BUF_CORRUPTED 0xFFFF
#define GKI_ERROR_NOT_BUF_OWNER 0xFFFE
#define GKI_ERROR_FREEBUF_BAD_QID 0xFFFD
#define GKI_ERROR_FREEBUF_BUF_LINKED 0xFFFC
#define GKI_ERROR_SEND_MSG_BAD_DEST 0xFFFB
#define GKI_ERROR_SEND_MSG_BUF_LINKED 0xFFFA
#define GKI_ERROR_ENQUEUE_BUF_LINKED 0xFFF9
#define GKI_ERROR_DELETE_POOL_BAD_QID 0xFFF8
#define GKI_ERROR_BUF_SIZE_TOOBIG 0xFFF7
#define GKI_ERROR_BUF_SIZE_ZERO 0xFFF6

/********************************************************************
**  Misc constants
*********************************************************************/

#define GKI_MAX_INT32 (0x7fffffffL)

/********************************************************************
**  Buffer Management Data Structures
*********************************************************************/

typedef struct _buffer_hdr {
  struct _buffer_hdr* p_next; /* next buffer in the queue */
  uint8_t q_id;               /* id of the queue */
  uint8_t task_id;            /* task which allocated the buffer*/
  uint8_t status;             /* FREE, UNLINKED or QUEUED */
  uint8_t Type;
#if defined(DYN_ALLOC) || defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION)
  uint16_t size;
#endif
} BUFFER_HDR_T;

typedef struct _free_queue {
  BUFFER_HDR_T* p_first; /* first buffer in the queue */
  BUFFER_HDR_T* p_last;  /* last buffer in the queue */
  uint16_t size;         /* size of the buffers in the pool */
  uint16_t total;        /* toatal number of buffers */
  uint16_t cur_cnt;      /* number of  buffers currently allocated */
  uint16_t max_cnt;      /* maximum number of buffers allocated at any time */
} FREE_QUEUE_T;

/* Buffer related defines */
#define ALIGN_POOL(pl_size) \
  ((((pl_size) + 3) / sizeof(uint32_t)) * sizeof(uint32_t))
/* Offset past header */
#define BUFFER_HDR_SIZE (sizeof(BUFFER_HDR_T))
/* Header + Magic Number */
#define BUFFER_PADDING_SIZE (sizeof(BUFFER_HDR_T) + sizeof(uint32_t))
/* pool size must allow for header */
#define MAX_USER_BUF_SIZE ((uint16_t)0xffff - BUFFER_PADDING_SIZE)
#define MAGIC_NO 0xDDBADDBA

#define BUF_STATUS_FREE 0
#define BUF_STATUS_UNLINKED 1
#define BUF_STATUS_QUEUED 2

/* Put all GKI variables into one control block */
typedef struct {
  /* Task management variables */
  /* The stack and stack size are not used on Windows */

#if (GKI_NUM_FIXED_BUF_POOLS > 0)
  uint8_t bufpool0[(ALIGN_POOL(GKI_BUF0_SIZE) + BUFFER_PADDING_SIZE) *
                   GKI_BUF0_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 1)
  uint8_t bufpool1[(ALIGN_POOL(GKI_BUF1_SIZE) + BUFFER_PADDING_SIZE) *
                   GKI_BUF1_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 2)
  uint8_t bufpool2[(ALIGN_POOL(GKI_BUF2_SIZE) + BUFFER_PADDING_SIZE) *
                   GKI_BUF2_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 3)
  uint8_t bufpool3[(ALIGN_POOL(GKI_BUF3_SIZE) + BUFFER_PADDING_SIZE) *
                   GKI_BUF3_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 4)
  uint8_t bufpool4[(ALIGN_POOL(GKI_BUF4_SIZE) + BUFFER_PADDING_SIZE) *
                   GKI_BUF4_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 5)
  uint8_t bufpool5[(ALIGN_POOL(GKI_BUF5_SIZE) + BUFFER_PADDING_SIZE) *
                   GKI_BUF5_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 6)
  uint8_t bufpool6[(ALIGN_POOL(GKI_BUF6_SIZE) + BUFFER_PADDING_SIZE) *
                   GKI_BUF6_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 7)
  uint8_t bufpool7[(ALIGN_POOL(GKI_BUF7_SIZE) + BUFFER_PADDING_SIZE) *
                   GKI_BUF7_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 8)
  uint8_t bufpool8[(ALIGN_POOL(GKI_BUF8_SIZE) + BUFFER_PADDING_SIZE) *
                   GKI_BUF8_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 9)
  uint8_t bufpool9[(ALIGN_POOL(GKI_BUF9_SIZE) + BUFFER_PADDING_SIZE) *
                   GKI_BUF9_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 10)
  uint8_t bufpool10[(ALIGN_POOL(GKI_BUF10_SIZE) + BUFFER_PADDING_SIZE) *
                    GKI_BUF10_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 11)
  uint8_t bufpool11[(ALIGN_POOL(GKI_BUF11_SIZE) + BUFFER_PADDING_SIZE) *
                    GKI_BUF11_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 12)
  uint8_t bufpool12[(ALIGN_POOL(GKI_BUF12_SIZE) + BUFFER_PADDING_SIZE) *
                    GKI_BUF12_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 13)
  uint8_t bufpool13[(ALIGN_POOL(GKI_BUF13_SIZE) + BUFFER_PADDING_SIZE) *
                    GKI_BUF13_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 14)
  uint8_t bufpool14[(ALIGN_POOL(GKI_BUF14_SIZE) + BUFFER_PADDING_SIZE) *
                    GKI_BUF14_MAX];
#endif

#if (GKI_NUM_FIXED_BUF_POOLS > 15)
  uint8_t bufpool15[(ALIGN_POOL(GKI_BUF15_SIZE) + BUFFER_PADDING_SIZE) *
                    GKI_BUF15_MAX];
#endif

  uint8_t* OSStack[GKI_MAX_TASKS];     /* pointer to beginning of stack */
  uint16_t OSStackSize[GKI_MAX_TASKS]; /* stack size available to each task */

  int8_t* OSTName[GKI_MAX_TASKS]; /* name of the task */

  uint8_t OSRdyTbl[GKI_MAX_TASKS];   /* current state of the task */
  uint16_t OSWaitEvt[GKI_MAX_TASKS]; /* events that have to be processed by the
                                        task */
  uint16_t OSWaitForEvt[GKI_MAX_TASKS]; /* events the task is waiting for*/

  uint32_t OSTicks;   /* system ticks from start */
  uint32_t OSIdleCnt; /* idle counter */
  int16_t
      OSDisableNesting; /* counter to keep track of interrupt disable nesting */
  int16_t OSLockNesting; /* counter to keep track of sched lock nesting */
  int16_t OSIntNesting;  /* counter to keep track of interrupt nesting */

  /* Timer related variables */
  int32_t OSTicksTilExp; /* Number of ticks till next timer expires */
#if (GKI_DELAY_STOP_SYS_TICK > 0)
  uint32_t OSTicksTilStop; /* inactivity delay timer; OS Ticks till stopping
                              system tick */
#endif
  int32_t OSNumOrigTicks; /* Number of ticks between last timer expiration to
                             the next one */

  int32_t OSWaitTmr[GKI_MAX_TASKS]; /* ticks the task has to wait, for specific
                                       events */

/* Only take up space timers used in the system (GKI_NUM_TIMERS defined in
 * target.h) */
#if (GKI_NUM_TIMERS > 0)
  int32_t OSTaskTmr0[GKI_MAX_TASKS];
  int32_t OSTaskTmr0R[GKI_MAX_TASKS];
#endif

#if (GKI_NUM_TIMERS > 1)
  int32_t OSTaskTmr1[GKI_MAX_TASKS];
  int32_t OSTaskTmr1R[GKI_MAX_TASKS];
#endif

#if (GKI_NUM_TIMERS > 2)
  int32_t OSTaskTmr2[GKI_MAX_TASKS];
  int32_t OSTaskTmr2R[GKI_MAX_TASKS];
#endif

#if (GKI_NUM_TIMERS > 3)
  int32_t OSTaskTmr3[GKI_MAX_TASKS];
  int32_t OSTaskTmr3R[GKI_MAX_TASKS];
#endif

  /* Buffer related variables */
  BUFFER_HDR_T* OSTaskQFirst[GKI_MAX_TASKS]
                            [NUM_TASK_MBOX]; /* array of pointers to the first
                                                event in the task mailbox */
  BUFFER_HDR_T* OSTaskQLast[GKI_MAX_TASKS]
                           [NUM_TASK_MBOX]; /* array of pointers to the last
                                               event in the task mailbox */

  /* Define the buffer pool management variables */
  FREE_QUEUE_T freeq[GKI_NUM_TOTAL_BUF_POOLS];

  uint16_t pool_buf_size[GKI_NUM_TOTAL_BUF_POOLS];
  uint16_t pool_max_count[GKI_NUM_TOTAL_BUF_POOLS];
  uint16_t pool_additions[GKI_NUM_TOTAL_BUF_POOLS];

  /* Define the buffer pool start addresses */
  uint8_t* pool_start[GKI_NUM_TOTAL_BUF_POOLS]; /* array of pointers to the
                                                   start of each buffer pool */
  uint8_t* pool_end[GKI_NUM_TOTAL_BUF_POOLS]; /* array of pointers to the end of
                                                 each buffer pool */
  uint16_t pool_size[GKI_NUM_TOTAL_BUF_POOLS]; /* actual size of the buffers in
                                                  a pool */

  /* Define the buffer pool access control variables */
  void* p_user_mempool;      /* User O/S memory pool */
  uint16_t pool_access_mask; /* Bits are set if the corresponding buffer pool is
                                a restricted pool */
  uint8_t pool_list[GKI_NUM_TOTAL_BUF_POOLS]; /* buffer pools arranged in the
                                                 order of size */
  uint8_t curr_total_no_of_pools; /* number of fixed buf pools + current number
                                     of dynamic pools */

  bool timer_nesting; /* flag to prevent timer interrupt nesting */

  /* Time queue arrays */
  TIMER_LIST_Q* timer_queues[GKI_MAX_TIMER_QUEUES];
  /* System tick callback */
  SYSTEM_TICK_CBACK* p_tick_cb;
  bool system_tick_running; /* TRUE if system tick is running. Valid only if
                               p_tick_cb is not NULL */

} tGKI_COM_CB;

/* Internal GKI function prototypes */
extern bool gki_chk_buf_damage(void*);
extern bool gki_chk_buf_owner(void*);
extern void gki_buffer_init(void);
extern void gki_timers_init(void);
extern void gki_adjust_timer_count(int32_t);

#endif