los_vm_common.h

/*
 * Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
 * Copyright (c) 2020, Huawei Device Co., Ltd. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 *    conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 *    of conditions and the following disclaimer in the documentation and/or other materials
 *    provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 *    to endorse or promote products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/**
 * @defgroup los_vm_map vm common definition
 * @ingroup kernel
 */

#ifndef __LOS_VM_COMMON_H__
#define __LOS_VM_COMMON_H__

#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif /* __cplusplus */
#endif /* __cplusplus */

/* user address space, defaults to below kernel space with a 16MB guard gap on either side */
#ifndef USER_ASPACE_BASE
#define USER_ASPACE_BASE            ((vaddr_t)0x01000000UL)
#endif
#ifndef USER_ASPACE_SIZE
#define USER_ASPACE_SIZE            ((vaddr_t)KERNEL_ASPACE_BASE - USER_ASPACE_BASE - 0x01000000UL)
#endif

#define USER_ASPACE_TOP_MAX         ((vaddr_t)(USER_ASPACE_BASE + USER_ASPACE_SIZE))
#define USER_HEAP_BASE              ((vaddr_t)(USER_ASPACE_TOP_MAX >> 2))
#define USER_MAP_BASE               ((vaddr_t)(USER_ASPACE_TOP_MAX >> 1))
#define USER_MAP_SIZE               ((vaddr_t)(USER_ASPACE_SIZE >> 3))

#ifndef PAGE_SIZE
#define PAGE_SIZE                        (0x1000U)
#endif
#define PAGE_MASK                        (~(PAGE_SIZE - 1))
#define PAGE_SHIFT                       (12)

#define KB                               (1024UL)
#define MB                               (1024UL * 1024UL)
#define GB                               (1024UL * 1024UL * 1024UL)

#define ROUNDUP(a, b)                    (((a) + ((b) - 1)) & ~((b) - 1))
#define ROUNDDOWN(a, b)                  ((a) & ~((b) - 1))
#define ROUNDOFFSET(a, b)                ((a) & ((b) - 1))
#define MIN2(a, b)                       (((a) < (b)) ? (a) : (b))

#define IS_ALIGNED(a, b)                 (!(((UINTPTR)(a)) & (((UINTPTR)(b)) - 1)))
#define IS_PAGE_ALIGNED(x)               IS_ALIGNED(x, PAGE_SIZE)
#define IS_SECTION_ALIGNED(x)            IS_ALIGNED(x, SECTION_SIZE)

#define LOS_ERRNO_VM_NO_ERROR            (0)
#define LOS_ERRNO_VM_GENERIC             (-1)
#define LOS_ERRNO_VM_NOT_FOUND           (-2)
#define LOS_ERRNO_VM_NOT_READY           (-3)
#define LOS_ERRNO_VM_NO_MSG              (-4)
#define LOS_ERRNO_VM_NO_MEMORY           (-5)
#define LOS_ERRNO_VM_ALREADY_STARTED     (-6)
#define LOS_ERRNO_VM_NOT_VALID           (-7)
#define LOS_ERRNO_VM_INVALID_ARGS        (-8)
#define LOS_ERRNO_VM_NOT_ENOUGH_BUFFER   (-9)
#define LOS_ERRNO_VM_NOT_SUSPENDED       (-10)
#define LOS_ERRNO_VM_OBJECT_DESTROYED    (-11)
#define LOS_ERRNO_VM_NOT_BLOCKED         (-12)
#define LOS_ERRNO_VM_TIMED_OUT           (-13)
#define LOS_ERRNO_VM_ALREADY_EXISTS      (-14)
#define LOS_ERRNO_VM_CHANNEL_CLOSED      (-15)
#define LOS_ERRNO_VM_OFFLINE             (-16)
#define LOS_ERRNO_VM_NOT_ALLOWED         (-17)
#define LOS_ERRNO_VM_BAD_PATH            (-18)
#define LOS_ERRNO_VM_ALREADY_MOUNTED     (-19)
#define LOS_ERRNO_VM_IO                  (-20)
#define LOS_ERRNO_VM_NOT_DIR             (-21)
#define LOS_ERRNO_VM_NOT_FILE            (-22)
#define LOS_ERRNO_VM_RECURSE_TOO_DEEP    (-23)
#define LOS_ERRNO_VM_NOT_SUPPORTED       (-24)
#define LOS_ERRNO_VM_TOO_BIG             (-25)
#define LOS_ERRNO_VM_CANCELLED           (-26)
#define LOS_ERRNO_VM_NOT_IMPLEMENTED     (-27)
#define LOS_ERRNO_VM_CHECKSUM_FAIL       (-28)
#define LOS_ERRNO_VM_CRC_FAIL            (-29)
#define LOS_ERRNO_VM_CMD_UNKNOWN         (-30)
#define LOS_ERRNO_VM_BAD_STATE           (-31)
#define LOS_ERRNO_VM_BAD_LEN             (-32)
#define LOS_ERRNO_VM_BUSY                (-33)
#define LOS_ERRNO_VM_THREAD_DETACHED     (-34)
#define LOS_ERRNO_VM_I2C_NACK            (-35)
#define LOS_ERRNO_VM_ALREADY_EXPIRED     (-36)
#define LOS_ERRNO_VM_OUT_OF_RANGE        (-37)
#define LOS_ERRNO_VM_NOT_CONFIGURED      (-38)
#define LOS_ERRNO_VM_NOT_MOUNTED         (-39)
#define LOS_ERRNO_VM_FAULT               (-40)
#define LOS_ERRNO_VM_NO_RESOURCES        (-41)
#define LOS_ERRNO_VM_BAD_HANDLE          (-42)
#define LOS_ERRNO_VM_ACCESS_DENIED       (-43)
#define LOS_ERRNO_VM_PARTIAL_WRITE       (-44)
#define LOS_ERRNO_VM_LOCK                (-45)
#define LOS_ERRNO_VM_MAP_FAILED          (-46)

#define VM_ERR(args...) do {                     \
    PRINT_ERR("%s %d ", __FUNCTION__, __LINE__); \
    if (PRINT_LEVEL == LOS_DEBUG_LEVEL) {        \
        PRINTK(args);                            \
    }                                            \
    PRINTK("\n");                                \
} while (0)

#ifdef __cplusplus
#if __cplusplus
}
#endif /* __cplusplus */
#endif /* __cplusplus */

#endif /* __LOS_VM_COMMON_H__ */