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/*
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef __NVGPU_POSIX_TYPES_H__
#define __NVGPU_POSIX_TYPES_H__
#include <stdbool.h>
#include <stdint.h>
#include <stddef.h>
#include <errno.h>
#include <limits.h>
#include <string.h>
#include <strings.h>
#include <stdio.h>
#include <stdarg.h>
/*
* For endianness functions.
*/
#include <netinet/in.h>
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
typedef unsigned long long u64;
typedef char s8;
typedef short s16;
typedef int s32;
typedef long long s64;
#define min_t(type, a, b) \
({ \
type __a = (a); \
type __b = (b); \
__a < __b ? __a : __b; \
})
#if defined(min)
#undef min
#endif
#if defined(max)
#undef max
#endif
#define min(a, b) \
({ \
(a) < (b) ? a : b; \
})
#define max(a, b) \
({ \
(a) > (b) ? a : b; \
})
#define min3(a, b, c) min(min(a, b), c)
#define PAGE_SIZE 4096U
#define ARRAY_SIZE(array) \
(sizeof(array) / sizeof((array)[0]))
#define MAX_SCHEDULE_TIMEOUT LONG_MAX
#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
/*
* Only used in clk_gm20b.c which we will never unit test. Don't use!
*/
#define DIV_ROUND_CLOSEST(x, divisor) ({BUG(); 0; })
/*
* Joys of userspace: usually division just works since the compiler can link
* against external division functions implicitly.
*/
#define do_div(a, b) ((a) /= (b))
#define div64_u64(a, b) ((a) / (b))
#define __round_mask(x, y) ((__typeof__(x))((y) - 1))
#define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1)
#define roundup(x, y) round_up(x, y)
#define round_down(x, y) ((x) & ~__round_mask(x, y))
#define ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask))
#define ALIGN(x, a) ALIGN_MASK(x, (typeof(x))(a) - 1)
#define PAGE_ALIGN(x) ALIGN(x, PAGE_SIZE)
/*
* Caps return at the size of the buffer not what would have been written if buf
* were arbitrarily sized.
*/
static inline int scnprintf(char *buf, size_t size, const char *format, ...)
{
size_t ret;
va_list args;
va_start(args, format);
ret = vsnprintf(buf, size, format, args);
va_end(args);
return ret <= size ? ret : size;
}
static inline u32 be32_to_cpu(u32 x)
{
/*
* Conveniently big-endian happens to be network byte order as well so
* we can use ntohl() for this.
*/
return ntohl(x);
}
/*
* Hamming weights.
*/
static inline unsigned long __hweight8(uint8_t x)
{
return (unsigned long)(!!(x & (1 << 0)) +
!!(x & (1 << 1)) +
!!(x & (1 << 2)) +
!!(x & (1 << 3)) +
!!(x & (1 << 4)) +
!!(x & (1 << 5)) +
!!(x & (1 << 6)) +
!!(x & (1 << 7)));
}
static inline unsigned long __hweight16(uint16_t x)
{
return __hweight8((uint8_t)x) +
__hweight8((uint8_t)((x & 0xff00) >> 8));
}
static inline unsigned long __hweight32(uint32_t x)
{
return __hweight16((uint16_t)x) +
__hweight16((uint16_t)((x & 0xffff0000) >> 16));
}
static inline unsigned long __hweight64(uint64_t x)
{
return __hweight32((uint32_t)x) +
__hweight32((uint32_t)((x & 0xffffffff00000000) >> 32));
}
#define hweight32 __hweight32
#define hweight_long __hweight64
/*
* Better suited under a compiler.h type header file, but for now these can live
* here.
*/
#define __must_check
#define __maybe_unused __attribute__((unused))
#define __iomem
#define __user
#define unlikely
#define likely
#define __stringify(x) #x
/*
* Prevent compiler optimizations from mangling writes. But likely most uses of
* this in nvgpu are incorrect (i.e unnecessary).
*/
#define WRITE_ONCE(p, v) \
({ \
volatile typeof(p) *__p__ = &(p); \
*__p__ = v; \
})
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
#define __packed __attribute__((packed))
#define IS_ENABLED(config) 0
#define MAX_ERRNO 4095
#define IS_ERR_VALUE(x) ((x) >= (unsigned long)-MAX_ERRNO)
static inline void *ERR_PTR(long error)
{
return (void *) error;
}
static inline long PTR_ERR(void *error)
{
return (long)(uintptr_t)error;
}
static inline bool IS_ERR(const void *ptr)
{
return IS_ERR_VALUE((unsigned long)ptr);
}
static inline bool IS_ERR_OR_NULL(const void *ptr)
{
return (ptr == NULL) || IS_ERR_VALUE((unsigned long)ptr);
}
#endif
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