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sys/dev/drm/drmkpi/include/linux/compiler.h
- This file was added.
/*- | |||||
* Copyright (c) 2010 Isilon Systems, Inc. | |||||
* Copyright (c) 2010 iX Systems, Inc. | |||||
* Copyright (c) 2010 Panasas, Inc. | |||||
* Copyright (c) 2013-2016 Mellanox Technologies, Ltd. | |||||
* Copyright (c) 2015 François Tigeot | |||||
* 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 unmodified, 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. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. | |||||
* | |||||
* $FreeBSD$ | |||||
*/ | |||||
#ifndef _LINUX_COMPILER_H_ | |||||
#define _LINUX_COMPILER_H_ | |||||
#include <sys/cdefs.h> | |||||
#include <linux/bitops.h> | |||||
#include <linux/math64.h> | |||||
#define __user | |||||
#define __kernel | |||||
#define __safe | |||||
#define __force | |||||
#define __nocast | |||||
#define __iomem | |||||
#define __chk_user_ptr(x) ((void)0) | |||||
#define __chk_io_ptr(x) ((void)0) | |||||
#define __builtin_warning(x, y...) (1) | |||||
#define __acquires(x) | |||||
#define __releases(x) | |||||
#define __acquire(x) do { } while (0) | |||||
#define __release(x) do { } while (0) | |||||
#define __cond_lock(x,c) (c) | |||||
#define __bitwise | |||||
#define __devinitdata | |||||
#define __deprecated | |||||
#define __init | |||||
#define __initconst | |||||
#define __devinit | |||||
#define __devexit | |||||
#define __exit | |||||
#define __rcu | |||||
#define __percpu | |||||
#define __weak __weak_symbol | |||||
#define __malloc | |||||
#define ___stringify(...) #__VA_ARGS__ | |||||
#define __stringify(...) ___stringify(__VA_ARGS__) | |||||
#define __attribute_const__ __attribute__((__const__)) | |||||
#undef __always_inline | |||||
#define __always_inline inline | |||||
#define noinline __noinline | |||||
#define ____cacheline_aligned __aligned(CACHE_LINE_SIZE) | |||||
#define likely(x) __builtin_expect(!!(x), 1) | |||||
#define unlikely(x) __builtin_expect(!!(x), 0) | |||||
#define typeof(x) __typeof(x) | |||||
#define uninitialized_var(x) x = x | |||||
#define __maybe_unused __unused | |||||
#define __always_unused __unused | |||||
#define __must_check __result_use_check | |||||
#define __printf(a,b) __printflike(a,b) | |||||
#define barrier() __asm__ __volatile__("": : :"memory") | |||||
#define ___PASTE(a,b) a##b | |||||
#define __PASTE(a,b) ___PASTE(a,b) | |||||
#define ACCESS_ONCE(x) (*(volatile __typeof(x) *)&(x)) | |||||
#define WRITE_ONCE(x,v) do { \ | |||||
barrier(); \ | |||||
ACCESS_ONCE(x) = (v); \ | |||||
barrier(); \ | |||||
} while (0) | |||||
#define READ_ONCE(x) ({ \ | |||||
__typeof(x) __var = ({ \ | |||||
barrier(); \ | |||||
ACCESS_ONCE(x); \ | |||||
}); \ | |||||
barrier(); \ | |||||
__var; \ | |||||
}) | |||||
#define lockless_dereference(p) READ_ONCE(p) | |||||
#define _AT(T,X) ((T)(X)) | |||||
#ifndef PRINT_UNIMPLEMENTED | |||||
#define PRINT_UNIMPLEMENTED 1 | |||||
#endif | |||||
#define UNIMPLEMENTED_ONCE() do { \ | |||||
static int seen = 0; \ | |||||
\ | |||||
if (!seen && PRINT_UNIMPLEMENTED) { \ | |||||
log(LOG_WARNING, \ | |||||
"%s not implemented -- see your local kernel hacker\n", \ | |||||
__FUNCTION__); \ | |||||
seen = 1; \ | |||||
} \ | |||||
} while (0) | |||||
#define DODGY_ONCE() do { \ | |||||
static int seen = 0; \ | |||||
\ | |||||
if (!seen && PRINT_UNIMPLEMENTED) { \ | |||||
log(LOG_WARNING, \ | |||||
"%s is dodgy -- see your local kernel hacker\n", \ | |||||
__FUNCTION__); \ | |||||
seen = 1; \ | |||||
} \ | |||||
} while (0) | |||||
#undef UNIMPLEMENTED /* is defined to NOP in kernel lkpi */ | |||||
#define UNIMPLEMENTED() UNIMPLEMENTED_ONCE() | |||||
#define WARN_NOT() UNIMPLEMENTED_ONCE() | |||||
#define DODGY() DODGY_ONCE() | |||||
#define idr_init_base(idr,base) idr_init(idr) | |||||
static inline uint64_t mul_u64_u32_div(uint64_t a, uint32_t mul, uint32_t divisor) | |||||
{ | |||||
union { | |||||
uint64_t ll; | |||||
struct { | |||||
#ifdef __BIG_ENDIAN | |||||
uint32_t high, low; | |||||
#else | |||||
uint32_t low, high; | |||||
#endif | |||||
} l; | |||||
} u, rl, rh; | |||||
u.ll = a; | |||||
rl.ll = mul_u32_u32(u.l.low, mul); | |||||
rh.ll = mul_u32_u32(u.l.high, mul) + rl.l.high; | |||||
/* Bits 32-63 of the result will be in rh.l.low. */ | |||||
rl.l.high = do_div(rh.ll, divisor); | |||||
/* Bits 0-31 of the result will be in rl.l.low. */ | |||||
do_div(rl.ll, divisor); | |||||
rl.l.high = rh.l.low; | |||||
return rl.ll; | |||||
} | |||||
#endif /* _LINUX_COMPILER_H_ */ |