1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun #ifndef __ASM_CSKY_BITOPS_H 5*4882a593Smuzhiyun #define __ASM_CSKY_BITOPS_H 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #include <linux/compiler.h> 8*4882a593Smuzhiyun #include <asm/barrier.h> 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun /* 11*4882a593Smuzhiyun * asm-generic/bitops/ffs.h 12*4882a593Smuzhiyun */ ffs(int x)13*4882a593Smuzhiyunstatic inline int ffs(int x) 14*4882a593Smuzhiyun { 15*4882a593Smuzhiyun if (!x) 16*4882a593Smuzhiyun return 0; 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun asm volatile ( 19*4882a593Smuzhiyun "brev %0\n" 20*4882a593Smuzhiyun "ff1 %0\n" 21*4882a593Smuzhiyun "addi %0, 1\n" 22*4882a593Smuzhiyun : "=&r"(x) 23*4882a593Smuzhiyun : "0"(x)); 24*4882a593Smuzhiyun return x; 25*4882a593Smuzhiyun } 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun /* 28*4882a593Smuzhiyun * asm-generic/bitops/__ffs.h 29*4882a593Smuzhiyun */ __ffs(unsigned long x)30*4882a593Smuzhiyunstatic __always_inline unsigned long __ffs(unsigned long x) 31*4882a593Smuzhiyun { 32*4882a593Smuzhiyun asm volatile ( 33*4882a593Smuzhiyun "brev %0\n" 34*4882a593Smuzhiyun "ff1 %0\n" 35*4882a593Smuzhiyun : "=&r"(x) 36*4882a593Smuzhiyun : "0"(x)); 37*4882a593Smuzhiyun return x; 38*4882a593Smuzhiyun } 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun /* 41*4882a593Smuzhiyun * asm-generic/bitops/fls.h 42*4882a593Smuzhiyun */ fls(unsigned int x)43*4882a593Smuzhiyunstatic __always_inline int fls(unsigned int x) 44*4882a593Smuzhiyun { 45*4882a593Smuzhiyun asm volatile( 46*4882a593Smuzhiyun "ff1 %0\n" 47*4882a593Smuzhiyun : "=&r"(x) 48*4882a593Smuzhiyun : "0"(x)); 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun return (32 - x); 51*4882a593Smuzhiyun } 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun /* 54*4882a593Smuzhiyun * asm-generic/bitops/__fls.h 55*4882a593Smuzhiyun */ __fls(unsigned long x)56*4882a593Smuzhiyunstatic __always_inline unsigned long __fls(unsigned long x) 57*4882a593Smuzhiyun { 58*4882a593Smuzhiyun return fls(x) - 1; 59*4882a593Smuzhiyun } 60*4882a593Smuzhiyun 61*4882a593Smuzhiyun #include <asm-generic/bitops/ffz.h> 62*4882a593Smuzhiyun #include <asm-generic/bitops/fls64.h> 63*4882a593Smuzhiyun #include <asm-generic/bitops/find.h> 64*4882a593Smuzhiyun 65*4882a593Smuzhiyun #ifndef _LINUX_BITOPS_H 66*4882a593Smuzhiyun #error only <linux/bitops.h> can be included directly 67*4882a593Smuzhiyun #endif 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun #include <asm-generic/bitops/sched.h> 70*4882a593Smuzhiyun #include <asm-generic/bitops/hweight.h> 71*4882a593Smuzhiyun #include <asm-generic/bitops/lock.h> 72*4882a593Smuzhiyun #include <asm-generic/bitops/atomic.h> 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun /* 75*4882a593Smuzhiyun * bug fix, why only could use atomic!!!! 76*4882a593Smuzhiyun */ 77*4882a593Smuzhiyun #include <asm-generic/bitops/non-atomic.h> 78*4882a593Smuzhiyun #define __clear_bit(nr, vaddr) clear_bit(nr, vaddr) 79*4882a593Smuzhiyun 80*4882a593Smuzhiyun #include <asm-generic/bitops/le.h> 81*4882a593Smuzhiyun #include <asm-generic/bitops/ext2-atomic.h> 82*4882a593Smuzhiyun #endif /* __ASM_CSKY_BITOPS_H */ 83