// SPDX-License-Identifier: GPL-2.0/* *	Precise Delay Loops for SuperH * *	Copyright (C) 1999 Niibe Yutaka & Kaz Kojima */ #include <linux/sched.h>#include <linux/delay.h> void __delay(unsigned long loops){	__asm__ __volatile__(		/*		 * ST40-300 appears to have an issue with this code,		 * normally taking two cycles each loop, as with all		 * other SH variants. If however the branch and the		 * delay slot straddle an 8 byte boundary, this increases		 * to 3 cycles.		 * This align directive ensures this doesn't occur.		 */		".balign 8\n\t" 		"tst	%0, %0\n\t"		"1:\t"		"bf/s	1b\n\t"		" dt	%0"		: "=r" (loops)		: "0" (loops)		: "t");} inline void __const_udelay(unsigned long xloops){	xloops *= 4;	__asm__("dmulu.l	%0, %2\n\t"		"sts	mach, %0"		: "=r" (xloops)		: "0" (xloops),		  "r" (cpu_data[raw_smp_processor_id()].loops_per_jiffy * (HZ/4))		: "macl", "mach");	__delay(++xloops);} void __udelay(unsigned long usecs){	__const_udelay(usecs * 0x000010c6);  /* 2**32 / 1000000 */} void __ndelay(unsigned long nsecs){	__const_udelay(nsecs * 0x00000005);}