/* $Id: VIS.h,v 1.4 1999/05/25 16:52:50 jj Exp $ * VIS.h: High speed copy/clear operations utilizing the UltraSparc *        Visual Instruction Set. * * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) * Copyright (C) 1996, 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz) */	/* VIS code can be used for numerous copy/set operation variants.	 * It can be made to work in the kernel, one single instance,	 * for all of memcpy, copy_to_user, and copy_from_user by setting	 * the ASI src/dest globals correctly.  Furthermore it can	 * be used for kernel-->kernel page copies as well, a hook label	 * is put in here just for this purpose.	 *	 * For userland, compiling this without __KERNEL__ defined makes	 * it work just fine as a generic libc bcopy and memcpy.	 * If for userland it is compiled with a 32bit gcc (but you need	 * -Wa,-Av9a), the code will just rely on lower 32bits of	 * IEU registers, if you compile it with 64bit gcc (ie. define	 * __sparc_v9__), the code will use full 64bit.	 */#ifndef __VIS_H#define __VIS_H	 #ifdef __KERNEL__#include <asm/head.h>#include <asm/asi.h>#else#define ASI_AIUS		0x11 /* Secondary, user				*/#define ASI_BLK_AIUS		0x71 /* Secondary, user, blk ld/st		*/#define ASI_P			0x80 /* Primary, implicit			*/#define ASI_S			0x81 /* Secondary, implicit			*/#define ASI_BLK_COMMIT_P	0xe0 /* Primary, blk store commit		*/#define ASI_BLK_COMMIT_S	0xe1 /* Secondary, blk store commit		*/#define ASI_BLK_P		0xf0 /* Primary, blk ld/st			*/#define ASI_BLK_S		0xf1 /* Secondary, blk ld/st			*/#define FPRS_FEF		0x04#endif	/* I'm telling you, they really did this chip right.	 * Perhaps the SunSoft folks should visit some of the	 * people in Sun Microelectronics and start some brain	 * cell exchange program...	 */#define ASI_BLK_XOR		(ASI_P ^ ASI_BLK_P)	/* Well, things get more hairy if we use ASI_AIUS as	 * USER_DS and ASI_P as KERNEL_DS, we'd reach	 * commit block stores this way which is not what we want...	 */	/* ASI_P->ASI_BLK_P && ASI_AIUS->ASI_BLK_AIUS transitions can be done	 * as blkasi = asi | ASI_BLK_OR	 */#define ASI_BLK_OR		(ASI_BLK_P & ~ASI_P)	/* Transition back from ASI_BLK_P->ASI_P && ASI_BLK_AIUS->ASI_AIUS is	 * more complicated:	 * asi = blkasi ^ (blkasi >> 3) ^ ASI_BLK_XOR1	 */#define ASI_BLK_XOR1		(ASI_BLK_P ^ (ASI_BLK_P >> 3) ^ ASI_P)#define	asi_src			%o3#define asi_dest		%o4#ifdef __KERNEL__#define ASI_SETSRC_BLK		wr	asi_src, 0, %asi;#define ASI_SETSRC_NOBLK	wr	asi_src, 0, %asi;#define ASI_SETDST_BLK		wr	asi_dest, 0, %asi;#define ASI_SETDST_NOBLK	wr	asi_dest, 0, %asi;#define ASIBLK			%asi#define ASINORMAL		%asi#define LDUB			lduba#define LDUH			lduha#define LDUW			lduwa#define LDX			ldxa#define LDD			ldda#define LDDF			ldda#define LDBLK			ldda#define STB			stba#define STH			stha#define STW			stwa#define STD			stda#define STX			stxa#define STDF			stda#define STBLK			stda#else#define ASI_SETSRC_BLK#define ASI_SETSRC_NOBLK#define ASI_SETDST_BLK#define ASI_SETDST_NOBLK#define ASI_SETDST_SPECIAL#define ASIBLK			%asi#define ASINORMAL#define LDUB			ldub#define LDUH			lduh#define LDUW			lduw#define LDD			ldd#define LDX			ldx#define LDDF			ldd#define LDBLK			ldda#define STB			stb#define STH			sth#define STW			stw#define STD			std#define STX			stx#define STDF			std#define STBLK			stda#endif#ifdef __KERNEL__#define REGS_64BIT#else#ifndef REGS_64BIT#ifdef __sparc_v9__#define REGS_64BIT#endif#endif#endif#ifndef REGS_64BIT#define	xcc	icc#endif#endif