1 /* $NetBSD: cpu.h,v 1.3 1997/11/27 10:18:43 sakamoto Exp $ */ 2 3 /* 4 * Copyright (C) 1995-1997 Wolfgang Solfrank. 5 * Copyright (C) 1995-1997 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 #ifndef _MACHINE_CPU_H_ 34 #define _MACHINE_CPU_H_ 35 36 #include <machine/frame.h> 37 #include <machine/psl.h> 38 39 #define CLKF_USERMODE(frame) (((frame)->srr1 & PSL_PR) != 0) 40 #define CLKF_BASEPRI(frame) ((frame)->pri == 0) 41 #define CLKF_PC(frame) ((frame)->srr0) 42 #define CLKF_INTR(frame) ((frame)->depth > 0) 43 44 #define cpu_swapout(p) 45 #define cpu_wait(p) 46 47 extern void delay __P((int)); 48 #define DELAY(n) delay(n) 49 50 extern volatile int want_resched; 51 extern volatile int astpending; 52 53 #define need_resched() (want_resched = 1, astpending = 1) 54 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, astpending = 1) 55 #define signotify(p) (astpending = 1) 56 57 #define CACHELINESIZE 32 /* For now XXX */ 58 59 extern __inline void 60 syncicache(from, len) 61 void *from; 62 int len; 63 { 64 int l = len; 65 void *p = from; 66 67 do { 68 __asm__ __volatile ("dcbst 0,%0" :: "r"(p)); 69 p += CACHELINESIZE; 70 } while ((l -= CACHELINESIZE) > 0); 71 __asm__ __volatile ("sync"); 72 do { 73 __asm__ __volatile ("icbi 0,%0" :: "r"(from)); 74 from += CACHELINESIZE; 75 } while ((len -= CACHELINESIZE) > 0); 76 __asm__ __volatile ("isync"); 77 } 78 79 extern char *bootpath; 80 81 #endif /* _MACHINE_CPU_H_ */ 82