/* $NetBSD: cpu.h,v 1.25 1997/04/27 20:37:07 thorpej Exp $ */ /* * Copyright (c) 1988 University of Utah. * Copyright (c) 1982, 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department. * * 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, 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * from: Utah $Hdr: cpu.h 1.16 91/03/25$ * * @(#)cpu.h 8.4 (Berkeley) 1/5/94 */ #ifndef _HP300_CPU_H_ #define _HP300_CPU_H_ /* * Exported definitions unique to hp300/68k cpu support. */ /* * Get common m68k CPU definitions. */ #include /* * Get interrupt glue. */ #include /* * definitions of cpu-dependent requirements * referenced in generic code */ #define cpu_swapin(p) /* nothing */ #define cpu_wait(p) /* nothing */ #define cpu_swapout(p) /* nothing */ /* * Arguments to hardclock and gatherstats encapsulate the previous * machine state in an opaque clockframe. One the hp300, we use * what the hardware pushes on an interrupt (frame format 0). */ struct clockframe { u_short sr; /* sr at time of interrupt */ u_long pc; /* pc at time of interrupt */ u_short vo; /* vector offset (4-word frame) */ }; #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) #define CLKF_PC(framep) ((framep)->pc) #if 0 /* We would like to do it this way... */ #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) #else /* but until we start using PSL_M, we have to do this instead */ #define CLKF_INTR(framep) (0) /* XXX */ #endif /* * Preempt the current process if in interrupt from user mode, * or after the current trap/syscall if in system mode. */ #define need_resched() { want_resched++; aston(); } /* * Give a profiling tick to the current process when the user profiling * buffer pages are invalid. On the hp300, request an ast to send us * through trap, marking the proc as needing a profiling tick. */ #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } /* * Notify the current process (p) that it has a signal pending, * process as soon as possible. */ #define signotify(p) aston() #define aston() (astpending++) int astpending; /* need to trap before returning to user mode */ int want_resched; /* resched() was called */ /* * CTL_MACHDEP definitions. */ #define CPU_CONSDEV 1 /* dev_t: console terminal device */ #define CPU_MAXID 2 /* number of valid machdep ids */ #define CTL_MACHDEP_NAMES { \ { 0, 0 }, \ { "console_device", CTLTYPE_STRUCT }, \ } /* * The rest of this should probably be moved to , * although some of it could probably be put into generic 68k headers. */ #ifdef _KERNEL extern char *intiobase, *intiolimit; extern void (*vectab[]) __P((void)); struct frame; struct fpframe; struct pcb; /* locore.s functions */ void m68881_save __P((struct fpframe *)); void m68881_restore __P((struct fpframe *)); u_long getdfc __P((void)); u_long getsfc __P((void)); void DCIA __P((void)); void DCIS __P((void)); void DCIU __P((void)); void ICIA __P((void)); void ICPA __P((void)); void PCIA __P((void)); void TBIA __P((void)); void TBIS __P((vm_offset_t)); void TBIAS __P((void)); void TBIAU __P((void)); #if defined(M68040) void DCFA __P((void)); void DCFP __P((vm_offset_t)); void DCFL __P((vm_offset_t)); void DCPL __P((vm_offset_t)); void DCPP __P((vm_offset_t)); void ICPL __P((vm_offset_t)); void ICPP __P((vm_offset_t)); #endif int suline __P((caddr_t, caddr_t)); void savectx __P((struct pcb *)); void switch_exit __P((struct proc *)); void proc_trampoline __P((void)); void loadustp __P((int)); void doboot __P((void)) __attribute__((__noreturn__)); void ecacheon __P((void)); void ecacheoff __P((void)); /* machdep.c functions */ int badaddr __P((caddr_t)); int badbaddr __P((caddr_t)); /* sys_machdep.c functions */ int cachectl __P((int, caddr_t, int)); /* vm_machdep.c functions */ void physaccess __P((caddr_t, caddr_t, int, int)); void physunaccess __P((caddr_t, int)); int kvtop __P((caddr_t)); /* what is this supposed to do? i.e. how is it different than startrtclock? */ #define enablertclock() #endif /* physical memory sections */ #define ROMBASE (0x00000000) #define INTIOBASE (0x00400000) #define INTIOTOP (0x00600000) #define EXTIOBASE (0x00600000) #define EXTIOTOP (0x20000000) #define MAXADDR (0xFFFFF000) /* * Internal IO space: * * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE). * * Internal IO space is mapped in the kernel from ``intiobase'' to * ``intiolimit'' (defined in locore.s). Since it is always mapped, * conversion between physical and kernel virtual addresses is easy. */ #define ISIIOVA(va) \ ((char *)(va) >= intiobase && (char *)(va) < intiolimit) #define IIOV(pa) ((int)(pa)-INTIOBASE+(int)intiobase) #define IIOP(va) ((int)(va)-(int)intiobase+INTIOBASE) #define IIOPOFF(pa) ((int)(pa)-INTIOBASE) #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */ /* * External IO space: * * DIO ranges from select codes 0-63 at physical addresses given by: * 0x600000 + (sc - 32) * 0x10000 * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for * their control space and the remaining areas, [0x200000-0x400000) and * [0x800000-0x1000000), are for additional space required by a card; * e.g. a display framebuffer. * * DIO-II ranges from select codes 132-255 at physical addresses given by: * 0x1000000 + (sc - 132) * 0x400000 * The address range of DIO-II space is thus [0x1000000-0x20000000). * * DIO/DIO-II space is too large to map in its entirety, instead devices * are mapped into kernel virtual address space allocated from a range * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''. */ #define DIOBASE (0x600000) #define DIOTOP (0x1000000) #define DIOCSIZE (0x10000) #define DIOIIBASE (0x01000000) #define DIOIITOP (0x20000000) #define DIOIICSIZE (0x00400000) /* * HP MMU */ #define MMUBASE IIOPOFF(0x5F4000) #define MMUSSTP 0x0 #define MMUUSTP 0x4 #define MMUTBINVAL 0x8 #define MMUSTAT 0xC #define MMUCMD MMUSTAT #define MMU_UMEN 0x0001 /* enable user mapping */ #define MMU_SMEN 0x0002 /* enable supervisor mapping */ #define MMU_CEN 0x0004 /* enable data cache */ #define MMU_BERR 0x0008 /* bus error */ #define MMU_IEN 0x0020 /* enable instruction cache */ #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */ #define MMU_WPF 0x2000 /* write protect fault */ #define MMU_PF 0x4000 /* page fault */ #define MMU_PTF 0x8000 /* page table fault */ #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR) #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE) #endif /* _HP300_CPU_H_ */