259 lines
6.5 KiB
C
259 lines
6.5 KiB
C
/* $NetBSD: cpu.h,v 1.20 2002/03/09 19:11:21 bjh21 Exp $ */
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/*
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* Copyright (c) 1994-1996 Mark Brinicombe.
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* Copyright (c) 1994 Brini.
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* All rights reserved.
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*
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* This code is derived from software written for Brini by Mark Brinicombe
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Brini.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* RiscBSD kernel project
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*
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* cpu.h
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*
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* CPU specific symbols
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*
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* Created : 18/09/94
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*
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* Based on kate/katelib/arm6.h
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*/
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#ifndef _ARM_CPU_H_
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#define _ARM_CPU_H_
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/*
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* User-visible definitions
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*/
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/* CTL_MACHDEP definitions. */
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#define CPU_DEBUG 1 /* int: misc kernel debug control */
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#define CPU_BOOTED_DEVICE 2 /* string: device we booted from */
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#define CPU_BOOTED_KERNEL 3 /* string: kernel we booted */
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#define CPU_CONSDEV 4 /* struct: dev_t of our console */
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#define CPU_MAXID 5 /* number of valid machdep ids */
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#define CTL_MACHDEP_NAMES { \
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{ 0, 0 }, \
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{ "debug", CTLTYPE_INT }, \
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{ "booted_device", CTLTYPE_STRING }, \
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{ "booted_kernel", CTLTYPE_STRING }, \
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{ "console_device", CTLTYPE_STRUCT }, \
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}
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#ifdef _KERNEL
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/*
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* Kernel-only definitions
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*/
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#ifndef _LKM
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#include "opt_cputypes.h"
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#include "opt_lockdebug.h"
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#endif /* !_LKM */
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#include <machine/intr.h>
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#ifndef _LOCORE
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#include <sys/user.h>
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#include <machine/frame.h>
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#include <machine/pcb.h>
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#endif /* !_LOCORE */
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#include <arm/armreg.h>
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#ifdef __PROG32
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#ifdef _LOCORE
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#define IRQdisable \
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stmfd sp!, {r0} ; \
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mrs r0, cpsr_all ; \
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orr r0, r0, #(I32_bit) ; \
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msr cpsr_all, r0 ; \
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ldmfd sp!, {r0}
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#define IRQenable \
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stmfd sp!, {r0} ; \
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mrs r0, cpsr_all ; \
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bic r0, r0, #(I32_bit) ; \
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msr cpsr_all, r0 ; \
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ldmfd sp!, {r0}
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#else
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#define IRQdisable SetCPSR(I32_bit, I32_bit);
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#define IRQenable SetCPSR(I32_bit, 0);
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#endif /* _LOCORE */
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#endif
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#ifndef _LOCORE
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/* All the CLKF_* macros take a struct clockframe * as an argument. */
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/*
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* CLKF_USERMODE: Return TRUE/FALSE (1/0) depending on whether the
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* frame came from USR mode or not.
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*/
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#ifdef __PROG32
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#define CLKF_USERMODE(frame) ((frame->if_spsr & PSR_MODE) == PSR_USR32_MODE)
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#else
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#define CLKF_USERMODE(frame) ((frame->if_r15 & R15_MODE) == R15_MODE_USR)
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#endif
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/*
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* CLKF_BASEPRI: True if we were at spl0 before the interrupt
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*
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* This needs straighening, prob is the frame does not have info on the
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* priority a guess that needs trying is (current_spl_level == SPL0)
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*/
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#define CLKF_BASEPRI(frame) CLKF_USERMODE(frame)
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/*
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* CLKF_INTR: True if we took the interrupt from inside another
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* interrupt handler.
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*/
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extern int current_intr_depth;
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#ifdef __PROG32
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/* Hack to treat FPE time as interrupt time so we can measure it */
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#define CLKF_INTR(frame) \
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((current_intr_depth > 1) || \
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(frame->if_spsr & PSR_MODE) == PSR_UND32_MODE)
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#else
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#define CLKF_INTR(frame) (current_intr_depth > 1)
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#endif
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/*
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* CLKF_PC: Extract the program counter from a clockframe
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*/
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#ifdef __PROG32
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#define CLKF_PC(frame) (frame->if_pc)
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#else
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#define CLKF_PC(frame) (frame->if_r15 & R15_PC)
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#endif
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/*
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* PROC_PC: Find out the program counter for the given process.
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*/
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#ifdef __PROG32
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#define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_pc)
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#else
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#define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_r15 & R15_PC)
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#endif
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/*
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* Per-CPU information. For now we assume one CPU.
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*/
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#include <sys/device.h>
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#include <sys/sched.h>
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struct cpu_info {
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struct schedstate_percpu ci_schedstate; /* scheduler state */
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#if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
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u_long ci_spin_locks; /* # of spin locks held */
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u_long ci_simple_locks; /* # of simple locks held */
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#endif
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struct evcnt ci_arm700bugcount;
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};
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extern struct cpu_info cpu_info_store;
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#define curcpu() (&cpu_info_store)
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#define cpu_number() 0
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/*
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* Scheduling glue
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*/
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extern int astpending;
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#define setsoftast() (astpending = 1)
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/*
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* Notify the current process (p) that it has a signal pending,
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* process as soon as possible.
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*/
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#define signotify(p) setsoftast()
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#define cpu_wait(p) /* nothing */
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/*
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* Preempt the current process if in interrupt from user mode,
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* or after the current trap/syscall if in system mode.
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*/
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int want_resched; /* resched() was called */
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#define need_resched(ci) (want_resched = 1, setsoftast())
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/*
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* Give a profiling tick to the current process when the user profiling
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* buffer pages are invalid. On the i386, request an ast to send us
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* through trap(), marking the proc as needing a profiling tick.
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*/
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#define need_proftick(p) ((p)->p_flag |= P_OWEUPC, setsoftast())
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#ifndef arm26
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/*
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* cpu device glue (belongs in cpuvar.h)
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*/
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struct device;
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void cpu_attach __P((struct device *));
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#endif
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/*
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* Random cruft
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*/
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/* locore.S */
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void atomic_set_bit __P((u_int *address, u_int setmask));
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void atomic_clear_bit __P((u_int *address, u_int clearmask));
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/* cpuswitch.S */
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struct pcb;
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void savectx __P((struct pcb *pcb));
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/* ast.c */
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void userret __P((register struct proc *p));
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/* machdep.h */
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void bootsync __P((void));
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/* fault.c */
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int badaddr_read __P((void *, size_t, void *));
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/* syscall.c */
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void swi_handler __P((trapframe_t *));
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#endif /* !_LOCORE */
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#endif /* _KERNEL */
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#endif /* !_ARM_CPU_H_ */
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/* End of cpu.h */
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