/* $OpenBSD: cpu.h,v 1.23 2008/10/15 23:23:46 deraadt Exp $ */ /* $NetBSD: cpu.h,v 1.34 2003/06/23 11:01:08 martin Exp $ */ /* * Copyright (c) 1994-1996 Mark Brinicombe. * Copyright (c) 1994 Brini. * All rights reserved. * * This code is derived from software written for Brini by Mark Brinicombe * * 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 Brini. * 4. The name of the company nor the name of the author may be used to * endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI 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. * * RiscBSD kernel project * * cpu.h * * CPU specific symbols * * Created : 18/09/94 * * Based on kate/katelib/arm6.h */ #ifndef _ARM_CPU_H_ #define _ARM_CPU_H_ /* * User-visible definitions */ /* CTL_MACHDEP definitions. */ #define CPU_DEBUG 1 /* int: misc kernel debug control */ #define CPU_BOOTED_DEVICE 2 /* string: device we booted from */ #define CPU_BOOTED_KERNEL 3 /* string: kernel we booted */ #define CPU_CONSDEV 4 /* struct: dev_t of our console */ #define CPU_POWERSAVE 5 /* int: use CPU powersave mode */ #define CPU_ALLOWAPERTURE 6 /* int: allow mmap of /dev/xf86 */ #define CPU_APMWARN 7 /* APM battery warning percentage */ #define CPU_KBDRESET 8 /* int: console keyboard reset */ /* 9 formerly int: CPU_ZTSRAWMODE */ /* 10 formerly struct: CPU_ZTSSCALE */ #define CPU_MAXSPEED 11 /* int: number of valid machdep ids */ #define CPU_LIDSUSPEND 12 /* int: closing lid causes suspend */ #define CPU_MAXID 13 /* number of valid machdep ids */ #define CTL_MACHDEP_NAMES { \ { 0, 0 }, \ { "debug", CTLTYPE_INT }, \ { "booted_device", CTLTYPE_STRING }, \ { "booted_kernel", CTLTYPE_STRING }, \ { "console_device", CTLTYPE_STRUCT }, \ { "powersave", CTLTYPE_INT }, \ { "allowaperture", CTLTYPE_INT }, \ { "apmwarn", CTLTYPE_INT }, \ { "kbdreset", CTLTYPE_INT }, \ { 0, 0 }, \ { 0, 0 }, \ { "maxspeed", CTLTYPE_INT }, \ { "lidsuspend", CTLTYPE_INT } \ } #ifdef _KERNEL /* * Kernel-only definitions */ #include #include #ifndef _LOCORE #if 0 #include #endif #include #include #endif /* !_LOCORE */ #include #ifndef _LOCORE /* 1 == use cpu_sleep(), 0 == don't */ extern int cpu_do_powersave; #endif #ifdef __PROG32 #ifdef _LOCORE #define IRQdisable \ stmfd sp!, {r0} ; \ mrs r0, cpsr ; \ orr r0, r0, #(I32_bit) ; \ msr cpsr_c, r0 ; \ ldmfd sp!, {r0} #define IRQenable \ stmfd sp!, {r0} ; \ mrs r0, cpsr ; \ bic r0, r0, #(I32_bit) ; \ msr cpsr_c, r0 ; \ ldmfd sp!, {r0} #else #define IRQdisable __set_cpsr_c(I32_bit, I32_bit); #define IRQenable __set_cpsr_c(I32_bit, 0); #endif /* _LOCORE */ #endif #ifndef _LOCORE /* All the CLKF_* macros take a struct clockframe * as an argument. */ /* * CLKF_USERMODE: Return TRUE/FALSE (1/0) depending on whether the * frame came from USR mode or not. */ #ifdef __PROG32 #define CLKF_USERMODE(frame) ((frame->if_spsr & PSR_MODE) == PSR_USR32_MODE) #else #define CLKF_USERMODE(frame) ((frame->if_r15 & R15_MODE) == R15_MODE_USR) #endif /* * CLKF_INTR: True if we took the interrupt from inside another * interrupt handler. */ extern int current_intr_depth; #ifdef __PROG32 /* Hack to treat FPE time as interrupt time so we can measure it */ #define CLKF_INTR(frame) \ ((current_intr_depth > 1) || \ (frame->if_spsr & PSR_MODE) == PSR_UND32_MODE) #else #define CLKF_INTR(frame) (current_intr_depth > 1) #endif /* * CLKF_PC: Extract the program counter from a clockframe */ #ifdef __PROG32 #define CLKF_PC(frame) (frame->if_pc) #else #define CLKF_PC(frame) (frame->if_r15 & R15_PC) #endif /* * PROC_PC: Find out the program counter for the given process. */ #ifdef __PROG32 #define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_pc) #else #define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_r15 & R15_PC) #endif /* The address of the vector page. */ extern vaddr_t vector_page; #ifdef __PROG32 void arm32_vector_init(vaddr_t, int); #define ARM_VEC_RESET (1 << 0) #define ARM_VEC_UNDEFINED (1 << 1) #define ARM_VEC_SWI (1 << 2) #define ARM_VEC_PREFETCH_ABORT (1 << 3) #define ARM_VEC_DATA_ABORT (1 << 4) #define ARM_VEC_ADDRESS_EXCEPTION (1 << 5) #define ARM_VEC_IRQ (1 << 6) #define ARM_VEC_FIQ (1 << 7) #define ARM_NVEC 8 #define ARM_VEC_ALL 0xffffffff #endif /* * Per-CPU information. For now we assume one CPU. */ #include #include struct cpu_info { struct proc *ci_curproc; struct schedstate_percpu ci_schedstate; /* scheduler state */ #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) u_long ci_spin_locks; /* # of spin locks held */ u_long ci_simple_locks; /* # of simple locks held */ #endif struct device *ci_dev; /* Device corresponding to this CPU */ u_int32_t ci_arm_cpuid; /* aggregate CPU id */ u_int32_t ci_arm_cputype; /* CPU type */ u_int32_t ci_arm_cpurev; /* CPU revision */ u_int32_t ci_ctrl; /* The CPU control register */ #ifdef MULTIPROCESSOR MP_CPU_INFO_MEMBERS #endif u_int32_t ci_randseed; }; #ifndef MULTIPROCESSOR extern struct cpu_info cpu_info_store; #define curcpu() (&cpu_info_store) #define cpu_number() 0 #define CPU_IS_PRIMARY(ci) 1 #define CPU_INFO_ITERATOR int #define CPU_INFO_FOREACH(cii, ci) \ for (cii = 0, ci = curcpu(); ci != NULL; ci = NULL) #define CPU_INFO_UNIT(ci) 0 #define MAXCPUS 1 #define cpu_unidle(ci) #endif #ifdef __PROG32 void cpu_proc_fork(struct proc *, struct proc *); #else #define cpu_proc_fork(p1, p2) #endif /* * Scheduling glue */ extern int astpending; #define setsoftast() (astpending = 1) /* * Notify the current process (p) that it has a signal pending, * process as soon as possible. */ #define signotify(p) setsoftast() #define cpu_wait(p) /* nothing */ /* * Preempt the current process if in interrupt from user mode, * or after the current trap/syscall if in system mode. */ extern int want_resched; /* resched() was called */ #define need_resched(ci) (want_resched = 1, setsoftast()) #define clear_resched(ci) want_resched = 0 /* * Give a profiling tick to the current process when the user profiling * buffer pages are invalid. On the i386, request an ast to send us * through trap(), marking the proc as needing a profiling tick. */ #define need_proftick(p) setsoftast() #ifndef acorn26 /* * cpu device glue (belongs in cpuvar.h) */ struct device; void cpu_attach (struct device *); int cpu_alloc_idlepcb (struct cpu_info *); #endif /* * Random cruft */ /* locore.S */ void atomic_set_bit (u_int *address, u_int setmask); void atomic_clear_bit (u_int *address, u_int clearmask); /* cpuswitch.S */ struct pcb; void savectx (struct pcb *pcb); /* ast.c */ void userret (struct proc *p); /* machdep.h */ void bootsync (int); /* fault.c */ int badaddr_read (void *, size_t, void *); /* syscall.c */ void swi_handler (trapframe_t *); /* machine_machdep.c */ void board_startup(void); #endif /* !_LOCORE */ #endif /* _KERNEL */ #endif /* !_ARM_CPU_H_ */ /* End of cpu.h */