/* $OpenBSD: cpu.h,v 1.31 2007/11/15 21:23:16 miod Exp $ */ /* * Copyright (c) 1996 Nivas Madhur * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * 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, Lawrence Berkeley Laboratory. * * 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. 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. */ #ifndef __M88K_CPU_H__ #define __M88K_CPU_H__ /* * CTL_MACHDEP definitinos. */ #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 }, \ } #ifdef _KERNEL #include #include #include #include #include #include #if defined(MULTIPROCESSOR) #if !defined(MAX_CPUS) || MAX_CPUS > 4 #undef MAX_CPUS #define MAX_CPUS 4 #endif #else #if !defined(MAX_CPUS) #undef MAX_CPUS #define MAX_CPUS 1 #endif #endif #ifndef _LOCORE extern u_int max_cpus; /* * Per-CPU data structure */ struct cpu_info { u_int ci_flags; #define CIF_ALIVE 0x01 /* cpu initialized */ #define CIF_PRIMARY 0x02 /* primary cpu */ struct proc *ci_curproc; /* current process... */ struct pcb *ci_curpcb; /* ...and its pcb */ u_int ci_cpuid; /* cpu number */ u_int ci_primary; /* set if master cpu */ u_int ci_pfsr_i0, ci_pfsr_i1; /* instruction... */ u_int ci_pfsr_d0, ci_pfsr_d1; /* ... and data CMMU PFSRs */ struct schedstate_percpu ci_schedstate; /* scheduling state */ int ci_want_resched; /* need_resched() invoked */ u_int ci_intrdepth; /* interrupt depth */ u_long ci_spin_locks; /* spin locks counter */ int ci_ddb_state; /* ddb status */ #define CI_DDB_RUNNING 0 #define CI_DDB_ENTERDDB 1 #define CI_DDB_INDDB 2 #define CI_DDB_PAUSE 3 int ci_ipi; /* pending ipis */ #define CI_IPI_NOTIFY 0x00000001 #define CI_IPI_HARDCLOCK 0x00000002 #define CI_IPI_STATCLOCK 0x00000004 #define CI_IPI_DDB 0x00000008 int ci_softintr; /* pending soft interrupts */ }; extern cpuid_t master_cpu; extern struct cpu_info m88k_cpus[MAX_CPUS]; #define CPU_INFO_ITERATOR cpuid_t #define CPU_INFO_FOREACH(cii, ci) \ for ((cii) = 0; (cii) < MAX_CPUS; (cii)++) \ if (((ci) = &m88k_cpus[cii])->ci_flags & CIF_ALIVE) #define CPU_INFO_UNIT(ci) ((ci)->ci_cpuid) #if defined(MULTIPROCESSOR) static __inline__ struct cpu_info * curcpu(void) { struct cpu_info *cpuptr; __asm__ __volatile__ ("ldcr %0, cr17" : "=r" (cpuptr)); return cpuptr; } #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CIF_PRIMARY) void cpu_boot_secondary_processors(void); __dead void cpu_emergency_disable(void); void m88k_send_ipi(int, cpuid_t); void m88k_broadcast_ipi(int); #else /* MULTIPROCESSOR */ #define curcpu() (&m88k_cpus[0]) #define CPU_IS_PRIMARY(ci) 1 #endif /* MULTIPROCESSOR */ void set_cpu_number(cpuid_t); /* * The md code may hardcode this in some very specific situations. */ #if !defined(cpu_number) #define cpu_number() curcpu()->ci_cpuid #endif #define curpcb curcpu()->ci_curpcb #endif /* _LOCORE */ /* * definitions of cpu-dependent requirements * referenced in generic code */ #define cpu_exec(p) do { /* nothing */ } while (0) #define cpu_wait(p) do { /* nothing */ } while (0) #define cpu_idle_enter() do { /* nothing */ } while (0) #define cpu_idle_cycle() do { /* nothing */ } while (0) #define cpu_idle_leave() do { /* nothing */ } while (0) #if defined(MULTIPROCESSOR) #include #include #endif /* * Arguments to hardclock and gatherstats encapsulate the previous * machine state in an opaque clockframe. CLKF_INTR is only valid * if the process is in kernel mode. Clockframe is really trapframe, * so pointer to clockframe can be safely cast into a pointer to * trapframe. */ struct clockframe { struct trapframe tf; }; #define CLKF_USERMODE(framep) (((framep)->tf.tf_epsr & PSR_MODE) == 0) #define CLKF_PC(framep) ((framep)->tf.tf_sxip & XIP_ADDR) #define CLKF_INTR(framep) \ (((struct cpu_info *)(framep)->tf.tf_cpu)->ci_intrdepth > 1) /* * Get interrupt glue. */ #include #define SIR_NET 0x01 #define SIR_CLOCK 0x02 #define setsoftint(x) atomic_setbits_int(&curcpu()->ci_softintr, x) #define setsoftnet() setsoftint(SIR_NET) #define setsoftclock() setsoftint(SIR_CLOCK) #define aston(p) ((p)->p_md.md_astpending = 1) /* * This is used during profiling to integrate system time. */ #define PC_REGS(regs) \ (CPU_IS88110 ? ((regs)->exip & XIP_ADDR) : \ ((regs)->sxip & XIP_V ? (regs)->sxip & XIP_ADDR : \ ((regs)->snip & NIP_V ? (regs)->snip & NIP_ADDR : \ (regs)->sfip & FIP_ADDR))) #define PROC_PC(p) PC_REGS((struct reg *)((p)->p_md.md_tf)) /* * Preempt the current process if in interrupt from user mode, * or after the current trap/syscall if in system mode. */ #define need_resched(ci) \ do { \ ci->ci_want_resched = 1; \ if (ci->ci_curproc != NULL) \ aston(ci->ci_curproc); \ } while (0) /* * Give a profiling tick to the current process when the user profiling * buffer pages are invalid. On the m88k, request an ast to send us * through trap(), marking the proc as needing a profiling tick. */ #define need_proftick(p) aston(p) void signotify(struct proc *); int badaddr(vaddr_t addr, int size); #endif /* _KERNEL */ #endif /* __M88K_CPU_H__ */