/* $NetBSD: cpu.h,v 1.106 2024/03/31 17:13:29 thorpej Exp $ */ /*- * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center, and by Charles M. Hannum. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * 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. 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 _ALPHA_CPU_H_ #define _ALPHA_CPU_H_ #if defined(_KERNEL_OPT) #include "opt_gprof.h" #include "opt_multiprocessor.h" #include "opt_lockdebug.h" #endif /* * Exported definitions unique to Alpha cpu support. */ #include <machine/alpha_cpu.h> #if defined(_KERNEL) || defined(_KMEMUSER) #include <sys/cpu_data.h> #include <sys/cctr.h> #include <sys/intr.h> #include <machine/frame.h> #ifndef _KERNEL #include <stddef.h> #endif /* ! _KERNEL */ /* * Machine check information. */ struct mchkinfo { volatile int mc_expected; /* machine check is expected */ volatile int mc_received; /* machine check was received */ }; /* * Per-cpu information. Data accessed by MI code is marked [MI]. */ struct cpu_info { struct cpu_data ci_data; /* [MI] general per-cpu data */ struct lwp *ci_curlwp; /* [MI] current owner of the cpu */ struct lwp *ci_onproc; /* [MI] current user LWP / kthread */ struct cctr_state ci_cc; /* [MI] cycle counter state */ volatile int ci_mtx_count; /* [MI] neg count of spin mutexes */ volatile int ci_mtx_oldspl; /* [MI] for spin mutex splx() */ u_long ci_intrdepth; /* interrupt trap depth */ volatile u_long ci_ssir; /* simulated software interrupt reg */ /* LWPs for soft intr dispatch */ struct lwp *ci_silwps[SOFTINT_COUNT]; struct cpu_softc *ci_softc; /* pointer to our device */ struct pmap *ci_pmap; /* currently-activated pmap */ u_int ci_next_asn; /* next ASN to assign */ u_long ci_asn_gen; /* current ASN generation */ struct mchkinfo ci_mcinfo; /* machine check info */ /* * The following must be in their own cache line, as they are * stored to regularly by remote CPUs. */ volatile u_long ci_ipis /* interprocessor interrupts pending */ __aligned(64); u_int ci_want_resched; /* [MI] preempt current process */ /* * These are largely static, and will frequently be fetched * by other CPUs. For that reason, they get their own cache * line, too. */ struct cpu_info *ci_next /* next cpu_info structure */ __aligned(64); cpuid_t ci_cpuid; /* [MI] our CPU ID */ volatile u_long ci_flags; /* flags; see below */ uint64_t ci_pcc_freq; /* cpu cycles/second */ struct trapframe *ci_db_regs; /* registers for debuggers */ u_int ci_nintrhand; /* # of interrupt handlers */ #if defined(GPROF) && defined(MULTIPROCESSOR) struct gmonparam *ci_gmon; /* [MI] per-cpu GPROF */ #endif }; /* Ensure some cpu_info fields are within the signed 16-bit displacement. */ __CTASSERT(offsetof(struct cpu_info, ci_curlwp) <= 0x7ff0); __CTASSERT(offsetof(struct cpu_info, ci_ssir) <= 0x7ff0); #endif /* _KERNEL || _KMEMUSER */ #if defined(_KERNEL) #define CPUF_PRIMARY 0x01 /* CPU is primary CPU */ #define CPUF_PRESENT 0x02 /* CPU is present */ #define CPUF_RUNNING 0x04 /* CPU is running */ #define CPUF_PAUSED 0x08 /* CPU is paused */ extern struct cpu_info cpu_info_primary; extern struct cpu_info *cpu_info_list; #define CPU_INFO_ITERATOR int __unused #define CPU_INFO_FOREACH(cii, ci) ci = cpu_info_list; \ ci != NULL; ci = ci->ci_next #if defined(MULTIPROCESSOR) extern volatile u_long cpus_running; extern volatile u_long cpus_paused; extern struct cpu_info *cpu_info[]; #define curlwp ((struct lwp *)alpha_pal_rdval()) #define curcpu() curlwp->l_cpu #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) void cpu_boot_secondary_processors(void); void cpu_pause_resume(unsigned long, int); void cpu_pause_resume_all(int); #else /* ! MULTIPROCESSOR */ #define curcpu() (&cpu_info_primary) #define curlwp curcpu()->ci_curlwp #endif /* MULTIPROCESSOR */ /* * definitions of cpu-dependent requirements * referenced in generic code */ #define cpu_number() alpha_pal_whami() #define cpu_proc_fork(p1, p2) /* nothing */ /* * Arguments to hardclock and gatherstats encapsulate the previous * machine state in an opaque clockframe. On the alpha, we use * what we push on an interrupt (a trapframe). */ struct clockframe { struct trapframe cf_tf; }; #define CLKF_USERMODE(framep) \ (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_USERMODE) != 0) #define CLKF_PC(framep) ((framep)->cf_tf.tf_regs[FRAME_PC]) /* * This isn't perfect; if the clock interrupt comes in before the * r/m/w cycle is complete, we won't be counted... but it's not * like this statistic has to be extremely accurate. */ #define CLKF_INTR(framep) \ ((curcpu()->ci_intrdepth & 0xf) != 0) /* see interrupt() */ /* * This is used during profiling to integrate system time. It can safely * assume that the process is resident. */ #define LWP_PC(p) ((l)->l_md.md_tf->tf_regs[FRAME_PC]) void cpu_need_proftick(struct lwp *); void cpu_signotify(struct lwp *); #define aston(l) ((l)->l_md.md_astpending = 1) #endif /* _KERNEL */ /* * CTL_MACHDEP definitions. */ #define CPU_CONSDEV 1 /* dev_t: console terminal device */ #define CPU_ROOT_DEVICE 2 /* string: root device name */ #define CPU_UNALIGNED_PRINT 3 /* int: print unaligned accesses */ #define CPU_UNALIGNED_FIX 4 /* int: fix unaligned accesses */ #define CPU_UNALIGNED_SIGBUS 5 /* int: SIGBUS unaligned accesses */ #define CPU_BOOTED_KERNEL 6 /* string: booted kernel name */ #define CPU_FP_SYNC_COMPLETE 7 /* int: always fixup sync fp traps */ #define CPU_CCTR 8 /* int: using CC timecounter */ #define CPU_IS_QEMU 9 /* int: running under Qemu */ #define CPU_FP_COMPLETE_DEBUG 10 /* int: enable FP completion debug */ #define CPU_RPB_TYPE 11 /* quad: system type (from RPB) */ #define CPU_RPB_VARIATION 12 /* quad: system variation (from RPB) */ #ifdef _KERNEL struct pcb; struct proc; struct reg; struct rpb; struct trapframe; int badaddr(void *, size_t); void * cpu_uarea_alloc(bool); bool cpu_uarea_free(void *); void cpu_idle_wtint(void); extern void (*cpu_idle_fn)(void); #define cpu_idle() (*cpu_idle_fn)() void cpu_initclocks_secondary(void); #endif /* _KERNEL */ #endif /* _ALPHA_CPU_H_ */
