1 /* $NetBSD: cpu.h,v 1.62 2002/03/10 22:32:31 ragge Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Ludd, University of Lule}, Sweden 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed at Ludd, University of Lule} 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _VAX_CPU_H_ 34 #define _VAX_CPU_H_ 35 36 #if defined(_KERNEL_OPT) 37 #include "opt_multiprocessor.h" 38 #include "opt_lockdebug.h" 39 #endif 40 41 #ifdef _KERNEL 42 43 #include <sys/cdefs.h> 44 #include <sys/device.h> 45 #include <sys/lock.h> 46 #include <sys/sched.h> 47 48 #include <machine/mtpr.h> 49 #include <machine/pcb.h> 50 #include <machine/uvax.h> 51 #include <machine/psl.h> 52 53 #define enablertclock() 54 #define cpu_wait(p) 55 56 /* 57 * All cpu-dependent info is kept in this struct. Pointer to the 58 * struct for the current cpu is set up in locore.c. 59 */ 60 struct cpu_info; 61 62 struct cpu_dep { 63 void (*cpu_steal_pages)(void); /* pmap init before mm is on */ 64 int (*cpu_mchk)(caddr_t); /* Machine check handling */ 65 void (*cpu_memerr)(void); /* Memory subsystem errors */ 66 /* Autoconfiguration */ 67 void (*cpu_conf)(void); 68 int (*cpu_clkread)(time_t); /* Read cpu clock time */ 69 void (*cpu_clkwrite)(void); /* Write system time to cpu */ 70 short cpu_vups; /* speed of cpu */ 71 short cpu_scbsz; /* (estimated) size of system control block */ 72 void (*cpu_halt)(void); /* Cpu dependent halt call */ 73 void (*cpu_reboot)(int); /* Cpu dependent reboot call */ 74 void (*cpu_clrf)(void); /* Clear cold/warm start flags */ 75 void (*cpu_subconf)(struct device *);/*config cpu dep. devs */ 76 int cpu_flags; 77 void (*cpu_badaddr)(void); /* cpu-specific badaddr() */ 78 }; 79 80 #if defined(MULTIPROCESSOR) 81 /* 82 * All cpu-dependent calls for multicpu systems goes here. 83 */ 84 struct cpu_mp_dep { 85 void (*cpu_startslave)(struct device *, struct cpu_info *); 86 void (*cpu_send_ipi)(struct device *dest); 87 void (*cpu_cnintr)(void); 88 }; 89 /* 90 * NOTE: This is not bit mask, this is bit _number_. 91 */ 92 #define IPI_START_CNTX 1 /* Start console transmitter, proc out */ 93 #define IPI_SEND_CNCHAR 2 /* Write char to console, kernel printf */ 94 #define IPI_RUNNING 3 /* This CPU just started to run */ 95 #define IPI_TBIA 4 /* Flush the TLB */ 96 #define IPI_DDB 5 /* Jump into the DDB loop */ 97 98 #define IPI_DEST_MASTER -1 /* Destination is mastercpu */ 99 #define IPI_DEST_ALL -2 /* Broadcast */ 100 101 extern struct cpu_mp_dep *mp_dep_call; 102 #endif /* defined(MULTIPROCESSOR) */ 103 104 #define CPU_RAISEIPL 1 /* Must raise IPL until intr is handled */ 105 106 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */ 107 108 struct clockframe { 109 int pc; 110 int ps; 111 }; 112 113 struct cpu_info { 114 /* 115 * Public members. 116 */ 117 struct schedstate_percpu ci_schedstate; /* scheduler state */ 118 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 119 u_long ci_spin_locks; /* # of spin locks held */ 120 u_long ci_simple_locks; /* # of simple locks held */ 121 #endif 122 123 struct proc *ci_curproc; /* current owner of the processor */ 124 125 /* 126 * Private members. 127 */ 128 int ci_want_resched; /* Should change process */ 129 struct device *ci_dev; /* device struct for this cpu */ 130 long ci_exit; /* Page to use while exiting */ 131 #if defined(MULTIPROCESSOR) 132 struct pcb *ci_pcb; /* Idle PCB for this CPU */ 133 vaddr_t ci_istack; /* Interrupt stack location */ 134 int ci_flags; /* See below */ 135 long ci_ipimsgs; /* Sent IPI bits */ 136 struct trapframe *ci_ddb_regs; /* Used by DDB */ 137 #endif 138 }; 139 #define CI_MASTERCPU 1 /* Set if master CPU */ 140 #define CI_RUNNING 2 /* Set when a slave CPU is running */ 141 #define CI_STOPPED 4 /* Stopped (in debugger) */ 142 143 #if defined(MULTIPROCESSOR) 144 /* 145 * "helper" struct. All multicpu systems must have the first two field 146 * of its cpu softc like this. (used in multicpu.c). 147 */ 148 struct cpu_mp_softc { 149 struct device sc_dev; 150 struct cpu_info sc_ci; 151 }; 152 #endif /* defined(MULTIPROCESSOR) */ 153 154 #define curcpu() ((struct cpu_info *)mfpr(PR_SSP)) 155 #define curproc (curcpu()->ci_curproc) 156 #define cpu_number() (curcpu()->ci_dev->dv_unit) 157 #define ci_cpuid ci_dev->dv_unit 158 #define need_resched(ci) {(ci)->ci_want_resched++; mtpr(AST_OK,PR_ASTLVL); } 159 #if defined(MULTIPROCESSOR) 160 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CI_MASTERCPU) 161 162 extern char tramp; 163 #endif 164 165 /* 166 * Notify the current process (p) that it has a signal pending, 167 * process as soon as possible. 168 */ 169 170 #define signotify(p) mtpr(AST_OK,PR_ASTLVL); 171 172 173 /* 174 * Give a profiling tick to the current process when the user profiling 175 * buffer pages are invalid. On the hp300, request an ast to send us 176 * through trap, marking the proc as needing a profiling tick. 177 */ 178 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); } 179 180 /* 181 * This defines the I/O device register space size in pages. 182 */ 183 #define IOSPSZ ((64*1024) / VAX_NBPG) /* 64k == 128 pages */ 184 185 struct device; 186 187 /* Some low-level prototypes */ 188 #if defined(MULTIPROCESSOR) 189 void cpu_slavesetup(struct device *); 190 void cpu_boot_secondary_processors(void); 191 void cpu_send_ipi(int, int); 192 void cpu_handle_ipi(void); 193 #endif 194 int badaddr(caddr_t, int); 195 void cpu_swapin(struct proc *); 196 void dumpconf(void); 197 void dumpsys(void); 198 void swapconf(void); 199 void disk_printtype(int, int); 200 void disk_reallymapin(struct buf *, struct pte *, int, int); 201 vaddr_t vax_map_physmem(paddr_t, int); 202 void vax_unmap_physmem(vaddr_t, int); 203 void ioaccess(vaddr_t, paddr_t, int); 204 void iounaccess(vaddr_t, int); 205 void findcpu(void); 206 int getmajor(void *); 207 #ifdef DDB 208 int kdbrint(int); 209 #endif 210 #endif /* _KERNEL */ 211 #ifdef _STANDALONE 212 void findcpu(void); 213 #endif 214 #endif /* _VAX_CPU_H_ */ 215