cpu.h revision 1.60
1 /* $NetBSD: cpu.h,v 1.60 2001/06/04 21:37:12 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 #define cpu_swapout(p) 56 57 /* 58 * All cpu-dependent info is kept in this struct. Pointer to the 59 * struct for the current cpu is set up in locore.c. 60 */ 61 struct cpu_info; 62 63 struct cpu_dep { 64 void (*cpu_steal_pages)(void); /* pmap init before mm is on */ 65 int (*cpu_mchk)(caddr_t); /* Machine check handling */ 66 void (*cpu_memerr)(void); /* Memory subsystem errors */ 67 /* Autoconfiguration */ 68 void (*cpu_conf)(void); 69 int (*cpu_clkread)(time_t); /* Read cpu clock time */ 70 void (*cpu_clkwrite)(void); /* Write system time to cpu */ 71 short cpu_vups; /* speed of cpu */ 72 short cpu_scbsz; /* (estimated) size of system control block */ 73 void (*cpu_halt)(void); /* Cpu dependent halt call */ 74 void (*cpu_reboot)(int); /* Cpu dependent reboot call */ 75 void (*cpu_clrf)(void); /* Clear cold/warm start flags */ 76 void (*cpu_subconf)(struct device *);/*config cpu dep. devs */ 77 int cpu_flags; 78 void (*cpu_badaddr)(void); /* cpu-specific badaddr() */ 79 }; 80 81 #if defined(MULTIPROCESSOR) 82 /* 83 * All cpu-dependent calls for multicpu systems goes here. 84 */ 85 struct cpu_mp_dep { 86 void (*cpu_startslave)(struct device *, struct cpu_info *); 87 void (*cpu_send_ipi)(struct device *dest); 88 void (*cpu_cnintr)(void); 89 }; 90 /* 91 * NOTE: This is not bit mask, this is bit _number_. 92 */ 93 #define IPI_START_CNTX 1 /* Start console transmitter, proc out */ 94 #define IPI_SEND_CNCHAR 2 /* Write char to console, kernel printf */ 95 #define IPI_RUNNING 3 /* This CPU just started to run */ 96 #define IPI_TBIA 4 /* Flush the TLB */ 97 #define IPI_DDB 5 /* Jump into the DDB loop */ 98 99 #define IPI_DEST_MASTER -1 /* Destination is mastercpu */ 100 #define IPI_DEST_ALL -2 /* Broadcast */ 101 102 extern struct cpu_mp_dep *mp_dep_call; 103 #endif /* defined(MULTIPROCESSOR) */ 104 105 #define CPU_RAISEIPL 1 /* Must raise IPL until intr is handled */ 106 107 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */ 108 109 struct clockframe { 110 int pc; 111 int ps; 112 }; 113 114 struct cpu_info { 115 /* 116 * Public members. 117 */ 118 struct schedstate_percpu ci_schedstate; /* scheduler state */ 119 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 120 u_long ci_spin_locks; /* # of spin locks held */ 121 u_long ci_simple_locks; /* # of simple locks held */ 122 #endif 123 124 struct proc *ci_curproc; /* current owner of the processor */ 125 126 /* 127 * Private members. 128 */ 129 int ci_want_resched; /* Should change process */ 130 struct device *ci_dev; /* device struct for this cpu */ 131 long ci_exit; /* Page to use while exiting */ 132 #if defined(MULTIPROCESSOR) 133 struct pcb *ci_pcb; /* Idle PCB for this CPU */ 134 vaddr_t ci_istack; /* Interrupt stack location */ 135 int ci_flags; /* See below */ 136 long ci_ipimsgs; /* Sent IPI bits */ 137 struct trapframe *ci_ddb_regs; /* Used by DDB */ 138 #endif 139 }; 140 #define CI_MASTERCPU 1 /* Set if master CPU */ 141 #define CI_RUNNING 2 /* Set when a slave CPU is running */ 142 #define CI_STOPPED 4 /* Stopped (in debugger) */ 143 144 #if defined(MULTIPROCESSOR) 145 /* 146 * "helper" struct. All multicpu systems must have the first two field 147 * of its cpu softc like this. (used in multicpu.c). 148 */ 149 struct cpu_mp_softc { 150 struct device sc_dev; 151 struct cpu_info sc_ci; 152 }; 153 #endif /* defined(MULTIPROCESSOR) */ 154 155 #define curcpu() ((struct cpu_info *)mfpr(PR_SSP)) 156 #define curproc (curcpu()->ci_curproc) 157 #define cpu_number() (curcpu()->ci_dev->dv_unit) 158 #define ci_cpuid ci_dev->dv_unit 159 #define need_resched(ci) {(ci)->ci_want_resched++; mtpr(AST_OK,PR_ASTLVL); } 160 #if defined(MULTIPROCESSOR) 161 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CI_MASTERCPU) 162 163 extern char tramp; 164 #endif 165 166 /* 167 * Notify the current process (p) that it has a signal pending, 168 * process as soon as possible. 169 */ 170 171 #define signotify(p) mtpr(AST_OK,PR_ASTLVL); 172 173 174 /* 175 * Give a profiling tick to the current process when the user profiling 176 * buffer pages are invalid. On the hp300, request an ast to send us 177 * through trap, marking the proc as needing a profiling tick. 178 */ 179 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); } 180 181 /* 182 * This defines the I/O device register space size in pages. 183 */ 184 #define IOSPSZ ((64*1024) / VAX_NBPG) /* 64k == 128 pages */ 185 186 struct device; 187 188 /* Some low-level prototypes */ 189 #if defined(MULTIPROCESSOR) 190 void cpu_slavesetup(struct device *); 191 void cpu_boot_secondary_processors(void); 192 void cpu_send_ipi(int, int); 193 void cpu_handle_ipi(void); 194 #endif 195 int badaddr(caddr_t, int); 196 void cpu_swapin(struct proc *); 197 void dumpconf(void); 198 void dumpsys(void); 199 void swapconf(void); 200 void disk_printtype(int, int); 201 void disk_reallymapin(struct buf *, struct pte *, int, int); 202 vaddr_t vax_map_physmem(paddr_t, int); 203 void vax_unmap_physmem(vaddr_t, int); 204 void ioaccess(vaddr_t, paddr_t, int); 205 void iounaccess(vaddr_t, int); 206 void findcpu(void); 207 void child_return(void *); 208 int getmajor(void *); 209 #ifdef DDB 210 int kdbrint(int); 211 #endif 212 #endif /* _KERNEL */ 213 #ifdef _STANDALONE 214 void findcpu(void); 215 #endif 216 #endif /* _VAX_CPU_H_ */ 217
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