cpu.h revision 1.21
1 /* $NetBSD: cpu.h,v 1.21 1998/02/16 03:59:57 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 41 * 42 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 43 */ 44 45 #ifndef _ALPHA_CPU_H_ 46 #define _ALPHA_CPU_H_ 47 48 /* 49 * Exported definitions unique to Alpha cpu support. 50 */ 51 52 #include <machine/frame.h> 53 54 /* 55 * definitions of cpu-dependent requirements 56 * referenced in generic code 57 */ 58 #define cpu_wait(p) /* nothing */ 59 60 /* 61 * Arguments to hardclock and gatherstats encapsulate the previous 62 * machine state in an opaque clockframe. One the Alpha, we use 63 * what we push on an interrupt (a trapframe). 64 */ 65 struct clockframe { 66 struct trapframe cf_tf; 67 }; 68 #define CLKF_USERMODE(framep) \ 69 (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_USERMODE) != 0) 70 #define CLKF_BASEPRI(framep) \ 71 (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_IPL_MASK) == 0) 72 #define CLKF_PC(framep) ((framep)->cf_tf.tf_regs[FRAME_PC]) 73 /* 74 * XXX No way to accurately tell if we were in interrupt mode before taking 75 * clock interrupt. 76 */ 77 #define CLKF_INTR(framep) (0) 78 79 /* 80 * Preempt the current process if in interrupt from user mode, 81 * or after the current trap/syscall if in system mode. 82 */ 83 #define need_resched() { want_resched = 1; aston(); } 84 85 /* 86 * Give a profiling tick to the current process when the user profiling 87 * buffer pages are invalid. On the hp300, request an ast to send us 88 * through trap, marking the proc as needing a profiling tick. 89 */ 90 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 91 92 /* 93 * Notify the current process (p) that it has a signal pending, 94 * process as soon as possible. 95 */ 96 #define signotify(p) aston() 97 98 #define aston() (astpending = 1) 99 100 #ifdef _KERNEL 101 u_int64_t astpending; /* need to trap before returning to user mode */ 102 u_int64_t want_resched; /* resched() was called */ 103 #endif 104 105 106 /* 107 * CTL_MACHDEP definitions. 108 */ 109 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 110 #define CPU_ROOT_DEVICE 2 /* string: root device name */ 111 #define CPU_UNALIGNED_PRINT 3 /* int: print unaligned accesses */ 112 #define CPU_UNALIGNED_FIX 4 /* int: fix unaligned accesses */ 113 #define CPU_UNALIGNED_SIGBUS 5 /* int: SIGBUS unaligned accesses */ 114 #define CPU_BOOTED_KERNEL 6 /* string: booted kernel name */ 115 #define CPU_MAXID 7 /* 6 valid machdep IDs */ 116 117 #define CTL_MACHDEP_NAMES { \ 118 { 0, 0 }, \ 119 { "console_device", CTLTYPE_STRUCT }, \ 120 { "root_device", CTLTYPE_STRING }, \ 121 { "unaligned_print", CTLTYPE_INT }, \ 122 { "unaligned_fix", CTLTYPE_INT }, \ 123 { "unaligned_sigbus", CTLTYPE_INT }, \ 124 { "booted_kernel", CTLTYPE_STRING }, \ 125 } 126 127 #ifdef _KERNEL 128 129 struct pcb; 130 struct proc; 131 struct reg; 132 struct rpb; 133 struct trapframe; 134 135 extern int cold; 136 extern struct proc *fpcurproc; 137 extern struct rpb *hwrpb; 138 extern volatile int mc_expected, mc_received; 139 140 void XentArith __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */ 141 void XentIF __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */ 142 void XentInt __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */ 143 void XentMM __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */ 144 void XentRestart __P((void)); /* MAGIC */ 145 void XentSys __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */ 146 void XentUna __P((u_int64_t, u_int64_t, u_int64_t)); /* MAGIC */ 147 void alpha_init __P((u_long, u_long, u_long, u_long, u_long)); 148 int alpha_pa_access __P((u_long)); 149 void ast __P((struct trapframe *)); 150 int badaddr __P((void *, size_t)); 151 int badaddr_read __P((void *, size_t, void *)); 152 void child_return __P((struct proc *p)); 153 void configure __P((void)); 154 u_int64_t console_restart __P((u_int64_t, u_int64_t, u_int64_t)); 155 void do_sir __P((void)); 156 void dumpconf __P((void)); 157 void exception_return __P((void)); /* MAGIC */ 158 void frametoreg __P((struct trapframe *, struct reg *)); 159 long fswintrberr __P((void)); /* MAGIC */ 160 void init_bootstrap_console __P((void)); 161 void init_prom_interface __P((struct rpb *)); 162 void interrupt 163 __P((unsigned long, unsigned long, unsigned long, struct trapframe *)); 164 void machine_check 165 __P((unsigned long, struct trapframe *, unsigned long, unsigned long)); 166 u_int64_t hwrpb_checksum __P((void)); 167 void hwrpb_restart_setup __P((void)); 168 void regdump __P((struct trapframe *)); 169 void regtoframe __P((struct reg *, struct trapframe *)); 170 void savectx __P((struct pcb *)); 171 void set_iointr __P((void (*)(void *, unsigned long))); 172 void switch_exit __P((struct proc *)); /* MAGIC */ 173 void switch_trampoline __P((void)); /* MAGIC */ 174 void syscall __P((u_int64_t, struct trapframe *)); 175 void trap __P((unsigned long, unsigned long, unsigned long, unsigned long, 176 struct trapframe *)); 177 178 #endif /* _KERNEL */ 179 180 #endif /* _ALPHA_CPU_H_ */ 181
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