cpu.h revision 1.16
1 /* $NetBSD: cpu.h,v 1.16 2001/11/09 17:58:00 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1994-1996 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * This code is derived from software written for Brini by Mark Brinicombe 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Brini. 21 * 4. The name of the company nor the name of the author may be used to 22 * endorse or promote products derived from this software without specific 23 * prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 29 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 30 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * RiscBSD kernel project 38 * 39 * cpu.h 40 * 41 * CPU specific symbols 42 * 43 * Created : 18/09/94 44 * 45 * Based on kate/katelib/arm6.h 46 */ 47 48 #ifndef _ARM_CPU_H_ 49 #define _ARM_CPU_H_ 50 51 /* 52 * User-visible definitions 53 */ 54 55 /* CTL_MACHDEP definitions. */ 56 #define CPU_DEBUG 1 /* int: misc kernel debug control */ 57 #define CPU_BOOTED_DEVICE 2 /* string: device we booted from */ 58 #define CPU_BOOTED_KERNEL 3 /* string: kernel we booted */ 59 #define CPU_CONSDEV 4 /* struct: dev_t of our console */ 60 #define CPU_MAXID 5 /* number of valid machdep ids */ 61 62 #define CTL_MACHDEP_NAMES { \ 63 { 0, 0 }, \ 64 { "debug", CTLTYPE_INT }, \ 65 { "booted_device", CTLTYPE_STRING }, \ 66 { "booted_kernel", CTLTYPE_STRING }, \ 67 { "console_device", CTLTYPE_STRUCT }, \ 68 } 69 70 #ifdef _KERNEL 71 72 /* 73 * Kernel-only definitions 74 */ 75 76 #ifndef _LKM 77 #include "opt_cputypes.h" 78 #include "opt_lockdebug.h" 79 #include "opt_progmode.h" 80 81 #if defined(PROG26) && defined(PROG32) 82 #error "26-bit and 32-bit CPU support are not compatible" 83 #endif 84 #if !defined(PROG26) && !defined(PROG32) 85 #error "Support for at least one CPU type must be configured into the kernel" 86 #endif 87 88 #endif /* !_LKM */ 89 90 91 #include <machine/intr.h> 92 #ifndef _LOCORE 93 #include <sys/user.h> 94 #include <machine/frame.h> 95 #include <machine/pcb.h> 96 #endif /* !_LOCORE */ 97 98 #include <arm/armreg.h> 99 100 #ifdef PROG32 101 #ifdef _LOCORE 102 #define IRQdisable \ 103 stmfd sp!, {r0} ; \ 104 mrs r0, cpsr_all ; \ 105 orr r0, r0, #(I32_bit) ; \ 106 msr cpsr_all, r0 ; \ 107 ldmfd sp!, {r0} 108 109 #define IRQenable \ 110 stmfd sp!, {r0} ; \ 111 mrs r0, cpsr_all ; \ 112 bic r0, r0, #(I32_bit) ; \ 113 msr cpsr_all, r0 ; \ 114 ldmfd sp!, {r0} 115 116 #else 117 #define IRQdisable SetCPSR(I32_bit, I32_bit); 118 #define IRQenable SetCPSR(I32_bit, 0); 119 #endif /* _LOCORE */ 120 #endif 121 122 #ifndef _LOCORE 123 124 /* All the CLKF_* macros take a struct clockframe * as an argument. */ 125 126 /* 127 * CLKF_USERMODE: Return TRUE/FALSE (1/0) depending on whether the 128 * frame came from USR mode or not. 129 */ 130 #ifdef PROG32 131 #define CLKF_USERMODE(frame) ((frame->if_spsr & PSR_MODE) == PSR_USR32_MODE) 132 #else 133 #define CLKF_USERMODE(frame) ((frame->if_r15 & R15_MODE) == R15_MODE_USR) 134 #endif 135 136 /* 137 * CLKF_BASEPRI: True if we were at spl0 before the interrupt 138 * 139 * This needs straighening, prob is the frame does not have info on the 140 * priority a guess that needs trying is (current_spl_level == SPL0) 141 */ 142 #define CLKF_BASEPRI(frame) CLKF_USERMODE(frame) 143 144 /* 145 * CLKF_INTR: True if we took the interrupt from inside another 146 * interrupt handler. 147 */ 148 extern int current_intr_depth; 149 #ifdef PROG32 150 /* Hack to treat FPE time as interrupt time so we can measure it */ 151 #define CLKF_INTR(frame) \ 152 ((current_intr_depth > 1) || \ 153 (frame->if_spsr & PSR_MODE) == PSR_UND32_MODE) 154 #else 155 #define CLKF_INTR(frame) (current_intr_depth > 1) 156 #endif 157 158 /* 159 * CLKF_PC: Extract the program counter from a clockframe 160 */ 161 #ifdef PROG32 162 #define CLKF_PC(frame) (frame->if_pc) 163 #else 164 #define CLKF_PC(frame) (frame->if_r15 & R15_PC) 165 #endif 166 167 /* 168 * PROC_PC: Find out the program counter for the given process. 169 */ 170 #ifdef PROG32 171 #define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_pc) 172 #else 173 #define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_r15 & R15_PC) 174 #endif 175 176 177 /* 178 * Per-CPU information. For now we assume one CPU. 179 */ 180 181 #include <sys/sched.h> 182 struct cpu_info { 183 struct schedstate_percpu ci_schedstate; /* scheduler state */ 184 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 185 u_long ci_spin_locks; /* # of spin locks held */ 186 u_long ci_simple_locks; /* # of simple locks held */ 187 #endif 188 }; 189 190 extern struct cpu_info cpu_info_store; 191 #define curcpu() (&cpu_info_store) 192 #define cpu_number() 0 193 194 195 /* 196 * Scheduling glue 197 */ 198 199 extern int astpending; 200 #define setsoftast() (astpending = 1) 201 202 /* 203 * Notify the current process (p) that it has a signal pending, 204 * process as soon as possible. 205 */ 206 207 #define signotify(p) setsoftast() 208 209 #define cpu_wait(p) /* nothing */ 210 211 /* 212 * Preempt the current process if in interrupt from user mode, 213 * or after the current trap/syscall if in system mode. 214 */ 215 int want_resched; /* resched() was called */ 216 #define need_resched(ci) (want_resched = 1, setsoftast()) 217 218 /* 219 * Give a profiling tick to the current process when the user profiling 220 * buffer pages are invalid. On the i386, request an ast to send us 221 * through trap(), marking the proc as needing a profiling tick. 222 */ 223 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, setsoftast()) 224 225 #ifndef arm26 226 /* 227 * cpu device glue (belongs in cpuvar.h) 228 */ 229 230 struct device; 231 void cpu_attach __P((struct device *)); 232 #endif 233 234 235 /* 236 * Random cruft 237 */ 238 239 /* locore.S */ 240 void atomic_set_bit __P((u_int *address, u_int setmask)); 241 void atomic_clear_bit __P((u_int *address, u_int clearmask)); 242 243 /* cpuswitch.S */ 244 struct pcb; 245 void savectx __P((struct pcb *pcb)); 246 247 #ifndef arm26 248 /* ast.c */ 249 void userret __P((register struct proc *p)); 250 #endif 251 252 /* machdep.h */ 253 void bootsync __P((void)); 254 255 /* fault.c */ 256 int badaddr_read __P((void *, size_t, void *)); 257 258 #endif /* !_LOCORE */ 259 260 #endif /* _KERNEL */ 261 262 #endif /* !_ARM_CPU_H_ */ 263 264 /* End of cpu.h */ 265
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