1 /* $NetBSD: cpu.h,v 1.27 2002/05/08 22:22:46 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_lockdebug.h" 78 #endif /* !_LKM */ 79 80 #include <arm/cpuconf.h> 81 82 #include <machine/intr.h> 83 #ifndef _LOCORE 84 #include <sys/user.h> 85 #include <machine/frame.h> 86 #include <machine/pcb.h> 87 #endif /* !_LOCORE */ 88 89 #include <arm/armreg.h> 90 91 #ifdef __PROG32 92 #ifdef _LOCORE 93 #define IRQdisable \ 94 stmfd sp!, {r0} ; \ 95 mrs r0, cpsr_all ; \ 96 orr r0, r0, #(I32_bit) ; \ 97 msr cpsr_all, r0 ; \ 98 ldmfd sp!, {r0} 99 100 #define IRQenable \ 101 stmfd sp!, {r0} ; \ 102 mrs r0, cpsr_all ; \ 103 bic r0, r0, #(I32_bit) ; \ 104 msr cpsr_all, r0 ; \ 105 ldmfd sp!, {r0} 106 107 #else 108 #define IRQdisable SetCPSR(I32_bit, I32_bit); 109 #define IRQenable SetCPSR(I32_bit, 0); 110 #endif /* _LOCORE */ 111 #endif 112 113 #ifndef _LOCORE 114 115 /* All the CLKF_* macros take a struct clockframe * as an argument. */ 116 117 /* 118 * CLKF_USERMODE: Return TRUE/FALSE (1/0) depending on whether the 119 * frame came from USR mode or not. 120 */ 121 #ifdef __PROG32 122 #define CLKF_USERMODE(frame) ((frame->if_spsr & PSR_MODE) == PSR_USR32_MODE) 123 #else 124 #define CLKF_USERMODE(frame) ((frame->if_r15 & R15_MODE) == R15_MODE_USR) 125 #endif 126 127 /* 128 * CLKF_BASEPRI: True if we were at spl0 before the interrupt. 129 * 130 * This is hard-wired to 0 on the ARM, since spllowersoftclock() might 131 * not actually be able to unblock the interrupt, which would cause us 132 * to run the softclock interrupts with hardclock blocked. 133 */ 134 #define CLKF_BASEPRI(frame) 0 135 136 /* 137 * CLKF_INTR: True if we took the interrupt from inside another 138 * interrupt handler. 139 */ 140 extern int current_intr_depth; 141 #ifdef __PROG32 142 /* Hack to treat FPE time as interrupt time so we can measure it */ 143 #define CLKF_INTR(frame) \ 144 ((current_intr_depth > 1) || \ 145 (frame->if_spsr & PSR_MODE) == PSR_UND32_MODE) 146 #else 147 #define CLKF_INTR(frame) (current_intr_depth > 1) 148 #endif 149 150 /* 151 * CLKF_PC: Extract the program counter from a clockframe 152 */ 153 #ifdef __PROG32 154 #define CLKF_PC(frame) (frame->if_pc) 155 #else 156 #define CLKF_PC(frame) (frame->if_r15 & R15_PC) 157 #endif 158 159 /* 160 * PROC_PC: Find out the program counter for the given process. 161 */ 162 #ifdef __PROG32 163 #define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_pc) 164 #else 165 #define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_r15 & R15_PC) 166 #endif 167 168 /* The address of the vector page. */ 169 extern vaddr_t vector_page; 170 #ifdef __PROG32 171 void arm32_vector_init(vaddr_t, int); 172 173 #define ARM_VEC_RESET (1 << 0) 174 #define ARM_VEC_UNDEFINED (1 << 1) 175 #define ARM_VEC_SWI (1 << 2) 176 #define ARM_VEC_PREFETCH_ABORT (1 << 3) 177 #define ARM_VEC_DATA_ABORT (1 << 4) 178 #define ARM_VEC_ADDRESS_EXCEPTION (1 << 5) 179 #define ARM_VEC_IRQ (1 << 6) 180 #define ARM_VEC_FIQ (1 << 7) 181 182 #define ARM_NVEC 8 183 #define ARM_VEC_ALL 0xffffffff 184 #endif 185 186 /* 187 * Per-CPU information. For now we assume one CPU. 188 */ 189 190 #include <sys/device.h> 191 #include <sys/sched.h> 192 struct cpu_info { 193 struct schedstate_percpu ci_schedstate; /* scheduler state */ 194 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 195 u_long ci_spin_locks; /* # of spin locks held */ 196 u_long ci_simple_locks; /* # of simple locks held */ 197 #endif 198 struct device *ci_dev; /* Device corresponding to this CPU */ 199 u_int32_t ci_cpuid; /* aggregate CPU id */ 200 u_int32_t ci_cputype; /* CPU type */ 201 u_int32_t ci_cpurev; /* CPU revision */ 202 u_int32_t ci_ctrl; /* The CPU control register */ 203 struct evcnt ci_arm700bugcount; 204 }; 205 206 extern struct cpu_info cpu_info_store; 207 #define curcpu() (&cpu_info_store) 208 #define cpu_number() 0 209 210 211 /* 212 * Scheduling glue 213 */ 214 215 extern int astpending; 216 #define setsoftast() (astpending = 1) 217 218 /* 219 * Notify the current process (p) that it has a signal pending, 220 * process as soon as possible. 221 */ 222 223 #define signotify(p) setsoftast() 224 225 #define cpu_wait(p) /* nothing */ 226 227 /* 228 * Preempt the current process if in interrupt from user mode, 229 * or after the current trap/syscall if in system mode. 230 */ 231 int want_resched; /* resched() was called */ 232 #define need_resched(ci) (want_resched = 1, setsoftast()) 233 234 /* 235 * Give a profiling tick to the current process when the user profiling 236 * buffer pages are invalid. On the i386, request an ast to send us 237 * through trap(), marking the proc as needing a profiling tick. 238 */ 239 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, setsoftast()) 240 241 #ifndef acorn26 242 /* 243 * cpu device glue (belongs in cpuvar.h) 244 */ 245 246 struct device; 247 void cpu_attach __P((struct device *)); 248 #endif 249 250 251 /* 252 * Random cruft 253 */ 254 255 /* locore.S */ 256 void atomic_set_bit __P((u_int *address, u_int setmask)); 257 void atomic_clear_bit __P((u_int *address, u_int clearmask)); 258 259 /* cpuswitch.S */ 260 struct pcb; 261 void savectx __P((struct pcb *pcb)); 262 263 /* ast.c */ 264 void userret __P((register struct proc *p)); 265 266 /* machdep.h */ 267 void bootsync __P((void)); 268 269 /* fault.c */ 270 int badaddr_read __P((void *, size_t, void *)); 271 272 /* syscall.c */ 273 void swi_handler __P((trapframe_t *)); 274 275 #endif /* !_LOCORE */ 276 277 #endif /* _KERNEL */ 278 279 #endif /* !_ARM_CPU_H_ */ 280 281 /* End of cpu.h */ 282