cpu.h revision 1.48
1 /* $NetBSD: cpu.h,v 1.48 2007/12/11 17:02:32 ad 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_POWERSAVE 5 /* int: use CPU powersave mode */ 61 #define CPU_MAXID 6 /* number of valid machdep ids */ 62 63 #define CTL_MACHDEP_NAMES { \ 64 { 0, 0 }, \ 65 { "debug", CTLTYPE_INT }, \ 66 { "booted_device", CTLTYPE_STRING }, \ 67 { "booted_kernel", CTLTYPE_STRING }, \ 68 { "console_device", CTLTYPE_STRUCT }, \ 69 { "powersave", CTLTYPE_INT }, \ 70 } 71 72 #ifdef _KERNEL 73 74 /* 75 * Kernel-only definitions 76 */ 77 78 #ifndef _LKM 79 #include "opt_multiprocessor.h" 80 #include "opt_lockdebug.h" 81 #endif /* !_LKM */ 82 83 #include <arm/cpuconf.h> 84 85 #include <machine/intr.h> 86 #ifndef _LOCORE 87 #include <sys/user.h> 88 #include <machine/frame.h> 89 #include <machine/pcb.h> 90 #endif /* !_LOCORE */ 91 92 #include <arm/armreg.h> 93 94 #ifndef _LOCORE 95 /* 1 == use cpu_sleep(), 0 == don't */ 96 extern int cpu_do_powersave; 97 #endif 98 99 #ifdef __PROG32 100 #ifdef _LOCORE 101 #define IRQdisable \ 102 stmfd sp!, {r0} ; \ 103 mrs r0, cpsr ; \ 104 orr r0, r0, #(I32_bit) ; \ 105 msr cpsr_c, r0 ; \ 106 ldmfd sp!, {r0} 107 108 #define IRQenable \ 109 stmfd sp!, {r0} ; \ 110 mrs r0, cpsr ; \ 111 bic r0, r0, #(I32_bit) ; \ 112 msr cpsr_c, r0 ; \ 113 ldmfd sp!, {r0} 114 115 #else 116 #define IRQdisable __set_cpsr_c(I32_bit, I32_bit); 117 #define IRQenable __set_cpsr_c(I32_bit, 0); 118 #endif /* _LOCORE */ 119 #else 120 #define IRQdisable set_r15(R15_IRQ_DISABLE, R15_IRQ_DISABLE); 121 #define IRQenable set_r15(R15_IRQ_DISABLE, 0); 122 #endif 123 124 #ifndef _LOCORE 125 126 /* All the CLKF_* macros take a struct clockframe * as an argument. */ 127 128 /* 129 * CLKF_USERMODE: Return TRUE/FALSE (1/0) depending on whether the 130 * frame came from USR mode or not. 131 */ 132 #ifdef __PROG32 133 #define CLKF_USERMODE(frame) ((frame->cf_if.if_spsr & PSR_MODE) == PSR_USR32_MODE) 134 #else 135 #define CLKF_USERMODE(frame) ((frame->cf_if.if_r15 & R15_MODE) == R15_MODE_USR) 136 #endif 137 138 /* 139 * CLKF_INTR: True if we took the interrupt from inside another 140 * interrupt handler. 141 */ 142 extern int current_intr_depth; 143 #ifdef __PROG32 144 /* Hack to treat FPE time as interrupt time so we can measure it */ 145 #define CLKF_INTR(frame) \ 146 ((current_intr_depth > 1) || \ 147 (frame->cf_if.if_spsr & PSR_MODE) == PSR_UND32_MODE) 148 #else 149 #define CLKF_INTR(frame) (current_intr_depth > 1) 150 #endif 151 152 /* 153 * CLKF_PC: Extract the program counter from a clockframe 154 */ 155 #ifdef __PROG32 156 #define CLKF_PC(frame) (frame->cf_if.if_pc) 157 #else 158 #define CLKF_PC(frame) (frame->cf_if.if_r15 & R15_PC) 159 #endif 160 161 /* 162 * LWP_PC: Find out the program counter for the given lwp. 163 */ 164 #ifdef __PROG32 165 #define LWP_PC(l) ((l)->l_addr->u_pcb.pcb_tf->tf_pc) 166 #else 167 #define LWP_PC(l) ((l)->l_addr->u_pcb.pcb_tf->tf_r15 & R15_PC) 168 #endif 169 170 /* 171 * Validate a PC or PSR for a user process. Used by various system calls 172 * that take a context passed by the user and restore it. 173 */ 174 175 #ifdef __PROG32 176 #define VALID_R15_PSR(r15,psr) \ 177 (((psr) & PSR_MODE) == PSR_USR32_MODE && \ 178 ((psr) & (I32_bit | F32_bit)) == 0) 179 #else 180 #define VALID_R15_PSR(r15,psr) \ 181 (((r15) & R15_MODE) == R15_MODE_USR && \ 182 ((r15) & (R15_IRQ_DISABLE | R15_FIQ_DISABLE)) == 0) 183 #endif 184 185 186 187 /* The address of the vector page. */ 188 extern vaddr_t vector_page; 189 #ifdef __PROG32 190 void arm32_vector_init(vaddr_t, int); 191 192 #define ARM_VEC_RESET (1 << 0) 193 #define ARM_VEC_UNDEFINED (1 << 1) 194 #define ARM_VEC_SWI (1 << 2) 195 #define ARM_VEC_PREFETCH_ABORT (1 << 3) 196 #define ARM_VEC_DATA_ABORT (1 << 4) 197 #define ARM_VEC_ADDRESS_EXCEPTION (1 << 5) 198 #define ARM_VEC_IRQ (1 << 6) 199 #define ARM_VEC_FIQ (1 << 7) 200 201 #define ARM_NVEC 8 202 #define ARM_VEC_ALL 0xffffffff 203 #endif 204 205 /* 206 * Per-CPU information. For now we assume one CPU. 207 */ 208 209 #include <sys/device.h> 210 #include <sys/cpu_data.h> 211 struct cpu_info { 212 struct cpu_data ci_data; /* MI per-cpu data */ 213 struct device *ci_dev; /* Device corresponding to this CPU */ 214 cpuid_t ci_cpuid; 215 u_int32_t ci_arm_cpuid; /* aggregate CPU id */ 216 u_int32_t ci_arm_cputype; /* CPU type */ 217 u_int32_t ci_arm_cpurev; /* CPU revision */ 218 u_int32_t ci_ctrl; /* The CPU control register */ 219 struct evcnt ci_arm700bugcount; 220 int32_t ci_mtx_count; 221 int ci_mtx_oldspl; 222 int ci_want_resched; 223 int ci_idepth; 224 #ifdef MULTIPROCESSOR 225 MP_CPU_INFO_MEMBERS 226 #endif 227 }; 228 229 #ifndef MULTIPROCESSOR 230 extern struct cpu_info cpu_info_store; 231 #define curcpu() (&cpu_info_store) 232 #define cpu_number() 0 233 #endif 234 235 #ifdef __PROG32 236 void cpu_proc_fork(struct proc *, struct proc *); 237 #else 238 #define cpu_proc_fork(p1, p2) 239 #endif 240 241 /* 242 * Scheduling glue 243 */ 244 245 extern int astpending; 246 #define setsoftast() (astpending = 1) 247 248 /* 249 * Notify the current process (p) that it has a signal pending, 250 * process as soon as possible. 251 */ 252 253 #define cpu_signotify(l) setsoftast() 254 255 /* 256 * Give a profiling tick to the current process when the user profiling 257 * buffer pages are invalid. On the i386, request an ast to send us 258 * through trap(), marking the proc as needing a profiling tick. 259 */ 260 #define cpu_need_proftick(l) ((l)->l_pflag |= LP_OWEUPC, setsoftast()) 261 262 #ifndef acorn26 263 /* 264 * cpu device glue (belongs in cpuvar.h) 265 */ 266 267 struct device; 268 void cpu_attach(struct device *); 269 #endif 270 271 /* 272 * Random cruft 273 */ 274 275 struct lwp; 276 277 /* locore.S */ 278 void atomic_set_bit(u_int *, u_int); 279 void atomic_clear_bit(u_int *, u_int); 280 281 /* cpuswitch.S */ 282 struct pcb; 283 void savectx(struct pcb *); 284 285 /* ast.c */ 286 void userret(register struct lwp *); 287 288 /* machdep.h */ 289 void bootsync(void); 290 291 /* fault.c */ 292 int badaddr_read(void *, size_t, void *); 293 294 /* syscall.c */ 295 void swi_handler(trapframe_t *); 296 297 #endif /* !_LOCORE */ 298 299 #endif /* _KERNEL */ 300 301 #endif /* !_ARM_CPU_H_ */ 302 303 /* End of cpu.h */ 304
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