cpu.h revision 1.66
1 /* cpu.h,v 1.45.4.7 2008/01/28 18:20:39 matt 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 #if defined(_KERNEL) || defined(_KMEMUSER) 64 65 /* 66 * Kernel-only definitions 67 */ 68 69 #if !defined(_LKM) && defined(_KERNEL_OPT) 70 #include "opt_multiprocessor.h" 71 #include "opt_cpuoptions.h" 72 #include "opt_lockdebug.h" 73 #include "opt_cputypes.h" 74 #endif /* !_LKM && _KERNEL_OPT */ 75 76 #include <arm/cpuconf.h> 77 78 #ifndef _LOCORE 79 #include <machine/frame.h> 80 #include <machine/pcb.h> 81 #endif /* !_LOCORE */ 82 83 #include <arm/armreg.h> 84 85 86 #ifndef _LOCORE 87 /* 1 == use cpu_sleep(), 0 == don't */ 88 extern int cpu_do_powersave; 89 #endif 90 91 #ifdef _LOCORE 92 93 #if defined(_ARM_ARCH_6) 94 #define IRQdisable cprid i 95 #define IRQenable cpsie i 96 #elif defined(__PROG32) 97 #define IRQdisable \ 98 stmfd sp!, {r0} ; \ 99 mrs r0, cpsr ; \ 100 orr r0, r0, #(I32_bit) ; \ 101 msr cpsr_c, r0 ; \ 102 ldmfd sp!, {r0} 103 104 #define IRQenable \ 105 stmfd sp!, {r0} ; \ 106 mrs r0, cpsr ; \ 107 bic r0, r0, #(I32_bit) ; \ 108 msr cpsr_c, r0 ; \ 109 ldmfd sp!, {r0} 110 #else 111 /* Not yet used in 26-bit code */ 112 #endif 113 114 #if defined (PROCESS_ID_IS_CURCPU) 115 #define GET_CURCPU(rX) mrc p15, 0, rX, c13, c0, 4 116 #define GET_CURLWP(rX) GET_CURCPU(rX); ldr rX, [rX, #CI_CURLWP] 117 #define GET_CURPCB(rX) GET_CURCPU(rX); ldr rX, [rX, #CI_CURPCB] 118 #elif defined (PROCESS_ID_IS_CURLWP) 119 #define GET_CURLWP(rX) mrc p15, 0, rX, c13, c0, 4 120 #define GET_CURCPU(rX) GET_CURLWP(rX); ldr rX, [rX, #L_CPU] 121 #define GET_CURPCB(rX) GET_CURLWP(rX); ldr rX, [rX, #L_PCB] 122 #elif !defined(MULTIPROCESSOR) 123 #define GET_CURCPU(rX) ldr rX, =_C_LABEL(cpu_info_store) 124 #define GET_CURLWP(rX) GET_CURCPU(rX); ldr rX, [rX, #CI_CURLWP] 125 #define GET_CURPCB(rX) GET_CURCPU(rX); ldr rX, [rX, #CI_CURPCB] 126 #endif 127 128 #else /* !_LOCORE */ 129 130 #ifdef __PROG32 131 #define IRQdisable __set_cpsr_c(I32_bit, I32_bit); 132 #define IRQenable __set_cpsr_c(I32_bit, 0); 133 #else 134 #define IRQdisable set_r15(R15_IRQ_DISABLE, R15_IRQ_DISABLE); 135 #define IRQenable set_r15(R15_IRQ_DISABLE, 0); 136 #endif 137 138 #endif /* !_LOCORE */ 139 140 #ifndef _LOCORE 141 142 /* All the CLKF_* macros take a struct clockframe * as an argument. */ 143 144 /* 145 * CLKF_USERMODE: Return TRUE/FALSE (1/0) depending on whether the 146 * frame came from USR mode or not. 147 */ 148 #ifdef __PROG32 149 #define CLKF_USERMODE(frame) ((frame->cf_tf.tf_spsr & PSR_MODE) == PSR_USR32_MODE) 150 #else 151 #define CLKF_USERMODE(frame) ((frame->cf_if.if_r15 & R15_MODE) == R15_MODE_USR) 152 #endif 153 154 /* 155 * CLKF_INTR: True if we took the interrupt from inside another 156 * interrupt handler. 157 */ 158 #ifdef __PROG32 159 /* Hack to treat FPE time as interrupt time so we can measure it */ 160 #define CLKF_INTR(frame) \ 161 ((curcpu()->ci_intr_depth > 1) || \ 162 (frame->cf_tf.tf_spsr & PSR_MODE) == PSR_UND32_MODE) 163 #else 164 #define CLKF_INTR(frame) (curcpu()->ci_intr_depth > 1) 165 #endif 166 167 /* 168 * CLKF_PC: Extract the program counter from a clockframe 169 */ 170 #ifdef __PROG32 171 #define CLKF_PC(frame) (frame->cf_tf.tf_pc) 172 #else 173 #define CLKF_PC(frame) (frame->cf_if.if_r15 & R15_PC) 174 #endif 175 176 /* 177 * LWP_PC: Find out the program counter for the given lwp. 178 */ 179 #ifdef __PROG32 180 #define LWP_PC(l) (((struct pcb *)lwp_getpcb(l))->pcb_tf->tf_pc) 181 #else 182 #define LWP_PC(l) (((struct pcb *)lwp_getpcb(l))->pcb_tf->tf_r15 & R15_PC) 183 #endif 184 185 /* 186 * Validate a PC or PSR for a user process. Used by various system calls 187 * that take a context passed by the user and restore it. 188 */ 189 190 #ifdef __PROG32 191 #define VALID_R15_PSR(r15,psr) \ 192 (((psr) & PSR_MODE) == PSR_USR32_MODE && \ 193 ((psr) & (I32_bit | F32_bit)) == 0) 194 #else 195 #define VALID_R15_PSR(r15,psr) \ 196 (((r15) & R15_MODE) == R15_MODE_USR && \ 197 ((r15) & (R15_IRQ_DISABLE | R15_FIQ_DISABLE)) == 0) 198 #endif 199 200 201 202 /* The address of the vector page. */ 203 extern vaddr_t vector_page; 204 #ifdef __PROG32 205 void arm32_vector_init(vaddr_t, int); 206 207 #define ARM_VEC_RESET (1 << 0) 208 #define ARM_VEC_UNDEFINED (1 << 1) 209 #define ARM_VEC_SWI (1 << 2) 210 #define ARM_VEC_PREFETCH_ABORT (1 << 3) 211 #define ARM_VEC_DATA_ABORT (1 << 4) 212 #define ARM_VEC_ADDRESS_EXCEPTION (1 << 5) 213 #define ARM_VEC_IRQ (1 << 6) 214 #define ARM_VEC_FIQ (1 << 7) 215 216 #define ARM_NVEC 8 217 #define ARM_VEC_ALL 0xffffffff 218 #endif 219 220 /* 221 * Per-CPU information. For now we assume one CPU. 222 */ 223 static inline int curcpl(void); 224 static inline void set_curcpl(int); 225 #ifdef __HAVE_FAST_SOFTINTS 226 static inline void cpu_dosoftints(void); 227 #endif 228 229 #include <sys/device_if.h> 230 #include <sys/evcnt.h> 231 #include <sys/cpu_data.h> 232 struct cpu_info { 233 struct cpu_data ci_data; /* MI per-cpu data */ 234 struct device *ci_dev; /* Device corresponding to this CPU */ 235 cpuid_t ci_cpuid; 236 u_int32_t ci_arm_cpuid; /* aggregate CPU id */ 237 u_int32_t ci_arm_cputype; /* CPU type */ 238 u_int32_t ci_arm_cpurev; /* CPU revision */ 239 u_int32_t ci_ctrl; /* The CPU control register */ 240 int ci_cpl; /* current processor level (spl) */ 241 int ci_astpending; /* */ 242 int ci_want_resched; /* resched() was called */ 243 int ci_intr_depth; /* */ 244 struct pcb *ci_curpcb; /* current pcb */ 245 #ifdef __HAVE_FAST_SOFTINTS 246 lwp_t *ci_softlwps[SOFTINT_COUNT]; 247 volatile uint32_t ci_softints; 248 #endif 249 #if !defined(PROCESS_ID_IS_CURLWP) 250 lwp_t *ci_curlwp; /* current lwp */ 251 #endif 252 #ifdef _ARM_ARCH_6 253 uint32_t ci_ccnt_freq; /* cycle count frequency */ 254 #endif 255 struct evcnt ci_arm700bugcount; 256 int32_t ci_mtx_count; 257 int ci_mtx_oldspl; 258 uint32_t ci_vfp_id; 259 #ifdef MULTIPROCESSOR 260 MP_CPU_INFO_MEMBERS 261 #endif 262 }; 263 264 #ifndef MULTIPROCESSOR 265 extern struct cpu_info cpu_info_store; 266 #if defined(PROCESS_ID_IS_CURLWP) 267 static inline struct lwp * 268 _curlwp(void) 269 { 270 struct lwp *l; 271 __asm("mrc\tp15, 0, %0, c13, c0, 4" : "=r"(l)); 272 return l; 273 } 274 275 static inline void 276 _curlwp_set(struct lwp *l) 277 { 278 __asm("mcr\tp15, 0, %0, c13, c0, 4" : "=r"(l)); 279 } 280 281 #define curlwp (_curlwp()) 282 static inline struct cpu_info * 283 curcpu(void) 284 { 285 return curlwp->l_cpu; 286 } 287 #elif defined(PROCESS_ID_IS_CURCPU) 288 static inline struct cpu_info * 289 curcpu(void) 290 { 291 struct cpu_info *ci; 292 __asm("mrc\tp15, 0, %0, c13, c0, 4" : "=r"(ci)); 293 return ci; 294 } 295 #else 296 #define curcpu() (&cpu_info_store) 297 #endif /* !PROCESS_ID_IS_CURCPU && !PROCESS_ID_IS_CURLWP */ 298 #ifndef curpcb 299 #define curpcb (curcpu()->ci_curpcb) 300 #endif 301 #ifndef curlwp 302 #define curlwp (curcpu()->ci_curlwp) 303 #endif 304 #define cpu_number() 0 305 #define LWP0_CPU_INFO (&cpu_info_store) 306 #endif /* !MULTIPROCESSOR */ 307 308 static inline int 309 curcpl(void) 310 { 311 return curcpu()->ci_cpl; 312 } 313 314 static inline void 315 set_curcpl(int pri) 316 { 317 curcpu()->ci_cpl = pri; 318 } 319 320 #ifdef __HAVE_FAST_SOFTINTS 321 void dosoftints(void); 322 static inline void 323 cpu_dosoftints(void) 324 { 325 struct cpu_info * const ci = curcpu(); 326 if (ci->ci_intr_depth == 0 && (ci->ci_softints >> ci->ci_cpl) > 0) 327 dosoftints(); 328 } 329 #endif 330 331 #ifdef __PROG32 332 void cpu_proc_fork(struct proc *, struct proc *); 333 #else 334 #define cpu_proc_fork(p1, p2) 335 #endif 336 337 /* 338 * Scheduling glue 339 */ 340 341 #define setsoftast() (curcpu()->ci_astpending = 1) 342 343 /* 344 * Notify the current process (p) that it has a signal pending, 345 * process as soon as possible. 346 */ 347 348 #define cpu_signotify(l) setsoftast() 349 350 /* 351 * Give a profiling tick to the current process when the user profiling 352 * buffer pages are invalid. On the i386, request an ast to send us 353 * through trap(), marking the proc as needing a profiling tick. 354 */ 355 #define cpu_need_proftick(l) ((l)->l_pflag |= LP_OWEUPC, setsoftast()) 356 357 #ifndef acorn26 358 /* 359 * cpu device glue (belongs in cpuvar.h) 360 */ 361 362 struct device; 363 void cpu_attach(struct device *); 364 #endif 365 366 /* 367 * Random cruft 368 */ 369 370 struct lwp; 371 372 /* locore.S */ 373 void atomic_set_bit(u_int *, u_int); 374 void atomic_clear_bit(u_int *, u_int); 375 376 /* cpuswitch.S */ 377 struct pcb; 378 void savectx(struct pcb *); 379 380 /* ast.c */ 381 void userret(register struct lwp *); 382 383 /* *_machdep.c */ 384 void bootsync(void); 385 386 /* fault.c */ 387 int badaddr_read(void *, size_t, void *); 388 389 /* syscall.c */ 390 void swi_handler(trapframe_t *); 391 392 /* arm_machdep.c */ 393 void ucas_ras_check(trapframe_t *); 394 395 /* vfp_init.c */ 396 void vfp_attach(void); 397 void vfp_discardcontext(void); 398 void vfp_savecontext(void); 399 extern const pcu_ops_t arm_vfp_ops; 400 401 #endif /* !_LOCORE */ 402 403 #endif /* _KERNEL */ 404 405 #endif /* !_ARM_CPU_H_ */ 406
Indexes created Fri Sep 26 08:10:20 GMT 2025