Annotation of sys/arch/arm/include/cpu.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: cpu.h,v 1.18 2007/08/14 15:18:07 deraadt Exp $ */
! 2: /* $NetBSD: cpu.h,v 1.34 2003/06/23 11:01:08 martin Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1994-1996 Mark Brinicombe.
! 6: * Copyright (c) 1994 Brini.
! 7: * All rights reserved.
! 8: *
! 9: * This code is derived from software written for Brini by Mark Brinicombe
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by Brini.
! 22: * 4. The name of the company nor the name of the author may be used to
! 23: * endorse or promote products derived from this software without specific
! 24: * prior written permission.
! 25: *
! 26: * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
! 27: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
! 28: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 29: * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
! 30: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 31: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 32: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 36: * SUCH DAMAGE.
! 37: *
! 38: * RiscBSD kernel project
! 39: *
! 40: * cpu.h
! 41: *
! 42: * CPU specific symbols
! 43: *
! 44: * Created : 18/09/94
! 45: *
! 46: * Based on kate/katelib/arm6.h
! 47: */
! 48:
! 49: #ifndef _ARM_CPU_H_
! 50: #define _ARM_CPU_H_
! 51:
! 52: /*
! 53: * User-visible definitions
! 54: */
! 55:
! 56: /* CTL_MACHDEP definitions. */
! 57: #define CPU_DEBUG 1 /* int: misc kernel debug control */
! 58: #define CPU_BOOTED_DEVICE 2 /* string: device we booted from */
! 59: #define CPU_BOOTED_KERNEL 3 /* string: kernel we booted */
! 60: #define CPU_CONSDEV 4 /* struct: dev_t of our console */
! 61: #define CPU_POWERSAVE 5 /* int: use CPU powersave mode */
! 62: #define CPU_ALLOWAPERTURE 6 /* int: allow mmap of /dev/xf86 */
! 63: #define CPU_APMWARN 7 /* APM battery warning percentage */
! 64: #define CPU_KBDRESET 8 /* int: console keyboard reset */
! 65: /* 9 formerly int: CPU_ZTSRAWMODE */
! 66: /* 10 formerly struct: CPU_ZTSSCALE */
! 67: #define CPU_MAXSPEED 11 /* int: number of valid machdep ids */
! 68: #define CPU_LIDSUSPEND 12 /* int: closing lid causes suspend */
! 69: #define CPU_MAXID 13 /* number of valid machdep ids */
! 70:
! 71: #define CTL_MACHDEP_NAMES { \
! 72: { 0, 0 }, \
! 73: { "debug", CTLTYPE_INT }, \
! 74: { "booted_device", CTLTYPE_STRING }, \
! 75: { "booted_kernel", CTLTYPE_STRING }, \
! 76: { "console_device", CTLTYPE_STRUCT }, \
! 77: { "powersave", CTLTYPE_INT }, \
! 78: { "allowaperture", CTLTYPE_INT }, \
! 79: { "apmwarn", CTLTYPE_INT }, \
! 80: { "kbdreset", CTLTYPE_INT }, \
! 81: { 0, 0 }, \
! 82: { 0, 0 }, \
! 83: { "maxspeed", CTLTYPE_INT }, \
! 84: { "lidsuspend", CTLTYPE_INT } \
! 85: }
! 86:
! 87: #ifdef _KERNEL
! 88:
! 89: /*
! 90: * Kernel-only definitions
! 91: */
! 92:
! 93: #include <arm/cpuconf.h>
! 94:
! 95: #include <machine/intr.h>
! 96: #ifndef _LOCORE
! 97: #if 0
! 98: #include <sys/user.h>
! 99: #endif
! 100: #include <machine/frame.h>
! 101: #include <machine/pcb.h>
! 102: #endif /* !_LOCORE */
! 103:
! 104: #include <arm/armreg.h>
! 105:
! 106: #ifndef _LOCORE
! 107: /* 1 == use cpu_sleep(), 0 == don't */
! 108: extern int cpu_do_powersave;
! 109: #endif
! 110:
! 111: #ifdef __PROG32
! 112: #ifdef _LOCORE
! 113: #define IRQdisable \
! 114: stmfd sp!, {r0} ; \
! 115: mrs r0, cpsr ; \
! 116: orr r0, r0, #(I32_bit) ; \
! 117: msr cpsr_c, r0 ; \
! 118: ldmfd sp!, {r0}
! 119:
! 120: #define IRQenable \
! 121: stmfd sp!, {r0} ; \
! 122: mrs r0, cpsr ; \
! 123: bic r0, r0, #(I32_bit) ; \
! 124: msr cpsr_c, r0 ; \
! 125: ldmfd sp!, {r0}
! 126:
! 127: #else
! 128: #define IRQdisable __set_cpsr_c(I32_bit, I32_bit);
! 129: #define IRQenable __set_cpsr_c(I32_bit, 0);
! 130: #endif /* _LOCORE */
! 131: #endif
! 132:
! 133: #ifndef _LOCORE
! 134:
! 135: /* All the CLKF_* macros take a struct clockframe * as an argument. */
! 136:
! 137: /*
! 138: * CLKF_USERMODE: Return TRUE/FALSE (1/0) depending on whether the
! 139: * frame came from USR mode or not.
! 140: */
! 141: #ifdef __PROG32
! 142: #define CLKF_USERMODE(frame) ((frame->if_spsr & PSR_MODE) == PSR_USR32_MODE)
! 143: #else
! 144: #define CLKF_USERMODE(frame) ((frame->if_r15 & R15_MODE) == R15_MODE_USR)
! 145: #endif
! 146:
! 147: /*
! 148: * CLKF_INTR: True if we took the interrupt from inside another
! 149: * interrupt handler.
! 150: */
! 151: extern int current_intr_depth;
! 152: #ifdef __PROG32
! 153: /* Hack to treat FPE time as interrupt time so we can measure it */
! 154: #define CLKF_INTR(frame) \
! 155: ((current_intr_depth > 1) || \
! 156: (frame->if_spsr & PSR_MODE) == PSR_UND32_MODE)
! 157: #else
! 158: #define CLKF_INTR(frame) (current_intr_depth > 1)
! 159: #endif
! 160:
! 161: /*
! 162: * CLKF_PC: Extract the program counter from a clockframe
! 163: */
! 164: #ifdef __PROG32
! 165: #define CLKF_PC(frame) (frame->if_pc)
! 166: #else
! 167: #define CLKF_PC(frame) (frame->if_r15 & R15_PC)
! 168: #endif
! 169:
! 170: /*
! 171: * PROC_PC: Find out the program counter for the given process.
! 172: */
! 173: #ifdef __PROG32
! 174: #define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_pc)
! 175: #else
! 176: #define PROC_PC(p) ((p)->p_addr->u_pcb.pcb_tf->tf_r15 & R15_PC)
! 177: #endif
! 178:
! 179: /* The address of the vector page. */
! 180: extern vaddr_t vector_page;
! 181: #ifdef __PROG32
! 182: void arm32_vector_init(vaddr_t, int);
! 183:
! 184: #define ARM_VEC_RESET (1 << 0)
! 185: #define ARM_VEC_UNDEFINED (1 << 1)
! 186: #define ARM_VEC_SWI (1 << 2)
! 187: #define ARM_VEC_PREFETCH_ABORT (1 << 3)
! 188: #define ARM_VEC_DATA_ABORT (1 << 4)
! 189: #define ARM_VEC_ADDRESS_EXCEPTION (1 << 5)
! 190: #define ARM_VEC_IRQ (1 << 6)
! 191: #define ARM_VEC_FIQ (1 << 7)
! 192:
! 193: #define ARM_NVEC 8
! 194: #define ARM_VEC_ALL 0xffffffff
! 195: #endif
! 196:
! 197: /*
! 198: * Per-CPU information. For now we assume one CPU.
! 199: */
! 200:
! 201: #include <sys/device.h>
! 202: #include <sys/sched.h>
! 203: struct cpu_info {
! 204: struct proc *ci_curproc;
! 205:
! 206: struct schedstate_percpu ci_schedstate; /* scheduler state */
! 207: #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
! 208: u_long ci_spin_locks; /* # of spin locks held */
! 209: u_long ci_simple_locks; /* # of simple locks held */
! 210: #endif
! 211: struct device *ci_dev; /* Device corresponding to this CPU */
! 212: u_int32_t ci_arm_cpuid; /* aggregate CPU id */
! 213: u_int32_t ci_arm_cputype; /* CPU type */
! 214: u_int32_t ci_arm_cpurev; /* CPU revision */
! 215: u_int32_t ci_ctrl; /* The CPU control register */
! 216: #ifdef MULTIPROCESSOR
! 217: MP_CPU_INFO_MEMBERS
! 218: #endif
! 219: };
! 220:
! 221: #ifndef MULTIPROCESSOR
! 222: extern struct cpu_info cpu_info_store;
! 223: #define curcpu() (&cpu_info_store)
! 224: #define cpu_number() 0
! 225: #define CPU_IS_PRIMARY(ci) 1
! 226: #define CPU_INFO_ITERATOR int
! 227: #define CPU_INFO_FOREACH(cii, ci) \
! 228: for (cii = 0, ci = curcpu(); ci != NULL; ci = NULL)
! 229: #endif
! 230:
! 231: #ifdef __PROG32
! 232: void cpu_proc_fork(struct proc *, struct proc *);
! 233: #else
! 234: #define cpu_proc_fork(p1, p2)
! 235: #endif
! 236:
! 237: /*
! 238: * Scheduling glue
! 239: */
! 240:
! 241: extern int astpending;
! 242: #define setsoftast() (astpending = 1)
! 243:
! 244: /*
! 245: * Notify the current process (p) that it has a signal pending,
! 246: * process as soon as possible.
! 247: */
! 248:
! 249: #define signotify(p) setsoftast()
! 250:
! 251: #define cpu_wait(p) /* nothing */
! 252:
! 253: /*
! 254: * Preempt the current process if in interrupt from user mode,
! 255: * or after the current trap/syscall if in system mode.
! 256: */
! 257: extern int want_resched; /* resched() was called */
! 258: #define need_resched(ci) (want_resched = 1, setsoftast())
! 259:
! 260: /*
! 261: * Give a profiling tick to the current process when the user profiling
! 262: * buffer pages are invalid. On the i386, request an ast to send us
! 263: * through trap(), marking the proc as needing a profiling tick.
! 264: */
! 265: #define need_proftick(p) setsoftast()
! 266:
! 267: #ifndef acorn26
! 268: /*
! 269: * cpu device glue (belongs in cpuvar.h)
! 270: */
! 271:
! 272: struct device;
! 273: void cpu_attach (struct device *);
! 274: int cpu_alloc_idlepcb (struct cpu_info *);
! 275: #endif
! 276:
! 277:
! 278: /*
! 279: * Random cruft
! 280: */
! 281:
! 282: /* locore.S */
! 283: void atomic_set_bit (u_int *address, u_int setmask);
! 284: void atomic_clear_bit (u_int *address, u_int clearmask);
! 285:
! 286: /* cpuswitch.S */
! 287: struct pcb;
! 288: void savectx (struct pcb *pcb);
! 289:
! 290: /* ast.c */
! 291: void userret (struct proc *p);
! 292:
! 293: /* machdep.h */
! 294: void bootsync (int);
! 295:
! 296: /* fault.c */
! 297: int badaddr_read (void *, size_t, void *);
! 298:
! 299: /* syscall.c */
! 300: void swi_handler (trapframe_t *);
! 301:
! 302: /* machine_machdep.c */
! 303: void board_startup(void);
! 304:
! 305: #endif /* !_LOCORE */
! 306:
! 307: #endif /* _KERNEL */
! 308:
! 309: #endif /* !_ARM_CPU_H_ */
! 310:
! 311: /* End of cpu.h */
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