Annotation of sys/arch/alpha/include/cpu.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: cpu.h,v 1.30 2007/05/06 19:05:11 martin Exp $ */
! 2: /* $NetBSD: cpu.h,v 1.45 2000/08/21 02:03:12 thorpej Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
! 10: * NASA Ames Research Center.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. All advertising materials mentioning features or use of this software
! 21: * must display the following acknowledgement:
! 22: * This product includes software developed by the NetBSD
! 23: * Foundation, Inc. and its contributors.
! 24: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 25: * contributors may be used to endorse or promote products derived
! 26: * from this software without specific prior written permission.
! 27: *
! 28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 38: * POSSIBILITY OF SUCH DAMAGE.
! 39: */
! 40:
! 41: /*
! 42: * Copyright (c) 1988 University of Utah.
! 43: * Copyright (c) 1982, 1990, 1993
! 44: * The Regents of the University of California. All rights reserved.
! 45: *
! 46: * This code is derived from software contributed to Berkeley by
! 47: * the Systems Programming Group of the University of Utah Computer
! 48: * Science Department.
! 49: *
! 50: * Redistribution and use in source and binary forms, with or without
! 51: * modification, are permitted provided that the following conditions
! 52: * are met:
! 53: * 1. Redistributions of source code must retain the above copyright
! 54: * notice, this list of conditions and the following disclaimer.
! 55: * 2. Redistributions in binary form must reproduce the above copyright
! 56: * notice, this list of conditions and the following disclaimer in the
! 57: * documentation and/or other materials provided with the distribution.
! 58: * 3. Neither the name of the University nor the names of its contributors
! 59: * may be used to endorse or promote products derived from this software
! 60: * without specific prior written permission.
! 61: *
! 62: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 63: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 64: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 65: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 66: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 67: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 68: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 69: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 70: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 71: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 72: * SUCH DAMAGE.
! 73: *
! 74: * from: Utah $Hdr: cpu.h 1.16 91/03/25$
! 75: *
! 76: * @(#)cpu.h 8.4 (Berkeley) 1/5/94
! 77: */
! 78:
! 79: #ifndef _ALPHA_CPU_H_
! 80: #define _ALPHA_CPU_H_
! 81:
! 82: #ifndef NO_IEEE
! 83: typedef union alpha_s_float {
! 84: u_int32_t i;
! 85: u_int32_t frac: 23,
! 86: exp: 8,
! 87: sign: 1;
! 88: } s_float;
! 89:
! 90: typedef union alpha_t_float {
! 91: u_int64_t i;
! 92: u_int64_t frac: 52,
! 93: exp: 11,
! 94: sign: 1;
! 95: } t_float;
! 96: #endif
! 97:
! 98: /*
! 99: * Exported definitions unique to Alpha cpu support.
! 100: */
! 101:
! 102: #include <machine/alpha_cpu.h>
! 103: #include <machine/frame.h>
! 104: #include <machine/param.h>
! 105:
! 106: #ifdef _KERNEL
! 107:
! 108: #include <machine/bus.h>
! 109: #include <machine/intr.h>
! 110: #include <sys/device.h>
! 111: #include <sys/sched.h>
! 112:
! 113: struct pcb;
! 114: struct proc;
! 115: struct reg;
! 116: struct rpb;
! 117: struct trapframe;
! 118:
! 119: extern u_long cpu_implver; /* from IMPLVER instruction */
! 120: extern u_long cpu_amask; /* from AMASK instruction */
! 121: extern int bootdev_debug;
! 122: extern int alpha_fp_sync_complete;
! 123: extern int alpha_unaligned_print, alpha_unaligned_fix, alpha_unaligned_sigbus;
! 124:
! 125: void XentArith(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
! 126: void XentIF(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
! 127: void XentInt(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
! 128: void XentMM(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
! 129: void XentRestart(void); /* MAGIC */
! 130: void XentSys(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
! 131: void XentUna(u_int64_t, u_int64_t, u_int64_t); /* MAGIC */
! 132: void alpha_init(u_long, u_long, u_long, u_long, u_long);
! 133: int alpha_pa_access(u_long);
! 134: void ast(struct trapframe *);
! 135: int badaddr(void *, size_t);
! 136: int badaddr_read(void *, size_t, void *);
! 137: u_int64_t console_restart(struct trapframe *);
! 138: void do_sir(void);
! 139: void dumpconf(void);
! 140: void exception_return(void); /* MAGIC */
! 141: void frametoreg(struct trapframe *, struct reg *);
! 142: long fswintrberr(void); /* MAGIC */
! 143: void init_bootstrap_console(void);
! 144: void init_prom_interface(struct rpb *);
! 145: void interrupt(unsigned long, unsigned long, unsigned long,
! 146: struct trapframe *);
! 147: void machine_check(unsigned long, struct trapframe *, unsigned long,
! 148: unsigned long);
! 149: u_int64_t hwrpb_checksum(void);
! 150: void hwrpb_restart_setup(void);
! 151: void regdump(struct trapframe *);
! 152: void regtoframe(struct reg *, struct trapframe *);
! 153: void savectx(struct pcb *);
! 154: void switch_exit(struct proc *); /* MAGIC */
! 155: void switch_trampoline(void); /* MAGIC */
! 156: void syscall(u_int64_t, struct trapframe *);
! 157: void trap(unsigned long, unsigned long, unsigned long, unsigned long,
! 158: struct trapframe *);
! 159: void trap_init(void);
! 160: void enable_nsio_ide(bus_space_tag_t);
! 161:
! 162: /* Multiprocessor glue; cpu.c */
! 163: struct cpu_info;
! 164: int cpu_iccb_send(cpuid_t, const char *);
! 165: void cpu_iccb_receive(void);
! 166: void cpu_hatch(struct cpu_info *);
! 167: void cpu_halt_secondary(unsigned long);
! 168: void cpu_spinup_trampoline(void); /* MAGIC */
! 169: void cpu_pause(unsigned long);
! 170: void cpu_resume(unsigned long);
! 171:
! 172: /*
! 173: * Machine check information.
! 174: */
! 175: struct mchkinfo {
! 176: __volatile int mc_expected; /* machine check is expected */
! 177: __volatile int mc_received; /* machine check was received */
! 178: };
! 179:
! 180: struct cpu_info {
! 181: struct device *ci_dev; /* pointer to our device */
! 182: /*
! 183: * Public members.
! 184: */
! 185: struct schedstate_percpu ci_schedstate; /* scheduler state */
! 186: #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
! 187: u_long ci_spin_locks; /* # of spin locks held */
! 188: u_long ci_simple_locks; /* # of simple locks held */
! 189: #endif
! 190: struct proc *ci_curproc; /* current owner of the processor */
! 191: struct simplelock ci_slock; /* lock on this data structure */
! 192: cpuid_t ci_cpuid; /* our CPU ID */
! 193: struct cpu_info *ci_next;
! 194:
! 195: /*
! 196: * Private members.
! 197: */
! 198: struct mchkinfo ci_mcinfo; /* machine check info */
! 199: struct proc *ci_fpcurproc; /* current owner of the FPU */
! 200: paddr_t ci_curpcb; /* PA of current HW PCB */
! 201: struct pcb *ci_idle_pcb; /* our idle PCB */
! 202: paddr_t ci_idle_pcb_paddr; /* PA of idle PCB */
! 203: struct cpu_softc *ci_softc; /* pointer to our device */
! 204: u_long ci_want_resched; /* preempt current process */
! 205: u_long ci_astpending; /* AST is pending */
! 206: u_long ci_intrdepth; /* interrupt trap depth */
! 207: struct trapframe *ci_db_regs; /* registers for debuggers */
! 208: #if defined(MULTIPROCESSOR)
! 209: u_long ci_flags; /* flags; see below */
! 210: u_long ci_ipis; /* interprocessor interrupts pending */
! 211: #endif
! 212: };
! 213:
! 214: #define CPUF_PRIMARY 0x01 /* CPU is primary CPU */
! 215: #define CPUF_PRESENT 0x02 /* CPU is present */
! 216: #define CPUF_RUNNING 0x04 /* CPU is running */
! 217: #define CPUF_PAUSED 0x08 /* CPU is paused */
! 218: #define CPUF_FPUSAVE 0x10 /* CPU is currently in fpusave_cpu() */
! 219:
! 220: void fpusave_cpu(struct cpu_info *, int);
! 221: void fpusave_proc(struct proc *, int);
! 222:
! 223: #define CPU_INFO_UNIT(ci) ((ci)->ci_dev->dv_unit)
! 224: #define CPU_INFO_ITERATOR int
! 225: #define CPU_INFO_FOREACH(cii, ci) for (cii = 0, ci = curcpu(); \
! 226: ci != NULL; ci = ci->ci_next)
! 227:
! 228: #if defined(MULTIPROCESSOR)
! 229: extern __volatile u_long cpus_running;
! 230: extern __volatile u_long cpus_paused;
! 231: extern struct cpu_info cpu_info[];
! 232:
! 233: #define curcpu() ((struct cpu_info *)alpha_pal_rdval())
! 234: #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY)
! 235:
! 236: void cpu_boot_secondary_processors(void);
! 237:
! 238: void cpu_pause_resume(unsigned long, int);
! 239: void cpu_pause_resume_all(int);
! 240: #else /* ! MULTIPROCESSOR */
! 241: extern struct cpu_info cpu_info_store;
! 242:
! 243: #define curcpu() (&cpu_info_store)
! 244: #define CPU_IS_PRIMARY(ci) 1
! 245: #endif /* MULTIPROCESSOR */
! 246:
! 247: #define curproc curcpu()->ci_curproc
! 248: #define fpcurproc curcpu()->ci_fpcurproc
! 249: #define curpcb curcpu()->ci_curpcb
! 250:
! 251: /*
! 252: * definitions of cpu-dependent requirements
! 253: * referenced in generic code
! 254: */
! 255: #define cpu_wait(p) /* nothing */
! 256: #define cpu_number() alpha_pal_whami()
! 257:
! 258: /*
! 259: * Arguments to hardclock and gatherstats encapsulate the previous
! 260: * machine state in an opaque clockframe. One the Alpha, we use
! 261: * what we push on an interrupt (a trapframe).
! 262: */
! 263: struct clockframe {
! 264: struct trapframe cf_tf;
! 265: };
! 266: #define CLKF_USERMODE(framep) \
! 267: (((framep)->cf_tf.tf_regs[FRAME_PS] & ALPHA_PSL_USERMODE) != 0)
! 268: #define CLKF_PC(framep) ((framep)->cf_tf.tf_regs[FRAME_PC])
! 269:
! 270: /*
! 271: * This isn't perfect; if the clock interrupt comes in before the
! 272: * r/m/w cycle is complete, we won't be counted... but it's not
! 273: * like this stastic has to be extremely accurate.
! 274: */
! 275: #define CLKF_INTR(framep) (curcpu()->ci_intrdepth)
! 276:
! 277: /*
! 278: * This is used during profiling to integrate system time.
! 279: */
! 280: #define PROC_PC(p) ((p)->p_md.md_tf->tf_regs[FRAME_PC])
! 281:
! 282: /*
! 283: * Preempt the current process if in interrupt from user mode,
! 284: * or after the current trap/syscall if in system mode.
! 285: */
! 286: #ifdef MULTIPROCESSOR
! 287: #define need_resched(ci) \
! 288: do { \
! 289: ci->ci_want_resched = 1; \
! 290: aston(curcpu()); \
! 291: } while (/*CONSTCOND*/0)
! 292: #else
! 293: #define need_resched(ci) \
! 294: do { \
! 295: curcpu()->ci_want_resched = 1; \
! 296: aston(curcpu()); \
! 297: } while (/*CONSTCOND*/0)
! 298: #endif
! 299:
! 300: /*
! 301: * Give a profiling tick to the current process when the user profiling
! 302: * buffer pages are invalid. On the Alpha, request an AST to send us
! 303: * through trap, marking the proc as needing a profiling tick.
! 304: */
! 305: #ifdef notyet
! 306: #define need_proftick(p) \
! 307: do { \
! 308: aston((p)->p_cpu); \
! 309: } while (/*CONSTCOND*/0)
! 310: #else
! 311: #define need_proftick(p) \
! 312: do { \
! 313: aston(curcpu()); \
! 314: } while (/*CONSTCOND*/0)
! 315: #endif
! 316:
! 317: /*
! 318: * Notify the current process (p) that it has a signal pending,
! 319: * process as soon as possible.
! 320: */
! 321: #ifdef notyet
! 322: #define signotify(p) aston((p)->p_cpu)
! 323: #else
! 324: #define signotify(p) aston(curcpu())
! 325: #endif
! 326:
! 327: /*
! 328: * XXXSMP
! 329: * Should we send an AST IPI? Or just let it handle it next time
! 330: * it sees a normal kernel entry? I guess letting it happen later
! 331: * follows the `asynchronous' part of the name...
! 332: */
! 333: #define aston(ci) ((ci)->ci_astpending = 1)
! 334: #endif /* _KERNEL */
! 335:
! 336: /*
! 337: * CTL_MACHDEP definitions.
! 338: */
! 339: #define CPU_CONSDEV 1 /* dev_t: console terminal device */
! 340: #define CPU_ROOT_DEVICE 2 /* string: root device name */
! 341: #define CPU_UNALIGNED_PRINT 3 /* int: print unaligned accesses */
! 342: #define CPU_UNALIGNED_FIX 4 /* int: fix unaligned accesses */
! 343: #define CPU_UNALIGNED_SIGBUS 5 /* int: SIGBUS unaligned accesses */
! 344: #define CPU_BOOTED_KERNEL 6 /* string: booted kernel name */
! 345: #define CPU_FP_SYNC_COMPLETE 7 /* int: always fixup sync fp traps */
! 346: #define CPU_CHIPSET 8 /* chipset information */
! 347: #define CPU_ALLOWAPERTURE 9
! 348:
! 349: #define CPU_MAXID 10 /* valid machdep IDs */
! 350:
! 351: #define CPU_CHIPSET_MEM 1 /* PCI memory address */
! 352: #define CPU_CHIPSET_BWX 2 /* PCI supports BWX */
! 353: #define CPU_CHIPSET_TYPE 3 /* PCI chipset name */
! 354: #define CPU_CHIPSET_DENSE 4 /* PCI chipset dense memory addr */
! 355: #define CPU_CHIPSET_PORTS 5 /* PCI port address */
! 356: #define CPU_CHIPSET_HAE_MASK 6 /* PCI chipset mask for HAE register */
! 357: #define CPU_CHIPSET_MAXID 7
! 358:
! 359: #define CTL_MACHDEP_NAMES { \
! 360: { 0, 0 }, \
! 361: { "console_device", CTLTYPE_STRUCT }, \
! 362: { "root_device", CTLTYPE_STRING }, \
! 363: { "unaligned_print", CTLTYPE_INT }, \
! 364: { "unaligned_fix", CTLTYPE_INT }, \
! 365: { "unaligned_sigbus", CTLTYPE_INT }, \
! 366: { "booted_kernel", CTLTYPE_STRING }, \
! 367: { "fp_sync_complete", CTLTYPE_INT }, \
! 368: { "chipset", CTLTYPE_NODE }, \
! 369: { "allowaperture", CTLTYPE_INT }, \
! 370: }
! 371:
! 372: #define CTL_CHIPSET_NAMES { \
! 373: { 0, 0 }, \
! 374: { "memory", CTLTYPE_QUAD }, \
! 375: { "bwx", CTLTYPE_INT }, \
! 376: { "type", CTLTYPE_STRING }, \
! 377: { "dense_base", CTLTYPE_QUAD }, \
! 378: { "ports_base", CTLTYPE_QUAD }, \
! 379: { "hae_mask", CTLTYPE_QUAD }, \
! 380: }
! 381:
! 382: #ifdef _KERNEL
! 383:
! 384: struct pcb;
! 385: struct proc;
! 386: struct reg;
! 387: struct rpb;
! 388: struct trapframe;
! 389:
! 390: /* IEEE and VAX FP completion */
! 391:
! 392: #ifndef NO_IEEE
! 393: void alpha_sts(int, s_float *); /* MAGIC */
! 394: void alpha_stt(int, t_float *); /* MAGIC */
! 395: void alpha_lds(int, s_float *); /* MAGIC */
! 396: void alpha_ldt(int, t_float *); /* MAGIC */
! 397:
! 398: uint64_t alpha_read_fpcr(void); /* MAGIC */
! 399: void alpha_write_fpcr(u_int64_t); /* MAGIC */
! 400:
! 401: u_int64_t alpha_read_fp_c(struct proc *);
! 402: void alpha_write_fp_c(struct proc *, u_int64_t);
! 403:
! 404: int alpha_fp_complete(u_long, u_long, struct proc *, u_int64_t *);
! 405: #endif
! 406:
! 407: void alpha_enable_fp(struct proc *, int);
! 408:
! 409: #ifdef MULTIPROCESSOR
! 410: #include <sys/mplock.h>
! 411: #endif
! 412:
! 413: #endif /* _KERNEL */
! 414: #endif /* _ALPHA_CPU_H_ */
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