Annotation of sys/arch/sh/include/cpu.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: cpu.h,v 1.10 2007/06/06 17:15:12 deraadt Exp $ */
! 2: /* $NetBSD: cpu.h,v 1.41 2006/01/21 04:24:12 uwe Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 2002 The NetBSD Foundation, Inc. All rights reserved.
! 6: * Copyright (c) 1990 The Regents of the University of California.
! 7: * All rights reserved.
! 8: *
! 9: * This code is derived from software contributed to Berkeley by
! 10: * William Jolitz.
! 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. Neither the name of the University nor the names of its contributors
! 21: * may be used to endorse or promote products derived from this software
! 22: * without specific prior written permission.
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 34: * SUCH DAMAGE.
! 35: *
! 36: * @(#)cpu.h 5.4 (Berkeley) 5/9/91
! 37: */
! 38:
! 39: /*
! 40: * SH3/SH4 support.
! 41: *
! 42: * T.Horiuchi Brains Corp. 5/22/98
! 43: */
! 44:
! 45: #ifndef _SH_CPU_H_
! 46: #define _SH_CPU_H_
! 47:
! 48: #include <sh/psl.h>
! 49: #include <sh/frame.h>
! 50:
! 51: #ifdef _KERNEL
! 52:
! 53: /*
! 54: * Per-CPU information.
! 55: */
! 56:
! 57: #include <sys/sched.h>
! 58: struct cpu_info {
! 59: struct proc *ci_curproc;
! 60:
! 61: struct schedstate_percpu ci_schedstate; /* scheduler state */
! 62: };
! 63:
! 64: extern struct cpu_info cpu_info_store;
! 65: #define curcpu() (&cpu_info_store)
! 66: #define cpu_number() 0
! 67: #define CPU_IS_PRIMARY(ci) 1
! 68: #define CPU_INFO_ITERATOR int
! 69: #define CPU_INFO_FOREACH(cii, ci) \
! 70: for (cii = 0, ci = curcpu(); ci != NULL; ci = NULL)
! 71:
! 72:
! 73: /*
! 74: * Arguments to hardclock and gatherstats encapsulate the previous
! 75: * machine state in an opaque clockframe.
! 76: */
! 77: struct clockframe {
! 78: int spc; /* program counter at time of interrupt */
! 79: int ssr; /* status register at time of interrupt */
! 80: int ssp; /* stack pointer at time of interrupt */
! 81: };
! 82:
! 83: #define CLKF_USERMODE(cf) (!KERNELMODE((cf)->ssr))
! 84: #define CLKF_BASEPRI(cf) (((cf)->ssr & 0xf0) == 0)
! 85: #define CLKF_PC(cf) ((cf)->spc)
! 86: #define CLKF_INTR(cf) 0 /* XXX */
! 87:
! 88: /*
! 89: * This is used during profiling to integrate system time. It can safely
! 90: * assume that the process is resident.
! 91: */
! 92: #define PROC_PC(p) \
! 93: (((struct trapframe *)(p)->p_md.md_regs)->tf_spc)
! 94:
! 95: /*
! 96: * Preempt the current process if in interrupt from user mode,
! 97: * or after the current trap/syscall if in system mode.
! 98: */
! 99: #define need_resched(ci) \
! 100: do { \
! 101: want_resched = 1; \
! 102: if (curproc != NULL) \
! 103: aston(curproc); \
! 104: } while (/*CONSTCOND*/0)
! 105:
! 106: /*
! 107: * Give a profiling tick to the current process when the user profiling
! 108: * buffer pages are invalid. On the MIPS, request an ast to send us
! 109: * through trap, marking the proc as needing a profiling tick.
! 110: */
! 111: #define need_proftick(p) aston(p)
! 112:
! 113: /*
! 114: * Notify the current process (p) that it has a signal pending,
! 115: * process as soon as possible.
! 116: */
! 117: #define signotify(p) aston(p)
! 118:
! 119: #define aston(p) ((p)->p_md.md_astpending = 1)
! 120:
! 121: extern int want_resched; /* need_resched() was called */
! 122:
! 123: #define cpu_wait(p) ((void)(p))
! 124: /*
! 125: * We need a machine-independent name for this.
! 126: */
! 127: #define DELAY(x) delay(x)
! 128: #endif /* _KERNEL */
! 129:
! 130: /*
! 131: * Logical address space of SH3/SH4 CPU.
! 132: */
! 133: #define SH3_PHYS_MASK 0x1fffffff
! 134:
! 135: #define SH3_P0SEG_BASE 0x00000000 /* TLB mapped, also U0SEG */
! 136: #define SH3_P0SEG_END 0x7fffffff
! 137: #define SH3_P1SEG_BASE 0x80000000 /* pa == va */
! 138: #define SH3_P1SEG_END 0x9fffffff
! 139: #define SH3_P2SEG_BASE 0xa0000000 /* pa == va, non-cacheable */
! 140: #define SH3_P2SEG_END 0xbfffffff
! 141: #define SH3_P3SEG_BASE 0xc0000000 /* TLB mapped, kernel mode */
! 142: #define SH3_P3SEG_END 0xdfffffff
! 143: #define SH3_P4SEG_BASE 0xe0000000 /* peripheral space */
! 144: #define SH3_P4SEG_END 0xffffffff
! 145:
! 146: #define SH3_P1SEG_TO_PHYS(x) ((uint32_t)(x) & SH3_PHYS_MASK)
! 147: #define SH3_P2SEG_TO_PHYS(x) ((uint32_t)(x) & SH3_PHYS_MASK)
! 148: #define SH3_PHYS_TO_P1SEG(x) ((uint32_t)(x) | SH3_P1SEG_BASE)
! 149: #define SH3_PHYS_TO_P2SEG(x) ((uint32_t)(x) | SH3_P2SEG_BASE)
! 150: #define SH3_P1SEG_TO_P2SEG(x) ((uint32_t)(x) | 0x20000000)
! 151: #define SH3_P2SEG_TO_P1SEG(x) ((uint32_t)(x) & ~0x20000000)
! 152:
! 153: #ifdef _KERNEL
! 154: #ifndef __lint__
! 155:
! 156: /* switch from P1 to P2 */
! 157: #define RUN_P2 do { \
! 158: void *p; \
! 159: p = &&P2; \
! 160: goto *(void *)SH3_P1SEG_TO_P2SEG(p); \
! 161: P2: (void)0; \
! 162: } while (0)
! 163:
! 164: /* switch from P2 to P1 */
! 165: #define RUN_P1 do { \
! 166: void *p; \
! 167: p = &&P1; \
! 168: __asm volatile("nop;nop;nop;nop;nop;nop;nop;nop"); \
! 169: goto *(void *)SH3_P2SEG_TO_P1SEG(p); \
! 170: P1: (void)0; \
! 171: } while (0)
! 172:
! 173: #else /* __lint__ */
! 174: #define RUN_P2 do {} while (/* CONSTCOND */ 0)
! 175: #define RUN_P1 do {} while (/* CONSTCOND */ 0)
! 176: #endif
! 177: #endif
! 178:
! 179: #if defined(SH4)
! 180: /* SH4 Processor Version Register */
! 181: #define SH4_PVR_ADDR 0xff000030 /* P4 address */
! 182: #define SH4_PVR (*(volatile uint32_t *) SH4_PVR_ADDR)
! 183: #define SH4_PRR_ADDR 0xff000044 /* P4 address */
! 184: #define SH4_PRR (*(volatile uint32_t *) SH4_PRR_ADDR)
! 185:
! 186: #define SH4_PVR_MASK 0xffffff00
! 187: #define SH4_PVR_SH7750 0x04020500 /* SH7750 */
! 188: #define SH4_PVR_SH7750S 0x04020600 /* SH7750S */
! 189: #define SH4_PVR_SH775xR 0x04050000 /* SH775xR */
! 190: #define SH4_PVR_SH7751 0x04110000 /* SH7751 */
! 191:
! 192: #define SH4_PRR_MASK 0xfffffff0
! 193: #define SH4_PRR_7750R 0x00000100 /* SH7750R */
! 194: #define SH4_PRR_7751R 0x00000110 /* SH7751R */
! 195: #endif
! 196:
! 197: /*
! 198: * pull in #defines for kinds of processors
! 199: */
! 200: #include <machine/cputypes.h>
! 201:
! 202: #ifdef _KERNEL
! 203: void sh_cpu_init(int, int);
! 204: void sh_startup(void);
! 205: __dead void cpu_reset(void); /* soft reset */
! 206: void _cpu_spin(uint32_t); /* for delay loop. */
! 207: void delay(int);
! 208: struct pcb;
! 209: void savectx(struct pcb *);
! 210: struct fpreg;
! 211: void fpu_save(struct fpreg *);
! 212: void fpu_restore(struct fpreg *);
! 213: u_int cpu_dump(int (*)(dev_t, daddr64_t, caddr_t, size_t), daddr64_t *);
! 214: u_int cpu_dumpsize(void);
! 215: void dumpconf(void);
! 216: void dumpsys(void);
! 217: #endif /* _KERNEL */
! 218: #endif /* !_SH_CPU_H_ */
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