cpu.h revision 1.34
1 /* $NetBSD: cpu.h,v 1.34 2004/03/24 15:38:41 wiz Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. All rights reserved. 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 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. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)cpu.h 5.4 (Berkeley) 5/9/91 36 */ 37 38 /* 39 * SH3/SH4 support. 40 * 41 * T.Horiuchi Brains Corp. 5/22/98 42 */ 43 44 #ifndef _SH3_CPU_H_ 45 #define _SH3_CPU_H_ 46 47 #if defined(_KERNEL_OPT) 48 #include "opt_lockdebug.h" 49 #endif 50 51 #include <sys/sched.h> 52 #include <sh3/psl.h> 53 #include <sh3/frame.h> 54 55 #ifdef _KERNEL 56 struct cpu_info { 57 struct schedstate_percpu ci_schedstate; /* scheduler state */ 58 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 59 u_long ci_spin_locks; /* # of spin locks held */ 60 u_long ci_simple_locks; /* # of simple locks held */ 61 #endif 62 }; 63 64 extern struct cpu_info cpu_info_store; 65 #define curcpu() (&cpu_info_store) 66 67 /* 68 * definitions of cpu-dependent requirements 69 * referenced in generic code 70 */ 71 #define cpu_number() 0 72 /* 73 * Can't swapout u-area, (__SWAP_BROKEN) 74 * since we use P1 converted address for trapframe. 75 */ 76 #define cpu_swapin(p) /* nothing */ 77 #define cpu_swapout(p) panic("cpu_swapout: can't get here"); 78 #define cpu_proc_fork(p1, p2) /* nothing */ 79 80 /* 81 * Arguments to hardclock and gatherstats encapsulate the previous 82 * machine state in an opaque clockframe. 83 */ 84 struct clockframe { 85 int spc; /* program counter at time of interrupt */ 86 int ssr; /* status register at time of interrupt */ 87 int ssp; /* stack pointer at time of interrupt */ 88 }; 89 90 #define CLKF_USERMODE(cf) (!KERNELMODE((cf)->ssr)) 91 #define CLKF_BASEPRI(cf) (((cf)->ssr & 0xf0) == 0) 92 #define CLKF_PC(cf) ((cf)->spc) 93 #define CLKF_INTR(cf) 0 /* XXX */ 94 95 /* 96 * This is used during profiling to integrate system time. It can safely 97 * assume that the process is resident. 98 */ 99 #define PROC_PC(p) \ 100 (((struct trapframe *)(p)->p_md.md_regs)->tf_spc) 101 102 /* 103 * Preempt the current process if in interrupt from user mode, 104 * or after the current trap/syscall if in system mode. 105 */ 106 #define need_resched(ci) \ 107 do { \ 108 want_resched = 1; \ 109 if (curproc != NULL) \ 110 aston(curproc); \ 111 } while (/*CONSTCOND*/0) 112 113 /* 114 * Give a profiling tick to the current process when the user profiling 115 * buffer pages are invalid. On the MIPS, request an ast to send us 116 * through trap, marking the proc as needing a profiling tick. 117 */ 118 #define need_proftick(p) \ 119 do { \ 120 (p)->p_flag |= P_OWEUPC; \ 121 aston(p); \ 122 } while (/*CONSTCOND*/0) 123 124 /* 125 * Notify the current process (p) that it has a signal pending, 126 * process as soon as possible. 127 */ 128 #define signotify(p) aston(p) 129 130 #define aston(p) ((p)->p_md.md_astpending = 1) 131 132 extern int want_resched; /* need_resched() was called */ 133 134 /* 135 * We need a machine-independent name for this. 136 */ 137 #define DELAY(x) delay(x) 138 #endif /* _KERNEL */ 139 140 /* 141 * Logical address space of SH3/SH4 CPU. 142 */ 143 #define SH3_PHYS_MASK 0x1fffffff 144 145 #define SH3_P0SEG_BASE 0x00000000 /* TLB mapped, also U0SEG */ 146 #define SH3_P0SEG_END 0x7fffffff 147 #define SH3_P1SEG_BASE 0x80000000 /* pa == va */ 148 #define SH3_P1SEG_END 0x9fffffff 149 #define SH3_P2SEG_BASE 0xa0000000 /* pa == va, non-cacheable */ 150 #define SH3_P2SEG_END 0xbfffffff 151 #define SH3_P3SEG_BASE 0xc0000000 /* TLB mapped, kernel mode */ 152 #define SH3_P3SEG_END 0xdfffffff 153 #define SH3_P4SEG_BASE 0xe0000000 /* peripheral space */ 154 #define SH3_P4SEG_END 0xffffffff 155 156 #define SH3_P1SEG_TO_PHYS(x) ((u_int32_t)(x) & SH3_PHYS_MASK) 157 #define SH3_P2SEG_TO_PHYS(x) ((u_int32_t)(x) & SH3_PHYS_MASK) 158 #define SH3_PHYS_TO_P1SEG(x) ((u_int32_t)(x) | SH3_P1SEG_BASE) 159 #define SH3_PHYS_TO_P2SEG(x) ((u_int32_t)(x) | SH3_P2SEG_BASE) 160 #define SH3_P1SEG_TO_P2SEG(x) ((u_int32_t)(x) | 0x20000000) 161 162 /* run on P2 */ 163 #define RUN_P2 \ 164 do { \ 165 u_int32_t p; \ 166 p = (u_int32_t)&&P2; \ 167 goto *(u_int32_t *)(p | 0x20000000); \ 168 P2: (void)0; \ 169 } while (/*CONSTCOND*/0) 170 171 /* run on P1 */ 172 #define RUN_P1 \ 173 do { \ 174 u_int32_t p; \ 175 p = (u_int32_t)&&P1; \ 176 __asm__ __volatile__("nop;nop;nop;nop;nop;nop;nop;nop"); \ 177 goto *(u_int32_t *)(p & ~0x20000000); \ 178 P1: (void)0; \ 179 } while (/*CONSTCOND*/0) 180 181 #if defined(SH4) 182 /* SH4 Processor Version Register */ 183 #define SH4_PVR_ADDR 0xff000030 /* P4 address */ 184 #define SH4_PVR (*(volatile unsigned int *) SH4_PVR_ADDR) 185 #define SH4_PRR_ADDR 0xff000044 /* P4 address */ 186 #define SH4_PRR (*(volatile unsigned int *) SH4_PRR_ADDR) 187 188 #define SH4_PVR_MASK 0xffffff00 189 #define SH4_PVR_SH7750 0x04020500 /* SH7750 */ 190 #define SH4_PVR_SH7750S 0x04020600 /* SH7750S */ 191 #define SH4_PVR_SH775xR 0x04050000 /* SH775xR */ 192 #define SH4_PVR_SH7751 0x04110000 /* SH7751 */ 193 194 #define SH4_PRR_MASK 0xfffffff0 195 #define SH4_PRR_7750R 0x00000100 /* SH7750R */ 196 #define SH4_PRR_7751R 0x00000110 /* SH7751R */ 197 #endif 198 199 /* 200 * pull in #defines for kinds of processors 201 */ 202 #include <machine/cputypes.h> 203 204 /* 205 * CTL_MACHDEP definitions. 206 */ 207 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 208 #define CPU_LOADANDRESET 2 /* load kernel image and reset */ 209 #define CPU_MAXID 3 /* number of valid machdep ids */ 210 211 #define CTL_MACHDEP_NAMES { \ 212 { 0, 0 }, \ 213 { "console_device", CTLTYPE_STRUCT }, \ 214 { "load_and_reset", CTLTYPE_INT }, \ 215 } 216 217 #ifdef _KERNEL 218 void sh_cpu_init(int, int); 219 void sh_startup(void); 220 void cpu_reset(void); /* Soft reset */ 221 void _cpu_spin(u_int32_t); /* for delay loop. */ 222 void delay(int); 223 struct pcb; 224 void savectx(struct pcb *); 225 void dumpsys(void); 226 #endif /* _KERNEL */ 227 #endif /* !_SH3_CPU_H_ */ 228 229
Indexes created Sun Sep 28 16:09:52 GMT 2025