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Annotation of src/sys/arch/sh3/include/cpu.h, Revision 1.47

1.47    ! garbled     1: /*     $NetBSD: cpu.h,v 1.43.14.2 2007/10/03 19:24:58 garbled Exp $    */
1.1       itojun      2:
                      3: /*-
1.34      wiz         4:  * Copyright (c) 2002 The NetBSD Foundation, Inc. All rights reserved.
1.1       itojun      5:  * Copyright (c) 1990 The Regents of the University of California.
                      6:  * All rights reserved.
1.32      agc         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:
1.1       itojun     38: /*
1.25      uch        39:  * SH3/SH4 support.
1.1       itojun     40:  *
                     41:  *  T.Horiuchi    Brains Corp.   5/22/98
                     42:  */
                     43:
                     44: #ifndef _SH3_CPU_H_
1.28      uch        45: #define        _SH3_CPU_H_
1.1       itojun     46:
1.12      mrg        47: #if defined(_KERNEL_OPT)
1.8       thorpej    48: #include "opt_lockdebug.h"
                     49: #endif
                     50:
1.25      uch        51: #include <sh3/psl.h>
                     52: #include <sh3/frame.h>
1.8       thorpej    53:
1.26      uch        54: #ifdef _KERNEL
1.36      yamt       55: #include <sys/cpu_data.h>
1.8       thorpej    56: struct cpu_info {
1.35      yamt       57:        struct cpu_data ci_data;        /* MI per-cpu data */
1.45      ad         58:        cpuid_t ci_cpuid;
1.42      ad         59:        int     ci_mtx_count;
                     60:        int     ci_mtx_oldspl;
1.46      ad         61:        int     ci_want_resched;
1.8       thorpej    62: };
                     63:
                     64: extern struct cpu_info cpu_info_store;
                     65: #define        curcpu()                        (&cpu_info_store)
1.1       itojun     66:
                     67: /*
                     68:  * definitions of cpu-dependent requirements
                     69:  * referenced in generic code
                     70:  */
1.2       tsubai     71: #define        cpu_number()                    0
1.28      uch        72: /*
                     73:  * Can't swapout u-area, (__SWAP_BROKEN)
1.24      uch        74:  * since we use P1 converted address for trapframe.
                     75:  */
1.28      uch        76: #define        cpu_swapin(p)                   /* nothing */
1.24      uch        77: #define        cpu_swapout(p)                  panic("cpu_swapout: can't get here");
1.31      thorpej    78: #define        cpu_proc_fork(p1, p2)           /* nothing */
1.1       itojun     79:
                     80: /*
1.26      uch        81:  * Arguments to hardclock and gatherstats encapsulate the previous
                     82:  * machine state in an opaque clockframe.
1.1       itojun     83:  */
1.26      uch        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: };
1.1       itojun     89:
1.26      uch        90: #define        CLKF_USERMODE(cf)       (!KERNELMODE((cf)->ssr))
                     91: #define        CLKF_PC(cf)             ((cf)->spc)
1.29      thorpej    92: #define        CLKF_INTR(cf)           0       /* XXX */
1.1       itojun     93:
                     94: /*
1.24      uch        95:  * This is used during profiling to integrate system time.  It can safely
                     96:  * assume that the process is resident.
                     97:  */
                     98: #define        PROC_PC(p)                                                      \
                     99:        (((struct trapframe *)(p)->p_md.md_regs)->tf_spc)
                    100:
                    101: /*
1.1       itojun    102:  * Preempt the current process if in interrupt from user mode,
                    103:  * or after the current trap/syscall if in system mode.
                    104:  */
1.44      yamt      105: #define        cpu_need_resched(ci, flags)                                     \
1.24      uch       106: do {                                                                   \
1.46      ad        107:        ci->ci_want_resched = 1;                                        \
1.44      yamt      108:        if (curlwp != ci->ci_data.cpu_idlelwp)                          \
1.42      ad        109:                aston(curlwp);                                          \
1.24      uch       110: } while (/*CONSTCOND*/0)
1.1       itojun    111:
                    112: /*
                    113:  * Give a profiling tick to the current process when the user profiling
1.24      uch       114:  * buffer pages are invalid.  On the MIPS, request an ast to send us
                    115:  * through trap, marking the proc as needing a profiling tick.
1.1       itojun    116:  */
1.42      ad        117: #define        cpu_need_proftick(l)                                            \
1.24      uch       118: do {                                                                   \
1.42      ad        119:        (l)->l_pflag |= LP_OWEUPC;                                      \
                    120:        aston(l);                                                       \
1.24      uch       121: } while (/*CONSTCOND*/0)
1.1       itojun    122:
                    123: /*
                    124:  * Notify the current process (p) that it has a signal pending,
                    125:  * process as soon as possible.
                    126:  */
1.42      ad        127: #define        cpu_signotify(l)        aston(l)
1.24      uch       128:
1.42      ad        129: #define        aston(l)                ((l)->l_md.md_astpending = 1)
1.24      uch       130:
1.1       itojun    131: /*
                    132:  * We need a machine-independent name for this.
                    133:  */
                    134: #define        DELAY(x)                delay(x)
1.26      uch       135: #endif /* _KERNEL */
1.1       itojun    136:
                    137: /*
1.25      uch       138:  * Logical address space of SH3/SH4 CPU.
1.1       itojun    139:  */
1.28      uch       140: #define        SH3_PHYS_MASK   0x1fffffff
1.25      uch       141:
1.28      uch       142: #define        SH3_P0SEG_BASE  0x00000000      /* TLB mapped, also U0SEG */
                    143: #define        SH3_P0SEG_END   0x7fffffff
                    144: #define        SH3_P1SEG_BASE  0x80000000      /* pa == va */
                    145: #define        SH3_P1SEG_END   0x9fffffff
                    146: #define        SH3_P2SEG_BASE  0xa0000000      /* pa == va, non-cacheable */
                    147: #define        SH3_P2SEG_END   0xbfffffff
                    148: #define        SH3_P3SEG_BASE  0xc0000000      /* TLB mapped, kernel mode */
                    149: #define        SH3_P3SEG_END   0xdfffffff
                    150: #define        SH3_P4SEG_BASE  0xe0000000      /* peripheral space */
                    151: #define        SH3_P4SEG_END   0xffffffff
                    152:
1.39      uwe       153: #define        SH3_P1SEG_TO_PHYS(x)    ((uint32_t)(x) & SH3_PHYS_MASK)
                    154: #define        SH3_P2SEG_TO_PHYS(x)    ((uint32_t)(x) & SH3_PHYS_MASK)
                    155: #define        SH3_PHYS_TO_P1SEG(x)    ((uint32_t)(x) | SH3_P1SEG_BASE)
                    156: #define        SH3_PHYS_TO_P2SEG(x)    ((uint32_t)(x) | SH3_P2SEG_BASE)
                    157: #define        SH3_P1SEG_TO_P2SEG(x)   ((uint32_t)(x) | 0x20000000)
1.40      uwe       158: #define        SH3_P2SEG_TO_P1SEG(x)   ((uint32_t)(x) & ~0x20000000)
1.14      uch       159:
1.40      uwe       160: #ifndef __lint__
1.14      uch       161:
1.40      uwe       162: /* switch from P1 to P2 */
                    163: #define        RUN_P2 do {                                                     \
                    164:                void *p;                                                \
                    165:                p = &&P2;                                               \
                    166:                goto *(void *)SH3_P1SEG_TO_P2SEG(p);                    \
                    167:            P2: (void)0;                                                \
                    168:        } while (0)
                    169:
                    170: /* switch from P2 to P1 */
                    171: #define        RUN_P1 do {                                                     \
                    172:                void *p;                                                \
                    173:                p = &&P1;                                               \
                    174:                __asm volatile("nop;nop;nop;nop;nop;nop;nop;nop");      \
                    175:                goto *(void *)SH3_P2SEG_TO_P1SEG(p);                    \
                    176:            P1: (void)0;                                                \
                    177:        } while (0)
                    178:
                    179: #else  /* __lint__ */
                    180: #define        RUN_P2  do {} while (/* CONSTCOND */ 0)
                    181: #define        RUN_P1  do {} while (/* CONSTCOND */ 0)
                    182: #endif
1.27      msaitoh   183:
                    184: #if defined(SH4)
                    185: /* SH4 Processor Version Register */
                    186: #define        SH4_PVR_ADDR    0xff000030      /* P4  address */
1.39      uwe       187: #define        SH4_PVR         (*(volatile uint32_t *) SH4_PVR_ADDR)
1.30      msaitoh   188: #define        SH4_PRR_ADDR    0xff000044      /* P4  address */
1.39      uwe       189: #define        SH4_PRR         (*(volatile uint32_t *) SH4_PRR_ADDR)
1.27      msaitoh   190:
                    191: #define        SH4_PVR_MASK    0xffffff00
                    192: #define        SH4_PVR_SH7750  0x04020500      /* SH7750  */
                    193: #define        SH4_PVR_SH7750S 0x04020600      /* SH7750S */
1.30      msaitoh   194: #define        SH4_PVR_SH775xR 0x04050000      /* SH775xR */
1.27      msaitoh   195: #define        SH4_PVR_SH7751  0x04110000      /* SH7751  */
1.30      msaitoh   196:
                    197: #define        SH4_PRR_MASK    0xfffffff0
                    198: #define SH4_PRR_7750R  0x00000100      /* SH7750R */
                    199: #define SH4_PRR_7751R  0x00000110      /* SH7751R */
1.27      msaitoh   200: #endif
1.1       itojun    201:
                    202: /*
                    203:  * pull in #defines for kinds of processors
                    204:  */
                    205: #include <machine/cputypes.h>
                    206:
1.22      uch       207: /*
                    208:  * CTL_MACHDEP definitions.
                    209:  */
                    210: #define        CPU_CONSDEV             1       /* dev_t: console terminal device */
                    211: #define        CPU_LOADANDRESET        2       /* load kernel image and reset */
                    212: #define        CPU_MAXID               3       /* number of valid machdep ids */
                    213:
                    214: #define        CTL_MACHDEP_NAMES {                                             \
                    215:        { 0, 0 },                                                       \
                    216:        { "console_device",     CTLTYPE_STRUCT },                       \
                    217:        { "load_and_reset",     CTLTYPE_INT },                          \
                    218: }
1.1       itojun    219:
1.25      uch       220: #ifdef _KERNEL
                    221: void sh_cpu_init(int, int);
                    222: void sh_startup(void);
1.41      uwe       223: void cpu_reset(void) __attribute__((__noreturn__)); /* soft reset */
1.39      uwe       224: void _cpu_spin(uint32_t);      /* for delay loop. */
1.25      uch       225: void delay(int);
                    226: struct pcb;
                    227: void savectx(struct pcb *);
                    228: void dumpsys(void);
                    229: #endif /* _KERNEL */
1.1       itojun    230: #endif /* !_SH3_CPU_H_ */

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