sys/include/hal.h

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   1 /*
   2  * Copyright (c) 2005-2009, Kohsuke Ohtani
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any co-contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29 
  30 #ifndef _PREX_HAL_H
  31 #define _PREX_HAL_H
  32 
  33 #include <types.h>
  34 #include <sys/bootinfo.h>
  35 #include <context.h>
  36 #include <mmu.h>
  37 
  38 #define NO_PGD          ((pgd_t)0)      /* non-existent pgd */
  39 
  40 /*
  41  * Types for context_set()
  42  */
  43 #define CTX_KSTACK      0       /* set kernel mode stack address */
  44 #define CTX_KENTRY      1       /* set kernel mode entry address */
  45 #define CTX_KARG        2       /* set kernel mode argument */
  46 #define CTX_USTACK      3       /* set user mode stack address */
  47 #define CTX_UENTRY      4       /* set user mode entry addres */
  48 #define CTX_UARG        5       /* set user mode argument */
  49 
  50 /*
  51  * page types for mmu_map()
  52  */
  53 #define PG_UNMAP        0       /* no page */
  54 #define PG_READ         1       /* user - read only */
  55 #define PG_WRITE        2       /* user - read/write */
  56 #define PG_SYSTEM       3       /* system */
  57 #define PG_IOMEM        4       /* system - no cache */
  58 
  59 /*
  60  * Virtual/physical address mapping
  61  */
  62 struct mmumap
  63 {
  64         vaddr_t         virt;           /* virtual address */
  65         paddr_t         phys;           /* physical address */
  66         psize_t         size;           /* size */
  67         int             type;           /* mapping type */
  68 };
  69 
  70 #define AUTOSIZE        0
  71 
  72 /*
  73  * type of virtual memory mappings
  74  */
  75 #define VMT_NULL        0
  76 #define VMT_RAM         1
  77 #define VMT_ROM         2
  78 #define VMT_DMA         3
  79 #define VMT_IO          4
  80 
  81 
  82 /*
  83  * Return value of ISR
  84  */
  85 #define INT_DONE        0       /* done */
  86 #define INT_ERROR       1       /* error */
  87 #define INT_CONTINUE    2       /* continue to IST */
  88 
  89 /* No IST for irq_attach() */
  90 #define IST_NONE        ((void (*)(void *)) -1)
  91 
  92 /*
  93  * Interrupt mode for interrupt_setup()
  94  */
  95 #define IMODE_EDGE      0       /* edge trigger */
  96 #define IMODE_LEVEL     1       /* level trigger */
  97 
  98 
  99 __BEGIN_DECLS
 100 void      context_set(context_t, int, register_t);
 101 void      context_switch(context_t, context_t);
 102 void      context_save(context_t);
 103 void      context_restore(context_t);
 104 void      context_dump(context_t);
 105 
 106 void      mmu_init(struct mmumap *);
 107 void      mmu_premap(paddr_t, vaddr_t);
 108 pgd_t     mmu_newmap(void);
 109 void      mmu_terminate(pgd_t);
 110 int       mmu_map(pgd_t, paddr_t, vaddr_t, size_t, int);
 111 void      mmu_switch(pgd_t);
 112 paddr_t   mmu_extract(pgd_t, vaddr_t, size_t);
 113 
 114 int       copyin(const void *, void *, size_t);
 115 int       copyout(const void *, void *, size_t);
 116 int       copyinstr(const void *, void *, size_t);
 117 
 118 int       splhigh(void);
 119 int       spl0(void);
 120 void      splx(int);
 121 
 122 void      syscall_ret(void);
 123 
 124 void      interrupt_mask(int);
 125 void      interrupt_unmask(int, int);
 126 void      interrupt_setup(int, int);
 127 void      interrupt_init(void);
 128 
 129 void      machine_startup(void);
 130 void      machine_idle(void);
 131 void      machine_powerdown(int);
 132 void      machine_abort(void);
 133 void      machine_bootinfo(struct bootinfo **);
 134 
 135 void      clock_init(void);
 136 
 137 #ifdef DEBUG
 138 void      diag_init(void);
 139 void      diag_puts(char *);
 140 #else
 141 #define   diag_init()   ((void)0)
 142 #endif
 143 __END_DECLS
 144 
 145 #endif /* !_PREX_HAL_H */
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root/sys/include/hal.h

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