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2 | pj | 1 | /* |
2 | * Project: S.Ha.R.K. |
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3 | * |
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4 | * Coordinators: |
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5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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6 | * Paolo Gai <pj@gandalf.sssup.it> |
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7 | * |
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8 | * Authors : |
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9 | * Paolo Gai <pj@gandalf.sssup.it> |
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10 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
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11 | * Luca Abeni <luca@gandalf.sssup.it> |
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12 | * (see the web pages for full authors list) |
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13 | * |
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14 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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15 | * |
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16 | * http://www.sssup.it |
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17 | * http://retis.sssup.it |
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18 | * http://shark.sssup.it |
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19 | */ |
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20 | |||
21 | |||
22 | #ifndef __FS_MACCESS_H |
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23 | #define __FS_MACCESS_H |
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24 | |||
25 | /*+ if defined: the following functions are 'dummy' function +*/ |
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26 | #define DUMMY_MACCESS |
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27 | //#undef DUMMY_MACCESS |
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28 | |||
29 | #ifdef DUMMY_MACCESS |
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30 | #include <fs/util.h> |
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31 | #endif |
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32 | |||
33 | /* |
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34 | * port in/out |
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35 | */ |
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36 | |||
37 | #include <ll/i386/hw-instr.h> |
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38 | |||
39 | /* |
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40 | * |
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41 | * address translation |
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42 | * |
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43 | */ |
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44 | |||
45 | //#include <x86/xsys.h> |
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46 | //#define __lin_to_phy(ptr) appl2linear(ptr) |
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47 | //#define __phy_to_lin(addr) linear2appl(addr) |
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48 | |||
49 | #define __lin_to_phy(ptr) ((int)ptr) |
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50 | #define __phy_to_lin(addr) ((void*)addr) |
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51 | |||
52 | /* |
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53 | * |
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54 | * verify read/write access to user space |
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55 | * |
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56 | */ |
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57 | |||
58 | extern int verifyuserread(const void * addr, unsigned long size); |
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59 | extern int verifyuserwrite(const void * addr, unsigned long size); |
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60 | extern int verifyuserreadnolen(const void *addr); |
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61 | |||
62 | #ifdef DUMMY_MACCESS |
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63 | |||
64 | #define __verify_write(x,y) (-1) |
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65 | #define __verify_read(x,y) (-1) |
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66 | #define __verify_read_nolen(x) (1) |
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67 | |||
68 | #else |
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69 | |||
70 | #define __verify_write(x,y) verifyuserwrite(x,y) |
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71 | #define __verify_read(x,y) verifyuserread(x,y) |
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72 | #define __verify_read_nolen(x) verifyuserreadnolen(x) |
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73 | |||
74 | #endif |
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75 | |||
76 | /* |
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77 | * |
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78 | * copy data to/from user space |
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79 | * |
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80 | */ |
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81 | |||
82 | #ifdef DUMMY_MACCESS |
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83 | |||
84 | extern __inline__ void memcpytouser(void *to, void *from, int size) |
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85 | { memcpy(to,from,size); } |
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86 | extern __inline__ void memcpyfromuser(void *to, void *from, int size) |
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87 | { memcpy(to,from,size); } |
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88 | |||
89 | #define declare_buffer(type,name,maxlen) type *name |
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90 | #define init_buffer(name) name=NULL |
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91 | #define __copy_from_user(to,from,size) ((to)=(from)) |
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92 | #define __copy_to_user(to,from,size) memcpy(to,from,size) |
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93 | |||
94 | #else |
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95 | |||
96 | extern void memcpytouser(void *to, void *from, int size); |
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97 | extern void memcpyfromuser(void *to, void *from, int size); |
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98 | |||
99 | #define declare_buffer(type,name,maxlen) type name[maxlen] |
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100 | #define init_buffer(name) |
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101 | #define __copy_from_user(to,from,size) memcpyfromuser(to,from,size) |
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102 | #define __copy_to_user(to,from,size) memcpytouser(to,from,size) |
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103 | |||
104 | #endif |
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105 | |||
106 | /* |
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107 | * |
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108 | * physical resource allocator |
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109 | * |
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110 | */ |
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111 | |||
112 | extern int requestiospace(void *startaddr, int size); |
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113 | extern int releaseiospace(void *startaddr, int size); |
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114 | |||
115 | #ifdef DUMMY_MACCESS |
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116 | |||
117 | #define __request_io_space(x,y) (-1) |
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118 | #define __release_io_space(x,y) |
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119 | |||
120 | #else |
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121 | |||
122 | #define __request_io_space(x,y) requestiospace(x,y) |
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123 | #define __release_io_space(x,y) releaseiospace(x,y) |
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124 | |||
125 | #endif |
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126 | |||
127 | #endif |