1 | /* |
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2 | ///////////////////////////////////////////////////////////////////////////// |
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3 | // $Header$ |
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4 | // |
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5 | // Copyright (c) 2000 - Rosimildo da Silva |
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6 | // |
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7 | // MODULE DESCRIPTION: |
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8 | // Wrapper API around the ioctls calls for the Micro FrameBuffer |
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9 | // interface for Embedded Systems |
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10 | // |
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11 | // All functions returns 0 on success. Any other value should be |
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12 | // decoded as an error. A list of errors will be created over time. |
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13 | // |
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14 | // MODIFICATION/HISTORY: |
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15 | // |
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16 | // $Log$ |
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17 | // Revision 1.1 2000/08/30 08:21:24 joel |
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18 | // 2000-08-26 Rosimildo da Silva <rdasilva@connecttel.com> |
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19 | // |
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20 | // * Added generic Micro FrameBuffer interface for MicroWindows. |
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21 | // This interface allows MicroWindows to under RTEMS. A sample |
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22 | // driver has been developed for the pc386 BSP. See |
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23 | // pc386/fb_vga.c as a sample. |
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24 | // * Added Uniform Input Device interface for MicroWindows. |
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25 | // See PC386 bsp for sample drivers for mouse and keyboard (console). |
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26 | // * mw-bf: New directory. |
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27 | // * Makefile.am, configure.in, wrapup/Makefile.am: Account for mw-fb. |
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28 | // * mw-fb/Makefile.am: New file. |
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29 | // * mw-fb/mw_fb.c: New file. |
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30 | // * mw-fb/mw_fb.h: New file. |
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31 | // * mw-fb/mw_uid.c: New file. |
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32 | // * mw-fb/mw_uid.h: New file. |
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33 | // |
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34 | // |
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35 | ///////////////////////////////////////////////////////////////////////////// |
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36 | */ |
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37 | |
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38 | #ifdef HAVE_CONFIG_H |
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39 | #include "config.h" |
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40 | #endif |
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41 | |
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42 | #include <sys/ioctl.h> |
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43 | #include <rtems/mw_fb.h> |
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44 | |
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45 | |
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46 | /* |
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47 | * This function returns the information regarding the display. |
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48 | * It is called just after the driver be opened to get all needed |
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49 | * information about the driver. No change in the mode of operation |
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50 | * of the driver is done with this call. |
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51 | */ |
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52 | int ufb_get_screen_info( int fd, struct fb_screeninfo *info ) |
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53 | { |
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54 | return ioctl( fd, FB_SCREENINFO, ( void *)info); |
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55 | } |
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56 | |
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57 | |
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58 | |
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59 | /* |
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60 | * Returns the mode of the graphics subsystem |
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61 | */ |
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62 | int ufb_get_mode( int fd, int *mode ) |
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63 | { |
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64 | struct fb_exec_function exec; |
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65 | exec.func_no = FB_FUNC_GET_MODE; |
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66 | exec.param = ( void *)mode; |
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67 | return ioctl( fd, FB_EXEC_FUNCTION , ( void *)&exec ); |
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68 | } |
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69 | |
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70 | |
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71 | /* |
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72 | * Returns the current collor pallete |
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73 | */ |
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74 | int ufb_get_palette( int fd, struct fb_cmap *color ) |
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75 | { |
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76 | return ioctl( fd, FB_GETPALETTE, ( void *)color ); |
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77 | } |
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78 | |
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79 | |
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80 | /* |
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81 | * Set the current collor pallete |
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82 | */ |
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83 | int ufb_set_palette( int fd, struct fb_cmap *color ) |
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84 | { |
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85 | return ioctl( fd, FB_SETPALETTE, ( void *)color ); |
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86 | } |
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87 | |
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88 | /* |
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89 | * Does all necessary initialization to put the device in |
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90 | * graphics mode |
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91 | */ |
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92 | int ufb_enter_graphics( int fd, int mode ) |
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93 | { |
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94 | struct fb_exec_function exec; |
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95 | exec.func_no = FB_FUNC_ENTER_GRAPHICS; |
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96 | exec.param = ( void *)mode; |
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97 | return ioctl( fd, FB_EXEC_FUNCTION , ( void *)&exec ); |
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98 | } |
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99 | |
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100 | |
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101 | /* |
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102 | * Switch the device back to the default mode of operation. |
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103 | * In most cases it put the device back to plain text mode. |
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104 | */ |
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105 | int ufb_exit_graphics( int fd ) |
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106 | { |
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107 | struct fb_exec_function exec; |
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108 | exec.func_no = FB_FUNC_EXIT_GRAPHICS; |
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109 | exec.param = 0; |
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110 | return ioctl( fd, FB_EXEC_FUNCTION , ( void *)&exec ); |
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111 | } |
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112 | |
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113 | /* |
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114 | * Tell the driver that the "virtual buffer" is dirty, and an update |
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115 | * of it to the real device, maybe a serial/parallel LCD or whatever |
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116 | * is required |
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117 | */ |
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118 | int ufb_buffer_is_dirty( int fd ) |
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119 | { |
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120 | struct fb_exec_function exec; |
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121 | exec.func_no = FB_FUNC_IS_DIRTY; |
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122 | exec.param = 0; |
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123 | return ioctl( fd, FB_EXEC_FUNCTION , ( void *)&exec ); |
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124 | } |
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125 | |
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126 | |
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127 | |
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128 | /* |
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129 | * This function maps the physical ( kernel mode ) address of the framebuffer device |
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130 | * and maps it to the user space address. |
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131 | */ |
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132 | int ufb_mmap_to_user_space( int fd, void **fb_addr, void *physical_addr, unsigned long size ) |
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133 | { |
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134 | #ifdef __rtems__ |
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135 | /* RTEMS runs in ring 0, and there is no distinction between |
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136 | user space and kernel space, so we just return the same |
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137 | pointer to the caller. |
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138 | */ |
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139 | *fb_addr = physical_addr; |
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140 | return 0; |
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141 | #else |
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142 | /* other kernels might want to map it to the user space, |
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143 | maybe using mmap() |
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144 | */ |
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145 | return 0; |
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146 | #endif |
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147 | |
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148 | } |
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149 | |
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150 | |
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151 | /* |
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152 | * This function unmaps memory of the FB from the user's space |
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153 | */ |
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154 | int ufb_unmmap_from_user_space( int fd, void *addr ) |
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155 | { |
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156 | return 0; |
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157 | } |
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158 | |
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