[038e1dba] | 1 | /** |
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| 2 | * @file fb_vesa_rm.c |
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| 3 | * |
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| 4 | * @ingroup i386_pc386 |
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| 5 | * |
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| 6 | * @brief FB driver for graphic hardware compatible with VESA Bios Extension |
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| 7 | * Real mode interface utilized |
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| 8 | * Tested on real HW. |
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[067da5c] | 9 | * |
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[038e1dba] | 10 | * Public sources related: |
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| 11 | * - VESA BIOS EXTENSION (VBE) Core Function Standard, Ver: 3.0, Sep 16, 1998 |
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| 12 | * - VESA Enhanced Extended Display Identification Data (E-EDID) Standard |
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| 13 | * Release A, Revision 2, September 25, 2006 |
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[067da5c] | 14 | * |
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[038e1dba] | 15 | * Hardware is completely initialized upon boot of the system. |
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| 16 | * Therefore there is no way to change graphics mode later. |
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[067da5c] | 17 | * |
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[038e1dba] | 18 | * Interrupt 0x10 is used for entering graphics BIOS. |
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[067da5c] | 19 | * |
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[038e1dba] | 20 | * Driver reads parameter from multiboot command line to setup video: |
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| 21 | * "--video=<resX>x<resY>[-<bpp>]" |
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| 22 | * If cmdline parameter is not specified an attempt for obtaining |
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| 23 | * resolution from display attached is made. |
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[067da5c] | 24 | */ |
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| 25 | |
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| 26 | /* |
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[038e1dba] | 27 | * Copyright (c) 2014 - CTU in Prague |
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| 28 | * Jan DoleÅŸal ( dolezj21@fel.cvut.cz ) |
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[067da5c] | 29 | * |
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[038e1dba] | 30 | * The license and distribution terms for this file may be |
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| 31 | * found in the file LICENSE in this distribution or at |
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| 32 | * http://www.rtems.org/license/LICENSE. |
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[067da5c] | 33 | * |
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[038e1dba] | 34 | * The code for rtems_buffer_* functions were greatly |
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| 35 | * inspired or coppied from: |
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| 36 | * - RTEMS fb_cirrus.c - Alexandru-Sever Horin (alex.sever.h@gmail.com) |
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[067da5c] | 37 | */ |
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| 38 | |
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| 39 | #include <bsp.h> |
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| 40 | |
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| 41 | #include <bsp/fb_vesa.h> |
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| 42 | #include <bsp/realmode_int.h> |
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| 43 | |
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| 44 | #include <pthread.h> |
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| 45 | |
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| 46 | #include <rtems/libio.h> |
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| 47 | |
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| 48 | #include <rtems/fb.h> |
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| 49 | #include <rtems/framebuffer.h> |
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| 50 | |
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| 51 | #include <stdlib.h> |
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| 52 | |
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| 53 | #define FB_VESA_NAME "FB_VESA_RM" |
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| 54 | |
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[038e1dba] | 55 | /** |
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| 56 | * @brief Initializes VBE framebuffer during bootup. |
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| 57 | * |
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| 58 | * utilizes switches to real mode interrupts and therefore must be |
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| 59 | * called during bootup before tick is set up and real-time |
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| 60 | * interrupt vectors utilized |
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| 61 | */ |
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[067da5c] | 62 | void vesa_realmode_bootup_init(void); |
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| 63 | |
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| 64 | /* mutex for protection against multiple opens, when called frame_buffer_open */ |
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| 65 | static pthread_mutex_t vesa_mutex = PTHREAD_MUTEX_INITIALIZER; |
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| 66 | |
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| 67 | /* screen information for the VGA driver |
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| 68 | * standard structures - from RTEMS fb interface |
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| 69 | */ |
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| 70 | static struct fb_var_screeninfo fb_var; |
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| 71 | static struct fb_fix_screeninfo fb_fix; |
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| 72 | |
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[d78eac6] | 73 | static uint16_t vbe_used_mode; |
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[067da5c] | 74 | |
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[d78eac6] | 75 | uint32_t VBE_controller_information( VBE_vbe_info_block *info_block, |
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| 76 | uint16_t queried_VBE_Version) |
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[067da5c] | 77 | { |
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| 78 | uint16_t size; |
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[d78eac6] | 79 | VBE_vbe_info_block *VBE_buffer = |
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| 80 | (VBE_vbe_info_block *)i386_get_default_rm_buffer(&size); |
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[067da5c] | 81 | i386_realmode_interrupt_registers parret; |
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| 82 | parret.reg_eax = VBE_RetVBEConInf; |
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| 83 | uint16_t seg, off; |
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| 84 | i386_Physical_to_real(VBE_buffer, &seg, &off); |
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| 85 | parret.reg_edi = (uint32_t)off; |
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| 86 | parret.reg_es = seg; |
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| 87 | /* indicate to graphic's bios that VBE2.0 extended information is desired */ |
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[d78eac6] | 88 | if (queried_VBE_Version >= 0x200) |
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[067da5c] | 89 | { |
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| 90 | strncpy( |
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| 91 | (char *)&VBE_buffer->VbeSignature, |
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| 92 | VBE20plus_SIGNATURE, |
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| 93 | 4*sizeof(size_t) |
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| 94 | ); |
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| 95 | } |
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| 96 | if (i386_real_interrupt_call(INTERRUPT_NO_VIDEO_SERVICES, &parret) == 0) |
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| 97 | return -1; |
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| 98 | if ((parret.reg_eax & 0xFFFF) == |
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| 99 | (VBE_callSuccessful<<8 | VBE_functionSupported)) |
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| 100 | { |
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[d78eac6] | 101 | *info_block = *VBE_buffer; |
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[067da5c] | 102 | } |
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| 103 | return (parret.reg_eax & 0xFFFF); |
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| 104 | } |
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| 105 | |
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[d78eac6] | 106 | uint32_t VBE_mode_information( VBE_mode_info_block *info_block, |
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| 107 | uint16_t mode_number) |
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[067da5c] | 108 | { |
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| 109 | uint16_t size; |
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[d78eac6] | 110 | VBE_mode_info_block *VBE_buffer = |
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| 111 | (VBE_mode_info_block *)i386_get_default_rm_buffer(&size); |
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[067da5c] | 112 | i386_realmode_interrupt_registers parret; |
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| 113 | parret.reg_eax = VBE_RetVBEModInf; |
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[d78eac6] | 114 | parret.reg_ecx = mode_number; |
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[067da5c] | 115 | uint16_t seg, off; |
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| 116 | i386_Physical_to_real(VBE_buffer, &seg, &off); |
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| 117 | parret.reg_edi = (uint32_t)off; |
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| 118 | parret.reg_es = seg; |
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| 119 | if (i386_real_interrupt_call(INTERRUPT_NO_VIDEO_SERVICES, &parret) == 0) |
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| 120 | return -1; |
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| 121 | if ((parret.reg_eax & 0xFFFF) == |
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| 122 | (VBE_callSuccessful<<8 | VBE_functionSupported)) |
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| 123 | { |
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[d78eac6] | 124 | *info_block = *VBE_buffer; |
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[067da5c] | 125 | } |
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| 126 | return (parret.reg_eax & 0xFFFF); |
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| 127 | } |
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| 128 | |
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[d78eac6] | 129 | uint32_t VBE_set_mode( uint16_t mode_number, |
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| 130 | VBE_CRTC_info_block *info_block) |
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[067da5c] | 131 | { |
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| 132 | uint16_t size; |
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[d78eac6] | 133 | VBE_CRTC_info_block *VBE_buffer = |
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| 134 | (VBE_CRTC_info_block *)i386_get_default_rm_buffer(&size); |
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[067da5c] | 135 | i386_realmode_interrupt_registers parret; |
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| 136 | /* copy CRTC */ |
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[d78eac6] | 137 | *VBE_buffer = *info_block; |
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[067da5c] | 138 | parret.reg_eax = VBE_SetVBEMod; |
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[d78eac6] | 139 | parret.reg_ebx = mode_number; |
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[067da5c] | 140 | uint16_t seg, off; |
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| 141 | i386_Physical_to_real(VBE_buffer, &seg, &off); |
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| 142 | parret.reg_edi = (uint32_t)off; |
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| 143 | parret.reg_es = seg; |
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| 144 | if (i386_real_interrupt_call(INTERRUPT_NO_VIDEO_SERVICES, &parret) == 0) |
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| 145 | return -1; |
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| 146 | return (parret.reg_eax & 0xFFFF); |
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| 147 | } |
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| 148 | |
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[d78eac6] | 149 | uint32_t VBE_current_mode(uint16_t *mode_number) |
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[067da5c] | 150 | { |
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| 151 | i386_realmode_interrupt_registers parret; |
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| 152 | parret.reg_eax = VBE_RetCurVBEMod; |
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| 153 | if (i386_real_interrupt_call(INTERRUPT_NO_VIDEO_SERVICES, &parret) == 0) |
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| 154 | return -1; |
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[d78eac6] | 155 | *mode_number = (uint16_t)parret.reg_ebx; |
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[067da5c] | 156 | return (parret.reg_eax & 0xFFFF); |
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| 157 | } |
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| 158 | |
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[d78eac6] | 159 | uint32_t VBE_report_DDC_capabilities(uint16_t controller_unit_number, |
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| 160 | uint8_t *seconds_to_transfer_EDID_block, |
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| 161 | uint8_t *DDC_level_supported) |
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[067da5c] | 162 | { |
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| 163 | i386_realmode_interrupt_registers parret; |
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| 164 | parret.reg_eax = VBE_DisDatCha; |
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| 165 | parret.reg_ebx = VBEDDC_Capabilities; |
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[d78eac6] | 166 | parret.reg_ecx = controller_unit_number; |
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[067da5c] | 167 | parret.reg_edi = 0; |
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| 168 | parret.reg_es = 0; |
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| 169 | if (i386_real_interrupt_call(INTERRUPT_NO_VIDEO_SERVICES, &parret) == 0) |
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| 170 | return -1; |
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[d78eac6] | 171 | *seconds_to_transfer_EDID_block = (uint8_t)parret.reg_ebx >> 8; |
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| 172 | *DDC_level_supported = (uint8_t)parret.reg_ebx; |
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[067da5c] | 173 | return (parret.reg_eax & 0xFFFF); |
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| 174 | } |
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| 175 | |
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[d78eac6] | 176 | uint32_t VBE_read_EDID(uint16_t controller_unit_number, |
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| 177 | uint16_t EDID_block_number, |
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| 178 | EDID_edid1 *buffer) |
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[067da5c] | 179 | { |
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| 180 | uint16_t size; |
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[d78eac6] | 181 | EDID_edid1 *VBE_buffer = (EDID_edid1*)i386_get_default_rm_buffer(&size); |
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[067da5c] | 182 | i386_realmode_interrupt_registers parret; |
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| 183 | parret.reg_eax = VBE_DisDatCha; |
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| 184 | parret.reg_ebx = VBEDDC_ReadEDID; |
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[d78eac6] | 185 | parret.reg_ecx = controller_unit_number; |
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| 186 | parret.reg_edx = EDID_block_number; |
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[067da5c] | 187 | uint16_t seg, off; |
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| 188 | i386_Physical_to_real(VBE_buffer, &seg, &off); |
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| 189 | parret.reg_edi = (uint32_t)off; |
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| 190 | parret.reg_es = seg; |
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| 191 | if (i386_real_interrupt_call(INTERRUPT_NO_VIDEO_SERVICES, &parret) == 0) |
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| 192 | return -1; |
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| 193 | if ((parret.reg_eax & 0xFFFF) == |
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| 194 | (VBE_callSuccessful<<8 | VBE_functionSupported)) |
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| 195 | { |
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| 196 | *buffer = *VBE_buffer; |
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| 197 | } |
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| 198 | return (parret.reg_eax & 0xFFFF); |
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| 199 | } |
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| 200 | |
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[038e1dba] | 201 | /** |
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| 202 | * @brief Basic graphic's mode parameters |
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| 203 | */ |
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[067da5c] | 204 | typedef struct { |
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[038e1dba] | 205 | /** number of the graphic's mode */ |
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[d78eac6] | 206 | uint16_t mode_number; |
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[038e1dba] | 207 | /** number of pixels in one line */ |
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[067da5c] | 208 | uint16_t resX; |
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[038e1dba] | 209 | /** number of lines */ |
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[067da5c] | 210 | uint16_t resY; |
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[038e1dba] | 211 | /** bits per pixel */ |
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[067da5c] | 212 | uint8_t bpp; |
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[d78eac6] | 213 | } Mode_params; |
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[067da5c] | 214 | |
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[038e1dba] | 215 | /** |
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| 216 | * @brief Find mode by resolution in the given list of modes |
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| 217 | * |
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| 218 | * finds mode in \p mode_list of \p list_length length according to resolution |
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| 219 | * given in \p searched_resolution . If bpp is given in that struct as well |
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| 220 | * mode with such color depth and resolution is searched for. Otherwise bpp |
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| 221 | * has to be zero. Mode number found is returned and also filled into |
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| 222 | * \p searched_resolution . bpp is also filled into \p searchedResolution if it |
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| 223 | * was 0 before call. |
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| 224 | * |
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| 225 | * @param[in] mode_list list of modes to be searched |
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| 226 | * @param[in] list_length number of modes in the list |
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| 227 | * @param[in,out] searched_resolution element filled with searched resolution |
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| 228 | * or/and bpp; mode_number is filled in if appropriate mode found |
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| 229 | * @retval mode number satisfying given parameters |
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| 230 | * @retval -1 no suitable mode found |
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| 231 | */ |
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[d78eac6] | 232 | static uint16_t find_mode_by_resolution(Mode_params *mode_list, |
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| 233 | uint8_t list_length, |
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| 234 | Mode_params *searched_resolution) |
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[067da5c] | 235 | { |
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| 236 | uint8_t i = 0; |
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[d78eac6] | 237 | while (i < list_length) |
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[067da5c] | 238 | { |
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[d78eac6] | 239 | if (searched_resolution->resX == mode_list[i].resX && |
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| 240 | searched_resolution->resY == mode_list[i].resY) |
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[067da5c] | 241 | { |
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[d78eac6] | 242 | if (searched_resolution->bpp==0 || |
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| 243 | searched_resolution->bpp==mode_list[i].bpp) |
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[067da5c] | 244 | { |
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[d78eac6] | 245 | searched_resolution->bpp = mode_list[i].bpp; |
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| 246 | searched_resolution->mode_number = mode_list[i].mode_number; |
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| 247 | return mode_list[i].mode_number; |
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[067da5c] | 248 | } |
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| 249 | } |
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| 250 | i++; |
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| 251 | } |
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| 252 | return -1; |
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| 253 | } |
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| 254 | |
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[038e1dba] | 255 | /** |
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| 256 | * @brief Find mode given within command line. |
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| 257 | * |
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| 258 | * Parse command line option "--video=" if available. |
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[067da5c] | 259 | * expected format |
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| 260 | * --video=<resX>x<resY>[-<bpp>] |
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| 261 | * numbers <resX>, <resY> and <bpp> are decadic |
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| 262 | * |
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[038e1dba] | 263 | * @param[in] mode_list list of modes to be searched |
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| 264 | * @param[in] list_length number of modes in the list |
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[067da5c] | 265 | * @retval video mode number to be set |
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[038e1dba] | 266 | * @retval -1 on parsing error or when no suitable mode found |
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[067da5c] | 267 | */ |
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[d78eac6] | 268 | static uint16_t find_mode_using_cmdline(Mode_params *mode_list, |
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| 269 | uint8_t list_length) |
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[067da5c] | 270 | { |
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| 271 | const char* opt; |
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[d78eac6] | 272 | Mode_params cmdline_mode; |
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[067da5c] | 273 | char* endptr; |
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[d78eac6] | 274 | cmdline_mode.bpp = 0; |
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[067da5c] | 275 | opt = bsp_cmdline_arg("--video="); |
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| 276 | if (opt) |
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| 277 | { |
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| 278 | opt += sizeof("--video=")-1; |
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[d78eac6] | 279 | cmdline_mode.resX = strtol(opt, &endptr, 10); |
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[067da5c] | 280 | if (*endptr != 'x') |
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| 281 | { |
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| 282 | return -1; |
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| 283 | } |
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| 284 | opt = endptr+1; |
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[d78eac6] | 285 | cmdline_mode.resY = strtol(opt, &endptr, 10); |
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[067da5c] | 286 | switch (*endptr) |
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| 287 | { |
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| 288 | case '-': |
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| 289 | opt = endptr+1; |
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| 290 | if (strlen(opt) <= 2) |
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[d78eac6] | 291 | cmdline_mode.bpp = strtol(opt, &endptr, 10); |
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[067da5c] | 292 | else |
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| 293 | { |
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[d78eac6] | 294 | cmdline_mode.bpp = strtol(opt, &endptr, 10); |
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[067da5c] | 295 | if (*endptr != ' ') |
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| 296 | { |
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| 297 | return -1; |
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| 298 | } |
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| 299 | } |
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| 300 | case ' ': |
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| 301 | case 0: |
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| 302 | break; |
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| 303 | default: |
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| 304 | return -1; |
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| 305 | } |
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| 306 | |
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[d78eac6] | 307 | if (find_mode_by_resolution(mode_list, list_length, &cmdline_mode) != |
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[067da5c] | 308 | (uint16_t)-1) |
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[d78eac6] | 309 | return cmdline_mode.mode_number; |
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[067da5c] | 310 | } |
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| 311 | return -1; |
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| 312 | } |
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| 313 | |
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[038e1dba] | 314 | /** |
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| 315 | * @brief Find mode number best fitting to monitor attached |
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[067da5c] | 316 | * |
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[038e1dba] | 317 | * @param[in] mode_list list of modes to be searched |
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| 318 | * @param[in] list_length number of modes in the list |
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[067da5c] | 319 | * @retval video mode number to be set |
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[038e1dba] | 320 | * @retval -1 on parsing error or when no suitable mode found |
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[067da5c] | 321 | */ |
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[d78eac6] | 322 | static uint16_t find_mode_using_EDID( Mode_params *mode_list, |
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| 323 | uint8_t list_length) |
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[067da5c] | 324 | { |
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[d78eac6] | 325 | EDID_edid1 edid; |
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[067da5c] | 326 | uint8_t checksum, iterator; |
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| 327 | uint8_t index, j; |
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[d78eac6] | 328 | Mode_params EDIDmode; |
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[067da5c] | 329 | checksum = 0; |
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| 330 | iterator = 0; |
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| 331 | EDIDmode.bpp = 0; |
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[d78eac6] | 332 | if (VBE_read_EDID(0, 0, &edid) != |
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[067da5c] | 333 | (VBE_callSuccessful<<8 | VBE_functionSupported)) |
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| 334 | { |
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| 335 | printk(FB_VESA_NAME " Function 15h (read EDID) not supported.\n"); |
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| 336 | return -1; |
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| 337 | } |
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| 338 | /* version of EDID structure */ |
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| 339 | if (edid.Version == 1) |
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| 340 | { /* EDID version 1 */ |
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[d78eac6] | 341 | while (iterator < sizeof(EDID_edid1)) |
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[067da5c] | 342 | { |
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| 343 | checksum += *((uint8_t *)&edid+iterator); |
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| 344 | iterator++; |
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| 345 | } |
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| 346 | if (checksum) |
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| 347 | /* not implemented: try to read EDID again */ |
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| 348 | printk(FB_VESA_NAME " EDID v1 checksum failed\n"); |
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| 349 | |
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| 350 | /* try to find Detailed Timing Descriptor (defined in BASE EDID) |
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| 351 | in controller mode list; first should be preffered mode */ |
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| 352 | index = 0; |
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| 353 | while (index < 4) |
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| 354 | { |
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| 355 | /* skip if it is monitor descriptor */ |
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| 356 | if (edid.dtd_md[index].md.Flag0[0] == 0 && |
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| 357 | edid.dtd_md[index].md.Flag0[1] == 0 && |
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| 358 | edid.dtd_md[index].md.Flag1 == 0) |
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| 359 | { |
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| 360 | index++; |
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| 361 | continue; |
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| 362 | } |
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[d78eac6] | 363 | EDIDmode.resX = DTD_horizontal_active(&edid.dtd_md[0].dtd); |
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| 364 | EDIDmode.resY = DTD_vertical_active(&edid.dtd_md[0].dtd); |
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| 365 | if (find_mode_by_resolution(mode_list, list_length, &EDIDmode) != |
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[067da5c] | 366 | (uint16_t)-1) |
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[d78eac6] | 367 | return EDIDmode.mode_number; |
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[067da5c] | 368 | |
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| 369 | index++; |
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| 370 | } |
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| 371 | /* try to find Detailed Timing Descriptor (defined in optional EXTENSION |
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| 372 | Blocks) in controller mode list */ |
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| 373 | if (edid.ExtensionFlag > 0) |
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| 374 | { |
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| 375 | /* not implemented */ |
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| 376 | } |
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| 377 | /* try to find CVT (defined in BASE EDID) in controller mode list */ |
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| 378 | index = 1; |
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| 379 | while (index < 4) |
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| 380 | { |
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| 381 | if (edid.dtd_md[index].md.DataTypeTag == |
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| 382 | EDID_DTT_CVT3ByteTimingCodes && |
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| 383 | edid.dtd_md[index].md.Flag0[0] == 0 && |
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| 384 | edid.dtd_md[index].md.Flag0[1] == 0 && |
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| 385 | edid.dtd_md[index].md.Flag1 == 0 && |
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| 386 | edid.dtd_md[index].md.Flag2 == 0) |
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| 387 | { |
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[d78eac6] | 388 | EDID_CVT_timing_codes_3B *cvt = (EDID_CVT_timing_codes_3B *) |
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[067da5c] | 389 | &edid.dtd_md[index].md.DescriptorData[0]; |
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| 390 | j = 0; |
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| 391 | while (j < 4) |
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| 392 | { |
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[d78eac6] | 393 | EDIDmode.resY = edid1_CVT_addressable_lines_high( |
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| 394 | &cvt->cvt[j] |
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| 395 | ); |
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| 396 | switch (edid1_CVT_aspect_ratio(&cvt->cvt[j])) |
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[067da5c] | 397 | { |
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| 398 | case EDID_CVT_AspectRatio_4_3: |
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| 399 | EDIDmode.resX = (EDIDmode.resY*4)/3; |
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| 400 | break; |
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| 401 | case EDID_CVT_AspectRatio_16_9: |
---|
| 402 | EDIDmode.resX = (EDIDmode.resY*16)/9; |
---|
| 403 | break; |
---|
| 404 | case EDID_CVT_AspectRatio_16_10: |
---|
| 405 | EDIDmode.resX = (EDIDmode.resY*16)/10; |
---|
| 406 | break; |
---|
| 407 | case EDID_CVT_AspectRatio_15_9: |
---|
| 408 | EDIDmode.resX = (EDIDmode.resY*15)/9; |
---|
| 409 | break; |
---|
| 410 | } |
---|
| 411 | EDIDmode.resX = (EDIDmode.resX/8)*8; |
---|
[d78eac6] | 412 | if (find_mode_by_resolution( |
---|
| 413 | mode_list, list_length, &EDIDmode) != (uint16_t)-1) |
---|
| 414 | return EDIDmode.mode_number; |
---|
[067da5c] | 415 | |
---|
| 416 | j++; |
---|
| 417 | } |
---|
| 418 | } |
---|
| 419 | index++; |
---|
| 420 | } |
---|
| 421 | /* try to find CVT (defined in optional EXTENSION Blocks) |
---|
| 422 | in controller mode list */ |
---|
| 423 | /* not implemented */ |
---|
| 424 | /* try to find Standard Timings (listed in BASE EDID) |
---|
| 425 | in controller mode list */ |
---|
| 426 | index = 0; |
---|
| 427 | while (index < 8) |
---|
| 428 | { |
---|
| 429 | /* check if descriptor is unused */ |
---|
| 430 | if (*(uint16_t*)&edid.STI[index] == EDID_STI_DescriptorUnused) |
---|
| 431 | { |
---|
| 432 | index++; |
---|
| 433 | continue; |
---|
| 434 | } |
---|
| 435 | EDIDmode.resX = (edid.STI[index].HorizontalActivePixels+31)*8; |
---|
[d78eac6] | 436 | switch (edid.STI[index].ImageAspectRatio_RefreshRate & |
---|
| 437 | EDID1_STI_ImageAspectRatioMask) |
---|
[067da5c] | 438 | { |
---|
| 439 | case EDID_STI_AspectRatio_16_10: |
---|
| 440 | EDIDmode.resY = (EDIDmode.resX*10)/16; |
---|
| 441 | break; |
---|
| 442 | case EDID_STI_AspectRatio_4_3: |
---|
| 443 | EDIDmode.resY = (EDIDmode.resX*3)/4; |
---|
| 444 | break; |
---|
| 445 | case EDID_STI_AspectRatio_5_4: |
---|
| 446 | EDIDmode.resY = (EDIDmode.resX*4)/5; |
---|
| 447 | break; |
---|
| 448 | case EDID_STI_AspectRatio_16_9: |
---|
| 449 | EDIDmode.resY = (EDIDmode.resX*9)/16; |
---|
| 450 | break; |
---|
| 451 | } |
---|
[d78eac6] | 452 | if (find_mode_by_resolution(mode_list, list_length, &EDIDmode) != |
---|
[067da5c] | 453 | (uint16_t)-1) |
---|
[d78eac6] | 454 | return EDIDmode.mode_number; |
---|
[067da5c] | 455 | |
---|
| 456 | index++; |
---|
| 457 | } |
---|
| 458 | /* try to find Standard Timings (listed in optional EXTENSION Blocks) |
---|
| 459 | in controller mode list */ |
---|
| 460 | /* not implemented */ |
---|
| 461 | /* use Established Timings */ |
---|
[d78eac6] | 462 | if (edid1_established_tim(&edid, EST_1280x1024_75Hz)) |
---|
[067da5c] | 463 | { |
---|
| 464 | EDIDmode.resX = 1280; |
---|
| 465 | EDIDmode.resY = 1024; |
---|
| 466 | EDIDmode.bpp = 0; |
---|
[d78eac6] | 467 | if (find_mode_by_resolution(mode_list, list_length, &EDIDmode) != |
---|
[067da5c] | 468 | (uint16_t)-1) |
---|
[d78eac6] | 469 | return EDIDmode.mode_number; |
---|
[067da5c] | 470 | } |
---|
[d78eac6] | 471 | if (edid1_established_tim(&edid, EST_1152x870_75Hz)) |
---|
[067da5c] | 472 | { |
---|
| 473 | EDIDmode.resX = 1152; |
---|
| 474 | EDIDmode.resY = 870; |
---|
| 475 | EDIDmode.bpp = 0; |
---|
[d78eac6] | 476 | if (find_mode_by_resolution(mode_list, list_length, &EDIDmode) != |
---|
[067da5c] | 477 | (uint16_t)-1) |
---|
[d78eac6] | 478 | return EDIDmode.mode_number; |
---|
[067da5c] | 479 | } |
---|
[d78eac6] | 480 | if (edid1_established_tim(&edid, EST_1024x768_75Hz) || |
---|
| 481 | edid1_established_tim(&edid, EST_1024x768_70Hz) || |
---|
| 482 | edid1_established_tim(&edid, EST_1024x768_60Hz) || |
---|
| 483 | edid1_established_tim(&edid, EST_1024x768_87Hz)) |
---|
[067da5c] | 484 | { |
---|
| 485 | EDIDmode.resX = 1024; |
---|
| 486 | EDIDmode.resY = 768; |
---|
| 487 | EDIDmode.bpp = 0; |
---|
[d78eac6] | 488 | if (find_mode_by_resolution(mode_list, list_length, &EDIDmode) != |
---|
[067da5c] | 489 | (uint16_t)-1) |
---|
[d78eac6] | 490 | return EDIDmode.mode_number; |
---|
[067da5c] | 491 | } |
---|
[d78eac6] | 492 | if (edid1_established_tim(&edid, EST_832x624_75Hz)) |
---|
[067da5c] | 493 | { |
---|
| 494 | EDIDmode.resX = 832; |
---|
| 495 | EDIDmode.resY = 624; |
---|
| 496 | EDIDmode.bpp = 0; |
---|
[d78eac6] | 497 | if (find_mode_by_resolution(mode_list, list_length, &EDIDmode) != |
---|
[067da5c] | 498 | (uint16_t)-1) |
---|
[d78eac6] | 499 | return EDIDmode.mode_number; |
---|
[067da5c] | 500 | } |
---|
[d78eac6] | 501 | if (edid1_established_tim(&edid, EST_800x600_60Hz) || |
---|
| 502 | edid1_established_tim(&edid, EST_800x600_56Hz) || |
---|
| 503 | edid1_established_tim(&edid, EST_800x600_75Hz) || |
---|
| 504 | edid1_established_tim(&edid, EST_800x600_72Hz)) |
---|
[067da5c] | 505 | { |
---|
| 506 | EDIDmode.resX = 800; |
---|
| 507 | EDIDmode.resY = 600; |
---|
| 508 | EDIDmode.bpp = 0; |
---|
[d78eac6] | 509 | if (find_mode_by_resolution(mode_list, list_length, &EDIDmode) != |
---|
[067da5c] | 510 | (uint16_t)-1) |
---|
[d78eac6] | 511 | return EDIDmode.mode_number; |
---|
[067da5c] | 512 | } |
---|
[d78eac6] | 513 | if (edid1_established_tim(&edid, EST_720x400_88Hz) || |
---|
| 514 | edid1_established_tim(&edid, EST_720x400_70Hz)) |
---|
[067da5c] | 515 | { |
---|
| 516 | EDIDmode.resX = 720; |
---|
| 517 | EDIDmode.resY = 400; |
---|
| 518 | EDIDmode.bpp = 0; |
---|
[d78eac6] | 519 | if (find_mode_by_resolution(mode_list, list_length, &EDIDmode) != |
---|
[067da5c] | 520 | (uint16_t)-1) |
---|
[d78eac6] | 521 | return EDIDmode.mode_number; |
---|
[067da5c] | 522 | } |
---|
[d78eac6] | 523 | if (edid1_established_tim(&edid, EST_640x480_75Hz) || |
---|
| 524 | edid1_established_tim(&edid, EST_640x480_72Hz) || |
---|
| 525 | edid1_established_tim(&edid, EST_640x480_67Hz) || |
---|
| 526 | edid1_established_tim(&edid, EST_640x480_60Hz)) |
---|
[067da5c] | 527 | { |
---|
| 528 | EDIDmode.resX = 640; |
---|
| 529 | EDIDmode.resY = 480; |
---|
| 530 | EDIDmode.bpp = 0; |
---|
[d78eac6] | 531 | if (find_mode_by_resolution(mode_list, list_length, &EDIDmode) != |
---|
[067da5c] | 532 | (uint16_t)-1) |
---|
[d78eac6] | 533 | return EDIDmode.mode_number; |
---|
[067da5c] | 534 | } |
---|
| 535 | } |
---|
| 536 | else |
---|
| 537 | printk(FB_VESA_NAME " error reading EDID: unsupported version\n"); |
---|
| 538 | return (uint16_t)-1; |
---|
| 539 | } |
---|
| 540 | |
---|
| 541 | void vesa_realmode_bootup_init(void) |
---|
| 542 | { |
---|
| 543 | uint32_t vbe_ret_val; |
---|
| 544 | uint16_t size; |
---|
[d78eac6] | 545 | VBE_vbe_info_block *vib = (VBE_vbe_info_block *) |
---|
[067da5c] | 546 | i386_get_default_rm_buffer(&size); |
---|
[d78eac6] | 547 | vbe_ret_val = VBE_controller_information(vib, 0x300); |
---|
[067da5c] | 548 | if (vbe_ret_val == -1) |
---|
| 549 | { |
---|
| 550 | printk(FB_VESA_NAME " error calling real mode interrupt.\n"); |
---|
| 551 | return; |
---|
| 552 | } |
---|
| 553 | if (vbe_ret_val != (VBE_callSuccessful<<8 | VBE_functionSupported)) |
---|
| 554 | { |
---|
| 555 | printk(FB_VESA_NAME " Function 00h (read VBE info block)" |
---|
| 556 | "not supported.\n"); |
---|
| 557 | } |
---|
| 558 | /* Helper array is later filled with mode numbers and their parameters |
---|
| 559 | sorted from the biggest values to the smalest where priorities of |
---|
| 560 | parameters are from the highest to the lowest: resolution X, |
---|
| 561 | resolution Y, bits per pixel. |
---|
| 562 | The array is used for search the monitor provided parameters in EDID |
---|
| 563 | structure and if found we set such mode using corresponding |
---|
| 564 | VESA function. */ |
---|
| 565 | #define MAX_NO_OF_SORTED_MODES 100 |
---|
[d78eac6] | 566 | Mode_params sorted_mode_params[MAX_NO_OF_SORTED_MODES]; |
---|
[067da5c] | 567 | |
---|
| 568 | uint16_t *vmpSegOff = (uint16_t *)&vib->VideoModePtr; |
---|
| 569 | uint16_t *modeNOPtr = (uint16_t*) |
---|
| 570 | i386_Real_to_physical(*(vmpSegOff+1), *vmpSegOff); |
---|
| 571 | uint16_t iterator = 0; |
---|
| 572 | if (*(uint16_t*)vib->VideoModePtr == VBE_STUB_VideoModeList) |
---|
| 573 | { |
---|
| 574 | printk(FB_VESA_NAME " VBE Core not implemented!\n"); |
---|
| 575 | } |
---|
| 576 | else |
---|
| 577 | { |
---|
| 578 | /* prepare list of modes */ |
---|
| 579 | while (*(modeNOPtr+iterator) != VBE_END_OF_VideoModeList && |
---|
| 580 | *(modeNOPtr+iterator) != 0) |
---|
| 581 | { /* some bios implementations ends the list incorrectly with 0 */ |
---|
| 582 | if (iterator < MAX_NO_OF_SORTED_MODES) |
---|
| 583 | { |
---|
[d78eac6] | 584 | sorted_mode_params[iterator].mode_number =*(modeNOPtr+iterator); |
---|
[067da5c] | 585 | iterator ++; |
---|
| 586 | } |
---|
| 587 | else |
---|
| 588 | break; |
---|
| 589 | } |
---|
| 590 | if (iterator < MAX_NO_OF_SORTED_MODES) |
---|
[d78eac6] | 591 | sorted_mode_params[iterator].mode_number = 0; |
---|
[067da5c] | 592 | } |
---|
| 593 | |
---|
[d78eac6] | 594 | VBE_mode_info_block *mib = (VBE_mode_info_block *) |
---|
[067da5c] | 595 | i386_get_default_rm_buffer(&size); |
---|
| 596 | iterator = 0; |
---|
| 597 | uint8_t nextFilteredMode = 0; |
---|
| 598 | uint16_t required_mode_attributes = VBE_modSupInHWMask | |
---|
| 599 | VBE_ColorModeMask | VBE_GraphicsModeMask | VBE_LinFraBufModeAvaiMask; |
---|
| 600 | /* get parameters of modes and filter modes according to set |
---|
| 601 | required parameters */ |
---|
| 602 | while (iterator < MAX_NO_OF_SORTED_MODES && |
---|
[d78eac6] | 603 | sorted_mode_params[iterator].mode_number!=0) |
---|
[067da5c] | 604 | { |
---|
[d78eac6] | 605 | VBE_mode_information(mib, sorted_mode_params[iterator].mode_number); |
---|
[067da5c] | 606 | if ((mib->ModeAttributes&required_mode_attributes) == |
---|
| 607 | required_mode_attributes) |
---|
| 608 | { |
---|
[d78eac6] | 609 | sorted_mode_params[nextFilteredMode].mode_number = |
---|
| 610 | sorted_mode_params[iterator].mode_number; |
---|
| 611 | sorted_mode_params[nextFilteredMode].resX = mib->XResolution; |
---|
| 612 | sorted_mode_params[nextFilteredMode].resY = mib->YResolution; |
---|
| 613 | sorted_mode_params[nextFilteredMode].bpp = mib->BitsPerPixel; |
---|
[067da5c] | 614 | nextFilteredMode ++; |
---|
| 615 | } |
---|
| 616 | iterator ++; |
---|
| 617 | } |
---|
[d78eac6] | 618 | sorted_mode_params[nextFilteredMode].mode_number = 0; |
---|
[067da5c] | 619 | |
---|
[d78eac6] | 620 | uint8_t number_of_modes = nextFilteredMode; |
---|
[067da5c] | 621 | /* sort filtered modes */ |
---|
[d78eac6] | 622 | Mode_params modeXchgPlace; |
---|
[067da5c] | 623 | iterator = 0; |
---|
| 624 | uint8_t j; |
---|
| 625 | uint8_t idxBestMode; |
---|
[d78eac6] | 626 | while (iterator < number_of_modes) |
---|
[067da5c] | 627 | { |
---|
| 628 | idxBestMode = iterator; |
---|
| 629 | j = iterator+1; |
---|
[d78eac6] | 630 | while (j < number_of_modes) |
---|
[067da5c] | 631 | { |
---|
[d78eac6] | 632 | if (sorted_mode_params[j].resX > |
---|
| 633 | sorted_mode_params[idxBestMode].resX) |
---|
[067da5c] | 634 | idxBestMode = j; |
---|
[d78eac6] | 635 | else if (sorted_mode_params[j].resX == |
---|
| 636 | sorted_mode_params[idxBestMode].resX) |
---|
[067da5c] | 637 | { |
---|
[d78eac6] | 638 | if (sorted_mode_params[j].resY > |
---|
| 639 | sorted_mode_params[idxBestMode].resY) |
---|
[067da5c] | 640 | idxBestMode = j; |
---|
[d78eac6] | 641 | else if (sorted_mode_params[j].resY == |
---|
| 642 | sorted_mode_params[idxBestMode].resY) |
---|
[067da5c] | 643 | { |
---|
[d78eac6] | 644 | if (sorted_mode_params[j].bpp > |
---|
| 645 | sorted_mode_params[idxBestMode].bpp) |
---|
[067da5c] | 646 | idxBestMode = j; |
---|
| 647 | } |
---|
| 648 | } |
---|
| 649 | j++; |
---|
| 650 | } |
---|
| 651 | if (idxBestMode != iterator) |
---|
| 652 | { |
---|
[d78eac6] | 653 | modeXchgPlace = sorted_mode_params[iterator]; |
---|
| 654 | sorted_mode_params[iterator] = sorted_mode_params[idxBestMode]; |
---|
| 655 | sorted_mode_params[idxBestMode] = modeXchgPlace; |
---|
[067da5c] | 656 | } |
---|
| 657 | iterator++; |
---|
| 658 | } |
---|
| 659 | |
---|
| 660 | /* first search for video argument in multiboot options */ |
---|
[d78eac6] | 661 | vbe_used_mode = find_mode_using_cmdline(sorted_mode_params, |
---|
| 662 | number_of_modes); |
---|
| 663 | if (vbe_used_mode == (uint16_t)-1) |
---|
[067da5c] | 664 | { |
---|
| 665 | printk(FB_VESA_NAME " video on command line not provided" |
---|
| 666 | "\n\ttrying EDID ...\n"); |
---|
| 667 | /* second search monitor for good resolution */ |
---|
[d78eac6] | 668 | vbe_used_mode = find_mode_using_EDID(sorted_mode_params, |
---|
| 669 | number_of_modes); |
---|
| 670 | if (vbe_used_mode == (uint16_t)-1) |
---|
[067da5c] | 671 | { |
---|
| 672 | printk(FB_VESA_NAME" monitor's EDID video parameters not supported" |
---|
| 673 | "\n\tusing mode with highest resolution, bpp\n"); |
---|
| 674 | /* third set highest values */ |
---|
[d78eac6] | 675 | vbe_used_mode = sorted_mode_params[0].mode_number; |
---|
[067da5c] | 676 | } |
---|
| 677 | } |
---|
| 678 | |
---|
| 679 | /* fill framebuffer structs with info about selected mode */ |
---|
[d78eac6] | 680 | vbe_ret_val = VBE_mode_information(mib, vbe_used_mode); |
---|
[067da5c] | 681 | if ((vbe_ret_val&0xff)!=VBE_functionSupported || |
---|
| 682 | (vbe_ret_val>>8)!=VBE_callSuccessful) |
---|
| 683 | { |
---|
| 684 | printk(FB_VESA_NAME " Cannot get mode info anymore. ax=0x%x\n", |
---|
| 685 | vbe_ret_val); |
---|
| 686 | } |
---|
| 687 | |
---|
| 688 | fb_var.xres = mib->XResolution; |
---|
| 689 | fb_var.yres = mib->YResolution; |
---|
| 690 | fb_var.bits_per_pixel = mib->BitsPerPixel; |
---|
| 691 | fb_var.red.offset = mib->LinRedFieldPosition; |
---|
| 692 | fb_var.red.length = mib->LinRedMaskSize; |
---|
| 693 | fb_var.red.msb_right = 0; |
---|
| 694 | fb_var.green.offset = mib->LinGreenFieldPosition; |
---|
| 695 | fb_var.green.length = mib->LinGreenMaskSize; |
---|
| 696 | fb_var.green.msb_right = 0; |
---|
| 697 | fb_var.blue.offset = mib->LinBlueFieldPosition; |
---|
| 698 | fb_var.blue.length = mib->LinBlueMaskSize; |
---|
| 699 | fb_var.blue.msb_right = 0; |
---|
| 700 | fb_var.transp.offset = mib->LinRsvdFieldPosition; |
---|
| 701 | fb_var.transp.length = mib->LinRsvdMaskSize; |
---|
| 702 | fb_var.transp.msb_right =0; |
---|
| 703 | |
---|
| 704 | fb_fix.smem_start = (char *)mib->PhysBasePtr; |
---|
| 705 | fb_fix.line_length = mib->LinBytesPerScanLine; |
---|
| 706 | fb_fix.smem_len = fb_fix.line_length*fb_var.yres; |
---|
| 707 | fb_fix.type = FB_TYPE_PACKED_PIXELS; |
---|
| 708 | if (fb_var.bits_per_pixel < 24) |
---|
| 709 | fb_fix.visual = FB_VISUAL_DIRECTCOLOR; |
---|
| 710 | else |
---|
| 711 | fb_fix.visual = FB_VISUAL_TRUECOLOR; |
---|
| 712 | |
---|
| 713 | /* set selected mode */ |
---|
[d78eac6] | 714 | vbe_ret_val = VBE_set_mode(vbe_used_mode | VBE_linearFlatFrameBufMask, |
---|
| 715 | (VBE_CRTC_info_block *)(i386_get_default_rm_buffer(&size))); |
---|
[067da5c] | 716 | if (vbe_ret_val>>8 == VBE_callFailed) |
---|
| 717 | printk(FB_VESA_NAME " VBE: Requested mode is not available."); |
---|
| 718 | |
---|
| 719 | if ((vbe_ret_val&0xff)!= (VBE_functionSupported | VBE_callSuccessful<<8)) |
---|
| 720 | printk(FB_VESA_NAME " Call to function 2h (set VBE mode) failed. " |
---|
| 721 | "ax=0x%x\n", vbe_ret_val); |
---|
| 722 | |
---|
| 723 | vib = (void *) 0; |
---|
| 724 | mib = (void *) 0; |
---|
| 725 | } |
---|
| 726 | |
---|
| 727 | /* |
---|
| 728 | * fb_vesa device driver INITIALIZE entry point. |
---|
| 729 | */ |
---|
| 730 | rtems_device_driver |
---|
| 731 | frame_buffer_initialize( |
---|
| 732 | rtems_device_major_number major, |
---|
| 733 | rtems_device_minor_number minor, |
---|
| 734 | void *arg |
---|
| 735 | ) |
---|
| 736 | { |
---|
| 737 | rtems_status_code status; |
---|
| 738 | |
---|
| 739 | printk(FB_VESA_NAME " frame buffer -- driver initializing..\n" ); |
---|
| 740 | |
---|
| 741 | /* |
---|
| 742 | * Register the device. |
---|
| 743 | */ |
---|
| 744 | status = rtems_io_register_name(FRAMEBUFFER_DEVICE_0_NAME, major, 0); |
---|
| 745 | if (status != RTEMS_SUCCESSFUL) |
---|
| 746 | { |
---|
| 747 | printk("Error registering " FRAMEBUFFER_DEVICE_0_NAME |
---|
| 748 | " - " FB_VESA_NAME " frame buffer device!\n"); |
---|
| 749 | rtems_fatal_error_occurred( status ); |
---|
| 750 | } |
---|
| 751 | |
---|
| 752 | return RTEMS_SUCCESSFUL; |
---|
| 753 | } |
---|
| 754 | |
---|
| 755 | /* |
---|
| 756 | * fb_vesa device driver OPEN entry point |
---|
| 757 | */ |
---|
| 758 | rtems_device_driver |
---|
| 759 | frame_buffer_open( |
---|
| 760 | rtems_device_major_number major, |
---|
| 761 | rtems_device_minor_number minor, |
---|
| 762 | void *arg |
---|
| 763 | ) |
---|
| 764 | { |
---|
| 765 | printk( FB_VESA_NAME " open device\n" ); |
---|
| 766 | |
---|
| 767 | if (pthread_mutex_trylock(&vesa_mutex) != 0) |
---|
| 768 | { |
---|
| 769 | printk( FB_VESA_NAME " could not lock vesa_mutex\n" ); |
---|
| 770 | |
---|
| 771 | return RTEMS_UNSATISFIED; |
---|
| 772 | } |
---|
| 773 | |
---|
| 774 | return RTEMS_SUCCESSFUL; |
---|
| 775 | |
---|
| 776 | } |
---|
| 777 | |
---|
| 778 | /* |
---|
| 779 | * fb_vesa device driver CLOSE entry point |
---|
| 780 | */ |
---|
| 781 | rtems_device_driver |
---|
| 782 | frame_buffer_close( |
---|
| 783 | rtems_device_major_number major, |
---|
| 784 | rtems_device_minor_number minor, |
---|
| 785 | void *arg |
---|
| 786 | ) |
---|
| 787 | { |
---|
| 788 | printk( FB_VESA_NAME " close device\n" ); |
---|
| 789 | if (pthread_mutex_unlock(&vesa_mutex) == 0) |
---|
| 790 | { |
---|
| 791 | /* restore previous state. for VGA this means return to text mode. |
---|
| 792 | * leave out if graphics hardware has been initialized in |
---|
| 793 | * frame_buffer_initialize() */ |
---|
| 794 | |
---|
| 795 | printk(FB_VESA_NAME ": close called.\n" ); |
---|
| 796 | return RTEMS_SUCCESSFUL; |
---|
| 797 | } |
---|
| 798 | |
---|
| 799 | return RTEMS_UNSATISFIED; |
---|
| 800 | } |
---|
| 801 | |
---|
| 802 | /* |
---|
| 803 | * fb_vesa device driver READ entry point. |
---|
| 804 | */ |
---|
| 805 | rtems_device_driver |
---|
| 806 | frame_buffer_read( |
---|
| 807 | rtems_device_major_number major, |
---|
| 808 | rtems_device_minor_number minor, |
---|
| 809 | void *arg |
---|
| 810 | ) |
---|
| 811 | { |
---|
| 812 | printk( FB_VESA_NAME " read device\n" ); |
---|
| 813 | rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *)arg; |
---|
| 814 | rw_args->bytes_moved = |
---|
| 815 | ((rw_args->offset + rw_args->count) > fb_fix.smem_len ) ? |
---|
| 816 | (fb_fix.smem_len - rw_args->offset) : |
---|
| 817 | rw_args->count; |
---|
| 818 | memcpy(rw_args->buffer, (const void *) |
---|
| 819 | (fb_fix.smem_start + rw_args->offset), rw_args->bytes_moved); |
---|
| 820 | return RTEMS_SUCCESSFUL; |
---|
| 821 | } |
---|
| 822 | |
---|
| 823 | /* |
---|
| 824 | * frame_vesa device driver WRITE entry point. |
---|
| 825 | */ |
---|
| 826 | rtems_device_driver |
---|
| 827 | frame_buffer_write( |
---|
| 828 | rtems_device_major_number major, |
---|
| 829 | rtems_device_minor_number minor, |
---|
| 830 | void *arg |
---|
| 831 | ) |
---|
| 832 | { |
---|
| 833 | printk( FB_VESA_NAME " write device\n" ); |
---|
| 834 | rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *)arg; |
---|
| 835 | rw_args->bytes_moved = |
---|
| 836 | ((rw_args->offset + rw_args->count) > fb_fix.smem_len ) ? |
---|
| 837 | (fb_fix.smem_len - rw_args->offset) : |
---|
| 838 | rw_args->count; |
---|
| 839 | memcpy( (void *) (fb_fix.smem_start + rw_args->offset), |
---|
| 840 | rw_args->buffer, rw_args->bytes_moved); |
---|
| 841 | return RTEMS_SUCCESSFUL; |
---|
| 842 | } |
---|
| 843 | |
---|
| 844 | static int get_fix_screen_info( struct fb_fix_screeninfo *info ) |
---|
| 845 | { |
---|
| 846 | *info = fb_fix; |
---|
| 847 | return 0; |
---|
| 848 | } |
---|
| 849 | |
---|
| 850 | static int get_var_screen_info( struct fb_var_screeninfo *info ) |
---|
| 851 | { |
---|
| 852 | *info = fb_var; |
---|
| 853 | return 0; |
---|
| 854 | } |
---|
| 855 | |
---|
| 856 | /* |
---|
| 857 | * IOCTL entry point -- This method is called to carry |
---|
| 858 | * all services of this interface. |
---|
| 859 | */ |
---|
| 860 | rtems_device_driver |
---|
| 861 | frame_buffer_control( |
---|
| 862 | rtems_device_major_number major, |
---|
| 863 | rtems_device_minor_number minor, |
---|
| 864 | void *arg |
---|
| 865 | ) |
---|
| 866 | { |
---|
| 867 | rtems_libio_ioctl_args_t *args = arg; |
---|
| 868 | |
---|
| 869 | printk( FB_VESA_NAME " ioctl called, cmd=%x\n", args->command ); |
---|
| 870 | printk("fbxres %d, fbyres %d\n", fb_var.xres, fb_var.yres); |
---|
| 871 | printk("fbbpp %d\n", fb_var.bits_per_pixel); |
---|
| 872 | |
---|
| 873 | switch (args->command) |
---|
| 874 | { |
---|
| 875 | case FBIOGET_FSCREENINFO: |
---|
| 876 | args->ioctl_return = |
---|
| 877 | get_fix_screen_info( ( struct fb_fix_screeninfo * ) args->buffer ); |
---|
| 878 | break; |
---|
| 879 | case FBIOGET_VSCREENINFO: |
---|
| 880 | args->ioctl_return = |
---|
| 881 | get_var_screen_info( ( struct fb_var_screeninfo * ) args->buffer ); |
---|
| 882 | break; |
---|
| 883 | case FBIOPUT_VSCREENINFO: |
---|
| 884 | /* not implemented yet */ |
---|
| 885 | args->ioctl_return = -1; |
---|
| 886 | return RTEMS_UNSATISFIED; |
---|
| 887 | case FBIOGETCMAP: |
---|
| 888 | /* no palette - truecolor mode */ |
---|
| 889 | args->ioctl_return = -1; |
---|
| 890 | return RTEMS_UNSATISFIED; |
---|
| 891 | case FBIOPUTCMAP: |
---|
| 892 | /* no palette - truecolor mode */ |
---|
| 893 | args->ioctl_return = -1; |
---|
| 894 | return RTEMS_UNSATISFIED; |
---|
| 895 | default: |
---|
| 896 | args->ioctl_return = 0; |
---|
| 897 | break; |
---|
| 898 | } |
---|
| 899 | return RTEMS_SUCCESSFUL; |
---|
| 900 | } |
---|