1 |
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2 | /*
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3 | * XFree86 int10 module
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4 | * execute BIOS int 10h calls in x86 real mode environment
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5 | * Copyright 1999 Egbert Eich
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6 | */
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7 |
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8 | #ifndef _XF86INT10_H
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9 | #define _XF86INT10_H
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10 |
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11 | #include <X11/Xmd.h>
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12 | #include <X11/Xdefs.h>
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13 | #include "xf86Pci.h"
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14 |
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15 | #define SEG_ADDR(x) (((x) >> 4) & 0x00F000)
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16 | #define SEG_OFF(x) ((x) & 0x0FFFF)
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17 |
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18 | #define SET_BIOS_SCRATCH 0x1
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19 | #define RESTORE_BIOS_SCRATCH 0x2
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20 |
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21 | /* int10 info structure */
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22 | typedef struct {
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23 | int entityIndex;
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24 | uint16_t BIOSseg;
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25 | uint16_t inb40time;
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26 | ScrnInfoPtr pScrn;
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27 | void *cpuRegs;
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28 | char *BIOSScratch;
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29 | int Flags;
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30 | void *private;
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31 | struct _int10Mem *mem;
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32 | int num;
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33 | int ax;
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34 | int bx;
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35 | int cx;
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36 | int dx;
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37 | int si;
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38 | int di;
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39 | int es;
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40 | int bp;
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41 | int flags;
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42 | int stackseg;
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43 | struct pci_device *dev;
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44 | struct pci_io_handle *io;
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45 | } xf86Int10InfoRec, *xf86Int10InfoPtr;
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46 |
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47 | typedef struct _int10Mem {
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48 | uint8_t (*rb) (xf86Int10InfoPtr, int);
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49 | uint16_t (*rw) (xf86Int10InfoPtr, int);
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50 | uint32_t (*rl) (xf86Int10InfoPtr, int);
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51 | void (*wb) (xf86Int10InfoPtr, int, uint8_t);
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52 | void (*ww) (xf86Int10InfoPtr, int, uint16_t);
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53 | void (*wl) (xf86Int10InfoPtr, int, uint32_t);
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54 | } int10MemRec, *int10MemPtr;
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55 |
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56 | typedef struct {
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57 | uint8_t save_msr;
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58 | uint8_t save_pos102;
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59 | uint8_t save_vse;
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60 | uint8_t save_46e8;
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61 | } legacyVGARec, *legacyVGAPtr;
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62 |
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63 | /* OS dependent functions */
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64 | extern _X_EXPORT xf86Int10InfoPtr xf86InitInt10(int entityIndex);
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65 | extern _X_EXPORT xf86Int10InfoPtr xf86ExtendedInitInt10(int entityIndex,
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66 | int Flags);
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67 | extern _X_EXPORT void xf86FreeInt10(xf86Int10InfoPtr pInt);
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68 | extern _X_EXPORT void *xf86Int10AllocPages(xf86Int10InfoPtr pInt, int num,
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69 | int *off);
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70 | extern _X_EXPORT void xf86Int10FreePages(xf86Int10InfoPtr pInt, void *pbase,
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71 | int num);
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72 | extern _X_EXPORT void *xf86int10Addr(xf86Int10InfoPtr pInt, uint32_t addr);
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73 |
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74 | /* x86 executor related functions */
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75 | extern _X_EXPORT void xf86ExecX86int10(xf86Int10InfoPtr pInt);
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76 |
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77 | #ifdef _INT10_PRIVATE
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78 |
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79 | #define I_S_DEFAULT_INT_VECT 0xFF065
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80 | #define SYS_SIZE 0x100000
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81 | #define SYS_BIOS 0xF0000
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82 | #if 1
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83 | #define BIOS_SIZE 0x10000
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84 | #else /* a bug in DGUX requires this - let's try it */
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85 | #define BIOS_SIZE (0x10000 - 1)
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86 | #endif
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87 | #define LOW_PAGE_SIZE 0x600
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88 | #define V_RAM 0xA0000
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89 | #define VRAM_SIZE 0x20000
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90 | #define V_BIOS_SIZE 0x10000
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91 | #define V_BIOS 0xC0000
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92 | #define BIOS_SCRATCH_OFF 0x449
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93 | #define BIOS_SCRATCH_END 0x466
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94 | #define BIOS_SCRATCH_LEN (BIOS_SCRATCH_END - BIOS_SCRATCH_OFF + 1)
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95 | #define HIGH_MEM V_BIOS
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96 | #define HIGH_MEM_SIZE (SYS_BIOS - HIGH_MEM)
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97 | #define SEG_ADR(type, seg, reg) type((seg << 4) + (X86_##reg))
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98 | #define SEG_EADR(type, seg, reg) type((seg << 4) + (X86_E##reg))
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99 |
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100 | #define X86_TF_MASK 0x00000100
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101 | #define X86_IF_MASK 0x00000200
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102 | #define X86_IOPL_MASK 0x00003000
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103 | #define X86_NT_MASK 0x00004000
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104 | #define X86_VM_MASK 0x00020000
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105 | #define X86_AC_MASK 0x00040000
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106 | #define X86_VIF_MASK 0x00080000 /* virtual interrupt flag */
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107 | #define X86_VIP_MASK 0x00100000 /* virtual interrupt pending */
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108 | #define X86_ID_MASK 0x00200000
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109 |
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110 | #define MEM_RB(name, addr) (*name->mem->rb)(name, addr)
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111 | #define MEM_RW(name, addr) (*name->mem->rw)(name, addr)
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112 | #define MEM_RL(name, addr) (*name->mem->rl)(name, addr)
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113 | #define MEM_WB(name, addr, val) (*name->mem->wb)(name, addr, val)
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114 | #define MEM_WW(name, addr, val) (*name->mem->ww)(name, addr, val)
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115 | #define MEM_WL(name, addr, val) (*name->mem->wl)(name, addr, val)
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116 |
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117 | /* OS dependent functions */
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118 | extern _X_EXPORT Bool MapCurrentInt10(xf86Int10InfoPtr pInt);
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119 |
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120 | /* x86 executor related functions */
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121 | extern _X_EXPORT Bool xf86Int10ExecSetup(xf86Int10InfoPtr pInt);
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122 |
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123 | /* int.c */
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124 | extern _X_EXPORT xf86Int10InfoPtr Int10Current;
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125 | int int_handler(xf86Int10InfoPtr pInt);
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126 |
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127 | /* helper_exec.c */
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128 | int setup_int(xf86Int10InfoPtr pInt);
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129 | void finish_int(xf86Int10InfoPtr, int sig);
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130 | uint32_t getIntVect(xf86Int10InfoPtr pInt, int num);
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131 | void pushw(xf86Int10InfoPtr pInt, uint16_t val);
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132 | int run_bios_int(int num, xf86Int10InfoPtr pInt);
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133 | void dump_code(xf86Int10InfoPtr pInt);
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134 | void dump_registers(xf86Int10InfoPtr pInt);
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135 | void stack_trace(xf86Int10InfoPtr pInt);
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136 | uint8_t bios_checksum(const uint8_t *start, int size);
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137 | void LockLegacyVGA(xf86Int10InfoPtr pInt, legacyVGAPtr vga);
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138 | void UnlockLegacyVGA(xf86Int10InfoPtr pInt, legacyVGAPtr vga);
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139 |
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140 | #if defined (_PC)
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141 | extern _X_EXPORT void xf86Int10SaveRestoreBIOSVars(xf86Int10InfoPtr pInt,
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142 | Bool save);
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143 | #endif
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144 | int port_rep_inb(xf86Int10InfoPtr pInt,
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145 | uint16_t port, uint32_t base, int d_f, uint32_t count);
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146 | int port_rep_inw(xf86Int10InfoPtr pInt,
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147 | uint16_t port, uint32_t base, int d_f, uint32_t count);
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148 | int port_rep_inl(xf86Int10InfoPtr pInt,
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149 | uint16_t port, uint32_t base, int d_f, uint32_t count);
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150 | int port_rep_outb(xf86Int10InfoPtr pInt,
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151 | uint16_t port, uint32_t base, int d_f, uint32_t count);
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152 | int port_rep_outw(xf86Int10InfoPtr pInt,
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153 | uint16_t port, uint32_t base, int d_f, uint32_t count);
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154 | int port_rep_outl(xf86Int10InfoPtr pInt,
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155 | uint16_t port, uint32_t base, int d_f, uint32_t count);
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156 |
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157 | uint8_t x_inb(uint16_t port);
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158 | uint16_t x_inw(uint16_t port);
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159 | void x_outb(uint16_t port, uint8_t val);
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160 | void x_outw(uint16_t port, uint16_t val);
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161 | uint32_t x_inl(uint16_t port);
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162 | void x_outl(uint16_t port, uint32_t val);
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163 |
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164 | uint8_t Mem_rb(uint32_t addr);
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165 | uint16_t Mem_rw(uint32_t addr);
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166 | uint32_t Mem_rl(uint32_t addr);
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167 | void Mem_wb(uint32_t addr, uint8_t val);
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168 | void Mem_ww(uint32_t addr, uint16_t val);
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169 | void Mem_wl(uint32_t addr, uint32_t val);
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170 |
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171 | /* helper_mem.c */
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172 | void setup_int_vect(xf86Int10InfoPtr pInt);
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173 | int setup_system_bios(void *base_addr);
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174 | void reset_int_vect(xf86Int10InfoPtr pInt);
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175 | void set_return_trap(xf86Int10InfoPtr pInt);
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176 | extern _X_EXPORT void *xf86HandleInt10Options(ScrnInfoPtr pScrn,
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177 | int entityIndex);
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178 | Bool int10skip(const void *options);
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179 | Bool int10_check_bios(int scrnIndex, int codeSeg,
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180 | const unsigned char *vbiosMem);
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181 | Bool initPrimary(const void *options);
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182 | extern _X_EXPORT BusType xf86int10GetBiosLocationType(const xf86Int10InfoPtr
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183 | pInt);
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184 | extern _X_EXPORT Bool xf86int10GetBiosSegment(xf86Int10InfoPtr pInt,
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185 | void *base);
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186 | #ifdef DEBUG
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187 | void dprint(unsigned long start, unsigned long size);
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188 | #endif
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189 |
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190 | #endif /* _INT10_PRIVATE */
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191 | #endif /* _XF86INT10_H */
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