| 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 | int scrnIndex;
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| 25 | pointer cpuRegs;
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| 26 | CARD16 BIOSseg;
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| 27 | CARD16 inb40time;
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| 28 | char * BIOSScratch;
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| 29 | int Flags;
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| 30 | pointer 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 | PCITAG Tag;
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| 44 | IOADDRESS ioBase;
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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 | CARD8(*rb)(xf86Int10InfoPtr, int);
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| 49 | CARD16(*rw)(xf86Int10InfoPtr, int);
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| 50 | CARD32(*rl)(xf86Int10InfoPtr, int);
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| 51 | void(*wb)(xf86Int10InfoPtr, int, CARD8);
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| 52 | void(*ww)(xf86Int10InfoPtr, int, CARD16);
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| 53 | void(*wl)(xf86Int10InfoPtr, int, CARD32);
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| 54 | } int10MemRec, *int10MemPtr;
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| 55 |
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| 56 | typedef struct {
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| 57 | CARD8 save_msr;
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| 58 | CARD8 save_pos102;
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| 59 | CARD8 save_vse;
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| 60 | CARD8 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 | xf86Int10InfoPtr xf86InitInt10(int entityIndex);
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| 65 | xf86Int10InfoPtr xf86ExtendedInitInt10(int entityIndex, int Flags);
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| 66 | void xf86FreeInt10(xf86Int10InfoPtr pInt);
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| 67 | void *xf86Int10AllocPages(xf86Int10InfoPtr pInt, int num, int *off);
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| 68 | void xf86Int10FreePages(xf86Int10InfoPtr pInt, void *pbase, int num);
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| 69 | pointer xf86int10Addr(xf86Int10InfoPtr pInt, CARD32 addr);
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| 70 |
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| 71 | /* x86 executor related functions */
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| 72 | void xf86ExecX86int10(xf86Int10InfoPtr pInt);
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| 73 |
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| 74 | #ifdef _INT10_PRIVATE
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| 75 |
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| 76 | #define I_S_DEFAULT_INT_VECT 0xFF065
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| 77 | #define SYS_SIZE 0x100000
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| 78 | #define SYS_BIOS 0xF0000
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| 79 | #if 1
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| 80 | #define BIOS_SIZE 0x10000
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| 81 | #else /* a bug in DGUX requires this - let's try it */
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| 82 | #define BIOS_SIZE (0x10000 - 1)
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| 83 | #endif
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| 84 | #define LOW_PAGE_SIZE 0x600
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| 85 | #define V_RAM 0xA0000
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| 86 | #define VRAM_SIZE 0x20000
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| 87 | #define V_BIOS_SIZE 0x10000
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| 88 | #define V_BIOS 0xC0000
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| 89 | #define BIOS_SCRATCH_OFF 0x449
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| 90 | #define BIOS_SCRATCH_END 0x466
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| 91 | #define BIOS_SCRATCH_LEN (BIOS_SCRATCH_END - BIOS_SCRATCH_OFF + 1)
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| 92 | #define HIGH_MEM V_BIOS
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| 93 | #define HIGH_MEM_SIZE (SYS_BIOS - HIGH_MEM)
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| 94 | #define SEG_ADR(type, seg, reg) type((seg << 4) + (X86_##reg))
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| 95 | #define SEG_EADR(type, seg, reg) type((seg << 4) + (X86_E##reg))
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| 96 |
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| 97 | #define X86_TF_MASK 0x00000100
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| 98 | #define X86_IF_MASK 0x00000200
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| 99 | #define X86_IOPL_MASK 0x00003000
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| 100 | #define X86_NT_MASK 0x00004000
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| 101 | #define X86_VM_MASK 0x00020000
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| 102 | #define X86_AC_MASK 0x00040000
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| 103 | #define X86_VIF_MASK 0x00080000 /* virtual interrupt flag */
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| 104 | #define X86_VIP_MASK 0x00100000 /* virtual interrupt pending */
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| 105 | #define X86_ID_MASK 0x00200000
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| 106 |
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| 107 | #define MEM_RB(name, addr) (*name->mem->rb)(name, addr)
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| 108 | #define MEM_RW(name, addr) (*name->mem->rw)(name, addr)
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| 109 | #define MEM_RL(name, addr) (*name->mem->rl)(name, addr)
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| 110 | #define MEM_WB(name, addr, val) (*name->mem->wb)(name, addr, val)
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| 111 | #define MEM_WW(name, addr, val) (*name->mem->ww)(name, addr, val)
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| 112 | #define MEM_WL(name, addr, val) (*name->mem->wl)(name, addr, val)
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| 113 |
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| 114 | /* OS dependent functions */
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| 115 | Bool MapCurrentInt10(xf86Int10InfoPtr pInt);
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| 116 | /* x86 executor related functions */
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| 117 | Bool xf86Int10ExecSetup(xf86Int10InfoPtr pInt);
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| 118 |
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| 119 | /* int.c */
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| 120 | extern xf86Int10InfoPtr Int10Current;
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| 121 | int int_handler(xf86Int10InfoPtr pInt);
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| 122 |
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| 123 | /* helper_exec.c */
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| 124 | int setup_int(xf86Int10InfoPtr pInt);
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| 125 | void finish_int(xf86Int10InfoPtr, int sig);
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| 126 | CARD32 getIntVect(xf86Int10InfoPtr pInt, int num);
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| 127 | void pushw(xf86Int10InfoPtr pInt, CARD16 val);
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| 128 | int run_bios_int(int num, xf86Int10InfoPtr pInt);
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| 129 | void dump_code(xf86Int10InfoPtr pInt);
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| 130 | void dump_registers(xf86Int10InfoPtr pInt);
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| 131 | void stack_trace(xf86Int10InfoPtr pInt);
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| 132 | xf86Int10InfoPtr getInt10Rec(int entityIndex);
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| 133 | CARD8 bios_checksum(const CARD8 *start, int size);
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| 134 | void LockLegacyVGA(xf86Int10InfoPtr pInt, legacyVGAPtr vga);
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| 135 | void UnlockLegacyVGA(xf86Int10InfoPtr pInt, legacyVGAPtr vga);
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| 136 | #if defined (_PC)
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| 137 | void xf86Int10SaveRestoreBIOSVars(xf86Int10InfoPtr pInt, Bool save);
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| 138 | #endif
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| 139 | int port_rep_inb(xf86Int10InfoPtr pInt,
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| 140 | CARD16 port, CARD32 base, int d_f, CARD32 count);
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| 141 | int port_rep_inw(xf86Int10InfoPtr pInt,
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| 142 | CARD16 port, CARD32 base, int d_f, CARD32 count);
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| 143 | int port_rep_inl(xf86Int10InfoPtr pInt,
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| 144 | CARD16 port, CARD32 base, int d_f, CARD32 count);
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| 145 | int port_rep_outb(xf86Int10InfoPtr pInt,
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| 146 | CARD16 port, CARD32 base, int d_f, CARD32 count);
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| 147 | int port_rep_outw(xf86Int10InfoPtr pInt,
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| 148 | CARD16 port, CARD32 base, int d_f, CARD32 count);
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| 149 | int port_rep_outl(xf86Int10InfoPtr pInt,
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| 150 | CARD16 port, CARD32 base, int d_f, CARD32 count);
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| 151 |
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| 152 | CARD8 x_inb(CARD16 port);
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| 153 | CARD16 x_inw(CARD16 port);
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| 154 | void x_outb(CARD16 port, CARD8 val);
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| 155 | void x_outw(CARD16 port, CARD16 val);
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| 156 | CARD32 x_inl(CARD16 port);
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| 157 | void x_outl(CARD16 port, CARD32 val);
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| 158 |
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| 159 | CARD8 Mem_rb(CARD32 addr);
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| 160 | CARD16 Mem_rw(CARD32 addr);
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| 161 | CARD32 Mem_rl(CARD32 addr);
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| 162 | void Mem_wb(CARD32 addr, CARD8 val);
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| 163 | void Mem_ww(CARD32 addr, CARD16 val);
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| 164 | void Mem_wl(CARD32 addr, CARD32 val);
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| 165 |
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| 166 | /* helper_mem.c */
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| 167 | void setup_int_vect(xf86Int10InfoPtr pInt);
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| 168 | int setup_system_bios(void *base_addr);
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| 169 | void reset_int_vect(xf86Int10InfoPtr pInt);
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| 170 | void set_return_trap(xf86Int10InfoPtr pInt);
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| 171 | void * xf86HandleInt10Options(ScrnInfoPtr pScrn, int entityIndex);
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| 172 | Bool int10skip(const void* options);
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| 173 | Bool int10_check_bios(int scrnIndex, int codeSeg,
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| 174 | const unsigned char* vbiosMem);
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| 175 | Bool initPrimary(const void* options);
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| 176 | BusType xf86int10GetBiosLocationType(const xf86Int10InfoPtr pInt);
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| 177 | Bool xf86int10GetBiosSegment(xf86Int10InfoPtr pInt, void *base);
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| 178 | #ifdef DEBUG
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| 179 | void dprint(unsigned long start, unsigned long size);
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| 180 | #endif
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| 181 |
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| 182 | /* pci.c */
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| 183 | int mapPciRom(int pciEntity, unsigned char *address);
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| 184 |
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| 185 | #endif /* _INT10_PRIVATE */
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| 186 | #endif /* _XF86INT10_H */
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