192 lines
6.5 KiB
C
192 lines
6.5 KiB
C
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/*
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* XFree86 int10 module
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* execute BIOS int 10h calls in x86 real mode environment
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* Copyright 1999 Egbert Eich
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*/
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#ifndef _XF86INT10_H
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#define _XF86INT10_H
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#include <X11/Xmd.h>
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#include <X11/Xdefs.h>
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#include "xf86Pci.h"
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#define SEG_ADDR(x) (((x) >> 4) & 0x00F000)
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#define SEG_OFF(x) ((x) & 0x0FFFF)
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#define SET_BIOS_SCRATCH 0x1
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#define RESTORE_BIOS_SCRATCH 0x2
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/* int10 info structure */
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typedef struct {
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int entityIndex;
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uint16_t BIOSseg;
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uint16_t inb40time;
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ScrnInfoPtr pScrn;
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void *cpuRegs;
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char *BIOSScratch;
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int Flags;
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void *private;
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struct _int10Mem *mem;
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int num;
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int ax;
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int bx;
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int cx;
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int dx;
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int si;
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int di;
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int es;
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int bp;
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int flags;
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int stackseg;
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struct pci_device *dev;
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struct pci_io_handle *io;
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} xf86Int10InfoRec, *xf86Int10InfoPtr;
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typedef struct _int10Mem {
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uint8_t (*rb) (xf86Int10InfoPtr, int);
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uint16_t (*rw) (xf86Int10InfoPtr, int);
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uint32_t (*rl) (xf86Int10InfoPtr, int);
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void (*wb) (xf86Int10InfoPtr, int, uint8_t);
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void (*ww) (xf86Int10InfoPtr, int, uint16_t);
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void (*wl) (xf86Int10InfoPtr, int, uint32_t);
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} int10MemRec, *int10MemPtr;
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typedef struct {
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uint8_t save_msr;
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uint8_t save_pos102;
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uint8_t save_vse;
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uint8_t save_46e8;
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} legacyVGARec, *legacyVGAPtr;
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/* OS dependent functions */
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extern _X_EXPORT xf86Int10InfoPtr xf86InitInt10(int entityIndex);
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extern _X_EXPORT xf86Int10InfoPtr xf86ExtendedInitInt10(int entityIndex,
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int Flags);
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extern _X_EXPORT void xf86FreeInt10(xf86Int10InfoPtr pInt);
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extern _X_EXPORT void *xf86Int10AllocPages(xf86Int10InfoPtr pInt, int num,
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int *off);
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extern _X_EXPORT void xf86Int10FreePages(xf86Int10InfoPtr pInt, void *pbase,
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int num);
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extern _X_EXPORT void *xf86int10Addr(xf86Int10InfoPtr pInt, uint32_t addr);
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/* x86 executor related functions */
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extern _X_EXPORT void xf86ExecX86int10(xf86Int10InfoPtr pInt);
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#ifdef _INT10_PRIVATE
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#define I_S_DEFAULT_INT_VECT 0xFF065
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#define SYS_SIZE 0x100000
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#define SYS_BIOS 0xF0000
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#if 1
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#define BIOS_SIZE 0x10000
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#else /* a bug in DGUX requires this - let's try it */
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#define BIOS_SIZE (0x10000 - 1)
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#endif
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#define LOW_PAGE_SIZE 0x600
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#define V_RAM 0xA0000
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#define VRAM_SIZE 0x20000
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#define V_BIOS_SIZE 0x10000
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#define V_BIOS 0xC0000
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#define BIOS_SCRATCH_OFF 0x449
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#define BIOS_SCRATCH_END 0x466
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#define BIOS_SCRATCH_LEN (BIOS_SCRATCH_END - BIOS_SCRATCH_OFF + 1)
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#define HIGH_MEM V_BIOS
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#define HIGH_MEM_SIZE (SYS_BIOS - HIGH_MEM)
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#define SEG_ADR(type, seg, reg) type((seg << 4) + (X86_##reg))
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#define SEG_EADR(type, seg, reg) type((seg << 4) + (X86_E##reg))
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#define X86_TF_MASK 0x00000100
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#define X86_IF_MASK 0x00000200
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#define X86_IOPL_MASK 0x00003000
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#define X86_NT_MASK 0x00004000
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#define X86_VM_MASK 0x00020000
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#define X86_AC_MASK 0x00040000
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#define X86_VIF_MASK 0x00080000 /* virtual interrupt flag */
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#define X86_VIP_MASK 0x00100000 /* virtual interrupt pending */
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#define X86_ID_MASK 0x00200000
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#define MEM_RB(name, addr) (*name->mem->rb)(name, addr)
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#define MEM_RW(name, addr) (*name->mem->rw)(name, addr)
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#define MEM_RL(name, addr) (*name->mem->rl)(name, addr)
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#define MEM_WB(name, addr, val) (*name->mem->wb)(name, addr, val)
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#define MEM_WW(name, addr, val) (*name->mem->ww)(name, addr, val)
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#define MEM_WL(name, addr, val) (*name->mem->wl)(name, addr, val)
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/* OS dependent functions */
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extern _X_EXPORT Bool MapCurrentInt10(xf86Int10InfoPtr pInt);
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/* x86 executor related functions */
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extern _X_EXPORT Bool xf86Int10ExecSetup(xf86Int10InfoPtr pInt);
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/* int.c */
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extern _X_EXPORT xf86Int10InfoPtr Int10Current;
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int int_handler(xf86Int10InfoPtr pInt);
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/* helper_exec.c */
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int setup_int(xf86Int10InfoPtr pInt);
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void finish_int(xf86Int10InfoPtr, int sig);
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uint32_t getIntVect(xf86Int10InfoPtr pInt, int num);
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void pushw(xf86Int10InfoPtr pInt, uint16_t val);
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int run_bios_int(int num, xf86Int10InfoPtr pInt);
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void dump_code(xf86Int10InfoPtr pInt);
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void dump_registers(xf86Int10InfoPtr pInt);
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void stack_trace(xf86Int10InfoPtr pInt);
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uint8_t bios_checksum(const uint8_t *start, int size);
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void LockLegacyVGA(xf86Int10InfoPtr pInt, legacyVGAPtr vga);
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void UnlockLegacyVGA(xf86Int10InfoPtr pInt, legacyVGAPtr vga);
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#if defined (_PC)
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extern _X_EXPORT void xf86Int10SaveRestoreBIOSVars(xf86Int10InfoPtr pInt,
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Bool save);
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#endif
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int port_rep_inb(xf86Int10InfoPtr pInt,
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uint16_t port, uint32_t base, int d_f, uint32_t count);
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int port_rep_inw(xf86Int10InfoPtr pInt,
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uint16_t port, uint32_t base, int d_f, uint32_t count);
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int port_rep_inl(xf86Int10InfoPtr pInt,
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uint16_t port, uint32_t base, int d_f, uint32_t count);
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int port_rep_outb(xf86Int10InfoPtr pInt,
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uint16_t port, uint32_t base, int d_f, uint32_t count);
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int port_rep_outw(xf86Int10InfoPtr pInt,
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uint16_t port, uint32_t base, int d_f, uint32_t count);
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int port_rep_outl(xf86Int10InfoPtr pInt,
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uint16_t port, uint32_t base, int d_f, uint32_t count);
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uint8_t x_inb(uint16_t port);
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uint16_t x_inw(uint16_t port);
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void x_outb(uint16_t port, uint8_t val);
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void x_outw(uint16_t port, uint16_t val);
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uint32_t x_inl(uint16_t port);
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void x_outl(uint16_t port, uint32_t val);
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uint8_t Mem_rb(uint32_t addr);
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uint16_t Mem_rw(uint32_t addr);
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uint32_t Mem_rl(uint32_t addr);
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void Mem_wb(uint32_t addr, uint8_t val);
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void Mem_ww(uint32_t addr, uint16_t val);
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void Mem_wl(uint32_t addr, uint32_t val);
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/* helper_mem.c */
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void setup_int_vect(xf86Int10InfoPtr pInt);
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int setup_system_bios(void *base_addr);
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void reset_int_vect(xf86Int10InfoPtr pInt);
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void set_return_trap(xf86Int10InfoPtr pInt);
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extern _X_EXPORT void *xf86HandleInt10Options(ScrnInfoPtr pScrn,
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int entityIndex);
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Bool int10skip(const void *options);
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Bool int10_check_bios(int scrnIndex, int codeSeg,
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const unsigned char *vbiosMem);
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Bool initPrimary(const void *options);
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extern _X_EXPORT BusType xf86int10GetBiosLocationType(const xf86Int10InfoPtr
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pInt);
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extern _X_EXPORT Bool xf86int10GetBiosSegment(xf86Int10InfoPtr pInt,
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void *base);
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#ifdef DEBUG
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void dprint(unsigned long start, unsigned long size);
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#endif
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#endif /* _INT10_PRIVATE */
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#endif /* _XF86INT10_H */
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