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+/****************************************************************************
+*
+* BIOS emulator and interface
+* to Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Header file for the real mode x86 BIOS emulator, which is
+* used to warmboot any number of VGA compatible PCI/AGP
+* controllers under any OS, on any processor family that
+* supports PCI. We also allow the user application to call
+* real mode BIOS functions and Int 10h functions (including
+* the VESA BIOS).
+*
+****************************************************************************/
+
+#ifndef __BIOSEMU_H
+#define __BIOSEMU_H
+
+#ifdef __KERNEL__
+#include "x86emu.h"
+#else
+#include "x86emu.h"
+#include "pmapi.h"
+#include "pcilib.h"
+#endif
+
+/*---------------------- Macros and type definitions ----------------------*/
+
+#pragma pack(1)
+
+#ifndef __KERNEL__
+/****************************************************************************
+REMARKS:
+Data structure used to describe the details specific to a particular VGA
+controller. This information is used to allow the VGA controller to be
+swapped on the fly within the BIOS emulator.
+
+HEADER:
+biosemu.h
+
+MEMBERS:
+pciInfo - PCI device information block for the controller
+BIOSImage - Pointer to a read/write copy of the BIOS image
+BIOSImageLen - Length of the BIOS image
+LowMem - Copy of key low memory areas
+****************************************************************************/
+typedef struct {
+ PCIDeviceInfo *pciInfo;
+ void *BIOSImage;
+ ulong BIOSImageLen;
+ uchar LowMem[1536];
+} BE_VGAInfo;
+#else
+/****************************************************************************
+REMARKS:
+Data structure used to describe the details for the BIOS emulator system
+environment as used by the X86 emulator library.
+
+HEADER:
+biosemu.h
+
+MEMBERS:
+vgaInfo - VGA BIOS information structure
+biosmem_base - Base of the BIOS image
+biosmem_limit - Limit of the BIOS image
+busmem_base - Base of the VGA bus memory
+****************************************************************************/
+typedef struct {
+ int function;
+ int device;
+ int bus;
+ u32 VendorID;
+ u32 DeviceID;
+ pci_dev_t pcidev;
+ void *BIOSImage;
+ u32 BIOSImageLen;
+ u8 LowMem[1536];
+} BE_VGAInfo;
+
+#endif /* __KERNEL__ */
+
+#define CRT_C 24 /* 24 CRT Controller Registers */
+#define ATT_C 21 /* 21 Attribute Controller Registers */
+#define GRA_C 9 /* 9 Graphics Controller Registers */
+#define SEQ_C 5 /* 5 Sequencer Registers */
+#define PAL_C 768 /* 768 Palette Registers */
+
+/****************************************************************************
+REMARKS:
+Data structure used to describe the details for the BIOS emulator system
+environment as used by the X86 emulator library.
+
+HEADER:
+biosemu.h
+
+MEMBERS:
+vgaInfo - VGA BIOS information structure
+biosmem_base - Base of the BIOS image
+biosmem_limit - Limit of the BIOS image
+busmem_base - Base of the VGA bus memory
+timer - Timer used to emulate PC timer ports
+timer0 - Latched value for timer 0
+timer0Latched - True if timer 0 value was just latched
+timer2 - Current value for timer 2
+emulateVGA - True to emulate VGA I/O and memory accesses
+****************************************************************************/
+
+typedef struct {
+ BE_VGAInfo vgaInfo;
+ ulong biosmem_base;
+ ulong biosmem_limit;
+ ulong busmem_base;
+
+ u32 timer0;
+ int timer0Latched;
+ u32 timer1;
+ int timer1Latched;
+ u32 timer2;
+ int timer2Latched;
+
+ int emulateVGA;
+ u8 emu61;
+ u8 emu70;
+ int flipFlop3C0;
+ u32 configAddress;
+ u8 emu3C0;
+ u8 emu3C1[ATT_C];
+ u8 emu3C2;
+ u8 emu3C4;
+ u8 emu3C5[SEQ_C];
+ u8 emu3C6;
+ uint emu3C7;
+ uint emu3C8;
+ u8 emu3C9[PAL_C];
+ u8 emu3CE;
+ u8 emu3CF[GRA_C];
+ u8 emu3D4;
+ u8 emu3D5[CRT_C];
+ u8 emu3DA;
+
+} BE_sysEnv;
+
+#ifdef __KERNEL__
+
+/* Define some types when compiling for the Linux kernel that normally
+ * come from the SciTech PM library.
+ */
+
+/****************************************************************************
+REMARKS:
+Structure describing the 32-bit extended x86 CPU registers
+
+HEADER:
+pmapi.h
+
+MEMBERS:
+eax - Value of the EAX register
+ebx - Value of the EBX register
+ecx - Value of the ECX register
+edx - Value of the EDX register
+esi - Value of the ESI register
+edi - Value of the EDI register
+cflag - Value of the carry flag
+****************************************************************************/
+typedef struct {
+ u32 eax;
+ u32 ebx;
+ u32 ecx;
+ u32 edx;
+ u32 esi;
+ u32 edi;
+ u32 cflag;
+} RMDWORDREGS;
+
+/****************************************************************************
+REMARKS:
+Structure describing the 16-bit x86 CPU registers
+
+HEADER:
+pmapi.h
+
+MEMBERS:
+ax - Value of the AX register
+bx - Value of the BX register
+cx - Value of the CX register
+dx - Value of the DX register
+si - Value of the SI register
+di - Value of the DI register
+cflag - Value of the carry flag
+****************************************************************************/
+#ifdef __BIG_ENDIAN__
+typedef struct {
+ u16 ax_hi, ax;
+ u16 bx_hi, bx;
+ u16 cx_hi, cx;
+ u16 dx_hi, dx;
+ u16 si_hi, si;
+ u16 di_hi, di;
+ u16 cflag_hi, cflag;
+} RMWORDREGS;
+#else
+typedef struct {
+ u16 ax, ax_hi;
+ u16 bx, bx_hi;
+ u16 cx, cx_hi;
+ u16 dx, dx_hi;
+ u16 si, si_hi;
+ u16 di, di_hi;
+ u16 cflag, cflag_hi;
+} RMWORDREGS;
+#endif
+
+/****************************************************************************
+REMARKS:
+Structure describing the 8-bit x86 CPU registers
+
+HEADER:
+pmapi.h
+
+MEMBERS:
+al - Value of the AL register
+ah - Value of the AH register
+bl - Value of the BL register
+bh - Value of the BH register
+cl - Value of the CL register
+ch - Value of the CH register
+dl - Value of the DL register
+dh - Value of the DH register
+****************************************************************************/
+#ifdef __BIG_ENDIAN__
+typedef struct {
+ u16 ax_hi;
+ u8 ah, al;
+ u16 bx_hi;
+ u8 bh, bl;
+ u16 cx_hi;
+ u8 ch, cl;
+ u16 dx_hi;
+ u8 dh, dl;
+} RMBYTEREGS;
+#else
+typedef struct {
+ u8 al;
+ u8 ah;
+ u16 ax_hi;
+ u8 bl;
+ u8 bh;
+ u16 bx_hi;
+ u8 cl;
+ u8 ch;
+ u16 cx_hi;
+ u8 dl;
+ u8 dh;
+ u16 dx_hi;
+} RMBYTEREGS;
+#endif
+
+/****************************************************************************
+REMARKS:
+Structure describing all the x86 CPU registers
+
+HEADER:
+pmapi.h
+
+MEMBERS:
+e - Member to access registers as 32-bit values
+x - Member to access registers as 16-bit values
+h - Member to access registers as 8-bit values
+****************************************************************************/
+typedef union {
+ RMDWORDREGS e;
+ RMWORDREGS x;
+ RMBYTEREGS h;
+} RMREGS;
+
+/****************************************************************************
+REMARKS:
+Structure describing all the x86 segment registers
+
+HEADER:
+pmapi.h
+
+MEMBERS:
+es - ES segment register
+cs - CS segment register
+ss - SS segment register
+ds - DS segment register
+fs - FS segment register
+gs - GS segment register
+****************************************************************************/
+typedef struct {
+ u16 es;
+ u16 cs;
+ u16 ss;
+ u16 ds;
+ u16 fs;
+ u16 gs;
+} RMSREGS;
+
+#endif /* __KERNEL__ */
+
+#ifndef __KERNEL__
+
+/****************************************************************************
+REMARKS:
+Structure defining all the BIOS Emulator API functions as exported from
+the Binary Portable DLL.
+{secret}
+****************************************************************************/
+typedef struct {
+ ulong dwSize;
+ ibool(PMAPIP BE_init) (u32 debugFlags, int memSize, BE_VGAInfo * info);
+ void (PMAPIP BE_setVGA) (BE_VGAInfo * info);
+ void (PMAPIP BE_getVGA) (BE_VGAInfo * info);
+ void *(PMAPIP BE_mapRealPointer) (uint r_seg, uint r_off);
+ void *(PMAPIP BE_getVESABuf) (uint * len, uint * rseg, uint * roff);
+ void (PMAPIP BE_callRealMode) (uint seg, uint off, RMREGS * regs,
+ RMSREGS * sregs);
+ int (PMAPIP BE_int86) (int intno, RMREGS * in, RMREGS * out);
+ int (PMAPIP BE_int86x) (int intno, RMREGS * in, RMREGS * out,
+ RMSREGS * sregs);
+ void *reserved1;
+ void (PMAPIP BE_exit) (void);
+} BE_exports;
+
+/****************************************************************************
+REMARKS:
+Function pointer type for the Binary Portable DLL initialisation entry point.
+{secret}
+****************************************************************************/
+typedef BE_exports *(PMAPIP BE_initLibrary_t) (PM_imports * PMImp);
+#endif
+
+#pragma pack()
+
+/*---------------------------- Global variables ---------------------------*/
+
+#ifdef __cplusplus
+extern "C" { /* Use "C" linkage when in C++ mode */
+#endif
+
+/* {secret} Global BIOS emulator system environment */
+ extern BE_sysEnv _BE_env;
+
+/*-------------------------- Function Prototypes --------------------------*/
+
+/* BIOS emulator library entry points */
+ int X86API BE_init(u32 debugFlags, int memSize, BE_VGAInfo * info,
+ int shared);
+ void X86API BE_setVGA(BE_VGAInfo * info);
+ void X86API BE_getVGA(BE_VGAInfo * info);
+ void X86API BE_setDebugFlags(u32 debugFlags);
+ void *X86API BE_mapRealPointer(uint r_seg, uint r_off);
+ void *X86API BE_getVESABuf(uint * len, uint * rseg, uint * roff);
+ void X86API BE_callRealMode(uint seg, uint off, RMREGS * regs,
+ RMSREGS * sregs);
+ int X86API BE_int86(int intno, RMREGS * in, RMREGS * out);
+ int X86API BE_int86x(int intno, RMREGS * in, RMREGS * out,
+ RMSREGS * sregs);
+ void X86API BE_exit(void);
+
+#ifdef __cplusplus
+} /* End of "C" linkage for C++ */
+#endif
+#endif /* __BIOSEMU_H */
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