spci.h

scsi脚本文件(scripts)编程例子

/*--------------------------------------------------*/
/*                                                  */
/* Module SPCI.H                                    */
/*                                                  */
/* Declarations for PCI constants and structures.   */
/* PCI function declarations.                       */
/*                                                  */
/* Adapted from Symbios Logic                       */
/*    Software Development Kit                      */
/*                                                  */
/* Project: A Programmer's Guide to SCSI            */
/* Copyright (C) 1997, Brian Sawert.                */
/* All rights reserved.                             */
/*                                                  */
/*--------------------------------------------------*/


#ifndef _SPCI_H
#define _SPCI_H


/*---------- constant definitions ----------*/

// PCI BIOS interrupt
#define PCI_BIOS_INT             0x1a

// PCI BIOS function call ID
#define PCI_FUNCTION_ID          0xb1

// PCI BIOS present subfunction
#define PCI_BIOS_PRESENT         0x01

// PCI find device subfunction
#define PCI_FIND_DEVICE          0x02

// PCI read configuration subfunction
#define PCI_READ_CONFIG_DWORD    0x0a

// PCI write configuration subfunction
#define PCI_WRITE_CONFIG_DWORD   0x0d


// PCI version numbers
#define PCI_BIOS_REV_1X          0x10
#define PCI_BIOS_REV_2X          0x20
#define PCI_UNKNOWN_BIOS         0xFF
#define PCI_NO_BIOS              0x00

// PCI configuration registers

// vendor ID register
#define PCI_CONFIG_REG_VENID     0x00

// device ID register
#define PCI_CONFIG_REG_DEVID     0x00

// command register
#define PCI_CONFIG_REG_CMD       0x04

// status register
#define PCI_CONFIG_REG_STAT      0x04

// revision ID register
#define PCI_CONFIG_REG_REVID     0x08

// subsystem vendor ID register
#define PCI_CONFIG_REG_SUBV      0x2C

// subsystem ID register
#define PCI_CONFIG_REG_SUBID     0x2C

// ROM base address register
#define PCI_CONFIG_REG_ROM       0x30

// interrupt line register
#define PCI_CONFIG_REG_INTL      0x3C


/*---------- type definitions ----------*/

typedef unsigned char   BYTE;
typedef unsigned int    WORD;
typedef unsigned long   DWORD;


// PCI BIOS information

typedef struct {
   BYTE access;            // access mechanism
   WORD version;           // major/minor version
   BYTE lastbus;           // last PCI bus number
} pci_bios;


// PCI device information

typedef struct {
   WORD bus_num;           // PCI bus number
   WORD dev_num;           // device number
   WORD function;          // function number
   WORD vend_id;           // vendor ID
   WORD dev_id;            // device ID
   WORD dev_index;         // device index
   BYTE rev_id;            // revision ID
   WORD  command;          // command register
   DWORD mem_base;         // register memory base
   DWORD io_base;          // register I/O base
   DWORD ram_base;         // SCRIPTS RAM base
   WORD  sub_id;           // subsystem ID
   WORD  sub_vend_id;      // subsystem vendor ID
   DWORD rom_base;         // ROM base address
   BYTE intl;              // interrupt number
} pci_device;


/*---------- macro definitions ----------*/

#define LOBYTE(w) ((BYTE)(w))
#define HIBYTE(w) ((BYTE)((WORD)(w) >> 8))

#define LOWORD(l) ((WORD)(l))
#define HIWORD(l) ((WORD)((DWORD)(l) >> 16))


/*---------- PCI function declarations ----------*/

// read PCI BIOS version information
extern WORD PCI_GetPCIBIOSVersion(pci_bios *ppcibios);

// find a specific PCI device
extern int PCI_FindDevice(pci_device *ppcidevice);

// read a PCI configuration register
extern DWORD PCI_GetConfigRegister(pci_device *ppcidevice,
   WORD offset);

// write to a PCI configuration register
extern WORD PCI_SetConfigRegister(pci_device *ppcidevice,
   WORD offset, DWORD value);


#endif