pci_bios.h

基于ecos的redboot

//=============================================================================
//
//      pci_bios.h - Cyclone Diagnostics
//
//=============================================================================
//####COPYRIGHTBEGIN####
//                                                                          
// -------------------------------------------                              
// The contents of this file are subject to the Red Hat eCos Public License 
// Version 1.1 (the "License"); you may not use this file except in         
// compliance with the License.  You may obtain a copy of the License at    
// http://www.redhat.com/                                                   
//                                                                          
// Software distributed under the License is distributed on an "AS IS"      
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
// License for the specific language governing rights and limitations under 
// the License.                                                             
//                                                                          
// The Original Code is eCos - Embedded Configurable Operating System,      
// released September 30, 1998.                                             
//                                                                          
// The Initial Developer of the Original Code is Red Hat.                   
// Portions created by Red Hat are                                          
// Copyright (C) 2001 Red Hat, Inc.                             
// All Rights Reserved.                                                     
// -------------------------------------------                              
//                                                                          
//####COPYRIGHTEND####
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   Scott Coulter, Jeff Frazier, Eric Breeden
// Contributors:
// Date:        2001-01-25
// Purpose:     
// Description: 
//
//####DESCRIPTIONEND####
//
//===========================================================================*/

/****************************************************************************/
/* File:        pci_bios.h                                                            */
/*                                                                          */
/* Use:         mon960                                                      */
/*                                                                          */
/* Purpose:  PCI BIOS Routines                                              */
/*                                                                          */
/* Remarks:  Conforming to the Revision 2.1 PCI BIOS Specfication           */
/*                                                                          */
/* Functions Supported:                                                     */
/*                                                                          */
/*       pci_bios_present()                                                 */
/*       find_pci_device()                                                  */
/*       find_pci_class_code()                                              */
/*       generate_special_cycle()                                           */
/*       read_config_byte()                                                 */
/*       read_config_word()                                                 */
/*       read_config_dword()                                                */
/*       write_config_byte()                                                */
/*       write_config_word()                                                */
/*       write_config_dword()                                               */
/*       get_irq_routing_options()                                          */
/*       set_pci_irq()                                                      */
/*                                                                          */
/* History:                                                                 */
/*   06Sep00  Scott Coulter		Changed NUM_PCI_BUSES from 31 to 2          */
/*   09Sep97  Jim Otto			Defined NUM_PCI_BUSES                       */
/*                                                                          */
/*                                                                          */
/*                                                                          */
/****************************************************************************/

#include "iq80310.h"

#define XINT0 0
#define XINT1 1
#define XINT2 2
#define XINT3 3

/* primary PCI bus definitions */ 
#define PRIMARY_BUS_NUM		0
#define PRIMARY_MEM_BASE	0x80000000
#define PRIMARY_DAC_BASE	0x84000000
#define PRIMARY_IO_BASE		0x90000000
#define PRIMARY_MEM_LIMIT	0x83ffffff
#define PRIMARY_DAC_LIMIT	0x87ffffff
#define PRIMARY_IO_LIMIT	0x9000ffff


/* secondary PCI bus definitions */
#define	SECONDARY_BUS_NUM	1
#define SECONDARY_MEM_BASE	0x88000000
#define SECONDARY_DAC_BASE	0x8c000000
#define SECONDARY_IO_BASE	0x90010000
#define SECONDARY_MEM_LIMIT	0x8bffffff
#define SECONDARY_DAC_LIMIT	0x8fffffff
#define SECONDARY_IO_LIMIT	0x9001ffff


#define LAST_SYSPROC 260

#define NUM_PCI_BUSES 2

#ifndef ASM_LANGUAGE

/******************************************************************************
*
*	Required PCI BIOS Data Structures
*
*/
typedef struct 
{
	int num_devices; 
	int num_functions;	
} PCI_DATA;

typedef struct
{
	int	present_status;	 /* set to 0x00 for BIOS present */
	int	hardware_mech_config;	 /* for accessing config. space */
	int	hardware_mech_special;	/* for performing special cycles */
	int	if_level_major_ver;	 /* in BCD, 0x02 for version 2.1 */
	int	if_level_minor_ver;	 /* in BCD, 0x01 for version 2.1 */
	int	last_pci_bus;	 /* numbers start at 0 */
} PCI_BIOS_INFO;

/*******************************************************************************
*
* Type 0 PCI Configuration Space Header
*
*/

typedef struct
{
  unsigned short  vendor_id;
  unsigned short  device_id;
  unsigned short  command;
  unsigned short  status;
  unsigned char   revision_id;
  unsigned char   prog_if;
  unsigned char   sub_class;
  unsigned char   base_class;
  unsigned char   cache_line_size;
  unsigned char   latency_timer;
  unsigned char   header_type;
  unsigned char   bist;
  unsigned long   pcibase_addr0;
  unsigned long   pcibase_addr1;
  unsigned long   pcibase_addr2;
  unsigned long   pcibase_addr3;
  unsigned long   pcibase_addr4;
  unsigned long   pcibase_addr5;
  unsigned long   cardbus_cis_ptr;
  unsigned short  sub_vendor_id;
  unsigned short  sub_device_id;
  unsigned long   pcibase_exp_rom;
  unsigned long   reserved2[2];
  unsigned char   int_line;
  unsigned char   int_pin;
  unsigned char   min_gnt;
  unsigned char   max_lat;
} PCI_CONFIG_SPACE_0;

/*******************************************************************************
*
* PCI Bridge Configuration Space Header
*
*/

typedef struct
{
  unsigned short  vendor_id;
  unsigned short  device_id;
  unsigned short  command;
  unsigned short  status;
  unsigned char   revision_id;
  unsigned char   prog_if;
  unsigned char   sub_class;
  unsigned char   base_class;
  unsigned char   cache_line_size;
  unsigned char   latency_timer;
  unsigned char   header_type;
  unsigned char   bist;
  unsigned long   pcibase_addr0;
  unsigned long   pcibase_addr1;
  unsigned char   primary_busno;
  unsigned char   secondary_busno;
  unsigned char   subordinate_busno;
  unsigned char   secondary_latency_timer;
  unsigned char   io_base;
  unsigned char   io_limit;
  unsigned short  secondary_status;
  unsigned short  mem_base;
  unsigned short  mem_limit;
  unsigned short  pfmem_base;
  unsigned short  pfmem_limit;
  unsigned long   pfbase_upper32;
  unsigned long   pflimit_upper32;
  unsigned short  iobase_upper16;
  unsigned short  iolimit_upper16;
  unsigned short  sub_vendor_id;
  unsigned short  sub_device_id;
  unsigned long   pcibase_exp_rom;
  unsigned char   int_line;
  unsigned char   int_pin;
  unsigned short  bridge_control;
} PCI_CONFIG_SPACE_1;

typedef union
{
  PCI_CONFIG_SPACE_0  pci0_config;
  PCI_CONFIG_SPACE_1  pci1_config;
} PCI_CONFIG_SPACE;

#define CONFIG_MECHANISM_1	1
#define CONFIG_MECHANISM_2	2

typedef struct
{
	int	bus_number;  /* 0...255 */
  int	device_number;  /* Device number on bus */
  int	function_number;  /* Function number on device */
} PCI_DEVICE_LOCATION;


typedef struct
{
	int	bus_number;  /* 0...255 */
  int	device_number;  /* Device number on bus */
  int	inta_link;  /* Which ints. are or'd together */
  int	inta_bitmap;  /* Which XINT connected to */
  int	intb_link;  /* Which ints. are or'd together */
  int	intb_bitmap;  /* Which XINT connected to */
  int	intc_link;  /* Which ints. are or'd together */
  int	intc_bitmap;  /* Which XINT connected to */
  int	intd_link;  /* Which ints. are or'd together */
  int	intd_bitmap;  /* Which XINT connected to */
  int	slot_number;  /* Physical slot (1 - NUM_PCI_SLOTS) */
} SLOT_IRQ_ROUTING;