prep_pci.c

内核linux2.4.20,可跟rtlinux3.2打补丁 组成实时linux系统,编译内核

/*
 * BK Id: SCCS/s.prep_pci.c 1.33 12/20/01 15:36:12 trini
 */
/*
 * PReP pci functions.
 * Originally by Gary Thomas
 * rewritten and updated by Cort Dougan ([e-mail])
 *
 * The motherboard routes/maps will disappear shortly. -- Cort
 */

#include <linux/config.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/init.h>

#include <asm/sections.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/ptrace.h>
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#include <asm/residual.h>
#include <asm/processor.h>
#include <asm/irq.h>
#include <asm/machdep.h>

#include "pci.h"
#include "open_pic.h"

#define MAX_DEVNR 22

/* Which PCI interrupt line does a given device [slot] use? */
/* Note: This really should be two dimensional based in slot/pin used */
static unsigned char *Motherboard_map;
unsigned char *Motherboard_map_name;

/* How is the 82378 PIRQ mapping setup? */
static unsigned char *Motherboard_routes;

static void (*Motherboard_non0)(struct pci_dev *);

static void Powerplus_Map_Non0(struct pci_dev *);

/* Used for Motorola to store system config register */
static unsigned long	*ProcInfo;

/* Tables for known hardware */   

/* Motorola PowerStackII - Utah */
static char Utah_pci_IRQ_map[23] __prepdata =
{
        0,   /* Slot 0  - unused */
        0,   /* Slot 1  - unused */
        5,   /* Slot 2  - SCSI - NCR825A  */
        0,   /* Slot 3  - unused */
        1,   /* Slot 4  - Ethernet - DEC2114x */
        0,   /* Slot 5  - unused */
        3,   /* Slot 6  - PCI Card slot #1 */
        4,   /* Slot 7  - PCI Card slot #2 */
        5,   /* Slot 8  - PCI Card slot #3 */
        5,   /* Slot 9  - PCI Bridge */
             /* added here in case we ever support PCI bridges */
             /* Secondary PCI bus cards are at slot-9,6 & slot-9,7 */
        0,   /* Slot 10 - unused */
        0,   /* Slot 11 - unused */
        5,   /* Slot 12 - SCSI - NCR825A */
        0,   /* Slot 13 - unused */
        3,   /* Slot 14 - enet */
        0,   /* Slot 15 - unused */
        2,   /* Slot 16 - unused */
        3,   /* Slot 17 - unused */
        5,   /* Slot 18 - unused */
        0,   /* Slot 19 - unused */
        0,   /* Slot 20 - unused */
        0,   /* Slot 21 - unused */
        0,   /* Slot 22 - unused */
};

static char Utah_pci_IRQ_routes[] __prepdata =
{
        0,   /* Line 0 - Unused */
        9,   /* Line 1 */
	10,  /* Line 2 */
        11,  /* Line 3 */
        14,  /* Line 4 */
        15,  /* Line 5 */
};

/* Motorola PowerStackII - Omaha */
/* no integrated SCSI or ethernet */
static char Omaha_pci_IRQ_map[23] __prepdata =
{
        0,   /* Slot 0  - unused */
        0,   /* Slot 1  - unused */
        3,   /* Slot 2  - Winbond EIDE */
        0,   /* Slot 3  - unused */
        0,   /* Slot 4  - unused */
        0,   /* Slot 5  - unused */
        1,   /* Slot 6  - PCI slot 1 */
        2,   /* Slot 7  - PCI slot 2  */
        3,   /* Slot 8  - PCI slot 3 */
        4,   /* Slot 9  - PCI slot 4 */ /* needs indirect access */
        0,   /* Slot 10 - unused */
        0,   /* Slot 11 - unused */
        0,   /* Slot 12 - unused */
        0,   /* Slot 13 - unused */
        0,   /* Slot 14 - unused */
        0,   /* Slot 15 - unused */
        1,   /* Slot 16  - PCI slot 1 */
        2,   /* Slot 17  - PCI slot 2  */
        3,   /* Slot 18  - PCI slot 3 */
        4,   /* Slot 19  - PCI slot 4 */ /* needs indirect access */
        0,
        0,
        0,
};

static char Omaha_pci_IRQ_routes[] __prepdata =
{
        0,   /* Line 0 - Unused */
        9,   /* Line 1 */
        11,  /* Line 2 */
        14,  /* Line 3 */
        15   /* Line 4 */
};

/* Motorola PowerStack */
static char Blackhawk_pci_IRQ_map[19] __prepdata =
{
  	0,	/* Slot 0  - unused */
  	0,	/* Slot 1  - unused */
  	0,	/* Slot 2  - unused */
  	0,	/* Slot 3  - unused */
  	0,	/* Slot 4  - unused */
  	0,	/* Slot 5  - unused */
  	0,	/* Slot 6  - unused */
  	0,	/* Slot 7  - unused */
  	0,	/* Slot 8  - unused */
  	0,	/* Slot 9  - unused */
  	0,	/* Slot 10 - unused */
  	0,	/* Slot 11 - unused */
  	3,	/* Slot 12 - SCSI */
  	0,	/* Slot 13 - unused */
  	1,	/* Slot 14 - Ethernet */
  	0,	/* Slot 15 - unused */
 	1,	/* Slot P7 */
 	2,	/* Slot P6 */
 	3,	/* Slot P5 */
};

static char Blackhawk_pci_IRQ_routes[] __prepdata =
{
   	0,	/* Line 0 - Unused */
   	9,	/* Line 1 */
   	11,	/* Line 2 */
   	15,	/* Line 3 */
   	15	/* Line 4 */
};
   
/* Motorola Mesquite */
static char Mesquite_pci_IRQ_map[23] __prepdata =
{
	0,	/* Slot 0  - unused */
	0,	/* Slot 1  - unused */
	0,	/* Slot 2  - unused */
	0,	/* Slot 3  - unused */
	0,	/* Slot 4  - unused */
	0,	/* Slot 5  - unused */
	0,	/* Slot 6  - unused */
	0,	/* Slot 7  - unused */
	0,	/* Slot 8  - unused */
	0,	/* Slot 9  - unused */
	0,	/* Slot 10 - unused */
	0,	/* Slot 11 - unused */
	0,	/* Slot 12 - unused */
	0,	/* Slot 13 - unused */
	2,	/* Slot 14 - Ethernet */
	0,	/* Slot 15 - unused */
	3,	/* Slot 16 - PMC */
	0,	/* Slot 17 - unused */
	0,	/* Slot 18 - unused */
	0,	/* Slot 19 - unused */
	0,	/* Slot 20 - unused */
	0,	/* Slot 21 - unused */
	0,	/* Slot 22 - unused */
};

/* Motorola Sitka */
static char Sitka_pci_IRQ_map[21] __prepdata =
{
	0,      /* Slot 0  - unused */
	0,      /* Slot 1  - unused */
	0,      /* Slot 2  - unused */
	0,      /* Slot 3  - unused */
	0,      /* Slot 4  - unused */
	0,      /* Slot 5  - unused */
	0,      /* Slot 6  - unused */
	0,      /* Slot 7  - unused */
	0,      /* Slot 8  - unused */
	0,      /* Slot 9  - unused */
	0,      /* Slot 10 - unused */
	0,      /* Slot 11 - unused */
	0,      /* Slot 12 - unused */
	0,      /* Slot 13 - unused */
	2,      /* Slot 14 - Ethernet */
	0,      /* Slot 15 - unused */
	9,      /* Slot 16 - PMC 1  */
	12,     /* Slot 17 - PMC 2  */
	0,      /* Slot 18 - unused */
	0,      /* Slot 19 - unused */
	4,      /* Slot 20 - NT P2P bridge */
};

/* Motorola MTX */
static char MTX_pci_IRQ_map[23] __prepdata =
{
	0,	/* Slot 0  - unused */
	0,	/* Slot 1  - unused */
	0,	/* Slot 2  - unused */
	0,	/* Slot 3  - unused */
	0,	/* Slot 4  - unused */
	0,	/* Slot 5  - unused */
	0,	/* Slot 6  - unused */
	0,	/* Slot 7  - unused */
	0,	/* Slot 8  - unused */
	0,	/* Slot 9  - unused */
	0,	/* Slot 10 - unused */
	0,	/* Slot 11 - unused */
	3,	/* Slot 12 - SCSI */
	0,	/* Slot 13 - unused */
	2,	/* Slot 14 - Ethernet */
	0,	/* Slot 15 - unused */
	9,      /* Slot 16 - PCI/PMC slot 1 */
	10,     /* Slot 17 - PCI/PMC slot 2 */
	11,     /* Slot 18 - PCI slot 3 */
	0,	/* Slot 19 - unused */
	0,	/* Slot 20 - unused */
	0,	/* Slot 21 - unused */
	0,	/* Slot 22 - unused */
};

/* Motorola MTX Plus */
/* Secondary bus interrupt routing is not supported yet */
static char MTXplus_pci_IRQ_map[23] __prepdata =
{
        0,      /* Slot 0  - unused */
        0,      /* Slot 1  - unused */
        0,      /* Slot 2  - unused */
        0,      /* Slot 3  - unused */
        0,      /* Slot 4  - unused */
        0,      /* Slot 5  - unused */
        0,      /* Slot 6  - unused */
        0,      /* Slot 7  - unused */
        0,      /* Slot 8  - unused */
        0,      /* Slot 9  - unused */
        0,      /* Slot 10 - unused */
        0,      /* Slot 11 - unused */
        3,      /* Slot 12 - SCSI */
        0,      /* Slot 13 - unused */
        2,      /* Slot 14 - Ethernet 1 */
        0,      /* Slot 15 - unused */
        9,      /* Slot 16 - PCI slot 1P */
        10,     /* Slot 17 - PCI slot 2P */
        11,     /* Slot 18 - PCI slot 3P */
        10,     /* Slot 19 - Ethernet 2 */
        0,      /* Slot 20 - P2P Bridge */
        0,      /* Slot 21 - unused */
        0,      /* Slot 22 - unused */
};

static char Raven_pci_IRQ_routes[] __prepdata =
{
   	0,	/* This is a dummy structure */
};
   
/* Motorola MVME16xx */
static char Genesis_pci_IRQ_map[16] __prepdata =
{
  	0,	/* Slot 0  - unused */
  	0,	/* Slot 1  - unused */
  	0,	/* Slot 2  - unused */
  	0,	/* Slot 3  - unused */
  	0,	/* Slot 4  - unused */
  	0,	/* Slot 5  - unused */
  	0,	/* Slot 6  - unused */
  	0,	/* Slot 7  - unused */
  	0,	/* Slot 8  - unused */
  	0,	/* Slot 9  - unused */
  	0,	/* Slot 10 - unused */
  	0,	/* Slot 11 - unused */
  	3,	/* Slot 12 - SCSI */
  	0,	/* Slot 13 - unused */
  	1,	/* Slot 14 - Ethernet */
  	0,	/* Slot 15 - unused */
};

static char Genesis_pci_IRQ_routes[] __prepdata =
{
   	0,	/* Line 0 - Unused */
   	10,	/* Line 1 */
   	11,	/* Line 2 */
   	14,	/* Line 3 */
   	15	/* Line 4 */
};
   
static char Genesis2_pci_IRQ_map[23] __prepdata =
{
	0,	/* Slot 0  - unused */
	0,	/* Slot 1  - unused */
	0,	/* Slot 2  - unused */
	0,	/* Slot 3  - unused */
	0,	/* Slot 4  - unused */
	0,	/* Slot 5  - unused */
	0,	/* Slot 6  - unused */
	0,	/* Slot 7  - unused */
	0,	/* Slot 8  - unused */
	0,	/* Slot 9  - unused */
	0,	/* Slot 10 - Ethernet */
	0,	/* Slot 11 - Universe PCI - VME Bridge */
	3,	/* Slot 12 - unused */
	0,	/* Slot 13 - unused */
	2,	/* Slot 14 - SCSI */
	0,	/* Slot 15 - unused */
	9,	/* Slot 16 - PMC 1 */
	12,	/* Slot 17 - pci */
	11,	/* Slot 18 - pci */
	10,	/* Slot 19 - pci */
	0,	/* Slot 20 - pci */
	0,	/* Slot 21 - unused */
	0,	/* Slot 22 - unused */
};

/* Motorola Series-E */
static char Comet_pci_IRQ_map[23] __prepdata =
{
  	0,	/* Slot 0  - unused */
  	0,	/* Slot 1  - unused */
  	0,	/* Slot 2  - unused */
  	0,	/* Slot 3  - unused */
  	0,	/* Slot 4  - unused */
  	0,	/* Slot 5  - unused */
  	0,	/* Slot 6  - unused */
  	0,	/* Slot 7  - unused */
  	0,	/* Slot 8  - unused */
  	0,	/* Slot 9  - unused */
  	0,	/* Slot 10 - unused */
  	0,	/* Slot 11 - unused */
  	3,	/* Slot 12 - SCSI */
  	0,	/* Slot 13 - unused */
  	1,	/* Slot 14 - Ethernet */
  	0,	/* Slot 15 - unused */
	1,	/* Slot 16 - PCI slot 1 */
	2,	/* Slot 17 - PCI slot 2 */
	3,	/* Slot 18 - PCI slot 3 */
	4,	/* Slot 19 - PCI bridge */
	0,
	0,
	0,
};

static char Comet_pci_IRQ_routes[] __prepdata =
{
   	0,	/* Line 0 - Unused */
   	10,	/* Line 1 */
   	11,	/* Line 2 */
   	14,	/* Line 3 */
   	15	/* Line 4 */
};

/* Motorola Series-EX */
static char Comet2_pci_IRQ_map[23] __prepdata =
{
	0,	/* Slot 0  - unused */
	0,	/* Slot 1  - unused */
	3,	/* Slot 2  - SCSI - NCR825A */
	0,	/* Slot 3  - unused */
	1,	/* Slot 4  - Ethernet - DEC2104X */
	0,	/* Slot 5  - unused */
	1,	/* Slot 6  - PCI slot 1 */
	2,	/* Slot 7  - PCI slot 2 */
	3,	/* Slot 8  - PCI slot 3 */
	4,	/* Slot 9  - PCI bridge  */
	0,	/* Slot 10 - unused */
	0,	/* Slot 11 - unused */
	3,	/* Slot 12 - SCSI - NCR825A */
	0,	/* Slot 13 - unused */
	1,	/* Slot 14 - Ethernet - DEC2104X */
	0,	/* Slot 15 - unused */
	1,	/* Slot 16 - PCI slot 1 */
	2,	/* Slot 17 - PCI slot 2 */
	3,	/* Slot 18 - PCI slot 3 */
	4,	/* Slot 19 - PCI bridge */
	0,
	0,
	0,
};

static char Comet2_pci_IRQ_routes[] __prepdata =
{
	0,	/* Line 0 - Unused */
	10,	/* Line 1 */
	11,	/* Line 2 */
	14,	/* Line 3 */
	15,	/* Line 4 */
};

/*
 * ibm 830 (and 850?).
 * This is actually based on the Carolina motherboard
 * -- Cort
 */
static char ibm8xx_pci_IRQ_map[23] __prepdata = {
        0, /* Slot 0  - unused */
        0, /* Slot 1  - unused */
        0, /* Slot 2  - unused */
        0, /* Slot 3  - unused */
        0, /* Slot 4  - unused */
        0, /* Slot 5  - unused */
        0, /* Slot 6  - unused */
        0, /* Slot 7  - unused */
        0, /* Slot 8  - unused */
        0, /* Slot 9  - unused */