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/*
* $Id: prep_pci.c,v 1.23 1998/10/21 10:52:24 cort Exp $
* PReP pci functions.
* Originally by Gary Thomas
* rewritten and updated by Cort Dougan (cort@cs.nmt.edu)
*
* The motherboard routes/maps will disappear shortly. -- Cort
*/
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/ptrace.h>
#include <asm/processor.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 */
unsigned char *Motherboard_map;
unsigned char *Motherboard_map_name;
/* How is the 82378 PIRQ mapping setup? */
unsigned char *Motherboard_routes;
/* Tables for known hardware */
/* Motorola PowerStackII - Utah */
static char Utah_pci_IRQ_map[23] __prepdata =
{
0, /* Slot 0 - unused */
0, /* Slot 1 - unused */
4, /* Slot 2 - SCSI - NCR825A */
0, /* Slot 3 - unused */
1, /* Slot 4 - Ethernet - DEC2114x */
0, /* Slot 5 - unused */
2, /* Slot 6 - PCI Card slot #1 */
3, /* Slot 7 - PCI Card slot #2 */
4, /* Slot 8 - PCI Card slot #3 */
4, /* 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 */
4, /* Slot 12 - SCSI - NCR825A */
0, /* Slot 13 - unused */
2, /* Slot 14 - enet */
0, /* Slot 15 - unused */
0,
0,
0,
0,
0,
0,
0,
};
static char Utah_pci_IRQ_routes[] __prepdata =
{
0, /* Line 0 - Unused */
9, /* Line 1 */
11, /* Line 2 */
14, /* Line 3 */
15, /* Line 4 */
};
/* 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[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 Blackhawk_pci_IRQ_routes[] __prepdata =
{
0, /* Line 0 - Unused */
9, /* Line 1 */
11, /* Line 2 */
14, /* Line 3 */
15 /* Line 4 */
};
/* 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 */
};
/* Motorola Series-E */
static char Comet_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 Comet_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 */
0, /* Slot 10 - unused */
0, /* Slot 11 - FireCoral */
4, /* Slot 12 - Ethernet PCIINTD# */
2, /* Slot 13 - PCI Slot #2 */
2, /* Slot 14 - S3 Video PCIINTD# */
0, /* Slot 15 - onboard SCSI (INDI) [1] */
3, /* Slot 16 - NCR58C810 RS6000 Only PCIINTC# */
0, /* Slot 17 - unused */
2, /* Slot 18 - PCI Slot 2 PCIINTx# (See below) */
0, /* Slot 19 - unused */
0, /* Slot 20 - unused */
0, /* Slot 21 - unused */
2, /* Slot 22 - PCI slot 1 PCIINTx# (See below) */
};
static char ibm8xx_pci_IRQ_routes[] __prepdata = {
0, /* Line 0 - unused */
13, /* Line 1 */
10, /* Line 2 */
15, /* Line 3 */
15, /* Line 4 */
};
/*
* a 6015 ibm board
* -- Cort
*/
static char ibm6015_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 - */
1, /* Slot 12 - SCSI */
2, /* Slot 13 - */
2, /* Slot 14 - */
1, /* Slot 15 - */
1, /* Slot 16 - */
0, /* Slot 17 - */
2, /* Slot 18 - */
0, /* Slot 19 - */
0, /* Slot 20 - */
0, /* Slot 21 - */
2, /* Slot 22 - */
};
static char ibm6015_pci_IRQ_routes[] __prepdata = {
0, /* Line 0 - unused */
13, /* Line 1 */
10, /* Line 2 */
15, /* Line 3 */
15, /* Line 4 */
};
/* IBM Nobis and 850 */
static char Nobis_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 */
0, /* Slot 14 - unused */
0, /* Slot 15 - unused */
};
static char Nobis_pci_IRQ_routes[] __prepdata = {
0, /* Line 0 - Unused */
13, /* Line 1 */
13, /* Line 2 */
13, /* Line 3 */
13 /* Line 4 */
};
/* We have to turn on LEVEL mode for changed IRQ's */
/* All PCI IRQ's need to be level mode, so this should be something
* other than hard-coded as well... IRQ's are individually mappable
* to either edge or level.
*/
#define CAROLINA_IRQ_EDGE_MASK_LO 0x00 /* IRQ's 0-7 */
#define CAROLINA_IRQ_EDGE_MASK_HI 0xA4 /* IRQ's 8-15 [10,13,15] */
__prep
int
prep_pcibios_read_config_dword (unsigned char bus,
unsigned char dev, unsigned char offset, unsigned int *val)
{
unsigned long _val;
unsigned long *ptr;
dev >>= 3;
if ((bus != 0) || (dev > MAX_DEVNR))
{
*val = 0xFFFFFFFF;
return PCIBIOS_DEVICE_NOT_FOUND;
} else
{
ptr = (unsigned long *)(0x80800000 | (1<<dev) | offset);
_val = le32_to_cpu(*ptr);
}
*val = _val;
return PCIBIOS_SUCCESSFUL;
}
__prep
int
prep_pcibios_read_config_word (unsigned char bus,
unsigned char dev, unsigned char offset, unsigned short *val)
{
unsigned short _val;
unsigned short *ptr;
dev >>= 3;
if ((bus != 0) || (dev > MAX_DEVNR))
{
*val = (unsigned short)0xFFFFFFFF;
return PCIBIOS_DEVICE_NOT_FOUND;
} else
{
ptr = (unsigned short *)(0x80800000 | (1<<dev) | offset);
_val = le16_to_cpu(*ptr);
}
*val = _val;
return PCIBIOS_SUCCESSFUL;
}
__prep
int
prep_pcibios_read_config_byte (unsigned char bus,
unsigned char dev, unsigned char offset, unsigned char *val)
{
unsigned char _val;
volatile unsigned char *ptr;
dev >>= 3;
if ((bus != 0) || (dev > MAX_DEVNR))
{
*(unsigned long *)val = (unsigned long) 0xFFFFFFFF;
return PCIBIOS_DEVICE_NOT_FOUND;
} else
{
ptr = (unsigned char *)(0x80800000 | (1<<dev) | (offset ^ 1));
_val = *ptr;
}
*val = _val;
return PCIBIOS_SUCCESSFUL;
}
__prep
int
prep_pcibios_write_config_dword (unsigned char bus,
unsigned char dev, unsigned char offset, unsigned int val)
{
unsigned long _val;
unsigned long *ptr;
dev >>= 3;
_val = le32_to_cpu(val);
if ((bus != 0) || (dev > MAX_DEVNR))
{
return PCIBIOS_DEVICE_NOT_FOUND;
} else
{
ptr = (unsigned long *)(0x80800000 | (1<<dev) | offset);
*ptr = _val;
}
return PCIBIOS_SUCCESSFUL;
}
__prep
int
prep_pcibios_write_config_word (unsigned char bus,
unsigned char dev, unsigned char offset, unsigned short val)
{
unsigned short _val;
unsigned short *ptr;
dev >>= 3;
_val = le16_to_cpu(val);
if ((bus != 0) || (dev > MAX_DEVNR))
{
return PCIBIOS_DEVICE_NOT_FOUND;
} else
{
ptr = (unsigned short *)(0x80800000 | (1<<dev) | offset);
*ptr = _val;
}
return PCIBIOS_SUCCESSFUL;
}
__prep
int
prep_pcibios_write_config_byte (unsigned char bus,
unsigned char dev, unsigned char offset, unsigned char val)
{
unsigned char _val;
unsigned char *ptr;
dev >>= 3;
_val = val;
if ((bus != 0) || (dev > MAX_DEVNR))
{
return PCIBIOS_DEVICE_NOT_FOUND;
} else
{
ptr = (unsigned char *)(0x80800000 | (1<<dev) | (offset^1));
*ptr = _val;
}
return PCIBIOS_SUCCESSFUL;
}
__initfunc(unsigned long route_pci_interrupts(void))
{
unsigned char *ibc_pirq = (unsigned char *)0x80800860;
unsigned char *ibc_pcicon = (unsigned char *)0x80800840;
int i;
if ( _prep_type == _PREP_Motorola)
{
switch (inb(0x800) & 0xF0)
{
case 0x10: /* MVME16xx */
Motherboard_map_name = "Genesis";
Motherboard_map = Genesis_pci_IRQ_map;
Motherboard_routes = Genesis_pci_IRQ_routes;
break;
case 0x20: /* Series E */
Motherboard_map_name = "Powerstack (Series E)";
Motherboard_map = Comet_pci_IRQ_map;
Motherboard_routes = Comet_pci_IRQ_routes;
break;
case 0x50: /* PowerStackII Pro3000 */
Motherboard_map_name = "Omaha (PowerStack II Pro3000)";
Motherboard_map = Omaha_pci_IRQ_map;
Motherboard_routes = Omaha_pci_IRQ_routes;
break;
case 0x60: /* PowerStackII Pro4000 */
Motherboard_map_name = "Utah (Powerstack II Pro4000)";
Motherboard_map = Utah_pci_IRQ_map;
Motherboard_routes = Utah_pci_IRQ_routes;
break;
case 0xE0: /* MTX -- close enough?? to Genesis, so reuse it */
Motherboard_map_name = "Motorola MTX";
Motherboard_map = Genesis_pci_IRQ_map;
Motherboard_routes = Genesis_pci_IRQ_routes;
break;
case 0x40: /* PowerStack */
default: /* Can't hurt, can it? */
Motherboard_map_name = "Blackhawk (Powerstack)";
Motherboard_map = Blackhawk_pci_IRQ_map;
Motherboard_routes = Blackhawk_pci_IRQ_routes;
break;
}
} else if ( _prep_type == _PREP_IBM )
{
unsigned char pl_id;
/*
* my carolina is 0xf0
* 6015 has 0xfc
* -- Cort
*/
printk("IBM ID: %08x\n", inb(0x0852));
switch(inb(0x0852))
{
case 0xff:
Motherboard_map_name = "IBM 850/860 Portable\n";
Motherboard_map = Nobis_pci_IRQ_map;
Motherboard_routes = Nobis_pci_IRQ_routes;
break;
case 0xfc:
Motherboard_map_name = "IBM 6015";
Motherboard_map = ibm6015_pci_IRQ_map;
Motherboard_routes = ibm6015_pci_IRQ_routes;
break;
default:
Motherboard_map_name = "IBM 8xx (Carolina)";
Motherboard_map = ibm8xx_pci_IRQ_map;
Motherboard_routes = ibm8xx_pci_IRQ_routes;
break;
}
/*printk("Changing IRQ mode\n");*/
pl_id=inb(0x04d0);
/*printk("Low mask is %#0x\n", pl_id);*/
outb(pl_id|CAROLINA_IRQ_EDGE_MASK_LO, 0x04d0);
pl_id=inb(0x04d1);
/*printk("Hi mask is %#0x\n", pl_id);*/
outb(pl_id|CAROLINA_IRQ_EDGE_MASK_HI, 0x04d1);
pl_id=inb(0x04d1);
/*printk("Hi mask now %#0x\n", pl_id);*/
} else
{
printk("No known machine pci routing!\n");
return -1;
}
/* Set up mapping from slots */
for (i = 1; i <= 4; i++)
{
ibc_pirq[i-1] = Motherboard_routes[i];
}
/* Enable PCI interrupts */
*ibc_pcicon |= 0x20;
return 0;
}
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