Viewing file:  via82c505.c (3.74 KB) -rw-r--r--
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#include <linux/config.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/ptrace.h>
#include <linux/interrupt.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/mach/pci.h>
#define MAX_SLOTS 7
#define CONFIG_CMD(dev, where) (0x80000000 | (dev->bus->number << 16) | (dev->devfn << 8) | (where & ~3))
static int
via82c505_read_config_byte(struct pci_dev *dev, int where, u8 *value)
{
outl(CONFIG_CMD(dev,where),0xCF8);
*value=inb(0xCFC + (where&3));
return PCIBIOS_SUCCESSFUL;
}
static int
via82c505_read_config_word(struct pci_dev *dev, int where, u16 *value)
{
outl(CONFIG_CMD(dev,where),0xCF8);
*value=inw(0xCFC + (where&2));
return PCIBIOS_SUCCESSFUL;
}
static int
via82c505_read_config_dword(struct pci_dev *dev, int where, u32 *value)
{
outl(CONFIG_CMD(dev,where),0xCF8);
*value=inl(0xCFC);
return PCIBIOS_SUCCESSFUL;
}
static int
via82c505_write_config_byte(struct pci_dev *dev, int where, u8 value)
{
outl(CONFIG_CMD(dev,where),0xCF8);
outb(value, 0xCFC + (where&3));
return PCIBIOS_SUCCESSFUL;
}
static int
via82c505_write_config_word(struct pci_dev *dev, int where, u16 value)
{
outl(CONFIG_CMD(dev,where),0xCF8);
outw(value, 0xCFC + (where&2));
return PCIBIOS_SUCCESSFUL;
}
static int
via82c505_write_config_dword(struct pci_dev *dev, int where, u32 value)
{
outl(CONFIG_CMD(dev,where),0xCF8);
outl(value, 0xCFC);
return PCIBIOS_SUCCESSFUL;
}
static struct pci_ops via82c505_ops = {
via82c505_read_config_byte,
via82c505_read_config_word,
via82c505_read_config_dword,
via82c505_write_config_byte,
via82c505_write_config_word,
via82c505_write_config_dword,
};
#ifdef CONFIG_ARCH_SHARK
static char size_wanted;
static int
dummy_read_config_byte(struct pci_dev *dev, int where, u8 *value)
{
*value=0;
return PCIBIOS_SUCCESSFUL;
}
static int
dummy_read_config_word(struct pci_dev *dev, int where, u16 *value)
{
*value=0;
return PCIBIOS_SUCCESSFUL;
}
static int
dummy_read_config_dword(struct pci_dev *dev, int where, u32 *value)
{
if (dev->devfn != 0) *value = 0;
else
switch(where) {
case PCI_VENDOR_ID:
*value = PCI_VENDOR_ID_INTERG | PCI_DEVICE_ID_INTERG_2010 << 16;
break;
case PCI_CLASS_REVISION:
*value = PCI_CLASS_DISPLAY_VGA << 16;
break;
case PCI_BASE_ADDRESS_0:
if (size_wanted) {
/* 0x00900000 bytes long (0xff700000) */
*value = 0xff000000;
size_wanted = 0;
} else {
*value = FB_START;
}
break;
case PCI_INTERRUPT_LINE:
*value = 6;
break;
default:
*value = 0;
}
return PCIBIOS_SUCCESSFUL;
}
static int
dummy_write_config_byte(struct pci_dev *dev, int where, u8 value)
{
return PCIBIOS_SUCCESSFUL;
}
static int
dummy_write_config_word(struct pci_dev *dev, int where, u16 value)
{
return PCIBIOS_SUCCESSFUL;
}
static int
dummy_write_config_dword(struct pci_dev *dev, int where, u32 value)
{
if ((dev->devfn == 0) && (where == PCI_BASE_ADDRESS_0) && (value == 0xffffffff))
size_wanted = 1;
return PCIBIOS_SUCCESSFUL;
}
static struct pci_ops dummy_ops = {
dummy_read_config_byte,
dummy_read_config_word,
dummy_read_config_dword,
dummy_write_config_byte,
dummy_write_config_word,
dummy_write_config_dword,
};
#endif
void __init via82c505_init(void *sysdata)
{
struct pci_bus *bus;
printk(KERN_DEBUG "PCI: VIA 82c505\n");
request_region(0xA8,2,"via config");
request_region(0xCF8,8,"pci config");
/* Enable compatible Mode */
outb(0x96,0xA8);
outb(0x18,0xA9);
outb(0x93,0xA8);
outb(0xd0,0xA9);
pci_scan_bus(0, &via82c505_ops, sysdata);
#ifdef CONFIG_ARCH_SHARK
/*
* Initialize a fake pci-bus number 1 for the CyberPro
* on the vlbus
*/
bus = pci_scan_bus(1, &dummy_ops, sysdata);
#endif
}
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