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/*
* arch/arm/mm/mm-ebsa285.c
*
* Extra MM routines for the EBSA285 architecture
*
* Copyright (C) 1998 Russell King, Dave Gilbert.
*/
#include <linux/config.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/io.h>
#include <asm/proc/mm-init.h>
/*
* These two functions convert PCI bus addresses to virtual addresses
* and back again.
*/
unsigned long __virt_to_bus(unsigned long res)
{
if (res < PAGE_OFFSET || res >= 0xD0000000) {
printk("__virt_to_bus: invalid address 0x%08lx\n", res);
#ifdef CONFIG_DEBUG_ERRORS
__backtrace();
#endif
} else
res = (res - PAGE_OFFSET) + 0x10000000;
return res;
}
unsigned long __bus_to_virt(unsigned long res)
{
if (res < 0x10000000 || res >= 0x20000000) {
printk("__bus_to_virt: invalid address 0x%08lx\n", res);
#ifdef CONFIG_DEBUG_ERRORS
__backtrace();
#endif
} else
res = (res - 0x10000000) + PAGE_OFFSET;
return res;
}
/* Logical Physical
* 0xfff00000 0x40000000 X-Bus
* 0xffe00000 0x7c000000 PCI I/O space
* 0xfe000000 0x42000000 CSR
* 0xfd000000 0x78000000 Outbound write flush
* 0xfc000000 0x79000000 PCI IACK/special space
* 0xf9000000 0x7a000000 PCI Config type 1
* 0xf8000000 0x7b000000 PCI Config type 0
*/
/*
* This is to allow us to fiddle with the EEPROM
* This entry will go away in time, once the fmu
* can mmap() the flash.
*
* These ones are so that we can fiddle
* with the various cards (eg VGA)
* until we're happy with them...
*/
#define MAPPING \
{ 0xd8000000, 0x41000000, 0x00400000, DOMAIN_USER, 1, 1 }, /* EEPROM */ \
{ 0xdc000000, 0x7c000000, 0x00100000, DOMAIN_USER, 1, 1 }, /* VGA */ \
{ 0xe0000000, 0x80000000, 0x10000000, DOMAIN_USER, 1, 1 }, /* VGA */ \
{ 0xf8000000, 0x7b000000, 0x01000000, DOMAIN_IO , 0, 1 }, /* Type 0 Config */ \
{ 0xf9000000, 0x7a000000, 0x01000000, DOMAIN_IO , 0, 1 }, /* Type 1 Config */ \
{ 0xfc000000, 0x79000000, 0x01000000, DOMAIN_IO , 0, 1 }, /* PCI IACK */ \
{ 0xfd000000, 0x78000000, 0x01000000, DOMAIN_IO , 0, 1 }, /* Outbound wflsh*/ \
{ 0xfe000000, 0x42000000, 0x01000000, DOMAIN_IO , 0, 1 }, /* CSR */ \
{ 0xffe00000, 0x7c000000, 0x00100000, DOMAIN_IO , 0, 1 }, /* PCI I/O */ \
{ 0xfff00000, 0x40000000, 0x00100000, DOMAIN_IO , 0, 1 }, /* X-Bus */
#include "mm-armv.c"
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