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ARM: shark: use fixed PCI i/o mapping 

Convert shark to use the fixed i/o mapping and remove io.h.

This shrinks the mapping from 256MB to 1MB, but nothing is using that much
space AFAICT.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Rob Herring 2012-02-28 13:15:43 -06:00
parent 29d3960479
commit c04dc9a6bf
6 changed files with 11 additions and 41 deletions
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1
arch/arm/Kconfig
View File

@ -869,7 +869,6 @@ config ARCH_SHARK
select PCI
select ARCH_USES_GETTIMEOFFSET
select NEED_MACH_MEMORY_H
select NEED_MACH_IO_H
help
Support for the StrongARM based Digital DNARD machine, also known
as "Shark" (<http://www.shark-linux.de/shark.html>).

18
arch/arm/mach-shark/core.c
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@ -21,9 +21,6 @@
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#define IO_BASE 0xe0000000
#define IO_SIZE 0x08000000
#define IO_START 0x40000000
#define ROMCARD_SIZE 0x08000000
#define ROMCARD_START 0x10000000
@ -104,20 +101,6 @@ arch_initcall(shark_init);
extern void shark_init_irq(void);
static struct map_desc shark_io_desc[] __initdata = {
{
.virtual = IO_BASE,
.pfn = __phys_to_pfn(IO_START),
.length = IO_SIZE,
.type = MT_DEVICE
}
};
static void __init shark_map_io(void)
{
iotable_init(shark_io_desc, ARRAY_SIZE(shark_io_desc));
}
#define IRQ_TIMER 0
#define HZ_TIME ((1193180 + HZ/2) / HZ)
@ -158,7 +141,6 @@ static void shark_init_early(void)
MACHINE_START(SHARK, "Shark")
/* Maintainer: Alexander Schulz */
.atag_offset = 0x3000,
.map_io = shark_map_io,
.init_early = shark_init_early,
.init_irq = shark_init_irq,
.timer = &shark_timer,

7
arch/arm/mach-shark/include/mach/debug-macro.S
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@ -12,9 +12,10 @@
*/
.macro addruart, rp, rv, tmp
mov \rp, #0xe0000000
orr \rp, \rp, #0x000003f8
mov \rv, \rp
mov \rp, #0x3f8
orr \rv, \rp, #0xfe000000
orr \rv, \rv, #0x00e00000
orr \rp, \rp, #0x40000000
.endm
.macro senduart,rd,rx

3
arch/arm/mach-shark/include/mach/entry-macro.S
View File

@ -8,7 +8,8 @@
* warranty of any kind, whether express or implied.
*/
.macro get_irqnr_preamble, base, tmp
mov \base, #0xe0000000
mov \base, #0xfe000000
orr \base, \base, #0x00e00000
.endm
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp

18
arch/arm/mach-shark/include/mach/io.h
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@ -1,18 +0,0 @@
/*
* arch/arm/mach-shark/include/mach/io.h
*
* by Alexander Schulz
*
* derived from:
* arch/arm/mach-ebsa110/include/mach/io.h
* Copyright (C) 1997,1998 Russell King
*/
#ifndef __ASM_ARM_ARCH_IO_H
#define __ASM_ARM_ARCH_IO_H
#define IO_SPACE_LIMIT 0xffffffff
#define __io(a) ((void __iomem *)(0xe0000000 + (a)))
#endif

5
arch/arm/mach-shark/pci.c
View File

@ -8,12 +8,15 @@
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/io.h>
#include <video/vga.h>
#include <asm/irq.h>
#include <asm/mach/pci.h>
#include <asm/mach-types.h>
#define IO_START 0x40000000
static int __init shark_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
if (dev->bus->number == 0)
@ -44,6 +47,8 @@ static int __init shark_pci_init(void)
pcibios_min_mem = 0x50000000;
vga_base = 0xe8000000;
pci_ioremap_io(0, IO_START);
pci_common_init(&shark_pci);
return 0;