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authorRob Herring <rob.herring@calxeda.com>2012-02-28 13:15:43 -0600
committerRob Herring <rob.herring@calxeda.com>2012-07-26 09:09:58 -0500
commitc04dc9a6bfe88b8c15bf8dd298fc24d6b9df3f22 (patch)
tree31710d95a5f232ef04f1a51b69f8288cfbec325e
parent29d396047939c559dc1fd42f2d43fd6006082b07 (diff)
downloadlinaro-lsk-c04dc9a6bfe88b8c15bf8dd298fc24d6b9df3f22.tar.gz
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>
-rw-r--r--arch/arm/Kconfig1
-rw-r--r--arch/arm/mach-shark/core.c18
-rw-r--r--arch/arm/mach-shark/include/mach/debug-macro.S7
-rw-r--r--arch/arm/mach-shark/include/mach/entry-macro.S3
-rw-r--r--arch/arm/mach-shark/include/mach/io.h18
-rw-r--r--arch/arm/mach-shark/pci.c5
6 files changed, 11 insertions, 41 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 5d376283b7a..3dfc555219b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -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>).
diff --git a/arch/arm/mach-shark/core.c b/arch/arm/mach-shark/core.c
index 2704bcd869c..d35b94ef73b 100644
--- a/arch/arm/mach-shark/core.c
+++ b/arch/arm/mach-shark/core.c
@@ -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,
diff --git a/arch/arm/mach-shark/include/mach/debug-macro.S b/arch/arm/mach-shark/include/mach/debug-macro.S
index 20eb2bf2a42..d129119a3f6 100644
--- a/arch/arm/mach-shark/include/mach/debug-macro.S
+++ b/arch/arm/mach-shark/include/mach/debug-macro.S
@@ -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
diff --git a/arch/arm/mach-shark/include/mach/entry-macro.S b/arch/arm/mach-shark/include/mach/entry-macro.S
index 5901b09fc96..c9e49f04953 100644
--- a/arch/arm/mach-shark/include/mach/entry-macro.S
+++ b/arch/arm/mach-shark/include/mach/entry-macro.S
@@ -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
diff --git a/arch/arm/mach-shark/include/mach/io.h b/arch/arm/mach-shark/include/mach/io.h
deleted file mode 100644
index 1a45fc01ff1..00000000000
--- a/arch/arm/mach-shark/include/mach/io.h
+++ /dev/null
@@ -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
diff --git a/arch/arm/mach-shark/pci.c b/arch/arm/mach-shark/pci.c
index 9089407d532..b8b4ab323a3 100644
--- a/arch/arm/mach-shark/pci.c
+++ b/arch/arm/mach-shark/pci.c
@@ -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;