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ARM: fix __io macro for PCMCIA

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With commit c334bc1 (ARM: make mach/io.h include optional), PCMCIA was
broken. PCMCIA depends on __io() returning a valid i/o address, and most
ARM platforms require IO_SPACE_LIMIT be set to 0xffffffff for PCMCIA. This
needs a better fix with a fixed i/o address mapping, but for now we just
restore things to the previous behavior.

This fixes at91, omap1, pxa and sa11xx. pxa needs io.h if PCI is enabled,
but PCMCIA is not. sa11xx already has IO_SPACE_LIMIT set to 0xffffffff,
so it doesn't need an io.h.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Joachim Eastwood <joachim.eastwood@jotron.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Tested-by: Paul Parsons <lost.distance@yahoo.com> (pxa270)
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Rob Herring 2012-04-04 17:48:04 -05:00 committed by Olof Johansson
parent 00bd60fe33
commit 1ac02d7958
7 changed files with 93 additions and 1 deletions
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1
arch/arm/Kconfig
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@ -338,6 +338,7 @@ config ARCH_AT91
select HAVE_CLK
select CLKDEV_LOOKUP
select IRQ_DOMAIN
select NEED_MACH_IO_H if PCCARD
help
This enables support for systems based on the Atmel AT91RM9200,
AT91SAM9 processors.

2
arch/arm/include/asm/io.h
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@ -119,7 +119,7 @@ static inline void __iomem *__typesafe_io(unsigned long addr)
#ifdef CONFIG_NEED_MACH_IO_H
#include <mach/io.h>
#else
#define __io(a) ({ (void)(a); __typesafe_io(0); })
#define __io(a) __typesafe_io((a) & IO_SPACE_LIMIT)
#endif
/*

27
arch/arm/mach-at91/include/mach/io.h Normal file
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@ -0,0 +1,27 @@
/*
* arch/arm/mach-at91/include/mach/io.h
*
* Copyright (C) 2003 SAN People
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_IO_H
#define __ASM_ARCH_IO_H
#define IO_SPACE_LIMIT 0xFFFFFFFF
#define __io(a) __typesafe_io(a)
#endif

45
arch/arm/mach-omap1/include/mach/io.h Normal file
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@ -0,0 +1,45 @@
/*
* arch/arm/mach-omap1/include/mach/io.h
*
* IO definitions for TI OMAP processors and boards
*
* Copied from arch/arm/mach-sa1100/include/mach/io.h
* Copyright (C) 1997-1999 Russell King
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Modifications:
* 06-12-1997 RMK Created.
* 07-04-1999 RMK Major cleanup
*/
#ifndef __ASM_ARM_ARCH_IO_H
#define __ASM_ARM_ARCH_IO_H
#define IO_SPACE_LIMIT 0xffffffff
/*
* We don't actually have real ISA nor PCI buses, but there is so many
* drivers out there that might just work if we fake them...
*/
#define __io(a) __typesafe_io(a)
#endif

1
arch/arm/mach-pxa/Kconfig
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@ -113,6 +113,7 @@ config MACH_ARMCORE
select IWMMXT
select PXA25x
select MIGHT_HAVE_PCI
select NEED_MACH_IO_H if PCI
config MACH_EM_X270
bool "CompuLab EM-x270 platform"

17
arch/arm/mach-pxa/include/mach/io.h Normal file
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@ -0,0 +1,17 @@
/*
* arch/arm/mach-pxa/include/mach/io.h
*
* Copied from asm/arch/sa1100/io.h
*/
#ifndef __ASM_ARM_ARCH_IO_H
#define __ASM_ARM_ARCH_IO_H
#define IO_SPACE_LIMIT 0xffffffff
/*
* We don't actually have real ISA nor PCI buses, but there is so many
* drivers out there that might just work if we fake them...
*/
#define __io(a) __typesafe_io(a)
#endif

1
arch/arm/plat-omap/Kconfig
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@ -17,6 +17,7 @@ config ARCH_OMAP1
select IRQ_DOMAIN
select HAVE_IDE
select NEED_MACH_MEMORY_H
select NEED_MACH_IO_H if PCCARD
help
"Systems based on omap7xx, omap15xx or omap16xx"