Commit 66eab4df authored by Michael S. Tsirkin's avatar Michael S. Tsirkin
Browse files

lib: add GENERIC_PCI_IOMAP 



Many architectures want a generic pci_iomap but
not the rest of iomap.c. Split that to a separate .c
file and add a new config symbol. select automatically
by GENERIC_IOMAP.

Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 4673ca8e

include/asm-generic/io.h

+2 −2
Original line number Diff line number Diff line
@@ -19,6 +19,8 @@ 
#include <asm-generic/iomap.h>

#endif



#include <asm-generic/pci_iomap.h>



#ifndef mmiowb

#define mmiowb() do {} while (0)

#endif
@@ -283,9 +285,7 @@ static inline void writesb(const void __iomem *addr, const void *buf, int len) 
#define __io_virt(x) ((void __force *) (x))



#ifndef CONFIG_GENERIC_IOMAP

/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */

struct pci_dev;

extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);

static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)

{

}

include/asm-generic/iomap.h

+3 −6
Original line number Diff line number Diff line
@@ -67,18 +67,15 @@ extern void ioport_unmap(void __iomem *); 
#endif



#ifdef CONFIG_PCI

/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */

/* Destroy a virtual mapping cookie for a PCI BAR (memory or IO) */

struct pci_dev;

extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);

extern void pci_iounmap(struct pci_dev *dev, void __iomem *);

#else

struct pci_dev;

static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)

{

	return NULL;

}

static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)

{ }

#endif



#include <asm-generic/pci_iomap.h>



#endif

include/asm-generic/pci_iomap.h

0 → 100644
+25 −0
Original line number Diff line number Diff line 
/* Generic I/O port emulation, based on MN10300 code

 *

 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.

 * Written by David Howells (dhowells@redhat.com)

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public Licence

 * as published by the Free Software Foundation; either version

 * 2 of the Licence, or (at your option) any later version.

 */

#ifndef __ASM_GENERIC_PCI_IOMAP_H

#define __ASM_GENERIC_PCI_IOMAP_H



struct pci_dev;

#ifdef CONFIG_PCI

/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */

extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);

#else

static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)

{

	return NULL;

}

#endif



#endif /* __ASM_GENERIC_IO_H */

lib/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -19,8 +19,12 @@ config RATIONAL 
config GENERIC_FIND_FIRST_BIT

	bool



config GENERIC_PCI_IOMAP

	bool



config GENERIC_IOMAP

	bool

	select GENERIC_PCI_IOMAP



config CRC_CCITT

	tristate "CRC-CCITT functions"

lib/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ endif 


lib-$(CONFIG_HOTPLUG) += kobject_uevent.o

obj-$(CONFIG_GENERIC_IOMAP) += iomap.o

obj-$(CONFIG_GENERIC_PCI_IOMAP) += pci_iomap.o

obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o

obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o

obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o