![Al Viro](/assets/img/avatar_default.png)
* Split the implementation-agnostic stuff in separate files. * Make sure that targets using non-default request_irq() pull kernel/irq/devres.o * Introduce new symbols (HAS_IOPORT and HAS_IOMEM) defaulting to positive; allow architectures to turn them off (we needed these symbols anyway for dependencies of quite a few drivers). * protect the ioport-related parts of lib/devres.o with CONFIG_HAS_IOPORT. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/*
|
|
* Copyright 2006 PathScale, Inc. All Rights Reserved.
|
|
*
|
|
* This file is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef _LINUX_IO_H
|
|
#define _LINUX_IO_H
|
|
|
|
#include <linux/types.h>
|
|
#include <asm/io.h>
|
|
#include <asm/page.h>
|
|
|
|
struct device;
|
|
|
|
void __iowrite32_copy(void __iomem *to, const void *from, size_t count);
|
|
void __iowrite64_copy(void __iomem *to, const void *from, size_t count);
|
|
|
|
int ioremap_page_range(unsigned long addr, unsigned long end,
|
|
unsigned long phys_addr, pgprot_t prot);
|
|
|
|
/*
|
|
* Managed iomap interface
|
|
*/
|
|
void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
|
|
unsigned int nr);
|
|
void devm_ioport_unmap(struct device *dev, void __iomem *addr);
|
|
|
|
void __iomem * devm_ioremap(struct device *dev, unsigned long offset,
|
|
unsigned long size);
|
|
void __iomem * devm_ioremap_nocache(struct device *dev, unsigned long offset,
|
|
unsigned long size);
|
|
void devm_iounmap(struct device *dev, void __iomem *addr);
|
|
|
|
/**
|
|
* check_signature - find BIOS signatures
|
|
* @io_addr: mmio address to check
|
|
* @signature: signature block
|
|
* @length: length of signature
|
|
*
|
|
* Perform a signature comparison with the mmio address io_addr. This
|
|
* address should have been obtained by ioremap.
|
|
* Returns 1 on a match.
|
|
*/
|
|
|
|
static inline int check_signature(const volatile void __iomem *io_addr,
|
|
const unsigned char *signature, int length)
|
|
{
|
|
int retval = 0;
|
|
do {
|
|
if (readb(io_addr) != *signature)
|
|
goto out;
|
|
io_addr++;
|
|
signature++;
|
|
length--;
|
|
} while (length);
|
|
retval = 1;
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
#endif /* _LINUX_IO_H */
|