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- /*
- * 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
- */
- #ifdef CONFIG_HAS_IOPORT
- void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
- unsigned int nr);
- void devm_ioport_unmap(struct device *dev, void __iomem *addr);
- #else
- static inline void __iomem *devm_ioport_map(struct device *dev,
- unsigned long port,
- unsigned int nr)
- {
- return NULL;
- }
- static inline void devm_ioport_unmap(struct device *dev, void __iomem *addr)
- {
- }
- #endif
- 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 */
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