cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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io.h (1959B)

      1/*
      2 * include/asm-xtensa/io.h
      3 *
      4 * This file is subject to the terms and conditions of the GNU General Public
      5 * License.  See the file "COPYING" in the main directory of this archive
      6 * for more details.
      7 *
      8 * Copyright (C) 2001 - 2005 Tensilica Inc.
      9 */
     10
     11#ifndef _XTENSA_IO_H
     12#define _XTENSA_IO_H
     13
     14#include <asm/byteorder.h>
     15#include <asm/page.h>
     16#include <asm/vectors.h>
     17#include <linux/bug.h>
     18#include <linux/kernel.h>
     19
     20#include <linux/types.h>
     21
     22#define IOADDR(x)		(XCHAL_KIO_BYPASS_VADDR + (x))
     23#define IO_SPACE_LIMIT ~0
     24#define PCI_IOBASE		((void __iomem *)XCHAL_KIO_BYPASS_VADDR)
     25
     26#ifdef CONFIG_MMU
     27
     28void __iomem *xtensa_ioremap_nocache(unsigned long addr, unsigned long size);
     29void __iomem *xtensa_ioremap_cache(unsigned long addr, unsigned long size);
     30void xtensa_iounmap(volatile void __iomem *addr);
     31
     32/*
     33 * Return the virtual address for the specified bus memory.
     34 */
     35static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
     36{
     37	if (offset >= XCHAL_KIO_PADDR
     38	    && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
     39		return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
     40	else
     41		return xtensa_ioremap_nocache(offset, size);
     42}
     43
     44static inline void __iomem *ioremap_cache(unsigned long offset,
     45		unsigned long size)
     46{
     47	if (offset >= XCHAL_KIO_PADDR
     48	    && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
     49		return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
     50	else
     51		return xtensa_ioremap_cache(offset, size);
     52}
     53#define ioremap_cache ioremap_cache
     54
     55static inline void iounmap(volatile void __iomem *addr)
     56{
     57	unsigned long va = (unsigned long) addr;
     58
     59	if (!(va >= XCHAL_KIO_CACHED_VADDR &&
     60	      va - XCHAL_KIO_CACHED_VADDR < XCHAL_KIO_SIZE) &&
     61	    !(va >= XCHAL_KIO_BYPASS_VADDR &&
     62	      va - XCHAL_KIO_BYPASS_VADDR < XCHAL_KIO_SIZE))
     63		xtensa_iounmap(addr);
     64}
     65
     66#define virt_to_bus     virt_to_phys
     67#define bus_to_virt     phys_to_virt
     68
     69#endif /* CONFIG_MMU */
     70
     71#include <asm-generic/io.h>
     72
     73#endif	/* _XTENSA_IO_H */