diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/xtensa/include/asm/io.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/xtensa/include/asm/io.h')
-rw-r--r-- | kernel/arch/xtensa/include/asm/io.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/kernel/arch/xtensa/include/asm/io.h b/kernel/arch/xtensa/include/asm/io.h new file mode 100644 index 000000000..fe1600a09 --- /dev/null +++ b/kernel/arch/xtensa/include/asm/io.h @@ -0,0 +1,81 @@ +/* + * include/asm-xtensa/io.h + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2001 - 2005 Tensilica Inc. + */ + +#ifndef _XTENSA_IO_H +#define _XTENSA_IO_H + +#ifdef __KERNEL__ +#include <asm/byteorder.h> +#include <asm/page.h> +#include <asm/vectors.h> +#include <linux/bug.h> +#include <linux/kernel.h> + +#include <linux/types.h> + +#define IOADDR(x) (XCHAL_KIO_BYPASS_VADDR + (x)) +#define IO_SPACE_LIMIT ~0 + +#ifdef CONFIG_MMU + +#if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY && defined(CONFIG_OF) +extern unsigned long xtensa_kio_paddr; + +static inline unsigned long xtensa_get_kio_paddr(void) +{ + return xtensa_kio_paddr; +} +#endif + +/* + * Return the virtual address for the specified bus memory. + * Note that we currently don't support any address outside the KIO segment. + */ +static inline void __iomem *ioremap_nocache(unsigned long offset, + unsigned long size) +{ + if (offset >= XCHAL_KIO_PADDR + && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE) + return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR); + else + BUG(); +} + +static inline void __iomem *ioremap_cache(unsigned long offset, + unsigned long size) +{ + if (offset >= XCHAL_KIO_PADDR + && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE) + return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR); + else + BUG(); +} + +#define ioremap_wc ioremap_nocache + +static inline void __iomem *ioremap(unsigned long offset, unsigned long size) +{ + return ioremap_nocache(offset, size); +} + +static inline void iounmap(volatile void __iomem *addr) +{ +} + +#define virt_to_bus virt_to_phys +#define bus_to_virt phys_to_virt + +#endif /* CONFIG_MMU */ + +#endif /* __KERNEL__ */ + +#include <asm-generic/io.h> + +#endif /* _XTENSA_IO_H */ |