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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/arm/mach-footbridge/include/mach/memory.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/arm/mach-footbridge/include/mach/memory.h')
-rw-r--r-- | kernel/arch/arm/mach-footbridge/include/mach/memory.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-footbridge/include/mach/memory.h b/kernel/arch/arm/mach-footbridge/include/mach/memory.h new file mode 100644 index 000000000..6f2ecccdf --- /dev/null +++ b/kernel/arch/arm/mach-footbridge/include/mach/memory.h @@ -0,0 +1,64 @@ +/* + * arch/arm/mach-footbridge/include/mach/memory.h + * + * Copyright (C) 1996-1999 Russell King. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Changelog: + * 20-Oct-1996 RMK Created + * 31-Dec-1997 RMK Fixed definitions to reduce warnings. + * 17-May-1998 DAG Added __virt_to_bus and __bus_to_virt functions. + * 21-Nov-1998 RMK Changed __virt_to_bus and __bus_to_virt to macros. + * 21-Mar-1999 RMK Added PAGE_OFFSET for co285 architecture. + * Renamed to memory.h + * Moved PAGE_OFFSET and TASK_SIZE here + */ +#ifndef __ASM_ARCH_MEMORY_H +#define __ASM_ARCH_MEMORY_H + + +#if defined(CONFIG_FOOTBRIDGE_ADDIN) +/* + * If we may be using add-in footbridge mode, then we must + * use the out-of-line translation that makes use of the + * PCI BAR + */ +#ifndef __ASSEMBLY__ +extern unsigned long __virt_to_bus(unsigned long); +extern unsigned long __bus_to_virt(unsigned long); +extern unsigned long __pfn_to_bus(unsigned long); +extern unsigned long __bus_to_pfn(unsigned long); +#endif +#define __virt_to_bus __virt_to_bus +#define __bus_to_virt __bus_to_virt + +#elif defined(CONFIG_FOOTBRIDGE_HOST) + +/* + * The footbridge is programmed to expose the system RAM at 0xe0000000. + * The requirement is that the RAM isn't placed at bus address 0, which + * would clash with VGA cards. + */ +#define BUS_OFFSET 0xe0000000 +#define __virt_to_bus(x) ((x) + (BUS_OFFSET - PAGE_OFFSET)) +#define __bus_to_virt(x) ((x) - (BUS_OFFSET - PAGE_OFFSET)) +#define __pfn_to_bus(x) (__pfn_to_phys(x) + (BUS_OFFSET - PHYS_OFFSET)) +#define __bus_to_pfn(x) __phys_to_pfn((x) - (BUS_OFFSET - PHYS_OFFSET)) + +#else + +#error "Undefined footbridge mode" + +#endif + +/* + * Cache flushing area. + */ +#define FLUSH_BASE 0xf9000000 + +#define FLUSH_BASE_PHYS 0x50000000 + +#endif |