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/metag/include/asm/hwthread.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/metag/include/asm/hwthread.h')
-rw-r--r-- | kernel/arch/metag/include/asm/hwthread.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/kernel/arch/metag/include/asm/hwthread.h b/kernel/arch/metag/include/asm/hwthread.h new file mode 100644 index 000000000..8f9786619 --- /dev/null +++ b/kernel/arch/metag/include/asm/hwthread.h @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2008 Imagination Technologies + */ +#ifndef __METAG_HWTHREAD_H +#define __METAG_HWTHREAD_H + +#include <linux/bug.h> +#include <linux/io.h> + +#include <asm/metag_mem.h> + +#define BAD_HWTHREAD_ID (0xFFU) +#define BAD_CPU_ID (0xFFU) + +extern u8 cpu_2_hwthread_id[]; +extern u8 hwthread_id_2_cpu[]; + +/* + * Each hardware thread's Control Unit registers are memory-mapped + * and can therefore be accessed by any other hardware thread. + * + * This helper function returns the memory address where "thread"'s + * register "regnum" is mapped. + */ +static inline +void __iomem *__CU_addr(unsigned int thread, unsigned int regnum) +{ + unsigned int base, thread_offset, thread_regnum; + + WARN_ON(thread == BAD_HWTHREAD_ID); + + base = T0UCTREG0; /* Control unit base */ + + thread_offset = TnUCTRX_STRIDE * thread; + thread_regnum = TXUCTREGn_STRIDE * regnum; + + return (void __iomem *)(base + thread_offset + thread_regnum); +} + +#endif /* __METAG_HWTHREAD_H */ |