From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: 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 Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior 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 --- kernel/arch/sh/mm/cache-shx3.c | 44 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 kernel/arch/sh/mm/cache-shx3.c (limited to 'kernel/arch/sh/mm/cache-shx3.c') diff --git a/kernel/arch/sh/mm/cache-shx3.c b/kernel/arch/sh/mm/cache-shx3.c new file mode 100644 index 000000000..24c58b7dc --- /dev/null +++ b/kernel/arch/sh/mm/cache-shx3.c @@ -0,0 +1,44 @@ +/* + * arch/sh/mm/cache-shx3.c - SH-X3 optimized cache ops + * + * Copyright (C) 2010 Paul Mundt + * + * 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. + */ +#include +#include +#include +#include + +#define CCR_CACHE_SNM 0x40000 /* Hardware-assisted synonym avoidance */ +#define CCR_CACHE_IBE 0x1000000 /* ICBI broadcast */ + +void __init shx3_cache_init(void) +{ + unsigned int ccr; + + ccr = __raw_readl(SH_CCR); + + /* + * If we've got cache aliases, resolve them in hardware. + */ + if (boot_cpu_data.dcache.n_aliases || boot_cpu_data.icache.n_aliases) { + ccr |= CCR_CACHE_SNM; + + boot_cpu_data.icache.n_aliases = 0; + boot_cpu_data.dcache.n_aliases = 0; + + pr_info("Enabling hardware synonym avoidance\n"); + } + +#ifdef CONFIG_SMP + /* + * Broadcast I-cache block invalidations by default. + */ + ccr |= CCR_CACHE_IBE; +#endif + + writel_uncached(ccr, SH_CCR); +} -- cgit 1.2.3-korg