From 3c1fbd5184f9c3c52c0a392fae0efb0b0d99a079 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Tue, 18 Nov 2008 17:48:22 +0800 Subject: Blackfin arch: rewrite blackfin_invalidate_entire_dcache function rewrite blackfin_invalidate_entire_dcache() in C for easier management, better optimization, and so we take all SSYNC anomalies into account Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu --- arch/blackfin/mach-common/cache-c.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 arch/blackfin/mach-common/cache-c.c (limited to 'arch/blackfin/mach-common/cache-c.c') diff --git a/arch/blackfin/mach-common/cache-c.c b/arch/blackfin/mach-common/cache-c.c new file mode 100644 index 000000000000..e6ab1f815123 --- /dev/null +++ b/arch/blackfin/mach-common/cache-c.c @@ -0,0 +1,24 @@ +/* + * Blackfin cache control code (simpler control-style functions) + * + * Copyright 2004-2008 Analog Devices Inc. + * + * Enter bugs at http://blackfin.uclinux.org/ + * + * Licensed under the GPL-2 or later. + */ + +#include + +/* Invalidate the Entire Data cache by + * clearing DMC[1:0] bits + */ +void blackfin_invalidate_entire_dcache(void) +{ + u32 dmem = bfin_read_DMEM_CONTROL(); + SSYNC(); + bfin_write_DMEM_CONTROL(dmem & ~0xc); + SSYNC(); + bfin_write_DMEM_CONTROL(dmem); + SSYNC(); +} -- cgit v1.2.1