diff options
| author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2012-07-13 15:55:52 +0100 |
|---|---|---|
| committer | Jon Medhurst <tixy@linaro.org> | 2013-04-29 09:43:08 +0100 |
| commit | 67dc20ed366ed6b4f016b189a1311e1be8cf5f9d (patch) | |
| tree | 5785025a84aa9c33aa500564809e42004ff5923a /include | |
| parent | c1be5a5b1b355d40e6cf79cc979eb66dafa24ad1 (diff) | |
drivers/bus: add ARM CCI support
On ARM multi-cluster systems coherency between cores running on
different clusters is managed by the cache-coherent interconnect (CCI).
It allows broadcasting of TLB invalidates and memory barriers and it
guarantees cache coherency at system level.
This patch enables the basic infrastructure required in Linux to
handle and programme the CCI component. The first implementation is
based on a platform device, its relative DT compatible property and
a simple programming interface.
Very basic for now. More functionalities will come later.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/arm-cci.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/linux/arm-cci.h b/include/linux/arm-cci.h new file mode 100644 index 00000000000..86ae587817a --- /dev/null +++ b/include/linux/arm-cci.h @@ -0,0 +1,30 @@ +/* + * CCI support + * + * Copyright (C) 2012-2013 ARM Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __LINUX_ARM_CCI_H +#define __LINUX_ARM_CCI_H + +#ifdef CONFIG_ARM_CCI +extern void disable_cci(int cluster); +#else +static inline void disable_cci(int cluster) { } +#endif + +#endif |