linux/arch/arm/mm/cache-aurora-l2.h
Gregory CLEMENT b8db6b886a ARM: 7547/4: cache-l2x0: add support for Aurora L2 cache ctrl
Aurora Cache Controller was designed to be compatible with the ARM L2
Cache Controller. It comes with some difference or improvement such
as:
- no cache id part number available through hardware (need to get it
  by the DT).
- always write through mode available.
- two flavors of the controller outer cache and system cache (meaning
  maintenance operations on L1 are broadcasted to the L2 and L2
  performs the same operation).
- in outer cache mode, the cache maintenance operations are improved and
  can be done on a range inside a page and are not limited to a cache
  line.

Tested-and-Reviewed-by: Lior Amsalem <alior@marvell.com>

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Yehuda Yitschak <yehuday@marvell.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-11-06 19:47:35 +00:00

56 lines
1.8 KiB
C

/*
* AURORA shared L2 cache controller support
*
* Copyright (C) 2012 Marvell
*
* Yehuda Yitschak <yehuday@marvell.com>
* Gregory CLEMENT <gregory.clement@free-electrons.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef __ASM_ARM_HARDWARE_AURORA_L2_H
#define __ASM_ARM_HARDWARE_AURORA_L2_H
#define AURORA_SYNC_REG 0x700
#define AURORA_RANGE_BASE_ADDR_REG 0x720
#define AURORA_FLUSH_PHY_ADDR_REG 0x7f0
#define AURORA_INVAL_RANGE_REG 0x774
#define AURORA_CLEAN_RANGE_REG 0x7b4
#define AURORA_FLUSH_RANGE_REG 0x7f4
#define AURORA_ACR_REPLACEMENT_OFFSET 27
#define AURORA_ACR_REPLACEMENT_MASK \
(0x3 << AURORA_ACR_REPLACEMENT_OFFSET)
#define AURORA_ACR_REPLACEMENT_TYPE_WAYRR \
(0 << AURORA_ACR_REPLACEMENT_OFFSET)
#define AURORA_ACR_REPLACEMENT_TYPE_LFSR \
(1 << AURORA_ACR_REPLACEMENT_OFFSET)
#define AURORA_ACR_REPLACEMENT_TYPE_SEMIPLRU \
(3 << AURORA_ACR_REPLACEMENT_OFFSET)
#define AURORA_ACR_FORCE_WRITE_POLICY_OFFSET 0
#define AURORA_ACR_FORCE_WRITE_POLICY_MASK \
(0x3 << AURORA_ACR_FORCE_WRITE_POLICY_OFFSET)
#define AURORA_ACR_FORCE_WRITE_POLICY_DIS \
(0 << AURORA_ACR_FORCE_WRITE_POLICY_OFFSET)
#define AURORA_ACR_FORCE_WRITE_BACK_POLICY \
(1 << AURORA_ACR_FORCE_WRITE_POLICY_OFFSET)
#define AURORA_ACR_FORCE_WRITE_THRO_POLICY \
(2 << AURORA_ACR_FORCE_WRITE_POLICY_OFFSET)
#define MAX_RANGE_SIZE 1024
#define AURORA_WAY_SIZE_SHIFT 2
#define AURORA_CTRL_FW 0x100
/* chose a number outside L2X0_CACHE_ID_PART_MASK to be sure to make
* the distinction between a number coming from hardware and a number
* coming from the device tree */
#define AURORA_CACHE_ID 0x100
#endif /* __ASM_ARM_HARDWARE_AURORA_L2_H */