cache-l2x0.h

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/*
 * arch/arm/include/asm/hardware/cache-l2x0.h
 *
 * Copyright (C) 2007 ARM Limited
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * 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 __ASM_ARM_HARDWARE_L2X0_H
#define __ASM_ARM_HARDWARE_L2X0_H

#include <linux/errno.h>

#define L2X0_CACHE_ID           0x000
#define L2X0_CACHE_TYPE         0x004
#define L2X0_CTRL           0x100
#define L2X0_AUX_CTRL           0x104
#define L2X0_TAG_LATENCY_CTRL       0x108
#define L2X0_DATA_LATENCY_CTRL      0x10C
#define L2X0_EVENT_CNT_CTRL     0x200
#define L2X0_EVENT_CNT1_CFG     0x204
#define L2X0_EVENT_CNT0_CFG     0x208
#define L2X0_EVENT_CNT1_VAL     0x20C
#define L2X0_EVENT_CNT0_VAL     0x210
#define L2X0_INTR_MASK          0x214
#define L2X0_MASKED_INTR_STAT       0x218
#define L2X0_RAW_INTR_STAT      0x21C
#define L2X0_INTR_CLEAR         0x220
#define L2X0_CACHE_SYNC         0x730
#define L2X0_DUMMY_REG          0x740
#define L2X0_INV_LINE_PA        0x770
#define L2X0_INV_WAY            0x77C
#define L2X0_CLEAN_LINE_PA      0x7B0
#define L2X0_CLEAN_LINE_IDX     0x7B8
#define L2X0_CLEAN_WAY          0x7BC
#define L2X0_CLEAN_INV_LINE_PA      0x7F0
#define L2X0_CLEAN_INV_LINE_IDX     0x7F8
#define L2X0_CLEAN_INV_WAY      0x7FC
/*
 * The lockdown registers repeat 8 times for L310, the L210 has only one
 * D and one I lockdown register at 0x0900 and 0x0904.
 */
#define L2X0_LOCKDOWN_WAY_D_BASE    0x900
#define L2X0_LOCKDOWN_WAY_I_BASE    0x904
#define L2X0_LOCKDOWN_STRIDE        0x08
#define L2X0_ADDR_FILTER_START      0xC00
#define L2X0_ADDR_FILTER_END        0xC04
#define L2X0_TEST_OPERATION     0xF00
#define L2X0_LINE_DATA          0xF10
#define L2X0_LINE_TAG           0xF30
#define L2X0_DEBUG_CTRL         0xF40
#define L2X0_PREFETCH_CTRL      0xF60
#define L2X0_POWER_CTRL         0xF80
#define   L2X0_DYNAMIC_CLK_GATING_EN    (1 << 1)
#define   L2X0_STNDBY_MODE_EN       (1 << 0)

/* Registers shifts and masks */
#define L2X0_CACHE_ID_PART_MASK     (0xf << 6)
#define L2X0_CACHE_ID_PART_L210     (1 << 6)
#define L2X0_CACHE_ID_PART_L310     (3 << 6)
#define L2X0_CACHE_ID_RTL_MASK          0x3f
#define L2X0_CACHE_ID_RTL_R0P0          0x0
#define L2X0_CACHE_ID_RTL_R1P0          0x2
#define L2X0_CACHE_ID_RTL_R2P0          0x4
#define L2X0_CACHE_ID_RTL_R3P0          0x5
#define L2X0_CACHE_ID_RTL_R3P1          0x6
#define L2X0_CACHE_ID_RTL_R3P2          0x8

#define L2X0_AUX_CTRL_MASK          0xc0000fff
#define L2X0_AUX_CTRL_DATA_RD_LATENCY_SHIFT 0
#define L2X0_AUX_CTRL_DATA_RD_LATENCY_MASK  0x7
#define L2X0_AUX_CTRL_DATA_WR_LATENCY_SHIFT 3
#define L2X0_AUX_CTRL_DATA_WR_LATENCY_MASK  (0x7 << 3)
#define L2X0_AUX_CTRL_TAG_LATENCY_SHIFT     6
#define L2X0_AUX_CTRL_TAG_LATENCY_MASK      (0x7 << 6)
#define L2X0_AUX_CTRL_DIRTY_LATENCY_SHIFT   9
#define L2X0_AUX_CTRL_DIRTY_LATENCY_MASK    (0x7 << 9)
#define L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT   16
#define L2X0_AUX_CTRL_WAY_SIZE_SHIFT        17
#define L2X0_AUX_CTRL_WAY_SIZE_MASK     (0x7 << 17)
#define L2X0_AUX_CTRL_SHARE_OVERRIDE_SHIFT  22
#define L2X0_AUX_CTRL_NS_LOCKDOWN_SHIFT     26
#define L2X0_AUX_CTRL_NS_INT_CTRL_SHIFT     27
#define L2X0_AUX_CTRL_DATA_PREFETCH_SHIFT   28
#define L2X0_AUX_CTRL_INSTR_PREFETCH_SHIFT  29
#define L2X0_AUX_CTRL_EARLY_BRESP_SHIFT     30

#define L2X0_LATENCY_CTRL_SETUP_SHIFT   0
#define L2X0_LATENCY_CTRL_RD_SHIFT  4
#define L2X0_LATENCY_CTRL_WR_SHIFT  8

#define L2X0_ADDR_FILTER_EN     1

#ifndef __ASSEMBLY__
extern void __init l2x0_init(void __iomem *base, u32 aux_val, u32 aux_mask);
#if defined(CONFIG_CACHE_L2X0) && defined(CONFIG_OF)
extern int l2x0_of_init(u32 aux_val, u32 aux_mask);
#else
static inline int l2x0_of_init(u32 aux_val, u32 aux_mask)
{
    return -ENODEV;
}
#endif

struct l2x0_regs {
    unsigned long phy_base;
    unsigned long aux_ctrl;
    /*
     * Whether the following registers need to be saved/restored
     * depends on platform
     */
    unsigned long tag_latency;
    unsigned long data_latency;
    unsigned long filter_start;
    unsigned long filter_end;
    unsigned long prefetch_ctrl;
    unsigned long pwr_ctrl;
};

extern struct l2x0_regs l2x0_saved_regs;

#endif /* __ASSEMBLY__ */

#endif