arch/arm/include/asm/hardware/cache-l2x0.h

   1 /*
   2  * arch/arm/include/asm/hardware/cache-l2x0.h
   3  *
   4  * Copyright (C) 2007 ARM Limited
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18  */
  19
  20 #ifndef __ASM_ARM_HARDWARE_L2X0_H
  21 #define __ASM_ARM_HARDWARE_L2X0_H
  22
  23 #include <linux/errno.h>
  24
  25 #define L2X0_CACHE_ID                   0x000
  26 #define L2X0_CACHE_TYPE                 0x004
  27 #define L2X0_CTRL                       0x100
  28 #define L2X0_AUX_CTRL                   0x104
  29 #define L2X0_TAG_LATENCY_CTRL           0x108
  30 #define L2X0_DATA_LATENCY_CTRL          0x10C
  31 #define L2X0_EVENT_CNT_CTRL             0x200
  32 #define L2X0_EVENT_CNT1_CFG             0x204
  33 #define L2X0_EVENT_CNT0_CFG             0x208
  34 #define L2X0_EVENT_CNT1_VAL             0x20C
  35 #define L2X0_EVENT_CNT0_VAL             0x210
  36 #define L2X0_INTR_MASK                  0x214
  37 #define L2X0_MASKED_INTR_STAT           0x218
  38 #define L2X0_RAW_INTR_STAT              0x21C
  39 #define L2X0_INTR_CLEAR                 0x220
  40 #define L2X0_CACHE_SYNC                 0x730
  41 #define L2X0_DUMMY_REG                  0x740
  42 #define L2X0_INV_LINE_PA                0x770
  43 #define L2X0_INV_WAY                    0x77C
  44 #define L2X0_CLEAN_LINE_PA              0x7B0
  45 #define L2X0_CLEAN_LINE_IDX             0x7B8
  46 #define L2X0_CLEAN_WAY                  0x7BC
  47 #define L2X0_CLEAN_INV_LINE_PA          0x7F0
  48 #define L2X0_CLEAN_INV_LINE_IDX         0x7F8
  49 #define L2X0_CLEAN_INV_WAY              0x7FC
  50 /*
  51  * The lockdown registers repeat 8 times for L310, the L210 has only one
  52  * D and one I lockdown register at 0x0900 and 0x0904.
  53  */
  54 #define L2X0_LOCKDOWN_WAY_D_BASE        0x900
  55 #define L2X0_LOCKDOWN_WAY_I_BASE        0x904
  56 #define L2X0_LOCKDOWN_STRIDE            0x08
  57 #define L2X0_ADDR_FILTER_START          0xC00
  58 #define L2X0_ADDR_FILTER_END            0xC04
  59 #define L2X0_TEST_OPERATION             0xF00
  60 #define L2X0_LINE_DATA                  0xF10
  61 #define L2X0_LINE_TAG                   0xF30
  62 #define L2X0_DEBUG_CTRL                 0xF40
  63 #define L2X0_PREFETCH_CTRL              0xF60
  64 #define L2X0_POWER_CTRL                 0xF80
  65 #define   L2X0_DYNAMIC_CLK_GATING_EN    (1 << 1)
  66 #define   L2X0_STNDBY_MODE_EN           (1 << 0)
  67
  68 /* Registers shifts and masks */
  69 #define L2X0_CACHE_ID_PART_MASK         (0xf << 6)
  70 #define L2X0_CACHE_ID_PART_L210         (1 << 6)
  71 #define L2X0_CACHE_ID_PART_L310         (3 << 6)
  72 #define L2X0_CACHE_ID_RTL_MASK          0x3f
  73 #define L2X0_CACHE_ID_RTL_R0P0          0x0
  74 #define L2X0_CACHE_ID_RTL_R1P0          0x2
  75 #define L2X0_CACHE_ID_RTL_R2P0          0x4
  76 #define L2X0_CACHE_ID_RTL_R3P0          0x5
  77 #define L2X0_CACHE_ID_RTL_R3P1          0x6
  78 #define L2X0_CACHE_ID_RTL_R3P2          0x8
  79
  80 #define L2X0_AUX_CTRL_MASK                      0xc0000fff
  81 #define L2X0_AUX_CTRL_DATA_RD_LATENCY_SHIFT     0
  82 #define L2X0_AUX_CTRL_DATA_RD_LATENCY_MASK      0x7
  83 #define L2X0_AUX_CTRL_DATA_WR_LATENCY_SHIFT     3
  84 #define L2X0_AUX_CTRL_DATA_WR_LATENCY_MASK      (0x7 << 3)
  85 #define L2X0_AUX_CTRL_TAG_LATENCY_SHIFT         6
  86 #define L2X0_AUX_CTRL_TAG_LATENCY_MASK          (0x7 << 6)
  87 #define L2X0_AUX_CTRL_DIRTY_LATENCY_SHIFT       9
  88 #define L2X0_AUX_CTRL_DIRTY_LATENCY_MASK        (0x7 << 9)
  89 #define L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT       16
  90 #define L2X0_AUX_CTRL_WAY_SIZE_SHIFT            17
  91 #define L2X0_AUX_CTRL_WAY_SIZE_MASK             (0x7 << 17)
  92 #define L2X0_AUX_CTRL_SHARE_OVERRIDE_SHIFT      22
  93 #define L2X0_AUX_CTRL_NS_LOCKDOWN_SHIFT         26
  94 #define L2X0_AUX_CTRL_NS_INT_CTRL_SHIFT         27
  95 #define L2X0_AUX_CTRL_DATA_PREFETCH_SHIFT       28
  96 #define L2X0_AUX_CTRL_INSTR_PREFETCH_SHIFT      29
  97 #define L2X0_AUX_CTRL_EARLY_BRESP_SHIFT         30
  98
  99 #define L2X0_LATENCY_CTRL_SETUP_SHIFT   0
 100 #define L2X0_LATENCY_CTRL_RD_SHIFT      4
 101 #define L2X0_LATENCY_CTRL_WR_SHIFT      8
 102
 103 #define L2X0_ADDR_FILTER_EN             1
 104
 105 #define L2X0_CTRL_EN                    1
 106
 107 #define L2X0_WAY_SIZE_SHIFT             3
 108
 109 #ifndef __ASSEMBLY__
 110 extern void __init l2x0_init(void __iomem *base, u32 aux_val, u32 aux_mask);
 111 #if defined(CONFIG_CACHE_L2X0) && defined(CONFIG_OF)
 112 extern int l2x0_of_init(u32 aux_val, u32 aux_mask);
 113 #else
 114 static inline int l2x0_of_init(u32 aux_val, u32 aux_mask)
 115 {
 116         return -ENODEV;
 117 }
 118 #endif
 119
 120 struct l2x0_regs {
 121         unsigned long phy_base;
 122         unsigned long aux_ctrl;
 123         /*
 124          * Whether the following registers need to be saved/restored
 125          * depends on platform
 126          */
 127         unsigned long tag_latency;
 128         unsigned long data_latency;
 129         unsigned long filter_start;
 130         unsigned long filter_end;
 131         unsigned long prefetch_ctrl;
 132         unsigned long pwr_ctrl;
 133         unsigned long ctrl;
 134 };
 135
 136 extern struct l2x0_regs l2x0_saved_regs;
 137
 138 #endif /* __ASSEMBLY__ */
 139
 140 #endif