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 L310_TAG_LATENCY_CTRL           0x108
  30 #define L310_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 L310_ADDR_FILTER_START          0xC00
  58 #define L310_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 L310_PREFETCH_CTRL              0xF60
  64 #define L310_POWER_CTRL                 0xF80
  65 #define   L310_DYNAMIC_CLK_GATING_EN    (1 << 1)
  66 #define   L310_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_L220         (2 << 6)
  72 #define L2X0_CACHE_ID_PART_L310         (3 << 6)
  73 #define L2X0_CACHE_ID_RTL_MASK          0x3f
  74 #define L210_CACHE_ID_RTL_R0P2_02       0x00
  75 #define L210_CACHE_ID_RTL_R0P1          0x01
  76 #define L210_CACHE_ID_RTL_R0P2_01       0x02
  77 #define L210_CACHE_ID_RTL_R0P3          0x03
  78 #define L210_CACHE_ID_RTL_R0P4          0x0b
  79 #define L210_CACHE_ID_RTL_R0P5          0x0f
  80 #define L220_CACHE_ID_RTL_R1P7_01REL0   0x06
  81 #define L310_CACHE_ID_RTL_R0P0          0x00
  82 #define L310_CACHE_ID_RTL_R1P0          0x02
  83 #define L310_CACHE_ID_RTL_R2P0          0x04
  84 #define L310_CACHE_ID_RTL_R3P0          0x05
  85 #define L310_CACHE_ID_RTL_R3P1          0x06
  86 #define L310_CACHE_ID_RTL_R3P1_50REL0   0x07
  87 #define L310_CACHE_ID_RTL_R3P2          0x08
  88 #define L310_CACHE_ID_RTL_R3P3          0x09
  89
  90 /* L2C auxiliary control register - bits common to L2C-210/220/310 */
  91 #define L2C_AUX_CTRL_WAY_SIZE_SHIFT             17
  92 #define L2C_AUX_CTRL_WAY_SIZE_MASK              (7 << 17)
  93 #define L2C_AUX_CTRL_WAY_SIZE(n)                ((n) << 17)
  94 #define L2C_AUX_CTRL_EVTMON_ENABLE              BIT(20)
  95 #define L2C_AUX_CTRL_PARITY_ENABLE              BIT(21)
  96 #define L2C_AUX_CTRL_SHARED_OVERRIDE            BIT(22)
  97 /* L2C-210/220 common bits */
  98 #define L2X0_AUX_CTRL_DATA_RD_LATENCY_SHIFT     0
  99 #define L2X0_AUX_CTRL_DATA_RD_LATENCY_MASK      (7 << 0)
 100 #define L2X0_AUX_CTRL_DATA_WR_LATENCY_SHIFT     3
 101 #define L2X0_AUX_CTRL_DATA_WR_LATENCY_MASK      (7 << 3)
 102 #define L2X0_AUX_CTRL_TAG_LATENCY_SHIFT         6
 103 #define L2X0_AUX_CTRL_TAG_LATENCY_MASK          (7 << 6)
 104 #define L2X0_AUX_CTRL_DIRTY_LATENCY_SHIFT       9
 105 #define L2X0_AUX_CTRL_DIRTY_LATENCY_MASK        (7 << 9)
 106 #define L2X0_AUX_CTRL_ASSOC_SHIFT               13
 107 #define L2X0_AUX_CTRL_ASSOC_MASK                (15 << 13)
 108 /* L2C-210 specific bits */
 109 #define L210_AUX_CTRL_WRAP_DISABLE              BIT(12)
 110 #define L210_AUX_CTRL_WA_OVERRIDE               BIT(23)
 111 #define L210_AUX_CTRL_EXCLUSIVE_ABORT           BIT(24)
 112 /* L2C-220 specific bits */
 113 #define L220_AUX_CTRL_EXCLUSIVE_CACHE           BIT(12)
 114 #define L220_AUX_CTRL_FWA_SHIFT                 23
 115 #define L220_AUX_CTRL_FWA_MASK                  (3 << 23)
 116 #define L220_AUX_CTRL_NS_LOCKDOWN               BIT(26)
 117 #define L220_AUX_CTRL_NS_INT_CTRL               BIT(27)
 118 /* L2C-310 specific bits */
 119 #define L310_AUX_CTRL_FULL_LINE_ZERO            BIT(0)  /* R2P0+ */
 120 #define L310_AUX_CTRL_HIGHPRIO_SO_DEV           BIT(10) /* R2P0+ */
 121 #define L310_AUX_CTRL_STORE_LIMITATION          BIT(11) /* R2P0+ */
 122 #define L310_AUX_CTRL_EXCLUSIVE_CACHE           BIT(12)
 123 #define L310_AUX_CTRL_ASSOCIATIVITY_16          BIT(16)
 124 #define L310_AUX_CTRL_CACHE_REPLACE_RR          BIT(25) /* R2P0+ */
 125 #define L310_AUX_CTRL_NS_LOCKDOWN               BIT(26)
 126 #define L310_AUX_CTRL_NS_INT_CTRL               BIT(27)
 127 #define L310_AUX_CTRL_DATA_PREFETCH             BIT(28)
 128 #define L310_AUX_CTRL_INSTR_PREFETCH            BIT(29)
 129 #define L310_AUX_CTRL_EARLY_BRESP               BIT(30) /* R2P0+ */
 130
 131 #define L310_LATENCY_CTRL_SETUP(n)              ((n) << 0)
 132 #define L310_LATENCY_CTRL_RD(n)                 ((n) << 4)
 133 #define L310_LATENCY_CTRL_WR(n)                 ((n) << 8)
 134
 135 #define L310_ADDR_FILTER_EN             1
 136
 137 #define L310_PREFETCH_CTRL_OFFSET_MASK          0x1f
 138 #define L310_PREFETCH_CTRL_DBL_LINEFILL_INCR    BIT(23)
 139 #define L310_PREFETCH_CTRL_PREFETCH_DROP        BIT(24)
 140 #define L310_PREFETCH_CTRL_DBL_LINEFILL_WRAP    BIT(27)
 141 #define L310_PREFETCH_CTRL_DATA_PREFETCH        BIT(28)
 142 #define L310_PREFETCH_CTRL_INSTR_PREFETCH       BIT(29)
 143 #define L310_PREFETCH_CTRL_DBL_LINEFILL         BIT(30)
 144
 145 #define L2X0_CTRL_EN                    1
 146
 147 #define L2X0_WAY_SIZE_SHIFT             3
 148
 149 #ifndef __ASSEMBLY__
 150 extern void __init l2x0_init(void __iomem *base, u32 aux_val, u32 aux_mask);
 151 #if defined(CONFIG_CACHE_L2X0) && defined(CONFIG_OF)
 152 extern int l2x0_of_init(u32 aux_val, u32 aux_mask);
 153 #else
 154 static inline int l2x0_of_init(u32 aux_val, u32 aux_mask)
 155 {
 156         return -ENODEV;
 157 }
 158 #endif
 159
 160 struct l2x0_regs {
 161         unsigned long phy_base;
 162         unsigned long aux_ctrl;
 163         /*
 164          * Whether the following registers need to be saved/restored
 165          * depends on platform
 166          */
 167         unsigned long tag_latency;
 168         unsigned long data_latency;
 169         unsigned long filter_start;
 170         unsigned long filter_end;
 171         unsigned long prefetch_ctrl;
 172         unsigned long pwr_ctrl;
 173         unsigned long ctrl;
 174         unsigned long aux2_ctrl;
 175 };
 176
 177 extern struct l2x0_regs l2x0_saved_regs;
 178
 179 #endif /* __ASSEMBLY__ */
 180
 181 #endif