tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#define L2X0_EVENT_CNT_CTRL_ENABLE BIT(0)
91
92#define L2X0_EVENT_CNT_CFG_SRC_SHIFT 2
93#define L2X0_EVENT_CNT_CFG_SRC_MASK 0xf
94#define L2X0_EVENT_CNT_CFG_SRC_DISABLED 0
95#define L2X0_EVENT_CNT_CFG_INT_DISABLED 0
96#define L2X0_EVENT_CNT_CFG_INT_INCR 1
97#define L2X0_EVENT_CNT_CFG_INT_OVERFLOW 2
98
99/* L2C auxiliary control register - bits common to L2C-210/220/310 */
100#define L2C_AUX_CTRL_WAY_SIZE_SHIFT 17
101#define L2C_AUX_CTRL_WAY_SIZE_MASK (7 << 17)
102#define L2C_AUX_CTRL_WAY_SIZE(n) ((n) << 17)
103#define L2C_AUX_CTRL_EVTMON_ENABLE BIT(20)
104#define L2C_AUX_CTRL_PARITY_ENABLE BIT(21)
105#define L2C_AUX_CTRL_SHARED_OVERRIDE BIT(22)
106/* L2C-210/220 common bits */
107#define L2X0_AUX_CTRL_DATA_RD_LATENCY_SHIFT 0
108#define L2X0_AUX_CTRL_DATA_RD_LATENCY_MASK (7 << 0)
109#define L2X0_AUX_CTRL_DATA_WR_LATENCY_SHIFT 3
110#define L2X0_AUX_CTRL_DATA_WR_LATENCY_MASK (7 << 3)
111#define L2X0_AUX_CTRL_TAG_LATENCY_SHIFT 6
112#define L2X0_AUX_CTRL_TAG_LATENCY_MASK (7 << 6)
113#define L2X0_AUX_CTRL_DIRTY_LATENCY_SHIFT 9
114#define L2X0_AUX_CTRL_DIRTY_LATENCY_MASK (7 << 9)
115#define L2X0_AUX_CTRL_ASSOC_SHIFT 13
116#define L2X0_AUX_CTRL_ASSOC_MASK (15 << 13)
117/* L2C-210 specific bits */
118#define L210_AUX_CTRL_WRAP_DISABLE BIT(12)
119#define L210_AUX_CTRL_WA_OVERRIDE BIT(23)
120#define L210_AUX_CTRL_EXCLUSIVE_ABORT BIT(24)
121/* L2C-220 specific bits */
122#define L220_AUX_CTRL_EXCLUSIVE_CACHE BIT(12)
123#define L220_AUX_CTRL_FWA_SHIFT 23
124#define L220_AUX_CTRL_FWA_MASK (3 << 23)
125#define L220_AUX_CTRL_NS_LOCKDOWN BIT(26)
126#define L220_AUX_CTRL_NS_INT_CTRL BIT(27)
127/* L2C-310 specific bits */
128#define L310_AUX_CTRL_FULL_LINE_ZERO BIT(0) /* R2P0+ */
129#define L310_AUX_CTRL_HIGHPRIO_SO_DEV BIT(10) /* R2P0+ */
130#define L310_AUX_CTRL_STORE_LIMITATION BIT(11) /* R2P0+ */
131#define L310_AUX_CTRL_EXCLUSIVE_CACHE BIT(12)
132#define L310_AUX_CTRL_ASSOCIATIVITY_16 BIT(16)
133#define L310_AUX_CTRL_CACHE_REPLACE_RR BIT(25) /* R2P0+ */
134#define L310_AUX_CTRL_NS_LOCKDOWN BIT(26)
135#define L310_AUX_CTRL_NS_INT_CTRL BIT(27)
136#define L310_AUX_CTRL_DATA_PREFETCH BIT(28)
137#define L310_AUX_CTRL_INSTR_PREFETCH BIT(29)
138#define L310_AUX_CTRL_EARLY_BRESP BIT(30) /* R2P0+ */
139
140#define L310_LATENCY_CTRL_SETUP(n) ((n) << 0)
141#define L310_LATENCY_CTRL_RD(n) ((n) << 4)
142#define L310_LATENCY_CTRL_WR(n) ((n) << 8)
143
144#define L310_ADDR_FILTER_EN 1
145
146#define L310_PREFETCH_CTRL_OFFSET_MASK 0x1f
147#define L310_PREFETCH_CTRL_DBL_LINEFILL_INCR BIT(23)
148#define L310_PREFETCH_CTRL_PREFETCH_DROP BIT(24)
149#define L310_PREFETCH_CTRL_DBL_LINEFILL_WRAP BIT(27)
150#define L310_PREFETCH_CTRL_DATA_PREFETCH BIT(28)
151#define L310_PREFETCH_CTRL_INSTR_PREFETCH BIT(29)
152#define L310_PREFETCH_CTRL_DBL_LINEFILL BIT(30)
153
154#define L2X0_CTRL_EN 1
155
156#define L2X0_WAY_SIZE_SHIFT 3
157
158#ifndef __ASSEMBLY__
159extern void __init l2x0_init(void __iomem *base, u32 aux_val, u32 aux_mask);
160#if defined(CONFIG_CACHE_L2X0) && defined(CONFIG_OF)
161extern int l2x0_of_init(u32 aux_val, u32 aux_mask);
162#else
163static inline int l2x0_of_init(u32 aux_val, u32 aux_mask)
164{
165 return -ENODEV;
166}
167#endif
168
169#ifdef CONFIG_CACHE_L2X0_PMU
170void l2x0_pmu_register(void __iomem *base, u32 part);
171void l2x0_pmu_suspend(void);
172void l2x0_pmu_resume(void);
173#else
174static inline void l2x0_pmu_register(void __iomem *base, u32 part) {}
175static inline void l2x0_pmu_suspend(void) {}
176static inline void l2x0_pmu_resume(void) {}
177#endif
178
179struct l2x0_regs {
180 unsigned long phy_base;
181 unsigned long aux_ctrl;
182 /*
183 * Whether the following registers need to be saved/restored
184 * depends on platform
185 */
186 unsigned long tag_latency;
187 unsigned long data_latency;
188 unsigned long filter_start;
189 unsigned long filter_end;
190 unsigned long prefetch_ctrl;
191 unsigned long pwr_ctrl;
192 unsigned long ctrl;
193 unsigned long aux2_ctrl;
194};
195
196extern struct l2x0_regs l2x0_saved_regs;
197
198#endif /* __ASSEMBLY__ */
199
200#endif