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8a4da6e3 MR |
1 | /* |
2 | * Copyright (C) 2012 ARM Ltd. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
15 | */ | |
16 | #ifndef __CLKSOURCE_ARM_ARCH_TIMER_H | |
17 | #define __CLKSOURCE_ARM_ARCH_TIMER_H | |
18 | ||
19 | #include <linux/clocksource.h> | |
20 | #include <linux/types.h> | |
21 | ||
22 | #define ARCH_TIMER_CTRL_ENABLE (1 << 0) | |
23 | #define ARCH_TIMER_CTRL_IT_MASK (1 << 1) | |
24 | #define ARCH_TIMER_CTRL_IT_STAT (1 << 2) | |
25 | ||
e09f3cc0 SB |
26 | enum arch_timer_reg { |
27 | ARCH_TIMER_REG_CTRL, | |
28 | ARCH_TIMER_REG_TVAL, | |
29 | }; | |
8a4da6e3 MR |
30 | |
31 | #define ARCH_TIMER_PHYS_ACCESS 0 | |
32 | #define ARCH_TIMER_VIRT_ACCESS 1 | |
22006994 SB |
33 | #define ARCH_TIMER_MEM_PHYS_ACCESS 2 |
34 | #define ARCH_TIMER_MEM_VIRT_ACCESS 3 | |
8a4da6e3 | 35 | |
28061758 SK |
36 | #define ARCH_TIMER_USR_PCT_ACCESS_EN (1 << 0) /* physical counter */ |
37 | #define ARCH_TIMER_USR_VCT_ACCESS_EN (1 << 1) /* virtual counter */ | |
38 | #define ARCH_TIMER_VIRT_EVT_EN (1 << 2) | |
39 | #define ARCH_TIMER_EVT_TRIGGER_SHIFT (4) | |
40 | #define ARCH_TIMER_EVT_TRIGGER_MASK (0xF << ARCH_TIMER_EVT_TRIGGER_SHIFT) | |
41 | #define ARCH_TIMER_USR_VT_ACCESS_EN (1 << 8) /* virtual timer registers */ | |
42 | #define ARCH_TIMER_USR_PT_ACCESS_EN (1 << 9) /* physical timer registers */ | |
43 | ||
037f6377 WD |
44 | #define ARCH_TIMER_EVT_STREAM_FREQ 10000 /* 100us */ |
45 | ||
8a4da6e3 MR |
46 | #ifdef CONFIG_ARM_ARCH_TIMER |
47 | ||
8a4da6e3 | 48 | extern u32 arch_timer_get_rate(void); |
22006994 | 49 | extern u64 (*arch_timer_read_counter)(void); |
8a4da6e3 MR |
50 | extern struct timecounter *arch_timer_get_timecounter(void); |
51 | ||
52 | #else | |
53 | ||
8a4da6e3 MR |
54 | static inline u32 arch_timer_get_rate(void) |
55 | { | |
56 | return 0; | |
57 | } | |
58 | ||
59 | static inline u64 arch_timer_read_counter(void) | |
60 | { | |
61 | return 0; | |
62 | } | |
63 | ||
0582b053 | 64 | static inline struct timecounter *arch_timer_get_timecounter(void) |
8a4da6e3 MR |
65 | { |
66 | return NULL; | |
67 | } | |
68 | ||
69 | #endif | |
70 | ||
71 | #endif |