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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 | ||
831610c0 | 19 | #include <linux/bitops.h> |
74d23cc7 | 20 | #include <linux/timecounter.h> |
8a4da6e3 MR |
21 | #include <linux/types.h> |
22 | ||
831610c0 FW |
23 | #define ARCH_TIMER_TYPE_CP15 BIT(0) |
24 | #define ARCH_TIMER_TYPE_MEM BIT(1) | |
25 | ||
8a4da6e3 MR |
26 | #define ARCH_TIMER_CTRL_ENABLE (1 << 0) |
27 | #define ARCH_TIMER_CTRL_IT_MASK (1 << 1) | |
28 | #define ARCH_TIMER_CTRL_IT_STAT (1 << 2) | |
29 | ||
1431af36 MZ |
30 | #define CNTHCTL_EL1PCTEN (1 << 0) |
31 | #define CNTHCTL_EL1PCEN (1 << 1) | |
32 | #define CNTHCTL_EVNTEN (1 << 2) | |
33 | #define CNTHCTL_EVNTDIR (1 << 3) | |
34 | #define CNTHCTL_EVNTI (0xF << 4) | |
35 | ||
e09f3cc0 SB |
36 | enum arch_timer_reg { |
37 | ARCH_TIMER_REG_CTRL, | |
38 | ARCH_TIMER_REG_TVAL, | |
39 | }; | |
8a4da6e3 | 40 | |
831610c0 FW |
41 | enum arch_timer_ppi_nr { |
42 | ARCH_TIMER_PHYS_SECURE_PPI, | |
43 | ARCH_TIMER_PHYS_NONSECURE_PPI, | |
44 | ARCH_TIMER_VIRT_PPI, | |
45 | ARCH_TIMER_HYP_PPI, | |
46 | ARCH_TIMER_MAX_TIMER_PPI | |
47 | }; | |
48 | ||
097cd143 FW |
49 | enum arch_timer_spi_nr { |
50 | ARCH_TIMER_PHYS_SPI, | |
51 | ARCH_TIMER_VIRT_SPI, | |
52 | ARCH_TIMER_MAX_TIMER_SPI | |
53 | }; | |
54 | ||
8a4da6e3 MR |
55 | #define ARCH_TIMER_PHYS_ACCESS 0 |
56 | #define ARCH_TIMER_VIRT_ACCESS 1 | |
22006994 SB |
57 | #define ARCH_TIMER_MEM_PHYS_ACCESS 2 |
58 | #define ARCH_TIMER_MEM_VIRT_ACCESS 3 | |
8a4da6e3 | 59 | |
b3251b8f FW |
60 | #define ARCH_TIMER_MEM_MAX_FRAMES 8 |
61 | ||
28061758 SH |
62 | #define ARCH_TIMER_USR_PCT_ACCESS_EN (1 << 0) /* physical counter */ |
63 | #define ARCH_TIMER_USR_VCT_ACCESS_EN (1 << 1) /* virtual counter */ | |
64 | #define ARCH_TIMER_VIRT_EVT_EN (1 << 2) | |
65 | #define ARCH_TIMER_EVT_TRIGGER_SHIFT (4) | |
66 | #define ARCH_TIMER_EVT_TRIGGER_MASK (0xF << ARCH_TIMER_EVT_TRIGGER_SHIFT) | |
67 | #define ARCH_TIMER_USR_VT_ACCESS_EN (1 << 8) /* virtual timer registers */ | |
68 | #define ARCH_TIMER_USR_PT_ACCESS_EN (1 << 9) /* physical timer registers */ | |
69 | ||
7b77452e JT |
70 | #define ARCH_TIMER_EVT_STREAM_PERIOD_US 100 |
71 | #define ARCH_TIMER_EVT_STREAM_FREQ \ | |
72 | (USEC_PER_SEC / ARCH_TIMER_EVT_STREAM_PERIOD_US) | |
037f6377 | 73 | |
b4d6ce97 JG |
74 | struct arch_timer_kvm_info { |
75 | struct timecounter timecounter; | |
d9b5e415 | 76 | int virtual_irq; |
b4d6ce97 JG |
77 | }; |
78 | ||
b3251b8f FW |
79 | struct arch_timer_mem_frame { |
80 | bool valid; | |
81 | phys_addr_t cntbase; | |
82 | size_t size; | |
83 | int phys_irq; | |
84 | int virt_irq; | |
85 | }; | |
86 | ||
87 | struct arch_timer_mem { | |
88 | phys_addr_t cntctlbase; | |
89 | size_t size; | |
90 | struct arch_timer_mem_frame frame[ARCH_TIMER_MEM_MAX_FRAMES]; | |
91 | }; | |
92 | ||
8a4da6e3 MR |
93 | #ifdef CONFIG_ARM_ARCH_TIMER |
94 | ||
8a4da6e3 | 95 | extern u32 arch_timer_get_rate(void); |
22006994 | 96 | extern u64 (*arch_timer_read_counter)(void); |
b4d6ce97 | 97 | extern struct arch_timer_kvm_info *arch_timer_get_kvm_info(void); |
ec5c8e42 | 98 | extern bool arch_timer_evtstrm_available(void); |
8a4da6e3 MR |
99 | |
100 | #else | |
101 | ||
8a4da6e3 MR |
102 | static inline u32 arch_timer_get_rate(void) |
103 | { | |
104 | return 0; | |
105 | } | |
106 | ||
107 | static inline u64 arch_timer_read_counter(void) | |
108 | { | |
109 | return 0; | |
110 | } | |
111 | ||
ec5c8e42 JT |
112 | static inline bool arch_timer_evtstrm_available(void) |
113 | { | |
114 | return false; | |
115 | } | |
116 | ||
8a4da6e3 MR |
117 | #endif |
118 | ||
119 | #endif |