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1965aae3 PA |
1 | #ifndef _ASM_X86_HPET_H |
2 | #define _ASM_X86_HPET_H | |
b8ce3359 | 3 | |
58ac1e76 | 4 | #include <linux/msi.h> |
5 | ||
b8ce3359 TG |
6 | #ifdef CONFIG_HPET_TIMER |
7 | ||
b8ce3359 TG |
8 | #define HPET_MMAP_SIZE 1024 |
9 | ||
10 | #define HPET_ID 0x000 | |
11 | #define HPET_PERIOD 0x004 | |
12 | #define HPET_CFG 0x010 | |
13 | #define HPET_STATUS 0x020 | |
14 | #define HPET_COUNTER 0x0f0 | |
58ac1e76 | 15 | |
16 | #define HPET_Tn_CFG(n) (0x100 + 0x20 * n) | |
17 | #define HPET_Tn_CMP(n) (0x108 + 0x20 * n) | |
18 | #define HPET_Tn_ROUTE(n) (0x110 + 0x20 * n) | |
19 | ||
b8ce3359 TG |
20 | #define HPET_T0_CFG 0x100 |
21 | #define HPET_T0_CMP 0x108 | |
22 | #define HPET_T0_ROUTE 0x110 | |
23 | #define HPET_T1_CFG 0x120 | |
24 | #define HPET_T1_CMP 0x128 | |
25 | #define HPET_T1_ROUTE 0x130 | |
26 | #define HPET_T2_CFG 0x140 | |
27 | #define HPET_T2_CMP 0x148 | |
28 | #define HPET_T2_ROUTE 0x150 | |
29 | ||
30 | #define HPET_ID_REV 0x000000ff | |
31 | #define HPET_ID_NUMBER 0x00001f00 | |
32 | #define HPET_ID_64BIT 0x00002000 | |
33 | #define HPET_ID_LEGSUP 0x00008000 | |
34 | #define HPET_ID_VENDOR 0xffff0000 | |
35 | #define HPET_ID_NUMBER_SHIFT 8 | |
36 | #define HPET_ID_VENDOR_SHIFT 16 | |
37 | ||
38 | #define HPET_ID_VENDOR_8086 0x8086 | |
39 | ||
40 | #define HPET_CFG_ENABLE 0x001 | |
41 | #define HPET_CFG_LEGACY 0x002 | |
42 | #define HPET_LEGACY_8254 2 | |
43 | #define HPET_LEGACY_RTC 8 | |
44 | ||
45 | #define HPET_TN_LEVEL 0x0002 | |
46 | #define HPET_TN_ENABLE 0x0004 | |
47 | #define HPET_TN_PERIODIC 0x0008 | |
48 | #define HPET_TN_PERIODIC_CAP 0x0010 | |
49 | #define HPET_TN_64BIT_CAP 0x0020 | |
50 | #define HPET_TN_SETVAL 0x0040 | |
51 | #define HPET_TN_32BIT 0x0100 | |
52 | #define HPET_TN_ROUTE 0x3e00 | |
53 | #define HPET_TN_FSB 0x4000 | |
54 | #define HPET_TN_FSB_CAP 0x8000 | |
55 | #define HPET_TN_ROUTE_SHIFT 9 | |
56 | ||
57 | /* Max HPET Period is 10^8 femto sec as in HPET spec */ | |
58 | #define HPET_MAX_PERIOD 100000000UL | |
59 | /* | |
60 | * Min HPET period is 10^5 femto sec just for safety. If it is less than this, | |
61 | * then 32 bit HPET counter wrapsaround in less than 0.5 sec. | |
62 | */ | |
63 | #define HPET_MIN_PERIOD 100000UL | |
64 | ||
65 | /* hpet memory map physical address */ | |
66 | extern unsigned long hpet_address; | |
59c69f2a | 67 | extern unsigned long force_hpet_address; |
c8bc6f3c | 68 | extern u8 hpet_blockid; |
b17530bd | 69 | extern int hpet_force_user; |
73472a46 | 70 | extern u8 hpet_msi_disable; |
b8ce3359 TG |
71 | extern int is_hpet_enabled(void); |
72 | extern int hpet_enable(void); | |
c86c7fbc | 73 | extern void hpet_disable(void); |
5946fa3d | 74 | extern unsigned int hpet_readl(unsigned int a); |
bfe0c1cc | 75 | extern void force_hpet_resume(void); |
b8ce3359 | 76 | |
58ac1e76 | 77 | extern void hpet_msi_unmask(unsigned int irq); |
78 | extern void hpet_msi_mask(unsigned int irq); | |
79 | extern void hpet_msi_write(unsigned int irq, struct msi_msg *msg); | |
80 | extern void hpet_msi_read(unsigned int irq, struct msi_msg *msg); | |
81 | ||
82 | #ifdef CONFIG_PCI_MSI | |
c8bc6f3c | 83 | extern int arch_setup_hpet_msi(unsigned int irq, unsigned int id); |
58ac1e76 | 84 | #else |
c8bc6f3c | 85 | static inline int arch_setup_hpet_msi(unsigned int irq, unsigned int id) |
58ac1e76 | 86 | { |
87 | return -EINVAL; | |
88 | } | |
89 | #endif | |
90 | ||
b8ce3359 TG |
91 | #ifdef CONFIG_HPET_EMULATE_RTC |
92 | ||
93 | #include <linux/interrupt.h> | |
94 | ||
1bdbdaac | 95 | typedef irqreturn_t (*rtc_irq_handler)(int interrupt, void *cookie); |
b8ce3359 TG |
96 | extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask); |
97 | extern int hpet_set_rtc_irq_bit(unsigned long bit_mask); | |
98 | extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, | |
99 | unsigned char sec); | |
100 | extern int hpet_set_periodic_freq(unsigned long freq); | |
101 | extern int hpet_rtc_dropped_irq(void); | |
102 | extern int hpet_rtc_timer_init(void); | |
103 | extern irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id); | |
1bdbdaac BW |
104 | extern int hpet_register_irq_handler(rtc_irq_handler handler); |
105 | extern void hpet_unregister_irq_handler(rtc_irq_handler handler); | |
b8ce3359 TG |
106 | |
107 | #endif /* CONFIG_HPET_EMULATE_RTC */ | |
108 | ||
df619e6b | 109 | #else /* CONFIG_HPET_TIMER */ |
b8ce3359 TG |
110 | |
111 | static inline int hpet_enable(void) { return 0; } | |
df619e6b | 112 | static inline int is_hpet_enabled(void) { return 0; } |
bfc0f594 | 113 | #define hpet_readl(a) 0 |
b8ce3359 | 114 | |
df619e6b | 115 | #endif |
1965aae3 | 116 | #endif /* _ASM_X86_HPET_H */ |