PCI: remove deprecated pci_find_slot() interface
[linux-2.6.git] / include / linux / hpet.h
1 #ifndef __HPET__
2 #define __HPET__ 1
3
4 #include <linux/compiler.h>
5
6 #ifdef __KERNEL__
7
8 /*
9  * Offsets into HPET Registers
10  */
11
12 struct hpet {
13         u64 hpet_cap;           /* capabilities */
14         u64 res0;               /* reserved */
15         u64 hpet_config;        /* configuration */
16         u64 res1;               /* reserved */
17         u64 hpet_isr;           /* interrupt status reg */
18         u64 res2[25];           /* reserved */
19         union {                 /* main counter */
20                 u64 _hpet_mc64;
21                 u32 _hpet_mc32;
22                 unsigned long _hpet_mc;
23         } _u0;
24         u64 res3;               /* reserved */
25         struct hpet_timer {
26                 u64 hpet_config;        /* configuration/cap */
27                 union {         /* timer compare register */
28                         u64 _hpet_hc64;
29                         u32 _hpet_hc32;
30                         unsigned long _hpet_compare;
31                 } _u1;
32                 u64 hpet_fsb[2];        /* FSB route */
33         } hpet_timers[1];
34 };
35
36 #define hpet_mc         _u0._hpet_mc
37 #define hpet_compare    _u1._hpet_compare
38
39 #define HPET_MAX_TIMERS (32)
40 #define HPET_MAX_IRQ    (32)
41
42 /*
43  * HPET general capabilities register
44  */
45
46 #define HPET_COUNTER_CLK_PERIOD_MASK    (0xffffffff00000000ULL)
47 #define HPET_COUNTER_CLK_PERIOD_SHIFT   (32UL)
48 #define HPET_VENDOR_ID_MASK             (0x00000000ffff0000ULL)
49 #define HPET_VENDOR_ID_SHIFT            (16ULL)
50 #define HPET_LEG_RT_CAP_MASK            (0x8000)
51 #define HPET_COUNTER_SIZE_MASK          (0x2000)
52 #define HPET_NUM_TIM_CAP_MASK           (0x1f00)
53 #define HPET_NUM_TIM_CAP_SHIFT          (8ULL)
54
55 /*
56  * HPET general configuration register
57  */
58
59 #define HPET_LEG_RT_CNF_MASK            (2UL)
60 #define HPET_ENABLE_CNF_MASK            (1UL)
61
62
63 /*
64  * Timer configuration register
65  */
66
67 #define Tn_INT_ROUTE_CAP_MASK           (0xffffffff00000000ULL)
68 #define Tn_INT_ROUTE_CAP_SHIFT          (32UL)
69 #define Tn_FSB_INT_DELCAP_MASK          (0x8000UL)
70 #define Tn_FSB_INT_DELCAP_SHIFT         (15)
71 #define Tn_FSB_EN_CNF_MASK              (0x4000UL)
72 #define Tn_FSB_EN_CNF_SHIFT             (14)
73 #define Tn_INT_ROUTE_CNF_MASK           (0x3e00UL)
74 #define Tn_INT_ROUTE_CNF_SHIFT          (9)
75 #define Tn_32MODE_CNF_MASK              (0x0100UL)
76 #define Tn_VAL_SET_CNF_MASK             (0x0040UL)
77 #define Tn_SIZE_CAP_MASK                (0x0020UL)
78 #define Tn_PER_INT_CAP_MASK             (0x0010UL)
79 #define Tn_TYPE_CNF_MASK                (0x0008UL)
80 #define Tn_INT_ENB_CNF_MASK             (0x0004UL)
81 #define Tn_INT_TYPE_CNF_MASK            (0x0002UL)
82
83 /*
84  * Timer FSB Interrupt Route Register
85  */
86
87 #define Tn_FSB_INT_ADDR_MASK            (0xffffffff00000000ULL)
88 #define Tn_FSB_INT_ADDR_SHIFT           (32UL)
89 #define Tn_FSB_INT_VAL_MASK             (0x00000000ffffffffULL)
90
91 /*
92  * exported interfaces
93  */
94
95 struct hpet_data {
96         unsigned long hd_phys_address;
97         void __iomem *hd_address;
98         unsigned short hd_nirqs;
99         unsigned int hd_state;  /* timer allocated */
100         unsigned int hd_irq[HPET_MAX_TIMERS];
101 };
102
103 static inline void hpet_reserve_timer(struct hpet_data *hd, int timer)
104 {
105         hd->hd_state |= (1 << timer);
106         return;
107 }
108
109 int hpet_alloc(struct hpet_data *);
110
111 #endif /* __KERNEL__ */
112
113 struct hpet_info {
114         unsigned long hi_ireqfreq;      /* Hz */
115         unsigned long hi_flags; /* information */
116         unsigned short hi_hpet;
117         unsigned short hi_timer;
118 };
119
120 #define HPET_INFO_PERIODIC      0x0010  /* periodic-capable comparator */
121
122 #define HPET_IE_ON      _IO('h', 0x01)  /* interrupt on */
123 #define HPET_IE_OFF     _IO('h', 0x02)  /* interrupt off */
124 #define HPET_INFO       _IOR('h', 0x03, struct hpet_info)
125 #define HPET_EPI        _IO('h', 0x04)  /* enable periodic */
126 #define HPET_DPI        _IO('h', 0x05)  /* disable periodic */
127 #define HPET_IRQFREQ    _IOW('h', 0x6, unsigned long)   /* IRQFREQ usec */
128
129 #endif                          /* !__HPET__ */