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MIPS: Loongson-3: Add RS780/SBX00 HPET support
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1 #ifndef _ASM_HPET_H
2 #define _ASM_HPET_H
3
4 #ifdef CONFIG_RS780_HPET
5
6 #define HPET_MMAP_SIZE 1024
7
8 #define HPET_ID 0x000
9 #define HPET_PERIOD 0x004
10 #define HPET_CFG 0x010
11 #define HPET_STATUS 0x020
12 #define HPET_COUNTER 0x0f0
13
14 #define HPET_Tn_CFG(n) (0x100 + 0x20 * n)
15 #define HPET_Tn_CMP(n) (0x108 + 0x20 * n)
16 #define HPET_Tn_ROUTE(n) (0x110 + 0x20 * n)
17
18 #define HPET_T0_IRS 0x001
19 #define HPET_T1_IRS 0x002
20 #define HPET_T3_IRS 0x004
21
22 #define HPET_T0_CFG 0x100
23 #define HPET_T0_CMP 0x108
24 #define HPET_T0_ROUTE 0x110
25 #define HPET_T1_CFG 0x120
26 #define HPET_T1_CMP 0x128
27 #define HPET_T1_ROUTE 0x130
28 #define HPET_T2_CFG 0x140
29 #define HPET_T2_CMP 0x148
30 #define HPET_T2_ROUTE 0x150
31
32 #define HPET_ID_REV 0x000000ff
33 #define HPET_ID_NUMBER 0x00001f00
34 #define HPET_ID_64BIT 0x00002000
35 #define HPET_ID_LEGSUP 0x00008000
36 #define HPET_ID_VENDOR 0xffff0000
37 #define HPET_ID_NUMBER_SHIFT 8
38 #define HPET_ID_VENDOR_SHIFT 16
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 #define HPET_ADDR 0x20000
66 #define HPET_MMIO_ADDR 0x90000e0000020000
67 #define HPET_FREQ 14318780
68 #define HPET_COMPARE_VAL ((HPET_FREQ + HZ / 2) / HZ)
69 #define HPET_T0_IRQ 0
70
71 extern void __init setup_hpet_timer(void);
72 #endif /* CONFIG_RS780_HPET */
73 #endif /* _ASM_HPET_H */