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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
e292ccde HC |
2 | #ifndef _ASM_HPET_H |
3 | #define _ASM_HPET_H | |
4 | ||
5 | #ifdef CONFIG_RS780_HPET | |
6 | ||
7 | #define HPET_MMAP_SIZE 1024 | |
8 | ||
9 | #define HPET_ID 0x000 | |
10 | #define HPET_PERIOD 0x004 | |
11 | #define HPET_CFG 0x010 | |
12 | #define HPET_STATUS 0x020 | |
13 | #define HPET_COUNTER 0x0f0 | |
14 | ||
15 | #define HPET_Tn_CFG(n) (0x100 + 0x20 * n) | |
16 | #define HPET_Tn_CMP(n) (0x108 + 0x20 * n) | |
17 | #define HPET_Tn_ROUTE(n) (0x110 + 0x20 * n) | |
18 | ||
19 | #define HPET_T0_IRS 0x001 | |
20 | #define HPET_T1_IRS 0x002 | |
21 | #define HPET_T3_IRS 0x004 | |
22 | ||
23 | #define HPET_T0_CFG 0x100 | |
24 | #define HPET_T0_CMP 0x108 | |
25 | #define HPET_T0_ROUTE 0x110 | |
26 | #define HPET_T1_CFG 0x120 | |
27 | #define HPET_T1_CMP 0x128 | |
28 | #define HPET_T1_ROUTE 0x130 | |
29 | #define HPET_T2_CFG 0x140 | |
30 | #define HPET_T2_CMP 0x148 | |
31 | #define HPET_T2_ROUTE 0x150 | |
32 | ||
33 | #define HPET_ID_REV 0x000000ff | |
34 | #define HPET_ID_NUMBER 0x00001f00 | |
35 | #define HPET_ID_64BIT 0x00002000 | |
36 | #define HPET_ID_LEGSUP 0x00008000 | |
37 | #define HPET_ID_VENDOR 0xffff0000 | |
38 | #define HPET_ID_NUMBER_SHIFT 8 | |
39 | #define HPET_ID_VENDOR_SHIFT 16 | |
40 | ||
41 | #define HPET_CFG_ENABLE 0x001 | |
42 | #define HPET_CFG_LEGACY 0x002 | |
43 | #define HPET_LEGACY_8254 2 | |
44 | #define HPET_LEGACY_RTC 8 | |
45 | ||
46 | #define HPET_TN_LEVEL 0x0002 | |
47 | #define HPET_TN_ENABLE 0x0004 | |
48 | #define HPET_TN_PERIODIC 0x0008 | |
49 | #define HPET_TN_PERIODIC_CAP 0x0010 | |
50 | #define HPET_TN_64BIT_CAP 0x0020 | |
51 | #define HPET_TN_SETVAL 0x0040 | |
52 | #define HPET_TN_32BIT 0x0100 | |
53 | #define HPET_TN_ROUTE 0x3e00 | |
54 | #define HPET_TN_FSB 0x4000 | |
55 | #define HPET_TN_FSB_CAP 0x8000 | |
56 | #define HPET_TN_ROUTE_SHIFT 9 | |
57 | ||
58 | /* Max HPET Period is 10^8 femto sec as in HPET spec */ | |
59 | #define HPET_MAX_PERIOD 100000000UL | |
60 | /* | |
61 | * Min HPET period is 10^5 femto sec just for safety. If it is less than this, | |
62 | * then 32 bit HPET counter wrapsaround in less than 0.5 sec. | |
63 | */ | |
64 | #define HPET_MIN_PERIOD 100000UL | |
65 | ||
66 | #define HPET_ADDR 0x20000 | |
67 | #define HPET_MMIO_ADDR 0x90000e0000020000 | |
68 | #define HPET_FREQ 14318780 | |
69 | #define HPET_COMPARE_VAL ((HPET_FREQ + HZ / 2) / HZ) | |
70 | #define HPET_T0_IRQ 0 | |
71 | ||
72 | extern void __init setup_hpet_timer(void); | |
73 | #endif /* CONFIG_RS780_HPET */ | |
74 | #endif /* _ASM_HPET_H */ |