1/* SPDX-License-Identifier: GPL-2.0 */
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
72extern void __init setup_hpet_timer(void);
73#endif /* CONFIG_RS780_HPET */
74#endif /* _ASM_HPET_H */
75