Update version for v6.2.0-rc3 release
[qemu.git] / include / hw / timer / hpet.h
1 /*
2 * QEMU Emulated HPET support
3 *
4 * Copyright IBM, Corp. 2008
5 *
6 * Authors:
7 * Beth Kon <bkon@us.ibm.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
11 *
12 */
13
14 #ifndef HW_HPET_H
15 #define HW_HPET_H
16
17 #include "qom/object.h"
18
19 #define HPET_BASE 0xfed00000
20 #define HPET_LEN 0x400
21 #define HPET_CLK_PERIOD 10 /* 10 ns*/
22
23 #define FS_PER_NS 1000000 /* 1000000 femtoseconds == 1 ns */
24 #define HPET_MIN_TIMERS 3
25 #define HPET_MAX_TIMERS 32
26
27 #define HPET_NUM_IRQ_ROUTES 32
28
29 #define HPET_LEGACY_PIT_INT 0
30 #define HPET_LEGACY_RTC_INT 1
31
32 #define HPET_CFG_ENABLE 0x001
33 #define HPET_CFG_LEGACY 0x002
34
35 #define HPET_ID 0x000
36 #define HPET_PERIOD 0x004
37 #define HPET_CFG 0x010
38 #define HPET_STATUS 0x020
39 #define HPET_COUNTER 0x0f0
40 #define HPET_TN_CFG 0x000
41 #define HPET_TN_CMP 0x008
42 #define HPET_TN_ROUTE 0x010
43 #define HPET_CFG_WRITE_MASK 0x3
44
45 #define HPET_ID_NUM_TIM_SHIFT 8
46 #define HPET_ID_NUM_TIM_MASK 0x1f00
47
48 #define HPET_TN_TYPE_LEVEL 0x002
49 #define HPET_TN_ENABLE 0x004
50 #define HPET_TN_PERIODIC 0x008
51 #define HPET_TN_PERIODIC_CAP 0x010
52 #define HPET_TN_SIZE_CAP 0x020
53 #define HPET_TN_SETVAL 0x040
54 #define HPET_TN_32BIT 0x100
55 #define HPET_TN_INT_ROUTE_MASK 0x3e00
56 #define HPET_TN_FSB_ENABLE 0x4000
57 #define HPET_TN_FSB_CAP 0x8000
58 #define HPET_TN_CFG_WRITE_MASK 0x7f4e
59 #define HPET_TN_INT_ROUTE_SHIFT 9
60 #define HPET_TN_INT_ROUTE_CAP_SHIFT 32
61 #define HPET_TN_CFG_BITS_READONLY_OR_RESERVED 0xffff80b1U
62
63 struct hpet_fw_entry
64 {
65 uint32_t event_timer_block_id;
66 uint64_t address;
67 uint16_t min_tick;
68 uint8_t page_prot;
69 } QEMU_PACKED;
70
71 struct hpet_fw_config
72 {
73 uint8_t count;
74 struct hpet_fw_entry hpet[8];
75 } QEMU_PACKED;
76
77 extern struct hpet_fw_config hpet_cfg;
78
79 #define TYPE_HPET "hpet"
80
81 static inline bool hpet_find(void)
82 {
83 return object_resolve_path_type("", TYPE_HPET, NULL);
84 }
85
86 #endif