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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 | #ifndef QEMU_HPET_EMUL_H | |
14 | #define QEMU_HPET_EMUL_H | |
15 | ||
16 | #define HPET_BASE 0xfed00000 | |
17 | #define HPET_CLK_PERIOD 10000000ULL /* 10000000 femtoseconds == 10ns*/ | |
18 | ||
19 | #define FS_PER_NS 1000000 | |
20 | #define HPET_MIN_TIMERS 3 | |
21 | #define HPET_MAX_TIMERS 32 | |
22 | ||
23 | #define HPET_NUM_IRQ_ROUTES 32 | |
24 | ||
25 | #define HPET_LEGACY_PIT_INT 0 | |
26 | #define HPET_LEGACY_RTC_INT 1 | |
27 | ||
28 | #define HPET_CFG_ENABLE 0x001 | |
29 | #define HPET_CFG_LEGACY 0x002 | |
30 | ||
31 | #define HPET_ID 0x000 | |
32 | #define HPET_PERIOD 0x004 | |
33 | #define HPET_CFG 0x010 | |
34 | #define HPET_STATUS 0x020 | |
35 | #define HPET_COUNTER 0x0f0 | |
36 | #define HPET_TN_CFG 0x000 | |
37 | #define HPET_TN_CMP 0x008 | |
38 | #define HPET_TN_ROUTE 0x010 | |
39 | #define HPET_CFG_WRITE_MASK 0x3 | |
40 | ||
41 | #define HPET_ID_NUM_TIM_SHIFT 8 | |
42 | #define HPET_ID_NUM_TIM_MASK 0x1f00 | |
43 | ||
44 | #define HPET_TN_TYPE_LEVEL 0x002 | |
45 | #define HPET_TN_ENABLE 0x004 | |
46 | #define HPET_TN_PERIODIC 0x008 | |
47 | #define HPET_TN_PERIODIC_CAP 0x010 | |
48 | #define HPET_TN_SIZE_CAP 0x020 | |
49 | #define HPET_TN_SETVAL 0x040 | |
50 | #define HPET_TN_32BIT 0x100 | |
51 | #define HPET_TN_INT_ROUTE_MASK 0x3e00 | |
52 | #define HPET_TN_FSB_ENABLE 0x4000 | |
53 | #define HPET_TN_FSB_CAP 0x8000 | |
54 | #define HPET_TN_CFG_WRITE_MASK 0x7f4e | |
55 | #define HPET_TN_INT_ROUTE_SHIFT 9 | |
56 | #define HPET_TN_INT_ROUTE_CAP_SHIFT 32 | |
57 | #define HPET_TN_CFG_BITS_READONLY_OR_RESERVED 0xffff80b1U | |
58 | ||
59 | struct hpet_fw_entry | |
60 | { | |
61 | uint32_t event_timer_block_id; | |
62 | uint64_t address; | |
63 | uint16_t min_tick; | |
64 | uint8_t page_prot; | |
65 | } QEMU_PACKED; | |
66 | ||
67 | struct hpet_fw_config | |
68 | { | |
69 | uint8_t count; | |
70 | struct hpet_fw_entry hpet[8]; | |
71 | } QEMU_PACKED; | |
72 | ||
73 | extern struct hpet_fw_config hpet_cfg; | |
74 | #endif |