77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
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* QEMU Emulated HPET support
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*
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* Copyright IBM, Corp. 2008
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*
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* Authors:
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* Beth Kon <bkon@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#ifndef QEMU_HPET_EMUL_H
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#define QEMU_HPET_EMUL_H
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#define HPET_BASE 0xfed00000
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#define HPET_CLK_PERIOD 10000000ULL /* 10000000 femtoseconds == 10ns*/
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#define FS_PER_NS 1000000
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#define HPET_MIN_TIMERS 3
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#define HPET_MAX_TIMERS 32
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#define HPET_NUM_IRQ_ROUTES 32
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#define HPET_LEGACY_PIT_INT 0
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#define HPET_LEGACY_RTC_INT 1
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#define HPET_CFG_ENABLE 0x001
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#define HPET_CFG_LEGACY 0x002
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#define HPET_ID 0x000
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#define HPET_PERIOD 0x004
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#define HPET_CFG 0x010
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#define HPET_STATUS 0x020
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#define HPET_COUNTER 0x0f0
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#define HPET_TN_CFG 0x000
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#define HPET_TN_CMP 0x008
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#define HPET_TN_ROUTE 0x010
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#define HPET_CFG_WRITE_MASK 0x3
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#define HPET_ID_NUM_TIM_SHIFT 8
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#define HPET_ID_NUM_TIM_MASK 0x1f00
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#define HPET_TN_TYPE_LEVEL 0x002
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#define HPET_TN_ENABLE 0x004
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#define HPET_TN_PERIODIC 0x008
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#define HPET_TN_PERIODIC_CAP 0x010
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#define HPET_TN_SIZE_CAP 0x020
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#define HPET_TN_SETVAL 0x040
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#define HPET_TN_32BIT 0x100
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#define HPET_TN_INT_ROUTE_MASK 0x3e00
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#define HPET_TN_FSB_ENABLE 0x4000
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#define HPET_TN_FSB_CAP 0x8000
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#define HPET_TN_CFG_WRITE_MASK 0x7f4e
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#define HPET_TN_INT_ROUTE_SHIFT 9
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#define HPET_TN_INT_ROUTE_CAP_SHIFT 32
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#define HPET_TN_CFG_BITS_READONLY_OR_RESERVED 0xffff80b1U
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struct hpet_fw_entry
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{
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uint32_t event_timer_block_id;
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uint64_t address;
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uint16_t min_tick;
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uint8_t page_prot;
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} QEMU_PACKED;
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struct hpet_fw_config
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{
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uint8_t count;
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struct hpet_fw_entry hpet[8];
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} QEMU_PACKED;
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extern struct hpet_fw_config hpet_cfg;
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bool hpet_find(void);
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#endif
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