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/*
* QEMU Emulated HPET support
*
* Copyright IBM, Corp. 2008
*
* Authors:
* Beth Kon <bkon@us.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
*/
#ifndef HW_HPET_H
#define HW_HPET_H
#include "qom/object.h"
#define HPET_BASE 0xfed00000
#define HPET_LEN 0x400
#define HPET_CLK_PERIOD 10 /* 10 ns*/
#define FS_PER_NS 1000000 /* 1000000 femtoseconds == 1 ns */
#define HPET_MIN_TIMERS 3
#define HPET_MAX_TIMERS 32
#define HPET_NUM_IRQ_ROUTES 32
#define HPET_LEGACY_PIT_INT 0
#define HPET_LEGACY_RTC_INT 1
#define HPET_CFG_ENABLE 0x001
#define HPET_CFG_LEGACY 0x002
#define HPET_ID 0x000
#define HPET_PERIOD 0x004
#define HPET_CFG 0x010
#define HPET_STATUS 0x020
#define HPET_COUNTER 0x0f0
#define HPET_TN_CFG 0x000
#define HPET_TN_CMP 0x008
#define HPET_TN_ROUTE 0x010
#define HPET_CFG_WRITE_MASK 0x3
#define HPET_ID_NUM_TIM_SHIFT 8
#define HPET_ID_NUM_TIM_MASK 0x1f00
#define HPET_TN_TYPE_LEVEL 0x002
#define HPET_TN_ENABLE 0x004
#define HPET_TN_PERIODIC 0x008
#define HPET_TN_PERIODIC_CAP 0x010
#define HPET_TN_SIZE_CAP 0x020
#define HPET_TN_SETVAL 0x040
#define HPET_TN_32BIT 0x100
#define HPET_TN_INT_ROUTE_MASK 0x3e00
#define HPET_TN_FSB_ENABLE 0x4000
#define HPET_TN_FSB_CAP 0x8000
#define HPET_TN_CFG_WRITE_MASK 0x7f4e
#define HPET_TN_INT_ROUTE_SHIFT 9
#define HPET_TN_INT_ROUTE_CAP_SHIFT 32
#define HPET_TN_CFG_BITS_READONLY_OR_RESERVED 0xffff80b1U
struct hpet_fw_entry
{
uint32_t event_timer_block_id;
uint64_t address;
uint16_t min_tick;
uint8_t page_prot;
} QEMU_PACKED;
struct hpet_fw_config
{
uint8_t count;
struct hpet_fw_entry hpet[8];
} QEMU_PACKED;
extern struct hpet_fw_config hpet_cfg;
#define TYPE_HPET "hpet"
static inline bool hpet_find(void)
{
return object_resolve_path_type("", TYPE_HPET, NULL);
}
#endif
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