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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 QEMU_HPET_EMUL_H

#define QEMU_HPET_EMUL_H

#define HPET_BASE               0xfed00000

#define HPET_CLK_PERIOD         10000000ULL /* 10000000 femtoseconds == 10ns*/

#define FS_PER_NS 1000000

#define HPET_MIN_TIMERS         3

#define HPET_MAX_TIMERS         32

#define HPET_NUM_IRQ_ROUTES     32

#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;

} __attribute__ ((packed));

struct hpet_fw_config

{

    uint8_t count;

    struct hpet_fw_entry hpet[8];

} __attribute__ ((packed));

extern struct hpet_fw_config hpet_cfg;

#endif