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/*-
* Copyright (c) 2005 Poul-Henning Kamp
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef __ACPI_HPET_H__
#define __ACPI_HPET_H__
#define HPET_MEM_WIDTH 0x400 /* Expected memory region size */
/* General registers */
#define HPET_CAPABILITIES 0x0 /* General capabilities and ID */
#define HPET_CAP_VENDOR_ID 0xffff0000
#define HPET_CAP_LEG_RT 0x00008000
#define HPET_CAP_COUNT_SIZE 0x00002000 /* 1 = 64-bit, 0 = 32-bit */
#define HPET_CAP_NUM_TIM 0x00001f00
#define HPET_CAP_REV_ID 0x000000ff
#define HPET_PERIOD 0x4 /* Period (1/hz) of timer */
#define HPET_CONFIG 0x10 /* General configuration register */
#define HPET_CNF_LEG_RT 0x00000002
#define HPET_CNF_ENABLE 0x00000001
#define HPET_ISR 0x20 /* General interrupt status register */
#define HPET_MAIN_COUNTER 0xf0 /* Main counter register */
/* Timer registers */
#define HPET_TIMER_CAP_CNF(x) ((x) * 0x20 + 0x100)
#define HPET_TCAP_INT_ROUTE 0xffffffff00000000
#define HPET_TCAP_FSB_INT_DEL 0x00008000
#define HPET_TCNF_FSB_EN 0x00004000
#define HPET_TCNF_INT_ROUTE 0x00003e00
#define HPET_TCNF_32MODE 0x00000100
#define HPET_TCNF_VAL_SET 0x00000040
#define HPET_TCAP_SIZE 0x00000020 /* 1 = 64-bit, 0 = 32-bit */
#define HPET_TCAP_PER_INT 0x00000010 /* Supports periodic interrupts */
#define HPET_TCNF_TYPE 0x00000008 /* 1 = periodic, 0 = one-shot */
#define HPET_TCNF_INT_ENB 0x00000004
#define HPET_TCNF_INT_TYPE 0x00000002 /* 1 = level triggered, 0 = edge */
#define HPET_TIMER_COMPARATOR(x) ((x) * 0x20 + 0x108)
#define HPET_TIMER_FSB_VAL(x) ((x) * 0x20 + 0x110)
#define HPET_TIMER_FSB_ADDR(x) ((x) * 0x20 + 0x114)
#define HPET_MIN_CYCLES 128 /* Period considered reliable. */
#ifdef _KERNEL
struct timecounter;
struct vdso_timehands;
struct vdso_timehands32;
uint32_t hpet_vdso_timehands(struct vdso_timehands *vdso_th,
struct timecounter *tc);
uint32_t hpet_vdso_timehands32(struct vdso_timehands32 *vdso_th32,
struct timecounter *tc);
#endif
#endif /* !__ACPI_HPET_H__ */
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