1f831d6e0SJohn Baldwin /*- 2f831d6e0SJohn Baldwin * Copyright (c) 2005 Poul-Henning Kamp 3f831d6e0SJohn Baldwin * All rights reserved. 4f831d6e0SJohn Baldwin * 5f831d6e0SJohn Baldwin * Redistribution and use in source and binary forms, with or without 6f831d6e0SJohn Baldwin * modification, are permitted provided that the following conditions 7f831d6e0SJohn Baldwin * are met: 8f831d6e0SJohn Baldwin * 1. Redistributions of source code must retain the above copyright 9f831d6e0SJohn Baldwin * notice, this list of conditions and the following disclaimer. 10f831d6e0SJohn Baldwin * 2. Redistributions in binary form must reproduce the above copyright 11f831d6e0SJohn Baldwin * notice, this list of conditions and the following disclaimer in the 12f831d6e0SJohn Baldwin * documentation and/or other materials provided with the distribution. 13f831d6e0SJohn Baldwin * 14f831d6e0SJohn Baldwin * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15f831d6e0SJohn Baldwin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16f831d6e0SJohn Baldwin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17f831d6e0SJohn Baldwin * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18f831d6e0SJohn Baldwin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19f831d6e0SJohn Baldwin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20f831d6e0SJohn Baldwin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21f831d6e0SJohn Baldwin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22f831d6e0SJohn Baldwin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23f831d6e0SJohn Baldwin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24f831d6e0SJohn Baldwin * SUCH DAMAGE. 25f831d6e0SJohn Baldwin */ 26f831d6e0SJohn Baldwin 27f831d6e0SJohn Baldwin #ifndef __ACPI_HPET_H__ 28f831d6e0SJohn Baldwin #define __ACPI_HPET_H__ 29f831d6e0SJohn Baldwin 30f831d6e0SJohn Baldwin #define HPET_MEM_WIDTH 0x400 /* Expected memory region size */ 31*964bf2f9SJohn F. Carr #define HPET_MEM_MIN_WIDTH 0x100 /* Minimum memory region size */ 32f831d6e0SJohn Baldwin 33f831d6e0SJohn Baldwin /* General registers */ 34f831d6e0SJohn Baldwin #define HPET_CAPABILITIES 0x0 /* General capabilities and ID */ 35f831d6e0SJohn Baldwin #define HPET_CAP_VENDOR_ID 0xffff0000 36f831d6e0SJohn Baldwin #define HPET_CAP_LEG_RT 0x00008000 37f831d6e0SJohn Baldwin #define HPET_CAP_COUNT_SIZE 0x00002000 /* 1 = 64-bit, 0 = 32-bit */ 38f831d6e0SJohn Baldwin #define HPET_CAP_NUM_TIM 0x00001f00 39f831d6e0SJohn Baldwin #define HPET_CAP_REV_ID 0x000000ff 40f831d6e0SJohn Baldwin #define HPET_PERIOD 0x4 /* Period (1/hz) of timer */ 41f831d6e0SJohn Baldwin #define HPET_CONFIG 0x10 /* General configuration register */ 42f831d6e0SJohn Baldwin #define HPET_CNF_LEG_RT 0x00000002 43f831d6e0SJohn Baldwin #define HPET_CNF_ENABLE 0x00000001 44f831d6e0SJohn Baldwin #define HPET_ISR 0x20 /* General interrupt status register */ 45f831d6e0SJohn Baldwin #define HPET_MAIN_COUNTER 0xf0 /* Main counter register */ 46f831d6e0SJohn Baldwin 47f831d6e0SJohn Baldwin /* Timer registers */ 48f831d6e0SJohn Baldwin #define HPET_TIMER_CAP_CNF(x) ((x) * 0x20 + 0x100) 49f831d6e0SJohn Baldwin #define HPET_TCAP_INT_ROUTE 0xffffffff00000000 50f831d6e0SJohn Baldwin #define HPET_TCAP_FSB_INT_DEL 0x00008000 51f831d6e0SJohn Baldwin #define HPET_TCNF_FSB_EN 0x00004000 52f831d6e0SJohn Baldwin #define HPET_TCNF_INT_ROUTE 0x00003e00 53f831d6e0SJohn Baldwin #define HPET_TCNF_32MODE 0x00000100 54f831d6e0SJohn Baldwin #define HPET_TCNF_VAL_SET 0x00000040 55f831d6e0SJohn Baldwin #define HPET_TCAP_SIZE 0x00000020 /* 1 = 64-bit, 0 = 32-bit */ 56f831d6e0SJohn Baldwin #define HPET_TCAP_PER_INT 0x00000010 /* Supports periodic interrupts */ 57f831d6e0SJohn Baldwin #define HPET_TCNF_TYPE 0x00000008 /* 1 = periodic, 0 = one-shot */ 58f831d6e0SJohn Baldwin #define HPET_TCNF_INT_ENB 0x00000004 59875b8844SAlexander Motin #define HPET_TCNF_INT_TYPE 0x00000002 /* 1 = level triggered, 0 = edge */ 60f831d6e0SJohn Baldwin #define HPET_TIMER_COMPARATOR(x) ((x) * 0x20 + 0x108) 61f831d6e0SJohn Baldwin #define HPET_TIMER_FSB_VAL(x) ((x) * 0x20 + 0x110) 62f831d6e0SJohn Baldwin #define HPET_TIMER_FSB_ADDR(x) ((x) * 0x20 + 0x114) 63f831d6e0SJohn Baldwin 6498393876SAlexander Motin #define HPET_MIN_CYCLES 128 /* Period considered reliable. */ 6598393876SAlexander Motin 6616808549SKonstantin Belousov #ifdef _KERNEL 6716808549SKonstantin Belousov struct timecounter; 6816808549SKonstantin Belousov struct vdso_timehands; 6916808549SKonstantin Belousov struct vdso_timehands32; 7016808549SKonstantin Belousov 7116808549SKonstantin Belousov uint32_t hpet_vdso_timehands(struct vdso_timehands *vdso_th, 7216808549SKonstantin Belousov struct timecounter *tc); 7316808549SKonstantin Belousov uint32_t hpet_vdso_timehands32(struct vdso_timehands32 *vdso_th32, 7416808549SKonstantin Belousov struct timecounter *tc); 7516808549SKonstantin Belousov #endif 7616808549SKonstantin Belousov 77f831d6e0SJohn Baldwin #endif /* !__ACPI_HPET_H__ */ 78