hpet.h (1974B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASM_HPET_H 3#define _ASM_HPET_H 4 5#ifdef CONFIG_RS780_HPET 6 7#define HPET_MMAP_SIZE 1024 8 9#define HPET_ID 0x000 10#define HPET_PERIOD 0x004 11#define HPET_CFG 0x010 12#define HPET_STATUS 0x020 13#define HPET_COUNTER 0x0f0 14 15#define HPET_Tn_CFG(n) (0x100 + 0x20 * n) 16#define HPET_Tn_CMP(n) (0x108 + 0x20 * n) 17#define HPET_Tn_ROUTE(n) (0x110 + 0x20 * n) 18 19#define HPET_T0_IRS 0x001 20#define HPET_T1_IRS 0x002 21#define HPET_T3_IRS 0x004 22 23#define HPET_T0_CFG 0x100 24#define HPET_T0_CMP 0x108 25#define HPET_T0_ROUTE 0x110 26#define HPET_T1_CFG 0x120 27#define HPET_T1_CMP 0x128 28#define HPET_T1_ROUTE 0x130 29#define HPET_T2_CFG 0x140 30#define HPET_T2_CMP 0x148 31#define HPET_T2_ROUTE 0x150 32 33#define HPET_ID_REV 0x000000ff 34#define HPET_ID_NUMBER 0x00001f00 35#define HPET_ID_64BIT 0x00002000 36#define HPET_ID_LEGSUP 0x00008000 37#define HPET_ID_VENDOR 0xffff0000 38#define HPET_ID_NUMBER_SHIFT 8 39#define HPET_ID_VENDOR_SHIFT 16 40 41#define HPET_CFG_ENABLE 0x001 42#define HPET_CFG_LEGACY 0x002 43#define HPET_LEGACY_8254 2 44#define HPET_LEGACY_RTC 8 45 46#define HPET_TN_LEVEL 0x0002 47#define HPET_TN_ENABLE 0x0004 48#define HPET_TN_PERIODIC 0x0008 49#define HPET_TN_PERIODIC_CAP 0x0010 50#define HPET_TN_64BIT_CAP 0x0020 51#define HPET_TN_SETVAL 0x0040 52#define HPET_TN_32BIT 0x0100 53#define HPET_TN_ROUTE 0x3e00 54#define HPET_TN_FSB 0x4000 55#define HPET_TN_FSB_CAP 0x8000 56#define HPET_TN_ROUTE_SHIFT 9 57 58/* Max HPET Period is 10^8 femto sec as in HPET spec */ 59#define HPET_MAX_PERIOD 100000000UL 60/* 61 * Min HPET period is 10^5 femto sec just for safety. If it is less than this, 62 * then 32 bit HPET counter wrapsaround in less than 0.5 sec. 63 */ 64#define HPET_MIN_PERIOD 100000UL 65 66#define HPET_ADDR 0x20000 67#define HPET_MMIO_ADDR 0x90000e0000020000 68#define HPET_FREQ 14318780 69#define HPET_COMPARE_VAL ((HPET_FREQ + HZ / 2) / HZ) 70#define HPET_T0_IRQ 0 71 72extern void __init setup_hpet_timer(void); 73#endif /* CONFIG_RS780_HPET */ 74#endif /* _ASM_HPET_H */