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 72 extern void __init setup_hpet_timer(void); 73 #endif /* CONFIG_RS780_HPET */ 74 #endif /* _ASM_HPET_H */ 75