1 /* 2 * QEMU Emulated HPET support 3 * 4 * Copyright IBM, Corp. 2008 5 * 6 * Authors: 7 * Beth Kon <bkon@us.ibm.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2. See 10 * the COPYING file in the top-level directory. 11 * 12 */ 13 #ifndef QEMU_HPET_EMUL_H 14 #define QEMU_HPET_EMUL_H 15 16 #define HPET_BASE 0xfed00000 17 #define HPET_CLK_PERIOD 10000000ULL /* 10000000 femtoseconds == 10ns*/ 18 19 #define FS_PER_NS 1000000 20 #define HPET_MIN_TIMERS 3 21 #define HPET_MAX_TIMERS 32 22 23 #define HPET_NUM_IRQ_ROUTES 32 24 25 #define HPET_CFG_ENABLE 0x001 26 #define HPET_CFG_LEGACY 0x002 27 28 #define HPET_ID 0x000 29 #define HPET_PERIOD 0x004 30 #define HPET_CFG 0x010 31 #define HPET_STATUS 0x020 32 #define HPET_COUNTER 0x0f0 33 #define HPET_TN_CFG 0x000 34 #define HPET_TN_CMP 0x008 35 #define HPET_TN_ROUTE 0x010 36 #define HPET_CFG_WRITE_MASK 0x3 37 38 #define HPET_ID_NUM_TIM_SHIFT 8 39 #define HPET_ID_NUM_TIM_MASK 0x1f00 40 41 #define HPET_TN_TYPE_LEVEL 0x002 42 #define HPET_TN_ENABLE 0x004 43 #define HPET_TN_PERIODIC 0x008 44 #define HPET_TN_PERIODIC_CAP 0x010 45 #define HPET_TN_SIZE_CAP 0x020 46 #define HPET_TN_SETVAL 0x040 47 #define HPET_TN_32BIT 0x100 48 #define HPET_TN_INT_ROUTE_MASK 0x3e00 49 #define HPET_TN_CFG_WRITE_MASK 0x3f4e 50 #define HPET_TN_INT_ROUTE_SHIFT 9 51 #define HPET_TN_INT_ROUTE_CAP_SHIFT 32 52 #define HPET_TN_CFG_BITS_READONLY_OR_RESERVED 0xffff80b1U 53 54 #endif 55