1 /* 2 * ASPEED AST2400 Timer 3 * 4 * Andrew Jeffery <andrew@aj.id.au> 5 * 6 * Copyright (C) 2016 IBM Corp. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License along 19 * with this program; if not, write to the Free Software Foundation, Inc., 20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 21 */ 22 #ifndef ASPEED_TIMER_H 23 #define ASPEED_TIMER_H 24 25 #include "qemu/timer.h" 26 #include "hw/misc/aspeed_scu.h" 27 #include "qom/object.h" 28 29 #define TYPE_ASPEED_TIMER "aspeed.timer" 30 OBJECT_DECLARE_TYPE(AspeedTimerCtrlState, AspeedTimerClass, ASPEED_TIMER) 31 #define TYPE_ASPEED_2400_TIMER TYPE_ASPEED_TIMER "-ast2400" 32 #define TYPE_ASPEED_2500_TIMER TYPE_ASPEED_TIMER "-ast2500" 33 #define TYPE_ASPEED_2600_TIMER TYPE_ASPEED_TIMER "-ast2600" 34 35 #define ASPEED_TIMER_NR_TIMERS 8 36 37 typedef struct AspeedTimer { 38 qemu_irq irq; 39 40 uint8_t id; 41 QEMUTimer timer; 42 43 /** 44 * Track the line level as the ASPEED timers implement edge triggered 45 * interrupts, signalling with both the rising and falling edge. 46 */ 47 int32_t level; 48 uint32_t reload; 49 uint32_t match[2]; 50 uint64_t start; 51 } AspeedTimer; 52 53 struct AspeedTimerCtrlState { 54 /*< private >*/ 55 SysBusDevice parent; 56 57 /*< public >*/ 58 MemoryRegion iomem; 59 60 uint32_t ctrl; 61 uint32_t ctrl2; 62 uint32_t ctrl3; 63 uint32_t irq_sts; 64 AspeedTimer timers[ASPEED_TIMER_NR_TIMERS]; 65 66 AspeedSCUState *scu; 67 }; 68 69 70 struct AspeedTimerClass { 71 SysBusDeviceClass parent_class; 72 73 uint64_t (*read)(AspeedTimerCtrlState *s, hwaddr offset); 74 void (*write)(AspeedTimerCtrlState *s, hwaddr offset, uint64_t value); 75 }; 76 77 #endif /* ASPEED_TIMER_H */ 78