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 #define TYPE_ASPEED_1030_TIMER TYPE_ASPEED_TIMER "-ast1030" 35 #define TYPE_ASPEED_2700_TIMER TYPE_ASPEED_TIMER "-ast2700" 36 37 #define ASPEED_TIMER_NR_TIMERS 8 38 39 typedef struct AspeedTimer { 40 qemu_irq irq; 41 42 uint8_t id; 43 QEMUTimer timer; 44 45 /** 46 * Track the line level as the ASPEED timers implement edge triggered 47 * interrupts, signalling with both the rising and falling edge. 48 */ 49 int32_t level; 50 uint32_t reload; 51 uint32_t match[2]; 52 uint64_t start; 53 } AspeedTimer; 54 55 struct AspeedTimerCtrlState { 56 /*< private >*/ 57 SysBusDevice parent; 58 59 /*< public >*/ 60 MemoryRegion iomem; 61 62 uint32_t ctrl; 63 uint32_t ctrl2; 64 uint32_t ctrl3; 65 uint32_t irq_sts; 66 AspeedTimer timers[ASPEED_TIMER_NR_TIMERS]; 67 68 AspeedSCUState *scu; 69 }; 70 71 72 struct AspeedTimerClass { 73 SysBusDeviceClass parent_class; 74 75 uint64_t (*read)(AspeedTimerCtrlState *s, hwaddr offset); 76 void (*write)(AspeedTimerCtrlState *s, hwaddr offset, uint64_t value); 77 }; 78 79 #endif /* ASPEED_TIMER_H */ 80