1 /* 2 * ASPEED Watchdog Controller 3 * 4 * Copyright (C) 2016-2017 IBM Corp. 5 * 6 * This code is licensed under the GPL version 2 or later. See the 7 * COPYING file in the top-level directory. 8 */ 9 10 #ifndef WDT_ASPEED_H 11 #define WDT_ASPEED_H 12 13 #include "hw/misc/aspeed_scu.h" 14 #include "hw/sysbus.h" 15 #include "qom/object.h" 16 17 #define TYPE_ASPEED_WDT "aspeed.wdt" 18 typedef struct AspeedWDTClass AspeedWDTClass; 19 typedef struct AspeedWDTState AspeedWDTState; 20 DECLARE_OBJ_CHECKERS(AspeedWDTState, AspeedWDTClass, 21 ASPEED_WDT, TYPE_ASPEED_WDT) 22 #define TYPE_ASPEED_2400_WDT TYPE_ASPEED_WDT "-ast2400" 23 #define TYPE_ASPEED_2500_WDT TYPE_ASPEED_WDT "-ast2500" 24 #define TYPE_ASPEED_2600_WDT TYPE_ASPEED_WDT "-ast2600" 25 26 #define ASPEED_WDT_REGS_MAX (0x20 / 4) 27 28 struct AspeedWDTState { 29 /*< private >*/ 30 SysBusDevice parent_obj; 31 QEMUTimer *timer; 32 33 /*< public >*/ 34 MemoryRegion iomem; 35 uint32_t regs[ASPEED_WDT_REGS_MAX]; 36 37 AspeedSCUState *scu; 38 uint32_t pclk_freq; 39 }; 40 41 42 struct AspeedWDTClass { 43 SysBusDeviceClass parent_class; 44 45 uint32_t offset; 46 uint32_t ext_pulse_width_mask; 47 uint32_t reset_ctrl_reg; 48 void (*reset_pulse)(AspeedWDTState *s, uint32_t property); 49 void (*wdt_reload)(AspeedWDTState *s); 50 }; 51 52 #endif /* WDT_ASPEED_H */ 53