include/hw/watchdog/wdt_aspeed.h

   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 OBJECT_DECLARE_TYPE(AspeedWDTState, AspeedWDTClass, ASPEED_WDT)
  19 #define TYPE_ASPEED_2400_WDT TYPE_ASPEED_WDT "-ast2400"
  20 #define TYPE_ASPEED_2500_WDT TYPE_ASPEED_WDT "-ast2500"
  21 #define TYPE_ASPEED_2600_WDT TYPE_ASPEED_WDT "-ast2600"
  22
  23 #define ASPEED_WDT_REGS_MAX        (0x20 / 4)
  24
  25 struct AspeedWDTState {
  26     /*< private >*/
  27     SysBusDevice parent_obj;
  28     QEMUTimer *timer;
  29
  30     /*< public >*/
  31     MemoryRegion iomem;
  32     uint32_t regs[ASPEED_WDT_REGS_MAX];
  33
  34     AspeedSCUState *scu;
  35     uint32_t pclk_freq;
  36 };
  37
  38
  39 struct AspeedWDTClass {
  40     SysBusDeviceClass parent_class;
  41
  42     uint32_t offset;
  43     uint32_t ext_pulse_width_mask;
  44     uint32_t reset_ctrl_reg;
  45     void (*reset_pulse)(AspeedWDTState *s, uint32_t property);
  46     void (*wdt_reload)(AspeedWDTState *s);
  47 };
  48
  49 #endif /* WDT_ASPEED_H */