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
  16 #define TYPE_ASPEED_WDT "aspeed.wdt"
  17 #define ASPEED_WDT(obj) \
  18     OBJECT_CHECK(AspeedWDTState, (obj), TYPE_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 typedef 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 } AspeedWDTState;
  37
  38 #define ASPEED_WDT_CLASS(klass) \
  39      OBJECT_CLASS_CHECK(AspeedWDTClass, (klass), TYPE_ASPEED_WDT)
  40 #define ASPEED_WDT_GET_CLASS(obj) \
  41      OBJECT_GET_CLASS(AspeedWDTClass, (obj), TYPE_ASPEED_WDT)
  42
  43 typedef struct AspeedWDTClass {
  44     SysBusDeviceClass parent_class;
  45
  46     uint32_t offset;
  47     uint32_t ext_pulse_width_mask;
  48     uint32_t reset_ctrl_reg;
  49     void (*reset_pulse)(AspeedWDTState *s, uint32_t property);
  50     void (*wdt_reload)(AspeedWDTState *s);
  51 }  AspeedWDTClass;
  52
  53 #endif /* WDT_ASPEED_H */