include/hw/timer/stellaris-gptm.h

   1 /*
   2  * Luminary Micro Stellaris General Purpose Timer Module
   3  *
   4  * Copyright (c) 2006 CodeSourcery.
   5  * Written by Paul Brook
   6  *
   7  * This code is licensed under the GPL.
   8  */
   9
  10 #ifndef HW_TIMER_STELLARIS_GPTM_H
  11 #define HW_TIMER_STELLARIS_GPTM_H
  12
  13 #include "qom/object.h"
  14 #include "hw/sysbus.h"
  15 #include "hw/irq.h"
  16 #include "hw/clock.h"
  17
  18 #define TYPE_STELLARIS_GPTM "stellaris-gptm"
  19 OBJECT_DECLARE_SIMPLE_TYPE(gptm_state, STELLARIS_GPTM)
  20
  21 /*
  22  * QEMU interface:
  23  *  + sysbus MMIO region 0: register bank
  24  *  + sysbus IRQ 0: timer interrupt
  25  *  + unnamed GPIO output 0: trigger output for the ADC
  26  *  + Clock input "clk": the 32-bit countdown timer runs at this speed
  27  */
  28 struct gptm_state {
  29     SysBusDevice parent_obj;
  30
  31     MemoryRegion iomem;
  32     uint32_t config;
  33     uint32_t mode[2];
  34     uint32_t control;
  35     uint32_t state;
  36     uint32_t mask;
  37     uint32_t load[2];
  38     uint32_t match[2];
  39     uint32_t prescale[2];
  40     uint32_t match_prescale[2];
  41     uint32_t rtc;
  42     int64_t tick[2];
  43     struct gptm_state *opaque[2];
  44     QEMUTimer *timer[2];
  45     /* The timers have an alternate output used to trigger the ADC.  */
  46     qemu_irq trigger;
  47     qemu_irq irq;
  48     Clock *clk;
  49 };
  50
  51 #endif