LXR qemu/include/hw/timer/nrf51

   1/*
   2 * nRF51 System-on-Chip Timer peripheral
   3 *
   4 * QEMU interface:
   5 * + sysbus MMIO regions 0: GPIO registers
   6 * + sysbus irq
   7 *
   8 * Copyright 2018 Steffen Görtz <contrib@steffen-goertz.de>
   9 *
  10 * This code is licensed under the GPL version 2 or later.  See
  11 * the COPYING file in the top-level directory.
  12 */
  13#ifndef NRF51_TIMER_H
  14#define NRF51_TIMER_H
  15
  16#include "hw/sysbus.h"
  17#include "qemu/timer.h"
  18#include "qom/object.h"
  19#define TYPE_NRF51_TIMER "nrf51_soc.timer"
  20OBJECT_DECLARE_SIMPLE_TYPE(NRF51TimerState, NRF51_TIMER)
  21
  22#define NRF51_TIMER_REG_COUNT 4
  23
  24#define NRF51_TIMER_TASK_START 0x000
  25#define NRF51_TIMER_TASK_STOP 0x004
  26#define NRF51_TIMER_TASK_COUNT 0x008
  27#define NRF51_TIMER_TASK_CLEAR 0x00C
  28#define NRF51_TIMER_TASK_SHUTDOWN 0x010
  29#define NRF51_TIMER_TASK_CAPTURE_0 0x040
  30#define NRF51_TIMER_TASK_CAPTURE_3 0x04C
  31
  32#define NRF51_TIMER_EVENT_COMPARE_0 0x140
  33#define NRF51_TIMER_EVENT_COMPARE_1 0x144
  34#define NRF51_TIMER_EVENT_COMPARE_2 0x148
  35#define NRF51_TIMER_EVENT_COMPARE_3 0x14C
  36
  37#define NRF51_TIMER_REG_SHORTS 0x200
  38#define NRF51_TIMER_REG_SHORTS_MASK 0xf0f
  39#define NRF51_TIMER_REG_INTENSET 0x304
  40#define NRF51_TIMER_REG_INTENCLR 0x308
  41#define NRF51_TIMER_REG_INTEN_MASK 0xf0000
  42#define NRF51_TIMER_REG_MODE 0x504
  43#define NRF51_TIMER_REG_MODE_MASK 0x01
  44#define NRF51_TIMER_TIMER 0
  45#define NRF51_TIMER_COUNTER 1
  46#define NRF51_TIMER_REG_BITMODE 0x508
  47#define NRF51_TIMER_REG_BITMODE_MASK 0x03
  48#define NRF51_TIMER_WIDTH_16 0
  49#define NRF51_TIMER_WIDTH_8 1
  50#define NRF51_TIMER_WIDTH_24 2
  51#define NRF51_TIMER_WIDTH_32 3
  52#define NRF51_TIMER_REG_PRESCALER 0x510
  53#define NRF51_TIMER_REG_PRESCALER_MASK 0x0F
  54#define NRF51_TIMER_REG_CC0 0x540
  55#define NRF51_TIMER_REG_CC3 0x54C
  56
  57struct NRF51TimerState {
  58    SysBusDevice parent_obj;
  59
  60    MemoryRegion iomem;
  61    qemu_irq irq;
  62
  63    uint8_t id;
  64    QEMUTimer timer;
  65    int64_t timer_start_ns;
  66    int64_t update_counter_ns;
  67    uint32_t counter;
  68
  69    bool running;
  70
  71    uint8_t events_compare[NRF51_TIMER_REG_COUNT];
  72    uint32_t cc[NRF51_TIMER_REG_COUNT];
  73    uint32_t shorts;
  74    uint32_t inten;
  75    uint32_t mode;
  76    uint32_t bitmode;
  77    uint32_t prescaler;
  78
  79};
  80
  81
  82#endif
  83