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- /*
- * nRF51 System-on-Chip Timer peripheral
- *
- * QEMU interface:
- * + sysbus MMIO regions 0: GPIO registers
- * + sysbus irq
- *
- * Copyright 2018 Steffen Görtz <contrib@steffen-goertz.de>
- *
- * This code is licensed under the GPL version 2 or later. See
- * the COPYING file in the top-level directory.
- */
- #ifndef NRF51_TIMER_H
- #define NRF51_TIMER_H
- #include "hw/sysbus.h"
- #include "qemu/timer.h"
- #include "qom/object.h"
- #define TYPE_NRF51_TIMER "nrf51_soc.timer"
- OBJECT_DECLARE_SIMPLE_TYPE(NRF51TimerState, NRF51_TIMER)
- #define NRF51_TIMER_REG_COUNT 4
- #define NRF51_TIMER_TASK_START 0x000
- #define NRF51_TIMER_TASK_STOP 0x004
- #define NRF51_TIMER_TASK_COUNT 0x008
- #define NRF51_TIMER_TASK_CLEAR 0x00C
- #define NRF51_TIMER_TASK_SHUTDOWN 0x010
- #define NRF51_TIMER_TASK_CAPTURE_0 0x040
- #define NRF51_TIMER_TASK_CAPTURE_3 0x04C
- #define NRF51_TIMER_EVENT_COMPARE_0 0x140
- #define NRF51_TIMER_EVENT_COMPARE_1 0x144
- #define NRF51_TIMER_EVENT_COMPARE_2 0x148
- #define NRF51_TIMER_EVENT_COMPARE_3 0x14C
- #define NRF51_TIMER_REG_SHORTS 0x200
- #define NRF51_TIMER_REG_SHORTS_MASK 0xf0f
- #define NRF51_TIMER_REG_INTENSET 0x304
- #define NRF51_TIMER_REG_INTENCLR 0x308
- #define NRF51_TIMER_REG_INTEN_MASK 0xf0000
- #define NRF51_TIMER_REG_MODE 0x504
- #define NRF51_TIMER_REG_MODE_MASK 0x01
- #define NRF51_TIMER_TIMER 0
- #define NRF51_TIMER_COUNTER 1
- #define NRF51_TIMER_REG_BITMODE 0x508
- #define NRF51_TIMER_REG_BITMODE_MASK 0x03
- #define NRF51_TIMER_WIDTH_16 0
- #define NRF51_TIMER_WIDTH_8 1
- #define NRF51_TIMER_WIDTH_24 2
- #define NRF51_TIMER_WIDTH_32 3
- #define NRF51_TIMER_REG_PRESCALER 0x510
- #define NRF51_TIMER_REG_PRESCALER_MASK 0x0F
- #define NRF51_TIMER_REG_CC0 0x540
- #define NRF51_TIMER_REG_CC3 0x54C
- struct NRF51TimerState {
- SysBusDevice parent_obj;
- MemoryRegion iomem;
- qemu_irq irq;
- uint8_t id;
- QEMUTimer timer;
- int64_t timer_start_ns;
- int64_t update_counter_ns;
- uint32_t counter;
- bool running;
- uint8_t events_compare[NRF51_TIMER_REG_COUNT];
- uint32_t cc[NRF51_TIMER_REG_COUNT];
- uint32_t shorts;
- uint32_t inten;
- uint32_t mode;
- uint32_t bitmode;
- uint32_t prescaler;
- };
- #endif
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