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" 20 OBJECT_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 57 struct 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