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Diffstat (limited to 'include/hw/timer/sse-timer.h')
| -rw-r--r-- | include/hw/timer/sse-timer.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/include/hw/timer/sse-timer.h b/include/hw/timer/sse-timer.h new file mode 100644 index 0000000000..b4ee8e7f6c --- /dev/null +++ b/include/hw/timer/sse-timer.h @@ -0,0 +1,53 @@ +/* + * Arm SSE Subsystem System Timer + * + * Copyright (c) 2020 Linaro Limited + * Written by Peter Maydell + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 or + * (at your option) any later version. + */ + +/* + * This is a model of the "System timer" which is documented in + * the Arm SSE-123 Example Subsystem Technical Reference Manual: + * https://developer.arm.com/documentation/101370/latest/ + * + * QEMU interface: + * + QOM property "counter": link property to be set to the + * TYPE_SSE_COUNTER timestamp counter device this timer runs off + * + sysbus MMIO region 0: the register bank + * + sysbus IRQ 0: timer interrupt + */ + +#ifndef SSE_TIMER_H +#define SSE_TIMER_H + +#include "hw/sysbus.h" +#include "qom/object.h" +#include "hw/timer/sse-counter.h" + +#define TYPE_SSE_TIMER "sse-timer" +OBJECT_DECLARE_SIMPLE_TYPE(SSETimer, SSE_TIMER) + +struct SSETimer { + /*< private >*/ + SysBusDevice parent_obj; + + /*< public >*/ + MemoryRegion iomem; + qemu_irq irq; + SSECounter *counter; + QEMUTimer timer; + Notifier counter_notifier; + + uint32_t cntfrq; + uint32_t cntp_ctl; + uint64_t cntp_cval; + uint64_t cntp_aival; + uint32_t cntp_aival_ctl; + uint32_t cntp_aival_reload; +}; + +#endif |