From 2811ac30596644c1bfc3eee4e2ebffd2a107c3e4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Fri, 4 Oct 2019 01:03:56 +0200 Subject: hw: Move sun4v hypervisor RTC from hw/timer/ to hw/rtc/ subdirectory MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move RTC devices under the hw/rtc/ subdirectory. Reviewed-by: Alistair Francis Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Artyom Tarasenko Message-Id: <20191003230404.19384-7-philmd@redhat.com> Signed-off-by: Laurent Vivier --- hw/rtc/sun4v-rtc.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 hw/rtc/sun4v-rtc.c (limited to 'hw/rtc/sun4v-rtc.c') diff --git a/hw/rtc/sun4v-rtc.c b/hw/rtc/sun4v-rtc.c new file mode 100644 index 0000000..ada01b5 --- /dev/null +++ b/hw/rtc/sun4v-rtc.c @@ -0,0 +1,95 @@ +/* + * QEMU sun4v Real Time Clock device + * + * The sun4v_rtc device (sun4v tod clock) + * + * Copyright (c) 2016 Artyom Tarasenko + * + * This code is licensed under the GNU GPL v3 or (at your option) any later + * version. + */ + +#include "qemu/osdep.h" +#include "hw/sysbus.h" +#include "qemu/module.h" +#include "qemu/timer.h" +#include "hw/rtc/sun4v-rtc.h" +#include "trace.h" + + +#define TYPE_SUN4V_RTC "sun4v_rtc" +#define SUN4V_RTC(obj) OBJECT_CHECK(Sun4vRtc, (obj), TYPE_SUN4V_RTC) + +typedef struct Sun4vRtc { + SysBusDevice parent_obj; + + MemoryRegion iomem; +} Sun4vRtc; + +static uint64_t sun4v_rtc_read(void *opaque, hwaddr addr, + unsigned size) +{ + uint64_t val = get_clock_realtime() / NANOSECONDS_PER_SECOND; + if (!(addr & 4ULL)) { + /* accessing the high 32 bits */ + val >>= 32; + } + trace_sun4v_rtc_read(addr, val); + return val; +} + +static void sun4v_rtc_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + trace_sun4v_rtc_write(addr, val); +} + +static const MemoryRegionOps sun4v_rtc_ops = { + .read = sun4v_rtc_read, + .write = sun4v_rtc_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +void sun4v_rtc_init(hwaddr addr) +{ + DeviceState *dev; + SysBusDevice *s; + + dev = qdev_create(NULL, TYPE_SUN4V_RTC); + s = SYS_BUS_DEVICE(dev); + + qdev_init_nofail(dev); + + sysbus_mmio_map(s, 0, addr); +} + +static void sun4v_rtc_realize(DeviceState *dev, Error **errp) +{ + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + Sun4vRtc *s = SUN4V_RTC(dev); + + memory_region_init_io(&s->iomem, OBJECT(s), &sun4v_rtc_ops, s, + "sun4v-rtc", 0x08ULL); + sysbus_init_mmio(sbd, &s->iomem); +} + +static void sun4v_rtc_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = sun4v_rtc_realize; +} + +static const TypeInfo sun4v_rtc_info = { + .name = TYPE_SUN4V_RTC, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(Sun4vRtc), + .class_init = sun4v_rtc_class_init, +}; + +static void sun4v_rtc_register_types(void) +{ + type_register_static(&sun4v_rtc_info); +} + +type_init(sun4v_rtc_register_types) -- cgit v1.1