[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 3/4] serial-mcb: Add serial via MEN chameleon bus
From: |
Johannes Thumshirn |
Subject: |
[Qemu-devel] [PATCH 3/4] serial-mcb: Add serial via MEN chameleon bus |
Date: |
Wed, 8 Aug 2018 16:16:59 +0200 |
Add MEN z125 UART over MEN Chameleon Bus emulation.
Signed-off-by: Johannes Thumshirn <address@hidden>
---
hw/char/Makefile.objs | 1 +
hw/char/serial-mcb.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 98 insertions(+)
create mode 100644 hw/char/serial-mcb.c
diff --git a/hw/char/Makefile.objs b/hw/char/Makefile.objs
index b57053129107..063f1720974d 100644
--- a/hw/char/Makefile.objs
+++ b/hw/char/Makefile.objs
@@ -6,6 +6,7 @@ common-obj-$(CONFIG_PL011) += pl011.o
common-obj-$(CONFIG_SERIAL) += serial.o
common-obj-$(CONFIG_SERIAL_ISA) += serial-isa.o
common-obj-$(CONFIG_SERIAL_PCI) += serial-pci.o
+common-obj-$(CONFIG_MCB) += serial-mcb.o
common-obj-$(CONFIG_VIRTIO_SERIAL) += virtio-console.o
common-obj-$(CONFIG_XILINX) += xilinx_uartlite.o
common-obj-$(CONFIG_XEN) += xen_console.o
diff --git a/hw/char/serial-mcb.c b/hw/char/serial-mcb.c
new file mode 100644
index 000000000000..a1087bc369dd
--- /dev/null
+++ b/hw/char/serial-mcb.c
@@ -0,0 +1,97 @@
+/*
+ * QEMU MEN 16z125 UART over MCB emulation
+ *
+ * Copyright (C) 2016 Johannes Thumshirn <address@hidden>
+ *
+ * This code is licensed under the GNU GPL v2 or (at your opinion) any
+ * later version
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/char/serial.h"
+#include "hw/mcb/mcb.h"
+
+typedef struct {
+ MCBDevice dev;
+ SerialState state;
+} MCBSerialState;
+
+static void serial_mcb_realize(DeviceState *dev, Error **errp)
+{
+ MCBDevice *mdev = MCB_DEVICE(dev);
+ MCBSerialState *mss = DO_UPCAST(MCBSerialState, dev, mdev);
+ MCBus *bus = MCB_BUS(qdev_get_parent_bus(DEVICE(dev)));
+ SerialState *s = &mss->state;
+ Error *err = 0;
+
+ mdev->gdd = mcb_new_chameleon_descriptor(bus, 125, mdev->rev,
+ mdev->var, 0x10);
+ if (!mdev->gdd) {
+ return;
+ }
+
+ s->baudbase = 115200;
+ serial_realize_core(s, &err);
+ if (err != NULL) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ s->irq = mcb_allocate_irq(&mss->dev);
+ memory_region_init_io(&s->io, OBJECT(mss), &serial_io_ops, s, "serial", 8);
+ memory_region_add_subregion(&bus->mmio_region, mdev->gdd->offset, &s->io);
+}
+
+static void serial_mcb_unrealize(DeviceState *dev, Error **errp)
+{
+ MCBDevice *mdev = MCB_DEVICE(dev);
+
+ g_free(&mdev->gdd);
+}
+
+static const VMStateDescription vmstate_mcb_serial = {
+ .name = "mcb-serial",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_MCB_DEVICE(dev, MCBSerialState),
+ VMSTATE_STRUCT(state, MCBSerialState, 0, vmstate_serial, SerialState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static Property serial_mcb_properties[] = {
+ DEFINE_PROP_CHR("chardev", MCBSerialState, state.chr),
+ DEFINE_PROP_UINT8("rev", MCBSerialState, dev.rev, 0),
+ DEFINE_PROP_UINT8("var", MCBSerialState, dev.var, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void serial_mcb_class_initfn(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ MCBDeviceClass *mc = MCB_DEVICE_CLASS(klass);
+
+ mc->realize = serial_mcb_realize;
+ mc->unrealize = serial_mcb_unrealize;
+
+ set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
+ dc->desc = "MEN 16z125 UART over MCB";
+ dc->vmsd = &vmstate_mcb_serial;
+ dc->props = serial_mcb_properties;
+}
+
+static const TypeInfo serial_mcb_info = {
+ .name = "mcb-serial",
+ .parent = TYPE_MCB_DEVICE,
+ .instance_size = sizeof(MCBSerialState),
+ .class_init = serial_mcb_class_initfn,
+};
+
+static void serial_mcb_register_types(void)
+{
+ type_register_static(&serial_mcb_info);
+}
+
+type_init(serial_mcb_register_types);
--
2.16.4