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Diffstat (limited to 'hw/s390x/3270-ccw.c')
-rw-r--r--hw/s390x/3270-ccw.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/hw/s390x/3270-ccw.c b/hw/s390x/3270-ccw.c
new file mode 100644
index 0000000..47b9e89
--- /dev/null
+++ b/hw/s390x/3270-ccw.c
@@ -0,0 +1,99 @@
+/*
+ * Emulated ccw-attached 3270 implementation
+ *
+ * Copyright 2017 IBM Corp.
+ * Author(s): Yang Chen <bjcyang@linux.vnet.ibm.com>
+ * Jing Liu <liujbjl@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu/module.h"
+#include "cpu.h"
+#include "hw/s390x/css.h"
+#include "hw/s390x/css-bridge.h"
+#include "hw/s390x/3270-ccw.h"
+
+static void emulated_ccw_3270_realize(DeviceState *ds, Error **errp)
+{
+ uint16_t chpid;
+ EmulatedCcw3270Device *dev = EMULATED_CCW_3270(ds);
+ EmulatedCcw3270Class *ck = EMULATED_CCW_3270_GET_CLASS(dev);
+ CcwDevice *cdev = CCW_DEVICE(ds);
+ CCWDeviceClass *cdk = CCW_DEVICE_GET_CLASS(cdev);
+ SubchDev *sch = css_create_virtual_sch(cdev->devno, errp);
+ Error *err = NULL;
+
+ if (!sch) {
+ return;
+ }
+
+ if (!ck->init) {
+ goto out_err;
+ }
+
+ sch->driver_data = dev;
+ cdev->sch = sch;
+ chpid = css_find_free_chpid(sch->cssid);
+
+ if (chpid > MAX_CHPID) {
+ error_setg(&err, "No available chpid to use.");
+ goto out_err;
+ }
+
+ sch->id.reserved = 0xff;
+ sch->id.cu_type = EMULATED_CCW_3270_CU_TYPE;
+ css_sch_build_virtual_schib(sch, (uint8_t)chpid,
+ EMULATED_CCW_3270_CHPID_TYPE);
+
+ ck->init(dev, &err);
+ if (err) {
+ goto out_err;
+ }
+
+ cdk->realize(cdev, &err);
+ if (err) {
+ goto out_err;
+ }
+
+ return;
+
+out_err:
+ error_propagate(errp, err);
+ css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL);
+ cdev->sch = NULL;
+ g_free(sch);
+}
+
+static Property emulated_ccw_3270_properties[] = {
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void emulated_ccw_3270_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->props = emulated_ccw_3270_properties;
+ dc->bus_type = TYPE_VIRTUAL_CSS_BUS;
+ dc->realize = emulated_ccw_3270_realize;
+ dc->hotpluggable = false;
+}
+
+static const TypeInfo emulated_ccw_3270_info = {
+ .name = TYPE_EMULATED_CCW_3270,
+ .parent = TYPE_CCW_DEVICE,
+ .instance_size = sizeof(EmulatedCcw3270Device),
+ .class_init = emulated_ccw_3270_class_init,
+ .class_size = sizeof(EmulatedCcw3270Class),
+ .abstract = true,
+};
+
+static void emulated_ccw_register(void)
+{
+ type_register_static(&emulated_ccw_3270_info);
+}
+
+type_init(emulated_ccw_register)