@@ -16,4 +16,5 @@ common-obj-$(CONFIG_SOFTMMU) += null-machine.o
common-obj-$(CONFIG_SOFTMMU) += loader.o
common-obj-$(CONFIG_SOFTMMU) += qdev-properties-system.o
common-obj-$(CONFIG_SOFTMMU) += register.o
+common-obj-$(CONFIG_SOFTMMU) += or-irq.o
common-obj-$(CONFIG_PLATFORM_BUS) += platform-bus.o
new file mode 100644
@@ -0,0 +1,117 @@
+/*
+ * QEMU IRQ/GPIO common code.
+ *
+ * Copyright (c) 2016 Alistair Francis <alistair@alistair23.me>.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/or-irq.h"
+
+qemu_irq *qemu_get_or_irqs(DeviceState *dev)
+{
+ qemu_or_irq *s = OR_IRQ(dev);
+
+ return s->in_irqs;
+}
+
+static void or_irq_handler(void *opaque, int n, int level)
+{
+ qemu_or_irq *s = OR_IRQ(opaque);
+ int or_level = 0;
+ int i;
+
+ s->levels[n] = level;
+
+ for (i = 0; i < s->num_lines; i++) {
+ or_level |= s->levels[i];
+ }
+
+ qemu_set_irq(s->out_irq, or_level);
+}
+
+static void or_irq_reset(DeviceState *dev)
+{
+ qemu_or_irq *s = OR_IRQ(dev);
+ int i;
+
+ for (i = 0; i < MAX_OR_LINES; i++) {
+ s->levels[i] = false;
+ }
+
+ /* Trigger an update of the out irqs. We just set the level to 0 */
+ or_irq_handler(s, 0, 0);
+}
+
+static void or_irq_realize(DeviceState *dev, Error **errp)
+{
+ qemu_or_irq *s = OR_IRQ(dev);
+
+ assert(s->num_lines < MAX_OR_LINES);
+
+ s->in_irqs = qemu_allocate_irqs(or_irq_handler, s, s->num_lines);
+}
+
+static void or_irq_init(Object *obj)
+{
+ qemu_or_irq *s = OR_IRQ(obj);
+
+ qdev_init_gpio_out(DEVICE(obj), &s->out_irq, 1);
+}
+
+static const VMStateDescription vmstate_or_irq = {
+ .name = TYPE_OR_IRQ,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_BOOL_ARRAY(levels, qemu_or_irq, MAX_OR_LINES),
+ VMSTATE_END_OF_LIST(),
+ }
+};
+
+static Property or_irq_properties[] = {
+ DEFINE_PROP_UINT16("num-lines", qemu_or_irq, num_lines, 1),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void or_irq_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = or_irq_reset;
+ dc->props = or_irq_properties;
+ dc->realize = or_irq_realize;
+ dc->vmsd = &vmstate_or_irq;
+}
+
+static const TypeInfo or_irq_type_info = {
+ .name = TYPE_OR_IRQ,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(qemu_or_irq),
+ .instance_init = or_irq_init,
+ .class_init = or_irq_class_init,
+};
+
+static void or_irq_register_types(void)
+{
+ type_register_static(&or_irq_type_info);
+}
+
+type_init(or_irq_register_types)
new file mode 100644
@@ -0,0 +1,46 @@
+/*
+ * QEMU IRQ/GPIO common code.
+ *
+ * Copyright (c) 2016 Alistair Francis <alistair@alistair23.me>.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw/irq.h"
+#include "hw/sysbus.h"
+#include "qom/object.h"
+
+#define TYPE_OR_IRQ "or-irq"
+
+#define MAX_OR_LINES 16
+
+typedef struct OrIRQState qemu_or_irq;
+
+#define OR_IRQ(obj) OBJECT_CHECK(qemu_or_irq, (obj), TYPE_OR_IRQ)
+
+struct OrIRQState {
+ DeviceState parent_obj;
+
+ qemu_irq out_irq;
+ qemu_irq *in_irqs;
+ bool levels[MAX_OR_LINES];
+ uint16_t num_lines;
+};
+
+qemu_irq *qemu_get_or_irqs(DeviceState *dev);
Signed-off-by: Alistair Francis <alistair@alistair23.me> --- As the migration framework is not included in user mode this needs to be a new file. V7: - Use the standard QEMU init/realise functions V6: - Make the OR IRQ device a TYPE_DEVICE - Add vmstate hw/core/Makefile.objs | 1 + hw/core/or-irq.c | 117 ++++++++++++++++++++++++++++++++++++++++++++++++++ include/hw/or-irq.h | 46 ++++++++++++++++++++ 3 files changed, 164 insertions(+) create mode 100644 hw/core/or-irq.c create mode 100644 include/hw/or-irq.h