Add qemu 2.4.0

[kvmfornfv.git] / qemu / include / standard-headers / asm-s390 / kvm_virtio.h

diff --git a/qemu/include/standard-headers/asm-s390/kvm_virtio.h b/qemu/include/standard-headers/asm-s390/kvm_virtio.h
new file mode 100644 (file)
index 0000000..daad324
--- /dev/null
+++ b/qemu/include/standard-headers/asm-s390/kvm_virtio.h
@@ -0,0 +1,64 @@
+/*
+ * definition for virtio for kvm on s390
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License (version 2 only)
+ * as published by the Free Software Foundation.
+ *
+ *    Author(s): Christian Borntraeger <borntraeger@de.ibm.com>
+ */
+
+#ifndef __KVM_S390_VIRTIO_H
+#define __KVM_S390_VIRTIO_H
+
+#include "standard-headers/linux/types.h"
+
+struct kvm_device_desc {
+       /* The device type: console, network, disk etc.  Type 0 terminates. */
+       uint8_t type;
+       /* The number of virtqueues (first in config array) */
+       uint8_t num_vq;
+       /*
+        * The number of bytes of feature bits.  Multiply by 2: one for host
+        * features and one for guest acknowledgements.
+        */
+       uint8_t feature_len;
+       /* The number of bytes of the config array after virtqueues. */
+       uint8_t config_len;
+       /* A status byte, written by the Guest. */
+       uint8_t status;
+       uint8_t config[0];
+};
+
+/*
+ * This is how we expect the device configuration field for a virtqueue
+ * to be laid out in config space.
+ */
+struct kvm_vqconfig {
+       /* The token returned with an interrupt. Set by the guest */
+       uint64_t token;
+       /* The address of the virtio ring */
+       uint64_t address;
+       /* The number of entries in the virtio_ring */
+       uint16_t num;
+
+};
+
+#define KVM_S390_VIRTIO_NOTIFY         0
+#define KVM_S390_VIRTIO_RESET          1
+#define KVM_S390_VIRTIO_SET_STATUS     2
+
+/* The alignment to use between consumer and producer parts of vring.
+ * This is pagesize for historical reasons. */
+#define KVM_S390_VIRTIO_RING_ALIGN     4096
+
+
+/* These values are supposed to be in ext_params on an interrupt */
+#define VIRTIO_PARAM_MASK              0xff
+#define VIRTIO_PARAM_VRING_INTERRUPT   0x0
+#define VIRTIO_PARAM_CONFIG_CHANGED    0x1
+#define VIRTIO_PARAM_DEV_ADD           0x2
+
+#endif