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[v3,16/17] standard-headers: add s390 virtio headers

Message ID 1424122283-12521-17-git-send-email-mst@redhat.com
State New
Headers show

Commit Message

Michael S. Tsirkin Feb. 16, 2015, 9:36 p.m. UTC 
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 include/standard-headers/asm-s390/kvm_virtio.h | 64 ++++++++++++++++++++++++++
 include/standard-headers/asm-s390/virtio-ccw.h | 21 +++++++++
 2 files changed, 85 insertions(+)
 create mode 100644 include/standard-headers/asm-s390/kvm_virtio.h
 create mode 100644 include/standard-headers/asm-s390/virtio-ccw.h
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Patch

diff --git a/include/standard-headers/asm-s390/kvm_virtio.h b/include/standard-headers/asm-s390/kvm_virtio.h
new file mode 100644
index 0000000..daad324
--- /dev/null
+++ b/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
diff --git a/include/standard-headers/asm-s390/virtio-ccw.h b/include/standard-headers/asm-s390/virtio-ccw.h
new file mode 100644
index 0000000..a9a4ebf
--- /dev/null
+++ b/include/standard-headers/asm-s390/virtio-ccw.h
@@ -0,0 +1,21 @@ 
+/*
+ * Definitions for virtio-ccw devices.
+ *
+ * Copyright IBM Corp. 2013
+ *
+ * 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): Cornelia Huck <cornelia.huck@de.ibm.com>
+ */
+#ifndef __KVM_VIRTIO_CCW_H
+#define __KVM_VIRTIO_CCW_H
+
+/* Alignment of vring buffers. */
+#define KVM_VIRTIO_CCW_RING_ALIGN 4096
+
+/* Subcode for diagnose 500 (virtio hypercall). */
+#define KVM_S390_VIRTIO_CCW_NOTIFY 3
+
+#endif