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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2008-08-01 14:42:05 -0400
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-08-01 14:42:05 -0400
commitc6557e7f2b6ae76a44653d38f835174074c42e05 (patch)
treeda619a76b309cb1cd259d082af768a83cfcd6d52 /arch/s390/include/asm/kvm_virtio.h
parentab4227cb2d936886069ef1056c02500d05beb15d (diff)
[S390] move include/asm-s390 to arch/s390/include/asm
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/kvm_virtio.h')
-rw-r--r--arch/s390/include/asm/kvm_virtio.h63
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/s390/include/asm/kvm_virtio.h b/arch/s390/include/asm/kvm_virtio.h
new file mode 100644
index 000000000000..146100224def
--- /dev/null
+++ b/arch/s390/include/asm/kvm_virtio.h
@@ -0,0 +1,63 @@
1/*
2 * kvm_virtio.h - definition for virtio for kvm on s390
3 *
4 * Copyright IBM Corp. 2008
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License (version 2 only)
8 * as published by the Free Software Foundation.
9 *
10 * Author(s): Christian Borntraeger <borntraeger@de.ibm.com>
11 */
12
13#ifndef __KVM_S390_VIRTIO_H
14#define __KVM_S390_VIRTIO_H
15
16#include <linux/types.h>
17
18struct kvm_device_desc {
19 /* The device type: console, network, disk etc. Type 0 terminates. */
20 __u8 type;
21 /* The number of virtqueues (first in config array) */
22 __u8 num_vq;
23 /*
24 * The number of bytes of feature bits. Multiply by 2: one for host
25 * features and one for guest acknowledgements.
26 */
27 __u8 feature_len;
28 /* The number of bytes of the config array after virtqueues. */
29 __u8 config_len;
30 /* A status byte, written by the Guest. */
31 __u8 status;
32 __u8 config[0];
33};
34
35/*
36 * This is how we expect the device configuration field for a virtqueue
37 * to be laid out in config space.
38 */
39struct kvm_vqconfig {
40 /* The token returned with an interrupt. Set by the guest */
41 __u64 token;
42 /* The address of the virtio ring */
43 __u64 address;
44 /* The number of entries in the virtio_ring */
45 __u16 num;
46
47};
48
49#define KVM_S390_VIRTIO_NOTIFY 0
50#define KVM_S390_VIRTIO_RESET 1
51#define KVM_S390_VIRTIO_SET_STATUS 2
52
53#ifdef __KERNEL__
54/* early virtio console setup */
55#ifdef CONFIG_VIRTIO_CONSOLE
56extern void s390_virtio_console_init(void);
57#else
58static inline void s390_virtio_console_init(void)
59{
60}
61#endif /* CONFIG_VIRTIO_CONSOLE */
62#endif /* __KERNEL__ */
63#endif