From c6557e7f2b6ae76a44653d38f835174074c42e05 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Fri, 1 Aug 2008 20:42:05 +0200 Subject: [S390] move include/asm-s390 to arch/s390/include/asm Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/kvm_virtio.h | 63 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 arch/s390/include/asm/kvm_virtio.h (limited to 'arch/s390/include/asm/kvm_virtio.h') diff --git a/arch/s390/include/asm/kvm_virtio.h b/arch/s390/include/asm/kvm_virtio.h new file mode 100644 index 00000000000..146100224de --- /dev/null +++ b/arch/s390/include/asm/kvm_virtio.h @@ -0,0 +1,63 @@ +/* + * kvm_virtio.h - 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 + */ + +#ifndef __KVM_S390_VIRTIO_H +#define __KVM_S390_VIRTIO_H + +#include + +struct kvm_device_desc { + /* The device type: console, network, disk etc. Type 0 terminates. */ + __u8 type; + /* The number of virtqueues (first in config array) */ + __u8 num_vq; + /* + * The number of bytes of feature bits. Multiply by 2: one for host + * features and one for guest acknowledgements. + */ + __u8 feature_len; + /* The number of bytes of the config array after virtqueues. */ + __u8 config_len; + /* A status byte, written by the Guest. */ + __u8 status; + __u8 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 */ + __u64 token; + /* The address of the virtio ring */ + __u64 address; + /* The number of entries in the virtio_ring */ + __u16 num; + +}; + +#define KVM_S390_VIRTIO_NOTIFY 0 +#define KVM_S390_VIRTIO_RESET 1 +#define KVM_S390_VIRTIO_SET_STATUS 2 + +#ifdef __KERNEL__ +/* early virtio console setup */ +#ifdef CONFIG_VIRTIO_CONSOLE +extern void s390_virtio_console_init(void); +#else +static inline void s390_virtio_console_init(void) +{ +} +#endif /* CONFIG_VIRTIO_CONSOLE */ +#endif /* __KERNEL__ */ +#endif -- cgit v1.2.3