Re: [Qemu-devel] [PATCH v3 1/5] vfio: vfio_iommu_type1: linux header place holder

["Michael S. Tsirkin" <mst@redhat.com>]

On Fri, Sep 06, 2019 at 08:16:25PM -0400, Matthew Rosato wrote:
> From: Pierre Morel <pmorel@linux.ibm.com>
> 
> This should be copied from Linux kernel UAPI includes.
> The version used here is Linux 5.3.0
> 
> We define a new device region in vfio.h to be able to
> get the ZPCI CLP information by reading this region from
> userland.
> 
> We create a new file, vfio_zdev.h to define the structure
> of the new region we defined in vfio.h
> 
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>


You should add these in scripts/update-linux-headers.sh ,
then run that script.

> ---
>  linux-headers/linux/vfio.h      |  7 ++++---
>  linux-headers/linux/vfio_zdev.h | 35 +++++++++++++++++++++++++++++++++++
>  2 files changed, 39 insertions(+), 3 deletions(-)
>  create mode 100644 linux-headers/linux/vfio_zdev.h
> 
> diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
> index 24f5051..8328c87 100644
> --- a/linux-headers/linux/vfio.h
> +++ b/linux-headers/linux/vfio.h
> @@ -9,8 +9,8 @@
>   * it under the terms of the GNU General Public License version 2 as
>   * published by the Free Software Foundation.
>   */
> -#ifndef VFIO_H
> -#define VFIO_H
> +#ifndef _UAPIVFIO_H
> +#define _UAPIVFIO_H
>  
>  #include <linux/types.h>
>  #include <linux/ioctl.h>
> @@ -371,6 +371,7 @@ struct vfio_region_gfx_edid {
>   * to do TLB invalidation on a GPU.
>   */
>  #define VFIO_REGION_SUBTYPE_IBM_NVLINK2_ATSD	(1)
> +#define VFIO_REGION_SUBTYPE_ZDEV_CLP		(2)
>  
>  /*
>   * The MSIX mappable capability informs that MSIX data of a BAR can be mmapped
> @@ -914,4 +915,4 @@ struct vfio_iommu_spapr_tce_remove {
>  
>  /* ***************************************************************** */
>  
> -#endif /* VFIO_H */
> +#endif /* _UAPIVFIO_H */
> diff --git a/linux-headers/linux/vfio_zdev.h b/linux-headers/linux/vfio_zdev.h
> new file mode 100644
> index 0000000..2b912a5
> --- /dev/null
> +++ b/linux-headers/linux/vfio_zdev.h
> @@ -0,0 +1,35 @@
> +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> +/*
> + * Region definition for ZPCI devices
> + *
> + * Copyright IBM Corp. 2019
> + *
> + * Author(s): Pierre Morel <pmorel@linux.ibm.com>
> + */
> +
> +#ifndef _VFIO_ZDEV_H_
> +#define _VFIO_ZDEV_H_
> +
> +#include <linux/types.h>
> +
> +/**
> + * struct vfio_region_zpci_info - ZPCI information.
> + *
> + */
> +struct vfio_region_zpci_info {
> +	__u64 dasm;
> +	__u64 start_dma;
> +	__u64 end_dma;
> +	__u64 msi_addr;
> +	__u64 flags;
> +	__u16 pchid;
> +	__u16 mui;
> +	__u16 noi;
> +	__u16 maxstbl;
> +	__u8 version;
> +	__u8 gid;
> +#define VFIO_PCI_ZDEV_FLAGS_REFRESH 1
> +	__u8 util_str[];
> +} __attribute__ ((__packed__));
> +
> +#endif
> -- 
> 1.8.3.1