linux-stable/include/uapi/linux/vfio_zdev.h
Matthew Rosato 0c633f0be1 vfio: Introduce capability definitions for VFIO_DEVICE_GET_INFO
Allow the VFIO_DEVICE_GET_INFO ioctl to include a capability chain.
Add a flag indicating capability chain support, and introduce the
definitions for the first set of capabilities which are specified to
s390 zPCI devices.

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2020-10-07 14:23:44 -06:00

78 lines
2.3 KiB
C

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* VFIO Region definitions for ZPCI devices
*
* Copyright IBM Corp. 2020
*
* Author(s): Pierre Morel <pmorel@linux.ibm.com>
* Matthew Rosato <mjrosato@linux.ibm.com>
*/
#ifndef _VFIO_ZDEV_H_
#define _VFIO_ZDEV_H_
#include <linux/types.h>
#include <linux/vfio.h>
/**
* VFIO_DEVICE_INFO_CAP_ZPCI_BASE - Base PCI Function information
*
* This capability provides a set of descriptive information about the
* associated PCI function.
*/
struct vfio_device_info_cap_zpci_base {
struct vfio_info_cap_header header;
__u64 start_dma; /* Start of available DMA addresses */
__u64 end_dma; /* End of available DMA addresses */
__u16 pchid; /* Physical Channel ID */
__u16 vfn; /* Virtual function number */
__u16 fmb_length; /* Measurement Block Length (in bytes) */
__u8 pft; /* PCI Function Type */
__u8 gid; /* PCI function group ID */
};
/**
* VFIO_DEVICE_INFO_CAP_ZPCI_GROUP - Base PCI Function Group information
*
* This capability provides a set of descriptive information about the group of
* PCI functions that the associated device belongs to.
*/
struct vfio_device_info_cap_zpci_group {
struct vfio_info_cap_header header;
__u64 dasm; /* DMA Address space mask */
__u64 msi_addr; /* MSI address */
__u64 flags;
#define VFIO_DEVICE_INFO_ZPCI_FLAG_REFRESH 1 /* Program-specified TLB refresh */
__u16 mui; /* Measurement Block Update Interval */
__u16 noi; /* Maximum number of MSIs */
__u16 maxstbl; /* Maximum Store Block Length */
__u8 version; /* Supported PCI Version */
};
/**
* VFIO_DEVICE_INFO_CAP_ZPCI_UTIL - Utility String
*
* This capability provides the utility string for the associated device, which
* is a device identifier string made up of EBCDID characters. 'size' specifies
* the length of 'util_str'.
*/
struct vfio_device_info_cap_zpci_util {
struct vfio_info_cap_header header;
__u32 size;
__u8 util_str[];
};
/**
* VFIO_DEVICE_INFO_CAP_ZPCI_PFIP - PCI Function Path
*
* This capability provides the PCI function path string, which is an identifier
* that describes the internal hardware path of the device. 'size' specifies
* the length of 'pfip'.
*/
struct vfio_device_info_cap_zpci_pfip {
struct vfio_info_cap_header header;
__u32 size;
__u8 pfip[];
};
#endif