LXR linux/include/uapi/linux/vfio

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2/*
   3 * VFIO Region definitions for ZPCI devices
   4 *
   5 * Copyright IBM Corp. 2020
   6 *
   7 * Author(s): Pierre Morel <pmorel@linux.ibm.com>
   8 *            Matthew Rosato <mjrosato@linux.ibm.com>
   9 */
  10
  11#ifndef _VFIO_ZDEV_H_
  12#define _VFIO_ZDEV_H_
  13
  14#include <linux/types.h>
  15#include <linux/vfio.h>
  16
  17/**
  18 * VFIO_DEVICE_INFO_CAP_ZPCI_BASE - Base PCI Function information
  19 *
  20 * This capability provides a set of descriptive information about the
  21 * associated PCI function.
  22 */
  23struct vfio_device_info_cap_zpci_base {
  24        struct vfio_info_cap_header header;
  25        __u64 start_dma;        /* Start of available DMA addresses */
  26        __u64 end_dma;          /* End of available DMA addresses */
  27        __u16 pchid;            /* Physical Channel ID */
  28        __u16 vfn;              /* Virtual function number */
  29        __u16 fmb_length;       /* Measurement Block Length (in bytes) */
  30        __u8 pft;               /* PCI Function Type */
  31        __u8 gid;               /* PCI function group ID */
  32};
  33
  34/**
  35 * VFIO_DEVICE_INFO_CAP_ZPCI_GROUP - Base PCI Function Group information
  36 *
  37 * This capability provides a set of descriptive information about the group of
  38 * PCI functions that the associated device belongs to.
  39 */
  40struct vfio_device_info_cap_zpci_group {
  41        struct vfio_info_cap_header header;
  42        __u64 dasm;             /* DMA Address space mask */
  43        __u64 msi_addr;         /* MSI address */
  44        __u64 flags;
  45#define VFIO_DEVICE_INFO_ZPCI_FLAG_REFRESH 1 /* Program-specified TLB refresh */
  46        __u16 mui;              /* Measurement Block Update Interval */
  47        __u16 noi;              /* Maximum number of MSIs */
  48        __u16 maxstbl;          /* Maximum Store Block Length */
  49        __u8 version;           /* Supported PCI Version */
  50};
  51
  52/**
  53 * VFIO_DEVICE_INFO_CAP_ZPCI_UTIL - Utility String
  54 *
  55 * This capability provides the utility string for the associated device, which
  56 * is a device identifier string made up of EBCDID characters.  'size' specifies
  57 * the length of 'util_str'.
  58 */
  59struct vfio_device_info_cap_zpci_util {
  60        struct vfio_info_cap_header header;
  61        __u32 size;
  62        __u8 util_str[];
  63};
  64
  65/**
  66 * VFIO_DEVICE_INFO_CAP_ZPCI_PFIP - PCI Function Path
  67 *
  68 * This capability provides the PCI function path string, which is an identifier
  69 * that describes the internal hardware path of the device. 'size' specifies
  70 * the length of 'pfip'.
  71 */
  72struct vfio_device_info_cap_zpci_pfip {
  73        struct vfio_info_cap_header header;
  74        __u32 size;
  75        __u8 pfip[];
  76};
  77
  78#endif
  79