LXR qemu/linux-headers/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        /* End of version 1 */
  33        __u32 fh;               /* PCI function handle */
  34        /* End of version 2 */
  35};
  36
  37/**
  38 * VFIO_DEVICE_INFO_CAP_ZPCI_GROUP - Base PCI Function Group information
  39 *
  40 * This capability provides a set of descriptive information about the group of
  41 * PCI functions that the associated device belongs to.
  42 */
  43struct vfio_device_info_cap_zpci_group {
  44        struct vfio_info_cap_header header;
  45        __u64 dasm;             /* DMA Address space mask */
  46        __u64 msi_addr;         /* MSI address */
  47        __u64 flags;
  48#define VFIO_DEVICE_INFO_ZPCI_FLAG_REFRESH 1 /* Program-specified TLB refresh */
  49        __u16 mui;              /* Measurement Block Update Interval */
  50        __u16 noi;              /* Maximum number of MSIs */
  51        __u16 maxstbl;          /* Maximum Store Block Length */
  52        __u8 version;           /* Supported PCI Version */
  53        /* End of version 1 */
  54        __u8 reserved;
  55        __u16 imaxstbl;         /* Maximum Interpreted Store Block Length */
  56        /* End of version 2 */
  57};
  58
  59/**
  60 * VFIO_DEVICE_INFO_CAP_ZPCI_UTIL - Utility String
  61 *
  62 * This capability provides the utility string for the associated device, which
  63 * is a device identifier string made up of EBCDID characters.  'size' specifies
  64 * the length of 'util_str'.
  65 */
  66struct vfio_device_info_cap_zpci_util {
  67        struct vfio_info_cap_header header;
  68        __u32 size;
  69        __u8 util_str[];
  70};
  71
  72/**
  73 * VFIO_DEVICE_INFO_CAP_ZPCI_PFIP - PCI Function Path
  74 *
  75 * This capability provides the PCI function path string, which is an identifier
  76 * that describes the internal hardware path of the device. 'size' specifies
  77 * the length of 'pfip'.
  78 */
  79struct vfio_device_info_cap_zpci_pfip {
  80        struct vfio_info_cap_header header;
  81        __u32 size;
  82        __u8 pfip[];
  83};
  84
  85#endif
  86