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 */
23 struct 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 */
43 struct 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 */
66 struct 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 */
79 struct vfio_device_info_cap_zpci_pfip {
80 struct vfio_info_cap_header header;
81 __u32 size;
82 __u8 pfip[];
83 };
84
85 #endif
86
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