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 }; 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 */ 40 struct 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 */ 59 struct 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 */ 72 struct vfio_device_info_cap_zpci_pfip { 73 struct vfio_info_cap_header header; 74 __u32 size; 75 __u8 pfip[]; 76 }; 77 78 #endif 79