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 __u32 ccdf_err_length; /* PCI CCDF length */ 36 /* End of version 3 */ 37 }; 38 39 /** 40 * VFIO_DEVICE_INFO_CAP_ZPCI_GROUP - Base PCI Function Group information 41 * 42 * This capability provides a set of descriptive information about the group of 43 * PCI functions that the associated device belongs to. 44 */ 45 struct vfio_device_info_cap_zpci_group { 46 struct vfio_info_cap_header header; 47 __u64 dasm; /* DMA Address space mask */ 48 __u64 msi_addr; /* MSI address */ 49 __u64 flags; 50 #define VFIO_DEVICE_INFO_ZPCI_FLAG_REFRESH 1 /* Program-specified TLB refresh */ 51 __u16 mui; /* Measurement Block Update Interval */ 52 __u16 noi; /* Maximum number of MSIs */ 53 __u16 maxstbl; /* Maximum Store Block Length */ 54 __u8 version; /* Supported PCI Version */ 55 /* End of version 1 */ 56 __u8 reserved; 57 __u16 imaxstbl; /* Maximum Interpreted Store Block Length */ 58 /* End of version 2 */ 59 }; 60 61 /** 62 * VFIO_DEVICE_INFO_CAP_ZPCI_UTIL - Utility String 63 * 64 * This capability provides the utility string for the associated device, which 65 * is a device identifier string made up of EBCDID characters. 'size' specifies 66 * the length of 'util_str'. 67 */ 68 struct vfio_device_info_cap_zpci_util { 69 struct vfio_info_cap_header header; 70 __u32 size; 71 __u8 util_str[]; 72 }; 73 74 /** 75 * VFIO_DEVICE_INFO_CAP_ZPCI_PFIP - PCI Function Path 76 * 77 * This capability provides the PCI function path string, which is an identifier 78 * that describes the internal hardware path of the device. 'size' specifies 79 * the length of 'pfip'. 80 */ 81 struct vfio_device_info_cap_zpci_pfip { 82 struct vfio_info_cap_header header; 83 __u32 size; 84 __u8 pfip[]; 85 }; 86 87 #endif 88