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