vfio: Introduce capability definitions for VFIO_DEVICE_GET_INFO (0c633f0b) · Commits · 戴 / test

include/uapi/linux/vfio.h

+11 −0

Original line number	Diff line number	Diff line
		@@ -201,8 +201,10 @@ struct vfio_device_info {
		#define VFIO_DEVICE_FLAGS_AMBA (1 << 3) /* vfio-amba device */
		#define VFIO_DEVICE_FLAGS_CCW (1 << 4) /* vfio-ccw device */
		#define VFIO_DEVICE_FLAGS_AP (1 << 5) /* vfio-ap device */
		#define VFIO_DEVICE_FLAGS_CAPS (1 << 7) /* Info supports caps */
		__u32 num_regions; /* Max region index + 1 */
		__u32 num_irqs; /* Max IRQ index + 1 */
		__u32 cap_offset; /* Offset within info struct of first cap */
		};
		#define VFIO_DEVICE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 7)

		@@ -218,6 +220,15 @@ struct vfio_device_info {
		#define VFIO_DEVICE_API_CCW_STRING "vfio-ccw"
		#define VFIO_DEVICE_API_AP_STRING "vfio-ap"

		/*
		* The following capabilities are unique to s390 zPCI devices. Their contents
		* are further-defined in vfio_zdev.h
		*/
		#define VFIO_DEVICE_INFO_CAP_ZPCI_BASE 1
		#define VFIO_DEVICE_INFO_CAP_ZPCI_GROUP 2
		#define VFIO_DEVICE_INFO_CAP_ZPCI_UTIL 3
		#define VFIO_DEVICE_INFO_CAP_ZPCI_PFIP 4

		/**
		* VFIO_DEVICE_GET_REGION_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 8,
		* struct vfio_region_info)

include/uapi/linux/vfio_zdev.h

0 → 100644

+78 −0

Original line number	Diff line number	Diff line
		/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
		/*
		* VFIO Region definitions for ZPCI devices
		*
		* Copyright IBM Corp. 2020
		*
		* Author(s): Pierre Morel <pmorel@linux.ibm.com>
		* Matthew Rosato <mjrosato@linux.ibm.com>
		*/

		#ifndef _VFIO_ZDEV_H_
		#define _VFIO_ZDEV_H_

		#include <linux/types.h>
		#include <linux/vfio.h>

		/**
		* VFIO_DEVICE_INFO_CAP_ZPCI_BASE - Base PCI Function information
		*
		* This capability provides a set of descriptive information about the
		* associated PCI function.
		*/
		struct vfio_device_info_cap_zpci_base {
		struct vfio_info_cap_header header;
		__u64 start_dma; /* Start of available DMA addresses */
		__u64 end_dma; /* End of available DMA addresses */
		__u16 pchid; /* Physical Channel ID */
		__u16 vfn; /* Virtual function number */
		__u16 fmb_length; /* Measurement Block Length (in bytes) */
		__u8 pft; /* PCI Function Type */
		__u8 gid; /* PCI function group ID */
		};

		/**
		* VFIO_DEVICE_INFO_CAP_ZPCI_GROUP - Base PCI Function Group information
		*
		* This capability provides a set of descriptive information about the group of
		* PCI functions that the associated device belongs to.
		*/
		struct vfio_device_info_cap_zpci_group {
		struct vfio_info_cap_header header;
		__u64 dasm; /* DMA Address space mask */
		__u64 msi_addr; /* MSI address */
		__u64 flags;
		#define VFIO_DEVICE_INFO_ZPCI_FLAG_REFRESH 1 /* Program-specified TLB refresh */
		__u16 mui; /* Measurement Block Update Interval */
		__u16 noi; /* Maximum number of MSIs */
		__u16 maxstbl; /* Maximum Store Block Length */
		__u8 version; /* Supported PCI Version */
		};

		/**
		* VFIO_DEVICE_INFO_CAP_ZPCI_UTIL - Utility String
		*
		* This capability provides the utility string for the associated device, which
		* is a device identifier string made up of EBCDID characters. 'size' specifies
		* the length of 'util_str'.
		*/
		struct vfio_device_info_cap_zpci_util {
		struct vfio_info_cap_header header;
		__u32 size;
		__u8 util_str[];
		};

		/**
		* VFIO_DEVICE_INFO_CAP_ZPCI_PFIP - PCI Function Path
		*
		* This capability provides the PCI function path string, which is an identifier
		* that describes the internal hardware path of the device. 'size' specifies
		* the length of 'pfip'.
		*/
		struct vfio_device_info_cap_zpci_pfip {
		struct vfio_info_cap_header header;
		__u32 size;
		__u8 pfip[];
		};

		#endif

Admin message