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When doing load/store interpretation, the maximum store block length is determined by the underlying firmware, not the host kernel API. Reflect that in the associated Query PCI Function Group clp capability and let userspace decide which is appropriate to present to the guest. Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Acked-by: Alex Williamson <alex.williamson@redhat.com> Link: https://lore.kernel.org/r/20220606203325.110625-20-mjrosato@linux.ibm.com Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* VFIO Region definitions for ZPCI devices
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*
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* Copyright IBM Corp. 2020
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*
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* Author(s): Pierre Morel <pmorel@linux.ibm.com>
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* Matthew Rosato <mjrosato@linux.ibm.com>
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*/
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#ifndef _VFIO_ZDEV_H_
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#define _VFIO_ZDEV_H_
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#include <linux/types.h>
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#include <linux/vfio.h>
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/**
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* VFIO_DEVICE_INFO_CAP_ZPCI_BASE - Base PCI Function information
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*
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* This capability provides a set of descriptive information about the
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* associated PCI function.
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*/
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struct vfio_device_info_cap_zpci_base {
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struct vfio_info_cap_header header;
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__u64 start_dma; /* Start of available DMA addresses */
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__u64 end_dma; /* End of available DMA addresses */
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__u16 pchid; /* Physical Channel ID */
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__u16 vfn; /* Virtual function number */
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__u16 fmb_length; /* Measurement Block Length (in bytes) */
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__u8 pft; /* PCI Function Type */
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__u8 gid; /* PCI function group ID */
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/* End of version 1 */
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__u32 fh; /* PCI function handle */
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/* End of version 2 */
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};
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/**
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* VFIO_DEVICE_INFO_CAP_ZPCI_GROUP - Base PCI Function Group information
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*
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* This capability provides a set of descriptive information about the group of
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* PCI functions that the associated device belongs to.
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*/
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struct vfio_device_info_cap_zpci_group {
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struct vfio_info_cap_header header;
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__u64 dasm; /* DMA Address space mask */
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__u64 msi_addr; /* MSI address */
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__u64 flags;
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#define VFIO_DEVICE_INFO_ZPCI_FLAG_REFRESH 1 /* Program-specified TLB refresh */
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__u16 mui; /* Measurement Block Update Interval */
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__u16 noi; /* Maximum number of MSIs */
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__u16 maxstbl; /* Maximum Store Block Length */
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__u8 version; /* Supported PCI Version */
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/* End of version 1 */
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__u8 reserved;
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__u16 imaxstbl; /* Maximum Interpreted Store Block Length */
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/* End of version 2 */
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};
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/**
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* VFIO_DEVICE_INFO_CAP_ZPCI_UTIL - Utility String
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*
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* This capability provides the utility string for the associated device, which
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* is a device identifier string made up of EBCDID characters. 'size' specifies
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* the length of 'util_str'.
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*/
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struct vfio_device_info_cap_zpci_util {
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struct vfio_info_cap_header header;
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__u32 size;
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__u8 util_str[];
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};
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/**
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* VFIO_DEVICE_INFO_CAP_ZPCI_PFIP - PCI Function Path
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*
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* This capability provides the PCI function path string, which is an identifier
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* that describes the internal hardware path of the device. 'size' specifies
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* the length of 'pfip'.
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*/
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struct vfio_device_info_cap_zpci_pfip {
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struct vfio_info_cap_header header;
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__u32 size;
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__u8 pfip[];
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};
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#endif
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