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hv: add SRIOV capability read/write entries

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Introduce SRIOV capability field for pci_vdev and add SRIOV capability
interception entries.

Tracked-On: #4433

Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yuan Liu
2020-02-20 09:05:17 +08:00
committed by wenlingz
parent 5e989f13c6
commit 14931d11e0
5 changed files with 97 additions and 0 deletions
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64
hypervisor/dm/vpci/vsriov.c Normal file
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/*
* Copyright (c) 2011 NetApp, Inc.
* Copyright (c) 2018 Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <ptdev.h>
#include <vpci.h>
/**
* @pre vdev != NULL
* @pre vdev->pdev != NULL
*/
void init_vsriov(struct pci_vdev *vdev)
{
struct pci_pdev *pdev = vdev->pdev;
vdev->sriov.capoff = pdev->sriov.capoff;
vdev->sriov.caplen = pdev->sriov.caplen;
}
/**
* @pre vdev != NULL
* @pre vdev->pdev != NULL
*/
void read_sriov_cap_reg(const struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t *val)
{
/* no need to do emulation, passthrough to physical device directly */
*val = pci_pdev_read_cfg(vdev->pdev->bdf, offset, bytes);
}
/**
* @pre vdev != NULL
* @pre vdev->pdev != NULL
*/
void write_sriov_cap_reg(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t val)
{
/* Needs to intercept VF_ENABLE and add it in next patch. */
pci_pdev_write_cfg(vdev->pdev->bdf, offset, bytes, val);
}