Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/****************************************************************************
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* Driver for Solarflare network controllers and boards
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* Copyright 2019 Solarflare Communications Inc.
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* Copyright 2020-2022 Xilinx Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation, incorporated herein by reference.
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*/
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#include "ef100_sriov.h"
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#include "ef100_nic.h"
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#include "ef100_rep.h"
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static int efx_ef100_pci_sriov_enable(struct efx_nic *efx, int num_vfs)
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{
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struct ef100_nic_data *nic_data = efx->nic_data;
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struct pci_dev *dev = efx->pci_dev;
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struct efx_rep *efv, *next;
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int rc, i;
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efx->vf_count = num_vfs;
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rc = pci_enable_sriov(dev, num_vfs);
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if (rc)
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goto fail1;
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if (!nic_data->grp_mae)
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return 0;
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for (i = 0; i < num_vfs; i++) {
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rc = efx_ef100_vfrep_create(efx, i);
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if (rc)
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goto fail2;
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}
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return 0;
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fail2:
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list_for_each_entry_safe(efv, next, &efx->vf_reps, list)
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efx_ef100_vfrep_destroy(efx, efv);
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pci_disable_sriov(dev);
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fail1:
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netif_err(efx, probe, efx->net_dev, "Failed to enable SRIOV VFs\n");
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efx->vf_count = 0;
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return rc;
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}
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int efx_ef100_pci_sriov_disable(struct efx_nic *efx, bool force)
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{
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struct pci_dev *dev = efx->pci_dev;
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unsigned int vfs_assigned;
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vfs_assigned = pci_vfs_assigned(dev);
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if (vfs_assigned && !force) {
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netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; "
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"please detach them before disabling SR-IOV\n");
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return -EBUSY;
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}
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efx_ef100_fini_vfreps(efx);
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if (!vfs_assigned)
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pci_disable_sriov(dev);
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return 0;
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}
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int efx_ef100_sriov_configure(struct efx_nic *efx, int num_vfs)
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{
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if (num_vfs == 0)
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return efx_ef100_pci_sriov_disable(efx, false);
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else
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return efx_ef100_pci_sriov_enable(efx, num_vfs);
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}
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