312 lines
8.7 KiB
C
312 lines
8.7 KiB
C
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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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/* Copyright (C) 2017-2019 Netronome Systems, Inc. */
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#include <linux/bitfield.h>
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#include <linux/errno.h>
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#include <linux/etherdevice.h>
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#include <linux/if_link.h>
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#include <linux/if_ether.h>
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#include "nfpcore/nfp_cpp.h"
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#include "nfp_app.h"
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#include "nfp_main.h"
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#include "nfp_net_ctrl.h"
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#include "nfp_net.h"
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#include "nfp_net_sriov.h"
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static int
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nfp_net_sriov_check(struct nfp_app *app, int vf, u16 cap, const char *msg, bool warn)
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{
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u16 cap_vf;
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if (!app || !app->pf->vfcfg_tbl2)
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return -EOPNOTSUPP;
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cap_vf = readw(app->pf->vfcfg_tbl2 + NFP_NET_VF_CFG_MB_CAP);
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if ((cap_vf & cap) != cap) {
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if (warn)
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nfp_warn(app->pf->cpp, "ndo_set_vf_%s not supported\n", msg);
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return -EOPNOTSUPP;
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}
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if (vf < 0 || vf >= app->pf->num_vfs) {
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if (warn)
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nfp_warn(app->pf->cpp, "invalid VF id %d\n", vf);
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return -EINVAL;
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}
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return 0;
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}
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static int
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nfp_net_sriov_update(struct nfp_app *app, int vf, u16 update, const char *msg)
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{
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struct nfp_net *nn;
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int ret;
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/* Write update info to mailbox in VF config symbol */
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writeb(vf, app->pf->vfcfg_tbl2 + NFP_NET_VF_CFG_MB_VF_NUM);
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writew(update, app->pf->vfcfg_tbl2 + NFP_NET_VF_CFG_MB_UPD);
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nn = list_first_entry(&app->pf->vnics, struct nfp_net, vnic_list);
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/* Signal VF reconfiguration */
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ret = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_VF);
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if (ret)
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return ret;
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ret = readw(app->pf->vfcfg_tbl2 + NFP_NET_VF_CFG_MB_RET);
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if (ret)
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nfp_warn(app->pf->cpp,
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"FW refused VF %s update with errno: %d\n", msg, ret);
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return -ret;
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}
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int nfp_app_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
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{
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struct nfp_app *app = nfp_app_from_netdev(netdev);
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unsigned int vf_offset;
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int err;
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err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_MAC, "mac", true);
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if (err)
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return err;
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if (is_multicast_ether_addr(mac)) {
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nfp_warn(app->pf->cpp,
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"invalid Ethernet address %pM for VF id %d\n",
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mac, vf);
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return -EINVAL;
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}
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/* Write MAC to VF entry in VF config symbol */
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vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ;
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writel(get_unaligned_be32(mac), app->pf->vfcfg_tbl2 + vf_offset);
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writew(get_unaligned_be16(mac + 4),
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app->pf->vfcfg_tbl2 + vf_offset + NFP_NET_VF_CFG_MAC_LO);
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err = nfp_net_sriov_update(app, vf, NFP_NET_VF_CFG_MB_UPD_MAC, "MAC");
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if (!err)
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nfp_info(app->pf->cpp,
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"MAC %pM set on VF %d, reload the VF driver to make this change effective.\n",
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mac, vf);
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return err;
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}
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int nfp_app_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos,
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__be16 vlan_proto)
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{
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struct nfp_app *app = nfp_app_from_netdev(netdev);
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u16 update = NFP_NET_VF_CFG_MB_UPD_VLAN;
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bool is_proto_sup = true;
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unsigned int vf_offset;
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u32 vlan_tag;
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int err;
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err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_VLAN, "vlan", true);
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if (err)
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return err;
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if (!eth_type_vlan(vlan_proto))
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return -EOPNOTSUPP;
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if (vlan > 4095 || qos > 7) {
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nfp_warn(app->pf->cpp,
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"invalid vlan id or qos for VF id %d\n", vf);
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return -EINVAL;
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}
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/* Check if fw supports or not */
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err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_VLAN_PROTO, "vlan_proto", true);
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if (err)
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is_proto_sup = false;
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if (vlan_proto != htons(ETH_P_8021Q)) {
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if (!is_proto_sup)
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return -EOPNOTSUPP;
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update |= NFP_NET_VF_CFG_MB_UPD_VLAN_PROTO;
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}
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/* Write VLAN tag to VF entry in VF config symbol */
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vlan_tag = FIELD_PREP(NFP_NET_VF_CFG_VLAN_VID, vlan) |
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FIELD_PREP(NFP_NET_VF_CFG_VLAN_QOS, qos);
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/* vlan_tag of 0 means that the configuration should be cleared and in
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* such circumstances setting the TPID has no meaning when
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* configuring firmware.
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*/
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if (vlan_tag && is_proto_sup)
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vlan_tag |= FIELD_PREP(NFP_NET_VF_CFG_VLAN_PROT, ntohs(vlan_proto));
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vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ;
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writel(vlan_tag, app->pf->vfcfg_tbl2 + vf_offset + NFP_NET_VF_CFG_VLAN);
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return nfp_net_sriov_update(app, vf, update, "vlan");
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}
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int nfp_app_set_vf_rate(struct net_device *netdev, int vf,
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int min_tx_rate, int max_tx_rate)
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{
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struct nfp_app *app = nfp_app_from_netdev(netdev);
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u32 vf_offset, ratevalue;
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int err;
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err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_RATE, "rate", true);
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if (err)
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return err;
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if (max_tx_rate >= NFP_NET_VF_RATE_MAX ||
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min_tx_rate >= NFP_NET_VF_RATE_MAX) {
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nfp_warn(app->cpp, "tx-rate exceeds %d.\n",
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NFP_NET_VF_RATE_MAX);
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return -EINVAL;
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}
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vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ;
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ratevalue = FIELD_PREP(NFP_NET_VF_CFG_MAX_RATE,
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max_tx_rate ? max_tx_rate :
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NFP_NET_VF_RATE_MAX) |
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FIELD_PREP(NFP_NET_VF_CFG_MIN_RATE, min_tx_rate);
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writel(ratevalue,
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app->pf->vfcfg_tbl2 + vf_offset + NFP_NET_VF_CFG_RATE);
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return nfp_net_sriov_update(app, vf, NFP_NET_VF_CFG_MB_UPD_RATE,
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"rate");
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}
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int nfp_app_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable)
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{
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struct nfp_app *app = nfp_app_from_netdev(netdev);
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unsigned int vf_offset;
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u8 vf_ctrl;
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int err;
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err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_SPOOF,
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"spoofchk", true);
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if (err)
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return err;
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/* Write spoof check control bit to VF entry in VF config symbol */
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vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ +
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NFP_NET_VF_CFG_CTRL;
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vf_ctrl = readb(app->pf->vfcfg_tbl2 + vf_offset);
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vf_ctrl &= ~NFP_NET_VF_CFG_CTRL_SPOOF;
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vf_ctrl |= FIELD_PREP(NFP_NET_VF_CFG_CTRL_SPOOF, enable);
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writeb(vf_ctrl, app->pf->vfcfg_tbl2 + vf_offset);
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return nfp_net_sriov_update(app, vf, NFP_NET_VF_CFG_MB_UPD_SPOOF,
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"spoofchk");
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}
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int nfp_app_set_vf_trust(struct net_device *netdev, int vf, bool enable)
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{
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struct nfp_app *app = nfp_app_from_netdev(netdev);
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unsigned int vf_offset;
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u8 vf_ctrl;
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int err;
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err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_TRUST,
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"trust", true);
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if (err)
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return err;
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/* Write trust control bit to VF entry in VF config symbol */
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vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ +
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NFP_NET_VF_CFG_CTRL;
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vf_ctrl = readb(app->pf->vfcfg_tbl2 + vf_offset);
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vf_ctrl &= ~NFP_NET_VF_CFG_CTRL_TRUST;
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vf_ctrl |= FIELD_PREP(NFP_NET_VF_CFG_CTRL_TRUST, enable);
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writeb(vf_ctrl, app->pf->vfcfg_tbl2 + vf_offset);
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return nfp_net_sriov_update(app, vf, NFP_NET_VF_CFG_MB_UPD_TRUST,
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"trust");
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}
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int nfp_app_set_vf_link_state(struct net_device *netdev, int vf,
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int link_state)
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{
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struct nfp_app *app = nfp_app_from_netdev(netdev);
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unsigned int vf_offset;
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u8 vf_ctrl;
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int err;
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err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_LINK_STATE,
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"link_state", true);
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if (err)
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return err;
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switch (link_state) {
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case IFLA_VF_LINK_STATE_AUTO:
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case IFLA_VF_LINK_STATE_ENABLE:
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case IFLA_VF_LINK_STATE_DISABLE:
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break;
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default:
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return -EINVAL;
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}
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/* Write link state to VF entry in VF config symbol */
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vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ +
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NFP_NET_VF_CFG_CTRL;
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vf_ctrl = readb(app->pf->vfcfg_tbl2 + vf_offset);
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vf_ctrl &= ~NFP_NET_VF_CFG_CTRL_LINK_STATE;
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vf_ctrl |= FIELD_PREP(NFP_NET_VF_CFG_CTRL_LINK_STATE, link_state);
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writeb(vf_ctrl, app->pf->vfcfg_tbl2 + vf_offset);
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return nfp_net_sriov_update(app, vf, NFP_NET_VF_CFG_MB_UPD_LINK_STATE,
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"link state");
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}
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int nfp_app_get_vf_config(struct net_device *netdev, int vf,
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struct ifla_vf_info *ivi)
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{
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struct nfp_app *app = nfp_app_from_netdev(netdev);
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u32 vf_offset, mac_hi, rate;
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u32 vlan_tag;
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u16 mac_lo;
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u8 flags;
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int err;
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err = nfp_net_sriov_check(app, vf, 0, "", true);
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if (err)
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return err;
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vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ;
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mac_hi = readl(app->pf->vfcfg_tbl2 + vf_offset);
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mac_lo = readw(app->pf->vfcfg_tbl2 + vf_offset + NFP_NET_VF_CFG_MAC_LO);
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flags = readb(app->pf->vfcfg_tbl2 + vf_offset + NFP_NET_VF_CFG_CTRL);
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vlan_tag = readl(app->pf->vfcfg_tbl2 + vf_offset + NFP_NET_VF_CFG_VLAN);
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memset(ivi, 0, sizeof(*ivi));
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ivi->vf = vf;
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put_unaligned_be32(mac_hi, &ivi->mac[0]);
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put_unaligned_be16(mac_lo, &ivi->mac[4]);
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ivi->vlan = FIELD_GET(NFP_NET_VF_CFG_VLAN_VID, vlan_tag);
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ivi->qos = FIELD_GET(NFP_NET_VF_CFG_VLAN_QOS, vlan_tag);
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if (!nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_VLAN_PROTO, "vlan_proto", false))
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ivi->vlan_proto = htons(FIELD_GET(NFP_NET_VF_CFG_VLAN_PROT, vlan_tag));
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ivi->spoofchk = FIELD_GET(NFP_NET_VF_CFG_CTRL_SPOOF, flags);
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ivi->trusted = FIELD_GET(NFP_NET_VF_CFG_CTRL_TRUST, flags);
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ivi->linkstate = FIELD_GET(NFP_NET_VF_CFG_CTRL_LINK_STATE, flags);
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err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_RATE, "rate", false);
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if (!err) {
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rate = readl(app->pf->vfcfg_tbl2 + vf_offset +
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NFP_NET_VF_CFG_RATE);
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ivi->max_tx_rate = FIELD_GET(NFP_NET_VF_CFG_MAX_RATE, rate);
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ivi->min_tx_rate = FIELD_GET(NFP_NET_VF_CFG_MIN_RATE, rate);
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if (ivi->max_tx_rate == NFP_NET_VF_RATE_MAX)
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ivi->max_tx_rate = 0;
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if (ivi->min_tx_rate == NFP_NET_VF_RATE_MAX)
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ivi->min_tx_rate = 0;
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}
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return 0;
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}
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