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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2017 Netronome Systems, Inc. */
#include <linux/bitfield.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
#include <linux/if_link.h>
#include <linux/if_ether.h>
#include "nfpcore/nfp_cpp.h"
#include "nfp_app.h"
#include "nfp_main.h"
#include "nfp_net_ctrl.h"
#include "nfp_net.h"
#include "nfp_net_sriov.h"
static int
nfp_net_sriov_check(struct nfp_app *app, int vf, u16 cap, const char *msg)
{
u16 cap_vf;
if (!app || !app->pf->vfcfg_tbl2)
return -EOPNOTSUPP;
cap_vf = readw(app->pf->vfcfg_tbl2 + NFP_NET_VF_CFG_MB_CAP);
if ((cap_vf & cap) != cap) {
nfp_warn(app->pf->cpp, "ndo_set_vf_%s not supported\n", msg);
return -EOPNOTSUPP;
}
if (vf < 0 || vf >= app->pf->num_vfs) {
nfp_warn(app->pf->cpp, "invalid VF id %d\n", vf);
return -EINVAL;
}
return 0;
}
static int
nfp_net_sriov_update(struct nfp_app *app, int vf, u16 update, const char *msg)
{
struct nfp_net *nn;
int ret;
/* Write update info to mailbox in VF config symbol */
writeb(vf, app->pf->vfcfg_tbl2 + NFP_NET_VF_CFG_MB_VF_NUM);
writew(update, app->pf->vfcfg_tbl2 + NFP_NET_VF_CFG_MB_UPD);
nn = list_first_entry(&app->pf->vnics, struct nfp_net, vnic_list);
/* Signal VF reconfiguration */
ret = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_VF);
if (ret)
return ret;
ret = readw(app->pf->vfcfg_tbl2 + NFP_NET_VF_CFG_MB_RET);
if (ret)
nfp_warn(app->pf->cpp,
"FW refused VF %s update with errno: %d\n", msg, ret);
return -ret;
}
int nfp_app_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
{
struct nfp_app *app = nfp_app_from_netdev(netdev);
unsigned int vf_offset;
int err;
err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_MAC, "mac");
if (err)
return err;
if (is_multicast_ether_addr(mac)) {
nfp_warn(app->pf->cpp,
"invalid Ethernet address %pM for VF id %d\n",
mac, vf);
return -EINVAL;
}
/* Write MAC to VF entry in VF config symbol */
vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ;
writel(get_unaligned_be32(mac), app->pf->vfcfg_tbl2 + vf_offset);
writew(get_unaligned_be16(mac + 4),
app->pf->vfcfg_tbl2 + vf_offset + NFP_NET_VF_CFG_MAC_LO);
err = nfp_net_sriov_update(app, vf, NFP_NET_VF_CFG_MB_UPD_MAC, "MAC");
if (!err)
nfp_info(app->pf->cpp,
"MAC %pM set on VF %d, reload the VF driver to make this change effective.\n",
mac, vf);
return err;
}
int nfp_app_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos,
__be16 vlan_proto)
{
struct nfp_app *app = nfp_app_from_netdev(netdev);
unsigned int vf_offset;
u16 vlan_tci;
int err;
err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_VLAN, "vlan");
if (err)
return err;
if (vlan_proto != htons(ETH_P_8021Q))
return -EOPNOTSUPP;
if (vlan > 4095 || qos > 7) {
nfp_warn(app->pf->cpp,
"invalid vlan id or qos for VF id %d\n", vf);
return -EINVAL;
}
/* Write VLAN tag to VF entry in VF config symbol */
vlan_tci = FIELD_PREP(NFP_NET_VF_CFG_VLAN_VID, vlan) |
FIELD_PREP(NFP_NET_VF_CFG_VLAN_QOS, qos);
vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ;
writew(vlan_tci, app->pf->vfcfg_tbl2 + vf_offset + NFP_NET_VF_CFG_VLAN);
return nfp_net_sriov_update(app, vf, NFP_NET_VF_CFG_MB_UPD_VLAN,
"vlan");
}
int nfp_app_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable)
{
struct nfp_app *app = nfp_app_from_netdev(netdev);
unsigned int vf_offset;
u8 vf_ctrl;
int err;
err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_SPOOF,
"spoofchk");
if (err)
return err;
/* Write spoof check control bit to VF entry in VF config symbol */
vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ +
NFP_NET_VF_CFG_CTRL;
vf_ctrl = readb(app->pf->vfcfg_tbl2 + vf_offset);
vf_ctrl &= ~NFP_NET_VF_CFG_CTRL_SPOOF;
vf_ctrl |= FIELD_PREP(NFP_NET_VF_CFG_CTRL_SPOOF, enable);
writeb(vf_ctrl, app->pf->vfcfg_tbl2 + vf_offset);
return nfp_net_sriov_update(app, vf, NFP_NET_VF_CFG_MB_UPD_SPOOF,
"spoofchk");
}
int nfp_app_set_vf_link_state(struct net_device *netdev, int vf,
int link_state)
{
struct nfp_app *app = nfp_app_from_netdev(netdev);
unsigned int vf_offset;
u8 vf_ctrl;
int err;
err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_LINK_STATE,
"link_state");
if (err)
return err;
switch (link_state) {
case IFLA_VF_LINK_STATE_AUTO:
case IFLA_VF_LINK_STATE_ENABLE:
case IFLA_VF_LINK_STATE_DISABLE:
break;
default:
return -EINVAL;
}
/* Write link state to VF entry in VF config symbol */
vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ +
NFP_NET_VF_CFG_CTRL;
vf_ctrl = readb(app->pf->vfcfg_tbl2 + vf_offset);
vf_ctrl &= ~NFP_NET_VF_CFG_CTRL_LINK_STATE;
vf_ctrl |= FIELD_PREP(NFP_NET_VF_CFG_CTRL_LINK_STATE, link_state);
writeb(vf_ctrl, app->pf->vfcfg_tbl2 + vf_offset);
return nfp_net_sriov_update(app, vf, NFP_NET_VF_CFG_MB_UPD_LINK_STATE,
"link state");
}
int nfp_app_get_vf_config(struct net_device *netdev, int vf,
struct ifla_vf_info *ivi)
{
struct nfp_app *app = nfp_app_from_netdev(netdev);
unsigned int vf_offset;
u16 vlan_tci;
u32 mac_hi;
u16 mac_lo;
u8 flags;
int err;
err = nfp_net_sriov_check(app, vf, 0, "");
if (err)
return err;
vf_offset = NFP_NET_VF_CFG_MB_SZ + vf * NFP_NET_VF_CFG_SZ;
mac_hi = readl(app->pf->vfcfg_tbl2 + vf_offset);
mac_lo = readw(app->pf->vfcfg_tbl2 + vf_offset + NFP_NET_VF_CFG_MAC_LO);
flags = readb(app->pf->vfcfg_tbl2 + vf_offset + NFP_NET_VF_CFG_CTRL);
vlan_tci = readw(app->pf->vfcfg_tbl2 + vf_offset + NFP_NET_VF_CFG_VLAN);
memset(ivi, 0, sizeof(*ivi));
ivi->vf = vf;
put_unaligned_be32(mac_hi, &ivi->mac[0]);
put_unaligned_be16(mac_lo, &ivi->mac[4]);
ivi->vlan = FIELD_GET(NFP_NET_VF_CFG_VLAN_VID, vlan_tci);
ivi->qos = FIELD_GET(NFP_NET_VF_CFG_VLAN_QOS, vlan_tci);
ivi->spoofchk = FIELD_GET(NFP_NET_VF_CFG_CTRL_SPOOF, flags);
ivi->linkstate = FIELD_GET(NFP_NET_VF_CFG_CTRL_LINK_STATE, flags);
return 0;
}
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