1 files changed, 943 insertions, 0 deletions

diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
new file mode 100644
index 000000000000..15876a6e7598
--- /dev/null
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
@@ -0,0 +1,943 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/* Copyright 2017-2019 NXP */
+
+#include <linux/module.h>
+#include <linux/of_mdio.h>
+#include <linux/of_net.h>
+#include "enetc_pf.h"
+
+#define ENETC_DRV_VER_MAJ 1
+#define ENETC_DRV_VER_MIN 0
+
+#define ENETC_DRV_VER_STR __stringify(ENETC_DRV_VER_MAJ) "." \
+			  __stringify(ENETC_DRV_VER_MIN)
+static const char enetc_drv_ver[] = ENETC_DRV_VER_STR;
+#define ENETC_DRV_NAME_STR "ENETC PF driver"
+static const char enetc_drv_name[] = ENETC_DRV_NAME_STR;
+
+static void enetc_pf_get_primary_mac_addr(struct enetc_hw *hw, int si, u8 *addr)
+{
+	u32 upper = __raw_readl(hw->port + ENETC_PSIPMAR0(si));
+	u16 lower = __raw_readw(hw->port + ENETC_PSIPMAR1(si));
+
+	*(u32 *)addr = upper;
+	*(u16 *)(addr + 4) = lower;
+}
+
+static void enetc_pf_set_primary_mac_addr(struct enetc_hw *hw, int si,
+					  const u8 *addr)
+{
+	u32 upper = *(const u32 *)addr;
+	u16 lower = *(const u16 *)(addr + 4);
+
+	__raw_writel(upper, hw->port + ENETC_PSIPMAR0(si));
+	__raw_writew(lower, hw->port + ENETC_PSIPMAR1(si));
+}
+
+static int enetc_pf_set_mac_addr(struct net_device *ndev, void *addr)
+{
+	struct enetc_ndev_priv *priv = netdev_priv(ndev);
+	struct sockaddr *saddr = addr;
+
+	if (!is_valid_ether_addr(saddr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	memcpy(ndev->dev_addr, saddr->sa_data, ndev->addr_len);
+	enetc_pf_set_primary_mac_addr(&priv->si->hw, 0, saddr->sa_data);
+
+	return 0;
+}
+
+static void enetc_set_vlan_promisc(struct enetc_hw *hw, char si_map)
+{
+	u32 val = enetc_port_rd(hw, ENETC_PSIPVMR);
+
+	val &= ~ENETC_PSIPVMR_SET_VP(ENETC_VLAN_PROMISC_MAP_ALL);
+	enetc_port_wr(hw, ENETC_PSIPVMR, ENETC_PSIPVMR_SET_VP(si_map) | val);
+}
+
+static bool enetc_si_vlan_promisc_is_on(struct enetc_pf *pf, int si_idx)
+{
+	return pf->vlan_promisc_simap & BIT(si_idx);
+}
+
+static bool enetc_vlan_filter_is_on(struct enetc_pf *pf)
+{
+	int i;
+
+	for_each_set_bit(i, pf->active_vlans, VLAN_N_VID)
+		return true;
+
+	return false;
+}
+
+static void enetc_enable_si_vlan_promisc(struct enetc_pf *pf, int si_idx)
+{
+	pf->vlan_promisc_simap |= BIT(si_idx);
+	enetc_set_vlan_promisc(&pf->si->hw, pf->vlan_promisc_simap);
+}
+
+static void enetc_disable_si_vlan_promisc(struct enetc_pf *pf, int si_idx)
+{
+	pf->vlan_promisc_simap &= ~BIT(si_idx);
+	enetc_set_vlan_promisc(&pf->si->hw, pf->vlan_promisc_simap);
+}
+
+static void enetc_set_isol_vlan(struct enetc_hw *hw, int si, u16 vlan, u8 qos)
+{
+	u32 val = 0;
+
+	if (vlan)
+		val = ENETC_PSIVLAN_EN | ENETC_PSIVLAN_SET_QOS(qos) | vlan;
+
+	enetc_port_wr(hw, ENETC_PSIVLANR(si), val);
+}
+
+static int enetc_mac_addr_hash_idx(const u8 *addr)
+{
+	u64 fold = __swab64(ether_addr_to_u64(addr)) >> 16;
+	u64 mask = 0;
+	int res = 0;
+	int i;
+
+	for (i = 0; i < 8; i++)
+		mask |= BIT_ULL(i * 6);
+
+	for (i = 0; i < 6; i++)
+		res |= (hweight64(fold & (mask << i)) & 0x1) << i;
+
+	return res;
+}
+
+static void enetc_reset_mac_addr_filter(struct enetc_mac_filter *filter)
+{
+	filter->mac_addr_cnt = 0;
+
+	bitmap_zero(filter->mac_hash_table,
+		    ENETC_MADDR_HASH_TBL_SZ);
+}
+
+static void enetc_add_mac_addr_em_filter(struct enetc_mac_filter *filter,
+					 const unsigned char *addr)
+{
+	/* add exact match addr */
+	ether_addr_copy(filter->mac_addr, addr);
+	filter->mac_addr_cnt++;
+}
+
+static void enetc_add_mac_addr_ht_filter(struct enetc_mac_filter *filter,
+					 const unsigned char *addr)
+{
+	int idx = enetc_mac_addr_hash_idx(addr);
+
+	/* add hash table entry */
+	__set_bit(idx, filter->mac_hash_table);
+	filter->mac_addr_cnt++;
+}
+
+static void enetc_clear_mac_ht_flt(struct enetc_si *si, int si_idx, int type)
+{
+	bool err = si->errata & ENETC_ERR_UCMCSWP;
+
+	if (type == UC) {
+		enetc_port_wr(&si->hw, ENETC_PSIUMHFR0(si_idx, err), 0);
+		enetc_port_wr(&si->hw, ENETC_PSIUMHFR1(si_idx), 0);
+	} else { /* MC */
+		enetc_port_wr(&si->hw, ENETC_PSIMMHFR0(si_idx, err), 0);
+		enetc_port_wr(&si->hw, ENETC_PSIMMHFR1(si_idx), 0);
+	}
+}
+
+static void enetc_set_mac_ht_flt(struct enetc_si *si, int si_idx, int type,
+				 u32 *hash)
+{
+	bool err = si->errata & ENETC_ERR_UCMCSWP;
+
+	if (type == UC) {
+		enetc_port_wr(&si->hw, ENETC_PSIUMHFR0(si_idx, err), *hash);
+		enetc_port_wr(&si->hw, ENETC_PSIUMHFR1(si_idx), *(hash + 1));
+	} else { /* MC */
+		enetc_port_wr(&si->hw, ENETC_PSIMMHFR0(si_idx, err), *hash);
+		enetc_port_wr(&si->hw, ENETC_PSIMMHFR1(si_idx), *(hash + 1));
+	}
+}
+
+static void enetc_sync_mac_filters(struct enetc_pf *pf)
+{
+	struct enetc_mac_filter *f = pf->mac_filter;
+	struct enetc_si *si = pf->si;
+	int i, pos;
+
+	pos = EMETC_MAC_ADDR_FILT_RES;
+
+	for (i = 0; i < MADDR_TYPE; i++, f++) {
+		bool em = (f->mac_addr_cnt == 1) && (i == UC);
+		bool clear = !f->mac_addr_cnt;
+
+		if (clear) {
+			if (i == UC)
+				enetc_clear_mac_flt_entry(si, pos);
+
+			enetc_clear_mac_ht_flt(si, 0, i);
+			continue;
+		}
+
+		/* exact match filter */
+		if (em) {
+			int err;
+
+			enetc_clear_mac_ht_flt(si, 0, UC);
+
+			err = enetc_set_mac_flt_entry(si, pos, f->mac_addr,
+						      BIT(0));
+			if (!err)
+				continue;
+
+			/* fallback to HT filtering */
+			dev_warn(&si->pdev->dev, "fallback to HT filt (%d)\n",
+				 err);
+		}
+
+		/* hash table filter, clear EM filter for UC entries */
+		if (i == UC)
+			enetc_clear_mac_flt_entry(si, pos);
+
+		enetc_set_mac_ht_flt(si, 0, i, (u32 *)f->mac_hash_table);
+	}
+}
+
+static void enetc_pf_set_rx_mode(struct net_device *ndev)
+{
+	struct enetc_ndev_priv *priv = netdev_priv(ndev);
+	struct enetc_pf *pf = enetc_si_priv(priv->si);
+	struct enetc_hw *hw = &priv->si->hw;
+	bool uprom = false, mprom = false;
+	struct enetc_mac_filter *filter;
+	struct netdev_hw_addr *ha;
+	u32 psipmr = 0;
+	bool em;
+
+	if (ndev->flags & IFF_PROMISC) {
+		/* enable promisc mode for SI0 (PF) */
+		psipmr = ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0);
+		uprom = true;
+		mprom = true;
+		/* enable VLAN promisc mode for SI0 */
+		if (!enetc_si_vlan_promisc_is_on(pf, 0))
+			enetc_enable_si_vlan_promisc(pf, 0);
+
+	} else if (ndev->flags & IFF_ALLMULTI) {
+		/* enable multi cast promisc mode for SI0 (PF) */
+		psipmr = ENETC_PSIPMR_SET_MP(0);
+		mprom = true;
+	}
+
+	/* first 2 filter entries belong to PF */
+	if (!uprom) {
+		/* Update unicast filters */
+		filter = &pf->mac_filter[UC];
+		enetc_reset_mac_addr_filter(filter);
+
+		em = (netdev_uc_count(ndev) == 1);
+		netdev_for_each_uc_addr(ha, ndev) {
+			if (em) {
+				enetc_add_mac_addr_em_filter(filter, ha->addr);
+				break;
+			}
+
+			enetc_add_mac_addr_ht_filter(filter, ha->addr);
+		}
+	}
+
+	if (!mprom) {
+		/* Update multicast filters */
+		filter = &pf->mac_filter[MC];
+		enetc_reset_mac_addr_filter(filter);
+
+		netdev_for_each_mc_addr(ha, ndev) {
+			if (!is_multicast_ether_addr(ha->addr))
+				continue;
+
+			enetc_add_mac_addr_ht_filter(filter, ha->addr);
+		}
+	}
+
+	if (!uprom || !mprom)
+		/* update PF entries */
+		enetc_sync_mac_filters(pf);
+
+	psipmr |= enetc_port_rd(hw, ENETC_PSIPMR) &
+		  ~(ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0));
+	enetc_port_wr(hw, ENETC_PSIPMR, psipmr);
+}
+
+static void enetc_set_vlan_ht_filter(struct enetc_hw *hw, int si_idx,
+				     u32 *hash)
+{
+	enetc_port_wr(hw, ENETC_PSIVHFR0(si_idx), *hash);
+	enetc_port_wr(hw, ENETC_PSIVHFR1(si_idx), *(hash + 1));
+}
+
+static int enetc_vid_hash_idx(unsigned int vid)
+{
+	int res = 0;
+	int i;
+
+	for (i = 0; i < 6; i++)
+		res |= (hweight8(vid & (BIT(i) | BIT(i + 6))) & 0x1) << i;
+
+	return res;
+}
+
+static void enetc_sync_vlan_ht_filter(struct enetc_pf *pf, bool rehash)
+{
+	int i;
+
+	if (rehash) {
+		bitmap_zero(pf->vlan_ht_filter, ENETC_VLAN_HT_SIZE);
+
+		for_each_set_bit(i, pf->active_vlans, VLAN_N_VID) {
+			int hidx = enetc_vid_hash_idx(i);
+
+			__set_bit(hidx, pf->vlan_ht_filter);
+		}
+	}
+
+	enetc_set_vlan_ht_filter(&pf->si->hw, 0, (u32 *)pf->vlan_ht_filter);
+}
+
+static int enetc_vlan_rx_add_vid(struct net_device *ndev, __be16 prot, u16 vid)
+{
+	struct enetc_ndev_priv *priv = netdev_priv(ndev);
+	struct enetc_pf *pf = enetc_si_priv(priv->si);
+	int idx;
+
+	if (enetc_si_vlan_promisc_is_on(pf, 0))
+		enetc_disable_si_vlan_promisc(pf, 0);
+
+	__set_bit(vid, pf->active_vlans);
+
+	idx = enetc_vid_hash_idx(vid);
+	if (!__test_and_set_bit(idx, pf->vlan_ht_filter))
+		enetc_sync_vlan_ht_filter(pf, false);
+
+	return 0;
+}
+
+static int enetc_vlan_rx_del_vid(struct net_device *ndev, __be16 prot, u16 vid)
+{
+	struct enetc_ndev_priv *priv = netdev_priv(ndev);
+	struct enetc_pf *pf = enetc_si_priv(priv->si);
+
+	__clear_bit(vid, pf->active_vlans);
+	enetc_sync_vlan_ht_filter(pf, true);
+
+	if (!enetc_vlan_filter_is_on(pf))
+		enetc_enable_si_vlan_promisc(pf, 0);
+
+	return 0;
+}
+
+static void enetc_set_loopback(struct net_device *ndev, bool en)
+{
+	struct enetc_ndev_priv *priv = netdev_priv(ndev);
+	struct enetc_hw *hw = &priv->si->hw;
+	u32 reg;
+
+	reg = enetc_port_rd(hw, ENETC_PM0_IF_MODE);
+	if (reg & ENETC_PMO_IFM_RG) {
+		/* RGMII mode */
+		reg = (reg & ~ENETC_PM0_IFM_RLP) |
+		      (en ? ENETC_PM0_IFM_RLP : 0);
+		enetc_port_wr(hw, ENETC_PM0_IF_MODE, reg);
+	} else {
+		/* assume SGMII mode */
+		reg = enetc_port_rd(hw, ENETC_PM0_CMD_CFG);
+		reg = (reg & ~ENETC_PM0_CMD_XGLP) |
+		      (en ? ENETC_PM0_CMD_XGLP : 0);
+		reg = (reg & ~ENETC_PM0_CMD_PHY_TX_EN) |
+		      (en ? ENETC_PM0_CMD_PHY_TX_EN : 0);
+		enetc_port_wr(hw, ENETC_PM0_CMD_CFG, reg);
+		enetc_port_wr(hw, ENETC_PM1_CMD_CFG, reg);
+	}
+}
+
+static int enetc_pf_set_vf_mac(struct net_device *ndev, int vf, u8 *mac)
+{
+	struct enetc_ndev_priv *priv = netdev_priv(ndev);
+	struct enetc_pf *pf = enetc_si_priv(priv->si);
+	struct enetc_vf_state *vf_state;
+
+	if (vf >= pf->total_vfs)
+		return -EINVAL;
+
+	if (!is_valid_ether_addr(mac))
+		return -EADDRNOTAVAIL;
+
+	vf_state = &pf->vf_state[vf];
+	vf_state->flags |= ENETC_VF_FLAG_PF_SET_MAC;
+	enetc_pf_set_primary_mac_addr(&priv->si->hw, vf + 1, mac);
+	return 0;
+}
+
+static int enetc_pf_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan,
+				u8 qos, __be16 proto)
+{
+	struct enetc_ndev_priv *priv = netdev_priv(ndev);
+	struct enetc_pf *pf = enetc_si_priv(priv->si);
+
+	if (priv->si->errata & ENETC_ERR_VLAN_ISOL)
+		return -EOPNOTSUPP;
+
+	if (vf >= pf->total_vfs)
+		return -EINVAL;
+
+	if (proto != htons(ETH_P_8021Q))
+		/* only C-tags supported for now */
+		return -EPROTONOSUPPORT;
+
+	enetc_set_isol_vlan(&priv->si->hw, vf + 1, vlan, qos);
+	return 0;
+}
+
+static int enetc_pf_set_vf_spoofchk(struct net_device *ndev, int vf, bool en)
+{
+	struct enetc_ndev_priv *priv = netdev_priv(ndev);
+	struct enetc_pf *pf = enetc_si_priv(priv->si);
+	u32 cfgr;
+
+	if (vf >= pf->total_vfs)
+		return -EINVAL;
+
+	cfgr = enetc_port_rd(&priv->si->hw, ENETC_PSICFGR0(vf + 1));
+	cfgr = (cfgr & ~ENETC_PSICFGR0_ASE) | (en ? ENETC_PSICFGR0_ASE : 0);
+	enetc_port_wr(&priv->si->hw, ENETC_PSICFGR0(vf + 1), cfgr);
+
+	return 0;
+}
+
+static void enetc_port_setup_primary_mac_address(struct enetc_si *si)
+{
+	unsigned char mac_addr[MAX_ADDR_LEN];
+	struct enetc_pf *pf = enetc_si_priv(si);
+	struct enetc_hw *hw = &si->hw;
+	int i;
+
+	/* check MAC addresses for PF and all VFs, if any is 0 set it ro rand */
+	for (i = 0; i < pf->total_vfs + 1; i++) {
+		enetc_pf_get_primary_mac_addr(hw, i, mac_addr);
+		if (!is_zero_ether_addr(mac_addr))
+			continue;
+		eth_random_addr(mac_addr);
+		dev_info(&si->pdev->dev, "no MAC address specified for SI%d, using %pM\n",
+			 i, mac_addr);
+		enetc_pf_set_primary_mac_addr(hw, i, mac_addr);
+	}
+}
+
+static void enetc_port_assign_rfs_entries(struct enetc_si *si)
+{
+	struct enetc_pf *pf = enetc_si_priv(si);
+	struct enetc_hw *hw = &si->hw;
+	int num_entries, vf_entries, i;
+	u32 val;
+
+	/* split RFS entries between functions */
+	val = enetc_port_rd(hw, ENETC_PRFSCAPR);
+	num_entries = ENETC_PRFSCAPR_GET_NUM_RFS(val);
+	vf_entries = num_entries / (pf->total_vfs + 1);
+
+	for (i = 0; i < pf->total_vfs; i++)
+		enetc_port_wr(hw, ENETC_PSIRFSCFGR(i + 1), vf_entries);
+	enetc_port_wr(hw, ENETC_PSIRFSCFGR(0),
+		      num_entries - vf_entries * pf->total_vfs);
+
+	/* enable RFS on port */
+	enetc_port_wr(hw, ENETC_PRFSMR, ENETC_PRFSMR_RFSE);
+}
+
+static void enetc_port_si_configure(struct enetc_si *si)
+{
+	struct enetc_pf *pf = enetc_si_priv(si);
+	struct enetc_hw *hw = &si->hw;
+	int num_rings, i;
+	u32 val;
+
+	val = enetc_port_rd(hw, ENETC_PCAPR0);
+	num_rings = min(ENETC_PCAPR0_RXBDR(val), ENETC_PCAPR0_TXBDR(val));
+
+	val = ENETC_PSICFGR0_SET_TXBDR(ENETC_PF_NUM_RINGS);
+	val |= ENETC_PSICFGR0_SET_RXBDR(ENETC_PF_NUM_RINGS);
+
+	if (unlikely(num_rings < ENETC_PF_NUM_RINGS)) {
+		val = ENETC_PSICFGR0_SET_TXBDR(num_rings);
+		val |= ENETC_PSICFGR0_SET_RXBDR(num_rings);
+
+		dev_warn(&si->pdev->dev, "Found %d rings, expected %d!\n",
+			 num_rings, ENETC_PF_NUM_RINGS);
+
+		num_rings = 0;
+	}
+
+	/* Add default one-time settings for SI0 (PF) */
+	val |= ENETC_PSICFGR0_SIVC(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S);
+
+	enetc_port_wr(hw, ENETC_PSICFGR0(0), val);
+
+	if (num_rings)
+		num_rings -= ENETC_PF_NUM_RINGS;
+
+	/* Configure the SIs for each available VF */
+	val = ENETC_PSICFGR0_SIVC(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S);
+	val |= ENETC_PSICFGR0_VTE | ENETC_PSICFGR0_SIVIE;
+
+	if (num_rings) {
+		num_rings /= pf->total_vfs;
+		val |= ENETC_PSICFGR0_SET_TXBDR(num_rings);
+		val |= ENETC_PSICFGR0_SET_RXBDR(num_rings);
+	}
+
+	for (i = 0; i < pf->total_vfs; i++)
+		enetc_port_wr(hw, ENETC_PSICFGR0(i + 1), val);
+
+	/* Port level VLAN settings */
+	val = ENETC_PVCLCTR_OVTPIDL(ENETC_VLAN_TYPE_C | ENETC_VLAN_TYPE_S);
+	enetc_port_wr(hw, ENETC_PVCLCTR, val);
+	/* use outer tag for VLAN filtering */
+	enetc_port_wr(hw, ENETC_PSIVLANFMR, ENETC_PSIVLANFMR_VS);
+}
+
+static void enetc_configure_port_mac(struct enetc_hw *hw)
+{
+	enetc_port_wr(hw, ENETC_PM0_MAXFRM,
+		      ENETC_SET_MAXFRM(ENETC_RX_MAXFRM_SIZE));
+
+	enetc_port_wr(hw, ENETC_PTCMSDUR(0), ENETC_MAC_MAXFRM_SIZE);
+	enetc_port_wr(hw, ENETC_PTXMBAR, 2 * ENETC_MAC_MAXFRM_SIZE);
+
+	enetc_port_wr(hw, ENETC_PM0_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN |
+		      ENETC_PM0_CMD_TXP	| ENETC_PM0_PROMISC |
+		      ENETC_PM0_TX_EN | ENETC_PM0_RX_EN);
+
+	enetc_port_wr(hw, ENETC_PM1_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN |
+		      ENETC_PM0_CMD_TXP	| ENETC_PM0_PROMISC |
+		      ENETC_PM0_TX_EN | ENETC_PM0_RX_EN);
+	/* set auto-speed for RGMII */
+	if (enetc_port_rd(hw, ENETC_PM0_IF_MODE) & ENETC_PMO_IFM_RG)
+		enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_RGAUTO);
+	if (enetc_global_rd(hw, ENETC_G_EPFBLPR(1)) == ENETC_G_EPFBLPR1_XGMII)
+		enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_XGMII);
+}
+
+static void enetc_configure_port_pmac(struct enetc_hw *hw)
+{
+	u32 temp;
+
+	/* Set pMAC step lock */
+	temp = enetc_port_rd(hw, ENETC_PFPMR);
+	enetc_port_wr(hw, ENETC_PFPMR,
+		      temp | ENETC_PFPMR_PMACE | ENETC_PFPMR_MWLM);
+
+	temp = enetc_port_rd(hw, ENETC_MMCSR);
+	enetc_port_wr(hw, ENETC_MMCSR, temp | ENETC_MMCSR_ME);
+}
+
+static void enetc_configure_port(struct enetc_pf *pf)
+{
+	u8 hash_key[ENETC_RSSHASH_KEY_SIZE];
+	struct enetc_hw *hw = &pf->si->hw;
+
+	enetc_configure_port_pmac(hw);
+
+	enetc_configure_port_mac(hw);
+
+	enetc_port_si_configure(pf->si);
+
+	/* set up hash key */
+	get_random_bytes(hash_key, ENETC_RSSHASH_KEY_SIZE);
+	enetc_set_rss_key(hw, hash_key);
+
+	/* split up RFS entries */
+	enetc_port_assign_rfs_entries(pf->si);
+
+	/* fix-up primary MAC addresses, if not set already */
+	enetc_port_setup_primary_mac_address(pf->si);
+
+	/* enforce VLAN promisc mode for all SIs */
+	pf->vlan_promisc_simap = ENETC_VLAN_PROMISC_MAP_ALL;
+	enetc_set_vlan_promisc(hw, pf->vlan_promisc_simap);
+
+	enetc_port_wr(hw, ENETC_PSIPMR, 0);
+
+	/* enable port */
+	enetc_port_wr(hw, ENETC_PMR, ENETC_PMR_EN);
+}
+
+/* Messaging */
+static u16 enetc_msg_pf_set_vf_primary_mac_addr(struct enetc_pf *pf,
+						int vf_id)
+{
+	struct enetc_vf_state *vf_state = &pf->vf_state[vf_id];
+	struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id];
+	struct enetc_msg_cmd_set_primary_mac *cmd;
+	struct device *dev = &pf->si->pdev->dev;
+	u16 cmd_id;
+	char *addr;
+
+	cmd = (struct enetc_msg_cmd_set_primary_mac *)msg->vaddr;
+	cmd_id = cmd->header.id;
+	if (cmd_id != ENETC_MSG_CMD_MNG_ADD)
+		return ENETC_MSG_CMD_STATUS_FAIL;
+
+	addr = cmd->mac.sa_data;
+	if (vf_state->flags & ENETC_VF_FLAG_PF_SET_MAC)
+		dev_warn(dev, "Attempt to override PF set mac addr for VF%d\n",
+			 vf_id);
+	else
+		enetc_pf_set_primary_mac_addr(&pf->si->hw, vf_id + 1, addr);
+
+	return ENETC_MSG_CMD_STATUS_OK;
+}
+
+void enetc_msg_handle_rxmsg(struct enetc_pf *pf, int vf_id, u16 *status)
+{
+	struct enetc_msg_swbd *msg = &pf->rxmsg[vf_id];
+	struct device *dev = &pf->si->pdev->dev;
+	struct enetc_msg_cmd_header *cmd_hdr;
+	u16 cmd_type;
+
+	*status = ENETC_MSG_CMD_STATUS_OK;
+	cmd_hdr = (struct enetc_msg_cmd_header *)msg->vaddr;
+	cmd_type = cmd_hdr->type;
+
+	switch (cmd_type) {
+	case ENETC_MSG_CMD_MNG_MAC:
+		*status = enetc_msg_pf_set_vf_primary_mac_addr(pf, vf_id);
+		break;
+	default:
+		dev_err(dev, "command not supported (cmd_type: 0x%x)\n",
+			cmd_type);
+	}
+}
+
+#ifdef CONFIG_PCI_IOV
+static int enetc_sriov_configure(struct pci_dev *pdev, int num_vfs)
+{
+	struct enetc_si *si = pci_get_drvdata(pdev);
+	struct enetc_pf *pf = enetc_si_priv(si);
+	int err;
+
+	if (!num_vfs) {
+		enetc_msg_psi_free(pf);
+		kfree(pf->vf_state);
+		pf->num_vfs = 0;
+		pci_disable_sriov(pdev);
+	} else {
+		pf->num_vfs = num_vfs;
+
+		pf->vf_state = kcalloc(num_vfs, sizeof(struct enetc_vf_state),
+				       GFP_KERNEL);
+		if (!pf->vf_state) {
+			pf->num_vfs = 0;
+			return -ENOMEM;
+		}
+
+		err = enetc_msg_psi_init(pf);
+		if (err) {
+			dev_err(&pdev->dev, "enetc_msg_psi_init (%d)\n", err);
+			goto err_msg_psi;
+		}
+
+		err = pci_enable_sriov(pdev, num_vfs);
+		if (err) {
+			dev_err(&pdev->dev, "pci_enable_sriov err %d\n", err);
+			goto err_en_sriov;
+		}
+	}
+
+	return num_vfs;
+
+err_en_sriov:
+	enetc_msg_psi_free(pf);
+err_msg_psi:
+	kfree(pf->vf_state);
+	pf->num_vfs = 0;
+
+	return err;
+}
+#else
+#define enetc_sriov_configure(pdev, num_vfs)	(void)0
+#endif
+
+static int enetc_pf_set_features(struct net_device *ndev,
+				 netdev_features_t features)
+{
+	netdev_features_t changed = ndev->features ^ features;
+	struct enetc_ndev_priv *priv = netdev_priv(ndev);
+
+	if (changed & NETIF_F_HW_VLAN_CTAG_RX)
+		enetc_enable_rxvlan(&priv->si->hw, 0,
+				    !!(features & NETIF_F_HW_VLAN_CTAG_RX));
+
+	if (changed & NETIF_F_HW_VLAN_CTAG_TX)
+		enetc_enable_txvlan(&priv->si->hw, 0,
+				    !!(features & NETIF_F_HW_VLAN_CTAG_TX));
+
+	if (changed & NETIF_F_LOOPBACK)
+		enetc_set_loopback(ndev, !!(features & NETIF_F_LOOPBACK));
+
+	return enetc_set_features(ndev, features);
+}
+
+static const struct net_device_ops enetc_ndev_ops = {
+	.ndo_open		= enetc_open,
+	.ndo_stop		= enetc_close,
+	.ndo_start_xmit		= enetc_xmit,
+	.ndo_get_stats		= enetc_get_stats,
+	.ndo_set_mac_address	= enetc_pf_set_mac_addr,
+	.ndo_set_rx_mode	= enetc_pf_set_rx_mode,
+	.ndo_vlan_rx_add_vid	= enetc_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid	= enetc_vlan_rx_del_vid,
+	.ndo_set_vf_mac		= enetc_pf_set_vf_mac,
+	.ndo_set_vf_vlan	= enetc_pf_set_vf_vlan,
+	.ndo_set_vf_spoofchk	= enetc_pf_set_vf_spoofchk,
+	.ndo_set_features	= enetc_pf_set_features,
+};
+
+static void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
+				  const struct net_device_ops *ndev_ops)
+{
+	struct enetc_ndev_priv *priv = netdev_priv(ndev);
+
+	SET_NETDEV_DEV(ndev, &si->pdev->dev);
+	priv->ndev = ndev;
+	priv->si = si;
+	priv->dev = &si->pdev->dev;
+	si->ndev = ndev;
+
+	priv->msg_enable = (NETIF_MSG_WOL << 1) - 1;
+	ndev->netdev_ops = ndev_ops;
+	enetc_set_ethtool_ops(ndev);
+	ndev->watchdog_timeo = 5 * HZ;
+	ndev->max_mtu = ENETC_MAX_MTU;
+
+	ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_HW_CSUM |
+			    NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
+			    NETIF_F_LOOPBACK;
+	ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG |
+			 NETIF_F_RXCSUM | NETIF_F_HW_CSUM |
+			 NETIF_F_HW_VLAN_CTAG_TX |
+			 NETIF_F_HW_VLAN_CTAG_RX |
+			 NETIF_F_HW_VLAN_CTAG_FILTER;
+
+	if (si->num_rss)
+		ndev->hw_features |= NETIF_F_RXHASH;
+
+	if (si->errata & ENETC_ERR_TXCSUM) {
+		ndev->hw_features &= ~NETIF_F_HW_CSUM;
+		ndev->features &= ~NETIF_F_HW_CSUM;
+	}
+
+	ndev->priv_flags |= IFF_UNICAST_FLT;
+
+	/* pick up primary MAC address from SI */
+	enetc_get_primary_mac_addr(&si->hw, ndev->dev_addr);
+}
+
+static int enetc_of_get_phy(struct enetc_ndev_priv *priv)
+{
+	struct enetc_pf *pf = enetc_si_priv(priv->si);
+	struct device_node *np = priv->dev->of_node;
+	int err;
+
+	if (!np) {
+		dev_err(priv->dev, "missing ENETC port node\n");
+		return -ENODEV;
+	}
+
+	priv->phy_node = of_parse_phandle(np, "phy-handle", 0);
+	if (!priv->phy_node) {
+		if (!of_phy_is_fixed_link(np)) {
+			dev_err(priv->dev, "PHY not specified\n");
+			return -ENODEV;
+		}
+
+		err = of_phy_register_fixed_link(np);
+		if (err < 0) {
+			dev_err(priv->dev, "fixed link registration failed\n");
+			return err;
+		}
+
+		priv->phy_node = of_node_get(np);
+	}
+
+	if (!of_phy_is_fixed_link(np)) {
+		err = enetc_mdio_probe(pf);
+		if (err) {
+			of_node_put(priv->phy_node);
+			return err;
+		}
+	}
+
+	priv->if_mode = of_get_phy_mode(np);
+	if (priv->if_mode < 0) {
+		dev_err(priv->dev, "missing phy type\n");
+		of_node_put(priv->phy_node);
+		if (of_phy_is_fixed_link(np))
+			of_phy_deregister_fixed_link(np);
+		else
+			enetc_mdio_remove(pf);
+
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void enetc_of_put_phy(struct enetc_ndev_priv *priv)
+{
+	struct device_node *np = priv->dev->of_node;
+
+	if (np && of_phy_is_fixed_link(np))
+		of_phy_deregister_fixed_link(np);
+	if (priv->phy_node)
+		of_node_put(priv->phy_node);
+}
+
+static int enetc_pf_probe(struct pci_dev *pdev,
+			  const struct pci_device_id *ent)
+{
+	struct enetc_ndev_priv *priv;
+	struct net_device *ndev;
+	struct enetc_si *si;
+	struct enetc_pf *pf;
+	int err;
+
+	if (pdev->dev.of_node && !of_device_is_available(pdev->dev.of_node)) {
+		dev_info(&pdev->dev, "device is disabled, skipping\n");
+		return -ENODEV;
+	}
+
+	err = enetc_pci_probe(pdev, KBUILD_MODNAME, sizeof(*pf));
+	if (err) {
+		dev_err(&pdev->dev, "PCI probing failed\n");
+		return err;
+	}
+
+	si = pci_get_drvdata(pdev);
+	if (!si->hw.port || !si->hw.global) {
+		err = -ENODEV;
+		dev_err(&pdev->dev, "could not map PF space, probing a VF?\n");
+		goto err_map_pf_space;
+	}
+
+	pf = enetc_si_priv(si);
+	pf->si = si;
+	pf->total_vfs = pci_sriov_get_totalvfs(pdev);
+
+	enetc_configure_port(pf);
+
+	enetc_get_si_caps(si);
+
+	ndev = alloc_etherdev_mq(sizeof(*priv), ENETC_MAX_NUM_TXQS);
+	if (!ndev) {
+		err = -ENOMEM;
+		dev_err(&pdev->dev, "netdev creation failed\n");
+		goto err_alloc_netdev;
+	}
+
+	enetc_pf_netdev_setup(si, ndev, &enetc_ndev_ops);
+
+	priv = netdev_priv(ndev);
+
+	enetc_init_si_rings_params(priv);
+
+	err = enetc_alloc_si_resources(priv);
+	if (err) {
+		dev_err(&pdev->dev, "SI resource alloc failed\n");
+		goto err_alloc_si_res;
+	}
+
+	err = enetc_alloc_msix(priv);
+	if (err) {
+		dev_err(&pdev->dev, "MSIX alloc failed\n");
+		goto err_alloc_msix;
+	}
+
+	err = enetc_of_get_phy(priv);
+	if (err)
+		dev_warn(&pdev->dev, "Fallback to PHY-less operation\n");
+
+	err = register_netdev(ndev);
+	if (err)
+		goto err_reg_netdev;
+
+	netif_carrier_off(ndev);
+
+	netif_info(priv, probe, ndev, "%s v%s\n",
+		   enetc_drv_name, enetc_drv_ver);
+
+	return 0;
+
+err_reg_netdev:
+	enetc_of_put_phy(priv);
+	enetc_free_msix(priv);
+err_alloc_msix:
+	enetc_free_si_resources(priv);
+err_alloc_si_res:
+	si->ndev = NULL;
+	free_netdev(ndev);
+err_alloc_netdev:
+err_map_pf_space:
+	enetc_pci_remove(pdev);
+
+	return err;
+}
+
+static void enetc_pf_remove(struct pci_dev *pdev)
+{
+	struct enetc_si *si = pci_get_drvdata(pdev);
+	struct enetc_pf *pf = enetc_si_priv(si);
+	struct enetc_ndev_priv *priv;
+
+	if (pf->num_vfs)
+		enetc_sriov_configure(pdev, 0);
+
+	priv = netdev_priv(si->ndev);
+	netif_info(priv, drv, si->ndev, "%s v%s remove\n",
+		   enetc_drv_name, enetc_drv_ver);
+
+	unregister_netdev(si->ndev);
+
+	enetc_mdio_remove(pf);
+	enetc_of_put_phy(priv);
+
+	enetc_free_msix(priv);
+
+	enetc_free_si_resources(priv);
+
+	free_netdev(si->ndev);
+
+	enetc_pci_remove(pdev);
+}
+
+static const struct pci_device_id enetc_pf_id_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_PF) },
+	{ 0, } /* End of table. */
+};
+MODULE_DEVICE_TABLE(pci, enetc_pf_id_table);
+
+static struct pci_driver enetc_pf_driver = {
+	.name = KBUILD_MODNAME,
+	.id_table = enetc_pf_id_table,
+	.probe = enetc_pf_probe,
+	.remove = enetc_pf_remove,
+#ifdef CONFIG_PCI_IOV
+	.sriov_configure = enetc_sriov_configure,
+#endif
+};
+module_pci_driver(enetc_pf_driver);
+
+MODULE_DESCRIPTION(ENETC_DRV_NAME_STR);
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(ENETC_DRV_VER_STR);