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// 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_SG | 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);
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