blob: 09e9da10b786549b6232d8069c4e45857b95fd8c [file] [log] [blame]
/*
* Huawei HiNIC PCI Express Linux driver
* Copyright(c) 2017 Huawei Technologies Co., Ltd
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/pci.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/etherdevice.h>
#include <linux/netdevice.h>
#include <linux/slab.h>
#include <linux/if_vlan.h>
#include <linux/semaphore.h>
#include <linux/workqueue.h>
#include <net/ip.h>
#include <linux/bitops.h>
#include <linux/bitmap.h>
#include <linux/delay.h>
#include <linux/err.h>
#include "hinic_hw_qp.h"
#include "hinic_hw_dev.h"
#include "hinic_port.h"
#include "hinic_tx.h"
#include "hinic_rx.h"
#include "hinic_dev.h"
MODULE_AUTHOR("Huawei Technologies CO., Ltd");
MODULE_DESCRIPTION("Huawei Intelligent NIC driver");
MODULE_LICENSE("GPL");
static unsigned int tx_weight = 64;
module_param(tx_weight, uint, 0644);
MODULE_PARM_DESC(tx_weight, "Number Tx packets for NAPI budget (default=64)");
static unsigned int rx_weight = 64;
module_param(rx_weight, uint, 0644);
MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)");
#define HINIC_DEV_ID_QUAD_PORT_25GE 0x1822
#define HINIC_DEV_ID_DUAL_PORT_25GE 0x0200
#define HINIC_DEV_ID_DUAL_PORT_100GE 0x0201
#define HINIC_WQ_NAME "hinic_dev"
#define MSG_ENABLE_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
NETIF_MSG_IFUP | \
NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR)
#define VLAN_BITMAP_SIZE(nic_dev) (ALIGN(VLAN_N_VID, 8) / 8)
#define work_to_rx_mode_work(work) \
container_of(work, struct hinic_rx_mode_work, work)
#define rx_mode_work_to_nic_dev(rx_mode_work) \
container_of(rx_mode_work, struct hinic_dev, rx_mode_work)
static int change_mac_addr(struct net_device *netdev, const u8 *addr);
static void set_link_speed(struct ethtool_link_ksettings *link_ksettings,
enum hinic_speed speed)
{
switch (speed) {
case HINIC_SPEED_10MB_LINK:
link_ksettings->base.speed = SPEED_10;
break;
case HINIC_SPEED_100MB_LINK:
link_ksettings->base.speed = SPEED_100;
break;
case HINIC_SPEED_1000MB_LINK:
link_ksettings->base.speed = SPEED_1000;
break;
case HINIC_SPEED_10GB_LINK:
link_ksettings->base.speed = SPEED_10000;
break;
case HINIC_SPEED_25GB_LINK:
link_ksettings->base.speed = SPEED_25000;
break;
case HINIC_SPEED_40GB_LINK:
link_ksettings->base.speed = SPEED_40000;
break;
case HINIC_SPEED_100GB_LINK:
link_ksettings->base.speed = SPEED_100000;
break;
default:
link_ksettings->base.speed = SPEED_UNKNOWN;
break;
}
}
static int hinic_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings
*link_ksettings)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
enum hinic_port_link_state link_state;
struct hinic_port_cap port_cap;
int err;
ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
ethtool_link_ksettings_add_link_mode(link_ksettings, supported,
Autoneg);
link_ksettings->base.speed = SPEED_UNKNOWN;
link_ksettings->base.autoneg = AUTONEG_DISABLE;
link_ksettings->base.duplex = DUPLEX_UNKNOWN;
err = hinic_port_get_cap(nic_dev, &port_cap);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to get port capabilities\n");
return err;
}
err = hinic_port_link_state(nic_dev, &link_state);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to get port link state\n");
return err;
}
if (link_state != HINIC_LINK_STATE_UP) {
netif_info(nic_dev, drv, netdev, "No link\n");
return err;
}
set_link_speed(link_ksettings, port_cap.speed);
if (!!(port_cap.autoneg_cap & HINIC_AUTONEG_SUPPORTED))
ethtool_link_ksettings_add_link_mode(link_ksettings,
advertising, Autoneg);
if (port_cap.autoneg_state == HINIC_AUTONEG_ACTIVE)
link_ksettings->base.autoneg = AUTONEG_ENABLE;
link_ksettings->base.duplex = (port_cap.duplex == HINIC_DUPLEX_FULL) ?
DUPLEX_FULL : DUPLEX_HALF;
return 0;
}
static void hinic_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *info)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
struct hinic_hwdev *hwdev = nic_dev->hwdev;
struct hinic_hwif *hwif = hwdev->hwif;
strlcpy(info->driver, HINIC_DRV_NAME, sizeof(info->driver));
strlcpy(info->bus_info, pci_name(hwif->pdev), sizeof(info->bus_info));
}
static void hinic_get_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
ring->rx_max_pending = HINIC_RQ_DEPTH;
ring->tx_max_pending = HINIC_SQ_DEPTH;
ring->rx_pending = HINIC_RQ_DEPTH;
ring->tx_pending = HINIC_SQ_DEPTH;
}
static void hinic_get_channels(struct net_device *netdev,
struct ethtool_channels *channels)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
struct hinic_hwdev *hwdev = nic_dev->hwdev;
channels->max_rx = hwdev->nic_cap.max_qps;
channels->max_tx = hwdev->nic_cap.max_qps;
channels->max_other = 0;
channels->max_combined = 0;
channels->rx_count = hinic_hwdev_num_qps(hwdev);
channels->tx_count = hinic_hwdev_num_qps(hwdev);
channels->other_count = 0;
channels->combined_count = 0;
}
static const struct ethtool_ops hinic_ethtool_ops = {
.get_link_ksettings = hinic_get_link_ksettings,
.get_drvinfo = hinic_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_ringparam = hinic_get_ringparam,
.get_channels = hinic_get_channels,
};
static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq)
{
struct hinic_rxq_stats *nic_rx_stats = &nic_dev->rx_stats;
struct hinic_rxq_stats rx_stats;
u64_stats_init(&rx_stats.syncp);
hinic_rxq_get_stats(rxq, &rx_stats);
u64_stats_update_begin(&nic_rx_stats->syncp);
nic_rx_stats->bytes += rx_stats.bytes;
nic_rx_stats->pkts += rx_stats.pkts;
u64_stats_update_end(&nic_rx_stats->syncp);
hinic_rxq_clean_stats(rxq);
}
static void update_tx_stats(struct hinic_dev *nic_dev, struct hinic_txq *txq)
{
struct hinic_txq_stats *nic_tx_stats = &nic_dev->tx_stats;
struct hinic_txq_stats tx_stats;
u64_stats_init(&tx_stats.syncp);
hinic_txq_get_stats(txq, &tx_stats);
u64_stats_update_begin(&nic_tx_stats->syncp);
nic_tx_stats->bytes += tx_stats.bytes;
nic_tx_stats->pkts += tx_stats.pkts;
nic_tx_stats->tx_busy += tx_stats.tx_busy;
nic_tx_stats->tx_wake += tx_stats.tx_wake;
nic_tx_stats->tx_dropped += tx_stats.tx_dropped;
u64_stats_update_end(&nic_tx_stats->syncp);
hinic_txq_clean_stats(txq);
}
static void update_nic_stats(struct hinic_dev *nic_dev)
{
int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
for (i = 0; i < num_qps; i++)
update_rx_stats(nic_dev, &nic_dev->rxqs[i]);
for (i = 0; i < num_qps; i++)
update_tx_stats(nic_dev, &nic_dev->txqs[i]);
}
/**
* create_txqs - Create the Logical Tx Queues of specific NIC device
* @nic_dev: the specific NIC device
*
* Return 0 - Success, negative - Failure
**/
static int create_txqs(struct hinic_dev *nic_dev)
{
int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
struct net_device *netdev = nic_dev->netdev;
size_t txq_size;
if (nic_dev->txqs)
return -EINVAL;
txq_size = num_txqs * sizeof(*nic_dev->txqs);
nic_dev->txqs = devm_kzalloc(&netdev->dev, txq_size, GFP_KERNEL);
if (!nic_dev->txqs)
return -ENOMEM;
for (i = 0; i < num_txqs; i++) {
struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to init Txq\n");
goto err_init_txq;
}
}
return 0;
err_init_txq:
for (j = 0; j < i; j++)
hinic_clean_txq(&nic_dev->txqs[j]);
devm_kfree(&netdev->dev, nic_dev->txqs);
return err;
}
/**
* free_txqs - Free the Logical Tx Queues of specific NIC device
* @nic_dev: the specific NIC device
**/
static void free_txqs(struct hinic_dev *nic_dev)
{
int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
struct net_device *netdev = nic_dev->netdev;
if (!nic_dev->txqs)
return;
for (i = 0; i < num_txqs; i++)
hinic_clean_txq(&nic_dev->txqs[i]);
devm_kfree(&netdev->dev, nic_dev->txqs);
nic_dev->txqs = NULL;
}
/**
* create_txqs - Create the Logical Rx Queues of specific NIC device
* @nic_dev: the specific NIC device
*
* Return 0 - Success, negative - Failure
**/
static int create_rxqs(struct hinic_dev *nic_dev)
{
int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
struct net_device *netdev = nic_dev->netdev;
size_t rxq_size;
if (nic_dev->rxqs)
return -EINVAL;
rxq_size = num_rxqs * sizeof(*nic_dev->rxqs);
nic_dev->rxqs = devm_kzalloc(&netdev->dev, rxq_size, GFP_KERNEL);
if (!nic_dev->rxqs)
return -ENOMEM;
for (i = 0; i < num_rxqs; i++) {
struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to init rxq\n");
goto err_init_rxq;
}
}
return 0;
err_init_rxq:
for (j = 0; j < i; j++)
hinic_clean_rxq(&nic_dev->rxqs[j]);
devm_kfree(&netdev->dev, nic_dev->rxqs);
return err;
}
/**
* free_txqs - Free the Logical Rx Queues of specific NIC device
* @nic_dev: the specific NIC device
**/
static void free_rxqs(struct hinic_dev *nic_dev)
{
int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
struct net_device *netdev = nic_dev->netdev;
if (!nic_dev->rxqs)
return;
for (i = 0; i < num_rxqs; i++)
hinic_clean_rxq(&nic_dev->rxqs[i]);
devm_kfree(&netdev->dev, nic_dev->rxqs);
nic_dev->rxqs = NULL;
}
static int hinic_open(struct net_device *netdev)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
enum hinic_port_link_state link_state;
int err, ret, num_qps;
if (!(nic_dev->flags & HINIC_INTF_UP)) {
err = hinic_hwdev_ifup(nic_dev->hwdev);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed - HW interface up\n");
return err;
}
}
err = create_txqs(nic_dev);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to create Tx queues\n");
goto err_create_txqs;
}
err = create_rxqs(nic_dev);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to create Rx queues\n");
goto err_create_rxqs;
}
num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
netif_set_real_num_tx_queues(netdev, num_qps);
netif_set_real_num_rx_queues(netdev, num_qps);
err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to set port state\n");
goto err_port_state;
}
err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to set func port state\n");
goto err_func_port_state;
}
/* Wait up to 3 sec between port enable to link state */
msleep(3000);
down(&nic_dev->mgmt_lock);
err = hinic_port_link_state(nic_dev, &link_state);
if (err) {
netif_err(nic_dev, drv, netdev, "Failed to get link state\n");
goto err_port_link;
}
if (link_state == HINIC_LINK_STATE_UP)
nic_dev->flags |= HINIC_LINK_UP;
nic_dev->flags |= HINIC_INTF_UP;
if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
(HINIC_LINK_UP | HINIC_INTF_UP)) {
netif_info(nic_dev, drv, netdev, "link + intf UP\n");
netif_carrier_on(netdev);
netif_tx_wake_all_queues(netdev);
}
up(&nic_dev->mgmt_lock);
netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n");
return 0;
err_port_link:
up(&nic_dev->mgmt_lock);
ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
if (ret)
netif_warn(nic_dev, drv, netdev,
"Failed to revert func port state\n");
err_func_port_state:
ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
if (ret)
netif_warn(nic_dev, drv, netdev,
"Failed to revert port state\n");
err_port_state:
free_rxqs(nic_dev);
err_create_rxqs:
free_txqs(nic_dev);
err_create_txqs:
if (!(nic_dev->flags & HINIC_INTF_UP))
hinic_hwdev_ifdown(nic_dev->hwdev);
return err;
}
static int hinic_close(struct net_device *netdev)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
unsigned int flags;
int err;
down(&nic_dev->mgmt_lock);
flags = nic_dev->flags;
nic_dev->flags &= ~HINIC_INTF_UP;
netif_carrier_off(netdev);
netif_tx_disable(netdev);
update_nic_stats(nic_dev);
up(&nic_dev->mgmt_lock);
err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to set func port state\n");
nic_dev->flags |= (flags & HINIC_INTF_UP);
return err;
}
err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
if (err) {
netif_err(nic_dev, drv, netdev, "Failed to set port state\n");
nic_dev->flags |= (flags & HINIC_INTF_UP);
return err;
}
free_rxqs(nic_dev);
free_txqs(nic_dev);
if (flags & HINIC_INTF_UP)
hinic_hwdev_ifdown(nic_dev->hwdev);
netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n");
return 0;
}
static int hinic_change_mtu(struct net_device *netdev, int new_mtu)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
int err;
netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu);
err = hinic_port_set_mtu(nic_dev, new_mtu);
if (err)
netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n");
else
netdev->mtu = new_mtu;
return err;
}
/**
* change_mac_addr - change the main mac address of network device
* @netdev: network device
* @addr: mac address to set
*
* Return 0 - Success, negative - Failure
**/
static int change_mac_addr(struct net_device *netdev, const u8 *addr)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
u16 vid = 0;
int err;
if (!is_valid_ether_addr(addr))
return -EADDRNOTAVAIL;
netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n",
addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
down(&nic_dev->mgmt_lock);
do {
err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to delete mac\n");
break;
}
err = hinic_port_add_mac(nic_dev, addr, vid);
if (err) {
netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
break;
}
vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
} while (vid != VLAN_N_VID);
up(&nic_dev->mgmt_lock);
return err;
}
static int hinic_set_mac_addr(struct net_device *netdev, void *addr)
{
unsigned char new_mac[ETH_ALEN];
struct sockaddr *saddr = addr;
int err;
memcpy(new_mac, saddr->sa_data, ETH_ALEN);
err = change_mac_addr(netdev, new_mac);
if (!err)
memcpy(netdev->dev_addr, new_mac, ETH_ALEN);
return err;
}
/**
* add_mac_addr - add mac address to network device
* @netdev: network device
* @addr: mac address to add
*
* Return 0 - Success, negative - Failure
**/
static int add_mac_addr(struct net_device *netdev, const u8 *addr)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
u16 vid = 0;
int err;
if (!is_valid_ether_addr(addr))
return -EADDRNOTAVAIL;
netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
down(&nic_dev->mgmt_lock);
do {
err = hinic_port_add_mac(nic_dev, addr, vid);
if (err) {
netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
break;
}
vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
} while (vid != VLAN_N_VID);
up(&nic_dev->mgmt_lock);
return err;
}
/**
* remove_mac_addr - remove mac address from network device
* @netdev: network device
* @addr: mac address to remove
*
* Return 0 - Success, negative - Failure
**/
static int remove_mac_addr(struct net_device *netdev, const u8 *addr)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
u16 vid = 0;
int err;
if (!is_valid_ether_addr(addr))
return -EADDRNOTAVAIL;
netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n",
addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
down(&nic_dev->mgmt_lock);
do {
err = hinic_port_del_mac(nic_dev, addr, vid);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to delete mac\n");
break;
}
vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
} while (vid != VLAN_N_VID);
up(&nic_dev->mgmt_lock);
return err;
}
static int hinic_vlan_rx_add_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
int ret, err;
netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid);
down(&nic_dev->mgmt_lock);
err = hinic_port_add_vlan(nic_dev, vid);
if (err) {
netif_err(nic_dev, drv, netdev, "Failed to add vlan\n");
goto err_vlan_add;
}
err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid);
if (err) {
netif_err(nic_dev, drv, netdev, "Failed to set mac\n");
goto err_add_mac;
}
bitmap_set(nic_dev->vlan_bitmap, vid, 1);
up(&nic_dev->mgmt_lock);
return 0;
err_add_mac:
ret = hinic_port_del_vlan(nic_dev, vid);
if (ret)
netif_err(nic_dev, drv, netdev,
"Failed to revert by removing vlan\n");
err_vlan_add:
up(&nic_dev->mgmt_lock);
return err;
}
static int hinic_vlan_rx_kill_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
int err;
netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid);
down(&nic_dev->mgmt_lock);
err = hinic_port_del_vlan(nic_dev, vid);
if (err) {
netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n");
goto err_del_vlan;
}
bitmap_clear(nic_dev->vlan_bitmap, vid, 1);
up(&nic_dev->mgmt_lock);
return 0;
err_del_vlan:
up(&nic_dev->mgmt_lock);
return err;
}
static void set_rx_mode(struct work_struct *work)
{
struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n");
hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode);
__dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
__dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
}
static void hinic_set_rx_mode(struct net_device *netdev)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
struct hinic_rx_mode_work *rx_mode_work;
u32 rx_mode;
rx_mode_work = &nic_dev->rx_mode_work;
rx_mode = HINIC_RX_MODE_UC |
HINIC_RX_MODE_MC |
HINIC_RX_MODE_BC;
if (netdev->flags & IFF_PROMISC)
rx_mode |= HINIC_RX_MODE_PROMISC;
else if (netdev->flags & IFF_ALLMULTI)
rx_mode |= HINIC_RX_MODE_MC_ALL;
rx_mode_work->rx_mode = rx_mode;
queue_work(nic_dev->workq, &rx_mode_work->work);
}
static void hinic_tx_timeout(struct net_device *netdev)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
netif_err(nic_dev, drv, netdev, "Tx timeout\n");
}
static void hinic_get_stats64(struct net_device *netdev,
struct rtnl_link_stats64 *stats)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
struct hinic_rxq_stats *nic_rx_stats;
struct hinic_txq_stats *nic_tx_stats;
nic_rx_stats = &nic_dev->rx_stats;
nic_tx_stats = &nic_dev->tx_stats;
down(&nic_dev->mgmt_lock);
if (nic_dev->flags & HINIC_INTF_UP)
update_nic_stats(nic_dev);
up(&nic_dev->mgmt_lock);
stats->rx_bytes = nic_rx_stats->bytes;
stats->rx_packets = nic_rx_stats->pkts;
stats->tx_bytes = nic_tx_stats->bytes;
stats->tx_packets = nic_tx_stats->pkts;
stats->tx_errors = nic_tx_stats->tx_dropped;
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static void hinic_netpoll(struct net_device *netdev)
{
struct hinic_dev *nic_dev = netdev_priv(netdev);
int i, num_qps;
num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
for (i = 0; i < num_qps; i++) {
struct hinic_txq *txq = &nic_dev->txqs[i];
struct hinic_rxq *rxq = &nic_dev->rxqs[i];
napi_schedule(&txq->napi);
napi_schedule(&rxq->napi);
}
}
#endif
static const struct net_device_ops hinic_netdev_ops = {
.ndo_open = hinic_open,
.ndo_stop = hinic_close,
.ndo_change_mtu = hinic_change_mtu,
.ndo_set_mac_address = hinic_set_mac_addr,
.ndo_validate_addr = eth_validate_addr,
.ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
.ndo_set_rx_mode = hinic_set_rx_mode,
.ndo_start_xmit = hinic_xmit_frame,
.ndo_tx_timeout = hinic_tx_timeout,
.ndo_get_stats64 = hinic_get_stats64,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = hinic_netpoll,
#endif
};
static void netdev_features_init(struct net_device *netdev)
{
netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA;
netdev->vlan_features = netdev->hw_features;
netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
}
/**
* link_status_event_handler - link event handler
* @handle: nic device for the handler
* @buf_in: input buffer
* @in_size: input size
* @buf_in: output buffer
* @out_size: returned output size
*
* Return 0 - Success, negative - Failure
**/
static void link_status_event_handler(void *handle, void *buf_in, u16 in_size,
void *buf_out, u16 *out_size)
{
struct hinic_port_link_status *link_status, *ret_link_status;
struct hinic_dev *nic_dev = handle;
link_status = buf_in;
if (link_status->link == HINIC_LINK_STATE_UP) {
down(&nic_dev->mgmt_lock);
nic_dev->flags |= HINIC_LINK_UP;
if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
(HINIC_LINK_UP | HINIC_INTF_UP)) {
netif_carrier_on(nic_dev->netdev);
netif_tx_wake_all_queues(nic_dev->netdev);
}
up(&nic_dev->mgmt_lock);
netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n");
} else {
down(&nic_dev->mgmt_lock);
nic_dev->flags &= ~HINIC_LINK_UP;
netif_carrier_off(nic_dev->netdev);
netif_tx_disable(nic_dev->netdev);
up(&nic_dev->mgmt_lock);
netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n");
}
ret_link_status = buf_out;
ret_link_status->status = 0;
*out_size = sizeof(*ret_link_status);
}
/**
* nic_dev_init - Initialize the NIC device
* @pdev: the NIC pci device
*
* Return 0 - Success, negative - Failure
**/
static int nic_dev_init(struct pci_dev *pdev)
{
struct hinic_rx_mode_work *rx_mode_work;
struct hinic_txq_stats *tx_stats;
struct hinic_rxq_stats *rx_stats;
struct hinic_dev *nic_dev;
struct net_device *netdev;
struct hinic_hwdev *hwdev;
int err, num_qps;
hwdev = hinic_init_hwdev(pdev);
if (IS_ERR(hwdev)) {
dev_err(&pdev->dev, "Failed to initialize HW device\n");
return PTR_ERR(hwdev);
}
num_qps = hinic_hwdev_num_qps(hwdev);
if (num_qps <= 0) {
dev_err(&pdev->dev, "Invalid number of QPS\n");
err = -EINVAL;
goto err_num_qps;
}
netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
if (!netdev) {
dev_err(&pdev->dev, "Failed to allocate Ethernet device\n");
err = -ENOMEM;
goto err_alloc_etherdev;
}
netdev->netdev_ops = &hinic_netdev_ops;
netdev->ethtool_ops = &hinic_ethtool_ops;
netdev->max_mtu = ETH_MAX_MTU;
nic_dev = netdev_priv(netdev);
nic_dev->netdev = netdev;
nic_dev->hwdev = hwdev;
nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
nic_dev->flags = 0;
nic_dev->txqs = NULL;
nic_dev->rxqs = NULL;
nic_dev->tx_weight = tx_weight;
nic_dev->rx_weight = rx_weight;
sema_init(&nic_dev->mgmt_lock, 1);
tx_stats = &nic_dev->tx_stats;
rx_stats = &nic_dev->rx_stats;
u64_stats_init(&tx_stats->syncp);
u64_stats_init(&rx_stats->syncp);
nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev,
VLAN_BITMAP_SIZE(nic_dev),
GFP_KERNEL);
if (!nic_dev->vlan_bitmap) {
err = -ENOMEM;
goto err_vlan_bitmap;
}
nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME);
if (!nic_dev->workq) {
err = -ENOMEM;
goto err_workq;
}
pci_set_drvdata(pdev, netdev);
err = hinic_port_get_mac(nic_dev, netdev->dev_addr);
if (err)
dev_warn(&pdev->dev, "Failed to get mac address\n");
err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0);
if (err) {
dev_err(&pdev->dev, "Failed to add mac\n");
goto err_add_mac;
}
err = hinic_port_set_mtu(nic_dev, netdev->mtu);
if (err) {
dev_err(&pdev->dev, "Failed to set mtu\n");
goto err_set_mtu;
}
rx_mode_work = &nic_dev->rx_mode_work;
INIT_WORK(&rx_mode_work->work, set_rx_mode);
netdev_features_init(netdev);
netif_carrier_off(netdev);
hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
nic_dev, link_status_event_handler);
SET_NETDEV_DEV(netdev, &pdev->dev);
err = register_netdev(netdev);
if (err) {
dev_err(&pdev->dev, "Failed to register netdev\n");
goto err_reg_netdev;
}
return 0;
err_reg_netdev:
hinic_hwdev_cb_unregister(nic_dev->hwdev,
HINIC_MGMT_MSG_CMD_LINK_STATUS);
cancel_work_sync(&rx_mode_work->work);
err_set_mtu:
err_add_mac:
pci_set_drvdata(pdev, NULL);
destroy_workqueue(nic_dev->workq);
err_workq:
err_vlan_bitmap:
free_netdev(netdev);
err_alloc_etherdev:
err_num_qps:
hinic_free_hwdev(hwdev);
return err;
}
static int hinic_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
int err = pci_enable_device(pdev);
if (err) {
dev_err(&pdev->dev, "Failed to enable PCI device\n");
return err;
}
err = pci_request_regions(pdev, HINIC_DRV_NAME);
if (err) {
dev_err(&pdev->dev, "Failed to request PCI regions\n");
goto err_pci_regions;
}
pci_set_master(pdev);
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
if (err) {
dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n");
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
if (err) {
dev_err(&pdev->dev, "Failed to set DMA mask\n");
goto err_dma_mask;
}
}
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
if (err) {
dev_warn(&pdev->dev,
"Couldn't set 64-bit consistent DMA mask\n");
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
if (err) {
dev_err(&pdev->dev,
"Failed to set consistent DMA mask\n");
goto err_dma_consistent_mask;
}
}
err = nic_dev_init(pdev);
if (err) {
dev_err(&pdev->dev, "Failed to initialize NIC device\n");
goto err_nic_dev_init;
}
dev_info(&pdev->dev, "HiNIC driver - probed\n");
return 0;
err_nic_dev_init:
err_dma_consistent_mask:
err_dma_mask:
pci_release_regions(pdev);
err_pci_regions:
pci_disable_device(pdev);
return err;
}
static void hinic_remove(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct hinic_dev *nic_dev = netdev_priv(netdev);
struct hinic_rx_mode_work *rx_mode_work;
unregister_netdev(netdev);
hinic_hwdev_cb_unregister(nic_dev->hwdev,
HINIC_MGMT_MSG_CMD_LINK_STATUS);
rx_mode_work = &nic_dev->rx_mode_work;
cancel_work_sync(&rx_mode_work->work);
pci_set_drvdata(pdev, NULL);
destroy_workqueue(nic_dev->workq);
hinic_free_hwdev(nic_dev->hwdev);
free_netdev(netdev);
pci_release_regions(pdev);
pci_disable_device(pdev);
dev_info(&pdev->dev, "HiNIC driver - removed\n");
}
static const struct pci_device_id hinic_pci_table[] = {
{ PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0},
{ PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_25GE), 0},
{ PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0},
{ 0, 0}
};
MODULE_DEVICE_TABLE(pci, hinic_pci_table);
static struct pci_driver hinic_driver = {
.name = HINIC_DRV_NAME,
.id_table = hinic_pci_table,
.probe = hinic_probe,
.remove = hinic_remove,
};
module_pci_driver(hinic_driver);