| /* |
| * Copyright (C) 2015 Microchip Technology |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| #include <linux/version.h> |
| #include <linux/module.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/ethtool.h> |
| #include <linux/usb.h> |
| #include <linux/crc32.h> |
| #include <linux/signal.h> |
| #include <linux/slab.h> |
| #include <linux/if_vlan.h> |
| #include <linux/uaccess.h> |
| #include <linux/list.h> |
| #include <linux/ip.h> |
| #include <linux/ipv6.h> |
| #include <linux/mdio.h> |
| #include <net/ip6_checksum.h> |
| #include <linux/microchipphy.h> |
| #include "lan78xx.h" |
| |
| #define DRIVER_AUTHOR "WOOJUNG HUH <woojung.huh@microchip.com>" |
| #define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices" |
| #define DRIVER_NAME "lan78xx" |
| #define DRIVER_VERSION "1.0.4" |
| |
| #define TX_TIMEOUT_JIFFIES (5 * HZ) |
| #define THROTTLE_JIFFIES (HZ / 8) |
| #define UNLINK_TIMEOUT_MS 3 |
| |
| #define RX_MAX_QUEUE_MEMORY (60 * 1518) |
| |
| #define SS_USB_PKT_SIZE (1024) |
| #define HS_USB_PKT_SIZE (512) |
| #define FS_USB_PKT_SIZE (64) |
| |
| #define MAX_RX_FIFO_SIZE (12 * 1024) |
| #define MAX_TX_FIFO_SIZE (12 * 1024) |
| #define DEFAULT_BURST_CAP_SIZE (MAX_TX_FIFO_SIZE) |
| #define DEFAULT_BULK_IN_DELAY (0x0800) |
| #define MAX_SINGLE_PACKET_SIZE (9000) |
| #define DEFAULT_TX_CSUM_ENABLE (true) |
| #define DEFAULT_RX_CSUM_ENABLE (true) |
| #define DEFAULT_TSO_CSUM_ENABLE (true) |
| #define DEFAULT_VLAN_FILTER_ENABLE (true) |
| #define TX_OVERHEAD (8) |
| #define RXW_PADDING 2 |
| |
| #define LAN78XX_USB_VENDOR_ID (0x0424) |
| #define LAN7800_USB_PRODUCT_ID (0x7800) |
| #define LAN7850_USB_PRODUCT_ID (0x7850) |
| #define LAN78XX_EEPROM_MAGIC (0x78A5) |
| #define LAN78XX_OTP_MAGIC (0x78F3) |
| |
| #define MII_READ 1 |
| #define MII_WRITE 0 |
| |
| #define EEPROM_INDICATOR (0xA5) |
| #define EEPROM_MAC_OFFSET (0x01) |
| #define MAX_EEPROM_SIZE 512 |
| #define OTP_INDICATOR_1 (0xF3) |
| #define OTP_INDICATOR_2 (0xF7) |
| |
| #define WAKE_ALL (WAKE_PHY | WAKE_UCAST | \ |
| WAKE_MCAST | WAKE_BCAST | \ |
| WAKE_ARP | WAKE_MAGIC) |
| |
| /* USB related defines */ |
| #define BULK_IN_PIPE 1 |
| #define BULK_OUT_PIPE 2 |
| |
| /* default autosuspend delay (mSec)*/ |
| #define DEFAULT_AUTOSUSPEND_DELAY (10 * 1000) |
| |
| /* statistic update interval (mSec) */ |
| #define STAT_UPDATE_TIMER (1 * 1000) |
| |
| static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = { |
| "RX FCS Errors", |
| "RX Alignment Errors", |
| "Rx Fragment Errors", |
| "RX Jabber Errors", |
| "RX Undersize Frame Errors", |
| "RX Oversize Frame Errors", |
| "RX Dropped Frames", |
| "RX Unicast Byte Count", |
| "RX Broadcast Byte Count", |
| "RX Multicast Byte Count", |
| "RX Unicast Frames", |
| "RX Broadcast Frames", |
| "RX Multicast Frames", |
| "RX Pause Frames", |
| "RX 64 Byte Frames", |
| "RX 65 - 127 Byte Frames", |
| "RX 128 - 255 Byte Frames", |
| "RX 256 - 511 Bytes Frames", |
| "RX 512 - 1023 Byte Frames", |
| "RX 1024 - 1518 Byte Frames", |
| "RX Greater 1518 Byte Frames", |
| "EEE RX LPI Transitions", |
| "EEE RX LPI Time", |
| "TX FCS Errors", |
| "TX Excess Deferral Errors", |
| "TX Carrier Errors", |
| "TX Bad Byte Count", |
| "TX Single Collisions", |
| "TX Multiple Collisions", |
| "TX Excessive Collision", |
| "TX Late Collisions", |
| "TX Unicast Byte Count", |
| "TX Broadcast Byte Count", |
| "TX Multicast Byte Count", |
| "TX Unicast Frames", |
| "TX Broadcast Frames", |
| "TX Multicast Frames", |
| "TX Pause Frames", |
| "TX 64 Byte Frames", |
| "TX 65 - 127 Byte Frames", |
| "TX 128 - 255 Byte Frames", |
| "TX 256 - 511 Bytes Frames", |
| "TX 512 - 1023 Byte Frames", |
| "TX 1024 - 1518 Byte Frames", |
| "TX Greater 1518 Byte Frames", |
| "EEE TX LPI Transitions", |
| "EEE TX LPI Time", |
| }; |
| |
| struct lan78xx_statstage { |
| u32 rx_fcs_errors; |
| u32 rx_alignment_errors; |
| u32 rx_fragment_errors; |
| u32 rx_jabber_errors; |
| u32 rx_undersize_frame_errors; |
| u32 rx_oversize_frame_errors; |
| u32 rx_dropped_frames; |
| u32 rx_unicast_byte_count; |
| u32 rx_broadcast_byte_count; |
| u32 rx_multicast_byte_count; |
| u32 rx_unicast_frames; |
| u32 rx_broadcast_frames; |
| u32 rx_multicast_frames; |
| u32 rx_pause_frames; |
| u32 rx_64_byte_frames; |
| u32 rx_65_127_byte_frames; |
| u32 rx_128_255_byte_frames; |
| u32 rx_256_511_bytes_frames; |
| u32 rx_512_1023_byte_frames; |
| u32 rx_1024_1518_byte_frames; |
| u32 rx_greater_1518_byte_frames; |
| u32 eee_rx_lpi_transitions; |
| u32 eee_rx_lpi_time; |
| u32 tx_fcs_errors; |
| u32 tx_excess_deferral_errors; |
| u32 tx_carrier_errors; |
| u32 tx_bad_byte_count; |
| u32 tx_single_collisions; |
| u32 tx_multiple_collisions; |
| u32 tx_excessive_collision; |
| u32 tx_late_collisions; |
| u32 tx_unicast_byte_count; |
| u32 tx_broadcast_byte_count; |
| u32 tx_multicast_byte_count; |
| u32 tx_unicast_frames; |
| u32 tx_broadcast_frames; |
| u32 tx_multicast_frames; |
| u32 tx_pause_frames; |
| u32 tx_64_byte_frames; |
| u32 tx_65_127_byte_frames; |
| u32 tx_128_255_byte_frames; |
| u32 tx_256_511_bytes_frames; |
| u32 tx_512_1023_byte_frames; |
| u32 tx_1024_1518_byte_frames; |
| u32 tx_greater_1518_byte_frames; |
| u32 eee_tx_lpi_transitions; |
| u32 eee_tx_lpi_time; |
| }; |
| |
| struct lan78xx_statstage64 { |
| u64 rx_fcs_errors; |
| u64 rx_alignment_errors; |
| u64 rx_fragment_errors; |
| u64 rx_jabber_errors; |
| u64 rx_undersize_frame_errors; |
| u64 rx_oversize_frame_errors; |
| u64 rx_dropped_frames; |
| u64 rx_unicast_byte_count; |
| u64 rx_broadcast_byte_count; |
| u64 rx_multicast_byte_count; |
| u64 rx_unicast_frames; |
| u64 rx_broadcast_frames; |
| u64 rx_multicast_frames; |
| u64 rx_pause_frames; |
| u64 rx_64_byte_frames; |
| u64 rx_65_127_byte_frames; |
| u64 rx_128_255_byte_frames; |
| u64 rx_256_511_bytes_frames; |
| u64 rx_512_1023_byte_frames; |
| u64 rx_1024_1518_byte_frames; |
| u64 rx_greater_1518_byte_frames; |
| u64 eee_rx_lpi_transitions; |
| u64 eee_rx_lpi_time; |
| u64 tx_fcs_errors; |
| u64 tx_excess_deferral_errors; |
| u64 tx_carrier_errors; |
| u64 tx_bad_byte_count; |
| u64 tx_single_collisions; |
| u64 tx_multiple_collisions; |
| u64 tx_excessive_collision; |
| u64 tx_late_collisions; |
| u64 tx_unicast_byte_count; |
| u64 tx_broadcast_byte_count; |
| u64 tx_multicast_byte_count; |
| u64 tx_unicast_frames; |
| u64 tx_broadcast_frames; |
| u64 tx_multicast_frames; |
| u64 tx_pause_frames; |
| u64 tx_64_byte_frames; |
| u64 tx_65_127_byte_frames; |
| u64 tx_128_255_byte_frames; |
| u64 tx_256_511_bytes_frames; |
| u64 tx_512_1023_byte_frames; |
| u64 tx_1024_1518_byte_frames; |
| u64 tx_greater_1518_byte_frames; |
| u64 eee_tx_lpi_transitions; |
| u64 eee_tx_lpi_time; |
| }; |
| |
| struct lan78xx_net; |
| |
| struct lan78xx_priv { |
| struct lan78xx_net *dev; |
| u32 rfe_ctl; |
| u32 mchash_table[DP_SEL_VHF_HASH_LEN]; /* multicat hash table */ |
| u32 pfilter_table[NUM_OF_MAF][2]; /* perfect filter table */ |
| u32 vlan_table[DP_SEL_VHF_VLAN_LEN]; |
| struct mutex dataport_mutex; /* for dataport access */ |
| spinlock_t rfe_ctl_lock; /* for rfe register access */ |
| struct work_struct set_multicast; |
| struct work_struct set_vlan; |
| u32 wol; |
| }; |
| |
| enum skb_state { |
| illegal = 0, |
| tx_start, |
| tx_done, |
| rx_start, |
| rx_done, |
| rx_cleanup, |
| unlink_start |
| }; |
| |
| struct skb_data { /* skb->cb is one of these */ |
| struct urb *urb; |
| struct lan78xx_net *dev; |
| enum skb_state state; |
| size_t length; |
| }; |
| |
| struct usb_context { |
| struct usb_ctrlrequest req; |
| struct lan78xx_net *dev; |
| }; |
| |
| #define EVENT_TX_HALT 0 |
| #define EVENT_RX_HALT 1 |
| #define EVENT_RX_MEMORY 2 |
| #define EVENT_STS_SPLIT 3 |
| #define EVENT_LINK_RESET 4 |
| #define EVENT_RX_PAUSED 5 |
| #define EVENT_DEV_WAKING 6 |
| #define EVENT_DEV_ASLEEP 7 |
| #define EVENT_DEV_OPEN 8 |
| #define EVENT_STAT_UPDATE 9 |
| |
| struct statstage { |
| struct mutex access_lock; /* for stats access */ |
| struct lan78xx_statstage saved; |
| struct lan78xx_statstage rollover_count; |
| struct lan78xx_statstage rollover_max; |
| struct lan78xx_statstage64 curr_stat; |
| }; |
| |
| struct lan78xx_net { |
| struct net_device *net; |
| struct usb_device *udev; |
| struct usb_interface *intf; |
| void *driver_priv; |
| |
| int rx_qlen; |
| int tx_qlen; |
| struct sk_buff_head rxq; |
| struct sk_buff_head txq; |
| struct sk_buff_head done; |
| struct sk_buff_head rxq_pause; |
| struct sk_buff_head txq_pend; |
| |
| struct tasklet_struct bh; |
| struct delayed_work wq; |
| |
| struct usb_host_endpoint *ep_blkin; |
| struct usb_host_endpoint *ep_blkout; |
| struct usb_host_endpoint *ep_intr; |
| |
| int msg_enable; |
| |
| struct urb *urb_intr; |
| struct usb_anchor deferred; |
| |
| struct mutex phy_mutex; /* for phy access */ |
| unsigned pipe_in, pipe_out, pipe_intr; |
| |
| u32 hard_mtu; /* count any extra framing */ |
| size_t rx_urb_size; /* size for rx urbs */ |
| |
| unsigned long flags; |
| |
| wait_queue_head_t *wait; |
| unsigned char suspend_count; |
| |
| unsigned maxpacket; |
| struct timer_list delay; |
| struct timer_list stat_monitor; |
| |
| unsigned long data[5]; |
| |
| int link_on; |
| u8 mdix_ctrl; |
| |
| u32 chipid; |
| u32 chiprev; |
| struct mii_bus *mdiobus; |
| |
| int fc_autoneg; |
| u8 fc_request_control; |
| |
| int delta; |
| struct statstage stats; |
| }; |
| |
| /* use ethtool to change the level for any given device */ |
| static int msg_level = -1; |
| module_param(msg_level, int, 0); |
| MODULE_PARM_DESC(msg_level, "Override default message level"); |
| |
| static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data) |
| { |
| u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL); |
| int ret; |
| |
| if (!buf) |
| return -ENOMEM; |
| |
| ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), |
| USB_VENDOR_REQUEST_READ_REGISTER, |
| USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 0, index, buf, 4, USB_CTRL_GET_TIMEOUT); |
| if (likely(ret >= 0)) { |
| le32_to_cpus(buf); |
| *data = *buf; |
| } else { |
| netdev_warn(dev->net, |
| "Failed to read register index 0x%08x. ret = %d", |
| index, ret); |
| } |
| |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data) |
| { |
| u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL); |
| int ret; |
| |
| if (!buf) |
| return -ENOMEM; |
| |
| *buf = data; |
| cpu_to_le32s(buf); |
| |
| ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), |
| USB_VENDOR_REQUEST_WRITE_REGISTER, |
| USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 0, index, buf, 4, USB_CTRL_SET_TIMEOUT); |
| if (unlikely(ret < 0)) { |
| netdev_warn(dev->net, |
| "Failed to write register index 0x%08x. ret = %d", |
| index, ret); |
| } |
| |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| static int lan78xx_read_stats(struct lan78xx_net *dev, |
| struct lan78xx_statstage *data) |
| { |
| int ret = 0; |
| int i; |
| struct lan78xx_statstage *stats; |
| u32 *src; |
| u32 *dst; |
| |
| stats = kmalloc(sizeof(*stats), GFP_KERNEL); |
| if (!stats) |
| return -ENOMEM; |
| |
| ret = usb_control_msg(dev->udev, |
| usb_rcvctrlpipe(dev->udev, 0), |
| USB_VENDOR_REQUEST_GET_STATS, |
| USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 0, |
| 0, |
| (void *)stats, |
| sizeof(*stats), |
| USB_CTRL_SET_TIMEOUT); |
| if (likely(ret >= 0)) { |
| src = (u32 *)stats; |
| dst = (u32 *)data; |
| for (i = 0; i < sizeof(*stats)/sizeof(u32); i++) { |
| le32_to_cpus(&src[i]); |
| dst[i] = src[i]; |
| } |
| } else { |
| netdev_warn(dev->net, |
| "Failed to read stat ret = 0x%x", ret); |
| } |
| |
| kfree(stats); |
| |
| return ret; |
| } |
| |
| #define check_counter_rollover(struct1, dev_stats, member) { \ |
| if (struct1->member < dev_stats.saved.member) \ |
| dev_stats.rollover_count.member++; \ |
| } |
| |
| static void lan78xx_check_stat_rollover(struct lan78xx_net *dev, |
| struct lan78xx_statstage *stats) |
| { |
| check_counter_rollover(stats, dev->stats, rx_fcs_errors); |
| check_counter_rollover(stats, dev->stats, rx_alignment_errors); |
| check_counter_rollover(stats, dev->stats, rx_fragment_errors); |
| check_counter_rollover(stats, dev->stats, rx_jabber_errors); |
| check_counter_rollover(stats, dev->stats, rx_undersize_frame_errors); |
| check_counter_rollover(stats, dev->stats, rx_oversize_frame_errors); |
| check_counter_rollover(stats, dev->stats, rx_dropped_frames); |
| check_counter_rollover(stats, dev->stats, rx_unicast_byte_count); |
| check_counter_rollover(stats, dev->stats, rx_broadcast_byte_count); |
| check_counter_rollover(stats, dev->stats, rx_multicast_byte_count); |
| check_counter_rollover(stats, dev->stats, rx_unicast_frames); |
| check_counter_rollover(stats, dev->stats, rx_broadcast_frames); |
| check_counter_rollover(stats, dev->stats, rx_multicast_frames); |
| check_counter_rollover(stats, dev->stats, rx_pause_frames); |
| check_counter_rollover(stats, dev->stats, rx_64_byte_frames); |
| check_counter_rollover(stats, dev->stats, rx_65_127_byte_frames); |
| check_counter_rollover(stats, dev->stats, rx_128_255_byte_frames); |
| check_counter_rollover(stats, dev->stats, rx_256_511_bytes_frames); |
| check_counter_rollover(stats, dev->stats, rx_512_1023_byte_frames); |
| check_counter_rollover(stats, dev->stats, rx_1024_1518_byte_frames); |
| check_counter_rollover(stats, dev->stats, rx_greater_1518_byte_frames); |
| check_counter_rollover(stats, dev->stats, eee_rx_lpi_transitions); |
| check_counter_rollover(stats, dev->stats, eee_rx_lpi_time); |
| check_counter_rollover(stats, dev->stats, tx_fcs_errors); |
| check_counter_rollover(stats, dev->stats, tx_excess_deferral_errors); |
| check_counter_rollover(stats, dev->stats, tx_carrier_errors); |
| check_counter_rollover(stats, dev->stats, tx_bad_byte_count); |
| check_counter_rollover(stats, dev->stats, tx_single_collisions); |
| check_counter_rollover(stats, dev->stats, tx_multiple_collisions); |
| check_counter_rollover(stats, dev->stats, tx_excessive_collision); |
| check_counter_rollover(stats, dev->stats, tx_late_collisions); |
| check_counter_rollover(stats, dev->stats, tx_unicast_byte_count); |
| check_counter_rollover(stats, dev->stats, tx_broadcast_byte_count); |
| check_counter_rollover(stats, dev->stats, tx_multicast_byte_count); |
| check_counter_rollover(stats, dev->stats, tx_unicast_frames); |
| check_counter_rollover(stats, dev->stats, tx_broadcast_frames); |
| check_counter_rollover(stats, dev->stats, tx_multicast_frames); |
| check_counter_rollover(stats, dev->stats, tx_pause_frames); |
| check_counter_rollover(stats, dev->stats, tx_64_byte_frames); |
| check_counter_rollover(stats, dev->stats, tx_65_127_byte_frames); |
| check_counter_rollover(stats, dev->stats, tx_128_255_byte_frames); |
| check_counter_rollover(stats, dev->stats, tx_256_511_bytes_frames); |
| check_counter_rollover(stats, dev->stats, tx_512_1023_byte_frames); |
| check_counter_rollover(stats, dev->stats, tx_1024_1518_byte_frames); |
| check_counter_rollover(stats, dev->stats, tx_greater_1518_byte_frames); |
| check_counter_rollover(stats, dev->stats, eee_tx_lpi_transitions); |
| check_counter_rollover(stats, dev->stats, eee_tx_lpi_time); |
| |
| memcpy(&dev->stats.saved, stats, sizeof(struct lan78xx_statstage)); |
| } |
| |
| static void lan78xx_update_stats(struct lan78xx_net *dev) |
| { |
| u32 *p, *count, *max; |
| u64 *data; |
| int i; |
| struct lan78xx_statstage lan78xx_stats; |
| |
| if (usb_autopm_get_interface(dev->intf) < 0) |
| return; |
| |
| p = (u32 *)&lan78xx_stats; |
| count = (u32 *)&dev->stats.rollover_count; |
| max = (u32 *)&dev->stats.rollover_max; |
| data = (u64 *)&dev->stats.curr_stat; |
| |
| mutex_lock(&dev->stats.access_lock); |
| |
| if (lan78xx_read_stats(dev, &lan78xx_stats) > 0) |
| lan78xx_check_stat_rollover(dev, &lan78xx_stats); |
| |
| for (i = 0; i < (sizeof(lan78xx_stats) / (sizeof(u32))); i++) |
| data[i] = (u64)p[i] + ((u64)count[i] * ((u64)max[i] + 1)); |
| |
| mutex_unlock(&dev->stats.access_lock); |
| |
| usb_autopm_put_interface(dev->intf); |
| } |
| |
| /* Loop until the read is completed with timeout called with phy_mutex held */ |
| static int lan78xx_phy_wait_not_busy(struct lan78xx_net *dev) |
| { |
| unsigned long start_time = jiffies; |
| u32 val; |
| int ret; |
| |
| do { |
| ret = lan78xx_read_reg(dev, MII_ACC, &val); |
| if (unlikely(ret < 0)) |
| return -EIO; |
| |
| if (!(val & MII_ACC_MII_BUSY_)) |
| return 0; |
| } while (!time_after(jiffies, start_time + HZ)); |
| |
| return -EIO; |
| } |
| |
| static inline u32 mii_access(int id, int index, int read) |
| { |
| u32 ret; |
| |
| ret = ((u32)id << MII_ACC_PHY_ADDR_SHIFT_) & MII_ACC_PHY_ADDR_MASK_; |
| ret |= ((u32)index << MII_ACC_MIIRINDA_SHIFT_) & MII_ACC_MIIRINDA_MASK_; |
| if (read) |
| ret |= MII_ACC_MII_READ_; |
| else |
| ret |= MII_ACC_MII_WRITE_; |
| ret |= MII_ACC_MII_BUSY_; |
| |
| return ret; |
| } |
| |
| static int lan78xx_wait_eeprom(struct lan78xx_net *dev) |
| { |
| unsigned long start_time = jiffies; |
| u32 val; |
| int ret; |
| |
| do { |
| ret = lan78xx_read_reg(dev, E2P_CMD, &val); |
| if (unlikely(ret < 0)) |
| return -EIO; |
| |
| if (!(val & E2P_CMD_EPC_BUSY_) || |
| (val & E2P_CMD_EPC_TIMEOUT_)) |
| break; |
| usleep_range(40, 100); |
| } while (!time_after(jiffies, start_time + HZ)); |
| |
| if (val & (E2P_CMD_EPC_TIMEOUT_ | E2P_CMD_EPC_BUSY_)) { |
| netdev_warn(dev->net, "EEPROM read operation timeout"); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static int lan78xx_eeprom_confirm_not_busy(struct lan78xx_net *dev) |
| { |
| unsigned long start_time = jiffies; |
| u32 val; |
| int ret; |
| |
| do { |
| ret = lan78xx_read_reg(dev, E2P_CMD, &val); |
| if (unlikely(ret < 0)) |
| return -EIO; |
| |
| if (!(val & E2P_CMD_EPC_BUSY_)) |
| return 0; |
| |
| usleep_range(40, 100); |
| } while (!time_after(jiffies, start_time + HZ)); |
| |
| netdev_warn(dev->net, "EEPROM is busy"); |
| return -EIO; |
| } |
| |
| static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset, |
| u32 length, u8 *data) |
| { |
| u32 val; |
| u32 saved; |
| int i, ret; |
| int retval; |
| |
| /* depends on chip, some EEPROM pins are muxed with LED function. |
| * disable & restore LED function to access EEPROM. |
| */ |
| ret = lan78xx_read_reg(dev, HW_CFG, &val); |
| saved = val; |
| if (dev->chipid == ID_REV_CHIP_ID_7800_) { |
| val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); |
| ret = lan78xx_write_reg(dev, HW_CFG, val); |
| } |
| |
| retval = lan78xx_eeprom_confirm_not_busy(dev); |
| if (retval) |
| return retval; |
| |
| for (i = 0; i < length; i++) { |
| val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_; |
| val |= (offset & E2P_CMD_EPC_ADDR_MASK_); |
| ret = lan78xx_write_reg(dev, E2P_CMD, val); |
| if (unlikely(ret < 0)) { |
| retval = -EIO; |
| goto exit; |
| } |
| |
| retval = lan78xx_wait_eeprom(dev); |
| if (retval < 0) |
| goto exit; |
| |
| ret = lan78xx_read_reg(dev, E2P_DATA, &val); |
| if (unlikely(ret < 0)) { |
| retval = -EIO; |
| goto exit; |
| } |
| |
| data[i] = val & 0xFF; |
| offset++; |
| } |
| |
| retval = 0; |
| exit: |
| if (dev->chipid == ID_REV_CHIP_ID_7800_) |
| ret = lan78xx_write_reg(dev, HW_CFG, saved); |
| |
| return retval; |
| } |
| |
| static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset, |
| u32 length, u8 *data) |
| { |
| u8 sig; |
| int ret; |
| |
| ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig); |
| if ((ret == 0) && (sig == EEPROM_INDICATOR)) |
| ret = lan78xx_read_raw_eeprom(dev, offset, length, data); |
| else |
| ret = -EINVAL; |
| |
| return ret; |
| } |
| |
| static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset, |
| u32 length, u8 *data) |
| { |
| u32 val; |
| u32 saved; |
| int i, ret; |
| int retval; |
| |
| /* depends on chip, some EEPROM pins are muxed with LED function. |
| * disable & restore LED function to access EEPROM. |
| */ |
| ret = lan78xx_read_reg(dev, HW_CFG, &val); |
| saved = val; |
| if (dev->chipid == ID_REV_CHIP_ID_7800_) { |
| val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); |
| ret = lan78xx_write_reg(dev, HW_CFG, val); |
| } |
| |
| retval = lan78xx_eeprom_confirm_not_busy(dev); |
| if (retval) |
| goto exit; |
| |
| /* Issue write/erase enable command */ |
| val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_; |
| ret = lan78xx_write_reg(dev, E2P_CMD, val); |
| if (unlikely(ret < 0)) { |
| retval = -EIO; |
| goto exit; |
| } |
| |
| retval = lan78xx_wait_eeprom(dev); |
| if (retval < 0) |
| goto exit; |
| |
| for (i = 0; i < length; i++) { |
| /* Fill data register */ |
| val = data[i]; |
| ret = lan78xx_write_reg(dev, E2P_DATA, val); |
| if (ret < 0) { |
| retval = -EIO; |
| goto exit; |
| } |
| |
| /* Send "write" command */ |
| val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_; |
| val |= (offset & E2P_CMD_EPC_ADDR_MASK_); |
| ret = lan78xx_write_reg(dev, E2P_CMD, val); |
| if (ret < 0) { |
| retval = -EIO; |
| goto exit; |
| } |
| |
| retval = lan78xx_wait_eeprom(dev); |
| if (retval < 0) |
| goto exit; |
| |
| offset++; |
| } |
| |
| retval = 0; |
| exit: |
| if (dev->chipid == ID_REV_CHIP_ID_7800_) |
| ret = lan78xx_write_reg(dev, HW_CFG, saved); |
| |
| return retval; |
| } |
| |
| static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset, |
| u32 length, u8 *data) |
| { |
| int i; |
| int ret; |
| u32 buf; |
| unsigned long timeout; |
| |
| ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); |
| |
| if (buf & OTP_PWR_DN_PWRDN_N_) { |
| /* clear it and wait to be cleared */ |
| ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0); |
| |
| timeout = jiffies + HZ; |
| do { |
| usleep_range(1, 10); |
| ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); |
| if (time_after(jiffies, timeout)) { |
| netdev_warn(dev->net, |
| "timeout on OTP_PWR_DN"); |
| return -EIO; |
| } |
| } while (buf & OTP_PWR_DN_PWRDN_N_); |
| } |
| |
| for (i = 0; i < length; i++) { |
| ret = lan78xx_write_reg(dev, OTP_ADDR1, |
| ((offset + i) >> 8) & OTP_ADDR1_15_11); |
| ret = lan78xx_write_reg(dev, OTP_ADDR2, |
| ((offset + i) & OTP_ADDR2_10_3)); |
| |
| ret = lan78xx_write_reg(dev, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_); |
| ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); |
| |
| timeout = jiffies + HZ; |
| do { |
| udelay(1); |
| ret = lan78xx_read_reg(dev, OTP_STATUS, &buf); |
| if (time_after(jiffies, timeout)) { |
| netdev_warn(dev->net, |
| "timeout on OTP_STATUS"); |
| return -EIO; |
| } |
| } while (buf & OTP_STATUS_BUSY_); |
| |
| ret = lan78xx_read_reg(dev, OTP_RD_DATA, &buf); |
| |
| data[i] = (u8)(buf & 0xFF); |
| } |
| |
| return 0; |
| } |
| |
| static int lan78xx_write_raw_otp(struct lan78xx_net *dev, u32 offset, |
| u32 length, u8 *data) |
| { |
| int i; |
| int ret; |
| u32 buf; |
| unsigned long timeout; |
| |
| ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); |
| |
| if (buf & OTP_PWR_DN_PWRDN_N_) { |
| /* clear it and wait to be cleared */ |
| ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0); |
| |
| timeout = jiffies + HZ; |
| do { |
| udelay(1); |
| ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); |
| if (time_after(jiffies, timeout)) { |
| netdev_warn(dev->net, |
| "timeout on OTP_PWR_DN completion"); |
| return -EIO; |
| } |
| } while (buf & OTP_PWR_DN_PWRDN_N_); |
| } |
| |
| /* set to BYTE program mode */ |
| ret = lan78xx_write_reg(dev, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_); |
| |
| for (i = 0; i < length; i++) { |
| ret = lan78xx_write_reg(dev, OTP_ADDR1, |
| ((offset + i) >> 8) & OTP_ADDR1_15_11); |
| ret = lan78xx_write_reg(dev, OTP_ADDR2, |
| ((offset + i) & OTP_ADDR2_10_3)); |
| ret = lan78xx_write_reg(dev, OTP_PRGM_DATA, data[i]); |
| ret = lan78xx_write_reg(dev, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_); |
| ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); |
| |
| timeout = jiffies + HZ; |
| do { |
| udelay(1); |
| ret = lan78xx_read_reg(dev, OTP_STATUS, &buf); |
| if (time_after(jiffies, timeout)) { |
| netdev_warn(dev->net, |
| "Timeout on OTP_STATUS completion"); |
| return -EIO; |
| } |
| } while (buf & OTP_STATUS_BUSY_); |
| } |
| |
| return 0; |
| } |
| |
| static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset, |
| u32 length, u8 *data) |
| { |
| u8 sig; |
| int ret; |
| |
| ret = lan78xx_read_raw_otp(dev, 0, 1, &sig); |
| |
| if (ret == 0) { |
| if (sig == OTP_INDICATOR_1) |
| offset = offset; |
| else if (sig == OTP_INDICATOR_2) |
| offset += 0x100; |
| else |
| ret = -EINVAL; |
| ret = lan78xx_read_raw_otp(dev, offset, length, data); |
| } |
| |
| return ret; |
| } |
| |
| static int lan78xx_dataport_wait_not_busy(struct lan78xx_net *dev) |
| { |
| int i, ret; |
| |
| for (i = 0; i < 100; i++) { |
| u32 dp_sel; |
| |
| ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel); |
| if (unlikely(ret < 0)) |
| return -EIO; |
| |
| if (dp_sel & DP_SEL_DPRDY_) |
| return 0; |
| |
| usleep_range(40, 100); |
| } |
| |
| netdev_warn(dev->net, "lan78xx_dataport_wait_not_busy timed out"); |
| |
| return -EIO; |
| } |
| |
| static int lan78xx_dataport_write(struct lan78xx_net *dev, u32 ram_select, |
| u32 addr, u32 length, u32 *buf) |
| { |
| struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| u32 dp_sel; |
| int i, ret; |
| |
| if (usb_autopm_get_interface(dev->intf) < 0) |
| return 0; |
| |
| mutex_lock(&pdata->dataport_mutex); |
| |
| ret = lan78xx_dataport_wait_not_busy(dev); |
| if (ret < 0) |
| goto done; |
| |
| ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel); |
| |
| dp_sel &= ~DP_SEL_RSEL_MASK_; |
| dp_sel |= ram_select; |
| ret = lan78xx_write_reg(dev, DP_SEL, dp_sel); |
| |
| for (i = 0; i < length; i++) { |
| ret = lan78xx_write_reg(dev, DP_ADDR, addr + i); |
| |
| ret = lan78xx_write_reg(dev, DP_DATA, buf[i]); |
| |
| ret = lan78xx_write_reg(dev, DP_CMD, DP_CMD_WRITE_); |
| |
| ret = lan78xx_dataport_wait_not_busy(dev); |
| if (ret < 0) |
| goto done; |
| } |
| |
| done: |
| mutex_unlock(&pdata->dataport_mutex); |
| usb_autopm_put_interface(dev->intf); |
| |
| return ret; |
| } |
| |
| static void lan78xx_set_addr_filter(struct lan78xx_priv *pdata, |
| int index, u8 addr[ETH_ALEN]) |
| { |
| u32 temp; |
| |
| if ((pdata) && (index > 0) && (index < NUM_OF_MAF)) { |
| temp = addr[3]; |
| temp = addr[2] | (temp << 8); |
| temp = addr[1] | (temp << 8); |
| temp = addr[0] | (temp << 8); |
| pdata->pfilter_table[index][1] = temp; |
| temp = addr[5]; |
| temp = addr[4] | (temp << 8); |
| temp |= MAF_HI_VALID_ | MAF_HI_TYPE_DST_; |
| pdata->pfilter_table[index][0] = temp; |
| } |
| } |
| |
| /* returns hash bit number for given MAC address */ |
| static inline u32 lan78xx_hash(char addr[ETH_ALEN]) |
| { |
| return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; |
| } |
| |
| static void lan78xx_deferred_multicast_write(struct work_struct *param) |
| { |
| struct lan78xx_priv *pdata = |
| container_of(param, struct lan78xx_priv, set_multicast); |
| struct lan78xx_net *dev = pdata->dev; |
| int i; |
| int ret; |
| |
| netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", |
| pdata->rfe_ctl); |
| |
| lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, DP_SEL_VHF_VLAN_LEN, |
| DP_SEL_VHF_HASH_LEN, pdata->mchash_table); |
| |
| for (i = 1; i < NUM_OF_MAF; i++) { |
| ret = lan78xx_write_reg(dev, MAF_HI(i), 0); |
| ret = lan78xx_write_reg(dev, MAF_LO(i), |
| pdata->pfilter_table[i][1]); |
| ret = lan78xx_write_reg(dev, MAF_HI(i), |
| pdata->pfilter_table[i][0]); |
| } |
| |
| ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); |
| } |
| |
| static void lan78xx_set_multicast(struct net_device *netdev) |
| { |
| struct lan78xx_net *dev = netdev_priv(netdev); |
| struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| unsigned long flags; |
| int i; |
| |
| spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); |
| |
| pdata->rfe_ctl &= ~(RFE_CTL_UCAST_EN_ | RFE_CTL_MCAST_EN_ | |
| RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); |
| |
| for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) |
| pdata->mchash_table[i] = 0; |
| /* pfilter_table[0] has own HW address */ |
| for (i = 1; i < NUM_OF_MAF; i++) { |
| pdata->pfilter_table[i][0] = |
| pdata->pfilter_table[i][1] = 0; |
| } |
| |
| pdata->rfe_ctl |= RFE_CTL_BCAST_EN_; |
| |
| if (dev->net->flags & IFF_PROMISC) { |
| netif_dbg(dev, drv, dev->net, "promiscuous mode enabled"); |
| pdata->rfe_ctl |= RFE_CTL_MCAST_EN_ | RFE_CTL_UCAST_EN_; |
| } else { |
| if (dev->net->flags & IFF_ALLMULTI) { |
| netif_dbg(dev, drv, dev->net, |
| "receive all multicast enabled"); |
| pdata->rfe_ctl |= RFE_CTL_MCAST_EN_; |
| } |
| } |
| |
| if (netdev_mc_count(dev->net)) { |
| struct netdev_hw_addr *ha; |
| int i; |
| |
| netif_dbg(dev, drv, dev->net, "receive multicast hash filter"); |
| |
| pdata->rfe_ctl |= RFE_CTL_DA_PERFECT_; |
| |
| i = 1; |
| netdev_for_each_mc_addr(ha, netdev) { |
| /* set first 32 into Perfect Filter */ |
| if (i < 33) { |
| lan78xx_set_addr_filter(pdata, i, ha->addr); |
| } else { |
| u32 bitnum = lan78xx_hash(ha->addr); |
| |
| pdata->mchash_table[bitnum / 32] |= |
| (1 << (bitnum % 32)); |
| pdata->rfe_ctl |= RFE_CTL_MCAST_HASH_; |
| } |
| i++; |
| } |
| } |
| |
| spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); |
| |
| /* defer register writes to a sleepable context */ |
| schedule_work(&pdata->set_multicast); |
| } |
| |
| static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex, |
| u16 lcladv, u16 rmtadv) |
| { |
| u32 flow = 0, fct_flow = 0; |
| int ret; |
| u8 cap; |
| |
| if (dev->fc_autoneg) |
| cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); |
| else |
| cap = dev->fc_request_control; |
| |
| if (cap & FLOW_CTRL_TX) |
| flow |= (FLOW_CR_TX_FCEN_ | 0xFFFF); |
| |
| if (cap & FLOW_CTRL_RX) |
| flow |= FLOW_CR_RX_FCEN_; |
| |
| if (dev->udev->speed == USB_SPEED_SUPER) |
| fct_flow = 0x817; |
| else if (dev->udev->speed == USB_SPEED_HIGH) |
| fct_flow = 0x211; |
| |
| netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s", |
| (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), |
| (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); |
| |
| ret = lan78xx_write_reg(dev, FCT_FLOW, fct_flow); |
| |
| /* threshold value should be set before enabling flow */ |
| ret = lan78xx_write_reg(dev, FLOW, flow); |
| |
| return 0; |
| } |
| |
| static int lan78xx_link_reset(struct lan78xx_net *dev) |
| { |
| struct phy_device *phydev = dev->net->phydev; |
| struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; |
| int ladv, radv, ret; |
| u32 buf; |
| |
| /* clear PHY interrupt status */ |
| ret = phy_read(phydev, LAN88XX_INT_STS); |
| if (unlikely(ret < 0)) |
| return -EIO; |
| |
| /* clear LAN78xx interrupt status */ |
| ret = lan78xx_write_reg(dev, INT_STS, INT_STS_PHY_INT_); |
| if (unlikely(ret < 0)) |
| return -EIO; |
| |
| phy_read_status(phydev); |
| |
| if (!phydev->link && dev->link_on) { |
| dev->link_on = false; |
| |
| /* reset MAC */ |
| ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
| if (unlikely(ret < 0)) |
| return -EIO; |
| buf |= MAC_CR_RST_; |
| ret = lan78xx_write_reg(dev, MAC_CR, buf); |
| if (unlikely(ret < 0)) |
| return -EIO; |
| |
| phy_mac_interrupt(phydev, 0); |
| |
| del_timer(&dev->stat_monitor); |
| } else if (phydev->link && !dev->link_on) { |
| dev->link_on = true; |
| |
| phy_ethtool_gset(phydev, &ecmd); |
| |
| ret = phy_read(phydev, LAN88XX_INT_STS); |
| |
| if (dev->udev->speed == USB_SPEED_SUPER) { |
| if (ethtool_cmd_speed(&ecmd) == 1000) { |
| /* disable U2 */ |
| ret = lan78xx_read_reg(dev, USB_CFG1, &buf); |
| buf &= ~USB_CFG1_DEV_U2_INIT_EN_; |
| ret = lan78xx_write_reg(dev, USB_CFG1, buf); |
| /* enable U1 */ |
| ret = lan78xx_read_reg(dev, USB_CFG1, &buf); |
| buf |= USB_CFG1_DEV_U1_INIT_EN_; |
| ret = lan78xx_write_reg(dev, USB_CFG1, buf); |
| } else { |
| /* enable U1 & U2 */ |
| ret = lan78xx_read_reg(dev, USB_CFG1, &buf); |
| buf |= USB_CFG1_DEV_U2_INIT_EN_; |
| buf |= USB_CFG1_DEV_U1_INIT_EN_; |
| ret = lan78xx_write_reg(dev, USB_CFG1, buf); |
| } |
| } |
| |
| ladv = phy_read(phydev, MII_ADVERTISE); |
| if (ladv < 0) |
| return ladv; |
| |
| radv = phy_read(phydev, MII_LPA); |
| if (radv < 0) |
| return radv; |
| |
| netif_dbg(dev, link, dev->net, |
| "speed: %u duplex: %d anadv: 0x%04x anlpa: 0x%04x", |
| ethtool_cmd_speed(&ecmd), ecmd.duplex, ladv, radv); |
| |
| ret = lan78xx_update_flowcontrol(dev, ecmd.duplex, ladv, radv); |
| phy_mac_interrupt(phydev, 1); |
| |
| if (!timer_pending(&dev->stat_monitor)) { |
| dev->delta = 1; |
| mod_timer(&dev->stat_monitor, |
| jiffies + STAT_UPDATE_TIMER); |
| } |
| } |
| |
| return ret; |
| } |
| |
| /* some work can't be done in tasklets, so we use keventd |
| * |
| * NOTE: annoying asymmetry: if it's active, schedule_work() fails, |
| * but tasklet_schedule() doesn't. hope the failure is rare. |
| */ |
| void lan78xx_defer_kevent(struct lan78xx_net *dev, int work) |
| { |
| set_bit(work, &dev->flags); |
| if (!schedule_delayed_work(&dev->wq, 0)) |
| netdev_err(dev->net, "kevent %d may have been dropped\n", work); |
| } |
| |
| static void lan78xx_status(struct lan78xx_net *dev, struct urb *urb) |
| { |
| u32 intdata; |
| |
| if (urb->actual_length != 4) { |
| netdev_warn(dev->net, |
| "unexpected urb length %d", urb->actual_length); |
| return; |
| } |
| |
| memcpy(&intdata, urb->transfer_buffer, 4); |
| le32_to_cpus(&intdata); |
| |
| if (intdata & INT_ENP_PHY_INT) { |
| netif_dbg(dev, link, dev->net, "PHY INTR: 0x%08x\n", intdata); |
| lan78xx_defer_kevent(dev, EVENT_LINK_RESET); |
| } else |
| netdev_warn(dev->net, |
| "unexpected interrupt: 0x%08x\n", intdata); |
| } |
| |
| static int lan78xx_ethtool_get_eeprom_len(struct net_device *netdev) |
| { |
| return MAX_EEPROM_SIZE; |
| } |
| |
| static int lan78xx_ethtool_get_eeprom(struct net_device *netdev, |
| struct ethtool_eeprom *ee, u8 *data) |
| { |
| struct lan78xx_net *dev = netdev_priv(netdev); |
| |
| ee->magic = LAN78XX_EEPROM_MAGIC; |
| |
| return lan78xx_read_raw_eeprom(dev, ee->offset, ee->len, data); |
| } |
| |
| static int lan78xx_ethtool_set_eeprom(struct net_device *netdev, |
| struct ethtool_eeprom *ee, u8 *data) |
| { |
| struct lan78xx_net *dev = netdev_priv(netdev); |
| |
| /* Allow entire eeprom update only */ |
| if ((ee->magic == LAN78XX_EEPROM_MAGIC) && |
| (ee->offset == 0) && |
| (ee->len == 512) && |
| (data[0] == EEPROM_INDICATOR)) |
| return lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data); |
| else if ((ee->magic == LAN78XX_OTP_MAGIC) && |
| (ee->offset == 0) && |
| (ee->len == 512) && |
| (data[0] == OTP_INDICATOR_1)) |
| return lan78xx_write_raw_otp(dev, ee->offset, ee->len, data); |
| |
| return -EINVAL; |
| } |
| |
| static void lan78xx_get_strings(struct net_device *netdev, u32 stringset, |
| u8 *data) |
| { |
| if (stringset == ETH_SS_STATS) |
| memcpy(data, lan78xx_gstrings, sizeof(lan78xx_gstrings)); |
| } |
| |
| static int lan78xx_get_sset_count(struct net_device *netdev, int sset) |
| { |
| if (sset == ETH_SS_STATS) |
| return ARRAY_SIZE(lan78xx_gstrings); |
| else |
| return -EOPNOTSUPP; |
| } |
| |
| static void lan78xx_get_stats(struct net_device *netdev, |
| struct ethtool_stats *stats, u64 *data) |
| { |
| struct lan78xx_net *dev = netdev_priv(netdev); |
| |
| lan78xx_update_stats(dev); |
| |
| mutex_lock(&dev->stats.access_lock); |
| memcpy(data, &dev->stats.curr_stat, sizeof(dev->stats.curr_stat)); |
| mutex_unlock(&dev->stats.access_lock); |
| } |
| |
| static void lan78xx_get_wol(struct net_device *netdev, |
| struct ethtool_wolinfo *wol) |
| { |
| struct lan78xx_net *dev = netdev_priv(netdev); |
| int ret; |
| u32 buf; |
| struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| |
| if (usb_autopm_get_interface(dev->intf) < 0) |
| return; |
| |
| ret = lan78xx_read_reg(dev, USB_CFG0, &buf); |
| if (unlikely(ret < 0)) { |
| wol->supported = 0; |
| wol->wolopts = 0; |
| } else { |
| if (buf & USB_CFG_RMT_WKP_) { |
| wol->supported = WAKE_ALL; |
| wol->wolopts = pdata->wol; |
| } else { |
| wol->supported = 0; |
| wol->wolopts = 0; |
| } |
| } |
| |
| usb_autopm_put_interface(dev->intf); |
| } |
| |
| static int lan78xx_set_wol(struct net_device *netdev, |
| struct ethtool_wolinfo *wol) |
| { |
| struct lan78xx_net *dev = netdev_priv(netdev); |
| struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| int ret; |
| |
| ret = usb_autopm_get_interface(dev->intf); |
| if (ret < 0) |
| return ret; |
| |
| pdata->wol = 0; |
| if (wol->wolopts & WAKE_UCAST) |
| pdata->wol |= WAKE_UCAST; |
| if (wol->wolopts & WAKE_MCAST) |
| pdata->wol |= WAKE_MCAST; |
| if (wol->wolopts & WAKE_BCAST) |
| pdata->wol |= WAKE_BCAST; |
| if (wol->wolopts & WAKE_MAGIC) |
| pdata->wol |= WAKE_MAGIC; |
| if (wol->wolopts & WAKE_PHY) |
| pdata->wol |= WAKE_PHY; |
| if (wol->wolopts & WAKE_ARP) |
| pdata->wol |= WAKE_ARP; |
| |
| device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts); |
| |
| phy_ethtool_set_wol(netdev->phydev, wol); |
| |
| usb_autopm_put_interface(dev->intf); |
| |
| return ret; |
| } |
| |
| static int lan78xx_get_eee(struct net_device *net, struct ethtool_eee *edata) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| struct phy_device *phydev = net->phydev; |
| int ret; |
| u32 buf; |
| |
| ret = usb_autopm_get_interface(dev->intf); |
| if (ret < 0) |
| return ret; |
| |
| ret = phy_ethtool_get_eee(phydev, edata); |
| if (ret < 0) |
| goto exit; |
| |
| ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
| if (buf & MAC_CR_EEE_EN_) { |
| edata->eee_enabled = true; |
| edata->eee_active = !!(edata->advertised & |
| edata->lp_advertised); |
| edata->tx_lpi_enabled = true; |
| /* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */ |
| ret = lan78xx_read_reg(dev, EEE_TX_LPI_REQ_DLY, &buf); |
| edata->tx_lpi_timer = buf; |
| } else { |
| edata->eee_enabled = false; |
| edata->eee_active = false; |
| edata->tx_lpi_enabled = false; |
| edata->tx_lpi_timer = 0; |
| } |
| |
| ret = 0; |
| exit: |
| usb_autopm_put_interface(dev->intf); |
| |
| return ret; |
| } |
| |
| static int lan78xx_set_eee(struct net_device *net, struct ethtool_eee *edata) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| int ret; |
| u32 buf; |
| |
| ret = usb_autopm_get_interface(dev->intf); |
| if (ret < 0) |
| return ret; |
| |
| if (edata->eee_enabled) { |
| ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
| buf |= MAC_CR_EEE_EN_; |
| ret = lan78xx_write_reg(dev, MAC_CR, buf); |
| |
| phy_ethtool_set_eee(net->phydev, edata); |
| |
| buf = (u32)edata->tx_lpi_timer; |
| ret = lan78xx_write_reg(dev, EEE_TX_LPI_REQ_DLY, buf); |
| } else { |
| ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
| buf &= ~MAC_CR_EEE_EN_; |
| ret = lan78xx_write_reg(dev, MAC_CR, buf); |
| } |
| |
| usb_autopm_put_interface(dev->intf); |
| |
| return 0; |
| } |
| |
| static u32 lan78xx_get_link(struct net_device *net) |
| { |
| phy_read_status(net->phydev); |
| |
| return net->phydev->link; |
| } |
| |
| int lan78xx_nway_reset(struct net_device *net) |
| { |
| return phy_start_aneg(net->phydev); |
| } |
| |
| static void lan78xx_get_drvinfo(struct net_device *net, |
| struct ethtool_drvinfo *info) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| |
| strncpy(info->driver, DRIVER_NAME, sizeof(info->driver)); |
| strncpy(info->version, DRIVER_VERSION, sizeof(info->version)); |
| usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); |
| } |
| |
| static u32 lan78xx_get_msglevel(struct net_device *net) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| |
| return dev->msg_enable; |
| } |
| |
| static void lan78xx_set_msglevel(struct net_device *net, u32 level) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| |
| dev->msg_enable = level; |
| } |
| |
| static int lan78xx_get_mdix_status(struct net_device *net) |
| { |
| struct phy_device *phydev = net->phydev; |
| int buf; |
| |
| phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, LAN88XX_EXT_PAGE_SPACE_1); |
| buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL); |
| phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, LAN88XX_EXT_PAGE_SPACE_0); |
| |
| return buf; |
| } |
| |
| static void lan78xx_set_mdix_status(struct net_device *net, __u8 mdix_ctrl) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| struct phy_device *phydev = net->phydev; |
| int buf; |
| |
| if (mdix_ctrl == ETH_TP_MDI) { |
| phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, |
| LAN88XX_EXT_PAGE_SPACE_1); |
| buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL); |
| buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_; |
| phy_write(phydev, LAN88XX_EXT_MODE_CTRL, |
| buf | LAN88XX_EXT_MODE_CTRL_MDI_); |
| phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, |
| LAN88XX_EXT_PAGE_SPACE_0); |
| } else if (mdix_ctrl == ETH_TP_MDI_X) { |
| phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, |
| LAN88XX_EXT_PAGE_SPACE_1); |
| buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL); |
| buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_; |
| phy_write(phydev, LAN88XX_EXT_MODE_CTRL, |
| buf | LAN88XX_EXT_MODE_CTRL_MDI_X_); |
| phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, |
| LAN88XX_EXT_PAGE_SPACE_0); |
| } else if (mdix_ctrl == ETH_TP_MDI_AUTO) { |
| phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, |
| LAN88XX_EXT_PAGE_SPACE_1); |
| buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL); |
| buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_; |
| phy_write(phydev, LAN88XX_EXT_MODE_CTRL, |
| buf | LAN88XX_EXT_MODE_CTRL_AUTO_MDIX_); |
| phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, |
| LAN88XX_EXT_PAGE_SPACE_0); |
| } |
| dev->mdix_ctrl = mdix_ctrl; |
| } |
| |
| static int lan78xx_get_settings(struct net_device *net, struct ethtool_cmd *cmd) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| struct phy_device *phydev = net->phydev; |
| int ret; |
| int buf; |
| |
| ret = usb_autopm_get_interface(dev->intf); |
| if (ret < 0) |
| return ret; |
| |
| ret = phy_ethtool_gset(phydev, cmd); |
| |
| buf = lan78xx_get_mdix_status(net); |
| |
| buf &= LAN88XX_EXT_MODE_CTRL_MDIX_MASK_; |
| if (buf == LAN88XX_EXT_MODE_CTRL_AUTO_MDIX_) { |
| cmd->eth_tp_mdix = ETH_TP_MDI_AUTO; |
| cmd->eth_tp_mdix_ctrl = ETH_TP_MDI_AUTO; |
| } else if (buf == LAN88XX_EXT_MODE_CTRL_MDI_) { |
| cmd->eth_tp_mdix = ETH_TP_MDI; |
| cmd->eth_tp_mdix_ctrl = ETH_TP_MDI; |
| } else if (buf == LAN88XX_EXT_MODE_CTRL_MDI_X_) { |
| cmd->eth_tp_mdix = ETH_TP_MDI_X; |
| cmd->eth_tp_mdix_ctrl = ETH_TP_MDI_X; |
| } |
| |
| usb_autopm_put_interface(dev->intf); |
| |
| return ret; |
| } |
| |
| static int lan78xx_set_settings(struct net_device *net, struct ethtool_cmd *cmd) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| struct phy_device *phydev = net->phydev; |
| int ret = 0; |
| int temp; |
| |
| ret = usb_autopm_get_interface(dev->intf); |
| if (ret < 0) |
| return ret; |
| |
| if (dev->mdix_ctrl != cmd->eth_tp_mdix_ctrl) { |
| lan78xx_set_mdix_status(net, cmd->eth_tp_mdix_ctrl); |
| } |
| |
| /* change speed & duplex */ |
| ret = phy_ethtool_sset(phydev, cmd); |
| |
| if (!cmd->autoneg) { |
| /* force link down */ |
| temp = phy_read(phydev, MII_BMCR); |
| phy_write(phydev, MII_BMCR, temp | BMCR_LOOPBACK); |
| mdelay(1); |
| phy_write(phydev, MII_BMCR, temp); |
| } |
| |
| usb_autopm_put_interface(dev->intf); |
| |
| return ret; |
| } |
| |
| static void lan78xx_get_pause(struct net_device *net, |
| struct ethtool_pauseparam *pause) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| struct phy_device *phydev = net->phydev; |
| struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; |
| |
| phy_ethtool_gset(phydev, &ecmd); |
| |
| pause->autoneg = dev->fc_autoneg; |
| |
| if (dev->fc_request_control & FLOW_CTRL_TX) |
| pause->tx_pause = 1; |
| |
| if (dev->fc_request_control & FLOW_CTRL_RX) |
| pause->rx_pause = 1; |
| } |
| |
| static int lan78xx_set_pause(struct net_device *net, |
| struct ethtool_pauseparam *pause) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| struct phy_device *phydev = net->phydev; |
| struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; |
| int ret; |
| |
| phy_ethtool_gset(phydev, &ecmd); |
| |
| if (pause->autoneg && !ecmd.autoneg) { |
| ret = -EINVAL; |
| goto exit; |
| } |
| |
| dev->fc_request_control = 0; |
| if (pause->rx_pause) |
| dev->fc_request_control |= FLOW_CTRL_RX; |
| |
| if (pause->tx_pause) |
| dev->fc_request_control |= FLOW_CTRL_TX; |
| |
| if (ecmd.autoneg) { |
| u32 mii_adv; |
| |
| ecmd.advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause); |
| mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control); |
| ecmd.advertising |= mii_adv_to_ethtool_adv_t(mii_adv); |
| phy_ethtool_sset(phydev, &ecmd); |
| } |
| |
| dev->fc_autoneg = pause->autoneg; |
| |
| ret = 0; |
| exit: |
| return ret; |
| } |
| |
| static const struct ethtool_ops lan78xx_ethtool_ops = { |
| .get_link = lan78xx_get_link, |
| .nway_reset = lan78xx_nway_reset, |
| .get_drvinfo = lan78xx_get_drvinfo, |
| .get_msglevel = lan78xx_get_msglevel, |
| .set_msglevel = lan78xx_set_msglevel, |
| .get_settings = lan78xx_get_settings, |
| .set_settings = lan78xx_set_settings, |
| .get_eeprom_len = lan78xx_ethtool_get_eeprom_len, |
| .get_eeprom = lan78xx_ethtool_get_eeprom, |
| .set_eeprom = lan78xx_ethtool_set_eeprom, |
| .get_ethtool_stats = lan78xx_get_stats, |
| .get_sset_count = lan78xx_get_sset_count, |
| .get_strings = lan78xx_get_strings, |
| .get_wol = lan78xx_get_wol, |
| .set_wol = lan78xx_set_wol, |
| .get_eee = lan78xx_get_eee, |
| .set_eee = lan78xx_set_eee, |
| .get_pauseparam = lan78xx_get_pause, |
| .set_pauseparam = lan78xx_set_pause, |
| }; |
| |
| static int lan78xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) |
| { |
| if (!netif_running(netdev)) |
| return -EINVAL; |
| |
| return phy_mii_ioctl(netdev->phydev, rq, cmd); |
| } |
| |
| static void lan78xx_init_mac_address(struct lan78xx_net *dev) |
| { |
| u32 addr_lo, addr_hi; |
| int ret; |
| u8 addr[6]; |
| |
| ret = lan78xx_read_reg(dev, RX_ADDRL, &addr_lo); |
| ret = lan78xx_read_reg(dev, RX_ADDRH, &addr_hi); |
| |
| addr[0] = addr_lo & 0xFF; |
| addr[1] = (addr_lo >> 8) & 0xFF; |
| addr[2] = (addr_lo >> 16) & 0xFF; |
| addr[3] = (addr_lo >> 24) & 0xFF; |
| addr[4] = addr_hi & 0xFF; |
| addr[5] = (addr_hi >> 8) & 0xFF; |
| |
| if (!is_valid_ether_addr(addr)) { |
| /* reading mac address from EEPROM or OTP */ |
| if ((lan78xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, |
| addr) == 0) || |
| (lan78xx_read_otp(dev, EEPROM_MAC_OFFSET, ETH_ALEN, |
| addr) == 0)) { |
| if (is_valid_ether_addr(addr)) { |
| /* eeprom values are valid so use them */ |
| netif_dbg(dev, ifup, dev->net, |
| "MAC address read from EEPROM"); |
| } else { |
| /* generate random MAC */ |
| random_ether_addr(addr); |
| netif_dbg(dev, ifup, dev->net, |
| "MAC address set to random addr"); |
| } |
| |
| addr_lo = addr[0] | (addr[1] << 8) | |
| (addr[2] << 16) | (addr[3] << 24); |
| addr_hi = addr[4] | (addr[5] << 8); |
| |
| ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo); |
| ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi); |
| } else { |
| /* generate random MAC */ |
| random_ether_addr(addr); |
| netif_dbg(dev, ifup, dev->net, |
| "MAC address set to random addr"); |
| } |
| } |
| |
| ret = lan78xx_write_reg(dev, MAF_LO(0), addr_lo); |
| ret = lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_); |
| |
| ether_addr_copy(dev->net->dev_addr, addr); |
| } |
| |
| /* MDIO read and write wrappers for phylib */ |
| static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx) |
| { |
| struct lan78xx_net *dev = bus->priv; |
| u32 val, addr; |
| int ret; |
| |
| ret = usb_autopm_get_interface(dev->intf); |
| if (ret < 0) |
| return ret; |
| |
| mutex_lock(&dev->phy_mutex); |
| |
| /* confirm MII not busy */ |
| ret = lan78xx_phy_wait_not_busy(dev); |
| if (ret < 0) |
| goto done; |
| |
| /* set the address, index & direction (read from PHY) */ |
| addr = mii_access(phy_id, idx, MII_READ); |
| ret = lan78xx_write_reg(dev, MII_ACC, addr); |
| |
| ret = lan78xx_phy_wait_not_busy(dev); |
| if (ret < 0) |
| goto done; |
| |
| ret = lan78xx_read_reg(dev, MII_DATA, &val); |
| |
| ret = (int)(val & 0xFFFF); |
| |
| done: |
| mutex_unlock(&dev->phy_mutex); |
| usb_autopm_put_interface(dev->intf); |
| return ret; |
| } |
| |
| static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx, |
| u16 regval) |
| { |
| struct lan78xx_net *dev = bus->priv; |
| u32 val, addr; |
| int ret; |
| |
| ret = usb_autopm_get_interface(dev->intf); |
| if (ret < 0) |
| return ret; |
| |
| mutex_lock(&dev->phy_mutex); |
| |
| /* confirm MII not busy */ |
| ret = lan78xx_phy_wait_not_busy(dev); |
| if (ret < 0) |
| goto done; |
| |
| val = (u32)regval; |
| ret = lan78xx_write_reg(dev, MII_DATA, val); |
| |
| /* set the address, index & direction (write to PHY) */ |
| addr = mii_access(phy_id, idx, MII_WRITE); |
| ret = lan78xx_write_reg(dev, MII_ACC, addr); |
| |
| ret = lan78xx_phy_wait_not_busy(dev); |
| if (ret < 0) |
| goto done; |
| |
| done: |
| mutex_unlock(&dev->phy_mutex); |
| usb_autopm_put_interface(dev->intf); |
| return 0; |
| } |
| |
| static int lan78xx_mdio_init(struct lan78xx_net *dev) |
| { |
| int ret; |
| |
| dev->mdiobus = mdiobus_alloc(); |
| if (!dev->mdiobus) { |
| netdev_err(dev->net, "can't allocate MDIO bus\n"); |
| return -ENOMEM; |
| } |
| |
| dev->mdiobus->priv = (void *)dev; |
| dev->mdiobus->read = lan78xx_mdiobus_read; |
| dev->mdiobus->write = lan78xx_mdiobus_write; |
| dev->mdiobus->name = "lan78xx-mdiobus"; |
| |
| snprintf(dev->mdiobus->id, MII_BUS_ID_SIZE, "usb-%03d:%03d", |
| dev->udev->bus->busnum, dev->udev->devnum); |
| |
| switch (dev->chipid) { |
| case ID_REV_CHIP_ID_7800_: |
| case ID_REV_CHIP_ID_7850_: |
| /* set to internal PHY id */ |
| dev->mdiobus->phy_mask = ~(1 << 1); |
| break; |
| } |
| |
| ret = mdiobus_register(dev->mdiobus); |
| if (ret) { |
| netdev_err(dev->net, "can't register MDIO bus\n"); |
| goto exit1; |
| } |
| |
| netdev_dbg(dev->net, "registered mdiobus bus %s\n", dev->mdiobus->id); |
| return 0; |
| exit1: |
| mdiobus_free(dev->mdiobus); |
| return ret; |
| } |
| |
| static void lan78xx_remove_mdio(struct lan78xx_net *dev) |
| { |
| mdiobus_unregister(dev->mdiobus); |
| mdiobus_free(dev->mdiobus); |
| } |
| |
| static void lan78xx_link_status_change(struct net_device *net) |
| { |
| /* nothing to do */ |
| } |
| |
| static int lan78xx_phy_init(struct lan78xx_net *dev) |
| { |
| int ret; |
| u32 mii_adv; |
| struct phy_device *phydev = dev->net->phydev; |
| |
| phydev = phy_find_first(dev->mdiobus); |
| if (!phydev) { |
| netdev_err(dev->net, "no PHY found\n"); |
| return -EIO; |
| } |
| |
| /* Enable PHY interrupts. |
| * We handle our own interrupt |
| */ |
| ret = phy_read(phydev, LAN88XX_INT_STS); |
| ret = phy_write(phydev, LAN88XX_INT_MASK, |
| LAN88XX_INT_MASK_MDINTPIN_EN_ | |
| LAN88XX_INT_MASK_LINK_CHANGE_); |
| |
| phydev->irq = PHY_IGNORE_INTERRUPT; |
| |
| ret = phy_connect_direct(dev->net, phydev, |
| lan78xx_link_status_change, |
| PHY_INTERFACE_MODE_GMII); |
| if (ret) { |
| netdev_err(dev->net, "can't attach PHY to %s\n", |
| dev->mdiobus->id); |
| return -EIO; |
| } |
| |
| /* set to AUTOMDIX */ |
| lan78xx_set_mdix_status(dev->net, ETH_TP_MDI_AUTO); |
| |
| /* MAC doesn't support 1000T Half */ |
| phydev->supported &= ~SUPPORTED_1000baseT_Half; |
| |
| /* support both flow controls */ |
| dev->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); |
| phydev->advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause); |
| mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control); |
| phydev->advertising |= mii_adv_to_ethtool_adv_t(mii_adv); |
| |
| genphy_config_aneg(phydev); |
| |
| dev->fc_autoneg = phydev->autoneg; |
| |
| phy_start(phydev); |
| |
| netif_dbg(dev, ifup, dev->net, "phy initialised successfully"); |
| |
| return 0; |
| } |
| |
| static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size) |
| { |
| int ret = 0; |
| u32 buf; |
| bool rxenabled; |
| |
| ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| |
| rxenabled = ((buf & MAC_RX_RXEN_) != 0); |
| |
| if (rxenabled) { |
| buf &= ~MAC_RX_RXEN_; |
| ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| } |
| |
| /* add 4 to size for FCS */ |
| buf &= ~MAC_RX_MAX_SIZE_MASK_; |
| buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_); |
| |
| ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| |
| if (rxenabled) { |
| buf |= MAC_RX_RXEN_; |
| ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| } |
| |
| return 0; |
| } |
| |
| static int unlink_urbs(struct lan78xx_net *dev, struct sk_buff_head *q) |
| { |
| struct sk_buff *skb; |
| unsigned long flags; |
| int count = 0; |
| |
| spin_lock_irqsave(&q->lock, flags); |
| while (!skb_queue_empty(q)) { |
| struct skb_data *entry; |
| struct urb *urb; |
| int ret; |
| |
| skb_queue_walk(q, skb) { |
| entry = (struct skb_data *)skb->cb; |
| if (entry->state != unlink_start) |
| goto found; |
| } |
| break; |
| found: |
| entry->state = unlink_start; |
| urb = entry->urb; |
| |
| /* Get reference count of the URB to avoid it to be |
| * freed during usb_unlink_urb, which may trigger |
| * use-after-free problem inside usb_unlink_urb since |
| * usb_unlink_urb is always racing with .complete |
| * handler(include defer_bh). |
| */ |
| usb_get_urb(urb); |
| spin_unlock_irqrestore(&q->lock, flags); |
| /* during some PM-driven resume scenarios, |
| * these (async) unlinks complete immediately |
| */ |
| ret = usb_unlink_urb(urb); |
| if (ret != -EINPROGRESS && ret != 0) |
| netdev_dbg(dev->net, "unlink urb err, %d\n", ret); |
| else |
| count++; |
| usb_put_urb(urb); |
| spin_lock_irqsave(&q->lock, flags); |
| } |
| spin_unlock_irqrestore(&q->lock, flags); |
| return count; |
| } |
| |
| static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu) |
| { |
| struct lan78xx_net *dev = netdev_priv(netdev); |
| int ll_mtu = new_mtu + netdev->hard_header_len; |
| int old_hard_mtu = dev->hard_mtu; |
| int old_rx_urb_size = dev->rx_urb_size; |
| int ret; |
| |
| if (new_mtu > MAX_SINGLE_PACKET_SIZE) |
| return -EINVAL; |
| |
| if (new_mtu <= 0) |
| return -EINVAL; |
| /* no second zero-length packet read wanted after mtu-sized packets */ |
| if ((ll_mtu % dev->maxpacket) == 0) |
| return -EDOM; |
| |
| ret = lan78xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); |
| |
| netdev->mtu = new_mtu; |
| |
| dev->hard_mtu = netdev->mtu + netdev->hard_header_len; |
| if (dev->rx_urb_size == old_hard_mtu) { |
| dev->rx_urb_size = dev->hard_mtu; |
| if (dev->rx_urb_size > old_rx_urb_size) { |
| if (netif_running(dev->net)) { |
| unlink_urbs(dev, &dev->rxq); |
| tasklet_schedule(&dev->bh); |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| int lan78xx_set_mac_addr(struct net_device *netdev, void *p) |
| { |
| struct lan78xx_net *dev = netdev_priv(netdev); |
| struct sockaddr *addr = p; |
| u32 addr_lo, addr_hi; |
| int ret; |
| |
| if (netif_running(netdev)) |
| return -EBUSY; |
| |
| if (!is_valid_ether_addr(addr->sa_data)) |
| return -EADDRNOTAVAIL; |
| |
| ether_addr_copy(netdev->dev_addr, addr->sa_data); |
| |
| addr_lo = netdev->dev_addr[0] | |
| netdev->dev_addr[1] << 8 | |
| netdev->dev_addr[2] << 16 | |
| netdev->dev_addr[3] << 24; |
| addr_hi = netdev->dev_addr[4] | |
| netdev->dev_addr[5] << 8; |
| |
| ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo); |
| ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi); |
| |
| return 0; |
| } |
| |
| /* Enable or disable Rx checksum offload engine */ |
| static int lan78xx_set_features(struct net_device *netdev, |
| netdev_features_t features) |
| { |
| struct lan78xx_net *dev = netdev_priv(netdev); |
| struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| unsigned long flags; |
| int ret; |
| |
| spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); |
| |
| if (features & NETIF_F_RXCSUM) { |
| pdata->rfe_ctl |= RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_; |
| pdata->rfe_ctl |= RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_; |
| } else { |
| pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_); |
| pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_); |
| } |
| |
| if (features & NETIF_F_HW_VLAN_CTAG_RX) |
| pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_; |
| else |
| pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_; |
| |
| spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); |
| |
| ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); |
| |
| return 0; |
| } |
| |
| static void lan78xx_deferred_vlan_write(struct work_struct *param) |
| { |
| struct lan78xx_priv *pdata = |
| container_of(param, struct lan78xx_priv, set_vlan); |
| struct lan78xx_net *dev = pdata->dev; |
| |
| lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, 0, |
| DP_SEL_VHF_VLAN_LEN, pdata->vlan_table); |
| } |
| |
| static int lan78xx_vlan_rx_add_vid(struct net_device *netdev, |
| __be16 proto, u16 vid) |
| { |
| struct lan78xx_net *dev = netdev_priv(netdev); |
| struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| u16 vid_bit_index; |
| u16 vid_dword_index; |
| |
| vid_dword_index = (vid >> 5) & 0x7F; |
| vid_bit_index = vid & 0x1F; |
| |
| pdata->vlan_table[vid_dword_index] |= (1 << vid_bit_index); |
| |
| /* defer register writes to a sleepable context */ |
| schedule_work(&pdata->set_vlan); |
| |
| return 0; |
| } |
| |
| static int lan78xx_vlan_rx_kill_vid(struct net_device *netdev, |
| __be16 proto, u16 vid) |
| { |
| struct lan78xx_net *dev = netdev_priv(netdev); |
| struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| u16 vid_bit_index; |
| u16 vid_dword_index; |
| |
| vid_dword_index = (vid >> 5) & 0x7F; |
| vid_bit_index = vid & 0x1F; |
| |
| pdata->vlan_table[vid_dword_index] &= ~(1 << vid_bit_index); |
| |
| /* defer register writes to a sleepable context */ |
| schedule_work(&pdata->set_vlan); |
| |
| return 0; |
| } |
| |
| static void lan78xx_init_ltm(struct lan78xx_net *dev) |
| { |
| int ret; |
| u32 buf; |
| u32 regs[6] = { 0 }; |
| |
| ret = lan78xx_read_reg(dev, USB_CFG1, &buf); |
| if (buf & USB_CFG1_LTM_ENABLE_) { |
| u8 temp[2]; |
| /* Get values from EEPROM first */ |
| if (lan78xx_read_eeprom(dev, 0x3F, 2, temp) == 0) { |
| if (temp[0] == 24) { |
| ret = lan78xx_read_raw_eeprom(dev, |
| temp[1] * 2, |
| 24, |
| (u8 *)regs); |
| if (ret < 0) |
| return; |
| } |
| } else if (lan78xx_read_otp(dev, 0x3F, 2, temp) == 0) { |
| if (temp[0] == 24) { |
| ret = lan78xx_read_raw_otp(dev, |
| temp[1] * 2, |
| 24, |
| (u8 *)regs); |
| if (ret < 0) |
| return; |
| } |
| } |
| } |
| |
| lan78xx_write_reg(dev, LTM_BELT_IDLE0, regs[0]); |
| lan78xx_write_reg(dev, LTM_BELT_IDLE1, regs[1]); |
| lan78xx_write_reg(dev, LTM_BELT_ACT0, regs[2]); |
| lan78xx_write_reg(dev, LTM_BELT_ACT1, regs[3]); |
| lan78xx_write_reg(dev, LTM_INACTIVE0, regs[4]); |
| lan78xx_write_reg(dev, LTM_INACTIVE1, regs[5]); |
| } |
| |
| static int lan78xx_reset(struct lan78xx_net *dev) |
| { |
| struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| u32 buf; |
| int ret = 0; |
| unsigned long timeout; |
| |
| ret = lan78xx_read_reg(dev, HW_CFG, &buf); |
| buf |= HW_CFG_LRST_; |
| ret = lan78xx_write_reg(dev, HW_CFG, buf); |
| |
| timeout = jiffies + HZ; |
| do { |
| mdelay(1); |
| ret = lan78xx_read_reg(dev, HW_CFG, &buf); |
| if (time_after(jiffies, timeout)) { |
| netdev_warn(dev->net, |
| "timeout on completion of LiteReset"); |
| return -EIO; |
| } |
| } while (buf & HW_CFG_LRST_); |
| |
| lan78xx_init_mac_address(dev); |
| |
| /* save DEVID for later usage */ |
| ret = lan78xx_read_reg(dev, ID_REV, &buf); |
| dev->chipid = (buf & ID_REV_CHIP_ID_MASK_) >> 16; |
| dev->chiprev = buf & ID_REV_CHIP_REV_MASK_; |
| |
| /* Respond to the IN token with a NAK */ |
| ret = lan78xx_read_reg(dev, USB_CFG0, &buf); |
| buf |= USB_CFG_BIR_; |
| ret = lan78xx_write_reg(dev, USB_CFG0, buf); |
| |
| /* Init LTM */ |
| lan78xx_init_ltm(dev); |
| |
| dev->net->hard_header_len += TX_OVERHEAD; |
| dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; |
| |
| if (dev->udev->speed == USB_SPEED_SUPER) { |
| buf = DEFAULT_BURST_CAP_SIZE / SS_USB_PKT_SIZE; |
| dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; |
| dev->rx_qlen = 4; |
| dev->tx_qlen = 4; |
| } else if (dev->udev->speed == USB_SPEED_HIGH) { |
| buf = DEFAULT_BURST_CAP_SIZE / HS_USB_PKT_SIZE; |
| dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; |
| dev->rx_qlen = RX_MAX_QUEUE_MEMORY / dev->rx_urb_size; |
| dev->tx_qlen = RX_MAX_QUEUE_MEMORY / dev->hard_mtu; |
| } else { |
| buf = DEFAULT_BURST_CAP_SIZE / FS_USB_PKT_SIZE; |
| dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; |
| dev->rx_qlen = 4; |
| } |
| |
| ret = lan78xx_write_reg(dev, BURST_CAP, buf); |
| ret = lan78xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); |
| |
| ret = lan78xx_read_reg(dev, HW_CFG, &buf); |
| buf |= HW_CFG_MEF_; |
| ret = lan78xx_write_reg(dev, HW_CFG, buf); |
| |
| ret = lan78xx_read_reg(dev, USB_CFG0, &buf); |
| buf |= USB_CFG_BCE_; |
| ret = lan78xx_write_reg(dev, USB_CFG0, buf); |
| |
| /* set FIFO sizes */ |
| buf = (MAX_RX_FIFO_SIZE - 512) / 512; |
| ret = lan78xx_write_reg(dev, FCT_RX_FIFO_END, buf); |
| |
| buf = (MAX_TX_FIFO_SIZE - 512) / 512; |
| ret = lan78xx_write_reg(dev, FCT_TX_FIFO_END, buf); |
| |
| ret = lan78xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); |
| ret = lan78xx_write_reg(dev, FLOW, 0); |
| ret = lan78xx_write_reg(dev, FCT_FLOW, 0); |
| |
| /* Don't need rfe_ctl_lock during initialisation */ |
| ret = lan78xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); |
| pdata->rfe_ctl |= RFE_CTL_BCAST_EN_ | RFE_CTL_DA_PERFECT_; |
| ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); |
| |
| /* Enable or disable checksum offload engines */ |
| lan78xx_set_features(dev->net, dev->net->features); |
| |
| lan78xx_set_multicast(dev->net); |
| |
| /* reset PHY */ |
| ret = lan78xx_read_reg(dev, PMT_CTL, &buf); |
| buf |= PMT_CTL_PHY_RST_; |
| ret = lan78xx_write_reg(dev, PMT_CTL, buf); |
| |
| timeout = jiffies + HZ; |
| do { |
| mdelay(1); |
| ret = lan78xx_read_reg(dev, PMT_CTL, &buf); |
| if (time_after(jiffies, timeout)) { |
| netdev_warn(dev->net, "timeout waiting for PHY Reset"); |
| return -EIO; |
| } |
| } while ((buf & PMT_CTL_PHY_RST_) || !(buf & PMT_CTL_READY_)); |
| |
| ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
| buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_; |
| ret = lan78xx_write_reg(dev, MAC_CR, buf); |
| |
| /* enable PHY interrupts */ |
| ret = lan78xx_read_reg(dev, INT_EP_CTL, &buf); |
| buf |= INT_ENP_PHY_INT; |
| ret = lan78xx_write_reg(dev, INT_EP_CTL, buf); |
| |
| ret = lan78xx_read_reg(dev, MAC_TX, &buf); |
| buf |= MAC_TX_TXEN_; |
| ret = lan78xx_write_reg(dev, MAC_TX, buf); |
| |
| ret = lan78xx_read_reg(dev, FCT_TX_CTL, &buf); |
| buf |= FCT_TX_CTL_EN_; |
| ret = lan78xx_write_reg(dev, FCT_TX_CTL, buf); |
| |
| ret = lan78xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); |
| |
| ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| buf |= MAC_RX_RXEN_; |
| ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| |
| ret = lan78xx_read_reg(dev, FCT_RX_CTL, &buf); |
| buf |= FCT_RX_CTL_EN_; |
| ret = lan78xx_write_reg(dev, FCT_RX_CTL, buf); |
| |
| return 0; |
| } |
| |
| static void lan78xx_init_stats(struct lan78xx_net *dev) |
| { |
| u32 *p; |
| int i; |
| |
| /* initialize for stats update |
| * some counters are 20bits and some are 32bits |
| */ |
| p = (u32 *)&dev->stats.rollover_max; |
| for (i = 0; i < (sizeof(dev->stats.rollover_max) / (sizeof(u32))); i++) |
| p[i] = 0xFFFFF; |
| |
| dev->stats.rollover_max.rx_unicast_byte_count = 0xFFFFFFFF; |
| dev->stats.rollover_max.rx_broadcast_byte_count = 0xFFFFFFFF; |
| dev->stats.rollover_max.rx_multicast_byte_count = 0xFFFFFFFF; |
| dev->stats.rollover_max.eee_rx_lpi_transitions = 0xFFFFFFFF; |
| dev->stats.rollover_max.eee_rx_lpi_time = 0xFFFFFFFF; |
| dev->stats.rollover_max.tx_unicast_byte_count = 0xFFFFFFFF; |
| dev->stats.rollover_max.tx_broadcast_byte_count = 0xFFFFFFFF; |
| dev->stats.rollover_max.tx_multicast_byte_count = 0xFFFFFFFF; |
| dev->stats.rollover_max.eee_tx_lpi_transitions = 0xFFFFFFFF; |
| dev->stats.rollover_max.eee_tx_lpi_time = 0xFFFFFFFF; |
| |
| lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE); |
| } |
| |
| static int lan78xx_open(struct net_device *net) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| int ret; |
| |
| ret = usb_autopm_get_interface(dev->intf); |
| if (ret < 0) |
| goto out; |
| |
| ret = lan78xx_reset(dev); |
| if (ret < 0) |
| goto done; |
| |
| ret = lan78xx_phy_init(dev); |
| if (ret < 0) |
| goto done; |
| |
| /* for Link Check */ |
| if (dev->urb_intr) { |
| ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL); |
| if (ret < 0) { |
| netif_err(dev, ifup, dev->net, |
| "intr submit %d\n", ret); |
| goto done; |
| } |
| } |
| |
| lan78xx_init_stats(dev); |
| |
| set_bit(EVENT_DEV_OPEN, &dev->flags); |
| |
| netif_start_queue(net); |
| |
| dev->link_on = false; |
| |
| lan78xx_defer_kevent(dev, EVENT_LINK_RESET); |
| done: |
| usb_autopm_put_interface(dev->intf); |
| |
| out: |
| return ret; |
| } |
| |
| static void lan78xx_terminate_urbs(struct lan78xx_net *dev) |
| { |
| DECLARE_WAIT_QUEUE_HEAD_ONSTACK(unlink_wakeup); |
| DECLARE_WAITQUEUE(wait, current); |
| int temp; |
| |
| /* ensure there are no more active urbs */ |
| add_wait_queue(&unlink_wakeup, &wait); |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| dev->wait = &unlink_wakeup; |
| temp = unlink_urbs(dev, &dev->txq) + unlink_urbs(dev, &dev->rxq); |
| |
| /* maybe wait for deletions to finish. */ |
| while (!skb_queue_empty(&dev->rxq) && |
| !skb_queue_empty(&dev->txq) && |
| !skb_queue_empty(&dev->done)) { |
| schedule_timeout(msecs_to_jiffies(UNLINK_TIMEOUT_MS)); |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| netif_dbg(dev, ifdown, dev->net, |
| "waited for %d urb completions\n", temp); |
| } |
| set_current_state(TASK_RUNNING); |
| dev->wait = NULL; |
| remove_wait_queue(&unlink_wakeup, &wait); |
| } |
| |
| int lan78xx_stop(struct net_device *net) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| |
| if (timer_pending(&dev->stat_monitor)) |
| del_timer_sync(&dev->stat_monitor); |
| |
| phy_stop(net->phydev); |
| phy_disconnect(net->phydev); |
| net->phydev = NULL; |
| |
| clear_bit(EVENT_DEV_OPEN, &dev->flags); |
| netif_stop_queue(net); |
| |
| netif_info(dev, ifdown, dev->net, |
| "stop stats: rx/tx %lu/%lu, errs %lu/%lu\n", |
| net->stats.rx_packets, net->stats.tx_packets, |
| net->stats.rx_errors, net->stats.tx_errors); |
| |
| lan78xx_terminate_urbs(dev); |
| |
| usb_kill_urb(dev->urb_intr); |
| |
| skb_queue_purge(&dev->rxq_pause); |
| |
| /* deferred work (task, timer, softirq) must also stop. |
| * can't flush_scheduled_work() until we drop rtnl (later), |
| * else workers could deadlock; so make workers a NOP. |
| */ |
| dev->flags = 0; |
| cancel_delayed_work_sync(&dev->wq); |
| tasklet_kill(&dev->bh); |
| |
| usb_autopm_put_interface(dev->intf); |
| |
| return 0; |
| } |
| |
| static int lan78xx_linearize(struct sk_buff *skb) |
| { |
| return skb_linearize(skb); |
| } |
| |
| static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev, |
| struct sk_buff *skb, gfp_t flags) |
| { |
| u32 tx_cmd_a, tx_cmd_b; |
| |
| if (skb_headroom(skb) < TX_OVERHEAD) { |
| struct sk_buff *skb2; |
| |
| skb2 = skb_copy_expand(skb, TX_OVERHEAD, 0, flags); |
| dev_kfree_skb_any(skb); |
| skb = skb2; |
| if (!skb) |
| return NULL; |
| } |
| |
| if (lan78xx_linearize(skb) < 0) |
| return NULL; |
| |
| tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN_MASK_) | TX_CMD_A_FCS_; |
| |
| if (skb->ip_summed == CHECKSUM_PARTIAL) |
| tx_cmd_a |= TX_CMD_A_IPE_ | TX_CMD_A_TPE_; |
| |
| tx_cmd_b = 0; |
| if (skb_is_gso(skb)) { |
| u16 mss = max(skb_shinfo(skb)->gso_size, TX_CMD_B_MSS_MIN_); |
| |
| tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT_) & TX_CMD_B_MSS_MASK_; |
| |
| tx_cmd_a |= TX_CMD_A_LSO_; |
| } |
| |
| if (skb_vlan_tag_present(skb)) { |
| tx_cmd_a |= TX_CMD_A_IVTG_; |
| tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_; |
| } |
| |
| skb_push(skb, 4); |
| cpu_to_le32s(&tx_cmd_b); |
| memcpy(skb->data, &tx_cmd_b, 4); |
| |
| skb_push(skb, 4); |
| cpu_to_le32s(&tx_cmd_a); |
| memcpy(skb->data, &tx_cmd_a, 4); |
| |
| return skb; |
| } |
| |
| static enum skb_state defer_bh(struct lan78xx_net *dev, struct sk_buff *skb, |
| struct sk_buff_head *list, enum skb_state state) |
| { |
| unsigned long flags; |
| enum skb_state old_state; |
| struct skb_data *entry = (struct skb_data *)skb->cb; |
| |
| spin_lock_irqsave(&list->lock, flags); |
| old_state = entry->state; |
| entry->state = state; |
| |
| __skb_unlink(skb, list); |
| spin_unlock(&list->lock); |
| spin_lock(&dev->done.lock); |
| |
| __skb_queue_tail(&dev->done, skb); |
| if (skb_queue_len(&dev->done) == 1) |
| tasklet_schedule(&dev->bh); |
| spin_unlock_irqrestore(&dev->done.lock, flags); |
| |
| return old_state; |
| } |
| |
| static void tx_complete(struct urb *urb) |
| { |
| struct sk_buff *skb = (struct sk_buff *)urb->context; |
| struct skb_data *entry = (struct skb_data *)skb->cb; |
| struct lan78xx_net *dev = entry->dev; |
| |
| if (urb->status == 0) { |
| dev->net->stats.tx_packets++; |
| dev->net->stats.tx_bytes += entry->length; |
| } else { |
| dev->net->stats.tx_errors++; |
| |
| switch (urb->status) { |
| case -EPIPE: |
| lan78xx_defer_kevent(dev, EVENT_TX_HALT); |
| break; |
| |
| /* software-driven interface shutdown */ |
| case -ECONNRESET: |
| case -ESHUTDOWN: |
| break; |
| |
| case -EPROTO: |
| case -ETIME: |
| case -EILSEQ: |
| netif_stop_queue(dev->net); |
| break; |
| default: |
| netif_dbg(dev, tx_err, dev->net, |
| "tx err %d\n", entry->urb->status); |
| break; |
| } |
| } |
| |
| usb_autopm_put_interface_async(dev->intf); |
| |
| defer_bh(dev, skb, &dev->txq, tx_done); |
| } |
| |
| static void lan78xx_queue_skb(struct sk_buff_head *list, |
| struct sk_buff *newsk, enum skb_state state) |
| { |
| struct skb_data *entry = (struct skb_data *)newsk->cb; |
| |
| __skb_queue_tail(list, newsk); |
| entry->state = state; |
| } |
| |
| netdev_tx_t lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| struct sk_buff *skb2 = NULL; |
| |
| if (skb) { |
| skb_tx_timestamp(skb); |
| skb2 = lan78xx_tx_prep(dev, skb, GFP_ATOMIC); |
| } |
| |
| if (skb2) { |
| skb_queue_tail(&dev->txq_pend, skb2); |
| |
| /* throttle TX patch at slower than SUPER SPEED USB */ |
| if ((dev->udev->speed < USB_SPEED_SUPER) && |
| (skb_queue_len(&dev->txq_pend) > 10)) |
| netif_stop_queue(net); |
| } else { |
| netif_dbg(dev, tx_err, dev->net, |
| "lan78xx_tx_prep return NULL\n"); |
| dev->net->stats.tx_errors++; |
| dev->net->stats.tx_dropped++; |
| } |
| |
| tasklet_schedule(&dev->bh); |
| |
| return NETDEV_TX_OK; |
| } |
| |
| int lan78xx_get_endpoints(struct lan78xx_net *dev, struct usb_interface *intf) |
| { |
| int tmp; |
| struct usb_host_interface *alt = NULL; |
| struct usb_host_endpoint *in = NULL, *out = NULL; |
| struct usb_host_endpoint *status = NULL; |
| |
| for (tmp = 0; tmp < intf->num_altsetting; tmp++) { |
| unsigned ep; |
| |
| in = NULL; |
| out = NULL; |
| status = NULL; |
| alt = intf->altsetting + tmp; |
| |
| for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { |
| struct usb_host_endpoint *e; |
| int intr = 0; |
| |
| e = alt->endpoint + ep; |
| switch (e->desc.bmAttributes) { |
| case USB_ENDPOINT_XFER_INT: |
| if (!usb_endpoint_dir_in(&e->desc)) |
| continue; |
| intr = 1; |
| /* FALLTHROUGH */ |
| case USB_ENDPOINT_XFER_BULK: |
| break; |
| default: |
| continue; |
| } |
| if (usb_endpoint_dir_in(&e->desc)) { |
| if (!intr && !in) |
| in = e; |
| else if (intr && !status) |
| status = e; |
| } else { |
| if (!out) |
| out = e; |
| } |
| } |
| if (in && out) |
| break; |
| } |
| if (!alt || !in || !out) |
| return -EINVAL; |
| |
| dev->pipe_in = usb_rcvbulkpipe(dev->udev, |
| in->desc.bEndpointAddress & |
| USB_ENDPOINT_NUMBER_MASK); |
| dev->pipe_out = usb_sndbulkpipe(dev->udev, |
| out->desc.bEndpointAddress & |
| USB_ENDPOINT_NUMBER_MASK); |
| dev->ep_intr = status; |
| |
| return 0; |
| } |
| |
| static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf) |
| { |
| struct lan78xx_priv *pdata = NULL; |
| int ret; |
| int i; |
| |
| ret = lan78xx_get_endpoints(dev, intf); |
| |
| dev->data[0] = (unsigned long)kzalloc(sizeof(*pdata), GFP_KERNEL); |
| |
| pdata = (struct lan78xx_priv *)(dev->data[0]); |
| if (!pdata) { |
| netdev_warn(dev->net, "Unable to allocate lan78xx_priv"); |
| return -ENOMEM; |
| } |
| |
| pdata->dev = dev; |
| |
| spin_lock_init(&pdata->rfe_ctl_lock); |
| mutex_init(&pdata->dataport_mutex); |
| |
| INIT_WORK(&pdata->set_multicast, lan78xx_deferred_multicast_write); |
| |
| for (i = 0; i < DP_SEL_VHF_VLAN_LEN; i++) |
| pdata->vlan_table[i] = 0; |
| |
| INIT_WORK(&pdata->set_vlan, lan78xx_deferred_vlan_write); |
| |
| dev->net->features = 0; |
| |
| if (DEFAULT_TX_CSUM_ENABLE) |
| dev->net->features |= NETIF_F_HW_CSUM; |
| |
| if (DEFAULT_RX_CSUM_ENABLE) |
| dev->net->features |= NETIF_F_RXCSUM; |
| |
| if (DEFAULT_TSO_CSUM_ENABLE) |
| dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG; |
| |
| dev->net->hw_features = dev->net->features; |
| |
| /* Init all registers */ |
| ret = lan78xx_reset(dev); |
| |
| lan78xx_mdio_init(dev); |
| |
| dev->net->flags |= IFF_MULTICAST; |
| |
| pdata->wol = WAKE_MAGIC; |
| |
| return 0; |
| } |
| |
| static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf) |
| { |
| struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| |
| lan78xx_remove_mdio(dev); |
| |
| if (pdata) { |
| netif_dbg(dev, ifdown, dev->net, "free pdata"); |
| kfree(pdata); |
| pdata = NULL; |
| dev->data[0] = 0; |
| } |
| } |
| |
| static void lan78xx_rx_csum_offload(struct lan78xx_net *dev, |
| struct sk_buff *skb, |
| u32 rx_cmd_a, u32 rx_cmd_b) |
| { |
| if (!(dev->net->features & NETIF_F_RXCSUM) || |
| unlikely(rx_cmd_a & RX_CMD_A_ICSM_)) { |
| skb->ip_summed = CHECKSUM_NONE; |
| } else { |
| skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT_)); |
| skb->ip_summed = CHECKSUM_COMPLETE; |
| } |
| } |
| |
| void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb) |
| { |
| int status; |
| |
| if (test_bit(EVENT_RX_PAUSED, &dev->flags)) { |
| skb_queue_tail(&dev->rxq_pause, skb); |
| return; |
| } |
| |
| skb->protocol = eth_type_trans(skb, dev->net); |
| dev->net->stats.rx_packets++; |
| dev->net->stats.rx_bytes += skb->len; |
| |
| netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n", |
| skb->len + sizeof(struct ethhdr), skb->protocol); |
| memset(skb->cb, 0, sizeof(struct skb_data)); |
| |
| if (skb_defer_rx_timestamp(skb)) |
| return; |
| |
| status = netif_rx(skb); |
| if (status != NET_RX_SUCCESS) |
| netif_dbg(dev, rx_err, dev->net, |
| "netif_rx status %d\n", status); |
| } |
| |
| static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb) |
| { |
| if (skb->len < dev->net->hard_header_len) |
| return 0; |
| |
| while (skb->len > 0) { |
| u32 rx_cmd_a, rx_cmd_b, align_count, size; |
| u16 rx_cmd_c; |
| struct sk_buff *skb2; |
| unsigned char *packet; |
| |
| memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a)); |
| le32_to_cpus(&rx_cmd_a); |
| skb_pull(skb, sizeof(rx_cmd_a)); |
| |
| memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b)); |
| le32_to_cpus(&rx_cmd_b); |
| skb_pull(skb, sizeof(rx_cmd_b)); |
| |
| memcpy(&rx_cmd_c, skb->data, sizeof(rx_cmd_c)); |
| le16_to_cpus(&rx_cmd_c); |
| skb_pull(skb, sizeof(rx_cmd_c)); |
| |
| packet = skb->data; |
| |
| /* get the packet length */ |
| size = (rx_cmd_a & RX_CMD_A_LEN_MASK_); |
| align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; |
| |
| if (unlikely(rx_cmd_a & RX_CMD_A_RED_)) { |
| netif_dbg(dev, rx_err, dev->net, |
| "Error rx_cmd_a=0x%08x", rx_cmd_a); |
| } else { |
| /* last frame in this batch */ |
| if (skb->len == size) { |
| lan78xx_rx_csum_offload(dev, skb, |
| rx_cmd_a, rx_cmd_b); |
| |
| skb_trim(skb, skb->len - 4); /* remove fcs */ |
| skb->truesize = size + sizeof(struct sk_buff); |
| |
| return 1; |
| } |
| |
| skb2 = skb_clone(skb, GFP_ATOMIC); |
| if (unlikely(!skb2)) { |
| netdev_warn(dev->net, "Error allocating skb"); |
| return 0; |
| } |
| |
| skb2->len = size; |
| skb2->data = packet; |
| skb_set_tail_pointer(skb2, size); |
| |
| lan78xx_rx_csum_offload(dev, skb2, rx_cmd_a, rx_cmd_b); |
| |
| skb_trim(skb2, skb2->len - 4); /* remove fcs */ |
| skb2->truesize = size + sizeof(struct sk_buff); |
| |
| lan78xx_skb_return(dev, skb2); |
| } |
| |
| skb_pull(skb, size); |
| |
| /* padding bytes before the next frame starts */ |
| if (skb->len) |
| skb_pull(skb, align_count); |
| } |
| |
| return 1; |
| } |
| |
| static inline void rx_process(struct lan78xx_net *dev, struct sk_buff *skb) |
| { |
| if (!lan78xx_rx(dev, skb)) { |
| dev->net->stats.rx_errors++; |
| goto done; |
| } |
| |
| if (skb->len) { |
| lan78xx_skb_return(dev, skb); |
| return; |
| } |
| |
| netif_dbg(dev, rx_err, dev->net, "drop\n"); |
| dev->net->stats.rx_errors++; |
| done: |
| skb_queue_tail(&dev->done, skb); |
| } |
| |
| static void rx_complete(struct urb *urb); |
| |
| static int rx_submit(struct lan78xx_net *dev, struct urb *urb, gfp_t flags) |
| { |
| struct sk_buff *skb; |
| struct skb_data *entry; |
| unsigned long lockflags; |
| size_t size = dev->rx_urb_size; |
| int ret = 0; |
| |
| skb = netdev_alloc_skb_ip_align(dev->net, size); |
| if (!skb) { |
| usb_free_urb(urb); |
| return -ENOMEM; |
| } |
| |
| entry = (struct skb_data *)skb->cb; |
| entry->urb = urb; |
| entry->dev = dev; |
| entry->length = 0; |
| |
| usb_fill_bulk_urb(urb, dev->udev, dev->pipe_in, |
| skb->data, size, rx_complete, skb); |
| |
| spin_lock_irqsave(&dev->rxq.lock, lockflags); |
| |
| if (netif_device_present(dev->net) && |
| netif_running(dev->net) && |
| !test_bit(EVENT_RX_HALT, &dev->flags) && |
| !test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { |
| ret = usb_submit_urb(urb, GFP_ATOMIC); |
| switch (ret) { |
| case 0: |
| lan78xx_queue_skb(&dev->rxq, skb, rx_start); |
| break; |
| case -EPIPE: |
| lan78xx_defer_kevent(dev, EVENT_RX_HALT); |
| break; |
| case -ENODEV: |
| netif_dbg(dev, ifdown, dev->net, "device gone\n"); |
| netif_device_detach(dev->net); |
| break; |
| case -EHOSTUNREACH: |
| ret = -ENOLINK; |
| break; |
| default: |
| netif_dbg(dev, rx_err, dev->net, |
| "rx submit, %d\n", ret); |
| tasklet_schedule(&dev->bh); |
| } |
| } else { |
| netif_dbg(dev, ifdown, dev->net, "rx: stopped\n"); |
| ret = -ENOLINK; |
| } |
| spin_unlock_irqrestore(&dev->rxq.lock, lockflags); |
| if (ret) { |
| dev_kfree_skb_any(skb); |
| usb_free_urb(urb); |
| } |
| return ret; |
| } |
| |
| static void rx_complete(struct urb *urb) |
| { |
| struct sk_buff *skb = (struct sk_buff *)urb->context; |
| struct skb_data *entry = (struct skb_data *)skb->cb; |
| struct lan78xx_net *dev = entry->dev; |
| int urb_status = urb->status; |
| enum skb_state state; |
| |
| skb_put(skb, urb->actual_length); |
| state = rx_done; |
| entry->urb = NULL; |
| |
| switch (urb_status) { |
| case 0: |
| if (skb->len < dev->net->hard_header_len) { |
| state = rx_cleanup; |
| dev->net->stats.rx_errors++; |
| dev->net->stats.rx_length_errors++; |
| netif_dbg(dev, rx_err, dev->net, |
| "rx length %d\n", skb->len); |
| } |
| usb_mark_last_busy(dev->udev); |
| break; |
| case -EPIPE: |
| dev->net->stats.rx_errors++; |
| lan78xx_defer_kevent(dev, EVENT_RX_HALT); |
| /* FALLTHROUGH */ |
| case -ECONNRESET: /* async unlink */ |
| case -ESHUTDOWN: /* hardware gone */ |
| netif_dbg(dev, ifdown, dev->net, |
| "rx shutdown, code %d\n", urb_status); |
| state = rx_cleanup; |
| entry->urb = urb; |
| urb = NULL; |
| break; |
| case -EPROTO: |
| case -ETIME: |
| case -EILSEQ: |
| dev->net->stats.rx_errors++; |
| state = rx_cleanup; |
| entry->urb = urb; |
| urb = NULL; |
| break; |
| |
| /* data overrun ... flush fifo? */ |
| case -EOVERFLOW: |
| dev->net->stats.rx_over_errors++; |
| /* FALLTHROUGH */ |
| |
| default: |
| state = rx_cleanup; |
| dev->net->stats.rx_errors++; |
| netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status); |
| break; |
| } |
| |
| state = defer_bh(dev, skb, &dev->rxq, state); |
| |
| if (urb) { |
| if (netif_running(dev->net) && |
| !test_bit(EVENT_RX_HALT, &dev->flags) && |
| state != unlink_start) { |
| rx_submit(dev, urb, GFP_ATOMIC); |
| return; |
| } |
| usb_free_urb(urb); |
| } |
| netif_dbg(dev, rx_err, dev->net, "no read resubmitted\n"); |
| } |
| |
| static void lan78xx_tx_bh(struct lan78xx_net *dev) |
| { |
| int length; |
| struct urb *urb = NULL; |
| struct skb_data *entry; |
| unsigned long flags; |
| struct sk_buff_head *tqp = &dev->txq_pend; |
| struct sk_buff *skb, *skb2; |
| int ret; |
| int count, pos; |
| int skb_totallen, pkt_cnt; |
| |
| skb_totallen = 0; |
| pkt_cnt = 0; |
| for (skb = tqp->next; pkt_cnt < tqp->qlen; skb = skb->next) { |
| if (skb_is_gso(skb)) { |
| if (pkt_cnt) { |
| /* handle previous packets first */ |
| break; |
| } |
| length = skb->len; |
| skb2 = skb_dequeue(tqp); |
| goto gso_skb; |
| } |
| |
| if ((skb_totallen + skb->len) > MAX_SINGLE_PACKET_SIZE) |
| break; |
| skb_totallen = skb->len + roundup(skb_totallen, sizeof(u32)); |
| pkt_cnt++; |
| } |
| |
| /* copy to a single skb */ |
| skb = alloc_skb(skb_totallen, GFP_ATOMIC); |
| if (!skb) |
| goto drop; |
| |
| skb_put(skb, skb_totallen); |
| |
| for (count = pos = 0; count < pkt_cnt; count++) { |
| skb2 = skb_dequeue(tqp); |
| if (skb2) { |
| memcpy(skb->data + pos, skb2->data, skb2->len); |
| pos += roundup(skb2->len, sizeof(u32)); |
| dev_kfree_skb(skb2); |
| } |
| } |
| |
| length = skb_totallen; |
| |
| gso_skb: |
| urb = usb_alloc_urb(0, GFP_ATOMIC); |
| if (!urb) { |
| netif_dbg(dev, tx_err, dev->net, "no urb\n"); |
| goto drop; |
| } |
| |
| entry = (struct skb_data *)skb->cb; |
| entry->urb = urb; |
| entry->dev = dev; |
| entry->length = length; |
| |
| spin_lock_irqsave(&dev->txq.lock, flags); |
| ret = usb_autopm_get_interface_async(dev->intf); |
| if (ret < 0) { |
| spin_unlock_irqrestore(&dev->txq.lock, flags); |
| goto drop; |
| } |
| |
| usb_fill_bulk_urb(urb, dev->udev, dev->pipe_out, |
| skb->data, skb->len, tx_complete, skb); |
| |
| if (length % dev->maxpacket == 0) { |
| /* send USB_ZERO_PACKET */ |
| urb->transfer_flags |= URB_ZERO_PACKET; |
| } |
| |
| #ifdef CONFIG_PM |
| /* if this triggers the device is still a sleep */ |
| if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { |
| /* transmission will be done in resume */ |
| usb_anchor_urb(urb, &dev->deferred); |
| /* no use to process more packets */ |
| netif_stop_queue(dev->net); |
| usb_put_urb(urb); |
| spin_unlock_irqrestore(&dev->txq.lock, flags); |
| netdev_dbg(dev->net, "Delaying transmission for resumption\n"); |
| return; |
| } |
| #endif |
| |
| ret = usb_submit_urb(urb, GFP_ATOMIC); |
| switch (ret) { |
| case 0: |
| dev->net->trans_start = jiffies; |
| lan78xx_queue_skb(&dev->txq, skb, tx_start); |
| if (skb_queue_len(&dev->txq) >= dev->tx_qlen) |
| netif_stop_queue(dev->net); |
| break; |
| case -EPIPE: |
| netif_stop_queue(dev->net); |
| lan78xx_defer_kevent(dev, EVENT_TX_HALT); |
| usb_autopm_put_interface_async(dev->intf); |
| break; |
| default: |
| usb_autopm_put_interface_async(dev->intf); |
| netif_dbg(dev, tx_err, dev->net, |
| "tx: submit urb err %d\n", ret); |
| break; |
| } |
| |
| spin_unlock_irqrestore(&dev->txq.lock, flags); |
| |
| if (ret) { |
| netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", ret); |
| drop: |
| dev->net->stats.tx_dropped++; |
| if (skb) |
| dev_kfree_skb_any(skb); |
| usb_free_urb(urb); |
| } else |
| netif_dbg(dev, tx_queued, dev->net, |
| "> tx, len %d, type 0x%x\n", length, skb->protocol); |
| } |
| |
| static void lan78xx_rx_bh(struct lan78xx_net *dev) |
| { |
| struct urb *urb; |
| int i; |
| |
| if (skb_queue_len(&dev->rxq) < dev->rx_qlen) { |
| for (i = 0; i < 10; i++) { |
| if (skb_queue_len(&dev->rxq) >= dev->rx_qlen) |
| break; |
| urb = usb_alloc_urb(0, GFP_ATOMIC); |
| if (urb) |
| if (rx_submit(dev, urb, GFP_ATOMIC) == -ENOLINK) |
| return; |
| } |
| |
| if (skb_queue_len(&dev->rxq) < dev->rx_qlen) |
| tasklet_schedule(&dev->bh); |
| } |
| if (skb_queue_len(&dev->txq) < dev->tx_qlen) |
| netif_wake_queue(dev->net); |
| } |
| |
| static void lan78xx_bh(unsigned long param) |
| { |
| struct lan78xx_net *dev = (struct lan78xx_net *)param; |
| struct sk_buff *skb; |
| struct skb_data *entry; |
| |
| while ((skb = skb_dequeue(&dev->done))) { |
| entry = (struct skb_data *)(skb->cb); |
| switch (entry->state) { |
| case rx_done: |
| entry->state = rx_cleanup; |
| rx_process(dev, skb); |
| continue; |
| case tx_done: |
| usb_free_urb(entry->urb); |
| dev_kfree_skb(skb); |
| continue; |
| case rx_cleanup: |
| usb_free_urb(entry->urb); |
| dev_kfree_skb(skb); |
| continue; |
| default: |
| netdev_dbg(dev->net, "skb state %d\n", entry->state); |
| return; |
| } |
| } |
| |
| if (netif_device_present(dev->net) && netif_running(dev->net)) { |
| /* reset update timer delta */ |
| if (timer_pending(&dev->stat_monitor) && (dev->delta != 1)) { |
| dev->delta = 1; |
| mod_timer(&dev->stat_monitor, |
| jiffies + STAT_UPDATE_TIMER); |
| } |
| |
| if (!skb_queue_empty(&dev->txq_pend)) |
| lan78xx_tx_bh(dev); |
| |
| if (!timer_pending(&dev->delay) && |
| !test_bit(EVENT_RX_HALT, &dev->flags)) |
| lan78xx_rx_bh(dev); |
| } |
| } |
| |
| static void lan78xx_delayedwork(struct work_struct *work) |
| { |
| int status; |
| struct lan78xx_net *dev; |
| |
| dev = container_of(work, struct lan78xx_net, wq.work); |
| |
| if (test_bit(EVENT_TX_HALT, &dev->flags)) { |
| unlink_urbs(dev, &dev->txq); |
| status = usb_autopm_get_interface(dev->intf); |
| if (status < 0) |
| goto fail_pipe; |
| status = usb_clear_halt(dev->udev, dev->pipe_out); |
| usb_autopm_put_interface(dev->intf); |
| if (status < 0 && |
| status != -EPIPE && |
| status != -ESHUTDOWN) { |
| if (netif_msg_tx_err(dev)) |
| fail_pipe: |
| netdev_err(dev->net, |
| "can't clear tx halt, status %d\n", |
| status); |
| } else { |
| clear_bit(EVENT_TX_HALT, &dev->flags); |
| if (status != -ESHUTDOWN) |
| netif_wake_queue(dev->net); |
| } |
| } |
| if (test_bit(EVENT_RX_HALT, &dev->flags)) { |
| unlink_urbs(dev, &dev->rxq); |
| status = usb_autopm_get_interface(dev->intf); |
| if (status < 0) |
| goto fail_halt; |
| status = usb_clear_halt(dev->udev, dev->pipe_in); |
| usb_autopm_put_interface(dev->intf); |
| if (status < 0 && |
| status != -EPIPE && |
| status != -ESHUTDOWN) { |
| if (netif_msg_rx_err(dev)) |
| fail_halt: |
| netdev_err(dev->net, |
| "can't clear rx halt, status %d\n", |
| status); |
| } else { |
| clear_bit(EVENT_RX_HALT, &dev->flags); |
| tasklet_schedule(&dev->bh); |
| } |
| } |
| |
| if (test_bit(EVENT_LINK_RESET, &dev->flags)) { |
| int ret = 0; |
| |
| clear_bit(EVENT_LINK_RESET, &dev->flags); |
| status = usb_autopm_get_interface(dev->intf); |
| if (status < 0) |
| goto skip_reset; |
| if (lan78xx_link_reset(dev) < 0) { |
| usb_autopm_put_interface(dev->intf); |
| skip_reset: |
| netdev_info(dev->net, "link reset failed (%d)\n", |
| ret); |
| } else { |
| usb_autopm_put_interface(dev->intf); |
| } |
| } |
| |
| if (test_bit(EVENT_STAT_UPDATE, &dev->flags)) { |
| lan78xx_update_stats(dev); |
| |
| clear_bit(EVENT_STAT_UPDATE, &dev->flags); |
| |
| mod_timer(&dev->stat_monitor, |
| jiffies + (STAT_UPDATE_TIMER * dev->delta)); |
| |
| dev->delta = min((dev->delta * 2), 50); |
| } |
| } |
| |
| static void intr_complete(struct urb *urb) |
| { |
| struct lan78xx_net *dev = urb->context; |
| int status = urb->status; |
| |
| switch (status) { |
| /* success */ |
| case 0: |
| lan78xx_status(dev, urb); |
| break; |
| |
| /* software-driven interface shutdown */ |
| case -ENOENT: /* urb killed */ |
| case -ESHUTDOWN: /* hardware gone */ |
| netif_dbg(dev, ifdown, dev->net, |
| "intr shutdown, code %d\n", status); |
| return; |
| |
| /* NOTE: not throttling like RX/TX, since this endpoint |
| * already polls infrequently |
| */ |
| default: |
| netdev_dbg(dev->net, "intr status %d\n", status); |
| break; |
| } |
| |
| if (!netif_running(dev->net)) |
| return; |
| |
| memset(urb->transfer_buffer, 0, urb->transfer_buffer_length); |
| status = usb_submit_urb(urb, GFP_ATOMIC); |
| if (status != 0) |
| netif_err(dev, timer, dev->net, |
| "intr resubmit --> %d\n", status); |
| } |
| |
| static void lan78xx_disconnect(struct usb_interface *intf) |
| { |
| struct lan78xx_net *dev; |
| struct usb_device *udev; |
| struct net_device *net; |
| |
| dev = usb_get_intfdata(intf); |
| usb_set_intfdata(intf, NULL); |
| if (!dev) |
| return; |
| |
| udev = interface_to_usbdev(intf); |
| |
| net = dev->net; |
| unregister_netdev(net); |
| |
| cancel_delayed_work_sync(&dev->wq); |
| |
| usb_scuttle_anchored_urbs(&dev->deferred); |
| |
| lan78xx_unbind(dev, intf); |
| |
| usb_kill_urb(dev->urb_intr); |
| usb_free_urb(dev->urb_intr); |
| |
| free_netdev(net); |
| usb_put_dev(udev); |
| } |
| |
| void lan78xx_tx_timeout(struct net_device *net) |
| { |
| struct lan78xx_net *dev = netdev_priv(net); |
| |
| unlink_urbs(dev, &dev->txq); |
| tasklet_schedule(&dev->bh); |
| } |
| |
| static const struct net_device_ops lan78xx_netdev_ops = { |
| .ndo_open = lan78xx_open, |
| .ndo_stop = lan78xx_stop, |
| .ndo_start_xmit = lan78xx_start_xmit, |
| .ndo_tx_timeout = lan78xx_tx_timeout, |
| .ndo_change_mtu = lan78xx_change_mtu, |
| .ndo_set_mac_address = lan78xx_set_mac_addr, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_do_ioctl = lan78xx_ioctl, |
| .ndo_set_rx_mode = lan78xx_set_multicast, |
| .ndo_set_features = lan78xx_set_features, |
| .ndo_vlan_rx_add_vid = lan78xx_vlan_rx_add_vid, |
| .ndo_vlan_rx_kill_vid = lan78xx_vlan_rx_kill_vid, |
| }; |
| |
| static void lan78xx_stat_monitor(unsigned long param) |
| { |
| struct lan78xx_net *dev; |
| |
| dev = (struct lan78xx_net *)param; |
| |
| lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE); |
| } |
| |
| static int lan78xx_probe(struct usb_interface *intf, |
| const struct usb_device_id *id) |
| { |
| struct lan78xx_net *dev; |
| struct net_device *netdev; |
| struct usb_device *udev; |
| int ret; |
| unsigned maxp; |
| unsigned period; |
| u8 *buf = NULL; |
| |
| udev = interface_to_usbdev(intf); |
| udev = usb_get_dev(udev); |
| |
| ret = -ENOMEM; |
| netdev = alloc_etherdev(sizeof(struct lan78xx_net)); |
| if (!netdev) { |
| dev_err(&intf->dev, "Error: OOM\n"); |
| goto out1; |
| } |
| |
| /* netdev_printk() needs this */ |
| SET_NETDEV_DEV(netdev, &intf->dev); |
| |
| dev = netdev_priv(netdev); |
| dev->udev = udev; |
| dev->intf = intf; |
| dev->net = netdev; |
| dev->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV |
| | NETIF_MSG_PROBE | NETIF_MSG_LINK); |
| |
| skb_queue_head_init(&dev->rxq); |
| skb_queue_head_init(&dev->txq); |
| skb_queue_head_init(&dev->done); |
| skb_queue_head_init(&dev->rxq_pause); |
| skb_queue_head_init(&dev->txq_pend); |
| mutex_init(&dev->phy_mutex); |
| |
| tasklet_init(&dev->bh, lan78xx_bh, (unsigned long)dev); |
| INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork); |
| init_usb_anchor(&dev->deferred); |
| |
| netdev->netdev_ops = &lan78xx_netdev_ops; |
| netdev->watchdog_timeo = TX_TIMEOUT_JIFFIES; |
| netdev->ethtool_ops = &lan78xx_ethtool_ops; |
| |
| dev->stat_monitor.function = lan78xx_stat_monitor; |
| dev->stat_monitor.data = (unsigned long)dev; |
| dev->delta = 1; |
| init_timer(&dev->stat_monitor); |
| |
| mutex_init(&dev->stats.access_lock); |
| |
| ret = lan78xx_bind(dev, intf); |
| if (ret < 0) |
| goto out2; |
| strcpy(netdev->name, "eth%d"); |
| |
| if (netdev->mtu > (dev->hard_mtu - netdev->hard_header_len)) |
| netdev->mtu = dev->hard_mtu - netdev->hard_header_len; |
| |
| dev->ep_blkin = (intf->cur_altsetting)->endpoint + 0; |
| dev->ep_blkout = (intf->cur_altsetting)->endpoint + 1; |
| dev->ep_intr = (intf->cur_altsetting)->endpoint + 2; |
| |
| dev->pipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE); |
| dev->pipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE); |
| |
| dev->pipe_intr = usb_rcvintpipe(dev->udev, |
| dev->ep_intr->desc.bEndpointAddress & |
| USB_ENDPOINT_NUMBER_MASK); |
| period = dev->ep_intr->desc.bInterval; |
| |
| maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0); |
| buf = kmalloc(maxp, GFP_KERNEL); |
| if (buf) { |
| dev->urb_intr = usb_alloc_urb(0, GFP_KERNEL); |
| if (!dev->urb_intr) { |
| kfree(buf); |
| goto out3; |
| } else { |
| usb_fill_int_urb(dev->urb_intr, dev->udev, |
| dev->pipe_intr, buf, maxp, |
| intr_complete, dev, period); |
| } |
| } |
| |
| dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1); |
| |
| /* driver requires remote-wakeup capability during autosuspend. */ |
| intf->needs_remote_wakeup = 1; |
| |
| ret = register_netdev(netdev); |
| if (ret != 0) { |
| netif_err(dev, probe, netdev, "couldn't register the device\n"); |
| goto out2; |
| } |
| |
| usb_set_intfdata(intf, dev); |
| |
| ret = device_set_wakeup_enable(&udev->dev, true); |
| |
| /* Default delay of 2sec has more overhead than advantage. |
| * Set to 10sec as default. |
| */ |
| pm_runtime_set_autosuspend_delay(&udev->dev, |
| DEFAULT_AUTOSUSPEND_DELAY); |
| |
| return 0; |
| |
| out3: |
| lan78xx_unbind(dev, intf); |
| out2: |
| free_netdev(netdev); |
| out1: |
| usb_put_dev(udev); |
| |
| return ret; |
| } |
| |
| static u16 lan78xx_wakeframe_crc16(const u8 *buf, int len) |
| { |
| const u16 crc16poly = 0x8005; |
| int i; |
| u16 bit, crc, msb; |
| u8 data; |
| |
| crc = 0xFFFF; |
| for (i = 0; i < len; i++) { |
| data = *buf++; |
| for (bit = 0; bit < 8; bit++) { |
| msb = crc >> 15; |
| crc <<= 1; |
| |
| if (msb ^ (u16)(data & 1)) { |
| crc ^= crc16poly; |
| crc |= (u16)0x0001U; |
| } |
| data >>= 1; |
| } |
| } |
| |
| return crc; |
| } |
| |
| static int lan78xx_set_suspend(struct lan78xx_net *dev, u32 wol) |
| { |
| u32 buf; |
| int ret; |
| int mask_index; |
| u16 crc; |
| u32 temp_wucsr; |
| u32 temp_pmt_ctl; |
| const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; |
| const u8 ipv6_multicast[3] = { 0x33, 0x33 }; |
| const u8 arp_type[2] = { 0x08, 0x06 }; |
| |
| ret = lan78xx_read_reg(dev, MAC_TX, &buf); |
| buf &= ~MAC_TX_TXEN_; |
| ret = lan78xx_write_reg(dev, MAC_TX, buf); |
| ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| buf &= ~MAC_RX_RXEN_; |
| ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| |
| ret = lan78xx_write_reg(dev, WUCSR, 0); |
| ret = lan78xx_write_reg(dev, WUCSR2, 0); |
| ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); |
| |
| temp_wucsr = 0; |
| |
| temp_pmt_ctl = 0; |
| ret = lan78xx_read_reg(dev, PMT_CTL, &temp_pmt_ctl); |
| temp_pmt_ctl &= ~PMT_CTL_RES_CLR_WKP_EN_; |
| temp_pmt_ctl |= PMT_CTL_RES_CLR_WKP_STS_; |
| |
| for (mask_index = 0; mask_index < NUM_OF_WUF_CFG; mask_index++) |
| ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 0); |
| |
| mask_index = 0; |
| if (wol & WAKE_PHY) { |
| temp_pmt_ctl |= PMT_CTL_PHY_WAKE_EN_; |
| |
| temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| } |
| if (wol & WAKE_MAGIC) { |
| temp_wucsr |= WUCSR_MPEN_; |
| |
| temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| temp_pmt_ctl |= PMT_CTL_SUS_MODE_3_; |
| } |
| if (wol & WAKE_BCAST) { |
| temp_wucsr |= WUCSR_BCST_EN_; |
| |
| temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| } |
| if (wol & WAKE_MCAST) { |
| temp_wucsr |= WUCSR_WAKE_EN_; |
| |
| /* set WUF_CFG & WUF_MASK for IPv4 Multicast */ |
| crc = lan78xx_wakeframe_crc16(ipv4_multicast, 3); |
| ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), |
| WUF_CFGX_EN_ | |
| WUF_CFGX_TYPE_MCAST_ | |
| (0 << WUF_CFGX_OFFSET_SHIFT_) | |
| (crc & WUF_CFGX_CRC16_MASK_)); |
| |
| ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 7); |
| ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); |
| ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); |
| ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); |
| mask_index++; |
| |
| /* for IPv6 Multicast */ |
| crc = lan78xx_wakeframe_crc16(ipv6_multicast, 2); |
| ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), |
| WUF_CFGX_EN_ | |
| WUF_CFGX_TYPE_MCAST_ | |
| (0 << WUF_CFGX_OFFSET_SHIFT_) | |
| (crc & WUF_CFGX_CRC16_MASK_)); |
| |
| ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 3); |
| ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); |
| ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); |
| ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); |
| mask_index++; |
| |
| temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| } |
| if (wol & WAKE_UCAST) { |
| temp_wucsr |= WUCSR_PFDA_EN_; |
| |
| temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| } |
| if (wol & WAKE_ARP) { |
| temp_wucsr |= WUCSR_WAKE_EN_; |
| |
| /* set WUF_CFG & WUF_MASK |
| * for packettype (offset 12,13) = ARP (0x0806) |
| */ |
| crc = lan78xx_wakeframe_crc16(arp_type, 2); |
| ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), |
| WUF_CFGX_EN_ | |
| WUF_CFGX_TYPE_ALL_ | |
| (0 << WUF_CFGX_OFFSET_SHIFT_) | |
| (crc & WUF_CFGX_CRC16_MASK_)); |
| |
| ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000); |
| ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); |
| ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); |
| ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); |
| mask_index++; |
| |
| temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| } |
| |
| ret = lan78xx_write_reg(dev, WUCSR, temp_wucsr); |
| |
| /* when multiple WOL bits are set */ |
| if (hweight_long((unsigned long)wol) > 1) { |
| temp_pmt_ctl |= PMT_CTL_WOL_EN_; |
| temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; |
| temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; |
| } |
| ret = lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl); |
| |
| /* clear WUPS */ |
| ret = lan78xx_read_reg(dev, PMT_CTL, &buf); |
| buf |= PMT_CTL_WUPS_MASK_; |
| ret = lan78xx_write_reg(dev, PMT_CTL, buf); |
| |
| ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| buf |= MAC_RX_RXEN_; |
| ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| |
| return 0; |
| } |
| |
| int lan78xx_suspend(struct usb_interface *intf, pm_message_t message) |
| { |
| struct lan78xx_net *dev = usb_get_intfdata(intf); |
| struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
| u32 buf; |
| int ret; |
| int event; |
| |
| event = message.event; |
| |
| if (!dev->suspend_count++) { |
| spin_lock_irq(&dev->txq.lock); |
| /* don't autosuspend while transmitting */ |
| if ((skb_queue_len(&dev->txq) || |
| skb_queue_len(&dev->txq_pend)) && |
| PMSG_IS_AUTO(message)) { |
| spin_unlock_irq(&dev->txq.lock); |
| ret = -EBUSY; |
| goto out; |
| } else { |
| set_bit(EVENT_DEV_ASLEEP, &dev->flags); |
| spin_unlock_irq(&dev->txq.lock); |
| } |
| |
| /* stop TX & RX */ |
| ret = lan78xx_read_reg(dev, MAC_TX, &buf); |
| buf &= ~MAC_TX_TXEN_; |
| ret = lan78xx_write_reg(dev, MAC_TX, buf); |
| ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| buf &= ~MAC_RX_RXEN_; |
| ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| |
| /* empty out the rx and queues */ |
| netif_device_detach(dev->net); |
| lan78xx_terminate_urbs(dev); |
| usb_kill_urb(dev->urb_intr); |
| |
| /* reattach */ |
| netif_device_attach(dev->net); |
| } |
| |
| if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { |
| del_timer(&dev->stat_monitor); |
| |
| if (PMSG_IS_AUTO(message)) { |
| /* auto suspend (selective suspend) */ |
| ret = lan78xx_read_reg(dev, MAC_TX, &buf); |
| buf &= ~MAC_TX_TXEN_; |
| ret = lan78xx_write_reg(dev, MAC_TX, buf); |
| ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| buf &= ~MAC_RX_RXEN_; |
| ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| |
| ret = lan78xx_write_reg(dev, WUCSR, 0); |
| ret = lan78xx_write_reg(dev, WUCSR2, 0); |
| ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); |
| |
| /* set goodframe wakeup */ |
| ret = lan78xx_read_reg(dev, WUCSR, &buf); |
| |
| buf |= WUCSR_RFE_WAKE_EN_; |
| buf |= WUCSR_STORE_WAKE_; |
| |
| ret = lan78xx_write_reg(dev, WUCSR, buf); |
| |
| ret = lan78xx_read_reg(dev, PMT_CTL, &buf); |
| |
| buf &= ~PMT_CTL_RES_CLR_WKP_EN_; |
| buf |= PMT_CTL_RES_CLR_WKP_STS_; |
| |
| buf |= PMT_CTL_PHY_WAKE_EN_; |
| buf |= PMT_CTL_WOL_EN_; |
| buf &= ~PMT_CTL_SUS_MODE_MASK_; |
| buf |= PMT_CTL_SUS_MODE_3_; |
| |
| ret = lan78xx_write_reg(dev, PMT_CTL, buf); |
| |
| ret = lan78xx_read_reg(dev, PMT_CTL, &buf); |
| |
| buf |= PMT_CTL_WUPS_MASK_; |
| |
| ret = lan78xx_write_reg(dev, PMT_CTL, buf); |
| |
| ret = lan78xx_read_reg(dev, MAC_RX, &buf); |
| buf |= MAC_RX_RXEN_; |
| ret = lan78xx_write_reg(dev, MAC_RX, buf); |
| } else { |
| lan78xx_set_suspend(dev, pdata->wol); |
| } |
| } |
| |
| ret = 0; |
| out: |
| return ret; |
| } |
| |
| int lan78xx_resume(struct usb_interface *intf) |
| { |
| struct lan78xx_net *dev = usb_get_intfdata(intf); |
| struct sk_buff *skb; |
| struct urb *res; |
| int ret; |
| u32 buf; |
| |
| if (!timer_pending(&dev->stat_monitor)) { |
| dev->delta = 1; |
| mod_timer(&dev->stat_monitor, |
| jiffies + STAT_UPDATE_TIMER); |
| } |
| |
| if (!--dev->suspend_count) { |
| /* resume interrupt URBs */ |
| if (dev->urb_intr && test_bit(EVENT_DEV_OPEN, &dev->flags)) |
| usb_submit_urb(dev->urb_intr, GFP_NOIO); |
| |
| spin_lock_irq(&dev->txq.lock); |
| while ((res = usb_get_from_anchor(&dev->deferred))) { |
| skb = (struct sk_buff *)res->context; |
| ret = usb_submit_urb(res, GFP_ATOMIC); |
| if (ret < 0) { |
| dev_kfree_skb_any(skb); |
| usb_free_urb(res); |
| usb_autopm_put_interface_async(dev->intf); |
| } else { |
| dev->net->trans_start = jiffies; |
| lan78xx_queue_skb(&dev->txq, skb, tx_start); |
| } |
| } |
| |
| clear_bit(EVENT_DEV_ASLEEP, &dev->flags); |
| spin_unlock_irq(&dev->txq.lock); |
| |
| if (test_bit(EVENT_DEV_OPEN, &dev->flags)) { |
| if (!(skb_queue_len(&dev->txq) >= dev->tx_qlen)) |
| netif_start_queue(dev->net); |
| tasklet_schedule(&dev->bh); |
| } |
| } |
| |
| ret = lan78xx_write_reg(dev, WUCSR2, 0); |
| ret = lan78xx_write_reg(dev, WUCSR, 0); |
| ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); |
| |
| ret = lan78xx_write_reg(dev, WUCSR2, WUCSR2_NS_RCD_ | |
| WUCSR2_ARP_RCD_ | |
| WUCSR2_IPV6_TCPSYN_RCD_ | |
| WUCSR2_IPV4_TCPSYN_RCD_); |
| |
| ret = lan78xx_write_reg(dev, WUCSR, WUCSR_EEE_TX_WAKE_ | |
| WUCSR_EEE_RX_WAKE_ | |
| WUCSR_PFDA_FR_ | |
| WUCSR_RFE_WAKE_FR_ | |
| WUCSR_WUFR_ | |
| WUCSR_MPR_ | |
| WUCSR_BCST_FR_); |
| |
| ret = lan78xx_read_reg(dev, MAC_TX, &buf); |
| buf |= MAC_TX_TXEN_; |
| ret = lan78xx_write_reg(dev, MAC_TX, buf); |
| |
| return 0; |
| } |
| |
| int lan78xx_reset_resume(struct usb_interface *intf) |
| { |
| struct lan78xx_net *dev = usb_get_intfdata(intf); |
| |
| lan78xx_reset(dev); |
| |
| lan78xx_phy_init(dev); |
| |
| return lan78xx_resume(intf); |
| } |
| |
| static const struct usb_device_id products[] = { |
| { |
| /* LAN7800 USB Gigabit Ethernet Device */ |
| USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7800_USB_PRODUCT_ID), |
| }, |
| { |
| /* LAN7850 USB Gigabit Ethernet Device */ |
| USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID), |
| }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(usb, products); |
| |
| static struct usb_driver lan78xx_driver = { |
| .name = DRIVER_NAME, |
| .id_table = products, |
| .probe = lan78xx_probe, |
| .disconnect = lan78xx_disconnect, |
| .suspend = lan78xx_suspend, |
| .resume = lan78xx_resume, |
| .reset_resume = lan78xx_reset_resume, |
| .supports_autosuspend = 1, |
| .disable_hub_initiated_lpm = 1, |
| }; |
| |
| module_usb_driver(lan78xx_driver); |
| |
| MODULE_AUTHOR(DRIVER_AUTHOR); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |