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4195 lines
103 KiB
4195 lines
103 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (C) 2015 Microchip Technology |
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*/ |
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#include <linux/version.h> |
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#include <linux/module.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/ethtool.h> |
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#include <linux/usb.h> |
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#include <linux/crc32.h> |
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#include <linux/signal.h> |
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#include <linux/slab.h> |
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#include <linux/if_vlan.h> |
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#include <linux/uaccess.h> |
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#include <linux/linkmode.h> |
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#include <linux/list.h> |
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#include <linux/ip.h> |
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#include <linux/ipv6.h> |
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#include <linux/mdio.h> |
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#include <linux/phy.h> |
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#include <net/ip6_checksum.h> |
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#include <net/vxlan.h> |
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#include <linux/interrupt.h> |
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#include <linux/irqdomain.h> |
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#include <linux/irq.h> |
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#include <linux/irqchip/chained_irq.h> |
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#include <linux/microchipphy.h> |
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#include <linux/phy_fixed.h> |
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#include <linux/of_mdio.h> |
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#include <linux/of_net.h> |
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#include "lan78xx.h" |
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|
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#define DRIVER_AUTHOR "WOOJUNG HUH <[email protected]>" |
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#define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices" |
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#define DRIVER_NAME "lan78xx" |
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|
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#define TX_TIMEOUT_JIFFIES (5 * HZ) |
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#define THROTTLE_JIFFIES (HZ / 8) |
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#define UNLINK_TIMEOUT_MS 3 |
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|
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#define RX_MAX_QUEUE_MEMORY (60 * 1518) |
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|
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#define SS_USB_PKT_SIZE (1024) |
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#define HS_USB_PKT_SIZE (512) |
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#define FS_USB_PKT_SIZE (64) |
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|
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#define MAX_RX_FIFO_SIZE (12 * 1024) |
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#define MAX_TX_FIFO_SIZE (12 * 1024) |
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#define DEFAULT_BURST_CAP_SIZE (MAX_TX_FIFO_SIZE) |
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#define DEFAULT_BULK_IN_DELAY (0x0800) |
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#define MAX_SINGLE_PACKET_SIZE (9000) |
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#define DEFAULT_TX_CSUM_ENABLE (true) |
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#define DEFAULT_RX_CSUM_ENABLE (true) |
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#define DEFAULT_TSO_CSUM_ENABLE (true) |
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#define DEFAULT_VLAN_FILTER_ENABLE (true) |
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#define DEFAULT_VLAN_RX_OFFLOAD (true) |
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#define TX_OVERHEAD (8) |
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#define RXW_PADDING 2 |
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|
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#define LAN78XX_USB_VENDOR_ID (0x0424) |
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#define LAN7800_USB_PRODUCT_ID (0x7800) |
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#define LAN7850_USB_PRODUCT_ID (0x7850) |
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#define LAN7801_USB_PRODUCT_ID (0x7801) |
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#define LAN78XX_EEPROM_MAGIC (0x78A5) |
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#define LAN78XX_OTP_MAGIC (0x78F3) |
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|
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#define MII_READ 1 |
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#define MII_WRITE 0 |
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|
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#define EEPROM_INDICATOR (0xA5) |
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#define EEPROM_MAC_OFFSET (0x01) |
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#define MAX_EEPROM_SIZE 512 |
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#define OTP_INDICATOR_1 (0xF3) |
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#define OTP_INDICATOR_2 (0xF7) |
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|
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#define WAKE_ALL (WAKE_PHY | WAKE_UCAST | \ |
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WAKE_MCAST | WAKE_BCAST | \ |
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WAKE_ARP | WAKE_MAGIC) |
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|
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/* USB related defines */ |
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#define BULK_IN_PIPE 1 |
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#define BULK_OUT_PIPE 2 |
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|
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/* default autosuspend delay (mSec)*/ |
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#define DEFAULT_AUTOSUSPEND_DELAY (10 * 1000) |
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|
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/* statistic update interval (mSec) */ |
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#define STAT_UPDATE_TIMER (1 * 1000) |
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|
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/* defines interrupts from interrupt EP */ |
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#define MAX_INT_EP (32) |
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#define INT_EP_INTEP (31) |
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#define INT_EP_OTP_WR_DONE (28) |
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#define INT_EP_EEE_TX_LPI_START (26) |
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#define INT_EP_EEE_TX_LPI_STOP (25) |
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#define INT_EP_EEE_RX_LPI (24) |
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#define INT_EP_MAC_RESET_TIMEOUT (23) |
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#define INT_EP_RDFO (22) |
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#define INT_EP_TXE (21) |
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#define INT_EP_USB_STATUS (20) |
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#define INT_EP_TX_DIS (19) |
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#define INT_EP_RX_DIS (18) |
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#define INT_EP_PHY (17) |
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#define INT_EP_DP (16) |
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#define INT_EP_MAC_ERR (15) |
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#define INT_EP_TDFU (14) |
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#define INT_EP_TDFO (13) |
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#define INT_EP_UTX (12) |
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#define INT_EP_GPIO_11 (11) |
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#define INT_EP_GPIO_10 (10) |
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#define INT_EP_GPIO_9 (9) |
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#define INT_EP_GPIO_8 (8) |
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#define INT_EP_GPIO_7 (7) |
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#define INT_EP_GPIO_6 (6) |
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#define INT_EP_GPIO_5 (5) |
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#define INT_EP_GPIO_4 (4) |
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#define INT_EP_GPIO_3 (3) |
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#define INT_EP_GPIO_2 (2) |
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#define INT_EP_GPIO_1 (1) |
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#define INT_EP_GPIO_0 (0) |
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|
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static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = { |
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"RX FCS Errors", |
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"RX Alignment Errors", |
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"Rx Fragment Errors", |
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"RX Jabber Errors", |
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"RX Undersize Frame Errors", |
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"RX Oversize Frame Errors", |
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"RX Dropped Frames", |
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"RX Unicast Byte Count", |
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"RX Broadcast Byte Count", |
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"RX Multicast Byte Count", |
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"RX Unicast Frames", |
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"RX Broadcast Frames", |
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"RX Multicast Frames", |
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"RX Pause Frames", |
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"RX 64 Byte Frames", |
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"RX 65 - 127 Byte Frames", |
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"RX 128 - 255 Byte Frames", |
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"RX 256 - 511 Bytes Frames", |
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"RX 512 - 1023 Byte Frames", |
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"RX 1024 - 1518 Byte Frames", |
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"RX Greater 1518 Byte Frames", |
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"EEE RX LPI Transitions", |
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"EEE RX LPI Time", |
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"TX FCS Errors", |
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"TX Excess Deferral Errors", |
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"TX Carrier Errors", |
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"TX Bad Byte Count", |
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"TX Single Collisions", |
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"TX Multiple Collisions", |
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"TX Excessive Collision", |
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"TX Late Collisions", |
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"TX Unicast Byte Count", |
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"TX Broadcast Byte Count", |
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"TX Multicast Byte Count", |
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"TX Unicast Frames", |
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"TX Broadcast Frames", |
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"TX Multicast Frames", |
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"TX Pause Frames", |
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"TX 64 Byte Frames", |
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"TX 65 - 127 Byte Frames", |
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"TX 128 - 255 Byte Frames", |
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"TX 256 - 511 Bytes Frames", |
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"TX 512 - 1023 Byte Frames", |
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"TX 1024 - 1518 Byte Frames", |
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"TX Greater 1518 Byte Frames", |
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"EEE TX LPI Transitions", |
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"EEE TX LPI Time", |
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}; |
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struct lan78xx_statstage { |
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u32 rx_fcs_errors; |
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u32 rx_alignment_errors; |
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u32 rx_fragment_errors; |
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u32 rx_jabber_errors; |
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u32 rx_undersize_frame_errors; |
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u32 rx_oversize_frame_errors; |
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u32 rx_dropped_frames; |
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u32 rx_unicast_byte_count; |
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u32 rx_broadcast_byte_count; |
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u32 rx_multicast_byte_count; |
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u32 rx_unicast_frames; |
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u32 rx_broadcast_frames; |
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u32 rx_multicast_frames; |
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u32 rx_pause_frames; |
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u32 rx_64_byte_frames; |
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u32 rx_65_127_byte_frames; |
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u32 rx_128_255_byte_frames; |
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u32 rx_256_511_bytes_frames; |
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u32 rx_512_1023_byte_frames; |
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u32 rx_1024_1518_byte_frames; |
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u32 rx_greater_1518_byte_frames; |
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u32 eee_rx_lpi_transitions; |
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u32 eee_rx_lpi_time; |
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u32 tx_fcs_errors; |
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u32 tx_excess_deferral_errors; |
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u32 tx_carrier_errors; |
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u32 tx_bad_byte_count; |
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u32 tx_single_collisions; |
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u32 tx_multiple_collisions; |
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u32 tx_excessive_collision; |
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u32 tx_late_collisions; |
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u32 tx_unicast_byte_count; |
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u32 tx_broadcast_byte_count; |
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u32 tx_multicast_byte_count; |
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u32 tx_unicast_frames; |
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u32 tx_broadcast_frames; |
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u32 tx_multicast_frames; |
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u32 tx_pause_frames; |
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u32 tx_64_byte_frames; |
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u32 tx_65_127_byte_frames; |
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u32 tx_128_255_byte_frames; |
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u32 tx_256_511_bytes_frames; |
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u32 tx_512_1023_byte_frames; |
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u32 tx_1024_1518_byte_frames; |
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u32 tx_greater_1518_byte_frames; |
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u32 eee_tx_lpi_transitions; |
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u32 eee_tx_lpi_time; |
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}; |
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struct lan78xx_statstage64 { |
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u64 rx_fcs_errors; |
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u64 rx_alignment_errors; |
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u64 rx_fragment_errors; |
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u64 rx_jabber_errors; |
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u64 rx_undersize_frame_errors; |
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u64 rx_oversize_frame_errors; |
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u64 rx_dropped_frames; |
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u64 rx_unicast_byte_count; |
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u64 rx_broadcast_byte_count; |
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u64 rx_multicast_byte_count; |
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u64 rx_unicast_frames; |
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u64 rx_broadcast_frames; |
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u64 rx_multicast_frames; |
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u64 rx_pause_frames; |
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u64 rx_64_byte_frames; |
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u64 rx_65_127_byte_frames; |
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u64 rx_128_255_byte_frames; |
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u64 rx_256_511_bytes_frames; |
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u64 rx_512_1023_byte_frames; |
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u64 rx_1024_1518_byte_frames; |
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u64 rx_greater_1518_byte_frames; |
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u64 eee_rx_lpi_transitions; |
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u64 eee_rx_lpi_time; |
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u64 tx_fcs_errors; |
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u64 tx_excess_deferral_errors; |
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u64 tx_carrier_errors; |
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u64 tx_bad_byte_count; |
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u64 tx_single_collisions; |
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u64 tx_multiple_collisions; |
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u64 tx_excessive_collision; |
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u64 tx_late_collisions; |
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u64 tx_unicast_byte_count; |
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u64 tx_broadcast_byte_count; |
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u64 tx_multicast_byte_count; |
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u64 tx_unicast_frames; |
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u64 tx_broadcast_frames; |
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u64 tx_multicast_frames; |
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u64 tx_pause_frames; |
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u64 tx_64_byte_frames; |
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u64 tx_65_127_byte_frames; |
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u64 tx_128_255_byte_frames; |
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u64 tx_256_511_bytes_frames; |
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u64 tx_512_1023_byte_frames; |
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u64 tx_1024_1518_byte_frames; |
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u64 tx_greater_1518_byte_frames; |
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u64 eee_tx_lpi_transitions; |
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u64 eee_tx_lpi_time; |
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}; |
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static u32 lan78xx_regs[] = { |
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ID_REV, |
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INT_STS, |
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HW_CFG, |
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PMT_CTL, |
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E2P_CMD, |
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E2P_DATA, |
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USB_STATUS, |
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VLAN_TYPE, |
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MAC_CR, |
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MAC_RX, |
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MAC_TX, |
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FLOW, |
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ERR_STS, |
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MII_ACC, |
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MII_DATA, |
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EEE_TX_LPI_REQ_DLY, |
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EEE_TW_TX_SYS, |
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EEE_TX_LPI_REM_DLY, |
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WUCSR |
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}; |
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#define PHY_REG_SIZE (32 * sizeof(u32)) |
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struct lan78xx_net; |
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struct lan78xx_priv { |
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struct lan78xx_net *dev; |
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u32 rfe_ctl; |
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u32 mchash_table[DP_SEL_VHF_HASH_LEN]; /* multicat hash table */ |
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u32 pfilter_table[NUM_OF_MAF][2]; /* perfect filter table */ |
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u32 vlan_table[DP_SEL_VHF_VLAN_LEN]; |
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struct mutex dataport_mutex; /* for dataport access */ |
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spinlock_t rfe_ctl_lock; /* for rfe register access */ |
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struct work_struct set_multicast; |
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struct work_struct set_vlan; |
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u32 wol; |
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}; |
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enum skb_state { |
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illegal = 0, |
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tx_start, |
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tx_done, |
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rx_start, |
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rx_done, |
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rx_cleanup, |
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unlink_start |
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}; |
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struct skb_data { /* skb->cb is one of these */ |
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struct urb *urb; |
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struct lan78xx_net *dev; |
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enum skb_state state; |
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size_t length; |
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int num_of_packet; |
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}; |
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struct usb_context { |
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struct usb_ctrlrequest req; |
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struct lan78xx_net *dev; |
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}; |
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#define EVENT_TX_HALT 0 |
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#define EVENT_RX_HALT 1 |
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#define EVENT_RX_MEMORY 2 |
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#define EVENT_STS_SPLIT 3 |
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#define EVENT_LINK_RESET 4 |
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#define EVENT_RX_PAUSED 5 |
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#define EVENT_DEV_WAKING 6 |
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#define EVENT_DEV_ASLEEP 7 |
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#define EVENT_DEV_OPEN 8 |
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#define EVENT_STAT_UPDATE 9 |
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|
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struct statstage { |
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struct mutex access_lock; /* for stats access */ |
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struct lan78xx_statstage saved; |
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struct lan78xx_statstage rollover_count; |
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struct lan78xx_statstage rollover_max; |
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struct lan78xx_statstage64 curr_stat; |
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}; |
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struct irq_domain_data { |
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struct irq_domain *irqdomain; |
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unsigned int phyirq; |
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struct irq_chip *irqchip; |
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irq_flow_handler_t irq_handler; |
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u32 irqenable; |
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struct mutex irq_lock; /* for irq bus access */ |
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}; |
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struct lan78xx_net { |
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struct net_device *net; |
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struct usb_device *udev; |
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struct usb_interface *intf; |
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void *driver_priv; |
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|
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int rx_qlen; |
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int tx_qlen; |
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struct sk_buff_head rxq; |
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struct sk_buff_head txq; |
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struct sk_buff_head done; |
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struct sk_buff_head rxq_pause; |
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struct sk_buff_head txq_pend; |
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|
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struct tasklet_struct bh; |
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struct delayed_work wq; |
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int msg_enable; |
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|
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struct urb *urb_intr; |
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struct usb_anchor deferred; |
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|
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struct mutex phy_mutex; /* for phy access */ |
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unsigned pipe_in, pipe_out, pipe_intr; |
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|
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u32 hard_mtu; /* count any extra framing */ |
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size_t rx_urb_size; /* size for rx urbs */ |
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|
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unsigned long flags; |
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wait_queue_head_t *wait; |
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unsigned char suspend_count; |
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|
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unsigned maxpacket; |
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struct timer_list delay; |
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struct timer_list stat_monitor; |
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unsigned long data[5]; |
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int link_on; |
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u8 mdix_ctrl; |
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u32 chipid; |
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u32 chiprev; |
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struct mii_bus *mdiobus; |
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phy_interface_t interface; |
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int fc_autoneg; |
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u8 fc_request_control; |
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|
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int delta; |
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struct statstage stats; |
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|
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struct irq_domain_data domain_data; |
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}; |
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|
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/* define external phy id */ |
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#define PHY_LAN8835 (0x0007C130) |
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#define PHY_KSZ9031RNX (0x00221620) |
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|
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/* use ethtool to change the level for any given device */ |
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static int msg_level = -1; |
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module_param(msg_level, int, 0); |
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MODULE_PARM_DESC(msg_level, "Override default message level"); |
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|
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/* TSO seems to be having some issue with Selective Acknowledge (SACK) that |
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* results in lost data never being retransmitted. |
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* Disable it by default now, but adds a module parameter to enable it for |
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* debug purposes (the full cause is not currently understood). |
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*/ |
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static bool enable_tso; |
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module_param(enable_tso, bool, 0644); |
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MODULE_PARM_DESC(enable_tso, "Enables TCP segmentation offload"); |
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|
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#define INT_URB_MICROFRAMES_PER_MS 8 |
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static int int_urb_interval_ms = 8; |
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module_param(int_urb_interval_ms, int, 0); |
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MODULE_PARM_DESC(int_urb_interval_ms, "Override usb interrupt urb interval"); |
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|
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static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data) |
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{ |
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u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL); |
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int ret; |
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|
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if (!buf) |
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return -ENOMEM; |
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|
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ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), |
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USB_VENDOR_REQUEST_READ_REGISTER, |
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
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0, index, buf, 4, USB_CTRL_GET_TIMEOUT); |
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if (likely(ret >= 0)) { |
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le32_to_cpus(buf); |
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*data = *buf; |
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} else { |
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netdev_warn(dev->net, |
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"Failed to read register index 0x%08x. ret = %d", |
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index, ret); |
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} |
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|
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kfree(buf); |
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|
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return ret; |
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} |
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|
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static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data) |
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{ |
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u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL); |
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int ret; |
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|
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if (!buf) |
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return -ENOMEM; |
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|
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*buf = data; |
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cpu_to_le32s(buf); |
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|
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ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), |
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USB_VENDOR_REQUEST_WRITE_REGISTER, |
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
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0, index, buf, 4, USB_CTRL_SET_TIMEOUT); |
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if (unlikely(ret < 0)) { |
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netdev_warn(dev->net, |
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"Failed to write register index 0x%08x. ret = %d", |
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index, ret); |
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} |
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|
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kfree(buf); |
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|
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return ret; |
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} |
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|
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static int lan78xx_read_stats(struct lan78xx_net *dev, |
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struct lan78xx_statstage *data) |
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{ |
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int ret = 0; |
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int i; |
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struct lan78xx_statstage *stats; |
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u32 *src; |
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u32 *dst; |
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|
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stats = kmalloc(sizeof(*stats), GFP_KERNEL); |
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if (!stats) |
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return -ENOMEM; |
|
|
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ret = usb_control_msg(dev->udev, |
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usb_rcvctrlpipe(dev->udev, 0), |
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USB_VENDOR_REQUEST_GET_STATS, |
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
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0, |
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0, |
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(void *)stats, |
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sizeof(*stats), |
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USB_CTRL_SET_TIMEOUT); |
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if (likely(ret >= 0)) { |
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src = (u32 *)stats; |
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dst = (u32 *)data; |
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for (i = 0; i < sizeof(*stats)/sizeof(u32); i++) { |
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le32_to_cpus(&src[i]); |
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dst[i] = src[i]; |
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} |
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} else { |
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netdev_warn(dev->net, |
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"Failed to read stat ret = %d", ret); |
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} |
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|
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kfree(stats); |
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|
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return ret; |
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} |
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|
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#define check_counter_rollover(struct1, dev_stats, member) { \ |
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if (struct1->member < dev_stats.saved.member) \ |
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dev_stats.rollover_count.member++; \ |
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} |
|
|
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static void lan78xx_check_stat_rollover(struct lan78xx_net *dev, |
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struct lan78xx_statstage *stats) |
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{ |
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check_counter_rollover(stats, dev->stats, rx_fcs_errors); |
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check_counter_rollover(stats, dev->stats, rx_alignment_errors); |
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check_counter_rollover(stats, dev->stats, rx_fragment_errors); |
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check_counter_rollover(stats, dev->stats, rx_jabber_errors); |
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check_counter_rollover(stats, dev->stats, rx_undersize_frame_errors); |
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check_counter_rollover(stats, dev->stats, rx_oversize_frame_errors); |
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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; |
|
u32 buf; |
|
unsigned long timeout; |
|
|
|
lan78xx_read_reg(dev, OTP_PWR_DN, &buf); |
|
|
|
if (buf & OTP_PWR_DN_PWRDN_N_) { |
|
/* clear it and wait to be cleared */ |
|
lan78xx_write_reg(dev, OTP_PWR_DN, 0); |
|
|
|
timeout = jiffies + HZ; |
|
do { |
|
usleep_range(1, 10); |
|
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++) { |
|
lan78xx_write_reg(dev, OTP_ADDR1, |
|
((offset + i) >> 8) & OTP_ADDR1_15_11); |
|
lan78xx_write_reg(dev, OTP_ADDR2, |
|
((offset + i) & OTP_ADDR2_10_3)); |
|
|
|
lan78xx_write_reg(dev, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_); |
|
lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); |
|
|
|
timeout = jiffies + HZ; |
|
do { |
|
udelay(1); |
|
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_); |
|
|
|
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; |
|
u32 buf; |
|
unsigned long timeout; |
|
|
|
lan78xx_read_reg(dev, OTP_PWR_DN, &buf); |
|
|
|
if (buf & OTP_PWR_DN_PWRDN_N_) { |
|
/* clear it and wait to be cleared */ |
|
lan78xx_write_reg(dev, OTP_PWR_DN, 0); |
|
|
|
timeout = jiffies + HZ; |
|
do { |
|
udelay(1); |
|
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 */ |
|
lan78xx_write_reg(dev, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_); |
|
|
|
for (i = 0; i < length; i++) { |
|
lan78xx_write_reg(dev, OTP_ADDR1, |
|
((offset + i) >> 8) & OTP_ADDR1_15_11); |
|
lan78xx_write_reg(dev, OTP_ADDR2, |
|
((offset + i) & OTP_ADDR2_10_3)); |
|
lan78xx_write_reg(dev, OTP_PRGM_DATA, data[i]); |
|
lan78xx_write_reg(dev, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_); |
|
lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); |
|
|
|
timeout = jiffies + HZ; |
|
do { |
|
udelay(1); |
|
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_2) |
|
offset += 0x100; |
|
else if (sig != OTP_INDICATOR_1) |
|
ret = -EINVAL; |
|
if (!ret) |
|
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; |
|
|
|
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++) { |
|
lan78xx_write_reg(dev, MAF_HI(i), 0); |
|
lan78xx_write_reg(dev, MAF_LO(i), |
|
pdata->pfilter_table[i][1]); |
|
lan78xx_write_reg(dev, MAF_HI(i), |
|
pdata->pfilter_table[i][0]); |
|
} |
|
|
|
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; |
|
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")); |
|
|
|
lan78xx_write_reg(dev, FCT_FLOW, fct_flow); |
|
|
|
/* threshold value should be set before enabling flow */ |
|
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_link_ksettings ecmd; |
|
int ladv, radv, ret; |
|
u32 buf; |
|
|
|
/* clear LAN78xx interrupt status */ |
|
ret = lan78xx_write_reg(dev, INT_STS, INT_STS_PHY_INT_); |
|
if (unlikely(ret < 0)) |
|
return -EIO; |
|
|
|
/* Acknowledge any pending PHY interrupt, lest it be the last */ |
|
phy_read(phydev, LAN88XX_INT_STS); |
|
|
|
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; |
|
|
|
del_timer(&dev->stat_monitor); |
|
} else if (phydev->link && !dev->link_on) { |
|
dev->link_on = true; |
|
|
|
phy_ethtool_ksettings_get(phydev, &ecmd); |
|
|
|
if (dev->udev->speed == USB_SPEED_SUPER) { |
|
if (ecmd.base.speed == 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", |
|
ecmd.base.speed, ecmd.base.duplex, ladv, radv); |
|
|
|
ret = lan78xx_update_flowcontrol(dev, ecmd.base.duplex, ladv, |
|
radv); |
|
|
|
if (!timer_pending(&dev->stat_monitor)) { |
|
dev->delta = 1; |
|
mod_timer(&dev->stat_monitor, |
|
jiffies + STAT_UPDATE_TIMER); |
|
} |
|
|
|
tasklet_schedule(&dev->bh); |
|
} |
|
|
|
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. |
|
*/ |
|
static 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; |
|
} |
|
|
|
intdata = get_unaligned_le32(urb->transfer_buffer); |
|
|
|
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); |
|
|
|
if (dev->domain_data.phyirq > 0) { |
|
local_irq_disable(); |
|
generic_handle_irq(dev->domain_data.phyirq); |
|
local_irq_enable(); |
|
} |
|
} 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); |
|
int ret; |
|
|
|
ret = usb_autopm_get_interface(dev->intf); |
|
if (ret) |
|
return ret; |
|
|
|
ee->magic = LAN78XX_EEPROM_MAGIC; |
|
|
|
ret = lan78xx_read_raw_eeprom(dev, ee->offset, ee->len, data); |
|
|
|
usb_autopm_put_interface(dev->intf); |
|
|
|
return ret; |
|
} |
|
|
|
static int lan78xx_ethtool_set_eeprom(struct net_device *netdev, |
|
struct ethtool_eeprom *ee, u8 *data) |
|
{ |
|
struct lan78xx_net *dev = netdev_priv(netdev); |
|
int ret; |
|
|
|
ret = usb_autopm_get_interface(dev->intf); |
|
if (ret) |
|
return ret; |
|
|
|
/* Invalid EEPROM_INDICATOR at offset zero will result in a failure |
|
* to load data from EEPROM |
|
*/ |
|
if (ee->magic == LAN78XX_EEPROM_MAGIC) |
|
ret = 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)) |
|
ret = lan78xx_write_raw_otp(dev, ee->offset, ee->len, data); |
|
|
|
usb_autopm_put_interface(dev->intf); |
|
|
|
return ret; |
|
} |
|
|
|
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; |
|
|
|
if (wol->wolopts & ~WAKE_ALL) |
|
return -EINVAL; |
|
|
|
pdata->wol = wol->wolopts; |
|
|
|
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; |
|
} |
|
|
|
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)); |
|
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_link_ksettings(struct net_device *net, |
|
struct ethtool_link_ksettings *cmd) |
|
{ |
|
struct lan78xx_net *dev = netdev_priv(net); |
|
struct phy_device *phydev = net->phydev; |
|
int ret; |
|
|
|
ret = usb_autopm_get_interface(dev->intf); |
|
if (ret < 0) |
|
return ret; |
|
|
|
phy_ethtool_ksettings_get(phydev, cmd); |
|
|
|
usb_autopm_put_interface(dev->intf); |
|
|
|
return ret; |
|
} |
|
|
|
static int lan78xx_set_link_ksettings(struct net_device *net, |
|
const struct ethtool_link_ksettings *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; |
|
|
|
/* change speed & duplex */ |
|
ret = phy_ethtool_ksettings_set(phydev, cmd); |
|
|
|
if (!cmd->base.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_link_ksettings ecmd; |
|
|
|
phy_ethtool_ksettings_get(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_link_ksettings ecmd; |
|
int ret; |
|
|
|
phy_ethtool_ksettings_get(phydev, &ecmd); |
|
|
|
if (pause->autoneg && !ecmd.base.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.base.autoneg) { |
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(fc) = { 0, }; |
|
u32 mii_adv; |
|
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT, |
|
ecmd.link_modes.advertising); |
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, |
|
ecmd.link_modes.advertising); |
|
mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control); |
|
mii_adv_to_linkmode_adv_t(fc, mii_adv); |
|
linkmode_or(ecmd.link_modes.advertising, fc, |
|
ecmd.link_modes.advertising); |
|
|
|
phy_ethtool_ksettings_set(phydev, &ecmd); |
|
} |
|
|
|
dev->fc_autoneg = pause->autoneg; |
|
|
|
ret = 0; |
|
exit: |
|
return ret; |
|
} |
|
|
|
static int lan78xx_get_regs_len(struct net_device *netdev) |
|
{ |
|
if (!netdev->phydev) |
|
return (sizeof(lan78xx_regs)); |
|
else |
|
return (sizeof(lan78xx_regs) + PHY_REG_SIZE); |
|
} |
|
|
|
static void |
|
lan78xx_get_regs(struct net_device *netdev, struct ethtool_regs *regs, |
|
void *buf) |
|
{ |
|
u32 *data = buf; |
|
int i, j; |
|
struct lan78xx_net *dev = netdev_priv(netdev); |
|
|
|
/* Read Device/MAC registers */ |
|
for (i = 0; i < ARRAY_SIZE(lan78xx_regs); i++) |
|
lan78xx_read_reg(dev, lan78xx_regs[i], &data[i]); |
|
|
|
if (!netdev->phydev) |
|
return; |
|
|
|
/* Read PHY registers */ |
|
for (j = 0; j < 32; i++, j++) |
|
data[i] = phy_read(netdev->phydev, j); |
|
} |
|
|
|
static const struct ethtool_ops lan78xx_ethtool_ops = { |
|
.get_link = lan78xx_get_link, |
|
.nway_reset = phy_ethtool_nway_reset, |
|
.get_drvinfo = lan78xx_get_drvinfo, |
|
.get_msglevel = lan78xx_get_msglevel, |
|
.set_msglevel = lan78xx_set_msglevel, |
|
.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, |
|
.get_link_ksettings = lan78xx_get_link_ksettings, |
|
.set_link_ksettings = lan78xx_set_link_ksettings, |
|
.get_regs_len = lan78xx_get_regs_len, |
|
.get_regs = lan78xx_get_regs, |
|
}; |
|
|
|
static void lan78xx_init_mac_address(struct lan78xx_net *dev) |
|
{ |
|
u32 addr_lo, addr_hi; |
|
u8 addr[6]; |
|
|
|
lan78xx_read_reg(dev, RX_ADDRL, &addr_lo); |
|
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)) { |
|
if (!eth_platform_get_mac_address(&dev->udev->dev, addr)) { |
|
/* valid address present in Device Tree */ |
|
netif_dbg(dev, ifup, dev->net, |
|
"MAC address read from Device Tree"); |
|
} else if (((lan78xx_read_eeprom(dev, EEPROM_MAC_OFFSET, |
|
ETH_ALEN, addr) == 0) || |
|
(lan78xx_read_otp(dev, EEPROM_MAC_OFFSET, |
|
ETH_ALEN, addr) == 0)) && |
|
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 */ |
|
eth_random_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); |
|
|
|
lan78xx_write_reg(dev, RX_ADDRL, addr_lo); |
|
lan78xx_write_reg(dev, RX_ADDRH, addr_hi); |
|
} |
|
|
|
lan78xx_write_reg(dev, MAF_LO(0), addr_lo); |
|
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) |
|
{ |
|
struct device_node *node; |
|
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"; |
|
dev->mdiobus->parent = &dev->udev->dev; |
|
|
|
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; |
|
case ID_REV_CHIP_ID_7801_: |
|
/* scan thru PHYAD[2..0] */ |
|
dev->mdiobus->phy_mask = ~(0xFF); |
|
break; |
|
} |
|
|
|
node = of_get_child_by_name(dev->udev->dev.of_node, "mdio"); |
|
ret = of_mdiobus_register(dev->mdiobus, node); |
|
of_node_put(node); |
|
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) |
|
{ |
|
struct phy_device *phydev = net->phydev; |
|
int temp; |
|
|
|
/* At forced 100 F/H mode, chip may fail to set mode correctly |
|
* when cable is switched between long(~50+m) and short one. |
|
* As workaround, set to 10 before setting to 100 |
|
* at forced 100 F/H mode. |
|
*/ |
|
if (!phydev->autoneg && (phydev->speed == 100)) { |
|
/* disable phy interrupt */ |
|
temp = phy_read(phydev, LAN88XX_INT_MASK); |
|
temp &= ~LAN88XX_INT_MASK_MDINTPIN_EN_; |
|
phy_write(phydev, LAN88XX_INT_MASK, temp); |
|
|
|
temp = phy_read(phydev, MII_BMCR); |
|
temp &= ~(BMCR_SPEED100 | BMCR_SPEED1000); |
|
phy_write(phydev, MII_BMCR, temp); /* set to 10 first */ |
|
temp |= BMCR_SPEED100; |
|
phy_write(phydev, MII_BMCR, temp); /* set to 100 later */ |
|
|
|
/* clear pending interrupt generated while workaround */ |
|
temp = phy_read(phydev, LAN88XX_INT_STS); |
|
|
|
/* enable phy interrupt back */ |
|
temp = phy_read(phydev, LAN88XX_INT_MASK); |
|
temp |= LAN88XX_INT_MASK_MDINTPIN_EN_; |
|
phy_write(phydev, LAN88XX_INT_MASK, temp); |
|
} |
|
} |
|
|
|
static int irq_map(struct irq_domain *d, unsigned int irq, |
|
irq_hw_number_t hwirq) |
|
{ |
|
struct irq_domain_data *data = d->host_data; |
|
|
|
irq_set_chip_data(irq, data); |
|
irq_set_chip_and_handler(irq, data->irqchip, data->irq_handler); |
|
irq_set_noprobe(irq); |
|
|
|
return 0; |
|
} |
|
|
|
static void irq_unmap(struct irq_domain *d, unsigned int irq) |
|
{ |
|
irq_set_chip_and_handler(irq, NULL, NULL); |
|
irq_set_chip_data(irq, NULL); |
|
} |
|
|
|
static const struct irq_domain_ops chip_domain_ops = { |
|
.map = irq_map, |
|
.unmap = irq_unmap, |
|
}; |
|
|
|
static void lan78xx_irq_mask(struct irq_data *irqd) |
|
{ |
|
struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); |
|
|
|
data->irqenable &= ~BIT(irqd_to_hwirq(irqd)); |
|
} |
|
|
|
static void lan78xx_irq_unmask(struct irq_data *irqd) |
|
{ |
|
struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); |
|
|
|
data->irqenable |= BIT(irqd_to_hwirq(irqd)); |
|
} |
|
|
|
static void lan78xx_irq_bus_lock(struct irq_data *irqd) |
|
{ |
|
struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); |
|
|
|
mutex_lock(&data->irq_lock); |
|
} |
|
|
|
static void lan78xx_irq_bus_sync_unlock(struct irq_data *irqd) |
|
{ |
|
struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); |
|
struct lan78xx_net *dev = |
|
container_of(data, struct lan78xx_net, domain_data); |
|
u32 buf; |
|
|
|
/* call register access here because irq_bus_lock & irq_bus_sync_unlock |
|
* are only two callbacks executed in non-atomic contex. |
|
*/ |
|
lan78xx_read_reg(dev, INT_EP_CTL, &buf); |
|
if (buf != data->irqenable) |
|
lan78xx_write_reg(dev, INT_EP_CTL, data->irqenable); |
|
|
|
mutex_unlock(&data->irq_lock); |
|
} |
|
|
|
static struct irq_chip lan78xx_irqchip = { |
|
.name = "lan78xx-irqs", |
|
.irq_mask = lan78xx_irq_mask, |
|
.irq_unmask = lan78xx_irq_unmask, |
|
.irq_bus_lock = lan78xx_irq_bus_lock, |
|
.irq_bus_sync_unlock = lan78xx_irq_bus_sync_unlock, |
|
}; |
|
|
|
static int lan78xx_setup_irq_domain(struct lan78xx_net *dev) |
|
{ |
|
struct device_node *of_node; |
|
struct irq_domain *irqdomain; |
|
unsigned int irqmap = 0; |
|
u32 buf; |
|
int ret = 0; |
|
|
|
of_node = dev->udev->dev.parent->of_node; |
|
|
|
mutex_init(&dev->domain_data.irq_lock); |
|
|
|
lan78xx_read_reg(dev, INT_EP_CTL, &buf); |
|
dev->domain_data.irqenable = buf; |
|
|
|
dev->domain_data.irqchip = &lan78xx_irqchip; |
|
dev->domain_data.irq_handler = handle_simple_irq; |
|
|
|
irqdomain = irq_domain_add_simple(of_node, MAX_INT_EP, 0, |
|
&chip_domain_ops, &dev->domain_data); |
|
if (irqdomain) { |
|
/* create mapping for PHY interrupt */ |
|
irqmap = irq_create_mapping(irqdomain, INT_EP_PHY); |
|
if (!irqmap) { |
|
irq_domain_remove(irqdomain); |
|
|
|
irqdomain = NULL; |
|
ret = -EINVAL; |
|
} |
|
} else { |
|
ret = -EINVAL; |
|
} |
|
|
|
dev->domain_data.irqdomain = irqdomain; |
|
dev->domain_data.phyirq = irqmap; |
|
|
|
return ret; |
|
} |
|
|
|
static void lan78xx_remove_irq_domain(struct lan78xx_net *dev) |
|
{ |
|
if (dev->domain_data.phyirq > 0) { |
|
irq_dispose_mapping(dev->domain_data.phyirq); |
|
|
|
if (dev->domain_data.irqdomain) |
|
irq_domain_remove(dev->domain_data.irqdomain); |
|
} |
|
dev->domain_data.phyirq = 0; |
|
dev->domain_data.irqdomain = NULL; |
|
} |
|
|
|
static int lan8835_fixup(struct phy_device *phydev) |
|
{ |
|
int buf; |
|
struct lan78xx_net *dev = netdev_priv(phydev->attached_dev); |
|
|
|
/* LED2/PME_N/IRQ_N/RGMII_ID pin to IRQ_N mode */ |
|
buf = phy_read_mmd(phydev, MDIO_MMD_PCS, 0x8010); |
|
buf &= ~0x1800; |
|
buf |= 0x0800; |
|
phy_write_mmd(phydev, MDIO_MMD_PCS, 0x8010, buf); |
|
|
|
/* RGMII MAC TXC Delay Enable */ |
|
lan78xx_write_reg(dev, MAC_RGMII_ID, |
|
MAC_RGMII_ID_TXC_DELAY_EN_); |
|
|
|
/* RGMII TX DLL Tune Adjust */ |
|
lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00); |
|
|
|
dev->interface = PHY_INTERFACE_MODE_RGMII_TXID; |
|
|
|
return 1; |
|
} |
|
|
|
static int ksz9031rnx_fixup(struct phy_device *phydev) |
|
{ |
|
struct lan78xx_net *dev = netdev_priv(phydev->attached_dev); |
|
|
|
/* Micrel9301RNX PHY configuration */ |
|
/* RGMII Control Signal Pad Skew */ |
|
phy_write_mmd(phydev, MDIO_MMD_WIS, 4, 0x0077); |
|
/* RGMII RX Data Pad Skew */ |
|
phy_write_mmd(phydev, MDIO_MMD_WIS, 5, 0x7777); |
|
/* RGMII RX Clock Pad Skew */ |
|
phy_write_mmd(phydev, MDIO_MMD_WIS, 8, 0x1FF); |
|
|
|
dev->interface = PHY_INTERFACE_MODE_RGMII_RXID; |
|
|
|
return 1; |
|
} |
|
|
|
static struct phy_device *lan7801_phy_init(struct lan78xx_net *dev) |
|
{ |
|
u32 buf; |
|
int ret; |
|
struct fixed_phy_status fphy_status = { |
|
.link = 1, |
|
.speed = SPEED_1000, |
|
.duplex = DUPLEX_FULL, |
|
}; |
|
struct phy_device *phydev; |
|
|
|
phydev = phy_find_first(dev->mdiobus); |
|
if (!phydev) { |
|
netdev_dbg(dev->net, "PHY Not Found!! Registering Fixed PHY\n"); |
|
phydev = fixed_phy_register(PHY_POLL, &fphy_status, NULL); |
|
if (IS_ERR(phydev)) { |
|
netdev_err(dev->net, "No PHY/fixed_PHY found\n"); |
|
return NULL; |
|
} |
|
netdev_dbg(dev->net, "Registered FIXED PHY\n"); |
|
dev->interface = PHY_INTERFACE_MODE_RGMII; |
|
ret = lan78xx_write_reg(dev, MAC_RGMII_ID, |
|
MAC_RGMII_ID_TXC_DELAY_EN_); |
|
ret = lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00); |
|
ret = lan78xx_read_reg(dev, HW_CFG, &buf); |
|
buf |= HW_CFG_CLK125_EN_; |
|
buf |= HW_CFG_REFCLK25_EN_; |
|
ret = lan78xx_write_reg(dev, HW_CFG, buf); |
|
} else { |
|
if (!phydev->drv) { |
|
netdev_err(dev->net, "no PHY driver found\n"); |
|
return NULL; |
|
} |
|
dev->interface = PHY_INTERFACE_MODE_RGMII; |
|
/* external PHY fixup for KSZ9031RNX */ |
|
ret = phy_register_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0, |
|
ksz9031rnx_fixup); |
|
if (ret < 0) { |
|
netdev_err(dev->net, "Failed to register fixup for PHY_KSZ9031RNX\n"); |
|
return NULL; |
|
} |
|
/* external PHY fixup for LAN8835 */ |
|
ret = phy_register_fixup_for_uid(PHY_LAN8835, 0xfffffff0, |
|
lan8835_fixup); |
|
if (ret < 0) { |
|
netdev_err(dev->net, "Failed to register fixup for PHY_LAN8835\n"); |
|
return NULL; |
|
} |
|
/* add more external PHY fixup here if needed */ |
|
|
|
phydev->is_internal = false; |
|
} |
|
return phydev; |
|
} |
|
|
|
static int lan78xx_phy_init(struct lan78xx_net *dev) |
|
{ |
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(fc) = { 0, }; |
|
int ret; |
|
u32 mii_adv; |
|
struct phy_device *phydev; |
|
|
|
switch (dev->chipid) { |
|
case ID_REV_CHIP_ID_7801_: |
|
phydev = lan7801_phy_init(dev); |
|
if (!phydev) { |
|
netdev_err(dev->net, "lan7801: PHY Init Failed"); |
|
return -EIO; |
|
} |
|
break; |
|
|
|
case ID_REV_CHIP_ID_7800_: |
|
case ID_REV_CHIP_ID_7850_: |
|
phydev = phy_find_first(dev->mdiobus); |
|
if (!phydev) { |
|
netdev_err(dev->net, "no PHY found\n"); |
|
return -EIO; |
|
} |
|
phydev->is_internal = true; |
|
dev->interface = PHY_INTERFACE_MODE_GMII; |
|
break; |
|
|
|
default: |
|
netdev_err(dev->net, "Unknown CHIP ID found\n"); |
|
return -EIO; |
|
} |
|
|
|
/* if phyirq is not set, use polling mode in phylib */ |
|
if (dev->domain_data.phyirq > 0) |
|
phydev->irq = dev->domain_data.phyirq; |
|
else |
|
phydev->irq = 0; |
|
netdev_dbg(dev->net, "phydev->irq = %d\n", phydev->irq); |
|
|
|
/* set to AUTOMDIX */ |
|
phydev->mdix = ETH_TP_MDI_AUTO; |
|
|
|
ret = phy_connect_direct(dev->net, phydev, |
|
lan78xx_link_status_change, |
|
dev->interface); |
|
if (ret) { |
|
netdev_err(dev->net, "can't attach PHY to %s\n", |
|
dev->mdiobus->id); |
|
if (dev->chipid == ID_REV_CHIP_ID_7801_) { |
|
if (phy_is_pseudo_fixed_link(phydev)) { |
|
fixed_phy_unregister(phydev); |
|
} else { |
|
phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, |
|
0xfffffff0); |
|
phy_unregister_fixup_for_uid(PHY_LAN8835, |
|
0xfffffff0); |
|
} |
|
} |
|
return -EIO; |
|
} |
|
|
|
/* MAC doesn't support 1000T Half */ |
|
phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT); |
|
|
|
/* support both flow controls */ |
|
dev->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); |
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT, |
|
phydev->advertising); |
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, |
|
phydev->advertising); |
|
mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control); |
|
mii_adv_to_linkmode_adv_t(fc, mii_adv); |
|
linkmode_or(phydev->advertising, fc, phydev->advertising); |
|
|
|
if (of_property_read_bool(phydev->mdio.dev.of_node, |
|
"microchip,eee-enabled")) { |
|
struct ethtool_eee edata; |
|
memset(&edata, 0, sizeof(edata)); |
|
edata.cmd = ETHTOOL_SEEE; |
|
edata.advertised = ADVERTISED_1000baseT_Full | |
|
ADVERTISED_100baseT_Full; |
|
edata.eee_enabled = true; |
|
edata.tx_lpi_enabled = true; |
|
if (of_property_read_u32(dev->udev->dev.of_node, |
|
"microchip,tx-lpi-timer", |
|
&edata.tx_lpi_timer)) |
|
edata.tx_lpi_timer = 600; /* non-aggressive */ |
|
(void)lan78xx_set_eee(dev->net, &edata); |
|
} |
|
|
|
if (phydev->mdio.dev.of_node) { |
|
u32 reg; |
|
int len; |
|
|
|
len = of_property_count_elems_of_size(phydev->mdio.dev.of_node, |
|
"microchip,led-modes", |
|
sizeof(u32)); |
|
if (len >= 0) { |
|
/* Ensure the appropriate LEDs are enabled */ |
|
lan78xx_read_reg(dev, HW_CFG, ®); |
|
reg &= ~(HW_CFG_LED0_EN_ | |
|
HW_CFG_LED1_EN_ | |
|
HW_CFG_LED2_EN_ | |
|
HW_CFG_LED3_EN_); |
|
reg |= (len > 0) * HW_CFG_LED0_EN_ | |
|
(len > 1) * HW_CFG_LED1_EN_ | |
|
(len > 2) * HW_CFG_LED2_EN_ | |
|
(len > 3) * HW_CFG_LED3_EN_; |
|
lan78xx_write_reg(dev, HW_CFG, reg); |
|
} |
|
} |
|
|
|
genphy_config_aneg(phydev); |
|
|
|
dev->fc_autoneg = phydev->autoneg; |
|
|
|
return 0; |
|
} |
|
|
|
static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size) |
|
{ |
|
u32 buf; |
|
bool rxenabled; |
|
|
|
lan78xx_read_reg(dev, MAC_RX, &buf); |
|
|
|
rxenabled = ((buf & MAC_RX_RXEN_) != 0); |
|
|
|
if (rxenabled) { |
|
buf &= ~MAC_RX_RXEN_; |
|
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_); |
|
|
|
lan78xx_write_reg(dev, MAC_RX, buf); |
|
|
|
if (rxenabled) { |
|
buf |= MAC_RX_RXEN_; |
|
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; |
|
|
|
/* no second zero-length packet read wanted after mtu-sized packets */ |
|
if ((ll_mtu % dev->maxpacket) == 0) |
|
return -EDOM; |
|
|
|
lan78xx_set_rx_max_frame_length(dev, new_mtu + VLAN_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; |
|
} |
|
|
|
static 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; |
|
|
|
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; |
|
|
|
lan78xx_write_reg(dev, RX_ADDRL, addr_lo); |
|
lan78xx_write_reg(dev, RX_ADDRH, addr_hi); |
|
|
|
/* Added to support MAC address changes */ |
|
lan78xx_write_reg(dev, MAF_LO(0), addr_lo); |
|
lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_); |
|
|
|
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; |
|
|
|
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_STRIP_; |
|
else |
|
pdata->rfe_ctl &= ~RFE_CTL_VLAN_STRIP_; |
|
|
|
if (features & NETIF_F_HW_VLAN_CTAG_FILTER) |
|
pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_; |
|
else |
|
pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_; |
|
|
|
spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); |
|
|
|
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; |
|
u8 sig; |
|
bool has_eeprom; |
|
bool has_otp; |
|
|
|
has_eeprom = !lan78xx_read_eeprom(dev, 0, 0, NULL); |
|
has_otp = !lan78xx_read_otp(dev, 0, 0, NULL); |
|
|
|
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); |
|
|
|
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; |
|
dev->tx_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_; |
|
/* If no valid EEPROM and no valid OTP, enable the LEDs by default */ |
|
if (!has_eeprom && !has_otp) |
|
buf |= HW_CFG_LED0_EN_ | HW_CFG_LED1_EN_; |
|
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); |
|
/* LAN7801 only has RGMII mode */ |
|
if (dev->chipid == ID_REV_CHIP_ID_7801_) |
|
buf &= ~MAC_CR_GMII_EN_; |
|
|
|
if (dev->chipid == ID_REV_CHIP_ID_7800_) { |
|
ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig); |
|
if (!ret && sig != EEPROM_INDICATOR) { |
|
/* Implies there is no external eeprom. Set mac speed */ |
|
netdev_info(dev->net, "No External EEPROM. Setting MAC Speed\n"); |
|
buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_; |
|
} |
|
} |
|
/* If no valid EEPROM and no valid OTP, enable AUTO negotiation */ |
|
if (!has_eeprom && !has_otp) |
|
buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_; |
|
ret = lan78xx_write_reg(dev, MAC_CR, 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 + VLAN_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; |
|
|
|
set_bit(EVENT_STAT_UPDATE, &dev->flags); |
|
} |
|
|
|
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; |
|
|
|
phy_start(net->phydev); |
|
|
|
netif_dbg(dev, ifup, dev->net, "phy initialised successfully"); |
|
|
|
/* 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); |
|
} |
|
|
|
static 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); |
|
|
|
if (net->phydev) |
|
phy_stop(net->phydev); |
|
|
|
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 struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev, |
|
struct sk_buff *skb, gfp_t flags) |
|
{ |
|
u32 tx_cmd_a, tx_cmd_b; |
|
void *ptr; |
|
|
|
if (skb_cow_head(skb, TX_OVERHEAD)) { |
|
dev_kfree_skb_any(skb); |
|
return NULL; |
|
} |
|
|
|
if (skb_linearize(skb)) { |
|
dev_kfree_skb_any(skb); |
|
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_; |
|
} |
|
|
|
ptr = skb_push(skb, 8); |
|
put_unaligned_le32(tx_cmd_a, ptr); |
|
put_unaligned_le32(tx_cmd_b, ptr + 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 += entry->num_of_packet; |
|
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; |
|
} |
|
|
|
static 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; |
|
} |
|
|
|
static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf) |
|
{ |
|
struct lan78xx_priv *pdata = NULL; |
|
int ret; |
|
int i; |
|
|
|
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_SG; |
|
/* Use module parameter to control TCP segmentation offload as |
|
* it appears to cause issues. |
|
*/ |
|
if (enable_tso) |
|
dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6; |
|
} |
|
|
|
if (DEFAULT_VLAN_RX_OFFLOAD) |
|
dev->net->features |= NETIF_F_HW_VLAN_CTAG_RX; |
|
|
|
if (DEFAULT_VLAN_FILTER_ENABLE) |
|
dev->net->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
|
|
|
dev->net->hw_features = dev->net->features; |
|
|
|
ret = lan78xx_setup_irq_domain(dev); |
|
if (ret < 0) { |
|
netdev_warn(dev->net, |
|
"lan78xx_setup_irq_domain() failed : %d", ret); |
|
goto out1; |
|
} |
|
|
|
dev->net->hard_header_len += TX_OVERHEAD; |
|
dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; |
|
|
|
/* Init all registers */ |
|
ret = lan78xx_reset(dev); |
|
if (ret) { |
|
netdev_warn(dev->net, "Registers INIT FAILED...."); |
|
goto out2; |
|
} |
|
|
|
ret = lan78xx_mdio_init(dev); |
|
if (ret) { |
|
netdev_warn(dev->net, "MDIO INIT FAILED....."); |
|
goto out2; |
|
} |
|
|
|
dev->net->flags |= IFF_MULTICAST; |
|
|
|
pdata->wol = WAKE_MAGIC; |
|
|
|
return ret; |
|
|
|
out2: |
|
lan78xx_remove_irq_domain(dev); |
|
|
|
out1: |
|
netdev_warn(dev->net, "Bind routine FAILED"); |
|
cancel_work_sync(&pdata->set_multicast); |
|
cancel_work_sync(&pdata->set_vlan); |
|
kfree(pdata); |
|
return ret; |
|
} |
|
|
|
static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf) |
|
{ |
|
struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); |
|
|
|
lan78xx_remove_irq_domain(dev); |
|
|
|
lan78xx_remove_mdio(dev); |
|
|
|
if (pdata) { |
|
cancel_work_sync(&pdata->set_multicast); |
|
cancel_work_sync(&pdata->set_vlan); |
|
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) |
|
{ |
|
/* HW Checksum offload appears to be flawed if used when not stripping |
|
* VLAN headers. Drop back to S/W checksums under these conditions. |
|
*/ |
|
if (!(dev->net->features & NETIF_F_RXCSUM) || |
|
unlikely(rx_cmd_a & RX_CMD_A_ICSM_) || |
|
((rx_cmd_a & RX_CMD_A_FVTG_) && |
|
!(dev->net->features & NETIF_F_HW_VLAN_CTAG_RX))) { |
|
skb->ip_summed = CHECKSUM_NONE; |
|
} else { |
|
skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT_)); |
|
skb->ip_summed = CHECKSUM_COMPLETE; |
|
} |
|
} |
|
|
|
static void lan78xx_rx_vlan_offload(struct lan78xx_net *dev, |
|
struct sk_buff *skb, |
|
u32 rx_cmd_a, u32 rx_cmd_b) |
|
{ |
|
if ((dev->net->features & NETIF_F_HW_VLAN_CTAG_RX) && |
|
(rx_cmd_a & RX_CMD_A_FVTG_)) |
|
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), |
|
(rx_cmd_b & 0xffff)); |
|
} |
|
|
|
static 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; |
|
} |
|
|
|
dev->net->stats.rx_packets++; |
|
dev->net->stats.rx_bytes += skb->len; |
|
|
|
skb->protocol = eth_type_trans(skb, dev->net); |
|
|
|
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; |
|
|
|
rx_cmd_a = get_unaligned_le32(skb->data); |
|
skb_pull(skb, sizeof(rx_cmd_a)); |
|
|
|
rx_cmd_b = get_unaligned_le32(skb->data); |
|
skb_pull(skb, sizeof(rx_cmd_b)); |
|
|
|
rx_cmd_c = get_unaligned_le16(skb->data); |
|
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); |
|
lan78xx_rx_vlan_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); |
|
lan78xx_rx_vlan_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(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; |
|
count = 0; |
|
length = 0; |
|
spin_lock_irqsave(&tqp->lock, flags); |
|
skb_queue_walk(tqp, skb) { |
|
if (skb_is_gso(skb)) { |
|
if (!skb_queue_is_first(tqp, skb)) { |
|
/* handle previous packets first */ |
|
break; |
|
} |
|
count = 1; |
|
length = skb->len - TX_OVERHEAD; |
|
__skb_unlink(skb, tqp); |
|
spin_unlock_irqrestore(&tqp->lock, flags); |
|
goto gso_skb; |
|
} |
|
|
|
if ((skb_totallen + skb->len) > MAX_SINGLE_PACKET_SIZE) |
|
break; |
|
skb_totallen = skb->len + roundup(skb_totallen, sizeof(u32)); |
|
pkt_cnt++; |
|
} |
|
spin_unlock_irqrestore(&tqp->lock, flags); |
|
|
|
/* 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) { |
|
length += (skb2->len - TX_OVERHEAD); |
|
memcpy(skb->data + pos, skb2->data, skb2->len); |
|
pos += roundup(skb2->len, sizeof(u32)); |
|
dev_kfree_skb(skb2); |
|
} |
|
} |
|
|
|
gso_skb: |
|
urb = usb_alloc_urb(0, GFP_ATOMIC); |
|
if (!urb) |
|
goto drop; |
|
|
|
entry = (struct skb_data *)skb->cb; |
|
entry->urb = urb; |
|
entry->dev = dev; |
|
entry->length = length; |
|
entry->num_of_packet = count; |
|
|
|
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: |
|
netif_trans_update(dev->net); |
|
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(struct tasklet_struct *t) |
|
{ |
|
struct lan78xx_net *dev = from_tasklet(dev, t, bh); |
|
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; |
|
struct phy_device *phydev; |
|
|
|
dev = usb_get_intfdata(intf); |
|
usb_set_intfdata(intf, NULL); |
|
if (!dev) |
|
return; |
|
|
|
udev = interface_to_usbdev(intf); |
|
net = dev->net; |
|
phydev = net->phydev; |
|
|
|
phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0); |
|
phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0); |
|
|
|
phy_disconnect(net->phydev); |
|
|
|
if (phy_is_pseudo_fixed_link(phydev)) |
|
fixed_phy_unregister(phydev); |
|
|
|
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); |
|
} |
|
|
|
static void lan78xx_tx_timeout(struct net_device *net, unsigned int txqueue) |
|
{ |
|
struct lan78xx_net *dev = netdev_priv(net); |
|
|
|
unlink_urbs(dev, &dev->txq); |
|
tasklet_schedule(&dev->bh); |
|
} |
|
|
|
static netdev_features_t lan78xx_features_check(struct sk_buff *skb, |
|
struct net_device *netdev, |
|
netdev_features_t features) |
|
{ |
|
if (skb->len + TX_OVERHEAD > MAX_SINGLE_PACKET_SIZE) |
|
features &= ~NETIF_F_GSO_MASK; |
|
|
|
features = vlan_features_check(skb, features); |
|
features = vxlan_features_check(skb, features); |
|
|
|
return features; |
|
} |
|
|
|
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 = phy_do_ioctl_running, |
|
.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, |
|
.ndo_features_check = lan78xx_features_check, |
|
}; |
|
|
|
static void lan78xx_stat_monitor(struct timer_list *t) |
|
{ |
|
struct lan78xx_net *dev = from_timer(dev, t, stat_monitor); |
|
|
|
lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE); |
|
} |
|
|
|
static int lan78xx_probe(struct usb_interface *intf, |
|
const struct usb_device_id *id) |
|
{ |
|
struct usb_host_endpoint *ep_blkin, *ep_blkout, *ep_intr; |
|
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); |
|
|
|
netdev = alloc_etherdev(sizeof(struct lan78xx_net)); |
|
if (!netdev) { |
|
dev_err(&intf->dev, "Error: OOM\n"); |
|
ret = -ENOMEM; |
|
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_setup(&dev->bh, lan78xx_bh); |
|
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->delta = 1; |
|
timer_setup(&dev->stat_monitor, lan78xx_stat_monitor, 0); |
|
|
|
mutex_init(&dev->stats.access_lock); |
|
|
|
if (intf->cur_altsetting->desc.bNumEndpoints < 3) { |
|
ret = -ENODEV; |
|
goto out2; |
|
} |
|
|
|
dev->pipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE); |
|
ep_blkin = usb_pipe_endpoint(udev, dev->pipe_in); |
|
if (!ep_blkin || !usb_endpoint_is_bulk_in(&ep_blkin->desc)) { |
|
ret = -ENODEV; |
|
goto out2; |
|
} |
|
|
|
dev->pipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE); |
|
ep_blkout = usb_pipe_endpoint(udev, dev->pipe_out); |
|
if (!ep_blkout || !usb_endpoint_is_bulk_out(&ep_blkout->desc)) { |
|
ret = -ENODEV; |
|
goto out2; |
|
} |
|
|
|
ep_intr = &intf->cur_altsetting->endpoint[2]; |
|
if (!usb_endpoint_is_int_in(&ep_intr->desc)) { |
|
ret = -ENODEV; |
|
goto out2; |
|
} |
|
|
|
dev->pipe_intr = usb_rcvintpipe(dev->udev, |
|
usb_endpoint_num(&ep_intr->desc)); |
|
|
|
ret = lan78xx_bind(dev, intf); |
|
if (ret < 0) |
|
goto out2; |
|
|
|
if (netdev->mtu > (dev->hard_mtu - netdev->hard_header_len)) |
|
netdev->mtu = dev->hard_mtu - netdev->hard_header_len; |
|
|
|
/* MTU range: 68 - 9000 */ |
|
netdev->max_mtu = MAX_SINGLE_PACKET_SIZE; |
|
netif_set_gso_max_size(netdev, MAX_SINGLE_PACKET_SIZE - MAX_HEADER); |
|
|
|
if (int_urb_interval_ms <= 0) |
|
period = ep_intr->desc.bInterval; |
|
else |
|
period = int_urb_interval_ms * INT_URB_MICROFRAMES_PER_MS; |
|
|
|
netif_notice(dev, probe, netdev, "int urb period %d\n", period); |
|
|
|
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) { |
|
ret = -ENOMEM; |
|
kfree(buf); |
|
goto out3; |
|
} else { |
|
usb_fill_int_urb(dev->urb_intr, dev->udev, |
|
dev->pipe_intr, buf, maxp, |
|
intr_complete, dev, period); |
|
dev->urb_intr->transfer_flags |= URB_FREE_BUFFER; |
|
} |
|
} |
|
|
|
dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1); |
|
|
|
/* driver requires remote-wakeup capability during autosuspend. */ |
|
intf->needs_remote_wakeup = 1; |
|
|
|
ret = lan78xx_phy_init(dev); |
|
if (ret < 0) |
|
goto out4; |
|
|
|
ret = register_netdev(netdev); |
|
if (ret != 0) { |
|
netif_err(dev, probe, netdev, "couldn't register the device\n"); |
|
goto out5; |
|
} |
|
|
|
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; |
|
|
|
out5: |
|
phy_disconnect(netdev->phydev); |
|
out4: |
|
usb_free_urb(dev->urb_intr); |
|
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 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 }; |
|
|
|
lan78xx_read_reg(dev, MAC_TX, &buf); |
|
buf &= ~MAC_TX_TXEN_; |
|
lan78xx_write_reg(dev, MAC_TX, buf); |
|
lan78xx_read_reg(dev, MAC_RX, &buf); |
|
buf &= ~MAC_RX_RXEN_; |
|
lan78xx_write_reg(dev, MAC_RX, buf); |
|
|
|
lan78xx_write_reg(dev, WUCSR, 0); |
|
lan78xx_write_reg(dev, WUCSR2, 0); |
|
lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); |
|
|
|
temp_wucsr = 0; |
|
|
|
temp_pmt_ctl = 0; |
|
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++) |
|
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); |
|
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_)); |
|
|
|
lan78xx_write_reg(dev, WUF_MASK0(mask_index), 7); |
|
lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); |
|
lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); |
|
lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); |
|
mask_index++; |
|
|
|
/* for IPv6 Multicast */ |
|
crc = lan78xx_wakeframe_crc16(ipv6_multicast, 2); |
|
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_)); |
|
|
|
lan78xx_write_reg(dev, WUF_MASK0(mask_index), 3); |
|
lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); |
|
lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); |
|
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); |
|
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_)); |
|
|
|
lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000); |
|
lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); |
|
lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); |
|
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_; |
|
} |
|
|
|
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_; |
|
} |
|
lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl); |
|
|
|
/* clear WUPS */ |
|
lan78xx_read_reg(dev, PMT_CTL, &buf); |
|
buf |= PMT_CTL_WUPS_MASK_; |
|
lan78xx_write_reg(dev, PMT_CTL, buf); |
|
|
|
lan78xx_read_reg(dev, MAC_RX, &buf); |
|
buf |= MAC_RX_RXEN_; |
|
lan78xx_write_reg(dev, MAC_RX, buf); |
|
|
|
return 0; |
|
} |
|
|
|
static 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; |
|
|
|
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; |
|
} |
|
|
|
static 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 { |
|
netif_trans_update(dev->net); |
|
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; |
|
} |
|
|
|
static int lan78xx_reset_resume(struct usb_interface *intf) |
|
{ |
|
struct lan78xx_net *dev = usb_get_intfdata(intf); |
|
|
|
lan78xx_reset(dev); |
|
|
|
phy_start(dev->net->phydev); |
|
|
|
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), |
|
}, |
|
{ |
|
/* LAN7801 USB Gigabit Ethernet Device */ |
|
USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7801_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");
|
|
|