| // SPDX-License-Identifier: GPL-2.0-or-later |
| /*************************************************************************** |
| * |
| * Copyright (C) 2007-2008 SMSC |
| * |
| *****************************************************************************/ |
| |
| #include <linux/module.h> |
| #include <linux/kmod.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/ethtool.h> |
| #include <linux/mii.h> |
| #include <linux/usb.h> |
| #include <linux/bitrev.h> |
| #include <linux/crc16.h> |
| #include <linux/crc32.h> |
| #include <linux/usb/usbnet.h> |
| #include <linux/slab.h> |
| #include <linux/of_net.h> |
| #include <linux/mdio.h> |
| #include <linux/phy.h> |
| #include "smsc95xx.h" |
| |
| #define SMSC_CHIPNAME "smsc95xx" |
| #define SMSC_DRIVER_VERSION "2.0.0" |
| #define HS_USB_PKT_SIZE (512) |
| #define FS_USB_PKT_SIZE (64) |
| #define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE) |
| #define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE) |
| #define DEFAULT_BULK_IN_DELAY (0x00002000) |
| #define MAX_SINGLE_PACKET_SIZE (2048) |
| #define LAN95XX_EEPROM_MAGIC (0x9500) |
| #define EEPROM_MAC_OFFSET (0x01) |
| #define DEFAULT_TX_CSUM_ENABLE (true) |
| #define DEFAULT_RX_CSUM_ENABLE (true) |
| #define SMSC95XX_INTERNAL_PHY_ID (1) |
| #define SMSC95XX_TX_OVERHEAD (8) |
| #define SMSC95XX_TX_OVERHEAD_CSUM (12) |
| #define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \ |
| WAKE_MCAST | WAKE_ARP | WAKE_MAGIC) |
| |
| #define FEATURE_8_WAKEUP_FILTERS (0x01) |
| #define FEATURE_PHY_NLP_CROSSOVER (0x02) |
| #define FEATURE_REMOTE_WAKEUP (0x04) |
| |
| #define SUSPEND_SUSPEND0 (0x01) |
| #define SUSPEND_SUSPEND1 (0x02) |
| #define SUSPEND_SUSPEND2 (0x04) |
| #define SUSPEND_SUSPEND3 (0x08) |
| #define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \ |
| SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3) |
| |
| struct smsc95xx_priv { |
| u32 mac_cr; |
| u32 hash_hi; |
| u32 hash_lo; |
| u32 wolopts; |
| spinlock_t mac_cr_lock; |
| u8 features; |
| u8 suspend_flags; |
| struct mii_bus *mdiobus; |
| struct phy_device *phydev; |
| }; |
| |
| static bool turbo_mode = true; |
| module_param(turbo_mode, bool, 0644); |
| MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction"); |
| |
| static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index, |
| u32 *data, int in_pm) |
| { |
| u32 buf; |
| int ret; |
| int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); |
| |
| BUG_ON(!dev); |
| |
| if (!in_pm) |
| fn = usbnet_read_cmd; |
| else |
| fn = usbnet_read_cmd_nopm; |
| |
| ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN |
| | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 0, index, &buf, 4); |
| if (ret < 4) { |
| ret = ret < 0 ? ret : -ENODATA; |
| |
| if (ret != -ENODEV) |
| netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n", |
| index, ret); |
| return ret; |
| } |
| |
| le32_to_cpus(&buf); |
| *data = buf; |
| |
| return ret; |
| } |
| |
| static int __must_check __smsc95xx_write_reg(struct usbnet *dev, u32 index, |
| u32 data, int in_pm) |
| { |
| u32 buf; |
| int ret; |
| int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); |
| |
| BUG_ON(!dev); |
| |
| if (!in_pm) |
| fn = usbnet_write_cmd; |
| else |
| fn = usbnet_write_cmd_nopm; |
| |
| buf = data; |
| cpu_to_le32s(&buf); |
| |
| ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT |
| | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 0, index, &buf, 4); |
| if (ret < 0 && ret != -ENODEV) |
| netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n", |
| index, ret); |
| |
| return ret; |
| } |
| |
| static int __must_check smsc95xx_read_reg_nopm(struct usbnet *dev, u32 index, |
| u32 *data) |
| { |
| return __smsc95xx_read_reg(dev, index, data, 1); |
| } |
| |
| static int __must_check smsc95xx_write_reg_nopm(struct usbnet *dev, u32 index, |
| u32 data) |
| { |
| return __smsc95xx_write_reg(dev, index, data, 1); |
| } |
| |
| static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index, |
| u32 *data) |
| { |
| return __smsc95xx_read_reg(dev, index, data, 0); |
| } |
| |
| static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index, |
| u32 data) |
| { |
| return __smsc95xx_write_reg(dev, index, data, 0); |
| } |
| |
| /* Loop until the read is completed with timeout |
| * called with phy_mutex held */ |
| static int __must_check __smsc95xx_phy_wait_not_busy(struct usbnet *dev, |
| int in_pm) |
| { |
| unsigned long start_time = jiffies; |
| u32 val; |
| int ret; |
| |
| do { |
| ret = __smsc95xx_read_reg(dev, MII_ADDR, &val, in_pm); |
| if (ret < 0) { |
| /* Ignore -ENODEV error during disconnect() */ |
| if (ret == -ENODEV) |
| return 0; |
| netdev_warn(dev->net, "Error reading MII_ACCESS\n"); |
| return ret; |
| } |
| |
| if (!(val & MII_BUSY_)) |
| return 0; |
| } while (!time_after(jiffies, start_time + HZ)); |
| |
| return -EIO; |
| } |
| |
| static u32 mii_address_cmd(int phy_id, int idx, u16 op) |
| { |
| return (phy_id & 0x1f) << 11 | (idx & 0x1f) << 6 | op; |
| } |
| |
| static int __smsc95xx_mdio_read(struct usbnet *dev, int phy_id, int idx, |
| int in_pm) |
| { |
| u32 val, addr; |
| int ret; |
| |
| mutex_lock(&dev->phy_mutex); |
| |
| /* confirm MII not busy */ |
| ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); |
| if (ret < 0) { |
| netdev_warn(dev->net, "%s: MII is busy\n", __func__); |
| goto done; |
| } |
| |
| /* set the address, index & direction (read from PHY) */ |
| addr = mii_address_cmd(phy_id, idx, MII_READ_ | MII_BUSY_); |
| ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm); |
| if (ret < 0) { |
| if (ret != -ENODEV) |
| netdev_warn(dev->net, "Error writing MII_ADDR\n"); |
| goto done; |
| } |
| |
| ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx); |
| goto done; |
| } |
| |
| ret = __smsc95xx_read_reg(dev, MII_DATA, &val, in_pm); |
| if (ret < 0) { |
| if (ret != -ENODEV) |
| netdev_warn(dev->net, "Error reading MII_DATA\n"); |
| goto done; |
| } |
| |
| ret = (u16)(val & 0xFFFF); |
| |
| done: |
| mutex_unlock(&dev->phy_mutex); |
| |
| /* Ignore -ENODEV error during disconnect() */ |
| if (ret == -ENODEV) |
| return 0; |
| return ret; |
| } |
| |
| static void __smsc95xx_mdio_write(struct usbnet *dev, int phy_id, |
| int idx, int regval, int in_pm) |
| { |
| u32 val, addr; |
| int ret; |
| |
| mutex_lock(&dev->phy_mutex); |
| |
| /* confirm MII not busy */ |
| ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); |
| if (ret < 0) { |
| netdev_warn(dev->net, "%s: MII is busy\n", __func__); |
| goto done; |
| } |
| |
| val = regval; |
| ret = __smsc95xx_write_reg(dev, MII_DATA, val, in_pm); |
| if (ret < 0) { |
| if (ret != -ENODEV) |
| netdev_warn(dev->net, "Error writing MII_DATA\n"); |
| goto done; |
| } |
| |
| /* set the address, index & direction (write to PHY) */ |
| addr = mii_address_cmd(phy_id, idx, MII_WRITE_ | MII_BUSY_); |
| ret = __smsc95xx_write_reg(dev, MII_ADDR, addr, in_pm); |
| if (ret < 0) { |
| if (ret != -ENODEV) |
| netdev_warn(dev->net, "Error writing MII_ADDR\n"); |
| goto done; |
| } |
| |
| ret = __smsc95xx_phy_wait_not_busy(dev, in_pm); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx); |
| goto done; |
| } |
| |
| done: |
| mutex_unlock(&dev->phy_mutex); |
| } |
| |
| static int smsc95xx_mdio_read_nopm(struct usbnet *dev, int idx) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| |
| return __smsc95xx_mdio_read(dev, pdata->phydev->mdio.addr, idx, 1); |
| } |
| |
| static void smsc95xx_mdio_write_nopm(struct usbnet *dev, int idx, int regval) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| |
| __smsc95xx_mdio_write(dev, pdata->phydev->mdio.addr, idx, regval, 1); |
| } |
| |
| static int smsc95xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx) |
| { |
| struct usbnet *dev = bus->priv; |
| |
| return __smsc95xx_mdio_read(dev, phy_id, idx, 0); |
| } |
| |
| static int smsc95xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx, |
| u16 regval) |
| { |
| struct usbnet *dev = bus->priv; |
| |
| __smsc95xx_mdio_write(dev, phy_id, idx, regval, 0); |
| return 0; |
| } |
| |
| static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev) |
| { |
| unsigned long start_time = jiffies; |
| u32 val; |
| int ret; |
| |
| do { |
| ret = smsc95xx_read_reg(dev, E2P_CMD, &val); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Error reading E2P_CMD\n"); |
| return ret; |
| } |
| |
| if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_)) |
| break; |
| udelay(40); |
| } while (!time_after(jiffies, start_time + HZ)); |
| |
| if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) { |
| netdev_warn(dev->net, "EEPROM read operation timeout\n"); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev) |
| { |
| unsigned long start_time = jiffies; |
| u32 val; |
| int ret; |
| |
| do { |
| ret = smsc95xx_read_reg(dev, E2P_CMD, &val); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Error reading E2P_CMD\n"); |
| return ret; |
| } |
| |
| if (!(val & E2P_CMD_BUSY_)) |
| return 0; |
| |
| udelay(40); |
| } while (!time_after(jiffies, start_time + HZ)); |
| |
| netdev_warn(dev->net, "EEPROM is busy\n"); |
| return -EIO; |
| } |
| |
| static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length, |
| u8 *data) |
| { |
| u32 val; |
| int i, ret; |
| |
| BUG_ON(!dev); |
| BUG_ON(!data); |
| |
| ret = smsc95xx_eeprom_confirm_not_busy(dev); |
| if (ret) |
| return ret; |
| |
| for (i = 0; i < length; i++) { |
| val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_); |
| ret = smsc95xx_write_reg(dev, E2P_CMD, val); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Error writing E2P_CMD\n"); |
| return ret; |
| } |
| |
| ret = smsc95xx_wait_eeprom(dev); |
| if (ret < 0) |
| return ret; |
| |
| ret = smsc95xx_read_reg(dev, E2P_DATA, &val); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Error reading E2P_DATA\n"); |
| return ret; |
| } |
| |
| data[i] = val & 0xFF; |
| offset++; |
| } |
| |
| return 0; |
| } |
| |
| static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length, |
| u8 *data) |
| { |
| u32 val; |
| int i, ret; |
| |
| BUG_ON(!dev); |
| BUG_ON(!data); |
| |
| ret = smsc95xx_eeprom_confirm_not_busy(dev); |
| if (ret) |
| return ret; |
| |
| /* Issue write/erase enable command */ |
| val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_; |
| ret = smsc95xx_write_reg(dev, E2P_CMD, val); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Error writing E2P_DATA\n"); |
| return ret; |
| } |
| |
| ret = smsc95xx_wait_eeprom(dev); |
| if (ret < 0) |
| return ret; |
| |
| for (i = 0; i < length; i++) { |
| |
| /* Fill data register */ |
| val = data[i]; |
| ret = smsc95xx_write_reg(dev, E2P_DATA, val); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Error writing E2P_DATA\n"); |
| return ret; |
| } |
| |
| /* Send "write" command */ |
| val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_); |
| ret = smsc95xx_write_reg(dev, E2P_CMD, val); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Error writing E2P_CMD\n"); |
| return ret; |
| } |
| |
| ret = smsc95xx_wait_eeprom(dev); |
| if (ret < 0) |
| return ret; |
| |
| offset++; |
| } |
| |
| return 0; |
| } |
| |
| static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index, |
| u32 data) |
| { |
| const u16 size = 4; |
| u32 buf; |
| int ret; |
| |
| buf = data; |
| cpu_to_le32s(&buf); |
| |
| ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, |
| USB_DIR_OUT | USB_TYPE_VENDOR | |
| USB_RECIP_DEVICE, |
| 0, index, &buf, size); |
| if (ret < 0) |
| netdev_warn(dev->net, "Error write async cmd, sts=%d\n", |
| ret); |
| return ret; |
| } |
| |
| /* returns hash bit number for given MAC address |
| * example: |
| * 01 00 5E 00 00 01 -> returns bit number 31 */ |
| static unsigned int smsc95xx_hash(char addr[ETH_ALEN]) |
| { |
| return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f; |
| } |
| |
| static void smsc95xx_set_multicast(struct net_device *netdev) |
| { |
| struct usbnet *dev = netdev_priv(netdev); |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| unsigned long flags; |
| int ret; |
| |
| pdata->hash_hi = 0; |
| pdata->hash_lo = 0; |
| |
| spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
| |
| if (dev->net->flags & IFF_PROMISC) { |
| netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n"); |
| pdata->mac_cr |= MAC_CR_PRMS_; |
| pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_); |
| } else if (dev->net->flags & IFF_ALLMULTI) { |
| netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n"); |
| pdata->mac_cr |= MAC_CR_MCPAS_; |
| pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_); |
| } else if (!netdev_mc_empty(dev->net)) { |
| struct netdev_hw_addr *ha; |
| |
| pdata->mac_cr |= MAC_CR_HPFILT_; |
| pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_); |
| |
| netdev_for_each_mc_addr(ha, netdev) { |
| u32 bitnum = smsc95xx_hash(ha->addr); |
| u32 mask = 0x01 << (bitnum & 0x1F); |
| if (bitnum & 0x20) |
| pdata->hash_hi |= mask; |
| else |
| pdata->hash_lo |= mask; |
| } |
| |
| netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n", |
| pdata->hash_hi, pdata->hash_lo); |
| } else { |
| netif_dbg(dev, drv, dev->net, "receive own packets only\n"); |
| pdata->mac_cr &= |
| ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_); |
| } |
| |
| spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); |
| |
| /* Initiate async writes, as we can't wait for completion here */ |
| ret = smsc95xx_write_reg_async(dev, HASHH, pdata->hash_hi); |
| if (ret < 0) |
| netdev_warn(dev->net, "failed to initiate async write to HASHH\n"); |
| |
| ret = smsc95xx_write_reg_async(dev, HASHL, pdata->hash_lo); |
| if (ret < 0) |
| netdev_warn(dev->net, "failed to initiate async write to HASHL\n"); |
| |
| ret = smsc95xx_write_reg_async(dev, MAC_CR, pdata->mac_cr); |
| if (ret < 0) |
| netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n"); |
| } |
| |
| static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev) |
| { |
| u32 flow = 0, afc_cfg; |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| bool tx_pause, rx_pause; |
| |
| int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg); |
| if (ret < 0) |
| return ret; |
| |
| if (pdata->phydev->duplex == DUPLEX_FULL) { |
| phy_get_pause(pdata->phydev, &tx_pause, &rx_pause); |
| |
| if (rx_pause) |
| flow = 0xFFFF0002; |
| |
| if (tx_pause) { |
| afc_cfg |= 0xF; |
| flow |= 0xFFFF0000; |
| } else { |
| afc_cfg &= ~0xF; |
| } |
| |
| netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n", |
| rx_pause ? "enabled" : "disabled", |
| tx_pause ? "enabled" : "disabled"); |
| } else { |
| netif_dbg(dev, link, dev->net, "half duplex\n"); |
| afc_cfg |= 0xF; |
| } |
| |
| ret = smsc95xx_write_reg(dev, FLOW, flow); |
| if (ret < 0) |
| return ret; |
| |
| return smsc95xx_write_reg(dev, AFC_CFG, afc_cfg); |
| } |
| |
| static void smsc95xx_mac_update_fullduplex(struct usbnet *dev) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| unsigned long flags; |
| int ret; |
| |
| spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
| if (pdata->phydev->duplex != DUPLEX_FULL) { |
| pdata->mac_cr &= ~MAC_CR_FDPX_; |
| pdata->mac_cr |= MAC_CR_RCVOWN_; |
| } else { |
| pdata->mac_cr &= ~MAC_CR_RCVOWN_; |
| pdata->mac_cr |= MAC_CR_FDPX_; |
| } |
| spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); |
| |
| ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); |
| if (ret < 0) { |
| if (ret != -ENODEV) |
| netdev_warn(dev->net, |
| "Error updating MAC full duplex mode\n"); |
| return; |
| } |
| |
| ret = smsc95xx_phy_update_flowcontrol(dev); |
| if (ret < 0) |
| netdev_warn(dev->net, "Error updating PHY flow control\n"); |
| } |
| |
| static void smsc95xx_status(struct usbnet *dev, struct urb *urb) |
| { |
| u32 intdata; |
| |
| if (urb->actual_length != 4) { |
| netdev_warn(dev->net, "unexpected urb length %d\n", |
| urb->actual_length); |
| return; |
| } |
| |
| intdata = get_unaligned_le32(urb->transfer_buffer); |
| netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata); |
| |
| if (intdata & INT_ENP_PHY_INT_) |
| ; |
| else |
| netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", |
| intdata); |
| } |
| |
| /* Enable or disable Tx & Rx checksum offload engines */ |
| static int smsc95xx_set_features(struct net_device *netdev, |
| netdev_features_t features) |
| { |
| struct usbnet *dev = netdev_priv(netdev); |
| u32 read_buf; |
| int ret; |
| |
| ret = smsc95xx_read_reg(dev, COE_CR, &read_buf); |
| if (ret < 0) |
| return ret; |
| |
| if (features & NETIF_F_IP_CSUM) |
| read_buf |= Tx_COE_EN_; |
| else |
| read_buf &= ~Tx_COE_EN_; |
| |
| if (features & NETIF_F_RXCSUM) |
| read_buf |= Rx_COE_EN_; |
| else |
| read_buf &= ~Rx_COE_EN_; |
| |
| ret = smsc95xx_write_reg(dev, COE_CR, read_buf); |
| if (ret < 0) |
| return ret; |
| |
| netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf); |
| return 0; |
| } |
| |
| static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net) |
| { |
| return MAX_EEPROM_SIZE; |
| } |
| |
| static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev, |
| struct ethtool_eeprom *ee, u8 *data) |
| { |
| struct usbnet *dev = netdev_priv(netdev); |
| |
| ee->magic = LAN95XX_EEPROM_MAGIC; |
| |
| return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data); |
| } |
| |
| static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev, |
| struct ethtool_eeprom *ee, u8 *data) |
| { |
| struct usbnet *dev = netdev_priv(netdev); |
| |
| if (ee->magic != LAN95XX_EEPROM_MAGIC) { |
| netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n", |
| ee->magic); |
| return -EINVAL; |
| } |
| |
| return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data); |
| } |
| |
| static int smsc95xx_ethtool_getregslen(struct net_device *netdev) |
| { |
| /* all smsc95xx registers */ |
| return COE_CR - ID_REV + sizeof(u32); |
| } |
| |
| static void |
| smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs, |
| void *buf) |
| { |
| struct usbnet *dev = netdev_priv(netdev); |
| unsigned int i, j; |
| int retval; |
| u32 *data = buf; |
| |
| retval = smsc95xx_read_reg(dev, ID_REV, ®s->version); |
| if (retval < 0) { |
| netdev_warn(netdev, "REGS: cannot read ID_REV\n"); |
| return; |
| } |
| |
| for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) { |
| retval = smsc95xx_read_reg(dev, i, &data[j]); |
| if (retval < 0) { |
| netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i); |
| return; |
| } |
| } |
| } |
| |
| static void smsc95xx_ethtool_get_wol(struct net_device *net, |
| struct ethtool_wolinfo *wolinfo) |
| { |
| struct usbnet *dev = netdev_priv(net); |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| |
| wolinfo->supported = SUPPORTED_WAKE; |
| wolinfo->wolopts = pdata->wolopts; |
| } |
| |
| static int smsc95xx_ethtool_set_wol(struct net_device *net, |
| struct ethtool_wolinfo *wolinfo) |
| { |
| struct usbnet *dev = netdev_priv(net); |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| int ret; |
| |
| if (wolinfo->wolopts & ~SUPPORTED_WAKE) |
| return -EINVAL; |
| |
| pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE; |
| |
| ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts); |
| if (ret < 0) |
| netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret); |
| |
| return ret; |
| } |
| |
| static u32 smsc95xx_get_link(struct net_device *net) |
| { |
| phy_read_status(net->phydev); |
| return net->phydev->link; |
| } |
| |
| static const struct ethtool_ops smsc95xx_ethtool_ops = { |
| .get_link = smsc95xx_get_link, |
| .nway_reset = phy_ethtool_nway_reset, |
| .get_drvinfo = usbnet_get_drvinfo, |
| .get_msglevel = usbnet_get_msglevel, |
| .set_msglevel = usbnet_set_msglevel, |
| .get_eeprom_len = smsc95xx_ethtool_get_eeprom_len, |
| .get_eeprom = smsc95xx_ethtool_get_eeprom, |
| .set_eeprom = smsc95xx_ethtool_set_eeprom, |
| .get_regs_len = smsc95xx_ethtool_getregslen, |
| .get_regs = smsc95xx_ethtool_getregs, |
| .get_wol = smsc95xx_ethtool_get_wol, |
| .set_wol = smsc95xx_ethtool_set_wol, |
| .get_link_ksettings = phy_ethtool_get_link_ksettings, |
| .set_link_ksettings = phy_ethtool_set_link_ksettings, |
| .get_ts_info = ethtool_op_get_ts_info, |
| }; |
| |
| static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) |
| { |
| if (!netif_running(netdev)) |
| return -EINVAL; |
| |
| return phy_mii_ioctl(netdev->phydev, rq, cmd); |
| } |
| |
| static void smsc95xx_init_mac_address(struct usbnet *dev) |
| { |
| /* maybe the boot loader passed the MAC address in devicetree */ |
| if (!eth_platform_get_mac_address(&dev->udev->dev, |
| dev->net->dev_addr)) { |
| if (is_valid_ether_addr(dev->net->dev_addr)) { |
| /* device tree values are valid so use them */ |
| netif_dbg(dev, ifup, dev->net, "MAC address read from the device tree\n"); |
| return; |
| } |
| } |
| |
| /* try reading mac address from EEPROM */ |
| if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, |
| dev->net->dev_addr) == 0) { |
| if (is_valid_ether_addr(dev->net->dev_addr)) { |
| /* eeprom values are valid so use them */ |
| netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n"); |
| return; |
| } |
| } |
| |
| /* no useful static MAC address found. generate a random one */ |
| eth_hw_addr_random(dev->net); |
| netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n"); |
| } |
| |
| static int smsc95xx_set_mac_address(struct usbnet *dev) |
| { |
| u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 | |
| dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24; |
| u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8; |
| int ret; |
| |
| ret = smsc95xx_write_reg(dev, ADDRL, addr_lo); |
| if (ret < 0) |
| return ret; |
| |
| return smsc95xx_write_reg(dev, ADDRH, addr_hi); |
| } |
| |
| /* starts the TX path */ |
| static int smsc95xx_start_tx_path(struct usbnet *dev) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| unsigned long flags; |
| int ret; |
| |
| /* Enable Tx at MAC */ |
| spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
| pdata->mac_cr |= MAC_CR_TXEN_; |
| spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); |
| |
| ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr); |
| if (ret < 0) |
| return ret; |
| |
| /* Enable Tx at SCSRs */ |
| return smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_); |
| } |
| |
| /* Starts the Receive path */ |
| static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&pdata->mac_cr_lock, flags); |
| pdata->mac_cr |= MAC_CR_RXEN_; |
| spin_unlock_irqrestore(&pdata->mac_cr_lock, flags); |
| |
| return __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm); |
| } |
| |
| static int smsc95xx_reset(struct usbnet *dev) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| u32 read_buf, write_buf, burst_cap; |
| int ret = 0, timeout; |
| |
| netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n"); |
| |
| ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_); |
| if (ret < 0) |
| return ret; |
| |
| timeout = 0; |
| do { |
| msleep(10); |
| ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| if (ret < 0) |
| return ret; |
| timeout++; |
| } while ((read_buf & HW_CFG_LRST_) && (timeout < 100)); |
| |
| if (timeout >= 100) { |
| netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n"); |
| return -ETIMEDOUT; |
| } |
| |
| ret = smsc95xx_write_reg(dev, PM_CTRL, PM_CTL_PHY_RST_); |
| if (ret < 0) |
| return ret; |
| |
| timeout = 0; |
| do { |
| msleep(10); |
| ret = smsc95xx_read_reg(dev, PM_CTRL, &read_buf); |
| if (ret < 0) |
| return ret; |
| timeout++; |
| } while ((read_buf & PM_CTL_PHY_RST_) && (timeout < 100)); |
| |
| if (timeout >= 100) { |
| netdev_warn(dev->net, "timeout waiting for PHY Reset\n"); |
| return ret; |
| } |
| |
| ret = smsc95xx_set_mac_address(dev); |
| if (ret < 0) |
| return ret; |
| |
| netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n", |
| dev->net->dev_addr); |
| |
| ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| if (ret < 0) |
| return ret; |
| |
| netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n", |
| read_buf); |
| |
| read_buf |= HW_CFG_BIR_; |
| |
| ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); |
| if (ret < 0) |
| return ret; |
| |
| ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| if (ret < 0) |
| return ret; |
| |
| netif_dbg(dev, ifup, dev->net, |
| "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n", |
| read_buf); |
| |
| if (!turbo_mode) { |
| burst_cap = 0; |
| dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE; |
| } else if (dev->udev->speed == USB_SPEED_HIGH) { |
| burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE; |
| dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE; |
| } else { |
| burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE; |
| dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE; |
| } |
| |
| netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n", |
| (ulong)dev->rx_urb_size); |
| |
| ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap); |
| if (ret < 0) |
| return ret; |
| |
| ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf); |
| if (ret < 0) |
| return ret; |
| |
| netif_dbg(dev, ifup, dev->net, |
| "Read Value from BURST_CAP after writing: 0x%08x\n", |
| read_buf); |
| |
| ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); |
| if (ret < 0) |
| return ret; |
| |
| ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf); |
| if (ret < 0) |
| return ret; |
| |
| netif_dbg(dev, ifup, dev->net, |
| "Read Value from BULK_IN_DLY after writing: 0x%08x\n", |
| read_buf); |
| |
| ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| if (ret < 0) |
| return ret; |
| |
| netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n", |
| read_buf); |
| |
| if (turbo_mode) |
| read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_); |
| |
| read_buf &= ~HW_CFG_RXDOFF_; |
| |
| /* set Rx data offset=2, Make IP header aligns on word boundary. */ |
| read_buf |= NET_IP_ALIGN << 9; |
| |
| ret = smsc95xx_write_reg(dev, HW_CFG, read_buf); |
| if (ret < 0) |
| return ret; |
| |
| ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf); |
| if (ret < 0) |
| return ret; |
| |
| netif_dbg(dev, ifup, dev->net, |
| "Read Value from HW_CFG after writing: 0x%08x\n", read_buf); |
| |
| ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); |
| if (ret < 0) |
| return ret; |
| |
| ret = smsc95xx_read_reg(dev, ID_REV, &read_buf); |
| if (ret < 0) |
| return ret; |
| netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf); |
| |
| /* Configure GPIO pins as LED outputs */ |
| write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED | |
| LED_GPIO_CFG_FDX_LED; |
| ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf); |
| if (ret < 0) |
| return ret; |
| |
| /* Init Tx */ |
| ret = smsc95xx_write_reg(dev, FLOW, 0); |
| if (ret < 0) |
| return ret; |
| |
| ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT); |
| if (ret < 0) |
| return ret; |
| |
| /* Don't need mac_cr_lock during initialisation */ |
| ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr); |
| if (ret < 0) |
| return ret; |
| |
| /* Init Rx */ |
| /* Set Vlan */ |
| ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q); |
| if (ret < 0) |
| return ret; |
| |
| /* Enable or disable checksum offload engines */ |
| ret = smsc95xx_set_features(dev->net, dev->net->features); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Failed to set checksum offload features\n"); |
| return ret; |
| } |
| |
| smsc95xx_set_multicast(dev->net); |
| |
| ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf); |
| if (ret < 0) |
| return ret; |
| |
| /* enable PHY interrupts */ |
| read_buf |= INT_EP_CTL_PHY_INT_; |
| |
| ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf); |
| if (ret < 0) |
| return ret; |
| |
| ret = smsc95xx_start_tx_path(dev); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Failed to start TX path\n"); |
| return ret; |
| } |
| |
| ret = smsc95xx_start_rx_path(dev, 0); |
| if (ret < 0) { |
| netdev_warn(dev->net, "Failed to start RX path\n"); |
| return ret; |
| } |
| |
| netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n"); |
| return 0; |
| } |
| |
| static const struct net_device_ops smsc95xx_netdev_ops = { |
| .ndo_open = usbnet_open, |
| .ndo_stop = usbnet_stop, |
| .ndo_start_xmit = usbnet_start_xmit, |
| .ndo_tx_timeout = usbnet_tx_timeout, |
| .ndo_change_mtu = usbnet_change_mtu, |
| .ndo_get_stats64 = dev_get_tstats64, |
| .ndo_set_mac_address = eth_mac_addr, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_eth_ioctl = smsc95xx_ioctl, |
| .ndo_set_rx_mode = smsc95xx_set_multicast, |
| .ndo_set_features = smsc95xx_set_features, |
| }; |
| |
| static void smsc95xx_handle_link_change(struct net_device *net) |
| { |
| struct usbnet *dev = netdev_priv(net); |
| |
| phy_print_status(net->phydev); |
| smsc95xx_mac_update_fullduplex(dev); |
| usbnet_defer_kevent(dev, EVENT_LINK_CHANGE); |
| } |
| |
| static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) |
| { |
| struct smsc95xx_priv *pdata; |
| bool is_internal_phy; |
| u32 val; |
| int ret; |
| |
| printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n"); |
| |
| ret = usbnet_get_endpoints(dev, intf); |
| if (ret < 0) { |
| netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret); |
| return ret; |
| } |
| |
| pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); |
| if (!pdata) |
| return -ENOMEM; |
| |
| dev->driver_priv = pdata; |
| |
| spin_lock_init(&pdata->mac_cr_lock); |
| |
| /* LAN95xx devices do not alter the computed checksum of 0 to 0xffff. |
| * RFC 2460, ipv6 UDP calculated checksum yields a result of zero must |
| * be changed to 0xffff. RFC 768, ipv4 UDP computed checksum is zero, |
| * it is transmitted as all ones. The zero transmitted checksum means |
| * transmitter generated no checksum. Hence, enable csum offload only |
| * for ipv4 packets. |
| */ |
| if (DEFAULT_TX_CSUM_ENABLE) |
| dev->net->features |= NETIF_F_IP_CSUM; |
| if (DEFAULT_RX_CSUM_ENABLE) |
| dev->net->features |= NETIF_F_RXCSUM; |
| |
| dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM; |
| set_bit(EVENT_NO_IP_ALIGN, &dev->flags); |
| |
| smsc95xx_init_mac_address(dev); |
| |
| /* Init all registers */ |
| ret = smsc95xx_reset(dev); |
| if (ret) |
| goto free_pdata; |
| |
| pdata->mdiobus = mdiobus_alloc(); |
| if (!pdata->mdiobus) { |
| ret = -ENOMEM; |
| goto free_pdata; |
| } |
| |
| ret = smsc95xx_read_reg(dev, HW_CFG, &val); |
| if (ret < 0) |
| goto free_mdio; |
| |
| is_internal_phy = !(val & HW_CFG_PSEL_); |
| if (is_internal_phy) |
| pdata->mdiobus->phy_mask = ~(1u << SMSC95XX_INTERNAL_PHY_ID); |
| |
| pdata->mdiobus->priv = dev; |
| pdata->mdiobus->read = smsc95xx_mdiobus_read; |
| pdata->mdiobus->write = smsc95xx_mdiobus_write; |
| pdata->mdiobus->name = "smsc95xx-mdiobus"; |
| pdata->mdiobus->parent = &dev->udev->dev; |
| |
| snprintf(pdata->mdiobus->id, ARRAY_SIZE(pdata->mdiobus->id), |
| "usb-%03d:%03d", dev->udev->bus->busnum, dev->udev->devnum); |
| |
| ret = mdiobus_register(pdata->mdiobus); |
| if (ret) { |
| netdev_err(dev->net, "Could not register MDIO bus\n"); |
| goto free_mdio; |
| } |
| |
| pdata->phydev = phy_find_first(pdata->mdiobus); |
| if (!pdata->phydev) { |
| netdev_err(dev->net, "no PHY found\n"); |
| ret = -ENODEV; |
| goto unregister_mdio; |
| } |
| |
| pdata->phydev->is_internal = is_internal_phy; |
| |
| /* detect device revision as different features may be available */ |
| ret = smsc95xx_read_reg(dev, ID_REV, &val); |
| if (ret < 0) |
| goto unregister_mdio; |
| |
| val >>= 16; |
| if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) || |
| (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_)) |
| pdata->features = (FEATURE_8_WAKEUP_FILTERS | |
| FEATURE_PHY_NLP_CROSSOVER | |
| FEATURE_REMOTE_WAKEUP); |
| else if (val == ID_REV_CHIP_ID_9512_) |
| pdata->features = FEATURE_8_WAKEUP_FILTERS; |
| |
| dev->net->netdev_ops = &smsc95xx_netdev_ops; |
| dev->net->ethtool_ops = &smsc95xx_ethtool_ops; |
| dev->net->flags |= IFF_MULTICAST; |
| dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM; |
| dev->net->min_mtu = ETH_MIN_MTU; |
| dev->net->max_mtu = ETH_DATA_LEN; |
| dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; |
| |
| ret = phy_connect_direct(dev->net, pdata->phydev, |
| &smsc95xx_handle_link_change, |
| PHY_INTERFACE_MODE_MII); |
| if (ret) { |
| netdev_err(dev->net, "can't attach PHY to %s\n", pdata->mdiobus->id); |
| goto unregister_mdio; |
| } |
| |
| phy_attached_info(dev->net->phydev); |
| |
| return 0; |
| |
| unregister_mdio: |
| mdiobus_unregister(pdata->mdiobus); |
| |
| free_mdio: |
| mdiobus_free(pdata->mdiobus); |
| |
| free_pdata: |
| kfree(pdata); |
| return ret; |
| } |
| |
| static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| |
| phy_disconnect(dev->net->phydev); |
| mdiobus_unregister(pdata->mdiobus); |
| mdiobus_free(pdata->mdiobus); |
| netif_dbg(dev, ifdown, dev->net, "free pdata\n"); |
| kfree(pdata); |
| } |
| |
| static int smsc95xx_start_phy(struct usbnet *dev) |
| { |
| phy_start(dev->net->phydev); |
| |
| return 0; |
| } |
| |
| static int smsc95xx_stop(struct usbnet *dev) |
| { |
| phy_stop(dev->net->phydev); |
| |
| return 0; |
| } |
| |
| static u32 smsc_crc(const u8 *buffer, size_t len, int filter) |
| { |
| u32 crc = bitrev16(crc16(0xFFFF, buffer, len)); |
| return crc << ((filter % 2) * 16); |
| } |
| |
| static int smsc95xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask) |
| { |
| int ret; |
| |
| netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n"); |
| |
| /* read to clear */ |
| ret = smsc95xx_mdio_read_nopm(dev, PHY_INT_SRC); |
| if (ret < 0) |
| return ret; |
| |
| /* enable interrupt source */ |
| ret = smsc95xx_mdio_read_nopm(dev, PHY_INT_MASK); |
| if (ret < 0) |
| return ret; |
| |
| ret |= mask; |
| |
| smsc95xx_mdio_write_nopm(dev, PHY_INT_MASK, ret); |
| |
| return 0; |
| } |
| |
| static int smsc95xx_link_ok_nopm(struct usbnet *dev) |
| { |
| int ret; |
| |
| /* first, a dummy read, needed to latch some MII phys */ |
| ret = smsc95xx_mdio_read_nopm(dev, MII_BMSR); |
| if (ret < 0) |
| return ret; |
| |
| ret = smsc95xx_mdio_read_nopm(dev, MII_BMSR); |
| if (ret < 0) |
| return ret; |
| |
| return !!(ret & BMSR_LSTATUS); |
| } |
| |
| static int smsc95xx_enter_suspend0(struct usbnet *dev) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| u32 val; |
| int ret; |
| |
| ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); |
| if (ret < 0) |
| return ret; |
| |
| val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_)); |
| val |= PM_CTL_SUS_MODE_0; |
| |
| ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); |
| if (ret < 0) |
| return ret; |
| |
| /* clear wol status */ |
| val &= ~PM_CTL_WUPS_; |
| val |= PM_CTL_WUPS_WOL_; |
| |
| /* enable energy detection */ |
| if (pdata->wolopts & WAKE_PHY) |
| val |= PM_CTL_WUPS_ED_; |
| |
| ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); |
| if (ret < 0) |
| return ret; |
| |
| /* read back PM_CTRL */ |
| ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); |
| if (ret < 0) |
| return ret; |
| |
| pdata->suspend_flags |= SUSPEND_SUSPEND0; |
| |
| return 0; |
| } |
| |
| static int smsc95xx_enter_suspend1(struct usbnet *dev) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| u32 val; |
| int ret; |
| |
| /* reconfigure link pulse detection timing for |
| * compatibility with non-standard link partners |
| */ |
| if (pdata->features & FEATURE_PHY_NLP_CROSSOVER) |
| smsc95xx_mdio_write_nopm(dev, PHY_EDPD_CONFIG, |
| PHY_EDPD_CONFIG_DEFAULT); |
| |
| /* enable energy detect power-down mode */ |
| ret = smsc95xx_mdio_read_nopm(dev, PHY_MODE_CTRL_STS); |
| if (ret < 0) |
| return ret; |
| |
| ret |= MODE_CTRL_STS_EDPWRDOWN_; |
| |
| smsc95xx_mdio_write_nopm(dev, PHY_MODE_CTRL_STS, ret); |
| |
| /* enter SUSPEND1 mode */ |
| ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); |
| if (ret < 0) |
| return ret; |
| |
| val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); |
| val |= PM_CTL_SUS_MODE_1; |
| |
| ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); |
| if (ret < 0) |
| return ret; |
| |
| /* clear wol status, enable energy detection */ |
| val &= ~PM_CTL_WUPS_; |
| val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_); |
| |
| ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); |
| if (ret < 0) |
| return ret; |
| |
| pdata->suspend_flags |= SUSPEND_SUSPEND1; |
| |
| return 0; |
| } |
| |
| static int smsc95xx_enter_suspend2(struct usbnet *dev) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| u32 val; |
| int ret; |
| |
| ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); |
| if (ret < 0) |
| return ret; |
| |
| val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); |
| val |= PM_CTL_SUS_MODE_2; |
| |
| ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); |
| if (ret < 0) |
| return ret; |
| |
| pdata->suspend_flags |= SUSPEND_SUSPEND2; |
| |
| return 0; |
| } |
| |
| static int smsc95xx_enter_suspend3(struct usbnet *dev) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| u32 val; |
| int ret; |
| |
| ret = smsc95xx_read_reg_nopm(dev, RX_FIFO_INF, &val); |
| if (ret < 0) |
| return ret; |
| |
| if (val & RX_FIFO_INF_USED_) { |
| netdev_info(dev->net, "rx fifo not empty in autosuspend\n"); |
| return -EBUSY; |
| } |
| |
| ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); |
| if (ret < 0) |
| return ret; |
| |
| val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_); |
| val |= PM_CTL_SUS_MODE_3 | PM_CTL_RES_CLR_WKP_STS; |
| |
| ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); |
| if (ret < 0) |
| return ret; |
| |
| /* clear wol status */ |
| val &= ~PM_CTL_WUPS_; |
| val |= PM_CTL_WUPS_WOL_; |
| |
| ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); |
| if (ret < 0) |
| return ret; |
| |
| pdata->suspend_flags |= SUSPEND_SUSPEND3; |
| |
| return 0; |
| } |
| |
| static int smsc95xx_autosuspend(struct usbnet *dev, u32 link_up) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| int ret; |
| |
| if (!netif_running(dev->net)) { |
| /* interface is ifconfig down so fully power down hw */ |
| netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n"); |
| return smsc95xx_enter_suspend2(dev); |
| } |
| |
| if (!link_up) { |
| /* link is down so enter EDPD mode, but only if device can |
| * reliably resume from it. This check should be redundant |
| * as current FEATURE_REMOTE_WAKEUP parts also support |
| * FEATURE_PHY_NLP_CROSSOVER but it's included for clarity */ |
| if (!(pdata->features & FEATURE_PHY_NLP_CROSSOVER)) { |
| netdev_warn(dev->net, "EDPD not supported\n"); |
| return -EBUSY; |
| } |
| |
| netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n"); |
| |
| /* enable PHY wakeup events for if cable is attached */ |
| ret = smsc95xx_enable_phy_wakeup_interrupts(dev, |
| PHY_INT_MASK_ANEG_COMP_); |
| if (ret < 0) { |
| netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); |
| return ret; |
| } |
| |
| netdev_info(dev->net, "entering SUSPEND1 mode\n"); |
| return smsc95xx_enter_suspend1(dev); |
| } |
| |
| /* enable PHY wakeup events so we remote wakeup if cable is pulled */ |
| ret = smsc95xx_enable_phy_wakeup_interrupts(dev, |
| PHY_INT_MASK_LINK_DOWN_); |
| if (ret < 0) { |
| netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); |
| return ret; |
| } |
| |
| netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n"); |
| return smsc95xx_enter_suspend3(dev); |
| } |
| |
| static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message) |
| { |
| struct usbnet *dev = usb_get_intfdata(intf); |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| u32 val, link_up; |
| int ret; |
| |
| ret = usbnet_suspend(intf, message); |
| if (ret < 0) { |
| netdev_warn(dev->net, "usbnet_suspend error\n"); |
| return ret; |
| } |
| |
| if (pdata->suspend_flags) { |
| netdev_warn(dev->net, "error during last resume\n"); |
| pdata->suspend_flags = 0; |
| } |
| |
| /* determine if link is up using only _nopm functions */ |
| link_up = smsc95xx_link_ok_nopm(dev); |
| |
| if (message.event == PM_EVENT_AUTO_SUSPEND && |
| (pdata->features & FEATURE_REMOTE_WAKEUP)) { |
| ret = smsc95xx_autosuspend(dev, link_up); |
| goto done; |
| } |
| |
| /* if we get this far we're not autosuspending */ |
| /* if no wol options set, or if link is down and we're not waking on |
| * PHY activity, enter lowest power SUSPEND2 mode |
| */ |
| if (!(pdata->wolopts & SUPPORTED_WAKE) || |
| !(link_up || (pdata->wolopts & WAKE_PHY))) { |
| netdev_info(dev->net, "entering SUSPEND2 mode\n"); |
| |
| /* disable energy detect (link up) & wake up events */ |
| ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); |
| if (ret < 0) |
| goto done; |
| |
| val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_); |
| |
| ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); |
| if (ret < 0) |
| goto done; |
| |
| ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); |
| if (ret < 0) |
| goto done; |
| |
| val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_); |
| |
| ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); |
| if (ret < 0) |
| goto done; |
| |
| ret = smsc95xx_enter_suspend2(dev); |
| goto done; |
| } |
| |
| if (pdata->wolopts & WAKE_PHY) { |
| ret = smsc95xx_enable_phy_wakeup_interrupts(dev, |
| (PHY_INT_MASK_ANEG_COMP_ | PHY_INT_MASK_LINK_DOWN_)); |
| if (ret < 0) { |
| netdev_warn(dev->net, "error enabling PHY wakeup ints\n"); |
| goto done; |
| } |
| |
| /* if link is down then configure EDPD and enter SUSPEND1, |
| * otherwise enter SUSPEND0 below |
| */ |
| if (!link_up) { |
| netdev_info(dev->net, "entering SUSPEND1 mode\n"); |
| ret = smsc95xx_enter_suspend1(dev); |
| goto done; |
| } |
| } |
| |
| if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { |
| u32 *filter_mask = kcalloc(32, sizeof(u32), GFP_KERNEL); |
| u32 command[2]; |
| u32 offset[2]; |
| u32 crc[4]; |
| int wuff_filter_count = |
| (pdata->features & FEATURE_8_WAKEUP_FILTERS) ? |
| LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM; |
| int i, filter = 0; |
| |
| if (!filter_mask) { |
| netdev_warn(dev->net, "Unable to allocate filter_mask\n"); |
| ret = -ENOMEM; |
| goto done; |
| } |
| |
| memset(command, 0, sizeof(command)); |
| memset(offset, 0, sizeof(offset)); |
| memset(crc, 0, sizeof(crc)); |
| |
| if (pdata->wolopts & WAKE_BCAST) { |
| const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
| netdev_info(dev->net, "enabling broadcast detection\n"); |
| filter_mask[filter * 4] = 0x003F; |
| filter_mask[filter * 4 + 1] = 0x00; |
| filter_mask[filter * 4 + 2] = 0x00; |
| filter_mask[filter * 4 + 3] = 0x00; |
| command[filter/4] |= 0x05UL << ((filter % 4) * 8); |
| offset[filter/4] |= 0x00 << ((filter % 4) * 8); |
| crc[filter/2] |= smsc_crc(bcast, 6, filter); |
| filter++; |
| } |
| |
| if (pdata->wolopts & WAKE_MCAST) { |
| const u8 mcast[] = {0x01, 0x00, 0x5E}; |
| netdev_info(dev->net, "enabling multicast detection\n"); |
| filter_mask[filter * 4] = 0x0007; |
| filter_mask[filter * 4 + 1] = 0x00; |
| filter_mask[filter * 4 + 2] = 0x00; |
| filter_mask[filter * 4 + 3] = 0x00; |
| command[filter/4] |= 0x09UL << ((filter % 4) * 8); |
| offset[filter/4] |= 0x00 << ((filter % 4) * 8); |
| crc[filter/2] |= smsc_crc(mcast, 3, filter); |
| filter++; |
| } |
| |
| if (pdata->wolopts & WAKE_ARP) { |
| const u8 arp[] = {0x08, 0x06}; |
| netdev_info(dev->net, "enabling ARP detection\n"); |
| filter_mask[filter * 4] = 0x0003; |
| filter_mask[filter * 4 + 1] = 0x00; |
| filter_mask[filter * 4 + 2] = 0x00; |
| filter_mask[filter * 4 + 3] = 0x00; |
| command[filter/4] |= 0x05UL << ((filter % 4) * 8); |
| offset[filter/4] |= 0x0C << ((filter % 4) * 8); |
| crc[filter/2] |= smsc_crc(arp, 2, filter); |
| filter++; |
| } |
| |
| if (pdata->wolopts & WAKE_UCAST) { |
| netdev_info(dev->net, "enabling unicast detection\n"); |
| filter_mask[filter * 4] = 0x003F; |
| filter_mask[filter * 4 + 1] = 0x00; |
| filter_mask[filter * 4 + 2] = 0x00; |
| filter_mask[filter * 4 + 3] = 0x00; |
| command[filter/4] |= 0x01UL << ((filter % 4) * 8); |
| offset[filter/4] |= 0x00 << ((filter % 4) * 8); |
| crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter); |
| filter++; |
| } |
| |
| for (i = 0; i < (wuff_filter_count * 4); i++) { |
| ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]); |
| if (ret < 0) { |
| kfree(filter_mask); |
| goto done; |
| } |
| } |
| kfree(filter_mask); |
| |
| for (i = 0; i < (wuff_filter_count / 4); i++) { |
| ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]); |
| if (ret < 0) |
| goto done; |
| } |
| |
| for (i = 0; i < (wuff_filter_count / 4); i++) { |
| ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]); |
| if (ret < 0) |
| goto done; |
| } |
| |
| for (i = 0; i < (wuff_filter_count / 2); i++) { |
| ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]); |
| if (ret < 0) |
| goto done; |
| } |
| |
| /* clear any pending pattern match packet status */ |
| ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); |
| if (ret < 0) |
| goto done; |
| |
| val |= WUCSR_WUFR_; |
| |
| ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); |
| if (ret < 0) |
| goto done; |
| } |
| |
| if (pdata->wolopts & WAKE_MAGIC) { |
| /* clear any pending magic packet status */ |
| ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); |
| if (ret < 0) |
| goto done; |
| |
| val |= WUCSR_MPR_; |
| |
| ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); |
| if (ret < 0) |
| goto done; |
| } |
| |
| /* enable/disable wakeup sources */ |
| ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); |
| if (ret < 0) |
| goto done; |
| |
| if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { |
| netdev_info(dev->net, "enabling pattern match wakeup\n"); |
| val |= WUCSR_WAKE_EN_; |
| } else { |
| netdev_info(dev->net, "disabling pattern match wakeup\n"); |
| val &= ~WUCSR_WAKE_EN_; |
| } |
| |
| if (pdata->wolopts & WAKE_MAGIC) { |
| netdev_info(dev->net, "enabling magic packet wakeup\n"); |
| val |= WUCSR_MPEN_; |
| } else { |
| netdev_info(dev->net, "disabling magic packet wakeup\n"); |
| val &= ~WUCSR_MPEN_; |
| } |
| |
| ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); |
| if (ret < 0) |
| goto done; |
| |
| /* enable wol wakeup source */ |
| ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); |
| if (ret < 0) |
| goto done; |
| |
| val |= PM_CTL_WOL_EN_; |
| |
| /* phy energy detect wakeup source */ |
| if (pdata->wolopts & WAKE_PHY) |
| val |= PM_CTL_ED_EN_; |
| |
| ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); |
| if (ret < 0) |
| goto done; |
| |
| /* enable receiver to enable frame reception */ |
| smsc95xx_start_rx_path(dev, 1); |
| |
| /* some wol options are enabled, so enter SUSPEND0 */ |
| netdev_info(dev->net, "entering SUSPEND0 mode\n"); |
| ret = smsc95xx_enter_suspend0(dev); |
| |
| done: |
| /* |
| * TODO: resume() might need to handle the suspend failure |
| * in system sleep |
| */ |
| if (ret && PMSG_IS_AUTO(message)) |
| usbnet_resume(intf); |
| |
| return ret; |
| } |
| |
| static int smsc95xx_resume(struct usb_interface *intf) |
| { |
| struct usbnet *dev = usb_get_intfdata(intf); |
| struct smsc95xx_priv *pdata; |
| u8 suspend_flags; |
| int ret; |
| u32 val; |
| |
| BUG_ON(!dev); |
| pdata = dev->driver_priv; |
| suspend_flags = pdata->suspend_flags; |
| |
| netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags); |
| |
| /* do this first to ensure it's cleared even in error case */ |
| pdata->suspend_flags = 0; |
| |
| if (suspend_flags & SUSPEND_ALLMODES) { |
| /* clear wake-up sources */ |
| ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val); |
| if (ret < 0) |
| return ret; |
| |
| val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_); |
| |
| ret = smsc95xx_write_reg_nopm(dev, WUCSR, val); |
| if (ret < 0) |
| return ret; |
| |
| /* clear wake-up status */ |
| ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val); |
| if (ret < 0) |
| return ret; |
| |
| val &= ~PM_CTL_WOL_EN_; |
| val |= PM_CTL_WUPS_; |
| |
| ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val); |
| if (ret < 0) |
| return ret; |
| } |
| |
| ret = usbnet_resume(intf); |
| if (ret < 0) |
| netdev_warn(dev->net, "usbnet_resume error\n"); |
| |
| phy_init_hw(pdata->phydev); |
| return ret; |
| } |
| |
| static int smsc95xx_reset_resume(struct usb_interface *intf) |
| { |
| struct usbnet *dev = usb_get_intfdata(intf); |
| int ret; |
| |
| ret = smsc95xx_reset(dev); |
| if (ret < 0) |
| return ret; |
| |
| return smsc95xx_resume(intf); |
| } |
| |
| static void smsc95xx_rx_csum_offload(struct sk_buff *skb) |
| { |
| skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2); |
| skb->ip_summed = CHECKSUM_COMPLETE; |
| skb_trim(skb, skb->len - 2); |
| } |
| |
| static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) |
| { |
| /* This check is no longer done by usbnet */ |
| if (skb->len < dev->net->hard_header_len) |
| return 0; |
| |
| while (skb->len > 0) { |
| u32 header, align_count; |
| struct sk_buff *ax_skb; |
| unsigned char *packet; |
| u16 size; |
| |
| header = get_unaligned_le32(skb->data); |
| skb_pull(skb, 4 + NET_IP_ALIGN); |
| packet = skb->data; |
| |
| /* get the packet length */ |
| size = (u16)((header & RX_STS_FL_) >> 16); |
| align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4; |
| |
| if (unlikely(size > skb->len)) { |
| netif_dbg(dev, rx_err, dev->net, |
| "size err header=0x%08x\n", header); |
| return 0; |
| } |
| |
| if (unlikely(header & RX_STS_ES_)) { |
| netif_dbg(dev, rx_err, dev->net, |
| "Error header=0x%08x\n", header); |
| dev->net->stats.rx_errors++; |
| dev->net->stats.rx_dropped++; |
| |
| if (header & RX_STS_CRC_) { |
| dev->net->stats.rx_crc_errors++; |
| } else { |
| if (header & (RX_STS_TL_ | RX_STS_RF_)) |
| dev->net->stats.rx_frame_errors++; |
| |
| if ((header & RX_STS_LE_) && |
| (!(header & RX_STS_FT_))) |
| dev->net->stats.rx_length_errors++; |
| } |
| } else { |
| /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */ |
| if (unlikely(size > (ETH_FRAME_LEN + 12))) { |
| netif_dbg(dev, rx_err, dev->net, |
| "size err header=0x%08x\n", header); |
| return 0; |
| } |
| |
| /* last frame in this batch */ |
| if (skb->len == size) { |
| if (dev->net->features & NETIF_F_RXCSUM) |
| smsc95xx_rx_csum_offload(skb); |
| skb_trim(skb, skb->len - 4); /* remove fcs */ |
| skb->truesize = size + sizeof(struct sk_buff); |
| |
| return 1; |
| } |
| |
| ax_skb = skb_clone(skb, GFP_ATOMIC); |
| if (unlikely(!ax_skb)) { |
| netdev_warn(dev->net, "Error allocating skb\n"); |
| return 0; |
| } |
| |
| ax_skb->len = size; |
| ax_skb->data = packet; |
| skb_set_tail_pointer(ax_skb, size); |
| |
| if (dev->net->features & NETIF_F_RXCSUM) |
| smsc95xx_rx_csum_offload(ax_skb); |
| skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */ |
| ax_skb->truesize = size + sizeof(struct sk_buff); |
| |
| usbnet_skb_return(dev, ax_skb); |
| } |
| |
| skb_pull(skb, size); |
| |
| /* padding bytes before the next frame starts */ |
| if (skb->len) |
| skb_pull(skb, align_count); |
| } |
| |
| return 1; |
| } |
| |
| static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb) |
| { |
| u16 low_16 = (u16)skb_checksum_start_offset(skb); |
| u16 high_16 = low_16 + skb->csum_offset; |
| return (high_16 << 16) | low_16; |
| } |
| |
| /* The TX CSUM won't work if the checksum lies in the last 4 bytes of the |
| * transmission. This is fairly unlikely, only seems to trigger with some |
| * short TCP ACK packets sent. |
| * |
| * Note, this calculation should probably check for the alignment of the |
| * data as well, but a straight check for csum being in the last four bytes |
| * of the packet should be ok for now. |
| */ |
| static bool smsc95xx_can_tx_checksum(struct sk_buff *skb) |
| { |
| unsigned int len = skb->len - skb_checksum_start_offset(skb); |
| |
| if (skb->len <= 45) |
| return false; |
| return skb->csum_offset < (len - (4 + 1)); |
| } |
| |
| static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev, |
| struct sk_buff *skb, gfp_t flags) |
| { |
| bool csum = skb->ip_summed == CHECKSUM_PARTIAL; |
| int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD; |
| u32 tx_cmd_a, tx_cmd_b; |
| void *ptr; |
| |
| /* We do not advertise SG, so skbs should be already linearized */ |
| BUG_ON(skb_shinfo(skb)->nr_frags); |
| |
| /* Make writable and expand header space by overhead if required */ |
| if (skb_cow_head(skb, overhead)) { |
| /* Must deallocate here as returning NULL to indicate error |
| * means the skb won't be deallocated in the caller. |
| */ |
| dev_kfree_skb_any(skb); |
| return NULL; |
| } |
| |
| tx_cmd_b = (u32)skb->len; |
| tx_cmd_a = tx_cmd_b | TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_; |
| |
| if (csum) { |
| if (!smsc95xx_can_tx_checksum(skb)) { |
| /* workaround - hardware tx checksum does not work |
| * properly with extremely small packets */ |
| long csstart = skb_checksum_start_offset(skb); |
| __wsum calc = csum_partial(skb->data + csstart, |
| skb->len - csstart, 0); |
| *((__sum16 *)(skb->data + csstart |
| + skb->csum_offset)) = csum_fold(calc); |
| |
| csum = false; |
| } else { |
| u32 csum_preamble = smsc95xx_calc_csum_preamble(skb); |
| ptr = skb_push(skb, 4); |
| put_unaligned_le32(csum_preamble, ptr); |
| |
| tx_cmd_a += 4; |
| tx_cmd_b += 4; |
| tx_cmd_b |= TX_CMD_B_CSUM_ENABLE; |
| } |
| } |
| |
| ptr = skb_push(skb, 8); |
| put_unaligned_le32(tx_cmd_a, ptr); |
| put_unaligned_le32(tx_cmd_b, ptr+4); |
| |
| return skb; |
| } |
| |
| static int smsc95xx_manage_power(struct usbnet *dev, int on) |
| { |
| struct smsc95xx_priv *pdata = dev->driver_priv; |
| |
| dev->intf->needs_remote_wakeup = on; |
| |
| if (pdata->features & FEATURE_REMOTE_WAKEUP) |
| return 0; |
| |
| /* this chip revision isn't capable of remote wakeup */ |
| netdev_info(dev->net, "hardware isn't capable of remote wakeup\n"); |
| |
| if (on) |
| usb_autopm_get_interface_no_resume(dev->intf); |
| else |
| usb_autopm_put_interface(dev->intf); |
| |
| return 0; |
| } |
| |
| static const struct driver_info smsc95xx_info = { |
| .description = "smsc95xx USB 2.0 Ethernet", |
| .bind = smsc95xx_bind, |
| .unbind = smsc95xx_unbind, |
| .reset = smsc95xx_reset, |
| .check_connect = smsc95xx_start_phy, |
| .stop = smsc95xx_stop, |
| .rx_fixup = smsc95xx_rx_fixup, |
| .tx_fixup = smsc95xx_tx_fixup, |
| .status = smsc95xx_status, |
| .manage_power = smsc95xx_manage_power, |
| .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, |
| }; |
| |
| static const struct usb_device_id products[] = { |
| { |
| /* SMSC9500 USB Ethernet Device */ |
| USB_DEVICE(0x0424, 0x9500), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9505 USB Ethernet Device */ |
| USB_DEVICE(0x0424, 0x9505), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9500A USB Ethernet Device */ |
| USB_DEVICE(0x0424, 0x9E00), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9505A USB Ethernet Device */ |
| USB_DEVICE(0x0424, 0x9E01), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9512/9514 USB Hub & Ethernet Device */ |
| USB_DEVICE(0x0424, 0xec00), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9500 USB Ethernet Device (SAL10) */ |
| USB_DEVICE(0x0424, 0x9900), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9505 USB Ethernet Device (SAL10) */ |
| USB_DEVICE(0x0424, 0x9901), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9500A USB Ethernet Device (SAL10) */ |
| USB_DEVICE(0x0424, 0x9902), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9505A USB Ethernet Device (SAL10) */ |
| USB_DEVICE(0x0424, 0x9903), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */ |
| USB_DEVICE(0x0424, 0x9904), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9500A USB Ethernet Device (HAL) */ |
| USB_DEVICE(0x0424, 0x9905), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9505A USB Ethernet Device (HAL) */ |
| USB_DEVICE(0x0424, 0x9906), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9500 USB Ethernet Device (Alternate ID) */ |
| USB_DEVICE(0x0424, 0x9907), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9500A USB Ethernet Device (Alternate ID) */ |
| USB_DEVICE(0x0424, 0x9908), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */ |
| USB_DEVICE(0x0424, 0x9909), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC LAN9530 USB Ethernet Device */ |
| USB_DEVICE(0x0424, 0x9530), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC LAN9730 USB Ethernet Device */ |
| USB_DEVICE(0x0424, 0x9730), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { |
| /* SMSC LAN89530 USB Ethernet Device */ |
| USB_DEVICE(0x0424, 0x9E08), |
| .driver_info = (unsigned long) &smsc95xx_info, |
| }, |
| { }, /* END */ |
| }; |
| MODULE_DEVICE_TABLE(usb, products); |
| |
| static struct usb_driver smsc95xx_driver = { |
| .name = "smsc95xx", |
| .id_table = products, |
| .probe = usbnet_probe, |
| .suspend = smsc95xx_suspend, |
| .resume = smsc95xx_resume, |
| .reset_resume = smsc95xx_reset_resume, |
| .disconnect = usbnet_disconnect, |
| .disable_hub_initiated_lpm = 1, |
| .supports_autosuspend = 1, |
| }; |
| |
| module_usb_driver(smsc95xx_driver); |
| |
| MODULE_AUTHOR("Nancy Lin"); |
| MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>"); |
| MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices"); |
| MODULE_LICENSE("GPL"); |