| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Steve Glendinning | 7466 | 73.97% | 33 | 29.46% |
| Andre Edich | 574 | 5.69% | 5 | 4.46% |
| Lukas Wunner | 409 | 4.05% | 4 | 3.57% |
| Joe Perches | 299 | 2.96% | 4 | 3.57% |
| Ming Lei | 174 | 1.72% | 7 | 6.25% |
| Emeric Vigier | 139 | 1.38% | 1 | 0.89% |
| Ben Dooks | 106 | 1.05% | 4 | 3.57% |
| Martyn Welch | 99 | 0.98% | 1 | 0.89% |
| Alexandru Tachici | 86 | 0.85% | 1 | 0.89% |
| Oleksij Rempel | 83 | 0.82% | 1 | 0.89% |
| Woojung Huh | 79 | 0.78% | 1 | 0.89% |
| Fabio Estevam | 66 | 0.65% | 1 | 0.89% |
| Michał Mirosław | 64 | 0.63% | 3 | 2.68% |
| Stephen Hemminger | 54 | 0.54% | 1 | 0.89% |
| Joonyoung Shim | 47 | 0.47% | 1 | 0.89% |
| Szymon Heidrich | 31 | 0.31% | 1 | 0.89% |
| Marc Zyngier | 30 | 0.30% | 1 | 0.89% |
| Peter Korsgaard | 24 | 0.24% | 1 | 0.89% |
| Łukasz Stelmach | 24 | 0.24% | 1 | 0.89% |
| Sudip Mukherjee | 20 | 0.20% | 1 | 0.89% |
| Christoph Fritz | 20 | 0.20% | 1 | 0.89% |
| Jakub Kiciński | 17 | 0.17% | 2 | 1.79% |
| Emil Goode | 16 | 0.16% | 1 | 0.89% |
| Stefan Wahren | 16 | 0.16% | 1 | 0.89% |
| Stephane Fillod | 16 | 0.16% | 1 | 0.89% |
| Jiri Pirko | 15 | 0.15% | 4 | 3.57% |
| Nisar Sayed <Nisar.Sayed@microchip.com> | 14 | 0.14% | 2 | 1.79% |
| Florian Fainelli | 13 | 0.13% | 1 | 0.89% |
| Arnd Bergmann | 11 | 0.11% | 2 | 1.79% |
| Herbert Xu | 10 | 0.10% | 1 | 0.89% |
| Philippe Reynes | 8 | 0.08% | 1 | 0.89% |
| Parthiban Veerasooran | 7 | 0.07% | 1 | 0.89% |
| Dan Carpenter | 7 | 0.07% | 2 | 1.79% |
| Sage Sharp | 5 | 0.05% | 1 | 0.89% |
| Petr Kulhavy | 5 | 0.05% | 1 | 0.89% |
| James Hughes | 5 | 0.05% | 1 | 0.89% |
| Markus Reichl | 5 | 0.05% | 1 | 0.89% |
| Bernard Blackham | 4 | 0.04% | 1 | 0.89% |
| Greg Ungerer | 4 | 0.04% | 1 | 0.89% |
| Herbert Valerio Riedel | 3 | 0.03% | 1 | 0.89% |
| Kees Cook | 3 | 0.03% | 1 | 0.89% |
| Thomas Gleixner | 2 | 0.02% | 1 | 0.89% |
| Linus Torvalds (pre-git) | 2 | 0.02% | 1 | 0.89% |
| Petr Štetiar | 2 | 0.02% | 1 | 0.89% |
| Paolo Pisati | 2 | 0.02% | 1 | 0.89% |
| Greg Kroah-Hartman | 1 | 0.01% | 1 | 0.89% |
| Linus Torvalds | 1 | 0.01% | 1 | 0.89% |
| Martin Wetterwald | 1 | 0.01% | 1 | 0.89% |
| Hannes Eder | 1 | 0.01% | 1 | 0.89% |
| Danny Kukawka | 1 | 0.01% | 1 | 0.89% |
| Heiner Kallweit | 1 | 0.01% | 1 | 0.89% |
| Rusty Russell | 1 | 0.01% | 1 | 0.89% |
| Total | 10093 | 112 |
// 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/irq.h> #include <linux/irqdomain.h> #include <linux/mdio.h> #include <linux/phy.h> #include <net/selftests.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) #define SMSC95XX_NR_IRQS (1) /* raise to 12 for GPIOs */ #define PHY_HWIRQ (SMSC95XX_NR_IRQS - 1) struct smsc95xx_priv { u32 mac_cr; u32 hash_hi; u32 hash_lo; u32 wolopts; spinlock_t mac_cr_lock; u8 features; u8 suspend_flags; bool is_internal_phy; struct irq_chip irqchip; struct irq_domain *irqdomain; struct fwnode_handle *irqfwnode; struct mii_bus *mdiobus; struct phy_device *phydev; struct task_struct *pm_task; }; 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) { struct smsc95xx_priv *pdata = dev->driver_priv; u32 buf; int ret; int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); if (current != pdata->pm_task) 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 < 0) { 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) { struct smsc95xx_priv *pdata = dev->driver_priv; u32 buf; int ret; int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); if (current != pdata->pm_task) 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; } /* 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) { unsigned long start_time = jiffies; u32 val; int ret; do { ret = smsc95xx_read_reg(dev, MII_ADDR, &val); 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) { u32 val, addr; int ret; mutex_lock(&dev->phy_mutex); /* confirm MII not busy */ ret = smsc95xx_phy_wait_not_busy(dev); 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); if (ret < 0) { if (ret != -ENODEV) netdev_warn(dev->net, "Error writing MII_ADDR\n"); goto done; } ret = smsc95xx_phy_wait_not_busy(dev); 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); 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) { u32 val, addr; int ret; mutex_lock(&dev->phy_mutex); /* confirm MII not busy */ ret = smsc95xx_phy_wait_not_busy(dev); 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); 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); if (ret < 0) { if (ret != -ENODEV) netdev_warn(dev->net, "Error writing MII_ADDR\n"); goto done; } ret = smsc95xx_phy_wait_not_busy(dev); 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_mdiobus_reset(struct mii_bus *bus) { struct smsc95xx_priv *pdata; struct usbnet *dev; u32 val; int ret; dev = bus->priv; pdata = dev->driver_priv; if (pdata->is_internal_phy) return 0; mutex_lock(&dev->phy_mutex); ret = smsc95xx_read_reg(dev, PM_CTRL, &val); if (ret < 0) goto reset_out; val |= PM_CTL_PHY_RST_; ret = smsc95xx_write_reg(dev, PM_CTRL, val); if (ret < 0) goto reset_out; /* Driver has no knowledge at this point about the external PHY. * The 802.3 specifies that the reset process shall * be completed within 0.5 s. */ fsleep(500000); reset_out: mutex_unlock(&dev->phy_mutex); return 0; } 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); } 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); 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) { struct smsc95xx_priv *pdata = dev->driver_priv; unsigned long flags; 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); local_irq_save(flags); if (intdata & INT_ENP_PHY_INT_) generic_handle_domain_irq(pdata->irqdomain, PHY_HWIRQ); else netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n", intdata); local_irq_restore(flags); } /* 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 void smsc95xx_ethtool_get_strings(struct net_device *netdev, u32 sset, u8 *data) { switch (sset) { case ETH_SS_TEST: net_selftest_get_strings(data); break; } } static int smsc95xx_ethtool_get_sset_count(struct net_device *ndev, int sset) { switch (sset) { case ETH_SS_TEST: return net_selftest_get_count(); default: return -EOPNOTSUPP; } } 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, .self_test = net_selftest, .get_strings = smsc95xx_ethtool_get_strings, .get_sset_count = smsc95xx_ethtool_get_sset_count, }; 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) { u8 addr[ETH_ALEN]; /* maybe the boot loader passed the MAC address in devicetree */ if (!platform_get_ethdev_address(&dev->udev->dev, dev->net)) { 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, addr) == 0) { eth_hw_addr_set(dev->net, addr); 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) { 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); } 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 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); 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; char usb_path[64]; int ret, phy_irq; u32 val; 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; /* create irq domain for use by PHY driver and GPIO consumers */ usb_make_path(dev->udev, usb_path, sizeof(usb_path)); pdata->irqfwnode = irq_domain_alloc_named_fwnode(usb_path); if (!pdata->irqfwnode) { ret = -ENOMEM; goto free_pdata; } pdata->irqdomain = irq_domain_create_linear(pdata->irqfwnode, SMSC95XX_NR_IRQS, &irq_domain_simple_ops, pdata); if (!pdata->irqdomain) { ret = -ENOMEM; goto free_irqfwnode; } phy_irq = irq_create_mapping(pdata->irqdomain, PHY_HWIRQ); if (!phy_irq) { ret = -ENOENT; goto remove_irqdomain; } pdata->irqchip = dummy_irq_chip; pdata->irqchip.name = SMSC_CHIPNAME; irq_set_chip_and_handler_name(phy_irq, &pdata->irqchip, handle_simple_irq, "phy"); pdata->mdiobus = mdiobus_alloc(); if (!pdata->mdiobus) { ret = -ENOMEM; goto dispose_irq; } ret = smsc95xx_read_reg(dev, HW_CFG, &val); if (ret < 0) goto free_mdio; pdata->is_internal_phy = !(val & HW_CFG_PSEL_); if (pdata->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->reset = smsc95xx_mdiobus_reset; 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->irq = phy_irq; pdata->phydev->is_internal = pdata->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); dispose_irq: irq_dispose_mapping(phy_irq); remove_irqdomain: irq_domain_remove(pdata->irqdomain); free_irqfwnode: irq_domain_free_fwnode(pdata->irqfwnode); 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); irq_dispose_mapping(irq_find_mapping(pdata->irqdomain, PHY_HWIRQ)); irq_domain_remove(pdata->irqdomain); irq_domain_free_fwnode(pdata->irqfwnode); 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_link_ok(struct usbnet *dev) { struct smsc95xx_priv *pdata = dev->driver_priv; int ret; /* first, a dummy read, needed to latch some MII phys */ ret = smsc95xx_mdio_read(dev, pdata->phydev->mdio.addr, MII_BMSR); if (ret < 0) return ret; ret = smsc95xx_mdio_read(dev, pdata->phydev->mdio.addr, 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(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(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(dev, PM_CTRL, val); if (ret < 0) return ret; /* read back PM_CTRL */ ret = smsc95xx_read_reg(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; int ret, phy_id = pdata->phydev->mdio.addr; u32 val; /* reconfigure link pulse detection timing for * compatibility with non-standard link partners */ if (pdata->features & FEATURE_PHY_NLP_CROSSOVER) smsc95xx_mdio_write(dev, phy_id, PHY_EDPD_CONFIG, PHY_EDPD_CONFIG_DEFAULT); /* enable energy detect power-down mode */ ret = smsc95xx_mdio_read(dev, phy_id, PHY_MODE_CTRL_STS); if (ret < 0) return ret; ret |= MODE_CTRL_STS_EDPWRDOWN_; smsc95xx_mdio_write(dev, phy_id, PHY_MODE_CTRL_STS, ret); /* enter SUSPEND1 mode */ ret = smsc95xx_read_reg(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(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(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(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(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(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(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(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(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; 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"); netdev_info(dev->net, "entering SUSPEND1 mode\n"); return smsc95xx_enter_suspend1(dev); } 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; pdata->pm_task = current; ret = usbnet_suspend(intf, message); if (ret < 0) { netdev_warn(dev->net, "usbnet_suspend error\n"); pdata->pm_task = NULL; return ret; } if (pdata->suspend_flags) { netdev_warn(dev->net, "error during last resume\n"); pdata->suspend_flags = 0; } link_up = smsc95xx_link_ok(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(dev, WUCSR, &val); if (ret < 0) goto done; val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_); ret = smsc95xx_write_reg(dev, WUCSR, val); if (ret < 0) goto done; ret = smsc95xx_read_reg(dev, PM_CTRL, &val); if (ret < 0) goto done; val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_); ret = smsc95xx_write_reg(dev, PM_CTRL, val); if (ret < 0) goto done; ret = smsc95xx_enter_suspend2(dev); goto done; } if (pdata->wolopts & WAKE_PHY) { /* 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(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(dev, WUFF, command[i]); if (ret < 0) goto done; } for (i = 0; i < (wuff_filter_count / 4); i++) { ret = smsc95xx_write_reg(dev, WUFF, offset[i]); if (ret < 0) goto done; } for (i = 0; i < (wuff_filter_count / 2); i++) { ret = smsc95xx_write_reg(dev, WUFF, crc[i]); if (ret < 0) goto done; } /* clear any pending pattern match packet status */ ret = smsc95xx_read_reg(dev, WUCSR, &val); if (ret < 0) goto done; val |= WUCSR_WUFR_; ret = smsc95xx_write_reg(dev, WUCSR, val); if (ret < 0) goto done; } if (pdata->wolopts & WAKE_MAGIC) { /* clear any pending magic packet status */ ret = smsc95xx_read_reg(dev, WUCSR, &val); if (ret < 0) goto done; val |= WUCSR_MPR_; ret = smsc95xx_write_reg(dev, WUCSR, val); if (ret < 0) goto done; } /* enable/disable wakeup sources */ ret = smsc95xx_read_reg(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(dev, WUCSR, val); if (ret < 0) goto done; /* enable wol wakeup source */ ret = smsc95xx_read_reg(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(dev, PM_CTRL, val); if (ret < 0) goto done; /* enable receiver to enable frame reception */ smsc95xx_start_rx_path(dev); /* 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); pdata->pm_task = NULL; 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; pdata->pm_task = current; if (suspend_flags & SUSPEND_ALLMODES) { /* clear wake-up sources */ ret = smsc95xx_read_reg(dev, WUCSR, &val); if (ret < 0) goto done; val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_); ret = smsc95xx_write_reg(dev, WUCSR, val); if (ret < 0) goto done; /* clear wake-up status */ ret = smsc95xx_read_reg(dev, PM_CTRL, &val); if (ret < 0) goto done; val &= ~PM_CTL_WOL_EN_; val |= PM_CTL_WUPS_; ret = smsc95xx_write_reg(dev, PM_CTRL, val); if (ret < 0) goto done; } phy_init_hw(pdata->phydev); ret = usbnet_resume(intf); if (ret < 0) netdev_warn(dev->net, "usbnet_resume error\n"); done: pdata->pm_task = NULL; return ret; } static int smsc95xx_reset_resume(struct usb_interface *intf) { struct usbnet *dev = usb_get_intfdata(intf); struct smsc95xx_priv *pdata = dev->driver_priv; int ret; pdata->pm_task = current; ret = smsc95xx_reset(dev); pdata->pm_task = NULL; 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, }, { /* Microchip's EVB-LAN8670-USB 10BASE-T1S Ethernet Device */ USB_DEVICE(0x184F, 0x0051), .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");
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