/*************************************************************************** * * Copyright (C) 2004-2007 SMSC * Copyright (C) 2005 ARM * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * *************************************************************************** * Rewritten, heavily based on smsc911x simple driver by SMSC. * Partly uses io macros from smc91x.c by Nicolas Pitre * * Supported devices: * LAN9115, LAN9116, LAN9117, LAN9118 * LAN9215, LAN9216, LAN9217, LAN9218 * * History: * 05/05/2005 bahadir.balban@arm.com * - Transition to linux coding style * - Platform driver and module interface * * 17/07/2006 steve.glendinning@smsc.com * - Added support for LAN921x family * - Added workaround for multicast filters * * 31/07/2006 steve.glendinning@smsc.com * - Removed tasklet, using NAPI poll instead * - Multiple device support * - Large tidy-up following feedback from netdev list * * 03/08/2006 steve.glendinning@smsc.com * - Added ethtool support * - Convert to use generic MII interface * * 04/08/2006 bahadir.balban@arm.com * - Added ethtool eeprom r/w support * * 17/06/2007 steve.glendinning@smsc.com * - Incorporate changes from Bill Gatliff and Russell King * * 04/07/2007 steve.glendinning@smsc.com * - move irq configuration to platform_device * - fix link poller after interface is stopped and restarted * * 13/07/2007 bahadir.balban@arm.com * - set irq polarity before requesting irq */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "smsc911x.h" #define SMSC_CHIPNAME "smsc911x" #define SMSC_DRV_VERSION "2007-07-13" MODULE_LICENSE("GPL"); struct smsc911x_data { void __iomem *ioaddr; unsigned int idrev; unsigned int generation; /* used to decide which workarounds apply */ /* device configuration */ unsigned int irq_polarity; unsigned int irq_type; /* This needs to be acquired before calling any of below: * smsc911x_mac_read(), smsc911x_mac_write() * smsc911x_phy_read(), smsc911x_phy_write() */ spinlock_t phy_lock; struct net_device_stats stats; struct mii_if_info mii; unsigned int using_extphy; u32 msg_enable; #ifdef USE_LED1_WORK_AROUND unsigned int gpio_setting; unsigned int gpio_orig_setting; #endif struct net_device *netdev; struct napi_struct napi; struct timer_list link_poll_timer; unsigned int stop_link_poll; unsigned int software_irq_signal; #ifdef USE_PHY_WORK_AROUND #define MIN_PACKET_SIZE (64) char loopback_tx_pkt[MIN_PACKET_SIZE]; char loopback_rx_pkt[MIN_PACKET_SIZE]; unsigned int resetcount; #endif /* Members for Multicast filter workaround */ unsigned int multicast_update_pending; unsigned int set_bits_mask; unsigned int clear_bits_mask; unsigned int hashhi; unsigned int hashlo; }; #if SMSC_CAN_USE_32BIT static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg) { return readl(pdata->ioaddr + reg); } static inline void smsc911x_reg_write(u32 val, struct smsc911x_data *pdata, u32 reg) { writel(val, pdata->ioaddr + reg); } #elif SMSC_CAN_USE_SPI static u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg) { u32 reg_val; unsigned long flags; local_irq_save(flags); reg_val = spi_cpld_read(reg); local_irq_restore(flags); return reg_val; } static void smsc911x_reg_write(u32 val, struct smsc911x_data *pdata, u32 reg) { unsigned long flags; local_irq_save(flags); spi_cpld_write(reg, val); local_irq_restore(flags); } #else /* SMSC_CAN_USE_32BIT */ static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg) { u32 reg_val; unsigned long flags; /* these two 16-bit reads must be performed consecutively, so must * not be interrupted by our own ISR (which would start another * read operation) */ local_irq_save(flags); reg_val = ((readw(pdata->ioaddr + reg) & 0xFFFF) | ((readw(pdata->ioaddr + reg + 2) & 0xFFFF) << 16)); local_irq_restore(flags); return reg_val; } static inline void smsc911x_reg_write(u32 val, struct smsc911x_data *pdata, u32 reg) { unsigned long flags; /* these two 16-bit writes must be performed consecutively, so must * not be interrupted by our own ISR (which would start another * read operation) */ local_irq_save(flags); writew(val & 0xFFFF, pdata->ioaddr + reg); writew((val >> 16) & 0xFFFF, pdata->ioaddr + reg + 2); local_irq_restore(flags); } #endif /* SMSC_CAN_USE_32BIT */ /* Writes a packet to the TX_DATA_FIFO */ static inline void smsc911x_tx_writefifo(struct smsc911x_data *pdata, unsigned int *buf, unsigned int wordcount) { while (wordcount--) smsc911x_reg_write(*buf++, pdata, TX_DATA_FIFO); } /* Reads a packet out of the RX_DATA_FIFO */ static inline void smsc911x_rx_readfifo(struct smsc911x_data *pdata, unsigned int *buf, unsigned int wordcount) { while (wordcount--) *buf++ = smsc911x_reg_read(pdata, RX_DATA_FIFO); } /* waits for MAC not busy, with timeout. Only called by smsc911x_mac_read * and smsc911x_mac_write, so assumes phy_lock is held */ static int smsc911x_mac_notbusy(struct smsc911x_data *pdata) { int i; u32 val; for (i = 0; i < 40; i++) { val = smsc911x_reg_read(pdata, MAC_CSR_CMD); if (!(val & MAC_CSR_CMD_CSR_BUSY_)) return 1; } SMSC_WARNING("Timed out waiting for MAC not BUSY. " "MAC_CSR_CMD: 0x%08X", val); return 0; } /* Fetches a MAC register value. Assumes phy_lock is acquired */ static u32 smsc911x_mac_read(struct smsc911x_data *pdata, unsigned int offset) { unsigned int temp; #ifdef CONFIG_DEBUG_SPINLOCK if (!spin_is_locked(&pdata->phy_lock)) SMSC_WARNING("phy_lock not held"); #endif /* CONFIG_DEBUG_SPINLOCK */ temp = smsc911x_reg_read(pdata, MAC_CSR_CMD); if (unlikely(temp & MAC_CSR_CMD_CSR_BUSY_)) { SMSC_WARNING("smsc911x_mac_read failed, MAC busy at entry"); return 0xFFFFFFFF; } /* Send the MAC cmd */ smsc911x_reg_write(((offset & 0xFF) | MAC_CSR_CMD_CSR_BUSY_ | MAC_CSR_CMD_R_NOT_W_), pdata, MAC_CSR_CMD); /* Workaround for hardware read-after-write restriction */ temp = smsc911x_reg_read(pdata, BYTE_TEST); /* Wait for the read to happen */ if (likely(smsc911x_mac_notbusy(pdata))) return smsc911x_reg_read(pdata, MAC_CSR_DATA); SMSC_WARNING("smsc911x_mac_read failed, MAC busy after read"); return 0xFFFFFFFF; } /* Set a mac register, phy_lock must be acquired before calling */ static void smsc911x_mac_write(struct smsc911x_data *pdata, unsigned int offset, u32 val) { unsigned int temp; #ifdef CONFIG_DEBUG_SPINLOCK if (!spin_is_locked(&pdata->phy_lock)) SMSC_WARNING("phy_lock not held"); #endif /* CONFIG_DEBUG_SPINLOCK */ temp = smsc911x_reg_read(pdata, MAC_CSR_CMD); if (unlikely(temp & MAC_CSR_CMD_CSR_BUSY_)) { SMSC_WARNING("smsc911x_mac_write failed, MAC busy at entry"); return; } /* Send data to write */ smsc911x_reg_write(val, pdata, MAC_CSR_DATA); /* Write the actual data */ smsc911x_reg_write(((offset & 0xFF) | MAC_CSR_CMD_CSR_BUSY_), pdata, MAC_CSR_CMD); /* Workaround for hardware read-after-write restriction */ temp = smsc911x_reg_read(pdata, BYTE_TEST); /* Wait for the write to complete */ if (likely(smsc911x_mac_notbusy(pdata))) return; SMSC_WARNING("smsc911x_mac_write failed, MAC busy after write"); } /* Gets a phy register, phy_lock must be acquired before calling */ static u16 smsc911x_phy_read(struct smsc911x_data *pdata, unsigned int index) { unsigned int addr; int i; #ifdef CONFIG_DEBUG_SPINLOCK if (!spin_is_locked(&pdata->phy_lock)) SMSC_WARNING("phy_lock not held"); #endif /* CONFIG_DEBUG_SPINLOCK */ /* Confirm MII not busy */ if (unlikely(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) { SMSC_WARNING("MII is busy in smsc911x_phy_read???"); return 0; } /* Set the address, index & direction (read from PHY) */ addr = (((pdata->mii.phy_id) & 0x1F) << 11) | ((index & 0x1F) << 6); smsc911x_mac_write(pdata, MII_ACC, addr); /* Wait for read to complete w/ timeout */ for (i = 0; i < 100; i++) { /* See if MII is finished yet */ if (!(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) { return smsc911x_mac_read(pdata, MII_DATA); } } SMSC_WARNING("Timed out waiting for MII write to finish"); return 0xFFFF; } /* Sets a phy register, phy_lock must be acquired before calling */ static void smsc911x_phy_write(struct smsc911x_data *pdata, unsigned int index, u16 val) { unsigned int addr; int i; #ifdef CONFIG_DEBUG_SPINLOCK if (!spin_is_locked(&pdata->phy_lock)) SMSC_WARNING("phy_lock not held"); #endif /* CONFIG_DEBUG_SPINLOCK */ /* Confirm MII not busy */ if (unlikely(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) { SMSC_WARNING("MII is busy in smsc911x_write_phy???"); return; } /* Put the data to write in the MAC */ smsc911x_mac_write(pdata, MII_DATA, val); /* Set the address, index & direction (write to PHY) */ addr = (((pdata->mii.phy_id) & 0x1F) << 11) | ((index & 0x1F) << 6) | MII_ACC_MII_WRITE_; smsc911x_mac_write(pdata, MII_ACC, addr); /* Wait for write to complete w/ timeout */ for (i = 0; i < 100; i++) { /* See if MII is finished yet */ if (!(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) return; } SMSC_WARNING("Timed out waiting for MII write to finish"); } static int smsc911x_mdio_read(struct net_device *dev, int phy_id, int location) { struct smsc911x_data *pdata = netdev_priv(dev); unsigned long flags; int reg; spin_lock_irqsave(&pdata->phy_lock, flags); reg = smsc911x_phy_read(pdata, location); spin_unlock_irqrestore(&pdata->phy_lock, flags); return reg; } static void smsc911x_mdio_write(struct net_device *dev, int phy_id, int location, int val) { struct smsc911x_data *pdata = netdev_priv(dev); unsigned long flags; spin_lock_irqsave(&pdata->phy_lock, flags); smsc911x_phy_write(pdata, location, val); spin_unlock_irqrestore(&pdata->phy_lock, flags); } /* Autodetects and initialises external phy for SMSC9115 and SMSC9117 flavors. * If something goes wrong, returns -ENODEV to revert back to internal phy. * Performed at initialisation only, so interrupts are enabled */ static int smsc911x_phy_initialise_external(struct smsc911x_data *pdata) { unsigned int address; unsigned int hwcfg; unsigned int phyid1; unsigned int phyid2; hwcfg = smsc911x_reg_read(pdata, HW_CFG); /* External phy is requested, supported, and detected */ if (hwcfg & HW_CFG_EXT_PHY_DET_) { /* Attempt to switch to external phy for auto-detecting * its address. Assuming tx and rx are stopped because * smsc911x_phy_initialise is called before * smsc911x_rx_initialise and tx_initialise. */ /* Disable phy clocks to the MAC */ hwcfg &= (~HW_CFG_PHY_CLK_SEL_); hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_; smsc911x_reg_write(hwcfg, pdata, HW_CFG); udelay(10); /* Enough time for clocks to stop */ /* Switch to external phy */ hwcfg |= HW_CFG_EXT_PHY_EN_; smsc911x_reg_write(hwcfg, pdata, HW_CFG); /* Enable phy clocks to the MAC */ hwcfg &= (~HW_CFG_PHY_CLK_SEL_); hwcfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_; smsc911x_reg_write(hwcfg, pdata, HW_CFG); udelay(10); /* Enough time for clocks to restart */ hwcfg |= HW_CFG_SMI_SEL_; smsc911x_reg_write(hwcfg, pdata, HW_CFG); /* Auto-detect PHY */ spin_lock_irq(&pdata->phy_lock); for (address = 0; address <= 31; address++) { pdata->mii.phy_id = address; phyid1 = smsc911x_phy_read(pdata, MII_PHYSID1); phyid2 = smsc911x_phy_read(pdata, MII_PHYSID2); if ((phyid1 != 0xFFFFU) || (phyid2 != 0xFFFFU)) { SMSC_TRACE("Detected PHY at address = " "0x%02X = %d", address, address); break; } } spin_unlock_irq(&pdata->phy_lock); if ((phyid1 == 0xFFFFU) && (phyid2 == 0xFFFFU)) { SMSC_WARNING("External PHY is not accessable, " "using internal PHY instead"); /* Revert back to internal phy settings. */ /* Disable phy clocks to the MAC */ hwcfg &= (~HW_CFG_PHY_CLK_SEL_); hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_; smsc911x_reg_write(hwcfg, pdata, HW_CFG); udelay(10); /* Enough time for clocks to stop */ /* Switch to internal phy */ hwcfg &= (~HW_CFG_EXT_PHY_EN_); smsc911x_reg_write(hwcfg, pdata, HW_CFG); /* Enable phy clocks to the MAC */ hwcfg &= (~HW_CFG_PHY_CLK_SEL_); hwcfg |= HW_CFG_PHY_CLK_SEL_INT_PHY_; smsc911x_reg_write(hwcfg, pdata, HW_CFG); udelay(10); /* Enough time for clocks to restart */ hwcfg &= (~HW_CFG_SMI_SEL_); smsc911x_reg_write(hwcfg, pdata, HW_CFG); /* Use internal phy */ return -ENODEV; } else { SMSC_TRACE("Successfully switched to external PHY"); pdata->using_extphy = 1; } } else { SMSC_WARNING("No external PHY detected."); SMSC_WARNING("Using internal PHY instead."); /* Use internal phy */ return -ENODEV; } return 0; } /* called by phy_initialise and loopback test */ static int smsc911x_phy_reset(struct smsc911x_data *pdata) { unsigned int temp; unsigned int i = 100000; unsigned long flags; SMSC_TRACE("Performing PHY BCR Reset"); spin_lock_irqsave(&pdata->phy_lock, flags); smsc911x_phy_write(pdata, MII_BMCR, BMCR_RESET); do { udelay(10); temp = smsc911x_phy_read(pdata, MII_BMCR); } while ((i--) && (temp & BMCR_RESET)); spin_unlock_irqrestore(&pdata->phy_lock, flags); if (temp & BMCR_RESET) { SMSC_WARNING("PHY reset failed to complete."); return 0; } /* Extra delay required because the phy may not be completed with * its reset when BMCR_RESET is cleared. Specs say 256 uS is * enough delay but using 1ms here to be safe */ msleep(1); return 1; } /* Fetches a tx status out of the status fifo */ static unsigned int smsc911x_tx_get_txstatus(struct smsc911x_data *pdata) { unsigned int result = smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TSUSED_; if (result != 0) result = smsc911x_reg_read(pdata, TX_STATUS_FIFO); return result; } /* Fetches the next rx status */ static unsigned int smsc911x_rx_get_rxstatus(struct smsc911x_data *pdata) { unsigned int result = smsc911x_reg_read(pdata, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED_; if (result != 0) result = smsc911x_reg_read(pdata, RX_STATUS_FIFO); return result; } #ifdef USE_PHY_WORK_AROUND static int smsc911x_phy_check_loopbackpkt(struct smsc911x_data *pdata) { unsigned int tries; u32 wrsz; u32 rdsz; u32 bufp; for (tries = 0; tries < 10; tries++) { unsigned int txcmd_a; unsigned int txcmd_b; unsigned int status; unsigned int pktlength; unsigned int i; /* Zero-out rx packet memory */ memset(pdata->loopback_rx_pkt, 0, MIN_PACKET_SIZE); /* Write tx packet to 118 */ txcmd_a = (((unsigned int)pdata->loopback_tx_pkt) & 0x03) << 16; txcmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_; txcmd_a |= MIN_PACKET_SIZE; txcmd_b = MIN_PACKET_SIZE << 16 | MIN_PACKET_SIZE; smsc911x_reg_write(txcmd_a, pdata, TX_DATA_FIFO); smsc911x_reg_write(txcmd_b, pdata, TX_DATA_FIFO); bufp = ((u32) pdata->loopback_tx_pkt) & 0xFFFFFFFC; wrsz = MIN_PACKET_SIZE + 3; wrsz += (((u32) pdata->loopback_tx_pkt) & 0x3); wrsz >>= 2; smsc911x_tx_writefifo(pdata, (unsigned int *)bufp, wrsz); /* Wait till transmit is done */ i = 60; do { udelay(5); status = smsc911x_tx_get_txstatus(pdata); } while ((i--) && (!status)); if (!status) { SMSC_WARNING("Failed to transmit during loopback test"); continue; } if (status & TX_STS_ES_) { SMSC_WARNING("Transmit encountered errors during " "loopback test"); continue; } /* Wait till receive is done */ i = 60; do { udelay(5); status = smsc911x_rx_get_rxstatus(pdata); } while ((i--) && (!status)); if (!status) { SMSC_WARNING("Failed to receive during loopback test"); continue; } if (status & RX_STS_ES_) { SMSC_WARNING("Receive encountered errors during " "loopback test"); continue; } pktlength = ((status & 0x3FFF0000UL) >> 16); bufp = (u32)pdata->loopback_rx_pkt; rdsz = pktlength + 3; rdsz += ((u32)pdata->loopback_rx_pkt) & 0x3; rdsz >>= 2; smsc911x_rx_readfifo(pdata, (unsigned int *)bufp, rdsz); if (pktlength != (MIN_PACKET_SIZE + 4)) { SMSC_WARNING("Unexpected packet size during " "loop back test, size=%d, " "will retry", pktlength); } else { unsigned int j; int mismatch = 0; for (j = 0; j < MIN_PACKET_SIZE; j++) { if (pdata->loopback_tx_pkt[j] != pdata->loopback_rx_pkt[j]) { mismatch = 1; break; } } if (!mismatch) { SMSC_TRACE("Successfully verified " "loopback packet"); return 1; } else { SMSC_WARNING("Data miss match during " "loop back test, will retry."); } } } return 0; } static int smsc911x_phy_loopbacktest(struct smsc911x_data *pdata) { int result = 0; unsigned int i; unsigned int val; unsigned long flags; /* Initialise tx packet */ for (i = 0; i < 6; i++) { /* Use broadcast destination address */ pdata->loopback_tx_pkt[i] = (char)0xFF; } for (i = 6; i < 12; i++) { /* Use incrementing source address */ pdata->loopback_tx_pkt[i] = (char)i; } /* Set length type field */ pdata->loopback_tx_pkt[12] = 0x00; pdata->loopback_tx_pkt[13] = 0x00; for (i = 14; i < MIN_PACKET_SIZE; i++) { pdata->loopback_tx_pkt[i] = (char)i; } val = smsc911x_reg_read(pdata, HW_CFG); val &= HW_CFG_TX_FIF_SZ_; val |= HW_CFG_SF_; smsc911x_reg_write(val, pdata, HW_CFG); smsc911x_reg_write(TX_CFG_TX_ON_, pdata, TX_CFG); smsc911x_reg_write((((unsigned int)pdata->loopback_rx_pkt) & 0x03) << 8, pdata, RX_CFG); for (i = 0; i < 10; i++) { /* Set PHY to 10/FD, no ANEG, and loopback mode */ spin_lock_irqsave(&pdata->phy_lock, flags); smsc911x_phy_write(pdata, MII_BMCR, 0x4100); /* Enable MAC tx/rx, FD */ smsc911x_mac_write(pdata, MAC_CR, MAC_CR_FDPX_ | MAC_CR_TXEN_ | MAC_CR_RXEN_); spin_unlock_irqrestore(&pdata->phy_lock, flags); if (smsc911x_phy_check_loopbackpkt(pdata)) { result = 1; break; } pdata->resetcount++; /* Disable MAC rx */ spin_lock_irqsave(&pdata->phy_lock, flags); smsc911x_mac_write(pdata, MAC_CR, 0); spin_unlock_irqrestore(&pdata->phy_lock, flags); smsc911x_phy_reset(pdata); } /* Disable MAC */ spin_lock_irqsave(&pdata->phy_lock, flags); smsc911x_mac_write(pdata, MAC_CR, 0); /* Cancel PHY loopback mode */ smsc911x_phy_write(pdata, MII_BMCR, 0); spin_unlock_irqrestore(&pdata->phy_lock, flags); smsc911x_reg_write(0, pdata, TX_CFG); smsc911x_reg_write(0, pdata, RX_CFG); return result; } #endif /* USE_PHY_WORK_AROUND */ /* assumes phy_lock is held */ static void smsc911x_phy_update_flowcontrol(struct smsc911x_data *pdata) { unsigned int temp; if (pdata->mii.full_duplex) { unsigned int phy_adv; unsigned int phy_lpa; phy_adv = smsc911x_phy_read(pdata, MII_ADVERTISE); phy_lpa = smsc911x_phy_read(pdata, MII_LPA); if (phy_adv & phy_lpa & LPA_PAUSE_CAP) { /* Both ends support symmetric pause, enable * PAUSE receive and transmit */ smsc911x_mac_write(pdata, FLOW, 0xFFFF0002); temp = smsc911x_reg_read(pdata, AFC_CFG); temp |= 0xF; smsc911x_reg_write(temp, pdata, AFC_CFG); } else if (((phy_adv & ADVERTISE_PAUSE_ALL) == ADVERTISE_PAUSE_ALL) && ((phy_lpa & LPA_PAUSE_ALL) == LPA_PAUSE_ASYM)) { /* We support symmetric and asym pause, the * other end only supports asym, Enable PAUSE * receive, disable PAUSE transmit */ smsc911x_mac_write(pdata, FLOW, 0xFFFF0002); temp = smsc911x_reg_read(pdata, AFC_CFG); temp &= ~0xF; smsc911x_reg_write(temp, pdata, AFC_CFG); } else { /* Disable PAUSE receive and transmit */ smsc911x_mac_write(pdata, FLOW, 0); temp = smsc911x_reg_read(pdata, AFC_CFG); temp &= ~0xF; smsc911x_reg_write(temp, pdata, AFC_CFG); } } else { smsc911x_mac_write(pdata, FLOW, 0); temp = smsc911x_reg_read(pdata, AFC_CFG); temp |= 0xF; smsc911x_reg_write(temp, pdata, AFC_CFG); } } /* Update link mode if any thing has changed */ static void smsc911x_phy_update_linkmode(struct net_device *dev, int init) { struct smsc911x_data *pdata = netdev_priv(dev); unsigned long flags; if (mii_check_media(&pdata->mii, netif_msg_link(pdata), init)) { /* duplex state has changed */ unsigned int mac_cr; spin_lock_irqsave(&pdata->phy_lock, flags); mac_cr = smsc911x_mac_read(pdata, MAC_CR); if (pdata->mii.full_duplex) { SMSC_TRACE("configuring for full duplex mode"); mac_cr |= MAC_CR_FDPX_; } else { SMSC_TRACE("configuring for half duplex mode"); mac_cr &= ~MAC_CR_FDPX_; } smsc911x_mac_write(pdata, MAC_CR, mac_cr); smsc911x_phy_update_flowcontrol(pdata); spin_unlock_irqrestore(&pdata->phy_lock, flags); } #ifdef USE_LED1_WORK_AROUND if (netif_carrier_ok(dev)) { if ((pdata->gpio_orig_setting & GPIO_CFG_LED1_EN_) && (!pdata->using_extphy)) { /* Restore orginal GPIO configuration */ pdata->gpio_setting = pdata->gpio_orig_setting; smsc911x_reg_write(pdata->gpio_setting, pdata, GPIO_CFG); } } else { /* Check global setting that LED1 * usage is 10/100 indicator */ pdata->gpio_setting = smsc911x_reg_read(pdata, GPIO_CFG); if ((pdata->gpio_setting & GPIO_CFG_LED1_EN_) && (!pdata->using_extphy)) { /* Force 10/100 LED off, after saving * orginal GPIO configuration */ pdata->gpio_orig_setting = pdata->gpio_setting; pdata->gpio_setting &= ~GPIO_CFG_LED1_EN_; pdata->gpio_setting |= (GPIO_CFG_GPIOBUF0_ | GPIO_CFG_GPIODIR0_ | GPIO_CFG_GPIOD0_); smsc911x_reg_write(pdata->gpio_setting, pdata, GPIO_CFG); } } #endif /* USE_LED1_WORK_AROUND */ } /* Entry point for the link poller */ static void smsc911x_phy_checklink(unsigned long ptr) { struct net_device *dev = (struct net_device *)ptr; struct smsc911x_data *pdata = netdev_priv(dev); smsc911x_phy_update_linkmode(dev, 0); if (!(pdata->stop_link_poll)) { pdata->link_poll_timer.expires = jiffies + 2 * HZ; add_timer(&pdata->link_poll_timer); } else { pdata->stop_link_poll = 0; } } /* Initialises the PHY layer. Called at initialisation by open() so * interrupts are enabled */ static int smsc911x_phy_initialise(struct net_device *dev) { struct smsc911x_data *pdata = netdev_priv(dev); unsigned int phyid1 = 0; unsigned int phyid2 = 0; unsigned int temp; pdata->using_extphy = 0; switch (pdata->idrev & 0xFFFF0000) { case 0x01170000: case 0x01150000: /* External PHY supported, try to autodetect */ if (smsc911x_phy_initialise_external(pdata) < 0) { SMSC_TRACE("External PHY is not detected, using " "internal PHY instead"); pdata->mii.phy_id = 1; } break; default: SMSC_TRACE("External PHY is not supported, using internal PHY " "instead"); pdata->mii.phy_id = 1; break; } spin_lock_irq(&pdata->phy_lock); phyid1 = smsc911x_phy_read(pdata, MII_PHYSID1); phyid2 = smsc911x_phy_read(pdata, MII_PHYSID2); spin_unlock_irq(&pdata->phy_lock); if ((phyid1 == 0xFFFF) && (phyid2 == 0xFFFF)) { SMSC_WARNING("Internal PHY not detected!"); return 0; } /* Reset the phy */ if (!smsc911x_phy_reset(pdata)) { SMSC_WARNING("PHY reset failed to complete."); return 0; } #ifdef USE_PHY_WORK_AROUND if (!smsc911x_phy_loopbacktest(pdata)) { SMSC_WARNING("Failed Loop Back Test"); return 0; } else { SMSC_TRACE("Passed Loop Back Test"); } #endif /* USE_PHY_WORK_AROUND */ /* Advertise all speeds and pause capabilities */ spin_lock_irq(&pdata->phy_lock); temp = smsc911x_phy_read(pdata, MII_ADVERTISE); temp |= (ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); smsc911x_phy_write(pdata, MII_ADVERTISE, temp); pdata->mii.advertising = temp; if (!pdata->using_extphy) { /* using internal phy, enable PHY interrupts */ smsc911x_phy_read(pdata, MII_INTSTS); smsc911x_phy_write(pdata, MII_INTMSK, PHY_INTMSK_DEFAULT_); } /* begin to establish link */ smsc911x_phy_write(pdata, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART); spin_unlock_irq(&pdata->phy_lock); smsc911x_phy_update_linkmode(dev, 1); setup_timer(&pdata->link_poll_timer, smsc911x_phy_checklink, (unsigned long)dev); pdata->link_poll_timer.expires = jiffies + 2 * HZ; add_timer(&pdata->link_poll_timer); SMSC_TRACE("phy initialised succesfully"); return 1; } /* Gets the number of tx statuses in the fifo */ static unsigned int smsc911x_tx_get_txstatcount(struct smsc911x_data *pdata) { unsigned int result = (smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TSUSED_) >> 16; return result; } /* Reads tx statuses and increments counters where necessary */ static void smsc911x_tx_update_txcounters(struct smsc911x_data *pdata) { unsigned int tx_stat; while ((tx_stat = smsc911x_tx_get_txstatus(pdata)) != 0) { if (unlikely(tx_stat & 0x80000000)) { /* In this driver the packet tag is used as the packet * length. Since a packet length can never reach the * size of 0x8000, this bit is reserved. It is worth * noting that the "reserved bit" in the warning above * does not reference a hardware defined reserved bit * but rather a driver defined one. */ SMSC_WARNING("Packet tag reserved bit is high"); } else { if (unlikely(tx_stat & 0x00008000)) { pdata->stats.tx_errors++; } else { pdata->stats.tx_packets++; pdata->stats.tx_bytes += (tx_stat >> 16); } if (unlikely(tx_stat & 0x00000100)) { pdata->stats.collisions += 16; pdata->stats.tx_aborted_errors += 1; } else { pdata->stats.collisions += ((tx_stat >> 3) & 0xF); } if (unlikely(tx_stat & 0x00000800)) { pdata->stats.tx_carrier_errors += 1; } if (unlikely(tx_stat & 0x00000200)) { pdata->stats.collisions++; pdata->stats.tx_aborted_errors++; } } } } /* Increments the Rx error counters */ static void smsc911x_rx_counterrors(struct smsc911x_data *pdata, unsigned int rxstat) { int crc_err = 0; if (unlikely(rxstat & 0x00008000)) { pdata->stats.rx_errors++; if (unlikely(rxstat & 0x00000002)) { pdata->stats.rx_crc_errors++; crc_err = 1; } } if (likely(!crc_err)) { if (unlikely((rxstat & 0x00001020) == 0x00001020)) { /* Frame type indicates length, * and length error is set */ pdata->stats.rx_length_errors++; } if (rxstat & RX_STS_MCAST_) pdata->stats.multicast++; } } /* Quickly dumps bad packets */ static void smsc911x_rx_fastforward(struct smsc911x_data *pdata, unsigned int pktbytes) { unsigned int pktwords = (pktbytes + NET_IP_ALIGN + 3) >> 2; if (likely(pktwords >= 4)) { unsigned int timeout = 500; unsigned int val; smsc911x_reg_write(RX_DP_CTRL_RX_FFWD_, pdata, RX_DP_CTRL); do { udelay(1); val = smsc911x_reg_read(pdata, RX_DP_CTRL); } while (timeout-- && (val & RX_DP_CTRL_RX_FFWD_)); if (unlikely(timeout == 0)) SMSC_WARNING("Timed out waiting for RX FFWD " "to finish, RX_DP_CTRL: 0x%08X", val); } else { unsigned int temp; while (pktwords--) temp = smsc911x_reg_read(pdata, RX_DATA_FIFO); } } /* NAPI poll function */ static int smsc911x_poll(struct napi_struct *napi, int budget) { struct smsc911x_data *pdata = container_of(napi, struct smsc911x_data, napi); struct net_device *dev = pdata->netdev; int npackets = 0; while (npackets < budget) { unsigned int pktlength; unsigned int pktwords; unsigned int rxstat = smsc911x_rx_get_rxstatus(pdata); /* break out of while loop if there are no more packets waiting */ if (!rxstat) break; pktlength = ((rxstat & 0x3FFF0000) >> 16); pktwords = (pktlength + NET_IP_ALIGN + 3) >> 2; smsc911x_rx_counterrors(pdata, rxstat); if (likely((rxstat & RX_STS_ES_) == 0)) { struct sk_buff *skb; skb = dev_alloc_skb(pktlength + NET_IP_ALIGN); if (likely(skb)) { skb->data = skb->head; skb->tail = skb->head; /* Align IP on 16B boundary */ skb_reserve(skb, NET_IP_ALIGN); skb_put(skb, pktlength - 4); smsc911x_rx_readfifo(pdata, (unsigned int *)skb->head, pktwords); skb->dev = dev; skb->protocol = eth_type_trans(skb, dev); skb->ip_summed = CHECKSUM_NONE; netif_receive_skb(skb); /* Update counters */ pdata->stats.rx_packets++; pdata->stats.rx_bytes += (pktlength - 4); dev->last_rx = jiffies; npackets++; continue; } else { SMSC_WARNING("Unable to allocate sk_buff " "for rx packet, in PIO path"); pdata->stats.rx_dropped++; } } /* At this point, the packet is to be read out * of the fifo and discarded */ smsc911x_rx_fastforward(pdata, pktlength); } pdata->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP); smsc911x_reg_write(INT_STS_RSFL_, pdata, INT_STS); if (npackets < budget) { unsigned int temp; /* We processed all packets available. Tell NAPI it can * stop polling then re-enable rx interrupts */ netif_rx_complete(dev, napi); temp = smsc911x_reg_read(pdata, INT_EN); temp |= INT_EN_RSFL_EN_; smsc911x_reg_write(temp, pdata, INT_EN); } /* There are still packets waiting */ return npackets; } /* Returns hash bit number for given MAC address * Example: * 01 00 5E 00 00 01 -> returns bit number 31 */ static unsigned int smsc911x_hash(char addr[ETH_ALEN]) { unsigned int crc; unsigned int result; crc = ether_crc(ETH_ALEN, addr); result = (crc >> 26) & 0x3f; return result; } static void smsc911x_rx_multicast_update(struct smsc911x_data *pdata) { /* Performs the multicast & mac_cr update. This is called when * safe on the current hardware, and with the phy_lock held */ unsigned int mac_cr = smsc911x_mac_read(pdata, MAC_CR); mac_cr |= pdata->set_bits_mask; mac_cr &= ~(pdata->clear_bits_mask); smsc911x_mac_write(pdata, MAC_CR, mac_cr); smsc911x_mac_write(pdata, HASHH, pdata->hashhi); smsc911x_mac_write(pdata, HASHL, pdata->hashlo); SMSC_TRACE("maccr 0x%08X, HASHH 0x%08X, HASHL 0x%08X", mac_cr, pdata->hashhi, pdata->hashlo); } static void smsc911x_rx_multicast_update_workaround(struct smsc911x_data *pdata) { unsigned int mac_cr; /* This function is only called for older LAN911x devices * (revA or revB), where MAC_CR, HASHH and HASHL should not * be modified during Rx - newer devices immediately update the * registers. * * This is called from interrupt context */ spin_lock(&pdata->phy_lock); /* Check Rx has stopped */ if (smsc911x_mac_read(pdata, MAC_CR) & MAC_CR_RXEN_) SMSC_WARNING("Rx not stopped\n"); /* Perform the update - safe to do now Rx has stopped */ smsc911x_rx_multicast_update(pdata); /* Re-enable Rx */ mac_cr = smsc911x_mac_read(pdata, MAC_CR); mac_cr |= MAC_CR_RXEN_; smsc911x_mac_write(pdata, MAC_CR, mac_cr); pdata->multicast_update_pending = 0; spin_unlock(&pdata->phy_lock); } /* Sets the device MAC address to dev_addr, called with phy_lock held */ static void smsc911x_set_mac_address(struct smsc911x_data *pdata, u8 dev_addr[6]) { u32 mac_high16 = (dev_addr[5] << 8) | dev_addr[4]; u32 mac_low32 = (dev_addr[3] << 24) | (dev_addr[2] << 16) | (dev_addr[1] << 8) | dev_addr[0]; smsc911x_mac_write(pdata, ADDRH, mac_high16); smsc911x_mac_write(pdata, ADDRL, mac_low32); } static int smsc911x_open(struct net_device *dev) { struct smsc911x_data *pdata = netdev_priv(dev); unsigned int timeout; unsigned int temp; unsigned int intcfg; spin_lock_init(&pdata->phy_lock); /* Reset the LAN911x */ smsc911x_reg_write(HW_CFG_SRST_, pdata, HW_CFG); timeout = 10; do { udelay(10); temp = smsc911x_reg_read(pdata, HW_CFG); } while ((--timeout) && (temp & HW_CFG_SRST_)); if (unlikely(temp & HW_CFG_SRST_)) { SMSC_WARNING("Failed to complete reset"); return -ENODEV; } smsc911x_reg_write(0x00050000, pdata, HW_CFG); smsc911x_reg_write(0x006E3740, pdata, AFC_CFG); /* Make sure EEPROM has finished loading before setting GPIO_CFG */ timeout = 50; while ((timeout--) && (smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_)) { udelay(10); } if (unlikely(timeout == 0)) { SMSC_WARNING("Timed out waiting for EEPROM " "busy bit to clear"); } #if USE_DEBUG >= 1 smsc911x_reg_write(0x00670700, pdata, GPIO_CFG); #else smsc911x_reg_write(0x70070000, pdata, GPIO_CFG); #endif /* Initialise irqs, but leave all sources disabled */ smsc911x_reg_write(0, pdata, INT_EN); smsc911x_reg_write(0xFFFFFFFF, pdata, INT_STS); /* Set interrupt deassertion to 100uS */ intcfg = ((10 << 24) | INT_CFG_IRQ_EN_); if (pdata->irq_polarity) { SMSC_TRACE("irq polarity: active high"); intcfg |= INT_CFG_IRQ_POL_; } else { SMSC_TRACE("irq polarity: active low"); } if (pdata->irq_type) { SMSC_TRACE("irq type: push-pull"); intcfg |= INT_CFG_IRQ_TYPE_; } else { SMSC_TRACE("irq type: open drain"); } smsc911x_reg_write(intcfg, pdata, INT_CFG); SMSC_TRACE("Testing irq handler using IRQ %d", dev->irq); pdata->software_irq_signal = 0; smp_wmb(); temp = smsc911x_reg_read(pdata, INT_EN); temp |= INT_EN_SW_INT_EN_; smsc911x_reg_write(temp, pdata, INT_EN); timeout = 1000; while (timeout--) { smp_rmb(); if (pdata->software_irq_signal) break; msleep(1); } if (!pdata->software_irq_signal) { printk(KERN_WARNING "%s: ISR failed signaling test (IRQ %d)\n", dev->name, dev->irq); return -ENODEV; } SMSC_TRACE("IRQ handler passed test using IRQ %d", dev->irq); printk(KERN_INFO "%s: SMSC911x/921x identified at %#08lx, IRQ: %d\n", dev->name, (unsigned long)pdata->ioaddr, dev->irq); netif_carrier_off(dev); if (!smsc911x_phy_initialise(dev)) { SMSC_WARNING("Failed to initialize PHY"); return -ENODEV; } temp = smsc911x_reg_read(pdata, HW_CFG); temp &= HW_CFG_TX_FIF_SZ_; temp |= HW_CFG_SF_; smsc911x_reg_write(temp, pdata, HW_CFG); temp = smsc911x_reg_read(pdata, FIFO_INT); temp |= FIFO_INT_TX_AVAIL_LEVEL_; temp &= ~(FIFO_INT_RX_STS_LEVEL_); smsc911x_reg_write(temp, pdata, FIFO_INT); /* set RX Data offset to 2 bytes for alignment */ smsc911x_reg_write((2 << 8), pdata, RX_CFG); napi_enable(&pdata->napi); temp = smsc911x_reg_read(pdata, INT_EN); temp |= (INT_EN_TDFA_EN_ | INT_EN_RSFL_EN_ | INT_EN_PHY_INT_EN_); smsc911x_reg_write(temp, pdata, INT_EN); spin_lock_irq(&pdata->phy_lock); temp = smsc911x_mac_read(pdata, MAC_CR); temp |= (MAC_CR_TXEN_ | MAC_CR_RXEN_ | MAC_CR_HBDIS_); smsc911x_mac_write(pdata, MAC_CR, temp); spin_unlock_irq(&pdata->phy_lock); smsc911x_reg_write(TX_CFG_TX_ON_, pdata, TX_CFG); netif_start_queue(dev); return 0; } /* Entry point for stopping the interface */ static int smsc911x_stop(struct net_device *dev) { struct smsc911x_data *pdata = netdev_priv(dev); napi_disable(&pdata->napi); pdata->stop_link_poll = 1; del_timer_sync(&pdata->link_poll_timer); smsc911x_reg_write((smsc911x_reg_read(pdata, INT_CFG) & (~INT_CFG_IRQ_EN_)), pdata, INT_CFG); netif_stop_queue(dev); /* At this point all Rx and Tx activity is stopped */ pdata->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP); smsc911x_tx_update_txcounters(pdata); SMSC_TRACE("Interface stopped"); return 0; } /* Entry point for transmitting a packet */ static int smsc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct smsc911x_data *pdata = netdev_priv(dev); unsigned int freespace; unsigned int tx_cmd_a; unsigned int tx_cmd_b; unsigned int temp; u32 wrsz; u32 bufp; freespace = smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TDFREE_; if (unlikely(freespace < TX_FIFO_LOW_THRESHOLD)) SMSC_WARNING("Tx data fifo low, space available: %d", freespace); /* Word alignment adjustment */ tx_cmd_a = ((((unsigned int)(skb->data)) & 0x03) << 16); tx_cmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_; tx_cmd_a |= (unsigned int)skb->len; tx_cmd_b = ((unsigned int)skb->len) << 16; tx_cmd_b |= (unsigned int)skb->len; smsc911x_reg_write(tx_cmd_a, pdata, TX_DATA_FIFO); smsc911x_reg_write(tx_cmd_b, pdata, TX_DATA_FIFO); bufp = ((u32)skb->data) & 0xFFFFFFFC; wrsz = (u32)skb->len + 3; wrsz += ((u32)skb->data) & 0x3; wrsz >>= 2; smsc911x_tx_writefifo(pdata, (unsigned int *)bufp, wrsz); freespace -= (skb->len + 32); dev_kfree_skb(skb); dev->trans_start = jiffies; if (unlikely(smsc911x_tx_get_txstatcount(pdata) >= 30)) smsc911x_tx_update_txcounters(pdata); if (freespace < TX_FIFO_LOW_THRESHOLD) { netif_stop_queue(dev); temp = smsc911x_reg_read(pdata, FIFO_INT); temp &= 0x00FFFFFF; temp |= 0x32000000; smsc911x_reg_write(temp, pdata, FIFO_INT); } return NETDEV_TX_OK; } /* Entry point for getting status counters */ static struct net_device_stats *smsc911x_get_stats(struct net_device *dev) { struct smsc911x_data *pdata = netdev_priv(dev); smsc911x_tx_update_txcounters(pdata); pdata->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP); return &pdata->stats; } /* Entry point for setting addressing modes */ static void smsc911x_set_multicast_list(struct net_device *dev) { struct smsc911x_data *pdata = netdev_priv(dev); unsigned long flags; if (dev->flags & IFF_PROMISC) { /* Enabling promiscuous mode */ pdata->set_bits_mask = MAC_CR_PRMS_; pdata->clear_bits_mask = (MAC_CR_MCPAS_ | MAC_CR_HPFILT_); pdata->hashhi = 0; pdata->hashlo = 0; } else if (dev->flags & IFF_ALLMULTI) { /* Enabling all multicast mode */ pdata->set_bits_mask = MAC_CR_MCPAS_; pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_HPFILT_); pdata->hashhi = 0; pdata->hashlo = 0; } else if (dev->mc_count > 0) { /* Enabling specific multicast addresses */ unsigned int hash_high = 0; unsigned int hash_low = 0; unsigned int count = 0; struct dev_mc_list *mc_list = dev->mc_list; pdata->set_bits_mask = MAC_CR_HPFILT_; pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_MCPAS_); while (mc_list) { count++; if ((mc_list->dmi_addrlen) == ETH_ALEN) { unsigned int bitnum = smsc911x_hash(mc_list->dmi_addr); unsigned int mask = 0x01 << (bitnum & 0x1F); if (bitnum & 0x20) hash_high |= mask; else hash_low |= mask; } else { SMSC_WARNING("dmi_addrlen != 6"); } mc_list = mc_list->next; } if (count != (unsigned int)dev->mc_count) SMSC_WARNING("mc_count != dev->mc_count"); pdata->hashhi = hash_high; pdata->hashlo = hash_low; } else { /* Enabling local MAC address only */ pdata->set_bits_mask = 0; pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_); pdata->hashhi = 0; pdata->hashlo = 0; } spin_lock_irqsave(&pdata->phy_lock, flags); if (pdata->generation <= 1) { /* Older hardware revision - cannot change these flags while * receiving data */ if (!pdata->multicast_update_pending) { unsigned int temp; SMSC_TRACE("scheduling mcast update"); pdata->multicast_update_pending = 1; /* Request the hardware to stop, then perform the * update when we get an RX_STOP interrupt */ smsc911x_reg_write(INT_STS_RXSTOP_INT_, pdata, INT_STS); temp = smsc911x_reg_read(pdata, INT_EN); temp |= INT_EN_RXSTOP_INT_EN_; smsc911x_reg_write(temp, pdata, INT_EN); temp = smsc911x_mac_read(pdata, MAC_CR); temp &= ~(MAC_CR_RXEN_); smsc911x_mac_write(pdata, MAC_CR, temp); } else { /* There is another update pending, this should now * use the newer values */ } } else { /* Newer hardware revision - can write immediately */ smsc911x_rx_multicast_update(pdata); } spin_unlock_irqrestore(&pdata->phy_lock, flags); } static irqreturn_t smsc911x_irqhandler(int irq, void *dev_id) { struct net_device *dev = dev_id; struct smsc911x_data *pdata = netdev_priv(dev); unsigned int intsts; unsigned int inten; unsigned int temp; int serviced = IRQ_NONE; intsts = smsc911x_reg_read(pdata, INT_STS); inten = smsc911x_reg_read(pdata, INT_EN); if (unlikely(intsts & inten & INT_STS_SW_INT_)) { temp = smsc911x_reg_read(pdata, INT_EN); temp &= (~INT_EN_SW_INT_EN_); smsc911x_reg_write(temp, pdata, INT_EN); smsc911x_reg_write(INT_STS_SW_INT_, pdata, INT_STS); pdata->software_irq_signal = 1; smp_wmb(); serviced = IRQ_HANDLED; } if (unlikely(intsts & inten & INT_STS_RXSTOP_INT_)) { /* Called when there is a multicast update scheduled and * it is now safe to complete the update */ SMSC_TRACE("RX Stop interrupt"); temp = smsc911x_reg_read(pdata, INT_EN); temp &= (~INT_EN_RXSTOP_INT_EN_); smsc911x_reg_write(temp, pdata, INT_EN); smsc911x_reg_write(INT_STS_RXSTOP_INT_, pdata, INT_STS); smsc911x_rx_multicast_update_workaround(pdata); serviced = IRQ_HANDLED; } if (intsts & inten & INT_STS_TDFA_) { temp = smsc911x_reg_read(pdata, FIFO_INT); temp |= FIFO_INT_TX_AVAIL_LEVEL_; smsc911x_reg_write(temp, pdata, FIFO_INT); smsc911x_reg_write(INT_STS_TDFA_, pdata, INT_STS); netif_wake_queue(dev); serviced = IRQ_HANDLED; } if (unlikely(intsts & inten & INT_STS_RXE_)) { smsc911x_reg_write(INT_STS_RXE_, pdata, INT_STS); serviced = IRQ_HANDLED; } if (likely(intsts & inten & INT_STS_RSFL_)) { /* Disable Rx interrupts and schedule NAPI poll */ temp = smsc911x_reg_read(pdata, INT_EN); temp &= (~INT_EN_RSFL_EN_); smsc911x_reg_write(temp, pdata, INT_EN); netif_rx_schedule(dev, &pdata->napi); serviced = IRQ_HANDLED; } if (unlikely(intsts & inten & INT_STS_PHY_INT_)) { smsc911x_reg_write(INT_STS_PHY_INT_, pdata, INT_STS); spin_lock(&pdata->phy_lock); temp = smsc911x_phy_read(pdata, MII_INTSTS); spin_unlock(&pdata->phy_lock); SMSC_TRACE("PHY interrupt, sts 0x%04X", (u16)temp); smsc911x_phy_update_linkmode(dev, 0); serviced = IRQ_HANDLED; } return serviced; } #ifdef CONFIG_NET_POLL_CONTROLLER void smsc911x_poll_controller(struct net_device *dev) { disable_irq(dev->irq); smsc911x_irqhandler(0, dev); enable_irq(dev->irq); } #endif /* CONFIG_NET_POLL_CONTROLLER */ /* Standard ioctls for mii-tool */ static int smsc911x_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { struct smsc911x_data *pdata = netdev_priv(dev); struct mii_ioctl_data *data = if_mii(ifr); unsigned long flags; SMSC_TRACE("ioctl cmd 0x%x", cmd); switch (cmd) { case SIOCGMIIPHY: data->phy_id = pdata->mii.phy_id; return 0; case SIOCGMIIREG: spin_lock_irqsave(&pdata->phy_lock, flags); data->val_out = smsc911x_phy_read(pdata, data->reg_num); spin_unlock_irqrestore(&pdata->phy_lock, flags); return 0; case SIOCSMIIREG: spin_lock_irqsave(&pdata->phy_lock, flags); smsc911x_phy_write(pdata, data->reg_num, data->val_in); spin_unlock_irqrestore(&pdata->phy_lock, flags); return 0; } SMSC_TRACE("unsupported ioctl cmd"); return -1; } static int smsc911x_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd) { struct smsc911x_data *pdata = netdev_priv(dev); cmd->maxtxpkt = 1; cmd->maxrxpkt = 1; return mii_ethtool_gset(&pdata->mii, cmd); } static int smsc911x_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd) { struct smsc911x_data *pdata = netdev_priv(dev); return mii_ethtool_sset(&pdata->mii, cmd); } static void smsc911x_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { strncpy(info->driver, SMSC_CHIPNAME, sizeof(info->driver)); strncpy(info->version, SMSC_DRV_VERSION, sizeof(info->version)); strncpy(info->bus_info, dev->dev.bus_id, sizeof(info->bus_info)); } static int smsc911x_ethtool_nwayreset(struct net_device *dev) { struct smsc911x_data *pdata = netdev_priv(dev); return mii_nway_restart(&pdata->mii); } static u32 smsc911x_ethtool_getmsglevel(struct net_device *dev) { struct smsc911x_data *pdata = netdev_priv(dev); return pdata->msg_enable; } static void smsc911x_ethtool_setmsglevel(struct net_device *dev, u32 level) { struct smsc911x_data *pdata = netdev_priv(dev); pdata->msg_enable = level; } static int smsc911x_ethtool_getregslen(struct net_device *dev) { return (((E2P_CMD - ID_REV) / 4 + 1) + (WUCSR - MAC_CR) + 1 + 32) * sizeof(u32); } static void smsc911x_ethtool_getregs(struct net_device *dev, struct ethtool_regs *regs, void *buf) { struct smsc911x_data *pdata = netdev_priv(dev); unsigned long flags; unsigned int i; unsigned int j = 0; u32 *data = buf; regs->version = pdata->idrev; for (i = ID_REV; i <= E2P_CMD; i += (sizeof(u32))) data[j++] = smsc911x_reg_read(pdata, i); spin_lock_irqsave(&pdata->phy_lock, flags); for (i = MAC_CR; i <= WUCSR; i++) data[j++] = smsc911x_mac_read(pdata, i); for (i = 0; i <= 31; i++) data[j++] = smsc911x_phy_read(pdata, i); spin_unlock_irqrestore(&pdata->phy_lock, flags); } static void smsc911x_eeprom_enable_access(struct smsc911x_data *pdata) { unsigned int temp = smsc911x_reg_read(pdata, GPIO_CFG); temp &= ~GPIO_CFG_EEPR_EN_; smsc911x_reg_write(temp, pdata, GPIO_CFG); msleep(1); } static int smsc911x_eeprom_send_cmd(struct smsc911x_data *pdata, u32 op) { int timeout = 100; u32 e2cmd; SMSC_TRACE("op 0x%08x", op); if (smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_) { SMSC_WARNING("Busy at start"); return -EBUSY; } e2cmd = op | E2P_CMD_EPC_BUSY_; smsc911x_reg_write(e2cmd, pdata, E2P_CMD); do { msleep(1); e2cmd = smsc911x_reg_read(pdata, E2P_CMD); } while ((e2cmd & E2P_CMD_EPC_BUSY_) && (timeout--)); if (!timeout) { SMSC_TRACE("TIMED OUT"); return -EAGAIN; } if (e2cmd & E2P_CMD_EPC_TIMEOUT_) { SMSC_TRACE("Error occured during eeprom operation"); return -EINVAL; } return 0; } static int smsc911x_eeprom_read_location(struct smsc911x_data *pdata, u8 address, u8 *data) { u32 op = E2P_CMD_EPC_CMD_READ_ | address; int ret; SMSC_TRACE("address 0x%x", address); ret = smsc911x_eeprom_send_cmd(pdata, op); if (!ret) data[address] = smsc911x_reg_read(pdata, E2P_DATA); return ret; } static int smsc911x_eeprom_write_location(struct smsc911x_data *pdata, u8 address, u8 data) { u32 op = E2P_CMD_EPC_CMD_ERASE_ | address; int ret; SMSC_TRACE("address 0x%x, data 0x%x", address, data); ret = smsc911x_eeprom_send_cmd(pdata, op); if (!ret) { op = E2P_CMD_EPC_CMD_WRITE_ | address; smsc911x_reg_write((u32)data, pdata, E2P_DATA); ret = smsc911x_eeprom_send_cmd(pdata, op); } return ret; } static int smsc911x_ethtool_get_eeprom_len(struct net_device *dev) { return SMSC911X_EEPROM_SIZE; } static int smsc911x_ethtool_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data) { struct smsc911x_data *pdata = netdev_priv(dev); u8 eeprom_data[SMSC911X_EEPROM_SIZE]; int len; int i; smsc911x_eeprom_enable_access(pdata); len = min(eeprom->len, SMSC911X_EEPROM_SIZE); for (i = 0; i < len; i++) { int ret = smsc911x_eeprom_read_location(pdata, i, eeprom_data); if (ret < 0) { eeprom->len = 0; return ret; } } memcpy(data, &eeprom_data[eeprom->offset], len); eeprom->len = len; return 0; } static int smsc911x_ethtool_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data) { int ret; struct smsc911x_data *pdata = netdev_priv(dev); smsc911x_eeprom_enable_access(pdata); smsc911x_eeprom_send_cmd(pdata, E2P_CMD_EPC_CMD_EWEN_); ret = smsc911x_eeprom_write_location(pdata, eeprom->offset, *data); smsc911x_eeprom_send_cmd(pdata, E2P_CMD_EPC_CMD_EWDS_); /* Single byte write, according to man page */ eeprom->len = 1; return ret; } static struct ethtool_ops smsc911x_ethtool_ops = { .get_settings = smsc911x_ethtool_getsettings, .set_settings = smsc911x_ethtool_setsettings, .get_link = ethtool_op_get_link, .get_drvinfo = smsc911x_ethtool_getdrvinfo, .nway_reset = smsc911x_ethtool_nwayreset, .get_msglevel = smsc911x_ethtool_getmsglevel, .set_msglevel = smsc911x_ethtool_setmsglevel, .get_regs_len = smsc911x_ethtool_getregslen, .get_regs = smsc911x_ethtool_getregs, .get_eeprom_len = smsc911x_ethtool_get_eeprom_len, .get_eeprom = smsc911x_ethtool_get_eeprom, .set_eeprom = smsc911x_ethtool_set_eeprom, }; /* Initializing private device structures */ static int smsc911x_init(struct net_device *dev) { u32 mac_high16; u32 mac_low32; struct smsc911x_data *pdata = netdev_priv(dev); SMSC_TRACE("Driver Parameters:"); SMSC_TRACE("LAN base: 0x%08lX", (unsigned long)pdata->ioaddr); SMSC_TRACE("IRQ: %d", dev->irq); SMSC_TRACE("PHY will be autodetected."); if (pdata->ioaddr == 0) { SMSC_WARNING("pdata->ioaddr: 0x00000000"); return -ENODEV; } /* Default generation to zero (all workarounds apply) */ pdata->generation = 0; pdata->idrev = smsc911x_reg_read(pdata, ID_REV); if (((pdata->idrev >> 16) & 0xFFFF) == (pdata->idrev & 0xFFFF)) { SMSC_WARNING("idrev top 16 bits equal to bottom 16 bits, " "idrev: 0x%08X", pdata->idrev); SMSC_TRACE("This may mean the chip is set for 32 bit while " "the bus is reading as 16 bit"); return -ENODEV; } switch (pdata->idrev & 0xFFFF0000) { case 0x01180000: switch (pdata->idrev & 0x0000FFFFUL) { case 0UL: SMSC_TRACE("LAN9118 Beacon identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 0; break; case 1UL: SMSC_TRACE ("LAN9118 Concord A0 identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 1; break; case 2UL: SMSC_TRACE ("LAN9118 Concord A1 identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 2; break; default: SMSC_TRACE ("LAN9118 Concord A1 identified (NEW), idrev: 0x%08X", pdata->idrev); pdata->generation = 2; break; } break; case 0x01170000: switch (pdata->idrev & 0x0000FFFFUL) { case 0UL: SMSC_TRACE("LAN9117 Beacon identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 0; break; case 1UL: SMSC_TRACE ("LAN9117 Concord A0 identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 1; break; case 2UL: SMSC_TRACE ("LAN9117 Concord A1 identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 2; break; default: SMSC_TRACE ("LAN9117 Concord A1 identified (NEW), idrev: 0x%08X", pdata->idrev); pdata->generation = 2; break; } break; case 0x01160000: switch (pdata->idrev & 0x0000FFFFUL) { case 0UL: SMSC_WARNING("LAN911x not identified, idrev: 0x%08X", pdata->idrev); return -ENODEV; case 1UL: SMSC_TRACE ("LAN9116 Concord A0 identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 1; break; case 2UL: SMSC_TRACE ("LAN9116 Concord A1 identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 2; break; default: SMSC_TRACE ("LAN9116 Concord A1 identified (NEW), idrev: 0x%08X", pdata->idrev); pdata->generation = 2; break; } break; case 0x01150000: switch (pdata->idrev & 0x0000FFFFUL) { case 0UL: SMSC_WARNING("LAN911x not identified, idrev: 0x%08X", pdata->idrev); return -ENODEV; case 1UL: SMSC_TRACE ("LAN9115 Concord A0 identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 1; break; case 2UL: SMSC_TRACE ("LAN9115 Concord A1 identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 2; break; default: SMSC_TRACE ("LAN9115 Concord A1 identified (NEW), idrev: 0x%08X", pdata->idrev); pdata->generation = 2; break; } break; case 0x118A0000UL: switch (pdata->idrev & 0x0000FFFFUL) { case 0UL: SMSC_TRACE ("LAN9218 Boylston identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 3; break; default: SMSC_TRACE ("LAN9218 Boylston identified (NEW), idrev: 0x%08X", pdata->idrev); pdata->generation = 3; break; } break; case 0x117A0000UL: switch (pdata->idrev & 0x0000FFFFUL) { case 0UL: SMSC_TRACE ("LAN9217 Boylston identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 3; break; default: SMSC_TRACE ("LAN9217 Boylston identified (NEW), idrev: 0x%08X", pdata->idrev); pdata->generation = 3; break; } break; case 0x116A0000UL: switch (pdata->idrev & 0x0000FFFFUL) { case 0UL: SMSC_TRACE ("LAN9216 Boylston identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 3; break; default: SMSC_TRACE ("LAN9216 Boylston identified (NEW), idrev: 0x%08X", pdata->idrev); pdata->generation = 3; break; } break; case 0x115A0000UL: switch (pdata->idrev & 0x0000FFFFUL) { case 0UL: SMSC_TRACE ("LAN9215 Boylston identified, idrev: 0x%08X", pdata->idrev); pdata->generation = 3; break; default: SMSC_TRACE ("LAN9215 Boylston identified (NEW), idrev: 0x%08X", pdata->idrev); pdata->generation = 3; break; } break; default: SMSC_WARNING("LAN911x not identified, idrev: 0x%08X", pdata->idrev); return -ENODEV; } if (pdata->generation == 0) SMSC_WARNING("This driver is not intended " "for this chip revision"); ether_setup(dev); dev->open = smsc911x_open; dev->stop = smsc911x_stop; dev->hard_start_xmit = smsc911x_hard_start_xmit; dev->get_stats = smsc911x_get_stats; dev->set_multicast_list = smsc911x_set_multicast_list; dev->flags |= IFF_MULTICAST; dev->do_ioctl = smsc911x_do_ioctl; netif_napi_add(dev, &pdata->napi, smsc911x_poll, 64); dev->ethtool_ops = &smsc911x_ethtool_ops; /* Check if mac address has been specified when bringing interface up */ if (is_valid_ether_addr(dev->dev_addr)) { smsc911x_set_mac_address(pdata, dev->dev_addr); SMSC_TRACE("MAC Address is specified by configuration"); } else { /* Try reading mac address from device. if EEPROM is present * it will already have been set */ u32 mac_high16 = smsc911x_mac_read(pdata, ADDRH); u32 mac_low32 = smsc911x_mac_read(pdata, ADDRL); dev->dev_addr[0] = (u8)(mac_low32); dev->dev_addr[1] = (u8)(mac_low32 >> 8); dev->dev_addr[2] = (u8)(mac_low32 >> 16); dev->dev_addr[3] = (u8)(mac_low32 >> 24); dev->dev_addr[4] = (u8)(mac_high16); dev->dev_addr[5] = (u8)(mac_high16 >> 8); if (is_valid_ether_addr(dev->dev_addr)) { /* eeprom values are valid so use them */ SMSC_TRACE("Mac Address is read from LAN911x EEPROM"); } else { /* eeprom values are invalid, generate random MAC */ random_ether_addr(dev->dev_addr); smsc911x_set_mac_address(pdata, dev->dev_addr); SMSC_TRACE("MAC Address is set to random_ether_addr"); } } printk(KERN_INFO "%s: SMSC911x MAC Address: %02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2], dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]); #ifdef CONFIG_NET_POLL_CONTROLLER dev->poll_controller = smsc911x_poll_controller; #endif /* CONFIG_NET_POLL_CONTROLLER */ pdata->mii.phy_id_mask = 0x1f; pdata->mii.reg_num_mask = 0x1f; pdata->mii.force_media = 0; pdata->mii.full_duplex = 0; pdata->mii.dev = dev; pdata->mii.mdio_read = smsc911x_mdio_read; pdata->mii.mdio_write = smsc911x_mdio_write; pdata->msg_enable = NETIF_MSG_LINK; return 0; } static int smsc911x_drv_remove(struct platform_device *pdev) { struct net_device *dev; struct smsc911x_data *pdata; struct resource *res; dev = platform_get_drvdata(pdev); BUG_ON(!dev); pdata = netdev_priv(dev); BUG_ON(!pdata); BUG_ON(!pdata->ioaddr); SMSC_TRACE("Stopping driver."); platform_set_drvdata(pdev, NULL); unregister_netdev(dev); free_irq(dev->irq, dev); res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smsc911x-memory"); if (!res) platform_get_resource(pdev, IORESOURCE_MEM, 0); release_mem_region(res->start, res->end - res->start); iounmap(pdata->ioaddr); free_netdev(dev); return 0; } static int smsc911x_drv_probe(struct platform_device *pdev) { struct net_device *dev; struct smsc911x_data *pdata; struct resource *res; unsigned int intcfg = 0; int res_size; int retval; printk(KERN_INFO "%s: Driver version %s.\n", SMSC_CHIPNAME, SMSC_DRV_VERSION); res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smsc911x-memory"); if (!res) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { printk(KERN_WARNING "%s: Could not allocate resource.\n", SMSC_CHIPNAME); retval = -ENODEV; goto out_0; } res_size = res->end - res->start; if (!request_mem_region(res->start, res_size, SMSC_CHIPNAME)) { retval = -EBUSY; goto out_0; } dev = alloc_etherdev(sizeof(struct smsc911x_data)); if (!dev) { printk(KERN_WARNING "%s: Could not allocate device.\n", SMSC_CHIPNAME); retval = -ENOMEM; goto out_release_io_1; } SET_NETDEV_DEV(dev, &pdev->dev); pdata = netdev_priv(dev); pdata->netdev = dev; dev->irq = platform_get_irq(pdev, 0); pdata->ioaddr = ioremap_nocache(res->start, res_size); /* copy config parameters across if present, otherwise pdata * defaults to zeros */ if (pdev->dev.platform_data) { struct smsc911x_platform_config *config = pdev->dev.platform_data; pdata->irq_polarity = config->irq_polarity; pdata->irq_type = config->irq_type; } if (pdata->ioaddr == NULL) { SMSC_WARNING("Error smsc911x base address invalid"); retval = -ENOMEM; goto out_free_netdev_2; } if ((retval = smsc911x_init(dev)) < 0) goto out_unmap_io_3; /* configure irq polarity and type before connecting isr */ if (pdata->irq_polarity) intcfg |= INT_CFG_IRQ_POL_; if (pdata->irq_type) intcfg |= INT_CFG_IRQ_TYPE_; smsc911x_reg_write(intcfg, pdata, INT_CFG); retval = request_irq(dev->irq, smsc911x_irqhandler, IRQF_DISABLED, SMSC_CHIPNAME, dev); if (retval) { SMSC_WARNING("Unable to claim requested irq: %d", dev->irq); goto out_unmap_io_3; } platform_set_drvdata(pdev, dev); retval = register_netdev(dev); if (retval) { SMSC_WARNING("Error %i registering device", retval); goto out_unset_drvdata_4; } else { SMSC_TRACE("Network interface: \"%s\"", dev->name); } return 0; out_unset_drvdata_4: platform_set_drvdata(pdev, NULL); free_irq(dev->irq, dev); out_unmap_io_3: iounmap(pdata->ioaddr); out_free_netdev_2: free_netdev(dev); out_release_io_1: release_mem_region(res->start, res->end - res->start); out_0: return retval; } static struct platform_driver smsc911x_driver = { .probe = smsc911x_drv_probe, .remove = smsc911x_drv_remove, .driver = { .name = SMSC_CHIPNAME, }, }; /* Entry point for loading the module */ static int __init smsc911x_init_module(void) { return platform_driver_register(&smsc911x_driver); } /* entry point for unloading the module */ static void __exit smsc911x_cleanup_module(void) { platform_driver_unregister(&smsc911x_driver); } module_init(smsc911x_init_module); module_exit(smsc911x_cleanup_module);