diff options
Diffstat (limited to 'drivers/net/smsc911x.c')
| -rw-r--r-- | drivers/net/smsc911x.c | 2343 |
1 files changed, 0 insertions, 2343 deletions
diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c deleted file mode 100644 index c90ddb61cc5..00000000000 --- a/drivers/net/smsc911x.c +++ /dev/null @@ -1,2343 +0,0 @@ -/*************************************************************************** - * - * Copyright (C) 2004-2008 SMSC - * Copyright (C) 2005-2008 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 - * LAN9210, LAN9211 - * LAN9220, LAN9221 - * LAN89218 - * - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/crc32.h> -#include <linux/delay.h> -#include <linux/errno.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/ioport.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/netdevice.h> -#include <linux/platform_device.h> -#include <linux/sched.h> -#include <linux/timer.h> -#include <linux/bug.h> -#include <linux/bitops.h> -#include <linux/irq.h> -#include <linux/io.h> -#include <linux/swab.h> -#include <linux/phy.h> -#include <linux/smsc911x.h> -#include <linux/device.h> -#include "smsc911x.h" - -#define SMSC_CHIPNAME "smsc911x" -#define SMSC_MDIONAME "smsc911x-mdio" -#define SMSC_DRV_VERSION "2008-10-21" - -MODULE_LICENSE("GPL"); -MODULE_VERSION(SMSC_DRV_VERSION); -MODULE_ALIAS("platform:smsc911x"); - -#if USE_DEBUG > 0 -static int debug = 16; -#else -static int debug = 3; -#endif - -module_param(debug, int, 0); -MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); - -struct smsc911x_data; - -struct smsc911x_ops { - u32 (*reg_read)(struct smsc911x_data *pdata, u32 reg); - void (*reg_write)(struct smsc911x_data *pdata, u32 reg, u32 val); - void (*rx_readfifo)(struct smsc911x_data *pdata, - unsigned int *buf, unsigned int wordcount); - void (*tx_writefifo)(struct smsc911x_data *pdata, - unsigned int *buf, unsigned int wordcount); -}; - -struct smsc911x_data { - void __iomem *ioaddr; - - unsigned int idrev; - - /* used to decide which workarounds apply */ - unsigned int generation; - - /* device configuration (copied from platform_data during probe) */ - struct smsc911x_platform_config config; - - /* This needs to be acquired before calling any of below: - * smsc911x_mac_read(), smsc911x_mac_write() - */ - spinlock_t mac_lock; - - /* spinlock to ensure register accesses are serialised */ - spinlock_t dev_lock; - - struct phy_device *phy_dev; - struct mii_bus *mii_bus; - int phy_irq[PHY_MAX_ADDR]; - unsigned int using_extphy; - int last_duplex; - int last_carrier; - - u32 msg_enable; - unsigned int gpio_setting; - unsigned int gpio_orig_setting; - struct net_device *dev; - struct napi_struct napi; - - 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; - - /* register access functions */ - const struct smsc911x_ops *ops; -}; - -/* Easy access to information */ -#define __smsc_shift(pdata, reg) ((reg) << ((pdata)->config.shift)) - -static inline u32 __smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg) -{ - if (pdata->config.flags & SMSC911X_USE_32BIT) - return readl(pdata->ioaddr + reg); - - if (pdata->config.flags & SMSC911X_USE_16BIT) - return ((readw(pdata->ioaddr + reg) & 0xFFFF) | - ((readw(pdata->ioaddr + reg + 2) & 0xFFFF) << 16)); - - BUG(); - return 0; -} - -static inline u32 -__smsc911x_reg_read_shift(struct smsc911x_data *pdata, u32 reg) -{ - if (pdata->config.flags & SMSC911X_USE_32BIT) - return readl(pdata->ioaddr + __smsc_shift(pdata, reg)); - - if (pdata->config.flags & SMSC911X_USE_16BIT) - return (readw(pdata->ioaddr + - __smsc_shift(pdata, reg)) & 0xFFFF) | - ((readw(pdata->ioaddr + - __smsc_shift(pdata, reg + 2)) & 0xFFFF) << 16); - - BUG(); - return 0; -} - -static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg) -{ - u32 data; - unsigned long flags; - - spin_lock_irqsave(&pdata->dev_lock, flags); - data = pdata->ops->reg_read(pdata, reg); - spin_unlock_irqrestore(&pdata->dev_lock, flags); - - return data; -} - -static inline void __smsc911x_reg_write(struct smsc911x_data *pdata, u32 reg, - u32 val) -{ - if (pdata->config.flags & SMSC911X_USE_32BIT) { - writel(val, pdata->ioaddr + reg); - return; - } - - if (pdata->config.flags & SMSC911X_USE_16BIT) { - writew(val & 0xFFFF, pdata->ioaddr + reg); - writew((val >> 16) & 0xFFFF, pdata->ioaddr + reg + 2); - return; - } - - BUG(); -} - -static inline void -__smsc911x_reg_write_shift(struct smsc911x_data *pdata, u32 reg, u32 val) -{ - if (pdata->config.flags & SMSC911X_USE_32BIT) { - writel(val, pdata->ioaddr + __smsc_shift(pdata, reg)); - return; - } - - if (pdata->config.flags & SMSC911X_USE_16BIT) { - writew(val & 0xFFFF, - pdata->ioaddr + __smsc_shift(pdata, reg)); - writew((val >> 16) & 0xFFFF, - pdata->ioaddr + __smsc_shift(pdata, reg + 2)); - return; - } - - BUG(); -} - -static inline void smsc911x_reg_write(struct smsc911x_data *pdata, u32 reg, - u32 val) -{ - unsigned long flags; - - spin_lock_irqsave(&pdata->dev_lock, flags); - pdata->ops->reg_write(pdata, reg, val); - spin_unlock_irqrestore(&pdata->dev_lock, flags); -} - -/* Writes a packet to the TX_DATA_FIFO */ -static inline void -smsc911x_tx_writefifo(struct smsc911x_data *pdata, unsigned int *buf, - unsigned int wordcount) -{ - unsigned long flags; - - spin_lock_irqsave(&pdata->dev_lock, flags); - - if (pdata->config.flags & SMSC911X_SWAP_FIFO) { - while (wordcount--) - __smsc911x_reg_write(pdata, TX_DATA_FIFO, - swab32(*buf++)); - goto out; - } - - if (pdata->config.flags & SMSC911X_USE_32BIT) { - writesl(pdata->ioaddr + TX_DATA_FIFO, buf, wordcount); - goto out; - } - - if (pdata->config.flags & SMSC911X_USE_16BIT) { - while (wordcount--) - __smsc911x_reg_write(pdata, TX_DATA_FIFO, *buf++); - goto out; - } - - BUG(); -out: - spin_unlock_irqrestore(&pdata->dev_lock, flags); -} - -/* Writes a packet to the TX_DATA_FIFO - shifted version */ -static inline void -smsc911x_tx_writefifo_shift(struct smsc911x_data *pdata, unsigned int *buf, - unsigned int wordcount) -{ - unsigned long flags; - - spin_lock_irqsave(&pdata->dev_lock, flags); - - if (pdata->config.flags & SMSC911X_SWAP_FIFO) { - while (wordcount--) - __smsc911x_reg_write_shift(pdata, TX_DATA_FIFO, - swab32(*buf++)); - goto out; - } - - if (pdata->config.flags & SMSC911X_USE_32BIT) { - writesl(pdata->ioaddr + __smsc_shift(pdata, - TX_DATA_FIFO), buf, wordcount); - goto out; - } - - if (pdata->config.flags & SMSC911X_USE_16BIT) { - while (wordcount--) - __smsc911x_reg_write_shift(pdata, - TX_DATA_FIFO, *buf++); - goto out; - } - - BUG(); -out: - spin_unlock_irqrestore(&pdata->dev_lock, flags); -} - -/* 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) -{ - unsigned long flags; - - spin_lock_irqsave(&pdata->dev_lock, flags); - - if (pdata->config.flags & SMSC911X_SWAP_FIFO) { - while (wordcount--) - *buf++ = swab32(__smsc911x_reg_read(pdata, - RX_DATA_FIFO)); - goto out; - } - - if (pdata->config.flags & SMSC911X_USE_32BIT) { - readsl(pdata->ioaddr + RX_DATA_FIFO, buf, wordcount); - goto out; - } - - if (pdata->config.flags & SMSC911X_USE_16BIT) { - while (wordcount--) - *buf++ = __smsc911x_reg_read(pdata, RX_DATA_FIFO); - goto out; - } - - BUG(); -out: - spin_unlock_irqrestore(&pdata->dev_lock, flags); -} - -/* Reads a packet out of the RX_DATA_FIFO - shifted version */ -static inline void -smsc911x_rx_readfifo_shift(struct smsc911x_data *pdata, unsigned int *buf, - unsigned int wordcount) -{ - unsigned long flags; - - spin_lock_irqsave(&pdata->dev_lock, flags); - - if (pdata->config.flags & SMSC911X_SWAP_FIFO) { - while (wordcount--) - *buf++ = swab32(__smsc911x_reg_read_shift(pdata, - RX_DATA_FIFO)); - goto out; - } - - if (pdata->config.flags & SMSC911X_USE_32BIT) { - readsl(pdata->ioaddr + __smsc_shift(pdata, - RX_DATA_FIFO), buf, wordcount); - goto out; - } - - if (pdata->config.flags & SMSC911X_USE_16BIT) { - while (wordcount--) - *buf++ = __smsc911x_reg_read_shift(pdata, - RX_DATA_FIFO); - goto out; - } - - BUG(); -out: - spin_unlock_irqrestore(&pdata->dev_lock, flags); -} - -/* waits for MAC not busy, with timeout. Only called by smsc911x_mac_read - * and smsc911x_mac_write, so assumes mac_lock is held */ -static int smsc911x_mac_complete(struct smsc911x_data *pdata) -{ - int i; - u32 val; - - SMSC_ASSERT_MAC_LOCK(pdata); - - for (i = 0; i < 40; i++) { - val = smsc911x_reg_read(pdata, MAC_CSR_CMD); - if (!(val & MAC_CSR_CMD_CSR_BUSY_)) - return 0; - } - SMSC_WARN(pdata, hw, "Timed out waiting for MAC not BUSY. " - "MAC_CSR_CMD: 0x%08X", val); - return -EIO; -} - -/* Fetches a MAC register value. Assumes mac_lock is acquired */ -static u32 smsc911x_mac_read(struct smsc911x_data *pdata, unsigned int offset) -{ - unsigned int temp; - - SMSC_ASSERT_MAC_LOCK(pdata); - - temp = smsc911x_reg_read(pdata, MAC_CSR_CMD); - if (unlikely(temp & MAC_CSR_CMD_CSR_BUSY_)) { - SMSC_WARN(pdata, hw, "MAC busy at entry"); - return 0xFFFFFFFF; - } - - /* Send the MAC cmd */ - smsc911x_reg_write(pdata, MAC_CSR_CMD, ((offset & 0xFF) | - MAC_CSR_CMD_CSR_BUSY_ | MAC_CSR_CMD_R_NOT_W_)); - - /* Workaround for hardware read-after-write restriction */ - temp = smsc911x_reg_read(pdata, BYTE_TEST); - - /* Wait for the read to complete */ - if (likely(smsc911x_mac_complete(pdata) == 0)) - return smsc911x_reg_read(pdata, MAC_CSR_DATA); - - SMSC_WARN(pdata, hw, "MAC busy after read"); - return 0xFFFFFFFF; -} - -/* Set a mac register, mac_lock must be acquired before calling */ -static void smsc911x_mac_write(struct smsc911x_data *pdata, - unsigned int offset, u32 val) -{ - unsigned int temp; - - SMSC_ASSERT_MAC_LOCK(pdata); - - temp = smsc911x_reg_read(pdata, MAC_CSR_CMD); - if (unlikely(temp & MAC_CSR_CMD_CSR_BUSY_)) { - SMSC_WARN(pdata, hw, - "smsc911x_mac_write failed, MAC busy at entry"); - return; - } - - /* Send data to write */ - smsc911x_reg_write(pdata, MAC_CSR_DATA, val); - - /* Write the actual data */ - smsc911x_reg_write(pdata, MAC_CSR_CMD, ((offset & 0xFF) | - MAC_CSR_CMD_CSR_BUSY_)); - - /* Workaround for hardware read-after-write restriction */ - temp = smsc911x_reg_read(pdata, BYTE_TEST); - - /* Wait for the write to complete */ - if (likely(smsc911x_mac_complete(pdata) == 0)) - return; - - SMSC_WARN(pdata, hw, "smsc911x_mac_write failed, MAC busy after write"); -} - -/* Get a phy register */ -static int smsc911x_mii_read(struct mii_bus *bus, int phyaddr, int regidx) -{ - struct smsc911x_data *pdata = (struct smsc911x_data *)bus->priv; - unsigned long flags; - unsigned int addr; - int i, reg; - - spin_lock_irqsave(&pdata->mac_lock, flags); - - /* Confirm MII not busy */ - if (unlikely(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) { - SMSC_WARN(pdata, hw, "MII is busy in smsc911x_mii_read???"); - reg = -EIO; - goto out; - } - - /* Set the address, index & direction (read from PHY) */ - addr = ((phyaddr & 0x1F) << 11) | ((regidx & 0x1F) << 6); - smsc911x_mac_write(pdata, MII_ACC, addr); - - /* Wait for read to complete w/ timeout */ - for (i = 0; i < 100; i++) - if (!(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) { - reg = smsc911x_mac_read(pdata, MII_DATA); - goto out; - } - - SMSC_WARN(pdata, hw, "Timed out waiting for MII read to finish"); - reg = -EIO; - -out: - spin_unlock_irqrestore(&pdata->mac_lock, flags); - return reg; -} - -/* Set a phy register */ -static int smsc911x_mii_write(struct mii_bus *bus, int phyaddr, int regidx, - u16 val) -{ - struct smsc911x_data *pdata = (struct smsc911x_data *)bus->priv; - unsigned long flags; - unsigned int addr; - int i, reg; - - spin_lock_irqsave(&pdata->mac_lock, flags); - - /* Confirm MII not busy */ - if (unlikely(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) { - SMSC_WARN(pdata, hw, "MII is busy in smsc911x_mii_write???"); - reg = -EIO; - goto out; - } - - /* Put the data to write in the MAC */ - smsc911x_mac_write(pdata, MII_DATA, val); - - /* Set the address, index & direction (write to PHY) */ - addr = ((phyaddr & 0x1F) << 11) | ((regidx & 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++) - if (!(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) { - reg = 0; - goto out; - } - - SMSC_WARN(pdata, hw, "Timed out waiting for MII write to finish"); - reg = -EIO; - -out: - spin_unlock_irqrestore(&pdata->mac_lock, flags); - return reg; -} - -/* Switch to external phy. Assumes tx and rx are stopped. */ -static void smsc911x_phy_enable_external(struct smsc911x_data *pdata) -{ - unsigned int hwcfg = smsc911x_reg_read(pdata, HW_CFG); - - /* Disable phy clocks to the MAC */ - hwcfg &= (~HW_CFG_PHY_CLK_SEL_); - hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_; - smsc911x_reg_write(pdata, HW_CFG, hwcfg); - udelay(10); /* Enough time for clocks to stop */ - - /* Switch to external phy */ - hwcfg |= HW_CFG_EXT_PHY_EN_; - smsc911x_reg_write(pdata, HW_CFG, hwcfg); - - /* Enable phy clocks to the MAC */ - hwcfg &= (~HW_CFG_PHY_CLK_SEL_); - hwcfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_; - smsc911x_reg_write(pdata, HW_CFG, hwcfg); - udelay(10); /* Enough time for clocks to restart */ - - hwcfg |= HW_CFG_SMI_SEL_; - smsc911x_reg_write(pdata, HW_CFG, hwcfg); -} - -/* Autodetects and enables external phy if present on supported chips. - * autodetection can be overridden by specifying SMSC911X_FORCE_INTERNAL_PHY - * or SMSC911X_FORCE_EXTERNAL_PHY in the platform_data flags. */ -static void smsc911x_phy_initialise_external(struct smsc911x_data *pdata) -{ - unsigned int hwcfg = smsc911x_reg_read(pdata, HW_CFG); - - if (pdata->config.flags & SMSC911X_FORCE_INTERNAL_PHY) { - SMSC_TRACE(pdata, hw, "Forcing internal PHY"); - pdata->using_extphy = 0; - } else if (pdata->config.flags & SMSC911X_FORCE_EXTERNAL_PHY) { - SMSC_TRACE(pdata, hw, "Forcing external PHY"); - smsc911x_phy_enable_external(pdata); - pdata->using_extphy = 1; - } else if (hwcfg & HW_CFG_EXT_PHY_DET_) { - SMSC_TRACE(pdata, hw, - "HW_CFG EXT_PHY_DET set, using external PHY"); - smsc911x_phy_enable_external(pdata); - pdata->using_extphy = 1; - } else { - SMSC_TRACE(pdata, hw, - "HW_CFG EXT_PHY_DET clear, using internal PHY"); - pdata->using_extphy = 0; - } -} - -/* 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; - ulong 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 = (u32)((ulong)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(pdata, TX_DATA_FIFO, txcmd_a); - smsc911x_reg_write(pdata, TX_DATA_FIFO, txcmd_b); - - bufp = (ulong)pdata->loopback_tx_pkt & (~0x3); - wrsz = MIN_PACKET_SIZE + 3; - wrsz += (u32)((ulong)pdata->loopback_tx_pkt & 0x3); - wrsz >>= 2; - - pdata->ops->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_WARN(pdata, hw, - "Failed to transmit during loopback test"); - continue; - } - if (status & TX_STS_ES_) { - SMSC_WARN(pdata, hw, - "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_WARN(pdata, hw, - "Failed to receive during loopback test"); - continue; - } - if (status & RX_STS_ES_) { - SMSC_WARN(pdata, hw, - "Receive encountered errors during loopback test"); - continue; - } - - pktlength = ((status & 0x3FFF0000UL) >> 16); - bufp = (ulong)pdata->loopback_rx_pkt; - rdsz = pktlength + 3; - rdsz += (u32)((ulong)pdata->loopback_rx_pkt & 0x3); - rdsz >>= 2; - - pdata->ops->rx_readfifo(pdata, (unsigned int *)bufp, rdsz); - - if (pktlength != (MIN_PACKET_SIZE + 4)) { - SMSC_WARN(pdata, hw, "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(pdata, hw, "Successfully verified " - "loopback packet"); - return 0; - } else { - SMSC_WARN(pdata, hw, "Data mismatch " - "during loop back test, will retry"); - } - } - } - - return -EIO; -} - -static int smsc911x_phy_reset(struct smsc911x_data *pdata) -{ - struct phy_device *phy_dev = pdata->phy_dev; - unsigned int temp; - unsigned int i = 100000; - - BUG_ON(!phy_dev); - BUG_ON(!phy_dev->bus); - - SMSC_TRACE(pdata, hw, "Performing PHY BCR Reset"); - smsc911x_mii_write(phy_dev->bus, phy_dev->addr, MII_BMCR, BMCR_RESET); - do { - msleep(1); - temp = smsc911x_mii_read(phy_dev->bus, phy_dev->addr, - MII_BMCR); - } while ((i--) && (temp & BMCR_RESET)); - - if (temp & BMCR_RESET) { - SMSC_WARN(pdata, hw, "PHY reset failed to complete"); - return -EIO; - } - /* 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 0; -} - -static int smsc911x_phy_loopbacktest(struct net_device *dev) -{ - struct smsc911x_data *pdata = netdev_priv(dev); - struct phy_device *phy_dev = pdata->phy_dev; - int result = -EIO; - unsigned int i, val; - unsigned long flags; - - /* Initialise tx packet using broadcast destination address */ - memset(pdata->loopback_tx_pkt, 0xff, ETH_ALEN); - - /* Use incrementing source address */ - for (i = 6; i < 12; i++) - 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(pdata, HW_CFG, val); - - smsc911x_reg_write(pdata, TX_CFG, TX_CFG_TX_ON_); - smsc911x_reg_write(pdata, RX_CFG, - (u32)((ulong)pdata->loopback_rx_pkt & 0x03) << 8); - - for (i = 0; i < 10; i++) { - /* Set PHY to 10/FD, no ANEG, and loopback mode */ - smsc911x_mii_write(phy_dev->bus, phy_dev->addr, MII_BMCR, - BMCR_LOOPBACK | BMCR_FULLDPLX); - - /* Enable MAC tx/rx, FD */ - spin_lock_irqsave(&pdata->mac_lock, flags); - smsc911x_mac_write(pdata, MAC_CR, MAC_CR_FDPX_ - | MAC_CR_TXEN_ | MAC_CR_RXEN_); - spin_unlock_irqrestore(&pdata->mac_lock, flags); - - if (smsc911x_phy_check_loopbackpkt(pdata) == 0) { - result = 0; - break; - } - pdata->resetcount++; - - /* Disable MAC rx */ - spin_lock_irqsave(&pdata->mac_lock, flags); - smsc911x_mac_write(pdata, MAC_CR, 0); - spin_unlock_irqrestore(&pdata->mac_lock, flags); - - smsc911x_phy_reset(pdata); - } - - /* Disable MAC */ - spin_lock_irqsave(&pdata->mac_lock, flags); - smsc911x_mac_write(pdata, MAC_CR, 0); - spin_unlock_irqrestore(&pdata->mac_lock, flags); - - /* Cancel PHY loopback mode */ - smsc911x_mii_write(phy_dev->bus, phy_dev->addr, MII_BMCR, 0); - - smsc911x_reg_write(pdata, TX_CFG, 0); - smsc911x_reg_write(pdata, RX_CFG, 0); - - return result; -} -#endif /* USE_PHY_WORK_AROUND */ - -static void smsc911x_phy_update_flowcontrol(struct smsc911x_data *pdata) -{ - struct phy_device *phy_dev = pdata->phy_dev; - u32 afc = smsc911x_reg_read(pdata, AFC_CFG); - u32 flow; - unsigned long flags; - - if (phy_dev->duplex == DUPLEX_FULL) { - u16 lcladv = phy_read(phy_dev, MII_ADVERTISE); - u16 rmtadv = phy_read(phy_dev, MII_LPA); - u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); - - if (cap & FLOW_CTRL_RX) - flow = 0xFFFF0002; - else - flow = 0; - - if (cap & FLOW_CTRL_TX) - afc |= 0xF; - else - afc &= ~0xF; - - SMSC_TRACE(pdata, hw, "rx pause %s, tx pause %s", - (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), - (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); - } else { - SMSC_TRACE(pdata, hw, "half duplex"); - flow = 0; - afc |= 0xF; - } - - spin_lock_irqsave(&pdata->mac_lock, flags); - smsc911x_mac_write(pdata, FLOW, flow); - spin_unlock_irqrestore(&pdata->mac_lock, flags); - - smsc911x_reg_write(pdata, AFC_CFG, afc); -} - -/* Update link mode if anything has changed. Called periodically when the - * PHY is in polling mode, even if nothing has changed. */ -static void smsc911x_phy_adjust_link(struct net_device *dev) -{ - struct smsc911x_data *pdata = netdev_priv(dev); - struct phy_device *phy_dev = pdata->phy_dev; - unsigned long flags; - int carrier; - - if (phy_dev->duplex != pdata->last_duplex) { - unsigned int mac_cr; - SMSC_TRACE(pdata, hw, "duplex state has changed"); - - spin_lock_irqsave(&pdata->mac_lock, flags); - mac_cr = smsc911x_mac_read(pdata, MAC_CR); - if (phy_dev->duplex) { - SMSC_TRACE(pdata, hw, - "configuring for full duplex mode"); - mac_cr |= MAC_CR_FDPX_; - } else { - SMSC_TRACE(pdata, hw, - "configuring for half duplex mode"); - mac_cr &= ~MAC_CR_FDPX_; - } - smsc911x_mac_write(pdata, MAC_CR, mac_cr); - spin_unlock_irqrestore(&pdata->mac_lock, flags); - - smsc911x_phy_update_flowcontrol(pdata); - pdata->last_duplex = phy_dev->duplex; - } - - carrier = netif_carrier_ok(dev); - if (carrier != pdata->last_carrier) { - SMSC_TRACE(pdata, hw, "carrier state has changed"); - if (carrier) { - SMSC_TRACE(pdata, hw, "configuring for carrier OK"); - if ((pdata->gpio_orig_setting & GPIO_CFG_LED1_EN_) && - (!pdata->using_extphy)) { - /* Restore original GPIO configuration */ - pdata->gpio_setting = pdata->gpio_orig_setting; - smsc911x_reg_write(pdata, GPIO_CFG, - pdata->gpio_setting); - } - } else { - SMSC_TRACE(pdata, hw, "configuring for no carrier"); - /* 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 - * original 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_CFG, - pdata->gpio_setting); - } - } - pdata->last_carrier = carrier; - } -} - -static int smsc911x_mii_probe(struct net_device *dev) -{ - struct smsc911x_data *pdata = netdev_priv(dev); - struct phy_device *phydev = NULL; - int ret; - - /* find the first phy */ - phydev = phy_find_first(pdata->mii_bus); - if (!phydev) { - netdev_err(dev, "no PHY found\n"); - return -ENODEV; - } - - SMSC_TRACE(pdata, probe, "PHY: addr %d, phy_id 0x%08X", - phydev->addr, phydev->phy_id); - - ret = phy_connect_direct(dev, phydev, - &smsc911x_phy_adjust_link, 0, - pdata->config.phy_interface); - - if (ret) { - netdev_err(dev, "Could not attach to PHY\n"); - return ret; - } - - netdev_info(dev, - "attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", - phydev->drv->name, dev_name(&phydev->dev), phydev->irq); - - /* mask with MAC supported features */ - phydev->supported &= (PHY_BASIC_FEATURES | SUPPORTED_Pause | - SUPPORTED_Asym_Pause); - phydev->advertising = phydev->supported; - - pdata->phy_dev = phydev; - pdata->last_duplex = -1; - pdata->last_carrier = -1; - -#ifdef USE_PHY_WORK_AROUND - if (smsc911x_phy_loopbacktest(dev) < 0) { - SMSC_WARN(pdata, hw, "Failed Loop Back Test"); - return -ENODEV; - } - SMSC_TRACE(pdata, hw, "Passed Loop Back Test"); -#endif /* USE_PHY_WORK_AROUND */ - - SMSC_TRACE(pdata, hw, "phy initialised successfully"); - return 0; -} - -static int __devinit smsc911x_mii_init(struct platform_device *pdev, - struct net_device *dev) -{ - struct smsc911x_data *pdata = netdev_priv(dev); - int err = -ENXIO, i; - - pdata->mii_bus = mdiobus_alloc(); - if (!pdata->mii_bus) { - err = -ENOMEM; - goto err_out_1; - } - - pdata->mii_bus->name = SMSC_MDIONAME; - snprintf(pdata->mii_bus->id, MII_BUS_ID_SIZE, "%x", pdev->id); - pdata->mii_bus->priv = pdata; - pdata->mii_bus->read = smsc911x_mii_read; - pdata->mii_bus->write = smsc911x_mii_write; - pdata->mii_bus->irq = pdata->phy_irq; - for (i = 0; i < PHY_MAX_ADDR; ++i) - pdata->mii_bus->irq[i] = PHY_POLL; - - pdata->mii_bus->parent = &pdev->dev; - - switch (pdata->idrev & 0xFFFF0000) { - case 0x01170000: - case 0x01150000: - case 0x117A0000: - case 0x115A0000: - /* External PHY supported, try to autodetect */ - smsc911x_phy_initialise_external(pdata); - break; - default: - SMSC_TRACE(pdata, hw, "External PHY is not supported, " - "using internal PHY"); - pdata->using_extphy = 0; - break; - } - - if (!pdata->using_extphy) { - /* Mask all PHYs except ID 1 (internal) */ - pdata->mii_bus->phy_mask = ~(1 << 1); - } - - if (mdiobus_register(pdata->mii_bus)) { - SMSC_WARN(pdata, probe, "Error registering mii bus"); - goto err_out_free_bus_2; - } - - if (smsc911x_mii_probe(dev) < 0) { - SMSC_WARN(pdata, probe, "Error registering mii bus"); - goto err_out_unregister_bus_3; - } - - return 0; - -err_out_unregister_bus_3: - mdiobus_unregister(pdata->mii_bus); -err_out_free_bus_2: - mdiobus_free(pdata->mii_bus); -err_out_1: - return err; -} - -/* Gets the number of tx statuses in the fifo */ -static unsigned int smsc911x_tx_get_txstatcount(struct smsc911x_data *pdata) -{ - return (smsc911x_reg_read(pdata, TX_FIFO_INF) - & TX_FIFO_INF_TSUSED_) >> 16; -} - -/* Reads tx statuses and increments counters where necessary */ -static void smsc911x_tx_update_txcounters(struct net_device *dev) -{ - struct smsc911x_data *pdata = netdev_priv(dev); - 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_WARN(pdata, hw, "Packet tag reserved bit is high"); - } else { - if (unlikely(tx_stat & TX_STS_ES_)) { - dev->stats.tx_errors++; - } else { - dev->stats.tx_packets++; - dev->stats.tx_bytes += (tx_stat >> 16); - } - if (unlikely(tx_stat & TX_STS_EXCESS_COL_)) { - dev->stats.collisions += 16; - dev->stats.tx_aborted_errors += 1; - } else { - dev->stats.collisions += - ((tx_stat >> 3) & 0xF); - } - if (unlikely(tx_stat & TX_STS_LOST_CARRIER_)) - dev->stats.tx_carrier_errors += 1; - if (unlikely(tx_stat & TX_STS_LATE_COL_)) { - dev->stats.collisions++; - dev->stats.tx_aborted_errors++; - } - } - } -} - -/* Increments the Rx error counters */ -static void -smsc911x_rx_counterrors(struct net_device *dev, unsigned int rxstat) -{ - int crc_err = 0; - - if (unlikely(rxstat & RX_STS_ES_)) { - dev->stats.rx_errors++; - if (unlikely(rxstat & RX_STS_CRC_ERR_)) { - dev->stats.rx_crc_errors++; - crc_err = 1; - } - } - if (likely(!crc_err)) { - if (unlikely((rxstat & RX_STS_FRAME_TYPE_) && - (rxstat & RX_STS_LENGTH_ERR_))) - dev->stats.rx_length_errors++; - if (rxstat & RX_STS_MCAST_) - dev->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(pdata, RX_DP_CTRL, RX_DP_CTRL_RX_FFWD_); - do { - udelay(1); - val = smsc911x_reg_read(pdata, RX_DP_CTRL); - } while ((val & RX_DP_CTRL_RX_FFWD_) && --timeout); - - if (unlikely(timeout == 0)) - SMSC_WARN(pdata, hw, "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->dev; - int npackets = 0; - - while (npackets < budget) { - unsigned int pktlength; - unsigned int pktwords; - struct sk_buff *skb; - unsigned int rxstat = smsc911x_rx_get_rxstatus(pdata); - - if (!rxstat) { - unsigned int temp; - /* We processed all packets available. Tell NAPI it can - * stop polling then re-enable rx interrupts */ - smsc911x_reg_write(pdata, INT_STS, INT_STS_RSFL_); - napi_complete(napi); - temp = smsc911x_reg_read(pdata, INT_EN); - temp |= INT_EN_RSFL_EN_; - smsc911x_reg_write(pdata, INT_EN, temp); - break; - } - - /* Count packet for NAPI scheduling, even if it has an error. - * Error packets still require cycles to discard */ - npackets++; - - pktlength = ((rxstat & 0x3FFF0000) >> 16); - pktwords = (pktlength + NET_IP_ALIGN + 3) >> 2; - smsc911x_rx_counterrors(dev, rxstat); - - if (unlikely(rxstat & RX_STS_ES_)) { - SMSC_WARN(pdata, rx_err, - "Discarding packet with error bit set"); - /* Packet has an error, discard it and continue with - * the next */ - smsc911x_rx_fastforward(pdata, pktwords); - dev->stats.rx_dropped++; - continue; - } - - skb = netdev_alloc_skb(dev, pktlength + NET_IP_ALIGN); - if (unlikely(!skb)) { - SMSC_WARN(pdata, rx_err, - "Unable to allocate skb for rx packet"); - /* Drop the packet and stop this polling iteration */ - smsc911x_rx_fastforward(pdata, pktwords); - dev->stats.rx_dropped++; - break; - } - - skb->data = skb->head; - skb_reset_tail_pointer(skb); - - /* Align IP on 16B boundary */ - skb_reserve(skb, NET_IP_ALIGN); - skb_put(skb, pktlength - 4); - pdata->ops->rx_readfifo(pdata, - (unsigned int *)skb->head, pktwords); - skb->protocol = eth_type_trans(skb, dev); - skb_checksum_none_assert(skb); - netif_receive_skb(skb); - - /* Update counters */ - dev->stats.rx_packets++; - dev->stats.rx_bytes += (pktlength - 4); - } - - /* Return total received packets */ - 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]) -{ - return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f; -} - -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 mac_lock held */ - unsigned int mac_cr; - - SMSC_ASSERT_MAC_LOCK(pdata); - - 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(pdata, hw, "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->mac_lock); - - /* Check Rx has stopped */ - if (smsc911x_mac_read(pdata, MAC_CR) & MAC_CR_RXEN_) - SMSC_WARN(pdata, drv, "Rx not stopped"); - - /* 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->mac_lock); -} - -static int smsc911x_soft_reset(struct smsc911x_data *pdata) -{ - unsigned int timeout; - unsigned int temp; - - /* Reset the LAN911x */ - smsc911x_reg_write(pdata, HW_CFG, HW_CFG_SRST_); - 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_WARN(pdata, drv, "Failed to complete reset"); - return -EIO; - } - return 0; -} - -/* Sets the device MAC address to dev_addr, called with mac_lock held */ -static void -smsc911x_set_hw_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]; - - SMSC_ASSERT_MAC_LOCK(pdata); - - 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; - - /* if the phy is not yet registered, retry later*/ - if (!pdata->phy_dev) { - SMSC_WARN(pdata, hw, "phy_dev is NULL"); - return -EAGAIN; - } - - if (!is_valid_ether_addr(dev->dev_addr)) { - SMSC_WARN(pdata, hw, "dev_addr is not a valid MAC address"); - return -EADDRNOTAVAIL; - } - - /* Reset the LAN911x */ - if (smsc911x_soft_reset(pdata)) { - SMSC_WARN(pdata, hw, "soft reset failed"); - return -EIO; - } - - smsc911x_reg_write(pdata, HW_CFG, 0x00050000); - smsc911x_reg_write(pdata, AFC_CFG, 0x006E3740); - - /* Increase the legal frame size of VLAN tagged frames to 1522 bytes */ - spin_lock_irq(&pdata->mac_lock); - smsc911x_mac_write(pdata, VLAN1, ETH_P_8021Q); - spin_unlock_irq(&pdata->mac_lock); - - /* Make sure EEPROM has finished loading before setting GPIO_CFG */ - timeout = 50; - while ((smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_) && - --timeout) { - udelay(10); - } - - if (unlikely(timeout == 0)) - SMSC_WARN(pdata, ifup, - "Timed out waiting for EEPROM busy bit to clear"); - - smsc911x_reg_write(pdata, GPIO_CFG, 0x70070000); - - /* The soft reset above cleared the device's MAC address, - * restore it from local copy (set in probe) */ - spin_lock_irq(&pdata->mac_lock); - smsc911x_set_hw_mac_address(pdata, dev->dev_addr); - spin_unlock_irq(&pdata->mac_lock); - - /* Initialise irqs, but leave all sources disabled */ - smsc911x_reg_write(pdata, INT_EN, 0); - smsc911x_reg_write(pdata, INT_STS, 0xFFFFFFFF); - - /* Set interrupt deassertion to 100uS */ - intcfg = ((10 << 24) | INT_CFG_IRQ_EN_); - - if (pdata->config.irq_polarity) { - SMSC_TRACE(pdata, ifup, "irq polarity: active high"); - intcfg |= INT_CFG_IRQ_POL_; - } else { - SMSC_TRACE(pdata, ifup, "irq polarity: active low"); - } - - if (pdata->config.irq_type) { - SMSC_TRACE(pdata, ifup, "irq type: push-pull"); - intcfg |= INT_CFG_IRQ_TYPE_; - } else { - SMSC_TRACE(pdata, ifup, "irq type: open drain"); - } - - smsc911x_reg_write(pdata, INT_CFG, intcfg); - - SMSC_TRACE(pdata, ifup, "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(pdata, INT_EN, temp); - - timeout = 1000; - while (timeout--) { - if (pdata->software_irq_signal) - break; - msleep(1); - } - - if (!pdata->software_irq_signal) { - netdev_warn(dev, "ISR failed signaling test (IRQ %d)\n", - dev->irq); - return -ENODEV; - } - SMSC_TRACE(pdata, ifup, "IRQ handler passed test using IRQ %d", - dev->irq); - - netdev_info(dev, "SMSC911x/921x identified at %#08lx, IRQ: %d\n", - (unsigned long)pdata->ioaddr, dev->irq); - - /* Reset the last known duplex and carrier */ - pdata->last_duplex = -1; - pdata->last_carrier = -1; - - /* Bring the PHY up */ - phy_start(pdata->phy_dev); - - temp = smsc911x_reg_read(pdata, HW_CFG); - /* Preserve TX FIFO size and external PHY configuration */ - temp &= (HW_CFG_TX_FIF_SZ_|0x00000FFF); - temp |= HW_CFG_SF_; - smsc911x_reg_write(pdata, HW_CFG, temp); - - temp = smsc911x_reg_read(pdata, FIFO_INT); - temp |= FIFO_INT_TX_AVAIL_LEVEL_; - temp &= ~(FIFO_INT_RX_STS_LEVEL_); - smsc911x_reg_write(pdata, FIFO_INT, temp); - - /* set RX Data offset to 2 bytes for alignment */ - smsc911x_reg_write(pdata, RX_CFG, (2 << 8)); - - /* enable NAPI polling before enabling RX interrupts */ - napi_enable(&pdata->napi); - - temp = smsc911x_reg_read(pdata, INT_EN); - temp |= (INT_EN_TDFA_EN_ | INT_EN_RSFL_EN_ | INT_EN_RXSTOP_INT_EN_); - smsc911x_reg_write(pdata, INT_EN, temp); - - spin_lock_irq(&pdata->mac_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->mac_lock); - - smsc911x_reg_write(pdata, TX_CFG, TX_CFG_TX_ON_); - - 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); - unsigned int temp; - - /* Disable all device interrupts */ - temp = smsc911x_reg_read(pdata, INT_CFG); - temp &= ~INT_CFG_IRQ_EN_; - smsc911x_reg_write(pdata, INT_CFG, temp); - - /* Stop Tx and Rx polling */ - netif_stop_queue(dev); - napi_disable(&pdata->napi); - - /* At this point all Rx and Tx activity is stopped */ - dev->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP); - smsc911x_tx_update_txcounters(dev); - - /* Bring the PHY down */ - if (pdata->phy_dev) - phy_stop(pdata->phy_dev); - - SMSC_TRACE(pdata, ifdown, "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; - ulong bufp; - - freespace = smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TDFREE_; - - if (unlikely(freespace < TX_FIFO_LOW_THRESHOLD)) - SMSC_WARN(pdata, tx_err, - "Tx data fifo low, space available: %d", freespace); - - /* Word alignment adjustment */ - tx_cmd_a = (u32)((ulong)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(pdata, TX_DATA_FIFO, tx_cmd_a); - smsc911x_reg_write(pdata, TX_DATA_FIFO, tx_cmd_b); - - bufp = (ulong)skb->data & (~0x3); - wrsz = (u32)skb->len + 3; - wrsz += (u32)((ulong)skb->data & 0x3); - wrsz >>= 2; - - pdata->ops->tx_writefifo(pdata, (unsigned int *)bufp, wrsz); - freespace -= (skb->len + 32); - skb_tx_timestamp(skb); - dev_kfree_skb(skb); - - if (unlikely(smsc911x_tx_get_txstatcount(pdata) >= 30)) - smsc911x_tx_update_txcounters(dev); - - if (freespace < TX_FIFO_LOW_THRESHOLD) { - netif_stop_queue(dev); - temp = smsc911x_reg_read(pdata, FIFO_INT); - temp &= 0x00FFFFFF; - temp |= 0x32000000; - smsc911x_reg_write(pdata, FIFO_INT, temp); - } - - 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(dev); - dev->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP); - return &dev->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 (!netdev_mc_empty(dev)) { - /* Enabling specific multicast addresses */ - unsigned int hash_high = 0; - unsigned int hash_low = 0; - struct netdev_hw_addr *ha; - - pdata->set_bits_mask = MAC_CR_HPFILT_; - pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_MCPAS_); - - netdev_for_each_mc_addr(ha, dev) { - unsigned int bitnum = smsc911x_hash(ha->addr); - unsigned int mask = 0x01 << (bitnum & 0x1F); - - if (bitnum & 0x20) - hash_high |= mask; - else - hash_low |= mask; - } - - 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->mac_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(pdata, hw, "scheduling mcast update"); - pdata->multicast_update_pending = 1; - - /* Request the hardware to stop, then perform the - * update when we get an RX_STOP interrupt */ - 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->mac_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); - u32 intsts = smsc911x_reg_read(pdata, INT_STS); - u32 inten = smsc911x_reg_read(pdata, INT_EN); - int serviced = IRQ_NONE; - u32 temp; - - if (unlikely(intsts & inten & INT_STS_SW_INT_)) { - temp = smsc911x_reg_read(pdata, INT_EN); - temp &= (~INT_EN_SW_INT_EN_); - smsc911x_reg_write(pdata, INT_EN, temp); - smsc911x_reg_write(pdata, INT_STS, INT_STS_SW_INT_); - 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(pdata, intr, "RX Stop interrupt"); - smsc911x_reg_write(pdata, INT_STS, INT_STS_RXSTOP_INT_); - if (pdata->multicast_update_pending) - 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(pdata, FIFO_INT, temp); - smsc911x_reg_write(pdata, INT_STS, INT_STS_TDFA_); - netif_wake_queue(dev); - serviced = IRQ_HANDLED; - } - - if (unlikely(intsts & inten & INT_STS_RXE_)) { - SMSC_TRACE(pdata, intr, "RX Error interrupt"); - smsc911x_reg_write(pdata, INT_STS, INT_STS_RXE_); - serviced = IRQ_HANDLED; - } - - if (likely(intsts & inten & INT_STS_RSFL_)) { - if (likely(napi_schedule_prep(&pdata->napi))) { - /* Disable Rx interrupts */ - temp = smsc911x_reg_read(pdata, INT_EN); - temp &= (~INT_EN_RSFL_EN_); - smsc911x_reg_write(pdata, INT_EN, temp); - /* Schedule a NAPI poll */ - __napi_schedule(&pdata->napi); - } else { - SMSC_WARN(pdata, rx_err, "napi_schedule_prep failed"); - } - serviced = IRQ_HANDLED; - } - - return serviced; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static 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 */ - -static int smsc911x_set_mac_address(struct net_device *dev, void *p) -{ - struct smsc911x_data *pdata = netdev_priv(dev); - struct sockaddr *addr = p; - - /* On older hardware revisions we cannot change the mac address - * registers while receiving data. Newer devices can safely change - * this at any time. */ - if (pdata->generation <= 1 && netif_running(dev)) - return -EBUSY; - - if (!is_valid_ether_addr(addr->sa_data)) - return -EADDRNOTAVAIL; - - memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); - - spin_lock_irq(&pdata->mac_lock); - smsc911x_set_hw_mac_address(pdata, dev->dev_addr); - spin_unlock_irq(&pdata->mac_lock); - - netdev_info(dev, "MAC Address: %pM\n", dev->dev_addr); - - return 0; -} - -/* 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); - - if (!netif_running(dev) || !pdata->phy_dev) - return -EINVAL; - - return phy_mii_ioctl(pdata->phy_dev, ifr, cmd); -} - -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 phy_ethtool_gset(pdata->phy_dev, cmd); -} - -static int -smsc911x_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct smsc911x_data *pdata = netdev_priv(dev); - - return phy_ethtool_sset(pdata->phy_dev, cmd); -} - -static void smsc911x_ethtool_getdrvinfo(struct net_device *dev, - struct ethtool_drvinfo *info) -{ - strlcpy(info->driver, SMSC_CHIPNAME, sizeof(info->driver)); - strlcpy(info->version, SMSC_DRV_VERSION, sizeof(info->version)); - strlcpy(info->bus_info, dev_name(dev->dev.parent), - sizeof(info->bus_info)); -} - -static int smsc911x_ethtool_nwayreset(struct net_device *dev) -{ - struct smsc911x_data *pdata = netdev_priv(dev); - - return phy_start_aneg(pdata->phy_dev); -} - -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_DATA - 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); - struct phy_device *phy_dev = pdata->phy_dev; - unsigned long flags; - unsigned int i; - unsigned int j = 0; - u32 *data = buf; - - regs->version = pdata->idrev; - for (i = ID_REV; i <= E2P_DATA; i += (sizeof(u32))) - data[j++] = smsc911x_reg_read(pdata, i); - - for (i = MAC_CR; i <= WUCSR; i++) { - spin_lock_irqsave(&pdata->mac_lock, flags); - data[j++] = smsc911x_mac_read(pdata, i); - spin_unlock_irqrestore(&pdata->mac_lock, flags); - } - - for (i = 0; i <= 31; i++) - data[j++] = smsc911x_mii_read(phy_dev->bus, phy_dev->addr, i); -} - -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(pdata, GPIO_CFG, temp); - msleep(1); -} - -static int smsc911x_eeprom_send_cmd(struct smsc911x_data *pdata, u32 op) -{ - int timeout = 100; - u32 e2cmd; - - SMSC_TRACE(pdata, drv, "op 0x%08x", op); - if (smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_) { - SMSC_WARN(pdata, drv, "Busy at start"); - return -EBUSY; - } - - e2cmd = op | E2P_CMD_EPC_BUSY_; - smsc911x_reg_write(pdata, E2P_CMD, e2cmd); - - do { - msleep(1); - e2cmd = smsc911x_reg_read(pdata, E2P_CMD); - } while ((e2cmd & E2P_CMD_EPC_BUSY_) && (--timeout)); - - if (!timeout) { - SMSC_TRACE(pdata, drv, "TIMED OUT"); - return -EAGAIN; - } - - if (e2cmd & E2P_CMD_EPC_TIMEOUT_) { - SMSC_TRACE(pdata, drv, "Error occurred 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(pdata, drv, "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; - u32 temp; - int ret; - - SMSC_TRACE(pdata, drv, "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(pdata, E2P_DATA, (u32)data); - - /* Workaround for hardware read-after-write restriction */ - temp = smsc911x_reg_read(pdata, BYTE_TEST); - - 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 const 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, -}; - -static const struct net_device_ops smsc911x_netdev_ops = { - .ndo_open = smsc911x_open, - .ndo_stop = smsc911x_stop, - .ndo_start_xmit = smsc911x_hard_start_xmit, - .ndo_get_stats = smsc911x_get_stats, - .ndo_set_multicast_list = smsc911x_set_multicast_list, - .ndo_do_ioctl = smsc911x_do_ioctl, - .ndo_change_mtu = eth_change_mtu, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = smsc911x_set_mac_address, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = smsc911x_poll_controller, -#endif -}; - -/* copies the current mac address from hardware to dev->dev_addr */ -static void __devinit smsc911x_read_mac_address(struct net_device *dev) -{ - struct smsc911x_data *pdata = netdev_priv(dev); - 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); -} - -/* Initializing private device structures, only called from probe */ -static int __devinit smsc911x_init(struct net_device *dev) -{ - struct smsc911x_data *pdata = netdev_priv(dev); - unsigned int byte_test; - - SMSC_TRACE(pdata, probe, "Driver Parameters:"); - SMSC_TRACE(pdata, probe, "LAN base: 0x%08lX", - (unsigned long)pdata->ioaddr); - SMSC_TRACE(pdata, probe, "IRQ: %d", dev->irq); - SMSC_TRACE(pdata, probe, "PHY will be autodetected."); - - spin_lock_init(&pdata->dev_lock); - spin_lock_init(&pdata->mac_lock); - - if (pdata->ioaddr == 0) { - SMSC_WARN(pdata, probe, "pdata->ioaddr: 0x00000000"); - return -ENODEV; - } - - /* Check byte ordering */ - byte_test = smsc911x_reg_read(pdata, BYTE_TEST); - SMSC_TRACE(pdata, probe, "BYTE_TEST: 0x%08X", byte_test); - if (byte_test == 0x43218765) { - SMSC_TRACE(pdata, probe, "BYTE_TEST looks swapped, " - "applying WORD_SWAP"); - smsc911x_reg_write(pdata, WORD_SWAP, 0xffffffff); - - /* 1 dummy read of BYTE_TEST is needed after a write to - * WORD_SWAP before its contents are valid */ - byte_test = smsc911x_reg_read(pdata, BYTE_TEST); - - byte_test = smsc911x_reg_read(pdata, BYTE_TEST); - } - - if (byte_test != 0x87654321) { - SMSC_WARN(pdata, drv, "BYTE_TEST: 0x%08X", byte_test); - if (((byte_test >> 16) & 0xFFFF) == (byte_test & 0xFFFF)) { - SMSC_WARN(pdata, probe, - "top 16 bits equal to bottom 16 bits"); - SMSC_TRACE(pdata, probe, - "This may mean the chip is set " - "for 32 bit while the bus is reading 16 bit"); - } - return -ENODEV; - } - - /* Default generation to zero (all workarounds apply) */ - pdata->generation = 0; - - pdata->idrev = smsc911x_reg_read(pdata, ID_REV); - switch (pdata->idrev & 0xFFFF0000) { - case 0x01180000: - case 0x01170000: - case 0x01160000: - case 0x01150000: - case 0x218A0000: - /* LAN911[5678] family */ - pdata->generation = pdata->idrev & 0x0000FFFF; - break; - - case 0x118A0000: - case 0x117A0000: - case 0x116A0000: - case 0x115A0000: - /* LAN921[5678] family */ - pdata->generation = 3; - break; - - case 0x92100000: - case 0x92110000: - case 0x92200000: - case 0x92210000: - /* LAN9210/LAN9211/LAN9220/LAN9221 */ - pdata->generation = 4; - break; - - default: - SMSC_WARN(pdata, probe, "LAN911x not identified, idrev: 0x%08X", - pdata->idrev); - return -ENODEV; - } - - SMSC_TRACE(pdata, probe, - "LAN911x identified, idrev: 0x%08X, generation: %d", - pdata->idrev, pdata->generation); - - if (pdata->generation == 0) - SMSC_WARN(pdata, probe, - "This driver is not intended for this chip revision"); - - /* workaround for platforms without an eeprom, where the mac address - * is stored elsewhere and set by the bootloader. This saves the - * mac address before resetting the device */ - if (pdata->config.flags & SMSC911X_SAVE_MAC_ADDRESS) { - spin_lock_irq(&pdata->mac_lock); - smsc911x_read_mac_address(dev); - spin_unlock_irq(&pdata->mac_lock); - } - - /* Reset the LAN911x */ - if (smsc911x_soft_reset(pdata)) - return -ENODEV; - - /* Disable all interrupt sources until we bring the device up */ - smsc911x_reg_write(pdata, INT_EN, 0); - - ether_setup(dev); - dev->flags |= IFF_MULTICAST; - netif_napi_add(dev, &pdata->napi, smsc911x_poll, SMSC_NAPI_WEIGHT); - dev->netdev_ops = &smsc911x_netdev_ops; - dev->ethtool_ops = &smsc911x_ethtool_ops; - - return 0; -} - -static int __devexit 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); - BUG_ON(!pdata->phy_dev); - - SMSC_TRACE(pdata, ifdown, "Stopping driver"); - - phy_disconnect(pdata->phy_dev); - pdata->phy_dev = NULL; - mdiobus_unregister(pdata->mii_bus); - mdiobus_free(pdata->mii_bus); - - 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) - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - - release_mem_region(res->start, resource_size(res)); - - iounmap(pdata->ioaddr); - - free_netdev(dev); - - return 0; -} - -/* standard register acces */ -static const struct smsc911x_ops standard_smsc911x_ops = { - .reg_read = __smsc911x_reg_read, - .reg_write = __smsc911x_reg_write, - .rx_readfifo = smsc911x_rx_readfifo, - .tx_writefifo = smsc911x_tx_writefifo, -}; - -/* shifted register access */ -static const struct smsc911x_ops shifted_smsc911x_ops = { - .reg_read = __smsc911x_reg_read_shift, - .reg_write = __smsc911x_reg_write_shift, - .rx_readfifo = smsc911x_rx_readfifo_shift, - .tx_writefifo = smsc911x_tx_writefifo_shift, -}; - -static int __devinit smsc911x_drv_probe(struct platform_device *pdev) -{ - struct net_device *dev; - struct smsc911x_data *pdata; - struct smsc911x_platform_config *config = pdev->dev.platform_data; - struct resource *res, *irq_res; - unsigned int intcfg = 0; - int res_size, irq_flags; - int retval; - - pr_info("Driver version %s\n", SMSC_DRV_VERSION); - - /* platform data specifies irq & dynamic bus configuration */ - if (!pdev->dev.platform_data) { - pr_warn("platform_data not provided\n"); - retval = -ENODEV; - goto out_0; - } - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, - "smsc911x-memory"); - if (!res) - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - pr_warn("Could not allocate resource\n"); - retval = -ENODEV; - goto out_0; - } - res_size = resource_size(res); - - irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!irq_res) { - pr_warn("Could not allocate irq resource\n"); - retval = -ENODEV; - goto out_0; - } - - if (!request_mem_region(res->start, res_size, SMSC_CHIPNAME)) { - retval = -EBUSY; - goto out_0; - } - - dev = alloc_etherdev(sizeof(struct smsc911x_data)); - if (!dev) { - pr_warn("Could not allocate device\n"); - retval = -ENOMEM; - goto out_release_io_1; - } - - SET_NETDEV_DEV(dev, &pdev->dev); - - pdata = netdev_priv(dev); - - dev->irq = irq_res->start; - irq_flags = irq_res->flags & IRQF_TRIGGER_MASK; - pdata->ioaddr = ioremap_nocache(res->start, res_size); - - /* copy config parameters across to pdata */ - memcpy(&pdata->config, config, sizeof(pdata->config)); - - pdata->dev = dev; - pdata->msg_enable = ((1 << debug) - 1); - - if (pdata->ioaddr == NULL) { - SMSC_WARN(pdata, probe, "Error smsc911x base address invalid"); - retval = -ENOMEM; - goto out_free_netdev_2; - } - - /* assume standard, non-shifted, access to HW registers */ - pdata->ops = &standard_smsc911x_ops; - /* apply the right access if shifting is needed */ - if (config->shift) - pdata->ops = &shifted_smsc911x_ops; - - retval = smsc911x_init(dev); - if (retval < 0) - goto out_unmap_io_3; - - /* configure irq polarity and type before connecting isr */ - if (pdata->config.irq_polarity == SMSC911X_IRQ_POLARITY_ACTIVE_HIGH) - intcfg |= INT_CFG_IRQ_POL_; - - if (pdata->config.irq_type == SMSC911X_IRQ_TYPE_PUSH_PULL) - intcfg |= INT_CFG_IRQ_TYPE_; - - smsc911x_reg_write(pdata, INT_CFG, intcfg); - - /* Ensure interrupts are globally disabled before connecting ISR */ - smsc911x_reg_write(pdata, INT_EN, 0); - smsc911x_reg_write(pdata, INT_STS, 0xFFFFFFFF); - - retval = request_irq(dev->irq, smsc911x_irqhandler, - irq_flags | IRQF_SHARED, dev->name, dev); - if (retval) { - SMSC_WARN(pdata, probe, - "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_WARN(pdata, probe, "Error %i registering device", retval); - goto out_unset_drvdata_4; - } else { - SMSC_TRACE(pdata, probe, - "Network interface: \"%s\"", dev->name); - } - - retval = smsc911x_mii_init(pdev, dev); - if (retval) { - SMSC_WARN(pdata, probe, "Error %i initialising mii", retval); - goto out_unregister_netdev_5; - } - - spin_lock_irq(&pdata->mac_lock); - - /* Check if mac address has been specified when bringing interface up */ - if (is_valid_ether_addr(dev->dev_addr)) { - smsc911x_set_hw_mac_address(pdata, dev->dev_addr); - SMSC_TRACE(pdata, probe, - "MAC Address is specified by configuration"); - } else if (is_valid_ether_addr(pdata->config.mac)) { - memcpy(dev->dev_addr, pdata->config.mac, 6); - SMSC_TRACE(pdata, probe, - "MAC Address specified by platform data"); - } else { - /* Try reading mac address from device. if EEPROM is present - * it will already have been set */ - smsc_get_mac(dev); - - if (is_valid_ether_addr(dev->dev_addr)) { - /* eeprom values are valid so use them */ - SMSC_TRACE(pdata, probe, - "Mac Address is read from LAN911x EEPROM"); - } else { - /* eeprom values are invalid, generate random MAC */ - random_ether_addr(dev->dev_addr); - smsc911x_set_hw_mac_address(pdata, dev->dev_addr); - SMSC_TRACE(pdata, probe, - "MAC Address is set to random_ether_addr"); - } - } - - spin_unlock_irq(&pdata->mac_lock); - - netdev_info(dev, "MAC Address: %pM\n", dev->dev_addr); - - return 0; - -out_unregister_netdev_5: - unregister_netdev(dev); -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, resource_size(res)); -out_0: - return retval; -} - -#ifdef CONFIG_PM -/* This implementation assumes the devices remains powered on its VDDVARIO - * pins during suspend. */ - -/* TODO: implement freeze/thaw callbacks for hibernation.*/ - -static int smsc911x_suspend(struct device *dev) -{ - struct net_device *ndev = dev_get_drvdata(dev); - struct smsc911x_data *pdata = netdev_priv(ndev); - - /* enable wake on LAN, energy detection and the external PME - * signal. */ - smsc911x_reg_write(pdata, PMT_CTRL, - PMT_CTRL_PM_MODE_D1_ | PMT_CTRL_WOL_EN_ | - PMT_CTRL_ED_EN_ | PMT_CTRL_PME_EN_); - - return 0; -} - -static int smsc911x_resume(struct device *dev) -{ - struct net_device *ndev = dev_get_drvdata(dev); - struct smsc911x_data *pdata = netdev_priv(ndev); - unsigned int to = 100; - - /* Note 3.11 from the datasheet: - * "When the LAN9220 is in a power saving state, a write of any - * data to the BYTE_TEST register will wake-up the device." - */ - smsc911x_reg_write(pdata, BYTE_TEST, 0); - - /* poll the READY bit in PMT_CTRL. Any other access to the device is - * forbidden while this bit isn't set. Try for 100ms and return -EIO - * if it failed. */ - while (!(smsc911x_reg_read(pdata, PMT_CTRL) & PMT_CTRL_READY_) && --to) - udelay(1000); - - return (to == 0) ? -EIO : 0; -} - -static const struct dev_pm_ops smsc911x_pm_ops = { - .suspend = smsc911x_suspend, - .resume = smsc911x_resume, -}; - -#define SMSC911X_PM_OPS (&smsc911x_pm_ops) - -#else -#define SMSC911X_PM_OPS NULL -#endif - -static struct platform_driver smsc911x_driver = { - .probe = smsc911x_drv_probe, - .remove = __devexit_p(smsc911x_drv_remove), - .driver = { - .name = SMSC_CHIPNAME, - .owner = THIS_MODULE, - .pm = SMSC911X_PM_OPS, - }, -}; - -/* Entry point for loading the module */ -static int __init smsc911x_init_module(void) -{ - SMSC_INITIALIZE(); - 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); |