diff options
Diffstat (limited to 'drivers/net/smsc9420.c')
| -rw-r--r-- | drivers/net/smsc9420.c | 1763 |
1 files changed, 0 insertions, 1763 deletions
diff --git a/drivers/net/smsc9420.c b/drivers/net/smsc9420.c deleted file mode 100644 index 459726f54754..000000000000 --- a/drivers/net/smsc9420.c +++ /dev/null @@ -1,1763 +0,0 @@ - /*************************************************************************** - * - * Copyright (C) 2007,2008 SMSC - * - * 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. - * - *************************************************************************** - */ - -#include <linux/interrupt.h> -#include <linux/kernel.h> -#include <linux/netdevice.h> -#include <linux/phy.h> -#include <linux/pci.h> -#include <linux/if_vlan.h> -#include <linux/dma-mapping.h> -#include <linux/crc32.h> -#include <linux/slab.h> -#include <asm/unaligned.h> -#include "smsc9420.h" - -#define DRV_NAME "smsc9420" -#define PFX DRV_NAME ": " -#define DRV_MDIONAME "smsc9420-mdio" -#define DRV_DESCRIPTION "SMSC LAN9420 driver" -#define DRV_VERSION "1.01" - -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION); - -struct smsc9420_dma_desc { - u32 status; - u32 length; - u32 buffer1; - u32 buffer2; -}; - -struct smsc9420_ring_info { - struct sk_buff *skb; - dma_addr_t mapping; -}; - -struct smsc9420_pdata { - void __iomem *base_addr; - struct pci_dev *pdev; - struct net_device *dev; - - struct smsc9420_dma_desc *rx_ring; - struct smsc9420_dma_desc *tx_ring; - struct smsc9420_ring_info *tx_buffers; - struct smsc9420_ring_info *rx_buffers; - dma_addr_t rx_dma_addr; - dma_addr_t tx_dma_addr; - int tx_ring_head, tx_ring_tail; - int rx_ring_head, rx_ring_tail; - - spinlock_t int_lock; - spinlock_t phy_lock; - - struct napi_struct napi; - - bool software_irq_signal; - bool rx_csum; - u32 msg_enable; - - struct phy_device *phy_dev; - struct mii_bus *mii_bus; - int phy_irq[PHY_MAX_ADDR]; - int last_duplex; - int last_carrier; -}; - -static DEFINE_PCI_DEVICE_TABLE(smsc9420_id_table) = { - { PCI_VENDOR_ID_9420, PCI_DEVICE_ID_9420, PCI_ANY_ID, PCI_ANY_ID, }, - { 0, } -}; - -MODULE_DEVICE_TABLE(pci, smsc9420_id_table); - -#define SMSC_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK) - -static uint smsc_debug; -static uint debug = -1; -module_param(debug, uint, 0); -MODULE_PARM_DESC(debug, "debug level"); - -#define smsc_dbg(TYPE, f, a...) \ -do { if ((pd)->msg_enable & NETIF_MSG_##TYPE) \ - printk(KERN_DEBUG PFX f "\n", ## a); \ -} while (0) - -#define smsc_info(TYPE, f, a...) \ -do { if ((pd)->msg_enable & NETIF_MSG_##TYPE) \ - printk(KERN_INFO PFX f "\n", ## a); \ -} while (0) - -#define smsc_warn(TYPE, f, a...) \ -do { if ((pd)->msg_enable & NETIF_MSG_##TYPE) \ - printk(KERN_WARNING PFX f "\n", ## a); \ -} while (0) - -static inline u32 smsc9420_reg_read(struct smsc9420_pdata *pd, u32 offset) -{ - return ioread32(pd->base_addr + offset); -} - -static inline void -smsc9420_reg_write(struct smsc9420_pdata *pd, u32 offset, u32 value) -{ - iowrite32(value, pd->base_addr + offset); -} - -static inline void smsc9420_pci_flush_write(struct smsc9420_pdata *pd) -{ - /* to ensure PCI write completion, we must perform a PCI read */ - smsc9420_reg_read(pd, ID_REV); -} - -static int smsc9420_mii_read(struct mii_bus *bus, int phyaddr, int regidx) -{ - struct smsc9420_pdata *pd = (struct smsc9420_pdata *)bus->priv; - unsigned long flags; - u32 addr; - int i, reg = -EIO; - - spin_lock_irqsave(&pd->phy_lock, flags); - - /* confirm MII not busy */ - if ((smsc9420_reg_read(pd, MII_ACCESS) & MII_ACCESS_MII_BUSY_)) { - smsc_warn(DRV, "MII is busy???"); - goto out; - } - - /* set the address, index & direction (read from PHY) */ - addr = ((phyaddr & 0x1F) << 11) | ((regidx & 0x1F) << 6) | - MII_ACCESS_MII_READ_; - smsc9420_reg_write(pd, MII_ACCESS, addr); - - /* wait for read to complete with 50us timeout */ - for (i = 0; i < 5; i++) { - if (!(smsc9420_reg_read(pd, MII_ACCESS) & - MII_ACCESS_MII_BUSY_)) { - reg = (u16)smsc9420_reg_read(pd, MII_DATA); - goto out; - } - udelay(10); - } - - smsc_warn(DRV, "MII busy timeout!"); - -out: - spin_unlock_irqrestore(&pd->phy_lock, flags); - return reg; -} - -static int smsc9420_mii_write(struct mii_bus *bus, int phyaddr, int regidx, - u16 val) -{ - struct smsc9420_pdata *pd = (struct smsc9420_pdata *)bus->priv; - unsigned long flags; - u32 addr; - int i, reg = -EIO; - - spin_lock_irqsave(&pd->phy_lock, flags); - - /* confirm MII not busy */ - if ((smsc9420_reg_read(pd, MII_ACCESS) & MII_ACCESS_MII_BUSY_)) { - smsc_warn(DRV, "MII is busy???"); - goto out; - } - - /* put the data to write in the MAC */ - smsc9420_reg_write(pd, MII_DATA, (u32)val); - - /* set the address, index & direction (write to PHY) */ - addr = ((phyaddr & 0x1F) << 11) | ((regidx & 0x1F) << 6) | - MII_ACCESS_MII_WRITE_; - smsc9420_reg_write(pd, MII_ACCESS, addr); - - /* wait for write to complete with 50us timeout */ - for (i = 0; i < 5; i++) { - if (!(smsc9420_reg_read(pd, MII_ACCESS) & - MII_ACCESS_MII_BUSY_)) { - reg = 0; - goto out; - } - udelay(10); - } - - smsc_warn(DRV, "MII busy timeout!"); - -out: - spin_unlock_irqrestore(&pd->phy_lock, flags); - return reg; -} - -/* Returns hash bit number for given MAC address - * Example: - * 01 00 5E 00 00 01 -> returns bit number 31 */ -static u32 smsc9420_hash(u8 addr[ETH_ALEN]) -{ - return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f; -} - -static int smsc9420_eeprom_reload(struct smsc9420_pdata *pd) -{ - int timeout = 100000; - - BUG_ON(!pd); - - if (smsc9420_reg_read(pd, E2P_CMD) & E2P_CMD_EPC_BUSY_) { - smsc_dbg(DRV, "smsc9420_eeprom_reload: Eeprom busy"); - return -EIO; - } - - smsc9420_reg_write(pd, E2P_CMD, - (E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_RELOAD_)); - - do { - udelay(10); - if (!(smsc9420_reg_read(pd, E2P_CMD) & E2P_CMD_EPC_BUSY_)) - return 0; - } while (timeout--); - - smsc_warn(DRV, "smsc9420_eeprom_reload: Eeprom timed out"); - return -EIO; -} - -/* Standard ioctls for mii-tool */ -static int smsc9420_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - - if (!netif_running(dev) || !pd->phy_dev) - return -EINVAL; - - return phy_mii_ioctl(pd->phy_dev, ifr, cmd); -} - -static int smsc9420_ethtool_get_settings(struct net_device *dev, - struct ethtool_cmd *cmd) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - - if (!pd->phy_dev) - return -ENODEV; - - cmd->maxtxpkt = 1; - cmd->maxrxpkt = 1; - return phy_ethtool_gset(pd->phy_dev, cmd); -} - -static int smsc9420_ethtool_set_settings(struct net_device *dev, - struct ethtool_cmd *cmd) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - - if (!pd->phy_dev) - return -ENODEV; - - return phy_ethtool_sset(pd->phy_dev, cmd); -} - -static void smsc9420_ethtool_get_drvinfo(struct net_device *netdev, - struct ethtool_drvinfo *drvinfo) -{ - struct smsc9420_pdata *pd = netdev_priv(netdev); - - strcpy(drvinfo->driver, DRV_NAME); - strcpy(drvinfo->bus_info, pci_name(pd->pdev)); - strcpy(drvinfo->version, DRV_VERSION); -} - -static u32 smsc9420_ethtool_get_msglevel(struct net_device *netdev) -{ - struct smsc9420_pdata *pd = netdev_priv(netdev); - return pd->msg_enable; -} - -static void smsc9420_ethtool_set_msglevel(struct net_device *netdev, u32 data) -{ - struct smsc9420_pdata *pd = netdev_priv(netdev); - pd->msg_enable = data; -} - -static int smsc9420_ethtool_nway_reset(struct net_device *netdev) -{ - struct smsc9420_pdata *pd = netdev_priv(netdev); - - if (!pd->phy_dev) - return -ENODEV; - - return phy_start_aneg(pd->phy_dev); -} - -static int smsc9420_ethtool_getregslen(struct net_device *dev) -{ - /* all smsc9420 registers plus all phy registers */ - return 0x100 + (32 * sizeof(u32)); -} - -static void -smsc9420_ethtool_getregs(struct net_device *dev, struct ethtool_regs *regs, - void *buf) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - struct phy_device *phy_dev = pd->phy_dev; - unsigned int i, j = 0; - u32 *data = buf; - - regs->version = smsc9420_reg_read(pd, ID_REV); - for (i = 0; i < 0x100; i += (sizeof(u32))) - data[j++] = smsc9420_reg_read(pd, i); - - // cannot read phy registers if the net device is down - if (!phy_dev) - return; - - for (i = 0; i <= 31; i++) - data[j++] = smsc9420_mii_read(phy_dev->bus, phy_dev->addr, i); -} - -static void smsc9420_eeprom_enable_access(struct smsc9420_pdata *pd) -{ - unsigned int temp = smsc9420_reg_read(pd, GPIO_CFG); - temp &= ~GPIO_CFG_EEPR_EN_; - smsc9420_reg_write(pd, GPIO_CFG, temp); - msleep(1); -} - -static int smsc9420_eeprom_send_cmd(struct smsc9420_pdata *pd, u32 op) -{ - int timeout = 100; - u32 e2cmd; - - smsc_dbg(HW, "op 0x%08x", op); - if (smsc9420_reg_read(pd, E2P_CMD) & E2P_CMD_EPC_BUSY_) { - smsc_warn(HW, "Busy at start"); - return -EBUSY; - } - - e2cmd = op | E2P_CMD_EPC_BUSY_; - smsc9420_reg_write(pd, E2P_CMD, e2cmd); - - do { - msleep(1); - e2cmd = smsc9420_reg_read(pd, E2P_CMD); - } while ((e2cmd & E2P_CMD_EPC_BUSY_) && (--timeout)); - - if (!timeout) { - smsc_info(HW, "TIMED OUT"); - return -EAGAIN; - } - - if (e2cmd & E2P_CMD_EPC_TIMEOUT_) { - smsc_info(HW, "Error occurred during eeprom operation"); - return -EINVAL; - } - - return 0; -} - -static int smsc9420_eeprom_read_location(struct smsc9420_pdata *pd, - u8 address, u8 *data) -{ - u32 op = E2P_CMD_EPC_CMD_READ_ | address; - int ret; - - smsc_dbg(HW, "address 0x%x", address); - ret = smsc9420_eeprom_send_cmd(pd, op); - - if (!ret) - data[address] = smsc9420_reg_read(pd, E2P_DATA); - - return ret; -} - -static int smsc9420_eeprom_write_location(struct smsc9420_pdata *pd, - u8 address, u8 data) -{ - u32 op = E2P_CMD_EPC_CMD_ERASE_ | address; - int ret; - - smsc_dbg(HW, "address 0x%x, data 0x%x", address, data); - ret = smsc9420_eeprom_send_cmd(pd, op); - - if (!ret) { - op = E2P_CMD_EPC_CMD_WRITE_ | address; - smsc9420_reg_write(pd, E2P_DATA, (u32)data); - ret = smsc9420_eeprom_send_cmd(pd, op); - } - - return ret; -} - -static int smsc9420_ethtool_get_eeprom_len(struct net_device *dev) -{ - return SMSC9420_EEPROM_SIZE; -} - -static int smsc9420_ethtool_get_eeprom(struct net_device *dev, - struct ethtool_eeprom *eeprom, u8 *data) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - u8 eeprom_data[SMSC9420_EEPROM_SIZE]; - int len, i; - - smsc9420_eeprom_enable_access(pd); - - len = min(eeprom->len, SMSC9420_EEPROM_SIZE); - for (i = 0; i < len; i++) { - int ret = smsc9420_eeprom_read_location(pd, i, eeprom_data); - if (ret < 0) { - eeprom->len = 0; - return ret; - } - } - - memcpy(data, &eeprom_data[eeprom->offset], len); - eeprom->magic = SMSC9420_EEPROM_MAGIC; - eeprom->len = len; - return 0; -} - -static int smsc9420_ethtool_set_eeprom(struct net_device *dev, - struct ethtool_eeprom *eeprom, u8 *data) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - int ret; - - if (eeprom->magic != SMSC9420_EEPROM_MAGIC) - return -EINVAL; - - smsc9420_eeprom_enable_access(pd); - smsc9420_eeprom_send_cmd(pd, E2P_CMD_EPC_CMD_EWEN_); - ret = smsc9420_eeprom_write_location(pd, eeprom->offset, *data); - smsc9420_eeprom_send_cmd(pd, E2P_CMD_EPC_CMD_EWDS_); - - /* Single byte write, according to man page */ - eeprom->len = 1; - - return ret; -} - -static const struct ethtool_ops smsc9420_ethtool_ops = { - .get_settings = smsc9420_ethtool_get_settings, - .set_settings = smsc9420_ethtool_set_settings, - .get_drvinfo = smsc9420_ethtool_get_drvinfo, - .get_msglevel = smsc9420_ethtool_get_msglevel, - .set_msglevel = smsc9420_ethtool_set_msglevel, - .nway_reset = smsc9420_ethtool_nway_reset, - .get_link = ethtool_op_get_link, - .get_eeprom_len = smsc9420_ethtool_get_eeprom_len, - .get_eeprom = smsc9420_ethtool_get_eeprom, - .set_eeprom = smsc9420_ethtool_set_eeprom, - .get_regs_len = smsc9420_ethtool_getregslen, - .get_regs = smsc9420_ethtool_getregs, -}; - -/* Sets the device MAC address to dev_addr */ -static void smsc9420_set_mac_address(struct net_device *dev) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - u8 *dev_addr = dev->dev_addr; - 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]; - - smsc9420_reg_write(pd, ADDRH, mac_high16); - smsc9420_reg_write(pd, ADDRL, mac_low32); -} - -static void smsc9420_check_mac_address(struct net_device *dev) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - - /* Check if mac address has been specified when bringing interface up */ - if (is_valid_ether_addr(dev->dev_addr)) { - smsc9420_set_mac_address(dev); - smsc_dbg(PROBE, "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 = smsc9420_reg_read(pd, ADDRH); - u32 mac_low32 = smsc9420_reg_read(pd, 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_dbg(PROBE, "Mac Address is read from EEPROM"); - } else { - /* eeprom values are invalid, generate random MAC */ - random_ether_addr(dev->dev_addr); - smsc9420_set_mac_address(dev); - smsc_dbg(PROBE, - "MAC Address is set to random_ether_addr"); - } - } -} - -static void smsc9420_stop_tx(struct smsc9420_pdata *pd) -{ - u32 dmac_control, mac_cr, dma_intr_ena; - int timeout = 1000; - - /* disable TX DMAC */ - dmac_control = smsc9420_reg_read(pd, DMAC_CONTROL); - dmac_control &= (~DMAC_CONTROL_ST_); - smsc9420_reg_write(pd, DMAC_CONTROL, dmac_control); - - /* Wait max 10ms for transmit process to stop */ - while (--timeout) { - if (smsc9420_reg_read(pd, DMAC_STATUS) & DMAC_STS_TS_) - break; - udelay(10); - } - - if (!timeout) - smsc_warn(IFDOWN, "TX DMAC failed to stop"); - - /* ACK Tx DMAC stop bit */ - smsc9420_reg_write(pd, DMAC_STATUS, DMAC_STS_TXPS_); - - /* mask TX DMAC interrupts */ - dma_intr_ena = smsc9420_reg_read(pd, DMAC_INTR_ENA); - dma_intr_ena &= ~(DMAC_INTR_ENA_TX_); - smsc9420_reg_write(pd, DMAC_INTR_ENA, dma_intr_ena); - smsc9420_pci_flush_write(pd); - - /* stop MAC TX */ - mac_cr = smsc9420_reg_read(pd, MAC_CR) & (~MAC_CR_TXEN_); - smsc9420_reg_write(pd, MAC_CR, mac_cr); - smsc9420_pci_flush_write(pd); -} - -static void smsc9420_free_tx_ring(struct smsc9420_pdata *pd) -{ - int i; - - BUG_ON(!pd->tx_ring); - - if (!pd->tx_buffers) - return; - - for (i = 0; i < TX_RING_SIZE; i++) { - struct sk_buff *skb = pd->tx_buffers[i].skb; - - if (skb) { - BUG_ON(!pd->tx_buffers[i].mapping); - pci_unmap_single(pd->pdev, pd->tx_buffers[i].mapping, - skb->len, PCI_DMA_TODEVICE); - dev_kfree_skb_any(skb); - } - - pd->tx_ring[i].status = 0; - pd->tx_ring[i].length = 0; - pd->tx_ring[i].buffer1 = 0; - pd->tx_ring[i].buffer2 = 0; - } - wmb(); - - kfree(pd->tx_buffers); - pd->tx_buffers = NULL; - - pd->tx_ring_head = 0; - pd->tx_ring_tail = 0; -} - -static void smsc9420_free_rx_ring(struct smsc9420_pdata *pd) -{ - int i; - - BUG_ON(!pd->rx_ring); - - if (!pd->rx_buffers) - return; - - for (i = 0; i < RX_RING_SIZE; i++) { - if (pd->rx_buffers[i].skb) - dev_kfree_skb_any(pd->rx_buffers[i].skb); - - if (pd->rx_buffers[i].mapping) - pci_unmap_single(pd->pdev, pd->rx_buffers[i].mapping, - PKT_BUF_SZ, PCI_DMA_FROMDEVICE); - - pd->rx_ring[i].status = 0; - pd->rx_ring[i].length = 0; - pd->rx_ring[i].buffer1 = 0; - pd->rx_ring[i].buffer2 = 0; - } - wmb(); - - kfree(pd->rx_buffers); - pd->rx_buffers = NULL; - - pd->rx_ring_head = 0; - pd->rx_ring_tail = 0; -} - -static void smsc9420_stop_rx(struct smsc9420_pdata *pd) -{ - int timeout = 1000; - u32 mac_cr, dmac_control, dma_intr_ena; - - /* mask RX DMAC interrupts */ - dma_intr_ena = smsc9420_reg_read(pd, DMAC_INTR_ENA); - dma_intr_ena &= (~DMAC_INTR_ENA_RX_); - smsc9420_reg_write(pd, DMAC_INTR_ENA, dma_intr_ena); - smsc9420_pci_flush_write(pd); - - /* stop RX MAC prior to stoping DMA */ - mac_cr = smsc9420_reg_read(pd, MAC_CR) & (~MAC_CR_RXEN_); - smsc9420_reg_write(pd, MAC_CR, mac_cr); - smsc9420_pci_flush_write(pd); - - /* stop RX DMAC */ - dmac_control = smsc9420_reg_read(pd, DMAC_CONTROL); - dmac_control &= (~DMAC_CONTROL_SR_); - smsc9420_reg_write(pd, DMAC_CONTROL, dmac_control); - smsc9420_pci_flush_write(pd); - - /* wait up to 10ms for receive to stop */ - while (--timeout) { - if (smsc9420_reg_read(pd, DMAC_STATUS) & DMAC_STS_RS_) - break; - udelay(10); - } - - if (!timeout) - smsc_warn(IFDOWN, "RX DMAC did not stop! timeout."); - - /* ACK the Rx DMAC stop bit */ - smsc9420_reg_write(pd, DMAC_STATUS, DMAC_STS_RXPS_); -} - -static irqreturn_t smsc9420_isr(int irq, void *dev_id) -{ - struct smsc9420_pdata *pd = dev_id; - u32 int_cfg, int_sts, int_ctl; - irqreturn_t ret = IRQ_NONE; - ulong flags; - - BUG_ON(!pd); - BUG_ON(!pd->base_addr); - - int_cfg = smsc9420_reg_read(pd, INT_CFG); - - /* check if it's our interrupt */ - if ((int_cfg & (INT_CFG_IRQ_EN_ | INT_CFG_IRQ_INT_)) != - (INT_CFG_IRQ_EN_ | INT_CFG_IRQ_INT_)) - return IRQ_NONE; - - int_sts = smsc9420_reg_read(pd, INT_STAT); - - if (likely(INT_STAT_DMAC_INT_ & int_sts)) { - u32 status = smsc9420_reg_read(pd, DMAC_STATUS); - u32 ints_to_clear = 0; - - if (status & DMAC_STS_TX_) { - ints_to_clear |= (DMAC_STS_TX_ | DMAC_STS_NIS_); - netif_wake_queue(pd->dev); - } - - if (status & DMAC_STS_RX_) { - /* mask RX DMAC interrupts */ - u32 dma_intr_ena = smsc9420_reg_read(pd, DMAC_INTR_ENA); - dma_intr_ena &= (~DMAC_INTR_ENA_RX_); - smsc9420_reg_write(pd, DMAC_INTR_ENA, dma_intr_ena); - smsc9420_pci_flush_write(pd); - - ints_to_clear |= (DMAC_STS_RX_ | DMAC_STS_NIS_); - napi_schedule(&pd->napi); - } - - if (ints_to_clear) - smsc9420_reg_write(pd, DMAC_STATUS, ints_to_clear); - - ret = IRQ_HANDLED; - } - - if (unlikely(INT_STAT_SW_INT_ & int_sts)) { - /* mask software interrupt */ - spin_lock_irqsave(&pd->int_lock, flags); - int_ctl = smsc9420_reg_read(pd, INT_CTL); - int_ctl &= (~INT_CTL_SW_INT_EN_); - smsc9420_reg_write(pd, INT_CTL, int_ctl); - spin_unlock_irqrestore(&pd->int_lock, flags); - - smsc9420_reg_write(pd, INT_STAT, INT_STAT_SW_INT_); - pd->software_irq_signal = true; - smp_wmb(); - - ret = IRQ_HANDLED; - } - - /* to ensure PCI write completion, we must perform a PCI read */ - smsc9420_pci_flush_write(pd); - - return ret; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void smsc9420_poll_controller(struct net_device *dev) -{ - disable_irq(dev->irq); - smsc9420_isr(0, dev); - enable_irq(dev->irq); -} -#endif /* CONFIG_NET_POLL_CONTROLLER */ - -static void smsc9420_dmac_soft_reset(struct smsc9420_pdata *pd) -{ - smsc9420_reg_write(pd, BUS_MODE, BUS_MODE_SWR_); - smsc9420_reg_read(pd, BUS_MODE); - udelay(2); - if (smsc9420_reg_read(pd, BUS_MODE) & BUS_MODE_SWR_) - smsc_warn(DRV, "Software reset not cleared"); -} - -static int smsc9420_stop(struct net_device *dev) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - u32 int_cfg; - ulong flags; - - BUG_ON(!pd); - BUG_ON(!pd->phy_dev); - - /* disable master interrupt */ - spin_lock_irqsave(&pd->int_lock, flags); - int_cfg = smsc9420_reg_read(pd, INT_CFG) & (~INT_CFG_IRQ_EN_); - smsc9420_reg_write(pd, INT_CFG, int_cfg); - spin_unlock_irqrestore(&pd->int_lock, flags); - - netif_tx_disable(dev); - napi_disable(&pd->napi); - - smsc9420_stop_tx(pd); - smsc9420_free_tx_ring(pd); - - smsc9420_stop_rx(pd); - smsc9420_free_rx_ring(pd); - - free_irq(dev->irq, pd); - - smsc9420_dmac_soft_reset(pd); - - phy_stop(pd->phy_dev); - - phy_disconnect(pd->phy_dev); - pd->phy_dev = NULL; - mdiobus_unregister(pd->mii_bus); - mdiobus_free(pd->mii_bus); - - return 0; -} - -static void smsc9420_rx_count_stats(struct net_device *dev, u32 desc_status) -{ - if (unlikely(desc_status & RDES0_ERROR_SUMMARY_)) { - dev->stats.rx_errors++; - if (desc_status & RDES0_DESCRIPTOR_ERROR_) - dev->stats.rx_over_errors++; - else if (desc_status & (RDES0_FRAME_TOO_LONG_ | - RDES0_RUNT_FRAME_ | RDES0_COLLISION_SEEN_)) - dev->stats.rx_frame_errors++; - else if (desc_status & RDES0_CRC_ERROR_) - dev->stats.rx_crc_errors++; - } - - if (unlikely(desc_status & RDES0_LENGTH_ERROR_)) - dev->stats.rx_length_errors++; - - if (unlikely(!((desc_status & RDES0_LAST_DESCRIPTOR_) && - (desc_status & RDES0_FIRST_DESCRIPTOR_)))) - dev->stats.rx_length_errors++; - - if (desc_status & RDES0_MULTICAST_FRAME_) - dev->stats.multicast++; -} - -static void smsc9420_rx_handoff(struct smsc9420_pdata *pd, const int index, - const u32 status) -{ - struct net_device *dev = pd->dev; - struct sk_buff *skb; - u16 packet_length = (status & RDES0_FRAME_LENGTH_MASK_) - >> RDES0_FRAME_LENGTH_SHFT_; - - /* remove crc from packet lendth */ - packet_length -= 4; - - if (pd->rx_csum) - packet_length -= 2; - - dev->stats.rx_packets++; - dev->stats.rx_bytes += packet_length; - - pci_unmap_single(pd->pdev, pd->rx_buffers[index].mapping, - PKT_BUF_SZ, PCI_DMA_FROMDEVICE); - pd->rx_buffers[index].mapping = 0; - - skb = pd->rx_buffers[index].skb; - pd->rx_buffers[index].skb = NULL; - - if (pd->rx_csum) { - u16 hw_csum = get_unaligned_le16(skb_tail_pointer(skb) + - NET_IP_ALIGN + packet_length + 4); - put_unaligned_le16(hw_csum, &skb->csum); - skb->ip_summed = CHECKSUM_COMPLETE; - } - - skb_reserve(skb, NET_IP_ALIGN); - skb_put(skb, packet_length); - - skb->protocol = eth_type_trans(skb, dev); - - netif_receive_skb(skb); -} - -static int smsc9420_alloc_rx_buffer(struct smsc9420_pdata *pd, int index) -{ - struct sk_buff *skb = netdev_alloc_skb(pd->dev, PKT_BUF_SZ); - dma_addr_t mapping; - - BUG_ON(pd->rx_buffers[index].skb); - BUG_ON(pd->rx_buffers[index].mapping); - - if (unlikely(!skb)) { - smsc_warn(RX_ERR, "Failed to allocate new skb!"); - return -ENOMEM; - } - - skb->dev = pd->dev; - - mapping = pci_map_single(pd->pdev, skb_tail_pointer(skb), - PKT_BUF_SZ, PCI_DMA_FROMDEVICE); - if (pci_dma_mapping_error(pd->pdev, mapping)) { - dev_kfree_skb_any(skb); - smsc_warn(RX_ERR, "pci_map_single failed!"); - return -ENOMEM; - } - - pd->rx_buffers[index].skb = skb; - pd->rx_buffers[index].mapping = mapping; - pd->rx_ring[index].buffer1 = mapping + NET_IP_ALIGN; - pd->rx_ring[index].status = RDES0_OWN_; - wmb(); - - return 0; -} - -static void smsc9420_alloc_new_rx_buffers(struct smsc9420_pdata *pd) -{ - while (pd->rx_ring_tail != pd->rx_ring_head) { - if (smsc9420_alloc_rx_buffer(pd, pd->rx_ring_tail)) - break; - - pd->rx_ring_tail = (pd->rx_ring_tail + 1) % RX_RING_SIZE; - } -} - -static int smsc9420_rx_poll(struct napi_struct *napi, int budget) -{ - struct smsc9420_pdata *pd = - container_of(napi, struct smsc9420_pdata, napi); - struct net_device *dev = pd->dev; - u32 drop_frame_cnt, dma_intr_ena, status; - int work_done; - - for (work_done = 0; work_done < budget; work_done++) { - rmb(); - status = pd->rx_ring[pd->rx_ring_head].status; - - /* stop if DMAC owns this dma descriptor */ - if (status & RDES0_OWN_) - break; - - smsc9420_rx_count_stats(dev, status); - smsc9420_rx_handoff(pd, pd->rx_ring_head, status); - pd->rx_ring_head = (pd->rx_ring_head + 1) % RX_RING_SIZE; - smsc9420_alloc_new_rx_buffers(pd); - } - - drop_frame_cnt = smsc9420_reg_read(pd, MISS_FRAME_CNTR); - dev->stats.rx_dropped += - (drop_frame_cnt & 0xFFFF) + ((drop_frame_cnt >> 17) & 0x3FF); - - /* Kick RXDMA */ - smsc9420_reg_write(pd, RX_POLL_DEMAND, 1); - smsc9420_pci_flush_write(pd); - - if (work_done < budget) { - napi_complete(&pd->napi); - - /* re-enable RX DMA interrupts */ - dma_intr_ena = smsc9420_reg_read(pd, DMAC_INTR_ENA); - dma_intr_ena |= (DMAC_INTR_ENA_RX_ | DMAC_INTR_ENA_NIS_); - smsc9420_reg_write(pd, DMAC_INTR_ENA, dma_intr_ena); - smsc9420_pci_flush_write(pd); - } - return work_done; -} - -static void -smsc9420_tx_update_stats(struct net_device *dev, u32 status, u32 length) -{ - if (unlikely(status & TDES0_ERROR_SUMMARY_)) { - dev->stats.tx_errors++; - if (status & (TDES0_EXCESSIVE_DEFERRAL_ | - TDES0_EXCESSIVE_COLLISIONS_)) - dev->stats.tx_aborted_errors++; - - if (status & (TDES0_LOSS_OF_CARRIER_ | TDES0_NO_CARRIER_)) - dev->stats.tx_carrier_errors++; - } else { - dev->stats.tx_packets++; - dev->stats.tx_bytes += (length & 0x7FF); - } - - if (unlikely(status & TDES0_EXCESSIVE_COLLISIONS_)) { - dev->stats.collisions += 16; - } else { - dev->stats.collisions += - (status & TDES0_COLLISION_COUNT_MASK_) >> - TDES0_COLLISION_COUNT_SHFT_; - } - - if (unlikely(status & TDES0_HEARTBEAT_FAIL_)) - dev->stats.tx_heartbeat_errors++; -} - -/* Check for completed dma transfers, update stats and free skbs */ -static void smsc9420_complete_tx(struct net_device *dev) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - - while (pd->tx_ring_tail != pd->tx_ring_head) { - int index = pd->tx_ring_tail; - u32 status, length; - - rmb(); - status = pd->tx_ring[index].status; - length = pd->tx_ring[index].length; - - /* Check if DMA still owns this descriptor */ - if (unlikely(TDES0_OWN_ & status)) - break; - - smsc9420_tx_update_stats(dev, status, length); - - BUG_ON(!pd->tx_buffers[index].skb); - BUG_ON(!pd->tx_buffers[index].mapping); - - pci_unmap_single(pd->pdev, pd->tx_buffers[index].mapping, - pd->tx_buffers[index].skb->len, PCI_DMA_TODEVICE); - pd->tx_buffers[index].mapping = 0; - - dev_kfree_skb_any(pd->tx_buffers[index].skb); - pd->tx_buffers[index].skb = NULL; - - pd->tx_ring[index].buffer1 = 0; - wmb(); - - pd->tx_ring_tail = (pd->tx_ring_tail + 1) % TX_RING_SIZE; - } -} - -static netdev_tx_t smsc9420_hard_start_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - dma_addr_t mapping; - int index = pd->tx_ring_head; - u32 tmp_desc1; - bool about_to_take_last_desc = - (((pd->tx_ring_head + 2) % TX_RING_SIZE) == pd->tx_ring_tail); - - smsc9420_complete_tx(dev); - - rmb(); - BUG_ON(pd->tx_ring[index].status & TDES0_OWN_); - BUG_ON(pd->tx_buffers[index].skb); - BUG_ON(pd->tx_buffers[index].mapping); - - mapping = pci_map_single(pd->pdev, skb->data, - skb->len, PCI_DMA_TODEVICE); - if (pci_dma_mapping_error(pd->pdev, mapping)) { - smsc_warn(TX_ERR, "pci_map_single failed, dropping packet"); - return NETDEV_TX_BUSY; - } - - pd->tx_buffers[index].skb = skb; - pd->tx_buffers[index].mapping = mapping; - - tmp_desc1 = (TDES1_LS_ | ((u32)skb->len & 0x7FF)); - if (unlikely(about_to_take_last_desc)) { - tmp_desc1 |= TDES1_IC_; - netif_stop_queue(pd->dev); - } - - /* check if we are at the last descriptor and need to set EOR */ - if (unlikely(index == (TX_RING_SIZE - 1))) - tmp_desc1 |= TDES1_TER_; - - pd->tx_ring[index].buffer1 = mapping; - pd->tx_ring[index].length = tmp_desc1; - wmb(); - - /* increment head */ - pd->tx_ring_head = (pd->tx_ring_head + 1) % TX_RING_SIZE; - - /* assign ownership to DMAC */ - pd->tx_ring[index].status = TDES0_OWN_; - wmb(); - - skb_tx_timestamp(skb); - - /* kick the DMA */ - smsc9420_reg_write(pd, TX_POLL_DEMAND, 1); - smsc9420_pci_flush_write(pd); - - return NETDEV_TX_OK; -} - -static struct net_device_stats *smsc9420_get_stats(struct net_device *dev) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - u32 counter = smsc9420_reg_read(pd, MISS_FRAME_CNTR); - dev->stats.rx_dropped += - (counter & 0x0000FFFF) + ((counter >> 17) & 0x000003FF); - return &dev->stats; -} - -static void smsc9420_set_multicast_list(struct net_device *dev) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - u32 mac_cr = smsc9420_reg_read(pd, MAC_CR); - - if (dev->flags & IFF_PROMISC) { - smsc_dbg(HW, "Promiscuous Mode Enabled"); - mac_cr |= MAC_CR_PRMS_; - mac_cr &= (~MAC_CR_MCPAS_); - mac_cr &= (~MAC_CR_HPFILT_); - } else if (dev->flags & IFF_ALLMULTI) { - smsc_dbg(HW, "Receive all Multicast Enabled"); - mac_cr &= (~MAC_CR_PRMS_); - mac_cr |= MAC_CR_MCPAS_; - mac_cr &= (~MAC_CR_HPFILT_); - } else if (!netdev_mc_empty(dev)) { - struct netdev_hw_addr *ha; - u32 hash_lo = 0, hash_hi = 0; - - smsc_dbg(HW, "Multicast filter enabled"); - netdev_for_each_mc_addr(ha, dev) { - u32 bit_num = smsc9420_hash(ha->addr); - u32 mask = 1 << (bit_num & 0x1F); - - if (bit_num & 0x20) - hash_hi |= mask; - else - hash_lo |= mask; - - } - smsc9420_reg_write(pd, HASHH, hash_hi); - smsc9420_reg_write(pd, HASHL, hash_lo); - - mac_cr &= (~MAC_CR_PRMS_); - mac_cr &= (~MAC_CR_MCPAS_); - mac_cr |= MAC_CR_HPFILT_; - } else { - smsc_dbg(HW, "Receive own packets only."); - smsc9420_reg_write(pd, HASHH, 0); - smsc9420_reg_write(pd, HASHL, 0); - - mac_cr &= (~MAC_CR_PRMS_); - mac_cr &= (~MAC_CR_MCPAS_); - mac_cr &= (~MAC_CR_HPFILT_); - } - - smsc9420_reg_write(pd, MAC_CR, mac_cr); - smsc9420_pci_flush_write(pd); -} - -static void smsc9420_phy_update_flowcontrol(struct smsc9420_pdata *pd) -{ - struct phy_device *phy_dev = pd->phy_dev; - u32 flow; - - 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; - - smsc_info(LINK, "rx pause %s, tx pause %s", - (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), - (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); - } else { - smsc_info(LINK, "half duplex"); - flow = 0; - } - - smsc9420_reg_write(pd, FLOW, flow); -} - -/* Update link mode if anything has changed. Called periodically when the - * PHY is in polling mode, even if nothing has changed. */ -static void smsc9420_phy_adjust_link(struct net_device *dev) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - struct phy_device *phy_dev = pd->phy_dev; - int carrier; - - if (phy_dev->duplex != pd->last_duplex) { - u32 mac_cr = smsc9420_reg_read(pd, MAC_CR); - if (phy_dev->duplex) { - smsc_dbg(LINK, "full duplex mode"); - mac_cr |= MAC_CR_FDPX_; - } else { - smsc_dbg(LINK, "half duplex mode"); - mac_cr &= ~MAC_CR_FDPX_; - } - smsc9420_reg_write(pd, MAC_CR, mac_cr); - - smsc9420_phy_update_flowcontrol(pd); - pd->last_duplex = phy_dev->duplex; - } - - carrier = netif_carrier_ok(dev); - if (carrier != pd->last_carrier) { - if (carrier) - smsc_dbg(LINK, "carrier OK"); - else - smsc_dbg(LINK, "no carrier"); - pd->last_carrier = carrier; - } -} - -static int smsc9420_mii_probe(struct net_device *dev) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - struct phy_device *phydev = NULL; - - BUG_ON(pd->phy_dev); - - /* Device only supports internal PHY at address 1 */ - if (!pd->mii_bus->phy_map[1]) { - pr_err("%s: no PHY found at address 1\n", dev->name); - return -ENODEV; - } - - phydev = pd->mii_bus->phy_map[1]; - smsc_info(PROBE, "PHY addr %d, phy_id 0x%08X", phydev->addr, - phydev->phy_id); - - phydev = phy_connect(dev, dev_name(&phydev->dev), - smsc9420_phy_adjust_link, 0, PHY_INTERFACE_MODE_MII); - - if (IS_ERR(phydev)) { - pr_err("%s: Could not attach to PHY\n", dev->name); - return PTR_ERR(phydev); - } - - pr_info("%s: attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", - dev->name, 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; - - pd->phy_dev = phydev; - pd->last_duplex = -1; - pd->last_carrier = -1; - - return 0; -} - -static int smsc9420_mii_init(struct net_device *dev) -{ - struct smsc9420_pdata *pd = netdev_priv(dev); - int err = -ENXIO, i; - - pd->mii_bus = mdiobus_alloc(); - if (!pd->mii_bus) { - err = -ENOMEM; - goto err_out_1; - } - pd->mii_bus->name = DRV_MDIONAME; - snprintf(pd->mii_bus->id, MII_BUS_ID_SIZE, "%x", - (pd->pdev->bus->number << 8) | pd->pdev->devfn); - pd->mii_bus->priv = pd; - pd->mii_bus->read = smsc9420_mii_read; - pd->mii_bus->write = smsc9420_mii_write; - pd->mii_bus->irq = pd->phy_irq; - for (i = 0; i < PHY_MAX_ADDR; ++i) - pd->mii_bus->irq[i] = PHY_POLL; - - /* Mask all PHYs except ID 1 (internal) */ - pd->mii_bus->phy_mask = ~(1 << 1); - - if (mdiobus_register(pd->mii_bus)) { - smsc_warn(PROBE, "Error registering mii bus"); - goto err_out_free_bus_2; - } - - if (smsc9420_mii_probe(dev) < 0) { - smsc_warn(PROBE, "Error probing mii bus"); - goto err_out_unregister_bus_3; - } - - return 0; - -err_out_unregister_bus_3: - mdiobus_unregister(pd->mii_bus); -err_out_free_bus_2: - mdiobus_free(pd->mii_bus); -err_out_1: - return err; -} - -static int smsc9420_alloc_tx_ring(struct smsc9420_pdata *pd) -{ - int i; - - BUG_ON(!pd->tx_ring); - - pd->tx_buffers = kmalloc((sizeof(struct smsc9420_ring_info) * - TX_RING_SIZE), GFP_KERNEL); - if (!pd->tx_buffers) { - smsc_warn(IFUP, "Failed to allocated tx_buffers"); - return -ENOMEM; - } - - /* Initialize the TX Ring */ - for (i = 0; i < TX_RING_SIZE; i++) { - pd->tx_buffers[i].skb = NULL; - pd->tx_buffers[i].mapping = 0; - pd->tx_ring[i].status = 0; - pd->tx_ring[i].length = 0; - pd->tx_ring[i].buffer1 = 0; - pd->tx_ring[i].buffer2 = 0; - } - pd->tx_ring[TX_RING_SIZE - 1].length = TDES1_TER_; - wmb(); - - pd->tx_ring_head = 0; - pd->tx_ring_tail = 0; - - smsc9420_reg_write(pd, TX_BASE_ADDR, pd->tx_dma_addr); - smsc9420_pci_flush_write(pd); - - return 0; -} - -static int smsc9420_alloc_rx_ring(struct smsc9420_pdata *pd) -{ - int i; - - BUG_ON(!pd->rx_ring); - - pd->rx_buffers = kmalloc((sizeof(struct smsc9420_ring_info) * - RX_RING_SIZE), GFP_KERNEL); - if (pd->rx_buffers == NULL) { - smsc_warn(IFUP, "Failed to allocated rx_buffers"); - goto out; - } - - /* initialize the rx ring */ - for (i = 0; i < RX_RING_SIZE; i++) { - pd->rx_ring[i].status = 0; - pd->rx_ring[i].length = PKT_BUF_SZ; - pd->rx_ring[i].buffer2 = 0; - pd->rx_buffers[i].skb = NULL; - pd->rx_buffers[i].mapping = 0; - } - pd->rx_ring[RX_RING_SIZE - 1].length = (PKT_BUF_SZ | RDES1_RER_); - - /* now allocate the entire ring of skbs */ - for (i = 0; i < RX_RING_SIZE; i++) { - if (smsc9420_alloc_rx_buffer(pd, i)) { - smsc_warn(IFUP, "failed to allocate rx skb %d", i); - goto out_free_rx_skbs; - } - } - - pd->rx_ring_head = 0; - pd->rx_ring_tail = 0; - - smsc9420_reg_write(pd, VLAN1, ETH_P_8021Q); - smsc_dbg(IFUP, "VLAN1 = 0x%08x", smsc9420_reg_read(pd, VLAN1)); - - if (pd->rx_csum) { - /* Enable RX COE */ - u32 coe = smsc9420_reg_read(pd, COE_CR) | RX_COE_EN; - smsc9420_reg_write(pd, COE_CR, coe); - smsc_dbg(IFUP, "COE_CR = 0x%08x", coe); - } - - smsc9420_reg_write(pd, RX_BASE_ADDR, pd->rx_dma_addr); - smsc9420_pci_flush_write(pd); - - return 0; - -out_free_rx_skbs: - smsc9420_free_rx_ring(pd); -out: - return -ENOMEM; -} - -static int smsc9420_open(struct net_device *dev) -{ - struct smsc9420_pdata *pd; - u32 bus_mode, mac_cr, dmac_control, int_cfg, dma_intr_ena, int_ctl; - unsigned long flags; - int result = 0, timeout; - - BUG_ON(!dev); - pd = netdev_priv(dev); - BUG_ON(!pd); - - if (!is_valid_ether_addr(dev->dev_addr)) { - smsc_warn(IFUP, "dev_addr is not a valid MAC address"); - result = -EADDRNOTAVAIL; - goto out_0; - } - - netif_carrier_off(dev); - - /* disable, mask and acknowledge all interrupts */ - spin_lock_irqsave(&pd->int_lock, flags); - int_cfg = smsc9420_reg_read(pd, INT_CFG) & (~INT_CFG_IRQ_EN_); - smsc9420_reg_write(pd, INT_CFG, int_cfg); - smsc9420_reg_write(pd, INT_CTL, 0); - spin_unlock_irqrestore(&pd->int_lock, flags); - smsc9420_reg_write(pd, DMAC_INTR_ENA, 0); - smsc9420_reg_write(pd, INT_STAT, 0xFFFFFFFF); - smsc9420_pci_flush_write(pd); - - if (request_irq(dev->irq, smsc9420_isr, IRQF_SHARED | IRQF_DISABLED, - DRV_NAME, pd)) { - smsc_warn(IFUP, "Unable to use IRQ = %d", dev->irq); - result = -ENODEV; - goto out_0; - } - - smsc9420_dmac_soft_reset(pd); - - /* make sure MAC_CR is sane */ - smsc9420_reg_write(pd, MAC_CR, 0); - - smsc9420_set_mac_address(dev); - - /* Configure GPIO pins to drive LEDs */ - smsc9420_reg_write(pd, GPIO_CFG, - (GPIO_CFG_LED_3_ | GPIO_CFG_LED_2_ | GPIO_CFG_LED_1_)); - - bus_mode = BUS_MODE_DMA_BURST_LENGTH_16; - -#ifdef __BIG_ENDIAN - bus_mode |= BUS_MODE_DBO_; -#endif - - smsc9420_reg_write(pd, BUS_MODE, bus_mode); - - smsc9420_pci_flush_write(pd); - - /* set bus master bridge arbitration priority for Rx and TX DMA */ - smsc9420_reg_write(pd, BUS_CFG, BUS_CFG_RXTXWEIGHT_4_1); - - smsc9420_reg_write(pd, DMAC_CONTROL, - (DMAC_CONTROL_SF_ | DMAC_CONTROL_OSF_)); - - smsc9420_pci_flush_write(pd); - - /* test the IRQ connection to the ISR */ - smsc_dbg(IFUP, "Testing ISR using IRQ %d", dev->irq); - pd->software_irq_signal = false; - - spin_lock_irqsave(&pd->int_lock, flags); - /* configure interrupt deassertion timer and enable interrupts */ - int_cfg = smsc9420_reg_read(pd, INT_CFG) | INT_CFG_IRQ_EN_; - int_cfg &= ~(INT_CFG_INT_DEAS_MASK); - int_cfg |= (INT_DEAS_TIME & INT_CFG_INT_DEAS_MASK); - smsc9420_reg_write(pd, INT_CFG, int_cfg); - - /* unmask software interrupt */ - int_ctl = smsc9420_reg_read(pd, INT_CTL) | INT_CTL_SW_INT_EN_; - smsc9420_reg_write(pd, INT_CTL, int_ctl); - spin_unlock_irqrestore(&pd->int_lock, flags); - smsc9420_pci_flush_write(pd); - - timeout = 1000; - while (timeout--) { - if (pd->software_irq_signal) - break; - msleep(1); - } - - /* disable interrupts */ - spin_lock_irqsave(&pd->int_lock, flags); - int_cfg = smsc9420_reg_read(pd, INT_CFG) & (~INT_CFG_IRQ_EN_); - smsc9420_reg_write(pd, INT_CFG, int_cfg); - spin_unlock_irqrestore(&pd->int_lock, flags); - - if (!pd->software_irq_signal) { - smsc_warn(IFUP, "ISR failed signaling test"); - result = -ENODEV; - goto out_free_irq_1; - } - - smsc_dbg(IFUP, "ISR passed test using IRQ %d", dev->irq); - - result = smsc9420_alloc_tx_ring(pd); - if (result) { - smsc_warn(IFUP, "Failed to Initialize tx dma ring"); - result = -ENOMEM; - goto out_free_irq_1; - } - - result = smsc9420_alloc_rx_ring(pd); - if (result) { - smsc_warn(IFUP, "Failed to Initialize rx dma ring"); - result = -ENOMEM; - goto out_free_tx_ring_2; - } - - result = smsc9420_mii_init(dev); - if (result) { - smsc_warn(IFUP, "Failed to initialize Phy"); - result = -ENODEV; - goto out_free_rx_ring_3; - } - - /* Bring the PHY up */ - phy_start(pd->phy_dev); - - napi_enable(&pd->napi); - - /* start tx and rx */ - mac_cr = smsc9420_reg_read(pd, MAC_CR) | MAC_CR_TXEN_ | MAC_CR_RXEN_; - smsc9420_reg_write(pd, MAC_CR, mac_cr); - - dmac_control = smsc9420_reg_read(pd, DMAC_CONTROL); - dmac_control |= DMAC_CONTROL_ST_ | DMAC_CONTROL_SR_; - smsc9420_reg_write(pd, DMAC_CONTROL, dmac_control); - smsc9420_pci_flush_write(pd); - - dma_intr_ena = smsc9420_reg_read(pd, DMAC_INTR_ENA); - dma_intr_ena |= - (DMAC_INTR_ENA_TX_ | DMAC_INTR_ENA_RX_ | DMAC_INTR_ENA_NIS_); - smsc9420_reg_write(pd, DMAC_INTR_ENA, dma_intr_ena); - smsc9420_pci_flush_write(pd); - - netif_wake_queue(dev); - - smsc9420_reg_write(pd, RX_POLL_DEMAND, 1); - - /* enable interrupts */ - spin_lock_irqsave(&pd->int_lock, flags); - int_cfg = smsc9420_reg_read(pd, INT_CFG) | INT_CFG_IRQ_EN_; - smsc9420_reg_write(pd, INT_CFG, int_cfg); - spin_unlock_irqrestore(&pd->int_lock, flags); - - return 0; - -out_free_rx_ring_3: - smsc9420_free_rx_ring(pd); -out_free_tx_ring_2: - smsc9420_free_tx_ring(pd); -out_free_irq_1: - free_irq(dev->irq, pd); -out_0: - return result; -} - -#ifdef CONFIG_PM - -static int smsc9420_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct smsc9420_pdata *pd = netdev_priv(dev); - u32 int_cfg; - ulong flags; - - /* disable interrupts */ - spin_lock_irqsave(&pd->int_lock, flags); - int_cfg = smsc9420_reg_read(pd, INT_CFG) & (~INT_CFG_IRQ_EN_); - smsc9420_reg_write(pd, INT_CFG, int_cfg); - spin_unlock_irqrestore(&pd->int_lock, flags); - - if (netif_running(dev)) { - netif_tx_disable(dev); - smsc9420_stop_tx(pd); - smsc9420_free_tx_ring(pd); - - napi_disable(&pd->napi); - smsc9420_stop_rx(pd); - smsc9420_free_rx_ring(pd); - - free_irq(dev->irq, pd); - - netif_device_detach(dev); - } - - pci_save_state(pdev); - pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); - pci_disable_device(pdev); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); - - return 0; -} - -static int smsc9420_resume(struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct smsc9420_pdata *pd = netdev_priv(dev); - int err; - - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - - err = pci_enable_device(pdev); - if (err) - return err; - - pci_set_master(pdev); - - err = pci_enable_wake(pdev, 0, 0); - if (err) - smsc_warn(IFUP, "pci_enable_wake failed: %d", err); - - if (netif_running(dev)) { - err = smsc9420_open(dev); - netif_device_attach(dev); - } - return err; -} - -#endif /* CONFIG_PM */ - -static const struct net_device_ops smsc9420_netdev_ops = { - .ndo_open = smsc9420_open, - .ndo_stop = smsc9420_stop, - .ndo_start_xmit = smsc9420_hard_start_xmit, - .ndo_get_stats = smsc9420_get_stats, - .ndo_set_multicast_list = smsc9420_set_multicast_list, - .ndo_do_ioctl = smsc9420_do_ioctl, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = eth_mac_addr, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = smsc9420_poll_controller, -#endif /* CONFIG_NET_POLL_CONTROLLER */ -}; - -static int __devinit -smsc9420_probe(struct pci_dev *pdev, const struct pci_device_id *id) -{ - struct net_device *dev; - struct smsc9420_pdata *pd; - void __iomem *virt_addr; - int result = 0; - u32 id_rev; - - printk(KERN_INFO DRV_DESCRIPTION " version " DRV_VERSION "\n"); - - /* First do the PCI initialisation */ - result = pci_enable_device(pdev); - if (unlikely(result)) { - printk(KERN_ERR "Cannot enable smsc9420\n"); - goto out_0; - } - - pci_set_master(pdev); - - dev = alloc_etherdev(sizeof(*pd)); - if (!dev) { - printk(KERN_ERR "ether device alloc failed\n"); - goto out_disable_pci_device_1; - } - - SET_NETDEV_DEV(dev, &pdev->dev); - - if (!(pci_resource_flags(pdev, SMSC_BAR) & IORESOURCE_MEM)) { - printk(KERN_ERR "Cannot find PCI device base address\n"); - goto out_free_netdev_2; - } - - if ((pci_request_regions(pdev, DRV_NAME))) { - printk(KERN_ERR "Cannot obtain PCI resources, aborting.\n"); - goto out_free_netdev_2; - } - - if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { - printk(KERN_ERR "No usable DMA configuration, aborting.\n"); - goto out_free_regions_3; - } - - virt_addr = ioremap(pci_resource_start(pdev, SMSC_BAR), - pci_resource_len(pdev, SMSC_BAR)); - if (!virt_addr) { - printk(KERN_ERR "Cannot map device registers, aborting.\n"); - goto out_free_regions_3; - } - - /* registers are double mapped with 0 offset for LE and 0x200 for BE */ - virt_addr += LAN9420_CPSR_ENDIAN_OFFSET; - - dev->base_addr = (ulong)virt_addr; - - pd = netdev_priv(dev); - - /* pci descriptors are created in the PCI consistent area */ - pd->rx_ring = pci_alloc_consistent(pdev, - sizeof(struct smsc9420_dma_desc) * RX_RING_SIZE + - sizeof(struct smsc9420_dma_desc) * TX_RING_SIZE, - &pd->rx_dma_addr); - - if (!pd->rx_ring) - goto out_free_io_4; - - /* descriptors are aligned due to the nature of pci_alloc_consistent */ - pd->tx_ring = (struct smsc9420_dma_desc *) - (pd->rx_ring + RX_RING_SIZE); - pd->tx_dma_addr = pd->rx_dma_addr + - sizeof(struct smsc9420_dma_desc) * RX_RING_SIZE; - - pd->pdev = pdev; - pd->dev = dev; - pd->base_addr = virt_addr; - pd->msg_enable = smsc_debug; - pd->rx_csum = true; - - smsc_dbg(PROBE, "lan_base=0x%08lx", (ulong)virt_addr); - - id_rev = smsc9420_reg_read(pd, ID_REV); - switch (id_rev & 0xFFFF0000) { - case 0x94200000: - smsc_info(PROBE, "LAN9420 identified, ID_REV=0x%08X", id_rev); - break; - default: - smsc_warn(PROBE, "LAN9420 NOT identified"); - smsc_warn(PROBE, "ID_REV=0x%08X", id_rev); - goto out_free_dmadesc_5; - } - - smsc9420_dmac_soft_reset(pd); - smsc9420_eeprom_reload(pd); - smsc9420_check_mac_address(dev); - - dev->netdev_ops = &smsc9420_netdev_ops; - dev->ethtool_ops = &smsc9420_ethtool_ops; - dev->irq = pdev->irq; - - netif_napi_add(dev, &pd->napi, smsc9420_rx_poll, NAPI_WEIGHT); - - result = register_netdev(dev); - if (result) { - smsc_warn(PROBE, "error %i registering device", result); - goto out_free_dmadesc_5; - } - - pci_set_drvdata(pdev, dev); - - spin_lock_init(&pd->int_lock); - spin_lock_init(&pd->phy_lock); - - dev_info(&dev->dev, "MAC Address: %pM\n", dev->dev_addr); - - return 0; - -out_free_dmadesc_5: - pci_free_consistent(pdev, sizeof(struct smsc9420_dma_desc) * - (RX_RING_SIZE + TX_RING_SIZE), pd->rx_ring, pd->rx_dma_addr); -out_free_io_4: - iounmap(virt_addr - LAN9420_CPSR_ENDIAN_OFFSET); -out_free_regions_3: - pci_release_regions(pdev); -out_free_netdev_2: - free_netdev(dev); -out_disable_pci_device_1: - pci_disable_device(pdev); -out_0: - return -ENODEV; -} - -static void __devexit smsc9420_remove(struct pci_dev *pdev) -{ - struct net_device *dev; - struct smsc9420_pdata *pd; - - dev = pci_get_drvdata(pdev); - if (!dev) - return; - - pci_set_drvdata(pdev, NULL); - - pd = netdev_priv(dev); - unregister_netdev(dev); - - /* tx_buffers and rx_buffers are freed in stop */ - BUG_ON(pd->tx_buffers); - BUG_ON(pd->rx_buffers); - - BUG_ON(!pd->tx_ring); - BUG_ON(!pd->rx_ring); - - pci_free_consistent(pdev, sizeof(struct smsc9420_dma_desc) * - (RX_RING_SIZE + TX_RING_SIZE), pd->rx_ring, pd->rx_dma_addr); - - iounmap(pd->base_addr - LAN9420_CPSR_ENDIAN_OFFSET); - pci_release_regions(pdev); - free_netdev(dev); - pci_disable_device(pdev); -} - -static struct pci_driver smsc9420_driver = { - .name = DRV_NAME, - .id_table = smsc9420_id_table, - .probe = smsc9420_probe, - .remove = __devexit_p(smsc9420_remove), -#ifdef CONFIG_PM - .suspend = smsc9420_suspend, - .resume = smsc9420_resume, -#endif /* CONFIG_PM */ -}; - -static int __init smsc9420_init_module(void) -{ - smsc_debug = netif_msg_init(debug, SMSC_MSG_DEFAULT); - - return pci_register_driver(&smsc9420_driver); -} - -static void __exit smsc9420_exit_module(void) -{ - pci_unregister_driver(&smsc9420_driver); -} - -module_init(smsc9420_init_module); -module_exit(smsc9420_exit_module); |