diff options
Diffstat (limited to 'drivers/net/skge.c')
| -rw-r--r-- | drivers/net/skge.c | 3385 |
1 files changed, 3385 insertions, 0 deletions
diff --git a/drivers/net/skge.c b/drivers/net/skge.c new file mode 100644 index 000000000000..11e158346acb --- /dev/null +++ b/drivers/net/skge.c @@ -0,0 +1,3385 @@ +/* + * New driver for Marvell Yukon chipset and SysKonnect Gigabit + * Ethernet adapters. Based on earlier sk98lin, e100 and + * FreeBSD if_sk drivers. + * + * This driver intentionally does not support all the features + * of the original driver such as link fail-over and link management because + * those should be done at higher levels. + * + * Copyright (C) 2004, Stephen Hemminger <shemminger@osdl.org> + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/ethtool.h> +#include <linux/pci.h> +#include <linux/if_vlan.h> +#include <linux/ip.h> +#include <linux/delay.h> +#include <linux/crc32.h> +#include <asm/irq.h> + +#include "skge.h" + +#define DRV_NAME "skge" +#define DRV_VERSION "0.6" +#define PFX DRV_NAME " " + +#define DEFAULT_TX_RING_SIZE 128 +#define DEFAULT_RX_RING_SIZE 512 +#define MAX_TX_RING_SIZE 1024 +#define MAX_RX_RING_SIZE 4096 +#define PHY_RETRIES 1000 +#define ETH_JUMBO_MTU 9000 +#define TX_WATCHDOG (5 * HZ) +#define NAPI_WEIGHT 64 +#define BLINK_HZ (HZ/4) +#define LINK_POLL_HZ (HZ/10) + +MODULE_DESCRIPTION("SysKonnect Gigabit Ethernet driver"); +MODULE_AUTHOR("Stephen Hemminger <shemminger@osdl.org>"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); + +static const u32 default_msg + = NETIF_MSG_DRV| NETIF_MSG_PROBE| NETIF_MSG_LINK + | NETIF_MSG_IFUP| NETIF_MSG_IFDOWN; + +static int debug = -1; /* defaults above */ +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); + +static const struct pci_device_id skge_id_table[] = { + { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C940, + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C940B, + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_GE, + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_YU, + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_SYSKONNECT, 0x9E00, /* SK-9Exx */ + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_DLINK, PCI_DEVICE_ID_DLINK_DGE510T, + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_MARVELL, 0x4320, /* Gigabit Ethernet Controller */ + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_MARVELL, 0x5005, /* Marvell (11ab), Belkin */ + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_CNET, PCI_DEVICE_ID_CNET_GIGACARD, + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_LINKSYS, PCI_DEVICE_ID_LINKSYS_EG1032, + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_LINKSYS, PCI_DEVICE_ID_LINKSYS_EG1064, + PCI_ANY_ID, PCI_ANY_ID }, + { 0 } +}; +MODULE_DEVICE_TABLE(pci, skge_id_table); + +static int skge_up(struct net_device *dev); +static int skge_down(struct net_device *dev); +static void skge_tx_clean(struct skge_port *skge); +static void skge_xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val); +static void skge_gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val); +static void genesis_get_stats(struct skge_port *skge, u64 *data); +static void yukon_get_stats(struct skge_port *skge, u64 *data); +static void yukon_init(struct skge_hw *hw, int port); +static void yukon_reset(struct skge_hw *hw, int port); +static void genesis_mac_init(struct skge_hw *hw, int port); +static void genesis_reset(struct skge_hw *hw, int port); + +static const int txqaddr[] = { Q_XA1, Q_XA2 }; +static const int rxqaddr[] = { Q_R1, Q_R2 }; +static const u32 rxirqmask[] = { IS_R1_F, IS_R2_F }; +static const u32 txirqmask[] = { IS_XA1_F, IS_XA2_F }; + +/* Don't need to look at whole 16K. + * last interesting register is descriptor poll timer. + */ +#define SKGE_REGS_LEN (29*128) + +static int skge_get_regs_len(struct net_device *dev) +{ + return SKGE_REGS_LEN; +} + +/* + * Returns copy of control register region + * I/O region is divided into banks and certain regions are unreadable + */ +static void skge_get_regs(struct net_device *dev, struct ethtool_regs *regs, + void *p) +{ + const struct skge_port *skge = netdev_priv(dev); + unsigned long offs; + const void __iomem *io = skge->hw->regs; + static const unsigned long bankmap + = (1<<0) | (1<<2) | (1<<8) | (1<<9) + | (1<<12) | (1<<13) | (1<<14) | (1<<15) | (1<<16) + | (1<<17) | (1<<20) | (1<<21) | (1<<22) | (1<<23) + | (1<<24) | (1<<25) | (1<<26) | (1<<27) | (1<<28); + + regs->version = 1; + for (offs = 0; offs < regs->len; offs += 128) { + u32 len = min_t(u32, 128, regs->len - offs); + + if (bankmap & (1<<(offs/128))) + memcpy_fromio(p + offs, io + offs, len); + else + memset(p + offs, 0, len); + } +} + +/* Wake on Lan only supported on Yukon chps with rev 1 or above */ +static int wol_supported(const struct skge_hw *hw) +{ + return !((hw->chip_id == CHIP_ID_GENESIS || + (hw->chip_id == CHIP_ID_YUKON && chip_rev(hw) == 0))); +} + +static void skge_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) +{ + struct skge_port *skge = netdev_priv(dev); + + wol->supported = wol_supported(skge->hw) ? WAKE_MAGIC : 0; + wol->wolopts = skge->wol ? WAKE_MAGIC : 0; +} + +static int skge_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + + if(wol->wolopts != WAKE_MAGIC && wol->wolopts != 0) + return -EOPNOTSUPP; + + if (wol->wolopts == WAKE_MAGIC && !wol_supported(hw)) + return -EOPNOTSUPP; + + skge->wol = wol->wolopts == WAKE_MAGIC; + + if (skge->wol) { + memcpy_toio(hw->regs + WOL_MAC_ADDR, dev->dev_addr, ETH_ALEN); + + skge_write16(hw, WOL_CTRL_STAT, + WOL_CTL_ENA_PME_ON_MAGIC_PKT | + WOL_CTL_ENA_MAGIC_PKT_UNIT); + } else + skge_write16(hw, WOL_CTRL_STAT, WOL_CTL_DEFAULT); + + return 0; +} + + +static int skge_get_settings(struct net_device *dev, + struct ethtool_cmd *ecmd) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + + ecmd->transceiver = XCVR_INTERNAL; + + if (iscopper(hw)) { + if (hw->chip_id == CHIP_ID_GENESIS) + ecmd->supported = SUPPORTED_1000baseT_Full + | SUPPORTED_1000baseT_Half + | SUPPORTED_Autoneg | SUPPORTED_TP; + else { + ecmd->supported = SUPPORTED_10baseT_Half + | SUPPORTED_10baseT_Full + | SUPPORTED_100baseT_Half + | SUPPORTED_100baseT_Full + | SUPPORTED_1000baseT_Half + | SUPPORTED_1000baseT_Full + | SUPPORTED_Autoneg| SUPPORTED_TP; + + if (hw->chip_id == CHIP_ID_YUKON) + ecmd->supported &= ~SUPPORTED_1000baseT_Half; + + else if (hw->chip_id == CHIP_ID_YUKON_FE) + ecmd->supported &= ~(SUPPORTED_1000baseT_Half + | SUPPORTED_1000baseT_Full); + } + + ecmd->port = PORT_TP; + ecmd->phy_address = hw->phy_addr; + } else { + ecmd->supported = SUPPORTED_1000baseT_Full + | SUPPORTED_FIBRE + | SUPPORTED_Autoneg; + + ecmd->port = PORT_FIBRE; + } + + ecmd->advertising = skge->advertising; + ecmd->autoneg = skge->autoneg; + ecmd->speed = skge->speed; + ecmd->duplex = skge->duplex; + return 0; +} + +static u32 skge_modes(const struct skge_hw *hw) +{ + u32 modes = ADVERTISED_Autoneg + | ADVERTISED_1000baseT_Full | ADVERTISED_1000baseT_Half + | ADVERTISED_100baseT_Full | ADVERTISED_100baseT_Half + | ADVERTISED_10baseT_Full | ADVERTISED_10baseT_Half; + + if (iscopper(hw)) { + modes |= ADVERTISED_TP; + switch(hw->chip_id) { + case CHIP_ID_GENESIS: + modes &= ~(ADVERTISED_100baseT_Full + | ADVERTISED_100baseT_Half + | ADVERTISED_10baseT_Full + | ADVERTISED_10baseT_Half); + break; + + case CHIP_ID_YUKON: + modes &= ~ADVERTISED_1000baseT_Half; + break; + + case CHIP_ID_YUKON_FE: + modes &= ~(ADVERTISED_1000baseT_Half|ADVERTISED_1000baseT_Full); + break; + } + } else { + modes |= ADVERTISED_FIBRE; + modes &= ~ADVERTISED_1000baseT_Half; + } + return modes; +} + +static int skge_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) +{ + struct skge_port *skge = netdev_priv(dev); + const struct skge_hw *hw = skge->hw; + + if (ecmd->autoneg == AUTONEG_ENABLE) { + if (ecmd->advertising & skge_modes(hw)) + return -EINVAL; + } else { + switch(ecmd->speed) { + case SPEED_1000: + if (hw->chip_id == CHIP_ID_YUKON_FE) + return -EINVAL; + break; + case SPEED_100: + case SPEED_10: + if (iscopper(hw) || hw->chip_id == CHIP_ID_GENESIS) + return -EINVAL; + break; + default: + return -EINVAL; + } + } + + skge->autoneg = ecmd->autoneg; + skge->speed = ecmd->speed; + skge->duplex = ecmd->duplex; + skge->advertising = ecmd->advertising; + + if (netif_running(dev)) { + skge_down(dev); + skge_up(dev); + } + return (0); +} + +static void skge_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + struct skge_port *skge = netdev_priv(dev); + + strcpy(info->driver, DRV_NAME); + strcpy(info->version, DRV_VERSION); + strcpy(info->fw_version, "N/A"); + strcpy(info->bus_info, pci_name(skge->hw->pdev)); +} + +static const struct skge_stat { + char name[ETH_GSTRING_LEN]; + u16 xmac_offset; + u16 gma_offset; +} skge_stats[] = { + { "tx_bytes", XM_TXO_OK_HI, GM_TXO_OK_HI }, + { "rx_bytes", XM_RXO_OK_HI, GM_RXO_OK_HI }, + + { "tx_broadcast", XM_TXF_BC_OK, GM_TXF_BC_OK }, + { "rx_broadcast", XM_RXF_BC_OK, GM_RXF_BC_OK }, + { "tx_multicast", XM_TXF_MC_OK, GM_TXF_MC_OK }, + { "rx_multicast", XM_RXF_MC_OK, GM_RXF_MC_OK }, + { "tx_unicast", XM_TXF_UC_OK, GM_TXF_UC_OK }, + { "rx_unicast", XM_RXF_UC_OK, GM_RXF_UC_OK }, + { "tx_mac_pause", XM_TXF_MPAUSE, GM_TXF_MPAUSE }, + { "rx_mac_pause", XM_RXF_MPAUSE, GM_RXF_MPAUSE }, + + { "collisions", XM_TXF_SNG_COL, GM_TXF_SNG_COL }, + { "multi_collisions", XM_TXF_MUL_COL, GM_TXF_MUL_COL }, + { "aborted", XM_TXF_ABO_COL, GM_TXF_ABO_COL }, + { "late_collision", XM_TXF_LAT_COL, GM_TXF_LAT_COL }, + { "fifo_underrun", XM_TXE_FIFO_UR, GM_TXE_FIFO_UR }, + { "fifo_overflow", XM_RXE_FIFO_OV, GM_RXE_FIFO_OV }, + + { "rx_toolong", XM_RXF_LNG_ERR, GM_RXF_LNG_ERR }, + { "rx_jabber", XM_RXF_JAB_PKT, GM_RXF_JAB_PKT }, + { "rx_runt", XM_RXE_RUNT, GM_RXE_FRAG }, + { "rx_too_long", XM_RXF_LNG_ERR, GM_RXF_LNG_ERR }, + { "rx_fcs_error", XM_RXF_FCS_ERR, GM_RXF_FCS_ERR }, +}; + +static int skge_get_stats_count(struct net_device *dev) +{ + return ARRAY_SIZE(skge_stats); +} + +static void skge_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats *stats, u64 *data) +{ + struct skge_port *skge = netdev_priv(dev); + + if (skge->hw->chip_id == CHIP_ID_GENESIS) + genesis_get_stats(skge, data); + else + yukon_get_stats(skge, data); +} + +/* Use hardware MIB variables for critical path statistics and + * transmit feedback not reported at interrupt. + * Other errors are accounted for in interrupt handler. + */ +static struct net_device_stats *skge_get_stats(struct net_device *dev) +{ + struct skge_port *skge = netdev_priv(dev); + u64 data[ARRAY_SIZE(skge_stats)]; + + if (skge->hw->chip_id == CHIP_ID_GENESIS) + genesis_get_stats(skge, data); + else + yukon_get_stats(skge, data); + + skge->net_stats.tx_bytes = data[0]; + skge->net_stats.rx_bytes = data[1]; + skge->net_stats.tx_packets = data[2] + data[4] + data[6]; + skge->net_stats.rx_packets = data[3] + data[5] + data[7]; + skge->net_stats.multicast = data[5] + data[7]; + skge->net_stats.collisions = data[10]; + skge->net_stats.tx_aborted_errors = data[12]; + + return &skge->net_stats; +} + +static void skge_get_strings(struct net_device *dev, u32 stringset, u8 *data) +{ + int i; + + switch(stringset) { + case ETH_SS_STATS: + for (i = 0; i < ARRAY_SIZE(skge_stats); i++) + memcpy(data + i * ETH_GSTRING_LEN, + skge_stats[i].name, ETH_GSTRING_LEN); + break; + } +} + +static void skge_get_ring_param(struct net_device *dev, + struct ethtool_ringparam *p) +{ + struct skge_port *skge = netdev_priv(dev); + + p->rx_max_pending = MAX_RX_RING_SIZE; + p->tx_max_pending = MAX_TX_RING_SIZE; + p->rx_mini_max_pending = 0; + p->rx_jumbo_max_pending = 0; + + p->rx_pending = skge->rx_ring.count; + p->tx_pending = skge->tx_ring.count; + p->rx_mini_pending = 0; + p->rx_jumbo_pending = 0; +} + +static int skge_set_ring_param(struct net_device *dev, + struct ethtool_ringparam *p) +{ + struct skge_port *skge = netdev_priv(dev); + + if (p->rx_pending == 0 || p->rx_pending > MAX_RX_RING_SIZE || + p->tx_pending == 0 || p->tx_pending > MAX_TX_RING_SIZE) + return -EINVAL; + + skge->rx_ring.count = p->rx_pending; + skge->tx_ring.count = p->tx_pending; + + if (netif_running(dev)) { + skge_down(dev); + skge_up(dev); + } + + return 0; +} + +static u32 skge_get_msglevel(struct net_device *netdev) +{ + struct skge_port *skge = netdev_priv(netdev); + return skge->msg_enable; +} + +static void skge_set_msglevel(struct net_device *netdev, u32 value) +{ + struct skge_port *skge = netdev_priv(netdev); + skge->msg_enable = value; +} + +static int skge_nway_reset(struct net_device *dev) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + int port = skge->port; + + if (skge->autoneg != AUTONEG_ENABLE || !netif_running(dev)) + return -EINVAL; + + spin_lock_bh(&hw->phy_lock); + if (hw->chip_id == CHIP_ID_GENESIS) { + genesis_reset(hw, port); + genesis_mac_init(hw, port); + } else { + yukon_reset(hw, port); + yukon_init(hw, port); + } + spin_unlock_bh(&hw->phy_lock); + return 0; +} + +static int skge_set_sg(struct net_device *dev, u32 data) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + + if (hw->chip_id == CHIP_ID_GENESIS && data) + return -EOPNOTSUPP; + return ethtool_op_set_sg(dev, data); +} + +static int skge_set_tx_csum(struct net_device *dev, u32 data) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + + if (hw->chip_id == CHIP_ID_GENESIS && data) + return -EOPNOTSUPP; + + return ethtool_op_set_tx_csum(dev, data); +} + +static u32 skge_get_rx_csum(struct net_device *dev) +{ + struct skge_port *skge = netdev_priv(dev); + + return skge->rx_csum; +} + +/* Only Yukon supports checksum offload. */ +static int skge_set_rx_csum(struct net_device *dev, u32 data) +{ + struct skge_port *skge = netdev_priv(dev); + + if (skge->hw->chip_id == CHIP_ID_GENESIS && data) + return -EOPNOTSUPP; + + skge->rx_csum = data; + return 0; +} + +/* Only Yukon II supports TSO (not implemented yet) */ +static int skge_set_tso(struct net_device *dev, u32 data) +{ + if (data) + return -EOPNOTSUPP; + return 0; +} + +static void skge_get_pauseparam(struct net_device *dev, + struct ethtool_pauseparam *ecmd) +{ + struct skge_port *skge = netdev_priv(dev); + + ecmd->tx_pause = (skge->flow_control == FLOW_MODE_LOC_SEND) + || (skge->flow_control == FLOW_MODE_SYMMETRIC); + ecmd->rx_pause = (skge->flow_control == FLOW_MODE_REM_SEND) + || (skge->flow_control == FLOW_MODE_SYMMETRIC); + + ecmd->autoneg = skge->autoneg; +} + +static int skge_set_pauseparam(struct net_device *dev, + struct ethtool_pauseparam *ecmd) +{ + struct skge_port *skge = netdev_priv(dev); + + skge->autoneg = ecmd->autoneg; + if (ecmd->rx_pause && ecmd->tx_pause) + skge->flow_control = FLOW_MODE_SYMMETRIC; + else if(ecmd->rx_pause && !ecmd->tx_pause) + skge->flow_control = FLOW_MODE_REM_SEND; + else if(!ecmd->rx_pause && ecmd->tx_pause) + skge->flow_control = FLOW_MODE_LOC_SEND; + else + skge->flow_control = FLOW_MODE_NONE; + + if (netif_running(dev)) { + skge_down(dev); + skge_up(dev); + } + return 0; +} + +/* Chip internal frequency for clock calculations */ +static inline u32 hwkhz(const struct skge_hw *hw) +{ + if (hw->chip_id == CHIP_ID_GENESIS) + return 53215; /* or: 53.125 MHz */ + else if (hw->chip_id == CHIP_ID_YUKON_EC) + return 125000; /* or: 125.000 MHz */ + else + return 78215; /* or: 78.125 MHz */ +} + +/* Chip hz to microseconds */ +static inline u32 skge_clk2usec(const struct skge_hw *hw, u32 ticks) +{ + return (ticks * 1000) / hwkhz(hw); +} + +/* Microseconds to chip hz */ +static inline u32 skge_usecs2clk(const struct skge_hw *hw, u32 usec) +{ + return hwkhz(hw) * usec / 1000; +} + +static int skge_get_coalesce(struct net_device *dev, + struct ethtool_coalesce *ecmd) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + int port = skge->port; + + ecmd->rx_coalesce_usecs = 0; + ecmd->tx_coalesce_usecs = 0; + + if (skge_read32(hw, B2_IRQM_CTRL) & TIM_START) { + u32 delay = skge_clk2usec(hw, skge_read32(hw, B2_IRQM_INI)); + u32 msk = skge_read32(hw, B2_IRQM_MSK); + + if (msk & rxirqmask[port]) + ecmd->rx_coalesce_usecs = delay; + if (msk & txirqmask[port]) + ecmd->tx_coalesce_usecs = delay; + } + + return 0; +} + +/* Note: interrupt timer is per board, but can turn on/off per port */ +static int skge_set_coalesce(struct net_device *dev, + struct ethtool_coalesce *ecmd) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + int port = skge->port; + u32 msk = skge_read32(hw, B2_IRQM_MSK); + u32 delay = 25; + + if (ecmd->rx_coalesce_usecs == 0) + msk &= ~rxirqmask[port]; + else if (ecmd->rx_coalesce_usecs < 25 || + ecmd->rx_coalesce_usecs > 33333) + return -EINVAL; + else { + msk |= rxirqmask[port]; + delay = ecmd->rx_coalesce_usecs; + } + + if (ecmd->tx_coalesce_usecs == 0) + msk &= ~txirqmask[port]; + else if (ecmd->tx_coalesce_usecs < 25 || + ecmd->tx_coalesce_usecs > 33333) + return -EINVAL; + else { + msk |= txirqmask[port]; + delay = min(delay, ecmd->rx_coalesce_usecs); + } + + skge_write32(hw, B2_IRQM_MSK, msk); + if (msk == 0) + skge_write32(hw, B2_IRQM_CTRL, TIM_STOP); + else { + skge_write32(hw, B2_IRQM_INI, skge_usecs2clk(hw, delay)); + skge_write32(hw, B2_IRQM_CTRL, TIM_START); + } + return 0; +} + +static void skge_led_on(struct skge_hw *hw, int port) +{ + if (hw->chip_id == CHIP_ID_GENESIS) { + skge_write8(hw, SKGEMAC_REG(port, LNK_LED_REG), LINKLED_ON); + skge_write8(hw, B0_LED, LED_STAT_ON); + + skge_write8(hw, SKGEMAC_REG(port, RX_LED_TST), LED_T_ON); + skge_write32(hw, SKGEMAC_REG(port, RX_LED_VAL), 100); + skge_write8(hw, SKGEMAC_REG(port, RX_LED_CTRL), LED_START); + + switch (hw->phy_type) { + case SK_PHY_BCOM: + skge_xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, + PHY_B_PEC_LED_ON); + break; + case SK_PHY_LONE: + skge_xm_phy_write(hw, port, PHY_LONE_LED_CFG, + 0x0800); + break; + default: + skge_write8(hw, SKGEMAC_REG(port, TX_LED_TST), LED_T_ON); + skge_write32(hw, SKGEMAC_REG(port, TX_LED_VAL), 100); + skge_write8(hw, SKGEMAC_REG(port, TX_LED_CTRL), LED_START); + } + } else { + skge_gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0); + skge_gm_phy_write(hw, port, PHY_MARV_LED_OVER, + PHY_M_LED_MO_DUP(MO_LED_ON) | + PHY_M_LED_MO_10(MO_LED_ON) | + PHY_M_LED_MO_100(MO_LED_ON) | + PHY_M_LED_MO_1000(MO_LED_ON) | + PHY_M_LED_MO_RX(MO_LED_ON)); + } +} + +static void skge_led_off(struct skge_hw *hw, int port) +{ + if (hw->chip_id == CHIP_ID_GENESIS) { + skge_write8(hw, SKGEMAC_REG(port, LNK_LED_REG), LINKLED_OFF); + skge_write8(hw, B0_LED, LED_STAT_OFF); + + skge_write32(hw, SKGEMAC_REG(port, RX_LED_VAL), 0); + skge_write8(hw, SKGEMAC_REG(port, RX_LED_CTRL), LED_T_OFF); + + switch (hw->phy_type) { + case SK_PHY_BCOM: + skge_xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, + PHY_B_PEC_LED_OFF); + break; + case SK_PHY_LONE: + skge_xm_phy_write(hw, port, PHY_LONE_LED_CFG, + PHY_L_LC_LEDT); + break; + default: + skge_write32(hw, SKGEMAC_REG(port, TX_LED_VAL), 0); + skge_write8(hw, SKGEMAC_REG(port, TX_LED_CTRL), LED_T_OFF); + } + } else { + skge_gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0); + skge_gm_phy_write(hw, port, PHY_MARV_LED_OVER, + PHY_M_LED_MO_DUP(MO_LED_OFF) | + PHY_M_LED_MO_10(MO_LED_OFF) | + PHY_M_LED_MO_100(MO_LED_OFF) | + PHY_M_LED_MO_1000(MO_LED_OFF) | + PHY_M_LED_MO_RX(MO_LED_OFF)); + } +} + +static void skge_blink_timer(unsigned long data) +{ + struct skge_port *skge = (struct skge_port *) data; + struct skge_hw *hw = skge->hw; + unsigned long flags; + + spin_lock_irqsave(&hw->phy_lock, flags); + if (skge->blink_on) + skge_led_on(hw, skge->port); + else + skge_led_off(hw, skge->port); + spin_unlock_irqrestore(&hw->phy_lock, flags); + + skge->blink_on = !skge->blink_on; + mod_timer(&skge->led_blink, jiffies + BLINK_HZ); +} + +/* blink LED's for finding board */ +static int skge_phys_id(struct net_device *dev, u32 data) +{ + struct skge_port *skge = netdev_priv(dev); + + if(!data || data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ)) + data = (u32)(MAX_SCHEDULE_TIMEOUT / HZ); + + /* start blinking */ + skge->blink_on = 1; + mod_timer(&skge->led_blink, jiffies+1); + + msleep_interruptible(data * 1000); + del_timer_sync(&skge->led_blink); + + skge_led_off(skge->hw, skge->port); + + return 0; +} + +static struct ethtool_ops skge_ethtool_ops = { + .get_settings = skge_get_settings, + .set_settings = skge_set_settings, + .get_drvinfo = skge_get_drvinfo, + .get_regs_len = skge_get_regs_len, + .get_regs = skge_get_regs, + .get_wol = skge_get_wol, + .set_wol = skge_set_wol, + .get_msglevel = skge_get_msglevel, + .set_msglevel = skge_set_msglevel, + .nway_reset = skge_nway_reset, + .get_link = ethtool_op_get_link, + .get_ringparam = skge_get_ring_param, + .set_ringparam = skge_set_ring_param, + .get_pauseparam = skge_get_pauseparam, + .set_pauseparam = skge_set_pauseparam, + .get_coalesce = skge_get_coalesce, + .set_coalesce = skge_set_coalesce, + .get_tso = ethtool_op_get_tso, + .set_tso = skge_set_tso, + .get_sg = ethtool_op_get_sg, + .set_sg = skge_set_sg, + .get_tx_csum = ethtool_op_get_tx_csum, + .set_tx_csum = skge_set_tx_csum, + .get_rx_csum = skge_get_rx_csum, + .set_rx_csum = skge_set_rx_csum, + .get_strings = skge_get_strings, + .phys_id = skge_phys_id, + .get_stats_count = skge_get_stats_count, + .get_ethtool_stats = skge_get_ethtool_stats, +}; + +/* + * Allocate ring elements and chain them together + * One-to-one association of board descriptors with ring elements + */ +static int skge_ring_alloc(struct skge_ring *ring, void *vaddr, u64 base) +{ + struct skge_tx_desc *d; + struct skge_element *e; + int i; + + ring->start = kmalloc(sizeof(*e)*ring->count, GFP_KERNEL); + if (!ring->start) + return -ENOMEM; + + for (i = 0, e = ring->start, d = vaddr; i < ring->count; i++, e++, d++) { + e->desc = d; + if (i == ring->count - 1) { + e->next = ring->start; + d->next_offset = base; + } else { + e->next = e + 1; + d->next_offset = base + (i+1) * sizeof(*d); + } + } + ring->to_use = ring->to_clean = ring->start; + + return 0; +} + +/* Setup buffer for receiving */ +static inline int skge_rx_alloc(struct skge_port *skge, + struct skge_element *e) +{ + unsigned long bufsize = skge->netdev->mtu + ETH_HLEN; /* VLAN? */ + struct skge_rx_desc *rd = e->desc; + struct sk_buff *skb; + u64 map; + + skb = dev_alloc_skb(bufsize + NET_IP_ALIGN); + if (unlikely(!skb)) { + printk(KERN_DEBUG PFX "%s: out of memory for receive\n", + skge->netdev->name); + return -ENOMEM; + } + + skb->dev = skge->netdev; + skb_reserve(skb, NET_IP_ALIGN); + + map = pci_map_single(skge->hw->pdev, skb->data, bufsize, + PCI_DMA_FROMDEVICE); + + rd->dma_lo = map; + rd->dma_hi = map >> 32; + e->skb = skb; + rd->csum1_start = ETH_HLEN; + rd->csum2_start = ETH_HLEN; + rd->csum1 = 0; + rd->csum2 = 0; + + wmb(); + + rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | bufsize; + pci_unmap_addr_set(e, mapaddr, map); + pci_unmap_len_set(e, maplen, bufsize); + return 0; +} + +/* Free all unused buffers in receive ring, assumes receiver stopped */ +static void skge_rx_clean(struct skge_port *skge) +{ + struct skge_hw *hw = skge->hw; + struct skge_ring *ring = &skge->rx_ring; + struct skge_element *e; + + for (e = ring->to_clean; e != ring->to_use; e = e->next) { + struct skge_rx_desc *rd = e->desc; + rd->control = 0; + + pci_unmap_single(hw->pdev, + pci_unmap_addr(e, mapaddr), + pci_unmap_len(e, maplen), + PCI_DMA_FROMDEVICE); + dev_kfree_skb(e->skb); + e->skb = NULL; + } + ring->to_clean = e; +} + +/* Allocate buffers for receive ring + * For receive: to_use is refill location + * to_clean is next received frame. + * + * if (to_use == to_clean) + * then ring all frames in ring need buffers + * if (to_use->next == to_clean) + * then ring all frames in ring have buffers + */ +static int skge_rx_fill(struct skge_port *skge) +{ + struct skge_ring *ring = &skge->rx_ring; + struct skge_element *e; + int ret = 0; + + for (e = ring->to_use; e->next != ring->to_clean; e = e->next) { + if (skge_rx_alloc(skge, e)) { + ret = 1; + break; + } + + } + ring->to_use = e; + + return ret; +} + +static void skge_link_up(struct skge_port *skge) +{ + netif_carrier_on(skge->netdev); + if (skge->tx_avail > MAX_SKB_FRAGS + 1) + netif_wake_queue(skge->netdev); + + if (netif_msg_link(skge)) + printk(KERN_INFO PFX + "%s: Link is up at %d Mbps, %s duplex, flow control %s\n", + skge->netdev->name, skge->speed, + skge->duplex == DUPLEX_FULL ? "full" : "half", + (skge->flow_control == FLOW_MODE_NONE) ? "none" : + (skge->flow_control == FLOW_MODE_LOC_SEND) ? "tx only" : + (skge->flow_control == FLOW_MODE_REM_SEND) ? "rx only" : + (skge->flow_control == FLOW_MODE_SYMMETRIC) ? "tx and rx" : + "unknown"); +} + +static void skge_link_down(struct skge_port *skge) +{ + netif_carrier_off(skge->netdev); + netif_stop_queue(skge->netdev); + + if (netif_msg_link(skge)) + printk(KERN_INFO PFX "%s: Link is down.\n", skge->netdev->name); +} + +static u16 skge_xm_phy_read(struct skge_hw *hw, int port, u16 reg) +{ + int i; + u16 v; + + skge_xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr); + v = skge_xm_read16(hw, port, XM_PHY_DATA); + if (hw->phy_type != SK_PHY_XMAC) { + for (i = 0; i < PHY_RETRIES; i++) { + udelay(1); + if (skge_xm_read16(hw, port, XM_MMU_CMD) + & XM_MMU_PHY_RDY) + goto ready; + } + + printk(KERN_WARNING PFX "%s: phy read timed out\n", + hw->dev[port]->name); + return 0; + ready: + v = skge_xm_read16(hw, port, XM_PHY_DATA); + } + + return v; +} + +static void skge_xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val) +{ + int i; + + skge_xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr); + for (i = 0; i < PHY_RETRIES; i++) { + if (!(skge_xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY)) + goto ready; + cpu_relax(); + } + printk(KERN_WARNING PFX "%s: phy write failed to come ready\n", + hw->dev[port]->name); + + + ready: + skge_xm_write16(hw, port, XM_PHY_DATA, val); + for (i = 0; i < PHY_RETRIES; i++) { + udelay(1); + if (!(skge_xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY)) + return; + } + printk(KERN_WARNING PFX "%s: phy write timed out\n", + hw->dev[port]->name); +} + +static void genesis_init(struct skge_hw *hw) +{ + /* set blink source counter */ + skge_write32(hw, B2_BSC_INI, (SK_BLK_DUR * SK_FACT_53) / 100); + skge_write8(hw, B2_BSC_CTRL, BSC_START); + + /* configure mac arbiter */ + skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR); + + /* configure mac arbiter timeout values */ + skge_write8(hw, B3_MA_TOINI_RX1, SK_MAC_TO_53); + skge_write8(hw, B3_MA_TOINI_RX2, SK_MAC_TO_53); + skge_write8(hw, B3_MA_TOINI_TX1, SK_MAC_TO_53); + skge_write8(hw, B3_MA_TOINI_TX2, SK_MAC_TO_53); + + skge_write8(hw, B3_MA_RCINI_RX1, 0); + skge_write8(hw, B3_MA_RCINI_RX2, 0); + skge_write8(hw, B3_MA_RCINI_TX1, 0); + skge_write8(hw, B3_MA_RCINI_TX2, 0); + + /* configure packet arbiter timeout */ + skge_write16(hw, B3_PA_CTRL, PA_RST_CLR); + skge_write16(hw, B3_PA_TOINI_RX1, SK_PKT_TO_MAX); + skge_write16(hw, B3_PA_TOINI_TX1, SK_PKT_TO_MAX); + skge_write16(hw, B3_PA_TOINI_RX2, SK_PKT_TO_MAX); + skge_write16(hw, B3_PA_TOINI_TX2, SK_PKT_TO_MAX); +} + +static void genesis_reset(struct skge_hw *hw, int port) +{ + int i; + u64 zero = 0; + + /* reset the statistics module */ + skge_xm_write32(hw, port, XM_GP_PORT, XM_GP_RES_STAT); + skge_xm_write16(hw, port, XM_IMSK, 0xffff); /* disable XMAC IRQs */ + skge_xm_write32(hw, port, XM_MODE, 0); /* clear Mode Reg */ + skge_xm_write16(hw, port, XM_TX_CMD, 0); /* reset TX CMD Reg */ + skge_xm_write16(hw, port, XM_RX_CMD, 0); /* reset RX CMD Reg */ + + /* disable all PHY IRQs */ + if (hw->phy_type == SK_PHY_BCOM) + skge_xm_write16(hw, port, PHY_BCOM_INT_MASK, 0xffff); + + skge_xm_outhash(hw, port, XM_HSM, (u8 *) &zero); + for (i = 0; i < 15; i++) + skge_xm_outaddr(hw, port, XM_EXM(i), (u8 *) &zero); + skge_xm_outhash(hw, port, XM_SRC_CHK, (u8 *) &zero); +} + + +static void genesis_mac_init(struct skge_hw *hw, int port) +{ + struct skge_port *skge = netdev_priv(hw->dev[port]); + int i; + u32 r; + u16 id1; + u16 ctrl1, ctrl2, ctrl3, ctrl4, ctrl5; + + /* magic workaround patterns for Broadcom */ + static const struct { + u16 reg; + u16 val; + } A1hack[] = { + { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1104 }, + { 0x17, 0x0013 }, { 0x15, 0x0404 }, { 0x17, 0x8006 }, + { 0x15, 0x0132 }, { 0x17, 0x8006 }, { 0x15, 0x0232 }, + { 0x17, 0x800D }, { 0x15, 0x000F }, { 0x18, 0x0420 }, + }, C0hack[] = { + { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1204 }, + { 0x17, 0x0013 }, { 0x15, 0x0A04 }, { 0x18, 0x0420 }, + }; + + + /* initialize Rx, Tx and Link LED */ + skge_write8(hw, SKGEMAC_REG(port, LNK_LED_REG), LINKLED_ON); + skge_write8(hw, SKGEMAC_REG(port, LNK_LED_REG), LINKLED_LINKSYNC_ON); + + skge_write8(hw, SKGEMAC_REG(port, RX_LED_CTRL), LED_START); + skge_write8(hw, SKGEMAC_REG(port, TX_LED_CTRL), LED_START); + + /* Unreset the XMAC. */ + skge_write16(hw, SKGEMAC_REG(port, TX_MFF_CTRL1), MFF_CLR_MAC_RST); + + /* + * Perform additional initialization for external PHYs, + * namely for the 1000baseTX cards that use the XMAC's + * GMII mode. + */ + spin_lock_bh(&hw->phy_lock); + if (hw->phy_type != SK_PHY_XMAC) { + /* Take PHY out of reset. */ + r = skge_read32(hw, B2_GP_IO); + if (port == 0) + r |= GP_DIR_0|GP_IO_0; + else + r |= GP_DIR_2|GP_IO_2; + + skge_write32(hw, B2_GP_IO, r); + skge_read32(hw, B2_GP_IO); + + /* Enable GMII mode on the XMAC. */ + skge_xm_write16(hw, port, XM_HW_CFG, XM_HW_GMII_MD); + + id1 = skge_xm_phy_read(hw, port, PHY_XMAC_ID1); + + /* Optimize MDIO transfer by suppressing preamble. */ + skge_xm_write16(hw, port, XM_MMU_CMD, + skge_xm_read16(hw, port, XM_MMU_CMD) + | XM_MMU_NO_PRE); + + if (id1 == PHY_BCOM_ID1_C0) { + /* + * Workaround BCOM Errata for the C0 type. + * Write magic patterns to reserved registers. + */ + for (i = 0; i < ARRAY_SIZE(C0hack); i++) + skge_xm_phy_write(hw, port, + C0hack[i].reg, C0hack[i].val); + + } else if (id1 == PHY_BCOM_ID1_A1) { + /* + * Workaround BCOM Errata for the A1 type. + * Write magic patterns to reserved registers. + */ + for (i = 0; i < ARRAY_SIZE(A1hack); i++) + skge_xm_phy_write(hw, port, + A1hack[i].reg, A1hack[i].val); + } + + /* + * Workaround BCOM Errata (#10523) for all BCom PHYs. + * Disable Power Management after reset. + */ + r = skge_xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL); + skge_xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL, r | PHY_B_AC_DIS_PM); + } + + /* Dummy read */ + skge_xm_read16(hw, port, XM_ISRC); + + r = skge_xm_read32(hw, port, XM_MODE); + skge_xm_write32(hw, port, XM_MODE, r|XM_MD_CSA); + + /* We don't need the FCS appended to the packet. */ + r = skge_xm_read16(hw, port, XM_RX_CMD); + skge_xm_write16(hw, port, XM_RX_CMD, r | XM_RX_STRIP_FCS); + + /* We want short frames padded to 60 bytes. */ + r = skge_xm_read16(hw, port, XM_TX_CMD); + skge_xm_write16(hw, port, XM_TX_CMD, r | XM_TX_AUTO_PAD); + + /* + * Enable the reception of all error frames. This is is + * a necessary evil due to the design of the XMAC. The + * XMAC's receive FIFO is only 8K in size, however jumbo + * frames can be up to 9000 bytes in length. When bad + * frame filtering is enabled, the XMAC's RX FIFO operates + * in 'store and forward' mode. For this to work, the + * entire frame has to fit into the FIFO, but that means + * that jumbo frames larger than 8192 bytes will be + * truncated. Disabling all bad frame filtering causes + * the RX FIFO to operate in streaming mode, in which + * case the XMAC will start transfering frames out of the + * RX FIFO as soon as the FIFO threshold is reached. + */ + r = skge_xm_read32(hw, port, XM_MODE); + skge_xm_write32(hw, port, XM_MODE, + XM_MD_RX_CRCE|XM_MD_RX_LONG|XM_MD_RX_RUNT| + XM_MD_RX_ERR|XM_MD_RX_IRLE); + + skge_xm_outaddr(hw, port, XM_SA, hw->dev[port]->dev_addr); + skge_xm_outaddr(hw, port, XM_EXM(0), hw->dev[port]->dev_addr); + + /* + * Bump up the transmit threshold. This helps hold off transmit + * underruns when we're blasting traffic from both ports at once. + */ + skge_xm_write16(hw, port, XM_TX_THR, 512); + + /* Configure MAC arbiter */ + skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR); + + /* configure timeout values */ + skge_write8(hw, B3_MA_TOINI_RX1, 72); + skge_write8(hw, B3_MA_TOINI_RX2, 72); + skge_write8(hw, B3_MA_TOINI_TX1, 72); + skge_write8(hw, B3_MA_TOINI_TX2, 72); + + skge_write8(hw, B3_MA_RCINI_RX1, 0); + skge_write8(hw, B3_MA_RCINI_RX2, 0); + skge_write8(hw, B3_MA_RCINI_TX1, 0); + skge_write8(hw, B3_MA_RCINI_TX2, 0); + + /* Configure Rx MAC FIFO */ + skge_write8(hw, SKGEMAC_REG(port, RX_MFF_CTRL2), MFF_RST_CLR); + skge_write16(hw, SKGEMAC_REG(port, RX_MFF_CTRL1), MFF_ENA_TIM_PAT); + skge_write8(hw, SKGEMAC_REG(port, RX_MFF_CTRL2), MFF_ENA_OP_MD); + + /* Configure Tx MAC FIFO */ + skge_write8(hw, SKGEMAC_REG(port, TX_MFF_CTRL2), MFF_RST_CLR); + skge_write16(hw, SKGEMAC_REG(port, TX_MFF_CTRL1), MFF_TX_CTRL_DEF); + skge_write8(hw, SKGEMAC_REG(port, TX_MFF_CTRL2), MFF_ENA_OP_MD); + + if (hw->dev[port]->mtu > ETH_DATA_LEN) { + /* Enable frame flushing if jumbo frames used */ + skge_write16(hw, SKGEMAC_REG(port,RX_MFF_CTRL1), MFF_ENA_FLUSH); + } else { + /* enable timeout timers if normal frames */ + skge_write16(hw, B3_PA_CTRL, + port == 0 ? PA_ENA_TO_TX1 : PA_ENA_TO_TX2); + } + + + r = skge_xm_read16(hw, port, XM_RX_CMD); + if (hw->dev[port]->mtu > ETH_DATA_LEN) + skge_xm_write16(hw, port, XM_RX_CMD, r | XM_RX_BIG_PK_OK); + else + skge_xm_write16(hw, port, XM_RX_CMD, r & ~(XM_RX_BIG_PK_OK)); + + switch (hw->phy_type) { + case SK_PHY_XMAC: + if (skge->autoneg == AUTONEG_ENABLE) { + ctrl1 = PHY_X_AN_FD | PHY_X_AN_HD; + + switch (skge->flow_control) { + case FLOW_MODE_NONE: + ctrl1 |= PHY_X_P_NO_PAUSE; + break; + case FLOW_MODE_LOC_SEND: + ctrl1 |= PHY_X_P_ASYM_MD; + break; + case FLOW_MODE_SYMMETRIC: + ctrl1 |= PHY_X_P_SYM_MD; + break; + case FLOW_MODE_REM_SEND: + ctrl1 |= PHY_X_P_BOTH_MD; + break; + } + + skge_xm_phy_write(hw, port, PHY_XMAC_AUNE_ADV, ctrl1); + ctrl2 = PHY_CT_ANE | PHY_CT_RE_CFG; + } else { + ctrl2 = 0; + if (skge->duplex == DUPLEX_FULL) + ctrl2 |= PHY_CT_DUP_MD; + } + + skge_xm_phy_write(hw, port, PHY_XMAC_CTRL, ctrl2); + break; + + case SK_PHY_BCOM: + ctrl1 = PHY_CT_SP1000; + ctrl2 = 0; + ctrl3 = PHY_SEL_TYPE; + ctrl4 = PHY_B_PEC_EN_LTR; + ctrl5 = PHY_B_AC_TX_TST; + + if (skge->autoneg == AUTONEG_ENABLE) { + /* + * Workaround BCOM Errata #1 for the C5 type. + * 1000Base-T Link Acquisition Failure in Slave Mode + * Set Repeater/DTE bit 10 of the 1000Base-T Control Register + */ + ctrl2 |= PHY_B_1000C_RD; + if (skge->advertising & ADVERTISED_1000baseT_Half) + ctrl2 |= PHY_B_1000C_AHD; + if (skge->advertising & ADVERTISED_1000baseT_Full) + ctrl2 |= PHY_B_1000C_AFD; + + /* Set Flow-control capabilities */ + switch (skge->flow_control) { + case FLOW_MODE_NONE: + ctrl3 |= PHY_B_P_NO_PAUSE; + break; + case FLOW_MODE_LOC_SEND: + ctrl3 |= PHY_B_P_ASYM_MD; + break; + case FLOW_MODE_SYMMETRIC: + ctrl3 |= PHY_B_P_SYM_MD; + break; + case FLOW_MODE_REM_SEND: + ctrl3 |= PHY_B_P_BOTH_MD; + break; + } + + /* Restart Auto-negotiation */ + ctrl1 |= PHY_CT_ANE | PHY_CT_RE_CFG; + } else { + if (skge->duplex == DUPLEX_FULL) + ctrl1 |= PHY_CT_DUP_MD; + + ctrl2 |= PHY_B_1000C_MSE; /* set it to Slave */ + } + + skge_xm_phy_write(hw, port, PHY_BCOM_1000T_CTRL, ctrl2); + skge_xm_phy_write(hw, port, PHY_BCOM_AUNE_ADV, ctrl3); + + if (skge->netdev->mtu > ETH_DATA_LEN) { + ctrl4 |= PHY_B_PEC_HIGH_LA; + ctrl5 |= PHY_B_AC_LONG_PACK; + + skge_xm_phy_write(hw, port,PHY_BCOM_AUX_CTRL, ctrl5); + } + + skge_xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, ctrl4); + skge_xm_phy_write(hw, port, PHY_BCOM_CTRL, ctrl1); + break; + } + spin_unlock_bh(&hw->phy_lock); + + /* Clear MIB counters */ + skge_xm_write16(hw, port, XM_STAT_CMD, + XM_SC_CLR_RXC | XM_SC_CLR_TXC); + /* Clear two times according to Errata #3 */ + skge_xm_write16(hw, port, XM_STAT_CMD, + XM_SC_CLR_RXC | XM_SC_CLR_TXC); + + /* Start polling for link status */ + mod_timer(&skge->link_check, jiffies + LINK_POLL_HZ); +} + +static void genesis_stop(struct skge_port *skge) +{ + struct skge_hw *hw = skge->hw; + int port = skge->port; + + /* Clear Tx packet arbiter timeout IRQ */ + skge_write16(hw, B3_PA_CTRL, + port == 0 ? PA_CLR_TO_TX1 : PA_CLR_TO_TX2); + + /* + * If the transfer stucks at the MAC the STOP command will not + * terminate if we don't flush the XMAC's transmit FIFO ! + */ + skge_xm_write32(hw, port, XM_MODE, + skge_xm_read32(hw, port, XM_MODE)|XM_MD_FTF); + + + /* Reset the MAC */ + skge_write16(hw, SKGEMAC_REG(port, TX_MFF_CTRL1), MFF_SET_MAC_RST); + + /* For external PHYs there must be special handling */ + if (hw->phy_type != SK_PHY_XMAC) { + u32 reg = skge_read32(hw, B2_GP_IO); + + if (port == 0) { + reg |= GP_DIR_0; + reg &= ~GP_IO_0; + } else { + reg |= GP_DIR_2; + reg &= ~GP_IO_2; + } + skge_write32(hw, B2_GP_IO, reg); + skge_read32(hw, B2_GP_IO); + } + + skge_xm_write16(hw, port, XM_MMU_CMD, + skge_xm_read16(hw, port, XM_MMU_CMD) + & ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX)); + + skge_xm_read16(hw, port, XM_MMU_CMD); +} + + +static void genesis_get_stats(struct skge_port *skge, u64 *data) +{ + struct skge_hw *hw = skge->hw; + int port = skge->port; + int i; + unsigned long timeout = jiffies + HZ; + + skge_xm_write16(hw, port, + XM_STAT_CMD, XM_SC_SNP_TXC | XM_SC_SNP_RXC); + + /* wait for update to complete */ + while (skge_xm_read16(hw, port, XM_STAT_CMD) + & (XM_SC_SNP_TXC | XM_SC_SNP_RXC)) { + if (time_after(jiffies, timeout)) + break; + udelay(10); + } + + /* special case for 64 bit octet counter */ + data[0] = (u64) skge_xm_read32(hw, port, XM_TXO_OK_HI) << 32 + | skge_xm_read32(hw, port, XM_TXO_OK_LO); + data[1] = (u64) skge_xm_read32(hw, port, XM_RXO_OK_HI) << 32 + | skge_xm_read32(hw, port, XM_RXO_OK_LO); + + for (i = 2; i < ARRAY_SIZE(skge_stats); i++) + data[i] = skge_xm_read32(hw, port, skge_stats[i].xmac_offset); +} + +static void genesis_mac_intr(struct skge_hw *hw, int port) +{ + struct skge_port *skge = netdev_priv(hw->dev[port]); + u16 status = skge_xm_read16(hw, port, XM_ISRC); + + pr_debug("genesis_intr status %x\n", status); + if (hw->phy_type == SK_PHY_XMAC) { + /* LInk down, start polling for state change */ + if (status & XM_IS_INP_ASS) { + skge_xm_write16(hw, port, XM_IMSK, + skge_xm_read16(hw, port, XM_IMSK) | XM_IS_INP_ASS); + mod_timer(&skge->link_check, jiffies + LINK_POLL_HZ); + } + else if (status & XM_IS_AND) + mod_timer(&skge->link_check, jiffies + LINK_POLL_HZ); + } + + if (status & XM_IS_TXF_UR) { + skge_xm_write32(hw, port, XM_MODE, XM_MD_FTF); + ++skge->net_stats.tx_fifo_errors; + } + if (status & XM_IS_RXF_OV) { + skge_xm_write32(hw, port, XM_MODE, XM_MD_FRF); + ++skge->net_stats.rx_fifo_errors; + } +} + +static void skge_gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val) +{ + int i; + + skge_gma_write16(hw, port, GM_SMI_DATA, val); + skge_gma_write16(hw, port, GM_SMI_CTRL, + GM_SMI_CT_PHY_AD(hw->phy_addr) | GM_SMI_CT_REG_AD(reg)); + for (i = 0; i < PHY_RETRIES; i++) { + udelay(1); + + if (!(skge_gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY)) + break; + } +} + +static u16 skge_gm_phy_read(struct skge_hw *hw, int port, u16 reg) +{ + int i; + + skge_gma_write16(hw, port, GM_SMI_CTRL, + GM_SMI_CT_PHY_AD(hw->phy_addr) + | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD); + + for (i = 0; i < PHY_RETRIES; i++) { + udelay(1); + if (skge_gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL) + goto ready; + } + + printk(KERN_WARNING PFX "%s: phy read timeout\n", + hw->dev[port]->name); + return 0; + ready: + return skge_gma_read16(hw, port, GM_SMI_DATA); +} + +static void genesis_link_down(struct skge_port *skge) +{ + struct skge_hw *hw = skge->hw; + int port = skge->port; + + pr_debug("genesis_link_down\n"); + + skge_xm_write16(hw, port, XM_MMU_CMD, + skge_xm_read16(hw, port, XM_MMU_CMD) + & ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX)); + + /* dummy read to ensure writing */ + (void) skge_xm_read16(hw, port, XM_MMU_CMD); + + skge_link_down(skge); +} + +static void genesis_link_up(struct skge_port *skge) +{ + struct skge_hw *hw = skge->hw; + int port = skge->port; + u16 cmd; + u32 mode, msk; + + pr_debug("genesis_link_up\n"); + cmd = skge_xm_read16(hw, port, XM_MMU_CMD); + + /* + * enabling pause frame reception is required for 1000BT + * because the XMAC is not reset if the link is going down + */ + if (skge->flow_control == FLOW_MODE_NONE || + skge->flow_control == FLOW_MODE_LOC_SEND) + cmd |= XM_MMU_IGN_PF; + else + /* Enable Pause Frame Reception */ + cmd &= ~XM_MMU_IGN_PF; + + skge_xm_write16(hw, port, XM_MMU_CMD, cmd); + + mode = skge_xm_read32(hw, port, XM_MODE); + if (skge->flow_control == FLOW_MODE_SYMMETRIC || + skge->flow_control == FLOW_MODE_LOC_SEND) { + /* + * Configure Pause Frame Generation + * Use internal and external Pause Frame Generation. + * Sending pause frames is edge triggered. + * Send a Pause frame with the maximum pause time if + * internal oder external FIFO full condition occurs. + * Send a zero pause time frame to re-start transmission. + */ + /* XM_PAUSE_DA = '010000C28001' (default) */ + /* XM_MAC_PTIME = 0xffff (maximum) */ + /* remember this value is defined in big endian (!) */ + skge_xm_write16(hw, port, XM_MAC_PTIME, 0xffff); + + mode |= XM_PAUSE_MODE; + skge_write16(hw, SKGEMAC_REG(port, RX_MFF_CTRL1), MFF_ENA_PAUSE); + } else { + /* + * disable pause frame generation is required for 1000BT + * because the XMAC is not reset if the link is going down + */ + /* Disable Pause Mode in Mode Register */ + mode &= ~XM_PAUSE_MODE; + + skge_write16(hw, SKGEMAC_REG(port, RX_MFF_CTRL1), MFF_DIS_PAUSE); + } + + skge_xm_write32(hw, port, XM_MODE, mode); + + msk = XM_DEF_MSK; + if (hw->phy_type != SK_PHY_XMAC) + msk |= XM_IS_INP_ASS; /* disable GP0 interrupt bit */ + + skge_xm_write16(hw, port, XM_IMSK, msk); + skge_xm_read16(hw, port, XM_ISRC); + + /* get MMU Command Reg. */ + cmd = skge_xm_read16(hw, port, XM_MMU_CMD); + if (hw->phy_type != SK_PHY_XMAC && skge->duplex == DUPLEX_FULL) + cmd |= XM_MMU_GMII_FD; + + if (hw->phy_type == SK_PHY_BCOM) { + /* + * Workaround BCOM Errata (#10523) for all BCom Phys + * Enable Power Management after link up + */ + skge_xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL, + skge_xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL) + & ~PHY_B_AC_DIS_PM); + skge_xm_phy_write(hw, port, PHY_BCOM_INT_MASK, + PHY_B_DEF_MSK); + } + + /* enable Rx/Tx */ + skge_xm_write16(hw, port, XM_MMU_CMD, + cmd | XM_MMU_ENA_RX | XM_MMU_ENA_TX); + skge_link_up(skge); +} + + +static void genesis_bcom_intr(struct skge_port *skge) +{ + struct skge_hw *hw = skge->hw; + int port = skge->port; + u16 stat = skge_xm_phy_read(hw, port, PHY_BCOM_INT_STAT); + + pr_debug("genesis_bcom intr stat=%x\n", stat); + + /* Workaround BCom Errata: + * enable and disable loopback mode if "NO HCD" occurs. + */ + if (stat & PHY_B_IS_NO_HDCL) { + u16 ctrl = skge_xm_phy_read(hw, port, PHY_BCOM_CTRL); + skge_xm_phy_write(hw, port, PHY_BCOM_CTRL, + ctrl | PHY_CT_LOOP); + skge_xm_phy_write(hw, port, PHY_BCOM_CTRL, + ctrl & ~PHY_CT_LOOP); + } + + stat = skge_xm_phy_read(hw, port, PHY_BCOM_STAT); + if (stat & (PHY_B_IS_AN_PR | PHY_B_IS_LST_CHANGE)) { + u16 aux = skge_xm_phy_read(hw, port, PHY_BCOM_AUX_STAT); + if ( !(aux & PHY_B_AS_LS) && netif_carrier_ok(skge->netdev)) + genesis_link_down(skge); + + else if (stat & PHY_B_IS_LST_CHANGE) { + if (aux & PHY_B_AS_AN_C) { + switch (aux & PHY_B_AS_AN_RES_MSK) { + case PHY_B_RES_1000FD: + skge->duplex = DUPLEX_FULL; + break; + case PHY_B_RES_1000HD: + skge->duplex = DUPLEX_HALF; + break; + } + + switch (aux & PHY_B_AS_PAUSE_MSK) { + case PHY_B_AS_PAUSE_MSK: + skge->flow_control = FLOW_MODE_SYMMETRIC; + break; + case PHY_B_AS_PRR: + skge->flow_control = FLOW_MODE_REM_SEND; + break; + case PHY_B_AS_PRT: + skge->flow_control = FLOW_MODE_LOC_SEND; + break; + default: + skge->flow_control = FLOW_MODE_NONE; + } + skge->speed = SPEED_1000; + } + genesis_link_up(skge); + } + else + mod_timer(&skge->link_check, jiffies + LINK_POLL_HZ); + } +} + +/* Perodic poll of phy status to check for link transistion */ +static void skge_link_timer(unsigned long __arg) +{ + struct skge_port *skge = (struct skge_port *) __arg; + struct skge_hw *hw = skge->hw; + int port = skge->port; + + if (hw->chip_id != CHIP_ID_GENESIS || !netif_running(skge->netdev)) + return; + + spin_lock_bh(&hw->phy_lock); + if (hw->phy_type == SK_PHY_BCOM) + genesis_bcom_intr(skge); + else { + int i; + for (i = 0; i < 3; i++) + if (skge_xm_read16(hw, port, XM_ISRC) & XM_IS_INP_ASS) + break; + + if (i == 3) + mod_timer(&skge->link_check, jiffies + LINK_POLL_HZ); + else + genesis_link_up(skge); + } + spin_unlock_bh(&hw->phy_lock); +} + +/* Marvell Phy Initailization */ +static void yukon_init(struct skge_hw *hw, int port) +{ + struct skge_port *skge = netdev_priv(hw->dev[port]); + u16 ctrl, ct1000, adv; + u16 ledctrl, ledover; + + pr_debug("yukon_init\n"); + if (skge->autoneg == AUTONEG_ENABLE) { + u16 ectrl = skge_gm_phy_read(hw, port, PHY_MARV_EXT_CTRL); + + ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK | + PHY_M_EC_MAC_S_MSK); + ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ); + + /* on PHY 88E1111 there is a change for downshift control */ + if (hw->chip_id == CHIP_ID_YUKON_EC) + ectrl |= PHY_M_EC_M_DSC_2(0) | PHY_M_EC_DOWN_S_ENA; + else + ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1); + + skge_gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl); + } + + ctrl = skge_gm_phy_read(hw, port, PHY_MARV_CTRL); + if (skge->autoneg == AUTONEG_DISABLE) + ctrl &= ~PHY_CT_ANE; + + ctrl |= PHY_CT_RESET; + skge_gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl); + + ctrl = 0; + ct1000 = 0; + adv = PHY_SEL_TYPE; + + if (skge->autoneg == AUTONEG_ENABLE) { + if (iscopper(hw)) { + if (skge->advertising & ADVERTISED_1000baseT_Full) + ct1000 |= PHY_M_1000C_AFD; + if (skge->advertising & ADVERTISED_1000baseT_Half) + ct1000 |= PHY_M_1000C_AHD; + if (skge->advertising & ADVERTISED_100baseT_Full) + adv |= PHY_M_AN_100_FD; + if (skge->advertising & ADVERTISED_100baseT_Half) + adv |= PHY_M_AN_100_HD; + if (skge->advertising & ADVERTISED_10baseT_Full) + adv |= PHY_M_AN_10_FD; + if (skge->advertising & ADVERTISED_10baseT_Half) + adv |= PHY_M_AN_10_HD; + + /* Set Flow-control capabilities */ + switch (skge->flow_control) { + case FLOW_MODE_NONE: + adv |= PHY_B_P_NO_PAUSE; + break; + case FLOW_MODE_LOC_SEND: + adv |= PHY_B_P_ASYM_MD; + break; + case FLOW_MODE_SYMMETRIC: + adv |= PHY_B_P_SYM_MD; + break; + case FLOW_MODE_REM_SEND: + adv |= PHY_B_P_BOTH_MD; + break; + } + } else { /* special defines for FIBER (88E1011S only) */ + adv |= PHY_M_AN_1000X_AHD | PHY_M_AN_1000X_AFD; + + /* Set Flow-control capabilities */ + switch (skge->flow_control) { + case FLOW_MODE_NONE: + adv |= PHY_M_P_NO_PAUSE_X; + break; + case FLOW_MODE_LOC_SEND: + adv |= PHY_M_P_ASYM_MD_X; + break; + case FLOW_MODE_SYMMETRIC: + adv |= PHY_M_P_SYM_MD_X; + break; + case FLOW_MODE_REM_SEND: + adv |= PHY_M_P_BOTH_MD_X; + break; + } + } + /* Restart Auto-negotiation */ + ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG; + } else { + /* forced speed/duplex settings */ + ct1000 = PHY_M_1000C_MSE; + + if (skge->duplex == DUPLEX_FULL) + ctrl |= PHY_CT_DUP_MD; + + switch (skge->speed) { + case SPEED_1000: + ctrl |= PHY_CT_SP1000; + break; + case SPEED_100: + ctrl |= PHY_CT_SP100; + break; + } + + ctrl |= PHY_CT_RESET; + } + + if (hw->chip_id != CHIP_ID_YUKON_FE) + skge_gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000); + + skge_gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv); + skge_gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl); + + /* Setup Phy LED's */ + ledctrl = PHY_M_LED_PULS_DUR(PULS_170MS); + ledover = 0; + + if (hw->chip_id == CHIP_ID_YUKON_FE) { + /* on 88E3082 these bits are at 11..9 (shifted left) */ + ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) << 1; + + skge_gm_phy_write(hw, port, PHY_MARV_FE_LED_PAR, + ((skge_gm_phy_read(hw, port, PHY_MARV_FE_LED_PAR) + + & ~PHY_M_FELP_LED1_MSK) + | PHY_M_FELP_LED1_CTRL(LED_PAR_CTRL_ACT_BL))); + } else { + /* set Tx LED (LED_TX) to blink mode on Rx OR Tx activity */ + ledctrl |= PHY_M_LED_BLINK_RT(BLINK_84MS) | PHY_M_LEDC_TX_CTRL; + + /* turn off the Rx LED (LED_RX) */ + ledover |= PHY_M_LED_MO_RX(MO_LED_OFF); + } + + /* disable blink mode (LED_DUPLEX) on collisions */ + ctrl |= PHY_M_LEDC_DP_CTRL; + skge_gm_phy_write(hw, port, PHY_MARV_LED_CTRL, ledctrl); + + if (skge->autoneg == AUTONEG_DISABLE || skge->speed == SPEED_100) { + /* turn on 100 Mbps LED (LED_LINK100) */ + ledover |= PHY_M_LED_MO_100(MO_LED_ON); + } + + if (ledover) + skge_gm_phy_write(hw, port, PHY_MARV_LED_OVER, ledover); + + /* Enable phy interrupt on autonegotiation complete (or link up) */ + if (skge->autoneg == AUTONEG_ENABLE) + skge_gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_COMPL); + else + skge_gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK); +} + +static void yukon_reset(struct skge_hw *hw, int port) +{ + skge_gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);/* disable PHY IRQs */ + skge_gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */ + skge_gma_write16(hw, port, GM_MC_ADDR_H2, 0); + skge_gma_write16(hw, port, GM_MC_ADDR_H3, 0); + skge_gma_write16(hw, port, GM_MC_ADDR_H4, 0); + + skge_gma_write16(hw, port, GM_RX_CTRL, + skge_gma_read16(hw, port, GM_RX_CTRL) + | GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA); +} + +static void yukon_mac_init(struct skge_hw *hw, int port) +{ + struct skge_port *skge = netdev_priv(hw->dev[port]); + int i; + u32 reg; + const u8 *addr = hw->dev[port]->dev_addr; + + /* WA code for COMA mode -- set PHY reset */ + if (hw->chip_id == CHIP_ID_YUKON_LITE && + chip_rev(hw) == CHIP_REV_YU_LITE_A3) + skge_write32(hw, B2_GP_IO, + (skge_read32(hw, B2_GP_IO) | GP_DIR_9 | GP_IO_9)); + + /* hard reset */ + skge_write32(hw, SKGEMAC_REG(port, GPHY_CTRL), GPC_RST_SET); + skge_write32(hw, SKGEMAC_REG(port, GMAC_CTRL), GMC_RST_SET); + + /* WA code for COMA mode -- clear PHY reset */ + if (hw->chip_id == CHIP_ID_YUKON_LITE && + chip_rev(hw) == CHIP_REV_YU_LITE_A3) + skge_write32(hw, B2_GP_IO, + (skge_read32(hw, B2_GP_IO) | GP_DIR_9) + & ~GP_IO_9); + + /* Set hardware config mode */ + reg = GPC_INT_POL_HI | GPC_DIS_FC | GPC_DIS_SLEEP | + GPC_ENA_XC | GPC_ANEG_ADV_ALL_M | GPC_ENA_PAUSE; + reg |= iscopper(hw) ? GPC_HWCFG_GMII_COP : GPC_HWCFG_GMII_FIB; + + /* Clear GMC reset */ + skge_write32(hw, SKGEMAC_REG(port, GPHY_CTRL), reg | GPC_RST_SET); + skge_write32(hw, SKGEMAC_REG(port, GPHY_CTRL), reg | GPC_RST_CLR); + skge_write32(hw, SKGEMAC_REG(port, GMAC_CTRL), GMC_PAUSE_ON | GMC_RST_CLR); + if (skge->autoneg == AUTONEG_DISABLE) { + reg = GM_GPCR_AU_ALL_DIS; + skge_gma_write16(hw, port, GM_GP_CTRL, + skge_gma_read16(hw, port, GM_GP_CTRL) | reg); + + switch (skge->speed) { + case SPEED_1000: + reg |= GM_GPCR_SPEED_1000; + /* fallthru */ + case SPEED_100: + reg |= GM_GPCR_SPEED_100; + } + + if (skge->duplex == DUPLEX_FULL) + reg |= GM_GPCR_DUP_FULL; + } else + reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL; + switch (skge->flow_control) { + case FLOW_MODE_NONE: + skge_write32(hw, SKGEMAC_REG(port, GMAC_CTRL), GMC_PAUSE_OFF); + reg |= GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS; + break; + case FLOW_MODE_LOC_SEND: + /* disable Rx flow-control */ + reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS; + } + + skge_gma_write16(hw, port, GM_GP_CTRL, reg); + skge_read16(hw, GMAC_IRQ_SRC); + + spin_lock_bh(&hw->phy_lock); + yukon_init(hw, port); + spin_unlock_bh(&hw->phy_lock); + + /* MIB clear */ + reg = skge_gma_read16(hw, port, GM_PHY_ADDR); + skge_gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR); + + for (i = 0; i < GM_MIB_CNT_SIZE; i++) + skge_gma_read16(hw, port, GM_MIB_CNT_BASE + 8*i); + skge_gma_write16(hw, port, GM_PHY_ADDR, reg); + + /* transmit control */ + skge_gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF)); + + /* receive control reg: unicast + multicast + no FCS */ + skge_gma_write16(hw, port, GM_RX_CTRL, + GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA); + + /* transmit flow control */ + skge_gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff); + + /* transmit parameter */ + skge_gma_write16(hw, port, GM_TX_PARAM, + TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) | + TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) | + TX_IPG_JAM_DATA(TX_IPG_JAM_DEF)); + + /* serial mode register */ + reg = GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF); + if (hw->dev[port]->mtu > 1500) + reg |= GM_SMOD_JUMBO_ENA; + + skge_gma_write16(hw, port, GM_SERIAL_MODE, reg); + + /* physical address: used for pause frames */ + skge_gm_set_addr(hw, port, GM_SRC_ADDR_1L, addr); + /* virtual address for data */ + skge_gm_set_addr(hw, port, GM_SRC_ADDR_2L, addr); + + /* enable interrupt mask for counter overflows */ + skge_gma_write16(hw, port, GM_TX_IRQ_MSK, 0); + skge_gma_write16(hw, port, GM_RX_IRQ_MSK, 0); + skge_gma_write16(hw, port, GM_TR_IRQ_MSK, 0); + + /* Initialize Mac Fifo */ + + /* Configure Rx MAC FIFO */ + skge_write16(hw, SKGEMAC_REG(port, RX_GMF_FL_MSK), RX_FF_FL_DEF_MSK); + reg = GMF_OPER_ON | GMF_RX_F_FL_ON; + if (hw->chip_id == CHIP_ID_YUKON_LITE && + chip_rev(hw) == CHIP_REV_YU_LITE_A3) + reg &= ~GMF_RX_F_FL_ON; + skge_write8(hw, SKGEMAC_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR); + skge_write16(hw, SKGEMAC_REG(port, RX_GMF_CTRL_T), reg); + skge_write16(hw, SKGEMAC_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF); + + /* Configure Tx MAC FIFO */ + skge_write8(hw, SKGEMAC_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR); + skge_write16(hw, SKGEMAC_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON); +} + +static void yukon_stop(struct skge_port *skge) +{ + struct skge_hw *hw = skge->hw; + int port = skge->port; + + if (hw->chip_id == CHIP_ID_YUKON_LITE && + chip_rev(hw) == CHIP_REV_YU_LITE_A3) { + skge_write32(hw, B2_GP_IO, + skge_read32(hw, B2_GP_IO) | GP_DIR_9 | GP_IO_9); + } + + skge_gma_write16(hw, port, GM_GP_CTRL, + skge_gma_read16(hw, port, GM_GP_CTRL) + & ~(GM_GPCR_RX_ENA|GM_GPCR_RX_ENA)); + skge_gma_read16(hw, port, GM_GP_CTRL); + + /* set GPHY Control reset */ + skge_gma_write32(hw, port, GPHY_CTRL, GPC_RST_SET); + skge_gma_write32(hw, port, GMAC_CTRL, GMC_RST_SET); +} + +static void yukon_get_stats(struct skge_port *skge, u64 *data) +{ + struct skge_hw *hw = skge->hw; + int port = skge->port; + int i; + + data[0] = (u64) skge_gma_read32(hw, port, GM_TXO_OK_HI) << 32 + | skge_gma_read32(hw, port, GM_TXO_OK_LO); + data[1] = (u64) skge_gma_read32(hw, port, GM_RXO_OK_HI) << 32 + | skge_gma_read32(hw, port, GM_RXO_OK_LO); + + for (i = 2; i < ARRAY_SIZE(skge_stats); i++) + data[i] = skge_gma_read32(hw, port, + skge_stats[i].gma_offset); +} + +static void yukon_mac_intr(struct skge_hw *hw, int port) +{ + struct skge_port *skge = netdev_priv(hw->dev[port]); + u8 status = skge_read8(hw, SKGEMAC_REG(port, GMAC_IRQ_SRC)); + + pr_debug("yukon_intr status %x\n", status); + if (status & GM_IS_RX_FF_OR) { + ++skge->net_stats.rx_fifo_errors; + skge_gma_write8(hw, port, RX_GMF_CTRL_T, GMF_CLI_RX_FO); + } + if (status & GM_IS_TX_FF_UR) { + ++skge->net_stats.tx_fifo_errors; + skge_gma_write8(hw, port, TX_GMF_CTRL_T, GMF_CLI_TX_FU); + } + +} + +static u16 yukon_speed(const struct skge_hw *hw, u16 aux) +{ + if (hw->chip_id == CHIP_ID_YUKON_FE) + return (aux & PHY_M_PS_SPEED_100) ? SPEED_100 : SPEED_10; + + switch(aux & PHY_M_PS_SPEED_MSK) { + case PHY_M_PS_SPEED_1000: + return SPEED_1000; + case PHY_M_PS_SPEED_100: + return SPEED_100; + default: + return SPEED_10; + } +} + +static void yukon_link_up(struct skge_port *skge) +{ + struct skge_hw *hw = skge->hw; + int port = skge->port; + u16 reg; + + pr_debug("yukon_link_up\n"); + + /* Enable Transmit FIFO Underrun */ + skge_write8(hw, GMAC_IRQ_MSK, GMAC_DEF_MSK); + + reg = skge_gma_read16(hw, port, GM_GP_CTRL); + if (skge->duplex == DUPLEX_FULL || skge->autoneg == AUTONEG_ENABLE) + reg |= GM_GPCR_DUP_FULL; + + /* enable Rx/Tx */ + reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA; + skge_gma_write16(hw, port, GM_GP_CTRL, reg); + + skge_gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK); + skge_link_up(skge); +} + +static void yukon_link_down(struct skge_port *skge) +{ + struct skge_hw *hw = skge->hw; + int port = skge->port; + + pr_debug("yukon_link_down\n"); + skge_gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0); + skge_gm_phy_write(hw, port, GM_GP_CTRL, + skge_gm_phy_read(hw, port, GM_GP_CTRL) + & ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA)); + + if (hw->chip_id != CHIP_ID_YUKON_FE && + skge->flow_control == FLOW_MODE_REM_SEND) { + /* restore Asymmetric Pause bit */ + skge_gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, + skge_gm_phy_read(hw, port, + PHY_MARV_AUNE_ADV) + | PHY_M_AN_ASP); + + } + + yukon_reset(hw, port); + skge_link_down(skge); + + yukon_init(hw, port); +} + +static void yukon_phy_intr(struct skge_port *skge) +{ + struct skge_hw *hw = skge->hw; + int port = skge->port; + const char *reason = NULL; + u16 istatus, phystat; + + istatus = skge_gm_phy_read(hw, port, PHY_MARV_INT_STAT); + phystat = skge_gm_phy_read(hw, port, PHY_MARV_PHY_STAT); + pr_debug("yukon phy intr istat=%x phy_stat=%x\n", istatus, phystat); + + if (istatus & PHY_M_IS_AN_COMPL) { + if (skge_gm_phy_read(hw, port, PHY_MARV_AUNE_LP) + & PHY_M_AN_RF) { + reason = "remote fault"; + goto failed; + } + + if (!(hw->chip_id == CHIP_ID_YUKON_FE || hw->chip_id == CHIP_ID_YUKON_EC) + && (skge_gm_phy_read(hw, port, PHY_MARV_1000T_STAT) + & PHY_B_1000S_MSF)) { + reason = "master/slave fault"; + goto failed; + } + + if (!(phystat & PHY_M_PS_SPDUP_RES)) { + reason = "speed/duplex"; + goto failed; + } + + skge->duplex = (phystat & PHY_M_PS_FULL_DUP) + ? DUPLEX_FULL : DUPLEX_HALF; + skge->speed = yukon_speed(hw, phystat); + + /* Tx & Rx Pause Enabled bits are at 9..8 */ + if (hw->chip_id == CHIP_ID_YUKON_XL) + phystat >>= 6; + + /* We are using IEEE 802.3z/D5.0 Table 37-4 */ + switch (phystat & PHY_M_PS_PAUSE_MSK) { + case PHY_M_PS_PAUSE_MSK: + skge->flow_control = FLOW_MODE_SYMMETRIC; + break; + case PHY_M_PS_RX_P_EN: + skge->flow_control = FLOW_MODE_REM_SEND; + break; + case PHY_M_PS_TX_P_EN: + skge->flow_control = FLOW_MODE_LOC_SEND; + break; + default: + skge->flow_control = FLOW_MODE_NONE; + } + + if (skge->flow_control == FLOW_MODE_NONE || + (skge->speed < SPEED_1000 && skge->duplex == DUPLEX_HALF)) + skge_write8(hw, SKGEMAC_REG(port, GMAC_CTRL), GMC_PAUSE_OFF); + else + skge_write8(hw, SKGEMAC_REG(port, GMAC_CTRL), GMC_PAUSE_ON); + yukon_link_up(skge); + return; + } + + if (istatus & PHY_M_IS_LSP_CHANGE) + skge->speed = yukon_speed(hw, phystat); + + if (istatus & PHY_M_IS_DUP_CHANGE) + skge->duplex = (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF; + if (istatus & PHY_M_IS_LST_CHANGE) { + if (phystat & PHY_M_PS_LINK_UP) + yukon_link_up(skge); + else + yukon_link_down(skge); + } + return; + failed: + printk(KERN_ERR PFX "%s: autonegotiation failed (%s)\n", + skge->netdev->name, reason); + + /* XXX restart autonegotiation? */ +} + +static void skge_ramset(struct skge_hw *hw, u16 q, u32 start, size_t len) +{ + u32 end; + + start /= 8; + len /= 8; + end = start + len - 1; + + skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR); + skge_write32(hw, RB_ADDR(q, RB_START), start); + skge_write32(hw, RB_ADDR(q, RB_WP), start); + skge_write32(hw, RB_ADDR(q, RB_RP), start); + skge_write32(hw, RB_ADDR(q, RB_END), end); + + if (q == Q_R1 || q == Q_R2) { + /* Set thresholds on receive queue's */ + skge_write32(hw, RB_ADDR(q, RB_RX_UTPP), + start + (2*len)/3); + skge_write32(hw, RB_ADDR(q, RB_RX_LTPP), + start + (len/3)); + } else { + /* Enable store & forward on Tx queue's because + * Tx FIFO is only 4K on Genesis and 1K on Yukon + */ + skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD); + } + + skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD); +} + +/* Setup Bus Memory Interface */ +static void skge_qset(struct skge_port *skge, u16 q, + const struct skge_element *e) +{ + struct skge_hw *hw = skge->hw; + u32 watermark = 0x600; + u64 base = skge->dma + (e->desc - skge->mem); + + /* optimization to reduce window on 32bit/33mhz */ + if ((skge_read16(hw, B0_CTST) & (CS_BUS_CLOCK | CS_BUS_SLOT_SZ)) == 0) + watermark /= 2; + + skge_write32(hw, Q_ADDR(q, Q_CSR), CSR_CLR_RESET); + skge_write32(hw, Q_ADDR(q, Q_F), watermark); + skge_write32(hw, Q_ADDR(q, Q_DA_H), (u32)(base >> 32)); + skge_write32(hw, Q_ADDR(q, Q_DA_L), (u32)base); +} + +static int skge_up(struct net_device *dev) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + int port = skge->port; + u32 chunk, ram_addr; + size_t rx_size, tx_size; + int err; + + if (netif_msg_ifup(skge)) + printk(KERN_INFO PFX "%s: enabling interface\n", dev->name); + + rx_size = skge->rx_ring.count * sizeof(struct skge_rx_desc); + tx_size = skge->tx_ring.count * sizeof(struct skge_tx_desc); + skge->mem_size = tx_size + rx_size; + skge->mem = pci_alloc_consistent(hw->pdev, skge->mem_size, &skge->dma); + if (!skge->mem) + return -ENOMEM; + + memset(skge->mem, 0, skge->mem_size); + + if ((err = skge_ring_alloc(&skge->rx_ring, skge->mem, skge->dma))) + goto free_pci_mem; + + if (skge_rx_fill(skge)) + goto free_rx_ring; + + if ((err = skge_ring_alloc(&skge->tx_ring, skge->mem + rx_size, + skge->dma + rx_size))) + goto free_rx_ring; + + skge->tx_avail = skge->tx_ring.count - 1; + + /* Initialze MAC */ + if (hw->chip_id == CHIP_ID_GENESIS) + genesis_mac_init(hw, port); + else + yukon_mac_init(hw, port); + + /* Configure RAMbuffers */ + chunk = hw->ram_size / (isdualport(hw) ? 4 : 2); + ram_addr = hw->ram_offset + 2 * chunk * port; + + skge_ramset(hw, rxqaddr[port], ram_addr, chunk); + skge_qset(skge, rxqaddr[port], skge->rx_ring.to_clean); + + BUG_ON(skge->tx_ring.to_use != skge->tx_ring.to_clean); + skge_ramset(hw, txqaddr[port], ram_addr+chunk, chunk); + skge_qset(skge, txqaddr[port], skge->tx_ring.to_use); + + /* Start receiver BMU */ + wmb(); + skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_START | CSR_IRQ_CL_F); + + pr_debug("skge_up completed\n"); + return 0; + + free_rx_ring: + skge_rx_clean(skge); + kfree(skge->rx_ring.start); + free_pci_mem: + pci_free_consistent(hw->pdev, skge->mem_size, skge->mem, skge->dma); + + return err; +} + +static int skge_down(struct net_device *dev) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + int port = skge->port; + + if (netif_msg_ifdown(skge)) + printk(KERN_INFO PFX "%s: disabling interface\n", dev->name); + + netif_stop_queue(dev); + + del_timer_sync(&skge->led_blink); + del_timer_sync(&skge->link_check); + + /* Stop transmitter */ + skge_write8(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_STOP); + skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), + RB_RST_SET|RB_DIS_OP_MD); + + if (hw->chip_id == CHIP_ID_GENESIS) + genesis_stop(skge); + else + yukon_stop(skge); + + /* Disable Force Sync bit and Enable Alloc bit */ + skge_write8(hw, SKGEMAC_REG(port, TXA_CTRL), + TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC); + + /* Stop Interval Timer and Limit Counter of Tx Arbiter */ + skge_write32(hw, SKGEMAC_REG(port, TXA_ITI_INI), 0L); + skge_write32(hw, SKGEMAC_REG(port, TXA_LIM_INI), 0L); + + /* Reset PCI FIFO */ + skge_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_SET_RESET); + skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET); + + /* Reset the RAM Buffer async Tx queue */ + skge_write8(hw, RB_ADDR(port == 0 ? Q_XA1 : Q_XA2, RB_CTRL), RB_RST_SET); + /* stop receiver */ + skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_STOP); + skge_write32(hw, RB_ADDR(port ? Q_R2 : Q_R1, RB_CTRL), + RB_RST_SET|RB_DIS_OP_MD); + skge_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_SET_RESET); + + if (hw->chip_id == CHIP_ID_GENESIS) { + skge_write8(hw, SKGEMAC_REG(port, TX_MFF_CTRL2), MFF_RST_SET); + skge_write8(hw, SKGEMAC_REG(port, RX_MFF_CTRL2), MFF_RST_SET); + skge_write8(hw, SKGEMAC_REG(port, TX_LED_CTRL), LED_STOP); + skge_write8(hw, SKGEMAC_REG(port, RX_LED_CTRL), LED_STOP); + } else { + skge_write8(hw, SKGEMAC_REG(port, RX_GMF_CTRL_T), GMF_RST_SET); + skge_write8(hw, SKGEMAC_REG(port, TX_GMF_CTRL_T), GMF_RST_SET); + } + + /* turn off led's */ + skge_write16(hw, B0_LED, LED_STAT_OFF); + + skge_tx_clean(skge); + skge_rx_clean(skge); + + kfree(skge->rx_ring.start); + kfree(skge->tx_ring.start); + pci_free_consistent(hw->pdev, skge->mem_size, skge->mem, skge->dma); + return 0; +} + +static int skge_xmit_frame(struct sk_buff *skb, struct net_device *dev) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + struct skge_ring *ring = &skge->tx_ring; + struct skge_element *e; + struct skge_tx_desc *td; + int i; + u32 control, len; + u64 map; + unsigned long flags; + + skb = skb_padto(skb, ETH_ZLEN); + if (!skb) + return NETDEV_TX_OK; + + local_irq_save(flags); + if (!spin_trylock(&skge->tx_lock)) { + /* Collision - tell upper layer to requeue */ + local_irq_restore(flags); + return NETDEV_TX_LOCKED; + } + + if (unlikely(skge->tx_avail < skb_shinfo(skb)->nr_frags +1)) { + netif_stop_queue(dev); + spin_unlock_irqrestore(&skge->tx_lock, flags); + + printk(KERN_WARNING PFX "%s: ring full when queue awake!\n", + dev->name); + return NETDEV_TX_BUSY; + } + + e = ring->to_use; + td = e->desc; + e->skb = skb; + len = skb_headlen(skb); + map = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE); + pci_unmap_addr_set(e, mapaddr, map); + pci_unmap_len_set(e, maplen, len); + + td->dma_lo = map; + td->dma_hi = map >> 32; + + if (skb->ip_summed == CHECKSUM_HW) { + const struct iphdr *ip + = (const struct iphdr *) (skb->data + ETH_HLEN); + int offset = skb->h.raw - skb->data; + + /* This seems backwards, but it is what the sk98lin + * does. Looks like hardware is wrong? + */ + if (ip->protocol == IPPROTO_UDP + && chip_rev(hw) == 0 && hw->chip_id == CHIP_ID_YUKON) + control = BMU_TCP_CHECK; + else + control = BMU_UDP_CHECK; + + td->csum_offs = 0; + td->csum_start = offset; + td->csum_write = offset + skb->csum; + } else + control = BMU_CHECK; + + if (!skb_shinfo(skb)->nr_frags) /* single buffer i.e. no fragments */ + control |= BMU_EOF| BMU_IRQ_EOF; + else { + struct skge_tx_desc *tf = td; + + control |= BMU_STFWD; + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; + + map = pci_map_page(hw->pdev, frag->page, frag->page_offset, + frag->size, PCI_DMA_TODEVICE); + + e = e->next; + e->skb = NULL; + tf = e->desc; + tf->dma_lo = map; + tf->dma_hi = (u64) map >> 32; + pci_unmap_addr_set(e, mapaddr, map); + pci_unmap_len_set(e, maplen, frag->size); + + tf->control = BMU_OWN | BMU_SW | control | frag->size; + } + tf->control |= BMU_EOF | BMU_IRQ_EOF; + } + /* Make sure all the descriptors written */ + wmb(); + td->control = BMU_OWN | BMU_SW | BMU_STF | control | len; + wmb(); + + skge_write8(hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_START); + + if (netif_msg_tx_queued(skge)) + printk(KERN_DEBUG "%s: tx queued, slot %d, len %d\n", + dev->name, e - ring->start, skb->len); + + ring->to_use = e->next; + skge->tx_avail -= skb_shinfo(skb)->nr_frags + 1; + if (skge->tx_avail <= MAX_SKB_FRAGS + 1) { + pr_debug("%s: transmit queue full\n", dev->name); + netif_stop_queue(dev); + } + + dev->trans_start = jiffies; + spin_unlock_irqrestore(&skge->tx_lock, flags); + + return NETDEV_TX_OK; +} + +static inline void skge_tx_free(struct skge_hw *hw, struct skge_element *e) +{ + if (e->skb) { + pci_unmap_single(hw->pdev, + pci_unmap_addr(e, mapaddr), + pci_unmap_len(e, maplen), + PCI_DMA_TODEVICE); + dev_kfree_skb_any(e->skb); + e->skb = NULL; + } else { + pci_unmap_page(hw->pdev, + pci_unmap_addr(e, mapaddr), + pci_unmap_len(e, maplen), + PCI_DMA_TODEVICE); + } +} + +static void skge_tx_clean(struct skge_port *skge) +{ + struct skge_ring *ring = &skge->tx_ring; + struct skge_element *e; + unsigned long flags; + + spin_lock_irqsave(&skge->tx_lock, flags); + for (e = ring->to_clean; e != ring->to_use; e = e->next) { + ++skge->tx_avail; + skge_tx_free(skge->hw, e); + } + ring->to_clean = e; + spin_unlock_irqrestore(&skge->tx_lock, flags); +} + +static void skge_tx_timeout(struct net_device *dev) +{ + struct skge_port *skge = netdev_priv(dev); + + if (netif_msg_timer(skge)) + printk(KERN_DEBUG PFX "%s: tx timeout\n", dev->name); + + skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_STOP); + skge_tx_clean(skge); +} + +static int skge_change_mtu(struct net_device *dev, int new_mtu) +{ + int err = 0; + + if(new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU) + return -EINVAL; + + dev->mtu = new_mtu; + + if (netif_running(dev)) { + skge_down(dev); + skge_up(dev); + } + + return err; +} + +static void genesis_set_multicast(struct net_device *dev) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + int port = skge->port; + int i, count = dev->mc_count; + struct dev_mc_list *list = dev->mc_list; + u32 mode; + u8 filter[8]; + + mode = skge_xm_read32(hw, port, XM_MODE); + mode |= XM_MD_ENA_HASH; + if (dev->flags & IFF_PROMISC) + mode |= XM_MD_ENA_PROM; + else + mode &= ~XM_MD_ENA_PROM; + + if (dev->flags & IFF_ALLMULTI) + memset(filter, 0xff, sizeof(filter)); + else { + memset(filter, 0, sizeof(filter)); + for(i = 0; list && i < count; i++, list = list->next) { + u32 crc = crc32_le(~0, list->dmi_addr, ETH_ALEN); + u8 bit = 63 - (crc & 63); + + filter[bit/8] |= 1 << (bit%8); + } + } + + skge_xm_outhash(hw, port, XM_HSM, filter); + + skge_xm_write32(hw, port, XM_MODE, mode); +} + +static void yukon_set_multicast(struct net_device *dev) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + int port = skge->port; + struct dev_mc_list *list = dev->mc_list; + u16 reg; + u8 filter[8]; + + memset(filter, 0, sizeof(filter)); + + reg = skge_gma_read16(hw, port, GM_RX_CTRL); + reg |= GM_RXCR_UCF_ENA; + + if (dev->flags & IFF_PROMISC) /* promiscious */ + reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA); + else if (dev->flags & IFF_ALLMULTI) /* all multicast */ + memset(filter, 0xff, sizeof(filter)); + else if (dev->mc_count == 0) /* no multicast */ + reg &= ~GM_RXCR_MCF_ENA; + else { + int i; + reg |= GM_RXCR_MCF_ENA; + + for(i = 0; list && i < dev->mc_count; i++, list = list->next) { + u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f; + filter[bit/8] |= 1 << (bit%8); + } + } + + + skge_gma_write16(hw, port, GM_MC_ADDR_H1, + (u16)filter[0] | ((u16)filter[1] << 8)); + skge_gma_write16(hw, port, GM_MC_ADDR_H2, + (u16)filter[2] | ((u16)filter[3] << 8)); + skge_gma_write16(hw, port, GM_MC_ADDR_H3, + (u16)filter[4] | ((u16)filter[5] << 8)); + skge_gma_write16(hw, port, GM_MC_ADDR_H4, + (u16)filter[6] | ((u16)filter[7] << 8)); + + skge_gma_write16(hw, port, GM_RX_CTRL, reg); +} + +static inline int bad_phy_status(const struct skge_hw *hw, u32 status) +{ + if (hw->chip_id == CHIP_ID_GENESIS) + return (status & (XMR_FS_ERR | XMR_FS_2L_VLAN)) != 0; + else + return (status & GMR_FS_ANY_ERR) || + (status & GMR_FS_RX_OK) == 0; +} + +static void skge_rx_error(struct skge_port *skge, int slot, + u32 control, u32 status) +{ + if (netif_msg_rx_err(skge)) + printk(KERN_DEBUG PFX "%s: rx err, slot %d control 0x%x status 0x%x\n", + skge->netdev->name, slot, control, status); + + if ((control & (BMU_EOF|BMU_STF)) != (BMU_STF|BMU_EOF) + || (control & BMU_BBC) > skge->netdev->mtu + VLAN_ETH_HLEN) + skge->net_stats.rx_length_errors++; + else { + if (skge->hw->chip_id == CHIP_ID_GENESIS) { + if (status & (XMR_FS_RUNT|XMR_FS_LNG_ERR)) + skge->net_stats.rx_length_errors++; + if (status & XMR_FS_FRA_ERR) + skge->net_stats.rx_frame_errors++; + if (status & XMR_FS_FCS_ERR) + skge->net_stats.rx_crc_errors++; + } else { + if (status & (GMR_FS_LONG_ERR|GMR_FS_UN_SIZE)) + skge->net_stats.rx_length_errors++; + if (status & GMR_FS_FRAGMENT) + skge->net_stats.rx_frame_errors++; + if (status & GMR_FS_CRC_ERR) + skge->net_stats.rx_crc_errors++; + } + } +} + +static int skge_poll(struct net_device *dev, int *budget) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + struct skge_ring *ring = &skge->rx_ring; + struct skge_element *e; + unsigned int to_do = min(dev->quota, *budget); + unsigned int work_done = 0; + int done; + static const u32 irqmask[] = { IS_PORT_1, IS_PORT_2 }; + + for (e = ring->to_clean; e != ring->to_use && work_done < to_do; + e = e->next) { + struct skge_rx_desc *rd = e->desc; + struct sk_buff *skb = e->skb; + u32 control, len, status; + + rmb(); + control = rd->control; + if (control & BMU_OWN) + break; + + len = control & BMU_BBC; + e->skb = NULL; + + pci_unmap_single(hw->pdev, + pci_unmap_addr(e, mapaddr), + pci_unmap_len(e, maplen), + PCI_DMA_FROMDEVICE); + + status = rd->status; + if ((control & (BMU_EOF|BMU_STF)) != (BMU_STF|BMU_EOF) + || len > dev->mtu + VLAN_ETH_HLEN + || bad_phy_status(hw, status)) { + skge_rx_error(skge, e - ring->start, control, status); + dev_kfree_skb(skb); + continue; + } + + if (netif_msg_rx_status(skge)) + printk(KERN_DEBUG PFX "%s: rx slot %d status 0x%x len %d\n", + dev->name, e - ring->start, rd->status, len); + + skb_put(skb, len); + skb->protocol = eth_type_trans(skb, dev); + + if (skge->rx_csum) { + skb->csum = le16_to_cpu(rd->csum2); + skb->ip_summed = CHECKSUM_HW; + } + + dev->last_rx = jiffies; + netif_receive_skb(skb); + + ++work_done; + } + ring->to_clean = e; + + *budget -= work_done; + dev->quota -= work_done; + done = work_done < to_do; + + if (skge_rx_fill(skge)) + done = 0; + + /* restart receiver */ + wmb(); + skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), + CSR_START | CSR_IRQ_CL_F); + + if (done) { + local_irq_disable(); + hw->intr_mask |= irqmask[skge->port]; + /* Order is important since data can get interrupted */ + skge_write32(hw, B0_IMSK, hw->intr_mask); + __netif_rx_complete(dev); + local_irq_enable(); + } + + return !done; +} + +static inline void skge_tx_intr(struct net_device *dev) +{ + struct skge_port *skge = netdev_priv(dev); + struct skge_hw *hw = skge->hw; + struct skge_ring *ring = &skge->tx_ring; + struct skge_element *e; + + spin_lock(&skge->tx_lock); + for(e = ring->to_clean; e != ring->to_use; e = e->next) { + struct skge_tx_desc *td = e->desc; + u32 control; + + rmb(); + control = td->control; + if (control & BMU_OWN) + break; + + if (unlikely(netif_msg_tx_done(skge))) + printk(KERN_DEBUG PFX "%s: tx done slot %d status 0x%x\n", + dev->name, e - ring->start, td->status); + + skge_tx_free(hw, e); + e->skb = NULL; + ++skge->tx_avail; + } + ring->to_clean = e; + skge_write8(hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F); + + if (skge->tx_avail > MAX_SKB_FRAGS + 1) + netif_wake_queue(dev); + + spin_unlock(&skge->tx_lock); +} + +static void skge_mac_parity(struct skge_hw *hw, int port) +{ + printk(KERN_ERR PFX "%s: mac data parity error\n", + hw->dev[port] ? hw->dev[port]->name + : (port == 0 ? "(port A)": "(port B")); + + if (hw->chip_id == CHIP_ID_GENESIS) + skge_write16(hw, SKGEMAC_REG(port, TX_MFF_CTRL1), + MFF_CLR_PERR); + else + /* HW-Bug #8: cleared by GMF_CLI_TX_FC instead of GMF_CLI_TX_PE */ + skge_write8(hw, SKGEMAC_REG(port, TX_GMF_CTRL_T), + (hw->chip_id == CHIP_ID_YUKON && chip_rev(hw) == 0) + ? GMF_CLI_TX_FC : GMF_CLI_TX_PE); +} + +static void skge_pci_clear(struct skge_hw *hw) +{ + u16 status; + + status = skge_read16(hw, SKGEPCI_REG(PCI_STATUS)); + skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON); + skge_write16(hw, SKGEPCI_REG(PCI_STATUS), + status | PCI_STATUS_ERROR_BITS); + skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF); +} + +static void skge_mac_intr(struct skge_hw *hw, int port) +{ + if (hw->chip_id == CHIP_ID_GENESIS) + genesis_mac_intr(hw, port); + else + yukon_mac_intr(hw, port); +} + +/* Handle device specific framing and timeout interrupts */ +static void skge_error_irq(struct skge_hw *hw) +{ + u32 hwstatus = skge_read32(hw, B0_HWE_ISRC); + + if (hw->chip_id == CHIP_ID_GENESIS) { + /* clear xmac errors */ + if (hwstatus & (IS_NO_STAT_M1|IS_NO_TIST_M1)) + skge_write16(hw, SKGEMAC_REG(0, RX_MFF_CTRL1), MFF_CLR_INSTAT); + if (hwstatus & (IS_NO_STAT_M2|IS_NO_TIST_M2)) + skge_write16(hw, SKGEMAC_REG(0, RX_MFF_CTRL2), MFF_CLR_INSTAT); + } else { + /* Timestamp (unused) overflow */ + if (hwstatus & IS_IRQ_TIST_OV) + skge_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ); + + if (hwstatus & IS_IRQ_SENSOR) { + /* no sensors on 32-bit Yukon */ + if (!(skge_read16(hw, B0_CTST) & CS_BUS_SLOT_SZ)) { + printk(KERN_ERR PFX "ignoring bogus sensor interrups\n"); + skge_write32(hw, B0_HWE_IMSK, + IS_ERR_MSK & ~IS_IRQ_SENSOR); + } else + printk(KERN_WARNING PFX "sensor interrupt\n"); + } + + + } + + if (hwstatus & IS_RAM_RD_PAR) { + printk(KERN_ERR PFX "Ram read data parity error\n"); + skge_write16(hw, B3_RI_CTRL, RI_CLR_RD_PERR); + } + + if (hwstatus & IS_RAM_WR_PAR) { + printk(KERN_ERR PFX "Ram write data parity error\n"); + skge_write16(hw, B3_RI_CTRL, RI_CLR_WR_PERR); + } + + if (hwstatus & IS_M1_PAR_ERR) + skge_mac_parity(hw, 0); + + if (hwstatus & IS_M2_PAR_ERR) + skge_mac_parity(hw, 1); + + if (hwstatus & IS_R1_PAR_ERR) + skge_write32(hw, B0_R1_CSR, CSR_IRQ_CL_P); + + if (hwstatus & IS_R2_PAR_ERR) + skge_write32(hw, B0_R2_CSR, CSR_IRQ_CL_P); + + if (hwstatus & (IS_IRQ_MST_ERR|IS_IRQ_STAT)) { + printk(KERN_ERR PFX "hardware error detected (status 0x%x)\n", + hwstatus); + + skge_pci_clear(hw); + + hwstatus = skge_read32(hw, B0_HWE_ISRC); + if (hwstatus & IS_IRQ_STAT) { + printk(KERN_WARNING PFX "IRQ status %x: still set ignoring hardware errors\n", + hwstatus); + hw->intr_mask &= ~IS_HW_ERR; + } + } +} + +/* + * Interrrupt from PHY are handled in tasklet (soft irq) + * because accessing phy registers requires spin wait which might + * cause excess interrupt latency. + */ +static void skge_extirq(unsigned long data) +{ + struct skge_hw *hw = (struct skge_hw *) data; + int port; + + spin_lock(&hw->phy_lock); + for (port = 0; port < 2; port++) { + struct net_device *dev = hw->dev[port]; + + if (dev && netif_running(dev)) { + struct skge_port *skge = netdev_priv(dev); + + if (hw->chip_id != CHIP_ID_GENESIS) + yukon_phy_intr(skge); + else if (hw->phy_type == SK_PHY_BCOM) + genesis_bcom_intr(skge); + } + } + spin_unlock(&hw->phy_lock); + + local_irq_disable(); + hw->intr_mask |= IS_EXT_REG; + skge_write32(hw, B0_IMSK, hw->intr_mask); + local_irq_enable(); +} + +static irqreturn_t skge_intr(int irq, void *dev_id, struct pt_regs *regs) +{ + struct skge_hw *hw = dev_id; + u32 status = skge_read32(hw, B0_SP_ISRC); + + if (status == 0 || status == ~0) /* hotplug or shared irq */ + return IRQ_NONE; + + status &= hw->intr_mask; + + if ((status & IS_R1_F) && netif_rx_schedule_prep(hw->dev[0])) { + status &= ~IS_R1_F; + hw->intr_mask &= ~IS_R1_F; + skge_write32(hw, B0_IMSK, hw->intr_mask); + __netif_rx_schedule(hw->dev[0]); + } + + if ((status & IS_R2_F) && netif_rx_schedule_prep(hw->dev[1])) { + status &= ~IS_R2_F; + hw->intr_mask &= ~IS_R2_F; + skge_write32(hw, B0_IMSK, hw->intr_mask); + __netif_rx_schedule(hw->dev[1]); + } + + if (status & IS_XA1_F) + skge_tx_intr(hw->dev[0]); + + if (status & IS_XA2_F) + skge_tx_intr(hw->dev[1]); + + if (status & IS_MAC1) + skge_mac_intr(hw, 0); + + if (status & IS_MAC2) + skge_mac_intr(hw, 1); + + if (status & IS_HW_ERR) + skge_error_irq(hw); + + if (status & IS_EXT_REG) { + hw->intr_mask &= ~IS_EXT_REG; + tasklet_schedule(&hw->ext_tasklet); + } + + if (status) + skge_write32(hw, B0_IMSK, hw->intr_mask); + + return IRQ_HANDLED; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void skge_netpoll(struct net_device *dev) +{ + struct skge_port *skge = netdev_priv(dev); + + disable_irq(dev->irq); + skge_intr(dev->irq, skge->hw, NULL); + enable_irq(dev->irq); +} +#endif + +static int skge_set_mac_address(struct net_device *dev, void *p) +{ + struct skge_port *skge = netdev_priv(dev); + struct sockaddr *addr = p; + int err = 0; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + skge_down(dev); + memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); + memcpy_toio(skge->hw->regs + B2_MAC_1 + skge->port*8, + dev->dev_addr, ETH_ALEN); + memcpy_toio(skge->hw->regs + B2_MAC_2 + skge->port*8, + dev->dev_addr, ETH_ALEN); + if (dev->flags & IFF_UP) + err = skge_up(dev); + return err; +} + +static const struct { + u8 id; + const char *name; +} skge_chips[] = { + { CHIP_ID_GENESIS, "Genesis" }, + { CHIP_ID_YUKON, "Yukon" }, + { CHIP_ID_YUKON_LITE, "Yukon-Lite"}, + { CHIP_ID_YUKON_LP, "Yukon-LP"}, + { CHIP_ID_YUKON_XL, "Yukon-2 XL"}, + { CHIP_ID_YUKON_EC, "YUKON-2 EC"}, + { CHIP_ID_YUKON_FE, "YUKON-2 FE"}, +}; + +static const char *skge_board_name(const struct skge_hw *hw) +{ + int i; + static char buf[16]; + + for (i = 0; i < ARRAY_SIZE(skge_chips); i++) + if (skge_chips[i].id == hw->chip_id) + return skge_chips[i].name; + + snprintf(buf, sizeof buf, "chipid 0x%x", hw->chip_id); + return buf; +} + + +/* + * Setup the board data structure, but don't bring up + * the port(s) + */ +static int skge_reset(struct skge_hw *hw) +{ + u16 ctst; + u8 t8; + int i, ports; + + ctst = skge_read16(hw, B0_CTST); + + /* do a SW reset */ + skge_write8(hw, B0_CTST, CS_RST_SET); + skge_write8(hw, B0_CTST, CS_RST_CLR); + + /* clear PCI errors, if any */ + skge_pci_clear(hw); + + skge_write8(hw, B0_CTST, CS_MRST_CLR); + + /* restore CLK_RUN bits (for Yukon-Lite) */ + skge_write16(hw, B0_CTST, + ctst & (CS_CLK_RUN_HOT|CS_CLK_RUN_RST|CS_CLK_RUN_ENA)); + + hw->chip_id = skge_read8(hw, B2_CHIP_ID); + hw->phy_type = skge_read8(hw, B2_E_1) & 0xf; + hw->pmd_type = skge_read8(hw, B2_PMD_TYP); + + switch(hw->chip_id) { + case CHIP_ID_GENESIS: + switch (hw->phy_type) { + case SK_PHY_XMAC: + hw->phy_addr = PHY_ADDR_XMAC; + break; + case SK_PHY_BCOM: + hw->phy_addr = PHY_ADDR_BCOM; + break; + default: + printk(KERN_ERR PFX "%s: unsupported phy type 0x%x\n", + pci_name(hw->pdev), hw->phy_type); + return -EOPNOTSUPP; + } + break; + + case CHIP_ID_YUKON: + case CHIP_ID_YUKON_LITE: + case CHIP_ID_YUKON_LP: + if (hw->phy_type < SK_PHY_MARV_COPPER && hw->pmd_type != 'S') + hw->phy_type = SK_PHY_MARV_COPPER; + + hw->phy_addr = PHY_ADDR_MARV; + if (!iscopper(hw)) + hw->phy_type = SK_PHY_MARV_FIBER; + + break; + + default: + printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n", + pci_name(hw->pdev), hw->chip_id); + return -EOPNOTSUPP; + } + + hw->mac_cfg = skge_read8(hw, B2_MAC_CFG); + ports = isdualport(hw) ? 2 : 1; + + /* read the adapters RAM size */ + t8 = skge_read8(hw, B2_E_0); + if (hw->chip_id == CHIP_ID_GENESIS) { + if (t8 == 3) { + /* special case: 4 x 64k x 36, offset = 0x80000 */ + hw->ram_size = 0x100000; + hw->ram_offset = 0x80000; + } else + hw->ram_size = t8 * 512; + } + else if (t8 == 0) + hw->ram_size = 0x20000; + else + hw->ram_size = t8 * 4096; + + if (hw->chip_id == CHIP_ID_GENESIS) + genesis_init(hw); + else { + /* switch power to VCC (WA for VAUX problem) */ + skge_write8(hw, B0_POWER_CTRL, + PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON); + for (i = 0; i < ports; i++) { + skge_write16(hw, SKGEMAC_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET); + skge_write16(hw, SKGEMAC_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR); + } + } + + /* turn off hardware timer (unused) */ + skge_write8(hw, B2_TI_CTRL, TIM_STOP); + skge_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ); + skge_write8(hw, B0_LED, LED_STAT_ON); + + /* enable the Tx Arbiters */ + for (i = 0; i < ports; i++) + skge_write8(hw, SKGEMAC_REG(i, TXA_CTRL), TXA_ENA_ARB); + + /* Initialize ram interface */ + skge_write16(hw, B3_RI_CTRL, RI_RST_CLR); + + skge_write8(hw, B3_RI_WTO_R1, SK_RI_TO_53); + skge_write8(hw, B3_RI_WTO_XA1, SK_RI_TO_53); + skge_write8(hw, B3_RI_WTO_XS1, SK_RI_TO_53); + skge_write8(hw, B3_RI_RTO_R1, SK_RI_TO_53); + skge_write8(hw, B3_RI_RTO_XA1, SK_RI_TO_53); + skge_write8(hw, B3_RI_RTO_XS1, SK_RI_TO_53); + skge_write8(hw, B3_RI_WTO_R2, SK_RI_TO_53); + skge_write8(hw, B3_RI_WTO_XA2, SK_RI_TO_53); + skge_write8(hw, B3_RI_WTO_XS2, SK_RI_TO_53); + skge_write8(hw, B3_RI_RTO_R2, SK_RI_TO_53); + skge_write8(hw, B3_RI_RTO_XA2, SK_RI_TO_53); + skge_write8(hw, B3_RI_RTO_XS2, SK_RI_TO_53); + + skge_write32(hw, B0_HWE_IMSK, IS_ERR_MSK); + + /* Set interrupt moderation for Transmit only + * Receive interrupts avoided by NAPI + */ + skge_write32(hw, B2_IRQM_MSK, IS_XA1_F|IS_XA2_F); + skge_write32(hw, B2_IRQM_INI, skge_usecs2clk(hw, 100)); + skge_write32(hw, B2_IRQM_CTRL, TIM_START); + + hw->intr_mask = IS_HW_ERR | IS_EXT_REG | IS_PORT_1; + if (isdualport(hw)) + hw->intr_mask |= IS_PORT_2; + skge_write32(hw, B0_IMSK, hw->intr_mask); + + if (hw->chip_id != CHIP_ID_GENESIS) + skge_write8(hw, GMAC_IRQ_MSK, 0); + + spin_lock_bh(&hw->phy_lock); + for (i = 0; i < ports; i++) { + if (hw->chip_id == CHIP_ID_GENESIS) + genesis_reset(hw, i); + else + yukon_reset(hw, i); + } + spin_unlock_bh(&hw->phy_lock); + + return 0; +} + +/* Initialize network device */ +static struct net_device *skge_devinit(struct skge_hw *hw, int port) +{ + struct skge_port *skge; + struct net_device *dev = alloc_etherdev(sizeof(*skge)); + + if (!dev) { + printk(KERN_ERR "skge etherdev alloc failed"); + return NULL; + } + + SET_MODULE_OWNER(dev); + SET_NETDEV_DEV(dev, &hw->pdev->dev); + dev->open = skge_up; + dev->stop = skge_down; + dev->hard_start_xmit = skge_xmit_frame; + dev->get_stats = skge_get_stats; + if (hw->chip_id == CHIP_ID_GENESIS) + dev->set_multicast_list = genesis_set_multicast; + else + dev->set_multicast_list = yukon_set_multicast; + + dev->set_mac_address = skge_set_mac_address; + dev->change_mtu = skge_change_mtu; + SET_ETHTOOL_OPS(dev, &skge_ethtool_ops); + dev->tx_timeout = skge_tx_timeout; + dev->watchdog_timeo = TX_WATCHDOG; + dev->poll = skge_poll; + dev->weight = NAPI_WEIGHT; +#ifdef CONFIG_NET_POLL_CONTROLLER + dev->poll_controller = skge_netpoll; +#endif + dev->irq = hw->pdev->irq; + dev->features = NETIF_F_LLTX; + + skge = netdev_priv(dev); + skge->netdev = dev; + skge->hw = hw; + skge->msg_enable = netif_msg_init(debug, default_msg); + skge->tx_ring.count = DEFAULT_TX_RING_SIZE; + skge->rx_ring.count = DEFAULT_RX_RING_SIZE; + + /* Auto speed and flow control */ + skge->autoneg = AUTONEG_ENABLE; + skge->flow_control = FLOW_MODE_SYMMETRIC; + skge->duplex = -1; + skge->speed = -1; + skge->advertising = skge_modes(hw); + + hw->dev[port] = dev; + + skge->port = port; + + spin_lock_init(&skge->tx_lock); + + init_timer(&skge->link_check); + skge->link_check.function = skge_link_timer; + skge->link_check.data = (unsigned long) skge; + + init_timer(&skge->led_blink); + skge->led_blink.function = skge_blink_timer; + skge->led_blink.data = (unsigned long) skge; + + if (hw->chip_id != CHIP_ID_GENESIS) { + dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG; + skge->rx_csum = 1; + } + + /* read the mac address */ + memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port*8, ETH_ALEN); + + /* device is off until link detection */ + netif_carrier_off(dev); + netif_stop_queue(dev); + + return dev; +} + +static void __devinit skge_show_addr(struct net_device *dev) +{ + const struct skge_port *skge = netdev_priv(dev); + + if (netif_msg_probe(skge)) + printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n", + dev->name, + dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2], + dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]); +} + +static int __devinit skge_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct net_device *dev, *dev1; + struct skge_hw *hw; + int err, using_dac = 0; + + if ((err = pci_enable_device(pdev))) { + printk(KERN_ERR PFX "%s cannot enable PCI device\n", + pci_name(pdev)); + goto err_out; + } + + if ((err = pci_request_regions(pdev, DRV_NAME))) { + printk(KERN_ERR PFX "%s cannot obtain PCI resources\n", + pci_name(pdev)); + goto err_out_disable_pdev; + } + + pci_set_master(pdev); + + if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) + using_dac = 1; + else if (!(err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) { + printk(KERN_ERR PFX "%s no usable DMA configuration\n", + pci_name(pdev)); + goto err_out_free_regions; + } + +#ifdef __BIG_ENDIAN + /* byte swap decriptors in hardware */ + { + u32 reg; + + pci_read_config_dword(pdev, PCI_DEV_REG2, ®); + reg |= PCI_REV_DESC; + pci_write_config_dword(pdev, PCI_DEV_REG2, reg); + } +#endif + + err = -ENOMEM; + hw = kmalloc(sizeof(*hw), GFP_KERNEL); + if (!hw) { + printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n", + pci_name(pdev)); + goto err_out_free_regions; + } + + memset(hw, 0, sizeof(*hw)); + hw->pdev = pdev; + spin_lock_init(&hw->phy_lock); + tasklet_init(&hw->ext_tasklet, skge_extirq, (unsigned long) hw); + + hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000); + if (!hw->regs) { + printk(KERN_ERR PFX "%s: cannot map device registers\n", + pci_name(pdev)); + goto err_out_free_hw; + } + + if ((err = request_irq(pdev->irq, skge_intr, SA_SHIRQ, DRV_NAME, hw))) { + printk(KERN_ERR PFX "%s: cannot assign irq %d\n", + pci_name(pdev), pdev->irq); + goto err_out_iounmap; + } + pci_set_drvdata(pdev, hw); + + err = skge_reset(hw); + if (err) + goto err_out_free_irq; + + printk(KERN_INFO PFX "addr 0x%lx irq %d chip %s rev %d\n", + pci_resource_start(pdev, 0), pdev->irq, + skge_board_name(hw), chip_rev(hw)); + + if ((dev = skge_devinit(hw, 0)) == NULL) + goto err_out_led_off; + + if (using_dac) + dev->features |= NETIF_F_HIGHDMA; + + if ((err = register_netdev(dev))) { + printk(KERN_ERR PFX "%s: cannot register net device\n", + pci_name(pdev)); + goto err_out_free_netdev; + } + + skge_show_addr(dev); + + if (isdualport(hw) && (dev1 = skge_devinit(hw, 1))) { + if (using_dac) + dev1->features |= NETIF_F_HIGHDMA; + + if (register_netdev(dev1) == 0) + skge_show_addr(dev1); + else { + /* Failure to register second port need not be fatal */ + printk(KERN_WARNING PFX "register of second port failed\n"); + hw->dev[1] = NULL; + free_netdev(dev1); + } + } + + return 0; + +err_out_free_netdev: + free_netdev(dev); +err_out_led_off: + skge_write16(hw, B0_LED, LED_STAT_OFF); +err_out_free_irq: + free_irq(pdev->irq, hw); +err_out_iounmap: + iounmap(hw->regs); +err_out_free_hw: + kfree(hw); +err_out_free_regions: + pci_release_regions(pdev); +err_out_disable_pdev: + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); +err_out: + return err; +} + +static void __devexit skge_remove(struct pci_dev *pdev) +{ + struct skge_hw *hw = pci_get_drvdata(pdev); + struct net_device *dev0, *dev1; + + if(!hw) + return; + + if ((dev1 = hw->dev[1])) + unregister_netdev(dev1); + dev0 = hw->dev[0]; + unregister_netdev(dev0); + + tasklet_kill(&hw->ext_tasklet); + + free_irq(pdev->irq, hw); + pci_release_regions(pdev); + pci_disable_device(pdev); + if (dev1) + free_netdev(dev1); + free_netdev(dev0); + skge_write16(hw, B0_LED, LED_STAT_OFF); + iounmap(hw->regs); + kfree(hw); + pci_set_drvdata(pdev, NULL); +} + +#ifdef CONFIG_PM +static int skge_suspend(struct pci_dev *pdev, u32 state) +{ + struct skge_hw *hw = pci_get_drvdata(pdev); + int i, wol = 0; + + for(i = 0; i < 2; i++) { + struct net_device *dev = hw->dev[i]; + + if (dev) { + struct skge_port *skge = netdev_priv(dev); + if (netif_running(dev)) { + netif_carrier_off(dev); + skge_down(dev); + } + netif_device_detach(dev); + wol |= skge->wol; + } + } + + pci_save_state(pdev); + pci_enable_wake(pdev, state, wol); + pci_disable_device(pdev); + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + + return 0; +} + +static int skge_resume(struct pci_dev *pdev) +{ + struct skge_hw *hw = pci_get_drvdata(pdev); + int i; + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + pci_enable_wake(pdev, PCI_D0, 0); + + skge_reset(hw); + + for(i = 0; i < 2; i++) { + struct net_device *dev = hw->dev[i]; + if (dev) { + netif_device_attach(dev); + if(netif_running(dev)) + skge_up(dev); + } + } + return 0; +} +#endif + +static struct pci_driver skge_driver = { + .name = DRV_NAME, + .id_table = skge_id_table, + .probe = skge_probe, + .remove = __devexit_p(skge_remove), +#ifdef CONFIG_PM + .suspend = skge_suspend, + .resume = skge_resume, +#endif +}; + +static int __init skge_init_module(void) +{ + return pci_module_init(&skge_driver); +} + +static void __exit skge_cleanup_module(void) +{ + pci_unregister_driver(&skge_driver); +} + +module_init(skge_init_module); +module_exit(skge_cleanup_module); |