From: Cesar Eduardo Barros Date: Tue, 25 Oct 2011 12:32:24 +0000 (+0000) Subject: net/ethernet: sc92031 is not Realtek X-Git-Tag: MMI-PSA29.97-13-9~18133^2~14 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1b6b7172d0ee37528762bddb83acb56cb38ffac2;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git net/ethernet: sc92031 is not Realtek While the SC92031 could be found on fake "Realtek" NICs, it has no relationship to Realtek, and is actually from Silan. Create a new subdirectory for silan and move sc92031 there. Signed-off-by: Cesar Eduardo Barros Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig index 6dff5a0e733f..597f4d45c632 100644 --- a/drivers/net/ethernet/Kconfig +++ b/drivers/net/ethernet/Kconfig @@ -159,6 +159,7 @@ config S6GMAC will be called s6gmac. source "drivers/net/ethernet/seeq/Kconfig" +source "drivers/net/ethernet/silan/Kconfig" source "drivers/net/ethernet/sis/Kconfig" source "drivers/net/ethernet/sfc/Kconfig" source "drivers/net/ethernet/sgi/Kconfig" diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile index c53ad3afc991..be5dde040261 100644 --- a/drivers/net/ethernet/Makefile +++ b/drivers/net/ethernet/Makefile @@ -58,6 +58,7 @@ obj-$(CONFIG_SH_ETH) += renesas/ obj-$(CONFIG_NET_VENDOR_RDC) += rdc/ obj-$(CONFIG_S6GMAC) += s6gmac.o obj-$(CONFIG_NET_VENDOR_SEEQ) += seeq/ +obj-$(CONFIG_NET_VENDOR_SILAN) += silan/ obj-$(CONFIG_NET_VENDOR_SIS) += sis/ obj-$(CONFIG_SFC) += sfc/ obj-$(CONFIG_NET_VENDOR_SGI) += sgi/ diff --git a/drivers/net/ethernet/realtek/Kconfig b/drivers/net/ethernet/realtek/Kconfig index 84083ec6e612..0578859a3c73 100644 --- a/drivers/net/ethernet/realtek/Kconfig +++ b/drivers/net/ethernet/realtek/Kconfig @@ -115,16 +115,4 @@ config R8169 To compile this driver as a module, choose M here: the module will be called r8169. This is recommended. -config SC92031 - tristate "Silan SC92031 PCI Fast Ethernet Adapter driver (EXPERIMENTAL)" - depends on PCI && EXPERIMENTAL - select CRC32 - ---help--- - This is a driver for the Fast Ethernet PCI network cards based on - the Silan SC92031 chip (sometimes also called Rsltek 8139D). If you - have one of these, say Y here. - - To compile this driver as a module, choose M here: the module - will be called sc92031. This is recommended. - endif # NET_VENDOR_REALTEK diff --git a/drivers/net/ethernet/realtek/Makefile b/drivers/net/ethernet/realtek/Makefile index e48cfb6ac42d..71b1da30ecb5 100644 --- a/drivers/net/ethernet/realtek/Makefile +++ b/drivers/net/ethernet/realtek/Makefile @@ -6,4 +6,3 @@ obj-$(CONFIG_8139CP) += 8139cp.o obj-$(CONFIG_8139TOO) += 8139too.o obj-$(CONFIG_ATP) += atp.o obj-$(CONFIG_R8169) += r8169.o -obj-$(CONFIG_SC92031) += sc92031.o diff --git a/drivers/net/ethernet/realtek/sc92031.c b/drivers/net/ethernet/realtek/sc92031.c deleted file mode 100644 index a284d6440538..000000000000 --- a/drivers/net/ethernet/realtek/sc92031.c +++ /dev/null @@ -1,1609 +0,0 @@ -/* Silan SC92031 PCI Fast Ethernet Adapter driver - * - * Based on vendor drivers: - * Silan Fast Ethernet Netcard Driver: - * MODULE_AUTHOR ("gaoyonghong"); - * MODULE_DESCRIPTION ("SILAN Fast Ethernet driver"); - * MODULE_LICENSE("GPL"); - * 8139D Fast Ethernet driver: - * (C) 2002 by gaoyonghong - * MODULE_AUTHOR ("gaoyonghong"); - * MODULE_DESCRIPTION ("Rsltek 8139D PCI Fast Ethernet Adapter driver"); - * MODULE_LICENSE("GPL"); - * Both are almost identical and seem to be based on pci-skeleton.c - * - * Rewritten for 2.6 by Cesar Eduardo Barros - * - * A datasheet for this chip can be found at - * http://www.silan.com.cn/english/product/pdf/SC92031AY.pdf - */ - -/* Note about set_mac_address: I don't know how to change the hardware - * matching, so you need to enable IFF_PROMISC when using it. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#define SC92031_NAME "sc92031" - -/* BAR 0 is MMIO, BAR 1 is PIO */ -#ifndef SC92031_USE_BAR -#define SC92031_USE_BAR 0 -#endif - -/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */ -static int multicast_filter_limit = 64; -module_param(multicast_filter_limit, int, 0); -MODULE_PARM_DESC(multicast_filter_limit, - "Maximum number of filtered multicast addresses"); - -static int media; -module_param(media, int, 0); -MODULE_PARM_DESC(media, "Media type (0x00 = autodetect," - " 0x01 = 10M half, 0x02 = 10M full," - " 0x04 = 100M half, 0x08 = 100M full)"); - -/* Size of the in-memory receive ring. */ -#define RX_BUF_LEN_IDX 3 /* 0==8K, 1==16K, 2==32K, 3==64K ,4==128K*/ -#define RX_BUF_LEN (8192 << RX_BUF_LEN_IDX) - -/* Number of Tx descriptor registers. */ -#define NUM_TX_DESC 4 - -/* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/ -#define MAX_ETH_FRAME_SIZE 1536 - -/* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */ -#define TX_BUF_SIZE MAX_ETH_FRAME_SIZE -#define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC) - -/* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */ -#define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */ - -/* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (4*HZ) - -#define SILAN_STATS_NUM 2 /* number of ETHTOOL_GSTATS */ - -/* media options */ -#define AUTOSELECT 0x00 -#define M10_HALF 0x01 -#define M10_FULL 0x02 -#define M100_HALF 0x04 -#define M100_FULL 0x08 - - /* Symbolic offsets to registers. */ -enum silan_registers { - Config0 = 0x00, // Config0 - Config1 = 0x04, // Config1 - RxBufWPtr = 0x08, // Rx buffer writer poiter - IntrStatus = 0x0C, // Interrupt status - IntrMask = 0x10, // Interrupt mask - RxbufAddr = 0x14, // Rx buffer start address - RxBufRPtr = 0x18, // Rx buffer read pointer - Txstatusall = 0x1C, // Transmit status of all descriptors - TxStatus0 = 0x20, // Transmit status (Four 32bit registers). - TxAddr0 = 0x30, // Tx descriptors (also four 32bit). - RxConfig = 0x40, // Rx configuration - MAC0 = 0x44, // Ethernet hardware address. - MAR0 = 0x4C, // Multicast filter. - RxStatus0 = 0x54, // Rx status - TxConfig = 0x5C, // Tx configuration - PhyCtrl = 0x60, // physical control - FlowCtrlConfig = 0x64, // flow control - Miicmd0 = 0x68, // Mii command0 register - Miicmd1 = 0x6C, // Mii command1 register - Miistatus = 0x70, // Mii status register - Timercnt = 0x74, // Timer counter register - TimerIntr = 0x78, // Timer interrupt register - PMConfig = 0x7C, // Power Manager configuration - CRC0 = 0x80, // Power Manager CRC ( Two 32bit regisers) - Wakeup0 = 0x88, // power Manager wakeup( Eight 64bit regiser) - LSBCRC0 = 0xC8, // power Manager LSBCRC(Two 32bit regiser) - TestD0 = 0xD0, - TestD4 = 0xD4, - TestD8 = 0xD8, -}; - -#define MII_JAB 16 -#define MII_OutputStatus 24 - -#define PHY_16_JAB_ENB 0x1000 -#define PHY_16_PORT_ENB 0x1 - -enum IntrStatusBits { - LinkFail = 0x80000000, - LinkOK = 0x40000000, - TimeOut = 0x20000000, - RxOverflow = 0x0040, - RxOK = 0x0020, - TxOK = 0x0001, - IntrBits = LinkFail|LinkOK|TimeOut|RxOverflow|RxOK|TxOK, -}; - -enum TxStatusBits { - TxCarrierLost = 0x20000000, - TxAborted = 0x10000000, - TxOutOfWindow = 0x08000000, - TxNccShift = 22, - EarlyTxThresShift = 16, - TxStatOK = 0x8000, - TxUnderrun = 0x4000, - TxOwn = 0x2000, -}; - -enum RxStatusBits { - RxStatesOK = 0x80000, - RxBadAlign = 0x40000, - RxHugeFrame = 0x20000, - RxSmallFrame = 0x10000, - RxCRCOK = 0x8000, - RxCrlFrame = 0x4000, - Rx_Broadcast = 0x2000, - Rx_Multicast = 0x1000, - RxAddrMatch = 0x0800, - MiiErr = 0x0400, -}; - -enum RxConfigBits { - RxFullDx = 0x80000000, - RxEnb = 0x40000000, - RxSmall = 0x20000000, - RxHuge = 0x10000000, - RxErr = 0x08000000, - RxAllphys = 0x04000000, - RxMulticast = 0x02000000, - RxBroadcast = 0x01000000, - RxLoopBack = (1 << 23) | (1 << 22), - LowThresholdShift = 12, - HighThresholdShift = 2, -}; - -enum TxConfigBits { - TxFullDx = 0x80000000, - TxEnb = 0x40000000, - TxEnbPad = 0x20000000, - TxEnbHuge = 0x10000000, - TxEnbFCS = 0x08000000, - TxNoBackOff = 0x04000000, - TxEnbPrem = 0x02000000, - TxCareLostCrs = 0x1000000, - TxExdCollNum = 0xf00000, - TxDataRate = 0x80000, -}; - -enum PhyCtrlconfigbits { - PhyCtrlAne = 0x80000000, - PhyCtrlSpd100 = 0x40000000, - PhyCtrlSpd10 = 0x20000000, - PhyCtrlPhyBaseAddr = 0x1f000000, - PhyCtrlDux = 0x800000, - PhyCtrlReset = 0x400000, -}; - -enum FlowCtrlConfigBits { - FlowCtrlFullDX = 0x80000000, - FlowCtrlEnb = 0x40000000, -}; - -enum Config0Bits { - Cfg0_Reset = 0x80000000, - Cfg0_Anaoff = 0x40000000, - Cfg0_LDPS = 0x20000000, -}; - -enum Config1Bits { - Cfg1_EarlyRx = 1 << 31, - Cfg1_EarlyTx = 1 << 30, - - //rx buffer size - Cfg1_Rcv8K = 0x0, - Cfg1_Rcv16K = 0x1, - Cfg1_Rcv32K = 0x3, - Cfg1_Rcv64K = 0x7, - Cfg1_Rcv128K = 0xf, -}; - -enum MiiCmd0Bits { - Mii_Divider = 0x20000000, - Mii_WRITE = 0x400000, - Mii_READ = 0x200000, - Mii_SCAN = 0x100000, - Mii_Tamod = 0x80000, - Mii_Drvmod = 0x40000, - Mii_mdc = 0x20000, - Mii_mdoen = 0x10000, - Mii_mdo = 0x8000, - Mii_mdi = 0x4000, -}; - -enum MiiStatusBits { - Mii_StatusBusy = 0x80000000, -}; - -enum PMConfigBits { - PM_Enable = 1 << 31, - PM_LongWF = 1 << 30, - PM_Magic = 1 << 29, - PM_LANWake = 1 << 28, - PM_LWPTN = (1 << 27 | 1<< 26), - PM_LinkUp = 1 << 25, - PM_WakeUp = 1 << 24, -}; - -/* Locking rules: - * priv->lock protects most of the fields of priv and most of the - * hardware registers. It does not have to protect against softirqs - * between sc92031_disable_interrupts and sc92031_enable_interrupts; - * it also does not need to be used in ->open and ->stop while the - * device interrupts are off. - * Not having to protect against softirqs is very useful due to heavy - * use of mdelay() at _sc92031_reset. - * Functions prefixed with _sc92031_ must be called with the lock held; - * functions prefixed with sc92031_ must be called without the lock held. - * Use mmiowb() before unlocking if the hardware was written to. - */ - -/* Locking rules for the interrupt: - * - the interrupt and the tasklet never run at the same time - * - neither run between sc92031_disable_interrupts and - * sc92031_enable_interrupt - */ - -struct sc92031_priv { - spinlock_t lock; - /* iomap.h cookie */ - void __iomem *port_base; - /* pci device structure */ - struct pci_dev *pdev; - /* tasklet */ - struct tasklet_struct tasklet; - - /* CPU address of rx ring */ - void *rx_ring; - /* PCI address of rx ring */ - dma_addr_t rx_ring_dma_addr; - /* PCI address of rx ring read pointer */ - dma_addr_t rx_ring_tail; - - /* tx ring write index */ - unsigned tx_head; - /* tx ring read index */ - unsigned tx_tail; - /* CPU address of tx bounce buffer */ - void *tx_bufs; - /* PCI address of tx bounce buffer */ - dma_addr_t tx_bufs_dma_addr; - - /* copies of some hardware registers */ - u32 intr_status; - atomic_t intr_mask; - u32 rx_config; - u32 tx_config; - u32 pm_config; - - /* copy of some flags from dev->flags */ - unsigned int mc_flags; - - /* for ETHTOOL_GSTATS */ - u64 tx_timeouts; - u64 rx_loss; - - /* for dev->get_stats */ - long rx_value; -}; - -/* I don't know which registers can be safely read; however, I can guess - * MAC0 is one of them. */ -static inline void _sc92031_dummy_read(void __iomem *port_base) -{ - ioread32(port_base + MAC0); -} - -static u32 _sc92031_mii_wait(void __iomem *port_base) -{ - u32 mii_status; - - do { - udelay(10); - mii_status = ioread32(port_base + Miistatus); - } while (mii_status & Mii_StatusBusy); - - return mii_status; -} - -static u32 _sc92031_mii_cmd(void __iomem *port_base, u32 cmd0, u32 cmd1) -{ - iowrite32(Mii_Divider, port_base + Miicmd0); - - _sc92031_mii_wait(port_base); - - iowrite32(cmd1, port_base + Miicmd1); - iowrite32(Mii_Divider | cmd0, port_base + Miicmd0); - - return _sc92031_mii_wait(port_base); -} - -static void _sc92031_mii_scan(void __iomem *port_base) -{ - _sc92031_mii_cmd(port_base, Mii_SCAN, 0x1 << 6); -} - -static u16 _sc92031_mii_read(void __iomem *port_base, unsigned reg) -{ - return _sc92031_mii_cmd(port_base, Mii_READ, reg << 6) >> 13; -} - -static void _sc92031_mii_write(void __iomem *port_base, unsigned reg, u16 val) -{ - _sc92031_mii_cmd(port_base, Mii_WRITE, (reg << 6) | ((u32)val << 11)); -} - -static void sc92031_disable_interrupts(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - - /* tell the tasklet/interrupt not to enable interrupts */ - atomic_set(&priv->intr_mask, 0); - wmb(); - - /* stop interrupts */ - iowrite32(0, port_base + IntrMask); - _sc92031_dummy_read(port_base); - mmiowb(); - - /* wait for any concurrent interrupt/tasklet to finish */ - synchronize_irq(dev->irq); - tasklet_disable(&priv->tasklet); -} - -static void sc92031_enable_interrupts(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - - tasklet_enable(&priv->tasklet); - - atomic_set(&priv->intr_mask, IntrBits); - wmb(); - - iowrite32(IntrBits, port_base + IntrMask); - mmiowb(); -} - -static void _sc92031_disable_tx_rx(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - - priv->rx_config &= ~RxEnb; - priv->tx_config &= ~TxEnb; - iowrite32(priv->rx_config, port_base + RxConfig); - iowrite32(priv->tx_config, port_base + TxConfig); -} - -static void _sc92031_enable_tx_rx(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - - priv->rx_config |= RxEnb; - priv->tx_config |= TxEnb; - iowrite32(priv->rx_config, port_base + RxConfig); - iowrite32(priv->tx_config, port_base + TxConfig); -} - -static void _sc92031_tx_clear(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - - while (priv->tx_head - priv->tx_tail > 0) { - priv->tx_tail++; - dev->stats.tx_dropped++; - } - priv->tx_head = priv->tx_tail = 0; -} - -static void _sc92031_set_mar(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - u32 mar0 = 0, mar1 = 0; - - if ((dev->flags & IFF_PROMISC) || - netdev_mc_count(dev) > multicast_filter_limit || - (dev->flags & IFF_ALLMULTI)) - mar0 = mar1 = 0xffffffff; - else if (dev->flags & IFF_MULTICAST) { - struct netdev_hw_addr *ha; - - netdev_for_each_mc_addr(ha, dev) { - u32 crc; - unsigned bit = 0; - - crc = ~ether_crc(ETH_ALEN, ha->addr); - crc >>= 24; - - if (crc & 0x01) bit |= 0x02; - if (crc & 0x02) bit |= 0x01; - if (crc & 0x10) bit |= 0x20; - if (crc & 0x20) bit |= 0x10; - if (crc & 0x40) bit |= 0x08; - if (crc & 0x80) bit |= 0x04; - - if (bit > 31) - mar0 |= 0x1 << (bit - 32); - else - mar1 |= 0x1 << bit; - } - } - - iowrite32(mar0, port_base + MAR0); - iowrite32(mar1, port_base + MAR0 + 4); -} - -static void _sc92031_set_rx_config(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - unsigned int old_mc_flags; - u32 rx_config_bits = 0; - - old_mc_flags = priv->mc_flags; - - if (dev->flags & IFF_PROMISC) - rx_config_bits |= RxSmall | RxHuge | RxErr | RxBroadcast - | RxMulticast | RxAllphys; - - if (dev->flags & (IFF_ALLMULTI | IFF_MULTICAST)) - rx_config_bits |= RxMulticast; - - if (dev->flags & IFF_BROADCAST) - rx_config_bits |= RxBroadcast; - - priv->rx_config &= ~(RxSmall | RxHuge | RxErr | RxBroadcast - | RxMulticast | RxAllphys); - priv->rx_config |= rx_config_bits; - - priv->mc_flags = dev->flags & (IFF_PROMISC | IFF_ALLMULTI - | IFF_MULTICAST | IFF_BROADCAST); - - if (netif_carrier_ok(dev) && priv->mc_flags != old_mc_flags) - iowrite32(priv->rx_config, port_base + RxConfig); -} - -static bool _sc92031_check_media(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - u16 bmsr; - - bmsr = _sc92031_mii_read(port_base, MII_BMSR); - rmb(); - if (bmsr & BMSR_LSTATUS) { - bool speed_100, duplex_full; - u32 flow_ctrl_config = 0; - u16 output_status = _sc92031_mii_read(port_base, - MII_OutputStatus); - _sc92031_mii_scan(port_base); - - speed_100 = output_status & 0x2; - duplex_full = output_status & 0x4; - - /* Initial Tx/Rx configuration */ - priv->rx_config = (0x40 << LowThresholdShift) | (0x1c0 << HighThresholdShift); - priv->tx_config = 0x48800000; - - /* NOTE: vendor driver had dead code here to enable tx padding */ - - if (!speed_100) - priv->tx_config |= 0x80000; - - // configure rx mode - _sc92031_set_rx_config(dev); - - if (duplex_full) { - priv->rx_config |= RxFullDx; - priv->tx_config |= TxFullDx; - flow_ctrl_config = FlowCtrlFullDX | FlowCtrlEnb; - } else { - priv->rx_config &= ~RxFullDx; - priv->tx_config &= ~TxFullDx; - } - - _sc92031_set_mar(dev); - _sc92031_set_rx_config(dev); - _sc92031_enable_tx_rx(dev); - iowrite32(flow_ctrl_config, port_base + FlowCtrlConfig); - - netif_carrier_on(dev); - - if (printk_ratelimit()) - printk(KERN_INFO "%s: link up, %sMbps, %s-duplex\n", - dev->name, - speed_100 ? "100" : "10", - duplex_full ? "full" : "half"); - return true; - } else { - _sc92031_mii_scan(port_base); - - netif_carrier_off(dev); - - _sc92031_disable_tx_rx(dev); - - if (printk_ratelimit()) - printk(KERN_INFO "%s: link down\n", dev->name); - return false; - } -} - -static void _sc92031_phy_reset(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - u32 phy_ctrl; - - phy_ctrl = ioread32(port_base + PhyCtrl); - phy_ctrl &= ~(PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10); - phy_ctrl |= PhyCtrlAne | PhyCtrlReset; - - switch (media) { - default: - case AUTOSELECT: - phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10; - break; - case M10_HALF: - phy_ctrl |= PhyCtrlSpd10; - break; - case M10_FULL: - phy_ctrl |= PhyCtrlDux | PhyCtrlSpd10; - break; - case M100_HALF: - phy_ctrl |= PhyCtrlSpd100; - break; - case M100_FULL: - phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100; - break; - } - - iowrite32(phy_ctrl, port_base + PhyCtrl); - mdelay(10); - - phy_ctrl &= ~PhyCtrlReset; - iowrite32(phy_ctrl, port_base + PhyCtrl); - mdelay(1); - - _sc92031_mii_write(port_base, MII_JAB, - PHY_16_JAB_ENB | PHY_16_PORT_ENB); - _sc92031_mii_scan(port_base); - - netif_carrier_off(dev); - netif_stop_queue(dev); -} - -static void _sc92031_reset(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - - /* disable PM */ - iowrite32(0, port_base + PMConfig); - - /* soft reset the chip */ - iowrite32(Cfg0_Reset, port_base + Config0); - mdelay(200); - - iowrite32(0, port_base + Config0); - mdelay(10); - - /* disable interrupts */ - iowrite32(0, port_base + IntrMask); - - /* clear multicast address */ - iowrite32(0, port_base + MAR0); - iowrite32(0, port_base + MAR0 + 4); - - /* init rx ring */ - iowrite32(priv->rx_ring_dma_addr, port_base + RxbufAddr); - priv->rx_ring_tail = priv->rx_ring_dma_addr; - - /* init tx ring */ - _sc92031_tx_clear(dev); - - /* clear old register values */ - priv->intr_status = 0; - atomic_set(&priv->intr_mask, 0); - priv->rx_config = 0; - priv->tx_config = 0; - priv->mc_flags = 0; - - /* configure rx buffer size */ - /* NOTE: vendor driver had dead code here to enable early tx/rx */ - iowrite32(Cfg1_Rcv64K, port_base + Config1); - - _sc92031_phy_reset(dev); - _sc92031_check_media(dev); - - /* calculate rx fifo overflow */ - priv->rx_value = 0; - - /* enable PM */ - iowrite32(priv->pm_config, port_base + PMConfig); - - /* clear intr register */ - ioread32(port_base + IntrStatus); -} - -static void _sc92031_tx_tasklet(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - - unsigned old_tx_tail; - unsigned entry; - u32 tx_status; - - old_tx_tail = priv->tx_tail; - while (priv->tx_head - priv->tx_tail > 0) { - entry = priv->tx_tail % NUM_TX_DESC; - tx_status = ioread32(port_base + TxStatus0 + entry * 4); - - if (!(tx_status & (TxStatOK | TxUnderrun | TxAborted))) - break; - - priv->tx_tail++; - - if (tx_status & TxStatOK) { - dev->stats.tx_bytes += tx_status & 0x1fff; - dev->stats.tx_packets++; - /* Note: TxCarrierLost is always asserted at 100mbps. */ - dev->stats.collisions += (tx_status >> 22) & 0xf; - } - - if (tx_status & (TxOutOfWindow | TxAborted)) { - dev->stats.tx_errors++; - - if (tx_status & TxAborted) - dev->stats.tx_aborted_errors++; - - if (tx_status & TxCarrierLost) - dev->stats.tx_carrier_errors++; - - if (tx_status & TxOutOfWindow) - dev->stats.tx_window_errors++; - } - - if (tx_status & TxUnderrun) - dev->stats.tx_fifo_errors++; - } - - if (priv->tx_tail != old_tx_tail) - if (netif_queue_stopped(dev)) - netif_wake_queue(dev); -} - -static void _sc92031_rx_tasklet_error(struct net_device *dev, - u32 rx_status, unsigned rx_size) -{ - if(rx_size > (MAX_ETH_FRAME_SIZE + 4) || rx_size < 16) { - dev->stats.rx_errors++; - dev->stats.rx_length_errors++; - } - - if (!(rx_status & RxStatesOK)) { - dev->stats.rx_errors++; - - if (rx_status & (RxHugeFrame | RxSmallFrame)) - dev->stats.rx_length_errors++; - - if (rx_status & RxBadAlign) - dev->stats.rx_frame_errors++; - - if (!(rx_status & RxCRCOK)) - dev->stats.rx_crc_errors++; - } else { - struct sc92031_priv *priv = netdev_priv(dev); - priv->rx_loss++; - } -} - -static void _sc92031_rx_tasklet(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - - dma_addr_t rx_ring_head; - unsigned rx_len; - unsigned rx_ring_offset; - void *rx_ring = priv->rx_ring; - - rx_ring_head = ioread32(port_base + RxBufWPtr); - rmb(); - - /* rx_ring_head is only 17 bits in the RxBufWPtr register. - * we need to change it to 32 bits physical address - */ - rx_ring_head &= (dma_addr_t)(RX_BUF_LEN - 1); - rx_ring_head |= priv->rx_ring_dma_addr & ~(dma_addr_t)(RX_BUF_LEN - 1); - if (rx_ring_head < priv->rx_ring_dma_addr) - rx_ring_head += RX_BUF_LEN; - - if (rx_ring_head >= priv->rx_ring_tail) - rx_len = rx_ring_head - priv->rx_ring_tail; - else - rx_len = RX_BUF_LEN - (priv->rx_ring_tail - rx_ring_head); - - if (!rx_len) - return; - - if (unlikely(rx_len > RX_BUF_LEN)) { - if (printk_ratelimit()) - printk(KERN_ERR "%s: rx packets length > rx buffer\n", - dev->name); - return; - } - - rx_ring_offset = (priv->rx_ring_tail - priv->rx_ring_dma_addr) % RX_BUF_LEN; - - while (rx_len) { - u32 rx_status; - unsigned rx_size, rx_size_align, pkt_size; - struct sk_buff *skb; - - rx_status = le32_to_cpup((__le32 *)(rx_ring + rx_ring_offset)); - rmb(); - - rx_size = rx_status >> 20; - rx_size_align = (rx_size + 3) & ~3; // for 4 bytes aligned - pkt_size = rx_size - 4; // Omit the four octet CRC from the length. - - rx_ring_offset = (rx_ring_offset + 4) % RX_BUF_LEN; - - if (unlikely(rx_status == 0 || - rx_size > (MAX_ETH_FRAME_SIZE + 4) || - rx_size < 16 || - !(rx_status & RxStatesOK))) { - _sc92031_rx_tasklet_error(dev, rx_status, rx_size); - break; - } - - if (unlikely(rx_size_align + 4 > rx_len)) { - if (printk_ratelimit()) - printk(KERN_ERR "%s: rx_len is too small\n", dev->name); - break; - } - - rx_len -= rx_size_align + 4; - - skb = netdev_alloc_skb_ip_align(dev, pkt_size); - if (unlikely(!skb)) { - if (printk_ratelimit()) - printk(KERN_ERR "%s: Couldn't allocate a skb_buff for a packet of size %u\n", - dev->name, pkt_size); - goto next; - } - - if ((rx_ring_offset + pkt_size) > RX_BUF_LEN) { - memcpy(skb_put(skb, RX_BUF_LEN - rx_ring_offset), - rx_ring + rx_ring_offset, RX_BUF_LEN - rx_ring_offset); - memcpy(skb_put(skb, pkt_size - (RX_BUF_LEN - rx_ring_offset)), - rx_ring, pkt_size - (RX_BUF_LEN - rx_ring_offset)); - } else { - memcpy(skb_put(skb, pkt_size), rx_ring + rx_ring_offset, pkt_size); - } - - skb->protocol = eth_type_trans(skb, dev); - netif_rx(skb); - - dev->stats.rx_bytes += pkt_size; - dev->stats.rx_packets++; - - if (rx_status & Rx_Multicast) - dev->stats.multicast++; - - next: - rx_ring_offset = (rx_ring_offset + rx_size_align) % RX_BUF_LEN; - } - mb(); - - priv->rx_ring_tail = rx_ring_head; - iowrite32(priv->rx_ring_tail, port_base + RxBufRPtr); -} - -static void _sc92031_link_tasklet(struct net_device *dev) -{ - if (_sc92031_check_media(dev)) - netif_wake_queue(dev); - else { - netif_stop_queue(dev); - dev->stats.tx_carrier_errors++; - } -} - -static void sc92031_tasklet(unsigned long data) -{ - struct net_device *dev = (struct net_device *)data; - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - u32 intr_status, intr_mask; - - intr_status = priv->intr_status; - - spin_lock(&priv->lock); - - if (unlikely(!netif_running(dev))) - goto out; - - if (intr_status & TxOK) - _sc92031_tx_tasklet(dev); - - if (intr_status & RxOK) - _sc92031_rx_tasklet(dev); - - if (intr_status & RxOverflow) - dev->stats.rx_errors++; - - if (intr_status & TimeOut) { - dev->stats.rx_errors++; - dev->stats.rx_length_errors++; - } - - if (intr_status & (LinkFail | LinkOK)) - _sc92031_link_tasklet(dev); - -out: - intr_mask = atomic_read(&priv->intr_mask); - rmb(); - - iowrite32(intr_mask, port_base + IntrMask); - mmiowb(); - - spin_unlock(&priv->lock); -} - -static irqreturn_t sc92031_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - u32 intr_status, intr_mask; - - /* mask interrupts before clearing IntrStatus */ - iowrite32(0, port_base + IntrMask); - _sc92031_dummy_read(port_base); - - intr_status = ioread32(port_base + IntrStatus); - if (unlikely(intr_status == 0xffffffff)) - return IRQ_NONE; // hardware has gone missing - - intr_status &= IntrBits; - if (!intr_status) - goto out_none; - - priv->intr_status = intr_status; - tasklet_schedule(&priv->tasklet); - - return IRQ_HANDLED; - -out_none: - intr_mask = atomic_read(&priv->intr_mask); - rmb(); - - iowrite32(intr_mask, port_base + IntrMask); - mmiowb(); - - return IRQ_NONE; -} - -static struct net_device_stats *sc92031_get_stats(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - - // FIXME I do not understand what is this trying to do. - if (netif_running(dev)) { - int temp; - - spin_lock_bh(&priv->lock); - - /* Update the error count. */ - temp = (ioread32(port_base + RxStatus0) >> 16) & 0xffff; - - if (temp == 0xffff) { - priv->rx_value += temp; - dev->stats.rx_fifo_errors = priv->rx_value; - } else - dev->stats.rx_fifo_errors = temp + priv->rx_value; - - spin_unlock_bh(&priv->lock); - } - - return &dev->stats; -} - -static netdev_tx_t sc92031_start_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - unsigned len; - unsigned entry; - u32 tx_status; - - if (unlikely(skb->len > TX_BUF_SIZE)) { - dev->stats.tx_dropped++; - goto out; - } - - spin_lock(&priv->lock); - - if (unlikely(!netif_carrier_ok(dev))) { - dev->stats.tx_dropped++; - goto out_unlock; - } - - BUG_ON(priv->tx_head - priv->tx_tail >= NUM_TX_DESC); - - entry = priv->tx_head++ % NUM_TX_DESC; - - skb_copy_and_csum_dev(skb, priv->tx_bufs + entry * TX_BUF_SIZE); - - len = skb->len; - if (len < ETH_ZLEN) { - memset(priv->tx_bufs + entry * TX_BUF_SIZE + len, - 0, ETH_ZLEN - len); - len = ETH_ZLEN; - } - - wmb(); - - if (len < 100) - tx_status = len; - else if (len < 300) - tx_status = 0x30000 | len; - else - tx_status = 0x50000 | len; - - iowrite32(priv->tx_bufs_dma_addr + entry * TX_BUF_SIZE, - port_base + TxAddr0 + entry * 4); - iowrite32(tx_status, port_base + TxStatus0 + entry * 4); - mmiowb(); - - if (priv->tx_head - priv->tx_tail >= NUM_TX_DESC) - netif_stop_queue(dev); - -out_unlock: - spin_unlock(&priv->lock); - -out: - dev_kfree_skb(skb); - - return NETDEV_TX_OK; -} - -static int sc92031_open(struct net_device *dev) -{ - int err; - struct sc92031_priv *priv = netdev_priv(dev); - struct pci_dev *pdev = priv->pdev; - - priv->rx_ring = pci_alloc_consistent(pdev, RX_BUF_LEN, - &priv->rx_ring_dma_addr); - if (unlikely(!priv->rx_ring)) { - err = -ENOMEM; - goto out_alloc_rx_ring; - } - - priv->tx_bufs = pci_alloc_consistent(pdev, TX_BUF_TOT_LEN, - &priv->tx_bufs_dma_addr); - if (unlikely(!priv->tx_bufs)) { - err = -ENOMEM; - goto out_alloc_tx_bufs; - } - priv->tx_head = priv->tx_tail = 0; - - err = request_irq(pdev->irq, sc92031_interrupt, - IRQF_SHARED, dev->name, dev); - if (unlikely(err < 0)) - goto out_request_irq; - - priv->pm_config = 0; - - /* Interrupts already disabled by sc92031_stop or sc92031_probe */ - spin_lock_bh(&priv->lock); - - _sc92031_reset(dev); - mmiowb(); - - spin_unlock_bh(&priv->lock); - sc92031_enable_interrupts(dev); - - if (netif_carrier_ok(dev)) - netif_start_queue(dev); - else - netif_tx_disable(dev); - - return 0; - -out_request_irq: - pci_free_consistent(pdev, TX_BUF_TOT_LEN, priv->tx_bufs, - priv->tx_bufs_dma_addr); -out_alloc_tx_bufs: - pci_free_consistent(pdev, RX_BUF_LEN, priv->rx_ring, - priv->rx_ring_dma_addr); -out_alloc_rx_ring: - return err; -} - -static int sc92031_stop(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - struct pci_dev *pdev = priv->pdev; - - netif_tx_disable(dev); - - /* Disable interrupts, stop Tx and Rx. */ - sc92031_disable_interrupts(dev); - - spin_lock_bh(&priv->lock); - - _sc92031_disable_tx_rx(dev); - _sc92031_tx_clear(dev); - mmiowb(); - - spin_unlock_bh(&priv->lock); - - free_irq(pdev->irq, dev); - pci_free_consistent(pdev, TX_BUF_TOT_LEN, priv->tx_bufs, - priv->tx_bufs_dma_addr); - pci_free_consistent(pdev, RX_BUF_LEN, priv->rx_ring, - priv->rx_ring_dma_addr); - - return 0; -} - -static void sc92031_set_multicast_list(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - - spin_lock_bh(&priv->lock); - - _sc92031_set_mar(dev); - _sc92031_set_rx_config(dev); - mmiowb(); - - spin_unlock_bh(&priv->lock); -} - -static void sc92031_tx_timeout(struct net_device *dev) -{ - struct sc92031_priv *priv = netdev_priv(dev); - - /* Disable interrupts by clearing the interrupt mask.*/ - sc92031_disable_interrupts(dev); - - spin_lock(&priv->lock); - - priv->tx_timeouts++; - - _sc92031_reset(dev); - mmiowb(); - - spin_unlock(&priv->lock); - - /* enable interrupts */ - sc92031_enable_interrupts(dev); - - if (netif_carrier_ok(dev)) - netif_wake_queue(dev); -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void sc92031_poll_controller(struct net_device *dev) -{ - disable_irq(dev->irq); - if (sc92031_interrupt(dev->irq, dev) != IRQ_NONE) - sc92031_tasklet((unsigned long)dev); - enable_irq(dev->irq); -} -#endif - -static int sc92031_ethtool_get_settings(struct net_device *dev, - struct ethtool_cmd *cmd) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - u8 phy_address; - u32 phy_ctrl; - u16 output_status; - - spin_lock_bh(&priv->lock); - - phy_address = ioread32(port_base + Miicmd1) >> 27; - phy_ctrl = ioread32(port_base + PhyCtrl); - - output_status = _sc92031_mii_read(port_base, MII_OutputStatus); - _sc92031_mii_scan(port_base); - mmiowb(); - - spin_unlock_bh(&priv->lock); - - cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full - | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full - | SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII; - - cmd->advertising = ADVERTISED_TP | ADVERTISED_MII; - - if ((phy_ctrl & (PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10)) - == (PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10)) - cmd->advertising |= ADVERTISED_Autoneg; - - if ((phy_ctrl & PhyCtrlSpd10) == PhyCtrlSpd10) - cmd->advertising |= ADVERTISED_10baseT_Half; - - if ((phy_ctrl & (PhyCtrlSpd10 | PhyCtrlDux)) - == (PhyCtrlSpd10 | PhyCtrlDux)) - cmd->advertising |= ADVERTISED_10baseT_Full; - - if ((phy_ctrl & PhyCtrlSpd100) == PhyCtrlSpd100) - cmd->advertising |= ADVERTISED_100baseT_Half; - - if ((phy_ctrl & (PhyCtrlSpd100 | PhyCtrlDux)) - == (PhyCtrlSpd100 | PhyCtrlDux)) - cmd->advertising |= ADVERTISED_100baseT_Full; - - if (phy_ctrl & PhyCtrlAne) - cmd->advertising |= ADVERTISED_Autoneg; - - ethtool_cmd_speed_set(cmd, - (output_status & 0x2) ? SPEED_100 : SPEED_10); - cmd->duplex = (output_status & 0x4) ? DUPLEX_FULL : DUPLEX_HALF; - cmd->port = PORT_MII; - cmd->phy_address = phy_address; - cmd->transceiver = XCVR_INTERNAL; - cmd->autoneg = (phy_ctrl & PhyCtrlAne) ? AUTONEG_ENABLE : AUTONEG_DISABLE; - - return 0; -} - -static int sc92031_ethtool_set_settings(struct net_device *dev, - struct ethtool_cmd *cmd) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - u32 speed = ethtool_cmd_speed(cmd); - u32 phy_ctrl; - u32 old_phy_ctrl; - - if (!(speed == SPEED_10 || speed == SPEED_100)) - return -EINVAL; - if (!(cmd->duplex == DUPLEX_HALF || cmd->duplex == DUPLEX_FULL)) - return -EINVAL; - if (!(cmd->port == PORT_MII)) - return -EINVAL; - if (!(cmd->phy_address == 0x1f)) - return -EINVAL; - if (!(cmd->transceiver == XCVR_INTERNAL)) - return -EINVAL; - if (!(cmd->autoneg == AUTONEG_DISABLE || cmd->autoneg == AUTONEG_ENABLE)) - return -EINVAL; - - if (cmd->autoneg == AUTONEG_ENABLE) { - if (!(cmd->advertising & (ADVERTISED_Autoneg - | ADVERTISED_100baseT_Full - | ADVERTISED_100baseT_Half - | ADVERTISED_10baseT_Full - | ADVERTISED_10baseT_Half))) - return -EINVAL; - - phy_ctrl = PhyCtrlAne; - - // FIXME: I'm not sure what the original code was trying to do - if (cmd->advertising & ADVERTISED_Autoneg) - phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10; - if (cmd->advertising & ADVERTISED_100baseT_Full) - phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100; - if (cmd->advertising & ADVERTISED_100baseT_Half) - phy_ctrl |= PhyCtrlSpd100; - if (cmd->advertising & ADVERTISED_10baseT_Full) - phy_ctrl |= PhyCtrlSpd10 | PhyCtrlDux; - if (cmd->advertising & ADVERTISED_10baseT_Half) - phy_ctrl |= PhyCtrlSpd10; - } else { - // FIXME: Whole branch guessed - phy_ctrl = 0; - - if (speed == SPEED_10) - phy_ctrl |= PhyCtrlSpd10; - else /* cmd->speed == SPEED_100 */ - phy_ctrl |= PhyCtrlSpd100; - - if (cmd->duplex == DUPLEX_FULL) - phy_ctrl |= PhyCtrlDux; - } - - spin_lock_bh(&priv->lock); - - old_phy_ctrl = ioread32(port_base + PhyCtrl); - phy_ctrl |= old_phy_ctrl & ~(PhyCtrlAne | PhyCtrlDux - | PhyCtrlSpd100 | PhyCtrlSpd10); - if (phy_ctrl != old_phy_ctrl) - iowrite32(phy_ctrl, port_base + PhyCtrl); - - spin_unlock_bh(&priv->lock); - - return 0; -} - -static void sc92031_ethtool_get_wol(struct net_device *dev, - struct ethtool_wolinfo *wolinfo) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - u32 pm_config; - - spin_lock_bh(&priv->lock); - pm_config = ioread32(port_base + PMConfig); - spin_unlock_bh(&priv->lock); - - // FIXME: Guessed - wolinfo->supported = WAKE_PHY | WAKE_MAGIC - | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; - wolinfo->wolopts = 0; - - if (pm_config & PM_LinkUp) - wolinfo->wolopts |= WAKE_PHY; - - if (pm_config & PM_Magic) - wolinfo->wolopts |= WAKE_MAGIC; - - if (pm_config & PM_WakeUp) - // FIXME: Guessed - wolinfo->wolopts |= WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; -} - -static int sc92031_ethtool_set_wol(struct net_device *dev, - struct ethtool_wolinfo *wolinfo) -{ - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - u32 pm_config; - - spin_lock_bh(&priv->lock); - - pm_config = ioread32(port_base + PMConfig) - & ~(PM_LinkUp | PM_Magic | PM_WakeUp); - - if (wolinfo->wolopts & WAKE_PHY) - pm_config |= PM_LinkUp; - - if (wolinfo->wolopts & WAKE_MAGIC) - pm_config |= PM_Magic; - - // FIXME: Guessed - if (wolinfo->wolopts & (WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)) - pm_config |= PM_WakeUp; - - priv->pm_config = pm_config; - iowrite32(pm_config, port_base + PMConfig); - mmiowb(); - - spin_unlock_bh(&priv->lock); - - return 0; -} - -static int sc92031_ethtool_nway_reset(struct net_device *dev) -{ - int err = 0; - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem *port_base = priv->port_base; - u16 bmcr; - - spin_lock_bh(&priv->lock); - - bmcr = _sc92031_mii_read(port_base, MII_BMCR); - if (!(bmcr & BMCR_ANENABLE)) { - err = -EINVAL; - goto out; - } - - _sc92031_mii_write(port_base, MII_BMCR, bmcr | BMCR_ANRESTART); - -out: - _sc92031_mii_scan(port_base); - mmiowb(); - - spin_unlock_bh(&priv->lock); - - return err; -} - -static const char sc92031_ethtool_stats_strings[SILAN_STATS_NUM][ETH_GSTRING_LEN] = { - "tx_timeout", - "rx_loss", -}; - -static void sc92031_ethtool_get_strings(struct net_device *dev, - u32 stringset, u8 *data) -{ - if (stringset == ETH_SS_STATS) - memcpy(data, sc92031_ethtool_stats_strings, - SILAN_STATS_NUM * ETH_GSTRING_LEN); -} - -static int sc92031_ethtool_get_sset_count(struct net_device *dev, int sset) -{ - switch (sset) { - case ETH_SS_STATS: - return SILAN_STATS_NUM; - default: - return -EOPNOTSUPP; - } -} - -static void sc92031_ethtool_get_ethtool_stats(struct net_device *dev, - struct ethtool_stats *stats, u64 *data) -{ - struct sc92031_priv *priv = netdev_priv(dev); - - spin_lock_bh(&priv->lock); - data[0] = priv->tx_timeouts; - data[1] = priv->rx_loss; - spin_unlock_bh(&priv->lock); -} - -static const struct ethtool_ops sc92031_ethtool_ops = { - .get_settings = sc92031_ethtool_get_settings, - .set_settings = sc92031_ethtool_set_settings, - .get_wol = sc92031_ethtool_get_wol, - .set_wol = sc92031_ethtool_set_wol, - .nway_reset = sc92031_ethtool_nway_reset, - .get_link = ethtool_op_get_link, - .get_strings = sc92031_ethtool_get_strings, - .get_sset_count = sc92031_ethtool_get_sset_count, - .get_ethtool_stats = sc92031_ethtool_get_ethtool_stats, -}; - - -static const struct net_device_ops sc92031_netdev_ops = { - .ndo_get_stats = sc92031_get_stats, - .ndo_start_xmit = sc92031_start_xmit, - .ndo_open = sc92031_open, - .ndo_stop = sc92031_stop, - .ndo_set_rx_mode = sc92031_set_multicast_list, - .ndo_change_mtu = eth_change_mtu, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = eth_mac_addr, - .ndo_tx_timeout = sc92031_tx_timeout, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = sc92031_poll_controller, -#endif -}; - -static int __devinit sc92031_probe(struct pci_dev *pdev, - const struct pci_device_id *id) -{ - int err; - void __iomem* port_base; - struct net_device *dev; - struct sc92031_priv *priv; - u32 mac0, mac1; - unsigned long base_addr; - - err = pci_enable_device(pdev); - if (unlikely(err < 0)) - goto out_enable_device; - - pci_set_master(pdev); - - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (unlikely(err < 0)) - goto out_set_dma_mask; - - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); - if (unlikely(err < 0)) - goto out_set_dma_mask; - - err = pci_request_regions(pdev, SC92031_NAME); - if (unlikely(err < 0)) - goto out_request_regions; - - port_base = pci_iomap(pdev, SC92031_USE_BAR, 0); - if (unlikely(!port_base)) { - err = -EIO; - goto out_iomap; - } - - dev = alloc_etherdev(sizeof(struct sc92031_priv)); - if (unlikely(!dev)) { - err = -ENOMEM; - goto out_alloc_etherdev; - } - - pci_set_drvdata(pdev, dev); - SET_NETDEV_DEV(dev, &pdev->dev); - -#if SC92031_USE_BAR == 0 - dev->mem_start = pci_resource_start(pdev, SC92031_USE_BAR); - dev->mem_end = pci_resource_end(pdev, SC92031_USE_BAR); -#elif SC92031_USE_BAR == 1 - dev->base_addr = pci_resource_start(pdev, SC92031_USE_BAR); -#endif - dev->irq = pdev->irq; - - /* faked with skb_copy_and_csum_dev */ - dev->features = NETIF_F_SG | NETIF_F_HIGHDMA | - NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; - - dev->netdev_ops = &sc92031_netdev_ops; - dev->watchdog_timeo = TX_TIMEOUT; - dev->ethtool_ops = &sc92031_ethtool_ops; - - priv = netdev_priv(dev); - spin_lock_init(&priv->lock); - priv->port_base = port_base; - priv->pdev = pdev; - tasklet_init(&priv->tasklet, sc92031_tasklet, (unsigned long)dev); - /* Fudge tasklet count so the call to sc92031_enable_interrupts at - * sc92031_open will work correctly */ - tasklet_disable_nosync(&priv->tasklet); - - /* PCI PM Wakeup */ - iowrite32((~PM_LongWF & ~PM_LWPTN) | PM_Enable, port_base + PMConfig); - - mac0 = ioread32(port_base + MAC0); - mac1 = ioread32(port_base + MAC0 + 4); - dev->dev_addr[0] = dev->perm_addr[0] = mac0 >> 24; - dev->dev_addr[1] = dev->perm_addr[1] = mac0 >> 16; - dev->dev_addr[2] = dev->perm_addr[2] = mac0 >> 8; - dev->dev_addr[3] = dev->perm_addr[3] = mac0; - dev->dev_addr[4] = dev->perm_addr[4] = mac1 >> 8; - dev->dev_addr[5] = dev->perm_addr[5] = mac1; - - err = register_netdev(dev); - if (err < 0) - goto out_register_netdev; - -#if SC92031_USE_BAR == 0 - base_addr = dev->mem_start; -#elif SC92031_USE_BAR == 1 - base_addr = dev->base_addr; -#endif - printk(KERN_INFO "%s: SC92031 at 0x%lx, %pM, IRQ %d\n", dev->name, - base_addr, dev->dev_addr, dev->irq); - - return 0; - -out_register_netdev: - free_netdev(dev); -out_alloc_etherdev: - pci_iounmap(pdev, port_base); -out_iomap: - pci_release_regions(pdev); -out_request_regions: -out_set_dma_mask: - pci_disable_device(pdev); -out_enable_device: - return err; -} - -static void __devexit sc92031_remove(struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct sc92031_priv *priv = netdev_priv(dev); - void __iomem* port_base = priv->port_base; - - unregister_netdev(dev); - free_netdev(dev); - pci_iounmap(pdev, port_base); - pci_release_regions(pdev); - pci_disable_device(pdev); -} - -static int sc92031_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct sc92031_priv *priv = netdev_priv(dev); - - pci_save_state(pdev); - - if (!netif_running(dev)) - goto out; - - netif_device_detach(dev); - - /* Disable interrupts, stop Tx and Rx. */ - sc92031_disable_interrupts(dev); - - spin_lock_bh(&priv->lock); - - _sc92031_disable_tx_rx(dev); - _sc92031_tx_clear(dev); - mmiowb(); - - spin_unlock_bh(&priv->lock); - -out: - pci_set_power_state(pdev, pci_choose_state(pdev, state)); - - return 0; -} - -static int sc92031_resume(struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct sc92031_priv *priv = netdev_priv(dev); - - pci_restore_state(pdev); - pci_set_power_state(pdev, PCI_D0); - - if (!netif_running(dev)) - goto out; - - /* Interrupts already disabled by sc92031_suspend */ - spin_lock_bh(&priv->lock); - - _sc92031_reset(dev); - mmiowb(); - - spin_unlock_bh(&priv->lock); - sc92031_enable_interrupts(dev); - - netif_device_attach(dev); - - if (netif_carrier_ok(dev)) - netif_wake_queue(dev); - else - netif_tx_disable(dev); - -out: - return 0; -} - -static DEFINE_PCI_DEVICE_TABLE(sc92031_pci_device_id_table) = { - { PCI_DEVICE(PCI_VENDOR_ID_SILAN, 0x2031) }, - { PCI_DEVICE(PCI_VENDOR_ID_SILAN, 0x8139) }, - { PCI_DEVICE(0x1088, 0x2031) }, - { 0, } -}; -MODULE_DEVICE_TABLE(pci, sc92031_pci_device_id_table); - -static struct pci_driver sc92031_pci_driver = { - .name = SC92031_NAME, - .id_table = sc92031_pci_device_id_table, - .probe = sc92031_probe, - .remove = __devexit_p(sc92031_remove), - .suspend = sc92031_suspend, - .resume = sc92031_resume, -}; - -static int __init sc92031_init(void) -{ - return pci_register_driver(&sc92031_pci_driver); -} - -static void __exit sc92031_exit(void) -{ - pci_unregister_driver(&sc92031_pci_driver); -} - -module_init(sc92031_init); -module_exit(sc92031_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Cesar Eduardo Barros "); -MODULE_DESCRIPTION("Silan SC92031 PCI Fast Ethernet Adapter driver"); diff --git a/drivers/net/ethernet/silan/Kconfig b/drivers/net/ethernet/silan/Kconfig new file mode 100644 index 000000000000..ae1ce170864d --- /dev/null +++ b/drivers/net/ethernet/silan/Kconfig @@ -0,0 +1,33 @@ +# +# Silan device configuration +# + +config NET_VENDOR_SILAN + bool "Silan devices" + default y + depends on PCI && EXPERIMENTAL + ---help--- + If you have a network (Ethernet) card belonging to this class, say Y + and read the Ethernet-HOWTO, available from + . + + Note that the answer to this question doesn't directly affect the + kernel: saying N will just cause the configurator to skip all + the questions about Silan devices. If you say Y, you will be asked for + your specific card in the following questions. + +if NET_VENDOR_SILAN + +config SC92031 + tristate "Silan SC92031 PCI Fast Ethernet Adapter driver (EXPERIMENTAL)" + depends on PCI && EXPERIMENTAL + select CRC32 + ---help--- + This is a driver for the Fast Ethernet PCI network cards based on + the Silan SC92031 chip (sometimes also called Rsltek 8139D). If you + have one of these, say Y here. + + To compile this driver as a module, choose M here: the module + will be called sc92031. This is recommended. + +endif # NET_VENDOR_SILAN diff --git a/drivers/net/ethernet/silan/Makefile b/drivers/net/ethernet/silan/Makefile new file mode 100644 index 000000000000..4ad3523dcb92 --- /dev/null +++ b/drivers/net/ethernet/silan/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the Silan network device drivers. +# + +obj-$(CONFIG_SC92031) += sc92031.o diff --git a/drivers/net/ethernet/silan/sc92031.c b/drivers/net/ethernet/silan/sc92031.c new file mode 100644 index 000000000000..a284d6440538 --- /dev/null +++ b/drivers/net/ethernet/silan/sc92031.c @@ -0,0 +1,1609 @@ +/* Silan SC92031 PCI Fast Ethernet Adapter driver + * + * Based on vendor drivers: + * Silan Fast Ethernet Netcard Driver: + * MODULE_AUTHOR ("gaoyonghong"); + * MODULE_DESCRIPTION ("SILAN Fast Ethernet driver"); + * MODULE_LICENSE("GPL"); + * 8139D Fast Ethernet driver: + * (C) 2002 by gaoyonghong + * MODULE_AUTHOR ("gaoyonghong"); + * MODULE_DESCRIPTION ("Rsltek 8139D PCI Fast Ethernet Adapter driver"); + * MODULE_LICENSE("GPL"); + * Both are almost identical and seem to be based on pci-skeleton.c + * + * Rewritten for 2.6 by Cesar Eduardo Barros + * + * A datasheet for this chip can be found at + * http://www.silan.com.cn/english/product/pdf/SC92031AY.pdf + */ + +/* Note about set_mac_address: I don't know how to change the hardware + * matching, so you need to enable IFF_PROMISC when using it. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define SC92031_NAME "sc92031" + +/* BAR 0 is MMIO, BAR 1 is PIO */ +#ifndef SC92031_USE_BAR +#define SC92031_USE_BAR 0 +#endif + +/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */ +static int multicast_filter_limit = 64; +module_param(multicast_filter_limit, int, 0); +MODULE_PARM_DESC(multicast_filter_limit, + "Maximum number of filtered multicast addresses"); + +static int media; +module_param(media, int, 0); +MODULE_PARM_DESC(media, "Media type (0x00 = autodetect," + " 0x01 = 10M half, 0x02 = 10M full," + " 0x04 = 100M half, 0x08 = 100M full)"); + +/* Size of the in-memory receive ring. */ +#define RX_BUF_LEN_IDX 3 /* 0==8K, 1==16K, 2==32K, 3==64K ,4==128K*/ +#define RX_BUF_LEN (8192 << RX_BUF_LEN_IDX) + +/* Number of Tx descriptor registers. */ +#define NUM_TX_DESC 4 + +/* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/ +#define MAX_ETH_FRAME_SIZE 1536 + +/* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */ +#define TX_BUF_SIZE MAX_ETH_FRAME_SIZE +#define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC) + +/* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */ +#define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */ + +/* Time in jiffies before concluding the transmitter is hung. */ +#define TX_TIMEOUT (4*HZ) + +#define SILAN_STATS_NUM 2 /* number of ETHTOOL_GSTATS */ + +/* media options */ +#define AUTOSELECT 0x00 +#define M10_HALF 0x01 +#define M10_FULL 0x02 +#define M100_HALF 0x04 +#define M100_FULL 0x08 + + /* Symbolic offsets to registers. */ +enum silan_registers { + Config0 = 0x00, // Config0 + Config1 = 0x04, // Config1 + RxBufWPtr = 0x08, // Rx buffer writer poiter + IntrStatus = 0x0C, // Interrupt status + IntrMask = 0x10, // Interrupt mask + RxbufAddr = 0x14, // Rx buffer start address + RxBufRPtr = 0x18, // Rx buffer read pointer + Txstatusall = 0x1C, // Transmit status of all descriptors + TxStatus0 = 0x20, // Transmit status (Four 32bit registers). + TxAddr0 = 0x30, // Tx descriptors (also four 32bit). + RxConfig = 0x40, // Rx configuration + MAC0 = 0x44, // Ethernet hardware address. + MAR0 = 0x4C, // Multicast filter. + RxStatus0 = 0x54, // Rx status + TxConfig = 0x5C, // Tx configuration + PhyCtrl = 0x60, // physical control + FlowCtrlConfig = 0x64, // flow control + Miicmd0 = 0x68, // Mii command0 register + Miicmd1 = 0x6C, // Mii command1 register + Miistatus = 0x70, // Mii status register + Timercnt = 0x74, // Timer counter register + TimerIntr = 0x78, // Timer interrupt register + PMConfig = 0x7C, // Power Manager configuration + CRC0 = 0x80, // Power Manager CRC ( Two 32bit regisers) + Wakeup0 = 0x88, // power Manager wakeup( Eight 64bit regiser) + LSBCRC0 = 0xC8, // power Manager LSBCRC(Two 32bit regiser) + TestD0 = 0xD0, + TestD4 = 0xD4, + TestD8 = 0xD8, +}; + +#define MII_JAB 16 +#define MII_OutputStatus 24 + +#define PHY_16_JAB_ENB 0x1000 +#define PHY_16_PORT_ENB 0x1 + +enum IntrStatusBits { + LinkFail = 0x80000000, + LinkOK = 0x40000000, + TimeOut = 0x20000000, + RxOverflow = 0x0040, + RxOK = 0x0020, + TxOK = 0x0001, + IntrBits = LinkFail|LinkOK|TimeOut|RxOverflow|RxOK|TxOK, +}; + +enum TxStatusBits { + TxCarrierLost = 0x20000000, + TxAborted = 0x10000000, + TxOutOfWindow = 0x08000000, + TxNccShift = 22, + EarlyTxThresShift = 16, + TxStatOK = 0x8000, + TxUnderrun = 0x4000, + TxOwn = 0x2000, +}; + +enum RxStatusBits { + RxStatesOK = 0x80000, + RxBadAlign = 0x40000, + RxHugeFrame = 0x20000, + RxSmallFrame = 0x10000, + RxCRCOK = 0x8000, + RxCrlFrame = 0x4000, + Rx_Broadcast = 0x2000, + Rx_Multicast = 0x1000, + RxAddrMatch = 0x0800, + MiiErr = 0x0400, +}; + +enum RxConfigBits { + RxFullDx = 0x80000000, + RxEnb = 0x40000000, + RxSmall = 0x20000000, + RxHuge = 0x10000000, + RxErr = 0x08000000, + RxAllphys = 0x04000000, + RxMulticast = 0x02000000, + RxBroadcast = 0x01000000, + RxLoopBack = (1 << 23) | (1 << 22), + LowThresholdShift = 12, + HighThresholdShift = 2, +}; + +enum TxConfigBits { + TxFullDx = 0x80000000, + TxEnb = 0x40000000, + TxEnbPad = 0x20000000, + TxEnbHuge = 0x10000000, + TxEnbFCS = 0x08000000, + TxNoBackOff = 0x04000000, + TxEnbPrem = 0x02000000, + TxCareLostCrs = 0x1000000, + TxExdCollNum = 0xf00000, + TxDataRate = 0x80000, +}; + +enum PhyCtrlconfigbits { + PhyCtrlAne = 0x80000000, + PhyCtrlSpd100 = 0x40000000, + PhyCtrlSpd10 = 0x20000000, + PhyCtrlPhyBaseAddr = 0x1f000000, + PhyCtrlDux = 0x800000, + PhyCtrlReset = 0x400000, +}; + +enum FlowCtrlConfigBits { + FlowCtrlFullDX = 0x80000000, + FlowCtrlEnb = 0x40000000, +}; + +enum Config0Bits { + Cfg0_Reset = 0x80000000, + Cfg0_Anaoff = 0x40000000, + Cfg0_LDPS = 0x20000000, +}; + +enum Config1Bits { + Cfg1_EarlyRx = 1 << 31, + Cfg1_EarlyTx = 1 << 30, + + //rx buffer size + Cfg1_Rcv8K = 0x0, + Cfg1_Rcv16K = 0x1, + Cfg1_Rcv32K = 0x3, + Cfg1_Rcv64K = 0x7, + Cfg1_Rcv128K = 0xf, +}; + +enum MiiCmd0Bits { + Mii_Divider = 0x20000000, + Mii_WRITE = 0x400000, + Mii_READ = 0x200000, + Mii_SCAN = 0x100000, + Mii_Tamod = 0x80000, + Mii_Drvmod = 0x40000, + Mii_mdc = 0x20000, + Mii_mdoen = 0x10000, + Mii_mdo = 0x8000, + Mii_mdi = 0x4000, +}; + +enum MiiStatusBits { + Mii_StatusBusy = 0x80000000, +}; + +enum PMConfigBits { + PM_Enable = 1 << 31, + PM_LongWF = 1 << 30, + PM_Magic = 1 << 29, + PM_LANWake = 1 << 28, + PM_LWPTN = (1 << 27 | 1<< 26), + PM_LinkUp = 1 << 25, + PM_WakeUp = 1 << 24, +}; + +/* Locking rules: + * priv->lock protects most of the fields of priv and most of the + * hardware registers. It does not have to protect against softirqs + * between sc92031_disable_interrupts and sc92031_enable_interrupts; + * it also does not need to be used in ->open and ->stop while the + * device interrupts are off. + * Not having to protect against softirqs is very useful due to heavy + * use of mdelay() at _sc92031_reset. + * Functions prefixed with _sc92031_ must be called with the lock held; + * functions prefixed with sc92031_ must be called without the lock held. + * Use mmiowb() before unlocking if the hardware was written to. + */ + +/* Locking rules for the interrupt: + * - the interrupt and the tasklet never run at the same time + * - neither run between sc92031_disable_interrupts and + * sc92031_enable_interrupt + */ + +struct sc92031_priv { + spinlock_t lock; + /* iomap.h cookie */ + void __iomem *port_base; + /* pci device structure */ + struct pci_dev *pdev; + /* tasklet */ + struct tasklet_struct tasklet; + + /* CPU address of rx ring */ + void *rx_ring; + /* PCI address of rx ring */ + dma_addr_t rx_ring_dma_addr; + /* PCI address of rx ring read pointer */ + dma_addr_t rx_ring_tail; + + /* tx ring write index */ + unsigned tx_head; + /* tx ring read index */ + unsigned tx_tail; + /* CPU address of tx bounce buffer */ + void *tx_bufs; + /* PCI address of tx bounce buffer */ + dma_addr_t tx_bufs_dma_addr; + + /* copies of some hardware registers */ + u32 intr_status; + atomic_t intr_mask; + u32 rx_config; + u32 tx_config; + u32 pm_config; + + /* copy of some flags from dev->flags */ + unsigned int mc_flags; + + /* for ETHTOOL_GSTATS */ + u64 tx_timeouts; + u64 rx_loss; + + /* for dev->get_stats */ + long rx_value; +}; + +/* I don't know which registers can be safely read; however, I can guess + * MAC0 is one of them. */ +static inline void _sc92031_dummy_read(void __iomem *port_base) +{ + ioread32(port_base + MAC0); +} + +static u32 _sc92031_mii_wait(void __iomem *port_base) +{ + u32 mii_status; + + do { + udelay(10); + mii_status = ioread32(port_base + Miistatus); + } while (mii_status & Mii_StatusBusy); + + return mii_status; +} + +static u32 _sc92031_mii_cmd(void __iomem *port_base, u32 cmd0, u32 cmd1) +{ + iowrite32(Mii_Divider, port_base + Miicmd0); + + _sc92031_mii_wait(port_base); + + iowrite32(cmd1, port_base + Miicmd1); + iowrite32(Mii_Divider | cmd0, port_base + Miicmd0); + + return _sc92031_mii_wait(port_base); +} + +static void _sc92031_mii_scan(void __iomem *port_base) +{ + _sc92031_mii_cmd(port_base, Mii_SCAN, 0x1 << 6); +} + +static u16 _sc92031_mii_read(void __iomem *port_base, unsigned reg) +{ + return _sc92031_mii_cmd(port_base, Mii_READ, reg << 6) >> 13; +} + +static void _sc92031_mii_write(void __iomem *port_base, unsigned reg, u16 val) +{ + _sc92031_mii_cmd(port_base, Mii_WRITE, (reg << 6) | ((u32)val << 11)); +} + +static void sc92031_disable_interrupts(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + + /* tell the tasklet/interrupt not to enable interrupts */ + atomic_set(&priv->intr_mask, 0); + wmb(); + + /* stop interrupts */ + iowrite32(0, port_base + IntrMask); + _sc92031_dummy_read(port_base); + mmiowb(); + + /* wait for any concurrent interrupt/tasklet to finish */ + synchronize_irq(dev->irq); + tasklet_disable(&priv->tasklet); +} + +static void sc92031_enable_interrupts(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + + tasklet_enable(&priv->tasklet); + + atomic_set(&priv->intr_mask, IntrBits); + wmb(); + + iowrite32(IntrBits, port_base + IntrMask); + mmiowb(); +} + +static void _sc92031_disable_tx_rx(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + + priv->rx_config &= ~RxEnb; + priv->tx_config &= ~TxEnb; + iowrite32(priv->rx_config, port_base + RxConfig); + iowrite32(priv->tx_config, port_base + TxConfig); +} + +static void _sc92031_enable_tx_rx(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + + priv->rx_config |= RxEnb; + priv->tx_config |= TxEnb; + iowrite32(priv->rx_config, port_base + RxConfig); + iowrite32(priv->tx_config, port_base + TxConfig); +} + +static void _sc92031_tx_clear(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + + while (priv->tx_head - priv->tx_tail > 0) { + priv->tx_tail++; + dev->stats.tx_dropped++; + } + priv->tx_head = priv->tx_tail = 0; +} + +static void _sc92031_set_mar(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + u32 mar0 = 0, mar1 = 0; + + if ((dev->flags & IFF_PROMISC) || + netdev_mc_count(dev) > multicast_filter_limit || + (dev->flags & IFF_ALLMULTI)) + mar0 = mar1 = 0xffffffff; + else if (dev->flags & IFF_MULTICAST) { + struct netdev_hw_addr *ha; + + netdev_for_each_mc_addr(ha, dev) { + u32 crc; + unsigned bit = 0; + + crc = ~ether_crc(ETH_ALEN, ha->addr); + crc >>= 24; + + if (crc & 0x01) bit |= 0x02; + if (crc & 0x02) bit |= 0x01; + if (crc & 0x10) bit |= 0x20; + if (crc & 0x20) bit |= 0x10; + if (crc & 0x40) bit |= 0x08; + if (crc & 0x80) bit |= 0x04; + + if (bit > 31) + mar0 |= 0x1 << (bit - 32); + else + mar1 |= 0x1 << bit; + } + } + + iowrite32(mar0, port_base + MAR0); + iowrite32(mar1, port_base + MAR0 + 4); +} + +static void _sc92031_set_rx_config(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + unsigned int old_mc_flags; + u32 rx_config_bits = 0; + + old_mc_flags = priv->mc_flags; + + if (dev->flags & IFF_PROMISC) + rx_config_bits |= RxSmall | RxHuge | RxErr | RxBroadcast + | RxMulticast | RxAllphys; + + if (dev->flags & (IFF_ALLMULTI | IFF_MULTICAST)) + rx_config_bits |= RxMulticast; + + if (dev->flags & IFF_BROADCAST) + rx_config_bits |= RxBroadcast; + + priv->rx_config &= ~(RxSmall | RxHuge | RxErr | RxBroadcast + | RxMulticast | RxAllphys); + priv->rx_config |= rx_config_bits; + + priv->mc_flags = dev->flags & (IFF_PROMISC | IFF_ALLMULTI + | IFF_MULTICAST | IFF_BROADCAST); + + if (netif_carrier_ok(dev) && priv->mc_flags != old_mc_flags) + iowrite32(priv->rx_config, port_base + RxConfig); +} + +static bool _sc92031_check_media(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + u16 bmsr; + + bmsr = _sc92031_mii_read(port_base, MII_BMSR); + rmb(); + if (bmsr & BMSR_LSTATUS) { + bool speed_100, duplex_full; + u32 flow_ctrl_config = 0; + u16 output_status = _sc92031_mii_read(port_base, + MII_OutputStatus); + _sc92031_mii_scan(port_base); + + speed_100 = output_status & 0x2; + duplex_full = output_status & 0x4; + + /* Initial Tx/Rx configuration */ + priv->rx_config = (0x40 << LowThresholdShift) | (0x1c0 << HighThresholdShift); + priv->tx_config = 0x48800000; + + /* NOTE: vendor driver had dead code here to enable tx padding */ + + if (!speed_100) + priv->tx_config |= 0x80000; + + // configure rx mode + _sc92031_set_rx_config(dev); + + if (duplex_full) { + priv->rx_config |= RxFullDx; + priv->tx_config |= TxFullDx; + flow_ctrl_config = FlowCtrlFullDX | FlowCtrlEnb; + } else { + priv->rx_config &= ~RxFullDx; + priv->tx_config &= ~TxFullDx; + } + + _sc92031_set_mar(dev); + _sc92031_set_rx_config(dev); + _sc92031_enable_tx_rx(dev); + iowrite32(flow_ctrl_config, port_base + FlowCtrlConfig); + + netif_carrier_on(dev); + + if (printk_ratelimit()) + printk(KERN_INFO "%s: link up, %sMbps, %s-duplex\n", + dev->name, + speed_100 ? "100" : "10", + duplex_full ? "full" : "half"); + return true; + } else { + _sc92031_mii_scan(port_base); + + netif_carrier_off(dev); + + _sc92031_disable_tx_rx(dev); + + if (printk_ratelimit()) + printk(KERN_INFO "%s: link down\n", dev->name); + return false; + } +} + +static void _sc92031_phy_reset(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + u32 phy_ctrl; + + phy_ctrl = ioread32(port_base + PhyCtrl); + phy_ctrl &= ~(PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10); + phy_ctrl |= PhyCtrlAne | PhyCtrlReset; + + switch (media) { + default: + case AUTOSELECT: + phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10; + break; + case M10_HALF: + phy_ctrl |= PhyCtrlSpd10; + break; + case M10_FULL: + phy_ctrl |= PhyCtrlDux | PhyCtrlSpd10; + break; + case M100_HALF: + phy_ctrl |= PhyCtrlSpd100; + break; + case M100_FULL: + phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100; + break; + } + + iowrite32(phy_ctrl, port_base + PhyCtrl); + mdelay(10); + + phy_ctrl &= ~PhyCtrlReset; + iowrite32(phy_ctrl, port_base + PhyCtrl); + mdelay(1); + + _sc92031_mii_write(port_base, MII_JAB, + PHY_16_JAB_ENB | PHY_16_PORT_ENB); + _sc92031_mii_scan(port_base); + + netif_carrier_off(dev); + netif_stop_queue(dev); +} + +static void _sc92031_reset(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + + /* disable PM */ + iowrite32(0, port_base + PMConfig); + + /* soft reset the chip */ + iowrite32(Cfg0_Reset, port_base + Config0); + mdelay(200); + + iowrite32(0, port_base + Config0); + mdelay(10); + + /* disable interrupts */ + iowrite32(0, port_base + IntrMask); + + /* clear multicast address */ + iowrite32(0, port_base + MAR0); + iowrite32(0, port_base + MAR0 + 4); + + /* init rx ring */ + iowrite32(priv->rx_ring_dma_addr, port_base + RxbufAddr); + priv->rx_ring_tail = priv->rx_ring_dma_addr; + + /* init tx ring */ + _sc92031_tx_clear(dev); + + /* clear old register values */ + priv->intr_status = 0; + atomic_set(&priv->intr_mask, 0); + priv->rx_config = 0; + priv->tx_config = 0; + priv->mc_flags = 0; + + /* configure rx buffer size */ + /* NOTE: vendor driver had dead code here to enable early tx/rx */ + iowrite32(Cfg1_Rcv64K, port_base + Config1); + + _sc92031_phy_reset(dev); + _sc92031_check_media(dev); + + /* calculate rx fifo overflow */ + priv->rx_value = 0; + + /* enable PM */ + iowrite32(priv->pm_config, port_base + PMConfig); + + /* clear intr register */ + ioread32(port_base + IntrStatus); +} + +static void _sc92031_tx_tasklet(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + + unsigned old_tx_tail; + unsigned entry; + u32 tx_status; + + old_tx_tail = priv->tx_tail; + while (priv->tx_head - priv->tx_tail > 0) { + entry = priv->tx_tail % NUM_TX_DESC; + tx_status = ioread32(port_base + TxStatus0 + entry * 4); + + if (!(tx_status & (TxStatOK | TxUnderrun | TxAborted))) + break; + + priv->tx_tail++; + + if (tx_status & TxStatOK) { + dev->stats.tx_bytes += tx_status & 0x1fff; + dev->stats.tx_packets++; + /* Note: TxCarrierLost is always asserted at 100mbps. */ + dev->stats.collisions += (tx_status >> 22) & 0xf; + } + + if (tx_status & (TxOutOfWindow | TxAborted)) { + dev->stats.tx_errors++; + + if (tx_status & TxAborted) + dev->stats.tx_aborted_errors++; + + if (tx_status & TxCarrierLost) + dev->stats.tx_carrier_errors++; + + if (tx_status & TxOutOfWindow) + dev->stats.tx_window_errors++; + } + + if (tx_status & TxUnderrun) + dev->stats.tx_fifo_errors++; + } + + if (priv->tx_tail != old_tx_tail) + if (netif_queue_stopped(dev)) + netif_wake_queue(dev); +} + +static void _sc92031_rx_tasklet_error(struct net_device *dev, + u32 rx_status, unsigned rx_size) +{ + if(rx_size > (MAX_ETH_FRAME_SIZE + 4) || rx_size < 16) { + dev->stats.rx_errors++; + dev->stats.rx_length_errors++; + } + + if (!(rx_status & RxStatesOK)) { + dev->stats.rx_errors++; + + if (rx_status & (RxHugeFrame | RxSmallFrame)) + dev->stats.rx_length_errors++; + + if (rx_status & RxBadAlign) + dev->stats.rx_frame_errors++; + + if (!(rx_status & RxCRCOK)) + dev->stats.rx_crc_errors++; + } else { + struct sc92031_priv *priv = netdev_priv(dev); + priv->rx_loss++; + } +} + +static void _sc92031_rx_tasklet(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + + dma_addr_t rx_ring_head; + unsigned rx_len; + unsigned rx_ring_offset; + void *rx_ring = priv->rx_ring; + + rx_ring_head = ioread32(port_base + RxBufWPtr); + rmb(); + + /* rx_ring_head is only 17 bits in the RxBufWPtr register. + * we need to change it to 32 bits physical address + */ + rx_ring_head &= (dma_addr_t)(RX_BUF_LEN - 1); + rx_ring_head |= priv->rx_ring_dma_addr & ~(dma_addr_t)(RX_BUF_LEN - 1); + if (rx_ring_head < priv->rx_ring_dma_addr) + rx_ring_head += RX_BUF_LEN; + + if (rx_ring_head >= priv->rx_ring_tail) + rx_len = rx_ring_head - priv->rx_ring_tail; + else + rx_len = RX_BUF_LEN - (priv->rx_ring_tail - rx_ring_head); + + if (!rx_len) + return; + + if (unlikely(rx_len > RX_BUF_LEN)) { + if (printk_ratelimit()) + printk(KERN_ERR "%s: rx packets length > rx buffer\n", + dev->name); + return; + } + + rx_ring_offset = (priv->rx_ring_tail - priv->rx_ring_dma_addr) % RX_BUF_LEN; + + while (rx_len) { + u32 rx_status; + unsigned rx_size, rx_size_align, pkt_size; + struct sk_buff *skb; + + rx_status = le32_to_cpup((__le32 *)(rx_ring + rx_ring_offset)); + rmb(); + + rx_size = rx_status >> 20; + rx_size_align = (rx_size + 3) & ~3; // for 4 bytes aligned + pkt_size = rx_size - 4; // Omit the four octet CRC from the length. + + rx_ring_offset = (rx_ring_offset + 4) % RX_BUF_LEN; + + if (unlikely(rx_status == 0 || + rx_size > (MAX_ETH_FRAME_SIZE + 4) || + rx_size < 16 || + !(rx_status & RxStatesOK))) { + _sc92031_rx_tasklet_error(dev, rx_status, rx_size); + break; + } + + if (unlikely(rx_size_align + 4 > rx_len)) { + if (printk_ratelimit()) + printk(KERN_ERR "%s: rx_len is too small\n", dev->name); + break; + } + + rx_len -= rx_size_align + 4; + + skb = netdev_alloc_skb_ip_align(dev, pkt_size); + if (unlikely(!skb)) { + if (printk_ratelimit()) + printk(KERN_ERR "%s: Couldn't allocate a skb_buff for a packet of size %u\n", + dev->name, pkt_size); + goto next; + } + + if ((rx_ring_offset + pkt_size) > RX_BUF_LEN) { + memcpy(skb_put(skb, RX_BUF_LEN - rx_ring_offset), + rx_ring + rx_ring_offset, RX_BUF_LEN - rx_ring_offset); + memcpy(skb_put(skb, pkt_size - (RX_BUF_LEN - rx_ring_offset)), + rx_ring, pkt_size - (RX_BUF_LEN - rx_ring_offset)); + } else { + memcpy(skb_put(skb, pkt_size), rx_ring + rx_ring_offset, pkt_size); + } + + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + + dev->stats.rx_bytes += pkt_size; + dev->stats.rx_packets++; + + if (rx_status & Rx_Multicast) + dev->stats.multicast++; + + next: + rx_ring_offset = (rx_ring_offset + rx_size_align) % RX_BUF_LEN; + } + mb(); + + priv->rx_ring_tail = rx_ring_head; + iowrite32(priv->rx_ring_tail, port_base + RxBufRPtr); +} + +static void _sc92031_link_tasklet(struct net_device *dev) +{ + if (_sc92031_check_media(dev)) + netif_wake_queue(dev); + else { + netif_stop_queue(dev); + dev->stats.tx_carrier_errors++; + } +} + +static void sc92031_tasklet(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + u32 intr_status, intr_mask; + + intr_status = priv->intr_status; + + spin_lock(&priv->lock); + + if (unlikely(!netif_running(dev))) + goto out; + + if (intr_status & TxOK) + _sc92031_tx_tasklet(dev); + + if (intr_status & RxOK) + _sc92031_rx_tasklet(dev); + + if (intr_status & RxOverflow) + dev->stats.rx_errors++; + + if (intr_status & TimeOut) { + dev->stats.rx_errors++; + dev->stats.rx_length_errors++; + } + + if (intr_status & (LinkFail | LinkOK)) + _sc92031_link_tasklet(dev); + +out: + intr_mask = atomic_read(&priv->intr_mask); + rmb(); + + iowrite32(intr_mask, port_base + IntrMask); + mmiowb(); + + spin_unlock(&priv->lock); +} + +static irqreturn_t sc92031_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + u32 intr_status, intr_mask; + + /* mask interrupts before clearing IntrStatus */ + iowrite32(0, port_base + IntrMask); + _sc92031_dummy_read(port_base); + + intr_status = ioread32(port_base + IntrStatus); + if (unlikely(intr_status == 0xffffffff)) + return IRQ_NONE; // hardware has gone missing + + intr_status &= IntrBits; + if (!intr_status) + goto out_none; + + priv->intr_status = intr_status; + tasklet_schedule(&priv->tasklet); + + return IRQ_HANDLED; + +out_none: + intr_mask = atomic_read(&priv->intr_mask); + rmb(); + + iowrite32(intr_mask, port_base + IntrMask); + mmiowb(); + + return IRQ_NONE; +} + +static struct net_device_stats *sc92031_get_stats(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + + // FIXME I do not understand what is this trying to do. + if (netif_running(dev)) { + int temp; + + spin_lock_bh(&priv->lock); + + /* Update the error count. */ + temp = (ioread32(port_base + RxStatus0) >> 16) & 0xffff; + + if (temp == 0xffff) { + priv->rx_value += temp; + dev->stats.rx_fifo_errors = priv->rx_value; + } else + dev->stats.rx_fifo_errors = temp + priv->rx_value; + + spin_unlock_bh(&priv->lock); + } + + return &dev->stats; +} + +static netdev_tx_t sc92031_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + unsigned len; + unsigned entry; + u32 tx_status; + + if (unlikely(skb->len > TX_BUF_SIZE)) { + dev->stats.tx_dropped++; + goto out; + } + + spin_lock(&priv->lock); + + if (unlikely(!netif_carrier_ok(dev))) { + dev->stats.tx_dropped++; + goto out_unlock; + } + + BUG_ON(priv->tx_head - priv->tx_tail >= NUM_TX_DESC); + + entry = priv->tx_head++ % NUM_TX_DESC; + + skb_copy_and_csum_dev(skb, priv->tx_bufs + entry * TX_BUF_SIZE); + + len = skb->len; + if (len < ETH_ZLEN) { + memset(priv->tx_bufs + entry * TX_BUF_SIZE + len, + 0, ETH_ZLEN - len); + len = ETH_ZLEN; + } + + wmb(); + + if (len < 100) + tx_status = len; + else if (len < 300) + tx_status = 0x30000 | len; + else + tx_status = 0x50000 | len; + + iowrite32(priv->tx_bufs_dma_addr + entry * TX_BUF_SIZE, + port_base + TxAddr0 + entry * 4); + iowrite32(tx_status, port_base + TxStatus0 + entry * 4); + mmiowb(); + + if (priv->tx_head - priv->tx_tail >= NUM_TX_DESC) + netif_stop_queue(dev); + +out_unlock: + spin_unlock(&priv->lock); + +out: + dev_kfree_skb(skb); + + return NETDEV_TX_OK; +} + +static int sc92031_open(struct net_device *dev) +{ + int err; + struct sc92031_priv *priv = netdev_priv(dev); + struct pci_dev *pdev = priv->pdev; + + priv->rx_ring = pci_alloc_consistent(pdev, RX_BUF_LEN, + &priv->rx_ring_dma_addr); + if (unlikely(!priv->rx_ring)) { + err = -ENOMEM; + goto out_alloc_rx_ring; + } + + priv->tx_bufs = pci_alloc_consistent(pdev, TX_BUF_TOT_LEN, + &priv->tx_bufs_dma_addr); + if (unlikely(!priv->tx_bufs)) { + err = -ENOMEM; + goto out_alloc_tx_bufs; + } + priv->tx_head = priv->tx_tail = 0; + + err = request_irq(pdev->irq, sc92031_interrupt, + IRQF_SHARED, dev->name, dev); + if (unlikely(err < 0)) + goto out_request_irq; + + priv->pm_config = 0; + + /* Interrupts already disabled by sc92031_stop or sc92031_probe */ + spin_lock_bh(&priv->lock); + + _sc92031_reset(dev); + mmiowb(); + + spin_unlock_bh(&priv->lock); + sc92031_enable_interrupts(dev); + + if (netif_carrier_ok(dev)) + netif_start_queue(dev); + else + netif_tx_disable(dev); + + return 0; + +out_request_irq: + pci_free_consistent(pdev, TX_BUF_TOT_LEN, priv->tx_bufs, + priv->tx_bufs_dma_addr); +out_alloc_tx_bufs: + pci_free_consistent(pdev, RX_BUF_LEN, priv->rx_ring, + priv->rx_ring_dma_addr); +out_alloc_rx_ring: + return err; +} + +static int sc92031_stop(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + struct pci_dev *pdev = priv->pdev; + + netif_tx_disable(dev); + + /* Disable interrupts, stop Tx and Rx. */ + sc92031_disable_interrupts(dev); + + spin_lock_bh(&priv->lock); + + _sc92031_disable_tx_rx(dev); + _sc92031_tx_clear(dev); + mmiowb(); + + spin_unlock_bh(&priv->lock); + + free_irq(pdev->irq, dev); + pci_free_consistent(pdev, TX_BUF_TOT_LEN, priv->tx_bufs, + priv->tx_bufs_dma_addr); + pci_free_consistent(pdev, RX_BUF_LEN, priv->rx_ring, + priv->rx_ring_dma_addr); + + return 0; +} + +static void sc92031_set_multicast_list(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + + spin_lock_bh(&priv->lock); + + _sc92031_set_mar(dev); + _sc92031_set_rx_config(dev); + mmiowb(); + + spin_unlock_bh(&priv->lock); +} + +static void sc92031_tx_timeout(struct net_device *dev) +{ + struct sc92031_priv *priv = netdev_priv(dev); + + /* Disable interrupts by clearing the interrupt mask.*/ + sc92031_disable_interrupts(dev); + + spin_lock(&priv->lock); + + priv->tx_timeouts++; + + _sc92031_reset(dev); + mmiowb(); + + spin_unlock(&priv->lock); + + /* enable interrupts */ + sc92031_enable_interrupts(dev); + + if (netif_carrier_ok(dev)) + netif_wake_queue(dev); +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void sc92031_poll_controller(struct net_device *dev) +{ + disable_irq(dev->irq); + if (sc92031_interrupt(dev->irq, dev) != IRQ_NONE) + sc92031_tasklet((unsigned long)dev); + enable_irq(dev->irq); +} +#endif + +static int sc92031_ethtool_get_settings(struct net_device *dev, + struct ethtool_cmd *cmd) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + u8 phy_address; + u32 phy_ctrl; + u16 output_status; + + spin_lock_bh(&priv->lock); + + phy_address = ioread32(port_base + Miicmd1) >> 27; + phy_ctrl = ioread32(port_base + PhyCtrl); + + output_status = _sc92031_mii_read(port_base, MII_OutputStatus); + _sc92031_mii_scan(port_base); + mmiowb(); + + spin_unlock_bh(&priv->lock); + + cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full + | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full + | SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII; + + cmd->advertising = ADVERTISED_TP | ADVERTISED_MII; + + if ((phy_ctrl & (PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10)) + == (PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10)) + cmd->advertising |= ADVERTISED_Autoneg; + + if ((phy_ctrl & PhyCtrlSpd10) == PhyCtrlSpd10) + cmd->advertising |= ADVERTISED_10baseT_Half; + + if ((phy_ctrl & (PhyCtrlSpd10 | PhyCtrlDux)) + == (PhyCtrlSpd10 | PhyCtrlDux)) + cmd->advertising |= ADVERTISED_10baseT_Full; + + if ((phy_ctrl & PhyCtrlSpd100) == PhyCtrlSpd100) + cmd->advertising |= ADVERTISED_100baseT_Half; + + if ((phy_ctrl & (PhyCtrlSpd100 | PhyCtrlDux)) + == (PhyCtrlSpd100 | PhyCtrlDux)) + cmd->advertising |= ADVERTISED_100baseT_Full; + + if (phy_ctrl & PhyCtrlAne) + cmd->advertising |= ADVERTISED_Autoneg; + + ethtool_cmd_speed_set(cmd, + (output_status & 0x2) ? SPEED_100 : SPEED_10); + cmd->duplex = (output_status & 0x4) ? DUPLEX_FULL : DUPLEX_HALF; + cmd->port = PORT_MII; + cmd->phy_address = phy_address; + cmd->transceiver = XCVR_INTERNAL; + cmd->autoneg = (phy_ctrl & PhyCtrlAne) ? AUTONEG_ENABLE : AUTONEG_DISABLE; + + return 0; +} + +static int sc92031_ethtool_set_settings(struct net_device *dev, + struct ethtool_cmd *cmd) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + u32 speed = ethtool_cmd_speed(cmd); + u32 phy_ctrl; + u32 old_phy_ctrl; + + if (!(speed == SPEED_10 || speed == SPEED_100)) + return -EINVAL; + if (!(cmd->duplex == DUPLEX_HALF || cmd->duplex == DUPLEX_FULL)) + return -EINVAL; + if (!(cmd->port == PORT_MII)) + return -EINVAL; + if (!(cmd->phy_address == 0x1f)) + return -EINVAL; + if (!(cmd->transceiver == XCVR_INTERNAL)) + return -EINVAL; + if (!(cmd->autoneg == AUTONEG_DISABLE || cmd->autoneg == AUTONEG_ENABLE)) + return -EINVAL; + + if (cmd->autoneg == AUTONEG_ENABLE) { + if (!(cmd->advertising & (ADVERTISED_Autoneg + | ADVERTISED_100baseT_Full + | ADVERTISED_100baseT_Half + | ADVERTISED_10baseT_Full + | ADVERTISED_10baseT_Half))) + return -EINVAL; + + phy_ctrl = PhyCtrlAne; + + // FIXME: I'm not sure what the original code was trying to do + if (cmd->advertising & ADVERTISED_Autoneg) + phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10; + if (cmd->advertising & ADVERTISED_100baseT_Full) + phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100; + if (cmd->advertising & ADVERTISED_100baseT_Half) + phy_ctrl |= PhyCtrlSpd100; + if (cmd->advertising & ADVERTISED_10baseT_Full) + phy_ctrl |= PhyCtrlSpd10 | PhyCtrlDux; + if (cmd->advertising & ADVERTISED_10baseT_Half) + phy_ctrl |= PhyCtrlSpd10; + } else { + // FIXME: Whole branch guessed + phy_ctrl = 0; + + if (speed == SPEED_10) + phy_ctrl |= PhyCtrlSpd10; + else /* cmd->speed == SPEED_100 */ + phy_ctrl |= PhyCtrlSpd100; + + if (cmd->duplex == DUPLEX_FULL) + phy_ctrl |= PhyCtrlDux; + } + + spin_lock_bh(&priv->lock); + + old_phy_ctrl = ioread32(port_base + PhyCtrl); + phy_ctrl |= old_phy_ctrl & ~(PhyCtrlAne | PhyCtrlDux + | PhyCtrlSpd100 | PhyCtrlSpd10); + if (phy_ctrl != old_phy_ctrl) + iowrite32(phy_ctrl, port_base + PhyCtrl); + + spin_unlock_bh(&priv->lock); + + return 0; +} + +static void sc92031_ethtool_get_wol(struct net_device *dev, + struct ethtool_wolinfo *wolinfo) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + u32 pm_config; + + spin_lock_bh(&priv->lock); + pm_config = ioread32(port_base + PMConfig); + spin_unlock_bh(&priv->lock); + + // FIXME: Guessed + wolinfo->supported = WAKE_PHY | WAKE_MAGIC + | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; + wolinfo->wolopts = 0; + + if (pm_config & PM_LinkUp) + wolinfo->wolopts |= WAKE_PHY; + + if (pm_config & PM_Magic) + wolinfo->wolopts |= WAKE_MAGIC; + + if (pm_config & PM_WakeUp) + // FIXME: Guessed + wolinfo->wolopts |= WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; +} + +static int sc92031_ethtool_set_wol(struct net_device *dev, + struct ethtool_wolinfo *wolinfo) +{ + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + u32 pm_config; + + spin_lock_bh(&priv->lock); + + pm_config = ioread32(port_base + PMConfig) + & ~(PM_LinkUp | PM_Magic | PM_WakeUp); + + if (wolinfo->wolopts & WAKE_PHY) + pm_config |= PM_LinkUp; + + if (wolinfo->wolopts & WAKE_MAGIC) + pm_config |= PM_Magic; + + // FIXME: Guessed + if (wolinfo->wolopts & (WAKE_UCAST | WAKE_MCAST | WAKE_BCAST)) + pm_config |= PM_WakeUp; + + priv->pm_config = pm_config; + iowrite32(pm_config, port_base + PMConfig); + mmiowb(); + + spin_unlock_bh(&priv->lock); + + return 0; +} + +static int sc92031_ethtool_nway_reset(struct net_device *dev) +{ + int err = 0; + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem *port_base = priv->port_base; + u16 bmcr; + + spin_lock_bh(&priv->lock); + + bmcr = _sc92031_mii_read(port_base, MII_BMCR); + if (!(bmcr & BMCR_ANENABLE)) { + err = -EINVAL; + goto out; + } + + _sc92031_mii_write(port_base, MII_BMCR, bmcr | BMCR_ANRESTART); + +out: + _sc92031_mii_scan(port_base); + mmiowb(); + + spin_unlock_bh(&priv->lock); + + return err; +} + +static const char sc92031_ethtool_stats_strings[SILAN_STATS_NUM][ETH_GSTRING_LEN] = { + "tx_timeout", + "rx_loss", +}; + +static void sc92031_ethtool_get_strings(struct net_device *dev, + u32 stringset, u8 *data) +{ + if (stringset == ETH_SS_STATS) + memcpy(data, sc92031_ethtool_stats_strings, + SILAN_STATS_NUM * ETH_GSTRING_LEN); +} + +static int sc92031_ethtool_get_sset_count(struct net_device *dev, int sset) +{ + switch (sset) { + case ETH_SS_STATS: + return SILAN_STATS_NUM; + default: + return -EOPNOTSUPP; + } +} + +static void sc92031_ethtool_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats *stats, u64 *data) +{ + struct sc92031_priv *priv = netdev_priv(dev); + + spin_lock_bh(&priv->lock); + data[0] = priv->tx_timeouts; + data[1] = priv->rx_loss; + spin_unlock_bh(&priv->lock); +} + +static const struct ethtool_ops sc92031_ethtool_ops = { + .get_settings = sc92031_ethtool_get_settings, + .set_settings = sc92031_ethtool_set_settings, + .get_wol = sc92031_ethtool_get_wol, + .set_wol = sc92031_ethtool_set_wol, + .nway_reset = sc92031_ethtool_nway_reset, + .get_link = ethtool_op_get_link, + .get_strings = sc92031_ethtool_get_strings, + .get_sset_count = sc92031_ethtool_get_sset_count, + .get_ethtool_stats = sc92031_ethtool_get_ethtool_stats, +}; + + +static const struct net_device_ops sc92031_netdev_ops = { + .ndo_get_stats = sc92031_get_stats, + .ndo_start_xmit = sc92031_start_xmit, + .ndo_open = sc92031_open, + .ndo_stop = sc92031_stop, + .ndo_set_rx_mode = sc92031_set_multicast_list, + .ndo_change_mtu = eth_change_mtu, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = eth_mac_addr, + .ndo_tx_timeout = sc92031_tx_timeout, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = sc92031_poll_controller, +#endif +}; + +static int __devinit sc92031_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + int err; + void __iomem* port_base; + struct net_device *dev; + struct sc92031_priv *priv; + u32 mac0, mac1; + unsigned long base_addr; + + err = pci_enable_device(pdev); + if (unlikely(err < 0)) + goto out_enable_device; + + pci_set_master(pdev); + + err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + if (unlikely(err < 0)) + goto out_set_dma_mask; + + err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); + if (unlikely(err < 0)) + goto out_set_dma_mask; + + err = pci_request_regions(pdev, SC92031_NAME); + if (unlikely(err < 0)) + goto out_request_regions; + + port_base = pci_iomap(pdev, SC92031_USE_BAR, 0); + if (unlikely(!port_base)) { + err = -EIO; + goto out_iomap; + } + + dev = alloc_etherdev(sizeof(struct sc92031_priv)); + if (unlikely(!dev)) { + err = -ENOMEM; + goto out_alloc_etherdev; + } + + pci_set_drvdata(pdev, dev); + SET_NETDEV_DEV(dev, &pdev->dev); + +#if SC92031_USE_BAR == 0 + dev->mem_start = pci_resource_start(pdev, SC92031_USE_BAR); + dev->mem_end = pci_resource_end(pdev, SC92031_USE_BAR); +#elif SC92031_USE_BAR == 1 + dev->base_addr = pci_resource_start(pdev, SC92031_USE_BAR); +#endif + dev->irq = pdev->irq; + + /* faked with skb_copy_and_csum_dev */ + dev->features = NETIF_F_SG | NETIF_F_HIGHDMA | + NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; + + dev->netdev_ops = &sc92031_netdev_ops; + dev->watchdog_timeo = TX_TIMEOUT; + dev->ethtool_ops = &sc92031_ethtool_ops; + + priv = netdev_priv(dev); + spin_lock_init(&priv->lock); + priv->port_base = port_base; + priv->pdev = pdev; + tasklet_init(&priv->tasklet, sc92031_tasklet, (unsigned long)dev); + /* Fudge tasklet count so the call to sc92031_enable_interrupts at + * sc92031_open will work correctly */ + tasklet_disable_nosync(&priv->tasklet); + + /* PCI PM Wakeup */ + iowrite32((~PM_LongWF & ~PM_LWPTN) | PM_Enable, port_base + PMConfig); + + mac0 = ioread32(port_base + MAC0); + mac1 = ioread32(port_base + MAC0 + 4); + dev->dev_addr[0] = dev->perm_addr[0] = mac0 >> 24; + dev->dev_addr[1] = dev->perm_addr[1] = mac0 >> 16; + dev->dev_addr[2] = dev->perm_addr[2] = mac0 >> 8; + dev->dev_addr[3] = dev->perm_addr[3] = mac0; + dev->dev_addr[4] = dev->perm_addr[4] = mac1 >> 8; + dev->dev_addr[5] = dev->perm_addr[5] = mac1; + + err = register_netdev(dev); + if (err < 0) + goto out_register_netdev; + +#if SC92031_USE_BAR == 0 + base_addr = dev->mem_start; +#elif SC92031_USE_BAR == 1 + base_addr = dev->base_addr; +#endif + printk(KERN_INFO "%s: SC92031 at 0x%lx, %pM, IRQ %d\n", dev->name, + base_addr, dev->dev_addr, dev->irq); + + return 0; + +out_register_netdev: + free_netdev(dev); +out_alloc_etherdev: + pci_iounmap(pdev, port_base); +out_iomap: + pci_release_regions(pdev); +out_request_regions: +out_set_dma_mask: + pci_disable_device(pdev); +out_enable_device: + return err; +} + +static void __devexit sc92031_remove(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct sc92031_priv *priv = netdev_priv(dev); + void __iomem* port_base = priv->port_base; + + unregister_netdev(dev); + free_netdev(dev); + pci_iounmap(pdev, port_base); + pci_release_regions(pdev); + pci_disable_device(pdev); +} + +static int sc92031_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct sc92031_priv *priv = netdev_priv(dev); + + pci_save_state(pdev); + + if (!netif_running(dev)) + goto out; + + netif_device_detach(dev); + + /* Disable interrupts, stop Tx and Rx. */ + sc92031_disable_interrupts(dev); + + spin_lock_bh(&priv->lock); + + _sc92031_disable_tx_rx(dev); + _sc92031_tx_clear(dev); + mmiowb(); + + spin_unlock_bh(&priv->lock); + +out: + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + + return 0; +} + +static int sc92031_resume(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct sc92031_priv *priv = netdev_priv(dev); + + pci_restore_state(pdev); + pci_set_power_state(pdev, PCI_D0); + + if (!netif_running(dev)) + goto out; + + /* Interrupts already disabled by sc92031_suspend */ + spin_lock_bh(&priv->lock); + + _sc92031_reset(dev); + mmiowb(); + + spin_unlock_bh(&priv->lock); + sc92031_enable_interrupts(dev); + + netif_device_attach(dev); + + if (netif_carrier_ok(dev)) + netif_wake_queue(dev); + else + netif_tx_disable(dev); + +out: + return 0; +} + +static DEFINE_PCI_DEVICE_TABLE(sc92031_pci_device_id_table) = { + { PCI_DEVICE(PCI_VENDOR_ID_SILAN, 0x2031) }, + { PCI_DEVICE(PCI_VENDOR_ID_SILAN, 0x8139) }, + { PCI_DEVICE(0x1088, 0x2031) }, + { 0, } +}; +MODULE_DEVICE_TABLE(pci, sc92031_pci_device_id_table); + +static struct pci_driver sc92031_pci_driver = { + .name = SC92031_NAME, + .id_table = sc92031_pci_device_id_table, + .probe = sc92031_probe, + .remove = __devexit_p(sc92031_remove), + .suspend = sc92031_suspend, + .resume = sc92031_resume, +}; + +static int __init sc92031_init(void) +{ + return pci_register_driver(&sc92031_pci_driver); +} + +static void __exit sc92031_exit(void) +{ + pci_unregister_driver(&sc92031_pci_driver); +} + +module_init(sc92031_init); +module_exit(sc92031_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Cesar Eduardo Barros "); +MODULE_DESCRIPTION("Silan SC92031 PCI Fast Ethernet Adapter driver");