# This is a BitKeeper generated patch for the following project: # Project Name: Linux kernel tree # This patch format is intended for GNU patch command version 2.5 or higher. # This patch includes the following deltas: # ChangeSet 1.1321 -> 1.1323 # drivers/net/Makefile 1.40.1.1 -> 1.42 # drivers/net/Config.in 1.72.1.1 -> 1.75 # Documentation/Configure.help 1.206.1.21 -> 1.210 # (new) -> 1.11 drivers/net/forcedeth.c # # The following is the BitKeeper ChangeSet Log # -------------------------------------------- # 04/02/04 compiler@4100xcdt.local 1.1322 # Merge 4100xcdt.local:/sources/linux-2.4 # into 4100xcdt.local:/sources/linux-2.4-forcedeth # -------------------------------------------- # 04/02/05 compiler@4100xcdt.local 1.1323 # update forcedeth from 0.22 to 0.23: cleanups, remove all compat macros # -------------------------------------------- # diff -Nru a/Documentation/Configure.help b/Documentation/Configure.help --- a/Documentation/Configure.help Thu Feb 5 01:11:12 2004 +++ b/Documentation/Configure.help Thu Feb 5 01:11:13 2004 @@ -12358,6 +12358,16 @@ . The module will be called b44. +nForce Ethernet support (EXPERIMENTAL) +CONFIG_FORCEDETH + If you have a network (Ethernet) controller of this type, say Y and + read the Ethernet-HOWTO, available from + . + + To compile this driver as a module, choose M here and read + . The module will be + called forcedeth.o. + CS89x0 support (Daynaport CS and LC cards) CONFIG_CS89x0 Support for CS89x0 chipset based Ethernet cards. If you have a diff -Nru a/drivers/net/Config.in b/drivers/net/Config.in --- a/drivers/net/Config.in Thu Feb 5 01:11:12 2004 +++ b/drivers/net/Config.in Thu Feb 5 01:11:12 2004 @@ -198,6 +198,7 @@ dep_tristate ' Myson MTD-8xx PCI Ethernet support' CONFIG_FEALNX $CONFIG_PCI dep_tristate ' National Semiconductor DP8381x series PCI Ethernet support' CONFIG_NATSEMI $CONFIG_PCI dep_tristate ' PCI NE2000 and clones support (see help)' CONFIG_NE2K_PCI $CONFIG_PCI + dep_tristate ' nForce Ethernet support (EXPERIMENTAL)' CONFIG_FORCEDETH $CONFIG_PCI $CONFIG_EXPERIMENTAL dep_tristate ' Novell/Eagle/Microdyne NE3210 EISA support (EXPERIMENTAL)' CONFIG_NE3210 $CONFIG_EISA $CONFIG_EXPERIMENTAL dep_tristate ' Racal-Interlan EISA ES3210 support (EXPERIMENTAL)' CONFIG_ES3210 $CONFIG_EISA $CONFIG_EXPERIMENTAL dep_tristate ' RealTek RTL-8139 C+ PCI Fast Ethernet Adapter support (EXPERIMENTAL)' CONFIG_8139CP $CONFIG_PCI $CONFIG_EXPERIMENTAL diff -Nru a/drivers/net/Makefile b/drivers/net/Makefile --- a/drivers/net/Makefile Thu Feb 5 01:11:12 2004 +++ b/drivers/net/Makefile Thu Feb 5 01:11:12 2004 @@ -154,6 +154,7 @@ obj-$(CONFIG_NE3210) += ne3210.o 8390.o obj-$(CONFIG_NET_SB1250_MAC) += sb1250-mac.o obj-$(CONFIG_B44) += b44.o +obj-$(CONFIG_FORCEDETH) += forcedeth.o obj-$(CONFIG_PPP) += ppp_generic.o slhc.o obj-$(CONFIG_PPP_ASYNC) += ppp_async.o diff -Nru a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c --- /dev/null Wed Dec 31 16:00:00 1969 +++ b/drivers/net/forcedeth.c Thu Feb 5 01:11:13 2004 @@ -0,0 +1,1576 @@ +/* + * forcedeth: Ethernet driver for NVIDIA nForce media access controllers. + * + * Note: This driver is a cleanroom reimplementation based on reverse + * engineered documentation written by Carl-Daniel Hailfinger + * and Andrew de Quincey. It's neither supported nor endorsed + * by NVIDIA Corp. Use at your own risk. + * + * NVIDIA, nForce and other NVIDIA marks are trademarks or registered + * trademarks of NVIDIA Corporation in the United States and other + * countries. + * + * Copyright (C) 2003 Manfred Spraul + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Changelog: + * 0.01: 05 Oct 2003: First release that compiles without warnings. + * 0.02: 05 Oct 2003: Fix bug for drain_tx: do not try to free NULL skbs. + * Check all PCI BARs for the register window. + * udelay added to mii_rw. + * 0.03: 06 Oct 2003: Initialize dev->irq. + * 0.04: 07 Oct 2003: Initialize np->lock, reduce handled irqs, add printks. + * 0.05: 09 Oct 2003: printk removed again, irq status print tx_timeout. + * 0.06: 10 Oct 2003: MAC Address read updated, pff flag generation updated, + * irq mask updated + * 0.07: 14 Oct 2003: Further irq mask updates. + * 0.08: 20 Oct 2003: rx_desc.Length initialization added, alloc_rx refill + * added into irq handler, NULL check for drain_ring. + * 0.09: 20 Oct 2003: Basic link speed irq implementation. Only handle the + * requested interrupt sources. + * 0.10: 20 Oct 2003: First cleanup for release. + * 0.11: 21 Oct 2003: hexdump for tx added, rx buffer sizes increased. + * MAC Address init fix, set_multicast cleanup. + * 0.12: 23 Oct 2003: Cleanups for release. + * 0.13: 25 Oct 2003: Limit for concurrent tx packets increased to 10. + * Set link speed correctly. start rx before starting + * tx (start_rx sets the link speed). + * 0.14: 25 Oct 2003: Nic dependant irq mask. + * 0.15: 08 Nov 2003: fix smp deadlock with set_multicast_list during + * open. + * 0.16: 15 Nov 2003: include file cleanup for ppc64, rx buffer size + * increased to 1628 bytes. + * 0.17: 16 Nov 2003: undo rx buffer size increase. Substract 1 from + * the tx length. + * 0.18: 17 Nov 2003: fix oops due to late initialization of dev_stats + * 0.19: 29 Nov 2003: Handle RxNoBuf, detect & handle invalid mac + * addresses, really stop rx if already running + * in start_rx, clean up a bit. + * (C) Carl-Daniel Hailfinger + * 0.20: 07 Dec 2003: alloc fixes + * 0.21: 12 Jan 2004: additional alloc fix, nic polling fix. + * 0.22: 19 Jan 2004: reprogram timer to a sane rate, avoid lockup + * on close. + * (C) Carl-Daniel Hailfinger, Manfred Spraul + * 0.23: 26 Jan 2004: various small cleanups + * + * Known bugs: + * We suspect that on some hardware no TX done interrupts are generated. + * This means recovery from netif_stop_queue only happens if the hw timer + * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT) + * and the timer is active in the IRQMask, or if a rx packet arrives by chance. + * If your hardware reliably generates tx done interrupts, then you can remove + * DEV_NEED_TIMERIRQ from the driver_data flags. + * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few + * superfluous timer interrupts from the nic. + */ +#define FORCEDETH_VERSION "0.23" + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#if 0 +#define dprintk printk +#else +#define dprintk(x...) do { } while (0) +#endif + + +/* + * Hardware access: + */ + +#define DEV_NEED_LASTPACKET1 0x0001 +#define DEV_IRQMASK_1 0x0002 +#define DEV_IRQMASK_2 0x0004 +#define DEV_NEED_TIMERIRQ 0x0008 + +enum { + NvRegIrqStatus = 0x000, +#define NVREG_IRQSTAT_MIIEVENT 0x040 +#define NVREG_IRQSTAT_MASK 0x1ff + NvRegIrqMask = 0x004, +#define NVREG_IRQ_RX 0x0002 +#define NVREG_IRQ_RX_NOBUF 0x0004 +#define NVREG_IRQ_TX_ERR 0x0008 +#define NVREG_IRQ_TX2 0x0010 +#define NVREG_IRQ_TIMER 0x0020 +#define NVREG_IRQ_LINK 0x0040 +#define NVREG_IRQ_TX1 0x0100 +#define NVREG_IRQMASK_WANTED_1 0x005f +#define NVREG_IRQMASK_WANTED_2 0x0147 +#define NVREG_IRQ_UNKNOWN (~(NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR|NVREG_IRQ_TX2|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_TX1)) + + NvRegUnknownSetupReg6 = 0x008, +#define NVREG_UNKSETUP6_VAL 3 + +/* + * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic + * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms + */ + NvRegPollingInterval = 0x00c, +#define NVREG_POLL_DEFAULT 970 + NvRegMisc1 = 0x080, +#define NVREG_MISC1_HD 0x02 +#define NVREG_MISC1_FORCE 0x3b0f3c + + NvRegTransmitterControl = 0x084, +#define NVREG_XMITCTL_START 0x01 + NvRegTransmitterStatus = 0x088, +#define NVREG_XMITSTAT_BUSY 0x01 + + NvRegPacketFilterFlags = 0x8c, +#define NVREG_PFF_ALWAYS 0x7F0008 +#define NVREG_PFF_PROMISC 0x80 +#define NVREG_PFF_MYADDR 0x20 + + NvRegOffloadConfig = 0x90, +#define NVREG_OFFLOAD_HOMEPHY 0x601 +#define NVREG_OFFLOAD_NORMAL 0x5ee + NvRegReceiverControl = 0x094, +#define NVREG_RCVCTL_START 0x01 + NvRegReceiverStatus = 0x98, +#define NVREG_RCVSTAT_BUSY 0x01 + + NvRegRandomSeed = 0x9c, +#define NVREG_RNDSEED_MASK 0x00ff +#define NVREG_RNDSEED_FORCE 0x7f00 + + NvRegUnknownSetupReg1 = 0xA0, +#define NVREG_UNKSETUP1_VAL 0x16070f + NvRegUnknownSetupReg2 = 0xA4, +#define NVREG_UNKSETUP2_VAL 0x16 + NvRegMacAddrA = 0xA8, + NvRegMacAddrB = 0xAC, + NvRegMulticastAddrA = 0xB0, +#define NVREG_MCASTADDRA_FORCE 0x01 + NvRegMulticastAddrB = 0xB4, + NvRegMulticastMaskA = 0xB8, + NvRegMulticastMaskB = 0xBC, + + NvRegTxRingPhysAddr = 0x100, + NvRegRxRingPhysAddr = 0x104, + NvRegRingSizes = 0x108, +#define NVREG_RINGSZ_TXSHIFT 0 +#define NVREG_RINGSZ_RXSHIFT 16 + NvRegUnknownTransmitterReg = 0x10c, + NvRegLinkSpeed = 0x110, +#define NVREG_LINKSPEED_FORCE 0x10000 +#define NVREG_LINKSPEED_10 10 +#define NVREG_LINKSPEED_100 100 +#define NVREG_LINKSPEED_1000 1000 + NvRegUnknownSetupReg5 = 0x130, +#define NVREG_UNKSETUP5_BIT31 (1<<31) + NvRegUnknownSetupReg3 = 0x134, +#define NVREG_UNKSETUP3_VAL1 0x200010 + NvRegTxRxControl = 0x144, +#define NVREG_TXRXCTL_KICK 0x0001 +#define NVREG_TXRXCTL_BIT1 0x0002 +#define NVREG_TXRXCTL_BIT2 0x0004 +#define NVREG_TXRXCTL_IDLE 0x0008 +#define NVREG_TXRXCTL_RESET 0x0010 + NvRegMIIStatus = 0x180, +#define NVREG_MIISTAT_ERROR 0x0001 +#define NVREG_MIISTAT_LINKCHANGE 0x0008 +#define NVREG_MIISTAT_MASK 0x000f +#define NVREG_MIISTAT_MASK2 0x000f + NvRegUnknownSetupReg4 = 0x184, +#define NVREG_UNKSETUP4_VAL 8 + + NvRegAdapterControl = 0x188, +#define NVREG_ADAPTCTL_START 0x02 +#define NVREG_ADAPTCTL_LINKUP 0x04 +#define NVREG_ADAPTCTL_PHYVALID 0x4000 +#define NVREG_ADAPTCTL_RUNNING 0x100000 +#define NVREG_ADAPTCTL_PHYSHIFT 24 + NvRegMIISpeed = 0x18c, +#define NVREG_MIISPEED_BIT8 (1<<8) +#define NVREG_MIIDELAY 5 + NvRegMIIControl = 0x190, +#define NVREG_MIICTL_INUSE 0x10000 +#define NVREG_MIICTL_WRITE 0x08000 +#define NVREG_MIICTL_ADDRSHIFT 5 + NvRegMIIData = 0x194, + NvRegWakeUpFlags = 0x200, +#define NVREG_WAKEUPFLAGS_VAL 0x7770 +#define NVREG_WAKEUPFLAGS_BUSYSHIFT 24 +#define NVREG_WAKEUPFLAGS_ENABLESHIFT 16 +#define NVREG_WAKEUPFLAGS_D3SHIFT 12 +#define NVREG_WAKEUPFLAGS_D2SHIFT 8 +#define NVREG_WAKEUPFLAGS_D1SHIFT 4 +#define NVREG_WAKEUPFLAGS_D0SHIFT 0 +#define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT 0x01 +#define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT 0x02 +#define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE 0x04 + + NvRegPatternCRC = 0x204, + NvRegPatternMask = 0x208, + NvRegPowerCap = 0x268, +#define NVREG_POWERCAP_D3SUPP (1<<30) +#define NVREG_POWERCAP_D2SUPP (1<<26) +#define NVREG_POWERCAP_D1SUPP (1<<25) + NvRegPowerState = 0x26c, +#define NVREG_POWERSTATE_POWEREDUP 0x8000 +#define NVREG_POWERSTATE_VALID 0x0100 +#define NVREG_POWERSTATE_MASK 0x0003 +#define NVREG_POWERSTATE_D0 0x0000 +#define NVREG_POWERSTATE_D1 0x0001 +#define NVREG_POWERSTATE_D2 0x0002 +#define NVREG_POWERSTATE_D3 0x0003 +}; + +struct ring_desc { + u32 PacketBuffer; + u16 Length; + u16 Flags; +}; + +#define NV_TX_LASTPACKET (1<<0) +#define NV_TX_RETRYERROR (1<<3) +#define NV_TX_LASTPACKET1 (1<<8) +#define NV_TX_DEFERRED (1<<10) +#define NV_TX_CARRIERLOST (1<<11) +#define NV_TX_LATECOLLISION (1<<12) +#define NV_TX_UNDERFLOW (1<<13) +#define NV_TX_ERROR (1<<14) +#define NV_TX_VALID (1<<15) + +#define NV_RX_DESCRIPTORVALID (1<<0) +#define NV_RX_MISSEDFRAME (1<<1) +#define NV_RX_SUBSTRACT1 (1<<3) +#define NV_RX_ERROR1 (1<<7) +#define NV_RX_ERROR2 (1<<8) +#define NV_RX_ERROR3 (1<<9) +#define NV_RX_ERROR4 (1<<10) +#define NV_RX_CRCERR (1<<11) +#define NV_RX_OVERFLOW (1<<12) +#define NV_RX_FRAMINGERR (1<<13) +#define NV_RX_ERROR (1<<14) +#define NV_RX_AVAIL (1<<15) + +/* Miscelaneous hardware related defines: */ +#define NV_PCI_REGSZ 0x270 + +/* various timeout delays: all in usec */ +#define NV_TXRX_RESET_DELAY 4 +#define NV_TXSTOP_DELAY1 10 +#define NV_TXSTOP_DELAY1MAX 500000 +#define NV_TXSTOP_DELAY2 100 +#define NV_RXSTOP_DELAY1 10 +#define NV_RXSTOP_DELAY1MAX 500000 +#define NV_RXSTOP_DELAY2 100 +#define NV_SETUP5_DELAY 5 +#define NV_SETUP5_DELAYMAX 50000 +#define NV_POWERUP_DELAY 5 +#define NV_POWERUP_DELAYMAX 5000 +#define NV_MIIBUSY_DELAY 50 +#define NV_MIIPHY_DELAY 10 +#define NV_MIIPHY_DELAYMAX 10000 + +#define NV_WAKEUPPATTERNS 5 +#define NV_WAKEUPMASKENTRIES 4 + +/* General driver defaults */ +#define NV_WATCHDOG_TIMEO (5*HZ) +#define DEFAULT_MTU 1500 /* also maximum supported, at least for now */ + +#define RX_RING 128 +#define TX_RING 16 +/* limited to 1 packet until we understand NV_TX_LASTPACKET */ +#define TX_LIMIT_STOP 10 +#define TX_LIMIT_START 5 + +/* rx/tx mac addr + type + vlan + align + slack*/ +#define RX_NIC_BUFSIZE (DEFAULT_MTU + 64) +/* even more slack */ +#define RX_ALLOC_BUFSIZE (DEFAULT_MTU + 128) + +#define OOM_REFILL (1+HZ/20) +#define POLL_WAIT (1+HZ/100) + +/* + * SMP locking: + * All hardware access under dev->priv->lock, except the performance + * critical parts: + * - rx is (pseudo-) lockless: it relies on the single-threading provided + * by the arch code for interrupts. + * - tx setup is lockless: it relies on dev->xmit_lock. Actual submission + * needs dev->priv->lock :-( + * - set_multicast_list: preparation lockless, relies on dev->xmit_lock. + */ + +/* in dev: base, irq */ +struct fe_priv { + spinlock_t lock; + + /* General data: + * Locking: spin_lock(&np->lock); */ + struct net_device_stats stats; + int in_shutdown; + u32 linkspeed; + int duplex; + int phyaddr; + + /* General data: RO fields */ + dma_addr_t ring_addr; + struct pci_dev *pci_dev; + u32 orig_mac[2]; + u32 irqmask; + + /* rx specific fields. + * Locking: Within irq hander or disable_irq+spin_lock(&np->lock); + */ + struct ring_desc *rx_ring; + unsigned int cur_rx, refill_rx; + struct sk_buff *rx_skbuff[RX_RING]; + dma_addr_t rx_dma[RX_RING]; + unsigned int rx_buf_sz; + struct timer_list oom_kick; + struct timer_list nic_poll; + + /* + * tx specific fields. + */ + struct ring_desc *tx_ring; + unsigned int next_tx, nic_tx; + struct sk_buff *tx_skbuff[TX_RING]; + dma_addr_t tx_dma[TX_RING]; + u16 tx_flags; +}; + +/* + * Maximum number of loops until we assume that a bit in the irq mask + * is stuck. Overridable with module param. + */ +static int max_interrupt_work = 5; + +static inline struct fe_priv *get_nvpriv(struct net_device *dev) +{ + return (struct fe_priv *) dev->priv; +} + +static inline u8 *get_hwbase(struct net_device *dev) +{ + return (u8 *) dev->base_addr; +} + +static inline void pci_push(u8 * base) +{ + /* force out pending posted writes */ + readl(base); +} + +static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target, + int delay, int delaymax, const char *msg) +{ + u8 *base = get_hwbase(dev); + + pci_push(base); + do { + udelay(delay); + delaymax -= delay; + if (delaymax < 0) { + if (msg) + printk(msg); + return 1; + } + } while ((readl(base + offset) & mask) != target); + return 0; +} + +#define MII_READ (-1) +/* mii_rw: read/write a register on the PHY. + * + * Caller must guarantee serialization + */ +static int mii_rw(struct net_device *dev, int addr, int miireg, int value) +{ + u8 *base = get_hwbase(dev); + int was_running; + u32 reg; + int retval; + + writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus); + was_running = 0; + reg = readl(base + NvRegAdapterControl); + if (reg & NVREG_ADAPTCTL_RUNNING) { + was_running = 1; + writel(reg & ~NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl); + } + reg = readl(base + NvRegMIIControl); + if (reg & NVREG_MIICTL_INUSE) { + writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl); + udelay(NV_MIIBUSY_DELAY); + } + + reg = NVREG_MIICTL_INUSE | (addr << NVREG_MIICTL_ADDRSHIFT) | miireg; + if (value != MII_READ) { + writel(value, base + NvRegMIIData); + reg |= NVREG_MIICTL_WRITE; + } + writel(reg, base + NvRegMIIControl); + + if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0, + NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX, NULL)) { + dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d timed out.\n", + dev->name, miireg, addr); + retval = -1; + } else if (value != MII_READ) { + /* it was a write operation - fewer failures are detectable */ + dprintk(KERN_DEBUG "%s: mii_rw wrote 0x%x to reg %d at PHY %d\n", + dev->name, value, miireg, addr); + retval = 0; + } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) { + dprintk(KERN_DEBUG "%s: mii_rw of reg %d at PHY %d failed.\n", + dev->name, miireg, addr); + retval = -1; + } else { + /* FIXME: why is that required? */ + udelay(50); + retval = readl(base + NvRegMIIData); + dprintk(KERN_DEBUG "%s: mii_rw read from reg %d at PHY %d: 0x%x.\n", + dev->name, miireg, addr, retval); + } + if (was_running) { + reg = readl(base + NvRegAdapterControl); + writel(reg | NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl); + } + return retval; +} + +static void start_rx(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + u8 *base = get_hwbase(dev); + + dprintk(KERN_DEBUG "%s: start_rx\n", dev->name); + /* Already running? Stop it. */ + if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) { + writel(0, base + NvRegReceiverControl); + pci_push(base); + } + writel(np->linkspeed, base + NvRegLinkSpeed); + pci_push(base); + writel(NVREG_RCVCTL_START, base + NvRegReceiverControl); + pci_push(base); +} + +static void stop_rx(struct net_device *dev) +{ + u8 *base = get_hwbase(dev); + + dprintk(KERN_DEBUG "%s: stop_rx\n", dev->name); + writel(0, base + NvRegReceiverControl); + reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0, + NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX, + KERN_INFO "stop_rx: ReceiverStatus remained busy"); + + udelay(NV_RXSTOP_DELAY2); + writel(0, base + NvRegLinkSpeed); +} + +static void start_tx(struct net_device *dev) +{ + u8 *base = get_hwbase(dev); + + dprintk(KERN_DEBUG "%s: start_tx\n", dev->name); + writel(NVREG_XMITCTL_START, base + NvRegTransmitterControl); + pci_push(base); +} + +static void stop_tx(struct net_device *dev) +{ + u8 *base = get_hwbase(dev); + + dprintk(KERN_DEBUG "%s: stop_tx\n", dev->name); + writel(0, base + NvRegTransmitterControl); + reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0, + NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX, + KERN_INFO "stop_tx: TransmitterStatus remained busy"); + + udelay(NV_TXSTOP_DELAY2); + writel(0, base + NvRegUnknownTransmitterReg); +} + +static void txrx_reset(struct net_device *dev) +{ + u8 *base = get_hwbase(dev); + + dprintk(KERN_DEBUG "%s: txrx_reset\n", dev->name); + writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET, base + NvRegTxRxControl); + pci_push(base); + udelay(NV_TXRX_RESET_DELAY); + writel(NVREG_TXRXCTL_BIT2, base + NvRegTxRxControl); + pci_push(base); +} + +/* + * nv_get_stats: dev->get_stats function + * Get latest stats value from the nic. + * Called with read_lock(&dev_base_lock) held for read - + * only synchronized against unregister_netdevice. + */ +static struct net_device_stats *nv_get_stats(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + + /* It seems that the nic always generates interrupts and doesn't + * accumulate errors internally. Thus the current values in np->stats + * are already up to date. + */ + return &np->stats; +} + +static int nv_ethtool_ioctl (struct net_device *dev, void *useraddr) +{ + struct fe_priv *np = get_nvpriv(dev); + u32 ethcmd; + + if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd))) + return -EFAULT; + + switch (ethcmd) { + case ETHTOOL_GDRVINFO: + { + struct ethtool_drvinfo info = { ETHTOOL_GDRVINFO }; + strcpy(info.driver, "forcedeth"); + strcpy(info.version, FORCEDETH_VERSION); + strcpy(info.bus_info, pci_name(np->pci_dev)); + if (copy_to_user(useraddr, &info, sizeof (info))) + return -EFAULT; + return 0; + } + case ETHTOOL_GLINK: + { + struct ethtool_value edata = { ETHTOOL_GLINK }; + + edata.data = !!netif_carrier_ok(dev); + + if (copy_to_user(useraddr, &edata, sizeof(edata))) + return -EFAULT; + return 0; + } + + default: + break; + } + + return -EOPNOTSUPP; +} +/* + * nv_ioctl: dev->do_ioctl function + * Called with rtnl_lock held. + */ +static int nv_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + switch(cmd) { + case SIOCETHTOOL: + return nv_ethtool_ioctl(dev, (void *) rq->ifr_data); + + default: + return -EOPNOTSUPP; + } +} + +/* + * alloc_rx: fill rx ring entries. + * Return 1 if the allocations for the skbs failed and the + * rx engine is without Available descriptors + */ +static int alloc_rx(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + unsigned int refill_rx = np->refill_rx; + + while (np->cur_rx != refill_rx) { + int nr = refill_rx % RX_RING; + struct sk_buff *skb; + + if (np->rx_skbuff[nr] == NULL) { + + skb = dev_alloc_skb(RX_ALLOC_BUFSIZE); + if (!skb) + break; + + skb->dev = dev; + np->rx_skbuff[nr] = skb; + } else { + skb = np->rx_skbuff[nr]; + } + np->rx_dma[nr] = pci_map_single(np->pci_dev, skb->data, skb->len, + PCI_DMA_FROMDEVICE); + np->rx_ring[nr].PacketBuffer = cpu_to_le32(np->rx_dma[nr]); + np->rx_ring[nr].Length = cpu_to_le16(RX_NIC_BUFSIZE); + wmb(); + np->rx_ring[nr].Flags = cpu_to_le16(NV_RX_AVAIL); + dprintk(KERN_DEBUG "%s: alloc_rx: Packet %d marked as Available\n", + dev->name, refill_rx); + refill_rx++; + } + np->refill_rx = refill_rx; + if (np->cur_rx - refill_rx == RX_RING) + return 1; + return 0; +} + +static void do_rx_refill(unsigned long data) +{ + struct net_device *dev = (struct net_device *) data; + struct fe_priv *np = get_nvpriv(dev); + + disable_irq(dev->irq); + if (alloc_rx(dev)) { + spin_lock(&np->lock); + if (!np->in_shutdown) + mod_timer(&np->oom_kick, jiffies + OOM_REFILL); + spin_unlock(&np->lock); + } + enable_irq(dev->irq); +} + +static int init_ring(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + int i; + + np->next_tx = np->nic_tx = 0; + for (i = 0; i < TX_RING; i++) { + np->tx_ring[i].Flags = 0; + } + + np->cur_rx = RX_RING; + np->refill_rx = 0; + for (i = 0; i < RX_RING; i++) { + np->rx_ring[i].Flags = 0; + } + return alloc_rx(dev); +} + +static void drain_tx(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + int i; + for (i = 0; i < TX_RING; i++) { + np->tx_ring[i].Flags = 0; + if (np->tx_skbuff[i]) { + pci_unmap_single(np->pci_dev, np->tx_dma[i], + np->tx_skbuff[i]->len, + PCI_DMA_TODEVICE); + dev_kfree_skb(np->tx_skbuff[i]); + np->tx_skbuff[i] = NULL; + np->stats.tx_dropped++; + } + } +} + +static void drain_rx(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + int i; + for (i = 0; i < RX_RING; i++) { + np->rx_ring[i].Flags = 0; + wmb(); + if (np->rx_skbuff[i]) { + pci_unmap_single(np->pci_dev, np->rx_dma[i], + np->rx_skbuff[i]->len, + PCI_DMA_FROMDEVICE); + dev_kfree_skb(np->rx_skbuff[i]); + np->rx_skbuff[i] = NULL; + } + } +} + +static void drain_ring(struct net_device *dev) +{ + drain_tx(dev); + drain_rx(dev); +} + +/* + * nv_start_xmit: dev->hard_start_xmit function + * Called with dev->xmit_lock held. + */ +static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + int nr = np->next_tx % TX_RING; + + np->tx_skbuff[nr] = skb; + np->tx_dma[nr] = pci_map_single(np->pci_dev, skb->data,skb->len, + PCI_DMA_TODEVICE); + + np->tx_ring[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]); + np->tx_ring[nr].Length = cpu_to_le16(skb->len-1); + + spin_lock_irq(&np->lock); + wmb(); + np->tx_ring[nr].Flags = np->tx_flags; + dprintk(KERN_DEBUG "%s: nv_start_xmit: packet packet %d queued for transmission.\n", + dev->name, np->next_tx); + { + int j; + for (j=0; j<64; j++) { + if ((j%16) == 0) + dprintk("\n%03x:", j); + dprintk(" %02x", ((unsigned char*)skb->data)[j]); + } + dprintk("\n"); + } + + np->next_tx++; + + dev->trans_start = jiffies; + if (np->next_tx - np->nic_tx >= TX_LIMIT_STOP) + netif_stop_queue(dev); + spin_unlock_irq(&np->lock); + writel(NVREG_TXRXCTL_KICK, get_hwbase(dev) + NvRegTxRxControl); + pci_push(get_hwbase(dev)); + return 0; +} + +/* + * tx_done: check for completed packets, release the skbs. + * + * Caller must own np->lock. + */ +static void tx_done(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + + while (np->nic_tx < np->next_tx) { + struct ring_desc *prd; + int i = np->nic_tx % TX_RING; + + prd = &np->tx_ring[i]; + + dprintk(KERN_DEBUG "%s: tx_done: looking at packet %d, Flags 0x%x.\n", + dev->name, np->nic_tx, prd->Flags); + if (prd->Flags & cpu_to_le16(NV_TX_VALID)) + break; + if (prd->Flags & cpu_to_le16(NV_TX_RETRYERROR|NV_TX_CARRIERLOST|NV_TX_LATECOLLISION| + NV_TX_UNDERFLOW|NV_TX_ERROR)) { + if (prd->Flags & cpu_to_le16(NV_TX_UNDERFLOW)) + np->stats.tx_fifo_errors++; + if (prd->Flags & cpu_to_le16(NV_TX_CARRIERLOST)) + np->stats.tx_carrier_errors++; + np->stats.tx_errors++; + } else { + np->stats.tx_packets++; + np->stats.tx_bytes += np->tx_skbuff[i]->len; + } + pci_unmap_single(np->pci_dev, np->tx_dma[i], + np->tx_skbuff[i]->len, + PCI_DMA_TODEVICE); + dev_kfree_skb_irq(np->tx_skbuff[i]); + np->tx_skbuff[i] = NULL; + np->nic_tx++; + } + if (np->next_tx - np->nic_tx < TX_LIMIT_START) + netif_wake_queue(dev); +} + +/* + * nv_tx_timeout: dev->tx_timeout function + * Called with dev->xmit_lock held. + */ +static void nv_tx_timeout(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + u8 *base = get_hwbase(dev); + + dprintk(KERN_DEBUG "%s: Got tx_timeout. irq: %08x\n", dev->name, + readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK); + + spin_lock_irq(&np->lock); + + /* 1) stop tx engine */ + stop_tx(dev); + + /* 2) check that the packets were not sent already: */ + tx_done(dev); + + /* 3) if there are dead entries: clear everything */ + if (np->next_tx != np->nic_tx) { + printk(KERN_DEBUG "%s: tx_timeout: dead entries!\n", dev->name); + drain_tx(dev); + np->next_tx = np->nic_tx = 0; + writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr); + netif_wake_queue(dev); + } + + /* 4) restart tx engine */ + start_tx(dev); + spin_unlock_irq(&np->lock); +} + +static void rx_process(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + + for (;;) { + struct ring_desc *prd; + struct sk_buff *skb; + int len; + int i; + if (np->cur_rx - np->refill_rx >= RX_RING) + break; /* we scanned the whole ring - do not continue */ + + i = np->cur_rx % RX_RING; + prd = &np->rx_ring[i]; + dprintk(KERN_DEBUG "%s: rx_process: looking at packet %d, Flags 0x%x.\n", + dev->name, np->cur_rx, prd->Flags); + + if (prd->Flags & cpu_to_le16(NV_RX_AVAIL)) + break; /* still owned by hardware, */ + + /* + * the packet is for us - immediately tear down the pci mapping. + * TODO: check if a prefetch of the first cacheline improves + * the performance. + */ + pci_unmap_single(np->pci_dev, np->rx_dma[i], + np->rx_skbuff[i]->len, + PCI_DMA_FROMDEVICE); + + { + int j; + dprintk(KERN_DEBUG "Dumping packet (flags 0x%x).",prd->Flags); + for (j=0; j<64; j++) { + if ((j%16) == 0) + dprintk("\n%03x:", j); + dprintk(" %02x", ((unsigned char*)np->rx_skbuff[i]->data)[j]); + } + dprintk("\n"); + } + /* look at what we actually got: */ + if (!(prd->Flags & cpu_to_le16(NV_RX_DESCRIPTORVALID))) + goto next_pkt; + + + len = le16_to_cpu(prd->Length); + + if (prd->Flags & cpu_to_le16(NV_RX_MISSEDFRAME)) { + np->stats.rx_missed_errors++; + np->stats.rx_errors++; + goto next_pkt; + } + if (prd->Flags & cpu_to_le16(NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3|NV_RX_ERROR4)) { + np->stats.rx_errors++; + goto next_pkt; + } + if (prd->Flags & cpu_to_le16(NV_RX_CRCERR)) { + np->stats.rx_crc_errors++; + np->stats.rx_errors++; + goto next_pkt; + } + if (prd->Flags & cpu_to_le16(NV_RX_OVERFLOW)) { + np->stats.rx_over_errors++; + np->stats.rx_errors++; + goto next_pkt; + } + if (prd->Flags & cpu_to_le16(NV_RX_ERROR)) { + /* framing errors are soft errors, the rest is fatal. */ + if (prd->Flags & cpu_to_le16(NV_RX_FRAMINGERR)) { + if (prd->Flags & cpu_to_le16(NV_RX_SUBSTRACT1)) { + len--; + } + } else { + np->stats.rx_errors++; + goto next_pkt; + } + } + /* got a valid packet - forward it to the network core */ + skb = np->rx_skbuff[i]; + np->rx_skbuff[i] = NULL; + + skb_put(skb, len); + skb->protocol = eth_type_trans(skb, dev); + dprintk(KERN_DEBUG "%s: rx_process: packet %d with %d bytes, proto %d accepted.\n", + dev->name, np->cur_rx, len, skb->protocol); + netif_rx(skb); + dev->last_rx = jiffies; + np->stats.rx_packets++; + np->stats.rx_bytes += len; +next_pkt: + np->cur_rx++; + } +} + +/* + * nv_change_mtu: dev->change_mtu function + * Called with dev_base_lock held for read. + */ +static int nv_change_mtu(struct net_device *dev, int new_mtu) +{ + if (new_mtu > DEFAULT_MTU) + return -EINVAL; + dev->mtu = new_mtu; + return 0; +} + +/* + * nv_set_multicast: dev->set_multicast function + * Called with dev->xmit_lock held. + */ +static void nv_set_multicast(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + u8 *base = get_hwbase(dev); + u32 addr[2]; + u32 mask[2]; + u32 pff; + + memset(addr, 0, sizeof(addr)); + memset(mask, 0, sizeof(mask)); + + if (dev->flags & IFF_PROMISC) { + printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); + pff = NVREG_PFF_PROMISC; + } else { + pff = NVREG_PFF_MYADDR; + + if (dev->flags & IFF_ALLMULTI || dev->mc_list) { + u32 alwaysOff[2]; + u32 alwaysOn[2]; + + alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff; + if (dev->flags & IFF_ALLMULTI) { + alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0; + } else { + struct dev_mc_list *walk; + + walk = dev->mc_list; + while (walk != NULL) { + u32 a, b; + a = le32_to_cpu(*(u32 *) walk->dmi_addr); + b = le16_to_cpu(*(u16 *) (&walk->dmi_addr[4])); + alwaysOn[0] &= a; + alwaysOff[0] &= ~a; + alwaysOn[1] &= b; + alwaysOff[1] &= ~b; + walk = walk->next; + } + } + addr[0] = alwaysOn[0]; + addr[1] = alwaysOn[1]; + mask[0] = alwaysOn[0] | alwaysOff[0]; + mask[1] = alwaysOn[1] | alwaysOff[1]; + } + } + addr[0] |= NVREG_MCASTADDRA_FORCE; + pff |= NVREG_PFF_ALWAYS; + spin_lock_irq(&np->lock); + stop_rx(dev); + writel(addr[0], base + NvRegMulticastAddrA); + writel(addr[1], base + NvRegMulticastAddrB); + writel(mask[0], base + NvRegMulticastMaskA); + writel(mask[1], base + NvRegMulticastMaskB); + writel(pff, base + NvRegPacketFilterFlags); + start_rx(dev); + spin_unlock_irq(&np->lock); +} + +static int update_linkspeed(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + int adv, lpa, newls, newdup; + + adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ); + lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ); + dprintk(KERN_DEBUG "%s: update_linkspeed: PHY advertises 0x%04x, lpa 0x%04x.\n", + dev->name, adv, lpa); + + /* FIXME: handle parallel detection properly, handle gigabit ethernet */ + lpa = lpa & adv; + if (lpa & LPA_100FULL) { + newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100; + newdup = 1; + } else if (lpa & LPA_100HALF) { + newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100; + newdup = 0; + } else if (lpa & LPA_10FULL) { + newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10; + newdup = 1; + } else if (lpa & LPA_10HALF) { + newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10; + newdup = 0; + } else { + dprintk(KERN_DEBUG "%s: bad ability %04x - falling back to 10HD.\n", dev->name, lpa); + newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10; + newdup = 0; + } + if (np->duplex != newdup || np->linkspeed != newls) { + np->duplex = newdup; + np->linkspeed = newls; + return 1; + } + return 0; +} + +static void link_irq(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + u8 *base = get_hwbase(dev); + u32 miistat; + int miival; + + miistat = readl(base + NvRegMIIStatus); + writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus); + printk(KERN_DEBUG "%s: link change notification, status 0x%x.\n", dev->name, miistat); + + miival = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ); + if (miival & BMSR_ANEGCOMPLETE) { + update_linkspeed(dev); + + if (netif_carrier_ok(dev)) { + stop_rx(dev); + } else { + netif_carrier_on(dev); + printk(KERN_INFO "%s: link up.\n", dev->name); + } + writel(NVREG_MISC1_FORCE | ( np->duplex ? 0 : NVREG_MISC1_HD), + base + NvRegMisc1); + start_rx(dev); + } else { + if (netif_carrier_ok(dev)) { + netif_carrier_off(dev); + printk(KERN_INFO "%s: link down.\n", dev->name); + stop_rx(dev); + } + writel(np->linkspeed, base + NvRegLinkSpeed); + pci_push(base); + } +} + +static irqreturn_t nic_irq(int foo, void *data, struct pt_regs *regs) +{ + struct net_device *dev = (struct net_device *) data; + struct fe_priv *np = get_nvpriv(dev); + u8 *base = get_hwbase(dev); + u32 events; + int i; + + dprintk(KERN_DEBUG "%s: nic_irq\n", dev->name); + + for (i=0; ; i++) { + events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK; + writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus); + pci_push(base); + dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events); + if (!(events & np->irqmask)) + break; + + if (events & (NVREG_IRQ_TX1|NVREG_IRQ_TX2|NVREG_IRQ_TX_ERR)) { + spin_lock(&np->lock); + tx_done(dev); + spin_unlock(&np->lock); + } + + if (events & (NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF)) { + rx_process(dev); + if (alloc_rx(dev)) { + spin_lock(&np->lock); + if (!np->in_shutdown) + mod_timer(&np->oom_kick, jiffies + OOM_REFILL); + spin_unlock(&np->lock); + } + } + + if (events & NVREG_IRQ_LINK) { + spin_lock(&np->lock); + link_irq(dev); + spin_unlock(&np->lock); + } + if (events & (NVREG_IRQ_TX_ERR)) { + dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n", + dev->name, events); + } + if (events & (NVREG_IRQ_UNKNOWN)) { + printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n", + dev->name, events); + } + if (i > max_interrupt_work) { + spin_lock(&np->lock); + /* disable interrupts on the nic */ + writel(0, base + NvRegIrqMask); + pci_push(base); + + if (!np->in_shutdown) + mod_timer(&np->nic_poll, jiffies + POLL_WAIT); + printk(KERN_DEBUG "%s: too many iterations (%d) in nic_irq.\n", dev->name, i); + spin_unlock(&np->lock); + break; + } + + } + dprintk(KERN_DEBUG "%s: nic_irq completed\n", dev->name); + + return IRQ_RETVAL(i); +} + +static void do_nic_poll(unsigned long data) +{ + struct net_device *dev = (struct net_device *) data; + struct fe_priv *np = get_nvpriv(dev); + u8 *base = get_hwbase(dev); + + disable_irq(dev->irq); + /* + * reenable interrupts on the nic, we have to do this before calling + * nic_irq because that may decide to do otherwise + */ + writel(np->irqmask, base + NvRegIrqMask); + pci_push(base); + nic_irq((int) 0, (void *) data, (struct pt_regs *) NULL); + enable_irq(dev->irq); +} + +static int nv_open(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + u8 *base = get_hwbase(dev); + int ret, oom, i; + + dprintk(KERN_DEBUG "nv_open: begin\n"); + + /* 1) erase previous misconfiguration */ + /* 4.1-1: stop adapter: ignored, 4.3 seems to be overkill */ + writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA); + writel(0, base + NvRegMulticastAddrB); + writel(0, base + NvRegMulticastMaskA); + writel(0, base + NvRegMulticastMaskB); + writel(0, base + NvRegPacketFilterFlags); + writel(0, base + NvRegAdapterControl); + writel(0, base + NvRegLinkSpeed); + writel(0, base + NvRegUnknownTransmitterReg); + txrx_reset(dev); + writel(0, base + NvRegUnknownSetupReg6); + + /* 2) initialize descriptor rings */ + np->in_shutdown = 0; + oom = init_ring(dev); + + /* 3) set mac address */ + { + u32 mac[2]; + + mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) + + (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24); + mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8); + + writel(mac[0], base + NvRegMacAddrA); + writel(mac[1], base + NvRegMacAddrB); + } + + /* 4) continue setup */ + np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10; + np->duplex = 0; + writel(NVREG_UNKSETUP3_VAL1, base + NvRegUnknownSetupReg3); + writel(0, base + NvRegTxRxControl); + pci_push(base); + writel(NVREG_TXRXCTL_BIT1, base + NvRegTxRxControl); + reg_delay(dev, NvRegUnknownSetupReg5, NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31, + NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX, + KERN_INFO "open: SetupReg5, Bit 31 remained off\n"); + writel(0, base + NvRegUnknownSetupReg4); + + /* 5) Find a suitable PHY */ + writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed); + for (i = 1; i < 32; i++) { + int id1, id2; + + spin_lock_irq(&np->lock); + id1 = mii_rw(dev, i, MII_PHYSID1, MII_READ); + spin_unlock_irq(&np->lock); + if (id1 < 0 || id1 == 0xffff) + continue; + spin_lock_irq(&np->lock); + id2 = mii_rw(dev, i, MII_PHYSID2, MII_READ); + spin_unlock_irq(&np->lock); + if (id2 < 0 || id2 == 0xffff) + continue; + dprintk(KERN_DEBUG "%s: open: Found PHY %04x:%04x at address %d.\n", + dev->name, id1, id2, i); + np->phyaddr = i; + + spin_lock_irq(&np->lock); + update_linkspeed(dev); + spin_unlock_irq(&np->lock); + + break; + } + if (i == 32) { + printk(KERN_INFO "%s: open: failing due to lack of suitable PHY.\n", + dev->name); + ret = -EINVAL; + goto out_drain; + } + + /* 6) continue setup */ + writel(NVREG_MISC1_FORCE | ( np->duplex ? 0 : NVREG_MISC1_HD), + base + NvRegMisc1); + writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus); + writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags); + writel(NVREG_OFFLOAD_NORMAL, base + NvRegOffloadConfig); + + writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus); + get_random_bytes(&i, sizeof(i)); + writel(NVREG_RNDSEED_FORCE | (i&NVREG_RNDSEED_MASK), base + NvRegRandomSeed); + writel(NVREG_UNKSETUP1_VAL, base + NvRegUnknownSetupReg1); + writel(NVREG_UNKSETUP2_VAL, base + NvRegUnknownSetupReg2); + writel(NVREG_POLL_DEFAULT, base + NvRegPollingInterval); + writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6); + writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID, + base + NvRegAdapterControl); + writel(NVREG_UNKSETUP4_VAL, base + NvRegUnknownSetupReg4); + writel(NVREG_WAKEUPFLAGS_VAL, base + NvRegWakeUpFlags); + + /* 7) start packet processing */ + writel((u32) np->ring_addr, base + NvRegRxRingPhysAddr); + writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr); + writel( ((RX_RING-1) << NVREG_RINGSZ_RXSHIFT) + ((TX_RING-1) << NVREG_RINGSZ_TXSHIFT), + base + NvRegRingSizes); + + i = readl(base + NvRegPowerState); + if ( (i & NVREG_POWERSTATE_POWEREDUP) == 0) + writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState); + + pci_push(base); + udelay(10); + writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState); + writel(NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl); + + + writel(0, base + NvRegIrqMask); + pci_push(base); + writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus); + pci_push(base); + writel(NVREG_MIISTAT_MASK2, base + NvRegMIIStatus); + writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus); + pci_push(base); + + ret = request_irq(dev->irq, &nic_irq, SA_SHIRQ, dev->name, dev); + if (ret) + goto out_drain; + + writel(np->irqmask, base + NvRegIrqMask); + + spin_lock_irq(&np->lock); + writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA); + writel(0, base + NvRegMulticastAddrB); + writel(0, base + NvRegMulticastMaskA); + writel(0, base + NvRegMulticastMaskB); + writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags); + start_rx(dev); + start_tx(dev); + netif_start_queue(dev); + if (oom) + mod_timer(&np->oom_kick, jiffies + OOM_REFILL); + if (mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ) & BMSR_ANEGCOMPLETE) { + netif_carrier_on(dev); + } else { + printk("%s: no link during initialization.\n", dev->name); + netif_carrier_off(dev); + } + + spin_unlock_irq(&np->lock); + + return 0; +out_drain: + drain_ring(dev); + return ret; +} + +static int nv_close(struct net_device *dev) +{ + struct fe_priv *np = get_nvpriv(dev); + u8 *base; + + spin_lock_irq(&np->lock); + np->in_shutdown = 1; + spin_unlock_irq(&np->lock); + synchronize_irq(); + + del_timer_sync(&np->oom_kick); + del_timer_sync(&np->nic_poll); + + netif_stop_queue(dev); + spin_lock_irq(&np->lock); + stop_tx(dev); + stop_rx(dev); + base = get_hwbase(dev); + + /* disable interrupts on the nic or we will lock up */ + writel(0, base + NvRegIrqMask); + pci_push(base); + dprintk(KERN_INFO "%s: Irqmask is zero again\n", dev->name); + + spin_unlock_irq(&np->lock); + + free_irq(dev->irq, dev); + + drain_ring(dev); + + /* FIXME: power down nic */ + + return 0; +} + +static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id) +{ + struct net_device *dev; + struct fe_priv *np; + unsigned long addr; + u8 *base; + int err, i; + + dev = alloc_etherdev(sizeof(struct fe_priv)); + err = -ENOMEM; + if (!dev) + goto out; + + np = get_nvpriv(dev); + np->pci_dev = pci_dev; + spin_lock_init(&np->lock); + SET_MODULE_OWNER(dev); + SET_NETDEV_DEV(dev, &pci_dev->dev); + + init_timer(&np->oom_kick); + np->oom_kick.data = (unsigned long) dev; + np->oom_kick.function = &do_rx_refill; /* timer handler */ + init_timer(&np->nic_poll); + np->nic_poll.data = (unsigned long) dev; + np->nic_poll.function = &do_nic_poll; /* timer handler */ + + err = pci_enable_device(pci_dev); + if (err) { + printk(KERN_INFO "forcedeth: pci_enable_dev failed (%d) for device %s\n", + err, pci_name(pci_dev)); + goto out_free; + } + + pci_set_master(pci_dev); + + err = pci_request_regions(pci_dev, dev->name); + if (err < 0) + goto out_disable; + + err = -EINVAL; + addr = 0; + for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { + dprintk(KERN_DEBUG "%s: resource %d start %p len %ld flags 0x%08lx.\n", + pci_name(pci_dev), i, (void*)pci_resource_start(pci_dev, i), + pci_resource_len(pci_dev, i), + pci_resource_flags(pci_dev, i)); + if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM && + pci_resource_len(pci_dev, i) >= NV_PCI_REGSZ) { + addr = pci_resource_start(pci_dev, i); + break; + } + } + if (i == DEVICE_COUNT_RESOURCE) { + printk(KERN_INFO "forcedeth: Couldn't find register window for device %s.\n", + pci_name(pci_dev)); + goto out_relreg; + } + + err = -ENOMEM; + dev->base_addr = (unsigned long) ioremap(addr, NV_PCI_REGSZ); + if (!dev->base_addr) + goto out_relreg; + dev->irq = pci_dev->irq; + np->rx_ring = pci_alloc_consistent(pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING), + &np->ring_addr); + if (!np->rx_ring) + goto out_unmap; + np->tx_ring = &np->rx_ring[RX_RING]; + + dev->open = nv_open; + dev->stop = nv_close; + dev->hard_start_xmit = nv_start_xmit; + dev->get_stats = nv_get_stats; + dev->change_mtu = nv_change_mtu; + dev->set_multicast_list = nv_set_multicast; + dev->do_ioctl = nv_ioctl; + dev->tx_timeout = nv_tx_timeout; + dev->watchdog_timeo = NV_WATCHDOG_TIMEO; + + pci_set_drvdata(pci_dev, dev); + + /* read the mac address */ + base = get_hwbase(dev); + np->orig_mac[0] = readl(base + NvRegMacAddrA); + np->orig_mac[1] = readl(base + NvRegMacAddrB); + + dev->dev_addr[0] = (np->orig_mac[1] >> 8) & 0xff; + dev->dev_addr[1] = (np->orig_mac[1] >> 0) & 0xff; + dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff; + dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff; + dev->dev_addr[4] = (np->orig_mac[0] >> 8) & 0xff; + dev->dev_addr[5] = (np->orig_mac[0] >> 0) & 0xff; + + if (!is_valid_ether_addr(dev->dev_addr)) { + /* + * Bad mac address. At least one bios sets the mac address + * to 01:23:45:67:89:ab + */ + printk(KERN_ERR "%s: Invalid Mac address detected: %02x:%02x:%02x:%02x:%02x:%02x\n", + pci_name(pci_dev), + dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2], + dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]); + printk(KERN_ERR "Please complain to your hardware vendor. Switching to a random MAC.\n"); + dev->dev_addr[0] = 0x00; + dev->dev_addr[1] = 0x00; + dev->dev_addr[2] = 0x6c; + get_random_bytes(&dev->dev_addr[3], 3); + } + + dprintk(KERN_DEBUG "%s: MAC Address %02x:%02x:%02x:%02x:%02x:%02x\n", pci_name(pci_dev), + dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2], + dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]); + + np->tx_flags = cpu_to_le16(NV_TX_LASTPACKET|NV_TX_LASTPACKET1|NV_TX_VALID); + if (id->driver_data & DEV_NEED_LASTPACKET1) + np->tx_flags |= cpu_to_le16(NV_TX_LASTPACKET1); + if (id->driver_data & DEV_IRQMASK_1) + np->irqmask = NVREG_IRQMASK_WANTED_1; + if (id->driver_data & DEV_IRQMASK_2) + np->irqmask = NVREG_IRQMASK_WANTED_2; + if (id->driver_data & DEV_NEED_TIMERIRQ) + np->irqmask |= NVREG_IRQ_TIMER; + + err = register_netdev(dev); + if (err) { + printk(KERN_INFO "forcedeth: unable to register netdev: %d\n", err); + goto out_freering; + } + printk(KERN_INFO "%s: forcedeth.c: subsystem: %05x:%04x bound to %s\n", + dev->name, pci_dev->subsystem_vendor, pci_dev->subsystem_device, + pci_name(pci_dev)); + + return 0; + +out_freering: + pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING), + np->rx_ring, np->ring_addr); + pci_set_drvdata(pci_dev, NULL); +out_unmap: + iounmap(get_hwbase(dev)); +out_relreg: + pci_release_regions(pci_dev); +out_disable: + pci_disable_device(pci_dev); +out_free: + free_netdev(dev); +out: + return err; +} + +static void __devexit nv_remove(struct pci_dev *pci_dev) +{ + struct net_device *dev = pci_get_drvdata(pci_dev); + struct fe_priv *np = get_nvpriv(dev); + u8 *base = get_hwbase(dev); + + unregister_netdev(dev); + + /* special op: write back the misordered MAC address - otherwise + * the next nv_probe would see a wrong address. + */ + writel(np->orig_mac[0], base + NvRegMacAddrA); + writel(np->orig_mac[1], base + NvRegMacAddrB); + + /* free all structures */ + pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING), np->rx_ring, np->ring_addr); + iounmap(get_hwbase(dev)); + pci_release_regions(pci_dev); + pci_disable_device(pci_dev); + free_netdev(dev); + pci_set_drvdata(pci_dev, NULL); +} + +static struct pci_device_id pci_tbl[] = { + { /* nForce Ethernet Controller */ + .vendor = PCI_VENDOR_ID_NVIDIA, + .device = 0x1C3, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = DEV_IRQMASK_1|DEV_NEED_TIMERIRQ, + }, + { /* nForce2 Ethernet Controller */ + .vendor = PCI_VENDOR_ID_NVIDIA, + .device = 0x0066, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ, + }, + { /* nForce3 Ethernet Controller */ + .vendor = PCI_VENDOR_ID_NVIDIA, + .device = 0x00D6, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ, + }, + {0,}, +}; + +static struct pci_driver driver = { + .name = "forcedeth", + .id_table = pci_tbl, + .probe = nv_probe, + .remove = __devexit_p(nv_remove), +}; + + +static int __init init_nic(void) +{ + printk(KERN_INFO "forcedeth.c: Reverse Engineered nForce ethernet driver. Version %s.\n", FORCEDETH_VERSION); + return pci_module_init(&driver); +} + +static void __exit exit_nic(void) +{ + pci_unregister_driver(&driver); +} + +MODULE_PARM(max_interrupt_work, "i"); +MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt"); + +MODULE_AUTHOR("Manfred Spraul "); +MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver"); +MODULE_LICENSE("GPL"); + +MODULE_DEVICE_TABLE(pci, pci_tbl); + +module_init(init_nic); +module_exit(exit_nic);