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authorH. Peter Anvin <hpa@zytor.com>2008-03-26 16:25:35 -0700
committerH. Peter Anvin <hpa@zytor.com>2008-03-26 16:25:35 -0700
commit9eddd22a7b53b1d02fbae0d987df8af122924248 (patch)
tree882f5152880b0b1aa2d7a0619d30065acc69fb16 /gpxe/src/drivers/net/forcedeth.c
parentbbb8f15936b851e6a0ef6f7bb2c95197bff35994 (diff)
downloadsyslinux-9eddd22a7b53b1d02fbae0d987df8af122924248.tar.gz
Add gPXE into the source tree; build unified imagesyslinux-3.70-pre7
Diffstat (limited to 'gpxe/src/drivers/net/forcedeth.c')
-rw-r--r--gpxe/src/drivers/net/forcedeth.c1436
1 files changed, 1436 insertions, 0 deletions
diff --git a/gpxe/src/drivers/net/forcedeth.c b/gpxe/src/drivers/net/forcedeth.c
new file mode 100644
index 00000000..f6195885
--- /dev/null
+++ b/gpxe/src/drivers/net/forcedeth.c
@@ -0,0 +1,1436 @@
+/**************************************************************************
+* forcedeth.c -- Etherboot device driver for the NVIDIA nForce
+* media access controllers.
+*
+* Note: This driver is based on the Linux driver that was based on
+* a cleanroom reimplementation which was 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.
+*
+* Written 2004 by Timothy Legge <tlegge@rogers.com>
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation; either version 2 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*
+* Portions of this code based on:
+* forcedeth: Ethernet driver for NVIDIA nForce media access controllers:
+*
+* (C) 2003 Manfred Spraul
+* See Linux Driver for full information
+*
+* Linux Driver Version 0.30, 25 Sep 2004
+* Linux Kernel 2.6.10
+*
+*
+* REVISION HISTORY:
+* ================
+* v1.0 01-31-2004 timlegge Initial port of Linux driver
+* v1.1 02-03-2004 timlegge Large Clean up, first release
+* v1.2 05-14-2005 timlegge Add Linux 0.22 to .030 features
+*
+* Indent Options: indent -kr -i8
+***************************************************************************/
+
+/* to get some global routines like printf */
+#include "etherboot.h"
+/* to get the interface to the body of the program */
+#include "nic.h"
+/* to get the PCI support functions, if this is a PCI NIC */
+#include <gpxe/pci.h>
+/* Include timer support functions */
+#include <gpxe/ethernet.h>
+#include "mii.h"
+
+#define drv_version "v1.2"
+#define drv_date "05-14-2005"
+
+//#define TFTM_DEBUG
+#ifdef TFTM_DEBUG
+#define dprintf(x) printf x
+#else
+#define dprintf(x)
+#endif
+
+#define ETH_DATA_LEN 1500
+
+/* Condensed operations for readability. */
+#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr))
+#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr))
+
+static unsigned long BASE;
+/* NIC specific static variables go here */
+#define PCI_DEVICE_ID_NVIDIA_NVENET_1 0x01c3
+#define PCI_DEVICE_ID_NVIDIA_NVENET_2 0x0066
+#define PCI_DEVICE_ID_NVIDIA_NVENET_4 0x0086
+#define PCI_DEVICE_ID_NVIDIA_NVENET_5 0x008c
+#define PCI_DEVICE_ID_NVIDIA_NVENET_3 0x00d6
+#define PCI_DEVICE_ID_NVIDIA_NVENET_7 0x00df
+#define PCI_DEVICE_ID_NVIDIA_NVENET_6 0x00e6
+#define PCI_DEVICE_ID_NVIDIA_NVENET_8 0x0056
+#define PCI_DEVICE_ID_NVIDIA_NVENET_9 0x0057
+#define PCI_DEVICE_ID_NVIDIA_NVENET_10 0x0037
+#define PCI_DEVICE_ID_NVIDIA_NVENET_11 0x0038
+
+
+/*
+ * Hardware access:
+ */
+
+#define DEV_NEED_LASTPACKET1 0x0001 /* set LASTPACKET1 in tx flags */
+#define DEV_IRQMASK_1 0x0002 /* use NVREG_IRQMASK_WANTED_1 for irq mask */
+#define DEV_IRQMASK_2 0x0004 /* use NVREG_IRQMASK_WANTED_2 for irq mask */
+#define DEV_NEED_TIMERIRQ 0x0008 /* set the timer irq flag in the irq mask */
+#define DEV_NEED_LINKTIMER 0x0010 /* poll link settings. Relies on the timer irq */
+
+enum {
+ NvRegIrqStatus = 0x000,
+#define NVREG_IRQSTAT_MIIEVENT 0040
+#define NVREG_IRQSTAT_MASK 0x1ff
+ NvRegIrqMask = 0x004,
+#define NVREG_IRQ_RX_ERROR 0x0001
+#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_ERROR|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 RX_NIC_BUFSIZE
+ 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
+#define NVREG_RNDSEED_FORCE2 0x2d00
+#define NVREG_RNDSEED_FORCE3 0x7400
+
+ 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,
+
+ NvRegPhyInterface = 0xC0,
+#define PHY_RGMII 0x10000000
+
+ 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 1000
+#define NVREG_LINKSPEED_100 100
+#define NVREG_LINKSPEED_1000 50
+ NvRegUnknownSetupReg5 = 0x130,
+#define NVREG_UNKSETUP5_BIT31 (1<<31)
+ NvRegUnknownSetupReg3 = 0x13c,
+#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
+#define NVREG_TXRXCTL_RXCHECK 0x0400
+ 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 0x40000
+#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 0x08000
+#define NVREG_MIICTL_WRITE 0x00400
+#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
+#define NVREG_WAKEUPFLAGS_ENABLE 0x1111
+
+ 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
+};
+
+#define FLAG_MASK_V1 0xffff0000
+#define FLAG_MASK_V2 0xffffc000
+#define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
+#define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
+
+#define NV_TX_LASTPACKET (1<<16)
+#define NV_TX_RETRYERROR (1<<19)
+#define NV_TX_LASTPACKET1 (1<<24)
+#define NV_TX_DEFERRED (1<<26)
+#define NV_TX_CARRIERLOST (1<<27)
+#define NV_TX_LATECOLLISION (1<<28)
+#define NV_TX_UNDERFLOW (1<<29)
+#define NV_TX_ERROR (1<<30)
+#define NV_TX_VALID (1<<31)
+
+#define NV_TX2_LASTPACKET (1<<29)
+#define NV_TX2_RETRYERROR (1<<18)
+#define NV_TX2_LASTPACKET1 (1<<23)
+#define NV_TX2_DEFERRED (1<<25)
+#define NV_TX2_CARRIERLOST (1<<26)
+#define NV_TX2_LATECOLLISION (1<<27)
+#define NV_TX2_UNDERFLOW (1<<28)
+/* error and valid are the same for both */
+#define NV_TX2_ERROR (1<<30)
+#define NV_TX2_VALID (1<<31)
+
+#define NV_RX_DESCRIPTORVALID (1<<16)
+#define NV_RX_MISSEDFRAME (1<<17)
+#define NV_RX_SUBSTRACT1 (1<<18)
+#define NV_RX_ERROR1 (1<<23)
+#define NV_RX_ERROR2 (1<<24)
+#define NV_RX_ERROR3 (1<<25)
+#define NV_RX_ERROR4 (1<<26)
+#define NV_RX_CRCERR (1<<27)
+#define NV_RX_OVERFLOW (1<<28)
+#define NV_RX_FRAMINGERR (1<<29)
+#define NV_RX_ERROR (1<<30)
+#define NV_RX_AVAIL (1<<31)
+
+#define NV_RX2_CHECKSUMMASK (0x1C000000)
+#define NV_RX2_CHECKSUMOK1 (0x10000000)
+#define NV_RX2_CHECKSUMOK2 (0x14000000)
+#define NV_RX2_CHECKSUMOK3 (0x18000000)
+#define NV_RX2_DESCRIPTORVALID (1<<29)
+#define NV_RX2_SUBSTRACT1 (1<<25)
+#define NV_RX2_ERROR1 (1<<18)
+#define NV_RX2_ERROR2 (1<<19)
+#define NV_RX2_ERROR3 (1<<20)
+#define NV_RX2_ERROR4 (1<<21)
+#define NV_RX2_CRCERR (1<<22)
+#define NV_RX2_OVERFLOW (1<<23)
+#define NV_RX2_FRAMINGERR (1<<24)
+/* error and avail are the same for both */
+#define NV_RX2_ERROR (1<<30)
+#define NV_RX2_AVAIL (1<<31)
+
+/* 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 RX_RING 4
+#define TX_RING 2
+
+/*
+ * If your nic mysteriously hangs then try to reduce the limits
+ * to 1/0: It might be required to set NV_TX_LASTPACKET in the
+ * last valid ring entry. But this would be impossible to
+ * implement - probably a disassembly error.
+ */
+#define TX_LIMIT_STOP 63
+#define TX_LIMIT_START 62
+
+/* rx/tx mac addr + type + vlan + align + slack*/
+#define RX_NIC_BUFSIZE (ETH_DATA_LEN + 64)
+/* even more slack */
+#define RX_ALLOC_BUFSIZE (ETH_DATA_LEN + 128)
+
+#define OOM_REFILL (1+HZ/20)
+#define POLL_WAIT (1+HZ/100)
+#define LINK_TIMEOUT (3*HZ)
+
+/*
+ * desc_ver values:
+ * This field has two purposes:
+ * - Newer nics uses a different ring layout. The layout is selected by
+ * comparing np->desc_ver with DESC_VER_xy.
+ * - It contains bits that are forced on when writing to NvRegTxRxControl.
+ */
+#define DESC_VER_1 0x0
+#define DESC_VER_2 (0x02100|NVREG_TXRXCTL_RXCHECK)
+
+/* PHY defines */
+#define PHY_OUI_MARVELL 0x5043
+#define PHY_OUI_CICADA 0x03f1
+#define PHYID1_OUI_MASK 0x03ff
+#define PHYID1_OUI_SHFT 6
+#define PHYID2_OUI_MASK 0xfc00
+#define PHYID2_OUI_SHFT 10
+#define PHY_INIT1 0x0f000
+#define PHY_INIT2 0x0e00
+#define PHY_INIT3 0x01000
+#define PHY_INIT4 0x0200
+#define PHY_INIT5 0x0004
+#define PHY_INIT6 0x02000
+#define PHY_GIGABIT 0x0100
+
+#define PHY_TIMEOUT 0x1
+#define PHY_ERROR 0x2
+
+#define PHY_100 0x1
+#define PHY_1000 0x2
+#define PHY_HALF 0x100
+
+/* FIXME: MII defines that should be added to <linux/mii.h> */
+#define MII_1000BT_CR 0x09
+#define MII_1000BT_SR 0x0a
+#define ADVERTISE_1000FULL 0x0200
+#define ADVERTISE_1000HALF 0x0100
+#define LPA_1000FULL 0x0800
+#define LPA_1000HALF 0x0400
+
+/* Big endian: should work, but is untested */
+struct ring_desc {
+ u32 PacketBuffer;
+ u32 FlagLen;
+};
+
+
+/* Define the TX and RX Descriptor and Buffers */
+struct {
+ struct ring_desc tx_ring[TX_RING];
+ unsigned char txb[TX_RING * RX_NIC_BUFSIZE];
+ struct ring_desc rx_ring[RX_RING];
+ unsigned char rxb[RX_RING * RX_NIC_BUFSIZE];
+} forcedeth_bufs __shared;
+#define tx_ring forcedeth_bufs.tx_ring
+#define rx_ring forcedeth_bufs.rx_ring
+#define txb forcedeth_bufs.txb
+#define rxb forcedeth_bufs.rxb
+
+/* Private Storage for the NIC */
+static struct forcedeth_private {
+ /* General data:
+ * Locking: spin_lock(&np->lock); */
+ int in_shutdown;
+ u32 linkspeed;
+ int duplex;
+ int phyaddr;
+ int wolenabled;
+ unsigned int phy_oui;
+ u16 gigabit;
+
+ /* General data: RO fields */
+ u8 *ring_addr;
+ u32 orig_mac[2];
+ u32 irqmask;
+ u32 desc_ver;
+ /* rx specific fields.
+ * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
+ */
+ unsigned int cur_rx, refill_rx;
+
+ /*
+ * tx specific fields.
+ */
+ unsigned int next_tx, nic_tx;
+ u32 tx_flags;
+} npx;
+
+static struct forcedeth_private *np;
+
+static inline void pci_push(u8 * base)
+{
+ /* force out pending posted writes */
+ readl(base);
+}
+
+static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
+{
+ return le32_to_cpu(prd->FlagLen)
+ & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
+}
+
+static int reg_delay(int offset, u32 mask,
+ u32 target, int delay, int delaymax, const char *msg)
+{
+ u8 *base = (u8 *) BASE;
+
+ pci_push(base);
+ do {
+ udelay(delay);
+ delaymax -= delay;
+ if (delaymax < 0) {
+ if (msg)
+ printf(msg);
+ return 1;
+ }
+ } while ((readl(base + offset) & mask) != target);
+ return 0;
+}
+
+#define MII_READ (-1)
+#define MII_PHYSID1 0x02 /* PHYS ID 1 */
+#define MII_PHYSID2 0x03 /* PHYS ID 2 */
+#define MII_BMCR 0x00 /* Basic mode control register */
+#define MII_BMSR 0x01 /* Basic mode status register */
+#define MII_ADVERTISE 0x04 /* Advertisement control reg */
+#define MII_LPA 0x05 /* Link partner ability reg */
+
+#define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */
+
+/* Link partner ability register. */
+#define LPA_SLCT 0x001f /* Same as advertise selector */
+#define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */
+#define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */
+#define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */
+#define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */
+#define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */
+#define LPA_RESV 0x1c00 /* Unused... */
+#define LPA_RFAULT 0x2000 /* Link partner faulted */
+#define LPA_LPACK 0x4000 /* Link partner acked us */
+#define LPA_NPAGE 0x8000 /* Next page bit */
+
+/* mii_rw: read/write a register on the PHY.
+ *
+ * Caller must guarantee serialization
+ */
+static int mii_rw(struct nic *nic __unused, int addr, int miireg,
+ int value)
+{
+ u8 *base = (u8 *) BASE;
+ u32 reg;
+ int retval;
+
+ writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
+
+ reg = readl(base + NvRegMIIControl);
+ if (reg & NVREG_MIICTL_INUSE) {
+ writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
+ udelay(NV_MIIBUSY_DELAY);
+ }
+
+ reg =
+ (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
+ if (value != MII_READ) {
+ writel(value, base + NvRegMIIData);
+ reg |= NVREG_MIICTL_WRITE;
+ }
+ writel(reg, base + NvRegMIIControl);
+
+ if (reg_delay(NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
+ NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX, NULL)) {
+ dprintf(("mii_rw of reg %d at PHY %d timed out.\n",
+ miireg, addr));
+ retval = -1;
+ } else if (value != MII_READ) {
+ /* it was a write operation - fewer failures are detectable */
+ dprintf(("mii_rw wrote 0x%x to reg %d at PHY %d\n",
+ value, miireg, addr));
+ retval = 0;
+ } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
+ dprintf(("mii_rw of reg %d at PHY %d failed.\n",
+ miireg, addr));
+ retval = -1;
+ } else {
+ retval = readl(base + NvRegMIIData);
+ dprintf(("mii_rw read from reg %d at PHY %d: 0x%x.\n",
+ miireg, addr, retval));
+ }
+ return retval;
+}
+
+static int phy_reset(struct nic *nic)
+{
+
+ u32 miicontrol;
+ unsigned int tries = 0;
+
+ miicontrol = mii_rw(nic, np->phyaddr, MII_BMCR, MII_READ);
+ miicontrol |= BMCR_RESET;
+ if (mii_rw(nic, np->phyaddr, MII_BMCR, miicontrol)) {
+ return -1;
+ }
+
+ /* wait for 500ms */
+ mdelay(500);
+
+ /* must wait till reset is deasserted */
+ while (miicontrol & BMCR_RESET) {
+ mdelay(10);
+ miicontrol = mii_rw(nic, np->phyaddr, MII_BMCR, MII_READ);
+ /* FIXME: 100 tries seem excessive */
+ if (tries++ > 100)
+ return -1;
+ }
+ return 0;
+}
+
+static int phy_init(struct nic *nic)
+{
+ u8 *base = (u8 *) BASE;
+ u32 phyinterface, phy_reserved, mii_status, mii_control,
+ mii_control_1000, reg;
+
+ /* set advertise register */
+ reg = mii_rw(nic, np->phyaddr, MII_ADVERTISE, MII_READ);
+ reg |=
+ (ADVERTISE_10HALF | ADVERTISE_10FULL | ADVERTISE_100HALF |
+ ADVERTISE_100FULL | 0x800 | 0x400);
+ if (mii_rw(nic, np->phyaddr, MII_ADVERTISE, reg)) {
+ printf("phy write to advertise failed.\n");
+ return PHY_ERROR;
+ }
+
+ /* get phy interface type */
+ phyinterface = readl(base + NvRegPhyInterface);
+
+ /* see if gigabit phy */
+ mii_status = mii_rw(nic, np->phyaddr, MII_BMSR, MII_READ);
+
+ if (mii_status & PHY_GIGABIT) {
+ np->gigabit = PHY_GIGABIT;
+ mii_control_1000 =
+ mii_rw(nic, np->phyaddr, MII_1000BT_CR, MII_READ);
+ mii_control_1000 &= ~ADVERTISE_1000HALF;
+ if (phyinterface & PHY_RGMII)
+ mii_control_1000 |= ADVERTISE_1000FULL;
+ else
+ mii_control_1000 &= ~ADVERTISE_1000FULL;
+
+ if (mii_rw
+ (nic, np->phyaddr, MII_1000BT_CR, mii_control_1000)) {
+ printf("phy init failed.\n");
+ return PHY_ERROR;
+ }
+ } else
+ np->gigabit = 0;
+
+ /* reset the phy */
+ if (phy_reset(nic)) {
+ printf("phy reset failed\n");
+ return PHY_ERROR;
+ }
+
+ /* phy vendor specific configuration */
+ if ((np->phy_oui == PHY_OUI_CICADA) && (phyinterface & PHY_RGMII)) {
+ phy_reserved =
+ mii_rw(nic, np->phyaddr, MII_RESV1, MII_READ);
+ phy_reserved &= ~(PHY_INIT1 | PHY_INIT2);
+ phy_reserved |= (PHY_INIT3 | PHY_INIT4);
+ if (mii_rw(nic, np->phyaddr, MII_RESV1, phy_reserved)) {
+ printf("phy init failed.\n");
+ return PHY_ERROR;
+ }
+ phy_reserved =
+ mii_rw(nic, np->phyaddr, MII_NCONFIG, MII_READ);
+ phy_reserved |= PHY_INIT5;
+ if (mii_rw(nic, np->phyaddr, MII_NCONFIG, phy_reserved)) {
+ printf("phy init failed.\n");
+ return PHY_ERROR;
+ }
+ }
+ if (np->phy_oui == PHY_OUI_CICADA) {
+ phy_reserved =
+ mii_rw(nic, np->phyaddr, MII_SREVISION, MII_READ);
+ phy_reserved |= PHY_INIT6;
+ if (mii_rw(nic, np->phyaddr, MII_SREVISION, phy_reserved)) {
+ printf("phy init failed.\n");
+ return PHY_ERROR;
+ }
+ }
+
+ /* restart auto negotiation */
+ mii_control = mii_rw(nic, np->phyaddr, MII_BMCR, MII_READ);
+ mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
+ if (mii_rw(nic, np->phyaddr, MII_BMCR, mii_control)) {
+ return PHY_ERROR;
+ }
+
+ return 0;
+}
+
+static void start_rx(struct nic *nic __unused)
+{
+ u8 *base = (u8 *) BASE;
+
+ dprintf(("start_rx\n"));
+ /* 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(void)
+{
+ u8 *base = (u8 *) BASE;
+
+ dprintf(("stop_rx\n"));
+ writel(0, base + NvRegReceiverControl);
+ reg_delay(NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
+ NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX,
+ "stop_rx: ReceiverStatus remained busy");
+
+ udelay(NV_RXSTOP_DELAY2);
+ writel(0, base + NvRegLinkSpeed);
+}
+
+static void start_tx(struct nic *nic __unused)
+{
+ u8 *base = (u8 *) BASE;
+
+ dprintf(("start_tx\n"));
+ writel(NVREG_XMITCTL_START, base + NvRegTransmitterControl);
+ pci_push(base);
+}
+
+static void stop_tx(void)
+{
+ u8 *base = (u8 *) BASE;
+
+ dprintf(("stop_tx\n"));
+ writel(0, base + NvRegTransmitterControl);
+ reg_delay(NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
+ NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX,
+ "stop_tx: TransmitterStatus remained busy");
+
+ udelay(NV_TXSTOP_DELAY2);
+ writel(0, base + NvRegUnknownTransmitterReg);
+}
+
+
+static void txrx_reset(struct nic *nic __unused)
+{
+ u8 *base = (u8 *) BASE;
+
+ dprintf(("txrx_reset\n"));
+ writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->desc_ver,
+ base + NvRegTxRxControl);
+
+ pci_push(base);
+ udelay(NV_TXRX_RESET_DELAY);
+ writel(NVREG_TXRXCTL_BIT2 | np->desc_ver, base + NvRegTxRxControl);
+ pci_push(base);
+}
+
+/*
+ * 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 nic *nic __unused)
+{
+ unsigned int refill_rx = np->refill_rx;
+ int i;
+ //while (np->cur_rx != refill_rx) {
+ for (i = 0; i < RX_RING; i++) {
+ //int nr = refill_rx % RX_RING;
+ rx_ring[i].PacketBuffer =
+ virt_to_le32desc(&rxb[i * RX_NIC_BUFSIZE]);
+ wmb();
+ rx_ring[i].FlagLen =
+ cpu_to_le32(RX_NIC_BUFSIZE | NV_RX_AVAIL);
+ /* printf("alloc_rx: Packet %d marked as Available\n",
+ refill_rx); */
+ refill_rx++;
+ }
+ np->refill_rx = refill_rx;
+ if (np->cur_rx - refill_rx == RX_RING)
+ return 1;
+ return 0;
+}
+
+static int update_linkspeed(struct nic *nic)
+{
+ int adv, lpa;
+ u32 newls;
+ int newdup = np->duplex;
+ u32 mii_status;
+ int retval = 0;
+ u32 control_1000, status_1000, phyreg;
+ u8 *base = (u8 *) BASE;
+ int i;
+
+ /* BMSR_LSTATUS is latched, read it twice:
+ * we want the current value.
+ */
+ mii_rw(nic, np->phyaddr, MII_BMSR, MII_READ);
+ mii_status = mii_rw(nic, np->phyaddr, MII_BMSR, MII_READ);
+
+#if 1
+ //yhlu
+ for(i=0;i<30;i++) {
+ mii_status = mii_rw(nic, np->phyaddr, MII_BMSR, MII_READ);
+ if((mii_status & BMSR_LSTATUS) && (mii_status & BMSR_ANEGCOMPLETE)) break;
+ mdelay(100);
+ }
+#endif
+
+ if (!(mii_status & BMSR_LSTATUS)) {
+ printf
+ ("no link detected by phy - falling back to 10HD.\n");
+ newls = NVREG_LINKSPEED_FORCE | NVREG_LINKSPEED_10;
+ newdup = 0;
+ retval = 0;
+ goto set_speed;
+ }
+
+ /* check auto negotiation is complete */
+ if (!(mii_status & BMSR_ANEGCOMPLETE)) {
+ /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
+ newls = NVREG_LINKSPEED_FORCE | NVREG_LINKSPEED_10;
+ newdup = 0;
+ retval = 0;
+ printf("autoneg not completed - falling back to 10HD.\n");
+ goto set_speed;
+ }
+
+ retval = 1;
+ if (np->gigabit == PHY_GIGABIT) {
+ control_1000 =
+ mii_rw(nic, np->phyaddr, MII_1000BT_CR, MII_READ);
+ status_1000 =
+ mii_rw(nic, np->phyaddr, MII_1000BT_SR, MII_READ);
+
+ if ((control_1000 & ADVERTISE_1000FULL) &&
+ (status_1000 & LPA_1000FULL)) {
+ printf
+ ("update_linkspeed: GBit ethernet detected.\n");
+ newls =
+ NVREG_LINKSPEED_FORCE | NVREG_LINKSPEED_1000;
+ newdup = 1;
+ goto set_speed;
+ }
+ }
+
+ adv = mii_rw(nic, np->phyaddr, MII_ADVERTISE, MII_READ);
+ lpa = mii_rw(nic, np->phyaddr, MII_LPA, MII_READ);
+ dprintf(("update_linkspeed: PHY advertises 0x%hX, lpa 0x%hX.\n",
+ 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 {
+ printf("bad ability %hX - falling back to 10HD.\n", lpa);
+ newls = NVREG_LINKSPEED_FORCE | NVREG_LINKSPEED_10;
+ newdup = 0;
+ }
+
+ set_speed:
+ if (np->duplex == newdup && np->linkspeed == newls)
+ return retval;
+
+ dprintf(("changing link setting from %d/%s to %d/%s.\n",
+ np->linkspeed, np->duplex ? "Full-Duplex": "Half-Duplex", newls, newdup ? "Full-Duplex": "Half-Duplex"));
+
+ np->duplex = newdup;
+ np->linkspeed = newls;
+
+ if (np->gigabit == PHY_GIGABIT) {
+ phyreg = readl(base + NvRegRandomSeed);
+ phyreg &= ~(0x3FF00);
+ if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
+ phyreg |= NVREG_RNDSEED_FORCE3;
+ else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
+ phyreg |= NVREG_RNDSEED_FORCE2;
+ else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
+ phyreg |= NVREG_RNDSEED_FORCE;
+ writel(phyreg, base + NvRegRandomSeed);
+ }
+
+ phyreg = readl(base + NvRegPhyInterface);
+ phyreg &= ~(PHY_HALF | PHY_100 | PHY_1000);
+ if (np->duplex == 0)
+ phyreg |= PHY_HALF;
+ if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
+ phyreg |= PHY_100;
+ else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
+ phyreg |= PHY_1000;
+ writel(phyreg, base + NvRegPhyInterface);
+
+ writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
+ base + NvRegMisc1);
+ pci_push(base);
+ writel(np->linkspeed, base + NvRegLinkSpeed);
+ pci_push(base);
+
+ return retval;
+}
+
+#if 0 /* Not used */
+static void nv_linkchange(struct nic *nic)
+{
+ if (update_linkspeed(nic)) {
+// if (netif_carrier_ok(nic)) {
+ stop_rx();
+//= } else {
+ // netif_carrier_on(dev);
+ // printk(KERN_INFO "%s: link up.\n", dev->name);
+ // }
+ start_rx(nic);
+ } else {
+ // if (netif_carrier_ok(dev)) {
+ // netif_carrier_off(dev);
+ // printk(KERN_INFO "%s: link down.\n", dev->name);
+ stop_rx();
+ // }
+ }
+}
+#endif
+
+static int init_ring(struct nic *nic)
+{
+ int i;
+
+ np->next_tx = np->nic_tx = 0;
+ for (i = 0; i < TX_RING; i++)
+ tx_ring[i].FlagLen = 0;
+
+ np->cur_rx = 0;
+ np->refill_rx = 0;
+ for (i = 0; i < RX_RING; i++)
+ rx_ring[i].FlagLen = 0;
+ return alloc_rx(nic);
+}
+
+static void set_multicast(struct nic *nic)
+{
+
+ u8 *base = (u8 *) BASE;
+ u32 addr[2];
+ u32 mask[2];
+ u32 pff;
+ u32 alwaysOff[2];
+ u32 alwaysOn[2];
+
+ memset(addr, 0, sizeof(addr));
+ memset(mask, 0, sizeof(mask));
+
+ pff = NVREG_PFF_MYADDR;
+
+ alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
+
+ 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;
+ stop_rx();
+ 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(nic);
+}
+
+/**************************************************************************
+RESET - Reset the NIC to prepare for use
+***************************************************************************/
+static int forcedeth_reset(struct nic *nic)
+{
+ u8 *base = (u8 *) BASE;
+ int ret, oom, i;
+ ret = 0;
+ dprintf(("forcedeth: open\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 + NvRegTransmitterControl);
+ writel(0, base + NvRegReceiverControl);
+
+ writel(0, base + NvRegAdapterControl);
+
+ /* 2) initialize descriptor rings */
+ oom = init_ring(nic);
+
+ writel(0, base + NvRegLinkSpeed);
+ writel(0, base + NvRegUnknownTransmitterReg);
+ txrx_reset(nic);
+ writel(0, base + NvRegUnknownSetupReg6);
+
+ np->in_shutdown = 0;
+
+ /* 3) set mac address */
+ {
+ u32 mac[2];
+
+ mac[0] =
+ (nic->node_addr[0] << 0) + (nic->node_addr[1] << 8) +
+ (nic->node_addr[2] << 16) + (nic->node_addr[3] << 24);
+ mac[1] =
+ (nic->node_addr[4] << 0) + (nic->node_addr[5] << 8);
+
+ writel(mac[0], base + NvRegMacAddrA);
+ writel(mac[1], base + NvRegMacAddrB);
+ }
+
+ /* 4) give hw rings */
+ writel((u32) virt_to_le32desc(&rx_ring[0]),
+ base + NvRegRxRingPhysAddr);
+ writel((u32) virt_to_le32desc(&tx_ring[0]),
+ base + NvRegTxRingPhysAddr);
+
+ writel(((RX_RING - 1) << NVREG_RINGSZ_RXSHIFT) +
+ ((TX_RING - 1) << NVREG_RINGSZ_TXSHIFT),
+ base + NvRegRingSizes);
+
+ /* 5) continue setup */
+ np->linkspeed = NVREG_LINKSPEED_FORCE | NVREG_LINKSPEED_10;
+ np->duplex = 0;
+ writel(np->linkspeed, base + NvRegLinkSpeed);
+ writel(NVREG_UNKSETUP3_VAL1, base + NvRegUnknownSetupReg3);
+ writel(np->desc_ver, base + NvRegTxRxControl);
+ pci_push(base);
+ writel(NVREG_TXRXCTL_BIT1 | np->desc_ver, base + NvRegTxRxControl);
+ reg_delay(NvRegUnknownSetupReg5, NVREG_UNKSETUP5_BIT31,
+ NVREG_UNKSETUP5_BIT31, NV_SETUP5_DELAY,
+ NV_SETUP5_DELAYMAX,
+ "open: SetupReg5, Bit 31 remained off\n");
+
+ writel(0, base + NvRegUnknownSetupReg4);
+// writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
+ writel(NVREG_MIISTAT_MASK2, base + NvRegMIIStatus);
+#if 0
+ printf("%d-Mbs Link, %s-Duplex\n",
+ np->linkspeed & NVREG_LINKSPEED_10 ? 10 : 100,
+ np->duplex ? "Full" : "Half");
+#endif
+
+ /* 6) continue setup */
+ writel(NVREG_MISC1_FORCE | 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 a random number */
+ i = random();
+ 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 | NVREG_ADAPTCTL_RUNNING,
+ base + NvRegAdapterControl);
+ writel(NVREG_MIISPEED_BIT8 | NVREG_MIIDELAY, base + NvRegMIISpeed);
+ writel(NVREG_UNKSETUP4_VAL, base + NvRegUnknownSetupReg4);
+ writel(NVREG_WAKEUPFLAGS_VAL, base + NvRegWakeUpFlags);
+
+ 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(0, base + NvRegIrqMask);
+ pci_push(base);
+ writel(NVREG_MIISTAT_MASK2, base + NvRegMIIStatus);
+ writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
+ pci_push(base);
+/*
+ writel(np->irqmask, base + NvRegIrqMask);
+*/
+ 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);
+
+ set_multicast(nic);
+ /* One manual link speed update: Interrupts are enabled, future link
+ * speed changes cause interrupts and are handled by nv_link_irq().
+ */
+ {
+ u32 miistat;
+ miistat = readl(base + NvRegMIIStatus);
+ writel(NVREG_MIISTAT_MASK, base + NvRegMIIStatus);
+ dprintf(("startup: got 0x%hX.\n", miistat));
+ }
+ ret = update_linkspeed(nic);
+
+ //start_rx(nic);
+ start_tx(nic);
+
+ if (ret) {
+ //Start Connection netif_carrier_on(dev);
+ } else {
+ printf("no link during initialization.\n");
+ }
+
+ return ret;
+}
+
+/*
+ * extern void hex_dump(const char *data, const unsigned int len);
+*/
+/**************************************************************************
+POLL - Wait for a frame
+***************************************************************************/
+static int forcedeth_poll(struct nic *nic, int retrieve)
+{
+ /* return true if there's an ethernet packet ready to read */
+ /* nic->packet should contain data on return */
+ /* nic->packetlen should contain length of data */
+
+ int len;
+ int i;
+ u32 Flags;
+
+ i = np->cur_rx % RX_RING;
+
+ Flags = le32_to_cpu(rx_ring[i].FlagLen);
+ len = nv_descr_getlength(&rx_ring[i], np->desc_ver);
+
+ if (Flags & NV_RX_AVAIL)
+ return 0; /* still owned by hardware, */
+
+ if (np->desc_ver == DESC_VER_1) {
+ if (!(Flags & NV_RX_DESCRIPTORVALID))
+ return 0;
+ } else {
+ if (!(Flags & NV_RX2_DESCRIPTORVALID))
+ return 0;
+ }
+
+ if (!retrieve)
+ return 1;
+
+ /* got a valid packet - forward it to the network core */
+ nic->packetlen = len;
+ memcpy(nic->packet, rxb + (i * RX_NIC_BUFSIZE), nic->packetlen);
+/*
+ * hex_dump(rxb + (i * RX_NIC_BUFSIZE), len);
+*/
+ wmb();
+ np->cur_rx++;
+ alloc_rx(nic);
+ return 1;
+}
+
+
+/**************************************************************************
+TRANSMIT - Transmit a frame
+***************************************************************************/
+static void forcedeth_transmit(struct nic *nic, const char *d, /* Destination */
+ unsigned int t, /* Type */
+ unsigned int s, /* size */
+ const char *p)
+{ /* Packet */
+ /* send the packet to destination */
+ u8 *ptxb;
+ u16 nstype;
+ u8 *base = (u8 *) BASE;
+ int nr = np->next_tx % TX_RING;
+
+ /* point to the current txb incase multiple tx_rings are used */
+ ptxb = txb + (nr * RX_NIC_BUFSIZE);
+ //np->tx_skbuff[nr] = ptxb;
+
+ /* copy the packet to ring buffer */
+ memcpy(ptxb, d, ETH_ALEN); /* dst */
+ memcpy(ptxb + ETH_ALEN, nic->node_addr, ETH_ALEN); /* src */
+ nstype = htons((u16) t); /* type */
+ memcpy(ptxb + 2 * ETH_ALEN, (u8 *) & nstype, 2); /* type */
+ memcpy(ptxb + ETH_HLEN, p, s);
+
+ s += ETH_HLEN;
+ while (s < ETH_ZLEN) /* pad to min length */
+ ptxb[s++] = '\0';
+
+ tx_ring[nr].PacketBuffer = (u32) virt_to_le32desc(ptxb);
+
+ wmb();
+ tx_ring[nr].FlagLen = cpu_to_le32((s - 1) | np->tx_flags);
+
+ writel(NVREG_TXRXCTL_KICK | np->desc_ver, base + NvRegTxRxControl);
+ pci_push(base);
+ np->next_tx++;
+}
+
+/**************************************************************************
+DISABLE - Turn off ethernet interface
+***************************************************************************/
+static void forcedeth_disable ( struct nic *nic __unused ) {
+ /* put the card in its initial state */
+ /* This function serves 3 purposes.
+ * This disables DMA and interrupts so we don't receive
+ * unexpected packets or interrupts from the card after
+ * etherboot has finished.
+ * This frees resources so etherboot may use
+ * this driver on another interface
+ * This allows etherboot to reinitialize the interface
+ * if something is something goes wrong.
+ */
+ u8 *base = (u8 *) BASE;
+ np->in_shutdown = 1;
+ stop_tx();
+ stop_rx();
+
+ /* disable interrupts on the nic or we will lock up */
+ writel(0, base + NvRegIrqMask);
+ pci_push(base);
+ dprintf(("Irqmask is zero again\n"));
+
+ /* specia op:o write back the misordered MAC address - otherwise
+ * the next probe_nic would see a wrong address.
+ */
+ writel(np->orig_mac[0], base + NvRegMacAddrA);
+ writel(np->orig_mac[1], base + NvRegMacAddrB);
+}
+
+/**************************************************************************
+IRQ - Enable, Disable, or Force interrupts
+***************************************************************************/
+static void forcedeth_irq(struct nic *nic __unused,
+ irq_action_t action __unused)
+{
+ switch (action) {
+ case DISABLE:
+ break;
+ case ENABLE:
+ break;
+ case FORCE:
+ break;
+ }
+}
+
+static struct nic_operations forcedeth_operations = {
+ .connect = dummy_connect,
+ .poll = forcedeth_poll,
+ .transmit = forcedeth_transmit,
+ .irq = forcedeth_irq,
+
+};
+
+/**************************************************************************
+PROBE - Look for an adapter, this routine's visible to the outside
+***************************************************************************/
+#define IORESOURCE_MEM 0x00000200
+#define board_found 1
+#define valid_link 0
+static int forcedeth_probe ( struct nic *nic, struct pci_device *pci ) {
+
+ unsigned long addr;
+ int sz;
+ u8 *base;
+ int i;
+
+ if (pci->ioaddr == 0)
+ return 0;
+
+ printf("forcedeth.c: Found %s, vendor=0x%hX, device=0x%hX\n",
+ pci->driver_name, pci->vendor, pci->device);
+
+ nic->ioaddr = pci->ioaddr;
+ nic->irqno = 0;
+
+ /* point to private storage */
+ np = &npx;
+
+ adjust_pci_device(pci);
+
+ addr = pci_bar_start(pci, PCI_BASE_ADDRESS_0);
+ sz = pci_bar_size(pci, PCI_BASE_ADDRESS_0);
+
+ /* BASE is used throughout to address the card */
+ BASE = (unsigned long) ioremap(addr, sz);
+ if (!BASE)
+ return 0;
+
+ /* handle different descriptor versions */
+ if (pci->device == PCI_DEVICE_ID_NVIDIA_NVENET_1 ||
+ pci->device == PCI_DEVICE_ID_NVIDIA_NVENET_2 ||
+ pci->device == PCI_DEVICE_ID_NVIDIA_NVENET_3)
+ np->desc_ver = DESC_VER_1;
+ else
+ np->desc_ver = DESC_VER_2;
+
+ //rx_ring[0] = rx_ring;
+ //tx_ring[0] = tx_ring;
+
+ /* read the mac address */
+ base = (u8 *) BASE;
+ np->orig_mac[0] = readl(base + NvRegMacAddrA);
+ np->orig_mac[1] = readl(base + NvRegMacAddrB);
+
+ nic->node_addr[0] = (np->orig_mac[1] >> 8) & 0xff;
+ nic->node_addr[1] = (np->orig_mac[1] >> 0) & 0xff;
+ nic->node_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
+ nic->node_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
+ nic->node_addr[4] = (np->orig_mac[0] >> 8) & 0xff;
+ nic->node_addr[5] = (np->orig_mac[0] >> 0) & 0xff;
+#ifdef LINUX
+ 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);
+ }
+#endif
+
+ DBG ( "%s: MAC Address %s\n", pci->driver_name, eth_ntoa ( nic->node_addr ) );
+
+ /* disable WOL */
+ writel(0, base + NvRegWakeUpFlags);
+ np->wolenabled = 0;
+
+ if (np->desc_ver == DESC_VER_1) {
+ np->tx_flags = NV_TX_LASTPACKET | NV_TX_VALID;
+ } else {
+ np->tx_flags = NV_TX2_LASTPACKET | NV_TX2_VALID;
+ }
+
+ switch (pci->device) {
+ case 0x01C3: // nforce
+ // DEV_IRQMASK_1|DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
+ np->irqmask = NVREG_IRQMASK_WANTED_2 | NVREG_IRQ_TIMER;
+ // np->need_linktimer = 1;
+ // np->link_timeout = jiffies + LINK_TIMEOUT;
+ break;
+ case 0x0066:
+ /* Fall Through */
+ case 0x00D6:
+ // DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER
+ np->irqmask = NVREG_IRQMASK_WANTED_2;
+ np->irqmask |= NVREG_IRQ_TIMER;
+ // np->need_linktimer = 1;
+ // np->link_timeout = jiffies + LINK_TIMEOUT;
+ if (np->desc_ver == DESC_VER_1)
+ np->tx_flags |= NV_TX_LASTPACKET1;
+ else
+ np->tx_flags |= NV_TX2_LASTPACKET1;
+ break;
+ case 0x0086:
+ /* Fall Through */
+ case 0x008c:
+ /* Fall Through */
+ case 0x00e6:
+ /* Fall Through */
+ case 0x00df:
+ /* Fall Through */
+ case 0x0056:
+ /* Fall Through */
+ case 0x0057:
+ /* Fall Through */
+ case 0x0037:
+ /* Fall Through */
+ case 0x0038:
+ //DEV_NEED_LASTPACKET1|DEV_IRQMASK_2|DEV_NEED_TIMERIRQ
+ np->irqmask = NVREG_IRQMASK_WANTED_2;
+ np->irqmask |= NVREG_IRQ_TIMER;
+ // np->need_linktimer = 1;
+ // np->link_timeout = jiffies + LINK_TIMEOUT;
+ if (np->desc_ver == DESC_VER_1)
+ np->tx_flags |= NV_TX_LASTPACKET1;
+ else
+ np->tx_flags |= NV_TX2_LASTPACKET1;
+ break;
+ default:
+ printf
+ ("Your card was undefined in this driver. Review driver_data in Linux driver and send a patch\n");
+ }
+
+ /* find a suitable phy */
+ for (i = 1; i < 32; i++) {
+ int id1, id2;
+ id1 = mii_rw(nic, i, MII_PHYSID1, MII_READ);
+ if (id1 < 0 || id1 == 0xffff)
+ continue;
+ id2 = mii_rw(nic, i, MII_PHYSID2, MII_READ);
+ if (id2 < 0 || id2 == 0xffff)
+ continue;
+ id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
+ id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
+ dprintf
+ (("%s: open: Found PHY %hX:%hX at address %d.\n",
+ pci->driver_name, id1, id2, i));
+ np->phyaddr = i;
+ np->phy_oui = id1 | id2;
+ break;
+ }
+ if (i == 32) {
+ /* PHY in isolate mode? No phy attached and user wants to
+ * test loopback? Very odd, but can be correct.
+ */
+ printf
+ ("%s: open: Could not find a valid PHY.\n", pci->driver_name);
+ }
+
+ if (i != 32) {
+ /* reset it */
+ phy_init(nic);
+ }
+
+ dprintf(("%s: forcedeth.c: subsystem: %hX:%hX bound to %s\n",
+ pci->driver_name, pci->vendor, pci->dev_id, pci->driver_name));
+ if(!forcedeth_reset(nic)) return 0; // no valid link
+
+ /* point to NIC specific routines */
+ nic->nic_op = &forcedeth_operations;
+ return 1;
+}
+
+static struct pci_device_id forcedeth_nics[] = {
+PCI_ROM(0x10de, 0x01C3, "nforce", "nForce NVENET_1 Ethernet Controller"),
+PCI_ROM(0x10de, 0x0066, "nforce2", "nForce NVENET_2 Ethernet Controller"),
+PCI_ROM(0x10de, 0x00D6, "nforce3", "nForce NVENET_3 Ethernet Controller"),
+PCI_ROM(0x10de, 0x0086, "nforce4", "nForce NVENET_4 Ethernet Controller"),
+PCI_ROM(0x10de, 0x008c, "nforce5", "nForce NVENET_5 Ethernet Controller"),
+PCI_ROM(0x10de, 0x00e6, "nforce6", "nForce NVENET_6 Ethernet Controller"),
+PCI_ROM(0x10de, 0x00df, "nforce7", "nForce NVENET_7 Ethernet Controller"),
+PCI_ROM(0x10de, 0x0056, "nforce8", "nForce NVENET_8 Ethernet Controller"),
+PCI_ROM(0x10de, 0x0057, "nforce9", "nForce NVENET_9 Ethernet Controller"),
+PCI_ROM(0x10de, 0x0037, "nforce10", "nForce NVENET_10 Ethernet Controller"),
+PCI_ROM(0x10de, 0x0038, "nforce11", "nForce NVENET_11 Ethernet Controller"),
+};
+
+PCI_DRIVER ( forcedeth_driver, forcedeth_nics, PCI_NO_CLASS );
+
+DRIVER ( "forcedeth", nic_driver, pci_driver, forcedeth_driver,
+ forcedeth_probe, forcedeth_disable );
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * c-indent-level: 8
+ * tab-width: 8
+ * End:
+ */