patch-2.3.99-pre6 linux/drivers/net/wan/lmc/lmc_main.c
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- Lines: 2487
- Date:
Tue Apr 25 17:52:01 2000
- Orig file:
v2.3.99-pre5/linux/drivers/net/wan/lmc/lmc_main.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.99-pre5/linux/drivers/net/wan/lmc/lmc_main.c linux/drivers/net/wan/lmc/lmc_main.c
@@ -0,0 +1,2486 @@
+ /*
+ * Copyright (c) 1997-2000 LAN Media Corporation (LMC)
+ * All rights reserved. www.lanmedia.com
+ *
+ * This code is written by:
+ * Andrew Stanley-Jones (asj@cban.com)
+ * Rob Braun (bbraun@vix.com),
+ * Michael Graff (explorer@vix.com) and
+ * Matt Thomas (matt@3am-software.com).
+ *
+ * With Help By:
+ * David Boggs
+ * Ron Crane
+ * Allan Cox
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU Public License version 2, incorporated herein by reference.
+ *
+ * Driver for the LanMedia LMC5200, LMC5245, LMC1000, LMC1200 cards.
+ *
+ * To control link specific options lmcctl is required.
+ * It can be obtained from ftp.lanmedia.com.
+ *
+ * Linux driver notes:
+ * Linux uses the device struct lmc_private to pass private information
+ * arround.
+ *
+ * The initialization portion of this driver (the lmc_reset() and the
+ * lmc_dec_reset() functions, as well as the led controls and the
+ * lmc_initcsrs() functions.
+ *
+ * The watchdog function runs every second and checks to see if
+ * we still have link, and that the timing source is what we expected
+ * it to be. If link is lost, the interface is marked down, and
+ * we no longer can transmit.
+ *
+ */
+
+/* $Id: lmc_main.c,v 1.36 2000/04/11 05:25:25 asj Exp $ */
+
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/ptrace.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/malloc.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <asm/segment.h>
+#include <linux/init.h>
+
+#if LINUX_VERSION_CODE < 0x20155
+#include <linux/bios32.h>
+#endif
+
+#include <linux/in.h>
+#include <linux/if_arp.h>
+#include <asm/processor.h> /* Processor type for cache alignment. */
+#include <asm/bitops.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include "../syncppp.h"
+#include <linux/inet.h>
+
+#if LINUX_VERSION_CODE >= 0x20200
+#include <asm/uaccess.h>
+//#include <asm/spinlock.h>
+#else /* 2.0 kernel */
+#define ARPHRD_HDLC 513
+#endif
+
+#ifdef MODULE
+#ifdef MODVERSIONS
+#include <linux/modversions.h>
+#endif
+#include <linux/module.h>
+#else
+#define MOD_INC_USE_COUNT
+#define MOD_DEC_USE_COUNT
+#endif
+
+#define DRIVER_MAJOR_VERSION 1
+#define DRIVER_MINOR_VERSION 34
+#define DRIVER_SUB_VERSION 0
+
+#define DRIVER_VERSION ((DRIVER_MAJOR_VERSION << 8) + DRIVER_MINOR_VERSION)
+
+#include "lmc_ver.h"
+#include "lmc.h"
+#include "lmc_var.h"
+#include "lmc_ioctl.h"
+#include "lmc_debug.h"
+#include "lmc_proto.h"
+
+
+static int Lmc_Count = 0;
+static struct net_device *Lmc_root_dev = NULL;
+static u8 cards_found = 0;
+
+static int lmc_first_load = 0;
+
+int LMC_PKT_BUF_SZ = 1542;
+
+#ifdef MODULE
+static struct pci_device_id lmc_pci_tbl[] __devinitdata = {
+ { 0x1011, 0x009, 0x1379, PCI_ANY_ID, 0, 0, 0},
+ { 0 },
+};
+
+MODULE_DEVICE_TABLE(pci, lmc_pci_tbl);
+#endif
+
+
+int lmc_probe_fake(struct net_device *dev);
+static struct net_device *lmc_probe1(struct net_device *dev, unsigned long ioaddr, unsigned int irq,
+ int chip_id, int subdevice, int board_idx);
+static int lmc_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static int lmc_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static int lmc_rx (struct net_device *dev);
+static int lmc_open(struct net_device *dev);
+static int lmc_close(struct net_device *dev);
+static struct enet_statistics *lmc_get_stats(struct net_device *dev);
+static void lmc_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
+static int lmc_set_config(struct net_device *dev, struct ifmap *map);
+static void lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base, size_t csr_size);
+static void lmc_softreset(lmc_softc_t * const);
+static void lmc_running_reset(struct net_device *dev);
+static int lmc_ifdown(struct net_device * const);
+static void lmc_watchdog(unsigned long data);
+static int lmc_init(struct net_device * const);
+static void lmc_reset(lmc_softc_t * const sc);
+static void lmc_dec_reset(lmc_softc_t * const sc);
+#if LINUX_VERSION_CODE >= 0x20363
+static void lmc_driver_timeout(struct net_device *dev);
+int lmc_setup(void);
+#endif
+
+
+/*
+ * linux reserves 16 device specific IOCTLs. We call them
+ * LMCIOC* to control various bits of our world.
+ */
+int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
+{
+ lmc_softc_t *sc;
+ lmc_ctl_t ctl;
+ int ret;
+ u_int16_t regVal;
+ unsigned long flags;
+
+ struct sppp *sp;
+
+ ret = -EOPNOTSUPP;
+
+ sc = dev->priv;
+
+ lmc_trace(dev, "lmc_ioctl in");
+
+ /*
+ * Most functions mess with the structure
+ * Disable interupts while we do the polling
+ */
+ spin_lock_irqsave(&sc->lmc_lock, flags);
+
+ switch (cmd) {
+ /*
+ * Return current driver state. Since we keep this up
+ * To date internally, just copy this out to the user.
+ */
+ case LMCIOCGINFO: /*fold01*/
+ LMC_COPY_TO_USER(ifr->ifr_data, &sc->ictl, sizeof (lmc_ctl_t));
+ ret = 0;
+ break;
+
+ case LMCIOCSINFO: /*fold01*/
+ sp = &((struct ppp_device *) dev)->sppp;
+ if (!suser ()) {
+ ret = -EPERM;
+ break;
+ }
+
+ if(dev->flags & IFF_UP){
+ ret = -EBUSY;
+ break;
+ }
+
+ LMC_COPY_FROM_USER(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t));
+
+ sc->lmc_media->set_status (sc, &ctl);
+
+ if(ctl.crc_length != sc->ictl.crc_length) {
+ sc->lmc_media->set_crc_length(sc, ctl.crc_length);
+ if (sc->ictl.crc_length == LMC_CTL_CRC_LENGTH_16)
+ sc->TxDescriptControlInit |= LMC_TDES_ADD_CRC_DISABLE;
+ else
+ sc->TxDescriptControlInit &= ~LMC_TDES_ADD_CRC_DISABLE;
+ }
+
+ if (ctl.keepalive_onoff == LMC_CTL_OFF)
+ sp->pp_flags &= ~PP_KEEPALIVE; /* Turn off */
+ else
+ sp->pp_flags |= PP_KEEPALIVE; /* Turn on */
+
+ ret = 0;
+ break;
+
+ case LMCIOCIFTYPE: /*fold01*/
+ {
+ u_int16_t old_type = sc->if_type;
+ u_int16_t new_type;
+
+ if (!suser ()) {
+ ret = -EPERM;
+ break;
+ }
+
+ LMC_COPY_FROM_USER(&new_type, ifr->ifr_data, sizeof(u_int16_t));
+
+
+ if (new_type == old_type)
+ {
+ ret = 0 ;
+ break; /* no change */
+ }
+
+ lmc_proto_close(sc);
+ lmc_proto_detach(sc);
+
+ sc->if_type = new_type;
+// lmc_proto_init(sc);
+ lmc_proto_attach(sc);
+ lmc_proto_open(sc);
+
+ ret = 0 ;
+ break ;
+ }
+
+ case LMCIOCGETXINFO: /*fold01*/
+ sc->lmc_xinfo.Magic0 = 0xBEEFCAFE;
+
+ sc->lmc_xinfo.PciCardType = sc->lmc_cardtype;
+ sc->lmc_xinfo.PciSlotNumber = 0;
+ sc->lmc_xinfo.DriverMajorVersion = DRIVER_MAJOR_VERSION;
+ sc->lmc_xinfo.DriverMinorVersion = DRIVER_MINOR_VERSION;
+ sc->lmc_xinfo.DriverSubVersion = DRIVER_SUB_VERSION;
+ sc->lmc_xinfo.XilinxRevisionNumber =
+ lmc_mii_readreg (sc, 0, 3) & 0xf;
+ sc->lmc_xinfo.MaxFrameSize = LMC_PKT_BUF_SZ;
+ sc->lmc_xinfo.link_status = sc->lmc_media->get_link_status (sc);
+ sc->lmc_xinfo.mii_reg16 = lmc_mii_readreg (sc, 0, 16);
+
+ sc->lmc_xinfo.Magic1 = 0xDEADBEEF;
+
+ LMC_COPY_TO_USER(ifr->ifr_data, &sc->lmc_xinfo,
+ sizeof (struct lmc_xinfo));
+ ret = 0;
+
+ break;
+
+ case LMCIOCGETLMCSTATS: /*fold01*/
+ if (sc->lmc_cardtype == LMC_CARDTYPE_T1){
+ lmc_mii_writereg (sc, 0, 17, T1FRAMER_FERR_LSB);
+ sc->stats.framingBitErrorCount +=
+ lmc_mii_readreg (sc, 0, 18) & 0xff;
+ lmc_mii_writereg (sc, 0, 17, T1FRAMER_FERR_MSB);
+ sc->stats.framingBitErrorCount +=
+ (lmc_mii_readreg (sc, 0, 18) & 0xff) << 8;
+ lmc_mii_writereg (sc, 0, 17, T1FRAMER_LCV_LSB);
+ sc->stats.lineCodeViolationCount +=
+ lmc_mii_readreg (sc, 0, 18) & 0xff;
+ lmc_mii_writereg (sc, 0, 17, T1FRAMER_LCV_MSB);
+ sc->stats.lineCodeViolationCount +=
+ (lmc_mii_readreg (sc, 0, 18) & 0xff) << 8;
+ lmc_mii_writereg (sc, 0, 17, T1FRAMER_AERR);
+ regVal = lmc_mii_readreg (sc, 0, 18) & 0xff;
+
+ sc->stats.lossOfFrameCount +=
+ (regVal & T1FRAMER_LOF_MASK) >> 4;
+ sc->stats.changeOfFrameAlignmentCount +=
+ (regVal & T1FRAMER_COFA_MASK) >> 2;
+ sc->stats.severelyErroredFrameCount +=
+ regVal & T1FRAMER_SEF_MASK;
+ }
+
+ LMC_COPY_TO_USER(ifr->ifr_data, &sc->stats,
+ sizeof (struct lmc_statistics));
+
+ ret = 0;
+ break;
+
+ case LMCIOCCLEARLMCSTATS: /*fold01*/
+ if (!suser ()){
+ ret = -EPERM;
+ break;
+ }
+
+ memset (&sc->stats, 0, sizeof (struct lmc_statistics));
+ sc->stats.check = STATCHECK;
+ sc->stats.version_size = (DRIVER_VERSION << 16) +
+ sizeof (struct lmc_statistics);
+ sc->stats.lmc_cardtype = sc->lmc_cardtype;
+ ret = 0;
+ break;
+
+ case LMCIOCSETCIRCUIT: /*fold01*/
+ if (!suser ()){
+ ret = -EPERM;
+ break;
+ }
+
+ if(dev->flags & IFF_UP){
+ ret = -EBUSY;
+ break;
+ }
+
+ LMC_COPY_FROM_USER(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t));
+ sc->lmc_media->set_circuit_type(sc, ctl.circuit_type);
+ sc->ictl.circuit_type = ctl.circuit_type;
+ ret = 0;
+
+ break;
+
+ case LMCIOCRESET: /*fold01*/
+ if (!suser ()){
+ ret = -EPERM;
+ break;
+ }
+
+ /* Reset driver and bring back to current state */
+ printk (" REG16 before reset +%04x\n", lmc_mii_readreg (sc, 0, 16));
+ lmc_running_reset (dev);
+ printk (" REG16 after reset +%04x\n", lmc_mii_readreg (sc, 0, 16));
+
+ LMC_EVENT_LOG(LMC_EVENT_FORCEDRESET, LMC_CSR_READ (sc, csr_status), lmc_mii_readreg (sc, 0, 16));
+
+ ret = 0;
+ break;
+
+#ifdef DEBUG
+ case LMCIOCDUMPEVENTLOG:
+ LMC_COPY_TO_USER(ifr->ifr_data, &lmcEventLogIndex, sizeof (u32));
+ LMC_COPY_TO_USER(ifr->ifr_data + sizeof (u32), lmcEventLogBuf, sizeof (lmcEventLogBuf));
+
+ ret = 0;
+ break;
+#endif /* end ifdef _DBG_EVENTLOG */
+ case LMCIOCT1CONTROL: /*fold01*/
+ if (sc->lmc_cardtype != LMC_CARDTYPE_T1){
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ break;
+ case LMCIOCXILINX: /*fold01*/
+ {
+ struct lmc_xilinx_control xc; /*fold02*/
+
+ if (!suser ()){
+ ret = -EPERM;
+ break;
+ }
+
+ /*
+ * Stop the xwitter whlie we restart the hardware
+ */
+ LMC_XMITTER_BUSY(dev);
+
+ LMC_COPY_FROM_USER(&xc, ifr->ifr_data, sizeof (struct lmc_xilinx_control));
+ switch(xc.command){
+ case lmc_xilinx_reset: /*fold02*/
+ {
+ u16 mii;
+ mii = lmc_mii_readreg (sc, 0, 16);
+
+ /*
+ * Make all of them 0 and make input
+ */
+ lmc_gpio_mkinput(sc, 0xff);
+
+ /*
+ * make the reset output
+ */
+ lmc_gpio_mkoutput(sc, LMC_GEP_RESET);
+
+ /*
+ * RESET low to force configuration. This also forces
+ * the transmitter clock to be internal, but we expect to reset
+ * that later anyway.
+ */
+
+ sc->lmc_gpio &= ~LMC_GEP_RESET;
+ LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+
+ /*
+ * hold for more than 10 microseconds
+ */
+ udelay(50);
+
+ sc->lmc_gpio |= LMC_GEP_RESET;
+ LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+
+ /*
+ * stop driving Xilinx-related signals
+ */
+ lmc_gpio_mkinput(sc, 0xff);
+
+ /* Reset the frammer hardware */
+ sc->lmc_media->set_link_status (sc, 1);
+ sc->lmc_media->set_status (sc, NULL);
+// lmc_softreset(sc);
+
+ {
+ int i;
+ for(i = 0; i < 5; i++){
+ lmc_led_on(sc, LMC_DS3_LED0);
+ mdelay(100);
+ lmc_led_off(sc, LMC_DS3_LED0);
+ lmc_led_on(sc, LMC_DS3_LED1);
+ mdelay(100);
+ lmc_led_off(sc, LMC_DS3_LED1);
+ lmc_led_on(sc, LMC_DS3_LED3);
+ mdelay(100);
+ lmc_led_off(sc, LMC_DS3_LED3);
+ lmc_led_on(sc, LMC_DS3_LED2);
+ mdelay(100);
+ lmc_led_off(sc, LMC_DS3_LED2);
+ }
+ }
+
+
+
+ ret = 0x0;
+
+ }
+
+ break;
+ case lmc_xilinx_load_prom: /*fold02*/
+ {
+ u16 mii;
+ int timeout = 500000;
+ mii = lmc_mii_readreg (sc, 0, 16);
+
+ /*
+ * Make all of them 0 and make input
+ */
+ lmc_gpio_mkinput(sc, 0xff);
+
+ /*
+ * make the reset output
+ */
+ lmc_gpio_mkoutput(sc, LMC_GEP_DP | LMC_GEP_RESET);
+
+ /*
+ * RESET low to force configuration. This also forces
+ * the transmitter clock to be internal, but we expect to reset
+ * that later anyway.
+ */
+
+ sc->lmc_gpio &= ~(LMC_GEP_RESET | LMC_GEP_DP);
+ LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+
+ /*
+ * hold for more than 10 microseconds
+ */
+ udelay(50);
+
+ sc->lmc_gpio |= LMC_GEP_DP | LMC_GEP_RESET;
+ LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+ /*
+ * busy wait for the chip to reset
+ */
+ while( (LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0 &&
+ (timeout-- > 0))
+ ;
+
+
+ /*
+ * stop driving Xilinx-related signals
+ */
+ lmc_gpio_mkinput(sc, 0xff);
+
+ ret = 0x0;
+
+
+ break;
+
+ }
+
+ case lmc_xilinx_load: /*fold02*/
+ {
+ char *data;
+ int pos;
+ int timeout = 500000;
+
+ if(xc.data == 0x0){
+ ret = -EINVAL;
+ break;
+ }
+
+ data = kmalloc(xc.len, GFP_KERNEL);
+ if(data == 0x0){
+ printk(KERN_WARNING "%s: Failed to allocate memory for copy\n", dev->name);
+ ret = -ENOMEM;
+ break;
+ }
+
+ LMC_COPY_FROM_USER(data, xc.data, xc.len);
+
+ printk("%s: Starting load of data Len: %d at 0x%p == 0x%p\n", dev->name, xc.len, xc.data, data);
+
+ lmc_gpio_mkinput(sc, 0xff);
+
+ /*
+ * Clear the Xilinx and start prgramming from the DEC
+ */
+
+ /*
+ * Set ouput as:
+ * Reset: 0 (active)
+ * DP: 0 (active)
+ * Mode: 1
+ *
+ */
+ sc->lmc_gpio = 0x00;
+ sc->lmc_gpio &= ~LMC_GEP_DP;
+ sc->lmc_gpio &= ~LMC_GEP_RESET;
+ sc->lmc_gpio |= LMC_GEP_MODE;
+ LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+ lmc_gpio_mkoutput(sc, LMC_GEP_MODE | LMC_GEP_DP | LMC_GEP_RESET);
+
+ /*
+ * Wait at least 10 us 20 to be safe
+ */
+ udelay(50);
+
+ /*
+ * Clear reset and activate programing lines
+ * Reset: Input
+ * DP: Input
+ * Clock: Output
+ * Data: Output
+ * Mode: Output
+ */
+ lmc_gpio_mkinput(sc, LMC_GEP_DP | LMC_GEP_RESET);
+
+ /*
+ * Set LOAD, DATA, Clock to 1
+ */
+ sc->lmc_gpio = 0x00;
+ sc->lmc_gpio |= LMC_GEP_MODE;
+ sc->lmc_gpio |= LMC_GEP_DATA;
+ sc->lmc_gpio |= LMC_GEP_CLK;
+ LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+ lmc_gpio_mkoutput(sc, LMC_GEP_DATA | LMC_GEP_CLK | LMC_GEP_MODE );
+
+ /*
+ * busy wait for the chip to reset
+ */
+ while( (LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0 &&
+ (timeout-- > 0))
+ ;
+
+ printk(KERN_DEBUG "%s: Waited %d for the Xilinx to clear it's memory\n", dev->name, 500000-timeout);
+
+ for(pos = 0; pos < xc.len; pos++){
+ switch(data[pos]){
+ case 0:
+ sc->lmc_gpio &= ~LMC_GEP_DATA; /* Data is 0 */
+ break;
+ case 1:
+ sc->lmc_gpio |= LMC_GEP_DATA; /* Data is 1 */
+ break;
+ default:
+ printk(KERN_WARNING "%s Bad data in xilinx programing data at %d, got %d wanted 0 or 1\n", dev->name, pos, data[pos]);
+ sc->lmc_gpio |= LMC_GEP_DATA; /* Assume it's 1 */
+ }
+ sc->lmc_gpio &= ~LMC_GEP_CLK; /* Clock to zero */
+ sc->lmc_gpio |= LMC_GEP_MODE;
+ LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+ udelay(1);
+
+ sc->lmc_gpio |= LMC_GEP_CLK; /* Put the clack back to one */
+ sc->lmc_gpio |= LMC_GEP_MODE;
+ LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+ udelay(1);
+ }
+ if((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_INIT) == 0){
+ printk(KERN_WARNING "%s: Reprograming FAILED. Needs to be reprogramed. (corrupted data)\n", dev->name);
+ }
+ else if((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_DP) == 0){
+ printk(KERN_WARNING "%s: Reprograming FAILED. Needs to be reprogramed. (done)\n", dev->name);
+ }
+ else {
+ printk(KERN_DEBUG "%s: Done reprograming Xilinx, %d bits, good luck!\n", dev->name, pos);
+ }
+
+ lmc_gpio_mkinput(sc, 0xff);
+
+ sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET;
+ lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+
+ sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET;
+ lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+
+ kfree(data);
+
+ ret = 0;
+
+ break;
+ }
+ default: /*fold02*/
+ ret = -EBADE;
+ break;
+ }
+
+ LMC_XMITTER_FREE(dev);
+ sc->lmc_txfull = 0;
+
+ }
+ break;
+ default: /*fold01*/
+ /* If we don't know what to do, give the protocol a shot. */
+ ret = lmc_proto_ioctl (sc, ifr, cmd);
+ break;
+ }
+
+ spin_unlock_irqrestore(&sc->lmc_lock, flags); /*fold01*/
+
+ lmc_trace(dev, "lmc_ioctl out");
+
+ return ret;
+}
+
+
+/* the watchdog process that cruises around */
+static void lmc_watchdog (unsigned long data) /*fold00*/
+{
+ struct net_device *dev = (struct net_device *) data;
+ lmc_softc_t *sc;
+ int link_status;
+ u_int32_t ticks;
+ LMC_SPIN_FLAGS;
+
+ sc = dev->priv;
+
+ lmc_trace(dev, "lmc_watchdog in");
+
+ spin_lock_irqsave(&sc->lmc_lock, flags);
+
+ if(sc->check != 0xBEAFCAFE){
+ printk("LMC: Corrupt net_device stuct, breaking out\n");
+ return;
+ }
+
+
+ /* Make sure the tx jabber and rx watchdog are off,
+ * and the transmit and recieve processes are running.
+ */
+
+ LMC_CSR_WRITE (sc, csr_15, 0x00000011);
+ sc->lmc_cmdmode |= TULIP_CMD_TXRUN | TULIP_CMD_RXRUN;
+ LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode);
+
+ if (sc->lmc_ok == 0)
+ goto kick_timer;
+
+ LMC_EVENT_LOG(LMC_EVENT_WATCHDOG, LMC_CSR_READ (sc, csr_status), lmc_mii_readreg (sc, 0, 16));
+
+ /* --- begin time out check -----------------------------------
+ * check for a transmit interrupt timeout
+ * Has the packet xmt vs xmt serviced threshold been exceeded */
+ if (sc->lmc_taint_tx == sc->lastlmc_taint_tx &&
+ sc->stats.tx_packets > sc->lasttx_packets &&
+ sc->tx_TimeoutInd == 0)
+ {
+
+ /* wait for the watchdog to come around again */
+ sc->tx_TimeoutInd = 1;
+ }
+ else if (sc->lmc_taint_tx == sc->lastlmc_taint_tx &&
+ sc->stats.tx_packets > sc->lasttx_packets &&
+ sc->tx_TimeoutInd)
+ {
+
+ LMC_EVENT_LOG(LMC_EVENT_XMTINTTMO, LMC_CSR_READ (sc, csr_status), 0);
+
+ sc->tx_TimeoutDisplay = 1;
+ sc->stats.tx_TimeoutCnt++;
+
+ /* DEC chip is stuck, hit it with a RESET!!!! */
+ lmc_running_reset (dev);
+
+
+ /* look at receive & transmit process state to make sure they are running */
+ LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0);
+
+ /* look at: DSR - 02 for Reg 16
+ * CTS - 08
+ * DCD - 10
+ * RI - 20
+ * for Reg 17
+ */
+ LMC_EVENT_LOG(LMC_EVENT_RESET2, lmc_mii_readreg (sc, 0, 16), lmc_mii_readreg (sc, 0, 17));
+
+ /* reset the transmit timeout detection flag */
+ sc->tx_TimeoutInd = 0;
+ sc->lastlmc_taint_tx = sc->lmc_taint_tx;
+ sc->lasttx_packets = sc->stats.tx_packets;
+ }
+ else
+ {
+ sc->tx_TimeoutInd = 0;
+ sc->lastlmc_taint_tx = sc->lmc_taint_tx;
+ sc->lasttx_packets = sc->stats.tx_packets;
+ }
+
+ /* --- end time out check ----------------------------------- */
+
+
+ link_status = sc->lmc_media->get_link_status (sc);
+
+ /*
+ * hardware level link lost, but the interface is marked as up.
+ * Mark it as down.
+ */
+ if ((link_status == 0) && (sc->last_link_status != 0)) {
+ printk(KERN_WARNING "%s: hardware/physical link down\n", dev->name);
+ sc->last_link_status = 0;
+ /* lmc_reset (sc); Why reset??? The link can go down ok */
+
+ /* Inform the world that link has been lost */
+ dev->flags &= ~IFF_RUNNING;
+ }
+
+ /*
+ * hardware link is up, but the interface is marked as down.
+ * Bring it back up again.
+ */
+ if (link_status != 0 && sc->last_link_status == 0) {
+ printk(KERN_WARNING "%s: hardware/physical link up\n", dev->name);
+ sc->last_link_status = 1;
+ /* lmc_reset (sc); Again why reset??? */
+
+ /* Inform the world that link protocol is back up. */
+ dev->flags |= IFF_RUNNING;
+
+ /* Now we have to tell the syncppp that we had an outage
+ * and that it should deal. Calling sppp_reopen here
+ * should do the trick, but we may have to call sppp_close
+ * when the link goes down, and call sppp_open here.
+ * Subject to more testing.
+ * --bbraun
+ */
+
+ lmc_proto_reopen(sc);
+
+ }
+
+ /* Call media specific watchdog functions */
+ sc->lmc_media->watchdog(sc);
+
+ /*
+ * Poke the transmitter to make sure it
+ * never stops, even if we run out of mem
+ */
+ LMC_CSR_WRITE(sc, csr_rxpoll, 0);
+
+ /*
+ * Check for code that failed
+ * and try and fix it as appropriate
+ */
+ if(sc->failed_ring == 1){
+ /*
+ * Failed to setup the recv/xmit rin
+ * Try again
+ */
+ sc->failed_ring = 0;
+ lmc_softreset(sc);
+ }
+ if(sc->failed_recv_alloc == 1){
+ /*
+ * We failed to alloc mem in the
+ * interupt halder, go through the rings
+ * and rebuild them
+ */
+ sc->failed_recv_alloc = 0;
+ lmc_softreset(sc);
+ }
+
+
+ /*
+ * remember the timer value
+ */
+kick_timer:
+
+ ticks = LMC_CSR_READ (sc, csr_gp_timer);
+ LMC_CSR_WRITE (sc, csr_gp_timer, 0xffffffffUL);
+ sc->ictl.ticks = 0x0000ffff - (ticks & 0x0000ffff);
+
+ /*
+ * restart this timer.
+ */
+ sc->timer.expires = jiffies + (HZ);
+ add_timer (&sc->timer);
+
+ spin_unlock_irqrestore(&sc->lmc_lock, flags);
+
+ lmc_trace(dev, "lmc_watchdog out");
+
+}
+
+static int lmc_init(struct net_device * const dev) /*fold00*/
+{
+ lmc_trace(dev, "lmc_init in");
+ lmc_trace(dev, "lmc_init out");
+
+ return 0;
+}
+
+/* This initializes each card from lmc_probe() */
+static struct net_device *lmc_probe1 (struct net_device *dev, unsigned long ioaddr, unsigned int irq, /*fold00*/
+ int chip_id, int subdevice, int board_idx)
+{
+ lmc_softc_t *sc = NULL;
+ u_int16_t AdapModelNum;
+
+ /*
+ * Allocate our own device structure
+ */
+
+#if LINUX_VERSION_CODE < 0x20363
+ dev = kmalloc (sizeof (struct ppp_device)+8, GFP_KERNEL);
+#else
+ dev = kmalloc (sizeof (struct net_device)+8, GFP_KERNEL);
+#endif
+ if (dev == NULL){
+ printk (KERN_ERR "lmc: kmalloc for device failed\n");
+ return NULL;
+ }
+ memset (dev, 0, sizeof (struct net_device));
+
+#ifndef GCOM
+ /*
+ * Switch to common hdlc%d naming. We name by type not by vendor
+ */
+#if LINUX_VERSION_CODE < 0x20363
+ dev->name = ((char *) (dev)) + sizeof (struct ppp_device);
+#else
+ dev->name = ((char *) (dev)) + sizeof (struct net_device);
+#endif
+
+ dev_alloc_name(dev, "hdlc%d");
+#else
+ /*
+ * GCOM uses LMC vendor name so that clients can know which card
+ * to attach to.
+ */
+ dev->name = ((char *) (dev)) + sizeof (struct ppp_device);
+ dev_alloc_name(dev, "lmc%d");
+#endif
+
+ lmc_trace(dev, "lmc_probe1 in");
+
+ Lmc_Count++;
+
+ if(lmc_first_load == 0){
+ printk(KERN_INFO "Lan Media Corporation WAN Driver Version %d.%d.%d\n",DRIVER_MAJOR_VERSION, DRIVER_MINOR_VERSION,DRIVER_SUB_VERSION);
+ lmc_first_load = 1;
+ }
+
+ /*
+ * Allocate space for the private data structure
+ */
+
+ sc = kmalloc (sizeof (lmc_softc_t), GFP_KERNEL);
+ if (sc == NULL) {
+ printk (KERN_WARNING "%s: Cannot allocate memory for device state\n",
+ dev->name);
+ return (NULL);
+ }
+ memset (sc, 0, sizeof (lmc_softc_t));
+ dev->priv = sc;
+ sc->lmc_device = dev;
+ sc->name = dev->name;
+
+ /* Initialize the sppp layer */
+ /* An ioctl can cause a subsequent detach for raw frame interface */
+ sc->if_type = LMC_PPP;
+ sc->check = 0xBEAFCAFE;
+ dev->base_addr = ioaddr;
+ dev->irq = irq;
+ /*
+ * This will get the protocol layer ready and do any 1 time init's
+ * Must have a valid sc and dev structure
+ */
+ lmc_proto_init(sc);
+
+ lmc_proto_attach(sc);
+
+ /* Just fill in the entries for the device */
+
+ dev->init = lmc_init;
+ dev->type = ARPHRD_HDLC;
+ dev->hard_start_xmit = lmc_start_xmit;
+ dev->open = lmc_open;
+ dev->stop = lmc_close;
+ dev->get_stats = lmc_get_stats;
+ dev->do_ioctl = lmc_ioctl;
+ dev->set_config = lmc_set_config;
+#if LINUX_VERSION_CODE >= 0x20363
+ dev->tx_timeout = lmc_driver_timeout;
+ dev->watchdog_timeo = (HZ); /* 1 second */
+#endif
+
+ /*
+ * Why were we changing this???
+ dev->tx_queue_len = 100;
+ */
+
+ /* Init the spin lock so can call it latter */
+
+ spin_lock_init(&sc->lmc_lock);
+
+ LMC_SETUP_20_DEV;
+
+ printk ("%s: detected at %lx, irq %d\n", dev->name, ioaddr, dev->irq);
+
+ if (register_netdev (dev) != 0) {
+ printk (KERN_ERR "%s: register_netdev failed.\n", dev->name);
+ lmc_proto_detach(sc);
+ kfree (dev->priv);
+ kfree (dev);
+ return NULL;
+ }
+
+ /*
+ * Request the region of registers we need, so that
+ * later on, no one else will take our card away from
+ * us.
+ */
+ request_region (ioaddr, LMC_REG_RANGE, dev->name);
+
+ sc->lmc_cardtype = LMC_CARDTYPE_UNKNOWN;
+ sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT;
+
+ switch (subdevice) {
+ case PCI_PRODUCT_LMC_HSSI:
+ printk ("%s: LMC HSSI\n", dev->name);
+ sc->lmc_cardtype = LMC_CARDTYPE_HSSI;
+ sc->lmc_media = &lmc_hssi_media;
+ break;
+ case PCI_PRODUCT_LMC_DS3:
+ printk ("%s: LMC DS3\n", dev->name);
+ sc->lmc_cardtype = LMC_CARDTYPE_DS3;
+ sc->lmc_media = &lmc_ds3_media;
+ break;
+ case PCI_PRODUCT_LMC_SSI:
+ printk ("%s: LMC SSI\n", dev->name);
+ sc->lmc_cardtype = LMC_CARDTYPE_SSI;
+ sc->lmc_media = &lmc_ssi_media;
+ break;
+ case PCI_PRODUCT_LMC_T1:
+ printk ("%s: LMC T1\n", dev->name);
+ sc->lmc_cardtype = LMC_CARDTYPE_T1;
+ sc->lmc_media = &lmc_t1_media;
+ break;
+ default:
+ printk (KERN_WARNING "%s: LMC UNKOWN CARD!\n", dev->name);
+ break;
+ }
+
+ lmc_initcsrs (sc, dev->base_addr, 8);
+
+ lmc_gpio_mkinput (sc, 0xff);
+ sc->lmc_gpio = 0; /* drive no signals yet */
+
+ sc->lmc_media->defaults (sc);
+
+ sc->lmc_media->set_link_status (sc, LMC_LINK_UP);
+
+ /* verify that the PCI Sub System ID matches the Adapter Model number
+ * from the MII register
+ */
+ AdapModelNum = (lmc_mii_readreg (sc, 0, 3) & 0x3f0) >> 4;
+
+ if ((AdapModelNum == LMC_ADAP_T1
+ && subdevice == PCI_PRODUCT_LMC_T1) || /* detect LMC1200 */
+ (AdapModelNum == LMC_ADAP_SSI
+ && subdevice == PCI_PRODUCT_LMC_SSI) || /* detect LMC1000 */
+ (AdapModelNum == LMC_ADAP_DS3
+ && subdevice == PCI_PRODUCT_LMC_DS3) || /* detect LMC5245 */
+ (AdapModelNum == LMC_ADAP_HSSI
+ && subdevice == PCI_PRODUCT_LMC_HSSI))
+ { /* detect LMC5200 */
+
+ }
+ else {
+ printk ("%s: Model number (%d) miscompare for PCI Subsystem ID = 0x%04x\n",
+ dev->name, AdapModelNum, subdevice);
+// return (NULL);
+ }
+ /*
+ * reset clock
+ */
+ LMC_CSR_WRITE (sc, csr_gp_timer, 0xFFFFFFFFUL);
+
+ sc->board_idx = board_idx;
+
+ memset (&sc->stats, 0, sizeof (struct lmc_statistics));
+
+ sc->stats.check = STATCHECK;
+ sc->stats.version_size = (DRIVER_VERSION << 16) +
+ sizeof (struct lmc_statistics);
+ sc->stats.lmc_cardtype = sc->lmc_cardtype;
+
+ sc->lmc_ok = 0;
+ sc->last_link_status = 0;
+
+ lmc_trace(dev, "lmc_probe1 out");
+
+ return dev;
+}
+
+
+/* This is the entry point. This is what is called immediatly. */
+/* This goes out and finds the card */
+
+int lmc_probe_fake(struct net_device *dev) /*fold00*/
+{
+ lmc_probe(NULL);
+ /* Return 1 to unloaded bogus device */
+ return 1;
+}
+
+int lmc_probe (struct net_device *dev) /*fold00*/
+{
+ int pci_index = 0;
+#if LINUX_VERSION_CODE >= 0x20155
+ unsigned long pci_ioaddr;
+ unsigned short pci_command;
+ unsigned int pci_irq_line;
+#else
+ unsigned char pci_irq_line;
+ u32 pci_ioaddr;
+#endif
+ u16 vendor, subvendor, device, subdevice;
+ u32 foundaddr = 0;
+ unsigned char pci_bus, pci_device_fn;
+ u8 intcf = 0;
+
+ /* The card is only available on PCI, so if we don't have a
+ * PCI bus, we are in trouble.
+ */
+
+ if (!LMC_PCI_PRESENT()) {
+/* printk ("%s: We really want a pci bios!\n", dev->name);*/
+ return -1;
+ }
+ /* Loop basically until we don't find anymore. */
+ while (pci_index < 0xff){
+ /* The tulip is considered an ethernet class of card... */
+ if (pcibios_find_class (PCI_CLASS_NETWORK_ETHERNET << 8,
+ pci_index, &pci_bus,
+ &pci_device_fn) != PCIBIOS_SUCCESSFUL) {
+ /* No card found on this pass */
+ break;
+ }
+ /* Read the info we need to determine if this is
+ * our card or not
+ */
+#if LINUX_VERSION_CODE >= 0x20155
+ vendor = pci_find_slot (pci_bus, pci_device_fn)->vendor;
+ device = pci_find_slot (pci_bus, pci_device_fn)->device;
+ pci_irq_line = pci_find_slot (pci_bus, pci_device_fn)->irq;
+#if LINUX_VERSION_CODE < 0x20363
+ pci_ioaddr = pci_find_slot (pci_bus, pci_device_fn)->base_address[0];
+#else
+ pci_ioaddr = pci_resource_start (pci_find_slot (pci_bus, pci_device_fn), 0);
+#endif
+ pci_read_config_word (pci_find_slot (pci_bus, pci_device_fn),
+ PCI_SUBSYSTEM_VENDOR_ID, &subvendor);
+ pci_read_config_word (pci_find_slot (pci_bus, pci_device_fn),
+ PCI_SUBSYSTEM_ID, &subdevice);
+ /*
+ * SPARC PCI Bios doesn't set the BUS Master bit, unlike intel
+ * Without it we won't do much packet work
+ * Do this to everyone
+ */
+ pci_read_config_word(pci_find_slot (pci_bus, pci_device_fn), PCI_COMMAND,
+ &pci_command);
+ pci_command |= PCI_COMMAND_MASTER;
+ pci_write_config_word(pci_find_slot (pci_bus, pci_device_fn), PCI_COMMAND,
+ pci_command);
+#else
+ pcibios_read_config_word (pci_bus, pci_device_fn,
+ PCI_VENDOR_ID, &vendor);
+ pcibios_read_config_word (pci_bus, pci_device_fn,
+ PCI_DEVICE_ID, &device);
+ pcibios_read_config_byte (pci_bus, pci_device_fn,
+ PCI_INTERRUPT_LINE, &pci_irq_line);
+ pcibios_read_config_dword(pci_bus, pci_device_fn,
+ PCI_BASE_ADDRESS_0, &pci_ioaddr);
+ pcibios_read_config_word (pci_bus, pci_device_fn,
+ PCI_SUBSYSTEM_VENDOR_ID, &subvendor);
+ pcibios_read_config_word (pci_bus, pci_device_fn,
+ PCI_SUBSYSTEM_ID, &subdevice);
+#endif
+
+ /* Align the io address on the 32 bit boundry just in case */
+ pci_ioaddr &= ~3;
+
+ /*
+ * Make sure it's the correct card. CHECK SUBVENDOR ID!
+ * There are lots of tulip's out there.
+ * Also check the region of registers we will soon be
+ * poking, to make sure no one else has reserved them.
+ * This prevents taking someone else's device.
+ *
+ * Check either the subvendor or the subdevice, some systems reverse
+ * the setting in the bois, seems to be version and arch dependant?
+ * Fix the two variables
+ *
+ */
+ if (!(check_region (pci_ioaddr, LMC_REG_RANGE)) &&
+ (vendor == CORRECT_VENDOR_ID) &&
+ (device == CORRECT_DEV_ID) &&
+ ((subvendor == PCI_VENDOR_LMC) || (subdevice == PCI_VENDOR_LMC))){
+ struct net_device *cur, *prev = NULL;
+
+ /* Fix the error, exchange the two values */
+ if(subdevice == PCI_VENDOR_LMC){
+ subdevice = subvendor;
+ subvendor = PCI_VENDOR_LMC ;
+ }
+
+ /* Make the call to actually setup this card */
+ dev = lmc_probe1 (dev, pci_ioaddr, pci_irq_line,
+ device, subdevice, cards_found);
+ if (dev == NULL) {
+ printk ("lmc_probe: lmc_probe1 failed\n");
+ goto lmc_probe_next_card;
+ }
+ /* insert the device into the chain of lmc devices */
+ for (cur = Lmc_root_dev;
+ cur != NULL;
+ cur = ((lmc_softc_t *) cur->priv)->next_module) {
+ prev = cur;
+ }
+
+ if (prev == NULL)
+ Lmc_root_dev = dev;
+ else
+ ((lmc_softc_t *) prev->priv)->next_module = dev;
+
+ ((lmc_softc_t *) dev->priv)->next_module = NULL;
+ /* end insert */
+
+ foundaddr = dev->base_addr;
+
+ cards_found++;
+ intcf++;
+ }
+ lmc_probe_next_card:
+ pci_index++;
+ }
+
+ if (cards_found < 1)
+ return -1;
+
+#if LINUX_VERSION_CODE >= 0x20200
+ return foundaddr;
+#else
+ return 0;
+#endif
+}
+
+/* After this is called, packets can be sent.
+ * Does not initialize the addresses
+ */
+static int lmc_open (struct net_device *dev) /*fold00*/
+{
+ lmc_softc_t *sc = dev->priv;
+
+ lmc_trace(dev, "lmc_open in");
+
+ lmc_led_on(sc, LMC_DS3_LED0);
+
+ lmc_dec_reset (sc);
+ lmc_reset (sc);
+
+ LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0);
+ LMC_EVENT_LOG(LMC_EVENT_RESET2,
+ lmc_mii_readreg (sc, 0, 16),
+ lmc_mii_readreg (sc, 0, 17));
+
+
+ if (sc->lmc_ok){
+ lmc_trace(dev, "lmc_open lmc_ok out");
+ return (0);
+ }
+
+ lmc_softreset (sc);
+
+ /* Since we have to use PCI bus, this should work on x86,alpha,ppc */
+ if (request_irq (dev->irq, &lmc_interrupt, SA_SHIRQ, dev->name, dev)){
+ printk(KERN_WARNING "%s: could not get irq: %d\n", dev->name, dev->irq);
+ lmc_trace(dev, "lmc_open irq failed out");
+ return -EAGAIN;
+ }
+ sc->got_irq = 1;
+
+ /* Assert Terminal Active */
+ sc->lmc_miireg16 |= LMC_MII16_LED_ALL;
+ sc->lmc_media->set_link_status (sc, LMC_LINK_UP);
+
+ /*
+ * reset to last state.
+ */
+ sc->lmc_media->set_status (sc, NULL);
+
+ /* setup default bits to be used in tulip_desc_t transmit descriptor
+ * -baz */
+ sc->TxDescriptControlInit = (
+ LMC_TDES_INTERRUPT_ON_COMPLETION
+ | LMC_TDES_FIRST_SEGMENT
+ | LMC_TDES_LAST_SEGMENT
+ | LMC_TDES_SECOND_ADDR_CHAINED
+ | LMC_TDES_DISABLE_PADDING
+ );
+
+ if (sc->ictl.crc_length == LMC_CTL_CRC_LENGTH_16) {
+ /* disable 32 bit CRC generated by ASIC */
+ sc->TxDescriptControlInit |= LMC_TDES_ADD_CRC_DISABLE;
+ }
+ sc->lmc_media->set_crc_length(sc, sc->ictl.crc_length);
+ /* Acknoledge the Terminal Active and light LEDs */
+
+ /* dev->flags |= IFF_UP; */
+
+ lmc_proto_open(sc);
+
+ dev->do_ioctl = lmc_ioctl;
+
+
+ LMC_XMITTER_INIT(dev);
+
+#if LINUX_VERSION_CODE < 0x20363
+ dev->start = 1;
+#endif
+
+ sc->stats.tx_tbusy0++ ;
+
+ MOD_INC_USE_COUNT;
+
+ /*
+ * select what interrupts we want to get
+ */
+ sc->lmc_intrmask = 0;
+ /* Should be using the default interrupt mask defined in the .h file. */
+ sc->lmc_intrmask |= (TULIP_STS_NORMALINTR
+ | TULIP_STS_RXINTR
+ | TULIP_STS_TXINTR
+ | TULIP_STS_ABNRMLINTR
+ | TULIP_STS_SYSERROR
+ | TULIP_STS_TXSTOPPED
+ | TULIP_STS_TXUNDERFLOW
+ | TULIP_STS_RXSTOPPED
+ | TULIP_STS_RXNOBUF
+ );
+ LMC_CSR_WRITE (sc, csr_intr, sc->lmc_intrmask);
+
+ sc->lmc_cmdmode |= TULIP_CMD_TXRUN;
+ sc->lmc_cmdmode |= TULIP_CMD_RXRUN;
+ LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode);
+
+ sc->lmc_ok = 1; /* Run watchdog */
+
+ /*
+ * Set the if up now - pfb
+ */
+
+ sc->last_link_status = 1;
+
+ /*
+ * Setup a timer for the watchdog on probe, and start it running.
+ * Since lmc_ok == 0, it will be a NOP for now.
+ */
+ init_timer (&sc->timer);
+ sc->timer.expires = jiffies + HZ;
+ sc->timer.data = (unsigned long) dev;
+ sc->timer.function = &lmc_watchdog;
+ add_timer (&sc->timer);
+
+ lmc_trace(dev, "lmc_open out");
+
+ return (0);
+}
+
+/* Total reset to compensate for the AdTran DSU doing bad things
+ * under heavy load
+ */
+
+static void lmc_running_reset (struct net_device *dev) /*fold00*/
+{
+
+ lmc_softc_t *sc = (lmc_softc_t *) dev->priv;
+
+ lmc_trace(dev, "lmc_runnig_reset in");
+
+ /* stop interrupts */
+ /* Clear the interrupt mask */
+ LMC_CSR_WRITE (sc, csr_intr, 0x00000000);
+
+ lmc_dec_reset (sc);
+ lmc_reset (sc);
+ lmc_softreset (sc);
+ /* sc->lmc_miireg16 |= LMC_MII16_LED_ALL; */
+ sc->lmc_media->set_link_status (sc, 1);
+ sc->lmc_media->set_status (sc, NULL);
+
+ //dev->flags |= IFF_RUNNING;
+
+ LMC_XMITTER_FREE(dev);
+
+ sc->lmc_txfull = 0;
+ sc->stats.tx_tbusy0++ ;
+
+ sc->lmc_intrmask = TULIP_DEFAULT_INTR_MASK;
+ LMC_CSR_WRITE (sc, csr_intr, sc->lmc_intrmask);
+
+ sc->lmc_cmdmode |= (TULIP_CMD_TXRUN | TULIP_CMD_RXRUN);
+ LMC_CSR_WRITE (sc, csr_command, sc->lmc_cmdmode);
+
+ lmc_trace(dev, "lmc_runnin_reset_out");
+}
+
+
+/* This is what is called when you ifconfig down a device.
+ * This disables the timer for the watchdog and keepalives,
+ * and disables the irq for dev.
+ */
+static int lmc_close (struct net_device *dev) /*fold00*/
+{
+ /* not calling release_region() as we should */
+ lmc_softc_t *sc;
+
+ lmc_trace(dev, "lmc_close in");
+
+ sc = dev->priv;
+ sc->lmc_ok = 0;
+ sc->lmc_media->set_link_status (sc, 0);
+ del_timer (&sc->timer);
+ lmc_proto_close(sc);
+ lmc_ifdown (dev);
+
+ lmc_trace(dev, "lmc_close out");
+
+ return 0;
+}
+
+/* Ends the transfer of packets */
+/* When the interface goes down, this is called */
+static int lmc_ifdown (struct net_device *dev) /*fold00*/
+{
+ lmc_softc_t *sc = dev->priv;
+ u32 csr6;
+ int i;
+
+ lmc_trace(dev, "lmc_ifdown in");
+
+ /* Don't let anything else go on right now */
+ // dev->start = 0;
+ LMC_XMITTER_BUSY(dev);
+ sc->stats.tx_tbusy1++ ;
+
+ /* stop interrupts */
+ /* Clear the interrupt mask */
+ LMC_CSR_WRITE (sc, csr_intr, 0x00000000);
+
+ /* Stop Tx and Rx on the chip */
+ csr6 = LMC_CSR_READ (sc, csr_command);
+ csr6 &= ~LMC_DEC_ST; /* Turn off the Transmission bit */
+ csr6 &= ~LMC_DEC_SR; /* Turn off the Recieve bit */
+ LMC_CSR_WRITE (sc, csr_command, csr6);
+
+ dev->flags &= ~IFF_RUNNING;
+
+ sc->stats.rx_missed_errors +=
+ LMC_CSR_READ (sc, csr_missed_frames) & 0xffff;
+
+ /* release the interrupt */
+ if(sc->got_irq == 1){
+ free_irq (dev->irq, dev);
+ sc->got_irq = 0;
+ }
+
+ /* free skbuffs in the Rx queue */
+ for (i = 0; i < LMC_RXDESCS; i++)
+ {
+ struct sk_buff *skb = sc->lmc_rxq[i];
+ sc->lmc_rxq[i] = 0;
+ sc->lmc_rxring[i].status = 0;
+ sc->lmc_rxring[i].length = 0;
+ sc->lmc_rxring[i].buffer1 = 0xDEADBEEF;
+ if (skb != NULL)
+ {
+ LMC_SKB_FREE(skb, 1);
+ LMC_DEV_KFREE_SKB (skb);
+ }
+ sc->lmc_rxq[i] = NULL;
+ }
+
+ for (i = 0; i < LMC_TXDESCS; i++)
+ {
+ if (sc->lmc_txq[i] != NULL)
+ LMC_DEV_KFREE_SKB (sc->lmc_txq[i]);
+ sc->lmc_txq[i] = NULL;
+ }
+
+ lmc_led_off (sc, LMC_MII16_LED_ALL);
+
+ LMC_XMITTER_FREE(dev);
+ sc->stats.tx_tbusy0++ ;
+
+ lmc_trace(dev, "lmc_ifdown out");
+
+ MOD_DEC_USE_COUNT;
+ return 0;
+}
+
+/* Interrupt handling routine. This will take an incoming packet, or clean
+ * up after a trasmit.
+ */
+static void lmc_interrupt (int irq, void *dev_instance, struct pt_regs *regs) /*fold00*/
+{
+ struct net_device *dev = (struct net_device *) dev_instance;
+ lmc_softc_t *sc;
+ u32 csr;
+ int i;
+ s32 stat;
+ unsigned int badtx;
+ u32 firstcsr;
+ int max_work = LMC_RXDESCS;
+
+ lmc_trace(dev, "lmc_interrupt in");
+
+ sc = dev->priv;
+
+ spin_lock(&sc->lmc_lock);
+
+ /*
+ * Read the csr to find what interupts we have (if any)
+ */
+ csr = LMC_CSR_READ (sc, csr_status);
+
+ /*
+ * Make sure this is our interrupt
+ */
+ if ( ! (csr & sc->lmc_intrmask)) {
+ goto lmc_int_fail_out;
+ }
+
+ firstcsr = csr;
+
+ /* always go through this loop at least once */
+ while (csr & sc->lmc_intrmask) {
+ /*
+ * Clear interupt bits, we handle all case below
+ */
+ LMC_CSR_WRITE (sc, csr_status, csr);
+
+ /*
+ * One of
+ * - Transmit process timed out CSR5<1>
+ * - Transmit jabber timeout CSR5<3>
+ * - Transmit underflow CSR5<5>
+ * - Transmit Receiver buffer unavailable CSR5<7>
+ * - Receive process stopped CSR5<8>
+ * - Receive watchdog timeout CSR5<9>
+ * - Early transmit interrupt CSR5<10>
+ *
+ * Is this really right? Should we do a running reset for jabber?
+ * (being a WAN card and all)
+ */
+ if (csr & TULIP_STS_ABNRMLINTR){
+ lmc_running_reset (dev);
+ break;
+ }
+
+ if (csr & TULIP_STS_RXINTR){
+ lmc_trace(dev, "rx interupt");
+ lmc_rx (dev);
+
+ }
+ if (csr & (TULIP_STS_TXINTR | TULIP_STS_TXNOBUF | TULIP_STS_TXSTOPPED)) {
+
+ int n_compl = 0 ;
+ /* reset the transmit timeout detection flag -baz */
+ sc->stats.tx_NoCompleteCnt = 0;
+
+ badtx = sc->lmc_taint_tx;
+ i = badtx % LMC_TXDESCS;
+
+ while ((badtx < sc->lmc_next_tx)) {
+ stat = sc->lmc_txring[i].status;
+
+ LMC_EVENT_LOG (LMC_EVENT_XMTINT, stat,
+ sc->lmc_txring[i].length);
+ /*
+ * If bit 31 is 1 the tulip owns it break out of the loop
+ */
+ if (stat & 0x80000000)
+ break;
+
+ n_compl++ ; /* i.e., have an empty slot in ring */
+ /*
+ * If we have no skbuff or have cleared it
+ * Already continue to the next buffer
+ */
+ if (sc->lmc_txq[i] == NULL)
+ continue;
+
+ /*
+ * Check the total error summary to look for any errors
+ */
+ if (stat & 0x8000) {
+ sc->stats.tx_errors++;
+ if (stat & 0x4104)
+ sc->stats.tx_aborted_errors++;
+ if (stat & 0x0C00)
+ sc->stats.tx_carrier_errors++;
+ if (stat & 0x0200)
+ sc->stats.tx_window_errors++;
+ if (stat & 0x0002)
+ sc->stats.tx_fifo_errors++;
+ }
+ else {
+
+#if LINUX_VERSION_CODE >= 0x20200
+ sc->stats.tx_bytes += sc->lmc_txring[i].length & 0x7ff;
+#endif
+
+ sc->stats.tx_packets++;
+ }
+
+ // LMC_DEV_KFREE_SKB (sc->lmc_txq[i]);
+ dev_kfree_skb_irq(sc->lmc_txq[i]);
+ sc->lmc_txq[i] = 0;
+
+ badtx++;
+ i = badtx % LMC_TXDESCS;
+ }
+
+ if (sc->lmc_next_tx - badtx > LMC_TXDESCS)
+ {
+ printk ("%s: out of sync pointer\n", dev->name);
+ badtx += LMC_TXDESCS;
+ }
+ LMC_EVENT_LOG(LMC_EVENT_TBUSY0, n_compl, 0);
+ sc->lmc_txfull = 0;
+ LMC_XMITTER_FREE(dev);
+ sc->stats.tx_tbusy0++ ;
+#if LINUX_VERSION_CODE < 0x20363
+ mark_bh (NET_BH); /* Tell Linux to give me more packets */
+#endif
+
+
+#ifdef DEBUG
+ sc->stats.dirtyTx = badtx;
+ sc->stats.lmc_next_tx = sc->lmc_next_tx;
+ sc->stats.lmc_txfull = sc->lmc_txfull;
+#if LINUX_VERSION_CODE < 0x20363
+ sc->stats.tbusy = dev->tbusy;
+#endif
+#endif
+ sc->lmc_taint_tx = badtx;
+
+ /*
+ * Why was there a break here???
+ */
+ } /* end handle transmit interrupt */
+
+ if (csr & TULIP_STS_SYSERROR) {
+ u32 error;
+ printk (KERN_WARNING "%s: system bus error csr: %#8.8x\n", dev->name, csr);
+ error = csr>>23 & 0x7;
+ switch(error){
+ case 0x000:
+ printk(KERN_WARNING "%s: Parity Fault (bad)\n", dev->name);
+ break;
+ case 0x001:
+ printk(KERN_WARNING "%s: Master Abort (naughty)\n", dev->name);
+ break;
+ case 0x010:
+ printk(KERN_WARNING "%s: Target Abort (not so naughty)\n", dev->name);
+ break;
+ default:
+ printk(KERN_WARNING "%s: This bus error code was supposed to be reserved!\n", dev->name);
+ }
+ lmc_dec_reset (sc);
+ lmc_reset (sc);
+ LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0);
+ LMC_EVENT_LOG(LMC_EVENT_RESET2,
+ lmc_mii_readreg (sc, 0, 16),
+ lmc_mii_readreg (sc, 0, 17));
+
+ }
+
+
+ if(max_work-- <= 0)
+ break;
+
+ /*
+ * Get current csr status to make sure
+ * we've cleared all interupts
+ */
+ csr = LMC_CSR_READ (sc, csr_status);
+ } /* end interrupt loop */
+ LMC_EVENT_LOG(LMC_EVENT_INT, firstcsr, csr);
+
+lmc_int_fail_out:
+
+ spin_unlock(&sc->lmc_lock);
+
+ lmc_trace(dev, "lmc_interrupt out");
+
+ return;
+}
+
+static int lmc_start_xmit (struct sk_buff *skb, struct net_device *dev) /*fold00*/
+{
+ lmc_softc_t *sc;
+ u32 flag;
+ int entry;
+ int ret = 0;
+ LMC_SPIN_FLAGS;
+
+ lmc_trace(dev, "lmc_start_xmit in");
+
+ sc = dev->priv;
+
+ spin_lock_irqsave(&sc->lmc_lock, flags);
+
+ /*
+ * If the transmitter is busy
+ * this must be the 5 second polling
+ * from the kernel which called us.
+ * Poke the chip and try to get it running
+ *
+ */
+#if LINUX_VERSION_CODE < 0x20363
+ if(dev->tbusy != 0){
+ u32 csr6;
+
+ printk("%s: Xmitter busy|\n", dev->name);
+
+ sc->stats.tx_tbusy_calls++ ;
+ if (jiffies - dev->trans_start < TX_TIMEOUT) {
+ ret = 1;
+ goto lmc_start_xmit_bug_out;
+ }
+
+ /*
+ * Chip seems to have locked up
+ * Reset it
+ * This whips out all our decriptor
+ * table and starts from scartch
+ */
+
+ LMC_EVENT_LOG(LMC_EVENT_XMTPRCTMO,
+ LMC_CSR_READ (sc, csr_status),
+ sc->stats.tx_ProcTimeout);
+
+ lmc_running_reset (dev);
+
+ LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0);
+ LMC_EVENT_LOG(LMC_EVENT_RESET2,
+ lmc_mii_readreg (sc, 0, 16),
+ lmc_mii_readreg (sc, 0, 17));
+
+ /* restart the tx processes */
+ csr6 = LMC_CSR_READ (sc, csr_command);
+ LMC_CSR_WRITE (sc, csr_command, csr6 | 0x0002);
+ LMC_CSR_WRITE (sc, csr_command, csr6 | 0x2002);
+
+ /* immediate transmit */
+ LMC_CSR_WRITE (sc, csr_txpoll, 0);
+
+ sc->stats.tx_errors++;
+ sc->stats.tx_ProcTimeout++; /* -baz */
+
+ dev->trans_start = jiffies;
+
+ ret = 1;
+ goto lmc_start_xmit_bug_out;
+ }
+#endif
+ /* normal path, tbusy known to be zero */
+
+ entry = sc->lmc_next_tx % LMC_TXDESCS;
+
+ sc->lmc_txq[entry] = skb;
+ sc->lmc_txring[entry].buffer1 = virt_to_bus (skb->data);
+
+ LMC_CONSOLE_LOG("xmit", skb->data, skb->len);
+
+#ifndef GCOM
+ /* If the queue is less than half full, don't interrupt */
+ if (sc->lmc_next_tx - sc->lmc_taint_tx < LMC_TXDESCS / 2)
+ {
+ /* Do not interrupt on completion of this packet */
+ flag = 0x60000000;
+ LMC_XMITTER_FREE(dev);
+ }
+ else if (sc->lmc_next_tx - sc->lmc_taint_tx == LMC_TXDESCS / 2)
+ {
+ /* This generates an interrupt on completion of this packet */
+ flag = 0xe0000000;
+ LMC_XMITTER_FREE(dev);
+ }
+ else if (sc->lmc_next_tx - sc->lmc_taint_tx < LMC_TXDESCS - 1)
+ {
+ /* Do not interrupt on completion of this packet */
+ flag = 0x60000000;
+ LMC_XMITTER_FREE(dev);
+ }
+ else
+ {
+ /* This generates an interrupt on completion of this packet */
+ flag = 0xe0000000;
+ sc->lmc_txfull = 1;
+ LMC_XMITTER_BUSY(dev);
+ }
+#else
+ flag = LMC_TDES_INTERRUPT_ON_COMPLETION;
+
+ if (sc->lmc_next_tx - sc->lmc_taint_tx >= LMC_TXDESCS - 1)
+ { /* ring full, go busy */
+ sc->lmc_txfull = 1;
+ LMC_XMITTER_BUSY(dev);
+ sc->stats.tx_tbusy1++ ;
+ LMC_EVENT_LOG(LMC_EVENT_TBUSY1, entry, 0);
+ }
+#endif
+
+
+ if (entry == LMC_TXDESCS - 1) /* last descriptor in ring */
+ flag |= LMC_TDES_END_OF_RING; /* flag as such for Tulip */
+
+ /* don't pad small packets either */
+ flag = sc->lmc_txring[entry].length = (skb->len) | flag |
+ sc->TxDescriptControlInit;
+
+ /* set the transmit timeout flag to be checked in
+ * the watchdog timer handler. -baz
+ */
+
+ sc->stats.tx_NoCompleteCnt++;
+ sc->lmc_next_tx++;
+
+ /* give ownership to the chip */
+ LMC_EVENT_LOG(LMC_EVENT_XMT, flag, entry);
+ sc->lmc_txring[entry].status = 0x80000000;
+
+ /* send now! */
+ LMC_CSR_WRITE (sc, csr_txpoll, 0);
+
+ dev->trans_start = jiffies;
+
+#if LINUX_VERSION_CODE < 0x20363
+lmc_start_xmit_bug_out:
+#endif
+
+ spin_unlock_irqrestore(&sc->lmc_lock, flags);
+
+ lmc_trace(dev, "lmc_start_xmit_out");
+ return ret;
+}
+
+
+static int lmc_rx (struct net_device *dev) /*fold00*/
+{
+ lmc_softc_t *sc;
+ int i;
+ int rx_work_limit = LMC_RXDESCS;
+ unsigned int next_rx;
+ int rxIntLoopCnt; /* debug -baz */
+ int localLengthErrCnt = 0;
+ long stat;
+ struct sk_buff *skb, *nsb;
+ u16 len;
+
+ lmc_trace(dev, "lmc_rx in");
+
+ sc = dev->priv;
+
+ lmc_led_on(sc, LMC_DS3_LED3);
+
+ rxIntLoopCnt = 0; /* debug -baz */
+
+ i = sc->lmc_next_rx % LMC_RXDESCS;
+ next_rx = sc->lmc_next_rx;
+
+ while (((stat = sc->lmc_rxring[i].status) & LMC_RDES_OWN_BIT) != DESC_OWNED_BY_DC21X4)
+ {
+ rxIntLoopCnt++; /* debug -baz */
+ len = ((stat & LMC_RDES_FRAME_LENGTH) >> RDES_FRAME_LENGTH_BIT_NUMBER);
+ if ((stat & 0x0300) != 0x0300) { /* Check first segment and last segment */
+ if ((stat & 0x0000ffff) != 0x7fff) {
+ /* Oversized frame */
+ sc->stats.rx_length_errors++;
+ goto skip_packet;
+ }
+ }
+
+ if(stat & 0x00000008){ /* Catch a dribbling bit error */
+ sc->stats.rx_errors++;
+ sc->stats.rx_frame_errors++;
+ goto skip_packet;
+ }
+
+
+ if(stat & 0x00000004){ /* Catch a CRC error by the Xilinx */
+ sc->stats.rx_errors++;
+ sc->stats.rx_crc_errors++;
+ goto skip_packet;
+ }
+
+
+ if (len > LMC_PKT_BUF_SZ){
+ sc->stats.rx_length_errors++;
+ localLengthErrCnt++;
+ goto skip_packet;
+ }
+
+ if (len < sc->lmc_crcSize + 2) {
+ sc->stats.rx_length_errors++;
+ sc->stats.rx_SmallPktCnt++;
+ localLengthErrCnt++;
+ goto skip_packet;
+ }
+
+ if(stat & 0x00004000){
+ printk(KERN_WARNING "%s: Receiver descriptor error, receiver out of sync?\n", dev->name);
+ }
+
+ len -= sc->lmc_crcSize;
+
+ skb = sc->lmc_rxq[i];
+
+ /*
+ * We ran out of memory at some point
+ * just allocate an skb buff and continue.
+ */
+
+ if(skb == 0x0){
+ nsb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2);
+ if (nsb) {
+ LMC_SKB_FREE(nsb, 1);
+ sc->lmc_rxq[i] = nsb;
+ nsb->dev = dev;
+ sc->lmc_rxring[i].buffer1 = virt_to_bus (nsb->tail);
+ }
+ sc->failed_recv_alloc = 1;
+ goto skip_packet;
+ }
+
+ dev->last_rx = jiffies;
+ sc->stats.rx_packets++;
+
+ LMC_CONSOLE_LOG("recv", skb->data, len);
+
+ /*
+ * I'm not sure of the sanity of this
+ * Packets could be arriving at a constant
+ * 44.210mbits/sec and we're going to copy
+ * them into a new buffer??
+ */
+
+ if(len > (LMC_MTU - (LMC_MTU>>2))){ /* len > LMC_MTU * 0.75 */
+ /*
+ * If it's a large packet don't copy it just hand it up
+ */
+ give_it_anyways:
+
+ sc->lmc_rxq[i] = 0x0;
+ sc->lmc_rxring[i].buffer1 = 0x0;
+
+ skb_put (skb, len);
+ skb->protocol = lmc_proto_type(sc, skb);
+ skb->protocol = htons(ETH_P_WAN_PPP);
+ skb->mac.raw = skb->data;
+// skb->nh.raw = skb->data;
+ skb->dev = dev;
+ lmc_proto_netif(sc, skb);
+
+ /*
+ * This skb will be destroyed by the upper layers, make a new one
+ */
+ nsb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2);
+ if (nsb) {
+ LMC_SKB_FREE(nsb, 1);
+ sc->lmc_rxq[i] = nsb;
+ nsb->dev = dev;
+ sc->lmc_rxring[i].buffer1 = virt_to_bus (nsb->tail);
+ /* Transfered to 21140 below */
+ }
+ else {
+ /*
+ * We've run out of memory, stop trying to allocate
+ * memory and exit the interupt handler
+ *
+ * The chip may run out of receivers and stop
+ * in which care we'll try to allocate the buffer
+ * again. (once a second)
+ */
+ sc->stats.rx_BuffAllocErr++;
+ LMC_EVENT_LOG(LMC_EVENT_RCVINT, stat, len);
+ sc->failed_recv_alloc = 1;
+ goto skip_out_of_mem;
+ }
+ }
+ else {
+ nsb = dev_alloc_skb(len);
+ if(!nsb) {
+ goto give_it_anyways;
+ }
+ memcpy(skb_put(nsb, len), skb->data, len);
+
+ nsb->protocol = lmc_proto_type(sc, skb);
+ nsb->mac.raw = nsb->data;
+// nsb->nh.raw = nsb->data;
+ nsb->dev = dev;
+ lmc_proto_netif(sc, nsb);
+ }
+
+ skip_packet:
+ LMC_EVENT_LOG(LMC_EVENT_RCVINT, stat, len);
+ sc->lmc_rxring[i].status = DESC_OWNED_BY_DC21X4;
+
+ sc->lmc_next_rx++;
+ i = sc->lmc_next_rx % LMC_RXDESCS;
+ rx_work_limit--;
+ if (rx_work_limit < 0)
+ break;
+ }
+
+ /* detect condition for LMC1000 where DSU cable attaches and fills
+ * descriptors with bogus packets
+ *
+ if (localLengthErrCnt > LMC_RXDESCS - 3) {
+ sc->stats.rx_BadPktSurgeCnt++;
+ LMC_EVENT_LOG(LMC_EVENT_BADPKTSURGE,
+ localLengthErrCnt,
+ sc->stats.rx_BadPktSurgeCnt);
+ } */
+
+ /* save max count of receive descriptors serviced */
+ if (rxIntLoopCnt > sc->stats.rxIntLoopCnt) {
+ sc->stats.rxIntLoopCnt = rxIntLoopCnt; /* debug -baz */
+ }
+
+#ifdef DEBUG
+ if (rxIntLoopCnt == 0)
+ {
+ for (i = 0; i < LMC_RXDESCS; i++)
+ {
+ if ((sc->lmc_rxring[i].status & LMC_RDES_OWN_BIT)
+ != DESC_OWNED_BY_DC21X4)
+ {
+ rxIntLoopCnt++;
+ }
+ }
+ LMC_EVENT_LOG(LMC_EVENT_RCVEND, rxIntLoopCnt, 0);
+ }
+#endif
+
+
+ lmc_led_off(sc, LMC_DS3_LED3);
+
+skip_out_of_mem:
+
+ lmc_trace(dev, "lmc_rx out");
+
+ return 0;
+}
+
+static struct enet_statistics *lmc_get_stats (struct net_device *dev) /*fold00*/
+{
+ lmc_softc_t *sc;
+ LMC_SPIN_FLAGS;
+
+ lmc_trace(dev, "lmc_get_stats in");
+
+ sc = dev->priv;
+
+ spin_lock_irqsave(&sc->lmc_lock, flags);
+
+ sc->stats.rx_missed_errors += LMC_CSR_READ (sc, csr_missed_frames) & 0xffff;
+
+ spin_unlock_irqrestore(&sc->lmc_lock, flags);
+
+ lmc_trace(dev, "lmc_get_stats out");
+
+ return (struct enet_statistics *) &sc->stats;
+}
+
+#ifdef MODULE
+
+int init_module (void) /*fold00*/
+{
+ printk ("lmc: module loaded\n");
+
+ /* Have lmc_probe search for all the cards, and allocate devices */
+ if (lmc_probe (NULL) < 0)
+ return -EIO;
+
+ return 0;
+}
+
+void cleanup_module (void) /*fold00*/
+{
+ struct net_device *dev, *next;
+ lmc_softc_t *sc;
+
+ /* we have no pointer to our devices, since they are all dynamically
+ * allocated. So, here we loop through all the network devices
+ * looking for ours. When found, dispose of them properly.
+ */
+
+ for (dev = Lmc_root_dev;
+ dev != NULL;
+ dev = next )
+ {
+
+ next = ((lmc_softc_t *) dev->priv)->next_module; /* get it now before we deallocate it */
+ printk ("%s: removing...\n", dev->name);
+
+ /* close the syncppp stuff, and release irq. Close is run on unreg net */
+ lmc_close (dev);
+ sc = dev->priv;
+ if (sc != NULL)
+ lmc_proto_detach(sc);
+
+ /* Remove the device from the linked list */
+ unregister_netdev (dev);
+
+ /* Let go of the io region */;
+ release_region (dev->base_addr, LMC_REG_RANGE);
+
+ /* free our allocated structures. */
+ kfree (dev->priv);
+ dev->priv = NULL;
+
+ kfree ((struct ppp_device *) dev);
+ dev = NULL;
+ }
+
+
+ Lmc_root_dev = NULL;
+ printk ("lmc module unloaded\n");
+}
+#endif
+
+unsigned lmc_mii_readreg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno) /*fold00*/
+{
+ int i;
+ int command = (0xf6 << 10) | (devaddr << 5) | regno;
+ int retval = 0;
+
+ lmc_trace(sc->lmc_device, "lmc_mii_readreg in");
+
+ LMC_MII_SYNC (sc);
+
+ lmc_trace(sc->lmc_device, "lmc_mii_readreg: done sync");
+
+ for (i = 15; i >= 0; i--)
+ {
+ int dataval = (command & (1 << i)) ? 0x20000 : 0;
+
+ LMC_CSR_WRITE (sc, csr_9, dataval);
+ lmc_delay ();
+ /* __SLOW_DOWN_IO; */
+ LMC_CSR_WRITE (sc, csr_9, dataval | 0x10000);
+ lmc_delay ();
+ /* __SLOW_DOWN_IO; */
+ }
+
+ lmc_trace(sc->lmc_device, "lmc_mii_readreg: done1");
+
+ for (i = 19; i > 0; i--)
+ {
+ LMC_CSR_WRITE (sc, csr_9, 0x40000);
+ lmc_delay ();
+ /* __SLOW_DOWN_IO; */
+ retval = (retval << 1) | ((LMC_CSR_READ (sc, csr_9) & 0x80000) ? 1 : 0);
+ LMC_CSR_WRITE (sc, csr_9, 0x40000 | 0x10000);
+ lmc_delay ();
+ /* __SLOW_DOWN_IO; */
+ }
+
+ lmc_trace(sc->lmc_device, "lmc_mii_readreg out");
+
+ return (retval >> 1) & 0xffff;
+}
+
+void lmc_mii_writereg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno, unsigned data) /*fold00*/
+{
+ int i = 32;
+ int command = (0x5002 << 16) | (devaddr << 23) | (regno << 18) | data;
+
+ lmc_trace(sc->lmc_device, "lmc_mii_writereg in");
+
+ LMC_MII_SYNC (sc);
+
+ i = 31;
+ while (i >= 0)
+ {
+ int datav;
+
+ if (command & (1 << i))
+ datav = 0x20000;
+ else
+ datav = 0x00000;
+
+ LMC_CSR_WRITE (sc, csr_9, datav);
+ lmc_delay ();
+ /* __SLOW_DOWN_IO; */
+ LMC_CSR_WRITE (sc, csr_9, (datav | 0x10000));
+ lmc_delay ();
+ /* __SLOW_DOWN_IO; */
+ i--;
+ }
+
+ i = 2;
+ while (i > 0)
+ {
+ LMC_CSR_WRITE (sc, csr_9, 0x40000);
+ lmc_delay ();
+ /* __SLOW_DOWN_IO; */
+ LMC_CSR_WRITE (sc, csr_9, 0x50000);
+ lmc_delay ();
+ /* __SLOW_DOWN_IO; */
+ i--;
+ }
+
+ lmc_trace(sc->lmc_device, "lmc_mii_writereg out");
+}
+
+static void lmc_softreset (lmc_softc_t * const sc) /*fold00*/
+{
+ int i;
+
+ lmc_trace(sc->lmc_device, "lmc_softreset in");
+
+ /* Initialize the recieve rings and buffers. */
+ sc->lmc_txfull = 0;
+ sc->lmc_next_rx = 0;
+ sc->lmc_next_tx = 0;
+ sc->lmc_taint_rx = 0;
+ sc->lmc_taint_tx = 0;
+
+ /*
+ * Setup each one of the receiver buffers
+ * allocate an skbuff for each one, setup the the descriptor table
+ * and point each buffer at the next one
+ */
+
+ for (i = 0; i < LMC_RXDESCS; i++)
+ {
+ struct sk_buff *skb;
+
+ if (sc->lmc_rxq[i] == NULL)
+ {
+ skb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2);
+ if(skb == NULL){
+ printk(KERN_WARNING "%s: Failed to allocate receiver ring, will try again\n", sc->name);
+ sc->failed_ring = 1;
+ break;
+ }
+ else{
+ sc->lmc_rxq[i] = skb;
+ }
+ }
+ else
+ {
+ skb = sc->lmc_rxq[i];
+ }
+
+ skb->dev = sc->lmc_device;
+ LMC_SKB_FREE(skb, 1);
+
+ /* owned by 21140 */
+ sc->lmc_rxring[i].status = 0x80000000;
+
+ /* used to be PKT_BUF_SZ now uses skb since we loose some to head room */
+ sc->lmc_rxring[i].length = skb->end - skb->data;
+
+ /* use to be tail which is dumb since you're thinking why write
+ * to the end of the packj,et but since there's nothing there tail == data
+ */
+ sc->lmc_rxring[i].buffer1 = virt_to_bus (skb->data);
+
+ /* This is fair since the structure is static and we have the next address */
+ sc->lmc_rxring[i].buffer2 = virt_to_bus (&sc->lmc_rxring[i + 1]);
+
+ }
+
+ /*
+ * Sets end of ring
+ */
+ sc->lmc_rxring[i - 1].length |= 0x02000000; /* Set end of buffers flag */
+ sc->lmc_rxring[i - 1].buffer2 = virt_to_bus (&sc->lmc_rxring[0]); /* Point back to the start */
+ LMC_CSR_WRITE (sc, csr_rxlist, virt_to_bus (sc->lmc_rxring)); /* write base address */
+
+
+ /* Initialize the transmit rings and buffers */
+ for (i = 0; i < LMC_TXDESCS; i++)
+ {
+ if (sc->lmc_txq[i] != NULL){ /* have buffer */
+ dev_kfree_skb(sc->lmc_txq[i]); /* free it */
+ sc->stats.tx_dropped++; /* We just dropped a packet */
+ }
+ sc->lmc_txq[i] = 0;
+ sc->lmc_txring[i].status = 0x00000000;
+ sc->lmc_txring[i].buffer2 = virt_to_bus (&sc->lmc_txring[i + 1]);
+ }
+ sc->lmc_txring[i - 1].buffer2 = virt_to_bus (&sc->lmc_txring[0]);
+ LMC_CSR_WRITE (sc, csr_txlist, virt_to_bus (sc->lmc_txring));
+
+ lmc_trace(sc->lmc_device, "lmc_softreset out");
+}
+
+static int lmc_set_config(struct net_device *dev, struct ifmap *map) /*fold00*/
+{
+ lmc_trace(dev, "lmc_set_config in");
+ lmc_trace(dev, "lmc_set_config out");
+ return -EOPNOTSUPP;
+}
+
+void lmc_gpio_mkinput(lmc_softc_t * const sc, u_int32_t bits) /*fold00*/
+{
+ lmc_trace(sc->lmc_device, "lmc_gpio_mkinput in");
+ sc->lmc_gpio_io &= ~bits;
+ LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io));
+ lmc_trace(sc->lmc_device, "lmc_gpio_mkinput out");
+}
+
+void lmc_gpio_mkoutput(lmc_softc_t * const sc, u_int32_t bits) /*fold00*/
+{
+ lmc_trace(sc->lmc_device, "lmc_gpio_mkoutput in");
+ sc->lmc_gpio_io |= bits;
+ LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io));
+ lmc_trace(sc->lmc_device, "lmc_gpio_mkoutput out");
+}
+
+void lmc_led_on(lmc_softc_t * const sc, u_int32_t led) /*fold00*/
+{
+ lmc_trace(sc->lmc_device, "lmc_led_on in");
+ if((~sc->lmc_miireg16) & led){ /* Already on! */
+ lmc_trace(sc->lmc_device, "lmc_led_on aon out");
+ return;
+ }
+
+ sc->lmc_miireg16 &= ~led;
+ lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+ lmc_trace(sc->lmc_device, "lmc_led_on out");
+}
+
+void lmc_led_off(lmc_softc_t * const sc, u_int32_t led) /*fold00*/
+{
+ lmc_trace(sc->lmc_device, "lmc_led_off in");
+ if(sc->lmc_miireg16 & led){ /* Already set don't do anything */
+ lmc_trace(sc->lmc_device, "lmc_led_off aoff out");
+ return;
+ }
+
+ sc->lmc_miireg16 |= led;
+ lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+ lmc_trace(sc->lmc_device, "lmc_led_off out");
+}
+
+static void lmc_reset(lmc_softc_t * const sc) /*fold00*/
+{
+ lmc_trace(sc->lmc_device, "lmc_reset in");
+ sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET;
+ lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+
+ sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET;
+ lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+
+ /*
+ * make some of the GPIO pins be outputs
+ */
+ lmc_gpio_mkoutput(sc, LMC_GEP_RESET);
+
+ /*
+ * RESET low to force state reset. This also forces
+ * the transmitter clock to be internal, but we expect to reset
+ * that later anyway.
+ */
+ sc->lmc_gpio &= ~(LMC_GEP_RESET);
+ LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+ /*
+ * hold for more than 10 microseconds
+ */
+ udelay(50);
+
+ /*
+ * stop driving Xilinx-related signals
+ */
+ lmc_gpio_mkinput(sc, LMC_GEP_RESET);
+
+ /*
+ * Call media specific init routine
+ */
+ sc->lmc_media->init(sc);
+
+ sc->stats.resetCount++;
+ lmc_trace(sc->lmc_device, "lmc_reset out");
+}
+
+static void lmc_dec_reset(lmc_softc_t * const sc) /*fold00*/
+{
+ u_int32_t val;
+ lmc_trace(sc->lmc_device, "lmc_dec_reset in");
+
+ /*
+ * disable all interrupts
+ */
+ sc->lmc_intrmask = 0;
+ LMC_CSR_WRITE(sc, csr_intr, sc->lmc_intrmask);
+
+ /*
+ * Reset the chip with a software reset command.
+ * Wait 10 microseconds (actually 50 PCI cycles but at
+ * 33MHz that comes to two microseconds but wait a
+ * bit longer anyways)
+ */
+ LMC_CSR_WRITE(sc, csr_busmode, TULIP_BUSMODE_SWRESET);
+ udelay(25);
+#ifdef __sparc__
+ sc->lmc_busmode = LMC_CSR_READ(sc, csr_busmode);
+ sc->lmc_busmode = 0x00100000;
+ sc->lmc_busmode &= ~TULIP_BUSMODE_SWRESET;
+ LMC_CSR_WRITE(sc, csr_busmode, sc->lmc_busmode);
+#endif
+ sc->lmc_cmdmode = LMC_CSR_READ(sc, csr_command);
+
+ /*
+ * We want:
+ * no ethernet address in frames we write
+ * disable padding (txdesc, padding disable)
+ * ignore runt frames (rdes0 bit 15)
+ * no receiver watchdog or transmitter jabber timer
+ * (csr15 bit 0,14 == 1)
+ * if using 16-bit CRC, turn off CRC (trans desc, crc disable)
+ */
+
+ sc->lmc_cmdmode |= ( TULIP_CMD_PROMISCUOUS
+ | TULIP_CMD_FULLDUPLEX
+ | TULIP_CMD_PASSBADPKT
+ | TULIP_CMD_NOHEARTBEAT
+ | TULIP_CMD_PORTSELECT
+ | TULIP_CMD_RECEIVEALL
+ | TULIP_CMD_MUSTBEONE
+ );
+ sc->lmc_cmdmode &= ~( TULIP_CMD_OPERMODE
+ | TULIP_CMD_THRESHOLDCTL
+ | TULIP_CMD_STOREFWD
+ | TULIP_CMD_TXTHRSHLDCTL
+ );
+
+ LMC_CSR_WRITE(sc, csr_command, sc->lmc_cmdmode);
+
+ /*
+ * disable receiver watchdog and transmit jabber
+ */
+ val = LMC_CSR_READ(sc, csr_sia_general);
+ val |= (TULIP_WATCHDOG_TXDISABLE | TULIP_WATCHDOG_RXDISABLE);
+ LMC_CSR_WRITE(sc, csr_sia_general, val);
+
+ lmc_trace(sc->lmc_device, "lmc_dec_reset out");
+}
+
+static void lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base, /*fold00*/
+ size_t csr_size)
+{
+ lmc_trace(sc->lmc_device, "lmc_initcsrs in");
+ sc->lmc_csrs.csr_busmode = csr_base + 0 * csr_size;
+ sc->lmc_csrs.csr_txpoll = csr_base + 1 * csr_size;
+ sc->lmc_csrs.csr_rxpoll = csr_base + 2 * csr_size;
+ sc->lmc_csrs.csr_rxlist = csr_base + 3 * csr_size;
+ sc->lmc_csrs.csr_txlist = csr_base + 4 * csr_size;
+ sc->lmc_csrs.csr_status = csr_base + 5 * csr_size;
+ sc->lmc_csrs.csr_command = csr_base + 6 * csr_size;
+ sc->lmc_csrs.csr_intr = csr_base + 7 * csr_size;
+ sc->lmc_csrs.csr_missed_frames = csr_base + 8 * csr_size;
+ sc->lmc_csrs.csr_9 = csr_base + 9 * csr_size;
+ sc->lmc_csrs.csr_10 = csr_base + 10 * csr_size;
+ sc->lmc_csrs.csr_11 = csr_base + 11 * csr_size;
+ sc->lmc_csrs.csr_12 = csr_base + 12 * csr_size;
+ sc->lmc_csrs.csr_13 = csr_base + 13 * csr_size;
+ sc->lmc_csrs.csr_14 = csr_base + 14 * csr_size;
+ sc->lmc_csrs.csr_15 = csr_base + 15 * csr_size;
+ lmc_trace(sc->lmc_device, "lmc_initcsrs out");
+}
+
+#if LINUX_VERSION_CODE >= 0x20363
+static void lmc_driver_timeout(struct net_device *dev) { /*fold00*/
+ lmc_softc_t *sc;
+ u32 csr6;
+ LMC_SPIN_FLAGS;
+
+ lmc_trace(dev, "lmc_driver_timeout in");
+
+ sc = dev->priv;
+
+ spin_lock_irqsave(&sc->lmc_lock, flags);
+
+ printk("%s: Xmitter busy|\n", dev->name);
+
+ sc->stats.tx_tbusy_calls++ ;
+ if (jiffies - dev->trans_start < TX_TIMEOUT) {
+ goto bug_out;
+ }
+
+ /*
+ * Chip seems to have locked up
+ * Reset it
+ * This whips out all our decriptor
+ * table and starts from scartch
+ */
+
+ LMC_EVENT_LOG(LMC_EVENT_XMTPRCTMO,
+ LMC_CSR_READ (sc, csr_status),
+ sc->stats.tx_ProcTimeout);
+
+ lmc_running_reset (dev);
+
+ LMC_EVENT_LOG(LMC_EVENT_RESET1, LMC_CSR_READ (sc, csr_status), 0);
+ LMC_EVENT_LOG(LMC_EVENT_RESET2,
+ lmc_mii_readreg (sc, 0, 16),
+ lmc_mii_readreg (sc, 0, 17));
+
+ /* restart the tx processes */
+ csr6 = LMC_CSR_READ (sc, csr_command);
+ LMC_CSR_WRITE (sc, csr_command, csr6 | 0x0002);
+ LMC_CSR_WRITE (sc, csr_command, csr6 | 0x2002);
+
+ /* immediate transmit */
+ LMC_CSR_WRITE (sc, csr_txpoll, 0);
+
+ sc->stats.tx_errors++;
+ sc->stats.tx_ProcTimeout++; /* -baz */
+
+ dev->trans_start = jiffies;
+
+bug_out:
+
+ spin_unlock_irqrestore(&sc->lmc_lock, flags);
+
+ lmc_trace(dev, "lmc_driver_timout out");
+
+
+}
+
+int lmc_setup(void) { /*FOLD00*/
+ return lmc_probe(NULL);
+}
+
+#endif
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)