Google Git
Sign in
kernel / pub / scm / linux / kernel / git / davem / netdev-vger-cvs / 80048cfb639d5a43a554f7d7aa1be0152ab24d55 / . / drivers / net / wan / lmc / lmc_main.c
blob: 4812d8400809ce229d2fb561bfaeacce4a194e70 [file] [log] [blame]
/*
* 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 General 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/slab.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/delay.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 <net/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
#include <linux/module.h>
#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);
MODULE_LICENSE("GPL");
#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 net_device_stats *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 interrupts 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 (!capable(CAP_NET_ADMIN)) {
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 (!capable(CAP_NET_ADMIN)) {
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 (!capable(CAP_NET_ADMIN)){
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 (!capable(CAP_NET_ADMIN)){
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 (!capable(CAP_NET_ADMIN)){
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 (!capable(CAP_NET_ADMIN)){
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;
}
if(copy_from_user(data, xc.data, xc.len))
{
kfree(data);
ret = -ENOMEM;
break;
}
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 programming 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 programming 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: Reprogramming FAILED. Needs to be reprogrammed. (corrupted data)\n", dev->name);
}
else if((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_DP) == 0){
printk(KERN_WARNING "%s: Reprogramming FAILED. Needs to be reprogrammed. (done)\n", dev->name);
}
else {
printk(KERN_DEBUG "%s: Done reprogramming 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");
spin_unlock_irqrestore(&sc->lmc_lock, flags);
return;
}
/* Make sure the tx jabber and rx watchdog are off,
* and the transmit and receive 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
* interrupt handler, 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
*/
dev_alloc_name(dev, "hdlc%d");
#else
/*
* GCOM uses LMC vendor name so that clients can know which card
* to attach to.
*/
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;
unsigned long pci_ioaddr;
unsigned int pci_irq_line;
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){
struct pci_dev *pdev;
/* 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
*/
pdev = pci_find_slot (pci_bus, pci_device_fn);
if (!pdev) break;
if (pci_enable_device(pdev))
break;
vendor = pdev->vendor;
device = pdev->device;
pci_irq_line = pdev->irq;
pci_ioaddr = pci_resource_start (pdev, 0);
subvendor = pdev->subsystem_vendor;
subdevice = pdev->subsystem_device;
pci_set_master (pdev);
/*
* 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 Receive 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 interrupts 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 interrupt 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 interrupt");
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 interrupts
*/
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");
}
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++;
sc->stats.rx_bytes += len;
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);
/* Transferred to 21140 below */
}
else {
/*
* We've run out of memory, stop trying to allocate
* memory and exit the interrupt 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 net_device_stats *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 net_device_stats *) &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 receive 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 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