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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (c) 2001 Vojtech Pavlik4 *5 * CATC EL1210A NetMate USB Ethernet driver6 *7 * Sponsored by SuSE8 *9 * Based on the work of10 * Donald Becker11 *12 * Old chipset support added by Simon Evans <spse@secret.org.uk> 200213 * - adds support for Belkin F5U01114 */15 16/*17 *18 * Should you need to contact me, the author, you can do so either by19 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:20 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic21 */22 23#include <linux/module.h>24#include <linux/kernel.h>25#include <linux/string.h>26#include <linux/netdevice.h>27#include <linux/etherdevice.h>28#include <linux/skbuff.h>29#include <linux/spinlock.h>30#include <linux/ethtool.h>31#include <linux/crc32.h>32#include <linux/bitops.h>33#include <linux/gfp.h>34#include <linux/uaccess.h>35 36#undef DEBUG37 38#include <linux/usb.h>39 40/*41 * Version information.42 */43 44#define DRIVER_VERSION "v2.8"45#define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"46#define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver"47#define SHORT_DRIVER_DESC "EL1210A NetMate USB Ethernet"48 49MODULE_AUTHOR(DRIVER_AUTHOR);50MODULE_DESCRIPTION(DRIVER_DESC);51MODULE_LICENSE("GPL");52 53static const char driver_name[] = "catc";54 55/*56 * Some defines.57 */58 59#define STATS_UPDATE (HZ) /* Time between stats updates */60#define TX_TIMEOUT (5*HZ) /* Max time the queue can be stopped */61#define PKT_SZ 1536 /* Max Ethernet packet size */62#define RX_MAX_BURST 15 /* Max packets per rx buffer (> 0, < 16) */63#define TX_MAX_BURST 15 /* Max full sized packets per tx buffer (> 0) */64#define CTRL_QUEUE 16 /* Max control requests in flight (power of two) */65#define RX_PKT_SZ 1600 /* Max size of receive packet for F5U011 */66 67/*68 * Control requests.69 */70 71enum control_requests {72 ReadMem = 0xf1,73 GetMac = 0xf2,74 Reset = 0xf4,75 SetMac = 0xf5,76 SetRxMode = 0xf5, /* F5U011 only */77 WriteROM = 0xf8,78 SetReg = 0xfa,79 GetReg = 0xfb,80 WriteMem = 0xfc,81 ReadROM = 0xfd,82};83 84/*85 * Registers.86 */87 88enum register_offsets {89 TxBufCount = 0x20,90 RxBufCount = 0x21,91 OpModes = 0x22,92 TxQed = 0x23,93 RxQed = 0x24,94 MaxBurst = 0x25,95 RxUnit = 0x60,96 EthStatus = 0x61,97 StationAddr0 = 0x67,98 EthStats = 0x69,99 LEDCtrl = 0x81,100};101 102enum eth_stats {103 TxSingleColl = 0x00,104 TxMultiColl = 0x02,105 TxExcessColl = 0x04,106 RxFramErr = 0x06,107};108 109enum op_mode_bits {110 Op3MemWaits = 0x03,111 OpLenInclude = 0x08,112 OpRxMerge = 0x10,113 OpTxMerge = 0x20,114 OpWin95bugfix = 0x40,115 OpLoopback = 0x80,116};117 118enum rx_filter_bits {119 RxEnable = 0x01,120 RxPolarity = 0x02,121 RxForceOK = 0x04,122 RxMultiCast = 0x08,123 RxPromisc = 0x10,124 AltRxPromisc = 0x20, /* F5U011 uses different bit */125};126 127enum led_values {128 LEDFast = 0x01,129 LEDSlow = 0x02,130 LEDFlash = 0x03,131 LEDPulse = 0x04,132 LEDLink = 0x08,133};134 135enum link_status {136 LinkNoChange = 0,137 LinkGood = 1,138 LinkBad = 2139};140 141/*142 * The catc struct.143 */144 145#define CTRL_RUNNING 0146#define RX_RUNNING 1147#define TX_RUNNING 2148 149struct catc {150 struct net_device *netdev;151 struct usb_device *usbdev;152 153 unsigned long flags;154 155 unsigned int tx_ptr, tx_idx;156 unsigned int ctrl_head, ctrl_tail;157 spinlock_t tx_lock, ctrl_lock;158 159 u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)];160 u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)];161 u8 irq_buf[2];162 u8 ctrl_buf[64];163 struct usb_ctrlrequest ctrl_dr;164 165 struct timer_list timer;166 u8 stats_buf[8];167 u16 stats_vals[4];168 unsigned long last_stats;169 170 u8 multicast[64];171 172 struct ctrl_queue {173 u8 dir;174 u8 request;175 u16 value;176 u16 index;177 void *buf;178 int len;179 void (*callback)(struct catc *catc, struct ctrl_queue *q);180 } ctrl_queue[CTRL_QUEUE];181 182 struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb;183 184 u8 is_f5u011; /* Set if device is an F5U011 */185 u8 rxmode[2]; /* Used for F5U011 */186 atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */187};188 189/*190 * Useful macros.191 */192 193#define catc_get_mac(catc, mac) catc_ctrl_msg(catc, USB_DIR_IN, GetMac, 0, 0, mac, 6)194#define catc_reset(catc) catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0)195#define catc_set_reg(catc, reg, val) catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0)196#define catc_get_reg(catc, reg, buf) catc_ctrl_msg(catc, USB_DIR_IN, GetReg, 0, reg, buf, 1)197#define catc_write_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size)198#define catc_read_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_IN, ReadMem, 0, addr, buf, size)199 200#define f5u011_rxmode(catc, rxmode) catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2)201#define f5u011_rxmode_async(catc, rxmode) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL)202#define f5u011_mchash_async(catc, hash) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL)203 204#define catc_set_reg_async(catc, reg, val) catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL)205#define catc_get_reg_async(catc, reg, cb) catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb)206#define catc_write_mem_async(catc, addr, buf, size) catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL)207 208/*209 * Receive routines.210 */211 212static void catc_rx_done(struct urb *urb)213{214 struct catc *catc = urb->context;215 u8 *pkt_start = urb->transfer_buffer;216 struct sk_buff *skb;217 int pkt_len, pkt_offset = 0;218 int status = urb->status;219 220 if (!catc->is_f5u011) {221 clear_bit(RX_RUNNING, &catc->flags);222 pkt_offset = 2;223 }224 225 if (status) {226 dev_dbg(&urb->dev->dev, "rx_done, status %d, length %d\n",227 status, urb->actual_length);228 return;229 }230 231 do {232 if(!catc->is_f5u011) {233 pkt_len = le16_to_cpup((__le16*)pkt_start);234 if (pkt_len > urb->actual_length) {235 catc->netdev->stats.rx_length_errors++;236 catc->netdev->stats.rx_errors++;237 break;238 }239 } else {240 pkt_len = urb->actual_length;241 }242 243 if (!(skb = dev_alloc_skb(pkt_len)))244 return;245 246 skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len);247 skb_put(skb, pkt_len);248 249 skb->protocol = eth_type_trans(skb, catc->netdev);250 netif_rx(skb);251 252 catc->netdev->stats.rx_packets++;253 catc->netdev->stats.rx_bytes += pkt_len;254 255 /* F5U011 only does one packet per RX */256 if (catc->is_f5u011)257 break;258 pkt_start += (((pkt_len + 1) >> 6) + 1) << 6;259 260 } while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length);261 262 if (catc->is_f5u011) {263 if (atomic_read(&catc->recq_sz)) {264 int state;265 atomic_dec(&catc->recq_sz);266 netdev_dbg(catc->netdev, "getting extra packet\n");267 urb->dev = catc->usbdev;268 if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {269 netdev_dbg(catc->netdev,270 "submit(rx_urb) status %d\n", state);271 }272 } else {273 clear_bit(RX_RUNNING, &catc->flags);274 }275 }276}277 278static void catc_irq_done(struct urb *urb)279{280 struct catc *catc = urb->context;281 u8 *data = urb->transfer_buffer;282 int status = urb->status;283 unsigned int hasdata, linksts = LinkNoChange;284 int res;285 286 if (!catc->is_f5u011) {287 hasdata = data[1] & 0x80;288 if (data[1] & 0x40)289 linksts = LinkGood;290 else if (data[1] & 0x20)291 linksts = LinkBad;292 } else {293 hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff);294 if (data[0] == 0x90)295 linksts = LinkGood;296 else if (data[0] == 0xA0)297 linksts = LinkBad;298 }299 300 switch (status) {301 case 0: /* success */302 break;303 case -ECONNRESET: /* unlink */304 case -ENOENT:305 case -ESHUTDOWN:306 return;307 /* -EPIPE: should clear the halt */308 default: /* error */309 dev_dbg(&urb->dev->dev,310 "irq_done, status %d, data %02x %02x.\n",311 status, data[0], data[1]);312 goto resubmit;313 }314 315 if (linksts == LinkGood) {316 netif_carrier_on(catc->netdev);317 netdev_dbg(catc->netdev, "link ok\n");318 }319 320 if (linksts == LinkBad) {321 netif_carrier_off(catc->netdev);322 netdev_dbg(catc->netdev, "link bad\n");323 }324 325 if (hasdata) {326 if (test_and_set_bit(RX_RUNNING, &catc->flags)) {327 if (catc->is_f5u011)328 atomic_inc(&catc->recq_sz);329 } else {330 catc->rx_urb->dev = catc->usbdev;331 if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) {332 dev_err(&catc->usbdev->dev,333 "submit(rx_urb) status %d\n", res);334 }335 }336 }337resubmit:338 res = usb_submit_urb (urb, GFP_ATOMIC);339 if (res)340 dev_err(&catc->usbdev->dev,341 "can't resubmit intr, %s-%s, status %d\n",342 catc->usbdev->bus->bus_name,343 catc->usbdev->devpath, res);344}345 346/*347 * Transmit routines.348 */349 350static int catc_tx_run(struct catc *catc)351{352 int status;353 354 if (catc->is_f5u011)355 catc->tx_ptr = (catc->tx_ptr + 63) & ~63;356 357 catc->tx_urb->transfer_buffer_length = catc->tx_ptr;358 catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx];359 catc->tx_urb->dev = catc->usbdev;360 361 if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0)362 dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n",363 status);364 365 catc->tx_idx = !catc->tx_idx;366 catc->tx_ptr = 0;367 368 netif_trans_update(catc->netdev);369 return status;370}371 372static void catc_tx_done(struct urb *urb)373{374 struct catc *catc = urb->context;375 unsigned long flags;376 int r, status = urb->status;377 378 if (status == -ECONNRESET) {379 dev_dbg(&urb->dev->dev, "Tx Reset.\n");380 urb->status = 0;381 netif_trans_update(catc->netdev);382 catc->netdev->stats.tx_errors++;383 clear_bit(TX_RUNNING, &catc->flags);384 netif_wake_queue(catc->netdev);385 return;386 }387 388 if (status) {389 dev_dbg(&urb->dev->dev, "tx_done, status %d, length %d\n",390 status, urb->actual_length);391 return;392 }393 394 spin_lock_irqsave(&catc->tx_lock, flags);395 396 if (catc->tx_ptr) {397 r = catc_tx_run(catc);398 if (unlikely(r < 0))399 clear_bit(TX_RUNNING, &catc->flags);400 } else {401 clear_bit(TX_RUNNING, &catc->flags);402 }403 404 netif_wake_queue(catc->netdev);405 406 spin_unlock_irqrestore(&catc->tx_lock, flags);407}408 409static netdev_tx_t catc_start_xmit(struct sk_buff *skb,410 struct net_device *netdev)411{412 struct catc *catc = netdev_priv(netdev);413 unsigned long flags;414 int r = 0;415 char *tx_buf;416 417 spin_lock_irqsave(&catc->tx_lock, flags);418 419 catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;420 tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;421 if (catc->is_f5u011)422 *(__be16 *)tx_buf = cpu_to_be16(skb->len);423 else424 *(__le16 *)tx_buf = cpu_to_le16(skb->len);425 skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);426 catc->tx_ptr += skb->len + 2;427 428 if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {429 r = catc_tx_run(catc);430 if (r < 0)431 clear_bit(TX_RUNNING, &catc->flags);432 }433 434 if ((catc->is_f5u011 && catc->tx_ptr) ||435 (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))436 netif_stop_queue(netdev);437 438 spin_unlock_irqrestore(&catc->tx_lock, flags);439 440 if (r >= 0) {441 catc->netdev->stats.tx_bytes += skb->len;442 catc->netdev->stats.tx_packets++;443 }444 445 dev_kfree_skb(skb);446 447 return NETDEV_TX_OK;448}449 450static void catc_tx_timeout(struct net_device *netdev, unsigned int txqueue)451{452 struct catc *catc = netdev_priv(netdev);453 454 dev_warn(&netdev->dev, "Transmit timed out.\n");455 usb_unlink_urb(catc->tx_urb);456}457 458/*459 * Control messages.460 */461 462static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)463{464 int retval = usb_control_msg(catc->usbdev,465 dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0),466 request, 0x40 | dir, value, index, buf, len, 1000);467 return retval < 0 ? retval : 0;468}469 470static void catc_ctrl_run(struct catc *catc)471{472 struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail;473 struct usb_device *usbdev = catc->usbdev;474 struct urb *urb = catc->ctrl_urb;475 struct usb_ctrlrequest *dr = &catc->ctrl_dr;476 int status;477 478 dr->bRequest = q->request;479 dr->bRequestType = 0x40 | q->dir;480 dr->wValue = cpu_to_le16(q->value);481 dr->wIndex = cpu_to_le16(q->index);482 dr->wLength = cpu_to_le16(q->len);483 484 urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0);485 urb->transfer_buffer_length = q->len;486 urb->transfer_buffer = catc->ctrl_buf;487 urb->setup_packet = (void *) dr;488 urb->dev = usbdev;489 490 if (!q->dir && q->buf && q->len)491 memcpy(catc->ctrl_buf, q->buf, q->len);492 493 if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC)))494 dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n",495 status);496}497 498static void catc_ctrl_done(struct urb *urb)499{500 struct catc *catc = urb->context;501 struct ctrl_queue *q;502 unsigned long flags;503 int status = urb->status;504 505 if (status)506 dev_dbg(&urb->dev->dev, "ctrl_done, status %d, len %d.\n",507 status, urb->actual_length);508 509 spin_lock_irqsave(&catc->ctrl_lock, flags);510 511 q = catc->ctrl_queue + catc->ctrl_tail;512 513 if (q->dir) {514 if (q->buf && q->len)515 memcpy(q->buf, catc->ctrl_buf, q->len);516 else517 q->buf = catc->ctrl_buf;518 }519 520 if (q->callback)521 q->callback(catc, q);522 523 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);524 525 if (catc->ctrl_head != catc->ctrl_tail)526 catc_ctrl_run(catc);527 else528 clear_bit(CTRL_RUNNING, &catc->flags);529 530 spin_unlock_irqrestore(&catc->ctrl_lock, flags);531}532 533static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value,534 u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q))535{536 struct ctrl_queue *q;537 int retval = 0;538 unsigned long flags;539 540 spin_lock_irqsave(&catc->ctrl_lock, flags);541 542 q = catc->ctrl_queue + catc->ctrl_head;543 544 q->dir = dir;545 q->request = request;546 q->value = value;547 q->index = index;548 q->buf = buf;549 q->len = len;550 q->callback = callback;551 552 catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1);553 554 if (catc->ctrl_head == catc->ctrl_tail) {555 dev_err(&catc->usbdev->dev, "ctrl queue full\n");556 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1);557 retval = -1;558 }559 560 if (!test_and_set_bit(CTRL_RUNNING, &catc->flags))561 catc_ctrl_run(catc);562 563 spin_unlock_irqrestore(&catc->ctrl_lock, flags);564 565 return retval;566}567 568/*569 * Statistics.570 */571 572static void catc_stats_done(struct catc *catc, struct ctrl_queue *q)573{574 int index = q->index - EthStats;575 u16 data, last;576 577 catc->stats_buf[index] = *((char *)q->buf);578 579 if (index & 1)580 return;581 582 data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1];583 last = catc->stats_vals[index >> 1];584 585 switch (index) {586 case TxSingleColl:587 case TxMultiColl:588 catc->netdev->stats.collisions += data - last;589 break;590 case TxExcessColl:591 catc->netdev->stats.tx_aborted_errors += data - last;592 catc->netdev->stats.tx_errors += data - last;593 break;594 case RxFramErr:595 catc->netdev->stats.rx_frame_errors += data - last;596 catc->netdev->stats.rx_errors += data - last;597 break;598 }599 600 catc->stats_vals[index >> 1] = data;601}602 603static void catc_stats_timer(struct timer_list *t)604{605 struct catc *catc = from_timer(catc, t, timer);606 int i;607 608 for (i = 0; i < 8; i++)609 catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done);610 611 mod_timer(&catc->timer, jiffies + STATS_UPDATE);612}613 614/*615 * Receive modes. Broadcast, Multicast, Promisc.616 */617 618static void catc_multicast(const unsigned char *addr, u8 *multicast)619{620 u32 crc;621 622 crc = ether_crc_le(6, addr);623 multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);624}625 626static void catc_set_multicast_list(struct net_device *netdev)627{628 struct catc *catc = netdev_priv(netdev);629 struct netdev_hw_addr *ha;630 u8 broadcast[ETH_ALEN];631 u8 rx = RxEnable | RxPolarity | RxMultiCast;632 633 eth_broadcast_addr(broadcast);634 memset(catc->multicast, 0, 64);635 636 catc_multicast(broadcast, catc->multicast);637 catc_multicast(netdev->dev_addr, catc->multicast);638 639 if (netdev->flags & IFF_PROMISC) {640 memset(catc->multicast, 0xff, 64);641 rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc;642 }643 644 if (netdev->flags & IFF_ALLMULTI) {645 memset(catc->multicast, 0xff, 64);646 } else {647 netdev_for_each_mc_addr(ha, netdev) {648 u32 crc = ether_crc_le(6, ha->addr);649 if (!catc->is_f5u011) {650 catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7);651 } else {652 catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7);653 }654 }655 }656 if (!catc->is_f5u011) {657 catc_set_reg_async(catc, RxUnit, rx);658 catc_write_mem_async(catc, 0xfa80, catc->multicast, 64);659 } else {660 f5u011_mchash_async(catc, catc->multicast);661 if (catc->rxmode[0] != rx) {662 catc->rxmode[0] = rx;663 netdev_dbg(catc->netdev,664 "Setting RX mode to %2.2X %2.2X\n",665 catc->rxmode[0], catc->rxmode[1]);666 f5u011_rxmode_async(catc, catc->rxmode);667 }668 }669}670 671static void catc_get_drvinfo(struct net_device *dev,672 struct ethtool_drvinfo *info)673{674 struct catc *catc = netdev_priv(dev);675 strscpy(info->driver, driver_name, sizeof(info->driver));676 strscpy(info->version, DRIVER_VERSION, sizeof(info->version));677 usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info));678}679 680static int catc_get_link_ksettings(struct net_device *dev,681 struct ethtool_link_ksettings *cmd)682{683 struct catc *catc = netdev_priv(dev);684 if (!catc->is_f5u011)685 return -EOPNOTSUPP;686 687 ethtool_link_ksettings_zero_link_mode(cmd, supported);688 ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);689 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);690 691 ethtool_link_ksettings_zero_link_mode(cmd, advertising);692 ethtool_link_ksettings_add_link_mode(cmd, advertising, 10baseT_Half);693 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);694 695 cmd->base.speed = SPEED_10;696 cmd->base.duplex = DUPLEX_HALF;697 cmd->base.port = PORT_TP;698 cmd->base.phy_address = 0;699 cmd->base.autoneg = AUTONEG_DISABLE;700 701 return 0;702}703 704static const struct ethtool_ops ops = {705 .get_drvinfo = catc_get_drvinfo,706 .get_link = ethtool_op_get_link,707 .get_link_ksettings = catc_get_link_ksettings,708};709 710/*711 * Open, close.712 */713 714static int catc_open(struct net_device *netdev)715{716 struct catc *catc = netdev_priv(netdev);717 int status;718 719 catc->irq_urb->dev = catc->usbdev;720 if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) {721 dev_err(&catc->usbdev->dev, "submit(irq_urb) status %d\n",722 status);723 return -1;724 }725 726 netif_start_queue(netdev);727 728 if (!catc->is_f5u011)729 mod_timer(&catc->timer, jiffies + STATS_UPDATE);730 731 return 0;732}733 734static int catc_stop(struct net_device *netdev)735{736 struct catc *catc = netdev_priv(netdev);737 738 netif_stop_queue(netdev);739 740 if (!catc->is_f5u011)741 del_timer_sync(&catc->timer);742 743 usb_kill_urb(catc->rx_urb);744 usb_kill_urb(catc->tx_urb);745 usb_kill_urb(catc->irq_urb);746 usb_kill_urb(catc->ctrl_urb);747 748 return 0;749}750 751static const struct net_device_ops catc_netdev_ops = {752 .ndo_open = catc_open,753 .ndo_stop = catc_stop,754 .ndo_start_xmit = catc_start_xmit,755 756 .ndo_tx_timeout = catc_tx_timeout,757 .ndo_set_rx_mode = catc_set_multicast_list,758 .ndo_set_mac_address = eth_mac_addr,759 .ndo_validate_addr = eth_validate_addr,760};761 762/*763 * USB probe, disconnect.764 */765 766static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id)767{768 struct device *dev = &intf->dev;769 struct usb_device *usbdev = interface_to_usbdev(intf);770 struct net_device *netdev;771 struct catc *catc;772 u8 broadcast[ETH_ALEN];773 u8 *macbuf;774 int pktsz, ret = -ENOMEM;775 776 macbuf = kmalloc(ETH_ALEN, GFP_KERNEL);777 if (!macbuf)778 goto error;779 780 if (usb_set_interface(usbdev,781 intf->altsetting->desc.bInterfaceNumber, 1)) {782 dev_err(dev, "Can't set altsetting 1.\n");783 ret = -EIO;784 goto fail_mem;785 }786 787 netdev = alloc_etherdev(sizeof(struct catc));788 if (!netdev)789 goto fail_mem;790 791 catc = netdev_priv(netdev);792 793 netdev->netdev_ops = &catc_netdev_ops;794 netdev->watchdog_timeo = TX_TIMEOUT;795 netdev->ethtool_ops = &ops;796 797 catc->usbdev = usbdev;798 catc->netdev = netdev;799 800 spin_lock_init(&catc->tx_lock);801 spin_lock_init(&catc->ctrl_lock);802 803 timer_setup(&catc->timer, catc_stats_timer, 0);804 805 catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);806 catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL);807 catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL);808 catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL);809 if ((!catc->ctrl_urb) || (!catc->tx_urb) ||810 (!catc->rx_urb) || (!catc->irq_urb)) {811 dev_err(&intf->dev, "No free urbs available.\n");812 ret = -ENOMEM;813 goto fail_free;814 }815 816 /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */817 if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 &&818 le16_to_cpu(usbdev->descriptor.idProduct) == 0xa &&819 le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) {820 dev_dbg(dev, "Testing for f5u011\n");821 catc->is_f5u011 = 1;822 atomic_set(&catc->recq_sz, 0);823 pktsz = RX_PKT_SZ;824 } else {825 pktsz = RX_MAX_BURST * (PKT_SZ + 2);826 }827 828 usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0),829 NULL, NULL, 0, catc_ctrl_done, catc);830 831 usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, 1),832 NULL, 0, catc_tx_done, catc);833 834 usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, 1),835 catc->rx_buf, pktsz, catc_rx_done, catc);836 837 usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, 2),838 catc->irq_buf, 2, catc_irq_done, catc, 1);839 840 if (!catc->is_f5u011) {841 u32 *buf;842 int i;843 844 dev_dbg(dev, "Checking memory size\n");845 846 buf = kmalloc(4, GFP_KERNEL);847 if (!buf) {848 ret = -ENOMEM;849 goto fail_free;850 }851 852 *buf = 0x12345678;853 catc_write_mem(catc, 0x7a80, buf, 4);854 *buf = 0x87654321;855 catc_write_mem(catc, 0xfa80, buf, 4);856 catc_read_mem(catc, 0x7a80, buf, 4);857 858 switch (*buf) {859 case 0x12345678:860 catc_set_reg(catc, TxBufCount, 8);861 catc_set_reg(catc, RxBufCount, 32);862 dev_dbg(dev, "64k Memory\n");863 break;864 default:865 dev_warn(&intf->dev,866 "Couldn't detect memory size, assuming 32k\n");867 fallthrough;868 case 0x87654321:869 catc_set_reg(catc, TxBufCount, 4);870 catc_set_reg(catc, RxBufCount, 16);871 dev_dbg(dev, "32k Memory\n");872 break;873 }874 875 kfree(buf);876 877 dev_dbg(dev, "Getting MAC from SEEROM.\n");878 879 catc_get_mac(catc, macbuf);880 eth_hw_addr_set(netdev, macbuf);881 882 dev_dbg(dev, "Setting MAC into registers.\n");883 884 for (i = 0; i < 6; i++)885 catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]);886 887 dev_dbg(dev, "Filling the multicast list.\n");888 889 eth_broadcast_addr(broadcast);890 catc_multicast(broadcast, catc->multicast);891 catc_multicast(netdev->dev_addr, catc->multicast);892 catc_write_mem(catc, 0xfa80, catc->multicast, 64);893 894 dev_dbg(dev, "Clearing error counters.\n");895 896 for (i = 0; i < 8; i++)897 catc_set_reg(catc, EthStats + i, 0);898 catc->last_stats = jiffies;899 900 dev_dbg(dev, "Enabling.\n");901 902 catc_set_reg(catc, MaxBurst, RX_MAX_BURST);903 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits);904 catc_set_reg(catc, LEDCtrl, LEDLink);905 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast);906 } else {907 dev_dbg(dev, "Performing reset\n");908 catc_reset(catc);909 catc_get_mac(catc, macbuf);910 eth_hw_addr_set(netdev, macbuf);911 912 dev_dbg(dev, "Setting RX Mode\n");913 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;914 catc->rxmode[1] = 0;915 f5u011_rxmode(catc, catc->rxmode);916 }917 dev_dbg(dev, "Init done.\n");918 printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n",919 netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate",920 usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr);921 usb_set_intfdata(intf, catc);922 923 SET_NETDEV_DEV(netdev, &intf->dev);924 ret = register_netdev(netdev);925 if (ret)926 goto fail_clear_intfdata;927 928 kfree(macbuf);929 return 0;930 931fail_clear_intfdata:932 usb_set_intfdata(intf, NULL);933fail_free:934 usb_free_urb(catc->ctrl_urb);935 usb_free_urb(catc->tx_urb);936 usb_free_urb(catc->rx_urb);937 usb_free_urb(catc->irq_urb);938 free_netdev(netdev);939fail_mem:940 kfree(macbuf);941error:942 return ret;943}944 945static void catc_disconnect(struct usb_interface *intf)946{947 struct catc *catc = usb_get_intfdata(intf);948 949 usb_set_intfdata(intf, NULL);950 if (catc) {951 unregister_netdev(catc->netdev);952 usb_free_urb(catc->ctrl_urb);953 usb_free_urb(catc->tx_urb);954 usb_free_urb(catc->rx_urb);955 usb_free_urb(catc->irq_urb);956 free_netdev(catc->netdev);957 }958}959 960/*961 * Module functions and tables.962 */963 964static const struct usb_device_id catc_id_table[] = {965 { USB_DEVICE(0x0423, 0xa) }, /* CATC Netmate, Belkin F5U011 */966 { USB_DEVICE(0x0423, 0xc) }, /* CATC Netmate II, Belkin F5U111 */967 { USB_DEVICE(0x08d1, 0x1) }, /* smartBridges smartNIC */968 { }969};970 971MODULE_DEVICE_TABLE(usb, catc_id_table);972 973static struct usb_driver catc_driver = {974 .name = driver_name,975 .probe = catc_probe,976 .disconnect = catc_disconnect,977 .id_table = catc_id_table,978 .disable_hub_initiated_lpm = 1,979};980 981module_usb_driver(catc_driver);982