1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2001 Vojtech Pavlik 4 * 5 * CATC EL1210A NetMate USB Ethernet driver 6 * 7 * Sponsored by SuSE 8 * 9 * Based on the work of 10 * Donald Becker 11 * 12 * Old chipset support added by Simon Evans <spse@secret.org.uk> 2002 13 * - adds support for Belkin F5U011 14 */ 15 16 /* 17 * 18 * Should you need to contact me, the author, you can do so either by 19 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail: 20 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 21 */ 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 DEBUG 37 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 49 MODULE_AUTHOR(DRIVER_AUTHOR); 50 MODULE_DESCRIPTION(DRIVER_DESC); 51 MODULE_LICENSE("GPL"); 52 53 static 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 71 enum 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 88 enum 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 }; 101 102 enum eth_stats { 103 TxSingleColl = 0x00, 104 TxMultiColl = 0x02, 105 TxExcessColl = 0x04, 106 RxFramErr = 0x06, 107 }; 108 109 enum op_mode_bits { 110 Op3MemWaits = 0x03, 111 OpLenInclude = 0x08, 112 OpRxMerge = 0x10, 113 OpTxMerge = 0x20, 114 OpWin95bugfix = 0x40, 115 OpLoopback = 0x80, 116 }; 117 118 enum 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 }; 126 127 enum led_values { 128 LEDFast = 0x01, 129 LEDSlow = 0x02, 130 LEDFlash = 0x03, 131 LEDPulse = 0x04, 132 LEDLink = 0x08, 133 }; 134 135 enum link_status { 136 LinkNoChange = 0, 137 LinkGood = 1, 138 LinkBad = 2 139 }; 140 141 /* 142 * The catc struct. 143 */ 144 145 #define CTRL_RUNNING 0 146 #define RX_RUNNING 1 147 #define TX_RUNNING 2 148 149 struct 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 */ 211 212 static 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 } 277 278 static 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 = 0, 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 } 337 resubmit: 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 */ 349 350 static 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 } 371 372 static 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 } 408 409 static 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 else 424 *(__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 } 449 450 static 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 */ 461 462 static 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 } 469 470 static 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 } 497 498 static 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 else 517 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 else 528 clear_bit(CTRL_RUNNING, &catc->flags); 529 530 spin_unlock_irqrestore(&catc->ctrl_lock, flags); 531 } 532 533 static 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 */ 571 572 static 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 } 602 603 static 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 */ 617 618 static 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 } 625 626 static 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 } 670 671 static void catc_get_drvinfo(struct net_device *dev, 672 struct ethtool_drvinfo *info) 673 { 674 struct catc *catc = netdev_priv(dev); 675 strlcpy(info->driver, driver_name, sizeof(info->driver)); 676 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version)); 677 usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info)); 678 } 679 680 static 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 } 703 704 static 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 */ 713 714 static 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 } 733 734 static 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 } 750 751 static 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 */ 765 766 static 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; 930 931 fail_clear_intfdata: 932 usb_set_intfdata(intf, NULL); 933 fail_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); 939 fail_mem: 940 kfree(macbuf); 941 error: 942 return ret; 943 } 944 945 static 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 */ 963 964 static 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 }; 970 971 MODULE_DEVICE_TABLE(usb, catc_id_table); 972 973 static 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 }; 980 981 module_usb_driver(catc_driver); 982