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 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>" 41 #define DRIVER_DESC "CATC EL1210A NetMate USB Ethernet driver" 42 43 MODULE_AUTHOR(DRIVER_AUTHOR); 44 MODULE_DESCRIPTION(DRIVER_DESC); 45 MODULE_LICENSE("GPL"); 46 47 static const char driver_name[] = "catc"; 48 49 /* 50 * Some defines. 51 */ 52 53 #define STATS_UPDATE (HZ) /* Time between stats updates */ 54 #define TX_TIMEOUT (5*HZ) /* Max time the queue can be stopped */ 55 #define PKT_SZ 1536 /* Max Ethernet packet size */ 56 #define RX_MAX_BURST 15 /* Max packets per rx buffer (> 0, < 16) */ 57 #define TX_MAX_BURST 15 /* Max full sized packets per tx buffer (> 0) */ 58 #define CTRL_QUEUE 16 /* Max control requests in flight (power of two) */ 59 #define RX_PKT_SZ 1600 /* Max size of receive packet for F5U011 */ 60 61 /* 62 * USB endpoints. 63 */ 64 65 enum catc_usb_ep { 66 CATC_USB_EP_CONTROL = 0, 67 CATC_USB_EP_BULK = 1, 68 CATC_USB_EP_INT_IN = 2, 69 }; 70 71 /* 72 * Control requests. 73 */ 74 75 enum control_requests { 76 ReadMem = 0xf1, 77 GetMac = 0xf2, 78 Reset = 0xf4, 79 SetMac = 0xf5, 80 SetRxMode = 0xf5, /* F5U011 only */ 81 WriteROM = 0xf8, 82 SetReg = 0xfa, 83 GetReg = 0xfb, 84 WriteMem = 0xfc, 85 ReadROM = 0xfd, 86 }; 87 88 /* 89 * Registers. 90 */ 91 92 enum register_offsets { 93 TxBufCount = 0x20, 94 RxBufCount = 0x21, 95 OpModes = 0x22, 96 TxQed = 0x23, 97 RxQed = 0x24, 98 MaxBurst = 0x25, 99 RxUnit = 0x60, 100 EthStatus = 0x61, 101 StationAddr0 = 0x67, 102 EthStats = 0x69, 103 LEDCtrl = 0x81, 104 }; 105 106 enum eth_stats { 107 TxSingleColl = 0x00, 108 TxMultiColl = 0x02, 109 TxExcessColl = 0x04, 110 RxFramErr = 0x06, 111 }; 112 113 enum op_mode_bits { 114 Op3MemWaits = 0x03, 115 OpLenInclude = 0x08, 116 OpRxMerge = 0x10, 117 OpTxMerge = 0x20, 118 OpWin95bugfix = 0x40, 119 OpLoopback = 0x80, 120 }; 121 122 enum rx_filter_bits { 123 RxEnable = 0x01, 124 RxPolarity = 0x02, 125 RxForceOK = 0x04, 126 RxMultiCast = 0x08, 127 RxPromisc = 0x10, 128 AltRxPromisc = 0x20, /* F5U011 uses different bit */ 129 }; 130 131 enum led_values { 132 LEDFast = 0x01, 133 LEDSlow = 0x02, 134 LEDFlash = 0x03, 135 LEDPulse = 0x04, 136 LEDLink = 0x08, 137 }; 138 139 enum link_status { 140 LinkNoChange = 0, 141 LinkGood = 1, 142 LinkBad = 2 143 }; 144 145 /* 146 * The catc struct. 147 */ 148 149 #define CTRL_RUNNING 0 150 #define RX_RUNNING 1 151 #define TX_RUNNING 2 152 153 struct catc { 154 struct net_device *netdev; 155 struct usb_device *usbdev; 156 157 unsigned long flags; 158 159 unsigned int tx_ptr, tx_idx; 160 unsigned int ctrl_head, ctrl_tail; 161 spinlock_t tx_lock, ctrl_lock; 162 163 u8 tx_buf[2][TX_MAX_BURST * (PKT_SZ + 2)]; 164 u8 rx_buf[RX_MAX_BURST * (PKT_SZ + 2)]; 165 u8 irq_buf[2]; 166 u8 ctrl_buf[64]; 167 struct usb_ctrlrequest ctrl_dr; 168 169 struct timer_list timer; 170 u8 stats_buf[8]; 171 u16 stats_vals[4]; 172 unsigned long last_stats; 173 174 u8 multicast[64]; 175 176 struct ctrl_queue { 177 u8 dir; 178 u8 request; 179 u16 value; 180 u16 index; 181 void *buf; 182 int len; 183 void (*callback)(struct catc *catc, struct ctrl_queue *q); 184 } ctrl_queue[CTRL_QUEUE]; 185 186 struct urb *tx_urb, *rx_urb, *irq_urb, *ctrl_urb; 187 188 u8 is_f5u011; /* Set if device is an F5U011 */ 189 u8 rxmode[2]; /* Used for F5U011 */ 190 atomic_t recq_sz; /* Used for F5U011 - counter of waiting rx packets */ 191 }; 192 193 /* 194 * Useful macros. 195 */ 196 197 #define catc_get_mac(catc, mac) catc_ctrl_msg(catc, USB_DIR_IN, GetMac, 0, 0, mac, 6) 198 #define catc_reset(catc) catc_ctrl_msg(catc, USB_DIR_OUT, Reset, 0, 0, NULL, 0) 199 #define catc_set_reg(catc, reg, val) catc_ctrl_msg(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0) 200 #define catc_get_reg(catc, reg, buf) catc_ctrl_msg(catc, USB_DIR_IN, GetReg, 0, reg, buf, 1) 201 #define catc_write_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size) 202 #define catc_read_mem(catc, addr, buf, size) catc_ctrl_msg(catc, USB_DIR_IN, ReadMem, 0, addr, buf, size) 203 204 #define f5u011_rxmode(catc, rxmode) catc_ctrl_msg(catc, USB_DIR_OUT, SetRxMode, 0, 1, rxmode, 2) 205 #define f5u011_rxmode_async(catc, rxmode) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 1, &rxmode, 2, NULL) 206 #define f5u011_mchash_async(catc, hash) catc_ctrl_async(catc, USB_DIR_OUT, SetRxMode, 0, 2, &hash, 8, NULL) 207 208 #define catc_set_reg_async(catc, reg, val) catc_ctrl_async(catc, USB_DIR_OUT, SetReg, val, reg, NULL, 0, NULL) 209 #define catc_get_reg_async(catc, reg, cb) catc_ctrl_async(catc, USB_DIR_IN, GetReg, 0, reg, NULL, 1, cb) 210 #define catc_write_mem_async(catc, addr, buf, size) catc_ctrl_async(catc, USB_DIR_OUT, WriteMem, 0, addr, buf, size, NULL) 211 212 /* 213 * Receive routines. 214 */ 215 216 static void catc_rx_done(struct urb *urb) 217 { 218 struct catc *catc = urb->context; 219 u8 *pkt_start = urb->transfer_buffer; 220 struct sk_buff *skb; 221 int pkt_len, pkt_offset = 0; 222 int status = urb->status; 223 224 if (!catc->is_f5u011) { 225 clear_bit(RX_RUNNING, &catc->flags); 226 pkt_offset = 2; 227 } 228 229 if (status) { 230 dev_dbg(&urb->dev->dev, "rx_done, status %d, length %d\n", 231 status, urb->actual_length); 232 return; 233 } 234 235 do { 236 if(!catc->is_f5u011) { 237 pkt_len = le16_to_cpup((__le16*)pkt_start); 238 if (pkt_len > urb->actual_length) { 239 catc->netdev->stats.rx_length_errors++; 240 catc->netdev->stats.rx_errors++; 241 break; 242 } 243 } else { 244 pkt_len = urb->actual_length; 245 } 246 247 if (!(skb = dev_alloc_skb(pkt_len))) 248 return; 249 250 skb_copy_to_linear_data(skb, pkt_start + pkt_offset, pkt_len); 251 skb_put(skb, pkt_len); 252 253 skb->protocol = eth_type_trans(skb, catc->netdev); 254 netif_rx(skb); 255 256 catc->netdev->stats.rx_packets++; 257 catc->netdev->stats.rx_bytes += pkt_len; 258 259 /* F5U011 only does one packet per RX */ 260 if (catc->is_f5u011) 261 break; 262 pkt_start += (((pkt_len + 1) >> 6) + 1) << 6; 263 264 } while (pkt_start - (u8 *) urb->transfer_buffer < urb->actual_length); 265 266 if (catc->is_f5u011) { 267 if (atomic_read(&catc->recq_sz)) { 268 int state; 269 atomic_dec(&catc->recq_sz); 270 netdev_dbg(catc->netdev, "getting extra packet\n"); 271 urb->dev = catc->usbdev; 272 if ((state = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { 273 netdev_dbg(catc->netdev, 274 "submit(rx_urb) status %d\n", state); 275 } 276 } else { 277 clear_bit(RX_RUNNING, &catc->flags); 278 } 279 } 280 } 281 282 static void catc_irq_done(struct urb *urb) 283 { 284 struct catc *catc = urb->context; 285 u8 *data = urb->transfer_buffer; 286 int status = urb->status; 287 unsigned int hasdata, linksts = LinkNoChange; 288 int res; 289 290 if (!catc->is_f5u011) { 291 hasdata = data[1] & 0x80; 292 if (data[1] & 0x40) 293 linksts = LinkGood; 294 else if (data[1] & 0x20) 295 linksts = LinkBad; 296 } else { 297 hasdata = (unsigned int)(be16_to_cpup((__be16*)data) & 0x0fff); 298 if (data[0] == 0x90) 299 linksts = LinkGood; 300 else if (data[0] == 0xA0) 301 linksts = LinkBad; 302 } 303 304 switch (status) { 305 case 0: /* success */ 306 break; 307 case -ECONNRESET: /* unlink */ 308 case -ENOENT: 309 case -ESHUTDOWN: 310 return; 311 /* -EPIPE: should clear the halt */ 312 default: /* error */ 313 dev_dbg(&urb->dev->dev, 314 "irq_done, status %d, data %02x %02x.\n", 315 status, data[0], data[1]); 316 goto resubmit; 317 } 318 319 if (linksts == LinkGood) { 320 netif_carrier_on(catc->netdev); 321 netdev_dbg(catc->netdev, "link ok\n"); 322 } 323 324 if (linksts == LinkBad) { 325 netif_carrier_off(catc->netdev); 326 netdev_dbg(catc->netdev, "link bad\n"); 327 } 328 329 if (hasdata) { 330 if (test_and_set_bit(RX_RUNNING, &catc->flags)) { 331 if (catc->is_f5u011) 332 atomic_inc(&catc->recq_sz); 333 } else { 334 catc->rx_urb->dev = catc->usbdev; 335 if ((res = usb_submit_urb(catc->rx_urb, GFP_ATOMIC)) < 0) { 336 dev_err(&catc->usbdev->dev, 337 "submit(rx_urb) status %d\n", res); 338 } 339 } 340 } 341 resubmit: 342 res = usb_submit_urb (urb, GFP_ATOMIC); 343 if (res) 344 dev_err(&catc->usbdev->dev, 345 "can't resubmit intr, %s-%s, status %d\n", 346 catc->usbdev->bus->bus_name, 347 catc->usbdev->devpath, res); 348 } 349 350 /* 351 * Transmit routines. 352 */ 353 354 static int catc_tx_run(struct catc *catc) 355 { 356 int status; 357 358 if (catc->is_f5u011) 359 catc->tx_ptr = (catc->tx_ptr + 63) & ~63; 360 361 catc->tx_urb->transfer_buffer_length = catc->tx_ptr; 362 catc->tx_urb->transfer_buffer = catc->tx_buf[catc->tx_idx]; 363 catc->tx_urb->dev = catc->usbdev; 364 365 if ((status = usb_submit_urb(catc->tx_urb, GFP_ATOMIC)) < 0) 366 dev_err(&catc->usbdev->dev, "submit(tx_urb), status %d\n", 367 status); 368 369 catc->tx_idx = !catc->tx_idx; 370 catc->tx_ptr = 0; 371 372 netif_trans_update(catc->netdev); 373 return status; 374 } 375 376 static void catc_tx_done(struct urb *urb) 377 { 378 struct catc *catc = urb->context; 379 unsigned long flags; 380 int r, status = urb->status; 381 382 if (status == -ECONNRESET) { 383 dev_dbg(&urb->dev->dev, "Tx Reset.\n"); 384 urb->status = 0; 385 netif_trans_update(catc->netdev); 386 catc->netdev->stats.tx_errors++; 387 clear_bit(TX_RUNNING, &catc->flags); 388 netif_wake_queue(catc->netdev); 389 return; 390 } 391 392 if (status) { 393 dev_dbg(&urb->dev->dev, "tx_done, status %d, length %d\n", 394 status, urb->actual_length); 395 return; 396 } 397 398 spin_lock_irqsave(&catc->tx_lock, flags); 399 400 if (catc->tx_ptr) { 401 r = catc_tx_run(catc); 402 if (unlikely(r < 0)) 403 clear_bit(TX_RUNNING, &catc->flags); 404 } else { 405 clear_bit(TX_RUNNING, &catc->flags); 406 } 407 408 netif_wake_queue(catc->netdev); 409 410 spin_unlock_irqrestore(&catc->tx_lock, flags); 411 } 412 413 static netdev_tx_t catc_start_xmit(struct sk_buff *skb, 414 struct net_device *netdev) 415 { 416 struct catc *catc = netdev_priv(netdev); 417 unsigned long flags; 418 int r = 0; 419 char *tx_buf; 420 421 spin_lock_irqsave(&catc->tx_lock, flags); 422 423 catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6; 424 tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr; 425 if (catc->is_f5u011) 426 *(__be16 *)tx_buf = cpu_to_be16(skb->len); 427 else 428 *(__le16 *)tx_buf = cpu_to_le16(skb->len); 429 skb_copy_from_linear_data(skb, tx_buf + 2, skb->len); 430 catc->tx_ptr += skb->len + 2; 431 432 if (!test_and_set_bit(TX_RUNNING, &catc->flags)) { 433 r = catc_tx_run(catc); 434 if (r < 0) 435 clear_bit(TX_RUNNING, &catc->flags); 436 } 437 438 if ((catc->is_f5u011 && catc->tx_ptr) || 439 (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2)))) 440 netif_stop_queue(netdev); 441 442 spin_unlock_irqrestore(&catc->tx_lock, flags); 443 444 if (r >= 0) { 445 catc->netdev->stats.tx_bytes += skb->len; 446 catc->netdev->stats.tx_packets++; 447 } 448 449 dev_kfree_skb(skb); 450 451 return NETDEV_TX_OK; 452 } 453 454 static void catc_tx_timeout(struct net_device *netdev, unsigned int txqueue) 455 { 456 struct catc *catc = netdev_priv(netdev); 457 458 dev_warn(&netdev->dev, "Transmit timed out.\n"); 459 usb_unlink_urb(catc->tx_urb); 460 } 461 462 /* 463 * Control messages. 464 */ 465 466 static int catc_ctrl_msg(struct catc *catc, u8 dir, u8 request, u16 value, u16 index, void *buf, int len) 467 { 468 int retval = usb_control_msg(catc->usbdev, 469 dir ? usb_rcvctrlpipe(catc->usbdev, 0) : usb_sndctrlpipe(catc->usbdev, 0), 470 request, 0x40 | dir, value, index, buf, len, 1000); 471 return retval < 0 ? retval : 0; 472 } 473 474 static void catc_ctrl_run(struct catc *catc) 475 { 476 struct ctrl_queue *q = catc->ctrl_queue + catc->ctrl_tail; 477 struct usb_device *usbdev = catc->usbdev; 478 struct urb *urb = catc->ctrl_urb; 479 struct usb_ctrlrequest *dr = &catc->ctrl_dr; 480 int status; 481 482 dr->bRequest = q->request; 483 dr->bRequestType = 0x40 | q->dir; 484 dr->wValue = cpu_to_le16(q->value); 485 dr->wIndex = cpu_to_le16(q->index); 486 dr->wLength = cpu_to_le16(q->len); 487 488 urb->pipe = q->dir ? usb_rcvctrlpipe(usbdev, 0) : usb_sndctrlpipe(usbdev, 0); 489 urb->transfer_buffer_length = q->len; 490 urb->transfer_buffer = catc->ctrl_buf; 491 urb->setup_packet = (void *) dr; 492 urb->dev = usbdev; 493 494 if (!q->dir && q->buf && q->len) 495 memcpy(catc->ctrl_buf, q->buf, q->len); 496 497 if ((status = usb_submit_urb(catc->ctrl_urb, GFP_ATOMIC))) 498 dev_err(&catc->usbdev->dev, "submit(ctrl_urb) status %d\n", 499 status); 500 } 501 502 static void catc_ctrl_done(struct urb *urb) 503 { 504 struct catc *catc = urb->context; 505 struct ctrl_queue *q; 506 unsigned long flags; 507 int status = urb->status; 508 509 if (status) 510 dev_dbg(&urb->dev->dev, "ctrl_done, status %d, len %d.\n", 511 status, urb->actual_length); 512 513 spin_lock_irqsave(&catc->ctrl_lock, flags); 514 515 q = catc->ctrl_queue + catc->ctrl_tail; 516 517 if (q->dir) { 518 if (q->buf && q->len) 519 memcpy(q->buf, catc->ctrl_buf, q->len); 520 else 521 q->buf = catc->ctrl_buf; 522 } 523 524 if (q->callback) 525 q->callback(catc, q); 526 527 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1); 528 529 if (catc->ctrl_head != catc->ctrl_tail) 530 catc_ctrl_run(catc); 531 else 532 clear_bit(CTRL_RUNNING, &catc->flags); 533 534 spin_unlock_irqrestore(&catc->ctrl_lock, flags); 535 } 536 537 static int catc_ctrl_async(struct catc *catc, u8 dir, u8 request, u16 value, 538 u16 index, void *buf, int len, void (*callback)(struct catc *catc, struct ctrl_queue *q)) 539 { 540 struct ctrl_queue *q; 541 int retval = 0; 542 unsigned long flags; 543 544 spin_lock_irqsave(&catc->ctrl_lock, flags); 545 546 q = catc->ctrl_queue + catc->ctrl_head; 547 548 q->dir = dir; 549 q->request = request; 550 q->value = value; 551 q->index = index; 552 q->buf = buf; 553 q->len = len; 554 q->callback = callback; 555 556 catc->ctrl_head = (catc->ctrl_head + 1) & (CTRL_QUEUE - 1); 557 558 if (catc->ctrl_head == catc->ctrl_tail) { 559 dev_err(&catc->usbdev->dev, "ctrl queue full\n"); 560 catc->ctrl_tail = (catc->ctrl_tail + 1) & (CTRL_QUEUE - 1); 561 retval = -1; 562 } 563 564 if (!test_and_set_bit(CTRL_RUNNING, &catc->flags)) 565 catc_ctrl_run(catc); 566 567 spin_unlock_irqrestore(&catc->ctrl_lock, flags); 568 569 return retval; 570 } 571 572 /* 573 * Statistics. 574 */ 575 576 static void catc_stats_done(struct catc *catc, struct ctrl_queue *q) 577 { 578 int index = q->index - EthStats; 579 u16 data, last; 580 581 catc->stats_buf[index] = *((char *)q->buf); 582 583 if (index & 1) 584 return; 585 586 data = ((u16)catc->stats_buf[index] << 8) | catc->stats_buf[index + 1]; 587 last = catc->stats_vals[index >> 1]; 588 589 switch (index) { 590 case TxSingleColl: 591 case TxMultiColl: 592 catc->netdev->stats.collisions += data - last; 593 break; 594 case TxExcessColl: 595 catc->netdev->stats.tx_aborted_errors += data - last; 596 catc->netdev->stats.tx_errors += data - last; 597 break; 598 case RxFramErr: 599 catc->netdev->stats.rx_frame_errors += data - last; 600 catc->netdev->stats.rx_errors += data - last; 601 break; 602 } 603 604 catc->stats_vals[index >> 1] = data; 605 } 606 607 static void catc_stats_timer(struct timer_list *t) 608 { 609 struct catc *catc = timer_container_of(catc, t, timer); 610 int i; 611 612 for (i = 0; i < 8; i++) 613 catc_get_reg_async(catc, EthStats + 7 - i, catc_stats_done); 614 615 mod_timer(&catc->timer, jiffies + STATS_UPDATE); 616 } 617 618 /* 619 * Receive modes. Broadcast, Multicast, Promisc. 620 */ 621 622 static void catc_multicast(const unsigned char *addr, u8 *multicast) 623 { 624 u32 crc; 625 626 crc = ether_crc_le(6, addr); 627 multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7); 628 } 629 630 static void catc_set_multicast_list(struct net_device *netdev) 631 { 632 struct catc *catc = netdev_priv(netdev); 633 struct netdev_hw_addr *ha; 634 u8 broadcast[ETH_ALEN]; 635 u8 rx = RxEnable | RxPolarity | RxMultiCast; 636 637 eth_broadcast_addr(broadcast); 638 memset(catc->multicast, 0, 64); 639 640 catc_multicast(broadcast, catc->multicast); 641 catc_multicast(netdev->dev_addr, catc->multicast); 642 643 if (netdev->flags & IFF_PROMISC) { 644 memset(catc->multicast, 0xff, 64); 645 rx |= (!catc->is_f5u011) ? RxPromisc : AltRxPromisc; 646 } 647 648 if (netdev->flags & IFF_ALLMULTI) { 649 memset(catc->multicast, 0xff, 64); 650 } else { 651 netdev_for_each_mc_addr(ha, netdev) { 652 u32 crc = ether_crc_le(6, ha->addr); 653 if (!catc->is_f5u011) { 654 catc->multicast[(crc >> 3) & 0x3f] |= 1 << (crc & 7); 655 } else { 656 catc->multicast[7-(crc >> 29)] |= 1 << ((crc >> 26) & 7); 657 } 658 } 659 } 660 if (!catc->is_f5u011) { 661 catc_set_reg_async(catc, RxUnit, rx); 662 catc_write_mem_async(catc, 0xfa80, catc->multicast, 64); 663 } else { 664 f5u011_mchash_async(catc, catc->multicast); 665 if (catc->rxmode[0] != rx) { 666 catc->rxmode[0] = rx; 667 netdev_dbg(catc->netdev, 668 "Setting RX mode to %2.2X %2.2X\n", 669 catc->rxmode[0], catc->rxmode[1]); 670 f5u011_rxmode_async(catc, catc->rxmode); 671 } 672 } 673 } 674 675 static void catc_get_drvinfo(struct net_device *dev, 676 struct ethtool_drvinfo *info) 677 { 678 struct catc *catc = netdev_priv(dev); 679 strscpy(info->driver, driver_name, sizeof(info->driver)); 680 usb_make_path(catc->usbdev, info->bus_info, sizeof(info->bus_info)); 681 } 682 683 static int catc_get_link_ksettings(struct net_device *dev, 684 struct ethtool_link_ksettings *cmd) 685 { 686 struct catc *catc = netdev_priv(dev); 687 if (!catc->is_f5u011) 688 return -EOPNOTSUPP; 689 690 ethtool_link_ksettings_zero_link_mode(cmd, supported); 691 ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half); 692 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 693 694 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 695 ethtool_link_ksettings_add_link_mode(cmd, advertising, 10baseT_Half); 696 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 697 698 cmd->base.speed = SPEED_10; 699 cmd->base.duplex = DUPLEX_HALF; 700 cmd->base.port = PORT_TP; 701 cmd->base.phy_address = 0; 702 cmd->base.autoneg = AUTONEG_DISABLE; 703 704 return 0; 705 } 706 707 static const struct ethtool_ops ops = { 708 .get_drvinfo = catc_get_drvinfo, 709 .get_link = ethtool_op_get_link, 710 .get_link_ksettings = catc_get_link_ksettings, 711 }; 712 713 /* 714 * Open, close. 715 */ 716 717 static int catc_open(struct net_device *netdev) 718 { 719 struct catc *catc = netdev_priv(netdev); 720 int status; 721 722 catc->irq_urb->dev = catc->usbdev; 723 if ((status = usb_submit_urb(catc->irq_urb, GFP_KERNEL)) < 0) { 724 dev_err(&catc->usbdev->dev, "submit(irq_urb) status %d\n", 725 status); 726 return -1; 727 } 728 729 netif_start_queue(netdev); 730 731 if (!catc->is_f5u011) 732 mod_timer(&catc->timer, jiffies + STATS_UPDATE); 733 734 return 0; 735 } 736 737 static int catc_stop(struct net_device *netdev) 738 { 739 struct catc *catc = netdev_priv(netdev); 740 741 netif_stop_queue(netdev); 742 743 if (!catc->is_f5u011) 744 timer_delete_sync(&catc->timer); 745 746 usb_kill_urb(catc->rx_urb); 747 usb_kill_urb(catc->tx_urb); 748 usb_kill_urb(catc->irq_urb); 749 usb_kill_urb(catc->ctrl_urb); 750 751 return 0; 752 } 753 754 static const struct net_device_ops catc_netdev_ops = { 755 .ndo_open = catc_open, 756 .ndo_stop = catc_stop, 757 .ndo_start_xmit = catc_start_xmit, 758 759 .ndo_tx_timeout = catc_tx_timeout, 760 .ndo_set_rx_mode = catc_set_multicast_list, 761 .ndo_set_mac_address = eth_mac_addr, 762 .ndo_validate_addr = eth_validate_addr, 763 }; 764 765 /* 766 * USB probe, disconnect. 767 */ 768 769 static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id) 770 { 771 struct device *dev = &intf->dev; 772 struct usb_device *usbdev = interface_to_usbdev(intf); 773 struct net_device *netdev; 774 struct catc *catc; 775 u8 broadcast[ETH_ALEN]; 776 u8 *macbuf; 777 int pktsz, ret = -ENOMEM; 778 static const u8 bulk_ep_addr[] = { 779 CATC_USB_EP_BULK | USB_DIR_OUT, 780 CATC_USB_EP_BULK | USB_DIR_IN, 781 0}; 782 static const u8 int_ep_addr[] = { 783 CATC_USB_EP_INT_IN | USB_DIR_IN, 784 0}; 785 786 macbuf = kmalloc(ETH_ALEN, GFP_KERNEL); 787 if (!macbuf) 788 goto error; 789 790 if (usb_set_interface(usbdev, 791 intf->altsetting->desc.bInterfaceNumber, 1)) { 792 dev_err(dev, "Can't set altsetting 1.\n"); 793 ret = -EIO; 794 goto fail_mem; 795 } 796 797 /* Verify that all required endpoints are present */ 798 if (!usb_check_bulk_endpoints(intf, bulk_ep_addr) || 799 !usb_check_int_endpoints(intf, int_ep_addr)) { 800 dev_err(dev, "Missing or invalid endpoints\n"); 801 ret = -ENODEV; 802 goto fail_mem; 803 } 804 805 netdev = alloc_etherdev(sizeof(struct catc)); 806 if (!netdev) 807 goto fail_mem; 808 809 catc = netdev_priv(netdev); 810 811 netdev->netdev_ops = &catc_netdev_ops; 812 netdev->watchdog_timeo = TX_TIMEOUT; 813 netdev->ethtool_ops = &ops; 814 815 catc->usbdev = usbdev; 816 catc->netdev = netdev; 817 818 spin_lock_init(&catc->tx_lock); 819 spin_lock_init(&catc->ctrl_lock); 820 821 timer_setup(&catc->timer, catc_stats_timer, 0); 822 823 catc->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 824 catc->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 825 catc->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 826 catc->irq_urb = usb_alloc_urb(0, GFP_KERNEL); 827 if ((!catc->ctrl_urb) || (!catc->tx_urb) || 828 (!catc->rx_urb) || (!catc->irq_urb)) { 829 dev_err(&intf->dev, "No free urbs available.\n"); 830 ret = -ENOMEM; 831 goto fail_free; 832 } 833 834 /* The F5U011 has the same vendor/product as the netmate but a device version of 0x130 */ 835 if (le16_to_cpu(usbdev->descriptor.idVendor) == 0x0423 && 836 le16_to_cpu(usbdev->descriptor.idProduct) == 0xa && 837 le16_to_cpu(catc->usbdev->descriptor.bcdDevice) == 0x0130) { 838 dev_dbg(dev, "Testing for f5u011\n"); 839 catc->is_f5u011 = 1; 840 atomic_set(&catc->recq_sz, 0); 841 pktsz = RX_PKT_SZ; 842 } else { 843 pktsz = RX_MAX_BURST * (PKT_SZ + 2); 844 } 845 846 usb_fill_control_urb(catc->ctrl_urb, usbdev, usb_sndctrlpipe(usbdev, 0), 847 NULL, NULL, 0, catc_ctrl_done, catc); 848 849 usb_fill_bulk_urb(catc->tx_urb, usbdev, usb_sndbulkpipe(usbdev, CATC_USB_EP_BULK), 850 NULL, 0, catc_tx_done, catc); 851 852 usb_fill_bulk_urb(catc->rx_urb, usbdev, usb_rcvbulkpipe(usbdev, CATC_USB_EP_BULK), 853 catc->rx_buf, pktsz, catc_rx_done, catc); 854 855 usb_fill_int_urb(catc->irq_urb, usbdev, usb_rcvintpipe(usbdev, CATC_USB_EP_INT_IN), 856 catc->irq_buf, 2, catc_irq_done, catc, 1); 857 858 if (!catc->is_f5u011) { 859 u32 *buf; 860 int i; 861 862 dev_dbg(dev, "Checking memory size\n"); 863 864 buf = kmalloc(4, GFP_KERNEL); 865 if (!buf) { 866 ret = -ENOMEM; 867 goto fail_free; 868 } 869 870 *buf = 0x12345678; 871 catc_write_mem(catc, 0x7a80, buf, 4); 872 *buf = 0x87654321; 873 catc_write_mem(catc, 0xfa80, buf, 4); 874 catc_read_mem(catc, 0x7a80, buf, 4); 875 876 switch (*buf) { 877 case 0x12345678: 878 catc_set_reg(catc, TxBufCount, 8); 879 catc_set_reg(catc, RxBufCount, 32); 880 dev_dbg(dev, "64k Memory\n"); 881 break; 882 default: 883 dev_warn(&intf->dev, 884 "Couldn't detect memory size, assuming 32k\n"); 885 fallthrough; 886 case 0x87654321: 887 catc_set_reg(catc, TxBufCount, 4); 888 catc_set_reg(catc, RxBufCount, 16); 889 dev_dbg(dev, "32k Memory\n"); 890 break; 891 } 892 893 kfree(buf); 894 895 dev_dbg(dev, "Getting MAC from SEEROM.\n"); 896 897 catc_get_mac(catc, macbuf); 898 eth_hw_addr_set(netdev, macbuf); 899 900 dev_dbg(dev, "Setting MAC into registers.\n"); 901 902 for (i = 0; i < 6; i++) 903 catc_set_reg(catc, StationAddr0 - i, netdev->dev_addr[i]); 904 905 dev_dbg(dev, "Filling the multicast list.\n"); 906 907 eth_broadcast_addr(broadcast); 908 catc_multicast(broadcast, catc->multicast); 909 catc_multicast(netdev->dev_addr, catc->multicast); 910 catc_write_mem(catc, 0xfa80, catc->multicast, 64); 911 912 dev_dbg(dev, "Clearing error counters.\n"); 913 914 for (i = 0; i < 8; i++) 915 catc_set_reg(catc, EthStats + i, 0); 916 catc->last_stats = jiffies; 917 918 dev_dbg(dev, "Enabling.\n"); 919 920 catc_set_reg(catc, MaxBurst, RX_MAX_BURST); 921 catc_set_reg(catc, OpModes, OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits); 922 catc_set_reg(catc, LEDCtrl, LEDLink); 923 catc_set_reg(catc, RxUnit, RxEnable | RxPolarity | RxMultiCast); 924 } else { 925 dev_dbg(dev, "Performing reset\n"); 926 catc_reset(catc); 927 catc_get_mac(catc, macbuf); 928 eth_hw_addr_set(netdev, macbuf); 929 930 dev_dbg(dev, "Setting RX Mode\n"); 931 catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast; 932 catc->rxmode[1] = 0; 933 f5u011_rxmode(catc, catc->rxmode); 934 } 935 dev_dbg(dev, "Init done.\n"); 936 printk(KERN_INFO "%s: %s USB Ethernet at usb-%s-%s, %pM.\n", 937 netdev->name, (catc->is_f5u011) ? "Belkin F5U011" : "CATC EL1210A NetMate", 938 usbdev->bus->bus_name, usbdev->devpath, netdev->dev_addr); 939 usb_set_intfdata(intf, catc); 940 941 SET_NETDEV_DEV(netdev, &intf->dev); 942 ret = register_netdev(netdev); 943 if (ret) 944 goto fail_clear_intfdata; 945 946 kfree(macbuf); 947 return 0; 948 949 fail_clear_intfdata: 950 usb_set_intfdata(intf, NULL); 951 fail_free: 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(netdev); 957 fail_mem: 958 kfree(macbuf); 959 error: 960 return ret; 961 } 962 963 static void catc_disconnect(struct usb_interface *intf) 964 { 965 struct catc *catc = usb_get_intfdata(intf); 966 967 usb_set_intfdata(intf, NULL); 968 if (catc) { 969 unregister_netdev(catc->netdev); 970 usb_free_urb(catc->ctrl_urb); 971 usb_free_urb(catc->tx_urb); 972 usb_free_urb(catc->rx_urb); 973 usb_free_urb(catc->irq_urb); 974 free_netdev(catc->netdev); 975 } 976 } 977 978 /* 979 * Module functions and tables. 980 */ 981 982 static const struct usb_device_id catc_id_table[] = { 983 { USB_DEVICE(0x0423, 0xa) }, /* CATC Netmate, Belkin F5U011 */ 984 { USB_DEVICE(0x0423, 0xc) }, /* CATC Netmate II, Belkin F5U111 */ 985 { USB_DEVICE(0x08d1, 0x1) }, /* smartBridges smartNIC */ 986 { } 987 }; 988 989 MODULE_DEVICE_TABLE(usb, catc_id_table); 990 991 static struct usb_driver catc_driver = { 992 .name = driver_name, 993 .probe = catc_probe, 994 .disconnect = catc_disconnect, 995 .id_table = catc_id_table, 996 .disable_hub_initiated_lpm = 1, 997 }; 998 999 module_usb_driver(catc_driver); 1000