1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright (c) 1999-2021 Petko Manolov (petkan@nucleusys.com) 4 * 5 */ 6 7#include <linux/sched.h> 8#include <linux/slab.h> 9#include <linux/init.h> 10#include <linux/delay.h> 11#include <linux/netdevice.h> 12#include <linux/etherdevice.h> 13#include <linux/ethtool.h> 14#include <linux/mii.h> 15#include <linux/usb.h> 16#include <linux/module.h> 17#include <asm/byteorder.h> 18#include <linux/uaccess.h> 19#include "pegasus.h" 20 21/* 22 * Version Information 23 */ 24#define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>" 25#define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver" 26 27static const char driver_name[] = "pegasus"; 28 29#undef PEGASUS_WRITE_EEPROM 30#define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \ 31 BMSR_100FULL | BMSR_ANEGCAPABLE) 32#define CARRIER_CHECK_DELAY (2 * HZ) 33 34static bool loopback; 35static bool mii_mode; 36static char *devid; 37 38static struct usb_eth_dev usb_dev_id[] = { 39#define PEGASUS_DEV(pn, vid, pid, flags) \ 40 {.name = pn, .vendor = vid, .device = pid, .private = flags}, 41#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \ 42 PEGASUS_DEV(pn, vid, pid, flags) 43#include "pegasus.h" 44#undef PEGASUS_DEV 45#undef PEGASUS_DEV_CLASS 46 {NULL, 0, 0, 0}, 47 {NULL, 0, 0, 0} 48}; 49 50static struct usb_device_id pegasus_ids[] = { 51#define PEGASUS_DEV(pn, vid, pid, flags) \ 52 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid}, 53/* 54 * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product 55 * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to 56 * ignore adaptors belonging to the "Wireless" class 0xE0. For this one 57 * case anyway, seeing as the pegasus is for "Wired" adaptors. 58 */ 59#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \ 60 {.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \ 61 .idVendor = vid, .idProduct = pid, .bDeviceClass = dclass}, 62#include "pegasus.h" 63#undef PEGASUS_DEV 64#undef PEGASUS_DEV_CLASS 65 {}, 66 {} 67}; 68 69MODULE_AUTHOR(DRIVER_AUTHOR); 70MODULE_DESCRIPTION(DRIVER_DESC); 71MODULE_LICENSE("GPL"); 72module_param(loopback, bool, 0); 73module_param(mii_mode, bool, 0); 74module_param(devid, charp, 0); 75MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)"); 76MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0"); 77MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'"); 78 79/* use ethtool to change the level for any given device */ 80static int msg_level = -1; 81module_param(msg_level, int, 0); 82MODULE_PARM_DESC(msg_level, "Override default message level"); 83 84MODULE_DEVICE_TABLE(usb, pegasus_ids); 85static const struct net_device_ops pegasus_netdev_ops; 86 87/*****/ 88 89static void async_ctrl_callback(struct urb *urb) 90{ 91 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; 92 int status = urb->status; 93 94 if (status < 0) 95 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status); 96 kfree(req); 97 usb_free_urb(urb); 98} 99 100static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data) 101{ 102 return usb_control_msg_recv(pegasus->usb, 0, PEGASUS_REQ_GET_REGS, 103 PEGASUS_REQT_READ, 0, indx, data, size, 104 1000, GFP_NOIO); 105} 106 107static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size, 108 const void *data) 109{ 110 int ret; 111 112 ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REGS, 113 PEGASUS_REQT_WRITE, 0, indx, data, size, 114 1000, GFP_NOIO); 115 if (ret < 0) 116 netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret); 117 118 return ret; 119} 120 121/* 122 * There is only one way to write to a single ADM8511 register and this is via 123 * specific control request. 'data' is ignored by the device, but it is here to 124 * not break the API. 125 */ 126static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data) 127{ 128 void *buf = &data; 129 int ret; 130 131 ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REG, 132 PEGASUS_REQT_WRITE, data, indx, buf, 1, 133 1000, GFP_NOIO); 134 if (ret < 0) 135 netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret); 136 137 return ret; 138} 139 140static int update_eth_regs_async(pegasus_t *pegasus) 141{ 142 int ret = -ENOMEM; 143 struct urb *async_urb; 144 struct usb_ctrlrequest *req; 145 146 req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC); 147 if (req == NULL) 148 return ret; 149 150 async_urb = usb_alloc_urb(0, GFP_ATOMIC); 151 if (async_urb == NULL) { 152 kfree(req); 153 return ret; 154 } 155 req->bRequestType = PEGASUS_REQT_WRITE; 156 req->bRequest = PEGASUS_REQ_SET_REGS; 157 req->wValue = cpu_to_le16(0); 158 req->wIndex = cpu_to_le16(EthCtrl0); 159 req->wLength = cpu_to_le16(3); 160 161 usb_fill_control_urb(async_urb, pegasus->usb, 162 usb_sndctrlpipe(pegasus->usb, 0), (void *)req, 163 pegasus->eth_regs, 3, async_ctrl_callback, req); 164 165 ret = usb_submit_urb(async_urb, GFP_ATOMIC); 166 if (ret) { 167 if (ret == -ENODEV) 168 netif_device_detach(pegasus->net); 169 netif_err(pegasus, drv, pegasus->net, 170 "%s returned %d\n", __func__, ret); 171 } 172 return ret; 173} 174 175static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd) 176{ 177 int i, ret; 178 __le16 regdi; 179 __u8 data[4] = { phy, 0, 0, indx }; 180 181 if (cmd & PHY_WRITE) { 182 __le16 *t = (__le16 *) & data[1]; 183 *t = cpu_to_le16(*regd); 184 } 185 set_register(p, PhyCtrl, 0); 186 set_registers(p, PhyAddr, sizeof(data), data); 187 set_register(p, PhyCtrl, (indx | cmd)); 188 for (i = 0; i < REG_TIMEOUT; i++) { 189 ret = get_registers(p, PhyCtrl, 1, data); 190 if (ret < 0) 191 goto fail; 192 if (data[0] & PHY_DONE) 193 break; 194 } 195 if (i >= REG_TIMEOUT) { 196 ret = -ETIMEDOUT; 197 goto fail; 198 } 199 if (cmd & PHY_READ) { 200 ret = get_registers(p, PhyData, 2, ®di); 201 if (ret < 0) 202 goto fail; 203 *regd = le16_to_cpu(regdi); 204 } 205 return 0; 206fail: 207 netif_dbg(p, drv, p->net, "%s failed\n", __func__); 208 return ret; 209} 210 211/* Returns non-negative int on success, error on failure */ 212static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd) 213{ 214 return __mii_op(pegasus, phy, indx, regd, PHY_READ); 215} 216 217/* Returns zero on success, error on failure */ 218static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd) 219{ 220 return __mii_op(pegasus, phy, indx, regd, PHY_WRITE); 221} 222 223static int mdio_read(struct net_device *dev, int phy_id, int loc) 224{ 225 pegasus_t *pegasus = netdev_priv(dev); 226 int ret; 227 u16 res; 228 229 ret = read_mii_word(pegasus, phy_id, loc, &res); 230 if (ret < 0) 231 return ret; 232 233 return (int)res; 234} 235 236static void mdio_write(struct net_device *dev, int phy_id, int loc, int val) 237{ 238 pegasus_t *pegasus = netdev_priv(dev); 239 u16 data = val; 240 241 write_mii_word(pegasus, phy_id, loc, &data); 242} 243 244static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata) 245{ 246 int ret, i; 247 __le16 retdatai; 248 __u8 tmp = 0; 249 250 set_register(pegasus, EpromCtrl, 0); 251 set_register(pegasus, EpromOffset, index); 252 set_register(pegasus, EpromCtrl, EPROM_READ); 253 254 for (i = 0; i < REG_TIMEOUT; i++) { 255 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 256 if (ret < 0) 257 goto fail; 258 if (tmp & EPROM_DONE) 259 break; 260 } 261 if (i >= REG_TIMEOUT) { 262 ret = -ETIMEDOUT; 263 goto fail; 264 } 265 266 ret = get_registers(pegasus, EpromData, 2, &retdatai); 267 if (ret < 0) 268 goto fail; 269 *retdata = le16_to_cpu(retdatai); 270 return ret; 271 272fail: 273 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__); 274 return ret; 275} 276 277#ifdef PEGASUS_WRITE_EEPROM 278static inline void enable_eprom_write(pegasus_t *pegasus) 279{ 280 __u8 tmp; 281 282 get_registers(pegasus, EthCtrl2, 1, &tmp); 283 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE); 284} 285 286static inline void disable_eprom_write(pegasus_t *pegasus) 287{ 288 __u8 tmp; 289 290 get_registers(pegasus, EthCtrl2, 1, &tmp); 291 set_register(pegasus, EpromCtrl, 0); 292 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE); 293} 294 295static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data) 296{ 297 int i; 298 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE }; 299 int ret; 300 __le16 le_data = cpu_to_le16(data); 301 302 set_registers(pegasus, EpromOffset, 4, d); 303 enable_eprom_write(pegasus); 304 set_register(pegasus, EpromOffset, index); 305 set_registers(pegasus, EpromData, 2, &le_data); 306 set_register(pegasus, EpromCtrl, EPROM_WRITE); 307 308 for (i = 0; i < REG_TIMEOUT; i++) { 309 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 310 if (ret == -ESHUTDOWN) 311 goto fail; 312 if (tmp & EPROM_DONE) 313 break; 314 } 315 disable_eprom_write(pegasus); 316 if (i >= REG_TIMEOUT) 317 goto fail; 318 319 return ret; 320 321fail: 322 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__); 323 return -ETIMEDOUT; 324} 325#endif /* PEGASUS_WRITE_EEPROM */ 326 327static inline int get_node_id(pegasus_t *pegasus, u8 *id) 328{ 329 int i, ret; 330 u16 w16; 331 332 for (i = 0; i < 3; i++) { 333 ret = read_eprom_word(pegasus, i, &w16); 334 if (ret < 0) 335 return ret; 336 ((__le16 *) id)[i] = cpu_to_le16(w16); 337 } 338 339 return 0; 340} 341 342static void set_ethernet_addr(pegasus_t *pegasus) 343{ 344 int ret; 345 u8 node_id[6]; 346 347 if (pegasus->features & PEGASUS_II) { 348 ret = get_registers(pegasus, 0x10, sizeof(node_id), node_id); 349 if (ret < 0) 350 goto err; 351 } else { 352 ret = get_node_id(pegasus, node_id); 353 if (ret < 0) 354 goto err; 355 ret = set_registers(pegasus, EthID, sizeof(node_id), node_id); 356 if (ret < 0) 357 goto err; 358 } 359 360 eth_hw_addr_set(pegasus->net, node_id); 361 362 return; 363err: 364 eth_hw_addr_random(pegasus->net); 365 netif_dbg(pegasus, drv, pegasus->net, "software assigned MAC address.\n"); 366 367 return; 368} 369 370static inline int reset_mac(pegasus_t *pegasus) 371{ 372 int ret, i; 373 __u8 data = 0x8; 374 375 set_register(pegasus, EthCtrl1, data); 376 for (i = 0; i < REG_TIMEOUT; i++) { 377 ret = get_registers(pegasus, EthCtrl1, 1, &data); 378 if (ret < 0) 379 goto fail; 380 if (~data & 0x08) { 381 if (loopback) 382 break; 383 if (mii_mode && (pegasus->features & HAS_HOME_PNA)) 384 set_register(pegasus, Gpio1, 0x34); 385 else 386 set_register(pegasus, Gpio1, 0x26); 387 set_register(pegasus, Gpio0, pegasus->features); 388 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET); 389 break; 390 } 391 } 392 if (i == REG_TIMEOUT) 393 return -ETIMEDOUT; 394 395 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || 396 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { 397 set_register(pegasus, Gpio0, 0x24); 398 set_register(pegasus, Gpio0, 0x26); 399 } 400 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) { 401 __u16 auxmode; 402 ret = read_mii_word(pegasus, 3, 0x1b, &auxmode); 403 if (ret < 0) 404 goto fail; 405 auxmode |= 4; 406 write_mii_word(pegasus, 3, 0x1b, &auxmode); 407 } 408 409 return 0; 410fail: 411 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__); 412 return ret; 413} 414 415static int enable_net_traffic(struct net_device *dev, struct usb_device *usb) 416{ 417 pegasus_t *pegasus = netdev_priv(dev); 418 int ret; 419 __u16 linkpart; 420 __u8 data[4]; 421 422 ret = read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart); 423 if (ret < 0) 424 goto fail; 425 data[0] = 0xc8; /* TX & RX enable, append status, no CRC */ 426 data[1] = 0; 427 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL)) 428 data[1] |= 0x20; /* set full duplex */ 429 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF)) 430 data[1] |= 0x10; /* set 100 Mbps */ 431 if (mii_mode) 432 data[1] = 0; 433 data[2] = loopback ? 0x09 : 0x01; 434 435 memcpy(pegasus->eth_regs, data, sizeof(data)); 436 ret = set_registers(pegasus, EthCtrl0, 3, data); 437 438 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || 439 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 || 440 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { 441 u16 auxmode; 442 ret = read_mii_word(pegasus, 0, 0x1b, &auxmode); 443 if (ret < 0) 444 goto fail; 445 auxmode |= 4; 446 write_mii_word(pegasus, 0, 0x1b, &auxmode); 447 } 448 449 return ret; 450fail: 451 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__); 452 return ret; 453} 454 455static void read_bulk_callback(struct urb *urb) 456{ 457 pegasus_t *pegasus = urb->context; 458 struct net_device *net; 459 u8 *buf = urb->transfer_buffer; 460 int rx_status, count = urb->actual_length; 461 int status = urb->status; 462 __u16 pkt_len; 463 464 if (!pegasus) 465 return; 466 467 net = pegasus->net; 468 if (!netif_device_present(net) || !netif_running(net)) 469 return; 470 471 switch (status) { 472 case 0: 473 break; 474 case -ETIME: 475 netif_dbg(pegasus, rx_err, net, "reset MAC\n"); 476 pegasus->flags &= ~PEGASUS_RX_BUSY; 477 break; 478 case -EPIPE: /* stall, or disconnect from TT */ 479 /* FIXME schedule work to clear the halt */ 480 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n"); 481 return; 482 case -ENOENT: 483 case -ECONNRESET: 484 case -ESHUTDOWN: 485 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status); 486 return; 487 default: 488 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status); 489 goto goon; 490 } 491 492 if (count < 4) 493 goto goon; 494 495 rx_status = buf[count - 2]; 496 if (rx_status & 0x1c) { 497 netif_dbg(pegasus, rx_err, net, 498 "RX packet error %x\n", rx_status); 499 net->stats.rx_errors++; 500 if (rx_status & 0x04) /* runt */ 501 net->stats.rx_length_errors++; 502 if (rx_status & 0x08) 503 net->stats.rx_crc_errors++; 504 if (rx_status & 0x10) /* extra bits */ 505 net->stats.rx_frame_errors++; 506 goto goon; 507 } 508 if (pegasus->chip == 0x8513) { 509 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer); 510 pkt_len &= 0x0fff; 511 pegasus->rx_skb->data += 2; 512 } else { 513 pkt_len = buf[count - 3] << 8; 514 pkt_len += buf[count - 4]; 515 pkt_len &= 0xfff; 516 pkt_len -= 4; 517 } 518 519 /* 520 * If the packet is unreasonably long, quietly drop it rather than 521 * kernel panicing by calling skb_put. 522 */ 523 if (pkt_len > PEGASUS_MTU) 524 goto goon; 525 526 /* 527 * at this point we are sure pegasus->rx_skb != NULL 528 * so we go ahead and pass up the packet. 529 */ 530 skb_put(pegasus->rx_skb, pkt_len); 531 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net); 532 netif_rx(pegasus->rx_skb); 533 net->stats.rx_packets++; 534 net->stats.rx_bytes += pkt_len; 535 536 if (pegasus->flags & PEGASUS_UNPLUG) 537 return; 538 539 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, PEGASUS_MTU, 540 GFP_ATOMIC); 541 542 if (pegasus->rx_skb == NULL) 543 goto tl_sched; 544goon: 545 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 546 usb_rcvbulkpipe(pegasus->usb, 1), 547 pegasus->rx_skb->data, PEGASUS_MTU, 548 read_bulk_callback, pegasus); 549 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 550 if (rx_status == -ENODEV) 551 netif_device_detach(pegasus->net); 552 else if (rx_status) { 553 pegasus->flags |= PEGASUS_RX_URB_FAIL; 554 goto tl_sched; 555 } else { 556 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 557 } 558 559 return; 560 561tl_sched: 562 tasklet_schedule(&pegasus->rx_tl); 563} 564 565static void rx_fixup(struct tasklet_struct *t) 566{ 567 pegasus_t *pegasus = from_tasklet(pegasus, t, rx_tl); 568 int status; 569 570 if (pegasus->flags & PEGASUS_UNPLUG) 571 return; 572 573 if (pegasus->flags & PEGASUS_RX_URB_FAIL) 574 if (pegasus->rx_skb) 575 goto try_again; 576 if (pegasus->rx_skb == NULL) 577 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, 578 PEGASUS_MTU, 579 GFP_ATOMIC); 580 if (pegasus->rx_skb == NULL) { 581 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n"); 582 tasklet_schedule(&pegasus->rx_tl); 583 return; 584 } 585 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 586 usb_rcvbulkpipe(pegasus->usb, 1), 587 pegasus->rx_skb->data, PEGASUS_MTU, 588 read_bulk_callback, pegasus); 589try_again: 590 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 591 if (status == -ENODEV) 592 netif_device_detach(pegasus->net); 593 else if (status) { 594 pegasus->flags |= PEGASUS_RX_URB_FAIL; 595 tasklet_schedule(&pegasus->rx_tl); 596 } else { 597 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 598 } 599} 600 601static void write_bulk_callback(struct urb *urb) 602{ 603 pegasus_t *pegasus = urb->context; 604 struct net_device *net; 605 int status = urb->status; 606 607 if (!pegasus) 608 return; 609 610 net = pegasus->net; 611 612 if (!netif_device_present(net) || !netif_running(net)) 613 return; 614 615 switch (status) { 616 case -EPIPE: 617 /* FIXME schedule_work() to clear the tx halt */ 618 netif_stop_queue(net); 619 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n"); 620 return; 621 case -ENOENT: 622 case -ECONNRESET: 623 case -ESHUTDOWN: 624 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status); 625 return; 626 default: 627 netif_info(pegasus, tx_err, net, "TX status %d\n", status); 628 fallthrough; 629 case 0: 630 break; 631 } 632 633 netif_trans_update(net); /* prevent tx timeout */ 634 netif_wake_queue(net); 635} 636 637static void intr_callback(struct urb *urb) 638{ 639 pegasus_t *pegasus = urb->context; 640 struct net_device *net; 641 int res, status = urb->status; 642 643 if (!pegasus) 644 return; 645 net = pegasus->net; 646 647 switch (status) { 648 case 0: 649 break; 650 case -ECONNRESET: /* unlink */ 651 case -ENOENT: 652 case -ESHUTDOWN: 653 return; 654 default: 655 /* some Pegasus-I products report LOTS of data 656 * toggle errors... avoid log spamming 657 */ 658 netif_dbg(pegasus, timer, net, "intr status %d\n", status); 659 } 660 661 if (urb->actual_length >= 6) { 662 u8 *d = urb->transfer_buffer; 663 664 /* byte 0 == tx_status1, reg 2B */ 665 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL 666 |LATE_COL|JABBER_TIMEOUT)) { 667 net->stats.tx_errors++; 668 if (d[0] & TX_UNDERRUN) 669 net->stats.tx_fifo_errors++; 670 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT)) 671 net->stats.tx_aborted_errors++; 672 if (d[0] & LATE_COL) 673 net->stats.tx_window_errors++; 674 } 675 676 /* d[5].LINK_STATUS lies on some adapters. 677 * d[0].NO_CARRIER kicks in only with failed TX. 678 * ... so monitoring with MII may be safest. 679 */ 680 681 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */ 682 net->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4]; 683 } 684 685 res = usb_submit_urb(urb, GFP_ATOMIC); 686 if (res == -ENODEV) 687 netif_device_detach(pegasus->net); 688 if (res) 689 netif_err(pegasus, timer, net, 690 "can't resubmit interrupt urb, %d\n", res); 691} 692 693static void pegasus_tx_timeout(struct net_device *net, unsigned int txqueue) 694{ 695 pegasus_t *pegasus = netdev_priv(net); 696 netif_warn(pegasus, timer, net, "tx timeout\n"); 697 usb_unlink_urb(pegasus->tx_urb); 698 net->stats.tx_errors++; 699} 700 701static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb, 702 struct net_device *net) 703{ 704 pegasus_t *pegasus = netdev_priv(net); 705 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3; 706 int res; 707 __u16 l16 = skb->len; 708 709 netif_stop_queue(net); 710 711 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16); 712 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len); 713 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb, 714 usb_sndbulkpipe(pegasus->usb, 2), 715 pegasus->tx_buff, count, 716 write_bulk_callback, pegasus); 717 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) { 718 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res); 719 switch (res) { 720 case -EPIPE: /* stall, or disconnect from TT */ 721 /* cleanup should already have been scheduled */ 722 break; 723 case -ENODEV: /* disconnect() upcoming */ 724 case -EPERM: 725 netif_device_detach(pegasus->net); 726 break; 727 default: 728 net->stats.tx_errors++; 729 netif_start_queue(net); 730 } 731 } else { 732 net->stats.tx_packets++; 733 net->stats.tx_bytes += skb->len; 734 } 735 dev_kfree_skb(skb); 736 737 return NETDEV_TX_OK; 738} 739 740static inline void disable_net_traffic(pegasus_t *pegasus) 741{ 742 __le16 tmp = cpu_to_le16(0); 743 744 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp); 745} 746 747static inline int get_interrupt_interval(pegasus_t *pegasus) 748{ 749 u16 data; 750 u8 interval; 751 int ret; 752 753 ret = read_eprom_word(pegasus, 4, &data); 754 if (ret < 0) 755 return ret; 756 757 interval = data >> 8; 758 if (pegasus->usb->speed != USB_SPEED_HIGH) { 759 if (interval < 0x80) { 760 netif_info(pegasus, timer, pegasus->net, 761 "intr interval changed from %ums to %ums\n", 762 interval, 0x80); 763 interval = 0x80; 764 data = (data & 0x00FF) | ((u16)interval << 8); 765#ifdef PEGASUS_WRITE_EEPROM 766 write_eprom_word(pegasus, 4, data); 767#endif 768 } 769 } 770 pegasus->intr_interval = interval; 771 772 return 0; 773} 774 775static void set_carrier(struct net_device *net) 776{ 777 pegasus_t *pegasus = netdev_priv(net); 778 u16 tmp; 779 780 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp)) 781 return; 782 783 if (tmp & BMSR_LSTATUS) 784 netif_carrier_on(net); 785 else 786 netif_carrier_off(net); 787} 788 789static void free_all_urbs(pegasus_t *pegasus) 790{ 791 usb_free_urb(pegasus->intr_urb); 792 usb_free_urb(pegasus->tx_urb); 793 usb_free_urb(pegasus->rx_urb); 794} 795 796static void unlink_all_urbs(pegasus_t *pegasus) 797{ 798 usb_kill_urb(pegasus->intr_urb); 799 usb_kill_urb(pegasus->tx_urb); 800 usb_kill_urb(pegasus->rx_urb); 801} 802 803static int alloc_urbs(pegasus_t *pegasus) 804{ 805 int res = -ENOMEM; 806 807 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 808 if (!pegasus->rx_urb) { 809 return res; 810 } 811 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 812 if (!pegasus->tx_urb) { 813 usb_free_urb(pegasus->rx_urb); 814 return res; 815 } 816 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 817 if (!pegasus->intr_urb) { 818 usb_free_urb(pegasus->tx_urb); 819 usb_free_urb(pegasus->rx_urb); 820 return res; 821 } 822 823 return 0; 824} 825 826static int pegasus_open(struct net_device *net) 827{ 828 pegasus_t *pegasus = netdev_priv(net); 829 int res=-ENOMEM; 830 831 if (pegasus->rx_skb == NULL) 832 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, 833 PEGASUS_MTU, 834 GFP_KERNEL); 835 if (!pegasus->rx_skb) 836 goto exit; 837 838 set_registers(pegasus, EthID, 6, net->dev_addr); 839 840 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 841 usb_rcvbulkpipe(pegasus->usb, 1), 842 pegasus->rx_skb->data, PEGASUS_MTU, 843 read_bulk_callback, pegasus); 844 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) { 845 if (res == -ENODEV) 846 netif_device_detach(pegasus->net); 847 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res); 848 goto exit; 849 } 850 851 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb, 852 usb_rcvintpipe(pegasus->usb, 3), 853 pegasus->intr_buff, sizeof(pegasus->intr_buff), 854 intr_callback, pegasus, pegasus->intr_interval); 855 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) { 856 if (res == -ENODEV) 857 netif_device_detach(pegasus->net); 858 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res); 859 usb_kill_urb(pegasus->rx_urb); 860 goto exit; 861 } 862 res = enable_net_traffic(net, pegasus->usb); 863 if (res < 0) { 864 netif_dbg(pegasus, ifup, net, 865 "can't enable_net_traffic() - %d\n", res); 866 res = -EIO; 867 usb_kill_urb(pegasus->rx_urb); 868 usb_kill_urb(pegasus->intr_urb); 869 goto exit; 870 } 871 set_carrier(net); 872 netif_start_queue(net); 873 netif_dbg(pegasus, ifup, net, "open\n"); 874 res = 0; 875exit: 876 return res; 877} 878 879static int pegasus_close(struct net_device *net) 880{ 881 pegasus_t *pegasus = netdev_priv(net); 882 883 netif_stop_queue(net); 884 if (!(pegasus->flags & PEGASUS_UNPLUG)) 885 disable_net_traffic(pegasus); 886 tasklet_kill(&pegasus->rx_tl); 887 unlink_all_urbs(pegasus); 888 889 return 0; 890} 891 892static void pegasus_get_drvinfo(struct net_device *dev, 893 struct ethtool_drvinfo *info) 894{ 895 pegasus_t *pegasus = netdev_priv(dev); 896 897 strscpy(info->driver, driver_name, sizeof(info->driver)); 898 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info)); 899} 900 901/* also handles three patterns of some kind in hardware */ 902#define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) 903 904static void 905pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 906{ 907 pegasus_t *pegasus = netdev_priv(dev); 908 909 wol->supported = WAKE_MAGIC | WAKE_PHY; 910 wol->wolopts = pegasus->wolopts; 911} 912 913static int 914pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 915{ 916 pegasus_t *pegasus = netdev_priv(dev); 917 u8 reg78 = 0x04; 918 int ret; 919 920 if (wol->wolopts & ~WOL_SUPPORTED) 921 return -EINVAL; 922 923 if (wol->wolopts & WAKE_MAGIC) 924 reg78 |= 0x80; 925 if (wol->wolopts & WAKE_PHY) 926 reg78 |= 0x40; 927 /* FIXME this 0x10 bit still needs to get set in the chip... */ 928 if (wol->wolopts) 929 pegasus->eth_regs[0] |= 0x10; 930 else 931 pegasus->eth_regs[0] &= ~0x10; 932 pegasus->wolopts = wol->wolopts; 933 934 ret = set_register(pegasus, WakeupControl, reg78); 935 if (!ret) 936 ret = device_set_wakeup_enable(&pegasus->usb->dev, 937 wol->wolopts); 938 return ret; 939} 940 941static inline void pegasus_reset_wol(struct net_device *dev) 942{ 943 struct ethtool_wolinfo wol; 944 945 memset(&wol, 0, sizeof wol); 946 (void) pegasus_set_wol(dev, &wol); 947} 948 949static int 950pegasus_get_link_ksettings(struct net_device *dev, 951 struct ethtool_link_ksettings *ecmd) 952{ 953 pegasus_t *pegasus; 954 955 pegasus = netdev_priv(dev); 956 mii_ethtool_get_link_ksettings(&pegasus->mii, ecmd); 957 return 0; 958} 959 960static int 961pegasus_set_link_ksettings(struct net_device *dev, 962 const struct ethtool_link_ksettings *ecmd) 963{ 964 pegasus_t *pegasus = netdev_priv(dev); 965 return mii_ethtool_set_link_ksettings(&pegasus->mii, ecmd); 966} 967 968static int pegasus_nway_reset(struct net_device *dev) 969{ 970 pegasus_t *pegasus = netdev_priv(dev); 971 return mii_nway_restart(&pegasus->mii); 972} 973 974static u32 pegasus_get_link(struct net_device *dev) 975{ 976 pegasus_t *pegasus = netdev_priv(dev); 977 return mii_link_ok(&pegasus->mii); 978} 979 980static u32 pegasus_get_msglevel(struct net_device *dev) 981{ 982 pegasus_t *pegasus = netdev_priv(dev); 983 return pegasus->msg_enable; 984} 985 986static void pegasus_set_msglevel(struct net_device *dev, u32 v) 987{ 988 pegasus_t *pegasus = netdev_priv(dev); 989 pegasus->msg_enable = v; 990} 991 992static const struct ethtool_ops ops = { 993 .get_drvinfo = pegasus_get_drvinfo, 994 .nway_reset = pegasus_nway_reset, 995 .get_link = pegasus_get_link, 996 .get_msglevel = pegasus_get_msglevel, 997 .set_msglevel = pegasus_set_msglevel, 998 .get_wol = pegasus_get_wol, 999 .set_wol = pegasus_set_wol, 1000 .get_link_ksettings = pegasus_get_link_ksettings, 1001 .set_link_ksettings = pegasus_set_link_ksettings, 1002}; 1003 1004static int pegasus_siocdevprivate(struct net_device *net, struct ifreq *rq, 1005 void __user *udata, int cmd) 1006{ 1007 __u16 *data = (__u16 *) &rq->ifr_ifru; 1008 pegasus_t *pegasus = netdev_priv(net); 1009 int res; 1010 1011 switch (cmd) { 1012 case SIOCDEVPRIVATE: 1013 data[0] = pegasus->phy; 1014 fallthrough; 1015 case SIOCDEVPRIVATE + 1: 1016 res = read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]); 1017 break; 1018 case SIOCDEVPRIVATE + 2: 1019 if (!capable(CAP_NET_ADMIN)) 1020 return -EPERM; 1021 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, &data[2]); 1022 res = 0; 1023 break; 1024 default: 1025 res = -EOPNOTSUPP; 1026 } 1027 return res; 1028} 1029 1030static void pegasus_set_multicast(struct net_device *net) 1031{ 1032 pegasus_t *pegasus = netdev_priv(net); 1033 1034 if (net->flags & IFF_PROMISC) { 1035 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; 1036 netif_info(pegasus, link, net, "Promiscuous mode enabled\n"); 1037 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) { 1038 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; 1039 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1040 netif_dbg(pegasus, link, net, "set allmulti\n"); 1041 } else { 1042 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; 1043 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1044 } 1045 update_eth_regs_async(pegasus); 1046} 1047 1048static __u8 mii_phy_probe(pegasus_t *pegasus) 1049{ 1050 int i, ret; 1051 __u16 tmp; 1052 1053 for (i = 0; i < 32; i++) { 1054 ret = read_mii_word(pegasus, i, MII_BMSR, &tmp); 1055 if (ret < 0) 1056 goto fail; 1057 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) 1058 continue; 1059 else 1060 return i; 1061 } 1062fail: 1063 return 0xff; 1064} 1065 1066static inline void setup_pegasus_II(pegasus_t *pegasus) 1067{ 1068 int ret; 1069 __u8 data = 0xa5; 1070 1071 set_register(pegasus, Reg1d, 0); 1072 set_register(pegasus, Reg7b, 1); 1073 msleep(100); 1074 if ((pegasus->features & HAS_HOME_PNA) && mii_mode) 1075 set_register(pegasus, Reg7b, 0); 1076 else 1077 set_register(pegasus, Reg7b, 2); 1078 1079 set_register(pegasus, 0x83, data); 1080 ret = get_registers(pegasus, 0x83, 1, &data); 1081 if (ret < 0) 1082 goto fail; 1083 1084 if (data == 0xa5) 1085 pegasus->chip = 0x8513; 1086 else 1087 pegasus->chip = 0; 1088 1089 set_register(pegasus, 0x80, 0xc0); 1090 set_register(pegasus, 0x83, 0xff); 1091 set_register(pegasus, 0x84, 0x01); 1092 1093 if (pegasus->features & HAS_HOME_PNA && mii_mode) 1094 set_register(pegasus, Reg81, 6); 1095 else 1096 set_register(pegasus, Reg81, 2); 1097 1098 return; 1099fail: 1100 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__); 1101} 1102 1103static void check_carrier(struct work_struct *work) 1104{ 1105 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work); 1106 set_carrier(pegasus->net); 1107 if (!(pegasus->flags & PEGASUS_UNPLUG)) { 1108 queue_delayed_work(system_long_wq, &pegasus->carrier_check, 1109 CARRIER_CHECK_DELAY); 1110 } 1111} 1112 1113static int pegasus_blacklisted(struct usb_device *udev) 1114{ 1115 struct usb_device_descriptor *udd = &udev->descriptor; 1116 1117 /* Special quirk to keep the driver from handling the Belkin Bluetooth 1118 * dongle which happens to have the same ID. 1119 */ 1120 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) && 1121 (udd->idProduct == cpu_to_le16(0x0121)) && 1122 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) && 1123 (udd->bDeviceProtocol == 1)) 1124 return 1; 1125 1126 return 0; 1127} 1128 1129static int pegasus_probe(struct usb_interface *intf, 1130 const struct usb_device_id *id) 1131{ 1132 struct usb_device *dev = interface_to_usbdev(intf); 1133 struct net_device *net; 1134 pegasus_t *pegasus; 1135 int dev_index = id - pegasus_ids; 1136 int res = -ENOMEM; 1137 1138 if (pegasus_blacklisted(dev)) 1139 return -ENODEV; 1140 1141 net = alloc_etherdev(sizeof(struct pegasus)); 1142 if (!net) 1143 goto out; 1144 1145 pegasus = netdev_priv(net); 1146 pegasus->dev_index = dev_index; 1147 1148 res = alloc_urbs(pegasus); 1149 if (res < 0) { 1150 dev_err(&intf->dev, "can't allocate %s\n", "urbs"); 1151 goto out1; 1152 } 1153 1154 tasklet_setup(&pegasus->rx_tl, rx_fixup); 1155 1156 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier); 1157 1158 pegasus->intf = intf; 1159 pegasus->usb = dev; 1160 pegasus->net = net; 1161 1162 1163 net->watchdog_timeo = PEGASUS_TX_TIMEOUT; 1164 net->netdev_ops = &pegasus_netdev_ops; 1165 net->ethtool_ops = &ops; 1166 pegasus->mii.dev = net; 1167 pegasus->mii.mdio_read = mdio_read; 1168 pegasus->mii.mdio_write = mdio_write; 1169 pegasus->mii.phy_id_mask = 0x1f; 1170 pegasus->mii.reg_num_mask = 0x1f; 1171 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV 1172 | NETIF_MSG_PROBE | NETIF_MSG_LINK); 1173 1174 pegasus->features = usb_dev_id[dev_index].private; 1175 res = get_interrupt_interval(pegasus); 1176 if (res) 1177 goto out2; 1178 if (reset_mac(pegasus)) { 1179 dev_err(&intf->dev, "can't reset MAC\n"); 1180 res = -EIO; 1181 goto out2; 1182 } 1183 set_ethernet_addr(pegasus); 1184 if (pegasus->features & PEGASUS_II) { 1185 dev_info(&intf->dev, "setup Pegasus II specific registers\n"); 1186 setup_pegasus_II(pegasus); 1187 } 1188 pegasus->phy = mii_phy_probe(pegasus); 1189 if (pegasus->phy == 0xff) { 1190 dev_warn(&intf->dev, "can't locate MII phy, using default\n"); 1191 pegasus->phy = 1; 1192 } 1193 pegasus->mii.phy_id = pegasus->phy; 1194 usb_set_intfdata(intf, pegasus); 1195 SET_NETDEV_DEV(net, &intf->dev); 1196 pegasus_reset_wol(net); 1197 res = register_netdev(net); 1198 if (res) 1199 goto out3; 1200 queue_delayed_work(system_long_wq, &pegasus->carrier_check, 1201 CARRIER_CHECK_DELAY); 1202 dev_info(&intf->dev, "%s, %s, %pM\n", net->name, 1203 usb_dev_id[dev_index].name, net->dev_addr); 1204 return 0; 1205 1206out3: 1207 usb_set_intfdata(intf, NULL); 1208out2: 1209 free_all_urbs(pegasus); 1210out1: 1211 free_netdev(net); 1212out: 1213 return res; 1214} 1215 1216static void pegasus_disconnect(struct usb_interface *intf) 1217{ 1218 struct pegasus *pegasus = usb_get_intfdata(intf); 1219 1220 usb_set_intfdata(intf, NULL); 1221 if (!pegasus) { 1222 dev_dbg(&intf->dev, "unregistering non-bound device?\n"); 1223 return; 1224 } 1225 1226 pegasus->flags |= PEGASUS_UNPLUG; 1227 cancel_delayed_work_sync(&pegasus->carrier_check); 1228 unregister_netdev(pegasus->net); 1229 unlink_all_urbs(pegasus); 1230 free_all_urbs(pegasus); 1231 if (pegasus->rx_skb != NULL) { 1232 dev_kfree_skb(pegasus->rx_skb); 1233 pegasus->rx_skb = NULL; 1234 } 1235 free_netdev(pegasus->net); 1236} 1237 1238static int pegasus_suspend(struct usb_interface *intf, pm_message_t message) 1239{ 1240 struct pegasus *pegasus = usb_get_intfdata(intf); 1241 1242 netif_device_detach(pegasus->net); 1243 cancel_delayed_work_sync(&pegasus->carrier_check); 1244 if (netif_running(pegasus->net)) { 1245 usb_kill_urb(pegasus->rx_urb); 1246 usb_kill_urb(pegasus->intr_urb); 1247 } 1248 return 0; 1249} 1250 1251static int pegasus_resume(struct usb_interface *intf) 1252{ 1253 struct pegasus *pegasus = usb_get_intfdata(intf); 1254 1255 netif_device_attach(pegasus->net); 1256 if (netif_running(pegasus->net)) { 1257 pegasus->rx_urb->status = 0; 1258 pegasus->rx_urb->actual_length = 0; 1259 read_bulk_callback(pegasus->rx_urb); 1260 1261 pegasus->intr_urb->status = 0; 1262 pegasus->intr_urb->actual_length = 0; 1263 intr_callback(pegasus->intr_urb); 1264 } 1265 queue_delayed_work(system_long_wq, &pegasus->carrier_check, 1266 CARRIER_CHECK_DELAY); 1267 return 0; 1268} 1269 1270static const struct net_device_ops pegasus_netdev_ops = { 1271 .ndo_open = pegasus_open, 1272 .ndo_stop = pegasus_close, 1273 .ndo_siocdevprivate = pegasus_siocdevprivate, 1274 .ndo_start_xmit = pegasus_start_xmit, 1275 .ndo_set_rx_mode = pegasus_set_multicast, 1276 .ndo_tx_timeout = pegasus_tx_timeout, 1277 .ndo_set_mac_address = eth_mac_addr, 1278 .ndo_validate_addr = eth_validate_addr, 1279}; 1280 1281static struct usb_driver pegasus_driver = { 1282 .name = driver_name, 1283 .probe = pegasus_probe, 1284 .disconnect = pegasus_disconnect, 1285 .id_table = pegasus_ids, 1286 .suspend = pegasus_suspend, 1287 .resume = pegasus_resume, 1288 .disable_hub_initiated_lpm = 1, 1289}; 1290 1291static void __init parse_id(char *id) 1292{ 1293 unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0; 1294 char *token, *name = NULL; 1295 1296 if ((token = strsep(&id, ":")) != NULL) 1297 name = token; 1298 /* name now points to a null terminated string*/ 1299 if ((token = strsep(&id, ":")) != NULL) 1300 vendor_id = simple_strtoul(token, NULL, 16); 1301 if ((token = strsep(&id, ":")) != NULL) 1302 device_id = simple_strtoul(token, NULL, 16); 1303 flags = simple_strtoul(id, NULL, 16); 1304 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n", 1305 driver_name, name, vendor_id, device_id, flags); 1306 1307 if (vendor_id > 0x10000 || vendor_id == 0) 1308 return; 1309 if (device_id > 0x10000 || device_id == 0) 1310 return; 1311 1312 for (i = 0; usb_dev_id[i].name; i++); 1313 usb_dev_id[i].name = name; 1314 usb_dev_id[i].vendor = vendor_id; 1315 usb_dev_id[i].device = device_id; 1316 usb_dev_id[i].private = flags; 1317 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; 1318 pegasus_ids[i].idVendor = vendor_id; 1319 pegasus_ids[i].idProduct = device_id; 1320} 1321 1322static int __init pegasus_init(void) 1323{ 1324 pr_info("%s: " DRIVER_DESC "\n", driver_name); 1325 if (devid) 1326 parse_id(devid); 1327 return usb_register(&pegasus_driver); 1328} 1329 1330static void __exit pegasus_exit(void) 1331{ 1332 usb_deregister(&pegasus_driver); 1333} 1334 1335module_init(pegasus_init); 1336module_exit(pegasus_exit); 1337