1/* 2 * Copyright (c) 1999-2005 Petko Manolov (petkan@users.sourceforge.net) 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * ChangeLog: 9 * .... Most of the time spent on reading sources & docs. 10 * v0.2.x First official release for the Linux kernel. 11 * v0.3.0 Beutified and structured, some bugs fixed. 12 * v0.3.x URBifying bulk requests and bugfixing. First relatively 13 * stable release. Still can touch device's registers only 14 * from top-halves. 15 * v0.4.0 Control messages remained unurbified are now URBs. 16 * Now we can touch the HW at any time. 17 * v0.4.9 Control urbs again use process context to wait. Argh... 18 * Some long standing bugs (enable_net_traffic) fixed. 19 * Also nasty trick about resubmiting control urb from 20 * interrupt context used. Please let me know how it 21 * behaves. Pegasus II support added since this version. 22 * TODO: suppressing HCD warnings spewage on disconnect. 23 * v0.4.13 Ethernet address is now set at probe(), not at open() 24 * time as this seems to break dhcpd. 25 * v0.5.0 branch to 2.5.x kernels 26 * v0.5.1 ethtool support added 27 * v0.5.5 rx socket buffers are in a pool and the their allocation 28 * is out of the interrupt routine. 29 */ 30 31#include <linux/sched.h> 32#include <linux/slab.h> 33#include <linux/init.h> 34#include <linux/delay.h> 35#include <linux/netdevice.h> 36#include <linux/etherdevice.h> 37#include <linux/ethtool.h> 38#include <linux/mii.h> 39#include <linux/usb.h> 40#include <linux/module.h> 41#include <asm/byteorder.h> 42#include <asm/uaccess.h> 43#include "pegasus.h" 44 45/* 46 * Version Information 47 */ 48#define DRIVER_VERSION "v0.6.14 (2006/09/27)" 49#define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>" 50#define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver" 51 52static const char driver_name[] = "pegasus"; 53 54#undef PEGASUS_WRITE_EEPROM 55#define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \ 56 BMSR_100FULL | BMSR_ANEGCAPABLE) 57 58static int loopback; 59static int mii_mode; 60static char *devid; 61 62static struct usb_eth_dev usb_dev_id[] = { 63#define PEGASUS_DEV(pn, vid, pid, flags) \ 64 {.name = pn, .vendor = vid, .device = pid, .private = flags}, 65#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \ 66 PEGASUS_DEV(pn, vid, pid, flags) 67#include "pegasus.h" 68#undef PEGASUS_DEV 69#undef PEGASUS_DEV_CLASS 70 {NULL, 0, 0, 0}, 71 {NULL, 0, 0, 0} 72}; 73 74static struct usb_device_id pegasus_ids[] = { 75#define PEGASUS_DEV(pn, vid, pid, flags) \ 76 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid}, 77/* 78 * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product 79 * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to 80 * ignore adaptors belonging to the "Wireless" class 0xE0. For this one 81 * case anyway, seeing as the pegasus is for "Wired" adaptors. 82 */ 83#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \ 84 {.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \ 85 .idVendor = vid, .idProduct = pid, .bDeviceClass = dclass}, 86#include "pegasus.h" 87#undef PEGASUS_DEV 88#undef PEGASUS_DEV_CLASS 89 {}, 90 {} 91}; 92 93MODULE_AUTHOR(DRIVER_AUTHOR); 94MODULE_DESCRIPTION(DRIVER_DESC); 95MODULE_LICENSE("GPL"); 96module_param(loopback, bool, 0); 97module_param(mii_mode, bool, 0); 98module_param(devid, charp, 0); 99MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)"); 100MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0"); 101MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'"); 102 103/* use ethtool to change the level for any given device */ 104static int msg_level = -1; 105module_param(msg_level, int, 0); 106MODULE_PARM_DESC(msg_level, "Override default message level"); 107 108MODULE_DEVICE_TABLE(usb, pegasus_ids); 109static const struct net_device_ops pegasus_netdev_ops; 110 111static int update_eth_regs_async(pegasus_t *); 112/* Aargh!!! I _really_ hate such tweaks */ 113static void ctrl_callback(struct urb *urb) 114{ 115 pegasus_t *pegasus = urb->context; 116 int status = urb->status; 117 118 if (!pegasus) 119 return; 120 121 switch (status) { 122 case 0: 123 if (pegasus->flags & ETH_REGS_CHANGE) { 124 pegasus->flags &= ~ETH_REGS_CHANGE; 125 pegasus->flags |= ETH_REGS_CHANGED; 126 update_eth_regs_async(pegasus); 127 return; 128 } 129 break; 130 case -EINPROGRESS: 131 return; 132 case -ENOENT: 133 break; 134 default: 135 if (net_ratelimit()) 136 netif_dbg(pegasus, drv, pegasus->net, 137 "%s, status %d\n", __func__, status); 138 break; 139 } 140 pegasus->flags &= ~ETH_REGS_CHANGED; 141 wake_up(&pegasus->ctrl_wait); 142} 143 144static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, 145 void *data) 146{ 147 int ret; 148 char *buffer; 149 DECLARE_WAITQUEUE(wait, current); 150 151 buffer = kmalloc(size, GFP_KERNEL); 152 if (!buffer) { 153 netif_warn(pegasus, drv, pegasus->net, 154 "out of memory in %s\n", __func__); 155 return -ENOMEM; 156 } 157 add_wait_queue(&pegasus->ctrl_wait, &wait); 158 set_current_state(TASK_UNINTERRUPTIBLE); 159 while (pegasus->flags & ETH_REGS_CHANGED) 160 schedule(); 161 remove_wait_queue(&pegasus->ctrl_wait, &wait); 162 set_current_state(TASK_RUNNING); 163 164 pegasus->dr.bRequestType = PEGASUS_REQT_READ; 165 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS; 166 pegasus->dr.wValue = cpu_to_le16(0); 167 pegasus->dr.wIndex = cpu_to_le16(indx); 168 pegasus->dr.wLength = cpu_to_le16(size); 169 pegasus->ctrl_urb->transfer_buffer_length = size; 170 171 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 172 usb_rcvctrlpipe(pegasus->usb, 0), 173 (char *) &pegasus->dr, 174 buffer, size, ctrl_callback, pegasus); 175 176 add_wait_queue(&pegasus->ctrl_wait, &wait); 177 set_current_state(TASK_UNINTERRUPTIBLE); 178 179 /* using ATOMIC, we'd never wake up if we slept */ 180 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 181 set_current_state(TASK_RUNNING); 182 if (ret == -ENODEV) 183 netif_device_detach(pegasus->net); 184 if (net_ratelimit()) 185 netif_err(pegasus, drv, pegasus->net, 186 "%s, status %d\n", __func__, ret); 187 goto out; 188 } 189 190 schedule(); 191out: 192 remove_wait_queue(&pegasus->ctrl_wait, &wait); 193 memcpy(data, buffer, size); 194 kfree(buffer); 195 196 return ret; 197} 198 199static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size, 200 void *data) 201{ 202 int ret; 203 char *buffer; 204 DECLARE_WAITQUEUE(wait, current); 205 206 buffer = kmemdup(data, size, GFP_KERNEL); 207 if (!buffer) { 208 netif_warn(pegasus, drv, pegasus->net, 209 "out of memory in %s\n", __func__); 210 return -ENOMEM; 211 } 212 213 add_wait_queue(&pegasus->ctrl_wait, &wait); 214 set_current_state(TASK_UNINTERRUPTIBLE); 215 while (pegasus->flags & ETH_REGS_CHANGED) 216 schedule(); 217 remove_wait_queue(&pegasus->ctrl_wait, &wait); 218 set_current_state(TASK_RUNNING); 219 220 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 221 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; 222 pegasus->dr.wValue = cpu_to_le16(0); 223 pegasus->dr.wIndex = cpu_to_le16(indx); 224 pegasus->dr.wLength = cpu_to_le16(size); 225 pegasus->ctrl_urb->transfer_buffer_length = size; 226 227 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 228 usb_sndctrlpipe(pegasus->usb, 0), 229 (char *) &pegasus->dr, 230 buffer, size, ctrl_callback, pegasus); 231 232 add_wait_queue(&pegasus->ctrl_wait, &wait); 233 set_current_state(TASK_UNINTERRUPTIBLE); 234 235 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 236 if (ret == -ENODEV) 237 netif_device_detach(pegasus->net); 238 netif_err(pegasus, drv, pegasus->net, 239 "%s, status %d\n", __func__, ret); 240 goto out; 241 } 242 243 schedule(); 244out: 245 remove_wait_queue(&pegasus->ctrl_wait, &wait); 246 kfree(buffer); 247 248 return ret; 249} 250 251static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data) 252{ 253 int ret; 254 char *tmp; 255 DECLARE_WAITQUEUE(wait, current); 256 257 tmp = kmemdup(&data, 1, GFP_KERNEL); 258 if (!tmp) { 259 netif_warn(pegasus, drv, pegasus->net, 260 "out of memory in %s\n", __func__); 261 return -ENOMEM; 262 } 263 add_wait_queue(&pegasus->ctrl_wait, &wait); 264 set_current_state(TASK_UNINTERRUPTIBLE); 265 while (pegasus->flags & ETH_REGS_CHANGED) 266 schedule(); 267 remove_wait_queue(&pegasus->ctrl_wait, &wait); 268 set_current_state(TASK_RUNNING); 269 270 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 271 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG; 272 pegasus->dr.wValue = cpu_to_le16(data); 273 pegasus->dr.wIndex = cpu_to_le16(indx); 274 pegasus->dr.wLength = cpu_to_le16(1); 275 pegasus->ctrl_urb->transfer_buffer_length = 1; 276 277 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 278 usb_sndctrlpipe(pegasus->usb, 0), 279 (char *) &pegasus->dr, 280 tmp, 1, ctrl_callback, pegasus); 281 282 add_wait_queue(&pegasus->ctrl_wait, &wait); 283 set_current_state(TASK_UNINTERRUPTIBLE); 284 285 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 286 if (ret == -ENODEV) 287 netif_device_detach(pegasus->net); 288 if (net_ratelimit()) 289 netif_err(pegasus, drv, pegasus->net, 290 "%s, status %d\n", __func__, ret); 291 goto out; 292 } 293 294 schedule(); 295out: 296 remove_wait_queue(&pegasus->ctrl_wait, &wait); 297 kfree(tmp); 298 299 return ret; 300} 301 302static int update_eth_regs_async(pegasus_t *pegasus) 303{ 304 int ret; 305 306 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 307 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; 308 pegasus->dr.wValue = cpu_to_le16(0); 309 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0); 310 pegasus->dr.wLength = cpu_to_le16(3); 311 pegasus->ctrl_urb->transfer_buffer_length = 3; 312 313 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 314 usb_sndctrlpipe(pegasus->usb, 0), 315 (char *) &pegasus->dr, 316 pegasus->eth_regs, 3, ctrl_callback, pegasus); 317 318 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 319 if (ret == -ENODEV) 320 netif_device_detach(pegasus->net); 321 netif_err(pegasus, drv, pegasus->net, 322 "%s, status %d\n", __func__, ret); 323 } 324 325 return ret; 326} 327 328/* Returns 0 on success, error on failure */ 329static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd) 330{ 331 int i; 332 __u8 data[4] = { phy, 0, 0, indx }; 333 __le16 regdi; 334 int ret; 335 336 set_register(pegasus, PhyCtrl, 0); 337 set_registers(pegasus, PhyAddr, sizeof(data), data); 338 set_register(pegasus, PhyCtrl, (indx | PHY_READ)); 339 for (i = 0; i < REG_TIMEOUT; i++) { 340 ret = get_registers(pegasus, PhyCtrl, 1, data); 341 if (ret == -ESHUTDOWN) 342 goto fail; 343 if (data[0] & PHY_DONE) 344 break; 345 } 346 347 if (i >= REG_TIMEOUT) 348 goto fail; 349 350 ret = get_registers(pegasus, PhyData, 2, ®di); 351 *regd = le16_to_cpu(regdi); 352 return ret; 353 354fail: 355 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 356 357 return ret; 358} 359 360static int mdio_read(struct net_device *dev, int phy_id, int loc) 361{ 362 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev); 363 u16 res; 364 365 read_mii_word(pegasus, phy_id, loc, &res); 366 return (int)res; 367} 368 369static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 regd) 370{ 371 int i; 372 __u8 data[4] = { phy, 0, 0, indx }; 373 int ret; 374 375 data[1] = (u8) regd; 376 data[2] = (u8) (regd >> 8); 377 set_register(pegasus, PhyCtrl, 0); 378 set_registers(pegasus, PhyAddr, sizeof(data), data); 379 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE)); 380 for (i = 0; i < REG_TIMEOUT; i++) { 381 ret = get_registers(pegasus, PhyCtrl, 1, data); 382 if (ret == -ESHUTDOWN) 383 goto fail; 384 if (data[0] & PHY_DONE) 385 break; 386 } 387 388 if (i >= REG_TIMEOUT) 389 goto fail; 390 391 return ret; 392 393fail: 394 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 395 return -ETIMEDOUT; 396} 397 398static void mdio_write(struct net_device *dev, int phy_id, int loc, int val) 399{ 400 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev); 401 402 write_mii_word(pegasus, phy_id, loc, val); 403} 404 405static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata) 406{ 407 int i; 408 __u8 tmp; 409 __le16 retdatai; 410 int ret; 411 412 set_register(pegasus, EpromCtrl, 0); 413 set_register(pegasus, EpromOffset, index); 414 set_register(pegasus, EpromCtrl, EPROM_READ); 415 416 for (i = 0; i < REG_TIMEOUT; i++) { 417 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 418 if (tmp & EPROM_DONE) 419 break; 420 if (ret == -ESHUTDOWN) 421 goto fail; 422 } 423 if (i >= REG_TIMEOUT) 424 goto fail; 425 426 ret = get_registers(pegasus, EpromData, 2, &retdatai); 427 *retdata = le16_to_cpu(retdatai); 428 return ret; 429 430fail: 431 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 432 return -ETIMEDOUT; 433} 434 435#ifdef PEGASUS_WRITE_EEPROM 436static inline void enable_eprom_write(pegasus_t *pegasus) 437{ 438 __u8 tmp; 439 int ret; 440 441 get_registers(pegasus, EthCtrl2, 1, &tmp); 442 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE); 443} 444 445static inline void disable_eprom_write(pegasus_t *pegasus) 446{ 447 __u8 tmp; 448 int ret; 449 450 get_registers(pegasus, EthCtrl2, 1, &tmp); 451 set_register(pegasus, EpromCtrl, 0); 452 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE); 453} 454 455static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data) 456{ 457 int i; 458 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE }; 459 int ret; 460 __le16 le_data = cpu_to_le16(data); 461 462 set_registers(pegasus, EpromOffset, 4, d); 463 enable_eprom_write(pegasus); 464 set_register(pegasus, EpromOffset, index); 465 set_registers(pegasus, EpromData, 2, &le_data); 466 set_register(pegasus, EpromCtrl, EPROM_WRITE); 467 468 for (i = 0; i < REG_TIMEOUT; i++) { 469 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 470 if (ret == -ESHUTDOWN) 471 goto fail; 472 if (tmp & EPROM_DONE) 473 break; 474 } 475 disable_eprom_write(pegasus); 476 if (i >= REG_TIMEOUT) 477 goto fail; 478 479 return ret; 480 481fail: 482 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 483 return -ETIMEDOUT; 484} 485#endif /* PEGASUS_WRITE_EEPROM */ 486 487static inline void get_node_id(pegasus_t *pegasus, __u8 *id) 488{ 489 int i; 490 __u16 w16; 491 492 for (i = 0; i < 3; i++) { 493 read_eprom_word(pegasus, i, &w16); 494 ((__le16 *) id)[i] = cpu_to_le16(w16); 495 } 496} 497 498static void set_ethernet_addr(pegasus_t *pegasus) 499{ 500 __u8 node_id[6]; 501 502 if (pegasus->features & PEGASUS_II) { 503 get_registers(pegasus, 0x10, sizeof(node_id), node_id); 504 } else { 505 get_node_id(pegasus, node_id); 506 set_registers(pegasus, EthID, sizeof(node_id), node_id); 507 } 508 memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id)); 509} 510 511static inline int reset_mac(pegasus_t *pegasus) 512{ 513 __u8 data = 0x8; 514 int i; 515 516 set_register(pegasus, EthCtrl1, data); 517 for (i = 0; i < REG_TIMEOUT; i++) { 518 get_registers(pegasus, EthCtrl1, 1, &data); 519 if (~data & 0x08) { 520 if (loopback & 1) 521 break; 522 if (mii_mode && (pegasus->features & HAS_HOME_PNA)) 523 set_register(pegasus, Gpio1, 0x34); 524 else 525 set_register(pegasus, Gpio1, 0x26); 526 set_register(pegasus, Gpio0, pegasus->features); 527 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET); 528 break; 529 } 530 } 531 if (i == REG_TIMEOUT) 532 return -ETIMEDOUT; 533 534 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || 535 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { 536 set_register(pegasus, Gpio0, 0x24); 537 set_register(pegasus, Gpio0, 0x26); 538 } 539 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) { 540 __u16 auxmode; 541 read_mii_word(pegasus, 3, 0x1b, &auxmode); 542 write_mii_word(pegasus, 3, 0x1b, auxmode | 4); 543 } 544 545 return 0; 546} 547 548static int enable_net_traffic(struct net_device *dev, struct usb_device *usb) 549{ 550 __u16 linkpart; 551 __u8 data[4]; 552 pegasus_t *pegasus = netdev_priv(dev); 553 int ret; 554 555 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart); 556 data[0] = 0xc9; 557 data[1] = 0; 558 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL)) 559 data[1] |= 0x20; /* set full duplex */ 560 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF)) 561 data[1] |= 0x10; /* set 100 Mbps */ 562 if (mii_mode) 563 data[1] = 0; 564 data[2] = (loopback & 1) ? 0x09 : 0x01; 565 566 memcpy(pegasus->eth_regs, data, sizeof(data)); 567 ret = set_registers(pegasus, EthCtrl0, 3, data); 568 569 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || 570 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 || 571 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { 572 u16 auxmode; 573 read_mii_word(pegasus, 0, 0x1b, &auxmode); 574 write_mii_word(pegasus, 0, 0x1b, auxmode | 4); 575 } 576 577 return ret; 578} 579 580static void fill_skb_pool(pegasus_t *pegasus) 581{ 582 int i; 583 584 for (i = 0; i < RX_SKBS; i++) { 585 if (pegasus->rx_pool[i]) 586 continue; 587 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2); 588 /* 589 ** we give up if the allocation fail. the tasklet will be 590 ** rescheduled again anyway... 591 */ 592 if (pegasus->rx_pool[i] == NULL) 593 return; 594 skb_reserve(pegasus->rx_pool[i], 2); 595 } 596} 597 598static void free_skb_pool(pegasus_t *pegasus) 599{ 600 int i; 601 602 for (i = 0; i < RX_SKBS; i++) { 603 if (pegasus->rx_pool[i]) { 604 dev_kfree_skb(pegasus->rx_pool[i]); 605 pegasus->rx_pool[i] = NULL; 606 } 607 } 608} 609 610static inline struct sk_buff *pull_skb(pegasus_t * pegasus) 611{ 612 int i; 613 struct sk_buff *skb; 614 615 for (i = 0; i < RX_SKBS; i++) { 616 if (likely(pegasus->rx_pool[i] != NULL)) { 617 skb = pegasus->rx_pool[i]; 618 pegasus->rx_pool[i] = NULL; 619 return skb; 620 } 621 } 622 return NULL; 623} 624 625static void read_bulk_callback(struct urb *urb) 626{ 627 pegasus_t *pegasus = urb->context; 628 struct net_device *net; 629 int rx_status, count = urb->actual_length; 630 int status = urb->status; 631 u8 *buf = urb->transfer_buffer; 632 __u16 pkt_len; 633 634 if (!pegasus) 635 return; 636 637 net = pegasus->net; 638 if (!netif_device_present(net) || !netif_running(net)) 639 return; 640 641 switch (status) { 642 case 0: 643 break; 644 case -ETIME: 645 netif_dbg(pegasus, rx_err, net, "reset MAC\n"); 646 pegasus->flags &= ~PEGASUS_RX_BUSY; 647 break; 648 case -EPIPE: /* stall, or disconnect from TT */ 649 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n"); 650 return; 651 case -ENOENT: 652 case -ECONNRESET: 653 case -ESHUTDOWN: 654 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status); 655 return; 656 default: 657 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status); 658 goto goon; 659 } 660 661 if (!count || count < 4) 662 goto goon; 663 664 rx_status = buf[count - 2]; 665 if (rx_status & 0x1e) { 666 netif_dbg(pegasus, rx_err, net, 667 "RX packet error %x\n", rx_status); 668 pegasus->stats.rx_errors++; 669 if (rx_status & 0x06) /* long or runt */ 670 pegasus->stats.rx_length_errors++; 671 if (rx_status & 0x08) 672 pegasus->stats.rx_crc_errors++; 673 if (rx_status & 0x10) /* extra bits */ 674 pegasus->stats.rx_frame_errors++; 675 goto goon; 676 } 677 if (pegasus->chip == 0x8513) { 678 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer); 679 pkt_len &= 0x0fff; 680 pegasus->rx_skb->data += 2; 681 } else { 682 pkt_len = buf[count - 3] << 8; 683 pkt_len += buf[count - 4]; 684 pkt_len &= 0xfff; 685 pkt_len -= 8; 686 } 687 688 /* 689 * If the packet is unreasonably long, quietly drop it rather than 690 * kernel panicing by calling skb_put. 691 */ 692 if (pkt_len > PEGASUS_MTU) 693 goto goon; 694 695 /* 696 * at this point we are sure pegasus->rx_skb != NULL 697 * so we go ahead and pass up the packet. 698 */ 699 skb_put(pegasus->rx_skb, pkt_len); 700 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net); 701 netif_rx(pegasus->rx_skb); 702 pegasus->stats.rx_packets++; 703 pegasus->stats.rx_bytes += pkt_len; 704 705 if (pegasus->flags & PEGASUS_UNPLUG) 706 return; 707 708 spin_lock(&pegasus->rx_pool_lock); 709 pegasus->rx_skb = pull_skb(pegasus); 710 spin_unlock(&pegasus->rx_pool_lock); 711 712 if (pegasus->rx_skb == NULL) 713 goto tl_sched; 714goon: 715 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 716 usb_rcvbulkpipe(pegasus->usb, 1), 717 pegasus->rx_skb->data, PEGASUS_MTU + 8, 718 read_bulk_callback, pegasus); 719 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 720 if (rx_status == -ENODEV) 721 netif_device_detach(pegasus->net); 722 else if (rx_status) { 723 pegasus->flags |= PEGASUS_RX_URB_FAIL; 724 goto tl_sched; 725 } else { 726 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 727 } 728 729 return; 730 731tl_sched: 732 tasklet_schedule(&pegasus->rx_tl); 733} 734 735static void rx_fixup(unsigned long data) 736{ 737 pegasus_t *pegasus; 738 unsigned long flags; 739 int status; 740 741 pegasus = (pegasus_t *) data; 742 if (pegasus->flags & PEGASUS_UNPLUG) 743 return; 744 745 spin_lock_irqsave(&pegasus->rx_pool_lock, flags); 746 fill_skb_pool(pegasus); 747 if (pegasus->flags & PEGASUS_RX_URB_FAIL) 748 if (pegasus->rx_skb) 749 goto try_again; 750 if (pegasus->rx_skb == NULL) 751 pegasus->rx_skb = pull_skb(pegasus); 752 if (pegasus->rx_skb == NULL) { 753 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n"); 754 tasklet_schedule(&pegasus->rx_tl); 755 goto done; 756 } 757 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 758 usb_rcvbulkpipe(pegasus->usb, 1), 759 pegasus->rx_skb->data, PEGASUS_MTU + 8, 760 read_bulk_callback, pegasus); 761try_again: 762 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 763 if (status == -ENODEV) 764 netif_device_detach(pegasus->net); 765 else if (status) { 766 pegasus->flags |= PEGASUS_RX_URB_FAIL; 767 tasklet_schedule(&pegasus->rx_tl); 768 } else { 769 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 770 } 771done: 772 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags); 773} 774 775static void write_bulk_callback(struct urb *urb) 776{ 777 pegasus_t *pegasus = urb->context; 778 struct net_device *net; 779 int status = urb->status; 780 781 if (!pegasus) 782 return; 783 784 net = pegasus->net; 785 786 if (!netif_device_present(net) || !netif_running(net)) 787 return; 788 789 switch (status) { 790 case -EPIPE: 791 netif_stop_queue(net); 792 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n"); 793 return; 794 case -ENOENT: 795 case -ECONNRESET: 796 case -ESHUTDOWN: 797 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status); 798 return; 799 default: 800 netif_info(pegasus, tx_err, net, "TX status %d\n", status); 801 /* FALL THROUGH */ 802 case 0: 803 break; 804 } 805 806 net->trans_start = jiffies; /* prevent tx timeout */ 807 netif_wake_queue(net); 808} 809 810static void intr_callback(struct urb *urb) 811{ 812 pegasus_t *pegasus = urb->context; 813 struct net_device *net; 814 int res, status = urb->status; 815 816 if (!pegasus) 817 return; 818 net = pegasus->net; 819 820 switch (status) { 821 case 0: 822 break; 823 case -ECONNRESET: /* unlink */ 824 case -ENOENT: 825 case -ESHUTDOWN: 826 return; 827 default: 828 /* some Pegasus-I products report LOTS of data 829 * toggle errors... avoid log spamming 830 */ 831 netif_dbg(pegasus, timer, net, "intr status %d\n", status); 832 } 833 834 if (urb->actual_length >= 6) { 835 u8 *d = urb->transfer_buffer; 836 837 /* byte 0 == tx_status1, reg 2B */ 838 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL 839 |LATE_COL|JABBER_TIMEOUT)) { 840 pegasus->stats.tx_errors++; 841 if (d[0] & TX_UNDERRUN) 842 pegasus->stats.tx_fifo_errors++; 843 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT)) 844 pegasus->stats.tx_aborted_errors++; 845 if (d[0] & LATE_COL) 846 pegasus->stats.tx_window_errors++; 847 } 848 849 /* d[5].LINK_STATUS lies on some adapters. 850 * d[0].NO_CARRIER kicks in only with failed TX. 851 * ... so monitoring with MII may be safest. 852 */ 853 854 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */ 855 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4]; 856 } 857 858 res = usb_submit_urb(urb, GFP_ATOMIC); 859 if (res == -ENODEV) 860 netif_device_detach(pegasus->net); 861 if (res) 862 netif_err(pegasus, timer, net, 863 "can't resubmit interrupt urb, %d\n", res); 864} 865 866static void pegasus_tx_timeout(struct net_device *net) 867{ 868 pegasus_t *pegasus = netdev_priv(net); 869 netif_warn(pegasus, timer, net, "tx timeout\n"); 870 usb_unlink_urb(pegasus->tx_urb); 871 pegasus->stats.tx_errors++; 872} 873 874static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb, 875 struct net_device *net) 876{ 877 pegasus_t *pegasus = netdev_priv(net); 878 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3; 879 int res; 880 __u16 l16 = skb->len; 881 882 netif_stop_queue(net); 883 884 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16); 885 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len); 886 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb, 887 usb_sndbulkpipe(pegasus->usb, 2), 888 pegasus->tx_buff, count, 889 write_bulk_callback, pegasus); 890 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) { 891 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res); 892 switch (res) { 893 case -EPIPE: /* stall, or disconnect from TT */ 894 /* cleanup should already have been scheduled */ 895 break; 896 case -ENODEV: /* disconnect() upcoming */ 897 case -EPERM: 898 netif_device_detach(pegasus->net); 899 break; 900 default: 901 pegasus->stats.tx_errors++; 902 netif_start_queue(net); 903 } 904 } else { 905 pegasus->stats.tx_packets++; 906 pegasus->stats.tx_bytes += skb->len; 907 } 908 dev_kfree_skb(skb); 909 910 return NETDEV_TX_OK; 911} 912 913static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev) 914{ 915 return &((pegasus_t *) netdev_priv(dev))->stats; 916} 917 918static inline void disable_net_traffic(pegasus_t *pegasus) 919{ 920 __le16 tmp = cpu_to_le16(0); 921 922 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp); 923} 924 925static inline void get_interrupt_interval(pegasus_t *pegasus) 926{ 927 u16 data; 928 u8 interval; 929 930 read_eprom_word(pegasus, 4, &data); 931 interval = data >> 8; 932 if (pegasus->usb->speed != USB_SPEED_HIGH) { 933 if (interval < 0x80) { 934 netif_info(pegasus, timer, pegasus->net, 935 "intr interval changed from %ums to %ums\n", 936 interval, 0x80); 937 interval = 0x80; 938 data = (data & 0x00FF) | ((u16)interval << 8); 939#ifdef PEGASUS_WRITE_EEPROM 940 write_eprom_word(pegasus, 4, data); 941#endif 942 } 943 } 944 pegasus->intr_interval = interval; 945} 946 947static void set_carrier(struct net_device *net) 948{ 949 pegasus_t *pegasus = netdev_priv(net); 950 u16 tmp; 951 952 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp)) 953 return; 954 955 if (tmp & BMSR_LSTATUS) 956 netif_carrier_on(net); 957 else 958 netif_carrier_off(net); 959} 960 961static void free_all_urbs(pegasus_t *pegasus) 962{ 963 usb_free_urb(pegasus->intr_urb); 964 usb_free_urb(pegasus->tx_urb); 965 usb_free_urb(pegasus->rx_urb); 966 usb_free_urb(pegasus->ctrl_urb); 967} 968 969static void unlink_all_urbs(pegasus_t *pegasus) 970{ 971 usb_kill_urb(pegasus->intr_urb); 972 usb_kill_urb(pegasus->tx_urb); 973 usb_kill_urb(pegasus->rx_urb); 974 usb_kill_urb(pegasus->ctrl_urb); 975} 976 977static int alloc_urbs(pegasus_t *pegasus) 978{ 979 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 980 if (!pegasus->ctrl_urb) 981 return 0; 982 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 983 if (!pegasus->rx_urb) { 984 usb_free_urb(pegasus->ctrl_urb); 985 return 0; 986 } 987 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 988 if (!pegasus->tx_urb) { 989 usb_free_urb(pegasus->rx_urb); 990 usb_free_urb(pegasus->ctrl_urb); 991 return 0; 992 } 993 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 994 if (!pegasus->intr_urb) { 995 usb_free_urb(pegasus->tx_urb); 996 usb_free_urb(pegasus->rx_urb); 997 usb_free_urb(pegasus->ctrl_urb); 998 return 0; 999 } 1000 1001 return 1; 1002} 1003 1004static int pegasus_open(struct net_device *net) 1005{ 1006 pegasus_t *pegasus = netdev_priv(net); 1007 int res; 1008 1009 if (pegasus->rx_skb == NULL) 1010 pegasus->rx_skb = pull_skb(pegasus); 1011 /* 1012 ** Note: no point to free the pool. it is empty :-) 1013 */ 1014 if (!pegasus->rx_skb) 1015 return -ENOMEM; 1016 1017 res = set_registers(pegasus, EthID, 6, net->dev_addr); 1018 1019 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 1020 usb_rcvbulkpipe(pegasus->usb, 1), 1021 pegasus->rx_skb->data, PEGASUS_MTU + 8, 1022 read_bulk_callback, pegasus); 1023 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) { 1024 if (res == -ENODEV) 1025 netif_device_detach(pegasus->net); 1026 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res); 1027 goto exit; 1028 } 1029 1030 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb, 1031 usb_rcvintpipe(pegasus->usb, 3), 1032 pegasus->intr_buff, sizeof(pegasus->intr_buff), 1033 intr_callback, pegasus, pegasus->intr_interval); 1034 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) { 1035 if (res == -ENODEV) 1036 netif_device_detach(pegasus->net); 1037 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res); 1038 usb_kill_urb(pegasus->rx_urb); 1039 goto exit; 1040 } 1041 if ((res = enable_net_traffic(net, pegasus->usb))) { 1042 netif_dbg(pegasus, ifup, net, 1043 "can't enable_net_traffic() - %d\n", res); 1044 res = -EIO; 1045 usb_kill_urb(pegasus->rx_urb); 1046 usb_kill_urb(pegasus->intr_urb); 1047 free_skb_pool(pegasus); 1048 goto exit; 1049 } 1050 set_carrier(net); 1051 netif_start_queue(net); 1052 netif_dbg(pegasus, ifup, net, "open\n"); 1053 res = 0; 1054exit: 1055 return res; 1056} 1057 1058static int pegasus_close(struct net_device *net) 1059{ 1060 pegasus_t *pegasus = netdev_priv(net); 1061 1062 netif_stop_queue(net); 1063 if (!(pegasus->flags & PEGASUS_UNPLUG)) 1064 disable_net_traffic(pegasus); 1065 tasklet_kill(&pegasus->rx_tl); 1066 unlink_all_urbs(pegasus); 1067 1068 return 0; 1069} 1070 1071static void pegasus_get_drvinfo(struct net_device *dev, 1072 struct ethtool_drvinfo *info) 1073{ 1074 pegasus_t *pegasus = netdev_priv(dev); 1075 strncpy(info->driver, driver_name, sizeof(info->driver) - 1); 1076 strncpy(info->version, DRIVER_VERSION, sizeof(info->version) - 1); 1077 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info)); 1078} 1079 1080/* also handles three patterns of some kind in hardware */ 1081#define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) 1082 1083static void 1084pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1085{ 1086 pegasus_t *pegasus = netdev_priv(dev); 1087 1088 wol->supported = WAKE_MAGIC | WAKE_PHY; 1089 wol->wolopts = pegasus->wolopts; 1090} 1091 1092static int 1093pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1094{ 1095 pegasus_t *pegasus = netdev_priv(dev); 1096 u8 reg78 = 0x04; 1097 1098 if (wol->wolopts & ~WOL_SUPPORTED) 1099 return -EINVAL; 1100 1101 if (wol->wolopts & WAKE_MAGIC) 1102 reg78 |= 0x80; 1103 if (wol->wolopts & WAKE_PHY) 1104 reg78 |= 0x40; 1105 if (wol->wolopts) 1106 pegasus->eth_regs[0] |= 0x10; 1107 else 1108 pegasus->eth_regs[0] &= ~0x10; 1109 pegasus->wolopts = wol->wolopts; 1110 return set_register(pegasus, WakeupControl, reg78); 1111} 1112 1113static inline void pegasus_reset_wol(struct net_device *dev) 1114{ 1115 struct ethtool_wolinfo wol; 1116 1117 memset(&wol, 0, sizeof wol); 1118 (void) pegasus_set_wol(dev, &wol); 1119} 1120 1121static int 1122pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1123{ 1124 pegasus_t *pegasus; 1125 1126 pegasus = netdev_priv(dev); 1127 mii_ethtool_gset(&pegasus->mii, ecmd); 1128 return 0; 1129} 1130 1131static int 1132pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1133{ 1134 pegasus_t *pegasus = netdev_priv(dev); 1135 return mii_ethtool_sset(&pegasus->mii, ecmd); 1136} 1137 1138static int pegasus_nway_reset(struct net_device *dev) 1139{ 1140 pegasus_t *pegasus = netdev_priv(dev); 1141 return mii_nway_restart(&pegasus->mii); 1142} 1143 1144static u32 pegasus_get_link(struct net_device *dev) 1145{ 1146 pegasus_t *pegasus = netdev_priv(dev); 1147 return mii_link_ok(&pegasus->mii); 1148} 1149 1150static u32 pegasus_get_msglevel(struct net_device *dev) 1151{ 1152 pegasus_t *pegasus = netdev_priv(dev); 1153 return pegasus->msg_enable; 1154} 1155 1156static void pegasus_set_msglevel(struct net_device *dev, u32 v) 1157{ 1158 pegasus_t *pegasus = netdev_priv(dev); 1159 pegasus->msg_enable = v; 1160} 1161 1162static const struct ethtool_ops ops = { 1163 .get_drvinfo = pegasus_get_drvinfo, 1164 .get_settings = pegasus_get_settings, 1165 .set_settings = pegasus_set_settings, 1166 .nway_reset = pegasus_nway_reset, 1167 .get_link = pegasus_get_link, 1168 .get_msglevel = pegasus_get_msglevel, 1169 .set_msglevel = pegasus_set_msglevel, 1170 .get_wol = pegasus_get_wol, 1171 .set_wol = pegasus_set_wol, 1172}; 1173 1174static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd) 1175{ 1176 __u16 *data = (__u16 *) &rq->ifr_ifru; 1177 pegasus_t *pegasus = netdev_priv(net); 1178 int res; 1179 1180 switch (cmd) { 1181 case SIOCDEVPRIVATE: 1182 data[0] = pegasus->phy; 1183 case SIOCDEVPRIVATE + 1: 1184 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]); 1185 res = 0; 1186 break; 1187 case SIOCDEVPRIVATE + 2: 1188 if (!capable(CAP_NET_ADMIN)) 1189 return -EPERM; 1190 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]); 1191 res = 0; 1192 break; 1193 default: 1194 res = -EOPNOTSUPP; 1195 } 1196 return res; 1197} 1198 1199static void pegasus_set_multicast(struct net_device *net) 1200{ 1201 pegasus_t *pegasus = netdev_priv(net); 1202 1203 if (net->flags & IFF_PROMISC) { 1204 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; 1205 netif_info(pegasus, link, net, "Promiscuous mode enabled\n"); 1206 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) { 1207 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; 1208 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1209 netif_dbg(pegasus, link, net, "set allmulti\n"); 1210 } else { 1211 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; 1212 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1213 } 1214 1215 pegasus->ctrl_urb->status = 0; 1216 1217 pegasus->flags |= ETH_REGS_CHANGE; 1218 ctrl_callback(pegasus->ctrl_urb); 1219} 1220 1221static __u8 mii_phy_probe(pegasus_t *pegasus) 1222{ 1223 int i; 1224 __u16 tmp; 1225 1226 for (i = 0; i < 32; i++) { 1227 read_mii_word(pegasus, i, MII_BMSR, &tmp); 1228 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) 1229 continue; 1230 else 1231 return i; 1232 } 1233 1234 return 0xff; 1235} 1236 1237static inline void setup_pegasus_II(pegasus_t *pegasus) 1238{ 1239 __u8 data = 0xa5; 1240 1241 set_register(pegasus, Reg1d, 0); 1242 set_register(pegasus, Reg7b, 1); 1243 mdelay(100); 1244 if ((pegasus->features & HAS_HOME_PNA) && mii_mode) 1245 set_register(pegasus, Reg7b, 0); 1246 else 1247 set_register(pegasus, Reg7b, 2); 1248 1249 set_register(pegasus, 0x83, data); 1250 get_registers(pegasus, 0x83, 1, &data); 1251 1252 if (data == 0xa5) 1253 pegasus->chip = 0x8513; 1254 else 1255 pegasus->chip = 0; 1256 1257 set_register(pegasus, 0x80, 0xc0); 1258 set_register(pegasus, 0x83, 0xff); 1259 set_register(pegasus, 0x84, 0x01); 1260 1261 if (pegasus->features & HAS_HOME_PNA && mii_mode) 1262 set_register(pegasus, Reg81, 6); 1263 else 1264 set_register(pegasus, Reg81, 2); 1265} 1266 1267 1268static int pegasus_count; 1269static struct workqueue_struct *pegasus_workqueue; 1270#define CARRIER_CHECK_DELAY (2 * HZ) 1271 1272static void check_carrier(struct work_struct *work) 1273{ 1274 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work); 1275 set_carrier(pegasus->net); 1276 if (!(pegasus->flags & PEGASUS_UNPLUG)) { 1277 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1278 CARRIER_CHECK_DELAY); 1279 } 1280} 1281 1282static int pegasus_blacklisted(struct usb_device *udev) 1283{ 1284 struct usb_device_descriptor *udd = &udev->descriptor; 1285 1286 /* Special quirk to keep the driver from handling the Belkin Bluetooth 1287 * dongle which happens to have the same ID. 1288 */ 1289 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) && 1290 (udd->idProduct == cpu_to_le16(0x0121)) && 1291 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) && 1292 (udd->bDeviceProtocol == 1)) 1293 return 1; 1294 1295 return 0; 1296} 1297 1298/* we rely on probe() and remove() being serialized so we 1299 * don't need extra locking on pegasus_count. 1300 */ 1301static void pegasus_dec_workqueue(void) 1302{ 1303 pegasus_count--; 1304 if (pegasus_count == 0) { 1305 destroy_workqueue(pegasus_workqueue); 1306 pegasus_workqueue = NULL; 1307 } 1308} 1309 1310static int pegasus_probe(struct usb_interface *intf, 1311 const struct usb_device_id *id) 1312{ 1313 struct usb_device *dev = interface_to_usbdev(intf); 1314 struct net_device *net; 1315 pegasus_t *pegasus; 1316 int dev_index = id - pegasus_ids; 1317 int res = -ENOMEM; 1318 1319 if (pegasus_blacklisted(dev)) 1320 return -ENODEV; 1321 1322 if (pegasus_count == 0) { 1323 pegasus_workqueue = create_singlethread_workqueue("pegasus"); 1324 if (!pegasus_workqueue) 1325 return -ENOMEM; 1326 } 1327 pegasus_count++; 1328 1329 usb_get_dev(dev); 1330 1331 net = alloc_etherdev(sizeof(struct pegasus)); 1332 if (!net) { 1333 dev_err(&intf->dev, "can't allocate %s\n", "device"); 1334 goto out; 1335 } 1336 1337 pegasus = netdev_priv(net); 1338 pegasus->dev_index = dev_index; 1339 init_waitqueue_head(&pegasus->ctrl_wait); 1340 1341 if (!alloc_urbs(pegasus)) { 1342 dev_err(&intf->dev, "can't allocate %s\n", "urbs"); 1343 goto out1; 1344 } 1345 1346 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus); 1347 1348 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier); 1349 1350 pegasus->intf = intf; 1351 pegasus->usb = dev; 1352 pegasus->net = net; 1353 1354 1355 net->watchdog_timeo = PEGASUS_TX_TIMEOUT; 1356 net->netdev_ops = &pegasus_netdev_ops; 1357 SET_ETHTOOL_OPS(net, &ops); 1358 pegasus->mii.dev = net; 1359 pegasus->mii.mdio_read = mdio_read; 1360 pegasus->mii.mdio_write = mdio_write; 1361 pegasus->mii.phy_id_mask = 0x1f; 1362 pegasus->mii.reg_num_mask = 0x1f; 1363 spin_lock_init(&pegasus->rx_pool_lock); 1364 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV 1365 | NETIF_MSG_PROBE | NETIF_MSG_LINK); 1366 1367 pegasus->features = usb_dev_id[dev_index].private; 1368 get_interrupt_interval(pegasus); 1369 if (reset_mac(pegasus)) { 1370 dev_err(&intf->dev, "can't reset MAC\n"); 1371 res = -EIO; 1372 goto out2; 1373 } 1374 set_ethernet_addr(pegasus); 1375 fill_skb_pool(pegasus); 1376 if (pegasus->features & PEGASUS_II) { 1377 dev_info(&intf->dev, "setup Pegasus II specific registers\n"); 1378 setup_pegasus_II(pegasus); 1379 } 1380 pegasus->phy = mii_phy_probe(pegasus); 1381 if (pegasus->phy == 0xff) { 1382 dev_warn(&intf->dev, "can't locate MII phy, using default\n"); 1383 pegasus->phy = 1; 1384 } 1385 pegasus->mii.phy_id = pegasus->phy; 1386 usb_set_intfdata(intf, pegasus); 1387 SET_NETDEV_DEV(net, &intf->dev); 1388 pegasus_reset_wol(net); 1389 res = register_netdev(net); 1390 if (res) 1391 goto out3; 1392 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1393 CARRIER_CHECK_DELAY); 1394 1395 dev_info(&intf->dev, "%s, %s, %pM\n", 1396 net->name, 1397 usb_dev_id[dev_index].name, 1398 net->dev_addr); 1399 return 0; 1400 1401out3: 1402 usb_set_intfdata(intf, NULL); 1403 free_skb_pool(pegasus); 1404out2: 1405 free_all_urbs(pegasus); 1406out1: 1407 free_netdev(net); 1408out: 1409 usb_put_dev(dev); 1410 pegasus_dec_workqueue(); 1411 return res; 1412} 1413 1414static void pegasus_disconnect(struct usb_interface *intf) 1415{ 1416 struct pegasus *pegasus = usb_get_intfdata(intf); 1417 1418 usb_set_intfdata(intf, NULL); 1419 if (!pegasus) { 1420 dev_dbg(&intf->dev, "unregistering non-bound device?\n"); 1421 return; 1422 } 1423 1424 pegasus->flags |= PEGASUS_UNPLUG; 1425 cancel_delayed_work(&pegasus->carrier_check); 1426 unregister_netdev(pegasus->net); 1427 usb_put_dev(interface_to_usbdev(intf)); 1428 unlink_all_urbs(pegasus); 1429 free_all_urbs(pegasus); 1430 free_skb_pool(pegasus); 1431 if (pegasus->rx_skb != NULL) { 1432 dev_kfree_skb(pegasus->rx_skb); 1433 pegasus->rx_skb = NULL; 1434 } 1435 free_netdev(pegasus->net); 1436 pegasus_dec_workqueue(); 1437} 1438 1439static int pegasus_suspend(struct usb_interface *intf, pm_message_t message) 1440{ 1441 struct pegasus *pegasus = usb_get_intfdata(intf); 1442 1443 netif_device_detach(pegasus->net); 1444 cancel_delayed_work(&pegasus->carrier_check); 1445 if (netif_running(pegasus->net)) { 1446 usb_kill_urb(pegasus->rx_urb); 1447 usb_kill_urb(pegasus->intr_urb); 1448 } 1449 return 0; 1450} 1451 1452static int pegasus_resume(struct usb_interface *intf) 1453{ 1454 struct pegasus *pegasus = usb_get_intfdata(intf); 1455 1456 netif_device_attach(pegasus->net); 1457 if (netif_running(pegasus->net)) { 1458 pegasus->rx_urb->status = 0; 1459 pegasus->rx_urb->actual_length = 0; 1460 read_bulk_callback(pegasus->rx_urb); 1461 1462 pegasus->intr_urb->status = 0; 1463 pegasus->intr_urb->actual_length = 0; 1464 intr_callback(pegasus->intr_urb); 1465 } 1466 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1467 CARRIER_CHECK_DELAY); 1468 return 0; 1469} 1470 1471static const struct net_device_ops pegasus_netdev_ops = { 1472 .ndo_open = pegasus_open, 1473 .ndo_stop = pegasus_close, 1474 .ndo_do_ioctl = pegasus_ioctl, 1475 .ndo_start_xmit = pegasus_start_xmit, 1476 .ndo_set_multicast_list = pegasus_set_multicast, 1477 .ndo_get_stats = pegasus_netdev_stats, 1478 .ndo_tx_timeout = pegasus_tx_timeout, 1479 .ndo_change_mtu = eth_change_mtu, 1480 .ndo_set_mac_address = eth_mac_addr, 1481 .ndo_validate_addr = eth_validate_addr, 1482}; 1483 1484static struct usb_driver pegasus_driver = { 1485 .name = driver_name, 1486 .probe = pegasus_probe, 1487 .disconnect = pegasus_disconnect, 1488 .id_table = pegasus_ids, 1489 .suspend = pegasus_suspend, 1490 .resume = pegasus_resume, 1491}; 1492 1493static void __init parse_id(char *id) 1494{ 1495 unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0; 1496 char *token, *name = NULL; 1497 1498 if ((token = strsep(&id, ":")) != NULL) 1499 name = token; 1500 /* name now points to a null terminated string*/ 1501 if ((token = strsep(&id, ":")) != NULL) 1502 vendor_id = simple_strtoul(token, NULL, 16); 1503 if ((token = strsep(&id, ":")) != NULL) 1504 device_id = simple_strtoul(token, NULL, 16); 1505 flags = simple_strtoul(id, NULL, 16); 1506 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n", 1507 driver_name, name, vendor_id, device_id, flags); 1508 1509 if (vendor_id > 0x10000 || vendor_id == 0) 1510 return; 1511 if (device_id > 0x10000 || device_id == 0) 1512 return; 1513 1514 for (i = 0; usb_dev_id[i].name; i++); 1515 usb_dev_id[i].name = name; 1516 usb_dev_id[i].vendor = vendor_id; 1517 usb_dev_id[i].device = device_id; 1518 usb_dev_id[i].private = flags; 1519 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; 1520 pegasus_ids[i].idVendor = vendor_id; 1521 pegasus_ids[i].idProduct = device_id; 1522} 1523 1524static int __init pegasus_init(void) 1525{ 1526 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION); 1527 if (devid) 1528 parse_id(devid); 1529 return usb_register(&pegasus_driver); 1530} 1531 1532static void __exit pegasus_exit(void) 1533{ 1534 usb_deregister(&pegasus_driver); 1535} 1536 1537module_init(pegasus_init); 1538module_exit(pegasus_exit); 1539