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 52 static 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 58 static bool loopback; 59 static bool mii_mode; 60 static char *devid; 61 62 static 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 74 static 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 93 MODULE_AUTHOR(DRIVER_AUTHOR); 94 MODULE_DESCRIPTION(DRIVER_DESC); 95 MODULE_LICENSE("GPL"); 96 module_param(loopback, bool, 0); 97 module_param(mii_mode, bool, 0); 98 module_param(devid, charp, 0); 99 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)"); 100 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0"); 101 MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'"); 102 103 /* use ethtool to change the level for any given device */ 104 static int msg_level = -1; 105 module_param(msg_level, int, 0); 106 MODULE_PARM_DESC(msg_level, "Override default message level"); 107 108 MODULE_DEVICE_TABLE(usb, pegasus_ids); 109 static const struct net_device_ops pegasus_netdev_ops; 110 111 static int update_eth_regs_async(pegasus_t *); 112 /* Aargh!!! I _really_ hate such tweaks */ 113 static 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 } 143 144 static 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 return -ENOMEM; 154 155 add_wait_queue(&pegasus->ctrl_wait, &wait); 156 set_current_state(TASK_UNINTERRUPTIBLE); 157 while (pegasus->flags & ETH_REGS_CHANGED) 158 schedule(); 159 remove_wait_queue(&pegasus->ctrl_wait, &wait); 160 set_current_state(TASK_RUNNING); 161 162 pegasus->dr.bRequestType = PEGASUS_REQT_READ; 163 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS; 164 pegasus->dr.wValue = cpu_to_le16(0); 165 pegasus->dr.wIndex = cpu_to_le16(indx); 166 pegasus->dr.wLength = cpu_to_le16(size); 167 pegasus->ctrl_urb->transfer_buffer_length = size; 168 169 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 170 usb_rcvctrlpipe(pegasus->usb, 0), 171 (char *) &pegasus->dr, 172 buffer, size, ctrl_callback, pegasus); 173 174 add_wait_queue(&pegasus->ctrl_wait, &wait); 175 set_current_state(TASK_UNINTERRUPTIBLE); 176 177 /* using ATOMIC, we'd never wake up if we slept */ 178 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 179 set_current_state(TASK_RUNNING); 180 if (ret == -ENODEV) 181 netif_device_detach(pegasus->net); 182 if (net_ratelimit()) 183 netif_err(pegasus, drv, pegasus->net, 184 "%s, status %d\n", __func__, ret); 185 goto out; 186 } 187 188 schedule(); 189 out: 190 remove_wait_queue(&pegasus->ctrl_wait, &wait); 191 memcpy(data, buffer, size); 192 kfree(buffer); 193 194 return ret; 195 } 196 197 static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size, 198 void *data) 199 { 200 int ret; 201 char *buffer; 202 DECLARE_WAITQUEUE(wait, current); 203 204 buffer = kmemdup(data, size, GFP_KERNEL); 205 if (!buffer) { 206 netif_warn(pegasus, drv, pegasus->net, 207 "out of memory in %s\n", __func__); 208 return -ENOMEM; 209 } 210 211 add_wait_queue(&pegasus->ctrl_wait, &wait); 212 set_current_state(TASK_UNINTERRUPTIBLE); 213 while (pegasus->flags & ETH_REGS_CHANGED) 214 schedule(); 215 remove_wait_queue(&pegasus->ctrl_wait, &wait); 216 set_current_state(TASK_RUNNING); 217 218 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 219 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; 220 pegasus->dr.wValue = cpu_to_le16(0); 221 pegasus->dr.wIndex = cpu_to_le16(indx); 222 pegasus->dr.wLength = cpu_to_le16(size); 223 pegasus->ctrl_urb->transfer_buffer_length = size; 224 225 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 226 usb_sndctrlpipe(pegasus->usb, 0), 227 (char *) &pegasus->dr, 228 buffer, size, ctrl_callback, pegasus); 229 230 add_wait_queue(&pegasus->ctrl_wait, &wait); 231 set_current_state(TASK_UNINTERRUPTIBLE); 232 233 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 234 if (ret == -ENODEV) 235 netif_device_detach(pegasus->net); 236 netif_err(pegasus, drv, pegasus->net, 237 "%s, status %d\n", __func__, ret); 238 goto out; 239 } 240 241 schedule(); 242 out: 243 remove_wait_queue(&pegasus->ctrl_wait, &wait); 244 kfree(buffer); 245 246 return ret; 247 } 248 249 static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data) 250 { 251 int ret; 252 char *tmp; 253 DECLARE_WAITQUEUE(wait, current); 254 255 tmp = kmemdup(&data, 1, GFP_KERNEL); 256 if (!tmp) { 257 netif_warn(pegasus, drv, pegasus->net, 258 "out of memory in %s\n", __func__); 259 return -ENOMEM; 260 } 261 add_wait_queue(&pegasus->ctrl_wait, &wait); 262 set_current_state(TASK_UNINTERRUPTIBLE); 263 while (pegasus->flags & ETH_REGS_CHANGED) 264 schedule(); 265 remove_wait_queue(&pegasus->ctrl_wait, &wait); 266 set_current_state(TASK_RUNNING); 267 268 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 269 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG; 270 pegasus->dr.wValue = cpu_to_le16(data); 271 pegasus->dr.wIndex = cpu_to_le16(indx); 272 pegasus->dr.wLength = cpu_to_le16(1); 273 pegasus->ctrl_urb->transfer_buffer_length = 1; 274 275 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 276 usb_sndctrlpipe(pegasus->usb, 0), 277 (char *) &pegasus->dr, 278 tmp, 1, ctrl_callback, pegasus); 279 280 add_wait_queue(&pegasus->ctrl_wait, &wait); 281 set_current_state(TASK_UNINTERRUPTIBLE); 282 283 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 284 if (ret == -ENODEV) 285 netif_device_detach(pegasus->net); 286 if (net_ratelimit()) 287 netif_err(pegasus, drv, pegasus->net, 288 "%s, status %d\n", __func__, ret); 289 goto out; 290 } 291 292 schedule(); 293 out: 294 remove_wait_queue(&pegasus->ctrl_wait, &wait); 295 kfree(tmp); 296 297 return ret; 298 } 299 300 static int update_eth_regs_async(pegasus_t *pegasus) 301 { 302 int ret; 303 304 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 305 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; 306 pegasus->dr.wValue = cpu_to_le16(0); 307 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0); 308 pegasus->dr.wLength = cpu_to_le16(3); 309 pegasus->ctrl_urb->transfer_buffer_length = 3; 310 311 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 312 usb_sndctrlpipe(pegasus->usb, 0), 313 (char *) &pegasus->dr, 314 pegasus->eth_regs, 3, ctrl_callback, pegasus); 315 316 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 317 if (ret == -ENODEV) 318 netif_device_detach(pegasus->net); 319 netif_err(pegasus, drv, pegasus->net, 320 "%s, status %d\n", __func__, ret); 321 } 322 323 return ret; 324 } 325 326 /* Returns 0 on success, error on failure */ 327 static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd) 328 { 329 int i; 330 __u8 data[4] = { phy, 0, 0, indx }; 331 __le16 regdi; 332 int ret; 333 334 set_register(pegasus, PhyCtrl, 0); 335 set_registers(pegasus, PhyAddr, sizeof(data), data); 336 set_register(pegasus, PhyCtrl, (indx | PHY_READ)); 337 for (i = 0; i < REG_TIMEOUT; i++) { 338 ret = get_registers(pegasus, PhyCtrl, 1, data); 339 if (ret == -ESHUTDOWN) 340 goto fail; 341 if (data[0] & PHY_DONE) 342 break; 343 } 344 345 if (i >= REG_TIMEOUT) 346 goto fail; 347 348 ret = get_registers(pegasus, PhyData, 2, ®di); 349 *regd = le16_to_cpu(regdi); 350 return ret; 351 352 fail: 353 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 354 355 return ret; 356 } 357 358 static int mdio_read(struct net_device *dev, int phy_id, int loc) 359 { 360 pegasus_t *pegasus = netdev_priv(dev); 361 u16 res; 362 363 read_mii_word(pegasus, phy_id, loc, &res); 364 return (int)res; 365 } 366 367 static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 regd) 368 { 369 int i; 370 __u8 data[4] = { phy, 0, 0, indx }; 371 int ret; 372 373 data[1] = (u8) regd; 374 data[2] = (u8) (regd >> 8); 375 set_register(pegasus, PhyCtrl, 0); 376 set_registers(pegasus, PhyAddr, sizeof(data), data); 377 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE)); 378 for (i = 0; i < REG_TIMEOUT; i++) { 379 ret = get_registers(pegasus, PhyCtrl, 1, data); 380 if (ret == -ESHUTDOWN) 381 goto fail; 382 if (data[0] & PHY_DONE) 383 break; 384 } 385 386 if (i >= REG_TIMEOUT) 387 goto fail; 388 389 return ret; 390 391 fail: 392 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 393 return -ETIMEDOUT; 394 } 395 396 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val) 397 { 398 pegasus_t *pegasus = netdev_priv(dev); 399 400 write_mii_word(pegasus, phy_id, loc, val); 401 } 402 403 static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata) 404 { 405 int i; 406 __u8 tmp; 407 __le16 retdatai; 408 int ret; 409 410 set_register(pegasus, EpromCtrl, 0); 411 set_register(pegasus, EpromOffset, index); 412 set_register(pegasus, EpromCtrl, EPROM_READ); 413 414 for (i = 0; i < REG_TIMEOUT; i++) { 415 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 416 if (tmp & EPROM_DONE) 417 break; 418 if (ret == -ESHUTDOWN) 419 goto fail; 420 } 421 if (i >= REG_TIMEOUT) 422 goto fail; 423 424 ret = get_registers(pegasus, EpromData, 2, &retdatai); 425 *retdata = le16_to_cpu(retdatai); 426 return ret; 427 428 fail: 429 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 430 return -ETIMEDOUT; 431 } 432 433 #ifdef PEGASUS_WRITE_EEPROM 434 static inline void enable_eprom_write(pegasus_t *pegasus) 435 { 436 __u8 tmp; 437 int ret; 438 439 get_registers(pegasus, EthCtrl2, 1, &tmp); 440 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE); 441 } 442 443 static inline void disable_eprom_write(pegasus_t *pegasus) 444 { 445 __u8 tmp; 446 int ret; 447 448 get_registers(pegasus, EthCtrl2, 1, &tmp); 449 set_register(pegasus, EpromCtrl, 0); 450 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE); 451 } 452 453 static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data) 454 { 455 int i; 456 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE }; 457 int ret; 458 __le16 le_data = cpu_to_le16(data); 459 460 set_registers(pegasus, EpromOffset, 4, d); 461 enable_eprom_write(pegasus); 462 set_register(pegasus, EpromOffset, index); 463 set_registers(pegasus, EpromData, 2, &le_data); 464 set_register(pegasus, EpromCtrl, EPROM_WRITE); 465 466 for (i = 0; i < REG_TIMEOUT; i++) { 467 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 468 if (ret == -ESHUTDOWN) 469 goto fail; 470 if (tmp & EPROM_DONE) 471 break; 472 } 473 disable_eprom_write(pegasus); 474 if (i >= REG_TIMEOUT) 475 goto fail; 476 477 return ret; 478 479 fail: 480 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 481 return -ETIMEDOUT; 482 } 483 #endif /* PEGASUS_WRITE_EEPROM */ 484 485 static inline void get_node_id(pegasus_t *pegasus, __u8 *id) 486 { 487 int i; 488 __u16 w16; 489 490 for (i = 0; i < 3; i++) { 491 read_eprom_word(pegasus, i, &w16); 492 ((__le16 *) id)[i] = cpu_to_le16(w16); 493 } 494 } 495 496 static void set_ethernet_addr(pegasus_t *pegasus) 497 { 498 __u8 node_id[6]; 499 500 if (pegasus->features & PEGASUS_II) { 501 get_registers(pegasus, 0x10, sizeof(node_id), node_id); 502 } else { 503 get_node_id(pegasus, node_id); 504 set_registers(pegasus, EthID, sizeof(node_id), node_id); 505 } 506 memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id)); 507 } 508 509 static inline int reset_mac(pegasus_t *pegasus) 510 { 511 __u8 data = 0x8; 512 int i; 513 514 set_register(pegasus, EthCtrl1, data); 515 for (i = 0; i < REG_TIMEOUT; i++) { 516 get_registers(pegasus, EthCtrl1, 1, &data); 517 if (~data & 0x08) { 518 if (loopback) 519 break; 520 if (mii_mode && (pegasus->features & HAS_HOME_PNA)) 521 set_register(pegasus, Gpio1, 0x34); 522 else 523 set_register(pegasus, Gpio1, 0x26); 524 set_register(pegasus, Gpio0, pegasus->features); 525 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET); 526 break; 527 } 528 } 529 if (i == REG_TIMEOUT) 530 return -ETIMEDOUT; 531 532 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || 533 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { 534 set_register(pegasus, Gpio0, 0x24); 535 set_register(pegasus, Gpio0, 0x26); 536 } 537 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) { 538 __u16 auxmode; 539 read_mii_word(pegasus, 3, 0x1b, &auxmode); 540 write_mii_word(pegasus, 3, 0x1b, auxmode | 4); 541 } 542 543 return 0; 544 } 545 546 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb) 547 { 548 __u16 linkpart; 549 __u8 data[4]; 550 pegasus_t *pegasus = netdev_priv(dev); 551 int ret; 552 553 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart); 554 data[0] = 0xc9; 555 data[1] = 0; 556 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL)) 557 data[1] |= 0x20; /* set full duplex */ 558 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF)) 559 data[1] |= 0x10; /* set 100 Mbps */ 560 if (mii_mode) 561 data[1] = 0; 562 data[2] = loopback ? 0x09 : 0x01; 563 564 memcpy(pegasus->eth_regs, data, sizeof(data)); 565 ret = set_registers(pegasus, EthCtrl0, 3, data); 566 567 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || 568 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 || 569 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { 570 u16 auxmode; 571 read_mii_word(pegasus, 0, 0x1b, &auxmode); 572 write_mii_word(pegasus, 0, 0x1b, auxmode | 4); 573 } 574 575 return ret; 576 } 577 578 static void fill_skb_pool(pegasus_t *pegasus) 579 { 580 int i; 581 582 for (i = 0; i < RX_SKBS; i++) { 583 if (pegasus->rx_pool[i]) 584 continue; 585 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2); 586 /* 587 ** we give up if the allocation fail. the tasklet will be 588 ** rescheduled again anyway... 589 */ 590 if (pegasus->rx_pool[i] == NULL) 591 return; 592 skb_reserve(pegasus->rx_pool[i], 2); 593 } 594 } 595 596 static void free_skb_pool(pegasus_t *pegasus) 597 { 598 int i; 599 600 for (i = 0; i < RX_SKBS; i++) { 601 if (pegasus->rx_pool[i]) { 602 dev_kfree_skb(pegasus->rx_pool[i]); 603 pegasus->rx_pool[i] = NULL; 604 } 605 } 606 } 607 608 static inline struct sk_buff *pull_skb(pegasus_t * pegasus) 609 { 610 int i; 611 struct sk_buff *skb; 612 613 for (i = 0; i < RX_SKBS; i++) { 614 if (likely(pegasus->rx_pool[i] != NULL)) { 615 skb = pegasus->rx_pool[i]; 616 pegasus->rx_pool[i] = NULL; 617 return skb; 618 } 619 } 620 return NULL; 621 } 622 623 static void read_bulk_callback(struct urb *urb) 624 { 625 pegasus_t *pegasus = urb->context; 626 struct net_device *net; 627 int rx_status, count = urb->actual_length; 628 int status = urb->status; 629 u8 *buf = urb->transfer_buffer; 630 __u16 pkt_len; 631 632 if (!pegasus) 633 return; 634 635 net = pegasus->net; 636 if (!netif_device_present(net) || !netif_running(net)) 637 return; 638 639 switch (status) { 640 case 0: 641 break; 642 case -ETIME: 643 netif_dbg(pegasus, rx_err, net, "reset MAC\n"); 644 pegasus->flags &= ~PEGASUS_RX_BUSY; 645 break; 646 case -EPIPE: /* stall, or disconnect from TT */ 647 /* FIXME schedule work to clear the halt */ 648 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n"); 649 return; 650 case -ENOENT: 651 case -ECONNRESET: 652 case -ESHUTDOWN: 653 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status); 654 return; 655 default: 656 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status); 657 goto goon; 658 } 659 660 if (!count || count < 4) 661 goto goon; 662 663 rx_status = buf[count - 2]; 664 if (rx_status & 0x1e) { 665 netif_dbg(pegasus, rx_err, net, 666 "RX packet error %x\n", rx_status); 667 pegasus->stats.rx_errors++; 668 if (rx_status & 0x06) /* long or runt */ 669 pegasus->stats.rx_length_errors++; 670 if (rx_status & 0x08) 671 pegasus->stats.rx_crc_errors++; 672 if (rx_status & 0x10) /* extra bits */ 673 pegasus->stats.rx_frame_errors++; 674 goto goon; 675 } 676 if (pegasus->chip == 0x8513) { 677 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer); 678 pkt_len &= 0x0fff; 679 pegasus->rx_skb->data += 2; 680 } else { 681 pkt_len = buf[count - 3] << 8; 682 pkt_len += buf[count - 4]; 683 pkt_len &= 0xfff; 684 pkt_len -= 8; 685 } 686 687 /* 688 * If the packet is unreasonably long, quietly drop it rather than 689 * kernel panicing by calling skb_put. 690 */ 691 if (pkt_len > PEGASUS_MTU) 692 goto goon; 693 694 /* 695 * at this point we are sure pegasus->rx_skb != NULL 696 * so we go ahead and pass up the packet. 697 */ 698 skb_put(pegasus->rx_skb, pkt_len); 699 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net); 700 netif_rx(pegasus->rx_skb); 701 pegasus->stats.rx_packets++; 702 pegasus->stats.rx_bytes += pkt_len; 703 704 if (pegasus->flags & PEGASUS_UNPLUG) 705 return; 706 707 spin_lock(&pegasus->rx_pool_lock); 708 pegasus->rx_skb = pull_skb(pegasus); 709 spin_unlock(&pegasus->rx_pool_lock); 710 711 if (pegasus->rx_skb == NULL) 712 goto tl_sched; 713 goon: 714 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 715 usb_rcvbulkpipe(pegasus->usb, 1), 716 pegasus->rx_skb->data, PEGASUS_MTU + 8, 717 read_bulk_callback, pegasus); 718 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 719 if (rx_status == -ENODEV) 720 netif_device_detach(pegasus->net); 721 else if (rx_status) { 722 pegasus->flags |= PEGASUS_RX_URB_FAIL; 723 goto tl_sched; 724 } else { 725 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 726 } 727 728 return; 729 730 tl_sched: 731 tasklet_schedule(&pegasus->rx_tl); 732 } 733 734 static void rx_fixup(unsigned long data) 735 { 736 pegasus_t *pegasus; 737 unsigned long flags; 738 int status; 739 740 pegasus = (pegasus_t *) data; 741 if (pegasus->flags & PEGASUS_UNPLUG) 742 return; 743 744 spin_lock_irqsave(&pegasus->rx_pool_lock, flags); 745 fill_skb_pool(pegasus); 746 if (pegasus->flags & PEGASUS_RX_URB_FAIL) 747 if (pegasus->rx_skb) 748 goto try_again; 749 if (pegasus->rx_skb == NULL) 750 pegasus->rx_skb = pull_skb(pegasus); 751 if (pegasus->rx_skb == NULL) { 752 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n"); 753 tasklet_schedule(&pegasus->rx_tl); 754 goto done; 755 } 756 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 757 usb_rcvbulkpipe(pegasus->usb, 1), 758 pegasus->rx_skb->data, PEGASUS_MTU + 8, 759 read_bulk_callback, pegasus); 760 try_again: 761 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 762 if (status == -ENODEV) 763 netif_device_detach(pegasus->net); 764 else if (status) { 765 pegasus->flags |= PEGASUS_RX_URB_FAIL; 766 tasklet_schedule(&pegasus->rx_tl); 767 } else { 768 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 769 } 770 done: 771 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags); 772 } 773 774 static void write_bulk_callback(struct urb *urb) 775 { 776 pegasus_t *pegasus = urb->context; 777 struct net_device *net; 778 int status = urb->status; 779 780 if (!pegasus) 781 return; 782 783 net = pegasus->net; 784 785 if (!netif_device_present(net) || !netif_running(net)) 786 return; 787 788 switch (status) { 789 case -EPIPE: 790 /* FIXME schedule_work() to clear the tx halt */ 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 } 809 810 static 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 } 865 866 static 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 } 873 874 static 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 } 912 913 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev) 914 { 915 return &((pegasus_t *) netdev_priv(dev))->stats; 916 } 917 918 static 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 } 924 925 static 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 } 946 947 static 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 } 960 961 static 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 } 968 969 static 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 } 976 977 static 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 1004 static 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; 1054 exit: 1055 return res; 1056 } 1057 1058 static 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 1071 static void pegasus_get_drvinfo(struct net_device *dev, 1072 struct ethtool_drvinfo *info) 1073 { 1074 pegasus_t *pegasus = netdev_priv(dev); 1075 1076 strlcpy(info->driver, driver_name, sizeof(info->driver)); 1077 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version)); 1078 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info)); 1079 } 1080 1081 /* also handles three patterns of some kind in hardware */ 1082 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) 1083 1084 static void 1085 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1086 { 1087 pegasus_t *pegasus = netdev_priv(dev); 1088 1089 wol->supported = WAKE_MAGIC | WAKE_PHY; 1090 wol->wolopts = pegasus->wolopts; 1091 } 1092 1093 static int 1094 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1095 { 1096 pegasus_t *pegasus = netdev_priv(dev); 1097 u8 reg78 = 0x04; 1098 int ret; 1099 1100 if (wol->wolopts & ~WOL_SUPPORTED) 1101 return -EINVAL; 1102 1103 if (wol->wolopts & WAKE_MAGIC) 1104 reg78 |= 0x80; 1105 if (wol->wolopts & WAKE_PHY) 1106 reg78 |= 0x40; 1107 /* FIXME this 0x10 bit still needs to get set in the chip... */ 1108 if (wol->wolopts) 1109 pegasus->eth_regs[0] |= 0x10; 1110 else 1111 pegasus->eth_regs[0] &= ~0x10; 1112 pegasus->wolopts = wol->wolopts; 1113 1114 ret = set_register(pegasus, WakeupControl, reg78); 1115 if (!ret) 1116 ret = device_set_wakeup_enable(&pegasus->usb->dev, 1117 wol->wolopts); 1118 return ret; 1119 } 1120 1121 static inline void pegasus_reset_wol(struct net_device *dev) 1122 { 1123 struct ethtool_wolinfo wol; 1124 1125 memset(&wol, 0, sizeof wol); 1126 (void) pegasus_set_wol(dev, &wol); 1127 } 1128 1129 static int 1130 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1131 { 1132 pegasus_t *pegasus; 1133 1134 pegasus = netdev_priv(dev); 1135 mii_ethtool_gset(&pegasus->mii, ecmd); 1136 return 0; 1137 } 1138 1139 static int 1140 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1141 { 1142 pegasus_t *pegasus = netdev_priv(dev); 1143 return mii_ethtool_sset(&pegasus->mii, ecmd); 1144 } 1145 1146 static int pegasus_nway_reset(struct net_device *dev) 1147 { 1148 pegasus_t *pegasus = netdev_priv(dev); 1149 return mii_nway_restart(&pegasus->mii); 1150 } 1151 1152 static u32 pegasus_get_link(struct net_device *dev) 1153 { 1154 pegasus_t *pegasus = netdev_priv(dev); 1155 return mii_link_ok(&pegasus->mii); 1156 } 1157 1158 static u32 pegasus_get_msglevel(struct net_device *dev) 1159 { 1160 pegasus_t *pegasus = netdev_priv(dev); 1161 return pegasus->msg_enable; 1162 } 1163 1164 static void pegasus_set_msglevel(struct net_device *dev, u32 v) 1165 { 1166 pegasus_t *pegasus = netdev_priv(dev); 1167 pegasus->msg_enable = v; 1168 } 1169 1170 static const struct ethtool_ops ops = { 1171 .get_drvinfo = pegasus_get_drvinfo, 1172 .get_settings = pegasus_get_settings, 1173 .set_settings = pegasus_set_settings, 1174 .nway_reset = pegasus_nway_reset, 1175 .get_link = pegasus_get_link, 1176 .get_msglevel = pegasus_get_msglevel, 1177 .set_msglevel = pegasus_set_msglevel, 1178 .get_wol = pegasus_get_wol, 1179 .set_wol = pegasus_set_wol, 1180 }; 1181 1182 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd) 1183 { 1184 __u16 *data = (__u16 *) &rq->ifr_ifru; 1185 pegasus_t *pegasus = netdev_priv(net); 1186 int res; 1187 1188 switch (cmd) { 1189 case SIOCDEVPRIVATE: 1190 data[0] = pegasus->phy; 1191 case SIOCDEVPRIVATE + 1: 1192 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]); 1193 res = 0; 1194 break; 1195 case SIOCDEVPRIVATE + 2: 1196 if (!capable(CAP_NET_ADMIN)) 1197 return -EPERM; 1198 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]); 1199 res = 0; 1200 break; 1201 default: 1202 res = -EOPNOTSUPP; 1203 } 1204 return res; 1205 } 1206 1207 static void pegasus_set_multicast(struct net_device *net) 1208 { 1209 pegasus_t *pegasus = netdev_priv(net); 1210 1211 if (net->flags & IFF_PROMISC) { 1212 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; 1213 netif_info(pegasus, link, net, "Promiscuous mode enabled\n"); 1214 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) { 1215 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; 1216 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1217 netif_dbg(pegasus, link, net, "set allmulti\n"); 1218 } else { 1219 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; 1220 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1221 } 1222 1223 pegasus->ctrl_urb->status = 0; 1224 1225 pegasus->flags |= ETH_REGS_CHANGE; 1226 ctrl_callback(pegasus->ctrl_urb); 1227 } 1228 1229 static __u8 mii_phy_probe(pegasus_t *pegasus) 1230 { 1231 int i; 1232 __u16 tmp; 1233 1234 for (i = 0; i < 32; i++) { 1235 read_mii_word(pegasus, i, MII_BMSR, &tmp); 1236 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) 1237 continue; 1238 else 1239 return i; 1240 } 1241 1242 return 0xff; 1243 } 1244 1245 static inline void setup_pegasus_II(pegasus_t *pegasus) 1246 { 1247 __u8 data = 0xa5; 1248 1249 set_register(pegasus, Reg1d, 0); 1250 set_register(pegasus, Reg7b, 1); 1251 mdelay(100); 1252 if ((pegasus->features & HAS_HOME_PNA) && mii_mode) 1253 set_register(pegasus, Reg7b, 0); 1254 else 1255 set_register(pegasus, Reg7b, 2); 1256 1257 set_register(pegasus, 0x83, data); 1258 get_registers(pegasus, 0x83, 1, &data); 1259 1260 if (data == 0xa5) 1261 pegasus->chip = 0x8513; 1262 else 1263 pegasus->chip = 0; 1264 1265 set_register(pegasus, 0x80, 0xc0); 1266 set_register(pegasus, 0x83, 0xff); 1267 set_register(pegasus, 0x84, 0x01); 1268 1269 if (pegasus->features & HAS_HOME_PNA && mii_mode) 1270 set_register(pegasus, Reg81, 6); 1271 else 1272 set_register(pegasus, Reg81, 2); 1273 } 1274 1275 1276 static int pegasus_count; 1277 static struct workqueue_struct *pegasus_workqueue; 1278 #define CARRIER_CHECK_DELAY (2 * HZ) 1279 1280 static void check_carrier(struct work_struct *work) 1281 { 1282 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work); 1283 set_carrier(pegasus->net); 1284 if (!(pegasus->flags & PEGASUS_UNPLUG)) { 1285 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1286 CARRIER_CHECK_DELAY); 1287 } 1288 } 1289 1290 static int pegasus_blacklisted(struct usb_device *udev) 1291 { 1292 struct usb_device_descriptor *udd = &udev->descriptor; 1293 1294 /* Special quirk to keep the driver from handling the Belkin Bluetooth 1295 * dongle which happens to have the same ID. 1296 */ 1297 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) && 1298 (udd->idProduct == cpu_to_le16(0x0121)) && 1299 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) && 1300 (udd->bDeviceProtocol == 1)) 1301 return 1; 1302 1303 return 0; 1304 } 1305 1306 /* we rely on probe() and remove() being serialized so we 1307 * don't need extra locking on pegasus_count. 1308 */ 1309 static void pegasus_dec_workqueue(void) 1310 { 1311 pegasus_count--; 1312 if (pegasus_count == 0) { 1313 destroy_workqueue(pegasus_workqueue); 1314 pegasus_workqueue = NULL; 1315 } 1316 } 1317 1318 static int pegasus_probe(struct usb_interface *intf, 1319 const struct usb_device_id *id) 1320 { 1321 struct usb_device *dev = interface_to_usbdev(intf); 1322 struct net_device *net; 1323 pegasus_t *pegasus; 1324 int dev_index = id - pegasus_ids; 1325 int res = -ENOMEM; 1326 1327 if (pegasus_blacklisted(dev)) 1328 return -ENODEV; 1329 1330 if (pegasus_count == 0) { 1331 pegasus_workqueue = create_singlethread_workqueue("pegasus"); 1332 if (!pegasus_workqueue) 1333 return -ENOMEM; 1334 } 1335 pegasus_count++; 1336 1337 net = alloc_etherdev(sizeof(struct pegasus)); 1338 if (!net) 1339 goto out; 1340 1341 pegasus = netdev_priv(net); 1342 pegasus->dev_index = dev_index; 1343 init_waitqueue_head(&pegasus->ctrl_wait); 1344 1345 if (!alloc_urbs(pegasus)) { 1346 dev_err(&intf->dev, "can't allocate %s\n", "urbs"); 1347 goto out1; 1348 } 1349 1350 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus); 1351 1352 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier); 1353 1354 pegasus->intf = intf; 1355 pegasus->usb = dev; 1356 pegasus->net = net; 1357 1358 1359 net->watchdog_timeo = PEGASUS_TX_TIMEOUT; 1360 net->netdev_ops = &pegasus_netdev_ops; 1361 SET_ETHTOOL_OPS(net, &ops); 1362 pegasus->mii.dev = net; 1363 pegasus->mii.mdio_read = mdio_read; 1364 pegasus->mii.mdio_write = mdio_write; 1365 pegasus->mii.phy_id_mask = 0x1f; 1366 pegasus->mii.reg_num_mask = 0x1f; 1367 spin_lock_init(&pegasus->rx_pool_lock); 1368 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV 1369 | NETIF_MSG_PROBE | NETIF_MSG_LINK); 1370 1371 pegasus->features = usb_dev_id[dev_index].private; 1372 get_interrupt_interval(pegasus); 1373 if (reset_mac(pegasus)) { 1374 dev_err(&intf->dev, "can't reset MAC\n"); 1375 res = -EIO; 1376 goto out2; 1377 } 1378 set_ethernet_addr(pegasus); 1379 fill_skb_pool(pegasus); 1380 if (pegasus->features & PEGASUS_II) { 1381 dev_info(&intf->dev, "setup Pegasus II specific registers\n"); 1382 setup_pegasus_II(pegasus); 1383 } 1384 pegasus->phy = mii_phy_probe(pegasus); 1385 if (pegasus->phy == 0xff) { 1386 dev_warn(&intf->dev, "can't locate MII phy, using default\n"); 1387 pegasus->phy = 1; 1388 } 1389 pegasus->mii.phy_id = pegasus->phy; 1390 usb_set_intfdata(intf, pegasus); 1391 SET_NETDEV_DEV(net, &intf->dev); 1392 pegasus_reset_wol(net); 1393 res = register_netdev(net); 1394 if (res) 1395 goto out3; 1396 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1397 CARRIER_CHECK_DELAY); 1398 1399 dev_info(&intf->dev, "%s, %s, %pM\n", 1400 net->name, 1401 usb_dev_id[dev_index].name, 1402 net->dev_addr); 1403 return 0; 1404 1405 out3: 1406 usb_set_intfdata(intf, NULL); 1407 free_skb_pool(pegasus); 1408 out2: 1409 free_all_urbs(pegasus); 1410 out1: 1411 free_netdev(net); 1412 out: 1413 pegasus_dec_workqueue(); 1414 return res; 1415 } 1416 1417 static void pegasus_disconnect(struct usb_interface *intf) 1418 { 1419 struct pegasus *pegasus = usb_get_intfdata(intf); 1420 1421 usb_set_intfdata(intf, NULL); 1422 if (!pegasus) { 1423 dev_dbg(&intf->dev, "unregistering non-bound device?\n"); 1424 return; 1425 } 1426 1427 pegasus->flags |= PEGASUS_UNPLUG; 1428 cancel_delayed_work(&pegasus->carrier_check); 1429 unregister_netdev(pegasus->net); 1430 unlink_all_urbs(pegasus); 1431 free_all_urbs(pegasus); 1432 free_skb_pool(pegasus); 1433 if (pegasus->rx_skb != NULL) { 1434 dev_kfree_skb(pegasus->rx_skb); 1435 pegasus->rx_skb = NULL; 1436 } 1437 free_netdev(pegasus->net); 1438 pegasus_dec_workqueue(); 1439 } 1440 1441 static int pegasus_suspend(struct usb_interface *intf, pm_message_t message) 1442 { 1443 struct pegasus *pegasus = usb_get_intfdata(intf); 1444 1445 netif_device_detach(pegasus->net); 1446 cancel_delayed_work(&pegasus->carrier_check); 1447 if (netif_running(pegasus->net)) { 1448 usb_kill_urb(pegasus->rx_urb); 1449 usb_kill_urb(pegasus->intr_urb); 1450 } 1451 return 0; 1452 } 1453 1454 static int pegasus_resume(struct usb_interface *intf) 1455 { 1456 struct pegasus *pegasus = usb_get_intfdata(intf); 1457 1458 netif_device_attach(pegasus->net); 1459 if (netif_running(pegasus->net)) { 1460 pegasus->rx_urb->status = 0; 1461 pegasus->rx_urb->actual_length = 0; 1462 read_bulk_callback(pegasus->rx_urb); 1463 1464 pegasus->intr_urb->status = 0; 1465 pegasus->intr_urb->actual_length = 0; 1466 intr_callback(pegasus->intr_urb); 1467 } 1468 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1469 CARRIER_CHECK_DELAY); 1470 return 0; 1471 } 1472 1473 static const struct net_device_ops pegasus_netdev_ops = { 1474 .ndo_open = pegasus_open, 1475 .ndo_stop = pegasus_close, 1476 .ndo_do_ioctl = pegasus_ioctl, 1477 .ndo_start_xmit = pegasus_start_xmit, 1478 .ndo_set_rx_mode = pegasus_set_multicast, 1479 .ndo_get_stats = pegasus_netdev_stats, 1480 .ndo_tx_timeout = pegasus_tx_timeout, 1481 .ndo_change_mtu = eth_change_mtu, 1482 .ndo_set_mac_address = eth_mac_addr, 1483 .ndo_validate_addr = eth_validate_addr, 1484 }; 1485 1486 static struct usb_driver pegasus_driver = { 1487 .name = driver_name, 1488 .probe = pegasus_probe, 1489 .disconnect = pegasus_disconnect, 1490 .id_table = pegasus_ids, 1491 .suspend = pegasus_suspend, 1492 .resume = pegasus_resume, 1493 .disable_hub_initiated_lpm = 1, 1494 }; 1495 1496 static void __init parse_id(char *id) 1497 { 1498 unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0; 1499 char *token, *name = NULL; 1500 1501 if ((token = strsep(&id, ":")) != NULL) 1502 name = token; 1503 /* name now points to a null terminated string*/ 1504 if ((token = strsep(&id, ":")) != NULL) 1505 vendor_id = simple_strtoul(token, NULL, 16); 1506 if ((token = strsep(&id, ":")) != NULL) 1507 device_id = simple_strtoul(token, NULL, 16); 1508 flags = simple_strtoul(id, NULL, 16); 1509 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n", 1510 driver_name, name, vendor_id, device_id, flags); 1511 1512 if (vendor_id > 0x10000 || vendor_id == 0) 1513 return; 1514 if (device_id > 0x10000 || device_id == 0) 1515 return; 1516 1517 for (i = 0; usb_dev_id[i].name; i++); 1518 usb_dev_id[i].name = name; 1519 usb_dev_id[i].vendor = vendor_id; 1520 usb_dev_id[i].device = device_id; 1521 usb_dev_id[i].private = flags; 1522 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; 1523 pegasus_ids[i].idVendor = vendor_id; 1524 pegasus_ids[i].idProduct = device_id; 1525 } 1526 1527 static int __init pegasus_init(void) 1528 { 1529 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION); 1530 if (devid) 1531 parse_id(devid); 1532 return usb_register(&pegasus_driver); 1533 } 1534 1535 static void __exit pegasus_exit(void) 1536 { 1537 usb_deregister(&pegasus_driver); 1538 } 1539 1540 module_init(pegasus_init); 1541 module_exit(pegasus_exit); 1542