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 int loopback; 59 static int 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 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(); 191 out: 192 remove_wait_queue(&pegasus->ctrl_wait, &wait); 193 memcpy(data, buffer, size); 194 kfree(buffer); 195 196 return ret; 197 } 198 199 static 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(); 244 out: 245 remove_wait_queue(&pegasus->ctrl_wait, &wait); 246 kfree(buffer); 247 248 return ret; 249 } 250 251 static 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(); 295 out: 296 remove_wait_queue(&pegasus->ctrl_wait, &wait); 297 kfree(tmp); 298 299 return ret; 300 } 301 302 static 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 */ 329 static 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; 353 354 fail: 355 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 356 357 return ret; 358 } 359 360 static int mdio_read(struct net_device *dev, int phy_id, int loc) 361 { 362 pegasus_t *pegasus = netdev_priv(dev); 363 u16 res; 364 365 read_mii_word(pegasus, phy_id, loc, &res); 366 return (int)res; 367 } 368 369 static 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; 392 393 fail: 394 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 395 return -ETIMEDOUT; 396 } 397 398 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val) 399 { 400 pegasus_t *pegasus = netdev_priv(dev); 401 402 write_mii_word(pegasus, phy_id, loc, val); 403 } 404 405 static 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; 429 430 fail: 431 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 432 return -ETIMEDOUT; 433 } 434 435 #ifdef PEGASUS_WRITE_EEPROM 436 static 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 } 444 445 static 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 } 454 455 static 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; 480 481 fail: 482 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__); 483 return -ETIMEDOUT; 484 } 485 #endif /* PEGASUS_WRITE_EEPROM */ 486 487 static 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 } 497 498 static 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 } 510 511 static 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 } 547 548 static 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 } 579 580 static 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 } 597 598 static 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 } 609 610 static 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 } 624 625 static 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 /* FIXME schedule work to clear the halt */ 650 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n"); 651 return; 652 case -ENOENT: 653 case -ECONNRESET: 654 case -ESHUTDOWN: 655 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status); 656 return; 657 default: 658 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status); 659 goto goon; 660 } 661 662 if (!count || count < 4) 663 goto goon; 664 665 rx_status = buf[count - 2]; 666 if (rx_status & 0x1e) { 667 netif_dbg(pegasus, rx_err, net, 668 "RX packet error %x\n", rx_status); 669 pegasus->stats.rx_errors++; 670 if (rx_status & 0x06) /* long or runt */ 671 pegasus->stats.rx_length_errors++; 672 if (rx_status & 0x08) 673 pegasus->stats.rx_crc_errors++; 674 if (rx_status & 0x10) /* extra bits */ 675 pegasus->stats.rx_frame_errors++; 676 goto goon; 677 } 678 if (pegasus->chip == 0x8513) { 679 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer); 680 pkt_len &= 0x0fff; 681 pegasus->rx_skb->data += 2; 682 } else { 683 pkt_len = buf[count - 3] << 8; 684 pkt_len += buf[count - 4]; 685 pkt_len &= 0xfff; 686 pkt_len -= 8; 687 } 688 689 /* 690 * If the packet is unreasonably long, quietly drop it rather than 691 * kernel panicing by calling skb_put. 692 */ 693 if (pkt_len > PEGASUS_MTU) 694 goto goon; 695 696 /* 697 * at this point we are sure pegasus->rx_skb != NULL 698 * so we go ahead and pass up the packet. 699 */ 700 skb_put(pegasus->rx_skb, pkt_len); 701 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net); 702 netif_rx(pegasus->rx_skb); 703 pegasus->stats.rx_packets++; 704 pegasus->stats.rx_bytes += pkt_len; 705 706 if (pegasus->flags & PEGASUS_UNPLUG) 707 return; 708 709 spin_lock(&pegasus->rx_pool_lock); 710 pegasus->rx_skb = pull_skb(pegasus); 711 spin_unlock(&pegasus->rx_pool_lock); 712 713 if (pegasus->rx_skb == NULL) 714 goto tl_sched; 715 goon: 716 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 717 usb_rcvbulkpipe(pegasus->usb, 1), 718 pegasus->rx_skb->data, PEGASUS_MTU + 8, 719 read_bulk_callback, pegasus); 720 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 721 if (rx_status == -ENODEV) 722 netif_device_detach(pegasus->net); 723 else if (rx_status) { 724 pegasus->flags |= PEGASUS_RX_URB_FAIL; 725 goto tl_sched; 726 } else { 727 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 728 } 729 730 return; 731 732 tl_sched: 733 tasklet_schedule(&pegasus->rx_tl); 734 } 735 736 static void rx_fixup(unsigned long data) 737 { 738 pegasus_t *pegasus; 739 unsigned long flags; 740 int status; 741 742 pegasus = (pegasus_t *) data; 743 if (pegasus->flags & PEGASUS_UNPLUG) 744 return; 745 746 spin_lock_irqsave(&pegasus->rx_pool_lock, flags); 747 fill_skb_pool(pegasus); 748 if (pegasus->flags & PEGASUS_RX_URB_FAIL) 749 if (pegasus->rx_skb) 750 goto try_again; 751 if (pegasus->rx_skb == NULL) 752 pegasus->rx_skb = pull_skb(pegasus); 753 if (pegasus->rx_skb == NULL) { 754 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n"); 755 tasklet_schedule(&pegasus->rx_tl); 756 goto done; 757 } 758 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 759 usb_rcvbulkpipe(pegasus->usb, 1), 760 pegasus->rx_skb->data, PEGASUS_MTU + 8, 761 read_bulk_callback, pegasus); 762 try_again: 763 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 764 if (status == -ENODEV) 765 netif_device_detach(pegasus->net); 766 else if (status) { 767 pegasus->flags |= PEGASUS_RX_URB_FAIL; 768 tasklet_schedule(&pegasus->rx_tl); 769 } else { 770 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 771 } 772 done: 773 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags); 774 } 775 776 static void write_bulk_callback(struct urb *urb) 777 { 778 pegasus_t *pegasus = urb->context; 779 struct net_device *net; 780 int status = urb->status; 781 782 if (!pegasus) 783 return; 784 785 net = pegasus->net; 786 787 if (!netif_device_present(net) || !netif_running(net)) 788 return; 789 790 switch (status) { 791 case -EPIPE: 792 /* FIXME schedule_work() to clear the tx halt */ 793 netif_stop_queue(net); 794 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n"); 795 return; 796 case -ENOENT: 797 case -ECONNRESET: 798 case -ESHUTDOWN: 799 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status); 800 return; 801 default: 802 netif_info(pegasus, tx_err, net, "TX status %d\n", status); 803 /* FALL THROUGH */ 804 case 0: 805 break; 806 } 807 808 net->trans_start = jiffies; /* prevent tx timeout */ 809 netif_wake_queue(net); 810 } 811 812 static void intr_callback(struct urb *urb) 813 { 814 pegasus_t *pegasus = urb->context; 815 struct net_device *net; 816 int res, status = urb->status; 817 818 if (!pegasus) 819 return; 820 net = pegasus->net; 821 822 switch (status) { 823 case 0: 824 break; 825 case -ECONNRESET: /* unlink */ 826 case -ENOENT: 827 case -ESHUTDOWN: 828 return; 829 default: 830 /* some Pegasus-I products report LOTS of data 831 * toggle errors... avoid log spamming 832 */ 833 netif_dbg(pegasus, timer, net, "intr status %d\n", status); 834 } 835 836 if (urb->actual_length >= 6) { 837 u8 *d = urb->transfer_buffer; 838 839 /* byte 0 == tx_status1, reg 2B */ 840 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL 841 |LATE_COL|JABBER_TIMEOUT)) { 842 pegasus->stats.tx_errors++; 843 if (d[0] & TX_UNDERRUN) 844 pegasus->stats.tx_fifo_errors++; 845 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT)) 846 pegasus->stats.tx_aborted_errors++; 847 if (d[0] & LATE_COL) 848 pegasus->stats.tx_window_errors++; 849 } 850 851 /* d[5].LINK_STATUS lies on some adapters. 852 * d[0].NO_CARRIER kicks in only with failed TX. 853 * ... so monitoring with MII may be safest. 854 */ 855 856 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */ 857 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4]; 858 } 859 860 res = usb_submit_urb(urb, GFP_ATOMIC); 861 if (res == -ENODEV) 862 netif_device_detach(pegasus->net); 863 if (res) 864 netif_err(pegasus, timer, net, 865 "can't resubmit interrupt urb, %d\n", res); 866 } 867 868 static void pegasus_tx_timeout(struct net_device *net) 869 { 870 pegasus_t *pegasus = netdev_priv(net); 871 netif_warn(pegasus, timer, net, "tx timeout\n"); 872 usb_unlink_urb(pegasus->tx_urb); 873 pegasus->stats.tx_errors++; 874 } 875 876 static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb, 877 struct net_device *net) 878 { 879 pegasus_t *pegasus = netdev_priv(net); 880 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3; 881 int res; 882 __u16 l16 = skb->len; 883 884 netif_stop_queue(net); 885 886 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16); 887 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len); 888 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb, 889 usb_sndbulkpipe(pegasus->usb, 2), 890 pegasus->tx_buff, count, 891 write_bulk_callback, pegasus); 892 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) { 893 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res); 894 switch (res) { 895 case -EPIPE: /* stall, or disconnect from TT */ 896 /* cleanup should already have been scheduled */ 897 break; 898 case -ENODEV: /* disconnect() upcoming */ 899 case -EPERM: 900 netif_device_detach(pegasus->net); 901 break; 902 default: 903 pegasus->stats.tx_errors++; 904 netif_start_queue(net); 905 } 906 } else { 907 pegasus->stats.tx_packets++; 908 pegasus->stats.tx_bytes += skb->len; 909 } 910 dev_kfree_skb(skb); 911 912 return NETDEV_TX_OK; 913 } 914 915 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev) 916 { 917 return &((pegasus_t *) netdev_priv(dev))->stats; 918 } 919 920 static inline void disable_net_traffic(pegasus_t *pegasus) 921 { 922 __le16 tmp = cpu_to_le16(0); 923 924 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp); 925 } 926 927 static inline void get_interrupt_interval(pegasus_t *pegasus) 928 { 929 u16 data; 930 u8 interval; 931 932 read_eprom_word(pegasus, 4, &data); 933 interval = data >> 8; 934 if (pegasus->usb->speed != USB_SPEED_HIGH) { 935 if (interval < 0x80) { 936 netif_info(pegasus, timer, pegasus->net, 937 "intr interval changed from %ums to %ums\n", 938 interval, 0x80); 939 interval = 0x80; 940 data = (data & 0x00FF) | ((u16)interval << 8); 941 #ifdef PEGASUS_WRITE_EEPROM 942 write_eprom_word(pegasus, 4, data); 943 #endif 944 } 945 } 946 pegasus->intr_interval = interval; 947 } 948 949 static void set_carrier(struct net_device *net) 950 { 951 pegasus_t *pegasus = netdev_priv(net); 952 u16 tmp; 953 954 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp)) 955 return; 956 957 if (tmp & BMSR_LSTATUS) 958 netif_carrier_on(net); 959 else 960 netif_carrier_off(net); 961 } 962 963 static void free_all_urbs(pegasus_t *pegasus) 964 { 965 usb_free_urb(pegasus->intr_urb); 966 usb_free_urb(pegasus->tx_urb); 967 usb_free_urb(pegasus->rx_urb); 968 usb_free_urb(pegasus->ctrl_urb); 969 } 970 971 static void unlink_all_urbs(pegasus_t *pegasus) 972 { 973 usb_kill_urb(pegasus->intr_urb); 974 usb_kill_urb(pegasus->tx_urb); 975 usb_kill_urb(pegasus->rx_urb); 976 usb_kill_urb(pegasus->ctrl_urb); 977 } 978 979 static int alloc_urbs(pegasus_t *pegasus) 980 { 981 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 982 if (!pegasus->ctrl_urb) 983 return 0; 984 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 985 if (!pegasus->rx_urb) { 986 usb_free_urb(pegasus->ctrl_urb); 987 return 0; 988 } 989 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 990 if (!pegasus->tx_urb) { 991 usb_free_urb(pegasus->rx_urb); 992 usb_free_urb(pegasus->ctrl_urb); 993 return 0; 994 } 995 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 996 if (!pegasus->intr_urb) { 997 usb_free_urb(pegasus->tx_urb); 998 usb_free_urb(pegasus->rx_urb); 999 usb_free_urb(pegasus->ctrl_urb); 1000 return 0; 1001 } 1002 1003 return 1; 1004 } 1005 1006 static int pegasus_open(struct net_device *net) 1007 { 1008 pegasus_t *pegasus = netdev_priv(net); 1009 int res; 1010 1011 if (pegasus->rx_skb == NULL) 1012 pegasus->rx_skb = pull_skb(pegasus); 1013 /* 1014 ** Note: no point to free the pool. it is empty :-) 1015 */ 1016 if (!pegasus->rx_skb) 1017 return -ENOMEM; 1018 1019 res = set_registers(pegasus, EthID, 6, net->dev_addr); 1020 1021 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 1022 usb_rcvbulkpipe(pegasus->usb, 1), 1023 pegasus->rx_skb->data, PEGASUS_MTU + 8, 1024 read_bulk_callback, pegasus); 1025 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) { 1026 if (res == -ENODEV) 1027 netif_device_detach(pegasus->net); 1028 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res); 1029 goto exit; 1030 } 1031 1032 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb, 1033 usb_rcvintpipe(pegasus->usb, 3), 1034 pegasus->intr_buff, sizeof(pegasus->intr_buff), 1035 intr_callback, pegasus, pegasus->intr_interval); 1036 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) { 1037 if (res == -ENODEV) 1038 netif_device_detach(pegasus->net); 1039 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res); 1040 usb_kill_urb(pegasus->rx_urb); 1041 goto exit; 1042 } 1043 if ((res = enable_net_traffic(net, pegasus->usb))) { 1044 netif_dbg(pegasus, ifup, net, 1045 "can't enable_net_traffic() - %d\n", res); 1046 res = -EIO; 1047 usb_kill_urb(pegasus->rx_urb); 1048 usb_kill_urb(pegasus->intr_urb); 1049 free_skb_pool(pegasus); 1050 goto exit; 1051 } 1052 set_carrier(net); 1053 netif_start_queue(net); 1054 netif_dbg(pegasus, ifup, net, "open\n"); 1055 res = 0; 1056 exit: 1057 return res; 1058 } 1059 1060 static int pegasus_close(struct net_device *net) 1061 { 1062 pegasus_t *pegasus = netdev_priv(net); 1063 1064 netif_stop_queue(net); 1065 if (!(pegasus->flags & PEGASUS_UNPLUG)) 1066 disable_net_traffic(pegasus); 1067 tasklet_kill(&pegasus->rx_tl); 1068 unlink_all_urbs(pegasus); 1069 1070 return 0; 1071 } 1072 1073 static void pegasus_get_drvinfo(struct net_device *dev, 1074 struct ethtool_drvinfo *info) 1075 { 1076 pegasus_t *pegasus = netdev_priv(dev); 1077 strncpy(info->driver, driver_name, sizeof(info->driver) - 1); 1078 strncpy(info->version, DRIVER_VERSION, sizeof(info->version) - 1); 1079 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info)); 1080 } 1081 1082 /* also handles three patterns of some kind in hardware */ 1083 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) 1084 1085 static void 1086 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1087 { 1088 pegasus_t *pegasus = netdev_priv(dev); 1089 1090 wol->supported = WAKE_MAGIC | WAKE_PHY; 1091 wol->wolopts = pegasus->wolopts; 1092 } 1093 1094 static int 1095 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1096 { 1097 pegasus_t *pegasus = netdev_priv(dev); 1098 u8 reg78 = 0x04; 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 return set_register(pegasus, WakeupControl, reg78); 1114 } 1115 1116 static inline void pegasus_reset_wol(struct net_device *dev) 1117 { 1118 struct ethtool_wolinfo wol; 1119 1120 memset(&wol, 0, sizeof wol); 1121 (void) pegasus_set_wol(dev, &wol); 1122 } 1123 1124 static int 1125 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1126 { 1127 pegasus_t *pegasus; 1128 1129 pegasus = netdev_priv(dev); 1130 mii_ethtool_gset(&pegasus->mii, ecmd); 1131 return 0; 1132 } 1133 1134 static int 1135 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1136 { 1137 pegasus_t *pegasus = netdev_priv(dev); 1138 return mii_ethtool_sset(&pegasus->mii, ecmd); 1139 } 1140 1141 static int pegasus_nway_reset(struct net_device *dev) 1142 { 1143 pegasus_t *pegasus = netdev_priv(dev); 1144 return mii_nway_restart(&pegasus->mii); 1145 } 1146 1147 static u32 pegasus_get_link(struct net_device *dev) 1148 { 1149 pegasus_t *pegasus = netdev_priv(dev); 1150 return mii_link_ok(&pegasus->mii); 1151 } 1152 1153 static u32 pegasus_get_msglevel(struct net_device *dev) 1154 { 1155 pegasus_t *pegasus = netdev_priv(dev); 1156 return pegasus->msg_enable; 1157 } 1158 1159 static void pegasus_set_msglevel(struct net_device *dev, u32 v) 1160 { 1161 pegasus_t *pegasus = netdev_priv(dev); 1162 pegasus->msg_enable = v; 1163 } 1164 1165 static const struct ethtool_ops ops = { 1166 .get_drvinfo = pegasus_get_drvinfo, 1167 .get_settings = pegasus_get_settings, 1168 .set_settings = pegasus_set_settings, 1169 .nway_reset = pegasus_nway_reset, 1170 .get_link = pegasus_get_link, 1171 .get_msglevel = pegasus_get_msglevel, 1172 .set_msglevel = pegasus_set_msglevel, 1173 .get_wol = pegasus_get_wol, 1174 .set_wol = pegasus_set_wol, 1175 }; 1176 1177 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd) 1178 { 1179 __u16 *data = (__u16 *) &rq->ifr_ifru; 1180 pegasus_t *pegasus = netdev_priv(net); 1181 int res; 1182 1183 switch (cmd) { 1184 case SIOCDEVPRIVATE: 1185 data[0] = pegasus->phy; 1186 case SIOCDEVPRIVATE + 1: 1187 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]); 1188 res = 0; 1189 break; 1190 case SIOCDEVPRIVATE + 2: 1191 if (!capable(CAP_NET_ADMIN)) 1192 return -EPERM; 1193 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]); 1194 res = 0; 1195 break; 1196 default: 1197 res = -EOPNOTSUPP; 1198 } 1199 return res; 1200 } 1201 1202 static void pegasus_set_multicast(struct net_device *net) 1203 { 1204 pegasus_t *pegasus = netdev_priv(net); 1205 1206 if (net->flags & IFF_PROMISC) { 1207 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; 1208 netif_info(pegasus, link, net, "Promiscuous mode enabled\n"); 1209 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) { 1210 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; 1211 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1212 netif_dbg(pegasus, link, net, "set allmulti\n"); 1213 } else { 1214 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; 1215 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1216 } 1217 1218 pegasus->ctrl_urb->status = 0; 1219 1220 pegasus->flags |= ETH_REGS_CHANGE; 1221 ctrl_callback(pegasus->ctrl_urb); 1222 } 1223 1224 static __u8 mii_phy_probe(pegasus_t *pegasus) 1225 { 1226 int i; 1227 __u16 tmp; 1228 1229 for (i = 0; i < 32; i++) { 1230 read_mii_word(pegasus, i, MII_BMSR, &tmp); 1231 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) 1232 continue; 1233 else 1234 return i; 1235 } 1236 1237 return 0xff; 1238 } 1239 1240 static inline void setup_pegasus_II(pegasus_t *pegasus) 1241 { 1242 __u8 data = 0xa5; 1243 1244 set_register(pegasus, Reg1d, 0); 1245 set_register(pegasus, Reg7b, 1); 1246 mdelay(100); 1247 if ((pegasus->features & HAS_HOME_PNA) && mii_mode) 1248 set_register(pegasus, Reg7b, 0); 1249 else 1250 set_register(pegasus, Reg7b, 2); 1251 1252 set_register(pegasus, 0x83, data); 1253 get_registers(pegasus, 0x83, 1, &data); 1254 1255 if (data == 0xa5) 1256 pegasus->chip = 0x8513; 1257 else 1258 pegasus->chip = 0; 1259 1260 set_register(pegasus, 0x80, 0xc0); 1261 set_register(pegasus, 0x83, 0xff); 1262 set_register(pegasus, 0x84, 0x01); 1263 1264 if (pegasus->features & HAS_HOME_PNA && mii_mode) 1265 set_register(pegasus, Reg81, 6); 1266 else 1267 set_register(pegasus, Reg81, 2); 1268 } 1269 1270 1271 static int pegasus_count; 1272 static struct workqueue_struct *pegasus_workqueue; 1273 #define CARRIER_CHECK_DELAY (2 * HZ) 1274 1275 static void check_carrier(struct work_struct *work) 1276 { 1277 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work); 1278 set_carrier(pegasus->net); 1279 if (!(pegasus->flags & PEGASUS_UNPLUG)) { 1280 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1281 CARRIER_CHECK_DELAY); 1282 } 1283 } 1284 1285 static int pegasus_blacklisted(struct usb_device *udev) 1286 { 1287 struct usb_device_descriptor *udd = &udev->descriptor; 1288 1289 /* Special quirk to keep the driver from handling the Belkin Bluetooth 1290 * dongle which happens to have the same ID. 1291 */ 1292 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) && 1293 (udd->idProduct == cpu_to_le16(0x0121)) && 1294 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) && 1295 (udd->bDeviceProtocol == 1)) 1296 return 1; 1297 1298 return 0; 1299 } 1300 1301 /* we rely on probe() and remove() being serialized so we 1302 * don't need extra locking on pegasus_count. 1303 */ 1304 static void pegasus_dec_workqueue(void) 1305 { 1306 pegasus_count--; 1307 if (pegasus_count == 0) { 1308 destroy_workqueue(pegasus_workqueue); 1309 pegasus_workqueue = NULL; 1310 } 1311 } 1312 1313 static int pegasus_probe(struct usb_interface *intf, 1314 const struct usb_device_id *id) 1315 { 1316 struct usb_device *dev = interface_to_usbdev(intf); 1317 struct net_device *net; 1318 pegasus_t *pegasus; 1319 int dev_index = id - pegasus_ids; 1320 int res = -ENOMEM; 1321 1322 if (pegasus_blacklisted(dev)) 1323 return -ENODEV; 1324 1325 if (pegasus_count == 0) { 1326 pegasus_workqueue = create_singlethread_workqueue("pegasus"); 1327 if (!pegasus_workqueue) 1328 return -ENOMEM; 1329 } 1330 pegasus_count++; 1331 1332 usb_get_dev(dev); 1333 1334 net = alloc_etherdev(sizeof(struct pegasus)); 1335 if (!net) { 1336 dev_err(&intf->dev, "can't allocate %s\n", "device"); 1337 goto out; 1338 } 1339 1340 pegasus = netdev_priv(net); 1341 pegasus->dev_index = dev_index; 1342 init_waitqueue_head(&pegasus->ctrl_wait); 1343 1344 if (!alloc_urbs(pegasus)) { 1345 dev_err(&intf->dev, "can't allocate %s\n", "urbs"); 1346 goto out1; 1347 } 1348 1349 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus); 1350 1351 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier); 1352 1353 pegasus->intf = intf; 1354 pegasus->usb = dev; 1355 pegasus->net = net; 1356 1357 1358 net->watchdog_timeo = PEGASUS_TX_TIMEOUT; 1359 net->netdev_ops = &pegasus_netdev_ops; 1360 SET_ETHTOOL_OPS(net, &ops); 1361 pegasus->mii.dev = net; 1362 pegasus->mii.mdio_read = mdio_read; 1363 pegasus->mii.mdio_write = mdio_write; 1364 pegasus->mii.phy_id_mask = 0x1f; 1365 pegasus->mii.reg_num_mask = 0x1f; 1366 spin_lock_init(&pegasus->rx_pool_lock); 1367 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV 1368 | NETIF_MSG_PROBE | NETIF_MSG_LINK); 1369 1370 pegasus->features = usb_dev_id[dev_index].private; 1371 get_interrupt_interval(pegasus); 1372 if (reset_mac(pegasus)) { 1373 dev_err(&intf->dev, "can't reset MAC\n"); 1374 res = -EIO; 1375 goto out2; 1376 } 1377 set_ethernet_addr(pegasus); 1378 fill_skb_pool(pegasus); 1379 if (pegasus->features & PEGASUS_II) { 1380 dev_info(&intf->dev, "setup Pegasus II specific registers\n"); 1381 setup_pegasus_II(pegasus); 1382 } 1383 pegasus->phy = mii_phy_probe(pegasus); 1384 if (pegasus->phy == 0xff) { 1385 dev_warn(&intf->dev, "can't locate MII phy, using default\n"); 1386 pegasus->phy = 1; 1387 } 1388 pegasus->mii.phy_id = pegasus->phy; 1389 usb_set_intfdata(intf, pegasus); 1390 SET_NETDEV_DEV(net, &intf->dev); 1391 pegasus_reset_wol(net); 1392 res = register_netdev(net); 1393 if (res) 1394 goto out3; 1395 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1396 CARRIER_CHECK_DELAY); 1397 1398 dev_info(&intf->dev, "%s, %s, %pM\n", 1399 net->name, 1400 usb_dev_id[dev_index].name, 1401 net->dev_addr); 1402 return 0; 1403 1404 out3: 1405 usb_set_intfdata(intf, NULL); 1406 free_skb_pool(pegasus); 1407 out2: 1408 free_all_urbs(pegasus); 1409 out1: 1410 free_netdev(net); 1411 out: 1412 usb_put_dev(dev); 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 usb_put_dev(interface_to_usbdev(intf)); 1431 unlink_all_urbs(pegasus); 1432 free_all_urbs(pegasus); 1433 free_skb_pool(pegasus); 1434 if (pegasus->rx_skb != NULL) { 1435 dev_kfree_skb(pegasus->rx_skb); 1436 pegasus->rx_skb = NULL; 1437 } 1438 free_netdev(pegasus->net); 1439 pegasus_dec_workqueue(); 1440 } 1441 1442 static int pegasus_suspend(struct usb_interface *intf, pm_message_t message) 1443 { 1444 struct pegasus *pegasus = usb_get_intfdata(intf); 1445 1446 netif_device_detach(pegasus->net); 1447 cancel_delayed_work(&pegasus->carrier_check); 1448 if (netif_running(pegasus->net)) { 1449 usb_kill_urb(pegasus->rx_urb); 1450 usb_kill_urb(pegasus->intr_urb); 1451 } 1452 return 0; 1453 } 1454 1455 static int pegasus_resume(struct usb_interface *intf) 1456 { 1457 struct pegasus *pegasus = usb_get_intfdata(intf); 1458 1459 netif_device_attach(pegasus->net); 1460 if (netif_running(pegasus->net)) { 1461 pegasus->rx_urb->status = 0; 1462 pegasus->rx_urb->actual_length = 0; 1463 read_bulk_callback(pegasus->rx_urb); 1464 1465 pegasus->intr_urb->status = 0; 1466 pegasus->intr_urb->actual_length = 0; 1467 intr_callback(pegasus->intr_urb); 1468 } 1469 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1470 CARRIER_CHECK_DELAY); 1471 return 0; 1472 } 1473 1474 static const struct net_device_ops pegasus_netdev_ops = { 1475 .ndo_open = pegasus_open, 1476 .ndo_stop = pegasus_close, 1477 .ndo_do_ioctl = pegasus_ioctl, 1478 .ndo_start_xmit = pegasus_start_xmit, 1479 .ndo_set_multicast_list = pegasus_set_multicast, 1480 .ndo_get_stats = pegasus_netdev_stats, 1481 .ndo_tx_timeout = pegasus_tx_timeout, 1482 .ndo_change_mtu = eth_change_mtu, 1483 .ndo_set_mac_address = eth_mac_addr, 1484 .ndo_validate_addr = eth_validate_addr, 1485 }; 1486 1487 static struct usb_driver pegasus_driver = { 1488 .name = driver_name, 1489 .probe = pegasus_probe, 1490 .disconnect = pegasus_disconnect, 1491 .id_table = pegasus_ids, 1492 .suspend = pegasus_suspend, 1493 .resume = pegasus_resume, 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