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 = 0; 59 static int mii_mode = 0; 60 static char *devid=NULL; 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 = (pegasus_t *) 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 = (pegasus_t *) 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 } 754 if (pegasus->rx_skb == NULL) { 755 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n"); 756 tasklet_schedule(&pegasus->rx_tl); 757 goto done; 758 } 759 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 760 usb_rcvbulkpipe(pegasus->usb, 1), 761 pegasus->rx_skb->data, PEGASUS_MTU + 8, 762 read_bulk_callback, pegasus); 763 try_again: 764 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 765 if (status == -ENODEV) 766 netif_device_detach(pegasus->net); 767 else if (status) { 768 pegasus->flags |= PEGASUS_RX_URB_FAIL; 769 tasklet_schedule(&pegasus->rx_tl); 770 } else { 771 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 772 } 773 done: 774 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags); 775 } 776 777 static void write_bulk_callback(struct urb *urb) 778 { 779 pegasus_t *pegasus = urb->context; 780 struct net_device *net; 781 int status = urb->status; 782 783 if (!pegasus) 784 return; 785 786 net = pegasus->net; 787 788 if (!netif_device_present(net) || !netif_running(net)) 789 return; 790 791 switch (status) { 792 case -EPIPE: 793 /* FIXME schedule_work() to clear the tx halt */ 794 netif_stop_queue(net); 795 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n"); 796 return; 797 case -ENOENT: 798 case -ECONNRESET: 799 case -ESHUTDOWN: 800 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status); 801 return; 802 default: 803 netif_info(pegasus, tx_err, net, "TX status %d\n", status); 804 /* FALL THROUGH */ 805 case 0: 806 break; 807 } 808 809 net->trans_start = jiffies; /* prevent tx timeout */ 810 netif_wake_queue(net); 811 } 812 813 static void intr_callback(struct urb *urb) 814 { 815 pegasus_t *pegasus = urb->context; 816 struct net_device *net; 817 int res, status = urb->status; 818 819 if (!pegasus) 820 return; 821 net = pegasus->net; 822 823 switch (status) { 824 case 0: 825 break; 826 case -ECONNRESET: /* unlink */ 827 case -ENOENT: 828 case -ESHUTDOWN: 829 return; 830 default: 831 /* some Pegasus-I products report LOTS of data 832 * toggle errors... avoid log spamming 833 */ 834 netif_dbg(pegasus, timer, net, "intr status %d\n", status); 835 } 836 837 if (urb->actual_length >= 6) { 838 u8 * d = urb->transfer_buffer; 839 840 /* byte 0 == tx_status1, reg 2B */ 841 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL 842 |LATE_COL|JABBER_TIMEOUT)) { 843 pegasus->stats.tx_errors++; 844 if (d[0] & TX_UNDERRUN) 845 pegasus->stats.tx_fifo_errors++; 846 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT)) 847 pegasus->stats.tx_aborted_errors++; 848 if (d[0] & LATE_COL) 849 pegasus->stats.tx_window_errors++; 850 } 851 852 /* d[5].LINK_STATUS lies on some adapters. 853 * d[0].NO_CARRIER kicks in only with failed TX. 854 * ... so monitoring with MII may be safest. 855 */ 856 857 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */ 858 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4]; 859 } 860 861 res = usb_submit_urb(urb, GFP_ATOMIC); 862 if (res == -ENODEV) 863 netif_device_detach(pegasus->net); 864 if (res) 865 netif_err(pegasus, timer, net, 866 "can't resubmit interrupt urb, %d\n", res); 867 } 868 869 static void pegasus_tx_timeout(struct net_device *net) 870 { 871 pegasus_t *pegasus = netdev_priv(net); 872 netif_warn(pegasus, timer, net, "tx timeout\n"); 873 usb_unlink_urb(pegasus->tx_urb); 874 pegasus->stats.tx_errors++; 875 } 876 877 static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb, 878 struct net_device *net) 879 { 880 pegasus_t *pegasus = netdev_priv(net); 881 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3; 882 int res; 883 __u16 l16 = skb->len; 884 885 netif_stop_queue(net); 886 887 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16); 888 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len); 889 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb, 890 usb_sndbulkpipe(pegasus->usb, 2), 891 pegasus->tx_buff, count, 892 write_bulk_callback, pegasus); 893 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) { 894 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res); 895 switch (res) { 896 case -EPIPE: /* stall, or disconnect from TT */ 897 /* cleanup should already have been scheduled */ 898 break; 899 case -ENODEV: /* disconnect() upcoming */ 900 case -EPERM: 901 netif_device_detach(pegasus->net); 902 break; 903 default: 904 pegasus->stats.tx_errors++; 905 netif_start_queue(net); 906 } 907 } else { 908 pegasus->stats.tx_packets++; 909 pegasus->stats.tx_bytes += skb->len; 910 } 911 dev_kfree_skb(skb); 912 913 return NETDEV_TX_OK; 914 } 915 916 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev) 917 { 918 return &((pegasus_t *) netdev_priv(dev))->stats; 919 } 920 921 static inline void disable_net_traffic(pegasus_t * pegasus) 922 { 923 __le16 tmp = cpu_to_le16(0); 924 925 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp); 926 } 927 928 static inline void get_interrupt_interval(pegasus_t * pegasus) 929 { 930 u16 data; 931 u8 interval; 932 933 read_eprom_word(pegasus, 4, &data); 934 interval = data >> 8; 935 if (pegasus->usb->speed != USB_SPEED_HIGH) { 936 if (interval < 0x80) { 937 netif_info(pegasus, timer, pegasus->net, 938 "intr interval changed from %ums to %ums\n", 939 interval, 0x80); 940 interval = 0x80; 941 data = (data & 0x00FF) | ((u16)interval << 8); 942 #ifdef PEGASUS_WRITE_EEPROM 943 write_eprom_word(pegasus, 4, data); 944 #endif 945 } 946 } 947 pegasus->intr_interval = interval; 948 } 949 950 static void set_carrier(struct net_device *net) 951 { 952 pegasus_t *pegasus = netdev_priv(net); 953 u16 tmp; 954 955 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp)) 956 return; 957 958 if (tmp & BMSR_LSTATUS) 959 netif_carrier_on(net); 960 else 961 netif_carrier_off(net); 962 } 963 964 static void free_all_urbs(pegasus_t * pegasus) 965 { 966 usb_free_urb(pegasus->intr_urb); 967 usb_free_urb(pegasus->tx_urb); 968 usb_free_urb(pegasus->rx_urb); 969 usb_free_urb(pegasus->ctrl_urb); 970 } 971 972 static void unlink_all_urbs(pegasus_t * pegasus) 973 { 974 usb_kill_urb(pegasus->intr_urb); 975 usb_kill_urb(pegasus->tx_urb); 976 usb_kill_urb(pegasus->rx_urb); 977 usb_kill_urb(pegasus->ctrl_urb); 978 } 979 980 static int alloc_urbs(pegasus_t * pegasus) 981 { 982 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 983 if (!pegasus->ctrl_urb) { 984 return 0; 985 } 986 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 987 if (!pegasus->rx_urb) { 988 usb_free_urb(pegasus->ctrl_urb); 989 return 0; 990 } 991 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 992 if (!pegasus->tx_urb) { 993 usb_free_urb(pegasus->rx_urb); 994 usb_free_urb(pegasus->ctrl_urb); 995 return 0; 996 } 997 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 998 if (!pegasus->intr_urb) { 999 usb_free_urb(pegasus->tx_urb); 1000 usb_free_urb(pegasus->rx_urb); 1001 usb_free_urb(pegasus->ctrl_urb); 1002 return 0; 1003 } 1004 1005 return 1; 1006 } 1007 1008 static int pegasus_open(struct net_device *net) 1009 { 1010 pegasus_t *pegasus = netdev_priv(net); 1011 int res; 1012 1013 if (pegasus->rx_skb == NULL) 1014 pegasus->rx_skb = pull_skb(pegasus); 1015 /* 1016 ** Note: no point to free the pool. it is empty :-) 1017 */ 1018 if (!pegasus->rx_skb) 1019 return -ENOMEM; 1020 1021 res = set_registers(pegasus, EthID, 6, net->dev_addr); 1022 1023 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 1024 usb_rcvbulkpipe(pegasus->usb, 1), 1025 pegasus->rx_skb->data, PEGASUS_MTU + 8, 1026 read_bulk_callback, pegasus); 1027 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) { 1028 if (res == -ENODEV) 1029 netif_device_detach(pegasus->net); 1030 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res); 1031 goto exit; 1032 } 1033 1034 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb, 1035 usb_rcvintpipe(pegasus->usb, 3), 1036 pegasus->intr_buff, sizeof (pegasus->intr_buff), 1037 intr_callback, pegasus, pegasus->intr_interval); 1038 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) { 1039 if (res == -ENODEV) 1040 netif_device_detach(pegasus->net); 1041 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res); 1042 usb_kill_urb(pegasus->rx_urb); 1043 goto exit; 1044 } 1045 if ((res = enable_net_traffic(net, pegasus->usb))) { 1046 netif_dbg(pegasus, ifup, net, 1047 "can't enable_net_traffic() - %d\n", res); 1048 res = -EIO; 1049 usb_kill_urb(pegasus->rx_urb); 1050 usb_kill_urb(pegasus->intr_urb); 1051 free_skb_pool(pegasus); 1052 goto exit; 1053 } 1054 set_carrier(net); 1055 netif_start_queue(net); 1056 netif_dbg(pegasus, ifup, net, "open\n"); 1057 res = 0; 1058 exit: 1059 return res; 1060 } 1061 1062 static int pegasus_close(struct net_device *net) 1063 { 1064 pegasus_t *pegasus = netdev_priv(net); 1065 1066 netif_stop_queue(net); 1067 if (!(pegasus->flags & PEGASUS_UNPLUG)) 1068 disable_net_traffic(pegasus); 1069 tasklet_kill(&pegasus->rx_tl); 1070 unlink_all_urbs(pegasus); 1071 1072 return 0; 1073 } 1074 1075 static void pegasus_get_drvinfo(struct net_device *dev, 1076 struct ethtool_drvinfo *info) 1077 { 1078 pegasus_t *pegasus = netdev_priv(dev); 1079 strncpy(info->driver, driver_name, sizeof (info->driver) - 1); 1080 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1); 1081 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info)); 1082 } 1083 1084 /* also handles three patterns of some kind in hardware */ 1085 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) 1086 1087 static void 1088 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1089 { 1090 pegasus_t *pegasus = netdev_priv(dev); 1091 1092 wol->supported = WAKE_MAGIC | WAKE_PHY; 1093 wol->wolopts = pegasus->wolopts; 1094 } 1095 1096 static int 1097 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1098 { 1099 pegasus_t *pegasus = netdev_priv(dev); 1100 u8 reg78 = 0x04; 1101 1102 if (wol->wolopts & ~WOL_SUPPORTED) 1103 return -EINVAL; 1104 1105 if (wol->wolopts & WAKE_MAGIC) 1106 reg78 |= 0x80; 1107 if (wol->wolopts & WAKE_PHY) 1108 reg78 |= 0x40; 1109 /* FIXME this 0x10 bit still needs to get set in the chip... */ 1110 if (wol->wolopts) 1111 pegasus->eth_regs[0] |= 0x10; 1112 else 1113 pegasus->eth_regs[0] &= ~0x10; 1114 pegasus->wolopts = wol->wolopts; 1115 return set_register(pegasus, WakeupControl, reg78); 1116 } 1117 1118 static inline void pegasus_reset_wol(struct net_device *dev) 1119 { 1120 struct ethtool_wolinfo wol; 1121 1122 memset(&wol, 0, sizeof wol); 1123 (void) pegasus_set_wol(dev, &wol); 1124 } 1125 1126 static int 1127 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1128 { 1129 pegasus_t *pegasus; 1130 1131 pegasus = netdev_priv(dev); 1132 mii_ethtool_gset(&pegasus->mii, ecmd); 1133 return 0; 1134 } 1135 1136 static int 1137 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1138 { 1139 pegasus_t *pegasus = netdev_priv(dev); 1140 return mii_ethtool_sset(&pegasus->mii, ecmd); 1141 } 1142 1143 static int pegasus_nway_reset(struct net_device *dev) 1144 { 1145 pegasus_t *pegasus = netdev_priv(dev); 1146 return mii_nway_restart(&pegasus->mii); 1147 } 1148 1149 static u32 pegasus_get_link(struct net_device *dev) 1150 { 1151 pegasus_t *pegasus = netdev_priv(dev); 1152 return mii_link_ok(&pegasus->mii); 1153 } 1154 1155 static u32 pegasus_get_msglevel(struct net_device *dev) 1156 { 1157 pegasus_t *pegasus = netdev_priv(dev); 1158 return pegasus->msg_enable; 1159 } 1160 1161 static void pegasus_set_msglevel(struct net_device *dev, u32 v) 1162 { 1163 pegasus_t *pegasus = netdev_priv(dev); 1164 pegasus->msg_enable = v; 1165 } 1166 1167 static const struct ethtool_ops ops = { 1168 .get_drvinfo = pegasus_get_drvinfo, 1169 .get_settings = pegasus_get_settings, 1170 .set_settings = pegasus_set_settings, 1171 .nway_reset = pegasus_nway_reset, 1172 .get_link = pegasus_get_link, 1173 .get_msglevel = pegasus_get_msglevel, 1174 .set_msglevel = pegasus_set_msglevel, 1175 .get_wol = pegasus_get_wol, 1176 .set_wol = pegasus_set_wol, 1177 }; 1178 1179 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd) 1180 { 1181 __u16 *data = (__u16 *) & rq->ifr_ifru; 1182 pegasus_t *pegasus = netdev_priv(net); 1183 int res; 1184 1185 switch (cmd) { 1186 case SIOCDEVPRIVATE: 1187 data[0] = pegasus->phy; 1188 case SIOCDEVPRIVATE + 1: 1189 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]); 1190 res = 0; 1191 break; 1192 case SIOCDEVPRIVATE + 2: 1193 if (!capable(CAP_NET_ADMIN)) 1194 return -EPERM; 1195 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]); 1196 res = 0; 1197 break; 1198 default: 1199 res = -EOPNOTSUPP; 1200 } 1201 return res; 1202 } 1203 1204 static void pegasus_set_multicast(struct net_device *net) 1205 { 1206 pegasus_t *pegasus = netdev_priv(net); 1207 1208 if (net->flags & IFF_PROMISC) { 1209 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; 1210 netif_info(pegasus, link, net, "Promiscuous mode enabled\n"); 1211 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) { 1212 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; 1213 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1214 netif_dbg(pegasus, link, net, "set allmulti\n"); 1215 } else { 1216 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; 1217 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1218 } 1219 1220 pegasus->ctrl_urb->status = 0; 1221 1222 pegasus->flags |= ETH_REGS_CHANGE; 1223 ctrl_callback(pegasus->ctrl_urb); 1224 } 1225 1226 static __u8 mii_phy_probe(pegasus_t * pegasus) 1227 { 1228 int i; 1229 __u16 tmp; 1230 1231 for (i = 0; i < 32; i++) { 1232 read_mii_word(pegasus, i, MII_BMSR, &tmp); 1233 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) 1234 continue; 1235 else 1236 return i; 1237 } 1238 1239 return 0xff; 1240 } 1241 1242 static inline void setup_pegasus_II(pegasus_t * pegasus) 1243 { 1244 __u8 data = 0xa5; 1245 1246 set_register(pegasus, Reg1d, 0); 1247 set_register(pegasus, Reg7b, 1); 1248 mdelay(100); 1249 if ((pegasus->features & HAS_HOME_PNA) && mii_mode) 1250 set_register(pegasus, Reg7b, 0); 1251 else 1252 set_register(pegasus, Reg7b, 2); 1253 1254 set_register(pegasus, 0x83, data); 1255 get_registers(pegasus, 0x83, 1, &data); 1256 1257 if (data == 0xa5) { 1258 pegasus->chip = 0x8513; 1259 } else { 1260 pegasus->chip = 0; 1261 } 1262 1263 set_register(pegasus, 0x80, 0xc0); 1264 set_register(pegasus, 0x83, 0xff); 1265 set_register(pegasus, 0x84, 0x01); 1266 1267 if (pegasus->features & HAS_HOME_PNA && mii_mode) 1268 set_register(pegasus, Reg81, 6); 1269 else 1270 set_register(pegasus, Reg81, 2); 1271 } 1272 1273 1274 static int pegasus_count; 1275 static struct workqueue_struct *pegasus_workqueue = NULL; 1276 #define CARRIER_CHECK_DELAY (2 * HZ) 1277 1278 static void check_carrier(struct work_struct *work) 1279 { 1280 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work); 1281 set_carrier(pegasus->net); 1282 if (!(pegasus->flags & PEGASUS_UNPLUG)) { 1283 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1284 CARRIER_CHECK_DELAY); 1285 } 1286 } 1287 1288 static int pegasus_blacklisted(struct usb_device *udev) 1289 { 1290 struct usb_device_descriptor *udd = &udev->descriptor; 1291 1292 /* Special quirk to keep the driver from handling the Belkin Bluetooth 1293 * dongle which happens to have the same ID. 1294 */ 1295 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) && 1296 (udd->idProduct == cpu_to_le16(0x0121)) && 1297 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) && 1298 (udd->bDeviceProtocol == 1)) 1299 return 1; 1300 1301 return 0; 1302 } 1303 1304 /* we rely on probe() and remove() being serialized so we 1305 * don't need extra locking on pegasus_count. 1306 */ 1307 static void pegasus_dec_workqueue(void) 1308 { 1309 pegasus_count--; 1310 if (pegasus_count == 0) { 1311 destroy_workqueue(pegasus_workqueue); 1312 pegasus_workqueue = NULL; 1313 } 1314 } 1315 1316 static int pegasus_probe(struct usb_interface *intf, 1317 const struct usb_device_id *id) 1318 { 1319 struct usb_device *dev = interface_to_usbdev(intf); 1320 struct net_device *net; 1321 pegasus_t *pegasus; 1322 int dev_index = id - pegasus_ids; 1323 int res = -ENOMEM; 1324 1325 if (pegasus_blacklisted(dev)) 1326 return -ENODEV; 1327 1328 if (pegasus_count == 0) { 1329 pegasus_workqueue = create_singlethread_workqueue("pegasus"); 1330 if (!pegasus_workqueue) 1331 return -ENOMEM; 1332 } 1333 pegasus_count++; 1334 1335 usb_get_dev(dev); 1336 1337 net = alloc_etherdev(sizeof(struct pegasus)); 1338 if (!net) { 1339 dev_err(&intf->dev, "can't allocate %s\n", "device"); 1340 goto out; 1341 } 1342 1343 pegasus = netdev_priv(net); 1344 pegasus->dev_index = dev_index; 1345 init_waitqueue_head(&pegasus->ctrl_wait); 1346 1347 if (!alloc_urbs(pegasus)) { 1348 dev_err(&intf->dev, "can't allocate %s\n", "urbs"); 1349 goto out1; 1350 } 1351 1352 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus); 1353 1354 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier); 1355 1356 pegasus->intf = intf; 1357 pegasus->usb = dev; 1358 pegasus->net = net; 1359 1360 1361 net->watchdog_timeo = PEGASUS_TX_TIMEOUT; 1362 net->netdev_ops = &pegasus_netdev_ops; 1363 SET_ETHTOOL_OPS(net, &ops); 1364 pegasus->mii.dev = net; 1365 pegasus->mii.mdio_read = mdio_read; 1366 pegasus->mii.mdio_write = mdio_write; 1367 pegasus->mii.phy_id_mask = 0x1f; 1368 pegasus->mii.reg_num_mask = 0x1f; 1369 spin_lock_init(&pegasus->rx_pool_lock); 1370 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV 1371 | NETIF_MSG_PROBE | NETIF_MSG_LINK); 1372 1373 pegasus->features = usb_dev_id[dev_index].private; 1374 get_interrupt_interval(pegasus); 1375 if (reset_mac(pegasus)) { 1376 dev_err(&intf->dev, "can't reset MAC\n"); 1377 res = -EIO; 1378 goto out2; 1379 } 1380 set_ethernet_addr(pegasus); 1381 fill_skb_pool(pegasus); 1382 if (pegasus->features & PEGASUS_II) { 1383 dev_info(&intf->dev, "setup Pegasus II specific registers\n"); 1384 setup_pegasus_II(pegasus); 1385 } 1386 pegasus->phy = mii_phy_probe(pegasus); 1387 if (pegasus->phy == 0xff) { 1388 dev_warn(&intf->dev, "can't locate MII phy, using default\n"); 1389 pegasus->phy = 1; 1390 } 1391 pegasus->mii.phy_id = pegasus->phy; 1392 usb_set_intfdata(intf, pegasus); 1393 SET_NETDEV_DEV(net, &intf->dev); 1394 pegasus_reset_wol(net); 1395 res = register_netdev(net); 1396 if (res) 1397 goto out3; 1398 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1399 CARRIER_CHECK_DELAY); 1400 1401 dev_info(&intf->dev, "%s, %s, %pM\n", 1402 net->name, 1403 usb_dev_id[dev_index].name, 1404 net->dev_addr); 1405 return 0; 1406 1407 out3: 1408 usb_set_intfdata(intf, NULL); 1409 free_skb_pool(pegasus); 1410 out2: 1411 free_all_urbs(pegasus); 1412 out1: 1413 free_netdev(net); 1414 out: 1415 usb_put_dev(dev); 1416 pegasus_dec_workqueue(); 1417 return res; 1418 } 1419 1420 static void pegasus_disconnect(struct usb_interface *intf) 1421 { 1422 struct pegasus *pegasus = usb_get_intfdata(intf); 1423 1424 usb_set_intfdata(intf, NULL); 1425 if (!pegasus) { 1426 dev_dbg(&intf->dev, "unregistering non-bound device?\n"); 1427 return; 1428 } 1429 1430 pegasus->flags |= PEGASUS_UNPLUG; 1431 cancel_delayed_work(&pegasus->carrier_check); 1432 unregister_netdev(pegasus->net); 1433 usb_put_dev(interface_to_usbdev(intf)); 1434 unlink_all_urbs(pegasus); 1435 free_all_urbs(pegasus); 1436 free_skb_pool(pegasus); 1437 if (pegasus->rx_skb != NULL) { 1438 dev_kfree_skb(pegasus->rx_skb); 1439 pegasus->rx_skb = NULL; 1440 } 1441 free_netdev(pegasus->net); 1442 pegasus_dec_workqueue(); 1443 } 1444 1445 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message) 1446 { 1447 struct pegasus *pegasus = usb_get_intfdata(intf); 1448 1449 netif_device_detach (pegasus->net); 1450 cancel_delayed_work(&pegasus->carrier_check); 1451 if (netif_running(pegasus->net)) { 1452 usb_kill_urb(pegasus->rx_urb); 1453 usb_kill_urb(pegasus->intr_urb); 1454 } 1455 return 0; 1456 } 1457 1458 static int pegasus_resume (struct usb_interface *intf) 1459 { 1460 struct pegasus *pegasus = usb_get_intfdata(intf); 1461 1462 netif_device_attach (pegasus->net); 1463 if (netif_running(pegasus->net)) { 1464 pegasus->rx_urb->status = 0; 1465 pegasus->rx_urb->actual_length = 0; 1466 read_bulk_callback(pegasus->rx_urb); 1467 1468 pegasus->intr_urb->status = 0; 1469 pegasus->intr_urb->actual_length = 0; 1470 intr_callback(pegasus->intr_urb); 1471 } 1472 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1473 CARRIER_CHECK_DELAY); 1474 return 0; 1475 } 1476 1477 static const struct net_device_ops pegasus_netdev_ops = { 1478 .ndo_open = pegasus_open, 1479 .ndo_stop = pegasus_close, 1480 .ndo_do_ioctl = pegasus_ioctl, 1481 .ndo_start_xmit = pegasus_start_xmit, 1482 .ndo_set_multicast_list = pegasus_set_multicast, 1483 .ndo_get_stats = pegasus_netdev_stats, 1484 .ndo_tx_timeout = pegasus_tx_timeout, 1485 .ndo_change_mtu = eth_change_mtu, 1486 .ndo_set_mac_address = eth_mac_addr, 1487 .ndo_validate_addr = eth_validate_addr, 1488 }; 1489 1490 static struct usb_driver pegasus_driver = { 1491 .name = driver_name, 1492 .probe = pegasus_probe, 1493 .disconnect = pegasus_disconnect, 1494 .id_table = pegasus_ids, 1495 .suspend = pegasus_suspend, 1496 .resume = pegasus_resume, 1497 }; 1498 1499 static void __init parse_id(char *id) 1500 { 1501 unsigned int vendor_id=0, device_id=0, flags=0, i=0; 1502 char *token, *name=NULL; 1503 1504 if ((token = strsep(&id, ":")) != NULL) 1505 name = token; 1506 /* name now points to a null terminated string*/ 1507 if ((token = strsep(&id, ":")) != NULL) 1508 vendor_id = simple_strtoul(token, NULL, 16); 1509 if ((token = strsep(&id, ":")) != NULL) 1510 device_id = simple_strtoul(token, NULL, 16); 1511 flags = simple_strtoul(id, NULL, 16); 1512 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n", 1513 driver_name, name, vendor_id, device_id, flags); 1514 1515 if (vendor_id > 0x10000 || vendor_id == 0) 1516 return; 1517 if (device_id > 0x10000 || device_id == 0) 1518 return; 1519 1520 for (i=0; usb_dev_id[i].name; i++); 1521 usb_dev_id[i].name = name; 1522 usb_dev_id[i].vendor = vendor_id; 1523 usb_dev_id[i].device = device_id; 1524 usb_dev_id[i].private = flags; 1525 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; 1526 pegasus_ids[i].idVendor = vendor_id; 1527 pegasus_ids[i].idProduct = device_id; 1528 } 1529 1530 static int __init pegasus_init(void) 1531 { 1532 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION); 1533 if (devid) 1534 parse_id(devid); 1535 return usb_register(&pegasus_driver); 1536 } 1537 1538 static void __exit pegasus_exit(void) 1539 { 1540 usb_deregister(&pegasus_driver); 1541 } 1542 1543 module_init(pegasus_init); 1544 module_exit(pegasus_exit); 1545