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 #include "pegasus.h" 66 #undef PEGASUS_DEV 67 {NULL, 0, 0, 0}, 68 {NULL, 0, 0, 0} 69 }; 70 71 static struct usb_device_id pegasus_ids[] = { 72 #define PEGASUS_DEV(pn, vid, pid, flags) \ 73 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid}, 74 #include "pegasus.h" 75 #undef PEGASUS_DEV 76 {}, 77 {} 78 }; 79 80 MODULE_AUTHOR(DRIVER_AUTHOR); 81 MODULE_DESCRIPTION(DRIVER_DESC); 82 MODULE_LICENSE("GPL"); 83 module_param(loopback, bool, 0); 84 module_param(mii_mode, bool, 0); 85 module_param(devid, charp, 0); 86 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)"); 87 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0"); 88 MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'"); 89 90 /* use ethtool to change the level for any given device */ 91 static int msg_level = -1; 92 module_param (msg_level, int, 0); 93 MODULE_PARM_DESC (msg_level, "Override default message level"); 94 95 MODULE_DEVICE_TABLE(usb, pegasus_ids); 96 static const struct net_device_ops pegasus_netdev_ops; 97 98 static int update_eth_regs_async(pegasus_t *); 99 /* Aargh!!! I _really_ hate such tweaks */ 100 static void ctrl_callback(struct urb *urb) 101 { 102 pegasus_t *pegasus = urb->context; 103 int status = urb->status; 104 105 if (!pegasus) 106 return; 107 108 switch (status) { 109 case 0: 110 if (pegasus->flags & ETH_REGS_CHANGE) { 111 pegasus->flags &= ~ETH_REGS_CHANGE; 112 pegasus->flags |= ETH_REGS_CHANGED; 113 update_eth_regs_async(pegasus); 114 return; 115 } 116 break; 117 case -EINPROGRESS: 118 return; 119 case -ENOENT: 120 break; 121 default: 122 if (netif_msg_drv(pegasus) && printk_ratelimit()) 123 dev_dbg(&pegasus->intf->dev, "%s, status %d\n", 124 __func__, status); 125 } 126 pegasus->flags &= ~ETH_REGS_CHANGED; 127 wake_up(&pegasus->ctrl_wait); 128 } 129 130 static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size, 131 void *data) 132 { 133 int ret; 134 char *buffer; 135 DECLARE_WAITQUEUE(wait, current); 136 137 buffer = kmalloc(size, GFP_KERNEL); 138 if (!buffer) { 139 if (netif_msg_drv(pegasus)) 140 dev_warn(&pegasus->intf->dev, "out of memory in %s\n", 141 __func__); 142 return -ENOMEM; 143 } 144 add_wait_queue(&pegasus->ctrl_wait, &wait); 145 set_current_state(TASK_UNINTERRUPTIBLE); 146 while (pegasus->flags & ETH_REGS_CHANGED) 147 schedule(); 148 remove_wait_queue(&pegasus->ctrl_wait, &wait); 149 set_current_state(TASK_RUNNING); 150 151 pegasus->dr.bRequestType = PEGASUS_REQT_READ; 152 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS; 153 pegasus->dr.wValue = cpu_to_le16(0); 154 pegasus->dr.wIndex = cpu_to_le16(indx); 155 pegasus->dr.wLength = cpu_to_le16(size); 156 pegasus->ctrl_urb->transfer_buffer_length = size; 157 158 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 159 usb_rcvctrlpipe(pegasus->usb, 0), 160 (char *) &pegasus->dr, 161 buffer, size, ctrl_callback, pegasus); 162 163 add_wait_queue(&pegasus->ctrl_wait, &wait); 164 set_current_state(TASK_UNINTERRUPTIBLE); 165 166 /* using ATOMIC, we'd never wake up if we slept */ 167 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 168 set_current_state(TASK_RUNNING); 169 if (ret == -ENODEV) 170 netif_device_detach(pegasus->net); 171 if (netif_msg_drv(pegasus) && printk_ratelimit()) 172 dev_err(&pegasus->intf->dev, "%s, status %d\n", 173 __func__, ret); 174 goto out; 175 } 176 177 schedule(); 178 out: 179 remove_wait_queue(&pegasus->ctrl_wait, &wait); 180 memcpy(data, buffer, size); 181 kfree(buffer); 182 183 return ret; 184 } 185 186 static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size, 187 void *data) 188 { 189 int ret; 190 char *buffer; 191 DECLARE_WAITQUEUE(wait, current); 192 193 buffer = kmalloc(size, GFP_KERNEL); 194 if (!buffer) { 195 if (netif_msg_drv(pegasus)) 196 dev_warn(&pegasus->intf->dev, "out of memory in %s\n", 197 __func__); 198 return -ENOMEM; 199 } 200 memcpy(buffer, data, size); 201 202 add_wait_queue(&pegasus->ctrl_wait, &wait); 203 set_current_state(TASK_UNINTERRUPTIBLE); 204 while (pegasus->flags & ETH_REGS_CHANGED) 205 schedule(); 206 remove_wait_queue(&pegasus->ctrl_wait, &wait); 207 set_current_state(TASK_RUNNING); 208 209 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 210 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; 211 pegasus->dr.wValue = cpu_to_le16(0); 212 pegasus->dr.wIndex = cpu_to_le16(indx); 213 pegasus->dr.wLength = cpu_to_le16(size); 214 pegasus->ctrl_urb->transfer_buffer_length = size; 215 216 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 217 usb_sndctrlpipe(pegasus->usb, 0), 218 (char *) &pegasus->dr, 219 buffer, size, ctrl_callback, pegasus); 220 221 add_wait_queue(&pegasus->ctrl_wait, &wait); 222 set_current_state(TASK_UNINTERRUPTIBLE); 223 224 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 225 if (ret == -ENODEV) 226 netif_device_detach(pegasus->net); 227 if (netif_msg_drv(pegasus)) 228 dev_err(&pegasus->intf->dev, "%s, status %d\n", 229 __func__, ret); 230 goto out; 231 } 232 233 schedule(); 234 out: 235 remove_wait_queue(&pegasus->ctrl_wait, &wait); 236 kfree(buffer); 237 238 return ret; 239 } 240 241 static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data) 242 { 243 int ret; 244 char *tmp; 245 DECLARE_WAITQUEUE(wait, current); 246 247 tmp = kmalloc(1, GFP_KERNEL); 248 if (!tmp) { 249 if (netif_msg_drv(pegasus)) 250 dev_warn(&pegasus->intf->dev, "out of memory in %s\n", 251 __func__); 252 return -ENOMEM; 253 } 254 memcpy(tmp, &data, 1); 255 add_wait_queue(&pegasus->ctrl_wait, &wait); 256 set_current_state(TASK_UNINTERRUPTIBLE); 257 while (pegasus->flags & ETH_REGS_CHANGED) 258 schedule(); 259 remove_wait_queue(&pegasus->ctrl_wait, &wait); 260 set_current_state(TASK_RUNNING); 261 262 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 263 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG; 264 pegasus->dr.wValue = cpu_to_le16(data); 265 pegasus->dr.wIndex = cpu_to_le16(indx); 266 pegasus->dr.wLength = cpu_to_le16(1); 267 pegasus->ctrl_urb->transfer_buffer_length = 1; 268 269 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 270 usb_sndctrlpipe(pegasus->usb, 0), 271 (char *) &pegasus->dr, 272 tmp, 1, ctrl_callback, pegasus); 273 274 add_wait_queue(&pegasus->ctrl_wait, &wait); 275 set_current_state(TASK_UNINTERRUPTIBLE); 276 277 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 278 if (ret == -ENODEV) 279 netif_device_detach(pegasus->net); 280 if (netif_msg_drv(pegasus) && printk_ratelimit()) 281 dev_err(&pegasus->intf->dev, "%s, status %d\n", 282 __func__, ret); 283 goto out; 284 } 285 286 schedule(); 287 out: 288 remove_wait_queue(&pegasus->ctrl_wait, &wait); 289 kfree(tmp); 290 291 return ret; 292 } 293 294 static int update_eth_regs_async(pegasus_t * pegasus) 295 { 296 int ret; 297 298 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 299 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; 300 pegasus->dr.wValue = 0; 301 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0); 302 pegasus->dr.wLength = cpu_to_le16(3); 303 pegasus->ctrl_urb->transfer_buffer_length = 3; 304 305 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 306 usb_sndctrlpipe(pegasus->usb, 0), 307 (char *) &pegasus->dr, 308 pegasus->eth_regs, 3, ctrl_callback, pegasus); 309 310 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 311 if (ret == -ENODEV) 312 netif_device_detach(pegasus->net); 313 if (netif_msg_drv(pegasus)) 314 dev_err(&pegasus->intf->dev, "%s, status %d\n", 315 __func__, ret); 316 } 317 318 return ret; 319 } 320 321 /* Returns 0 on success, error on failure */ 322 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd) 323 { 324 int i; 325 __u8 data[4] = { phy, 0, 0, indx }; 326 __le16 regdi; 327 int ret; 328 329 set_register(pegasus, PhyCtrl, 0); 330 set_registers(pegasus, PhyAddr, sizeof (data), data); 331 set_register(pegasus, PhyCtrl, (indx | PHY_READ)); 332 for (i = 0; i < REG_TIMEOUT; i++) { 333 ret = get_registers(pegasus, PhyCtrl, 1, data); 334 if (ret == -ESHUTDOWN) 335 goto fail; 336 if (data[0] & PHY_DONE) 337 break; 338 } 339 if (i < REG_TIMEOUT) { 340 ret = get_registers(pegasus, PhyData, 2, ®di); 341 *regd = le16_to_cpu(regdi); 342 return ret; 343 } 344 fail: 345 if (netif_msg_drv(pegasus)) 346 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__); 347 348 return ret; 349 } 350 351 static int mdio_read(struct net_device *dev, int phy_id, int loc) 352 { 353 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev); 354 u16 res; 355 356 read_mii_word(pegasus, phy_id, loc, &res); 357 return (int)res; 358 } 359 360 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd) 361 { 362 int i; 363 __u8 data[4] = { phy, 0, 0, indx }; 364 int ret; 365 366 data[1] = (u8) regd; 367 data[2] = (u8) (regd >> 8); 368 set_register(pegasus, PhyCtrl, 0); 369 set_registers(pegasus, PhyAddr, sizeof(data), data); 370 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE)); 371 for (i = 0; i < REG_TIMEOUT; i++) { 372 ret = get_registers(pegasus, PhyCtrl, 1, data); 373 if (ret == -ESHUTDOWN) 374 goto fail; 375 if (data[0] & PHY_DONE) 376 break; 377 } 378 if (i < REG_TIMEOUT) 379 return ret; 380 381 fail: 382 if (netif_msg_drv(pegasus)) 383 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__); 384 return -ETIMEDOUT; 385 } 386 387 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val) 388 { 389 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev); 390 391 write_mii_word(pegasus, phy_id, loc, val); 392 } 393 394 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata) 395 { 396 int i; 397 __u8 tmp; 398 __le16 retdatai; 399 int ret; 400 401 set_register(pegasus, EpromCtrl, 0); 402 set_register(pegasus, EpromOffset, index); 403 set_register(pegasus, EpromCtrl, EPROM_READ); 404 405 for (i = 0; i < REG_TIMEOUT; i++) { 406 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 407 if (tmp & EPROM_DONE) 408 break; 409 if (ret == -ESHUTDOWN) 410 goto fail; 411 } 412 if (i < REG_TIMEOUT) { 413 ret = get_registers(pegasus, EpromData, 2, &retdatai); 414 *retdata = le16_to_cpu(retdatai); 415 return ret; 416 } 417 418 fail: 419 if (netif_msg_drv(pegasus)) 420 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__); 421 return -ETIMEDOUT; 422 } 423 424 #ifdef PEGASUS_WRITE_EEPROM 425 static inline void enable_eprom_write(pegasus_t * pegasus) 426 { 427 __u8 tmp; 428 int ret; 429 430 get_registers(pegasus, EthCtrl2, 1, &tmp); 431 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE); 432 } 433 434 static inline void disable_eprom_write(pegasus_t * pegasus) 435 { 436 __u8 tmp; 437 int ret; 438 439 get_registers(pegasus, EthCtrl2, 1, &tmp); 440 set_register(pegasus, EpromCtrl, 0); 441 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE); 442 } 443 444 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data) 445 { 446 int i; 447 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE }; 448 int ret; 449 450 set_registers(pegasus, EpromOffset, 4, d); 451 enable_eprom_write(pegasus); 452 set_register(pegasus, EpromOffset, index); 453 set_registers(pegasus, EpromData, 2, &data); 454 set_register(pegasus, EpromCtrl, EPROM_WRITE); 455 456 for (i = 0; i < REG_TIMEOUT; i++) { 457 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 458 if (ret == -ESHUTDOWN) 459 goto fail; 460 if (tmp & EPROM_DONE) 461 break; 462 } 463 disable_eprom_write(pegasus); 464 if (i < REG_TIMEOUT) 465 return ret; 466 fail: 467 if (netif_msg_drv(pegasus)) 468 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__); 469 return -ETIMEDOUT; 470 } 471 #endif /* PEGASUS_WRITE_EEPROM */ 472 473 static inline void get_node_id(pegasus_t * pegasus, __u8 * id) 474 { 475 int i; 476 __u16 w16; 477 478 for (i = 0; i < 3; i++) { 479 read_eprom_word(pegasus, i, &w16); 480 ((__le16 *) id)[i] = cpu_to_le16(w16); 481 } 482 } 483 484 static void set_ethernet_addr(pegasus_t * pegasus) 485 { 486 __u8 node_id[6]; 487 488 if (pegasus->features & PEGASUS_II) { 489 get_registers(pegasus, 0x10, sizeof(node_id), node_id); 490 } else { 491 get_node_id(pegasus, node_id); 492 set_registers(pegasus, EthID, sizeof (node_id), node_id); 493 } 494 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id)); 495 } 496 497 static inline int reset_mac(pegasus_t * pegasus) 498 { 499 __u8 data = 0x8; 500 int i; 501 502 set_register(pegasus, EthCtrl1, data); 503 for (i = 0; i < REG_TIMEOUT; i++) { 504 get_registers(pegasus, EthCtrl1, 1, &data); 505 if (~data & 0x08) { 506 if (loopback & 1) 507 break; 508 if (mii_mode && (pegasus->features & HAS_HOME_PNA)) 509 set_register(pegasus, Gpio1, 0x34); 510 else 511 set_register(pegasus, Gpio1, 0x26); 512 set_register(pegasus, Gpio0, pegasus->features); 513 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET); 514 break; 515 } 516 } 517 if (i == REG_TIMEOUT) 518 return -ETIMEDOUT; 519 520 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || 521 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { 522 set_register(pegasus, Gpio0, 0x24); 523 set_register(pegasus, Gpio0, 0x26); 524 } 525 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) { 526 __u16 auxmode; 527 read_mii_word(pegasus, 3, 0x1b, &auxmode); 528 write_mii_word(pegasus, 3, 0x1b, auxmode | 4); 529 } 530 531 return 0; 532 } 533 534 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb) 535 { 536 __u16 linkpart; 537 __u8 data[4]; 538 pegasus_t *pegasus = netdev_priv(dev); 539 int ret; 540 541 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart); 542 data[0] = 0xc9; 543 data[1] = 0; 544 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL)) 545 data[1] |= 0x20; /* set full duplex */ 546 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF)) 547 data[1] |= 0x10; /* set 100 Mbps */ 548 if (mii_mode) 549 data[1] = 0; 550 data[2] = (loopback & 1) ? 0x09 : 0x01; 551 552 memcpy(pegasus->eth_regs, data, sizeof (data)); 553 ret = set_registers(pegasus, EthCtrl0, 3, data); 554 555 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || 556 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 || 557 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { 558 u16 auxmode; 559 read_mii_word(pegasus, 0, 0x1b, &auxmode); 560 write_mii_word(pegasus, 0, 0x1b, auxmode | 4); 561 } 562 563 return ret; 564 } 565 566 static void fill_skb_pool(pegasus_t * pegasus) 567 { 568 int i; 569 570 for (i = 0; i < RX_SKBS; i++) { 571 if (pegasus->rx_pool[i]) 572 continue; 573 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2); 574 /* 575 ** we give up if the allocation fail. the tasklet will be 576 ** rescheduled again anyway... 577 */ 578 if (pegasus->rx_pool[i] == NULL) 579 return; 580 skb_reserve(pegasus->rx_pool[i], 2); 581 } 582 } 583 584 static void free_skb_pool(pegasus_t * pegasus) 585 { 586 int i; 587 588 for (i = 0; i < RX_SKBS; i++) { 589 if (pegasus->rx_pool[i]) { 590 dev_kfree_skb(pegasus->rx_pool[i]); 591 pegasus->rx_pool[i] = NULL; 592 } 593 } 594 } 595 596 static inline struct sk_buff *pull_skb(pegasus_t * pegasus) 597 { 598 int i; 599 struct sk_buff *skb; 600 601 for (i = 0; i < RX_SKBS; i++) { 602 if (likely(pegasus->rx_pool[i] != NULL)) { 603 skb = pegasus->rx_pool[i]; 604 pegasus->rx_pool[i] = NULL; 605 return skb; 606 } 607 } 608 return NULL; 609 } 610 611 static void read_bulk_callback(struct urb *urb) 612 { 613 pegasus_t *pegasus = urb->context; 614 struct net_device *net; 615 int rx_status, count = urb->actual_length; 616 int status = urb->status; 617 u8 *buf = urb->transfer_buffer; 618 __u16 pkt_len; 619 620 if (!pegasus) 621 return; 622 623 net = pegasus->net; 624 if (!netif_device_present(net) || !netif_running(net)) 625 return; 626 627 switch (status) { 628 case 0: 629 break; 630 case -ETIME: 631 if (netif_msg_rx_err(pegasus)) 632 pr_debug("%s: reset MAC\n", net->name); 633 pegasus->flags &= ~PEGASUS_RX_BUSY; 634 break; 635 case -EPIPE: /* stall, or disconnect from TT */ 636 /* FIXME schedule work to clear the halt */ 637 if (netif_msg_rx_err(pegasus)) 638 printk(KERN_WARNING "%s: no rx stall recovery\n", 639 net->name); 640 return; 641 case -ENOENT: 642 case -ECONNRESET: 643 case -ESHUTDOWN: 644 if (netif_msg_ifdown(pegasus)) 645 pr_debug("%s: rx unlink, %d\n", net->name, status); 646 return; 647 default: 648 if (netif_msg_rx_err(pegasus)) 649 pr_debug("%s: RX status %d\n", net->name, status); 650 goto goon; 651 } 652 653 if (!count || count < 4) 654 goto goon; 655 656 rx_status = buf[count - 2]; 657 if (rx_status & 0x1e) { 658 if (netif_msg_rx_err(pegasus)) 659 pr_debug("%s: RX packet error %x\n", 660 net->name, rx_status); 661 pegasus->stats.rx_errors++; 662 if (rx_status & 0x06) // long or runt 663 pegasus->stats.rx_length_errors++; 664 if (rx_status & 0x08) 665 pegasus->stats.rx_crc_errors++; 666 if (rx_status & 0x10) // extra bits 667 pegasus->stats.rx_frame_errors++; 668 goto goon; 669 } 670 if (pegasus->chip == 0x8513) { 671 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer); 672 pkt_len &= 0x0fff; 673 pegasus->rx_skb->data += 2; 674 } else { 675 pkt_len = buf[count - 3] << 8; 676 pkt_len += buf[count - 4]; 677 pkt_len &= 0xfff; 678 pkt_len -= 8; 679 } 680 681 /* 682 * If the packet is unreasonably long, quietly drop it rather than 683 * kernel panicing by calling skb_put. 684 */ 685 if (pkt_len > PEGASUS_MTU) 686 goto goon; 687 688 /* 689 * at this point we are sure pegasus->rx_skb != NULL 690 * so we go ahead and pass up the packet. 691 */ 692 skb_put(pegasus->rx_skb, pkt_len); 693 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net); 694 netif_rx(pegasus->rx_skb); 695 pegasus->stats.rx_packets++; 696 pegasus->stats.rx_bytes += pkt_len; 697 698 if (pegasus->flags & PEGASUS_UNPLUG) 699 return; 700 701 spin_lock(&pegasus->rx_pool_lock); 702 pegasus->rx_skb = pull_skb(pegasus); 703 spin_unlock(&pegasus->rx_pool_lock); 704 705 if (pegasus->rx_skb == NULL) 706 goto tl_sched; 707 goon: 708 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 709 usb_rcvbulkpipe(pegasus->usb, 1), 710 pegasus->rx_skb->data, PEGASUS_MTU + 8, 711 read_bulk_callback, pegasus); 712 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 713 if (rx_status == -ENODEV) 714 netif_device_detach(pegasus->net); 715 else if (rx_status) { 716 pegasus->flags |= PEGASUS_RX_URB_FAIL; 717 goto tl_sched; 718 } else { 719 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 720 } 721 722 return; 723 724 tl_sched: 725 tasklet_schedule(&pegasus->rx_tl); 726 } 727 728 static void rx_fixup(unsigned long data) 729 { 730 pegasus_t *pegasus; 731 unsigned long flags; 732 int status; 733 734 pegasus = (pegasus_t *) data; 735 if (pegasus->flags & PEGASUS_UNPLUG) 736 return; 737 738 spin_lock_irqsave(&pegasus->rx_pool_lock, flags); 739 fill_skb_pool(pegasus); 740 if (pegasus->flags & PEGASUS_RX_URB_FAIL) 741 if (pegasus->rx_skb) 742 goto try_again; 743 if (pegasus->rx_skb == NULL) { 744 pegasus->rx_skb = pull_skb(pegasus); 745 } 746 if (pegasus->rx_skb == NULL) { 747 if (netif_msg_rx_err(pegasus)) 748 printk(KERN_WARNING "%s: low on memory\n", 749 pegasus->net->name); 750 tasklet_schedule(&pegasus->rx_tl); 751 goto done; 752 } 753 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 754 usb_rcvbulkpipe(pegasus->usb, 1), 755 pegasus->rx_skb->data, PEGASUS_MTU + 8, 756 read_bulk_callback, pegasus); 757 try_again: 758 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 759 if (status == -ENODEV) 760 netif_device_detach(pegasus->net); 761 else if (status) { 762 pegasus->flags |= PEGASUS_RX_URB_FAIL; 763 tasklet_schedule(&pegasus->rx_tl); 764 } else { 765 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 766 } 767 done: 768 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags); 769 } 770 771 static void write_bulk_callback(struct urb *urb) 772 { 773 pegasus_t *pegasus = urb->context; 774 struct net_device *net; 775 int status = urb->status; 776 777 if (!pegasus) 778 return; 779 780 net = pegasus->net; 781 782 if (!netif_device_present(net) || !netif_running(net)) 783 return; 784 785 switch (status) { 786 case -EPIPE: 787 /* FIXME schedule_work() to clear the tx halt */ 788 netif_stop_queue(net); 789 if (netif_msg_tx_err(pegasus)) 790 printk(KERN_WARNING "%s: no tx stall recovery\n", 791 net->name); 792 return; 793 case -ENOENT: 794 case -ECONNRESET: 795 case -ESHUTDOWN: 796 if (netif_msg_ifdown(pegasus)) 797 pr_debug("%s: tx unlink, %d\n", net->name, status); 798 return; 799 default: 800 if (netif_msg_tx_err(pegasus)) 801 pr_info("%s: TX status %d\n", net->name, status); 802 /* FALL THROUGH */ 803 case 0: 804 break; 805 } 806 807 net->trans_start = jiffies; 808 netif_wake_queue(net); 809 } 810 811 static void intr_callback(struct urb *urb) 812 { 813 pegasus_t *pegasus = urb->context; 814 struct net_device *net; 815 int res, status = urb->status; 816 817 if (!pegasus) 818 return; 819 net = pegasus->net; 820 821 switch (status) { 822 case 0: 823 break; 824 case -ECONNRESET: /* unlink */ 825 case -ENOENT: 826 case -ESHUTDOWN: 827 return; 828 default: 829 /* some Pegasus-I products report LOTS of data 830 * toggle errors... avoid log spamming 831 */ 832 if (netif_msg_timer(pegasus)) 833 pr_debug("%s: intr status %d\n", net->name, 834 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 && netif_msg_timer(pegasus)) 865 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n", 866 net->name, res); 867 } 868 869 static void pegasus_tx_timeout(struct net_device *net) 870 { 871 pegasus_t *pegasus = netdev_priv(net); 872 if (netif_msg_timer(pegasus)) 873 printk(KERN_WARNING "%s: tx timeout\n", net->name); 874 usb_unlink_urb(pegasus->tx_urb); 875 pegasus->stats.tx_errors++; 876 } 877 878 static int pegasus_start_xmit(struct sk_buff *skb, 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 if (netif_msg_tx_err(pegasus)) 895 printk(KERN_WARNING "%s: fail tx, %d\n", 896 net->name, res); 897 switch (res) { 898 case -EPIPE: /* stall, or disconnect from TT */ 899 /* cleanup should already have been scheduled */ 900 break; 901 case -ENODEV: /* disconnect() upcoming */ 902 case -EPERM: 903 netif_device_detach(pegasus->net); 904 break; 905 default: 906 pegasus->stats.tx_errors++; 907 netif_start_queue(net); 908 } 909 } else { 910 pegasus->stats.tx_packets++; 911 pegasus->stats.tx_bytes += skb->len; 912 net->trans_start = jiffies; 913 } 914 dev_kfree_skb(skb); 915 916 return 0; 917 } 918 919 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev) 920 { 921 return &((pegasus_t *) netdev_priv(dev))->stats; 922 } 923 924 static inline void disable_net_traffic(pegasus_t * pegasus) 925 { 926 int tmp = 0; 927 928 set_registers(pegasus, EthCtrl0, 2, &tmp); 929 } 930 931 static inline void get_interrupt_interval(pegasus_t * pegasus) 932 { 933 __u8 data[2]; 934 935 read_eprom_word(pegasus, 4, (__u16 *) data); 936 if (pegasus->usb->speed != USB_SPEED_HIGH) { 937 if (data[1] < 0x80) { 938 if (netif_msg_timer(pegasus)) 939 dev_info(&pegasus->intf->dev, "intr interval " 940 "changed from %ums to %ums\n", 941 data[1], 0x80); 942 data[1] = 0x80; 943 #ifdef PEGASUS_WRITE_EEPROM 944 write_eprom_word(pegasus, 4, *(__u16 *) data); 945 #endif 946 } 947 } 948 pegasus->intr_interval = data[1]; 949 } 950 951 static void set_carrier(struct net_device *net) 952 { 953 pegasus_t *pegasus = netdev_priv(net); 954 u16 tmp; 955 956 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp)) 957 return; 958 959 if (tmp & BMSR_LSTATUS) 960 netif_carrier_on(net); 961 else 962 netif_carrier_off(net); 963 } 964 965 static void free_all_urbs(pegasus_t * pegasus) 966 { 967 usb_free_urb(pegasus->intr_urb); 968 usb_free_urb(pegasus->tx_urb); 969 usb_free_urb(pegasus->rx_urb); 970 usb_free_urb(pegasus->ctrl_urb); 971 } 972 973 static void unlink_all_urbs(pegasus_t * pegasus) 974 { 975 usb_kill_urb(pegasus->intr_urb); 976 usb_kill_urb(pegasus->tx_urb); 977 usb_kill_urb(pegasus->rx_urb); 978 usb_kill_urb(pegasus->ctrl_urb); 979 } 980 981 static int alloc_urbs(pegasus_t * pegasus) 982 { 983 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 984 if (!pegasus->ctrl_urb) { 985 return 0; 986 } 987 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 988 if (!pegasus->rx_urb) { 989 usb_free_urb(pegasus->ctrl_urb); 990 return 0; 991 } 992 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 993 if (!pegasus->tx_urb) { 994 usb_free_urb(pegasus->rx_urb); 995 usb_free_urb(pegasus->ctrl_urb); 996 return 0; 997 } 998 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 999 if (!pegasus->intr_urb) { 1000 usb_free_urb(pegasus->tx_urb); 1001 usb_free_urb(pegasus->rx_urb); 1002 usb_free_urb(pegasus->ctrl_urb); 1003 return 0; 1004 } 1005 1006 return 1; 1007 } 1008 1009 static int pegasus_open(struct net_device *net) 1010 { 1011 pegasus_t *pegasus = netdev_priv(net); 1012 int res; 1013 1014 if (pegasus->rx_skb == NULL) 1015 pegasus->rx_skb = pull_skb(pegasus); 1016 /* 1017 ** Note: no point to free the pool. it is empty :-) 1018 */ 1019 if (!pegasus->rx_skb) 1020 return -ENOMEM; 1021 1022 res = set_registers(pegasus, EthID, 6, net->dev_addr); 1023 1024 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 1025 usb_rcvbulkpipe(pegasus->usb, 1), 1026 pegasus->rx_skb->data, PEGASUS_MTU + 8, 1027 read_bulk_callback, pegasus); 1028 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) { 1029 if (res == -ENODEV) 1030 netif_device_detach(pegasus->net); 1031 if (netif_msg_ifup(pegasus)) 1032 pr_debug("%s: failed rx_urb, %d", net->name, res); 1033 goto exit; 1034 } 1035 1036 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb, 1037 usb_rcvintpipe(pegasus->usb, 3), 1038 pegasus->intr_buff, sizeof (pegasus->intr_buff), 1039 intr_callback, pegasus, pegasus->intr_interval); 1040 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) { 1041 if (res == -ENODEV) 1042 netif_device_detach(pegasus->net); 1043 if (netif_msg_ifup(pegasus)) 1044 pr_debug("%s: failed intr_urb, %d\n", net->name, res); 1045 usb_kill_urb(pegasus->rx_urb); 1046 goto exit; 1047 } 1048 if ((res = enable_net_traffic(net, pegasus->usb))) { 1049 if (netif_msg_ifup(pegasus)) 1050 pr_debug("%s: can't enable_net_traffic() - %d\n", 1051 net->name, res); 1052 res = -EIO; 1053 usb_kill_urb(pegasus->rx_urb); 1054 usb_kill_urb(pegasus->intr_urb); 1055 free_skb_pool(pegasus); 1056 goto exit; 1057 } 1058 set_carrier(net); 1059 netif_start_queue(net); 1060 if (netif_msg_ifup(pegasus)) 1061 pr_debug("%s: open\n", net->name); 1062 res = 0; 1063 exit: 1064 return res; 1065 } 1066 1067 static int pegasus_close(struct net_device *net) 1068 { 1069 pegasus_t *pegasus = netdev_priv(net); 1070 1071 netif_stop_queue(net); 1072 if (!(pegasus->flags & PEGASUS_UNPLUG)) 1073 disable_net_traffic(pegasus); 1074 tasklet_kill(&pegasus->rx_tl); 1075 unlink_all_urbs(pegasus); 1076 1077 return 0; 1078 } 1079 1080 static void pegasus_get_drvinfo(struct net_device *dev, 1081 struct ethtool_drvinfo *info) 1082 { 1083 pegasus_t *pegasus = netdev_priv(dev); 1084 strncpy(info->driver, driver_name, sizeof (info->driver) - 1); 1085 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1); 1086 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info)); 1087 } 1088 1089 /* also handles three patterns of some kind in hardware */ 1090 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) 1091 1092 static void 1093 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1094 { 1095 pegasus_t *pegasus = netdev_priv(dev); 1096 1097 wol->supported = WAKE_MAGIC | WAKE_PHY; 1098 wol->wolopts = pegasus->wolopts; 1099 } 1100 1101 static int 1102 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1103 { 1104 pegasus_t *pegasus = netdev_priv(dev); 1105 u8 reg78 = 0x04; 1106 1107 if (wol->wolopts & ~WOL_SUPPORTED) 1108 return -EINVAL; 1109 1110 if (wol->wolopts & WAKE_MAGIC) 1111 reg78 |= 0x80; 1112 if (wol->wolopts & WAKE_PHY) 1113 reg78 |= 0x40; 1114 /* FIXME this 0x10 bit still needs to get set in the chip... */ 1115 if (wol->wolopts) 1116 pegasus->eth_regs[0] |= 0x10; 1117 else 1118 pegasus->eth_regs[0] &= ~0x10; 1119 pegasus->wolopts = wol->wolopts; 1120 return set_register(pegasus, WakeupControl, reg78); 1121 } 1122 1123 static inline void pegasus_reset_wol(struct net_device *dev) 1124 { 1125 struct ethtool_wolinfo wol; 1126 1127 memset(&wol, 0, sizeof wol); 1128 (void) pegasus_set_wol(dev, &wol); 1129 } 1130 1131 static int 1132 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1133 { 1134 pegasus_t *pegasus; 1135 1136 pegasus = netdev_priv(dev); 1137 mii_ethtool_gset(&pegasus->mii, ecmd); 1138 return 0; 1139 } 1140 1141 static int 1142 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1143 { 1144 pegasus_t *pegasus = netdev_priv(dev); 1145 return mii_ethtool_sset(&pegasus->mii, ecmd); 1146 } 1147 1148 static int pegasus_nway_reset(struct net_device *dev) 1149 { 1150 pegasus_t *pegasus = netdev_priv(dev); 1151 return mii_nway_restart(&pegasus->mii); 1152 } 1153 1154 static u32 pegasus_get_link(struct net_device *dev) 1155 { 1156 pegasus_t *pegasus = netdev_priv(dev); 1157 return mii_link_ok(&pegasus->mii); 1158 } 1159 1160 static u32 pegasus_get_msglevel(struct net_device *dev) 1161 { 1162 pegasus_t *pegasus = netdev_priv(dev); 1163 return pegasus->msg_enable; 1164 } 1165 1166 static void pegasus_set_msglevel(struct net_device *dev, u32 v) 1167 { 1168 pegasus_t *pegasus = netdev_priv(dev); 1169 pegasus->msg_enable = v; 1170 } 1171 1172 static struct ethtool_ops ops = { 1173 .get_drvinfo = pegasus_get_drvinfo, 1174 .get_settings = pegasus_get_settings, 1175 .set_settings = pegasus_set_settings, 1176 .nway_reset = pegasus_nway_reset, 1177 .get_link = pegasus_get_link, 1178 .get_msglevel = pegasus_get_msglevel, 1179 .set_msglevel = pegasus_set_msglevel, 1180 .get_wol = pegasus_get_wol, 1181 .set_wol = pegasus_set_wol, 1182 }; 1183 1184 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd) 1185 { 1186 __u16 *data = (__u16 *) & rq->ifr_ifru; 1187 pegasus_t *pegasus = netdev_priv(net); 1188 int res; 1189 1190 switch (cmd) { 1191 case SIOCDEVPRIVATE: 1192 data[0] = pegasus->phy; 1193 case SIOCDEVPRIVATE + 1: 1194 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]); 1195 res = 0; 1196 break; 1197 case SIOCDEVPRIVATE + 2: 1198 if (!capable(CAP_NET_ADMIN)) 1199 return -EPERM; 1200 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]); 1201 res = 0; 1202 break; 1203 default: 1204 res = -EOPNOTSUPP; 1205 } 1206 return res; 1207 } 1208 1209 static void pegasus_set_multicast(struct net_device *net) 1210 { 1211 pegasus_t *pegasus = netdev_priv(net); 1212 1213 if (net->flags & IFF_PROMISC) { 1214 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; 1215 if (netif_msg_link(pegasus)) 1216 pr_info("%s: Promiscuous mode enabled.\n", net->name); 1217 } else if (net->mc_count || (net->flags & IFF_ALLMULTI)) { 1218 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; 1219 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1220 if (netif_msg_link(pegasus)) 1221 pr_debug("%s: set allmulti\n", net->name); 1222 } else { 1223 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; 1224 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1225 } 1226 1227 pegasus->ctrl_urb->status = 0; 1228 1229 pegasus->flags |= ETH_REGS_CHANGE; 1230 ctrl_callback(pegasus->ctrl_urb); 1231 } 1232 1233 static __u8 mii_phy_probe(pegasus_t * pegasus) 1234 { 1235 int i; 1236 __u16 tmp; 1237 1238 for (i = 0; i < 32; i++) { 1239 read_mii_word(pegasus, i, MII_BMSR, &tmp); 1240 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) 1241 continue; 1242 else 1243 return i; 1244 } 1245 1246 return 0xff; 1247 } 1248 1249 static inline void setup_pegasus_II(pegasus_t * pegasus) 1250 { 1251 __u8 data = 0xa5; 1252 1253 set_register(pegasus, Reg1d, 0); 1254 set_register(pegasus, Reg7b, 1); 1255 mdelay(100); 1256 if ((pegasus->features & HAS_HOME_PNA) && mii_mode) 1257 set_register(pegasus, Reg7b, 0); 1258 else 1259 set_register(pegasus, Reg7b, 2); 1260 1261 set_register(pegasus, 0x83, data); 1262 get_registers(pegasus, 0x83, 1, &data); 1263 1264 if (data == 0xa5) { 1265 pegasus->chip = 0x8513; 1266 } else { 1267 pegasus->chip = 0; 1268 } 1269 1270 set_register(pegasus, 0x80, 0xc0); 1271 set_register(pegasus, 0x83, 0xff); 1272 set_register(pegasus, 0x84, 0x01); 1273 1274 if (pegasus->features & HAS_HOME_PNA && mii_mode) 1275 set_register(pegasus, Reg81, 6); 1276 else 1277 set_register(pegasus, Reg81, 2); 1278 } 1279 1280 1281 static int pegasus_count; 1282 static struct workqueue_struct *pegasus_workqueue = NULL; 1283 #define CARRIER_CHECK_DELAY (2 * HZ) 1284 1285 static void check_carrier(struct work_struct *work) 1286 { 1287 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work); 1288 set_carrier(pegasus->net); 1289 if (!(pegasus->flags & PEGASUS_UNPLUG)) { 1290 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1291 CARRIER_CHECK_DELAY); 1292 } 1293 } 1294 1295 static int pegasus_blacklisted(struct usb_device *udev) 1296 { 1297 struct usb_device_descriptor *udd = &udev->descriptor; 1298 1299 /* Special quirk to keep the driver from handling the Belkin Bluetooth 1300 * dongle which happens to have the same ID. 1301 */ 1302 if ((udd->idVendor == VENDOR_BELKIN && udd->idProduct == 0x0121) && 1303 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) && 1304 (udd->bDeviceProtocol == 1)) 1305 return 1; 1306 1307 return 0; 1308 } 1309 1310 /* we rely on probe() and remove() being serialized so we 1311 * don't need extra locking on pegasus_count. 1312 */ 1313 static void pegasus_dec_workqueue(void) 1314 { 1315 pegasus_count--; 1316 if (pegasus_count == 0) { 1317 destroy_workqueue(pegasus_workqueue); 1318 pegasus_workqueue = NULL; 1319 } 1320 } 1321 1322 static int pegasus_probe(struct usb_interface *intf, 1323 const struct usb_device_id *id) 1324 { 1325 struct usb_device *dev = interface_to_usbdev(intf); 1326 struct net_device *net; 1327 pegasus_t *pegasus; 1328 int dev_index = id - pegasus_ids; 1329 int res = -ENOMEM; 1330 1331 if (pegasus_blacklisted(dev)) 1332 return -ENODEV; 1333 1334 if (pegasus_count == 0) { 1335 pegasus_workqueue = create_singlethread_workqueue("pegasus"); 1336 if (!pegasus_workqueue) 1337 return -ENOMEM; 1338 } 1339 pegasus_count++; 1340 1341 usb_get_dev(dev); 1342 1343 net = alloc_etherdev(sizeof(struct pegasus)); 1344 if (!net) { 1345 dev_err(&intf->dev, "can't allocate %s\n", "device"); 1346 goto out; 1347 } 1348 1349 pegasus = netdev_priv(net); 1350 pegasus->dev_index = dev_index; 1351 init_waitqueue_head(&pegasus->ctrl_wait); 1352 1353 if (!alloc_urbs(pegasus)) { 1354 dev_err(&intf->dev, "can't allocate %s\n", "urbs"); 1355 goto out1; 1356 } 1357 1358 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus); 1359 1360 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier); 1361 1362 pegasus->intf = intf; 1363 pegasus->usb = dev; 1364 pegasus->net = net; 1365 1366 1367 net->watchdog_timeo = PEGASUS_TX_TIMEOUT; 1368 net->netdev_ops = &pegasus_netdev_ops; 1369 SET_ETHTOOL_OPS(net, &ops); 1370 pegasus->mii.dev = net; 1371 pegasus->mii.mdio_read = mdio_read; 1372 pegasus->mii.mdio_write = mdio_write; 1373 pegasus->mii.phy_id_mask = 0x1f; 1374 pegasus->mii.reg_num_mask = 0x1f; 1375 spin_lock_init(&pegasus->rx_pool_lock); 1376 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV 1377 | NETIF_MSG_PROBE | NETIF_MSG_LINK); 1378 1379 pegasus->features = usb_dev_id[dev_index].private; 1380 get_interrupt_interval(pegasus); 1381 if (reset_mac(pegasus)) { 1382 dev_err(&intf->dev, "can't reset MAC\n"); 1383 res = -EIO; 1384 goto out2; 1385 } 1386 set_ethernet_addr(pegasus); 1387 fill_skb_pool(pegasus); 1388 if (pegasus->features & PEGASUS_II) { 1389 dev_info(&intf->dev, "setup Pegasus II specific registers\n"); 1390 setup_pegasus_II(pegasus); 1391 } 1392 pegasus->phy = mii_phy_probe(pegasus); 1393 if (pegasus->phy == 0xff) { 1394 dev_warn(&intf->dev, "can't locate MII phy, using default\n"); 1395 pegasus->phy = 1; 1396 } 1397 pegasus->mii.phy_id = pegasus->phy; 1398 usb_set_intfdata(intf, pegasus); 1399 SET_NETDEV_DEV(net, &intf->dev); 1400 pegasus_reset_wol(net); 1401 res = register_netdev(net); 1402 if (res) 1403 goto out3; 1404 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1405 CARRIER_CHECK_DELAY); 1406 1407 dev_info(&intf->dev, "%s, %s, %pM\n", 1408 net->name, 1409 usb_dev_id[dev_index].name, 1410 net->dev_addr); 1411 return 0; 1412 1413 out3: 1414 usb_set_intfdata(intf, NULL); 1415 free_skb_pool(pegasus); 1416 out2: 1417 free_all_urbs(pegasus); 1418 out1: 1419 free_netdev(net); 1420 out: 1421 usb_put_dev(dev); 1422 pegasus_dec_workqueue(); 1423 return res; 1424 } 1425 1426 static void pegasus_disconnect(struct usb_interface *intf) 1427 { 1428 struct pegasus *pegasus = usb_get_intfdata(intf); 1429 1430 usb_set_intfdata(intf, NULL); 1431 if (!pegasus) { 1432 dev_dbg(&intf->dev, "unregistering non-bound device?\n"); 1433 return; 1434 } 1435 1436 pegasus->flags |= PEGASUS_UNPLUG; 1437 cancel_delayed_work(&pegasus->carrier_check); 1438 unregister_netdev(pegasus->net); 1439 usb_put_dev(interface_to_usbdev(intf)); 1440 unlink_all_urbs(pegasus); 1441 free_all_urbs(pegasus); 1442 free_skb_pool(pegasus); 1443 if (pegasus->rx_skb != NULL) { 1444 dev_kfree_skb(pegasus->rx_skb); 1445 pegasus->rx_skb = NULL; 1446 } 1447 free_netdev(pegasus->net); 1448 pegasus_dec_workqueue(); 1449 } 1450 1451 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message) 1452 { 1453 struct pegasus *pegasus = usb_get_intfdata(intf); 1454 1455 netif_device_detach (pegasus->net); 1456 cancel_delayed_work(&pegasus->carrier_check); 1457 if (netif_running(pegasus->net)) { 1458 usb_kill_urb(pegasus->rx_urb); 1459 usb_kill_urb(pegasus->intr_urb); 1460 } 1461 return 0; 1462 } 1463 1464 static int pegasus_resume (struct usb_interface *intf) 1465 { 1466 struct pegasus *pegasus = usb_get_intfdata(intf); 1467 1468 netif_device_attach (pegasus->net); 1469 if (netif_running(pegasus->net)) { 1470 pegasus->rx_urb->status = 0; 1471 pegasus->rx_urb->actual_length = 0; 1472 read_bulk_callback(pegasus->rx_urb); 1473 1474 pegasus->intr_urb->status = 0; 1475 pegasus->intr_urb->actual_length = 0; 1476 intr_callback(pegasus->intr_urb); 1477 } 1478 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1479 CARRIER_CHECK_DELAY); 1480 return 0; 1481 } 1482 1483 static const struct net_device_ops pegasus_netdev_ops = { 1484 .ndo_open = pegasus_open, 1485 .ndo_stop = pegasus_close, 1486 .ndo_do_ioctl = pegasus_ioctl, 1487 .ndo_start_xmit = pegasus_start_xmit, 1488 .ndo_set_multicast_list = pegasus_set_multicast, 1489 .ndo_get_stats = pegasus_netdev_stats, 1490 .ndo_tx_timeout = pegasus_tx_timeout, 1491 }; 1492 1493 static struct usb_driver pegasus_driver = { 1494 .name = driver_name, 1495 .probe = pegasus_probe, 1496 .disconnect = pegasus_disconnect, 1497 .id_table = pegasus_ids, 1498 .suspend = pegasus_suspend, 1499 .resume = pegasus_resume, 1500 }; 1501 1502 static void __init parse_id(char *id) 1503 { 1504 unsigned int vendor_id=0, device_id=0, flags=0, i=0; 1505 char *token, *name=NULL; 1506 1507 if ((token = strsep(&id, ":")) != NULL) 1508 name = token; 1509 /* name now points to a null terminated string*/ 1510 if ((token = strsep(&id, ":")) != NULL) 1511 vendor_id = simple_strtoul(token, NULL, 16); 1512 if ((token = strsep(&id, ":")) != NULL) 1513 device_id = simple_strtoul(token, NULL, 16); 1514 flags = simple_strtoul(id, NULL, 16); 1515 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n", 1516 driver_name, name, vendor_id, device_id, flags); 1517 1518 if (vendor_id > 0x10000 || vendor_id == 0) 1519 return; 1520 if (device_id > 0x10000 || device_id == 0) 1521 return; 1522 1523 for (i=0; usb_dev_id[i].name; i++); 1524 usb_dev_id[i].name = name; 1525 usb_dev_id[i].vendor = vendor_id; 1526 usb_dev_id[i].device = device_id; 1527 usb_dev_id[i].private = flags; 1528 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; 1529 pegasus_ids[i].idVendor = vendor_id; 1530 pegasus_ids[i].idProduct = device_id; 1531 } 1532 1533 static int __init pegasus_init(void) 1534 { 1535 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION); 1536 if (devid) 1537 parse_id(devid); 1538 return usb_register(&pegasus_driver); 1539 } 1540 1541 static void __exit pegasus_exit(void) 1542 { 1543 usb_deregister(&pegasus_driver); 1544 } 1545 1546 module_init(pegasus_init); 1547 module_exit(pegasus_exit); 1548