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 = cpu_to_le16(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 __le16 le_data = cpu_to_le16(data); 450 451 set_registers(pegasus, EpromOffset, 4, d); 452 enable_eprom_write(pegasus); 453 set_register(pegasus, EpromOffset, index); 454 set_registers(pegasus, EpromData, 2, &le_data); 455 set_register(pegasus, EpromCtrl, EPROM_WRITE); 456 457 for (i = 0; i < REG_TIMEOUT; i++) { 458 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 459 if (ret == -ESHUTDOWN) 460 goto fail; 461 if (tmp & EPROM_DONE) 462 break; 463 } 464 disable_eprom_write(pegasus); 465 if (i < REG_TIMEOUT) 466 return ret; 467 fail: 468 if (netif_msg_drv(pegasus)) 469 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__); 470 return -ETIMEDOUT; 471 } 472 #endif /* PEGASUS_WRITE_EEPROM */ 473 474 static inline void get_node_id(pegasus_t * pegasus, __u8 * id) 475 { 476 int i; 477 __u16 w16; 478 479 for (i = 0; i < 3; i++) { 480 read_eprom_word(pegasus, i, &w16); 481 ((__le16 *) id)[i] = cpu_to_le16(w16); 482 } 483 } 484 485 static void set_ethernet_addr(pegasus_t * pegasus) 486 { 487 __u8 node_id[6]; 488 489 if (pegasus->features & PEGASUS_II) { 490 get_registers(pegasus, 0x10, sizeof(node_id), node_id); 491 } else { 492 get_node_id(pegasus, node_id); 493 set_registers(pegasus, EthID, sizeof (node_id), node_id); 494 } 495 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id)); 496 } 497 498 static inline int reset_mac(pegasus_t * pegasus) 499 { 500 __u8 data = 0x8; 501 int i; 502 503 set_register(pegasus, EthCtrl1, data); 504 for (i = 0; i < REG_TIMEOUT; i++) { 505 get_registers(pegasus, EthCtrl1, 1, &data); 506 if (~data & 0x08) { 507 if (loopback & 1) 508 break; 509 if (mii_mode && (pegasus->features & HAS_HOME_PNA)) 510 set_register(pegasus, Gpio1, 0x34); 511 else 512 set_register(pegasus, Gpio1, 0x26); 513 set_register(pegasus, Gpio0, pegasus->features); 514 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET); 515 break; 516 } 517 } 518 if (i == REG_TIMEOUT) 519 return -ETIMEDOUT; 520 521 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || 522 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { 523 set_register(pegasus, Gpio0, 0x24); 524 set_register(pegasus, Gpio0, 0x26); 525 } 526 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) { 527 __u16 auxmode; 528 read_mii_word(pegasus, 3, 0x1b, &auxmode); 529 write_mii_word(pegasus, 3, 0x1b, auxmode | 4); 530 } 531 532 return 0; 533 } 534 535 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb) 536 { 537 __u16 linkpart; 538 __u8 data[4]; 539 pegasus_t *pegasus = netdev_priv(dev); 540 int ret; 541 542 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart); 543 data[0] = 0xc9; 544 data[1] = 0; 545 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL)) 546 data[1] |= 0x20; /* set full duplex */ 547 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF)) 548 data[1] |= 0x10; /* set 100 Mbps */ 549 if (mii_mode) 550 data[1] = 0; 551 data[2] = (loopback & 1) ? 0x09 : 0x01; 552 553 memcpy(pegasus->eth_regs, data, sizeof (data)); 554 ret = set_registers(pegasus, EthCtrl0, 3, data); 555 556 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || 557 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 || 558 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { 559 u16 auxmode; 560 read_mii_word(pegasus, 0, 0x1b, &auxmode); 561 write_mii_word(pegasus, 0, 0x1b, auxmode | 4); 562 } 563 564 return ret; 565 } 566 567 static void fill_skb_pool(pegasus_t * pegasus) 568 { 569 int i; 570 571 for (i = 0; i < RX_SKBS; i++) { 572 if (pegasus->rx_pool[i]) 573 continue; 574 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2); 575 /* 576 ** we give up if the allocation fail. the tasklet will be 577 ** rescheduled again anyway... 578 */ 579 if (pegasus->rx_pool[i] == NULL) 580 return; 581 skb_reserve(pegasus->rx_pool[i], 2); 582 } 583 } 584 585 static void free_skb_pool(pegasus_t * pegasus) 586 { 587 int i; 588 589 for (i = 0; i < RX_SKBS; i++) { 590 if (pegasus->rx_pool[i]) { 591 dev_kfree_skb(pegasus->rx_pool[i]); 592 pegasus->rx_pool[i] = NULL; 593 } 594 } 595 } 596 597 static inline struct sk_buff *pull_skb(pegasus_t * pegasus) 598 { 599 int i; 600 struct sk_buff *skb; 601 602 for (i = 0; i < RX_SKBS; i++) { 603 if (likely(pegasus->rx_pool[i] != NULL)) { 604 skb = pegasus->rx_pool[i]; 605 pegasus->rx_pool[i] = NULL; 606 return skb; 607 } 608 } 609 return NULL; 610 } 611 612 static void read_bulk_callback(struct urb *urb) 613 { 614 pegasus_t *pegasus = urb->context; 615 struct net_device *net; 616 int rx_status, count = urb->actual_length; 617 int status = urb->status; 618 u8 *buf = urb->transfer_buffer; 619 __u16 pkt_len; 620 621 if (!pegasus) 622 return; 623 624 net = pegasus->net; 625 if (!netif_device_present(net) || !netif_running(net)) 626 return; 627 628 switch (status) { 629 case 0: 630 break; 631 case -ETIME: 632 if (netif_msg_rx_err(pegasus)) 633 pr_debug("%s: reset MAC\n", net->name); 634 pegasus->flags &= ~PEGASUS_RX_BUSY; 635 break; 636 case -EPIPE: /* stall, or disconnect from TT */ 637 /* FIXME schedule work to clear the halt */ 638 if (netif_msg_rx_err(pegasus)) 639 printk(KERN_WARNING "%s: no rx stall recovery\n", 640 net->name); 641 return; 642 case -ENOENT: 643 case -ECONNRESET: 644 case -ESHUTDOWN: 645 if (netif_msg_ifdown(pegasus)) 646 pr_debug("%s: rx unlink, %d\n", net->name, status); 647 return; 648 default: 649 if (netif_msg_rx_err(pegasus)) 650 pr_debug("%s: RX status %d\n", net->name, status); 651 goto goon; 652 } 653 654 if (!count || count < 4) 655 goto goon; 656 657 rx_status = buf[count - 2]; 658 if (rx_status & 0x1e) { 659 if (netif_msg_rx_err(pegasus)) 660 pr_debug("%s: RX packet error %x\n", 661 net->name, rx_status); 662 pegasus->stats.rx_errors++; 663 if (rx_status & 0x06) // long or runt 664 pegasus->stats.rx_length_errors++; 665 if (rx_status & 0x08) 666 pegasus->stats.rx_crc_errors++; 667 if (rx_status & 0x10) // extra bits 668 pegasus->stats.rx_frame_errors++; 669 goto goon; 670 } 671 if (pegasus->chip == 0x8513) { 672 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer); 673 pkt_len &= 0x0fff; 674 pegasus->rx_skb->data += 2; 675 } else { 676 pkt_len = buf[count - 3] << 8; 677 pkt_len += buf[count - 4]; 678 pkt_len &= 0xfff; 679 pkt_len -= 8; 680 } 681 682 /* 683 * If the packet is unreasonably long, quietly drop it rather than 684 * kernel panicing by calling skb_put. 685 */ 686 if (pkt_len > PEGASUS_MTU) 687 goto goon; 688 689 /* 690 * at this point we are sure pegasus->rx_skb != NULL 691 * so we go ahead and pass up the packet. 692 */ 693 skb_put(pegasus->rx_skb, pkt_len); 694 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net); 695 netif_rx(pegasus->rx_skb); 696 pegasus->stats.rx_packets++; 697 pegasus->stats.rx_bytes += pkt_len; 698 699 if (pegasus->flags & PEGASUS_UNPLUG) 700 return; 701 702 spin_lock(&pegasus->rx_pool_lock); 703 pegasus->rx_skb = pull_skb(pegasus); 704 spin_unlock(&pegasus->rx_pool_lock); 705 706 if (pegasus->rx_skb == NULL) 707 goto tl_sched; 708 goon: 709 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 710 usb_rcvbulkpipe(pegasus->usb, 1), 711 pegasus->rx_skb->data, PEGASUS_MTU + 8, 712 read_bulk_callback, pegasus); 713 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 714 if (rx_status == -ENODEV) 715 netif_device_detach(pegasus->net); 716 else if (rx_status) { 717 pegasus->flags |= PEGASUS_RX_URB_FAIL; 718 goto tl_sched; 719 } else { 720 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 721 } 722 723 return; 724 725 tl_sched: 726 tasklet_schedule(&pegasus->rx_tl); 727 } 728 729 static void rx_fixup(unsigned long data) 730 { 731 pegasus_t *pegasus; 732 unsigned long flags; 733 int status; 734 735 pegasus = (pegasus_t *) data; 736 if (pegasus->flags & PEGASUS_UNPLUG) 737 return; 738 739 spin_lock_irqsave(&pegasus->rx_pool_lock, flags); 740 fill_skb_pool(pegasus); 741 if (pegasus->flags & PEGASUS_RX_URB_FAIL) 742 if (pegasus->rx_skb) 743 goto try_again; 744 if (pegasus->rx_skb == NULL) { 745 pegasus->rx_skb = pull_skb(pegasus); 746 } 747 if (pegasus->rx_skb == NULL) { 748 if (netif_msg_rx_err(pegasus)) 749 printk(KERN_WARNING "%s: low on memory\n", 750 pegasus->net->name); 751 tasklet_schedule(&pegasus->rx_tl); 752 goto done; 753 } 754 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 755 usb_rcvbulkpipe(pegasus->usb, 1), 756 pegasus->rx_skb->data, PEGASUS_MTU + 8, 757 read_bulk_callback, pegasus); 758 try_again: 759 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 760 if (status == -ENODEV) 761 netif_device_detach(pegasus->net); 762 else if (status) { 763 pegasus->flags |= PEGASUS_RX_URB_FAIL; 764 tasklet_schedule(&pegasus->rx_tl); 765 } else { 766 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 767 } 768 done: 769 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags); 770 } 771 772 static void write_bulk_callback(struct urb *urb) 773 { 774 pegasus_t *pegasus = urb->context; 775 struct net_device *net; 776 int status = urb->status; 777 778 if (!pegasus) 779 return; 780 781 net = pegasus->net; 782 783 if (!netif_device_present(net) || !netif_running(net)) 784 return; 785 786 switch (status) { 787 case -EPIPE: 788 /* FIXME schedule_work() to clear the tx halt */ 789 netif_stop_queue(net); 790 if (netif_msg_tx_err(pegasus)) 791 printk(KERN_WARNING "%s: no tx stall recovery\n", 792 net->name); 793 return; 794 case -ENOENT: 795 case -ECONNRESET: 796 case -ESHUTDOWN: 797 if (netif_msg_ifdown(pegasus)) 798 pr_debug("%s: tx unlink, %d\n", net->name, status); 799 return; 800 default: 801 if (netif_msg_tx_err(pegasus)) 802 pr_info("%s: TX status %d\n", net->name, status); 803 /* FALL THROUGH */ 804 case 0: 805 break; 806 } 807 808 net->trans_start = jiffies; 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 if (netif_msg_timer(pegasus)) 834 pr_debug("%s: intr status %d\n", net->name, 835 status); 836 } 837 838 if (urb->actual_length >= 6) { 839 u8 * d = urb->transfer_buffer; 840 841 /* byte 0 == tx_status1, reg 2B */ 842 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL 843 |LATE_COL|JABBER_TIMEOUT)) { 844 pegasus->stats.tx_errors++; 845 if (d[0] & TX_UNDERRUN) 846 pegasus->stats.tx_fifo_errors++; 847 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT)) 848 pegasus->stats.tx_aborted_errors++; 849 if (d[0] & LATE_COL) 850 pegasus->stats.tx_window_errors++; 851 } 852 853 /* d[5].LINK_STATUS lies on some adapters. 854 * d[0].NO_CARRIER kicks in only with failed TX. 855 * ... so monitoring with MII may be safest. 856 */ 857 858 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */ 859 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4]; 860 } 861 862 res = usb_submit_urb(urb, GFP_ATOMIC); 863 if (res == -ENODEV) 864 netif_device_detach(pegasus->net); 865 if (res && netif_msg_timer(pegasus)) 866 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n", 867 net->name, res); 868 } 869 870 static void pegasus_tx_timeout(struct net_device *net) 871 { 872 pegasus_t *pegasus = netdev_priv(net); 873 if (netif_msg_timer(pegasus)) 874 printk(KERN_WARNING "%s: tx timeout\n", net->name); 875 usb_unlink_urb(pegasus->tx_urb); 876 pegasus->stats.tx_errors++; 877 } 878 879 static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb, 880 struct net_device *net) 881 { 882 pegasus_t *pegasus = netdev_priv(net); 883 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3; 884 int res; 885 __u16 l16 = skb->len; 886 887 netif_stop_queue(net); 888 889 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16); 890 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len); 891 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb, 892 usb_sndbulkpipe(pegasus->usb, 2), 893 pegasus->tx_buff, count, 894 write_bulk_callback, pegasus); 895 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) { 896 if (netif_msg_tx_err(pegasus)) 897 printk(KERN_WARNING "%s: fail tx, %d\n", 898 net->name, res); 899 switch (res) { 900 case -EPIPE: /* stall, or disconnect from TT */ 901 /* cleanup should already have been scheduled */ 902 break; 903 case -ENODEV: /* disconnect() upcoming */ 904 case -EPERM: 905 netif_device_detach(pegasus->net); 906 break; 907 default: 908 pegasus->stats.tx_errors++; 909 netif_start_queue(net); 910 } 911 } else { 912 pegasus->stats.tx_packets++; 913 pegasus->stats.tx_bytes += skb->len; 914 net->trans_start = jiffies; 915 } 916 dev_kfree_skb(skb); 917 918 return NETDEV_TX_OK; 919 } 920 921 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev) 922 { 923 return &((pegasus_t *) netdev_priv(dev))->stats; 924 } 925 926 static inline void disable_net_traffic(pegasus_t * pegasus) 927 { 928 __le16 tmp = cpu_to_le16(0); 929 930 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp); 931 } 932 933 static inline void get_interrupt_interval(pegasus_t * pegasus) 934 { 935 u16 data; 936 u8 interval; 937 938 read_eprom_word(pegasus, 4, &data); 939 interval = data >> 8; 940 if (pegasus->usb->speed != USB_SPEED_HIGH) { 941 if (interval < 0x80) { 942 if (netif_msg_timer(pegasus)) 943 dev_info(&pegasus->intf->dev, "intr interval " 944 "changed from %ums to %ums\n", 945 interval, 0x80); 946 interval = 0x80; 947 data = (data & 0x00FF) | ((u16)interval << 8); 948 #ifdef PEGASUS_WRITE_EEPROM 949 write_eprom_word(pegasus, 4, data); 950 #endif 951 } 952 } 953 pegasus->intr_interval = interval; 954 } 955 956 static void set_carrier(struct net_device *net) 957 { 958 pegasus_t *pegasus = netdev_priv(net); 959 u16 tmp; 960 961 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp)) 962 return; 963 964 if (tmp & BMSR_LSTATUS) 965 netif_carrier_on(net); 966 else 967 netif_carrier_off(net); 968 } 969 970 static void free_all_urbs(pegasus_t * pegasus) 971 { 972 usb_free_urb(pegasus->intr_urb); 973 usb_free_urb(pegasus->tx_urb); 974 usb_free_urb(pegasus->rx_urb); 975 usb_free_urb(pegasus->ctrl_urb); 976 } 977 978 static void unlink_all_urbs(pegasus_t * pegasus) 979 { 980 usb_kill_urb(pegasus->intr_urb); 981 usb_kill_urb(pegasus->tx_urb); 982 usb_kill_urb(pegasus->rx_urb); 983 usb_kill_urb(pegasus->ctrl_urb); 984 } 985 986 static int alloc_urbs(pegasus_t * pegasus) 987 { 988 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 989 if (!pegasus->ctrl_urb) { 990 return 0; 991 } 992 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 993 if (!pegasus->rx_urb) { 994 usb_free_urb(pegasus->ctrl_urb); 995 return 0; 996 } 997 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 998 if (!pegasus->tx_urb) { 999 usb_free_urb(pegasus->rx_urb); 1000 usb_free_urb(pegasus->ctrl_urb); 1001 return 0; 1002 } 1003 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 1004 if (!pegasus->intr_urb) { 1005 usb_free_urb(pegasus->tx_urb); 1006 usb_free_urb(pegasus->rx_urb); 1007 usb_free_urb(pegasus->ctrl_urb); 1008 return 0; 1009 } 1010 1011 return 1; 1012 } 1013 1014 static int pegasus_open(struct net_device *net) 1015 { 1016 pegasus_t *pegasus = netdev_priv(net); 1017 int res; 1018 1019 if (pegasus->rx_skb == NULL) 1020 pegasus->rx_skb = pull_skb(pegasus); 1021 /* 1022 ** Note: no point to free the pool. it is empty :-) 1023 */ 1024 if (!pegasus->rx_skb) 1025 return -ENOMEM; 1026 1027 res = set_registers(pegasus, EthID, 6, net->dev_addr); 1028 1029 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 1030 usb_rcvbulkpipe(pegasus->usb, 1), 1031 pegasus->rx_skb->data, PEGASUS_MTU + 8, 1032 read_bulk_callback, pegasus); 1033 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) { 1034 if (res == -ENODEV) 1035 netif_device_detach(pegasus->net); 1036 if (netif_msg_ifup(pegasus)) 1037 pr_debug("%s: failed rx_urb, %d", net->name, res); 1038 goto exit; 1039 } 1040 1041 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb, 1042 usb_rcvintpipe(pegasus->usb, 3), 1043 pegasus->intr_buff, sizeof (pegasus->intr_buff), 1044 intr_callback, pegasus, pegasus->intr_interval); 1045 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) { 1046 if (res == -ENODEV) 1047 netif_device_detach(pegasus->net); 1048 if (netif_msg_ifup(pegasus)) 1049 pr_debug("%s: failed intr_urb, %d\n", net->name, res); 1050 usb_kill_urb(pegasus->rx_urb); 1051 goto exit; 1052 } 1053 if ((res = enable_net_traffic(net, pegasus->usb))) { 1054 if (netif_msg_ifup(pegasus)) 1055 pr_debug("%s: can't enable_net_traffic() - %d\n", 1056 net->name, res); 1057 res = -EIO; 1058 usb_kill_urb(pegasus->rx_urb); 1059 usb_kill_urb(pegasus->intr_urb); 1060 free_skb_pool(pegasus); 1061 goto exit; 1062 } 1063 set_carrier(net); 1064 netif_start_queue(net); 1065 if (netif_msg_ifup(pegasus)) 1066 pr_debug("%s: open\n", net->name); 1067 res = 0; 1068 exit: 1069 return res; 1070 } 1071 1072 static int pegasus_close(struct net_device *net) 1073 { 1074 pegasus_t *pegasus = netdev_priv(net); 1075 1076 netif_stop_queue(net); 1077 if (!(pegasus->flags & PEGASUS_UNPLUG)) 1078 disable_net_traffic(pegasus); 1079 tasklet_kill(&pegasus->rx_tl); 1080 unlink_all_urbs(pegasus); 1081 1082 return 0; 1083 } 1084 1085 static void pegasus_get_drvinfo(struct net_device *dev, 1086 struct ethtool_drvinfo *info) 1087 { 1088 pegasus_t *pegasus = netdev_priv(dev); 1089 strncpy(info->driver, driver_name, sizeof (info->driver) - 1); 1090 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1); 1091 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info)); 1092 } 1093 1094 /* also handles three patterns of some kind in hardware */ 1095 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) 1096 1097 static void 1098 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1099 { 1100 pegasus_t *pegasus = netdev_priv(dev); 1101 1102 wol->supported = WAKE_MAGIC | WAKE_PHY; 1103 wol->wolopts = pegasus->wolopts; 1104 } 1105 1106 static int 1107 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1108 { 1109 pegasus_t *pegasus = netdev_priv(dev); 1110 u8 reg78 = 0x04; 1111 1112 if (wol->wolopts & ~WOL_SUPPORTED) 1113 return -EINVAL; 1114 1115 if (wol->wolopts & WAKE_MAGIC) 1116 reg78 |= 0x80; 1117 if (wol->wolopts & WAKE_PHY) 1118 reg78 |= 0x40; 1119 /* FIXME this 0x10 bit still needs to get set in the chip... */ 1120 if (wol->wolopts) 1121 pegasus->eth_regs[0] |= 0x10; 1122 else 1123 pegasus->eth_regs[0] &= ~0x10; 1124 pegasus->wolopts = wol->wolopts; 1125 return set_register(pegasus, WakeupControl, reg78); 1126 } 1127 1128 static inline void pegasus_reset_wol(struct net_device *dev) 1129 { 1130 struct ethtool_wolinfo wol; 1131 1132 memset(&wol, 0, sizeof wol); 1133 (void) pegasus_set_wol(dev, &wol); 1134 } 1135 1136 static int 1137 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1138 { 1139 pegasus_t *pegasus; 1140 1141 pegasus = netdev_priv(dev); 1142 mii_ethtool_gset(&pegasus->mii, ecmd); 1143 return 0; 1144 } 1145 1146 static int 1147 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1148 { 1149 pegasus_t *pegasus = netdev_priv(dev); 1150 return mii_ethtool_sset(&pegasus->mii, ecmd); 1151 } 1152 1153 static int pegasus_nway_reset(struct net_device *dev) 1154 { 1155 pegasus_t *pegasus = netdev_priv(dev); 1156 return mii_nway_restart(&pegasus->mii); 1157 } 1158 1159 static u32 pegasus_get_link(struct net_device *dev) 1160 { 1161 pegasus_t *pegasus = netdev_priv(dev); 1162 return mii_link_ok(&pegasus->mii); 1163 } 1164 1165 static u32 pegasus_get_msglevel(struct net_device *dev) 1166 { 1167 pegasus_t *pegasus = netdev_priv(dev); 1168 return pegasus->msg_enable; 1169 } 1170 1171 static void pegasus_set_msglevel(struct net_device *dev, u32 v) 1172 { 1173 pegasus_t *pegasus = netdev_priv(dev); 1174 pegasus->msg_enable = v; 1175 } 1176 1177 static const struct ethtool_ops ops = { 1178 .get_drvinfo = pegasus_get_drvinfo, 1179 .get_settings = pegasus_get_settings, 1180 .set_settings = pegasus_set_settings, 1181 .nway_reset = pegasus_nway_reset, 1182 .get_link = pegasus_get_link, 1183 .get_msglevel = pegasus_get_msglevel, 1184 .set_msglevel = pegasus_set_msglevel, 1185 .get_wol = pegasus_get_wol, 1186 .set_wol = pegasus_set_wol, 1187 }; 1188 1189 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd) 1190 { 1191 __u16 *data = (__u16 *) & rq->ifr_ifru; 1192 pegasus_t *pegasus = netdev_priv(net); 1193 int res; 1194 1195 switch (cmd) { 1196 case SIOCDEVPRIVATE: 1197 data[0] = pegasus->phy; 1198 case SIOCDEVPRIVATE + 1: 1199 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]); 1200 res = 0; 1201 break; 1202 case SIOCDEVPRIVATE + 2: 1203 if (!capable(CAP_NET_ADMIN)) 1204 return -EPERM; 1205 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]); 1206 res = 0; 1207 break; 1208 default: 1209 res = -EOPNOTSUPP; 1210 } 1211 return res; 1212 } 1213 1214 static void pegasus_set_multicast(struct net_device *net) 1215 { 1216 pegasus_t *pegasus = netdev_priv(net); 1217 1218 if (net->flags & IFF_PROMISC) { 1219 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; 1220 if (netif_msg_link(pegasus)) 1221 pr_info("%s: Promiscuous mode enabled.\n", net->name); 1222 } else if (net->mc_count || (net->flags & IFF_ALLMULTI)) { 1223 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; 1224 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1225 if (netif_msg_link(pegasus)) 1226 pr_debug("%s: set allmulti\n", net->name); 1227 } else { 1228 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; 1229 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1230 } 1231 1232 pegasus->ctrl_urb->status = 0; 1233 1234 pegasus->flags |= ETH_REGS_CHANGE; 1235 ctrl_callback(pegasus->ctrl_urb); 1236 } 1237 1238 static __u8 mii_phy_probe(pegasus_t * pegasus) 1239 { 1240 int i; 1241 __u16 tmp; 1242 1243 for (i = 0; i < 32; i++) { 1244 read_mii_word(pegasus, i, MII_BMSR, &tmp); 1245 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) 1246 continue; 1247 else 1248 return i; 1249 } 1250 1251 return 0xff; 1252 } 1253 1254 static inline void setup_pegasus_II(pegasus_t * pegasus) 1255 { 1256 __u8 data = 0xa5; 1257 1258 set_register(pegasus, Reg1d, 0); 1259 set_register(pegasus, Reg7b, 1); 1260 mdelay(100); 1261 if ((pegasus->features & HAS_HOME_PNA) && mii_mode) 1262 set_register(pegasus, Reg7b, 0); 1263 else 1264 set_register(pegasus, Reg7b, 2); 1265 1266 set_register(pegasus, 0x83, data); 1267 get_registers(pegasus, 0x83, 1, &data); 1268 1269 if (data == 0xa5) { 1270 pegasus->chip = 0x8513; 1271 } else { 1272 pegasus->chip = 0; 1273 } 1274 1275 set_register(pegasus, 0x80, 0xc0); 1276 set_register(pegasus, 0x83, 0xff); 1277 set_register(pegasus, 0x84, 0x01); 1278 1279 if (pegasus->features & HAS_HOME_PNA && mii_mode) 1280 set_register(pegasus, Reg81, 6); 1281 else 1282 set_register(pegasus, Reg81, 2); 1283 } 1284 1285 1286 static int pegasus_count; 1287 static struct workqueue_struct *pegasus_workqueue = NULL; 1288 #define CARRIER_CHECK_DELAY (2 * HZ) 1289 1290 static void check_carrier(struct work_struct *work) 1291 { 1292 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work); 1293 set_carrier(pegasus->net); 1294 if (!(pegasus->flags & PEGASUS_UNPLUG)) { 1295 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1296 CARRIER_CHECK_DELAY); 1297 } 1298 } 1299 1300 static int pegasus_blacklisted(struct usb_device *udev) 1301 { 1302 struct usb_device_descriptor *udd = &udev->descriptor; 1303 1304 /* Special quirk to keep the driver from handling the Belkin Bluetooth 1305 * dongle which happens to have the same ID. 1306 */ 1307 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) && 1308 (udd->idProduct == cpu_to_le16(0x0121)) && 1309 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) && 1310 (udd->bDeviceProtocol == 1)) 1311 return 1; 1312 1313 return 0; 1314 } 1315 1316 /* we rely on probe() and remove() being serialized so we 1317 * don't need extra locking on pegasus_count. 1318 */ 1319 static void pegasus_dec_workqueue(void) 1320 { 1321 pegasus_count--; 1322 if (pegasus_count == 0) { 1323 destroy_workqueue(pegasus_workqueue); 1324 pegasus_workqueue = NULL; 1325 } 1326 } 1327 1328 static int pegasus_probe(struct usb_interface *intf, 1329 const struct usb_device_id *id) 1330 { 1331 struct usb_device *dev = interface_to_usbdev(intf); 1332 struct net_device *net; 1333 pegasus_t *pegasus; 1334 int dev_index = id - pegasus_ids; 1335 int res = -ENOMEM; 1336 1337 if (pegasus_blacklisted(dev)) 1338 return -ENODEV; 1339 1340 if (pegasus_count == 0) { 1341 pegasus_workqueue = create_singlethread_workqueue("pegasus"); 1342 if (!pegasus_workqueue) 1343 return -ENOMEM; 1344 } 1345 pegasus_count++; 1346 1347 usb_get_dev(dev); 1348 1349 net = alloc_etherdev(sizeof(struct pegasus)); 1350 if (!net) { 1351 dev_err(&intf->dev, "can't allocate %s\n", "device"); 1352 goto out; 1353 } 1354 1355 pegasus = netdev_priv(net); 1356 pegasus->dev_index = dev_index; 1357 init_waitqueue_head(&pegasus->ctrl_wait); 1358 1359 if (!alloc_urbs(pegasus)) { 1360 dev_err(&intf->dev, "can't allocate %s\n", "urbs"); 1361 goto out1; 1362 } 1363 1364 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus); 1365 1366 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier); 1367 1368 pegasus->intf = intf; 1369 pegasus->usb = dev; 1370 pegasus->net = net; 1371 1372 1373 net->watchdog_timeo = PEGASUS_TX_TIMEOUT; 1374 net->netdev_ops = &pegasus_netdev_ops; 1375 SET_ETHTOOL_OPS(net, &ops); 1376 pegasus->mii.dev = net; 1377 pegasus->mii.mdio_read = mdio_read; 1378 pegasus->mii.mdio_write = mdio_write; 1379 pegasus->mii.phy_id_mask = 0x1f; 1380 pegasus->mii.reg_num_mask = 0x1f; 1381 spin_lock_init(&pegasus->rx_pool_lock); 1382 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV 1383 | NETIF_MSG_PROBE | NETIF_MSG_LINK); 1384 1385 pegasus->features = usb_dev_id[dev_index].private; 1386 get_interrupt_interval(pegasus); 1387 if (reset_mac(pegasus)) { 1388 dev_err(&intf->dev, "can't reset MAC\n"); 1389 res = -EIO; 1390 goto out2; 1391 } 1392 set_ethernet_addr(pegasus); 1393 fill_skb_pool(pegasus); 1394 if (pegasus->features & PEGASUS_II) { 1395 dev_info(&intf->dev, "setup Pegasus II specific registers\n"); 1396 setup_pegasus_II(pegasus); 1397 } 1398 pegasus->phy = mii_phy_probe(pegasus); 1399 if (pegasus->phy == 0xff) { 1400 dev_warn(&intf->dev, "can't locate MII phy, using default\n"); 1401 pegasus->phy = 1; 1402 } 1403 pegasus->mii.phy_id = pegasus->phy; 1404 usb_set_intfdata(intf, pegasus); 1405 SET_NETDEV_DEV(net, &intf->dev); 1406 pegasus_reset_wol(net); 1407 res = register_netdev(net); 1408 if (res) 1409 goto out3; 1410 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1411 CARRIER_CHECK_DELAY); 1412 1413 dev_info(&intf->dev, "%s, %s, %pM\n", 1414 net->name, 1415 usb_dev_id[dev_index].name, 1416 net->dev_addr); 1417 return 0; 1418 1419 out3: 1420 usb_set_intfdata(intf, NULL); 1421 free_skb_pool(pegasus); 1422 out2: 1423 free_all_urbs(pegasus); 1424 out1: 1425 free_netdev(net); 1426 out: 1427 usb_put_dev(dev); 1428 pegasus_dec_workqueue(); 1429 return res; 1430 } 1431 1432 static void pegasus_disconnect(struct usb_interface *intf) 1433 { 1434 struct pegasus *pegasus = usb_get_intfdata(intf); 1435 1436 usb_set_intfdata(intf, NULL); 1437 if (!pegasus) { 1438 dev_dbg(&intf->dev, "unregistering non-bound device?\n"); 1439 return; 1440 } 1441 1442 pegasus->flags |= PEGASUS_UNPLUG; 1443 cancel_delayed_work(&pegasus->carrier_check); 1444 unregister_netdev(pegasus->net); 1445 usb_put_dev(interface_to_usbdev(intf)); 1446 unlink_all_urbs(pegasus); 1447 free_all_urbs(pegasus); 1448 free_skb_pool(pegasus); 1449 if (pegasus->rx_skb != NULL) { 1450 dev_kfree_skb(pegasus->rx_skb); 1451 pegasus->rx_skb = NULL; 1452 } 1453 free_netdev(pegasus->net); 1454 pegasus_dec_workqueue(); 1455 } 1456 1457 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message) 1458 { 1459 struct pegasus *pegasus = usb_get_intfdata(intf); 1460 1461 netif_device_detach (pegasus->net); 1462 cancel_delayed_work(&pegasus->carrier_check); 1463 if (netif_running(pegasus->net)) { 1464 usb_kill_urb(pegasus->rx_urb); 1465 usb_kill_urb(pegasus->intr_urb); 1466 } 1467 return 0; 1468 } 1469 1470 static int pegasus_resume (struct usb_interface *intf) 1471 { 1472 struct pegasus *pegasus = usb_get_intfdata(intf); 1473 1474 netif_device_attach (pegasus->net); 1475 if (netif_running(pegasus->net)) { 1476 pegasus->rx_urb->status = 0; 1477 pegasus->rx_urb->actual_length = 0; 1478 read_bulk_callback(pegasus->rx_urb); 1479 1480 pegasus->intr_urb->status = 0; 1481 pegasus->intr_urb->actual_length = 0; 1482 intr_callback(pegasus->intr_urb); 1483 } 1484 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1485 CARRIER_CHECK_DELAY); 1486 return 0; 1487 } 1488 1489 static const struct net_device_ops pegasus_netdev_ops = { 1490 .ndo_open = pegasus_open, 1491 .ndo_stop = pegasus_close, 1492 .ndo_do_ioctl = pegasus_ioctl, 1493 .ndo_start_xmit = pegasus_start_xmit, 1494 .ndo_set_multicast_list = pegasus_set_multicast, 1495 .ndo_get_stats = pegasus_netdev_stats, 1496 .ndo_tx_timeout = pegasus_tx_timeout, 1497 .ndo_change_mtu = eth_change_mtu, 1498 .ndo_set_mac_address = eth_mac_addr, 1499 .ndo_validate_addr = eth_validate_addr, 1500 }; 1501 1502 static struct usb_driver pegasus_driver = { 1503 .name = driver_name, 1504 .probe = pegasus_probe, 1505 .disconnect = pegasus_disconnect, 1506 .id_table = pegasus_ids, 1507 .suspend = pegasus_suspend, 1508 .resume = pegasus_resume, 1509 }; 1510 1511 static void __init parse_id(char *id) 1512 { 1513 unsigned int vendor_id=0, device_id=0, flags=0, i=0; 1514 char *token, *name=NULL; 1515 1516 if ((token = strsep(&id, ":")) != NULL) 1517 name = token; 1518 /* name now points to a null terminated string*/ 1519 if ((token = strsep(&id, ":")) != NULL) 1520 vendor_id = simple_strtoul(token, NULL, 16); 1521 if ((token = strsep(&id, ":")) != NULL) 1522 device_id = simple_strtoul(token, NULL, 16); 1523 flags = simple_strtoul(id, NULL, 16); 1524 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n", 1525 driver_name, name, vendor_id, device_id, flags); 1526 1527 if (vendor_id > 0x10000 || vendor_id == 0) 1528 return; 1529 if (device_id > 0x10000 || device_id == 0) 1530 return; 1531 1532 for (i=0; usb_dev_id[i].name; i++); 1533 usb_dev_id[i].name = name; 1534 usb_dev_id[i].vendor = vendor_id; 1535 usb_dev_id[i].device = device_id; 1536 usb_dev_id[i].private = flags; 1537 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; 1538 pegasus_ids[i].idVendor = vendor_id; 1539 pegasus_ids[i].idProduct = device_id; 1540 } 1541 1542 static int __init pegasus_init(void) 1543 { 1544 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION); 1545 if (devid) 1546 parse_id(devid); 1547 return usb_register(&pegasus_driver); 1548 } 1549 1550 static void __exit pegasus_exit(void) 1551 { 1552 usb_deregister(&pegasus_driver); 1553 } 1554 1555 module_init(pegasus_init); 1556 module_exit(pegasus_exit); 1557