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 (netif_msg_drv(pegasus) && printk_ratelimit()) 136 dev_dbg(&pegasus->intf->dev, "%s, status %d\n", 137 __func__, status); 138 } 139 pegasus->flags &= ~ETH_REGS_CHANGED; 140 wake_up(&pegasus->ctrl_wait); 141 } 142 143 static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size, 144 void *data) 145 { 146 int ret; 147 char *buffer; 148 DECLARE_WAITQUEUE(wait, current); 149 150 buffer = kmalloc(size, GFP_KERNEL); 151 if (!buffer) { 152 if (netif_msg_drv(pegasus)) 153 dev_warn(&pegasus->intf->dev, "out of memory in %s\n", 154 __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 (netif_msg_drv(pegasus) && printk_ratelimit()) 185 dev_err(&pegasus->intf->dev, "%s, status %d\n", 186 __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 = kmalloc(size, GFP_KERNEL); 207 if (!buffer) { 208 if (netif_msg_drv(pegasus)) 209 dev_warn(&pegasus->intf->dev, "out of memory in %s\n", 210 __func__); 211 return -ENOMEM; 212 } 213 memcpy(buffer, data, size); 214 215 add_wait_queue(&pegasus->ctrl_wait, &wait); 216 set_current_state(TASK_UNINTERRUPTIBLE); 217 while (pegasus->flags & ETH_REGS_CHANGED) 218 schedule(); 219 remove_wait_queue(&pegasus->ctrl_wait, &wait); 220 set_current_state(TASK_RUNNING); 221 222 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 223 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; 224 pegasus->dr.wValue = cpu_to_le16(0); 225 pegasus->dr.wIndex = cpu_to_le16(indx); 226 pegasus->dr.wLength = cpu_to_le16(size); 227 pegasus->ctrl_urb->transfer_buffer_length = size; 228 229 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 230 usb_sndctrlpipe(pegasus->usb, 0), 231 (char *) &pegasus->dr, 232 buffer, size, ctrl_callback, pegasus); 233 234 add_wait_queue(&pegasus->ctrl_wait, &wait); 235 set_current_state(TASK_UNINTERRUPTIBLE); 236 237 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 238 if (ret == -ENODEV) 239 netif_device_detach(pegasus->net); 240 if (netif_msg_drv(pegasus)) 241 dev_err(&pegasus->intf->dev, "%s, status %d\n", 242 __func__, ret); 243 goto out; 244 } 245 246 schedule(); 247 out: 248 remove_wait_queue(&pegasus->ctrl_wait, &wait); 249 kfree(buffer); 250 251 return ret; 252 } 253 254 static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data) 255 { 256 int ret; 257 char *tmp; 258 DECLARE_WAITQUEUE(wait, current); 259 260 tmp = kmalloc(1, GFP_KERNEL); 261 if (!tmp) { 262 if (netif_msg_drv(pegasus)) 263 dev_warn(&pegasus->intf->dev, "out of memory in %s\n", 264 __func__); 265 return -ENOMEM; 266 } 267 memcpy(tmp, &data, 1); 268 add_wait_queue(&pegasus->ctrl_wait, &wait); 269 set_current_state(TASK_UNINTERRUPTIBLE); 270 while (pegasus->flags & ETH_REGS_CHANGED) 271 schedule(); 272 remove_wait_queue(&pegasus->ctrl_wait, &wait); 273 set_current_state(TASK_RUNNING); 274 275 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 276 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG; 277 pegasus->dr.wValue = cpu_to_le16(data); 278 pegasus->dr.wIndex = cpu_to_le16(indx); 279 pegasus->dr.wLength = cpu_to_le16(1); 280 pegasus->ctrl_urb->transfer_buffer_length = 1; 281 282 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 283 usb_sndctrlpipe(pegasus->usb, 0), 284 (char *) &pegasus->dr, 285 tmp, 1, ctrl_callback, pegasus); 286 287 add_wait_queue(&pegasus->ctrl_wait, &wait); 288 set_current_state(TASK_UNINTERRUPTIBLE); 289 290 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 291 if (ret == -ENODEV) 292 netif_device_detach(pegasus->net); 293 if (netif_msg_drv(pegasus) && printk_ratelimit()) 294 dev_err(&pegasus->intf->dev, "%s, status %d\n", 295 __func__, ret); 296 goto out; 297 } 298 299 schedule(); 300 out: 301 remove_wait_queue(&pegasus->ctrl_wait, &wait); 302 kfree(tmp); 303 304 return ret; 305 } 306 307 static int update_eth_regs_async(pegasus_t * pegasus) 308 { 309 int ret; 310 311 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; 312 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; 313 pegasus->dr.wValue = cpu_to_le16(0); 314 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0); 315 pegasus->dr.wLength = cpu_to_le16(3); 316 pegasus->ctrl_urb->transfer_buffer_length = 3; 317 318 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, 319 usb_sndctrlpipe(pegasus->usb, 0), 320 (char *) &pegasus->dr, 321 pegasus->eth_regs, 3, ctrl_callback, pegasus); 322 323 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { 324 if (ret == -ENODEV) 325 netif_device_detach(pegasus->net); 326 if (netif_msg_drv(pegasus)) 327 dev_err(&pegasus->intf->dev, "%s, status %d\n", 328 __func__, ret); 329 } 330 331 return ret; 332 } 333 334 /* Returns 0 on success, error on failure */ 335 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd) 336 { 337 int i; 338 __u8 data[4] = { phy, 0, 0, indx }; 339 __le16 regdi; 340 int ret; 341 342 set_register(pegasus, PhyCtrl, 0); 343 set_registers(pegasus, PhyAddr, sizeof (data), data); 344 set_register(pegasus, PhyCtrl, (indx | PHY_READ)); 345 for (i = 0; i < REG_TIMEOUT; i++) { 346 ret = get_registers(pegasus, PhyCtrl, 1, data); 347 if (ret == -ESHUTDOWN) 348 goto fail; 349 if (data[0] & PHY_DONE) 350 break; 351 } 352 if (i < REG_TIMEOUT) { 353 ret = get_registers(pegasus, PhyData, 2, ®di); 354 *regd = le16_to_cpu(regdi); 355 return ret; 356 } 357 fail: 358 if (netif_msg_drv(pegasus)) 359 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__); 360 361 return ret; 362 } 363 364 static int mdio_read(struct net_device *dev, int phy_id, int loc) 365 { 366 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev); 367 u16 res; 368 369 read_mii_word(pegasus, phy_id, loc, &res); 370 return (int)res; 371 } 372 373 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd) 374 { 375 int i; 376 __u8 data[4] = { phy, 0, 0, indx }; 377 int ret; 378 379 data[1] = (u8) regd; 380 data[2] = (u8) (regd >> 8); 381 set_register(pegasus, PhyCtrl, 0); 382 set_registers(pegasus, PhyAddr, sizeof(data), data); 383 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE)); 384 for (i = 0; i < REG_TIMEOUT; i++) { 385 ret = get_registers(pegasus, PhyCtrl, 1, data); 386 if (ret == -ESHUTDOWN) 387 goto fail; 388 if (data[0] & PHY_DONE) 389 break; 390 } 391 if (i < REG_TIMEOUT) 392 return ret; 393 394 fail: 395 if (netif_msg_drv(pegasus)) 396 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__); 397 return -ETIMEDOUT; 398 } 399 400 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val) 401 { 402 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev); 403 404 write_mii_word(pegasus, phy_id, loc, val); 405 } 406 407 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata) 408 { 409 int i; 410 __u8 tmp; 411 __le16 retdatai; 412 int ret; 413 414 set_register(pegasus, EpromCtrl, 0); 415 set_register(pegasus, EpromOffset, index); 416 set_register(pegasus, EpromCtrl, EPROM_READ); 417 418 for (i = 0; i < REG_TIMEOUT; i++) { 419 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 420 if (tmp & EPROM_DONE) 421 break; 422 if (ret == -ESHUTDOWN) 423 goto fail; 424 } 425 if (i < REG_TIMEOUT) { 426 ret = get_registers(pegasus, EpromData, 2, &retdatai); 427 *retdata = le16_to_cpu(retdatai); 428 return ret; 429 } 430 431 fail: 432 if (netif_msg_drv(pegasus)) 433 dev_warn(&pegasus->intf->dev, "%s failed\n", __func__); 434 return -ETIMEDOUT; 435 } 436 437 #ifdef PEGASUS_WRITE_EEPROM 438 static inline void enable_eprom_write(pegasus_t * pegasus) 439 { 440 __u8 tmp; 441 int ret; 442 443 get_registers(pegasus, EthCtrl2, 1, &tmp); 444 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE); 445 } 446 447 static inline void disable_eprom_write(pegasus_t * pegasus) 448 { 449 __u8 tmp; 450 int ret; 451 452 get_registers(pegasus, EthCtrl2, 1, &tmp); 453 set_register(pegasus, EpromCtrl, 0); 454 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE); 455 } 456 457 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data) 458 { 459 int i; 460 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE }; 461 int ret; 462 __le16 le_data = cpu_to_le16(data); 463 464 set_registers(pegasus, EpromOffset, 4, d); 465 enable_eprom_write(pegasus); 466 set_register(pegasus, EpromOffset, index); 467 set_registers(pegasus, EpromData, 2, &le_data); 468 set_register(pegasus, EpromCtrl, EPROM_WRITE); 469 470 for (i = 0; i < REG_TIMEOUT; i++) { 471 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 472 if (ret == -ESHUTDOWN) 473 goto fail; 474 if (tmp & EPROM_DONE) 475 break; 476 } 477 disable_eprom_write(pegasus); 478 if (i < REG_TIMEOUT) 479 return ret; 480 fail: 481 if (netif_msg_drv(pegasus)) 482 dev_warn(&pegasus->intf->dev, "%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 if (netif_msg_rx_err(pegasus)) 646 pr_debug("%s: reset MAC\n", net->name); 647 pegasus->flags &= ~PEGASUS_RX_BUSY; 648 break; 649 case -EPIPE: /* stall, or disconnect from TT */ 650 /* FIXME schedule work to clear the halt */ 651 if (netif_msg_rx_err(pegasus)) 652 printk(KERN_WARNING "%s: no rx stall recovery\n", 653 net->name); 654 return; 655 case -ENOENT: 656 case -ECONNRESET: 657 case -ESHUTDOWN: 658 if (netif_msg_ifdown(pegasus)) 659 pr_debug("%s: rx unlink, %d\n", net->name, status); 660 return; 661 default: 662 if (netif_msg_rx_err(pegasus)) 663 pr_debug("%s: RX status %d\n", net->name, status); 664 goto goon; 665 } 666 667 if (!count || count < 4) 668 goto goon; 669 670 rx_status = buf[count - 2]; 671 if (rx_status & 0x1e) { 672 if (netif_msg_rx_err(pegasus)) 673 pr_debug("%s: RX packet error %x\n", 674 net->name, rx_status); 675 pegasus->stats.rx_errors++; 676 if (rx_status & 0x06) // long or runt 677 pegasus->stats.rx_length_errors++; 678 if (rx_status & 0x08) 679 pegasus->stats.rx_crc_errors++; 680 if (rx_status & 0x10) // extra bits 681 pegasus->stats.rx_frame_errors++; 682 goto goon; 683 } 684 if (pegasus->chip == 0x8513) { 685 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer); 686 pkt_len &= 0x0fff; 687 pegasus->rx_skb->data += 2; 688 } else { 689 pkt_len = buf[count - 3] << 8; 690 pkt_len += buf[count - 4]; 691 pkt_len &= 0xfff; 692 pkt_len -= 8; 693 } 694 695 /* 696 * If the packet is unreasonably long, quietly drop it rather than 697 * kernel panicing by calling skb_put. 698 */ 699 if (pkt_len > PEGASUS_MTU) 700 goto goon; 701 702 /* 703 * at this point we are sure pegasus->rx_skb != NULL 704 * so we go ahead and pass up the packet. 705 */ 706 skb_put(pegasus->rx_skb, pkt_len); 707 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net); 708 netif_rx(pegasus->rx_skb); 709 pegasus->stats.rx_packets++; 710 pegasus->stats.rx_bytes += pkt_len; 711 712 if (pegasus->flags & PEGASUS_UNPLUG) 713 return; 714 715 spin_lock(&pegasus->rx_pool_lock); 716 pegasus->rx_skb = pull_skb(pegasus); 717 spin_unlock(&pegasus->rx_pool_lock); 718 719 if (pegasus->rx_skb == NULL) 720 goto tl_sched; 721 goon: 722 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 723 usb_rcvbulkpipe(pegasus->usb, 1), 724 pegasus->rx_skb->data, PEGASUS_MTU + 8, 725 read_bulk_callback, pegasus); 726 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 727 if (rx_status == -ENODEV) 728 netif_device_detach(pegasus->net); 729 else if (rx_status) { 730 pegasus->flags |= PEGASUS_RX_URB_FAIL; 731 goto tl_sched; 732 } else { 733 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 734 } 735 736 return; 737 738 tl_sched: 739 tasklet_schedule(&pegasus->rx_tl); 740 } 741 742 static void rx_fixup(unsigned long data) 743 { 744 pegasus_t *pegasus; 745 unsigned long flags; 746 int status; 747 748 pegasus = (pegasus_t *) data; 749 if (pegasus->flags & PEGASUS_UNPLUG) 750 return; 751 752 spin_lock_irqsave(&pegasus->rx_pool_lock, flags); 753 fill_skb_pool(pegasus); 754 if (pegasus->flags & PEGASUS_RX_URB_FAIL) 755 if (pegasus->rx_skb) 756 goto try_again; 757 if (pegasus->rx_skb == NULL) { 758 pegasus->rx_skb = pull_skb(pegasus); 759 } 760 if (pegasus->rx_skb == NULL) { 761 if (netif_msg_rx_err(pegasus)) 762 printk(KERN_WARNING "%s: low on memory\n", 763 pegasus->net->name); 764 tasklet_schedule(&pegasus->rx_tl); 765 goto done; 766 } 767 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 768 usb_rcvbulkpipe(pegasus->usb, 1), 769 pegasus->rx_skb->data, PEGASUS_MTU + 8, 770 read_bulk_callback, pegasus); 771 try_again: 772 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 773 if (status == -ENODEV) 774 netif_device_detach(pegasus->net); 775 else if (status) { 776 pegasus->flags |= PEGASUS_RX_URB_FAIL; 777 tasklet_schedule(&pegasus->rx_tl); 778 } else { 779 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 780 } 781 done: 782 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags); 783 } 784 785 static void write_bulk_callback(struct urb *urb) 786 { 787 pegasus_t *pegasus = urb->context; 788 struct net_device *net; 789 int status = urb->status; 790 791 if (!pegasus) 792 return; 793 794 net = pegasus->net; 795 796 if (!netif_device_present(net) || !netif_running(net)) 797 return; 798 799 switch (status) { 800 case -EPIPE: 801 /* FIXME schedule_work() to clear the tx halt */ 802 netif_stop_queue(net); 803 if (netif_msg_tx_err(pegasus)) 804 printk(KERN_WARNING "%s: no tx stall recovery\n", 805 net->name); 806 return; 807 case -ENOENT: 808 case -ECONNRESET: 809 case -ESHUTDOWN: 810 if (netif_msg_ifdown(pegasus)) 811 pr_debug("%s: tx unlink, %d\n", net->name, status); 812 return; 813 default: 814 if (netif_msg_tx_err(pegasus)) 815 pr_info("%s: TX status %d\n", net->name, status); 816 /* FALL THROUGH */ 817 case 0: 818 break; 819 } 820 821 net->trans_start = jiffies; 822 netif_wake_queue(net); 823 } 824 825 static void intr_callback(struct urb *urb) 826 { 827 pegasus_t *pegasus = urb->context; 828 struct net_device *net; 829 int res, status = urb->status; 830 831 if (!pegasus) 832 return; 833 net = pegasus->net; 834 835 switch (status) { 836 case 0: 837 break; 838 case -ECONNRESET: /* unlink */ 839 case -ENOENT: 840 case -ESHUTDOWN: 841 return; 842 default: 843 /* some Pegasus-I products report LOTS of data 844 * toggle errors... avoid log spamming 845 */ 846 if (netif_msg_timer(pegasus)) 847 pr_debug("%s: intr status %d\n", net->name, 848 status); 849 } 850 851 if (urb->actual_length >= 6) { 852 u8 * d = urb->transfer_buffer; 853 854 /* byte 0 == tx_status1, reg 2B */ 855 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL 856 |LATE_COL|JABBER_TIMEOUT)) { 857 pegasus->stats.tx_errors++; 858 if (d[0] & TX_UNDERRUN) 859 pegasus->stats.tx_fifo_errors++; 860 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT)) 861 pegasus->stats.tx_aborted_errors++; 862 if (d[0] & LATE_COL) 863 pegasus->stats.tx_window_errors++; 864 } 865 866 /* d[5].LINK_STATUS lies on some adapters. 867 * d[0].NO_CARRIER kicks in only with failed TX. 868 * ... so monitoring with MII may be safest. 869 */ 870 871 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */ 872 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4]; 873 } 874 875 res = usb_submit_urb(urb, GFP_ATOMIC); 876 if (res == -ENODEV) 877 netif_device_detach(pegasus->net); 878 if (res && netif_msg_timer(pegasus)) 879 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n", 880 net->name, res); 881 } 882 883 static void pegasus_tx_timeout(struct net_device *net) 884 { 885 pegasus_t *pegasus = netdev_priv(net); 886 if (netif_msg_timer(pegasus)) 887 printk(KERN_WARNING "%s: tx timeout\n", net->name); 888 usb_unlink_urb(pegasus->tx_urb); 889 pegasus->stats.tx_errors++; 890 } 891 892 static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb, 893 struct net_device *net) 894 { 895 pegasus_t *pegasus = netdev_priv(net); 896 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3; 897 int res; 898 __u16 l16 = skb->len; 899 900 netif_stop_queue(net); 901 902 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16); 903 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len); 904 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb, 905 usb_sndbulkpipe(pegasus->usb, 2), 906 pegasus->tx_buff, count, 907 write_bulk_callback, pegasus); 908 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) { 909 if (netif_msg_tx_err(pegasus)) 910 printk(KERN_WARNING "%s: fail tx, %d\n", 911 net->name, res); 912 switch (res) { 913 case -EPIPE: /* stall, or disconnect from TT */ 914 /* cleanup should already have been scheduled */ 915 break; 916 case -ENODEV: /* disconnect() upcoming */ 917 case -EPERM: 918 netif_device_detach(pegasus->net); 919 break; 920 default: 921 pegasus->stats.tx_errors++; 922 netif_start_queue(net); 923 } 924 } else { 925 pegasus->stats.tx_packets++; 926 pegasus->stats.tx_bytes += skb->len; 927 net->trans_start = jiffies; 928 } 929 dev_kfree_skb(skb); 930 931 return NETDEV_TX_OK; 932 } 933 934 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev) 935 { 936 return &((pegasus_t *) netdev_priv(dev))->stats; 937 } 938 939 static inline void disable_net_traffic(pegasus_t * pegasus) 940 { 941 __le16 tmp = cpu_to_le16(0); 942 943 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp); 944 } 945 946 static inline void get_interrupt_interval(pegasus_t * pegasus) 947 { 948 u16 data; 949 u8 interval; 950 951 read_eprom_word(pegasus, 4, &data); 952 interval = data >> 8; 953 if (pegasus->usb->speed != USB_SPEED_HIGH) { 954 if (interval < 0x80) { 955 if (netif_msg_timer(pegasus)) 956 dev_info(&pegasus->intf->dev, "intr interval " 957 "changed from %ums to %ums\n", 958 interval, 0x80); 959 interval = 0x80; 960 data = (data & 0x00FF) | ((u16)interval << 8); 961 #ifdef PEGASUS_WRITE_EEPROM 962 write_eprom_word(pegasus, 4, data); 963 #endif 964 } 965 } 966 pegasus->intr_interval = interval; 967 } 968 969 static void set_carrier(struct net_device *net) 970 { 971 pegasus_t *pegasus = netdev_priv(net); 972 u16 tmp; 973 974 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp)) 975 return; 976 977 if (tmp & BMSR_LSTATUS) 978 netif_carrier_on(net); 979 else 980 netif_carrier_off(net); 981 } 982 983 static void free_all_urbs(pegasus_t * pegasus) 984 { 985 usb_free_urb(pegasus->intr_urb); 986 usb_free_urb(pegasus->tx_urb); 987 usb_free_urb(pegasus->rx_urb); 988 usb_free_urb(pegasus->ctrl_urb); 989 } 990 991 static void unlink_all_urbs(pegasus_t * pegasus) 992 { 993 usb_kill_urb(pegasus->intr_urb); 994 usb_kill_urb(pegasus->tx_urb); 995 usb_kill_urb(pegasus->rx_urb); 996 usb_kill_urb(pegasus->ctrl_urb); 997 } 998 999 static int alloc_urbs(pegasus_t * pegasus) 1000 { 1001 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 1002 if (!pegasus->ctrl_urb) { 1003 return 0; 1004 } 1005 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 1006 if (!pegasus->rx_urb) { 1007 usb_free_urb(pegasus->ctrl_urb); 1008 return 0; 1009 } 1010 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 1011 if (!pegasus->tx_urb) { 1012 usb_free_urb(pegasus->rx_urb); 1013 usb_free_urb(pegasus->ctrl_urb); 1014 return 0; 1015 } 1016 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 1017 if (!pegasus->intr_urb) { 1018 usb_free_urb(pegasus->tx_urb); 1019 usb_free_urb(pegasus->rx_urb); 1020 usb_free_urb(pegasus->ctrl_urb); 1021 return 0; 1022 } 1023 1024 return 1; 1025 } 1026 1027 static int pegasus_open(struct net_device *net) 1028 { 1029 pegasus_t *pegasus = netdev_priv(net); 1030 int res; 1031 1032 if (pegasus->rx_skb == NULL) 1033 pegasus->rx_skb = pull_skb(pegasus); 1034 /* 1035 ** Note: no point to free the pool. it is empty :-) 1036 */ 1037 if (!pegasus->rx_skb) 1038 return -ENOMEM; 1039 1040 res = set_registers(pegasus, EthID, 6, net->dev_addr); 1041 1042 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 1043 usb_rcvbulkpipe(pegasus->usb, 1), 1044 pegasus->rx_skb->data, PEGASUS_MTU + 8, 1045 read_bulk_callback, pegasus); 1046 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) { 1047 if (res == -ENODEV) 1048 netif_device_detach(pegasus->net); 1049 if (netif_msg_ifup(pegasus)) 1050 pr_debug("%s: failed rx_urb, %d", net->name, res); 1051 goto exit; 1052 } 1053 1054 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb, 1055 usb_rcvintpipe(pegasus->usb, 3), 1056 pegasus->intr_buff, sizeof (pegasus->intr_buff), 1057 intr_callback, pegasus, pegasus->intr_interval); 1058 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) { 1059 if (res == -ENODEV) 1060 netif_device_detach(pegasus->net); 1061 if (netif_msg_ifup(pegasus)) 1062 pr_debug("%s: failed intr_urb, %d\n", net->name, res); 1063 usb_kill_urb(pegasus->rx_urb); 1064 goto exit; 1065 } 1066 if ((res = enable_net_traffic(net, pegasus->usb))) { 1067 if (netif_msg_ifup(pegasus)) 1068 pr_debug("%s: can't enable_net_traffic() - %d\n", 1069 net->name, res); 1070 res = -EIO; 1071 usb_kill_urb(pegasus->rx_urb); 1072 usb_kill_urb(pegasus->intr_urb); 1073 free_skb_pool(pegasus); 1074 goto exit; 1075 } 1076 set_carrier(net); 1077 netif_start_queue(net); 1078 if (netif_msg_ifup(pegasus)) 1079 pr_debug("%s: open\n", net->name); 1080 res = 0; 1081 exit: 1082 return res; 1083 } 1084 1085 static int pegasus_close(struct net_device *net) 1086 { 1087 pegasus_t *pegasus = netdev_priv(net); 1088 1089 netif_stop_queue(net); 1090 if (!(pegasus->flags & PEGASUS_UNPLUG)) 1091 disable_net_traffic(pegasus); 1092 tasklet_kill(&pegasus->rx_tl); 1093 unlink_all_urbs(pegasus); 1094 1095 return 0; 1096 } 1097 1098 static void pegasus_get_drvinfo(struct net_device *dev, 1099 struct ethtool_drvinfo *info) 1100 { 1101 pegasus_t *pegasus = netdev_priv(dev); 1102 strncpy(info->driver, driver_name, sizeof (info->driver) - 1); 1103 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1); 1104 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info)); 1105 } 1106 1107 /* also handles three patterns of some kind in hardware */ 1108 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) 1109 1110 static void 1111 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1112 { 1113 pegasus_t *pegasus = netdev_priv(dev); 1114 1115 wol->supported = WAKE_MAGIC | WAKE_PHY; 1116 wol->wolopts = pegasus->wolopts; 1117 } 1118 1119 static int 1120 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 1121 { 1122 pegasus_t *pegasus = netdev_priv(dev); 1123 u8 reg78 = 0x04; 1124 1125 if (wol->wolopts & ~WOL_SUPPORTED) 1126 return -EINVAL; 1127 1128 if (wol->wolopts & WAKE_MAGIC) 1129 reg78 |= 0x80; 1130 if (wol->wolopts & WAKE_PHY) 1131 reg78 |= 0x40; 1132 /* FIXME this 0x10 bit still needs to get set in the chip... */ 1133 if (wol->wolopts) 1134 pegasus->eth_regs[0] |= 0x10; 1135 else 1136 pegasus->eth_regs[0] &= ~0x10; 1137 pegasus->wolopts = wol->wolopts; 1138 return set_register(pegasus, WakeupControl, reg78); 1139 } 1140 1141 static inline void pegasus_reset_wol(struct net_device *dev) 1142 { 1143 struct ethtool_wolinfo wol; 1144 1145 memset(&wol, 0, sizeof wol); 1146 (void) pegasus_set_wol(dev, &wol); 1147 } 1148 1149 static int 1150 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1151 { 1152 pegasus_t *pegasus; 1153 1154 pegasus = netdev_priv(dev); 1155 mii_ethtool_gset(&pegasus->mii, ecmd); 1156 return 0; 1157 } 1158 1159 static int 1160 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) 1161 { 1162 pegasus_t *pegasus = netdev_priv(dev); 1163 return mii_ethtool_sset(&pegasus->mii, ecmd); 1164 } 1165 1166 static int pegasus_nway_reset(struct net_device *dev) 1167 { 1168 pegasus_t *pegasus = netdev_priv(dev); 1169 return mii_nway_restart(&pegasus->mii); 1170 } 1171 1172 static u32 pegasus_get_link(struct net_device *dev) 1173 { 1174 pegasus_t *pegasus = netdev_priv(dev); 1175 return mii_link_ok(&pegasus->mii); 1176 } 1177 1178 static u32 pegasus_get_msglevel(struct net_device *dev) 1179 { 1180 pegasus_t *pegasus = netdev_priv(dev); 1181 return pegasus->msg_enable; 1182 } 1183 1184 static void pegasus_set_msglevel(struct net_device *dev, u32 v) 1185 { 1186 pegasus_t *pegasus = netdev_priv(dev); 1187 pegasus->msg_enable = v; 1188 } 1189 1190 static const struct ethtool_ops ops = { 1191 .get_drvinfo = pegasus_get_drvinfo, 1192 .get_settings = pegasus_get_settings, 1193 .set_settings = pegasus_set_settings, 1194 .nway_reset = pegasus_nway_reset, 1195 .get_link = pegasus_get_link, 1196 .get_msglevel = pegasus_get_msglevel, 1197 .set_msglevel = pegasus_set_msglevel, 1198 .get_wol = pegasus_get_wol, 1199 .set_wol = pegasus_set_wol, 1200 }; 1201 1202 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd) 1203 { 1204 __u16 *data = (__u16 *) & rq->ifr_ifru; 1205 pegasus_t *pegasus = netdev_priv(net); 1206 int res; 1207 1208 switch (cmd) { 1209 case SIOCDEVPRIVATE: 1210 data[0] = pegasus->phy; 1211 case SIOCDEVPRIVATE + 1: 1212 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]); 1213 res = 0; 1214 break; 1215 case SIOCDEVPRIVATE + 2: 1216 if (!capable(CAP_NET_ADMIN)) 1217 return -EPERM; 1218 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]); 1219 res = 0; 1220 break; 1221 default: 1222 res = -EOPNOTSUPP; 1223 } 1224 return res; 1225 } 1226 1227 static void pegasus_set_multicast(struct net_device *net) 1228 { 1229 pegasus_t *pegasus = netdev_priv(net); 1230 1231 if (net->flags & IFF_PROMISC) { 1232 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; 1233 if (netif_msg_link(pegasus)) 1234 pr_info("%s: Promiscuous mode enabled.\n", net->name); 1235 } else if (net->mc_count || (net->flags & IFF_ALLMULTI)) { 1236 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; 1237 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1238 if (netif_msg_link(pegasus)) 1239 pr_debug("%s: set allmulti\n", net->name); 1240 } else { 1241 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; 1242 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1243 } 1244 1245 pegasus->ctrl_urb->status = 0; 1246 1247 pegasus->flags |= ETH_REGS_CHANGE; 1248 ctrl_callback(pegasus->ctrl_urb); 1249 } 1250 1251 static __u8 mii_phy_probe(pegasus_t * pegasus) 1252 { 1253 int i; 1254 __u16 tmp; 1255 1256 for (i = 0; i < 32; i++) { 1257 read_mii_word(pegasus, i, MII_BMSR, &tmp); 1258 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) 1259 continue; 1260 else 1261 return i; 1262 } 1263 1264 return 0xff; 1265 } 1266 1267 static inline void setup_pegasus_II(pegasus_t * pegasus) 1268 { 1269 __u8 data = 0xa5; 1270 1271 set_register(pegasus, Reg1d, 0); 1272 set_register(pegasus, Reg7b, 1); 1273 mdelay(100); 1274 if ((pegasus->features & HAS_HOME_PNA) && mii_mode) 1275 set_register(pegasus, Reg7b, 0); 1276 else 1277 set_register(pegasus, Reg7b, 2); 1278 1279 set_register(pegasus, 0x83, data); 1280 get_registers(pegasus, 0x83, 1, &data); 1281 1282 if (data == 0xa5) { 1283 pegasus->chip = 0x8513; 1284 } else { 1285 pegasus->chip = 0; 1286 } 1287 1288 set_register(pegasus, 0x80, 0xc0); 1289 set_register(pegasus, 0x83, 0xff); 1290 set_register(pegasus, 0x84, 0x01); 1291 1292 if (pegasus->features & HAS_HOME_PNA && mii_mode) 1293 set_register(pegasus, Reg81, 6); 1294 else 1295 set_register(pegasus, Reg81, 2); 1296 } 1297 1298 1299 static int pegasus_count; 1300 static struct workqueue_struct *pegasus_workqueue = NULL; 1301 #define CARRIER_CHECK_DELAY (2 * HZ) 1302 1303 static void check_carrier(struct work_struct *work) 1304 { 1305 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work); 1306 set_carrier(pegasus->net); 1307 if (!(pegasus->flags & PEGASUS_UNPLUG)) { 1308 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1309 CARRIER_CHECK_DELAY); 1310 } 1311 } 1312 1313 static int pegasus_blacklisted(struct usb_device *udev) 1314 { 1315 struct usb_device_descriptor *udd = &udev->descriptor; 1316 1317 /* Special quirk to keep the driver from handling the Belkin Bluetooth 1318 * dongle which happens to have the same ID. 1319 */ 1320 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) && 1321 (udd->idProduct == cpu_to_le16(0x0121)) && 1322 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) && 1323 (udd->bDeviceProtocol == 1)) 1324 return 1; 1325 1326 return 0; 1327 } 1328 1329 /* we rely on probe() and remove() being serialized so we 1330 * don't need extra locking on pegasus_count. 1331 */ 1332 static void pegasus_dec_workqueue(void) 1333 { 1334 pegasus_count--; 1335 if (pegasus_count == 0) { 1336 destroy_workqueue(pegasus_workqueue); 1337 pegasus_workqueue = NULL; 1338 } 1339 } 1340 1341 static int pegasus_probe(struct usb_interface *intf, 1342 const struct usb_device_id *id) 1343 { 1344 struct usb_device *dev = interface_to_usbdev(intf); 1345 struct net_device *net; 1346 pegasus_t *pegasus; 1347 int dev_index = id - pegasus_ids; 1348 int res = -ENOMEM; 1349 1350 if (pegasus_blacklisted(dev)) 1351 return -ENODEV; 1352 1353 if (pegasus_count == 0) { 1354 pegasus_workqueue = create_singlethread_workqueue("pegasus"); 1355 if (!pegasus_workqueue) 1356 return -ENOMEM; 1357 } 1358 pegasus_count++; 1359 1360 usb_get_dev(dev); 1361 1362 net = alloc_etherdev(sizeof(struct pegasus)); 1363 if (!net) { 1364 dev_err(&intf->dev, "can't allocate %s\n", "device"); 1365 goto out; 1366 } 1367 1368 pegasus = netdev_priv(net); 1369 pegasus->dev_index = dev_index; 1370 init_waitqueue_head(&pegasus->ctrl_wait); 1371 1372 if (!alloc_urbs(pegasus)) { 1373 dev_err(&intf->dev, "can't allocate %s\n", "urbs"); 1374 goto out1; 1375 } 1376 1377 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus); 1378 1379 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier); 1380 1381 pegasus->intf = intf; 1382 pegasus->usb = dev; 1383 pegasus->net = net; 1384 1385 1386 net->watchdog_timeo = PEGASUS_TX_TIMEOUT; 1387 net->netdev_ops = &pegasus_netdev_ops; 1388 SET_ETHTOOL_OPS(net, &ops); 1389 pegasus->mii.dev = net; 1390 pegasus->mii.mdio_read = mdio_read; 1391 pegasus->mii.mdio_write = mdio_write; 1392 pegasus->mii.phy_id_mask = 0x1f; 1393 pegasus->mii.reg_num_mask = 0x1f; 1394 spin_lock_init(&pegasus->rx_pool_lock); 1395 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV 1396 | NETIF_MSG_PROBE | NETIF_MSG_LINK); 1397 1398 pegasus->features = usb_dev_id[dev_index].private; 1399 get_interrupt_interval(pegasus); 1400 if (reset_mac(pegasus)) { 1401 dev_err(&intf->dev, "can't reset MAC\n"); 1402 res = -EIO; 1403 goto out2; 1404 } 1405 set_ethernet_addr(pegasus); 1406 fill_skb_pool(pegasus); 1407 if (pegasus->features & PEGASUS_II) { 1408 dev_info(&intf->dev, "setup Pegasus II specific registers\n"); 1409 setup_pegasus_II(pegasus); 1410 } 1411 pegasus->phy = mii_phy_probe(pegasus); 1412 if (pegasus->phy == 0xff) { 1413 dev_warn(&intf->dev, "can't locate MII phy, using default\n"); 1414 pegasus->phy = 1; 1415 } 1416 pegasus->mii.phy_id = pegasus->phy; 1417 usb_set_intfdata(intf, pegasus); 1418 SET_NETDEV_DEV(net, &intf->dev); 1419 pegasus_reset_wol(net); 1420 res = register_netdev(net); 1421 if (res) 1422 goto out3; 1423 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1424 CARRIER_CHECK_DELAY); 1425 1426 dev_info(&intf->dev, "%s, %s, %pM\n", 1427 net->name, 1428 usb_dev_id[dev_index].name, 1429 net->dev_addr); 1430 return 0; 1431 1432 out3: 1433 usb_set_intfdata(intf, NULL); 1434 free_skb_pool(pegasus); 1435 out2: 1436 free_all_urbs(pegasus); 1437 out1: 1438 free_netdev(net); 1439 out: 1440 usb_put_dev(dev); 1441 pegasus_dec_workqueue(); 1442 return res; 1443 } 1444 1445 static void pegasus_disconnect(struct usb_interface *intf) 1446 { 1447 struct pegasus *pegasus = usb_get_intfdata(intf); 1448 1449 usb_set_intfdata(intf, NULL); 1450 if (!pegasus) { 1451 dev_dbg(&intf->dev, "unregistering non-bound device?\n"); 1452 return; 1453 } 1454 1455 pegasus->flags |= PEGASUS_UNPLUG; 1456 cancel_delayed_work(&pegasus->carrier_check); 1457 unregister_netdev(pegasus->net); 1458 usb_put_dev(interface_to_usbdev(intf)); 1459 unlink_all_urbs(pegasus); 1460 free_all_urbs(pegasus); 1461 free_skb_pool(pegasus); 1462 if (pegasus->rx_skb != NULL) { 1463 dev_kfree_skb(pegasus->rx_skb); 1464 pegasus->rx_skb = NULL; 1465 } 1466 free_netdev(pegasus->net); 1467 pegasus_dec_workqueue(); 1468 } 1469 1470 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message) 1471 { 1472 struct pegasus *pegasus = usb_get_intfdata(intf); 1473 1474 netif_device_detach (pegasus->net); 1475 cancel_delayed_work(&pegasus->carrier_check); 1476 if (netif_running(pegasus->net)) { 1477 usb_kill_urb(pegasus->rx_urb); 1478 usb_kill_urb(pegasus->intr_urb); 1479 } 1480 return 0; 1481 } 1482 1483 static int pegasus_resume (struct usb_interface *intf) 1484 { 1485 struct pegasus *pegasus = usb_get_intfdata(intf); 1486 1487 netif_device_attach (pegasus->net); 1488 if (netif_running(pegasus->net)) { 1489 pegasus->rx_urb->status = 0; 1490 pegasus->rx_urb->actual_length = 0; 1491 read_bulk_callback(pegasus->rx_urb); 1492 1493 pegasus->intr_urb->status = 0; 1494 pegasus->intr_urb->actual_length = 0; 1495 intr_callback(pegasus->intr_urb); 1496 } 1497 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, 1498 CARRIER_CHECK_DELAY); 1499 return 0; 1500 } 1501 1502 static const struct net_device_ops pegasus_netdev_ops = { 1503 .ndo_open = pegasus_open, 1504 .ndo_stop = pegasus_close, 1505 .ndo_do_ioctl = pegasus_ioctl, 1506 .ndo_start_xmit = pegasus_start_xmit, 1507 .ndo_set_multicast_list = pegasus_set_multicast, 1508 .ndo_get_stats = pegasus_netdev_stats, 1509 .ndo_tx_timeout = pegasus_tx_timeout, 1510 .ndo_change_mtu = eth_change_mtu, 1511 .ndo_set_mac_address = eth_mac_addr, 1512 .ndo_validate_addr = eth_validate_addr, 1513 }; 1514 1515 static struct usb_driver pegasus_driver = { 1516 .name = driver_name, 1517 .probe = pegasus_probe, 1518 .disconnect = pegasus_disconnect, 1519 .id_table = pegasus_ids, 1520 .suspend = pegasus_suspend, 1521 .resume = pegasus_resume, 1522 }; 1523 1524 static void __init parse_id(char *id) 1525 { 1526 unsigned int vendor_id=0, device_id=0, flags=0, i=0; 1527 char *token, *name=NULL; 1528 1529 if ((token = strsep(&id, ":")) != NULL) 1530 name = token; 1531 /* name now points to a null terminated string*/ 1532 if ((token = strsep(&id, ":")) != NULL) 1533 vendor_id = simple_strtoul(token, NULL, 16); 1534 if ((token = strsep(&id, ":")) != NULL) 1535 device_id = simple_strtoul(token, NULL, 16); 1536 flags = simple_strtoul(id, NULL, 16); 1537 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n", 1538 driver_name, name, vendor_id, device_id, flags); 1539 1540 if (vendor_id > 0x10000 || vendor_id == 0) 1541 return; 1542 if (device_id > 0x10000 || device_id == 0) 1543 return; 1544 1545 for (i=0; usb_dev_id[i].name; i++); 1546 usb_dev_id[i].name = name; 1547 usb_dev_id[i].vendor = vendor_id; 1548 usb_dev_id[i].device = device_id; 1549 usb_dev_id[i].private = flags; 1550 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; 1551 pegasus_ids[i].idVendor = vendor_id; 1552 pegasus_ids[i].idProduct = device_id; 1553 } 1554 1555 static int __init pegasus_init(void) 1556 { 1557 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION); 1558 if (devid) 1559 parse_id(devid); 1560 return usb_register(&pegasus_driver); 1561 } 1562 1563 static void __exit pegasus_exit(void) 1564 { 1565 usb_deregister(&pegasus_driver); 1566 } 1567 1568 module_init(pegasus_init); 1569 module_exit(pegasus_exit); 1570