1/* 2 * Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net) 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * version 2 as published by the Free Software Foundation. 7 */ 8 9#include <linux/init.h> 10#include <linux/signal.h> 11#include <linux/slab.h> 12#include <linux/module.h> 13#include <linux/netdevice.h> 14#include <linux/etherdevice.h> 15#include <linux/mii.h> 16#include <linux/ethtool.h> 17#include <linux/usb.h> 18#include <asm/uaccess.h> 19 20/* Version Information */ 21#define DRIVER_VERSION "v0.6.2 (2004/08/27)" 22#define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>" 23#define DRIVER_DESC "rtl8150 based usb-ethernet driver" 24 25#define IDR 0x0120 26#define MAR 0x0126 27#define CR 0x012e 28#define TCR 0x012f 29#define RCR 0x0130 30#define TSR 0x0132 31#define RSR 0x0133 32#define CON0 0x0135 33#define CON1 0x0136 34#define MSR 0x0137 35#define PHYADD 0x0138 36#define PHYDAT 0x0139 37#define PHYCNT 0x013b 38#define GPPC 0x013d 39#define BMCR 0x0140 40#define BMSR 0x0142 41#define ANAR 0x0144 42#define ANLP 0x0146 43#define AER 0x0148 44#define CSCR 0x014C /* This one has the link status */ 45#define CSCR_LINK_STATUS (1 << 3) 46 47#define IDR_EEPROM 0x1202 48 49#define PHY_READ 0 50#define PHY_WRITE 0x20 51#define PHY_GO 0x40 52 53#define MII_TIMEOUT 10 54#define INTBUFSIZE 8 55 56#define RTL8150_REQT_READ 0xc0 57#define RTL8150_REQT_WRITE 0x40 58#define RTL8150_REQ_GET_REGS 0x05 59#define RTL8150_REQ_SET_REGS 0x05 60 61 62/* Transmit status register errors */ 63#define TSR_ECOL (1<<5) 64#define TSR_LCOL (1<<4) 65#define TSR_LOSS_CRS (1<<3) 66#define TSR_JBR (1<<2) 67#define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR) 68/* Receive status register errors */ 69#define RSR_CRC (1<<2) 70#define RSR_FAE (1<<1) 71#define RSR_ERRORS (RSR_CRC | RSR_FAE) 72 73/* Media status register definitions */ 74#define MSR_DUPLEX (1<<4) 75#define MSR_SPEED (1<<3) 76#define MSR_LINK (1<<2) 77 78/* Interrupt pipe data */ 79#define INT_TSR 0x00 80#define INT_RSR 0x01 81#define INT_MSR 0x02 82#define INT_WAKSR 0x03 83#define INT_TXOK_CNT 0x04 84#define INT_RXLOST_CNT 0x05 85#define INT_CRERR_CNT 0x06 86#define INT_COL_CNT 0x07 87 88/* Transmit status register errors */ 89#define TSR_ECOL (1<<5) 90#define TSR_LCOL (1<<4) 91#define TSR_LOSS_CRS (1<<3) 92#define TSR_JBR (1<<2) 93#define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR) 94/* Receive status register errors */ 95#define RSR_CRC (1<<2) 96#define RSR_FAE (1<<1) 97#define RSR_ERRORS (RSR_CRC | RSR_FAE) 98 99/* Media status register definitions */ 100#define MSR_DUPLEX (1<<4) 101#define MSR_SPEED (1<<3) 102#define MSR_LINK (1<<2) 103 104/* Interrupt pipe data */ 105#define INT_TSR 0x00 106#define INT_RSR 0x01 107#define INT_MSR 0x02 108#define INT_WAKSR 0x03 109#define INT_TXOK_CNT 0x04 110#define INT_RXLOST_CNT 0x05 111#define INT_CRERR_CNT 0x06 112#define INT_COL_CNT 0x07 113 114 115#define RTL8150_MTU 1540 116#define RTL8150_TX_TIMEOUT (HZ) 117#define RX_SKB_POOL_SIZE 4 118 119/* rtl8150 flags */ 120#define RTL8150_HW_CRC 0 121#define RX_REG_SET 1 122#define RTL8150_UNPLUG 2 123#define RX_URB_FAIL 3 124 125/* Define these values to match your device */ 126#define VENDOR_ID_REALTEK 0x0bda 127#define VENDOR_ID_MELCO 0x0411 128#define VENDOR_ID_MICRONET 0x3980 129#define VENDOR_ID_LONGSHINE 0x07b8 130#define VENDOR_ID_OQO 0x1557 131#define VENDOR_ID_ZYXEL 0x0586 132 133#define PRODUCT_ID_RTL8150 0x8150 134#define PRODUCT_ID_LUAKTX 0x0012 135#define PRODUCT_ID_LCS8138TX 0x401a 136#define PRODUCT_ID_SP128AR 0x0003 137#define PRODUCT_ID_PRESTIGE 0x401a 138 139#undef EEPROM_WRITE 140 141/* table of devices that work with this driver */ 142static struct usb_device_id rtl8150_table[] = { 143 {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)}, 144 {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)}, 145 {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)}, 146 {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)}, 147 {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)}, 148 {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)}, 149 {} 150}; 151 152MODULE_DEVICE_TABLE(usb, rtl8150_table); 153 154struct rtl8150 { 155 unsigned long flags; 156 struct usb_device *udev; 157 struct tasklet_struct tl; 158 struct net_device_stats stats; 159 struct net_device *netdev; 160 struct urb *rx_urb, *tx_urb, *intr_urb, *ctrl_urb; 161 struct sk_buff *tx_skb, *rx_skb; 162 struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE]; 163 spinlock_t rx_pool_lock; 164 struct usb_ctrlrequest dr; 165 int intr_interval; 166 __le16 rx_creg; 167 u8 *intr_buff; 168 u8 phy; 169}; 170 171typedef struct rtl8150 rtl8150_t; 172 173static void fill_skb_pool(rtl8150_t *); 174static void free_skb_pool(rtl8150_t *); 175static inline struct sk_buff *pull_skb(rtl8150_t *); 176static void rtl8150_disconnect(struct usb_interface *intf); 177static int rtl8150_probe(struct usb_interface *intf, 178 const struct usb_device_id *id); 179static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message); 180static int rtl8150_resume(struct usb_interface *intf); 181 182static const char driver_name [] = "rtl8150"; 183 184static struct usb_driver rtl8150_driver = { 185 .name = driver_name, 186 .probe = rtl8150_probe, 187 .disconnect = rtl8150_disconnect, 188 .id_table = rtl8150_table, 189 .suspend = rtl8150_suspend, 190 .resume = rtl8150_resume 191}; 192 193/* 194** 195** device related part of the code 196** 197*/ 198static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) 199{ 200 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), 201 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ, 202 indx, 0, data, size, 500); 203} 204 205static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) 206{ 207 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), 208 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE, 209 indx, 0, data, size, 500); 210} 211 212static void ctrl_callback(struct urb *urb) 213{ 214 rtl8150_t *dev; 215 216 switch (urb->status) { 217 case 0: 218 break; 219 case -EINPROGRESS: 220 break; 221 case -ENOENT: 222 break; 223 default: 224 warn("ctrl urb status %d", urb->status); 225 } 226 dev = urb->context; 227 clear_bit(RX_REG_SET, &dev->flags); 228} 229 230static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size) 231{ 232 int ret; 233 234 if (test_bit(RX_REG_SET, &dev->flags)) 235 return -EAGAIN; 236 237 dev->dr.bRequestType = RTL8150_REQT_WRITE; 238 dev->dr.bRequest = RTL8150_REQ_SET_REGS; 239 dev->dr.wValue = cpu_to_le16(indx); 240 dev->dr.wIndex = 0; 241 dev->dr.wLength = cpu_to_le16(size); 242 dev->ctrl_urb->transfer_buffer_length = size; 243 usb_fill_control_urb(dev->ctrl_urb, dev->udev, 244 usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr, 245 &dev->rx_creg, size, ctrl_callback, dev); 246 if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC))) { 247 if (ret == -ENODEV) 248 netif_device_detach(dev->netdev); 249 err("control request submission failed: %d", ret); 250 } else 251 set_bit(RX_REG_SET, &dev->flags); 252 253 return ret; 254} 255 256static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg) 257{ 258 int i; 259 u8 data[3], tmp; 260 261 data[0] = phy; 262 data[1] = data[2] = 0; 263 tmp = indx | PHY_READ | PHY_GO; 264 i = 0; 265 266 set_registers(dev, PHYADD, sizeof(data), data); 267 set_registers(dev, PHYCNT, 1, &tmp); 268 do { 269 get_registers(dev, PHYCNT, 1, data); 270 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); 271 272 if (i < MII_TIMEOUT) { 273 get_registers(dev, PHYDAT, 2, data); 274 *reg = data[0] | (data[1] << 8); 275 return 0; 276 } else 277 return 1; 278} 279 280static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg) 281{ 282 int i; 283 u8 data[3], tmp; 284 285 data[0] = phy; 286 data[1] = reg & 0xff; 287 data[2] = (reg >> 8) & 0xff; 288 tmp = indx | PHY_WRITE | PHY_GO; 289 i = 0; 290 291 set_registers(dev, PHYADD, sizeof(data), data); 292 set_registers(dev, PHYCNT, 1, &tmp); 293 do { 294 get_registers(dev, PHYCNT, 1, data); 295 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); 296 297 if (i < MII_TIMEOUT) 298 return 0; 299 else 300 return 1; 301} 302 303static inline void set_ethernet_addr(rtl8150_t * dev) 304{ 305 u8 node_id[6]; 306 307 get_registers(dev, IDR, sizeof(node_id), node_id); 308 memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id)); 309} 310 311static int rtl8150_set_mac_address(struct net_device *netdev, void *p) 312{ 313 struct sockaddr *addr = p; 314 rtl8150_t *dev = netdev_priv(netdev); 315 int i; 316 317 if (netif_running(netdev)) 318 return -EBUSY; 319 320 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 321 dbg("%s: Setting MAC address to ", netdev->name); 322 for (i = 0; i < 5; i++) 323 dbg("%02X:", netdev->dev_addr[i]); 324 dbg("%02X\n", netdev->dev_addr[i]); 325 /* Set the IDR registers. */ 326 set_registers(dev, IDR, sizeof(netdev->dev_addr), netdev->dev_addr); 327#ifdef EEPROM_WRITE 328 { 329 u8 cr; 330 /* Get the CR contents. */ 331 get_registers(dev, CR, 1, &cr); 332 /* Set the WEPROM bit (eeprom write enable). */ 333 cr |= 0x20; 334 set_registers(dev, CR, 1, &cr); 335 /* Write the MAC address into eeprom. Eeprom writes must be word-sized, 336 so we need to split them up. */ 337 for (i = 0; i * 2 < netdev->addr_len; i++) { 338 set_registers(dev, IDR_EEPROM + (i * 2), 2, 339 netdev->dev_addr + (i * 2)); 340 } 341 /* Clear the WEPROM bit (preventing accidental eeprom writes). */ 342 cr &= 0xdf; 343 set_registers(dev, CR, 1, &cr); 344 } 345#endif 346 return 0; 347} 348 349static int rtl8150_reset(rtl8150_t * dev) 350{ 351 u8 data = 0x10; 352 int i = HZ; 353 354 set_registers(dev, CR, 1, &data); 355 do { 356 get_registers(dev, CR, 1, &data); 357 } while ((data & 0x10) && --i); 358 359 return (i > 0) ? 1 : 0; 360} 361 362static int alloc_all_urbs(rtl8150_t * dev) 363{ 364 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 365 if (!dev->rx_urb) 366 return 0; 367 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 368 if (!dev->tx_urb) { 369 usb_free_urb(dev->rx_urb); 370 return 0; 371 } 372 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 373 if (!dev->intr_urb) { 374 usb_free_urb(dev->rx_urb); 375 usb_free_urb(dev->tx_urb); 376 return 0; 377 } 378 dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 379 if (!dev->intr_urb) { 380 usb_free_urb(dev->rx_urb); 381 usb_free_urb(dev->tx_urb); 382 usb_free_urb(dev->intr_urb); 383 return 0; 384 } 385 386 return 1; 387} 388 389static void free_all_urbs(rtl8150_t * dev) 390{ 391 usb_free_urb(dev->rx_urb); 392 usb_free_urb(dev->tx_urb); 393 usb_free_urb(dev->intr_urb); 394 usb_free_urb(dev->ctrl_urb); 395} 396 397static void unlink_all_urbs(rtl8150_t * dev) 398{ 399 usb_kill_urb(dev->rx_urb); 400 usb_kill_urb(dev->tx_urb); 401 usb_kill_urb(dev->intr_urb); 402 usb_kill_urb(dev->ctrl_urb); 403} 404 405static inline struct sk_buff *pull_skb(rtl8150_t *dev) 406{ 407 struct sk_buff *skb; 408 int i; 409 410 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 411 if (dev->rx_skb_pool[i]) { 412 skb = dev->rx_skb_pool[i]; 413 dev->rx_skb_pool[i] = NULL; 414 return skb; 415 } 416 } 417 return NULL; 418} 419 420static void read_bulk_callback(struct urb *urb) 421{ 422 rtl8150_t *dev; 423 unsigned pkt_len, res; 424 struct sk_buff *skb; 425 struct net_device *netdev; 426 u16 rx_stat; 427 int status; 428 429 dev = urb->context; 430 if (!dev) 431 return; 432 if (test_bit(RTL8150_UNPLUG, &dev->flags)) 433 return; 434 netdev = dev->netdev; 435 if (!netif_device_present(netdev)) 436 return; 437 438 switch (urb->status) { 439 case 0: 440 break; 441 case -ENOENT: 442 return; /* the urb is in unlink state */ 443 case -ETIME: 444 warn("may be reset is needed?.."); 445 goto goon; 446 default: 447 warn("Rx status %d", urb->status); 448 goto goon; 449 } 450 451 if (!dev->rx_skb) 452 goto resched; 453 /* protect against short packets (tell me why we got some?!?) */ 454 if (urb->actual_length < 4) 455 goto goon; 456 457 res = urb->actual_length; 458 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4)); 459 pkt_len = res - 4; 460 461 skb_put(dev->rx_skb, pkt_len); 462 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); 463 netif_rx(dev->rx_skb); 464 dev->stats.rx_packets++; 465 dev->stats.rx_bytes += pkt_len; 466 467 spin_lock(&dev->rx_pool_lock); 468 skb = pull_skb(dev); 469 spin_unlock(&dev->rx_pool_lock); 470 if (!skb) 471 goto resched; 472 473 dev->rx_skb = skb; 474goon: 475 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 476 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 477 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 478 if (status == -ENODEV) 479 netif_device_detach(dev->netdev); 480 else if (status) { 481 set_bit(RX_URB_FAIL, &dev->flags); 482 goto resched; 483 } else { 484 clear_bit(RX_URB_FAIL, &dev->flags); 485 } 486 487 return; 488resched: 489 tasklet_schedule(&dev->tl); 490} 491 492static void rx_fixup(unsigned long data) 493{ 494 rtl8150_t *dev; 495 struct sk_buff *skb; 496 int status; 497 498 dev = (rtl8150_t *)data; 499 500 spin_lock_irq(&dev->rx_pool_lock); 501 fill_skb_pool(dev); 502 spin_unlock_irq(&dev->rx_pool_lock); 503 if (test_bit(RX_URB_FAIL, &dev->flags)) 504 if (dev->rx_skb) 505 goto try_again; 506 spin_lock_irq(&dev->rx_pool_lock); 507 skb = pull_skb(dev); 508 spin_unlock_irq(&dev->rx_pool_lock); 509 if (skb == NULL) 510 goto tlsched; 511 dev->rx_skb = skb; 512 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 513 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 514try_again: 515 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 516 if (status == -ENODEV) { 517 netif_device_detach(dev->netdev); 518 } else if (status) { 519 set_bit(RX_URB_FAIL, &dev->flags); 520 goto tlsched; 521 } else { 522 clear_bit(RX_URB_FAIL, &dev->flags); 523 } 524 525 return; 526tlsched: 527 tasklet_schedule(&dev->tl); 528} 529 530static void write_bulk_callback(struct urb *urb) 531{ 532 rtl8150_t *dev; 533 534 dev = urb->context; 535 if (!dev) 536 return; 537 dev_kfree_skb_irq(dev->tx_skb); 538 if (!netif_device_present(dev->netdev)) 539 return; 540 if (urb->status) 541 info("%s: Tx status %d", dev->netdev->name, urb->status); 542 dev->netdev->trans_start = jiffies; 543 netif_wake_queue(dev->netdev); 544} 545 546static void intr_callback(struct urb *urb) 547{ 548 rtl8150_t *dev; 549 __u8 *d; 550 int status; 551 552 dev = urb->context; 553 if (!dev) 554 return; 555 switch (urb->status) { 556 case 0: /* success */ 557 break; 558 case -ECONNRESET: /* unlink */ 559 case -ENOENT: 560 case -ESHUTDOWN: 561 return; 562 /* -EPIPE: should clear the halt */ 563 default: 564 info("%s: intr status %d", dev->netdev->name, urb->status); 565 goto resubmit; 566 } 567 568 d = urb->transfer_buffer; 569 if (d[0] & TSR_ERRORS) { 570 dev->stats.tx_errors++; 571 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) 572 dev->stats.tx_aborted_errors++; 573 if (d[INT_TSR] & TSR_LCOL) 574 dev->stats.tx_window_errors++; 575 if (d[INT_TSR] & TSR_LOSS_CRS) 576 dev->stats.tx_carrier_errors++; 577 } 578 /* Report link status changes to the network stack */ 579 if ((d[INT_MSR] & MSR_LINK) == 0) { 580 if (netif_carrier_ok(dev->netdev)) { 581 netif_carrier_off(dev->netdev); 582 dbg("%s: LINK LOST\n", __func__); 583 } 584 } else { 585 if (!netif_carrier_ok(dev->netdev)) { 586 netif_carrier_on(dev->netdev); 587 dbg("%s: LINK CAME BACK\n", __func__); 588 } 589 } 590 591resubmit: 592 status = usb_submit_urb (urb, GFP_ATOMIC); 593 if (status == -ENODEV) 594 netif_device_detach(dev->netdev); 595 else if (status) 596 err ("can't resubmit intr, %s-%s/input0, status %d", 597 dev->udev->bus->bus_name, 598 dev->udev->devpath, status); 599} 600 601static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) 602{ 603 rtl8150_t *dev = usb_get_intfdata(intf); 604 605 netif_device_detach(dev->netdev); 606 607 if (netif_running(dev->netdev)) { 608 usb_kill_urb(dev->rx_urb); 609 usb_kill_urb(dev->intr_urb); 610 } 611 return 0; 612} 613 614static int rtl8150_resume(struct usb_interface *intf) 615{ 616 rtl8150_t *dev = usb_get_intfdata(intf); 617 618 netif_device_attach(dev->netdev); 619 if (netif_running(dev->netdev)) { 620 dev->rx_urb->status = 0; 621 dev->rx_urb->actual_length = 0; 622 read_bulk_callback(dev->rx_urb); 623 624 dev->intr_urb->status = 0; 625 dev->intr_urb->actual_length = 0; 626 intr_callback(dev->intr_urb); 627 } 628 return 0; 629} 630 631/* 632** 633** network related part of the code 634** 635*/ 636 637static void fill_skb_pool(rtl8150_t *dev) 638{ 639 struct sk_buff *skb; 640 int i; 641 642 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 643 if (dev->rx_skb_pool[i]) 644 continue; 645 skb = dev_alloc_skb(RTL8150_MTU + 2); 646 if (!skb) { 647 return; 648 } 649 skb_reserve(skb, 2); 650 dev->rx_skb_pool[i] = skb; 651 } 652} 653 654static void free_skb_pool(rtl8150_t *dev) 655{ 656 int i; 657 658 for (i = 0; i < RX_SKB_POOL_SIZE; i++) 659 if (dev->rx_skb_pool[i]) 660 dev_kfree_skb(dev->rx_skb_pool[i]); 661} 662 663static int enable_net_traffic(rtl8150_t * dev) 664{ 665 u8 cr, tcr, rcr, msr; 666 667 if (!rtl8150_reset(dev)) { 668 warn("%s - device reset failed", __FUNCTION__); 669 } 670 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ 671 rcr = 0x9e; 672 dev->rx_creg = cpu_to_le16(rcr); 673 tcr = 0xd8; 674 cr = 0x0c; 675 if (!(rcr & 0x80)) 676 set_bit(RTL8150_HW_CRC, &dev->flags); 677 set_registers(dev, RCR, 1, &rcr); 678 set_registers(dev, TCR, 1, &tcr); 679 set_registers(dev, CR, 1, &cr); 680 get_registers(dev, MSR, 1, &msr); 681 682 return 0; 683} 684 685static void disable_net_traffic(rtl8150_t * dev) 686{ 687 u8 cr; 688 689 get_registers(dev, CR, 1, &cr); 690 cr &= 0xf3; 691 set_registers(dev, CR, 1, &cr); 692} 693 694static struct net_device_stats *rtl8150_netdev_stats(struct net_device *dev) 695{ 696 return &((rtl8150_t *)netdev_priv(dev))->stats; 697} 698 699static void rtl8150_tx_timeout(struct net_device *netdev) 700{ 701 rtl8150_t *dev = netdev_priv(netdev); 702 warn("%s: Tx timeout.", netdev->name); 703 usb_unlink_urb(dev->tx_urb); 704 dev->stats.tx_errors++; 705} 706 707static void rtl8150_set_multicast(struct net_device *netdev) 708{ 709 rtl8150_t *dev = netdev_priv(netdev); 710 netif_stop_queue(netdev); 711 if (netdev->flags & IFF_PROMISC) { 712 dev->rx_creg |= cpu_to_le16(0x0001); 713 info("%s: promiscuous mode", netdev->name); 714 } else if (netdev->mc_count || 715 (netdev->flags & IFF_ALLMULTI)) { 716 dev->rx_creg &= cpu_to_le16(0xfffe); 717 dev->rx_creg |= cpu_to_le16(0x0002); 718 info("%s: allmulti set", netdev->name); 719 } else { 720 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ 721 dev->rx_creg &= cpu_to_le16(0x00fc); 722 } 723 async_set_registers(dev, RCR, 2); 724 netif_wake_queue(netdev); 725} 726 727static int rtl8150_start_xmit(struct sk_buff *skb, struct net_device *netdev) 728{ 729 rtl8150_t *dev = netdev_priv(netdev); 730 int count, res; 731 732 netif_stop_queue(netdev); 733 count = (skb->len < 60) ? 60 : skb->len; 734 count = (count & 0x3f) ? count : count + 1; 735 dev->tx_skb = skb; 736 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), 737 skb->data, count, write_bulk_callback, dev); 738 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { 739 /* Can we get/handle EPIPE here? */ 740 if (res == -ENODEV) 741 netif_device_detach(dev->netdev); 742 else { 743 warn("failed tx_urb %d\n", res); 744 dev->stats.tx_errors++; 745 netif_start_queue(netdev); 746 } 747 } else { 748 dev->stats.tx_packets++; 749 dev->stats.tx_bytes += skb->len; 750 netdev->trans_start = jiffies; 751 } 752 753 return 0; 754} 755 756 757static void set_carrier(struct net_device *netdev) 758{ 759 rtl8150_t *dev = netdev_priv(netdev); 760 short tmp; 761 762 get_registers(dev, CSCR, 2, &tmp); 763 if (tmp & CSCR_LINK_STATUS) 764 netif_carrier_on(netdev); 765 else 766 netif_carrier_off(netdev); 767} 768 769static int rtl8150_open(struct net_device *netdev) 770{ 771 rtl8150_t *dev = netdev_priv(netdev); 772 int res; 773 774 if (dev->rx_skb == NULL) 775 dev->rx_skb = pull_skb(dev); 776 if (!dev->rx_skb) 777 return -ENOMEM; 778 779 set_registers(dev, IDR, 6, netdev->dev_addr); 780 781 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 782 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 783 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { 784 if (res == -ENODEV) 785 netif_device_detach(dev->netdev); 786 warn("%s: rx_urb submit failed: %d", __FUNCTION__, res); 787 return res; 788 } 789 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), 790 dev->intr_buff, INTBUFSIZE, intr_callback, 791 dev, dev->intr_interval); 792 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { 793 if (res == -ENODEV) 794 netif_device_detach(dev->netdev); 795 warn("%s: intr_urb submit failed: %d", __FUNCTION__, res); 796 usb_kill_urb(dev->rx_urb); 797 return res; 798 } 799 enable_net_traffic(dev); 800 set_carrier(netdev); 801 netif_start_queue(netdev); 802 803 return res; 804} 805 806static int rtl8150_close(struct net_device *netdev) 807{ 808 rtl8150_t *dev = netdev_priv(netdev); 809 int res = 0; 810 811 netif_stop_queue(netdev); 812 if (!test_bit(RTL8150_UNPLUG, &dev->flags)) 813 disable_net_traffic(dev); 814 unlink_all_urbs(dev); 815 816 return res; 817} 818 819static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) 820{ 821 rtl8150_t *dev = netdev_priv(netdev); 822 823 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN); 824 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN); 825 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info); 826} 827 828static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) 829{ 830 rtl8150_t *dev = netdev_priv(netdev); 831 short lpa, bmcr; 832 833 ecmd->supported = (SUPPORTED_10baseT_Half | 834 SUPPORTED_10baseT_Full | 835 SUPPORTED_100baseT_Half | 836 SUPPORTED_100baseT_Full | 837 SUPPORTED_Autoneg | 838 SUPPORTED_TP | SUPPORTED_MII); 839 ecmd->port = PORT_TP; 840 ecmd->transceiver = XCVR_INTERNAL; 841 ecmd->phy_address = dev->phy; 842 get_registers(dev, BMCR, 2, &bmcr); 843 get_registers(dev, ANLP, 2, &lpa); 844 if (bmcr & BMCR_ANENABLE) { 845 ecmd->autoneg = AUTONEG_ENABLE; 846 ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ? 847 SPEED_100 : SPEED_10; 848 if (ecmd->speed == SPEED_100) 849 ecmd->duplex = (lpa & LPA_100FULL) ? 850 DUPLEX_FULL : DUPLEX_HALF; 851 else 852 ecmd->duplex = (lpa & LPA_10FULL) ? 853 DUPLEX_FULL : DUPLEX_HALF; 854 } else { 855 ecmd->autoneg = AUTONEG_DISABLE; 856 ecmd->speed = (bmcr & BMCR_SPEED100) ? 857 SPEED_100 : SPEED_10; 858 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? 859 DUPLEX_FULL : DUPLEX_HALF; 860 } 861 return 0; 862} 863 864static struct ethtool_ops ops = { 865 .get_drvinfo = rtl8150_get_drvinfo, 866 .get_settings = rtl8150_get_settings, 867 .get_link = ethtool_op_get_link 868}; 869 870static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 871{ 872 rtl8150_t *dev = netdev_priv(netdev); 873 u16 *data = (u16 *) & rq->ifr_ifru; 874 int res = 0; 875 876 switch (cmd) { 877 case SIOCDEVPRIVATE: 878 data[0] = dev->phy; 879 case SIOCDEVPRIVATE + 1: 880 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); 881 break; 882 case SIOCDEVPRIVATE + 2: 883 if (!capable(CAP_NET_ADMIN)) 884 return -EPERM; 885 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); 886 break; 887 default: 888 res = -EOPNOTSUPP; 889 } 890 891 return res; 892} 893 894static int rtl8150_probe(struct usb_interface *intf, 895 const struct usb_device_id *id) 896{ 897 struct usb_device *udev = interface_to_usbdev(intf); 898 rtl8150_t *dev; 899 struct net_device *netdev; 900 901 netdev = alloc_etherdev(sizeof(rtl8150_t)); 902 if (!netdev) { 903 err("Out of memory"); 904 return -ENOMEM; 905 } 906 907 dev = netdev_priv(netdev); 908 memset(dev, 0, sizeof(rtl8150_t)); 909 910 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); 911 if (!dev->intr_buff) { 912 free_netdev(netdev); 913 return -ENOMEM; 914 } 915 916 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); 917 spin_lock_init(&dev->rx_pool_lock); 918 919 dev->udev = udev; 920 dev->netdev = netdev; 921 SET_MODULE_OWNER(netdev); 922 netdev->open = rtl8150_open; 923 netdev->stop = rtl8150_close; 924 netdev->do_ioctl = rtl8150_ioctl; 925 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; 926 netdev->tx_timeout = rtl8150_tx_timeout; 927 netdev->hard_start_xmit = rtl8150_start_xmit; 928 netdev->set_multicast_list = rtl8150_set_multicast; 929 netdev->set_mac_address = rtl8150_set_mac_address; 930 netdev->get_stats = rtl8150_netdev_stats; 931 netdev->mtu = RTL8150_MTU; 932 SET_ETHTOOL_OPS(netdev, &ops); 933 dev->intr_interval = 100; /* 100ms */ 934 935 if (!alloc_all_urbs(dev)) { 936 err("out of memory"); 937 goto out; 938 } 939 if (!rtl8150_reset(dev)) { 940 err("couldn't reset the device"); 941 goto out1; 942 } 943 fill_skb_pool(dev); 944 set_ethernet_addr(dev); 945 946 usb_set_intfdata(intf, dev); 947 SET_NETDEV_DEV(netdev, &intf->dev); 948 if (register_netdev(netdev) != 0) { 949 err("couldn't register the device"); 950 goto out2; 951 } 952 953 info("%s: rtl8150 is detected", netdev->name); 954 955 return 0; 956 957out2: 958 usb_set_intfdata(intf, NULL); 959 free_skb_pool(dev); 960out1: 961 free_all_urbs(dev); 962out: 963 kfree(dev->intr_buff); 964 free_netdev(netdev); 965 return -EIO; 966} 967 968static void rtl8150_disconnect(struct usb_interface *intf) 969{ 970 rtl8150_t *dev = usb_get_intfdata(intf); 971 972 usb_set_intfdata(intf, NULL); 973 if (dev) { 974 set_bit(RTL8150_UNPLUG, &dev->flags); 975 tasklet_disable(&dev->tl); 976 tasklet_kill(&dev->tl); 977 unregister_netdev(dev->netdev); 978 unlink_all_urbs(dev); 979 free_all_urbs(dev); 980 free_skb_pool(dev); 981 if (dev->rx_skb) 982 dev_kfree_skb(dev->rx_skb); 983 kfree(dev->intr_buff); 984 free_netdev(dev->netdev); 985 } 986} 987 988static int __init usb_rtl8150_init(void) 989{ 990 info(DRIVER_DESC " " DRIVER_VERSION); 991 return usb_register(&rtl8150_driver); 992} 993 994static void __exit usb_rtl8150_exit(void) 995{ 996 usb_deregister(&rtl8150_driver); 997} 998 999module_init(usb_rtl8150_init); 1000module_exit(usb_rtl8150_exit); 1001 1002MODULE_AUTHOR(DRIVER_AUTHOR); 1003MODULE_DESCRIPTION(DRIVER_DESC); 1004MODULE_LICENSE("GPL"); 1005