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 *netdev; 159 struct urb *rx_urb, *tx_urb, *intr_urb, *ctrl_urb; 160 struct sk_buff *tx_skb, *rx_skb; 161 struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE]; 162 spinlock_t rx_pool_lock; 163 struct usb_ctrlrequest dr; 164 int intr_interval; 165 __le16 rx_creg; 166 u8 *intr_buff; 167 u8 phy; 168}; 169 170typedef struct rtl8150 rtl8150_t; 171 172static void fill_skb_pool(rtl8150_t *); 173static void free_skb_pool(rtl8150_t *); 174static inline struct sk_buff *pull_skb(rtl8150_t *); 175static void rtl8150_disconnect(struct usb_interface *intf); 176static int rtl8150_probe(struct usb_interface *intf, 177 const struct usb_device_id *id); 178static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message); 179static int rtl8150_resume(struct usb_interface *intf); 180 181static const char driver_name [] = "rtl8150"; 182 183static struct usb_driver rtl8150_driver = { 184 .name = driver_name, 185 .probe = rtl8150_probe, 186 .disconnect = rtl8150_disconnect, 187 .id_table = rtl8150_table, 188 .suspend = rtl8150_suspend, 189 .resume = rtl8150_resume 190}; 191 192/* 193** 194** device related part of the code 195** 196*/ 197static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) 198{ 199 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), 200 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ, 201 indx, 0, data, size, 500); 202} 203 204static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) 205{ 206 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), 207 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE, 208 indx, 0, data, size, 500); 209} 210 211static void ctrl_callback(struct urb *urb) 212{ 213 rtl8150_t *dev; 214 int status = urb->status; 215 216 switch (status) { 217 case 0: 218 break; 219 case -EINPROGRESS: 220 break; 221 case -ENOENT: 222 break; 223 default: 224 if (printk_ratelimit()) 225 dev_warn(&urb->dev->dev, "ctrl urb status %d\n", status); 226 } 227 dev = urb->context; 228 clear_bit(RX_REG_SET, &dev->flags); 229} 230 231static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size) 232{ 233 int ret; 234 235 if (test_bit(RX_REG_SET, &dev->flags)) 236 return -EAGAIN; 237 238 dev->dr.bRequestType = RTL8150_REQT_WRITE; 239 dev->dr.bRequest = RTL8150_REQ_SET_REGS; 240 dev->dr.wValue = cpu_to_le16(indx); 241 dev->dr.wIndex = 0; 242 dev->dr.wLength = cpu_to_le16(size); 243 dev->ctrl_urb->transfer_buffer_length = size; 244 usb_fill_control_urb(dev->ctrl_urb, dev->udev, 245 usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr, 246 &dev->rx_creg, size, ctrl_callback, dev); 247 if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC))) { 248 if (ret == -ENODEV) 249 netif_device_detach(dev->netdev); 250 err("control request submission failed: %d", ret); 251 } else 252 set_bit(RX_REG_SET, &dev->flags); 253 254 return ret; 255} 256 257static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg) 258{ 259 int i; 260 u8 data[3], tmp; 261 262 data[0] = phy; 263 data[1] = data[2] = 0; 264 tmp = indx | PHY_READ | PHY_GO; 265 i = 0; 266 267 set_registers(dev, PHYADD, sizeof(data), data); 268 set_registers(dev, PHYCNT, 1, &tmp); 269 do { 270 get_registers(dev, PHYCNT, 1, data); 271 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); 272 273 if (i <= MII_TIMEOUT) { 274 get_registers(dev, PHYDAT, 2, data); 275 *reg = data[0] | (data[1] << 8); 276 return 0; 277 } else 278 return 1; 279} 280 281static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg) 282{ 283 int i; 284 u8 data[3], tmp; 285 286 data[0] = phy; 287 data[1] = reg & 0xff; 288 data[2] = (reg >> 8) & 0xff; 289 tmp = indx | PHY_WRITE | PHY_GO; 290 i = 0; 291 292 set_registers(dev, PHYADD, sizeof(data), data); 293 set_registers(dev, PHYCNT, 1, &tmp); 294 do { 295 get_registers(dev, PHYCNT, 1, data); 296 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); 297 298 if (i <= MII_TIMEOUT) 299 return 0; 300 else 301 return 1; 302} 303 304static inline void set_ethernet_addr(rtl8150_t * dev) 305{ 306 u8 node_id[6]; 307 308 get_registers(dev, IDR, sizeof(node_id), node_id); 309 memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id)); 310} 311 312static int rtl8150_set_mac_address(struct net_device *netdev, void *p) 313{ 314 struct sockaddr *addr = p; 315 rtl8150_t *dev = netdev_priv(netdev); 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 %pM\n", netdev->name, netdev->dev_addr); 322 /* Set the IDR registers. */ 323 set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr); 324#ifdef EEPROM_WRITE 325 { 326 int i; 327 u8 cr; 328 /* Get the CR contents. */ 329 get_registers(dev, CR, 1, &cr); 330 /* Set the WEPROM bit (eeprom write enable). */ 331 cr |= 0x20; 332 set_registers(dev, CR, 1, &cr); 333 /* Write the MAC address into eeprom. Eeprom writes must be word-sized, 334 so we need to split them up. */ 335 for (i = 0; i * 2 < netdev->addr_len; i++) { 336 set_registers(dev, IDR_EEPROM + (i * 2), 2, 337 netdev->dev_addr + (i * 2)); 338 } 339 /* Clear the WEPROM bit (preventing accidental eeprom writes). */ 340 cr &= 0xdf; 341 set_registers(dev, CR, 1, &cr); 342 } 343#endif 344 return 0; 345} 346 347static int rtl8150_reset(rtl8150_t * dev) 348{ 349 u8 data = 0x10; 350 int i = HZ; 351 352 set_registers(dev, CR, 1, &data); 353 do { 354 get_registers(dev, CR, 1, &data); 355 } while ((data & 0x10) && --i); 356 357 return (i > 0) ? 1 : 0; 358} 359 360static int alloc_all_urbs(rtl8150_t * dev) 361{ 362 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 363 if (!dev->rx_urb) 364 return 0; 365 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 366 if (!dev->tx_urb) { 367 usb_free_urb(dev->rx_urb); 368 return 0; 369 } 370 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 371 if (!dev->intr_urb) { 372 usb_free_urb(dev->rx_urb); 373 usb_free_urb(dev->tx_urb); 374 return 0; 375 } 376 dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 377 if (!dev->ctrl_urb) { 378 usb_free_urb(dev->rx_urb); 379 usb_free_urb(dev->tx_urb); 380 usb_free_urb(dev->intr_urb); 381 return 0; 382 } 383 384 return 1; 385} 386 387static void free_all_urbs(rtl8150_t * dev) 388{ 389 usb_free_urb(dev->rx_urb); 390 usb_free_urb(dev->tx_urb); 391 usb_free_urb(dev->intr_urb); 392 usb_free_urb(dev->ctrl_urb); 393} 394 395static void unlink_all_urbs(rtl8150_t * dev) 396{ 397 usb_kill_urb(dev->rx_urb); 398 usb_kill_urb(dev->tx_urb); 399 usb_kill_urb(dev->intr_urb); 400 usb_kill_urb(dev->ctrl_urb); 401} 402 403static inline struct sk_buff *pull_skb(rtl8150_t *dev) 404{ 405 struct sk_buff *skb; 406 int i; 407 408 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 409 if (dev->rx_skb_pool[i]) { 410 skb = dev->rx_skb_pool[i]; 411 dev->rx_skb_pool[i] = NULL; 412 return skb; 413 } 414 } 415 return NULL; 416} 417 418static void read_bulk_callback(struct urb *urb) 419{ 420 rtl8150_t *dev; 421 unsigned pkt_len, res; 422 struct sk_buff *skb; 423 struct net_device *netdev; 424 u16 rx_stat; 425 int status = urb->status; 426 int result; 427 428 dev = urb->context; 429 if (!dev) 430 return; 431 if (test_bit(RTL8150_UNPLUG, &dev->flags)) 432 return; 433 netdev = dev->netdev; 434 if (!netif_device_present(netdev)) 435 return; 436 437 switch (status) { 438 case 0: 439 break; 440 case -ENOENT: 441 return; /* the urb is in unlink state */ 442 case -ETIME: 443 if (printk_ratelimit()) 444 dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); 445 goto goon; 446 default: 447 if (printk_ratelimit()) 448 dev_warn(&urb->dev->dev, "Rx status %d\n", status); 449 goto goon; 450 } 451 452 if (!dev->rx_skb) 453 goto resched; 454 /* protect against short packets (tell me why we got some?!?) */ 455 if (urb->actual_length < 4) 456 goto goon; 457 458 res = urb->actual_length; 459 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4)); 460 pkt_len = res - 4; 461 462 skb_put(dev->rx_skb, pkt_len); 463 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); 464 netif_rx(dev->rx_skb); 465 netdev->stats.rx_packets++; 466 netdev->stats.rx_bytes += pkt_len; 467 468 spin_lock(&dev->rx_pool_lock); 469 skb = pull_skb(dev); 470 spin_unlock(&dev->rx_pool_lock); 471 if (!skb) 472 goto resched; 473 474 dev->rx_skb = skb; 475goon: 476 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 477 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 478 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 479 if (result == -ENODEV) 480 netif_device_detach(dev->netdev); 481 else if (result) { 482 set_bit(RX_URB_FAIL, &dev->flags); 483 goto resched; 484 } else { 485 clear_bit(RX_URB_FAIL, &dev->flags); 486 } 487 488 return; 489resched: 490 tasklet_schedule(&dev->tl); 491} 492 493static void rx_fixup(unsigned long data) 494{ 495 rtl8150_t *dev; 496 struct sk_buff *skb; 497 int status; 498 499 dev = (rtl8150_t *)data; 500 501 spin_lock_irq(&dev->rx_pool_lock); 502 fill_skb_pool(dev); 503 spin_unlock_irq(&dev->rx_pool_lock); 504 if (test_bit(RX_URB_FAIL, &dev->flags)) 505 if (dev->rx_skb) 506 goto try_again; 507 spin_lock_irq(&dev->rx_pool_lock); 508 skb = pull_skb(dev); 509 spin_unlock_irq(&dev->rx_pool_lock); 510 if (skb == NULL) 511 goto tlsched; 512 dev->rx_skb = skb; 513 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 514 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 515try_again: 516 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 517 if (status == -ENODEV) { 518 netif_device_detach(dev->netdev); 519 } else if (status) { 520 set_bit(RX_URB_FAIL, &dev->flags); 521 goto tlsched; 522 } else { 523 clear_bit(RX_URB_FAIL, &dev->flags); 524 } 525 526 return; 527tlsched: 528 tasklet_schedule(&dev->tl); 529} 530 531static void write_bulk_callback(struct urb *urb) 532{ 533 rtl8150_t *dev; 534 int status = urb->status; 535 536 dev = urb->context; 537 if (!dev) 538 return; 539 dev_kfree_skb_irq(dev->tx_skb); 540 if (!netif_device_present(dev->netdev)) 541 return; 542 if (status) 543 dev_info(&urb->dev->dev, "%s: Tx status %d\n", 544 dev->netdev->name, status); 545 dev->netdev->trans_start = jiffies; 546 netif_wake_queue(dev->netdev); 547} 548 549static void intr_callback(struct urb *urb) 550{ 551 rtl8150_t *dev; 552 __u8 *d; 553 int status = urb->status; 554 int res; 555 556 dev = urb->context; 557 if (!dev) 558 return; 559 switch (status) { 560 case 0: /* success */ 561 break; 562 case -ECONNRESET: /* unlink */ 563 case -ENOENT: 564 case -ESHUTDOWN: 565 return; 566 /* -EPIPE: should clear the halt */ 567 default: 568 dev_info(&urb->dev->dev, "%s: intr status %d\n", 569 dev->netdev->name, status); 570 goto resubmit; 571 } 572 573 d = urb->transfer_buffer; 574 if (d[0] & TSR_ERRORS) { 575 dev->netdev->stats.tx_errors++; 576 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) 577 dev->netdev->stats.tx_aborted_errors++; 578 if (d[INT_TSR] & TSR_LCOL) 579 dev->netdev->stats.tx_window_errors++; 580 if (d[INT_TSR] & TSR_LOSS_CRS) 581 dev->netdev->stats.tx_carrier_errors++; 582 } 583 /* Report link status changes to the network stack */ 584 if ((d[INT_MSR] & MSR_LINK) == 0) { 585 if (netif_carrier_ok(dev->netdev)) { 586 netif_carrier_off(dev->netdev); 587 dbg("%s: LINK LOST\n", __func__); 588 } 589 } else { 590 if (!netif_carrier_ok(dev->netdev)) { 591 netif_carrier_on(dev->netdev); 592 dbg("%s: LINK CAME BACK\n", __func__); 593 } 594 } 595 596resubmit: 597 res = usb_submit_urb (urb, GFP_ATOMIC); 598 if (res == -ENODEV) 599 netif_device_detach(dev->netdev); 600 else if (res) 601 err ("can't resubmit intr, %s-%s/input0, status %d", 602 dev->udev->bus->bus_name, 603 dev->udev->devpath, res); 604} 605 606static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) 607{ 608 rtl8150_t *dev = usb_get_intfdata(intf); 609 610 netif_device_detach(dev->netdev); 611 612 if (netif_running(dev->netdev)) { 613 usb_kill_urb(dev->rx_urb); 614 usb_kill_urb(dev->intr_urb); 615 } 616 return 0; 617} 618 619static int rtl8150_resume(struct usb_interface *intf) 620{ 621 rtl8150_t *dev = usb_get_intfdata(intf); 622 623 netif_device_attach(dev->netdev); 624 if (netif_running(dev->netdev)) { 625 dev->rx_urb->status = 0; 626 dev->rx_urb->actual_length = 0; 627 read_bulk_callback(dev->rx_urb); 628 629 dev->intr_urb->status = 0; 630 dev->intr_urb->actual_length = 0; 631 intr_callback(dev->intr_urb); 632 } 633 return 0; 634} 635 636/* 637** 638** network related part of the code 639** 640*/ 641 642static void fill_skb_pool(rtl8150_t *dev) 643{ 644 struct sk_buff *skb; 645 int i; 646 647 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 648 if (dev->rx_skb_pool[i]) 649 continue; 650 skb = dev_alloc_skb(RTL8150_MTU + 2); 651 if (!skb) { 652 return; 653 } 654 skb_reserve(skb, 2); 655 dev->rx_skb_pool[i] = skb; 656 } 657} 658 659static void free_skb_pool(rtl8150_t *dev) 660{ 661 int i; 662 663 for (i = 0; i < RX_SKB_POOL_SIZE; i++) 664 if (dev->rx_skb_pool[i]) 665 dev_kfree_skb(dev->rx_skb_pool[i]); 666} 667 668static int enable_net_traffic(rtl8150_t * dev) 669{ 670 u8 cr, tcr, rcr, msr; 671 672 if (!rtl8150_reset(dev)) { 673 dev_warn(&dev->udev->dev, "device reset failed\n"); 674 } 675 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ 676 rcr = 0x9e; 677 dev->rx_creg = cpu_to_le16(rcr); 678 tcr = 0xd8; 679 cr = 0x0c; 680 if (!(rcr & 0x80)) 681 set_bit(RTL8150_HW_CRC, &dev->flags); 682 set_registers(dev, RCR, 1, &rcr); 683 set_registers(dev, TCR, 1, &tcr); 684 set_registers(dev, CR, 1, &cr); 685 get_registers(dev, MSR, 1, &msr); 686 687 return 0; 688} 689 690static void disable_net_traffic(rtl8150_t * dev) 691{ 692 u8 cr; 693 694 get_registers(dev, CR, 1, &cr); 695 cr &= 0xf3; 696 set_registers(dev, CR, 1, &cr); 697} 698 699static void rtl8150_tx_timeout(struct net_device *netdev) 700{ 701 rtl8150_t *dev = netdev_priv(netdev); 702 dev_warn(&netdev->dev, "Tx timeout.\n"); 703 usb_unlink_urb(dev->tx_urb); 704 netdev->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 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); 714 } else if (!netdev_mc_empty(netdev) || 715 (netdev->flags & IFF_ALLMULTI)) { 716 dev->rx_creg &= cpu_to_le16(0xfffe); 717 dev->rx_creg |= cpu_to_le16(0x0002); 718 dev_info(&netdev->dev, "%s: allmulti set\n", 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 netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, 728 struct net_device *netdev) 729{ 730 rtl8150_t *dev = netdev_priv(netdev); 731 int count, res; 732 733 netif_stop_queue(netdev); 734 count = (skb->len < 60) ? 60 : skb->len; 735 count = (count & 0x3f) ? count : count + 1; 736 dev->tx_skb = skb; 737 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), 738 skb->data, count, write_bulk_callback, dev); 739 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { 740 /* Can we get/handle EPIPE here? */ 741 if (res == -ENODEV) 742 netif_device_detach(dev->netdev); 743 else { 744 dev_warn(&netdev->dev, "failed tx_urb %d\n", res); 745 netdev->stats.tx_errors++; 746 netif_start_queue(netdev); 747 } 748 } else { 749 netdev->stats.tx_packets++; 750 netdev->stats.tx_bytes += skb->len; 751 netdev->trans_start = jiffies; 752 } 753 754 return NETDEV_TX_OK; 755} 756 757 758static void set_carrier(struct net_device *netdev) 759{ 760 rtl8150_t *dev = netdev_priv(netdev); 761 short tmp; 762 763 get_registers(dev, CSCR, 2, &tmp); 764 if (tmp & CSCR_LINK_STATUS) 765 netif_carrier_on(netdev); 766 else 767 netif_carrier_off(netdev); 768} 769 770static int rtl8150_open(struct net_device *netdev) 771{ 772 rtl8150_t *dev = netdev_priv(netdev); 773 int res; 774 775 if (dev->rx_skb == NULL) 776 dev->rx_skb = pull_skb(dev); 777 if (!dev->rx_skb) 778 return -ENOMEM; 779 780 set_registers(dev, IDR, 6, netdev->dev_addr); 781 782 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 783 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 784 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { 785 if (res == -ENODEV) 786 netif_device_detach(dev->netdev); 787 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); 788 return res; 789 } 790 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), 791 dev->intr_buff, INTBUFSIZE, intr_callback, 792 dev, dev->intr_interval); 793 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { 794 if (res == -ENODEV) 795 netif_device_detach(dev->netdev); 796 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); 797 usb_kill_urb(dev->rx_urb); 798 return res; 799 } 800 enable_net_traffic(dev); 801 set_carrier(netdev); 802 netif_start_queue(netdev); 803 804 return res; 805} 806 807static int rtl8150_close(struct net_device *netdev) 808{ 809 rtl8150_t *dev = netdev_priv(netdev); 810 int res = 0; 811 812 netif_stop_queue(netdev); 813 if (!test_bit(RTL8150_UNPLUG, &dev->flags)) 814 disable_net_traffic(dev); 815 unlink_all_urbs(dev); 816 817 return res; 818} 819 820static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) 821{ 822 rtl8150_t *dev = netdev_priv(netdev); 823 824 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN); 825 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN); 826 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info); 827} 828 829static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) 830{ 831 rtl8150_t *dev = netdev_priv(netdev); 832 short lpa, bmcr; 833 834 ecmd->supported = (SUPPORTED_10baseT_Half | 835 SUPPORTED_10baseT_Full | 836 SUPPORTED_100baseT_Half | 837 SUPPORTED_100baseT_Full | 838 SUPPORTED_Autoneg | 839 SUPPORTED_TP | SUPPORTED_MII); 840 ecmd->port = PORT_TP; 841 ecmd->transceiver = XCVR_INTERNAL; 842 ecmd->phy_address = dev->phy; 843 get_registers(dev, BMCR, 2, &bmcr); 844 get_registers(dev, ANLP, 2, &lpa); 845 if (bmcr & BMCR_ANENABLE) { 846 ecmd->autoneg = AUTONEG_ENABLE; 847 ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ? 848 SPEED_100 : SPEED_10; 849 if (ecmd->speed == SPEED_100) 850 ecmd->duplex = (lpa & LPA_100FULL) ? 851 DUPLEX_FULL : DUPLEX_HALF; 852 else 853 ecmd->duplex = (lpa & LPA_10FULL) ? 854 DUPLEX_FULL : DUPLEX_HALF; 855 } else { 856 ecmd->autoneg = AUTONEG_DISABLE; 857 ecmd->speed = (bmcr & BMCR_SPEED100) ? 858 SPEED_100 : SPEED_10; 859 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? 860 DUPLEX_FULL : DUPLEX_HALF; 861 } 862 return 0; 863} 864 865static const struct ethtool_ops ops = { 866 .get_drvinfo = rtl8150_get_drvinfo, 867 .get_settings = rtl8150_get_settings, 868 .get_link = ethtool_op_get_link 869}; 870 871static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 872{ 873 rtl8150_t *dev = netdev_priv(netdev); 874 u16 *data = (u16 *) & rq->ifr_ifru; 875 int res = 0; 876 877 switch (cmd) { 878 case SIOCDEVPRIVATE: 879 data[0] = dev->phy; 880 case SIOCDEVPRIVATE + 1: 881 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); 882 break; 883 case SIOCDEVPRIVATE + 2: 884 if (!capable(CAP_NET_ADMIN)) 885 return -EPERM; 886 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); 887 break; 888 default: 889 res = -EOPNOTSUPP; 890 } 891 892 return res; 893} 894 895static const struct net_device_ops rtl8150_netdev_ops = { 896 .ndo_open = rtl8150_open, 897 .ndo_stop = rtl8150_close, 898 .ndo_do_ioctl = rtl8150_ioctl, 899 .ndo_start_xmit = rtl8150_start_xmit, 900 .ndo_tx_timeout = rtl8150_tx_timeout, 901 .ndo_set_multicast_list = rtl8150_set_multicast, 902 .ndo_set_mac_address = rtl8150_set_mac_address, 903 904 .ndo_change_mtu = eth_change_mtu, 905 .ndo_validate_addr = eth_validate_addr, 906}; 907 908static int rtl8150_probe(struct usb_interface *intf, 909 const struct usb_device_id *id) 910{ 911 struct usb_device *udev = interface_to_usbdev(intf); 912 rtl8150_t *dev; 913 struct net_device *netdev; 914 915 netdev = alloc_etherdev(sizeof(rtl8150_t)); 916 if (!netdev) { 917 err("Out of memory"); 918 return -ENOMEM; 919 } 920 921 dev = netdev_priv(netdev); 922 923 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); 924 if (!dev->intr_buff) { 925 free_netdev(netdev); 926 return -ENOMEM; 927 } 928 929 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); 930 spin_lock_init(&dev->rx_pool_lock); 931 932 dev->udev = udev; 933 dev->netdev = netdev; 934 netdev->netdev_ops = &rtl8150_netdev_ops; 935 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; 936 SET_ETHTOOL_OPS(netdev, &ops); 937 dev->intr_interval = 100; /* 100ms */ 938 939 if (!alloc_all_urbs(dev)) { 940 err("out of memory"); 941 goto out; 942 } 943 if (!rtl8150_reset(dev)) { 944 err("couldn't reset the device"); 945 goto out1; 946 } 947 fill_skb_pool(dev); 948 set_ethernet_addr(dev); 949 950 usb_set_intfdata(intf, dev); 951 SET_NETDEV_DEV(netdev, &intf->dev); 952 if (register_netdev(netdev) != 0) { 953 err("couldn't register the device"); 954 goto out2; 955 } 956 957 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); 958 959 return 0; 960 961out2: 962 usb_set_intfdata(intf, NULL); 963 free_skb_pool(dev); 964out1: 965 free_all_urbs(dev); 966out: 967 kfree(dev->intr_buff); 968 free_netdev(netdev); 969 return -EIO; 970} 971 972static void rtl8150_disconnect(struct usb_interface *intf) 973{ 974 rtl8150_t *dev = usb_get_intfdata(intf); 975 976 usb_set_intfdata(intf, NULL); 977 if (dev) { 978 set_bit(RTL8150_UNPLUG, &dev->flags); 979 tasklet_disable(&dev->tl); 980 tasklet_kill(&dev->tl); 981 unregister_netdev(dev->netdev); 982 unlink_all_urbs(dev); 983 free_all_urbs(dev); 984 free_skb_pool(dev); 985 if (dev->rx_skb) 986 dev_kfree_skb(dev->rx_skb); 987 kfree(dev->intr_buff); 988 free_netdev(dev->netdev); 989 } 990} 991 992static int __init usb_rtl8150_init(void) 993{ 994 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 995 DRIVER_DESC "\n"); 996 return usb_register(&rtl8150_driver); 997} 998 999static void __exit usb_rtl8150_exit(void) 1000{ 1001 usb_deregister(&rtl8150_driver); 1002} 1003 1004module_init(usb_rtl8150_init); 1005module_exit(usb_rtl8150_exit); 1006 1007MODULE_AUTHOR(DRIVER_AUTHOR); 1008MODULE_DESCRIPTION(DRIVER_DESC); 1009MODULE_LICENSE("GPL"); 1010