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 */ 142 static 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 }; 151 152 MODULE_DEVICE_TABLE(usb, rtl8150_table); 153 154 struct 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 }; 170 171 typedef struct rtl8150 rtl8150_t; 172 173 static void fill_skb_pool(rtl8150_t *); 174 static void free_skb_pool(rtl8150_t *); 175 static inline struct sk_buff *pull_skb(rtl8150_t *); 176 static void rtl8150_disconnect(struct usb_interface *intf); 177 static int rtl8150_probe(struct usb_interface *intf, 178 const struct usb_device_id *id); 179 static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message); 180 static int rtl8150_resume(struct usb_interface *intf); 181 182 static const char driver_name [] = "rtl8150"; 183 184 static 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 */ 198 static 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 } 204 205 static 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 } 211 212 static void ctrl_callback(struct urb *urb) 213 { 214 rtl8150_t *dev; 215 int status = urb->status; 216 217 switch (status) { 218 case 0: 219 break; 220 case -EINPROGRESS: 221 break; 222 case -ENOENT: 223 break; 224 default: 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 } 230 231 static 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 } 256 257 static 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 } 280 281 static 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 } 303 304 static 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 } 311 312 static 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 int i; 317 318 if (netif_running(netdev)) 319 return -EBUSY; 320 321 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 322 dbg("%s: Setting MAC address to ", netdev->name); 323 for (i = 0; i < 5; i++) 324 dbg("%02X:", netdev->dev_addr[i]); 325 dbg("%02X\n", netdev->dev_addr[i]); 326 /* Set the IDR registers. */ 327 set_registers(dev, IDR, sizeof(netdev->dev_addr), netdev->dev_addr); 328 #ifdef EEPROM_WRITE 329 { 330 u8 cr; 331 /* Get the CR contents. */ 332 get_registers(dev, CR, 1, &cr); 333 /* Set the WEPROM bit (eeprom write enable). */ 334 cr |= 0x20; 335 set_registers(dev, CR, 1, &cr); 336 /* Write the MAC address into eeprom. Eeprom writes must be word-sized, 337 so we need to split them up. */ 338 for (i = 0; i * 2 < netdev->addr_len; i++) { 339 set_registers(dev, IDR_EEPROM + (i * 2), 2, 340 netdev->dev_addr + (i * 2)); 341 } 342 /* Clear the WEPROM bit (preventing accidental eeprom writes). */ 343 cr &= 0xdf; 344 set_registers(dev, CR, 1, &cr); 345 } 346 #endif 347 return 0; 348 } 349 350 static int rtl8150_reset(rtl8150_t * dev) 351 { 352 u8 data = 0x10; 353 int i = HZ; 354 355 set_registers(dev, CR, 1, &data); 356 do { 357 get_registers(dev, CR, 1, &data); 358 } while ((data & 0x10) && --i); 359 360 return (i > 0) ? 1 : 0; 361 } 362 363 static int alloc_all_urbs(rtl8150_t * dev) 364 { 365 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 366 if (!dev->rx_urb) 367 return 0; 368 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 369 if (!dev->tx_urb) { 370 usb_free_urb(dev->rx_urb); 371 return 0; 372 } 373 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 374 if (!dev->intr_urb) { 375 usb_free_urb(dev->rx_urb); 376 usb_free_urb(dev->tx_urb); 377 return 0; 378 } 379 dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 380 if (!dev->ctrl_urb) { 381 usb_free_urb(dev->rx_urb); 382 usb_free_urb(dev->tx_urb); 383 usb_free_urb(dev->intr_urb); 384 return 0; 385 } 386 387 return 1; 388 } 389 390 static void free_all_urbs(rtl8150_t * dev) 391 { 392 usb_free_urb(dev->rx_urb); 393 usb_free_urb(dev->tx_urb); 394 usb_free_urb(dev->intr_urb); 395 usb_free_urb(dev->ctrl_urb); 396 } 397 398 static void unlink_all_urbs(rtl8150_t * dev) 399 { 400 usb_kill_urb(dev->rx_urb); 401 usb_kill_urb(dev->tx_urb); 402 usb_kill_urb(dev->intr_urb); 403 usb_kill_urb(dev->ctrl_urb); 404 } 405 406 static inline struct sk_buff *pull_skb(rtl8150_t *dev) 407 { 408 struct sk_buff *skb; 409 int i; 410 411 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 412 if (dev->rx_skb_pool[i]) { 413 skb = dev->rx_skb_pool[i]; 414 dev->rx_skb_pool[i] = NULL; 415 return skb; 416 } 417 } 418 return NULL; 419 } 420 421 static void read_bulk_callback(struct urb *urb) 422 { 423 rtl8150_t *dev; 424 unsigned pkt_len, res; 425 struct sk_buff *skb; 426 struct net_device *netdev; 427 u16 rx_stat; 428 int status = urb->status; 429 int result; 430 431 dev = urb->context; 432 if (!dev) 433 return; 434 if (test_bit(RTL8150_UNPLUG, &dev->flags)) 435 return; 436 netdev = dev->netdev; 437 if (!netif_device_present(netdev)) 438 return; 439 440 switch (status) { 441 case 0: 442 break; 443 case -ENOENT: 444 return; /* the urb is in unlink state */ 445 case -ETIME: 446 dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); 447 goto goon; 448 default: 449 dev_warn(&urb->dev->dev, "Rx status %d\n", status); 450 goto goon; 451 } 452 453 if (!dev->rx_skb) 454 goto resched; 455 /* protect against short packets (tell me why we got some?!?) */ 456 if (urb->actual_length < 4) 457 goto goon; 458 459 res = urb->actual_length; 460 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4)); 461 pkt_len = res - 4; 462 463 skb_put(dev->rx_skb, pkt_len); 464 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); 465 netif_rx(dev->rx_skb); 466 dev->stats.rx_packets++; 467 dev->stats.rx_bytes += pkt_len; 468 469 spin_lock(&dev->rx_pool_lock); 470 skb = pull_skb(dev); 471 spin_unlock(&dev->rx_pool_lock); 472 if (!skb) 473 goto resched; 474 475 dev->rx_skb = skb; 476 goon: 477 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 478 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 479 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 480 if (result == -ENODEV) 481 netif_device_detach(dev->netdev); 482 else if (result) { 483 set_bit(RX_URB_FAIL, &dev->flags); 484 goto resched; 485 } else { 486 clear_bit(RX_URB_FAIL, &dev->flags); 487 } 488 489 return; 490 resched: 491 tasklet_schedule(&dev->tl); 492 } 493 494 static void rx_fixup(unsigned long data) 495 { 496 rtl8150_t *dev; 497 struct sk_buff *skb; 498 int status; 499 500 dev = (rtl8150_t *)data; 501 502 spin_lock_irq(&dev->rx_pool_lock); 503 fill_skb_pool(dev); 504 spin_unlock_irq(&dev->rx_pool_lock); 505 if (test_bit(RX_URB_FAIL, &dev->flags)) 506 if (dev->rx_skb) 507 goto try_again; 508 spin_lock_irq(&dev->rx_pool_lock); 509 skb = pull_skb(dev); 510 spin_unlock_irq(&dev->rx_pool_lock); 511 if (skb == NULL) 512 goto tlsched; 513 dev->rx_skb = skb; 514 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 515 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 516 try_again: 517 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 518 if (status == -ENODEV) { 519 netif_device_detach(dev->netdev); 520 } else if (status) { 521 set_bit(RX_URB_FAIL, &dev->flags); 522 goto tlsched; 523 } else { 524 clear_bit(RX_URB_FAIL, &dev->flags); 525 } 526 527 return; 528 tlsched: 529 tasklet_schedule(&dev->tl); 530 } 531 532 static void write_bulk_callback(struct urb *urb) 533 { 534 rtl8150_t *dev; 535 int status = urb->status; 536 537 dev = urb->context; 538 if (!dev) 539 return; 540 dev_kfree_skb_irq(dev->tx_skb); 541 if (!netif_device_present(dev->netdev)) 542 return; 543 if (status) 544 dev_info(&urb->dev->dev, "%s: Tx status %d\n", 545 dev->netdev->name, status); 546 dev->netdev->trans_start = jiffies; 547 netif_wake_queue(dev->netdev); 548 } 549 550 static void intr_callback(struct urb *urb) 551 { 552 rtl8150_t *dev; 553 __u8 *d; 554 int status = urb->status; 555 int res; 556 557 dev = urb->context; 558 if (!dev) 559 return; 560 switch (status) { 561 case 0: /* success */ 562 break; 563 case -ECONNRESET: /* unlink */ 564 case -ENOENT: 565 case -ESHUTDOWN: 566 return; 567 /* -EPIPE: should clear the halt */ 568 default: 569 dev_info(&urb->dev->dev, "%s: intr status %d\n", 570 dev->netdev->name, status); 571 goto resubmit; 572 } 573 574 d = urb->transfer_buffer; 575 if (d[0] & TSR_ERRORS) { 576 dev->stats.tx_errors++; 577 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) 578 dev->stats.tx_aborted_errors++; 579 if (d[INT_TSR] & TSR_LCOL) 580 dev->stats.tx_window_errors++; 581 if (d[INT_TSR] & TSR_LOSS_CRS) 582 dev->stats.tx_carrier_errors++; 583 } 584 /* Report link status changes to the network stack */ 585 if ((d[INT_MSR] & MSR_LINK) == 0) { 586 if (netif_carrier_ok(dev->netdev)) { 587 netif_carrier_off(dev->netdev); 588 dbg("%s: LINK LOST\n", __func__); 589 } 590 } else { 591 if (!netif_carrier_ok(dev->netdev)) { 592 netif_carrier_on(dev->netdev); 593 dbg("%s: LINK CAME BACK\n", __func__); 594 } 595 } 596 597 resubmit: 598 res = usb_submit_urb (urb, GFP_ATOMIC); 599 if (res == -ENODEV) 600 netif_device_detach(dev->netdev); 601 else if (res) 602 err ("can't resubmit intr, %s-%s/input0, status %d", 603 dev->udev->bus->bus_name, 604 dev->udev->devpath, res); 605 } 606 607 static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) 608 { 609 rtl8150_t *dev = usb_get_intfdata(intf); 610 611 netif_device_detach(dev->netdev); 612 613 if (netif_running(dev->netdev)) { 614 usb_kill_urb(dev->rx_urb); 615 usb_kill_urb(dev->intr_urb); 616 } 617 return 0; 618 } 619 620 static int rtl8150_resume(struct usb_interface *intf) 621 { 622 rtl8150_t *dev = usb_get_intfdata(intf); 623 624 netif_device_attach(dev->netdev); 625 if (netif_running(dev->netdev)) { 626 dev->rx_urb->status = 0; 627 dev->rx_urb->actual_length = 0; 628 read_bulk_callback(dev->rx_urb); 629 630 dev->intr_urb->status = 0; 631 dev->intr_urb->actual_length = 0; 632 intr_callback(dev->intr_urb); 633 } 634 return 0; 635 } 636 637 /* 638 ** 639 ** network related part of the code 640 ** 641 */ 642 643 static void fill_skb_pool(rtl8150_t *dev) 644 { 645 struct sk_buff *skb; 646 int i; 647 648 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 649 if (dev->rx_skb_pool[i]) 650 continue; 651 skb = dev_alloc_skb(RTL8150_MTU + 2); 652 if (!skb) { 653 return; 654 } 655 skb_reserve(skb, 2); 656 dev->rx_skb_pool[i] = skb; 657 } 658 } 659 660 static void free_skb_pool(rtl8150_t *dev) 661 { 662 int i; 663 664 for (i = 0; i < RX_SKB_POOL_SIZE; i++) 665 if (dev->rx_skb_pool[i]) 666 dev_kfree_skb(dev->rx_skb_pool[i]); 667 } 668 669 static int enable_net_traffic(rtl8150_t * dev) 670 { 671 u8 cr, tcr, rcr, msr; 672 673 if (!rtl8150_reset(dev)) { 674 dev_warn(&dev->udev->dev, "device reset failed\n"); 675 } 676 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ 677 rcr = 0x9e; 678 dev->rx_creg = cpu_to_le16(rcr); 679 tcr = 0xd8; 680 cr = 0x0c; 681 if (!(rcr & 0x80)) 682 set_bit(RTL8150_HW_CRC, &dev->flags); 683 set_registers(dev, RCR, 1, &rcr); 684 set_registers(dev, TCR, 1, &tcr); 685 set_registers(dev, CR, 1, &cr); 686 get_registers(dev, MSR, 1, &msr); 687 688 return 0; 689 } 690 691 static void disable_net_traffic(rtl8150_t * dev) 692 { 693 u8 cr; 694 695 get_registers(dev, CR, 1, &cr); 696 cr &= 0xf3; 697 set_registers(dev, CR, 1, &cr); 698 } 699 700 static struct net_device_stats *rtl8150_netdev_stats(struct net_device *dev) 701 { 702 return &((rtl8150_t *)netdev_priv(dev))->stats; 703 } 704 705 static void rtl8150_tx_timeout(struct net_device *netdev) 706 { 707 rtl8150_t *dev = netdev_priv(netdev); 708 dev_warn(&netdev->dev, "Tx timeout.\n"); 709 usb_unlink_urb(dev->tx_urb); 710 dev->stats.tx_errors++; 711 } 712 713 static void rtl8150_set_multicast(struct net_device *netdev) 714 { 715 rtl8150_t *dev = netdev_priv(netdev); 716 netif_stop_queue(netdev); 717 if (netdev->flags & IFF_PROMISC) { 718 dev->rx_creg |= cpu_to_le16(0x0001); 719 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); 720 } else if (netdev->mc_count || 721 (netdev->flags & IFF_ALLMULTI)) { 722 dev->rx_creg &= cpu_to_le16(0xfffe); 723 dev->rx_creg |= cpu_to_le16(0x0002); 724 dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name); 725 } else { 726 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ 727 dev->rx_creg &= cpu_to_le16(0x00fc); 728 } 729 async_set_registers(dev, RCR, 2); 730 netif_wake_queue(netdev); 731 } 732 733 static int rtl8150_start_xmit(struct sk_buff *skb, struct net_device *netdev) 734 { 735 rtl8150_t *dev = netdev_priv(netdev); 736 int count, res; 737 738 netif_stop_queue(netdev); 739 count = (skb->len < 60) ? 60 : skb->len; 740 count = (count & 0x3f) ? count : count + 1; 741 dev->tx_skb = skb; 742 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), 743 skb->data, count, write_bulk_callback, dev); 744 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { 745 /* Can we get/handle EPIPE here? */ 746 if (res == -ENODEV) 747 netif_device_detach(dev->netdev); 748 else { 749 dev_warn(&netdev->dev, "failed tx_urb %d\n", res); 750 dev->stats.tx_errors++; 751 netif_start_queue(netdev); 752 } 753 } else { 754 dev->stats.tx_packets++; 755 dev->stats.tx_bytes += skb->len; 756 netdev->trans_start = jiffies; 757 } 758 759 return 0; 760 } 761 762 763 static void set_carrier(struct net_device *netdev) 764 { 765 rtl8150_t *dev = netdev_priv(netdev); 766 short tmp; 767 768 get_registers(dev, CSCR, 2, &tmp); 769 if (tmp & CSCR_LINK_STATUS) 770 netif_carrier_on(netdev); 771 else 772 netif_carrier_off(netdev); 773 } 774 775 static int rtl8150_open(struct net_device *netdev) 776 { 777 rtl8150_t *dev = netdev_priv(netdev); 778 int res; 779 780 if (dev->rx_skb == NULL) 781 dev->rx_skb = pull_skb(dev); 782 if (!dev->rx_skb) 783 return -ENOMEM; 784 785 set_registers(dev, IDR, 6, netdev->dev_addr); 786 787 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 788 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 789 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { 790 if (res == -ENODEV) 791 netif_device_detach(dev->netdev); 792 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); 793 return res; 794 } 795 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), 796 dev->intr_buff, INTBUFSIZE, intr_callback, 797 dev, dev->intr_interval); 798 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { 799 if (res == -ENODEV) 800 netif_device_detach(dev->netdev); 801 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); 802 usb_kill_urb(dev->rx_urb); 803 return res; 804 } 805 enable_net_traffic(dev); 806 set_carrier(netdev); 807 netif_start_queue(netdev); 808 809 return res; 810 } 811 812 static int rtl8150_close(struct net_device *netdev) 813 { 814 rtl8150_t *dev = netdev_priv(netdev); 815 int res = 0; 816 817 netif_stop_queue(netdev); 818 if (!test_bit(RTL8150_UNPLUG, &dev->flags)) 819 disable_net_traffic(dev); 820 unlink_all_urbs(dev); 821 822 return res; 823 } 824 825 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) 826 { 827 rtl8150_t *dev = netdev_priv(netdev); 828 829 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN); 830 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN); 831 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info); 832 } 833 834 static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) 835 { 836 rtl8150_t *dev = netdev_priv(netdev); 837 short lpa, bmcr; 838 839 ecmd->supported = (SUPPORTED_10baseT_Half | 840 SUPPORTED_10baseT_Full | 841 SUPPORTED_100baseT_Half | 842 SUPPORTED_100baseT_Full | 843 SUPPORTED_Autoneg | 844 SUPPORTED_TP | SUPPORTED_MII); 845 ecmd->port = PORT_TP; 846 ecmd->transceiver = XCVR_INTERNAL; 847 ecmd->phy_address = dev->phy; 848 get_registers(dev, BMCR, 2, &bmcr); 849 get_registers(dev, ANLP, 2, &lpa); 850 if (bmcr & BMCR_ANENABLE) { 851 ecmd->autoneg = AUTONEG_ENABLE; 852 ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ? 853 SPEED_100 : SPEED_10; 854 if (ecmd->speed == SPEED_100) 855 ecmd->duplex = (lpa & LPA_100FULL) ? 856 DUPLEX_FULL : DUPLEX_HALF; 857 else 858 ecmd->duplex = (lpa & LPA_10FULL) ? 859 DUPLEX_FULL : DUPLEX_HALF; 860 } else { 861 ecmd->autoneg = AUTONEG_DISABLE; 862 ecmd->speed = (bmcr & BMCR_SPEED100) ? 863 SPEED_100 : SPEED_10; 864 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? 865 DUPLEX_FULL : DUPLEX_HALF; 866 } 867 return 0; 868 } 869 870 static struct ethtool_ops ops = { 871 .get_drvinfo = rtl8150_get_drvinfo, 872 .get_settings = rtl8150_get_settings, 873 .get_link = ethtool_op_get_link 874 }; 875 876 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 877 { 878 rtl8150_t *dev = netdev_priv(netdev); 879 u16 *data = (u16 *) & rq->ifr_ifru; 880 int res = 0; 881 882 switch (cmd) { 883 case SIOCDEVPRIVATE: 884 data[0] = dev->phy; 885 case SIOCDEVPRIVATE + 1: 886 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); 887 break; 888 case SIOCDEVPRIVATE + 2: 889 if (!capable(CAP_NET_ADMIN)) 890 return -EPERM; 891 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); 892 break; 893 default: 894 res = -EOPNOTSUPP; 895 } 896 897 return res; 898 } 899 900 static int rtl8150_probe(struct usb_interface *intf, 901 const struct usb_device_id *id) 902 { 903 struct usb_device *udev = interface_to_usbdev(intf); 904 rtl8150_t *dev; 905 struct net_device *netdev; 906 907 netdev = alloc_etherdev(sizeof(rtl8150_t)); 908 if (!netdev) { 909 err("Out of memory"); 910 return -ENOMEM; 911 } 912 913 dev = netdev_priv(netdev); 914 915 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); 916 if (!dev->intr_buff) { 917 free_netdev(netdev); 918 return -ENOMEM; 919 } 920 921 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); 922 spin_lock_init(&dev->rx_pool_lock); 923 924 dev->udev = udev; 925 dev->netdev = netdev; 926 netdev->open = rtl8150_open; 927 netdev->stop = rtl8150_close; 928 netdev->do_ioctl = rtl8150_ioctl; 929 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; 930 netdev->tx_timeout = rtl8150_tx_timeout; 931 netdev->hard_start_xmit = rtl8150_start_xmit; 932 netdev->set_multicast_list = rtl8150_set_multicast; 933 netdev->set_mac_address = rtl8150_set_mac_address; 934 netdev->get_stats = rtl8150_netdev_stats; 935 SET_ETHTOOL_OPS(netdev, &ops); 936 dev->intr_interval = 100; /* 100ms */ 937 938 if (!alloc_all_urbs(dev)) { 939 err("out of memory"); 940 goto out; 941 } 942 if (!rtl8150_reset(dev)) { 943 err("couldn't reset the device"); 944 goto out1; 945 } 946 fill_skb_pool(dev); 947 set_ethernet_addr(dev); 948 949 usb_set_intfdata(intf, dev); 950 SET_NETDEV_DEV(netdev, &intf->dev); 951 if (register_netdev(netdev) != 0) { 952 err("couldn't register the device"); 953 goto out2; 954 } 955 956 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); 957 958 return 0; 959 960 out2: 961 usb_set_intfdata(intf, NULL); 962 free_skb_pool(dev); 963 out1: 964 free_all_urbs(dev); 965 out: 966 kfree(dev->intr_buff); 967 free_netdev(netdev); 968 return -EIO; 969 } 970 971 static void rtl8150_disconnect(struct usb_interface *intf) 972 { 973 rtl8150_t *dev = usb_get_intfdata(intf); 974 975 usb_set_intfdata(intf, NULL); 976 if (dev) { 977 set_bit(RTL8150_UNPLUG, &dev->flags); 978 tasklet_disable(&dev->tl); 979 tasklet_kill(&dev->tl); 980 unregister_netdev(dev->netdev); 981 unlink_all_urbs(dev); 982 free_all_urbs(dev); 983 free_skb_pool(dev); 984 if (dev->rx_skb) 985 dev_kfree_skb(dev->rx_skb); 986 kfree(dev->intr_buff); 987 free_netdev(dev->netdev); 988 } 989 } 990 991 static int __init usb_rtl8150_init(void) 992 { 993 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 994 DRIVER_DESC "\n"); 995 return usb_register(&rtl8150_driver); 996 } 997 998 static void __exit usb_rtl8150_exit(void) 999 { 1000 usb_deregister(&rtl8150_driver); 1001 } 1002 1003 module_init(usb_rtl8150_init); 1004 module_exit(usb_rtl8150_exit); 1005 1006 MODULE_AUTHOR(DRIVER_AUTHOR); 1007 MODULE_DESCRIPTION(DRIVER_DESC); 1008 MODULE_LICENSE("GPL"); 1009