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; 215 216 switch (urb->status) { 217 case 0: 218 break; 219 case -EINPROGRESS: 220 break; 221 case -ENOENT: 222 break; 223 default: 224 dev_warn(&urb->dev->dev, "ctrl urb status %d\n", urb->status); 225 } 226 dev = urb->context; 227 clear_bit(RX_REG_SET, &dev->flags); 228 } 229 230 static 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 } 255 256 static 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 } 279 280 static 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 } 302 303 static 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 } 310 311 static 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 } 348 349 static 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 } 361 362 static 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->ctrl_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 } 388 389 static 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 } 396 397 static 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 } 404 405 static 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 } 419 420 static 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 dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); 445 goto goon; 446 default: 447 dev_warn(&urb->dev->dev, "Rx status %d\n", 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; 474 goon: 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; 488 resched: 489 tasklet_schedule(&dev->tl); 490 } 491 492 static 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); 514 try_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; 526 tlsched: 527 tasklet_schedule(&dev->tl); 528 } 529 530 static 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 dev_info(&urb->dev->dev, "%s: Tx status %d\n", 542 dev->netdev->name, urb->status); 543 dev->netdev->trans_start = jiffies; 544 netif_wake_queue(dev->netdev); 545 } 546 547 static void intr_callback(struct urb *urb) 548 { 549 rtl8150_t *dev; 550 __u8 *d; 551 int status; 552 553 dev = urb->context; 554 if (!dev) 555 return; 556 switch (urb->status) { 557 case 0: /* success */ 558 break; 559 case -ECONNRESET: /* unlink */ 560 case -ENOENT: 561 case -ESHUTDOWN: 562 return; 563 /* -EPIPE: should clear the halt */ 564 default: 565 dev_info(&urb->dev->dev, "%s: intr status %d\n", 566 dev->netdev->name, urb->status); 567 goto resubmit; 568 } 569 570 d = urb->transfer_buffer; 571 if (d[0] & TSR_ERRORS) { 572 dev->stats.tx_errors++; 573 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) 574 dev->stats.tx_aborted_errors++; 575 if (d[INT_TSR] & TSR_LCOL) 576 dev->stats.tx_window_errors++; 577 if (d[INT_TSR] & TSR_LOSS_CRS) 578 dev->stats.tx_carrier_errors++; 579 } 580 /* Report link status changes to the network stack */ 581 if ((d[INT_MSR] & MSR_LINK) == 0) { 582 if (netif_carrier_ok(dev->netdev)) { 583 netif_carrier_off(dev->netdev); 584 dbg("%s: LINK LOST\n", __func__); 585 } 586 } else { 587 if (!netif_carrier_ok(dev->netdev)) { 588 netif_carrier_on(dev->netdev); 589 dbg("%s: LINK CAME BACK\n", __func__); 590 } 591 } 592 593 resubmit: 594 status = usb_submit_urb (urb, GFP_ATOMIC); 595 if (status == -ENODEV) 596 netif_device_detach(dev->netdev); 597 else if (status) 598 err ("can't resubmit intr, %s-%s/input0, status %d", 599 dev->udev->bus->bus_name, 600 dev->udev->devpath, status); 601 } 602 603 static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) 604 { 605 rtl8150_t *dev = usb_get_intfdata(intf); 606 607 netif_device_detach(dev->netdev); 608 609 if (netif_running(dev->netdev)) { 610 usb_kill_urb(dev->rx_urb); 611 usb_kill_urb(dev->intr_urb); 612 } 613 return 0; 614 } 615 616 static int rtl8150_resume(struct usb_interface *intf) 617 { 618 rtl8150_t *dev = usb_get_intfdata(intf); 619 620 netif_device_attach(dev->netdev); 621 if (netif_running(dev->netdev)) { 622 dev->rx_urb->status = 0; 623 dev->rx_urb->actual_length = 0; 624 read_bulk_callback(dev->rx_urb); 625 626 dev->intr_urb->status = 0; 627 dev->intr_urb->actual_length = 0; 628 intr_callback(dev->intr_urb); 629 } 630 return 0; 631 } 632 633 /* 634 ** 635 ** network related part of the code 636 ** 637 */ 638 639 static void fill_skb_pool(rtl8150_t *dev) 640 { 641 struct sk_buff *skb; 642 int i; 643 644 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 645 if (dev->rx_skb_pool[i]) 646 continue; 647 skb = dev_alloc_skb(RTL8150_MTU + 2); 648 if (!skb) { 649 return; 650 } 651 skb_reserve(skb, 2); 652 dev->rx_skb_pool[i] = skb; 653 } 654 } 655 656 static void free_skb_pool(rtl8150_t *dev) 657 { 658 int i; 659 660 for (i = 0; i < RX_SKB_POOL_SIZE; i++) 661 if (dev->rx_skb_pool[i]) 662 dev_kfree_skb(dev->rx_skb_pool[i]); 663 } 664 665 static int enable_net_traffic(rtl8150_t * dev) 666 { 667 u8 cr, tcr, rcr, msr; 668 669 if (!rtl8150_reset(dev)) { 670 dev_warn(&dev->udev->dev, "device reset failed\n"); 671 } 672 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ 673 rcr = 0x9e; 674 dev->rx_creg = cpu_to_le16(rcr); 675 tcr = 0xd8; 676 cr = 0x0c; 677 if (!(rcr & 0x80)) 678 set_bit(RTL8150_HW_CRC, &dev->flags); 679 set_registers(dev, RCR, 1, &rcr); 680 set_registers(dev, TCR, 1, &tcr); 681 set_registers(dev, CR, 1, &cr); 682 get_registers(dev, MSR, 1, &msr); 683 684 return 0; 685 } 686 687 static void disable_net_traffic(rtl8150_t * dev) 688 { 689 u8 cr; 690 691 get_registers(dev, CR, 1, &cr); 692 cr &= 0xf3; 693 set_registers(dev, CR, 1, &cr); 694 } 695 696 static struct net_device_stats *rtl8150_netdev_stats(struct net_device *dev) 697 { 698 return &((rtl8150_t *)netdev_priv(dev))->stats; 699 } 700 701 static void rtl8150_tx_timeout(struct net_device *netdev) 702 { 703 rtl8150_t *dev = netdev_priv(netdev); 704 dev_warn(&netdev->dev, "Tx timeout.\n"); 705 usb_unlink_urb(dev->tx_urb); 706 dev->stats.tx_errors++; 707 } 708 709 static void rtl8150_set_multicast(struct net_device *netdev) 710 { 711 rtl8150_t *dev = netdev_priv(netdev); 712 netif_stop_queue(netdev); 713 if (netdev->flags & IFF_PROMISC) { 714 dev->rx_creg |= cpu_to_le16(0x0001); 715 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); 716 } else if (netdev->mc_count || 717 (netdev->flags & IFF_ALLMULTI)) { 718 dev->rx_creg &= cpu_to_le16(0xfffe); 719 dev->rx_creg |= cpu_to_le16(0x0002); 720 dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name); 721 } else { 722 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ 723 dev->rx_creg &= cpu_to_le16(0x00fc); 724 } 725 async_set_registers(dev, RCR, 2); 726 netif_wake_queue(netdev); 727 } 728 729 static int rtl8150_start_xmit(struct sk_buff *skb, struct net_device *netdev) 730 { 731 rtl8150_t *dev = netdev_priv(netdev); 732 int count, res; 733 734 netif_stop_queue(netdev); 735 count = (skb->len < 60) ? 60 : skb->len; 736 count = (count & 0x3f) ? count : count + 1; 737 dev->tx_skb = skb; 738 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), 739 skb->data, count, write_bulk_callback, dev); 740 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { 741 /* Can we get/handle EPIPE here? */ 742 if (res == -ENODEV) 743 netif_device_detach(dev->netdev); 744 else { 745 dev_warn(&netdev->dev, "failed tx_urb %d\n", res); 746 dev->stats.tx_errors++; 747 netif_start_queue(netdev); 748 } 749 } else { 750 dev->stats.tx_packets++; 751 dev->stats.tx_bytes += skb->len; 752 netdev->trans_start = jiffies; 753 } 754 755 return 0; 756 } 757 758 759 static void set_carrier(struct net_device *netdev) 760 { 761 rtl8150_t *dev = netdev_priv(netdev); 762 short tmp; 763 764 get_registers(dev, CSCR, 2, &tmp); 765 if (tmp & CSCR_LINK_STATUS) 766 netif_carrier_on(netdev); 767 else 768 netif_carrier_off(netdev); 769 } 770 771 static int rtl8150_open(struct net_device *netdev) 772 { 773 rtl8150_t *dev = netdev_priv(netdev); 774 int res; 775 776 if (dev->rx_skb == NULL) 777 dev->rx_skb = pull_skb(dev); 778 if (!dev->rx_skb) 779 return -ENOMEM; 780 781 set_registers(dev, IDR, 6, netdev->dev_addr); 782 783 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 784 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 785 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { 786 if (res == -ENODEV) 787 netif_device_detach(dev->netdev); 788 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); 789 return res; 790 } 791 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), 792 dev->intr_buff, INTBUFSIZE, intr_callback, 793 dev, dev->intr_interval); 794 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { 795 if (res == -ENODEV) 796 netif_device_detach(dev->netdev); 797 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); 798 usb_kill_urb(dev->rx_urb); 799 return res; 800 } 801 enable_net_traffic(dev); 802 set_carrier(netdev); 803 netif_start_queue(netdev); 804 805 return res; 806 } 807 808 static int rtl8150_close(struct net_device *netdev) 809 { 810 rtl8150_t *dev = netdev_priv(netdev); 811 int res = 0; 812 813 netif_stop_queue(netdev); 814 if (!test_bit(RTL8150_UNPLUG, &dev->flags)) 815 disable_net_traffic(dev); 816 unlink_all_urbs(dev); 817 818 return res; 819 } 820 821 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) 822 { 823 rtl8150_t *dev = netdev_priv(netdev); 824 825 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN); 826 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN); 827 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info); 828 } 829 830 static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) 831 { 832 rtl8150_t *dev = netdev_priv(netdev); 833 short lpa, bmcr; 834 835 ecmd->supported = (SUPPORTED_10baseT_Half | 836 SUPPORTED_10baseT_Full | 837 SUPPORTED_100baseT_Half | 838 SUPPORTED_100baseT_Full | 839 SUPPORTED_Autoneg | 840 SUPPORTED_TP | SUPPORTED_MII); 841 ecmd->port = PORT_TP; 842 ecmd->transceiver = XCVR_INTERNAL; 843 ecmd->phy_address = dev->phy; 844 get_registers(dev, BMCR, 2, &bmcr); 845 get_registers(dev, ANLP, 2, &lpa); 846 if (bmcr & BMCR_ANENABLE) { 847 ecmd->autoneg = AUTONEG_ENABLE; 848 ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ? 849 SPEED_100 : SPEED_10; 850 if (ecmd->speed == SPEED_100) 851 ecmd->duplex = (lpa & LPA_100FULL) ? 852 DUPLEX_FULL : DUPLEX_HALF; 853 else 854 ecmd->duplex = (lpa & LPA_10FULL) ? 855 DUPLEX_FULL : DUPLEX_HALF; 856 } else { 857 ecmd->autoneg = AUTONEG_DISABLE; 858 ecmd->speed = (bmcr & BMCR_SPEED100) ? 859 SPEED_100 : SPEED_10; 860 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? 861 DUPLEX_FULL : DUPLEX_HALF; 862 } 863 return 0; 864 } 865 866 static struct ethtool_ops ops = { 867 .get_drvinfo = rtl8150_get_drvinfo, 868 .get_settings = rtl8150_get_settings, 869 .get_link = ethtool_op_get_link 870 }; 871 872 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 873 { 874 rtl8150_t *dev = netdev_priv(netdev); 875 u16 *data = (u16 *) & rq->ifr_ifru; 876 int res = 0; 877 878 switch (cmd) { 879 case SIOCDEVPRIVATE: 880 data[0] = dev->phy; 881 case SIOCDEVPRIVATE + 1: 882 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); 883 break; 884 case SIOCDEVPRIVATE + 2: 885 if (!capable(CAP_NET_ADMIN)) 886 return -EPERM; 887 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); 888 break; 889 default: 890 res = -EOPNOTSUPP; 891 } 892 893 return res; 894 } 895 896 static int rtl8150_probe(struct usb_interface *intf, 897 const struct usb_device_id *id) 898 { 899 struct usb_device *udev = interface_to_usbdev(intf); 900 rtl8150_t *dev; 901 struct net_device *netdev; 902 903 netdev = alloc_etherdev(sizeof(rtl8150_t)); 904 if (!netdev) { 905 err("Out of memory"); 906 return -ENOMEM; 907 } 908 909 dev = netdev_priv(netdev); 910 911 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); 912 if (!dev->intr_buff) { 913 free_netdev(netdev); 914 return -ENOMEM; 915 } 916 917 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); 918 spin_lock_init(&dev->rx_pool_lock); 919 920 dev->udev = udev; 921 dev->netdev = 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 SET_ETHTOOL_OPS(netdev, &ops); 932 dev->intr_interval = 100; /* 100ms */ 933 934 if (!alloc_all_urbs(dev)) { 935 err("out of memory"); 936 goto out; 937 } 938 if (!rtl8150_reset(dev)) { 939 err("couldn't reset the device"); 940 goto out1; 941 } 942 fill_skb_pool(dev); 943 set_ethernet_addr(dev); 944 945 usb_set_intfdata(intf, dev); 946 SET_NETDEV_DEV(netdev, &intf->dev); 947 if (register_netdev(netdev) != 0) { 948 err("couldn't register the device"); 949 goto out2; 950 } 951 952 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); 953 954 return 0; 955 956 out2: 957 usb_set_intfdata(intf, NULL); 958 free_skb_pool(dev); 959 out1: 960 free_all_urbs(dev); 961 out: 962 kfree(dev->intr_buff); 963 free_netdev(netdev); 964 return -EIO; 965 } 966 967 static void rtl8150_disconnect(struct usb_interface *intf) 968 { 969 rtl8150_t *dev = usb_get_intfdata(intf); 970 971 usb_set_intfdata(intf, NULL); 972 if (dev) { 973 set_bit(RTL8150_UNPLUG, &dev->flags); 974 tasklet_disable(&dev->tl); 975 tasklet_kill(&dev->tl); 976 unregister_netdev(dev->netdev); 977 unlink_all_urbs(dev); 978 free_all_urbs(dev); 979 free_skb_pool(dev); 980 if (dev->rx_skb) 981 dev_kfree_skb(dev->rx_skb); 982 kfree(dev->intr_buff); 983 free_netdev(dev->netdev); 984 } 985 } 986 987 static int __init usb_rtl8150_init(void) 988 { 989 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 990 DRIVER_DESC "\n"); 991 return usb_register(&rtl8150_driver); 992 } 993 994 static void __exit usb_rtl8150_exit(void) 995 { 996 usb_deregister(&rtl8150_driver); 997 } 998 999 module_init(usb_rtl8150_init); 1000 module_exit(usb_rtl8150_exit); 1001 1002 MODULE_AUTHOR(DRIVER_AUTHOR); 1003 MODULE_DESCRIPTION(DRIVER_DESC); 1004 MODULE_LICENSE("GPL"); 1005