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 *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 }; 169 170 typedef struct rtl8150 rtl8150_t; 171 172 static void fill_skb_pool(rtl8150_t *); 173 static void free_skb_pool(rtl8150_t *); 174 static inline struct sk_buff *pull_skb(rtl8150_t *); 175 static void rtl8150_disconnect(struct usb_interface *intf); 176 static int rtl8150_probe(struct usb_interface *intf, 177 const struct usb_device_id *id); 178 static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message); 179 static int rtl8150_resume(struct usb_interface *intf); 180 181 static const char driver_name [] = "rtl8150"; 182 183 static 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 */ 197 static 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 } 203 204 static 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 } 210 211 static 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 } 230 231 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 if (printk_ratelimit()) 447 dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); 448 goto goon; 449 default: 450 if (printk_ratelimit()) 451 dev_warn(&urb->dev->dev, "Rx status %d\n", status); 452 goto goon; 453 } 454 455 if (!dev->rx_skb) 456 goto resched; 457 /* protect against short packets (tell me why we got some?!?) */ 458 if (urb->actual_length < 4) 459 goto goon; 460 461 res = urb->actual_length; 462 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4)); 463 pkt_len = res - 4; 464 465 skb_put(dev->rx_skb, pkt_len); 466 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); 467 netif_rx(dev->rx_skb); 468 netdev->stats.rx_packets++; 469 netdev->stats.rx_bytes += pkt_len; 470 471 spin_lock(&dev->rx_pool_lock); 472 skb = pull_skb(dev); 473 spin_unlock(&dev->rx_pool_lock); 474 if (!skb) 475 goto resched; 476 477 dev->rx_skb = skb; 478 goon: 479 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 480 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 481 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 482 if (result == -ENODEV) 483 netif_device_detach(dev->netdev); 484 else if (result) { 485 set_bit(RX_URB_FAIL, &dev->flags); 486 goto resched; 487 } else { 488 clear_bit(RX_URB_FAIL, &dev->flags); 489 } 490 491 return; 492 resched: 493 tasklet_schedule(&dev->tl); 494 } 495 496 static void rx_fixup(unsigned long data) 497 { 498 rtl8150_t *dev; 499 struct sk_buff *skb; 500 int status; 501 502 dev = (rtl8150_t *)data; 503 504 spin_lock_irq(&dev->rx_pool_lock); 505 fill_skb_pool(dev); 506 spin_unlock_irq(&dev->rx_pool_lock); 507 if (test_bit(RX_URB_FAIL, &dev->flags)) 508 if (dev->rx_skb) 509 goto try_again; 510 spin_lock_irq(&dev->rx_pool_lock); 511 skb = pull_skb(dev); 512 spin_unlock_irq(&dev->rx_pool_lock); 513 if (skb == NULL) 514 goto tlsched; 515 dev->rx_skb = skb; 516 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 517 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 518 try_again: 519 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 520 if (status == -ENODEV) { 521 netif_device_detach(dev->netdev); 522 } else if (status) { 523 set_bit(RX_URB_FAIL, &dev->flags); 524 goto tlsched; 525 } else { 526 clear_bit(RX_URB_FAIL, &dev->flags); 527 } 528 529 return; 530 tlsched: 531 tasklet_schedule(&dev->tl); 532 } 533 534 static void write_bulk_callback(struct urb *urb) 535 { 536 rtl8150_t *dev; 537 int status = urb->status; 538 539 dev = urb->context; 540 if (!dev) 541 return; 542 dev_kfree_skb_irq(dev->tx_skb); 543 if (!netif_device_present(dev->netdev)) 544 return; 545 if (status) 546 dev_info(&urb->dev->dev, "%s: Tx status %d\n", 547 dev->netdev->name, status); 548 dev->netdev->trans_start = jiffies; 549 netif_wake_queue(dev->netdev); 550 } 551 552 static void intr_callback(struct urb *urb) 553 { 554 rtl8150_t *dev; 555 __u8 *d; 556 int status = urb->status; 557 int res; 558 559 dev = urb->context; 560 if (!dev) 561 return; 562 switch (status) { 563 case 0: /* success */ 564 break; 565 case -ECONNRESET: /* unlink */ 566 case -ENOENT: 567 case -ESHUTDOWN: 568 return; 569 /* -EPIPE: should clear the halt */ 570 default: 571 dev_info(&urb->dev->dev, "%s: intr status %d\n", 572 dev->netdev->name, status); 573 goto resubmit; 574 } 575 576 d = urb->transfer_buffer; 577 if (d[0] & TSR_ERRORS) { 578 dev->netdev->stats.tx_errors++; 579 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) 580 dev->netdev->stats.tx_aborted_errors++; 581 if (d[INT_TSR] & TSR_LCOL) 582 dev->netdev->stats.tx_window_errors++; 583 if (d[INT_TSR] & TSR_LOSS_CRS) 584 dev->netdev->stats.tx_carrier_errors++; 585 } 586 /* Report link status changes to the network stack */ 587 if ((d[INT_MSR] & MSR_LINK) == 0) { 588 if (netif_carrier_ok(dev->netdev)) { 589 netif_carrier_off(dev->netdev); 590 dbg("%s: LINK LOST\n", __func__); 591 } 592 } else { 593 if (!netif_carrier_ok(dev->netdev)) { 594 netif_carrier_on(dev->netdev); 595 dbg("%s: LINK CAME BACK\n", __func__); 596 } 597 } 598 599 resubmit: 600 res = usb_submit_urb (urb, GFP_ATOMIC); 601 if (res == -ENODEV) 602 netif_device_detach(dev->netdev); 603 else if (res) 604 err ("can't resubmit intr, %s-%s/input0, status %d", 605 dev->udev->bus->bus_name, 606 dev->udev->devpath, res); 607 } 608 609 static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) 610 { 611 rtl8150_t *dev = usb_get_intfdata(intf); 612 613 netif_device_detach(dev->netdev); 614 615 if (netif_running(dev->netdev)) { 616 usb_kill_urb(dev->rx_urb); 617 usb_kill_urb(dev->intr_urb); 618 } 619 return 0; 620 } 621 622 static int rtl8150_resume(struct usb_interface *intf) 623 { 624 rtl8150_t *dev = usb_get_intfdata(intf); 625 626 netif_device_attach(dev->netdev); 627 if (netif_running(dev->netdev)) { 628 dev->rx_urb->status = 0; 629 dev->rx_urb->actual_length = 0; 630 read_bulk_callback(dev->rx_urb); 631 632 dev->intr_urb->status = 0; 633 dev->intr_urb->actual_length = 0; 634 intr_callback(dev->intr_urb); 635 } 636 return 0; 637 } 638 639 /* 640 ** 641 ** network related part of the code 642 ** 643 */ 644 645 static void fill_skb_pool(rtl8150_t *dev) 646 { 647 struct sk_buff *skb; 648 int i; 649 650 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 651 if (dev->rx_skb_pool[i]) 652 continue; 653 skb = dev_alloc_skb(RTL8150_MTU + 2); 654 if (!skb) { 655 return; 656 } 657 skb_reserve(skb, 2); 658 dev->rx_skb_pool[i] = skb; 659 } 660 } 661 662 static void free_skb_pool(rtl8150_t *dev) 663 { 664 int i; 665 666 for (i = 0; i < RX_SKB_POOL_SIZE; i++) 667 if (dev->rx_skb_pool[i]) 668 dev_kfree_skb(dev->rx_skb_pool[i]); 669 } 670 671 static int enable_net_traffic(rtl8150_t * dev) 672 { 673 u8 cr, tcr, rcr, msr; 674 675 if (!rtl8150_reset(dev)) { 676 dev_warn(&dev->udev->dev, "device reset failed\n"); 677 } 678 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ 679 rcr = 0x9e; 680 dev->rx_creg = cpu_to_le16(rcr); 681 tcr = 0xd8; 682 cr = 0x0c; 683 if (!(rcr & 0x80)) 684 set_bit(RTL8150_HW_CRC, &dev->flags); 685 set_registers(dev, RCR, 1, &rcr); 686 set_registers(dev, TCR, 1, &tcr); 687 set_registers(dev, CR, 1, &cr); 688 get_registers(dev, MSR, 1, &msr); 689 690 return 0; 691 } 692 693 static void disable_net_traffic(rtl8150_t * dev) 694 { 695 u8 cr; 696 697 get_registers(dev, CR, 1, &cr); 698 cr &= 0xf3; 699 set_registers(dev, CR, 1, &cr); 700 } 701 702 static void rtl8150_tx_timeout(struct net_device *netdev) 703 { 704 rtl8150_t *dev = netdev_priv(netdev); 705 dev_warn(&netdev->dev, "Tx timeout.\n"); 706 usb_unlink_urb(dev->tx_urb); 707 netdev->stats.tx_errors++; 708 } 709 710 static void rtl8150_set_multicast(struct net_device *netdev) 711 { 712 rtl8150_t *dev = netdev_priv(netdev); 713 netif_stop_queue(netdev); 714 if (netdev->flags & IFF_PROMISC) { 715 dev->rx_creg |= cpu_to_le16(0x0001); 716 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); 717 } else if (netdev->mc_count || 718 (netdev->flags & IFF_ALLMULTI)) { 719 dev->rx_creg &= cpu_to_le16(0xfffe); 720 dev->rx_creg |= cpu_to_le16(0x0002); 721 dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name); 722 } else { 723 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ 724 dev->rx_creg &= cpu_to_le16(0x00fc); 725 } 726 async_set_registers(dev, RCR, 2); 727 netif_wake_queue(netdev); 728 } 729 730 static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, 731 struct net_device *netdev) 732 { 733 rtl8150_t *dev = netdev_priv(netdev); 734 int count, res; 735 736 netif_stop_queue(netdev); 737 count = (skb->len < 60) ? 60 : skb->len; 738 count = (count & 0x3f) ? count : count + 1; 739 dev->tx_skb = skb; 740 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), 741 skb->data, count, write_bulk_callback, dev); 742 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { 743 /* Can we get/handle EPIPE here? */ 744 if (res == -ENODEV) 745 netif_device_detach(dev->netdev); 746 else { 747 dev_warn(&netdev->dev, "failed tx_urb %d\n", res); 748 netdev->stats.tx_errors++; 749 netif_start_queue(netdev); 750 } 751 } else { 752 netdev->stats.tx_packets++; 753 netdev->stats.tx_bytes += skb->len; 754 netdev->trans_start = jiffies; 755 } 756 757 return NETDEV_TX_OK; 758 } 759 760 761 static void set_carrier(struct net_device *netdev) 762 { 763 rtl8150_t *dev = netdev_priv(netdev); 764 short tmp; 765 766 get_registers(dev, CSCR, 2, &tmp); 767 if (tmp & CSCR_LINK_STATUS) 768 netif_carrier_on(netdev); 769 else 770 netif_carrier_off(netdev); 771 } 772 773 static int rtl8150_open(struct net_device *netdev) 774 { 775 rtl8150_t *dev = netdev_priv(netdev); 776 int res; 777 778 if (dev->rx_skb == NULL) 779 dev->rx_skb = pull_skb(dev); 780 if (!dev->rx_skb) 781 return -ENOMEM; 782 783 set_registers(dev, IDR, 6, netdev->dev_addr); 784 785 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 786 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 787 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { 788 if (res == -ENODEV) 789 netif_device_detach(dev->netdev); 790 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); 791 return res; 792 } 793 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), 794 dev->intr_buff, INTBUFSIZE, intr_callback, 795 dev, dev->intr_interval); 796 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { 797 if (res == -ENODEV) 798 netif_device_detach(dev->netdev); 799 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); 800 usb_kill_urb(dev->rx_urb); 801 return res; 802 } 803 enable_net_traffic(dev); 804 set_carrier(netdev); 805 netif_start_queue(netdev); 806 807 return res; 808 } 809 810 static int rtl8150_close(struct net_device *netdev) 811 { 812 rtl8150_t *dev = netdev_priv(netdev); 813 int res = 0; 814 815 netif_stop_queue(netdev); 816 if (!test_bit(RTL8150_UNPLUG, &dev->flags)) 817 disable_net_traffic(dev); 818 unlink_all_urbs(dev); 819 820 return res; 821 } 822 823 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) 824 { 825 rtl8150_t *dev = netdev_priv(netdev); 826 827 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN); 828 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN); 829 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info); 830 } 831 832 static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) 833 { 834 rtl8150_t *dev = netdev_priv(netdev); 835 short lpa, bmcr; 836 837 ecmd->supported = (SUPPORTED_10baseT_Half | 838 SUPPORTED_10baseT_Full | 839 SUPPORTED_100baseT_Half | 840 SUPPORTED_100baseT_Full | 841 SUPPORTED_Autoneg | 842 SUPPORTED_TP | SUPPORTED_MII); 843 ecmd->port = PORT_TP; 844 ecmd->transceiver = XCVR_INTERNAL; 845 ecmd->phy_address = dev->phy; 846 get_registers(dev, BMCR, 2, &bmcr); 847 get_registers(dev, ANLP, 2, &lpa); 848 if (bmcr & BMCR_ANENABLE) { 849 ecmd->autoneg = AUTONEG_ENABLE; 850 ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ? 851 SPEED_100 : SPEED_10; 852 if (ecmd->speed == SPEED_100) 853 ecmd->duplex = (lpa & LPA_100FULL) ? 854 DUPLEX_FULL : DUPLEX_HALF; 855 else 856 ecmd->duplex = (lpa & LPA_10FULL) ? 857 DUPLEX_FULL : DUPLEX_HALF; 858 } else { 859 ecmd->autoneg = AUTONEG_DISABLE; 860 ecmd->speed = (bmcr & BMCR_SPEED100) ? 861 SPEED_100 : SPEED_10; 862 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? 863 DUPLEX_FULL : DUPLEX_HALF; 864 } 865 return 0; 866 } 867 868 static const struct ethtool_ops ops = { 869 .get_drvinfo = rtl8150_get_drvinfo, 870 .get_settings = rtl8150_get_settings, 871 .get_link = ethtool_op_get_link 872 }; 873 874 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 875 { 876 rtl8150_t *dev = netdev_priv(netdev); 877 u16 *data = (u16 *) & rq->ifr_ifru; 878 int res = 0; 879 880 switch (cmd) { 881 case SIOCDEVPRIVATE: 882 data[0] = dev->phy; 883 case SIOCDEVPRIVATE + 1: 884 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); 885 break; 886 case SIOCDEVPRIVATE + 2: 887 if (!capable(CAP_NET_ADMIN)) 888 return -EPERM; 889 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); 890 break; 891 default: 892 res = -EOPNOTSUPP; 893 } 894 895 return res; 896 } 897 898 static const struct net_device_ops rtl8150_netdev_ops = { 899 .ndo_open = rtl8150_open, 900 .ndo_stop = rtl8150_close, 901 .ndo_do_ioctl = rtl8150_ioctl, 902 .ndo_start_xmit = rtl8150_start_xmit, 903 .ndo_tx_timeout = rtl8150_tx_timeout, 904 .ndo_set_multicast_list = rtl8150_set_multicast, 905 .ndo_set_mac_address = rtl8150_set_mac_address, 906 907 .ndo_change_mtu = eth_change_mtu, 908 .ndo_validate_addr = eth_validate_addr, 909 }; 910 911 static int rtl8150_probe(struct usb_interface *intf, 912 const struct usb_device_id *id) 913 { 914 struct usb_device *udev = interface_to_usbdev(intf); 915 rtl8150_t *dev; 916 struct net_device *netdev; 917 918 netdev = alloc_etherdev(sizeof(rtl8150_t)); 919 if (!netdev) { 920 err("Out of memory"); 921 return -ENOMEM; 922 } 923 924 dev = netdev_priv(netdev); 925 926 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); 927 if (!dev->intr_buff) { 928 free_netdev(netdev); 929 return -ENOMEM; 930 } 931 932 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); 933 spin_lock_init(&dev->rx_pool_lock); 934 935 dev->udev = udev; 936 dev->netdev = netdev; 937 netdev->netdev_ops = &rtl8150_netdev_ops; 938 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; 939 SET_ETHTOOL_OPS(netdev, &ops); 940 dev->intr_interval = 100; /* 100ms */ 941 942 if (!alloc_all_urbs(dev)) { 943 err("out of memory"); 944 goto out; 945 } 946 if (!rtl8150_reset(dev)) { 947 err("couldn't reset the device"); 948 goto out1; 949 } 950 fill_skb_pool(dev); 951 set_ethernet_addr(dev); 952 953 usb_set_intfdata(intf, dev); 954 SET_NETDEV_DEV(netdev, &intf->dev); 955 if (register_netdev(netdev) != 0) { 956 err("couldn't register the device"); 957 goto out2; 958 } 959 960 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); 961 962 return 0; 963 964 out2: 965 usb_set_intfdata(intf, NULL); 966 free_skb_pool(dev); 967 out1: 968 free_all_urbs(dev); 969 out: 970 kfree(dev->intr_buff); 971 free_netdev(netdev); 972 return -EIO; 973 } 974 975 static void rtl8150_disconnect(struct usb_interface *intf) 976 { 977 rtl8150_t *dev = usb_get_intfdata(intf); 978 979 usb_set_intfdata(intf, NULL); 980 if (dev) { 981 set_bit(RTL8150_UNPLUG, &dev->flags); 982 tasklet_disable(&dev->tl); 983 tasklet_kill(&dev->tl); 984 unregister_netdev(dev->netdev); 985 unlink_all_urbs(dev); 986 free_all_urbs(dev); 987 free_skb_pool(dev); 988 if (dev->rx_skb) 989 dev_kfree_skb(dev->rx_skb); 990 kfree(dev->intr_buff); 991 free_netdev(dev->netdev); 992 } 993 } 994 995 static int __init usb_rtl8150_init(void) 996 { 997 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 998 DRIVER_DESC "\n"); 999 return usb_register(&rtl8150_driver); 1000 } 1001 1002 static void __exit usb_rtl8150_exit(void) 1003 { 1004 usb_deregister(&rtl8150_driver); 1005 } 1006 1007 module_init(usb_rtl8150_init); 1008 module_exit(usb_rtl8150_exit); 1009 1010 MODULE_AUTHOR(DRIVER_AUTHOR); 1011 MODULE_DESCRIPTION(DRIVER_DESC); 1012 MODULE_LICENSE("GPL"); 1013