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 89 #define RTL8150_MTU 1540 90 #define RTL8150_TX_TIMEOUT (HZ) 91 #define RX_SKB_POOL_SIZE 4 92 93 /* rtl8150 flags */ 94 #define RTL8150_HW_CRC 0 95 #define RX_REG_SET 1 96 #define RTL8150_UNPLUG 2 97 #define RX_URB_FAIL 3 98 99 /* Define these values to match your device */ 100 #define VENDOR_ID_REALTEK 0x0bda 101 #define VENDOR_ID_MELCO 0x0411 102 #define VENDOR_ID_MICRONET 0x3980 103 #define VENDOR_ID_LONGSHINE 0x07b8 104 #define VENDOR_ID_OQO 0x1557 105 #define VENDOR_ID_ZYXEL 0x0586 106 107 #define PRODUCT_ID_RTL8150 0x8150 108 #define PRODUCT_ID_LUAKTX 0x0012 109 #define PRODUCT_ID_LCS8138TX 0x401a 110 #define PRODUCT_ID_SP128AR 0x0003 111 #define PRODUCT_ID_PRESTIGE 0x401a 112 113 #undef EEPROM_WRITE 114 115 /* table of devices that work with this driver */ 116 static struct usb_device_id rtl8150_table[] = { 117 {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)}, 118 {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)}, 119 {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)}, 120 {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)}, 121 {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)}, 122 {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)}, 123 {} 124 }; 125 126 MODULE_DEVICE_TABLE(usb, rtl8150_table); 127 128 struct rtl8150 { 129 unsigned long flags; 130 struct usb_device *udev; 131 struct tasklet_struct tl; 132 struct net_device *netdev; 133 struct urb *rx_urb, *tx_urb, *intr_urb, *ctrl_urb; 134 struct sk_buff *tx_skb, *rx_skb; 135 struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE]; 136 spinlock_t rx_pool_lock; 137 struct usb_ctrlrequest dr; 138 int intr_interval; 139 __le16 rx_creg; 140 u8 *intr_buff; 141 u8 phy; 142 }; 143 144 typedef struct rtl8150 rtl8150_t; 145 146 static const char driver_name [] = "rtl8150"; 147 148 /* 149 ** 150 ** device related part of the code 151 ** 152 */ 153 static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) 154 { 155 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), 156 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ, 157 indx, 0, data, size, 500); 158 } 159 160 static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) 161 { 162 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), 163 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE, 164 indx, 0, data, size, 500); 165 } 166 167 static void ctrl_callback(struct urb *urb) 168 { 169 rtl8150_t *dev; 170 int status = urb->status; 171 172 switch (status) { 173 case 0: 174 break; 175 case -EINPROGRESS: 176 break; 177 case -ENOENT: 178 break; 179 default: 180 if (printk_ratelimit()) 181 dev_warn(&urb->dev->dev, "ctrl urb status %d\n", status); 182 } 183 dev = urb->context; 184 clear_bit(RX_REG_SET, &dev->flags); 185 } 186 187 static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size) 188 { 189 int ret; 190 191 if (test_bit(RX_REG_SET, &dev->flags)) 192 return -EAGAIN; 193 194 dev->dr.bRequestType = RTL8150_REQT_WRITE; 195 dev->dr.bRequest = RTL8150_REQ_SET_REGS; 196 dev->dr.wValue = cpu_to_le16(indx); 197 dev->dr.wIndex = 0; 198 dev->dr.wLength = cpu_to_le16(size); 199 dev->ctrl_urb->transfer_buffer_length = size; 200 usb_fill_control_urb(dev->ctrl_urb, dev->udev, 201 usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr, 202 &dev->rx_creg, size, ctrl_callback, dev); 203 if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC))) { 204 if (ret == -ENODEV) 205 netif_device_detach(dev->netdev); 206 dev_err(&dev->udev->dev, 207 "control request submission failed: %d\n", ret); 208 } else 209 set_bit(RX_REG_SET, &dev->flags); 210 211 return ret; 212 } 213 214 static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg) 215 { 216 int i; 217 u8 data[3], tmp; 218 219 data[0] = phy; 220 data[1] = data[2] = 0; 221 tmp = indx | PHY_READ | PHY_GO; 222 i = 0; 223 224 set_registers(dev, PHYADD, sizeof(data), data); 225 set_registers(dev, PHYCNT, 1, &tmp); 226 do { 227 get_registers(dev, PHYCNT, 1, data); 228 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); 229 230 if (i <= MII_TIMEOUT) { 231 get_registers(dev, PHYDAT, 2, data); 232 *reg = data[0] | (data[1] << 8); 233 return 0; 234 } else 235 return 1; 236 } 237 238 static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg) 239 { 240 int i; 241 u8 data[3], tmp; 242 243 data[0] = phy; 244 data[1] = reg & 0xff; 245 data[2] = (reg >> 8) & 0xff; 246 tmp = indx | PHY_WRITE | PHY_GO; 247 i = 0; 248 249 set_registers(dev, PHYADD, sizeof(data), data); 250 set_registers(dev, PHYCNT, 1, &tmp); 251 do { 252 get_registers(dev, PHYCNT, 1, data); 253 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); 254 255 if (i <= MII_TIMEOUT) 256 return 0; 257 else 258 return 1; 259 } 260 261 static inline void set_ethernet_addr(rtl8150_t * dev) 262 { 263 u8 node_id[6]; 264 265 get_registers(dev, IDR, sizeof(node_id), node_id); 266 memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id)); 267 } 268 269 static int rtl8150_set_mac_address(struct net_device *netdev, void *p) 270 { 271 struct sockaddr *addr = p; 272 rtl8150_t *dev = netdev_priv(netdev); 273 274 if (netif_running(netdev)) 275 return -EBUSY; 276 277 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 278 netdev_dbg(netdev, "Setting MAC address to %pM\n", netdev->dev_addr); 279 /* Set the IDR registers. */ 280 set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr); 281 #ifdef EEPROM_WRITE 282 { 283 int i; 284 u8 cr; 285 /* Get the CR contents. */ 286 get_registers(dev, CR, 1, &cr); 287 /* Set the WEPROM bit (eeprom write enable). */ 288 cr |= 0x20; 289 set_registers(dev, CR, 1, &cr); 290 /* Write the MAC address into eeprom. Eeprom writes must be word-sized, 291 so we need to split them up. */ 292 for (i = 0; i * 2 < netdev->addr_len; i++) { 293 set_registers(dev, IDR_EEPROM + (i * 2), 2, 294 netdev->dev_addr + (i * 2)); 295 } 296 /* Clear the WEPROM bit (preventing accidental eeprom writes). */ 297 cr &= 0xdf; 298 set_registers(dev, CR, 1, &cr); 299 } 300 #endif 301 return 0; 302 } 303 304 static int rtl8150_reset(rtl8150_t * dev) 305 { 306 u8 data = 0x10; 307 int i = HZ; 308 309 set_registers(dev, CR, 1, &data); 310 do { 311 get_registers(dev, CR, 1, &data); 312 } while ((data & 0x10) && --i); 313 314 return (i > 0) ? 1 : 0; 315 } 316 317 static int alloc_all_urbs(rtl8150_t * dev) 318 { 319 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 320 if (!dev->rx_urb) 321 return 0; 322 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 323 if (!dev->tx_urb) { 324 usb_free_urb(dev->rx_urb); 325 return 0; 326 } 327 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 328 if (!dev->intr_urb) { 329 usb_free_urb(dev->rx_urb); 330 usb_free_urb(dev->tx_urb); 331 return 0; 332 } 333 dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 334 if (!dev->ctrl_urb) { 335 usb_free_urb(dev->rx_urb); 336 usb_free_urb(dev->tx_urb); 337 usb_free_urb(dev->intr_urb); 338 return 0; 339 } 340 341 return 1; 342 } 343 344 static void free_all_urbs(rtl8150_t * dev) 345 { 346 usb_free_urb(dev->rx_urb); 347 usb_free_urb(dev->tx_urb); 348 usb_free_urb(dev->intr_urb); 349 usb_free_urb(dev->ctrl_urb); 350 } 351 352 static void unlink_all_urbs(rtl8150_t * dev) 353 { 354 usb_kill_urb(dev->rx_urb); 355 usb_kill_urb(dev->tx_urb); 356 usb_kill_urb(dev->intr_urb); 357 usb_kill_urb(dev->ctrl_urb); 358 } 359 360 static inline struct sk_buff *pull_skb(rtl8150_t *dev) 361 { 362 struct sk_buff *skb; 363 int i; 364 365 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 366 if (dev->rx_skb_pool[i]) { 367 skb = dev->rx_skb_pool[i]; 368 dev->rx_skb_pool[i] = NULL; 369 return skb; 370 } 371 } 372 return NULL; 373 } 374 375 static void read_bulk_callback(struct urb *urb) 376 { 377 rtl8150_t *dev; 378 unsigned pkt_len, res; 379 struct sk_buff *skb; 380 struct net_device *netdev; 381 u16 rx_stat; 382 int status = urb->status; 383 int result; 384 385 dev = urb->context; 386 if (!dev) 387 return; 388 if (test_bit(RTL8150_UNPLUG, &dev->flags)) 389 return; 390 netdev = dev->netdev; 391 if (!netif_device_present(netdev)) 392 return; 393 394 switch (status) { 395 case 0: 396 break; 397 case -ENOENT: 398 return; /* the urb is in unlink state */ 399 case -ETIME: 400 if (printk_ratelimit()) 401 dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); 402 goto goon; 403 default: 404 if (printk_ratelimit()) 405 dev_warn(&urb->dev->dev, "Rx status %d\n", status); 406 goto goon; 407 } 408 409 if (!dev->rx_skb) 410 goto resched; 411 /* protect against short packets (tell me why we got some?!?) */ 412 if (urb->actual_length < 4) 413 goto goon; 414 415 res = urb->actual_length; 416 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4)); 417 pkt_len = res - 4; 418 419 skb_put(dev->rx_skb, pkt_len); 420 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); 421 netif_rx(dev->rx_skb); 422 netdev->stats.rx_packets++; 423 netdev->stats.rx_bytes += pkt_len; 424 425 spin_lock(&dev->rx_pool_lock); 426 skb = pull_skb(dev); 427 spin_unlock(&dev->rx_pool_lock); 428 if (!skb) 429 goto resched; 430 431 dev->rx_skb = skb; 432 goon: 433 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 434 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 435 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 436 if (result == -ENODEV) 437 netif_device_detach(dev->netdev); 438 else if (result) { 439 set_bit(RX_URB_FAIL, &dev->flags); 440 goto resched; 441 } else { 442 clear_bit(RX_URB_FAIL, &dev->flags); 443 } 444 445 return; 446 resched: 447 tasklet_schedule(&dev->tl); 448 } 449 450 static void write_bulk_callback(struct urb *urb) 451 { 452 rtl8150_t *dev; 453 int status = urb->status; 454 455 dev = urb->context; 456 if (!dev) 457 return; 458 dev_kfree_skb_irq(dev->tx_skb); 459 if (!netif_device_present(dev->netdev)) 460 return; 461 if (status) 462 dev_info(&urb->dev->dev, "%s: Tx status %d\n", 463 dev->netdev->name, status); 464 dev->netdev->trans_start = jiffies; 465 netif_wake_queue(dev->netdev); 466 } 467 468 static void intr_callback(struct urb *urb) 469 { 470 rtl8150_t *dev; 471 __u8 *d; 472 int status = urb->status; 473 int res; 474 475 dev = urb->context; 476 if (!dev) 477 return; 478 switch (status) { 479 case 0: /* success */ 480 break; 481 case -ECONNRESET: /* unlink */ 482 case -ENOENT: 483 case -ESHUTDOWN: 484 return; 485 /* -EPIPE: should clear the halt */ 486 default: 487 dev_info(&urb->dev->dev, "%s: intr status %d\n", 488 dev->netdev->name, status); 489 goto resubmit; 490 } 491 492 d = urb->transfer_buffer; 493 if (d[0] & TSR_ERRORS) { 494 dev->netdev->stats.tx_errors++; 495 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) 496 dev->netdev->stats.tx_aborted_errors++; 497 if (d[INT_TSR] & TSR_LCOL) 498 dev->netdev->stats.tx_window_errors++; 499 if (d[INT_TSR] & TSR_LOSS_CRS) 500 dev->netdev->stats.tx_carrier_errors++; 501 } 502 /* Report link status changes to the network stack */ 503 if ((d[INT_MSR] & MSR_LINK) == 0) { 504 if (netif_carrier_ok(dev->netdev)) { 505 netif_carrier_off(dev->netdev); 506 netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__); 507 } 508 } else { 509 if (!netif_carrier_ok(dev->netdev)) { 510 netif_carrier_on(dev->netdev); 511 netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__); 512 } 513 } 514 515 resubmit: 516 res = usb_submit_urb (urb, GFP_ATOMIC); 517 if (res == -ENODEV) 518 netif_device_detach(dev->netdev); 519 else if (res) 520 dev_err(&dev->udev->dev, 521 "can't resubmit intr, %s-%s/input0, status %d\n", 522 dev->udev->bus->bus_name, dev->udev->devpath, res); 523 } 524 525 static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) 526 { 527 rtl8150_t *dev = usb_get_intfdata(intf); 528 529 netif_device_detach(dev->netdev); 530 531 if (netif_running(dev->netdev)) { 532 usb_kill_urb(dev->rx_urb); 533 usb_kill_urb(dev->intr_urb); 534 } 535 return 0; 536 } 537 538 static int rtl8150_resume(struct usb_interface *intf) 539 { 540 rtl8150_t *dev = usb_get_intfdata(intf); 541 542 netif_device_attach(dev->netdev); 543 if (netif_running(dev->netdev)) { 544 dev->rx_urb->status = 0; 545 dev->rx_urb->actual_length = 0; 546 read_bulk_callback(dev->rx_urb); 547 548 dev->intr_urb->status = 0; 549 dev->intr_urb->actual_length = 0; 550 intr_callback(dev->intr_urb); 551 } 552 return 0; 553 } 554 555 /* 556 ** 557 ** network related part of the code 558 ** 559 */ 560 561 static void fill_skb_pool(rtl8150_t *dev) 562 { 563 struct sk_buff *skb; 564 int i; 565 566 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 567 if (dev->rx_skb_pool[i]) 568 continue; 569 skb = dev_alloc_skb(RTL8150_MTU + 2); 570 if (!skb) { 571 return; 572 } 573 skb_reserve(skb, 2); 574 dev->rx_skb_pool[i] = skb; 575 } 576 } 577 578 static void free_skb_pool(rtl8150_t *dev) 579 { 580 int i; 581 582 for (i = 0; i < RX_SKB_POOL_SIZE; i++) 583 if (dev->rx_skb_pool[i]) 584 dev_kfree_skb(dev->rx_skb_pool[i]); 585 } 586 587 static void rx_fixup(unsigned long data) 588 { 589 struct rtl8150 *dev = (struct rtl8150 *)data; 590 struct sk_buff *skb; 591 int status; 592 593 spin_lock_irq(&dev->rx_pool_lock); 594 fill_skb_pool(dev); 595 spin_unlock_irq(&dev->rx_pool_lock); 596 if (test_bit(RX_URB_FAIL, &dev->flags)) 597 if (dev->rx_skb) 598 goto try_again; 599 spin_lock_irq(&dev->rx_pool_lock); 600 skb = pull_skb(dev); 601 spin_unlock_irq(&dev->rx_pool_lock); 602 if (skb == NULL) 603 goto tlsched; 604 dev->rx_skb = skb; 605 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 606 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 607 try_again: 608 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 609 if (status == -ENODEV) { 610 netif_device_detach(dev->netdev); 611 } else if (status) { 612 set_bit(RX_URB_FAIL, &dev->flags); 613 goto tlsched; 614 } else { 615 clear_bit(RX_URB_FAIL, &dev->flags); 616 } 617 618 return; 619 tlsched: 620 tasklet_schedule(&dev->tl); 621 } 622 623 static int enable_net_traffic(rtl8150_t * dev) 624 { 625 u8 cr, tcr, rcr, msr; 626 627 if (!rtl8150_reset(dev)) { 628 dev_warn(&dev->udev->dev, "device reset failed\n"); 629 } 630 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ 631 rcr = 0x9e; 632 dev->rx_creg = cpu_to_le16(rcr); 633 tcr = 0xd8; 634 cr = 0x0c; 635 if (!(rcr & 0x80)) 636 set_bit(RTL8150_HW_CRC, &dev->flags); 637 set_registers(dev, RCR, 1, &rcr); 638 set_registers(dev, TCR, 1, &tcr); 639 set_registers(dev, CR, 1, &cr); 640 get_registers(dev, MSR, 1, &msr); 641 642 return 0; 643 } 644 645 static void disable_net_traffic(rtl8150_t * dev) 646 { 647 u8 cr; 648 649 get_registers(dev, CR, 1, &cr); 650 cr &= 0xf3; 651 set_registers(dev, CR, 1, &cr); 652 } 653 654 static void rtl8150_tx_timeout(struct net_device *netdev) 655 { 656 rtl8150_t *dev = netdev_priv(netdev); 657 dev_warn(&netdev->dev, "Tx timeout.\n"); 658 usb_unlink_urb(dev->tx_urb); 659 netdev->stats.tx_errors++; 660 } 661 662 static void rtl8150_set_multicast(struct net_device *netdev) 663 { 664 rtl8150_t *dev = netdev_priv(netdev); 665 netif_stop_queue(netdev); 666 if (netdev->flags & IFF_PROMISC) { 667 dev->rx_creg |= cpu_to_le16(0x0001); 668 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); 669 } else if (!netdev_mc_empty(netdev) || 670 (netdev->flags & IFF_ALLMULTI)) { 671 dev->rx_creg &= cpu_to_le16(0xfffe); 672 dev->rx_creg |= cpu_to_le16(0x0002); 673 dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name); 674 } else { 675 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ 676 dev->rx_creg &= cpu_to_le16(0x00fc); 677 } 678 async_set_registers(dev, RCR, 2); 679 netif_wake_queue(netdev); 680 } 681 682 static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, 683 struct net_device *netdev) 684 { 685 rtl8150_t *dev = netdev_priv(netdev); 686 int count, res; 687 688 netif_stop_queue(netdev); 689 count = (skb->len < 60) ? 60 : skb->len; 690 count = (count & 0x3f) ? count : count + 1; 691 dev->tx_skb = skb; 692 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), 693 skb->data, count, write_bulk_callback, dev); 694 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { 695 /* Can we get/handle EPIPE here? */ 696 if (res == -ENODEV) 697 netif_device_detach(dev->netdev); 698 else { 699 dev_warn(&netdev->dev, "failed tx_urb %d\n", res); 700 netdev->stats.tx_errors++; 701 netif_start_queue(netdev); 702 } 703 } else { 704 netdev->stats.tx_packets++; 705 netdev->stats.tx_bytes += skb->len; 706 netdev->trans_start = jiffies; 707 } 708 709 return NETDEV_TX_OK; 710 } 711 712 713 static void set_carrier(struct net_device *netdev) 714 { 715 rtl8150_t *dev = netdev_priv(netdev); 716 short tmp; 717 718 get_registers(dev, CSCR, 2, &tmp); 719 if (tmp & CSCR_LINK_STATUS) 720 netif_carrier_on(netdev); 721 else 722 netif_carrier_off(netdev); 723 } 724 725 static int rtl8150_open(struct net_device *netdev) 726 { 727 rtl8150_t *dev = netdev_priv(netdev); 728 int res; 729 730 if (dev->rx_skb == NULL) 731 dev->rx_skb = pull_skb(dev); 732 if (!dev->rx_skb) 733 return -ENOMEM; 734 735 set_registers(dev, IDR, 6, netdev->dev_addr); 736 737 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 738 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 739 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { 740 if (res == -ENODEV) 741 netif_device_detach(dev->netdev); 742 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); 743 return res; 744 } 745 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), 746 dev->intr_buff, INTBUFSIZE, intr_callback, 747 dev, dev->intr_interval); 748 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { 749 if (res == -ENODEV) 750 netif_device_detach(dev->netdev); 751 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); 752 usb_kill_urb(dev->rx_urb); 753 return res; 754 } 755 enable_net_traffic(dev); 756 set_carrier(netdev); 757 netif_start_queue(netdev); 758 759 return res; 760 } 761 762 static int rtl8150_close(struct net_device *netdev) 763 { 764 rtl8150_t *dev = netdev_priv(netdev); 765 int res = 0; 766 767 netif_stop_queue(netdev); 768 if (!test_bit(RTL8150_UNPLUG, &dev->flags)) 769 disable_net_traffic(dev); 770 unlink_all_urbs(dev); 771 772 return res; 773 } 774 775 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) 776 { 777 rtl8150_t *dev = netdev_priv(netdev); 778 779 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN); 780 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN); 781 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info); 782 } 783 784 static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) 785 { 786 rtl8150_t *dev = netdev_priv(netdev); 787 short lpa, bmcr; 788 789 ecmd->supported = (SUPPORTED_10baseT_Half | 790 SUPPORTED_10baseT_Full | 791 SUPPORTED_100baseT_Half | 792 SUPPORTED_100baseT_Full | 793 SUPPORTED_Autoneg | 794 SUPPORTED_TP | SUPPORTED_MII); 795 ecmd->port = PORT_TP; 796 ecmd->transceiver = XCVR_INTERNAL; 797 ecmd->phy_address = dev->phy; 798 get_registers(dev, BMCR, 2, &bmcr); 799 get_registers(dev, ANLP, 2, &lpa); 800 if (bmcr & BMCR_ANENABLE) { 801 u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ? 802 SPEED_100 : SPEED_10); 803 ethtool_cmd_speed_set(ecmd, speed); 804 ecmd->autoneg = AUTONEG_ENABLE; 805 if (speed == SPEED_100) 806 ecmd->duplex = (lpa & LPA_100FULL) ? 807 DUPLEX_FULL : DUPLEX_HALF; 808 else 809 ecmd->duplex = (lpa & LPA_10FULL) ? 810 DUPLEX_FULL : DUPLEX_HALF; 811 } else { 812 ecmd->autoneg = AUTONEG_DISABLE; 813 ethtool_cmd_speed_set(ecmd, ((bmcr & BMCR_SPEED100) ? 814 SPEED_100 : SPEED_10)); 815 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? 816 DUPLEX_FULL : DUPLEX_HALF; 817 } 818 return 0; 819 } 820 821 static const struct ethtool_ops ops = { 822 .get_drvinfo = rtl8150_get_drvinfo, 823 .get_settings = rtl8150_get_settings, 824 .get_link = ethtool_op_get_link 825 }; 826 827 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 828 { 829 rtl8150_t *dev = netdev_priv(netdev); 830 u16 *data = (u16 *) & rq->ifr_ifru; 831 int res = 0; 832 833 switch (cmd) { 834 case SIOCDEVPRIVATE: 835 data[0] = dev->phy; 836 case SIOCDEVPRIVATE + 1: 837 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); 838 break; 839 case SIOCDEVPRIVATE + 2: 840 if (!capable(CAP_NET_ADMIN)) 841 return -EPERM; 842 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); 843 break; 844 default: 845 res = -EOPNOTSUPP; 846 } 847 848 return res; 849 } 850 851 static const struct net_device_ops rtl8150_netdev_ops = { 852 .ndo_open = rtl8150_open, 853 .ndo_stop = rtl8150_close, 854 .ndo_do_ioctl = rtl8150_ioctl, 855 .ndo_start_xmit = rtl8150_start_xmit, 856 .ndo_tx_timeout = rtl8150_tx_timeout, 857 .ndo_set_rx_mode = rtl8150_set_multicast, 858 .ndo_set_mac_address = rtl8150_set_mac_address, 859 860 .ndo_change_mtu = eth_change_mtu, 861 .ndo_validate_addr = eth_validate_addr, 862 }; 863 864 static int rtl8150_probe(struct usb_interface *intf, 865 const struct usb_device_id *id) 866 { 867 struct usb_device *udev = interface_to_usbdev(intf); 868 rtl8150_t *dev; 869 struct net_device *netdev; 870 871 netdev = alloc_etherdev(sizeof(rtl8150_t)); 872 if (!netdev) 873 return -ENOMEM; 874 875 dev = netdev_priv(netdev); 876 877 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); 878 if (!dev->intr_buff) { 879 free_netdev(netdev); 880 return -ENOMEM; 881 } 882 883 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); 884 spin_lock_init(&dev->rx_pool_lock); 885 886 dev->udev = udev; 887 dev->netdev = netdev; 888 netdev->netdev_ops = &rtl8150_netdev_ops; 889 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; 890 SET_ETHTOOL_OPS(netdev, &ops); 891 dev->intr_interval = 100; /* 100ms */ 892 893 if (!alloc_all_urbs(dev)) { 894 dev_err(&intf->dev, "out of memory\n"); 895 goto out; 896 } 897 if (!rtl8150_reset(dev)) { 898 dev_err(&intf->dev, "couldn't reset the device\n"); 899 goto out1; 900 } 901 fill_skb_pool(dev); 902 set_ethernet_addr(dev); 903 904 usb_set_intfdata(intf, dev); 905 SET_NETDEV_DEV(netdev, &intf->dev); 906 if (register_netdev(netdev) != 0) { 907 dev_err(&intf->dev, "couldn't register the device\n"); 908 goto out2; 909 } 910 911 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); 912 913 return 0; 914 915 out2: 916 usb_set_intfdata(intf, NULL); 917 free_skb_pool(dev); 918 out1: 919 free_all_urbs(dev); 920 out: 921 kfree(dev->intr_buff); 922 free_netdev(netdev); 923 return -EIO; 924 } 925 926 static void rtl8150_disconnect(struct usb_interface *intf) 927 { 928 rtl8150_t *dev = usb_get_intfdata(intf); 929 930 usb_set_intfdata(intf, NULL); 931 if (dev) { 932 set_bit(RTL8150_UNPLUG, &dev->flags); 933 tasklet_kill(&dev->tl); 934 unregister_netdev(dev->netdev); 935 unlink_all_urbs(dev); 936 free_all_urbs(dev); 937 free_skb_pool(dev); 938 if (dev->rx_skb) 939 dev_kfree_skb(dev->rx_skb); 940 kfree(dev->intr_buff); 941 free_netdev(dev->netdev); 942 } 943 } 944 945 static struct usb_driver rtl8150_driver = { 946 .name = driver_name, 947 .probe = rtl8150_probe, 948 .disconnect = rtl8150_disconnect, 949 .id_table = rtl8150_table, 950 .suspend = rtl8150_suspend, 951 .resume = rtl8150_resume, 952 .disable_hub_initiated_lpm = 1, 953 }; 954 955 module_usb_driver(rtl8150_driver); 956 957 MODULE_AUTHOR(DRIVER_AUTHOR); 958 MODULE_DESCRIPTION(DRIVER_DESC); 959 MODULE_LICENSE("GPL"); 960