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