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/signal.h> 10 #include <linux/slab.h> 11 #include <linux/module.h> 12 #include <linux/netdevice.h> 13 #include <linux/etherdevice.h> 14 #include <linux/mii.h> 15 #include <linux/ethtool.h> 16 #include <linux/usb.h> 17 #include <asm/uaccess.h> 18 19 /* Version Information */ 20 #define DRIVER_VERSION "v0.6.2 (2004/08/27)" 21 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>" 22 #define DRIVER_DESC "rtl8150 based usb-ethernet driver" 23 24 #define IDR 0x0120 25 #define MAR 0x0126 26 #define CR 0x012e 27 #define TCR 0x012f 28 #define RCR 0x0130 29 #define TSR 0x0132 30 #define RSR 0x0133 31 #define CON0 0x0135 32 #define CON1 0x0136 33 #define MSR 0x0137 34 #define PHYADD 0x0138 35 #define PHYDAT 0x0139 36 #define PHYCNT 0x013b 37 #define GPPC 0x013d 38 #define BMCR 0x0140 39 #define BMSR 0x0142 40 #define ANAR 0x0144 41 #define ANLP 0x0146 42 #define AER 0x0148 43 #define CSCR 0x014C /* This one has the link status */ 44 #define CSCR_LINK_STATUS (1 << 3) 45 46 #define IDR_EEPROM 0x1202 47 48 #define PHY_READ 0 49 #define PHY_WRITE 0x20 50 #define PHY_GO 0x40 51 52 #define MII_TIMEOUT 10 53 #define INTBUFSIZE 8 54 55 #define RTL8150_REQT_READ 0xc0 56 #define RTL8150_REQT_WRITE 0x40 57 #define RTL8150_REQ_GET_REGS 0x05 58 #define RTL8150_REQ_SET_REGS 0x05 59 60 61 /* Transmit status register errors */ 62 #define TSR_ECOL (1<<5) 63 #define TSR_LCOL (1<<4) 64 #define TSR_LOSS_CRS (1<<3) 65 #define TSR_JBR (1<<2) 66 #define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR) 67 /* Receive status register errors */ 68 #define RSR_CRC (1<<2) 69 #define RSR_FAE (1<<1) 70 #define RSR_ERRORS (RSR_CRC | RSR_FAE) 71 72 /* Media status register definitions */ 73 #define MSR_DUPLEX (1<<4) 74 #define MSR_SPEED (1<<3) 75 #define MSR_LINK (1<<2) 76 77 /* Interrupt pipe data */ 78 #define INT_TSR 0x00 79 #define INT_RSR 0x01 80 #define INT_MSR 0x02 81 #define INT_WAKSR 0x03 82 #define INT_TXOK_CNT 0x04 83 #define INT_RXLOST_CNT 0x05 84 #define INT_CRERR_CNT 0x06 85 #define INT_COL_CNT 0x07 86 87 88 #define RTL8150_MTU 1540 89 #define RTL8150_TX_TIMEOUT (HZ) 90 #define RX_SKB_POOL_SIZE 4 91 92 /* rtl8150 flags */ 93 #define RTL8150_HW_CRC 0 94 #define RX_REG_SET 1 95 #define RTL8150_UNPLUG 2 96 #define RX_URB_FAIL 3 97 98 /* Define these values to match your device */ 99 #define VENDOR_ID_REALTEK 0x0bda 100 #define VENDOR_ID_MELCO 0x0411 101 #define VENDOR_ID_MICRONET 0x3980 102 #define VENDOR_ID_LONGSHINE 0x07b8 103 #define VENDOR_ID_OQO 0x1557 104 #define VENDOR_ID_ZYXEL 0x0586 105 106 #define PRODUCT_ID_RTL8150 0x8150 107 #define PRODUCT_ID_LUAKTX 0x0012 108 #define PRODUCT_ID_LCS8138TX 0x401a 109 #define PRODUCT_ID_SP128AR 0x0003 110 #define PRODUCT_ID_PRESTIGE 0x401a 111 112 #undef EEPROM_WRITE 113 114 /* table of devices that work with this driver */ 115 static struct usb_device_id rtl8150_table[] = { 116 {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)}, 117 {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)}, 118 {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)}, 119 {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)}, 120 {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)}, 121 {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)}, 122 {} 123 }; 124 125 MODULE_DEVICE_TABLE(usb, rtl8150_table); 126 127 struct rtl8150 { 128 unsigned long flags; 129 struct usb_device *udev; 130 struct tasklet_struct tl; 131 struct net_device *netdev; 132 struct urb *rx_urb, *tx_urb, *intr_urb; 133 struct sk_buff *tx_skb, *rx_skb; 134 struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE]; 135 spinlock_t rx_pool_lock; 136 struct usb_ctrlrequest dr; 137 int intr_interval; 138 u8 *intr_buff; 139 u8 phy; 140 }; 141 142 typedef struct rtl8150 rtl8150_t; 143 144 struct async_req { 145 struct usb_ctrlrequest dr; 146 u16 rx_creg; 147 }; 148 149 static const char driver_name [] = "rtl8150"; 150 151 /* 152 ** 153 ** device related part of the code 154 ** 155 */ 156 static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) 157 { 158 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), 159 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ, 160 indx, 0, data, size, 500); 161 } 162 163 static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) 164 { 165 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), 166 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE, 167 indx, 0, data, size, 500); 168 } 169 170 static void async_set_reg_cb(struct urb *urb) 171 { 172 struct async_req *req = (struct async_req *)urb->context; 173 int status = urb->status; 174 175 if (status < 0) 176 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status); 177 kfree(req); 178 usb_free_urb(urb); 179 } 180 181 static int async_set_registers(rtl8150_t *dev, u16 indx, u16 size, u16 reg) 182 { 183 int res = -ENOMEM; 184 struct urb *async_urb; 185 struct async_req *req; 186 187 req = kmalloc(sizeof(struct async_req), GFP_ATOMIC); 188 if (req == NULL) 189 return res; 190 async_urb = usb_alloc_urb(0, GFP_ATOMIC); 191 if (async_urb == NULL) { 192 kfree(req); 193 return res; 194 } 195 req->rx_creg = cpu_to_le16(reg); 196 req->dr.bRequestType = RTL8150_REQT_WRITE; 197 req->dr.bRequest = RTL8150_REQ_SET_REGS; 198 req->dr.wIndex = 0; 199 req->dr.wValue = cpu_to_le16(indx); 200 req->dr.wLength = cpu_to_le16(size); 201 usb_fill_control_urb(async_urb, dev->udev, 202 usb_sndctrlpipe(dev->udev, 0), (void *)&req->dr, 203 &req->rx_creg, size, async_set_reg_cb, req); 204 res = usb_submit_urb(async_urb, GFP_ATOMIC); 205 if (res) { 206 if (res == -ENODEV) 207 netif_device_detach(dev->netdev); 208 dev_err(&dev->udev->dev, "%s failed with %d\n", __func__, res); 209 } 210 return res; 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 netdev_dbg(netdev, "Setting MAC address to %pM\n", 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 } 332 333 return 1; 334 } 335 336 static void free_all_urbs(rtl8150_t * dev) 337 { 338 usb_free_urb(dev->rx_urb); 339 usb_free_urb(dev->tx_urb); 340 usb_free_urb(dev->intr_urb); 341 } 342 343 static void unlink_all_urbs(rtl8150_t * dev) 344 { 345 usb_kill_urb(dev->rx_urb); 346 usb_kill_urb(dev->tx_urb); 347 usb_kill_urb(dev->intr_urb); 348 } 349 350 static inline struct sk_buff *pull_skb(rtl8150_t *dev) 351 { 352 struct sk_buff *skb; 353 int i; 354 355 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 356 if (dev->rx_skb_pool[i]) { 357 skb = dev->rx_skb_pool[i]; 358 dev->rx_skb_pool[i] = NULL; 359 return skb; 360 } 361 } 362 return NULL; 363 } 364 365 static void read_bulk_callback(struct urb *urb) 366 { 367 rtl8150_t *dev; 368 unsigned pkt_len, res; 369 struct sk_buff *skb; 370 struct net_device *netdev; 371 u16 rx_stat; 372 int status = urb->status; 373 int result; 374 375 dev = urb->context; 376 if (!dev) 377 return; 378 if (test_bit(RTL8150_UNPLUG, &dev->flags)) 379 return; 380 netdev = dev->netdev; 381 if (!netif_device_present(netdev)) 382 return; 383 384 switch (status) { 385 case 0: 386 break; 387 case -ENOENT: 388 return; /* the urb is in unlink state */ 389 case -ETIME: 390 if (printk_ratelimit()) 391 dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); 392 goto goon; 393 default: 394 if (printk_ratelimit()) 395 dev_warn(&urb->dev->dev, "Rx status %d\n", status); 396 goto goon; 397 } 398 399 if (!dev->rx_skb) 400 goto resched; 401 /* protect against short packets (tell me why we got some?!?) */ 402 if (urb->actual_length < 4) 403 goto goon; 404 405 res = urb->actual_length; 406 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4)); 407 pkt_len = res - 4; 408 409 skb_put(dev->rx_skb, pkt_len); 410 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); 411 netif_rx(dev->rx_skb); 412 netdev->stats.rx_packets++; 413 netdev->stats.rx_bytes += pkt_len; 414 415 spin_lock(&dev->rx_pool_lock); 416 skb = pull_skb(dev); 417 spin_unlock(&dev->rx_pool_lock); 418 if (!skb) 419 goto resched; 420 421 dev->rx_skb = skb; 422 goon: 423 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 424 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 425 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 426 if (result == -ENODEV) 427 netif_device_detach(dev->netdev); 428 else if (result) { 429 set_bit(RX_URB_FAIL, &dev->flags); 430 goto resched; 431 } else { 432 clear_bit(RX_URB_FAIL, &dev->flags); 433 } 434 435 return; 436 resched: 437 tasklet_schedule(&dev->tl); 438 } 439 440 static void write_bulk_callback(struct urb *urb) 441 { 442 rtl8150_t *dev; 443 int status = urb->status; 444 445 dev = urb->context; 446 if (!dev) 447 return; 448 dev_kfree_skb_irq(dev->tx_skb); 449 if (!netif_device_present(dev->netdev)) 450 return; 451 if (status) 452 dev_info(&urb->dev->dev, "%s: Tx status %d\n", 453 dev->netdev->name, status); 454 netif_trans_update(dev->netdev); 455 netif_wake_queue(dev->netdev); 456 } 457 458 static void intr_callback(struct urb *urb) 459 { 460 rtl8150_t *dev; 461 __u8 *d; 462 int status = urb->status; 463 int res; 464 465 dev = urb->context; 466 if (!dev) 467 return; 468 switch (status) { 469 case 0: /* success */ 470 break; 471 case -ECONNRESET: /* unlink */ 472 case -ENOENT: 473 case -ESHUTDOWN: 474 return; 475 /* -EPIPE: should clear the halt */ 476 default: 477 dev_info(&urb->dev->dev, "%s: intr status %d\n", 478 dev->netdev->name, status); 479 goto resubmit; 480 } 481 482 d = urb->transfer_buffer; 483 if (d[0] & TSR_ERRORS) { 484 dev->netdev->stats.tx_errors++; 485 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) 486 dev->netdev->stats.tx_aborted_errors++; 487 if (d[INT_TSR] & TSR_LCOL) 488 dev->netdev->stats.tx_window_errors++; 489 if (d[INT_TSR] & TSR_LOSS_CRS) 490 dev->netdev->stats.tx_carrier_errors++; 491 } 492 /* Report link status changes to the network stack */ 493 if ((d[INT_MSR] & MSR_LINK) == 0) { 494 if (netif_carrier_ok(dev->netdev)) { 495 netif_carrier_off(dev->netdev); 496 netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__); 497 } 498 } else { 499 if (!netif_carrier_ok(dev->netdev)) { 500 netif_carrier_on(dev->netdev); 501 netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__); 502 } 503 } 504 505 resubmit: 506 res = usb_submit_urb (urb, GFP_ATOMIC); 507 if (res == -ENODEV) 508 netif_device_detach(dev->netdev); 509 else if (res) 510 dev_err(&dev->udev->dev, 511 "can't resubmit intr, %s-%s/input0, status %d\n", 512 dev->udev->bus->bus_name, dev->udev->devpath, res); 513 } 514 515 static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) 516 { 517 rtl8150_t *dev = usb_get_intfdata(intf); 518 519 netif_device_detach(dev->netdev); 520 521 if (netif_running(dev->netdev)) { 522 usb_kill_urb(dev->rx_urb); 523 usb_kill_urb(dev->intr_urb); 524 } 525 return 0; 526 } 527 528 static int rtl8150_resume(struct usb_interface *intf) 529 { 530 rtl8150_t *dev = usb_get_intfdata(intf); 531 532 netif_device_attach(dev->netdev); 533 if (netif_running(dev->netdev)) { 534 dev->rx_urb->status = 0; 535 dev->rx_urb->actual_length = 0; 536 read_bulk_callback(dev->rx_urb); 537 538 dev->intr_urb->status = 0; 539 dev->intr_urb->actual_length = 0; 540 intr_callback(dev->intr_urb); 541 } 542 return 0; 543 } 544 545 /* 546 ** 547 ** network related part of the code 548 ** 549 */ 550 551 static void fill_skb_pool(rtl8150_t *dev) 552 { 553 struct sk_buff *skb; 554 int i; 555 556 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 557 if (dev->rx_skb_pool[i]) 558 continue; 559 skb = dev_alloc_skb(RTL8150_MTU + 2); 560 if (!skb) { 561 return; 562 } 563 skb_reserve(skb, 2); 564 dev->rx_skb_pool[i] = skb; 565 } 566 } 567 568 static void free_skb_pool(rtl8150_t *dev) 569 { 570 int i; 571 572 for (i = 0; i < RX_SKB_POOL_SIZE; i++) 573 if (dev->rx_skb_pool[i]) 574 dev_kfree_skb(dev->rx_skb_pool[i]); 575 } 576 577 static void rx_fixup(unsigned long data) 578 { 579 struct rtl8150 *dev = (struct rtl8150 *)data; 580 struct sk_buff *skb; 581 int status; 582 583 spin_lock_irq(&dev->rx_pool_lock); 584 fill_skb_pool(dev); 585 spin_unlock_irq(&dev->rx_pool_lock); 586 if (test_bit(RX_URB_FAIL, &dev->flags)) 587 if (dev->rx_skb) 588 goto try_again; 589 spin_lock_irq(&dev->rx_pool_lock); 590 skb = pull_skb(dev); 591 spin_unlock_irq(&dev->rx_pool_lock); 592 if (skb == NULL) 593 goto tlsched; 594 dev->rx_skb = skb; 595 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 596 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 597 try_again: 598 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 599 if (status == -ENODEV) { 600 netif_device_detach(dev->netdev); 601 } else if (status) { 602 set_bit(RX_URB_FAIL, &dev->flags); 603 goto tlsched; 604 } else { 605 clear_bit(RX_URB_FAIL, &dev->flags); 606 } 607 608 return; 609 tlsched: 610 tasklet_schedule(&dev->tl); 611 } 612 613 static int enable_net_traffic(rtl8150_t * dev) 614 { 615 u8 cr, tcr, rcr, msr; 616 617 if (!rtl8150_reset(dev)) { 618 dev_warn(&dev->udev->dev, "device reset failed\n"); 619 } 620 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ 621 rcr = 0x9e; 622 tcr = 0xd8; 623 cr = 0x0c; 624 if (!(rcr & 0x80)) 625 set_bit(RTL8150_HW_CRC, &dev->flags); 626 set_registers(dev, RCR, 1, &rcr); 627 set_registers(dev, TCR, 1, &tcr); 628 set_registers(dev, CR, 1, &cr); 629 get_registers(dev, MSR, 1, &msr); 630 631 return 0; 632 } 633 634 static void disable_net_traffic(rtl8150_t * dev) 635 { 636 u8 cr; 637 638 get_registers(dev, CR, 1, &cr); 639 cr &= 0xf3; 640 set_registers(dev, CR, 1, &cr); 641 } 642 643 static void rtl8150_tx_timeout(struct net_device *netdev) 644 { 645 rtl8150_t *dev = netdev_priv(netdev); 646 dev_warn(&netdev->dev, "Tx timeout.\n"); 647 usb_unlink_urb(dev->tx_urb); 648 netdev->stats.tx_errors++; 649 } 650 651 static void rtl8150_set_multicast(struct net_device *netdev) 652 { 653 rtl8150_t *dev = netdev_priv(netdev); 654 u16 rx_creg = 0x9e; 655 656 netif_stop_queue(netdev); 657 if (netdev->flags & IFF_PROMISC) { 658 rx_creg |= 0x0001; 659 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); 660 } else if (!netdev_mc_empty(netdev) || 661 (netdev->flags & IFF_ALLMULTI)) { 662 rx_creg &= 0xfffe; 663 rx_creg |= 0x0002; 664 dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name); 665 } else { 666 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ 667 rx_creg &= 0x00fc; 668 } 669 async_set_registers(dev, RCR, sizeof(rx_creg), rx_creg); 670 netif_wake_queue(netdev); 671 } 672 673 static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, 674 struct net_device *netdev) 675 { 676 rtl8150_t *dev = netdev_priv(netdev); 677 int count, res; 678 679 netif_stop_queue(netdev); 680 count = (skb->len < 60) ? 60 : skb->len; 681 count = (count & 0x3f) ? count : count + 1; 682 dev->tx_skb = skb; 683 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), 684 skb->data, count, write_bulk_callback, dev); 685 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { 686 /* Can we get/handle EPIPE here? */ 687 if (res == -ENODEV) 688 netif_device_detach(dev->netdev); 689 else { 690 dev_warn(&netdev->dev, "failed tx_urb %d\n", res); 691 netdev->stats.tx_errors++; 692 netif_start_queue(netdev); 693 } 694 } else { 695 netdev->stats.tx_packets++; 696 netdev->stats.tx_bytes += skb->len; 697 netif_trans_update(netdev); 698 } 699 700 return NETDEV_TX_OK; 701 } 702 703 704 static void set_carrier(struct net_device *netdev) 705 { 706 rtl8150_t *dev = netdev_priv(netdev); 707 short tmp; 708 709 get_registers(dev, CSCR, 2, &tmp); 710 if (tmp & CSCR_LINK_STATUS) 711 netif_carrier_on(netdev); 712 else 713 netif_carrier_off(netdev); 714 } 715 716 static int rtl8150_open(struct net_device *netdev) 717 { 718 rtl8150_t *dev = netdev_priv(netdev); 719 int res; 720 721 if (dev->rx_skb == NULL) 722 dev->rx_skb = pull_skb(dev); 723 if (!dev->rx_skb) 724 return -ENOMEM; 725 726 set_registers(dev, IDR, 6, netdev->dev_addr); 727 728 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 729 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 730 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { 731 if (res == -ENODEV) 732 netif_device_detach(dev->netdev); 733 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); 734 return res; 735 } 736 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), 737 dev->intr_buff, INTBUFSIZE, intr_callback, 738 dev, dev->intr_interval); 739 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { 740 if (res == -ENODEV) 741 netif_device_detach(dev->netdev); 742 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); 743 usb_kill_urb(dev->rx_urb); 744 return res; 745 } 746 enable_net_traffic(dev); 747 set_carrier(netdev); 748 netif_start_queue(netdev); 749 750 return res; 751 } 752 753 static int rtl8150_close(struct net_device *netdev) 754 { 755 rtl8150_t *dev = netdev_priv(netdev); 756 757 netif_stop_queue(netdev); 758 if (!test_bit(RTL8150_UNPLUG, &dev->flags)) 759 disable_net_traffic(dev); 760 unlink_all_urbs(dev); 761 762 return 0; 763 } 764 765 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) 766 { 767 rtl8150_t *dev = netdev_priv(netdev); 768 769 strlcpy(info->driver, driver_name, sizeof(info->driver)); 770 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version)); 771 usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); 772 } 773 774 static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) 775 { 776 rtl8150_t *dev = netdev_priv(netdev); 777 short lpa, bmcr; 778 779 ecmd->supported = (SUPPORTED_10baseT_Half | 780 SUPPORTED_10baseT_Full | 781 SUPPORTED_100baseT_Half | 782 SUPPORTED_100baseT_Full | 783 SUPPORTED_Autoneg | 784 SUPPORTED_TP | SUPPORTED_MII); 785 ecmd->port = PORT_TP; 786 ecmd->transceiver = XCVR_INTERNAL; 787 ecmd->phy_address = dev->phy; 788 get_registers(dev, BMCR, 2, &bmcr); 789 get_registers(dev, ANLP, 2, &lpa); 790 if (bmcr & BMCR_ANENABLE) { 791 u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ? 792 SPEED_100 : SPEED_10); 793 ethtool_cmd_speed_set(ecmd, speed); 794 ecmd->autoneg = AUTONEG_ENABLE; 795 if (speed == SPEED_100) 796 ecmd->duplex = (lpa & LPA_100FULL) ? 797 DUPLEX_FULL : DUPLEX_HALF; 798 else 799 ecmd->duplex = (lpa & LPA_10FULL) ? 800 DUPLEX_FULL : DUPLEX_HALF; 801 } else { 802 ecmd->autoneg = AUTONEG_DISABLE; 803 ethtool_cmd_speed_set(ecmd, ((bmcr & BMCR_SPEED100) ? 804 SPEED_100 : SPEED_10)); 805 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? 806 DUPLEX_FULL : DUPLEX_HALF; 807 } 808 return 0; 809 } 810 811 static const struct ethtool_ops ops = { 812 .get_drvinfo = rtl8150_get_drvinfo, 813 .get_settings = rtl8150_get_settings, 814 .get_link = ethtool_op_get_link 815 }; 816 817 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 818 { 819 rtl8150_t *dev = netdev_priv(netdev); 820 u16 *data = (u16 *) & rq->ifr_ifru; 821 int res = 0; 822 823 switch (cmd) { 824 case SIOCDEVPRIVATE: 825 data[0] = dev->phy; 826 case SIOCDEVPRIVATE + 1: 827 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); 828 break; 829 case SIOCDEVPRIVATE + 2: 830 if (!capable(CAP_NET_ADMIN)) 831 return -EPERM; 832 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); 833 break; 834 default: 835 res = -EOPNOTSUPP; 836 } 837 838 return res; 839 } 840 841 static const struct net_device_ops rtl8150_netdev_ops = { 842 .ndo_open = rtl8150_open, 843 .ndo_stop = rtl8150_close, 844 .ndo_do_ioctl = rtl8150_ioctl, 845 .ndo_start_xmit = rtl8150_start_xmit, 846 .ndo_tx_timeout = rtl8150_tx_timeout, 847 .ndo_set_rx_mode = rtl8150_set_multicast, 848 .ndo_set_mac_address = rtl8150_set_mac_address, 849 850 .ndo_change_mtu = eth_change_mtu, 851 .ndo_validate_addr = eth_validate_addr, 852 }; 853 854 static int rtl8150_probe(struct usb_interface *intf, 855 const struct usb_device_id *id) 856 { 857 struct usb_device *udev = interface_to_usbdev(intf); 858 rtl8150_t *dev; 859 struct net_device *netdev; 860 861 netdev = alloc_etherdev(sizeof(rtl8150_t)); 862 if (!netdev) 863 return -ENOMEM; 864 865 dev = netdev_priv(netdev); 866 867 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); 868 if (!dev->intr_buff) { 869 free_netdev(netdev); 870 return -ENOMEM; 871 } 872 873 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); 874 spin_lock_init(&dev->rx_pool_lock); 875 876 dev->udev = udev; 877 dev->netdev = netdev; 878 netdev->netdev_ops = &rtl8150_netdev_ops; 879 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; 880 netdev->ethtool_ops = &ops; 881 dev->intr_interval = 100; /* 100ms */ 882 883 if (!alloc_all_urbs(dev)) { 884 dev_err(&intf->dev, "out of memory\n"); 885 goto out; 886 } 887 if (!rtl8150_reset(dev)) { 888 dev_err(&intf->dev, "couldn't reset the device\n"); 889 goto out1; 890 } 891 fill_skb_pool(dev); 892 set_ethernet_addr(dev); 893 894 usb_set_intfdata(intf, dev); 895 SET_NETDEV_DEV(netdev, &intf->dev); 896 if (register_netdev(netdev) != 0) { 897 dev_err(&intf->dev, "couldn't register the device\n"); 898 goto out2; 899 } 900 901 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); 902 903 return 0; 904 905 out2: 906 usb_set_intfdata(intf, NULL); 907 free_skb_pool(dev); 908 out1: 909 free_all_urbs(dev); 910 out: 911 kfree(dev->intr_buff); 912 free_netdev(netdev); 913 return -EIO; 914 } 915 916 static void rtl8150_disconnect(struct usb_interface *intf) 917 { 918 rtl8150_t *dev = usb_get_intfdata(intf); 919 920 usb_set_intfdata(intf, NULL); 921 if (dev) { 922 set_bit(RTL8150_UNPLUG, &dev->flags); 923 tasklet_kill(&dev->tl); 924 unregister_netdev(dev->netdev); 925 unlink_all_urbs(dev); 926 free_all_urbs(dev); 927 free_skb_pool(dev); 928 if (dev->rx_skb) 929 dev_kfree_skb(dev->rx_skb); 930 kfree(dev->intr_buff); 931 free_netdev(dev->netdev); 932 } 933 } 934 935 static struct usb_driver rtl8150_driver = { 936 .name = driver_name, 937 .probe = rtl8150_probe, 938 .disconnect = rtl8150_disconnect, 939 .id_table = rtl8150_table, 940 .suspend = rtl8150_suspend, 941 .resume = rtl8150_resume, 942 .disable_hub_initiated_lpm = 1, 943 }; 944 945 module_usb_driver(rtl8150_driver); 946 947 MODULE_AUTHOR(DRIVER_AUTHOR); 948 MODULE_DESCRIPTION(DRIVER_DESC); 949 MODULE_LICENSE("GPL"); 950