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; 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 u8 *intr_buff; 140 u8 phy; 141 }; 142 143 typedef struct rtl8150 rtl8150_t; 144 145 struct async_req { 146 struct usb_ctrlrequest dr; 147 u16 rx_creg; 148 }; 149 150 static const char driver_name [] = "rtl8150"; 151 152 /* 153 ** 154 ** device related part of the code 155 ** 156 */ 157 static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) 158 { 159 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), 160 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ, 161 indx, 0, data, size, 500); 162 } 163 164 static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) 165 { 166 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), 167 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE, 168 indx, 0, data, size, 500); 169 } 170 171 static void async_set_reg_cb(struct urb *urb) 172 { 173 struct async_req *req = (struct async_req *)urb->context; 174 int status = urb->status; 175 176 if (status < 0) 177 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status); 178 kfree(req); 179 usb_free_urb(urb); 180 } 181 182 static int async_set_registers(rtl8150_t *dev, u16 indx, u16 size, u16 reg) 183 { 184 int res = -ENOMEM; 185 struct urb *async_urb; 186 struct async_req *req; 187 188 req = kmalloc(sizeof(struct async_req), GFP_ATOMIC); 189 if (req == NULL) 190 return res; 191 async_urb = usb_alloc_urb(0, GFP_ATOMIC); 192 if (async_urb == NULL) { 193 kfree(req); 194 return res; 195 } 196 req->rx_creg = cpu_to_le16(reg); 197 req->dr.bRequestType = RTL8150_REQT_WRITE; 198 req->dr.bRequest = RTL8150_REQ_SET_REGS; 199 req->dr.wIndex = 0; 200 req->dr.wValue = cpu_to_le16(indx); 201 req->dr.wLength = cpu_to_le16(size); 202 usb_fill_control_urb(async_urb, dev->udev, 203 usb_sndctrlpipe(dev->udev, 0), (void *)&req->dr, 204 &req->rx_creg, size, async_set_reg_cb, req); 205 res = usb_submit_urb(async_urb, GFP_ATOMIC); 206 if (res) { 207 if (res == -ENODEV) 208 netif_device_detach(dev->netdev); 209 dev_err(&dev->udev->dev, "%s failed with %d\n", __func__, res); 210 } 211 return res; 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 } 333 334 return 1; 335 } 336 337 static void free_all_urbs(rtl8150_t * dev) 338 { 339 usb_free_urb(dev->rx_urb); 340 usb_free_urb(dev->tx_urb); 341 usb_free_urb(dev->intr_urb); 342 } 343 344 static void unlink_all_urbs(rtl8150_t * dev) 345 { 346 usb_kill_urb(dev->rx_urb); 347 usb_kill_urb(dev->tx_urb); 348 usb_kill_urb(dev->intr_urb); 349 } 350 351 static inline struct sk_buff *pull_skb(rtl8150_t *dev) 352 { 353 struct sk_buff *skb; 354 int i; 355 356 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 357 if (dev->rx_skb_pool[i]) { 358 skb = dev->rx_skb_pool[i]; 359 dev->rx_skb_pool[i] = NULL; 360 return skb; 361 } 362 } 363 return NULL; 364 } 365 366 static void read_bulk_callback(struct urb *urb) 367 { 368 rtl8150_t *dev; 369 unsigned pkt_len, res; 370 struct sk_buff *skb; 371 struct net_device *netdev; 372 u16 rx_stat; 373 int status = urb->status; 374 int result; 375 376 dev = urb->context; 377 if (!dev) 378 return; 379 if (test_bit(RTL8150_UNPLUG, &dev->flags)) 380 return; 381 netdev = dev->netdev; 382 if (!netif_device_present(netdev)) 383 return; 384 385 switch (status) { 386 case 0: 387 break; 388 case -ENOENT: 389 return; /* the urb is in unlink state */ 390 case -ETIME: 391 if (printk_ratelimit()) 392 dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); 393 goto goon; 394 default: 395 if (printk_ratelimit()) 396 dev_warn(&urb->dev->dev, "Rx status %d\n", status); 397 goto goon; 398 } 399 400 if (!dev->rx_skb) 401 goto resched; 402 /* protect against short packets (tell me why we got some?!?) */ 403 if (urb->actual_length < 4) 404 goto goon; 405 406 res = urb->actual_length; 407 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4)); 408 pkt_len = res - 4; 409 410 skb_put(dev->rx_skb, pkt_len); 411 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); 412 netif_rx(dev->rx_skb); 413 netdev->stats.rx_packets++; 414 netdev->stats.rx_bytes += pkt_len; 415 416 spin_lock(&dev->rx_pool_lock); 417 skb = pull_skb(dev); 418 spin_unlock(&dev->rx_pool_lock); 419 if (!skb) 420 goto resched; 421 422 dev->rx_skb = skb; 423 goon: 424 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 425 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 426 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 427 if (result == -ENODEV) 428 netif_device_detach(dev->netdev); 429 else if (result) { 430 set_bit(RX_URB_FAIL, &dev->flags); 431 goto resched; 432 } else { 433 clear_bit(RX_URB_FAIL, &dev->flags); 434 } 435 436 return; 437 resched: 438 tasklet_schedule(&dev->tl); 439 } 440 441 static void write_bulk_callback(struct urb *urb) 442 { 443 rtl8150_t *dev; 444 int status = urb->status; 445 446 dev = urb->context; 447 if (!dev) 448 return; 449 dev_kfree_skb_irq(dev->tx_skb); 450 if (!netif_device_present(dev->netdev)) 451 return; 452 if (status) 453 dev_info(&urb->dev->dev, "%s: Tx status %d\n", 454 dev->netdev->name, status); 455 dev->netdev->trans_start = jiffies; 456 netif_wake_queue(dev->netdev); 457 } 458 459 static void intr_callback(struct urb *urb) 460 { 461 rtl8150_t *dev; 462 __u8 *d; 463 int status = urb->status; 464 int res; 465 466 dev = urb->context; 467 if (!dev) 468 return; 469 switch (status) { 470 case 0: /* success */ 471 break; 472 case -ECONNRESET: /* unlink */ 473 case -ENOENT: 474 case -ESHUTDOWN: 475 return; 476 /* -EPIPE: should clear the halt */ 477 default: 478 dev_info(&urb->dev->dev, "%s: intr status %d\n", 479 dev->netdev->name, status); 480 goto resubmit; 481 } 482 483 d = urb->transfer_buffer; 484 if (d[0] & TSR_ERRORS) { 485 dev->netdev->stats.tx_errors++; 486 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) 487 dev->netdev->stats.tx_aborted_errors++; 488 if (d[INT_TSR] & TSR_LCOL) 489 dev->netdev->stats.tx_window_errors++; 490 if (d[INT_TSR] & TSR_LOSS_CRS) 491 dev->netdev->stats.tx_carrier_errors++; 492 } 493 /* Report link status changes to the network stack */ 494 if ((d[INT_MSR] & MSR_LINK) == 0) { 495 if (netif_carrier_ok(dev->netdev)) { 496 netif_carrier_off(dev->netdev); 497 netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__); 498 } 499 } else { 500 if (!netif_carrier_ok(dev->netdev)) { 501 netif_carrier_on(dev->netdev); 502 netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__); 503 } 504 } 505 506 resubmit: 507 res = usb_submit_urb (urb, GFP_ATOMIC); 508 if (res == -ENODEV) 509 netif_device_detach(dev->netdev); 510 else if (res) 511 dev_err(&dev->udev->dev, 512 "can't resubmit intr, %s-%s/input0, status %d\n", 513 dev->udev->bus->bus_name, dev->udev->devpath, res); 514 } 515 516 static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) 517 { 518 rtl8150_t *dev = usb_get_intfdata(intf); 519 520 netif_device_detach(dev->netdev); 521 522 if (netif_running(dev->netdev)) { 523 usb_kill_urb(dev->rx_urb); 524 usb_kill_urb(dev->intr_urb); 525 } 526 return 0; 527 } 528 529 static int rtl8150_resume(struct usb_interface *intf) 530 { 531 rtl8150_t *dev = usb_get_intfdata(intf); 532 533 netif_device_attach(dev->netdev); 534 if (netif_running(dev->netdev)) { 535 dev->rx_urb->status = 0; 536 dev->rx_urb->actual_length = 0; 537 read_bulk_callback(dev->rx_urb); 538 539 dev->intr_urb->status = 0; 540 dev->intr_urb->actual_length = 0; 541 intr_callback(dev->intr_urb); 542 } 543 return 0; 544 } 545 546 /* 547 ** 548 ** network related part of the code 549 ** 550 */ 551 552 static void fill_skb_pool(rtl8150_t *dev) 553 { 554 struct sk_buff *skb; 555 int i; 556 557 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 558 if (dev->rx_skb_pool[i]) 559 continue; 560 skb = dev_alloc_skb(RTL8150_MTU + 2); 561 if (!skb) { 562 return; 563 } 564 skb_reserve(skb, 2); 565 dev->rx_skb_pool[i] = skb; 566 } 567 } 568 569 static void free_skb_pool(rtl8150_t *dev) 570 { 571 int i; 572 573 for (i = 0; i < RX_SKB_POOL_SIZE; i++) 574 if (dev->rx_skb_pool[i]) 575 dev_kfree_skb(dev->rx_skb_pool[i]); 576 } 577 578 static void rx_fixup(unsigned long data) 579 { 580 struct rtl8150 *dev = (struct rtl8150 *)data; 581 struct sk_buff *skb; 582 int status; 583 584 spin_lock_irq(&dev->rx_pool_lock); 585 fill_skb_pool(dev); 586 spin_unlock_irq(&dev->rx_pool_lock); 587 if (test_bit(RX_URB_FAIL, &dev->flags)) 588 if (dev->rx_skb) 589 goto try_again; 590 spin_lock_irq(&dev->rx_pool_lock); 591 skb = pull_skb(dev); 592 spin_unlock_irq(&dev->rx_pool_lock); 593 if (skb == NULL) 594 goto tlsched; 595 dev->rx_skb = skb; 596 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 597 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 598 try_again: 599 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 600 if (status == -ENODEV) { 601 netif_device_detach(dev->netdev); 602 } else if (status) { 603 set_bit(RX_URB_FAIL, &dev->flags); 604 goto tlsched; 605 } else { 606 clear_bit(RX_URB_FAIL, &dev->flags); 607 } 608 609 return; 610 tlsched: 611 tasklet_schedule(&dev->tl); 612 } 613 614 static int enable_net_traffic(rtl8150_t * dev) 615 { 616 u8 cr, tcr, rcr, msr; 617 618 if (!rtl8150_reset(dev)) { 619 dev_warn(&dev->udev->dev, "device reset failed\n"); 620 } 621 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ 622 rcr = 0x9e; 623 tcr = 0xd8; 624 cr = 0x0c; 625 if (!(rcr & 0x80)) 626 set_bit(RTL8150_HW_CRC, &dev->flags); 627 set_registers(dev, RCR, 1, &rcr); 628 set_registers(dev, TCR, 1, &tcr); 629 set_registers(dev, CR, 1, &cr); 630 get_registers(dev, MSR, 1, &msr); 631 632 return 0; 633 } 634 635 static void disable_net_traffic(rtl8150_t * dev) 636 { 637 u8 cr; 638 639 get_registers(dev, CR, 1, &cr); 640 cr &= 0xf3; 641 set_registers(dev, CR, 1, &cr); 642 } 643 644 static void rtl8150_tx_timeout(struct net_device *netdev) 645 { 646 rtl8150_t *dev = netdev_priv(netdev); 647 dev_warn(&netdev->dev, "Tx timeout.\n"); 648 usb_unlink_urb(dev->tx_urb); 649 netdev->stats.tx_errors++; 650 } 651 652 static void rtl8150_set_multicast(struct net_device *netdev) 653 { 654 rtl8150_t *dev = netdev_priv(netdev); 655 u16 rx_creg = 0x9e; 656 657 netif_stop_queue(netdev); 658 if (netdev->flags & IFF_PROMISC) { 659 rx_creg |= 0x0001; 660 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); 661 } else if (!netdev_mc_empty(netdev) || 662 (netdev->flags & IFF_ALLMULTI)) { 663 rx_creg &= 0xfffe; 664 rx_creg |= 0x0002; 665 dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name); 666 } else { 667 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ 668 rx_creg &= 0x00fc; 669 } 670 async_set_registers(dev, RCR, sizeof(rx_creg), rx_creg); 671 netif_wake_queue(netdev); 672 } 673 674 static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, 675 struct net_device *netdev) 676 { 677 rtl8150_t *dev = netdev_priv(netdev); 678 int count, res; 679 680 netif_stop_queue(netdev); 681 count = (skb->len < 60) ? 60 : skb->len; 682 count = (count & 0x3f) ? count : count + 1; 683 dev->tx_skb = skb; 684 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), 685 skb->data, count, write_bulk_callback, dev); 686 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { 687 /* Can we get/handle EPIPE here? */ 688 if (res == -ENODEV) 689 netif_device_detach(dev->netdev); 690 else { 691 dev_warn(&netdev->dev, "failed tx_urb %d\n", res); 692 netdev->stats.tx_errors++; 693 netif_start_queue(netdev); 694 } 695 } else { 696 netdev->stats.tx_packets++; 697 netdev->stats.tx_bytes += skb->len; 698 netdev->trans_start = jiffies; 699 } 700 701 return NETDEV_TX_OK; 702 } 703 704 705 static void set_carrier(struct net_device *netdev) 706 { 707 rtl8150_t *dev = netdev_priv(netdev); 708 short tmp; 709 710 get_registers(dev, CSCR, 2, &tmp); 711 if (tmp & CSCR_LINK_STATUS) 712 netif_carrier_on(netdev); 713 else 714 netif_carrier_off(netdev); 715 } 716 717 static int rtl8150_open(struct net_device *netdev) 718 { 719 rtl8150_t *dev = netdev_priv(netdev); 720 int res; 721 722 if (dev->rx_skb == NULL) 723 dev->rx_skb = pull_skb(dev); 724 if (!dev->rx_skb) 725 return -ENOMEM; 726 727 set_registers(dev, IDR, 6, netdev->dev_addr); 728 729 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 730 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 731 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { 732 if (res == -ENODEV) 733 netif_device_detach(dev->netdev); 734 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); 735 return res; 736 } 737 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), 738 dev->intr_buff, INTBUFSIZE, intr_callback, 739 dev, dev->intr_interval); 740 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { 741 if (res == -ENODEV) 742 netif_device_detach(dev->netdev); 743 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); 744 usb_kill_urb(dev->rx_urb); 745 return res; 746 } 747 enable_net_traffic(dev); 748 set_carrier(netdev); 749 netif_start_queue(netdev); 750 751 return res; 752 } 753 754 static int rtl8150_close(struct net_device *netdev) 755 { 756 rtl8150_t *dev = netdev_priv(netdev); 757 int res = 0; 758 759 netif_stop_queue(netdev); 760 if (!test_bit(RTL8150_UNPLUG, &dev->flags)) 761 disable_net_traffic(dev); 762 unlink_all_urbs(dev); 763 764 return res; 765 } 766 767 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) 768 { 769 rtl8150_t *dev = netdev_priv(netdev); 770 771 strlcpy(info->driver, driver_name, sizeof(info->driver)); 772 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version)); 773 usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); 774 } 775 776 static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) 777 { 778 rtl8150_t *dev = netdev_priv(netdev); 779 short lpa, bmcr; 780 781 ecmd->supported = (SUPPORTED_10baseT_Half | 782 SUPPORTED_10baseT_Full | 783 SUPPORTED_100baseT_Half | 784 SUPPORTED_100baseT_Full | 785 SUPPORTED_Autoneg | 786 SUPPORTED_TP | SUPPORTED_MII); 787 ecmd->port = PORT_TP; 788 ecmd->transceiver = XCVR_INTERNAL; 789 ecmd->phy_address = dev->phy; 790 get_registers(dev, BMCR, 2, &bmcr); 791 get_registers(dev, ANLP, 2, &lpa); 792 if (bmcr & BMCR_ANENABLE) { 793 u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ? 794 SPEED_100 : SPEED_10); 795 ethtool_cmd_speed_set(ecmd, speed); 796 ecmd->autoneg = AUTONEG_ENABLE; 797 if (speed == SPEED_100) 798 ecmd->duplex = (lpa & LPA_100FULL) ? 799 DUPLEX_FULL : DUPLEX_HALF; 800 else 801 ecmd->duplex = (lpa & LPA_10FULL) ? 802 DUPLEX_FULL : DUPLEX_HALF; 803 } else { 804 ecmd->autoneg = AUTONEG_DISABLE; 805 ethtool_cmd_speed_set(ecmd, ((bmcr & BMCR_SPEED100) ? 806 SPEED_100 : SPEED_10)); 807 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? 808 DUPLEX_FULL : DUPLEX_HALF; 809 } 810 return 0; 811 } 812 813 static const struct ethtool_ops ops = { 814 .get_drvinfo = rtl8150_get_drvinfo, 815 .get_settings = rtl8150_get_settings, 816 .get_link = ethtool_op_get_link 817 }; 818 819 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 820 { 821 rtl8150_t *dev = netdev_priv(netdev); 822 u16 *data = (u16 *) & rq->ifr_ifru; 823 int res = 0; 824 825 switch (cmd) { 826 case SIOCDEVPRIVATE: 827 data[0] = dev->phy; 828 case SIOCDEVPRIVATE + 1: 829 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); 830 break; 831 case SIOCDEVPRIVATE + 2: 832 if (!capable(CAP_NET_ADMIN)) 833 return -EPERM; 834 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); 835 break; 836 default: 837 res = -EOPNOTSUPP; 838 } 839 840 return res; 841 } 842 843 static const struct net_device_ops rtl8150_netdev_ops = { 844 .ndo_open = rtl8150_open, 845 .ndo_stop = rtl8150_close, 846 .ndo_do_ioctl = rtl8150_ioctl, 847 .ndo_start_xmit = rtl8150_start_xmit, 848 .ndo_tx_timeout = rtl8150_tx_timeout, 849 .ndo_set_rx_mode = rtl8150_set_multicast, 850 .ndo_set_mac_address = rtl8150_set_mac_address, 851 852 .ndo_change_mtu = eth_change_mtu, 853 .ndo_validate_addr = eth_validate_addr, 854 }; 855 856 static int rtl8150_probe(struct usb_interface *intf, 857 const struct usb_device_id *id) 858 { 859 struct usb_device *udev = interface_to_usbdev(intf); 860 rtl8150_t *dev; 861 struct net_device *netdev; 862 863 netdev = alloc_etherdev(sizeof(rtl8150_t)); 864 if (!netdev) 865 return -ENOMEM; 866 867 dev = netdev_priv(netdev); 868 869 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); 870 if (!dev->intr_buff) { 871 free_netdev(netdev); 872 return -ENOMEM; 873 } 874 875 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); 876 spin_lock_init(&dev->rx_pool_lock); 877 878 dev->udev = udev; 879 dev->netdev = netdev; 880 netdev->netdev_ops = &rtl8150_netdev_ops; 881 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; 882 SET_ETHTOOL_OPS(netdev, &ops); 883 dev->intr_interval = 100; /* 100ms */ 884 885 if (!alloc_all_urbs(dev)) { 886 dev_err(&intf->dev, "out of memory\n"); 887 goto out; 888 } 889 if (!rtl8150_reset(dev)) { 890 dev_err(&intf->dev, "couldn't reset the device\n"); 891 goto out1; 892 } 893 fill_skb_pool(dev); 894 set_ethernet_addr(dev); 895 896 usb_set_intfdata(intf, dev); 897 SET_NETDEV_DEV(netdev, &intf->dev); 898 if (register_netdev(netdev) != 0) { 899 dev_err(&intf->dev, "couldn't register the device\n"); 900 goto out2; 901 } 902 903 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); 904 905 return 0; 906 907 out2: 908 usb_set_intfdata(intf, NULL); 909 free_skb_pool(dev); 910 out1: 911 free_all_urbs(dev); 912 out: 913 kfree(dev->intr_buff); 914 free_netdev(netdev); 915 return -EIO; 916 } 917 918 static void rtl8150_disconnect(struct usb_interface *intf) 919 { 920 rtl8150_t *dev = usb_get_intfdata(intf); 921 922 usb_set_intfdata(intf, NULL); 923 if (dev) { 924 set_bit(RTL8150_UNPLUG, &dev->flags); 925 tasklet_kill(&dev->tl); 926 unregister_netdev(dev->netdev); 927 unlink_all_urbs(dev); 928 free_all_urbs(dev); 929 free_skb_pool(dev); 930 if (dev->rx_skb) 931 dev_kfree_skb(dev->rx_skb); 932 kfree(dev->intr_buff); 933 free_netdev(dev->netdev); 934 } 935 } 936 937 static struct usb_driver rtl8150_driver = { 938 .name = driver_name, 939 .probe = rtl8150_probe, 940 .disconnect = rtl8150_disconnect, 941 .id_table = rtl8150_table, 942 .suspend = rtl8150_suspend, 943 .resume = rtl8150_resume, 944 .disable_hub_initiated_lpm = 1, 945 }; 946 947 module_usb_driver(rtl8150_driver); 948 949 MODULE_AUTHOR(DRIVER_AUTHOR); 950 MODULE_DESCRIPTION(DRIVER_DESC); 951 MODULE_LICENSE("GPL"); 952