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 <linux/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 const 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 void *buf; 159 int ret; 160 161 buf = kmalloc(size, GFP_NOIO); 162 if (!buf) 163 return -ENOMEM; 164 165 ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), 166 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ, 167 indx, 0, buf, size, 500); 168 if (ret > 0 && ret <= size) 169 memcpy(data, buf, ret); 170 kfree(buf); 171 return ret; 172 } 173 174 static int set_registers(rtl8150_t * dev, u16 indx, u16 size, const void *data) 175 { 176 void *buf; 177 int ret; 178 179 buf = kmemdup(data, size, GFP_NOIO); 180 if (!buf) 181 return -ENOMEM; 182 183 ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), 184 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE, 185 indx, 0, buf, size, 500); 186 kfree(buf); 187 return ret; 188 } 189 190 static void async_set_reg_cb(struct urb *urb) 191 { 192 struct async_req *req = (struct async_req *)urb->context; 193 int status = urb->status; 194 195 if (status < 0) 196 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status); 197 kfree(req); 198 usb_free_urb(urb); 199 } 200 201 static int async_set_registers(rtl8150_t *dev, u16 indx, u16 size, u16 reg) 202 { 203 int res = -ENOMEM; 204 struct urb *async_urb; 205 struct async_req *req; 206 207 req = kmalloc(sizeof(struct async_req), GFP_ATOMIC); 208 if (req == NULL) 209 return res; 210 async_urb = usb_alloc_urb(0, GFP_ATOMIC); 211 if (async_urb == NULL) { 212 kfree(req); 213 return res; 214 } 215 req->rx_creg = cpu_to_le16(reg); 216 req->dr.bRequestType = RTL8150_REQT_WRITE; 217 req->dr.bRequest = RTL8150_REQ_SET_REGS; 218 req->dr.wIndex = 0; 219 req->dr.wValue = cpu_to_le16(indx); 220 req->dr.wLength = cpu_to_le16(size); 221 usb_fill_control_urb(async_urb, dev->udev, 222 usb_sndctrlpipe(dev->udev, 0), (void *)&req->dr, 223 &req->rx_creg, size, async_set_reg_cb, req); 224 res = usb_submit_urb(async_urb, GFP_ATOMIC); 225 if (res) { 226 if (res == -ENODEV) 227 netif_device_detach(dev->netdev); 228 dev_err(&dev->udev->dev, "%s failed with %d\n", __func__, res); 229 } 230 return res; 231 } 232 233 static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg) 234 { 235 int i; 236 u8 data[3], tmp; 237 238 data[0] = phy; 239 data[1] = data[2] = 0; 240 tmp = indx | PHY_READ | PHY_GO; 241 i = 0; 242 243 set_registers(dev, PHYADD, sizeof(data), data); 244 set_registers(dev, PHYCNT, 1, &tmp); 245 do { 246 get_registers(dev, PHYCNT, 1, data); 247 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); 248 249 if (i <= MII_TIMEOUT) { 250 get_registers(dev, PHYDAT, 2, data); 251 *reg = data[0] | (data[1] << 8); 252 return 0; 253 } else 254 return 1; 255 } 256 257 static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg) 258 { 259 int i; 260 u8 data[3], tmp; 261 262 data[0] = phy; 263 data[1] = reg & 0xff; 264 data[2] = (reg >> 8) & 0xff; 265 tmp = indx | PHY_WRITE | PHY_GO; 266 i = 0; 267 268 set_registers(dev, PHYADD, sizeof(data), data); 269 set_registers(dev, PHYCNT, 1, &tmp); 270 do { 271 get_registers(dev, PHYCNT, 1, data); 272 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); 273 274 if (i <= MII_TIMEOUT) 275 return 0; 276 else 277 return 1; 278 } 279 280 static inline void set_ethernet_addr(rtl8150_t * dev) 281 { 282 u8 node_id[6]; 283 284 get_registers(dev, IDR, sizeof(node_id), node_id); 285 memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id)); 286 } 287 288 static int rtl8150_set_mac_address(struct net_device *netdev, void *p) 289 { 290 struct sockaddr *addr = p; 291 rtl8150_t *dev = netdev_priv(netdev); 292 293 if (netif_running(netdev)) 294 return -EBUSY; 295 296 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 297 netdev_dbg(netdev, "Setting MAC address to %pM\n", netdev->dev_addr); 298 /* Set the IDR registers. */ 299 set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr); 300 #ifdef EEPROM_WRITE 301 { 302 int i; 303 u8 cr; 304 /* Get the CR contents. */ 305 get_registers(dev, CR, 1, &cr); 306 /* Set the WEPROM bit (eeprom write enable). */ 307 cr |= 0x20; 308 set_registers(dev, CR, 1, &cr); 309 /* Write the MAC address into eeprom. Eeprom writes must be word-sized, 310 so we need to split them up. */ 311 for (i = 0; i * 2 < netdev->addr_len; i++) { 312 set_registers(dev, IDR_EEPROM + (i * 2), 2, 313 netdev->dev_addr + (i * 2)); 314 } 315 /* Clear the WEPROM bit (preventing accidental eeprom writes). */ 316 cr &= 0xdf; 317 set_registers(dev, CR, 1, &cr); 318 } 319 #endif 320 return 0; 321 } 322 323 static int rtl8150_reset(rtl8150_t * dev) 324 { 325 u8 data = 0x10; 326 int i = HZ; 327 328 set_registers(dev, CR, 1, &data); 329 do { 330 get_registers(dev, CR, 1, &data); 331 } while ((data & 0x10) && --i); 332 333 return (i > 0) ? 1 : 0; 334 } 335 336 static int alloc_all_urbs(rtl8150_t * dev) 337 { 338 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 339 if (!dev->rx_urb) 340 return 0; 341 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 342 if (!dev->tx_urb) { 343 usb_free_urb(dev->rx_urb); 344 return 0; 345 } 346 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 347 if (!dev->intr_urb) { 348 usb_free_urb(dev->rx_urb); 349 usb_free_urb(dev->tx_urb); 350 return 0; 351 } 352 353 return 1; 354 } 355 356 static void free_all_urbs(rtl8150_t * dev) 357 { 358 usb_free_urb(dev->rx_urb); 359 usb_free_urb(dev->tx_urb); 360 usb_free_urb(dev->intr_urb); 361 } 362 363 static void unlink_all_urbs(rtl8150_t * dev) 364 { 365 usb_kill_urb(dev->rx_urb); 366 usb_kill_urb(dev->tx_urb); 367 usb_kill_urb(dev->intr_urb); 368 } 369 370 static inline struct sk_buff *pull_skb(rtl8150_t *dev) 371 { 372 struct sk_buff *skb; 373 int i; 374 375 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 376 if (dev->rx_skb_pool[i]) { 377 skb = dev->rx_skb_pool[i]; 378 dev->rx_skb_pool[i] = NULL; 379 return skb; 380 } 381 } 382 return NULL; 383 } 384 385 static void read_bulk_callback(struct urb *urb) 386 { 387 rtl8150_t *dev; 388 unsigned pkt_len, res; 389 struct sk_buff *skb; 390 struct net_device *netdev; 391 u16 rx_stat; 392 int status = urb->status; 393 int result; 394 unsigned long flags; 395 396 dev = urb->context; 397 if (!dev) 398 return; 399 if (test_bit(RTL8150_UNPLUG, &dev->flags)) 400 return; 401 netdev = dev->netdev; 402 if (!netif_device_present(netdev)) 403 return; 404 405 switch (status) { 406 case 0: 407 break; 408 case -ENOENT: 409 return; /* the urb is in unlink state */ 410 case -ETIME: 411 if (printk_ratelimit()) 412 dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); 413 goto goon; 414 default: 415 if (printk_ratelimit()) 416 dev_warn(&urb->dev->dev, "Rx status %d\n", status); 417 goto goon; 418 } 419 420 if (!dev->rx_skb) 421 goto resched; 422 /* protect against short packets (tell me why we got some?!?) */ 423 if (urb->actual_length < 4) 424 goto goon; 425 426 res = urb->actual_length; 427 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4)); 428 pkt_len = res - 4; 429 430 skb_put(dev->rx_skb, pkt_len); 431 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); 432 netif_rx(dev->rx_skb); 433 netdev->stats.rx_packets++; 434 netdev->stats.rx_bytes += pkt_len; 435 436 spin_lock_irqsave(&dev->rx_pool_lock, flags); 437 skb = pull_skb(dev); 438 spin_unlock_irqrestore(&dev->rx_pool_lock, flags); 439 if (!skb) 440 goto resched; 441 442 dev->rx_skb = skb; 443 goon: 444 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 445 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 446 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 447 if (result == -ENODEV) 448 netif_device_detach(dev->netdev); 449 else if (result) { 450 set_bit(RX_URB_FAIL, &dev->flags); 451 goto resched; 452 } else { 453 clear_bit(RX_URB_FAIL, &dev->flags); 454 } 455 456 return; 457 resched: 458 tasklet_schedule(&dev->tl); 459 } 460 461 static void write_bulk_callback(struct urb *urb) 462 { 463 rtl8150_t *dev; 464 int status = urb->status; 465 466 dev = urb->context; 467 if (!dev) 468 return; 469 dev_kfree_skb_irq(dev->tx_skb); 470 if (!netif_device_present(dev->netdev)) 471 return; 472 if (status) 473 dev_info(&urb->dev->dev, "%s: Tx status %d\n", 474 dev->netdev->name, status); 475 netif_trans_update(dev->netdev); 476 netif_wake_queue(dev->netdev); 477 } 478 479 static void intr_callback(struct urb *urb) 480 { 481 rtl8150_t *dev; 482 __u8 *d; 483 int status = urb->status; 484 int res; 485 486 dev = urb->context; 487 if (!dev) 488 return; 489 switch (status) { 490 case 0: /* success */ 491 break; 492 case -ECONNRESET: /* unlink */ 493 case -ENOENT: 494 case -ESHUTDOWN: 495 return; 496 /* -EPIPE: should clear the halt */ 497 default: 498 dev_info(&urb->dev->dev, "%s: intr status %d\n", 499 dev->netdev->name, status); 500 goto resubmit; 501 } 502 503 d = urb->transfer_buffer; 504 if (d[0] & TSR_ERRORS) { 505 dev->netdev->stats.tx_errors++; 506 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) 507 dev->netdev->stats.tx_aborted_errors++; 508 if (d[INT_TSR] & TSR_LCOL) 509 dev->netdev->stats.tx_window_errors++; 510 if (d[INT_TSR] & TSR_LOSS_CRS) 511 dev->netdev->stats.tx_carrier_errors++; 512 } 513 /* Report link status changes to the network stack */ 514 if ((d[INT_MSR] & MSR_LINK) == 0) { 515 if (netif_carrier_ok(dev->netdev)) { 516 netif_carrier_off(dev->netdev); 517 netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__); 518 } 519 } else { 520 if (!netif_carrier_ok(dev->netdev)) { 521 netif_carrier_on(dev->netdev); 522 netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__); 523 } 524 } 525 526 resubmit: 527 res = usb_submit_urb (urb, GFP_ATOMIC); 528 if (res == -ENODEV) 529 netif_device_detach(dev->netdev); 530 else if (res) 531 dev_err(&dev->udev->dev, 532 "can't resubmit intr, %s-%s/input0, status %d\n", 533 dev->udev->bus->bus_name, dev->udev->devpath, res); 534 } 535 536 static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) 537 { 538 rtl8150_t *dev = usb_get_intfdata(intf); 539 540 netif_device_detach(dev->netdev); 541 542 if (netif_running(dev->netdev)) { 543 usb_kill_urb(dev->rx_urb); 544 usb_kill_urb(dev->intr_urb); 545 } 546 return 0; 547 } 548 549 static int rtl8150_resume(struct usb_interface *intf) 550 { 551 rtl8150_t *dev = usb_get_intfdata(intf); 552 553 netif_device_attach(dev->netdev); 554 if (netif_running(dev->netdev)) { 555 dev->rx_urb->status = 0; 556 dev->rx_urb->actual_length = 0; 557 read_bulk_callback(dev->rx_urb); 558 559 dev->intr_urb->status = 0; 560 dev->intr_urb->actual_length = 0; 561 intr_callback(dev->intr_urb); 562 } 563 return 0; 564 } 565 566 /* 567 ** 568 ** network related part of the code 569 ** 570 */ 571 572 static void fill_skb_pool(rtl8150_t *dev) 573 { 574 struct sk_buff *skb; 575 int i; 576 577 for (i = 0; i < RX_SKB_POOL_SIZE; i++) { 578 if (dev->rx_skb_pool[i]) 579 continue; 580 skb = dev_alloc_skb(RTL8150_MTU + 2); 581 if (!skb) { 582 return; 583 } 584 skb_reserve(skb, 2); 585 dev->rx_skb_pool[i] = skb; 586 } 587 } 588 589 static void free_skb_pool(rtl8150_t *dev) 590 { 591 int i; 592 593 for (i = 0; i < RX_SKB_POOL_SIZE; i++) 594 if (dev->rx_skb_pool[i]) 595 dev_kfree_skb(dev->rx_skb_pool[i]); 596 } 597 598 static void rx_fixup(unsigned long data) 599 { 600 struct rtl8150 *dev = (struct rtl8150 *)data; 601 struct sk_buff *skb; 602 int status; 603 604 spin_lock_irq(&dev->rx_pool_lock); 605 fill_skb_pool(dev); 606 spin_unlock_irq(&dev->rx_pool_lock); 607 if (test_bit(RX_URB_FAIL, &dev->flags)) 608 if (dev->rx_skb) 609 goto try_again; 610 spin_lock_irq(&dev->rx_pool_lock); 611 skb = pull_skb(dev); 612 spin_unlock_irq(&dev->rx_pool_lock); 613 if (skb == NULL) 614 goto tlsched; 615 dev->rx_skb = skb; 616 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 617 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 618 try_again: 619 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); 620 if (status == -ENODEV) { 621 netif_device_detach(dev->netdev); 622 } else if (status) { 623 set_bit(RX_URB_FAIL, &dev->flags); 624 goto tlsched; 625 } else { 626 clear_bit(RX_URB_FAIL, &dev->flags); 627 } 628 629 return; 630 tlsched: 631 tasklet_schedule(&dev->tl); 632 } 633 634 static int enable_net_traffic(rtl8150_t * dev) 635 { 636 u8 cr, tcr, rcr, msr; 637 638 if (!rtl8150_reset(dev)) { 639 dev_warn(&dev->udev->dev, "device reset failed\n"); 640 } 641 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ 642 rcr = 0x9e; 643 tcr = 0xd8; 644 cr = 0x0c; 645 if (!(rcr & 0x80)) 646 set_bit(RTL8150_HW_CRC, &dev->flags); 647 set_registers(dev, RCR, 1, &rcr); 648 set_registers(dev, TCR, 1, &tcr); 649 set_registers(dev, CR, 1, &cr); 650 get_registers(dev, MSR, 1, &msr); 651 652 return 0; 653 } 654 655 static void disable_net_traffic(rtl8150_t * dev) 656 { 657 u8 cr; 658 659 get_registers(dev, CR, 1, &cr); 660 cr &= 0xf3; 661 set_registers(dev, CR, 1, &cr); 662 } 663 664 static void rtl8150_tx_timeout(struct net_device *netdev) 665 { 666 rtl8150_t *dev = netdev_priv(netdev); 667 dev_warn(&netdev->dev, "Tx timeout.\n"); 668 usb_unlink_urb(dev->tx_urb); 669 netdev->stats.tx_errors++; 670 } 671 672 static void rtl8150_set_multicast(struct net_device *netdev) 673 { 674 rtl8150_t *dev = netdev_priv(netdev); 675 u16 rx_creg = 0x9e; 676 677 netif_stop_queue(netdev); 678 if (netdev->flags & IFF_PROMISC) { 679 rx_creg |= 0x0001; 680 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); 681 } else if (!netdev_mc_empty(netdev) || 682 (netdev->flags & IFF_ALLMULTI)) { 683 rx_creg &= 0xfffe; 684 rx_creg |= 0x0002; 685 dev_dbg(&netdev->dev, "%s: allmulti set\n", netdev->name); 686 } else { 687 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ 688 rx_creg &= 0x00fc; 689 } 690 async_set_registers(dev, RCR, sizeof(rx_creg), rx_creg); 691 netif_wake_queue(netdev); 692 } 693 694 static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, 695 struct net_device *netdev) 696 { 697 rtl8150_t *dev = netdev_priv(netdev); 698 int count, res; 699 700 netif_stop_queue(netdev); 701 count = (skb->len < 60) ? 60 : skb->len; 702 count = (count & 0x3f) ? count : count + 1; 703 dev->tx_skb = skb; 704 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), 705 skb->data, count, write_bulk_callback, dev); 706 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { 707 /* Can we get/handle EPIPE here? */ 708 if (res == -ENODEV) 709 netif_device_detach(dev->netdev); 710 else { 711 dev_warn(&netdev->dev, "failed tx_urb %d\n", res); 712 netdev->stats.tx_errors++; 713 netif_start_queue(netdev); 714 } 715 } else { 716 netdev->stats.tx_packets++; 717 netdev->stats.tx_bytes += skb->len; 718 netif_trans_update(netdev); 719 } 720 721 return NETDEV_TX_OK; 722 } 723 724 725 static void set_carrier(struct net_device *netdev) 726 { 727 rtl8150_t *dev = netdev_priv(netdev); 728 short tmp; 729 730 get_registers(dev, CSCR, 2, &tmp); 731 if (tmp & CSCR_LINK_STATUS) 732 netif_carrier_on(netdev); 733 else 734 netif_carrier_off(netdev); 735 } 736 737 static int rtl8150_open(struct net_device *netdev) 738 { 739 rtl8150_t *dev = netdev_priv(netdev); 740 int res; 741 742 if (dev->rx_skb == NULL) 743 dev->rx_skb = pull_skb(dev); 744 if (!dev->rx_skb) 745 return -ENOMEM; 746 747 set_registers(dev, IDR, 6, netdev->dev_addr); 748 749 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), 750 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); 751 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { 752 if (res == -ENODEV) 753 netif_device_detach(dev->netdev); 754 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); 755 return res; 756 } 757 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), 758 dev->intr_buff, INTBUFSIZE, intr_callback, 759 dev, dev->intr_interval); 760 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { 761 if (res == -ENODEV) 762 netif_device_detach(dev->netdev); 763 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); 764 usb_kill_urb(dev->rx_urb); 765 return res; 766 } 767 enable_net_traffic(dev); 768 set_carrier(netdev); 769 netif_start_queue(netdev); 770 771 return res; 772 } 773 774 static int rtl8150_close(struct net_device *netdev) 775 { 776 rtl8150_t *dev = netdev_priv(netdev); 777 778 netif_stop_queue(netdev); 779 if (!test_bit(RTL8150_UNPLUG, &dev->flags)) 780 disable_net_traffic(dev); 781 unlink_all_urbs(dev); 782 783 return 0; 784 } 785 786 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) 787 { 788 rtl8150_t *dev = netdev_priv(netdev); 789 790 strlcpy(info->driver, driver_name, sizeof(info->driver)); 791 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version)); 792 usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); 793 } 794 795 static int rtl8150_get_link_ksettings(struct net_device *netdev, 796 struct ethtool_link_ksettings *ecmd) 797 { 798 rtl8150_t *dev = netdev_priv(netdev); 799 short lpa, bmcr; 800 u32 supported; 801 802 supported = (SUPPORTED_10baseT_Half | 803 SUPPORTED_10baseT_Full | 804 SUPPORTED_100baseT_Half | 805 SUPPORTED_100baseT_Full | 806 SUPPORTED_Autoneg | 807 SUPPORTED_TP | SUPPORTED_MII); 808 ecmd->base.port = PORT_TP; 809 ecmd->base.phy_address = dev->phy; 810 get_registers(dev, BMCR, 2, &bmcr); 811 get_registers(dev, ANLP, 2, &lpa); 812 if (bmcr & BMCR_ANENABLE) { 813 u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ? 814 SPEED_100 : SPEED_10); 815 ecmd->base.speed = speed; 816 ecmd->base.autoneg = AUTONEG_ENABLE; 817 if (speed == SPEED_100) 818 ecmd->base.duplex = (lpa & LPA_100FULL) ? 819 DUPLEX_FULL : DUPLEX_HALF; 820 else 821 ecmd->base.duplex = (lpa & LPA_10FULL) ? 822 DUPLEX_FULL : DUPLEX_HALF; 823 } else { 824 ecmd->base.autoneg = AUTONEG_DISABLE; 825 ecmd->base.speed = ((bmcr & BMCR_SPEED100) ? 826 SPEED_100 : SPEED_10); 827 ecmd->base.duplex = (bmcr & BMCR_FULLDPLX) ? 828 DUPLEX_FULL : DUPLEX_HALF; 829 } 830 831 ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.supported, 832 supported); 833 834 return 0; 835 } 836 837 static const struct ethtool_ops ops = { 838 .get_drvinfo = rtl8150_get_drvinfo, 839 .get_link = ethtool_op_get_link, 840 .get_link_ksettings = rtl8150_get_link_ksettings, 841 }; 842 843 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 844 { 845 rtl8150_t *dev = netdev_priv(netdev); 846 u16 *data = (u16 *) & rq->ifr_ifru; 847 int res = 0; 848 849 switch (cmd) { 850 case SIOCDEVPRIVATE: 851 data[0] = dev->phy; 852 case SIOCDEVPRIVATE + 1: 853 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); 854 break; 855 case SIOCDEVPRIVATE + 2: 856 if (!capable(CAP_NET_ADMIN)) 857 return -EPERM; 858 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); 859 break; 860 default: 861 res = -EOPNOTSUPP; 862 } 863 864 return res; 865 } 866 867 static const struct net_device_ops rtl8150_netdev_ops = { 868 .ndo_open = rtl8150_open, 869 .ndo_stop = rtl8150_close, 870 .ndo_do_ioctl = rtl8150_ioctl, 871 .ndo_start_xmit = rtl8150_start_xmit, 872 .ndo_tx_timeout = rtl8150_tx_timeout, 873 .ndo_set_rx_mode = rtl8150_set_multicast, 874 .ndo_set_mac_address = rtl8150_set_mac_address, 875 876 .ndo_validate_addr = eth_validate_addr, 877 }; 878 879 static int rtl8150_probe(struct usb_interface *intf, 880 const struct usb_device_id *id) 881 { 882 struct usb_device *udev = interface_to_usbdev(intf); 883 rtl8150_t *dev; 884 struct net_device *netdev; 885 886 netdev = alloc_etherdev(sizeof(rtl8150_t)); 887 if (!netdev) 888 return -ENOMEM; 889 890 dev = netdev_priv(netdev); 891 892 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); 893 if (!dev->intr_buff) { 894 free_netdev(netdev); 895 return -ENOMEM; 896 } 897 898 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); 899 spin_lock_init(&dev->rx_pool_lock); 900 901 dev->udev = udev; 902 dev->netdev = netdev; 903 netdev->netdev_ops = &rtl8150_netdev_ops; 904 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; 905 netdev->ethtool_ops = &ops; 906 dev->intr_interval = 100; /* 100ms */ 907 908 if (!alloc_all_urbs(dev)) { 909 dev_err(&intf->dev, "out of memory\n"); 910 goto out; 911 } 912 if (!rtl8150_reset(dev)) { 913 dev_err(&intf->dev, "couldn't reset the device\n"); 914 goto out1; 915 } 916 fill_skb_pool(dev); 917 set_ethernet_addr(dev); 918 919 usb_set_intfdata(intf, dev); 920 SET_NETDEV_DEV(netdev, &intf->dev); 921 if (register_netdev(netdev) != 0) { 922 dev_err(&intf->dev, "couldn't register the device\n"); 923 goto out2; 924 } 925 926 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); 927 928 return 0; 929 930 out2: 931 usb_set_intfdata(intf, NULL); 932 free_skb_pool(dev); 933 out1: 934 free_all_urbs(dev); 935 out: 936 kfree(dev->intr_buff); 937 free_netdev(netdev); 938 return -EIO; 939 } 940 941 static void rtl8150_disconnect(struct usb_interface *intf) 942 { 943 rtl8150_t *dev = usb_get_intfdata(intf); 944 945 usb_set_intfdata(intf, NULL); 946 if (dev) { 947 set_bit(RTL8150_UNPLUG, &dev->flags); 948 tasklet_kill(&dev->tl); 949 unregister_netdev(dev->netdev); 950 unlink_all_urbs(dev); 951 free_all_urbs(dev); 952 free_skb_pool(dev); 953 if (dev->rx_skb) 954 dev_kfree_skb(dev->rx_skb); 955 kfree(dev->intr_buff); 956 free_netdev(dev->netdev); 957 } 958 } 959 960 static struct usb_driver rtl8150_driver = { 961 .name = driver_name, 962 .probe = rtl8150_probe, 963 .disconnect = rtl8150_disconnect, 964 .id_table = rtl8150_table, 965 .suspend = rtl8150_suspend, 966 .resume = rtl8150_resume, 967 .disable_hub_initiated_lpm = 1, 968 }; 969 970 module_usb_driver(rtl8150_driver); 971 972 MODULE_AUTHOR(DRIVER_AUTHOR); 973 MODULE_DESCRIPTION(DRIVER_DESC); 974 MODULE_LICENSE("GPL"); 975