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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net)4 */5 6#include <linux/signal.h>7#include <linux/slab.h>8#include <linux/module.h>9#include <linux/netdevice.h>10#include <linux/etherdevice.h>11#include <linux/mii.h>12#include <linux/ethtool.h>13#include <linux/usb.h>14#include <linux/uaccess.h>15 16/* Version Information */17#define DRIVER_VERSION "v0.6.2 (2004/08/27)"18#define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"19#define DRIVER_DESC "rtl8150 based usb-ethernet driver"20 21#define IDR 0x012022#define MAR 0x012623#define CR 0x012e24#define TCR 0x012f25#define RCR 0x013026#define TSR 0x013227#define RSR 0x013328#define CON0 0x013529#define CON1 0x013630#define MSR 0x013731#define PHYADD 0x013832#define PHYDAT 0x013933#define PHYCNT 0x013b34#define GPPC 0x013d35#define BMCR 0x014036#define BMSR 0x014237#define ANAR 0x014438#define ANLP 0x014639#define AER 0x014840#define CSCR 0x014C /* This one has the link status */41#define CSCR_LINK_STATUS (1 << 3)42 43#define IDR_EEPROM 0x120244 45#define PHY_READ 046#define PHY_WRITE 0x2047#define PHY_GO 0x4048 49#define MII_TIMEOUT 1050#define INTBUFSIZE 851 52#define RTL8150_REQT_READ 0xc053#define RTL8150_REQT_WRITE 0x4054#define RTL8150_REQ_GET_REGS 0x0555#define RTL8150_REQ_SET_REGS 0x0556 57 58/* Transmit status register errors */59#define TSR_ECOL (1<<5)60#define TSR_LCOL (1<<4)61#define TSR_LOSS_CRS (1<<3)62#define TSR_JBR (1<<2)63#define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR)64/* Receive status register errors */65#define RSR_CRC (1<<2)66#define RSR_FAE (1<<1)67#define RSR_ERRORS (RSR_CRC | RSR_FAE)68 69/* Media status register definitions */70#define MSR_DUPLEX (1<<4)71#define MSR_SPEED (1<<3)72#define MSR_LINK (1<<2)73 74/* Interrupt pipe data */75#define INT_TSR 0x0076#define INT_RSR 0x0177#define INT_MSR 0x0278#define INT_WAKSR 0x0379#define INT_TXOK_CNT 0x0480#define INT_RXLOST_CNT 0x0581#define INT_CRERR_CNT 0x0682#define INT_COL_CNT 0x0783 84 85#define RTL8150_MTU 154086#define RTL8150_TX_TIMEOUT (HZ)87#define RX_SKB_POOL_SIZE 488 89/* rtl8150 flags */90#define RTL8150_HW_CRC 091#define RX_REG_SET 192#define RTL8150_UNPLUG 293#define RX_URB_FAIL 394 95/* Define these values to match your device */96#define VENDOR_ID_REALTEK 0x0bda97#define VENDOR_ID_MELCO 0x041198#define VENDOR_ID_MICRONET 0x398099#define VENDOR_ID_LONGSHINE 0x07b8100#define VENDOR_ID_OQO 0x1557101#define VENDOR_ID_ZYXEL 0x0586102 103#define PRODUCT_ID_RTL8150 0x8150104#define PRODUCT_ID_LUAKTX 0x0012105#define PRODUCT_ID_LCS8138TX 0x401a106#define PRODUCT_ID_SP128AR 0x0003107#define PRODUCT_ID_PRESTIGE 0x401a108 109#undef EEPROM_WRITE110 111/* table of devices that work with this driver */112static const struct usb_device_id rtl8150_table[] = {113 {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)},114 {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)},115 {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)},116 {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)},117 {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)},118 {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)},119 {}120};121 122MODULE_DEVICE_TABLE(usb, rtl8150_table);123 124struct rtl8150 {125 unsigned long flags;126 struct usb_device *udev;127 struct tasklet_struct tl;128 struct net_device *netdev;129 struct urb *rx_urb, *tx_urb, *intr_urb;130 struct sk_buff *tx_skb, *rx_skb;131 struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE];132 spinlock_t rx_pool_lock;133 struct usb_ctrlrequest dr;134 int intr_interval;135 u8 *intr_buff;136 u8 phy;137};138 139typedef struct rtl8150 rtl8150_t;140 141struct async_req {142 struct usb_ctrlrequest dr;143 u16 rx_creg;144};145 146static const char driver_name [] = "rtl8150";147 148/*149**150** device related part of the code151**152*/153static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)154{155 return usb_control_msg_recv(dev->udev, 0, RTL8150_REQ_GET_REGS,156 RTL8150_REQT_READ, indx, 0, data, size,157 1000, GFP_NOIO);158}159 160static int set_registers(rtl8150_t * dev, u16 indx, u16 size, const void *data)161{162 return usb_control_msg_send(dev->udev, 0, RTL8150_REQ_SET_REGS,163 RTL8150_REQT_WRITE, indx, 0, data, size,164 1000, GFP_NOIO);165}166 167static void async_set_reg_cb(struct urb *urb)168{169 struct async_req *req = (struct async_req *)urb->context;170 int status = urb->status;171 172 if (status < 0)173 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status);174 kfree(req);175 usb_free_urb(urb);176}177 178static int async_set_registers(rtl8150_t *dev, u16 indx, u16 size, u16 reg)179{180 int res = -ENOMEM;181 struct urb *async_urb;182 struct async_req *req;183 184 req = kmalloc(sizeof(struct async_req), GFP_ATOMIC);185 if (req == NULL)186 return res;187 async_urb = usb_alloc_urb(0, GFP_ATOMIC);188 if (async_urb == NULL) {189 kfree(req);190 return res;191 }192 req->rx_creg = cpu_to_le16(reg);193 req->dr.bRequestType = RTL8150_REQT_WRITE;194 req->dr.bRequest = RTL8150_REQ_SET_REGS;195 req->dr.wIndex = 0;196 req->dr.wValue = cpu_to_le16(indx);197 req->dr.wLength = cpu_to_le16(size);198 usb_fill_control_urb(async_urb, dev->udev,199 usb_sndctrlpipe(dev->udev, 0), (void *)&req->dr,200 &req->rx_creg, size, async_set_reg_cb, req);201 res = usb_submit_urb(async_urb, GFP_ATOMIC);202 if (res) {203 if (res == -ENODEV)204 netif_device_detach(dev->netdev);205 dev_err(&dev->udev->dev, "%s failed with %d\n", __func__, res);206 }207 return res;208}209 210static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg)211{212 int i;213 u8 data[3], tmp;214 215 data[0] = phy;216 data[1] = data[2] = 0;217 tmp = indx | PHY_READ | PHY_GO;218 i = 0;219 220 set_registers(dev, PHYADD, sizeof(data), data);221 set_registers(dev, PHYCNT, 1, &tmp);222 do {223 get_registers(dev, PHYCNT, 1, data);224 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));225 226 if (i <= MII_TIMEOUT) {227 get_registers(dev, PHYDAT, 2, data);228 *reg = data[0] | (data[1] << 8);229 return 0;230 } else231 return 1;232}233 234static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg)235{236 int i;237 u8 data[3], tmp;238 239 data[0] = phy;240 data[1] = reg & 0xff;241 data[2] = (reg >> 8) & 0xff;242 tmp = indx | PHY_WRITE | PHY_GO;243 i = 0;244 245 set_registers(dev, PHYADD, sizeof(data), data);246 set_registers(dev, PHYCNT, 1, &tmp);247 do {248 get_registers(dev, PHYCNT, 1, data);249 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));250 251 if (i <= MII_TIMEOUT)252 return 0;253 else254 return 1;255}256 257static void set_ethernet_addr(rtl8150_t *dev)258{259 u8 node_id[ETH_ALEN];260 int ret;261 262 ret = get_registers(dev, IDR, sizeof(node_id), node_id);263 264 if (!ret) {265 eth_hw_addr_set(dev->netdev, node_id);266 } else {267 eth_hw_addr_random(dev->netdev);268 netdev_notice(dev->netdev, "Assigned a random MAC address: %pM\n",269 dev->netdev->dev_addr);270 }271}272 273static int rtl8150_set_mac_address(struct net_device *netdev, void *p)274{275 struct sockaddr *addr = p;276 rtl8150_t *dev = netdev_priv(netdev);277 278 if (netif_running(netdev))279 return -EBUSY;280 281 eth_hw_addr_set(netdev, addr->sa_data);282 netdev_dbg(netdev, "Setting MAC address to %pM\n", netdev->dev_addr);283 /* Set the IDR registers. */284 set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr);285#ifdef EEPROM_WRITE286 {287 int i;288 u8 cr;289 /* Get the CR contents. */290 get_registers(dev, CR, 1, &cr);291 /* Set the WEPROM bit (eeprom write enable). */292 cr |= 0x20;293 set_registers(dev, CR, 1, &cr);294 /* Write the MAC address into eeprom. Eeprom writes must be word-sized,295 so we need to split them up. */296 for (i = 0; i * 2 < netdev->addr_len; i++) {297 set_registers(dev, IDR_EEPROM + (i * 2), 2,298 netdev->dev_addr + (i * 2));299 }300 /* Clear the WEPROM bit (preventing accidental eeprom writes). */301 cr &= 0xdf;302 set_registers(dev, CR, 1, &cr);303 }304#endif305 return 0;306}307 308static int rtl8150_reset(rtl8150_t * dev)309{310 u8 data = 0x10;311 int i = HZ;312 313 set_registers(dev, CR, 1, &data);314 do {315 get_registers(dev, CR, 1, &data);316 } while ((data & 0x10) && --i);317 318 return (i > 0) ? 1 : 0;319}320 321static int alloc_all_urbs(rtl8150_t * dev)322{323 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);324 if (!dev->rx_urb)325 return 0;326 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);327 if (!dev->tx_urb) {328 usb_free_urb(dev->rx_urb);329 return 0;330 }331 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);332 if (!dev->intr_urb) {333 usb_free_urb(dev->rx_urb);334 usb_free_urb(dev->tx_urb);335 return 0;336 }337 338 return 1;339}340 341static void free_all_urbs(rtl8150_t * dev)342{343 usb_free_urb(dev->rx_urb);344 usb_free_urb(dev->tx_urb);345 usb_free_urb(dev->intr_urb);346}347 348static void unlink_all_urbs(rtl8150_t * dev)349{350 usb_kill_urb(dev->rx_urb);351 usb_kill_urb(dev->tx_urb);352 usb_kill_urb(dev->intr_urb);353}354 355static inline struct sk_buff *pull_skb(rtl8150_t *dev)356{357 struct sk_buff *skb;358 int i;359 360 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {361 if (dev->rx_skb_pool[i]) {362 skb = dev->rx_skb_pool[i];363 dev->rx_skb_pool[i] = NULL;364 return skb;365 }366 }367 return NULL;368}369 370static void read_bulk_callback(struct urb *urb)371{372 rtl8150_t *dev;373 unsigned pkt_len, res;374 struct sk_buff *skb;375 struct net_device *netdev;376 int status = urb->status;377 int result;378 unsigned long flags;379 380 dev = urb->context;381 if (!dev)382 return;383 if (test_bit(RTL8150_UNPLUG, &dev->flags))384 return;385 netdev = dev->netdev;386 if (!netif_device_present(netdev))387 return;388 389 switch (status) {390 case 0:391 break;392 case -ENOENT:393 return; /* the urb is in unlink state */394 case -ETIME:395 if (printk_ratelimit())396 dev_warn(&urb->dev->dev, "may be reset is needed?..\n");397 goto goon;398 default:399 if (printk_ratelimit())400 dev_warn(&urb->dev->dev, "Rx status %d\n", status);401 goto goon;402 }403 404 if (!dev->rx_skb)405 goto resched;406 /* protect against short packets (tell me why we got some?!?) */407 if (urb->actual_length < 4)408 goto goon;409 410 res = urb->actual_length;411 pkt_len = res - 4;412 413 skb_put(dev->rx_skb, pkt_len);414 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev);415 netif_rx(dev->rx_skb);416 netdev->stats.rx_packets++;417 netdev->stats.rx_bytes += pkt_len;418 419 spin_lock_irqsave(&dev->rx_pool_lock, flags);420 skb = pull_skb(dev);421 spin_unlock_irqrestore(&dev->rx_pool_lock, flags);422 if (!skb)423 goto resched;424 425 dev->rx_skb = skb;426goon:427 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),428 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);429 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC);430 if (result == -ENODEV)431 netif_device_detach(dev->netdev);432 else if (result) {433 set_bit(RX_URB_FAIL, &dev->flags);434 goto resched;435 } else {436 clear_bit(RX_URB_FAIL, &dev->flags);437 }438 439 return;440resched:441 tasklet_schedule(&dev->tl);442}443 444static void write_bulk_callback(struct urb *urb)445{446 rtl8150_t *dev;447 int status = urb->status;448 449 dev = urb->context;450 if (!dev)451 return;452 dev_kfree_skb_irq(dev->tx_skb);453 if (!netif_device_present(dev->netdev))454 return;455 if (status)456 dev_info(&urb->dev->dev, "%s: Tx status %d\n",457 dev->netdev->name, status);458 netif_trans_update(dev->netdev);459 netif_wake_queue(dev->netdev);460}461 462static void intr_callback(struct urb *urb)463{464 rtl8150_t *dev;465 __u8 *d;466 int status = urb->status;467 int res;468 469 dev = urb->context;470 if (!dev)471 return;472 switch (status) {473 case 0: /* success */474 break;475 case -ECONNRESET: /* unlink */476 case -ENOENT:477 case -ESHUTDOWN:478 return;479 /* -EPIPE: should clear the halt */480 default:481 dev_info(&urb->dev->dev, "%s: intr status %d\n",482 dev->netdev->name, status);483 goto resubmit;484 }485 486 d = urb->transfer_buffer;487 if (d[0] & TSR_ERRORS) {488 dev->netdev->stats.tx_errors++;489 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR))490 dev->netdev->stats.tx_aborted_errors++;491 if (d[INT_TSR] & TSR_LCOL)492 dev->netdev->stats.tx_window_errors++;493 if (d[INT_TSR] & TSR_LOSS_CRS)494 dev->netdev->stats.tx_carrier_errors++;495 }496 /* Report link status changes to the network stack */497 if ((d[INT_MSR] & MSR_LINK) == 0) {498 if (netif_carrier_ok(dev->netdev)) {499 netif_carrier_off(dev->netdev);500 netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__);501 }502 } else {503 if (!netif_carrier_ok(dev->netdev)) {504 netif_carrier_on(dev->netdev);505 netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__);506 }507 }508 509resubmit:510 res = usb_submit_urb (urb, GFP_ATOMIC);511 if (res == -ENODEV)512 netif_device_detach(dev->netdev);513 else if (res)514 dev_err(&dev->udev->dev,515 "can't resubmit intr, %s-%s/input0, status %d\n",516 dev->udev->bus->bus_name, dev->udev->devpath, res);517}518 519static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message)520{521 rtl8150_t *dev = usb_get_intfdata(intf);522 523 netif_device_detach(dev->netdev);524 525 if (netif_running(dev->netdev)) {526 usb_kill_urb(dev->rx_urb);527 usb_kill_urb(dev->intr_urb);528 }529 return 0;530}531 532static int rtl8150_resume(struct usb_interface *intf)533{534 rtl8150_t *dev = usb_get_intfdata(intf);535 536 netif_device_attach(dev->netdev);537 if (netif_running(dev->netdev)) {538 dev->rx_urb->status = 0;539 dev->rx_urb->actual_length = 0;540 read_bulk_callback(dev->rx_urb);541 542 dev->intr_urb->status = 0;543 dev->intr_urb->actual_length = 0;544 intr_callback(dev->intr_urb);545 }546 return 0;547}548 549/*550**551** network related part of the code552**553*/554 555static void fill_skb_pool(rtl8150_t *dev)556{557 struct sk_buff *skb;558 int i;559 560 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {561 if (dev->rx_skb_pool[i])562 continue;563 skb = dev_alloc_skb(RTL8150_MTU + 2);564 if (!skb) {565 return;566 }567 skb_reserve(skb, 2);568 dev->rx_skb_pool[i] = skb;569 }570}571 572static void free_skb_pool(rtl8150_t *dev)573{574 int i;575 576 for (i = 0; i < RX_SKB_POOL_SIZE; i++)577 dev_kfree_skb(dev->rx_skb_pool[i]);578}579 580static void rx_fixup(struct tasklet_struct *t)581{582 struct rtl8150 *dev = from_tasklet(dev, t, tl);583 struct sk_buff *skb;584 int status;585 586 spin_lock_irq(&dev->rx_pool_lock);587 fill_skb_pool(dev);588 spin_unlock_irq(&dev->rx_pool_lock);589 if (test_bit(RX_URB_FAIL, &dev->flags))590 if (dev->rx_skb)591 goto try_again;592 spin_lock_irq(&dev->rx_pool_lock);593 skb = pull_skb(dev);594 spin_unlock_irq(&dev->rx_pool_lock);595 if (skb == NULL)596 goto tlsched;597 dev->rx_skb = skb;598 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),599 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);600try_again:601 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC);602 if (status == -ENODEV) {603 netif_device_detach(dev->netdev);604 } else if (status) {605 set_bit(RX_URB_FAIL, &dev->flags);606 goto tlsched;607 } else {608 clear_bit(RX_URB_FAIL, &dev->flags);609 }610 611 return;612tlsched:613 tasklet_schedule(&dev->tl);614}615 616static int enable_net_traffic(rtl8150_t * dev)617{618 u8 cr, tcr, rcr, msr;619 620 if (!rtl8150_reset(dev)) {621 dev_warn(&dev->udev->dev, "device reset failed\n");622 }623 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */624 rcr = 0x9e;625 tcr = 0xd8;626 cr = 0x0c;627 if (!(rcr & 0x80))628 set_bit(RTL8150_HW_CRC, &dev->flags);629 set_registers(dev, RCR, 1, &rcr);630 set_registers(dev, TCR, 1, &tcr);631 set_registers(dev, CR, 1, &cr);632 get_registers(dev, MSR, 1, &msr);633 634 return 0;635}636 637static void disable_net_traffic(rtl8150_t * dev)638{639 u8 cr;640 641 get_registers(dev, CR, 1, &cr);642 cr &= 0xf3;643 set_registers(dev, CR, 1, &cr);644}645 646static void rtl8150_tx_timeout(struct net_device *netdev, unsigned int txqueue)647{648 rtl8150_t *dev = netdev_priv(netdev);649 dev_warn(&netdev->dev, "Tx timeout.\n");650 usb_unlink_urb(dev->tx_urb);651 netdev->stats.tx_errors++;652}653 654static void rtl8150_set_multicast(struct net_device *netdev)655{656 rtl8150_t *dev = netdev_priv(netdev);657 u16 rx_creg = 0x9e;658 659 netif_stop_queue(netdev);660 if (netdev->flags & IFF_PROMISC) {661 rx_creg |= 0x0001;662 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name);663 } else if (!netdev_mc_empty(netdev) ||664 (netdev->flags & IFF_ALLMULTI)) {665 rx_creg &= 0xfffe;666 rx_creg |= 0x0002;667 dev_dbg(&netdev->dev, "%s: allmulti set\n", netdev->name);668 } else {669 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */670 rx_creg &= 0x00fc;671 }672 async_set_registers(dev, RCR, sizeof(rx_creg), rx_creg);673 netif_wake_queue(netdev);674}675 676static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb,677 struct net_device *netdev)678{679 rtl8150_t *dev = netdev_priv(netdev);680 int count, res;681 682 netif_stop_queue(netdev);683 count = (skb->len < 60) ? 60 : skb->len;684 count = (count & 0x3f) ? count : count + 1;685 dev->tx_skb = skb;686 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2),687 skb->data, count, write_bulk_callback, dev);688 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) {689 /* Can we get/handle EPIPE here? */690 if (res == -ENODEV)691 netif_device_detach(dev->netdev);692 else {693 dev_warn(&netdev->dev, "failed tx_urb %d\n", res);694 netdev->stats.tx_errors++;695 netif_start_queue(netdev);696 }697 } else {698 netdev->stats.tx_packets++;699 netdev->stats.tx_bytes += skb->len;700 netif_trans_update(netdev);701 }702 703 return NETDEV_TX_OK;704}705 706 707static void set_carrier(struct net_device *netdev)708{709 rtl8150_t *dev = netdev_priv(netdev);710 short tmp;711 712 get_registers(dev, CSCR, 2, &tmp);713 if (tmp & CSCR_LINK_STATUS)714 netif_carrier_on(netdev);715 else716 netif_carrier_off(netdev);717}718 719static int rtl8150_open(struct net_device *netdev)720{721 rtl8150_t *dev = netdev_priv(netdev);722 int res;723 724 if (dev->rx_skb == NULL)725 dev->rx_skb = pull_skb(dev);726 if (!dev->rx_skb)727 return -ENOMEM;728 729 set_registers(dev, IDR, 6, netdev->dev_addr);730 731 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),732 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);733 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) {734 if (res == -ENODEV)735 netif_device_detach(dev->netdev);736 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res);737 return res;738 }739 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3),740 dev->intr_buff, INTBUFSIZE, intr_callback,741 dev, dev->intr_interval);742 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) {743 if (res == -ENODEV)744 netif_device_detach(dev->netdev);745 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res);746 usb_kill_urb(dev->rx_urb);747 return res;748 }749 enable_net_traffic(dev);750 set_carrier(netdev);751 netif_start_queue(netdev);752 753 return res;754}755 756static int rtl8150_close(struct net_device *netdev)757{758 rtl8150_t *dev = netdev_priv(netdev);759 760 netif_stop_queue(netdev);761 if (!test_bit(RTL8150_UNPLUG, &dev->flags))762 disable_net_traffic(dev);763 unlink_all_urbs(dev);764 765 return 0;766}767 768static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)769{770 rtl8150_t *dev = netdev_priv(netdev);771 772 strscpy(info->driver, driver_name, sizeof(info->driver));773 strscpy(info->version, DRIVER_VERSION, sizeof(info->version));774 usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info));775}776 777static int rtl8150_get_link_ksettings(struct net_device *netdev,778 struct ethtool_link_ksettings *ecmd)779{780 rtl8150_t *dev = netdev_priv(netdev);781 short lpa = 0;782 short bmcr = 0;783 u32 supported;784 785 supported = (SUPPORTED_10baseT_Half |786 SUPPORTED_10baseT_Full |787 SUPPORTED_100baseT_Half |788 SUPPORTED_100baseT_Full |789 SUPPORTED_Autoneg |790 SUPPORTED_TP | SUPPORTED_MII);791 ecmd->base.port = PORT_TP;792 ecmd->base.phy_address = dev->phy;793 get_registers(dev, BMCR, 2, &bmcr);794 get_registers(dev, ANLP, 2, &lpa);795 if (bmcr & BMCR_ANENABLE) {796 u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ?797 SPEED_100 : SPEED_10);798 ecmd->base.speed = speed;799 ecmd->base.autoneg = AUTONEG_ENABLE;800 if (speed == SPEED_100)801 ecmd->base.duplex = (lpa & LPA_100FULL) ?802 DUPLEX_FULL : DUPLEX_HALF;803 else804 ecmd->base.duplex = (lpa & LPA_10FULL) ?805 DUPLEX_FULL : DUPLEX_HALF;806 } else {807 ecmd->base.autoneg = AUTONEG_DISABLE;808 ecmd->base.speed = ((bmcr & BMCR_SPEED100) ?809 SPEED_100 : SPEED_10);810 ecmd->base.duplex = (bmcr & BMCR_FULLDPLX) ?811 DUPLEX_FULL : DUPLEX_HALF;812 }813 814 ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.supported,815 supported);816 817 return 0;818}819 820static const struct ethtool_ops ops = {821 .get_drvinfo = rtl8150_get_drvinfo,822 .get_link = ethtool_op_get_link,823 .get_link_ksettings = rtl8150_get_link_ksettings,824};825 826static int rtl8150_siocdevprivate(struct net_device *netdev, struct ifreq *rq,827 void __user *udata, int cmd)828{829 rtl8150_t *dev = netdev_priv(netdev);830 u16 *data = (u16 *) & rq->ifr_ifru;831 int res = 0;832 833 switch (cmd) {834 case SIOCDEVPRIVATE:835 data[0] = dev->phy;836 fallthrough;837 case SIOCDEVPRIVATE + 1:838 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]);839 break;840 case SIOCDEVPRIVATE + 2:841 if (!capable(CAP_NET_ADMIN))842 return -EPERM;843 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]);844 break;845 default:846 res = -EOPNOTSUPP;847 }848 849 return res;850}851 852static const struct net_device_ops rtl8150_netdev_ops = {853 .ndo_open = rtl8150_open,854 .ndo_stop = rtl8150_close,855 .ndo_siocdevprivate = rtl8150_siocdevprivate,856 .ndo_start_xmit = rtl8150_start_xmit,857 .ndo_tx_timeout = rtl8150_tx_timeout,858 .ndo_set_rx_mode = rtl8150_set_multicast,859 .ndo_set_mac_address = rtl8150_set_mac_address,860 861 .ndo_validate_addr = eth_validate_addr,862};863 864static int rtl8150_probe(struct usb_interface *intf,865 const struct usb_device_id *id)866{867 struct usb_device *udev = interface_to_usbdev(intf);868 rtl8150_t *dev;869 struct net_device *netdev;870 871 netdev = alloc_etherdev(sizeof(rtl8150_t));872 if (!netdev)873 return -ENOMEM;874 875 dev = netdev_priv(netdev);876 877 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL);878 if (!dev->intr_buff) {879 free_netdev(netdev);880 return -ENOMEM;881 }882 883 tasklet_setup(&dev->tl, rx_fixup);884 spin_lock_init(&dev->rx_pool_lock);885 886 dev->udev = udev;887 dev->netdev = netdev;888 netdev->netdev_ops = &rtl8150_netdev_ops;889 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT;890 netdev->ethtool_ops = &ops;891 dev->intr_interval = 100; /* 100ms */892 893 if (!alloc_all_urbs(dev)) {894 dev_err(&intf->dev, "out of memory\n");895 goto out;896 }897 if (!rtl8150_reset(dev)) {898 dev_err(&intf->dev, "couldn't reset the device\n");899 goto out1;900 }901 fill_skb_pool(dev);902 set_ethernet_addr(dev);903 904 usb_set_intfdata(intf, dev);905 SET_NETDEV_DEV(netdev, &intf->dev);906 if (register_netdev(netdev) != 0) {907 dev_err(&intf->dev, "couldn't register the device\n");908 goto out2;909 }910 911 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name);912 913 return 0;914 915out2:916 usb_set_intfdata(intf, NULL);917 free_skb_pool(dev);918out1:919 free_all_urbs(dev);920out:921 kfree(dev->intr_buff);922 free_netdev(netdev);923 return -EIO;924}925 926static void rtl8150_disconnect(struct usb_interface *intf)927{928 rtl8150_t *dev = usb_get_intfdata(intf);929 930 usb_set_intfdata(intf, NULL);931 if (dev) {932 set_bit(RTL8150_UNPLUG, &dev->flags);933 tasklet_kill(&dev->tl);934 unregister_netdev(dev->netdev);935 unlink_all_urbs(dev);936 free_all_urbs(dev);937 free_skb_pool(dev);938 dev_kfree_skb(dev->rx_skb);939 kfree(dev->intr_buff);940 free_netdev(dev->netdev);941 }942}943 944static 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 .disable_hub_initiated_lpm = 1,952};953 954module_usb_driver(rtl8150_driver);955 956MODULE_AUTHOR(DRIVER_AUTHOR);957MODULE_DESCRIPTION(DRIVER_DESC);958MODULE_LICENSE("GPL");959