1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 1999-2013 Petko Manolov (petkan@nucleusys.com)
6 * .... Most of the time spent on reading sources & docs.
7 * v0.2.x First official release for the Linux kernel.
8 * v0.3.0 Beutified and structured, some bugs fixed.
9 * v0.3.x URBifying bulk requests and bugfixing. First relatively
10 * stable release. Still can touch device's registers only
12 * v0.4.0 Control messages remained unurbified are now URBs.
13 * Now we can touch the HW at any time.
14 * v0.4.9 Control urbs again use process context to wait. Argh...
15 * Some long standing bugs (enable_net_traffic) fixed.
16 * Also nasty trick about resubmiting control urb from
17 * interrupt context used. Please let me know how it
18 * behaves. Pegasus II support added since this version.
19 * TODO: suppressing HCD warnings spewage on disconnect.
20 * v0.4.13 Ethernet address is now set at probe(), not at open()
21 * time as this seems to break dhcpd.
22 * v0.5.0 branch to 2.5.x kernels
23 * v0.5.1 ethtool support added
24 * v0.5.5 rx socket buffers are in a pool and the their allocation
25 * is out of the interrupt routine.
27 * v0.9.3 simplified [get|set]_register(s), async update registers
28 * logic revisited, receive skb_pool removed.
31 #include <linux/sched.h>
32 #include <linux/slab.h>
33 #include <linux/init.h>
34 #include <linux/delay.h>
35 #include <linux/netdevice.h>
36 #include <linux/etherdevice.h>
37 #include <linux/ethtool.h>
38 #include <linux/mii.h>
39 #include <linux/usb.h>
40 #include <linux/module.h>
41 #include <asm/byteorder.h>
42 #include <linux/uaccess.h>
48 #define DRIVER_VERSION "v0.9.3 (2013/04/25)"
49 #define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>"
50 #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
52 static const char driver_name[] = "pegasus";
54 #undef PEGASUS_WRITE_EEPROM
55 #define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
56 BMSR_100FULL | BMSR_ANEGCAPABLE)
57 #define CARRIER_CHECK_DELAY (2 * HZ)
63 static struct usb_eth_dev usb_dev_id[] = {
64 #define PEGASUS_DEV(pn, vid, pid, flags) \
65 {.name = pn, .vendor = vid, .device = pid, .private = flags},
66 #define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
67 PEGASUS_DEV(pn, vid, pid, flags)
70 #undef PEGASUS_DEV_CLASS
75 static struct usb_device_id pegasus_ids[] = {
76 #define PEGASUS_DEV(pn, vid, pid, flags) \
77 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
79 * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product
80 * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to
81 * ignore adaptors belonging to the "Wireless" class 0xE0. For this one
82 * case anyway, seeing as the pegasus is for "Wired" adaptors.
84 #define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
85 {.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \
86 .idVendor = vid, .idProduct = pid, .bDeviceClass = dclass},
89 #undef PEGASUS_DEV_CLASS
94 MODULE_AUTHOR(DRIVER_AUTHOR);
95 MODULE_DESCRIPTION(DRIVER_DESC);
96 MODULE_LICENSE("GPL");
97 module_param(loopback, bool, 0);
98 module_param(mii_mode, bool, 0);
99 module_param(devid, charp, 0);
100 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
101 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
102 MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
104 /* use ethtool to change the level for any given device */
105 static int msg_level = -1;
106 module_param(msg_level, int, 0);
107 MODULE_PARM_DESC(msg_level, "Override default message level");
109 MODULE_DEVICE_TABLE(usb, pegasus_ids);
110 static const struct net_device_ops pegasus_netdev_ops;
114 static void async_ctrl_callback(struct urb *urb)
116 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
117 int status = urb->status;
120 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status);
125 static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data)
130 buf = kmalloc(size, GFP_NOIO);
134 ret = usb_control_msg(pegasus->usb, usb_rcvctrlpipe(pegasus->usb, 0),
135 PEGASUS_REQ_GET_REGS, PEGASUS_REQT_READ, 0,
136 indx, buf, size, 1000);
138 netif_dbg(pegasus, drv, pegasus->net,
139 "%s returned %d\n", __func__, ret);
140 else if (ret <= size)
141 memcpy(data, buf, ret);
146 static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
152 buf = kmemdup(data, size, GFP_NOIO);
156 ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
157 PEGASUS_REQ_SET_REGS, PEGASUS_REQT_WRITE, 0,
158 indx, buf, size, 100);
160 netif_dbg(pegasus, drv, pegasus->net,
161 "%s returned %d\n", __func__, ret);
166 static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data)
171 buf = kmemdup(&data, 1, GFP_NOIO);
175 ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
176 PEGASUS_REQ_SET_REG, PEGASUS_REQT_WRITE, data,
179 netif_dbg(pegasus, drv, pegasus->net,
180 "%s returned %d\n", __func__, ret);
185 static int update_eth_regs_async(pegasus_t *pegasus)
188 struct urb *async_urb;
189 struct usb_ctrlrequest *req;
191 req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
195 async_urb = usb_alloc_urb(0, GFP_ATOMIC);
196 if (async_urb == NULL) {
200 req->bRequestType = PEGASUS_REQT_WRITE;
201 req->bRequest = PEGASUS_REQ_SET_REGS;
202 req->wValue = cpu_to_le16(0);
203 req->wIndex = cpu_to_le16(EthCtrl0);
204 req->wLength = cpu_to_le16(3);
206 usb_fill_control_urb(async_urb, pegasus->usb,
207 usb_sndctrlpipe(pegasus->usb, 0), (void *)req,
208 pegasus->eth_regs, 3, async_ctrl_callback, req);
210 ret = usb_submit_urb(async_urb, GFP_ATOMIC);
213 netif_device_detach(pegasus->net);
214 netif_err(pegasus, drv, pegasus->net,
215 "%s returned %d\n", __func__, ret);
220 static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd)
223 __u8 data[4] = { phy, 0, 0, indx };
225 int ret = -ETIMEDOUT;
227 if (cmd & PHY_WRITE) {
228 __le16 *t = (__le16 *) & data[1];
229 *t = cpu_to_le16(*regd);
231 set_register(p, PhyCtrl, 0);
232 set_registers(p, PhyAddr, sizeof(data), data);
233 set_register(p, PhyCtrl, (indx | cmd));
234 for (i = 0; i < REG_TIMEOUT; i++) {
235 ret = get_registers(p, PhyCtrl, 1, data);
238 if (data[0] & PHY_DONE)
241 if (i >= REG_TIMEOUT)
243 if (cmd & PHY_READ) {
244 ret = get_registers(p, PhyData, 2, ®di);
245 *regd = le16_to_cpu(regdi);
250 netif_dbg(p, drv, p->net, "%s failed\n", __func__);
254 /* Returns non-negative int on success, error on failure */
255 static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
257 return __mii_op(pegasus, phy, indx, regd, PHY_READ);
260 /* Returns zero on success, error on failure */
261 static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
263 return __mii_op(pegasus, phy, indx, regd, PHY_WRITE);
266 static int mdio_read(struct net_device *dev, int phy_id, int loc)
268 pegasus_t *pegasus = netdev_priv(dev);
271 read_mii_word(pegasus, phy_id, loc, &res);
275 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
277 pegasus_t *pegasus = netdev_priv(dev);
280 write_mii_word(pegasus, phy_id, loc, &data);
283 static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
290 set_register(pegasus, EpromCtrl, 0);
291 set_register(pegasus, EpromOffset, index);
292 set_register(pegasus, EpromCtrl, EPROM_READ);
294 for (i = 0; i < REG_TIMEOUT; i++) {
295 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
296 if (tmp & EPROM_DONE)
298 if (ret == -ESHUTDOWN)
301 if (i >= REG_TIMEOUT)
304 ret = get_registers(pegasus, EpromData, 2, &retdatai);
305 *retdata = le16_to_cpu(retdatai);
309 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
313 #ifdef PEGASUS_WRITE_EEPROM
314 static inline void enable_eprom_write(pegasus_t *pegasus)
318 get_registers(pegasus, EthCtrl2, 1, &tmp);
319 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
322 static inline void disable_eprom_write(pegasus_t *pegasus)
326 get_registers(pegasus, EthCtrl2, 1, &tmp);
327 set_register(pegasus, EpromCtrl, 0);
328 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
331 static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
334 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
336 __le16 le_data = cpu_to_le16(data);
338 set_registers(pegasus, EpromOffset, 4, d);
339 enable_eprom_write(pegasus);
340 set_register(pegasus, EpromOffset, index);
341 set_registers(pegasus, EpromData, 2, &le_data);
342 set_register(pegasus, EpromCtrl, EPROM_WRITE);
344 for (i = 0; i < REG_TIMEOUT; i++) {
345 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
346 if (ret == -ESHUTDOWN)
348 if (tmp & EPROM_DONE)
351 disable_eprom_write(pegasus);
352 if (i >= REG_TIMEOUT)
358 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
361 #endif /* PEGASUS_WRITE_EEPROM */
363 static inline int get_node_id(pegasus_t *pegasus, u8 *id)
368 for (i = 0; i < 3; i++) {
369 ret = read_eprom_word(pegasus, i, &w16);
372 ((__le16 *) id)[i] = cpu_to_le16(w16);
378 static void set_ethernet_addr(pegasus_t *pegasus)
383 if (pegasus->features & PEGASUS_II) {
384 ret = get_registers(pegasus, 0x10, sizeof(node_id), node_id);
388 ret = get_node_id(pegasus, node_id);
391 ret = set_registers(pegasus, EthID, sizeof(node_id), node_id);
396 memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id));
400 eth_hw_addr_random(pegasus->net);
401 dev_info(&pegasus->intf->dev, "software assigned MAC address.\n");
406 static inline int reset_mac(pegasus_t *pegasus)
411 set_register(pegasus, EthCtrl1, data);
412 for (i = 0; i < REG_TIMEOUT; i++) {
413 get_registers(pegasus, EthCtrl1, 1, &data);
417 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
418 set_register(pegasus, Gpio1, 0x34);
420 set_register(pegasus, Gpio1, 0x26);
421 set_register(pegasus, Gpio0, pegasus->features);
422 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
426 if (i == REG_TIMEOUT)
429 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
430 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
431 set_register(pegasus, Gpio0, 0x24);
432 set_register(pegasus, Gpio0, 0x26);
434 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
436 read_mii_word(pegasus, 3, 0x1b, &auxmode);
438 write_mii_word(pegasus, 3, 0x1b, &auxmode);
444 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
448 pegasus_t *pegasus = netdev_priv(dev);
451 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
452 data[0] = 0xc8; /* TX & RX enable, append status, no CRC */
454 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
455 data[1] |= 0x20; /* set full duplex */
456 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
457 data[1] |= 0x10; /* set 100 Mbps */
460 data[2] = loopback ? 0x09 : 0x01;
462 memcpy(pegasus->eth_regs, data, sizeof(data));
463 ret = set_registers(pegasus, EthCtrl0, 3, data);
465 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
466 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
467 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
469 read_mii_word(pegasus, 0, 0x1b, &auxmode);
471 write_mii_word(pegasus, 0, 0x1b, &auxmode);
477 static void read_bulk_callback(struct urb *urb)
479 pegasus_t *pegasus = urb->context;
480 struct net_device *net;
481 int rx_status, count = urb->actual_length;
482 int status = urb->status;
483 u8 *buf = urb->transfer_buffer;
490 if (!netif_device_present(net) || !netif_running(net))
497 netif_dbg(pegasus, rx_err, net, "reset MAC\n");
498 pegasus->flags &= ~PEGASUS_RX_BUSY;
500 case -EPIPE: /* stall, or disconnect from TT */
501 /* FIXME schedule work to clear the halt */
502 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n");
507 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status);
510 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status);
517 rx_status = buf[count - 2];
518 if (rx_status & 0x1e) {
519 netif_dbg(pegasus, rx_err, net,
520 "RX packet error %x\n", rx_status);
521 net->stats.rx_errors++;
522 if (rx_status & 0x06) /* long or runt */
523 net->stats.rx_length_errors++;
524 if (rx_status & 0x08)
525 net->stats.rx_crc_errors++;
526 if (rx_status & 0x10) /* extra bits */
527 net->stats.rx_frame_errors++;
530 if (pegasus->chip == 0x8513) {
531 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
533 pegasus->rx_skb->data += 2;
535 pkt_len = buf[count - 3] << 8;
536 pkt_len += buf[count - 4];
542 * If the packet is unreasonably long, quietly drop it rather than
543 * kernel panicing by calling skb_put.
545 if (pkt_len > PEGASUS_MTU)
549 * at this point we are sure pegasus->rx_skb != NULL
550 * so we go ahead and pass up the packet.
552 skb_put(pegasus->rx_skb, pkt_len);
553 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
554 netif_rx(pegasus->rx_skb);
555 net->stats.rx_packets++;
556 net->stats.rx_bytes += pkt_len;
558 if (pegasus->flags & PEGASUS_UNPLUG)
561 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, PEGASUS_MTU,
564 if (pegasus->rx_skb == NULL)
567 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
568 usb_rcvbulkpipe(pegasus->usb, 1),
569 pegasus->rx_skb->data, PEGASUS_MTU,
570 read_bulk_callback, pegasus);
571 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
572 if (rx_status == -ENODEV)
573 netif_device_detach(pegasus->net);
574 else if (rx_status) {
575 pegasus->flags |= PEGASUS_RX_URB_FAIL;
578 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
584 tasklet_schedule(&pegasus->rx_tl);
587 static void rx_fixup(unsigned long data)
592 pegasus = (pegasus_t *) data;
593 if (pegasus->flags & PEGASUS_UNPLUG)
596 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
599 if (pegasus->rx_skb == NULL)
600 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
603 if (pegasus->rx_skb == NULL) {
604 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n");
605 tasklet_schedule(&pegasus->rx_tl);
608 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
609 usb_rcvbulkpipe(pegasus->usb, 1),
610 pegasus->rx_skb->data, PEGASUS_MTU,
611 read_bulk_callback, pegasus);
613 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
614 if (status == -ENODEV)
615 netif_device_detach(pegasus->net);
617 pegasus->flags |= PEGASUS_RX_URB_FAIL;
618 tasklet_schedule(&pegasus->rx_tl);
620 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
624 static void write_bulk_callback(struct urb *urb)
626 pegasus_t *pegasus = urb->context;
627 struct net_device *net;
628 int status = urb->status;
635 if (!netif_device_present(net) || !netif_running(net))
640 /* FIXME schedule_work() to clear the tx halt */
641 netif_stop_queue(net);
642 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n");
647 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status);
650 netif_info(pegasus, tx_err, net, "TX status %d\n", status);
656 netif_trans_update(net); /* prevent tx timeout */
657 netif_wake_queue(net);
660 static void intr_callback(struct urb *urb)
662 pegasus_t *pegasus = urb->context;
663 struct net_device *net;
664 int res, status = urb->status;
673 case -ECONNRESET: /* unlink */
678 /* some Pegasus-I products report LOTS of data
679 * toggle errors... avoid log spamming
681 netif_dbg(pegasus, timer, net, "intr status %d\n", status);
684 if (urb->actual_length >= 6) {
685 u8 *d = urb->transfer_buffer;
687 /* byte 0 == tx_status1, reg 2B */
688 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
689 |LATE_COL|JABBER_TIMEOUT)) {
690 net->stats.tx_errors++;
691 if (d[0] & TX_UNDERRUN)
692 net->stats.tx_fifo_errors++;
693 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
694 net->stats.tx_aborted_errors++;
696 net->stats.tx_window_errors++;
699 /* d[5].LINK_STATUS lies on some adapters.
700 * d[0].NO_CARRIER kicks in only with failed TX.
701 * ... so monitoring with MII may be safest.
704 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
705 net->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
708 res = usb_submit_urb(urb, GFP_ATOMIC);
710 netif_device_detach(pegasus->net);
712 netif_err(pegasus, timer, net,
713 "can't resubmit interrupt urb, %d\n", res);
716 static void pegasus_tx_timeout(struct net_device *net, unsigned int txqueue)
718 pegasus_t *pegasus = netdev_priv(net);
719 netif_warn(pegasus, timer, net, "tx timeout\n");
720 usb_unlink_urb(pegasus->tx_urb);
721 net->stats.tx_errors++;
724 static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
725 struct net_device *net)
727 pegasus_t *pegasus = netdev_priv(net);
728 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
730 __u16 l16 = skb->len;
732 netif_stop_queue(net);
734 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
735 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
736 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
737 usb_sndbulkpipe(pegasus->usb, 2),
738 pegasus->tx_buff, count,
739 write_bulk_callback, pegasus);
740 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
741 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res);
743 case -EPIPE: /* stall, or disconnect from TT */
744 /* cleanup should already have been scheduled */
746 case -ENODEV: /* disconnect() upcoming */
748 netif_device_detach(pegasus->net);
751 net->stats.tx_errors++;
752 netif_start_queue(net);
755 net->stats.tx_packets++;
756 net->stats.tx_bytes += skb->len;
763 static inline void disable_net_traffic(pegasus_t *pegasus)
765 __le16 tmp = cpu_to_le16(0);
767 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
770 static inline void get_interrupt_interval(pegasus_t *pegasus)
775 read_eprom_word(pegasus, 4, &data);
776 interval = data >> 8;
777 if (pegasus->usb->speed != USB_SPEED_HIGH) {
778 if (interval < 0x80) {
779 netif_info(pegasus, timer, pegasus->net,
780 "intr interval changed from %ums to %ums\n",
783 data = (data & 0x00FF) | ((u16)interval << 8);
784 #ifdef PEGASUS_WRITE_EEPROM
785 write_eprom_word(pegasus, 4, data);
789 pegasus->intr_interval = interval;
792 static void set_carrier(struct net_device *net)
794 pegasus_t *pegasus = netdev_priv(net);
797 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
800 if (tmp & BMSR_LSTATUS)
801 netif_carrier_on(net);
803 netif_carrier_off(net);
806 static void free_all_urbs(pegasus_t *pegasus)
808 usb_free_urb(pegasus->intr_urb);
809 usb_free_urb(pegasus->tx_urb);
810 usb_free_urb(pegasus->rx_urb);
813 static void unlink_all_urbs(pegasus_t *pegasus)
815 usb_kill_urb(pegasus->intr_urb);
816 usb_kill_urb(pegasus->tx_urb);
817 usb_kill_urb(pegasus->rx_urb);
820 static int alloc_urbs(pegasus_t *pegasus)
824 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
825 if (!pegasus->rx_urb) {
828 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
829 if (!pegasus->tx_urb) {
830 usb_free_urb(pegasus->rx_urb);
833 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
834 if (!pegasus->intr_urb) {
835 usb_free_urb(pegasus->tx_urb);
836 usb_free_urb(pegasus->rx_urb);
843 static int pegasus_open(struct net_device *net)
845 pegasus_t *pegasus = netdev_priv(net);
848 if (pegasus->rx_skb == NULL)
849 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
852 if (!pegasus->rx_skb)
855 res = set_registers(pegasus, EthID, 6, net->dev_addr);
857 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
858 usb_rcvbulkpipe(pegasus->usb, 1),
859 pegasus->rx_skb->data, PEGASUS_MTU,
860 read_bulk_callback, pegasus);
861 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
863 netif_device_detach(pegasus->net);
864 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res);
868 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
869 usb_rcvintpipe(pegasus->usb, 3),
870 pegasus->intr_buff, sizeof(pegasus->intr_buff),
871 intr_callback, pegasus, pegasus->intr_interval);
872 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
874 netif_device_detach(pegasus->net);
875 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res);
876 usb_kill_urb(pegasus->rx_urb);
879 res = enable_net_traffic(net, pegasus->usb);
881 netif_dbg(pegasus, ifup, net,
882 "can't enable_net_traffic() - %d\n", res);
884 usb_kill_urb(pegasus->rx_urb);
885 usb_kill_urb(pegasus->intr_urb);
889 netif_start_queue(net);
890 netif_dbg(pegasus, ifup, net, "open\n");
896 static int pegasus_close(struct net_device *net)
898 pegasus_t *pegasus = netdev_priv(net);
900 netif_stop_queue(net);
901 if (!(pegasus->flags & PEGASUS_UNPLUG))
902 disable_net_traffic(pegasus);
903 tasklet_kill(&pegasus->rx_tl);
904 unlink_all_urbs(pegasus);
909 static void pegasus_get_drvinfo(struct net_device *dev,
910 struct ethtool_drvinfo *info)
912 pegasus_t *pegasus = netdev_priv(dev);
914 strlcpy(info->driver, driver_name, sizeof(info->driver));
915 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
916 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info));
919 /* also handles three patterns of some kind in hardware */
920 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
923 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
925 pegasus_t *pegasus = netdev_priv(dev);
927 wol->supported = WAKE_MAGIC | WAKE_PHY;
928 wol->wolopts = pegasus->wolopts;
932 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
934 pegasus_t *pegasus = netdev_priv(dev);
938 if (wol->wolopts & ~WOL_SUPPORTED)
941 if (wol->wolopts & WAKE_MAGIC)
943 if (wol->wolopts & WAKE_PHY)
945 /* FIXME this 0x10 bit still needs to get set in the chip... */
947 pegasus->eth_regs[0] |= 0x10;
949 pegasus->eth_regs[0] &= ~0x10;
950 pegasus->wolopts = wol->wolopts;
952 ret = set_register(pegasus, WakeupControl, reg78);
954 ret = device_set_wakeup_enable(&pegasus->usb->dev,
959 static inline void pegasus_reset_wol(struct net_device *dev)
961 struct ethtool_wolinfo wol;
963 memset(&wol, 0, sizeof wol);
964 (void) pegasus_set_wol(dev, &wol);
968 pegasus_get_link_ksettings(struct net_device *dev,
969 struct ethtool_link_ksettings *ecmd)
973 pegasus = netdev_priv(dev);
974 mii_ethtool_get_link_ksettings(&pegasus->mii, ecmd);
979 pegasus_set_link_ksettings(struct net_device *dev,
980 const struct ethtool_link_ksettings *ecmd)
982 pegasus_t *pegasus = netdev_priv(dev);
983 return mii_ethtool_set_link_ksettings(&pegasus->mii, ecmd);
986 static int pegasus_nway_reset(struct net_device *dev)
988 pegasus_t *pegasus = netdev_priv(dev);
989 return mii_nway_restart(&pegasus->mii);
992 static u32 pegasus_get_link(struct net_device *dev)
994 pegasus_t *pegasus = netdev_priv(dev);
995 return mii_link_ok(&pegasus->mii);
998 static u32 pegasus_get_msglevel(struct net_device *dev)
1000 pegasus_t *pegasus = netdev_priv(dev);
1001 return pegasus->msg_enable;
1004 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1006 pegasus_t *pegasus = netdev_priv(dev);
1007 pegasus->msg_enable = v;
1010 static const struct ethtool_ops ops = {
1011 .get_drvinfo = pegasus_get_drvinfo,
1012 .nway_reset = pegasus_nway_reset,
1013 .get_link = pegasus_get_link,
1014 .get_msglevel = pegasus_get_msglevel,
1015 .set_msglevel = pegasus_set_msglevel,
1016 .get_wol = pegasus_get_wol,
1017 .set_wol = pegasus_set_wol,
1018 .get_link_ksettings = pegasus_get_link_ksettings,
1019 .set_link_ksettings = pegasus_set_link_ksettings,
1022 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1024 __u16 *data = (__u16 *) &rq->ifr_ifru;
1025 pegasus_t *pegasus = netdev_priv(net);
1029 case SIOCDEVPRIVATE:
1030 data[0] = pegasus->phy;
1032 case SIOCDEVPRIVATE + 1:
1033 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1036 case SIOCDEVPRIVATE + 2:
1037 if (!capable(CAP_NET_ADMIN))
1039 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, &data[2]);
1048 static void pegasus_set_multicast(struct net_device *net)
1050 pegasus_t *pegasus = netdev_priv(net);
1052 if (net->flags & IFF_PROMISC) {
1053 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1054 netif_info(pegasus, link, net, "Promiscuous mode enabled\n");
1055 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1056 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1057 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1058 netif_dbg(pegasus, link, net, "set allmulti\n");
1060 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1061 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1063 update_eth_regs_async(pegasus);
1066 static __u8 mii_phy_probe(pegasus_t *pegasus)
1071 for (i = 0; i < 32; i++) {
1072 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1073 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1082 static inline void setup_pegasus_II(pegasus_t *pegasus)
1086 set_register(pegasus, Reg1d, 0);
1087 set_register(pegasus, Reg7b, 1);
1089 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1090 set_register(pegasus, Reg7b, 0);
1092 set_register(pegasus, Reg7b, 2);
1094 set_register(pegasus, 0x83, data);
1095 get_registers(pegasus, 0x83, 1, &data);
1098 pegasus->chip = 0x8513;
1102 set_register(pegasus, 0x80, 0xc0);
1103 set_register(pegasus, 0x83, 0xff);
1104 set_register(pegasus, 0x84, 0x01);
1106 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1107 set_register(pegasus, Reg81, 6);
1109 set_register(pegasus, Reg81, 2);
1112 static void check_carrier(struct work_struct *work)
1114 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1115 set_carrier(pegasus->net);
1116 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1117 queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1118 CARRIER_CHECK_DELAY);
1122 static int pegasus_blacklisted(struct usb_device *udev)
1124 struct usb_device_descriptor *udd = &udev->descriptor;
1126 /* Special quirk to keep the driver from handling the Belkin Bluetooth
1127 * dongle which happens to have the same ID.
1129 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
1130 (udd->idProduct == cpu_to_le16(0x0121)) &&
1131 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1132 (udd->bDeviceProtocol == 1))
1138 static int pegasus_probe(struct usb_interface *intf,
1139 const struct usb_device_id *id)
1141 struct usb_device *dev = interface_to_usbdev(intf);
1142 struct net_device *net;
1144 int dev_index = id - pegasus_ids;
1147 if (pegasus_blacklisted(dev))
1150 net = alloc_etherdev(sizeof(struct pegasus));
1154 pegasus = netdev_priv(net);
1155 pegasus->dev_index = dev_index;
1157 res = alloc_urbs(pegasus);
1159 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1163 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1165 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1167 pegasus->intf = intf;
1172 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1173 net->netdev_ops = &pegasus_netdev_ops;
1174 net->ethtool_ops = &ops;
1175 pegasus->mii.dev = net;
1176 pegasus->mii.mdio_read = mdio_read;
1177 pegasus->mii.mdio_write = mdio_write;
1178 pegasus->mii.phy_id_mask = 0x1f;
1179 pegasus->mii.reg_num_mask = 0x1f;
1180 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
1181 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1183 pegasus->features = usb_dev_id[dev_index].private;
1184 get_interrupt_interval(pegasus);
1185 if (reset_mac(pegasus)) {
1186 dev_err(&intf->dev, "can't reset MAC\n");
1190 set_ethernet_addr(pegasus);
1191 if (pegasus->features & PEGASUS_II) {
1192 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1193 setup_pegasus_II(pegasus);
1195 pegasus->phy = mii_phy_probe(pegasus);
1196 if (pegasus->phy == 0xff) {
1197 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1200 pegasus->mii.phy_id = pegasus->phy;
1201 usb_set_intfdata(intf, pegasus);
1202 SET_NETDEV_DEV(net, &intf->dev);
1203 pegasus_reset_wol(net);
1204 res = register_netdev(net);
1207 queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1208 CARRIER_CHECK_DELAY);
1209 dev_info(&intf->dev, "%s, %s, %pM\n", net->name,
1210 usb_dev_id[dev_index].name, net->dev_addr);
1214 usb_set_intfdata(intf, NULL);
1216 free_all_urbs(pegasus);
1223 static void pegasus_disconnect(struct usb_interface *intf)
1225 struct pegasus *pegasus = usb_get_intfdata(intf);
1227 usb_set_intfdata(intf, NULL);
1229 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1233 pegasus->flags |= PEGASUS_UNPLUG;
1234 cancel_delayed_work_sync(&pegasus->carrier_check);
1235 unregister_netdev(pegasus->net);
1236 unlink_all_urbs(pegasus);
1237 free_all_urbs(pegasus);
1238 if (pegasus->rx_skb != NULL) {
1239 dev_kfree_skb(pegasus->rx_skb);
1240 pegasus->rx_skb = NULL;
1242 free_netdev(pegasus->net);
1245 static int pegasus_suspend(struct usb_interface *intf, pm_message_t message)
1247 struct pegasus *pegasus = usb_get_intfdata(intf);
1249 netif_device_detach(pegasus->net);
1250 cancel_delayed_work_sync(&pegasus->carrier_check);
1251 if (netif_running(pegasus->net)) {
1252 usb_kill_urb(pegasus->rx_urb);
1253 usb_kill_urb(pegasus->intr_urb);
1258 static int pegasus_resume(struct usb_interface *intf)
1260 struct pegasus *pegasus = usb_get_intfdata(intf);
1262 netif_device_attach(pegasus->net);
1263 if (netif_running(pegasus->net)) {
1264 pegasus->rx_urb->status = 0;
1265 pegasus->rx_urb->actual_length = 0;
1266 read_bulk_callback(pegasus->rx_urb);
1268 pegasus->intr_urb->status = 0;
1269 pegasus->intr_urb->actual_length = 0;
1270 intr_callback(pegasus->intr_urb);
1272 queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1273 CARRIER_CHECK_DELAY);
1277 static const struct net_device_ops pegasus_netdev_ops = {
1278 .ndo_open = pegasus_open,
1279 .ndo_stop = pegasus_close,
1280 .ndo_do_ioctl = pegasus_ioctl,
1281 .ndo_start_xmit = pegasus_start_xmit,
1282 .ndo_set_rx_mode = pegasus_set_multicast,
1283 .ndo_tx_timeout = pegasus_tx_timeout,
1284 .ndo_set_mac_address = eth_mac_addr,
1285 .ndo_validate_addr = eth_validate_addr,
1288 static struct usb_driver pegasus_driver = {
1289 .name = driver_name,
1290 .probe = pegasus_probe,
1291 .disconnect = pegasus_disconnect,
1292 .id_table = pegasus_ids,
1293 .suspend = pegasus_suspend,
1294 .resume = pegasus_resume,
1295 .disable_hub_initiated_lpm = 1,
1298 static void __init parse_id(char *id)
1300 unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0;
1301 char *token, *name = NULL;
1303 if ((token = strsep(&id, ":")) != NULL)
1305 /* name now points to a null terminated string*/
1306 if ((token = strsep(&id, ":")) != NULL)
1307 vendor_id = simple_strtoul(token, NULL, 16);
1308 if ((token = strsep(&id, ":")) != NULL)
1309 device_id = simple_strtoul(token, NULL, 16);
1310 flags = simple_strtoul(id, NULL, 16);
1311 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1312 driver_name, name, vendor_id, device_id, flags);
1314 if (vendor_id > 0x10000 || vendor_id == 0)
1316 if (device_id > 0x10000 || device_id == 0)
1319 for (i = 0; usb_dev_id[i].name; i++);
1320 usb_dev_id[i].name = name;
1321 usb_dev_id[i].vendor = vendor_id;
1322 usb_dev_id[i].device = device_id;
1323 usb_dev_id[i].private = flags;
1324 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1325 pegasus_ids[i].idVendor = vendor_id;
1326 pegasus_ids[i].idProduct = device_id;
1329 static int __init pegasus_init(void)
1331 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1334 return usb_register(&pegasus_driver);
1337 static void __exit pegasus_exit(void)
1339 usb_deregister(&pegasus_driver);
1342 module_init(pegasus_init);
1343 module_exit(pegasus_exit);