2 * Copyright (c) 1999-2013 Petko Manolov (petkan@nucleusys.com)
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
9 * .... Most of the time spent on reading sources & docs.
10 * v0.2.x First official release for the Linux kernel.
11 * v0.3.0 Beutified and structured, some bugs fixed.
12 * v0.3.x URBifying bulk requests and bugfixing. First relatively
13 * stable release. Still can touch device's registers only
15 * v0.4.0 Control messages remained unurbified are now URBs.
16 * Now we can touch the HW at any time.
17 * v0.4.9 Control urbs again use process context to wait. Argh...
18 * Some long standing bugs (enable_net_traffic) fixed.
19 * Also nasty trick about resubmiting control urb from
20 * interrupt context used. Please let me know how it
21 * behaves. Pegasus II support added since this version.
22 * TODO: suppressing HCD warnings spewage on disconnect.
23 * v0.4.13 Ethernet address is now set at probe(), not at open()
24 * time as this seems to break dhcpd.
25 * v0.5.0 branch to 2.5.x kernels
26 * v0.5.1 ethtool support added
27 * v0.5.5 rx socket buffers are in a pool and the their allocation
28 * is out of the interrupt routine.
30 * v0.9.3 simplified [get|set]_register(s), async update registers
31 * logic revisited, receive skb_pool removed.
34 #include <linux/sched.h>
35 #include <linux/slab.h>
36 #include <linux/init.h>
37 #include <linux/delay.h>
38 #include <linux/netdevice.h>
39 #include <linux/etherdevice.h>
40 #include <linux/ethtool.h>
41 #include <linux/mii.h>
42 #include <linux/usb.h>
43 #include <linux/module.h>
44 #include <asm/byteorder.h>
45 #include <linux/uaccess.h>
51 #define DRIVER_VERSION "v0.9.3 (2013/04/25)"
52 #define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>"
53 #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
55 static const char driver_name[] = "pegasus";
57 #undef PEGASUS_WRITE_EEPROM
58 #define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
59 BMSR_100FULL | BMSR_ANEGCAPABLE)
65 static struct usb_eth_dev usb_dev_id[] = {
66 #define PEGASUS_DEV(pn, vid, pid, flags) \
67 {.name = pn, .vendor = vid, .device = pid, .private = flags},
68 #define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
69 PEGASUS_DEV(pn, vid, pid, flags)
72 #undef PEGASUS_DEV_CLASS
77 static struct usb_device_id pegasus_ids[] = {
78 #define PEGASUS_DEV(pn, vid, pid, flags) \
79 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
81 * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product
82 * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to
83 * ignore adaptors belonging to the "Wireless" class 0xE0. For this one
84 * case anyway, seeing as the pegasus is for "Wired" adaptors.
86 #define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
87 {.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \
88 .idVendor = vid, .idProduct = pid, .bDeviceClass = dclass},
91 #undef PEGASUS_DEV_CLASS
96 MODULE_AUTHOR(DRIVER_AUTHOR);
97 MODULE_DESCRIPTION(DRIVER_DESC);
98 MODULE_LICENSE("GPL");
99 module_param(loopback, bool, 0);
100 module_param(mii_mode, bool, 0);
101 module_param(devid, charp, 0);
102 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
103 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
104 MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
106 /* use ethtool to change the level for any given device */
107 static int msg_level = -1;
108 module_param(msg_level, int, 0);
109 MODULE_PARM_DESC(msg_level, "Override default message level");
111 MODULE_DEVICE_TABLE(usb, pegasus_ids);
112 static const struct net_device_ops pegasus_netdev_ops;
116 static void async_ctrl_callback(struct urb *urb)
118 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
119 int status = urb->status;
122 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status);
127 static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data)
132 buf = kmalloc(size, GFP_NOIO);
136 ret = usb_control_msg(pegasus->usb, usb_rcvctrlpipe(pegasus->usb, 0),
137 PEGASUS_REQ_GET_REGS, PEGASUS_REQT_READ, 0,
138 indx, buf, size, 1000);
140 netif_dbg(pegasus, drv, pegasus->net,
141 "%s returned %d\n", __func__, ret);
142 else if (ret <= size)
143 memcpy(data, buf, ret);
148 static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
154 buf = kmemdup(data, size, GFP_NOIO);
158 ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
159 PEGASUS_REQ_SET_REGS, PEGASUS_REQT_WRITE, 0,
160 indx, buf, size, 100);
162 netif_dbg(pegasus, drv, pegasus->net,
163 "%s returned %d\n", __func__, ret);
168 static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data)
173 buf = kmemdup(&data, 1, GFP_NOIO);
177 ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
178 PEGASUS_REQ_SET_REG, PEGASUS_REQT_WRITE, data,
181 netif_dbg(pegasus, drv, pegasus->net,
182 "%s returned %d\n", __func__, ret);
187 static int update_eth_regs_async(pegasus_t *pegasus)
190 struct urb *async_urb;
191 struct usb_ctrlrequest *req;
193 req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
197 async_urb = usb_alloc_urb(0, GFP_ATOMIC);
198 if (async_urb == NULL) {
202 req->bRequestType = PEGASUS_REQT_WRITE;
203 req->bRequest = PEGASUS_REQ_SET_REGS;
204 req->wValue = cpu_to_le16(0);
205 req->wIndex = cpu_to_le16(EthCtrl0);
206 req->wLength = cpu_to_le16(3);
208 usb_fill_control_urb(async_urb, pegasus->usb,
209 usb_sndctrlpipe(pegasus->usb, 0), (void *)req,
210 pegasus->eth_regs, 3, async_ctrl_callback, req);
212 ret = usb_submit_urb(async_urb, GFP_ATOMIC);
215 netif_device_detach(pegasus->net);
216 netif_err(pegasus, drv, pegasus->net,
217 "%s returned %d\n", __func__, ret);
222 static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd)
225 __u8 data[4] = { phy, 0, 0, indx };
227 int ret = -ETIMEDOUT;
229 if (cmd & PHY_WRITE) {
230 __le16 *t = (__le16 *) & data[1];
231 *t = cpu_to_le16(*regd);
233 set_register(p, PhyCtrl, 0);
234 set_registers(p, PhyAddr, sizeof(data), data);
235 set_register(p, PhyCtrl, (indx | cmd));
236 for (i = 0; i < REG_TIMEOUT; i++) {
237 ret = get_registers(p, PhyCtrl, 1, data);
240 if (data[0] & PHY_DONE)
243 if (i >= REG_TIMEOUT)
245 if (cmd & PHY_READ) {
246 ret = get_registers(p, PhyData, 2, ®di);
247 *regd = le16_to_cpu(regdi);
252 netif_dbg(p, drv, p->net, "%s failed\n", __func__);
256 /* Returns non-negative int on success, error on failure */
257 static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
259 return __mii_op(pegasus, phy, indx, regd, PHY_READ);
262 /* Returns zero on success, error on failure */
263 static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
265 return __mii_op(pegasus, phy, indx, regd, PHY_WRITE);
268 static int mdio_read(struct net_device *dev, int phy_id, int loc)
270 pegasus_t *pegasus = netdev_priv(dev);
273 read_mii_word(pegasus, phy_id, loc, &res);
277 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
279 pegasus_t *pegasus = netdev_priv(dev);
282 write_mii_word(pegasus, phy_id, loc, &data);
285 static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
292 set_register(pegasus, EpromCtrl, 0);
293 set_register(pegasus, EpromOffset, index);
294 set_register(pegasus, EpromCtrl, EPROM_READ);
296 for (i = 0; i < REG_TIMEOUT; i++) {
297 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
298 if (tmp & EPROM_DONE)
300 if (ret == -ESHUTDOWN)
303 if (i >= REG_TIMEOUT)
306 ret = get_registers(pegasus, EpromData, 2, &retdatai);
307 *retdata = le16_to_cpu(retdatai);
311 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
315 #ifdef PEGASUS_WRITE_EEPROM
316 static inline void enable_eprom_write(pegasus_t *pegasus)
320 get_registers(pegasus, EthCtrl2, 1, &tmp);
321 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
324 static inline void disable_eprom_write(pegasus_t *pegasus)
328 get_registers(pegasus, EthCtrl2, 1, &tmp);
329 set_register(pegasus, EpromCtrl, 0);
330 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
333 static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
336 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
338 __le16 le_data = cpu_to_le16(data);
340 set_registers(pegasus, EpromOffset, 4, d);
341 enable_eprom_write(pegasus);
342 set_register(pegasus, EpromOffset, index);
343 set_registers(pegasus, EpromData, 2, &le_data);
344 set_register(pegasus, EpromCtrl, EPROM_WRITE);
346 for (i = 0; i < REG_TIMEOUT; i++) {
347 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
348 if (ret == -ESHUTDOWN)
350 if (tmp & EPROM_DONE)
353 disable_eprom_write(pegasus);
354 if (i >= REG_TIMEOUT)
360 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
363 #endif /* PEGASUS_WRITE_EEPROM */
365 static inline void get_node_id(pegasus_t *pegasus, __u8 *id)
370 for (i = 0; i < 3; i++) {
371 read_eprom_word(pegasus, i, &w16);
372 ((__le16 *) id)[i] = cpu_to_le16(w16);
376 static void set_ethernet_addr(pegasus_t *pegasus)
380 if (pegasus->features & PEGASUS_II) {
381 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
383 get_node_id(pegasus, node_id);
384 set_registers(pegasus, EthID, sizeof(node_id), node_id);
386 memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id));
389 static inline int reset_mac(pegasus_t *pegasus)
394 set_register(pegasus, EthCtrl1, data);
395 for (i = 0; i < REG_TIMEOUT; i++) {
396 get_registers(pegasus, EthCtrl1, 1, &data);
400 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
401 set_register(pegasus, Gpio1, 0x34);
403 set_register(pegasus, Gpio1, 0x26);
404 set_register(pegasus, Gpio0, pegasus->features);
405 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
409 if (i == REG_TIMEOUT)
412 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
413 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
414 set_register(pegasus, Gpio0, 0x24);
415 set_register(pegasus, Gpio0, 0x26);
417 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
419 read_mii_word(pegasus, 3, 0x1b, &auxmode);
421 write_mii_word(pegasus, 3, 0x1b, &auxmode);
427 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
431 pegasus_t *pegasus = netdev_priv(dev);
434 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
435 data[0] = 0xc8; /* TX & RX enable, append status, no CRC */
437 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
438 data[1] |= 0x20; /* set full duplex */
439 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
440 data[1] |= 0x10; /* set 100 Mbps */
443 data[2] = loopback ? 0x09 : 0x01;
445 memcpy(pegasus->eth_regs, data, sizeof(data));
446 ret = set_registers(pegasus, EthCtrl0, 3, data);
448 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
449 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
450 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
452 read_mii_word(pegasus, 0, 0x1b, &auxmode);
454 write_mii_word(pegasus, 0, 0x1b, &auxmode);
460 static void read_bulk_callback(struct urb *urb)
462 pegasus_t *pegasus = urb->context;
463 struct net_device *net;
464 int rx_status, count = urb->actual_length;
465 int status = urb->status;
466 u8 *buf = urb->transfer_buffer;
473 if (!netif_device_present(net) || !netif_running(net))
480 netif_dbg(pegasus, rx_err, net, "reset MAC\n");
481 pegasus->flags &= ~PEGASUS_RX_BUSY;
483 case -EPIPE: /* stall, or disconnect from TT */
484 /* FIXME schedule work to clear the halt */
485 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n");
490 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status);
493 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status);
500 rx_status = buf[count - 2];
501 if (rx_status & 0x1e) {
502 netif_dbg(pegasus, rx_err, net,
503 "RX packet error %x\n", rx_status);
504 net->stats.rx_errors++;
505 if (rx_status & 0x06) /* long or runt */
506 net->stats.rx_length_errors++;
507 if (rx_status & 0x08)
508 net->stats.rx_crc_errors++;
509 if (rx_status & 0x10) /* extra bits */
510 net->stats.rx_frame_errors++;
513 if (pegasus->chip == 0x8513) {
514 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
516 pegasus->rx_skb->data += 2;
518 pkt_len = buf[count - 3] << 8;
519 pkt_len += buf[count - 4];
525 * If the packet is unreasonably long, quietly drop it rather than
526 * kernel panicing by calling skb_put.
528 if (pkt_len > PEGASUS_MTU)
532 * at this point we are sure pegasus->rx_skb != NULL
533 * so we go ahead and pass up the packet.
535 skb_put(pegasus->rx_skb, pkt_len);
536 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
537 netif_rx(pegasus->rx_skb);
538 net->stats.rx_packets++;
539 net->stats.rx_bytes += pkt_len;
541 if (pegasus->flags & PEGASUS_UNPLUG)
544 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, PEGASUS_MTU,
547 if (pegasus->rx_skb == NULL)
550 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
551 usb_rcvbulkpipe(pegasus->usb, 1),
552 pegasus->rx_skb->data, PEGASUS_MTU,
553 read_bulk_callback, pegasus);
554 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
555 if (rx_status == -ENODEV)
556 netif_device_detach(pegasus->net);
557 else if (rx_status) {
558 pegasus->flags |= PEGASUS_RX_URB_FAIL;
561 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
567 tasklet_schedule(&pegasus->rx_tl);
570 static void rx_fixup(unsigned long data)
575 pegasus = (pegasus_t *) data;
576 if (pegasus->flags & PEGASUS_UNPLUG)
579 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
582 if (pegasus->rx_skb == NULL)
583 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
586 if (pegasus->rx_skb == NULL) {
587 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n");
588 tasklet_schedule(&pegasus->rx_tl);
591 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
592 usb_rcvbulkpipe(pegasus->usb, 1),
593 pegasus->rx_skb->data, PEGASUS_MTU,
594 read_bulk_callback, pegasus);
596 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
597 if (status == -ENODEV)
598 netif_device_detach(pegasus->net);
600 pegasus->flags |= PEGASUS_RX_URB_FAIL;
601 tasklet_schedule(&pegasus->rx_tl);
603 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
607 static void write_bulk_callback(struct urb *urb)
609 pegasus_t *pegasus = urb->context;
610 struct net_device *net;
611 int status = urb->status;
618 if (!netif_device_present(net) || !netif_running(net))
623 /* FIXME schedule_work() to clear the tx halt */
624 netif_stop_queue(net);
625 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n");
630 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status);
633 netif_info(pegasus, tx_err, net, "TX status %d\n", status);
639 netif_trans_update(net); /* prevent tx timeout */
640 netif_wake_queue(net);
643 static void intr_callback(struct urb *urb)
645 pegasus_t *pegasus = urb->context;
646 struct net_device *net;
647 int res, status = urb->status;
656 case -ECONNRESET: /* unlink */
661 /* some Pegasus-I products report LOTS of data
662 * toggle errors... avoid log spamming
664 netif_dbg(pegasus, timer, net, "intr status %d\n", status);
667 if (urb->actual_length >= 6) {
668 u8 *d = urb->transfer_buffer;
670 /* byte 0 == tx_status1, reg 2B */
671 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
672 |LATE_COL|JABBER_TIMEOUT)) {
673 net->stats.tx_errors++;
674 if (d[0] & TX_UNDERRUN)
675 net->stats.tx_fifo_errors++;
676 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
677 net->stats.tx_aborted_errors++;
679 net->stats.tx_window_errors++;
682 /* d[5].LINK_STATUS lies on some adapters.
683 * d[0].NO_CARRIER kicks in only with failed TX.
684 * ... so monitoring with MII may be safest.
687 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
688 net->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
691 res = usb_submit_urb(urb, GFP_ATOMIC);
693 netif_device_detach(pegasus->net);
695 netif_err(pegasus, timer, net,
696 "can't resubmit interrupt urb, %d\n", res);
699 static void pegasus_tx_timeout(struct net_device *net)
701 pegasus_t *pegasus = netdev_priv(net);
702 netif_warn(pegasus, timer, net, "tx timeout\n");
703 usb_unlink_urb(pegasus->tx_urb);
704 net->stats.tx_errors++;
707 static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
708 struct net_device *net)
710 pegasus_t *pegasus = netdev_priv(net);
711 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
713 __u16 l16 = skb->len;
715 netif_stop_queue(net);
717 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
718 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
719 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
720 usb_sndbulkpipe(pegasus->usb, 2),
721 pegasus->tx_buff, count,
722 write_bulk_callback, pegasus);
723 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
724 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res);
726 case -EPIPE: /* stall, or disconnect from TT */
727 /* cleanup should already have been scheduled */
729 case -ENODEV: /* disconnect() upcoming */
731 netif_device_detach(pegasus->net);
734 net->stats.tx_errors++;
735 netif_start_queue(net);
738 net->stats.tx_packets++;
739 net->stats.tx_bytes += skb->len;
746 static inline void disable_net_traffic(pegasus_t *pegasus)
748 __le16 tmp = cpu_to_le16(0);
750 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
753 static inline int get_interrupt_interval(pegasus_t *pegasus)
759 ret = read_eprom_word(pegasus, 4, &data);
763 interval = data >> 8;
764 if (pegasus->usb->speed != USB_SPEED_HIGH) {
765 if (interval < 0x80) {
766 netif_info(pegasus, timer, pegasus->net,
767 "intr interval changed from %ums to %ums\n",
770 data = (data & 0x00FF) | ((u16)interval << 8);
771 #ifdef PEGASUS_WRITE_EEPROM
772 write_eprom_word(pegasus, 4, data);
776 pegasus->intr_interval = interval;
781 static void set_carrier(struct net_device *net)
783 pegasus_t *pegasus = netdev_priv(net);
786 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
789 if (tmp & BMSR_LSTATUS)
790 netif_carrier_on(net);
792 netif_carrier_off(net);
795 static void free_all_urbs(pegasus_t *pegasus)
797 usb_free_urb(pegasus->intr_urb);
798 usb_free_urb(pegasus->tx_urb);
799 usb_free_urb(pegasus->rx_urb);
802 static void unlink_all_urbs(pegasus_t *pegasus)
804 usb_kill_urb(pegasus->intr_urb);
805 usb_kill_urb(pegasus->tx_urb);
806 usb_kill_urb(pegasus->rx_urb);
809 static int alloc_urbs(pegasus_t *pegasus)
813 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
814 if (!pegasus->rx_urb) {
817 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
818 if (!pegasus->tx_urb) {
819 usb_free_urb(pegasus->rx_urb);
822 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
823 if (!pegasus->intr_urb) {
824 usb_free_urb(pegasus->tx_urb);
825 usb_free_urb(pegasus->rx_urb);
832 static int pegasus_open(struct net_device *net)
834 pegasus_t *pegasus = netdev_priv(net);
837 if (pegasus->rx_skb == NULL)
838 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
841 if (!pegasus->rx_skb)
844 res = set_registers(pegasus, EthID, 6, net->dev_addr);
846 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
847 usb_rcvbulkpipe(pegasus->usb, 1),
848 pegasus->rx_skb->data, PEGASUS_MTU,
849 read_bulk_callback, pegasus);
850 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
852 netif_device_detach(pegasus->net);
853 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res);
857 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
858 usb_rcvintpipe(pegasus->usb, 3),
859 pegasus->intr_buff, sizeof(pegasus->intr_buff),
860 intr_callback, pegasus, pegasus->intr_interval);
861 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
863 netif_device_detach(pegasus->net);
864 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res);
865 usb_kill_urb(pegasus->rx_urb);
868 res = enable_net_traffic(net, pegasus->usb);
870 netif_dbg(pegasus, ifup, net,
871 "can't enable_net_traffic() - %d\n", res);
873 usb_kill_urb(pegasus->rx_urb);
874 usb_kill_urb(pegasus->intr_urb);
878 netif_start_queue(net);
879 netif_dbg(pegasus, ifup, net, "open\n");
885 static int pegasus_close(struct net_device *net)
887 pegasus_t *pegasus = netdev_priv(net);
889 netif_stop_queue(net);
890 if (!(pegasus->flags & PEGASUS_UNPLUG))
891 disable_net_traffic(pegasus);
892 tasklet_kill(&pegasus->rx_tl);
893 unlink_all_urbs(pegasus);
898 static void pegasus_get_drvinfo(struct net_device *dev,
899 struct ethtool_drvinfo *info)
901 pegasus_t *pegasus = netdev_priv(dev);
903 strlcpy(info->driver, driver_name, sizeof(info->driver));
904 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
905 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info));
908 /* also handles three patterns of some kind in hardware */
909 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
912 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
914 pegasus_t *pegasus = netdev_priv(dev);
916 wol->supported = WAKE_MAGIC | WAKE_PHY;
917 wol->wolopts = pegasus->wolopts;
921 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
923 pegasus_t *pegasus = netdev_priv(dev);
927 if (wol->wolopts & ~WOL_SUPPORTED)
930 if (wol->wolopts & WAKE_MAGIC)
932 if (wol->wolopts & WAKE_PHY)
934 /* FIXME this 0x10 bit still needs to get set in the chip... */
936 pegasus->eth_regs[0] |= 0x10;
938 pegasus->eth_regs[0] &= ~0x10;
939 pegasus->wolopts = wol->wolopts;
941 ret = set_register(pegasus, WakeupControl, reg78);
943 ret = device_set_wakeup_enable(&pegasus->usb->dev,
948 static inline void pegasus_reset_wol(struct net_device *dev)
950 struct ethtool_wolinfo wol;
952 memset(&wol, 0, sizeof wol);
953 (void) pegasus_set_wol(dev, &wol);
957 pegasus_get_link_ksettings(struct net_device *dev,
958 struct ethtool_link_ksettings *ecmd)
962 pegasus = netdev_priv(dev);
963 mii_ethtool_get_link_ksettings(&pegasus->mii, ecmd);
968 pegasus_set_link_ksettings(struct net_device *dev,
969 const struct ethtool_link_ksettings *ecmd)
971 pegasus_t *pegasus = netdev_priv(dev);
972 return mii_ethtool_set_link_ksettings(&pegasus->mii, ecmd);
975 static int pegasus_nway_reset(struct net_device *dev)
977 pegasus_t *pegasus = netdev_priv(dev);
978 return mii_nway_restart(&pegasus->mii);
981 static u32 pegasus_get_link(struct net_device *dev)
983 pegasus_t *pegasus = netdev_priv(dev);
984 return mii_link_ok(&pegasus->mii);
987 static u32 pegasus_get_msglevel(struct net_device *dev)
989 pegasus_t *pegasus = netdev_priv(dev);
990 return pegasus->msg_enable;
993 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
995 pegasus_t *pegasus = netdev_priv(dev);
996 pegasus->msg_enable = v;
999 static const struct ethtool_ops ops = {
1000 .get_drvinfo = pegasus_get_drvinfo,
1001 .nway_reset = pegasus_nway_reset,
1002 .get_link = pegasus_get_link,
1003 .get_msglevel = pegasus_get_msglevel,
1004 .set_msglevel = pegasus_set_msglevel,
1005 .get_wol = pegasus_get_wol,
1006 .set_wol = pegasus_set_wol,
1007 .get_link_ksettings = pegasus_get_link_ksettings,
1008 .set_link_ksettings = pegasus_set_link_ksettings,
1011 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1013 __u16 *data = (__u16 *) &rq->ifr_ifru;
1014 pegasus_t *pegasus = netdev_priv(net);
1018 case SIOCDEVPRIVATE:
1019 data[0] = pegasus->phy;
1020 case SIOCDEVPRIVATE + 1:
1021 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1024 case SIOCDEVPRIVATE + 2:
1025 if (!capable(CAP_NET_ADMIN))
1027 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, &data[2]);
1036 static void pegasus_set_multicast(struct net_device *net)
1038 pegasus_t *pegasus = netdev_priv(net);
1040 if (net->flags & IFF_PROMISC) {
1041 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1042 netif_info(pegasus, link, net, "Promiscuous mode enabled\n");
1043 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1044 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1045 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1046 netif_dbg(pegasus, link, net, "set allmulti\n");
1048 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1049 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1051 update_eth_regs_async(pegasus);
1054 static __u8 mii_phy_probe(pegasus_t *pegasus)
1059 for (i = 0; i < 32; i++) {
1060 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1061 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1070 static inline void setup_pegasus_II(pegasus_t *pegasus)
1074 set_register(pegasus, Reg1d, 0);
1075 set_register(pegasus, Reg7b, 1);
1077 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1078 set_register(pegasus, Reg7b, 0);
1080 set_register(pegasus, Reg7b, 2);
1082 set_register(pegasus, 0x83, data);
1083 get_registers(pegasus, 0x83, 1, &data);
1086 pegasus->chip = 0x8513;
1090 set_register(pegasus, 0x80, 0xc0);
1091 set_register(pegasus, 0x83, 0xff);
1092 set_register(pegasus, 0x84, 0x01);
1094 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1095 set_register(pegasus, Reg81, 6);
1097 set_register(pegasus, Reg81, 2);
1101 static int pegasus_count;
1102 static struct workqueue_struct *pegasus_workqueue;
1103 #define CARRIER_CHECK_DELAY (2 * HZ)
1105 static void check_carrier(struct work_struct *work)
1107 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1108 set_carrier(pegasus->net);
1109 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1110 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1111 CARRIER_CHECK_DELAY);
1115 static int pegasus_blacklisted(struct usb_device *udev)
1117 struct usb_device_descriptor *udd = &udev->descriptor;
1119 /* Special quirk to keep the driver from handling the Belkin Bluetooth
1120 * dongle which happens to have the same ID.
1122 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
1123 (udd->idProduct == cpu_to_le16(0x0121)) &&
1124 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1125 (udd->bDeviceProtocol == 1))
1131 /* we rely on probe() and remove() being serialized so we
1132 * don't need extra locking on pegasus_count.
1134 static void pegasus_dec_workqueue(void)
1137 if (pegasus_count == 0) {
1138 destroy_workqueue(pegasus_workqueue);
1139 pegasus_workqueue = NULL;
1143 static int pegasus_probe(struct usb_interface *intf,
1144 const struct usb_device_id *id)
1146 struct usb_device *dev = interface_to_usbdev(intf);
1147 struct net_device *net;
1149 int dev_index = id - pegasus_ids;
1152 if (pegasus_blacklisted(dev))
1155 if (pegasus_count == 0) {
1156 pegasus_workqueue = alloc_workqueue("pegasus", WQ_MEM_RECLAIM,
1158 if (!pegasus_workqueue)
1163 net = alloc_etherdev(sizeof(struct pegasus));
1167 pegasus = netdev_priv(net);
1168 pegasus->dev_index = dev_index;
1170 res = alloc_urbs(pegasus);
1172 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1176 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1178 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1180 pegasus->intf = intf;
1185 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1186 net->netdev_ops = &pegasus_netdev_ops;
1187 net->ethtool_ops = &ops;
1188 pegasus->mii.dev = net;
1189 pegasus->mii.mdio_read = mdio_read;
1190 pegasus->mii.mdio_write = mdio_write;
1191 pegasus->mii.phy_id_mask = 0x1f;
1192 pegasus->mii.reg_num_mask = 0x1f;
1193 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
1194 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1196 pegasus->features = usb_dev_id[dev_index].private;
1197 res = get_interrupt_interval(pegasus);
1200 if (reset_mac(pegasus)) {
1201 dev_err(&intf->dev, "can't reset MAC\n");
1205 set_ethernet_addr(pegasus);
1206 if (pegasus->features & PEGASUS_II) {
1207 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1208 setup_pegasus_II(pegasus);
1210 pegasus->phy = mii_phy_probe(pegasus);
1211 if (pegasus->phy == 0xff) {
1212 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1215 pegasus->mii.phy_id = pegasus->phy;
1216 usb_set_intfdata(intf, pegasus);
1217 SET_NETDEV_DEV(net, &intf->dev);
1218 pegasus_reset_wol(net);
1219 res = register_netdev(net);
1222 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1223 CARRIER_CHECK_DELAY);
1224 dev_info(&intf->dev, "%s, %s, %pM\n", net->name,
1225 usb_dev_id[dev_index].name, net->dev_addr);
1229 usb_set_intfdata(intf, NULL);
1231 free_all_urbs(pegasus);
1235 pegasus_dec_workqueue();
1239 static void pegasus_disconnect(struct usb_interface *intf)
1241 struct pegasus *pegasus = usb_get_intfdata(intf);
1243 usb_set_intfdata(intf, NULL);
1245 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1249 pegasus->flags |= PEGASUS_UNPLUG;
1250 cancel_delayed_work(&pegasus->carrier_check);
1251 unregister_netdev(pegasus->net);
1252 unlink_all_urbs(pegasus);
1253 free_all_urbs(pegasus);
1254 if (pegasus->rx_skb != NULL) {
1255 dev_kfree_skb(pegasus->rx_skb);
1256 pegasus->rx_skb = NULL;
1258 free_netdev(pegasus->net);
1259 pegasus_dec_workqueue();
1262 static int pegasus_suspend(struct usb_interface *intf, pm_message_t message)
1264 struct pegasus *pegasus = usb_get_intfdata(intf);
1266 netif_device_detach(pegasus->net);
1267 cancel_delayed_work(&pegasus->carrier_check);
1268 if (netif_running(pegasus->net)) {
1269 usb_kill_urb(pegasus->rx_urb);
1270 usb_kill_urb(pegasus->intr_urb);
1275 static int pegasus_resume(struct usb_interface *intf)
1277 struct pegasus *pegasus = usb_get_intfdata(intf);
1279 netif_device_attach(pegasus->net);
1280 if (netif_running(pegasus->net)) {
1281 pegasus->rx_urb->status = 0;
1282 pegasus->rx_urb->actual_length = 0;
1283 read_bulk_callback(pegasus->rx_urb);
1285 pegasus->intr_urb->status = 0;
1286 pegasus->intr_urb->actual_length = 0;
1287 intr_callback(pegasus->intr_urb);
1289 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1290 CARRIER_CHECK_DELAY);
1294 static const struct net_device_ops pegasus_netdev_ops = {
1295 .ndo_open = pegasus_open,
1296 .ndo_stop = pegasus_close,
1297 .ndo_do_ioctl = pegasus_ioctl,
1298 .ndo_start_xmit = pegasus_start_xmit,
1299 .ndo_set_rx_mode = pegasus_set_multicast,
1300 .ndo_tx_timeout = pegasus_tx_timeout,
1301 .ndo_set_mac_address = eth_mac_addr,
1302 .ndo_validate_addr = eth_validate_addr,
1305 static struct usb_driver pegasus_driver = {
1306 .name = driver_name,
1307 .probe = pegasus_probe,
1308 .disconnect = pegasus_disconnect,
1309 .id_table = pegasus_ids,
1310 .suspend = pegasus_suspend,
1311 .resume = pegasus_resume,
1312 .disable_hub_initiated_lpm = 1,
1315 static void __init parse_id(char *id)
1317 unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0;
1318 char *token, *name = NULL;
1320 if ((token = strsep(&id, ":")) != NULL)
1322 /* name now points to a null terminated string*/
1323 if ((token = strsep(&id, ":")) != NULL)
1324 vendor_id = simple_strtoul(token, NULL, 16);
1325 if ((token = strsep(&id, ":")) != NULL)
1326 device_id = simple_strtoul(token, NULL, 16);
1327 flags = simple_strtoul(id, NULL, 16);
1328 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1329 driver_name, name, vendor_id, device_id, flags);
1331 if (vendor_id > 0x10000 || vendor_id == 0)
1333 if (device_id > 0x10000 || device_id == 0)
1336 for (i = 0; usb_dev_id[i].name; i++);
1337 usb_dev_id[i].name = name;
1338 usb_dev_id[i].vendor = vendor_id;
1339 usb_dev_id[i].device = device_id;
1340 usb_dev_id[i].private = flags;
1341 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1342 pegasus_ids[i].idVendor = vendor_id;
1343 pegasus_ids[i].idProduct = device_id;
1346 static int __init pegasus_init(void)
1348 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1351 return usb_register(&pegasus_driver);
1354 static void __exit pegasus_exit(void)
1356 usb_deregister(&pegasus_driver);
1359 module_init(pegasus_init);
1360 module_exit(pegasus_exit);