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)
127 return usb_control_msg_recv(pegasus->usb, 0, PEGASUS_REQ_GET_REGS,
128 PEGASUS_REQT_READ, 0, indx, data, size,
132 static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
137 ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REGS,
138 PEGASUS_REQT_WRITE, 0, indx, data, size,
141 netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret);
147 * There is only one way to write to a single ADM8511 register and this is via
148 * specific control request. 'data' is ignored by the device, but it is here to
151 static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data)
156 ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REG,
157 PEGASUS_REQT_WRITE, data, indx, buf, 1,
160 netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret);
165 static int update_eth_regs_async(pegasus_t *pegasus)
168 struct urb *async_urb;
169 struct usb_ctrlrequest *req;
171 req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
175 async_urb = usb_alloc_urb(0, GFP_ATOMIC);
176 if (async_urb == NULL) {
180 req->bRequestType = PEGASUS_REQT_WRITE;
181 req->bRequest = PEGASUS_REQ_SET_REGS;
182 req->wValue = cpu_to_le16(0);
183 req->wIndex = cpu_to_le16(EthCtrl0);
184 req->wLength = cpu_to_le16(3);
186 usb_fill_control_urb(async_urb, pegasus->usb,
187 usb_sndctrlpipe(pegasus->usb, 0), (void *)req,
188 pegasus->eth_regs, 3, async_ctrl_callback, req);
190 ret = usb_submit_urb(async_urb, GFP_ATOMIC);
193 netif_device_detach(pegasus->net);
194 netif_err(pegasus, drv, pegasus->net,
195 "%s returned %d\n", __func__, ret);
200 static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd)
204 __u8 data[4] = { phy, 0, 0, indx };
206 if (cmd & PHY_WRITE) {
207 __le16 *t = (__le16 *) & data[1];
208 *t = cpu_to_le16(*regd);
210 set_register(p, PhyCtrl, 0);
211 set_registers(p, PhyAddr, sizeof(data), data);
212 set_register(p, PhyCtrl, (indx | cmd));
213 for (i = 0; i < REG_TIMEOUT; i++) {
214 ret = get_registers(p, PhyCtrl, 1, data);
217 if (data[0] & PHY_DONE)
220 if (i >= REG_TIMEOUT) {
224 if (cmd & PHY_READ) {
225 ret = get_registers(p, PhyData, 2, ®di);
228 *regd = le16_to_cpu(regdi);
232 netif_dbg(p, drv, p->net, "%s failed\n", __func__);
236 /* Returns non-negative int on success, error on failure */
237 static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
239 return __mii_op(pegasus, phy, indx, regd, PHY_READ);
242 /* Returns zero on success, error on failure */
243 static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
245 return __mii_op(pegasus, phy, indx, regd, PHY_WRITE);
248 static int mdio_read(struct net_device *dev, int phy_id, int loc)
250 pegasus_t *pegasus = netdev_priv(dev);
254 ret = read_mii_word(pegasus, phy_id, loc, &res);
261 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
263 pegasus_t *pegasus = netdev_priv(dev);
266 write_mii_word(pegasus, phy_id, loc, &data);
269 static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
275 set_register(pegasus, EpromCtrl, 0);
276 set_register(pegasus, EpromOffset, index);
277 set_register(pegasus, EpromCtrl, EPROM_READ);
279 for (i = 0; i < REG_TIMEOUT; i++) {
280 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
283 if (tmp & EPROM_DONE)
286 if (i >= REG_TIMEOUT) {
291 ret = get_registers(pegasus, EpromData, 2, &retdatai);
294 *retdata = le16_to_cpu(retdatai);
298 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
302 #ifdef PEGASUS_WRITE_EEPROM
303 static inline void enable_eprom_write(pegasus_t *pegasus)
307 get_registers(pegasus, EthCtrl2, 1, &tmp);
308 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
311 static inline void disable_eprom_write(pegasus_t *pegasus)
315 get_registers(pegasus, EthCtrl2, 1, &tmp);
316 set_register(pegasus, EpromCtrl, 0);
317 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
320 static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
323 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
325 __le16 le_data = cpu_to_le16(data);
327 set_registers(pegasus, EpromOffset, 4, d);
328 enable_eprom_write(pegasus);
329 set_register(pegasus, EpromOffset, index);
330 set_registers(pegasus, EpromData, 2, &le_data);
331 set_register(pegasus, EpromCtrl, EPROM_WRITE);
333 for (i = 0; i < REG_TIMEOUT; i++) {
334 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
335 if (ret == -ESHUTDOWN)
337 if (tmp & EPROM_DONE)
340 disable_eprom_write(pegasus);
341 if (i >= REG_TIMEOUT)
347 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
350 #endif /* PEGASUS_WRITE_EEPROM */
352 static inline int get_node_id(pegasus_t *pegasus, u8 *id)
357 for (i = 0; i < 3; i++) {
358 ret = read_eprom_word(pegasus, i, &w16);
361 ((__le16 *) id)[i] = cpu_to_le16(w16);
367 static void set_ethernet_addr(pegasus_t *pegasus)
372 if (pegasus->features & PEGASUS_II) {
373 ret = get_registers(pegasus, 0x10, sizeof(node_id), node_id);
377 ret = get_node_id(pegasus, node_id);
380 ret = set_registers(pegasus, EthID, sizeof(node_id), node_id);
385 memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id));
389 eth_hw_addr_random(pegasus->net);
390 netif_dbg(pegasus, drv, pegasus->net, "software assigned MAC address.\n");
395 static inline int reset_mac(pegasus_t *pegasus)
400 set_register(pegasus, EthCtrl1, data);
401 for (i = 0; i < REG_TIMEOUT; i++) {
402 ret = get_registers(pegasus, EthCtrl1, 1, &data);
408 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
409 set_register(pegasus, Gpio1, 0x34);
411 set_register(pegasus, Gpio1, 0x26);
412 set_register(pegasus, Gpio0, pegasus->features);
413 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
417 if (i == REG_TIMEOUT)
420 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
421 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
422 set_register(pegasus, Gpio0, 0x24);
423 set_register(pegasus, Gpio0, 0x26);
425 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
427 ret = read_mii_word(pegasus, 3, 0x1b, &auxmode);
431 write_mii_word(pegasus, 3, 0x1b, &auxmode);
436 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
440 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
442 pegasus_t *pegasus = netdev_priv(dev);
447 ret = read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
450 data[0] = 0xc8; /* TX & RX enable, append status, no CRC */
452 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
453 data[1] |= 0x20; /* set full duplex */
454 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
455 data[1] |= 0x10; /* set 100 Mbps */
458 data[2] = loopback ? 0x09 : 0x01;
460 memcpy(pegasus->eth_regs, data, sizeof(data));
461 ret = set_registers(pegasus, EthCtrl0, 3, data);
463 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
464 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
465 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
467 ret = read_mii_word(pegasus, 0, 0x1b, &auxmode);
471 write_mii_word(pegasus, 0, 0x1b, &auxmode);
476 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
480 static void read_bulk_callback(struct urb *urb)
482 pegasus_t *pegasus = urb->context;
483 struct net_device *net;
484 u8 *buf = urb->transfer_buffer;
485 int rx_status, count = urb->actual_length;
486 int status = urb->status;
493 if (!netif_device_present(net) || !netif_running(net))
500 netif_dbg(pegasus, rx_err, net, "reset MAC\n");
501 pegasus->flags &= ~PEGASUS_RX_BUSY;
503 case -EPIPE: /* stall, or disconnect from TT */
504 /* FIXME schedule work to clear the halt */
505 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n");
510 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status);
513 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status);
520 rx_status = buf[count - 2];
521 if (rx_status & 0x1c) {
522 netif_dbg(pegasus, rx_err, net,
523 "RX packet error %x\n", rx_status);
524 net->stats.rx_errors++;
525 if (rx_status & 0x04) /* runt */
526 net->stats.rx_length_errors++;
527 if (rx_status & 0x08)
528 net->stats.rx_crc_errors++;
529 if (rx_status & 0x10) /* extra bits */
530 net->stats.rx_frame_errors++;
533 if (pegasus->chip == 0x8513) {
534 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
536 pegasus->rx_skb->data += 2;
538 pkt_len = buf[count - 3] << 8;
539 pkt_len += buf[count - 4];
545 * If the packet is unreasonably long, quietly drop it rather than
546 * kernel panicing by calling skb_put.
548 if (pkt_len > PEGASUS_MTU)
552 * at this point we are sure pegasus->rx_skb != NULL
553 * so we go ahead and pass up the packet.
555 skb_put(pegasus->rx_skb, pkt_len);
556 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
557 netif_rx(pegasus->rx_skb);
558 net->stats.rx_packets++;
559 net->stats.rx_bytes += pkt_len;
561 if (pegasus->flags & PEGASUS_UNPLUG)
564 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, PEGASUS_MTU,
567 if (pegasus->rx_skb == NULL)
570 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
571 usb_rcvbulkpipe(pegasus->usb, 1),
572 pegasus->rx_skb->data, PEGASUS_MTU,
573 read_bulk_callback, pegasus);
574 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
575 if (rx_status == -ENODEV)
576 netif_device_detach(pegasus->net);
577 else if (rx_status) {
578 pegasus->flags |= PEGASUS_RX_URB_FAIL;
581 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
587 tasklet_schedule(&pegasus->rx_tl);
590 static void rx_fixup(unsigned long data)
595 pegasus = (pegasus_t *) data;
596 if (pegasus->flags & PEGASUS_UNPLUG)
599 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
602 if (pegasus->rx_skb == NULL)
603 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
606 if (pegasus->rx_skb == NULL) {
607 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n");
608 tasklet_schedule(&pegasus->rx_tl);
611 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
612 usb_rcvbulkpipe(pegasus->usb, 1),
613 pegasus->rx_skb->data, PEGASUS_MTU,
614 read_bulk_callback, pegasus);
616 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
617 if (status == -ENODEV)
618 netif_device_detach(pegasus->net);
620 pegasus->flags |= PEGASUS_RX_URB_FAIL;
621 tasklet_schedule(&pegasus->rx_tl);
623 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
627 static void write_bulk_callback(struct urb *urb)
629 pegasus_t *pegasus = urb->context;
630 struct net_device *net;
631 int status = urb->status;
638 if (!netif_device_present(net) || !netif_running(net))
643 /* FIXME schedule_work() to clear the tx halt */
644 netif_stop_queue(net);
645 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n");
650 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status);
653 netif_info(pegasus, tx_err, net, "TX status %d\n", status);
659 netif_trans_update(net); /* prevent tx timeout */
660 netif_wake_queue(net);
663 static void intr_callback(struct urb *urb)
665 pegasus_t *pegasus = urb->context;
666 struct net_device *net;
667 int res, status = urb->status;
676 case -ECONNRESET: /* unlink */
681 /* some Pegasus-I products report LOTS of data
682 * toggle errors... avoid log spamming
684 netif_dbg(pegasus, timer, net, "intr status %d\n", status);
687 if (urb->actual_length >= 6) {
688 u8 *d = urb->transfer_buffer;
690 /* byte 0 == tx_status1, reg 2B */
691 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
692 |LATE_COL|JABBER_TIMEOUT)) {
693 net->stats.tx_errors++;
694 if (d[0] & TX_UNDERRUN)
695 net->stats.tx_fifo_errors++;
696 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
697 net->stats.tx_aborted_errors++;
699 net->stats.tx_window_errors++;
702 /* d[5].LINK_STATUS lies on some adapters.
703 * d[0].NO_CARRIER kicks in only with failed TX.
704 * ... so monitoring with MII may be safest.
707 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
708 net->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
711 res = usb_submit_urb(urb, GFP_ATOMIC);
713 netif_device_detach(pegasus->net);
715 netif_err(pegasus, timer, net,
716 "can't resubmit interrupt urb, %d\n", res);
719 static void pegasus_tx_timeout(struct net_device *net, unsigned int txqueue)
721 pegasus_t *pegasus = netdev_priv(net);
722 netif_warn(pegasus, timer, net, "tx timeout\n");
723 usb_unlink_urb(pegasus->tx_urb);
724 net->stats.tx_errors++;
727 static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
728 struct net_device *net)
730 pegasus_t *pegasus = netdev_priv(net);
731 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
733 __u16 l16 = skb->len;
735 netif_stop_queue(net);
737 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
738 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
739 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
740 usb_sndbulkpipe(pegasus->usb, 2),
741 pegasus->tx_buff, count,
742 write_bulk_callback, pegasus);
743 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
744 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res);
746 case -EPIPE: /* stall, or disconnect from TT */
747 /* cleanup should already have been scheduled */
749 case -ENODEV: /* disconnect() upcoming */
751 netif_device_detach(pegasus->net);
754 net->stats.tx_errors++;
755 netif_start_queue(net);
758 net->stats.tx_packets++;
759 net->stats.tx_bytes += skb->len;
766 static inline void disable_net_traffic(pegasus_t *pegasus)
768 __le16 tmp = cpu_to_le16(0);
770 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
773 static inline int get_interrupt_interval(pegasus_t *pegasus)
779 ret = read_eprom_word(pegasus, 4, &data);
783 interval = data >> 8;
784 if (pegasus->usb->speed != USB_SPEED_HIGH) {
785 if (interval < 0x80) {
786 netif_info(pegasus, timer, pegasus->net,
787 "intr interval changed from %ums to %ums\n",
790 data = (data & 0x00FF) | ((u16)interval << 8);
791 #ifdef PEGASUS_WRITE_EEPROM
792 write_eprom_word(pegasus, 4, data);
796 pegasus->intr_interval = interval;
801 static void set_carrier(struct net_device *net)
803 pegasus_t *pegasus = netdev_priv(net);
806 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
809 if (tmp & BMSR_LSTATUS)
810 netif_carrier_on(net);
812 netif_carrier_off(net);
815 static void free_all_urbs(pegasus_t *pegasus)
817 usb_free_urb(pegasus->intr_urb);
818 usb_free_urb(pegasus->tx_urb);
819 usb_free_urb(pegasus->rx_urb);
822 static void unlink_all_urbs(pegasus_t *pegasus)
824 usb_kill_urb(pegasus->intr_urb);
825 usb_kill_urb(pegasus->tx_urb);
826 usb_kill_urb(pegasus->rx_urb);
829 static int alloc_urbs(pegasus_t *pegasus)
833 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
834 if (!pegasus->rx_urb) {
837 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
838 if (!pegasus->tx_urb) {
839 usb_free_urb(pegasus->rx_urb);
842 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
843 if (!pegasus->intr_urb) {
844 usb_free_urb(pegasus->tx_urb);
845 usb_free_urb(pegasus->rx_urb);
852 static int pegasus_open(struct net_device *net)
854 pegasus_t *pegasus = netdev_priv(net);
857 if (pegasus->rx_skb == NULL)
858 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
861 if (!pegasus->rx_skb)
864 set_registers(pegasus, EthID, 6, net->dev_addr);
866 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
867 usb_rcvbulkpipe(pegasus->usb, 1),
868 pegasus->rx_skb->data, PEGASUS_MTU,
869 read_bulk_callback, pegasus);
870 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
872 netif_device_detach(pegasus->net);
873 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res);
877 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
878 usb_rcvintpipe(pegasus->usb, 3),
879 pegasus->intr_buff, sizeof(pegasus->intr_buff),
880 intr_callback, pegasus, pegasus->intr_interval);
881 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
883 netif_device_detach(pegasus->net);
884 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res);
885 usb_kill_urb(pegasus->rx_urb);
888 res = enable_net_traffic(net, pegasus->usb);
890 netif_dbg(pegasus, ifup, net,
891 "can't enable_net_traffic() - %d\n", res);
893 usb_kill_urb(pegasus->rx_urb);
894 usb_kill_urb(pegasus->intr_urb);
898 netif_start_queue(net);
899 netif_dbg(pegasus, ifup, net, "open\n");
905 static int pegasus_close(struct net_device *net)
907 pegasus_t *pegasus = netdev_priv(net);
909 netif_stop_queue(net);
910 if (!(pegasus->flags & PEGASUS_UNPLUG))
911 disable_net_traffic(pegasus);
912 tasklet_kill(&pegasus->rx_tl);
913 unlink_all_urbs(pegasus);
918 static void pegasus_get_drvinfo(struct net_device *dev,
919 struct ethtool_drvinfo *info)
921 pegasus_t *pegasus = netdev_priv(dev);
923 strlcpy(info->driver, driver_name, sizeof(info->driver));
924 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
925 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info));
928 /* also handles three patterns of some kind in hardware */
929 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
932 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
934 pegasus_t *pegasus = netdev_priv(dev);
936 wol->supported = WAKE_MAGIC | WAKE_PHY;
937 wol->wolopts = pegasus->wolopts;
941 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
943 pegasus_t *pegasus = netdev_priv(dev);
947 if (wol->wolopts & ~WOL_SUPPORTED)
950 if (wol->wolopts & WAKE_MAGIC)
952 if (wol->wolopts & WAKE_PHY)
954 /* FIXME this 0x10 bit still needs to get set in the chip... */
956 pegasus->eth_regs[0] |= 0x10;
958 pegasus->eth_regs[0] &= ~0x10;
959 pegasus->wolopts = wol->wolopts;
961 ret = set_register(pegasus, WakeupControl, reg78);
963 ret = device_set_wakeup_enable(&pegasus->usb->dev,
968 static inline void pegasus_reset_wol(struct net_device *dev)
970 struct ethtool_wolinfo wol;
972 memset(&wol, 0, sizeof wol);
973 (void) pegasus_set_wol(dev, &wol);
977 pegasus_get_link_ksettings(struct net_device *dev,
978 struct ethtool_link_ksettings *ecmd)
982 pegasus = netdev_priv(dev);
983 mii_ethtool_get_link_ksettings(&pegasus->mii, ecmd);
988 pegasus_set_link_ksettings(struct net_device *dev,
989 const struct ethtool_link_ksettings *ecmd)
991 pegasus_t *pegasus = netdev_priv(dev);
992 return mii_ethtool_set_link_ksettings(&pegasus->mii, ecmd);
995 static int pegasus_nway_reset(struct net_device *dev)
997 pegasus_t *pegasus = netdev_priv(dev);
998 return mii_nway_restart(&pegasus->mii);
1001 static u32 pegasus_get_link(struct net_device *dev)
1003 pegasus_t *pegasus = netdev_priv(dev);
1004 return mii_link_ok(&pegasus->mii);
1007 static u32 pegasus_get_msglevel(struct net_device *dev)
1009 pegasus_t *pegasus = netdev_priv(dev);
1010 return pegasus->msg_enable;
1013 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1015 pegasus_t *pegasus = netdev_priv(dev);
1016 pegasus->msg_enable = v;
1019 static const struct ethtool_ops ops = {
1020 .get_drvinfo = pegasus_get_drvinfo,
1021 .nway_reset = pegasus_nway_reset,
1022 .get_link = pegasus_get_link,
1023 .get_msglevel = pegasus_get_msglevel,
1024 .set_msglevel = pegasus_set_msglevel,
1025 .get_wol = pegasus_get_wol,
1026 .set_wol = pegasus_set_wol,
1027 .get_link_ksettings = pegasus_get_link_ksettings,
1028 .set_link_ksettings = pegasus_set_link_ksettings,
1031 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1033 __u16 *data = (__u16 *) &rq->ifr_ifru;
1034 pegasus_t *pegasus = netdev_priv(net);
1038 case SIOCDEVPRIVATE:
1039 data[0] = pegasus->phy;
1041 case SIOCDEVPRIVATE + 1:
1042 res = read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1044 case SIOCDEVPRIVATE + 2:
1045 if (!capable(CAP_NET_ADMIN))
1047 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, &data[2]);
1056 static void pegasus_set_multicast(struct net_device *net)
1058 pegasus_t *pegasus = netdev_priv(net);
1060 if (net->flags & IFF_PROMISC) {
1061 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1062 netif_info(pegasus, link, net, "Promiscuous mode enabled\n");
1063 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1064 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1065 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1066 netif_dbg(pegasus, link, net, "set allmulti\n");
1068 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1069 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1071 update_eth_regs_async(pegasus);
1074 static __u8 mii_phy_probe(pegasus_t *pegasus)
1079 for (i = 0; i < 32; i++) {
1080 ret = read_mii_word(pegasus, i, MII_BMSR, &tmp);
1083 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1092 static inline void setup_pegasus_II(pegasus_t *pegasus)
1097 set_register(pegasus, Reg1d, 0);
1098 set_register(pegasus, Reg7b, 1);
1100 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1101 set_register(pegasus, Reg7b, 0);
1103 set_register(pegasus, Reg7b, 2);
1105 set_register(pegasus, 0x83, data);
1106 ret = get_registers(pegasus, 0x83, 1, &data);
1111 pegasus->chip = 0x8513;
1115 set_register(pegasus, 0x80, 0xc0);
1116 set_register(pegasus, 0x83, 0xff);
1117 set_register(pegasus, 0x84, 0x01);
1119 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1120 set_register(pegasus, Reg81, 6);
1122 set_register(pegasus, Reg81, 2);
1126 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__);
1129 static void check_carrier(struct work_struct *work)
1131 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1132 set_carrier(pegasus->net);
1133 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1134 queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1135 CARRIER_CHECK_DELAY);
1139 static int pegasus_blacklisted(struct usb_device *udev)
1141 struct usb_device_descriptor *udd = &udev->descriptor;
1143 /* Special quirk to keep the driver from handling the Belkin Bluetooth
1144 * dongle which happens to have the same ID.
1146 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
1147 (udd->idProduct == cpu_to_le16(0x0121)) &&
1148 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1149 (udd->bDeviceProtocol == 1))
1155 static int pegasus_probe(struct usb_interface *intf,
1156 const struct usb_device_id *id)
1158 struct usb_device *dev = interface_to_usbdev(intf);
1159 struct net_device *net;
1161 int dev_index = id - pegasus_ids;
1164 if (pegasus_blacklisted(dev))
1167 net = alloc_etherdev(sizeof(struct pegasus));
1171 pegasus = netdev_priv(net);
1172 pegasus->dev_index = dev_index;
1174 res = alloc_urbs(pegasus);
1176 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1180 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1182 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1184 pegasus->intf = intf;
1189 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1190 net->netdev_ops = &pegasus_netdev_ops;
1191 net->ethtool_ops = &ops;
1192 pegasus->mii.dev = net;
1193 pegasus->mii.mdio_read = mdio_read;
1194 pegasus->mii.mdio_write = mdio_write;
1195 pegasus->mii.phy_id_mask = 0x1f;
1196 pegasus->mii.reg_num_mask = 0x1f;
1197 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
1198 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1200 pegasus->features = usb_dev_id[dev_index].private;
1201 res = get_interrupt_interval(pegasus);
1204 if (reset_mac(pegasus)) {
1205 dev_err(&intf->dev, "can't reset MAC\n");
1209 set_ethernet_addr(pegasus);
1210 if (pegasus->features & PEGASUS_II) {
1211 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1212 setup_pegasus_II(pegasus);
1214 pegasus->phy = mii_phy_probe(pegasus);
1215 if (pegasus->phy == 0xff) {
1216 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1219 pegasus->mii.phy_id = pegasus->phy;
1220 usb_set_intfdata(intf, pegasus);
1221 SET_NETDEV_DEV(net, &intf->dev);
1222 pegasus_reset_wol(net);
1223 res = register_netdev(net);
1226 queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1227 CARRIER_CHECK_DELAY);
1228 dev_info(&intf->dev, "%s, %s, %pM\n", net->name,
1229 usb_dev_id[dev_index].name, net->dev_addr);
1233 usb_set_intfdata(intf, NULL);
1235 free_all_urbs(pegasus);
1242 static void pegasus_disconnect(struct usb_interface *intf)
1244 struct pegasus *pegasus = usb_get_intfdata(intf);
1246 usb_set_intfdata(intf, NULL);
1248 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1252 pegasus->flags |= PEGASUS_UNPLUG;
1253 cancel_delayed_work_sync(&pegasus->carrier_check);
1254 unregister_netdev(pegasus->net);
1255 unlink_all_urbs(pegasus);
1256 free_all_urbs(pegasus);
1257 if (pegasus->rx_skb != NULL) {
1258 dev_kfree_skb(pegasus->rx_skb);
1259 pegasus->rx_skb = NULL;
1261 free_netdev(pegasus->net);
1264 static int pegasus_suspend(struct usb_interface *intf, pm_message_t message)
1266 struct pegasus *pegasus = usb_get_intfdata(intf);
1268 netif_device_detach(pegasus->net);
1269 cancel_delayed_work_sync(&pegasus->carrier_check);
1270 if (netif_running(pegasus->net)) {
1271 usb_kill_urb(pegasus->rx_urb);
1272 usb_kill_urb(pegasus->intr_urb);
1277 static int pegasus_resume(struct usb_interface *intf)
1279 struct pegasus *pegasus = usb_get_intfdata(intf);
1281 netif_device_attach(pegasus->net);
1282 if (netif_running(pegasus->net)) {
1283 pegasus->rx_urb->status = 0;
1284 pegasus->rx_urb->actual_length = 0;
1285 read_bulk_callback(pegasus->rx_urb);
1287 pegasus->intr_urb->status = 0;
1288 pegasus->intr_urb->actual_length = 0;
1289 intr_callback(pegasus->intr_urb);
1291 queue_delayed_work(system_long_wq, &pegasus->carrier_check,
1292 CARRIER_CHECK_DELAY);
1296 static const struct net_device_ops pegasus_netdev_ops = {
1297 .ndo_open = pegasus_open,
1298 .ndo_stop = pegasus_close,
1299 .ndo_do_ioctl = pegasus_ioctl,
1300 .ndo_start_xmit = pegasus_start_xmit,
1301 .ndo_set_rx_mode = pegasus_set_multicast,
1302 .ndo_tx_timeout = pegasus_tx_timeout,
1303 .ndo_set_mac_address = eth_mac_addr,
1304 .ndo_validate_addr = eth_validate_addr,
1307 static struct usb_driver pegasus_driver = {
1308 .name = driver_name,
1309 .probe = pegasus_probe,
1310 .disconnect = pegasus_disconnect,
1311 .id_table = pegasus_ids,
1312 .suspend = pegasus_suspend,
1313 .resume = pegasus_resume,
1314 .disable_hub_initiated_lpm = 1,
1317 static void __init parse_id(char *id)
1319 unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0;
1320 char *token, *name = NULL;
1322 if ((token = strsep(&id, ":")) != NULL)
1324 /* name now points to a null terminated string*/
1325 if ((token = strsep(&id, ":")) != NULL)
1326 vendor_id = simple_strtoul(token, NULL, 16);
1327 if ((token = strsep(&id, ":")) != NULL)
1328 device_id = simple_strtoul(token, NULL, 16);
1329 flags = simple_strtoul(id, NULL, 16);
1330 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1331 driver_name, name, vendor_id, device_id, flags);
1333 if (vendor_id > 0x10000 || vendor_id == 0)
1335 if (device_id > 0x10000 || device_id == 0)
1338 for (i = 0; usb_dev_id[i].name; i++);
1339 usb_dev_id[i].name = name;
1340 usb_dev_id[i].vendor = vendor_id;
1341 usb_dev_id[i].device = device_id;
1342 usb_dev_id[i].private = flags;
1343 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1344 pegasus_ids[i].idVendor = vendor_id;
1345 pegasus_ids[i].idProduct = device_id;
1348 static int __init pegasus_init(void)
1350 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1353 return usb_register(&pegasus_driver);
1356 static void __exit pegasus_exit(void)
1358 usb_deregister(&pegasus_driver);
1361 module_init(pegasus_init);
1362 module_exit(pegasus_exit);