2 * Copyright (c) 1999-2005 Petko Manolov (petkan@users.sourceforge.net)
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.
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 <asm/uaccess.h>
48 #define DRIVER_VERSION "v0.6.14 (2006/09/27)"
49 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
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)
58 static int loopback = 0;
59 static int mii_mode = 0;
60 static char *devid=NULL;
62 static struct usb_eth_dev usb_dev_id[] = {
63 #define PEGASUS_DEV(pn, vid, pid, flags) \
64 {.name = pn, .vendor = vid, .device = pid, .private = flags},
65 #define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
66 PEGASUS_DEV(pn, vid, pid, flags)
69 #undef PEGASUS_DEV_CLASS
74 static struct usb_device_id pegasus_ids[] = {
75 #define PEGASUS_DEV(pn, vid, pid, flags) \
76 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
78 * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product
79 * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to
80 * ignore adaptors belonging to the "Wireless" class 0xE0. For this one
81 * case anyway, seeing as the pegasus is for "Wired" adaptors.
83 #define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
84 {.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \
85 .idVendor = vid, .idProduct = pid, .bDeviceClass = dclass},
88 #undef PEGASUS_DEV_CLASS
93 MODULE_AUTHOR(DRIVER_AUTHOR);
94 MODULE_DESCRIPTION(DRIVER_DESC);
95 MODULE_LICENSE("GPL");
96 module_param(loopback, bool, 0);
97 module_param(mii_mode, bool, 0);
98 module_param(devid, charp, 0);
99 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
100 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
101 MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");
103 /* use ethtool to change the level for any given device */
104 static int msg_level = -1;
105 module_param (msg_level, int, 0);
106 MODULE_PARM_DESC (msg_level, "Override default message level");
108 MODULE_DEVICE_TABLE(usb, pegasus_ids);
109 static const struct net_device_ops pegasus_netdev_ops;
111 static int update_eth_regs_async(pegasus_t *);
112 /* Aargh!!! I _really_ hate such tweaks */
113 static void ctrl_callback(struct urb *urb)
115 pegasus_t *pegasus = urb->context;
116 int status = urb->status;
123 if (pegasus->flags & ETH_REGS_CHANGE) {
124 pegasus->flags &= ~ETH_REGS_CHANGE;
125 pegasus->flags |= ETH_REGS_CHANGED;
126 update_eth_regs_async(pegasus);
136 netif_dbg(pegasus, drv, pegasus->net,
137 "%s, status %d\n", __func__, status);
140 pegasus->flags &= ~ETH_REGS_CHANGED;
141 wake_up(&pegasus->ctrl_wait);
144 static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
149 DECLARE_WAITQUEUE(wait, current);
151 buffer = kmalloc(size, GFP_KERNEL);
153 netif_warn(pegasus, drv, pegasus->net,
154 "out of memory in %s\n", __func__);
157 add_wait_queue(&pegasus->ctrl_wait, &wait);
158 set_current_state(TASK_UNINTERRUPTIBLE);
159 while (pegasus->flags & ETH_REGS_CHANGED)
161 remove_wait_queue(&pegasus->ctrl_wait, &wait);
162 set_current_state(TASK_RUNNING);
164 pegasus->dr.bRequestType = PEGASUS_REQT_READ;
165 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
166 pegasus->dr.wValue = cpu_to_le16(0);
167 pegasus->dr.wIndex = cpu_to_le16(indx);
168 pegasus->dr.wLength = cpu_to_le16(size);
169 pegasus->ctrl_urb->transfer_buffer_length = size;
171 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
172 usb_rcvctrlpipe(pegasus->usb, 0),
173 (char *) &pegasus->dr,
174 buffer, size, ctrl_callback, pegasus);
176 add_wait_queue(&pegasus->ctrl_wait, &wait);
177 set_current_state(TASK_UNINTERRUPTIBLE);
179 /* using ATOMIC, we'd never wake up if we slept */
180 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
181 set_current_state(TASK_RUNNING);
183 netif_device_detach(pegasus->net);
185 netif_err(pegasus, drv, pegasus->net,
186 "%s, status %d\n", __func__, ret);
192 remove_wait_queue(&pegasus->ctrl_wait, &wait);
193 memcpy(data, buffer, size);
199 static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
204 DECLARE_WAITQUEUE(wait, current);
206 buffer = kmemdup(data, size, GFP_KERNEL);
208 netif_warn(pegasus, drv, pegasus->net,
209 "out of memory in %s\n", __func__);
213 add_wait_queue(&pegasus->ctrl_wait, &wait);
214 set_current_state(TASK_UNINTERRUPTIBLE);
215 while (pegasus->flags & ETH_REGS_CHANGED)
217 remove_wait_queue(&pegasus->ctrl_wait, &wait);
218 set_current_state(TASK_RUNNING);
220 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
221 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
222 pegasus->dr.wValue = cpu_to_le16(0);
223 pegasus->dr.wIndex = cpu_to_le16(indx);
224 pegasus->dr.wLength = cpu_to_le16(size);
225 pegasus->ctrl_urb->transfer_buffer_length = size;
227 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
228 usb_sndctrlpipe(pegasus->usb, 0),
229 (char *) &pegasus->dr,
230 buffer, size, ctrl_callback, pegasus);
232 add_wait_queue(&pegasus->ctrl_wait, &wait);
233 set_current_state(TASK_UNINTERRUPTIBLE);
235 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
237 netif_device_detach(pegasus->net);
238 netif_err(pegasus, drv, pegasus->net,
239 "%s, status %d\n", __func__, ret);
245 remove_wait_queue(&pegasus->ctrl_wait, &wait);
251 static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
255 DECLARE_WAITQUEUE(wait, current);
257 tmp = kmemdup(&data, 1, GFP_KERNEL);
259 netif_warn(pegasus, drv, pegasus->net,
260 "out of memory in %s\n", __func__);
263 add_wait_queue(&pegasus->ctrl_wait, &wait);
264 set_current_state(TASK_UNINTERRUPTIBLE);
265 while (pegasus->flags & ETH_REGS_CHANGED)
267 remove_wait_queue(&pegasus->ctrl_wait, &wait);
268 set_current_state(TASK_RUNNING);
270 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
271 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
272 pegasus->dr.wValue = cpu_to_le16(data);
273 pegasus->dr.wIndex = cpu_to_le16(indx);
274 pegasus->dr.wLength = cpu_to_le16(1);
275 pegasus->ctrl_urb->transfer_buffer_length = 1;
277 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
278 usb_sndctrlpipe(pegasus->usb, 0),
279 (char *) &pegasus->dr,
280 tmp, 1, ctrl_callback, pegasus);
282 add_wait_queue(&pegasus->ctrl_wait, &wait);
283 set_current_state(TASK_UNINTERRUPTIBLE);
285 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
287 netif_device_detach(pegasus->net);
289 netif_err(pegasus, drv, pegasus->net,
290 "%s, status %d\n", __func__, ret);
296 remove_wait_queue(&pegasus->ctrl_wait, &wait);
302 static int update_eth_regs_async(pegasus_t * pegasus)
306 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
307 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
308 pegasus->dr.wValue = cpu_to_le16(0);
309 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
310 pegasus->dr.wLength = cpu_to_le16(3);
311 pegasus->ctrl_urb->transfer_buffer_length = 3;
313 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
314 usb_sndctrlpipe(pegasus->usb, 0),
315 (char *) &pegasus->dr,
316 pegasus->eth_regs, 3, ctrl_callback, pegasus);
318 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
320 netif_device_detach(pegasus->net);
321 netif_err(pegasus, drv, pegasus->net,
322 "%s, status %d\n", __func__, ret);
328 /* Returns 0 on success, error on failure */
329 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
332 __u8 data[4] = { phy, 0, 0, indx };
336 set_register(pegasus, PhyCtrl, 0);
337 set_registers(pegasus, PhyAddr, sizeof (data), data);
338 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
339 for (i = 0; i < REG_TIMEOUT; i++) {
340 ret = get_registers(pegasus, PhyCtrl, 1, data);
341 if (ret == -ESHUTDOWN)
343 if (data[0] & PHY_DONE)
347 if (i >= REG_TIMEOUT)
350 ret = get_registers(pegasus, PhyData, 2, ®di);
351 *regd = le16_to_cpu(regdi);
355 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
360 static int mdio_read(struct net_device *dev, int phy_id, int loc)
362 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
365 read_mii_word(pegasus, phy_id, loc, &res);
369 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
372 __u8 data[4] = { phy, 0, 0, indx };
376 data[2] = (u8) (regd >> 8);
377 set_register(pegasus, PhyCtrl, 0);
378 set_registers(pegasus, PhyAddr, sizeof(data), data);
379 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
380 for (i = 0; i < REG_TIMEOUT; i++) {
381 ret = get_registers(pegasus, PhyCtrl, 1, data);
382 if (ret == -ESHUTDOWN)
384 if (data[0] & PHY_DONE)
388 if (i >= REG_TIMEOUT)
394 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
398 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
400 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
402 write_mii_word(pegasus, phy_id, loc, val);
405 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
412 set_register(pegasus, EpromCtrl, 0);
413 set_register(pegasus, EpromOffset, index);
414 set_register(pegasus, EpromCtrl, EPROM_READ);
416 for (i = 0; i < REG_TIMEOUT; i++) {
417 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
418 if (tmp & EPROM_DONE)
420 if (ret == -ESHUTDOWN)
423 if (i >= REG_TIMEOUT)
426 ret = get_registers(pegasus, EpromData, 2, &retdatai);
427 *retdata = le16_to_cpu(retdatai);
431 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
435 #ifdef PEGASUS_WRITE_EEPROM
436 static inline void enable_eprom_write(pegasus_t * pegasus)
441 get_registers(pegasus, EthCtrl2, 1, &tmp);
442 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
445 static inline void disable_eprom_write(pegasus_t * pegasus)
450 get_registers(pegasus, EthCtrl2, 1, &tmp);
451 set_register(pegasus, EpromCtrl, 0);
452 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
455 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
458 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
460 __le16 le_data = cpu_to_le16(data);
462 set_registers(pegasus, EpromOffset, 4, d);
463 enable_eprom_write(pegasus);
464 set_register(pegasus, EpromOffset, index);
465 set_registers(pegasus, EpromData, 2, &le_data);
466 set_register(pegasus, EpromCtrl, EPROM_WRITE);
468 for (i = 0; i < REG_TIMEOUT; i++) {
469 ret = get_registers(pegasus, EpromCtrl, 1, &tmp);
470 if (ret == -ESHUTDOWN)
472 if (tmp & EPROM_DONE)
475 disable_eprom_write(pegasus);
476 if (i >= REG_TIMEOUT)
482 netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
485 #endif /* PEGASUS_WRITE_EEPROM */
487 static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
492 for (i = 0; i < 3; i++) {
493 read_eprom_word(pegasus, i, &w16);
494 ((__le16 *) id)[i] = cpu_to_le16(w16);
498 static void set_ethernet_addr(pegasus_t * pegasus)
502 if (pegasus->features & PEGASUS_II) {
503 get_registers(pegasus, 0x10, sizeof(node_id), node_id);
505 get_node_id(pegasus, node_id);
506 set_registers(pegasus, EthID, sizeof (node_id), node_id);
508 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
511 static inline int reset_mac(pegasus_t * pegasus)
516 set_register(pegasus, EthCtrl1, data);
517 for (i = 0; i < REG_TIMEOUT; i++) {
518 get_registers(pegasus, EthCtrl1, 1, &data);
522 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
523 set_register(pegasus, Gpio1, 0x34);
525 set_register(pegasus, Gpio1, 0x26);
526 set_register(pegasus, Gpio0, pegasus->features);
527 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
531 if (i == REG_TIMEOUT)
534 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
535 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
536 set_register(pegasus, Gpio0, 0x24);
537 set_register(pegasus, Gpio0, 0x26);
539 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
541 read_mii_word(pegasus, 3, 0x1b, &auxmode);
542 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
548 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
552 pegasus_t *pegasus = netdev_priv(dev);
555 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
558 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
559 data[1] |= 0x20; /* set full duplex */
560 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
561 data[1] |= 0x10; /* set 100 Mbps */
564 data[2] = (loopback & 1) ? 0x09 : 0x01;
566 memcpy(pegasus->eth_regs, data, sizeof (data));
567 ret = set_registers(pegasus, EthCtrl0, 3, data);
569 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
570 usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
571 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
573 read_mii_word(pegasus, 0, 0x1b, &auxmode);
574 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
580 static void fill_skb_pool(pegasus_t * pegasus)
584 for (i = 0; i < RX_SKBS; i++) {
585 if (pegasus->rx_pool[i])
587 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
589 ** we give up if the allocation fail. the tasklet will be
590 ** rescheduled again anyway...
592 if (pegasus->rx_pool[i] == NULL)
594 skb_reserve(pegasus->rx_pool[i], 2);
598 static void free_skb_pool(pegasus_t * pegasus)
602 for (i = 0; i < RX_SKBS; i++) {
603 if (pegasus->rx_pool[i]) {
604 dev_kfree_skb(pegasus->rx_pool[i]);
605 pegasus->rx_pool[i] = NULL;
610 static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
615 for (i = 0; i < RX_SKBS; i++) {
616 if (likely(pegasus->rx_pool[i] != NULL)) {
617 skb = pegasus->rx_pool[i];
618 pegasus->rx_pool[i] = NULL;
625 static void read_bulk_callback(struct urb *urb)
627 pegasus_t *pegasus = urb->context;
628 struct net_device *net;
629 int rx_status, count = urb->actual_length;
630 int status = urb->status;
631 u8 *buf = urb->transfer_buffer;
638 if (!netif_device_present(net) || !netif_running(net))
645 netif_dbg(pegasus, rx_err, net, "reset MAC\n");
646 pegasus->flags &= ~PEGASUS_RX_BUSY;
648 case -EPIPE: /* stall, or disconnect from TT */
649 /* FIXME schedule work to clear the halt */
650 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n");
655 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status);
658 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status);
662 if (!count || count < 4)
665 rx_status = buf[count - 2];
666 if (rx_status & 0x1e) {
667 netif_dbg(pegasus, rx_err, net,
668 "RX packet error %x\n", rx_status);
669 pegasus->stats.rx_errors++;
670 if (rx_status & 0x06) // long or runt
671 pegasus->stats.rx_length_errors++;
672 if (rx_status & 0x08)
673 pegasus->stats.rx_crc_errors++;
674 if (rx_status & 0x10) // extra bits
675 pegasus->stats.rx_frame_errors++;
678 if (pegasus->chip == 0x8513) {
679 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
681 pegasus->rx_skb->data += 2;
683 pkt_len = buf[count - 3] << 8;
684 pkt_len += buf[count - 4];
690 * If the packet is unreasonably long, quietly drop it rather than
691 * kernel panicing by calling skb_put.
693 if (pkt_len > PEGASUS_MTU)
697 * at this point we are sure pegasus->rx_skb != NULL
698 * so we go ahead and pass up the packet.
700 skb_put(pegasus->rx_skb, pkt_len);
701 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
702 netif_rx(pegasus->rx_skb);
703 pegasus->stats.rx_packets++;
704 pegasus->stats.rx_bytes += pkt_len;
706 if (pegasus->flags & PEGASUS_UNPLUG)
709 spin_lock(&pegasus->rx_pool_lock);
710 pegasus->rx_skb = pull_skb(pegasus);
711 spin_unlock(&pegasus->rx_pool_lock);
713 if (pegasus->rx_skb == NULL)
716 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
717 usb_rcvbulkpipe(pegasus->usb, 1),
718 pegasus->rx_skb->data, PEGASUS_MTU + 8,
719 read_bulk_callback, pegasus);
720 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
721 if (rx_status == -ENODEV)
722 netif_device_detach(pegasus->net);
723 else if (rx_status) {
724 pegasus->flags |= PEGASUS_RX_URB_FAIL;
727 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
733 tasklet_schedule(&pegasus->rx_tl);
736 static void rx_fixup(unsigned long data)
742 pegasus = (pegasus_t *) data;
743 if (pegasus->flags & PEGASUS_UNPLUG)
746 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
747 fill_skb_pool(pegasus);
748 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
751 if (pegasus->rx_skb == NULL) {
752 pegasus->rx_skb = pull_skb(pegasus);
754 if (pegasus->rx_skb == NULL) {
755 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n");
756 tasklet_schedule(&pegasus->rx_tl);
759 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
760 usb_rcvbulkpipe(pegasus->usb, 1),
761 pegasus->rx_skb->data, PEGASUS_MTU + 8,
762 read_bulk_callback, pegasus);
764 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC);
765 if (status == -ENODEV)
766 netif_device_detach(pegasus->net);
768 pegasus->flags |= PEGASUS_RX_URB_FAIL;
769 tasklet_schedule(&pegasus->rx_tl);
771 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
774 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
777 static void write_bulk_callback(struct urb *urb)
779 pegasus_t *pegasus = urb->context;
780 struct net_device *net;
781 int status = urb->status;
788 if (!netif_device_present(net) || !netif_running(net))
793 /* FIXME schedule_work() to clear the tx halt */
794 netif_stop_queue(net);
795 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n");
800 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status);
803 netif_info(pegasus, tx_err, net, "TX status %d\n", status);
809 net->trans_start = jiffies; /* prevent tx timeout */
810 netif_wake_queue(net);
813 static void intr_callback(struct urb *urb)
815 pegasus_t *pegasus = urb->context;
816 struct net_device *net;
817 int res, status = urb->status;
826 case -ECONNRESET: /* unlink */
831 /* some Pegasus-I products report LOTS of data
832 * toggle errors... avoid log spamming
834 netif_dbg(pegasus, timer, net, "intr status %d\n", status);
837 if (urb->actual_length >= 6) {
838 u8 * d = urb->transfer_buffer;
840 /* byte 0 == tx_status1, reg 2B */
841 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
842 |LATE_COL|JABBER_TIMEOUT)) {
843 pegasus->stats.tx_errors++;
844 if (d[0] & TX_UNDERRUN)
845 pegasus->stats.tx_fifo_errors++;
846 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
847 pegasus->stats.tx_aborted_errors++;
849 pegasus->stats.tx_window_errors++;
852 /* d[5].LINK_STATUS lies on some adapters.
853 * d[0].NO_CARRIER kicks in only with failed TX.
854 * ... so monitoring with MII may be safest.
857 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
858 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
861 res = usb_submit_urb(urb, GFP_ATOMIC);
863 netif_device_detach(pegasus->net);
865 netif_err(pegasus, timer, net,
866 "can't resubmit interrupt urb, %d\n", res);
869 static void pegasus_tx_timeout(struct net_device *net)
871 pegasus_t *pegasus = netdev_priv(net);
872 netif_warn(pegasus, timer, net, "tx timeout\n");
873 usb_unlink_urb(pegasus->tx_urb);
874 pegasus->stats.tx_errors++;
877 static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
878 struct net_device *net)
880 pegasus_t *pegasus = netdev_priv(net);
881 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
883 __u16 l16 = skb->len;
885 netif_stop_queue(net);
887 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
888 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
889 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
890 usb_sndbulkpipe(pegasus->usb, 2),
891 pegasus->tx_buff, count,
892 write_bulk_callback, pegasus);
893 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
894 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res);
896 case -EPIPE: /* stall, or disconnect from TT */
897 /* cleanup should already have been scheduled */
899 case -ENODEV: /* disconnect() upcoming */
901 netif_device_detach(pegasus->net);
904 pegasus->stats.tx_errors++;
905 netif_start_queue(net);
908 pegasus->stats.tx_packets++;
909 pegasus->stats.tx_bytes += skb->len;
916 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
918 return &((pegasus_t *) netdev_priv(dev))->stats;
921 static inline void disable_net_traffic(pegasus_t * pegasus)
923 __le16 tmp = cpu_to_le16(0);
925 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
928 static inline void get_interrupt_interval(pegasus_t * pegasus)
933 read_eprom_word(pegasus, 4, &data);
934 interval = data >> 8;
935 if (pegasus->usb->speed != USB_SPEED_HIGH) {
936 if (interval < 0x80) {
937 netif_info(pegasus, timer, pegasus->net,
938 "intr interval changed from %ums to %ums\n",
941 data = (data & 0x00FF) | ((u16)interval << 8);
942 #ifdef PEGASUS_WRITE_EEPROM
943 write_eprom_word(pegasus, 4, data);
947 pegasus->intr_interval = interval;
950 static void set_carrier(struct net_device *net)
952 pegasus_t *pegasus = netdev_priv(net);
955 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
958 if (tmp & BMSR_LSTATUS)
959 netif_carrier_on(net);
961 netif_carrier_off(net);
964 static void free_all_urbs(pegasus_t * pegasus)
966 usb_free_urb(pegasus->intr_urb);
967 usb_free_urb(pegasus->tx_urb);
968 usb_free_urb(pegasus->rx_urb);
969 usb_free_urb(pegasus->ctrl_urb);
972 static void unlink_all_urbs(pegasus_t * pegasus)
974 usb_kill_urb(pegasus->intr_urb);
975 usb_kill_urb(pegasus->tx_urb);
976 usb_kill_urb(pegasus->rx_urb);
977 usb_kill_urb(pegasus->ctrl_urb);
980 static int alloc_urbs(pegasus_t * pegasus)
982 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
983 if (!pegasus->ctrl_urb) {
986 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
987 if (!pegasus->rx_urb) {
988 usb_free_urb(pegasus->ctrl_urb);
991 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
992 if (!pegasus->tx_urb) {
993 usb_free_urb(pegasus->rx_urb);
994 usb_free_urb(pegasus->ctrl_urb);
997 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
998 if (!pegasus->intr_urb) {
999 usb_free_urb(pegasus->tx_urb);
1000 usb_free_urb(pegasus->rx_urb);
1001 usb_free_urb(pegasus->ctrl_urb);
1008 static int pegasus_open(struct net_device *net)
1010 pegasus_t *pegasus = netdev_priv(net);
1013 if (pegasus->rx_skb == NULL)
1014 pegasus->rx_skb = pull_skb(pegasus);
1016 ** Note: no point to free the pool. it is empty :-)
1018 if (!pegasus->rx_skb)
1021 res = set_registers(pegasus, EthID, 6, net->dev_addr);
1023 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
1024 usb_rcvbulkpipe(pegasus->usb, 1),
1025 pegasus->rx_skb->data, PEGASUS_MTU + 8,
1026 read_bulk_callback, pegasus);
1027 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) {
1029 netif_device_detach(pegasus->net);
1030 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res);
1034 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
1035 usb_rcvintpipe(pegasus->usb, 3),
1036 pegasus->intr_buff, sizeof (pegasus->intr_buff),
1037 intr_callback, pegasus, pegasus->intr_interval);
1038 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) {
1040 netif_device_detach(pegasus->net);
1041 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res);
1042 usb_kill_urb(pegasus->rx_urb);
1045 if ((res = enable_net_traffic(net, pegasus->usb))) {
1046 netif_dbg(pegasus, ifup, net,
1047 "can't enable_net_traffic() - %d\n", res);
1049 usb_kill_urb(pegasus->rx_urb);
1050 usb_kill_urb(pegasus->intr_urb);
1051 free_skb_pool(pegasus);
1055 netif_start_queue(net);
1056 netif_dbg(pegasus, ifup, net, "open\n");
1062 static int pegasus_close(struct net_device *net)
1064 pegasus_t *pegasus = netdev_priv(net);
1066 netif_stop_queue(net);
1067 if (!(pegasus->flags & PEGASUS_UNPLUG))
1068 disable_net_traffic(pegasus);
1069 tasklet_kill(&pegasus->rx_tl);
1070 unlink_all_urbs(pegasus);
1075 static void pegasus_get_drvinfo(struct net_device *dev,
1076 struct ethtool_drvinfo *info)
1078 pegasus_t *pegasus = netdev_priv(dev);
1079 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
1080 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
1081 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
1084 /* also handles three patterns of some kind in hardware */
1085 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
1088 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1090 pegasus_t *pegasus = netdev_priv(dev);
1092 wol->supported = WAKE_MAGIC | WAKE_PHY;
1093 wol->wolopts = pegasus->wolopts;
1097 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1099 pegasus_t *pegasus = netdev_priv(dev);
1102 if (wol->wolopts & ~WOL_SUPPORTED)
1105 if (wol->wolopts & WAKE_MAGIC)
1107 if (wol->wolopts & WAKE_PHY)
1109 /* FIXME this 0x10 bit still needs to get set in the chip... */
1111 pegasus->eth_regs[0] |= 0x10;
1113 pegasus->eth_regs[0] &= ~0x10;
1114 pegasus->wolopts = wol->wolopts;
1115 return set_register(pegasus, WakeupControl, reg78);
1118 static inline void pegasus_reset_wol(struct net_device *dev)
1120 struct ethtool_wolinfo wol;
1122 memset(&wol, 0, sizeof wol);
1123 (void) pegasus_set_wol(dev, &wol);
1127 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1131 pegasus = netdev_priv(dev);
1132 mii_ethtool_gset(&pegasus->mii, ecmd);
1137 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1139 pegasus_t *pegasus = netdev_priv(dev);
1140 return mii_ethtool_sset(&pegasus->mii, ecmd);
1143 static int pegasus_nway_reset(struct net_device *dev)
1145 pegasus_t *pegasus = netdev_priv(dev);
1146 return mii_nway_restart(&pegasus->mii);
1149 static u32 pegasus_get_link(struct net_device *dev)
1151 pegasus_t *pegasus = netdev_priv(dev);
1152 return mii_link_ok(&pegasus->mii);
1155 static u32 pegasus_get_msglevel(struct net_device *dev)
1157 pegasus_t *pegasus = netdev_priv(dev);
1158 return pegasus->msg_enable;
1161 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1163 pegasus_t *pegasus = netdev_priv(dev);
1164 pegasus->msg_enable = v;
1167 static const struct ethtool_ops ops = {
1168 .get_drvinfo = pegasus_get_drvinfo,
1169 .get_settings = pegasus_get_settings,
1170 .set_settings = pegasus_set_settings,
1171 .nway_reset = pegasus_nway_reset,
1172 .get_link = pegasus_get_link,
1173 .get_msglevel = pegasus_get_msglevel,
1174 .set_msglevel = pegasus_set_msglevel,
1175 .get_wol = pegasus_get_wol,
1176 .set_wol = pegasus_set_wol,
1179 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1181 __u16 *data = (__u16 *) & rq->ifr_ifru;
1182 pegasus_t *pegasus = netdev_priv(net);
1186 case SIOCDEVPRIVATE:
1187 data[0] = pegasus->phy;
1188 case SIOCDEVPRIVATE + 1:
1189 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1192 case SIOCDEVPRIVATE + 2:
1193 if (!capable(CAP_NET_ADMIN))
1195 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1204 static void pegasus_set_multicast(struct net_device *net)
1206 pegasus_t *pegasus = netdev_priv(net);
1208 if (net->flags & IFF_PROMISC) {
1209 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1210 netif_info(pegasus, link, net, "Promiscuous mode enabled\n");
1211 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) {
1212 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1213 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1214 netif_dbg(pegasus, link, net, "set allmulti\n");
1216 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1217 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1220 pegasus->ctrl_urb->status = 0;
1222 pegasus->flags |= ETH_REGS_CHANGE;
1223 ctrl_callback(pegasus->ctrl_urb);
1226 static __u8 mii_phy_probe(pegasus_t * pegasus)
1231 for (i = 0; i < 32; i++) {
1232 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1233 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1242 static inline void setup_pegasus_II(pegasus_t * pegasus)
1246 set_register(pegasus, Reg1d, 0);
1247 set_register(pegasus, Reg7b, 1);
1249 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1250 set_register(pegasus, Reg7b, 0);
1252 set_register(pegasus, Reg7b, 2);
1254 set_register(pegasus, 0x83, data);
1255 get_registers(pegasus, 0x83, 1, &data);
1258 pegasus->chip = 0x8513;
1263 set_register(pegasus, 0x80, 0xc0);
1264 set_register(pegasus, 0x83, 0xff);
1265 set_register(pegasus, 0x84, 0x01);
1267 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1268 set_register(pegasus, Reg81, 6);
1270 set_register(pegasus, Reg81, 2);
1274 static int pegasus_count;
1275 static struct workqueue_struct *pegasus_workqueue = NULL;
1276 #define CARRIER_CHECK_DELAY (2 * HZ)
1278 static void check_carrier(struct work_struct *work)
1280 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
1281 set_carrier(pegasus->net);
1282 if (!(pegasus->flags & PEGASUS_UNPLUG)) {
1283 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1284 CARRIER_CHECK_DELAY);
1288 static int pegasus_blacklisted(struct usb_device *udev)
1290 struct usb_device_descriptor *udd = &udev->descriptor;
1292 /* Special quirk to keep the driver from handling the Belkin Bluetooth
1293 * dongle which happens to have the same ID.
1295 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
1296 (udd->idProduct == cpu_to_le16(0x0121)) &&
1297 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
1298 (udd->bDeviceProtocol == 1))
1304 /* we rely on probe() and remove() being serialized so we
1305 * don't need extra locking on pegasus_count.
1307 static void pegasus_dec_workqueue(void)
1310 if (pegasus_count == 0) {
1311 destroy_workqueue(pegasus_workqueue);
1312 pegasus_workqueue = NULL;
1316 static int pegasus_probe(struct usb_interface *intf,
1317 const struct usb_device_id *id)
1319 struct usb_device *dev = interface_to_usbdev(intf);
1320 struct net_device *net;
1322 int dev_index = id - pegasus_ids;
1325 if (pegasus_blacklisted(dev))
1328 if (pegasus_count == 0) {
1329 pegasus_workqueue = create_singlethread_workqueue("pegasus");
1330 if (!pegasus_workqueue)
1337 net = alloc_etherdev(sizeof(struct pegasus));
1339 dev_err(&intf->dev, "can't allocate %s\n", "device");
1343 pegasus = netdev_priv(net);
1344 pegasus->dev_index = dev_index;
1345 init_waitqueue_head(&pegasus->ctrl_wait);
1347 if (!alloc_urbs(pegasus)) {
1348 dev_err(&intf->dev, "can't allocate %s\n", "urbs");
1352 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1354 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
1356 pegasus->intf = intf;
1361 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1362 net->netdev_ops = &pegasus_netdev_ops;
1363 SET_ETHTOOL_OPS(net, &ops);
1364 pegasus->mii.dev = net;
1365 pegasus->mii.mdio_read = mdio_read;
1366 pegasus->mii.mdio_write = mdio_write;
1367 pegasus->mii.phy_id_mask = 0x1f;
1368 pegasus->mii.reg_num_mask = 0x1f;
1369 spin_lock_init(&pegasus->rx_pool_lock);
1370 pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
1371 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
1373 pegasus->features = usb_dev_id[dev_index].private;
1374 get_interrupt_interval(pegasus);
1375 if (reset_mac(pegasus)) {
1376 dev_err(&intf->dev, "can't reset MAC\n");
1380 set_ethernet_addr(pegasus);
1381 fill_skb_pool(pegasus);
1382 if (pegasus->features & PEGASUS_II) {
1383 dev_info(&intf->dev, "setup Pegasus II specific registers\n");
1384 setup_pegasus_II(pegasus);
1386 pegasus->phy = mii_phy_probe(pegasus);
1387 if (pegasus->phy == 0xff) {
1388 dev_warn(&intf->dev, "can't locate MII phy, using default\n");
1391 pegasus->mii.phy_id = pegasus->phy;
1392 usb_set_intfdata(intf, pegasus);
1393 SET_NETDEV_DEV(net, &intf->dev);
1394 pegasus_reset_wol(net);
1395 res = register_netdev(net);
1398 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1399 CARRIER_CHECK_DELAY);
1401 dev_info(&intf->dev, "%s, %s, %pM\n",
1403 usb_dev_id[dev_index].name,
1408 usb_set_intfdata(intf, NULL);
1409 free_skb_pool(pegasus);
1411 free_all_urbs(pegasus);
1416 pegasus_dec_workqueue();
1420 static void pegasus_disconnect(struct usb_interface *intf)
1422 struct pegasus *pegasus = usb_get_intfdata(intf);
1424 usb_set_intfdata(intf, NULL);
1426 dev_dbg(&intf->dev, "unregistering non-bound device?\n");
1430 pegasus->flags |= PEGASUS_UNPLUG;
1431 cancel_delayed_work(&pegasus->carrier_check);
1432 unregister_netdev(pegasus->net);
1433 usb_put_dev(interface_to_usbdev(intf));
1434 unlink_all_urbs(pegasus);
1435 free_all_urbs(pegasus);
1436 free_skb_pool(pegasus);
1437 if (pegasus->rx_skb != NULL) {
1438 dev_kfree_skb(pegasus->rx_skb);
1439 pegasus->rx_skb = NULL;
1441 free_netdev(pegasus->net);
1442 pegasus_dec_workqueue();
1445 static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
1447 struct pegasus *pegasus = usb_get_intfdata(intf);
1449 netif_device_detach (pegasus->net);
1450 cancel_delayed_work(&pegasus->carrier_check);
1451 if (netif_running(pegasus->net)) {
1452 usb_kill_urb(pegasus->rx_urb);
1453 usb_kill_urb(pegasus->intr_urb);
1458 static int pegasus_resume (struct usb_interface *intf)
1460 struct pegasus *pegasus = usb_get_intfdata(intf);
1462 netif_device_attach (pegasus->net);
1463 if (netif_running(pegasus->net)) {
1464 pegasus->rx_urb->status = 0;
1465 pegasus->rx_urb->actual_length = 0;
1466 read_bulk_callback(pegasus->rx_urb);
1468 pegasus->intr_urb->status = 0;
1469 pegasus->intr_urb->actual_length = 0;
1470 intr_callback(pegasus->intr_urb);
1472 queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
1473 CARRIER_CHECK_DELAY);
1477 static const struct net_device_ops pegasus_netdev_ops = {
1478 .ndo_open = pegasus_open,
1479 .ndo_stop = pegasus_close,
1480 .ndo_do_ioctl = pegasus_ioctl,
1481 .ndo_start_xmit = pegasus_start_xmit,
1482 .ndo_set_multicast_list = pegasus_set_multicast,
1483 .ndo_get_stats = pegasus_netdev_stats,
1484 .ndo_tx_timeout = pegasus_tx_timeout,
1485 .ndo_change_mtu = eth_change_mtu,
1486 .ndo_set_mac_address = eth_mac_addr,
1487 .ndo_validate_addr = eth_validate_addr,
1490 static struct usb_driver pegasus_driver = {
1491 .name = driver_name,
1492 .probe = pegasus_probe,
1493 .disconnect = pegasus_disconnect,
1494 .id_table = pegasus_ids,
1495 .suspend = pegasus_suspend,
1496 .resume = pegasus_resume,
1499 static void __init parse_id(char *id)
1501 unsigned int vendor_id=0, device_id=0, flags=0, i=0;
1502 char *token, *name=NULL;
1504 if ((token = strsep(&id, ":")) != NULL)
1506 /* name now points to a null terminated string*/
1507 if ((token = strsep(&id, ":")) != NULL)
1508 vendor_id = simple_strtoul(token, NULL, 16);
1509 if ((token = strsep(&id, ":")) != NULL)
1510 device_id = simple_strtoul(token, NULL, 16);
1511 flags = simple_strtoul(id, NULL, 16);
1512 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n",
1513 driver_name, name, vendor_id, device_id, flags);
1515 if (vendor_id > 0x10000 || vendor_id == 0)
1517 if (device_id > 0x10000 || device_id == 0)
1520 for (i=0; usb_dev_id[i].name; i++);
1521 usb_dev_id[i].name = name;
1522 usb_dev_id[i].vendor = vendor_id;
1523 usb_dev_id[i].device = device_id;
1524 usb_dev_id[i].private = flags;
1525 pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
1526 pegasus_ids[i].idVendor = vendor_id;
1527 pegasus_ids[i].idProduct = device_id;
1530 static int __init pegasus_init(void)
1532 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1535 return usb_register(&pegasus_driver);
1538 static void __exit pegasus_exit(void)
1540 usb_deregister(&pegasus_driver);
1543 module_init(pegasus_init);
1544 module_exit(pegasus_exit);