2 * Copyright (c) 1999-2003 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.
33 #include <linux/sched.h>
34 #include <linux/slab.h>
35 #include <linux/init.h>
36 #include <linux/delay.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/ethtool.h>
40 #include <linux/mii.h>
41 #include <linux/usb.h>
42 #include <linux/module.h>
43 #include <asm/byteorder.h>
44 #include <asm/uaccess.h>
50 #define DRIVER_VERSION "v0.5.12 (2005/01/13)"
51 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
52 #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
54 static const char driver_name[] = "pegasus";
56 #undef PEGASUS_WRITE_EEPROM
57 #define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
58 BMSR_100FULL | BMSR_ANEGCAPABLE)
60 static int loopback = 0;
61 static int mii_mode = 0;
62 static int multicast_filter_limit = 32;
64 static struct usb_eth_dev usb_dev_id[] = {
65 #define PEGASUS_DEV(pn, vid, pid, flags) \
66 {.name = pn, .vendor = vid, .device = pid, .private = flags},
72 static struct usb_device_id pegasus_ids[] = {
73 #define PEGASUS_DEV(pn, vid, pid, flags) \
74 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
80 MODULE_AUTHOR(DRIVER_AUTHOR);
81 MODULE_DESCRIPTION(DRIVER_DESC);
82 MODULE_LICENSE("GPL");
83 module_param(loopback, bool, 0);
84 module_param(mii_mode, bool, 0);
85 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
86 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
88 MODULE_DEVICE_TABLE(usb, pegasus_ids);
90 static int update_eth_regs_async(pegasus_t *);
91 /* Aargh!!! I _really_ hate such tweaks */
92 static void ctrl_callback(struct urb *urb, struct pt_regs *regs)
94 pegasus_t *pegasus = urb->context;
99 switch (urb->status) {
101 if (pegasus->flags & ETH_REGS_CHANGE) {
102 pegasus->flags &= ~ETH_REGS_CHANGE;
103 pegasus->flags |= ETH_REGS_CHANGED;
104 update_eth_regs_async(pegasus);
113 warn("%s: status %d", __FUNCTION__, urb->status);
115 pegasus->flags &= ~ETH_REGS_CHANGED;
116 wake_up(&pegasus->ctrl_wait);
119 static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
124 DECLARE_WAITQUEUE(wait, current);
126 buffer = kmalloc(size, GFP_KERNEL);
128 warn("%s: looks like we're out of memory", __FUNCTION__);
131 add_wait_queue(&pegasus->ctrl_wait, &wait);
132 set_current_state(TASK_UNINTERRUPTIBLE);
133 while (pegasus->flags & ETH_REGS_CHANGED)
135 remove_wait_queue(&pegasus->ctrl_wait, &wait);
136 set_current_state(TASK_RUNNING);
138 pegasus->dr.bRequestType = PEGASUS_REQT_READ;
139 pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
140 pegasus->dr.wValue = cpu_to_le16(0);
141 pegasus->dr.wIndex = cpu_to_le16p(&indx);
142 pegasus->dr.wLength = cpu_to_le16p(&size);
143 pegasus->ctrl_urb->transfer_buffer_length = size;
145 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
146 usb_rcvctrlpipe(pegasus->usb, 0),
147 (char *) &pegasus->dr,
148 buffer, size, ctrl_callback, pegasus);
150 add_wait_queue(&pegasus->ctrl_wait, &wait);
151 set_current_state(TASK_UNINTERRUPTIBLE);
153 /* using ATOMIC, we'd never wake up if we slept */
154 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
155 err("%s: BAD CTRLs %d", __FUNCTION__, ret);
161 remove_wait_queue(&pegasus->ctrl_wait, &wait);
162 memcpy(data, buffer, size);
168 static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
173 DECLARE_WAITQUEUE(wait, current);
175 buffer = kmalloc(size, GFP_KERNEL);
177 warn("%s: looks like we're out of memory", __FUNCTION__);
180 memcpy(buffer, data, size);
182 add_wait_queue(&pegasus->ctrl_wait, &wait);
183 set_current_state(TASK_UNINTERRUPTIBLE);
184 while (pegasus->flags & ETH_REGS_CHANGED)
186 remove_wait_queue(&pegasus->ctrl_wait, &wait);
187 set_current_state(TASK_RUNNING);
189 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
190 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
191 pegasus->dr.wValue = cpu_to_le16(0);
192 pegasus->dr.wIndex = cpu_to_le16p(&indx);
193 pegasus->dr.wLength = cpu_to_le16p(&size);
194 pegasus->ctrl_urb->transfer_buffer_length = size;
196 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
197 usb_sndctrlpipe(pegasus->usb, 0),
198 (char *) &pegasus->dr,
199 buffer, size, ctrl_callback, pegasus);
201 add_wait_queue(&pegasus->ctrl_wait, &wait);
202 set_current_state(TASK_UNINTERRUPTIBLE);
204 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
205 err("%s: BAD CTRL %d", __FUNCTION__, ret);
211 remove_wait_queue(&pegasus->ctrl_wait, &wait);
217 static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
221 DECLARE_WAITQUEUE(wait, current);
223 tmp = kmalloc(1, GFP_KERNEL);
225 warn("%s: looks like we're out of memory", __FUNCTION__);
228 memcpy(tmp, &data, 1);
229 add_wait_queue(&pegasus->ctrl_wait, &wait);
230 set_current_state(TASK_UNINTERRUPTIBLE);
231 while (pegasus->flags & ETH_REGS_CHANGED)
233 remove_wait_queue(&pegasus->ctrl_wait, &wait);
234 set_current_state(TASK_RUNNING);
236 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
237 pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
238 pegasus->dr.wValue = cpu_to_le16(data);
239 pegasus->dr.wIndex = cpu_to_le16p(&indx);
240 pegasus->dr.wLength = cpu_to_le16(1);
241 pegasus->ctrl_urb->transfer_buffer_length = 1;
243 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
244 usb_sndctrlpipe(pegasus->usb, 0),
245 (char *) &pegasus->dr,
246 &tmp, 1, ctrl_callback, pegasus);
248 add_wait_queue(&pegasus->ctrl_wait, &wait);
249 set_current_state(TASK_UNINTERRUPTIBLE);
251 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
252 err("%s: BAD CTRL %d", __FUNCTION__, ret);
258 remove_wait_queue(&pegasus->ctrl_wait, &wait);
264 static int update_eth_regs_async(pegasus_t * pegasus)
268 pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
269 pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
270 pegasus->dr.wValue = 0;
271 pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
272 pegasus->dr.wLength = cpu_to_le16(3);
273 pegasus->ctrl_urb->transfer_buffer_length = 3;
275 usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
276 usb_sndctrlpipe(pegasus->usb, 0),
277 (char *) &pegasus->dr,
278 pegasus->eth_regs, 3, ctrl_callback, pegasus);
280 if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC)))
281 err("%s: BAD CTRL %d, flgs %x", __FUNCTION__, ret,
287 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
290 __u8 data[4] = { phy, 0, 0, indx };
293 set_register(pegasus, PhyCtrl, 0);
294 set_registers(pegasus, PhyAddr, sizeof (data), data);
295 set_register(pegasus, PhyCtrl, (indx | PHY_READ));
296 for (i = 0; i < REG_TIMEOUT; i++) {
297 get_registers(pegasus, PhyCtrl, 1, data);
298 if (data[0] & PHY_DONE)
301 if (i < REG_TIMEOUT) {
302 get_registers(pegasus, PhyData, 2, ®di);
303 *regd = le16_to_cpu(regdi);
306 warn("%s: failed", __FUNCTION__);
311 static int mdio_read(struct net_device *dev, int phy_id, int loc)
313 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
316 read_mii_word(pegasus, phy_id, loc, (u16 *) & res);
320 static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd)
323 __u8 data[4] = { phy, 0, 0, indx };
325 *(data + 1) = cpu_to_le16p(®d);
326 set_register(pegasus, PhyCtrl, 0);
327 set_registers(pegasus, PhyAddr, sizeof(data), data);
328 set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
329 for (i = 0; i < REG_TIMEOUT; i++) {
330 get_registers(pegasus, PhyCtrl, 1, data);
331 if (data[0] & PHY_DONE)
336 warn("%s: failed", __FUNCTION__);
341 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
343 pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
345 write_mii_word(pegasus, phy_id, loc, val);
348 static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
354 set_register(pegasus, EpromCtrl, 0);
355 set_register(pegasus, EpromOffset, index);
356 set_register(pegasus, EpromCtrl, EPROM_READ);
358 for (i = 0; i < REG_TIMEOUT; i++) {
359 get_registers(pegasus, EpromCtrl, 1, &tmp);
360 if (tmp & EPROM_DONE)
363 if (i < REG_TIMEOUT) {
364 get_registers(pegasus, EpromData, 2, &retdatai);
365 *retdata = le16_to_cpu(retdatai);
368 warn("%s: failed", __FUNCTION__);
373 #ifdef PEGASUS_WRITE_EEPROM
374 static inline void enable_eprom_write(pegasus_t * pegasus)
378 get_registers(pegasus, EthCtrl2, 1, &tmp);
379 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
382 static inline void disable_eprom_write(pegasus_t * pegasus)
386 get_registers(pegasus, EthCtrl2, 1, &tmp);
387 set_register(pegasus, EpromCtrl, 0);
388 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
391 static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
394 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
396 set_registers(pegasus, EpromOffset, 4, d);
397 enable_eprom_write(pegasus);
398 set_register(pegasus, EpromOffset, index);
399 set_registers(pegasus, EpromData, 2, &data);
400 set_register(pegasus, EpromCtrl, EPROM_WRITE);
402 for (i = 0; i < REG_TIMEOUT; i++) {
403 get_registers(pegasus, EpromCtrl, 1, &tmp);
404 if (tmp & EPROM_DONE)
407 disable_eprom_write(pegasus);
410 warn("%s: failed", __FUNCTION__);
413 #endif /* PEGASUS_WRITE_EEPROM */
415 static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
420 for (i = 0; i < 3; i++) {
421 read_eprom_word(pegasus, i, &w16);
422 ((__le16 *) id)[i] = cpu_to_le16p(&w16);
426 static void set_ethernet_addr(pegasus_t * pegasus)
430 get_node_id(pegasus, node_id);
431 set_registers(pegasus, EthID, sizeof (node_id), node_id);
432 memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id));
435 static inline int reset_mac(pegasus_t * pegasus)
440 set_register(pegasus, EthCtrl1, data);
441 for (i = 0; i < REG_TIMEOUT; i++) {
442 get_registers(pegasus, EthCtrl1, 1, &data);
446 if (mii_mode && (pegasus->features & HAS_HOME_PNA))
447 set_register(pegasus, Gpio1, 0x34);
449 set_register(pegasus, Gpio1, 0x26);
450 set_register(pegasus, Gpio0, pegasus->features);
451 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET);
455 if (i == REG_TIMEOUT)
458 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
459 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
460 set_register(pegasus, Gpio0, 0x24);
461 set_register(pegasus, Gpio0, 0x26);
463 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
465 read_mii_word(pegasus, 3, 0x1b, &auxmode);
466 write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
472 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
476 pegasus_t *pegasus = netdev_priv(dev);
478 read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
481 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL))
482 data[1] |= 0x20; /* set full duplex */
483 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF))
484 data[1] |= 0x10; /* set 100 Mbps */
487 data[2] = (loopback & 1) ? 0x09 : 0x01;
489 memcpy(pegasus->eth_regs, data, sizeof (data));
490 set_registers(pegasus, EthCtrl0, 3, data);
492 if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
493 usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
495 read_mii_word(pegasus, 0, 0x1b, &auxmode);
496 write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
502 static void fill_skb_pool(pegasus_t * pegasus)
506 for (i = 0; i < RX_SKBS; i++) {
507 if (pegasus->rx_pool[i])
509 pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
511 ** we give up if the allocation fail. the tasklet will be
512 ** rescheduled again anyway...
514 if (pegasus->rx_pool[i] == NULL)
516 pegasus->rx_pool[i]->dev = pegasus->net;
517 skb_reserve(pegasus->rx_pool[i], 2);
521 static void free_skb_pool(pegasus_t * pegasus)
525 for (i = 0; i < RX_SKBS; i++) {
526 if (pegasus->rx_pool[i]) {
527 dev_kfree_skb(pegasus->rx_pool[i]);
528 pegasus->rx_pool[i] = NULL;
533 static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
538 for (i = 0; i < RX_SKBS; i++) {
539 if (likely(pegasus->rx_pool[i] != NULL)) {
540 skb = pegasus->rx_pool[i];
541 pegasus->rx_pool[i] = NULL;
548 static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
550 pegasus_t *pegasus = urb->context;
551 struct net_device *net;
552 int rx_status, count = urb->actual_length;
555 if (!pegasus || !(pegasus->flags & PEGASUS_RUNNING))
559 if (!netif_device_present(net))
562 switch (urb->status) {
566 dbg("%s: reset MAC", net->name);
567 pegasus->flags &= ~PEGASUS_RX_BUSY;
569 case -EPIPE: /* stall, or disconnect from TT */
570 /* FIXME schedule work to clear the halt */
571 warn("%s: no rx stall recovery", net->name);
576 dbg("%s: rx unlink, %d", net->name, urb->status);
579 dbg("%s: RX status %d", net->name, urb->status);
586 rx_status = le32_to_cpu(*(__le32 *) (urb->transfer_buffer + count - 4));
587 if (rx_status & 0x000e0000) {
588 dbg("%s: RX packet error %x", net->name, rx_status & 0xe0000);
589 pegasus->stats.rx_errors++;
590 if (rx_status & 0x060000)
591 pegasus->stats.rx_length_errors++;
592 if (rx_status & 0x080000)
593 pegasus->stats.rx_crc_errors++;
594 if (rx_status & 0x100000)
595 pegasus->stats.rx_frame_errors++;
598 if (pegasus->chip == 0x8513) {
599 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
601 pegasus->rx_skb->data += 2;
603 pkt_len = (rx_status & 0xfff) - 8;
607 * at this point we are sure pegasus->rx_skb != NULL
608 * so we go ahead and pass up the packet.
610 skb_put(pegasus->rx_skb, pkt_len);
611 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net);
612 netif_rx(pegasus->rx_skb);
613 pegasus->stats.rx_packets++;
614 pegasus->stats.rx_bytes += pkt_len;
616 if (pegasus->flags & PEGASUS_UNPLUG)
619 spin_lock(&pegasus->rx_pool_lock);
620 pegasus->rx_skb = pull_skb(pegasus);
621 spin_unlock(&pegasus->rx_pool_lock);
623 if (pegasus->rx_skb == NULL)
626 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
627 usb_rcvbulkpipe(pegasus->usb, 1),
628 pegasus->rx_skb->data, PEGASUS_MTU + 8,
629 read_bulk_callback, pegasus);
630 if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
631 pegasus->flags |= PEGASUS_RX_URB_FAIL;
634 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
640 tasklet_schedule(&pegasus->rx_tl);
643 static void rx_fixup(unsigned long data)
648 pegasus = (pegasus_t *) data;
649 if (pegasus->flags & PEGASUS_UNPLUG)
652 spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
653 fill_skb_pool(pegasus);
654 if (pegasus->flags & PEGASUS_RX_URB_FAIL)
657 if (pegasus->rx_skb == NULL) {
658 pegasus->rx_skb = pull_skb(pegasus);
660 if (pegasus->rx_skb == NULL) {
661 warn("wow, low on memory");
662 tasklet_schedule(&pegasus->rx_tl);
665 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
666 usb_rcvbulkpipe(pegasus->usb, 1),
667 pegasus->rx_skb->data, PEGASUS_MTU + 8,
668 read_bulk_callback, pegasus);
670 if (usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC)) {
671 pegasus->flags |= PEGASUS_RX_URB_FAIL;
672 tasklet_schedule(&pegasus->rx_tl);
674 pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
677 spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
680 static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
682 pegasus_t *pegasus = urb->context;
683 struct net_device *net = pegasus->net;
685 if (!pegasus || !(pegasus->flags & PEGASUS_RUNNING))
688 if (!netif_device_present(net))
691 switch (urb->status) {
693 /* FIXME schedule_work() to clear the tx halt */
694 netif_stop_queue(net);
695 warn("%s: no tx stall recovery", net->name);
700 dbg("%s: tx unlink, %d", net->name, urb->status);
703 info("%s: TX status %d", net->name, urb->status);
709 net->trans_start = jiffies;
710 netif_wake_queue(net);
713 static void intr_callback(struct urb *urb, struct pt_regs *regs)
715 pegasus_t *pegasus = urb->context;
716 struct net_device *net;
723 switch (urb->status) {
726 case -ECONNRESET: /* unlink */
731 /* some Pegasus-I products report LOTS of data
732 * toggle errors... avoid log spamming
734 pr_debug("%s: intr status %d\n", net->name, urb->status);
737 if (urb->actual_length >= 6) {
738 u8 * d = urb->transfer_buffer;
740 /* byte 0 == tx_status1, reg 2B */
741 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
742 |LATE_COL|JABBER_TIMEOUT)) {
743 pegasus->stats.tx_errors++;
744 if (d[0] & TX_UNDERRUN)
745 pegasus->stats.tx_fifo_errors++;
746 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT))
747 pegasus->stats.tx_aborted_errors++;
749 pegasus->stats.tx_window_errors++;
752 /* d[5].LINK_STATUS lies on some adapters.
753 * d[0].NO_CARRIER kicks in only with failed TX.
754 * ... so monitoring with MII may be safest.
756 if (d[0] & NO_CARRIER)
757 netif_carrier_off(net);
759 netif_carrier_on(net);
761 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
762 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
765 status = usb_submit_urb(urb, SLAB_ATOMIC);
767 printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n",
771 static void pegasus_tx_timeout(struct net_device *net)
773 pegasus_t *pegasus = netdev_priv(net);
774 printk(KERN_WARNING "%s: tx timeout\n", net->name);
775 pegasus->tx_urb->transfer_flags |= URB_ASYNC_UNLINK;
776 usb_unlink_urb(pegasus->tx_urb);
777 pegasus->stats.tx_errors++;
780 static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
782 pegasus_t *pegasus = netdev_priv(net);
783 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
785 __u16 l16 = skb->len;
787 netif_stop_queue(net);
789 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
790 memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
791 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
792 usb_sndbulkpipe(pegasus->usb, 2),
793 pegasus->tx_buff, count,
794 write_bulk_callback, pegasus);
795 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
796 warn("failed tx_urb %d", res);
798 case -EPIPE: /* stall, or disconnect from TT */
799 /* cleanup should already have been scheduled */
801 case -ENODEV: /* disconnect() upcoming */
804 pegasus->stats.tx_errors++;
805 netif_start_queue(net);
808 pegasus->stats.tx_packets++;
809 pegasus->stats.tx_bytes += skb->len;
810 net->trans_start = jiffies;
817 static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
819 return &((pegasus_t *) netdev_priv(dev))->stats;
822 static inline void disable_net_traffic(pegasus_t * pegasus)
826 set_registers(pegasus, EthCtrl0, 2, &tmp);
829 static inline void get_interrupt_interval(pegasus_t * pegasus)
833 read_eprom_word(pegasus, 4, (__u16 *) data);
834 if (data[1] < 0x80) {
835 info("intr interval will be changed from %ums to %ums",
838 #ifdef PEGASUS_WRITE_EEPROM
839 write_eprom_word(pegasus, 4, *(__u16 *) data);
842 pegasus->intr_interval = data[1];
845 static void set_carrier(struct net_device *net)
847 pegasus_t *pegasus = netdev_priv(net);
850 read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp);
851 if (tmp & BMSR_LSTATUS)
852 netif_carrier_on(net);
854 netif_carrier_off(net);
858 static void free_all_urbs(pegasus_t * pegasus)
860 usb_free_urb(pegasus->intr_urb);
861 usb_free_urb(pegasus->tx_urb);
862 usb_free_urb(pegasus->rx_urb);
863 usb_free_urb(pegasus->ctrl_urb);
866 static void unlink_all_urbs(pegasus_t * pegasus)
868 usb_kill_urb(pegasus->intr_urb);
869 usb_kill_urb(pegasus->tx_urb);
870 usb_kill_urb(pegasus->rx_urb);
871 usb_kill_urb(pegasus->ctrl_urb);
874 static int alloc_urbs(pegasus_t * pegasus)
876 pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
877 if (!pegasus->ctrl_urb) {
880 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
881 if (!pegasus->rx_urb) {
882 usb_free_urb(pegasus->ctrl_urb);
885 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
886 if (!pegasus->tx_urb) {
887 usb_free_urb(pegasus->rx_urb);
888 usb_free_urb(pegasus->ctrl_urb);
891 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
892 if (!pegasus->intr_urb) {
893 usb_free_urb(pegasus->tx_urb);
894 usb_free_urb(pegasus->rx_urb);
895 usb_free_urb(pegasus->ctrl_urb);
902 static int pegasus_open(struct net_device *net)
904 pegasus_t *pegasus = netdev_priv(net);
907 if (pegasus->rx_skb == NULL)
908 pegasus->rx_skb = pull_skb(pegasus);
910 ** Note: no point to free the pool. it is empty :-)
912 if (!pegasus->rx_skb)
915 set_registers(pegasus, EthID, 6, net->dev_addr);
917 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
918 usb_rcvbulkpipe(pegasus->usb, 1),
919 pegasus->rx_skb->data, PEGASUS_MTU + 8,
920 read_bulk_callback, pegasus);
921 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL)))
922 warn("%s: failed rx_urb %d", __FUNCTION__, res);
923 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
924 usb_rcvintpipe(pegasus->usb, 3),
925 pegasus->intr_buff, sizeof (pegasus->intr_buff),
926 intr_callback, pegasus, pegasus->intr_interval);
927 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL)))
928 warn("%s: failed intr_urb %d", __FUNCTION__, res);
929 netif_start_queue(net);
930 pegasus->flags |= PEGASUS_RUNNING;
931 if ((res = enable_net_traffic(net, pegasus->usb))) {
932 err("can't enable_net_traffic() - %d", res);
934 usb_kill_urb(pegasus->rx_urb);
935 usb_kill_urb(pegasus->intr_urb);
936 free_skb_pool(pegasus);
945 static int pegasus_close(struct net_device *net)
947 pegasus_t *pegasus = netdev_priv(net);
949 pegasus->flags &= ~PEGASUS_RUNNING;
950 netif_stop_queue(net);
951 if (!(pegasus->flags & PEGASUS_UNPLUG))
952 disable_net_traffic(pegasus);
953 tasklet_kill(&pegasus->rx_tl);
954 unlink_all_urbs(pegasus);
959 void pegasus_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
961 pegasus_t *pegasus = netdev_priv(dev);
962 strncpy(info->driver, driver_name, sizeof (info->driver) - 1);
963 strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1);
964 usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info));
967 /* also handles three patterns of some kind in hardware */
968 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
971 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
973 pegasus_t *pegasus = netdev_priv(dev);
975 wol->supported = WAKE_MAGIC | WAKE_PHY;
976 wol->wolopts = pegasus->wolopts;
980 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
982 pegasus_t *pegasus = netdev_priv(dev);
985 if (wol->wolopts & ~WOL_SUPPORTED)
988 if (wol->wolopts & WAKE_MAGIC)
990 if (wol->wolopts & WAKE_PHY)
993 pegasus->eth_regs[0] |= 0x10;
995 pegasus->eth_regs[0] &= ~0x10;
996 pegasus->wolopts = wol->wolopts;
997 return set_register(pegasus, WakeupControl, reg78);
1001 pegasus_reset_wol(struct net_device *dev)
1003 struct ethtool_wolinfo wol;
1005 memset(&wol, 0, sizeof wol);
1006 (void) pegasus_set_wol(dev, &wol);
1010 pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1012 pegasus_t *pegasus = netdev_priv(dev);
1013 mii_ethtool_gset(&pegasus->mii, ecmd);
1017 pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1019 pegasus_t *pegasus = netdev_priv(dev);
1020 return mii_ethtool_sset(&pegasus->mii, ecmd);
1023 static int pegasus_nway_reset(struct net_device *dev)
1025 pegasus_t *pegasus = netdev_priv(dev);
1026 return mii_nway_restart(&pegasus->mii);
1029 static u32 pegasus_get_link(struct net_device *dev)
1031 pegasus_t *pegasus = netdev_priv(dev);
1032 return mii_link_ok(&pegasus->mii);
1035 static u32 pegasus_get_msglevel(struct net_device *dev)
1037 pegasus_t *pegasus = netdev_priv(dev);
1038 return pegasus->msg_level;
1041 static void pegasus_set_msglevel(struct net_device *dev, u32 v)
1043 pegasus_t *pegasus = netdev_priv(dev);
1044 pegasus->msg_level = v;
1047 static struct ethtool_ops ops = {
1048 .get_drvinfo = pegasus_get_drvinfo,
1049 .get_settings = pegasus_get_settings,
1050 .set_settings = pegasus_set_settings,
1051 .nway_reset = pegasus_nway_reset,
1052 .get_link = pegasus_get_link,
1053 .get_msglevel = pegasus_get_msglevel,
1054 .set_msglevel = pegasus_set_msglevel,
1055 .get_wol = pegasus_get_wol,
1056 .set_wol = pegasus_set_wol,
1059 static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
1061 __u16 *data = (__u16 *) & rq->ifr_ifru;
1062 pegasus_t *pegasus = netdev_priv(net);
1066 case SIOCDEVPRIVATE:
1067 data[0] = pegasus->phy;
1068 case SIOCDEVPRIVATE + 1:
1069 read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]);
1072 case SIOCDEVPRIVATE + 2:
1073 if (!capable(CAP_NET_ADMIN))
1075 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
1084 static void pegasus_set_multicast(struct net_device *net)
1086 pegasus_t *pegasus = netdev_priv(net);
1088 if (net->flags & IFF_PROMISC) {
1089 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS;
1090 pr_info("%s: Promiscuous mode enabled.\n", net->name);
1091 } else if ((net->mc_count > multicast_filter_limit) ||
1092 (net->flags & IFF_ALLMULTI)) {
1093 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST;
1094 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1095 pr_info("%s: set allmulti\n", net->name);
1097 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
1098 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
1101 pegasus->flags |= ETH_REGS_CHANGE;
1102 ctrl_callback(pegasus->ctrl_urb, NULL);
1105 static __u8 mii_phy_probe(pegasus_t * pegasus)
1110 for (i = 0; i < 32; i++) {
1111 read_mii_word(pegasus, i, MII_BMSR, &tmp);
1112 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0)
1121 static inline void setup_pegasus_II(pegasus_t * pegasus)
1125 set_register(pegasus, Reg1d, 0);
1126 set_register(pegasus, Reg7b, 1);
1128 if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
1129 set_register(pegasus, Reg7b, 0);
1131 set_register(pegasus, Reg7b, 2);
1133 set_register(pegasus, 0x83, data);
1134 get_registers(pegasus, 0x83, 1, &data);
1137 pegasus->chip = 0x8513;
1142 set_register(pegasus, 0x80, 0xc0);
1143 set_register(pegasus, 0x83, 0xff);
1144 set_register(pegasus, 0x84, 0x01);
1146 if (pegasus->features & HAS_HOME_PNA && mii_mode)
1147 set_register(pegasus, Reg81, 6);
1149 set_register(pegasus, Reg81, 2);
1152 static int pegasus_probe(struct usb_interface *intf,
1153 const struct usb_device_id *id)
1155 struct usb_device *dev = interface_to_usbdev(intf);
1156 struct net_device *net;
1158 int dev_index = id - pegasus_ids;
1162 net = alloc_etherdev(sizeof(struct pegasus));
1164 err("out of memory allocating device structure");
1168 pegasus = netdev_priv(net);
1169 memset(pegasus, 0, sizeof (struct pegasus));
1170 pegasus->dev_index = dev_index;
1171 init_waitqueue_head(&pegasus->ctrl_wait);
1173 if (!alloc_urbs(pegasus))
1176 tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
1180 SET_MODULE_OWNER(net);
1181 net->open = pegasus_open;
1182 net->stop = pegasus_close;
1183 net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
1184 net->tx_timeout = pegasus_tx_timeout;
1185 net->do_ioctl = pegasus_ioctl;
1186 net->hard_start_xmit = pegasus_start_xmit;
1187 net->set_multicast_list = pegasus_set_multicast;
1188 net->get_stats = pegasus_netdev_stats;
1189 SET_ETHTOOL_OPS(net, &ops);
1190 pegasus->mii.dev = net;
1191 pegasus->mii.mdio_read = mdio_read;
1192 pegasus->mii.mdio_write = mdio_write;
1193 pegasus->mii.phy_id_mask = 0x1f;
1194 pegasus->mii.reg_num_mask = 0x1f;
1195 spin_lock_init(&pegasus->rx_pool_lock);
1197 pegasus->features = usb_dev_id[dev_index].private;
1198 get_interrupt_interval(pegasus);
1199 if (reset_mac(pegasus)) {
1200 dev_err(&intf->dev, "can't reset MAC\n");
1204 set_ethernet_addr(pegasus);
1205 fill_skb_pool(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 usb_set_intfdata(intf, pegasus);
1216 SET_NETDEV_DEV(net, &intf->dev);
1217 pegasus_reset_wol(net);
1218 res = register_netdev(net);
1221 pr_info("%s: %s\n", net->name, usb_dev_id[dev_index].name);
1225 usb_set_intfdata(intf, NULL);
1226 free_skb_pool(pegasus);
1228 free_all_urbs(pegasus);
1236 static void pegasus_disconnect(struct usb_interface *intf)
1238 struct pegasus *pegasus = usb_get_intfdata(intf);
1240 usb_set_intfdata(intf, NULL);
1242 warn("unregistering non-existant device");
1246 pegasus->flags |= PEGASUS_UNPLUG;
1247 unregister_netdev(pegasus->net);
1248 usb_put_dev(interface_to_usbdev(intf));
1249 free_all_urbs(pegasus);
1250 free_skb_pool(pegasus);
1251 if (pegasus->rx_skb)
1252 dev_kfree_skb(pegasus->rx_skb);
1253 free_netdev(pegasus->net);
1256 static int pegasus_suspend (struct usb_interface *intf, u32 state)
1258 struct pegasus *pegasus = usb_get_intfdata(intf);
1260 netif_device_detach (pegasus->net);
1264 static int pegasus_resume (struct usb_interface *intf)
1266 struct pegasus *pegasus = usb_get_intfdata(intf);
1268 netif_device_attach (pegasus->net);
1272 static struct usb_driver pegasus_driver = {
1273 .name = driver_name,
1274 .probe = pegasus_probe,
1275 .disconnect = pegasus_disconnect,
1276 .id_table = pegasus_ids,
1277 .suspend = pegasus_suspend,
1278 .resume = pegasus_resume,
1281 static int __init pegasus_init(void)
1283 pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION);
1284 return usb_register(&pegasus_driver);
1287 static void __exit pegasus_exit(void)
1289 usb_deregister(&pegasus_driver);
1292 module_init(pegasus_init);
1293 module_exit(pegasus_exit);