1 /*
2 * Davicom DM96xx USB 10/100Mbps ethernet devices
3 *
4 * Peter Korsgaard <jacmet@sunsite.dk>
5 *
6 * This file is licensed under the terms of the GNU General Public License
7 * version 2. This program is licensed "as is" without any warranty of any
8 * kind, whether express or implied.
9 */
10
11 //#define DEBUG
12
13 #include <linux/module.h>
14 #include <linux/sched.h>
15 #include <linux/stddef.h>
16 #include <linux/netdevice.h>
17 #include <linux/etherdevice.h>
18 #include <linux/ethtool.h>
19 #include <linux/mii.h>
20 #include <linux/usb.h>
21 #include <linux/crc32.h>
22 #include <linux/usb/usbnet.h>
23 #include <linux/slab.h>
24
25 /* datasheet:
26 http://ptm2.cc.utu.fi/ftp/network/cards/DM9601/From_NET/DM9601-DS-P01-930914.pdf
27 */
28
29 /* control requests */
30 #define DM_READ_REGS 0x00
31 #define DM_WRITE_REGS 0x01
32 #define DM_READ_MEMS 0x02
33 #define DM_WRITE_REG 0x03
34 #define DM_WRITE_MEMS 0x05
35 #define DM_WRITE_MEM 0x07
36
37 /* registers */
38 #define DM_NET_CTRL 0x00
39 #define DM_RX_CTRL 0x05
40 #define DM_SHARED_CTRL 0x0b
41 #define DM_SHARED_ADDR 0x0c
42 #define DM_SHARED_DATA 0x0d /* low + high */
43 #define DM_PHY_ADDR 0x10 /* 6 bytes */
44 #define DM_MCAST_ADDR 0x16 /* 8 bytes */
45 #define DM_GPR_CTRL 0x1e
46 #define DM_GPR_DATA 0x1f
47 #define DM_CHIP_ID 0x2c
48 #define DM_MODE_CTRL 0x91 /* only on dm9620 */
49
50 /* chip id values */
51 #define ID_DM9601 0
52 #define ID_DM9620 1
53
54 #define DM_MAX_MCAST 64
55 #define DM_MCAST_SIZE 8
56 #define DM_EEPROM_LEN 256
57 #define DM_TX_OVERHEAD 2 /* 2 byte header */
58 #define DM_RX_OVERHEAD 7 /* 3 byte header + 4 byte crc tail */
59 #define DM_TIMEOUT 1000
60
dm_read(struct usbnet * dev,u8 reg,u16 length,void * data)61 static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data)
62 {
63 int err;
64 err = usbnet_read_cmd(dev, DM_READ_REGS,
65 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
66 0, reg, data, length);
67 if(err != length && err >= 0)
68 err = -EINVAL;
69 return err;
70 }
71
dm_read_reg(struct usbnet * dev,u8 reg,u8 * value)72 static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value)
73 {
74 return dm_read(dev, reg, 1, value);
75 }
76
dm_write(struct usbnet * dev,u8 reg,u16 length,void * data)77 static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data)
78 {
79 int err;
80 err = usbnet_write_cmd(dev, DM_WRITE_REGS,
81 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
82 0, reg, data, length);
83
84 if (err >= 0 && err < length)
85 err = -EINVAL;
86 return err;
87 }
88
dm_write_reg(struct usbnet * dev,u8 reg,u8 value)89 static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value)
90 {
91 return usbnet_write_cmd(dev, DM_WRITE_REG,
92 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
93 value, reg, NULL, 0);
94 }
95
dm_write_async(struct usbnet * dev,u8 reg,u16 length,const void * data)96 static void dm_write_async(struct usbnet *dev, u8 reg, u16 length,
97 const void *data)
98 {
99 usbnet_write_cmd_async(dev, DM_WRITE_REGS,
100 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
101 0, reg, data, length);
102 }
103
dm_write_reg_async(struct usbnet * dev,u8 reg,u8 value)104 static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value)
105 {
106 usbnet_write_cmd_async(dev, DM_WRITE_REG,
107 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
108 value, reg, NULL, 0);
109 }
110
dm_read_shared_word(struct usbnet * dev,int phy,u8 reg,__le16 * value)111 static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 *value)
112 {
113 int ret, i;
114
115 mutex_lock(&dev->phy_mutex);
116
117 dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
118 dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4);
119
120 for (i = 0; i < DM_TIMEOUT; i++) {
121 u8 tmp = 0;
122
123 udelay(1);
124 ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
125 if (ret < 0)
126 goto out;
127
128 /* ready */
129 if ((tmp & 1) == 0)
130 break;
131 }
132
133 if (i == DM_TIMEOUT) {
134 netdev_err(dev->net, "%s read timed out!\n", phy ? "phy" : "eeprom");
135 ret = -EIO;
136 goto out;
137 }
138
139 dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
140 ret = dm_read(dev, DM_SHARED_DATA, 2, value);
141
142 netdev_dbg(dev->net, "read shared %d 0x%02x returned 0x%04x, %d\n",
143 phy, reg, *value, ret);
144
145 out:
146 mutex_unlock(&dev->phy_mutex);
147 return ret;
148 }
149
dm_write_shared_word(struct usbnet * dev,int phy,u8 reg,__le16 value)150 static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 value)
151 {
152 int ret, i;
153
154 mutex_lock(&dev->phy_mutex);
155
156 ret = dm_write(dev, DM_SHARED_DATA, 2, &value);
157 if (ret < 0)
158 goto out;
159
160 dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
161 dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1a : 0x12);
162
163 for (i = 0; i < DM_TIMEOUT; i++) {
164 u8 tmp = 0;
165
166 udelay(1);
167 ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
168 if (ret < 0)
169 goto out;
170
171 /* ready */
172 if ((tmp & 1) == 0)
173 break;
174 }
175
176 if (i == DM_TIMEOUT) {
177 netdev_err(dev->net, "%s write timed out!\n", phy ? "phy" : "eeprom");
178 ret = -EIO;
179 goto out;
180 }
181
182 dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
183
184 out:
185 mutex_unlock(&dev->phy_mutex);
186 return ret;
187 }
188
dm_read_eeprom_word(struct usbnet * dev,u8 offset,void * value)189 static int dm_read_eeprom_word(struct usbnet *dev, u8 offset, void *value)
190 {
191 return dm_read_shared_word(dev, 0, offset, value);
192 }
193
194
195
dm9601_get_eeprom_len(struct net_device * dev)196 static int dm9601_get_eeprom_len(struct net_device *dev)
197 {
198 return DM_EEPROM_LEN;
199 }
200
dm9601_get_eeprom(struct net_device * net,struct ethtool_eeprom * eeprom,u8 * data)201 static int dm9601_get_eeprom(struct net_device *net,
202 struct ethtool_eeprom *eeprom, u8 * data)
203 {
204 struct usbnet *dev = netdev_priv(net);
205 __le16 *ebuf = (__le16 *) data;
206 int i;
207
208 /* access is 16bit */
209 if ((eeprom->offset % 2) || (eeprom->len % 2))
210 return -EINVAL;
211
212 for (i = 0; i < eeprom->len / 2; i++) {
213 if (dm_read_eeprom_word(dev, eeprom->offset / 2 + i,
214 &ebuf[i]) < 0)
215 return -EINVAL;
216 }
217 return 0;
218 }
219
dm9601_mdio_read(struct net_device * netdev,int phy_id,int loc)220 static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc)
221 {
222 struct usbnet *dev = netdev_priv(netdev);
223
224 __le16 res;
225 int err;
226
227 if (phy_id) {
228 netdev_dbg(dev->net, "Only internal phy supported\n");
229 return 0;
230 }
231
232 err = dm_read_shared_word(dev, 1, loc, &res);
233 if (err < 0) {
234 netdev_err(dev->net, "MDIO read error: %d\n", err);
235 return 0;
236 }
237
238 netdev_dbg(dev->net,
239 "dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
240 phy_id, loc, le16_to_cpu(res));
241
242 return le16_to_cpu(res);
243 }
244
dm9601_mdio_write(struct net_device * netdev,int phy_id,int loc,int val)245 static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc,
246 int val)
247 {
248 struct usbnet *dev = netdev_priv(netdev);
249 __le16 res = cpu_to_le16(val);
250
251 if (phy_id) {
252 netdev_dbg(dev->net, "Only internal phy supported\n");
253 return;
254 }
255
256 netdev_dbg(dev->net, "dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
257 phy_id, loc, val);
258
259 dm_write_shared_word(dev, 1, loc, res);
260 }
261
262 static const struct ethtool_ops dm9601_ethtool_ops = {
263 .get_drvinfo = usbnet_get_drvinfo,
264 .get_link = usbnet_get_link,
265 .get_msglevel = usbnet_get_msglevel,
266 .set_msglevel = usbnet_set_msglevel,
267 .get_eeprom_len = dm9601_get_eeprom_len,
268 .get_eeprom = dm9601_get_eeprom,
269 .nway_reset = usbnet_nway_reset,
270 .get_link_ksettings = usbnet_get_link_ksettings_mii,
271 .set_link_ksettings = usbnet_set_link_ksettings_mii,
272 };
273
dm9601_set_multicast(struct net_device * net)274 static void dm9601_set_multicast(struct net_device *net)
275 {
276 struct usbnet *dev = netdev_priv(net);
277 /* We use the 20 byte dev->data for our 8 byte filter buffer
278 * to avoid allocating memory that is tricky to free later */
279 u8 *hashes = (u8 *) & dev->data;
280 u8 rx_ctl = 0x31;
281
282 memset(hashes, 0x00, DM_MCAST_SIZE);
283 hashes[DM_MCAST_SIZE - 1] |= 0x80; /* broadcast address */
284
285 if (net->flags & IFF_PROMISC) {
286 rx_ctl |= 0x02;
287 } else if (net->flags & IFF_ALLMULTI ||
288 netdev_mc_count(net) > DM_MAX_MCAST) {
289 rx_ctl |= 0x08;
290 } else if (!netdev_mc_empty(net)) {
291 struct netdev_hw_addr *ha;
292
293 netdev_for_each_mc_addr(ha, net) {
294 u32 crc = ether_crc(ETH_ALEN, ha->addr) >> 26;
295 hashes[crc >> 3] |= 1 << (crc & 0x7);
296 }
297 }
298
299 dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes);
300 dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl);
301 }
302
__dm9601_set_mac_address(struct usbnet * dev)303 static void __dm9601_set_mac_address(struct usbnet *dev)
304 {
305 dm_write_async(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr);
306 }
307
dm9601_set_mac_address(struct net_device * net,void * p)308 static int dm9601_set_mac_address(struct net_device *net, void *p)
309 {
310 struct sockaddr *addr = p;
311 struct usbnet *dev = netdev_priv(net);
312
313 if (!is_valid_ether_addr(addr->sa_data)) {
314 dev_err(&net->dev, "not setting invalid mac address %pM\n",
315 addr->sa_data);
316 return -EINVAL;
317 }
318
319 eth_hw_addr_set(net, addr->sa_data);
320 __dm9601_set_mac_address(dev);
321
322 return 0;
323 }
324
325 static const struct net_device_ops dm9601_netdev_ops = {
326 .ndo_open = usbnet_open,
327 .ndo_stop = usbnet_stop,
328 .ndo_start_xmit = usbnet_start_xmit,
329 .ndo_tx_timeout = usbnet_tx_timeout,
330 .ndo_change_mtu = usbnet_change_mtu,
331 .ndo_get_stats64 = dev_get_tstats64,
332 .ndo_validate_addr = eth_validate_addr,
333 .ndo_eth_ioctl = usbnet_mii_ioctl,
334 .ndo_set_rx_mode = dm9601_set_multicast,
335 .ndo_set_mac_address = dm9601_set_mac_address,
336 };
337
dm9601_bind(struct usbnet * dev,struct usb_interface * intf)338 static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
339 {
340 int ret;
341 u8 mac[ETH_ALEN], id;
342
343 ret = usbnet_get_endpoints(dev, intf);
344 if (ret)
345 goto out;
346
347 dev->net->netdev_ops = &dm9601_netdev_ops;
348 dev->net->ethtool_ops = &dm9601_ethtool_ops;
349 dev->net->hard_header_len += DM_TX_OVERHEAD;
350 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
351
352 /* dm9620/21a require room for 4 byte padding, even in dm9601
353 * mode, so we need +1 to be able to receive full size
354 * ethernet frames.
355 */
356 dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD + 1;
357
358 dev->mii.dev = dev->net;
359 dev->mii.mdio_read = dm9601_mdio_read;
360 dev->mii.mdio_write = dm9601_mdio_write;
361 dev->mii.phy_id_mask = 0x1f;
362 dev->mii.reg_num_mask = 0x1f;
363
364 /* reset */
365 dm_write_reg(dev, DM_NET_CTRL, 1);
366 udelay(20);
367
368 /* read MAC */
369 if (dm_read(dev, DM_PHY_ADDR, ETH_ALEN, mac) < 0) {
370 printk(KERN_ERR "Error reading MAC address\n");
371 ret = -ENODEV;
372 goto out;
373 }
374
375 /*
376 * Overwrite the auto-generated address only with good ones.
377 */
378 if (is_valid_ether_addr(mac))
379 eth_hw_addr_set(dev->net, mac);
380 else {
381 printk(KERN_WARNING
382 "dm9601: No valid MAC address in EEPROM, using %pM\n",
383 dev->net->dev_addr);
384 __dm9601_set_mac_address(dev);
385 }
386
387 if (dm_read_reg(dev, DM_CHIP_ID, &id) < 0) {
388 netdev_err(dev->net, "Error reading chip ID\n");
389 ret = -ENODEV;
390 goto out;
391 }
392
393 /* put dm9620 devices in dm9601 mode */
394 if (id == ID_DM9620) {
395 u8 mode;
396
397 if (dm_read_reg(dev, DM_MODE_CTRL, &mode) < 0) {
398 netdev_err(dev->net, "Error reading MODE_CTRL\n");
399 ret = -ENODEV;
400 goto out;
401 }
402 dm_write_reg(dev, DM_MODE_CTRL, mode & 0x7f);
403 }
404
405 /* power up phy */
406 dm_write_reg(dev, DM_GPR_CTRL, 1);
407 dm_write_reg(dev, DM_GPR_DATA, 0);
408
409 /* receive broadcast packets */
410 dm9601_set_multicast(dev->net);
411
412 dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
413 dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
414 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
415 mii_nway_restart(&dev->mii);
416
417 out:
418 return ret;
419 }
420
dm9601_rx_fixup(struct usbnet * dev,struct sk_buff * skb)421 static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
422 {
423 u8 status;
424 int len;
425
426 /* format:
427 b1: rx status
428 b2: packet length (incl crc) low
429 b3: packet length (incl crc) high
430 b4..n-4: packet data
431 bn-3..bn: ethernet crc
432 */
433
434 if (unlikely(skb->len < DM_RX_OVERHEAD)) {
435 dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
436 return 0;
437 }
438
439 status = skb->data[0];
440 len = (skb->data[1] | (skb->data[2] << 8)) - 4;
441
442 if (unlikely(status & 0xbf)) {
443 if (status & 0x01) dev->net->stats.rx_fifo_errors++;
444 if (status & 0x02) dev->net->stats.rx_crc_errors++;
445 if (status & 0x04) dev->net->stats.rx_frame_errors++;
446 if (status & 0x20) dev->net->stats.rx_missed_errors++;
447 if (status & 0x90) dev->net->stats.rx_length_errors++;
448 return 0;
449 }
450
451 skb_pull(skb, 3);
452 skb_trim(skb, len);
453
454 return 1;
455 }
456
dm9601_tx_fixup(struct usbnet * dev,struct sk_buff * skb,gfp_t flags)457 static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
458 gfp_t flags)
459 {
460 int len, pad;
461
462 /* format:
463 b1: packet length low
464 b2: packet length high
465 b3..n: packet data
466 */
467
468 len = skb->len + DM_TX_OVERHEAD;
469
470 /* workaround for dm962x errata with tx fifo getting out of
471 * sync if a USB bulk transfer retry happens right after a
472 * packet with odd / maxpacket length by adding up to 3 bytes
473 * padding.
474 */
475 while ((len & 1) || !(len % dev->maxpacket))
476 len++;
477
478 len -= DM_TX_OVERHEAD; /* hw header doesn't count as part of length */
479 pad = len - skb->len;
480
481 if (skb_headroom(skb) < DM_TX_OVERHEAD || skb_tailroom(skb) < pad) {
482 struct sk_buff *skb2;
483
484 skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, pad, flags);
485 dev_kfree_skb_any(skb);
486 skb = skb2;
487 if (!skb)
488 return NULL;
489 }
490
491 __skb_push(skb, DM_TX_OVERHEAD);
492
493 if (pad) {
494 memset(skb->data + skb->len, 0, pad);
495 __skb_put(skb, pad);
496 }
497
498 skb->data[0] = len;
499 skb->data[1] = len >> 8;
500
501 return skb;
502 }
503
dm9601_status(struct usbnet * dev,struct urb * urb)504 static void dm9601_status(struct usbnet *dev, struct urb *urb)
505 {
506 int link;
507 u8 *buf;
508
509 /* format:
510 b0: net status
511 b1: tx status 1
512 b2: tx status 2
513 b3: rx status
514 b4: rx overflow
515 b5: rx count
516 b6: tx count
517 b7: gpr
518 */
519
520 if (urb->actual_length < 8)
521 return;
522
523 buf = urb->transfer_buffer;
524
525 link = !!(buf[0] & 0x40);
526 if (netif_carrier_ok(dev->net) != link) {
527 usbnet_link_change(dev, link, 1);
528 netdev_dbg(dev->net, "Link Status is: %d\n", link);
529 }
530 }
531
dm9601_link_reset(struct usbnet * dev)532 static int dm9601_link_reset(struct usbnet *dev)
533 {
534 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
535
536 mii_check_media(&dev->mii, 1, 1);
537 mii_ethtool_gset(&dev->mii, &ecmd);
538
539 netdev_dbg(dev->net, "link_reset() speed: %u duplex: %d\n",
540 ethtool_cmd_speed(&ecmd), ecmd.duplex);
541
542 return 0;
543 }
544
545 static const struct driver_info dm9601_info = {
546 .description = "Davicom DM96xx USB 10/100 Ethernet",
547 .flags = FLAG_ETHER | FLAG_LINK_INTR,
548 .bind = dm9601_bind,
549 .rx_fixup = dm9601_rx_fixup,
550 .tx_fixup = dm9601_tx_fixup,
551 .status = dm9601_status,
552 .link_reset = dm9601_link_reset,
553 .reset = dm9601_link_reset,
554 };
555
556 static const struct usb_device_id products[] = {
557 {
558 USB_DEVICE(0x07aa, 0x9601), /* Corega FEther USB-TXC */
559 .driver_info = (unsigned long)&dm9601_info,
560 },
561 {
562 USB_DEVICE(0x0a46, 0x9601), /* Davicom USB-100 */
563 .driver_info = (unsigned long)&dm9601_info,
564 },
565 {
566 USB_DEVICE(0x0a46, 0x6688), /* ZT6688 USB NIC */
567 .driver_info = (unsigned long)&dm9601_info,
568 },
569 {
570 USB_DEVICE(0x0a46, 0x0268), /* ShanTou ST268 USB NIC */
571 .driver_info = (unsigned long)&dm9601_info,
572 },
573 {
574 USB_DEVICE(0x0a46, 0x8515), /* ADMtek ADM8515 USB NIC */
575 .driver_info = (unsigned long)&dm9601_info,
576 },
577 {
578 USB_DEVICE(0x0a47, 0x9601), /* Hirose USB-100 */
579 .driver_info = (unsigned long)&dm9601_info,
580 },
581 {
582 USB_DEVICE(0x0fe6, 0x8101), /* DM9601 USB to Fast Ethernet Adapter */
583 .driver_info = (unsigned long)&dm9601_info,
584 },
585 {
586 USB_DEVICE(0x0a46, 0x9000), /* DM9000E */
587 .driver_info = (unsigned long)&dm9601_info,
588 },
589 {
590 USB_DEVICE(0x0a46, 0x9620), /* DM9620 USB to Fast Ethernet Adapter */
591 .driver_info = (unsigned long)&dm9601_info,
592 },
593 {
594 USB_DEVICE(0x0a46, 0x9621), /* DM9621A USB to Fast Ethernet Adapter */
595 .driver_info = (unsigned long)&dm9601_info,
596 },
597 {
598 USB_DEVICE(0x0a46, 0x9622), /* DM9622 USB to Fast Ethernet Adapter */
599 .driver_info = (unsigned long)&dm9601_info,
600 },
601 {
602 USB_DEVICE(0x0a46, 0x0269), /* DM962OA USB to Fast Ethernet Adapter */
603 .driver_info = (unsigned long)&dm9601_info,
604 },
605 {
606 USB_DEVICE(0x0a46, 0x1269), /* DM9621A USB to Fast Ethernet Adapter */
607 .driver_info = (unsigned long)&dm9601_info,
608 },
609 {
610 USB_DEVICE(0x0586, 0x3427), /* ZyXEL Keenetic Plus DSL xDSL modem */
611 .driver_info = (unsigned long)&dm9601_info,
612 },
613 {}, // END
614 };
615
616 MODULE_DEVICE_TABLE(usb, products);
617
618 static struct usb_driver dm9601_driver = {
619 .name = "dm9601",
620 .id_table = products,
621 .probe = usbnet_probe,
622 .disconnect = usbnet_disconnect,
623 .suspend = usbnet_suspend,
624 .resume = usbnet_resume,
625 .disable_hub_initiated_lpm = 1,
626 };
627
628 module_usb_driver(dm9601_driver);
629
630 MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>");
631 MODULE_DESCRIPTION("Davicom DM96xx USB 10/100 ethernet devices");
632 MODULE_LICENSE("GPL");
633