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2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771 
 kernel/drivers/net/usb/ax88179_178a.c
....@@ -1,20 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * ASIX AX88179/178A USB 3.0/2.0 to Gigabit Ethernet Devices
34  *
45  * Copyright (C) 2011-2013 ASIX
5
- *
6
- * This program is free software; you can redistribute it and/or modify
7
- * it under the terms of the GNU General Public License
8
- * as published by the Free Software Foundation; either version 2
9
- * of the License, or (at your option) any later version.
10
- *
11
- * This program is distributed in the hope that it will be useful,
12
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
- * GNU General Public License for more details.
15
- *
16
- * You should have received a copy of the GNU General Public License
17
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
186  */
197 
208 #include <linux/module.h>
....@@ -43,6 +31,7 @@
4331 #define AX_ACCESS_PHY				0x02
4432 #define AX_ACCESS_EEPROM			0x04
4533 #define AX_ACCESS_EFUS				0x05
34
+#define AX_RELOAD_EEPROM_EFUSE			0x06
4635 #define AX_PAUSE_WATERLVL_HIGH			0x54
4736 #define AX_PAUSE_WATERLVL_LOW			0x55
4837 
....@@ -623,6 +612,81 @@
623612 	return 0;
624613 }
625614 
615
+static int
616
+ax88179_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
617
+		   u8 *data)
618
+{
619
+	struct usbnet *dev = netdev_priv(net);
620
+	u16 *eeprom_buff;
621
+	int first_word;
622
+	int last_word;
623
+	int ret;
624
+	int i;
625
+
626
+	netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
627
+		   eeprom->len, eeprom->offset, eeprom->magic);
628
+
629
+	if (eeprom->len == 0)
630
+		return -EINVAL;
631
+
632
+	if (eeprom->magic != AX88179_EEPROM_MAGIC)
633
+		return -EINVAL;
634
+
635
+	first_word = eeprom->offset >> 1;
636
+	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
637
+
638
+	eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
639
+				    GFP_KERNEL);
640
+	if (!eeprom_buff)
641
+		return -ENOMEM;
642
+
643
+	/* align data to 16 bit boundaries, read the missing data from
644
+	   the EEPROM */
645
+	if (eeprom->offset & 1) {
646
+		ret = ax88179_read_cmd(dev, AX_ACCESS_EEPROM, first_word, 1, 2,
647
+				       &eeprom_buff[0]);
648
+		if (ret < 0) {
649
+			netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
650
+			goto free;
651
+		}
652
+	}
653
+
654
+	if ((eeprom->offset + eeprom->len) & 1) {
655
+		ret = ax88179_read_cmd(dev, AX_ACCESS_EEPROM, last_word, 1, 2,
656
+				       &eeprom_buff[last_word - first_word]);
657
+		if (ret < 0) {
658
+			netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
659
+			goto free;
660
+		}
661
+	}
662
+
663
+	memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
664
+
665
+	for (i = first_word; i <= last_word; i++) {
666
+		netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
667
+			   i, eeprom_buff[i - first_word]);
668
+		ret = ax88179_write_cmd(dev, AX_ACCESS_EEPROM, i, 1, 2,
669
+					&eeprom_buff[i - first_word]);
670
+		if (ret < 0) {
671
+			netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n", i);
672
+			goto free;
673
+		}
674
+		msleep(20);
675
+	}
676
+
677
+	/* reload EEPROM data */
678
+	ret = ax88179_write_cmd(dev, AX_RELOAD_EEPROM_EFUSE, 0x0000, 0, 0, NULL);
679
+	if (ret < 0) {
680
+		netdev_err(net, "Failed to reload EEPROM data\n");
681
+		goto free;
682
+	}
683
+
684
+	ret = 0;
685
+free:
686
+	kfree(eeprom_buff);
687
+	return ret;
688
+}
689
+
626690 static int ax88179_get_link_ksettings(struct net_device *net,
627691 				      struct ethtool_link_ksettings *cmd)
628692 {
....@@ -796,7 +860,7 @@
796860 {
797861 	struct usbnet *dev = netdev_priv(net);
798862 	struct ax88179_data *priv = (struct ax88179_data *)dev->data;
799
-	int ret = -EOPNOTSUPP;
863
+	int ret;
800864 
801865 	priv->eee_enabled = edata->eee_enabled;
802866 	if (!priv->eee_enabled) {
....@@ -834,11 +898,13 @@
834898 	.set_wol		= ax88179_set_wol,
835899 	.get_eeprom_len		= ax88179_get_eeprom_len,
836900 	.get_eeprom		= ax88179_get_eeprom,
901
+	.set_eeprom		= ax88179_set_eeprom,
837902 	.get_eee		= ax88179_get_eee,
838903 	.set_eee		= ax88179_set_eee,
839904 	.nway_reset		= usbnet_nway_reset,
840905 	.get_link_ksettings	= ax88179_get_link_ksettings,
841906 	.set_link_ksettings	= ax88179_set_link_ksettings,
907
+	.get_ts_info		= ethtool_op_get_ts_info,
842908 };
843909 
844910 static void ax88179_set_multicast(struct net_device *net)
....@@ -1226,6 +1292,34 @@
12261292 	return 0;
12271293 }
12281294 
1295
+static void ax88179_get_mac_addr(struct usbnet *dev)
1296
+{
1297
+	u8 mac[ETH_ALEN];
1298
+
1299
+	memset(mac, 0, sizeof(mac));
1300
+
1301
+	/* Maybe the boot loader passed the MAC address via device tree */
1302
+	if (!eth_platform_get_mac_address(&dev->udev->dev, mac)) {
1303
+		netif_dbg(dev, ifup, dev->net,
1304
+			  "MAC address read from device tree");
1305
+	} else {
1306
+		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
1307
+				 ETH_ALEN, mac);
1308
+		netif_dbg(dev, ifup, dev->net,
1309
+			  "MAC address read from ASIX chip");
1310
+	}
1311
+
1312
+	if (is_valid_ether_addr(mac)) {
1313
+		memcpy(dev->net->dev_addr, mac, ETH_ALEN);
1314
+	} else {
1315
+		netdev_info(dev->net, "invalid MAC address, using random\n");
1316
+		eth_hw_addr_random(dev->net);
1317
+	}
1318
+
1319
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN, ETH_ALEN,
1320
+			  dev->net->dev_addr);
1321
+}
1322
+
12291323 static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
12301324 {
12311325 	u8 buf[5];
....@@ -1252,8 +1346,8 @@
12521346 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp);
12531347 	msleep(100);
12541348 
1255
-	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
1256
-			 ETH_ALEN, dev->net->dev_addr);
1349
+	/* Read MAC address from DTB or asix chip */
1350
+	ax88179_get_mac_addr(dev);
12571351 	memcpy(dev->net->perm_addr, dev->net->dev_addr, ETH_ALEN);
12581352 
12591353 	/* RX bulk configuration */
....@@ -1377,11 +1471,46 @@
13771471 	 * are bundled into this buffer and where we can find an array of
13781472 	 * per-packet metadata (which contains elements encoded into u16).
13791473 	 */
1474
+
1475
+	/* SKB contents for current firmware:
1476
+	 *   <packet 1> <padding>
1477
+	 *   ...
1478
+	 *   <packet N> <padding>
1479
+	 *   <per-packet metadata entry 1> <dummy header>
1480
+	 *   ...
1481
+	 *   <per-packet metadata entry N> <dummy header>
1482
+	 *   <padding2> <rx_hdr>
1483
+	 *
1484
+	 * where:
1485
+	 *   <packet N> contains pkt_len bytes:
1486
+	 *		2 bytes of IP alignment pseudo header
1487
+	 *		packet received
1488
+	 *   <per-packet metadata entry N> contains 4 bytes:
1489
+	 *		pkt_len and fields AX_RXHDR_*
1490
+	 *   <padding>	0-7 bytes to terminate at
1491
+	 *		8 bytes boundary (64-bit).
1492
+	 *   <padding2> 4 bytes to make rx_hdr terminate at
1493
+	 *		8 bytes boundary (64-bit)
1494
+	 *   <dummy-header> contains 4 bytes:
1495
+	 *		pkt_len=0 and AX_RXHDR_DROP_ERR
1496
+	 *   <rx-hdr>	contains 4 bytes:
1497
+	 *		pkt_cnt and hdr_off (offset of
1498
+	 *		  <per-packet metadata entry 1>)
1499
+	 *
1500
+	 * pkt_cnt is number of entrys in the per-packet metadata.
1501
+	 * In current firmware there is 2 entrys per packet.
1502
+	 * The first points to the packet and the
1503
+	 *  second is a dummy header.
1504
+	 * This was done probably to align fields in 64-bit and
1505
+	 *  maintain compatibility with old firmware.
1506
+	 * This code assumes that <dummy header> and <padding2> are
1507
+	 *  optional.
1508
+	 */
1509
+
13801510 	if (skb->len < 4)
13811511 		return 0;
13821512 	skb_trim(skb, skb->len - 4);
1383
-	memcpy(&rx_hdr, skb_tail_pointer(skb), 4);
1384
-	le32_to_cpus(&rx_hdr);
1513
+	rx_hdr = get_unaligned_le32(skb_tail_pointer(skb));
13851514 	pkt_cnt = (u16)rx_hdr;
13861515 	hdr_off = (u16)(rx_hdr >> 16);
13871516 
....@@ -1391,51 +1520,66 @@
13911520 	/* Make sure that the bounds of the metadata array are inside the SKB
13921521 	 * (and in front of the counter at the end).
13931522 	 */
1394
-	if (pkt_cnt * 2 + hdr_off > skb->len)
1523
+	if (pkt_cnt * 4 + hdr_off > skb->len)
13951524 		return 0;
13961525 	pkt_hdr = (u32 *)(skb->data + hdr_off);
13971526 
13981527 	/* Packets must not overlap the metadata array */
13991528 	skb_trim(skb, hdr_off);
14001529 
1401
-	for (; ; pkt_cnt--, pkt_hdr++) {
1530
+	for (; pkt_cnt > 0; pkt_cnt--, pkt_hdr++) {
1531
+		u16 pkt_len_plus_padd;
14021532 		u16 pkt_len;
14031533 
14041534 		le32_to_cpus(pkt_hdr);
14051535 		pkt_len = (*pkt_hdr >> 16) & 0x1fff;
1536
+		pkt_len_plus_padd = (pkt_len + 7) & 0xfff8;
14061537 
1407
-		if (pkt_len > skb->len)
1538
+		/* Skip dummy header used for alignment
1539
+		 */
1540
+		if (pkt_len == 0)
1541
+			continue;
1542
+
1543
+		if (pkt_len_plus_padd > skb->len)
14081544 			return 0;
14091545 
14101546 		/* Check CRC or runt packet */
1411
-		if (((*pkt_hdr & (AX_RXHDR_CRC_ERR | AX_RXHDR_DROP_ERR)) == 0) &&
1412
-		    pkt_len >= 2 + ETH_HLEN) {
1413
-			bool last = (pkt_cnt == 0);
1414
-
1415
-			if (last) {
1416
-				ax_skb = skb;
1417
-			} else {
1418
-				ax_skb = skb_clone(skb, GFP_ATOMIC);
1419
-				if (!ax_skb)
1420
-					return 0;
1421
-			}
1422
-			ax_skb->len = pkt_len;
1423
-			/* Skip IP alignment pseudo header */
1424
-			skb_pull(ax_skb, 2);
1425
-			skb_set_tail_pointer(ax_skb, ax_skb->len);
1426
-			ax_skb->truesize = pkt_len + sizeof(struct sk_buff);
1427
-			ax88179_rx_checksum(ax_skb, pkt_hdr);
1428
-
1429
-			if (last)
1430
-				return 1;
1431
-
1432
-			usbnet_skb_return(dev, ax_skb);
1547
+		if ((*pkt_hdr & (AX_RXHDR_CRC_ERR | AX_RXHDR_DROP_ERR)) ||
1548
+		    pkt_len < 2 + ETH_HLEN) {
1549
+			dev->net->stats.rx_errors++;
1550
+			skb_pull(skb, pkt_len_plus_padd);
1551
+			continue;
14331552 		}
14341553 
1435
-		/* Trim this packet away from the SKB */
1436
-		if (!skb_pull(skb, (pkt_len + 7) & 0xFFF8))
1554
+		/* last packet */
1555
+		if (pkt_len_plus_padd == skb->len) {
1556
+			skb_trim(skb, pkt_len);
1557
+
1558
+			/* Skip IP alignment pseudo header */
1559
+			skb_pull(skb, 2);
1560
+
1561
+			skb->truesize = SKB_TRUESIZE(pkt_len_plus_padd);
1562
+			ax88179_rx_checksum(skb, pkt_hdr);
1563
+			return 1;
1564
+		}
1565
+
1566
+		ax_skb = skb_clone(skb, GFP_ATOMIC);
1567
+		if (!ax_skb)
14371568 			return 0;
1569
+		skb_trim(ax_skb, pkt_len);
1570
+
1571
+		/* Skip IP alignment pseudo header */
1572
+		skb_pull(ax_skb, 2);
1573
+
1574
+		skb->truesize = pkt_len_plus_padd +
1575
+				SKB_DATA_ALIGN(sizeof(struct sk_buff));
1576
+		ax88179_rx_checksum(ax_skb, pkt_hdr);
1577
+		usbnet_skb_return(dev, ax_skb);
1578
+
1579
+		skb_pull(skb, pkt_len_plus_padd);
14381580 	}
1581
+
1582
+	return 0;
14391583 }
14401584 
14411585 static struct sk_buff *
....@@ -1445,6 +1589,7 @@
14451589 	int frame_size = dev->maxpacket;
14461590 	int mss = skb_shinfo(skb)->gso_size;
14471591 	int headroom;
1592
+	void *ptr;
14481593 
14491594 	tx_hdr1 = skb->len;
14501595 	tx_hdr2 = mss;
....@@ -1459,13 +1604,9 @@
14591604 		return NULL;
14601605 	}
14611606 
1462
-	skb_push(skb, 4);
1463
-	cpu_to_le32s(&tx_hdr2);
1464
-	skb_copy_to_linear_data(skb, &tx_hdr2, 4);
1465
-
1466
-	skb_push(skb, 4);
1467
-	cpu_to_le32s(&tx_hdr1);
1468
-	skb_copy_to_linear_data(skb, &tx_hdr1, 4);
1607
+	ptr = skb_push(skb, 8);
1608
+	put_unaligned_le32(tx_hdr1, ptr);
1609
+	put_unaligned_le32(tx_hdr2, ptr + 4);
14691610 
14701611 	return skb;
14711612 }
....@@ -1568,8 +1709,8 @@
15681709 	/* Ethernet PHY Auto Detach*/
15691710 	ax88179_auto_detach(dev, 0);
15701711 
1571
-	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN, ETH_ALEN,
1572
-			 dev->net->dev_addr);
1712
+	/* Read MAC address from DTB or asix chip */
1713
+	ax88179_get_mac_addr(dev);
15731714 
15741715 	/* RX bulk configuration */
15751716 	memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
....@@ -1751,6 +1892,32 @@
17511892 	.tx_fixup = ax88179_tx_fixup,
17521893 };
17531894 
1895
+static const struct driver_info toshiba_info = {
1896
+	.description = "Toshiba USB Ethernet Adapter",
1897
+	.bind	= ax88179_bind,
1898
+	.unbind = ax88179_unbind,
1899
+	.status = ax88179_status,
1900
+	.link_reset = ax88179_link_reset,
1901
+	.reset	= ax88179_reset,
1902
+	.stop = ax88179_stop,
1903
+	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
1904
+	.rx_fixup = ax88179_rx_fixup,
1905
+	.tx_fixup = ax88179_tx_fixup,
1906
+};
1907
+
1908
+static const struct driver_info mct_info = {
1909
+	.description = "MCT USB 3.0 Gigabit Ethernet Adapter",
1910
+	.bind	= ax88179_bind,
1911
+	.unbind	= ax88179_unbind,
1912
+	.status	= ax88179_status,
1913
+	.link_reset = ax88179_link_reset,
1914
+	.reset	= ax88179_reset,
1915
+	.stop	= ax88179_stop,
1916
+	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
1917
+	.rx_fixup = ax88179_rx_fixup,
1918
+	.tx_fixup = ax88179_tx_fixup,
1919
+};
1920
+
17541921 static const struct usb_device_id products[] = {
17551922 {
17561923 	/* ASIX AX88179 10/100/1000 */
....@@ -1784,6 +1951,14 @@
17841951 	/* Belkin B2B128 USB 3.0 Hub + Gigabit Ethernet Adapter */
17851952 	USB_DEVICE(0x050d, 0x0128),
17861953 	.driver_info = (unsigned long)&belkin_info,
1954
+}, {
1955
+	/* Toshiba USB 3.0 GBit Ethernet Adapter */
1956
+	USB_DEVICE(0x0930, 0x0a13),
1957
+	.driver_info = (unsigned long)&toshiba_info,
1958
+}, {
1959
+	/* Magic Control Technology U3-A9003 USB 3.0 Gigabit Ethernet Adapter */
1960
+	USB_DEVICE(0x0711, 0x0179),
1961
+	.driver_info = (unsigned long)&mct_info,
17871962 },
17881963 	{ },
17891964 };