1 // SPDX-License-Identifier: GPL-2.0-or-later
9  * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
11  * Copyright (c) 2002-2003 TiVo Inc.
15  * 2010-12-19: add 7832 USB PID ("functionality same as MCS7830"),
19  * - support HIF_REG_CONFIG_SLEEPMODE/HIF_REG_CONFIG_TXENABLE (via autopm?)
20  * - implement ethtool_ops get_pauseparam/set_pauseparam
22  * - implement get_eeprom/[set_eeprom]
23  * - switch PHY on/off on ifup/ifdown (perhaps in usbnet.c, via MII)
24  * - mcs7830_get_regs() handling is weird: for rev 2 we return 32 regs,
26  * - anything else?
95 	MCS7830_RX_ALIGNMENT_ERROR	= 0x04, /* non-even number of nibbles */
107 static const char driver_name[] = "MOSCHIP usb-ethernet driver";
118 		return -ENODATA;  in mcs7830_get_reg()
160 		return -EBUSY;  in mcs7830_set_mac_address()
162 	if (!is_valid_ether_addr(addr->sa_data))  in mcs7830_set_mac_address()
163 		return -EADDRNOTAVAIL;  in mcs7830_set_mac_address()
165 	ret = mcs7830_hif_set_mac_address(dev, addr->sa_data);  in mcs7830_set_mac_address()
170 	/* it worked --> adopt it on netdev side */  in mcs7830_set_mac_address()
171 	eth_hw_addr_set(netdev, addr->sa_data);  in mcs7830_set_mac_address()
187 	mutex_lock(&dev->phy_mutex);  in mcs7830_read_phy()
198 		ret = -EIO;  in mcs7830_read_phy()
209 	dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n",  in mcs7830_read_phy()
212 	mutex_unlock(&dev->phy_mutex);  in mcs7830_read_phy()
227 	mutex_lock(&dev->phy_mutex);  in mcs7830_write_phy()
245 		ret = -EIO;  in mcs7830_write_phy()
252 	dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n",  in mcs7830_write_phy()
255 	mutex_unlock(&dev->phy_mutex);  in mcs7830_write_phy()
272 	/* Enable Auto Neg */  in mcs7830_set_autoneg()
275 	/* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */  in mcs7830_set_autoneg()
302 	int retry;  in mcs7830_rev_C_fixup()  local
304 	for (retry = 0; retry < 2; retry++) {  in mcs7830_rev_C_fixup()
306 			dev_info(&dev->udev->dev, "applying rev.C fixup\n");  in mcs7830_rev_C_fixup()
331 	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);  in mcs7830_ioctl()
336 	return (struct mcs7830_data *)&dev->data;  in mcs7830_get_data()
343 				sizeof data->multi_filter,  in mcs7830_hif_update_multicast_hash()
344 				data->multi_filter);  in mcs7830_hif_update_multicast_hash()
349 	/* implementation specific to data->config  in mcs7830_hif_update_config()
350            (argument needs to be heap-based anyway - USB DMA!) */  in mcs7830_hif_update_config()
352 	mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config);  in mcs7830_hif_update_config()
360 	memset(data->multi_filter, 0, sizeof data->multi_filter);  in mcs7830_data_set_multicast()
362 	data->config = HIF_REG_CONFIG_TXENABLE;  in mcs7830_data_set_multicast()
365 	data->config |= HIF_REG_CONFIG_ALLMULTICAST;  in mcs7830_data_set_multicast()
367 	if (net->flags & IFF_PROMISC) {  in mcs7830_data_set_multicast()
368 		data->config |= HIF_REG_CONFIG_PROMISCUOUS;  in mcs7830_data_set_multicast()
369 	} else if (net->flags & IFF_ALLMULTI ||  in mcs7830_data_set_multicast()
371 		data->config |= HIF_REG_CONFIG_ALLMULTICAST;  in mcs7830_data_set_multicast()
375 		/* We use the 20 byte dev->data  in mcs7830_data_set_multicast()
384 			crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;  in mcs7830_data_set_multicast()
385 			data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7);  in mcs7830_data_set_multicast()
394 	/* re-configure known MAC (suspend case etc.) */  in mcs7830_apply_base_config()
395 	ret = mcs7830_hif_set_mac_address(dev, dev->net->dev_addr);  in mcs7830_apply_base_config()
397 		dev_info(&dev->udev->dev, "Cannot set MAC address\n");  in mcs7830_apply_base_config()
404 		dev_info(&dev->udev->dev, "Cannot set autoneg\n");  in mcs7830_apply_base_config()
450 	regs->version = mcs7830_get_rev(dev);  in mcs7830_get_regs()
451 	mcs7830_get_reg(dev, 0, regs->len, data);  in mcs7830_get_regs()
483 	struct net_device *net = dev->net;  in mcs7830_bind()
486 	int retry;  in mcs7830_bind()  local
489 	ret = -EINVAL;  in mcs7830_bind()
490 	for (retry = 0; retry < 5 && ret; retry++)  in mcs7830_bind()
493 		dev_warn(&dev->udev->dev, "Cannot read MAC address\n");  in mcs7830_bind()
504 	net->ethtool_ops = &mcs7830_ethtool_ops;  in mcs7830_bind()
505 	net->netdev_ops = &mcs7830_netdev_ops;  in mcs7830_bind()
508 	dev->rx_urb_size = ETH_FRAME_LEN + 1;  in mcs7830_bind()
510 	dev->mii.mdio_read = mcs7830_mdio_read;  in mcs7830_bind()
511 	dev->mii.mdio_write = mcs7830_mdio_write;  in mcs7830_bind()
512 	dev->mii.dev = net;  in mcs7830_bind()
513 	dev->mii.phy_id_mask = 0x3f;  in mcs7830_bind()
514 	dev->mii.reg_num_mask = 0x1f;  in mcs7830_bind()
515 	dev->mii.phy_id = *((u8 *) net->dev_addr + 1);  in mcs7830_bind()
528 	if (skb->len < dev->net->hard_header_len) {  in mcs7830_rx_fixup()
529 		dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");  in mcs7830_rx_fixup()
533 	skb_trim(skb, skb->len - 1);  in mcs7830_rx_fixup()
534 	status = skb->data[skb->len];  in mcs7830_rx_fixup()
537 		dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status);  in mcs7830_rx_fixup()
541 		dev->net->stats.rx_errors++;  in mcs7830_rx_fixup()
546 			dev->net->stats.rx_length_errors++;  in mcs7830_rx_fixup()
548 			dev->net->stats.rx_frame_errors++;  in mcs7830_rx_fixup()
550 			dev->net->stats.rx_crc_errors++;  in mcs7830_rx_fixup()
553 	return skb->len > 0;  in mcs7830_rx_fixup()
558 	u8 *buf = urb->transfer_buffer;  in mcs7830_status()
561 	if (urb->actual_length < 16)  in mcs7830_status()
565 	link_changed = netif_carrier_ok(dev->net) != link;  in mcs7830_status()
568 		netdev_dbg(dev->net, "Link Status is: %d\n", link);  in mcs7830_status()
573 	.description	= "MOSCHIP 7830/7832/7730 usb-NET adapter",
583 	.description    = "Sitecom LN-30 usb-NET adapter",
615 	/* YES, this function is successful enough that ethtool -d  in mcs7830_reset_resume()
616            does show same output pre-/post-suspend */  in mcs7830_reset_resume()