2 * Copyright (c) 2013 Gerhard Sittig <gsi@denx.de>
3 * based on the U-Boot Asix driver as well as information
4 * from the Linux Moschip driver
6 * SPDX-License-Identifier: GPL-2.0+
10 * MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices
16 #include <linux/mii.h>
21 #include "usb_ether.h"
23 #define MCS7830_BASE_NAME "mcs"
25 #define USBCALL_TIMEOUT 1000
26 #define LINKSTATUS_TIMEOUT 5000 /* link status, connect timeout */
27 #define LINKSTATUS_TIMEOUT_RES 50 /* link status, resolution in msec */
29 #define MCS7830_RX_URB_SIZE 2048
32 #define MCS7830_WR_BREQ 0x0d
33 #define MCS7830_RD_BREQ 0x0e
35 /* register layout, numerical offset specs for USB API calls */
37 uint8_t multicast_hashes[8];
38 uint8_t packet_gap[2];
40 uint8_t phy_command[2];
41 uint8_t configuration;
42 uint8_t ether_address[6];
43 uint8_t frame_drop_count;
44 uint8_t pause_threshold;
46 #define REG_MULTICAST_HASH offsetof(struct mcs7830_regs, multicast_hashes)
47 #define REG_PHY_DATA offsetof(struct mcs7830_regs, phy_data)
48 #define REG_PHY_CMD offsetof(struct mcs7830_regs, phy_command)
49 #define REG_CONFIG offsetof(struct mcs7830_regs, configuration)
50 #define REG_ETHER_ADDR offsetof(struct mcs7830_regs, ether_address)
51 #define REG_FRAME_DROP_COUNTER offsetof(struct mcs7830_regs, frame_drop_count)
52 #define REG_PAUSE_THRESHOLD offsetof(struct mcs7830_regs, pause_threshold)
54 /* bit masks and default values for the above registers */
55 #define PHY_CMD1_READ 0x40
56 #define PHY_CMD1_WRITE 0x20
57 #define PHY_CMD1_PHYADDR 0x01
59 #define PHY_CMD2_PEND 0x80
60 #define PHY_CMD2_READY 0x40
63 #define CONF_SPEED100 0x40
64 #define CONF_FDX_ENABLE 0x20
65 #define CONF_RXENABLE 0x10
66 #define CONF_TXENABLE 0x08
67 #define CONF_SLEEPMODE 0x04
68 #define CONF_ALLMULTICAST 0x02
69 #define CONF_PROMISCUOUS 0x01
71 #define PAUSE_THRESHOLD_DEFAULT 0
73 /* bit masks for the status byte which follows received ethernet frames */
74 #define STAT_RX_FRAME_CORRECT 0x20
75 #define STAT_RX_LARGE_FRAME 0x10
76 #define STAT_RX_CRC_ERROR 0x08
77 #define STAT_RX_ALIGNMENT_ERROR 0x04
78 #define STAT_RX_LENGTH_ERROR 0x02
79 #define STAT_RX_SHORT_FRAME 0x01
82 * struct mcs7830_private - private driver data for an individual adapter
83 * @config: shadow for the network adapter's configuration register
84 * @mchash: shadow for the network adapter's multicast hash registers
86 struct mcs7830_private {
88 uint8_t rx_buf[MCS7830_RX_URB_SIZE];
89 struct ueth_data ueth;
96 * mcs7830_read_reg() - read a register of the network adapter
97 * @udev: network device to read from
98 * @idx: index of the register to start reading from
99 * @size: number of bytes to read
100 * @data: buffer to read into
101 * Return: zero upon success, negative upon error
103 static int mcs7830_read_reg(struct usb_device *udev, uint8_t idx,
104 uint16_t size, void *data)
107 ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, size);
109 debug("%s() idx=0x%04X sz=%d\n", __func__, idx, size);
111 len = usb_control_msg(udev,
112 usb_rcvctrlpipe(udev, 0),
114 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
118 debug("%s() len=%d != sz=%d\n", __func__, len, size);
121 memcpy(data, buf, size);
126 * mcs7830_write_reg() - write a register of the network adapter
127 * @udev: network device to write to
128 * @idx: index of the register to start writing to
129 * @size: number of bytes to write
130 * @data: buffer holding the data to write
131 * Return: zero upon success, negative upon error
133 static int mcs7830_write_reg(struct usb_device *udev, uint8_t idx,
134 uint16_t size, void *data)
137 ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, size);
139 debug("%s() idx=0x%04X sz=%d\n", __func__, idx, size);
141 memcpy(buf, data, size);
142 len = usb_control_msg(udev,
143 usb_sndctrlpipe(udev, 0),
145 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
149 debug("%s() len=%d != sz=%d\n", __func__, len, size);
156 * mcs7830_phy_emit_wait() - emit PHY read/write access, wait for its execution
157 * @udev: network device to talk to
158 * @rwflag: PHY_CMD1_READ or PHY_CMD1_WRITE opcode
159 * @index: number of the PHY register to read or write
160 * Return: zero upon success, negative upon error
162 static int mcs7830_phy_emit_wait(struct usb_device *udev,
163 uint8_t rwflag, uint8_t index)
169 /* send the PHY read/write request */
170 cmd[0] = rwflag | PHY_CMD1_PHYADDR;
171 cmd[1] = PHY_CMD2_PEND | (index & 0x1f);
172 rc = mcs7830_write_reg(udev, REG_PHY_CMD, sizeof(cmd), cmd);
176 /* wait for the response to become available (usually < 1ms) */
179 rc = mcs7830_read_reg(udev, REG_PHY_CMD, sizeof(cmd), cmd);
182 if (cmd[1] & PHY_CMD2_READY)
192 * mcs7830_read_phy() - read a PHY register of the network adapter
193 * @udev: network device to read from
194 * @index: index of the PHY register to read from
195 * Return: non-negative 16bit register content, negative upon error
197 static int mcs7830_read_phy(struct usb_device *udev, uint8_t index)
202 /* issue the PHY read request and wait for its execution */
203 rc = mcs7830_phy_emit_wait(udev, PHY_CMD1_READ, index);
207 /* fetch the PHY data which was read */
208 rc = mcs7830_read_reg(udev, REG_PHY_DATA, sizeof(val), &val);
211 rc = le16_to_cpu(val);
212 debug("%s(%d) => 0x%04X\n", __func__, index, rc);
217 * mcs7830_write_phy() - write a PHY register of the network adapter
218 * @udev: network device to write to
219 * @index: index of the PHY register to write to
220 * @val: value to write to the PHY register
221 * Return: zero upon success, negative upon error
223 static int mcs7830_write_phy(struct usb_device *udev, uint8_t index,
228 debug("%s(%d, 0x%04X)\n", __func__, index, val);
230 /* setup the PHY data which is to get written */
231 val = cpu_to_le16(val);
232 rc = mcs7830_write_reg(udev, REG_PHY_DATA, sizeof(val), &val);
236 /* issue the PHY write request and wait for its execution */
237 rc = mcs7830_phy_emit_wait(udev, PHY_CMD1_WRITE, index);
245 * mcs7830_write_config() - write to the network adapter's config register
246 * @udev: network device to write to
247 * @priv: private data
248 * Return: zero upon success, negative upon error
250 * the data which gets written is taken from the shadow config register
251 * within the device driver's private data
253 static int mcs7830_write_config(struct usb_device *udev,
254 struct mcs7830_private *priv)
258 debug("%s()\n", __func__);
260 rc = mcs7830_write_reg(udev, REG_CONFIG,
261 sizeof(priv->config), &priv->config);
263 debug("writing config to adapter failed\n");
271 * mcs7830_write_mchash() - write the network adapter's multicast filter
272 * @udev: network device to write to
273 * @priv: private data
274 * Return: zero upon success, negative upon error
276 * the data which gets written is taken from the shadow multicast hashes
277 * within the device driver's private data
279 static int mcs7830_write_mchash(struct usb_device *udev,
280 struct mcs7830_private *priv)
284 debug("%s()\n", __func__);
286 rc = mcs7830_write_reg(udev, REG_MULTICAST_HASH,
287 sizeof(priv->mchash), &priv->mchash);
289 debug("writing multicast hash to adapter failed\n");
297 * mcs7830_set_autoneg() - setup and trigger ethernet link autonegotiation
298 * @udev: network device to run link negotiation on
299 * Return: zero upon success, negative upon error
301 * the routine advertises available media and starts autonegotiation
303 static int mcs7830_set_autoneg(struct usb_device *udev)
308 debug("%s()\n", __func__);
311 * algorithm taken from the Linux driver, which took it from
312 * "the original mcs7830 version 1.4 driver":
314 * enable all media, reset BMCR, enable auto neg, restart
315 * auto neg while keeping the enable auto neg flag set
318 adv = ADVERTISE_PAUSE_CAP | ADVERTISE_ALL | ADVERTISE_CSMA;
319 rc = mcs7830_write_phy(udev, MII_ADVERTISE, adv);
323 rc = mcs7830_write_phy(udev, MII_BMCR, flg);
325 flg |= BMCR_ANENABLE;
327 rc = mcs7830_write_phy(udev, MII_BMCR, flg);
329 flg |= BMCR_ANRESTART;
331 rc = mcs7830_write_phy(udev, MII_BMCR, flg);
337 * mcs7830_get_rev() - identify a network adapter's chip revision
338 * @udev: network device to identify
339 * Return: non-negative number, reflecting the revision number
341 * currently, only "rev C and higher" and "below rev C" are needed, so
342 * the return value is #1 for "below rev C", and #2 for "rev C and above"
344 static int mcs7830_get_rev(struct usb_device *udev)
350 /* register 22 is readable in rev C and higher */
351 rc = mcs7830_read_reg(udev, REG_FRAME_DROP_COUNTER, sizeof(buf), buf);
356 debug("%s() rc=%d, rev=%d\n", __func__, rc, rev);
361 * mcs7830_apply_fixup() - identify an adapter and potentially apply fixups
362 * @udev: network device to identify and apply fixups to
363 * Return: zero upon success (no errors emitted from here)
365 * this routine identifies the network adapter's chip revision, and applies
366 * fixups for known issues
368 static int mcs7830_apply_fixup(struct usb_device *udev)
374 rev = mcs7830_get_rev(udev);
375 debug("%s() rev=%d\n", __func__, rev);
378 * rev C requires setting the pause threshold (the Linux driver
379 * is inconsistent, the implementation does it for "rev C
380 * exactly", the introductory comment says "rev C and above")
383 debug("%s: applying rev C fixup\n", __func__);
384 thr = PAUSE_THRESHOLD_DEFAULT;
385 for (i = 0; i < 2; i++) {
386 (void)mcs7830_write_reg(udev, REG_PAUSE_THRESHOLD,
396 * mcs7830_basic_reset() - bring the network adapter into a known first state
397 * @eth: network device to act upon
398 * Return: zero upon success, negative upon error
400 * this routine initializes the network adapter such that subsequent invocations
401 * of the interface callbacks can exchange ethernet frames; link negotiation is
402 * triggered from here already and continues in background
404 static int mcs7830_basic_reset(struct usb_device *udev,
405 struct mcs7830_private *priv)
409 debug("%s()\n", __func__);
412 * comment from the respective Linux driver, which
413 * unconditionally sets the ALLMULTICAST flag as well:
414 * should not be needed, but does not work otherwise
416 priv->config = CONF_TXENABLE;
417 priv->config |= CONF_ALLMULTICAST;
419 rc = mcs7830_set_autoneg(udev);
421 pr_err("setting autoneg failed\n");
425 rc = mcs7830_write_mchash(udev, priv);
427 pr_err("failed to set multicast hash\n");
431 rc = mcs7830_write_config(udev, priv);
433 pr_err("failed to set configuration\n");
437 rc = mcs7830_apply_fixup(udev);
439 pr_err("fixup application failed\n");
447 * mcs7830_read_mac() - read an ethernet adapter's MAC address
448 * @udev: network device to read from
449 * @enetaddr: place to put ethernet MAC address
450 * Return: zero upon success, negative upon error
452 * this routine fetches the MAC address stored within the ethernet adapter,
453 * and stores it in the ethernet interface's data structure
455 static int mcs7830_read_mac(struct usb_device *udev, unsigned char enetaddr[])
458 uint8_t buf[ETH_ALEN];
460 debug("%s()\n", __func__);
462 rc = mcs7830_read_reg(udev, REG_ETHER_ADDR, ETH_ALEN, buf);
464 debug("reading MAC from adapter failed\n");
468 memcpy(enetaddr, buf, ETH_ALEN);
472 static int mcs7830_write_mac_common(struct usb_device *udev,
473 unsigned char enetaddr[])
477 debug("%s()\n", __func__);
479 rc = mcs7830_write_reg(udev, REG_ETHER_ADDR, ETH_ALEN, enetaddr);
481 debug("writing MAC to adapter failed\n");
487 static int mcs7830_init_common(struct usb_device *udev)
492 debug("%s()\n", __func__);
496 have_link = mcs7830_read_phy(udev, MII_BMSR) & BMSR_LSTATUS;
499 udelay(LINKSTATUS_TIMEOUT_RES * 1000);
500 timeout += LINKSTATUS_TIMEOUT_RES;
501 } while (timeout < LINKSTATUS_TIMEOUT);
503 debug("ethernet link is down\n");
509 static int mcs7830_send_common(struct ueth_data *ueth, void *packet,
512 struct usb_device *udev = ueth->pusb_dev;
515 /* there is a status byte after the ethernet frame */
516 ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, PKTSIZE + sizeof(uint8_t));
518 memcpy(buf, packet, length);
519 rc = usb_bulk_msg(udev,
520 usb_sndbulkpipe(udev, ueth->ep_out),
521 &buf[0], length, &gotlen,
523 debug("%s() TX want len %d, got len %d, rc %d\n",
524 __func__, length, gotlen, rc);
528 static int mcs7830_recv_common(struct ueth_data *ueth, uint8_t *buf)
530 int rc, wantlen, gotlen;
533 debug("%s()\n", __func__);
535 /* fetch input data from the adapter */
536 wantlen = MCS7830_RX_URB_SIZE;
537 rc = usb_bulk_msg(ueth->pusb_dev,
538 usb_rcvbulkpipe(ueth->pusb_dev, ueth->ep_in),
539 &buf[0], wantlen, &gotlen,
541 debug("%s() RX want len %d, got len %d, rc %d\n",
542 __func__, wantlen, gotlen, rc);
544 pr_err("RX: failed to receive\n");
547 if (gotlen > wantlen) {
548 pr_err("RX: got too many bytes (%d)\n", gotlen);
553 * the bulk message that we received from USB contains exactly
554 * one ethernet frame and a trailing status byte
556 if (gotlen < sizeof(sts))
558 gotlen -= sizeof(sts);
561 if (sts == STAT_RX_FRAME_CORRECT) {
562 debug("%s() got a frame, len=%d\n", __func__, gotlen);
566 debug("RX: frame error (sts 0x%02X, %s %s %s %s %s)\n",
568 (sts & STAT_RX_LARGE_FRAME) ? "large" : "-",
569 (sts & STAT_RX_LENGTH_ERROR) ? "length" : "-",
570 (sts & STAT_RX_SHORT_FRAME) ? "short" : "-",
571 (sts & STAT_RX_CRC_ERROR) ? "crc" : "-",
572 (sts & STAT_RX_ALIGNMENT_ERROR) ? "align" : "-");
576 #ifndef CONFIG_DM_ETH
578 * mcs7830_init() - network interface's init callback
579 * @udev: network device to initialize
580 * @bd: board information
581 * Return: zero upon success, negative upon error
583 * after initial setup during probe() and get_info(), this init() callback
584 * ensures that the link is up and subsequent send() and recv() calls can
585 * exchange ethernet frames
587 static int mcs7830_init(struct eth_device *eth, bd_t *bd)
589 struct ueth_data *dev = eth->priv;
591 return mcs7830_init_common(dev->pusb_dev);
595 * mcs7830_send() - network interface's send callback
596 * @eth: network device to send the frame from
597 * @packet: ethernet frame content
598 * @length: ethernet frame length
599 * Return: zero upon success, negative upon error
601 * this routine send an ethernet frame out of the network interface
603 static int mcs7830_send(struct eth_device *eth, void *packet, int length)
605 struct ueth_data *dev = eth->priv;
607 return mcs7830_send_common(dev, packet, length);
611 * mcs7830_recv() - network interface's recv callback
612 * @eth: network device to receive frames from
613 * Return: zero upon success, negative upon error
615 * this routine checks for available ethernet frames that the network
616 * interface might have received, and notifies the network stack
618 static int mcs7830_recv(struct eth_device *eth)
620 ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, MCS7830_RX_URB_SIZE);
621 struct ueth_data *ueth = eth->priv;
624 len = mcs7830_recv_common(ueth, buf);
626 net_process_received_packet(buf, len);
634 * mcs7830_halt() - network interface's halt callback
635 * @eth: network device to cease operation of
638 * this routine is supposed to undo the effect of previous initialization and
639 * ethernet frames exchange; in this implementation it's a NOP
641 static void mcs7830_halt(struct eth_device *eth)
643 debug("%s()\n", __func__);
647 * mcs7830_write_mac() - write an ethernet adapter's MAC address
648 * @eth: network device to write to
649 * Return: zero upon success, negative upon error
651 * this routine takes the MAC address from the ethernet interface's data
652 * structure, and writes it into the ethernet adapter such that subsequent
653 * exchange of ethernet frames uses this address
655 static int mcs7830_write_mac(struct eth_device *eth)
657 struct ueth_data *ueth = eth->priv;
659 return mcs7830_write_mac_common(ueth->pusb_dev, eth->enetaddr);
663 * mcs7830_iface_idx - index of detected network interfaces
665 * this counter keeps track of identified supported interfaces,
666 * to assign unique names as more interfaces are found
668 static int mcs7830_iface_idx;
671 * mcs7830_eth_before_probe() - network driver's before_probe callback
674 * this routine initializes driver's internal data in preparation of
675 * subsequent probe callbacks
677 void mcs7830_eth_before_probe(void)
679 mcs7830_iface_idx = 0;
683 * struct mcs7830_dongle - description of a supported Moschip ethernet dongle
684 * @vendor: 16bit USB vendor identification
685 * @product: 16bit USB product identification
687 * this structure describes a supported USB ethernet dongle by means of the
688 * vendor and product codes found during USB enumeration; no flags are held
689 * here since all supported dongles have identical behaviour, and required
690 * fixups get determined at runtime, such that no manual configuration is
693 struct mcs7830_dongle {
699 * mcs7830_dongles - the list of supported Moschip based USB ethernet dongles
701 static const struct mcs7830_dongle mcs7830_dongles[] = {
702 { 0x9710, 0x7832, }, /* Moschip 7832 */
703 { 0x9710, 0x7830, }, /* Moschip 7830 */
704 { 0x9710, 0x7730, }, /* Moschip 7730 */
705 { 0x0df6, 0x0021, }, /* Sitecom LN 30 */
709 * mcs7830_eth_probe() - network driver's probe callback
710 * @dev: detected USB device to check
711 * @ifnum: detected USB interface to check
712 * @ss: USB ethernet data structure to fill in upon match
713 * Return: #1 upon match, #0 upon mismatch or error
715 * this routine checks whether the found USB device is supported by
716 * this ethernet driver, and upon match fills in the USB ethernet
717 * data structure which later is passed to the get_info callback
719 int mcs7830_eth_probe(struct usb_device *dev, unsigned int ifnum,
720 struct ueth_data *ss)
722 struct usb_interface *iface;
723 struct usb_interface_descriptor *iface_desc;
725 struct mcs7830_private *priv;
726 int ep_in_found, ep_out_found, ep_intr_found;
728 debug("%s()\n", __func__);
730 /* iterate the list of supported dongles */
731 iface = &dev->config.if_desc[ifnum];
732 iface_desc = &iface->desc;
733 for (i = 0; i < ARRAY_SIZE(mcs7830_dongles); i++) {
734 if (dev->descriptor.idVendor == mcs7830_dongles[i].vendor &&
735 dev->descriptor.idProduct == mcs7830_dongles[i].product)
738 if (i == ARRAY_SIZE(mcs7830_dongles))
740 debug("detected USB ethernet device: %04X:%04X\n",
741 dev->descriptor.idVendor, dev->descriptor.idProduct);
743 /* fill in driver private data */
744 priv = calloc(1, sizeof(*priv));
748 /* fill in the ueth_data structure, attach private data */
749 memset(ss, 0, sizeof(*ss));
752 ss->subclass = iface_desc->bInterfaceSubClass;
753 ss->protocol = iface_desc->bInterfaceProtocol;
757 * a minimum of three endpoints is expected: in (bulk),
758 * out (bulk), and interrupt; ignore all others
760 ep_in_found = ep_out_found = ep_intr_found = 0;
761 for (i = 0; i < iface_desc->bNumEndpoints; i++) {
762 uint8_t eptype, epaddr;
765 eptype = iface->ep_desc[i].bmAttributes;
766 eptype &= USB_ENDPOINT_XFERTYPE_MASK;
768 epaddr = iface->ep_desc[i].bEndpointAddress;
769 is_input = epaddr & USB_DIR_IN;
770 epaddr &= USB_ENDPOINT_NUMBER_MASK;
772 if (eptype == USB_ENDPOINT_XFER_BULK) {
773 if (is_input && !ep_in_found) {
777 if (!is_input && !ep_out_found) {
783 if (eptype == USB_ENDPOINT_XFER_INT) {
784 if (is_input && !ep_intr_found) {
786 ss->irqinterval = iface->ep_desc[i].bInterval;
791 debug("endpoints: in %d, out %d, intr %d\n",
792 ss->ep_in, ss->ep_out, ss->ep_int);
794 /* apply basic sanity checks */
795 if (usb_set_interface(dev, iface_desc->bInterfaceNumber, 0) ||
796 !ss->ep_in || !ss->ep_out || !ss->ep_int) {
797 debug("device probe incomplete\n");
806 * mcs7830_eth_get_info() - network driver's get_info callback
807 * @dev: detected USB device
808 * @ss: USB ethernet data structure filled in at probe()
809 * @eth: ethernet interface data structure to fill in
810 * Return: #1 upon success, #0 upon error
812 * this routine registers the mandatory init(), send(), recv(), and
813 * halt() callbacks with the ethernet interface, can register the
814 * optional write_hwaddr() callback with the ethernet interface,
815 * and initiates configuration of the interface such that subsequent
816 * calls to those callbacks results in network communication
818 int mcs7830_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
819 struct eth_device *eth)
821 debug("%s()\n", __func__);
823 debug("%s: missing parameter.\n", __func__);
827 snprintf(eth->name, sizeof(eth->name), "%s%d",
828 MCS7830_BASE_NAME, mcs7830_iface_idx++);
829 eth->init = mcs7830_init;
830 eth->send = mcs7830_send;
831 eth->recv = mcs7830_recv;
832 eth->halt = mcs7830_halt;
833 eth->write_hwaddr = mcs7830_write_mac;
836 if (mcs7830_basic_reset(ss->pusb_dev, ss->dev_priv))
839 if (mcs7830_read_mac(ss->pusb_dev, eth->enetaddr))
841 debug("MAC %pM\n", eth->enetaddr);
849 static int mcs7830_eth_start(struct udevice *dev)
851 struct usb_device *udev = dev_get_parent_priv(dev);
853 return mcs7830_init_common(udev);
856 void mcs7830_eth_stop(struct udevice *dev)
858 debug("** %s()\n", __func__);
861 int mcs7830_eth_send(struct udevice *dev, void *packet, int length)
863 struct mcs7830_private *priv = dev_get_priv(dev);
864 struct ueth_data *ueth = &priv->ueth;
866 return mcs7830_send_common(ueth, packet, length);
869 int mcs7830_eth_recv(struct udevice *dev, int flags, uchar **packetp)
871 struct mcs7830_private *priv = dev_get_priv(dev);
872 struct ueth_data *ueth = &priv->ueth;
875 len = mcs7830_recv_common(ueth, priv->rx_buf);
876 *packetp = priv->rx_buf;
881 static int mcs7830_free_pkt(struct udevice *dev, uchar *packet, int packet_len)
883 struct mcs7830_private *priv = dev_get_priv(dev);
885 packet_len = ALIGN(packet_len, 4);
886 usb_ether_advance_rxbuf(&priv->ueth, sizeof(u32) + packet_len);
891 int mcs7830_write_hwaddr(struct udevice *dev)
893 struct usb_device *udev = dev_get_parent_priv(dev);
894 struct eth_pdata *pdata = dev_get_platdata(dev);
896 return mcs7830_write_mac_common(udev, pdata->enetaddr);
899 static int mcs7830_eth_probe(struct udevice *dev)
901 struct usb_device *udev = dev_get_parent_priv(dev);
902 struct mcs7830_private *priv = dev_get_priv(dev);
903 struct eth_pdata *pdata = dev_get_platdata(dev);
904 struct ueth_data *ueth = &priv->ueth;
906 if (mcs7830_basic_reset(udev, priv))
909 if (mcs7830_read_mac(udev, pdata->enetaddr))
912 return usb_ether_register(dev, ueth, MCS7830_RX_URB_SIZE);
915 static const struct eth_ops mcs7830_eth_ops = {
916 .start = mcs7830_eth_start,
917 .send = mcs7830_eth_send,
918 .recv = mcs7830_eth_recv,
919 .free_pkt = mcs7830_free_pkt,
920 .stop = mcs7830_eth_stop,
921 .write_hwaddr = mcs7830_write_hwaddr,
924 U_BOOT_DRIVER(mcs7830_eth) = {
925 .name = "mcs7830_eth",
927 .probe = mcs7830_eth_probe,
928 .ops = &mcs7830_eth_ops,
929 .priv_auto_alloc_size = sizeof(struct mcs7830_private),
930 .platdata_auto_alloc_size = sizeof(struct eth_pdata),
931 .flags = DM_FLAG_ALLOC_PRIV_DMA,
934 static const struct usb_device_id mcs7830_eth_id_table[] = {
935 { USB_DEVICE(0x9710, 0x7832) }, /* Moschip 7832 */
936 { USB_DEVICE(0x9710, 0x7830), }, /* Moschip 7830 */
937 { USB_DEVICE(0x9710, 0x7730), }, /* Moschip 7730 */
938 { USB_DEVICE(0x0df6, 0x0021), }, /* Sitecom LN 30 */
939 { } /* Terminating entry */
942 U_BOOT_USB_DEVICE(mcs7830_eth, mcs7830_eth_id_table);