u-boot/drivers/usb/eth/mcs7830.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

942 lines
25 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2013 Gerhard Sittig <gsi@denx.de>
* based on the U-Boot Asix driver as well as information
* from the Linux Moschip driver
*/
/*
* MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <linux/mii.h>
#include <malloc.h>
#include <memalign.h>
#include <usb.h>
#include "usb_ether.h"
#define MCS7830_BASE_NAME "mcs"
#define USBCALL_TIMEOUT 1000
#define LINKSTATUS_TIMEOUT 5000 /* link status, connect timeout */
#define LINKSTATUS_TIMEOUT_RES 50 /* link status, resolution in msec */
#define MCS7830_RX_URB_SIZE 2048
/* command opcodes */
#define MCS7830_WR_BREQ 0x0d
#define MCS7830_RD_BREQ 0x0e
/* register layout, numerical offset specs for USB API calls */
struct mcs7830_regs {
uint8_t multicast_hashes[8];
uint8_t packet_gap[2];
uint8_t phy_data[2];
uint8_t phy_command[2];
uint8_t configuration;
uint8_t ether_address[6];
uint8_t frame_drop_count;
uint8_t pause_threshold;
};
#define REG_MULTICAST_HASH offsetof(struct mcs7830_regs, multicast_hashes)
#define REG_PHY_DATA offsetof(struct mcs7830_regs, phy_data)
#define REG_PHY_CMD offsetof(struct mcs7830_regs, phy_command)
#define REG_CONFIG offsetof(struct mcs7830_regs, configuration)
#define REG_ETHER_ADDR offsetof(struct mcs7830_regs, ether_address)
#define REG_FRAME_DROP_COUNTER offsetof(struct mcs7830_regs, frame_drop_count)
#define REG_PAUSE_THRESHOLD offsetof(struct mcs7830_regs, pause_threshold)
/* bit masks and default values for the above registers */
#define PHY_CMD1_READ 0x40
#define PHY_CMD1_WRITE 0x20
#define PHY_CMD1_PHYADDR 0x01
#define PHY_CMD2_PEND 0x80
#define PHY_CMD2_READY 0x40
#define CONF_CFG 0x80
#define CONF_SPEED100 0x40
#define CONF_FDX_ENABLE 0x20
#define CONF_RXENABLE 0x10
#define CONF_TXENABLE 0x08
#define CONF_SLEEPMODE 0x04
#define CONF_ALLMULTICAST 0x02
#define CONF_PROMISCUOUS 0x01
#define PAUSE_THRESHOLD_DEFAULT 0
/* bit masks for the status byte which follows received ethernet frames */
#define STAT_RX_FRAME_CORRECT 0x20
#define STAT_RX_LARGE_FRAME 0x10
#define STAT_RX_CRC_ERROR 0x08
#define STAT_RX_ALIGNMENT_ERROR 0x04
#define STAT_RX_LENGTH_ERROR 0x02
#define STAT_RX_SHORT_FRAME 0x01
/*
* struct mcs7830_private - private driver data for an individual adapter
* @config: shadow for the network adapter's configuration register
* @mchash: shadow for the network adapter's multicast hash registers
*/
struct mcs7830_private {
#ifdef CONFIG_DM_ETH
uint8_t rx_buf[MCS7830_RX_URB_SIZE];
struct ueth_data ueth;
#endif
uint8_t config;
uint8_t mchash[8];
};
/*
* mcs7830_read_reg() - read a register of the network adapter
* @udev: network device to read from
* @idx: index of the register to start reading from
* @size: number of bytes to read
* @data: buffer to read into
* Return: zero upon success, negative upon error
*/
static int mcs7830_read_reg(struct usb_device *udev, uint8_t idx,
uint16_t size, void *data)
{
int len;
ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, size);
debug("%s() idx=0x%04X sz=%d\n", __func__, idx, size);
len = usb_control_msg(udev,
usb_rcvctrlpipe(udev, 0),
MCS7830_RD_BREQ,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, idx, buf, size,
USBCALL_TIMEOUT);
if (len != size) {
debug("%s() len=%d != sz=%d\n", __func__, len, size);
return -EIO;
}
memcpy(data, buf, size);
return 0;
}
/*
* mcs7830_write_reg() - write a register of the network adapter
* @udev: network device to write to
* @idx: index of the register to start writing to
* @size: number of bytes to write
* @data: buffer holding the data to write
* Return: zero upon success, negative upon error
*/
static int mcs7830_write_reg(struct usb_device *udev, uint8_t idx,
uint16_t size, void *data)
{
int len;
ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, size);
debug("%s() idx=0x%04X sz=%d\n", __func__, idx, size);
memcpy(buf, data, size);
len = usb_control_msg(udev,
usb_sndctrlpipe(udev, 0),
MCS7830_WR_BREQ,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, idx, buf, size,
USBCALL_TIMEOUT);
if (len != size) {
debug("%s() len=%d != sz=%d\n", __func__, len, size);
return -EIO;
}
return 0;
}
/*
* mcs7830_phy_emit_wait() - emit PHY read/write access, wait for its execution
* @udev: network device to talk to
* @rwflag: PHY_CMD1_READ or PHY_CMD1_WRITE opcode
* @index: number of the PHY register to read or write
* Return: zero upon success, negative upon error
*/
static int mcs7830_phy_emit_wait(struct usb_device *udev,
uint8_t rwflag, uint8_t index)
{
int rc;
int retry;
uint8_t cmd[2];
/* send the PHY read/write request */
cmd[0] = rwflag | PHY_CMD1_PHYADDR;
cmd[1] = PHY_CMD2_PEND | (index & 0x1f);
rc = mcs7830_write_reg(udev, REG_PHY_CMD, sizeof(cmd), cmd);
if (rc < 0)
return rc;
/* wait for the response to become available (usually < 1ms) */
retry = 10;
do {
rc = mcs7830_read_reg(udev, REG_PHY_CMD, sizeof(cmd), cmd);
if (rc < 0)
return rc;
if (cmd[1] & PHY_CMD2_READY)
return 0;
if (!retry--)
return -ETIMEDOUT;
mdelay(1);
} while (1);
/* UNREACH */
}
/*
* mcs7830_read_phy() - read a PHY register of the network adapter
* @udev: network device to read from
* @index: index of the PHY register to read from
* Return: non-negative 16bit register content, negative upon error
*/
static int mcs7830_read_phy(struct usb_device *udev, uint8_t index)
{
int rc;
uint16_t val;
/* issue the PHY read request and wait for its execution */
rc = mcs7830_phy_emit_wait(udev, PHY_CMD1_READ, index);
if (rc < 0)
return rc;
/* fetch the PHY data which was read */
rc = mcs7830_read_reg(udev, REG_PHY_DATA, sizeof(val), &val);
if (rc < 0)
return rc;
rc = le16_to_cpu(val);
debug("%s(%d) => 0x%04X\n", __func__, index, rc);
return rc;
}
/*
* mcs7830_write_phy() - write a PHY register of the network adapter
* @udev: network device to write to
* @index: index of the PHY register to write to
* @val: value to write to the PHY register
* Return: zero upon success, negative upon error
*/
static int mcs7830_write_phy(struct usb_device *udev, uint8_t index,
uint16_t val)
{
int rc;
debug("%s(%d, 0x%04X)\n", __func__, index, val);
/* setup the PHY data which is to get written */
val = cpu_to_le16(val);
rc = mcs7830_write_reg(udev, REG_PHY_DATA, sizeof(val), &val);
if (rc < 0)
return rc;
/* issue the PHY write request and wait for its execution */
rc = mcs7830_phy_emit_wait(udev, PHY_CMD1_WRITE, index);
if (rc < 0)
return rc;
return 0;
}
/*
* mcs7830_write_config() - write to the network adapter's config register
* @udev: network device to write to
* @priv: private data
* Return: zero upon success, negative upon error
*
* the data which gets written is taken from the shadow config register
* within the device driver's private data
*/
static int mcs7830_write_config(struct usb_device *udev,
struct mcs7830_private *priv)
{
int rc;
debug("%s()\n", __func__);
rc = mcs7830_write_reg(udev, REG_CONFIG,
sizeof(priv->config), &priv->config);
if (rc < 0) {
debug("writing config to adapter failed\n");
return rc;
}
return 0;
}
/*
* mcs7830_write_mchash() - write the network adapter's multicast filter
* @udev: network device to write to
* @priv: private data
* Return: zero upon success, negative upon error
*
* the data which gets written is taken from the shadow multicast hashes
* within the device driver's private data
*/
static int mcs7830_write_mchash(struct usb_device *udev,
struct mcs7830_private *priv)
{
int rc;
debug("%s()\n", __func__);
rc = mcs7830_write_reg(udev, REG_MULTICAST_HASH,
sizeof(priv->mchash), &priv->mchash);
if (rc < 0) {
debug("writing multicast hash to adapter failed\n");
return rc;
}
return 0;
}
/*
* mcs7830_set_autoneg() - setup and trigger ethernet link autonegotiation
* @udev: network device to run link negotiation on
* Return: zero upon success, negative upon error
*
* the routine advertises available media and starts autonegotiation
*/
static int mcs7830_set_autoneg(struct usb_device *udev)
{
int adv, flg;
int rc;
debug("%s()\n", __func__);
/*
* algorithm taken from the Linux driver, which took it from
* "the original mcs7830 version 1.4 driver":
*
* enable all media, reset BMCR, enable auto neg, restart
* auto neg while keeping the enable auto neg flag set
*/
adv = ADVERTISE_PAUSE_CAP | ADVERTISE_ALL | ADVERTISE_CSMA;
rc = mcs7830_write_phy(udev, MII_ADVERTISE, adv);
flg = 0;
if (!rc)
rc = mcs7830_write_phy(udev, MII_BMCR, flg);
flg |= BMCR_ANENABLE;
if (!rc)
rc = mcs7830_write_phy(udev, MII_BMCR, flg);
flg |= BMCR_ANRESTART;
if (!rc)
rc = mcs7830_write_phy(udev, MII_BMCR, flg);
return rc;
}
/*
* mcs7830_get_rev() - identify a network adapter's chip revision
* @udev: network device to identify
* Return: non-negative number, reflecting the revision number
*
* currently, only "rev C and higher" and "below rev C" are needed, so
* the return value is #1 for "below rev C", and #2 for "rev C and above"
*/
static int mcs7830_get_rev(struct usb_device *udev)
{
uint8_t buf[2];
int rc;
int rev;
/* register 22 is readable in rev C and higher */
rc = mcs7830_read_reg(udev, REG_FRAME_DROP_COUNTER, sizeof(buf), buf);
if (rc < 0)
rev = 1;
else
rev = 2;
debug("%s() rc=%d, rev=%d\n", __func__, rc, rev);
return rev;
}
/*
* mcs7830_apply_fixup() - identify an adapter and potentially apply fixups
* @udev: network device to identify and apply fixups to
* Return: zero upon success (no errors emitted from here)
*
* this routine identifies the network adapter's chip revision, and applies
* fixups for known issues
*/
static int mcs7830_apply_fixup(struct usb_device *udev)
{
int rev;
int i;
uint8_t thr;
rev = mcs7830_get_rev(udev);
debug("%s() rev=%d\n", __func__, rev);
/*
* rev C requires setting the pause threshold (the Linux driver
* is inconsistent, the implementation does it for "rev C
* exactly", the introductory comment says "rev C and above")
*/
if (rev == 2) {
debug("%s: applying rev C fixup\n", __func__);
thr = PAUSE_THRESHOLD_DEFAULT;
for (i = 0; i < 2; i++) {
(void)mcs7830_write_reg(udev, REG_PAUSE_THRESHOLD,
sizeof(thr), &thr);
mdelay(1);
}
}
return 0;
}
/*
* mcs7830_basic_reset() - bring the network adapter into a known first state
* @eth: network device to act upon
* Return: zero upon success, negative upon error
*
* this routine initializes the network adapter such that subsequent invocations
* of the interface callbacks can exchange ethernet frames; link negotiation is
* triggered from here already and continues in background
*/
static int mcs7830_basic_reset(struct usb_device *udev,
struct mcs7830_private *priv)
{
int rc;
debug("%s()\n", __func__);
/*
* comment from the respective Linux driver, which
* unconditionally sets the ALLMULTICAST flag as well:
* should not be needed, but does not work otherwise
*/
priv->config = CONF_TXENABLE;
priv->config |= CONF_ALLMULTICAST;
rc = mcs7830_set_autoneg(udev);
if (rc < 0) {
pr_err("setting autoneg failed\n");
return rc;
}
rc = mcs7830_write_mchash(udev, priv);
if (rc < 0) {
pr_err("failed to set multicast hash\n");
return rc;
}
rc = mcs7830_write_config(udev, priv);
if (rc < 0) {
pr_err("failed to set configuration\n");
return rc;
}
rc = mcs7830_apply_fixup(udev);
if (rc < 0) {
pr_err("fixup application failed\n");
return rc;
}
return 0;
}
/*
* mcs7830_read_mac() - read an ethernet adapter's MAC address
* @udev: network device to read from
* @enetaddr: place to put ethernet MAC address
* Return: zero upon success, negative upon error
*
* this routine fetches the MAC address stored within the ethernet adapter,
* and stores it in the ethernet interface's data structure
*/
static int mcs7830_read_mac(struct usb_device *udev, unsigned char enetaddr[])
{
int rc;
uint8_t buf[ETH_ALEN];
debug("%s()\n", __func__);
rc = mcs7830_read_reg(udev, REG_ETHER_ADDR, ETH_ALEN, buf);
if (rc < 0) {
debug("reading MAC from adapter failed\n");
return rc;
}
memcpy(enetaddr, buf, ETH_ALEN);
return 0;
}
static int mcs7830_write_mac_common(struct usb_device *udev,
unsigned char enetaddr[])
{
int rc;
debug("%s()\n", __func__);
rc = mcs7830_write_reg(udev, REG_ETHER_ADDR, ETH_ALEN, enetaddr);
if (rc < 0) {
debug("writing MAC to adapter failed\n");
return rc;
}
return 0;
}
static int mcs7830_init_common(struct usb_device *udev)
{
int timeout;
int have_link;
debug("%s()\n", __func__);
timeout = 0;
do {
have_link = mcs7830_read_phy(udev, MII_BMSR) & BMSR_LSTATUS;
if (have_link)
break;
udelay(LINKSTATUS_TIMEOUT_RES * 1000);
timeout += LINKSTATUS_TIMEOUT_RES;
} while (timeout < LINKSTATUS_TIMEOUT);
if (!have_link) {
debug("ethernet link is down\n");
return -ETIMEDOUT;
}
return 0;
}
static int mcs7830_send_common(struct ueth_data *ueth, void *packet,
int length)
{
struct usb_device *udev = ueth->pusb_dev;
int rc;
int gotlen;
/* there is a status byte after the ethernet frame */
ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, PKTSIZE + sizeof(uint8_t));
memcpy(buf, packet, length);
rc = usb_bulk_msg(udev,
usb_sndbulkpipe(udev, ueth->ep_out),
&buf[0], length, &gotlen,
USBCALL_TIMEOUT);
debug("%s() TX want len %d, got len %d, rc %d\n",
__func__, length, gotlen, rc);
return rc;
}
static int mcs7830_recv_common(struct ueth_data *ueth, uint8_t *buf)
{
int rc, wantlen, gotlen;
uint8_t sts;
debug("%s()\n", __func__);
/* fetch input data from the adapter */
wantlen = MCS7830_RX_URB_SIZE;
rc = usb_bulk_msg(ueth->pusb_dev,
usb_rcvbulkpipe(ueth->pusb_dev, ueth->ep_in),
&buf[0], wantlen, &gotlen,
USBCALL_TIMEOUT);
debug("%s() RX want len %d, got len %d, rc %d\n",
__func__, wantlen, gotlen, rc);
if (rc != 0) {
pr_err("RX: failed to receive\n");
return rc;
}
if (gotlen > wantlen) {
pr_err("RX: got too many bytes (%d)\n", gotlen);
return -EIO;
}
/*
* the bulk message that we received from USB contains exactly
* one ethernet frame and a trailing status byte
*/
if (gotlen < sizeof(sts))
return -EIO;
gotlen -= sizeof(sts);
sts = buf[gotlen];
if (sts == STAT_RX_FRAME_CORRECT) {
debug("%s() got a frame, len=%d\n", __func__, gotlen);
return gotlen;
}
debug("RX: frame error (sts 0x%02X, %s %s %s %s %s)\n",
sts,
(sts & STAT_RX_LARGE_FRAME) ? "large" : "-",
(sts & STAT_RX_LENGTH_ERROR) ? "length" : "-",
(sts & STAT_RX_SHORT_FRAME) ? "short" : "-",
(sts & STAT_RX_CRC_ERROR) ? "crc" : "-",
(sts & STAT_RX_ALIGNMENT_ERROR) ? "align" : "-");
return -EIO;
}
#ifndef CONFIG_DM_ETH
/*
* mcs7830_init() - network interface's init callback
* @udev: network device to initialize
* @bd: board information
* Return: zero upon success, negative upon error
*
* after initial setup during probe() and get_info(), this init() callback
* ensures that the link is up and subsequent send() and recv() calls can
* exchange ethernet frames
*/
static int mcs7830_init(struct eth_device *eth, bd_t *bd)
{
struct ueth_data *dev = eth->priv;
return mcs7830_init_common(dev->pusb_dev);
}
/*
* mcs7830_send() - network interface's send callback
* @eth: network device to send the frame from
* @packet: ethernet frame content
* @length: ethernet frame length
* Return: zero upon success, negative upon error
*
* this routine send an ethernet frame out of the network interface
*/
static int mcs7830_send(struct eth_device *eth, void *packet, int length)
{
struct ueth_data *dev = eth->priv;
return mcs7830_send_common(dev, packet, length);
}
/*
* mcs7830_recv() - network interface's recv callback
* @eth: network device to receive frames from
* Return: zero upon success, negative upon error
*
* this routine checks for available ethernet frames that the network
* interface might have received, and notifies the network stack
*/
static int mcs7830_recv(struct eth_device *eth)
{
ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, MCS7830_RX_URB_SIZE);
struct ueth_data *ueth = eth->priv;
int len;
len = mcs7830_recv_common(ueth, buf);
if (len >= 0) {
net_process_received_packet(buf, len);
return 0;
}
return len;
}
/*
* mcs7830_halt() - network interface's halt callback
* @eth: network device to cease operation of
* Return: none
*
* this routine is supposed to undo the effect of previous initialization and
* ethernet frames exchange; in this implementation it's a NOP
*/
static void mcs7830_halt(struct eth_device *eth)
{
debug("%s()\n", __func__);
}
/*
* mcs7830_write_mac() - write an ethernet adapter's MAC address
* @eth: network device to write to
* Return: zero upon success, negative upon error
*
* this routine takes the MAC address from the ethernet interface's data
* structure, and writes it into the ethernet adapter such that subsequent
* exchange of ethernet frames uses this address
*/
static int mcs7830_write_mac(struct eth_device *eth)
{
struct ueth_data *ueth = eth->priv;
return mcs7830_write_mac_common(ueth->pusb_dev, eth->enetaddr);
}
/*
* mcs7830_iface_idx - index of detected network interfaces
*
* this counter keeps track of identified supported interfaces,
* to assign unique names as more interfaces are found
*/
static int mcs7830_iface_idx;
/*
* mcs7830_eth_before_probe() - network driver's before_probe callback
* Return: none
*
* this routine initializes driver's internal data in preparation of
* subsequent probe callbacks
*/
void mcs7830_eth_before_probe(void)
{
mcs7830_iface_idx = 0;
}
/*
* struct mcs7830_dongle - description of a supported Moschip ethernet dongle
* @vendor: 16bit USB vendor identification
* @product: 16bit USB product identification
*
* this structure describes a supported USB ethernet dongle by means of the
* vendor and product codes found during USB enumeration; no flags are held
* here since all supported dongles have identical behaviour, and required
* fixups get determined at runtime, such that no manual configuration is
* needed
*/
struct mcs7830_dongle {
uint16_t vendor;
uint16_t product;
};
/*
* mcs7830_dongles - the list of supported Moschip based USB ethernet dongles
*/
static const struct mcs7830_dongle mcs7830_dongles[] = {
{ 0x9710, 0x7832, }, /* Moschip 7832 */
{ 0x9710, 0x7830, }, /* Moschip 7830 */
{ 0x9710, 0x7730, }, /* Moschip 7730 */
{ 0x0df6, 0x0021, }, /* Sitecom LN 30 */
};
/*
* mcs7830_eth_probe() - network driver's probe callback
* @dev: detected USB device to check
* @ifnum: detected USB interface to check
* @ss: USB ethernet data structure to fill in upon match
* Return: #1 upon match, #0 upon mismatch or error
*
* this routine checks whether the found USB device is supported by
* this ethernet driver, and upon match fills in the USB ethernet
* data structure which later is passed to the get_info callback
*/
int mcs7830_eth_probe(struct usb_device *dev, unsigned int ifnum,
struct ueth_data *ss)
{
struct usb_interface *iface;
struct usb_interface_descriptor *iface_desc;
int i;
struct mcs7830_private *priv;
int ep_in_found, ep_out_found, ep_intr_found;
debug("%s()\n", __func__);
/* iterate the list of supported dongles */
iface = &dev->config.if_desc[ifnum];
iface_desc = &iface->desc;
for (i = 0; i < ARRAY_SIZE(mcs7830_dongles); i++) {
if (dev->descriptor.idVendor == mcs7830_dongles[i].vendor &&
dev->descriptor.idProduct == mcs7830_dongles[i].product)
break;
}
if (i == ARRAY_SIZE(mcs7830_dongles))
return 0;
debug("detected USB ethernet device: %04X:%04X\n",
dev->descriptor.idVendor, dev->descriptor.idProduct);
/* fill in driver private data */
priv = calloc(1, sizeof(*priv));
if (!priv)
return 0;
/* fill in the ueth_data structure, attach private data */
memset(ss, 0, sizeof(*ss));
ss->ifnum = ifnum;
ss->pusb_dev = dev;
ss->subclass = iface_desc->bInterfaceSubClass;
ss->protocol = iface_desc->bInterfaceProtocol;
ss->dev_priv = priv;
/*
* a minimum of three endpoints is expected: in (bulk),
* out (bulk), and interrupt; ignore all others
*/
ep_in_found = ep_out_found = ep_intr_found = 0;
for (i = 0; i < iface_desc->bNumEndpoints; i++) {
uint8_t eptype, epaddr;
bool is_input;
eptype = iface->ep_desc[i].bmAttributes;
eptype &= USB_ENDPOINT_XFERTYPE_MASK;
epaddr = iface->ep_desc[i].bEndpointAddress;
is_input = epaddr & USB_DIR_IN;
epaddr &= USB_ENDPOINT_NUMBER_MASK;
if (eptype == USB_ENDPOINT_XFER_BULK) {
if (is_input && !ep_in_found) {
ss->ep_in = epaddr;
ep_in_found++;
}
if (!is_input && !ep_out_found) {
ss->ep_out = epaddr;
ep_out_found++;
}
}
if (eptype == USB_ENDPOINT_XFER_INT) {
if (is_input && !ep_intr_found) {
ss->ep_int = epaddr;
ss->irqinterval = iface->ep_desc[i].bInterval;
ep_intr_found++;
}
}
}
debug("endpoints: in %d, out %d, intr %d\n",
ss->ep_in, ss->ep_out, ss->ep_int);
/* apply basic sanity checks */
if (usb_set_interface(dev, iface_desc->bInterfaceNumber, 0) ||
!ss->ep_in || !ss->ep_out || !ss->ep_int) {
debug("device probe incomplete\n");
return 0;
}
dev->privptr = ss;
return 1;
}
/*
* mcs7830_eth_get_info() - network driver's get_info callback
* @dev: detected USB device
* @ss: USB ethernet data structure filled in at probe()
* @eth: ethernet interface data structure to fill in
* Return: #1 upon success, #0 upon error
*
* this routine registers the mandatory init(), send(), recv(), and
* halt() callbacks with the ethernet interface, can register the
* optional write_hwaddr() callback with the ethernet interface,
* and initiates configuration of the interface such that subsequent
* calls to those callbacks results in network communication
*/
int mcs7830_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
struct eth_device *eth)
{
debug("%s()\n", __func__);
if (!eth) {
debug("%s: missing parameter.\n", __func__);
return 0;
}
snprintf(eth->name, sizeof(eth->name), "%s%d",
MCS7830_BASE_NAME, mcs7830_iface_idx++);
eth->init = mcs7830_init;
eth->send = mcs7830_send;
eth->recv = mcs7830_recv;
eth->halt = mcs7830_halt;
eth->write_hwaddr = mcs7830_write_mac;
eth->priv = ss;
if (mcs7830_basic_reset(ss->pusb_dev, ss->dev_priv))
return 0;
if (mcs7830_read_mac(ss->pusb_dev, eth->enetaddr))
return 0;
debug("MAC %pM\n", eth->enetaddr);
return 1;
}
#endif
#ifdef CONFIG_DM_ETH
static int mcs7830_eth_start(struct udevice *dev)
{
struct usb_device *udev = dev_get_parent_priv(dev);
return mcs7830_init_common(udev);
}
void mcs7830_eth_stop(struct udevice *dev)
{
debug("** %s()\n", __func__);
}
int mcs7830_eth_send(struct udevice *dev, void *packet, int length)
{
struct mcs7830_private *priv = dev_get_priv(dev);
struct ueth_data *ueth = &priv->ueth;
return mcs7830_send_common(ueth, packet, length);
}
int mcs7830_eth_recv(struct udevice *dev, int flags, uchar **packetp)
{
struct mcs7830_private *priv = dev_get_priv(dev);
struct ueth_data *ueth = &priv->ueth;
int len;
len = mcs7830_recv_common(ueth, priv->rx_buf);
*packetp = priv->rx_buf;
return len;
}
static int mcs7830_free_pkt(struct udevice *dev, uchar *packet, int packet_len)
{
struct mcs7830_private *priv = dev_get_priv(dev);
packet_len = ALIGN(packet_len, 4);
usb_ether_advance_rxbuf(&priv->ueth, sizeof(u32) + packet_len);
return 0;
}
int mcs7830_write_hwaddr(struct udevice *dev)
{
struct usb_device *udev = dev_get_parent_priv(dev);
struct eth_pdata *pdata = dev_get_platdata(dev);
return mcs7830_write_mac_common(udev, pdata->enetaddr);
}
static int mcs7830_eth_probe(struct udevice *dev)
{
struct usb_device *udev = dev_get_parent_priv(dev);
struct mcs7830_private *priv = dev_get_priv(dev);
struct eth_pdata *pdata = dev_get_platdata(dev);
struct ueth_data *ueth = &priv->ueth;
if (mcs7830_basic_reset(udev, priv))
return 0;
if (mcs7830_read_mac(udev, pdata->enetaddr))
return 0;
return usb_ether_register(dev, ueth, MCS7830_RX_URB_SIZE);
}
static const struct eth_ops mcs7830_eth_ops = {
.start = mcs7830_eth_start,
.send = mcs7830_eth_send,
.recv = mcs7830_eth_recv,
.free_pkt = mcs7830_free_pkt,
.stop = mcs7830_eth_stop,
.write_hwaddr = mcs7830_write_hwaddr,
};
U_BOOT_DRIVER(mcs7830_eth) = {
.name = "mcs7830_eth",
.id = UCLASS_ETH,
.probe = mcs7830_eth_probe,
.ops = &mcs7830_eth_ops,
.priv_auto_alloc_size = sizeof(struct mcs7830_private),
.platdata_auto_alloc_size = sizeof(struct eth_pdata),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
static const struct usb_device_id mcs7830_eth_id_table[] = {
{ USB_DEVICE(0x9710, 0x7832) }, /* Moschip 7832 */
{ USB_DEVICE(0x9710, 0x7830), }, /* Moschip 7830 */
{ USB_DEVICE(0x9710, 0x7730), }, /* Moschip 7730 */
{ USB_DEVICE(0x0df6, 0x0021), }, /* Sitecom LN 30 */
{ } /* Terminating entry */
};
U_BOOT_USB_DEVICE(mcs7830_eth, mcs7830_eth_id_table);
#endif