--- /dev/null
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <usb.h>
+
+#include "usb_ether.h"
+
+typedef void (*usb_eth_before_probe)(void);
+typedef int (*usb_eth_probe)(struct usb_device *dev, unsigned int ifnum,
+ struct ueth_data *ss);
+typedef int (*usb_eth_get_info)(struct usb_device *dev, struct ueth_data *ss,
+ struct eth_device *dev_desc);
+
+struct usb_eth_prob_dev {
+ usb_eth_before_probe before_probe; /* optional */
+ usb_eth_probe probe;
+ usb_eth_get_info get_info;
+};
+
+/* driver functions go here, each bracketed by #ifdef CONFIG_USB_ETHER_xxx */
+static const struct usb_eth_prob_dev prob_dev[] = {
+#ifdef CONFIG_USB_ETHER_ASIX
+ {
+ .before_probe = asix_eth_before_probe,
+ .probe = asix_eth_probe,
+ .get_info = asix_eth_get_info,
+ },
+#endif
+#ifdef CONFIG_USB_ETHER_MCS7830
+ {
+ .before_probe = mcs7830_eth_before_probe,
+ .probe = mcs7830_eth_probe,
+ .get_info = mcs7830_eth_get_info,
+ },
+#endif
+#ifdef CONFIG_USB_ETHER_SMSC95XX
+ {
+ .before_probe = smsc95xx_eth_before_probe,
+ .probe = smsc95xx_eth_probe,
+ .get_info = smsc95xx_eth_get_info,
+ },
+#endif
+ { }, /* END */
+};
+
+static int usb_max_eth_dev; /* number of highest available usb eth device */
+static struct ueth_data usb_eth[USB_MAX_ETH_DEV];
+
+/*******************************************************************************
+ * tell if current ethernet device is a usb dongle
+ */
+int is_eth_dev_on_usb_host(void)
+{
+ int i;
+ struct eth_device *dev = eth_get_dev();
+
+ if (dev) {
+ for (i = 0; i < usb_max_eth_dev; i++)
+ if (&usb_eth[i].eth_dev == dev)
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ * Given a USB device, ask each driver if it can support it, and attach it
+ * to the first driver that says 'yes'
+ */
+static void probe_valid_drivers(struct usb_device *dev)
+{
+ struct eth_device *eth;
+ int j;
+
+ for (j = 0; prob_dev[j].probe && prob_dev[j].get_info; j++) {
+ if (!prob_dev[j].probe(dev, 0, &usb_eth[usb_max_eth_dev]))
+ continue;
+ /*
+ * ok, it is a supported eth device. Get info and fill it in
+ */
+ eth = &usb_eth[usb_max_eth_dev].eth_dev;
+ if (prob_dev[j].get_info(dev,
+ &usb_eth[usb_max_eth_dev],
+ eth)) {
+ /* found proper driver */
+ /* register with networking stack */
+ usb_max_eth_dev++;
+
+ /*
+ * usb_max_eth_dev must be incremented prior to this
+ * call since eth_current_changed (internally called)
+ * relies on it
+ */
+ eth_register(eth);
+ if (eth_write_hwaddr(eth, "usbeth",
+ usb_max_eth_dev - 1))
+ puts("Warning: failed to set MAC address\n");
+ break;
+ }
+ }
+ }
+
+/*******************************************************************************
+ * scan the usb and reports device info
+ * to the user if mode = 1
+ * returns current device or -1 if no
+ */
+int usb_host_eth_scan(int mode)
+{
+ int i, old_async;
+ struct usb_device *dev;
+
+
+ if (mode == 1)
+ printf(" scanning usb for ethernet devices... ");
+
+ old_async = usb_disable_asynch(1); /* asynch transfer not allowed */
+
+ /* unregister a previously detected device */
+ for (i = 0; i < usb_max_eth_dev; i++)
+ eth_unregister(&usb_eth[i].eth_dev);
+
+ memset(usb_eth, 0, sizeof(usb_eth));
+
+ for (i = 0; prob_dev[i].probe; i++) {
+ if (prob_dev[i].before_probe)
+ prob_dev[i].before_probe();
+ }
+
+ usb_max_eth_dev = 0;
+ for (i = 0; i < USB_MAX_DEVICE; i++) {
+ dev = usb_get_dev_index(i); /* get device */
+ debug("i=%d\n", i);
+ if (dev == NULL)
+ break; /* no more devices available */
+
+ /* find valid usb_ether driver for this device, if any */
+ probe_valid_drivers(dev);
+
+ /* check limit */
+ if (usb_max_eth_dev == USB_MAX_ETH_DEV) {
+ printf("max USB Ethernet Device reached: %d stopping\n",
+ usb_max_eth_dev);
+ break;
+ }
+ } /* for */
+
+ usb_disable_asynch(old_async); /* restore asynch value */
+ printf("%d Ethernet Device(s) found\n", usb_max_eth_dev);
+ if (usb_max_eth_dev > 0)
+ return 0;
+ return -1;
+}
Code Review / kvmfornfv.git / blobdiff