1 files changed, 336 insertions, 0 deletions

diff --git a/roms/u-boot/drivers/usb/eth/usb_ether.c b/roms/u-boot/drivers/usb/eth/usb_ether.c
new file mode 100644
index 000000000..e368ecda0
--- /dev/null
+++ b/roms/u-boot/drivers/usb/eth/usb_ether.c
@@ -0,0 +1,336 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <log.h>
+#include <malloc.h>
+#include <net.h>
+#include <usb.h>
+#include <asm/cache.h>
+#include <dm/device-internal.h>
+
+#include "usb_ether.h"
+
+#ifdef CONFIG_DM_ETH
+
+#define USB_BULK_RECV_TIMEOUT 500
+
+int usb_ether_register(struct udevice *dev, struct ueth_data *ueth, int rxsize)
+{
+	struct usb_device *udev = dev_get_parent_priv(dev);
+	struct usb_interface_descriptor *iface_desc;
+	bool ep_in_found = false, ep_out_found = false;
+	struct usb_interface *iface;
+	const int ifnum = 0; /* Always use interface 0 */
+	int ret, i;
+
+	iface = &udev->config.if_desc[ifnum];
+	iface_desc = &udev->config.if_desc[ifnum].desc;
+
+	/* Initialize the ueth_data structure with some useful info */
+	ueth->ifnum = ifnum;
+	ueth->subclass = iface_desc->bInterfaceSubClass;
+	ueth->protocol = iface_desc->bInterfaceProtocol;
+
+	/*
+	 * We are expecting a minimum of 3 endpoints - in, out (bulk), and int.
+	 * We will ignore any others.
+	 */
+	for (i = 0; i < iface_desc->bNumEndpoints; i++) {
+		int ep_addr = iface->ep_desc[i].bEndpointAddress;
+
+		/* is it an BULK endpoint? */
+		if ((iface->ep_desc[i].bmAttributes &
+		     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
+			if (ep_addr & USB_DIR_IN && !ep_in_found) {
+				ueth->ep_in = ep_addr &
+					USB_ENDPOINT_NUMBER_MASK;
+				ep_in_found = true;
+			} else if (!(ep_addr & USB_DIR_IN) && !ep_out_found) {
+				ueth->ep_out = ep_addr &
+					USB_ENDPOINT_NUMBER_MASK;
+				ep_out_found = true;
+			}
+		}
+
+		/* is it an interrupt endpoint? */
+		if ((iface->ep_desc[i].bmAttributes &
+		    USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
+			ueth->ep_int = iface->ep_desc[i].bEndpointAddress &
+				USB_ENDPOINT_NUMBER_MASK;
+			ueth->irqinterval = iface->ep_desc[i].bInterval;
+		}
+	}
+	debug("Endpoints In %d Out %d Int %d\n", ueth->ep_in, ueth->ep_out,
+	      ueth->ep_int);
+
+	/* Do some basic sanity checks, and bail if we find a problem */
+	if (!ueth->ep_in || !ueth->ep_out || !ueth->ep_int) {
+		debug("%s: %s: Cannot find endpoints\n", __func__, dev->name);
+		return -ENXIO;
+	}
+
+	ueth->rxsize = rxsize;
+	ueth->rxbuf = memalign(ARCH_DMA_MINALIGN, rxsize);
+	if (!ueth->rxbuf)
+		return -ENOMEM;
+
+	ret = usb_set_interface(udev, iface_desc->bInterfaceNumber, ifnum);
+	if (ret) {
+		debug("%s: %s: Cannot set interface: %d\n", __func__, dev->name,
+		      ret);
+		return ret;
+	}
+	ueth->pusb_dev = udev;
+
+	return 0;
+}
+
+int usb_ether_deregister(struct ueth_data *ueth)
+{
+	return 0;
+}
+
+int usb_ether_receive(struct ueth_data *ueth, int rxsize)
+{
+	int actual_len;
+	int ret;
+
+	if (rxsize > ueth->rxsize)
+		return -EINVAL;
+	ret = usb_bulk_msg(ueth->pusb_dev,
+			   usb_rcvbulkpipe(ueth->pusb_dev, ueth->ep_in),
+			   ueth->rxbuf, rxsize, &actual_len,
+			   USB_BULK_RECV_TIMEOUT);
+	debug("Rx: len = %u, actual = %u, err = %d\n", rxsize, actual_len, ret);
+	if (ret) {
+		printf("Rx: failed to receive: %d\n", ret);
+		return ret;
+	}
+	if (actual_len > rxsize) {
+		debug("Rx: received too many bytes %d\n", actual_len);
+		return -ENOSPC;
+	}
+	ueth->rxlen = actual_len;
+	ueth->rxptr = 0;
+
+	return actual_len ? 0 : -EAGAIN;
+}
+
+void usb_ether_advance_rxbuf(struct ueth_data *ueth, int num_bytes)
+{
+	ueth->rxptr += num_bytes;
+	if (num_bytes < 0 || ueth->rxptr >= ueth->rxlen)
+		ueth->rxlen = 0;
+}
+
+int usb_ether_get_rx_bytes(struct ueth_data *ueth, uint8_t **ptrp)
+{
+	if (!ueth->rxlen)
+		return 0;
+
+	*ptrp = &ueth->rxbuf[ueth->rxptr];
+
+	return ueth->rxlen - ueth->rxptr;
+}
+
+#else
+
+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_ASIX88179
+	{
+		.before_probe = ax88179_eth_before_probe,
+		.probe = ax88179_eth_probe,
+		.get_info = ax88179_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
+#ifdef CONFIG_USB_ETHER_RTL8152
+	{
+		.before_probe = r8152_eth_before_probe,
+		.probe = r8152_eth_probe,
+		.get_info = r8152_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;
+
+	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;
+#if CONFIG_IS_ENABLED(DM_USB)
+	/*
+	 * TODO: We should add U_BOOT_USB_DEVICE() declarations to each USB
+	 * Ethernet driver and then most of this file can be removed.
+	 */
+	struct udevice *bus;
+	struct uclass *uc;
+	int ret;
+
+	ret = uclass_get(UCLASS_USB, &uc);
+	if (ret)
+		return ret;
+	uclass_foreach_dev(bus, uc) {
+		for (i = 0; i < USB_MAX_DEVICE; i++) {
+			struct usb_device *dev;
+
+			dev = usb_get_dev_index(bus, i); /* get device */
+			debug("i=%d, %s\n", i, dev ? dev->dev->name : "(done)");
+			if (!dev)
+				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)
+				break;
+		} /* for */
+	}
+#else
+	for (i = 0; i < USB_MAX_DEVICE; i++) {
+		struct usb_device *dev;
+
+		dev = usb_get_dev_index(i); /* get device */
+		debug("i=%d\n", i);
+		if (!dev)
+			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)
+			break;
+	} /* for */
+#endif
+	if (usb_max_eth_dev == USB_MAX_ETH_DEV) {
+		printf("max USB Ethernet Device reached: %d stopping\n",
+		       usb_max_eth_dev);
+	}
+	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;
+}
+#endif