diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/net/usb/cx82310_eth.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/net/usb/cx82310_eth.c | 336 |
1 files changed, 0 insertions, 336 deletions
diff --git a/ANDROID_3.4.5/drivers/net/usb/cx82310_eth.c b/ANDROID_3.4.5/drivers/net/usb/cx82310_eth.c deleted file mode 100644 index 0e053135..00000000 --- a/ANDROID_3.4.5/drivers/net/usb/cx82310_eth.c +++ /dev/null @@ -1,336 +0,0 @@ -/* - * Driver for USB ethernet port of Conexant CX82310-based ADSL routers - * Copyright (C) 2010 by Ondrej Zary - * some parts inspired by the cxacru driver - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/workqueue.h> -#include <linux/mii.h> -#include <linux/usb.h> -#include <linux/usb/usbnet.h> - -enum cx82310_cmd { - CMD_START = 0x84, /* no effect? */ - CMD_STOP = 0x85, /* no effect? */ - CMD_GET_STATUS = 0x90, /* returns nothing? */ - CMD_GET_MAC_ADDR = 0x91, /* read MAC address */ - CMD_GET_LINK_STATUS = 0x92, /* not useful, link is always up */ - CMD_ETHERNET_MODE = 0x99, /* unknown, needed during init */ -}; - -enum cx82310_status { - STATUS_UNDEFINED, - STATUS_SUCCESS, - STATUS_ERROR, - STATUS_UNSUPPORTED, - STATUS_UNIMPLEMENTED, - STATUS_PARAMETER_ERROR, - STATUS_DBG_LOOPBACK, -}; - -#define CMD_PACKET_SIZE 64 -/* first command after power on can take around 8 seconds */ -#define CMD_TIMEOUT 15000 -#define CMD_REPLY_RETRY 5 - -#define CX82310_MTU 1514 -#define CMD_EP 0x01 - -/* - * execute control command - * - optionally send some data (command parameters) - * - optionally wait for the reply - * - optionally read some data from the reply - */ -static int cx82310_cmd(struct usbnet *dev, enum cx82310_cmd cmd, bool reply, - u8 *wdata, int wlen, u8 *rdata, int rlen) -{ - int actual_len, retries, ret; - struct usb_device *udev = dev->udev; - u8 *buf = kzalloc(CMD_PACKET_SIZE, GFP_KERNEL); - - if (!buf) - return -ENOMEM; - - /* create command packet */ - buf[0] = cmd; - if (wdata) - memcpy(buf + 4, wdata, min_t(int, wlen, CMD_PACKET_SIZE - 4)); - - /* send command packet */ - ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, CMD_EP), buf, - CMD_PACKET_SIZE, &actual_len, CMD_TIMEOUT); - if (ret < 0) { - dev_err(&dev->udev->dev, "send command %#x: error %d\n", - cmd, ret); - goto end; - } - - if (reply) { - /* wait for reply, retry if it's empty */ - for (retries = 0; retries < CMD_REPLY_RETRY; retries++) { - ret = usb_bulk_msg(udev, usb_rcvbulkpipe(udev, CMD_EP), - buf, CMD_PACKET_SIZE, &actual_len, - CMD_TIMEOUT); - if (ret < 0) { - dev_err(&dev->udev->dev, - "reply receive error %d\n", ret); - goto end; - } - if (actual_len > 0) - break; - } - if (actual_len == 0) { - dev_err(&dev->udev->dev, "no reply to command %#x\n", - cmd); - ret = -EIO; - goto end; - } - if (buf[0] != cmd) { - dev_err(&dev->udev->dev, - "got reply to command %#x, expected: %#x\n", - buf[0], cmd); - ret = -EIO; - goto end; - } - if (buf[1] != STATUS_SUCCESS) { - dev_err(&dev->udev->dev, "command %#x failed: %#x\n", - cmd, buf[1]); - ret = -EIO; - goto end; - } - if (rdata) - memcpy(rdata, buf + 4, - min_t(int, rlen, CMD_PACKET_SIZE - 4)); - } -end: - kfree(buf); - return ret; -} - -#define partial_len data[0] /* length of partial packet data */ -#define partial_rem data[1] /* remaining (missing) data length */ -#define partial_data data[2] /* partial packet data */ - -static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf) -{ - int ret; - char buf[15]; - struct usb_device *udev = dev->udev; - - /* avoid ADSL modems - continue only if iProduct is "USB NET CARD" */ - if (usb_string(udev, udev->descriptor.iProduct, buf, sizeof(buf)) > 0 - && strcmp(buf, "USB NET CARD")) { - dev_info(&udev->dev, "ignoring: probably an ADSL modem\n"); - return -ENODEV; - } - - ret = usbnet_get_endpoints(dev, intf); - if (ret) - return ret; - - /* - * this must not include ethernet header as the device can send partial - * packets with no header (and sometimes even empty URBs) - */ - dev->net->hard_header_len = 0; - /* we can send at most 1514 bytes of data (+ 2-byte header) per URB */ - dev->hard_mtu = CX82310_MTU + 2; - /* we can receive URBs up to 4KB from the device */ - dev->rx_urb_size = 4096; - - dev->partial_data = (unsigned long) kmalloc(dev->hard_mtu, GFP_KERNEL); - if (!dev->partial_data) - return -ENOMEM; - - /* enable ethernet mode (?) */ - ret = cx82310_cmd(dev, CMD_ETHERNET_MODE, true, "\x01", 1, NULL, 0); - if (ret) { - dev_err(&udev->dev, "unable to enable ethernet mode: %d\n", - ret); - goto err; - } - - /* get the MAC address */ - ret = cx82310_cmd(dev, CMD_GET_MAC_ADDR, true, NULL, 0, - dev->net->dev_addr, ETH_ALEN); - if (ret) { - dev_err(&udev->dev, "unable to read MAC address: %d\n", ret); - goto err; - } - - /* start (does not seem to have any effect?) */ - ret = cx82310_cmd(dev, CMD_START, false, NULL, 0, NULL, 0); - if (ret) - goto err; - - return 0; -err: - kfree((void *)dev->partial_data); - return ret; -} - -static void cx82310_unbind(struct usbnet *dev, struct usb_interface *intf) -{ - kfree((void *)dev->partial_data); -} - -/* - * RX is NOT easy - we can receive multiple packets per skb, each having 2-byte - * packet length at the beginning. - * The last packet might be incomplete (when it crosses the 4KB URB size), - * continuing in the next skb (without any headers). - * If a packet has odd length, there is one extra byte at the end (before next - * packet or at the end of the URB). - */ -static int cx82310_rx_fixup(struct usbnet *dev, struct sk_buff *skb) -{ - int len; - struct sk_buff *skb2; - - /* - * If the last skb ended with an incomplete packet, this skb contains - * end of that packet at the beginning. - */ - if (dev->partial_rem) { - len = dev->partial_len + dev->partial_rem; - skb2 = alloc_skb(len, GFP_ATOMIC); - if (!skb2) - return 0; - skb_put(skb2, len); - memcpy(skb2->data, (void *)dev->partial_data, - dev->partial_len); - memcpy(skb2->data + dev->partial_len, skb->data, - dev->partial_rem); - usbnet_skb_return(dev, skb2); - skb_pull(skb, (dev->partial_rem + 1) & ~1); - dev->partial_rem = 0; - if (skb->len < 2) - return 1; - } - - /* a skb can contain multiple packets */ - while (skb->len > 1) { - /* first two bytes are packet length */ - len = skb->data[0] | (skb->data[1] << 8); - skb_pull(skb, 2); - - /* if last packet in the skb, let usbnet to process it */ - if (len == skb->len || len + 1 == skb->len) { - skb_trim(skb, len); - break; - } - - if (len > CX82310_MTU) { - dev_err(&dev->udev->dev, "RX packet too long: %d B\n", - len); - return 0; - } - - /* incomplete packet, save it for the next skb */ - if (len > skb->len) { - dev->partial_len = skb->len; - dev->partial_rem = len - skb->len; - memcpy((void *)dev->partial_data, skb->data, - dev->partial_len); - skb_pull(skb, skb->len); - break; - } - - skb2 = alloc_skb(len, GFP_ATOMIC); - if (!skb2) - return 0; - skb_put(skb2, len); - memcpy(skb2->data, skb->data, len); - /* process the packet */ - usbnet_skb_return(dev, skb2); - - skb_pull(skb, (len + 1) & ~1); - } - - /* let usbnet process the last packet */ - return 1; -} - -/* TX is easy, just add 2 bytes of length at the beginning */ -static struct sk_buff *cx82310_tx_fixup(struct usbnet *dev, struct sk_buff *skb, - gfp_t flags) -{ - int len = skb->len; - - if (skb_headroom(skb) < 2) { - struct sk_buff *skb2 = skb_copy_expand(skb, 2, 0, flags); - dev_kfree_skb_any(skb); - skb = skb2; - if (!skb) - return NULL; - } - skb_push(skb, 2); - - skb->data[0] = len; - skb->data[1] = len >> 8; - - return skb; -} - - -static const struct driver_info cx82310_info = { - .description = "Conexant CX82310 USB ethernet", - .flags = FLAG_ETHER, - .bind = cx82310_bind, - .unbind = cx82310_unbind, - .rx_fixup = cx82310_rx_fixup, - .tx_fixup = cx82310_tx_fixup, -}; - -#define USB_DEVICE_CLASS(vend, prod, cl, sc, pr) \ - .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \ - USB_DEVICE_ID_MATCH_DEV_INFO, \ - .idVendor = (vend), \ - .idProduct = (prod), \ - .bDeviceClass = (cl), \ - .bDeviceSubClass = (sc), \ - .bDeviceProtocol = (pr) - -static const struct usb_device_id products[] = { - { - USB_DEVICE_CLASS(0x0572, 0xcb01, 0xff, 0, 0), - .driver_info = (unsigned long) &cx82310_info - }, - { }, -}; -MODULE_DEVICE_TABLE(usb, products); - -static struct usb_driver cx82310_driver = { - .name = "cx82310_eth", - .id_table = products, - .probe = usbnet_probe, - .disconnect = usbnet_disconnect, - .suspend = usbnet_suspend, - .resume = usbnet_resume, -}; - -module_usb_driver(cx82310_driver); - -MODULE_AUTHOR("Ondrej Zary"); -MODULE_DESCRIPTION("Conexant CX82310-based ADSL router USB ethernet driver"); -MODULE_LICENSE("GPL"); |