Move USB network drivers to drivers/net/usb.
It is preferable to group drivers by usage (net, scsi, ATA, ...) than by bus. When reviewing drivers, the [PCI|USB|PCMCIA|...] maintainer is probably less qualified on networking issues than a networking maintainer. Also, from a practical standpoint, chips often appear on multiple buses, which is why we do not put drivers into drivers/pci/net. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Jeff Garzik
534
drivers/net/usb/mcs7830.c
Normal file
534
drivers/net/usb/mcs7830.c
Normal file
@@ -0,0 +1,534 @@
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/*
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* MosChips MCS7830 based USB 2.0 Ethernet Devices
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*
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* based on usbnet.c, asix.c and the vendor provided mcs7830 driver
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*
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* Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>
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* Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
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* Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
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* Copyright (c) 2002-2003 TiVo Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/crc32.h>
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#include <linux/etherdevice.h>
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#include <linux/ethtool.h>
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#include <linux/init.h>
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#include <linux/mii.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/usb.h>
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#include "usbnet.h"
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/* requests */
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#define MCS7830_RD_BMREQ (USB_DIR_IN | USB_TYPE_VENDOR | \
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USB_RECIP_DEVICE)
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#define MCS7830_WR_BMREQ (USB_DIR_OUT | USB_TYPE_VENDOR | \
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USB_RECIP_DEVICE)
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#define MCS7830_RD_BREQ 0x0E
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#define MCS7830_WR_BREQ 0x0D
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#define MCS7830_CTRL_TIMEOUT 1000
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#define MCS7830_MAX_MCAST 64
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#define MCS7830_VENDOR_ID 0x9710
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#define MCS7830_PRODUCT_ID 0x7830
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#define MCS7830_MII_ADVERTISE (ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \
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ADVERTISE_100HALF | ADVERTISE_10FULL | \
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ADVERTISE_10HALF | ADVERTISE_CSMA)
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/* HIF_REG_XX coressponding index value */
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enum {
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HIF_REG_MULTICAST_HASH = 0x00,
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HIF_REG_PACKET_GAP1 = 0x08,
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HIF_REG_PACKET_GAP2 = 0x09,
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HIF_REG_PHY_DATA = 0x0a,
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HIF_REG_PHY_CMD1 = 0x0c,
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HIF_REG_PHY_CMD1_READ = 0x40,
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HIF_REG_PHY_CMD1_WRITE = 0x20,
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HIF_REG_PHY_CMD1_PHYADDR = 0x01,
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HIF_REG_PHY_CMD2 = 0x0d,
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HIF_REG_PHY_CMD2_PEND_FLAG_BIT = 0x80,
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HIF_REG_PHY_CMD2_READY_FLAG_BIT = 0x40,
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HIF_REG_CONFIG = 0x0e,
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HIF_REG_CONFIG_CFG = 0x80,
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HIF_REG_CONFIG_SPEED100 = 0x40,
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HIF_REG_CONFIG_FULLDUPLEX_ENABLE = 0x20,
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HIF_REG_CONFIG_RXENABLE = 0x10,
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HIF_REG_CONFIG_TXENABLE = 0x08,
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HIF_REG_CONFIG_SLEEPMODE = 0x04,
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HIF_REG_CONFIG_ALLMULTICAST = 0x02,
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HIF_REG_CONFIG_PROMISCIOUS = 0x01,
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HIF_REG_ETHERNET_ADDR = 0x0f,
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HIF_REG_22 = 0x15,
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HIF_REG_PAUSE_THRESHOLD = 0x16,
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HIF_REG_PAUSE_THRESHOLD_DEFAULT = 0,
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};
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struct mcs7830_data {
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u8 multi_filter[8];
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u8 config;
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};
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static const char driver_name[] = "MOSCHIP usb-ethernet driver";
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static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data)
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{
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struct usb_device *xdev = dev->udev;
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int ret;
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ret = usb_control_msg(xdev, usb_rcvctrlpipe(xdev, 0), MCS7830_RD_BREQ,
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MCS7830_RD_BMREQ, 0x0000, index, data,
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size, msecs_to_jiffies(MCS7830_CTRL_TIMEOUT));
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return ret;
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}
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static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, void *data)
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{
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struct usb_device *xdev = dev->udev;
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int ret;
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ret = usb_control_msg(xdev, usb_sndctrlpipe(xdev, 0), MCS7830_WR_BREQ,
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MCS7830_WR_BMREQ, 0x0000, index, data,
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size, msecs_to_jiffies(MCS7830_CTRL_TIMEOUT));
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return ret;
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}
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static void mcs7830_async_cmd_callback(struct urb *urb)
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{
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struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
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if (urb->status < 0)
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printk(KERN_DEBUG "mcs7830_async_cmd_callback() failed with %d",
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urb->status);
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kfree(req);
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usb_free_urb(urb);
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}
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static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data)
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{
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struct usb_ctrlrequest *req;
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int ret;
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struct urb *urb;
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urb = usb_alloc_urb(0, GFP_ATOMIC);
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if (!urb) {
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dev_dbg(&dev->udev->dev, "Error allocating URB "
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"in write_cmd_async!");
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return;
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}
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req = kmalloc(sizeof *req, GFP_ATOMIC);
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if (!req) {
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dev_err(&dev->udev->dev, "Failed to allocate memory for "
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"control request");
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goto out;
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}
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req->bRequestType = MCS7830_WR_BMREQ;
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req->bRequest = MCS7830_WR_BREQ;
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req->wValue = 0;
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req->wIndex = cpu_to_le16(index);
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req->wLength = cpu_to_le16(size);
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usb_fill_control_urb(urb, dev->udev,
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usb_sndctrlpipe(dev->udev, 0),
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(void *)req, data, size,
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mcs7830_async_cmd_callback, req);
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ret = usb_submit_urb(urb, GFP_ATOMIC);
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if (ret < 0) {
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dev_err(&dev->udev->dev, "Error submitting the control "
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"message: ret=%d", ret);
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goto out;
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}
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return;
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out:
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kfree(req);
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usb_free_urb(urb);
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}
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static int mcs7830_get_address(struct usbnet *dev)
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{
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int ret;
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ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN,
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dev->net->dev_addr);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int mcs7830_read_phy(struct usbnet *dev, u8 index)
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{
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int ret;
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int i;
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__le16 val;
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u8 cmd[2] = {
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HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR,
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HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index,
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};
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mutex_lock(&dev->phy_mutex);
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/* write the MII command */
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ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
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if (ret < 0)
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goto out;
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/* wait for the data to become valid, should be within < 1ms */
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for (i = 0; i < 10; i++) {
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ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
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if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
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break;
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ret = -EIO;
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msleep(1);
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}
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if (ret < 0)
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goto out;
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/* read actual register contents */
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ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val);
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if (ret < 0)
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goto out;
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ret = le16_to_cpu(val);
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dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n",
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index, val, i);
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out:
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mutex_unlock(&dev->phy_mutex);
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return ret;
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}
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static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val)
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{
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int ret;
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int i;
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__le16 le_val;
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u8 cmd[2] = {
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HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR,
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HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F),
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};
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mutex_lock(&dev->phy_mutex);
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/* write the new register contents */
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le_val = cpu_to_le16(val);
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ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val);
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if (ret < 0)
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goto out;
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/* write the MII command */
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ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
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if (ret < 0)
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goto out;
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/* wait for the command to be accepted by the PHY */
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for (i = 0; i < 10; i++) {
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ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
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if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
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break;
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ret = -EIO;
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msleep(1);
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}
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if (ret < 0)
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goto out;
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ret = 0;
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dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n",
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index, val, i);
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out:
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mutex_unlock(&dev->phy_mutex);
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return ret;
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}
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/*
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* This algorithm comes from the original mcs7830 version 1.4 driver,
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* not sure if it is needed.
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*/
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static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode)
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{
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int ret;
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/* Enable all media types */
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ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE);
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/* First reset BMCR */
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if (!ret)
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ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000);
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/* Enable Auto Neg */
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if (!ret)
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ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE);
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/* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */
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if (!ret)
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ret = mcs7830_write_phy(dev, MII_BMCR,
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BMCR_ANENABLE | BMCR_ANRESTART );
|
||||
return ret < 0 ? : 0;
|
||||
}
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||||
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||||
|
||||
/*
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||||
* if we can read register 22, the chip revision is C or higher
|
||||
*/
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||||
static int mcs7830_get_rev(struct usbnet *dev)
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{
|
||||
u8 dummy[2];
|
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int ret;
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ret = mcs7830_get_reg(dev, HIF_REG_22, 2, dummy);
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||||
if (ret > 0)
|
||||
return 2; /* Rev C or later */
|
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return 1; /* earlier revision */
|
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}
|
||||
|
||||
/*
|
||||
* On rev. C we need to set the pause threshold
|
||||
*/
|
||||
static void mcs7830_rev_C_fixup(struct usbnet *dev)
|
||||
{
|
||||
u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT;
|
||||
int retry;
|
||||
|
||||
for (retry = 0; retry < 2; retry++) {
|
||||
if (mcs7830_get_rev(dev) == 2) {
|
||||
dev_info(&dev->udev->dev, "applying rev.C fixup\n");
|
||||
mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD,
|
||||
1, &pause_threshold);
|
||||
}
|
||||
msleep(1);
|
||||
}
|
||||
}
|
||||
|
||||
static int mcs7830_init_dev(struct usbnet *dev)
|
||||
{
|
||||
int ret;
|
||||
int retry;
|
||||
|
||||
/* Read MAC address from EEPROM */
|
||||
ret = -EINVAL;
|
||||
for (retry = 0; retry < 5 && ret; retry++)
|
||||
ret = mcs7830_get_address(dev);
|
||||
if (ret) {
|
||||
dev_warn(&dev->udev->dev, "Cannot read MAC address\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* Set up PHY */
|
||||
ret = mcs7830_set_autoneg(dev, 0);
|
||||
if (ret) {
|
||||
dev_info(&dev->udev->dev, "Cannot set autoneg\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
mcs7830_rev_C_fixup(dev);
|
||||
ret = 0;
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int mcs7830_mdio_read(struct net_device *netdev, int phy_id,
|
||||
int location)
|
||||
{
|
||||
struct usbnet *dev = netdev->priv;
|
||||
return mcs7830_read_phy(dev, location);
|
||||
}
|
||||
|
||||
static void mcs7830_mdio_write(struct net_device *netdev, int phy_id,
|
||||
int location, int val)
|
||||
{
|
||||
struct usbnet *dev = netdev->priv;
|
||||
mcs7830_write_phy(dev, location, val);
|
||||
}
|
||||
|
||||
static int mcs7830_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
|
||||
{
|
||||
struct usbnet *dev = netdev_priv(net);
|
||||
return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
|
||||
}
|
||||
|
||||
/* credits go to asix_set_multicast */
|
||||
static void mcs7830_set_multicast(struct net_device *net)
|
||||
{
|
||||
struct usbnet *dev = netdev_priv(net);
|
||||
struct mcs7830_data *data = (struct mcs7830_data *)&dev->data;
|
||||
|
||||
data->config = HIF_REG_CONFIG_TXENABLE;
|
||||
|
||||
/* this should not be needed, but it doesn't work otherwise */
|
||||
data->config |= HIF_REG_CONFIG_ALLMULTICAST;
|
||||
|
||||
if (net->flags & IFF_PROMISC) {
|
||||
data->config |= HIF_REG_CONFIG_PROMISCIOUS;
|
||||
} else if (net->flags & IFF_ALLMULTI
|
||||
|| net->mc_count > MCS7830_MAX_MCAST) {
|
||||
data->config |= HIF_REG_CONFIG_ALLMULTICAST;
|
||||
} else if (net->mc_count == 0) {
|
||||
/* just broadcast and directed */
|
||||
} else {
|
||||
/* We use the 20 byte dev->data
|
||||
* for our 8 byte filter buffer
|
||||
* to avoid allocating memory that
|
||||
* is tricky to free later */
|
||||
struct dev_mc_list *mc_list = net->mc_list;
|
||||
u32 crc_bits;
|
||||
int i;
|
||||
|
||||
memset(data->multi_filter, 0, sizeof data->multi_filter);
|
||||
|
||||
/* Build the multicast hash filter. */
|
||||
for (i = 0; i < net->mc_count; i++) {
|
||||
crc_bits = ether_crc(ETH_ALEN, mc_list->dmi_addr) >> 26;
|
||||
data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7);
|
||||
mc_list = mc_list->next;
|
||||
}
|
||||
|
||||
mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH,
|
||||
sizeof data->multi_filter,
|
||||
data->multi_filter);
|
||||
}
|
||||
|
||||
mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config);
|
||||
}
|
||||
|
||||
static int mcs7830_get_regs_len(struct net_device *net)
|
||||
{
|
||||
struct usbnet *dev = netdev_priv(net);
|
||||
|
||||
switch (mcs7830_get_rev(dev)) {
|
||||
case 1:
|
||||
return 21;
|
||||
case 2:
|
||||
return 32;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo)
|
||||
{
|
||||
usbnet_get_drvinfo(net, drvinfo);
|
||||
drvinfo->regdump_len = mcs7830_get_regs_len(net);
|
||||
}
|
||||
|
||||
static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data)
|
||||
{
|
||||
struct usbnet *dev = netdev_priv(net);
|
||||
|
||||
regs->version = mcs7830_get_rev(dev);
|
||||
mcs7830_get_reg(dev, 0, regs->len, data);
|
||||
}
|
||||
|
||||
static struct ethtool_ops mcs7830_ethtool_ops = {
|
||||
.get_drvinfo = mcs7830_get_drvinfo,
|
||||
.get_regs_len = mcs7830_get_regs_len,
|
||||
.get_regs = mcs7830_get_regs,
|
||||
|
||||
/* common usbnet calls */
|
||||
.get_link = usbnet_get_link,
|
||||
.get_msglevel = usbnet_get_msglevel,
|
||||
.set_msglevel = usbnet_set_msglevel,
|
||||
.get_settings = usbnet_get_settings,
|
||||
.set_settings = usbnet_set_settings,
|
||||
.nway_reset = usbnet_nway_reset,
|
||||
};
|
||||
|
||||
static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev)
|
||||
{
|
||||
struct net_device *net = dev->net;
|
||||
int ret;
|
||||
|
||||
ret = mcs7830_init_dev(dev);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
net->do_ioctl = mcs7830_ioctl;
|
||||
net->ethtool_ops = &mcs7830_ethtool_ops;
|
||||
net->set_multicast_list = mcs7830_set_multicast;
|
||||
mcs7830_set_multicast(net);
|
||||
|
||||
/* reserve space for the status byte on rx */
|
||||
dev->rx_urb_size = ETH_FRAME_LEN + 1;
|
||||
|
||||
dev->mii.mdio_read = mcs7830_mdio_read;
|
||||
dev->mii.mdio_write = mcs7830_mdio_write;
|
||||
dev->mii.dev = net;
|
||||
dev->mii.phy_id_mask = 0x3f;
|
||||
dev->mii.reg_num_mask = 0x1f;
|
||||
dev->mii.phy_id = *((u8 *) net->dev_addr + 1);
|
||||
|
||||
ret = usbnet_get_endpoints(dev, udev);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* The chip always appends a status bytes that we need to strip */
|
||||
static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
|
||||
{
|
||||
u8 status;
|
||||
|
||||
if (skb->len == 0) {
|
||||
dev_err(&dev->udev->dev, "unexpected empty rx frame\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
skb_trim(skb, skb->len - 1);
|
||||
status = skb->data[skb->len];
|
||||
|
||||
if (status != 0x20)
|
||||
dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status);
|
||||
|
||||
return skb->len > 0;
|
||||
}
|
||||
|
||||
static const struct driver_info moschip_info = {
|
||||
.description = "MOSCHIP 7830 usb-NET adapter",
|
||||
.bind = mcs7830_bind,
|
||||
.rx_fixup = mcs7830_rx_fixup,
|
||||
.flags = FLAG_ETHER,
|
||||
.in = 1,
|
||||
.out = 2,
|
||||
};
|
||||
|
||||
static const struct usb_device_id products[] = {
|
||||
{
|
||||
USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID),
|
||||
.driver_info = (unsigned long) &moschip_info,
|
||||
},
|
||||
{},
|
||||
};
|
||||
MODULE_DEVICE_TABLE(usb, products);
|
||||
|
||||
static struct usb_driver mcs7830_driver = {
|
||||
.name = driver_name,
|
||||
.id_table = products,
|
||||
.probe = usbnet_probe,
|
||||
.disconnect = usbnet_disconnect,
|
||||
.suspend = usbnet_suspend,
|
||||
.resume = usbnet_resume,
|
||||
};
|
||||
|
||||
static int __init mcs7830_init(void)
|
||||
{
|
||||
return usb_register(&mcs7830_driver);
|
||||
}
|
||||
module_init(mcs7830_init);
|
||||
|
||||
static void __exit mcs7830_exit(void)
|
||||
{
|
||||
usb_deregister(&mcs7830_driver);
|
||||
}
|
||||
module_exit(mcs7830_exit);
|
||||
|
||||
MODULE_DESCRIPTION("USB to network adapter MCS7830)");
|
||||
MODULE_LICENSE("GPL");
|
||||
Reference in New Issue
Block a user