diff options
Diffstat (limited to 'drivers/usb/net/mcs7830.c')
| -rw-r--r-- | drivers/usb/net/mcs7830.c | 534 |
1 files changed, 0 insertions, 534 deletions
diff --git a/drivers/usb/net/mcs7830.c b/drivers/usb/net/mcs7830.c deleted file mode 100644 index 6240b978fe3d..000000000000 --- a/drivers/usb/net/mcs7830.c +++ /dev/null @@ -1,534 +0,0 @@ -/* - * MosChips MCS7830 based USB 2.0 Ethernet Devices - * - * based on usbnet.c, asix.c and the vendor provided mcs7830 driver - * - * Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de> - * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com> - * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net> - * Copyright (c) 2002-2003 TiVo Inc. - * - * 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/crc32.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/init.h> -#include <linux/mii.h> -#include <linux/module.h> -#include <linux/netdevice.h> -#include <linux/usb.h> - -#include "usbnet.h" - -/* requests */ -#define MCS7830_RD_BMREQ (USB_DIR_IN | USB_TYPE_VENDOR | \ - USB_RECIP_DEVICE) -#define MCS7830_WR_BMREQ (USB_DIR_OUT | USB_TYPE_VENDOR | \ - USB_RECIP_DEVICE) -#define MCS7830_RD_BREQ 0x0E -#define MCS7830_WR_BREQ 0x0D - -#define MCS7830_CTRL_TIMEOUT 1000 -#define MCS7830_MAX_MCAST 64 - -#define MCS7830_VENDOR_ID 0x9710 -#define MCS7830_PRODUCT_ID 0x7830 - -#define MCS7830_MII_ADVERTISE (ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \ - ADVERTISE_100HALF | ADVERTISE_10FULL | \ - ADVERTISE_10HALF | ADVERTISE_CSMA) - -/* HIF_REG_XX coressponding index value */ -enum { - HIF_REG_MULTICAST_HASH = 0x00, - HIF_REG_PACKET_GAP1 = 0x08, - HIF_REG_PACKET_GAP2 = 0x09, - HIF_REG_PHY_DATA = 0x0a, - HIF_REG_PHY_CMD1 = 0x0c, - HIF_REG_PHY_CMD1_READ = 0x40, - HIF_REG_PHY_CMD1_WRITE = 0x20, - HIF_REG_PHY_CMD1_PHYADDR = 0x01, - HIF_REG_PHY_CMD2 = 0x0d, - HIF_REG_PHY_CMD2_PEND_FLAG_BIT = 0x80, - HIF_REG_PHY_CMD2_READY_FLAG_BIT = 0x40, - HIF_REG_CONFIG = 0x0e, - HIF_REG_CONFIG_CFG = 0x80, - HIF_REG_CONFIG_SPEED100 = 0x40, - HIF_REG_CONFIG_FULLDUPLEX_ENABLE = 0x20, - HIF_REG_CONFIG_RXENABLE = 0x10, - HIF_REG_CONFIG_TXENABLE = 0x08, - HIF_REG_CONFIG_SLEEPMODE = 0x04, - HIF_REG_CONFIG_ALLMULTICAST = 0x02, - HIF_REG_CONFIG_PROMISCIOUS = 0x01, - HIF_REG_ETHERNET_ADDR = 0x0f, - HIF_REG_22 = 0x15, - HIF_REG_PAUSE_THRESHOLD = 0x16, - HIF_REG_PAUSE_THRESHOLD_DEFAULT = 0, -}; - -struct mcs7830_data { - u8 multi_filter[8]; - u8 config; -}; - -static const char driver_name[] = "MOSCHIP usb-ethernet driver"; - -static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data) -{ - struct usb_device *xdev = dev->udev; - int ret; - - ret = usb_control_msg(xdev, usb_rcvctrlpipe(xdev, 0), MCS7830_RD_BREQ, - MCS7830_RD_BMREQ, 0x0000, index, data, - size, msecs_to_jiffies(MCS7830_CTRL_TIMEOUT)); - return ret; -} - -static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, void *data) -{ - struct usb_device *xdev = dev->udev; - int ret; - - ret = usb_control_msg(xdev, usb_sndctrlpipe(xdev, 0), MCS7830_WR_BREQ, - MCS7830_WR_BMREQ, 0x0000, index, data, - size, msecs_to_jiffies(MCS7830_CTRL_TIMEOUT)); - return ret; -} - -static void mcs7830_async_cmd_callback(struct urb *urb) -{ - struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; - - if (urb->status < 0) - printk(KERN_DEBUG "mcs7830_async_cmd_callback() failed with %d", - urb->status); - - kfree(req); - usb_free_urb(urb); -} - -static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data) -{ - struct usb_ctrlrequest *req; - int ret; - struct urb *urb; - - urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!urb) { - dev_dbg(&dev->udev->dev, "Error allocating URB " - "in write_cmd_async!"); - return; - } - - req = kmalloc(sizeof *req, GFP_ATOMIC); - if (!req) { - dev_err(&dev->udev->dev, "Failed to allocate memory for " - "control request"); - goto out; - } - req->bRequestType = MCS7830_WR_BMREQ; - req->bRequest = MCS7830_WR_BREQ; - req->wValue = 0; - req->wIndex = cpu_to_le16(index); - req->wLength = cpu_to_le16(size); - - usb_fill_control_urb(urb, dev->udev, - usb_sndctrlpipe(dev->udev, 0), - (void *)req, data, size, - mcs7830_async_cmd_callback, req); - - ret = usb_submit_urb(urb, GFP_ATOMIC); - if (ret < 0) { - dev_err(&dev->udev->dev, "Error submitting the control " - "message: ret=%d", ret); - goto out; - } - return; -out: - kfree(req); - usb_free_urb(urb); -} - -static int mcs7830_get_address(struct usbnet *dev) -{ - int ret; - ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, - dev->net->dev_addr); - if (ret < 0) - return ret; - return 0; -} - -static int mcs7830_read_phy(struct usbnet *dev, u8 index) -{ - int ret; - int i; - __le16 val; - - u8 cmd[2] = { - HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR, - HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index, - }; - - mutex_lock(&dev->phy_mutex); - /* write the MII command */ - ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); - if (ret < 0) - goto out; - - /* wait for the data to become valid, should be within < 1ms */ - for (i = 0; i < 10; i++) { - ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); - if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) - break; - ret = -EIO; - msleep(1); - } - if (ret < 0) - goto out; - - /* read actual register contents */ - ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val); - if (ret < 0) - goto out; - ret = le16_to_cpu(val); - dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n", - index, val, i); -out: - mutex_unlock(&dev->phy_mutex); - return ret; -} - -static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val) -{ - int ret; - int i; - __le16 le_val; - - u8 cmd[2] = { - HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR, - HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F), - }; - - mutex_lock(&dev->phy_mutex); - - /* write the new register contents */ - le_val = cpu_to_le16(val); - ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val); - if (ret < 0) - goto out; - - /* write the MII command */ - ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); - if (ret < 0) - goto out; - - /* wait for the command to be accepted by the PHY */ - for (i = 0; i < 10; i++) { - ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); - if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) - break; - ret = -EIO; - msleep(1); - } - if (ret < 0) - goto out; - - ret = 0; - dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n", - index, val, i); -out: - mutex_unlock(&dev->phy_mutex); - return ret; -} - -/* - * This algorithm comes from the original mcs7830 version 1.4 driver, - * not sure if it is needed. - */ -static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode) -{ - int ret; - /* Enable all media types */ - ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE); - - /* First reset BMCR */ - if (!ret) - ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000); - /* Enable Auto Neg */ - if (!ret) - ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE); - /* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */ - if (!ret) - ret = mcs7830_write_phy(dev, MII_BMCR, - BMCR_ANENABLE | BMCR_ANRESTART ); - return ret < 0 ? : 0; -} - - -/* - * if we can read register 22, the chip revision is C or higher - */ -static int mcs7830_get_rev(struct usbnet *dev) -{ - u8 dummy[2]; - int ret; - ret = mcs7830_get_reg(dev, HIF_REG_22, 2, dummy); - if (ret > 0) - return 2; /* Rev C or later */ - return 1; /* earlier revision */ -} - -/* - * 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"); |