diff options
Diffstat (limited to 'drivers/usb/net/dm9601.c')
| -rw-r--r-- | drivers/usb/net/dm9601.c | 619 |
1 files changed, 0 insertions, 619 deletions
diff --git a/drivers/usb/net/dm9601.c b/drivers/usb/net/dm9601.c deleted file mode 100644 index a676386..0000000 --- a/drivers/usb/net/dm9601.c +++ /dev/null @@ -1,619 +0,0 @@ -/* - * Davicom DM9601 USB 1.1 10/100Mbps ethernet devices - * - * Peter Korsgaard <jacmet@sunsite.dk> - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - */ - -//#define DEBUG - -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/stddef.h> -#include <linux/init.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/mii.h> -#include <linux/usb.h> -#include <linux/crc32.h> - -#include "usbnet.h" - -/* datasheet: - http://www.davicom.com.tw/big5/download/Data%20Sheet/DM9601-DS-P01-930914.pdf -*/ - -/* control requests */ -#define DM_READ_REGS 0x00 -#define DM_WRITE_REGS 0x01 -#define DM_READ_MEMS 0x02 -#define DM_WRITE_REG 0x03 -#define DM_WRITE_MEMS 0x05 -#define DM_WRITE_MEM 0x07 - -/* registers */ -#define DM_NET_CTRL 0x00 -#define DM_RX_CTRL 0x05 -#define DM_SHARED_CTRL 0x0b -#define DM_SHARED_ADDR 0x0c -#define DM_SHARED_DATA 0x0d /* low + high */ -#define DM_PHY_ADDR 0x10 /* 6 bytes */ -#define DM_MCAST_ADDR 0x16 /* 8 bytes */ -#define DM_GPR_CTRL 0x1e -#define DM_GPR_DATA 0x1f - -#define DM_MAX_MCAST 64 -#define DM_MCAST_SIZE 8 -#define DM_EEPROM_LEN 256 -#define DM_TX_OVERHEAD 2 /* 2 byte header */ -#define DM_RX_OVERHEAD 7 /* 3 byte header + 4 byte crc tail */ -#define DM_TIMEOUT 1000 - - -static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data) -{ - devdbg(dev, "dm_read() reg=0x%02x length=%d", reg, length); - return usb_control_msg(dev->udev, - usb_rcvctrlpipe(dev->udev, 0), - DM_READ_REGS, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 0, reg, data, length, USB_CTRL_SET_TIMEOUT); -} - -static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value) -{ - return dm_read(dev, reg, 1, value); -} - -static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data) -{ - devdbg(dev, "dm_write() reg=0x%02x, length=%d", reg, length); - return usb_control_msg(dev->udev, - usb_sndctrlpipe(dev->udev, 0), - DM_WRITE_REGS, - USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE, - 0, reg, data, length, USB_CTRL_SET_TIMEOUT); -} - -static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value) -{ - devdbg(dev, "dm_write_reg() reg=0x%02x, value=0x%02x", reg, value); - return usb_control_msg(dev->udev, - usb_sndctrlpipe(dev->udev, 0), - DM_WRITE_REG, - USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE, - value, reg, NULL, 0, USB_CTRL_SET_TIMEOUT); -} - -static void dm_write_async_callback(struct urb *urb) -{ - struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; - - if (urb->status < 0) - printk(KERN_DEBUG "dm_write_async_callback() failed with %d", - urb->status); - - kfree(req); - usb_free_urb(urb); -} - -static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, void *data) -{ - struct usb_ctrlrequest *req; - struct urb *urb; - int status; - - devdbg(dev, "dm_write_async() reg=0x%02x length=%d", reg, length); - - urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!urb) { - deverr(dev, "Error allocating URB in dm_write_async!"); - return; - } - - req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC); - if (!req) { - deverr(dev, "Failed to allocate memory for control request"); - usb_free_urb(urb); - return; - } - - req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE; - req->bRequest = DM_WRITE_REGS; - req->wValue = 0; - req->wIndex = cpu_to_le16(reg); - req->wLength = cpu_to_le16(length); - - usb_fill_control_urb(urb, dev->udev, - usb_sndctrlpipe(dev->udev, 0), - (void *)req, data, length, - dm_write_async_callback, req); - - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status < 0) { - deverr(dev, "Error submitting the control message: status=%d", - status); - kfree(req); - usb_free_urb(urb); - } -} - -static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value) -{ - struct usb_ctrlrequest *req; - struct urb *urb; - int status; - - devdbg(dev, "dm_write_reg_async() reg=0x%02x value=0x%02x", - reg, value); - - urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!urb) { - deverr(dev, "Error allocating URB in dm_write_async!"); - return; - } - - req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC); - if (!req) { - deverr(dev, "Failed to allocate memory for control request"); - usb_free_urb(urb); - return; - } - - req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE; - req->bRequest = DM_WRITE_REG; - req->wValue = cpu_to_le16(value); - req->wIndex = cpu_to_le16(reg); - req->wLength = 0; - - usb_fill_control_urb(urb, dev->udev, - usb_sndctrlpipe(dev->udev, 0), - (void *)req, NULL, 0, dm_write_async_callback, req); - - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status < 0) { - deverr(dev, "Error submitting the control message: status=%d", - status); - kfree(req); - usb_free_urb(urb); - } -} - -static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, u16 *value) -{ - int ret, i; - - mutex_lock(&dev->phy_mutex); - - dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg); - dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4); - - for (i = 0; i < DM_TIMEOUT; i++) { - u8 tmp; - - udelay(1); - ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp); - if (ret < 0) - goto out; - - /* ready */ - if ((tmp & 1) == 0) - break; - } - - if (i == DM_TIMEOUT) { - deverr(dev, "%s read timed out!", phy ? "phy" : "eeprom"); - ret = -EIO; - goto out; - } - - dm_write_reg(dev, DM_SHARED_CTRL, 0x0); - ret = dm_read(dev, DM_SHARED_DATA, 2, value); - - devdbg(dev, "read shared %d 0x%02x returned 0x%04x, %d", - phy, reg, *value, ret); - - out: - mutex_unlock(&dev->phy_mutex); - return ret; -} - -static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, u16 value) -{ - int ret, i; - - mutex_lock(&dev->phy_mutex); - - ret = dm_write(dev, DM_SHARED_DATA, 2, &value); - if (ret < 0) - goto out; - - dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg); - dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1c : 0x14); - - for (i = 0; i < DM_TIMEOUT; i++) { - u8 tmp; - - udelay(1); - ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp); - if (ret < 0) - goto out; - - /* ready */ - if ((tmp & 1) == 0) - break; - } - - if (i == DM_TIMEOUT) { - deverr(dev, "%s write timed out!", phy ? "phy" : "eeprom"); - ret = -EIO; - goto out; - } - - dm_write_reg(dev, DM_SHARED_CTRL, 0x0); - -out: - mutex_unlock(&dev->phy_mutex); - return ret; -} - -static int dm_read_eeprom_word(struct usbnet *dev, u8 offset, void *value) -{ - return dm_read_shared_word(dev, 0, offset, value); -} - - - -static int dm9601_get_eeprom_len(struct net_device *dev) -{ - return DM_EEPROM_LEN; -} - -static int dm9601_get_eeprom(struct net_device *net, - struct ethtool_eeprom *eeprom, u8 * data) -{ - struct usbnet *dev = netdev_priv(net); - u16 *ebuf = (u16 *) data; - int i; - - /* access is 16bit */ - if ((eeprom->offset % 2) || (eeprom->len % 2)) - return -EINVAL; - - for (i = 0; i < eeprom->len / 2; i++) { - if (dm_read_eeprom_word(dev, eeprom->offset / 2 + i, - &ebuf[i]) < 0) - return -EINVAL; - } - return 0; -} - -static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc) -{ - struct usbnet *dev = netdev_priv(netdev); - - u16 res; - - if (phy_id) { - devdbg(dev, "Only internal phy supported"); - return 0; - } - - dm_read_shared_word(dev, 1, loc, &res); - - devdbg(dev, - "dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x", - phy_id, loc, le16_to_cpu(res)); - - return le16_to_cpu(res); -} - -static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc, - int val) -{ - struct usbnet *dev = netdev_priv(netdev); - u16 res = cpu_to_le16(val); - - if (phy_id) { - devdbg(dev, "Only internal phy supported"); - return; - } - - devdbg(dev,"dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x", - phy_id, loc, val); - - dm_write_shared_word(dev, 1, loc, res); -} - -static void dm9601_get_drvinfo(struct net_device *net, - struct ethtool_drvinfo *info) -{ - /* Inherit standard device info */ - usbnet_get_drvinfo(net, info); - info->eedump_len = DM_EEPROM_LEN; -} - -static u32 dm9601_get_link(struct net_device *net) -{ - struct usbnet *dev = netdev_priv(net); - - return mii_link_ok(&dev->mii); -} - -static int dm9601_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); -} - -static struct ethtool_ops dm9601_ethtool_ops = { - .get_drvinfo = dm9601_get_drvinfo, - .get_link = dm9601_get_link, - .get_msglevel = usbnet_get_msglevel, - .set_msglevel = usbnet_set_msglevel, - .get_eeprom_len = dm9601_get_eeprom_len, - .get_eeprom = dm9601_get_eeprom, - .get_settings = usbnet_get_settings, - .set_settings = usbnet_set_settings, - .nway_reset = usbnet_nway_reset, -}; - -static void dm9601_set_multicast(struct net_device *net) -{ - struct usbnet *dev = netdev_priv(net); - /* We use the 20 byte dev->data for our 8 byte filter buffer - * to avoid allocating memory that is tricky to free later */ - u8 *hashes = (u8 *) & dev->data; - u8 rx_ctl = 0x01; - - memset(hashes, 0x00, DM_MCAST_SIZE); - hashes[DM_MCAST_SIZE - 1] |= 0x80; /* broadcast address */ - - if (net->flags & IFF_PROMISC) { - rx_ctl |= 0x02; - } else if (net->flags & IFF_ALLMULTI || net->mc_count > DM_MAX_MCAST) { - rx_ctl |= 0x04; - } else if (net->mc_count) { - struct dev_mc_list *mc_list = net->mc_list; - int i; - - for (i = 0; i < net->mc_count; i++) { - u32 crc = ether_crc(ETH_ALEN, mc_list->dmi_addr) >> 26; - hashes[crc >> 3] |= 1 << (crc & 0x7); - } - } - - dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes); - dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl); -} - -static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf) -{ - int ret; - - ret = usbnet_get_endpoints(dev, intf); - if (ret) - goto out; - - dev->net->do_ioctl = dm9601_ioctl; - dev->net->set_multicast_list = dm9601_set_multicast; - dev->net->ethtool_ops = &dm9601_ethtool_ops; - dev->net->hard_header_len += DM_TX_OVERHEAD; - dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; - dev->rx_urb_size = dev->net->mtu + DM_RX_OVERHEAD; - - dev->mii.dev = dev->net; - dev->mii.mdio_read = dm9601_mdio_read; - dev->mii.mdio_write = dm9601_mdio_write; - dev->mii.phy_id_mask = 0x1f; - dev->mii.reg_num_mask = 0x1f; - - /* reset */ - ret = dm_write_reg(dev, DM_NET_CTRL, 1); - udelay(20); - - /* read MAC */ - ret = dm_read(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr); - if (ret < 0) { - printk(KERN_ERR "Error reading MAC address\n"); - ret = -ENODEV; - goto out; - } - - - /* power up phy */ - dm_write_reg(dev, DM_GPR_CTRL, 1); - dm_write_reg(dev, DM_GPR_DATA, 0); - - /* receive broadcast packets */ - dm9601_set_multicast(dev->net); - - dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET); - dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, - ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP); - mii_nway_restart(&dev->mii); - -out: - return ret; -} - -static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb) -{ - u8 status; - int len; - - /* format: - b0: rx status - b1: packet length (incl crc) low - b2: packet length (incl crc) high - b3..n-4: packet data - bn-3..bn: ethernet crc - */ - - if (unlikely(skb->len < DM_RX_OVERHEAD)) { - dev_err(&dev->udev->dev, "unexpected tiny rx frame\n"); - return 0; - } - - status = skb->data[0]; - len = (skb->data[1] | (skb->data[2] << 8)) - 4; - - if (unlikely(status & 0xbf)) { - if (status & 0x01) dev->stats.rx_fifo_errors++; - if (status & 0x02) dev->stats.rx_crc_errors++; - if (status & 0x04) dev->stats.rx_frame_errors++; - if (status & 0x20) dev->stats.rx_missed_errors++; - if (status & 0x90) dev->stats.rx_length_errors++; - return 0; - } - - skb_pull(skb, 3); - skb_trim(skb, len); - - return 1; -} - -static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb, - gfp_t flags) -{ - int len; - - /* format: - b0: packet length low - b1: packet length high - b3..n: packet data - */ - - if (skb_headroom(skb) < DM_TX_OVERHEAD) { - struct sk_buff *skb2; - - skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, 0, flags); - dev_kfree_skb_any(skb); - skb = skb2; - if (!skb) - return NULL; - } - - __skb_push(skb, DM_TX_OVERHEAD); - - len = skb->len; - /* usbnet adds padding if length is a multiple of packet size - if so, adjust length value in header */ - if ((len % dev->maxpacket) == 0) - len++; - - skb->data[0] = len; - skb->data[1] = len >> 8; - - return skb; -} - -static void dm9601_status(struct usbnet *dev, struct urb *urb) -{ - int link; - u8 *buf; - - /* format: - b0: net status - b1: tx status 1 - b2: tx status 2 - b3: rx status - b4: rx overflow - b5: rx count - b6: tx count - b7: gpr - */ - - if (urb->actual_length < 8) - return; - - buf = urb->transfer_buffer; - - link = !!(buf[0] & 0x40); - if (netif_carrier_ok(dev->net) != link) { - if (link) { - netif_carrier_on(dev->net); - usbnet_defer_kevent (dev, EVENT_LINK_RESET); - } - else - netif_carrier_off(dev->net); - devdbg(dev, "Link Status is: %d", link); - } -} - -static int dm9601_link_reset(struct usbnet *dev) -{ - struct ethtool_cmd ecmd; - - mii_check_media(&dev->mii, 1, 1); - mii_ethtool_gset(&dev->mii, &ecmd); - - devdbg(dev, "link_reset() speed: %d duplex: %d", - ecmd.speed, ecmd.duplex); - - return 0; -} - -static const struct driver_info dm9601_info = { - .description = "Davicom DM9601 USB Ethernet", - .flags = FLAG_ETHER, - .bind = dm9601_bind, - .rx_fixup = dm9601_rx_fixup, - .tx_fixup = dm9601_tx_fixup, - .status = dm9601_status, - .link_reset = dm9601_link_reset, - .reset = dm9601_link_reset, -}; - -static const struct usb_device_id products[] = { - { - USB_DEVICE(0x07aa, 0x9601), /* Corega FEther USB-TXC */ - .driver_info = (unsigned long)&dm9601_info, - }, - { - USB_DEVICE(0x0a46, 0x9601), /* Davicom USB-100 */ - .driver_info = (unsigned long)&dm9601_info, - }, - { - USB_DEVICE(0x0a46, 0x6688), /* ZT6688 USB NIC */ - .driver_info = (unsigned long)&dm9601_info, - }, - { - USB_DEVICE(0x0a46, 0x0268), /* ShanTou ST268 USB NIC */ - .driver_info = (unsigned long)&dm9601_info, - }, - {}, // END -}; - -MODULE_DEVICE_TABLE(usb, products); - -static struct usb_driver dm9601_driver = { - .name = "dm9601", - .id_table = products, - .probe = usbnet_probe, - .disconnect = usbnet_disconnect, - .suspend = usbnet_suspend, - .resume = usbnet_resume, -}; - -static int __init dm9601_init(void) -{ - return usb_register(&dm9601_driver); -} - -static void __exit dm9601_exit(void) -{ - usb_deregister(&dm9601_driver); -} - -module_init(dm9601_init); -module_exit(dm9601_exit); - -MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>"); -MODULE_DESCRIPTION("Davicom DM9601 USB 1.1 ethernet devices"); -MODULE_LICENSE("GPL"); |