linux/drivers/net/usb/smsc75xx.c

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/***************************************************************************
*
* Copyright (C) 2007-2010 SMSC
*
* 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/kmod.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 <linux/usb/usbnet.h>
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
#include <linux/slab.h>
#include "smsc75xx.h"
#define SMSC_CHIPNAME "smsc75xx"
#define SMSC_DRIVER_VERSION "1.0.0"
#define HS_USB_PKT_SIZE (512)
#define FS_USB_PKT_SIZE (64)
#define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
#define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
#define DEFAULT_BULK_IN_DELAY (0x00002000)
#define MAX_SINGLE_PACKET_SIZE (9000)
#define LAN75XX_EEPROM_MAGIC (0x7500)
#define EEPROM_MAC_OFFSET (0x01)
#define DEFAULT_TX_CSUM_ENABLE (true)
#define DEFAULT_RX_CSUM_ENABLE (true)
#define DEFAULT_TSO_ENABLE (true)
#define SMSC75XX_INTERNAL_PHY_ID (1)
#define SMSC75XX_TX_OVERHEAD (8)
#define MAX_RX_FIFO_SIZE (20 * 1024)
#define MAX_TX_FIFO_SIZE (12 * 1024)
#define USB_VENDOR_ID_SMSC (0x0424)
#define USB_PRODUCT_ID_LAN7500 (0x7500)
#define USB_PRODUCT_ID_LAN7505 (0x7505)
#define check_warn(ret, fmt, args...) \
({ if (ret < 0) netdev_warn(dev->net, fmt, ##args); })
#define check_warn_return(ret, fmt, args...) \
({ if (ret < 0) { netdev_warn(dev->net, fmt, ##args); return ret; } })
#define check_warn_goto_done(ret, fmt, args...) \
({ if (ret < 0) { netdev_warn(dev->net, fmt, ##args); goto done; } })
struct smsc75xx_priv {
struct usbnet *dev;
u32 rfe_ctl;
u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN];
bool use_rx_csum;
struct mutex dataport_mutex;
spinlock_t rfe_ctl_lock;
struct work_struct set_multicast;
};
struct usb_context {
struct usb_ctrlrequest req;
struct usbnet *dev;
};
static int turbo_mode = true;
module_param(turbo_mode, bool, 0644);
MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index,
u32 *data)
{
u32 *buf = kmalloc(4, GFP_KERNEL);
int ret;
BUG_ON(!dev);
if (!buf)
return -ENOMEM;
ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
USB_VENDOR_REQUEST_READ_REGISTER,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
00, index, buf, 4, USB_CTRL_GET_TIMEOUT);
if (unlikely(ret < 0))
netdev_warn(dev->net,
"Failed to read register index 0x%08x", index);
le32_to_cpus(buf);
*data = *buf;
kfree(buf);
return ret;
}
static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index,
u32 data)
{
u32 *buf = kmalloc(4, GFP_KERNEL);
int ret;
BUG_ON(!dev);
if (!buf)
return -ENOMEM;
*buf = data;
cpu_to_le32s(buf);
ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
USB_VENDOR_REQUEST_WRITE_REGISTER,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
00, index, buf, 4, USB_CTRL_SET_TIMEOUT);
if (unlikely(ret < 0))
netdev_warn(dev->net,
"Failed to write register index 0x%08x", index);
kfree(buf);
return ret;
}
/* Loop until the read is completed with timeout
* called with phy_mutex held */
static int smsc75xx_phy_wait_not_busy(struct usbnet *dev)
{
unsigned long start_time = jiffies;
u32 val;
int ret;
do {
ret = smsc75xx_read_reg(dev, MII_ACCESS, &val);
check_warn_return(ret, "Error reading MII_ACCESS");
if (!(val & MII_ACCESS_BUSY))
return 0;
} while (!time_after(jiffies, start_time + HZ));
return -EIO;
}
static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
{
struct usbnet *dev = netdev_priv(netdev);
u32 val, addr;
int ret;
mutex_lock(&dev->phy_mutex);
/* confirm MII not busy */
ret = smsc75xx_phy_wait_not_busy(dev);
check_warn_goto_done(ret, "MII is busy in smsc75xx_mdio_read");
/* set the address, index & direction (read from PHY) */
phy_id &= dev->mii.phy_id_mask;
idx &= dev->mii.reg_num_mask;
addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
| ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
| MII_ACCESS_READ;
ret = smsc75xx_write_reg(dev, MII_ACCESS, addr);
check_warn_goto_done(ret, "Error writing MII_ACCESS");
ret = smsc75xx_phy_wait_not_busy(dev);
check_warn_goto_done(ret, "Timed out reading MII reg %02X", idx);
ret = smsc75xx_read_reg(dev, MII_DATA, &val);
check_warn_goto_done(ret, "Error reading MII_DATA");
ret = (u16)(val & 0xFFFF);
done:
mutex_unlock(&dev->phy_mutex);
return ret;
}
static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
int regval)
{
struct usbnet *dev = netdev_priv(netdev);
u32 val, addr;
int ret;
mutex_lock(&dev->phy_mutex);
/* confirm MII not busy */
ret = smsc75xx_phy_wait_not_busy(dev);
check_warn_goto_done(ret, "MII is busy in smsc75xx_mdio_write");
val = regval;
ret = smsc75xx_write_reg(dev, MII_DATA, val);
check_warn_goto_done(ret, "Error writing MII_DATA");
/* set the address, index & direction (write to PHY) */
phy_id &= dev->mii.phy_id_mask;
idx &= dev->mii.reg_num_mask;
addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
| ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
| MII_ACCESS_WRITE;
ret = smsc75xx_write_reg(dev, MII_ACCESS, addr);
check_warn_goto_done(ret, "Error writing MII_ACCESS");
ret = smsc75xx_phy_wait_not_busy(dev);
check_warn_goto_done(ret, "Timed out writing MII reg %02X", idx);
done:
mutex_unlock(&dev->phy_mutex);
}
static int smsc75xx_wait_eeprom(struct usbnet *dev)
{
unsigned long start_time = jiffies;
u32 val;
int ret;
do {
ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
check_warn_return(ret, "Error reading E2P_CMD");
if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT))
break;
udelay(40);
} while (!time_after(jiffies, start_time + HZ));
if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) {
netdev_warn(dev->net, "EEPROM read operation timeout");
return -EIO;
}
return 0;
}
static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev)
{
unsigned long start_time = jiffies;
u32 val;
int ret;
do {
ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
check_warn_return(ret, "Error reading E2P_CMD");
if (!(val & E2P_CMD_BUSY))
return 0;
udelay(40);
} while (!time_after(jiffies, start_time + HZ));
netdev_warn(dev->net, "EEPROM is busy");
return -EIO;
}
static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
u8 *data)
{
u32 val;
int i, ret;
BUG_ON(!dev);
BUG_ON(!data);
ret = smsc75xx_eeprom_confirm_not_busy(dev);
if (ret)
return ret;
for (i = 0; i < length; i++) {
val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR);
ret = smsc75xx_write_reg(dev, E2P_CMD, val);
check_warn_return(ret, "Error writing E2P_CMD");
ret = smsc75xx_wait_eeprom(dev);
if (ret < 0)
return ret;
ret = smsc75xx_read_reg(dev, E2P_DATA, &val);
check_warn_return(ret, "Error reading E2P_DATA");
data[i] = val & 0xFF;
offset++;
}
return 0;
}
static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
u8 *data)
{
u32 val;
int i, ret;
BUG_ON(!dev);
BUG_ON(!data);
ret = smsc75xx_eeprom_confirm_not_busy(dev);
if (ret)
return ret;
/* Issue write/erase enable command */
val = E2P_CMD_BUSY | E2P_CMD_EWEN;
ret = smsc75xx_write_reg(dev, E2P_CMD, val);
check_warn_return(ret, "Error writing E2P_CMD");
ret = smsc75xx_wait_eeprom(dev);
if (ret < 0)
return ret;
for (i = 0; i < length; i++) {
/* Fill data register */
val = data[i];
ret = smsc75xx_write_reg(dev, E2P_DATA, val);
check_warn_return(ret, "Error writing E2P_DATA");
/* Send "write" command */
val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR);
ret = smsc75xx_write_reg(dev, E2P_CMD, val);
check_warn_return(ret, "Error writing E2P_CMD");
ret = smsc75xx_wait_eeprom(dev);
if (ret < 0)
return ret;
offset++;
}
return 0;
}
static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev)
{
int i, ret;
for (i = 0; i < 100; i++) {
u32 dp_sel;
ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
check_warn_return(ret, "Error reading DP_SEL");
if (dp_sel & DP_SEL_DPRDY)
return 0;
udelay(40);
}
netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out");
return -EIO;
}
static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr,
u32 length, u32 *buf)
{
struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
u32 dp_sel;
int i, ret;
mutex_lock(&pdata->dataport_mutex);
ret = smsc75xx_dataport_wait_not_busy(dev);
check_warn_goto_done(ret, "smsc75xx_dataport_write busy on entry");
ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
check_warn_goto_done(ret, "Error reading DP_SEL");
dp_sel &= ~DP_SEL_RSEL;
dp_sel |= ram_select;
ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel);
check_warn_goto_done(ret, "Error writing DP_SEL");
for (i = 0; i < length; i++) {
ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i);
check_warn_goto_done(ret, "Error writing DP_ADDR");
ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]);
check_warn_goto_done(ret, "Error writing DP_DATA");
ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE);
check_warn_goto_done(ret, "Error writing DP_CMD");
ret = smsc75xx_dataport_wait_not_busy(dev);
check_warn_goto_done(ret, "smsc75xx_dataport_write timeout");
}
done:
mutex_unlock(&pdata->dataport_mutex);
return ret;
}
/* returns hash bit number for given MAC address */
static u32 smsc75xx_hash(char addr[ETH_ALEN])
{
return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
}
static void smsc75xx_deferred_multicast_write(struct work_struct *param)
{
struct smsc75xx_priv *pdata =
container_of(param, struct smsc75xx_priv, set_multicast);
struct usbnet *dev = pdata->dev;
int ret;
netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x",
pdata->rfe_ctl);
smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN,
DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table);
ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
check_warn(ret, "Error writing RFE_CRL");
}
static void smsc75xx_set_multicast(struct net_device *netdev)
{
struct usbnet *dev = netdev_priv(netdev);
struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
unsigned long flags;
int i;
spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
pdata->rfe_ctl &=
~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF);
pdata->rfe_ctl |= RFE_CTL_AB;
for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
pdata->multicast_hash_table[i] = 0;
if (dev->net->flags & IFF_PROMISC) {
netif_dbg(dev, drv, dev->net, "promiscuous mode enabled");
pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU;
} else if (dev->net->flags & IFF_ALLMULTI) {
netif_dbg(dev, drv, dev->net, "receive all multicast enabled");
pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF;
} else if (!netdev_mc_empty(dev->net)) {
struct netdev_hw_addr *ha;
netif_dbg(dev, drv, dev->net, "receive multicast hash filter");
pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF;
netdev_for_each_mc_addr(ha, netdev) {
u32 bitnum = smsc75xx_hash(ha->addr);
pdata->multicast_hash_table[bitnum / 32] |=
(1 << (bitnum % 32));
}
} else {
netif_dbg(dev, drv, dev->net, "receive own packets only");
pdata->rfe_ctl |= RFE_CTL_DPF;
}
spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
/* defer register writes to a sleepable context */
schedule_work(&pdata->set_multicast);
}
static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex,
u16 lcladv, u16 rmtadv)
{
u32 flow = 0, fct_flow = 0;
int ret;
if (duplex == DUPLEX_FULL) {
u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
if (cap & FLOW_CTRL_TX) {
flow = (FLOW_TX_FCEN | 0xFFFF);
/* set fct_flow thresholds to 20% and 80% */
fct_flow = (8 << 8) | 32;
}
if (cap & FLOW_CTRL_RX)
flow |= FLOW_RX_FCEN;
netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s",
(cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
(cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
} else {
netif_dbg(dev, link, dev->net, "half duplex");
}
ret = smsc75xx_write_reg(dev, FLOW, flow);
check_warn_return(ret, "Error writing FLOW");
ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow);
check_warn_return(ret, "Error writing FCT_FLOW");
return 0;
}
static int smsc75xx_link_reset(struct usbnet *dev)
{
struct mii_if_info *mii = &dev->mii;
struct ethtool_cmd ecmd;
u16 lcladv, rmtadv;
int ret;
/* clear interrupt status */
ret = smsc75xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC);
check_warn_return(ret, "Error reading PHY_INT_SRC");
ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
check_warn_return(ret, "Error writing INT_STS");
mii_check_media(mii, 1, 1);
mii_ethtool_gset(&dev->mii, &ecmd);
lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
netif_dbg(dev, link, dev->net, "speed: %d duplex: %d lcladv: %04x"
" rmtadv: %04x", ecmd.speed, ecmd.duplex, lcladv, rmtadv);
return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
}
static void smsc75xx_status(struct usbnet *dev, struct urb *urb)
{
u32 intdata;
if (urb->actual_length != 4) {
netdev_warn(dev->net,
"unexpected urb length %d", urb->actual_length);
return;
}
memcpy(&intdata, urb->transfer_buffer, 4);
le32_to_cpus(&intdata);
netif_dbg(dev, link, dev->net, "intdata: 0x%08X", intdata);
if (intdata & INT_ENP_PHY_INT)
usbnet_defer_kevent(dev, EVENT_LINK_RESET);
else
netdev_warn(dev->net,
"unexpected interrupt, intdata=0x%08X", intdata);
}
/* Enable or disable Rx checksum offload engine */
static int smsc75xx_set_rx_csum_offload(struct usbnet *dev)
{
struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
unsigned long flags;
int ret;
spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
if (pdata->use_rx_csum)
pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM;
else
pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM);
spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
check_warn_return(ret, "Error writing RFE_CTL");
return 0;
}
static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net)
{
return MAX_EEPROM_SIZE;
}
static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev,
struct ethtool_eeprom *ee, u8 *data)
{
struct usbnet *dev = netdev_priv(netdev);
ee->magic = LAN75XX_EEPROM_MAGIC;
return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data);
}
static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev,
struct ethtool_eeprom *ee, u8 *data)
{
struct usbnet *dev = netdev_priv(netdev);
if (ee->magic != LAN75XX_EEPROM_MAGIC) {
netdev_warn(dev->net,
"EEPROM: magic value mismatch: 0x%x", ee->magic);
return -EINVAL;
}
return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data);
}
static u32 smsc75xx_ethtool_get_rx_csum(struct net_device *netdev)
{
struct usbnet *dev = netdev_priv(netdev);
struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
return pdata->use_rx_csum;
}
static int smsc75xx_ethtool_set_rx_csum(struct net_device *netdev, u32 val)
{
struct usbnet *dev = netdev_priv(netdev);
struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
pdata->use_rx_csum = !!val;
return smsc75xx_set_rx_csum_offload(dev);
}
static int smsc75xx_ethtool_set_tso(struct net_device *netdev, u32 data)
{
if (data)
netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
else
netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
return 0;
}
static const struct ethtool_ops smsc75xx_ethtool_ops = {
.get_link = usbnet_get_link,
.nway_reset = usbnet_nway_reset,
.get_drvinfo = usbnet_get_drvinfo,
.get_msglevel = usbnet_get_msglevel,
.set_msglevel = usbnet_set_msglevel,
.get_settings = usbnet_get_settings,
.set_settings = usbnet_set_settings,
.get_eeprom_len = smsc75xx_ethtool_get_eeprom_len,
.get_eeprom = smsc75xx_ethtool_get_eeprom,
.set_eeprom = smsc75xx_ethtool_set_eeprom,
.get_tx_csum = ethtool_op_get_tx_csum,
.set_tx_csum = ethtool_op_set_tx_hw_csum,
.get_rx_csum = smsc75xx_ethtool_get_rx_csum,
.set_rx_csum = smsc75xx_ethtool_set_rx_csum,
.get_tso = ethtool_op_get_tso,
.set_tso = smsc75xx_ethtool_set_tso,
};
static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
{
struct usbnet *dev = netdev_priv(netdev);
if (!netif_running(netdev))
return -EINVAL;
return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
}
static void smsc75xx_init_mac_address(struct usbnet *dev)
{
/* try reading mac address from EEPROM */
if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
dev->net->dev_addr) == 0) {
if (is_valid_ether_addr(dev->net->dev_addr)) {
/* eeprom values are valid so use them */
netif_dbg(dev, ifup, dev->net,
"MAC address read from EEPROM");
return;
}
}
/* no eeprom, or eeprom values are invalid. generate random MAC */
random_ether_addr(dev->net->dev_addr);
netif_dbg(dev, ifup, dev->net, "MAC address set to random_ether_addr");
}
static int smsc75xx_set_mac_address(struct usbnet *dev)
{
u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi);
check_warn_return(ret, "Failed to write RX_ADDRH: %d", ret);
ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo);
check_warn_return(ret, "Failed to write RX_ADDRL: %d", ret);
addr_hi |= ADDR_FILTX_FB_VALID;
ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi);
check_warn_return(ret, "Failed to write ADDR_FILTX: %d", ret);
ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo);
check_warn_return(ret, "Failed to write ADDR_FILTX+4: %d", ret);
return 0;
}
static int smsc75xx_phy_initialize(struct usbnet *dev)
{
int bmcr, timeout = 0;
/* Initialize MII structure */
dev->mii.dev = dev->net;
dev->mii.mdio_read = smsc75xx_mdio_read;
dev->mii.mdio_write = smsc75xx_mdio_write;
dev->mii.phy_id_mask = 0x1f;
dev->mii.reg_num_mask = 0x1f;
dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID;
/* reset phy and wait for reset to complete */
smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
do {
msleep(10);
bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
check_warn_return(bmcr, "Error reading MII_BMCR");
timeout++;
} while ((bmcr & MII_BMCR) && (timeout < 100));
if (timeout >= 100) {
netdev_warn(dev->net, "timeout on PHY Reset");
return -EIO;
}
smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
ADVERTISE_PAUSE_ASYM);
/* read to clear */
smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
check_warn_return(bmcr, "Error reading PHY_INT_SRC");
smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
PHY_INT_MASK_DEFAULT);
mii_nway_restart(&dev->mii);
netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
return 0;
}
static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size)
{
int ret = 0;
u32 buf;
bool rxenabled;
ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
check_warn_return(ret, "Failed to read MAC_RX: %d", ret);
rxenabled = ((buf & MAC_RX_RXEN) != 0);
if (rxenabled) {
buf &= ~MAC_RX_RXEN;
ret = smsc75xx_write_reg(dev, MAC_RX, buf);
check_warn_return(ret, "Failed to write MAC_RX: %d", ret);
}
/* add 4 to size for FCS */
buf &= ~MAC_RX_MAX_SIZE;
buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE);
ret = smsc75xx_write_reg(dev, MAC_RX, buf);
check_warn_return(ret, "Failed to write MAC_RX: %d", ret);
if (rxenabled) {
buf |= MAC_RX_RXEN;
ret = smsc75xx_write_reg(dev, MAC_RX, buf);
check_warn_return(ret, "Failed to write MAC_RX: %d", ret);
}
return 0;
}
static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu)
{
struct usbnet *dev = netdev_priv(netdev);
int ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu);
check_warn_return(ret, "Failed to set mac rx frame length");
return usbnet_change_mtu(netdev, new_mtu);
}
static int smsc75xx_reset(struct usbnet *dev)
{
struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
u32 buf;
int ret = 0, timeout;
netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset");
ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
check_warn_return(ret, "Failed to read HW_CFG: %d", ret);
buf |= HW_CFG_LRST;
ret = smsc75xx_write_reg(dev, HW_CFG, buf);
check_warn_return(ret, "Failed to write HW_CFG: %d", ret);
timeout = 0;
do {
msleep(10);
ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
check_warn_return(ret, "Failed to read HW_CFG: %d", ret);
timeout++;
} while ((buf & HW_CFG_LRST) && (timeout < 100));
if (timeout >= 100) {
netdev_warn(dev->net, "timeout on completion of Lite Reset");
return -EIO;
}
netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY");
ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
check_warn_return(ret, "Failed to read PMT_CTL: %d", ret);
buf |= PMT_CTL_PHY_RST;
ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
check_warn_return(ret, "Failed to write PMT_CTL: %d", ret);
timeout = 0;
do {
msleep(10);
ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
check_warn_return(ret, "Failed to read PMT_CTL: %d", ret);
timeout++;
} while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
if (timeout >= 100) {
netdev_warn(dev->net, "timeout waiting for PHY Reset");
return -EIO;
}
netif_dbg(dev, ifup, dev->net, "PHY reset complete");
smsc75xx_init_mac_address(dev);
ret = smsc75xx_set_mac_address(dev);
check_warn_return(ret, "Failed to set mac address");
netif_dbg(dev, ifup, dev->net, "MAC Address: %pM", dev->net->dev_addr);
ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
check_warn_return(ret, "Failed to read HW_CFG: %d", ret);
netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x", buf);
buf |= HW_CFG_BIR;
ret = smsc75xx_write_reg(dev, HW_CFG, buf);
check_warn_return(ret, "Failed to write HW_CFG: %d", ret);
ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
check_warn_return(ret, "Failed to read HW_CFG: %d", ret);
netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after "
"writing HW_CFG_BIR: 0x%08x", buf);
if (!turbo_mode) {
buf = 0;
dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
} else if (dev->udev->speed == USB_SPEED_HIGH) {
buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
} else {
buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
}
netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld",
(ulong)dev->rx_urb_size);
ret = smsc75xx_write_reg(dev, BURST_CAP, buf);
check_warn_return(ret, "Failed to write BURST_CAP: %d", ret);
ret = smsc75xx_read_reg(dev, BURST_CAP, &buf);
check_warn_return(ret, "Failed to read BURST_CAP: %d", ret);
netif_dbg(dev, ifup, dev->net,
"Read Value from BURST_CAP after writing: 0x%08x", buf);
ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
check_warn_return(ret, "Failed to write BULK_IN_DLY: %d", ret);
ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf);
check_warn_return(ret, "Failed to read BULK_IN_DLY: %d", ret);
netif_dbg(dev, ifup, dev->net,
"Read Value from BULK_IN_DLY after writing: 0x%08x", buf);
if (turbo_mode) {
ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
check_warn_return(ret, "Failed to read HW_CFG: %d", ret);
netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x", buf);
buf |= (HW_CFG_MEF | HW_CFG_BCE);
ret = smsc75xx_write_reg(dev, HW_CFG, buf);
check_warn_return(ret, "Failed to write HW_CFG: %d", ret);
ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
check_warn_return(ret, "Failed to read HW_CFG: %d", ret);
netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x", buf);
}
/* set FIFO sizes */
buf = (MAX_RX_FIFO_SIZE - 512) / 512;
ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf);
check_warn_return(ret, "Failed to write FCT_RX_FIFO_END: %d", ret);
netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x", buf);
buf = (MAX_TX_FIFO_SIZE - 512) / 512;
ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf);
check_warn_return(ret, "Failed to write FCT_TX_FIFO_END: %d", ret);
netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x", buf);
ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
check_warn_return(ret, "Failed to write INT_STS: %d", ret);
ret = smsc75xx_read_reg(dev, ID_REV, &buf);
check_warn_return(ret, "Failed to read ID_REV: %d", ret);
netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x", buf);
/* Configure GPIO pins as LED outputs */
ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf);
check_warn_return(ret, "Failed to read LED_GPIO_CFG: %d", ret);
buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL);
buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL;
ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf);
check_warn_return(ret, "Failed to write LED_GPIO_CFG: %d", ret);
ret = smsc75xx_write_reg(dev, FLOW, 0);
check_warn_return(ret, "Failed to write FLOW: %d", ret);
ret = smsc75xx_write_reg(dev, FCT_FLOW, 0);
check_warn_return(ret, "Failed to write FCT_FLOW: %d", ret);
/* Don't need rfe_ctl_lock during initialisation */
ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
check_warn_return(ret, "Failed to read RFE_CTL: %d", ret);
pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF;
ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
check_warn_return(ret, "Failed to write RFE_CTL: %d", ret);
ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
check_warn_return(ret, "Failed to read RFE_CTL: %d", ret);
netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x", pdata->rfe_ctl);
/* Enable or disable checksum offload engines */
ethtool_op_set_tx_hw_csum(dev->net, DEFAULT_TX_CSUM_ENABLE);
ret = smsc75xx_set_rx_csum_offload(dev);
check_warn_return(ret, "Failed to set rx csum offload: %d", ret);
smsc75xx_ethtool_set_tso(dev->net, DEFAULT_TSO_ENABLE);
smsc75xx_set_multicast(dev->net);
ret = smsc75xx_phy_initialize(dev);
check_warn_return(ret, "Failed to initialize PHY: %d", ret);
ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf);
check_warn_return(ret, "Failed to read INT_EP_CTL: %d", ret);
/* enable PHY interrupts */
buf |= INT_ENP_PHY_INT;
ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf);
check_warn_return(ret, "Failed to write INT_EP_CTL: %d", ret);
ret = smsc75xx_read_reg(dev, MAC_TX, &buf);
check_warn_return(ret, "Failed to read MAC_TX: %d", ret);
buf |= MAC_TX_TXEN;
ret = smsc75xx_write_reg(dev, MAC_TX, buf);
check_warn_return(ret, "Failed to write MAC_TX: %d", ret);
netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x", buf);
ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf);
check_warn_return(ret, "Failed to read FCT_TX_CTL: %d", ret);
buf |= FCT_TX_CTL_EN;
ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf);
check_warn_return(ret, "Failed to write FCT_TX_CTL: %d", ret);
netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x", buf);
ret = smsc75xx_set_rx_max_frame_length(dev, 1514);
check_warn_return(ret, "Failed to set max rx frame length");
ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
check_warn_return(ret, "Failed to read MAC_RX: %d", ret);
buf |= MAC_RX_RXEN;
ret = smsc75xx_write_reg(dev, MAC_RX, buf);
check_warn_return(ret, "Failed to write MAC_RX: %d", ret);
netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x", buf);
ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf);
check_warn_return(ret, "Failed to read FCT_RX_CTL: %d", ret);
buf |= FCT_RX_CTL_EN;
ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf);
check_warn_return(ret, "Failed to write FCT_RX_CTL: %d", ret);
netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x", buf);
netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0");
return 0;
}
static const struct net_device_ops smsc75xx_netdev_ops = {
.ndo_open = usbnet_open,
.ndo_stop = usbnet_stop,
.ndo_start_xmit = usbnet_start_xmit,
.ndo_tx_timeout = usbnet_tx_timeout,
.ndo_change_mtu = smsc75xx_change_mtu,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
.ndo_do_ioctl = smsc75xx_ioctl,
.ndo_set_multicast_list = smsc75xx_set_multicast,
};
static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf)
{
struct smsc75xx_priv *pdata = NULL;
int ret;
printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
ret = usbnet_get_endpoints(dev, intf);
check_warn_return(ret, "usbnet_get_endpoints failed: %d", ret);
dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv),
GFP_KERNEL);
pdata = (struct smsc75xx_priv *)(dev->data[0]);
if (!pdata) {
netdev_warn(dev->net, "Unable to allocate smsc75xx_priv");
return -ENOMEM;
}
pdata->dev = dev;
spin_lock_init(&pdata->rfe_ctl_lock);
mutex_init(&pdata->dataport_mutex);
INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write);
pdata->use_rx_csum = DEFAULT_RX_CSUM_ENABLE;
/* We have to advertise SG otherwise TSO cannot be enabled */
dev->net->features |= NETIF_F_SG;
/* Init all registers */
ret = smsc75xx_reset(dev);
dev->net->netdev_ops = &smsc75xx_netdev_ops;
dev->net->ethtool_ops = &smsc75xx_ethtool_ops;
dev->net->flags |= IFF_MULTICAST;
dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD;
return 0;
}
static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf)
{
struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
if (pdata) {
netif_dbg(dev, ifdown, dev->net, "free pdata");
kfree(pdata);
pdata = NULL;
dev->data[0] = 0;
}
}
static void smsc75xx_rx_csum_offload(struct sk_buff *skb, u32 rx_cmd_a,
u32 rx_cmd_b)
{
if (unlikely(rx_cmd_a & RX_CMD_A_LCSM)) {
skb->ip_summed = CHECKSUM_NONE;
} else {
skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT));
skb->ip_summed = CHECKSUM_COMPLETE;
}
}
static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
{
struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
while (skb->len > 0) {
u32 rx_cmd_a, rx_cmd_b, align_count, size;
struct sk_buff *ax_skb;
unsigned char *packet;
memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
le32_to_cpus(&rx_cmd_a);
skb_pull(skb, 4);
memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
le32_to_cpus(&rx_cmd_b);
skb_pull(skb, 4 + NET_IP_ALIGN);
packet = skb->data;
/* get the packet length */
size = (rx_cmd_a & RX_CMD_A_LEN) - NET_IP_ALIGN;
align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4;
if (unlikely(rx_cmd_a & RX_CMD_A_RED)) {
netif_dbg(dev, rx_err, dev->net,
"Error rx_cmd_a=0x%08x", rx_cmd_a);
dev->net->stats.rx_errors++;
dev->net->stats.rx_dropped++;
if (rx_cmd_a & RX_CMD_A_FCS)
dev->net->stats.rx_crc_errors++;
else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT))
dev->net->stats.rx_frame_errors++;
} else {
/* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */
if (unlikely(size > (ETH_FRAME_LEN + 12))) {
netif_dbg(dev, rx_err, dev->net,
"size err rx_cmd_a=0x%08x", rx_cmd_a);
return 0;
}
/* last frame in this batch */
if (skb->len == size) {
if (pdata->use_rx_csum)
smsc75xx_rx_csum_offload(skb, rx_cmd_a,
rx_cmd_b);
else
skb->ip_summed = CHECKSUM_NONE;
skb_trim(skb, skb->len - 4); /* remove fcs */
skb->truesize = size + sizeof(struct sk_buff);
return 1;
}
ax_skb = skb_clone(skb, GFP_ATOMIC);
if (unlikely(!ax_skb)) {
netdev_warn(dev->net, "Error allocating skb");
return 0;
}
ax_skb->len = size;
ax_skb->data = packet;
skb_set_tail_pointer(ax_skb, size);
if (pdata->use_rx_csum)
smsc75xx_rx_csum_offload(ax_skb, rx_cmd_a,
rx_cmd_b);
else
ax_skb->ip_summed = CHECKSUM_NONE;
skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
ax_skb->truesize = size + sizeof(struct sk_buff);
usbnet_skb_return(dev, ax_skb);
}
skb_pull(skb, size);
/* padding bytes before the next frame starts */
if (skb->len)
skb_pull(skb, align_count);
}
if (unlikely(skb->len < 0)) {
netdev_warn(dev->net, "invalid rx length<0 %d", skb->len);
return 0;
}
return 1;
}
static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
struct sk_buff *skb, gfp_t flags)
{
u32 tx_cmd_a, tx_cmd_b;
skb_linearize(skb);
if (skb_headroom(skb) < SMSC75XX_TX_OVERHEAD) {
struct sk_buff *skb2 =
skb_copy_expand(skb, SMSC75XX_TX_OVERHEAD, 0, flags);
dev_kfree_skb_any(skb);
skb = skb2;
if (!skb)
return NULL;
}
tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS;
if (skb->ip_summed == CHECKSUM_PARTIAL)
tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE;
if (skb_is_gso(skb)) {
u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN);
tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS;
tx_cmd_a |= TX_CMD_A_LSO;
} else {
tx_cmd_b = 0;
}
skb_push(skb, 4);
cpu_to_le32s(&tx_cmd_b);
memcpy(skb->data, &tx_cmd_b, 4);
skb_push(skb, 4);
cpu_to_le32s(&tx_cmd_a);
memcpy(skb->data, &tx_cmd_a, 4);
return skb;
}
static const struct driver_info smsc75xx_info = {
.description = "smsc75xx USB 2.0 Gigabit Ethernet",
.bind = smsc75xx_bind,
.unbind = smsc75xx_unbind,
.link_reset = smsc75xx_link_reset,
.reset = smsc75xx_reset,
.rx_fixup = smsc75xx_rx_fixup,
.tx_fixup = smsc75xx_tx_fixup,
.status = smsc75xx_status,
.flags = FLAG_ETHER | FLAG_SEND_ZLP,
};
static const struct usb_device_id products[] = {
{
/* SMSC7500 USB Gigabit Ethernet Device */
USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500),
.driver_info = (unsigned long) &smsc75xx_info,
},
{
/* SMSC7500 USB Gigabit Ethernet Device */
USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505),
.driver_info = (unsigned long) &smsc75xx_info,
},
{ }, /* END */
};
MODULE_DEVICE_TABLE(usb, products);
static struct usb_driver smsc75xx_driver = {
.name = SMSC_CHIPNAME,
.id_table = products,
.probe = usbnet_probe,
.suspend = usbnet_suspend,
.resume = usbnet_resume,
.disconnect = usbnet_disconnect,
};
static int __init smsc75xx_init(void)
{
return usb_register(&smsc75xx_driver);
}
module_init(smsc75xx_init);
static void __exit smsc75xx_exit(void)
{
usb_deregister(&smsc75xx_driver);
}
module_exit(smsc75xx_exit);
MODULE_AUTHOR("Nancy Lin");
MODULE_AUTHOR("Steve Glendinning <steve.glendinning@smsc.com>");
MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices");
MODULE_LICENSE("GPL");