asix: Factor out common code

Allow the new driver for the AX88172A to share code with the
existing drivers for ASIX devices.

Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christian Riesch 2012-07-13 05:26:30 +00:00 committed by David S. Miller
parent b4cdae20ef
commit 607740bc16
4 changed files with 63 additions and 3332 deletions

View File

@ -8,7 +8,7 @@ obj-$(CONFIG_USB_PEGASUS) += pegasus.o
obj-$(CONFIG_USB_RTL8150) += rtl8150.o
obj-$(CONFIG_USB_HSO) += hso.o
obj-$(CONFIG_USB_NET_AX8817X) += asix.o
asix-y := asix_devices.o
asix-y := asix_devices.o asix_common.o
obj-$(CONFIG_USB_NET_CDCETHER) += cdc_ether.o
obj-$(CONFIG_USB_NET_CDC_EEM) += cdc_eem.o
obj-$(CONFIG_USB_NET_DM9601) += dm9601.o

File diff suppressed because it is too large Load Diff

File diff suppressed because it is too large Load Diff

View File

@ -20,137 +20,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
// #define DEBUG // error path messages, extra info
// #define VERBOSE // more; success messages
#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/workqueue.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/crc32.h>
#include <linux/usb/usbnet.h>
#include <linux/slab.h>
#include <linux/if_vlan.h>
#define DRIVER_VERSION "22-Dec-2011"
#define DRIVER_NAME "asix"
/* ASIX AX8817X based USB 2.0 Ethernet Devices */
#define AX_CMD_SET_SW_MII 0x06
#define AX_CMD_READ_MII_REG 0x07
#define AX_CMD_WRITE_MII_REG 0x08
#define AX_CMD_SET_HW_MII 0x0a
#define AX_CMD_READ_EEPROM 0x0b
#define AX_CMD_WRITE_EEPROM 0x0c
#define AX_CMD_WRITE_ENABLE 0x0d
#define AX_CMD_WRITE_DISABLE 0x0e
#define AX_CMD_READ_RX_CTL 0x0f
#define AX_CMD_WRITE_RX_CTL 0x10
#define AX_CMD_READ_IPG012 0x11
#define AX_CMD_WRITE_IPG0 0x12
#define AX_CMD_WRITE_IPG1 0x13
#define AX_CMD_READ_NODE_ID 0x13
#define AX_CMD_WRITE_NODE_ID 0x14
#define AX_CMD_WRITE_IPG2 0x14
#define AX_CMD_WRITE_MULTI_FILTER 0x16
#define AX88172_CMD_READ_NODE_ID 0x17
#define AX_CMD_READ_PHY_ID 0x19
#define AX_CMD_READ_MEDIUM_STATUS 0x1a
#define AX_CMD_WRITE_MEDIUM_MODE 0x1b
#define AX_CMD_READ_MONITOR_MODE 0x1c
#define AX_CMD_WRITE_MONITOR_MODE 0x1d
#define AX_CMD_READ_GPIOS 0x1e
#define AX_CMD_WRITE_GPIOS 0x1f
#define AX_CMD_SW_RESET 0x20
#define AX_CMD_SW_PHY_STATUS 0x21
#define AX_CMD_SW_PHY_SELECT 0x22
#define AX_MONITOR_MODE 0x01
#define AX_MONITOR_LINK 0x02
#define AX_MONITOR_MAGIC 0x04
#define AX_MONITOR_HSFS 0x10
/* AX88172 Medium Status Register values */
#define AX88172_MEDIUM_FD 0x02
#define AX88172_MEDIUM_TX 0x04
#define AX88172_MEDIUM_FC 0x10
#define AX88172_MEDIUM_DEFAULT \
( AX88172_MEDIUM_FD | AX88172_MEDIUM_TX | AX88172_MEDIUM_FC )
#define AX_MCAST_FILTER_SIZE 8
#define AX_MAX_MCAST 64
#define AX_SWRESET_CLEAR 0x00
#define AX_SWRESET_RR 0x01
#define AX_SWRESET_RT 0x02
#define AX_SWRESET_PRTE 0x04
#define AX_SWRESET_PRL 0x08
#define AX_SWRESET_BZ 0x10
#define AX_SWRESET_IPRL 0x20
#define AX_SWRESET_IPPD 0x40
#define AX88772_IPG0_DEFAULT 0x15
#define AX88772_IPG1_DEFAULT 0x0c
#define AX88772_IPG2_DEFAULT 0x12
/* AX88772 & AX88178 Medium Mode Register */
#define AX_MEDIUM_PF 0x0080
#define AX_MEDIUM_JFE 0x0040
#define AX_MEDIUM_TFC 0x0020
#define AX_MEDIUM_RFC 0x0010
#define AX_MEDIUM_ENCK 0x0008
#define AX_MEDIUM_AC 0x0004
#define AX_MEDIUM_FD 0x0002
#define AX_MEDIUM_GM 0x0001
#define AX_MEDIUM_SM 0x1000
#define AX_MEDIUM_SBP 0x0800
#define AX_MEDIUM_PS 0x0200
#define AX_MEDIUM_RE 0x0100
#define AX88178_MEDIUM_DEFAULT \
(AX_MEDIUM_PS | AX_MEDIUM_FD | AX_MEDIUM_AC | \
AX_MEDIUM_RFC | AX_MEDIUM_TFC | AX_MEDIUM_JFE | \
AX_MEDIUM_RE)
#define AX88772_MEDIUM_DEFAULT \
(AX_MEDIUM_FD | AX_MEDIUM_RFC | \
AX_MEDIUM_TFC | AX_MEDIUM_PS | \
AX_MEDIUM_AC | AX_MEDIUM_RE)
/* AX88772 & AX88178 RX_CTL values */
#define AX_RX_CTL_SO 0x0080
#define AX_RX_CTL_AP 0x0020
#define AX_RX_CTL_AM 0x0010
#define AX_RX_CTL_AB 0x0008
#define AX_RX_CTL_SEP 0x0004
#define AX_RX_CTL_AMALL 0x0002
#define AX_RX_CTL_PRO 0x0001
#define AX_RX_CTL_MFB_2048 0x0000
#define AX_RX_CTL_MFB_4096 0x0100
#define AX_RX_CTL_MFB_8192 0x0200
#define AX_RX_CTL_MFB_16384 0x0300
#define AX_DEFAULT_RX_CTL (AX_RX_CTL_SO | AX_RX_CTL_AB)
/* GPIO 0 .. 2 toggles */
#define AX_GPIO_GPO0EN 0x01 /* GPIO0 Output enable */
#define AX_GPIO_GPO_0 0x02 /* GPIO0 Output value */
#define AX_GPIO_GPO1EN 0x04 /* GPIO1 Output enable */
#define AX_GPIO_GPO_1 0x08 /* GPIO1 Output value */
#define AX_GPIO_GPO2EN 0x10 /* GPIO2 Output enable */
#define AX_GPIO_GPO_2 0x20 /* GPIO2 Output value */
#define AX_GPIO_RESERVED 0x40 /* Reserved */
#define AX_GPIO_RSE 0x80 /* Reload serial EEPROM */
#define AX_EEPROM_MAGIC 0xdeadbeef
#define AX88172_EEPROM_LEN 0x40
#define AX88772_EEPROM_LEN 0xff
#include "asix.h"
#define PHY_MODE_MARVELL 0x0000
#define MII_MARVELL_LED_CTRL 0x0018
@ -166,15 +36,6 @@
#define PHY_MODE_RTL8211CL 0x000C
/* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
struct asix_data {
u8 multi_filter[AX_MCAST_FILTER_SIZE];
u8 mac_addr[ETH_ALEN];
u8 phymode;
u8 ledmode;
u8 eeprom_len;
};
struct ax88172_int_data {
__le16 res1;
u8 link;
@ -183,225 +44,6 @@ struct ax88172_int_data {
__le16 res3;
} __packed;
static int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
u16 size, void *data)
{
void *buf;
int err = -ENOMEM;
netdev_dbg(dev->net, "asix_read_cmd() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
cmd, value, index, size);
buf = kmalloc(size, GFP_KERNEL);
if (!buf)
goto out;
err = usb_control_msg(
dev->udev,
usb_rcvctrlpipe(dev->udev, 0),
cmd,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
index,
buf,
size,
USB_CTRL_GET_TIMEOUT);
if (err == size)
memcpy(data, buf, size);
else if (err >= 0)
err = -EINVAL;
kfree(buf);
out:
return err;
}
static int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
u16 size, void *data)
{
void *buf = NULL;
int err = -ENOMEM;
netdev_dbg(dev->net, "asix_write_cmd() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
cmd, value, index, size);
if (data) {
buf = kmemdup(data, size, GFP_KERNEL);
if (!buf)
goto out;
}
err = usb_control_msg(
dev->udev,
usb_sndctrlpipe(dev->udev, 0),
cmd,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value,
index,
buf,
size,
USB_CTRL_SET_TIMEOUT);
kfree(buf);
out:
return err;
}
static void asix_async_cmd_callback(struct urb *urb)
{
struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
int status = urb->status;
if (status < 0)
printk(KERN_DEBUG "asix_async_cmd_callback() failed with %d",
status);
kfree(req);
usb_free_urb(urb);
}
static void
asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
u16 size, void *data)
{
struct usb_ctrlrequest *req;
int status;
struct urb *urb;
netdev_dbg(dev->net, "asix_write_cmd_async() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
cmd, value, index, size);
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb) {
netdev_err(dev->net, "Error allocating URB in write_cmd_async!\n");
return;
}
req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
if (!req) {
netdev_err(dev->net, "Failed to allocate memory for control request\n");
usb_free_urb(urb);
return;
}
req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
req->bRequest = cmd;
req->wValue = cpu_to_le16(value);
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,
asix_async_cmd_callback, req);
status = usb_submit_urb(urb, GFP_ATOMIC);
if (status < 0) {
netdev_err(dev->net, "Error submitting the control message: status=%d\n",
status);
kfree(req);
usb_free_urb(urb);
}
}
static int asix_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
{
int offset = 0;
while (offset + sizeof(u32) < skb->len) {
struct sk_buff *ax_skb;
u16 size;
u32 header = get_unaligned_le32(skb->data + offset);
offset += sizeof(u32);
/* get the packet length */
size = (u16) (header & 0x7ff);
if (size != ((~header >> 16) & 0x07ff)) {
netdev_err(dev->net, "asix_rx_fixup() Bad Header Length\n");
return 0;
}
if ((size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) ||
(size + offset > skb->len)) {
netdev_err(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
size);
return 0;
}
ax_skb = netdev_alloc_skb_ip_align(dev->net, size);
if (!ax_skb)
return 0;
skb_put(ax_skb, size);
memcpy(ax_skb->data, skb->data + offset, size);
usbnet_skb_return(dev, ax_skb);
offset += (size + 1) & 0xfffe;
}
if (skb->len != offset) {
netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d\n",
skb->len);
return 0;
}
return 1;
}
static struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
gfp_t flags)
{
int padlen;
int headroom = skb_headroom(skb);
int tailroom = skb_tailroom(skb);
u32 packet_len;
u32 padbytes = 0xffff0000;
padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
/* We need to push 4 bytes in front of frame (packet_len)
* and maybe add 4 bytes after the end (if padlen is 4)
*
* Avoid skb_copy_expand() expensive call, using following rules :
* - We are allowed to push 4 bytes in headroom if skb_header_cloned()
* is false (and if we have 4 bytes of headroom)
* - We are allowed to put 4 bytes at tail if skb_cloned()
* is false (and if we have 4 bytes of tailroom)
*
* TCP packets for example are cloned, but skb_header_release()
* was called in tcp stack, allowing us to use headroom for our needs.
*/
if (!skb_header_cloned(skb) &&
!(padlen && skb_cloned(skb)) &&
headroom + tailroom >= 4 + padlen) {
/* following should not happen, but better be safe */
if (headroom < 4 ||
tailroom < padlen) {
skb->data = memmove(skb->head + 4, skb->data, skb->len);
skb_set_tail_pointer(skb, skb->len);
}
} else {
struct sk_buff *skb2;
skb2 = skb_copy_expand(skb, 4, padlen, flags);
dev_kfree_skb_any(skb);
skb = skb2;
if (!skb)
return NULL;
}
packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
skb_push(skb, 4);
cpu_to_le32s(&packet_len);
skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
if (padlen) {
cpu_to_le32s(&padbytes);
memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
skb_put(skb, sizeof(padbytes));
}
return skb;
}
static void asix_status(struct usbnet *dev, struct urb *urb)
{
struct ax88172_int_data *event;
@ -422,200 +64,6 @@ static void asix_status(struct usbnet *dev, struct urb *urb)
}
}
static inline int asix_set_sw_mii(struct usbnet *dev)
{
int ret;
ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
if (ret < 0)
netdev_err(dev->net, "Failed to enable software MII access\n");
return ret;
}
static inline int asix_set_hw_mii(struct usbnet *dev)
{
int ret;
ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
if (ret < 0)
netdev_err(dev->net, "Failed to enable hardware MII access\n");
return ret;
}
static inline int asix_get_phy_addr(struct usbnet *dev)
{
u8 buf[2];
int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf);
netdev_dbg(dev->net, "asix_get_phy_addr()\n");
if (ret < 0) {
netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
goto out;
}
netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
*((__le16 *)buf));
ret = buf[1];
out:
return ret;
}
static int asix_sw_reset(struct usbnet *dev, u8 flags)
{
int ret;
ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
if (ret < 0)
netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
return ret;
}
static u16 asix_read_rx_ctl(struct usbnet *dev)
{
__le16 v;
int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v);
if (ret < 0) {
netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
goto out;
}
ret = le16_to_cpu(v);
out:
return ret;
}
static int asix_write_rx_ctl(struct usbnet *dev, u16 mode)
{
int ret;
netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
if (ret < 0)
netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
mode, ret);
return ret;
}
static u16 asix_read_medium_status(struct usbnet *dev)
{
__le16 v;
int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
if (ret < 0) {
netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
ret);
return ret; /* TODO: callers not checking for error ret */
}
return le16_to_cpu(v);
}
static int asix_write_medium_mode(struct usbnet *dev, u16 mode)
{
int ret;
netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
if (ret < 0)
netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
mode, ret);
return ret;
}
static int asix_write_gpio(struct usbnet *dev, u16 value, int sleep)
{
int ret;
netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL);
if (ret < 0)
netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
value, ret);
if (sleep)
msleep(sleep);
return ret;
}
/*
* AX88772 & AX88178 have a 16-bit RX_CTL value
*/
static void asix_set_multicast(struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
struct asix_data *data = (struct asix_data *)&dev->data;
u16 rx_ctl = AX_DEFAULT_RX_CTL;
if (net->flags & IFF_PROMISC) {
rx_ctl |= AX_RX_CTL_PRO;
} else if (net->flags & IFF_ALLMULTI ||
netdev_mc_count(net) > AX_MAX_MCAST) {
rx_ctl |= AX_RX_CTL_AMALL;
} else if (netdev_mc_empty(net)) {
/* 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 netdev_hw_addr *ha;
u32 crc_bits;
memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
/* Build the multicast hash filter. */
netdev_for_each_mc_addr(ha, net) {
crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
data->multi_filter[crc_bits >> 3] |=
1 << (crc_bits & 7);
}
asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
AX_MCAST_FILTER_SIZE, data->multi_filter);
rx_ctl |= AX_RX_CTL_AM;
}
asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
}
static int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
{
struct usbnet *dev = netdev_priv(netdev);
__le16 res;
mutex_lock(&dev->phy_mutex);
asix_set_sw_mii(dev);
asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
(__u16)loc, 2, &res);
asix_set_hw_mii(dev);
mutex_unlock(&dev->phy_mutex);
netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
phy_id, loc, le16_to_cpu(res));
return le16_to_cpu(res);
}
static void
asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
{
struct usbnet *dev = netdev_priv(netdev);
__le16 res = cpu_to_le16(val);
netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
phy_id, loc, val);
mutex_lock(&dev->phy_mutex);
asix_set_sw_mii(dev);
asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
asix_set_hw_mii(dev);
mutex_unlock(&dev->phy_mutex);
}
/* Get the PHY Identifier from the PHYSID1 & PHYSID2 MII registers */
static u32 asix_get_phyid(struct usbnet *dev)
{
@ -645,88 +93,6 @@ static u32 asix_get_phyid(struct usbnet *dev)
return phy_id;
}
static void
asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
{
struct usbnet *dev = netdev_priv(net);
u8 opt;
if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
wolinfo->supported = 0;
wolinfo->wolopts = 0;
return;
}
wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
wolinfo->wolopts = 0;
if (opt & AX_MONITOR_LINK)
wolinfo->wolopts |= WAKE_PHY;
if (opt & AX_MONITOR_MAGIC)
wolinfo->wolopts |= WAKE_MAGIC;
}
static int
asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
{
struct usbnet *dev = netdev_priv(net);
u8 opt = 0;
if (wolinfo->wolopts & WAKE_PHY)
opt |= AX_MONITOR_LINK;
if (wolinfo->wolopts & WAKE_MAGIC)
opt |= AX_MONITOR_MAGIC;
if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
opt, 0, 0, NULL) < 0)
return -EINVAL;
return 0;
}
static int asix_get_eeprom_len(struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
struct asix_data *data = (struct asix_data *)&dev->data;
return data->eeprom_len;
}
static int asix_get_eeprom(struct net_device *net,
struct ethtool_eeprom *eeprom, u8 *data)
{
struct usbnet *dev = netdev_priv(net);
__le16 *ebuf = (__le16 *)data;
int i;
/* Crude hack to ensure that we don't overwrite memory
* if an odd length is supplied
*/
if (eeprom->len % 2)
return -EINVAL;
eeprom->magic = AX_EEPROM_MAGIC;
/* ax8817x returns 2 bytes from eeprom on read */
for (i=0; i < eeprom->len / 2; i++) {
if (asix_read_cmd(dev, AX_CMD_READ_EEPROM,
eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
return -EINVAL;
}
return 0;
}
static void asix_get_drvinfo (struct net_device *net,
struct ethtool_drvinfo *info)
{
struct usbnet *dev = netdev_priv(net);
struct asix_data *data = (struct asix_data *)&dev->data;
/* Inherit standard device info */
usbnet_get_drvinfo(net, info);
strncpy (info->driver, DRIVER_NAME, sizeof info->driver);
strncpy (info->version, DRIVER_VERSION, sizeof info->version);
info->eedump_len = data->eeprom_len;
}
static u32 asix_get_link(struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
@ -741,30 +107,6 @@ static int asix_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
}
static int asix_set_mac_address(struct net_device *net, void *p)
{
struct usbnet *dev = netdev_priv(net);
struct asix_data *data = (struct asix_data *)&dev->data;
struct sockaddr *addr = p;
if (netif_running(net))
return -EBUSY;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
/* We use the 20 byte dev->data
* for our 6 byte mac buffer
* to avoid allocating memory that
* is tricky to free later */
memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
data->mac_addr);
return 0;
}
/* We need to override some ethtool_ops so we require our
own structure so we don't interfere with other usbnet
devices that may be connected at the same time. */