aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/usb/dm9601.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/usb/dm9601.c')
-rw-r--r--drivers/net/usb/dm9601.c249
1 files changed, 105 insertions, 144 deletions
diff --git a/drivers/net/usb/dm9601.c b/drivers/net/usb/dm9601.c
index 02b622e3b9f..6e9c344c7a2 100644
--- a/drivers/net/usb/dm9601.c
+++ b/drivers/net/usb/dm9601.c
@@ -1,5 +1,5 @@
/*
- * Davicom DM9601 USB 1.1 10/100Mbps ethernet devices
+ * Davicom DM96xx USB 10/100Mbps ethernet devices
*
* Peter Korsgaard <jacmet@sunsite.dk>
*
@@ -13,7 +13,6 @@
#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>
@@ -45,6 +44,12 @@
#define DM_MCAST_ADDR 0x16 /* 8 bytes */
#define DM_GPR_CTRL 0x1e
#define DM_GPR_DATA 0x1f
+#define DM_CHIP_ID 0x2c
+#define DM_MODE_CTRL 0x91 /* only on dm9620 */
+
+/* chip id values */
+#define ID_DM9601 0
+#define ID_DM9620 1
#define DM_MAX_MCAST 64
#define DM_MCAST_SIZE 8
@@ -53,30 +58,14 @@
#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)
{
- void *buf;
- int err = -ENOMEM;
-
- netdev_dbg(dev->net, "dm_read() reg=0x%02x length=%d\n", reg, length);
-
- buf = kmalloc(length, GFP_KERNEL);
- if (!buf)
- goto out;
-
- err = usb_control_msg(dev->udev,
- usb_rcvctrlpipe(dev->udev, 0),
- DM_READ_REGS,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 0, reg, buf, length, USB_CTRL_SET_TIMEOUT);
- if (err == length)
- memcpy(data, buf, length);
- else if (err >= 0)
+ int err;
+ err = usbnet_read_cmd(dev, DM_READ_REGS,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, reg, data, length);
+ if(err != length && err >= 0)
err = -EINVAL;
- kfree(buf);
-
- out:
return err;
}
@@ -87,106 +76,35 @@ static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value)
static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data)
{
- void *buf = NULL;
- int err = -ENOMEM;
-
- netdev_dbg(dev->net, "dm_write() reg=0x%02x, length=%d\n", reg, length);
+ int err;
+ err = usbnet_write_cmd(dev, DM_WRITE_REGS,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, reg, data, length);
- if (data) {
- buf = kmemdup(data, length, GFP_KERNEL);
- if (!buf)
- goto out;
- }
-
- err = usb_control_msg(dev->udev,
- usb_sndctrlpipe(dev->udev, 0),
- DM_WRITE_REGS,
- USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE,
- 0, reg, buf, length, USB_CTRL_SET_TIMEOUT);
- kfree(buf);
if (err >= 0 && err < length)
err = -EINVAL;
- out:
return err;
}
static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value)
{
- netdev_dbg(dev->net, "dm_write_reg() reg=0x%02x, value=0x%02x\n",
- 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;
- int status = urb->status;
-
- if (status < 0)
- printk(KERN_DEBUG "dm_write_async_callback() failed with %d\n",
- status);
-
- kfree(req);
- usb_free_urb(urb);
-}
-
-static void dm_write_async_helper(struct usbnet *dev, u8 reg, u8 value,
- u16 length, void *data)
-{
- struct usb_ctrlrequest *req;
- struct urb *urb;
- int status;
-
- urb = usb_alloc_urb(0, GFP_ATOMIC);
- if (!urb) {
- netdev_err(dev->net, "Error allocating URB in dm_write_async_helper!\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 = length ? DM_WRITE_REGS : DM_WRITE_REG;
- req->wValue = cpu_to_le16(value);
- 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) {
- netdev_err(dev->net, "Error submitting the control message: status=%d\n",
- status);
- kfree(req);
- usb_free_urb(urb);
- }
+ return usbnet_write_cmd(dev, DM_WRITE_REG,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ value, reg, NULL, 0);
}
static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, void *data)
{
- netdev_dbg(dev->net, "dm_write_async() reg=0x%02x length=%d\n", reg, length);
-
- dm_write_async_helper(dev, reg, 0, length, data);
+ usbnet_write_cmd_async(dev, DM_WRITE_REGS,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, reg, data, length);
}
static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value)
{
- netdev_dbg(dev->net, "dm_write_reg_async() reg=0x%02x value=0x%02x\n",
- reg, value);
-
- dm_write_async_helper(dev, reg, value, 0, NULL);
+ usbnet_write_cmd_async(dev, DM_WRITE_REG,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ value, reg, NULL, 0);
}
static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 *value)
@@ -199,7 +117,7 @@ static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 *valu
dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4);
for (i = 0; i < DM_TIMEOUT; i++) {
- u8 tmp;
+ u8 tmp = 0;
udelay(1);
ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
@@ -242,7 +160,7 @@ static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 valu
dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1a : 0x12);
for (i = 0; i < DM_TIMEOUT; i++) {
- u8 tmp;
+ u8 tmp = 0;
udelay(1);
ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
@@ -384,7 +302,7 @@ static void dm9601_set_multicast(struct net_device *net)
rx_ctl |= 0x02;
} else if (net->flags & IFF_ALLMULTI ||
netdev_mc_count(net) > DM_MAX_MCAST) {
- rx_ctl |= 0x04;
+ rx_ctl |= 0x08;
} else if (!netdev_mc_empty(net)) {
struct netdev_hw_addr *ha;
@@ -428,14 +346,14 @@ static const struct net_device_ops dm9601_netdev_ops = {
.ndo_change_mtu = usbnet_change_mtu,
.ndo_validate_addr = eth_validate_addr,
.ndo_do_ioctl = dm9601_ioctl,
- .ndo_set_multicast_list = dm9601_set_multicast,
+ .ndo_set_rx_mode = dm9601_set_multicast,
.ndo_set_mac_address = dm9601_set_mac_address,
};
static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
{
int ret;
- u8 mac[ETH_ALEN];
+ u8 mac[ETH_ALEN], id;
ret = usbnet_get_endpoints(dev, intf);
if (ret)
@@ -445,7 +363,12 @@ static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
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 + ETH_HLEN + DM_RX_OVERHEAD;
+
+ /* dm9620/21a require room for 4 byte padding, even in dm9601
+ * mode, so we need +1 to be able to receive full size
+ * ethernet frames.
+ */
+ dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD + 1;
dev->mii.dev = dev->net;
dev->mii.mdio_read = dm9601_mdio_read;
@@ -476,6 +399,24 @@ static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
__dm9601_set_mac_address(dev);
}
+ if (dm_read_reg(dev, DM_CHIP_ID, &id) < 0) {
+ netdev_err(dev->net, "Error reading chip ID\n");
+ ret = -ENODEV;
+ goto out;
+ }
+
+ /* put dm9620 devices in dm9601 mode */
+ if (id == ID_DM9620) {
+ u8 mode;
+
+ if (dm_read_reg(dev, DM_MODE_CTRL, &mode) < 0) {
+ netdev_err(dev->net, "Error reading MODE_CTRL\n");
+ ret = -ENODEV;
+ goto out;
+ }
+ dm_write_reg(dev, DM_MODE_CTRL, mode & 0x7f);
+ }
+
/* power up phy */
dm_write_reg(dev, DM_GPR_CTRL, 1);
dm_write_reg(dev, DM_GPR_DATA, 0);
@@ -531,7 +472,7 @@ static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
gfp_t flags)
{
- int len;
+ int len, pad;
/* format:
b1: packet length low
@@ -539,12 +480,23 @@ static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
b3..n: packet data
*/
- len = skb->len;
+ len = skb->len + DM_TX_OVERHEAD;
+
+ /* workaround for dm962x errata with tx fifo getting out of
+ * sync if a USB bulk transfer retry happens right after a
+ * packet with odd / maxpacket length by adding up to 3 bytes
+ * padding.
+ */
+ while ((len & 1) || !(len % dev->maxpacket))
+ len++;
+
+ len -= DM_TX_OVERHEAD; /* hw header doesn't count as part of length */
+ pad = len - skb->len;
- if (skb_headroom(skb) < DM_TX_OVERHEAD) {
+ if (skb_headroom(skb) < DM_TX_OVERHEAD || skb_tailroom(skb) < pad) {
struct sk_buff *skb2;
- skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, 0, flags);
+ skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, pad, flags);
dev_kfree_skb_any(skb);
skb = skb2;
if (!skb)
@@ -553,10 +505,10 @@ static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
__skb_push(skb, DM_TX_OVERHEAD);
- /* usbnet adds padding if length is a multiple of packet size
- if so, adjust length value in header */
- if ((skb->len % dev->maxpacket) == 0)
- len++;
+ if (pad) {
+ memset(skb->data + skb->len, 0, pad);
+ __skb_put(skb, pad);
+ }
skb->data[0] = len;
skb->data[1] = len >> 8;
@@ -587,31 +539,26 @@ static void dm9601_status(struct usbnet *dev, struct urb *urb)
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);
+ usbnet_link_change(dev, link, 1);
netdev_dbg(dev->net, "Link Status is: %d\n", link);
}
}
static int dm9601_link_reset(struct usbnet *dev)
{
- struct ethtool_cmd ecmd;
+ struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
mii_check_media(&dev->mii, 1, 1);
mii_ethtool_gset(&dev->mii, &ecmd);
- netdev_dbg(dev->net, "link_reset() speed: %d duplex: %d\n",
- ecmd.speed, ecmd.duplex);
+ netdev_dbg(dev->net, "link_reset() speed: %u duplex: %d\n",
+ ethtool_cmd_speed(&ecmd), ecmd.duplex);
return 0;
}
static const struct driver_info dm9601_info = {
- .description = "Davicom DM9601 USB Ethernet",
+ .description = "Davicom DM96xx USB 10/100 Ethernet",
.flags = FLAG_ETHER | FLAG_LINK_INTR,
.bind = dm9601_bind,
.rx_fixup = dm9601_rx_fixup,
@@ -651,9 +598,33 @@ static const struct usb_device_id products[] = {
.driver_info = (unsigned long)&dm9601_info,
},
{
+ USB_DEVICE(0x0fe6, 0x9700), /* DM9601 USB to Fast Ethernet Adapter */
+ .driver_info = (unsigned long)&dm9601_info,
+ },
+ {
USB_DEVICE(0x0a46, 0x9000), /* DM9000E */
.driver_info = (unsigned long)&dm9601_info,
},
+ {
+ USB_DEVICE(0x0a46, 0x9620), /* DM9620 USB to Fast Ethernet Adapter */
+ .driver_info = (unsigned long)&dm9601_info,
+ },
+ {
+ USB_DEVICE(0x0a46, 0x9621), /* DM9621A USB to Fast Ethernet Adapter */
+ .driver_info = (unsigned long)&dm9601_info,
+ },
+ {
+ USB_DEVICE(0x0a46, 0x9622), /* DM9622 USB to Fast Ethernet Adapter */
+ .driver_info = (unsigned long)&dm9601_info,
+ },
+ {
+ USB_DEVICE(0x0a46, 0x0269), /* DM962OA USB to Fast Ethernet Adapter */
+ .driver_info = (unsigned long)&dm9601_info,
+ },
+ {
+ USB_DEVICE(0x0a46, 0x1269), /* DM9621A USB to Fast Ethernet Adapter */
+ .driver_info = (unsigned long)&dm9601_info,
+ },
{}, // END
};
@@ -666,21 +637,11 @@ static struct usb_driver dm9601_driver = {
.disconnect = usbnet_disconnect,
.suspend = usbnet_suspend,
.resume = usbnet_resume,
+ .disable_hub_initiated_lpm = 1,
};
-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_usb_driver(dm9601_driver);
MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>");
-MODULE_DESCRIPTION("Davicom DM9601 USB 1.1 ethernet devices");
+MODULE_DESCRIPTION("Davicom DM96xx USB 10/100 ethernet devices");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-03 18:26:06 +0000