ChangeSet 1.2020.1.31, 2005/03/07 22:51:55-08:00, [EMAIL PROTECTED]
[PATCH] USB: Add ASIX AX88772 10/100 Ethernet support to usbnet
* Add support for the ASIX AX88772 10/100 Ethernet chip
* Fix ax8817x_bind to use allocated buffer to avoid DMA on the stack
* Fix ax8817x_bind error handling to ensure all resources are freed on failure
* Fix ax8817x_get_eeprom routines to return valid eeprom data
Signed-off-by: David Hollis <[EMAIL PROTECTED]>
Acked-by: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
drivers/usb/net/Kconfig | 4
drivers/usb/net/usbnet.c | 406 +++++++++++++++++++++++++++++++++++++++++++----
2 files changed, 380 insertions(+), 30 deletions(-)
diff -Nru a/drivers/usb/net/Kconfig b/drivers/usb/net/Kconfig
--- a/drivers/usb/net/Kconfig 2005-03-08 16:53:26 -08:00
+++ b/drivers/usb/net/Kconfig 2005-03-08 16:53:26 -08:00
@@ -260,13 +260,13 @@
depends on USB_USBNET
config USB_AX8817X
- boolean "ASIX AX88172 Based USB 2.0 Ethernet Devices"
+ boolean "ASIX AX88xxx Based USB 2.0 Ethernet Devices"
depends on USB_USBNET && NET_ETHERNET
select CRC32
select MII
default y
help
- This option adds support for ASIX AX88172 based USB 2.0
+ This option adds support for ASIX AX88xxx based USB 2.0
10/100 Ethernet devices.
This driver should work with at least the following devices:
diff -Nru a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
--- a/drivers/usb/net/usbnet.c 2005-03-08 16:53:26 -08:00
+++ b/drivers/usb/net/usbnet.c 2005-03-08 16:53:26 -08:00
@@ -2,7 +2,8 @@
* USB Networking Links
* Copyright (C) 2000-2003 by David Brownell <[EMAIL PROTECTED]>
* Copyright (C) 2002 Pavel Machek <[EMAIL PROTECTED]>
- * Copyright (C) 2003 David Hollis <[EMAIL PROTECTED]>
+ * Copyright (C) 2003-2005 David Hollis <[EMAIL PROTECTED]>
+ * Copyright (C) 2005 Phil Chang <[EMAIL PROTECTED]>
* Copyright (c) 2002-2003 TiVo Inc.
*
* This program is free software; you can redistribute it and/or modify
@@ -109,6 +110,7 @@
* (Neil Bortnak)
* 03-nov-2004 Trivial patch for KC2190 (KC-190) chip. (Jonathan McDowell)
*
+ * 01-feb-2005 AX88772 support (Phil Chang & Dave Hollis)
*-------------------------------------------------------------------------*/
// #define DEBUG // error path messages, extra info
@@ -222,6 +224,8 @@
#define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
#define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
+#define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */
+
/* init device ... can sleep, or cause probe() failure */
int (*bind)(struct usbnet *, struct usb_interface *);
@@ -435,6 +439,8 @@
#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_WRITE_RX_CTL 0x10
#define AX_CMD_READ_IPG012 0x11
#define AX_CMD_WRITE_IPG0 0x12
@@ -447,6 +453,10 @@
#define AX_CMD_READ_MONITOR_MODE 0x1c
#define AX_CMD_WRITE_MONITOR_MODE 0x1d
#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 AX88772_CMD_READ_NODE_ID 0x13
#define AX_MONITOR_MODE 0x01
#define AX_MONITOR_LINK 0x02
@@ -458,6 +468,23 @@
#define AX_INTERRUPT_BUFSIZE 8
+#define AX_EEPROM_LEN 0x40
+
+#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
+
+#define AX_EEPROM_MAGIC 0xdeadbeef
+
/* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
struct ax8817x_data {
u8 multi_filter[AX_MCAST_FILTER_SIZE];
@@ -514,18 +541,16 @@
int link;
if (urb->status < 0) {
- printk(KERN_DEBUG "ax8817x_interrupt_complete() failed with %d",
+ devdbg(dev,"ax8817x_interrupt_complete() failed with %d",
urb->status);
} else {
- if (data->int_buf[5] == 0x90) {
- link = data->int_buf[2] & 0x01;
- if (netif_carrier_ok(dev->net) != link) {
- if (link)
- netif_carrier_on(dev->net);
- else
- netif_carrier_off(dev->net);
- devdbg(dev, "ax8817x - Link Status is: %d",
link);
- }
+ link = data->int_buf[2] & 0x01;
+ if (netif_carrier_ok(dev->net) != link) {
+ if (link)
+ netif_carrier_on(dev->net);
+ else
+ netif_carrier_off(dev->net);
+ devdbg(dev, "ax8817x - Link Status is: %d", link);
}
usb_submit_urb(data->int_urb, GFP_ATOMIC);
}
@@ -674,6 +699,11 @@
return 0;
}
+static int ax8817x_get_eeprom_len(struct net_device *net)
+{
+ return AX_EEPROM_LEN;
+}
+
static int ax8817x_get_eeprom(struct net_device *net,
struct ethtool_eeprom *eeprom, u8 *data)
{
@@ -687,13 +717,15 @@
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 (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM,
eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
return -EINVAL;
}
- return i * 2;
+ return 0;
}
static void ax8817x_get_drvinfo (struct net_device *net,
@@ -728,6 +760,7 @@
.set_msglevel = usbnet_set_msglevel,
.get_wol = ax8817x_get_wol,
.set_wol = ax8817x_set_wol,
+ .get_eeprom_len = ax8817x_get_eeprom_len,
.get_eeprom = ax8817x_get_eeprom,
.get_settings = ax8817x_get_settings,
.set_settings = ax8817x_set_settings,
@@ -735,27 +768,26 @@
static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf)
{
- int ret;
- u8 buf[6];
+ int ret = 0;
+ void *buf;
int i;
unsigned long gpio_bits = dev->driver_info->data;
struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
- dev->in = usb_rcvbulkpipe(dev->udev, 3);
- dev->out = usb_sndbulkpipe(dev->udev, 2);
+ get_endpoints(dev,intf);
- // allocate irq urb
if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == NULL) {
dbg ("%s: cannot allocate interrupt URB",
dev->net->name);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto out1;
}
if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) ==
NULL) {
dbg ("%s: cannot allocate memory for interrupt buffer",
dev->net->name);
- usb_free_urb(data->int_urb);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto out1;
}
memset(data->int_buf, 0, AX_INTERRUPT_BUFSIZE);
@@ -765,36 +797,43 @@
ax8817x_interrupt_complete, dev,
dev->udev->speed == USB_SPEED_HIGH ? 8 : 100);
+ buf = kmalloc(ETH_ALEN, GFP_KERNEL);
+ if(!buf) {
+ ret = -ENOMEM;
+ goto out2;
+ }
+
/* Toggle the GPIOs in a manufacturer/model specific way */
for (i = 2; i >= 0; i--) {
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
(gpio_bits >> (i * 8)) & 0xff, 0, 0,
buf)) < 0)
- return ret;
+ goto out3;
msleep(5);
}
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x80, 0, 0,
buf)) < 0) {
dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret);
- return ret;
+ goto out3;
}
/* Get the MAC address */
memset(buf, 0, ETH_ALEN);
if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, 6, buf)) <
0) {
dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
- return ret;
+ goto out3;
}
memcpy(dev->net->dev_addr, buf, ETH_ALEN);
/* Get the PHY id */
if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) <
0) {
dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret);
- return ret;
+ goto out3;
} else if (ret < 2) {
/* this should always return 2 bytes */
dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
ret);
- return -EIO;
+ ret = -EIO;
+ goto out3;
}
/* Initialize MII structure */
@@ -803,7 +842,7 @@
dev->mii.mdio_write = ax8817x_mdio_write;
dev->mii.phy_id_mask = 0x3f;
dev->mii.reg_num_mask = 0x1f;
- dev->mii.phy_id = buf[1];
+ dev->mii.phy_id = *((u8 *)buf + 1);
dev->net->set_multicast_list = ax8817x_set_multicast;
dev->net->ethtool_ops = &ax8817x_ethtool_ops;
@@ -816,11 +855,17 @@
if((ret = usb_submit_urb(data->int_urb, GFP_KERNEL)) < 0) {
dbg("Failed to submit interrupt URB: %02x", ret);
- usb_free_urb(data->int_urb);
- return ret;
+ goto out2;
}
return 0;
+out3:
+ kfree(buf);
+out2:
+ kfree(data->int_buf);
+out1:
+ usb_free_urb(data->int_urb);
+ return ret;
}
static void ax8817x_unbind(struct usbnet *dev, struct usb_interface *intf)
@@ -832,6 +877,290 @@
kfree(data->int_buf);
}
+static struct ethtool_ops ax88772_ethtool_ops = {
+ .get_drvinfo = ax8817x_get_drvinfo,
+ .get_link = ethtool_op_get_link,
+ .get_msglevel = usbnet_get_msglevel,
+ .set_msglevel = usbnet_set_msglevel,
+ .get_wol = ax8817x_get_wol,
+ .set_wol = ax8817x_set_wol,
+ .get_eeprom_len = ax8817x_get_eeprom_len,
+ .get_eeprom = ax8817x_get_eeprom,
+ .get_settings = ax8817x_get_settings,
+ .set_settings = ax8817x_set_settings,
+};
+
+static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+ int ret;
+ void *buf;
+ struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
+
+ get_endpoints(dev,intf);
+
+ if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
+ dbg ("Cannot allocate interrupt URB");
+ ret = -ENOMEM;
+ goto out1;
+ }
+
+ if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) ==
NULL) {
+ dbg ("Cannot allocate memory for interrupt buffer");
+ ret = -ENOMEM;
+ goto out1;
+ }
+ memset(data->int_buf, 0, AX_INTERRUPT_BUFSIZE);
+
+ usb_fill_int_urb (data->int_urb, dev->udev,
+ usb_rcvintpipe (dev->udev, 1),
+ data->int_buf, AX_INTERRUPT_BUFSIZE,
+ ax8817x_interrupt_complete, dev,
+ dev->udev->speed == USB_SPEED_HIGH ? 8 : 100);
+
+ buf = kmalloc(6, GFP_KERNEL);
+ if(!buf) {
+ dbg ("Cannot allocate memory for buffer");
+ ret = -ENOMEM;
+ goto out2;
+ }
+
+ if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
+ 0x00B0, 0, 0, buf)) < 0)
+ goto out3;
+
+ msleep(5);
+ if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0x0001, 0, 0,
buf)) < 0) {
+ dbg("Select PHY #1 failed: %d", ret);
+ goto out3;
+ }
+
+ if ((ret =
+ ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD, 0, 0,
buf)) < 0) {
+ dbg("Failed to power down internal PHY: %d", ret);
+ goto out3;
+ }
+
+ msleep(150);
+ if ((ret =
+ ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR, 0, 0,
buf)) < 0) {
+ dbg("Failed to perform software reset: %d", ret);
+ goto out3;
+ }
+
+ msleep(150);
+ if ((ret =
+ ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL |
AX_SWRESET_PRL, 0, 0, buf)) < 0) {
+ dbg("Failed to set Internal/External PHY reset control: %d",
ret);
+ goto out3;
+ }
+
+ msleep(150);
+ if ((ret =
+ ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0000, 0, 0,
+ buf)) < 0) {
+ dbg("Failed to reset RX_CTL: %d", ret);
+ goto out3;
+ }
+
+ /* Get the MAC address */
+ memset(buf, 0, ETH_ALEN);
+ if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID, 0, 0,
ETH_ALEN, buf)) < 0) {
+ dbg("Failed to read MAC address: %d", ret);
+ goto out3;
+ }
+ memcpy(dev->net->dev_addr, buf, ETH_ALEN);
+
+ if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, buf)) <
0) {
+ dbg("Enabling software MII failed: %d", ret);
+ goto out3;
+ }
+
+ if (((ret =
+ ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, 0x0010, 2, 2, buf)) <
0)
+ || (*((u16 *)buf) != 0x003b)) {
+ dbg("Read PHY register 2 must be 0x3b00: %d", ret);
+ goto out3;
+ }
+
+ /* Initialize MII structure */
+ dev->mii.dev = dev->net;
+ dev->mii.mdio_read = ax8817x_mdio_read;
+ dev->mii.mdio_write = ax8817x_mdio_write;
+ dev->mii.phy_id_mask = 0xff;
+ dev->mii.reg_num_mask = 0xff;
+
+ /* Get the PHY id */
+ if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) <
0) {
+ dbg("Error reading PHY ID: %02x", ret);
+ goto out3;
+ } else if (ret < 2) {
+ /* this should always return 2 bytes */
+ dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
+ ret);
+ ret = -EIO;
+ goto out3;
+ }
+ dev->mii.phy_id = *((u8 *)buf + 1);
+
+ if ((ret =
+ ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL, 0, 0,
buf)) < 0) {
+ dbg("Set external PHY reset pin level: %d", ret);
+ goto out3;
+ }
+ msleep(150);
+ if ((ret =
+ ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL |
AX_SWRESET_PRL, 0, 0, buf)) < 0) {
+ dbg("Set Internal/External PHY reset control: %d", ret);
+ goto out3;
+ }
+ msleep(150);
+
+
+ dev->net->set_multicast_list = ax8817x_set_multicast;
+ dev->net->ethtool_ops = &ax88772_ethtool_ops;
+
+ ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
+ cpu_to_le16(BMCR_RESET));
+ ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
+ cpu_to_le16(ADVERTISE_ALL | ADVERTISE_CSMA));
+ mii_nway_restart(&dev->mii);
+
+ if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, 0x0336, 0,
0, buf)) < 0) {
+ dbg("Write medium mode register: %d", ret);
+ goto out3;
+ }
+
+ if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0,
AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,AX88772_IPG2_DEFAULT, 0, buf)) < 0)
{
+ dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
+ goto out3;
+ }
+ if ((ret =
+ ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) {
+ dbg("Failed to set hardware MII: %02x", ret);
+ goto out3;
+ }
+
+ /* Set RX_CTL to default values with 2k buffer, and enable cactus */
+ if ((ret =
+ ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0088, 0, 0,
+ buf)) < 0) {
+ dbg("Reset RX_CTL failed: %d", ret);
+ goto out3;
+ }
+
+ if((ret = usb_submit_urb(data->int_urb, GFP_KERNEL)) < 0) {
+ dbg("Failed to submit interrupt URB: %02x", ret);
+ goto out3;
+ }
+
+ kfree(buf);
+
+ return 0;
+
+out3:
+ kfree(buf);
+out2:
+ kfree(data->int_buf);
+out1:
+ usb_free_urb(data->int_urb);
+
+ return ret;
+}
+
+static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
+{
+ u32 *header;
+ char *packet;
+ struct sk_buff *ax_skb;
+ u16 size;
+
+ header = (u32 *) skb->data;
+ le32_to_cpus(header);
+ packet = (char *)(header + 1);
+
+ skb_pull(skb, 4);
+
+ while (skb->len > 0) {
+ if ((short)(*header & 0x0000ffff) !=
+ ~((short)((*header & 0xffff0000) >> 16))) {
+ devdbg(dev,"header length data is error");
+ }
+ /* get the packet length */
+ size = (u16) (*header & 0x0000ffff);
+
+ if ((skb->len) - ((size + 1) & 0xfffe) == 0)
+ return 2;
+ if (size > ETH_FRAME_LEN) {
+ devdbg(dev,"invalid rx length %d", size);
+ return 0;
+ }
+ ax_skb = skb_clone(skb, GFP_ATOMIC);
+ if (ax_skb) {
+ ax_skb->len = size;
+ ax_skb->data = packet;
+ ax_skb->tail = packet + size;
+ skb_return(dev, ax_skb);
+ } else {
+ return 0;
+ }
+
+ skb_pull(skb, (size + 1) & 0xfffe);
+
+ if (skb->len == 0)
+ break;
+
+ header = (u32 *) skb->data;
+ le32_to_cpus(header);
+ packet = (char *)(header + 1);
+ skb_pull(skb, 4);
+ }
+
+ if (skb->len < 0) {
+ devdbg(dev,"invalid rx length %d", skb->len);
+ return 0;
+ }
+ return 1;
+}
+
+static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff
*skb,
+ int flags)
+{
+ int padlen;
+ int headroom = skb_headroom(skb);
+ int tailroom = skb_tailroom(skb);
+ u32 *packet_len;
+ u32 *padbytes_ptr;
+
+ padlen = ((skb->len + 4) % 512) ? 0 : 4;
+
+ if ((!skb_cloned(skb))
+ && ((headroom + tailroom) >= (4 + padlen))) {
+ if ((headroom < 4) || (tailroom < padlen)) {
+ skb->data = memmove(skb->head + 4, skb->data, skb->len);
+ skb->tail = skb->data + 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 = (u32 *) skb_push(skb, 4);
+
+ packet_len = (u32 *) skb->data;
+ *packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
+
+ if ((skb->len % 512) == 0) {
+ padbytes_ptr = (u32 *) skb->tail;
+ *padbytes_ptr = 0xffff0000;
+ skb_put(skb, padlen);
+ }
+ return skb;
+}
+
static const struct driver_info ax8817x_info = {
.description = "ASIX AX8817x USB 2.0 Ethernet",
.bind = ax8817x_bind,
@@ -864,6 +1193,16 @@
.data = 0x001f1d1f,
};
+static const struct driver_info ax88772_info = {
+ .description = "ASIX AX88772 USB 2.0 Ethernet",
+ .bind = ax88772_bind,
+ .unbind = ax8817x_unbind,
+ .flags = FLAG_ETHER | FLAG_FRAMING_AX,
+ .rx_fixup = ax88772_rx_fixup,
+ .tx_fixup = ax88772_tx_fixup,
+ .data = 0x00130103,
+};
+
#endif /* CONFIG_USB_AX8817X */
@@ -2402,6 +2741,11 @@
size = RNDIS_MAX_TRANSFER;
else
#endif
+#ifdef CONFIG_USB_AX8817X
+ if (dev->driver_info->flags & FLAG_FRAMING_AX)
+ size = 2048;
+ else
+#endif
size = (sizeof (struct ethhdr) + dev->net->mtu);
if ((skb = alloc_skb (size, flags)) == NULL) {
@@ -2677,6 +3021,8 @@
framing = "Zaurus";
else if (dev->driver_info->flags & FLAG_FRAMING_RN)
framing = "RNDIS";
+ else if (dev->driver_info->flags & FLAG_FRAMING_AX)
+ framing = "ASIX";
else
framing = "simple";
@@ -3290,6 +3636,10 @@
// goodway corp usb gwusb2e
USB_DEVICE (0x1631, 0x6200),
.driver_info = (unsigned long) &ax8817x_info,
+}, {
+ // ASIX AX88772 10/100
+ USB_DEVICE (0x0b95, 0x7720),
+ .driver_info = (unsigned long) &ax88772_info,
},
#endif
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