| /* |
| * Copyright (c) 1999-2005 Petko Manolov (petkan@users.sourceforge.net) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * ChangeLog: |
| * .... Most of the time spent on reading sources & docs. |
| * v0.2.x First official release for the Linux kernel. |
| * v0.3.0 Beutified and structured, some bugs fixed. |
| * v0.3.x URBifying bulk requests and bugfixing. First relatively |
| * stable release. Still can touch device's registers only |
| * from top-halves. |
| * v0.4.0 Control messages remained unurbified are now URBs. |
| * Now we can touch the HW at any time. |
| * v0.4.9 Control urbs again use process context to wait. Argh... |
| * Some long standing bugs (enable_net_traffic) fixed. |
| * Also nasty trick about resubmiting control urb from |
| * interrupt context used. Please let me know how it |
| * behaves. Pegasus II support added since this version. |
| * TODO: suppressing HCD warnings spewage on disconnect. |
| * v0.4.13 Ethernet address is now set at probe(), not at open() |
| * time as this seems to break dhcpd. |
| * v0.5.0 branch to 2.5.x kernels |
| * v0.5.1 ethtool support added |
| * v0.5.5 rx socket buffers are in a pool and the their allocation |
| * is out of the interrupt routine. |
| */ |
| |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/ethtool.h> |
| #include <linux/mii.h> |
| #include <linux/usb.h> |
| #include <linux/module.h> |
| #include <asm/byteorder.h> |
| #include <asm/uaccess.h> |
| #include "pegasus.h" |
| |
| /* |
| * Version Information |
| */ |
| #define DRIVER_VERSION "v0.6.13 (2005/11/13)" |
| #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>" |
| #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver" |
| |
| static const char driver_name[] = "pegasus"; |
| |
| #undef PEGASUS_WRITE_EEPROM |
| #define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \ |
| BMSR_100FULL | BMSR_ANEGCAPABLE) |
| |
| static int loopback = 0; |
| static int mii_mode = 0; |
| static char *devid=NULL; |
| |
| static struct usb_eth_dev usb_dev_id[] = { |
| #define PEGASUS_DEV(pn, vid, pid, flags) \ |
| {.name = pn, .vendor = vid, .device = pid, .private = flags}, |
| #include "pegasus.h" |
| #undef PEGASUS_DEV |
| {NULL, 0, 0, 0}, |
| {NULL, 0, 0, 0} |
| }; |
| |
| static struct usb_device_id pegasus_ids[] = { |
| #define PEGASUS_DEV(pn, vid, pid, flags) \ |
| {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid}, |
| #include "pegasus.h" |
| #undef PEGASUS_DEV |
| {}, |
| {} |
| }; |
| |
| MODULE_AUTHOR(DRIVER_AUTHOR); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |
| module_param(loopback, bool, 0); |
| module_param(mii_mode, bool, 0); |
| module_param(devid, charp, 0); |
| MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)"); |
| MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0"); |
| MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'"); |
| |
| /* use ethtool to change the level for any given device */ |
| static int msg_level = -1; |
| module_param (msg_level, int, 0); |
| MODULE_PARM_DESC (msg_level, "Override default message level"); |
| |
| MODULE_DEVICE_TABLE(usb, pegasus_ids); |
| |
| static int update_eth_regs_async(pegasus_t *); |
| /* Aargh!!! I _really_ hate such tweaks */ |
| static void ctrl_callback(struct urb *urb, struct pt_regs *regs) |
| { |
| pegasus_t *pegasus = urb->context; |
| |
| if (!pegasus) |
| return; |
| |
| switch (urb->status) { |
| case 0: |
| if (pegasus->flags & ETH_REGS_CHANGE) { |
| pegasus->flags &= ~ETH_REGS_CHANGE; |
| pegasus->flags |= ETH_REGS_CHANGED; |
| update_eth_regs_async(pegasus); |
| return; |
| } |
| break; |
| case -EINPROGRESS: |
| return; |
| case -ENOENT: |
| break; |
| default: |
| if (netif_msg_drv(pegasus)) |
| dev_dbg(&pegasus->intf->dev, "%s, status %d\n", |
| __FUNCTION__, urb->status); |
| } |
| pegasus->flags &= ~ETH_REGS_CHANGED; |
| wake_up(&pegasus->ctrl_wait); |
| } |
| |
| static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size, |
| void *data) |
| { |
| int ret; |
| char *buffer; |
| DECLARE_WAITQUEUE(wait, current); |
| |
| buffer = kmalloc(size, GFP_KERNEL); |
| if (!buffer) { |
| if (netif_msg_drv(pegasus)) |
| dev_warn(&pegasus->intf->dev, "out of memory in %s\n", |
| __FUNCTION__); |
| return -ENOMEM; |
| } |
| add_wait_queue(&pegasus->ctrl_wait, &wait); |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| while (pegasus->flags & ETH_REGS_CHANGED) |
| schedule(); |
| remove_wait_queue(&pegasus->ctrl_wait, &wait); |
| set_current_state(TASK_RUNNING); |
| |
| pegasus->dr.bRequestType = PEGASUS_REQT_READ; |
| pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS; |
| pegasus->dr.wValue = cpu_to_le16(0); |
| pegasus->dr.wIndex = cpu_to_le16p(&indx); |
| pegasus->dr.wLength = cpu_to_le16p(&size); |
| pegasus->ctrl_urb->transfer_buffer_length = size; |
| |
| usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, |
| usb_rcvctrlpipe(pegasus->usb, 0), |
| (char *) &pegasus->dr, |
| buffer, size, ctrl_callback, pegasus); |
| |
| add_wait_queue(&pegasus->ctrl_wait, &wait); |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| |
| /* using ATOMIC, we'd never wake up if we slept */ |
| if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { |
| if (ret == -ENODEV) |
| netif_device_detach(pegasus->net); |
| if (netif_msg_drv(pegasus)) |
| dev_err(&pegasus->intf->dev, "%s, status %d\n", |
| __FUNCTION__, ret); |
| goto out; |
| } |
| |
| schedule(); |
| out: |
| remove_wait_queue(&pegasus->ctrl_wait, &wait); |
| memcpy(data, buffer, size); |
| kfree(buffer); |
| |
| return ret; |
| } |
| |
| static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size, |
| void *data) |
| { |
| int ret; |
| char *buffer; |
| DECLARE_WAITQUEUE(wait, current); |
| |
| buffer = kmalloc(size, GFP_KERNEL); |
| if (!buffer) { |
| if (netif_msg_drv(pegasus)) |
| dev_warn(&pegasus->intf->dev, "out of memory in %s\n", |
| __FUNCTION__); |
| return -ENOMEM; |
| } |
| memcpy(buffer, data, size); |
| |
| add_wait_queue(&pegasus->ctrl_wait, &wait); |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| while (pegasus->flags & ETH_REGS_CHANGED) |
| schedule(); |
| remove_wait_queue(&pegasus->ctrl_wait, &wait); |
| set_current_state(TASK_RUNNING); |
| |
| pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; |
| pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; |
| pegasus->dr.wValue = cpu_to_le16(0); |
| pegasus->dr.wIndex = cpu_to_le16p(&indx); |
| pegasus->dr.wLength = cpu_to_le16p(&size); |
| pegasus->ctrl_urb->transfer_buffer_length = size; |
| |
| usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, |
| usb_sndctrlpipe(pegasus->usb, 0), |
| (char *) &pegasus->dr, |
| buffer, size, ctrl_callback, pegasus); |
| |
| add_wait_queue(&pegasus->ctrl_wait, &wait); |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| |
| if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { |
| if (ret == -ENODEV) |
| netif_device_detach(pegasus->net); |
| if (netif_msg_drv(pegasus)) |
| dev_err(&pegasus->intf->dev, "%s, status %d\n", |
| __FUNCTION__, ret); |
| goto out; |
| } |
| |
| schedule(); |
| out: |
| remove_wait_queue(&pegasus->ctrl_wait, &wait); |
| kfree(buffer); |
| |
| return ret; |
| } |
| |
| static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data) |
| { |
| int ret; |
| char *tmp; |
| DECLARE_WAITQUEUE(wait, current); |
| |
| tmp = kmalloc(1, GFP_KERNEL); |
| if (!tmp) { |
| if (netif_msg_drv(pegasus)) |
| dev_warn(&pegasus->intf->dev, "out of memory in %s\n", |
| __FUNCTION__); |
| return -ENOMEM; |
| } |
| memcpy(tmp, &data, 1); |
| add_wait_queue(&pegasus->ctrl_wait, &wait); |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| while (pegasus->flags & ETH_REGS_CHANGED) |
| schedule(); |
| remove_wait_queue(&pegasus->ctrl_wait, &wait); |
| set_current_state(TASK_RUNNING); |
| |
| pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; |
| pegasus->dr.bRequest = PEGASUS_REQ_SET_REG; |
| pegasus->dr.wValue = cpu_to_le16(data); |
| pegasus->dr.wIndex = cpu_to_le16p(&indx); |
| pegasus->dr.wLength = cpu_to_le16(1); |
| pegasus->ctrl_urb->transfer_buffer_length = 1; |
| |
| usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, |
| usb_sndctrlpipe(pegasus->usb, 0), |
| (char *) &pegasus->dr, |
| tmp, 1, ctrl_callback, pegasus); |
| |
| add_wait_queue(&pegasus->ctrl_wait, &wait); |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| |
| if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { |
| if (ret == -ENODEV) |
| netif_device_detach(pegasus->net); |
| if (netif_msg_drv(pegasus)) |
| dev_err(&pegasus->intf->dev, "%s, status %d\n", |
| __FUNCTION__, ret); |
| goto out; |
| } |
| |
| schedule(); |
| out: |
| remove_wait_queue(&pegasus->ctrl_wait, &wait); |
| kfree(tmp); |
| |
| return ret; |
| } |
| |
| static int update_eth_regs_async(pegasus_t * pegasus) |
| { |
| int ret; |
| |
| pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; |
| pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; |
| pegasus->dr.wValue = 0; |
| pegasus->dr.wIndex = cpu_to_le16(EthCtrl0); |
| pegasus->dr.wLength = cpu_to_le16(3); |
| pegasus->ctrl_urb->transfer_buffer_length = 3; |
| |
| usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, |
| usb_sndctrlpipe(pegasus->usb, 0), |
| (char *) &pegasus->dr, |
| pegasus->eth_regs, 3, ctrl_callback, pegasus); |
| |
| if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { |
| if (ret == -ENODEV) |
| netif_device_detach(pegasus->net); |
| if (netif_msg_drv(pegasus)) |
| dev_err(&pegasus->intf->dev, "%s, status %d\n", |
| __FUNCTION__, ret); |
| } |
| |
| return ret; |
| } |
| |
| static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd) |
| { |
| int i; |
| __u8 data[4] = { phy, 0, 0, indx }; |
| __le16 regdi; |
| int ret; |
| |
| set_register(pegasus, PhyCtrl, 0); |
| set_registers(pegasus, PhyAddr, sizeof (data), data); |
| set_register(pegasus, PhyCtrl, (indx | PHY_READ)); |
| for (i = 0; i < REG_TIMEOUT; i++) { |
| ret = get_registers(pegasus, PhyCtrl, 1, data); |
| if (ret == -ESHUTDOWN) |
| goto fail; |
| if (data[0] & PHY_DONE) |
| break; |
| } |
| if (i < REG_TIMEOUT) { |
| ret = get_registers(pegasus, PhyData, 2, ®di); |
| *regd = le16_to_cpu(regdi); |
| return ret; |
| } |
| fail: |
| if (netif_msg_drv(pegasus)) |
| dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__); |
| |
| return ret; |
| } |
| |
| static int mdio_read(struct net_device *dev, int phy_id, int loc) |
| { |
| pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev); |
| u16 res; |
| |
| read_mii_word(pegasus, phy_id, loc, &res); |
| return (int)res; |
| } |
| |
| static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd) |
| { |
| int i; |
| __u8 data[4] = { phy, 0, 0, indx }; |
| int ret; |
| |
| data[1] = (u8) regd; |
| data[2] = (u8) (regd >> 8); |
| set_register(pegasus, PhyCtrl, 0); |
| set_registers(pegasus, PhyAddr, sizeof(data), data); |
| set_register(pegasus, PhyCtrl, (indx | PHY_WRITE)); |
| for (i = 0; i < REG_TIMEOUT; i++) { |
| ret = get_registers(pegasus, PhyCtrl, 1, data); |
| if (ret == -ESHUTDOWN) |
| goto fail; |
| if (data[0] & PHY_DONE) |
| break; |
| } |
| if (i < REG_TIMEOUT) |
| return ret; |
| |
| fail: |
| if (netif_msg_drv(pegasus)) |
| dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__); |
| return -ETIMEDOUT; |
| } |
| |
| static void mdio_write(struct net_device *dev, int phy_id, int loc, int val) |
| { |
| pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev); |
| |
| write_mii_word(pegasus, phy_id, loc, val); |
| } |
| |
| static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata) |
| { |
| int i; |
| __u8 tmp; |
| __le16 retdatai; |
| int ret; |
| |
| set_register(pegasus, EpromCtrl, 0); |
| set_register(pegasus, EpromOffset, index); |
| set_register(pegasus, EpromCtrl, EPROM_READ); |
| |
| for (i = 0; i < REG_TIMEOUT; i++) { |
| ret = get_registers(pegasus, EpromCtrl, 1, &tmp); |
| if (tmp & EPROM_DONE) |
| break; |
| if (ret == -ESHUTDOWN) |
| goto fail; |
| } |
| if (i < REG_TIMEOUT) { |
| ret = get_registers(pegasus, EpromData, 2, &retdatai); |
| *retdata = le16_to_cpu(retdatai); |
| return ret; |
| } |
| |
| fail: |
| if (netif_msg_drv(pegasus)) |
| dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__); |
| return -ETIMEDOUT; |
| } |
| |
| #ifdef PEGASUS_WRITE_EEPROM |
| static inline void enable_eprom_write(pegasus_t * pegasus) |
| { |
| __u8 tmp; |
| int ret; |
| |
| get_registers(pegasus, EthCtrl2, 1, &tmp); |
| set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE); |
| } |
| |
| static inline void disable_eprom_write(pegasus_t * pegasus) |
| { |
| __u8 tmp; |
| int ret; |
| |
| get_registers(pegasus, EthCtrl2, 1, &tmp); |
| set_register(pegasus, EpromCtrl, 0); |
| set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE); |
| } |
| |
| static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data) |
| { |
| int i; |
| __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE }; |
| int ret; |
| |
| set_registers(pegasus, EpromOffset, 4, d); |
| enable_eprom_write(pegasus); |
| set_register(pegasus, EpromOffset, index); |
| set_registers(pegasus, EpromData, 2, &data); |
| set_register(pegasus, EpromCtrl, EPROM_WRITE); |
| |
| for (i = 0; i < REG_TIMEOUT; i++) { |
| ret = get_registers(pegasus, EpromCtrl, 1, &tmp); |
| if (ret == -ESHUTDOWN) |
| goto fail; |
| if (tmp & EPROM_DONE) |
| break; |
| } |
| disable_eprom_write(pegasus); |
| if (i < REG_TIMEOUT) |
| return ret; |
| fail: |
| if (netif_msg_drv(pegasus)) |
| dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__); |
| return -ETIMEDOUT; |
| } |
| #endif /* PEGASUS_WRITE_EEPROM */ |
| |
| static inline void get_node_id(pegasus_t * pegasus, __u8 * id) |
| { |
| int i; |
| __u16 w16; |
| |
| for (i = 0; i < 3; i++) { |
| read_eprom_word(pegasus, i, &w16); |
| ((__le16 *) id)[i] = cpu_to_le16p(&w16); |
| } |
| } |
| |
| static void set_ethernet_addr(pegasus_t * pegasus) |
| { |
| __u8 node_id[6]; |
| |
| get_node_id(pegasus, node_id); |
| set_registers(pegasus, EthID, sizeof (node_id), node_id); |
| memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id)); |
| } |
| |
| static inline int reset_mac(pegasus_t * pegasus) |
| { |
| __u8 data = 0x8; |
| int i; |
| |
| set_register(pegasus, EthCtrl1, data); |
| for (i = 0; i < REG_TIMEOUT; i++) { |
| get_registers(pegasus, EthCtrl1, 1, &data); |
| if (~data & 0x08) { |
| if (loopback & 1) |
| break; |
| if (mii_mode && (pegasus->features & HAS_HOME_PNA)) |
| set_register(pegasus, Gpio1, 0x34); |
| else |
| set_register(pegasus, Gpio1, 0x26); |
| set_register(pegasus, Gpio0, pegasus->features); |
| set_register(pegasus, Gpio0, DEFAULT_GPIO_SET); |
| break; |
| } |
| } |
| if (i == REG_TIMEOUT) |
| return -ETIMEDOUT; |
| |
| if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || |
| usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { |
| set_register(pegasus, Gpio0, 0x24); |
| set_register(pegasus, Gpio0, 0x26); |
| } |
| if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) { |
| __u16 auxmode; |
| read_mii_word(pegasus, 3, 0x1b, &auxmode); |
| write_mii_word(pegasus, 3, 0x1b, auxmode | 4); |
| } |
| |
| return 0; |
| } |
| |
| static int enable_net_traffic(struct net_device *dev, struct usb_device *usb) |
| { |
| __u16 linkpart; |
| __u8 data[4]; |
| pegasus_t *pegasus = netdev_priv(dev); |
| int ret; |
| |
| read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart); |
| data[0] = 0xc9; |
| data[1] = 0; |
| if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL)) |
| data[1] |= 0x20; /* set full duplex */ |
| if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF)) |
| data[1] |= 0x10; /* set 100 Mbps */ |
| if (mii_mode) |
| data[1] = 0; |
| data[2] = (loopback & 1) ? 0x09 : 0x01; |
| |
| memcpy(pegasus->eth_regs, data, sizeof (data)); |
| ret = set_registers(pegasus, EthCtrl0, 3, data); |
| |
| if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || |
| usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 || |
| usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { |
| u16 auxmode; |
| read_mii_word(pegasus, 0, 0x1b, &auxmode); |
| write_mii_word(pegasus, 0, 0x1b, auxmode | 4); |
| } |
| |
| return ret; |
| } |
| |
| static void fill_skb_pool(pegasus_t * pegasus) |
| { |
| int i; |
| |
| for (i = 0; i < RX_SKBS; i++) { |
| if (pegasus->rx_pool[i]) |
| continue; |
| pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2); |
| /* |
| ** we give up if the allocation fail. the tasklet will be |
| ** rescheduled again anyway... |
| */ |
| if (pegasus->rx_pool[i] == NULL) |
| return; |
| pegasus->rx_pool[i]->dev = pegasus->net; |
| skb_reserve(pegasus->rx_pool[i], 2); |
| } |
| } |
| |
| static void free_skb_pool(pegasus_t * pegasus) |
| { |
| int i; |
| |
| for (i = 0; i < RX_SKBS; i++) { |
| if (pegasus->rx_pool[i]) { |
| dev_kfree_skb(pegasus->rx_pool[i]); |
| pegasus->rx_pool[i] = NULL; |
| } |
| } |
| } |
| |
| static inline struct sk_buff *pull_skb(pegasus_t * pegasus) |
| { |
| int i; |
| struct sk_buff *skb; |
| |
| for (i = 0; i < RX_SKBS; i++) { |
| if (likely(pegasus->rx_pool[i] != NULL)) { |
| skb = pegasus->rx_pool[i]; |
| pegasus->rx_pool[i] = NULL; |
| return skb; |
| } |
| } |
| return NULL; |
| } |
| |
| static void read_bulk_callback(struct urb *urb, struct pt_regs *regs) |
| { |
| pegasus_t *pegasus = urb->context; |
| struct net_device *net; |
| int rx_status, count = urb->actual_length; |
| u8 *buf = urb->transfer_buffer; |
| __u16 pkt_len; |
| |
| if (!pegasus) |
| return; |
| |
| net = pegasus->net; |
| if (!netif_device_present(net) || !netif_running(net)) |
| return; |
| |
| switch (urb->status) { |
| case 0: |
| break; |
| case -ETIME: |
| if (netif_msg_rx_err(pegasus)) |
| pr_debug("%s: reset MAC\n", net->name); |
| pegasus->flags &= ~PEGASUS_RX_BUSY; |
| break; |
| case -EPIPE: /* stall, or disconnect from TT */ |
| /* FIXME schedule work to clear the halt */ |
| if (netif_msg_rx_err(pegasus)) |
| printk(KERN_WARNING "%s: no rx stall recovery\n", |
| net->name); |
| return; |
| case -ENOENT: |
| case -ECONNRESET: |
| case -ESHUTDOWN: |
| if (netif_msg_ifdown(pegasus)) |
| pr_debug("%s: rx unlink, %d\n", net->name, urb->status); |
| return; |
| default: |
| if (netif_msg_rx_err(pegasus)) |
| pr_debug("%s: RX status %d\n", net->name, urb->status); |
| goto goon; |
| } |
| |
| if (!count || count < 4) |
| goto goon; |
| |
| rx_status = buf[count - 2]; |
| if (rx_status & 0x1e) { |
| if (netif_msg_rx_err(pegasus)) |
| pr_debug("%s: RX packet error %x\n", |
| net->name, rx_status); |
| pegasus->stats.rx_errors++; |
| if (rx_status & 0x06) // long or runt |
| pegasus->stats.rx_length_errors++; |
| if (rx_status & 0x08) |
| pegasus->stats.rx_crc_errors++; |
| if (rx_status & 0x10) // extra bits |
| pegasus->stats.rx_frame_errors++; |
| goto goon; |
| } |
| if (pegasus->chip == 0x8513) { |
| pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer); |
| pkt_len &= 0x0fff; |
| pegasus->rx_skb->data += 2; |
| } else { |
| pkt_len = buf[count - 3] << 8; |
| pkt_len += buf[count - 4]; |
| pkt_len &= 0xfff; |
| pkt_len -= 8; |
| } |
| |
| /* |
| * If the packet is unreasonably long, quietly drop it rather than |
| * kernel panicing by calling skb_put. |
| */ |
| if (pkt_len > PEGASUS_MTU) |
| goto goon; |
| |
| /* |
| * at this point we are sure pegasus->rx_skb != NULL |
| * so we go ahead and pass up the packet. |
| */ |
| skb_put(pegasus->rx_skb, pkt_len); |
| pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net); |
| netif_rx(pegasus->rx_skb); |
| pegasus->stats.rx_packets++; |
| pegasus->stats.rx_bytes += pkt_len; |
| |
| if (pegasus->flags & PEGASUS_UNPLUG) |
| return; |
| |
| spin_lock(&pegasus->rx_pool_lock); |
| pegasus->rx_skb = pull_skb(pegasus); |
| spin_unlock(&pegasus->rx_pool_lock); |
| |
| if (pegasus->rx_skb == NULL) |
| goto tl_sched; |
| goon: |
| usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, |
| usb_rcvbulkpipe(pegasus->usb, 1), |
| pegasus->rx_skb->data, PEGASUS_MTU + 8, |
| read_bulk_callback, pegasus); |
| rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); |
| if (rx_status == -ENODEV) |
| netif_device_detach(pegasus->net); |
| else if (rx_status) { |
| pegasus->flags |= PEGASUS_RX_URB_FAIL; |
| goto tl_sched; |
| } else { |
| pegasus->flags &= ~PEGASUS_RX_URB_FAIL; |
| } |
| |
| return; |
| |
| tl_sched: |
| tasklet_schedule(&pegasus->rx_tl); |
| } |
| |
| static void rx_fixup(unsigned long data) |
| { |
| pegasus_t *pegasus; |
| unsigned long flags; |
| int status; |
| |
| pegasus = (pegasus_t *) data; |
| if (pegasus->flags & PEGASUS_UNPLUG) |
| return; |
| |
| spin_lock_irqsave(&pegasus->rx_pool_lock, flags); |
| fill_skb_pool(pegasus); |
| if (pegasus->flags & PEGASUS_RX_URB_FAIL) |
| if (pegasus->rx_skb) |
| goto try_again; |
| if (pegasus->rx_skb == NULL) { |
| pegasus->rx_skb = pull_skb(pegasus); |
| } |
| if (pegasus->rx_skb == NULL) { |
| if (netif_msg_rx_err(pegasus)) |
| printk(KERN_WARNING "%s: low on memory\n", |
| pegasus->net->name); |
| tasklet_schedule(&pegasus->rx_tl); |
| goto done; |
| } |
| usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, |
| usb_rcvbulkpipe(pegasus->usb, 1), |
| pegasus->rx_skb->data, PEGASUS_MTU + 8, |
| read_bulk_callback, pegasus); |
| try_again: |
| status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); |
| if (status == -ENODEV) |
| netif_device_detach(pegasus->net); |
| else if (status) { |
| pegasus->flags |= PEGASUS_RX_URB_FAIL; |
| tasklet_schedule(&pegasus->rx_tl); |
| } else { |
| pegasus->flags &= ~PEGASUS_RX_URB_FAIL; |
| } |
| done: |
| spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags); |
| } |
| |
| static void write_bulk_callback(struct urb *urb, struct pt_regs *regs) |
| { |
| pegasus_t *pegasus = urb->context; |
| struct net_device *net = pegasus->net; |
| |
| if (!pegasus) |
| return; |
| |
| if (!netif_device_present(net) || !netif_running(net)) |
| return; |
| |
| switch (urb->status) { |
| case -EPIPE: |
| /* FIXME schedule_work() to clear the tx halt */ |
| netif_stop_queue(net); |
| if (netif_msg_tx_err(pegasus)) |
| printk(KERN_WARNING "%s: no tx stall recovery\n", |
| net->name); |
| return; |
| case -ENOENT: |
| case -ECONNRESET: |
| case -ESHUTDOWN: |
| if (netif_msg_ifdown(pegasus)) |
| pr_debug("%s: tx unlink, %d\n", net->name, urb->status); |
| return; |
| default: |
| if (netif_msg_tx_err(pegasus)) |
| pr_info("%s: TX status %d\n", net->name, urb->status); |
| /* FALL THROUGH */ |
| case 0: |
| break; |
| } |
| |
| net->trans_start = jiffies; |
| netif_wake_queue(net); |
| } |
| |
| static void intr_callback(struct urb *urb, struct pt_regs *regs) |
| { |
| pegasus_t *pegasus = urb->context; |
| struct net_device *net; |
| int status; |
| |
| if (!pegasus) |
| return; |
| net = pegasus->net; |
| |
| switch (urb->status) { |
| case 0: |
| break; |
| case -ECONNRESET: /* unlink */ |
| case -ENOENT: |
| case -ESHUTDOWN: |
| return; |
| default: |
| /* some Pegasus-I products report LOTS of data |
| * toggle errors... avoid log spamming |
| */ |
| if (netif_msg_timer(pegasus)) |
| pr_debug("%s: intr status %d\n", net->name, |
| urb->status); |
| } |
| |
| if (urb->actual_length >= 6) { |
| u8 * d = urb->transfer_buffer; |
| |
| /* byte 0 == tx_status1, reg 2B */ |
| if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL |
| |LATE_COL|JABBER_TIMEOUT)) { |
| pegasus->stats.tx_errors++; |
| if (d[0] & TX_UNDERRUN) |
| pegasus->stats.tx_fifo_errors++; |
| if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT)) |
| pegasus->stats.tx_aborted_errors++; |
| if (d[0] & LATE_COL) |
| pegasus->stats.tx_window_errors++; |
| } |
| |
| /* d[5].LINK_STATUS lies on some adapters. |
| * d[0].NO_CARRIER kicks in only with failed TX. |
| * ... so monitoring with MII may be safest. |
| */ |
| if (d[0] & NO_CARRIER) |
| netif_carrier_off(net); |
| else |
| netif_carrier_on(net); |
| |
| /* bytes 3-4 == rx_lostpkt, reg 2E/2F */ |
| pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4]; |
| } |
| |
| status = usb_submit_urb(urb, SLAB_ATOMIC); |
| if (status == -ENODEV) |
| netif_device_detach(pegasus->net); |
| if (status && netif_msg_timer(pegasus)) |
| printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n", |
| net->name, status); |
| } |
| |
| static void pegasus_tx_timeout(struct net_device *net) |
| { |
| pegasus_t *pegasus = netdev_priv(net); |
| if (netif_msg_timer(pegasus)) |
| printk(KERN_WARNING "%s: tx timeout\n", net->name); |
| usb_unlink_urb(pegasus->tx_urb); |
| pegasus->stats.tx_errors++; |
| } |
| |
| static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net) |
| { |
| pegasus_t *pegasus = netdev_priv(net); |
| int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3; |
| int res; |
| __u16 l16 = skb->len; |
| |
| netif_stop_queue(net); |
| |
| ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16); |
| memcpy(pegasus->tx_buff + 2, skb->data, skb->len); |
| usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb, |
| usb_sndbulkpipe(pegasus->usb, 2), |
| pegasus->tx_buff, count, |
| write_bulk_callback, pegasus); |
| if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) { |
| if (netif_msg_tx_err(pegasus)) |
| printk(KERN_WARNING "%s: fail tx, %d\n", |
| net->name, res); |
| switch (res) { |
| case -EPIPE: /* stall, or disconnect from TT */ |
| /* cleanup should already have been scheduled */ |
| break; |
| case -ENODEV: /* disconnect() upcoming */ |
| netif_device_detach(pegasus->net); |
| break; |
| default: |
| pegasus->stats.tx_errors++; |
| netif_start_queue(net); |
| } |
| } else { |
| pegasus->stats.tx_packets++; |
| pegasus->stats.tx_bytes += skb->len; |
| net->trans_start = jiffies; |
| } |
| dev_kfree_skb(skb); |
| |
| return 0; |
| } |
| |
| static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev) |
| { |
| return &((pegasus_t *) netdev_priv(dev))->stats; |
| } |
| |
| static inline void disable_net_traffic(pegasus_t * pegasus) |
| { |
| int tmp = 0; |
| |
| set_registers(pegasus, EthCtrl0, 2, &tmp); |
| } |
| |
| static inline void get_interrupt_interval(pegasus_t * pegasus) |
| { |
| __u8 data[2]; |
| |
| read_eprom_word(pegasus, 4, (__u16 *) data); |
| if (pegasus->usb->speed != USB_SPEED_HIGH) { |
| if (data[1] < 0x80) { |
| if (netif_msg_timer(pegasus)) |
| dev_info(&pegasus->intf->dev, "intr interval " |
| "changed from %ums to %ums\n", |
| data[1], 0x80); |
| data[1] = 0x80; |
| #ifdef PEGASUS_WRITE_EEPROM |
| write_eprom_word(pegasus, 4, *(__u16 *) data); |
| #endif |
| } |
| } |
| pegasus->intr_interval = data[1]; |
| } |
| |
| static void set_carrier(struct net_device *net) |
| { |
| pegasus_t *pegasus = netdev_priv(net); |
| u16 tmp; |
| |
| if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp)) |
| return; |
| |
| if (tmp & BMSR_LSTATUS) |
| netif_carrier_on(net); |
| else |
| netif_carrier_off(net); |
| } |
| |
| static void free_all_urbs(pegasus_t * pegasus) |
| { |
| usb_free_urb(pegasus->intr_urb); |
| usb_free_urb(pegasus->tx_urb); |
| usb_free_urb(pegasus->rx_urb); |
| usb_free_urb(pegasus->ctrl_urb); |
| } |
| |
| static void unlink_all_urbs(pegasus_t * pegasus) |
| { |
| usb_kill_urb(pegasus->intr_urb); |
| usb_kill_urb(pegasus->tx_urb); |
| usb_kill_urb(pegasus->rx_urb); |
| usb_kill_urb(pegasus->ctrl_urb); |
| } |
| |
| static int alloc_urbs(pegasus_t * pegasus) |
| { |
| pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!pegasus->ctrl_urb) { |
| return 0; |
| } |
| pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!pegasus->rx_urb) { |
| usb_free_urb(pegasus->ctrl_urb); |
| return 0; |
| } |
| pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!pegasus->tx_urb) { |
| usb_free_urb(pegasus->rx_urb); |
| usb_free_urb(pegasus->ctrl_urb); |
| return 0; |
| } |
| pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!pegasus->intr_urb) { |
| usb_free_urb(pegasus->tx_urb); |
| usb_free_urb(pegasus->rx_urb); |
| usb_free_urb(pegasus->ctrl_urb); |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| static int pegasus_open(struct net_device *net) |
| { |
| pegasus_t *pegasus = netdev_priv(net); |
| int res; |
| |
| if (pegasus->rx_skb == NULL) |
| pegasus->rx_skb = pull_skb(pegasus); |
| /* |
| ** Note: no point to free the pool. it is empty :-) |
| */ |
| if (!pegasus->rx_skb) |
| return -ENOMEM; |
| |
| res = set_registers(pegasus, EthID, 6, net->dev_addr); |
| |
| usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, |
| usb_rcvbulkpipe(pegasus->usb, 1), |
| pegasus->rx_skb->data, PEGASUS_MTU + 8, |
| read_bulk_callback, pegasus); |
| if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) { |
| if (res == -ENODEV) |
| netif_device_detach(pegasus->net); |
| if (netif_msg_ifup(pegasus)) |
| pr_debug("%s: failed rx_urb, %d", net->name, res); |
| goto exit; |
| } |
| |
| usb_fill_int_urb(pegasus->intr_urb, pegasus->usb, |
| usb_rcvintpipe(pegasus->usb, 3), |
| pegasus->intr_buff, sizeof (pegasus->intr_buff), |
| intr_callback, pegasus, pegasus->intr_interval); |
| if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) { |
| if (res == -ENODEV) |
| netif_device_detach(pegasus->net); |
| if (netif_msg_ifup(pegasus)) |
| pr_debug("%s: failed intr_urb, %d\n", net->name, res); |
| usb_kill_urb(pegasus->rx_urb); |
| goto exit; |
| } |
| if ((res = enable_net_traffic(net, pegasus->usb))) { |
| if (netif_msg_ifup(pegasus)) |
| pr_debug("%s: can't enable_net_traffic() - %d\n", |
| net->name, res); |
| res = -EIO; |
| usb_kill_urb(pegasus->rx_urb); |
| usb_kill_urb(pegasus->intr_urb); |
| free_skb_pool(pegasus); |
| goto exit; |
| } |
| set_carrier(net); |
| netif_start_queue(net); |
| if (netif_msg_ifup(pegasus)) |
| pr_debug("%s: open\n", net->name); |
| res = 0; |
| exit: |
| return res; |
| } |
| |
| static int pegasus_close(struct net_device *net) |
| { |
| pegasus_t *pegasus = netdev_priv(net); |
| |
| netif_stop_queue(net); |
| if (!(pegasus->flags & PEGASUS_UNPLUG)) |
| disable_net_traffic(pegasus); |
| tasklet_kill(&pegasus->rx_tl); |
| unlink_all_urbs(pegasus); |
| |
| return 0; |
| } |
| |
| static void pegasus_get_drvinfo(struct net_device *dev, |
| struct ethtool_drvinfo *info) |
| { |
| pegasus_t *pegasus = netdev_priv(dev); |
| strncpy(info->driver, driver_name, sizeof (info->driver) - 1); |
| strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1); |
| usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info)); |
| } |
| |
| /* also handles three patterns of some kind in hardware */ |
| #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) |
| |
| static void |
| pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
| { |
| pegasus_t *pegasus = netdev_priv(dev); |
| |
| wol->supported = WAKE_MAGIC | WAKE_PHY; |
| wol->wolopts = pegasus->wolopts; |
| } |
| |
| static int |
| pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
| { |
| pegasus_t *pegasus = netdev_priv(dev); |
| u8 reg78 = 0x04; |
| |
| if (wol->wolopts & ~WOL_SUPPORTED) |
| return -EINVAL; |
| |
| if (wol->wolopts & WAKE_MAGIC) |
| reg78 |= 0x80; |
| if (wol->wolopts & WAKE_PHY) |
| reg78 |= 0x40; |
| /* FIXME this 0x10 bit still needs to get set in the chip... */ |
| if (wol->wolopts) |
| pegasus->eth_regs[0] |= 0x10; |
| else |
| pegasus->eth_regs[0] &= ~0x10; |
| pegasus->wolopts = wol->wolopts; |
| return set_register(pegasus, WakeupControl, reg78); |
| } |
| |
| static inline void pegasus_reset_wol(struct net_device *dev) |
| { |
| struct ethtool_wolinfo wol; |
| |
| memset(&wol, 0, sizeof wol); |
| (void) pegasus_set_wol(dev, &wol); |
| } |
| |
| static int |
| pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) |
| { |
| pegasus_t *pegasus; |
| |
| if (in_atomic()) |
| return 0; |
| |
| pegasus = netdev_priv(dev); |
| mii_ethtool_gset(&pegasus->mii, ecmd); |
| |
| return 0; |
| } |
| |
| static int |
| pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) |
| { |
| pegasus_t *pegasus = netdev_priv(dev); |
| return mii_ethtool_sset(&pegasus->mii, ecmd); |
| } |
| |
| static int pegasus_nway_reset(struct net_device *dev) |
| { |
| pegasus_t *pegasus = netdev_priv(dev); |
| return mii_nway_restart(&pegasus->mii); |
| } |
| |
| static u32 pegasus_get_link(struct net_device *dev) |
| { |
| pegasus_t *pegasus = netdev_priv(dev); |
| return mii_link_ok(&pegasus->mii); |
| } |
| |
| static u32 pegasus_get_msglevel(struct net_device *dev) |
| { |
| pegasus_t *pegasus = netdev_priv(dev); |
| return pegasus->msg_enable; |
| } |
| |
| static void pegasus_set_msglevel(struct net_device *dev, u32 v) |
| { |
| pegasus_t *pegasus = netdev_priv(dev); |
| pegasus->msg_enable = v; |
| } |
| |
| static struct ethtool_ops ops = { |
| .get_drvinfo = pegasus_get_drvinfo, |
| .get_settings = pegasus_get_settings, |
| .set_settings = pegasus_set_settings, |
| .nway_reset = pegasus_nway_reset, |
| .get_link = pegasus_get_link, |
| .get_msglevel = pegasus_get_msglevel, |
| .set_msglevel = pegasus_set_msglevel, |
| .get_wol = pegasus_get_wol, |
| .set_wol = pegasus_set_wol, |
| }; |
| |
| static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd) |
| { |
| __u16 *data = (__u16 *) & rq->ifr_ifru; |
| pegasus_t *pegasus = netdev_priv(net); |
| int res; |
| |
| switch (cmd) { |
| case SIOCDEVPRIVATE: |
| data[0] = pegasus->phy; |
| case SIOCDEVPRIVATE + 1: |
| read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]); |
| res = 0; |
| break; |
| case SIOCDEVPRIVATE + 2: |
| if (!capable(CAP_NET_ADMIN)) |
| return -EPERM; |
| write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]); |
| res = 0; |
| break; |
| default: |
| res = -EOPNOTSUPP; |
| } |
| return res; |
| } |
| |
| static void pegasus_set_multicast(struct net_device *net) |
| { |
| pegasus_t *pegasus = netdev_priv(net); |
| |
| if (net->flags & IFF_PROMISC) { |
| pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; |
| if (netif_msg_link(pegasus)) |
| pr_info("%s: Promiscuous mode enabled.\n", net->name); |
| } else if (net->mc_count || |
| (net->flags & IFF_ALLMULTI)) { |
| pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; |
| pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; |
| if (netif_msg_link(pegasus)) |
| pr_info("%s: set allmulti\n", net->name); |
| } else { |
| pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; |
| pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; |
| } |
| |
| pegasus->flags |= ETH_REGS_CHANGE; |
| ctrl_callback(pegasus->ctrl_urb, NULL); |
| } |
| |
| static __u8 mii_phy_probe(pegasus_t * pegasus) |
| { |
| int i; |
| __u16 tmp; |
| |
| for (i = 0; i < 32; i++) { |
| read_mii_word(pegasus, i, MII_BMSR, &tmp); |
| if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) |
| continue; |
| else |
| return i; |
| } |
| |
| return 0xff; |
| } |
| |
| static inline void setup_pegasus_II(pegasus_t * pegasus) |
| { |
| __u8 data = 0xa5; |
| |
| set_register(pegasus, Reg1d, 0); |
| set_register(pegasus, Reg7b, 1); |
| mdelay(100); |
| if ((pegasus->features & HAS_HOME_PNA) && mii_mode) |
| set_register(pegasus, Reg7b, 0); |
| else |
| set_register(pegasus, Reg7b, 2); |
| |
| set_register(pegasus, 0x83, data); |
| get_registers(pegasus, 0x83, 1, &data); |
| |
| if (data == 0xa5) { |
| pegasus->chip = 0x8513; |
| } else { |
| pegasus->chip = 0; |
| } |
| |
| set_register(pegasus, 0x80, 0xc0); |
| set_register(pegasus, 0x83, 0xff); |
| set_register(pegasus, 0x84, 0x01); |
| |
| if (pegasus->features & HAS_HOME_PNA && mii_mode) |
| set_register(pegasus, Reg81, 6); |
| else |
| set_register(pegasus, Reg81, 2); |
| } |
| |
| |
| static struct workqueue_struct *pegasus_workqueue = NULL; |
| #define CARRIER_CHECK_DELAY (2 * HZ) |
| |
| static void check_carrier(void *data) |
| { |
| pegasus_t *pegasus = data; |
| set_carrier(pegasus->net); |
| if (!(pegasus->flags & PEGASUS_UNPLUG)) { |
| queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, |
| CARRIER_CHECK_DELAY); |
| } |
| } |
| |
| static int pegasus_probe(struct usb_interface *intf, |
| const struct usb_device_id *id) |
| { |
| struct usb_device *dev = interface_to_usbdev(intf); |
| struct net_device *net; |
| pegasus_t *pegasus; |
| int dev_index = id - pegasus_ids; |
| int res = -ENOMEM; |
| |
| usb_get_dev(dev); |
| net = alloc_etherdev(sizeof(struct pegasus)); |
| if (!net) { |
| dev_err(&intf->dev, "can't allocate %s\n", "device"); |
| goto out; |
| } |
| |
| pegasus = netdev_priv(net); |
| memset(pegasus, 0, sizeof (struct pegasus)); |
| pegasus->dev_index = dev_index; |
| init_waitqueue_head(&pegasus->ctrl_wait); |
| |
| if (!alloc_urbs(pegasus)) { |
| dev_err(&intf->dev, "can't allocate %s\n", "urbs"); |
| goto out1; |
| } |
| |
| tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus); |
| |
| INIT_WORK(&pegasus->carrier_check, check_carrier, pegasus); |
| |
| pegasus->intf = intf; |
| pegasus->usb = dev; |
| pegasus->net = net; |
| SET_MODULE_OWNER(net); |
| net->open = pegasus_open; |
| net->stop = pegasus_close; |
| net->watchdog_timeo = PEGASUS_TX_TIMEOUT; |
| net->tx_timeout = pegasus_tx_timeout; |
| net->do_ioctl = pegasus_ioctl; |
| net->hard_start_xmit = pegasus_start_xmit; |
| net->set_multicast_list = pegasus_set_multicast; |
| net->get_stats = pegasus_netdev_stats; |
| SET_ETHTOOL_OPS(net, &ops); |
| pegasus->mii.dev = net; |
| pegasus->mii.mdio_read = mdio_read; |
| pegasus->mii.mdio_write = mdio_write; |
| pegasus->mii.phy_id_mask = 0x1f; |
| pegasus->mii.reg_num_mask = 0x1f; |
| spin_lock_init(&pegasus->rx_pool_lock); |
| pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV |
| | NETIF_MSG_PROBE | NETIF_MSG_LINK); |
| |
| pegasus->features = usb_dev_id[dev_index].private; |
| get_interrupt_interval(pegasus); |
| if (reset_mac(pegasus)) { |
| dev_err(&intf->dev, "can't reset MAC\n"); |
| res = -EIO; |
| goto out2; |
| } |
| set_ethernet_addr(pegasus); |
| fill_skb_pool(pegasus); |
| if (pegasus->features & PEGASUS_II) { |
| dev_info(&intf->dev, "setup Pegasus II specific registers\n"); |
| setup_pegasus_II(pegasus); |
| } |
| pegasus->phy = mii_phy_probe(pegasus); |
| if (pegasus->phy == 0xff) { |
| dev_warn(&intf->dev, "can't locate MII phy, using default\n"); |
| pegasus->phy = 1; |
| } |
| pegasus->mii.phy_id = pegasus->phy; |
| usb_set_intfdata(intf, pegasus); |
| SET_NETDEV_DEV(net, &intf->dev); |
| pegasus_reset_wol(net); |
| res = register_netdev(net); |
| if (res) |
| goto out3; |
| queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, |
| CARRIER_CHECK_DELAY); |
| |
| dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n", |
| net->name, |
| usb_dev_id[dev_index].name, |
| net->dev_addr [0], net->dev_addr [1], |
| net->dev_addr [2], net->dev_addr [3], |
| net->dev_addr [4], net->dev_addr [5]); |
| return 0; |
| |
| out3: |
| usb_set_intfdata(intf, NULL); |
| free_skb_pool(pegasus); |
| out2: |
| free_all_urbs(pegasus); |
| out1: |
| free_netdev(net); |
| out: |
| usb_put_dev(dev); |
| return res; |
| } |
| |
| static void pegasus_disconnect(struct usb_interface *intf) |
| { |
| struct pegasus *pegasus = usb_get_intfdata(intf); |
| |
| usb_set_intfdata(intf, NULL); |
| if (!pegasus) { |
| dev_dbg(&intf->dev, "unregistering non-bound device?\n"); |
| return; |
| } |
| |
| pegasus->flags |= PEGASUS_UNPLUG; |
| cancel_delayed_work(&pegasus->carrier_check); |
| unregister_netdev(pegasus->net); |
| usb_put_dev(interface_to_usbdev(intf)); |
| unlink_all_urbs(pegasus); |
| free_all_urbs(pegasus); |
| free_skb_pool(pegasus); |
| if (pegasus->rx_skb) |
| dev_kfree_skb(pegasus->rx_skb); |
| free_netdev(pegasus->net); |
| } |
| |
| static int pegasus_suspend (struct usb_interface *intf, pm_message_t message) |
| { |
| struct pegasus *pegasus = usb_get_intfdata(intf); |
| |
| netif_device_detach (pegasus->net); |
| cancel_delayed_work(&pegasus->carrier_check); |
| if (netif_running(pegasus->net)) { |
| usb_kill_urb(pegasus->rx_urb); |
| usb_kill_urb(pegasus->intr_urb); |
| } |
| return 0; |
| } |
| |
| static int pegasus_resume (struct usb_interface *intf) |
| { |
| struct pegasus *pegasus = usb_get_intfdata(intf); |
| |
| netif_device_attach (pegasus->net); |
| if (netif_running(pegasus->net)) { |
| pegasus->rx_urb->status = 0; |
| pegasus->rx_urb->actual_length = 0; |
| read_bulk_callback(pegasus->rx_urb, NULL); |
| |
| pegasus->intr_urb->status = 0; |
| pegasus->intr_urb->actual_length = 0; |
| intr_callback(pegasus->intr_urb, NULL); |
| } |
| queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, |
| CARRIER_CHECK_DELAY); |
| return 0; |
| } |
| |
| static struct usb_driver pegasus_driver = { |
| .name = driver_name, |
| .probe = pegasus_probe, |
| .disconnect = pegasus_disconnect, |
| .id_table = pegasus_ids, |
| .suspend = pegasus_suspend, |
| .resume = pegasus_resume, |
| }; |
| |
| static void parse_id(char *id) |
| { |
| unsigned int vendor_id=0, device_id=0, flags=0, i=0; |
| char *token, *name=NULL; |
| |
| if ((token = strsep(&id, ":")) != NULL) |
| name = token; |
| /* name now points to a null terminated string*/ |
| if ((token = strsep(&id, ":")) != NULL) |
| vendor_id = simple_strtoul(token, NULL, 16); |
| if ((token = strsep(&id, ":")) != NULL) |
| device_id = simple_strtoul(token, NULL, 16); |
| flags = simple_strtoul(id, NULL, 16); |
| pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n", |
| driver_name, name, vendor_id, device_id, flags); |
| |
| if (vendor_id > 0x10000 || vendor_id == 0) |
| return; |
| if (device_id > 0x10000 || device_id == 0) |
| return; |
| |
| for (i=0; usb_dev_id[i].name; i++); |
| usb_dev_id[i].name = name; |
| usb_dev_id[i].vendor = vendor_id; |
| usb_dev_id[i].device = device_id; |
| usb_dev_id[i].private = flags; |
| pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; |
| pegasus_ids[i].idVendor = vendor_id; |
| pegasus_ids[i].idProduct = device_id; |
| } |
| |
| static int __init pegasus_init(void) |
| { |
| pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION); |
| if (devid) |
| parse_id(devid); |
| pegasus_workqueue = create_singlethread_workqueue("pegasus"); |
| if (!pegasus_workqueue) |
| return -ENOMEM; |
| return usb_register(&pegasus_driver); |
| } |
| |
| static void __exit pegasus_exit(void) |
| { |
| destroy_workqueue(pegasus_workqueue); |
| usb_deregister(&pegasus_driver); |
| } |
| |
| module_init(pegasus_init); |
| module_exit(pegasus_exit); |