Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /**************************************************************** |
| 2 | * |
| 3 | * kaweth.c - driver for KL5KUSB101 based USB->Ethernet |
| 4 | * |
| 5 | * (c) 2000 Interlan Communications |
| 6 | * (c) 2000 Stephane Alnet |
| 7 | * (C) 2001 Brad Hards |
| 8 | * (C) 2002 Oliver Neukum |
| 9 | * |
| 10 | * Original author: The Zapman <zapman@interlan.net> |
| 11 | * Inspired by, and much credit goes to Michael Rothwell |
| 12 | * <rothwell@interlan.net> for the test equipment, help, and patience |
| 13 | * Based off of (and with thanks to) Petko Manolov's pegaus.c driver. |
| 14 | * Also many thanks to Joel Silverman and Ed Surprenant at Kawasaki |
| 15 | * for providing the firmware and driver resources. |
| 16 | * |
| 17 | * This program is free software; you can redistribute it and/or |
| 18 | * modify it under the terms of the GNU General Public License as |
| 19 | * published by the Free Software Foundation; either version 2, or |
| 20 | * (at your option) any later version. |
| 21 | * |
| 22 | * This program is distributed in the hope that it will be useful, |
| 23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 25 | * GNU General Public License for more details. |
| 26 | * |
| 27 | * You should have received a copy of the GNU General Public License |
| 28 | * along with this program; if not, write to the Free Software Foundation, |
| 29 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 30 | * |
| 31 | ****************************************************************/ |
| 32 | |
| 33 | /* TODO: |
| 34 | * Fix in_interrupt() problem |
| 35 | * Develop test procedures for USB net interfaces |
| 36 | * Run test procedures |
| 37 | * Fix bugs from previous two steps |
| 38 | * Snoop other OSs for any tricks we're not doing |
| 39 | * SMP locking |
| 40 | * Reduce arbitrary timeouts |
| 41 | * Smart multicast support |
| 42 | * Temporary MAC change support |
| 43 | * Tunable SOFs parameter - ioctl()? |
| 44 | * Ethernet stats collection |
| 45 | * Code formatting improvements |
| 46 | */ |
| 47 | |
| 48 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <linux/slab.h> |
| 50 | #include <linux/string.h> |
| 51 | #include <linux/init.h> |
| 52 | #include <linux/delay.h> |
| 53 | #include <linux/netdevice.h> |
| 54 | #include <linux/etherdevice.h> |
| 55 | #include <linux/usb.h> |
| 56 | #include <linux/types.h> |
| 57 | #include <linux/ethtool.h> |
| 58 | #include <linux/pci.h> |
| 59 | #include <linux/dma-mapping.h> |
| 60 | #include <linux/wait.h> |
| 61 | #include <asm/uaccess.h> |
| 62 | #include <asm/semaphore.h> |
| 63 | #include <asm/byteorder.h> |
| 64 | |
| 65 | #undef DEBUG |
| 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | #include "kawethfw.h" |
| 68 | |
| 69 | #define KAWETH_MTU 1514 |
| 70 | #define KAWETH_BUF_SIZE 1664 |
| 71 | #define KAWETH_TX_TIMEOUT (5 * HZ) |
| 72 | #define KAWETH_SCRATCH_SIZE 32 |
| 73 | #define KAWETH_FIRMWARE_BUF_SIZE 4096 |
| 74 | #define KAWETH_CONTROL_TIMEOUT (30 * HZ) |
| 75 | |
| 76 | #define KAWETH_STATUS_BROKEN 0x0000001 |
| 77 | #define KAWETH_STATUS_CLOSING 0x0000002 |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 78 | #define KAWETH_STATUS_SUSPENDING 0x0000004 |
| 79 | |
| 80 | #define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | #define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01 |
| 83 | #define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02 |
| 84 | #define KAWETH_PACKET_FILTER_DIRECTED 0x04 |
| 85 | #define KAWETH_PACKET_FILTER_BROADCAST 0x08 |
| 86 | #define KAWETH_PACKET_FILTER_MULTICAST 0x10 |
| 87 | |
| 88 | /* Table 7 */ |
| 89 | #define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00 |
| 90 | #define KAWETH_COMMAND_MULTICAST_FILTERS 0x01 |
| 91 | #define KAWETH_COMMAND_SET_PACKET_FILTER 0x02 |
| 92 | #define KAWETH_COMMAND_STATISTICS 0x03 |
| 93 | #define KAWETH_COMMAND_SET_TEMP_MAC 0x06 |
| 94 | #define KAWETH_COMMAND_GET_TEMP_MAC 0x07 |
| 95 | #define KAWETH_COMMAND_SET_URB_SIZE 0x08 |
| 96 | #define KAWETH_COMMAND_SET_SOFS_WAIT 0x09 |
| 97 | #define KAWETH_COMMAND_SCAN 0xFF |
| 98 | |
| 99 | #define KAWETH_SOFS_TO_WAIT 0x05 |
| 100 | |
| 101 | #define INTBUFFERSIZE 4 |
| 102 | |
| 103 | #define STATE_OFFSET 0 |
| 104 | #define STATE_MASK 0x40 |
| 105 | #define STATE_SHIFT 5 |
| 106 | |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 107 | #define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED) |
| 108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
| 110 | MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr>, Brad Hards <bhards@bigpond.net.au> and Oliver Neukum <oliver@neukum.org>"); |
| 111 | MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver"); |
| 112 | MODULE_LICENSE("GPL"); |
| 113 | |
| 114 | static const char driver_name[] = "kaweth"; |
| 115 | |
| 116 | static int kaweth_probe( |
| 117 | struct usb_interface *intf, |
| 118 | const struct usb_device_id *id /* from id_table */ |
| 119 | ); |
| 120 | static void kaweth_disconnect(struct usb_interface *intf); |
| 121 | static int kaweth_internal_control_msg(struct usb_device *usb_dev, |
| 122 | unsigned int pipe, |
| 123 | struct usb_ctrlrequest *cmd, void *data, |
| 124 | int len, int timeout); |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 125 | static int kaweth_suspend(struct usb_interface *intf, pm_message_t message); |
| 126 | static int kaweth_resume(struct usb_interface *intf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | |
| 128 | /**************************************************************** |
| 129 | * usb_device_id |
| 130 | ****************************************************************/ |
| 131 | static struct usb_device_id usb_klsi_table[] = { |
| 132 | { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */ |
| 133 | { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */ |
| 134 | { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */ |
| 135 | { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */ |
| 136 | { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */ |
| 137 | { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */ |
| 138 | { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */ |
| 139 | { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */ |
| 140 | { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */ |
| 141 | { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */ |
| 142 | { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */ |
| 143 | { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */ |
| 144 | { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */ |
| 145 | { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */ |
| 146 | { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */ |
| 147 | { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */ |
| 148 | { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */ |
| 149 | { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */ |
| 150 | { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */ |
| 151 | { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */ |
| 152 | { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */ |
| 153 | { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */ |
| 154 | { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */ |
| 155 | { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */ |
| 156 | { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */ |
| 157 | { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */ |
| 158 | { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */ |
| 159 | { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */ |
| 160 | { USB_DEVICE(0x1485, 0x0002) }, /* Psion Dacom Gold Port Ethernet */ |
| 161 | { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */ |
| 162 | { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */ |
| 163 | { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */ |
Oliver Neukum | 486ba2a | 2006-09-28 22:21:19 +0200 | [diff] [blame] | 164 | { USB_DEVICE(0x1668, 0x0323) }, /* Actiontec USB Ethernet */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */ |
| 166 | {} /* Null terminator */ |
| 167 | }; |
| 168 | |
| 169 | MODULE_DEVICE_TABLE (usb, usb_klsi_table); |
| 170 | |
| 171 | /**************************************************************** |
| 172 | * kaweth_driver |
| 173 | ****************************************************************/ |
| 174 | static struct usb_driver kaweth_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | .name = driver_name, |
| 176 | .probe = kaweth_probe, |
| 177 | .disconnect = kaweth_disconnect, |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 178 | .suspend = kaweth_suspend, |
| 179 | .resume = kaweth_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | .id_table = usb_klsi_table, |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 181 | .supports_autosuspend = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | }; |
| 183 | |
| 184 | typedef __u8 eth_addr_t[6]; |
| 185 | |
| 186 | /**************************************************************** |
| 187 | * usb_eth_dev |
| 188 | ****************************************************************/ |
| 189 | struct usb_eth_dev { |
| 190 | char *name; |
| 191 | __u16 vendor; |
| 192 | __u16 device; |
| 193 | void *pdata; |
| 194 | }; |
| 195 | |
| 196 | /**************************************************************** |
| 197 | * kaweth_ethernet_configuration |
| 198 | * Refer Table 8 |
| 199 | ****************************************************************/ |
| 200 | struct kaweth_ethernet_configuration |
| 201 | { |
| 202 | __u8 size; |
| 203 | __u8 reserved1; |
| 204 | __u8 reserved2; |
| 205 | eth_addr_t hw_addr; |
| 206 | __u32 statistics_mask; |
| 207 | __le16 segment_size; |
| 208 | __u16 max_multicast_filters; |
| 209 | __u8 reserved3; |
| 210 | } __attribute__ ((packed)); |
| 211 | |
| 212 | /**************************************************************** |
| 213 | * kaweth_device |
| 214 | ****************************************************************/ |
| 215 | struct kaweth_device |
| 216 | { |
| 217 | spinlock_t device_lock; |
| 218 | |
| 219 | __u32 status; |
| 220 | int end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | int suspend_lowmem_rx; |
| 222 | int suspend_lowmem_ctrl; |
| 223 | int linkstate; |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 224 | int opened; |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 225 | struct delayed_work lowmem_work; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
| 227 | struct usb_device *dev; |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 228 | struct usb_interface *intf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | struct net_device *net; |
| 230 | wait_queue_head_t term_wait; |
| 231 | |
| 232 | struct urb *rx_urb; |
| 233 | struct urb *tx_urb; |
| 234 | struct urb *irq_urb; |
| 235 | |
| 236 | dma_addr_t intbufferhandle; |
| 237 | __u8 *intbuffer; |
| 238 | dma_addr_t rxbufferhandle; |
| 239 | __u8 *rx_buf; |
| 240 | |
| 241 | |
| 242 | struct sk_buff *tx_skb; |
| 243 | |
| 244 | __u8 *firmware_buf; |
| 245 | __u8 scratch[KAWETH_SCRATCH_SIZE]; |
| 246 | __u16 packet_filter_bitmap; |
| 247 | |
| 248 | struct kaweth_ethernet_configuration configuration; |
| 249 | |
| 250 | struct net_device_stats stats; |
| 251 | }; |
| 252 | |
| 253 | |
| 254 | /**************************************************************** |
| 255 | * kaweth_control |
| 256 | ****************************************************************/ |
| 257 | static int kaweth_control(struct kaweth_device *kaweth, |
| 258 | unsigned int pipe, |
| 259 | __u8 request, |
| 260 | __u8 requesttype, |
| 261 | __u16 value, |
| 262 | __u16 index, |
| 263 | void *data, |
| 264 | __u16 size, |
| 265 | int timeout) |
| 266 | { |
| 267 | struct usb_ctrlrequest *dr; |
| 268 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 269 | dbg("kaweth_control()"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | |
| 271 | if(in_interrupt()) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 272 | dbg("in_interrupt()"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | return -EBUSY; |
| 274 | } |
| 275 | |
| 276 | dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC); |
| 277 | |
| 278 | if (!dr) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 279 | dbg("kmalloc() failed"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | return -ENOMEM; |
| 281 | } |
| 282 | |
| 283 | dr->bRequestType= requesttype; |
| 284 | dr->bRequest = request; |
| 285 | dr->wValue = cpu_to_le16p(&value); |
| 286 | dr->wIndex = cpu_to_le16p(&index); |
| 287 | dr->wLength = cpu_to_le16p(&size); |
| 288 | |
| 289 | return kaweth_internal_control_msg(kaweth->dev, |
| 290 | pipe, |
| 291 | dr, |
| 292 | data, |
| 293 | size, |
| 294 | timeout); |
| 295 | } |
| 296 | |
| 297 | /**************************************************************** |
| 298 | * kaweth_read_configuration |
| 299 | ****************************************************************/ |
| 300 | static int kaweth_read_configuration(struct kaweth_device *kaweth) |
| 301 | { |
| 302 | int retval; |
| 303 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 304 | dbg("Reading kaweth configuration"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | |
| 306 | retval = kaweth_control(kaweth, |
| 307 | usb_rcvctrlpipe(kaweth->dev, 0), |
| 308 | KAWETH_COMMAND_GET_ETHERNET_DESC, |
| 309 | USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE, |
| 310 | 0, |
| 311 | 0, |
| 312 | (void *)&kaweth->configuration, |
| 313 | sizeof(kaweth->configuration), |
| 314 | KAWETH_CONTROL_TIMEOUT); |
| 315 | |
| 316 | return retval; |
| 317 | } |
| 318 | |
| 319 | /**************************************************************** |
| 320 | * kaweth_set_urb_size |
| 321 | ****************************************************************/ |
| 322 | static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size) |
| 323 | { |
| 324 | int retval; |
| 325 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 326 | dbg("Setting URB size to %d", (unsigned)urb_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | |
| 328 | retval = kaweth_control(kaweth, |
| 329 | usb_sndctrlpipe(kaweth->dev, 0), |
| 330 | KAWETH_COMMAND_SET_URB_SIZE, |
| 331 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 332 | urb_size, |
| 333 | 0, |
| 334 | (void *)&kaweth->scratch, |
| 335 | 0, |
| 336 | KAWETH_CONTROL_TIMEOUT); |
| 337 | |
| 338 | return retval; |
| 339 | } |
| 340 | |
| 341 | /**************************************************************** |
| 342 | * kaweth_set_sofs_wait |
| 343 | ****************************************************************/ |
| 344 | static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait) |
| 345 | { |
| 346 | int retval; |
| 347 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 348 | dbg("Set SOFS wait to %d", (unsigned)sofs_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | |
| 350 | retval = kaweth_control(kaweth, |
| 351 | usb_sndctrlpipe(kaweth->dev, 0), |
| 352 | KAWETH_COMMAND_SET_SOFS_WAIT, |
| 353 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 354 | sofs_wait, |
| 355 | 0, |
| 356 | (void *)&kaweth->scratch, |
| 357 | 0, |
| 358 | KAWETH_CONTROL_TIMEOUT); |
| 359 | |
| 360 | return retval; |
| 361 | } |
| 362 | |
| 363 | /**************************************************************** |
| 364 | * kaweth_set_receive_filter |
| 365 | ****************************************************************/ |
| 366 | static int kaweth_set_receive_filter(struct kaweth_device *kaweth, |
| 367 | __u16 receive_filter) |
| 368 | { |
| 369 | int retval; |
| 370 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 371 | dbg("Set receive filter to %d", (unsigned)receive_filter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
| 373 | retval = kaweth_control(kaweth, |
| 374 | usb_sndctrlpipe(kaweth->dev, 0), |
| 375 | KAWETH_COMMAND_SET_PACKET_FILTER, |
| 376 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 377 | receive_filter, |
| 378 | 0, |
| 379 | (void *)&kaweth->scratch, |
| 380 | 0, |
| 381 | KAWETH_CONTROL_TIMEOUT); |
| 382 | |
| 383 | return retval; |
| 384 | } |
| 385 | |
| 386 | /**************************************************************** |
| 387 | * kaweth_download_firmware |
| 388 | ****************************************************************/ |
| 389 | static int kaweth_download_firmware(struct kaweth_device *kaweth, |
| 390 | __u8 *data, |
| 391 | __u16 data_len, |
| 392 | __u8 interrupt, |
| 393 | __u8 type) |
| 394 | { |
| 395 | if(data_len > KAWETH_FIRMWARE_BUF_SIZE) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 396 | err("Firmware too big: %d", data_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | return -ENOSPC; |
| 398 | } |
| 399 | |
| 400 | memcpy(kaweth->firmware_buf, data, data_len); |
| 401 | |
| 402 | kaweth->firmware_buf[2] = (data_len & 0xFF) - 7; |
| 403 | kaweth->firmware_buf[3] = data_len >> 8; |
| 404 | kaweth->firmware_buf[4] = type; |
| 405 | kaweth->firmware_buf[5] = interrupt; |
| 406 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 407 | dbg("High: %i, Low:%i", kaweth->firmware_buf[3], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | kaweth->firmware_buf[2]); |
| 409 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 410 | dbg("Downloading firmware at %p to kaweth device at %p", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | data, |
| 412 | kaweth); |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 413 | dbg("Firmware length: %d", data_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | |
| 415 | return kaweth_control(kaweth, |
| 416 | usb_sndctrlpipe(kaweth->dev, 0), |
| 417 | KAWETH_COMMAND_SCAN, |
| 418 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 419 | 0, |
| 420 | 0, |
| 421 | (void *)kaweth->firmware_buf, |
| 422 | data_len, |
| 423 | KAWETH_CONTROL_TIMEOUT); |
| 424 | } |
| 425 | |
| 426 | /**************************************************************** |
| 427 | * kaweth_trigger_firmware |
| 428 | ****************************************************************/ |
| 429 | static int kaweth_trigger_firmware(struct kaweth_device *kaweth, |
| 430 | __u8 interrupt) |
| 431 | { |
| 432 | kaweth->firmware_buf[0] = 0xB6; |
| 433 | kaweth->firmware_buf[1] = 0xC3; |
| 434 | kaweth->firmware_buf[2] = 0x01; |
| 435 | kaweth->firmware_buf[3] = 0x00; |
| 436 | kaweth->firmware_buf[4] = 0x06; |
| 437 | kaweth->firmware_buf[5] = interrupt; |
| 438 | kaweth->firmware_buf[6] = 0x00; |
| 439 | kaweth->firmware_buf[7] = 0x00; |
| 440 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 441 | dbg("Triggering firmware"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | |
| 443 | return kaweth_control(kaweth, |
| 444 | usb_sndctrlpipe(kaweth->dev, 0), |
| 445 | KAWETH_COMMAND_SCAN, |
| 446 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 447 | 0, |
| 448 | 0, |
| 449 | (void *)kaweth->firmware_buf, |
| 450 | 8, |
| 451 | KAWETH_CONTROL_TIMEOUT); |
| 452 | } |
| 453 | |
| 454 | /**************************************************************** |
| 455 | * kaweth_reset |
| 456 | ****************************************************************/ |
| 457 | static int kaweth_reset(struct kaweth_device *kaweth) |
| 458 | { |
| 459 | int result; |
| 460 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 461 | dbg("kaweth_reset(%p)", kaweth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | result = kaweth_control(kaweth, |
| 463 | usb_sndctrlpipe(kaweth->dev, 0), |
| 464 | USB_REQ_SET_CONFIGURATION, |
| 465 | 0, |
| 466 | kaweth->dev->config[0].desc.bConfigurationValue, |
| 467 | 0, |
| 468 | NULL, |
| 469 | 0, |
| 470 | KAWETH_CONTROL_TIMEOUT); |
| 471 | |
Guillaume GOURAT / | f2d45cd | 2005-10-21 14:01:35 +0200 | [diff] [blame] | 472 | mdelay(10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 474 | dbg("kaweth_reset() returns %d.",result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | |
| 476 | return result; |
| 477 | } |
| 478 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 479 | static void kaweth_usb_receive(struct urb *); |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 480 | static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
| 482 | /**************************************************************** |
| 483 | int_callback |
| 484 | *****************************************************************/ |
| 485 | |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 486 | static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | { |
| 488 | int status; |
| 489 | |
| 490 | status = usb_submit_urb (kaweth->irq_urb, mf); |
| 491 | if (unlikely(status == -ENOMEM)) { |
| 492 | kaweth->suspend_lowmem_ctrl = 1; |
| 493 | schedule_delayed_work(&kaweth->lowmem_work, HZ/4); |
| 494 | } else { |
| 495 | kaweth->suspend_lowmem_ctrl = 0; |
| 496 | } |
| 497 | |
| 498 | if (status) |
| 499 | err ("can't resubmit intr, %s-%s, status %d", |
| 500 | kaweth->dev->bus->bus_name, |
| 501 | kaweth->dev->devpath, status); |
| 502 | } |
| 503 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 504 | static void int_callback(struct urb *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | { |
| 506 | struct kaweth_device *kaweth = u->context; |
| 507 | int act_state; |
| 508 | |
| 509 | switch (u->status) { |
| 510 | case 0: /* success */ |
| 511 | break; |
| 512 | case -ECONNRESET: /* unlink */ |
| 513 | case -ENOENT: |
| 514 | case -ESHUTDOWN: |
| 515 | return; |
| 516 | /* -EPIPE: should clear the halt */ |
| 517 | default: /* error */ |
| 518 | goto resubmit; |
| 519 | } |
| 520 | |
| 521 | /* we check the link state to report changes */ |
| 522 | if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) { |
Oliver Neukum | 58125f9 | 2005-06-15 22:26:38 -0700 | [diff] [blame] | 523 | if (act_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | netif_carrier_on(kaweth->net); |
| 525 | else |
| 526 | netif_carrier_off(kaweth->net); |
| 527 | |
| 528 | kaweth->linkstate = act_state; |
| 529 | } |
| 530 | resubmit: |
| 531 | kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC); |
| 532 | } |
| 533 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 534 | static void kaweth_resubmit_tl(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 536 | struct kaweth_device *kaweth = |
| 537 | container_of(work, struct kaweth_device, lowmem_work.work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 539 | if (IS_BLOCKED(kaweth->status)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | return; |
| 541 | |
| 542 | if (kaweth->suspend_lowmem_rx) |
| 543 | kaweth_resubmit_rx_urb(kaweth, GFP_NOIO); |
| 544 | |
| 545 | if (kaweth->suspend_lowmem_ctrl) |
| 546 | kaweth_resubmit_int_urb(kaweth, GFP_NOIO); |
| 547 | } |
| 548 | |
| 549 | |
| 550 | /**************************************************************** |
| 551 | * kaweth_resubmit_rx_urb |
| 552 | ****************************************************************/ |
| 553 | static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth, |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 554 | gfp_t mem_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | { |
| 556 | int result; |
| 557 | |
| 558 | usb_fill_bulk_urb(kaweth->rx_urb, |
| 559 | kaweth->dev, |
| 560 | usb_rcvbulkpipe(kaweth->dev, 1), |
| 561 | kaweth->rx_buf, |
| 562 | KAWETH_BUF_SIZE, |
| 563 | kaweth_usb_receive, |
| 564 | kaweth); |
| 565 | kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| 566 | kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle; |
| 567 | |
| 568 | if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) { |
| 569 | if (result == -ENOMEM) { |
| 570 | kaweth->suspend_lowmem_rx = 1; |
| 571 | schedule_delayed_work(&kaweth->lowmem_work, HZ/4); |
| 572 | } |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 573 | err("resubmitting rx_urb %d failed", result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | } else { |
| 575 | kaweth->suspend_lowmem_rx = 0; |
| 576 | } |
| 577 | |
| 578 | return result; |
| 579 | } |
| 580 | |
| 581 | static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth); |
| 582 | |
| 583 | /**************************************************************** |
| 584 | * kaweth_usb_receive |
| 585 | ****************************************************************/ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 586 | static void kaweth_usb_receive(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | { |
| 588 | struct kaweth_device *kaweth = urb->context; |
| 589 | struct net_device *net = kaweth->net; |
| 590 | |
| 591 | int count = urb->actual_length; |
| 592 | int count2 = urb->transfer_buffer_length; |
| 593 | |
| 594 | __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf); |
| 595 | |
| 596 | struct sk_buff *skb; |
| 597 | |
| 598 | if(unlikely(urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)) |
| 599 | /* we are killed - set a flag and wake the disconnect handler */ |
| 600 | { |
| 601 | kaweth->end = 1; |
| 602 | wake_up(&kaweth->term_wait); |
| 603 | return; |
| 604 | } |
| 605 | |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 606 | spin_lock(&kaweth->device_lock); |
| 607 | if (IS_BLOCKED(kaweth->status)) { |
| 608 | spin_unlock(&kaweth->device_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | return; |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 610 | } |
| 611 | spin_unlock(&kaweth->device_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | |
| 613 | if(urb->status && urb->status != -EREMOTEIO && count != 1) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 614 | err("%s RX status: %d count: %d packet_len: %d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | net->name, |
| 616 | urb->status, |
| 617 | count, |
| 618 | (int)pkt_len); |
| 619 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); |
| 620 | return; |
| 621 | } |
| 622 | |
| 623 | if(kaweth->net && (count > 2)) { |
| 624 | if(pkt_len > (count - 2)) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 625 | err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len, count); |
| 626 | err("Packet len & 2047: %x", pkt_len & 2047); |
| 627 | err("Count 2: %x", count2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); |
| 629 | return; |
| 630 | } |
| 631 | |
| 632 | if(!(skb = dev_alloc_skb(pkt_len+2))) { |
| 633 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); |
| 634 | return; |
| 635 | } |
| 636 | |
| 637 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
| 638 | |
| 639 | skb->dev = net; |
| 640 | |
| 641 | eth_copy_and_sum(skb, kaweth->rx_buf + 2, pkt_len, 0); |
| 642 | |
| 643 | skb_put(skb, pkt_len); |
| 644 | |
| 645 | skb->protocol = eth_type_trans(skb, net); |
| 646 | |
| 647 | netif_rx(skb); |
| 648 | |
| 649 | kaweth->stats.rx_packets++; |
| 650 | kaweth->stats.rx_bytes += pkt_len; |
| 651 | } |
| 652 | |
| 653 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); |
| 654 | } |
| 655 | |
| 656 | /**************************************************************** |
| 657 | * kaweth_open |
| 658 | ****************************************************************/ |
| 659 | static int kaweth_open(struct net_device *net) |
| 660 | { |
| 661 | struct kaweth_device *kaweth = netdev_priv(net); |
| 662 | int res; |
| 663 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 664 | dbg("Opening network device."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 666 | res = usb_autopm_get_interface(kaweth->intf); |
| 667 | if (res) { |
| 668 | err("Interface cannot be resumed."); |
| 669 | return -EIO; |
| 670 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL); |
| 672 | if (res) |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 673 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | |
| 675 | usb_fill_int_urb( |
| 676 | kaweth->irq_urb, |
| 677 | kaweth->dev, |
| 678 | usb_rcvintpipe(kaweth->dev, 3), |
| 679 | kaweth->intbuffer, |
| 680 | INTBUFFERSIZE, |
| 681 | int_callback, |
| 682 | kaweth, |
| 683 | 250); /* overriding the descriptor */ |
| 684 | kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle; |
| 685 | kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| 686 | |
| 687 | res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL); |
| 688 | if (res) { |
| 689 | usb_kill_urb(kaweth->rx_urb); |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 690 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | } |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 692 | kaweth->opened = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | |
| 694 | netif_start_queue(net); |
| 695 | |
| 696 | kaweth_async_set_rx_mode(kaweth); |
| 697 | return 0; |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 698 | |
| 699 | err_out: |
| 700 | usb_autopm_enable(kaweth->intf); |
| 701 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | } |
| 703 | |
| 704 | /**************************************************************** |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 705 | * kaweth_kill_urbs |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | ****************************************************************/ |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 707 | static void kaweth_kill_urbs(struct kaweth_device *kaweth) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | usb_kill_urb(kaweth->irq_urb); |
| 710 | usb_kill_urb(kaweth->rx_urb); |
Herbert Xu | d23b536 | 2005-11-17 09:47:45 -0800 | [diff] [blame] | 711 | usb_kill_urb(kaweth->tx_urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | |
| 713 | flush_scheduled_work(); |
| 714 | |
| 715 | /* a scheduled work may have resubmitted, |
| 716 | we hit them again */ |
| 717 | usb_kill_urb(kaweth->irq_urb); |
| 718 | usb_kill_urb(kaweth->rx_urb); |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 719 | } |
| 720 | |
| 721 | /**************************************************************** |
| 722 | * kaweth_close |
| 723 | ****************************************************************/ |
| 724 | static int kaweth_close(struct net_device *net) |
| 725 | { |
| 726 | struct kaweth_device *kaweth = netdev_priv(net); |
| 727 | |
| 728 | netif_stop_queue(net); |
| 729 | kaweth->opened = 0; |
| 730 | |
| 731 | kaweth->status |= KAWETH_STATUS_CLOSING; |
| 732 | |
| 733 | kaweth_kill_urbs(kaweth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | |
| 735 | kaweth->status &= ~KAWETH_STATUS_CLOSING; |
| 736 | |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 737 | usb_autopm_enable(kaweth->intf); |
| 738 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | return 0; |
| 740 | } |
| 741 | |
| 742 | static void kaweth_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
| 743 | { |
Oliver Neukum | b3ebd52 | 2007-01-16 12:01:26 +0100 | [diff] [blame] | 744 | struct kaweth_device *kaweth = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | |
| 746 | strlcpy(info->driver, driver_name, sizeof(info->driver)); |
Oliver Neukum | b3ebd52 | 2007-01-16 12:01:26 +0100 | [diff] [blame] | 747 | usb_make_path(kaweth->dev, info->bus_info, sizeof (info->bus_info)); |
| 748 | } |
| 749 | |
| 750 | static u32 kaweth_get_link(struct net_device *dev) |
| 751 | { |
| 752 | struct kaweth_device *kaweth = netdev_priv(dev); |
| 753 | |
| 754 | return kaweth->linkstate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | } |
| 756 | |
| 757 | static struct ethtool_ops ops = { |
Oliver Neukum | b3ebd52 | 2007-01-16 12:01:26 +0100 | [diff] [blame] | 758 | .get_drvinfo = kaweth_get_drvinfo, |
| 759 | .get_link = kaweth_get_link |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | }; |
| 761 | |
| 762 | /**************************************************************** |
| 763 | * kaweth_usb_transmit_complete |
| 764 | ****************************************************************/ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 765 | static void kaweth_usb_transmit_complete(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | { |
| 767 | struct kaweth_device *kaweth = urb->context; |
| 768 | struct sk_buff *skb = kaweth->tx_skb; |
| 769 | |
| 770 | if (unlikely(urb->status != 0)) |
| 771 | if (urb->status != -ENOENT) |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 772 | dbg("%s: TX status %d.", kaweth->net->name, urb->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | |
| 774 | netif_wake_queue(kaweth->net); |
| 775 | dev_kfree_skb_irq(skb); |
| 776 | } |
| 777 | |
| 778 | /**************************************************************** |
| 779 | * kaweth_start_xmit |
| 780 | ****************************************************************/ |
| 781 | static int kaweth_start_xmit(struct sk_buff *skb, struct net_device *net) |
| 782 | { |
| 783 | struct kaweth_device *kaweth = netdev_priv(net); |
| 784 | __le16 *private_header; |
| 785 | |
| 786 | int res; |
| 787 | |
| 788 | spin_lock(&kaweth->device_lock); |
| 789 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | kaweth_async_set_rx_mode(kaweth); |
| 791 | netif_stop_queue(net); |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 792 | if (IS_BLOCKED(kaweth->status)) { |
| 793 | goto skip; |
| 794 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | |
| 796 | /* We now decide whether we can put our special header into the sk_buff */ |
| 797 | if (skb_cloned(skb) || skb_headroom(skb) < 2) { |
| 798 | /* no such luck - we make our own */ |
| 799 | struct sk_buff *copied_skb; |
| 800 | copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC); |
| 801 | dev_kfree_skb_irq(skb); |
| 802 | skb = copied_skb; |
| 803 | if (!copied_skb) { |
| 804 | kaweth->stats.tx_errors++; |
| 805 | netif_start_queue(net); |
| 806 | spin_unlock(&kaweth->device_lock); |
| 807 | return 0; |
| 808 | } |
| 809 | } |
| 810 | |
| 811 | private_header = (__le16 *)__skb_push(skb, 2); |
| 812 | *private_header = cpu_to_le16(skb->len-2); |
| 813 | kaweth->tx_skb = skb; |
| 814 | |
| 815 | usb_fill_bulk_urb(kaweth->tx_urb, |
| 816 | kaweth->dev, |
| 817 | usb_sndbulkpipe(kaweth->dev, 2), |
| 818 | private_header, |
| 819 | skb->len, |
| 820 | kaweth_usb_transmit_complete, |
| 821 | kaweth); |
| 822 | kaweth->end = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | |
| 824 | if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC))) |
| 825 | { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 826 | warn("kaweth failed tx_urb %d", res); |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 827 | skip: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | kaweth->stats.tx_errors++; |
| 829 | |
| 830 | netif_start_queue(net); |
| 831 | dev_kfree_skb_irq(skb); |
| 832 | } |
| 833 | else |
| 834 | { |
| 835 | kaweth->stats.tx_packets++; |
| 836 | kaweth->stats.tx_bytes += skb->len; |
| 837 | net->trans_start = jiffies; |
| 838 | } |
| 839 | |
| 840 | spin_unlock(&kaweth->device_lock); |
| 841 | |
| 842 | return 0; |
| 843 | } |
| 844 | |
| 845 | /**************************************************************** |
| 846 | * kaweth_set_rx_mode |
| 847 | ****************************************************************/ |
| 848 | static void kaweth_set_rx_mode(struct net_device *net) |
| 849 | { |
| 850 | struct kaweth_device *kaweth = netdev_priv(net); |
| 851 | |
| 852 | __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED | |
| 853 | KAWETH_PACKET_FILTER_BROADCAST | |
| 854 | KAWETH_PACKET_FILTER_MULTICAST; |
| 855 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 856 | dbg("Setting Rx mode to %d", packet_filter_bitmap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | |
| 858 | netif_stop_queue(net); |
| 859 | |
| 860 | if (net->flags & IFF_PROMISC) { |
| 861 | packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS; |
| 862 | } |
| 863 | else if ((net->mc_count) || (net->flags & IFF_ALLMULTI)) { |
| 864 | packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST; |
| 865 | } |
| 866 | |
| 867 | kaweth->packet_filter_bitmap = packet_filter_bitmap; |
| 868 | netif_wake_queue(net); |
| 869 | } |
| 870 | |
| 871 | /**************************************************************** |
| 872 | * kaweth_async_set_rx_mode |
| 873 | ****************************************************************/ |
| 874 | static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth) |
| 875 | { |
| 876 | __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap; |
| 877 | kaweth->packet_filter_bitmap = 0; |
| 878 | if (packet_filter_bitmap == 0) |
| 879 | return; |
| 880 | |
| 881 | { |
| 882 | int result; |
| 883 | result = kaweth_control(kaweth, |
| 884 | usb_sndctrlpipe(kaweth->dev, 0), |
| 885 | KAWETH_COMMAND_SET_PACKET_FILTER, |
| 886 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 887 | packet_filter_bitmap, |
| 888 | 0, |
| 889 | (void *)&kaweth->scratch, |
| 890 | 0, |
| 891 | KAWETH_CONTROL_TIMEOUT); |
| 892 | |
| 893 | if(result < 0) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 894 | err("Failed to set Rx mode: %d", result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | } |
| 896 | else { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 897 | dbg("Set Rx mode to %d", packet_filter_bitmap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | } |
| 899 | } |
| 900 | } |
| 901 | |
| 902 | /**************************************************************** |
| 903 | * kaweth_netdev_stats |
| 904 | ****************************************************************/ |
| 905 | static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev) |
| 906 | { |
| 907 | struct kaweth_device *kaweth = netdev_priv(dev); |
| 908 | return &kaweth->stats; |
| 909 | } |
| 910 | |
| 911 | /**************************************************************** |
| 912 | * kaweth_tx_timeout |
| 913 | ****************************************************************/ |
| 914 | static void kaweth_tx_timeout(struct net_device *net) |
| 915 | { |
| 916 | struct kaweth_device *kaweth = netdev_priv(net); |
| 917 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 918 | warn("%s: Tx timed out. Resetting.", net->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | kaweth->stats.tx_errors++; |
| 920 | net->trans_start = jiffies; |
| 921 | |
| 922 | usb_unlink_urb(kaweth->tx_urb); |
| 923 | } |
| 924 | |
| 925 | /**************************************************************** |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 926 | * kaweth_suspend |
| 927 | ****************************************************************/ |
| 928 | static int kaweth_suspend(struct usb_interface *intf, pm_message_t message) |
| 929 | { |
| 930 | struct kaweth_device *kaweth = usb_get_intfdata(intf); |
| 931 | unsigned long flags; |
| 932 | |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 933 | dbg("Suspending device"); |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 934 | spin_lock_irqsave(&kaweth->device_lock, flags); |
| 935 | kaweth->status |= KAWETH_STATUS_SUSPENDING; |
| 936 | spin_unlock_irqrestore(&kaweth->device_lock, flags); |
| 937 | |
| 938 | kaweth_kill_urbs(kaweth); |
| 939 | return 0; |
| 940 | } |
| 941 | |
| 942 | /**************************************************************** |
| 943 | * kaweth_resume |
| 944 | ****************************************************************/ |
| 945 | static int kaweth_resume(struct usb_interface *intf) |
| 946 | { |
| 947 | struct kaweth_device *kaweth = usb_get_intfdata(intf); |
| 948 | unsigned long flags; |
| 949 | |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 950 | dbg("Resuming device"); |
Oliver Neukum | 1a2ea1d | 2006-10-03 10:30:52 +0200 | [diff] [blame] | 951 | spin_lock_irqsave(&kaweth->device_lock, flags); |
| 952 | kaweth->status &= ~KAWETH_STATUS_SUSPENDING; |
| 953 | spin_unlock_irqrestore(&kaweth->device_lock, flags); |
| 954 | |
| 955 | if (!kaweth->opened) |
| 956 | return 0; |
| 957 | kaweth_resubmit_rx_urb(kaweth, GFP_NOIO); |
| 958 | kaweth_resubmit_int_urb(kaweth, GFP_NOIO); |
| 959 | |
| 960 | return 0; |
| 961 | } |
| 962 | |
| 963 | /**************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | * kaweth_probe |
| 965 | ****************************************************************/ |
| 966 | static int kaweth_probe( |
| 967 | struct usb_interface *intf, |
| 968 | const struct usb_device_id *id /* from id_table */ |
| 969 | ) |
| 970 | { |
| 971 | struct usb_device *dev = interface_to_usbdev(intf); |
| 972 | struct kaweth_device *kaweth; |
| 973 | struct net_device *netdev; |
| 974 | const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| 975 | int result = 0; |
| 976 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 977 | dbg("Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | dev->devnum, |
| 979 | le16_to_cpu(dev->descriptor.idVendor), |
| 980 | le16_to_cpu(dev->descriptor.idProduct), |
| 981 | le16_to_cpu(dev->descriptor.bcdDevice)); |
| 982 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 983 | dbg("Device at %p", dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 985 | dbg("Descriptor length: %x type: %x", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | (int)dev->descriptor.bLength, |
| 987 | (int)dev->descriptor.bDescriptorType); |
| 988 | |
| 989 | netdev = alloc_etherdev(sizeof(*kaweth)); |
| 990 | if (!netdev) |
| 991 | return -ENOMEM; |
| 992 | |
| 993 | kaweth = netdev_priv(netdev); |
| 994 | kaweth->dev = dev; |
| 995 | kaweth->net = netdev; |
| 996 | |
| 997 | spin_lock_init(&kaweth->device_lock); |
| 998 | init_waitqueue_head(&kaweth->term_wait); |
| 999 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1000 | dbg("Resetting."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | |
| 1002 | kaweth_reset(kaweth); |
| 1003 | |
| 1004 | /* |
| 1005 | * If high byte of bcdDevice is nonzero, firmware is already |
| 1006 | * downloaded. Don't try to do it again, or we'll hang the device. |
| 1007 | */ |
| 1008 | |
| 1009 | if (le16_to_cpu(dev->descriptor.bcdDevice) >> 8) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1010 | info("Firmware present in device."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | } else { |
| 1012 | /* Download the firmware */ |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1013 | info("Downloading firmware..."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL); |
| 1015 | if ((result = kaweth_download_firmware(kaweth, |
| 1016 | kaweth_new_code, |
| 1017 | len_kaweth_new_code, |
| 1018 | 100, |
| 1019 | 2)) < 0) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1020 | err("Error downloading firmware (%d)", result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | goto err_fw; |
| 1022 | } |
| 1023 | |
| 1024 | if ((result = kaweth_download_firmware(kaweth, |
| 1025 | kaweth_new_code_fix, |
| 1026 | len_kaweth_new_code_fix, |
| 1027 | 100, |
| 1028 | 3)) < 0) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1029 | err("Error downloading firmware fix (%d)", result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | goto err_fw; |
| 1031 | } |
| 1032 | |
| 1033 | if ((result = kaweth_download_firmware(kaweth, |
| 1034 | kaweth_trigger_code, |
| 1035 | len_kaweth_trigger_code, |
| 1036 | 126, |
| 1037 | 2)) < 0) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1038 | err("Error downloading trigger code (%d)", result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | goto err_fw; |
| 1040 | |
| 1041 | } |
| 1042 | |
| 1043 | if ((result = kaweth_download_firmware(kaweth, |
| 1044 | kaweth_trigger_code_fix, |
| 1045 | len_kaweth_trigger_code_fix, |
| 1046 | 126, |
| 1047 | 3)) < 0) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1048 | err("Error downloading trigger code fix (%d)", result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | goto err_fw; |
| 1050 | } |
| 1051 | |
| 1052 | |
| 1053 | if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1054 | err("Error triggering firmware (%d)", result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | goto err_fw; |
| 1056 | } |
| 1057 | |
| 1058 | /* Device will now disappear for a moment... */ |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1059 | info("Firmware loaded. I'll be back..."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | err_fw: |
| 1061 | free_page((unsigned long)kaweth->firmware_buf); |
| 1062 | free_netdev(netdev); |
| 1063 | return -EIO; |
| 1064 | } |
| 1065 | |
| 1066 | result = kaweth_read_configuration(kaweth); |
| 1067 | |
| 1068 | if(result < 0) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1069 | err("Error reading configuration (%d), no net device created", result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | goto err_free_netdev; |
| 1071 | } |
| 1072 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1073 | info("Statistics collection: %x", kaweth->configuration.statistics_mask); |
| 1074 | info("Multicast filter limit: %x", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1)); |
| 1075 | info("MTU: %d", le16_to_cpu(kaweth->configuration.segment_size)); |
| 1076 | info("Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | (int)kaweth->configuration.hw_addr[0], |
| 1078 | (int)kaweth->configuration.hw_addr[1], |
| 1079 | (int)kaweth->configuration.hw_addr[2], |
| 1080 | (int)kaweth->configuration.hw_addr[3], |
| 1081 | (int)kaweth->configuration.hw_addr[4], |
| 1082 | (int)kaweth->configuration.hw_addr[5]); |
| 1083 | |
| 1084 | if(!memcmp(&kaweth->configuration.hw_addr, |
| 1085 | &bcast_addr, |
| 1086 | sizeof(bcast_addr))) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1087 | err("Firmware not functioning properly, no net device created"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | goto err_free_netdev; |
| 1089 | } |
| 1090 | |
| 1091 | if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1092 | dbg("Error setting URB size"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | goto err_free_netdev; |
| 1094 | } |
| 1095 | |
| 1096 | if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1097 | err("Error setting SOFS wait"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | goto err_free_netdev; |
| 1099 | } |
| 1100 | |
| 1101 | result = kaweth_set_receive_filter(kaweth, |
| 1102 | KAWETH_PACKET_FILTER_DIRECTED | |
| 1103 | KAWETH_PACKET_FILTER_BROADCAST | |
| 1104 | KAWETH_PACKET_FILTER_MULTICAST); |
| 1105 | |
| 1106 | if(result < 0) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1107 | err("Error setting receive filter"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | goto err_free_netdev; |
| 1109 | } |
| 1110 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1111 | dbg("Initializing net device."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 1113 | kaweth->intf = intf; |
| 1114 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1115 | kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 1116 | if (!kaweth->tx_urb) |
| 1117 | goto err_free_netdev; |
| 1118 | kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 1119 | if (!kaweth->rx_urb) |
| 1120 | goto err_only_tx; |
| 1121 | kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 1122 | if (!kaweth->irq_urb) |
| 1123 | goto err_tx_and_rx; |
| 1124 | |
| 1125 | kaweth->intbuffer = usb_buffer_alloc( kaweth->dev, |
| 1126 | INTBUFFERSIZE, |
| 1127 | GFP_KERNEL, |
| 1128 | &kaweth->intbufferhandle); |
| 1129 | if (!kaweth->intbuffer) |
| 1130 | goto err_tx_and_rx_and_irq; |
| 1131 | kaweth->rx_buf = usb_buffer_alloc( kaweth->dev, |
| 1132 | KAWETH_BUF_SIZE, |
| 1133 | GFP_KERNEL, |
| 1134 | &kaweth->rxbufferhandle); |
| 1135 | if (!kaweth->rx_buf) |
| 1136 | goto err_all_but_rxbuf; |
| 1137 | |
| 1138 | memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr)); |
| 1139 | memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr, |
| 1140 | sizeof(kaweth->configuration.hw_addr)); |
| 1141 | |
| 1142 | netdev->open = kaweth_open; |
| 1143 | netdev->stop = kaweth_close; |
| 1144 | |
| 1145 | netdev->watchdog_timeo = KAWETH_TX_TIMEOUT; |
| 1146 | netdev->tx_timeout = kaweth_tx_timeout; |
| 1147 | |
| 1148 | netdev->hard_start_xmit = kaweth_start_xmit; |
| 1149 | netdev->set_multicast_list = kaweth_set_rx_mode; |
| 1150 | netdev->get_stats = kaweth_netdev_stats; |
| 1151 | netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size); |
| 1152 | SET_ETHTOOL_OPS(netdev, &ops); |
| 1153 | |
| 1154 | /* kaweth is zeroed as part of alloc_netdev */ |
| 1155 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1156 | INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | |
| 1158 | SET_MODULE_OWNER(netdev); |
| 1159 | |
| 1160 | usb_set_intfdata(intf, kaweth); |
| 1161 | |
| 1162 | #if 0 |
| 1163 | // dma_supported() is deeply broken on almost all architectures |
| 1164 | if (dma_supported (&intf->dev, 0xffffffffffffffffULL)) |
| 1165 | kaweth->net->features |= NETIF_F_HIGHDMA; |
| 1166 | #endif |
| 1167 | |
| 1168 | SET_NETDEV_DEV(netdev, &intf->dev); |
| 1169 | if (register_netdev(netdev) != 0) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1170 | err("Error registering netdev."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | goto err_intfdata; |
| 1172 | } |
| 1173 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1174 | info("kaweth interface created at %s", kaweth->net->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1176 | dbg("Kaweth probe returning."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | |
| 1178 | return 0; |
| 1179 | |
| 1180 | err_intfdata: |
| 1181 | usb_set_intfdata(intf, NULL); |
| 1182 | usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); |
| 1183 | err_all_but_rxbuf: |
| 1184 | usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); |
| 1185 | err_tx_and_rx_and_irq: |
| 1186 | usb_free_urb(kaweth->irq_urb); |
| 1187 | err_tx_and_rx: |
| 1188 | usb_free_urb(kaweth->rx_urb); |
| 1189 | err_only_tx: |
| 1190 | usb_free_urb(kaweth->tx_urb); |
| 1191 | err_free_netdev: |
| 1192 | free_netdev(netdev); |
| 1193 | |
| 1194 | return -EIO; |
| 1195 | } |
| 1196 | |
| 1197 | /**************************************************************** |
| 1198 | * kaweth_disconnect |
| 1199 | ****************************************************************/ |
| 1200 | static void kaweth_disconnect(struct usb_interface *intf) |
| 1201 | { |
| 1202 | struct kaweth_device *kaweth = usb_get_intfdata(intf); |
| 1203 | struct net_device *netdev; |
| 1204 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1205 | info("Unregistering"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | |
| 1207 | usb_set_intfdata(intf, NULL); |
| 1208 | if (!kaweth) { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1209 | warn("unregistering non-existant device"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | return; |
| 1211 | } |
| 1212 | netdev = kaweth->net; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1214 | dbg("Unregistering net device"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | unregister_netdev(netdev); |
| 1216 | |
| 1217 | usb_free_urb(kaweth->rx_urb); |
| 1218 | usb_free_urb(kaweth->tx_urb); |
| 1219 | usb_free_urb(kaweth->irq_urb); |
| 1220 | |
| 1221 | usb_buffer_free(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); |
| 1222 | usb_buffer_free(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); |
| 1223 | |
| 1224 | free_netdev(netdev); |
| 1225 | } |
| 1226 | |
| 1227 | |
| 1228 | // FIXME this completion stuff is a modified clone of |
| 1229 | // an OLD version of some stuff in usb.c ... |
| 1230 | struct usb_api_data { |
| 1231 | wait_queue_head_t wqh; |
| 1232 | int done; |
| 1233 | }; |
| 1234 | |
| 1235 | /*-------------------------------------------------------------------* |
| 1236 | * completion handler for compatibility wrappers (sync control/bulk) * |
| 1237 | *-------------------------------------------------------------------*/ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1238 | static void usb_api_blocking_completion(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | { |
| 1240 | struct usb_api_data *awd = (struct usb_api_data *)urb->context; |
| 1241 | |
| 1242 | awd->done=1; |
| 1243 | wake_up(&awd->wqh); |
| 1244 | } |
| 1245 | |
| 1246 | /*-------------------------------------------------------------------* |
| 1247 | * COMPATIBILITY STUFF * |
| 1248 | *-------------------------------------------------------------------*/ |
| 1249 | |
| 1250 | // Starts urb and waits for completion or timeout |
| 1251 | static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length) |
| 1252 | { |
| 1253 | struct usb_api_data awd; |
| 1254 | int status; |
| 1255 | |
| 1256 | init_waitqueue_head(&awd.wqh); |
| 1257 | awd.done = 0; |
| 1258 | |
| 1259 | urb->context = &awd; |
| 1260 | status = usb_submit_urb(urb, GFP_NOIO); |
| 1261 | if (status) { |
| 1262 | // something went wrong |
| 1263 | usb_free_urb(urb); |
| 1264 | return status; |
| 1265 | } |
| 1266 | |
| 1267 | if (!wait_event_timeout(awd.wqh, awd.done, timeout)) { |
| 1268 | // timeout |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1269 | warn("usb_control/bulk_msg: timeout"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | usb_kill_urb(urb); // remove urb safely |
| 1271 | status = -ETIMEDOUT; |
| 1272 | } |
| 1273 | else { |
| 1274 | status = urb->status; |
| 1275 | } |
| 1276 | |
| 1277 | if (actual_length) { |
| 1278 | *actual_length = urb->actual_length; |
| 1279 | } |
| 1280 | |
| 1281 | usb_free_urb(urb); |
| 1282 | return status; |
| 1283 | } |
| 1284 | |
| 1285 | /*-------------------------------------------------------------------*/ |
| 1286 | // returns status (negative) or length (positive) |
| 1287 | static int kaweth_internal_control_msg(struct usb_device *usb_dev, |
| 1288 | unsigned int pipe, |
| 1289 | struct usb_ctrlrequest *cmd, void *data, |
| 1290 | int len, int timeout) |
| 1291 | { |
| 1292 | struct urb *urb; |
| 1293 | int retv; |
Oliver Neukum | b98b98f | 2007-01-16 09:47:12 +0100 | [diff] [blame] | 1294 | int length = 0; /* shut up GCC */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | |
| 1296 | urb = usb_alloc_urb(0, GFP_NOIO); |
| 1297 | if (!urb) |
| 1298 | return -ENOMEM; |
| 1299 | |
| 1300 | usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data, |
| 1301 | len, usb_api_blocking_completion, NULL); |
| 1302 | |
| 1303 | retv = usb_start_wait_urb(urb, timeout, &length); |
| 1304 | if (retv < 0) { |
| 1305 | return retv; |
| 1306 | } |
| 1307 | else { |
| 1308 | return length; |
| 1309 | } |
| 1310 | } |
| 1311 | |
| 1312 | |
| 1313 | /**************************************************************** |
| 1314 | * kaweth_init |
| 1315 | ****************************************************************/ |
| 1316 | static int __init kaweth_init(void) |
| 1317 | { |
Oliver Neukum | fbe2baf | 2006-09-28 23:36:04 +0200 | [diff] [blame] | 1318 | dbg("Driver loading"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | return usb_register(&kaweth_driver); |
| 1320 | } |
| 1321 | |
| 1322 | /**************************************************************** |
| 1323 | * kaweth_exit |
| 1324 | ****************************************************************/ |
| 1325 | static void __exit kaweth_exit(void) |
| 1326 | { |
| 1327 | usb_deregister(&kaweth_driver); |
| 1328 | } |
| 1329 | |
| 1330 | module_init(kaweth_init); |
| 1331 | module_exit(kaweth_exit); |
| 1332 | |
| 1333 | |
| 1334 | |
| 1335 | |
| 1336 | |
| 1337 | |
| 1338 | |
| 1339 | |
| 1340 | |