| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /**************************************************************** |
| 3 | * |
| 4 | * kaweth.c - driver for KL5KUSB101 based USB->Ethernet |
| 5 | * |
| 6 | * (c) 2000 Interlan Communications |
| 7 | * (c) 2000 Stephane Alnet |
| 8 | * (C) 2001 Brad Hards |
| 9 | * (C) 2002 Oliver Neukum |
| 10 | * |
| 11 | * Original author: The Zapman <zapman@interlan.net> |
| 12 | * Inspired by, and much credit goes to Michael Rothwell |
| 13 | * <rothwell@interlan.net> for the test equipment, help, and patience |
| 14 | * Based off of (and with thanks to) Petko Manolov's pegaus.c driver. |
| 15 | * Also many thanks to Joel Silverman and Ed Surprenant at Kawasaki |
| 16 | * for providing the firmware and driver resources. |
| 17 | * |
| 18 | ****************************************************************/ |
| 19 | |
| 20 | /* TODO: |
| 21 | * Develop test procedures for USB net interfaces |
| 22 | * Run test procedures |
| 23 | * Fix bugs from previous two steps |
| 24 | * Snoop other OSs for any tricks we're not doing |
| 25 | * Reduce arbitrary timeouts |
| 26 | * Smart multicast support |
| 27 | * Temporary MAC change support |
| 28 | * Tunable SOFs parameter - ioctl()? |
| 29 | * Ethernet stats collection |
| 30 | * Code formatting improvements |
| 31 | */ |
| 32 | |
| 33 | #include <linux/module.h> |
| 34 | #include <linux/slab.h> |
| 35 | #include <linux/string.h> |
| 36 | #include <linux/delay.h> |
| 37 | #include <linux/netdevice.h> |
| 38 | #include <linux/etherdevice.h> |
| 39 | #include <linux/usb.h> |
| 40 | #include <linux/types.h> |
| 41 | #include <linux/ethtool.h> |
| 42 | #include <linux/dma-mapping.h> |
| 43 | #include <linux/wait.h> |
| 44 | #include <linux/firmware.h> |
| 45 | #include <linux/uaccess.h> |
| 46 | #include <asm/byteorder.h> |
| 47 | |
| 48 | #undef DEBUG |
| 49 | |
| 50 | #define KAWETH_MTU 1514 |
| 51 | #define KAWETH_BUF_SIZE 1664 |
| 52 | #define KAWETH_TX_TIMEOUT (5 * HZ) |
| 53 | #define KAWETH_SCRATCH_SIZE 32 |
| 54 | #define KAWETH_FIRMWARE_BUF_SIZE 4096 |
| 55 | #define KAWETH_CONTROL_TIMEOUT (30000) |
| 56 | |
| 57 | #define KAWETH_STATUS_BROKEN 0x0000001 |
| 58 | #define KAWETH_STATUS_CLOSING 0x0000002 |
| 59 | #define KAWETH_STATUS_SUSPENDING 0x0000004 |
| 60 | |
| 61 | #define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING) |
| 62 | |
| 63 | #define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01 |
| 64 | #define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02 |
| 65 | #define KAWETH_PACKET_FILTER_DIRECTED 0x04 |
| 66 | #define KAWETH_PACKET_FILTER_BROADCAST 0x08 |
| 67 | #define KAWETH_PACKET_FILTER_MULTICAST 0x10 |
| 68 | |
| 69 | /* Table 7 */ |
| 70 | #define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00 |
| 71 | #define KAWETH_COMMAND_MULTICAST_FILTERS 0x01 |
| 72 | #define KAWETH_COMMAND_SET_PACKET_FILTER 0x02 |
| 73 | #define KAWETH_COMMAND_STATISTICS 0x03 |
| 74 | #define KAWETH_COMMAND_SET_TEMP_MAC 0x06 |
| 75 | #define KAWETH_COMMAND_GET_TEMP_MAC 0x07 |
| 76 | #define KAWETH_COMMAND_SET_URB_SIZE 0x08 |
| 77 | #define KAWETH_COMMAND_SET_SOFS_WAIT 0x09 |
| 78 | #define KAWETH_COMMAND_SCAN 0xFF |
| 79 | |
| 80 | #define KAWETH_SOFS_TO_WAIT 0x05 |
| 81 | |
| 82 | #define INTBUFFERSIZE 4 |
| 83 | |
| 84 | #define STATE_OFFSET 0 |
| 85 | #define STATE_MASK 0x40 |
| 86 | #define STATE_SHIFT 5 |
| 87 | |
| 88 | #define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED) |
| 89 | |
| 90 | |
| 91 | 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>"); |
| 92 | MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver"); |
| 93 | MODULE_LICENSE("GPL"); |
| 94 | MODULE_FIRMWARE("kaweth/new_code.bin"); |
| 95 | MODULE_FIRMWARE("kaweth/new_code_fix.bin"); |
| 96 | MODULE_FIRMWARE("kaweth/trigger_code.bin"); |
| 97 | MODULE_FIRMWARE("kaweth/trigger_code_fix.bin"); |
| 98 | |
| 99 | static const char driver_name[] = "kaweth"; |
| 100 | |
| 101 | static int kaweth_probe( |
| 102 | struct usb_interface *intf, |
| 103 | const struct usb_device_id *id /* from id_table */ |
| 104 | ); |
| 105 | static void kaweth_disconnect(struct usb_interface *intf); |
| 106 | static int kaweth_suspend(struct usb_interface *intf, pm_message_t message); |
| 107 | static int kaweth_resume(struct usb_interface *intf); |
| 108 | |
| 109 | /**************************************************************** |
| 110 | * usb_device_id |
| 111 | ****************************************************************/ |
| 112 | static const struct usb_device_id usb_klsi_table[] = { |
| 113 | { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */ |
| 114 | { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */ |
| 115 | { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */ |
| 116 | { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */ |
| 117 | { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */ |
| 118 | { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */ |
| 119 | { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */ |
| 120 | { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */ |
| 121 | { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */ |
| 122 | { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */ |
| 123 | { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */ |
| 124 | { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */ |
| 125 | { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */ |
| 126 | { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */ |
| 127 | { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */ |
| 128 | { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */ |
| 129 | { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */ |
| 130 | { USB_DEVICE(0x07c9, 0xb010) }, /* Allied Telesyn AT-USB10 USB Ethernet Adapter */ |
| 131 | { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */ |
| 132 | { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */ |
| 133 | { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */ |
| 134 | { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */ |
| 135 | { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */ |
| 136 | { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */ |
| 137 | { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */ |
| 138 | { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */ |
| 139 | { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */ |
| 140 | { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */ |
| 141 | { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */ |
| 142 | { USB_DEVICE(0x1485, 0x0002) }, /* Psion Dacom Gold Port Ethernet */ |
| 143 | { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */ |
| 144 | { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */ |
| 145 | { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */ |
| 146 | { USB_DEVICE(0x1668, 0x0323) }, /* Actiontec USB Ethernet */ |
| 147 | { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */ |
| 148 | {} /* Null terminator */ |
| 149 | }; |
| 150 | |
| 151 | MODULE_DEVICE_TABLE (usb, usb_klsi_table); |
| 152 | |
| 153 | /**************************************************************** |
| 154 | * kaweth_driver |
| 155 | ****************************************************************/ |
| 156 | static struct usb_driver kaweth_driver = { |
| 157 | .name = driver_name, |
| 158 | .probe = kaweth_probe, |
| 159 | .disconnect = kaweth_disconnect, |
| 160 | .suspend = kaweth_suspend, |
| 161 | .resume = kaweth_resume, |
| 162 | .id_table = usb_klsi_table, |
| 163 | .supports_autosuspend = 1, |
| 164 | .disable_hub_initiated_lpm = 1, |
| 165 | }; |
| 166 | |
| 167 | typedef __u8 eth_addr_t[6]; |
| 168 | |
| 169 | /**************************************************************** |
| 170 | * usb_eth_dev |
| 171 | ****************************************************************/ |
| 172 | struct usb_eth_dev { |
| 173 | char *name; |
| 174 | __u16 vendor; |
| 175 | __u16 device; |
| 176 | void *pdata; |
| 177 | }; |
| 178 | |
| 179 | /**************************************************************** |
| 180 | * kaweth_ethernet_configuration |
| 181 | * Refer Table 8 |
| 182 | ****************************************************************/ |
| 183 | struct kaweth_ethernet_configuration |
| 184 | { |
| 185 | __u8 size; |
| 186 | __u8 reserved1; |
| 187 | __u8 reserved2; |
| 188 | eth_addr_t hw_addr; |
| 189 | __u32 statistics_mask; |
| 190 | __le16 segment_size; |
| 191 | __u16 max_multicast_filters; |
| 192 | __u8 reserved3; |
| 193 | } __packed; |
| 194 | |
| 195 | /**************************************************************** |
| 196 | * kaweth_device |
| 197 | ****************************************************************/ |
| 198 | struct kaweth_device |
| 199 | { |
| 200 | spinlock_t device_lock; |
| 201 | |
| 202 | __u32 status; |
| 203 | int end; |
| 204 | int suspend_lowmem_rx; |
| 205 | int suspend_lowmem_ctrl; |
| 206 | int linkstate; |
| 207 | int opened; |
| 208 | struct delayed_work lowmem_work; |
| 209 | |
| 210 | struct usb_device *dev; |
| 211 | struct usb_interface *intf; |
| 212 | struct net_device *net; |
| 213 | wait_queue_head_t term_wait; |
| 214 | |
| 215 | struct urb *rx_urb; |
| 216 | struct urb *tx_urb; |
| 217 | struct urb *irq_urb; |
| 218 | |
| 219 | dma_addr_t intbufferhandle; |
| 220 | __u8 *intbuffer; |
| 221 | dma_addr_t rxbufferhandle; |
| 222 | __u8 *rx_buf; |
| 223 | |
| 224 | |
| 225 | struct sk_buff *tx_skb; |
| 226 | |
| 227 | __u8 *firmware_buf; |
| 228 | __u8 scratch[KAWETH_SCRATCH_SIZE]; |
| 229 | __u16 packet_filter_bitmap; |
| 230 | |
| 231 | struct kaweth_ethernet_configuration configuration; |
| 232 | }; |
| 233 | |
| 234 | /**************************************************************** |
| 235 | * kaweth_read_configuration |
| 236 | ****************************************************************/ |
| 237 | static int kaweth_read_configuration(struct kaweth_device *kaweth) |
| 238 | { |
| 239 | return usb_control_msg(kaweth->dev, usb_rcvctrlpipe(kaweth->dev, 0), |
| 240 | KAWETH_COMMAND_GET_ETHERNET_DESC, |
| 241 | USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE, |
| 242 | 0, 0, |
| 243 | &kaweth->configuration, |
| 244 | sizeof(kaweth->configuration), |
| 245 | KAWETH_CONTROL_TIMEOUT); |
| 246 | } |
| 247 | |
| 248 | /**************************************************************** |
| 249 | * kaweth_set_urb_size |
| 250 | ****************************************************************/ |
| 251 | static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size) |
| 252 | { |
| 253 | netdev_dbg(kaweth->net, "Setting URB size to %d\n", (unsigned)urb_size); |
| 254 | |
| 255 | return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0), |
| 256 | KAWETH_COMMAND_SET_URB_SIZE, |
| 257 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 258 | urb_size, 0, |
| 259 | &kaweth->scratch, 0, |
| 260 | KAWETH_CONTROL_TIMEOUT); |
| 261 | } |
| 262 | |
| 263 | /**************************************************************** |
| 264 | * kaweth_set_sofs_wait |
| 265 | ****************************************************************/ |
| 266 | static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait) |
| 267 | { |
| 268 | netdev_dbg(kaweth->net, "Set SOFS wait to %d\n", (unsigned)sofs_wait); |
| 269 | |
| 270 | return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0), |
| 271 | KAWETH_COMMAND_SET_SOFS_WAIT, |
| 272 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 273 | sofs_wait, 0, |
| 274 | &kaweth->scratch, 0, |
| 275 | KAWETH_CONTROL_TIMEOUT); |
| 276 | } |
| 277 | |
| 278 | /**************************************************************** |
| 279 | * kaweth_set_receive_filter |
| 280 | ****************************************************************/ |
| 281 | static int kaweth_set_receive_filter(struct kaweth_device *kaweth, |
| 282 | __u16 receive_filter) |
| 283 | { |
| 284 | netdev_dbg(kaweth->net, "Set receive filter to %d\n", |
| 285 | (unsigned)receive_filter); |
| 286 | |
| 287 | return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0), |
| 288 | KAWETH_COMMAND_SET_PACKET_FILTER, |
| 289 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 290 | receive_filter, 0, |
| 291 | &kaweth->scratch, 0, |
| 292 | KAWETH_CONTROL_TIMEOUT); |
| 293 | } |
| 294 | |
| 295 | /**************************************************************** |
| 296 | * kaweth_download_firmware |
| 297 | ****************************************************************/ |
| 298 | static int kaweth_download_firmware(struct kaweth_device *kaweth, |
| 299 | const char *fwname, |
| 300 | __u8 interrupt, |
| 301 | __u8 type) |
| 302 | { |
| 303 | const struct firmware *fw; |
| 304 | int data_len; |
| 305 | int ret; |
| 306 | |
| 307 | ret = request_firmware(&fw, fwname, &kaweth->dev->dev); |
| 308 | if (ret) { |
| 309 | dev_err(&kaweth->intf->dev, "Firmware request failed\n"); |
| 310 | return ret; |
| 311 | } |
| 312 | |
| 313 | if (fw->size > KAWETH_FIRMWARE_BUF_SIZE) { |
| 314 | dev_err(&kaweth->intf->dev, "Firmware too big: %zu\n", |
| 315 | fw->size); |
| 316 | release_firmware(fw); |
| 317 | return -ENOSPC; |
| 318 | } |
| 319 | data_len = fw->size; |
| 320 | memcpy(kaweth->firmware_buf, fw->data, fw->size); |
| 321 | |
| 322 | release_firmware(fw); |
| 323 | |
| 324 | kaweth->firmware_buf[2] = (data_len & 0xFF) - 7; |
| 325 | kaweth->firmware_buf[3] = data_len >> 8; |
| 326 | kaweth->firmware_buf[4] = type; |
| 327 | kaweth->firmware_buf[5] = interrupt; |
| 328 | |
| 329 | netdev_dbg(kaweth->net, "High: %i, Low:%i\n", kaweth->firmware_buf[3], |
| 330 | kaweth->firmware_buf[2]); |
| 331 | |
| 332 | netdev_dbg(kaweth->net, |
| 333 | "Downloading firmware at %p to kaweth device at %p\n", |
| 334 | kaweth->firmware_buf, kaweth); |
| 335 | netdev_dbg(kaweth->net, "Firmware length: %d\n", data_len); |
| 336 | |
| 337 | return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0), |
| 338 | KAWETH_COMMAND_SCAN, |
| 339 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 340 | 0, 0, |
| 341 | kaweth->firmware_buf, data_len, |
| 342 | KAWETH_CONTROL_TIMEOUT); |
| 343 | } |
| 344 | |
| 345 | /**************************************************************** |
| 346 | * kaweth_trigger_firmware |
| 347 | ****************************************************************/ |
| 348 | static int kaweth_trigger_firmware(struct kaweth_device *kaweth, |
| 349 | __u8 interrupt) |
| 350 | { |
| 351 | kaweth->firmware_buf[0] = 0xB6; |
| 352 | kaweth->firmware_buf[1] = 0xC3; |
| 353 | kaweth->firmware_buf[2] = 0x01; |
| 354 | kaweth->firmware_buf[3] = 0x00; |
| 355 | kaweth->firmware_buf[4] = 0x06; |
| 356 | kaweth->firmware_buf[5] = interrupt; |
| 357 | kaweth->firmware_buf[6] = 0x00; |
| 358 | kaweth->firmware_buf[7] = 0x00; |
| 359 | |
| 360 | return usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0), |
| 361 | KAWETH_COMMAND_SCAN, |
| 362 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 363 | 0, 0, |
| 364 | (void *)kaweth->firmware_buf, 8, |
| 365 | KAWETH_CONTROL_TIMEOUT); |
| 366 | } |
| 367 | |
| 368 | /**************************************************************** |
| 369 | * kaweth_reset |
| 370 | ****************************************************************/ |
| 371 | static int kaweth_reset(struct kaweth_device *kaweth) |
| 372 | { |
| 373 | int result; |
| 374 | |
| 375 | result = usb_reset_configuration(kaweth->dev); |
| 376 | mdelay(10); |
| 377 | |
| 378 | netdev_dbg(kaweth->net, "kaweth_reset() returns %d.\n", result); |
| 379 | |
| 380 | return result; |
| 381 | } |
| 382 | |
| 383 | static void kaweth_usb_receive(struct urb *); |
| 384 | static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t); |
| 385 | |
| 386 | /**************************************************************** |
| 387 | int_callback |
| 388 | *****************************************************************/ |
| 389 | |
| 390 | static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf) |
| 391 | { |
| 392 | int status; |
| 393 | |
| 394 | status = usb_submit_urb (kaweth->irq_urb, mf); |
| 395 | if (unlikely(status == -ENOMEM)) { |
| 396 | kaweth->suspend_lowmem_ctrl = 1; |
| 397 | schedule_delayed_work(&kaweth->lowmem_work, HZ/4); |
| 398 | } else { |
| 399 | kaweth->suspend_lowmem_ctrl = 0; |
| 400 | } |
| 401 | |
| 402 | if (status) |
| 403 | dev_err(&kaweth->intf->dev, |
| 404 | "can't resubmit intr, %s-%s, status %d\n", |
| 405 | kaweth->dev->bus->bus_name, |
| 406 | kaweth->dev->devpath, status); |
| 407 | } |
| 408 | |
| 409 | static void int_callback(struct urb *u) |
| 410 | { |
| 411 | struct kaweth_device *kaweth = u->context; |
| 412 | int act_state; |
| 413 | int status = u->status; |
| 414 | |
| 415 | switch (status) { |
| 416 | case 0: /* success */ |
| 417 | break; |
| 418 | case -ECONNRESET: /* unlink */ |
| 419 | case -ENOENT: |
| 420 | case -ESHUTDOWN: |
| 421 | return; |
| 422 | /* -EPIPE: should clear the halt */ |
| 423 | default: /* error */ |
| 424 | goto resubmit; |
| 425 | } |
| 426 | |
| 427 | /* we check the link state to report changes */ |
| 428 | if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) { |
| 429 | if (act_state) |
| 430 | netif_carrier_on(kaweth->net); |
| 431 | else |
| 432 | netif_carrier_off(kaweth->net); |
| 433 | |
| 434 | kaweth->linkstate = act_state; |
| 435 | } |
| 436 | resubmit: |
| 437 | kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC); |
| 438 | } |
| 439 | |
| 440 | static void kaweth_resubmit_tl(struct work_struct *work) |
| 441 | { |
| 442 | struct kaweth_device *kaweth = |
| 443 | container_of(work, struct kaweth_device, lowmem_work.work); |
| 444 | |
| 445 | if (IS_BLOCKED(kaweth->status)) |
| 446 | return; |
| 447 | |
| 448 | if (kaweth->suspend_lowmem_rx) |
| 449 | kaweth_resubmit_rx_urb(kaweth, GFP_NOIO); |
| 450 | |
| 451 | if (kaweth->suspend_lowmem_ctrl) |
| 452 | kaweth_resubmit_int_urb(kaweth, GFP_NOIO); |
| 453 | } |
| 454 | |
| 455 | |
| 456 | /**************************************************************** |
| 457 | * kaweth_resubmit_rx_urb |
| 458 | ****************************************************************/ |
| 459 | static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth, |
| 460 | gfp_t mem_flags) |
| 461 | { |
| 462 | int result; |
| 463 | |
| 464 | usb_fill_bulk_urb(kaweth->rx_urb, |
| 465 | kaweth->dev, |
| 466 | usb_rcvbulkpipe(kaweth->dev, 1), |
| 467 | kaweth->rx_buf, |
| 468 | KAWETH_BUF_SIZE, |
| 469 | kaweth_usb_receive, |
| 470 | kaweth); |
| 471 | kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| 472 | kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle; |
| 473 | |
| 474 | if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) { |
| 475 | if (result == -ENOMEM) { |
| 476 | kaweth->suspend_lowmem_rx = 1; |
| 477 | schedule_delayed_work(&kaweth->lowmem_work, HZ/4); |
| 478 | } |
| 479 | dev_err(&kaweth->intf->dev, "resubmitting rx_urb %d failed\n", |
| 480 | result); |
| 481 | } else { |
| 482 | kaweth->suspend_lowmem_rx = 0; |
| 483 | } |
| 484 | |
| 485 | return result; |
| 486 | } |
| 487 | |
| 488 | static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth, |
| 489 | bool may_sleep); |
| 490 | |
| 491 | /**************************************************************** |
| 492 | * kaweth_usb_receive |
| 493 | ****************************************************************/ |
| 494 | static void kaweth_usb_receive(struct urb *urb) |
| 495 | { |
| 496 | struct device *dev = &urb->dev->dev; |
| 497 | struct kaweth_device *kaweth = urb->context; |
| 498 | struct net_device *net = kaweth->net; |
| 499 | int status = urb->status; |
| 500 | unsigned long flags; |
| 501 | int count = urb->actual_length; |
| 502 | int count2 = urb->transfer_buffer_length; |
| 503 | |
| 504 | __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf); |
| 505 | |
| 506 | struct sk_buff *skb; |
| 507 | |
| 508 | if (unlikely(status == -EPIPE)) { |
| 509 | net->stats.rx_errors++; |
| 510 | kaweth->end = 1; |
| 511 | wake_up(&kaweth->term_wait); |
| 512 | dev_dbg(dev, "Status was -EPIPE.\n"); |
| 513 | return; |
| 514 | } |
| 515 | if (unlikely(status == -ECONNRESET || status == -ESHUTDOWN)) { |
| 516 | /* we are killed - set a flag and wake the disconnect handler */ |
| 517 | kaweth->end = 1; |
| 518 | wake_up(&kaweth->term_wait); |
| 519 | dev_dbg(dev, "Status was -ECONNRESET or -ESHUTDOWN.\n"); |
| 520 | return; |
| 521 | } |
| 522 | if (unlikely(status == -EPROTO || status == -ETIME || |
| 523 | status == -EILSEQ)) { |
| 524 | net->stats.rx_errors++; |
| 525 | dev_dbg(dev, "Status was -EPROTO, -ETIME, or -EILSEQ.\n"); |
| 526 | return; |
| 527 | } |
| 528 | if (unlikely(status == -EOVERFLOW)) { |
| 529 | net->stats.rx_errors++; |
| 530 | dev_dbg(dev, "Status was -EOVERFLOW.\n"); |
| 531 | } |
| 532 | spin_lock_irqsave(&kaweth->device_lock, flags); |
| 533 | if (IS_BLOCKED(kaweth->status)) { |
| 534 | spin_unlock_irqrestore(&kaweth->device_lock, flags); |
| 535 | return; |
| 536 | } |
| 537 | spin_unlock_irqrestore(&kaweth->device_lock, flags); |
| 538 | |
| 539 | if(status && status != -EREMOTEIO && count != 1) { |
| 540 | dev_err(&kaweth->intf->dev, |
| 541 | "%s RX status: %d count: %d packet_len: %d\n", |
| 542 | net->name, status, count, (int)pkt_len); |
| 543 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); |
| 544 | return; |
| 545 | } |
| 546 | |
| 547 | if(kaweth->net && (count > 2)) { |
| 548 | if(pkt_len > (count - 2)) { |
| 549 | dev_err(&kaweth->intf->dev, |
| 550 | "Packet length too long for USB frame (pkt_len: %x, count: %x)\n", |
| 551 | pkt_len, count); |
| 552 | dev_err(&kaweth->intf->dev, "Packet len & 2047: %x\n", |
| 553 | pkt_len & 2047); |
| 554 | dev_err(&kaweth->intf->dev, "Count 2: %x\n", count2); |
| 555 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); |
| 556 | return; |
| 557 | } |
| 558 | |
| 559 | if(!(skb = dev_alloc_skb(pkt_len+2))) { |
| 560 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); |
| 561 | return; |
| 562 | } |
| 563 | |
| 564 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
| 565 | |
| 566 | skb_copy_to_linear_data(skb, kaweth->rx_buf + 2, pkt_len); |
| 567 | |
| 568 | skb_put(skb, pkt_len); |
| 569 | |
| 570 | skb->protocol = eth_type_trans(skb, net); |
| 571 | |
| 572 | netif_rx(skb); |
| 573 | |
| 574 | net->stats.rx_packets++; |
| 575 | net->stats.rx_bytes += pkt_len; |
| 576 | } |
| 577 | |
| 578 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); |
| 579 | } |
| 580 | |
| 581 | /**************************************************************** |
| 582 | * kaweth_open |
| 583 | ****************************************************************/ |
| 584 | static int kaweth_open(struct net_device *net) |
| 585 | { |
| 586 | struct kaweth_device *kaweth = netdev_priv(net); |
| 587 | int res; |
| 588 | |
| 589 | res = usb_autopm_get_interface(kaweth->intf); |
| 590 | if (res) { |
| 591 | dev_err(&kaweth->intf->dev, "Interface cannot be resumed.\n"); |
| 592 | return -EIO; |
| 593 | } |
| 594 | res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL); |
| 595 | if (res) |
| 596 | goto err_out; |
| 597 | |
| 598 | usb_fill_int_urb( |
| 599 | kaweth->irq_urb, |
| 600 | kaweth->dev, |
| 601 | usb_rcvintpipe(kaweth->dev, 3), |
| 602 | kaweth->intbuffer, |
| 603 | INTBUFFERSIZE, |
| 604 | int_callback, |
| 605 | kaweth, |
| 606 | 250); /* overriding the descriptor */ |
| 607 | kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle; |
| 608 | kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| 609 | |
| 610 | res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL); |
| 611 | if (res) { |
| 612 | usb_kill_urb(kaweth->rx_urb); |
| 613 | goto err_out; |
| 614 | } |
| 615 | kaweth->opened = 1; |
| 616 | |
| 617 | netif_start_queue(net); |
| 618 | |
| 619 | kaweth_async_set_rx_mode(kaweth, true); |
| 620 | return 0; |
| 621 | |
| 622 | err_out: |
| 623 | usb_autopm_put_interface(kaweth->intf); |
| 624 | return -EIO; |
| 625 | } |
| 626 | |
| 627 | /**************************************************************** |
| 628 | * kaweth_kill_urbs |
| 629 | ****************************************************************/ |
| 630 | static void kaweth_kill_urbs(struct kaweth_device *kaweth) |
| 631 | { |
| 632 | usb_kill_urb(kaweth->irq_urb); |
| 633 | usb_kill_urb(kaweth->rx_urb); |
| 634 | usb_kill_urb(kaweth->tx_urb); |
| 635 | |
| 636 | cancel_delayed_work_sync(&kaweth->lowmem_work); |
| 637 | |
| 638 | /* a scheduled work may have resubmitted, |
| 639 | we hit them again */ |
| 640 | usb_kill_urb(kaweth->irq_urb); |
| 641 | usb_kill_urb(kaweth->rx_urb); |
| 642 | } |
| 643 | |
| 644 | /**************************************************************** |
| 645 | * kaweth_close |
| 646 | ****************************************************************/ |
| 647 | static int kaweth_close(struct net_device *net) |
| 648 | { |
| 649 | struct kaweth_device *kaweth = netdev_priv(net); |
| 650 | |
| 651 | netif_stop_queue(net); |
| 652 | kaweth->opened = 0; |
| 653 | |
| 654 | kaweth->status |= KAWETH_STATUS_CLOSING; |
| 655 | |
| 656 | kaweth_kill_urbs(kaweth); |
| 657 | |
| 658 | kaweth->status &= ~KAWETH_STATUS_CLOSING; |
| 659 | |
| 660 | usb_autopm_put_interface(kaweth->intf); |
| 661 | |
| 662 | return 0; |
| 663 | } |
| 664 | |
| 665 | static u32 kaweth_get_link(struct net_device *dev) |
| 666 | { |
| 667 | struct kaweth_device *kaweth = netdev_priv(dev); |
| 668 | |
| 669 | return kaweth->linkstate; |
| 670 | } |
| 671 | |
| 672 | static const struct ethtool_ops ops = { |
| 673 | .get_link = kaweth_get_link |
| 674 | }; |
| 675 | |
| 676 | /**************************************************************** |
| 677 | * kaweth_usb_transmit_complete |
| 678 | ****************************************************************/ |
| 679 | static void kaweth_usb_transmit_complete(struct urb *urb) |
| 680 | { |
| 681 | struct kaweth_device *kaweth = urb->context; |
| 682 | struct sk_buff *skb = kaweth->tx_skb; |
| 683 | int status = urb->status; |
| 684 | |
| 685 | if (unlikely(status != 0)) |
| 686 | if (status != -ENOENT) |
| 687 | dev_dbg(&urb->dev->dev, "%s: TX status %d.\n", |
| 688 | kaweth->net->name, status); |
| 689 | |
| 690 | netif_wake_queue(kaweth->net); |
| 691 | dev_kfree_skb_irq(skb); |
| 692 | } |
| 693 | |
| 694 | /**************************************************************** |
| 695 | * kaweth_start_xmit |
| 696 | ****************************************************************/ |
| 697 | static netdev_tx_t kaweth_start_xmit(struct sk_buff *skb, |
| 698 | struct net_device *net) |
| 699 | { |
| 700 | struct kaweth_device *kaweth = netdev_priv(net); |
| 701 | __le16 *private_header; |
| 702 | |
| 703 | int res; |
| 704 | |
| 705 | spin_lock_irq(&kaweth->device_lock); |
| 706 | |
| 707 | kaweth_async_set_rx_mode(kaweth, false); |
| 708 | netif_stop_queue(net); |
| 709 | if (IS_BLOCKED(kaweth->status)) { |
| 710 | goto skip; |
| 711 | } |
| 712 | |
| 713 | /* We now decide whether we can put our special header into the sk_buff */ |
| 714 | if (skb_cow_head(skb, 2)) { |
| 715 | net->stats.tx_errors++; |
| 716 | netif_start_queue(net); |
| 717 | spin_unlock_irq(&kaweth->device_lock); |
| 718 | dev_kfree_skb_any(skb); |
| 719 | return NETDEV_TX_OK; |
| 720 | } |
| 721 | |
| 722 | private_header = __skb_push(skb, 2); |
| 723 | *private_header = cpu_to_le16(skb->len-2); |
| 724 | kaweth->tx_skb = skb; |
| 725 | |
| 726 | usb_fill_bulk_urb(kaweth->tx_urb, |
| 727 | kaweth->dev, |
| 728 | usb_sndbulkpipe(kaweth->dev, 2), |
| 729 | private_header, |
| 730 | skb->len, |
| 731 | kaweth_usb_transmit_complete, |
| 732 | kaweth); |
| 733 | kaweth->end = 0; |
| 734 | |
| 735 | if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC))) |
| 736 | { |
| 737 | dev_warn(&net->dev, "kaweth failed tx_urb %d\n", res); |
| 738 | skip: |
| 739 | net->stats.tx_errors++; |
| 740 | |
| 741 | netif_start_queue(net); |
| 742 | dev_kfree_skb_irq(skb); |
| 743 | } |
| 744 | else |
| 745 | { |
| 746 | net->stats.tx_packets++; |
| 747 | net->stats.tx_bytes += skb->len; |
| 748 | } |
| 749 | |
| 750 | spin_unlock_irq(&kaweth->device_lock); |
| 751 | |
| 752 | return NETDEV_TX_OK; |
| 753 | } |
| 754 | |
| 755 | /**************************************************************** |
| 756 | * kaweth_set_rx_mode |
| 757 | ****************************************************************/ |
| 758 | static void kaweth_set_rx_mode(struct net_device *net) |
| 759 | { |
| 760 | struct kaweth_device *kaweth = netdev_priv(net); |
| 761 | |
| 762 | __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED | |
| 763 | KAWETH_PACKET_FILTER_BROADCAST | |
| 764 | KAWETH_PACKET_FILTER_MULTICAST; |
| 765 | |
| 766 | netdev_dbg(net, "Setting Rx mode to %d\n", packet_filter_bitmap); |
| 767 | |
| 768 | netif_stop_queue(net); |
| 769 | |
| 770 | if (net->flags & IFF_PROMISC) { |
| 771 | packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS; |
| 772 | } |
| 773 | else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) { |
| 774 | packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST; |
| 775 | } |
| 776 | |
| 777 | kaweth->packet_filter_bitmap = packet_filter_bitmap; |
| 778 | netif_wake_queue(net); |
| 779 | } |
| 780 | |
| 781 | /**************************************************************** |
| 782 | * kaweth_async_set_rx_mode |
| 783 | ****************************************************************/ |
| 784 | static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth, |
| 785 | bool may_sleep) |
| 786 | { |
| 787 | int ret; |
| 788 | __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap; |
| 789 | |
| 790 | kaweth->packet_filter_bitmap = 0; |
| 791 | if (packet_filter_bitmap == 0) |
| 792 | return; |
| 793 | |
| 794 | if (!may_sleep) |
| 795 | return; |
| 796 | |
| 797 | ret = usb_control_msg(kaweth->dev, usb_sndctrlpipe(kaweth->dev, 0), |
| 798 | KAWETH_COMMAND_SET_PACKET_FILTER, |
| 799 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 800 | packet_filter_bitmap, 0, |
| 801 | &kaweth->scratch, 0, |
| 802 | KAWETH_CONTROL_TIMEOUT); |
| 803 | if (ret < 0) |
| 804 | dev_err(&kaweth->intf->dev, "Failed to set Rx mode: %d\n", |
| 805 | ret); |
| 806 | else |
| 807 | netdev_dbg(kaweth->net, "Set Rx mode to %d\n", |
| 808 | packet_filter_bitmap); |
| 809 | } |
| 810 | |
| 811 | /**************************************************************** |
| 812 | * kaweth_tx_timeout |
| 813 | ****************************************************************/ |
| 814 | static void kaweth_tx_timeout(struct net_device *net, unsigned int txqueue) |
| 815 | { |
| 816 | struct kaweth_device *kaweth = netdev_priv(net); |
| 817 | |
| 818 | dev_warn(&net->dev, "%s: Tx timed out. Resetting.\n", net->name); |
| 819 | net->stats.tx_errors++; |
| 820 | netif_trans_update(net); |
| 821 | |
| 822 | usb_unlink_urb(kaweth->tx_urb); |
| 823 | } |
| 824 | |
| 825 | /**************************************************************** |
| 826 | * kaweth_suspend |
| 827 | ****************************************************************/ |
| 828 | static int kaweth_suspend(struct usb_interface *intf, pm_message_t message) |
| 829 | { |
| 830 | struct kaweth_device *kaweth = usb_get_intfdata(intf); |
| 831 | unsigned long flags; |
| 832 | |
| 833 | spin_lock_irqsave(&kaweth->device_lock, flags); |
| 834 | kaweth->status |= KAWETH_STATUS_SUSPENDING; |
| 835 | spin_unlock_irqrestore(&kaweth->device_lock, flags); |
| 836 | |
| 837 | kaweth_kill_urbs(kaweth); |
| 838 | return 0; |
| 839 | } |
| 840 | |
| 841 | /**************************************************************** |
| 842 | * kaweth_resume |
| 843 | ****************************************************************/ |
| 844 | static int kaweth_resume(struct usb_interface *intf) |
| 845 | { |
| 846 | struct kaweth_device *kaweth = usb_get_intfdata(intf); |
| 847 | unsigned long flags; |
| 848 | |
| 849 | spin_lock_irqsave(&kaweth->device_lock, flags); |
| 850 | kaweth->status &= ~KAWETH_STATUS_SUSPENDING; |
| 851 | spin_unlock_irqrestore(&kaweth->device_lock, flags); |
| 852 | |
| 853 | if (!kaweth->opened) |
| 854 | return 0; |
| 855 | kaweth_resubmit_rx_urb(kaweth, GFP_NOIO); |
| 856 | kaweth_resubmit_int_urb(kaweth, GFP_NOIO); |
| 857 | |
| 858 | return 0; |
| 859 | } |
| 860 | |
| 861 | /**************************************************************** |
| 862 | * kaweth_probe |
| 863 | ****************************************************************/ |
| 864 | |
| 865 | |
| 866 | static const struct net_device_ops kaweth_netdev_ops = { |
| 867 | .ndo_open = kaweth_open, |
| 868 | .ndo_stop = kaweth_close, |
| 869 | .ndo_start_xmit = kaweth_start_xmit, |
| 870 | .ndo_tx_timeout = kaweth_tx_timeout, |
| 871 | .ndo_set_rx_mode = kaweth_set_rx_mode, |
| 872 | .ndo_set_mac_address = eth_mac_addr, |
| 873 | .ndo_validate_addr = eth_validate_addr, |
| 874 | }; |
| 875 | |
| 876 | static int kaweth_probe( |
| 877 | struct usb_interface *intf, |
| 878 | const struct usb_device_id *id /* from id_table */ |
| 879 | ) |
| 880 | { |
| 881 | struct device *dev = &intf->dev; |
| 882 | struct usb_device *udev = interface_to_usbdev(intf); |
| 883 | struct kaweth_device *kaweth; |
| 884 | struct net_device *netdev; |
| 885 | const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
| 886 | int result = 0; |
| 887 | int rv = -EIO; |
| 888 | |
| 889 | dev_dbg(dev, |
| 890 | "Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x\n", |
| 891 | udev->devnum, le16_to_cpu(udev->descriptor.idVendor), |
| 892 | le16_to_cpu(udev->descriptor.idProduct), |
| 893 | le16_to_cpu(udev->descriptor.bcdDevice)); |
| 894 | |
| 895 | dev_dbg(dev, "Device at %p\n", udev); |
| 896 | |
| 897 | dev_dbg(dev, "Descriptor length: %x type: %x\n", |
| 898 | (int)udev->descriptor.bLength, |
| 899 | (int)udev->descriptor.bDescriptorType); |
| 900 | |
| 901 | netdev = alloc_etherdev(sizeof(*kaweth)); |
| 902 | if (!netdev) |
| 903 | return -ENOMEM; |
| 904 | |
| 905 | kaweth = netdev_priv(netdev); |
| 906 | kaweth->dev = udev; |
| 907 | kaweth->net = netdev; |
| 908 | kaweth->intf = intf; |
| 909 | |
| 910 | spin_lock_init(&kaweth->device_lock); |
| 911 | init_waitqueue_head(&kaweth->term_wait); |
| 912 | |
| 913 | dev_dbg(dev, "Resetting.\n"); |
| 914 | |
| 915 | kaweth_reset(kaweth); |
| 916 | |
| 917 | /* |
| 918 | * If high byte of bcdDevice is nonzero, firmware is already |
| 919 | * downloaded. Don't try to do it again, or we'll hang the device. |
| 920 | */ |
| 921 | |
| 922 | if (le16_to_cpu(udev->descriptor.bcdDevice) >> 8) { |
| 923 | dev_info(dev, "Firmware present in device.\n"); |
| 924 | } else { |
| 925 | /* Download the firmware */ |
| 926 | dev_info(dev, "Downloading firmware...\n"); |
| 927 | kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL); |
| 928 | if (!kaweth->firmware_buf) { |
| 929 | rv = -ENOMEM; |
| 930 | goto err_free_netdev; |
| 931 | } |
| 932 | if ((result = kaweth_download_firmware(kaweth, |
| 933 | "kaweth/new_code.bin", |
| 934 | 100, |
| 935 | 2)) < 0) { |
| 936 | dev_err(dev, "Error downloading firmware (%d)\n", |
| 937 | result); |
| 938 | goto err_fw; |
| 939 | } |
| 940 | |
| 941 | if ((result = kaweth_download_firmware(kaweth, |
| 942 | "kaweth/new_code_fix.bin", |
| 943 | 100, |
| 944 | 3)) < 0) { |
| 945 | dev_err(dev, "Error downloading firmware fix (%d)\n", |
| 946 | result); |
| 947 | goto err_fw; |
| 948 | } |
| 949 | |
| 950 | if ((result = kaweth_download_firmware(kaweth, |
| 951 | "kaweth/trigger_code.bin", |
| 952 | 126, |
| 953 | 2)) < 0) { |
| 954 | dev_err(dev, "Error downloading trigger code (%d)\n", |
| 955 | result); |
| 956 | goto err_fw; |
| 957 | |
| 958 | } |
| 959 | |
| 960 | if ((result = kaweth_download_firmware(kaweth, |
| 961 | "kaweth/trigger_code_fix.bin", |
| 962 | 126, |
| 963 | 3)) < 0) { |
| 964 | dev_err(dev, "Error downloading trigger code fix (%d)\n", result); |
| 965 | goto err_fw; |
| 966 | } |
| 967 | |
| 968 | |
| 969 | if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) { |
| 970 | dev_err(dev, "Error triggering firmware (%d)\n", result); |
| 971 | goto err_fw; |
| 972 | } |
| 973 | |
| 974 | /* Device will now disappear for a moment... */ |
| 975 | dev_info(dev, "Firmware loaded. I'll be back...\n"); |
| 976 | err_fw: |
| 977 | free_page((unsigned long)kaweth->firmware_buf); |
| 978 | free_netdev(netdev); |
| 979 | return -EIO; |
| 980 | } |
| 981 | |
| 982 | result = kaweth_read_configuration(kaweth); |
| 983 | |
| 984 | if(result < 0) { |
| 985 | dev_err(dev, "Error reading configuration (%d), no net device created\n", result); |
| 986 | goto err_free_netdev; |
| 987 | } |
| 988 | |
| 989 | dev_info(dev, "Statistics collection: %x\n", kaweth->configuration.statistics_mask); |
| 990 | dev_info(dev, "Multicast filter limit: %x\n", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1)); |
| 991 | dev_info(dev, "MTU: %d\n", le16_to_cpu(kaweth->configuration.segment_size)); |
| 992 | dev_info(dev, "Read MAC address %pM\n", kaweth->configuration.hw_addr); |
| 993 | |
| 994 | if(!memcmp(&kaweth->configuration.hw_addr, |
| 995 | &bcast_addr, |
| 996 | sizeof(bcast_addr))) { |
| 997 | dev_err(dev, "Firmware not functioning properly, no net device created\n"); |
| 998 | goto err_free_netdev; |
| 999 | } |
| 1000 | |
| 1001 | if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) { |
| 1002 | dev_dbg(dev, "Error setting URB size\n"); |
| 1003 | goto err_free_netdev; |
| 1004 | } |
| 1005 | |
| 1006 | if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) { |
| 1007 | dev_err(dev, "Error setting SOFS wait\n"); |
| 1008 | goto err_free_netdev; |
| 1009 | } |
| 1010 | |
| 1011 | result = kaweth_set_receive_filter(kaweth, |
| 1012 | KAWETH_PACKET_FILTER_DIRECTED | |
| 1013 | KAWETH_PACKET_FILTER_BROADCAST | |
| 1014 | KAWETH_PACKET_FILTER_MULTICAST); |
| 1015 | |
| 1016 | if(result < 0) { |
| 1017 | dev_err(dev, "Error setting receive filter\n"); |
| 1018 | goto err_free_netdev; |
| 1019 | } |
| 1020 | |
| 1021 | dev_dbg(dev, "Initializing net device.\n"); |
| 1022 | |
| 1023 | kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 1024 | if (!kaweth->tx_urb) |
| 1025 | goto err_free_netdev; |
| 1026 | kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 1027 | if (!kaweth->rx_urb) |
| 1028 | goto err_only_tx; |
| 1029 | kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL); |
| 1030 | if (!kaweth->irq_urb) |
| 1031 | goto err_tx_and_rx; |
| 1032 | |
| 1033 | kaweth->intbuffer = usb_alloc_coherent( kaweth->dev, |
| 1034 | INTBUFFERSIZE, |
| 1035 | GFP_KERNEL, |
| 1036 | &kaweth->intbufferhandle); |
| 1037 | if (!kaweth->intbuffer) |
| 1038 | goto err_tx_and_rx_and_irq; |
| 1039 | kaweth->rx_buf = usb_alloc_coherent( kaweth->dev, |
| 1040 | KAWETH_BUF_SIZE, |
| 1041 | GFP_KERNEL, |
| 1042 | &kaweth->rxbufferhandle); |
| 1043 | if (!kaweth->rx_buf) |
| 1044 | goto err_all_but_rxbuf; |
| 1045 | |
| 1046 | memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr)); |
| 1047 | eth_hw_addr_set(netdev, (u8 *)&kaweth->configuration.hw_addr); |
| 1048 | |
| 1049 | netdev->netdev_ops = &kaweth_netdev_ops; |
| 1050 | netdev->watchdog_timeo = KAWETH_TX_TIMEOUT; |
| 1051 | netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size); |
| 1052 | netdev->ethtool_ops = &ops; |
| 1053 | |
| 1054 | /* kaweth is zeroed as part of alloc_netdev */ |
| 1055 | INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl); |
| 1056 | usb_set_intfdata(intf, kaweth); |
| 1057 | |
| 1058 | SET_NETDEV_DEV(netdev, dev); |
| 1059 | if (register_netdev(netdev) != 0) { |
| 1060 | dev_err(dev, "Error registering netdev.\n"); |
| 1061 | goto err_intfdata; |
| 1062 | } |
| 1063 | |
| 1064 | dev_info(dev, "kaweth interface created at %s\n", |
| 1065 | kaweth->net->name); |
| 1066 | |
| 1067 | return 0; |
| 1068 | |
| 1069 | err_intfdata: |
| 1070 | usb_set_intfdata(intf, NULL); |
| 1071 | usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); |
| 1072 | err_all_but_rxbuf: |
| 1073 | usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); |
| 1074 | err_tx_and_rx_and_irq: |
| 1075 | usb_free_urb(kaweth->irq_urb); |
| 1076 | err_tx_and_rx: |
| 1077 | usb_free_urb(kaweth->rx_urb); |
| 1078 | err_only_tx: |
| 1079 | usb_free_urb(kaweth->tx_urb); |
| 1080 | err_free_netdev: |
| 1081 | free_netdev(netdev); |
| 1082 | |
| 1083 | return rv; |
| 1084 | } |
| 1085 | |
| 1086 | /**************************************************************** |
| 1087 | * kaweth_disconnect |
| 1088 | ****************************************************************/ |
| 1089 | static void kaweth_disconnect(struct usb_interface *intf) |
| 1090 | { |
| 1091 | struct kaweth_device *kaweth = usb_get_intfdata(intf); |
| 1092 | struct net_device *netdev; |
| 1093 | |
| 1094 | usb_set_intfdata(intf, NULL); |
| 1095 | if (!kaweth) { |
| 1096 | dev_warn(&intf->dev, "unregistering non-existent device\n"); |
| 1097 | return; |
| 1098 | } |
| 1099 | netdev = kaweth->net; |
| 1100 | |
| 1101 | netdev_dbg(kaweth->net, "Unregistering net device\n"); |
| 1102 | unregister_netdev(netdev); |
| 1103 | |
| 1104 | usb_free_urb(kaweth->rx_urb); |
| 1105 | usb_free_urb(kaweth->tx_urb); |
| 1106 | usb_free_urb(kaweth->irq_urb); |
| 1107 | |
| 1108 | usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); |
| 1109 | usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); |
| 1110 | |
| 1111 | free_netdev(netdev); |
| 1112 | } |
| 1113 | |
| 1114 | |
| 1115 | module_usb_driver(kaweth_driver); |