1 /****************************************************************************** 2 * 3 * Driver for Option High Speed Mobile Devices. 4 * 5 * Copyright (C) 2008 Option International 6 * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd) 7 * <ajb@spheresystems.co.uk> 8 * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de> 9 * Copyright (C) 2008 Novell, Inc. 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License version 2 as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 23 * USA 24 * 25 * 26 *****************************************************************************/ 27 28 /****************************************************************************** 29 * 30 * Description of the device: 31 * 32 * Interface 0: Contains the IP network interface on the bulk end points. 33 * The multiplexed serial ports are using the interrupt and 34 * control endpoints. 35 * Interrupt contains a bitmap telling which multiplexed 36 * serialport needs servicing. 37 * 38 * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the 39 * port is opened, as this have a huge impact on the network port 40 * throughput. 41 * 42 * Interface 2: Standard modem interface - circuit switched interface, should 43 * not be used. 44 * 45 *****************************************************************************/ 46 47 #include <linux/sched.h> 48 #include <linux/slab.h> 49 #include <linux/init.h> 50 #include <linux/delay.h> 51 #include <linux/netdevice.h> 52 #include <linux/module.h> 53 #include <linux/ethtool.h> 54 #include <linux/usb.h> 55 #include <linux/timer.h> 56 #include <linux/tty.h> 57 #include <linux/tty_driver.h> 58 #include <linux/tty_flip.h> 59 #include <linux/kmod.h> 60 #include <linux/rfkill.h> 61 #include <linux/ip.h> 62 #include <linux/uaccess.h> 63 #include <linux/usb/cdc.h> 64 #include <net/arp.h> 65 #include <asm/byteorder.h> 66 67 68 #define DRIVER_VERSION "1.2" 69 #define MOD_AUTHOR "Option Wireless" 70 #define MOD_DESCRIPTION "USB High Speed Option driver" 71 #define MOD_LICENSE "GPL" 72 73 #define HSO_MAX_NET_DEVICES 10 74 #define HSO__MAX_MTU 2048 75 #define DEFAULT_MTU 1500 76 #define DEFAULT_MRU 1500 77 78 #define CTRL_URB_RX_SIZE 1024 79 #define CTRL_URB_TX_SIZE 64 80 81 #define BULK_URB_RX_SIZE 4096 82 #define BULK_URB_TX_SIZE 8192 83 84 #define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU 85 #define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU 86 #define MUX_BULK_RX_BUF_COUNT 4 87 #define USB_TYPE_OPTION_VENDOR 0x20 88 89 /* These definitions are used with the struct hso_net flags element */ 90 /* - use *_bit operations on it. (bit indices not values.) */ 91 #define HSO_NET_RUNNING 0 92 93 #define HSO_NET_TX_TIMEOUT (HZ*10) 94 95 /* Serial port defines and structs. */ 96 #define HSO_SERIAL_FLAG_RX_SENT 0 97 98 #define HSO_SERIAL_MAGIC 0x48534f31 99 100 /* Number of ttys to handle */ 101 #define HSO_SERIAL_TTY_MINORS 256 102 103 #define MAX_RX_URBS 2 104 105 #define get_serial_by_tty(x) \ 106 (x ? (struct hso_serial *)x->driver_data : NULL) 107 108 /*****************************************************************************/ 109 /* Debugging functions */ 110 /*****************************************************************************/ 111 #define D__(lvl_, fmt, arg...) \ 112 do { \ 113 printk(lvl_ "[%d:%s]: " fmt "\n", \ 114 __LINE__, __func__, ## arg); \ 115 } while (0) 116 117 #define D_(lvl, args...) \ 118 do { \ 119 if (lvl & debug) \ 120 D__(KERN_INFO, args); \ 121 } while (0) 122 123 #define D1(args...) D_(0x01, ##args) 124 #define D2(args...) D_(0x02, ##args) 125 #define D3(args...) D_(0x04, ##args) 126 #define D4(args...) D_(0x08, ##args) 127 #define D5(args...) D_(0x10, ##args) 128 129 /*****************************************************************************/ 130 /* Enumerators */ 131 /*****************************************************************************/ 132 enum pkt_parse_state { 133 WAIT_IP, 134 WAIT_DATA, 135 WAIT_SYNC 136 }; 137 138 /*****************************************************************************/ 139 /* Structs */ 140 /*****************************************************************************/ 141 142 struct hso_shared_int { 143 struct usb_endpoint_descriptor *intr_endp; 144 void *shared_intr_buf; 145 struct urb *shared_intr_urb; 146 struct usb_device *usb; 147 int use_count; 148 int ref_count; 149 struct mutex shared_int_lock; 150 }; 151 152 struct hso_net { 153 struct hso_device *parent; 154 struct net_device *net; 155 struct rfkill *rfkill; 156 157 struct usb_endpoint_descriptor *in_endp; 158 struct usb_endpoint_descriptor *out_endp; 159 160 struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT]; 161 struct urb *mux_bulk_tx_urb; 162 void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT]; 163 void *mux_bulk_tx_buf; 164 165 struct sk_buff *skb_rx_buf; 166 struct sk_buff *skb_tx_buf; 167 168 enum pkt_parse_state rx_parse_state; 169 spinlock_t net_lock; 170 171 unsigned short rx_buf_size; 172 unsigned short rx_buf_missing; 173 struct iphdr rx_ip_hdr; 174 175 unsigned long flags; 176 }; 177 178 struct hso_serial { 179 struct hso_device *parent; 180 int magic; 181 u8 minor; 182 183 struct hso_shared_int *shared_int; 184 185 /* rx/tx urb could be either a bulk urb or a control urb depending 186 on which serial port it is used on. */ 187 struct urb *rx_urb[MAX_RX_URBS]; 188 u8 num_rx_urbs; 189 u8 *rx_data[MAX_RX_URBS]; 190 u16 rx_data_length; /* should contain allocated length */ 191 192 struct urb *tx_urb; 193 u8 *tx_data; 194 u8 *tx_buffer; 195 u16 tx_data_length; /* should contain allocated length */ 196 u16 tx_data_count; 197 u16 tx_buffer_count; 198 struct usb_ctrlrequest ctrl_req_tx; 199 struct usb_ctrlrequest ctrl_req_rx; 200 201 struct usb_endpoint_descriptor *in_endp; 202 struct usb_endpoint_descriptor *out_endp; 203 204 unsigned long flags; 205 u8 rts_state; 206 u8 dtr_state; 207 unsigned tx_urb_used:1; 208 209 /* from usb_serial_port */ 210 struct tty_struct *tty; 211 int open_count; 212 spinlock_t serial_lock; 213 214 int (*write_data) (struct hso_serial *serial); 215 }; 216 217 struct hso_device { 218 union { 219 struct hso_serial *dev_serial; 220 struct hso_net *dev_net; 221 } port_data; 222 223 u32 port_spec; 224 225 u8 is_active; 226 u8 usb_gone; 227 struct work_struct async_get_intf; 228 struct work_struct async_put_intf; 229 230 struct usb_device *usb; 231 struct usb_interface *interface; 232 233 struct device *dev; 234 struct kref ref; 235 struct mutex mutex; 236 }; 237 238 /* Type of interface */ 239 #define HSO_INTF_MASK 0xFF00 240 #define HSO_INTF_MUX 0x0100 241 #define HSO_INTF_BULK 0x0200 242 243 /* Type of port */ 244 #define HSO_PORT_MASK 0xFF 245 #define HSO_PORT_NO_PORT 0x0 246 #define HSO_PORT_CONTROL 0x1 247 #define HSO_PORT_APP 0x2 248 #define HSO_PORT_GPS 0x3 249 #define HSO_PORT_PCSC 0x4 250 #define HSO_PORT_APP2 0x5 251 #define HSO_PORT_GPS_CONTROL 0x6 252 #define HSO_PORT_MSD 0x7 253 #define HSO_PORT_VOICE 0x8 254 #define HSO_PORT_DIAG2 0x9 255 #define HSO_PORT_DIAG 0x10 256 #define HSO_PORT_MODEM 0x11 257 #define HSO_PORT_NETWORK 0x12 258 259 /* Additional device info */ 260 #define HSO_INFO_MASK 0xFF000000 261 #define HSO_INFO_CRC_BUG 0x01000000 262 263 /*****************************************************************************/ 264 /* Prototypes */ 265 /*****************************************************************************/ 266 /* Serial driver functions */ 267 static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file, 268 unsigned int set, unsigned int clear); 269 static void ctrl_callback(struct urb *urb); 270 static void put_rxbuf_data(struct urb *urb, struct hso_serial *serial); 271 static void hso_kick_transmit(struct hso_serial *serial); 272 /* Helper functions */ 273 static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int, 274 struct usb_device *usb, gfp_t gfp); 275 static void log_usb_status(int status, const char *function); 276 static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, 277 int type, int dir); 278 static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports); 279 static void hso_free_interface(struct usb_interface *intf); 280 static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags); 281 static int hso_stop_serial_device(struct hso_device *hso_dev); 282 static int hso_start_net_device(struct hso_device *hso_dev); 283 static void hso_free_shared_int(struct hso_shared_int *shared_int); 284 static int hso_stop_net_device(struct hso_device *hso_dev); 285 static void hso_serial_ref_free(struct kref *ref); 286 static void async_get_intf(struct work_struct *data); 287 static void async_put_intf(struct work_struct *data); 288 static int hso_put_activity(struct hso_device *hso_dev); 289 static int hso_get_activity(struct hso_device *hso_dev); 290 291 /*****************************************************************************/ 292 /* Helping functions */ 293 /*****************************************************************************/ 294 295 /* #define DEBUG */ 296 297 #define dev2net(x) (x->port_data.dev_net) 298 #define dev2ser(x) (x->port_data.dev_serial) 299 300 /* Debugging functions */ 301 #ifdef DEBUG 302 static void dbg_dump(int line_count, const char *func_name, unsigned char *buf, 303 unsigned int len) 304 { 305 u8 i = 0; 306 307 printk(KERN_DEBUG "[%d:%s]: len %d", line_count, func_name, len); 308 309 for (i = 0; i < len; i++) { 310 if (!(i % 16)) 311 printk("\n 0x%03x: ", i); 312 printk("%02x ", (unsigned char)buf[i]); 313 } 314 printk("\n"); 315 } 316 317 #define DUMP(buf_, len_) \ 318 dbg_dump(__LINE__, __func__, buf_, len_) 319 320 #define DUMP1(buf_, len_) \ 321 do { \ 322 if (0x01 & debug) \ 323 DUMP(buf_, len_); \ 324 } while (0) 325 #else 326 #define DUMP(buf_, len_) 327 #define DUMP1(buf_, len_) 328 #endif 329 330 /* module parameters */ 331 static int debug; 332 static int tty_major; 333 static int disable_net; 334 335 /* driver info */ 336 static const char driver_name[] = "hso"; 337 static const char tty_filename[] = "ttyHS"; 338 static const char *version = __FILE__ ": " DRIVER_VERSION " " MOD_AUTHOR; 339 /* the usb driver itself (registered in hso_init) */ 340 static struct usb_driver hso_driver; 341 /* serial structures */ 342 static struct tty_driver *tty_drv; 343 static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS]; 344 static struct hso_device *network_table[HSO_MAX_NET_DEVICES]; 345 static spinlock_t serial_table_lock; 346 static struct ktermios *hso_serial_termios[HSO_SERIAL_TTY_MINORS]; 347 static struct ktermios *hso_serial_termios_locked[HSO_SERIAL_TTY_MINORS]; 348 349 static const s32 default_port_spec[] = { 350 HSO_INTF_MUX | HSO_PORT_NETWORK, 351 HSO_INTF_BULK | HSO_PORT_DIAG, 352 HSO_INTF_BULK | HSO_PORT_MODEM, 353 0 354 }; 355 356 static const s32 icon321_port_spec[] = { 357 HSO_INTF_MUX | HSO_PORT_NETWORK, 358 HSO_INTF_BULK | HSO_PORT_DIAG2, 359 HSO_INTF_BULK | HSO_PORT_MODEM, 360 HSO_INTF_BULK | HSO_PORT_DIAG, 361 0 362 }; 363 364 #define default_port_device(vendor, product) \ 365 USB_DEVICE(vendor, product), \ 366 .driver_info = (kernel_ulong_t)default_port_spec 367 368 #define icon321_port_device(vendor, product) \ 369 USB_DEVICE(vendor, product), \ 370 .driver_info = (kernel_ulong_t)icon321_port_spec 371 372 /* list of devices we support */ 373 static const struct usb_device_id hso_ids[] = { 374 {default_port_device(0x0af0, 0x6711)}, 375 {default_port_device(0x0af0, 0x6731)}, 376 {default_port_device(0x0af0, 0x6751)}, 377 {default_port_device(0x0af0, 0x6771)}, 378 {default_port_device(0x0af0, 0x6791)}, 379 {default_port_device(0x0af0, 0x6811)}, 380 {default_port_device(0x0af0, 0x6911)}, 381 {default_port_device(0x0af0, 0x6951)}, 382 {default_port_device(0x0af0, 0x6971)}, 383 {default_port_device(0x0af0, 0x7011)}, 384 {default_port_device(0x0af0, 0x7031)}, 385 {default_port_device(0x0af0, 0x7051)}, 386 {default_port_device(0x0af0, 0x7071)}, 387 {default_port_device(0x0af0, 0x7111)}, 388 {default_port_device(0x0af0, 0x7211)}, 389 {default_port_device(0x0af0, 0x7251)}, 390 {default_port_device(0x0af0, 0x7271)}, 391 {default_port_device(0x0af0, 0x7311)}, 392 {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */ 393 {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */ 394 {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */ 395 {default_port_device(0x0af0, 0xd033)}, /* Icon-322 */ 396 {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */ 397 {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */ 398 {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */ 399 {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */ 400 {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */ 401 {} 402 }; 403 MODULE_DEVICE_TABLE(usb, hso_ids); 404 405 /* Sysfs attribute */ 406 static ssize_t hso_sysfs_show_porttype(struct device *dev, 407 struct device_attribute *attr, 408 char *buf) 409 { 410 struct hso_device *hso_dev = dev->driver_data; 411 char *port_name; 412 413 if (!hso_dev) 414 return 0; 415 416 switch (hso_dev->port_spec & HSO_PORT_MASK) { 417 case HSO_PORT_CONTROL: 418 port_name = "Control"; 419 break; 420 case HSO_PORT_APP: 421 port_name = "Application"; 422 break; 423 case HSO_PORT_APP2: 424 port_name = "Application2"; 425 break; 426 case HSO_PORT_GPS: 427 port_name = "GPS"; 428 break; 429 case HSO_PORT_GPS_CONTROL: 430 port_name = "GPS Control"; 431 break; 432 case HSO_PORT_PCSC: 433 port_name = "PCSC"; 434 break; 435 case HSO_PORT_DIAG: 436 port_name = "Diagnostic"; 437 break; 438 case HSO_PORT_DIAG2: 439 port_name = "Diagnostic2"; 440 break; 441 case HSO_PORT_MODEM: 442 port_name = "Modem"; 443 break; 444 case HSO_PORT_NETWORK: 445 port_name = "Network"; 446 break; 447 default: 448 port_name = "Unknown"; 449 break; 450 } 451 452 return sprintf(buf, "%s\n", port_name); 453 } 454 static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL); 455 456 /* converts mux value to a port spec value */ 457 static u32 hso_mux_to_port(int mux) 458 { 459 u32 result; 460 461 switch (mux) { 462 case 0x1: 463 result = HSO_PORT_CONTROL; 464 break; 465 case 0x2: 466 result = HSO_PORT_APP; 467 break; 468 case 0x4: 469 result = HSO_PORT_PCSC; 470 break; 471 case 0x8: 472 result = HSO_PORT_GPS; 473 break; 474 case 0x10: 475 result = HSO_PORT_APP2; 476 break; 477 default: 478 result = HSO_PORT_NO_PORT; 479 } 480 return result; 481 } 482 483 /* converts port spec value to a mux value */ 484 static u32 hso_port_to_mux(int port) 485 { 486 u32 result; 487 488 switch (port & HSO_PORT_MASK) { 489 case HSO_PORT_CONTROL: 490 result = 0x0; 491 break; 492 case HSO_PORT_APP: 493 result = 0x1; 494 break; 495 case HSO_PORT_PCSC: 496 result = 0x2; 497 break; 498 case HSO_PORT_GPS: 499 result = 0x3; 500 break; 501 case HSO_PORT_APP2: 502 result = 0x4; 503 break; 504 default: 505 result = 0x0; 506 } 507 return result; 508 } 509 510 static struct hso_serial *get_serial_by_shared_int_and_type( 511 struct hso_shared_int *shared_int, 512 int mux) 513 { 514 int i, port; 515 516 port = hso_mux_to_port(mux); 517 518 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { 519 if (serial_table[i] 520 && (dev2ser(serial_table[i])->shared_int == shared_int) 521 && ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) { 522 return dev2ser(serial_table[i]); 523 } 524 } 525 526 return NULL; 527 } 528 529 static struct hso_serial *get_serial_by_index(unsigned index) 530 { 531 struct hso_serial *serial; 532 unsigned long flags; 533 534 if (!serial_table[index]) 535 return NULL; 536 spin_lock_irqsave(&serial_table_lock, flags); 537 serial = dev2ser(serial_table[index]); 538 spin_unlock_irqrestore(&serial_table_lock, flags); 539 540 return serial; 541 } 542 543 static int get_free_serial_index(void) 544 { 545 int index; 546 unsigned long flags; 547 548 spin_lock_irqsave(&serial_table_lock, flags); 549 for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) { 550 if (serial_table[index] == NULL) { 551 spin_unlock_irqrestore(&serial_table_lock, flags); 552 return index; 553 } 554 } 555 spin_unlock_irqrestore(&serial_table_lock, flags); 556 557 printk(KERN_ERR "%s: no free serial devices in table\n", __func__); 558 return -1; 559 } 560 561 static void set_serial_by_index(unsigned index, struct hso_serial *serial) 562 { 563 unsigned long flags; 564 spin_lock_irqsave(&serial_table_lock, flags); 565 if (serial) 566 serial_table[index] = serial->parent; 567 else 568 serial_table[index] = NULL; 569 spin_unlock_irqrestore(&serial_table_lock, flags); 570 } 571 572 /* log a meaningfull explanation of an USB status */ 573 static void log_usb_status(int status, const char *function) 574 { 575 char *explanation; 576 577 switch (status) { 578 case -ENODEV: 579 explanation = "no device"; 580 break; 581 case -ENOENT: 582 explanation = "endpoint not enabled"; 583 break; 584 case -EPIPE: 585 explanation = "endpoint stalled"; 586 break; 587 case -ENOSPC: 588 explanation = "not enough bandwidth"; 589 break; 590 case -ESHUTDOWN: 591 explanation = "device disabled"; 592 break; 593 case -EHOSTUNREACH: 594 explanation = "device suspended"; 595 break; 596 case -EINVAL: 597 case -EAGAIN: 598 case -EFBIG: 599 case -EMSGSIZE: 600 explanation = "internal error"; 601 break; 602 default: 603 explanation = "unknown status"; 604 break; 605 } 606 D1("%s: received USB status - %s (%d)", function, explanation, status); 607 } 608 609 /* Network interface functions */ 610 611 /* called when net interface is brought up by ifconfig */ 612 static int hso_net_open(struct net_device *net) 613 { 614 struct hso_net *odev = netdev_priv(net); 615 unsigned long flags = 0; 616 617 if (!odev) { 618 dev_err(&net->dev, "No net device !\n"); 619 return -ENODEV; 620 } 621 622 odev->skb_tx_buf = NULL; 623 624 /* setup environment */ 625 spin_lock_irqsave(&odev->net_lock, flags); 626 odev->rx_parse_state = WAIT_IP; 627 odev->rx_buf_size = 0; 628 odev->rx_buf_missing = sizeof(struct iphdr); 629 spin_unlock_irqrestore(&odev->net_lock, flags); 630 631 hso_start_net_device(odev->parent); 632 633 /* We are up and running. */ 634 set_bit(HSO_NET_RUNNING, &odev->flags); 635 636 /* Tell the kernel we are ready to start receiving from it */ 637 netif_start_queue(net); 638 639 return 0; 640 } 641 642 /* called when interface is brought down by ifconfig */ 643 static int hso_net_close(struct net_device *net) 644 { 645 struct hso_net *odev = netdev_priv(net); 646 647 /* we don't need the queue anymore */ 648 netif_stop_queue(net); 649 /* no longer running */ 650 clear_bit(HSO_NET_RUNNING, &odev->flags); 651 652 hso_stop_net_device(odev->parent); 653 654 /* done */ 655 return 0; 656 } 657 658 /* USB tells is xmit done, we should start the netqueue again */ 659 static void write_bulk_callback(struct urb *urb) 660 { 661 struct hso_net *odev = urb->context; 662 int status = urb->status; 663 664 /* Sanity check */ 665 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { 666 dev_err(&urb->dev->dev, "%s: device not running\n", __func__); 667 return; 668 } 669 670 /* Do we still have a valid kernel network device? */ 671 if (!netif_device_present(odev->net)) { 672 dev_err(&urb->dev->dev, "%s: net device not present\n", 673 __func__); 674 return; 675 } 676 677 /* log status, but don't act on it, we don't need to resubmit anything 678 * anyhow */ 679 if (status) 680 log_usb_status(status, __func__); 681 682 hso_put_activity(odev->parent); 683 684 /* Tell the network interface we are ready for another frame */ 685 netif_wake_queue(odev->net); 686 } 687 688 /* called by kernel when we need to transmit a packet */ 689 static int hso_net_start_xmit(struct sk_buff *skb, struct net_device *net) 690 { 691 struct hso_net *odev = netdev_priv(net); 692 int result; 693 694 /* Tell the kernel, "No more frames 'til we are done with this one." */ 695 netif_stop_queue(net); 696 if (hso_get_activity(odev->parent) == -EAGAIN) { 697 odev->skb_tx_buf = skb; 698 return 0; 699 } 700 701 /* log if asked */ 702 DUMP1(skb->data, skb->len); 703 /* Copy it from kernel memory to OUR memory */ 704 memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len); 705 D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE); 706 707 /* Fill in the URB for shipping it out. */ 708 usb_fill_bulk_urb(odev->mux_bulk_tx_urb, 709 odev->parent->usb, 710 usb_sndbulkpipe(odev->parent->usb, 711 odev->out_endp-> 712 bEndpointAddress & 0x7F), 713 odev->mux_bulk_tx_buf, skb->len, write_bulk_callback, 714 odev); 715 716 /* Deal with the Zero Length packet problem, I hope */ 717 odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET; 718 719 /* Send the URB on its merry way. */ 720 result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC); 721 if (result) { 722 dev_warn(&odev->parent->interface->dev, 723 "failed mux_bulk_tx_urb %d", result); 724 net->stats.tx_errors++; 725 netif_start_queue(net); 726 } else { 727 net->stats.tx_packets++; 728 net->stats.tx_bytes += skb->len; 729 /* And tell the kernel when the last transmit started. */ 730 net->trans_start = jiffies; 731 } 732 dev_kfree_skb(skb); 733 /* we're done */ 734 return result; 735 } 736 737 static void hso_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info) 738 { 739 struct hso_net *odev = netdev_priv(net); 740 741 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN); 742 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN); 743 usb_make_path(odev->parent->usb, info->bus_info, sizeof info->bus_info); 744 } 745 746 static struct ethtool_ops ops = { 747 .get_drvinfo = hso_get_drvinfo, 748 .get_link = ethtool_op_get_link 749 }; 750 751 /* called when a packet did not ack after watchdogtimeout */ 752 static void hso_net_tx_timeout(struct net_device *net) 753 { 754 struct hso_net *odev = netdev_priv(net); 755 756 if (!odev) 757 return; 758 759 /* Tell syslog we are hosed. */ 760 dev_warn(&net->dev, "Tx timed out.\n"); 761 762 /* Tear the waiting frame off the list */ 763 if (odev->mux_bulk_tx_urb 764 && (odev->mux_bulk_tx_urb->status == -EINPROGRESS)) 765 usb_unlink_urb(odev->mux_bulk_tx_urb); 766 767 /* Update statistics */ 768 net->stats.tx_errors++; 769 } 770 771 /* make a real packet from the received USB buffer */ 772 static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt, 773 unsigned int count, unsigned char is_eop) 774 { 775 unsigned short temp_bytes; 776 unsigned short buffer_offset = 0; 777 unsigned short frame_len; 778 unsigned char *tmp_rx_buf; 779 780 /* log if needed */ 781 D1("Rx %d bytes", count); 782 DUMP(ip_pkt, min(128, (int)count)); 783 784 while (count) { 785 switch (odev->rx_parse_state) { 786 case WAIT_IP: 787 /* waiting for IP header. */ 788 /* wanted bytes - size of ip header */ 789 temp_bytes = 790 (count < 791 odev->rx_buf_missing) ? count : odev-> 792 rx_buf_missing; 793 794 memcpy(((unsigned char *)(&odev->rx_ip_hdr)) + 795 odev->rx_buf_size, ip_pkt + buffer_offset, 796 temp_bytes); 797 798 odev->rx_buf_size += temp_bytes; 799 buffer_offset += temp_bytes; 800 odev->rx_buf_missing -= temp_bytes; 801 count -= temp_bytes; 802 803 if (!odev->rx_buf_missing) { 804 /* header is complete allocate an sk_buffer and 805 * continue to WAIT_DATA */ 806 frame_len = ntohs(odev->rx_ip_hdr.tot_len); 807 808 if ((frame_len > DEFAULT_MRU) || 809 (frame_len < sizeof(struct iphdr))) { 810 dev_err(&odev->net->dev, 811 "Invalid frame (%d) length\n", 812 frame_len); 813 odev->rx_parse_state = WAIT_SYNC; 814 continue; 815 } 816 /* Allocate an sk_buff */ 817 odev->skb_rx_buf = dev_alloc_skb(frame_len); 818 if (!odev->skb_rx_buf) { 819 /* We got no receive buffer. */ 820 D1("could not allocate memory"); 821 odev->rx_parse_state = WAIT_SYNC; 822 return; 823 } 824 /* Here's where it came from */ 825 odev->skb_rx_buf->dev = odev->net; 826 827 /* Copy what we got so far. make room for iphdr 828 * after tail. */ 829 tmp_rx_buf = 830 skb_put(odev->skb_rx_buf, 831 sizeof(struct iphdr)); 832 memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr), 833 sizeof(struct iphdr)); 834 835 /* ETH_HLEN */ 836 odev->rx_buf_size = sizeof(struct iphdr); 837 838 /* Filip actually use .tot_len */ 839 odev->rx_buf_missing = 840 frame_len - sizeof(struct iphdr); 841 odev->rx_parse_state = WAIT_DATA; 842 } 843 break; 844 845 case WAIT_DATA: 846 temp_bytes = (count < odev->rx_buf_missing) 847 ? count : odev->rx_buf_missing; 848 849 /* Copy the rest of the bytes that are left in the 850 * buffer into the waiting sk_buf. */ 851 /* Make room for temp_bytes after tail. */ 852 tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes); 853 memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes); 854 855 odev->rx_buf_missing -= temp_bytes; 856 count -= temp_bytes; 857 buffer_offset += temp_bytes; 858 odev->rx_buf_size += temp_bytes; 859 if (!odev->rx_buf_missing) { 860 /* Packet is complete. Inject into stack. */ 861 /* We have IP packet here */ 862 odev->skb_rx_buf->protocol = 863 __constant_htons(ETH_P_IP); 864 /* don't check it */ 865 odev->skb_rx_buf->ip_summed = 866 CHECKSUM_UNNECESSARY; 867 868 skb_reset_mac_header(odev->skb_rx_buf); 869 870 /* Ship it off to the kernel */ 871 netif_rx(odev->skb_rx_buf); 872 /* No longer our buffer. */ 873 odev->skb_rx_buf = NULL; 874 875 /* update out statistics */ 876 odev->net->stats.rx_packets++; 877 878 odev->net->stats.rx_bytes += odev->rx_buf_size; 879 880 odev->rx_buf_size = 0; 881 odev->rx_buf_missing = sizeof(struct iphdr); 882 odev->rx_parse_state = WAIT_IP; 883 } 884 break; 885 886 case WAIT_SYNC: 887 D1(" W_S"); 888 count = 0; 889 break; 890 default: 891 D1(" "); 892 count--; 893 break; 894 } 895 } 896 897 /* Recovery mechanism for WAIT_SYNC state. */ 898 if (is_eop) { 899 if (odev->rx_parse_state == WAIT_SYNC) { 900 odev->rx_parse_state = WAIT_IP; 901 odev->rx_buf_size = 0; 902 odev->rx_buf_missing = sizeof(struct iphdr); 903 } 904 } 905 } 906 907 /* Moving data from usb to kernel (in interrupt state) */ 908 static void read_bulk_callback(struct urb *urb) 909 { 910 struct hso_net *odev = urb->context; 911 struct net_device *net; 912 int result; 913 int status = urb->status; 914 915 /* is al ok? (Filip: Who's Al ?) */ 916 if (status) { 917 log_usb_status(status, __func__); 918 return; 919 } 920 921 /* Sanity check */ 922 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { 923 D1("BULK IN callback but driver is not active!"); 924 return; 925 } 926 usb_mark_last_busy(urb->dev); 927 928 net = odev->net; 929 930 if (!netif_device_present(net)) { 931 /* Somebody killed our network interface... */ 932 return; 933 } 934 935 if (odev->parent->port_spec & HSO_INFO_CRC_BUG) { 936 u32 rest; 937 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF }; 938 rest = urb->actual_length % odev->in_endp->wMaxPacketSize; 939 if (((rest == 5) || (rest == 6)) 940 && !memcmp(((u8 *) urb->transfer_buffer) + 941 urb->actual_length - 4, crc_check, 4)) { 942 urb->actual_length -= 4; 943 } 944 } 945 946 /* do we even have a packet? */ 947 if (urb->actual_length) { 948 /* Handle the IP stream, add header and push it onto network 949 * stack if the packet is complete. */ 950 spin_lock(&odev->net_lock); 951 packetizeRx(odev, urb->transfer_buffer, urb->actual_length, 952 (urb->transfer_buffer_length > 953 urb->actual_length) ? 1 : 0); 954 spin_unlock(&odev->net_lock); 955 } 956 957 /* We are done with this URB, resubmit it. Prep the USB to wait for 958 * another frame. Reuse same as received. */ 959 usb_fill_bulk_urb(urb, 960 odev->parent->usb, 961 usb_rcvbulkpipe(odev->parent->usb, 962 odev->in_endp-> 963 bEndpointAddress & 0x7F), 964 urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE, 965 read_bulk_callback, odev); 966 967 /* Give this to the USB subsystem so it can tell us when more data 968 * arrives. */ 969 result = usb_submit_urb(urb, GFP_ATOMIC); 970 if (result) 971 dev_warn(&odev->parent->interface->dev, 972 "%s failed submit mux_bulk_rx_urb %d", __func__, 973 result); 974 } 975 976 /* Serial driver functions */ 977 978 static void _hso_serial_set_termios(struct tty_struct *tty, 979 struct ktermios *old) 980 { 981 struct hso_serial *serial = get_serial_by_tty(tty); 982 struct ktermios *termios; 983 984 if ((!tty) || (!tty->termios) || (!serial)) { 985 printk(KERN_ERR "%s: no tty structures", __func__); 986 return; 987 } 988 989 D4("port %d", serial->minor); 990 991 /* 992 * The default requirements for this device are: 993 */ 994 termios = tty->termios; 995 termios->c_iflag &= 996 ~(IGNBRK /* disable ignore break */ 997 | BRKINT /* disable break causes interrupt */ 998 | PARMRK /* disable mark parity errors */ 999 | ISTRIP /* disable clear high bit of input characters */ 1000 | INLCR /* disable translate NL to CR */ 1001 | IGNCR /* disable ignore CR */ 1002 | ICRNL /* disable translate CR to NL */ 1003 | IXON); /* disable enable XON/XOFF flow control */ 1004 1005 /* disable postprocess output characters */ 1006 termios->c_oflag &= ~OPOST; 1007 1008 termios->c_lflag &= 1009 ~(ECHO /* disable echo input characters */ 1010 | ECHONL /* disable echo new line */ 1011 | ICANON /* disable erase, kill, werase, and rprnt 1012 special characters */ 1013 | ISIG /* disable interrupt, quit, and suspend special 1014 characters */ 1015 | IEXTEN); /* disable non-POSIX special characters */ 1016 1017 termios->c_cflag &= 1018 ~(CSIZE /* no size */ 1019 | PARENB /* disable parity bit */ 1020 | CBAUD /* clear current baud rate */ 1021 | CBAUDEX); /* clear current buad rate */ 1022 1023 termios->c_cflag |= CS8; /* character size 8 bits */ 1024 1025 /* baud rate 115200 */ 1026 tty_encode_baud_rate(serial->tty, 115200, 115200); 1027 1028 /* 1029 * Force low_latency on; otherwise the pushes are scheduled; 1030 * this is bad as it opens up the possibility of dropping bytes 1031 * on the floor. We don't want to drop bytes on the floor. :) 1032 */ 1033 serial->tty->low_latency = 1; 1034 return; 1035 } 1036 1037 /* open the requested serial port */ 1038 static int hso_serial_open(struct tty_struct *tty, struct file *filp) 1039 { 1040 struct hso_serial *serial = get_serial_by_index(tty->index); 1041 int result; 1042 1043 /* sanity check */ 1044 if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) { 1045 tty->driver_data = NULL; 1046 D1("Failed to open port"); 1047 return -ENODEV; 1048 } 1049 1050 mutex_lock(&serial->parent->mutex); 1051 result = usb_autopm_get_interface(serial->parent->interface); 1052 if (result < 0) 1053 goto err_out; 1054 1055 D1("Opening %d", serial->minor); 1056 kref_get(&serial->parent->ref); 1057 1058 /* setup */ 1059 tty->driver_data = serial; 1060 serial->tty = tty; 1061 1062 /* check for port allready opened, if not set the termios */ 1063 serial->open_count++; 1064 if (serial->open_count == 1) { 1065 tty->low_latency = 1; 1066 serial->flags = 0; 1067 /* Force default termio settings */ 1068 _hso_serial_set_termios(tty, NULL); 1069 result = hso_start_serial_device(serial->parent, GFP_KERNEL); 1070 if (result) { 1071 hso_stop_serial_device(serial->parent); 1072 serial->open_count--; 1073 kref_put(&serial->parent->ref, hso_serial_ref_free); 1074 } 1075 } else { 1076 D1("Port was already open"); 1077 } 1078 1079 usb_autopm_put_interface(serial->parent->interface); 1080 1081 /* done */ 1082 if (result) 1083 hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0); 1084 err_out: 1085 mutex_unlock(&serial->parent->mutex); 1086 return result; 1087 } 1088 1089 /* close the requested serial port */ 1090 static void hso_serial_close(struct tty_struct *tty, struct file *filp) 1091 { 1092 struct hso_serial *serial = tty->driver_data; 1093 u8 usb_gone; 1094 1095 D1("Closing serial port"); 1096 1097 mutex_lock(&serial->parent->mutex); 1098 usb_gone = serial->parent->usb_gone; 1099 1100 if (!usb_gone) 1101 usb_autopm_get_interface(serial->parent->interface); 1102 1103 /* reset the rts and dtr */ 1104 /* do the actual close */ 1105 serial->open_count--; 1106 if (serial->open_count <= 0) { 1107 kref_put(&serial->parent->ref, hso_serial_ref_free); 1108 serial->open_count = 0; 1109 if (serial->tty) { 1110 serial->tty->driver_data = NULL; 1111 serial->tty = NULL; 1112 } 1113 if (!usb_gone) 1114 hso_stop_serial_device(serial->parent); 1115 } 1116 if (!usb_gone) 1117 usb_autopm_put_interface(serial->parent->interface); 1118 mutex_unlock(&serial->parent->mutex); 1119 } 1120 1121 /* close the requested serial port */ 1122 static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf, 1123 int count) 1124 { 1125 struct hso_serial *serial = get_serial_by_tty(tty); 1126 int space, tx_bytes; 1127 unsigned long flags; 1128 1129 /* sanity check */ 1130 if (serial == NULL) { 1131 printk(KERN_ERR "%s: serial is NULL\n", __func__); 1132 return -ENODEV; 1133 } 1134 1135 spin_lock_irqsave(&serial->serial_lock, flags); 1136 1137 space = serial->tx_data_length - serial->tx_buffer_count; 1138 tx_bytes = (count < space) ? count : space; 1139 1140 if (!tx_bytes) 1141 goto out; 1142 1143 memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes); 1144 serial->tx_buffer_count += tx_bytes; 1145 1146 out: 1147 spin_unlock_irqrestore(&serial->serial_lock, flags); 1148 1149 hso_kick_transmit(serial); 1150 /* done */ 1151 return tx_bytes; 1152 } 1153 1154 /* how much room is there for writing */ 1155 static int hso_serial_write_room(struct tty_struct *tty) 1156 { 1157 struct hso_serial *serial = get_serial_by_tty(tty); 1158 int room; 1159 unsigned long flags; 1160 1161 spin_lock_irqsave(&serial->serial_lock, flags); 1162 room = serial->tx_data_length - serial->tx_buffer_count; 1163 spin_unlock_irqrestore(&serial->serial_lock, flags); 1164 1165 /* return free room */ 1166 return room; 1167 } 1168 1169 /* setup the term */ 1170 static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old) 1171 { 1172 struct hso_serial *serial = get_serial_by_tty(tty); 1173 unsigned long flags; 1174 1175 if (old) 1176 D5("Termios called with: cflags new[%d] - old[%d]", 1177 tty->termios->c_cflag, old->c_cflag); 1178 1179 /* the actual setup */ 1180 spin_lock_irqsave(&serial->serial_lock, flags); 1181 if (serial->open_count) 1182 _hso_serial_set_termios(tty, old); 1183 else 1184 tty->termios = old; 1185 spin_unlock_irqrestore(&serial->serial_lock, flags); 1186 1187 /* done */ 1188 return; 1189 } 1190 1191 /* how many characters in the buffer */ 1192 static int hso_serial_chars_in_buffer(struct tty_struct *tty) 1193 { 1194 struct hso_serial *serial = get_serial_by_tty(tty); 1195 int chars; 1196 unsigned long flags; 1197 1198 /* sanity check */ 1199 if (serial == NULL) 1200 return 0; 1201 1202 spin_lock_irqsave(&serial->serial_lock, flags); 1203 chars = serial->tx_buffer_count; 1204 spin_unlock_irqrestore(&serial->serial_lock, flags); 1205 1206 return chars; 1207 } 1208 1209 static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file) 1210 { 1211 unsigned int value; 1212 struct hso_serial *serial = get_serial_by_tty(tty); 1213 unsigned long flags; 1214 1215 /* sanity check */ 1216 if (!serial) { 1217 D1("no tty structures"); 1218 return -EINVAL; 1219 } 1220 1221 spin_lock_irqsave(&serial->serial_lock, flags); 1222 value = ((serial->rts_state) ? TIOCM_RTS : 0) | 1223 ((serial->dtr_state) ? TIOCM_DTR : 0); 1224 spin_unlock_irqrestore(&serial->serial_lock, flags); 1225 1226 return value; 1227 } 1228 1229 static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file, 1230 unsigned int set, unsigned int clear) 1231 { 1232 int val = 0; 1233 unsigned long flags; 1234 int if_num; 1235 struct hso_serial *serial = get_serial_by_tty(tty); 1236 1237 /* sanity check */ 1238 if (!serial) { 1239 D1("no tty structures"); 1240 return -EINVAL; 1241 } 1242 if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber; 1243 1244 spin_lock_irqsave(&serial->serial_lock, flags); 1245 if (set & TIOCM_RTS) 1246 serial->rts_state = 1; 1247 if (set & TIOCM_DTR) 1248 serial->dtr_state = 1; 1249 1250 if (clear & TIOCM_RTS) 1251 serial->rts_state = 0; 1252 if (clear & TIOCM_DTR) 1253 serial->dtr_state = 0; 1254 1255 if (serial->dtr_state) 1256 val |= 0x01; 1257 if (serial->rts_state) 1258 val |= 0x02; 1259 1260 spin_unlock_irqrestore(&serial->serial_lock, flags); 1261 1262 return usb_control_msg(serial->parent->usb, 1263 usb_rcvctrlpipe(serial->parent->usb, 0), 0x22, 1264 0x21, val, if_num, NULL, 0, 1265 USB_CTRL_SET_TIMEOUT); 1266 } 1267 1268 /* starts a transmit */ 1269 static void hso_kick_transmit(struct hso_serial *serial) 1270 { 1271 u8 *temp; 1272 unsigned long flags; 1273 int res; 1274 1275 spin_lock_irqsave(&serial->serial_lock, flags); 1276 if (!serial->tx_buffer_count) 1277 goto out; 1278 1279 if (serial->tx_urb_used) 1280 goto out; 1281 1282 /* Wakeup USB interface if necessary */ 1283 if (hso_get_activity(serial->parent) == -EAGAIN) 1284 goto out; 1285 1286 /* Switch pointers around to avoid memcpy */ 1287 temp = serial->tx_buffer; 1288 serial->tx_buffer = serial->tx_data; 1289 serial->tx_data = temp; 1290 serial->tx_data_count = serial->tx_buffer_count; 1291 serial->tx_buffer_count = 0; 1292 1293 /* If temp is set, it means we switched buffers */ 1294 if (temp && serial->write_data) { 1295 res = serial->write_data(serial); 1296 if (res >= 0) 1297 serial->tx_urb_used = 1; 1298 } 1299 out: 1300 spin_unlock_irqrestore(&serial->serial_lock, flags); 1301 } 1302 1303 /* make a request (for reading and writing data to muxed serial port) */ 1304 static int mux_device_request(struct hso_serial *serial, u8 type, u16 port, 1305 struct urb *ctrl_urb, 1306 struct usb_ctrlrequest *ctrl_req, 1307 u8 *ctrl_urb_data, u32 size) 1308 { 1309 int result; 1310 int pipe; 1311 1312 /* Sanity check */ 1313 if (!serial || !ctrl_urb || !ctrl_req) { 1314 printk(KERN_ERR "%s: Wrong arguments\n", __func__); 1315 return -EINVAL; 1316 } 1317 1318 /* initialize */ 1319 ctrl_req->wValue = 0; 1320 ctrl_req->wIndex = hso_port_to_mux(port); 1321 ctrl_req->wLength = size; 1322 1323 if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) { 1324 /* Reading command */ 1325 ctrl_req->bRequestType = USB_DIR_IN | 1326 USB_TYPE_OPTION_VENDOR | 1327 USB_RECIP_INTERFACE; 1328 ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE; 1329 pipe = usb_rcvctrlpipe(serial->parent->usb, 0); 1330 } else { 1331 /* Writing command */ 1332 ctrl_req->bRequestType = USB_DIR_OUT | 1333 USB_TYPE_OPTION_VENDOR | 1334 USB_RECIP_INTERFACE; 1335 ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND; 1336 pipe = usb_sndctrlpipe(serial->parent->usb, 0); 1337 } 1338 /* syslog */ 1339 D2("%s command (%02x) len: %d, port: %d", 1340 type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write", 1341 ctrl_req->bRequestType, ctrl_req->wLength, port); 1342 1343 /* Load ctrl urb */ 1344 ctrl_urb->transfer_flags = 0; 1345 usb_fill_control_urb(ctrl_urb, 1346 serial->parent->usb, 1347 pipe, 1348 (u8 *) ctrl_req, 1349 ctrl_urb_data, size, ctrl_callback, serial); 1350 /* Send it on merry way */ 1351 result = usb_submit_urb(ctrl_urb, GFP_ATOMIC); 1352 if (result) { 1353 dev_err(&ctrl_urb->dev->dev, 1354 "%s failed submit ctrl_urb %d type %d", __func__, 1355 result, type); 1356 return result; 1357 } 1358 1359 /* done */ 1360 return size; 1361 } 1362 1363 /* called by intr_callback when read occurs */ 1364 static int hso_mux_serial_read(struct hso_serial *serial) 1365 { 1366 if (!serial) 1367 return -EINVAL; 1368 1369 /* clean data */ 1370 memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE); 1371 /* make the request */ 1372 1373 if (serial->num_rx_urbs != 1) { 1374 dev_err(&serial->parent->interface->dev, 1375 "ERROR: mux'd reads with multiple buffers " 1376 "not possible\n"); 1377 return 0; 1378 } 1379 return mux_device_request(serial, 1380 USB_CDC_GET_ENCAPSULATED_RESPONSE, 1381 serial->parent->port_spec & HSO_PORT_MASK, 1382 serial->rx_urb[0], 1383 &serial->ctrl_req_rx, 1384 serial->rx_data[0], serial->rx_data_length); 1385 } 1386 1387 /* used for muxed serial port callback (muxed serial read) */ 1388 static void intr_callback(struct urb *urb) 1389 { 1390 struct hso_shared_int *shared_int = urb->context; 1391 struct hso_serial *serial; 1392 unsigned char *port_req; 1393 int status = urb->status; 1394 int i; 1395 1396 usb_mark_last_busy(urb->dev); 1397 1398 /* sanity check */ 1399 if (!shared_int) 1400 return; 1401 1402 /* status check */ 1403 if (status) { 1404 log_usb_status(status, __func__); 1405 return; 1406 } 1407 D4("\n--- Got intr callback 0x%02X ---", status); 1408 1409 /* what request? */ 1410 port_req = urb->transfer_buffer; 1411 D4(" port_req = 0x%.2X\n", *port_req); 1412 /* loop over all muxed ports to find the one sending this */ 1413 for (i = 0; i < 8; i++) { 1414 /* max 8 channels on MUX */ 1415 if (*port_req & (1 << i)) { 1416 serial = get_serial_by_shared_int_and_type(shared_int, 1417 (1 << i)); 1418 if (serial != NULL) { 1419 D1("Pending read interrupt on port %d\n", i); 1420 if (!test_and_set_bit(HSO_SERIAL_FLAG_RX_SENT, 1421 &serial->flags)) { 1422 /* Setup and send a ctrl req read on 1423 * port i */ 1424 hso_mux_serial_read(serial); 1425 } else { 1426 D1("Already pending a read on " 1427 "port %d\n", i); 1428 } 1429 } 1430 } 1431 } 1432 /* Resubmit interrupt urb */ 1433 hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC); 1434 } 1435 1436 /* called for writing to muxed serial port */ 1437 static int hso_mux_serial_write_data(struct hso_serial *serial) 1438 { 1439 if (NULL == serial) 1440 return -EINVAL; 1441 1442 return mux_device_request(serial, 1443 USB_CDC_SEND_ENCAPSULATED_COMMAND, 1444 serial->parent->port_spec & HSO_PORT_MASK, 1445 serial->tx_urb, 1446 &serial->ctrl_req_tx, 1447 serial->tx_data, serial->tx_data_count); 1448 } 1449 1450 /* write callback for Diag and CS port */ 1451 static void hso_std_serial_write_bulk_callback(struct urb *urb) 1452 { 1453 struct hso_serial *serial = urb->context; 1454 int status = urb->status; 1455 1456 /* sanity check */ 1457 if (!serial) { 1458 D1("serial == NULL"); 1459 return; 1460 } 1461 1462 spin_lock(&serial->serial_lock); 1463 serial->tx_urb_used = 0; 1464 spin_unlock(&serial->serial_lock); 1465 if (status) { 1466 log_usb_status(status, __func__); 1467 return; 1468 } 1469 hso_put_activity(serial->parent); 1470 tty_wakeup(serial->tty); 1471 hso_kick_transmit(serial); 1472 1473 D1(" "); 1474 return; 1475 } 1476 1477 /* called for writing diag or CS serial port */ 1478 static int hso_std_serial_write_data(struct hso_serial *serial) 1479 { 1480 int count = serial->tx_data_count; 1481 int result; 1482 1483 usb_fill_bulk_urb(serial->tx_urb, 1484 serial->parent->usb, 1485 usb_sndbulkpipe(serial->parent->usb, 1486 serial->out_endp-> 1487 bEndpointAddress & 0x7F), 1488 serial->tx_data, serial->tx_data_count, 1489 hso_std_serial_write_bulk_callback, serial); 1490 1491 result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC); 1492 if (result) { 1493 dev_warn(&serial->parent->usb->dev, 1494 "Failed to submit urb - res %d\n", result); 1495 return result; 1496 } 1497 1498 return count; 1499 } 1500 1501 /* callback after read or write on muxed serial port */ 1502 static void ctrl_callback(struct urb *urb) 1503 { 1504 struct hso_serial *serial = urb->context; 1505 struct usb_ctrlrequest *req; 1506 int status = urb->status; 1507 1508 /* sanity check */ 1509 if (!serial) 1510 return; 1511 1512 spin_lock(&serial->serial_lock); 1513 serial->tx_urb_used = 0; 1514 spin_unlock(&serial->serial_lock); 1515 if (status) { 1516 log_usb_status(status, __func__); 1517 return; 1518 } 1519 1520 /* what request? */ 1521 req = (struct usb_ctrlrequest *)(urb->setup_packet); 1522 D4("\n--- Got muxed ctrl callback 0x%02X ---", status); 1523 D4("Actual length of urb = %d\n", urb->actual_length); 1524 DUMP1(urb->transfer_buffer, urb->actual_length); 1525 1526 if (req->bRequestType == 1527 (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) { 1528 /* response to a read command */ 1529 if (serial->open_count > 0) { 1530 /* handle RX data the normal way */ 1531 put_rxbuf_data(urb, serial); 1532 } 1533 1534 /* Re issue a read as long as we receive data. */ 1535 if (urb->actual_length != 0) 1536 hso_mux_serial_read(serial); 1537 else 1538 clear_bit(HSO_SERIAL_FLAG_RX_SENT, &serial->flags); 1539 } else { 1540 hso_put_activity(serial->parent); 1541 tty_wakeup(serial->tty); 1542 /* response to a write command */ 1543 hso_kick_transmit(serial); 1544 } 1545 } 1546 1547 /* handle RX data for serial port */ 1548 static void put_rxbuf_data(struct urb *urb, struct hso_serial *serial) 1549 { 1550 struct tty_struct *tty = serial->tty; 1551 1552 /* Sanity check */ 1553 if (urb == NULL || serial == NULL) { 1554 D1("serial = NULL"); 1555 return; 1556 } 1557 1558 /* Push data to tty */ 1559 if (tty && urb->actual_length) { 1560 D1("data to push to tty"); 1561 tty_insert_flip_string(tty, urb->transfer_buffer, 1562 urb->actual_length); 1563 tty_flip_buffer_push(tty); 1564 } 1565 } 1566 1567 /* read callback for Diag and CS port */ 1568 static void hso_std_serial_read_bulk_callback(struct urb *urb) 1569 { 1570 struct hso_serial *serial = urb->context; 1571 int result; 1572 int status = urb->status; 1573 1574 /* sanity check */ 1575 if (!serial) { 1576 D1("serial == NULL"); 1577 return; 1578 } else if (status) { 1579 log_usb_status(status, __func__); 1580 return; 1581 } 1582 1583 D4("\n--- Got serial_read_bulk callback %02x ---", status); 1584 D1("Actual length = %d\n", urb->actual_length); 1585 DUMP1(urb->transfer_buffer, urb->actual_length); 1586 1587 /* Anyone listening? */ 1588 if (serial->open_count == 0) 1589 return; 1590 1591 if (status == 0) { 1592 if (serial->parent->port_spec & HSO_INFO_CRC_BUG) { 1593 u32 rest; 1594 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF }; 1595 rest = 1596 urb->actual_length % 1597 serial->in_endp->wMaxPacketSize; 1598 if (((rest == 5) || (rest == 6)) 1599 && !memcmp(((u8 *) urb->transfer_buffer) + 1600 urb->actual_length - 4, crc_check, 4)) { 1601 urb->actual_length -= 4; 1602 } 1603 } 1604 /* Valid data, handle RX data */ 1605 put_rxbuf_data(urb, serial); 1606 } else if (status == -ENOENT || status == -ECONNRESET) { 1607 /* Unlinked - check for throttled port. */ 1608 D2("Port %d, successfully unlinked urb", serial->minor); 1609 } else { 1610 D2("Port %d, status = %d for read urb", serial->minor, status); 1611 return; 1612 } 1613 1614 usb_mark_last_busy(urb->dev); 1615 1616 /* We are done with this URB, resubmit it. Prep the USB to wait for 1617 * another frame */ 1618 usb_fill_bulk_urb(urb, serial->parent->usb, 1619 usb_rcvbulkpipe(serial->parent->usb, 1620 serial->in_endp-> 1621 bEndpointAddress & 0x7F), 1622 urb->transfer_buffer, serial->rx_data_length, 1623 hso_std_serial_read_bulk_callback, serial); 1624 /* Give this to the USB subsystem so it can tell us when more data 1625 * arrives. */ 1626 result = usb_submit_urb(urb, GFP_ATOMIC); 1627 if (result) { 1628 dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d", 1629 __func__, result); 1630 } 1631 } 1632 1633 /* Base driver functions */ 1634 1635 static void hso_log_port(struct hso_device *hso_dev) 1636 { 1637 char *port_type; 1638 char port_dev[20]; 1639 1640 switch (hso_dev->port_spec & HSO_PORT_MASK) { 1641 case HSO_PORT_CONTROL: 1642 port_type = "Control"; 1643 break; 1644 case HSO_PORT_APP: 1645 port_type = "Application"; 1646 break; 1647 case HSO_PORT_GPS: 1648 port_type = "GPS"; 1649 break; 1650 case HSO_PORT_GPS_CONTROL: 1651 port_type = "GPS control"; 1652 break; 1653 case HSO_PORT_APP2: 1654 port_type = "Application2"; 1655 break; 1656 case HSO_PORT_PCSC: 1657 port_type = "PCSC"; 1658 break; 1659 case HSO_PORT_DIAG: 1660 port_type = "Diagnostic"; 1661 break; 1662 case HSO_PORT_DIAG2: 1663 port_type = "Diagnostic2"; 1664 break; 1665 case HSO_PORT_MODEM: 1666 port_type = "Modem"; 1667 break; 1668 case HSO_PORT_NETWORK: 1669 port_type = "Network"; 1670 break; 1671 default: 1672 port_type = "Unknown"; 1673 break; 1674 } 1675 if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { 1676 sprintf(port_dev, "%s", dev2net(hso_dev)->net->name); 1677 } else 1678 sprintf(port_dev, "/dev/%s%d", tty_filename, 1679 dev2ser(hso_dev)->minor); 1680 1681 dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n", 1682 port_type, port_dev); 1683 } 1684 1685 static int hso_start_net_device(struct hso_device *hso_dev) 1686 { 1687 int i, result = 0; 1688 struct hso_net *hso_net = dev2net(hso_dev); 1689 1690 if (!hso_net) 1691 return -ENODEV; 1692 1693 /* send URBs for all read buffers */ 1694 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { 1695 1696 /* Prep a receive URB */ 1697 usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i], 1698 hso_dev->usb, 1699 usb_rcvbulkpipe(hso_dev->usb, 1700 hso_net->in_endp-> 1701 bEndpointAddress & 0x7F), 1702 hso_net->mux_bulk_rx_buf_pool[i], 1703 MUX_BULK_RX_BUF_SIZE, read_bulk_callback, 1704 hso_net); 1705 1706 /* Put it out there so the device can send us stuff */ 1707 result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i], 1708 GFP_NOIO); 1709 if (result) 1710 dev_warn(&hso_dev->usb->dev, 1711 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__, 1712 i, result); 1713 } 1714 1715 return result; 1716 } 1717 1718 static int hso_stop_net_device(struct hso_device *hso_dev) 1719 { 1720 int i; 1721 struct hso_net *hso_net = dev2net(hso_dev); 1722 1723 if (!hso_net) 1724 return -ENODEV; 1725 1726 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { 1727 if (hso_net->mux_bulk_rx_urb_pool[i]) 1728 usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]); 1729 1730 } 1731 if (hso_net->mux_bulk_tx_urb) 1732 usb_kill_urb(hso_net->mux_bulk_tx_urb); 1733 1734 return 0; 1735 } 1736 1737 static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags) 1738 { 1739 int i, result = 0; 1740 struct hso_serial *serial = dev2ser(hso_dev); 1741 1742 if (!serial) 1743 return -ENODEV; 1744 1745 /* If it is not the MUX port fill in and submit a bulk urb (already 1746 * allocated in hso_serial_start) */ 1747 if (!(serial->parent->port_spec & HSO_INTF_MUX)) { 1748 for (i = 0; i < serial->num_rx_urbs; i++) { 1749 usb_fill_bulk_urb(serial->rx_urb[i], 1750 serial->parent->usb, 1751 usb_rcvbulkpipe(serial->parent->usb, 1752 serial->in_endp-> 1753 bEndpointAddress & 1754 0x7F), 1755 serial->rx_data[i], 1756 serial->rx_data_length, 1757 hso_std_serial_read_bulk_callback, 1758 serial); 1759 result = usb_submit_urb(serial->rx_urb[i], flags); 1760 if (result) { 1761 dev_warn(&serial->parent->usb->dev, 1762 "Failed to submit urb - res %d\n", 1763 result); 1764 break; 1765 } 1766 } 1767 } else { 1768 mutex_lock(&serial->shared_int->shared_int_lock); 1769 if (!serial->shared_int->use_count) { 1770 result = 1771 hso_mux_submit_intr_urb(serial->shared_int, 1772 hso_dev->usb, flags); 1773 } 1774 serial->shared_int->use_count++; 1775 mutex_unlock(&serial->shared_int->shared_int_lock); 1776 } 1777 1778 return result; 1779 } 1780 1781 static int hso_stop_serial_device(struct hso_device *hso_dev) 1782 { 1783 int i; 1784 struct hso_serial *serial = dev2ser(hso_dev); 1785 1786 if (!serial) 1787 return -ENODEV; 1788 1789 for (i = 0; i < serial->num_rx_urbs; i++) { 1790 if (serial->rx_urb[i]) 1791 usb_kill_urb(serial->rx_urb[i]); 1792 } 1793 1794 if (serial->tx_urb) 1795 usb_kill_urb(serial->tx_urb); 1796 1797 if (serial->shared_int) { 1798 mutex_lock(&serial->shared_int->shared_int_lock); 1799 if (serial->shared_int->use_count && 1800 (--serial->shared_int->use_count == 0)) { 1801 struct urb *urb; 1802 1803 urb = serial->shared_int->shared_intr_urb; 1804 if (urb) 1805 usb_kill_urb(urb); 1806 } 1807 mutex_unlock(&serial->shared_int->shared_int_lock); 1808 } 1809 1810 return 0; 1811 } 1812 1813 static void hso_serial_common_free(struct hso_serial *serial) 1814 { 1815 int i; 1816 1817 if (serial->parent->dev) 1818 device_remove_file(serial->parent->dev, &dev_attr_hsotype); 1819 1820 tty_unregister_device(tty_drv, serial->minor); 1821 1822 for (i = 0; i < serial->num_rx_urbs; i++) { 1823 /* unlink and free RX URB */ 1824 usb_free_urb(serial->rx_urb[i]); 1825 /* free the RX buffer */ 1826 kfree(serial->rx_data[i]); 1827 } 1828 1829 /* unlink and free TX URB */ 1830 usb_free_urb(serial->tx_urb); 1831 kfree(serial->tx_data); 1832 } 1833 1834 static int hso_serial_common_create(struct hso_serial *serial, int num_urbs, 1835 int rx_size, int tx_size) 1836 { 1837 struct device *dev; 1838 int minor; 1839 int i; 1840 1841 minor = get_free_serial_index(); 1842 if (minor < 0) 1843 goto exit; 1844 1845 /* register our minor number */ 1846 serial->parent->dev = tty_register_device(tty_drv, minor, 1847 &serial->parent->interface->dev); 1848 dev = serial->parent->dev; 1849 dev->driver_data = serial->parent; 1850 i = device_create_file(dev, &dev_attr_hsotype); 1851 1852 /* fill in specific data for later use */ 1853 serial->minor = minor; 1854 serial->magic = HSO_SERIAL_MAGIC; 1855 spin_lock_init(&serial->serial_lock); 1856 serial->num_rx_urbs = num_urbs; 1857 1858 /* RX, allocate urb and initialize */ 1859 1860 /* prepare our RX buffer */ 1861 serial->rx_data_length = rx_size; 1862 for (i = 0; i < serial->num_rx_urbs; i++) { 1863 serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL); 1864 if (!serial->rx_urb[i]) { 1865 dev_err(dev, "Could not allocate urb?\n"); 1866 goto exit; 1867 } 1868 serial->rx_urb[i]->transfer_buffer = NULL; 1869 serial->rx_urb[i]->transfer_buffer_length = 0; 1870 serial->rx_data[i] = kzalloc(serial->rx_data_length, 1871 GFP_KERNEL); 1872 if (!serial->rx_data[i]) { 1873 dev_err(dev, "%s - Out of memory\n", __func__); 1874 goto exit; 1875 } 1876 } 1877 1878 /* TX, allocate urb and initialize */ 1879 serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 1880 if (!serial->tx_urb) { 1881 dev_err(dev, "Could not allocate urb?\n"); 1882 goto exit; 1883 } 1884 serial->tx_urb->transfer_buffer = NULL; 1885 serial->tx_urb->transfer_buffer_length = 0; 1886 /* prepare our TX buffer */ 1887 serial->tx_data_count = 0; 1888 serial->tx_buffer_count = 0; 1889 serial->tx_data_length = tx_size; 1890 serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL); 1891 if (!serial->tx_data) { 1892 dev_err(dev, "%s - Out of memory", __func__); 1893 goto exit; 1894 } 1895 serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL); 1896 if (!serial->tx_buffer) { 1897 dev_err(dev, "%s - Out of memory", __func__); 1898 goto exit; 1899 } 1900 1901 return 0; 1902 exit: 1903 hso_serial_common_free(serial); 1904 return -1; 1905 } 1906 1907 /* Frees a general hso device */ 1908 static void hso_free_device(struct hso_device *hso_dev) 1909 { 1910 kfree(hso_dev); 1911 } 1912 1913 /* Creates a general hso device */ 1914 static struct hso_device *hso_create_device(struct usb_interface *intf, 1915 int port_spec) 1916 { 1917 struct hso_device *hso_dev; 1918 1919 hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC); 1920 if (!hso_dev) 1921 return NULL; 1922 1923 hso_dev->port_spec = port_spec; 1924 hso_dev->usb = interface_to_usbdev(intf); 1925 hso_dev->interface = intf; 1926 kref_init(&hso_dev->ref); 1927 mutex_init(&hso_dev->mutex); 1928 1929 INIT_WORK(&hso_dev->async_get_intf, async_get_intf); 1930 INIT_WORK(&hso_dev->async_put_intf, async_put_intf); 1931 1932 return hso_dev; 1933 } 1934 1935 /* Removes a network device in the network device table */ 1936 static int remove_net_device(struct hso_device *hso_dev) 1937 { 1938 int i; 1939 1940 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { 1941 if (network_table[i] == hso_dev) { 1942 network_table[i] = NULL; 1943 break; 1944 } 1945 } 1946 if (i == HSO_MAX_NET_DEVICES) 1947 return -1; 1948 return 0; 1949 } 1950 1951 /* Frees our network device */ 1952 static void hso_free_net_device(struct hso_device *hso_dev) 1953 { 1954 int i; 1955 struct hso_net *hso_net = dev2net(hso_dev); 1956 1957 if (!hso_net) 1958 return; 1959 1960 /* start freeing */ 1961 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { 1962 usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]); 1963 kfree(hso_net->mux_bulk_rx_buf_pool[i]); 1964 } 1965 usb_free_urb(hso_net->mux_bulk_tx_urb); 1966 kfree(hso_net->mux_bulk_tx_buf); 1967 1968 remove_net_device(hso_net->parent); 1969 1970 if (hso_net->net) { 1971 unregister_netdev(hso_net->net); 1972 free_netdev(hso_net->net); 1973 } 1974 1975 hso_free_device(hso_dev); 1976 } 1977 1978 /* initialize the network interface */ 1979 static void hso_net_init(struct net_device *net) 1980 { 1981 struct hso_net *hso_net = netdev_priv(net); 1982 1983 D1("sizeof hso_net is %d", (int)sizeof(*hso_net)); 1984 1985 /* fill in the other fields */ 1986 net->open = hso_net_open; 1987 net->stop = hso_net_close; 1988 net->hard_start_xmit = hso_net_start_xmit; 1989 net->tx_timeout = hso_net_tx_timeout; 1990 net->watchdog_timeo = HSO_NET_TX_TIMEOUT; 1991 net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST; 1992 net->type = ARPHRD_NONE; 1993 net->mtu = DEFAULT_MTU - 14; 1994 net->tx_queue_len = 10; 1995 SET_ETHTOOL_OPS(net, &ops); 1996 1997 /* and initialize the semaphore */ 1998 spin_lock_init(&hso_net->net_lock); 1999 } 2000 2001 /* Adds a network device in the network device table */ 2002 static int add_net_device(struct hso_device *hso_dev) 2003 { 2004 int i; 2005 2006 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { 2007 if (network_table[i] == NULL) { 2008 network_table[i] = hso_dev; 2009 break; 2010 } 2011 } 2012 if (i == HSO_MAX_NET_DEVICES) 2013 return -1; 2014 return 0; 2015 } 2016 2017 static int hso_radio_toggle(void *data, enum rfkill_state state) 2018 { 2019 struct hso_device *hso_dev = data; 2020 int enabled = (state == RFKILL_STATE_ON); 2021 int rv; 2022 2023 mutex_lock(&hso_dev->mutex); 2024 if (hso_dev->usb_gone) 2025 rv = 0; 2026 else 2027 rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0), 2028 enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0, 2029 USB_CTRL_SET_TIMEOUT); 2030 mutex_unlock(&hso_dev->mutex); 2031 return rv; 2032 } 2033 2034 /* Creates and sets up everything for rfkill */ 2035 static void hso_create_rfkill(struct hso_device *hso_dev, 2036 struct usb_interface *interface) 2037 { 2038 struct hso_net *hso_net = dev2net(hso_dev); 2039 struct device *dev = hso_dev->dev; 2040 char *rfkn; 2041 2042 hso_net->rfkill = rfkill_allocate(&interface_to_usbdev(interface)->dev, 2043 RFKILL_TYPE_WLAN); 2044 if (!hso_net->rfkill) { 2045 dev_err(dev, "%s - Out of memory", __func__); 2046 return; 2047 } 2048 rfkn = kzalloc(20, GFP_KERNEL); 2049 if (!rfkn) { 2050 rfkill_free(hso_net->rfkill); 2051 dev_err(dev, "%s - Out of memory", __func__); 2052 return; 2053 } 2054 snprintf(rfkn, 20, "hso-%d", 2055 interface->altsetting->desc.bInterfaceNumber); 2056 hso_net->rfkill->name = rfkn; 2057 hso_net->rfkill->state = RFKILL_STATE_ON; 2058 hso_net->rfkill->data = hso_dev; 2059 hso_net->rfkill->toggle_radio = hso_radio_toggle; 2060 if (rfkill_register(hso_net->rfkill) < 0) { 2061 kfree(rfkn); 2062 hso_net->rfkill->name = NULL; 2063 rfkill_free(hso_net->rfkill); 2064 dev_err(dev, "%s - Failed to register rfkill", __func__); 2065 return; 2066 } 2067 } 2068 2069 /* Creates our network device */ 2070 static struct hso_device *hso_create_net_device(struct usb_interface *interface) 2071 { 2072 int result, i; 2073 struct net_device *net; 2074 struct hso_net *hso_net; 2075 struct hso_device *hso_dev; 2076 2077 hso_dev = hso_create_device(interface, HSO_INTF_MUX | HSO_PORT_NETWORK); 2078 if (!hso_dev) 2079 return NULL; 2080 2081 /* allocate our network device, then we can put in our private data */ 2082 /* call hso_net_init to do the basic initialization */ 2083 net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init); 2084 if (!net) { 2085 dev_err(&interface->dev, "Unable to create ethernet device\n"); 2086 goto exit; 2087 } 2088 2089 hso_net = netdev_priv(net); 2090 2091 hso_dev->port_data.dev_net = hso_net; 2092 hso_net->net = net; 2093 hso_net->parent = hso_dev; 2094 2095 hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, 2096 USB_DIR_IN); 2097 if (!hso_net->in_endp) { 2098 dev_err(&interface->dev, "Can't find BULK IN endpoint\n"); 2099 goto exit; 2100 } 2101 hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, 2102 USB_DIR_OUT); 2103 if (!hso_net->out_endp) { 2104 dev_err(&interface->dev, "Can't find BULK OUT endpoint\n"); 2105 goto exit; 2106 } 2107 SET_NETDEV_DEV(net, &interface->dev); 2108 2109 /* registering our net device */ 2110 result = register_netdev(net); 2111 if (result) { 2112 dev_err(&interface->dev, "Failed to register device\n"); 2113 goto exit; 2114 } 2115 2116 /* start allocating */ 2117 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { 2118 hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL); 2119 if (!hso_net->mux_bulk_rx_urb_pool[i]) { 2120 dev_err(&interface->dev, "Could not allocate rx urb\n"); 2121 goto exit; 2122 } 2123 hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE, 2124 GFP_KERNEL); 2125 if (!hso_net->mux_bulk_rx_buf_pool[i]) { 2126 dev_err(&interface->dev, "Could not allocate rx buf\n"); 2127 goto exit; 2128 } 2129 } 2130 hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL); 2131 if (!hso_net->mux_bulk_tx_urb) { 2132 dev_err(&interface->dev, "Could not allocate tx urb\n"); 2133 goto exit; 2134 } 2135 hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL); 2136 if (!hso_net->mux_bulk_tx_buf) { 2137 dev_err(&interface->dev, "Could not allocate tx buf\n"); 2138 goto exit; 2139 } 2140 2141 add_net_device(hso_dev); 2142 2143 hso_log_port(hso_dev); 2144 2145 hso_create_rfkill(hso_dev, interface); 2146 2147 return hso_dev; 2148 exit: 2149 hso_free_net_device(hso_dev); 2150 return NULL; 2151 } 2152 2153 /* Frees an AT channel ( goes for both mux and non-mux ) */ 2154 static void hso_free_serial_device(struct hso_device *hso_dev) 2155 { 2156 struct hso_serial *serial = dev2ser(hso_dev); 2157 2158 if (!serial) 2159 return; 2160 set_serial_by_index(serial->minor, NULL); 2161 2162 hso_serial_common_free(serial); 2163 2164 if (serial->shared_int) { 2165 mutex_lock(&serial->shared_int->shared_int_lock); 2166 if (--serial->shared_int->ref_count == 0) 2167 hso_free_shared_int(serial->shared_int); 2168 else 2169 mutex_unlock(&serial->shared_int->shared_int_lock); 2170 } 2171 kfree(serial); 2172 hso_free_device(hso_dev); 2173 } 2174 2175 /* Creates a bulk AT channel */ 2176 static struct hso_device *hso_create_bulk_serial_device( 2177 struct usb_interface *interface, int port) 2178 { 2179 struct hso_device *hso_dev; 2180 struct hso_serial *serial; 2181 int num_urbs; 2182 2183 hso_dev = hso_create_device(interface, port); 2184 if (!hso_dev) 2185 return NULL; 2186 2187 serial = kzalloc(sizeof(*serial), GFP_KERNEL); 2188 if (!serial) 2189 goto exit; 2190 2191 serial->parent = hso_dev; 2192 hso_dev->port_data.dev_serial = serial; 2193 2194 if (port & HSO_PORT_MODEM) 2195 num_urbs = 2; 2196 else 2197 num_urbs = 1; 2198 2199 if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE, 2200 BULK_URB_TX_SIZE)) 2201 goto exit; 2202 2203 serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, 2204 USB_DIR_IN); 2205 if (!serial->in_endp) { 2206 dev_err(&interface->dev, "Failed to find BULK IN ep\n"); 2207 goto exit; 2208 } 2209 2210 if (! 2211 (serial->out_endp = 2212 hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) { 2213 dev_err(&interface->dev, "Failed to find BULK IN ep\n"); 2214 goto exit; 2215 } 2216 2217 serial->write_data = hso_std_serial_write_data; 2218 2219 /* and record this serial */ 2220 set_serial_by_index(serial->minor, serial); 2221 2222 /* setup the proc dirs and files if needed */ 2223 hso_log_port(hso_dev); 2224 2225 /* done, return it */ 2226 return hso_dev; 2227 exit: 2228 if (hso_dev && serial) 2229 hso_serial_common_free(serial); 2230 kfree(serial); 2231 hso_free_device(hso_dev); 2232 return NULL; 2233 } 2234 2235 /* Creates a multiplexed AT channel */ 2236 static 2237 struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface, 2238 int port, 2239 struct hso_shared_int *mux) 2240 { 2241 struct hso_device *hso_dev; 2242 struct hso_serial *serial; 2243 int port_spec; 2244 2245 port_spec = HSO_INTF_MUX; 2246 port_spec &= ~HSO_PORT_MASK; 2247 2248 port_spec |= hso_mux_to_port(port); 2249 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT) 2250 return NULL; 2251 2252 hso_dev = hso_create_device(interface, port_spec); 2253 if (!hso_dev) 2254 return NULL; 2255 2256 serial = kzalloc(sizeof(*serial), GFP_KERNEL); 2257 if (!serial) 2258 goto exit; 2259 2260 hso_dev->port_data.dev_serial = serial; 2261 serial->parent = hso_dev; 2262 2263 if (hso_serial_common_create 2264 (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE)) 2265 goto exit; 2266 2267 serial->tx_data_length--; 2268 serial->write_data = hso_mux_serial_write_data; 2269 2270 serial->shared_int = mux; 2271 mutex_lock(&serial->shared_int->shared_int_lock); 2272 serial->shared_int->ref_count++; 2273 mutex_unlock(&serial->shared_int->shared_int_lock); 2274 2275 /* and record this serial */ 2276 set_serial_by_index(serial->minor, serial); 2277 2278 /* setup the proc dirs and files if needed */ 2279 hso_log_port(hso_dev); 2280 2281 /* done, return it */ 2282 return hso_dev; 2283 2284 exit: 2285 if (serial) { 2286 tty_unregister_device(tty_drv, serial->minor); 2287 kfree(serial); 2288 } 2289 if (hso_dev) 2290 hso_free_device(hso_dev); 2291 return NULL; 2292 2293 } 2294 2295 static void hso_free_shared_int(struct hso_shared_int *mux) 2296 { 2297 usb_free_urb(mux->shared_intr_urb); 2298 kfree(mux->shared_intr_buf); 2299 mutex_unlock(&mux->shared_int_lock); 2300 kfree(mux); 2301 } 2302 2303 static 2304 struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface) 2305 { 2306 struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL); 2307 2308 if (!mux) 2309 return NULL; 2310 2311 mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT, 2312 USB_DIR_IN); 2313 if (!mux->intr_endp) { 2314 dev_err(&interface->dev, "Can't find INT IN endpoint\n"); 2315 goto exit; 2316 } 2317 2318 mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL); 2319 if (!mux->shared_intr_urb) { 2320 dev_err(&interface->dev, "Could not allocate intr urb?"); 2321 goto exit; 2322 } 2323 mux->shared_intr_buf = kzalloc(mux->intr_endp->wMaxPacketSize, 2324 GFP_KERNEL); 2325 if (!mux->shared_intr_buf) { 2326 dev_err(&interface->dev, "Could not allocate intr buf?"); 2327 goto exit; 2328 } 2329 2330 mutex_init(&mux->shared_int_lock); 2331 2332 return mux; 2333 2334 exit: 2335 kfree(mux->shared_intr_buf); 2336 usb_free_urb(mux->shared_intr_urb); 2337 kfree(mux); 2338 return NULL; 2339 } 2340 2341 /* Gets the port spec for a certain interface */ 2342 static int hso_get_config_data(struct usb_interface *interface) 2343 { 2344 struct usb_device *usbdev = interface_to_usbdev(interface); 2345 u8 config_data[17]; 2346 u32 if_num = interface->altsetting->desc.bInterfaceNumber; 2347 s32 result; 2348 2349 if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), 2350 0x86, 0xC0, 0, 0, config_data, 17, 2351 USB_CTRL_SET_TIMEOUT) != 0x11) { 2352 return -EIO; 2353 } 2354 2355 switch (config_data[if_num]) { 2356 case 0x0: 2357 result = 0; 2358 break; 2359 case 0x1: 2360 result = HSO_PORT_DIAG; 2361 break; 2362 case 0x2: 2363 result = HSO_PORT_GPS; 2364 break; 2365 case 0x3: 2366 result = HSO_PORT_GPS_CONTROL; 2367 break; 2368 case 0x4: 2369 result = HSO_PORT_APP; 2370 break; 2371 case 0x5: 2372 result = HSO_PORT_APP2; 2373 break; 2374 case 0x6: 2375 result = HSO_PORT_CONTROL; 2376 break; 2377 case 0x7: 2378 result = HSO_PORT_NETWORK; 2379 break; 2380 case 0x8: 2381 result = HSO_PORT_MODEM; 2382 break; 2383 case 0x9: 2384 result = HSO_PORT_MSD; 2385 break; 2386 case 0xa: 2387 result = HSO_PORT_PCSC; 2388 break; 2389 case 0xb: 2390 result = HSO_PORT_VOICE; 2391 break; 2392 default: 2393 result = 0; 2394 } 2395 2396 if (result) 2397 result |= HSO_INTF_BULK; 2398 2399 if (config_data[16] & 0x1) 2400 result |= HSO_INFO_CRC_BUG; 2401 2402 return result; 2403 } 2404 2405 /* called once for each interface upon device insertion */ 2406 static int hso_probe(struct usb_interface *interface, 2407 const struct usb_device_id *id) 2408 { 2409 int mux, i, if_num, port_spec; 2410 unsigned char port_mask; 2411 struct hso_device *hso_dev = NULL; 2412 struct hso_shared_int *shared_int; 2413 struct hso_device *tmp_dev = NULL; 2414 2415 if_num = interface->altsetting->desc.bInterfaceNumber; 2416 2417 /* Get the interface/port specification from either driver_info or from 2418 * the device itself */ 2419 if (id->driver_info) 2420 port_spec = ((u32 *)(id->driver_info))[if_num]; 2421 else 2422 port_spec = hso_get_config_data(interface); 2423 2424 if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) { 2425 dev_err(&interface->dev, "Not our interface\n"); 2426 return -ENODEV; 2427 } 2428 /* Check if we need to switch to alt interfaces prior to port 2429 * configuration */ 2430 if (interface->num_altsetting > 1) 2431 usb_set_interface(interface_to_usbdev(interface), if_num, 1); 2432 interface->needs_remote_wakeup = 1; 2433 2434 /* Allocate new hso device(s) */ 2435 switch (port_spec & HSO_INTF_MASK) { 2436 case HSO_INTF_MUX: 2437 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { 2438 /* Create the network device */ 2439 if (!disable_net) { 2440 hso_dev = hso_create_net_device(interface); 2441 if (!hso_dev) 2442 goto exit; 2443 tmp_dev = hso_dev; 2444 } 2445 } 2446 2447 if (hso_get_mux_ports(interface, &port_mask)) 2448 /* TODO: de-allocate everything */ 2449 goto exit; 2450 2451 shared_int = hso_create_shared_int(interface); 2452 if (!shared_int) 2453 goto exit; 2454 2455 for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) { 2456 if (port_mask & i) { 2457 hso_dev = hso_create_mux_serial_device( 2458 interface, i, shared_int); 2459 if (!hso_dev) 2460 goto exit; 2461 } 2462 } 2463 2464 if (tmp_dev) 2465 hso_dev = tmp_dev; 2466 break; 2467 2468 case HSO_INTF_BULK: 2469 /* It's a regular bulk interface */ 2470 if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) 2471 && !disable_net) 2472 hso_dev = hso_create_net_device(interface); 2473 else 2474 hso_dev = 2475 hso_create_bulk_serial_device(interface, port_spec); 2476 if (!hso_dev) 2477 goto exit; 2478 break; 2479 default: 2480 goto exit; 2481 } 2482 2483 usb_driver_claim_interface(&hso_driver, interface, hso_dev); 2484 2485 /* save our data pointer in this device */ 2486 usb_set_intfdata(interface, hso_dev); 2487 2488 /* done */ 2489 return 0; 2490 exit: 2491 hso_free_interface(interface); 2492 return -ENODEV; 2493 } 2494 2495 /* device removed, cleaning up */ 2496 static void hso_disconnect(struct usb_interface *interface) 2497 { 2498 hso_free_interface(interface); 2499 2500 /* remove reference of our private data */ 2501 usb_set_intfdata(interface, NULL); 2502 2503 usb_driver_release_interface(&hso_driver, interface); 2504 } 2505 2506 static void async_get_intf(struct work_struct *data) 2507 { 2508 struct hso_device *hso_dev = 2509 container_of(data, struct hso_device, async_get_intf); 2510 usb_autopm_get_interface(hso_dev->interface); 2511 } 2512 2513 static void async_put_intf(struct work_struct *data) 2514 { 2515 struct hso_device *hso_dev = 2516 container_of(data, struct hso_device, async_put_intf); 2517 usb_autopm_put_interface(hso_dev->interface); 2518 } 2519 2520 static int hso_get_activity(struct hso_device *hso_dev) 2521 { 2522 if (hso_dev->usb->state == USB_STATE_SUSPENDED) { 2523 if (!hso_dev->is_active) { 2524 hso_dev->is_active = 1; 2525 schedule_work(&hso_dev->async_get_intf); 2526 } 2527 } 2528 2529 if (hso_dev->usb->state != USB_STATE_CONFIGURED) 2530 return -EAGAIN; 2531 2532 usb_mark_last_busy(hso_dev->usb); 2533 2534 return 0; 2535 } 2536 2537 static int hso_put_activity(struct hso_device *hso_dev) 2538 { 2539 if (hso_dev->usb->state != USB_STATE_SUSPENDED) { 2540 if (hso_dev->is_active) { 2541 hso_dev->is_active = 0; 2542 schedule_work(&hso_dev->async_put_intf); 2543 return -EAGAIN; 2544 } 2545 } 2546 hso_dev->is_active = 0; 2547 return 0; 2548 } 2549 2550 /* called by kernel when we need to suspend device */ 2551 static int hso_suspend(struct usb_interface *iface, pm_message_t message) 2552 { 2553 int i, result; 2554 2555 /* Stop all serial ports */ 2556 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { 2557 if (serial_table[i] && (serial_table[i]->interface == iface)) { 2558 result = hso_stop_serial_device(serial_table[i]); 2559 if (result) 2560 goto out; 2561 } 2562 } 2563 2564 /* Stop all network ports */ 2565 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { 2566 if (network_table[i] && 2567 (network_table[i]->interface == iface)) { 2568 result = hso_stop_net_device(network_table[i]); 2569 if (result) 2570 goto out; 2571 } 2572 } 2573 2574 out: 2575 return 0; 2576 } 2577 2578 /* called by kernel when we need to resume device */ 2579 static int hso_resume(struct usb_interface *iface) 2580 { 2581 int i, result = 0; 2582 struct hso_net *hso_net; 2583 2584 /* Start all serial ports */ 2585 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { 2586 if (serial_table[i] && (serial_table[i]->interface == iface)) { 2587 if (dev2ser(serial_table[i])->open_count) { 2588 result = 2589 hso_start_serial_device(serial_table[i], GFP_NOIO); 2590 hso_kick_transmit(dev2ser(serial_table[i])); 2591 if (result) 2592 goto out; 2593 } 2594 } 2595 } 2596 2597 /* Start all network ports */ 2598 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { 2599 if (network_table[i] && 2600 (network_table[i]->interface == iface)) { 2601 hso_net = dev2net(network_table[i]); 2602 /* First transmit any lingering data, then restart the 2603 * device. */ 2604 if (hso_net->skb_tx_buf) { 2605 dev_dbg(&iface->dev, 2606 "Transmitting lingering data\n"); 2607 hso_net_start_xmit(hso_net->skb_tx_buf, 2608 hso_net->net); 2609 } 2610 result = hso_start_net_device(network_table[i]); 2611 if (result) 2612 goto out; 2613 } 2614 } 2615 2616 out: 2617 return result; 2618 } 2619 2620 static void hso_serial_ref_free(struct kref *ref) 2621 { 2622 struct hso_device *hso_dev = container_of(ref, struct hso_device, ref); 2623 2624 hso_free_serial_device(hso_dev); 2625 } 2626 2627 static void hso_free_interface(struct usb_interface *interface) 2628 { 2629 struct hso_serial *hso_dev; 2630 int i; 2631 2632 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { 2633 if (serial_table[i] 2634 && (serial_table[i]->interface == interface)) { 2635 hso_dev = dev2ser(serial_table[i]); 2636 if (hso_dev->tty) 2637 tty_hangup(hso_dev->tty); 2638 mutex_lock(&hso_dev->parent->mutex); 2639 hso_dev->parent->usb_gone = 1; 2640 mutex_unlock(&hso_dev->parent->mutex); 2641 kref_put(&serial_table[i]->ref, hso_serial_ref_free); 2642 } 2643 } 2644 2645 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { 2646 if (network_table[i] 2647 && (network_table[i]->interface == interface)) { 2648 struct rfkill *rfk = dev2net(network_table[i])->rfkill; 2649 /* hso_stop_net_device doesn't stop the net queue since 2650 * traffic needs to start it again when suspended */ 2651 netif_stop_queue(dev2net(network_table[i])->net); 2652 hso_stop_net_device(network_table[i]); 2653 cancel_work_sync(&network_table[i]->async_put_intf); 2654 cancel_work_sync(&network_table[i]->async_get_intf); 2655 if(rfk) 2656 rfkill_unregister(rfk); 2657 hso_free_net_device(network_table[i]); 2658 } 2659 } 2660 } 2661 2662 /* Helper functions */ 2663 2664 /* Get the endpoint ! */ 2665 static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, 2666 int type, int dir) 2667 { 2668 int i; 2669 struct usb_host_interface *iface = intf->cur_altsetting; 2670 struct usb_endpoint_descriptor *endp; 2671 2672 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 2673 endp = &iface->endpoint[i].desc; 2674 if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) && 2675 ((endp->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == type)) 2676 return endp; 2677 } 2678 2679 return NULL; 2680 } 2681 2682 /* Get the byte that describes which ports are enabled */ 2683 static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports) 2684 { 2685 int i; 2686 struct usb_host_interface *iface = intf->cur_altsetting; 2687 2688 if (iface->extralen == 3) { 2689 *ports = iface->extra[2]; 2690 return 0; 2691 } 2692 2693 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 2694 if (iface->endpoint[i].extralen == 3) { 2695 *ports = iface->endpoint[i].extra[2]; 2696 return 0; 2697 } 2698 } 2699 2700 return -1; 2701 } 2702 2703 /* interrupt urb needs to be submitted, used for serial read of muxed port */ 2704 static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int, 2705 struct usb_device *usb, gfp_t gfp) 2706 { 2707 int result; 2708 2709 usb_fill_int_urb(shared_int->shared_intr_urb, usb, 2710 usb_rcvintpipe(usb, 2711 shared_int->intr_endp->bEndpointAddress & 0x7F), 2712 shared_int->shared_intr_buf, 2713 shared_int->intr_endp->wMaxPacketSize, 2714 intr_callback, shared_int, 2715 shared_int->intr_endp->bInterval); 2716 2717 result = usb_submit_urb(shared_int->shared_intr_urb, gfp); 2718 if (result) 2719 dev_warn(&usb->dev, "%s failed mux_intr_urb %d", __func__, 2720 result); 2721 2722 return result; 2723 } 2724 2725 /* operations setup of the serial interface */ 2726 static struct tty_operations hso_serial_ops = { 2727 .open = hso_serial_open, 2728 .close = hso_serial_close, 2729 .write = hso_serial_write, 2730 .write_room = hso_serial_write_room, 2731 .set_termios = hso_serial_set_termios, 2732 .chars_in_buffer = hso_serial_chars_in_buffer, 2733 .tiocmget = hso_serial_tiocmget, 2734 .tiocmset = hso_serial_tiocmset, 2735 }; 2736 2737 static struct usb_driver hso_driver = { 2738 .name = driver_name, 2739 .probe = hso_probe, 2740 .disconnect = hso_disconnect, 2741 .id_table = hso_ids, 2742 .suspend = hso_suspend, 2743 .resume = hso_resume, 2744 .supports_autosuspend = 1, 2745 }; 2746 2747 static int __init hso_init(void) 2748 { 2749 int i; 2750 int result; 2751 2752 /* put it in the log */ 2753 printk(KERN_INFO "hso: %s\n", version); 2754 2755 /* Initialise the serial table semaphore and table */ 2756 spin_lock_init(&serial_table_lock); 2757 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) 2758 serial_table[i] = NULL; 2759 2760 /* allocate our driver using the proper amount of supported minors */ 2761 tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS); 2762 if (!tty_drv) 2763 return -ENOMEM; 2764 2765 /* fill in all needed values */ 2766 tty_drv->magic = TTY_DRIVER_MAGIC; 2767 tty_drv->owner = THIS_MODULE; 2768 tty_drv->driver_name = driver_name; 2769 tty_drv->name = tty_filename; 2770 2771 /* if major number is provided as parameter, use that one */ 2772 if (tty_major) 2773 tty_drv->major = tty_major; 2774 2775 tty_drv->minor_start = 0; 2776 tty_drv->num = HSO_SERIAL_TTY_MINORS; 2777 tty_drv->type = TTY_DRIVER_TYPE_SERIAL; 2778 tty_drv->subtype = SERIAL_TYPE_NORMAL; 2779 tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; 2780 tty_drv->init_termios = tty_std_termios; 2781 tty_drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; 2782 tty_drv->termios = hso_serial_termios; 2783 tty_drv->termios_locked = hso_serial_termios_locked; 2784 tty_set_operations(tty_drv, &hso_serial_ops); 2785 2786 /* register the tty driver */ 2787 result = tty_register_driver(tty_drv); 2788 if (result) { 2789 printk(KERN_ERR "%s - tty_register_driver failed(%d)\n", 2790 __func__, result); 2791 return result; 2792 } 2793 2794 /* register this module as an usb driver */ 2795 result = usb_register(&hso_driver); 2796 if (result) { 2797 printk(KERN_ERR "Could not register hso driver? error: %d\n", 2798 result); 2799 /* cleanup serial interface */ 2800 tty_unregister_driver(tty_drv); 2801 return result; 2802 } 2803 2804 /* done */ 2805 return 0; 2806 } 2807 2808 static void __exit hso_exit(void) 2809 { 2810 printk(KERN_INFO "hso: unloaded\n"); 2811 2812 tty_unregister_driver(tty_drv); 2813 /* deregister the usb driver */ 2814 usb_deregister(&hso_driver); 2815 } 2816 2817 /* Module definitions */ 2818 module_init(hso_init); 2819 module_exit(hso_exit); 2820 2821 MODULE_AUTHOR(MOD_AUTHOR); 2822 MODULE_DESCRIPTION(MOD_DESCRIPTION); 2823 MODULE_LICENSE(MOD_LICENSE); 2824 MODULE_INFO(Version, DRIVER_VERSION); 2825 2826 /* change the debug level (eg: insmod hso.ko debug=0x04) */ 2827 MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]"); 2828 module_param(debug, int, S_IRUGO | S_IWUSR); 2829 2830 /* set the major tty number (eg: insmod hso.ko tty_major=245) */ 2831 MODULE_PARM_DESC(tty_major, "Set the major tty number"); 2832 module_param(tty_major, int, S_IRUGO | S_IWUSR); 2833 2834 /* disable network interface (eg: insmod hso.ko disable_net=1) */ 2835 MODULE_PARM_DESC(disable_net, "Disable the network interface"); 2836 module_param(disable_net, int, S_IRUGO | S_IWUSR); 2837