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72dc1c09
GKH		 1/******************************************************************************
2 *
3 * Driver for Option High Speed Mobile Devices.
4 *
5 * Copyright (C) 2008 Option International
11cd29b0
DJB		 6 * Filip Aben <f.aben@option.com>
7 * Denis Joseph Barrow <d.barow@option.com>
3b7d2b31 8 * Jan Dumon <j.dumon@option.com>
72dc1c09
GKH		 9 * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd)
10 * <ajb@spheresystems.co.uk>
11 * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
12 * Copyright (C) 2008 Novell, Inc.
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
26 * USA
27 *
28 *
29 *****************************************************************************/
30
31/******************************************************************************
32 *
33 * Description of the device:
34 *
35 * Interface 0: Contains the IP network interface on the bulk end points.
36 * The multiplexed serial ports are using the interrupt and
37 * control endpoints.
38 * Interrupt contains a bitmap telling which multiplexed
39 * serialport needs servicing.
40 *
41 * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the
42 * port is opened, as this have a huge impact on the network port
43 * throughput.
44 *
542f5482
DJB		 45 * Interface 2: Standard modem interface - circuit switched interface, this
46 * can be used to make a standard ppp connection however it
47 * should not be used in conjunction with the IP network interface
48 * enabled for USB performance reasons i.e. if using this set
49 * ideally disable_net=1.
72dc1c09
GKH		 50 *
51 *****************************************************************************/
52
53#include <linux/sched.h>
54#include <linux/slab.h>
55#include <linux/init.h>
56#include <linux/delay.h>
57#include <linux/netdevice.h>
58#include <linux/module.h>
59#include <linux/ethtool.h>
60#include <linux/usb.h>
61#include <linux/timer.h>
62#include <linux/tty.h>
63#include <linux/tty_driver.h>
64#include <linux/tty_flip.h>
65#include <linux/kmod.h>
66#include <linux/rfkill.h>
67#include <linux/ip.h>
68#include <linux/uaccess.h>
69#include <linux/usb/cdc.h>
70#include <net/arp.h>
71#include <asm/byteorder.h>
542f5482
DJB		 72#include <linux/serial_core.h>
73#include <linux/serial.h>
72dc1c09
GKH		 74
75
76#define DRIVER_VERSION "1.2"
77#define MOD_AUTHOR "Option Wireless"
78#define MOD_DESCRIPTION "USB High Speed Option driver"
79#define MOD_LICENSE "GPL"
80
81#define HSO_MAX_NET_DEVICES 10
82#define HSO__MAX_MTU 2048
83#define DEFAULT_MTU 1500
84#define DEFAULT_MRU 1500
85
86#define CTRL_URB_RX_SIZE 1024
87#define CTRL_URB_TX_SIZE 64
88
89#define BULK_URB_RX_SIZE 4096
90#define BULK_URB_TX_SIZE 8192
91
92#define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU
93#define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU
94#define MUX_BULK_RX_BUF_COUNT 4
95#define USB_TYPE_OPTION_VENDOR 0x20
96
97/* These definitions are used with the struct hso_net flags element */
98/* - use *_bit operations on it. (bit indices not values.) */
99#define HSO_NET_RUNNING 0
100
101#define HSO_NET_TX_TIMEOUT (HZ*10)
102
72dc1c09
GKH		 103#define HSO_SERIAL_MAGIC 0x48534f31
104
105/* Number of ttys to handle */
106#define HSO_SERIAL_TTY_MINORS 256
107
108#define MAX_RX_URBS 2
109
0235f641
GKH		 110static inline struct hso_serial *get_serial_by_tty(struct tty_struct *tty)
111{
112 if (tty)
113 return tty->driver_data;
114 return NULL;
115}
72dc1c09
GKH		 116
117/*****************************************************************************/
118/* Debugging functions */
119/*****************************************************************************/
120#define D__(lvl_, fmt, arg...) \
121 do { \
122 printk(lvl_ "[%d:%s]: " fmt "\n", \
123 __LINE__, __func__, ## arg); \
124 } while (0)
125
126#define D_(lvl, args...) \
127 do { \
128 if (lvl & debug) \
129 D__(KERN_INFO, args); \
130 } while (0)
131
132#define D1(args...) D_(0x01, ##args)
133#define D2(args...) D_(0x02, ##args)
134#define D3(args...) D_(0x04, ##args)
135#define D4(args...) D_(0x08, ##args)
136#define D5(args...) D_(0x10, ##args)
137
138/*****************************************************************************/
139/* Enumerators */
140/*****************************************************************************/
141enum pkt_parse_state {
142 WAIT_IP,
143 WAIT_DATA,
144 WAIT_SYNC
145};
146
147/*****************************************************************************/
148/* Structs */
149/*****************************************************************************/
150
151struct hso_shared_int {
152 struct usb_endpoint_descriptor *intr_endp;
153 void *shared_intr_buf;
154 struct urb *shared_intr_urb;
155 struct usb_device *usb;
156 int use_count;
157 int ref_count;
158 struct mutex shared_int_lock;
159};
160
161struct hso_net {
162 struct hso_device *parent;
163 struct net_device *net;
164 struct rfkill *rfkill;
165
166 struct usb_endpoint_descriptor *in_endp;
167 struct usb_endpoint_descriptor *out_endp;
168
169 struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT];
170 struct urb *mux_bulk_tx_urb;
171 void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT];
172 void *mux_bulk_tx_buf;
173
174 struct sk_buff *skb_rx_buf;
175 struct sk_buff *skb_tx_buf;
176
177 enum pkt_parse_state rx_parse_state;
178 spinlock_t net_lock;
179
180 unsigned short rx_buf_size;
181 unsigned short rx_buf_missing;
182 struct iphdr rx_ip_hdr;
183
184 unsigned long flags;
185};
186
8ef5ba63
DJB		 187enum rx_ctrl_state{
188 RX_IDLE,
189 RX_SENT,
190 RX_PENDING
191};
192
542f5482
DJB		 193#define BM_REQUEST_TYPE (0xa1)
194#define B_NOTIFICATION (0x20)
195#define W_VALUE (0x0)
196#define W_INDEX (0x2)
197#define W_LENGTH (0x2)
198
199#define B_OVERRUN (0x1<<6)
200#define B_PARITY (0x1<<5)
201#define B_FRAMING (0x1<<4)
202#define B_RING_SIGNAL (0x1<<3)
203#define B_BREAK (0x1<<2)
204#define B_TX_CARRIER (0x1<<1)
205#define B_RX_CARRIER (0x1<<0)
206
207struct hso_serial_state_notification {
208 u8 bmRequestType;
209 u8 bNotification;
210 u16 wValue;
211 u16 wIndex;
212 u16 wLength;
213 u16 UART_state_bitmap;
214} __attribute__((packed));
215
216struct hso_tiocmget {
217 struct mutex mutex;
218 wait_queue_head_t waitq;
219 int intr_completed;
220 struct usb_endpoint_descriptor *endp;
221 struct urb *urb;
222 struct hso_serial_state_notification serial_state_notification;
223 u16 prev_UART_state_bitmap;
224 struct uart_icount icount;
225};
226
227
72dc1c09
GKH		 228struct hso_serial {
229 struct hso_device *parent;
230 int magic;
231 u8 minor;
232
233 struct hso_shared_int *shared_int;
234
235 /* rx/tx urb could be either a bulk urb or a control urb depending
236 on which serial port it is used on. */
237 struct urb *rx_urb[MAX_RX_URBS];
238 u8 num_rx_urbs;
239 u8 *rx_data[MAX_RX_URBS];
240 u16 rx_data_length; /* should contain allocated length */
241
242 struct urb *tx_urb;
243 u8 *tx_data;
244 u8 *tx_buffer;
245 u16 tx_data_length; /* should contain allocated length */
246 u16 tx_data_count;
247 u16 tx_buffer_count;
248 struct usb_ctrlrequest ctrl_req_tx;
249 struct usb_ctrlrequest ctrl_req_rx;
250
251 struct usb_endpoint_descriptor *in_endp;
252 struct usb_endpoint_descriptor *out_endp;
253
8ef5ba63 254 enum rx_ctrl_state rx_state;
72dc1c09
GKH		 255 u8 rts_state;
256 u8 dtr_state;
257 unsigned tx_urb_used:1;
258
259 /* from usb_serial_port */
260 struct tty_struct *tty;
261 int open_count;
262 spinlock_t serial_lock;
263
264 int (*write_data) (struct hso_serial *serial);
542f5482 265 struct hso_tiocmget *tiocmget;
8ef5ba63
DJB		 266 /* Hacks required to get flow control
267 * working on the serial receive buffers
268 * so as not to drop characters on the floor.
269 */
270 int curr_rx_urb_idx;
271 u16 curr_rx_urb_offset;
272 u8 rx_urb_filled[MAX_RX_URBS];
273 struct tasklet_struct unthrottle_tasklet;
274 struct work_struct retry_unthrottle_workqueue;
72dc1c09
GKH		 275};
276
277struct hso_device {
278 union {
279 struct hso_serial *dev_serial;
280 struct hso_net *dev_net;
281 } port_data;
282
283 u32 port_spec;
284
285 u8 is_active;
286 u8 usb_gone;
287 struct work_struct async_get_intf;
288 struct work_struct async_put_intf;
289
290 struct usb_device *usb;
291 struct usb_interface *interface;
292
293 struct device *dev;
294 struct kref ref;
ab153d84 295 struct mutex mutex;
72dc1c09
GKH		 296};
297
298/* Type of interface */
299#define HSO_INTF_MASK 0xFF00
300#define HSO_INTF_MUX 0x0100
301#define HSO_INTF_BULK 0x0200
302
303/* Type of port */
304#define HSO_PORT_MASK 0xFF
305#define HSO_PORT_NO_PORT 0x0
306#define HSO_PORT_CONTROL 0x1
307#define HSO_PORT_APP 0x2
308#define HSO_PORT_GPS 0x3
309#define HSO_PORT_PCSC 0x4
310#define HSO_PORT_APP2 0x5
311#define HSO_PORT_GPS_CONTROL 0x6
312#define HSO_PORT_MSD 0x7
313#define HSO_PORT_VOICE 0x8
314#define HSO_PORT_DIAG2 0x9
315#define HSO_PORT_DIAG 0x10
316#define HSO_PORT_MODEM 0x11
317#define HSO_PORT_NETWORK 0x12
318
319/* Additional device info */
320#define HSO_INFO_MASK 0xFF000000
321#define HSO_INFO_CRC_BUG 0x01000000
322
323/*****************************************************************************/
324/* Prototypes */
325/*****************************************************************************/
326/* Serial driver functions */
327static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
328 unsigned int set, unsigned int clear);
329static void ctrl_callback(struct urb *urb);
8ef5ba63 330static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial);
72dc1c09
GKH		 331static void hso_kick_transmit(struct hso_serial *serial);
332/* Helper functions */
333static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int,
334 struct usb_device *usb, gfp_t gfp);
335static void log_usb_status(int status, const char *function);
336static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
337 int type, int dir);
338static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports);
339static void hso_free_interface(struct usb_interface *intf);
340static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags);
341static int hso_stop_serial_device(struct hso_device *hso_dev);
342static int hso_start_net_device(struct hso_device *hso_dev);
343static void hso_free_shared_int(struct hso_shared_int *shared_int);
344static int hso_stop_net_device(struct hso_device *hso_dev);
345static void hso_serial_ref_free(struct kref *ref);
8ef5ba63
DJB		 346static void hso_std_serial_read_bulk_callback(struct urb *urb);
347static int hso_mux_serial_read(struct hso_serial *serial);
72dc1c09
GKH		 348static void async_get_intf(struct work_struct *data);
349static void async_put_intf(struct work_struct *data);
350static int hso_put_activity(struct hso_device *hso_dev);
351static int hso_get_activity(struct hso_device *hso_dev);
542f5482 352static void tiocmget_intr_callback(struct urb *urb);
72dc1c09
GKH		 353/*****************************************************************************/
354/* Helping functions */
355/*****************************************************************************/
356
357/* #define DEBUG */
358
0235f641
GKH		 359static inline struct hso_net *dev2net(struct hso_device *hso_dev)
360{
361 return hso_dev->port_data.dev_net;
362}
363
364static inline struct hso_serial *dev2ser(struct hso_device *hso_dev)
365{
366 return hso_dev->port_data.dev_serial;
367}
72dc1c09
GKH		 368
369/* Debugging functions */
370#ifdef DEBUG
371static void dbg_dump(int line_count, const char *func_name, unsigned char *buf,
372 unsigned int len)
373{
0235f641 374 static char name[255];
72dc1c09 375
0235f641
GKH		 376 sprintf(name, "hso[%d:%s]", line_count, func_name);
377 print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len);
72dc1c09
GKH		 378}
379
380#define DUMP(buf_, len_) \
9ce673d5 381 dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_)
72dc1c09
GKH		 382
383#define DUMP1(buf_, len_) \
384 do { \
385 if (0x01 & debug) \
386 DUMP(buf_, len_); \
387 } while (0)
388#else
389#define DUMP(buf_, len_)
390#define DUMP1(buf_, len_)
391#endif
392
393/* module parameters */
394static int debug;
395static int tty_major;
396static int disable_net;
397
398/* driver info */
399static const char driver_name[] = "hso";
400static const char tty_filename[] = "ttyHS";
401static const char *version = __FILE__ ": " DRIVER_VERSION " " MOD_AUTHOR;
402/* the usb driver itself (registered in hso_init) */
403static struct usb_driver hso_driver;
404/* serial structures */
405static struct tty_driver *tty_drv;
406static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS];
407static struct hso_device *network_table[HSO_MAX_NET_DEVICES];
408static spinlock_t serial_table_lock;
72dc1c09
GKH		 409
410static const s32 default_port_spec[] = {
411 HSO_INTF_MUX | HSO_PORT_NETWORK,
412 HSO_INTF_BULK | HSO_PORT_DIAG,
413 HSO_INTF_BULK | HSO_PORT_MODEM,
414 0
415};
416
417static const s32 icon321_port_spec[] = {
418 HSO_INTF_MUX | HSO_PORT_NETWORK,
419 HSO_INTF_BULK | HSO_PORT_DIAG2,
420 HSO_INTF_BULK | HSO_PORT_MODEM,
421 HSO_INTF_BULK | HSO_PORT_DIAG,
422 0
423};
424
425#define default_port_device(vendor, product) \
426 USB_DEVICE(vendor, product), \
427 .driver_info = (kernel_ulong_t)default_port_spec
428
429#define icon321_port_device(vendor, product) \
430 USB_DEVICE(vendor, product), \
431 .driver_info = (kernel_ulong_t)icon321_port_spec
432
433/* list of devices we support */
434static const struct usb_device_id hso_ids[] = {
435 {default_port_device(0x0af0, 0x6711)},
436 {default_port_device(0x0af0, 0x6731)},
437 {default_port_device(0x0af0, 0x6751)},
438 {default_port_device(0x0af0, 0x6771)},
439 {default_port_device(0x0af0, 0x6791)},
440 {default_port_device(0x0af0, 0x6811)},
441 {default_port_device(0x0af0, 0x6911)},
442 {default_port_device(0x0af0, 0x6951)},
443 {default_port_device(0x0af0, 0x6971)},
444 {default_port_device(0x0af0, 0x7011)},
445 {default_port_device(0x0af0, 0x7031)},
446 {default_port_device(0x0af0, 0x7051)},
447 {default_port_device(0x0af0, 0x7071)},
448 {default_port_device(0x0af0, 0x7111)},
449 {default_port_device(0x0af0, 0x7211)},
450 {default_port_device(0x0af0, 0x7251)},
451 {default_port_device(0x0af0, 0x7271)},
452 {default_port_device(0x0af0, 0x7311)},
453 {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */
454 {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */
455 {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */
95eacee8 456 {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */
72dc1c09
GKH		 457 {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */
458 {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */
67dd8246 459 {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */
72dc1c09
GKH		 460 {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */
461 {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */
462 {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */
bab04c3a
DJB		 463 {USB_DEVICE(0x0af0, 0x7701)},
464 {USB_DEVICE(0x0af0, 0x7801)},
465 {USB_DEVICE(0x0af0, 0x7901)},
9961d842
JD		 466 {USB_DEVICE(0x0af0, 0x8200)},
467 {USB_DEVICE(0x0af0, 0x8201)},
468 {USB_DEVICE(0x0af0, 0xd035)},
67dd8246 469 {USB_DEVICE(0x0af0, 0xd055)},
9961d842
JD		 470 {USB_DEVICE(0x0af0, 0xd155)},
471 {USB_DEVICE(0x0af0, 0xd255)},
472 {USB_DEVICE(0x0af0, 0xd057)},
473 {USB_DEVICE(0x0af0, 0xd157)},
474 {USB_DEVICE(0x0af0, 0xd257)},
475 {USB_DEVICE(0x0af0, 0xd357)},
72dc1c09
GKH		 476 {}
477};
478MODULE_DEVICE_TABLE(usb, hso_ids);
479
480/* Sysfs attribute */
481static ssize_t hso_sysfs_show_porttype(struct device *dev,
482 struct device_attribute *attr,
483 char *buf)
484{
1aec5bdf 485 struct hso_device *hso_dev = dev_get_drvdata(dev);
72dc1c09
GKH		 486 char *port_name;
487
488 if (!hso_dev)
489 return 0;
490
491 switch (hso_dev->port_spec & HSO_PORT_MASK) {
492 case HSO_PORT_CONTROL:
493 port_name = "Control";
494 break;
495 case HSO_PORT_APP:
496 port_name = "Application";
497 break;
498 case HSO_PORT_APP2:
499 port_name = "Application2";
500 break;
501 case HSO_PORT_GPS:
502 port_name = "GPS";
503 break;
504 case HSO_PORT_GPS_CONTROL:
505 port_name = "GPS Control";
506 break;
507 case HSO_PORT_PCSC:
508 port_name = "PCSC";
509 break;
510 case HSO_PORT_DIAG:
511 port_name = "Diagnostic";
512 break;
513 case HSO_PORT_DIAG2:
514 port_name = "Diagnostic2";
515 break;
516 case HSO_PORT_MODEM:
517 port_name = "Modem";
518 break;
519 case HSO_PORT_NETWORK:
520 port_name = "Network";
521 break;
522 default:
523 port_name = "Unknown";
524 break;
525 }
526
527 return sprintf(buf, "%s\n", port_name);
528}
529static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL);
530
8ef5ba63
DJB		 531static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb)
532{
533 int idx;
534
535 for (idx = 0; idx < serial->num_rx_urbs; idx++)
536 if (serial->rx_urb[idx] == urb)
537 return idx;
538 dev_err(serial->parent->dev, "hso_urb_to_index failed\n");
539 return -1;
540}
541
72dc1c09
GKH		 542/* converts mux value to a port spec value */
543static u32 hso_mux_to_port(int mux)
544{
545 u32 result;
546
547 switch (mux) {
548 case 0x1:
549 result = HSO_PORT_CONTROL;
550 break;
551 case 0x2:
552 result = HSO_PORT_APP;
553 break;
554 case 0x4:
555 result = HSO_PORT_PCSC;
556 break;
557 case 0x8:
558 result = HSO_PORT_GPS;
559 break;
560 case 0x10:
561 result = HSO_PORT_APP2;
562 break;
563 default:
564 result = HSO_PORT_NO_PORT;
565 }
566 return result;
567}
568
569/* converts port spec value to a mux value */
570static u32 hso_port_to_mux(int port)
571{
572 u32 result;
573
574 switch (port & HSO_PORT_MASK) {
575 case HSO_PORT_CONTROL:
576 result = 0x0;
577 break;
578 case HSO_PORT_APP:
579 result = 0x1;
580 break;
581 case HSO_PORT_PCSC:
582 result = 0x2;
583 break;
584 case HSO_PORT_GPS:
585 result = 0x3;
586 break;
587 case HSO_PORT_APP2:
588 result = 0x4;
589 break;
590 default:
591 result = 0x0;
592 }
593 return result;
594}
595
596static struct hso_serial *get_serial_by_shared_int_and_type(
597 struct hso_shared_int *shared_int,
598 int mux)
599{
600 int i, port;
601
602 port = hso_mux_to_port(mux);
603
604 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
8e95a202
JP		 605 if (serial_table[i] &&
606 (dev2ser(serial_table[i])->shared_int == shared_int) &&
607 ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) {
72dc1c09
GKH		 608 return dev2ser(serial_table[i]);
609 }
610 }
611
612 return NULL;
613}
614
615static struct hso_serial *get_serial_by_index(unsigned index)
616{
0235f641 617 struct hso_serial *serial = NULL;
72dc1c09
GKH		 618 unsigned long flags;
619
72dc1c09 620 spin_lock_irqsave(&serial_table_lock, flags);
0235f641
GKH		 621 if (serial_table[index])
622 serial = dev2ser(serial_table[index]);
72dc1c09
GKH		 623 spin_unlock_irqrestore(&serial_table_lock, flags);
624
625 return serial;
626}
627
628static int get_free_serial_index(void)
629{
630 int index;
631 unsigned long flags;
632
633 spin_lock_irqsave(&serial_table_lock, flags);
634 for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) {
635 if (serial_table[index] == NULL) {
636 spin_unlock_irqrestore(&serial_table_lock, flags);
637 return index;
638 }
639 }
640 spin_unlock_irqrestore(&serial_table_lock, flags);
641
642 printk(KERN_ERR "%s: no free serial devices in table\n", __func__);
643 return -1;
644}
645
646static void set_serial_by_index(unsigned index, struct hso_serial *serial)
647{
648 unsigned long flags;
0235f641 649
72dc1c09
GKH		 650 spin_lock_irqsave(&serial_table_lock, flags);
651 if (serial)
652 serial_table[index] = serial->parent;
653 else
654 serial_table[index] = NULL;
655 spin_unlock_irqrestore(&serial_table_lock, flags);
656}
657
0235f641 658/* log a meaningful explanation of an USB status */
72dc1c09
GKH		 659static void log_usb_status(int status, const char *function)
660{
661 char *explanation;
662
663 switch (status) {
664 case -ENODEV:
665 explanation = "no device";
666 break;
667 case -ENOENT:
668 explanation = "endpoint not enabled";
669 break;
670 case -EPIPE:
671 explanation = "endpoint stalled";
672 break;
673 case -ENOSPC:
674 explanation = "not enough bandwidth";
675 break;
676 case -ESHUTDOWN:
677 explanation = "device disabled";
678 break;
679 case -EHOSTUNREACH:
680 explanation = "device suspended";
681 break;
682 case -EINVAL:
683 case -EAGAIN:
684 case -EFBIG:
685 case -EMSGSIZE:
686 explanation = "internal error";
687 break;
688 default:
689 explanation = "unknown status";
690 break;
691 }
692 D1("%s: received USB status - %s (%d)", function, explanation, status);
693}
694
695/* Network interface functions */
696
697/* called when net interface is brought up by ifconfig */
698static int hso_net_open(struct net_device *net)
699{
700 struct hso_net *odev = netdev_priv(net);
701 unsigned long flags = 0;
702
703 if (!odev) {
704 dev_err(&net->dev, "No net device !\n");
705 return -ENODEV;
706 }
707
708 odev->skb_tx_buf = NULL;
709
710 /* setup environment */
711 spin_lock_irqsave(&odev->net_lock, flags);
712 odev->rx_parse_state = WAIT_IP;
713 odev->rx_buf_size = 0;
714 odev->rx_buf_missing = sizeof(struct iphdr);
715 spin_unlock_irqrestore(&odev->net_lock, flags);
716
72dc1c09
GKH		 717 /* We are up and running. */
718 set_bit(HSO_NET_RUNNING, &odev->flags);
889bd9b6 719 hso_start_net_device(odev->parent);
72dc1c09
GKH		 720
721 /* Tell the kernel we are ready to start receiving from it */
722 netif_start_queue(net);
723
724 return 0;
725}
726
727/* called when interface is brought down by ifconfig */
728static int hso_net_close(struct net_device *net)
729{
730 struct hso_net *odev = netdev_priv(net);
731
732 /* we don't need the queue anymore */
733 netif_stop_queue(net);
734 /* no longer running */
735 clear_bit(HSO_NET_RUNNING, &odev->flags);
736
737 hso_stop_net_device(odev->parent);
738
739 /* done */
740 return 0;
741}
742
743/* USB tells is xmit done, we should start the netqueue again */
744static void write_bulk_callback(struct urb *urb)
745{
746 struct hso_net *odev = urb->context;
747 int status = urb->status;
748
749 /* Sanity check */
750 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
751 dev_err(&urb->dev->dev, "%s: device not running\n", __func__);
752 return;
753 }
754
755 /* Do we still have a valid kernel network device? */
756 if (!netif_device_present(odev->net)) {
757 dev_err(&urb->dev->dev, "%s: net device not present\n",
758 __func__);
759 return;
760 }
761
762 /* log status, but don't act on it, we don't need to resubmit anything
763 * anyhow */
764 if (status)
765 log_usb_status(status, __func__);
766
767 hso_put_activity(odev->parent);
768
769 /* Tell the network interface we are ready for another frame */
770 netif_wake_queue(odev->net);
771}
772
773/* called by kernel when we need to transmit a packet */
25a79c41
SH		 774static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb,
775 struct net_device *net)
72dc1c09
GKH		 776{
777 struct hso_net *odev = netdev_priv(net);
778 int result;
779
780 /* Tell the kernel, "No more frames 'til we are done with this one." */
781 netif_stop_queue(net);
782 if (hso_get_activity(odev->parent) == -EAGAIN) {
783 odev->skb_tx_buf = skb;
6ed10654 784 return NETDEV_TX_OK;
72dc1c09
GKH		 785 }
786
787 /* log if asked */
788 DUMP1(skb->data, skb->len);
789 /* Copy it from kernel memory to OUR memory */
790 memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len);
791 D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE);
792
793 /* Fill in the URB for shipping it out. */
794 usb_fill_bulk_urb(odev->mux_bulk_tx_urb,
795 odev->parent->usb,
796 usb_sndbulkpipe(odev->parent->usb,
797 odev->out_endp->
798 bEndpointAddress & 0x7F),
799 odev->mux_bulk_tx_buf, skb->len, write_bulk_callback,
800 odev);
801
802 /* Deal with the Zero Length packet problem, I hope */
803 odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET;
804
805 /* Send the URB on its merry way. */
806 result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC);
807 if (result) {
808 dev_warn(&odev->parent->interface->dev,
809 "failed mux_bulk_tx_urb %d", result);
810 net->stats.tx_errors++;
811 netif_start_queue(net);
812 } else {
813 net->stats.tx_packets++;
814 net->stats.tx_bytes += skb->len;
815 /* And tell the kernel when the last transmit started. */
816 net->trans_start = jiffies;
817 }
818 dev_kfree_skb(skb);
819 /* we're done */
5b2c4b97 820 return NETDEV_TX_OK;
72dc1c09
GKH		 821}
822
823static void hso_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
824{
825 struct hso_net *odev = netdev_priv(net);
826
827 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
828 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
829 usb_make_path(odev->parent->usb, info->bus_info, sizeof info->bus_info);
830}
831
0fc0b732 832static const struct ethtool_ops ops = {
72dc1c09
GKH		 833 .get_drvinfo = hso_get_drvinfo,
834 .get_link = ethtool_op_get_link
835};
836
837/* called when a packet did not ack after watchdogtimeout */
838static void hso_net_tx_timeout(struct net_device *net)
839{
840 struct hso_net *odev = netdev_priv(net);
841
842 if (!odev)
843 return;
844
845 /* Tell syslog we are hosed. */
846 dev_warn(&net->dev, "Tx timed out.\n");
847
848 /* Tear the waiting frame off the list */
8e95a202
JP		 849 if (odev->mux_bulk_tx_urb &&
850 (odev->mux_bulk_tx_urb->status == -EINPROGRESS))
72dc1c09
GKH		 851 usb_unlink_urb(odev->mux_bulk_tx_urb);
852
853 /* Update statistics */
854 net->stats.tx_errors++;
855}
856
857/* make a real packet from the received USB buffer */
858static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt,
859 unsigned int count, unsigned char is_eop)
860{
861 unsigned short temp_bytes;
862 unsigned short buffer_offset = 0;
863 unsigned short frame_len;
864 unsigned char *tmp_rx_buf;
865
866 /* log if needed */
867 D1("Rx %d bytes", count);
868 DUMP(ip_pkt, min(128, (int)count));
869
870 while (count) {
871 switch (odev->rx_parse_state) {
872 case WAIT_IP:
873 /* waiting for IP header. */
874 /* wanted bytes - size of ip header */
875 temp_bytes =
876 (count <
877 odev->rx_buf_missing) ? count : odev->
878 rx_buf_missing;
879
880 memcpy(((unsigned char *)(&odev->rx_ip_hdr)) +
881 odev->rx_buf_size, ip_pkt + buffer_offset,
882 temp_bytes);
883
884 odev->rx_buf_size += temp_bytes;
885 buffer_offset += temp_bytes;
886 odev->rx_buf_missing -= temp_bytes;
887 count -= temp_bytes;
888
889 if (!odev->rx_buf_missing) {
890 /* header is complete allocate an sk_buffer and
891 * continue to WAIT_DATA */
892 frame_len = ntohs(odev->rx_ip_hdr.tot_len);
893
894 if ((frame_len > DEFAULT_MRU) ||
895 (frame_len < sizeof(struct iphdr))) {
896 dev_err(&odev->net->dev,
897 "Invalid frame (%d) length\n",
898 frame_len);
899 odev->rx_parse_state = WAIT_SYNC;
900 continue;
901 }
902 /* Allocate an sk_buff */
d65a68a8
PZ		 903 odev->skb_rx_buf = netdev_alloc_skb(odev->net,
904 frame_len);
72dc1c09
GKH		 905 if (!odev->skb_rx_buf) {
906 /* We got no receive buffer. */
907 D1("could not allocate memory");
908 odev->rx_parse_state = WAIT_SYNC;
909 return;
910 }
72dc1c09
GKH		 911
912 /* Copy what we got so far. make room for iphdr
913 * after tail. */
914 tmp_rx_buf =
915 skb_put(odev->skb_rx_buf,
916 sizeof(struct iphdr));
917 memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr),
918 sizeof(struct iphdr));
919
920 /* ETH_HLEN */
921 odev->rx_buf_size = sizeof(struct iphdr);
922
923 /* Filip actually use .tot_len */
924 odev->rx_buf_missing =
925 frame_len - sizeof(struct iphdr);
926 odev->rx_parse_state = WAIT_DATA;
927 }
928 break;
929
930 case WAIT_DATA:
931 temp_bytes = (count < odev->rx_buf_missing)
932 ? count : odev->rx_buf_missing;
933
934 /* Copy the rest of the bytes that are left in the
935 * buffer into the waiting sk_buf. */
936 /* Make room for temp_bytes after tail. */
937 tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes);
938 memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes);
939
940 odev->rx_buf_missing -= temp_bytes;
941 count -= temp_bytes;
942 buffer_offset += temp_bytes;
943 odev->rx_buf_size += temp_bytes;
944 if (!odev->rx_buf_missing) {
945 /* Packet is complete. Inject into stack. */
946 /* We have IP packet here */
09640e63 947 odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP);
72dc1c09
GKH		 948 /* don't check it */
949 odev->skb_rx_buf->ip_summed =
950 CHECKSUM_UNNECESSARY;
951
952 skb_reset_mac_header(odev->skb_rx_buf);
953
954 /* Ship it off to the kernel */
955 netif_rx(odev->skb_rx_buf);
956 /* No longer our buffer. */
957 odev->skb_rx_buf = NULL;
958
959 /* update out statistics */
960 odev->net->stats.rx_packets++;
961
962 odev->net->stats.rx_bytes += odev->rx_buf_size;
963
964 odev->rx_buf_size = 0;
965 odev->rx_buf_missing = sizeof(struct iphdr);
966 odev->rx_parse_state = WAIT_IP;
967 }
968 break;
969
970 case WAIT_SYNC:
971 D1(" W_S");
972 count = 0;
973 break;
974 default:
975 D1(" ");
976 count--;
977 break;
978 }
979 }
980
981 /* Recovery mechanism for WAIT_SYNC state. */
982 if (is_eop) {
983 if (odev->rx_parse_state == WAIT_SYNC) {
984 odev->rx_parse_state = WAIT_IP;
985 odev->rx_buf_size = 0;
986 odev->rx_buf_missing = sizeof(struct iphdr);
987 }
988 }
989}
990
991/* Moving data from usb to kernel (in interrupt state) */
992static void read_bulk_callback(struct urb *urb)
993{
994 struct hso_net *odev = urb->context;
995 struct net_device *net;
996 int result;
997 int status = urb->status;
998
999 /* is al ok? (Filip: Who's Al ?) */
1000 if (status) {
1001 log_usb_status(status, __func__);
1002 return;
1003 }
1004
1005 /* Sanity check */
1006 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
1007 D1("BULK IN callback but driver is not active!");
1008 return;
1009 }
1010 usb_mark_last_busy(urb->dev);
1011
1012 net = odev->net;
1013
1014 if (!netif_device_present(net)) {
1015 /* Somebody killed our network interface... */
1016 return;
1017 }
1018
1019 if (odev->parent->port_spec & HSO_INFO_CRC_BUG) {
1020 u32 rest;
1021 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1022 rest = urb->actual_length % odev->in_endp->wMaxPacketSize;
8e95a202
JP		 1023 if (((rest == 5) || (rest == 6)) &&
1024 !memcmp(((u8 *) urb->transfer_buffer) +
1025 urb->actual_length - 4, crc_check, 4)) {
72dc1c09
GKH		 1026 urb->actual_length -= 4;
1027 }
1028 }
1029
1030 /* do we even have a packet? */
1031 if (urb->actual_length) {
1032 /* Handle the IP stream, add header and push it onto network
1033 * stack if the packet is complete. */
1034 spin_lock(&odev->net_lock);
1035 packetizeRx(odev, urb->transfer_buffer, urb->actual_length,
1036 (urb->transfer_buffer_length >
1037 urb->actual_length) ? 1 : 0);
1038 spin_unlock(&odev->net_lock);
1039 }
1040
1041 /* We are done with this URB, resubmit it. Prep the USB to wait for
1042 * another frame. Reuse same as received. */
1043 usb_fill_bulk_urb(urb,
1044 odev->parent->usb,
1045 usb_rcvbulkpipe(odev->parent->usb,
1046 odev->in_endp->
1047 bEndpointAddress & 0x7F),
1048 urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE,
1049 read_bulk_callback, odev);
1050
1051 /* Give this to the USB subsystem so it can tell us when more data
1052 * arrives. */
1053 result = usb_submit_urb(urb, GFP_ATOMIC);
1054 if (result)
1055 dev_warn(&odev->parent->interface->dev,
1056 "%s failed submit mux_bulk_rx_urb %d", __func__,
1057 result);
1058}
1059
1060/* Serial driver functions */
1061
ac9720c3 1062static void hso_init_termios(struct ktermios *termios)
72dc1c09 1063{
72dc1c09
GKH		 1064 /*
1065 * The default requirements for this device are:
1066 */
72dc1c09
GKH		 1067 termios->c_iflag &=
1068 ~(IGNBRK /* disable ignore break */
1069 | BRKINT /* disable break causes interrupt */
1070 | PARMRK /* disable mark parity errors */
1071 | ISTRIP /* disable clear high bit of input characters */
1072 | INLCR /* disable translate NL to CR */
1073 | IGNCR /* disable ignore CR */
1074 | ICRNL /* disable translate CR to NL */
1075 | IXON); /* disable enable XON/XOFF flow control */
1076
1077 /* disable postprocess output characters */
1078 termios->c_oflag &= ~OPOST;
1079
1080 termios->c_lflag &=
1081 ~(ECHO /* disable echo input characters */
1082 | ECHONL /* disable echo new line */
1083 | ICANON /* disable erase, kill, werase, and rprnt
1084 special characters */
1085 | ISIG /* disable interrupt, quit, and suspend special
1086 characters */
1087 | IEXTEN); /* disable non-POSIX special characters */
1088
1089 termios->c_cflag &=
1090 ~(CSIZE /* no size */
1091 | PARENB /* disable parity bit */
1092 | CBAUD /* clear current baud rate */
1093 | CBAUDEX); /* clear current buad rate */
1094
1095 termios->c_cflag |= CS8; /* character size 8 bits */
1096
1097 /* baud rate 115200 */
ac9720c3
AC		 1098 tty_termios_encode_baud_rate(termios, 115200, 115200);
1099}
1100
1101static void _hso_serial_set_termios(struct tty_struct *tty,
1102 struct ktermios *old)
1103{
1104 struct hso_serial *serial = get_serial_by_tty(tty);
1105 struct ktermios *termios;
1106
1107 if (!serial) {
1108 printk(KERN_ERR "%s: no tty structures", __func__);
1109 return;
1110 }
1111
1112 D4("port %d", serial->minor);
72dc1c09
GKH		 1113
1114 /*
ac9720c3 1115 * Fix up unsupported bits
72dc1c09 1116 */
ac9720c3
AC		 1117 termios = tty->termios;
1118 termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */
1119
1120 termios->c_cflag &=
1121 ~(CSIZE /* no size */
1122 | PARENB /* disable parity bit */
1123 | CBAUD /* clear current baud rate */
1124 | CBAUDEX); /* clear current buad rate */
1125
1126 termios->c_cflag |= CS8; /* character size 8 bits */
1127
1128 /* baud rate 115200 */
1129 tty_encode_baud_rate(tty, 115200, 115200);
72dc1c09
GKH		 1130}
1131
8ef5ba63
DJB		 1132static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb)
1133{
1134 int result;
1135#ifdef CONFIG_HSO_AUTOPM
1136 usb_mark_last_busy(urb->dev);
1137#endif
1138 /* We are done with this URB, resubmit it. Prep the USB to wait for
1139 * another frame */
1140 usb_fill_bulk_urb(urb, serial->parent->usb,
1141 usb_rcvbulkpipe(serial->parent->usb,
1142 serial->in_endp->
1143 bEndpointAddress & 0x7F),
1144 urb->transfer_buffer, serial->rx_data_length,
1145 hso_std_serial_read_bulk_callback, serial);
1146 /* Give this to the USB subsystem so it can tell us when more data
1147 * arrives. */
1148 result = usb_submit_urb(urb, GFP_ATOMIC);
1149 if (result) {
1150 dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n",
1151 __func__, result);
1152 }
1153}
1154
1155
1156
1157
1158static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial)
1159{
1160 int count;
1161 struct urb *curr_urb;
1162
1163 while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) {
1164 curr_urb = serial->rx_urb[serial->curr_rx_urb_idx];
1165 count = put_rxbuf_data(curr_urb, serial);
1166 if (count == -1)
1167 return;
1168 if (count == 0) {
1169 serial->curr_rx_urb_idx++;
1170 if (serial->curr_rx_urb_idx >= serial->num_rx_urbs)
1171 serial->curr_rx_urb_idx = 0;
1172 hso_resubmit_rx_bulk_urb(serial, curr_urb);
1173 }
1174 }
1175}
1176
1177static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
1178{
1179 int count = 0;
1180 struct urb *urb;
1181
1182 urb = serial->rx_urb[0];
1183 if (serial->open_count > 0) {
1184 count = put_rxbuf_data(urb, serial);
1185 if (count == -1)
1186 return;
1187 }
1188 /* Re issue a read as long as we receive data. */
1189
1190 if (count == 0 && ((urb->actual_length != 0) ||
1191 (serial->rx_state == RX_PENDING))) {
1192 serial->rx_state = RX_SENT;
1193 hso_mux_serial_read(serial);
1194 } else
1195 serial->rx_state = RX_IDLE;
1196}
1197
1198
1199/* read callback for Diag and CS port */
1200static void hso_std_serial_read_bulk_callback(struct urb *urb)
1201{
1202 struct hso_serial *serial = urb->context;
1203 int status = urb->status;
1204
1205 /* sanity check */
1206 if (!serial) {
1207 D1("serial == NULL");
1208 return;
1209 } else if (status) {
1210 log_usb_status(status, __func__);
1211 return;
1212 }
1213
1214 D4("\n--- Got serial_read_bulk callback %02x ---", status);
1215 D1("Actual length = %d\n", urb->actual_length);
1216 DUMP1(urb->transfer_buffer, urb->actual_length);
1217
1218 /* Anyone listening? */
1219 if (serial->open_count == 0)
1220 return;
1221
1222 if (status == 0) {
1223 if (serial->parent->port_spec & HSO_INFO_CRC_BUG) {
1224 u32 rest;
1225 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1226 rest =
1227 urb->actual_length %
1228 serial->in_endp->wMaxPacketSize;
8e95a202
JP		 1229 if (((rest == 5) || (rest == 6)) &&
1230 !memcmp(((u8 *) urb->transfer_buffer) +
1231 urb->actual_length - 4, crc_check, 4)) {
8ef5ba63
DJB		 1232 urb->actual_length -= 4;
1233 }
1234 }
1235 /* Valid data, handle RX data */
1236 spin_lock(&serial->serial_lock);
1237 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1;
1238 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1239 spin_unlock(&serial->serial_lock);
1240 } else if (status == -ENOENT || status == -ECONNRESET) {
1241 /* Unlinked - check for throttled port. */
1242 D2("Port %d, successfully unlinked urb", serial->minor);
1243 spin_lock(&serial->serial_lock);
1244 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
1245 hso_resubmit_rx_bulk_urb(serial, urb);
1246 spin_unlock(&serial->serial_lock);
1247 } else {
1248 D2("Port %d, status = %d for read urb", serial->minor, status);
1249 return;
1250 }
1251}
1252
1253/*
1254 * This needs to be a tasklet otherwise we will
1255 * end up recursively calling this function.
1256 */
0227abc9 1257static void hso_unthrottle_tasklet(struct hso_serial *serial)
8ef5ba63
DJB		 1258{
1259 unsigned long flags;
1260
1261 spin_lock_irqsave(&serial->serial_lock, flags);
1262 if ((serial->parent->port_spec & HSO_INTF_MUX))
1263 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
1264 else
1265 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1266 spin_unlock_irqrestore(&serial->serial_lock, flags);
1267}
1268
1269static void hso_unthrottle(struct tty_struct *tty)
1270{
1271 struct hso_serial *serial = get_serial_by_tty(tty);
1272
1273 tasklet_hi_schedule(&serial->unthrottle_tasklet);
1274}
1275
0227abc9 1276static void hso_unthrottle_workfunc(struct work_struct *work)
8ef5ba63
DJB		 1277{
1278 struct hso_serial *serial =
1279 container_of(work, struct hso_serial,
1280 retry_unthrottle_workqueue);
1281 hso_unthrottle_tasklet(serial);
1282}
1283
72dc1c09
GKH		 1284/* open the requested serial port */
1285static int hso_serial_open(struct tty_struct *tty, struct file *filp)
1286{
1287 struct hso_serial *serial = get_serial_by_index(tty->index);
ab153d84 1288 int result;
72dc1c09
GKH		 1289
1290 /* sanity check */
1291 if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) {
e136e303 1292 WARN_ON(1);
72dc1c09
GKH		 1293 tty->driver_data = NULL;
1294 D1("Failed to open port");
1295 return -ENODEV;
1296 }
1297
ab153d84 1298 mutex_lock(&serial->parent->mutex);
ab153d84
DM		 1299 result = usb_autopm_get_interface(serial->parent->interface);
1300 if (result < 0)
72dc1c09
GKH		 1301 goto err_out;
1302
1303 D1("Opening %d", serial->minor);
1304 kref_get(&serial->parent->ref);
1305
1306 /* setup */
e136e303 1307 spin_lock_irq(&serial->serial_lock);
72dc1c09 1308 tty->driver_data = serial;
fe41cbb1 1309 tty_kref_put(serial->tty);
e136e303
AC		 1310 serial->tty = tty_kref_get(tty);
1311 spin_unlock_irq(&serial->serial_lock);
72dc1c09 1312
2f9889a2
DM		 1313 /* check for port already opened, if not set the termios */
1314 serial->open_count++;
72dc1c09
GKH		 1315 if (serial->open_count == 1) {
1316 tty->low_latency = 1;
8ef5ba63 1317 serial->rx_state = RX_IDLE;
72dc1c09
GKH		 1318 /* Force default termio settings */
1319 _hso_serial_set_termios(tty, NULL);
8ef5ba63
DJB		 1320 tasklet_init(&serial->unthrottle_tasklet,
1321 (void (*)(unsigned long))hso_unthrottle_tasklet,
1322 (unsigned long)serial);
1323 INIT_WORK(&serial->retry_unthrottle_workqueue,
1324 hso_unthrottle_workfunc);
ab153d84
DM		 1325 result = hso_start_serial_device(serial->parent, GFP_KERNEL);
1326 if (result) {
72dc1c09
GKH		 1327 hso_stop_serial_device(serial->parent);
1328 serial->open_count--;
ab153d84 1329 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09
GKH		 1330 }
1331 } else {
1332 D1("Port was already open");
1333 }
1334
1335 usb_autopm_put_interface(serial->parent->interface);
1336
1337 /* done */
ab153d84 1338 if (result)
72dc1c09
GKH		 1339 hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0);
1340err_out:
ab153d84
DM		 1341 mutex_unlock(&serial->parent->mutex);
1342 return result;
72dc1c09
GKH		 1343}
1344
1345/* close the requested serial port */
1346static void hso_serial_close(struct tty_struct *tty, struct file *filp)
1347{
1348 struct hso_serial *serial = tty->driver_data;
1349 u8 usb_gone;
1350
1351 D1("Closing serial port");
1352
e136e303
AC		 1353 /* Open failed, no close cleanup required */
1354 if (serial == NULL)
1355 return;
1356
ab153d84 1357 mutex_lock(&serial->parent->mutex);
72dc1c09
GKH		 1358 usb_gone = serial->parent->usb_gone;
1359
1360 if (!usb_gone)
1361 usb_autopm_get_interface(serial->parent->interface);
1362
1363 /* reset the rts and dtr */
1364 /* do the actual close */
1365 serial->open_count--;
dcfcb256 1366
72dc1c09 1367 if (serial->open_count <= 0) {
72dc1c09 1368 serial->open_count = 0;
e136e303
AC		 1369 spin_lock_irq(&serial->serial_lock);
1370 if (serial->tty == tty) {
72dc1c09
GKH		 1371 serial->tty->driver_data = NULL;
1372 serial->tty = NULL;
e136e303 1373 tty_kref_put(tty);
72dc1c09 1374 }
e136e303 1375 spin_unlock_irq(&serial->serial_lock);
72dc1c09
GKH		 1376 if (!usb_gone)
1377 hso_stop_serial_device(serial->parent);
8ef5ba63
DJB		 1378 tasklet_kill(&serial->unthrottle_tasklet);
1379 cancel_work_sync(&serial->retry_unthrottle_workqueue);
72dc1c09 1380 }
8ef5ba63 1381
72dc1c09
GKH		 1382 if (!usb_gone)
1383 usb_autopm_put_interface(serial->parent->interface);
ab153d84
DM		 1384
1385 mutex_unlock(&serial->parent->mutex);
dcfcb256
AK		 1386
1387 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09
GKH		 1388}
1389
1390/* close the requested serial port */
1391static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf,
1392 int count)
1393{
1394 struct hso_serial *serial = get_serial_by_tty(tty);
1395 int space, tx_bytes;
1396 unsigned long flags;
1397
1398 /* sanity check */
1399 if (serial == NULL) {
1400 printk(KERN_ERR "%s: serial is NULL\n", __func__);
1401 return -ENODEV;
1402 }
1403
1404 spin_lock_irqsave(&serial->serial_lock, flags);
1405
1406 space = serial->tx_data_length - serial->tx_buffer_count;
1407 tx_bytes = (count < space) ? count : space;
1408
1409 if (!tx_bytes)
1410 goto out;
1411
1412 memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes);
1413 serial->tx_buffer_count += tx_bytes;
1414
1415out:
1416 spin_unlock_irqrestore(&serial->serial_lock, flags);
1417
1418 hso_kick_transmit(serial);
1419 /* done */
1420 return tx_bytes;
1421}
1422
1423/* how much room is there for writing */
1424static int hso_serial_write_room(struct tty_struct *tty)
1425{
1426 struct hso_serial *serial = get_serial_by_tty(tty);
1427 int room;
1428 unsigned long flags;
1429
1430 spin_lock_irqsave(&serial->serial_lock, flags);
1431 room = serial->tx_data_length - serial->tx_buffer_count;
1432 spin_unlock_irqrestore(&serial->serial_lock, flags);
1433
1434 /* return free room */
1435 return room;
1436}
1437
1438/* setup the term */
1439static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
1440{
1441 struct hso_serial *serial = get_serial_by_tty(tty);
1442 unsigned long flags;
1443
1444 if (old)
1445 D5("Termios called with: cflags new[%d] - old[%d]",
1446 tty->termios->c_cflag, old->c_cflag);
1447
1448 /* the actual setup */
1449 spin_lock_irqsave(&serial->serial_lock, flags);
1450 if (serial->open_count)
1451 _hso_serial_set_termios(tty, old);
1452 else
1453 tty->termios = old;
1454 spin_unlock_irqrestore(&serial->serial_lock, flags);
1455
1456 /* done */
1457 return;
1458}
1459
1460/* how many characters in the buffer */
1461static int hso_serial_chars_in_buffer(struct tty_struct *tty)
1462{
1463 struct hso_serial *serial = get_serial_by_tty(tty);
1464 int chars;
1465 unsigned long flags;
1466
1467 /* sanity check */
1468 if (serial == NULL)
1469 return 0;
1470
1471 spin_lock_irqsave(&serial->serial_lock, flags);
1472 chars = serial->tx_buffer_count;
1473 spin_unlock_irqrestore(&serial->serial_lock, flags);
1474
1475 return chars;
1476}
0227abc9
HE		 1477static int tiocmget_submit_urb(struct hso_serial *serial,
1478 struct hso_tiocmget *tiocmget,
1479 struct usb_device *usb)
542f5482
DJB		 1480{
1481 int result;
1482
1483 if (serial->parent->usb_gone)
1484 return -ENODEV;
1485 usb_fill_int_urb(tiocmget->urb, usb,
1486 usb_rcvintpipe(usb,
1487 tiocmget->endp->
1488 bEndpointAddress & 0x7F),
1489 &tiocmget->serial_state_notification,
1490 sizeof(struct hso_serial_state_notification),
1491 tiocmget_intr_callback, serial,
1492 tiocmget->endp->bInterval);
1493 result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC);
1494 if (result) {
1495 dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__,
1496 result);
1497 }
1498 return result;
1499
1500}
1501
1502static void tiocmget_intr_callback(struct urb *urb)
1503{
1504 struct hso_serial *serial = urb->context;
1505 struct hso_tiocmget *tiocmget;
1506 int status = urb->status;
1507 u16 UART_state_bitmap, prev_UART_state_bitmap;
1508 struct uart_icount *icount;
1509 struct hso_serial_state_notification *serial_state_notification;
1510 struct usb_device *usb;
1511
1512 /* Sanity checks */
1513 if (!serial)
1514 return;
1515 if (status) {
1516 log_usb_status(status, __func__);
1517 return;
1518 }
1519 tiocmget = serial->tiocmget;
1520 if (!tiocmget)
1521 return;
1522 usb = serial->parent->usb;
1523 serial_state_notification = &tiocmget->serial_state_notification;
1524 if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE ||
1525 serial_state_notification->bNotification != B_NOTIFICATION ||
1526 le16_to_cpu(serial_state_notification->wValue) != W_VALUE ||
1527 le16_to_cpu(serial_state_notification->wIndex) != W_INDEX ||
1528 le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) {
1529 dev_warn(&usb->dev,
1530 "hso received invalid serial state notification\n");
1531 DUMP(serial_state_notification,
9ce673d5 1532 sizeof(struct hso_serial_state_notification));
542f5482
DJB		 1533 } else {
1534
1535 UART_state_bitmap = le16_to_cpu(serial_state_notification->
1536 UART_state_bitmap);
1537 prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap;
1538 icount = &tiocmget->icount;
1539 spin_lock(&serial->serial_lock);
1540 if ((UART_state_bitmap & B_OVERRUN) !=
1541 (prev_UART_state_bitmap & B_OVERRUN))
1542 icount->parity++;
1543 if ((UART_state_bitmap & B_PARITY) !=
1544 (prev_UART_state_bitmap & B_PARITY))
1545 icount->parity++;
1546 if ((UART_state_bitmap & B_FRAMING) !=
1547 (prev_UART_state_bitmap & B_FRAMING))
1548 icount->frame++;
1549 if ((UART_state_bitmap & B_RING_SIGNAL) &&
1550 !(prev_UART_state_bitmap & B_RING_SIGNAL))
1551 icount->rng++;
1552 if ((UART_state_bitmap & B_BREAK) !=
1553 (prev_UART_state_bitmap & B_BREAK))
1554 icount->brk++;
1555 if ((UART_state_bitmap & B_TX_CARRIER) !=
1556 (prev_UART_state_bitmap & B_TX_CARRIER))
1557 icount->dsr++;
1558 if ((UART_state_bitmap & B_RX_CARRIER) !=
1559 (prev_UART_state_bitmap & B_RX_CARRIER))
1560 icount->dcd++;
1561 tiocmget->prev_UART_state_bitmap = UART_state_bitmap;
1562 spin_unlock(&serial->serial_lock);
1563 tiocmget->intr_completed = 1;
1564 wake_up_interruptible(&tiocmget->waitq);
1565 }
1566 memset(serial_state_notification, 0,
1567 sizeof(struct hso_serial_state_notification));
1568 tiocmget_submit_urb(serial,
1569 tiocmget,
1570 serial->parent->usb);
1571}
1572
1573/*
1574 * next few functions largely stolen from drivers/serial/serial_core.c
1575 */
1576/* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1577 * - mask passed in arg for lines of interest
1578 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1579 * Caller should use TIOCGICOUNT to see which one it was
1580 */
1581static int
1582hso_wait_modem_status(struct hso_serial *serial, unsigned long arg)
1583{
1584 DECLARE_WAITQUEUE(wait, current);
1585 struct uart_icount cprev, cnow;
1586 struct hso_tiocmget *tiocmget;
1587 int ret;
1588
1589 tiocmget = serial->tiocmget;
1590 if (!tiocmget)
1591 return -ENOENT;
1592 /*
1593 * note the counters on entry
1594 */
1595 spin_lock_irq(&serial->serial_lock);
1596 memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount));
1597 spin_unlock_irq(&serial->serial_lock);
1598 add_wait_queue(&tiocmget->waitq, &wait);
1599 for (;;) {
1600 spin_lock_irq(&serial->serial_lock);
1601 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1602 spin_unlock_irq(&serial->serial_lock);
1603 set_current_state(TASK_INTERRUPTIBLE);
1604 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1605 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1606 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) {
1607 ret = 0;
1608 break;
1609 }
1610 schedule();
1611 /* see if a signal did it */
1612 if (signal_pending(current)) {
1613 ret = -ERESTARTSYS;
1614 break;
1615 }
1616 cprev = cnow;
1617 }
1618 current->state = TASK_RUNNING;
1619 remove_wait_queue(&tiocmget->waitq, &wait);
1620
1621 return ret;
1622}
1623
1624/*
1625 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
1626 * Return: write counters to the user passed counter struct
1627 * NB: both 1->0 and 0->1 transitions are counted except for
1628 * RI where only 0->1 is counted.
1629 */
1630static int hso_get_count(struct hso_serial *serial,
1631 struct serial_icounter_struct __user *icnt)
1632{
1633 struct serial_icounter_struct icount;
1634 struct uart_icount cnow;
1635 struct hso_tiocmget *tiocmget = serial->tiocmget;
1636
1637 if (!tiocmget)
1638 return -ENOENT;
1639 spin_lock_irq(&serial->serial_lock);
1640 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1641 spin_unlock_irq(&serial->serial_lock);
1642
1643 icount.cts = cnow.cts;
1644 icount.dsr = cnow.dsr;
1645 icount.rng = cnow.rng;
1646 icount.dcd = cnow.dcd;
1647 icount.rx = cnow.rx;
1648 icount.tx = cnow.tx;
1649 icount.frame = cnow.frame;
1650 icount.overrun = cnow.overrun;
1651 icount.parity = cnow.parity;
1652 icount.brk = cnow.brk;
1653 icount.buf_overrun = cnow.buf_overrun;
1654
1655 return copy_to_user(icnt, &icount, sizeof(icount)) ? -EFAULT : 0;
1656}
1657
72dc1c09
GKH		 1658
1659static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file)
1660{
542f5482 1661 int retval;
72dc1c09 1662 struct hso_serial *serial = get_serial_by_tty(tty);
542f5482
DJB		 1663 struct hso_tiocmget *tiocmget;
1664 u16 UART_state_bitmap;
72dc1c09
GKH		 1665
1666 /* sanity check */
1667 if (!serial) {
1668 D1("no tty structures");
1669 return -EINVAL;
1670 }
542f5482
DJB		 1671 spin_lock_irq(&serial->serial_lock);
1672 retval = ((serial->rts_state) ? TIOCM_RTS : 0) |
72dc1c09 1673 ((serial->dtr_state) ? TIOCM_DTR : 0);
542f5482
DJB		 1674 tiocmget = serial->tiocmget;
1675 if (tiocmget) {
1676
1677 UART_state_bitmap = le16_to_cpu(
1678 tiocmget->prev_UART_state_bitmap);
1679 if (UART_state_bitmap & B_RING_SIGNAL)
1680 retval |= TIOCM_RNG;
1681 if (UART_state_bitmap & B_RX_CARRIER)
1682 retval |= TIOCM_CD;
1683 if (UART_state_bitmap & B_TX_CARRIER)
1684 retval |= TIOCM_DSR;
1685 }
1686 spin_unlock_irq(&serial->serial_lock);
1687 return retval;
72dc1c09
GKH		 1688}
1689
1690static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
1691 unsigned int set, unsigned int clear)
1692{
1693 int val = 0;
1694 unsigned long flags;
1695 int if_num;
1696 struct hso_serial *serial = get_serial_by_tty(tty);
1697
1698 /* sanity check */
1699 if (!serial) {
1700 D1("no tty structures");
1701 return -EINVAL;
1702 }
1703 if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber;
1704
1705 spin_lock_irqsave(&serial->serial_lock, flags);
1706 if (set & TIOCM_RTS)
1707 serial->rts_state = 1;
1708 if (set & TIOCM_DTR)
1709 serial->dtr_state = 1;
1710
1711 if (clear & TIOCM_RTS)
1712 serial->rts_state = 0;
1713 if (clear & TIOCM_DTR)
1714 serial->dtr_state = 0;
1715
1716 if (serial->dtr_state)
1717 val |= 0x01;
1718 if (serial->rts_state)
1719 val |= 0x02;
1720
1721 spin_unlock_irqrestore(&serial->serial_lock, flags);
1722
1723 return usb_control_msg(serial->parent->usb,
1724 usb_rcvctrlpipe(serial->parent->usb, 0), 0x22,
1725 0x21, val, if_num, NULL, 0,
1726 USB_CTRL_SET_TIMEOUT);
1727}
1728
542f5482
DJB		 1729static int hso_serial_ioctl(struct tty_struct *tty, struct file *file,
1730 unsigned int cmd, unsigned long arg)
1731{
1732 struct hso_serial *serial = get_serial_by_tty(tty);
1733 void __user *uarg = (void __user *)arg;
1734 int ret = 0;
1735 D4("IOCTL cmd: %d, arg: %ld", cmd, arg);
1736
1737 if (!serial)
1738 return -ENODEV;
1739 switch (cmd) {
1740 case TIOCMIWAIT:
1741 ret = hso_wait_modem_status(serial, arg);
1742 break;
1743
1744 case TIOCGICOUNT:
1745 ret = hso_get_count(serial, uarg);
1746 break;
1747 default:
1748 ret = -ENOIOCTLCMD;
1749 break;
1750 }
1751 return ret;
1752}
1753
1754
72dc1c09
GKH		 1755/* starts a transmit */
1756static void hso_kick_transmit(struct hso_serial *serial)
1757{
1758 u8 *temp;
1759 unsigned long flags;
1760 int res;
1761
1762 spin_lock_irqsave(&serial->serial_lock, flags);
1763 if (!serial->tx_buffer_count)
1764 goto out;
1765
1766 if (serial->tx_urb_used)
1767 goto out;
1768
1769 /* Wakeup USB interface if necessary */
1770 if (hso_get_activity(serial->parent) == -EAGAIN)
1771 goto out;
1772
1773 /* Switch pointers around to avoid memcpy */
1774 temp = serial->tx_buffer;
1775 serial->tx_buffer = serial->tx_data;
1776 serial->tx_data = temp;
1777 serial->tx_data_count = serial->tx_buffer_count;
1778 serial->tx_buffer_count = 0;
1779
1780 /* If temp is set, it means we switched buffers */
1781 if (temp && serial->write_data) {
1782 res = serial->write_data(serial);
1783 if (res >= 0)
1784 serial->tx_urb_used = 1;
1785 }
1786out:
1787 spin_unlock_irqrestore(&serial->serial_lock, flags);
1788}
1789
1790/* make a request (for reading and writing data to muxed serial port) */
1791static int mux_device_request(struct hso_serial *serial, u8 type, u16 port,
1792 struct urb *ctrl_urb,
1793 struct usb_ctrlrequest *ctrl_req,
1794 u8 *ctrl_urb_data, u32 size)
1795{
1796 int result;
1797 int pipe;
1798
1799 /* Sanity check */
1800 if (!serial || !ctrl_urb || !ctrl_req) {
1801 printk(KERN_ERR "%s: Wrong arguments\n", __func__);
1802 return -EINVAL;
1803 }
1804
1805 /* initialize */
1806 ctrl_req->wValue = 0;
b74f62c1
DJB		 1807 ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port));
1808 ctrl_req->wLength = cpu_to_le16(size);
72dc1c09
GKH		 1809
1810 if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) {
1811 /* Reading command */
1812 ctrl_req->bRequestType = USB_DIR_IN |
1813 USB_TYPE_OPTION_VENDOR |
1814 USB_RECIP_INTERFACE;
1815 ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
1816 pipe = usb_rcvctrlpipe(serial->parent->usb, 0);
1817 } else {
1818 /* Writing command */
1819 ctrl_req->bRequestType = USB_DIR_OUT |
1820 USB_TYPE_OPTION_VENDOR |
1821 USB_RECIP_INTERFACE;
1822 ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND;
1823 pipe = usb_sndctrlpipe(serial->parent->usb, 0);
1824 }
1825 /* syslog */
1826 D2("%s command (%02x) len: %d, port: %d",
1827 type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write",
1828 ctrl_req->bRequestType, ctrl_req->wLength, port);
1829
1830 /* Load ctrl urb */
1831 ctrl_urb->transfer_flags = 0;
1832 usb_fill_control_urb(ctrl_urb,
1833 serial->parent->usb,
1834 pipe,
1835 (u8 *) ctrl_req,
1836 ctrl_urb_data, size, ctrl_callback, serial);
1837 /* Send it on merry way */
1838 result = usb_submit_urb(ctrl_urb, GFP_ATOMIC);
1839 if (result) {
1840 dev_err(&ctrl_urb->dev->dev,
1841 "%s failed submit ctrl_urb %d type %d", __func__,
1842 result, type);
1843 return result;
1844 }
1845
1846 /* done */
1847 return size;
1848}
1849
1850/* called by intr_callback when read occurs */
1851static int hso_mux_serial_read(struct hso_serial *serial)
1852{
1853 if (!serial)
1854 return -EINVAL;
1855
1856 /* clean data */
1857 memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE);
1858 /* make the request */
1859
1860 if (serial->num_rx_urbs != 1) {
1861 dev_err(&serial->parent->interface->dev,
1862 "ERROR: mux'd reads with multiple buffers "
1863 "not possible\n");
1864 return 0;
1865 }
1866 return mux_device_request(serial,
1867 USB_CDC_GET_ENCAPSULATED_RESPONSE,
1868 serial->parent->port_spec & HSO_PORT_MASK,
1869 serial->rx_urb[0],
1870 &serial->ctrl_req_rx,
1871 serial->rx_data[0], serial->rx_data_length);
1872}
1873
1874/* used for muxed serial port callback (muxed serial read) */
1875static void intr_callback(struct urb *urb)
1876{
1877 struct hso_shared_int *shared_int = urb->context;
1878 struct hso_serial *serial;
1879 unsigned char *port_req;
1880 int status = urb->status;
1881 int i;
1882
1883 usb_mark_last_busy(urb->dev);
1884
1885 /* sanity check */
1886 if (!shared_int)
1887 return;
1888
1889 /* status check */
1890 if (status) {
1891 log_usb_status(status, __func__);
1892 return;
1893 }
1894 D4("\n--- Got intr callback 0x%02X ---", status);
1895
1896 /* what request? */
1897 port_req = urb->transfer_buffer;
1898 D4(" port_req = 0x%.2X\n", *port_req);
1899 /* loop over all muxed ports to find the one sending this */
1900 for (i = 0; i < 8; i++) {
1901 /* max 8 channels on MUX */
1902 if (*port_req & (1 << i)) {
1903 serial = get_serial_by_shared_int_and_type(shared_int,
1904 (1 << i));
1905 if (serial != NULL) {
1906 D1("Pending read interrupt on port %d\n", i);
8ef5ba63
DJB		 1907 spin_lock(&serial->serial_lock);
1908 if (serial->rx_state == RX_IDLE) {
72dc1c09
GKH		 1909 /* Setup and send a ctrl req read on
1910 * port i */
8ef5ba63
DJB		 1911 if (!serial->rx_urb_filled[0]) {
1912 serial->rx_state = RX_SENT;
1913 hso_mux_serial_read(serial);
1914 } else
1915 serial->rx_state = RX_PENDING;
1916
72dc1c09
GKH		 1917 } else {
1918 D1("Already pending a read on "
1919 "port %d\n", i);
1920 }
8ef5ba63 1921 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 1922 }
1923 }
1924 }
1925 /* Resubmit interrupt urb */
1926 hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC);
1927}
1928
1929/* called for writing to muxed serial port */
1930static int hso_mux_serial_write_data(struct hso_serial *serial)
1931{
1932 if (NULL == serial)
1933 return -EINVAL;
1934
1935 return mux_device_request(serial,
1936 USB_CDC_SEND_ENCAPSULATED_COMMAND,
1937 serial->parent->port_spec & HSO_PORT_MASK,
1938 serial->tx_urb,
1939 &serial->ctrl_req_tx,
1940 serial->tx_data, serial->tx_data_count);
1941}
1942
1943/* write callback for Diag and CS port */
1944static void hso_std_serial_write_bulk_callback(struct urb *urb)
1945{
1946 struct hso_serial *serial = urb->context;
1947 int status = urb->status;
e136e303 1948 struct tty_struct *tty;
72dc1c09
GKH		 1949
1950 /* sanity check */
1951 if (!serial) {
1952 D1("serial == NULL");
1953 return;
1954 }
1955
1956 spin_lock(&serial->serial_lock);
1957 serial->tx_urb_used = 0;
e136e303 1958 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 1959 spin_unlock(&serial->serial_lock);
1960 if (status) {
1961 log_usb_status(status, __func__);
e136e303 1962 tty_kref_put(tty);
72dc1c09
GKH		 1963 return;
1964 }
1965 hso_put_activity(serial->parent);
e136e303
AC		 1966 if (tty) {
1967 tty_wakeup(tty);
1968 tty_kref_put(tty);
1969 }
72dc1c09
GKH		 1970 hso_kick_transmit(serial);
1971
1972 D1(" ");
1973 return;
1974}
1975
1976/* called for writing diag or CS serial port */
1977static int hso_std_serial_write_data(struct hso_serial *serial)
1978{
1979 int count = serial->tx_data_count;
1980 int result;
1981
1982 usb_fill_bulk_urb(serial->tx_urb,
1983 serial->parent->usb,
1984 usb_sndbulkpipe(serial->parent->usb,
1985 serial->out_endp->
1986 bEndpointAddress & 0x7F),
1987 serial->tx_data, serial->tx_data_count,
1988 hso_std_serial_write_bulk_callback, serial);
1989
1990 result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC);
1991 if (result) {
1992 dev_warn(&serial->parent->usb->dev,
1993 "Failed to submit urb - res %d\n", result);
1994 return result;
1995 }
1996
1997 return count;
1998}
1999
2000/* callback after read or write on muxed serial port */
2001static void ctrl_callback(struct urb *urb)
2002{
2003 struct hso_serial *serial = urb->context;
2004 struct usb_ctrlrequest *req;
2005 int status = urb->status;
e136e303 2006 struct tty_struct *tty;
72dc1c09
GKH		 2007
2008 /* sanity check */
2009 if (!serial)
2010 return;
2011
2012 spin_lock(&serial->serial_lock);
2013 serial->tx_urb_used = 0;
e136e303 2014 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 2015 spin_unlock(&serial->serial_lock);
2016 if (status) {
2017 log_usb_status(status, __func__);
e136e303 2018 tty_kref_put(tty);
72dc1c09
GKH		 2019 return;
2020 }
2021
2022 /* what request? */
2023 req = (struct usb_ctrlrequest *)(urb->setup_packet);
2024 D4("\n--- Got muxed ctrl callback 0x%02X ---", status);
2025 D4("Actual length of urb = %d\n", urb->actual_length);
2026 DUMP1(urb->transfer_buffer, urb->actual_length);
2027
2028 if (req->bRequestType ==
2029 (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) {
2030 /* response to a read command */
8ef5ba63
DJB		 2031 serial->rx_urb_filled[0] = 1;
2032 spin_lock(&serial->serial_lock);
2033 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
2034 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 2035 } else {
2036 hso_put_activity(serial->parent);
e136e303
AC		 2037 if (tty)
2038 tty_wakeup(tty);
72dc1c09
GKH		 2039 /* response to a write command */
2040 hso_kick_transmit(serial);
2041 }
e136e303 2042 tty_kref_put(tty);
72dc1c09
GKH		 2043}
2044
2045/* handle RX data for serial port */
8ef5ba63 2046static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
72dc1c09 2047{
e136e303 2048 struct tty_struct *tty;
8ef5ba63
DJB		 2049 int write_length_remaining = 0;
2050 int curr_write_len;
e136e303 2051
72dc1c09
GKH		 2052 /* Sanity check */
2053 if (urb == NULL || serial == NULL) {
2054 D1("serial = NULL");
8ef5ba63 2055 return -2;
72dc1c09
GKH		 2056 }
2057
d45eb81c 2058 /* All callers to put_rxbuf_data hold serial_lock */
e136e303 2059 tty = tty_kref_get(serial->tty);
e136e303 2060
72dc1c09 2061 /* Push data to tty */
8ef5ba63
DJB		 2062 if (tty) {
2063 write_length_remaining = urb->actual_length -
2064 serial->curr_rx_urb_offset;
72dc1c09 2065 D1("data to push to tty");
8ef5ba63 2066 while (write_length_remaining) {
5839b414
DJB		 2067 if (test_bit(TTY_THROTTLED, &tty->flags)) {
2068 tty_kref_put(tty);
8ef5ba63 2069 return -1;
5839b414 2070 }
8ef5ba63
DJB		 2071 curr_write_len = tty_insert_flip_string
2072 (tty, urb->transfer_buffer +
2073 serial->curr_rx_urb_offset,
2074 write_length_remaining);
2075 serial->curr_rx_urb_offset += curr_write_len;
2076 write_length_remaining -= curr_write_len;
2077 tty_flip_buffer_push(tty);
72dc1c09 2078 }
72dc1c09 2079 }
8ef5ba63
DJB		 2080 if (write_length_remaining == 0) {
2081 serial->curr_rx_urb_offset = 0;
2082 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
72dc1c09 2083 }
e136e303 2084 tty_kref_put(tty);
8ef5ba63 2085 return write_length_remaining;
72dc1c09
GKH		 2086}
2087
8ef5ba63 2088
72dc1c09
GKH		 2089/* Base driver functions */
2090
2091static void hso_log_port(struct hso_device *hso_dev)
2092{
2093 char *port_type;
2094 char port_dev[20];
2095
2096 switch (hso_dev->port_spec & HSO_PORT_MASK) {
2097 case HSO_PORT_CONTROL:
2098 port_type = "Control";
2099 break;
2100 case HSO_PORT_APP:
2101 port_type = "Application";
2102 break;
2103 case HSO_PORT_GPS:
2104 port_type = "GPS";
2105 break;
2106 case HSO_PORT_GPS_CONTROL:
2107 port_type = "GPS control";
2108 break;
2109 case HSO_PORT_APP2:
2110 port_type = "Application2";
2111 break;
2112 case HSO_PORT_PCSC:
2113 port_type = "PCSC";
2114 break;
2115 case HSO_PORT_DIAG:
2116 port_type = "Diagnostic";
2117 break;
2118 case HSO_PORT_DIAG2:
2119 port_type = "Diagnostic2";
2120 break;
2121 case HSO_PORT_MODEM:
2122 port_type = "Modem";
2123 break;
2124 case HSO_PORT_NETWORK:
2125 port_type = "Network";
2126 break;
2127 default:
2128 port_type = "Unknown";
2129 break;
2130 }
2131 if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2132 sprintf(port_dev, "%s", dev2net(hso_dev)->net->name);
2133 } else
2134 sprintf(port_dev, "/dev/%s%d", tty_filename,
2135 dev2ser(hso_dev)->minor);
2136
2137 dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n",
2138 port_type, port_dev);
2139}
2140
2141static int hso_start_net_device(struct hso_device *hso_dev)
2142{
2143 int i, result = 0;
2144 struct hso_net *hso_net = dev2net(hso_dev);
2145
2146 if (!hso_net)
2147 return -ENODEV;
2148
2149 /* send URBs for all read buffers */
2150 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2151
2152 /* Prep a receive URB */
2153 usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i],
2154 hso_dev->usb,
2155 usb_rcvbulkpipe(hso_dev->usb,
2156 hso_net->in_endp->
2157 bEndpointAddress & 0x7F),
2158 hso_net->mux_bulk_rx_buf_pool[i],
2159 MUX_BULK_RX_BUF_SIZE, read_bulk_callback,
2160 hso_net);
2161
2162 /* Put it out there so the device can send us stuff */
2163 result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i],
2164 GFP_NOIO);
2165 if (result)
2166 dev_warn(&hso_dev->usb->dev,
2167 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__,
2168 i, result);
2169 }
2170
2171 return result;
2172}
2173
2174static int hso_stop_net_device(struct hso_device *hso_dev)
2175{
2176 int i;
2177 struct hso_net *hso_net = dev2net(hso_dev);
2178
2179 if (!hso_net)
2180 return -ENODEV;
2181
2182 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2183 if (hso_net->mux_bulk_rx_urb_pool[i])
2184 usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2185
2186 }
2187 if (hso_net->mux_bulk_tx_urb)
2188 usb_kill_urb(hso_net->mux_bulk_tx_urb);
2189
2190 return 0;
2191}
2192
2193static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags)
2194{
2195 int i, result = 0;
2196 struct hso_serial *serial = dev2ser(hso_dev);
2197
2198 if (!serial)
2199 return -ENODEV;
2200
2201 /* If it is not the MUX port fill in and submit a bulk urb (already
2202 * allocated in hso_serial_start) */
2203 if (!(serial->parent->port_spec & HSO_INTF_MUX)) {
2204 for (i = 0; i < serial->num_rx_urbs; i++) {
2205 usb_fill_bulk_urb(serial->rx_urb[i],
2206 serial->parent->usb,
2207 usb_rcvbulkpipe(serial->parent->usb,
2208 serial->in_endp->
2209 bEndpointAddress &
2210 0x7F),
2211 serial->rx_data[i],
2212 serial->rx_data_length,
2213 hso_std_serial_read_bulk_callback,
2214 serial);
2215 result = usb_submit_urb(serial->rx_urb[i], flags);
2216 if (result) {
2217 dev_warn(&serial->parent->usb->dev,
2218 "Failed to submit urb - res %d\n",
2219 result);
2220 break;
2221 }
2222 }
2223 } else {
2224 mutex_lock(&serial->shared_int->shared_int_lock);
2225 if (!serial->shared_int->use_count) {
2226 result =
2227 hso_mux_submit_intr_urb(serial->shared_int,
2228 hso_dev->usb, flags);
2229 }
2230 serial->shared_int->use_count++;
2231 mutex_unlock(&serial->shared_int->shared_int_lock);
2232 }
542f5482
DJB		 2233 if (serial->tiocmget)
2234 tiocmget_submit_urb(serial,
2235 serial->tiocmget,
2236 serial->parent->usb);
72dc1c09
GKH		 2237 return result;
2238}
2239
2240static int hso_stop_serial_device(struct hso_device *hso_dev)
2241{
2242 int i;
2243 struct hso_serial *serial = dev2ser(hso_dev);
542f5482 2244 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2245
2246 if (!serial)
2247 return -ENODEV;
2248
2249 for (i = 0; i < serial->num_rx_urbs; i++) {
8ef5ba63 2250 if (serial->rx_urb[i]) {
72dc1c09 2251 usb_kill_urb(serial->rx_urb[i]);
8ef5ba63
DJB		 2252 serial->rx_urb_filled[i] = 0;
2253 }
72dc1c09 2254 }
8ef5ba63
DJB		 2255 serial->curr_rx_urb_idx = 0;
2256 serial->curr_rx_urb_offset = 0;
72dc1c09
GKH		 2257
2258 if (serial->tx_urb)
2259 usb_kill_urb(serial->tx_urb);
2260
2261 if (serial->shared_int) {
2262 mutex_lock(&serial->shared_int->shared_int_lock);
2263 if (serial->shared_int->use_count &&
2264 (--serial->shared_int->use_count == 0)) {
2265 struct urb *urb;
2266
2267 urb = serial->shared_int->shared_intr_urb;
2268 if (urb)
2269 usb_kill_urb(urb);
2270 }
2271 mutex_unlock(&serial->shared_int->shared_int_lock);
2272 }
542f5482
DJB		 2273 tiocmget = serial->tiocmget;
2274 if (tiocmget) {
2275 wake_up_interruptible(&tiocmget->waitq);
2276 usb_kill_urb(tiocmget->urb);
2277 }
72dc1c09
GKH		 2278
2279 return 0;
2280}
2281
2282static void hso_serial_common_free(struct hso_serial *serial)
2283{
2284 int i;
2285
2286 if (serial->parent->dev)
2287 device_remove_file(serial->parent->dev, &dev_attr_hsotype);
2288
2289 tty_unregister_device(tty_drv, serial->minor);
2290
2291 for (i = 0; i < serial->num_rx_urbs; i++) {
2292 /* unlink and free RX URB */
2293 usb_free_urb(serial->rx_urb[i]);
2294 /* free the RX buffer */
2295 kfree(serial->rx_data[i]);
2296 }
2297
2298 /* unlink and free TX URB */
2299 usb_free_urb(serial->tx_urb);
2300 kfree(serial->tx_data);
2301}
2302
2303static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
2304 int rx_size, int tx_size)
2305{
2306 struct device *dev;
2307 int minor;
2308 int i;
2309
2310 minor = get_free_serial_index();
2311 if (minor < 0)
2312 goto exit;
2313
2314 /* register our minor number */
2315 serial->parent->dev = tty_register_device(tty_drv, minor,
2316 &serial->parent->interface->dev);
2317 dev = serial->parent->dev;
1aec5bdf 2318 dev_set_drvdata(dev, serial->parent);
72dc1c09
GKH		 2319 i = device_create_file(dev, &dev_attr_hsotype);
2320
2321 /* fill in specific data for later use */
2322 serial->minor = minor;
2323 serial->magic = HSO_SERIAL_MAGIC;
2324 spin_lock_init(&serial->serial_lock);
2325 serial->num_rx_urbs = num_urbs;
2326
2327 /* RX, allocate urb and initialize */
2328
2329 /* prepare our RX buffer */
2330 serial->rx_data_length = rx_size;
2331 for (i = 0; i < serial->num_rx_urbs; i++) {
2332 serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
2333 if (!serial->rx_urb[i]) {
2334 dev_err(dev, "Could not allocate urb?\n");
2335 goto exit;
2336 }
2337 serial->rx_urb[i]->transfer_buffer = NULL;
2338 serial->rx_urb[i]->transfer_buffer_length = 0;
2339 serial->rx_data[i] = kzalloc(serial->rx_data_length,
2340 GFP_KERNEL);
2341 if (!serial->rx_data[i]) {
2342 dev_err(dev, "%s - Out of memory\n", __func__);
2343 goto exit;
2344 }
2345 }
2346
2347 /* TX, allocate urb and initialize */
2348 serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2349 if (!serial->tx_urb) {
2350 dev_err(dev, "Could not allocate urb?\n");
2351 goto exit;
2352 }
2353 serial->tx_urb->transfer_buffer = NULL;
2354 serial->tx_urb->transfer_buffer_length = 0;
2355 /* prepare our TX buffer */
2356 serial->tx_data_count = 0;
2357 serial->tx_buffer_count = 0;
2358 serial->tx_data_length = tx_size;
2359 serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL);
2360 if (!serial->tx_data) {
2361 dev_err(dev, "%s - Out of memory", __func__);
2362 goto exit;
2363 }
2364 serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL);
2365 if (!serial->tx_buffer) {
2366 dev_err(dev, "%s - Out of memory", __func__);
2367 goto exit;
2368 }
2369
2370 return 0;
2371exit:
2372 hso_serial_common_free(serial);
2373 return -1;
2374}
2375
72dc1c09
GKH		 2376/* Creates a general hso device */
2377static struct hso_device *hso_create_device(struct usb_interface *intf,
2378 int port_spec)
2379{
2380 struct hso_device *hso_dev;
2381
2382 hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC);
2383 if (!hso_dev)
2384 return NULL;
2385
2386 hso_dev->port_spec = port_spec;
2387 hso_dev->usb = interface_to_usbdev(intf);
2388 hso_dev->interface = intf;
2389 kref_init(&hso_dev->ref);
ab153d84
DM		 2390 mutex_init(&hso_dev->mutex);
2391
72dc1c09
GKH		 2392 INIT_WORK(&hso_dev->async_get_intf, async_get_intf);
2393 INIT_WORK(&hso_dev->async_put_intf, async_put_intf);
2394
2395 return hso_dev;
2396}
2397
2398/* Removes a network device in the network device table */
2399static int remove_net_device(struct hso_device *hso_dev)
2400{
2401 int i;
2402
2403 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2404 if (network_table[i] == hso_dev) {
2405 network_table[i] = NULL;
2406 break;
2407 }
2408 }
2409 if (i == HSO_MAX_NET_DEVICES)
2410 return -1;
2411 return 0;
2412}
2413
2414/* Frees our network device */
2415static void hso_free_net_device(struct hso_device *hso_dev)
2416{
2417 int i;
2418 struct hso_net *hso_net = dev2net(hso_dev);
2419
2420 if (!hso_net)
2421 return;
2422
3b7d2b31
JD		 2423 remove_net_device(hso_net->parent);
2424
2425 if (hso_net->net) {
2426 unregister_netdev(hso_net->net);
2427 free_netdev(hso_net->net);
2428 }
2429
72dc1c09
GKH		 2430 /* start freeing */
2431 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2432 usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2433 kfree(hso_net->mux_bulk_rx_buf_pool[i]);
3b7d2b31 2434 hso_net->mux_bulk_rx_buf_pool[i] = NULL;
72dc1c09
GKH		 2435 }
2436 usb_free_urb(hso_net->mux_bulk_tx_urb);
2437 kfree(hso_net->mux_bulk_tx_buf);
3b7d2b31 2438 hso_net->mux_bulk_tx_buf = NULL;
ab153d84 2439
e44578ea 2440 kfree(hso_dev);
72dc1c09
GKH		 2441}
2442
c266cb4e
SH		 2443static const struct net_device_ops hso_netdev_ops = {
2444 .ndo_open = hso_net_open,
2445 .ndo_stop = hso_net_close,
2446 .ndo_start_xmit = hso_net_start_xmit,
2447 .ndo_tx_timeout = hso_net_tx_timeout,
2448};
2449
72dc1c09
GKH		 2450/* initialize the network interface */
2451static void hso_net_init(struct net_device *net)
2452{
2453 struct hso_net *hso_net = netdev_priv(net);
2454
2455 D1("sizeof hso_net is %d", (int)sizeof(*hso_net));
2456
2457 /* fill in the other fields */
c266cb4e 2458 net->netdev_ops = &hso_netdev_ops;
72dc1c09
GKH		 2459 net->watchdog_timeo = HSO_NET_TX_TIMEOUT;
2460 net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
2461 net->type = ARPHRD_NONE;
2462 net->mtu = DEFAULT_MTU - 14;
2463 net->tx_queue_len = 10;
2464 SET_ETHTOOL_OPS(net, &ops);
2465
2466 /* and initialize the semaphore */
2467 spin_lock_init(&hso_net->net_lock);
2468}
2469
2470/* Adds a network device in the network device table */
2471static int add_net_device(struct hso_device *hso_dev)
2472{
2473 int i;
2474
2475 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2476 if (network_table[i] == NULL) {
2477 network_table[i] = hso_dev;
2478 break;
2479 }
2480 }
2481 if (i == HSO_MAX_NET_DEVICES)
2482 return -1;
2483 return 0;
2484}
2485
19d337df 2486static int hso_rfkill_set_block(void *data, bool blocked)
72dc1c09
GKH		 2487{
2488 struct hso_device *hso_dev = data;
19d337df 2489 int enabled = !blocked;
72dc1c09
GKH		 2490 int rv;
2491
ab153d84 2492 mutex_lock(&hso_dev->mutex);
72dc1c09
GKH		 2493 if (hso_dev->usb_gone)
2494 rv = 0;
2495 else
2496 rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0),
2497 enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
2498 USB_CTRL_SET_TIMEOUT);
ab153d84 2499 mutex_unlock(&hso_dev->mutex);
72dc1c09
GKH		 2500 return rv;
2501}
2502
19d337df
JB		 2503static const struct rfkill_ops hso_rfkill_ops = {
2504 .set_block = hso_rfkill_set_block,
2505};
2506
72dc1c09
GKH		 2507/* Creates and sets up everything for rfkill */
2508static void hso_create_rfkill(struct hso_device *hso_dev,
2509 struct usb_interface *interface)
2510{
2511 struct hso_net *hso_net = dev2net(hso_dev);
939a9516 2512 struct device *dev = &hso_net->net->dev;
72dc1c09
GKH		 2513 char *rfkn;
2514
72dc1c09 2515 rfkn = kzalloc(20, GFP_KERNEL);
19d337df 2516 if (!rfkn)
939a9516 2517 dev_err(dev, "%s - Out of memory\n", __func__);
19d337df 2518
72dc1c09
GKH		 2519 snprintf(rfkn, 20, "hso-%d",
2520 interface->altsetting->desc.bInterfaceNumber);
19d337df
JB		 2521
2522 hso_net->rfkill = rfkill_alloc(rfkn,
2523 &interface_to_usbdev(interface)->dev,
2524 RFKILL_TYPE_WWAN,
2525 &hso_rfkill_ops, hso_dev);
2526 if (!hso_net->rfkill) {
2527 dev_err(dev, "%s - Out of memory\n", __func__);
2528 kfree(rfkn);
2529 return;
2530 }
72dc1c09 2531 if (rfkill_register(hso_net->rfkill) < 0) {
19d337df 2532 rfkill_destroy(hso_net->rfkill);
72dc1c09 2533 kfree(rfkn);
939a9516
JM		 2534 hso_net->rfkill = NULL;
2535 dev_err(dev, "%s - Failed to register rfkill\n", __func__);
72dc1c09
GKH		 2536 return;
2537 }
2538}
2539
384912ed
MH		 2540static struct device_type hso_type = {
2541 .name = "wwan",
2542};
2543
72dc1c09 2544/* Creates our network device */
0de8ca59
JD		 2545static struct hso_device *hso_create_net_device(struct usb_interface *interface,
2546 int port_spec)
72dc1c09
GKH		 2547{
2548 int result, i;
2549 struct net_device *net;
2550 struct hso_net *hso_net;
2551 struct hso_device *hso_dev;
2552
0de8ca59 2553 hso_dev = hso_create_device(interface, port_spec);
72dc1c09
GKH		 2554 if (!hso_dev)
2555 return NULL;
2556
2557 /* allocate our network device, then we can put in our private data */
2558 /* call hso_net_init to do the basic initialization */
2559 net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init);
2560 if (!net) {
2561 dev_err(&interface->dev, "Unable to create ethernet device\n");
2562 goto exit;
2563 }
2564
2565 hso_net = netdev_priv(net);
2566
2567 hso_dev->port_data.dev_net = hso_net;
2568 hso_net->net = net;
2569 hso_net->parent = hso_dev;
2570
2571 hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2572 USB_DIR_IN);
2573 if (!hso_net->in_endp) {
2574 dev_err(&interface->dev, "Can't find BULK IN endpoint\n");
2575 goto exit;
2576 }
2577 hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2578 USB_DIR_OUT);
2579 if (!hso_net->out_endp) {
2580 dev_err(&interface->dev, "Can't find BULK OUT endpoint\n");
2581 goto exit;
2582 }
2583 SET_NETDEV_DEV(net, &interface->dev);
384912ed 2584 SET_NETDEV_DEVTYPE(net, &hso_type);
72dc1c09
GKH		 2585
2586 /* registering our net device */
2587 result = register_netdev(net);
2588 if (result) {
2589 dev_err(&interface->dev, "Failed to register device\n");
2590 goto exit;
2591 }
2592
2593 /* start allocating */
2594 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2595 hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL);
2596 if (!hso_net->mux_bulk_rx_urb_pool[i]) {
2597 dev_err(&interface->dev, "Could not allocate rx urb\n");
2598 goto exit;
2599 }
2600 hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE,
2601 GFP_KERNEL);
2602 if (!hso_net->mux_bulk_rx_buf_pool[i]) {
2603 dev_err(&interface->dev, "Could not allocate rx buf\n");
2604 goto exit;
2605 }
2606 }
2607 hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2608 if (!hso_net->mux_bulk_tx_urb) {
2609 dev_err(&interface->dev, "Could not allocate tx urb\n");
2610 goto exit;
2611 }
2612 hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL);
2613 if (!hso_net->mux_bulk_tx_buf) {
2614 dev_err(&interface->dev, "Could not allocate tx buf\n");
2615 goto exit;
2616 }
2617
2618 add_net_device(hso_dev);
2619
2620 hso_log_port(hso_dev);
2621
2622 hso_create_rfkill(hso_dev, interface);
2623
2624 return hso_dev;
2625exit:
2626 hso_free_net_device(hso_dev);
2627 return NULL;
2628}
2629
542f5482
DJB		 2630static void hso_free_tiomget(struct hso_serial *serial)
2631{
2632 struct hso_tiocmget *tiocmget = serial->tiocmget;
2633 if (tiocmget) {
542f5482
DJB		 2634 if (tiocmget->urb) {
2635 usb_free_urb(tiocmget->urb);
2636 tiocmget->urb = NULL;
2637 }
2638 serial->tiocmget = NULL;
3b7d2b31 2639 kfree(tiocmget);
542f5482
DJB		 2640
2641 }
2642}
2643
72dc1c09
GKH		 2644/* Frees an AT channel ( goes for both mux and non-mux ) */
2645static void hso_free_serial_device(struct hso_device *hso_dev)
2646{
2647 struct hso_serial *serial = dev2ser(hso_dev);
2648
2649 if (!serial)
2650 return;
2651 set_serial_by_index(serial->minor, NULL);
2652
2653 hso_serial_common_free(serial);
2654
2655 if (serial->shared_int) {
2656 mutex_lock(&serial->shared_int->shared_int_lock);
2657 if (--serial->shared_int->ref_count == 0)
2658 hso_free_shared_int(serial->shared_int);
2659 else
2660 mutex_unlock(&serial->shared_int->shared_int_lock);
2661 }
542f5482 2662 hso_free_tiomget(serial);
72dc1c09 2663 kfree(serial);
e44578ea 2664 kfree(hso_dev);
72dc1c09
GKH		 2665}
2666
2667/* Creates a bulk AT channel */
2668static struct hso_device *hso_create_bulk_serial_device(
2669 struct usb_interface *interface, int port)
2670{
2671 struct hso_device *hso_dev;
2672 struct hso_serial *serial;
2673 int num_urbs;
542f5482 2674 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2675
2676 hso_dev = hso_create_device(interface, port);
2677 if (!hso_dev)
2678 return NULL;
2679
2680 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2681 if (!serial)
2682 goto exit;
2683
2684 serial->parent = hso_dev;
2685 hso_dev->port_data.dev_serial = serial;
2686
58eb17f1 2687 if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
72dc1c09 2688 num_urbs = 2;
542f5482
DJB		 2689 serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
2690 GFP_KERNEL);
2691 /* it isn't going to break our heart if serial->tiocmget
2692 * allocation fails don't bother checking this.
2693 */
2694 if (serial->tiocmget) {
2695 tiocmget = serial->tiocmget;
2696 tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
2697 if (tiocmget->urb) {
2698 mutex_init(&tiocmget->mutex);
2699 init_waitqueue_head(&tiocmget->waitq);
2700 tiocmget->endp = hso_get_ep(
2701 interface,
2702 USB_ENDPOINT_XFER_INT,
2703 USB_DIR_IN);
2704 } else
2705 hso_free_tiomget(serial);
2706 }
2707 }
72dc1c09
GKH		 2708 else
2709 num_urbs = 1;
2710
2711 if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE,
2712 BULK_URB_TX_SIZE))
2713 goto exit;
2714
2715 serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2716 USB_DIR_IN);
2717 if (!serial->in_endp) {
2718 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2719 goto exit2;
72dc1c09
GKH		 2720 }
2721
2722 if (!
2723 (serial->out_endp =
2724 hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) {
2725 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2726 goto exit2;
72dc1c09
GKH		 2727 }
2728
2729 serial->write_data = hso_std_serial_write_data;
2730
2731 /* and record this serial */
2732 set_serial_by_index(serial->minor, serial);
2733
2734 /* setup the proc dirs and files if needed */
2735 hso_log_port(hso_dev);
2736
2737 /* done, return it */
2738 return hso_dev;
e57b641d
AB		 2739
2740exit2:
2741 hso_serial_common_free(serial);
72dc1c09 2742exit:
542f5482 2743 hso_free_tiomget(serial);
72dc1c09 2744 kfree(serial);
e44578ea 2745 kfree(hso_dev);
72dc1c09
GKH		 2746 return NULL;
2747}
2748
2749/* Creates a multiplexed AT channel */
2750static
2751struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
2752 int port,
2753 struct hso_shared_int *mux)
2754{
2755 struct hso_device *hso_dev;
2756 struct hso_serial *serial;
2757 int port_spec;
2758
2759 port_spec = HSO_INTF_MUX;
2760 port_spec &= ~HSO_PORT_MASK;
2761
2762 port_spec |= hso_mux_to_port(port);
2763 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT)
2764 return NULL;
2765
2766 hso_dev = hso_create_device(interface, port_spec);
2767 if (!hso_dev)
2768 return NULL;
2769
2770 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2771 if (!serial)
2772 goto exit;
2773
2774 hso_dev->port_data.dev_serial = serial;
2775 serial->parent = hso_dev;
2776
2777 if (hso_serial_common_create
2778 (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE))
2779 goto exit;
2780
2781 serial->tx_data_length--;
2782 serial->write_data = hso_mux_serial_write_data;
2783
2784 serial->shared_int = mux;
2785 mutex_lock(&serial->shared_int->shared_int_lock);
2786 serial->shared_int->ref_count++;
2787 mutex_unlock(&serial->shared_int->shared_int_lock);
2788
2789 /* and record this serial */
2790 set_serial_by_index(serial->minor, serial);
2791
2792 /* setup the proc dirs and files if needed */
2793 hso_log_port(hso_dev);
2794
2795 /* done, return it */
2796 return hso_dev;
2797
2798exit:
2799 if (serial) {
2800 tty_unregister_device(tty_drv, serial->minor);
2801 kfree(serial);
2802 }
2803 if (hso_dev)
e44578ea 2804 kfree(hso_dev);
72dc1c09
GKH		 2805 return NULL;
2806
2807}
2808
2809static void hso_free_shared_int(struct hso_shared_int *mux)
2810{
2811 usb_free_urb(mux->shared_intr_urb);
2812 kfree(mux->shared_intr_buf);
2813 mutex_unlock(&mux->shared_int_lock);
2814 kfree(mux);
2815}
2816
2817static
2818struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface)
2819{
2820 struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL);
2821
2822 if (!mux)
2823 return NULL;
2824
2825 mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT,
2826 USB_DIR_IN);
2827 if (!mux->intr_endp) {
2828 dev_err(&interface->dev, "Can't find INT IN endpoint\n");
2829 goto exit;
2830 }
2831
2832 mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL);
2833 if (!mux->shared_intr_urb) {
2834 dev_err(&interface->dev, "Could not allocate intr urb?");
2835 goto exit;
2836 }
2837 mux->shared_intr_buf = kzalloc(mux->intr_endp->wMaxPacketSize,
2838 GFP_KERNEL);
2839 if (!mux->shared_intr_buf) {
2840 dev_err(&interface->dev, "Could not allocate intr buf?");
2841 goto exit;
2842 }
2843
2844 mutex_init(&mux->shared_int_lock);
2845
2846 return mux;
2847
2848exit:
2849 kfree(mux->shared_intr_buf);
2850 usb_free_urb(mux->shared_intr_urb);
2851 kfree(mux);
2852 return NULL;
2853}
2854
2855/* Gets the port spec for a certain interface */
2856static int hso_get_config_data(struct usb_interface *interface)
2857{
2858 struct usb_device *usbdev = interface_to_usbdev(interface);
2859 u8 config_data[17];
2860 u32 if_num = interface->altsetting->desc.bInterfaceNumber;
2861 s32 result;
2862
2863 if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
2864 0x86, 0xC0, 0, 0, config_data, 17,
2865 USB_CTRL_SET_TIMEOUT) != 0x11) {
2866 return -EIO;
2867 }
2868
2869 switch (config_data[if_num]) {
2870 case 0x0:
2871 result = 0;
2872 break;
2873 case 0x1:
2874 result = HSO_PORT_DIAG;
2875 break;
2876 case 0x2:
2877 result = HSO_PORT_GPS;
2878 break;
2879 case 0x3:
2880 result = HSO_PORT_GPS_CONTROL;
2881 break;
2882 case 0x4:
2883 result = HSO_PORT_APP;
2884 break;
2885 case 0x5:
2886 result = HSO_PORT_APP2;
2887 break;
2888 case 0x6:
2889 result = HSO_PORT_CONTROL;
2890 break;
2891 case 0x7:
2892 result = HSO_PORT_NETWORK;
2893 break;
2894 case 0x8:
2895 result = HSO_PORT_MODEM;
2896 break;
2897 case 0x9:
2898 result = HSO_PORT_MSD;
2899 break;
2900 case 0xa:
2901 result = HSO_PORT_PCSC;
2902 break;
2903 case 0xb:
2904 result = HSO_PORT_VOICE;
2905 break;
2906 default:
2907 result = 0;
2908 }
2909
2910 if (result)
2911 result |= HSO_INTF_BULK;
2912
2913 if (config_data[16] & 0x1)
2914 result |= HSO_INFO_CRC_BUG;
2915
2916 return result;
2917}
2918
2919/* called once for each interface upon device insertion */
2920static int hso_probe(struct usb_interface *interface,
2921 const struct usb_device_id *id)
2922{
2923 int mux, i, if_num, port_spec;
2924 unsigned char port_mask;
2925 struct hso_device *hso_dev = NULL;
2926 struct hso_shared_int *shared_int;
2927 struct hso_device *tmp_dev = NULL;
2928
2929 if_num = interface->altsetting->desc.bInterfaceNumber;
2930
2931 /* Get the interface/port specification from either driver_info or from
2932 * the device itself */
2933 if (id->driver_info)
2934 port_spec = ((u32 *)(id->driver_info))[if_num];
2935 else
2936 port_spec = hso_get_config_data(interface);
2937
2938 if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
2939 dev_err(&interface->dev, "Not our interface\n");
2940 return -ENODEV;
2941 }
2942 /* Check if we need to switch to alt interfaces prior to port
2943 * configuration */
2944 if (interface->num_altsetting > 1)
2945 usb_set_interface(interface_to_usbdev(interface), if_num, 1);
2946 interface->needs_remote_wakeup = 1;
2947
2948 /* Allocate new hso device(s) */
2949 switch (port_spec & HSO_INTF_MASK) {
2950 case HSO_INTF_MUX:
2951 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2952 /* Create the network device */
2953 if (!disable_net) {
0de8ca59
JD		 2954 hso_dev = hso_create_net_device(interface,
2955 port_spec);
72dc1c09
GKH		 2956 if (!hso_dev)
2957 goto exit;
2958 tmp_dev = hso_dev;
2959 }
2960 }
2961
2962 if (hso_get_mux_ports(interface, &port_mask))
2963 /* TODO: de-allocate everything */
2964 goto exit;
2965
2966 shared_int = hso_create_shared_int(interface);
2967 if (!shared_int)
2968 goto exit;
2969
2970 for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) {
2971 if (port_mask & i) {
2972 hso_dev = hso_create_mux_serial_device(
2973 interface, i, shared_int);
2974 if (!hso_dev)
2975 goto exit;
2976 }
2977 }
2978
2979 if (tmp_dev)
2980 hso_dev = tmp_dev;
2981 break;
2982
2983 case HSO_INTF_BULK:
2984 /* It's a regular bulk interface */
8e95a202
JP		 2985 if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) &&
2986 !disable_net)
0de8ca59 2987 hso_dev = hso_create_net_device(interface, port_spec);
72dc1c09
GKH		 2988 else
2989 hso_dev =
2990 hso_create_bulk_serial_device(interface, port_spec);
2991 if (!hso_dev)
2992 goto exit;
2993 break;
2994 default:
2995 goto exit;
2996 }
2997
72dc1c09
GKH		 2998 /* save our data pointer in this device */
2999 usb_set_intfdata(interface, hso_dev);
3000
3001 /* done */
3002 return 0;
3003exit:
3004 hso_free_interface(interface);
3005 return -ENODEV;
3006}
3007
3008/* device removed, cleaning up */
3009static void hso_disconnect(struct usb_interface *interface)
3010{
3011 hso_free_interface(interface);
3012
3013 /* remove reference of our private data */
3014 usb_set_intfdata(interface, NULL);
72dc1c09
GKH		 3015}
3016
3017static void async_get_intf(struct work_struct *data)
3018{
3019 struct hso_device *hso_dev =
3020 container_of(data, struct hso_device, async_get_intf);
3021 usb_autopm_get_interface(hso_dev->interface);
3022}
3023
3024static void async_put_intf(struct work_struct *data)
3025{
3026 struct hso_device *hso_dev =
3027 container_of(data, struct hso_device, async_put_intf);
3028 usb_autopm_put_interface(hso_dev->interface);
3029}
3030
3031static int hso_get_activity(struct hso_device *hso_dev)
3032{
3033 if (hso_dev->usb->state == USB_STATE_SUSPENDED) {
3034 if (!hso_dev->is_active) {
3035 hso_dev->is_active = 1;
3036 schedule_work(&hso_dev->async_get_intf);
3037 }
3038 }
3039
3040 if (hso_dev->usb->state != USB_STATE_CONFIGURED)
3041 return -EAGAIN;
3042
3043 usb_mark_last_busy(hso_dev->usb);
3044
3045 return 0;
3046}
3047
3048static int hso_put_activity(struct hso_device *hso_dev)
3049{
3050 if (hso_dev->usb->state != USB_STATE_SUSPENDED) {
3051 if (hso_dev->is_active) {
3052 hso_dev->is_active = 0;
3053 schedule_work(&hso_dev->async_put_intf);
3054 return -EAGAIN;
3055 }
3056 }
3057 hso_dev->is_active = 0;
3058 return 0;
3059}
3060
3061/* called by kernel when we need to suspend device */
3062static int hso_suspend(struct usb_interface *iface, pm_message_t message)
3063{
3064 int i, result;
3065
3066 /* Stop all serial ports */
3067 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3068 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3069 result = hso_stop_serial_device(serial_table[i]);
3070 if (result)
3071 goto out;
3072 }
3073 }
3074
3075 /* Stop all network ports */
3076 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3077 if (network_table[i] &&
3078 (network_table[i]->interface == iface)) {
3079 result = hso_stop_net_device(network_table[i]);
3080 if (result)
3081 goto out;
3082 }
3083 }
3084
3085out:
3086 return 0;
3087}
3088
3089/* called by kernel when we need to resume device */
3090static int hso_resume(struct usb_interface *iface)
3091{
3092 int i, result = 0;
3093 struct hso_net *hso_net;
3094
3095 /* Start all serial ports */
3096 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3097 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3098 if (dev2ser(serial_table[i])->open_count) {
3099 result =
3100 hso_start_serial_device(serial_table[i], GFP_NOIO);
3101 hso_kick_transmit(dev2ser(serial_table[i]));
3102 if (result)
3103 goto out;
3104 }
3105 }
3106 }
3107
3108 /* Start all network ports */
3109 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3110 if (network_table[i] &&
3111 (network_table[i]->interface == iface)) {
3112 hso_net = dev2net(network_table[i]);
89930b7b
DJB		 3113 if (hso_net->flags & IFF_UP) {
3114 /* First transmit any lingering data,
3115 then restart the device. */
3116 if (hso_net->skb_tx_buf) {
3117 dev_dbg(&iface->dev,
3118 "Transmitting"
3119 " lingering data\n");
3120 hso_net_start_xmit(hso_net->skb_tx_buf,
3121 hso_net->net);
3122 hso_net->skb_tx_buf = NULL;
3123 }
3124 result = hso_start_net_device(network_table[i]);
3125 if (result)
3126 goto out;
72dc1c09 3127 }
72dc1c09
GKH		 3128 }
3129 }
3130
3131out:
3132 return result;
3133}
3134
3135static void hso_serial_ref_free(struct kref *ref)
3136{
3137 struct hso_device *hso_dev = container_of(ref, struct hso_device, ref);
3138
3139 hso_free_serial_device(hso_dev);
3140}
3141
3142static void hso_free_interface(struct usb_interface *interface)
3143{
3144 struct hso_serial *hso_dev;
e136e303 3145 struct tty_struct *tty;
72dc1c09
GKH		 3146 int i;
3147
3148 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
8e95a202
JP		 3149 if (serial_table[i] &&
3150 (serial_table[i]->interface == interface)) {
72dc1c09 3151 hso_dev = dev2ser(serial_table[i]);
e136e303
AC		 3152 spin_lock_irq(&hso_dev->serial_lock);
3153 tty = tty_kref_get(hso_dev->tty);
3154 spin_unlock_irq(&hso_dev->serial_lock);
3155 if (tty)
3156 tty_hangup(tty);
ab153d84 3157 mutex_lock(&hso_dev->parent->mutex);
e136e303 3158 tty_kref_put(tty);
72dc1c09 3159 hso_dev->parent->usb_gone = 1;
ab153d84
DM		 3160 mutex_unlock(&hso_dev->parent->mutex);
3161 kref_put(&serial_table[i]->ref, hso_serial_ref_free);
72dc1c09
GKH		 3162 }
3163 }
3164
3165 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
8e95a202
JP		 3166 if (network_table[i] &&
3167 (network_table[i]->interface == interface)) {
72dc1c09
GKH		 3168 struct rfkill *rfk = dev2net(network_table[i])->rfkill;
3169 /* hso_stop_net_device doesn't stop the net queue since
3170 * traffic needs to start it again when suspended */
3171 netif_stop_queue(dev2net(network_table[i])->net);
3172 hso_stop_net_device(network_table[i]);
3173 cancel_work_sync(&network_table[i]->async_put_intf);
3174 cancel_work_sync(&network_table[i]->async_get_intf);
19d337df 3175 if (rfk) {
72dc1c09 3176 rfkill_unregister(rfk);
19d337df
JB		 3177 rfkill_destroy(rfk);
3178 }
72dc1c09
GKH		 3179 hso_free_net_device(network_table[i]);
3180 }
3181 }
3182}
3183
3184/* Helper functions */
3185
3186/* Get the endpoint ! */
3187static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
3188 int type, int dir)
3189{
3190 int i;
3191 struct usb_host_interface *iface = intf->cur_altsetting;
3192 struct usb_endpoint_descriptor *endp;
3193
3194 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3195 endp = &iface->endpoint[i].desc;
3196 if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) &&
f201a8a4 3197 (usb_endpoint_type(endp) == type))
72dc1c09
GKH		 3198 return endp;
3199 }
3200
3201 return NULL;
3202}
3203
3204/* Get the byte that describes which ports are enabled */
3205static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports)
3206{
3207 int i;
3208 struct usb_host_interface *iface = intf->cur_altsetting;
3209
3210 if (iface->extralen == 3) {
3211 *ports = iface->extra[2];
3212 return 0;
3213 }
3214
3215 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3216 if (iface->endpoint[i].extralen == 3) {
3217 *ports = iface->endpoint[i].extra[2];
3218 return 0;
3219 }
3220 }
3221
3222 return -1;
3223}
3224
3225/* interrupt urb needs to be submitted, used for serial read of muxed port */
3226static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int,
3227 struct usb_device *usb, gfp_t gfp)
3228{
3229 int result;
3230
3231 usb_fill_int_urb(shared_int->shared_intr_urb, usb,
3232 usb_rcvintpipe(usb,
3233 shared_int->intr_endp->bEndpointAddress & 0x7F),
3234 shared_int->shared_intr_buf,
3235 shared_int->intr_endp->wMaxPacketSize,
3236 intr_callback, shared_int,
3237 shared_int->intr_endp->bInterval);
3238
3239 result = usb_submit_urb(shared_int->shared_intr_urb, gfp);
3240 if (result)
3241 dev_warn(&usb->dev, "%s failed mux_intr_urb %d", __func__,
3242 result);
3243
3244 return result;
3245}
3246
3247/* operations setup of the serial interface */
6c59f569 3248static const struct tty_operations hso_serial_ops = {
72dc1c09
GKH		 3249 .open = hso_serial_open,
3250 .close = hso_serial_close,
3251 .write = hso_serial_write,
3252 .write_room = hso_serial_write_room,
542f5482 3253 .ioctl = hso_serial_ioctl,
72dc1c09
GKH		 3254 .set_termios = hso_serial_set_termios,
3255 .chars_in_buffer = hso_serial_chars_in_buffer,
3256 .tiocmget = hso_serial_tiocmget,
3257 .tiocmset = hso_serial_tiocmset,
8ef5ba63 3258 .unthrottle = hso_unthrottle
72dc1c09
GKH		 3259};
3260
3261static struct usb_driver hso_driver = {
3262 .name = driver_name,
3263 .probe = hso_probe,
3264 .disconnect = hso_disconnect,
3265 .id_table = hso_ids,
3266 .suspend = hso_suspend,
3267 .resume = hso_resume,
9c8f92ae 3268 .reset_resume = hso_resume,
72dc1c09
GKH		 3269 .supports_autosuspend = 1,
3270};
3271
3272static int __init hso_init(void)
3273{
3274 int i;
3275 int result;
3276
3277 /* put it in the log */
3278 printk(KERN_INFO "hso: %s\n", version);
3279
3280 /* Initialise the serial table semaphore and table */
3281 spin_lock_init(&serial_table_lock);
3282 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++)
3283 serial_table[i] = NULL;
3284
3285 /* allocate our driver using the proper amount of supported minors */
3286 tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS);
3287 if (!tty_drv)
3288 return -ENOMEM;
3289
3290 /* fill in all needed values */
3291 tty_drv->magic = TTY_DRIVER_MAGIC;
3292 tty_drv->owner = THIS_MODULE;
3293 tty_drv->driver_name = driver_name;
3294 tty_drv->name = tty_filename;
3295
3296 /* if major number is provided as parameter, use that one */
3297 if (tty_major)
3298 tty_drv->major = tty_major;
3299
3300 tty_drv->minor_start = 0;
3301 tty_drv->num = HSO_SERIAL_TTY_MINORS;
3302 tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
3303 tty_drv->subtype = SERIAL_TYPE_NORMAL;
3304 tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
3305 tty_drv->init_termios = tty_std_termios;
ac9720c3 3306 hso_init_termios(&tty_drv->init_termios);
72dc1c09
GKH		 3307 tty_set_operations(tty_drv, &hso_serial_ops);
3308
3309 /* register the tty driver */
3310 result = tty_register_driver(tty_drv);
3311 if (result) {
3312 printk(KERN_ERR "%s - tty_register_driver failed(%d)\n",
3313 __func__, result);
3314 return result;
3315 }
3316
3317 /* register this module as an usb driver */
3318 result = usb_register(&hso_driver);
3319 if (result) {
3320 printk(KERN_ERR "Could not register hso driver? error: %d\n",
3321 result);
3322 /* cleanup serial interface */
3323 tty_unregister_driver(tty_drv);
3324 return result;
3325 }
3326
3327 /* done */
3328 return 0;
3329}
3330
3331static void __exit hso_exit(void)
3332{
3333 printk(KERN_INFO "hso: unloaded\n");
3334
3335 tty_unregister_driver(tty_drv);
3336 /* deregister the usb driver */
3337 usb_deregister(&hso_driver);
3338}
3339
3340/* Module definitions */
3341module_init(hso_init);
3342module_exit(hso_exit);
3343
3344MODULE_AUTHOR(MOD_AUTHOR);
3345MODULE_DESCRIPTION(MOD_DESCRIPTION);
3346MODULE_LICENSE(MOD_LICENSE);
3347MODULE_INFO(Version, DRIVER_VERSION);
3348
3349/* change the debug level (eg: insmod hso.ko debug=0x04) */
3350MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
3351module_param(debug, int, S_IRUGO | S_IWUSR);
3352
3353/* set the major tty number (eg: insmod hso.ko tty_major=245) */
3354MODULE_PARM_DESC(tty_major, "Set the major tty number");
3355module_param(tty_major, int, S_IRUGO | S_IWUSR);
3356
3357/* disable network interface (eg: insmod hso.ko disable_net=1) */
3358MODULE_PARM_DESC(disable_net, "Disable the network interface");
3359module_param(disable_net, int, S_IRUGO | S_IWUSR);
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