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hso: Add Vendor/Product ID's for new devices
[net-next-2.6.git] / drivers / net / usb / hso.c
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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 463 {USB_DEVICE(0x0af0, 0x7701)},
ec157937 464 {USB_DEVICE(0x0af0, 0x7706)},
bab04c3a
DJB		 465 {USB_DEVICE(0x0af0, 0x7801)},
466 {USB_DEVICE(0x0af0, 0x7901)},
ec157937
JD		 467 {USB_DEVICE(0x0af0, 0x7A01)},
468 {USB_DEVICE(0x0af0, 0x7A05)},
9961d842
JD		 469 {USB_DEVICE(0x0af0, 0x8200)},
470 {USB_DEVICE(0x0af0, 0x8201)},
ec157937
JD		 471 {USB_DEVICE(0x0af0, 0x8300)},
472 {USB_DEVICE(0x0af0, 0x8302)},
473 {USB_DEVICE(0x0af0, 0x8304)},
474 {USB_DEVICE(0x0af0, 0x8400)},
9961d842 475 {USB_DEVICE(0x0af0, 0xd035)},
67dd8246 476 {USB_DEVICE(0x0af0, 0xd055)},
9961d842
JD		 477 {USB_DEVICE(0x0af0, 0xd155)},
478 {USB_DEVICE(0x0af0, 0xd255)},
479 {USB_DEVICE(0x0af0, 0xd057)},
480 {USB_DEVICE(0x0af0, 0xd157)},
481 {USB_DEVICE(0x0af0, 0xd257)},
482 {USB_DEVICE(0x0af0, 0xd357)},
ec157937
JD		 483 {USB_DEVICE(0x0af0, 0xd058)},
484 {USB_DEVICE(0x0af0, 0xc100)},
72dc1c09
GKH		 485 {}
486};
487MODULE_DEVICE_TABLE(usb, hso_ids);
488
489/* Sysfs attribute */
490static ssize_t hso_sysfs_show_porttype(struct device *dev,
491 struct device_attribute *attr,
492 char *buf)
493{
1aec5bdf 494 struct hso_device *hso_dev = dev_get_drvdata(dev);
72dc1c09
GKH		 495 char *port_name;
496
497 if (!hso_dev)
498 return 0;
499
500 switch (hso_dev->port_spec & HSO_PORT_MASK) {
501 case HSO_PORT_CONTROL:
502 port_name = "Control";
503 break;
504 case HSO_PORT_APP:
505 port_name = "Application";
506 break;
507 case HSO_PORT_APP2:
508 port_name = "Application2";
509 break;
510 case HSO_PORT_GPS:
511 port_name = "GPS";
512 break;
513 case HSO_PORT_GPS_CONTROL:
514 port_name = "GPS Control";
515 break;
516 case HSO_PORT_PCSC:
517 port_name = "PCSC";
518 break;
519 case HSO_PORT_DIAG:
520 port_name = "Diagnostic";
521 break;
522 case HSO_PORT_DIAG2:
523 port_name = "Diagnostic2";
524 break;
525 case HSO_PORT_MODEM:
526 port_name = "Modem";
527 break;
528 case HSO_PORT_NETWORK:
529 port_name = "Network";
530 break;
531 default:
532 port_name = "Unknown";
533 break;
534 }
535
536 return sprintf(buf, "%s\n", port_name);
537}
538static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL);
539
8ef5ba63
DJB		 540static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb)
541{
542 int idx;
543
544 for (idx = 0; idx < serial->num_rx_urbs; idx++)
545 if (serial->rx_urb[idx] == urb)
546 return idx;
547 dev_err(serial->parent->dev, "hso_urb_to_index failed\n");
548 return -1;
549}
550
72dc1c09
GKH		 551/* converts mux value to a port spec value */
552static u32 hso_mux_to_port(int mux)
553{
554 u32 result;
555
556 switch (mux) {
557 case 0x1:
558 result = HSO_PORT_CONTROL;
559 break;
560 case 0x2:
561 result = HSO_PORT_APP;
562 break;
563 case 0x4:
564 result = HSO_PORT_PCSC;
565 break;
566 case 0x8:
567 result = HSO_PORT_GPS;
568 break;
569 case 0x10:
570 result = HSO_PORT_APP2;
571 break;
572 default:
573 result = HSO_PORT_NO_PORT;
574 }
575 return result;
576}
577
578/* converts port spec value to a mux value */
579static u32 hso_port_to_mux(int port)
580{
581 u32 result;
582
583 switch (port & HSO_PORT_MASK) {
584 case HSO_PORT_CONTROL:
585 result = 0x0;
586 break;
587 case HSO_PORT_APP:
588 result = 0x1;
589 break;
590 case HSO_PORT_PCSC:
591 result = 0x2;
592 break;
593 case HSO_PORT_GPS:
594 result = 0x3;
595 break;
596 case HSO_PORT_APP2:
597 result = 0x4;
598 break;
599 default:
600 result = 0x0;
601 }
602 return result;
603}
604
605static struct hso_serial *get_serial_by_shared_int_and_type(
606 struct hso_shared_int *shared_int,
607 int mux)
608{
609 int i, port;
610
611 port = hso_mux_to_port(mux);
612
613 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
8e95a202
JP		 614 if (serial_table[i] &&
615 (dev2ser(serial_table[i])->shared_int == shared_int) &&
616 ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) {
72dc1c09
GKH		 617 return dev2ser(serial_table[i]);
618 }
619 }
620
621 return NULL;
622}
623
624static struct hso_serial *get_serial_by_index(unsigned index)
625{
0235f641 626 struct hso_serial *serial = NULL;
72dc1c09
GKH		 627 unsigned long flags;
628
72dc1c09 629 spin_lock_irqsave(&serial_table_lock, flags);
0235f641
GKH		 630 if (serial_table[index])
631 serial = dev2ser(serial_table[index]);
72dc1c09
GKH		 632 spin_unlock_irqrestore(&serial_table_lock, flags);
633
634 return serial;
635}
636
637static int get_free_serial_index(void)
638{
639 int index;
640 unsigned long flags;
641
642 spin_lock_irqsave(&serial_table_lock, flags);
643 for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) {
644 if (serial_table[index] == NULL) {
645 spin_unlock_irqrestore(&serial_table_lock, flags);
646 return index;
647 }
648 }
649 spin_unlock_irqrestore(&serial_table_lock, flags);
650
651 printk(KERN_ERR "%s: no free serial devices in table\n", __func__);
652 return -1;
653}
654
655static void set_serial_by_index(unsigned index, struct hso_serial *serial)
656{
657 unsigned long flags;
0235f641 658
72dc1c09
GKH		 659 spin_lock_irqsave(&serial_table_lock, flags);
660 if (serial)
661 serial_table[index] = serial->parent;
662 else
663 serial_table[index] = NULL;
664 spin_unlock_irqrestore(&serial_table_lock, flags);
665}
666
0235f641 667/* log a meaningful explanation of an USB status */
72dc1c09
GKH		 668static void log_usb_status(int status, const char *function)
669{
670 char *explanation;
671
672 switch (status) {
673 case -ENODEV:
674 explanation = "no device";
675 break;
676 case -ENOENT:
677 explanation = "endpoint not enabled";
678 break;
679 case -EPIPE:
680 explanation = "endpoint stalled";
681 break;
682 case -ENOSPC:
683 explanation = "not enough bandwidth";
684 break;
685 case -ESHUTDOWN:
686 explanation = "device disabled";
687 break;
688 case -EHOSTUNREACH:
689 explanation = "device suspended";
690 break;
691 case -EINVAL:
692 case -EAGAIN:
693 case -EFBIG:
694 case -EMSGSIZE:
695 explanation = "internal error";
696 break;
697 default:
698 explanation = "unknown status";
699 break;
700 }
701 D1("%s: received USB status - %s (%d)", function, explanation, status);
702}
703
704/* Network interface functions */
705
706/* called when net interface is brought up by ifconfig */
707static int hso_net_open(struct net_device *net)
708{
709 struct hso_net *odev = netdev_priv(net);
710 unsigned long flags = 0;
711
712 if (!odev) {
713 dev_err(&net->dev, "No net device !\n");
714 return -ENODEV;
715 }
716
717 odev->skb_tx_buf = NULL;
718
719 /* setup environment */
720 spin_lock_irqsave(&odev->net_lock, flags);
721 odev->rx_parse_state = WAIT_IP;
722 odev->rx_buf_size = 0;
723 odev->rx_buf_missing = sizeof(struct iphdr);
724 spin_unlock_irqrestore(&odev->net_lock, flags);
725
72dc1c09
GKH		 726 /* We are up and running. */
727 set_bit(HSO_NET_RUNNING, &odev->flags);
889bd9b6 728 hso_start_net_device(odev->parent);
72dc1c09
GKH		 729
730 /* Tell the kernel we are ready to start receiving from it */
731 netif_start_queue(net);
732
733 return 0;
734}
735
736/* called when interface is brought down by ifconfig */
737static int hso_net_close(struct net_device *net)
738{
739 struct hso_net *odev = netdev_priv(net);
740
741 /* we don't need the queue anymore */
742 netif_stop_queue(net);
743 /* no longer running */
744 clear_bit(HSO_NET_RUNNING, &odev->flags);
745
746 hso_stop_net_device(odev->parent);
747
748 /* done */
749 return 0;
750}
751
752/* USB tells is xmit done, we should start the netqueue again */
753static void write_bulk_callback(struct urb *urb)
754{
755 struct hso_net *odev = urb->context;
756 int status = urb->status;
757
758 /* Sanity check */
759 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
760 dev_err(&urb->dev->dev, "%s: device not running\n", __func__);
761 return;
762 }
763
764 /* Do we still have a valid kernel network device? */
765 if (!netif_device_present(odev->net)) {
766 dev_err(&urb->dev->dev, "%s: net device not present\n",
767 __func__);
768 return;
769 }
770
771 /* log status, but don't act on it, we don't need to resubmit anything
772 * anyhow */
773 if (status)
774 log_usb_status(status, __func__);
775
776 hso_put_activity(odev->parent);
777
778 /* Tell the network interface we are ready for another frame */
779 netif_wake_queue(odev->net);
780}
781
782/* called by kernel when we need to transmit a packet */
25a79c41
SH		 783static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb,
784 struct net_device *net)
72dc1c09
GKH		 785{
786 struct hso_net *odev = netdev_priv(net);
787 int result;
788
789 /* Tell the kernel, "No more frames 'til we are done with this one." */
790 netif_stop_queue(net);
791 if (hso_get_activity(odev->parent) == -EAGAIN) {
792 odev->skb_tx_buf = skb;
6ed10654 793 return NETDEV_TX_OK;
72dc1c09
GKH		 794 }
795
796 /* log if asked */
797 DUMP1(skb->data, skb->len);
798 /* Copy it from kernel memory to OUR memory */
799 memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len);
800 D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE);
801
802 /* Fill in the URB for shipping it out. */
803 usb_fill_bulk_urb(odev->mux_bulk_tx_urb,
804 odev->parent->usb,
805 usb_sndbulkpipe(odev->parent->usb,
806 odev->out_endp->
807 bEndpointAddress & 0x7F),
808 odev->mux_bulk_tx_buf, skb->len, write_bulk_callback,
809 odev);
810
811 /* Deal with the Zero Length packet problem, I hope */
812 odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET;
813
814 /* Send the URB on its merry way. */
815 result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC);
816 if (result) {
817 dev_warn(&odev->parent->interface->dev,
818 "failed mux_bulk_tx_urb %d", result);
819 net->stats.tx_errors++;
820 netif_start_queue(net);
821 } else {
822 net->stats.tx_packets++;
823 net->stats.tx_bytes += skb->len;
824 /* And tell the kernel when the last transmit started. */
825 net->trans_start = jiffies;
826 }
827 dev_kfree_skb(skb);
828 /* we're done */
5b2c4b97 829 return NETDEV_TX_OK;
72dc1c09
GKH		 830}
831
832static void hso_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
833{
834 struct hso_net *odev = netdev_priv(net);
835
836 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
837 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
838 usb_make_path(odev->parent->usb, info->bus_info, sizeof info->bus_info);
839}
840
0fc0b732 841static const struct ethtool_ops ops = {
72dc1c09
GKH		 842 .get_drvinfo = hso_get_drvinfo,
843 .get_link = ethtool_op_get_link
844};
845
846/* called when a packet did not ack after watchdogtimeout */
847static void hso_net_tx_timeout(struct net_device *net)
848{
849 struct hso_net *odev = netdev_priv(net);
850
851 if (!odev)
852 return;
853
854 /* Tell syslog we are hosed. */
855 dev_warn(&net->dev, "Tx timed out.\n");
856
857 /* Tear the waiting frame off the list */
8e95a202
JP		 858 if (odev->mux_bulk_tx_urb &&
859 (odev->mux_bulk_tx_urb->status == -EINPROGRESS))
72dc1c09
GKH		 860 usb_unlink_urb(odev->mux_bulk_tx_urb);
861
862 /* Update statistics */
863 net->stats.tx_errors++;
864}
865
866/* make a real packet from the received USB buffer */
867static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt,
868 unsigned int count, unsigned char is_eop)
869{
870 unsigned short temp_bytes;
871 unsigned short buffer_offset = 0;
872 unsigned short frame_len;
873 unsigned char *tmp_rx_buf;
874
875 /* log if needed */
876 D1("Rx %d bytes", count);
877 DUMP(ip_pkt, min(128, (int)count));
878
879 while (count) {
880 switch (odev->rx_parse_state) {
881 case WAIT_IP:
882 /* waiting for IP header. */
883 /* wanted bytes - size of ip header */
884 temp_bytes =
885 (count <
886 odev->rx_buf_missing) ? count : odev->
887 rx_buf_missing;
888
889 memcpy(((unsigned char *)(&odev->rx_ip_hdr)) +
890 odev->rx_buf_size, ip_pkt + buffer_offset,
891 temp_bytes);
892
893 odev->rx_buf_size += temp_bytes;
894 buffer_offset += temp_bytes;
895 odev->rx_buf_missing -= temp_bytes;
896 count -= temp_bytes;
897
898 if (!odev->rx_buf_missing) {
899 /* header is complete allocate an sk_buffer and
900 * continue to WAIT_DATA */
901 frame_len = ntohs(odev->rx_ip_hdr.tot_len);
902
903 if ((frame_len > DEFAULT_MRU) ||
904 (frame_len < sizeof(struct iphdr))) {
905 dev_err(&odev->net->dev,
906 "Invalid frame (%d) length\n",
907 frame_len);
908 odev->rx_parse_state = WAIT_SYNC;
909 continue;
910 }
911 /* Allocate an sk_buff */
d65a68a8
PZ		 912 odev->skb_rx_buf = netdev_alloc_skb(odev->net,
913 frame_len);
72dc1c09
GKH		 914 if (!odev->skb_rx_buf) {
915 /* We got no receive buffer. */
916 D1("could not allocate memory");
917 odev->rx_parse_state = WAIT_SYNC;
918 return;
919 }
72dc1c09
GKH		 920
921 /* Copy what we got so far. make room for iphdr
922 * after tail. */
923 tmp_rx_buf =
924 skb_put(odev->skb_rx_buf,
925 sizeof(struct iphdr));
926 memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr),
927 sizeof(struct iphdr));
928
929 /* ETH_HLEN */
930 odev->rx_buf_size = sizeof(struct iphdr);
931
932 /* Filip actually use .tot_len */
933 odev->rx_buf_missing =
934 frame_len - sizeof(struct iphdr);
935 odev->rx_parse_state = WAIT_DATA;
936 }
937 break;
938
939 case WAIT_DATA:
940 temp_bytes = (count < odev->rx_buf_missing)
941 ? count : odev->rx_buf_missing;
942
943 /* Copy the rest of the bytes that are left in the
944 * buffer into the waiting sk_buf. */
945 /* Make room for temp_bytes after tail. */
946 tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes);
947 memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes);
948
949 odev->rx_buf_missing -= temp_bytes;
950 count -= temp_bytes;
951 buffer_offset += temp_bytes;
952 odev->rx_buf_size += temp_bytes;
953 if (!odev->rx_buf_missing) {
954 /* Packet is complete. Inject into stack. */
955 /* We have IP packet here */
09640e63 956 odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP);
72dc1c09
GKH		 957 /* don't check it */
958 odev->skb_rx_buf->ip_summed =
959 CHECKSUM_UNNECESSARY;
960
961 skb_reset_mac_header(odev->skb_rx_buf);
962
963 /* Ship it off to the kernel */
964 netif_rx(odev->skb_rx_buf);
965 /* No longer our buffer. */
966 odev->skb_rx_buf = NULL;
967
968 /* update out statistics */
969 odev->net->stats.rx_packets++;
970
971 odev->net->stats.rx_bytes += odev->rx_buf_size;
972
973 odev->rx_buf_size = 0;
974 odev->rx_buf_missing = sizeof(struct iphdr);
975 odev->rx_parse_state = WAIT_IP;
976 }
977 break;
978
979 case WAIT_SYNC:
980 D1(" W_S");
981 count = 0;
982 break;
983 default:
984 D1(" ");
985 count--;
986 break;
987 }
988 }
989
990 /* Recovery mechanism for WAIT_SYNC state. */
991 if (is_eop) {
992 if (odev->rx_parse_state == WAIT_SYNC) {
993 odev->rx_parse_state = WAIT_IP;
994 odev->rx_buf_size = 0;
995 odev->rx_buf_missing = sizeof(struct iphdr);
996 }
997 }
998}
999
1000/* Moving data from usb to kernel (in interrupt state) */
1001static void read_bulk_callback(struct urb *urb)
1002{
1003 struct hso_net *odev = urb->context;
1004 struct net_device *net;
1005 int result;
1006 int status = urb->status;
1007
1008 /* is al ok? (Filip: Who's Al ?) */
1009 if (status) {
1010 log_usb_status(status, __func__);
1011 return;
1012 }
1013
1014 /* Sanity check */
1015 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
1016 D1("BULK IN callback but driver is not active!");
1017 return;
1018 }
1019 usb_mark_last_busy(urb->dev);
1020
1021 net = odev->net;
1022
1023 if (!netif_device_present(net)) {
1024 /* Somebody killed our network interface... */
1025 return;
1026 }
1027
1028 if (odev->parent->port_spec & HSO_INFO_CRC_BUG) {
1029 u32 rest;
1030 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1031 rest = urb->actual_length % odev->in_endp->wMaxPacketSize;
8e95a202
JP		 1032 if (((rest == 5) || (rest == 6)) &&
1033 !memcmp(((u8 *) urb->transfer_buffer) +
1034 urb->actual_length - 4, crc_check, 4)) {
72dc1c09
GKH		 1035 urb->actual_length -= 4;
1036 }
1037 }
1038
1039 /* do we even have a packet? */
1040 if (urb->actual_length) {
1041 /* Handle the IP stream, add header and push it onto network
1042 * stack if the packet is complete. */
1043 spin_lock(&odev->net_lock);
1044 packetizeRx(odev, urb->transfer_buffer, urb->actual_length,
1045 (urb->transfer_buffer_length >
1046 urb->actual_length) ? 1 : 0);
1047 spin_unlock(&odev->net_lock);
1048 }
1049
1050 /* We are done with this URB, resubmit it. Prep the USB to wait for
1051 * another frame. Reuse same as received. */
1052 usb_fill_bulk_urb(urb,
1053 odev->parent->usb,
1054 usb_rcvbulkpipe(odev->parent->usb,
1055 odev->in_endp->
1056 bEndpointAddress & 0x7F),
1057 urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE,
1058 read_bulk_callback, odev);
1059
1060 /* Give this to the USB subsystem so it can tell us when more data
1061 * arrives. */
1062 result = usb_submit_urb(urb, GFP_ATOMIC);
1063 if (result)
1064 dev_warn(&odev->parent->interface->dev,
1065 "%s failed submit mux_bulk_rx_urb %d", __func__,
1066 result);
1067}
1068
1069/* Serial driver functions */
1070
ac9720c3 1071static void hso_init_termios(struct ktermios *termios)
72dc1c09 1072{
72dc1c09
GKH		 1073 /*
1074 * The default requirements for this device are:
1075 */
72dc1c09
GKH		 1076 termios->c_iflag &=
1077 ~(IGNBRK /* disable ignore break */
1078 | BRKINT /* disable break causes interrupt */
1079 | PARMRK /* disable mark parity errors */
1080 | ISTRIP /* disable clear high bit of input characters */
1081 | INLCR /* disable translate NL to CR */
1082 | IGNCR /* disable ignore CR */
1083 | ICRNL /* disable translate CR to NL */
1084 | IXON); /* disable enable XON/XOFF flow control */
1085
1086 /* disable postprocess output characters */
1087 termios->c_oflag &= ~OPOST;
1088
1089 termios->c_lflag &=
1090 ~(ECHO /* disable echo input characters */
1091 | ECHONL /* disable echo new line */
1092 | ICANON /* disable erase, kill, werase, and rprnt
1093 special characters */
1094 | ISIG /* disable interrupt, quit, and suspend special
1095 characters */
1096 | IEXTEN); /* disable non-POSIX special characters */
1097
1098 termios->c_cflag &=
1099 ~(CSIZE /* no size */
1100 | PARENB /* disable parity bit */
1101 | CBAUD /* clear current baud rate */
1102 | CBAUDEX); /* clear current buad rate */
1103
1104 termios->c_cflag |= CS8; /* character size 8 bits */
1105
1106 /* baud rate 115200 */
ac9720c3
AC		 1107 tty_termios_encode_baud_rate(termios, 115200, 115200);
1108}
1109
1110static void _hso_serial_set_termios(struct tty_struct *tty,
1111 struct ktermios *old)
1112{
1113 struct hso_serial *serial = get_serial_by_tty(tty);
1114 struct ktermios *termios;
1115
1116 if (!serial) {
1117 printk(KERN_ERR "%s: no tty structures", __func__);
1118 return;
1119 }
1120
1121 D4("port %d", serial->minor);
72dc1c09
GKH		 1122
1123 /*
ac9720c3 1124 * Fix up unsupported bits
72dc1c09 1125 */
ac9720c3
AC		 1126 termios = tty->termios;
1127 termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */
1128
1129 termios->c_cflag &=
1130 ~(CSIZE /* no size */
1131 | PARENB /* disable parity bit */
1132 | CBAUD /* clear current baud rate */
1133 | CBAUDEX); /* clear current buad rate */
1134
1135 termios->c_cflag |= CS8; /* character size 8 bits */
1136
1137 /* baud rate 115200 */
1138 tty_encode_baud_rate(tty, 115200, 115200);
72dc1c09
GKH		 1139}
1140
8ef5ba63
DJB		 1141static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb)
1142{
1143 int result;
1144#ifdef CONFIG_HSO_AUTOPM
1145 usb_mark_last_busy(urb->dev);
1146#endif
1147 /* We are done with this URB, resubmit it. Prep the USB to wait for
1148 * another frame */
1149 usb_fill_bulk_urb(urb, serial->parent->usb,
1150 usb_rcvbulkpipe(serial->parent->usb,
1151 serial->in_endp->
1152 bEndpointAddress & 0x7F),
1153 urb->transfer_buffer, serial->rx_data_length,
1154 hso_std_serial_read_bulk_callback, serial);
1155 /* Give this to the USB subsystem so it can tell us when more data
1156 * arrives. */
1157 result = usb_submit_urb(urb, GFP_ATOMIC);
1158 if (result) {
1159 dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n",
1160 __func__, result);
1161 }
1162}
1163
1164
1165
1166
1167static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial)
1168{
1169 int count;
1170 struct urb *curr_urb;
1171
1172 while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) {
1173 curr_urb = serial->rx_urb[serial->curr_rx_urb_idx];
1174 count = put_rxbuf_data(curr_urb, serial);
1175 if (count == -1)
1176 return;
1177 if (count == 0) {
1178 serial->curr_rx_urb_idx++;
1179 if (serial->curr_rx_urb_idx >= serial->num_rx_urbs)
1180 serial->curr_rx_urb_idx = 0;
1181 hso_resubmit_rx_bulk_urb(serial, curr_urb);
1182 }
1183 }
1184}
1185
1186static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
1187{
1188 int count = 0;
1189 struct urb *urb;
1190
1191 urb = serial->rx_urb[0];
1192 if (serial->open_count > 0) {
1193 count = put_rxbuf_data(urb, serial);
1194 if (count == -1)
1195 return;
1196 }
1197 /* Re issue a read as long as we receive data. */
1198
1199 if (count == 0 && ((urb->actual_length != 0) ||
1200 (serial->rx_state == RX_PENDING))) {
1201 serial->rx_state = RX_SENT;
1202 hso_mux_serial_read(serial);
1203 } else
1204 serial->rx_state = RX_IDLE;
1205}
1206
1207
1208/* read callback for Diag and CS port */
1209static void hso_std_serial_read_bulk_callback(struct urb *urb)
1210{
1211 struct hso_serial *serial = urb->context;
1212 int status = urb->status;
1213
1214 /* sanity check */
1215 if (!serial) {
1216 D1("serial == NULL");
1217 return;
1218 } else if (status) {
1219 log_usb_status(status, __func__);
1220 return;
1221 }
1222
1223 D4("\n--- Got serial_read_bulk callback %02x ---", status);
1224 D1("Actual length = %d\n", urb->actual_length);
1225 DUMP1(urb->transfer_buffer, urb->actual_length);
1226
1227 /* Anyone listening? */
1228 if (serial->open_count == 0)
1229 return;
1230
1231 if (status == 0) {
1232 if (serial->parent->port_spec & HSO_INFO_CRC_BUG) {
1233 u32 rest;
1234 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1235 rest =
1236 urb->actual_length %
1237 serial->in_endp->wMaxPacketSize;
8e95a202
JP		 1238 if (((rest == 5) || (rest == 6)) &&
1239 !memcmp(((u8 *) urb->transfer_buffer) +
1240 urb->actual_length - 4, crc_check, 4)) {
8ef5ba63
DJB		 1241 urb->actual_length -= 4;
1242 }
1243 }
1244 /* Valid data, handle RX data */
1245 spin_lock(&serial->serial_lock);
1246 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1;
1247 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1248 spin_unlock(&serial->serial_lock);
1249 } else if (status == -ENOENT || status == -ECONNRESET) {
1250 /* Unlinked - check for throttled port. */
1251 D2("Port %d, successfully unlinked urb", serial->minor);
1252 spin_lock(&serial->serial_lock);
1253 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
1254 hso_resubmit_rx_bulk_urb(serial, urb);
1255 spin_unlock(&serial->serial_lock);
1256 } else {
1257 D2("Port %d, status = %d for read urb", serial->minor, status);
1258 return;
1259 }
1260}
1261
1262/*
1263 * This needs to be a tasklet otherwise we will
1264 * end up recursively calling this function.
1265 */
0227abc9 1266static void hso_unthrottle_tasklet(struct hso_serial *serial)
8ef5ba63
DJB		 1267{
1268 unsigned long flags;
1269
1270 spin_lock_irqsave(&serial->serial_lock, flags);
1271 if ((serial->parent->port_spec & HSO_INTF_MUX))
1272 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
1273 else
1274 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1275 spin_unlock_irqrestore(&serial->serial_lock, flags);
1276}
1277
1278static void hso_unthrottle(struct tty_struct *tty)
1279{
1280 struct hso_serial *serial = get_serial_by_tty(tty);
1281
1282 tasklet_hi_schedule(&serial->unthrottle_tasklet);
1283}
1284
0227abc9 1285static void hso_unthrottle_workfunc(struct work_struct *work)
8ef5ba63
DJB		 1286{
1287 struct hso_serial *serial =
1288 container_of(work, struct hso_serial,
1289 retry_unthrottle_workqueue);
1290 hso_unthrottle_tasklet(serial);
1291}
1292
72dc1c09
GKH		 1293/* open the requested serial port */
1294static int hso_serial_open(struct tty_struct *tty, struct file *filp)
1295{
1296 struct hso_serial *serial = get_serial_by_index(tty->index);
ab153d84 1297 int result;
72dc1c09
GKH		 1298
1299 /* sanity check */
1300 if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) {
e136e303 1301 WARN_ON(1);
72dc1c09
GKH		 1302 tty->driver_data = NULL;
1303 D1("Failed to open port");
1304 return -ENODEV;
1305 }
1306
ab153d84 1307 mutex_lock(&serial->parent->mutex);
ab153d84
DM		 1308 result = usb_autopm_get_interface(serial->parent->interface);
1309 if (result < 0)
72dc1c09
GKH		 1310 goto err_out;
1311
1312 D1("Opening %d", serial->minor);
1313 kref_get(&serial->parent->ref);
1314
1315 /* setup */
e136e303 1316 spin_lock_irq(&serial->serial_lock);
72dc1c09 1317 tty->driver_data = serial;
fe41cbb1 1318 tty_kref_put(serial->tty);
e136e303
AC		 1319 serial->tty = tty_kref_get(tty);
1320 spin_unlock_irq(&serial->serial_lock);
72dc1c09 1321
2f9889a2
DM		 1322 /* check for port already opened, if not set the termios */
1323 serial->open_count++;
72dc1c09
GKH		 1324 if (serial->open_count == 1) {
1325 tty->low_latency = 1;
8ef5ba63 1326 serial->rx_state = RX_IDLE;
72dc1c09
GKH		 1327 /* Force default termio settings */
1328 _hso_serial_set_termios(tty, NULL);
8ef5ba63
DJB		 1329 tasklet_init(&serial->unthrottle_tasklet,
1330 (void (*)(unsigned long))hso_unthrottle_tasklet,
1331 (unsigned long)serial);
1332 INIT_WORK(&serial->retry_unthrottle_workqueue,
1333 hso_unthrottle_workfunc);
ab153d84
DM		 1334 result = hso_start_serial_device(serial->parent, GFP_KERNEL);
1335 if (result) {
72dc1c09
GKH		 1336 hso_stop_serial_device(serial->parent);
1337 serial->open_count--;
ab153d84 1338 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09
GKH		 1339 }
1340 } else {
1341 D1("Port was already open");
1342 }
1343
1344 usb_autopm_put_interface(serial->parent->interface);
1345
1346 /* done */
ab153d84 1347 if (result)
72dc1c09
GKH		 1348 hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0);
1349err_out:
ab153d84
DM		 1350 mutex_unlock(&serial->parent->mutex);
1351 return result;
72dc1c09
GKH		 1352}
1353
1354/* close the requested serial port */
1355static void hso_serial_close(struct tty_struct *tty, struct file *filp)
1356{
1357 struct hso_serial *serial = tty->driver_data;
1358 u8 usb_gone;
1359
1360 D1("Closing serial port");
1361
e136e303
AC		 1362 /* Open failed, no close cleanup required */
1363 if (serial == NULL)
1364 return;
1365
ab153d84 1366 mutex_lock(&serial->parent->mutex);
72dc1c09
GKH		 1367 usb_gone = serial->parent->usb_gone;
1368
1369 if (!usb_gone)
1370 usb_autopm_get_interface(serial->parent->interface);
1371
1372 /* reset the rts and dtr */
1373 /* do the actual close */
1374 serial->open_count--;
dcfcb256 1375
72dc1c09 1376 if (serial->open_count <= 0) {
72dc1c09 1377 serial->open_count = 0;
e136e303
AC		 1378 spin_lock_irq(&serial->serial_lock);
1379 if (serial->tty == tty) {
72dc1c09
GKH		 1380 serial->tty->driver_data = NULL;
1381 serial->tty = NULL;
e136e303 1382 tty_kref_put(tty);
72dc1c09 1383 }
e136e303 1384 spin_unlock_irq(&serial->serial_lock);
72dc1c09
GKH		 1385 if (!usb_gone)
1386 hso_stop_serial_device(serial->parent);
8ef5ba63
DJB		 1387 tasklet_kill(&serial->unthrottle_tasklet);
1388 cancel_work_sync(&serial->retry_unthrottle_workqueue);
72dc1c09 1389 }
8ef5ba63 1390
72dc1c09
GKH		 1391 if (!usb_gone)
1392 usb_autopm_put_interface(serial->parent->interface);
ab153d84
DM		 1393
1394 mutex_unlock(&serial->parent->mutex);
dcfcb256
AK		 1395
1396 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09
GKH		 1397}
1398
1399/* close the requested serial port */
1400static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf,
1401 int count)
1402{
1403 struct hso_serial *serial = get_serial_by_tty(tty);
1404 int space, tx_bytes;
1405 unsigned long flags;
1406
1407 /* sanity check */
1408 if (serial == NULL) {
1409 printk(KERN_ERR "%s: serial is NULL\n", __func__);
1410 return -ENODEV;
1411 }
1412
1413 spin_lock_irqsave(&serial->serial_lock, flags);
1414
1415 space = serial->tx_data_length - serial->tx_buffer_count;
1416 tx_bytes = (count < space) ? count : space;
1417
1418 if (!tx_bytes)
1419 goto out;
1420
1421 memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes);
1422 serial->tx_buffer_count += tx_bytes;
1423
1424out:
1425 spin_unlock_irqrestore(&serial->serial_lock, flags);
1426
1427 hso_kick_transmit(serial);
1428 /* done */
1429 return tx_bytes;
1430}
1431
1432/* how much room is there for writing */
1433static int hso_serial_write_room(struct tty_struct *tty)
1434{
1435 struct hso_serial *serial = get_serial_by_tty(tty);
1436 int room;
1437 unsigned long flags;
1438
1439 spin_lock_irqsave(&serial->serial_lock, flags);
1440 room = serial->tx_data_length - serial->tx_buffer_count;
1441 spin_unlock_irqrestore(&serial->serial_lock, flags);
1442
1443 /* return free room */
1444 return room;
1445}
1446
1447/* setup the term */
1448static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
1449{
1450 struct hso_serial *serial = get_serial_by_tty(tty);
1451 unsigned long flags;
1452
1453 if (old)
1454 D5("Termios called with: cflags new[%d] - old[%d]",
1455 tty->termios->c_cflag, old->c_cflag);
1456
1457 /* the actual setup */
1458 spin_lock_irqsave(&serial->serial_lock, flags);
1459 if (serial->open_count)
1460 _hso_serial_set_termios(tty, old);
1461 else
1462 tty->termios = old;
1463 spin_unlock_irqrestore(&serial->serial_lock, flags);
1464
1465 /* done */
1466 return;
1467}
1468
1469/* how many characters in the buffer */
1470static int hso_serial_chars_in_buffer(struct tty_struct *tty)
1471{
1472 struct hso_serial *serial = get_serial_by_tty(tty);
1473 int chars;
1474 unsigned long flags;
1475
1476 /* sanity check */
1477 if (serial == NULL)
1478 return 0;
1479
1480 spin_lock_irqsave(&serial->serial_lock, flags);
1481 chars = serial->tx_buffer_count;
1482 spin_unlock_irqrestore(&serial->serial_lock, flags);
1483
1484 return chars;
1485}
0227abc9
HE		 1486static int tiocmget_submit_urb(struct hso_serial *serial,
1487 struct hso_tiocmget *tiocmget,
1488 struct usb_device *usb)
542f5482
DJB		 1489{
1490 int result;
1491
1492 if (serial->parent->usb_gone)
1493 return -ENODEV;
1494 usb_fill_int_urb(tiocmget->urb, usb,
1495 usb_rcvintpipe(usb,
1496 tiocmget->endp->
1497 bEndpointAddress & 0x7F),
1498 &tiocmget->serial_state_notification,
1499 sizeof(struct hso_serial_state_notification),
1500 tiocmget_intr_callback, serial,
1501 tiocmget->endp->bInterval);
1502 result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC);
1503 if (result) {
1504 dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__,
1505 result);
1506 }
1507 return result;
1508
1509}
1510
1511static void tiocmget_intr_callback(struct urb *urb)
1512{
1513 struct hso_serial *serial = urb->context;
1514 struct hso_tiocmget *tiocmget;
1515 int status = urb->status;
1516 u16 UART_state_bitmap, prev_UART_state_bitmap;
1517 struct uart_icount *icount;
1518 struct hso_serial_state_notification *serial_state_notification;
1519 struct usb_device *usb;
1520
1521 /* Sanity checks */
1522 if (!serial)
1523 return;
1524 if (status) {
1525 log_usb_status(status, __func__);
1526 return;
1527 }
1528 tiocmget = serial->tiocmget;
1529 if (!tiocmget)
1530 return;
1531 usb = serial->parent->usb;
1532 serial_state_notification = &tiocmget->serial_state_notification;
1533 if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE ||
1534 serial_state_notification->bNotification != B_NOTIFICATION ||
1535 le16_to_cpu(serial_state_notification->wValue) != W_VALUE ||
1536 le16_to_cpu(serial_state_notification->wIndex) != W_INDEX ||
1537 le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) {
1538 dev_warn(&usb->dev,
1539 "hso received invalid serial state notification\n");
1540 DUMP(serial_state_notification,
9ce673d5 1541 sizeof(struct hso_serial_state_notification));
542f5482
DJB		 1542 } else {
1543
1544 UART_state_bitmap = le16_to_cpu(serial_state_notification->
1545 UART_state_bitmap);
1546 prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap;
1547 icount = &tiocmget->icount;
1548 spin_lock(&serial->serial_lock);
1549 if ((UART_state_bitmap & B_OVERRUN) !=
1550 (prev_UART_state_bitmap & B_OVERRUN))
1551 icount->parity++;
1552 if ((UART_state_bitmap & B_PARITY) !=
1553 (prev_UART_state_bitmap & B_PARITY))
1554 icount->parity++;
1555 if ((UART_state_bitmap & B_FRAMING) !=
1556 (prev_UART_state_bitmap & B_FRAMING))
1557 icount->frame++;
1558 if ((UART_state_bitmap & B_RING_SIGNAL) &&
1559 !(prev_UART_state_bitmap & B_RING_SIGNAL))
1560 icount->rng++;
1561 if ((UART_state_bitmap & B_BREAK) !=
1562 (prev_UART_state_bitmap & B_BREAK))
1563 icount->brk++;
1564 if ((UART_state_bitmap & B_TX_CARRIER) !=
1565 (prev_UART_state_bitmap & B_TX_CARRIER))
1566 icount->dsr++;
1567 if ((UART_state_bitmap & B_RX_CARRIER) !=
1568 (prev_UART_state_bitmap & B_RX_CARRIER))
1569 icount->dcd++;
1570 tiocmget->prev_UART_state_bitmap = UART_state_bitmap;
1571 spin_unlock(&serial->serial_lock);
1572 tiocmget->intr_completed = 1;
1573 wake_up_interruptible(&tiocmget->waitq);
1574 }
1575 memset(serial_state_notification, 0,
1576 sizeof(struct hso_serial_state_notification));
1577 tiocmget_submit_urb(serial,
1578 tiocmget,
1579 serial->parent->usb);
1580}
1581
1582/*
1583 * next few functions largely stolen from drivers/serial/serial_core.c
1584 */
1585/* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1586 * - mask passed in arg for lines of interest
1587 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1588 * Caller should use TIOCGICOUNT to see which one it was
1589 */
1590static int
1591hso_wait_modem_status(struct hso_serial *serial, unsigned long arg)
1592{
1593 DECLARE_WAITQUEUE(wait, current);
1594 struct uart_icount cprev, cnow;
1595 struct hso_tiocmget *tiocmget;
1596 int ret;
1597
1598 tiocmget = serial->tiocmget;
1599 if (!tiocmget)
1600 return -ENOENT;
1601 /*
1602 * note the counters on entry
1603 */
1604 spin_lock_irq(&serial->serial_lock);
1605 memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount));
1606 spin_unlock_irq(&serial->serial_lock);
1607 add_wait_queue(&tiocmget->waitq, &wait);
1608 for (;;) {
1609 spin_lock_irq(&serial->serial_lock);
1610 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1611 spin_unlock_irq(&serial->serial_lock);
1612 set_current_state(TASK_INTERRUPTIBLE);
1613 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1614 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1615 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) {
1616 ret = 0;
1617 break;
1618 }
1619 schedule();
1620 /* see if a signal did it */
1621 if (signal_pending(current)) {
1622 ret = -ERESTARTSYS;
1623 break;
1624 }
1625 cprev = cnow;
1626 }
1627 current->state = TASK_RUNNING;
1628 remove_wait_queue(&tiocmget->waitq, &wait);
1629
1630 return ret;
1631}
1632
1633/*
1634 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
1635 * Return: write counters to the user passed counter struct
1636 * NB: both 1->0 and 0->1 transitions are counted except for
1637 * RI where only 0->1 is counted.
1638 */
1639static int hso_get_count(struct hso_serial *serial,
1640 struct serial_icounter_struct __user *icnt)
1641{
1642 struct serial_icounter_struct icount;
1643 struct uart_icount cnow;
1644 struct hso_tiocmget *tiocmget = serial->tiocmget;
1645
1646 if (!tiocmget)
1647 return -ENOENT;
1648 spin_lock_irq(&serial->serial_lock);
1649 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1650 spin_unlock_irq(&serial->serial_lock);
1651
1652 icount.cts = cnow.cts;
1653 icount.dsr = cnow.dsr;
1654 icount.rng = cnow.rng;
1655 icount.dcd = cnow.dcd;
1656 icount.rx = cnow.rx;
1657 icount.tx = cnow.tx;
1658 icount.frame = cnow.frame;
1659 icount.overrun = cnow.overrun;
1660 icount.parity = cnow.parity;
1661 icount.brk = cnow.brk;
1662 icount.buf_overrun = cnow.buf_overrun;
1663
1664 return copy_to_user(icnt, &icount, sizeof(icount)) ? -EFAULT : 0;
1665}
1666
72dc1c09
GKH		 1667
1668static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file)
1669{
542f5482 1670 int retval;
72dc1c09 1671 struct hso_serial *serial = get_serial_by_tty(tty);
542f5482
DJB		 1672 struct hso_tiocmget *tiocmget;
1673 u16 UART_state_bitmap;
72dc1c09
GKH		 1674
1675 /* sanity check */
1676 if (!serial) {
1677 D1("no tty structures");
1678 return -EINVAL;
1679 }
542f5482
DJB		 1680 spin_lock_irq(&serial->serial_lock);
1681 retval = ((serial->rts_state) ? TIOCM_RTS : 0) |
72dc1c09 1682 ((serial->dtr_state) ? TIOCM_DTR : 0);
542f5482
DJB		 1683 tiocmget = serial->tiocmget;
1684 if (tiocmget) {
1685
1686 UART_state_bitmap = le16_to_cpu(
1687 tiocmget->prev_UART_state_bitmap);
1688 if (UART_state_bitmap & B_RING_SIGNAL)
1689 retval |= TIOCM_RNG;
1690 if (UART_state_bitmap & B_RX_CARRIER)
1691 retval |= TIOCM_CD;
1692 if (UART_state_bitmap & B_TX_CARRIER)
1693 retval |= TIOCM_DSR;
1694 }
1695 spin_unlock_irq(&serial->serial_lock);
1696 return retval;
72dc1c09
GKH		 1697}
1698
1699static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
1700 unsigned int set, unsigned int clear)
1701{
1702 int val = 0;
1703 unsigned long flags;
1704 int if_num;
1705 struct hso_serial *serial = get_serial_by_tty(tty);
1706
1707 /* sanity check */
1708 if (!serial) {
1709 D1("no tty structures");
1710 return -EINVAL;
1711 }
1712 if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber;
1713
1714 spin_lock_irqsave(&serial->serial_lock, flags);
1715 if (set & TIOCM_RTS)
1716 serial->rts_state = 1;
1717 if (set & TIOCM_DTR)
1718 serial->dtr_state = 1;
1719
1720 if (clear & TIOCM_RTS)
1721 serial->rts_state = 0;
1722 if (clear & TIOCM_DTR)
1723 serial->dtr_state = 0;
1724
1725 if (serial->dtr_state)
1726 val |= 0x01;
1727 if (serial->rts_state)
1728 val |= 0x02;
1729
1730 spin_unlock_irqrestore(&serial->serial_lock, flags);
1731
1732 return usb_control_msg(serial->parent->usb,
1733 usb_rcvctrlpipe(serial->parent->usb, 0), 0x22,
1734 0x21, val, if_num, NULL, 0,
1735 USB_CTRL_SET_TIMEOUT);
1736}
1737
542f5482
DJB		 1738static int hso_serial_ioctl(struct tty_struct *tty, struct file *file,
1739 unsigned int cmd, unsigned long arg)
1740{
1741 struct hso_serial *serial = get_serial_by_tty(tty);
1742 void __user *uarg = (void __user *)arg;
1743 int ret = 0;
1744 D4("IOCTL cmd: %d, arg: %ld", cmd, arg);
1745
1746 if (!serial)
1747 return -ENODEV;
1748 switch (cmd) {
1749 case TIOCMIWAIT:
1750 ret = hso_wait_modem_status(serial, arg);
1751 break;
1752
1753 case TIOCGICOUNT:
1754 ret = hso_get_count(serial, uarg);
1755 break;
1756 default:
1757 ret = -ENOIOCTLCMD;
1758 break;
1759 }
1760 return ret;
1761}
1762
1763
72dc1c09
GKH		 1764/* starts a transmit */
1765static void hso_kick_transmit(struct hso_serial *serial)
1766{
1767 u8 *temp;
1768 unsigned long flags;
1769 int res;
1770
1771 spin_lock_irqsave(&serial->serial_lock, flags);
1772 if (!serial->tx_buffer_count)
1773 goto out;
1774
1775 if (serial->tx_urb_used)
1776 goto out;
1777
1778 /* Wakeup USB interface if necessary */
1779 if (hso_get_activity(serial->parent) == -EAGAIN)
1780 goto out;
1781
1782 /* Switch pointers around to avoid memcpy */
1783 temp = serial->tx_buffer;
1784 serial->tx_buffer = serial->tx_data;
1785 serial->tx_data = temp;
1786 serial->tx_data_count = serial->tx_buffer_count;
1787 serial->tx_buffer_count = 0;
1788
1789 /* If temp is set, it means we switched buffers */
1790 if (temp && serial->write_data) {
1791 res = serial->write_data(serial);
1792 if (res >= 0)
1793 serial->tx_urb_used = 1;
1794 }
1795out:
1796 spin_unlock_irqrestore(&serial->serial_lock, flags);
1797}
1798
1799/* make a request (for reading and writing data to muxed serial port) */
1800static int mux_device_request(struct hso_serial *serial, u8 type, u16 port,
1801 struct urb *ctrl_urb,
1802 struct usb_ctrlrequest *ctrl_req,
1803 u8 *ctrl_urb_data, u32 size)
1804{
1805 int result;
1806 int pipe;
1807
1808 /* Sanity check */
1809 if (!serial || !ctrl_urb || !ctrl_req) {
1810 printk(KERN_ERR "%s: Wrong arguments\n", __func__);
1811 return -EINVAL;
1812 }
1813
1814 /* initialize */
1815 ctrl_req->wValue = 0;
b74f62c1
DJB		 1816 ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port));
1817 ctrl_req->wLength = cpu_to_le16(size);
72dc1c09
GKH		 1818
1819 if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) {
1820 /* Reading command */
1821 ctrl_req->bRequestType = USB_DIR_IN |
1822 USB_TYPE_OPTION_VENDOR |
1823 USB_RECIP_INTERFACE;
1824 ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
1825 pipe = usb_rcvctrlpipe(serial->parent->usb, 0);
1826 } else {
1827 /* Writing command */
1828 ctrl_req->bRequestType = USB_DIR_OUT |
1829 USB_TYPE_OPTION_VENDOR |
1830 USB_RECIP_INTERFACE;
1831 ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND;
1832 pipe = usb_sndctrlpipe(serial->parent->usb, 0);
1833 }
1834 /* syslog */
1835 D2("%s command (%02x) len: %d, port: %d",
1836 type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write",
1837 ctrl_req->bRequestType, ctrl_req->wLength, port);
1838
1839 /* Load ctrl urb */
1840 ctrl_urb->transfer_flags = 0;
1841 usb_fill_control_urb(ctrl_urb,
1842 serial->parent->usb,
1843 pipe,
1844 (u8 *) ctrl_req,
1845 ctrl_urb_data, size, ctrl_callback, serial);
1846 /* Send it on merry way */
1847 result = usb_submit_urb(ctrl_urb, GFP_ATOMIC);
1848 if (result) {
1849 dev_err(&ctrl_urb->dev->dev,
1850 "%s failed submit ctrl_urb %d type %d", __func__,
1851 result, type);
1852 return result;
1853 }
1854
1855 /* done */
1856 return size;
1857}
1858
1859/* called by intr_callback when read occurs */
1860static int hso_mux_serial_read(struct hso_serial *serial)
1861{
1862 if (!serial)
1863 return -EINVAL;
1864
1865 /* clean data */
1866 memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE);
1867 /* make the request */
1868
1869 if (serial->num_rx_urbs != 1) {
1870 dev_err(&serial->parent->interface->dev,
1871 "ERROR: mux'd reads with multiple buffers "
1872 "not possible\n");
1873 return 0;
1874 }
1875 return mux_device_request(serial,
1876 USB_CDC_GET_ENCAPSULATED_RESPONSE,
1877 serial->parent->port_spec & HSO_PORT_MASK,
1878 serial->rx_urb[0],
1879 &serial->ctrl_req_rx,
1880 serial->rx_data[0], serial->rx_data_length);
1881}
1882
1883/* used for muxed serial port callback (muxed serial read) */
1884static void intr_callback(struct urb *urb)
1885{
1886 struct hso_shared_int *shared_int = urb->context;
1887 struct hso_serial *serial;
1888 unsigned char *port_req;
1889 int status = urb->status;
1890 int i;
1891
1892 usb_mark_last_busy(urb->dev);
1893
1894 /* sanity check */
1895 if (!shared_int)
1896 return;
1897
1898 /* status check */
1899 if (status) {
1900 log_usb_status(status, __func__);
1901 return;
1902 }
1903 D4("\n--- Got intr callback 0x%02X ---", status);
1904
1905 /* what request? */
1906 port_req = urb->transfer_buffer;
1907 D4(" port_req = 0x%.2X\n", *port_req);
1908 /* loop over all muxed ports to find the one sending this */
1909 for (i = 0; i < 8; i++) {
1910 /* max 8 channels on MUX */
1911 if (*port_req & (1 << i)) {
1912 serial = get_serial_by_shared_int_and_type(shared_int,
1913 (1 << i));
1914 if (serial != NULL) {
1915 D1("Pending read interrupt on port %d\n", i);
8ef5ba63
DJB		 1916 spin_lock(&serial->serial_lock);
1917 if (serial->rx_state == RX_IDLE) {
72dc1c09
GKH		 1918 /* Setup and send a ctrl req read on
1919 * port i */
8ef5ba63
DJB		 1920 if (!serial->rx_urb_filled[0]) {
1921 serial->rx_state = RX_SENT;
1922 hso_mux_serial_read(serial);
1923 } else
1924 serial->rx_state = RX_PENDING;
1925
72dc1c09
GKH		 1926 } else {
1927 D1("Already pending a read on "
1928 "port %d\n", i);
1929 }
8ef5ba63 1930 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 1931 }
1932 }
1933 }
1934 /* Resubmit interrupt urb */
1935 hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC);
1936}
1937
1938/* called for writing to muxed serial port */
1939static int hso_mux_serial_write_data(struct hso_serial *serial)
1940{
1941 if (NULL == serial)
1942 return -EINVAL;
1943
1944 return mux_device_request(serial,
1945 USB_CDC_SEND_ENCAPSULATED_COMMAND,
1946 serial->parent->port_spec & HSO_PORT_MASK,
1947 serial->tx_urb,
1948 &serial->ctrl_req_tx,
1949 serial->tx_data, serial->tx_data_count);
1950}
1951
1952/* write callback for Diag and CS port */
1953static void hso_std_serial_write_bulk_callback(struct urb *urb)
1954{
1955 struct hso_serial *serial = urb->context;
1956 int status = urb->status;
e136e303 1957 struct tty_struct *tty;
72dc1c09
GKH		 1958
1959 /* sanity check */
1960 if (!serial) {
1961 D1("serial == NULL");
1962 return;
1963 }
1964
1965 spin_lock(&serial->serial_lock);
1966 serial->tx_urb_used = 0;
e136e303 1967 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 1968 spin_unlock(&serial->serial_lock);
1969 if (status) {
1970 log_usb_status(status, __func__);
e136e303 1971 tty_kref_put(tty);
72dc1c09
GKH		 1972 return;
1973 }
1974 hso_put_activity(serial->parent);
e136e303
AC		 1975 if (tty) {
1976 tty_wakeup(tty);
1977 tty_kref_put(tty);
1978 }
72dc1c09
GKH		 1979 hso_kick_transmit(serial);
1980
1981 D1(" ");
1982 return;
1983}
1984
1985/* called for writing diag or CS serial port */
1986static int hso_std_serial_write_data(struct hso_serial *serial)
1987{
1988 int count = serial->tx_data_count;
1989 int result;
1990
1991 usb_fill_bulk_urb(serial->tx_urb,
1992 serial->parent->usb,
1993 usb_sndbulkpipe(serial->parent->usb,
1994 serial->out_endp->
1995 bEndpointAddress & 0x7F),
1996 serial->tx_data, serial->tx_data_count,
1997 hso_std_serial_write_bulk_callback, serial);
1998
1999 result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC);
2000 if (result) {
2001 dev_warn(&serial->parent->usb->dev,
2002 "Failed to submit urb - res %d\n", result);
2003 return result;
2004 }
2005
2006 return count;
2007}
2008
2009/* callback after read or write on muxed serial port */
2010static void ctrl_callback(struct urb *urb)
2011{
2012 struct hso_serial *serial = urb->context;
2013 struct usb_ctrlrequest *req;
2014 int status = urb->status;
e136e303 2015 struct tty_struct *tty;
72dc1c09
GKH		 2016
2017 /* sanity check */
2018 if (!serial)
2019 return;
2020
2021 spin_lock(&serial->serial_lock);
2022 serial->tx_urb_used = 0;
e136e303 2023 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 2024 spin_unlock(&serial->serial_lock);
2025 if (status) {
2026 log_usb_status(status, __func__);
e136e303 2027 tty_kref_put(tty);
72dc1c09
GKH		 2028 return;
2029 }
2030
2031 /* what request? */
2032 req = (struct usb_ctrlrequest *)(urb->setup_packet);
2033 D4("\n--- Got muxed ctrl callback 0x%02X ---", status);
2034 D4("Actual length of urb = %d\n", urb->actual_length);
2035 DUMP1(urb->transfer_buffer, urb->actual_length);
2036
2037 if (req->bRequestType ==
2038 (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) {
2039 /* response to a read command */
8ef5ba63
DJB		 2040 serial->rx_urb_filled[0] = 1;
2041 spin_lock(&serial->serial_lock);
2042 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
2043 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 2044 } else {
2045 hso_put_activity(serial->parent);
e136e303
AC		 2046 if (tty)
2047 tty_wakeup(tty);
72dc1c09
GKH		 2048 /* response to a write command */
2049 hso_kick_transmit(serial);
2050 }
e136e303 2051 tty_kref_put(tty);
72dc1c09
GKH		 2052}
2053
2054/* handle RX data for serial port */
8ef5ba63 2055static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
72dc1c09 2056{
e136e303 2057 struct tty_struct *tty;
8ef5ba63
DJB		 2058 int write_length_remaining = 0;
2059 int curr_write_len;
e136e303 2060
72dc1c09
GKH		 2061 /* Sanity check */
2062 if (urb == NULL || serial == NULL) {
2063 D1("serial = NULL");
8ef5ba63 2064 return -2;
72dc1c09
GKH		 2065 }
2066
d45eb81c 2067 /* All callers to put_rxbuf_data hold serial_lock */
e136e303 2068 tty = tty_kref_get(serial->tty);
e136e303 2069
72dc1c09 2070 /* Push data to tty */
8ef5ba63
DJB		 2071 if (tty) {
2072 write_length_remaining = urb->actual_length -
2073 serial->curr_rx_urb_offset;
72dc1c09 2074 D1("data to push to tty");
8ef5ba63 2075 while (write_length_remaining) {
5839b414
DJB		 2076 if (test_bit(TTY_THROTTLED, &tty->flags)) {
2077 tty_kref_put(tty);
8ef5ba63 2078 return -1;
5839b414 2079 }
8ef5ba63
DJB		 2080 curr_write_len = tty_insert_flip_string
2081 (tty, urb->transfer_buffer +
2082 serial->curr_rx_urb_offset,
2083 write_length_remaining);
2084 serial->curr_rx_urb_offset += curr_write_len;
2085 write_length_remaining -= curr_write_len;
2086 tty_flip_buffer_push(tty);
72dc1c09 2087 }
72dc1c09 2088 }
8ef5ba63
DJB		 2089 if (write_length_remaining == 0) {
2090 serial->curr_rx_urb_offset = 0;
2091 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
72dc1c09 2092 }
e136e303 2093 tty_kref_put(tty);
8ef5ba63 2094 return write_length_remaining;
72dc1c09
GKH		 2095}
2096
8ef5ba63 2097
72dc1c09
GKH		 2098/* Base driver functions */
2099
2100static void hso_log_port(struct hso_device *hso_dev)
2101{
2102 char *port_type;
2103 char port_dev[20];
2104
2105 switch (hso_dev->port_spec & HSO_PORT_MASK) {
2106 case HSO_PORT_CONTROL:
2107 port_type = "Control";
2108 break;
2109 case HSO_PORT_APP:
2110 port_type = "Application";
2111 break;
2112 case HSO_PORT_GPS:
2113 port_type = "GPS";
2114 break;
2115 case HSO_PORT_GPS_CONTROL:
2116 port_type = "GPS control";
2117 break;
2118 case HSO_PORT_APP2:
2119 port_type = "Application2";
2120 break;
2121 case HSO_PORT_PCSC:
2122 port_type = "PCSC";
2123 break;
2124 case HSO_PORT_DIAG:
2125 port_type = "Diagnostic";
2126 break;
2127 case HSO_PORT_DIAG2:
2128 port_type = "Diagnostic2";
2129 break;
2130 case HSO_PORT_MODEM:
2131 port_type = "Modem";
2132 break;
2133 case HSO_PORT_NETWORK:
2134 port_type = "Network";
2135 break;
2136 default:
2137 port_type = "Unknown";
2138 break;
2139 }
2140 if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2141 sprintf(port_dev, "%s", dev2net(hso_dev)->net->name);
2142 } else
2143 sprintf(port_dev, "/dev/%s%d", tty_filename,
2144 dev2ser(hso_dev)->minor);
2145
2146 dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n",
2147 port_type, port_dev);
2148}
2149
2150static int hso_start_net_device(struct hso_device *hso_dev)
2151{
2152 int i, result = 0;
2153 struct hso_net *hso_net = dev2net(hso_dev);
2154
2155 if (!hso_net)
2156 return -ENODEV;
2157
2158 /* send URBs for all read buffers */
2159 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2160
2161 /* Prep a receive URB */
2162 usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i],
2163 hso_dev->usb,
2164 usb_rcvbulkpipe(hso_dev->usb,
2165 hso_net->in_endp->
2166 bEndpointAddress & 0x7F),
2167 hso_net->mux_bulk_rx_buf_pool[i],
2168 MUX_BULK_RX_BUF_SIZE, read_bulk_callback,
2169 hso_net);
2170
2171 /* Put it out there so the device can send us stuff */
2172 result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i],
2173 GFP_NOIO);
2174 if (result)
2175 dev_warn(&hso_dev->usb->dev,
2176 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__,
2177 i, result);
2178 }
2179
2180 return result;
2181}
2182
2183static int hso_stop_net_device(struct hso_device *hso_dev)
2184{
2185 int i;
2186 struct hso_net *hso_net = dev2net(hso_dev);
2187
2188 if (!hso_net)
2189 return -ENODEV;
2190
2191 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2192 if (hso_net->mux_bulk_rx_urb_pool[i])
2193 usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2194
2195 }
2196 if (hso_net->mux_bulk_tx_urb)
2197 usb_kill_urb(hso_net->mux_bulk_tx_urb);
2198
2199 return 0;
2200}
2201
2202static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags)
2203{
2204 int i, result = 0;
2205 struct hso_serial *serial = dev2ser(hso_dev);
2206
2207 if (!serial)
2208 return -ENODEV;
2209
2210 /* If it is not the MUX port fill in and submit a bulk urb (already
2211 * allocated in hso_serial_start) */
2212 if (!(serial->parent->port_spec & HSO_INTF_MUX)) {
2213 for (i = 0; i < serial->num_rx_urbs; i++) {
2214 usb_fill_bulk_urb(serial->rx_urb[i],
2215 serial->parent->usb,
2216 usb_rcvbulkpipe(serial->parent->usb,
2217 serial->in_endp->
2218 bEndpointAddress &
2219 0x7F),
2220 serial->rx_data[i],
2221 serial->rx_data_length,
2222 hso_std_serial_read_bulk_callback,
2223 serial);
2224 result = usb_submit_urb(serial->rx_urb[i], flags);
2225 if (result) {
2226 dev_warn(&serial->parent->usb->dev,
2227 "Failed to submit urb - res %d\n",
2228 result);
2229 break;
2230 }
2231 }
2232 } else {
2233 mutex_lock(&serial->shared_int->shared_int_lock);
2234 if (!serial->shared_int->use_count) {
2235 result =
2236 hso_mux_submit_intr_urb(serial->shared_int,
2237 hso_dev->usb, flags);
2238 }
2239 serial->shared_int->use_count++;
2240 mutex_unlock(&serial->shared_int->shared_int_lock);
2241 }
542f5482
DJB		 2242 if (serial->tiocmget)
2243 tiocmget_submit_urb(serial,
2244 serial->tiocmget,
2245 serial->parent->usb);
72dc1c09
GKH		 2246 return result;
2247}
2248
2249static int hso_stop_serial_device(struct hso_device *hso_dev)
2250{
2251 int i;
2252 struct hso_serial *serial = dev2ser(hso_dev);
542f5482 2253 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2254
2255 if (!serial)
2256 return -ENODEV;
2257
2258 for (i = 0; i < serial->num_rx_urbs; i++) {
8ef5ba63 2259 if (serial->rx_urb[i]) {
72dc1c09 2260 usb_kill_urb(serial->rx_urb[i]);
8ef5ba63
DJB		 2261 serial->rx_urb_filled[i] = 0;
2262 }
72dc1c09 2263 }
8ef5ba63
DJB		 2264 serial->curr_rx_urb_idx = 0;
2265 serial->curr_rx_urb_offset = 0;
72dc1c09
GKH		 2266
2267 if (serial->tx_urb)
2268 usb_kill_urb(serial->tx_urb);
2269
2270 if (serial->shared_int) {
2271 mutex_lock(&serial->shared_int->shared_int_lock);
2272 if (serial->shared_int->use_count &&
2273 (--serial->shared_int->use_count == 0)) {
2274 struct urb *urb;
2275
2276 urb = serial->shared_int->shared_intr_urb;
2277 if (urb)
2278 usb_kill_urb(urb);
2279 }
2280 mutex_unlock(&serial->shared_int->shared_int_lock);
2281 }
542f5482
DJB		 2282 tiocmget = serial->tiocmget;
2283 if (tiocmget) {
2284 wake_up_interruptible(&tiocmget->waitq);
2285 usb_kill_urb(tiocmget->urb);
2286 }
72dc1c09
GKH		 2287
2288 return 0;
2289}
2290
2291static void hso_serial_common_free(struct hso_serial *serial)
2292{
2293 int i;
2294
2295 if (serial->parent->dev)
2296 device_remove_file(serial->parent->dev, &dev_attr_hsotype);
2297
2298 tty_unregister_device(tty_drv, serial->minor);
2299
2300 for (i = 0; i < serial->num_rx_urbs; i++) {
2301 /* unlink and free RX URB */
2302 usb_free_urb(serial->rx_urb[i]);
2303 /* free the RX buffer */
2304 kfree(serial->rx_data[i]);
2305 }
2306
2307 /* unlink and free TX URB */
2308 usb_free_urb(serial->tx_urb);
2309 kfree(serial->tx_data);
2310}
2311
2312static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
2313 int rx_size, int tx_size)
2314{
2315 struct device *dev;
2316 int minor;
2317 int i;
2318
2319 minor = get_free_serial_index();
2320 if (minor < 0)
2321 goto exit;
2322
2323 /* register our minor number */
2324 serial->parent->dev = tty_register_device(tty_drv, minor,
2325 &serial->parent->interface->dev);
2326 dev = serial->parent->dev;
1aec5bdf 2327 dev_set_drvdata(dev, serial->parent);
72dc1c09
GKH		 2328 i = device_create_file(dev, &dev_attr_hsotype);
2329
2330 /* fill in specific data for later use */
2331 serial->minor = minor;
2332 serial->magic = HSO_SERIAL_MAGIC;
2333 spin_lock_init(&serial->serial_lock);
2334 serial->num_rx_urbs = num_urbs;
2335
2336 /* RX, allocate urb and initialize */
2337
2338 /* prepare our RX buffer */
2339 serial->rx_data_length = rx_size;
2340 for (i = 0; i < serial->num_rx_urbs; i++) {
2341 serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
2342 if (!serial->rx_urb[i]) {
2343 dev_err(dev, "Could not allocate urb?\n");
2344 goto exit;
2345 }
2346 serial->rx_urb[i]->transfer_buffer = NULL;
2347 serial->rx_urb[i]->transfer_buffer_length = 0;
2348 serial->rx_data[i] = kzalloc(serial->rx_data_length,
2349 GFP_KERNEL);
2350 if (!serial->rx_data[i]) {
2351 dev_err(dev, "%s - Out of memory\n", __func__);
2352 goto exit;
2353 }
2354 }
2355
2356 /* TX, allocate urb and initialize */
2357 serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2358 if (!serial->tx_urb) {
2359 dev_err(dev, "Could not allocate urb?\n");
2360 goto exit;
2361 }
2362 serial->tx_urb->transfer_buffer = NULL;
2363 serial->tx_urb->transfer_buffer_length = 0;
2364 /* prepare our TX buffer */
2365 serial->tx_data_count = 0;
2366 serial->tx_buffer_count = 0;
2367 serial->tx_data_length = tx_size;
2368 serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL);
2369 if (!serial->tx_data) {
2370 dev_err(dev, "%s - Out of memory", __func__);
2371 goto exit;
2372 }
2373 serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL);
2374 if (!serial->tx_buffer) {
2375 dev_err(dev, "%s - Out of memory", __func__);
2376 goto exit;
2377 }
2378
2379 return 0;
2380exit:
2381 hso_serial_common_free(serial);
2382 return -1;
2383}
2384
72dc1c09
GKH		 2385/* Creates a general hso device */
2386static struct hso_device *hso_create_device(struct usb_interface *intf,
2387 int port_spec)
2388{
2389 struct hso_device *hso_dev;
2390
2391 hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC);
2392 if (!hso_dev)
2393 return NULL;
2394
2395 hso_dev->port_spec = port_spec;
2396 hso_dev->usb = interface_to_usbdev(intf);
2397 hso_dev->interface = intf;
2398 kref_init(&hso_dev->ref);
ab153d84
DM		 2399 mutex_init(&hso_dev->mutex);
2400
72dc1c09
GKH		 2401 INIT_WORK(&hso_dev->async_get_intf, async_get_intf);
2402 INIT_WORK(&hso_dev->async_put_intf, async_put_intf);
2403
2404 return hso_dev;
2405}
2406
2407/* Removes a network device in the network device table */
2408static int remove_net_device(struct hso_device *hso_dev)
2409{
2410 int i;
2411
2412 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2413 if (network_table[i] == hso_dev) {
2414 network_table[i] = NULL;
2415 break;
2416 }
2417 }
2418 if (i == HSO_MAX_NET_DEVICES)
2419 return -1;
2420 return 0;
2421}
2422
2423/* Frees our network device */
2424static void hso_free_net_device(struct hso_device *hso_dev)
2425{
2426 int i;
2427 struct hso_net *hso_net = dev2net(hso_dev);
2428
2429 if (!hso_net)
2430 return;
2431
3b7d2b31
JD		 2432 remove_net_device(hso_net->parent);
2433
2434 if (hso_net->net) {
2435 unregister_netdev(hso_net->net);
2436 free_netdev(hso_net->net);
2437 }
2438
72dc1c09
GKH		 2439 /* start freeing */
2440 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2441 usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2442 kfree(hso_net->mux_bulk_rx_buf_pool[i]);
3b7d2b31 2443 hso_net->mux_bulk_rx_buf_pool[i] = NULL;
72dc1c09
GKH		 2444 }
2445 usb_free_urb(hso_net->mux_bulk_tx_urb);
2446 kfree(hso_net->mux_bulk_tx_buf);
3b7d2b31 2447 hso_net->mux_bulk_tx_buf = NULL;
ab153d84 2448
e44578ea 2449 kfree(hso_dev);
72dc1c09
GKH		 2450}
2451
c266cb4e
SH		 2452static const struct net_device_ops hso_netdev_ops = {
2453 .ndo_open = hso_net_open,
2454 .ndo_stop = hso_net_close,
2455 .ndo_start_xmit = hso_net_start_xmit,
2456 .ndo_tx_timeout = hso_net_tx_timeout,
2457};
2458
72dc1c09
GKH		 2459/* initialize the network interface */
2460static void hso_net_init(struct net_device *net)
2461{
2462 struct hso_net *hso_net = netdev_priv(net);
2463
2464 D1("sizeof hso_net is %d", (int)sizeof(*hso_net));
2465
2466 /* fill in the other fields */
c266cb4e 2467 net->netdev_ops = &hso_netdev_ops;
72dc1c09
GKH		 2468 net->watchdog_timeo = HSO_NET_TX_TIMEOUT;
2469 net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
2470 net->type = ARPHRD_NONE;
2471 net->mtu = DEFAULT_MTU - 14;
2472 net->tx_queue_len = 10;
2473 SET_ETHTOOL_OPS(net, &ops);
2474
2475 /* and initialize the semaphore */
2476 spin_lock_init(&hso_net->net_lock);
2477}
2478
2479/* Adds a network device in the network device table */
2480static int add_net_device(struct hso_device *hso_dev)
2481{
2482 int i;
2483
2484 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2485 if (network_table[i] == NULL) {
2486 network_table[i] = hso_dev;
2487 break;
2488 }
2489 }
2490 if (i == HSO_MAX_NET_DEVICES)
2491 return -1;
2492 return 0;
2493}
2494
19d337df 2495static int hso_rfkill_set_block(void *data, bool blocked)
72dc1c09
GKH		 2496{
2497 struct hso_device *hso_dev = data;
19d337df 2498 int enabled = !blocked;
72dc1c09
GKH		 2499 int rv;
2500
ab153d84 2501 mutex_lock(&hso_dev->mutex);
72dc1c09
GKH		 2502 if (hso_dev->usb_gone)
2503 rv = 0;
2504 else
2505 rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0),
2506 enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
2507 USB_CTRL_SET_TIMEOUT);
ab153d84 2508 mutex_unlock(&hso_dev->mutex);
72dc1c09
GKH		 2509 return rv;
2510}
2511
19d337df
JB		 2512static const struct rfkill_ops hso_rfkill_ops = {
2513 .set_block = hso_rfkill_set_block,
2514};
2515
72dc1c09
GKH		 2516/* Creates and sets up everything for rfkill */
2517static void hso_create_rfkill(struct hso_device *hso_dev,
2518 struct usb_interface *interface)
2519{
2520 struct hso_net *hso_net = dev2net(hso_dev);
939a9516 2521 struct device *dev = &hso_net->net->dev;
72dc1c09
GKH		 2522 char *rfkn;
2523
72dc1c09 2524 rfkn = kzalloc(20, GFP_KERNEL);
19d337df 2525 if (!rfkn)
939a9516 2526 dev_err(dev, "%s - Out of memory\n", __func__);
19d337df 2527
72dc1c09
GKH		 2528 snprintf(rfkn, 20, "hso-%d",
2529 interface->altsetting->desc.bInterfaceNumber);
19d337df
JB		 2530
2531 hso_net->rfkill = rfkill_alloc(rfkn,
2532 &interface_to_usbdev(interface)->dev,
2533 RFKILL_TYPE_WWAN,
2534 &hso_rfkill_ops, hso_dev);
2535 if (!hso_net->rfkill) {
2536 dev_err(dev, "%s - Out of memory\n", __func__);
2537 kfree(rfkn);
2538 return;
2539 }
72dc1c09 2540 if (rfkill_register(hso_net->rfkill) < 0) {
19d337df 2541 rfkill_destroy(hso_net->rfkill);
72dc1c09 2542 kfree(rfkn);
939a9516
JM		 2543 hso_net->rfkill = NULL;
2544 dev_err(dev, "%s - Failed to register rfkill\n", __func__);
72dc1c09
GKH		 2545 return;
2546 }
2547}
2548
384912ed
MH		 2549static struct device_type hso_type = {
2550 .name = "wwan",
2551};
2552
72dc1c09 2553/* Creates our network device */
0de8ca59
JD		 2554static struct hso_device *hso_create_net_device(struct usb_interface *interface,
2555 int port_spec)
72dc1c09
GKH		 2556{
2557 int result, i;
2558 struct net_device *net;
2559 struct hso_net *hso_net;
2560 struct hso_device *hso_dev;
2561
0de8ca59 2562 hso_dev = hso_create_device(interface, port_spec);
72dc1c09
GKH		 2563 if (!hso_dev)
2564 return NULL;
2565
2566 /* allocate our network device, then we can put in our private data */
2567 /* call hso_net_init to do the basic initialization */
2568 net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init);
2569 if (!net) {
2570 dev_err(&interface->dev, "Unable to create ethernet device\n");
2571 goto exit;
2572 }
2573
2574 hso_net = netdev_priv(net);
2575
2576 hso_dev->port_data.dev_net = hso_net;
2577 hso_net->net = net;
2578 hso_net->parent = hso_dev;
2579
2580 hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2581 USB_DIR_IN);
2582 if (!hso_net->in_endp) {
2583 dev_err(&interface->dev, "Can't find BULK IN endpoint\n");
2584 goto exit;
2585 }
2586 hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2587 USB_DIR_OUT);
2588 if (!hso_net->out_endp) {
2589 dev_err(&interface->dev, "Can't find BULK OUT endpoint\n");
2590 goto exit;
2591 }
2592 SET_NETDEV_DEV(net, &interface->dev);
384912ed 2593 SET_NETDEV_DEVTYPE(net, &hso_type);
72dc1c09
GKH		 2594
2595 /* registering our net device */
2596 result = register_netdev(net);
2597 if (result) {
2598 dev_err(&interface->dev, "Failed to register device\n");
2599 goto exit;
2600 }
2601
2602 /* start allocating */
2603 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2604 hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL);
2605 if (!hso_net->mux_bulk_rx_urb_pool[i]) {
2606 dev_err(&interface->dev, "Could not allocate rx urb\n");
2607 goto exit;
2608 }
2609 hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE,
2610 GFP_KERNEL);
2611 if (!hso_net->mux_bulk_rx_buf_pool[i]) {
2612 dev_err(&interface->dev, "Could not allocate rx buf\n");
2613 goto exit;
2614 }
2615 }
2616 hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2617 if (!hso_net->mux_bulk_tx_urb) {
2618 dev_err(&interface->dev, "Could not allocate tx urb\n");
2619 goto exit;
2620 }
2621 hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL);
2622 if (!hso_net->mux_bulk_tx_buf) {
2623 dev_err(&interface->dev, "Could not allocate tx buf\n");
2624 goto exit;
2625 }
2626
2627 add_net_device(hso_dev);
2628
2629 hso_log_port(hso_dev);
2630
2631 hso_create_rfkill(hso_dev, interface);
2632
2633 return hso_dev;
2634exit:
2635 hso_free_net_device(hso_dev);
2636 return NULL;
2637}
2638
542f5482
DJB		 2639static void hso_free_tiomget(struct hso_serial *serial)
2640{
2641 struct hso_tiocmget *tiocmget = serial->tiocmget;
2642 if (tiocmget) {
542f5482
DJB		 2643 if (tiocmget->urb) {
2644 usb_free_urb(tiocmget->urb);
2645 tiocmget->urb = NULL;
2646 }
2647 serial->tiocmget = NULL;
3b7d2b31 2648 kfree(tiocmget);
542f5482
DJB		 2649
2650 }
2651}
2652
72dc1c09
GKH		 2653/* Frees an AT channel ( goes for both mux and non-mux ) */
2654static void hso_free_serial_device(struct hso_device *hso_dev)
2655{
2656 struct hso_serial *serial = dev2ser(hso_dev);
2657
2658 if (!serial)
2659 return;
2660 set_serial_by_index(serial->minor, NULL);
2661
2662 hso_serial_common_free(serial);
2663
2664 if (serial->shared_int) {
2665 mutex_lock(&serial->shared_int->shared_int_lock);
2666 if (--serial->shared_int->ref_count == 0)
2667 hso_free_shared_int(serial->shared_int);
2668 else
2669 mutex_unlock(&serial->shared_int->shared_int_lock);
2670 }
542f5482 2671 hso_free_tiomget(serial);
72dc1c09 2672 kfree(serial);
e44578ea 2673 kfree(hso_dev);
72dc1c09
GKH		 2674}
2675
2676/* Creates a bulk AT channel */
2677static struct hso_device *hso_create_bulk_serial_device(
2678 struct usb_interface *interface, int port)
2679{
2680 struct hso_device *hso_dev;
2681 struct hso_serial *serial;
2682 int num_urbs;
542f5482 2683 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2684
2685 hso_dev = hso_create_device(interface, port);
2686 if (!hso_dev)
2687 return NULL;
2688
2689 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2690 if (!serial)
2691 goto exit;
2692
2693 serial->parent = hso_dev;
2694 hso_dev->port_data.dev_serial = serial;
2695
58eb17f1 2696 if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
72dc1c09 2697 num_urbs = 2;
542f5482
DJB		 2698 serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
2699 GFP_KERNEL);
2700 /* it isn't going to break our heart if serial->tiocmget
2701 * allocation fails don't bother checking this.
2702 */
2703 if (serial->tiocmget) {
2704 tiocmget = serial->tiocmget;
2705 tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
2706 if (tiocmget->urb) {
2707 mutex_init(&tiocmget->mutex);
2708 init_waitqueue_head(&tiocmget->waitq);
2709 tiocmget->endp = hso_get_ep(
2710 interface,
2711 USB_ENDPOINT_XFER_INT,
2712 USB_DIR_IN);
2713 } else
2714 hso_free_tiomget(serial);
2715 }
2716 }
72dc1c09
GKH		 2717 else
2718 num_urbs = 1;
2719
2720 if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE,
2721 BULK_URB_TX_SIZE))
2722 goto exit;
2723
2724 serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2725 USB_DIR_IN);
2726 if (!serial->in_endp) {
2727 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2728 goto exit2;
72dc1c09
GKH		 2729 }
2730
2731 if (!
2732 (serial->out_endp =
2733 hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) {
2734 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2735 goto exit2;
72dc1c09
GKH		 2736 }
2737
2738 serial->write_data = hso_std_serial_write_data;
2739
2740 /* and record this serial */
2741 set_serial_by_index(serial->minor, serial);
2742
2743 /* setup the proc dirs and files if needed */
2744 hso_log_port(hso_dev);
2745
2746 /* done, return it */
2747 return hso_dev;
e57b641d
AB		 2748
2749exit2:
2750 hso_serial_common_free(serial);
72dc1c09 2751exit:
542f5482 2752 hso_free_tiomget(serial);
72dc1c09 2753 kfree(serial);
e44578ea 2754 kfree(hso_dev);
72dc1c09
GKH		 2755 return NULL;
2756}
2757
2758/* Creates a multiplexed AT channel */
2759static
2760struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
2761 int port,
2762 struct hso_shared_int *mux)
2763{
2764 struct hso_device *hso_dev;
2765 struct hso_serial *serial;
2766 int port_spec;
2767
2768 port_spec = HSO_INTF_MUX;
2769 port_spec &= ~HSO_PORT_MASK;
2770
2771 port_spec |= hso_mux_to_port(port);
2772 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT)
2773 return NULL;
2774
2775 hso_dev = hso_create_device(interface, port_spec);
2776 if (!hso_dev)
2777 return NULL;
2778
2779 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2780 if (!serial)
2781 goto exit;
2782
2783 hso_dev->port_data.dev_serial = serial;
2784 serial->parent = hso_dev;
2785
2786 if (hso_serial_common_create
2787 (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE))
2788 goto exit;
2789
2790 serial->tx_data_length--;
2791 serial->write_data = hso_mux_serial_write_data;
2792
2793 serial->shared_int = mux;
2794 mutex_lock(&serial->shared_int->shared_int_lock);
2795 serial->shared_int->ref_count++;
2796 mutex_unlock(&serial->shared_int->shared_int_lock);
2797
2798 /* and record this serial */
2799 set_serial_by_index(serial->minor, serial);
2800
2801 /* setup the proc dirs and files if needed */
2802 hso_log_port(hso_dev);
2803
2804 /* done, return it */
2805 return hso_dev;
2806
2807exit:
2808 if (serial) {
2809 tty_unregister_device(tty_drv, serial->minor);
2810 kfree(serial);
2811 }
2812 if (hso_dev)
e44578ea 2813 kfree(hso_dev);
72dc1c09
GKH		 2814 return NULL;
2815
2816}
2817
2818static void hso_free_shared_int(struct hso_shared_int *mux)
2819{
2820 usb_free_urb(mux->shared_intr_urb);
2821 kfree(mux->shared_intr_buf);
2822 mutex_unlock(&mux->shared_int_lock);
2823 kfree(mux);
2824}
2825
2826static
2827struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface)
2828{
2829 struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL);
2830
2831 if (!mux)
2832 return NULL;
2833
2834 mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT,
2835 USB_DIR_IN);
2836 if (!mux->intr_endp) {
2837 dev_err(&interface->dev, "Can't find INT IN endpoint\n");
2838 goto exit;
2839 }
2840
2841 mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL);
2842 if (!mux->shared_intr_urb) {
2843 dev_err(&interface->dev, "Could not allocate intr urb?");
2844 goto exit;
2845 }
2846 mux->shared_intr_buf = kzalloc(mux->intr_endp->wMaxPacketSize,
2847 GFP_KERNEL);
2848 if (!mux->shared_intr_buf) {
2849 dev_err(&interface->dev, "Could not allocate intr buf?");
2850 goto exit;
2851 }
2852
2853 mutex_init(&mux->shared_int_lock);
2854
2855 return mux;
2856
2857exit:
2858 kfree(mux->shared_intr_buf);
2859 usb_free_urb(mux->shared_intr_urb);
2860 kfree(mux);
2861 return NULL;
2862}
2863
2864/* Gets the port spec for a certain interface */
2865static int hso_get_config_data(struct usb_interface *interface)
2866{
2867 struct usb_device *usbdev = interface_to_usbdev(interface);
2868 u8 config_data[17];
2869 u32 if_num = interface->altsetting->desc.bInterfaceNumber;
2870 s32 result;
2871
2872 if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
2873 0x86, 0xC0, 0, 0, config_data, 17,
2874 USB_CTRL_SET_TIMEOUT) != 0x11) {
2875 return -EIO;
2876 }
2877
2878 switch (config_data[if_num]) {
2879 case 0x0:
2880 result = 0;
2881 break;
2882 case 0x1:
2883 result = HSO_PORT_DIAG;
2884 break;
2885 case 0x2:
2886 result = HSO_PORT_GPS;
2887 break;
2888 case 0x3:
2889 result = HSO_PORT_GPS_CONTROL;
2890 break;
2891 case 0x4:
2892 result = HSO_PORT_APP;
2893 break;
2894 case 0x5:
2895 result = HSO_PORT_APP2;
2896 break;
2897 case 0x6:
2898 result = HSO_PORT_CONTROL;
2899 break;
2900 case 0x7:
2901 result = HSO_PORT_NETWORK;
2902 break;
2903 case 0x8:
2904 result = HSO_PORT_MODEM;
2905 break;
2906 case 0x9:
2907 result = HSO_PORT_MSD;
2908 break;
2909 case 0xa:
2910 result = HSO_PORT_PCSC;
2911 break;
2912 case 0xb:
2913 result = HSO_PORT_VOICE;
2914 break;
2915 default:
2916 result = 0;
2917 }
2918
2919 if (result)
2920 result |= HSO_INTF_BULK;
2921
2922 if (config_data[16] & 0x1)
2923 result |= HSO_INFO_CRC_BUG;
2924
2925 return result;
2926}
2927
2928/* called once for each interface upon device insertion */
2929static int hso_probe(struct usb_interface *interface,
2930 const struct usb_device_id *id)
2931{
2932 int mux, i, if_num, port_spec;
2933 unsigned char port_mask;
2934 struct hso_device *hso_dev = NULL;
2935 struct hso_shared_int *shared_int;
2936 struct hso_device *tmp_dev = NULL;
2937
2938 if_num = interface->altsetting->desc.bInterfaceNumber;
2939
2940 /* Get the interface/port specification from either driver_info or from
2941 * the device itself */
2942 if (id->driver_info)
2943 port_spec = ((u32 *)(id->driver_info))[if_num];
2944 else
2945 port_spec = hso_get_config_data(interface);
2946
2947 if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
2948 dev_err(&interface->dev, "Not our interface\n");
2949 return -ENODEV;
2950 }
2951 /* Check if we need to switch to alt interfaces prior to port
2952 * configuration */
2953 if (interface->num_altsetting > 1)
2954 usb_set_interface(interface_to_usbdev(interface), if_num, 1);
2955 interface->needs_remote_wakeup = 1;
2956
2957 /* Allocate new hso device(s) */
2958 switch (port_spec & HSO_INTF_MASK) {
2959 case HSO_INTF_MUX:
2960 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2961 /* Create the network device */
2962 if (!disable_net) {
0de8ca59
JD		 2963 hso_dev = hso_create_net_device(interface,
2964 port_spec);
72dc1c09
GKH		 2965 if (!hso_dev)
2966 goto exit;
2967 tmp_dev = hso_dev;
2968 }
2969 }
2970
2971 if (hso_get_mux_ports(interface, &port_mask))
2972 /* TODO: de-allocate everything */
2973 goto exit;
2974
2975 shared_int = hso_create_shared_int(interface);
2976 if (!shared_int)
2977 goto exit;
2978
2979 for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) {
2980 if (port_mask & i) {
2981 hso_dev = hso_create_mux_serial_device(
2982 interface, i, shared_int);
2983 if (!hso_dev)
2984 goto exit;
2985 }
2986 }
2987
2988 if (tmp_dev)
2989 hso_dev = tmp_dev;
2990 break;
2991
2992 case HSO_INTF_BULK:
2993 /* It's a regular bulk interface */
8e95a202
JP		 2994 if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) &&
2995 !disable_net)
0de8ca59 2996 hso_dev = hso_create_net_device(interface, port_spec);
72dc1c09
GKH		 2997 else
2998 hso_dev =
2999 hso_create_bulk_serial_device(interface, port_spec);
3000 if (!hso_dev)
3001 goto exit;
3002 break;
3003 default:
3004 goto exit;
3005 }
3006
72dc1c09
GKH		 3007 /* save our data pointer in this device */
3008 usb_set_intfdata(interface, hso_dev);
3009
3010 /* done */
3011 return 0;
3012exit:
3013 hso_free_interface(interface);
3014 return -ENODEV;
3015}
3016
3017/* device removed, cleaning up */
3018static void hso_disconnect(struct usb_interface *interface)
3019{
3020 hso_free_interface(interface);
3021
3022 /* remove reference of our private data */
3023 usb_set_intfdata(interface, NULL);
72dc1c09
GKH		 3024}
3025
3026static void async_get_intf(struct work_struct *data)
3027{
3028 struct hso_device *hso_dev =
3029 container_of(data, struct hso_device, async_get_intf);
3030 usb_autopm_get_interface(hso_dev->interface);
3031}
3032
3033static void async_put_intf(struct work_struct *data)
3034{
3035 struct hso_device *hso_dev =
3036 container_of(data, struct hso_device, async_put_intf);
3037 usb_autopm_put_interface(hso_dev->interface);
3038}
3039
3040static int hso_get_activity(struct hso_device *hso_dev)
3041{
3042 if (hso_dev->usb->state == USB_STATE_SUSPENDED) {
3043 if (!hso_dev->is_active) {
3044 hso_dev->is_active = 1;
3045 schedule_work(&hso_dev->async_get_intf);
3046 }
3047 }
3048
3049 if (hso_dev->usb->state != USB_STATE_CONFIGURED)
3050 return -EAGAIN;
3051
3052 usb_mark_last_busy(hso_dev->usb);
3053
3054 return 0;
3055}
3056
3057static int hso_put_activity(struct hso_device *hso_dev)
3058{
3059 if (hso_dev->usb->state != USB_STATE_SUSPENDED) {
3060 if (hso_dev->is_active) {
3061 hso_dev->is_active = 0;
3062 schedule_work(&hso_dev->async_put_intf);
3063 return -EAGAIN;
3064 }
3065 }
3066 hso_dev->is_active = 0;
3067 return 0;
3068}
3069
3070/* called by kernel when we need to suspend device */
3071static int hso_suspend(struct usb_interface *iface, pm_message_t message)
3072{
3073 int i, result;
3074
3075 /* Stop all serial ports */
3076 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3077 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3078 result = hso_stop_serial_device(serial_table[i]);
3079 if (result)
3080 goto out;
3081 }
3082 }
3083
3084 /* Stop all network ports */
3085 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3086 if (network_table[i] &&
3087 (network_table[i]->interface == iface)) {
3088 result = hso_stop_net_device(network_table[i]);
3089 if (result)
3090 goto out;
3091 }
3092 }
3093
3094out:
3095 return 0;
3096}
3097
3098/* called by kernel when we need to resume device */
3099static int hso_resume(struct usb_interface *iface)
3100{
3101 int i, result = 0;
3102 struct hso_net *hso_net;
3103
3104 /* Start all serial ports */
3105 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3106 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3107 if (dev2ser(serial_table[i])->open_count) {
3108 result =
3109 hso_start_serial_device(serial_table[i], GFP_NOIO);
3110 hso_kick_transmit(dev2ser(serial_table[i]));
3111 if (result)
3112 goto out;
3113 }
3114 }
3115 }
3116
3117 /* Start all network ports */
3118 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3119 if (network_table[i] &&
3120 (network_table[i]->interface == iface)) {
3121 hso_net = dev2net(network_table[i]);
89930b7b
DJB		 3122 if (hso_net->flags & IFF_UP) {
3123 /* First transmit any lingering data,
3124 then restart the device. */
3125 if (hso_net->skb_tx_buf) {
3126 dev_dbg(&iface->dev,
3127 "Transmitting"
3128 " lingering data\n");
3129 hso_net_start_xmit(hso_net->skb_tx_buf,
3130 hso_net->net);
3131 hso_net->skb_tx_buf = NULL;
3132 }
3133 result = hso_start_net_device(network_table[i]);
3134 if (result)
3135 goto out;
72dc1c09 3136 }
72dc1c09
GKH		 3137 }
3138 }
3139
3140out:
3141 return result;
3142}
3143
3144static void hso_serial_ref_free(struct kref *ref)
3145{
3146 struct hso_device *hso_dev = container_of(ref, struct hso_device, ref);
3147
3148 hso_free_serial_device(hso_dev);
3149}
3150
3151static void hso_free_interface(struct usb_interface *interface)
3152{
3153 struct hso_serial *hso_dev;
e136e303 3154 struct tty_struct *tty;
72dc1c09
GKH		 3155 int i;
3156
3157 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
8e95a202
JP		 3158 if (serial_table[i] &&
3159 (serial_table[i]->interface == interface)) {
72dc1c09 3160 hso_dev = dev2ser(serial_table[i]);
e136e303
AC		 3161 spin_lock_irq(&hso_dev->serial_lock);
3162 tty = tty_kref_get(hso_dev->tty);
3163 spin_unlock_irq(&hso_dev->serial_lock);
3164 if (tty)
3165 tty_hangup(tty);
ab153d84 3166 mutex_lock(&hso_dev->parent->mutex);
e136e303 3167 tty_kref_put(tty);
72dc1c09 3168 hso_dev->parent->usb_gone = 1;
ab153d84
DM		 3169 mutex_unlock(&hso_dev->parent->mutex);
3170 kref_put(&serial_table[i]->ref, hso_serial_ref_free);
72dc1c09
GKH		 3171 }
3172 }
3173
3174 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
8e95a202
JP		 3175 if (network_table[i] &&
3176 (network_table[i]->interface == interface)) {
72dc1c09
GKH		 3177 struct rfkill *rfk = dev2net(network_table[i])->rfkill;
3178 /* hso_stop_net_device doesn't stop the net queue since
3179 * traffic needs to start it again when suspended */
3180 netif_stop_queue(dev2net(network_table[i])->net);
3181 hso_stop_net_device(network_table[i]);
3182 cancel_work_sync(&network_table[i]->async_put_intf);
3183 cancel_work_sync(&network_table[i]->async_get_intf);
19d337df 3184 if (rfk) {
72dc1c09 3185 rfkill_unregister(rfk);
19d337df
JB		 3186 rfkill_destroy(rfk);
3187 }
72dc1c09
GKH		 3188 hso_free_net_device(network_table[i]);
3189 }
3190 }
3191}
3192
3193/* Helper functions */
3194
3195/* Get the endpoint ! */
3196static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
3197 int type, int dir)
3198{
3199 int i;
3200 struct usb_host_interface *iface = intf->cur_altsetting;
3201 struct usb_endpoint_descriptor *endp;
3202
3203 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3204 endp = &iface->endpoint[i].desc;
3205 if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) &&
f201a8a4 3206 (usb_endpoint_type(endp) == type))
72dc1c09
GKH		 3207 return endp;
3208 }
3209
3210 return NULL;
3211}
3212
3213/* Get the byte that describes which ports are enabled */
3214static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports)
3215{
3216 int i;
3217 struct usb_host_interface *iface = intf->cur_altsetting;
3218
3219 if (iface->extralen == 3) {
3220 *ports = iface->extra[2];
3221 return 0;
3222 }
3223
3224 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3225 if (iface->endpoint[i].extralen == 3) {
3226 *ports = iface->endpoint[i].extra[2];
3227 return 0;
3228 }
3229 }
3230
3231 return -1;
3232}
3233
3234/* interrupt urb needs to be submitted, used for serial read of muxed port */
3235static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int,
3236 struct usb_device *usb, gfp_t gfp)
3237{
3238 int result;
3239
3240 usb_fill_int_urb(shared_int->shared_intr_urb, usb,
3241 usb_rcvintpipe(usb,
3242 shared_int->intr_endp->bEndpointAddress & 0x7F),
3243 shared_int->shared_intr_buf,
3244 shared_int->intr_endp->wMaxPacketSize,
3245 intr_callback, shared_int,
3246 shared_int->intr_endp->bInterval);
3247
3248 result = usb_submit_urb(shared_int->shared_intr_urb, gfp);
3249 if (result)
3250 dev_warn(&usb->dev, "%s failed mux_intr_urb %d", __func__,
3251 result);
3252
3253 return result;
3254}
3255
3256/* operations setup of the serial interface */
6c59f569 3257static const struct tty_operations hso_serial_ops = {
72dc1c09
GKH		 3258 .open = hso_serial_open,
3259 .close = hso_serial_close,
3260 .write = hso_serial_write,
3261 .write_room = hso_serial_write_room,
542f5482 3262 .ioctl = hso_serial_ioctl,
72dc1c09
GKH		 3263 .set_termios = hso_serial_set_termios,
3264 .chars_in_buffer = hso_serial_chars_in_buffer,
3265 .tiocmget = hso_serial_tiocmget,
3266 .tiocmset = hso_serial_tiocmset,
8ef5ba63 3267 .unthrottle = hso_unthrottle
72dc1c09
GKH		 3268};
3269
3270static struct usb_driver hso_driver = {
3271 .name = driver_name,
3272 .probe = hso_probe,
3273 .disconnect = hso_disconnect,
3274 .id_table = hso_ids,
3275 .suspend = hso_suspend,
3276 .resume = hso_resume,
9c8f92ae 3277 .reset_resume = hso_resume,
72dc1c09
GKH		 3278 .supports_autosuspend = 1,
3279};
3280
3281static int __init hso_init(void)
3282{
3283 int i;
3284 int result;
3285
3286 /* put it in the log */
3287 printk(KERN_INFO "hso: %s\n", version);
3288
3289 /* Initialise the serial table semaphore and table */
3290 spin_lock_init(&serial_table_lock);
3291 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++)
3292 serial_table[i] = NULL;
3293
3294 /* allocate our driver using the proper amount of supported minors */
3295 tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS);
3296 if (!tty_drv)
3297 return -ENOMEM;
3298
3299 /* fill in all needed values */
3300 tty_drv->magic = TTY_DRIVER_MAGIC;
3301 tty_drv->owner = THIS_MODULE;
3302 tty_drv->driver_name = driver_name;
3303 tty_drv->name = tty_filename;
3304
3305 /* if major number is provided as parameter, use that one */
3306 if (tty_major)
3307 tty_drv->major = tty_major;
3308
3309 tty_drv->minor_start = 0;
3310 tty_drv->num = HSO_SERIAL_TTY_MINORS;
3311 tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
3312 tty_drv->subtype = SERIAL_TYPE_NORMAL;
3313 tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
3314 tty_drv->init_termios = tty_std_termios;
ac9720c3 3315 hso_init_termios(&tty_drv->init_termios);
72dc1c09
GKH		 3316 tty_set_operations(tty_drv, &hso_serial_ops);
3317
3318 /* register the tty driver */
3319 result = tty_register_driver(tty_drv);
3320 if (result) {
3321 printk(KERN_ERR "%s - tty_register_driver failed(%d)\n",
3322 __func__, result);
3323 return result;
3324 }
3325
3326 /* register this module as an usb driver */
3327 result = usb_register(&hso_driver);
3328 if (result) {
3329 printk(KERN_ERR "Could not register hso driver? error: %d\n",
3330 result);
3331 /* cleanup serial interface */
3332 tty_unregister_driver(tty_drv);
3333 return result;
3334 }
3335
3336 /* done */
3337 return 0;
3338}
3339
3340static void __exit hso_exit(void)
3341{
3342 printk(KERN_INFO "hso: unloaded\n");
3343
3344 tty_unregister_driver(tty_drv);
3345 /* deregister the usb driver */
3346 usb_deregister(&hso_driver);
3347}
3348
3349/* Module definitions */
3350module_init(hso_init);
3351module_exit(hso_exit);
3352
3353MODULE_AUTHOR(MOD_AUTHOR);
3354MODULE_DESCRIPTION(MOD_DESCRIPTION);
3355MODULE_LICENSE(MOD_LICENSE);
3356MODULE_INFO(Version, DRIVER_VERSION);
3357
3358/* change the debug level (eg: insmod hso.ko debug=0x04) */
3359MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
3360module_param(debug, int, S_IRUGO | S_IWUSR);
3361
3362/* set the major tty number (eg: insmod hso.ko tty_major=245) */
3363MODULE_PARM_DESC(tty_major, "Set the major tty number");
3364module_param(tty_major, int, S_IRUGO | S_IWUSR);
3365
3366/* disable network interface (eg: insmod hso.ko disable_net=1) */
3367MODULE_PARM_DESC(disable_net, "Disable the network interface");
3368module_param(disable_net, int, S_IRUGO | S_IWUSR);
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