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NET: wan/x25_asy, move lapb_unregister to x25_asy_close_tty
[deliverable/linux.git] / drivers / net / usb / hso.c
CommitLineData
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
72dc1c09
GKH		 76#define MOD_AUTHOR "Option Wireless"
77#define MOD_DESCRIPTION "USB High Speed Option driver"
78#define MOD_LICENSE "GPL"
79
80#define HSO_MAX_NET_DEVICES 10
81#define HSO__MAX_MTU 2048
82#define DEFAULT_MTU 1500
83#define DEFAULT_MRU 1500
84
85#define CTRL_URB_RX_SIZE 1024
86#define CTRL_URB_TX_SIZE 64
87
88#define BULK_URB_RX_SIZE 4096
89#define BULK_URB_TX_SIZE 8192
90
91#define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU
92#define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU
93#define MUX_BULK_RX_BUF_COUNT 4
94#define USB_TYPE_OPTION_VENDOR 0x20
95
96/* These definitions are used with the struct hso_net flags element */
97/* - use *_bit operations on it. (bit indices not values.) */
98#define HSO_NET_RUNNING 0
99
100#define HSO_NET_TX_TIMEOUT (HZ*10)
101
72dc1c09
GKH		 102#define HSO_SERIAL_MAGIC 0x48534f31
103
104/* Number of ttys to handle */
105#define HSO_SERIAL_TTY_MINORS 256
106
107#define MAX_RX_URBS 2
108
0235f641
GKH		 109static inline struct hso_serial *get_serial_by_tty(struct tty_struct *tty)
110{
111 if (tty)
112 return tty->driver_data;
113 return NULL;
114}
72dc1c09
GKH		 115
116/*****************************************************************************/
117/* Debugging functions */
118/*****************************************************************************/
119#define D__(lvl_, fmt, arg...) \
120 do { \
121 printk(lvl_ "[%d:%s]: " fmt "\n", \
122 __LINE__, __func__, ## arg); \
123 } while (0)
124
125#define D_(lvl, args...) \
126 do { \
127 if (lvl & debug) \
128 D__(KERN_INFO, args); \
129 } while (0)
130
131#define D1(args...) D_(0x01, ##args)
132#define D2(args...) D_(0x02, ##args)
133#define D3(args...) D_(0x04, ##args)
134#define D4(args...) D_(0x08, ##args)
135#define D5(args...) D_(0x10, ##args)
136
137/*****************************************************************************/
138/* Enumerators */
139/*****************************************************************************/
140enum pkt_parse_state {
141 WAIT_IP,
142 WAIT_DATA,
143 WAIT_SYNC
144};
145
146/*****************************************************************************/
147/* Structs */
148/*****************************************************************************/
149
150struct hso_shared_int {
151 struct usb_endpoint_descriptor *intr_endp;
152 void *shared_intr_buf;
153 struct urb *shared_intr_urb;
154 struct usb_device *usb;
155 int use_count;
156 int ref_count;
157 struct mutex shared_int_lock;
158};
159
160struct hso_net {
161 struct hso_device *parent;
162 struct net_device *net;
163 struct rfkill *rfkill;
164
165 struct usb_endpoint_descriptor *in_endp;
166 struct usb_endpoint_descriptor *out_endp;
167
168 struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT];
169 struct urb *mux_bulk_tx_urb;
170 void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT];
171 void *mux_bulk_tx_buf;
172
173 struct sk_buff *skb_rx_buf;
174 struct sk_buff *skb_tx_buf;
175
176 enum pkt_parse_state rx_parse_state;
177 spinlock_t net_lock;
178
179 unsigned short rx_buf_size;
180 unsigned short rx_buf_missing;
181 struct iphdr rx_ip_hdr;
182
183 unsigned long flags;
184};
185
8ef5ba63
DJB		 186enum rx_ctrl_state{
187 RX_IDLE,
188 RX_SENT,
189 RX_PENDING
190};
191
542f5482
DJB		 192#define BM_REQUEST_TYPE (0xa1)
193#define B_NOTIFICATION (0x20)
194#define W_VALUE (0x0)
195#define W_INDEX (0x2)
196#define W_LENGTH (0x2)
197
198#define B_OVERRUN (0x1<<6)
199#define B_PARITY (0x1<<5)
200#define B_FRAMING (0x1<<4)
201#define B_RING_SIGNAL (0x1<<3)
202#define B_BREAK (0x1<<2)
203#define B_TX_CARRIER (0x1<<1)
204#define B_RX_CARRIER (0x1<<0)
205
206struct hso_serial_state_notification {
207 u8 bmRequestType;
208 u8 bNotification;
209 u16 wValue;
210 u16 wIndex;
211 u16 wLength;
212 u16 UART_state_bitmap;
ba2d3587 213} __packed;
542f5482
DJB		 214
215struct hso_tiocmget {
216 struct mutex mutex;
217 wait_queue_head_t waitq;
218 int intr_completed;
219 struct usb_endpoint_descriptor *endp;
220 struct urb *urb;
221 struct hso_serial_state_notification serial_state_notification;
222 u16 prev_UART_state_bitmap;
223 struct uart_icount icount;
224};
225
226
72dc1c09
GKH		 227struct hso_serial {
228 struct hso_device *parent;
229 int magic;
230 u8 minor;
231
232 struct hso_shared_int *shared_int;
233
234 /* rx/tx urb could be either a bulk urb or a control urb depending
235 on which serial port it is used on. */
236 struct urb *rx_urb[MAX_RX_URBS];
237 u8 num_rx_urbs;
238 u8 *rx_data[MAX_RX_URBS];
239 u16 rx_data_length; /* should contain allocated length */
240
241 struct urb *tx_urb;
242 u8 *tx_data;
243 u8 *tx_buffer;
244 u16 tx_data_length; /* should contain allocated length */
245 u16 tx_data_count;
246 u16 tx_buffer_count;
247 struct usb_ctrlrequest ctrl_req_tx;
248 struct usb_ctrlrequest ctrl_req_rx;
249
250 struct usb_endpoint_descriptor *in_endp;
251 struct usb_endpoint_descriptor *out_endp;
252
8ef5ba63 253 enum rx_ctrl_state rx_state;
72dc1c09
GKH		 254 u8 rts_state;
255 u8 dtr_state;
256 unsigned tx_urb_used:1;
257
258 /* from usb_serial_port */
259 struct tty_struct *tty;
260 int open_count;
261 spinlock_t serial_lock;
262
263 int (*write_data) (struct hso_serial *serial);
542f5482 264 struct hso_tiocmget *tiocmget;
8ef5ba63
DJB		 265 /* Hacks required to get flow control
266 * working on the serial receive buffers
267 * so as not to drop characters on the floor.
268 */
269 int curr_rx_urb_idx;
270 u16 curr_rx_urb_offset;
271 u8 rx_urb_filled[MAX_RX_URBS];
272 struct tasklet_struct unthrottle_tasklet;
273 struct work_struct retry_unthrottle_workqueue;
72dc1c09
GKH		 274};
275
276struct hso_device {
277 union {
278 struct hso_serial *dev_serial;
279 struct hso_net *dev_net;
280 } port_data;
281
282 u32 port_spec;
283
284 u8 is_active;
285 u8 usb_gone;
286 struct work_struct async_get_intf;
287 struct work_struct async_put_intf;
68a351c5 288 struct work_struct reset_device;
72dc1c09
GKH		 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);
68a351c5
JD		 335static void handle_usb_error(int status, const char *function,
336 struct hso_device *hso_dev);
72dc1c09
GKH		 337static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
338 int type, int dir);
339static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports);
340static void hso_free_interface(struct usb_interface *intf);
341static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags);
342static int hso_stop_serial_device(struct hso_device *hso_dev);
343static int hso_start_net_device(struct hso_device *hso_dev);
344static void hso_free_shared_int(struct hso_shared_int *shared_int);
345static int hso_stop_net_device(struct hso_device *hso_dev);
346static void hso_serial_ref_free(struct kref *ref);
8ef5ba63
DJB		 347static void hso_std_serial_read_bulk_callback(struct urb *urb);
348static int hso_mux_serial_read(struct hso_serial *serial);
72dc1c09
GKH		 349static void async_get_intf(struct work_struct *data);
350static void async_put_intf(struct work_struct *data);
351static int hso_put_activity(struct hso_device *hso_dev);
352static int hso_get_activity(struct hso_device *hso_dev);
542f5482 353static void tiocmget_intr_callback(struct urb *urb);
68a351c5 354static void reset_device(struct work_struct *data);
72dc1c09
GKH		 355/*****************************************************************************/
356/* Helping functions */
357/*****************************************************************************/
358
359/* #define DEBUG */
360
0235f641
GKH		 361static inline struct hso_net *dev2net(struct hso_device *hso_dev)
362{
363 return hso_dev->port_data.dev_net;
364}
365
366static inline struct hso_serial *dev2ser(struct hso_device *hso_dev)
367{
368 return hso_dev->port_data.dev_serial;
369}
72dc1c09
GKH		 370
371/* Debugging functions */
372#ifdef DEBUG
373static void dbg_dump(int line_count, const char *func_name, unsigned char *buf,
374 unsigned int len)
375{
0235f641 376 static char name[255];
72dc1c09 377
0235f641
GKH		 378 sprintf(name, "hso[%d:%s]", line_count, func_name);
379 print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len);
72dc1c09
GKH		 380}
381
382#define DUMP(buf_, len_) \
9ce673d5 383 dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_)
72dc1c09
GKH		 384
385#define DUMP1(buf_, len_) \
386 do { \
387 if (0x01 & debug) \
388 DUMP(buf_, len_); \
389 } while (0)
390#else
391#define DUMP(buf_, len_)
392#define DUMP1(buf_, len_)
393#endif
394
395/* module parameters */
396static int debug;
397static int tty_major;
398static int disable_net;
399
400/* driver info */
401static const char driver_name[] = "hso";
402static const char tty_filename[] = "ttyHS";
242647bc 403static const char *version = __FILE__ ": " MOD_AUTHOR;
72dc1c09
GKH		 404/* the usb driver itself (registered in hso_init) */
405static struct usb_driver hso_driver;
406/* serial structures */
407static struct tty_driver *tty_drv;
408static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS];
409static struct hso_device *network_table[HSO_MAX_NET_DEVICES];
410static spinlock_t serial_table_lock;
72dc1c09
GKH		 411
412static const s32 default_port_spec[] = {
413 HSO_INTF_MUX | HSO_PORT_NETWORK,
414 HSO_INTF_BULK | HSO_PORT_DIAG,
415 HSO_INTF_BULK | HSO_PORT_MODEM,
416 0
417};
418
419static const s32 icon321_port_spec[] = {
420 HSO_INTF_MUX | HSO_PORT_NETWORK,
421 HSO_INTF_BULK | HSO_PORT_DIAG2,
422 HSO_INTF_BULK | HSO_PORT_MODEM,
423 HSO_INTF_BULK | HSO_PORT_DIAG,
424 0
425};
426
427#define default_port_device(vendor, product) \
428 USB_DEVICE(vendor, product), \
429 .driver_info = (kernel_ulong_t)default_port_spec
430
431#define icon321_port_device(vendor, product) \
432 USB_DEVICE(vendor, product), \
433 .driver_info = (kernel_ulong_t)icon321_port_spec
434
435/* list of devices we support */
436static const struct usb_device_id hso_ids[] = {
437 {default_port_device(0x0af0, 0x6711)},
438 {default_port_device(0x0af0, 0x6731)},
439 {default_port_device(0x0af0, 0x6751)},
440 {default_port_device(0x0af0, 0x6771)},
441 {default_port_device(0x0af0, 0x6791)},
442 {default_port_device(0x0af0, 0x6811)},
443 {default_port_device(0x0af0, 0x6911)},
444 {default_port_device(0x0af0, 0x6951)},
445 {default_port_device(0x0af0, 0x6971)},
446 {default_port_device(0x0af0, 0x7011)},
447 {default_port_device(0x0af0, 0x7031)},
448 {default_port_device(0x0af0, 0x7051)},
449 {default_port_device(0x0af0, 0x7071)},
450 {default_port_device(0x0af0, 0x7111)},
451 {default_port_device(0x0af0, 0x7211)},
452 {default_port_device(0x0af0, 0x7251)},
453 {default_port_device(0x0af0, 0x7271)},
454 {default_port_device(0x0af0, 0x7311)},
455 {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */
456 {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */
457 {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */
95eacee8 458 {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */
72dc1c09
GKH		 459 {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */
460 {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */
67dd8246 461 {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */
72dc1c09
GKH		 462 {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */
463 {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */
464 {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */
bab04c3a 465 {USB_DEVICE(0x0af0, 0x7701)},
ec157937 466 {USB_DEVICE(0x0af0, 0x7706)},
bab04c3a
DJB		 467 {USB_DEVICE(0x0af0, 0x7801)},
468 {USB_DEVICE(0x0af0, 0x7901)},
ec157937
JD		 469 {USB_DEVICE(0x0af0, 0x7A01)},
470 {USB_DEVICE(0x0af0, 0x7A05)},
9961d842
JD		 471 {USB_DEVICE(0x0af0, 0x8200)},
472 {USB_DEVICE(0x0af0, 0x8201)},
ec157937
JD		 473 {USB_DEVICE(0x0af0, 0x8300)},
474 {USB_DEVICE(0x0af0, 0x8302)},
475 {USB_DEVICE(0x0af0, 0x8304)},
476 {USB_DEVICE(0x0af0, 0x8400)},
dd7496f2
FA		 477 {USB_DEVICE(0x0af0, 0x8600)},
478 {USB_DEVICE(0x0af0, 0x8800)},
479 {USB_DEVICE(0x0af0, 0x8900)},
5c7bf2f4 480 {USB_DEVICE(0x0af0, 0x9000)},
9961d842 481 {USB_DEVICE(0x0af0, 0xd035)},
67dd8246 482 {USB_DEVICE(0x0af0, 0xd055)},
9961d842
JD		 483 {USB_DEVICE(0x0af0, 0xd155)},
484 {USB_DEVICE(0x0af0, 0xd255)},
485 {USB_DEVICE(0x0af0, 0xd057)},
486 {USB_DEVICE(0x0af0, 0xd157)},
487 {USB_DEVICE(0x0af0, 0xd257)},
488 {USB_DEVICE(0x0af0, 0xd357)},
ec157937
JD		 489 {USB_DEVICE(0x0af0, 0xd058)},
490 {USB_DEVICE(0x0af0, 0xc100)},
72dc1c09
GKH		 491 {}
492};
493MODULE_DEVICE_TABLE(usb, hso_ids);
494
495/* Sysfs attribute */
496static ssize_t hso_sysfs_show_porttype(struct device *dev,
497 struct device_attribute *attr,
498 char *buf)
499{
1aec5bdf 500 struct hso_device *hso_dev = dev_get_drvdata(dev);
72dc1c09
GKH		 501 char *port_name;
502
503 if (!hso_dev)
504 return 0;
505
506 switch (hso_dev->port_spec & HSO_PORT_MASK) {
507 case HSO_PORT_CONTROL:
508 port_name = "Control";
509 break;
510 case HSO_PORT_APP:
511 port_name = "Application";
512 break;
513 case HSO_PORT_APP2:
514 port_name = "Application2";
515 break;
516 case HSO_PORT_GPS:
517 port_name = "GPS";
518 break;
519 case HSO_PORT_GPS_CONTROL:
520 port_name = "GPS Control";
521 break;
522 case HSO_PORT_PCSC:
523 port_name = "PCSC";
524 break;
525 case HSO_PORT_DIAG:
526 port_name = "Diagnostic";
527 break;
528 case HSO_PORT_DIAG2:
529 port_name = "Diagnostic2";
530 break;
531 case HSO_PORT_MODEM:
532 port_name = "Modem";
533 break;
534 case HSO_PORT_NETWORK:
535 port_name = "Network";
536 break;
537 default:
538 port_name = "Unknown";
539 break;
540 }
541
542 return sprintf(buf, "%s\n", port_name);
543}
544static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL);
545
8ef5ba63
DJB		 546static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb)
547{
548 int idx;
549
550 for (idx = 0; idx < serial->num_rx_urbs; idx++)
551 if (serial->rx_urb[idx] == urb)
552 return idx;
553 dev_err(serial->parent->dev, "hso_urb_to_index failed\n");
554 return -1;
555}
556
72dc1c09
GKH		 557/* converts mux value to a port spec value */
558static u32 hso_mux_to_port(int mux)
559{
560 u32 result;
561
562 switch (mux) {
563 case 0x1:
564 result = HSO_PORT_CONTROL;
565 break;
566 case 0x2:
567 result = HSO_PORT_APP;
568 break;
569 case 0x4:
570 result = HSO_PORT_PCSC;
571 break;
572 case 0x8:
573 result = HSO_PORT_GPS;
574 break;
575 case 0x10:
576 result = HSO_PORT_APP2;
577 break;
578 default:
579 result = HSO_PORT_NO_PORT;
580 }
581 return result;
582}
583
584/* converts port spec value to a mux value */
585static u32 hso_port_to_mux(int port)
586{
587 u32 result;
588
589 switch (port & HSO_PORT_MASK) {
590 case HSO_PORT_CONTROL:
591 result = 0x0;
592 break;
593 case HSO_PORT_APP:
594 result = 0x1;
595 break;
596 case HSO_PORT_PCSC:
597 result = 0x2;
598 break;
599 case HSO_PORT_GPS:
600 result = 0x3;
601 break;
602 case HSO_PORT_APP2:
603 result = 0x4;
604 break;
605 default:
606 result = 0x0;
607 }
608 return result;
609}
610
611static struct hso_serial *get_serial_by_shared_int_and_type(
612 struct hso_shared_int *shared_int,
613 int mux)
614{
615 int i, port;
616
617 port = hso_mux_to_port(mux);
618
619 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
8e95a202
JP		 620 if (serial_table[i] &&
621 (dev2ser(serial_table[i])->shared_int == shared_int) &&
622 ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) {
72dc1c09
GKH		 623 return dev2ser(serial_table[i]);
624 }
625 }
626
627 return NULL;
628}
629
630static struct hso_serial *get_serial_by_index(unsigned index)
631{
0235f641 632 struct hso_serial *serial = NULL;
72dc1c09
GKH		 633 unsigned long flags;
634
72dc1c09 635 spin_lock_irqsave(&serial_table_lock, flags);
0235f641
GKH		 636 if (serial_table[index])
637 serial = dev2ser(serial_table[index]);
72dc1c09
GKH		 638 spin_unlock_irqrestore(&serial_table_lock, flags);
639
640 return serial;
641}
642
643static int get_free_serial_index(void)
644{
645 int index;
646 unsigned long flags;
647
648 spin_lock_irqsave(&serial_table_lock, flags);
649 for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) {
650 if (serial_table[index] == NULL) {
651 spin_unlock_irqrestore(&serial_table_lock, flags);
652 return index;
653 }
654 }
655 spin_unlock_irqrestore(&serial_table_lock, flags);
656
657 printk(KERN_ERR "%s: no free serial devices in table\n", __func__);
658 return -1;
659}
660
661static void set_serial_by_index(unsigned index, struct hso_serial *serial)
662{
663 unsigned long flags;
0235f641 664
72dc1c09
GKH		 665 spin_lock_irqsave(&serial_table_lock, flags);
666 if (serial)
667 serial_table[index] = serial->parent;
668 else
669 serial_table[index] = NULL;
670 spin_unlock_irqrestore(&serial_table_lock, flags);
671}
672
68a351c5
JD		 673static void handle_usb_error(int status, const char *function,
674 struct hso_device *hso_dev)
72dc1c09
GKH		 675{
676 char *explanation;
677
678 switch (status) {
679 case -ENODEV:
680 explanation = "no device";
681 break;
682 case -ENOENT:
683 explanation = "endpoint not enabled";
684 break;
685 case -EPIPE:
686 explanation = "endpoint stalled";
687 break;
688 case -ENOSPC:
689 explanation = "not enough bandwidth";
690 break;
691 case -ESHUTDOWN:
692 explanation = "device disabled";
693 break;
694 case -EHOSTUNREACH:
695 explanation = "device suspended";
696 break;
697 case -EINVAL:
698 case -EAGAIN:
699 case -EFBIG:
700 case -EMSGSIZE:
701 explanation = "internal error";
702 break;
68a351c5
JD		 703 case -EILSEQ:
704 case -EPROTO:
705 case -ETIME:
706 case -ETIMEDOUT:
707 explanation = "protocol error";
708 if (hso_dev)
709 schedule_work(&hso_dev->reset_device);
710 break;
72dc1c09
GKH		 711 default:
712 explanation = "unknown status";
713 break;
714 }
68a351c5
JD		 715
716 /* log a meaningful explanation of an USB status */
72dc1c09
GKH		 717 D1("%s: received USB status - %s (%d)", function, explanation, status);
718}
719
720/* Network interface functions */
721
722/* called when net interface is brought up by ifconfig */
723static int hso_net_open(struct net_device *net)
724{
725 struct hso_net *odev = netdev_priv(net);
726 unsigned long flags = 0;
727
728 if (!odev) {
729 dev_err(&net->dev, "No net device !\n");
730 return -ENODEV;
731 }
732
733 odev->skb_tx_buf = NULL;
734
735 /* setup environment */
736 spin_lock_irqsave(&odev->net_lock, flags);
737 odev->rx_parse_state = WAIT_IP;
738 odev->rx_buf_size = 0;
739 odev->rx_buf_missing = sizeof(struct iphdr);
740 spin_unlock_irqrestore(&odev->net_lock, flags);
741
72dc1c09
GKH		 742 /* We are up and running. */
743 set_bit(HSO_NET_RUNNING, &odev->flags);
889bd9b6 744 hso_start_net_device(odev->parent);
72dc1c09
GKH		 745
746 /* Tell the kernel we are ready to start receiving from it */
747 netif_start_queue(net);
748
749 return 0;
750}
751
752/* called when interface is brought down by ifconfig */
753static int hso_net_close(struct net_device *net)
754{
755 struct hso_net *odev = netdev_priv(net);
756
757 /* we don't need the queue anymore */
758 netif_stop_queue(net);
759 /* no longer running */
760 clear_bit(HSO_NET_RUNNING, &odev->flags);
761
762 hso_stop_net_device(odev->parent);
763
764 /* done */
765 return 0;
766}
767
768/* USB tells is xmit done, we should start the netqueue again */
769static void write_bulk_callback(struct urb *urb)
770{
771 struct hso_net *odev = urb->context;
772 int status = urb->status;
773
774 /* Sanity check */
775 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
776 dev_err(&urb->dev->dev, "%s: device not running\n", __func__);
777 return;
778 }
779
780 /* Do we still have a valid kernel network device? */
781 if (!netif_device_present(odev->net)) {
782 dev_err(&urb->dev->dev, "%s: net device not present\n",
783 __func__);
784 return;
785 }
786
787 /* log status, but don't act on it, we don't need to resubmit anything
788 * anyhow */
789 if (status)
68a351c5 790 handle_usb_error(status, __func__, odev->parent);
72dc1c09
GKH		 791
792 hso_put_activity(odev->parent);
793
794 /* Tell the network interface we are ready for another frame */
795 netif_wake_queue(odev->net);
796}
797
798/* called by kernel when we need to transmit a packet */
25a79c41
SH		 799static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb,
800 struct net_device *net)
72dc1c09
GKH		 801{
802 struct hso_net *odev = netdev_priv(net);
803 int result;
804
805 /* Tell the kernel, "No more frames 'til we are done with this one." */
806 netif_stop_queue(net);
807 if (hso_get_activity(odev->parent) == -EAGAIN) {
808 odev->skb_tx_buf = skb;
6ed10654 809 return NETDEV_TX_OK;
72dc1c09
GKH		 810 }
811
812 /* log if asked */
813 DUMP1(skb->data, skb->len);
814 /* Copy it from kernel memory to OUR memory */
815 memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len);
816 D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE);
817
818 /* Fill in the URB for shipping it out. */
819 usb_fill_bulk_urb(odev->mux_bulk_tx_urb,
820 odev->parent->usb,
821 usb_sndbulkpipe(odev->parent->usb,
822 odev->out_endp->
823 bEndpointAddress & 0x7F),
824 odev->mux_bulk_tx_buf, skb->len, write_bulk_callback,
825 odev);
826
827 /* Deal with the Zero Length packet problem, I hope */
828 odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET;
829
830 /* Send the URB on its merry way. */
831 result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC);
832 if (result) {
833 dev_warn(&odev->parent->interface->dev,
8a5c9c49 834 "failed mux_bulk_tx_urb %d\n", result);
72dc1c09
GKH		 835 net->stats.tx_errors++;
836 netif_start_queue(net);
837 } else {
838 net->stats.tx_packets++;
839 net->stats.tx_bytes += skb->len;
72dc1c09
GKH		 840 }
841 dev_kfree_skb(skb);
842 /* we're done */
5b2c4b97 843 return NETDEV_TX_OK;
72dc1c09
GKH		 844}
845
0fc0b732 846static const struct ethtool_ops ops = {
72dc1c09
GKH		 847 .get_link = ethtool_op_get_link
848};
849
850/* called when a packet did not ack after watchdogtimeout */
851static void hso_net_tx_timeout(struct net_device *net)
852{
853 struct hso_net *odev = netdev_priv(net);
854
855 if (!odev)
856 return;
857
858 /* Tell syslog we are hosed. */
859 dev_warn(&net->dev, "Tx timed out.\n");
860
861 /* Tear the waiting frame off the list */
8e95a202
JP		 862 if (odev->mux_bulk_tx_urb &&
863 (odev->mux_bulk_tx_urb->status == -EINPROGRESS))
72dc1c09
GKH		 864 usb_unlink_urb(odev->mux_bulk_tx_urb);
865
866 /* Update statistics */
867 net->stats.tx_errors++;
868}
869
870/* make a real packet from the received USB buffer */
871static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt,
872 unsigned int count, unsigned char is_eop)
873{
874 unsigned short temp_bytes;
875 unsigned short buffer_offset = 0;
876 unsigned short frame_len;
877 unsigned char *tmp_rx_buf;
878
879 /* log if needed */
880 D1("Rx %d bytes", count);
881 DUMP(ip_pkt, min(128, (int)count));
882
883 while (count) {
884 switch (odev->rx_parse_state) {
885 case WAIT_IP:
886 /* waiting for IP header. */
887 /* wanted bytes - size of ip header */
888 temp_bytes =
889 (count <
890 odev->rx_buf_missing) ? count : odev->
891 rx_buf_missing;
892
893 memcpy(((unsigned char *)(&odev->rx_ip_hdr)) +
894 odev->rx_buf_size, ip_pkt + buffer_offset,
895 temp_bytes);
896
897 odev->rx_buf_size += temp_bytes;
898 buffer_offset += temp_bytes;
899 odev->rx_buf_missing -= temp_bytes;
900 count -= temp_bytes;
901
902 if (!odev->rx_buf_missing) {
903 /* header is complete allocate an sk_buffer and
904 * continue to WAIT_DATA */
905 frame_len = ntohs(odev->rx_ip_hdr.tot_len);
906
907 if ((frame_len > DEFAULT_MRU) ||
908 (frame_len < sizeof(struct iphdr))) {
909 dev_err(&odev->net->dev,
910 "Invalid frame (%d) length\n",
911 frame_len);
912 odev->rx_parse_state = WAIT_SYNC;
913 continue;
914 }
915 /* Allocate an sk_buff */
d65a68a8
PZ		 916 odev->skb_rx_buf = netdev_alloc_skb(odev->net,
917 frame_len);
72dc1c09
GKH		 918 if (!odev->skb_rx_buf) {
919 /* We got no receive buffer. */
920 D1("could not allocate memory");
921 odev->rx_parse_state = WAIT_SYNC;
922 return;
923 }
72dc1c09
GKH		 924
925 /* Copy what we got so far. make room for iphdr
926 * after tail. */
927 tmp_rx_buf =
928 skb_put(odev->skb_rx_buf,
929 sizeof(struct iphdr));
930 memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr),
931 sizeof(struct iphdr));
932
933 /* ETH_HLEN */
934 odev->rx_buf_size = sizeof(struct iphdr);
935
936 /* Filip actually use .tot_len */
937 odev->rx_buf_missing =
938 frame_len - sizeof(struct iphdr);
939 odev->rx_parse_state = WAIT_DATA;
940 }
941 break;
942
943 case WAIT_DATA:
944 temp_bytes = (count < odev->rx_buf_missing)
945 ? count : odev->rx_buf_missing;
946
947 /* Copy the rest of the bytes that are left in the
948 * buffer into the waiting sk_buf. */
949 /* Make room for temp_bytes after tail. */
950 tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes);
951 memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes);
952
953 odev->rx_buf_missing -= temp_bytes;
954 count -= temp_bytes;
955 buffer_offset += temp_bytes;
956 odev->rx_buf_size += temp_bytes;
957 if (!odev->rx_buf_missing) {
958 /* Packet is complete. Inject into stack. */
959 /* We have IP packet here */
09640e63 960 odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP);
72dc1c09
GKH		 961 /* don't check it */
962 odev->skb_rx_buf->ip_summed =
963 CHECKSUM_UNNECESSARY;
964
965 skb_reset_mac_header(odev->skb_rx_buf);
966
967 /* Ship it off to the kernel */
968 netif_rx(odev->skb_rx_buf);
969 /* No longer our buffer. */
970 odev->skb_rx_buf = NULL;
971
972 /* update out statistics */
973 odev->net->stats.rx_packets++;
974
975 odev->net->stats.rx_bytes += odev->rx_buf_size;
976
977 odev->rx_buf_size = 0;
978 odev->rx_buf_missing = sizeof(struct iphdr);
979 odev->rx_parse_state = WAIT_IP;
980 }
981 break;
982
983 case WAIT_SYNC:
984 D1(" W_S");
985 count = 0;
986 break;
987 default:
988 D1(" ");
989 count--;
990 break;
991 }
992 }
993
994 /* Recovery mechanism for WAIT_SYNC state. */
995 if (is_eop) {
996 if (odev->rx_parse_state == WAIT_SYNC) {
997 odev->rx_parse_state = WAIT_IP;
998 odev->rx_buf_size = 0;
999 odev->rx_buf_missing = sizeof(struct iphdr);
1000 }
1001 }
1002}
1003
1004/* Moving data from usb to kernel (in interrupt state) */
1005static void read_bulk_callback(struct urb *urb)
1006{
1007 struct hso_net *odev = urb->context;
1008 struct net_device *net;
1009 int result;
1010 int status = urb->status;
1011
1012 /* is al ok? (Filip: Who's Al ?) */
1013 if (status) {
68a351c5 1014 handle_usb_error(status, __func__, odev->parent);
72dc1c09
GKH		 1015 return;
1016 }
1017
1018 /* Sanity check */
1019 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
1020 D1("BULK IN callback but driver is not active!");
1021 return;
1022 }
1023 usb_mark_last_busy(urb->dev);
1024
1025 net = odev->net;
1026
1027 if (!netif_device_present(net)) {
1028 /* Somebody killed our network interface... */
1029 return;
1030 }
1031
1032 if (odev->parent->port_spec & HSO_INFO_CRC_BUG) {
1033 u32 rest;
1034 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
d9ced80d
JD		 1035 rest = urb->actual_length %
1036 le16_to_cpu(odev->in_endp->wMaxPacketSize);
8e95a202
JP		 1037 if (((rest == 5) || (rest == 6)) &&
1038 !memcmp(((u8 *) urb->transfer_buffer) +
1039 urb->actual_length - 4, crc_check, 4)) {
72dc1c09
GKH		 1040 urb->actual_length -= 4;
1041 }
1042 }
1043
1044 /* do we even have a packet? */
1045 if (urb->actual_length) {
1046 /* Handle the IP stream, add header and push it onto network
1047 * stack if the packet is complete. */
1048 spin_lock(&odev->net_lock);
1049 packetizeRx(odev, urb->transfer_buffer, urb->actual_length,
1050 (urb->transfer_buffer_length >
1051 urb->actual_length) ? 1 : 0);
1052 spin_unlock(&odev->net_lock);
1053 }
1054
1055 /* We are done with this URB, resubmit it. Prep the USB to wait for
1056 * another frame. Reuse same as received. */
1057 usb_fill_bulk_urb(urb,
1058 odev->parent->usb,
1059 usb_rcvbulkpipe(odev->parent->usb,
1060 odev->in_endp->
1061 bEndpointAddress & 0x7F),
1062 urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE,
1063 read_bulk_callback, odev);
1064
1065 /* Give this to the USB subsystem so it can tell us when more data
1066 * arrives. */
1067 result = usb_submit_urb(urb, GFP_ATOMIC);
1068 if (result)
1069 dev_warn(&odev->parent->interface->dev,
8a5c9c49 1070 "%s failed submit mux_bulk_rx_urb %d\n", __func__,
72dc1c09
GKH		 1071 result);
1072}
1073
1074/* Serial driver functions */
1075
ac9720c3 1076static void hso_init_termios(struct ktermios *termios)
72dc1c09 1077{
72dc1c09
GKH		 1078 /*
1079 * The default requirements for this device are:
1080 */
72dc1c09
GKH		 1081 termios->c_iflag &=
1082 ~(IGNBRK /* disable ignore break */
1083 | BRKINT /* disable break causes interrupt */
1084 | PARMRK /* disable mark parity errors */
1085 | ISTRIP /* disable clear high bit of input characters */
1086 | INLCR /* disable translate NL to CR */
1087 | IGNCR /* disable ignore CR */
1088 | ICRNL /* disable translate CR to NL */
1089 | IXON); /* disable enable XON/XOFF flow control */
1090
1091 /* disable postprocess output characters */
1092 termios->c_oflag &= ~OPOST;
1093
1094 termios->c_lflag &=
1095 ~(ECHO /* disable echo input characters */
1096 | ECHONL /* disable echo new line */
1097 | ICANON /* disable erase, kill, werase, and rprnt
1098 special characters */
1099 | ISIG /* disable interrupt, quit, and suspend special
1100 characters */
1101 | IEXTEN); /* disable non-POSIX special characters */
1102
1103 termios->c_cflag &=
1104 ~(CSIZE /* no size */
1105 | PARENB /* disable parity bit */
1106 | CBAUD /* clear current baud rate */
1107 | CBAUDEX); /* clear current buad rate */
1108
1109 termios->c_cflag |= CS8; /* character size 8 bits */
1110
1111 /* baud rate 115200 */
ac9720c3
AC		 1112 tty_termios_encode_baud_rate(termios, 115200, 115200);
1113}
1114
1115static void _hso_serial_set_termios(struct tty_struct *tty,
1116 struct ktermios *old)
1117{
1118 struct hso_serial *serial = get_serial_by_tty(tty);
1119 struct ktermios *termios;
1120
1121 if (!serial) {
1122 printk(KERN_ERR "%s: no tty structures", __func__);
1123 return;
1124 }
1125
1126 D4("port %d", serial->minor);
72dc1c09
GKH		 1127
1128 /*
ac9720c3 1129 * Fix up unsupported bits
72dc1c09 1130 */
ac9720c3
AC		 1131 termios = tty->termios;
1132 termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */
1133
1134 termios->c_cflag &=
1135 ~(CSIZE /* no size */
1136 | PARENB /* disable parity bit */
1137 | CBAUD /* clear current baud rate */
1138 | CBAUDEX); /* clear current buad rate */
1139
1140 termios->c_cflag |= CS8; /* character size 8 bits */
1141
1142 /* baud rate 115200 */
1143 tty_encode_baud_rate(tty, 115200, 115200);
72dc1c09
GKH		 1144}
1145
8ef5ba63
DJB		 1146static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb)
1147{
1148 int result;
8ef5ba63
DJB		 1149 /* We are done with this URB, resubmit it. Prep the USB to wait for
1150 * another frame */
1151 usb_fill_bulk_urb(urb, serial->parent->usb,
1152 usb_rcvbulkpipe(serial->parent->usb,
1153 serial->in_endp->
1154 bEndpointAddress & 0x7F),
1155 urb->transfer_buffer, serial->rx_data_length,
1156 hso_std_serial_read_bulk_callback, serial);
1157 /* Give this to the USB subsystem so it can tell us when more data
1158 * arrives. */
1159 result = usb_submit_urb(urb, GFP_ATOMIC);
1160 if (result) {
1161 dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n",
1162 __func__, result);
1163 }
1164}
1165
1166
1167
1168
1169static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial)
1170{
1171 int count;
1172 struct urb *curr_urb;
1173
1174 while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) {
1175 curr_urb = serial->rx_urb[serial->curr_rx_urb_idx];
1176 count = put_rxbuf_data(curr_urb, serial);
1177 if (count == -1)
1178 return;
1179 if (count == 0) {
1180 serial->curr_rx_urb_idx++;
1181 if (serial->curr_rx_urb_idx >= serial->num_rx_urbs)
1182 serial->curr_rx_urb_idx = 0;
1183 hso_resubmit_rx_bulk_urb(serial, curr_urb);
1184 }
1185 }
1186}
1187
1188static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
1189{
1190 int count = 0;
1191 struct urb *urb;
1192
1193 urb = serial->rx_urb[0];
1194 if (serial->open_count > 0) {
1195 count = put_rxbuf_data(urb, serial);
1196 if (count == -1)
1197 return;
1198 }
1199 /* Re issue a read as long as we receive data. */
1200
1201 if (count == 0 && ((urb->actual_length != 0) ||
1202 (serial->rx_state == RX_PENDING))) {
1203 serial->rx_state = RX_SENT;
1204 hso_mux_serial_read(serial);
1205 } else
1206 serial->rx_state = RX_IDLE;
1207}
1208
1209
1210/* read callback for Diag and CS port */
1211static void hso_std_serial_read_bulk_callback(struct urb *urb)
1212{
1213 struct hso_serial *serial = urb->context;
1214 int status = urb->status;
1215
1216 /* sanity check */
1217 if (!serial) {
1218 D1("serial == NULL");
1219 return;
1220 } else if (status) {
68a351c5 1221 handle_usb_error(status, __func__, serial->parent);
8ef5ba63
DJB		 1222 return;
1223 }
1224
1225 D4("\n--- Got serial_read_bulk callback %02x ---", status);
1226 D1("Actual length = %d\n", urb->actual_length);
1227 DUMP1(urb->transfer_buffer, urb->actual_length);
1228
1229 /* Anyone listening? */
1230 if (serial->open_count == 0)
1231 return;
1232
1233 if (status == 0) {
1234 if (serial->parent->port_spec & HSO_INFO_CRC_BUG) {
1235 u32 rest;
1236 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1237 rest =
1238 urb->actual_length %
d9ced80d 1239 le16_to_cpu(serial->in_endp->wMaxPacketSize);
8e95a202
JP		 1240 if (((rest == 5) || (rest == 6)) &&
1241 !memcmp(((u8 *) urb->transfer_buffer) +
1242 urb->actual_length - 4, crc_check, 4)) {
8ef5ba63
DJB		 1243 urb->actual_length -= 4;
1244 }
1245 }
1246 /* Valid data, handle RX data */
1247 spin_lock(&serial->serial_lock);
1248 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1;
1249 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1250 spin_unlock(&serial->serial_lock);
1251 } else if (status == -ENOENT || status == -ECONNRESET) {
1252 /* Unlinked - check for throttled port. */
1253 D2("Port %d, successfully unlinked urb", serial->minor);
1254 spin_lock(&serial->serial_lock);
1255 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
1256 hso_resubmit_rx_bulk_urb(serial, urb);
1257 spin_unlock(&serial->serial_lock);
1258 } else {
1259 D2("Port %d, status = %d for read urb", serial->minor, status);
1260 return;
1261 }
1262}
1263
1264/*
1265 * This needs to be a tasklet otherwise we will
1266 * end up recursively calling this function.
1267 */
0227abc9 1268static void hso_unthrottle_tasklet(struct hso_serial *serial)
8ef5ba63
DJB		 1269{
1270 unsigned long flags;
1271
1272 spin_lock_irqsave(&serial->serial_lock, flags);
1273 if ((serial->parent->port_spec & HSO_INTF_MUX))
1274 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
1275 else
1276 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1277 spin_unlock_irqrestore(&serial->serial_lock, flags);
1278}
1279
1280static void hso_unthrottle(struct tty_struct *tty)
1281{
1282 struct hso_serial *serial = get_serial_by_tty(tty);
1283
1284 tasklet_hi_schedule(&serial->unthrottle_tasklet);
1285}
1286
0227abc9 1287static void hso_unthrottle_workfunc(struct work_struct *work)
8ef5ba63
DJB		 1288{
1289 struct hso_serial *serial =
1290 container_of(work, struct hso_serial,
1291 retry_unthrottle_workqueue);
1292 hso_unthrottle_tasklet(serial);
1293}
1294
72dc1c09
GKH		 1295/* open the requested serial port */
1296static int hso_serial_open(struct tty_struct *tty, struct file *filp)
1297{
1298 struct hso_serial *serial = get_serial_by_index(tty->index);
ab153d84 1299 int result;
72dc1c09
GKH		 1300
1301 /* sanity check */
1302 if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) {
e136e303 1303 WARN_ON(1);
72dc1c09
GKH		 1304 tty->driver_data = NULL;
1305 D1("Failed to open port");
1306 return -ENODEV;
1307 }
1308
ab153d84 1309 mutex_lock(&serial->parent->mutex);
ab153d84
DM		 1310 result = usb_autopm_get_interface(serial->parent->interface);
1311 if (result < 0)
72dc1c09
GKH		 1312 goto err_out;
1313
1314 D1("Opening %d", serial->minor);
1315 kref_get(&serial->parent->ref);
1316
1317 /* setup */
e136e303 1318 spin_lock_irq(&serial->serial_lock);
72dc1c09 1319 tty->driver_data = serial;
fe41cbb1 1320 tty_kref_put(serial->tty);
e136e303
AC		 1321 serial->tty = tty_kref_get(tty);
1322 spin_unlock_irq(&serial->serial_lock);
72dc1c09 1323
2f9889a2
DM		 1324 /* check for port already opened, if not set the termios */
1325 serial->open_count++;
72dc1c09 1326 if (serial->open_count == 1) {
8ef5ba63 1327 serial->rx_state = RX_IDLE;
72dc1c09
GKH		 1328 /* Force default termio settings */
1329 _hso_serial_set_termios(tty, NULL);
8ef5ba63
DJB		 1330 tasklet_init(&serial->unthrottle_tasklet,
1331 (void (*)(unsigned long))hso_unthrottle_tasklet,
1332 (unsigned long)serial);
1333 INIT_WORK(&serial->retry_unthrottle_workqueue,
1334 hso_unthrottle_workfunc);
ab153d84
DM		 1335 result = hso_start_serial_device(serial->parent, GFP_KERNEL);
1336 if (result) {
72dc1c09
GKH		 1337 hso_stop_serial_device(serial->parent);
1338 serial->open_count--;
ab153d84 1339 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09
GKH		 1340 }
1341 } else {
1342 D1("Port was already open");
1343 }
1344
1345 usb_autopm_put_interface(serial->parent->interface);
1346
1347 /* done */
ab153d84 1348 if (result)
72dc1c09
GKH		 1349 hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0);
1350err_out:
ab153d84
DM		 1351 mutex_unlock(&serial->parent->mutex);
1352 return result;
72dc1c09
GKH		 1353}
1354
1355/* close the requested serial port */
1356static void hso_serial_close(struct tty_struct *tty, struct file *filp)
1357{
1358 struct hso_serial *serial = tty->driver_data;
1359 u8 usb_gone;
1360
1361 D1("Closing serial port");
1362
e136e303
AC		 1363 /* Open failed, no close cleanup required */
1364 if (serial == NULL)
1365 return;
1366
ab153d84 1367 mutex_lock(&serial->parent->mutex);
72dc1c09
GKH		 1368 usb_gone = serial->parent->usb_gone;
1369
1370 if (!usb_gone)
1371 usb_autopm_get_interface(serial->parent->interface);
1372
1373 /* reset the rts and dtr */
1374 /* do the actual close */
1375 serial->open_count--;
dcfcb256 1376
72dc1c09 1377 if (serial->open_count <= 0) {
72dc1c09 1378 serial->open_count = 0;
e136e303
AC		 1379 spin_lock_irq(&serial->serial_lock);
1380 if (serial->tty == tty) {
72dc1c09
GKH		 1381 serial->tty->driver_data = NULL;
1382 serial->tty = NULL;
e136e303 1383 tty_kref_put(tty);
72dc1c09 1384 }
e136e303 1385 spin_unlock_irq(&serial->serial_lock);
72dc1c09
GKH		 1386 if (!usb_gone)
1387 hso_stop_serial_device(serial->parent);
8ef5ba63
DJB		 1388 tasklet_kill(&serial->unthrottle_tasklet);
1389 cancel_work_sync(&serial->retry_unthrottle_workqueue);
72dc1c09 1390 }
8ef5ba63 1391
72dc1c09
GKH		 1392 if (!usb_gone)
1393 usb_autopm_put_interface(serial->parent->interface);
ab153d84
DM		 1394
1395 mutex_unlock(&serial->parent->mutex);
dcfcb256
AK		 1396
1397 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09
GKH		 1398}
1399
1400/* close the requested serial port */
1401static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf,
1402 int count)
1403{
1404 struct hso_serial *serial = get_serial_by_tty(tty);
1405 int space, tx_bytes;
1406 unsigned long flags;
1407
1408 /* sanity check */
1409 if (serial == NULL) {
1410 printk(KERN_ERR "%s: serial is NULL\n", __func__);
1411 return -ENODEV;
1412 }
1413
1414 spin_lock_irqsave(&serial->serial_lock, flags);
1415
1416 space = serial->tx_data_length - serial->tx_buffer_count;
1417 tx_bytes = (count < space) ? count : space;
1418
1419 if (!tx_bytes)
1420 goto out;
1421
1422 memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes);
1423 serial->tx_buffer_count += tx_bytes;
1424
1425out:
1426 spin_unlock_irqrestore(&serial->serial_lock, flags);
1427
1428 hso_kick_transmit(serial);
1429 /* done */
1430 return tx_bytes;
1431}
1432
1433/* how much room is there for writing */
1434static int hso_serial_write_room(struct tty_struct *tty)
1435{
1436 struct hso_serial *serial = get_serial_by_tty(tty);
1437 int room;
1438 unsigned long flags;
1439
1440 spin_lock_irqsave(&serial->serial_lock, flags);
1441 room = serial->tx_data_length - serial->tx_buffer_count;
1442 spin_unlock_irqrestore(&serial->serial_lock, flags);
1443
1444 /* return free room */
1445 return room;
1446}
1447
1448/* setup the term */
1449static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
1450{
1451 struct hso_serial *serial = get_serial_by_tty(tty);
1452 unsigned long flags;
1453
1454 if (old)
1455 D5("Termios called with: cflags new[%d] - old[%d]",
1456 tty->termios->c_cflag, old->c_cflag);
1457
1458 /* the actual setup */
1459 spin_lock_irqsave(&serial->serial_lock, flags);
1460 if (serial->open_count)
1461 _hso_serial_set_termios(tty, old);
1462 else
1463 tty->termios = old;
1464 spin_unlock_irqrestore(&serial->serial_lock, flags);
1465
1466 /* done */
72dc1c09
GKH		 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) {
68a351c5 1525 handle_usb_error(status, __func__, serial->parent);
542f5482
DJB		 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 */
0bca1b91
AC		 1639static int hso_get_count(struct tty_struct *tty,
1640 struct serial_icounter_struct *icount)
542f5482 1641{
542f5482 1642 struct uart_icount cnow;
0bca1b91 1643 struct hso_serial *serial = get_serial_by_tty(tty);
542f5482
DJB		 1644 struct hso_tiocmget *tiocmget = serial->tiocmget;
1645
7011e660
DR		 1646 memset(&icount, 0, sizeof(struct serial_icounter_struct));
1647
542f5482
DJB		 1648 if (!tiocmget)
1649 return -ENOENT;
1650 spin_lock_irq(&serial->serial_lock);
1651 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1652 spin_unlock_irq(&serial->serial_lock);
1653
0bca1b91
AC		 1654 icount->cts = cnow.cts;
1655 icount->dsr = cnow.dsr;
1656 icount->rng = cnow.rng;
1657 icount->dcd = cnow.dcd;
1658 icount->rx = cnow.rx;
1659 icount->tx = cnow.tx;
1660 icount->frame = cnow.frame;
1661 icount->overrun = cnow.overrun;
1662 icount->parity = cnow.parity;
1663 icount->brk = cnow.brk;
1664 icount->buf_overrun = cnow.buf_overrun;
542f5482 1665
0bca1b91 1666 return 0;
542f5482
DJB		 1667}
1668
72dc1c09
GKH		 1669
1670static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file)
1671{
542f5482 1672 int retval;
72dc1c09 1673 struct hso_serial *serial = get_serial_by_tty(tty);
542f5482
DJB		 1674 struct hso_tiocmget *tiocmget;
1675 u16 UART_state_bitmap;
72dc1c09
GKH		 1676
1677 /* sanity check */
1678 if (!serial) {
1679 D1("no tty structures");
1680 return -EINVAL;
1681 }
542f5482
DJB		 1682 spin_lock_irq(&serial->serial_lock);
1683 retval = ((serial->rts_state) ? TIOCM_RTS : 0) |
72dc1c09 1684 ((serial->dtr_state) ? TIOCM_DTR : 0);
542f5482
DJB		 1685 tiocmget = serial->tiocmget;
1686 if (tiocmget) {
1687
1688 UART_state_bitmap = le16_to_cpu(
1689 tiocmget->prev_UART_state_bitmap);
1690 if (UART_state_bitmap & B_RING_SIGNAL)
1691 retval |= TIOCM_RNG;
1692 if (UART_state_bitmap & B_RX_CARRIER)
1693 retval |= TIOCM_CD;
1694 if (UART_state_bitmap & B_TX_CARRIER)
1695 retval |= TIOCM_DSR;
1696 }
1697 spin_unlock_irq(&serial->serial_lock);
1698 return retval;
72dc1c09
GKH		 1699}
1700
1701static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
1702 unsigned int set, unsigned int clear)
1703{
1704 int val = 0;
1705 unsigned long flags;
1706 int if_num;
1707 struct hso_serial *serial = get_serial_by_tty(tty);
1708
1709 /* sanity check */
1710 if (!serial) {
1711 D1("no tty structures");
1712 return -EINVAL;
1713 }
0e0367e9
JD		 1714
1715 if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM)
1716 return -EINVAL;
1717
72dc1c09
GKH		 1718 if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber;
1719
1720 spin_lock_irqsave(&serial->serial_lock, flags);
1721 if (set & TIOCM_RTS)
1722 serial->rts_state = 1;
1723 if (set & TIOCM_DTR)
1724 serial->dtr_state = 1;
1725
1726 if (clear & TIOCM_RTS)
1727 serial->rts_state = 0;
1728 if (clear & TIOCM_DTR)
1729 serial->dtr_state = 0;
1730
1731 if (serial->dtr_state)
1732 val |= 0x01;
1733 if (serial->rts_state)
1734 val |= 0x02;
1735
1736 spin_unlock_irqrestore(&serial->serial_lock, flags);
1737
1738 return usb_control_msg(serial->parent->usb,
1739 usb_rcvctrlpipe(serial->parent->usb, 0), 0x22,
1740 0x21, val, if_num, NULL, 0,
1741 USB_CTRL_SET_TIMEOUT);
1742}
1743
542f5482
DJB		 1744static int hso_serial_ioctl(struct tty_struct *tty, struct file *file,
1745 unsigned int cmd, unsigned long arg)
1746{
1747 struct hso_serial *serial = get_serial_by_tty(tty);
1748 void __user *uarg = (void __user *)arg;
1749 int ret = 0;
1750 D4("IOCTL cmd: %d, arg: %ld", cmd, arg);
1751
1752 if (!serial)
1753 return -ENODEV;
1754 switch (cmd) {
1755 case TIOCMIWAIT:
1756 ret = hso_wait_modem_status(serial, arg);
1757 break;
542f5482
DJB		 1758 default:
1759 ret = -ENOIOCTLCMD;
1760 break;
1761 }
1762 return ret;
1763}
1764
1765
72dc1c09
GKH		 1766/* starts a transmit */
1767static void hso_kick_transmit(struct hso_serial *serial)
1768{
1769 u8 *temp;
1770 unsigned long flags;
1771 int res;
1772
1773 spin_lock_irqsave(&serial->serial_lock, flags);
1774 if (!serial->tx_buffer_count)
1775 goto out;
1776
1777 if (serial->tx_urb_used)
1778 goto out;
1779
1780 /* Wakeup USB interface if necessary */
1781 if (hso_get_activity(serial->parent) == -EAGAIN)
1782 goto out;
1783
1784 /* Switch pointers around to avoid memcpy */
1785 temp = serial->tx_buffer;
1786 serial->tx_buffer = serial->tx_data;
1787 serial->tx_data = temp;
1788 serial->tx_data_count = serial->tx_buffer_count;
1789 serial->tx_buffer_count = 0;
1790
1791 /* If temp is set, it means we switched buffers */
1792 if (temp && serial->write_data) {
1793 res = serial->write_data(serial);
1794 if (res >= 0)
1795 serial->tx_urb_used = 1;
1796 }
1797out:
1798 spin_unlock_irqrestore(&serial->serial_lock, flags);
1799}
1800
1801/* make a request (for reading and writing data to muxed serial port) */
1802static int mux_device_request(struct hso_serial *serial, u8 type, u16 port,
1803 struct urb *ctrl_urb,
1804 struct usb_ctrlrequest *ctrl_req,
1805 u8 *ctrl_urb_data, u32 size)
1806{
1807 int result;
1808 int pipe;
1809
1810 /* Sanity check */
1811 if (!serial || !ctrl_urb || !ctrl_req) {
1812 printk(KERN_ERR "%s: Wrong arguments\n", __func__);
1813 return -EINVAL;
1814 }
1815
1816 /* initialize */
1817 ctrl_req->wValue = 0;
b74f62c1
DJB		 1818 ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port));
1819 ctrl_req->wLength = cpu_to_le16(size);
72dc1c09
GKH		 1820
1821 if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) {
1822 /* Reading command */
1823 ctrl_req->bRequestType = USB_DIR_IN |
1824 USB_TYPE_OPTION_VENDOR |
1825 USB_RECIP_INTERFACE;
1826 ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
1827 pipe = usb_rcvctrlpipe(serial->parent->usb, 0);
1828 } else {
1829 /* Writing command */
1830 ctrl_req->bRequestType = USB_DIR_OUT |
1831 USB_TYPE_OPTION_VENDOR |
1832 USB_RECIP_INTERFACE;
1833 ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND;
1834 pipe = usb_sndctrlpipe(serial->parent->usb, 0);
1835 }
1836 /* syslog */
1837 D2("%s command (%02x) len: %d, port: %d",
1838 type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write",
1839 ctrl_req->bRequestType, ctrl_req->wLength, port);
1840
1841 /* Load ctrl urb */
1842 ctrl_urb->transfer_flags = 0;
1843 usb_fill_control_urb(ctrl_urb,
1844 serial->parent->usb,
1845 pipe,
1846 (u8 *) ctrl_req,
1847 ctrl_urb_data, size, ctrl_callback, serial);
1848 /* Send it on merry way */
1849 result = usb_submit_urb(ctrl_urb, GFP_ATOMIC);
1850 if (result) {
1851 dev_err(&ctrl_urb->dev->dev,
8a5c9c49 1852 "%s failed submit ctrl_urb %d type %d\n", __func__,
72dc1c09
GKH		 1853 result, type);
1854 return result;
1855 }
1856
1857 /* done */
1858 return size;
1859}
1860
1861/* called by intr_callback when read occurs */
1862static int hso_mux_serial_read(struct hso_serial *serial)
1863{
1864 if (!serial)
1865 return -EINVAL;
1866
1867 /* clean data */
1868 memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE);
1869 /* make the request */
1870
1871 if (serial->num_rx_urbs != 1) {
1872 dev_err(&serial->parent->interface->dev,
1873 "ERROR: mux'd reads with multiple buffers "
1874 "not possible\n");
1875 return 0;
1876 }
1877 return mux_device_request(serial,
1878 USB_CDC_GET_ENCAPSULATED_RESPONSE,
1879 serial->parent->port_spec & HSO_PORT_MASK,
1880 serial->rx_urb[0],
1881 &serial->ctrl_req_rx,
1882 serial->rx_data[0], serial->rx_data_length);
1883}
1884
1885/* used for muxed serial port callback (muxed serial read) */
1886static void intr_callback(struct urb *urb)
1887{
1888 struct hso_shared_int *shared_int = urb->context;
1889 struct hso_serial *serial;
1890 unsigned char *port_req;
1891 int status = urb->status;
1892 int i;
1893
1894 usb_mark_last_busy(urb->dev);
1895
1896 /* sanity check */
1897 if (!shared_int)
1898 return;
1899
1900 /* status check */
1901 if (status) {
68a351c5 1902 handle_usb_error(status, __func__, NULL);
72dc1c09
GKH		 1903 return;
1904 }
1905 D4("\n--- Got intr callback 0x%02X ---", status);
1906
1907 /* what request? */
1908 port_req = urb->transfer_buffer;
1909 D4(" port_req = 0x%.2X\n", *port_req);
1910 /* loop over all muxed ports to find the one sending this */
1911 for (i = 0; i < 8; i++) {
1912 /* max 8 channels on MUX */
1913 if (*port_req & (1 << i)) {
1914 serial = get_serial_by_shared_int_and_type(shared_int,
1915 (1 << i));
1916 if (serial != NULL) {
1917 D1("Pending read interrupt on port %d\n", i);
8ef5ba63 1918 spin_lock(&serial->serial_lock);
f4763e96
JD		 1919 if (serial->rx_state == RX_IDLE &&
1920 serial->open_count > 0) {
72dc1c09
GKH		 1921 /* Setup and send a ctrl req read on
1922 * port i */
f4763e96 1923 if (!serial->rx_urb_filled[0]) {
8ef5ba63
DJB		 1924 serial->rx_state = RX_SENT;
1925 hso_mux_serial_read(serial);
1926 } else
1927 serial->rx_state = RX_PENDING;
72dc1c09 1928 } else {
f4763e96
JD		 1929 D1("Already a read pending on "
1930 "port %d or port not open\n", i);
72dc1c09 1931 }
8ef5ba63 1932 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 1933 }
1934 }
1935 }
1936 /* Resubmit interrupt urb */
1937 hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC);
1938}
1939
1940/* called for writing to muxed serial port */
1941static int hso_mux_serial_write_data(struct hso_serial *serial)
1942{
1943 if (NULL == serial)
1944 return -EINVAL;
1945
1946 return mux_device_request(serial,
1947 USB_CDC_SEND_ENCAPSULATED_COMMAND,
1948 serial->parent->port_spec & HSO_PORT_MASK,
1949 serial->tx_urb,
1950 &serial->ctrl_req_tx,
1951 serial->tx_data, serial->tx_data_count);
1952}
1953
1954/* write callback for Diag and CS port */
1955static void hso_std_serial_write_bulk_callback(struct urb *urb)
1956{
1957 struct hso_serial *serial = urb->context;
1958 int status = urb->status;
e136e303 1959 struct tty_struct *tty;
72dc1c09
GKH		 1960
1961 /* sanity check */
1962 if (!serial) {
1963 D1("serial == NULL");
1964 return;
1965 }
1966
1967 spin_lock(&serial->serial_lock);
1968 serial->tx_urb_used = 0;
e136e303 1969 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 1970 spin_unlock(&serial->serial_lock);
1971 if (status) {
68a351c5 1972 handle_usb_error(status, __func__, serial->parent);
e136e303 1973 tty_kref_put(tty);
72dc1c09
GKH		 1974 return;
1975 }
1976 hso_put_activity(serial->parent);
e136e303
AC		 1977 if (tty) {
1978 tty_wakeup(tty);
1979 tty_kref_put(tty);
1980 }
72dc1c09
GKH		 1981 hso_kick_transmit(serial);
1982
1983 D1(" ");
72dc1c09
GKH		 1984}
1985
1986/* called for writing diag or CS serial port */
1987static int hso_std_serial_write_data(struct hso_serial *serial)
1988{
1989 int count = serial->tx_data_count;
1990 int result;
1991
1992 usb_fill_bulk_urb(serial->tx_urb,
1993 serial->parent->usb,
1994 usb_sndbulkpipe(serial->parent->usb,
1995 serial->out_endp->
1996 bEndpointAddress & 0x7F),
1997 serial->tx_data, serial->tx_data_count,
1998 hso_std_serial_write_bulk_callback, serial);
1999
2000 result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC);
2001 if (result) {
2002 dev_warn(&serial->parent->usb->dev,
2003 "Failed to submit urb - res %d\n", result);
2004 return result;
2005 }
2006
2007 return count;
2008}
2009
2010/* callback after read or write on muxed serial port */
2011static void ctrl_callback(struct urb *urb)
2012{
2013 struct hso_serial *serial = urb->context;
2014 struct usb_ctrlrequest *req;
2015 int status = urb->status;
e136e303 2016 struct tty_struct *tty;
72dc1c09
GKH		 2017
2018 /* sanity check */
2019 if (!serial)
2020 return;
2021
2022 spin_lock(&serial->serial_lock);
2023 serial->tx_urb_used = 0;
e136e303 2024 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 2025 spin_unlock(&serial->serial_lock);
2026 if (status) {
68a351c5 2027 handle_usb_error(status, __func__, serial->parent);
e136e303 2028 tty_kref_put(tty);
72dc1c09
GKH		 2029 return;
2030 }
2031
2032 /* what request? */
2033 req = (struct usb_ctrlrequest *)(urb->setup_packet);
2034 D4("\n--- Got muxed ctrl callback 0x%02X ---", status);
2035 D4("Actual length of urb = %d\n", urb->actual_length);
2036 DUMP1(urb->transfer_buffer, urb->actual_length);
2037
2038 if (req->bRequestType ==
2039 (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) {
2040 /* response to a read command */
8ef5ba63
DJB		 2041 serial->rx_urb_filled[0] = 1;
2042 spin_lock(&serial->serial_lock);
2043 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
2044 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 2045 } else {
2046 hso_put_activity(serial->parent);
e136e303
AC		 2047 if (tty)
2048 tty_wakeup(tty);
72dc1c09
GKH		 2049 /* response to a write command */
2050 hso_kick_transmit(serial);
2051 }
e136e303 2052 tty_kref_put(tty);
72dc1c09
GKH		 2053}
2054
2055/* handle RX data for serial port */
8ef5ba63 2056static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
72dc1c09 2057{
e136e303 2058 struct tty_struct *tty;
8ef5ba63
DJB		 2059 int write_length_remaining = 0;
2060 int curr_write_len;
e136e303 2061
72dc1c09
GKH		 2062 /* Sanity check */
2063 if (urb == NULL || serial == NULL) {
2064 D1("serial = NULL");
8ef5ba63 2065 return -2;
72dc1c09
GKH		 2066 }
2067
d45eb81c 2068 /* All callers to put_rxbuf_data hold serial_lock */
e136e303 2069 tty = tty_kref_get(serial->tty);
e136e303 2070
72dc1c09 2071 /* Push data to tty */
8ef5ba63
DJB		 2072 if (tty) {
2073 write_length_remaining = urb->actual_length -
2074 serial->curr_rx_urb_offset;
72dc1c09 2075 D1("data to push to tty");
8ef5ba63 2076 while (write_length_remaining) {
5839b414
DJB		 2077 if (test_bit(TTY_THROTTLED, &tty->flags)) {
2078 tty_kref_put(tty);
8ef5ba63 2079 return -1;
5839b414 2080 }
8ef5ba63
DJB		 2081 curr_write_len = tty_insert_flip_string
2082 (tty, urb->transfer_buffer +
2083 serial->curr_rx_urb_offset,
2084 write_length_remaining);
2085 serial->curr_rx_urb_offset += curr_write_len;
2086 write_length_remaining -= curr_write_len;
2087 tty_flip_buffer_push(tty);
72dc1c09 2088 }
72dc1c09 2089 }
8ef5ba63
DJB		 2090 if (write_length_remaining == 0) {
2091 serial->curr_rx_urb_offset = 0;
2092 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
72dc1c09 2093 }
e136e303 2094 tty_kref_put(tty);
8ef5ba63 2095 return write_length_remaining;
72dc1c09
GKH		 2096}
2097
8ef5ba63 2098
72dc1c09
GKH		 2099/* Base driver functions */
2100
2101static void hso_log_port(struct hso_device *hso_dev)
2102{
2103 char *port_type;
2104 char port_dev[20];
2105
2106 switch (hso_dev->port_spec & HSO_PORT_MASK) {
2107 case HSO_PORT_CONTROL:
2108 port_type = "Control";
2109 break;
2110 case HSO_PORT_APP:
2111 port_type = "Application";
2112 break;
2113 case HSO_PORT_GPS:
2114 port_type = "GPS";
2115 break;
2116 case HSO_PORT_GPS_CONTROL:
2117 port_type = "GPS control";
2118 break;
2119 case HSO_PORT_APP2:
2120 port_type = "Application2";
2121 break;
2122 case HSO_PORT_PCSC:
2123 port_type = "PCSC";
2124 break;
2125 case HSO_PORT_DIAG:
2126 port_type = "Diagnostic";
2127 break;
2128 case HSO_PORT_DIAG2:
2129 port_type = "Diagnostic2";
2130 break;
2131 case HSO_PORT_MODEM:
2132 port_type = "Modem";
2133 break;
2134 case HSO_PORT_NETWORK:
2135 port_type = "Network";
2136 break;
2137 default:
2138 port_type = "Unknown";
2139 break;
2140 }
2141 if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2142 sprintf(port_dev, "%s", dev2net(hso_dev)->net->name);
2143 } else
2144 sprintf(port_dev, "/dev/%s%d", tty_filename,
2145 dev2ser(hso_dev)->minor);
2146
2147 dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n",
2148 port_type, port_dev);
2149}
2150
2151static int hso_start_net_device(struct hso_device *hso_dev)
2152{
2153 int i, result = 0;
2154 struct hso_net *hso_net = dev2net(hso_dev);
2155
2156 if (!hso_net)
2157 return -ENODEV;
2158
2159 /* send URBs for all read buffers */
2160 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2161
2162 /* Prep a receive URB */
2163 usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i],
2164 hso_dev->usb,
2165 usb_rcvbulkpipe(hso_dev->usb,
2166 hso_net->in_endp->
2167 bEndpointAddress & 0x7F),
2168 hso_net->mux_bulk_rx_buf_pool[i],
2169 MUX_BULK_RX_BUF_SIZE, read_bulk_callback,
2170 hso_net);
2171
2172 /* Put it out there so the device can send us stuff */
2173 result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i],
2174 GFP_NOIO);
2175 if (result)
2176 dev_warn(&hso_dev->usb->dev,
2177 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__,
2178 i, result);
2179 }
2180
2181 return result;
2182}
2183
2184static int hso_stop_net_device(struct hso_device *hso_dev)
2185{
2186 int i;
2187 struct hso_net *hso_net = dev2net(hso_dev);
2188
2189 if (!hso_net)
2190 return -ENODEV;
2191
2192 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2193 if (hso_net->mux_bulk_rx_urb_pool[i])
2194 usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2195
2196 }
2197 if (hso_net->mux_bulk_tx_urb)
2198 usb_kill_urb(hso_net->mux_bulk_tx_urb);
2199
2200 return 0;
2201}
2202
2203static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags)
2204{
2205 int i, result = 0;
2206 struct hso_serial *serial = dev2ser(hso_dev);
2207
2208 if (!serial)
2209 return -ENODEV;
2210
2211 /* If it is not the MUX port fill in and submit a bulk urb (already
2212 * allocated in hso_serial_start) */
2213 if (!(serial->parent->port_spec & HSO_INTF_MUX)) {
2214 for (i = 0; i < serial->num_rx_urbs; i++) {
2215 usb_fill_bulk_urb(serial->rx_urb[i],
2216 serial->parent->usb,
2217 usb_rcvbulkpipe(serial->parent->usb,
2218 serial->in_endp->
2219 bEndpointAddress &
2220 0x7F),
2221 serial->rx_data[i],
2222 serial->rx_data_length,
2223 hso_std_serial_read_bulk_callback,
2224 serial);
2225 result = usb_submit_urb(serial->rx_urb[i], flags);
2226 if (result) {
2227 dev_warn(&serial->parent->usb->dev,
2228 "Failed to submit urb - res %d\n",
2229 result);
2230 break;
2231 }
2232 }
2233 } else {
2234 mutex_lock(&serial->shared_int->shared_int_lock);
2235 if (!serial->shared_int->use_count) {
2236 result =
2237 hso_mux_submit_intr_urb(serial->shared_int,
2238 hso_dev->usb, flags);
2239 }
2240 serial->shared_int->use_count++;
2241 mutex_unlock(&serial->shared_int->shared_int_lock);
2242 }
542f5482
DJB		 2243 if (serial->tiocmget)
2244 tiocmget_submit_urb(serial,
2245 serial->tiocmget,
2246 serial->parent->usb);
72dc1c09
GKH		 2247 return result;
2248}
2249
2250static int hso_stop_serial_device(struct hso_device *hso_dev)
2251{
2252 int i;
2253 struct hso_serial *serial = dev2ser(hso_dev);
542f5482 2254 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2255
2256 if (!serial)
2257 return -ENODEV;
2258
2259 for (i = 0; i < serial->num_rx_urbs; i++) {
8ef5ba63 2260 if (serial->rx_urb[i]) {
72dc1c09 2261 usb_kill_urb(serial->rx_urb[i]);
8ef5ba63
DJB		 2262 serial->rx_urb_filled[i] = 0;
2263 }
72dc1c09 2264 }
8ef5ba63
DJB		 2265 serial->curr_rx_urb_idx = 0;
2266 serial->curr_rx_urb_offset = 0;
72dc1c09
GKH		 2267
2268 if (serial->tx_urb)
2269 usb_kill_urb(serial->tx_urb);
2270
2271 if (serial->shared_int) {
2272 mutex_lock(&serial->shared_int->shared_int_lock);
2273 if (serial->shared_int->use_count &&
2274 (--serial->shared_int->use_count == 0)) {
2275 struct urb *urb;
2276
2277 urb = serial->shared_int->shared_intr_urb;
2278 if (urb)
2279 usb_kill_urb(urb);
2280 }
2281 mutex_unlock(&serial->shared_int->shared_int_lock);
2282 }
542f5482
DJB		 2283 tiocmget = serial->tiocmget;
2284 if (tiocmget) {
2285 wake_up_interruptible(&tiocmget->waitq);
2286 usb_kill_urb(tiocmget->urb);
2287 }
72dc1c09
GKH		 2288
2289 return 0;
2290}
2291
2292static void hso_serial_common_free(struct hso_serial *serial)
2293{
2294 int i;
2295
2296 if (serial->parent->dev)
2297 device_remove_file(serial->parent->dev, &dev_attr_hsotype);
2298
2299 tty_unregister_device(tty_drv, serial->minor);
2300
2301 for (i = 0; i < serial->num_rx_urbs; i++) {
2302 /* unlink and free RX URB */
2303 usb_free_urb(serial->rx_urb[i]);
2304 /* free the RX buffer */
2305 kfree(serial->rx_data[i]);
2306 }
2307
2308 /* unlink and free TX URB */
2309 usb_free_urb(serial->tx_urb);
2310 kfree(serial->tx_data);
2311}
2312
2313static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
2314 int rx_size, int tx_size)
2315{
2316 struct device *dev;
2317 int minor;
2318 int i;
2319
2320 minor = get_free_serial_index();
2321 if (minor < 0)
2322 goto exit;
2323
2324 /* register our minor number */
2325 serial->parent->dev = tty_register_device(tty_drv, minor,
2326 &serial->parent->interface->dev);
2327 dev = serial->parent->dev;
1aec5bdf 2328 dev_set_drvdata(dev, serial->parent);
72dc1c09
GKH		 2329 i = device_create_file(dev, &dev_attr_hsotype);
2330
2331 /* fill in specific data for later use */
2332 serial->minor = minor;
2333 serial->magic = HSO_SERIAL_MAGIC;
2334 spin_lock_init(&serial->serial_lock);
2335 serial->num_rx_urbs = num_urbs;
2336
2337 /* RX, allocate urb and initialize */
2338
2339 /* prepare our RX buffer */
2340 serial->rx_data_length = rx_size;
2341 for (i = 0; i < serial->num_rx_urbs; i++) {
2342 serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
2343 if (!serial->rx_urb[i]) {
2344 dev_err(dev, "Could not allocate urb?\n");
2345 goto exit;
2346 }
2347 serial->rx_urb[i]->transfer_buffer = NULL;
2348 serial->rx_urb[i]->transfer_buffer_length = 0;
2349 serial->rx_data[i] = kzalloc(serial->rx_data_length,
2350 GFP_KERNEL);
2351 if (!serial->rx_data[i]) {
2352 dev_err(dev, "%s - Out of memory\n", __func__);
2353 goto exit;
2354 }
2355 }
2356
2357 /* TX, allocate urb and initialize */
2358 serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2359 if (!serial->tx_urb) {
2360 dev_err(dev, "Could not allocate urb?\n");
2361 goto exit;
2362 }
2363 serial->tx_urb->transfer_buffer = NULL;
2364 serial->tx_urb->transfer_buffer_length = 0;
2365 /* prepare our TX buffer */
2366 serial->tx_data_count = 0;
2367 serial->tx_buffer_count = 0;
2368 serial->tx_data_length = tx_size;
2369 serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL);
2370 if (!serial->tx_data) {
8a5c9c49 2371 dev_err(dev, "%s - Out of memory\n", __func__);
72dc1c09
GKH		 2372 goto exit;
2373 }
2374 serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL);
2375 if (!serial->tx_buffer) {
8a5c9c49 2376 dev_err(dev, "%s - Out of memory\n", __func__);
72dc1c09
GKH		 2377 goto exit;
2378 }
2379
2380 return 0;
2381exit:
2382 hso_serial_common_free(serial);
2383 return -1;
2384}
2385
72dc1c09
GKH		 2386/* Creates a general hso device */
2387static struct hso_device *hso_create_device(struct usb_interface *intf,
2388 int port_spec)
2389{
2390 struct hso_device *hso_dev;
2391
2392 hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC);
2393 if (!hso_dev)
2394 return NULL;
2395
2396 hso_dev->port_spec = port_spec;
2397 hso_dev->usb = interface_to_usbdev(intf);
2398 hso_dev->interface = intf;
2399 kref_init(&hso_dev->ref);
ab153d84
DM		 2400 mutex_init(&hso_dev->mutex);
2401
72dc1c09
GKH		 2402 INIT_WORK(&hso_dev->async_get_intf, async_get_intf);
2403 INIT_WORK(&hso_dev->async_put_intf, async_put_intf);
68a351c5 2404 INIT_WORK(&hso_dev->reset_device, reset_device);
72dc1c09
GKH		 2405
2406 return hso_dev;
2407}
2408
2409/* Removes a network device in the network device table */
2410static int remove_net_device(struct hso_device *hso_dev)
2411{
2412 int i;
2413
2414 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2415 if (network_table[i] == hso_dev) {
2416 network_table[i] = NULL;
2417 break;
2418 }
2419 }
2420 if (i == HSO_MAX_NET_DEVICES)
2421 return -1;
2422 return 0;
2423}
2424
2425/* Frees our network device */
2426static void hso_free_net_device(struct hso_device *hso_dev)
2427{
2428 int i;
2429 struct hso_net *hso_net = dev2net(hso_dev);
2430
2431 if (!hso_net)
2432 return;
2433
3b7d2b31
JD		 2434 remove_net_device(hso_net->parent);
2435
2436 if (hso_net->net) {
2437 unregister_netdev(hso_net->net);
2438 free_netdev(hso_net->net);
2439 }
2440
72dc1c09
GKH		 2441 /* start freeing */
2442 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2443 usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2444 kfree(hso_net->mux_bulk_rx_buf_pool[i]);
3b7d2b31 2445 hso_net->mux_bulk_rx_buf_pool[i] = NULL;
72dc1c09
GKH		 2446 }
2447 usb_free_urb(hso_net->mux_bulk_tx_urb);
2448 kfree(hso_net->mux_bulk_tx_buf);
3b7d2b31 2449 hso_net->mux_bulk_tx_buf = NULL;
ab153d84 2450
e44578ea 2451 kfree(hso_dev);
72dc1c09
GKH		 2452}
2453
c266cb4e
SH		 2454static const struct net_device_ops hso_netdev_ops = {
2455 .ndo_open = hso_net_open,
2456 .ndo_stop = hso_net_close,
2457 .ndo_start_xmit = hso_net_start_xmit,
2458 .ndo_tx_timeout = hso_net_tx_timeout,
2459};
2460
72dc1c09
GKH		 2461/* initialize the network interface */
2462static void hso_net_init(struct net_device *net)
2463{
2464 struct hso_net *hso_net = netdev_priv(net);
2465
2466 D1("sizeof hso_net is %d", (int)sizeof(*hso_net));
2467
2468 /* fill in the other fields */
c266cb4e 2469 net->netdev_ops = &hso_netdev_ops;
72dc1c09
GKH		 2470 net->watchdog_timeo = HSO_NET_TX_TIMEOUT;
2471 net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
2472 net->type = ARPHRD_NONE;
2473 net->mtu = DEFAULT_MTU - 14;
2474 net->tx_queue_len = 10;
2475 SET_ETHTOOL_OPS(net, &ops);
2476
2477 /* and initialize the semaphore */
2478 spin_lock_init(&hso_net->net_lock);
2479}
2480
2481/* Adds a network device in the network device table */
2482static int add_net_device(struct hso_device *hso_dev)
2483{
2484 int i;
2485
2486 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2487 if (network_table[i] == NULL) {
2488 network_table[i] = hso_dev;
2489 break;
2490 }
2491 }
2492 if (i == HSO_MAX_NET_DEVICES)
2493 return -1;
2494 return 0;
2495}
2496
19d337df 2497static int hso_rfkill_set_block(void *data, bool blocked)
72dc1c09
GKH		 2498{
2499 struct hso_device *hso_dev = data;
19d337df 2500 int enabled = !blocked;
72dc1c09
GKH		 2501 int rv;
2502
ab153d84 2503 mutex_lock(&hso_dev->mutex);
72dc1c09
GKH		 2504 if (hso_dev->usb_gone)
2505 rv = 0;
2506 else
2507 rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0),
2508 enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
2509 USB_CTRL_SET_TIMEOUT);
ab153d84 2510 mutex_unlock(&hso_dev->mutex);
72dc1c09
GKH		 2511 return rv;
2512}
2513
19d337df
JB		 2514static const struct rfkill_ops hso_rfkill_ops = {
2515 .set_block = hso_rfkill_set_block,
2516};
2517
72dc1c09
GKH		 2518/* Creates and sets up everything for rfkill */
2519static void hso_create_rfkill(struct hso_device *hso_dev,
2520 struct usb_interface *interface)
2521{
2522 struct hso_net *hso_net = dev2net(hso_dev);
939a9516 2523 struct device *dev = &hso_net->net->dev;
72dc1c09
GKH		 2524 char *rfkn;
2525
72dc1c09 2526 rfkn = kzalloc(20, GFP_KERNEL);
19d337df 2527 if (!rfkn)
939a9516 2528 dev_err(dev, "%s - Out of memory\n", __func__);
19d337df 2529
72dc1c09
GKH		 2530 snprintf(rfkn, 20, "hso-%d",
2531 interface->altsetting->desc.bInterfaceNumber);
19d337df
JB		 2532
2533 hso_net->rfkill = rfkill_alloc(rfkn,
2534 &interface_to_usbdev(interface)->dev,
2535 RFKILL_TYPE_WWAN,
2536 &hso_rfkill_ops, hso_dev);
2537 if (!hso_net->rfkill) {
2538 dev_err(dev, "%s - Out of memory\n", __func__);
2539 kfree(rfkn);
2540 return;
2541 }
72dc1c09 2542 if (rfkill_register(hso_net->rfkill) < 0) {
19d337df 2543 rfkill_destroy(hso_net->rfkill);
72dc1c09 2544 kfree(rfkn);
939a9516
JM		 2545 hso_net->rfkill = NULL;
2546 dev_err(dev, "%s - Failed to register rfkill\n", __func__);
72dc1c09
GKH		 2547 return;
2548 }
2549}
2550
384912ed
MH		 2551static struct device_type hso_type = {
2552 .name = "wwan",
2553};
2554
72dc1c09 2555/* Creates our network device */
0de8ca59
JD		 2556static struct hso_device *hso_create_net_device(struct usb_interface *interface,
2557 int port_spec)
72dc1c09
GKH		 2558{
2559 int result, i;
2560 struct net_device *net;
2561 struct hso_net *hso_net;
2562 struct hso_device *hso_dev;
2563
0de8ca59 2564 hso_dev = hso_create_device(interface, port_spec);
72dc1c09
GKH		 2565 if (!hso_dev)
2566 return NULL;
2567
2568 /* allocate our network device, then we can put in our private data */
2569 /* call hso_net_init to do the basic initialization */
2570 net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init);
2571 if (!net) {
2572 dev_err(&interface->dev, "Unable to create ethernet device\n");
2573 goto exit;
2574 }
2575
2576 hso_net = netdev_priv(net);
2577
2578 hso_dev->port_data.dev_net = hso_net;
2579 hso_net->net = net;
2580 hso_net->parent = hso_dev;
2581
2582 hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2583 USB_DIR_IN);
2584 if (!hso_net->in_endp) {
2585 dev_err(&interface->dev, "Can't find BULK IN endpoint\n");
2586 goto exit;
2587 }
2588 hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2589 USB_DIR_OUT);
2590 if (!hso_net->out_endp) {
2591 dev_err(&interface->dev, "Can't find BULK OUT endpoint\n");
2592 goto exit;
2593 }
2594 SET_NETDEV_DEV(net, &interface->dev);
384912ed 2595 SET_NETDEV_DEVTYPE(net, &hso_type);
72dc1c09
GKH		 2596
2597 /* registering our net device */
2598 result = register_netdev(net);
2599 if (result) {
2600 dev_err(&interface->dev, "Failed to register device\n");
2601 goto exit;
2602 }
2603
2604 /* start allocating */
2605 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2606 hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL);
2607 if (!hso_net->mux_bulk_rx_urb_pool[i]) {
2608 dev_err(&interface->dev, "Could not allocate rx urb\n");
2609 goto exit;
2610 }
2611 hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE,
2612 GFP_KERNEL);
2613 if (!hso_net->mux_bulk_rx_buf_pool[i]) {
2614 dev_err(&interface->dev, "Could not allocate rx buf\n");
2615 goto exit;
2616 }
2617 }
2618 hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2619 if (!hso_net->mux_bulk_tx_urb) {
2620 dev_err(&interface->dev, "Could not allocate tx urb\n");
2621 goto exit;
2622 }
2623 hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL);
2624 if (!hso_net->mux_bulk_tx_buf) {
2625 dev_err(&interface->dev, "Could not allocate tx buf\n");
2626 goto exit;
2627 }
2628
2629 add_net_device(hso_dev);
2630
2631 hso_log_port(hso_dev);
2632
2633 hso_create_rfkill(hso_dev, interface);
2634
2635 return hso_dev;
2636exit:
2637 hso_free_net_device(hso_dev);
2638 return NULL;
2639}
2640
542f5482
DJB		 2641static void hso_free_tiomget(struct hso_serial *serial)
2642{
2643 struct hso_tiocmget *tiocmget = serial->tiocmget;
2644 if (tiocmget) {
542f5482
DJB		 2645 if (tiocmget->urb) {
2646 usb_free_urb(tiocmget->urb);
2647 tiocmget->urb = NULL;
2648 }
2649 serial->tiocmget = NULL;
3b7d2b31 2650 kfree(tiocmget);
542f5482
DJB		 2651
2652 }
2653}
2654
72dc1c09
GKH		 2655/* Frees an AT channel ( goes for both mux and non-mux ) */
2656static void hso_free_serial_device(struct hso_device *hso_dev)
2657{
2658 struct hso_serial *serial = dev2ser(hso_dev);
2659
2660 if (!serial)
2661 return;
2662 set_serial_by_index(serial->minor, NULL);
2663
2664 hso_serial_common_free(serial);
2665
2666 if (serial->shared_int) {
2667 mutex_lock(&serial->shared_int->shared_int_lock);
2668 if (--serial->shared_int->ref_count == 0)
2669 hso_free_shared_int(serial->shared_int);
2670 else
2671 mutex_unlock(&serial->shared_int->shared_int_lock);
2672 }
542f5482 2673 hso_free_tiomget(serial);
72dc1c09 2674 kfree(serial);
e44578ea 2675 kfree(hso_dev);
72dc1c09
GKH		 2676}
2677
2678/* Creates a bulk AT channel */
2679static struct hso_device *hso_create_bulk_serial_device(
2680 struct usb_interface *interface, int port)
2681{
2682 struct hso_device *hso_dev;
2683 struct hso_serial *serial;
2684 int num_urbs;
542f5482 2685 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2686
2687 hso_dev = hso_create_device(interface, port);
2688 if (!hso_dev)
2689 return NULL;
2690
2691 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2692 if (!serial)
2693 goto exit;
2694
2695 serial->parent = hso_dev;
2696 hso_dev->port_data.dev_serial = serial;
2697
58eb17f1 2698 if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
72dc1c09 2699 num_urbs = 2;
542f5482
DJB		 2700 serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
2701 GFP_KERNEL);
2702 /* it isn't going to break our heart if serial->tiocmget
2703 * allocation fails don't bother checking this.
2704 */
2705 if (serial->tiocmget) {
2706 tiocmget = serial->tiocmget;
2707 tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
2708 if (tiocmget->urb) {
2709 mutex_init(&tiocmget->mutex);
2710 init_waitqueue_head(&tiocmget->waitq);
2711 tiocmget->endp = hso_get_ep(
2712 interface,
2713 USB_ENDPOINT_XFER_INT,
2714 USB_DIR_IN);
2715 } else
2716 hso_free_tiomget(serial);
2717 }
2718 }
72dc1c09
GKH		 2719 else
2720 num_urbs = 1;
2721
2722 if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE,
2723 BULK_URB_TX_SIZE))
2724 goto exit;
2725
2726 serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2727 USB_DIR_IN);
2728 if (!serial->in_endp) {
2729 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2730 goto exit2;
72dc1c09
GKH		 2731 }
2732
2733 if (!
2734 (serial->out_endp =
2735 hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) {
2736 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2737 goto exit2;
72dc1c09
GKH		 2738 }
2739
2740 serial->write_data = hso_std_serial_write_data;
2741
2742 /* and record this serial */
2743 set_serial_by_index(serial->minor, serial);
2744
2745 /* setup the proc dirs and files if needed */
2746 hso_log_port(hso_dev);
2747
2748 /* done, return it */
2749 return hso_dev;
e57b641d
AB		 2750
2751exit2:
2752 hso_serial_common_free(serial);
72dc1c09 2753exit:
542f5482 2754 hso_free_tiomget(serial);
72dc1c09 2755 kfree(serial);
e44578ea 2756 kfree(hso_dev);
72dc1c09
GKH		 2757 return NULL;
2758}
2759
2760/* Creates a multiplexed AT channel */
2761static
2762struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
2763 int port,
2764 struct hso_shared_int *mux)
2765{
2766 struct hso_device *hso_dev;
2767 struct hso_serial *serial;
2768 int port_spec;
2769
2770 port_spec = HSO_INTF_MUX;
2771 port_spec &= ~HSO_PORT_MASK;
2772
2773 port_spec |= hso_mux_to_port(port);
2774 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT)
2775 return NULL;
2776
2777 hso_dev = hso_create_device(interface, port_spec);
2778 if (!hso_dev)
2779 return NULL;
2780
2781 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2782 if (!serial)
2783 goto exit;
2784
2785 hso_dev->port_data.dev_serial = serial;
2786 serial->parent = hso_dev;
2787
2788 if (hso_serial_common_create
2789 (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE))
2790 goto exit;
2791
2792 serial->tx_data_length--;
2793 serial->write_data = hso_mux_serial_write_data;
2794
2795 serial->shared_int = mux;
2796 mutex_lock(&serial->shared_int->shared_int_lock);
2797 serial->shared_int->ref_count++;
2798 mutex_unlock(&serial->shared_int->shared_int_lock);
2799
2800 /* and record this serial */
2801 set_serial_by_index(serial->minor, serial);
2802
2803 /* setup the proc dirs and files if needed */
2804 hso_log_port(hso_dev);
2805
2806 /* done, return it */
2807 return hso_dev;
2808
2809exit:
2810 if (serial) {
2811 tty_unregister_device(tty_drv, serial->minor);
2812 kfree(serial);
2813 }
2814 if (hso_dev)
e44578ea 2815 kfree(hso_dev);
72dc1c09
GKH		 2816 return NULL;
2817
2818}
2819
2820static void hso_free_shared_int(struct hso_shared_int *mux)
2821{
2822 usb_free_urb(mux->shared_intr_urb);
2823 kfree(mux->shared_intr_buf);
2824 mutex_unlock(&mux->shared_int_lock);
2825 kfree(mux);
2826}
2827
2828static
2829struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface)
2830{
2831 struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL);
2832
2833 if (!mux)
2834 return NULL;
2835
2836 mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT,
2837 USB_DIR_IN);
2838 if (!mux->intr_endp) {
2839 dev_err(&interface->dev, "Can't find INT IN endpoint\n");
2840 goto exit;
2841 }
2842
2843 mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL);
2844 if (!mux->shared_intr_urb) {
8a5c9c49 2845 dev_err(&interface->dev, "Could not allocate intr urb?\n");
72dc1c09
GKH		 2846 goto exit;
2847 }
d9ced80d
JD		 2848 mux->shared_intr_buf =
2849 kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize),
2850 GFP_KERNEL);
72dc1c09 2851 if (!mux->shared_intr_buf) {
8a5c9c49 2852 dev_err(&interface->dev, "Could not allocate intr buf?\n");
72dc1c09
GKH		 2853 goto exit;
2854 }
2855
2856 mutex_init(&mux->shared_int_lock);
2857
2858 return mux;
2859
2860exit:
2861 kfree(mux->shared_intr_buf);
2862 usb_free_urb(mux->shared_intr_urb);
2863 kfree(mux);
2864 return NULL;
2865}
2866
2867/* Gets the port spec for a certain interface */
2868static int hso_get_config_data(struct usb_interface *interface)
2869{
2870 struct usb_device *usbdev = interface_to_usbdev(interface);
2871 u8 config_data[17];
2872 u32 if_num = interface->altsetting->desc.bInterfaceNumber;
2873 s32 result;
2874
2875 if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
2876 0x86, 0xC0, 0, 0, config_data, 17,
2877 USB_CTRL_SET_TIMEOUT) != 0x11) {
2878 return -EIO;
2879 }
2880
2881 switch (config_data[if_num]) {
2882 case 0x0:
2883 result = 0;
2884 break;
2885 case 0x1:
2886 result = HSO_PORT_DIAG;
2887 break;
2888 case 0x2:
2889 result = HSO_PORT_GPS;
2890 break;
2891 case 0x3:
2892 result = HSO_PORT_GPS_CONTROL;
2893 break;
2894 case 0x4:
2895 result = HSO_PORT_APP;
2896 break;
2897 case 0x5:
2898 result = HSO_PORT_APP2;
2899 break;
2900 case 0x6:
2901 result = HSO_PORT_CONTROL;
2902 break;
2903 case 0x7:
2904 result = HSO_PORT_NETWORK;
2905 break;
2906 case 0x8:
2907 result = HSO_PORT_MODEM;
2908 break;
2909 case 0x9:
2910 result = HSO_PORT_MSD;
2911 break;
2912 case 0xa:
2913 result = HSO_PORT_PCSC;
2914 break;
2915 case 0xb:
2916 result = HSO_PORT_VOICE;
2917 break;
2918 default:
2919 result = 0;
2920 }
2921
2922 if (result)
2923 result |= HSO_INTF_BULK;
2924
2925 if (config_data[16] & 0x1)
2926 result |= HSO_INFO_CRC_BUG;
2927
2928 return result;
2929}
2930
2931/* called once for each interface upon device insertion */
2932static int hso_probe(struct usb_interface *interface,
2933 const struct usb_device_id *id)
2934{
2935 int mux, i, if_num, port_spec;
2936 unsigned char port_mask;
2937 struct hso_device *hso_dev = NULL;
2938 struct hso_shared_int *shared_int;
2939 struct hso_device *tmp_dev = NULL;
2940
2941 if_num = interface->altsetting->desc.bInterfaceNumber;
2942
2943 /* Get the interface/port specification from either driver_info or from
2944 * the device itself */
2945 if (id->driver_info)
2946 port_spec = ((u32 *)(id->driver_info))[if_num];
2947 else
2948 port_spec = hso_get_config_data(interface);
2949
2950 if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
2951 dev_err(&interface->dev, "Not our interface\n");
2952 return -ENODEV;
2953 }
2954 /* Check if we need to switch to alt interfaces prior to port
2955 * configuration */
2956 if (interface->num_altsetting > 1)
2957 usb_set_interface(interface_to_usbdev(interface), if_num, 1);
2958 interface->needs_remote_wakeup = 1;
2959
2960 /* Allocate new hso device(s) */
2961 switch (port_spec & HSO_INTF_MASK) {
2962 case HSO_INTF_MUX:
2963 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2964 /* Create the network device */
2965 if (!disable_net) {
0de8ca59
JD		 2966 hso_dev = hso_create_net_device(interface,
2967 port_spec);
72dc1c09
GKH		 2968 if (!hso_dev)
2969 goto exit;
2970 tmp_dev = hso_dev;
2971 }
2972 }
2973
2974 if (hso_get_mux_ports(interface, &port_mask))
2975 /* TODO: de-allocate everything */
2976 goto exit;
2977
2978 shared_int = hso_create_shared_int(interface);
2979 if (!shared_int)
2980 goto exit;
2981
2982 for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) {
2983 if (port_mask & i) {
2984 hso_dev = hso_create_mux_serial_device(
2985 interface, i, shared_int);
2986 if (!hso_dev)
2987 goto exit;
2988 }
2989 }
2990
2991 if (tmp_dev)
2992 hso_dev = tmp_dev;
2993 break;
2994
2995 case HSO_INTF_BULK:
2996 /* It's a regular bulk interface */
8e95a202
JP		 2997 if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) &&
2998 !disable_net)
0de8ca59 2999 hso_dev = hso_create_net_device(interface, port_spec);
72dc1c09
GKH		 3000 else
3001 hso_dev =
3002 hso_create_bulk_serial_device(interface, port_spec);
3003 if (!hso_dev)
3004 goto exit;
3005 break;
3006 default:
3007 goto exit;
3008 }
3009
72dc1c09
GKH		 3010 /* save our data pointer in this device */
3011 usb_set_intfdata(interface, hso_dev);
3012
3013 /* done */
3014 return 0;
3015exit:
3016 hso_free_interface(interface);
3017 return -ENODEV;
3018}
3019
3020/* device removed, cleaning up */
3021static void hso_disconnect(struct usb_interface *interface)
3022{
3023 hso_free_interface(interface);
3024
3025 /* remove reference of our private data */
3026 usb_set_intfdata(interface, NULL);
72dc1c09
GKH		 3027}
3028
3029static void async_get_intf(struct work_struct *data)
3030{
3031 struct hso_device *hso_dev =
3032 container_of(data, struct hso_device, async_get_intf);
3033 usb_autopm_get_interface(hso_dev->interface);
3034}
3035
3036static void async_put_intf(struct work_struct *data)
3037{
3038 struct hso_device *hso_dev =
3039 container_of(data, struct hso_device, async_put_intf);
3040 usb_autopm_put_interface(hso_dev->interface);
3041}
3042
3043static int hso_get_activity(struct hso_device *hso_dev)
3044{
3045 if (hso_dev->usb->state == USB_STATE_SUSPENDED) {
3046 if (!hso_dev->is_active) {
3047 hso_dev->is_active = 1;
3048 schedule_work(&hso_dev->async_get_intf);
3049 }
3050 }
3051
3052 if (hso_dev->usb->state != USB_STATE_CONFIGURED)
3053 return -EAGAIN;
3054
3055 usb_mark_last_busy(hso_dev->usb);
3056
3057 return 0;
3058}
3059
3060static int hso_put_activity(struct hso_device *hso_dev)
3061{
3062 if (hso_dev->usb->state != USB_STATE_SUSPENDED) {
3063 if (hso_dev->is_active) {
3064 hso_dev->is_active = 0;
3065 schedule_work(&hso_dev->async_put_intf);
3066 return -EAGAIN;
3067 }
3068 }
3069 hso_dev->is_active = 0;
3070 return 0;
3071}
3072
3073/* called by kernel when we need to suspend device */
3074static int hso_suspend(struct usb_interface *iface, pm_message_t message)
3075{
3076 int i, result;
3077
3078 /* Stop all serial ports */
3079 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3080 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3081 result = hso_stop_serial_device(serial_table[i]);
3082 if (result)
3083 goto out;
3084 }
3085 }
3086
3087 /* Stop all network ports */
3088 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3089 if (network_table[i] &&
3090 (network_table[i]->interface == iface)) {
3091 result = hso_stop_net_device(network_table[i]);
3092 if (result)
3093 goto out;
3094 }
3095 }
3096
3097out:
3098 return 0;
3099}
3100
3101/* called by kernel when we need to resume device */
3102static int hso_resume(struct usb_interface *iface)
3103{
3104 int i, result = 0;
3105 struct hso_net *hso_net;
3106
3107 /* Start all serial ports */
3108 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3109 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3110 if (dev2ser(serial_table[i])->open_count) {
3111 result =
3112 hso_start_serial_device(serial_table[i], GFP_NOIO);
3113 hso_kick_transmit(dev2ser(serial_table[i]));
3114 if (result)
3115 goto out;
3116 }
3117 }
3118 }
3119
3120 /* Start all network ports */
3121 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3122 if (network_table[i] &&
3123 (network_table[i]->interface == iface)) {
3124 hso_net = dev2net(network_table[i]);
89930b7b
DJB		 3125 if (hso_net->flags & IFF_UP) {
3126 /* First transmit any lingering data,
3127 then restart the device. */
3128 if (hso_net->skb_tx_buf) {
3129 dev_dbg(&iface->dev,
3130 "Transmitting"
3131 " lingering data\n");
3132 hso_net_start_xmit(hso_net->skb_tx_buf,
3133 hso_net->net);
3134 hso_net->skb_tx_buf = NULL;
3135 }
3136 result = hso_start_net_device(network_table[i]);
3137 if (result)
3138 goto out;
72dc1c09 3139 }
72dc1c09
GKH		 3140 }
3141 }
3142
3143out:
3144 return result;
3145}
3146
68a351c5
JD		 3147static void reset_device(struct work_struct *data)
3148{
3149 struct hso_device *hso_dev =
3150 container_of(data, struct hso_device, reset_device);
3151 struct usb_device *usb = hso_dev->usb;
3152 int result;
3153
3154 if (hso_dev->usb_gone) {
3155 D1("No reset during disconnect\n");
3156 } else {
3157 result = usb_lock_device_for_reset(usb, hso_dev->interface);
3158 if (result < 0)
3159 D1("unable to lock device for reset: %d\n", result);
3160 else {
3161 usb_reset_device(usb);
3162 usb_unlock_device(usb);
3163 }
3164 }
3165}
3166
72dc1c09
GKH		 3167static void hso_serial_ref_free(struct kref *ref)
3168{
3169 struct hso_device *hso_dev = container_of(ref, struct hso_device, ref);
3170
3171 hso_free_serial_device(hso_dev);
3172}
3173
3174static void hso_free_interface(struct usb_interface *interface)
3175{
3176 struct hso_serial *hso_dev;
e136e303 3177 struct tty_struct *tty;
72dc1c09
GKH		 3178 int i;
3179
3180 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
8e95a202
JP		 3181 if (serial_table[i] &&
3182 (serial_table[i]->interface == interface)) {
72dc1c09 3183 hso_dev = dev2ser(serial_table[i]);
e136e303
AC		 3184 spin_lock_irq(&hso_dev->serial_lock);
3185 tty = tty_kref_get(hso_dev->tty);
3186 spin_unlock_irq(&hso_dev->serial_lock);
3187 if (tty)
3188 tty_hangup(tty);
ab153d84 3189 mutex_lock(&hso_dev->parent->mutex);
e136e303 3190 tty_kref_put(tty);
72dc1c09 3191 hso_dev->parent->usb_gone = 1;
ab153d84
DM		 3192 mutex_unlock(&hso_dev->parent->mutex);
3193 kref_put(&serial_table[i]->ref, hso_serial_ref_free);
72dc1c09
GKH		 3194 }
3195 }
3196
3197 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
8e95a202
JP		 3198 if (network_table[i] &&
3199 (network_table[i]->interface == interface)) {
72dc1c09
GKH		 3200 struct rfkill *rfk = dev2net(network_table[i])->rfkill;
3201 /* hso_stop_net_device doesn't stop the net queue since
3202 * traffic needs to start it again when suspended */
3203 netif_stop_queue(dev2net(network_table[i])->net);
3204 hso_stop_net_device(network_table[i]);
3205 cancel_work_sync(&network_table[i]->async_put_intf);
3206 cancel_work_sync(&network_table[i]->async_get_intf);
19d337df 3207 if (rfk) {
72dc1c09 3208 rfkill_unregister(rfk);
19d337df
JB		 3209 rfkill_destroy(rfk);
3210 }
72dc1c09
GKH		 3211 hso_free_net_device(network_table[i]);
3212 }
3213 }
3214}
3215
3216/* Helper functions */
3217
3218/* Get the endpoint ! */
3219static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
3220 int type, int dir)
3221{
3222 int i;
3223 struct usb_host_interface *iface = intf->cur_altsetting;
3224 struct usb_endpoint_descriptor *endp;
3225
3226 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3227 endp = &iface->endpoint[i].desc;
3228 if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) &&
f201a8a4 3229 (usb_endpoint_type(endp) == type))
72dc1c09
GKH		 3230 return endp;
3231 }
3232
3233 return NULL;
3234}
3235
3236/* Get the byte that describes which ports are enabled */
3237static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports)
3238{
3239 int i;
3240 struct usb_host_interface *iface = intf->cur_altsetting;
3241
3242 if (iface->extralen == 3) {
3243 *ports = iface->extra[2];
3244 return 0;
3245 }
3246
3247 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3248 if (iface->endpoint[i].extralen == 3) {
3249 *ports = iface->endpoint[i].extra[2];
3250 return 0;
3251 }
3252 }
3253
3254 return -1;
3255}
3256
3257/* interrupt urb needs to be submitted, used for serial read of muxed port */
3258static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int,
3259 struct usb_device *usb, gfp_t gfp)
3260{
3261 int result;
3262
3263 usb_fill_int_urb(shared_int->shared_intr_urb, usb,
3264 usb_rcvintpipe(usb,
3265 shared_int->intr_endp->bEndpointAddress & 0x7F),
3266 shared_int->shared_intr_buf,
d9ced80d 3267 1,
72dc1c09
GKH		 3268 intr_callback, shared_int,
3269 shared_int->intr_endp->bInterval);
3270
3271 result = usb_submit_urb(shared_int->shared_intr_urb, gfp);
3272 if (result)
8a5c9c49 3273 dev_warn(&usb->dev, "%s failed mux_intr_urb %d\n", __func__,
72dc1c09
GKH		 3274 result);
3275
3276 return result;
3277}
3278
3279/* operations setup of the serial interface */
6c59f569 3280static const struct tty_operations hso_serial_ops = {
72dc1c09
GKH		 3281 .open = hso_serial_open,
3282 .close = hso_serial_close,
3283 .write = hso_serial_write,
3284 .write_room = hso_serial_write_room,
542f5482 3285 .ioctl = hso_serial_ioctl,
72dc1c09
GKH		 3286 .set_termios = hso_serial_set_termios,
3287 .chars_in_buffer = hso_serial_chars_in_buffer,
3288 .tiocmget = hso_serial_tiocmget,
3289 .tiocmset = hso_serial_tiocmset,
0bca1b91 3290 .get_icount = hso_get_count,
8ef5ba63 3291 .unthrottle = hso_unthrottle
72dc1c09
GKH		 3292};
3293
3294static struct usb_driver hso_driver = {
3295 .name = driver_name,
3296 .probe = hso_probe,
3297 .disconnect = hso_disconnect,
3298 .id_table = hso_ids,
3299 .suspend = hso_suspend,
3300 .resume = hso_resume,
9c8f92ae 3301 .reset_resume = hso_resume,
72dc1c09
GKH		 3302 .supports_autosuspend = 1,
3303};
3304
3305static int __init hso_init(void)
3306{
3307 int i;
3308 int result;
3309
3310 /* put it in the log */
3311 printk(KERN_INFO "hso: %s\n", version);
3312
3313 /* Initialise the serial table semaphore and table */
3314 spin_lock_init(&serial_table_lock);
3315 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++)
3316 serial_table[i] = NULL;
3317
3318 /* allocate our driver using the proper amount of supported minors */
3319 tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS);
3320 if (!tty_drv)
3321 return -ENOMEM;
3322
3323 /* fill in all needed values */
3324 tty_drv->magic = TTY_DRIVER_MAGIC;
3325 tty_drv->owner = THIS_MODULE;
3326 tty_drv->driver_name = driver_name;
3327 tty_drv->name = tty_filename;
3328
3329 /* if major number is provided as parameter, use that one */
3330 if (tty_major)
3331 tty_drv->major = tty_major;
3332
3333 tty_drv->minor_start = 0;
3334 tty_drv->num = HSO_SERIAL_TTY_MINORS;
3335 tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
3336 tty_drv->subtype = SERIAL_TYPE_NORMAL;
3337 tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
3338 tty_drv->init_termios = tty_std_termios;
ac9720c3 3339 hso_init_termios(&tty_drv->init_termios);
72dc1c09
GKH		 3340 tty_set_operations(tty_drv, &hso_serial_ops);
3341
3342 /* register the tty driver */
3343 result = tty_register_driver(tty_drv);
3344 if (result) {
3345 printk(KERN_ERR "%s - tty_register_driver failed(%d)\n",
3346 __func__, result);
3347 return result;
3348 }
3349
3350 /* register this module as an usb driver */
3351 result = usb_register(&hso_driver);
3352 if (result) {
3353 printk(KERN_ERR "Could not register hso driver? error: %d\n",
3354 result);
3355 /* cleanup serial interface */
3356 tty_unregister_driver(tty_drv);
3357 return result;
3358 }
3359
3360 /* done */
3361 return 0;
3362}
3363
3364static void __exit hso_exit(void)
3365{
3366 printk(KERN_INFO "hso: unloaded\n");
3367
3368 tty_unregister_driver(tty_drv);
3369 /* deregister the usb driver */
3370 usb_deregister(&hso_driver);
3371}
3372
3373/* Module definitions */
3374module_init(hso_init);
3375module_exit(hso_exit);
3376
3377MODULE_AUTHOR(MOD_AUTHOR);
3378MODULE_DESCRIPTION(MOD_DESCRIPTION);
3379MODULE_LICENSE(MOD_LICENSE);
72dc1c09
GKH		 3380
3381/* change the debug level (eg: insmod hso.ko debug=0x04) */
3382MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
3383module_param(debug, int, S_IRUGO | S_IWUSR);
3384
3385/* set the major tty number (eg: insmod hso.ko tty_major=245) */
3386MODULE_PARM_DESC(tty_major, "Set the major tty number");
3387module_param(tty_major, int, S_IRUGO | S_IWUSR);
3388
3389/* disable network interface (eg: insmod hso.ko disable_net=1) */
3390MODULE_PARM_DESC(disable_net, "Disable the network interface");
3391module_param(disable_net, int, S_IRUGO | S_IWUSR);
Linux kernel - Deliverables
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