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drivers/net/*.c: Use static const
[deliverable/linux.git] / drivers / net / usb / hso.c
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72dc1c09
GKH		 1/******************************************************************************
2 *
3 * Driver for Option High Speed Mobile Devices.
4 *
5 * Copyright (C) 2008 Option International
11cd29b0
DJB		 6 * Filip Aben <f.aben@option.com>
7 * Denis Joseph Barrow <d.barow@option.com>
3b7d2b31 8 * Jan Dumon <j.dumon@option.com>
72dc1c09
GKH		 9 * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd)
10 * <ajb@spheresystems.co.uk>
11 * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
12 * Copyright (C) 2008 Novell, Inc.
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
26 * USA
27 *
28 *
29 *****************************************************************************/
30
31/******************************************************************************
32 *
33 * Description of the device:
34 *
35 * Interface 0: Contains the IP network interface on the bulk end points.
36 * The multiplexed serial ports are using the interrupt and
37 * control endpoints.
38 * Interrupt contains a bitmap telling which multiplexed
39 * serialport needs servicing.
40 *
41 * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the
42 * port is opened, as this have a huge impact on the network port
43 * throughput.
44 *
542f5482
DJB		 45 * Interface 2: Standard modem interface - circuit switched interface, this
46 * can be used to make a standard ppp connection however it
47 * should not be used in conjunction with the IP network interface
48 * enabled for USB performance reasons i.e. if using this set
49 * ideally disable_net=1.
72dc1c09
GKH		 50 *
51 *****************************************************************************/
52
53#include <linux/sched.h>
54#include <linux/slab.h>
55#include <linux/init.h>
56#include <linux/delay.h>
57#include <linux/netdevice.h>
58#include <linux/module.h>
59#include <linux/ethtool.h>
60#include <linux/usb.h>
61#include <linux/timer.h>
62#include <linux/tty.h>
63#include <linux/tty_driver.h>
64#include <linux/tty_flip.h>
65#include <linux/kmod.h>
66#include <linux/rfkill.h>
67#include <linux/ip.h>
68#include <linux/uaccess.h>
69#include <linux/usb/cdc.h>
70#include <net/arp.h>
71#include <asm/byteorder.h>
542f5482
DJB		 72#include <linux/serial_core.h>
73#include <linux/serial.h>
72dc1c09
GKH		 74
75
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 skb_reset_mac_header(odev->skb_rx_buf);
962
963 /* Ship it off to the kernel */
964 netif_rx(odev->skb_rx_buf);
965 /* No longer our buffer. */
966 odev->skb_rx_buf = NULL;
967
968 /* update out statistics */
969 odev->net->stats.rx_packets++;
970
971 odev->net->stats.rx_bytes += odev->rx_buf_size;
972
973 odev->rx_buf_size = 0;
974 odev->rx_buf_missing = sizeof(struct iphdr);
975 odev->rx_parse_state = WAIT_IP;
976 }
977 break;
978
979 case WAIT_SYNC:
980 D1(" W_S");
981 count = 0;
982 break;
983 default:
984 D1(" ");
985 count--;
986 break;
987 }
988 }
989
990 /* Recovery mechanism for WAIT_SYNC state. */
991 if (is_eop) {
992 if (odev->rx_parse_state == WAIT_SYNC) {
993 odev->rx_parse_state = WAIT_IP;
994 odev->rx_buf_size = 0;
995 odev->rx_buf_missing = sizeof(struct iphdr);
996 }
997 }
998}
999
1000/* Moving data from usb to kernel (in interrupt state) */
1001static void read_bulk_callback(struct urb *urb)
1002{
1003 struct hso_net *odev = urb->context;
1004 struct net_device *net;
1005 int result;
1006 int status = urb->status;
1007
1008 /* is al ok? (Filip: Who's Al ?) */
1009 if (status) {
68a351c5 1010 handle_usb_error(status, __func__, odev->parent);
72dc1c09
GKH		 1011 return;
1012 }
1013
1014 /* Sanity check */
1015 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
1016 D1("BULK IN callback but driver is not active!");
1017 return;
1018 }
1019 usb_mark_last_busy(urb->dev);
1020
1021 net = odev->net;
1022
1023 if (!netif_device_present(net)) {
1024 /* Somebody killed our network interface... */
1025 return;
1026 }
1027
1028 if (odev->parent->port_spec & HSO_INFO_CRC_BUG) {
1029 u32 rest;
1030 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
d9ced80d
JD		 1031 rest = urb->actual_length %
1032 le16_to_cpu(odev->in_endp->wMaxPacketSize);
8e95a202
JP		 1033 if (((rest == 5) || (rest == 6)) &&
1034 !memcmp(((u8 *) urb->transfer_buffer) +
1035 urb->actual_length - 4, crc_check, 4)) {
72dc1c09
GKH		 1036 urb->actual_length -= 4;
1037 }
1038 }
1039
1040 /* do we even have a packet? */
1041 if (urb->actual_length) {
1042 /* Handle the IP stream, add header and push it onto network
1043 * stack if the packet is complete. */
1044 spin_lock(&odev->net_lock);
1045 packetizeRx(odev, urb->transfer_buffer, urb->actual_length,
1046 (urb->transfer_buffer_length >
1047 urb->actual_length) ? 1 : 0);
1048 spin_unlock(&odev->net_lock);
1049 }
1050
1051 /* We are done with this URB, resubmit it. Prep the USB to wait for
1052 * another frame. Reuse same as received. */
1053 usb_fill_bulk_urb(urb,
1054 odev->parent->usb,
1055 usb_rcvbulkpipe(odev->parent->usb,
1056 odev->in_endp->
1057 bEndpointAddress & 0x7F),
1058 urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE,
1059 read_bulk_callback, odev);
1060
1061 /* Give this to the USB subsystem so it can tell us when more data
1062 * arrives. */
1063 result = usb_submit_urb(urb, GFP_ATOMIC);
1064 if (result)
1065 dev_warn(&odev->parent->interface->dev,
8a5c9c49 1066 "%s failed submit mux_bulk_rx_urb %d\n", __func__,
72dc1c09
GKH		 1067 result);
1068}
1069
1070/* Serial driver functions */
1071
ac9720c3 1072static void hso_init_termios(struct ktermios *termios)
72dc1c09 1073{
72dc1c09
GKH		 1074 /*
1075 * The default requirements for this device are:
1076 */
72dc1c09
GKH		 1077 termios->c_iflag &=
1078 ~(IGNBRK /* disable ignore break */
1079 | BRKINT /* disable break causes interrupt */
1080 | PARMRK /* disable mark parity errors */
1081 | ISTRIP /* disable clear high bit of input characters */
1082 | INLCR /* disable translate NL to CR */
1083 | IGNCR /* disable ignore CR */
1084 | ICRNL /* disable translate CR to NL */
1085 | IXON); /* disable enable XON/XOFF flow control */
1086
1087 /* disable postprocess output characters */
1088 termios->c_oflag &= ~OPOST;
1089
1090 termios->c_lflag &=
1091 ~(ECHO /* disable echo input characters */
1092 | ECHONL /* disable echo new line */
1093 | ICANON /* disable erase, kill, werase, and rprnt
1094 special characters */
1095 | ISIG /* disable interrupt, quit, and suspend special
1096 characters */
1097 | IEXTEN); /* disable non-POSIX special characters */
1098
1099 termios->c_cflag &=
1100 ~(CSIZE /* no size */
1101 | PARENB /* disable parity bit */
1102 | CBAUD /* clear current baud rate */
1103 | CBAUDEX); /* clear current buad rate */
1104
1105 termios->c_cflag |= CS8; /* character size 8 bits */
1106
1107 /* baud rate 115200 */
ac9720c3
AC		 1108 tty_termios_encode_baud_rate(termios, 115200, 115200);
1109}
1110
1111static void _hso_serial_set_termios(struct tty_struct *tty,
1112 struct ktermios *old)
1113{
1114 struct hso_serial *serial = get_serial_by_tty(tty);
1115 struct ktermios *termios;
1116
1117 if (!serial) {
1118 printk(KERN_ERR "%s: no tty structures", __func__);
1119 return;
1120 }
1121
1122 D4("port %d", serial->minor);
72dc1c09
GKH		 1123
1124 /*
ac9720c3 1125 * Fix up unsupported bits
72dc1c09 1126 */
ac9720c3
AC		 1127 termios = tty->termios;
1128 termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */
1129
1130 termios->c_cflag &=
1131 ~(CSIZE /* no size */
1132 | PARENB /* disable parity bit */
1133 | CBAUD /* clear current baud rate */
1134 | CBAUDEX); /* clear current buad rate */
1135
1136 termios->c_cflag |= CS8; /* character size 8 bits */
1137
1138 /* baud rate 115200 */
1139 tty_encode_baud_rate(tty, 115200, 115200);
72dc1c09
GKH		 1140}
1141
8ef5ba63
DJB		 1142static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb)
1143{
1144 int result;
8ef5ba63
DJB		 1145 /* We are done with this URB, resubmit it. Prep the USB to wait for
1146 * another frame */
1147 usb_fill_bulk_urb(urb, serial->parent->usb,
1148 usb_rcvbulkpipe(serial->parent->usb,
1149 serial->in_endp->
1150 bEndpointAddress & 0x7F),
1151 urb->transfer_buffer, serial->rx_data_length,
1152 hso_std_serial_read_bulk_callback, serial);
1153 /* Give this to the USB subsystem so it can tell us when more data
1154 * arrives. */
1155 result = usb_submit_urb(urb, GFP_ATOMIC);
1156 if (result) {
1157 dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n",
1158 __func__, result);
1159 }
1160}
1161
1162
1163
1164
1165static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial)
1166{
1167 int count;
1168 struct urb *curr_urb;
1169
1170 while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) {
1171 curr_urb = serial->rx_urb[serial->curr_rx_urb_idx];
1172 count = put_rxbuf_data(curr_urb, serial);
1173 if (count == -1)
1174 return;
1175 if (count == 0) {
1176 serial->curr_rx_urb_idx++;
1177 if (serial->curr_rx_urb_idx >= serial->num_rx_urbs)
1178 serial->curr_rx_urb_idx = 0;
1179 hso_resubmit_rx_bulk_urb(serial, curr_urb);
1180 }
1181 }
1182}
1183
1184static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
1185{
1186 int count = 0;
1187 struct urb *urb;
1188
1189 urb = serial->rx_urb[0];
1190 if (serial->open_count > 0) {
1191 count = put_rxbuf_data(urb, serial);
1192 if (count == -1)
1193 return;
1194 }
1195 /* Re issue a read as long as we receive data. */
1196
1197 if (count == 0 && ((urb->actual_length != 0) ||
1198 (serial->rx_state == RX_PENDING))) {
1199 serial->rx_state = RX_SENT;
1200 hso_mux_serial_read(serial);
1201 } else
1202 serial->rx_state = RX_IDLE;
1203}
1204
1205
1206/* read callback for Diag and CS port */
1207static void hso_std_serial_read_bulk_callback(struct urb *urb)
1208{
1209 struct hso_serial *serial = urb->context;
1210 int status = urb->status;
1211
1212 /* sanity check */
1213 if (!serial) {
1214 D1("serial == NULL");
1215 return;
1216 } else if (status) {
68a351c5 1217 handle_usb_error(status, __func__, serial->parent);
8ef5ba63
DJB		 1218 return;
1219 }
1220
1221 D4("\n--- Got serial_read_bulk callback %02x ---", status);
1222 D1("Actual length = %d\n", urb->actual_length);
1223 DUMP1(urb->transfer_buffer, urb->actual_length);
1224
1225 /* Anyone listening? */
1226 if (serial->open_count == 0)
1227 return;
1228
1229 if (status == 0) {
1230 if (serial->parent->port_spec & HSO_INFO_CRC_BUG) {
1231 u32 rest;
1232 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1233 rest =
1234 urb->actual_length %
d9ced80d 1235 le16_to_cpu(serial->in_endp->wMaxPacketSize);
8e95a202
JP		 1236 if (((rest == 5) || (rest == 6)) &&
1237 !memcmp(((u8 *) urb->transfer_buffer) +
1238 urb->actual_length - 4, crc_check, 4)) {
8ef5ba63
DJB		 1239 urb->actual_length -= 4;
1240 }
1241 }
1242 /* Valid data, handle RX data */
1243 spin_lock(&serial->serial_lock);
1244 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1;
1245 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1246 spin_unlock(&serial->serial_lock);
1247 } else if (status == -ENOENT || status == -ECONNRESET) {
1248 /* Unlinked - check for throttled port. */
1249 D2("Port %d, successfully unlinked urb", serial->minor);
1250 spin_lock(&serial->serial_lock);
1251 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
1252 hso_resubmit_rx_bulk_urb(serial, urb);
1253 spin_unlock(&serial->serial_lock);
1254 } else {
1255 D2("Port %d, status = %d for read urb", serial->minor, status);
1256 return;
1257 }
1258}
1259
1260/*
1261 * This needs to be a tasklet otherwise we will
1262 * end up recursively calling this function.
1263 */
0227abc9 1264static void hso_unthrottle_tasklet(struct hso_serial *serial)
8ef5ba63
DJB		 1265{
1266 unsigned long flags;
1267
1268 spin_lock_irqsave(&serial->serial_lock, flags);
1269 if ((serial->parent->port_spec & HSO_INTF_MUX))
1270 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
1271 else
1272 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1273 spin_unlock_irqrestore(&serial->serial_lock, flags);
1274}
1275
1276static void hso_unthrottle(struct tty_struct *tty)
1277{
1278 struct hso_serial *serial = get_serial_by_tty(tty);
1279
1280 tasklet_hi_schedule(&serial->unthrottle_tasklet);
1281}
1282
0227abc9 1283static void hso_unthrottle_workfunc(struct work_struct *work)
8ef5ba63
DJB		 1284{
1285 struct hso_serial *serial =
1286 container_of(work, struct hso_serial,
1287 retry_unthrottle_workqueue);
1288 hso_unthrottle_tasklet(serial);
1289}
1290
72dc1c09
GKH		 1291/* open the requested serial port */
1292static int hso_serial_open(struct tty_struct *tty, struct file *filp)
1293{
1294 struct hso_serial *serial = get_serial_by_index(tty->index);
ab153d84 1295 int result;
72dc1c09
GKH		 1296
1297 /* sanity check */
1298 if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) {
e136e303 1299 WARN_ON(1);
72dc1c09
GKH		 1300 tty->driver_data = NULL;
1301 D1("Failed to open port");
1302 return -ENODEV;
1303 }
1304
ab153d84 1305 mutex_lock(&serial->parent->mutex);
ab153d84
DM		 1306 result = usb_autopm_get_interface(serial->parent->interface);
1307 if (result < 0)
72dc1c09
GKH		 1308 goto err_out;
1309
1310 D1("Opening %d", serial->minor);
1311 kref_get(&serial->parent->ref);
1312
1313 /* setup */
e136e303 1314 spin_lock_irq(&serial->serial_lock);
72dc1c09 1315 tty->driver_data = serial;
fe41cbb1 1316 tty_kref_put(serial->tty);
e136e303
AC		 1317 serial->tty = tty_kref_get(tty);
1318 spin_unlock_irq(&serial->serial_lock);
72dc1c09 1319
2f9889a2
DM		 1320 /* check for port already opened, if not set the termios */
1321 serial->open_count++;
72dc1c09 1322 if (serial->open_count == 1) {
8ef5ba63 1323 serial->rx_state = RX_IDLE;
72dc1c09
GKH		 1324 /* Force default termio settings */
1325 _hso_serial_set_termios(tty, NULL);
8ef5ba63
DJB		 1326 tasklet_init(&serial->unthrottle_tasklet,
1327 (void (*)(unsigned long))hso_unthrottle_tasklet,
1328 (unsigned long)serial);
1329 INIT_WORK(&serial->retry_unthrottle_workqueue,
1330 hso_unthrottle_workfunc);
ab153d84
DM		 1331 result = hso_start_serial_device(serial->parent, GFP_KERNEL);
1332 if (result) {
72dc1c09
GKH		 1333 hso_stop_serial_device(serial->parent);
1334 serial->open_count--;
ab153d84 1335 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09
GKH		 1336 }
1337 } else {
1338 D1("Port was already open");
1339 }
1340
1341 usb_autopm_put_interface(serial->parent->interface);
1342
1343 /* done */
ab153d84 1344 if (result)
72dc1c09
GKH		 1345 hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0);
1346err_out:
ab153d84
DM		 1347 mutex_unlock(&serial->parent->mutex);
1348 return result;
72dc1c09
GKH		 1349}
1350
1351/* close the requested serial port */
1352static void hso_serial_close(struct tty_struct *tty, struct file *filp)
1353{
1354 struct hso_serial *serial = tty->driver_data;
1355 u8 usb_gone;
1356
1357 D1("Closing serial port");
1358
e136e303
AC		 1359 /* Open failed, no close cleanup required */
1360 if (serial == NULL)
1361 return;
1362
ab153d84 1363 mutex_lock(&serial->parent->mutex);
72dc1c09
GKH		 1364 usb_gone = serial->parent->usb_gone;
1365
1366 if (!usb_gone)
1367 usb_autopm_get_interface(serial->parent->interface);
1368
1369 /* reset the rts and dtr */
1370 /* do the actual close */
1371 serial->open_count--;
dcfcb256 1372
72dc1c09 1373 if (serial->open_count <= 0) {
72dc1c09 1374 serial->open_count = 0;
e136e303
AC		 1375 spin_lock_irq(&serial->serial_lock);
1376 if (serial->tty == tty) {
72dc1c09
GKH		 1377 serial->tty->driver_data = NULL;
1378 serial->tty = NULL;
e136e303 1379 tty_kref_put(tty);
72dc1c09 1380 }
e136e303 1381 spin_unlock_irq(&serial->serial_lock);
72dc1c09
GKH		 1382 if (!usb_gone)
1383 hso_stop_serial_device(serial->parent);
8ef5ba63
DJB		 1384 tasklet_kill(&serial->unthrottle_tasklet);
1385 cancel_work_sync(&serial->retry_unthrottle_workqueue);
72dc1c09 1386 }
8ef5ba63 1387
72dc1c09
GKH		 1388 if (!usb_gone)
1389 usb_autopm_put_interface(serial->parent->interface);
ab153d84
DM		 1390
1391 mutex_unlock(&serial->parent->mutex);
dcfcb256
AK		 1392
1393 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09
GKH		 1394}
1395
1396/* close the requested serial port */
1397static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf,
1398 int count)
1399{
1400 struct hso_serial *serial = get_serial_by_tty(tty);
1401 int space, tx_bytes;
1402 unsigned long flags;
1403
1404 /* sanity check */
1405 if (serial == NULL) {
1406 printk(KERN_ERR "%s: serial is NULL\n", __func__);
1407 return -ENODEV;
1408 }
1409
1410 spin_lock_irqsave(&serial->serial_lock, flags);
1411
1412 space = serial->tx_data_length - serial->tx_buffer_count;
1413 tx_bytes = (count < space) ? count : space;
1414
1415 if (!tx_bytes)
1416 goto out;
1417
1418 memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes);
1419 serial->tx_buffer_count += tx_bytes;
1420
1421out:
1422 spin_unlock_irqrestore(&serial->serial_lock, flags);
1423
1424 hso_kick_transmit(serial);
1425 /* done */
1426 return tx_bytes;
1427}
1428
1429/* how much room is there for writing */
1430static int hso_serial_write_room(struct tty_struct *tty)
1431{
1432 struct hso_serial *serial = get_serial_by_tty(tty);
1433 int room;
1434 unsigned long flags;
1435
1436 spin_lock_irqsave(&serial->serial_lock, flags);
1437 room = serial->tx_data_length - serial->tx_buffer_count;
1438 spin_unlock_irqrestore(&serial->serial_lock, flags);
1439
1440 /* return free room */
1441 return room;
1442}
1443
1444/* setup the term */
1445static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
1446{
1447 struct hso_serial *serial = get_serial_by_tty(tty);
1448 unsigned long flags;
1449
1450 if (old)
1451 D5("Termios called with: cflags new[%d] - old[%d]",
1452 tty->termios->c_cflag, old->c_cflag);
1453
1454 /* the actual setup */
1455 spin_lock_irqsave(&serial->serial_lock, flags);
1456 if (serial->open_count)
1457 _hso_serial_set_termios(tty, old);
1458 else
1459 tty->termios = old;
1460 spin_unlock_irqrestore(&serial->serial_lock, flags);
1461
1462 /* done */
72dc1c09
GKH		 1463}
1464
1465/* how many characters in the buffer */
1466static int hso_serial_chars_in_buffer(struct tty_struct *tty)
1467{
1468 struct hso_serial *serial = get_serial_by_tty(tty);
1469 int chars;
1470 unsigned long flags;
1471
1472 /* sanity check */
1473 if (serial == NULL)
1474 return 0;
1475
1476 spin_lock_irqsave(&serial->serial_lock, flags);
1477 chars = serial->tx_buffer_count;
1478 spin_unlock_irqrestore(&serial->serial_lock, flags);
1479
1480 return chars;
1481}
0227abc9
HE		 1482static int tiocmget_submit_urb(struct hso_serial *serial,
1483 struct hso_tiocmget *tiocmget,
1484 struct usb_device *usb)
542f5482
DJB		 1485{
1486 int result;
1487
1488 if (serial->parent->usb_gone)
1489 return -ENODEV;
1490 usb_fill_int_urb(tiocmget->urb, usb,
1491 usb_rcvintpipe(usb,
1492 tiocmget->endp->
1493 bEndpointAddress & 0x7F),
1494 &tiocmget->serial_state_notification,
1495 sizeof(struct hso_serial_state_notification),
1496 tiocmget_intr_callback, serial,
1497 tiocmget->endp->bInterval);
1498 result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC);
1499 if (result) {
1500 dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__,
1501 result);
1502 }
1503 return result;
1504
1505}
1506
1507static void tiocmget_intr_callback(struct urb *urb)
1508{
1509 struct hso_serial *serial = urb->context;
1510 struct hso_tiocmget *tiocmget;
1511 int status = urb->status;
1512 u16 UART_state_bitmap, prev_UART_state_bitmap;
1513 struct uart_icount *icount;
1514 struct hso_serial_state_notification *serial_state_notification;
1515 struct usb_device *usb;
1516
1517 /* Sanity checks */
1518 if (!serial)
1519 return;
1520 if (status) {
68a351c5 1521 handle_usb_error(status, __func__, serial->parent);
542f5482
DJB		 1522 return;
1523 }
1524 tiocmget = serial->tiocmget;
1525 if (!tiocmget)
1526 return;
1527 usb = serial->parent->usb;
1528 serial_state_notification = &tiocmget->serial_state_notification;
1529 if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE ||
1530 serial_state_notification->bNotification != B_NOTIFICATION ||
1531 le16_to_cpu(serial_state_notification->wValue) != W_VALUE ||
1532 le16_to_cpu(serial_state_notification->wIndex) != W_INDEX ||
1533 le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) {
1534 dev_warn(&usb->dev,
1535 "hso received invalid serial state notification\n");
1536 DUMP(serial_state_notification,
9ce673d5 1537 sizeof(struct hso_serial_state_notification));
542f5482
DJB		 1538 } else {
1539
1540 UART_state_bitmap = le16_to_cpu(serial_state_notification->
1541 UART_state_bitmap);
1542 prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap;
1543 icount = &tiocmget->icount;
1544 spin_lock(&serial->serial_lock);
1545 if ((UART_state_bitmap & B_OVERRUN) !=
1546 (prev_UART_state_bitmap & B_OVERRUN))
1547 icount->parity++;
1548 if ((UART_state_bitmap & B_PARITY) !=
1549 (prev_UART_state_bitmap & B_PARITY))
1550 icount->parity++;
1551 if ((UART_state_bitmap & B_FRAMING) !=
1552 (prev_UART_state_bitmap & B_FRAMING))
1553 icount->frame++;
1554 if ((UART_state_bitmap & B_RING_SIGNAL) &&
1555 !(prev_UART_state_bitmap & B_RING_SIGNAL))
1556 icount->rng++;
1557 if ((UART_state_bitmap & B_BREAK) !=
1558 (prev_UART_state_bitmap & B_BREAK))
1559 icount->brk++;
1560 if ((UART_state_bitmap & B_TX_CARRIER) !=
1561 (prev_UART_state_bitmap & B_TX_CARRIER))
1562 icount->dsr++;
1563 if ((UART_state_bitmap & B_RX_CARRIER) !=
1564 (prev_UART_state_bitmap & B_RX_CARRIER))
1565 icount->dcd++;
1566 tiocmget->prev_UART_state_bitmap = UART_state_bitmap;
1567 spin_unlock(&serial->serial_lock);
1568 tiocmget->intr_completed = 1;
1569 wake_up_interruptible(&tiocmget->waitq);
1570 }
1571 memset(serial_state_notification, 0,
1572 sizeof(struct hso_serial_state_notification));
1573 tiocmget_submit_urb(serial,
1574 tiocmget,
1575 serial->parent->usb);
1576}
1577
1578/*
1579 * next few functions largely stolen from drivers/serial/serial_core.c
1580 */
1581/* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1582 * - mask passed in arg for lines of interest
1583 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1584 * Caller should use TIOCGICOUNT to see which one it was
1585 */
1586static int
1587hso_wait_modem_status(struct hso_serial *serial, unsigned long arg)
1588{
1589 DECLARE_WAITQUEUE(wait, current);
1590 struct uart_icount cprev, cnow;
1591 struct hso_tiocmget *tiocmget;
1592 int ret;
1593
1594 tiocmget = serial->tiocmget;
1595 if (!tiocmget)
1596 return -ENOENT;
1597 /*
1598 * note the counters on entry
1599 */
1600 spin_lock_irq(&serial->serial_lock);
1601 memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount));
1602 spin_unlock_irq(&serial->serial_lock);
1603 add_wait_queue(&tiocmget->waitq, &wait);
1604 for (;;) {
1605 spin_lock_irq(&serial->serial_lock);
1606 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1607 spin_unlock_irq(&serial->serial_lock);
1608 set_current_state(TASK_INTERRUPTIBLE);
1609 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1610 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1611 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) {
1612 ret = 0;
1613 break;
1614 }
1615 schedule();
1616 /* see if a signal did it */
1617 if (signal_pending(current)) {
1618 ret = -ERESTARTSYS;
1619 break;
1620 }
1621 cprev = cnow;
1622 }
1623 current->state = TASK_RUNNING;
1624 remove_wait_queue(&tiocmget->waitq, &wait);
1625
1626 return ret;
1627}
1628
1629/*
1630 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
1631 * Return: write counters to the user passed counter struct
1632 * NB: both 1->0 and 0->1 transitions are counted except for
1633 * RI where only 0->1 is counted.
1634 */
0bca1b91
AC		 1635static int hso_get_count(struct tty_struct *tty,
1636 struct serial_icounter_struct *icount)
542f5482 1637{
542f5482 1638 struct uart_icount cnow;
0bca1b91 1639 struct hso_serial *serial = get_serial_by_tty(tty);
542f5482
DJB		 1640 struct hso_tiocmget *tiocmget = serial->tiocmget;
1641
7011e660
DR		 1642 memset(&icount, 0, sizeof(struct serial_icounter_struct));
1643
542f5482
DJB		 1644 if (!tiocmget)
1645 return -ENOENT;
1646 spin_lock_irq(&serial->serial_lock);
1647 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1648 spin_unlock_irq(&serial->serial_lock);
1649
0bca1b91
AC		 1650 icount->cts = cnow.cts;
1651 icount->dsr = cnow.dsr;
1652 icount->rng = cnow.rng;
1653 icount->dcd = cnow.dcd;
1654 icount->rx = cnow.rx;
1655 icount->tx = cnow.tx;
1656 icount->frame = cnow.frame;
1657 icount->overrun = cnow.overrun;
1658 icount->parity = cnow.parity;
1659 icount->brk = cnow.brk;
1660 icount->buf_overrun = cnow.buf_overrun;
542f5482 1661
0bca1b91 1662 return 0;
542f5482
DJB		 1663}
1664
72dc1c09
GKH		 1665
1666static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file)
1667{
542f5482 1668 int retval;
72dc1c09 1669 struct hso_serial *serial = get_serial_by_tty(tty);
542f5482
DJB		 1670 struct hso_tiocmget *tiocmget;
1671 u16 UART_state_bitmap;
72dc1c09
GKH		 1672
1673 /* sanity check */
1674 if (!serial) {
1675 D1("no tty structures");
1676 return -EINVAL;
1677 }
542f5482
DJB		 1678 spin_lock_irq(&serial->serial_lock);
1679 retval = ((serial->rts_state) ? TIOCM_RTS : 0) |
72dc1c09 1680 ((serial->dtr_state) ? TIOCM_DTR : 0);
542f5482
DJB		 1681 tiocmget = serial->tiocmget;
1682 if (tiocmget) {
1683
1684 UART_state_bitmap = le16_to_cpu(
1685 tiocmget->prev_UART_state_bitmap);
1686 if (UART_state_bitmap & B_RING_SIGNAL)
1687 retval |= TIOCM_RNG;
1688 if (UART_state_bitmap & B_RX_CARRIER)
1689 retval |= TIOCM_CD;
1690 if (UART_state_bitmap & B_TX_CARRIER)
1691 retval |= TIOCM_DSR;
1692 }
1693 spin_unlock_irq(&serial->serial_lock);
1694 return retval;
72dc1c09
GKH		 1695}
1696
1697static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
1698 unsigned int set, unsigned int clear)
1699{
1700 int val = 0;
1701 unsigned long flags;
1702 int if_num;
1703 struct hso_serial *serial = get_serial_by_tty(tty);
1704
1705 /* sanity check */
1706 if (!serial) {
1707 D1("no tty structures");
1708 return -EINVAL;
1709 }
0e0367e9
JD		 1710
1711 if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM)
1712 return -EINVAL;
1713
72dc1c09
GKH		 1714 if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber;
1715
1716 spin_lock_irqsave(&serial->serial_lock, flags);
1717 if (set & TIOCM_RTS)
1718 serial->rts_state = 1;
1719 if (set & TIOCM_DTR)
1720 serial->dtr_state = 1;
1721
1722 if (clear & TIOCM_RTS)
1723 serial->rts_state = 0;
1724 if (clear & TIOCM_DTR)
1725 serial->dtr_state = 0;
1726
1727 if (serial->dtr_state)
1728 val |= 0x01;
1729 if (serial->rts_state)
1730 val |= 0x02;
1731
1732 spin_unlock_irqrestore(&serial->serial_lock, flags);
1733
1734 return usb_control_msg(serial->parent->usb,
1735 usb_rcvctrlpipe(serial->parent->usb, 0), 0x22,
1736 0x21, val, if_num, NULL, 0,
1737 USB_CTRL_SET_TIMEOUT);
1738}
1739
542f5482
DJB		 1740static int hso_serial_ioctl(struct tty_struct *tty, struct file *file,
1741 unsigned int cmd, unsigned long arg)
1742{
1743 struct hso_serial *serial = get_serial_by_tty(tty);
542f5482
DJB		 1744 int ret = 0;
1745 D4("IOCTL cmd: %d, arg: %ld", cmd, arg);
1746
1747 if (!serial)
1748 return -ENODEV;
1749 switch (cmd) {
1750 case TIOCMIWAIT:
1751 ret = hso_wait_modem_status(serial, arg);
1752 break;
542f5482
DJB		 1753 default:
1754 ret = -ENOIOCTLCMD;
1755 break;
1756 }
1757 return ret;
1758}
1759
1760
72dc1c09
GKH		 1761/* starts a transmit */
1762static void hso_kick_transmit(struct hso_serial *serial)
1763{
1764 u8 *temp;
1765 unsigned long flags;
1766 int res;
1767
1768 spin_lock_irqsave(&serial->serial_lock, flags);
1769 if (!serial->tx_buffer_count)
1770 goto out;
1771
1772 if (serial->tx_urb_used)
1773 goto out;
1774
1775 /* Wakeup USB interface if necessary */
1776 if (hso_get_activity(serial->parent) == -EAGAIN)
1777 goto out;
1778
1779 /* Switch pointers around to avoid memcpy */
1780 temp = serial->tx_buffer;
1781 serial->tx_buffer = serial->tx_data;
1782 serial->tx_data = temp;
1783 serial->tx_data_count = serial->tx_buffer_count;
1784 serial->tx_buffer_count = 0;
1785
1786 /* If temp is set, it means we switched buffers */
1787 if (temp && serial->write_data) {
1788 res = serial->write_data(serial);
1789 if (res >= 0)
1790 serial->tx_urb_used = 1;
1791 }
1792out:
1793 spin_unlock_irqrestore(&serial->serial_lock, flags);
1794}
1795
1796/* make a request (for reading and writing data to muxed serial port) */
1797static int mux_device_request(struct hso_serial *serial, u8 type, u16 port,
1798 struct urb *ctrl_urb,
1799 struct usb_ctrlrequest *ctrl_req,
1800 u8 *ctrl_urb_data, u32 size)
1801{
1802 int result;
1803 int pipe;
1804
1805 /* Sanity check */
1806 if (!serial || !ctrl_urb || !ctrl_req) {
1807 printk(KERN_ERR "%s: Wrong arguments\n", __func__);
1808 return -EINVAL;
1809 }
1810
1811 /* initialize */
1812 ctrl_req->wValue = 0;
b74f62c1
DJB		 1813 ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port));
1814 ctrl_req->wLength = cpu_to_le16(size);
72dc1c09
GKH		 1815
1816 if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) {
1817 /* Reading command */
1818 ctrl_req->bRequestType = USB_DIR_IN |
1819 USB_TYPE_OPTION_VENDOR |
1820 USB_RECIP_INTERFACE;
1821 ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
1822 pipe = usb_rcvctrlpipe(serial->parent->usb, 0);
1823 } else {
1824 /* Writing command */
1825 ctrl_req->bRequestType = USB_DIR_OUT |
1826 USB_TYPE_OPTION_VENDOR |
1827 USB_RECIP_INTERFACE;
1828 ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND;
1829 pipe = usb_sndctrlpipe(serial->parent->usb, 0);
1830 }
1831 /* syslog */
1832 D2("%s command (%02x) len: %d, port: %d",
1833 type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write",
1834 ctrl_req->bRequestType, ctrl_req->wLength, port);
1835
1836 /* Load ctrl urb */
1837 ctrl_urb->transfer_flags = 0;
1838 usb_fill_control_urb(ctrl_urb,
1839 serial->parent->usb,
1840 pipe,
1841 (u8 *) ctrl_req,
1842 ctrl_urb_data, size, ctrl_callback, serial);
1843 /* Send it on merry way */
1844 result = usb_submit_urb(ctrl_urb, GFP_ATOMIC);
1845 if (result) {
1846 dev_err(&ctrl_urb->dev->dev,
8a5c9c49 1847 "%s failed submit ctrl_urb %d type %d\n", __func__,
72dc1c09
GKH		 1848 result, type);
1849 return result;
1850 }
1851
1852 /* done */
1853 return size;
1854}
1855
1856/* called by intr_callback when read occurs */
1857static int hso_mux_serial_read(struct hso_serial *serial)
1858{
1859 if (!serial)
1860 return -EINVAL;
1861
1862 /* clean data */
1863 memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE);
1864 /* make the request */
1865
1866 if (serial->num_rx_urbs != 1) {
1867 dev_err(&serial->parent->interface->dev,
1868 "ERROR: mux'd reads with multiple buffers "
1869 "not possible\n");
1870 return 0;
1871 }
1872 return mux_device_request(serial,
1873 USB_CDC_GET_ENCAPSULATED_RESPONSE,
1874 serial->parent->port_spec & HSO_PORT_MASK,
1875 serial->rx_urb[0],
1876 &serial->ctrl_req_rx,
1877 serial->rx_data[0], serial->rx_data_length);
1878}
1879
1880/* used for muxed serial port callback (muxed serial read) */
1881static void intr_callback(struct urb *urb)
1882{
1883 struct hso_shared_int *shared_int = urb->context;
1884 struct hso_serial *serial;
1885 unsigned char *port_req;
1886 int status = urb->status;
1887 int i;
1888
1889 usb_mark_last_busy(urb->dev);
1890
1891 /* sanity check */
1892 if (!shared_int)
1893 return;
1894
1895 /* status check */
1896 if (status) {
68a351c5 1897 handle_usb_error(status, __func__, NULL);
72dc1c09
GKH		 1898 return;
1899 }
1900 D4("\n--- Got intr callback 0x%02X ---", status);
1901
1902 /* what request? */
1903 port_req = urb->transfer_buffer;
1904 D4(" port_req = 0x%.2X\n", *port_req);
1905 /* loop over all muxed ports to find the one sending this */
1906 for (i = 0; i < 8; i++) {
1907 /* max 8 channels on MUX */
1908 if (*port_req & (1 << i)) {
1909 serial = get_serial_by_shared_int_and_type(shared_int,
1910 (1 << i));
1911 if (serial != NULL) {
1912 D1("Pending read interrupt on port %d\n", i);
8ef5ba63 1913 spin_lock(&serial->serial_lock);
f4763e96
JD		 1914 if (serial->rx_state == RX_IDLE &&
1915 serial->open_count > 0) {
72dc1c09
GKH		 1916 /* Setup and send a ctrl req read on
1917 * port i */
f4763e96 1918 if (!serial->rx_urb_filled[0]) {
8ef5ba63
DJB		 1919 serial->rx_state = RX_SENT;
1920 hso_mux_serial_read(serial);
1921 } else
1922 serial->rx_state = RX_PENDING;
72dc1c09 1923 } else {
f4763e96
JD		 1924 D1("Already a read pending on "
1925 "port %d or port not open\n", i);
72dc1c09 1926 }
8ef5ba63 1927 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 1928 }
1929 }
1930 }
1931 /* Resubmit interrupt urb */
1932 hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC);
1933}
1934
1935/* called for writing to muxed serial port */
1936static int hso_mux_serial_write_data(struct hso_serial *serial)
1937{
1938 if (NULL == serial)
1939 return -EINVAL;
1940
1941 return mux_device_request(serial,
1942 USB_CDC_SEND_ENCAPSULATED_COMMAND,
1943 serial->parent->port_spec & HSO_PORT_MASK,
1944 serial->tx_urb,
1945 &serial->ctrl_req_tx,
1946 serial->tx_data, serial->tx_data_count);
1947}
1948
1949/* write callback for Diag and CS port */
1950static void hso_std_serial_write_bulk_callback(struct urb *urb)
1951{
1952 struct hso_serial *serial = urb->context;
1953 int status = urb->status;
e136e303 1954 struct tty_struct *tty;
72dc1c09
GKH		 1955
1956 /* sanity check */
1957 if (!serial) {
1958 D1("serial == NULL");
1959 return;
1960 }
1961
1962 spin_lock(&serial->serial_lock);
1963 serial->tx_urb_used = 0;
e136e303 1964 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 1965 spin_unlock(&serial->serial_lock);
1966 if (status) {
68a351c5 1967 handle_usb_error(status, __func__, serial->parent);
e136e303 1968 tty_kref_put(tty);
72dc1c09
GKH		 1969 return;
1970 }
1971 hso_put_activity(serial->parent);
e136e303
AC		 1972 if (tty) {
1973 tty_wakeup(tty);
1974 tty_kref_put(tty);
1975 }
72dc1c09
GKH		 1976 hso_kick_transmit(serial);
1977
1978 D1(" ");
72dc1c09
GKH		 1979}
1980
1981/* called for writing diag or CS serial port */
1982static int hso_std_serial_write_data(struct hso_serial *serial)
1983{
1984 int count = serial->tx_data_count;
1985 int result;
1986
1987 usb_fill_bulk_urb(serial->tx_urb,
1988 serial->parent->usb,
1989 usb_sndbulkpipe(serial->parent->usb,
1990 serial->out_endp->
1991 bEndpointAddress & 0x7F),
1992 serial->tx_data, serial->tx_data_count,
1993 hso_std_serial_write_bulk_callback, serial);
1994
1995 result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC);
1996 if (result) {
1997 dev_warn(&serial->parent->usb->dev,
1998 "Failed to submit urb - res %d\n", result);
1999 return result;
2000 }
2001
2002 return count;
2003}
2004
2005/* callback after read or write on muxed serial port */
2006static void ctrl_callback(struct urb *urb)
2007{
2008 struct hso_serial *serial = urb->context;
2009 struct usb_ctrlrequest *req;
2010 int status = urb->status;
e136e303 2011 struct tty_struct *tty;
72dc1c09
GKH		 2012
2013 /* sanity check */
2014 if (!serial)
2015 return;
2016
2017 spin_lock(&serial->serial_lock);
2018 serial->tx_urb_used = 0;
e136e303 2019 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 2020 spin_unlock(&serial->serial_lock);
2021 if (status) {
68a351c5 2022 handle_usb_error(status, __func__, serial->parent);
e136e303 2023 tty_kref_put(tty);
72dc1c09
GKH		 2024 return;
2025 }
2026
2027 /* what request? */
2028 req = (struct usb_ctrlrequest *)(urb->setup_packet);
2029 D4("\n--- Got muxed ctrl callback 0x%02X ---", status);
2030 D4("Actual length of urb = %d\n", urb->actual_length);
2031 DUMP1(urb->transfer_buffer, urb->actual_length);
2032
2033 if (req->bRequestType ==
2034 (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) {
2035 /* response to a read command */
8ef5ba63
DJB		 2036 serial->rx_urb_filled[0] = 1;
2037 spin_lock(&serial->serial_lock);
2038 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
2039 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 2040 } else {
2041 hso_put_activity(serial->parent);
e136e303
AC		 2042 if (tty)
2043 tty_wakeup(tty);
72dc1c09
GKH		 2044 /* response to a write command */
2045 hso_kick_transmit(serial);
2046 }
e136e303 2047 tty_kref_put(tty);
72dc1c09
GKH		 2048}
2049
2050/* handle RX data for serial port */
8ef5ba63 2051static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
72dc1c09 2052{
e136e303 2053 struct tty_struct *tty;
8ef5ba63
DJB		 2054 int write_length_remaining = 0;
2055 int curr_write_len;
e136e303 2056
72dc1c09
GKH		 2057 /* Sanity check */
2058 if (urb == NULL || serial == NULL) {
2059 D1("serial = NULL");
8ef5ba63 2060 return -2;
72dc1c09
GKH		 2061 }
2062
d45eb81c 2063 /* All callers to put_rxbuf_data hold serial_lock */
e136e303 2064 tty = tty_kref_get(serial->tty);
e136e303 2065
72dc1c09 2066 /* Push data to tty */
8ef5ba63
DJB		 2067 if (tty) {
2068 write_length_remaining = urb->actual_length -
2069 serial->curr_rx_urb_offset;
72dc1c09 2070 D1("data to push to tty");
8ef5ba63 2071 while (write_length_remaining) {
5839b414
DJB		 2072 if (test_bit(TTY_THROTTLED, &tty->flags)) {
2073 tty_kref_put(tty);
8ef5ba63 2074 return -1;
5839b414 2075 }
8ef5ba63
DJB		 2076 curr_write_len = tty_insert_flip_string
2077 (tty, urb->transfer_buffer +
2078 serial->curr_rx_urb_offset,
2079 write_length_remaining);
2080 serial->curr_rx_urb_offset += curr_write_len;
2081 write_length_remaining -= curr_write_len;
2082 tty_flip_buffer_push(tty);
72dc1c09 2083 }
72dc1c09 2084 }
8ef5ba63
DJB		 2085 if (write_length_remaining == 0) {
2086 serial->curr_rx_urb_offset = 0;
2087 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
72dc1c09 2088 }
e136e303 2089 tty_kref_put(tty);
8ef5ba63 2090 return write_length_remaining;
72dc1c09
GKH		 2091}
2092
8ef5ba63 2093
72dc1c09
GKH		 2094/* Base driver functions */
2095
2096static void hso_log_port(struct hso_device *hso_dev)
2097{
2098 char *port_type;
2099 char port_dev[20];
2100
2101 switch (hso_dev->port_spec & HSO_PORT_MASK) {
2102 case HSO_PORT_CONTROL:
2103 port_type = "Control";
2104 break;
2105 case HSO_PORT_APP:
2106 port_type = "Application";
2107 break;
2108 case HSO_PORT_GPS:
2109 port_type = "GPS";
2110 break;
2111 case HSO_PORT_GPS_CONTROL:
2112 port_type = "GPS control";
2113 break;
2114 case HSO_PORT_APP2:
2115 port_type = "Application2";
2116 break;
2117 case HSO_PORT_PCSC:
2118 port_type = "PCSC";
2119 break;
2120 case HSO_PORT_DIAG:
2121 port_type = "Diagnostic";
2122 break;
2123 case HSO_PORT_DIAG2:
2124 port_type = "Diagnostic2";
2125 break;
2126 case HSO_PORT_MODEM:
2127 port_type = "Modem";
2128 break;
2129 case HSO_PORT_NETWORK:
2130 port_type = "Network";
2131 break;
2132 default:
2133 port_type = "Unknown";
2134 break;
2135 }
2136 if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2137 sprintf(port_dev, "%s", dev2net(hso_dev)->net->name);
2138 } else
2139 sprintf(port_dev, "/dev/%s%d", tty_filename,
2140 dev2ser(hso_dev)->minor);
2141
2142 dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n",
2143 port_type, port_dev);
2144}
2145
2146static int hso_start_net_device(struct hso_device *hso_dev)
2147{
2148 int i, result = 0;
2149 struct hso_net *hso_net = dev2net(hso_dev);
2150
2151 if (!hso_net)
2152 return -ENODEV;
2153
2154 /* send URBs for all read buffers */
2155 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2156
2157 /* Prep a receive URB */
2158 usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i],
2159 hso_dev->usb,
2160 usb_rcvbulkpipe(hso_dev->usb,
2161 hso_net->in_endp->
2162 bEndpointAddress & 0x7F),
2163 hso_net->mux_bulk_rx_buf_pool[i],
2164 MUX_BULK_RX_BUF_SIZE, read_bulk_callback,
2165 hso_net);
2166
2167 /* Put it out there so the device can send us stuff */
2168 result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i],
2169 GFP_NOIO);
2170 if (result)
2171 dev_warn(&hso_dev->usb->dev,
2172 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__,
2173 i, result);
2174 }
2175
2176 return result;
2177}
2178
2179static int hso_stop_net_device(struct hso_device *hso_dev)
2180{
2181 int i;
2182 struct hso_net *hso_net = dev2net(hso_dev);
2183
2184 if (!hso_net)
2185 return -ENODEV;
2186
2187 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2188 if (hso_net->mux_bulk_rx_urb_pool[i])
2189 usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2190
2191 }
2192 if (hso_net->mux_bulk_tx_urb)
2193 usb_kill_urb(hso_net->mux_bulk_tx_urb);
2194
2195 return 0;
2196}
2197
2198static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags)
2199{
2200 int i, result = 0;
2201 struct hso_serial *serial = dev2ser(hso_dev);
2202
2203 if (!serial)
2204 return -ENODEV;
2205
2206 /* If it is not the MUX port fill in and submit a bulk urb (already
2207 * allocated in hso_serial_start) */
2208 if (!(serial->parent->port_spec & HSO_INTF_MUX)) {
2209 for (i = 0; i < serial->num_rx_urbs; i++) {
2210 usb_fill_bulk_urb(serial->rx_urb[i],
2211 serial->parent->usb,
2212 usb_rcvbulkpipe(serial->parent->usb,
2213 serial->in_endp->
2214 bEndpointAddress &
2215 0x7F),
2216 serial->rx_data[i],
2217 serial->rx_data_length,
2218 hso_std_serial_read_bulk_callback,
2219 serial);
2220 result = usb_submit_urb(serial->rx_urb[i], flags);
2221 if (result) {
2222 dev_warn(&serial->parent->usb->dev,
2223 "Failed to submit urb - res %d\n",
2224 result);
2225 break;
2226 }
2227 }
2228 } else {
2229 mutex_lock(&serial->shared_int->shared_int_lock);
2230 if (!serial->shared_int->use_count) {
2231 result =
2232 hso_mux_submit_intr_urb(serial->shared_int,
2233 hso_dev->usb, flags);
2234 }
2235 serial->shared_int->use_count++;
2236 mutex_unlock(&serial->shared_int->shared_int_lock);
2237 }
542f5482
DJB		 2238 if (serial->tiocmget)
2239 tiocmget_submit_urb(serial,
2240 serial->tiocmget,
2241 serial->parent->usb);
72dc1c09
GKH		 2242 return result;
2243}
2244
2245static int hso_stop_serial_device(struct hso_device *hso_dev)
2246{
2247 int i;
2248 struct hso_serial *serial = dev2ser(hso_dev);
542f5482 2249 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2250
2251 if (!serial)
2252 return -ENODEV;
2253
2254 for (i = 0; i < serial->num_rx_urbs; i++) {
8ef5ba63 2255 if (serial->rx_urb[i]) {
72dc1c09 2256 usb_kill_urb(serial->rx_urb[i]);
8ef5ba63
DJB		 2257 serial->rx_urb_filled[i] = 0;
2258 }
72dc1c09 2259 }
8ef5ba63
DJB		 2260 serial->curr_rx_urb_idx = 0;
2261 serial->curr_rx_urb_offset = 0;
72dc1c09
GKH		 2262
2263 if (serial->tx_urb)
2264 usb_kill_urb(serial->tx_urb);
2265
2266 if (serial->shared_int) {
2267 mutex_lock(&serial->shared_int->shared_int_lock);
2268 if (serial->shared_int->use_count &&
2269 (--serial->shared_int->use_count == 0)) {
2270 struct urb *urb;
2271
2272 urb = serial->shared_int->shared_intr_urb;
2273 if (urb)
2274 usb_kill_urb(urb);
2275 }
2276 mutex_unlock(&serial->shared_int->shared_int_lock);
2277 }
542f5482
DJB		 2278 tiocmget = serial->tiocmget;
2279 if (tiocmget) {
2280 wake_up_interruptible(&tiocmget->waitq);
2281 usb_kill_urb(tiocmget->urb);
2282 }
72dc1c09
GKH		 2283
2284 return 0;
2285}
2286
2287static void hso_serial_common_free(struct hso_serial *serial)
2288{
2289 int i;
2290
2291 if (serial->parent->dev)
2292 device_remove_file(serial->parent->dev, &dev_attr_hsotype);
2293
2294 tty_unregister_device(tty_drv, serial->minor);
2295
2296 for (i = 0; i < serial->num_rx_urbs; i++) {
2297 /* unlink and free RX URB */
2298 usb_free_urb(serial->rx_urb[i]);
2299 /* free the RX buffer */
2300 kfree(serial->rx_data[i]);
2301 }
2302
2303 /* unlink and free TX URB */
2304 usb_free_urb(serial->tx_urb);
2305 kfree(serial->tx_data);
2306}
2307
2308static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
2309 int rx_size, int tx_size)
2310{
2311 struct device *dev;
2312 int minor;
2313 int i;
2314
2315 minor = get_free_serial_index();
2316 if (minor < 0)
2317 goto exit;
2318
2319 /* register our minor number */
2320 serial->parent->dev = tty_register_device(tty_drv, minor,
2321 &serial->parent->interface->dev);
2322 dev = serial->parent->dev;
1aec5bdf 2323 dev_set_drvdata(dev, serial->parent);
72dc1c09
GKH		 2324 i = device_create_file(dev, &dev_attr_hsotype);
2325
2326 /* fill in specific data for later use */
2327 serial->minor = minor;
2328 serial->magic = HSO_SERIAL_MAGIC;
2329 spin_lock_init(&serial->serial_lock);
2330 serial->num_rx_urbs = num_urbs;
2331
2332 /* RX, allocate urb and initialize */
2333
2334 /* prepare our RX buffer */
2335 serial->rx_data_length = rx_size;
2336 for (i = 0; i < serial->num_rx_urbs; i++) {
2337 serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
2338 if (!serial->rx_urb[i]) {
2339 dev_err(dev, "Could not allocate urb?\n");
2340 goto exit;
2341 }
2342 serial->rx_urb[i]->transfer_buffer = NULL;
2343 serial->rx_urb[i]->transfer_buffer_length = 0;
2344 serial->rx_data[i] = kzalloc(serial->rx_data_length,
2345 GFP_KERNEL);
2346 if (!serial->rx_data[i]) {
2347 dev_err(dev, "%s - Out of memory\n", __func__);
2348 goto exit;
2349 }
2350 }
2351
2352 /* TX, allocate urb and initialize */
2353 serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2354 if (!serial->tx_urb) {
2355 dev_err(dev, "Could not allocate urb?\n");
2356 goto exit;
2357 }
2358 serial->tx_urb->transfer_buffer = NULL;
2359 serial->tx_urb->transfer_buffer_length = 0;
2360 /* prepare our TX buffer */
2361 serial->tx_data_count = 0;
2362 serial->tx_buffer_count = 0;
2363 serial->tx_data_length = tx_size;
2364 serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL);
2365 if (!serial->tx_data) {
8a5c9c49 2366 dev_err(dev, "%s - Out of memory\n", __func__);
72dc1c09
GKH		 2367 goto exit;
2368 }
2369 serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL);
2370 if (!serial->tx_buffer) {
8a5c9c49 2371 dev_err(dev, "%s - Out of memory\n", __func__);
72dc1c09
GKH		 2372 goto exit;
2373 }
2374
2375 return 0;
2376exit:
2377 hso_serial_common_free(serial);
2378 return -1;
2379}
2380
72dc1c09
GKH		 2381/* Creates a general hso device */
2382static struct hso_device *hso_create_device(struct usb_interface *intf,
2383 int port_spec)
2384{
2385 struct hso_device *hso_dev;
2386
2387 hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC);
2388 if (!hso_dev)
2389 return NULL;
2390
2391 hso_dev->port_spec = port_spec;
2392 hso_dev->usb = interface_to_usbdev(intf);
2393 hso_dev->interface = intf;
2394 kref_init(&hso_dev->ref);
ab153d84
DM		 2395 mutex_init(&hso_dev->mutex);
2396
72dc1c09
GKH		 2397 INIT_WORK(&hso_dev->async_get_intf, async_get_intf);
2398 INIT_WORK(&hso_dev->async_put_intf, async_put_intf);
68a351c5 2399 INIT_WORK(&hso_dev->reset_device, reset_device);
72dc1c09
GKH		 2400
2401 return hso_dev;
2402}
2403
2404/* Removes a network device in the network device table */
2405static int remove_net_device(struct hso_device *hso_dev)
2406{
2407 int i;
2408
2409 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2410 if (network_table[i] == hso_dev) {
2411 network_table[i] = NULL;
2412 break;
2413 }
2414 }
2415 if (i == HSO_MAX_NET_DEVICES)
2416 return -1;
2417 return 0;
2418}
2419
2420/* Frees our network device */
2421static void hso_free_net_device(struct hso_device *hso_dev)
2422{
2423 int i;
2424 struct hso_net *hso_net = dev2net(hso_dev);
2425
2426 if (!hso_net)
2427 return;
2428
3b7d2b31
JD		 2429 remove_net_device(hso_net->parent);
2430
2431 if (hso_net->net) {
2432 unregister_netdev(hso_net->net);
2433 free_netdev(hso_net->net);
2434 }
2435
72dc1c09
GKH		 2436 /* start freeing */
2437 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2438 usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2439 kfree(hso_net->mux_bulk_rx_buf_pool[i]);
3b7d2b31 2440 hso_net->mux_bulk_rx_buf_pool[i] = NULL;
72dc1c09
GKH		 2441 }
2442 usb_free_urb(hso_net->mux_bulk_tx_urb);
2443 kfree(hso_net->mux_bulk_tx_buf);
3b7d2b31 2444 hso_net->mux_bulk_tx_buf = NULL;
ab153d84 2445
e44578ea 2446 kfree(hso_dev);
72dc1c09
GKH		 2447}
2448
c266cb4e
SH		 2449static const struct net_device_ops hso_netdev_ops = {
2450 .ndo_open = hso_net_open,
2451 .ndo_stop = hso_net_close,
2452 .ndo_start_xmit = hso_net_start_xmit,
2453 .ndo_tx_timeout = hso_net_tx_timeout,
2454};
2455
72dc1c09
GKH		 2456/* initialize the network interface */
2457static void hso_net_init(struct net_device *net)
2458{
2459 struct hso_net *hso_net = netdev_priv(net);
2460
2461 D1("sizeof hso_net is %d", (int)sizeof(*hso_net));
2462
2463 /* fill in the other fields */
c266cb4e 2464 net->netdev_ops = &hso_netdev_ops;
72dc1c09
GKH		 2465 net->watchdog_timeo = HSO_NET_TX_TIMEOUT;
2466 net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
2467 net->type = ARPHRD_NONE;
2468 net->mtu = DEFAULT_MTU - 14;
2469 net->tx_queue_len = 10;
2470 SET_ETHTOOL_OPS(net, &ops);
2471
2472 /* and initialize the semaphore */
2473 spin_lock_init(&hso_net->net_lock);
2474}
2475
2476/* Adds a network device in the network device table */
2477static int add_net_device(struct hso_device *hso_dev)
2478{
2479 int i;
2480
2481 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2482 if (network_table[i] == NULL) {
2483 network_table[i] = hso_dev;
2484 break;
2485 }
2486 }
2487 if (i == HSO_MAX_NET_DEVICES)
2488 return -1;
2489 return 0;
2490}
2491
19d337df 2492static int hso_rfkill_set_block(void *data, bool blocked)
72dc1c09
GKH		 2493{
2494 struct hso_device *hso_dev = data;
19d337df 2495 int enabled = !blocked;
72dc1c09
GKH		 2496 int rv;
2497
ab153d84 2498 mutex_lock(&hso_dev->mutex);
72dc1c09
GKH		 2499 if (hso_dev->usb_gone)
2500 rv = 0;
2501 else
2502 rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0),
2503 enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
2504 USB_CTRL_SET_TIMEOUT);
ab153d84 2505 mutex_unlock(&hso_dev->mutex);
72dc1c09
GKH		 2506 return rv;
2507}
2508
19d337df
JB		 2509static const struct rfkill_ops hso_rfkill_ops = {
2510 .set_block = hso_rfkill_set_block,
2511};
2512
72dc1c09
GKH		 2513/* Creates and sets up everything for rfkill */
2514static void hso_create_rfkill(struct hso_device *hso_dev,
2515 struct usb_interface *interface)
2516{
2517 struct hso_net *hso_net = dev2net(hso_dev);
939a9516 2518 struct device *dev = &hso_net->net->dev;
72dc1c09
GKH		 2519 char *rfkn;
2520
72dc1c09 2521 rfkn = kzalloc(20, GFP_KERNEL);
19d337df 2522 if (!rfkn)
939a9516 2523 dev_err(dev, "%s - Out of memory\n", __func__);
19d337df 2524
72dc1c09
GKH		 2525 snprintf(rfkn, 20, "hso-%d",
2526 interface->altsetting->desc.bInterfaceNumber);
19d337df
JB		 2527
2528 hso_net->rfkill = rfkill_alloc(rfkn,
2529 &interface_to_usbdev(interface)->dev,
2530 RFKILL_TYPE_WWAN,
2531 &hso_rfkill_ops, hso_dev);
2532 if (!hso_net->rfkill) {
2533 dev_err(dev, "%s - Out of memory\n", __func__);
2534 kfree(rfkn);
2535 return;
2536 }
72dc1c09 2537 if (rfkill_register(hso_net->rfkill) < 0) {
19d337df 2538 rfkill_destroy(hso_net->rfkill);
72dc1c09 2539 kfree(rfkn);
939a9516
JM		 2540 hso_net->rfkill = NULL;
2541 dev_err(dev, "%s - Failed to register rfkill\n", __func__);
72dc1c09
GKH		 2542 return;
2543 }
2544}
2545
384912ed
MH		 2546static struct device_type hso_type = {
2547 .name = "wwan",
2548};
2549
72dc1c09 2550/* Creates our network device */
0de8ca59
JD		 2551static struct hso_device *hso_create_net_device(struct usb_interface *interface,
2552 int port_spec)
72dc1c09
GKH		 2553{
2554 int result, i;
2555 struct net_device *net;
2556 struct hso_net *hso_net;
2557 struct hso_device *hso_dev;
2558
0de8ca59 2559 hso_dev = hso_create_device(interface, port_spec);
72dc1c09
GKH		 2560 if (!hso_dev)
2561 return NULL;
2562
2563 /* allocate our network device, then we can put in our private data */
2564 /* call hso_net_init to do the basic initialization */
2565 net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init);
2566 if (!net) {
2567 dev_err(&interface->dev, "Unable to create ethernet device\n");
2568 goto exit;
2569 }
2570
2571 hso_net = netdev_priv(net);
2572
2573 hso_dev->port_data.dev_net = hso_net;
2574 hso_net->net = net;
2575 hso_net->parent = hso_dev;
2576
2577 hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2578 USB_DIR_IN);
2579 if (!hso_net->in_endp) {
2580 dev_err(&interface->dev, "Can't find BULK IN endpoint\n");
2581 goto exit;
2582 }
2583 hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2584 USB_DIR_OUT);
2585 if (!hso_net->out_endp) {
2586 dev_err(&interface->dev, "Can't find BULK OUT endpoint\n");
2587 goto exit;
2588 }
2589 SET_NETDEV_DEV(net, &interface->dev);
384912ed 2590 SET_NETDEV_DEVTYPE(net, &hso_type);
72dc1c09
GKH		 2591
2592 /* registering our net device */
2593 result = register_netdev(net);
2594 if (result) {
2595 dev_err(&interface->dev, "Failed to register device\n");
2596 goto exit;
2597 }
2598
2599 /* start allocating */
2600 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2601 hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL);
2602 if (!hso_net->mux_bulk_rx_urb_pool[i]) {
2603 dev_err(&interface->dev, "Could not allocate rx urb\n");
2604 goto exit;
2605 }
2606 hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE,
2607 GFP_KERNEL);
2608 if (!hso_net->mux_bulk_rx_buf_pool[i]) {
2609 dev_err(&interface->dev, "Could not allocate rx buf\n");
2610 goto exit;
2611 }
2612 }
2613 hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2614 if (!hso_net->mux_bulk_tx_urb) {
2615 dev_err(&interface->dev, "Could not allocate tx urb\n");
2616 goto exit;
2617 }
2618 hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL);
2619 if (!hso_net->mux_bulk_tx_buf) {
2620 dev_err(&interface->dev, "Could not allocate tx buf\n");
2621 goto exit;
2622 }
2623
2624 add_net_device(hso_dev);
2625
2626 hso_log_port(hso_dev);
2627
2628 hso_create_rfkill(hso_dev, interface);
2629
2630 return hso_dev;
2631exit:
2632 hso_free_net_device(hso_dev);
2633 return NULL;
2634}
2635
542f5482
DJB		 2636static void hso_free_tiomget(struct hso_serial *serial)
2637{
2638 struct hso_tiocmget *tiocmget = serial->tiocmget;
2639 if (tiocmget) {
542f5482
DJB		 2640 if (tiocmget->urb) {
2641 usb_free_urb(tiocmget->urb);
2642 tiocmget->urb = NULL;
2643 }
2644 serial->tiocmget = NULL;
3b7d2b31 2645 kfree(tiocmget);
542f5482
DJB		 2646
2647 }
2648}
2649
72dc1c09
GKH		 2650/* Frees an AT channel ( goes for both mux and non-mux ) */
2651static void hso_free_serial_device(struct hso_device *hso_dev)
2652{
2653 struct hso_serial *serial = dev2ser(hso_dev);
2654
2655 if (!serial)
2656 return;
2657 set_serial_by_index(serial->minor, NULL);
2658
2659 hso_serial_common_free(serial);
2660
2661 if (serial->shared_int) {
2662 mutex_lock(&serial->shared_int->shared_int_lock);
2663 if (--serial->shared_int->ref_count == 0)
2664 hso_free_shared_int(serial->shared_int);
2665 else
2666 mutex_unlock(&serial->shared_int->shared_int_lock);
2667 }
542f5482 2668 hso_free_tiomget(serial);
72dc1c09 2669 kfree(serial);
e44578ea 2670 kfree(hso_dev);
72dc1c09
GKH		 2671}
2672
2673/* Creates a bulk AT channel */
2674static struct hso_device *hso_create_bulk_serial_device(
2675 struct usb_interface *interface, int port)
2676{
2677 struct hso_device *hso_dev;
2678 struct hso_serial *serial;
2679 int num_urbs;
542f5482 2680 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2681
2682 hso_dev = hso_create_device(interface, port);
2683 if (!hso_dev)
2684 return NULL;
2685
2686 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2687 if (!serial)
2688 goto exit;
2689
2690 serial->parent = hso_dev;
2691 hso_dev->port_data.dev_serial = serial;
2692
58eb17f1 2693 if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
72dc1c09 2694 num_urbs = 2;
542f5482
DJB		 2695 serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
2696 GFP_KERNEL);
2697 /* it isn't going to break our heart if serial->tiocmget
2698 * allocation fails don't bother checking this.
2699 */
2700 if (serial->tiocmget) {
2701 tiocmget = serial->tiocmget;
2702 tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
2703 if (tiocmget->urb) {
2704 mutex_init(&tiocmget->mutex);
2705 init_waitqueue_head(&tiocmget->waitq);
2706 tiocmget->endp = hso_get_ep(
2707 interface,
2708 USB_ENDPOINT_XFER_INT,
2709 USB_DIR_IN);
2710 } else
2711 hso_free_tiomget(serial);
2712 }
2713 }
72dc1c09
GKH		 2714 else
2715 num_urbs = 1;
2716
2717 if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE,
2718 BULK_URB_TX_SIZE))
2719 goto exit;
2720
2721 serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2722 USB_DIR_IN);
2723 if (!serial->in_endp) {
2724 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2725 goto exit2;
72dc1c09
GKH		 2726 }
2727
2728 if (!
2729 (serial->out_endp =
2730 hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) {
2731 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2732 goto exit2;
72dc1c09
GKH		 2733 }
2734
2735 serial->write_data = hso_std_serial_write_data;
2736
2737 /* and record this serial */
2738 set_serial_by_index(serial->minor, serial);
2739
2740 /* setup the proc dirs and files if needed */
2741 hso_log_port(hso_dev);
2742
2743 /* done, return it */
2744 return hso_dev;
e57b641d
AB		 2745
2746exit2:
2747 hso_serial_common_free(serial);
72dc1c09 2748exit:
542f5482 2749 hso_free_tiomget(serial);
72dc1c09 2750 kfree(serial);
e44578ea 2751 kfree(hso_dev);
72dc1c09
GKH		 2752 return NULL;
2753}
2754
2755/* Creates a multiplexed AT channel */
2756static
2757struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
2758 int port,
2759 struct hso_shared_int *mux)
2760{
2761 struct hso_device *hso_dev;
2762 struct hso_serial *serial;
2763 int port_spec;
2764
2765 port_spec = HSO_INTF_MUX;
2766 port_spec &= ~HSO_PORT_MASK;
2767
2768 port_spec |= hso_mux_to_port(port);
2769 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT)
2770 return NULL;
2771
2772 hso_dev = hso_create_device(interface, port_spec);
2773 if (!hso_dev)
2774 return NULL;
2775
2776 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2777 if (!serial)
2778 goto exit;
2779
2780 hso_dev->port_data.dev_serial = serial;
2781 serial->parent = hso_dev;
2782
2783 if (hso_serial_common_create
2784 (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE))
2785 goto exit;
2786
2787 serial->tx_data_length--;
2788 serial->write_data = hso_mux_serial_write_data;
2789
2790 serial->shared_int = mux;
2791 mutex_lock(&serial->shared_int->shared_int_lock);
2792 serial->shared_int->ref_count++;
2793 mutex_unlock(&serial->shared_int->shared_int_lock);
2794
2795 /* and record this serial */
2796 set_serial_by_index(serial->minor, serial);
2797
2798 /* setup the proc dirs and files if needed */
2799 hso_log_port(hso_dev);
2800
2801 /* done, return it */
2802 return hso_dev;
2803
2804exit:
2805 if (serial) {
2806 tty_unregister_device(tty_drv, serial->minor);
2807 kfree(serial);
2808 }
2809 if (hso_dev)
e44578ea 2810 kfree(hso_dev);
72dc1c09
GKH		 2811 return NULL;
2812
2813}
2814
2815static void hso_free_shared_int(struct hso_shared_int *mux)
2816{
2817 usb_free_urb(mux->shared_intr_urb);
2818 kfree(mux->shared_intr_buf);
2819 mutex_unlock(&mux->shared_int_lock);
2820 kfree(mux);
2821}
2822
2823static
2824struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface)
2825{
2826 struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL);
2827
2828 if (!mux)
2829 return NULL;
2830
2831 mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT,
2832 USB_DIR_IN);
2833 if (!mux->intr_endp) {
2834 dev_err(&interface->dev, "Can't find INT IN endpoint\n");
2835 goto exit;
2836 }
2837
2838 mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL);
2839 if (!mux->shared_intr_urb) {
8a5c9c49 2840 dev_err(&interface->dev, "Could not allocate intr urb?\n");
72dc1c09
GKH		 2841 goto exit;
2842 }
d9ced80d
JD		 2843 mux->shared_intr_buf =
2844 kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize),
2845 GFP_KERNEL);
72dc1c09 2846 if (!mux->shared_intr_buf) {
8a5c9c49 2847 dev_err(&interface->dev, "Could not allocate intr buf?\n");
72dc1c09
GKH		 2848 goto exit;
2849 }
2850
2851 mutex_init(&mux->shared_int_lock);
2852
2853 return mux;
2854
2855exit:
2856 kfree(mux->shared_intr_buf);
2857 usb_free_urb(mux->shared_intr_urb);
2858 kfree(mux);
2859 return NULL;
2860}
2861
2862/* Gets the port spec for a certain interface */
2863static int hso_get_config_data(struct usb_interface *interface)
2864{
2865 struct usb_device *usbdev = interface_to_usbdev(interface);
2866 u8 config_data[17];
2867 u32 if_num = interface->altsetting->desc.bInterfaceNumber;
2868 s32 result;
2869
2870 if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
2871 0x86, 0xC0, 0, 0, config_data, 17,
2872 USB_CTRL_SET_TIMEOUT) != 0x11) {
2873 return -EIO;
2874 }
2875
2876 switch (config_data[if_num]) {
2877 case 0x0:
2878 result = 0;
2879 break;
2880 case 0x1:
2881 result = HSO_PORT_DIAG;
2882 break;
2883 case 0x2:
2884 result = HSO_PORT_GPS;
2885 break;
2886 case 0x3:
2887 result = HSO_PORT_GPS_CONTROL;
2888 break;
2889 case 0x4:
2890 result = HSO_PORT_APP;
2891 break;
2892 case 0x5:
2893 result = HSO_PORT_APP2;
2894 break;
2895 case 0x6:
2896 result = HSO_PORT_CONTROL;
2897 break;
2898 case 0x7:
2899 result = HSO_PORT_NETWORK;
2900 break;
2901 case 0x8:
2902 result = HSO_PORT_MODEM;
2903 break;
2904 case 0x9:
2905 result = HSO_PORT_MSD;
2906 break;
2907 case 0xa:
2908 result = HSO_PORT_PCSC;
2909 break;
2910 case 0xb:
2911 result = HSO_PORT_VOICE;
2912 break;
2913 default:
2914 result = 0;
2915 }
2916
2917 if (result)
2918 result |= HSO_INTF_BULK;
2919
2920 if (config_data[16] & 0x1)
2921 result |= HSO_INFO_CRC_BUG;
2922
2923 return result;
2924}
2925
2926/* called once for each interface upon device insertion */
2927static int hso_probe(struct usb_interface *interface,
2928 const struct usb_device_id *id)
2929{
2930 int mux, i, if_num, port_spec;
2931 unsigned char port_mask;
2932 struct hso_device *hso_dev = NULL;
2933 struct hso_shared_int *shared_int;
2934 struct hso_device *tmp_dev = NULL;
2935
2936 if_num = interface->altsetting->desc.bInterfaceNumber;
2937
2938 /* Get the interface/port specification from either driver_info or from
2939 * the device itself */
2940 if (id->driver_info)
2941 port_spec = ((u32 *)(id->driver_info))[if_num];
2942 else
2943 port_spec = hso_get_config_data(interface);
2944
2945 if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
2946 dev_err(&interface->dev, "Not our interface\n");
2947 return -ENODEV;
2948 }
2949 /* Check if we need to switch to alt interfaces prior to port
2950 * configuration */
2951 if (interface->num_altsetting > 1)
2952 usb_set_interface(interface_to_usbdev(interface), if_num, 1);
2953 interface->needs_remote_wakeup = 1;
2954
2955 /* Allocate new hso device(s) */
2956 switch (port_spec & HSO_INTF_MASK) {
2957 case HSO_INTF_MUX:
2958 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2959 /* Create the network device */
2960 if (!disable_net) {
0de8ca59
JD		 2961 hso_dev = hso_create_net_device(interface,
2962 port_spec);
72dc1c09
GKH		 2963 if (!hso_dev)
2964 goto exit;
2965 tmp_dev = hso_dev;
2966 }
2967 }
2968
2969 if (hso_get_mux_ports(interface, &port_mask))
2970 /* TODO: de-allocate everything */
2971 goto exit;
2972
2973 shared_int = hso_create_shared_int(interface);
2974 if (!shared_int)
2975 goto exit;
2976
2977 for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) {
2978 if (port_mask & i) {
2979 hso_dev = hso_create_mux_serial_device(
2980 interface, i, shared_int);
2981 if (!hso_dev)
2982 goto exit;
2983 }
2984 }
2985
2986 if (tmp_dev)
2987 hso_dev = tmp_dev;
2988 break;
2989
2990 case HSO_INTF_BULK:
2991 /* It's a regular bulk interface */
8e65c0ec
FA		 2992 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2993 if (!disable_net)
2994 hso_dev =
2995 hso_create_net_device(interface, port_spec);
2996 } else {
72dc1c09
GKH		 2997 hso_dev =
2998 hso_create_bulk_serial_device(interface, port_spec);
8e65c0ec 2999 }
72dc1c09
GKH		 3000 if (!hso_dev)
3001 goto exit;
3002 break;
3003 default:
3004 goto exit;
3005 }
3006
72dc1c09
GKH		 3007 /* save our data pointer in this device */
3008 usb_set_intfdata(interface, hso_dev);
3009
3010 /* done */
3011 return 0;
3012exit:
3013 hso_free_interface(interface);
3014 return -ENODEV;
3015}
3016
3017/* device removed, cleaning up */
3018static void hso_disconnect(struct usb_interface *interface)
3019{
3020 hso_free_interface(interface);
3021
3022 /* remove reference of our private data */
3023 usb_set_intfdata(interface, NULL);
72dc1c09
GKH		 3024}
3025
3026static void async_get_intf(struct work_struct *data)
3027{
3028 struct hso_device *hso_dev =
3029 container_of(data, struct hso_device, async_get_intf);
3030 usb_autopm_get_interface(hso_dev->interface);
3031}
3032
3033static void async_put_intf(struct work_struct *data)
3034{
3035 struct hso_device *hso_dev =
3036 container_of(data, struct hso_device, async_put_intf);
3037 usb_autopm_put_interface(hso_dev->interface);
3038}
3039
3040static int hso_get_activity(struct hso_device *hso_dev)
3041{
3042 if (hso_dev->usb->state == USB_STATE_SUSPENDED) {
3043 if (!hso_dev->is_active) {
3044 hso_dev->is_active = 1;
3045 schedule_work(&hso_dev->async_get_intf);
3046 }
3047 }
3048
3049 if (hso_dev->usb->state != USB_STATE_CONFIGURED)
3050 return -EAGAIN;
3051
3052 usb_mark_last_busy(hso_dev->usb);
3053
3054 return 0;
3055}
3056
3057static int hso_put_activity(struct hso_device *hso_dev)
3058{
3059 if (hso_dev->usb->state != USB_STATE_SUSPENDED) {
3060 if (hso_dev->is_active) {
3061 hso_dev->is_active = 0;
3062 schedule_work(&hso_dev->async_put_intf);
3063 return -EAGAIN;
3064 }
3065 }
3066 hso_dev->is_active = 0;
3067 return 0;
3068}
3069
3070/* called by kernel when we need to suspend device */
3071static int hso_suspend(struct usb_interface *iface, pm_message_t message)
3072{
3073 int i, result;
3074
3075 /* Stop all serial ports */
3076 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3077 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3078 result = hso_stop_serial_device(serial_table[i]);
3079 if (result)
3080 goto out;
3081 }
3082 }
3083
3084 /* Stop all network ports */
3085 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3086 if (network_table[i] &&
3087 (network_table[i]->interface == iface)) {
3088 result = hso_stop_net_device(network_table[i]);
3089 if (result)
3090 goto out;
3091 }
3092 }
3093
3094out:
3095 return 0;
3096}
3097
3098/* called by kernel when we need to resume device */
3099static int hso_resume(struct usb_interface *iface)
3100{
3101 int i, result = 0;
3102 struct hso_net *hso_net;
3103
3104 /* Start all serial ports */
3105 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3106 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3107 if (dev2ser(serial_table[i])->open_count) {
3108 result =
3109 hso_start_serial_device(serial_table[i], GFP_NOIO);
3110 hso_kick_transmit(dev2ser(serial_table[i]));
3111 if (result)
3112 goto out;
3113 }
3114 }
3115 }
3116
3117 /* Start all network ports */
3118 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3119 if (network_table[i] &&
3120 (network_table[i]->interface == iface)) {
3121 hso_net = dev2net(network_table[i]);
89930b7b
DJB		 3122 if (hso_net->flags & IFF_UP) {
3123 /* First transmit any lingering data,
3124 then restart the device. */
3125 if (hso_net->skb_tx_buf) {
3126 dev_dbg(&iface->dev,
3127 "Transmitting"
3128 " lingering data\n");
3129 hso_net_start_xmit(hso_net->skb_tx_buf,
3130 hso_net->net);
3131 hso_net->skb_tx_buf = NULL;
3132 }
3133 result = hso_start_net_device(network_table[i]);
3134 if (result)
3135 goto out;
72dc1c09 3136 }
72dc1c09
GKH		 3137 }
3138 }
3139
3140out:
3141 return result;
3142}
3143
68a351c5
JD		 3144static void reset_device(struct work_struct *data)
3145{
3146 struct hso_device *hso_dev =
3147 container_of(data, struct hso_device, reset_device);
3148 struct usb_device *usb = hso_dev->usb;
3149 int result;
3150
3151 if (hso_dev->usb_gone) {
3152 D1("No reset during disconnect\n");
3153 } else {
3154 result = usb_lock_device_for_reset(usb, hso_dev->interface);
3155 if (result < 0)
3156 D1("unable to lock device for reset: %d\n", result);
3157 else {
3158 usb_reset_device(usb);
3159 usb_unlock_device(usb);
3160 }
3161 }
3162}
3163
72dc1c09
GKH		 3164static void hso_serial_ref_free(struct kref *ref)
3165{
3166 struct hso_device *hso_dev = container_of(ref, struct hso_device, ref);
3167
3168 hso_free_serial_device(hso_dev);
3169}
3170
3171static void hso_free_interface(struct usb_interface *interface)
3172{
3173 struct hso_serial *hso_dev;
e136e303 3174 struct tty_struct *tty;
72dc1c09
GKH		 3175 int i;
3176
3177 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
8e95a202
JP		 3178 if (serial_table[i] &&
3179 (serial_table[i]->interface == interface)) {
72dc1c09 3180 hso_dev = dev2ser(serial_table[i]);
e136e303
AC		 3181 spin_lock_irq(&hso_dev->serial_lock);
3182 tty = tty_kref_get(hso_dev->tty);
3183 spin_unlock_irq(&hso_dev->serial_lock);
3184 if (tty)
3185 tty_hangup(tty);
ab153d84 3186 mutex_lock(&hso_dev->parent->mutex);
e136e303 3187 tty_kref_put(tty);
72dc1c09 3188 hso_dev->parent->usb_gone = 1;
ab153d84
DM		 3189 mutex_unlock(&hso_dev->parent->mutex);
3190 kref_put(&serial_table[i]->ref, hso_serial_ref_free);
72dc1c09
GKH		 3191 }
3192 }
3193
3194 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
8e95a202
JP		 3195 if (network_table[i] &&
3196 (network_table[i]->interface == interface)) {
72dc1c09
GKH		 3197 struct rfkill *rfk = dev2net(network_table[i])->rfkill;
3198 /* hso_stop_net_device doesn't stop the net queue since
3199 * traffic needs to start it again when suspended */
3200 netif_stop_queue(dev2net(network_table[i])->net);
3201 hso_stop_net_device(network_table[i]);
3202 cancel_work_sync(&network_table[i]->async_put_intf);
3203 cancel_work_sync(&network_table[i]->async_get_intf);
19d337df 3204 if (rfk) {
72dc1c09 3205 rfkill_unregister(rfk);
19d337df
JB		 3206 rfkill_destroy(rfk);
3207 }
72dc1c09
GKH		 3208 hso_free_net_device(network_table[i]);
3209 }
3210 }
3211}
3212
3213/* Helper functions */
3214
3215/* Get the endpoint ! */
3216static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
3217 int type, int dir)
3218{
3219 int i;
3220 struct usb_host_interface *iface = intf->cur_altsetting;
3221 struct usb_endpoint_descriptor *endp;
3222
3223 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3224 endp = &iface->endpoint[i].desc;
3225 if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) &&
f201a8a4 3226 (usb_endpoint_type(endp) == type))
72dc1c09
GKH		 3227 return endp;
3228 }
3229
3230 return NULL;
3231}
3232
3233/* Get the byte that describes which ports are enabled */
3234static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports)
3235{
3236 int i;
3237 struct usb_host_interface *iface = intf->cur_altsetting;
3238
3239 if (iface->extralen == 3) {
3240 *ports = iface->extra[2];
3241 return 0;
3242 }
3243
3244 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3245 if (iface->endpoint[i].extralen == 3) {
3246 *ports = iface->endpoint[i].extra[2];
3247 return 0;
3248 }
3249 }
3250
3251 return -1;
3252}
3253
3254/* interrupt urb needs to be submitted, used for serial read of muxed port */
3255static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int,
3256 struct usb_device *usb, gfp_t gfp)
3257{
3258 int result;
3259
3260 usb_fill_int_urb(shared_int->shared_intr_urb, usb,
3261 usb_rcvintpipe(usb,
3262 shared_int->intr_endp->bEndpointAddress & 0x7F),
3263 shared_int->shared_intr_buf,
d9ced80d 3264 1,
72dc1c09
GKH		 3265 intr_callback, shared_int,
3266 shared_int->intr_endp->bInterval);
3267
3268 result = usb_submit_urb(shared_int->shared_intr_urb, gfp);
3269 if (result)
8a5c9c49 3270 dev_warn(&usb->dev, "%s failed mux_intr_urb %d\n", __func__,
72dc1c09
GKH		 3271 result);
3272
3273 return result;
3274}
3275
3276/* operations setup of the serial interface */
6c59f569 3277static const struct tty_operations hso_serial_ops = {
72dc1c09
GKH		 3278 .open = hso_serial_open,
3279 .close = hso_serial_close,
3280 .write = hso_serial_write,
3281 .write_room = hso_serial_write_room,
542f5482 3282 .ioctl = hso_serial_ioctl,
72dc1c09
GKH		 3283 .set_termios = hso_serial_set_termios,
3284 .chars_in_buffer = hso_serial_chars_in_buffer,
3285 .tiocmget = hso_serial_tiocmget,
3286 .tiocmset = hso_serial_tiocmset,
0bca1b91 3287 .get_icount = hso_get_count,
8ef5ba63 3288 .unthrottle = hso_unthrottle
72dc1c09
GKH		 3289};
3290
3291static struct usb_driver hso_driver = {
3292 .name = driver_name,
3293 .probe = hso_probe,
3294 .disconnect = hso_disconnect,
3295 .id_table = hso_ids,
3296 .suspend = hso_suspend,
3297 .resume = hso_resume,
9c8f92ae 3298 .reset_resume = hso_resume,
72dc1c09
GKH		 3299 .supports_autosuspend = 1,
3300};
3301
3302static int __init hso_init(void)
3303{
3304 int i;
3305 int result;
3306
3307 /* put it in the log */
3308 printk(KERN_INFO "hso: %s\n", version);
3309
3310 /* Initialise the serial table semaphore and table */
3311 spin_lock_init(&serial_table_lock);
3312 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++)
3313 serial_table[i] = NULL;
3314
3315 /* allocate our driver using the proper amount of supported minors */
3316 tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS);
3317 if (!tty_drv)
3318 return -ENOMEM;
3319
3320 /* fill in all needed values */
3321 tty_drv->magic = TTY_DRIVER_MAGIC;
3322 tty_drv->owner = THIS_MODULE;
3323 tty_drv->driver_name = driver_name;
3324 tty_drv->name = tty_filename;
3325
3326 /* if major number is provided as parameter, use that one */
3327 if (tty_major)
3328 tty_drv->major = tty_major;
3329
3330 tty_drv->minor_start = 0;
3331 tty_drv->num = HSO_SERIAL_TTY_MINORS;
3332 tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
3333 tty_drv->subtype = SERIAL_TYPE_NORMAL;
3334 tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
3335 tty_drv->init_termios = tty_std_termios;
ac9720c3 3336 hso_init_termios(&tty_drv->init_termios);
72dc1c09
GKH		 3337 tty_set_operations(tty_drv, &hso_serial_ops);
3338
3339 /* register the tty driver */
3340 result = tty_register_driver(tty_drv);
3341 if (result) {
3342 printk(KERN_ERR "%s - tty_register_driver failed(%d)\n",
3343 __func__, result);
3344 return result;
3345 }
3346
3347 /* register this module as an usb driver */
3348 result = usb_register(&hso_driver);
3349 if (result) {
3350 printk(KERN_ERR "Could not register hso driver? error: %d\n",
3351 result);
3352 /* cleanup serial interface */
3353 tty_unregister_driver(tty_drv);
3354 return result;
3355 }
3356
3357 /* done */
3358 return 0;
3359}
3360
3361static void __exit hso_exit(void)
3362{
3363 printk(KERN_INFO "hso: unloaded\n");
3364
3365 tty_unregister_driver(tty_drv);
3366 /* deregister the usb driver */
3367 usb_deregister(&hso_driver);
3368}
3369
3370/* Module definitions */
3371module_init(hso_init);
3372module_exit(hso_exit);
3373
3374MODULE_AUTHOR(MOD_AUTHOR);
3375MODULE_DESCRIPTION(MOD_DESCRIPTION);
3376MODULE_LICENSE(MOD_LICENSE);
72dc1c09
GKH		 3377
3378/* change the debug level (eg: insmod hso.ko debug=0x04) */
3379MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
3380module_param(debug, int, S_IRUGO | S_IWUSR);
3381
3382/* set the major tty number (eg: insmod hso.ko tty_major=245) */
3383MODULE_PARM_DESC(tty_major, "Set the major tty number");
3384module_param(tty_major, int, S_IRUGO | S_IWUSR);
3385
3386/* disable network interface (eg: insmod hso.ko disable_net=1) */
3387MODULE_PARM_DESC(disable_net, "Disable the network interface");
3388module_param(disable_net, int, S_IRUGO | S_IWUSR);
Linux kernel - Deliverables
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