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hso: Fix for 5 sec timeouts with v2.x firmware
[net-next-2.6.git] / drivers / net / usb / hso.c
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72dc1c09
GKH		 1/******************************************************************************
2 *
3 * Driver for Option High Speed Mobile Devices.
4 *
5 * Copyright (C) 2008 Option International
11cd29b0
DJB		 6 * Filip Aben <f.aben@option.com>
7 * Denis Joseph Barrow <d.barow@option.com>
3b7d2b31 8 * Jan Dumon <j.dumon@option.com>
72dc1c09
GKH		 9 * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd)
10 * <ajb@spheresystems.co.uk>
11 * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
12 * Copyright (C) 2008 Novell, Inc.
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
26 * USA
27 *
28 *
29 *****************************************************************************/
30
31/******************************************************************************
32 *
33 * Description of the device:
34 *
35 * Interface 0: Contains the IP network interface on the bulk end points.
36 * The multiplexed serial ports are using the interrupt and
37 * control endpoints.
38 * Interrupt contains a bitmap telling which multiplexed
39 * serialport needs servicing.
40 *
41 * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the
42 * port is opened, as this have a huge impact on the network port
43 * throughput.
44 *
542f5482
DJB		 45 * Interface 2: Standard modem interface - circuit switched interface, this
46 * can be used to make a standard ppp connection however it
47 * should not be used in conjunction with the IP network interface
48 * enabled for USB performance reasons i.e. if using this set
49 * ideally disable_net=1.
72dc1c09
GKH		 50 *
51 *****************************************************************************/
52
53#include <linux/sched.h>
54#include <linux/slab.h>
55#include <linux/init.h>
56#include <linux/delay.h>
57#include <linux/netdevice.h>
58#include <linux/module.h>
59#include <linux/ethtool.h>
60#include <linux/usb.h>
61#include <linux/timer.h>
62#include <linux/tty.h>
63#include <linux/tty_driver.h>
64#include <linux/tty_flip.h>
65#include <linux/kmod.h>
66#include <linux/rfkill.h>
67#include <linux/ip.h>
68#include <linux/uaccess.h>
69#include <linux/usb/cdc.h>
70#include <net/arp.h>
71#include <asm/byteorder.h>
542f5482
DJB		 72#include <linux/serial_core.h>
73#include <linux/serial.h>
72dc1c09
GKH		 74
75
76#define DRIVER_VERSION "1.2"
77#define MOD_AUTHOR "Option Wireless"
78#define MOD_DESCRIPTION "USB High Speed Option driver"
79#define MOD_LICENSE "GPL"
80
81#define HSO_MAX_NET_DEVICES 10
82#define HSO__MAX_MTU 2048
83#define DEFAULT_MTU 1500
84#define DEFAULT_MRU 1500
85
86#define CTRL_URB_RX_SIZE 1024
87#define CTRL_URB_TX_SIZE 64
88
89#define BULK_URB_RX_SIZE 4096
90#define BULK_URB_TX_SIZE 8192
91
92#define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU
93#define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU
94#define MUX_BULK_RX_BUF_COUNT 4
95#define USB_TYPE_OPTION_VENDOR 0x20
96
97/* These definitions are used with the struct hso_net flags element */
98/* - use *_bit operations on it. (bit indices not values.) */
99#define HSO_NET_RUNNING 0
100
101#define HSO_NET_TX_TIMEOUT (HZ*10)
102
72dc1c09
GKH		 103#define HSO_SERIAL_MAGIC 0x48534f31
104
105/* Number of ttys to handle */
106#define HSO_SERIAL_TTY_MINORS 256
107
108#define MAX_RX_URBS 2
109
0235f641
GKH		 110static inline struct hso_serial *get_serial_by_tty(struct tty_struct *tty)
111{
112 if (tty)
113 return tty->driver_data;
114 return NULL;
115}
72dc1c09
GKH		 116
117/*****************************************************************************/
118/* Debugging functions */
119/*****************************************************************************/
120#define D__(lvl_, fmt, arg...) \
121 do { \
122 printk(lvl_ "[%d:%s]: " fmt "\n", \
123 __LINE__, __func__, ## arg); \
124 } while (0)
125
126#define D_(lvl, args...) \
127 do { \
128 if (lvl & debug) \
129 D__(KERN_INFO, args); \
130 } while (0)
131
132#define D1(args...) D_(0x01, ##args)
133#define D2(args...) D_(0x02, ##args)
134#define D3(args...) D_(0x04, ##args)
135#define D4(args...) D_(0x08, ##args)
136#define D5(args...) D_(0x10, ##args)
137
138/*****************************************************************************/
139/* Enumerators */
140/*****************************************************************************/
141enum pkt_parse_state {
142 WAIT_IP,
143 WAIT_DATA,
144 WAIT_SYNC
145};
146
147/*****************************************************************************/
148/* Structs */
149/*****************************************************************************/
150
151struct hso_shared_int {
152 struct usb_endpoint_descriptor *intr_endp;
153 void *shared_intr_buf;
154 struct urb *shared_intr_urb;
155 struct usb_device *usb;
156 int use_count;
157 int ref_count;
158 struct mutex shared_int_lock;
159};
160
161struct hso_net {
162 struct hso_device *parent;
163 struct net_device *net;
164 struct rfkill *rfkill;
165
166 struct usb_endpoint_descriptor *in_endp;
167 struct usb_endpoint_descriptor *out_endp;
168
169 struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT];
170 struct urb *mux_bulk_tx_urb;
171 void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT];
172 void *mux_bulk_tx_buf;
173
174 struct sk_buff *skb_rx_buf;
175 struct sk_buff *skb_tx_buf;
176
177 enum pkt_parse_state rx_parse_state;
178 spinlock_t net_lock;
179
180 unsigned short rx_buf_size;
181 unsigned short rx_buf_missing;
182 struct iphdr rx_ip_hdr;
183
184 unsigned long flags;
185};
186
8ef5ba63
DJB		 187enum rx_ctrl_state{
188 RX_IDLE,
189 RX_SENT,
190 RX_PENDING
191};
192
542f5482
DJB		 193#define BM_REQUEST_TYPE (0xa1)
194#define B_NOTIFICATION (0x20)
195#define W_VALUE (0x0)
196#define W_INDEX (0x2)
197#define W_LENGTH (0x2)
198
199#define B_OVERRUN (0x1<<6)
200#define B_PARITY (0x1<<5)
201#define B_FRAMING (0x1<<4)
202#define B_RING_SIGNAL (0x1<<3)
203#define B_BREAK (0x1<<2)
204#define B_TX_CARRIER (0x1<<1)
205#define B_RX_CARRIER (0x1<<0)
206
207struct hso_serial_state_notification {
208 u8 bmRequestType;
209 u8 bNotification;
210 u16 wValue;
211 u16 wIndex;
212 u16 wLength;
213 u16 UART_state_bitmap;
214} __attribute__((packed));
215
216struct hso_tiocmget {
217 struct mutex mutex;
218 wait_queue_head_t waitq;
219 int intr_completed;
220 struct usb_endpoint_descriptor *endp;
221 struct urb *urb;
222 struct hso_serial_state_notification serial_state_notification;
223 u16 prev_UART_state_bitmap;
224 struct uart_icount icount;
225};
226
227
72dc1c09
GKH		 228struct hso_serial {
229 struct hso_device *parent;
230 int magic;
231 u8 minor;
232
233 struct hso_shared_int *shared_int;
234
235 /* rx/tx urb could be either a bulk urb or a control urb depending
236 on which serial port it is used on. */
237 struct urb *rx_urb[MAX_RX_URBS];
238 u8 num_rx_urbs;
239 u8 *rx_data[MAX_RX_URBS];
240 u16 rx_data_length; /* should contain allocated length */
241
242 struct urb *tx_urb;
243 u8 *tx_data;
244 u8 *tx_buffer;
245 u16 tx_data_length; /* should contain allocated length */
246 u16 tx_data_count;
247 u16 tx_buffer_count;
248 struct usb_ctrlrequest ctrl_req_tx;
249 struct usb_ctrlrequest ctrl_req_rx;
250
251 struct usb_endpoint_descriptor *in_endp;
252 struct usb_endpoint_descriptor *out_endp;
253
8ef5ba63 254 enum rx_ctrl_state rx_state;
72dc1c09
GKH		 255 u8 rts_state;
256 u8 dtr_state;
257 unsigned tx_urb_used:1;
258
259 /* from usb_serial_port */
260 struct tty_struct *tty;
261 int open_count;
262 spinlock_t serial_lock;
263
264 int (*write_data) (struct hso_serial *serial);
542f5482 265 struct hso_tiocmget *tiocmget;
8ef5ba63
DJB		 266 /* Hacks required to get flow control
267 * working on the serial receive buffers
268 * so as not to drop characters on the floor.
269 */
270 int curr_rx_urb_idx;
271 u16 curr_rx_urb_offset;
272 u8 rx_urb_filled[MAX_RX_URBS];
273 struct tasklet_struct unthrottle_tasklet;
274 struct work_struct retry_unthrottle_workqueue;
72dc1c09
GKH		 275};
276
277struct hso_device {
278 union {
279 struct hso_serial *dev_serial;
280 struct hso_net *dev_net;
281 } port_data;
282
283 u32 port_spec;
284
285 u8 is_active;
286 u8 usb_gone;
287 struct work_struct async_get_intf;
288 struct work_struct async_put_intf;
68a351c5 289 struct work_struct reset_device;
72dc1c09
GKH		 290
291 struct usb_device *usb;
292 struct usb_interface *interface;
293
294 struct device *dev;
295 struct kref ref;
ab153d84 296 struct mutex mutex;
72dc1c09
GKH		 297};
298
299/* Type of interface */
300#define HSO_INTF_MASK 0xFF00
301#define HSO_INTF_MUX 0x0100
302#define HSO_INTF_BULK 0x0200
303
304/* Type of port */
305#define HSO_PORT_MASK 0xFF
306#define HSO_PORT_NO_PORT 0x0
307#define HSO_PORT_CONTROL 0x1
308#define HSO_PORT_APP 0x2
309#define HSO_PORT_GPS 0x3
310#define HSO_PORT_PCSC 0x4
311#define HSO_PORT_APP2 0x5
312#define HSO_PORT_GPS_CONTROL 0x6
313#define HSO_PORT_MSD 0x7
314#define HSO_PORT_VOICE 0x8
315#define HSO_PORT_DIAG2 0x9
316#define HSO_PORT_DIAG 0x10
317#define HSO_PORT_MODEM 0x11
318#define HSO_PORT_NETWORK 0x12
319
320/* Additional device info */
321#define HSO_INFO_MASK 0xFF000000
322#define HSO_INFO_CRC_BUG 0x01000000
323
324/*****************************************************************************/
325/* Prototypes */
326/*****************************************************************************/
327/* Serial driver functions */
328static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
329 unsigned int set, unsigned int clear);
330static void ctrl_callback(struct urb *urb);
8ef5ba63 331static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial);
72dc1c09
GKH		 332static void hso_kick_transmit(struct hso_serial *serial);
333/* Helper functions */
334static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int,
335 struct usb_device *usb, gfp_t gfp);
68a351c5
JD		 336static void handle_usb_error(int status, const char *function,
337 struct hso_device *hso_dev);
72dc1c09
GKH		 338static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
339 int type, int dir);
340static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports);
341static void hso_free_interface(struct usb_interface *intf);
342static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags);
343static int hso_stop_serial_device(struct hso_device *hso_dev);
344static int hso_start_net_device(struct hso_device *hso_dev);
345static void hso_free_shared_int(struct hso_shared_int *shared_int);
346static int hso_stop_net_device(struct hso_device *hso_dev);
347static void hso_serial_ref_free(struct kref *ref);
8ef5ba63
DJB		 348static void hso_std_serial_read_bulk_callback(struct urb *urb);
349static int hso_mux_serial_read(struct hso_serial *serial);
72dc1c09
GKH		 350static void async_get_intf(struct work_struct *data);
351static void async_put_intf(struct work_struct *data);
352static int hso_put_activity(struct hso_device *hso_dev);
353static int hso_get_activity(struct hso_device *hso_dev);
542f5482 354static void tiocmget_intr_callback(struct urb *urb);
68a351c5 355static void reset_device(struct work_struct *data);
72dc1c09
GKH		 356/*****************************************************************************/
357/* Helping functions */
358/*****************************************************************************/
359
360/* #define DEBUG */
361
0235f641
GKH		 362static inline struct hso_net *dev2net(struct hso_device *hso_dev)
363{
364 return hso_dev->port_data.dev_net;
365}
366
367static inline struct hso_serial *dev2ser(struct hso_device *hso_dev)
368{
369 return hso_dev->port_data.dev_serial;
370}
72dc1c09
GKH		 371
372/* Debugging functions */
373#ifdef DEBUG
374static void dbg_dump(int line_count, const char *func_name, unsigned char *buf,
375 unsigned int len)
376{
0235f641 377 static char name[255];
72dc1c09 378
0235f641
GKH		 379 sprintf(name, "hso[%d:%s]", line_count, func_name);
380 print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len);
72dc1c09
GKH		 381}
382
383#define DUMP(buf_, len_) \
9ce673d5 384 dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_)
72dc1c09
GKH		 385
386#define DUMP1(buf_, len_) \
387 do { \
388 if (0x01 & debug) \
389 DUMP(buf_, len_); \
390 } while (0)
391#else
392#define DUMP(buf_, len_)
393#define DUMP1(buf_, len_)
394#endif
395
396/* module parameters */
397static int debug;
398static int tty_major;
399static int disable_net;
400
401/* driver info */
402static const char driver_name[] = "hso";
403static const char tty_filename[] = "ttyHS";
404static const char *version = __FILE__ ": " DRIVER_VERSION " " MOD_AUTHOR;
405/* the usb driver itself (registered in hso_init) */
406static struct usb_driver hso_driver;
407/* serial structures */
408static struct tty_driver *tty_drv;
409static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS];
410static struct hso_device *network_table[HSO_MAX_NET_DEVICES];
411static spinlock_t serial_table_lock;
72dc1c09
GKH		 412
413static const s32 default_port_spec[] = {
414 HSO_INTF_MUX | HSO_PORT_NETWORK,
415 HSO_INTF_BULK | HSO_PORT_DIAG,
416 HSO_INTF_BULK | HSO_PORT_MODEM,
417 0
418};
419
420static const s32 icon321_port_spec[] = {
421 HSO_INTF_MUX | HSO_PORT_NETWORK,
422 HSO_INTF_BULK | HSO_PORT_DIAG2,
423 HSO_INTF_BULK | HSO_PORT_MODEM,
424 HSO_INTF_BULK | HSO_PORT_DIAG,
425 0
426};
427
428#define default_port_device(vendor, product) \
429 USB_DEVICE(vendor, product), \
430 .driver_info = (kernel_ulong_t)default_port_spec
431
432#define icon321_port_device(vendor, product) \
433 USB_DEVICE(vendor, product), \
434 .driver_info = (kernel_ulong_t)icon321_port_spec
435
436/* list of devices we support */
437static const struct usb_device_id hso_ids[] = {
438 {default_port_device(0x0af0, 0x6711)},
439 {default_port_device(0x0af0, 0x6731)},
440 {default_port_device(0x0af0, 0x6751)},
441 {default_port_device(0x0af0, 0x6771)},
442 {default_port_device(0x0af0, 0x6791)},
443 {default_port_device(0x0af0, 0x6811)},
444 {default_port_device(0x0af0, 0x6911)},
445 {default_port_device(0x0af0, 0x6951)},
446 {default_port_device(0x0af0, 0x6971)},
447 {default_port_device(0x0af0, 0x7011)},
448 {default_port_device(0x0af0, 0x7031)},
449 {default_port_device(0x0af0, 0x7051)},
450 {default_port_device(0x0af0, 0x7071)},
451 {default_port_device(0x0af0, 0x7111)},
452 {default_port_device(0x0af0, 0x7211)},
453 {default_port_device(0x0af0, 0x7251)},
454 {default_port_device(0x0af0, 0x7271)},
455 {default_port_device(0x0af0, 0x7311)},
456 {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */
457 {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */
458 {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */
95eacee8 459 {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */
72dc1c09
GKH		 460 {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */
461 {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */
67dd8246 462 {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */
72dc1c09
GKH		 463 {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */
464 {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */
465 {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */
bab04c3a 466 {USB_DEVICE(0x0af0, 0x7701)},
ec157937 467 {USB_DEVICE(0x0af0, 0x7706)},
bab04c3a
DJB		 468 {USB_DEVICE(0x0af0, 0x7801)},
469 {USB_DEVICE(0x0af0, 0x7901)},
ec157937
JD		 470 {USB_DEVICE(0x0af0, 0x7A01)},
471 {USB_DEVICE(0x0af0, 0x7A05)},
9961d842
JD		 472 {USB_DEVICE(0x0af0, 0x8200)},
473 {USB_DEVICE(0x0af0, 0x8201)},
ec157937
JD		 474 {USB_DEVICE(0x0af0, 0x8300)},
475 {USB_DEVICE(0x0af0, 0x8302)},
476 {USB_DEVICE(0x0af0, 0x8304)},
477 {USB_DEVICE(0x0af0, 0x8400)},
9961d842 478 {USB_DEVICE(0x0af0, 0xd035)},
67dd8246 479 {USB_DEVICE(0x0af0, 0xd055)},
9961d842
JD		 480 {USB_DEVICE(0x0af0, 0xd155)},
481 {USB_DEVICE(0x0af0, 0xd255)},
482 {USB_DEVICE(0x0af0, 0xd057)},
483 {USB_DEVICE(0x0af0, 0xd157)},
484 {USB_DEVICE(0x0af0, 0xd257)},
485 {USB_DEVICE(0x0af0, 0xd357)},
ec157937
JD		 486 {USB_DEVICE(0x0af0, 0xd058)},
487 {USB_DEVICE(0x0af0, 0xc100)},
72dc1c09
GKH		 488 {}
489};
490MODULE_DEVICE_TABLE(usb, hso_ids);
491
492/* Sysfs attribute */
493static ssize_t hso_sysfs_show_porttype(struct device *dev,
494 struct device_attribute *attr,
495 char *buf)
496{
1aec5bdf 497 struct hso_device *hso_dev = dev_get_drvdata(dev);
72dc1c09
GKH		 498 char *port_name;
499
500 if (!hso_dev)
501 return 0;
502
503 switch (hso_dev->port_spec & HSO_PORT_MASK) {
504 case HSO_PORT_CONTROL:
505 port_name = "Control";
506 break;
507 case HSO_PORT_APP:
508 port_name = "Application";
509 break;
510 case HSO_PORT_APP2:
511 port_name = "Application2";
512 break;
513 case HSO_PORT_GPS:
514 port_name = "GPS";
515 break;
516 case HSO_PORT_GPS_CONTROL:
517 port_name = "GPS Control";
518 break;
519 case HSO_PORT_PCSC:
520 port_name = "PCSC";
521 break;
522 case HSO_PORT_DIAG:
523 port_name = "Diagnostic";
524 break;
525 case HSO_PORT_DIAG2:
526 port_name = "Diagnostic2";
527 break;
528 case HSO_PORT_MODEM:
529 port_name = "Modem";
530 break;
531 case HSO_PORT_NETWORK:
532 port_name = "Network";
533 break;
534 default:
535 port_name = "Unknown";
536 break;
537 }
538
539 return sprintf(buf, "%s\n", port_name);
540}
541static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL);
542
8ef5ba63
DJB		 543static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb)
544{
545 int idx;
546
547 for (idx = 0; idx < serial->num_rx_urbs; idx++)
548 if (serial->rx_urb[idx] == urb)
549 return idx;
550 dev_err(serial->parent->dev, "hso_urb_to_index failed\n");
551 return -1;
552}
553
72dc1c09
GKH		 554/* converts mux value to a port spec value */
555static u32 hso_mux_to_port(int mux)
556{
557 u32 result;
558
559 switch (mux) {
560 case 0x1:
561 result = HSO_PORT_CONTROL;
562 break;
563 case 0x2:
564 result = HSO_PORT_APP;
565 break;
566 case 0x4:
567 result = HSO_PORT_PCSC;
568 break;
569 case 0x8:
570 result = HSO_PORT_GPS;
571 break;
572 case 0x10:
573 result = HSO_PORT_APP2;
574 break;
575 default:
576 result = HSO_PORT_NO_PORT;
577 }
578 return result;
579}
580
581/* converts port spec value to a mux value */
582static u32 hso_port_to_mux(int port)
583{
584 u32 result;
585
586 switch (port & HSO_PORT_MASK) {
587 case HSO_PORT_CONTROL:
588 result = 0x0;
589 break;
590 case HSO_PORT_APP:
591 result = 0x1;
592 break;
593 case HSO_PORT_PCSC:
594 result = 0x2;
595 break;
596 case HSO_PORT_GPS:
597 result = 0x3;
598 break;
599 case HSO_PORT_APP2:
600 result = 0x4;
601 break;
602 default:
603 result = 0x0;
604 }
605 return result;
606}
607
608static struct hso_serial *get_serial_by_shared_int_and_type(
609 struct hso_shared_int *shared_int,
610 int mux)
611{
612 int i, port;
613
614 port = hso_mux_to_port(mux);
615
616 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
8e95a202
JP		 617 if (serial_table[i] &&
618 (dev2ser(serial_table[i])->shared_int == shared_int) &&
619 ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) {
72dc1c09
GKH		 620 return dev2ser(serial_table[i]);
621 }
622 }
623
624 return NULL;
625}
626
627static struct hso_serial *get_serial_by_index(unsigned index)
628{
0235f641 629 struct hso_serial *serial = NULL;
72dc1c09
GKH		 630 unsigned long flags;
631
72dc1c09 632 spin_lock_irqsave(&serial_table_lock, flags);
0235f641
GKH		 633 if (serial_table[index])
634 serial = dev2ser(serial_table[index]);
72dc1c09
GKH		 635 spin_unlock_irqrestore(&serial_table_lock, flags);
636
637 return serial;
638}
639
640static int get_free_serial_index(void)
641{
642 int index;
643 unsigned long flags;
644
645 spin_lock_irqsave(&serial_table_lock, flags);
646 for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) {
647 if (serial_table[index] == NULL) {
648 spin_unlock_irqrestore(&serial_table_lock, flags);
649 return index;
650 }
651 }
652 spin_unlock_irqrestore(&serial_table_lock, flags);
653
654 printk(KERN_ERR "%s: no free serial devices in table\n", __func__);
655 return -1;
656}
657
658static void set_serial_by_index(unsigned index, struct hso_serial *serial)
659{
660 unsigned long flags;
0235f641 661
72dc1c09
GKH		 662 spin_lock_irqsave(&serial_table_lock, flags);
663 if (serial)
664 serial_table[index] = serial->parent;
665 else
666 serial_table[index] = NULL;
667 spin_unlock_irqrestore(&serial_table_lock, flags);
668}
669
68a351c5
JD		 670static void handle_usb_error(int status, const char *function,
671 struct hso_device *hso_dev)
72dc1c09
GKH		 672{
673 char *explanation;
674
675 switch (status) {
676 case -ENODEV:
677 explanation = "no device";
678 break;
679 case -ENOENT:
680 explanation = "endpoint not enabled";
681 break;
682 case -EPIPE:
683 explanation = "endpoint stalled";
684 break;
685 case -ENOSPC:
686 explanation = "not enough bandwidth";
687 break;
688 case -ESHUTDOWN:
689 explanation = "device disabled";
690 break;
691 case -EHOSTUNREACH:
692 explanation = "device suspended";
693 break;
694 case -EINVAL:
695 case -EAGAIN:
696 case -EFBIG:
697 case -EMSGSIZE:
698 explanation = "internal error";
699 break;
68a351c5
JD		 700 case -EILSEQ:
701 case -EPROTO:
702 case -ETIME:
703 case -ETIMEDOUT:
704 explanation = "protocol error";
705 if (hso_dev)
706 schedule_work(&hso_dev->reset_device);
707 break;
72dc1c09
GKH		 708 default:
709 explanation = "unknown status";
710 break;
711 }
68a351c5
JD		 712
713 /* log a meaningful explanation of an USB status */
72dc1c09
GKH		 714 D1("%s: received USB status - %s (%d)", function, explanation, status);
715}
716
717/* Network interface functions */
718
719/* called when net interface is brought up by ifconfig */
720static int hso_net_open(struct net_device *net)
721{
722 struct hso_net *odev = netdev_priv(net);
723 unsigned long flags = 0;
724
725 if (!odev) {
726 dev_err(&net->dev, "No net device !\n");
727 return -ENODEV;
728 }
729
730 odev->skb_tx_buf = NULL;
731
732 /* setup environment */
733 spin_lock_irqsave(&odev->net_lock, flags);
734 odev->rx_parse_state = WAIT_IP;
735 odev->rx_buf_size = 0;
736 odev->rx_buf_missing = sizeof(struct iphdr);
737 spin_unlock_irqrestore(&odev->net_lock, flags);
738
72dc1c09
GKH		 739 /* We are up and running. */
740 set_bit(HSO_NET_RUNNING, &odev->flags);
889bd9b6 741 hso_start_net_device(odev->parent);
72dc1c09
GKH		 742
743 /* Tell the kernel we are ready to start receiving from it */
744 netif_start_queue(net);
745
746 return 0;
747}
748
749/* called when interface is brought down by ifconfig */
750static int hso_net_close(struct net_device *net)
751{
752 struct hso_net *odev = netdev_priv(net);
753
754 /* we don't need the queue anymore */
755 netif_stop_queue(net);
756 /* no longer running */
757 clear_bit(HSO_NET_RUNNING, &odev->flags);
758
759 hso_stop_net_device(odev->parent);
760
761 /* done */
762 return 0;
763}
764
765/* USB tells is xmit done, we should start the netqueue again */
766static void write_bulk_callback(struct urb *urb)
767{
768 struct hso_net *odev = urb->context;
769 int status = urb->status;
770
771 /* Sanity check */
772 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
773 dev_err(&urb->dev->dev, "%s: device not running\n", __func__);
774 return;
775 }
776
777 /* Do we still have a valid kernel network device? */
778 if (!netif_device_present(odev->net)) {
779 dev_err(&urb->dev->dev, "%s: net device not present\n",
780 __func__);
781 return;
782 }
783
784 /* log status, but don't act on it, we don't need to resubmit anything
785 * anyhow */
786 if (status)
68a351c5 787 handle_usb_error(status, __func__, odev->parent);
72dc1c09
GKH		 788
789 hso_put_activity(odev->parent);
790
791 /* Tell the network interface we are ready for another frame */
792 netif_wake_queue(odev->net);
793}
794
795/* called by kernel when we need to transmit a packet */
25a79c41
SH		 796static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb,
797 struct net_device *net)
72dc1c09
GKH		 798{
799 struct hso_net *odev = netdev_priv(net);
800 int result;
801
802 /* Tell the kernel, "No more frames 'til we are done with this one." */
803 netif_stop_queue(net);
804 if (hso_get_activity(odev->parent) == -EAGAIN) {
805 odev->skb_tx_buf = skb;
6ed10654 806 return NETDEV_TX_OK;
72dc1c09
GKH		 807 }
808
809 /* log if asked */
810 DUMP1(skb->data, skb->len);
811 /* Copy it from kernel memory to OUR memory */
812 memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len);
813 D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE);
814
815 /* Fill in the URB for shipping it out. */
816 usb_fill_bulk_urb(odev->mux_bulk_tx_urb,
817 odev->parent->usb,
818 usb_sndbulkpipe(odev->parent->usb,
819 odev->out_endp->
820 bEndpointAddress & 0x7F),
821 odev->mux_bulk_tx_buf, skb->len, write_bulk_callback,
822 odev);
823
824 /* Deal with the Zero Length packet problem, I hope */
825 odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET;
826
827 /* Send the URB on its merry way. */
828 result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC);
829 if (result) {
830 dev_warn(&odev->parent->interface->dev,
831 "failed mux_bulk_tx_urb %d", result);
832 net->stats.tx_errors++;
833 netif_start_queue(net);
834 } else {
835 net->stats.tx_packets++;
836 net->stats.tx_bytes += skb->len;
837 /* And tell the kernel when the last transmit started. */
838 net->trans_start = jiffies;
839 }
840 dev_kfree_skb(skb);
841 /* we're done */
5b2c4b97 842 return NETDEV_TX_OK;
72dc1c09
GKH		 843}
844
845static void hso_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
846{
847 struct hso_net *odev = netdev_priv(net);
848
849 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
850 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
851 usb_make_path(odev->parent->usb, info->bus_info, sizeof info->bus_info);
852}
853
0fc0b732 854static const struct ethtool_ops ops = {
72dc1c09
GKH		 855 .get_drvinfo = hso_get_drvinfo,
856 .get_link = ethtool_op_get_link
857};
858
859/* called when a packet did not ack after watchdogtimeout */
860static void hso_net_tx_timeout(struct net_device *net)
861{
862 struct hso_net *odev = netdev_priv(net);
863
864 if (!odev)
865 return;
866
867 /* Tell syslog we are hosed. */
868 dev_warn(&net->dev, "Tx timed out.\n");
869
870 /* Tear the waiting frame off the list */
8e95a202
JP		 871 if (odev->mux_bulk_tx_urb &&
872 (odev->mux_bulk_tx_urb->status == -EINPROGRESS))
72dc1c09
GKH		 873 usb_unlink_urb(odev->mux_bulk_tx_urb);
874
875 /* Update statistics */
876 net->stats.tx_errors++;
877}
878
879/* make a real packet from the received USB buffer */
880static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt,
881 unsigned int count, unsigned char is_eop)
882{
883 unsigned short temp_bytes;
884 unsigned short buffer_offset = 0;
885 unsigned short frame_len;
886 unsigned char *tmp_rx_buf;
887
888 /* log if needed */
889 D1("Rx %d bytes", count);
890 DUMP(ip_pkt, min(128, (int)count));
891
892 while (count) {
893 switch (odev->rx_parse_state) {
894 case WAIT_IP:
895 /* waiting for IP header. */
896 /* wanted bytes - size of ip header */
897 temp_bytes =
898 (count <
899 odev->rx_buf_missing) ? count : odev->
900 rx_buf_missing;
901
902 memcpy(((unsigned char *)(&odev->rx_ip_hdr)) +
903 odev->rx_buf_size, ip_pkt + buffer_offset,
904 temp_bytes);
905
906 odev->rx_buf_size += temp_bytes;
907 buffer_offset += temp_bytes;
908 odev->rx_buf_missing -= temp_bytes;
909 count -= temp_bytes;
910
911 if (!odev->rx_buf_missing) {
912 /* header is complete allocate an sk_buffer and
913 * continue to WAIT_DATA */
914 frame_len = ntohs(odev->rx_ip_hdr.tot_len);
915
916 if ((frame_len > DEFAULT_MRU) ||
917 (frame_len < sizeof(struct iphdr))) {
918 dev_err(&odev->net->dev,
919 "Invalid frame (%d) length\n",
920 frame_len);
921 odev->rx_parse_state = WAIT_SYNC;
922 continue;
923 }
924 /* Allocate an sk_buff */
d65a68a8
PZ		 925 odev->skb_rx_buf = netdev_alloc_skb(odev->net,
926 frame_len);
72dc1c09
GKH		 927 if (!odev->skb_rx_buf) {
928 /* We got no receive buffer. */
929 D1("could not allocate memory");
930 odev->rx_parse_state = WAIT_SYNC;
931 return;
932 }
72dc1c09
GKH		 933
934 /* Copy what we got so far. make room for iphdr
935 * after tail. */
936 tmp_rx_buf =
937 skb_put(odev->skb_rx_buf,
938 sizeof(struct iphdr));
939 memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr),
940 sizeof(struct iphdr));
941
942 /* ETH_HLEN */
943 odev->rx_buf_size = sizeof(struct iphdr);
944
945 /* Filip actually use .tot_len */
946 odev->rx_buf_missing =
947 frame_len - sizeof(struct iphdr);
948 odev->rx_parse_state = WAIT_DATA;
949 }
950 break;
951
952 case WAIT_DATA:
953 temp_bytes = (count < odev->rx_buf_missing)
954 ? count : odev->rx_buf_missing;
955
956 /* Copy the rest of the bytes that are left in the
957 * buffer into the waiting sk_buf. */
958 /* Make room for temp_bytes after tail. */
959 tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes);
960 memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes);
961
962 odev->rx_buf_missing -= temp_bytes;
963 count -= temp_bytes;
964 buffer_offset += temp_bytes;
965 odev->rx_buf_size += temp_bytes;
966 if (!odev->rx_buf_missing) {
967 /* Packet is complete. Inject into stack. */
968 /* We have IP packet here */
09640e63 969 odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP);
72dc1c09
GKH		 970 /* don't check it */
971 odev->skb_rx_buf->ip_summed =
972 CHECKSUM_UNNECESSARY;
973
974 skb_reset_mac_header(odev->skb_rx_buf);
975
976 /* Ship it off to the kernel */
977 netif_rx(odev->skb_rx_buf);
978 /* No longer our buffer. */
979 odev->skb_rx_buf = NULL;
980
981 /* update out statistics */
982 odev->net->stats.rx_packets++;
983
984 odev->net->stats.rx_bytes += odev->rx_buf_size;
985
986 odev->rx_buf_size = 0;
987 odev->rx_buf_missing = sizeof(struct iphdr);
988 odev->rx_parse_state = WAIT_IP;
989 }
990 break;
991
992 case WAIT_SYNC:
993 D1(" W_S");
994 count = 0;
995 break;
996 default:
997 D1(" ");
998 count--;
999 break;
1000 }
1001 }
1002
1003 /* Recovery mechanism for WAIT_SYNC state. */
1004 if (is_eop) {
1005 if (odev->rx_parse_state == WAIT_SYNC) {
1006 odev->rx_parse_state = WAIT_IP;
1007 odev->rx_buf_size = 0;
1008 odev->rx_buf_missing = sizeof(struct iphdr);
1009 }
1010 }
1011}
1012
1013/* Moving data from usb to kernel (in interrupt state) */
1014static void read_bulk_callback(struct urb *urb)
1015{
1016 struct hso_net *odev = urb->context;
1017 struct net_device *net;
1018 int result;
1019 int status = urb->status;
1020
1021 /* is al ok? (Filip: Who's Al ?) */
1022 if (status) {
68a351c5 1023 handle_usb_error(status, __func__, odev->parent);
72dc1c09
GKH		 1024 return;
1025 }
1026
1027 /* Sanity check */
1028 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
1029 D1("BULK IN callback but driver is not active!");
1030 return;
1031 }
1032 usb_mark_last_busy(urb->dev);
1033
1034 net = odev->net;
1035
1036 if (!netif_device_present(net)) {
1037 /* Somebody killed our network interface... */
1038 return;
1039 }
1040
1041 if (odev->parent->port_spec & HSO_INFO_CRC_BUG) {
1042 u32 rest;
1043 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
d9ced80d
JD		 1044 rest = urb->actual_length %
1045 le16_to_cpu(odev->in_endp->wMaxPacketSize);
8e95a202
JP		 1046 if (((rest == 5) || (rest == 6)) &&
1047 !memcmp(((u8 *) urb->transfer_buffer) +
1048 urb->actual_length - 4, crc_check, 4)) {
72dc1c09
GKH		 1049 urb->actual_length -= 4;
1050 }
1051 }
1052
1053 /* do we even have a packet? */
1054 if (urb->actual_length) {
1055 /* Handle the IP stream, add header and push it onto network
1056 * stack if the packet is complete. */
1057 spin_lock(&odev->net_lock);
1058 packetizeRx(odev, urb->transfer_buffer, urb->actual_length,
1059 (urb->transfer_buffer_length >
1060 urb->actual_length) ? 1 : 0);
1061 spin_unlock(&odev->net_lock);
1062 }
1063
1064 /* We are done with this URB, resubmit it. Prep the USB to wait for
1065 * another frame. Reuse same as received. */
1066 usb_fill_bulk_urb(urb,
1067 odev->parent->usb,
1068 usb_rcvbulkpipe(odev->parent->usb,
1069 odev->in_endp->
1070 bEndpointAddress & 0x7F),
1071 urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE,
1072 read_bulk_callback, odev);
1073
1074 /* Give this to the USB subsystem so it can tell us when more data
1075 * arrives. */
1076 result = usb_submit_urb(urb, GFP_ATOMIC);
1077 if (result)
1078 dev_warn(&odev->parent->interface->dev,
1079 "%s failed submit mux_bulk_rx_urb %d", __func__,
1080 result);
1081}
1082
1083/* Serial driver functions */
1084
ac9720c3 1085static void hso_init_termios(struct ktermios *termios)
72dc1c09 1086{
72dc1c09
GKH		 1087 /*
1088 * The default requirements for this device are:
1089 */
72dc1c09
GKH		 1090 termios->c_iflag &=
1091 ~(IGNBRK /* disable ignore break */
1092 | BRKINT /* disable break causes interrupt */
1093 | PARMRK /* disable mark parity errors */
1094 | ISTRIP /* disable clear high bit of input characters */
1095 | INLCR /* disable translate NL to CR */
1096 | IGNCR /* disable ignore CR */
1097 | ICRNL /* disable translate CR to NL */
1098 | IXON); /* disable enable XON/XOFF flow control */
1099
1100 /* disable postprocess output characters */
1101 termios->c_oflag &= ~OPOST;
1102
1103 termios->c_lflag &=
1104 ~(ECHO /* disable echo input characters */
1105 | ECHONL /* disable echo new line */
1106 | ICANON /* disable erase, kill, werase, and rprnt
1107 special characters */
1108 | ISIG /* disable interrupt, quit, and suspend special
1109 characters */
1110 | IEXTEN); /* disable non-POSIX special characters */
1111
1112 termios->c_cflag &=
1113 ~(CSIZE /* no size */
1114 | PARENB /* disable parity bit */
1115 | CBAUD /* clear current baud rate */
1116 | CBAUDEX); /* clear current buad rate */
1117
1118 termios->c_cflag |= CS8; /* character size 8 bits */
1119
1120 /* baud rate 115200 */
ac9720c3
AC		 1121 tty_termios_encode_baud_rate(termios, 115200, 115200);
1122}
1123
1124static void _hso_serial_set_termios(struct tty_struct *tty,
1125 struct ktermios *old)
1126{
1127 struct hso_serial *serial = get_serial_by_tty(tty);
1128 struct ktermios *termios;
1129
1130 if (!serial) {
1131 printk(KERN_ERR "%s: no tty structures", __func__);
1132 return;
1133 }
1134
1135 D4("port %d", serial->minor);
72dc1c09
GKH		 1136
1137 /*
ac9720c3 1138 * Fix up unsupported bits
72dc1c09 1139 */
ac9720c3
AC		 1140 termios = tty->termios;
1141 termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */
1142
1143 termios->c_cflag &=
1144 ~(CSIZE /* no size */
1145 | PARENB /* disable parity bit */
1146 | CBAUD /* clear current baud rate */
1147 | CBAUDEX); /* clear current buad rate */
1148
1149 termios->c_cflag |= CS8; /* character size 8 bits */
1150
1151 /* baud rate 115200 */
1152 tty_encode_baud_rate(tty, 115200, 115200);
72dc1c09
GKH		 1153}
1154
8ef5ba63
DJB		 1155static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb)
1156{
1157 int result;
1158#ifdef CONFIG_HSO_AUTOPM
1159 usb_mark_last_busy(urb->dev);
1160#endif
1161 /* We are done with this URB, resubmit it. Prep the USB to wait for
1162 * another frame */
1163 usb_fill_bulk_urb(urb, serial->parent->usb,
1164 usb_rcvbulkpipe(serial->parent->usb,
1165 serial->in_endp->
1166 bEndpointAddress & 0x7F),
1167 urb->transfer_buffer, serial->rx_data_length,
1168 hso_std_serial_read_bulk_callback, serial);
1169 /* Give this to the USB subsystem so it can tell us when more data
1170 * arrives. */
1171 result = usb_submit_urb(urb, GFP_ATOMIC);
1172 if (result) {
1173 dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n",
1174 __func__, result);
1175 }
1176}
1177
1178
1179
1180
1181static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial)
1182{
1183 int count;
1184 struct urb *curr_urb;
1185
1186 while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) {
1187 curr_urb = serial->rx_urb[serial->curr_rx_urb_idx];
1188 count = put_rxbuf_data(curr_urb, serial);
1189 if (count == -1)
1190 return;
1191 if (count == 0) {
1192 serial->curr_rx_urb_idx++;
1193 if (serial->curr_rx_urb_idx >= serial->num_rx_urbs)
1194 serial->curr_rx_urb_idx = 0;
1195 hso_resubmit_rx_bulk_urb(serial, curr_urb);
1196 }
1197 }
1198}
1199
1200static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
1201{
1202 int count = 0;
1203 struct urb *urb;
1204
1205 urb = serial->rx_urb[0];
1206 if (serial->open_count > 0) {
1207 count = put_rxbuf_data(urb, serial);
1208 if (count == -1)
1209 return;
1210 }
1211 /* Re issue a read as long as we receive data. */
1212
1213 if (count == 0 && ((urb->actual_length != 0) ||
1214 (serial->rx_state == RX_PENDING))) {
1215 serial->rx_state = RX_SENT;
1216 hso_mux_serial_read(serial);
1217 } else
1218 serial->rx_state = RX_IDLE;
1219}
1220
1221
1222/* read callback for Diag and CS port */
1223static void hso_std_serial_read_bulk_callback(struct urb *urb)
1224{
1225 struct hso_serial *serial = urb->context;
1226 int status = urb->status;
1227
1228 /* sanity check */
1229 if (!serial) {
1230 D1("serial == NULL");
1231 return;
1232 } else if (status) {
68a351c5 1233 handle_usb_error(status, __func__, serial->parent);
8ef5ba63
DJB		 1234 return;
1235 }
1236
1237 D4("\n--- Got serial_read_bulk callback %02x ---", status);
1238 D1("Actual length = %d\n", urb->actual_length);
1239 DUMP1(urb->transfer_buffer, urb->actual_length);
1240
1241 /* Anyone listening? */
1242 if (serial->open_count == 0)
1243 return;
1244
1245 if (status == 0) {
1246 if (serial->parent->port_spec & HSO_INFO_CRC_BUG) {
1247 u32 rest;
1248 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1249 rest =
1250 urb->actual_length %
d9ced80d 1251 le16_to_cpu(serial->in_endp->wMaxPacketSize);
8e95a202
JP		 1252 if (((rest == 5) || (rest == 6)) &&
1253 !memcmp(((u8 *) urb->transfer_buffer) +
1254 urb->actual_length - 4, crc_check, 4)) {
8ef5ba63
DJB		 1255 urb->actual_length -= 4;
1256 }
1257 }
1258 /* Valid data, handle RX data */
1259 spin_lock(&serial->serial_lock);
1260 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1;
1261 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1262 spin_unlock(&serial->serial_lock);
1263 } else if (status == -ENOENT || status == -ECONNRESET) {
1264 /* Unlinked - check for throttled port. */
1265 D2("Port %d, successfully unlinked urb", serial->minor);
1266 spin_lock(&serial->serial_lock);
1267 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
1268 hso_resubmit_rx_bulk_urb(serial, urb);
1269 spin_unlock(&serial->serial_lock);
1270 } else {
1271 D2("Port %d, status = %d for read urb", serial->minor, status);
1272 return;
1273 }
1274}
1275
1276/*
1277 * This needs to be a tasklet otherwise we will
1278 * end up recursively calling this function.
1279 */
0227abc9 1280static void hso_unthrottle_tasklet(struct hso_serial *serial)
8ef5ba63
DJB		 1281{
1282 unsigned long flags;
1283
1284 spin_lock_irqsave(&serial->serial_lock, flags);
1285 if ((serial->parent->port_spec & HSO_INTF_MUX))
1286 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
1287 else
1288 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1289 spin_unlock_irqrestore(&serial->serial_lock, flags);
1290}
1291
1292static void hso_unthrottle(struct tty_struct *tty)
1293{
1294 struct hso_serial *serial = get_serial_by_tty(tty);
1295
1296 tasklet_hi_schedule(&serial->unthrottle_tasklet);
1297}
1298
0227abc9 1299static void hso_unthrottle_workfunc(struct work_struct *work)
8ef5ba63
DJB		 1300{
1301 struct hso_serial *serial =
1302 container_of(work, struct hso_serial,
1303 retry_unthrottle_workqueue);
1304 hso_unthrottle_tasklet(serial);
1305}
1306
72dc1c09
GKH		 1307/* open the requested serial port */
1308static int hso_serial_open(struct tty_struct *tty, struct file *filp)
1309{
1310 struct hso_serial *serial = get_serial_by_index(tty->index);
ab153d84 1311 int result;
72dc1c09
GKH		 1312
1313 /* sanity check */
1314 if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) {
e136e303 1315 WARN_ON(1);
72dc1c09
GKH		 1316 tty->driver_data = NULL;
1317 D1("Failed to open port");
1318 return -ENODEV;
1319 }
1320
ab153d84 1321 mutex_lock(&serial->parent->mutex);
ab153d84
DM		 1322 result = usb_autopm_get_interface(serial->parent->interface);
1323 if (result < 0)
72dc1c09
GKH		 1324 goto err_out;
1325
1326 D1("Opening %d", serial->minor);
1327 kref_get(&serial->parent->ref);
1328
1329 /* setup */
e136e303 1330 spin_lock_irq(&serial->serial_lock);
72dc1c09 1331 tty->driver_data = serial;
fe41cbb1 1332 tty_kref_put(serial->tty);
e136e303
AC		 1333 serial->tty = tty_kref_get(tty);
1334 spin_unlock_irq(&serial->serial_lock);
72dc1c09 1335
2f9889a2
DM		 1336 /* check for port already opened, if not set the termios */
1337 serial->open_count++;
72dc1c09
GKH		 1338 if (serial->open_count == 1) {
1339 tty->low_latency = 1;
8ef5ba63 1340 serial->rx_state = RX_IDLE;
72dc1c09
GKH		 1341 /* Force default termio settings */
1342 _hso_serial_set_termios(tty, NULL);
8ef5ba63
DJB		 1343 tasklet_init(&serial->unthrottle_tasklet,
1344 (void (*)(unsigned long))hso_unthrottle_tasklet,
1345 (unsigned long)serial);
1346 INIT_WORK(&serial->retry_unthrottle_workqueue,
1347 hso_unthrottle_workfunc);
ab153d84
DM		 1348 result = hso_start_serial_device(serial->parent, GFP_KERNEL);
1349 if (result) {
72dc1c09
GKH		 1350 hso_stop_serial_device(serial->parent);
1351 serial->open_count--;
ab153d84 1352 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09
GKH		 1353 }
1354 } else {
1355 D1("Port was already open");
1356 }
1357
1358 usb_autopm_put_interface(serial->parent->interface);
1359
1360 /* done */
ab153d84 1361 if (result)
72dc1c09
GKH		 1362 hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0);
1363err_out:
ab153d84
DM		 1364 mutex_unlock(&serial->parent->mutex);
1365 return result;
72dc1c09
GKH		 1366}
1367
1368/* close the requested serial port */
1369static void hso_serial_close(struct tty_struct *tty, struct file *filp)
1370{
1371 struct hso_serial *serial = tty->driver_data;
1372 u8 usb_gone;
1373
1374 D1("Closing serial port");
1375
e136e303
AC		 1376 /* Open failed, no close cleanup required */
1377 if (serial == NULL)
1378 return;
1379
ab153d84 1380 mutex_lock(&serial->parent->mutex);
72dc1c09
GKH		 1381 usb_gone = serial->parent->usb_gone;
1382
1383 if (!usb_gone)
1384 usb_autopm_get_interface(serial->parent->interface);
1385
1386 /* reset the rts and dtr */
1387 /* do the actual close */
1388 serial->open_count--;
dcfcb256 1389
72dc1c09 1390 if (serial->open_count <= 0) {
72dc1c09 1391 serial->open_count = 0;
e136e303
AC		 1392 spin_lock_irq(&serial->serial_lock);
1393 if (serial->tty == tty) {
72dc1c09
GKH		 1394 serial->tty->driver_data = NULL;
1395 serial->tty = NULL;
e136e303 1396 tty_kref_put(tty);
72dc1c09 1397 }
e136e303 1398 spin_unlock_irq(&serial->serial_lock);
72dc1c09
GKH		 1399 if (!usb_gone)
1400 hso_stop_serial_device(serial->parent);
8ef5ba63
DJB		 1401 tasklet_kill(&serial->unthrottle_tasklet);
1402 cancel_work_sync(&serial->retry_unthrottle_workqueue);
72dc1c09 1403 }
8ef5ba63 1404
72dc1c09
GKH		 1405 if (!usb_gone)
1406 usb_autopm_put_interface(serial->parent->interface);
ab153d84
DM		 1407
1408 mutex_unlock(&serial->parent->mutex);
dcfcb256
AK		 1409
1410 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09
GKH		 1411}
1412
1413/* close the requested serial port */
1414static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf,
1415 int count)
1416{
1417 struct hso_serial *serial = get_serial_by_tty(tty);
1418 int space, tx_bytes;
1419 unsigned long flags;
1420
1421 /* sanity check */
1422 if (serial == NULL) {
1423 printk(KERN_ERR "%s: serial is NULL\n", __func__);
1424 return -ENODEV;
1425 }
1426
1427 spin_lock_irqsave(&serial->serial_lock, flags);
1428
1429 space = serial->tx_data_length - serial->tx_buffer_count;
1430 tx_bytes = (count < space) ? count : space;
1431
1432 if (!tx_bytes)
1433 goto out;
1434
1435 memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes);
1436 serial->tx_buffer_count += tx_bytes;
1437
1438out:
1439 spin_unlock_irqrestore(&serial->serial_lock, flags);
1440
1441 hso_kick_transmit(serial);
1442 /* done */
1443 return tx_bytes;
1444}
1445
1446/* how much room is there for writing */
1447static int hso_serial_write_room(struct tty_struct *tty)
1448{
1449 struct hso_serial *serial = get_serial_by_tty(tty);
1450 int room;
1451 unsigned long flags;
1452
1453 spin_lock_irqsave(&serial->serial_lock, flags);
1454 room = serial->tx_data_length - serial->tx_buffer_count;
1455 spin_unlock_irqrestore(&serial->serial_lock, flags);
1456
1457 /* return free room */
1458 return room;
1459}
1460
1461/* setup the term */
1462static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
1463{
1464 struct hso_serial *serial = get_serial_by_tty(tty);
1465 unsigned long flags;
1466
1467 if (old)
1468 D5("Termios called with: cflags new[%d] - old[%d]",
1469 tty->termios->c_cflag, old->c_cflag);
1470
1471 /* the actual setup */
1472 spin_lock_irqsave(&serial->serial_lock, flags);
1473 if (serial->open_count)
1474 _hso_serial_set_termios(tty, old);
1475 else
1476 tty->termios = old;
1477 spin_unlock_irqrestore(&serial->serial_lock, flags);
1478
1479 /* done */
1480 return;
1481}
1482
1483/* how many characters in the buffer */
1484static int hso_serial_chars_in_buffer(struct tty_struct *tty)
1485{
1486 struct hso_serial *serial = get_serial_by_tty(tty);
1487 int chars;
1488 unsigned long flags;
1489
1490 /* sanity check */
1491 if (serial == NULL)
1492 return 0;
1493
1494 spin_lock_irqsave(&serial->serial_lock, flags);
1495 chars = serial->tx_buffer_count;
1496 spin_unlock_irqrestore(&serial->serial_lock, flags);
1497
1498 return chars;
1499}
0227abc9
HE		 1500static int tiocmget_submit_urb(struct hso_serial *serial,
1501 struct hso_tiocmget *tiocmget,
1502 struct usb_device *usb)
542f5482
DJB		 1503{
1504 int result;
1505
1506 if (serial->parent->usb_gone)
1507 return -ENODEV;
1508 usb_fill_int_urb(tiocmget->urb, usb,
1509 usb_rcvintpipe(usb,
1510 tiocmget->endp->
1511 bEndpointAddress & 0x7F),
1512 &tiocmget->serial_state_notification,
1513 sizeof(struct hso_serial_state_notification),
1514 tiocmget_intr_callback, serial,
1515 tiocmget->endp->bInterval);
1516 result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC);
1517 if (result) {
1518 dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__,
1519 result);
1520 }
1521 return result;
1522
1523}
1524
1525static void tiocmget_intr_callback(struct urb *urb)
1526{
1527 struct hso_serial *serial = urb->context;
1528 struct hso_tiocmget *tiocmget;
1529 int status = urb->status;
1530 u16 UART_state_bitmap, prev_UART_state_bitmap;
1531 struct uart_icount *icount;
1532 struct hso_serial_state_notification *serial_state_notification;
1533 struct usb_device *usb;
1534
1535 /* Sanity checks */
1536 if (!serial)
1537 return;
1538 if (status) {
68a351c5 1539 handle_usb_error(status, __func__, serial->parent);
542f5482
DJB		 1540 return;
1541 }
1542 tiocmget = serial->tiocmget;
1543 if (!tiocmget)
1544 return;
1545 usb = serial->parent->usb;
1546 serial_state_notification = &tiocmget->serial_state_notification;
1547 if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE ||
1548 serial_state_notification->bNotification != B_NOTIFICATION ||
1549 le16_to_cpu(serial_state_notification->wValue) != W_VALUE ||
1550 le16_to_cpu(serial_state_notification->wIndex) != W_INDEX ||
1551 le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) {
1552 dev_warn(&usb->dev,
1553 "hso received invalid serial state notification\n");
1554 DUMP(serial_state_notification,
9ce673d5 1555 sizeof(struct hso_serial_state_notification));
542f5482
DJB		 1556 } else {
1557
1558 UART_state_bitmap = le16_to_cpu(serial_state_notification->
1559 UART_state_bitmap);
1560 prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap;
1561 icount = &tiocmget->icount;
1562 spin_lock(&serial->serial_lock);
1563 if ((UART_state_bitmap & B_OVERRUN) !=
1564 (prev_UART_state_bitmap & B_OVERRUN))
1565 icount->parity++;
1566 if ((UART_state_bitmap & B_PARITY) !=
1567 (prev_UART_state_bitmap & B_PARITY))
1568 icount->parity++;
1569 if ((UART_state_bitmap & B_FRAMING) !=
1570 (prev_UART_state_bitmap & B_FRAMING))
1571 icount->frame++;
1572 if ((UART_state_bitmap & B_RING_SIGNAL) &&
1573 !(prev_UART_state_bitmap & B_RING_SIGNAL))
1574 icount->rng++;
1575 if ((UART_state_bitmap & B_BREAK) !=
1576 (prev_UART_state_bitmap & B_BREAK))
1577 icount->brk++;
1578 if ((UART_state_bitmap & B_TX_CARRIER) !=
1579 (prev_UART_state_bitmap & B_TX_CARRIER))
1580 icount->dsr++;
1581 if ((UART_state_bitmap & B_RX_CARRIER) !=
1582 (prev_UART_state_bitmap & B_RX_CARRIER))
1583 icount->dcd++;
1584 tiocmget->prev_UART_state_bitmap = UART_state_bitmap;
1585 spin_unlock(&serial->serial_lock);
1586 tiocmget->intr_completed = 1;
1587 wake_up_interruptible(&tiocmget->waitq);
1588 }
1589 memset(serial_state_notification, 0,
1590 sizeof(struct hso_serial_state_notification));
1591 tiocmget_submit_urb(serial,
1592 tiocmget,
1593 serial->parent->usb);
1594}
1595
1596/*
1597 * next few functions largely stolen from drivers/serial/serial_core.c
1598 */
1599/* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1600 * - mask passed in arg for lines of interest
1601 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1602 * Caller should use TIOCGICOUNT to see which one it was
1603 */
1604static int
1605hso_wait_modem_status(struct hso_serial *serial, unsigned long arg)
1606{
1607 DECLARE_WAITQUEUE(wait, current);
1608 struct uart_icount cprev, cnow;
1609 struct hso_tiocmget *tiocmget;
1610 int ret;
1611
1612 tiocmget = serial->tiocmget;
1613 if (!tiocmget)
1614 return -ENOENT;
1615 /*
1616 * note the counters on entry
1617 */
1618 spin_lock_irq(&serial->serial_lock);
1619 memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount));
1620 spin_unlock_irq(&serial->serial_lock);
1621 add_wait_queue(&tiocmget->waitq, &wait);
1622 for (;;) {
1623 spin_lock_irq(&serial->serial_lock);
1624 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1625 spin_unlock_irq(&serial->serial_lock);
1626 set_current_state(TASK_INTERRUPTIBLE);
1627 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1628 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1629 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) {
1630 ret = 0;
1631 break;
1632 }
1633 schedule();
1634 /* see if a signal did it */
1635 if (signal_pending(current)) {
1636 ret = -ERESTARTSYS;
1637 break;
1638 }
1639 cprev = cnow;
1640 }
1641 current->state = TASK_RUNNING;
1642 remove_wait_queue(&tiocmget->waitq, &wait);
1643
1644 return ret;
1645}
1646
1647/*
1648 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
1649 * Return: write counters to the user passed counter struct
1650 * NB: both 1->0 and 0->1 transitions are counted except for
1651 * RI where only 0->1 is counted.
1652 */
1653static int hso_get_count(struct hso_serial *serial,
1654 struct serial_icounter_struct __user *icnt)
1655{
1656 struct serial_icounter_struct icount;
1657 struct uart_icount cnow;
1658 struct hso_tiocmget *tiocmget = serial->tiocmget;
1659
1660 if (!tiocmget)
1661 return -ENOENT;
1662 spin_lock_irq(&serial->serial_lock);
1663 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1664 spin_unlock_irq(&serial->serial_lock);
1665
1666 icount.cts = cnow.cts;
1667 icount.dsr = cnow.dsr;
1668 icount.rng = cnow.rng;
1669 icount.dcd = cnow.dcd;
1670 icount.rx = cnow.rx;
1671 icount.tx = cnow.tx;
1672 icount.frame = cnow.frame;
1673 icount.overrun = cnow.overrun;
1674 icount.parity = cnow.parity;
1675 icount.brk = cnow.brk;
1676 icount.buf_overrun = cnow.buf_overrun;
1677
1678 return copy_to_user(icnt, &icount, sizeof(icount)) ? -EFAULT : 0;
1679}
1680
72dc1c09
GKH		 1681
1682static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file)
1683{
542f5482 1684 int retval;
72dc1c09 1685 struct hso_serial *serial = get_serial_by_tty(tty);
542f5482
DJB		 1686 struct hso_tiocmget *tiocmget;
1687 u16 UART_state_bitmap;
72dc1c09
GKH		 1688
1689 /* sanity check */
1690 if (!serial) {
1691 D1("no tty structures");
1692 return -EINVAL;
1693 }
542f5482
DJB		 1694 spin_lock_irq(&serial->serial_lock);
1695 retval = ((serial->rts_state) ? TIOCM_RTS : 0) |
72dc1c09 1696 ((serial->dtr_state) ? TIOCM_DTR : 0);
542f5482
DJB		 1697 tiocmget = serial->tiocmget;
1698 if (tiocmget) {
1699
1700 UART_state_bitmap = le16_to_cpu(
1701 tiocmget->prev_UART_state_bitmap);
1702 if (UART_state_bitmap & B_RING_SIGNAL)
1703 retval |= TIOCM_RNG;
1704 if (UART_state_bitmap & B_RX_CARRIER)
1705 retval |= TIOCM_CD;
1706 if (UART_state_bitmap & B_TX_CARRIER)
1707 retval |= TIOCM_DSR;
1708 }
1709 spin_unlock_irq(&serial->serial_lock);
1710 return retval;
72dc1c09
GKH		 1711}
1712
1713static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
1714 unsigned int set, unsigned int clear)
1715{
1716 int val = 0;
1717 unsigned long flags;
1718 int if_num;
1719 struct hso_serial *serial = get_serial_by_tty(tty);
1720
1721 /* sanity check */
1722 if (!serial) {
1723 D1("no tty structures");
1724 return -EINVAL;
1725 }
0e0367e9
JD		 1726
1727 if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM)
1728 return -EINVAL;
1729
72dc1c09
GKH		 1730 if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber;
1731
1732 spin_lock_irqsave(&serial->serial_lock, flags);
1733 if (set & TIOCM_RTS)
1734 serial->rts_state = 1;
1735 if (set & TIOCM_DTR)
1736 serial->dtr_state = 1;
1737
1738 if (clear & TIOCM_RTS)
1739 serial->rts_state = 0;
1740 if (clear & TIOCM_DTR)
1741 serial->dtr_state = 0;
1742
1743 if (serial->dtr_state)
1744 val |= 0x01;
1745 if (serial->rts_state)
1746 val |= 0x02;
1747
1748 spin_unlock_irqrestore(&serial->serial_lock, flags);
1749
1750 return usb_control_msg(serial->parent->usb,
1751 usb_rcvctrlpipe(serial->parent->usb, 0), 0x22,
1752 0x21, val, if_num, NULL, 0,
1753 USB_CTRL_SET_TIMEOUT);
1754}
1755
542f5482
DJB		 1756static int hso_serial_ioctl(struct tty_struct *tty, struct file *file,
1757 unsigned int cmd, unsigned long arg)
1758{
1759 struct hso_serial *serial = get_serial_by_tty(tty);
1760 void __user *uarg = (void __user *)arg;
1761 int ret = 0;
1762 D4("IOCTL cmd: %d, arg: %ld", cmd, arg);
1763
1764 if (!serial)
1765 return -ENODEV;
1766 switch (cmd) {
1767 case TIOCMIWAIT:
1768 ret = hso_wait_modem_status(serial, arg);
1769 break;
1770
1771 case TIOCGICOUNT:
1772 ret = hso_get_count(serial, uarg);
1773 break;
1774 default:
1775 ret = -ENOIOCTLCMD;
1776 break;
1777 }
1778 return ret;
1779}
1780
1781
72dc1c09
GKH		 1782/* starts a transmit */
1783static void hso_kick_transmit(struct hso_serial *serial)
1784{
1785 u8 *temp;
1786 unsigned long flags;
1787 int res;
1788
1789 spin_lock_irqsave(&serial->serial_lock, flags);
1790 if (!serial->tx_buffer_count)
1791 goto out;
1792
1793 if (serial->tx_urb_used)
1794 goto out;
1795
1796 /* Wakeup USB interface if necessary */
1797 if (hso_get_activity(serial->parent) == -EAGAIN)
1798 goto out;
1799
1800 /* Switch pointers around to avoid memcpy */
1801 temp = serial->tx_buffer;
1802 serial->tx_buffer = serial->tx_data;
1803 serial->tx_data = temp;
1804 serial->tx_data_count = serial->tx_buffer_count;
1805 serial->tx_buffer_count = 0;
1806
1807 /* If temp is set, it means we switched buffers */
1808 if (temp && serial->write_data) {
1809 res = serial->write_data(serial);
1810 if (res >= 0)
1811 serial->tx_urb_used = 1;
1812 }
1813out:
1814 spin_unlock_irqrestore(&serial->serial_lock, flags);
1815}
1816
1817/* make a request (for reading and writing data to muxed serial port) */
1818static int mux_device_request(struct hso_serial *serial, u8 type, u16 port,
1819 struct urb *ctrl_urb,
1820 struct usb_ctrlrequest *ctrl_req,
1821 u8 *ctrl_urb_data, u32 size)
1822{
1823 int result;
1824 int pipe;
1825
1826 /* Sanity check */
1827 if (!serial || !ctrl_urb || !ctrl_req) {
1828 printk(KERN_ERR "%s: Wrong arguments\n", __func__);
1829 return -EINVAL;
1830 }
1831
1832 /* initialize */
1833 ctrl_req->wValue = 0;
b74f62c1
DJB		 1834 ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port));
1835 ctrl_req->wLength = cpu_to_le16(size);
72dc1c09
GKH		 1836
1837 if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) {
1838 /* Reading command */
1839 ctrl_req->bRequestType = USB_DIR_IN |
1840 USB_TYPE_OPTION_VENDOR |
1841 USB_RECIP_INTERFACE;
1842 ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
1843 pipe = usb_rcvctrlpipe(serial->parent->usb, 0);
1844 } else {
1845 /* Writing command */
1846 ctrl_req->bRequestType = USB_DIR_OUT |
1847 USB_TYPE_OPTION_VENDOR |
1848 USB_RECIP_INTERFACE;
1849 ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND;
1850 pipe = usb_sndctrlpipe(serial->parent->usb, 0);
1851 }
1852 /* syslog */
1853 D2("%s command (%02x) len: %d, port: %d",
1854 type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write",
1855 ctrl_req->bRequestType, ctrl_req->wLength, port);
1856
1857 /* Load ctrl urb */
1858 ctrl_urb->transfer_flags = 0;
1859 usb_fill_control_urb(ctrl_urb,
1860 serial->parent->usb,
1861 pipe,
1862 (u8 *) ctrl_req,
1863 ctrl_urb_data, size, ctrl_callback, serial);
1864 /* Send it on merry way */
1865 result = usb_submit_urb(ctrl_urb, GFP_ATOMIC);
1866 if (result) {
1867 dev_err(&ctrl_urb->dev->dev,
1868 "%s failed submit ctrl_urb %d type %d", __func__,
1869 result, type);
1870 return result;
1871 }
1872
1873 /* done */
1874 return size;
1875}
1876
1877/* called by intr_callback when read occurs */
1878static int hso_mux_serial_read(struct hso_serial *serial)
1879{
1880 if (!serial)
1881 return -EINVAL;
1882
1883 /* clean data */
1884 memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE);
1885 /* make the request */
1886
1887 if (serial->num_rx_urbs != 1) {
1888 dev_err(&serial->parent->interface->dev,
1889 "ERROR: mux'd reads with multiple buffers "
1890 "not possible\n");
1891 return 0;
1892 }
1893 return mux_device_request(serial,
1894 USB_CDC_GET_ENCAPSULATED_RESPONSE,
1895 serial->parent->port_spec & HSO_PORT_MASK,
1896 serial->rx_urb[0],
1897 &serial->ctrl_req_rx,
1898 serial->rx_data[0], serial->rx_data_length);
1899}
1900
1901/* used for muxed serial port callback (muxed serial read) */
1902static void intr_callback(struct urb *urb)
1903{
1904 struct hso_shared_int *shared_int = urb->context;
1905 struct hso_serial *serial;
1906 unsigned char *port_req;
1907 int status = urb->status;
1908 int i;
1909
1910 usb_mark_last_busy(urb->dev);
1911
1912 /* sanity check */
1913 if (!shared_int)
1914 return;
1915
1916 /* status check */
1917 if (status) {
68a351c5 1918 handle_usb_error(status, __func__, NULL);
72dc1c09
GKH		 1919 return;
1920 }
1921 D4("\n--- Got intr callback 0x%02X ---", status);
1922
1923 /* what request? */
1924 port_req = urb->transfer_buffer;
1925 D4(" port_req = 0x%.2X\n", *port_req);
1926 /* loop over all muxed ports to find the one sending this */
1927 for (i = 0; i < 8; i++) {
1928 /* max 8 channels on MUX */
1929 if (*port_req & (1 << i)) {
1930 serial = get_serial_by_shared_int_and_type(shared_int,
1931 (1 << i));
1932 if (serial != NULL) {
1933 D1("Pending read interrupt on port %d\n", i);
8ef5ba63 1934 spin_lock(&serial->serial_lock);
f4763e96
JD		 1935 if (serial->rx_state == RX_IDLE &&
1936 serial->open_count > 0) {
72dc1c09
GKH		 1937 /* Setup and send a ctrl req read on
1938 * port i */
f4763e96 1939 if (!serial->rx_urb_filled[0]) {
8ef5ba63
DJB		 1940 serial->rx_state = RX_SENT;
1941 hso_mux_serial_read(serial);
1942 } else
1943 serial->rx_state = RX_PENDING;
72dc1c09 1944 } else {
f4763e96
JD		 1945 D1("Already a read pending on "
1946 "port %d or port not open\n", i);
72dc1c09 1947 }
8ef5ba63 1948 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 1949 }
1950 }
1951 }
1952 /* Resubmit interrupt urb */
1953 hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC);
1954}
1955
1956/* called for writing to muxed serial port */
1957static int hso_mux_serial_write_data(struct hso_serial *serial)
1958{
1959 if (NULL == serial)
1960 return -EINVAL;
1961
1962 return mux_device_request(serial,
1963 USB_CDC_SEND_ENCAPSULATED_COMMAND,
1964 serial->parent->port_spec & HSO_PORT_MASK,
1965 serial->tx_urb,
1966 &serial->ctrl_req_tx,
1967 serial->tx_data, serial->tx_data_count);
1968}
1969
1970/* write callback for Diag and CS port */
1971static void hso_std_serial_write_bulk_callback(struct urb *urb)
1972{
1973 struct hso_serial *serial = urb->context;
1974 int status = urb->status;
e136e303 1975 struct tty_struct *tty;
72dc1c09
GKH		 1976
1977 /* sanity check */
1978 if (!serial) {
1979 D1("serial == NULL");
1980 return;
1981 }
1982
1983 spin_lock(&serial->serial_lock);
1984 serial->tx_urb_used = 0;
e136e303 1985 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 1986 spin_unlock(&serial->serial_lock);
1987 if (status) {
68a351c5 1988 handle_usb_error(status, __func__, serial->parent);
e136e303 1989 tty_kref_put(tty);
72dc1c09
GKH		 1990 return;
1991 }
1992 hso_put_activity(serial->parent);
e136e303
AC		 1993 if (tty) {
1994 tty_wakeup(tty);
1995 tty_kref_put(tty);
1996 }
72dc1c09
GKH		 1997 hso_kick_transmit(serial);
1998
1999 D1(" ");
2000 return;
2001}
2002
2003/* called for writing diag or CS serial port */
2004static int hso_std_serial_write_data(struct hso_serial *serial)
2005{
2006 int count = serial->tx_data_count;
2007 int result;
2008
2009 usb_fill_bulk_urb(serial->tx_urb,
2010 serial->parent->usb,
2011 usb_sndbulkpipe(serial->parent->usb,
2012 serial->out_endp->
2013 bEndpointAddress & 0x7F),
2014 serial->tx_data, serial->tx_data_count,
2015 hso_std_serial_write_bulk_callback, serial);
2016
2017 result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC);
2018 if (result) {
2019 dev_warn(&serial->parent->usb->dev,
2020 "Failed to submit urb - res %d\n", result);
2021 return result;
2022 }
2023
2024 return count;
2025}
2026
2027/* callback after read or write on muxed serial port */
2028static void ctrl_callback(struct urb *urb)
2029{
2030 struct hso_serial *serial = urb->context;
2031 struct usb_ctrlrequest *req;
2032 int status = urb->status;
e136e303 2033 struct tty_struct *tty;
72dc1c09
GKH		 2034
2035 /* sanity check */
2036 if (!serial)
2037 return;
2038
2039 spin_lock(&serial->serial_lock);
2040 serial->tx_urb_used = 0;
e136e303 2041 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 2042 spin_unlock(&serial->serial_lock);
2043 if (status) {
68a351c5 2044 handle_usb_error(status, __func__, serial->parent);
e136e303 2045 tty_kref_put(tty);
72dc1c09
GKH		 2046 return;
2047 }
2048
2049 /* what request? */
2050 req = (struct usb_ctrlrequest *)(urb->setup_packet);
2051 D4("\n--- Got muxed ctrl callback 0x%02X ---", status);
2052 D4("Actual length of urb = %d\n", urb->actual_length);
2053 DUMP1(urb->transfer_buffer, urb->actual_length);
2054
2055 if (req->bRequestType ==
2056 (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) {
2057 /* response to a read command */
8ef5ba63
DJB		 2058 serial->rx_urb_filled[0] = 1;
2059 spin_lock(&serial->serial_lock);
2060 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
2061 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 2062 } else {
2063 hso_put_activity(serial->parent);
e136e303
AC		 2064 if (tty)
2065 tty_wakeup(tty);
72dc1c09
GKH		 2066 /* response to a write command */
2067 hso_kick_transmit(serial);
2068 }
e136e303 2069 tty_kref_put(tty);
72dc1c09
GKH		 2070}
2071
2072/* handle RX data for serial port */
8ef5ba63 2073static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
72dc1c09 2074{
e136e303 2075 struct tty_struct *tty;
8ef5ba63
DJB		 2076 int write_length_remaining = 0;
2077 int curr_write_len;
e136e303 2078
72dc1c09
GKH		 2079 /* Sanity check */
2080 if (urb == NULL || serial == NULL) {
2081 D1("serial = NULL");
8ef5ba63 2082 return -2;
72dc1c09
GKH		 2083 }
2084
d45eb81c 2085 /* All callers to put_rxbuf_data hold serial_lock */
e136e303 2086 tty = tty_kref_get(serial->tty);
e136e303 2087
72dc1c09 2088 /* Push data to tty */
8ef5ba63
DJB		 2089 if (tty) {
2090 write_length_remaining = urb->actual_length -
2091 serial->curr_rx_urb_offset;
72dc1c09 2092 D1("data to push to tty");
8ef5ba63 2093 while (write_length_remaining) {
5839b414
DJB		 2094 if (test_bit(TTY_THROTTLED, &tty->flags)) {
2095 tty_kref_put(tty);
8ef5ba63 2096 return -1;
5839b414 2097 }
8ef5ba63
DJB		 2098 curr_write_len = tty_insert_flip_string
2099 (tty, urb->transfer_buffer +
2100 serial->curr_rx_urb_offset,
2101 write_length_remaining);
2102 serial->curr_rx_urb_offset += curr_write_len;
2103 write_length_remaining -= curr_write_len;
2104 tty_flip_buffer_push(tty);
72dc1c09 2105 }
72dc1c09 2106 }
8ef5ba63
DJB		 2107 if (write_length_remaining == 0) {
2108 serial->curr_rx_urb_offset = 0;
2109 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
72dc1c09 2110 }
e136e303 2111 tty_kref_put(tty);
8ef5ba63 2112 return write_length_remaining;
72dc1c09
GKH		 2113}
2114
8ef5ba63 2115
72dc1c09
GKH		 2116/* Base driver functions */
2117
2118static void hso_log_port(struct hso_device *hso_dev)
2119{
2120 char *port_type;
2121 char port_dev[20];
2122
2123 switch (hso_dev->port_spec & HSO_PORT_MASK) {
2124 case HSO_PORT_CONTROL:
2125 port_type = "Control";
2126 break;
2127 case HSO_PORT_APP:
2128 port_type = "Application";
2129 break;
2130 case HSO_PORT_GPS:
2131 port_type = "GPS";
2132 break;
2133 case HSO_PORT_GPS_CONTROL:
2134 port_type = "GPS control";
2135 break;
2136 case HSO_PORT_APP2:
2137 port_type = "Application2";
2138 break;
2139 case HSO_PORT_PCSC:
2140 port_type = "PCSC";
2141 break;
2142 case HSO_PORT_DIAG:
2143 port_type = "Diagnostic";
2144 break;
2145 case HSO_PORT_DIAG2:
2146 port_type = "Diagnostic2";
2147 break;
2148 case HSO_PORT_MODEM:
2149 port_type = "Modem";
2150 break;
2151 case HSO_PORT_NETWORK:
2152 port_type = "Network";
2153 break;
2154 default:
2155 port_type = "Unknown";
2156 break;
2157 }
2158 if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2159 sprintf(port_dev, "%s", dev2net(hso_dev)->net->name);
2160 } else
2161 sprintf(port_dev, "/dev/%s%d", tty_filename,
2162 dev2ser(hso_dev)->minor);
2163
2164 dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n",
2165 port_type, port_dev);
2166}
2167
2168static int hso_start_net_device(struct hso_device *hso_dev)
2169{
2170 int i, result = 0;
2171 struct hso_net *hso_net = dev2net(hso_dev);
2172
2173 if (!hso_net)
2174 return -ENODEV;
2175
2176 /* send URBs for all read buffers */
2177 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2178
2179 /* Prep a receive URB */
2180 usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i],
2181 hso_dev->usb,
2182 usb_rcvbulkpipe(hso_dev->usb,
2183 hso_net->in_endp->
2184 bEndpointAddress & 0x7F),
2185 hso_net->mux_bulk_rx_buf_pool[i],
2186 MUX_BULK_RX_BUF_SIZE, read_bulk_callback,
2187 hso_net);
2188
2189 /* Put it out there so the device can send us stuff */
2190 result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i],
2191 GFP_NOIO);
2192 if (result)
2193 dev_warn(&hso_dev->usb->dev,
2194 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__,
2195 i, result);
2196 }
2197
2198 return result;
2199}
2200
2201static int hso_stop_net_device(struct hso_device *hso_dev)
2202{
2203 int i;
2204 struct hso_net *hso_net = dev2net(hso_dev);
2205
2206 if (!hso_net)
2207 return -ENODEV;
2208
2209 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2210 if (hso_net->mux_bulk_rx_urb_pool[i])
2211 usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2212
2213 }
2214 if (hso_net->mux_bulk_tx_urb)
2215 usb_kill_urb(hso_net->mux_bulk_tx_urb);
2216
2217 return 0;
2218}
2219
2220static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags)
2221{
2222 int i, result = 0;
2223 struct hso_serial *serial = dev2ser(hso_dev);
2224
2225 if (!serial)
2226 return -ENODEV;
2227
2228 /* If it is not the MUX port fill in and submit a bulk urb (already
2229 * allocated in hso_serial_start) */
2230 if (!(serial->parent->port_spec & HSO_INTF_MUX)) {
2231 for (i = 0; i < serial->num_rx_urbs; i++) {
2232 usb_fill_bulk_urb(serial->rx_urb[i],
2233 serial->parent->usb,
2234 usb_rcvbulkpipe(serial->parent->usb,
2235 serial->in_endp->
2236 bEndpointAddress &
2237 0x7F),
2238 serial->rx_data[i],
2239 serial->rx_data_length,
2240 hso_std_serial_read_bulk_callback,
2241 serial);
2242 result = usb_submit_urb(serial->rx_urb[i], flags);
2243 if (result) {
2244 dev_warn(&serial->parent->usb->dev,
2245 "Failed to submit urb - res %d\n",
2246 result);
2247 break;
2248 }
2249 }
2250 } else {
2251 mutex_lock(&serial->shared_int->shared_int_lock);
2252 if (!serial->shared_int->use_count) {
2253 result =
2254 hso_mux_submit_intr_urb(serial->shared_int,
2255 hso_dev->usb, flags);
2256 }
2257 serial->shared_int->use_count++;
2258 mutex_unlock(&serial->shared_int->shared_int_lock);
2259 }
542f5482
DJB		 2260 if (serial->tiocmget)
2261 tiocmget_submit_urb(serial,
2262 serial->tiocmget,
2263 serial->parent->usb);
72dc1c09
GKH		 2264 return result;
2265}
2266
2267static int hso_stop_serial_device(struct hso_device *hso_dev)
2268{
2269 int i;
2270 struct hso_serial *serial = dev2ser(hso_dev);
542f5482 2271 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2272
2273 if (!serial)
2274 return -ENODEV;
2275
2276 for (i = 0; i < serial->num_rx_urbs; i++) {
8ef5ba63 2277 if (serial->rx_urb[i]) {
72dc1c09 2278 usb_kill_urb(serial->rx_urb[i]);
8ef5ba63
DJB		 2279 serial->rx_urb_filled[i] = 0;
2280 }
72dc1c09 2281 }
8ef5ba63
DJB		 2282 serial->curr_rx_urb_idx = 0;
2283 serial->curr_rx_urb_offset = 0;
72dc1c09
GKH		 2284
2285 if (serial->tx_urb)
2286 usb_kill_urb(serial->tx_urb);
2287
2288 if (serial->shared_int) {
2289 mutex_lock(&serial->shared_int->shared_int_lock);
2290 if (serial->shared_int->use_count &&
2291 (--serial->shared_int->use_count == 0)) {
2292 struct urb *urb;
2293
2294 urb = serial->shared_int->shared_intr_urb;
2295 if (urb)
2296 usb_kill_urb(urb);
2297 }
2298 mutex_unlock(&serial->shared_int->shared_int_lock);
2299 }
542f5482
DJB		 2300 tiocmget = serial->tiocmget;
2301 if (tiocmget) {
2302 wake_up_interruptible(&tiocmget->waitq);
2303 usb_kill_urb(tiocmget->urb);
2304 }
72dc1c09
GKH		 2305
2306 return 0;
2307}
2308
2309static void hso_serial_common_free(struct hso_serial *serial)
2310{
2311 int i;
2312
2313 if (serial->parent->dev)
2314 device_remove_file(serial->parent->dev, &dev_attr_hsotype);
2315
2316 tty_unregister_device(tty_drv, serial->minor);
2317
2318 for (i = 0; i < serial->num_rx_urbs; i++) {
2319 /* unlink and free RX URB */
2320 usb_free_urb(serial->rx_urb[i]);
2321 /* free the RX buffer */
2322 kfree(serial->rx_data[i]);
2323 }
2324
2325 /* unlink and free TX URB */
2326 usb_free_urb(serial->tx_urb);
2327 kfree(serial->tx_data);
2328}
2329
2330static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
2331 int rx_size, int tx_size)
2332{
2333 struct device *dev;
2334 int minor;
2335 int i;
2336
2337 minor = get_free_serial_index();
2338 if (minor < 0)
2339 goto exit;
2340
2341 /* register our minor number */
2342 serial->parent->dev = tty_register_device(tty_drv, minor,
2343 &serial->parent->interface->dev);
2344 dev = serial->parent->dev;
1aec5bdf 2345 dev_set_drvdata(dev, serial->parent);
72dc1c09
GKH		 2346 i = device_create_file(dev, &dev_attr_hsotype);
2347
2348 /* fill in specific data for later use */
2349 serial->minor = minor;
2350 serial->magic = HSO_SERIAL_MAGIC;
2351 spin_lock_init(&serial->serial_lock);
2352 serial->num_rx_urbs = num_urbs;
2353
2354 /* RX, allocate urb and initialize */
2355
2356 /* prepare our RX buffer */
2357 serial->rx_data_length = rx_size;
2358 for (i = 0; i < serial->num_rx_urbs; i++) {
2359 serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
2360 if (!serial->rx_urb[i]) {
2361 dev_err(dev, "Could not allocate urb?\n");
2362 goto exit;
2363 }
2364 serial->rx_urb[i]->transfer_buffer = NULL;
2365 serial->rx_urb[i]->transfer_buffer_length = 0;
2366 serial->rx_data[i] = kzalloc(serial->rx_data_length,
2367 GFP_KERNEL);
2368 if (!serial->rx_data[i]) {
2369 dev_err(dev, "%s - Out of memory\n", __func__);
2370 goto exit;
2371 }
2372 }
2373
2374 /* TX, allocate urb and initialize */
2375 serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2376 if (!serial->tx_urb) {
2377 dev_err(dev, "Could not allocate urb?\n");
2378 goto exit;
2379 }
2380 serial->tx_urb->transfer_buffer = NULL;
2381 serial->tx_urb->transfer_buffer_length = 0;
2382 /* prepare our TX buffer */
2383 serial->tx_data_count = 0;
2384 serial->tx_buffer_count = 0;
2385 serial->tx_data_length = tx_size;
2386 serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL);
2387 if (!serial->tx_data) {
2388 dev_err(dev, "%s - Out of memory", __func__);
2389 goto exit;
2390 }
2391 serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL);
2392 if (!serial->tx_buffer) {
2393 dev_err(dev, "%s - Out of memory", __func__);
2394 goto exit;
2395 }
2396
2397 return 0;
2398exit:
2399 hso_serial_common_free(serial);
2400 return -1;
2401}
2402
72dc1c09
GKH		 2403/* Creates a general hso device */
2404static struct hso_device *hso_create_device(struct usb_interface *intf,
2405 int port_spec)
2406{
2407 struct hso_device *hso_dev;
2408
2409 hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC);
2410 if (!hso_dev)
2411 return NULL;
2412
2413 hso_dev->port_spec = port_spec;
2414 hso_dev->usb = interface_to_usbdev(intf);
2415 hso_dev->interface = intf;
2416 kref_init(&hso_dev->ref);
ab153d84
DM		 2417 mutex_init(&hso_dev->mutex);
2418
72dc1c09
GKH		 2419 INIT_WORK(&hso_dev->async_get_intf, async_get_intf);
2420 INIT_WORK(&hso_dev->async_put_intf, async_put_intf);
68a351c5 2421 INIT_WORK(&hso_dev->reset_device, reset_device);
72dc1c09
GKH		 2422
2423 return hso_dev;
2424}
2425
2426/* Removes a network device in the network device table */
2427static int remove_net_device(struct hso_device *hso_dev)
2428{
2429 int i;
2430
2431 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2432 if (network_table[i] == hso_dev) {
2433 network_table[i] = NULL;
2434 break;
2435 }
2436 }
2437 if (i == HSO_MAX_NET_DEVICES)
2438 return -1;
2439 return 0;
2440}
2441
2442/* Frees our network device */
2443static void hso_free_net_device(struct hso_device *hso_dev)
2444{
2445 int i;
2446 struct hso_net *hso_net = dev2net(hso_dev);
2447
2448 if (!hso_net)
2449 return;
2450
3b7d2b31
JD		 2451 remove_net_device(hso_net->parent);
2452
2453 if (hso_net->net) {
2454 unregister_netdev(hso_net->net);
2455 free_netdev(hso_net->net);
2456 }
2457
72dc1c09
GKH		 2458 /* start freeing */
2459 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2460 usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2461 kfree(hso_net->mux_bulk_rx_buf_pool[i]);
3b7d2b31 2462 hso_net->mux_bulk_rx_buf_pool[i] = NULL;
72dc1c09
GKH		 2463 }
2464 usb_free_urb(hso_net->mux_bulk_tx_urb);
2465 kfree(hso_net->mux_bulk_tx_buf);
3b7d2b31 2466 hso_net->mux_bulk_tx_buf = NULL;
ab153d84 2467
e44578ea 2468 kfree(hso_dev);
72dc1c09
GKH		 2469}
2470
c266cb4e
SH		 2471static const struct net_device_ops hso_netdev_ops = {
2472 .ndo_open = hso_net_open,
2473 .ndo_stop = hso_net_close,
2474 .ndo_start_xmit = hso_net_start_xmit,
2475 .ndo_tx_timeout = hso_net_tx_timeout,
2476};
2477
72dc1c09
GKH		 2478/* initialize the network interface */
2479static void hso_net_init(struct net_device *net)
2480{
2481 struct hso_net *hso_net = netdev_priv(net);
2482
2483 D1("sizeof hso_net is %d", (int)sizeof(*hso_net));
2484
2485 /* fill in the other fields */
c266cb4e 2486 net->netdev_ops = &hso_netdev_ops;
72dc1c09
GKH		 2487 net->watchdog_timeo = HSO_NET_TX_TIMEOUT;
2488 net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
2489 net->type = ARPHRD_NONE;
2490 net->mtu = DEFAULT_MTU - 14;
2491 net->tx_queue_len = 10;
2492 SET_ETHTOOL_OPS(net, &ops);
2493
2494 /* and initialize the semaphore */
2495 spin_lock_init(&hso_net->net_lock);
2496}
2497
2498/* Adds a network device in the network device table */
2499static int add_net_device(struct hso_device *hso_dev)
2500{
2501 int i;
2502
2503 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2504 if (network_table[i] == NULL) {
2505 network_table[i] = hso_dev;
2506 break;
2507 }
2508 }
2509 if (i == HSO_MAX_NET_DEVICES)
2510 return -1;
2511 return 0;
2512}
2513
19d337df 2514static int hso_rfkill_set_block(void *data, bool blocked)
72dc1c09
GKH		 2515{
2516 struct hso_device *hso_dev = data;
19d337df 2517 int enabled = !blocked;
72dc1c09
GKH		 2518 int rv;
2519
ab153d84 2520 mutex_lock(&hso_dev->mutex);
72dc1c09
GKH		 2521 if (hso_dev->usb_gone)
2522 rv = 0;
2523 else
2524 rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0),
2525 enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
2526 USB_CTRL_SET_TIMEOUT);
ab153d84 2527 mutex_unlock(&hso_dev->mutex);
72dc1c09
GKH		 2528 return rv;
2529}
2530
19d337df
JB		 2531static const struct rfkill_ops hso_rfkill_ops = {
2532 .set_block = hso_rfkill_set_block,
2533};
2534
72dc1c09
GKH		 2535/* Creates and sets up everything for rfkill */
2536static void hso_create_rfkill(struct hso_device *hso_dev,
2537 struct usb_interface *interface)
2538{
2539 struct hso_net *hso_net = dev2net(hso_dev);
939a9516 2540 struct device *dev = &hso_net->net->dev;
72dc1c09
GKH		 2541 char *rfkn;
2542
72dc1c09 2543 rfkn = kzalloc(20, GFP_KERNEL);
19d337df 2544 if (!rfkn)
939a9516 2545 dev_err(dev, "%s - Out of memory\n", __func__);
19d337df 2546
72dc1c09
GKH		 2547 snprintf(rfkn, 20, "hso-%d",
2548 interface->altsetting->desc.bInterfaceNumber);
19d337df
JB		 2549
2550 hso_net->rfkill = rfkill_alloc(rfkn,
2551 &interface_to_usbdev(interface)->dev,
2552 RFKILL_TYPE_WWAN,
2553 &hso_rfkill_ops, hso_dev);
2554 if (!hso_net->rfkill) {
2555 dev_err(dev, "%s - Out of memory\n", __func__);
2556 kfree(rfkn);
2557 return;
2558 }
72dc1c09 2559 if (rfkill_register(hso_net->rfkill) < 0) {
19d337df 2560 rfkill_destroy(hso_net->rfkill);
72dc1c09 2561 kfree(rfkn);
939a9516
JM		 2562 hso_net->rfkill = NULL;
2563 dev_err(dev, "%s - Failed to register rfkill\n", __func__);
72dc1c09
GKH		 2564 return;
2565 }
2566}
2567
384912ed
MH		 2568static struct device_type hso_type = {
2569 .name = "wwan",
2570};
2571
72dc1c09 2572/* Creates our network device */
0de8ca59
JD		 2573static struct hso_device *hso_create_net_device(struct usb_interface *interface,
2574 int port_spec)
72dc1c09
GKH		 2575{
2576 int result, i;
2577 struct net_device *net;
2578 struct hso_net *hso_net;
2579 struct hso_device *hso_dev;
2580
0de8ca59 2581 hso_dev = hso_create_device(interface, port_spec);
72dc1c09
GKH		 2582 if (!hso_dev)
2583 return NULL;
2584
2585 /* allocate our network device, then we can put in our private data */
2586 /* call hso_net_init to do the basic initialization */
2587 net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init);
2588 if (!net) {
2589 dev_err(&interface->dev, "Unable to create ethernet device\n");
2590 goto exit;
2591 }
2592
2593 hso_net = netdev_priv(net);
2594
2595 hso_dev->port_data.dev_net = hso_net;
2596 hso_net->net = net;
2597 hso_net->parent = hso_dev;
2598
2599 hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2600 USB_DIR_IN);
2601 if (!hso_net->in_endp) {
2602 dev_err(&interface->dev, "Can't find BULK IN endpoint\n");
2603 goto exit;
2604 }
2605 hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2606 USB_DIR_OUT);
2607 if (!hso_net->out_endp) {
2608 dev_err(&interface->dev, "Can't find BULK OUT endpoint\n");
2609 goto exit;
2610 }
2611 SET_NETDEV_DEV(net, &interface->dev);
384912ed 2612 SET_NETDEV_DEVTYPE(net, &hso_type);
72dc1c09
GKH		 2613
2614 /* registering our net device */
2615 result = register_netdev(net);
2616 if (result) {
2617 dev_err(&interface->dev, "Failed to register device\n");
2618 goto exit;
2619 }
2620
2621 /* start allocating */
2622 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2623 hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL);
2624 if (!hso_net->mux_bulk_rx_urb_pool[i]) {
2625 dev_err(&interface->dev, "Could not allocate rx urb\n");
2626 goto exit;
2627 }
2628 hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE,
2629 GFP_KERNEL);
2630 if (!hso_net->mux_bulk_rx_buf_pool[i]) {
2631 dev_err(&interface->dev, "Could not allocate rx buf\n");
2632 goto exit;
2633 }
2634 }
2635 hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2636 if (!hso_net->mux_bulk_tx_urb) {
2637 dev_err(&interface->dev, "Could not allocate tx urb\n");
2638 goto exit;
2639 }
2640 hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL);
2641 if (!hso_net->mux_bulk_tx_buf) {
2642 dev_err(&interface->dev, "Could not allocate tx buf\n");
2643 goto exit;
2644 }
2645
2646 add_net_device(hso_dev);
2647
2648 hso_log_port(hso_dev);
2649
2650 hso_create_rfkill(hso_dev, interface);
2651
2652 return hso_dev;
2653exit:
2654 hso_free_net_device(hso_dev);
2655 return NULL;
2656}
2657
542f5482
DJB		 2658static void hso_free_tiomget(struct hso_serial *serial)
2659{
2660 struct hso_tiocmget *tiocmget = serial->tiocmget;
2661 if (tiocmget) {
542f5482
DJB		 2662 if (tiocmget->urb) {
2663 usb_free_urb(tiocmget->urb);
2664 tiocmget->urb = NULL;
2665 }
2666 serial->tiocmget = NULL;
3b7d2b31 2667 kfree(tiocmget);
542f5482
DJB		 2668
2669 }
2670}
2671
72dc1c09
GKH		 2672/* Frees an AT channel ( goes for both mux and non-mux ) */
2673static void hso_free_serial_device(struct hso_device *hso_dev)
2674{
2675 struct hso_serial *serial = dev2ser(hso_dev);
2676
2677 if (!serial)
2678 return;
2679 set_serial_by_index(serial->minor, NULL);
2680
2681 hso_serial_common_free(serial);
2682
2683 if (serial->shared_int) {
2684 mutex_lock(&serial->shared_int->shared_int_lock);
2685 if (--serial->shared_int->ref_count == 0)
2686 hso_free_shared_int(serial->shared_int);
2687 else
2688 mutex_unlock(&serial->shared_int->shared_int_lock);
2689 }
542f5482 2690 hso_free_tiomget(serial);
72dc1c09 2691 kfree(serial);
e44578ea 2692 kfree(hso_dev);
72dc1c09
GKH		 2693}
2694
2695/* Creates a bulk AT channel */
2696static struct hso_device *hso_create_bulk_serial_device(
2697 struct usb_interface *interface, int port)
2698{
2699 struct hso_device *hso_dev;
2700 struct hso_serial *serial;
2701 int num_urbs;
542f5482 2702 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2703
2704 hso_dev = hso_create_device(interface, port);
2705 if (!hso_dev)
2706 return NULL;
2707
2708 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2709 if (!serial)
2710 goto exit;
2711
2712 serial->parent = hso_dev;
2713 hso_dev->port_data.dev_serial = serial;
2714
58eb17f1 2715 if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
72dc1c09 2716 num_urbs = 2;
542f5482
DJB		 2717 serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
2718 GFP_KERNEL);
2719 /* it isn't going to break our heart if serial->tiocmget
2720 * allocation fails don't bother checking this.
2721 */
2722 if (serial->tiocmget) {
2723 tiocmget = serial->tiocmget;
2724 tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
2725 if (tiocmget->urb) {
2726 mutex_init(&tiocmget->mutex);
2727 init_waitqueue_head(&tiocmget->waitq);
2728 tiocmget->endp = hso_get_ep(
2729 interface,
2730 USB_ENDPOINT_XFER_INT,
2731 USB_DIR_IN);
2732 } else
2733 hso_free_tiomget(serial);
2734 }
2735 }
72dc1c09
GKH		 2736 else
2737 num_urbs = 1;
2738
2739 if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE,
2740 BULK_URB_TX_SIZE))
2741 goto exit;
2742
2743 serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2744 USB_DIR_IN);
2745 if (!serial->in_endp) {
2746 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2747 goto exit2;
72dc1c09
GKH		 2748 }
2749
2750 if (!
2751 (serial->out_endp =
2752 hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) {
2753 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2754 goto exit2;
72dc1c09
GKH		 2755 }
2756
2757 serial->write_data = hso_std_serial_write_data;
2758
2759 /* and record this serial */
2760 set_serial_by_index(serial->minor, serial);
2761
2762 /* setup the proc dirs and files if needed */
2763 hso_log_port(hso_dev);
2764
2765 /* done, return it */
2766 return hso_dev;
e57b641d
AB		 2767
2768exit2:
2769 hso_serial_common_free(serial);
72dc1c09 2770exit:
542f5482 2771 hso_free_tiomget(serial);
72dc1c09 2772 kfree(serial);
e44578ea 2773 kfree(hso_dev);
72dc1c09
GKH		 2774 return NULL;
2775}
2776
2777/* Creates a multiplexed AT channel */
2778static
2779struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
2780 int port,
2781 struct hso_shared_int *mux)
2782{
2783 struct hso_device *hso_dev;
2784 struct hso_serial *serial;
2785 int port_spec;
2786
2787 port_spec = HSO_INTF_MUX;
2788 port_spec &= ~HSO_PORT_MASK;
2789
2790 port_spec |= hso_mux_to_port(port);
2791 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT)
2792 return NULL;
2793
2794 hso_dev = hso_create_device(interface, port_spec);
2795 if (!hso_dev)
2796 return NULL;
2797
2798 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2799 if (!serial)
2800 goto exit;
2801
2802 hso_dev->port_data.dev_serial = serial;
2803 serial->parent = hso_dev;
2804
2805 if (hso_serial_common_create
2806 (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE))
2807 goto exit;
2808
2809 serial->tx_data_length--;
2810 serial->write_data = hso_mux_serial_write_data;
2811
2812 serial->shared_int = mux;
2813 mutex_lock(&serial->shared_int->shared_int_lock);
2814 serial->shared_int->ref_count++;
2815 mutex_unlock(&serial->shared_int->shared_int_lock);
2816
2817 /* and record this serial */
2818 set_serial_by_index(serial->minor, serial);
2819
2820 /* setup the proc dirs and files if needed */
2821 hso_log_port(hso_dev);
2822
2823 /* done, return it */
2824 return hso_dev;
2825
2826exit:
2827 if (serial) {
2828 tty_unregister_device(tty_drv, serial->minor);
2829 kfree(serial);
2830 }
2831 if (hso_dev)
e44578ea 2832 kfree(hso_dev);
72dc1c09
GKH		 2833 return NULL;
2834
2835}
2836
2837static void hso_free_shared_int(struct hso_shared_int *mux)
2838{
2839 usb_free_urb(mux->shared_intr_urb);
2840 kfree(mux->shared_intr_buf);
2841 mutex_unlock(&mux->shared_int_lock);
2842 kfree(mux);
2843}
2844
2845static
2846struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface)
2847{
2848 struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL);
2849
2850 if (!mux)
2851 return NULL;
2852
2853 mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT,
2854 USB_DIR_IN);
2855 if (!mux->intr_endp) {
2856 dev_err(&interface->dev, "Can't find INT IN endpoint\n");
2857 goto exit;
2858 }
2859
2860 mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL);
2861 if (!mux->shared_intr_urb) {
2862 dev_err(&interface->dev, "Could not allocate intr urb?");
2863 goto exit;
2864 }
d9ced80d
JD		 2865 mux->shared_intr_buf =
2866 kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize),
2867 GFP_KERNEL);
72dc1c09
GKH		 2868 if (!mux->shared_intr_buf) {
2869 dev_err(&interface->dev, "Could not allocate intr buf?");
2870 goto exit;
2871 }
2872
2873 mutex_init(&mux->shared_int_lock);
2874
2875 return mux;
2876
2877exit:
2878 kfree(mux->shared_intr_buf);
2879 usb_free_urb(mux->shared_intr_urb);
2880 kfree(mux);
2881 return NULL;
2882}
2883
2884/* Gets the port spec for a certain interface */
2885static int hso_get_config_data(struct usb_interface *interface)
2886{
2887 struct usb_device *usbdev = interface_to_usbdev(interface);
2888 u8 config_data[17];
2889 u32 if_num = interface->altsetting->desc.bInterfaceNumber;
2890 s32 result;
2891
2892 if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
2893 0x86, 0xC0, 0, 0, config_data, 17,
2894 USB_CTRL_SET_TIMEOUT) != 0x11) {
2895 return -EIO;
2896 }
2897
2898 switch (config_data[if_num]) {
2899 case 0x0:
2900 result = 0;
2901 break;
2902 case 0x1:
2903 result = HSO_PORT_DIAG;
2904 break;
2905 case 0x2:
2906 result = HSO_PORT_GPS;
2907 break;
2908 case 0x3:
2909 result = HSO_PORT_GPS_CONTROL;
2910 break;
2911 case 0x4:
2912 result = HSO_PORT_APP;
2913 break;
2914 case 0x5:
2915 result = HSO_PORT_APP2;
2916 break;
2917 case 0x6:
2918 result = HSO_PORT_CONTROL;
2919 break;
2920 case 0x7:
2921 result = HSO_PORT_NETWORK;
2922 break;
2923 case 0x8:
2924 result = HSO_PORT_MODEM;
2925 break;
2926 case 0x9:
2927 result = HSO_PORT_MSD;
2928 break;
2929 case 0xa:
2930 result = HSO_PORT_PCSC;
2931 break;
2932 case 0xb:
2933 result = HSO_PORT_VOICE;
2934 break;
2935 default:
2936 result = 0;
2937 }
2938
2939 if (result)
2940 result |= HSO_INTF_BULK;
2941
2942 if (config_data[16] & 0x1)
2943 result |= HSO_INFO_CRC_BUG;
2944
2945 return result;
2946}
2947
2948/* called once for each interface upon device insertion */
2949static int hso_probe(struct usb_interface *interface,
2950 const struct usb_device_id *id)
2951{
2952 int mux, i, if_num, port_spec;
2953 unsigned char port_mask;
2954 struct hso_device *hso_dev = NULL;
2955 struct hso_shared_int *shared_int;
2956 struct hso_device *tmp_dev = NULL;
2957
2958 if_num = interface->altsetting->desc.bInterfaceNumber;
2959
2960 /* Get the interface/port specification from either driver_info or from
2961 * the device itself */
2962 if (id->driver_info)
2963 port_spec = ((u32 *)(id->driver_info))[if_num];
2964 else
2965 port_spec = hso_get_config_data(interface);
2966
2967 if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
2968 dev_err(&interface->dev, "Not our interface\n");
2969 return -ENODEV;
2970 }
2971 /* Check if we need to switch to alt interfaces prior to port
2972 * configuration */
2973 if (interface->num_altsetting > 1)
2974 usb_set_interface(interface_to_usbdev(interface), if_num, 1);
2975 interface->needs_remote_wakeup = 1;
2976
2977 /* Allocate new hso device(s) */
2978 switch (port_spec & HSO_INTF_MASK) {
2979 case HSO_INTF_MUX:
2980 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2981 /* Create the network device */
2982 if (!disable_net) {
0de8ca59
JD		 2983 hso_dev = hso_create_net_device(interface,
2984 port_spec);
72dc1c09
GKH		 2985 if (!hso_dev)
2986 goto exit;
2987 tmp_dev = hso_dev;
2988 }
2989 }
2990
2991 if (hso_get_mux_ports(interface, &port_mask))
2992 /* TODO: de-allocate everything */
2993 goto exit;
2994
2995 shared_int = hso_create_shared_int(interface);
2996 if (!shared_int)
2997 goto exit;
2998
2999 for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) {
3000 if (port_mask & i) {
3001 hso_dev = hso_create_mux_serial_device(
3002 interface, i, shared_int);
3003 if (!hso_dev)
3004 goto exit;
3005 }
3006 }
3007
3008 if (tmp_dev)
3009 hso_dev = tmp_dev;
3010 break;
3011
3012 case HSO_INTF_BULK:
3013 /* It's a regular bulk interface */
8e95a202
JP		 3014 if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) &&
3015 !disable_net)
0de8ca59 3016 hso_dev = hso_create_net_device(interface, port_spec);
72dc1c09
GKH		 3017 else
3018 hso_dev =
3019 hso_create_bulk_serial_device(interface, port_spec);
3020 if (!hso_dev)
3021 goto exit;
3022 break;
3023 default:
3024 goto exit;
3025 }
3026
72dc1c09
GKH		 3027 /* save our data pointer in this device */
3028 usb_set_intfdata(interface, hso_dev);
3029
3030 /* done */
3031 return 0;
3032exit:
3033 hso_free_interface(interface);
3034 return -ENODEV;
3035}
3036
3037/* device removed, cleaning up */
3038static void hso_disconnect(struct usb_interface *interface)
3039{
3040 hso_free_interface(interface);
3041
3042 /* remove reference of our private data */
3043 usb_set_intfdata(interface, NULL);
72dc1c09
GKH		 3044}
3045
3046static void async_get_intf(struct work_struct *data)
3047{
3048 struct hso_device *hso_dev =
3049 container_of(data, struct hso_device, async_get_intf);
3050 usb_autopm_get_interface(hso_dev->interface);
3051}
3052
3053static void async_put_intf(struct work_struct *data)
3054{
3055 struct hso_device *hso_dev =
3056 container_of(data, struct hso_device, async_put_intf);
3057 usb_autopm_put_interface(hso_dev->interface);
3058}
3059
3060static int hso_get_activity(struct hso_device *hso_dev)
3061{
3062 if (hso_dev->usb->state == USB_STATE_SUSPENDED) {
3063 if (!hso_dev->is_active) {
3064 hso_dev->is_active = 1;
3065 schedule_work(&hso_dev->async_get_intf);
3066 }
3067 }
3068
3069 if (hso_dev->usb->state != USB_STATE_CONFIGURED)
3070 return -EAGAIN;
3071
3072 usb_mark_last_busy(hso_dev->usb);
3073
3074 return 0;
3075}
3076
3077static int hso_put_activity(struct hso_device *hso_dev)
3078{
3079 if (hso_dev->usb->state != USB_STATE_SUSPENDED) {
3080 if (hso_dev->is_active) {
3081 hso_dev->is_active = 0;
3082 schedule_work(&hso_dev->async_put_intf);
3083 return -EAGAIN;
3084 }
3085 }
3086 hso_dev->is_active = 0;
3087 return 0;
3088}
3089
3090/* called by kernel when we need to suspend device */
3091static int hso_suspend(struct usb_interface *iface, pm_message_t message)
3092{
3093 int i, result;
3094
3095 /* Stop all serial ports */
3096 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3097 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3098 result = hso_stop_serial_device(serial_table[i]);
3099 if (result)
3100 goto out;
3101 }
3102 }
3103
3104 /* Stop all network ports */
3105 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3106 if (network_table[i] &&
3107 (network_table[i]->interface == iface)) {
3108 result = hso_stop_net_device(network_table[i]);
3109 if (result)
3110 goto out;
3111 }
3112 }
3113
3114out:
3115 return 0;
3116}
3117
3118/* called by kernel when we need to resume device */
3119static int hso_resume(struct usb_interface *iface)
3120{
3121 int i, result = 0;
3122 struct hso_net *hso_net;
3123
3124 /* Start all serial ports */
3125 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3126 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3127 if (dev2ser(serial_table[i])->open_count) {
3128 result =
3129 hso_start_serial_device(serial_table[i], GFP_NOIO);
3130 hso_kick_transmit(dev2ser(serial_table[i]));
3131 if (result)
3132 goto out;
3133 }
3134 }
3135 }
3136
3137 /* Start all network ports */
3138 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3139 if (network_table[i] &&
3140 (network_table[i]->interface == iface)) {
3141 hso_net = dev2net(network_table[i]);
89930b7b
DJB		 3142 if (hso_net->flags & IFF_UP) {
3143 /* First transmit any lingering data,
3144 then restart the device. */
3145 if (hso_net->skb_tx_buf) {
3146 dev_dbg(&iface->dev,
3147 "Transmitting"
3148 " lingering data\n");
3149 hso_net_start_xmit(hso_net->skb_tx_buf,
3150 hso_net->net);
3151 hso_net->skb_tx_buf = NULL;
3152 }
3153 result = hso_start_net_device(network_table[i]);
3154 if (result)
3155 goto out;
72dc1c09 3156 }
72dc1c09
GKH		 3157 }
3158 }
3159
3160out:
3161 return result;
3162}
3163
68a351c5
JD		 3164static void reset_device(struct work_struct *data)
3165{
3166 struct hso_device *hso_dev =
3167 container_of(data, struct hso_device, reset_device);
3168 struct usb_device *usb = hso_dev->usb;
3169 int result;
3170
3171 if (hso_dev->usb_gone) {
3172 D1("No reset during disconnect\n");
3173 } else {
3174 result = usb_lock_device_for_reset(usb, hso_dev->interface);
3175 if (result < 0)
3176 D1("unable to lock device for reset: %d\n", result);
3177 else {
3178 usb_reset_device(usb);
3179 usb_unlock_device(usb);
3180 }
3181 }
3182}
3183
72dc1c09
GKH		 3184static void hso_serial_ref_free(struct kref *ref)
3185{
3186 struct hso_device *hso_dev = container_of(ref, struct hso_device, ref);
3187
3188 hso_free_serial_device(hso_dev);
3189}
3190
3191static void hso_free_interface(struct usb_interface *interface)
3192{
3193 struct hso_serial *hso_dev;
e136e303 3194 struct tty_struct *tty;
72dc1c09
GKH		 3195 int i;
3196
3197 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
8e95a202
JP		 3198 if (serial_table[i] &&
3199 (serial_table[i]->interface == interface)) {
72dc1c09 3200 hso_dev = dev2ser(serial_table[i]);
e136e303
AC		 3201 spin_lock_irq(&hso_dev->serial_lock);
3202 tty = tty_kref_get(hso_dev->tty);
3203 spin_unlock_irq(&hso_dev->serial_lock);
3204 if (tty)
3205 tty_hangup(tty);
ab153d84 3206 mutex_lock(&hso_dev->parent->mutex);
e136e303 3207 tty_kref_put(tty);
72dc1c09 3208 hso_dev->parent->usb_gone = 1;
ab153d84
DM		 3209 mutex_unlock(&hso_dev->parent->mutex);
3210 kref_put(&serial_table[i]->ref, hso_serial_ref_free);
72dc1c09
GKH		 3211 }
3212 }
3213
3214 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
8e95a202
JP		 3215 if (network_table[i] &&
3216 (network_table[i]->interface == interface)) {
72dc1c09
GKH		 3217 struct rfkill *rfk = dev2net(network_table[i])->rfkill;
3218 /* hso_stop_net_device doesn't stop the net queue since
3219 * traffic needs to start it again when suspended */
3220 netif_stop_queue(dev2net(network_table[i])->net);
3221 hso_stop_net_device(network_table[i]);
3222 cancel_work_sync(&network_table[i]->async_put_intf);
3223 cancel_work_sync(&network_table[i]->async_get_intf);
19d337df 3224 if (rfk) {
72dc1c09 3225 rfkill_unregister(rfk);
19d337df
JB		 3226 rfkill_destroy(rfk);
3227 }
72dc1c09
GKH		 3228 hso_free_net_device(network_table[i]);
3229 }
3230 }
3231}
3232
3233/* Helper functions */
3234
3235/* Get the endpoint ! */
3236static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
3237 int type, int dir)
3238{
3239 int i;
3240 struct usb_host_interface *iface = intf->cur_altsetting;
3241 struct usb_endpoint_descriptor *endp;
3242
3243 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3244 endp = &iface->endpoint[i].desc;
3245 if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) &&
f201a8a4 3246 (usb_endpoint_type(endp) == type))
72dc1c09
GKH		 3247 return endp;
3248 }
3249
3250 return NULL;
3251}
3252
3253/* Get the byte that describes which ports are enabled */
3254static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports)
3255{
3256 int i;
3257 struct usb_host_interface *iface = intf->cur_altsetting;
3258
3259 if (iface->extralen == 3) {
3260 *ports = iface->extra[2];
3261 return 0;
3262 }
3263
3264 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3265 if (iface->endpoint[i].extralen == 3) {
3266 *ports = iface->endpoint[i].extra[2];
3267 return 0;
3268 }
3269 }
3270
3271 return -1;
3272}
3273
3274/* interrupt urb needs to be submitted, used for serial read of muxed port */
3275static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int,
3276 struct usb_device *usb, gfp_t gfp)
3277{
3278 int result;
3279
3280 usb_fill_int_urb(shared_int->shared_intr_urb, usb,
3281 usb_rcvintpipe(usb,
3282 shared_int->intr_endp->bEndpointAddress & 0x7F),
3283 shared_int->shared_intr_buf,
d9ced80d 3284 1,
72dc1c09
GKH		 3285 intr_callback, shared_int,
3286 shared_int->intr_endp->bInterval);
3287
3288 result = usb_submit_urb(shared_int->shared_intr_urb, gfp);
3289 if (result)
3290 dev_warn(&usb->dev, "%s failed mux_intr_urb %d", __func__,
3291 result);
3292
3293 return result;
3294}
3295
3296/* operations setup of the serial interface */
6c59f569 3297static const struct tty_operations hso_serial_ops = {
72dc1c09
GKH		 3298 .open = hso_serial_open,
3299 .close = hso_serial_close,
3300 .write = hso_serial_write,
3301 .write_room = hso_serial_write_room,
542f5482 3302 .ioctl = hso_serial_ioctl,
72dc1c09
GKH		 3303 .set_termios = hso_serial_set_termios,
3304 .chars_in_buffer = hso_serial_chars_in_buffer,
3305 .tiocmget = hso_serial_tiocmget,
3306 .tiocmset = hso_serial_tiocmset,
8ef5ba63 3307 .unthrottle = hso_unthrottle
72dc1c09
GKH		 3308};
3309
3310static struct usb_driver hso_driver = {
3311 .name = driver_name,
3312 .probe = hso_probe,
3313 .disconnect = hso_disconnect,
3314 .id_table = hso_ids,
3315 .suspend = hso_suspend,
3316 .resume = hso_resume,
9c8f92ae 3317 .reset_resume = hso_resume,
72dc1c09
GKH		 3318 .supports_autosuspend = 1,
3319};
3320
3321static int __init hso_init(void)
3322{
3323 int i;
3324 int result;
3325
3326 /* put it in the log */
3327 printk(KERN_INFO "hso: %s\n", version);
3328
3329 /* Initialise the serial table semaphore and table */
3330 spin_lock_init(&serial_table_lock);
3331 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++)
3332 serial_table[i] = NULL;
3333
3334 /* allocate our driver using the proper amount of supported minors */
3335 tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS);
3336 if (!tty_drv)
3337 return -ENOMEM;
3338
3339 /* fill in all needed values */
3340 tty_drv->magic = TTY_DRIVER_MAGIC;
3341 tty_drv->owner = THIS_MODULE;
3342 tty_drv->driver_name = driver_name;
3343 tty_drv->name = tty_filename;
3344
3345 /* if major number is provided as parameter, use that one */
3346 if (tty_major)
3347 tty_drv->major = tty_major;
3348
3349 tty_drv->minor_start = 0;
3350 tty_drv->num = HSO_SERIAL_TTY_MINORS;
3351 tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
3352 tty_drv->subtype = SERIAL_TYPE_NORMAL;
3353 tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
3354 tty_drv->init_termios = tty_std_termios;
ac9720c3 3355 hso_init_termios(&tty_drv->init_termios);
72dc1c09
GKH		 3356 tty_set_operations(tty_drv, &hso_serial_ops);
3357
3358 /* register the tty driver */
3359 result = tty_register_driver(tty_drv);
3360 if (result) {
3361 printk(KERN_ERR "%s - tty_register_driver failed(%d)\n",
3362 __func__, result);
3363 return result;
3364 }
3365
3366 /* register this module as an usb driver */
3367 result = usb_register(&hso_driver);
3368 if (result) {
3369 printk(KERN_ERR "Could not register hso driver? error: %d\n",
3370 result);
3371 /* cleanup serial interface */
3372 tty_unregister_driver(tty_drv);
3373 return result;
3374 }
3375
3376 /* done */
3377 return 0;
3378}
3379
3380static void __exit hso_exit(void)
3381{
3382 printk(KERN_INFO "hso: unloaded\n");
3383
3384 tty_unregister_driver(tty_drv);
3385 /* deregister the usb driver */
3386 usb_deregister(&hso_driver);
3387}
3388
3389/* Module definitions */
3390module_init(hso_init);
3391module_exit(hso_exit);
3392
3393MODULE_AUTHOR(MOD_AUTHOR);
3394MODULE_DESCRIPTION(MOD_DESCRIPTION);
3395MODULE_LICENSE(MOD_LICENSE);
3396MODULE_INFO(Version, DRIVER_VERSION);
3397
3398/* change the debug level (eg: insmod hso.ko debug=0x04) */
3399MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
3400module_param(debug, int, S_IRUGO | S_IWUSR);
3401
3402/* set the major tty number (eg: insmod hso.ko tty_major=245) */
3403MODULE_PARM_DESC(tty_major, "Set the major tty number");
3404module_param(tty_major, int, S_IRUGO | S_IWUSR);
3405
3406/* disable network interface (eg: insmod hso.ko disable_net=1) */
3407MODULE_PARM_DESC(disable_net, "Disable the network interface");
3408module_param(disable_net, int, S_IRUGO | S_IWUSR);
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