]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/net/usb/hso.c
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
fsl_pq_mdio: Fix compile failure
[net-next-2.6.git] / drivers / net / usb / hso.c
CommitLineData
72dc1c09
GKH		 1/******************************************************************************
2 *
3 * Driver for Option High Speed Mobile Devices.
4 *
5 * Copyright (C) 2008 Option International
11cd29b0
DJB		 6 * Filip Aben <f.aben@option.com>
7 * Denis Joseph Barrow <d.barow@option.com>
72dc1c09
GKH		 8 * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd)
9 * <ajb@spheresystems.co.uk>
10 * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
11 * Copyright (C) 2008 Novell, Inc.
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
25 * USA
26 *
27 *
28 *****************************************************************************/
29
30/******************************************************************************
31 *
32 * Description of the device:
33 *
34 * Interface 0: Contains the IP network interface on the bulk end points.
35 * The multiplexed serial ports are using the interrupt and
36 * control endpoints.
37 * Interrupt contains a bitmap telling which multiplexed
38 * serialport needs servicing.
39 *
40 * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the
41 * port is opened, as this have a huge impact on the network port
42 * throughput.
43 *
542f5482
DJB		 44 * Interface 2: Standard modem interface - circuit switched interface, this
45 * can be used to make a standard ppp connection however it
46 * should not be used in conjunction with the IP network interface
47 * enabled for USB performance reasons i.e. if using this set
48 * ideally disable_net=1.
72dc1c09
GKH		 49 *
50 *****************************************************************************/
51
52#include <linux/sched.h>
53#include <linux/slab.h>
54#include <linux/init.h>
55#include <linux/delay.h>
56#include <linux/netdevice.h>
57#include <linux/module.h>
58#include <linux/ethtool.h>
59#include <linux/usb.h>
60#include <linux/timer.h>
61#include <linux/tty.h>
62#include <linux/tty_driver.h>
63#include <linux/tty_flip.h>
64#include <linux/kmod.h>
65#include <linux/rfkill.h>
66#include <linux/ip.h>
67#include <linux/uaccess.h>
68#include <linux/usb/cdc.h>
69#include <net/arp.h>
70#include <asm/byteorder.h>
542f5482
DJB		 71#include <linux/serial_core.h>
72#include <linux/serial.h>
72dc1c09
GKH		 73
74
75#define DRIVER_VERSION "1.2"
76#define MOD_AUTHOR "Option Wireless"
77#define MOD_DESCRIPTION "USB High Speed Option driver"
78#define MOD_LICENSE "GPL"
79
80#define HSO_MAX_NET_DEVICES 10
81#define HSO__MAX_MTU 2048
82#define DEFAULT_MTU 1500
83#define DEFAULT_MRU 1500
84
85#define CTRL_URB_RX_SIZE 1024
86#define CTRL_URB_TX_SIZE 64
87
88#define BULK_URB_RX_SIZE 4096
89#define BULK_URB_TX_SIZE 8192
90
91#define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU
92#define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU
93#define MUX_BULK_RX_BUF_COUNT 4
94#define USB_TYPE_OPTION_VENDOR 0x20
95
96/* These definitions are used with the struct hso_net flags element */
97/* - use *_bit operations on it. (bit indices not values.) */
98#define HSO_NET_RUNNING 0
99
100#define HSO_NET_TX_TIMEOUT (HZ*10)
101
72dc1c09
GKH		 102#define HSO_SERIAL_MAGIC 0x48534f31
103
104/* Number of ttys to handle */
105#define HSO_SERIAL_TTY_MINORS 256
106
107#define MAX_RX_URBS 2
108
0235f641
GKH		 109static inline struct hso_serial *get_serial_by_tty(struct tty_struct *tty)
110{
111 if (tty)
112 return tty->driver_data;
113 return NULL;
114}
72dc1c09
GKH		 115
116/*****************************************************************************/
117/* Debugging functions */
118/*****************************************************************************/
119#define D__(lvl_, fmt, arg...) \
120 do { \
121 printk(lvl_ "[%d:%s]: " fmt "\n", \
122 __LINE__, __func__, ## arg); \
123 } while (0)
124
125#define D_(lvl, args...) \
126 do { \
127 if (lvl & debug) \
128 D__(KERN_INFO, args); \
129 } while (0)
130
131#define D1(args...) D_(0x01, ##args)
132#define D2(args...) D_(0x02, ##args)
133#define D3(args...) D_(0x04, ##args)
134#define D4(args...) D_(0x08, ##args)
135#define D5(args...) D_(0x10, ##args)
136
137/*****************************************************************************/
138/* Enumerators */
139/*****************************************************************************/
140enum pkt_parse_state {
141 WAIT_IP,
142 WAIT_DATA,
143 WAIT_SYNC
144};
145
146/*****************************************************************************/
147/* Structs */
148/*****************************************************************************/
149
150struct hso_shared_int {
151 struct usb_endpoint_descriptor *intr_endp;
152 void *shared_intr_buf;
153 struct urb *shared_intr_urb;
154 struct usb_device *usb;
155 int use_count;
156 int ref_count;
157 struct mutex shared_int_lock;
158};
159
160struct hso_net {
161 struct hso_device *parent;
162 struct net_device *net;
163 struct rfkill *rfkill;
164
165 struct usb_endpoint_descriptor *in_endp;
166 struct usb_endpoint_descriptor *out_endp;
167
168 struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT];
169 struct urb *mux_bulk_tx_urb;
170 void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT];
171 void *mux_bulk_tx_buf;
172
173 struct sk_buff *skb_rx_buf;
174 struct sk_buff *skb_tx_buf;
175
176 enum pkt_parse_state rx_parse_state;
177 spinlock_t net_lock;
178
179 unsigned short rx_buf_size;
180 unsigned short rx_buf_missing;
181 struct iphdr rx_ip_hdr;
182
183 unsigned long flags;
184};
185
8ef5ba63
DJB		 186enum rx_ctrl_state{
187 RX_IDLE,
188 RX_SENT,
189 RX_PENDING
190};
191
542f5482
DJB		 192#define BM_REQUEST_TYPE (0xa1)
193#define B_NOTIFICATION (0x20)
194#define W_VALUE (0x0)
195#define W_INDEX (0x2)
196#define W_LENGTH (0x2)
197
198#define B_OVERRUN (0x1<<6)
199#define B_PARITY (0x1<<5)
200#define B_FRAMING (0x1<<4)
201#define B_RING_SIGNAL (0x1<<3)
202#define B_BREAK (0x1<<2)
203#define B_TX_CARRIER (0x1<<1)
204#define B_RX_CARRIER (0x1<<0)
205
206struct hso_serial_state_notification {
207 u8 bmRequestType;
208 u8 bNotification;
209 u16 wValue;
210 u16 wIndex;
211 u16 wLength;
212 u16 UART_state_bitmap;
213} __attribute__((packed));
214
215struct hso_tiocmget {
216 struct mutex mutex;
217 wait_queue_head_t waitq;
218 int intr_completed;
219 struct usb_endpoint_descriptor *endp;
220 struct urb *urb;
221 struct hso_serial_state_notification serial_state_notification;
222 u16 prev_UART_state_bitmap;
223 struct uart_icount icount;
224};
225
226
72dc1c09
GKH		 227struct hso_serial {
228 struct hso_device *parent;
229 int magic;
230 u8 minor;
231
232 struct hso_shared_int *shared_int;
233
234 /* rx/tx urb could be either a bulk urb or a control urb depending
235 on which serial port it is used on. */
236 struct urb *rx_urb[MAX_RX_URBS];
237 u8 num_rx_urbs;
238 u8 *rx_data[MAX_RX_URBS];
239 u16 rx_data_length; /* should contain allocated length */
240
241 struct urb *tx_urb;
242 u8 *tx_data;
243 u8 *tx_buffer;
244 u16 tx_data_length; /* should contain allocated length */
245 u16 tx_data_count;
246 u16 tx_buffer_count;
247 struct usb_ctrlrequest ctrl_req_tx;
248 struct usb_ctrlrequest ctrl_req_rx;
249
250 struct usb_endpoint_descriptor *in_endp;
251 struct usb_endpoint_descriptor *out_endp;
252
8ef5ba63 253 enum rx_ctrl_state rx_state;
72dc1c09
GKH		 254 u8 rts_state;
255 u8 dtr_state;
256 unsigned tx_urb_used:1;
257
258 /* from usb_serial_port */
259 struct tty_struct *tty;
260 int open_count;
261 spinlock_t serial_lock;
262
263 int (*write_data) (struct hso_serial *serial);
542f5482 264 struct hso_tiocmget *tiocmget;
8ef5ba63
DJB		 265 /* Hacks required to get flow control
266 * working on the serial receive buffers
267 * so as not to drop characters on the floor.
268 */
269 int curr_rx_urb_idx;
270 u16 curr_rx_urb_offset;
271 u8 rx_urb_filled[MAX_RX_URBS];
272 struct tasklet_struct unthrottle_tasklet;
273 struct work_struct retry_unthrottle_workqueue;
72dc1c09
GKH		 274};
275
276struct hso_device {
277 union {
278 struct hso_serial *dev_serial;
279 struct hso_net *dev_net;
280 } port_data;
281
282 u32 port_spec;
283
284 u8 is_active;
285 u8 usb_gone;
286 struct work_struct async_get_intf;
287 struct work_struct async_put_intf;
288
289 struct usb_device *usb;
290 struct usb_interface *interface;
291
292 struct device *dev;
293 struct kref ref;
ab153d84 294 struct mutex mutex;
72dc1c09
GKH		 295};
296
297/* Type of interface */
298#define HSO_INTF_MASK 0xFF00
299#define HSO_INTF_MUX 0x0100
300#define HSO_INTF_BULK 0x0200
301
302/* Type of port */
303#define HSO_PORT_MASK 0xFF
304#define HSO_PORT_NO_PORT 0x0
305#define HSO_PORT_CONTROL 0x1
306#define HSO_PORT_APP 0x2
307#define HSO_PORT_GPS 0x3
308#define HSO_PORT_PCSC 0x4
309#define HSO_PORT_APP2 0x5
310#define HSO_PORT_GPS_CONTROL 0x6
311#define HSO_PORT_MSD 0x7
312#define HSO_PORT_VOICE 0x8
313#define HSO_PORT_DIAG2 0x9
314#define HSO_PORT_DIAG 0x10
315#define HSO_PORT_MODEM 0x11
316#define HSO_PORT_NETWORK 0x12
317
318/* Additional device info */
319#define HSO_INFO_MASK 0xFF000000
320#define HSO_INFO_CRC_BUG 0x01000000
321
322/*****************************************************************************/
323/* Prototypes */
324/*****************************************************************************/
325/* Serial driver functions */
326static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
327 unsigned int set, unsigned int clear);
328static void ctrl_callback(struct urb *urb);
8ef5ba63 329static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial);
72dc1c09
GKH		 330static void hso_kick_transmit(struct hso_serial *serial);
331/* Helper functions */
332static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int,
333 struct usb_device *usb, gfp_t gfp);
334static void log_usb_status(int status, const char *function);
335static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
336 int type, int dir);
337static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports);
338static void hso_free_interface(struct usb_interface *intf);
339static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags);
340static int hso_stop_serial_device(struct hso_device *hso_dev);
341static int hso_start_net_device(struct hso_device *hso_dev);
342static void hso_free_shared_int(struct hso_shared_int *shared_int);
343static int hso_stop_net_device(struct hso_device *hso_dev);
344static void hso_serial_ref_free(struct kref *ref);
8ef5ba63
DJB		 345static void hso_std_serial_read_bulk_callback(struct urb *urb);
346static int hso_mux_serial_read(struct hso_serial *serial);
72dc1c09
GKH		 347static void async_get_intf(struct work_struct *data);
348static void async_put_intf(struct work_struct *data);
349static int hso_put_activity(struct hso_device *hso_dev);
350static int hso_get_activity(struct hso_device *hso_dev);
542f5482 351static void tiocmget_intr_callback(struct urb *urb);
72dc1c09
GKH		 352/*****************************************************************************/
353/* Helping functions */
354/*****************************************************************************/
355
356/* #define DEBUG */
357
0235f641
GKH		 358static inline struct hso_net *dev2net(struct hso_device *hso_dev)
359{
360 return hso_dev->port_data.dev_net;
361}
362
363static inline struct hso_serial *dev2ser(struct hso_device *hso_dev)
364{
365 return hso_dev->port_data.dev_serial;
366}
72dc1c09
GKH		 367
368/* Debugging functions */
369#ifdef DEBUG
370static void dbg_dump(int line_count, const char *func_name, unsigned char *buf,
371 unsigned int len)
372{
0235f641 373 static char name[255];
72dc1c09 374
0235f641
GKH		 375 sprintf(name, "hso[%d:%s]", line_count, func_name);
376 print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len);
72dc1c09
GKH		 377}
378
379#define DUMP(buf_, len_) \
380 dbg_dump(__LINE__, __func__, buf_, len_)
381
382#define DUMP1(buf_, len_) \
383 do { \
384 if (0x01 & debug) \
385 DUMP(buf_, len_); \
386 } while (0)
387#else
388#define DUMP(buf_, len_)
389#define DUMP1(buf_, len_)
390#endif
391
392/* module parameters */
393static int debug;
394static int tty_major;
395static int disable_net;
396
397/* driver info */
398static const char driver_name[] = "hso";
399static const char tty_filename[] = "ttyHS";
400static const char *version = __FILE__ ": " DRIVER_VERSION " " MOD_AUTHOR;
401/* the usb driver itself (registered in hso_init) */
402static struct usb_driver hso_driver;
403/* serial structures */
404static struct tty_driver *tty_drv;
405static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS];
406static struct hso_device *network_table[HSO_MAX_NET_DEVICES];
407static spinlock_t serial_table_lock;
72dc1c09
GKH		 408
409static const s32 default_port_spec[] = {
410 HSO_INTF_MUX | HSO_PORT_NETWORK,
411 HSO_INTF_BULK | HSO_PORT_DIAG,
412 HSO_INTF_BULK | HSO_PORT_MODEM,
413 0
414};
415
416static const s32 icon321_port_spec[] = {
417 HSO_INTF_MUX | HSO_PORT_NETWORK,
418 HSO_INTF_BULK | HSO_PORT_DIAG2,
419 HSO_INTF_BULK | HSO_PORT_MODEM,
420 HSO_INTF_BULK | HSO_PORT_DIAG,
421 0
422};
423
424#define default_port_device(vendor, product) \
425 USB_DEVICE(vendor, product), \
426 .driver_info = (kernel_ulong_t)default_port_spec
427
428#define icon321_port_device(vendor, product) \
429 USB_DEVICE(vendor, product), \
430 .driver_info = (kernel_ulong_t)icon321_port_spec
431
432/* list of devices we support */
433static const struct usb_device_id hso_ids[] = {
434 {default_port_device(0x0af0, 0x6711)},
435 {default_port_device(0x0af0, 0x6731)},
436 {default_port_device(0x0af0, 0x6751)},
437 {default_port_device(0x0af0, 0x6771)},
438 {default_port_device(0x0af0, 0x6791)},
439 {default_port_device(0x0af0, 0x6811)},
440 {default_port_device(0x0af0, 0x6911)},
441 {default_port_device(0x0af0, 0x6951)},
442 {default_port_device(0x0af0, 0x6971)},
443 {default_port_device(0x0af0, 0x7011)},
444 {default_port_device(0x0af0, 0x7031)},
445 {default_port_device(0x0af0, 0x7051)},
446 {default_port_device(0x0af0, 0x7071)},
447 {default_port_device(0x0af0, 0x7111)},
448 {default_port_device(0x0af0, 0x7211)},
449 {default_port_device(0x0af0, 0x7251)},
450 {default_port_device(0x0af0, 0x7271)},
451 {default_port_device(0x0af0, 0x7311)},
452 {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */
453 {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */
454 {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */
95eacee8 455 {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */
72dc1c09
GKH		 456 {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */
457 {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */
67dd8246 458 {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */
72dc1c09
GKH		 459 {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */
460 {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */
461 {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */
bab04c3a
DJB		 462 {USB_DEVICE(0x0af0, 0x7701)},
463 {USB_DEVICE(0x0af0, 0x7801)},
464 {USB_DEVICE(0x0af0, 0x7901)},
9961d842
JD		 465 {USB_DEVICE(0x0af0, 0x8200)},
466 {USB_DEVICE(0x0af0, 0x8201)},
467 {USB_DEVICE(0x0af0, 0xd035)},
67dd8246 468 {USB_DEVICE(0x0af0, 0xd055)},
9961d842
JD		 469 {USB_DEVICE(0x0af0, 0xd155)},
470 {USB_DEVICE(0x0af0, 0xd255)},
471 {USB_DEVICE(0x0af0, 0xd057)},
472 {USB_DEVICE(0x0af0, 0xd157)},
473 {USB_DEVICE(0x0af0, 0xd257)},
474 {USB_DEVICE(0x0af0, 0xd357)},
72dc1c09
GKH		 475 {}
476};
477MODULE_DEVICE_TABLE(usb, hso_ids);
478
479/* Sysfs attribute */
480static ssize_t hso_sysfs_show_porttype(struct device *dev,
481 struct device_attribute *attr,
482 char *buf)
483{
484 struct hso_device *hso_dev = dev->driver_data;
485 char *port_name;
486
487 if (!hso_dev)
488 return 0;
489
490 switch (hso_dev->port_spec & HSO_PORT_MASK) {
491 case HSO_PORT_CONTROL:
492 port_name = "Control";
493 break;
494 case HSO_PORT_APP:
495 port_name = "Application";
496 break;
497 case HSO_PORT_APP2:
498 port_name = "Application2";
499 break;
500 case HSO_PORT_GPS:
501 port_name = "GPS";
502 break;
503 case HSO_PORT_GPS_CONTROL:
504 port_name = "GPS Control";
505 break;
506 case HSO_PORT_PCSC:
507 port_name = "PCSC";
508 break;
509 case HSO_PORT_DIAG:
510 port_name = "Diagnostic";
511 break;
512 case HSO_PORT_DIAG2:
513 port_name = "Diagnostic2";
514 break;
515 case HSO_PORT_MODEM:
516 port_name = "Modem";
517 break;
518 case HSO_PORT_NETWORK:
519 port_name = "Network";
520 break;
521 default:
522 port_name = "Unknown";
523 break;
524 }
525
526 return sprintf(buf, "%s\n", port_name);
527}
528static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL);
529
8ef5ba63
DJB		 530static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb)
531{
532 int idx;
533
534 for (idx = 0; idx < serial->num_rx_urbs; idx++)
535 if (serial->rx_urb[idx] == urb)
536 return idx;
537 dev_err(serial->parent->dev, "hso_urb_to_index failed\n");
538 return -1;
539}
540
72dc1c09
GKH		 541/* converts mux value to a port spec value */
542static u32 hso_mux_to_port(int mux)
543{
544 u32 result;
545
546 switch (mux) {
547 case 0x1:
548 result = HSO_PORT_CONTROL;
549 break;
550 case 0x2:
551 result = HSO_PORT_APP;
552 break;
553 case 0x4:
554 result = HSO_PORT_PCSC;
555 break;
556 case 0x8:
557 result = HSO_PORT_GPS;
558 break;
559 case 0x10:
560 result = HSO_PORT_APP2;
561 break;
562 default:
563 result = HSO_PORT_NO_PORT;
564 }
565 return result;
566}
567
568/* converts port spec value to a mux value */
569static u32 hso_port_to_mux(int port)
570{
571 u32 result;
572
573 switch (port & HSO_PORT_MASK) {
574 case HSO_PORT_CONTROL:
575 result = 0x0;
576 break;
577 case HSO_PORT_APP:
578 result = 0x1;
579 break;
580 case HSO_PORT_PCSC:
581 result = 0x2;
582 break;
583 case HSO_PORT_GPS:
584 result = 0x3;
585 break;
586 case HSO_PORT_APP2:
587 result = 0x4;
588 break;
589 default:
590 result = 0x0;
591 }
592 return result;
593}
594
595static struct hso_serial *get_serial_by_shared_int_and_type(
596 struct hso_shared_int *shared_int,
597 int mux)
598{
599 int i, port;
600
601 port = hso_mux_to_port(mux);
602
603 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
604 if (serial_table[i]
605 && (dev2ser(serial_table[i])->shared_int == shared_int)
606 && ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) {
607 return dev2ser(serial_table[i]);
608 }
609 }
610
611 return NULL;
612}
613
614static struct hso_serial *get_serial_by_index(unsigned index)
615{
0235f641 616 struct hso_serial *serial = NULL;
72dc1c09
GKH		 617 unsigned long flags;
618
72dc1c09 619 spin_lock_irqsave(&serial_table_lock, flags);
0235f641
GKH		 620 if (serial_table[index])
621 serial = dev2ser(serial_table[index]);
72dc1c09
GKH		 622 spin_unlock_irqrestore(&serial_table_lock, flags);
623
624 return serial;
625}
626
627static int get_free_serial_index(void)
628{
629 int index;
630 unsigned long flags;
631
632 spin_lock_irqsave(&serial_table_lock, flags);
633 for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) {
634 if (serial_table[index] == NULL) {
635 spin_unlock_irqrestore(&serial_table_lock, flags);
636 return index;
637 }
638 }
639 spin_unlock_irqrestore(&serial_table_lock, flags);
640
641 printk(KERN_ERR "%s: no free serial devices in table\n", __func__);
642 return -1;
643}
644
645static void set_serial_by_index(unsigned index, struct hso_serial *serial)
646{
647 unsigned long flags;
0235f641 648
72dc1c09
GKH		 649 spin_lock_irqsave(&serial_table_lock, flags);
650 if (serial)
651 serial_table[index] = serial->parent;
652 else
653 serial_table[index] = NULL;
654 spin_unlock_irqrestore(&serial_table_lock, flags);
655}
656
0235f641 657/* log a meaningful explanation of an USB status */
72dc1c09
GKH		 658static void log_usb_status(int status, const char *function)
659{
660 char *explanation;
661
662 switch (status) {
663 case -ENODEV:
664 explanation = "no device";
665 break;
666 case -ENOENT:
667 explanation = "endpoint not enabled";
668 break;
669 case -EPIPE:
670 explanation = "endpoint stalled";
671 break;
672 case -ENOSPC:
673 explanation = "not enough bandwidth";
674 break;
675 case -ESHUTDOWN:
676 explanation = "device disabled";
677 break;
678 case -EHOSTUNREACH:
679 explanation = "device suspended";
680 break;
681 case -EINVAL:
682 case -EAGAIN:
683 case -EFBIG:
684 case -EMSGSIZE:
685 explanation = "internal error";
686 break;
687 default:
688 explanation = "unknown status";
689 break;
690 }
691 D1("%s: received USB status - %s (%d)", function, explanation, status);
692}
693
694/* Network interface functions */
695
696/* called when net interface is brought up by ifconfig */
697static int hso_net_open(struct net_device *net)
698{
699 struct hso_net *odev = netdev_priv(net);
700 unsigned long flags = 0;
701
702 if (!odev) {
703 dev_err(&net->dev, "No net device !\n");
704 return -ENODEV;
705 }
706
707 odev->skb_tx_buf = NULL;
708
709 /* setup environment */
710 spin_lock_irqsave(&odev->net_lock, flags);
711 odev->rx_parse_state = WAIT_IP;
712 odev->rx_buf_size = 0;
713 odev->rx_buf_missing = sizeof(struct iphdr);
714 spin_unlock_irqrestore(&odev->net_lock, flags);
715
72dc1c09
GKH		 716 /* We are up and running. */
717 set_bit(HSO_NET_RUNNING, &odev->flags);
889bd9b6 718 hso_start_net_device(odev->parent);
72dc1c09
GKH		 719
720 /* Tell the kernel we are ready to start receiving from it */
721 netif_start_queue(net);
722
723 return 0;
724}
725
726/* called when interface is brought down by ifconfig */
727static int hso_net_close(struct net_device *net)
728{
729 struct hso_net *odev = netdev_priv(net);
730
731 /* we don't need the queue anymore */
732 netif_stop_queue(net);
733 /* no longer running */
734 clear_bit(HSO_NET_RUNNING, &odev->flags);
735
736 hso_stop_net_device(odev->parent);
737
738 /* done */
739 return 0;
740}
741
742/* USB tells is xmit done, we should start the netqueue again */
743static void write_bulk_callback(struct urb *urb)
744{
745 struct hso_net *odev = urb->context;
746 int status = urb->status;
747
748 /* Sanity check */
749 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
750 dev_err(&urb->dev->dev, "%s: device not running\n", __func__);
751 return;
752 }
753
754 /* Do we still have a valid kernel network device? */
755 if (!netif_device_present(odev->net)) {
756 dev_err(&urb->dev->dev, "%s: net device not present\n",
757 __func__);
758 return;
759 }
760
761 /* log status, but don't act on it, we don't need to resubmit anything
762 * anyhow */
763 if (status)
764 log_usb_status(status, __func__);
765
766 hso_put_activity(odev->parent);
767
768 /* Tell the network interface we are ready for another frame */
769 netif_wake_queue(odev->net);
770}
771
772/* called by kernel when we need to transmit a packet */
773static int hso_net_start_xmit(struct sk_buff *skb, struct net_device *net)
774{
775 struct hso_net *odev = netdev_priv(net);
776 int result;
777
778 /* Tell the kernel, "No more frames 'til we are done with this one." */
779 netif_stop_queue(net);
780 if (hso_get_activity(odev->parent) == -EAGAIN) {
781 odev->skb_tx_buf = skb;
782 return 0;
783 }
784
785 /* log if asked */
786 DUMP1(skb->data, skb->len);
787 /* Copy it from kernel memory to OUR memory */
788 memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len);
789 D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE);
790
791 /* Fill in the URB for shipping it out. */
792 usb_fill_bulk_urb(odev->mux_bulk_tx_urb,
793 odev->parent->usb,
794 usb_sndbulkpipe(odev->parent->usb,
795 odev->out_endp->
796 bEndpointAddress & 0x7F),
797 odev->mux_bulk_tx_buf, skb->len, write_bulk_callback,
798 odev);
799
800 /* Deal with the Zero Length packet problem, I hope */
801 odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET;
802
803 /* Send the URB on its merry way. */
804 result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC);
805 if (result) {
806 dev_warn(&odev->parent->interface->dev,
807 "failed mux_bulk_tx_urb %d", result);
808 net->stats.tx_errors++;
809 netif_start_queue(net);
810 } else {
811 net->stats.tx_packets++;
812 net->stats.tx_bytes += skb->len;
813 /* And tell the kernel when the last transmit started. */
814 net->trans_start = jiffies;
815 }
816 dev_kfree_skb(skb);
817 /* we're done */
818 return result;
819}
820
821static void hso_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
822{
823 struct hso_net *odev = netdev_priv(net);
824
825 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
826 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
827 usb_make_path(odev->parent->usb, info->bus_info, sizeof info->bus_info);
828}
829
830static struct ethtool_ops ops = {
831 .get_drvinfo = hso_get_drvinfo,
832 .get_link = ethtool_op_get_link
833};
834
835/* called when a packet did not ack after watchdogtimeout */
836static void hso_net_tx_timeout(struct net_device *net)
837{
838 struct hso_net *odev = netdev_priv(net);
839
840 if (!odev)
841 return;
842
843 /* Tell syslog we are hosed. */
844 dev_warn(&net->dev, "Tx timed out.\n");
845
846 /* Tear the waiting frame off the list */
847 if (odev->mux_bulk_tx_urb
848 && (odev->mux_bulk_tx_urb->status == -EINPROGRESS))
849 usb_unlink_urb(odev->mux_bulk_tx_urb);
850
851 /* Update statistics */
852 net->stats.tx_errors++;
853}
854
855/* make a real packet from the received USB buffer */
856static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt,
857 unsigned int count, unsigned char is_eop)
858{
859 unsigned short temp_bytes;
860 unsigned short buffer_offset = 0;
861 unsigned short frame_len;
862 unsigned char *tmp_rx_buf;
863
864 /* log if needed */
865 D1("Rx %d bytes", count);
866 DUMP(ip_pkt, min(128, (int)count));
867
868 while (count) {
869 switch (odev->rx_parse_state) {
870 case WAIT_IP:
871 /* waiting for IP header. */
872 /* wanted bytes - size of ip header */
873 temp_bytes =
874 (count <
875 odev->rx_buf_missing) ? count : odev->
876 rx_buf_missing;
877
878 memcpy(((unsigned char *)(&odev->rx_ip_hdr)) +
879 odev->rx_buf_size, ip_pkt + buffer_offset,
880 temp_bytes);
881
882 odev->rx_buf_size += temp_bytes;
883 buffer_offset += temp_bytes;
884 odev->rx_buf_missing -= temp_bytes;
885 count -= temp_bytes;
886
887 if (!odev->rx_buf_missing) {
888 /* header is complete allocate an sk_buffer and
889 * continue to WAIT_DATA */
890 frame_len = ntohs(odev->rx_ip_hdr.tot_len);
891
892 if ((frame_len > DEFAULT_MRU) ||
893 (frame_len < sizeof(struct iphdr))) {
894 dev_err(&odev->net->dev,
895 "Invalid frame (%d) length\n",
896 frame_len);
897 odev->rx_parse_state = WAIT_SYNC;
898 continue;
899 }
900 /* Allocate an sk_buff */
901 odev->skb_rx_buf = dev_alloc_skb(frame_len);
902 if (!odev->skb_rx_buf) {
903 /* We got no receive buffer. */
904 D1("could not allocate memory");
905 odev->rx_parse_state = WAIT_SYNC;
906 return;
907 }
908 /* Here's where it came from */
909 odev->skb_rx_buf->dev = odev->net;
910
911 /* Copy what we got so far. make room for iphdr
912 * after tail. */
913 tmp_rx_buf =
914 skb_put(odev->skb_rx_buf,
915 sizeof(struct iphdr));
916 memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr),
917 sizeof(struct iphdr));
918
919 /* ETH_HLEN */
920 odev->rx_buf_size = sizeof(struct iphdr);
921
922 /* Filip actually use .tot_len */
923 odev->rx_buf_missing =
924 frame_len - sizeof(struct iphdr);
925 odev->rx_parse_state = WAIT_DATA;
926 }
927 break;
928
929 case WAIT_DATA:
930 temp_bytes = (count < odev->rx_buf_missing)
931 ? count : odev->rx_buf_missing;
932
933 /* Copy the rest of the bytes that are left in the
934 * buffer into the waiting sk_buf. */
935 /* Make room for temp_bytes after tail. */
936 tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes);
937 memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes);
938
939 odev->rx_buf_missing -= temp_bytes;
940 count -= temp_bytes;
941 buffer_offset += temp_bytes;
942 odev->rx_buf_size += temp_bytes;
943 if (!odev->rx_buf_missing) {
944 /* Packet is complete. Inject into stack. */
945 /* We have IP packet here */
09640e63 946 odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP);
72dc1c09
GKH		 947 /* don't check it */
948 odev->skb_rx_buf->ip_summed =
949 CHECKSUM_UNNECESSARY;
950
951 skb_reset_mac_header(odev->skb_rx_buf);
952
953 /* Ship it off to the kernel */
954 netif_rx(odev->skb_rx_buf);
955 /* No longer our buffer. */
956 odev->skb_rx_buf = NULL;
957
958 /* update out statistics */
959 odev->net->stats.rx_packets++;
960
961 odev->net->stats.rx_bytes += odev->rx_buf_size;
962
963 odev->rx_buf_size = 0;
964 odev->rx_buf_missing = sizeof(struct iphdr);
965 odev->rx_parse_state = WAIT_IP;
966 }
967 break;
968
969 case WAIT_SYNC:
970 D1(" W_S");
971 count = 0;
972 break;
973 default:
974 D1(" ");
975 count--;
976 break;
977 }
978 }
979
980 /* Recovery mechanism for WAIT_SYNC state. */
981 if (is_eop) {
982 if (odev->rx_parse_state == WAIT_SYNC) {
983 odev->rx_parse_state = WAIT_IP;
984 odev->rx_buf_size = 0;
985 odev->rx_buf_missing = sizeof(struct iphdr);
986 }
987 }
988}
989
990/* Moving data from usb to kernel (in interrupt state) */
991static void read_bulk_callback(struct urb *urb)
992{
993 struct hso_net *odev = urb->context;
994 struct net_device *net;
995 int result;
996 int status = urb->status;
997
998 /* is al ok? (Filip: Who's Al ?) */
999 if (status) {
1000 log_usb_status(status, __func__);
1001 return;
1002 }
1003
1004 /* Sanity check */
1005 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
1006 D1("BULK IN callback but driver is not active!");
1007 return;
1008 }
1009 usb_mark_last_busy(urb->dev);
1010
1011 net = odev->net;
1012
1013 if (!netif_device_present(net)) {
1014 /* Somebody killed our network interface... */
1015 return;
1016 }
1017
1018 if (odev->parent->port_spec & HSO_INFO_CRC_BUG) {
1019 u32 rest;
1020 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1021 rest = urb->actual_length % odev->in_endp->wMaxPacketSize;
1022 if (((rest == 5) || (rest == 6))
1023 && !memcmp(((u8 *) urb->transfer_buffer) +
1024 urb->actual_length - 4, crc_check, 4)) {
1025 urb->actual_length -= 4;
1026 }
1027 }
1028
1029 /* do we even have a packet? */
1030 if (urb->actual_length) {
1031 /* Handle the IP stream, add header and push it onto network
1032 * stack if the packet is complete. */
1033 spin_lock(&odev->net_lock);
1034 packetizeRx(odev, urb->transfer_buffer, urb->actual_length,
1035 (urb->transfer_buffer_length >
1036 urb->actual_length) ? 1 : 0);
1037 spin_unlock(&odev->net_lock);
1038 }
1039
1040 /* We are done with this URB, resubmit it. Prep the USB to wait for
1041 * another frame. Reuse same as received. */
1042 usb_fill_bulk_urb(urb,
1043 odev->parent->usb,
1044 usb_rcvbulkpipe(odev->parent->usb,
1045 odev->in_endp->
1046 bEndpointAddress & 0x7F),
1047 urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE,
1048 read_bulk_callback, odev);
1049
1050 /* Give this to the USB subsystem so it can tell us when more data
1051 * arrives. */
1052 result = usb_submit_urb(urb, GFP_ATOMIC);
1053 if (result)
1054 dev_warn(&odev->parent->interface->dev,
1055 "%s failed submit mux_bulk_rx_urb %d", __func__,
1056 result);
1057}
1058
1059/* Serial driver functions */
1060
ac9720c3 1061static void hso_init_termios(struct ktermios *termios)
72dc1c09 1062{
72dc1c09
GKH		 1063 /*
1064 * The default requirements for this device are:
1065 */
72dc1c09
GKH		 1066 termios->c_iflag &=
1067 ~(IGNBRK /* disable ignore break */
1068 | BRKINT /* disable break causes interrupt */
1069 | PARMRK /* disable mark parity errors */
1070 | ISTRIP /* disable clear high bit of input characters */
1071 | INLCR /* disable translate NL to CR */
1072 | IGNCR /* disable ignore CR */
1073 | ICRNL /* disable translate CR to NL */
1074 | IXON); /* disable enable XON/XOFF flow control */
1075
1076 /* disable postprocess output characters */
1077 termios->c_oflag &= ~OPOST;
1078
1079 termios->c_lflag &=
1080 ~(ECHO /* disable echo input characters */
1081 | ECHONL /* disable echo new line */
1082 | ICANON /* disable erase, kill, werase, and rprnt
1083 special characters */
1084 | ISIG /* disable interrupt, quit, and suspend special
1085 characters */
1086 | IEXTEN); /* disable non-POSIX special characters */
1087
1088 termios->c_cflag &=
1089 ~(CSIZE /* no size */
1090 | PARENB /* disable parity bit */
1091 | CBAUD /* clear current baud rate */
1092 | CBAUDEX); /* clear current buad rate */
1093
1094 termios->c_cflag |= CS8; /* character size 8 bits */
1095
1096 /* baud rate 115200 */
ac9720c3
AC		 1097 tty_termios_encode_baud_rate(termios, 115200, 115200);
1098}
1099
1100static void _hso_serial_set_termios(struct tty_struct *tty,
1101 struct ktermios *old)
1102{
1103 struct hso_serial *serial = get_serial_by_tty(tty);
1104 struct ktermios *termios;
1105
1106 if (!serial) {
1107 printk(KERN_ERR "%s: no tty structures", __func__);
1108 return;
1109 }
1110
1111 D4("port %d", serial->minor);
72dc1c09
GKH		 1112
1113 /*
ac9720c3 1114 * Fix up unsupported bits
72dc1c09 1115 */
ac9720c3
AC		 1116 termios = tty->termios;
1117 termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */
1118
1119 termios->c_cflag &=
1120 ~(CSIZE /* no size */
1121 | PARENB /* disable parity bit */
1122 | CBAUD /* clear current baud rate */
1123 | CBAUDEX); /* clear current buad rate */
1124
1125 termios->c_cflag |= CS8; /* character size 8 bits */
1126
1127 /* baud rate 115200 */
1128 tty_encode_baud_rate(tty, 115200, 115200);
72dc1c09
GKH		 1129}
1130
8ef5ba63
DJB		 1131static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb)
1132{
1133 int result;
1134#ifdef CONFIG_HSO_AUTOPM
1135 usb_mark_last_busy(urb->dev);
1136#endif
1137 /* We are done with this URB, resubmit it. Prep the USB to wait for
1138 * another frame */
1139 usb_fill_bulk_urb(urb, serial->parent->usb,
1140 usb_rcvbulkpipe(serial->parent->usb,
1141 serial->in_endp->
1142 bEndpointAddress & 0x7F),
1143 urb->transfer_buffer, serial->rx_data_length,
1144 hso_std_serial_read_bulk_callback, serial);
1145 /* Give this to the USB subsystem so it can tell us when more data
1146 * arrives. */
1147 result = usb_submit_urb(urb, GFP_ATOMIC);
1148 if (result) {
1149 dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n",
1150 __func__, result);
1151 }
1152}
1153
1154
1155
1156
1157static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial)
1158{
1159 int count;
1160 struct urb *curr_urb;
1161
1162 while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) {
1163 curr_urb = serial->rx_urb[serial->curr_rx_urb_idx];
1164 count = put_rxbuf_data(curr_urb, serial);
1165 if (count == -1)
1166 return;
1167 if (count == 0) {
1168 serial->curr_rx_urb_idx++;
1169 if (serial->curr_rx_urb_idx >= serial->num_rx_urbs)
1170 serial->curr_rx_urb_idx = 0;
1171 hso_resubmit_rx_bulk_urb(serial, curr_urb);
1172 }
1173 }
1174}
1175
1176static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
1177{
1178 int count = 0;
1179 struct urb *urb;
1180
1181 urb = serial->rx_urb[0];
1182 if (serial->open_count > 0) {
1183 count = put_rxbuf_data(urb, serial);
1184 if (count == -1)
1185 return;
1186 }
1187 /* Re issue a read as long as we receive data. */
1188
1189 if (count == 0 && ((urb->actual_length != 0) ||
1190 (serial->rx_state == RX_PENDING))) {
1191 serial->rx_state = RX_SENT;
1192 hso_mux_serial_read(serial);
1193 } else
1194 serial->rx_state = RX_IDLE;
1195}
1196
1197
1198/* read callback for Diag and CS port */
1199static void hso_std_serial_read_bulk_callback(struct urb *urb)
1200{
1201 struct hso_serial *serial = urb->context;
1202 int status = urb->status;
1203
1204 /* sanity check */
1205 if (!serial) {
1206 D1("serial == NULL");
1207 return;
1208 } else if (status) {
1209 log_usb_status(status, __func__);
1210 return;
1211 }
1212
1213 D4("\n--- Got serial_read_bulk callback %02x ---", status);
1214 D1("Actual length = %d\n", urb->actual_length);
1215 DUMP1(urb->transfer_buffer, urb->actual_length);
1216
1217 /* Anyone listening? */
1218 if (serial->open_count == 0)
1219 return;
1220
1221 if (status == 0) {
1222 if (serial->parent->port_spec & HSO_INFO_CRC_BUG) {
1223 u32 rest;
1224 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1225 rest =
1226 urb->actual_length %
1227 serial->in_endp->wMaxPacketSize;
1228 if (((rest == 5) || (rest == 6))
1229 && !memcmp(((u8 *) urb->transfer_buffer) +
1230 urb->actual_length - 4, crc_check, 4)) {
1231 urb->actual_length -= 4;
1232 }
1233 }
1234 /* Valid data, handle RX data */
1235 spin_lock(&serial->serial_lock);
1236 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1;
1237 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1238 spin_unlock(&serial->serial_lock);
1239 } else if (status == -ENOENT || status == -ECONNRESET) {
1240 /* Unlinked - check for throttled port. */
1241 D2("Port %d, successfully unlinked urb", serial->minor);
1242 spin_lock(&serial->serial_lock);
1243 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
1244 hso_resubmit_rx_bulk_urb(serial, urb);
1245 spin_unlock(&serial->serial_lock);
1246 } else {
1247 D2("Port %d, status = %d for read urb", serial->minor, status);
1248 return;
1249 }
1250}
1251
1252/*
1253 * This needs to be a tasklet otherwise we will
1254 * end up recursively calling this function.
1255 */
0227abc9 1256static void hso_unthrottle_tasklet(struct hso_serial *serial)
8ef5ba63
DJB		 1257{
1258 unsigned long flags;
1259
1260 spin_lock_irqsave(&serial->serial_lock, flags);
1261 if ((serial->parent->port_spec & HSO_INTF_MUX))
1262 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
1263 else
1264 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1265 spin_unlock_irqrestore(&serial->serial_lock, flags);
1266}
1267
1268static void hso_unthrottle(struct tty_struct *tty)
1269{
1270 struct hso_serial *serial = get_serial_by_tty(tty);
1271
1272 tasklet_hi_schedule(&serial->unthrottle_tasklet);
1273}
1274
0227abc9 1275static void hso_unthrottle_workfunc(struct work_struct *work)
8ef5ba63
DJB		 1276{
1277 struct hso_serial *serial =
1278 container_of(work, struct hso_serial,
1279 retry_unthrottle_workqueue);
1280 hso_unthrottle_tasklet(serial);
1281}
1282
72dc1c09
GKH		 1283/* open the requested serial port */
1284static int hso_serial_open(struct tty_struct *tty, struct file *filp)
1285{
1286 struct hso_serial *serial = get_serial_by_index(tty->index);
ab153d84 1287 int result;
72dc1c09
GKH		 1288
1289 /* sanity check */
1290 if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) {
e136e303 1291 WARN_ON(1);
72dc1c09
GKH		 1292 tty->driver_data = NULL;
1293 D1("Failed to open port");
1294 return -ENODEV;
1295 }
1296
ab153d84 1297 mutex_lock(&serial->parent->mutex);
ab153d84
DM		 1298 result = usb_autopm_get_interface(serial->parent->interface);
1299 if (result < 0)
72dc1c09
GKH		 1300 goto err_out;
1301
1302 D1("Opening %d", serial->minor);
1303 kref_get(&serial->parent->ref);
1304
1305 /* setup */
e136e303 1306 spin_lock_irq(&serial->serial_lock);
72dc1c09 1307 tty->driver_data = serial;
fe41cbb1 1308 tty_kref_put(serial->tty);
e136e303
AC		 1309 serial->tty = tty_kref_get(tty);
1310 spin_unlock_irq(&serial->serial_lock);
72dc1c09 1311
2f9889a2
DM		 1312 /* check for port already opened, if not set the termios */
1313 serial->open_count++;
72dc1c09
GKH		 1314 if (serial->open_count == 1) {
1315 tty->low_latency = 1;
8ef5ba63 1316 serial->rx_state = RX_IDLE;
72dc1c09
GKH		 1317 /* Force default termio settings */
1318 _hso_serial_set_termios(tty, NULL);
8ef5ba63
DJB		 1319 tasklet_init(&serial->unthrottle_tasklet,
1320 (void (*)(unsigned long))hso_unthrottle_tasklet,
1321 (unsigned long)serial);
1322 INIT_WORK(&serial->retry_unthrottle_workqueue,
1323 hso_unthrottle_workfunc);
ab153d84
DM		 1324 result = hso_start_serial_device(serial->parent, GFP_KERNEL);
1325 if (result) {
72dc1c09
GKH		 1326 hso_stop_serial_device(serial->parent);
1327 serial->open_count--;
ab153d84 1328 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09
GKH		 1329 }
1330 } else {
1331 D1("Port was already open");
1332 }
1333
1334 usb_autopm_put_interface(serial->parent->interface);
1335
1336 /* done */
ab153d84 1337 if (result)
72dc1c09
GKH		 1338 hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0);
1339err_out:
ab153d84
DM		 1340 mutex_unlock(&serial->parent->mutex);
1341 return result;
72dc1c09
GKH		 1342}
1343
1344/* close the requested serial port */
1345static void hso_serial_close(struct tty_struct *tty, struct file *filp)
1346{
1347 struct hso_serial *serial = tty->driver_data;
1348 u8 usb_gone;
1349
1350 D1("Closing serial port");
1351
e136e303
AC		 1352 /* Open failed, no close cleanup required */
1353 if (serial == NULL)
1354 return;
1355
ab153d84 1356 mutex_lock(&serial->parent->mutex);
72dc1c09
GKH		 1357 usb_gone = serial->parent->usb_gone;
1358
1359 if (!usb_gone)
1360 usb_autopm_get_interface(serial->parent->interface);
1361
1362 /* reset the rts and dtr */
1363 /* do the actual close */
1364 serial->open_count--;
ab153d84 1365 kref_put(&serial->parent->ref, hso_serial_ref_free);
72dc1c09 1366 if (serial->open_count <= 0) {
72dc1c09 1367 serial->open_count = 0;
e136e303
AC		 1368 spin_lock_irq(&serial->serial_lock);
1369 if (serial->tty == tty) {
72dc1c09
GKH		 1370 serial->tty->driver_data = NULL;
1371 serial->tty = NULL;
e136e303 1372 tty_kref_put(tty);
72dc1c09 1373 }
e136e303 1374 spin_unlock_irq(&serial->serial_lock);
72dc1c09
GKH		 1375 if (!usb_gone)
1376 hso_stop_serial_device(serial->parent);
8ef5ba63
DJB		 1377 tasklet_kill(&serial->unthrottle_tasklet);
1378 cancel_work_sync(&serial->retry_unthrottle_workqueue);
72dc1c09 1379 }
8ef5ba63 1380
72dc1c09
GKH		 1381 if (!usb_gone)
1382 usb_autopm_put_interface(serial->parent->interface);
ab153d84
DM		 1383
1384 mutex_unlock(&serial->parent->mutex);
72dc1c09
GKH		 1385}
1386
1387/* close the requested serial port */
1388static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf,
1389 int count)
1390{
1391 struct hso_serial *serial = get_serial_by_tty(tty);
1392 int space, tx_bytes;
1393 unsigned long flags;
1394
1395 /* sanity check */
1396 if (serial == NULL) {
1397 printk(KERN_ERR "%s: serial is NULL\n", __func__);
1398 return -ENODEV;
1399 }
1400
1401 spin_lock_irqsave(&serial->serial_lock, flags);
1402
1403 space = serial->tx_data_length - serial->tx_buffer_count;
1404 tx_bytes = (count < space) ? count : space;
1405
1406 if (!tx_bytes)
1407 goto out;
1408
1409 memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes);
1410 serial->tx_buffer_count += tx_bytes;
1411
1412out:
1413 spin_unlock_irqrestore(&serial->serial_lock, flags);
1414
1415 hso_kick_transmit(serial);
1416 /* done */
1417 return tx_bytes;
1418}
1419
1420/* how much room is there for writing */
1421static int hso_serial_write_room(struct tty_struct *tty)
1422{
1423 struct hso_serial *serial = get_serial_by_tty(tty);
1424 int room;
1425 unsigned long flags;
1426
1427 spin_lock_irqsave(&serial->serial_lock, flags);
1428 room = serial->tx_data_length - serial->tx_buffer_count;
1429 spin_unlock_irqrestore(&serial->serial_lock, flags);
1430
1431 /* return free room */
1432 return room;
1433}
1434
1435/* setup the term */
1436static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
1437{
1438 struct hso_serial *serial = get_serial_by_tty(tty);
1439 unsigned long flags;
1440
1441 if (old)
1442 D5("Termios called with: cflags new[%d] - old[%d]",
1443 tty->termios->c_cflag, old->c_cflag);
1444
1445 /* the actual setup */
1446 spin_lock_irqsave(&serial->serial_lock, flags);
1447 if (serial->open_count)
1448 _hso_serial_set_termios(tty, old);
1449 else
1450 tty->termios = old;
1451 spin_unlock_irqrestore(&serial->serial_lock, flags);
1452
1453 /* done */
1454 return;
1455}
1456
1457/* how many characters in the buffer */
1458static int hso_serial_chars_in_buffer(struct tty_struct *tty)
1459{
1460 struct hso_serial *serial = get_serial_by_tty(tty);
1461 int chars;
1462 unsigned long flags;
1463
1464 /* sanity check */
1465 if (serial == NULL)
1466 return 0;
1467
1468 spin_lock_irqsave(&serial->serial_lock, flags);
1469 chars = serial->tx_buffer_count;
1470 spin_unlock_irqrestore(&serial->serial_lock, flags);
1471
1472 return chars;
1473}
0227abc9
HE		 1474static int tiocmget_submit_urb(struct hso_serial *serial,
1475 struct hso_tiocmget *tiocmget,
1476 struct usb_device *usb)
542f5482
DJB		 1477{
1478 int result;
1479
1480 if (serial->parent->usb_gone)
1481 return -ENODEV;
1482 usb_fill_int_urb(tiocmget->urb, usb,
1483 usb_rcvintpipe(usb,
1484 tiocmget->endp->
1485 bEndpointAddress & 0x7F),
1486 &tiocmget->serial_state_notification,
1487 sizeof(struct hso_serial_state_notification),
1488 tiocmget_intr_callback, serial,
1489 tiocmget->endp->bInterval);
1490 result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC);
1491 if (result) {
1492 dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__,
1493 result);
1494 }
1495 return result;
1496
1497}
1498
1499static void tiocmget_intr_callback(struct urb *urb)
1500{
1501 struct hso_serial *serial = urb->context;
1502 struct hso_tiocmget *tiocmget;
1503 int status = urb->status;
1504 u16 UART_state_bitmap, prev_UART_state_bitmap;
1505 struct uart_icount *icount;
1506 struct hso_serial_state_notification *serial_state_notification;
1507 struct usb_device *usb;
1508
1509 /* Sanity checks */
1510 if (!serial)
1511 return;
1512 if (status) {
1513 log_usb_status(status, __func__);
1514 return;
1515 }
1516 tiocmget = serial->tiocmget;
1517 if (!tiocmget)
1518 return;
1519 usb = serial->parent->usb;
1520 serial_state_notification = &tiocmget->serial_state_notification;
1521 if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE ||
1522 serial_state_notification->bNotification != B_NOTIFICATION ||
1523 le16_to_cpu(serial_state_notification->wValue) != W_VALUE ||
1524 le16_to_cpu(serial_state_notification->wIndex) != W_INDEX ||
1525 le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) {
1526 dev_warn(&usb->dev,
1527 "hso received invalid serial state notification\n");
1528 DUMP(serial_state_notification,
1529 sizeof(hso_serial_state_notifation))
1530 } else {
1531
1532 UART_state_bitmap = le16_to_cpu(serial_state_notification->
1533 UART_state_bitmap);
1534 prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap;
1535 icount = &tiocmget->icount;
1536 spin_lock(&serial->serial_lock);
1537 if ((UART_state_bitmap & B_OVERRUN) !=
1538 (prev_UART_state_bitmap & B_OVERRUN))
1539 icount->parity++;
1540 if ((UART_state_bitmap & B_PARITY) !=
1541 (prev_UART_state_bitmap & B_PARITY))
1542 icount->parity++;
1543 if ((UART_state_bitmap & B_FRAMING) !=
1544 (prev_UART_state_bitmap & B_FRAMING))
1545 icount->frame++;
1546 if ((UART_state_bitmap & B_RING_SIGNAL) &&
1547 !(prev_UART_state_bitmap & B_RING_SIGNAL))
1548 icount->rng++;
1549 if ((UART_state_bitmap & B_BREAK) !=
1550 (prev_UART_state_bitmap & B_BREAK))
1551 icount->brk++;
1552 if ((UART_state_bitmap & B_TX_CARRIER) !=
1553 (prev_UART_state_bitmap & B_TX_CARRIER))
1554 icount->dsr++;
1555 if ((UART_state_bitmap & B_RX_CARRIER) !=
1556 (prev_UART_state_bitmap & B_RX_CARRIER))
1557 icount->dcd++;
1558 tiocmget->prev_UART_state_bitmap = UART_state_bitmap;
1559 spin_unlock(&serial->serial_lock);
1560 tiocmget->intr_completed = 1;
1561 wake_up_interruptible(&tiocmget->waitq);
1562 }
1563 memset(serial_state_notification, 0,
1564 sizeof(struct hso_serial_state_notification));
1565 tiocmget_submit_urb(serial,
1566 tiocmget,
1567 serial->parent->usb);
1568}
1569
1570/*
1571 * next few functions largely stolen from drivers/serial/serial_core.c
1572 */
1573/* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1574 * - mask passed in arg for lines of interest
1575 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1576 * Caller should use TIOCGICOUNT to see which one it was
1577 */
1578static int
1579hso_wait_modem_status(struct hso_serial *serial, unsigned long arg)
1580{
1581 DECLARE_WAITQUEUE(wait, current);
1582 struct uart_icount cprev, cnow;
1583 struct hso_tiocmget *tiocmget;
1584 int ret;
1585
1586 tiocmget = serial->tiocmget;
1587 if (!tiocmget)
1588 return -ENOENT;
1589 /*
1590 * note the counters on entry
1591 */
1592 spin_lock_irq(&serial->serial_lock);
1593 memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount));
1594 spin_unlock_irq(&serial->serial_lock);
1595 add_wait_queue(&tiocmget->waitq, &wait);
1596 for (;;) {
1597 spin_lock_irq(&serial->serial_lock);
1598 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1599 spin_unlock_irq(&serial->serial_lock);
1600 set_current_state(TASK_INTERRUPTIBLE);
1601 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1602 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1603 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) {
1604 ret = 0;
1605 break;
1606 }
1607 schedule();
1608 /* see if a signal did it */
1609 if (signal_pending(current)) {
1610 ret = -ERESTARTSYS;
1611 break;
1612 }
1613 cprev = cnow;
1614 }
1615 current->state = TASK_RUNNING;
1616 remove_wait_queue(&tiocmget->waitq, &wait);
1617
1618 return ret;
1619}
1620
1621/*
1622 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
1623 * Return: write counters to the user passed counter struct
1624 * NB: both 1->0 and 0->1 transitions are counted except for
1625 * RI where only 0->1 is counted.
1626 */
1627static int hso_get_count(struct hso_serial *serial,
1628 struct serial_icounter_struct __user *icnt)
1629{
1630 struct serial_icounter_struct icount;
1631 struct uart_icount cnow;
1632 struct hso_tiocmget *tiocmget = serial->tiocmget;
1633
1634 if (!tiocmget)
1635 return -ENOENT;
1636 spin_lock_irq(&serial->serial_lock);
1637 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1638 spin_unlock_irq(&serial->serial_lock);
1639
1640 icount.cts = cnow.cts;
1641 icount.dsr = cnow.dsr;
1642 icount.rng = cnow.rng;
1643 icount.dcd = cnow.dcd;
1644 icount.rx = cnow.rx;
1645 icount.tx = cnow.tx;
1646 icount.frame = cnow.frame;
1647 icount.overrun = cnow.overrun;
1648 icount.parity = cnow.parity;
1649 icount.brk = cnow.brk;
1650 icount.buf_overrun = cnow.buf_overrun;
1651
1652 return copy_to_user(icnt, &icount, sizeof(icount)) ? -EFAULT : 0;
1653}
1654
72dc1c09
GKH		 1655
1656static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file)
1657{
542f5482 1658 int retval;
72dc1c09 1659 struct hso_serial *serial = get_serial_by_tty(tty);
542f5482
DJB		 1660 struct hso_tiocmget *tiocmget;
1661 u16 UART_state_bitmap;
72dc1c09
GKH		 1662
1663 /* sanity check */
1664 if (!serial) {
1665 D1("no tty structures");
1666 return -EINVAL;
1667 }
542f5482
DJB		 1668 spin_lock_irq(&serial->serial_lock);
1669 retval = ((serial->rts_state) ? TIOCM_RTS : 0) |
72dc1c09 1670 ((serial->dtr_state) ? TIOCM_DTR : 0);
542f5482
DJB		 1671 tiocmget = serial->tiocmget;
1672 if (tiocmget) {
1673
1674 UART_state_bitmap = le16_to_cpu(
1675 tiocmget->prev_UART_state_bitmap);
1676 if (UART_state_bitmap & B_RING_SIGNAL)
1677 retval |= TIOCM_RNG;
1678 if (UART_state_bitmap & B_RX_CARRIER)
1679 retval |= TIOCM_CD;
1680 if (UART_state_bitmap & B_TX_CARRIER)
1681 retval |= TIOCM_DSR;
1682 }
1683 spin_unlock_irq(&serial->serial_lock);
1684 return retval;
72dc1c09
GKH		 1685}
1686
1687static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
1688 unsigned int set, unsigned int clear)
1689{
1690 int val = 0;
1691 unsigned long flags;
1692 int if_num;
1693 struct hso_serial *serial = get_serial_by_tty(tty);
1694
1695 /* sanity check */
1696 if (!serial) {
1697 D1("no tty structures");
1698 return -EINVAL;
1699 }
1700 if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber;
1701
1702 spin_lock_irqsave(&serial->serial_lock, flags);
1703 if (set & TIOCM_RTS)
1704 serial->rts_state = 1;
1705 if (set & TIOCM_DTR)
1706 serial->dtr_state = 1;
1707
1708 if (clear & TIOCM_RTS)
1709 serial->rts_state = 0;
1710 if (clear & TIOCM_DTR)
1711 serial->dtr_state = 0;
1712
1713 if (serial->dtr_state)
1714 val |= 0x01;
1715 if (serial->rts_state)
1716 val |= 0x02;
1717
1718 spin_unlock_irqrestore(&serial->serial_lock, flags);
1719
1720 return usb_control_msg(serial->parent->usb,
1721 usb_rcvctrlpipe(serial->parent->usb, 0), 0x22,
1722 0x21, val, if_num, NULL, 0,
1723 USB_CTRL_SET_TIMEOUT);
1724}
1725
542f5482
DJB		 1726static int hso_serial_ioctl(struct tty_struct *tty, struct file *file,
1727 unsigned int cmd, unsigned long arg)
1728{
1729 struct hso_serial *serial = get_serial_by_tty(tty);
1730 void __user *uarg = (void __user *)arg;
1731 int ret = 0;
1732 D4("IOCTL cmd: %d, arg: %ld", cmd, arg);
1733
1734 if (!serial)
1735 return -ENODEV;
1736 switch (cmd) {
1737 case TIOCMIWAIT:
1738 ret = hso_wait_modem_status(serial, arg);
1739 break;
1740
1741 case TIOCGICOUNT:
1742 ret = hso_get_count(serial, uarg);
1743 break;
1744 default:
1745 ret = -ENOIOCTLCMD;
1746 break;
1747 }
1748 return ret;
1749}
1750
1751
72dc1c09
GKH		 1752/* starts a transmit */
1753static void hso_kick_transmit(struct hso_serial *serial)
1754{
1755 u8 *temp;
1756 unsigned long flags;
1757 int res;
1758
1759 spin_lock_irqsave(&serial->serial_lock, flags);
1760 if (!serial->tx_buffer_count)
1761 goto out;
1762
1763 if (serial->tx_urb_used)
1764 goto out;
1765
1766 /* Wakeup USB interface if necessary */
1767 if (hso_get_activity(serial->parent) == -EAGAIN)
1768 goto out;
1769
1770 /* Switch pointers around to avoid memcpy */
1771 temp = serial->tx_buffer;
1772 serial->tx_buffer = serial->tx_data;
1773 serial->tx_data = temp;
1774 serial->tx_data_count = serial->tx_buffer_count;
1775 serial->tx_buffer_count = 0;
1776
1777 /* If temp is set, it means we switched buffers */
1778 if (temp && serial->write_data) {
1779 res = serial->write_data(serial);
1780 if (res >= 0)
1781 serial->tx_urb_used = 1;
1782 }
1783out:
1784 spin_unlock_irqrestore(&serial->serial_lock, flags);
1785}
1786
1787/* make a request (for reading and writing data to muxed serial port) */
1788static int mux_device_request(struct hso_serial *serial, u8 type, u16 port,
1789 struct urb *ctrl_urb,
1790 struct usb_ctrlrequest *ctrl_req,
1791 u8 *ctrl_urb_data, u32 size)
1792{
1793 int result;
1794 int pipe;
1795
1796 /* Sanity check */
1797 if (!serial || !ctrl_urb || !ctrl_req) {
1798 printk(KERN_ERR "%s: Wrong arguments\n", __func__);
1799 return -EINVAL;
1800 }
1801
1802 /* initialize */
1803 ctrl_req->wValue = 0;
b74f62c1
DJB		 1804 ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port));
1805 ctrl_req->wLength = cpu_to_le16(size);
72dc1c09
GKH		 1806
1807 if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) {
1808 /* Reading command */
1809 ctrl_req->bRequestType = USB_DIR_IN |
1810 USB_TYPE_OPTION_VENDOR |
1811 USB_RECIP_INTERFACE;
1812 ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
1813 pipe = usb_rcvctrlpipe(serial->parent->usb, 0);
1814 } else {
1815 /* Writing command */
1816 ctrl_req->bRequestType = USB_DIR_OUT |
1817 USB_TYPE_OPTION_VENDOR |
1818 USB_RECIP_INTERFACE;
1819 ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND;
1820 pipe = usb_sndctrlpipe(serial->parent->usb, 0);
1821 }
1822 /* syslog */
1823 D2("%s command (%02x) len: %d, port: %d",
1824 type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write",
1825 ctrl_req->bRequestType, ctrl_req->wLength, port);
1826
1827 /* Load ctrl urb */
1828 ctrl_urb->transfer_flags = 0;
1829 usb_fill_control_urb(ctrl_urb,
1830 serial->parent->usb,
1831 pipe,
1832 (u8 *) ctrl_req,
1833 ctrl_urb_data, size, ctrl_callback, serial);
1834 /* Send it on merry way */
1835 result = usb_submit_urb(ctrl_urb, GFP_ATOMIC);
1836 if (result) {
1837 dev_err(&ctrl_urb->dev->dev,
1838 "%s failed submit ctrl_urb %d type %d", __func__,
1839 result, type);
1840 return result;
1841 }
1842
1843 /* done */
1844 return size;
1845}
1846
1847/* called by intr_callback when read occurs */
1848static int hso_mux_serial_read(struct hso_serial *serial)
1849{
1850 if (!serial)
1851 return -EINVAL;
1852
1853 /* clean data */
1854 memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE);
1855 /* make the request */
1856
1857 if (serial->num_rx_urbs != 1) {
1858 dev_err(&serial->parent->interface->dev,
1859 "ERROR: mux'd reads with multiple buffers "
1860 "not possible\n");
1861 return 0;
1862 }
1863 return mux_device_request(serial,
1864 USB_CDC_GET_ENCAPSULATED_RESPONSE,
1865 serial->parent->port_spec & HSO_PORT_MASK,
1866 serial->rx_urb[0],
1867 &serial->ctrl_req_rx,
1868 serial->rx_data[0], serial->rx_data_length);
1869}
1870
1871/* used for muxed serial port callback (muxed serial read) */
1872static void intr_callback(struct urb *urb)
1873{
1874 struct hso_shared_int *shared_int = urb->context;
1875 struct hso_serial *serial;
1876 unsigned char *port_req;
1877 int status = urb->status;
1878 int i;
1879
1880 usb_mark_last_busy(urb->dev);
1881
1882 /* sanity check */
1883 if (!shared_int)
1884 return;
1885
1886 /* status check */
1887 if (status) {
1888 log_usb_status(status, __func__);
1889 return;
1890 }
1891 D4("\n--- Got intr callback 0x%02X ---", status);
1892
1893 /* what request? */
1894 port_req = urb->transfer_buffer;
1895 D4(" port_req = 0x%.2X\n", *port_req);
1896 /* loop over all muxed ports to find the one sending this */
1897 for (i = 0; i < 8; i++) {
1898 /* max 8 channels on MUX */
1899 if (*port_req & (1 << i)) {
1900 serial = get_serial_by_shared_int_and_type(shared_int,
1901 (1 << i));
1902 if (serial != NULL) {
1903 D1("Pending read interrupt on port %d\n", i);
8ef5ba63
DJB		 1904 spin_lock(&serial->serial_lock);
1905 if (serial->rx_state == RX_IDLE) {
72dc1c09
GKH		 1906 /* Setup and send a ctrl req read on
1907 * port i */
8ef5ba63
DJB		 1908 if (!serial->rx_urb_filled[0]) {
1909 serial->rx_state = RX_SENT;
1910 hso_mux_serial_read(serial);
1911 } else
1912 serial->rx_state = RX_PENDING;
1913
72dc1c09
GKH		 1914 } else {
1915 D1("Already pending a read on "
1916 "port %d\n", i);
1917 }
8ef5ba63 1918 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 1919 }
1920 }
1921 }
1922 /* Resubmit interrupt urb */
1923 hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC);
1924}
1925
1926/* called for writing to muxed serial port */
1927static int hso_mux_serial_write_data(struct hso_serial *serial)
1928{
1929 if (NULL == serial)
1930 return -EINVAL;
1931
1932 return mux_device_request(serial,
1933 USB_CDC_SEND_ENCAPSULATED_COMMAND,
1934 serial->parent->port_spec & HSO_PORT_MASK,
1935 serial->tx_urb,
1936 &serial->ctrl_req_tx,
1937 serial->tx_data, serial->tx_data_count);
1938}
1939
1940/* write callback for Diag and CS port */
1941static void hso_std_serial_write_bulk_callback(struct urb *urb)
1942{
1943 struct hso_serial *serial = urb->context;
1944 int status = urb->status;
e136e303 1945 struct tty_struct *tty;
72dc1c09
GKH		 1946
1947 /* sanity check */
1948 if (!serial) {
1949 D1("serial == NULL");
1950 return;
1951 }
1952
1953 spin_lock(&serial->serial_lock);
1954 serial->tx_urb_used = 0;
e136e303 1955 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 1956 spin_unlock(&serial->serial_lock);
1957 if (status) {
1958 log_usb_status(status, __func__);
e136e303 1959 tty_kref_put(tty);
72dc1c09
GKH		 1960 return;
1961 }
1962 hso_put_activity(serial->parent);
e136e303
AC		 1963 if (tty) {
1964 tty_wakeup(tty);
1965 tty_kref_put(tty);
1966 }
72dc1c09
GKH		 1967 hso_kick_transmit(serial);
1968
1969 D1(" ");
1970 return;
1971}
1972
1973/* called for writing diag or CS serial port */
1974static int hso_std_serial_write_data(struct hso_serial *serial)
1975{
1976 int count = serial->tx_data_count;
1977 int result;
1978
1979 usb_fill_bulk_urb(serial->tx_urb,
1980 serial->parent->usb,
1981 usb_sndbulkpipe(serial->parent->usb,
1982 serial->out_endp->
1983 bEndpointAddress & 0x7F),
1984 serial->tx_data, serial->tx_data_count,
1985 hso_std_serial_write_bulk_callback, serial);
1986
1987 result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC);
1988 if (result) {
1989 dev_warn(&serial->parent->usb->dev,
1990 "Failed to submit urb - res %d\n", result);
1991 return result;
1992 }
1993
1994 return count;
1995}
1996
1997/* callback after read or write on muxed serial port */
1998static void ctrl_callback(struct urb *urb)
1999{
2000 struct hso_serial *serial = urb->context;
2001 struct usb_ctrlrequest *req;
2002 int status = urb->status;
e136e303 2003 struct tty_struct *tty;
72dc1c09
GKH		 2004
2005 /* sanity check */
2006 if (!serial)
2007 return;
2008
2009 spin_lock(&serial->serial_lock);
2010 serial->tx_urb_used = 0;
e136e303 2011 tty = tty_kref_get(serial->tty);
72dc1c09
GKH		 2012 spin_unlock(&serial->serial_lock);
2013 if (status) {
2014 log_usb_status(status, __func__);
e136e303 2015 tty_kref_put(tty);
72dc1c09
GKH		 2016 return;
2017 }
2018
2019 /* what request? */
2020 req = (struct usb_ctrlrequest *)(urb->setup_packet);
2021 D4("\n--- Got muxed ctrl callback 0x%02X ---", status);
2022 D4("Actual length of urb = %d\n", urb->actual_length);
2023 DUMP1(urb->transfer_buffer, urb->actual_length);
2024
2025 if (req->bRequestType ==
2026 (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) {
2027 /* response to a read command */
8ef5ba63
DJB		 2028 serial->rx_urb_filled[0] = 1;
2029 spin_lock(&serial->serial_lock);
2030 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
2031 spin_unlock(&serial->serial_lock);
72dc1c09
GKH		 2032 } else {
2033 hso_put_activity(serial->parent);
e136e303
AC		 2034 if (tty)
2035 tty_wakeup(tty);
72dc1c09
GKH		 2036 /* response to a write command */
2037 hso_kick_transmit(serial);
2038 }
e136e303 2039 tty_kref_put(tty);
72dc1c09
GKH		 2040}
2041
2042/* handle RX data for serial port */
8ef5ba63 2043static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
72dc1c09 2044{
e136e303 2045 struct tty_struct *tty;
8ef5ba63
DJB		 2046 int write_length_remaining = 0;
2047 int curr_write_len;
e136e303 2048
72dc1c09
GKH		 2049 /* Sanity check */
2050 if (urb == NULL || serial == NULL) {
2051 D1("serial = NULL");
8ef5ba63 2052 return -2;
72dc1c09
GKH		 2053 }
2054
d45eb81c 2055 /* All callers to put_rxbuf_data hold serial_lock */
e136e303 2056 tty = tty_kref_get(serial->tty);
e136e303 2057
72dc1c09 2058 /* Push data to tty */
8ef5ba63
DJB		 2059 if (tty) {
2060 write_length_remaining = urb->actual_length -
2061 serial->curr_rx_urb_offset;
72dc1c09 2062 D1("data to push to tty");
8ef5ba63 2063 while (write_length_remaining) {
5839b414
DJB		 2064 if (test_bit(TTY_THROTTLED, &tty->flags)) {
2065 tty_kref_put(tty);
8ef5ba63 2066 return -1;
5839b414 2067 }
8ef5ba63
DJB		 2068 curr_write_len = tty_insert_flip_string
2069 (tty, urb->transfer_buffer +
2070 serial->curr_rx_urb_offset,
2071 write_length_remaining);
2072 serial->curr_rx_urb_offset += curr_write_len;
2073 write_length_remaining -= curr_write_len;
2074 tty_flip_buffer_push(tty);
72dc1c09 2075 }
72dc1c09 2076 }
8ef5ba63
DJB		 2077 if (write_length_remaining == 0) {
2078 serial->curr_rx_urb_offset = 0;
2079 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
72dc1c09 2080 }
e136e303 2081 tty_kref_put(tty);
8ef5ba63 2082 return write_length_remaining;
72dc1c09
GKH		 2083}
2084
8ef5ba63 2085
72dc1c09
GKH		 2086/* Base driver functions */
2087
2088static void hso_log_port(struct hso_device *hso_dev)
2089{
2090 char *port_type;
2091 char port_dev[20];
2092
2093 switch (hso_dev->port_spec & HSO_PORT_MASK) {
2094 case HSO_PORT_CONTROL:
2095 port_type = "Control";
2096 break;
2097 case HSO_PORT_APP:
2098 port_type = "Application";
2099 break;
2100 case HSO_PORT_GPS:
2101 port_type = "GPS";
2102 break;
2103 case HSO_PORT_GPS_CONTROL:
2104 port_type = "GPS control";
2105 break;
2106 case HSO_PORT_APP2:
2107 port_type = "Application2";
2108 break;
2109 case HSO_PORT_PCSC:
2110 port_type = "PCSC";
2111 break;
2112 case HSO_PORT_DIAG:
2113 port_type = "Diagnostic";
2114 break;
2115 case HSO_PORT_DIAG2:
2116 port_type = "Diagnostic2";
2117 break;
2118 case HSO_PORT_MODEM:
2119 port_type = "Modem";
2120 break;
2121 case HSO_PORT_NETWORK:
2122 port_type = "Network";
2123 break;
2124 default:
2125 port_type = "Unknown";
2126 break;
2127 }
2128 if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2129 sprintf(port_dev, "%s", dev2net(hso_dev)->net->name);
2130 } else
2131 sprintf(port_dev, "/dev/%s%d", tty_filename,
2132 dev2ser(hso_dev)->minor);
2133
2134 dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n",
2135 port_type, port_dev);
2136}
2137
2138static int hso_start_net_device(struct hso_device *hso_dev)
2139{
2140 int i, result = 0;
2141 struct hso_net *hso_net = dev2net(hso_dev);
2142
2143 if (!hso_net)
2144 return -ENODEV;
2145
2146 /* send URBs for all read buffers */
2147 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2148
2149 /* Prep a receive URB */
2150 usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i],
2151 hso_dev->usb,
2152 usb_rcvbulkpipe(hso_dev->usb,
2153 hso_net->in_endp->
2154 bEndpointAddress & 0x7F),
2155 hso_net->mux_bulk_rx_buf_pool[i],
2156 MUX_BULK_RX_BUF_SIZE, read_bulk_callback,
2157 hso_net);
2158
2159 /* Put it out there so the device can send us stuff */
2160 result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i],
2161 GFP_NOIO);
2162 if (result)
2163 dev_warn(&hso_dev->usb->dev,
2164 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__,
2165 i, result);
2166 }
2167
2168 return result;
2169}
2170
2171static int hso_stop_net_device(struct hso_device *hso_dev)
2172{
2173 int i;
2174 struct hso_net *hso_net = dev2net(hso_dev);
2175
2176 if (!hso_net)
2177 return -ENODEV;
2178
2179 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2180 if (hso_net->mux_bulk_rx_urb_pool[i])
2181 usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2182
2183 }
2184 if (hso_net->mux_bulk_tx_urb)
2185 usb_kill_urb(hso_net->mux_bulk_tx_urb);
2186
2187 return 0;
2188}
2189
2190static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags)
2191{
2192 int i, result = 0;
2193 struct hso_serial *serial = dev2ser(hso_dev);
2194
2195 if (!serial)
2196 return -ENODEV;
2197
2198 /* If it is not the MUX port fill in and submit a bulk urb (already
2199 * allocated in hso_serial_start) */
2200 if (!(serial->parent->port_spec & HSO_INTF_MUX)) {
2201 for (i = 0; i < serial->num_rx_urbs; i++) {
2202 usb_fill_bulk_urb(serial->rx_urb[i],
2203 serial->parent->usb,
2204 usb_rcvbulkpipe(serial->parent->usb,
2205 serial->in_endp->
2206 bEndpointAddress &
2207 0x7F),
2208 serial->rx_data[i],
2209 serial->rx_data_length,
2210 hso_std_serial_read_bulk_callback,
2211 serial);
2212 result = usb_submit_urb(serial->rx_urb[i], flags);
2213 if (result) {
2214 dev_warn(&serial->parent->usb->dev,
2215 "Failed to submit urb - res %d\n",
2216 result);
2217 break;
2218 }
2219 }
2220 } else {
2221 mutex_lock(&serial->shared_int->shared_int_lock);
2222 if (!serial->shared_int->use_count) {
2223 result =
2224 hso_mux_submit_intr_urb(serial->shared_int,
2225 hso_dev->usb, flags);
2226 }
2227 serial->shared_int->use_count++;
2228 mutex_unlock(&serial->shared_int->shared_int_lock);
2229 }
542f5482
DJB		 2230 if (serial->tiocmget)
2231 tiocmget_submit_urb(serial,
2232 serial->tiocmget,
2233 serial->parent->usb);
72dc1c09
GKH		 2234 return result;
2235}
2236
2237static int hso_stop_serial_device(struct hso_device *hso_dev)
2238{
2239 int i;
2240 struct hso_serial *serial = dev2ser(hso_dev);
542f5482 2241 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2242
2243 if (!serial)
2244 return -ENODEV;
2245
2246 for (i = 0; i < serial->num_rx_urbs; i++) {
8ef5ba63 2247 if (serial->rx_urb[i]) {
72dc1c09 2248 usb_kill_urb(serial->rx_urb[i]);
8ef5ba63
DJB		 2249 serial->rx_urb_filled[i] = 0;
2250 }
72dc1c09 2251 }
8ef5ba63
DJB		 2252 serial->curr_rx_urb_idx = 0;
2253 serial->curr_rx_urb_offset = 0;
72dc1c09
GKH		 2254
2255 if (serial->tx_urb)
2256 usb_kill_urb(serial->tx_urb);
2257
2258 if (serial->shared_int) {
2259 mutex_lock(&serial->shared_int->shared_int_lock);
2260 if (serial->shared_int->use_count &&
2261 (--serial->shared_int->use_count == 0)) {
2262 struct urb *urb;
2263
2264 urb = serial->shared_int->shared_intr_urb;
2265 if (urb)
2266 usb_kill_urb(urb);
2267 }
2268 mutex_unlock(&serial->shared_int->shared_int_lock);
2269 }
542f5482
DJB		 2270 tiocmget = serial->tiocmget;
2271 if (tiocmget) {
2272 wake_up_interruptible(&tiocmget->waitq);
2273 usb_kill_urb(tiocmget->urb);
2274 }
72dc1c09
GKH		 2275
2276 return 0;
2277}
2278
2279static void hso_serial_common_free(struct hso_serial *serial)
2280{
2281 int i;
2282
2283 if (serial->parent->dev)
2284 device_remove_file(serial->parent->dev, &dev_attr_hsotype);
2285
2286 tty_unregister_device(tty_drv, serial->minor);
2287
2288 for (i = 0; i < serial->num_rx_urbs; i++) {
2289 /* unlink and free RX URB */
2290 usb_free_urb(serial->rx_urb[i]);
2291 /* free the RX buffer */
2292 kfree(serial->rx_data[i]);
2293 }
2294
2295 /* unlink and free TX URB */
2296 usb_free_urb(serial->tx_urb);
2297 kfree(serial->tx_data);
2298}
2299
2300static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
2301 int rx_size, int tx_size)
2302{
2303 struct device *dev;
2304 int minor;
2305 int i;
2306
2307 minor = get_free_serial_index();
2308 if (minor < 0)
2309 goto exit;
2310
2311 /* register our minor number */
2312 serial->parent->dev = tty_register_device(tty_drv, minor,
2313 &serial->parent->interface->dev);
2314 dev = serial->parent->dev;
2315 dev->driver_data = serial->parent;
2316 i = device_create_file(dev, &dev_attr_hsotype);
2317
2318 /* fill in specific data for later use */
2319 serial->minor = minor;
2320 serial->magic = HSO_SERIAL_MAGIC;
2321 spin_lock_init(&serial->serial_lock);
2322 serial->num_rx_urbs = num_urbs;
2323
2324 /* RX, allocate urb and initialize */
2325
2326 /* prepare our RX buffer */
2327 serial->rx_data_length = rx_size;
2328 for (i = 0; i < serial->num_rx_urbs; i++) {
2329 serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
2330 if (!serial->rx_urb[i]) {
2331 dev_err(dev, "Could not allocate urb?\n");
2332 goto exit;
2333 }
2334 serial->rx_urb[i]->transfer_buffer = NULL;
2335 serial->rx_urb[i]->transfer_buffer_length = 0;
2336 serial->rx_data[i] = kzalloc(serial->rx_data_length,
2337 GFP_KERNEL);
2338 if (!serial->rx_data[i]) {
2339 dev_err(dev, "%s - Out of memory\n", __func__);
2340 goto exit;
2341 }
2342 }
2343
2344 /* TX, allocate urb and initialize */
2345 serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2346 if (!serial->tx_urb) {
2347 dev_err(dev, "Could not allocate urb?\n");
2348 goto exit;
2349 }
2350 serial->tx_urb->transfer_buffer = NULL;
2351 serial->tx_urb->transfer_buffer_length = 0;
2352 /* prepare our TX buffer */
2353 serial->tx_data_count = 0;
2354 serial->tx_buffer_count = 0;
2355 serial->tx_data_length = tx_size;
2356 serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL);
2357 if (!serial->tx_data) {
2358 dev_err(dev, "%s - Out of memory", __func__);
2359 goto exit;
2360 }
2361 serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL);
2362 if (!serial->tx_buffer) {
2363 dev_err(dev, "%s - Out of memory", __func__);
2364 goto exit;
2365 }
2366
2367 return 0;
2368exit:
2369 hso_serial_common_free(serial);
2370 return -1;
2371}
2372
72dc1c09
GKH		 2373/* Creates a general hso device */
2374static struct hso_device *hso_create_device(struct usb_interface *intf,
2375 int port_spec)
2376{
2377 struct hso_device *hso_dev;
2378
2379 hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC);
2380 if (!hso_dev)
2381 return NULL;
2382
2383 hso_dev->port_spec = port_spec;
2384 hso_dev->usb = interface_to_usbdev(intf);
2385 hso_dev->interface = intf;
2386 kref_init(&hso_dev->ref);
ab153d84
DM		 2387 mutex_init(&hso_dev->mutex);
2388
72dc1c09
GKH		 2389 INIT_WORK(&hso_dev->async_get_intf, async_get_intf);
2390 INIT_WORK(&hso_dev->async_put_intf, async_put_intf);
2391
2392 return hso_dev;
2393}
2394
2395/* Removes a network device in the network device table */
2396static int remove_net_device(struct hso_device *hso_dev)
2397{
2398 int i;
2399
2400 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2401 if (network_table[i] == hso_dev) {
2402 network_table[i] = NULL;
2403 break;
2404 }
2405 }
2406 if (i == HSO_MAX_NET_DEVICES)
2407 return -1;
2408 return 0;
2409}
2410
2411/* Frees our network device */
2412static void hso_free_net_device(struct hso_device *hso_dev)
2413{
2414 int i;
2415 struct hso_net *hso_net = dev2net(hso_dev);
2416
2417 if (!hso_net)
2418 return;
2419
2420 /* start freeing */
2421 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2422 usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2423 kfree(hso_net->mux_bulk_rx_buf_pool[i]);
2424 }
2425 usb_free_urb(hso_net->mux_bulk_tx_urb);
2426 kfree(hso_net->mux_bulk_tx_buf);
2427
2428 remove_net_device(hso_net->parent);
2429
2430 if (hso_net->net) {
2431 unregister_netdev(hso_net->net);
2432 free_netdev(hso_net->net);
2433 }
ab153d84 2434
e44578ea 2435 kfree(hso_dev);
72dc1c09
GKH		 2436}
2437
c266cb4e
SH		 2438static const struct net_device_ops hso_netdev_ops = {
2439 .ndo_open = hso_net_open,
2440 .ndo_stop = hso_net_close,
2441 .ndo_start_xmit = hso_net_start_xmit,
2442 .ndo_tx_timeout = hso_net_tx_timeout,
2443};
2444
72dc1c09
GKH		 2445/* initialize the network interface */
2446static void hso_net_init(struct net_device *net)
2447{
2448 struct hso_net *hso_net = netdev_priv(net);
2449
2450 D1("sizeof hso_net is %d", (int)sizeof(*hso_net));
2451
2452 /* fill in the other fields */
c266cb4e 2453 net->netdev_ops = &hso_netdev_ops;
72dc1c09
GKH		 2454 net->watchdog_timeo = HSO_NET_TX_TIMEOUT;
2455 net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
2456 net->type = ARPHRD_NONE;
2457 net->mtu = DEFAULT_MTU - 14;
2458 net->tx_queue_len = 10;
2459 SET_ETHTOOL_OPS(net, &ops);
2460
2461 /* and initialize the semaphore */
2462 spin_lock_init(&hso_net->net_lock);
2463}
2464
2465/* Adds a network device in the network device table */
2466static int add_net_device(struct hso_device *hso_dev)
2467{
2468 int i;
2469
2470 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2471 if (network_table[i] == NULL) {
2472 network_table[i] = hso_dev;
2473 break;
2474 }
2475 }
2476 if (i == HSO_MAX_NET_DEVICES)
2477 return -1;
2478 return 0;
2479}
2480
2481static int hso_radio_toggle(void *data, enum rfkill_state state)
2482{
2483 struct hso_device *hso_dev = data;
2484 int enabled = (state == RFKILL_STATE_ON);
2485 int rv;
2486
ab153d84 2487 mutex_lock(&hso_dev->mutex);
72dc1c09
GKH		 2488 if (hso_dev->usb_gone)
2489 rv = 0;
2490 else
2491 rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0),
2492 enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
2493 USB_CTRL_SET_TIMEOUT);
ab153d84 2494 mutex_unlock(&hso_dev->mutex);
72dc1c09
GKH		 2495 return rv;
2496}
2497
2498/* Creates and sets up everything for rfkill */
2499static void hso_create_rfkill(struct hso_device *hso_dev,
2500 struct usb_interface *interface)
2501{
2502 struct hso_net *hso_net = dev2net(hso_dev);
939a9516 2503 struct device *dev = &hso_net->net->dev;
72dc1c09
GKH		 2504 char *rfkn;
2505
2506 hso_net->rfkill = rfkill_allocate(&interface_to_usbdev(interface)->dev,
db053c6b 2507 RFKILL_TYPE_WWAN);
72dc1c09 2508 if (!hso_net->rfkill) {
939a9516 2509 dev_err(dev, "%s - Out of memory\n", __func__);
72dc1c09
GKH		 2510 return;
2511 }
2512 rfkn = kzalloc(20, GFP_KERNEL);
2513 if (!rfkn) {
2514 rfkill_free(hso_net->rfkill);
939a9516
JM		 2515 hso_net->rfkill = NULL;
2516 dev_err(dev, "%s - Out of memory\n", __func__);
72dc1c09
GKH		 2517 return;
2518 }
2519 snprintf(rfkn, 20, "hso-%d",
2520 interface->altsetting->desc.bInterfaceNumber);
2521 hso_net->rfkill->name = rfkn;
2522 hso_net->rfkill->state = RFKILL_STATE_ON;
2523 hso_net->rfkill->data = hso_dev;
2524 hso_net->rfkill->toggle_radio = hso_radio_toggle;
2525 if (rfkill_register(hso_net->rfkill) < 0) {
2526 kfree(rfkn);
2527 hso_net->rfkill->name = NULL;
2528 rfkill_free(hso_net->rfkill);
939a9516
JM		 2529 hso_net->rfkill = NULL;
2530 dev_err(dev, "%s - Failed to register rfkill\n", __func__);
72dc1c09
GKH		 2531 return;
2532 }
2533}
2534
2535/* Creates our network device */
2536static struct hso_device *hso_create_net_device(struct usb_interface *interface)
2537{
2538 int result, i;
2539 struct net_device *net;
2540 struct hso_net *hso_net;
2541 struct hso_device *hso_dev;
2542
2543 hso_dev = hso_create_device(interface, HSO_INTF_MUX | HSO_PORT_NETWORK);
2544 if (!hso_dev)
2545 return NULL;
2546
2547 /* allocate our network device, then we can put in our private data */
2548 /* call hso_net_init to do the basic initialization */
2549 net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init);
2550 if (!net) {
2551 dev_err(&interface->dev, "Unable to create ethernet device\n");
2552 goto exit;
2553 }
2554
2555 hso_net = netdev_priv(net);
2556
2557 hso_dev->port_data.dev_net = hso_net;
2558 hso_net->net = net;
2559 hso_net->parent = hso_dev;
2560
2561 hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2562 USB_DIR_IN);
2563 if (!hso_net->in_endp) {
2564 dev_err(&interface->dev, "Can't find BULK IN endpoint\n");
2565 goto exit;
2566 }
2567 hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2568 USB_DIR_OUT);
2569 if (!hso_net->out_endp) {
2570 dev_err(&interface->dev, "Can't find BULK OUT endpoint\n");
2571 goto exit;
2572 }
2573 SET_NETDEV_DEV(net, &interface->dev);
2574
2575 /* registering our net device */
2576 result = register_netdev(net);
2577 if (result) {
2578 dev_err(&interface->dev, "Failed to register device\n");
2579 goto exit;
2580 }
2581
2582 /* start allocating */
2583 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2584 hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL);
2585 if (!hso_net->mux_bulk_rx_urb_pool[i]) {
2586 dev_err(&interface->dev, "Could not allocate rx urb\n");
2587 goto exit;
2588 }
2589 hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE,
2590 GFP_KERNEL);
2591 if (!hso_net->mux_bulk_rx_buf_pool[i]) {
2592 dev_err(&interface->dev, "Could not allocate rx buf\n");
2593 goto exit;
2594 }
2595 }
2596 hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2597 if (!hso_net->mux_bulk_tx_urb) {
2598 dev_err(&interface->dev, "Could not allocate tx urb\n");
2599 goto exit;
2600 }
2601 hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL);
2602 if (!hso_net->mux_bulk_tx_buf) {
2603 dev_err(&interface->dev, "Could not allocate tx buf\n");
2604 goto exit;
2605 }
2606
2607 add_net_device(hso_dev);
2608
2609 hso_log_port(hso_dev);
2610
2611 hso_create_rfkill(hso_dev, interface);
2612
2613 return hso_dev;
2614exit:
2615 hso_free_net_device(hso_dev);
2616 return NULL;
2617}
2618
542f5482
DJB		 2619static void hso_free_tiomget(struct hso_serial *serial)
2620{
2621 struct hso_tiocmget *tiocmget = serial->tiocmget;
2622 if (tiocmget) {
2623 kfree(tiocmget);
2624 if (tiocmget->urb) {
2625 usb_free_urb(tiocmget->urb);
2626 tiocmget->urb = NULL;
2627 }
2628 serial->tiocmget = NULL;
2629
2630 }
2631}
2632
72dc1c09
GKH		 2633/* Frees an AT channel ( goes for both mux and non-mux ) */
2634static void hso_free_serial_device(struct hso_device *hso_dev)
2635{
2636 struct hso_serial *serial = dev2ser(hso_dev);
2637
2638 if (!serial)
2639 return;
2640 set_serial_by_index(serial->minor, NULL);
2641
2642 hso_serial_common_free(serial);
2643
2644 if (serial->shared_int) {
2645 mutex_lock(&serial->shared_int->shared_int_lock);
2646 if (--serial->shared_int->ref_count == 0)
2647 hso_free_shared_int(serial->shared_int);
2648 else
2649 mutex_unlock(&serial->shared_int->shared_int_lock);
2650 }
542f5482 2651 hso_free_tiomget(serial);
72dc1c09 2652 kfree(serial);
e44578ea 2653 kfree(hso_dev);
72dc1c09
GKH		 2654}
2655
2656/* Creates a bulk AT channel */
2657static struct hso_device *hso_create_bulk_serial_device(
2658 struct usb_interface *interface, int port)
2659{
2660 struct hso_device *hso_dev;
2661 struct hso_serial *serial;
2662 int num_urbs;
542f5482 2663 struct hso_tiocmget *tiocmget;
72dc1c09
GKH		 2664
2665 hso_dev = hso_create_device(interface, port);
2666 if (!hso_dev)
2667 return NULL;
2668
2669 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2670 if (!serial)
2671 goto exit;
2672
2673 serial->parent = hso_dev;
2674 hso_dev->port_data.dev_serial = serial;
2675
58eb17f1 2676 if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
72dc1c09 2677 num_urbs = 2;
542f5482
DJB		 2678 serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
2679 GFP_KERNEL);
2680 /* it isn't going to break our heart if serial->tiocmget
2681 * allocation fails don't bother checking this.
2682 */
2683 if (serial->tiocmget) {
2684 tiocmget = serial->tiocmget;
2685 tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
2686 if (tiocmget->urb) {
2687 mutex_init(&tiocmget->mutex);
2688 init_waitqueue_head(&tiocmget->waitq);
2689 tiocmget->endp = hso_get_ep(
2690 interface,
2691 USB_ENDPOINT_XFER_INT,
2692 USB_DIR_IN);
2693 } else
2694 hso_free_tiomget(serial);
2695 }
2696 }
72dc1c09
GKH		 2697 else
2698 num_urbs = 1;
2699
2700 if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE,
2701 BULK_URB_TX_SIZE))
2702 goto exit;
2703
2704 serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2705 USB_DIR_IN);
2706 if (!serial->in_endp) {
2707 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2708 goto exit2;
72dc1c09
GKH		 2709 }
2710
2711 if (!
2712 (serial->out_endp =
2713 hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) {
2714 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
e57b641d 2715 goto exit2;
72dc1c09
GKH		 2716 }
2717
2718 serial->write_data = hso_std_serial_write_data;
2719
2720 /* and record this serial */
2721 set_serial_by_index(serial->minor, serial);
2722
2723 /* setup the proc dirs and files if needed */
2724 hso_log_port(hso_dev);
2725
2726 /* done, return it */
2727 return hso_dev;
e57b641d
AB		 2728
2729exit2:
2730 hso_serial_common_free(serial);
72dc1c09 2731exit:
542f5482 2732 hso_free_tiomget(serial);
72dc1c09 2733 kfree(serial);
e44578ea 2734 kfree(hso_dev);
72dc1c09
GKH		 2735 return NULL;
2736}
2737
2738/* Creates a multiplexed AT channel */
2739static
2740struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
2741 int port,
2742 struct hso_shared_int *mux)
2743{
2744 struct hso_device *hso_dev;
2745 struct hso_serial *serial;
2746 int port_spec;
2747
2748 port_spec = HSO_INTF_MUX;
2749 port_spec &= ~HSO_PORT_MASK;
2750
2751 port_spec |= hso_mux_to_port(port);
2752 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT)
2753 return NULL;
2754
2755 hso_dev = hso_create_device(interface, port_spec);
2756 if (!hso_dev)
2757 return NULL;
2758
2759 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2760 if (!serial)
2761 goto exit;
2762
2763 hso_dev->port_data.dev_serial = serial;
2764 serial->parent = hso_dev;
2765
2766 if (hso_serial_common_create
2767 (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE))
2768 goto exit;
2769
2770 serial->tx_data_length--;
2771 serial->write_data = hso_mux_serial_write_data;
2772
2773 serial->shared_int = mux;
2774 mutex_lock(&serial->shared_int->shared_int_lock);
2775 serial->shared_int->ref_count++;
2776 mutex_unlock(&serial->shared_int->shared_int_lock);
2777
2778 /* and record this serial */
2779 set_serial_by_index(serial->minor, serial);
2780
2781 /* setup the proc dirs and files if needed */
2782 hso_log_port(hso_dev);
2783
2784 /* done, return it */
2785 return hso_dev;
2786
2787exit:
2788 if (serial) {
2789 tty_unregister_device(tty_drv, serial->minor);
2790 kfree(serial);
2791 }
2792 if (hso_dev)
e44578ea 2793 kfree(hso_dev);
72dc1c09
GKH		 2794 return NULL;
2795
2796}
2797
2798static void hso_free_shared_int(struct hso_shared_int *mux)
2799{
2800 usb_free_urb(mux->shared_intr_urb);
2801 kfree(mux->shared_intr_buf);
2802 mutex_unlock(&mux->shared_int_lock);
2803 kfree(mux);
2804}
2805
2806static
2807struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface)
2808{
2809 struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL);
2810
2811 if (!mux)
2812 return NULL;
2813
2814 mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT,
2815 USB_DIR_IN);
2816 if (!mux->intr_endp) {
2817 dev_err(&interface->dev, "Can't find INT IN endpoint\n");
2818 goto exit;
2819 }
2820
2821 mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL);
2822 if (!mux->shared_intr_urb) {
2823 dev_err(&interface->dev, "Could not allocate intr urb?");
2824 goto exit;
2825 }
2826 mux->shared_intr_buf = kzalloc(mux->intr_endp->wMaxPacketSize,
2827 GFP_KERNEL);
2828 if (!mux->shared_intr_buf) {
2829 dev_err(&interface->dev, "Could not allocate intr buf?");
2830 goto exit;
2831 }
2832
2833 mutex_init(&mux->shared_int_lock);
2834
2835 return mux;
2836
2837exit:
2838 kfree(mux->shared_intr_buf);
2839 usb_free_urb(mux->shared_intr_urb);
2840 kfree(mux);
2841 return NULL;
2842}
2843
2844/* Gets the port spec for a certain interface */
2845static int hso_get_config_data(struct usb_interface *interface)
2846{
2847 struct usb_device *usbdev = interface_to_usbdev(interface);
2848 u8 config_data[17];
2849 u32 if_num = interface->altsetting->desc.bInterfaceNumber;
2850 s32 result;
2851
2852 if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
2853 0x86, 0xC0, 0, 0, config_data, 17,
2854 USB_CTRL_SET_TIMEOUT) != 0x11) {
2855 return -EIO;
2856 }
2857
2858 switch (config_data[if_num]) {
2859 case 0x0:
2860 result = 0;
2861 break;
2862 case 0x1:
2863 result = HSO_PORT_DIAG;
2864 break;
2865 case 0x2:
2866 result = HSO_PORT_GPS;
2867 break;
2868 case 0x3:
2869 result = HSO_PORT_GPS_CONTROL;
2870 break;
2871 case 0x4:
2872 result = HSO_PORT_APP;
2873 break;
2874 case 0x5:
2875 result = HSO_PORT_APP2;
2876 break;
2877 case 0x6:
2878 result = HSO_PORT_CONTROL;
2879 break;
2880 case 0x7:
2881 result = HSO_PORT_NETWORK;
2882 break;
2883 case 0x8:
2884 result = HSO_PORT_MODEM;
2885 break;
2886 case 0x9:
2887 result = HSO_PORT_MSD;
2888 break;
2889 case 0xa:
2890 result = HSO_PORT_PCSC;
2891 break;
2892 case 0xb:
2893 result = HSO_PORT_VOICE;
2894 break;
2895 default:
2896 result = 0;
2897 }
2898
2899 if (result)
2900 result |= HSO_INTF_BULK;
2901
2902 if (config_data[16] & 0x1)
2903 result |= HSO_INFO_CRC_BUG;
2904
2905 return result;
2906}
2907
2908/* called once for each interface upon device insertion */
2909static int hso_probe(struct usb_interface *interface,
2910 const struct usb_device_id *id)
2911{
2912 int mux, i, if_num, port_spec;
2913 unsigned char port_mask;
2914 struct hso_device *hso_dev = NULL;
2915 struct hso_shared_int *shared_int;
2916 struct hso_device *tmp_dev = NULL;
2917
2918 if_num = interface->altsetting->desc.bInterfaceNumber;
2919
2920 /* Get the interface/port specification from either driver_info or from
2921 * the device itself */
2922 if (id->driver_info)
2923 port_spec = ((u32 *)(id->driver_info))[if_num];
2924 else
2925 port_spec = hso_get_config_data(interface);
2926
2927 if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
2928 dev_err(&interface->dev, "Not our interface\n");
2929 return -ENODEV;
2930 }
2931 /* Check if we need to switch to alt interfaces prior to port
2932 * configuration */
2933 if (interface->num_altsetting > 1)
2934 usb_set_interface(interface_to_usbdev(interface), if_num, 1);
2935 interface->needs_remote_wakeup = 1;
2936
2937 /* Allocate new hso device(s) */
2938 switch (port_spec & HSO_INTF_MASK) {
2939 case HSO_INTF_MUX:
2940 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2941 /* Create the network device */
2942 if (!disable_net) {
2943 hso_dev = hso_create_net_device(interface);
2944 if (!hso_dev)
2945 goto exit;
2946 tmp_dev = hso_dev;
2947 }
2948 }
2949
2950 if (hso_get_mux_ports(interface, &port_mask))
2951 /* TODO: de-allocate everything */
2952 goto exit;
2953
2954 shared_int = hso_create_shared_int(interface);
2955 if (!shared_int)
2956 goto exit;
2957
2958 for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) {
2959 if (port_mask & i) {
2960 hso_dev = hso_create_mux_serial_device(
2961 interface, i, shared_int);
2962 if (!hso_dev)
2963 goto exit;
2964 }
2965 }
2966
2967 if (tmp_dev)
2968 hso_dev = tmp_dev;
2969 break;
2970
2971 case HSO_INTF_BULK:
2972 /* It's a regular bulk interface */
2973 if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK)
2974 && !disable_net)
2975 hso_dev = hso_create_net_device(interface);
2976 else
2977 hso_dev =
2978 hso_create_bulk_serial_device(interface, port_spec);
2979 if (!hso_dev)
2980 goto exit;
2981 break;
2982 default:
2983 goto exit;
2984 }
2985
72dc1c09
GKH		 2986 /* save our data pointer in this device */
2987 usb_set_intfdata(interface, hso_dev);
2988
2989 /* done */
2990 return 0;
2991exit:
2992 hso_free_interface(interface);
2993 return -ENODEV;
2994}
2995
2996/* device removed, cleaning up */
2997static void hso_disconnect(struct usb_interface *interface)
2998{
2999 hso_free_interface(interface);
3000
3001 /* remove reference of our private data */
3002 usb_set_intfdata(interface, NULL);
72dc1c09
GKH		 3003}
3004
3005static void async_get_intf(struct work_struct *data)
3006{
3007 struct hso_device *hso_dev =
3008 container_of(data, struct hso_device, async_get_intf);
3009 usb_autopm_get_interface(hso_dev->interface);
3010}
3011
3012static void async_put_intf(struct work_struct *data)
3013{
3014 struct hso_device *hso_dev =
3015 container_of(data, struct hso_device, async_put_intf);
3016 usb_autopm_put_interface(hso_dev->interface);
3017}
3018
3019static int hso_get_activity(struct hso_device *hso_dev)
3020{
3021 if (hso_dev->usb->state == USB_STATE_SUSPENDED) {
3022 if (!hso_dev->is_active) {
3023 hso_dev->is_active = 1;
3024 schedule_work(&hso_dev->async_get_intf);
3025 }
3026 }
3027
3028 if (hso_dev->usb->state != USB_STATE_CONFIGURED)
3029 return -EAGAIN;
3030
3031 usb_mark_last_busy(hso_dev->usb);
3032
3033 return 0;
3034}
3035
3036static int hso_put_activity(struct hso_device *hso_dev)
3037{
3038 if (hso_dev->usb->state != USB_STATE_SUSPENDED) {
3039 if (hso_dev->is_active) {
3040 hso_dev->is_active = 0;
3041 schedule_work(&hso_dev->async_put_intf);
3042 return -EAGAIN;
3043 }
3044 }
3045 hso_dev->is_active = 0;
3046 return 0;
3047}
3048
3049/* called by kernel when we need to suspend device */
3050static int hso_suspend(struct usb_interface *iface, pm_message_t message)
3051{
3052 int i, result;
3053
3054 /* Stop all serial ports */
3055 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3056 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3057 result = hso_stop_serial_device(serial_table[i]);
3058 if (result)
3059 goto out;
3060 }
3061 }
3062
3063 /* Stop all network ports */
3064 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3065 if (network_table[i] &&
3066 (network_table[i]->interface == iface)) {
3067 result = hso_stop_net_device(network_table[i]);
3068 if (result)
3069 goto out;
3070 }
3071 }
3072
3073out:
3074 return 0;
3075}
3076
3077/* called by kernel when we need to resume device */
3078static int hso_resume(struct usb_interface *iface)
3079{
3080 int i, result = 0;
3081 struct hso_net *hso_net;
3082
3083 /* Start all serial ports */
3084 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3085 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3086 if (dev2ser(serial_table[i])->open_count) {
3087 result =
3088 hso_start_serial_device(serial_table[i], GFP_NOIO);
3089 hso_kick_transmit(dev2ser(serial_table[i]));
3090 if (result)
3091 goto out;
3092 }
3093 }
3094 }
3095
3096 /* Start all network ports */
3097 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3098 if (network_table[i] &&
3099 (network_table[i]->interface == iface)) {
3100 hso_net = dev2net(network_table[i]);
89930b7b
DJB		 3101 if (hso_net->flags & IFF_UP) {
3102 /* First transmit any lingering data,
3103 then restart the device. */
3104 if (hso_net->skb_tx_buf) {
3105 dev_dbg(&iface->dev,
3106 "Transmitting"
3107 " lingering data\n");
3108 hso_net_start_xmit(hso_net->skb_tx_buf,
3109 hso_net->net);
3110 hso_net->skb_tx_buf = NULL;
3111 }
3112 result = hso_start_net_device(network_table[i]);
3113 if (result)
3114 goto out;
72dc1c09 3115 }
72dc1c09
GKH		 3116 }
3117 }
3118
3119out:
3120 return result;
3121}
3122
3123static void hso_serial_ref_free(struct kref *ref)
3124{
3125 struct hso_device *hso_dev = container_of(ref, struct hso_device, ref);
3126
3127 hso_free_serial_device(hso_dev);
3128}
3129
3130static void hso_free_interface(struct usb_interface *interface)
3131{
3132 struct hso_serial *hso_dev;
e136e303 3133 struct tty_struct *tty;
72dc1c09
GKH		 3134 int i;
3135
3136 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3137 if (serial_table[i]
3138 && (serial_table[i]->interface == interface)) {
3139 hso_dev = dev2ser(serial_table[i]);
e136e303
AC		 3140 spin_lock_irq(&hso_dev->serial_lock);
3141 tty = tty_kref_get(hso_dev->tty);
3142 spin_unlock_irq(&hso_dev->serial_lock);
3143 if (tty)
3144 tty_hangup(tty);
ab153d84 3145 mutex_lock(&hso_dev->parent->mutex);
e136e303 3146 tty_kref_put(tty);
72dc1c09 3147 hso_dev->parent->usb_gone = 1;
ab153d84
DM		 3148 mutex_unlock(&hso_dev->parent->mutex);
3149 kref_put(&serial_table[i]->ref, hso_serial_ref_free);
72dc1c09
GKH		 3150 }
3151 }
3152
3153 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3154 if (network_table[i]
3155 && (network_table[i]->interface == interface)) {
3156 struct rfkill *rfk = dev2net(network_table[i])->rfkill;
3157 /* hso_stop_net_device doesn't stop the net queue since
3158 * traffic needs to start it again when suspended */
3159 netif_stop_queue(dev2net(network_table[i])->net);
3160 hso_stop_net_device(network_table[i]);
3161 cancel_work_sync(&network_table[i]->async_put_intf);
3162 cancel_work_sync(&network_table[i]->async_get_intf);
0235f641 3163 if (rfk)
72dc1c09
GKH		 3164 rfkill_unregister(rfk);
3165 hso_free_net_device(network_table[i]);
3166 }
3167 }
3168}
3169
3170/* Helper functions */
3171
3172/* Get the endpoint ! */
3173static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
3174 int type, int dir)
3175{
3176 int i;
3177 struct usb_host_interface *iface = intf->cur_altsetting;
3178 struct usb_endpoint_descriptor *endp;
3179
3180 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3181 endp = &iface->endpoint[i].desc;
3182 if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) &&
f201a8a4 3183 (usb_endpoint_type(endp) == type))
72dc1c09
GKH		 3184 return endp;
3185 }
3186
3187 return NULL;
3188}
3189
3190/* Get the byte that describes which ports are enabled */
3191static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports)
3192{
3193 int i;
3194 struct usb_host_interface *iface = intf->cur_altsetting;
3195
3196 if (iface->extralen == 3) {
3197 *ports = iface->extra[2];
3198 return 0;
3199 }
3200
3201 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3202 if (iface->endpoint[i].extralen == 3) {
3203 *ports = iface->endpoint[i].extra[2];
3204 return 0;
3205 }
3206 }
3207
3208 return -1;
3209}
3210
3211/* interrupt urb needs to be submitted, used for serial read of muxed port */
3212static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int,
3213 struct usb_device *usb, gfp_t gfp)
3214{
3215 int result;
3216
3217 usb_fill_int_urb(shared_int->shared_intr_urb, usb,
3218 usb_rcvintpipe(usb,
3219 shared_int->intr_endp->bEndpointAddress & 0x7F),
3220 shared_int->shared_intr_buf,
3221 shared_int->intr_endp->wMaxPacketSize,
3222 intr_callback, shared_int,
3223 shared_int->intr_endp->bInterval);
3224
3225 result = usb_submit_urb(shared_int->shared_intr_urb, gfp);
3226 if (result)
3227 dev_warn(&usb->dev, "%s failed mux_intr_urb %d", __func__,
3228 result);
3229
3230 return result;
3231}
3232
3233/* operations setup of the serial interface */
6c59f569 3234static const struct tty_operations hso_serial_ops = {
72dc1c09
GKH		 3235 .open = hso_serial_open,
3236 .close = hso_serial_close,
3237 .write = hso_serial_write,
3238 .write_room = hso_serial_write_room,
542f5482 3239 .ioctl = hso_serial_ioctl,
72dc1c09
GKH		 3240 .set_termios = hso_serial_set_termios,
3241 .chars_in_buffer = hso_serial_chars_in_buffer,
3242 .tiocmget = hso_serial_tiocmget,
3243 .tiocmset = hso_serial_tiocmset,
8ef5ba63 3244 .unthrottle = hso_unthrottle
72dc1c09
GKH		 3245};
3246
3247static struct usb_driver hso_driver = {
3248 .name = driver_name,
3249 .probe = hso_probe,
3250 .disconnect = hso_disconnect,
3251 .id_table = hso_ids,
3252 .suspend = hso_suspend,
3253 .resume = hso_resume,
9c8f92ae 3254 .reset_resume = hso_resume,
72dc1c09
GKH		 3255 .supports_autosuspend = 1,
3256};
3257
3258static int __init hso_init(void)
3259{
3260 int i;
3261 int result;
3262
3263 /* put it in the log */
3264 printk(KERN_INFO "hso: %s\n", version);
3265
3266 /* Initialise the serial table semaphore and table */
3267 spin_lock_init(&serial_table_lock);
3268 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++)
3269 serial_table[i] = NULL;
3270
3271 /* allocate our driver using the proper amount of supported minors */
3272 tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS);
3273 if (!tty_drv)
3274 return -ENOMEM;
3275
3276 /* fill in all needed values */
3277 tty_drv->magic = TTY_DRIVER_MAGIC;
3278 tty_drv->owner = THIS_MODULE;
3279 tty_drv->driver_name = driver_name;
3280 tty_drv->name = tty_filename;
3281
3282 /* if major number is provided as parameter, use that one */
3283 if (tty_major)
3284 tty_drv->major = tty_major;
3285
3286 tty_drv->minor_start = 0;
3287 tty_drv->num = HSO_SERIAL_TTY_MINORS;
3288 tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
3289 tty_drv->subtype = SERIAL_TYPE_NORMAL;
3290 tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
3291 tty_drv->init_termios = tty_std_termios;
ac9720c3 3292 hso_init_termios(&tty_drv->init_termios);
72dc1c09
GKH		 3293 tty_set_operations(tty_drv, &hso_serial_ops);
3294
3295 /* register the tty driver */
3296 result = tty_register_driver(tty_drv);
3297 if (result) {
3298 printk(KERN_ERR "%s - tty_register_driver failed(%d)\n",
3299 __func__, result);
3300 return result;
3301 }
3302
3303 /* register this module as an usb driver */
3304 result = usb_register(&hso_driver);
3305 if (result) {
3306 printk(KERN_ERR "Could not register hso driver? error: %d\n",
3307 result);
3308 /* cleanup serial interface */
3309 tty_unregister_driver(tty_drv);
3310 return result;
3311 }
3312
3313 /* done */
3314 return 0;
3315}
3316
3317static void __exit hso_exit(void)
3318{
3319 printk(KERN_INFO "hso: unloaded\n");
3320
3321 tty_unregister_driver(tty_drv);
3322 /* deregister the usb driver */
3323 usb_deregister(&hso_driver);
3324}
3325
3326/* Module definitions */
3327module_init(hso_init);
3328module_exit(hso_exit);
3329
3330MODULE_AUTHOR(MOD_AUTHOR);
3331MODULE_DESCRIPTION(MOD_DESCRIPTION);
3332MODULE_LICENSE(MOD_LICENSE);
3333MODULE_INFO(Version, DRIVER_VERSION);
3334
3335/* change the debug level (eg: insmod hso.ko debug=0x04) */
3336MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
3337module_param(debug, int, S_IRUGO | S_IWUSR);
3338
3339/* set the major tty number (eg: insmod hso.ko tty_major=245) */
3340MODULE_PARM_DESC(tty_major, "Set the major tty number");
3341module_param(tty_major, int, S_IRUGO | S_IWUSR);
3342
3343/* disable network interface (eg: insmod hso.ko disable_net=1) */
3344MODULE_PARM_DESC(disable_net, "Disable the network interface");
3345module_param(disable_net, int, S_IRUGO | S_IWUSR);
Clone of davem's net-next-2.6 tree