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38
39#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
40
41#include <linux/sched/signal.h>
42#include <linux/slab.h>
43#include <linux/init.h>
44#include <linux/delay.h>
45#include <linux/netdevice.h>
46#include <linux/module.h>
47#include <linux/ethtool.h>
48#include <linux/usb.h>
49#include <linux/tty.h>
50#include <linux/tty_driver.h>
51#include <linux/tty_flip.h>
52#include <linux/kmod.h>
53#include <linux/rfkill.h>
54#include <linux/ip.h>
55#include <linux/uaccess.h>
56#include <linux/usb/cdc.h>
57#include <net/arp.h>
58#include <asm/byteorder.h>
59#include <linux/serial_core.h>
60#include <linux/serial.h>
61
62
63#define MOD_AUTHOR "Option Wireless"
64#define MOD_DESCRIPTION "USB High Speed Option driver"
65
66#define HSO_MAX_NET_DEVICES 10
67#define HSO__MAX_MTU 2048
68#define DEFAULT_MTU 1500
69#define DEFAULT_MRU 1500
70
71#define CTRL_URB_RX_SIZE 1024
72#define CTRL_URB_TX_SIZE 64
73
74#define BULK_URB_RX_SIZE 4096
75#define BULK_URB_TX_SIZE 8192
76
77#define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU
78#define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU
79#define MUX_BULK_RX_BUF_COUNT 4
80#define USB_TYPE_OPTION_VENDOR 0x20
81
82
83
84#define HSO_NET_RUNNING 0
85
86#define HSO_NET_TX_TIMEOUT (HZ*10)
87
88#define HSO_SERIAL_MAGIC 0x48534f31
89
90
91#define HSO_SERIAL_TTY_MINORS 256
92
93#define MAX_RX_URBS 2
94
95
96
97
98#define hso_dbg(lvl, fmt, ...) \
99do { \
100 if ((lvl) & debug) \
101 pr_info("[%d:%s] " fmt, \
102 __LINE__, __func__, ##__VA_ARGS__); \
103} while (0)
104
105
106
107
108enum pkt_parse_state {
109 WAIT_IP,
110 WAIT_DATA,
111 WAIT_SYNC
112};
113
114
115
116
117
118struct hso_shared_int {
119 struct usb_endpoint_descriptor *intr_endp;
120 void *shared_intr_buf;
121 struct urb *shared_intr_urb;
122 struct usb_device *usb;
123 int use_count;
124 int ref_count;
125 struct mutex shared_int_lock;
126};
127
128struct hso_net {
129 struct hso_device *parent;
130 struct net_device *net;
131 struct rfkill *rfkill;
132 char name[24];
133
134 struct usb_endpoint_descriptor *in_endp;
135 struct usb_endpoint_descriptor *out_endp;
136
137 struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT];
138 struct urb *mux_bulk_tx_urb;
139 void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT];
140 void *mux_bulk_tx_buf;
141
142 struct sk_buff *skb_rx_buf;
143 struct sk_buff *skb_tx_buf;
144
145 enum pkt_parse_state rx_parse_state;
146 spinlock_t net_lock;
147
148 unsigned short rx_buf_size;
149 unsigned short rx_buf_missing;
150 struct iphdr rx_ip_hdr;
151
152 unsigned long flags;
153};
154
155enum rx_ctrl_state{
156 RX_IDLE,
157 RX_SENT,
158 RX_PENDING
159};
160
161#define BM_REQUEST_TYPE (0xa1)
162#define B_NOTIFICATION (0x20)
163#define W_VALUE (0x0)
164#define W_LENGTH (0x2)
165
166#define B_OVERRUN (0x1<<6)
167#define B_PARITY (0x1<<5)
168#define B_FRAMING (0x1<<4)
169#define B_RING_SIGNAL (0x1<<3)
170#define B_BREAK (0x1<<2)
171#define B_TX_CARRIER (0x1<<1)
172#define B_RX_CARRIER (0x1<<0)
173
174struct hso_serial_state_notification {
175 u8 bmRequestType;
176 u8 bNotification;
177 u16 wValue;
178 u16 wIndex;
179 u16 wLength;
180 u16 UART_state_bitmap;
181} __packed;
182
183struct hso_tiocmget {
184 struct mutex mutex;
185 wait_queue_head_t waitq;
186 int intr_completed;
187 struct usb_endpoint_descriptor *endp;
188 struct urb *urb;
189 struct hso_serial_state_notification *serial_state_notification;
190 u16 prev_UART_state_bitmap;
191 struct uart_icount icount;
192};
193
194
195struct hso_serial {
196 struct hso_device *parent;
197 int magic;
198 u8 minor;
199
200 struct hso_shared_int *shared_int;
201
202
203
204 struct urb *rx_urb[MAX_RX_URBS];
205 u8 num_rx_urbs;
206 u8 *rx_data[MAX_RX_URBS];
207 u16 rx_data_length;
208
209 struct urb *tx_urb;
210 u8 *tx_data;
211 u8 *tx_buffer;
212 u16 tx_data_length;
213 u16 tx_data_count;
214 u16 tx_buffer_count;
215 struct usb_ctrlrequest ctrl_req_tx;
216 struct usb_ctrlrequest ctrl_req_rx;
217
218 struct usb_endpoint_descriptor *in_endp;
219 struct usb_endpoint_descriptor *out_endp;
220
221 enum rx_ctrl_state rx_state;
222 u8 rts_state;
223 u8 dtr_state;
224 unsigned tx_urb_used:1;
225
226 struct tty_port port;
227
228 spinlock_t serial_lock;
229
230 int (*write_data) (struct hso_serial *serial);
231 struct hso_tiocmget *tiocmget;
232
233
234
235
236 int curr_rx_urb_idx;
237 u8 rx_urb_filled[MAX_RX_URBS];
238 struct tasklet_struct unthrottle_tasklet;
239};
240
241struct hso_device {
242 union {
243 struct hso_serial *dev_serial;
244 struct hso_net *dev_net;
245 } port_data;
246
247 u32 port_spec;
248
249 u8 is_active;
250 u8 usb_gone;
251 struct work_struct async_get_intf;
252 struct work_struct async_put_intf;
253
254 struct usb_device *usb;
255 struct usb_interface *interface;
256
257 struct device *dev;
258 struct kref ref;
259 struct mutex mutex;
260};
261
262
263#define HSO_INTF_MASK 0xFF00
264#define HSO_INTF_MUX 0x0100
265#define HSO_INTF_BULK 0x0200
266
267
268#define HSO_PORT_MASK 0xFF
269#define HSO_PORT_NO_PORT 0x0
270#define HSO_PORT_CONTROL 0x1
271#define HSO_PORT_APP 0x2
272#define HSO_PORT_GPS 0x3
273#define HSO_PORT_PCSC 0x4
274#define HSO_PORT_APP2 0x5
275#define HSO_PORT_GPS_CONTROL 0x6
276#define HSO_PORT_MSD 0x7
277#define HSO_PORT_VOICE 0x8
278#define HSO_PORT_DIAG2 0x9
279#define HSO_PORT_DIAG 0x10
280#define HSO_PORT_MODEM 0x11
281#define HSO_PORT_NETWORK 0x12
282
283
284#define HSO_INFO_MASK 0xFF000000
285#define HSO_INFO_CRC_BUG 0x01000000
286
287
288
289
290
291static int hso_serial_tiocmset(struct tty_struct *tty,
292 unsigned int set, unsigned int clear);
293static void ctrl_callback(struct urb *urb);
294static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial);
295static void hso_kick_transmit(struct hso_serial *serial);
296
297static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int,
298 struct usb_device *usb, gfp_t gfp);
299static void handle_usb_error(int status, const char *function,
300 struct hso_device *hso_dev);
301static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
302 int type, int dir);
303static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports);
304static void hso_free_interface(struct usb_interface *intf);
305static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags);
306static int hso_stop_serial_device(struct hso_device *hso_dev);
307static int hso_start_net_device(struct hso_device *hso_dev);
308static void hso_free_shared_int(struct hso_shared_int *shared_int);
309static int hso_stop_net_device(struct hso_device *hso_dev);
310static void hso_serial_ref_free(struct kref *ref);
311static void hso_std_serial_read_bulk_callback(struct urb *urb);
312static int hso_mux_serial_read(struct hso_serial *serial);
313static void async_get_intf(struct work_struct *data);
314static void async_put_intf(struct work_struct *data);
315static int hso_put_activity(struct hso_device *hso_dev);
316static int hso_get_activity(struct hso_device *hso_dev);
317static void tiocmget_intr_callback(struct urb *urb);
318
319
320
321
322
323
324static inline struct hso_net *dev2net(struct hso_device *hso_dev)
325{
326 return hso_dev->port_data.dev_net;
327}
328
329static inline struct hso_serial *dev2ser(struct hso_device *hso_dev)
330{
331 return hso_dev->port_data.dev_serial;
332}
333
334
335#ifdef DEBUG
336static void dbg_dump(int line_count, const char *func_name, unsigned char *buf,
337 unsigned int len)
338{
339 static char name[255];
340
341 sprintf(name, "hso[%d:%s]", line_count, func_name);
342 print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len);
343}
344
345#define DUMP(buf_, len_) \
346 dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_)
347
348#define DUMP1(buf_, len_) \
349 do { \
350 if (0x01 & debug) \
351 DUMP(buf_, len_); \
352 } while (0)
353#else
354#define DUMP(buf_, len_)
355#define DUMP1(buf_, len_)
356#endif
357
358
359static int debug;
360static int tty_major;
361static int disable_net;
362
363
364static const char driver_name[] = "hso";
365static const char tty_filename[] = "ttyHS";
366static const char *version = __FILE__ ": " MOD_AUTHOR;
367
368static struct usb_driver hso_driver;
369
370static struct tty_driver *tty_drv;
371static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS];
372static struct hso_device *network_table[HSO_MAX_NET_DEVICES];
373static DEFINE_SPINLOCK(serial_table_lock);
374
375static const s32 default_port_spec[] = {
376 HSO_INTF_MUX | HSO_PORT_NETWORK,
377 HSO_INTF_BULK | HSO_PORT_DIAG,
378 HSO_INTF_BULK | HSO_PORT_MODEM,
379 0
380};
381
382static const s32 icon321_port_spec[] = {
383 HSO_INTF_MUX | HSO_PORT_NETWORK,
384 HSO_INTF_BULK | HSO_PORT_DIAG2,
385 HSO_INTF_BULK | HSO_PORT_MODEM,
386 HSO_INTF_BULK | HSO_PORT_DIAG,
387 0
388};
389
390#define default_port_device(vendor, product) \
391 USB_DEVICE(vendor, product), \
392 .driver_info = (kernel_ulong_t)default_port_spec
393
394#define icon321_port_device(vendor, product) \
395 USB_DEVICE(vendor, product), \
396 .driver_info = (kernel_ulong_t)icon321_port_spec
397
398
399static const struct usb_device_id hso_ids[] = {
400 {default_port_device(0x0af0, 0x6711)},
401 {default_port_device(0x0af0, 0x6731)},
402 {default_port_device(0x0af0, 0x6751)},
403 {default_port_device(0x0af0, 0x6771)},
404 {default_port_device(0x0af0, 0x6791)},
405 {default_port_device(0x0af0, 0x6811)},
406 {default_port_device(0x0af0, 0x6911)},
407 {default_port_device(0x0af0, 0x6951)},
408 {default_port_device(0x0af0, 0x6971)},
409 {default_port_device(0x0af0, 0x7011)},
410 {default_port_device(0x0af0, 0x7031)},
411 {default_port_device(0x0af0, 0x7051)},
412 {default_port_device(0x0af0, 0x7071)},
413 {default_port_device(0x0af0, 0x7111)},
414 {default_port_device(0x0af0, 0x7211)},
415 {default_port_device(0x0af0, 0x7251)},
416 {default_port_device(0x0af0, 0x7271)},
417 {default_port_device(0x0af0, 0x7311)},
418 {default_port_device(0x0af0, 0xc031)},
419 {icon321_port_device(0x0af0, 0xd013)},
420 {icon321_port_device(0x0af0, 0xd031)},
421 {icon321_port_device(0x0af0, 0xd033)},
422 {USB_DEVICE(0x0af0, 0x7301)},
423 {USB_DEVICE(0x0af0, 0x7361)},
424 {USB_DEVICE(0x0af0, 0x7381)},
425 {USB_DEVICE(0x0af0, 0x7401)},
426 {USB_DEVICE(0x0af0, 0x7501)},
427 {USB_DEVICE(0x0af0, 0x7601)},
428 {USB_DEVICE(0x0af0, 0x7701)},
429 {USB_DEVICE(0x0af0, 0x7706)},
430 {USB_DEVICE(0x0af0, 0x7801)},
431 {USB_DEVICE(0x0af0, 0x7901)},
432 {USB_DEVICE(0x0af0, 0x7A01)},
433 {USB_DEVICE(0x0af0, 0x7A05)},
434 {USB_DEVICE(0x0af0, 0x8200)},
435 {USB_DEVICE(0x0af0, 0x8201)},
436 {USB_DEVICE(0x0af0, 0x8300)},
437 {USB_DEVICE(0x0af0, 0x8302)},
438 {USB_DEVICE(0x0af0, 0x8304)},
439 {USB_DEVICE(0x0af0, 0x8400)},
440 {USB_DEVICE(0x0af0, 0x8600)},
441 {USB_DEVICE(0x0af0, 0x8800)},
442 {USB_DEVICE(0x0af0, 0x8900)},
443 {USB_DEVICE(0x0af0, 0x9000)},
444 {USB_DEVICE(0x0af0, 0x9200)},
445 {USB_DEVICE(0x0af0, 0xd035)},
446 {USB_DEVICE(0x0af0, 0xd055)},
447 {USB_DEVICE(0x0af0, 0xd155)},
448 {USB_DEVICE(0x0af0, 0xd255)},
449 {USB_DEVICE(0x0af0, 0xd057)},
450 {USB_DEVICE(0x0af0, 0xd157)},
451 {USB_DEVICE(0x0af0, 0xd257)},
452 {USB_DEVICE(0x0af0, 0xd357)},
453 {USB_DEVICE(0x0af0, 0xd058)},
454 {USB_DEVICE(0x0af0, 0xc100)},
455 {}
456};
457MODULE_DEVICE_TABLE(usb, hso_ids);
458
459
460static ssize_t hsotype_show(struct device *dev,
461 struct device_attribute *attr, char *buf)
462{
463 struct hso_device *hso_dev = dev_get_drvdata(dev);
464 char *port_name;
465
466 if (!hso_dev)
467 return 0;
468
469 switch (hso_dev->port_spec & HSO_PORT_MASK) {
470 case HSO_PORT_CONTROL:
471 port_name = "Control";
472 break;
473 case HSO_PORT_APP:
474 port_name = "Application";
475 break;
476 case HSO_PORT_APP2:
477 port_name = "Application2";
478 break;
479 case HSO_PORT_GPS:
480 port_name = "GPS";
481 break;
482 case HSO_PORT_GPS_CONTROL:
483 port_name = "GPS Control";
484 break;
485 case HSO_PORT_PCSC:
486 port_name = "PCSC";
487 break;
488 case HSO_PORT_DIAG:
489 port_name = "Diagnostic";
490 break;
491 case HSO_PORT_DIAG2:
492 port_name = "Diagnostic2";
493 break;
494 case HSO_PORT_MODEM:
495 port_name = "Modem";
496 break;
497 case HSO_PORT_NETWORK:
498 port_name = "Network";
499 break;
500 default:
501 port_name = "Unknown";
502 break;
503 }
504
505 return sprintf(buf, "%s\n", port_name);
506}
507static DEVICE_ATTR_RO(hsotype);
508
509static struct attribute *hso_serial_dev_attrs[] = {
510 &dev_attr_hsotype.attr,
511 NULL
512};
513
514ATTRIBUTE_GROUPS(hso_serial_dev);
515
516static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb)
517{
518 int idx;
519
520 for (idx = 0; idx < serial->num_rx_urbs; idx++)
521 if (serial->rx_urb[idx] == urb)
522 return idx;
523 dev_err(serial->parent->dev, "hso_urb_to_index failed\n");
524 return -1;
525}
526
527
528static u32 hso_mux_to_port(int mux)
529{
530 u32 result;
531
532 switch (mux) {
533 case 0x1:
534 result = HSO_PORT_CONTROL;
535 break;
536 case 0x2:
537 result = HSO_PORT_APP;
538 break;
539 case 0x4:
540 result = HSO_PORT_PCSC;
541 break;
542 case 0x8:
543 result = HSO_PORT_GPS;
544 break;
545 case 0x10:
546 result = HSO_PORT_APP2;
547 break;
548 default:
549 result = HSO_PORT_NO_PORT;
550 }
551 return result;
552}
553
554
555static u32 hso_port_to_mux(int port)
556{
557 u32 result;
558
559 switch (port & HSO_PORT_MASK) {
560 case HSO_PORT_CONTROL:
561 result = 0x0;
562 break;
563 case HSO_PORT_APP:
564 result = 0x1;
565 break;
566 case HSO_PORT_PCSC:
567 result = 0x2;
568 break;
569 case HSO_PORT_GPS:
570 result = 0x3;
571 break;
572 case HSO_PORT_APP2:
573 result = 0x4;
574 break;
575 default:
576 result = 0x0;
577 }
578 return result;
579}
580
581static struct hso_serial *get_serial_by_shared_int_and_type(
582 struct hso_shared_int *shared_int,
583 int mux)
584{
585 int i, port;
586
587 port = hso_mux_to_port(mux);
588
589 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
590 if (serial_table[i] &&
591 (dev2ser(serial_table[i])->shared_int == shared_int) &&
592 ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) {
593 return dev2ser(serial_table[i]);
594 }
595 }
596
597 return NULL;
598}
599
600static struct hso_serial *get_serial_by_index(unsigned index)
601{
602 struct hso_serial *serial = NULL;
603 unsigned long flags;
604
605 spin_lock_irqsave(&serial_table_lock, flags);
606 if (serial_table[index])
607 serial = dev2ser(serial_table[index]);
608 spin_unlock_irqrestore(&serial_table_lock, flags);
609
610 return serial;
611}
612
613static int obtain_minor(struct hso_serial *serial)
614{
615 int index;
616 unsigned long flags;
617
618 spin_lock_irqsave(&serial_table_lock, flags);
619 for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) {
620 if (serial_table[index] == NULL) {
621 serial_table[index] = serial->parent;
622 serial->minor = index;
623 spin_unlock_irqrestore(&serial_table_lock, flags);
624 return 0;
625 }
626 }
627 spin_unlock_irqrestore(&serial_table_lock, flags);
628
629 pr_err("%s: no free serial devices in table\n", __func__);
630 return -1;
631}
632
633static void release_minor(struct hso_serial *serial)
634{
635 unsigned long flags;
636
637 spin_lock_irqsave(&serial_table_lock, flags);
638 serial_table[serial->minor] = NULL;
639 spin_unlock_irqrestore(&serial_table_lock, flags);
640}
641
642static void handle_usb_error(int status, const char *function,
643 struct hso_device *hso_dev)
644{
645 char *explanation;
646
647 switch (status) {
648 case -ENODEV:
649 explanation = "no device";
650 break;
651 case -ENOENT:
652 explanation = "endpoint not enabled";
653 break;
654 case -EPIPE:
655 explanation = "endpoint stalled";
656 break;
657 case -ENOSPC:
658 explanation = "not enough bandwidth";
659 break;
660 case -ESHUTDOWN:
661 explanation = "device disabled";
662 break;
663 case -EHOSTUNREACH:
664 explanation = "device suspended";
665 break;
666 case -EINVAL:
667 case -EAGAIN:
668 case -EFBIG:
669 case -EMSGSIZE:
670 explanation = "internal error";
671 break;
672 case -EILSEQ:
673 case -EPROTO:
674 case -ETIME:
675 case -ETIMEDOUT:
676 explanation = "protocol error";
677 if (hso_dev)
678 usb_queue_reset_device(hso_dev->interface);
679 break;
680 default:
681 explanation = "unknown status";
682 break;
683 }
684
685
686 hso_dbg(0x1, "%s: received USB status - %s (%d)\n",
687 function, explanation, status);
688}
689
690
691
692
693static int hso_net_open(struct net_device *net)
694{
695 struct hso_net *odev = netdev_priv(net);
696 unsigned long flags = 0;
697
698 if (!odev) {
699 dev_err(&net->dev, "No net device !\n");
700 return -ENODEV;
701 }
702
703 odev->skb_tx_buf = NULL;
704
705
706 spin_lock_irqsave(&odev->net_lock, flags);
707 odev->rx_parse_state = WAIT_IP;
708 odev->rx_buf_size = 0;
709 odev->rx_buf_missing = sizeof(struct iphdr);
710 spin_unlock_irqrestore(&odev->net_lock, flags);
711
712
713 set_bit(HSO_NET_RUNNING, &odev->flags);
714 hso_start_net_device(odev->parent);
715
716
717 netif_start_queue(net);
718
719 return 0;
720}
721
722
723static int hso_net_close(struct net_device *net)
724{
725 struct hso_net *odev = netdev_priv(net);
726
727
728 netif_stop_queue(net);
729
730 clear_bit(HSO_NET_RUNNING, &odev->flags);
731
732 hso_stop_net_device(odev->parent);
733
734
735 return 0;
736}
737
738
739static void write_bulk_callback(struct urb *urb)
740{
741 struct hso_net *odev = urb->context;
742 int status = urb->status;
743
744
745 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
746 dev_err(&urb->dev->dev, "%s: device not running\n", __func__);
747 return;
748 }
749
750
751 if (!netif_device_present(odev->net)) {
752 dev_err(&urb->dev->dev, "%s: net device not present\n",
753 __func__);
754 return;
755 }
756
757
758
759 if (status)
760 handle_usb_error(status, __func__, odev->parent);
761
762 hso_put_activity(odev->parent);
763
764
765 netif_wake_queue(odev->net);
766}
767
768
769static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb,
770 struct net_device *net)
771{
772 struct hso_net *odev = netdev_priv(net);
773 int result;
774
775
776 netif_stop_queue(net);
777 if (hso_get_activity(odev->parent) == -EAGAIN) {
778 odev->skb_tx_buf = skb;
779 return NETDEV_TX_OK;
780 }
781
782
783 DUMP1(skb->data, skb->len);
784
785 memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len);
786 hso_dbg(0x1, "len: %d/%d\n", skb->len, MUX_BULK_TX_BUF_SIZE);
787
788
789 usb_fill_bulk_urb(odev->mux_bulk_tx_urb,
790 odev->parent->usb,
791 usb_sndbulkpipe(odev->parent->usb,
792 odev->out_endp->
793 bEndpointAddress & 0x7F),
794 odev->mux_bulk_tx_buf, skb->len, write_bulk_callback,
795 odev);
796
797
798 odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET;
799
800
801 result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC);
802 if (result) {
803 dev_warn(&odev->parent->interface->dev,
804 "failed mux_bulk_tx_urb %d\n", result);
805 net->stats.tx_errors++;
806 netif_start_queue(net);
807 } else {
808 net->stats.tx_packets++;
809 net->stats.tx_bytes += skb->len;
810 }
811 dev_kfree_skb(skb);
812
813 return NETDEV_TX_OK;
814}
815
816static const struct ethtool_ops ops = {
817 .get_link = ethtool_op_get_link
818};
819
820
821static void hso_net_tx_timeout(struct net_device *net, unsigned int txqueue)
822{
823 struct hso_net *odev = netdev_priv(net);
824
825 if (!odev)
826 return;
827
828
829 dev_warn(&net->dev, "Tx timed out.\n");
830
831
832 if (odev->mux_bulk_tx_urb)
833 usb_unlink_urb(odev->mux_bulk_tx_urb);
834
835
836 net->stats.tx_errors++;
837}
838
839
840static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt,
841 unsigned int count, unsigned char is_eop)
842{
843 unsigned short temp_bytes;
844 unsigned short buffer_offset = 0;
845 unsigned short frame_len;
846
847
848 hso_dbg(0x1, "Rx %d bytes\n", count);
849 DUMP(ip_pkt, min(128, (int)count));
850
851 while (count) {
852 switch (odev->rx_parse_state) {
853 case WAIT_IP:
854
855
856 temp_bytes =
857 (count <
858 odev->rx_buf_missing) ? count : odev->
859 rx_buf_missing;
860
861 memcpy(((unsigned char *)(&odev->rx_ip_hdr)) +
862 odev->rx_buf_size, ip_pkt + buffer_offset,
863 temp_bytes);
864
865 odev->rx_buf_size += temp_bytes;
866 buffer_offset += temp_bytes;
867 odev->rx_buf_missing -= temp_bytes;
868 count -= temp_bytes;
869
870 if (!odev->rx_buf_missing) {
871
872
873 frame_len = ntohs(odev->rx_ip_hdr.tot_len);
874
875 if ((frame_len > DEFAULT_MRU) ||
876 (frame_len < sizeof(struct iphdr))) {
877 dev_err(&odev->net->dev,
878 "Invalid frame (%d) length\n",
879 frame_len);
880 odev->rx_parse_state = WAIT_SYNC;
881 continue;
882 }
883
884 odev->skb_rx_buf = netdev_alloc_skb(odev->net,
885 frame_len);
886 if (!odev->skb_rx_buf) {
887
888 hso_dbg(0x1, "could not allocate memory\n");
889 odev->rx_parse_state = WAIT_SYNC;
890 continue;
891 }
892
893
894
895 skb_put_data(odev->skb_rx_buf,
896 (char *)&(odev->rx_ip_hdr),
897 sizeof(struct iphdr));
898
899
900 odev->rx_buf_size = sizeof(struct iphdr);
901
902
903 odev->rx_buf_missing =
904 frame_len - sizeof(struct iphdr);
905 odev->rx_parse_state = WAIT_DATA;
906 }
907 break;
908
909 case WAIT_DATA:
910 temp_bytes = (count < odev->rx_buf_missing)
911 ? count : odev->rx_buf_missing;
912
913
914
915
916 skb_put_data(odev->skb_rx_buf,
917 ip_pkt + buffer_offset,
918 temp_bytes);
919
920 odev->rx_buf_missing -= temp_bytes;
921 count -= temp_bytes;
922 buffer_offset += temp_bytes;
923 odev->rx_buf_size += temp_bytes;
924 if (!odev->rx_buf_missing) {
925
926
927 odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP);
928 skb_reset_mac_header(odev->skb_rx_buf);
929
930
931 netif_rx(odev->skb_rx_buf);
932
933 odev->skb_rx_buf = NULL;
934
935
936 odev->net->stats.rx_packets++;
937
938 odev->net->stats.rx_bytes += odev->rx_buf_size;
939
940 odev->rx_buf_size = 0;
941 odev->rx_buf_missing = sizeof(struct iphdr);
942 odev->rx_parse_state = WAIT_IP;
943 }
944 break;
945
946 case WAIT_SYNC:
947 hso_dbg(0x1, " W_S\n");
948 count = 0;
949 break;
950 default:
951 hso_dbg(0x1, "\n");
952 count--;
953 break;
954 }
955 }
956
957
958 if (is_eop) {
959 if (odev->rx_parse_state == WAIT_SYNC) {
960 odev->rx_parse_state = WAIT_IP;
961 odev->rx_buf_size = 0;
962 odev->rx_buf_missing = sizeof(struct iphdr);
963 }
964 }
965}
966
967static void fix_crc_bug(struct urb *urb, __le16 max_packet_size)
968{
969 static const u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
970 u32 rest = urb->actual_length % le16_to_cpu(max_packet_size);
971
972 if (((rest == 5) || (rest == 6)) &&
973 !memcmp(((u8 *)urb->transfer_buffer) + urb->actual_length - 4,
974 crc_check, 4)) {
975 urb->actual_length -= 4;
976 }
977}
978
979
980static void read_bulk_callback(struct urb *urb)
981{
982 struct hso_net *odev = urb->context;
983 struct net_device *net;
984 int result;
985 unsigned long flags;
986 int status = urb->status;
987
988
989 if (status) {
990 handle_usb_error(status, __func__, odev->parent);
991 return;
992 }
993
994
995 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
996 hso_dbg(0x1, "BULK IN callback but driver is not active!\n");
997 return;
998 }
999 usb_mark_last_busy(urb->dev);
1000
1001 net = odev->net;
1002
1003 if (!netif_device_present(net)) {
1004
1005 return;
1006 }
1007
1008 if (odev->parent->port_spec & HSO_INFO_CRC_BUG)
1009 fix_crc_bug(urb, odev->in_endp->wMaxPacketSize);
1010
1011
1012 if (urb->actual_length) {
1013
1014
1015 spin_lock_irqsave(&odev->net_lock, flags);
1016 packetizeRx(odev, urb->transfer_buffer, urb->actual_length,
1017 (urb->transfer_buffer_length >
1018 urb->actual_length) ? 1 : 0);
1019 spin_unlock_irqrestore(&odev->net_lock, flags);
1020 }
1021
1022
1023
1024 usb_fill_bulk_urb(urb,
1025 odev->parent->usb,
1026 usb_rcvbulkpipe(odev->parent->usb,
1027 odev->in_endp->
1028 bEndpointAddress & 0x7F),
1029 urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE,
1030 read_bulk_callback, odev);
1031
1032
1033
1034 result = usb_submit_urb(urb, GFP_ATOMIC);
1035 if (result)
1036 dev_warn(&odev->parent->interface->dev,
1037 "%s failed submit mux_bulk_rx_urb %d\n", __func__,
1038 result);
1039}
1040
1041
1042
1043static void hso_init_termios(struct ktermios *termios)
1044{
1045
1046
1047
1048 termios->c_iflag &=
1049 ~(IGNBRK
1050 | BRKINT
1051 | PARMRK
1052 | ISTRIP
1053 | INLCR
1054 | IGNCR
1055 | ICRNL
1056 | IXON);
1057
1058
1059 termios->c_oflag &= ~OPOST;
1060
1061 termios->c_lflag &=
1062 ~(ECHO
1063 | ECHONL
1064 | ICANON
1065
1066 | ISIG
1067
1068 | IEXTEN);
1069
1070 termios->c_cflag &=
1071 ~(CSIZE
1072 | PARENB
1073 | CBAUD
1074 | CBAUDEX);
1075
1076 termios->c_cflag |= CS8;
1077
1078
1079 tty_termios_encode_baud_rate(termios, 115200, 115200);
1080}
1081
1082static void _hso_serial_set_termios(struct tty_struct *tty)
1083{
1084 struct hso_serial *serial = tty->driver_data;
1085
1086 if (!serial) {
1087 pr_err("%s: no tty structures", __func__);
1088 return;
1089 }
1090
1091 hso_dbg(0x8, "port %d\n", serial->minor);
1092
1093
1094
1095
1096 tty->termios.c_iflag &= ~IXON;
1097
1098 tty->termios.c_cflag &=
1099 ~(CSIZE
1100 | PARENB
1101 | CBAUD
1102 | CBAUDEX);
1103
1104 tty->termios.c_cflag |= CS8;
1105
1106
1107 tty_encode_baud_rate(tty, 115200, 115200);
1108}
1109
1110static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb)
1111{
1112 int result;
1113
1114
1115 usb_fill_bulk_urb(urb, serial->parent->usb,
1116 usb_rcvbulkpipe(serial->parent->usb,
1117 serial->in_endp->
1118 bEndpointAddress & 0x7F),
1119 urb->transfer_buffer, serial->rx_data_length,
1120 hso_std_serial_read_bulk_callback, serial);
1121
1122
1123 result = usb_submit_urb(urb, GFP_ATOMIC);
1124 if (result) {
1125 dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n",
1126 __func__, result);
1127 }
1128}
1129
1130
1131
1132
1133static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial)
1134{
1135 int count;
1136 struct urb *curr_urb;
1137
1138 while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) {
1139 curr_urb = serial->rx_urb[serial->curr_rx_urb_idx];
1140 count = put_rxbuf_data(curr_urb, serial);
1141 if (count == -1)
1142 return;
1143 if (count == 0) {
1144 serial->curr_rx_urb_idx++;
1145 if (serial->curr_rx_urb_idx >= serial->num_rx_urbs)
1146 serial->curr_rx_urb_idx = 0;
1147 hso_resubmit_rx_bulk_urb(serial, curr_urb);
1148 }
1149 }
1150}
1151
1152static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
1153{
1154 int count = 0;
1155 struct urb *urb;
1156
1157 urb = serial->rx_urb[0];
1158 if (serial->port.count > 0) {
1159 count = put_rxbuf_data(urb, serial);
1160 if (count == -1)
1161 return;
1162 }
1163
1164
1165 if (count == 0 && ((urb->actual_length != 0) ||
1166 (serial->rx_state == RX_PENDING))) {
1167 serial->rx_state = RX_SENT;
1168 hso_mux_serial_read(serial);
1169 } else
1170 serial->rx_state = RX_IDLE;
1171}
1172
1173
1174
1175static void hso_std_serial_read_bulk_callback(struct urb *urb)
1176{
1177 struct hso_serial *serial = urb->context;
1178 int status = urb->status;
1179 unsigned long flags;
1180
1181 hso_dbg(0x8, "--- Got serial_read_bulk callback %02x ---\n", status);
1182
1183
1184 if (!serial) {
1185 hso_dbg(0x1, "serial == NULL\n");
1186 return;
1187 }
1188 if (status) {
1189 handle_usb_error(status, __func__, serial->parent);
1190 return;
1191 }
1192
1193 hso_dbg(0x1, "Actual length = %d\n", urb->actual_length);
1194 DUMP1(urb->transfer_buffer, urb->actual_length);
1195
1196
1197 if (serial->port.count == 0)
1198 return;
1199
1200 if (serial->parent->port_spec & HSO_INFO_CRC_BUG)
1201 fix_crc_bug(urb, serial->in_endp->wMaxPacketSize);
1202
1203 spin_lock_irqsave(&serial->serial_lock, flags);
1204 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1;
1205 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1206 spin_unlock_irqrestore(&serial->serial_lock, flags);
1207}
1208
1209
1210
1211
1212
1213static void hso_unthrottle_tasklet(struct tasklet_struct *t)
1214{
1215 struct hso_serial *serial = from_tasklet(serial, t,
1216 unthrottle_tasklet);
1217 unsigned long flags;
1218
1219 spin_lock_irqsave(&serial->serial_lock, flags);
1220 if ((serial->parent->port_spec & HSO_INTF_MUX))
1221 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
1222 else
1223 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1224 spin_unlock_irqrestore(&serial->serial_lock, flags);
1225}
1226
1227static void hso_unthrottle(struct tty_struct *tty)
1228{
1229 struct hso_serial *serial = tty->driver_data;
1230
1231 tasklet_hi_schedule(&serial->unthrottle_tasklet);
1232}
1233
1234
1235static int hso_serial_open(struct tty_struct *tty, struct file *filp)
1236{
1237 struct hso_serial *serial = get_serial_by_index(tty->index);
1238 int result;
1239
1240
1241 if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) {
1242 WARN_ON(1);
1243 tty->driver_data = NULL;
1244 hso_dbg(0x1, "Failed to open port\n");
1245 return -ENODEV;
1246 }
1247
1248 mutex_lock(&serial->parent->mutex);
1249 result = usb_autopm_get_interface(serial->parent->interface);
1250 if (result < 0)
1251 goto err_out;
1252
1253 hso_dbg(0x1, "Opening %d\n", serial->minor);
1254
1255
1256 tty->driver_data = serial;
1257 tty_port_tty_set(&serial->port, tty);
1258
1259
1260 serial->port.count++;
1261 if (serial->port.count == 1) {
1262 serial->rx_state = RX_IDLE;
1263
1264 _hso_serial_set_termios(tty);
1265 tasklet_setup(&serial->unthrottle_tasklet,
1266 hso_unthrottle_tasklet);
1267 result = hso_start_serial_device(serial->parent, GFP_KERNEL);
1268 if (result) {
1269 hso_stop_serial_device(serial->parent);
1270 serial->port.count--;
1271 } else {
1272 kref_get(&serial->parent->ref);
1273 }
1274 } else {
1275 hso_dbg(0x1, "Port was already open\n");
1276 }
1277
1278 usb_autopm_put_interface(serial->parent->interface);
1279
1280
1281 if (result)
1282 hso_serial_tiocmset(tty, TIOCM_RTS | TIOCM_DTR, 0);
1283err_out:
1284 mutex_unlock(&serial->parent->mutex);
1285 return result;
1286}
1287
1288
1289static void hso_serial_close(struct tty_struct *tty, struct file *filp)
1290{
1291 struct hso_serial *serial = tty->driver_data;
1292 u8 usb_gone;
1293
1294 hso_dbg(0x1, "Closing serial port\n");
1295
1296
1297 if (serial == NULL)
1298 return;
1299
1300 mutex_lock(&serial->parent->mutex);
1301 usb_gone = serial->parent->usb_gone;
1302
1303 if (!usb_gone)
1304 usb_autopm_get_interface(serial->parent->interface);
1305
1306
1307
1308 serial->port.count--;
1309
1310 if (serial->port.count <= 0) {
1311 serial->port.count = 0;
1312 tty_port_tty_set(&serial->port, NULL);
1313 if (!usb_gone)
1314 hso_stop_serial_device(serial->parent);
1315 tasklet_kill(&serial->unthrottle_tasklet);
1316 }
1317
1318 if (!usb_gone)
1319 usb_autopm_put_interface(serial->parent->interface);
1320
1321 mutex_unlock(&serial->parent->mutex);
1322}
1323
1324
1325static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf,
1326 int count)
1327{
1328 struct hso_serial *serial = tty->driver_data;
1329 int space, tx_bytes;
1330 unsigned long flags;
1331
1332
1333 if (serial == NULL) {
1334 pr_err("%s: serial is NULL\n", __func__);
1335 return -ENODEV;
1336 }
1337
1338 spin_lock_irqsave(&serial->serial_lock, flags);
1339
1340 space = serial->tx_data_length - serial->tx_buffer_count;
1341 tx_bytes = (count < space) ? count : space;
1342
1343 if (!tx_bytes)
1344 goto out;
1345
1346 memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes);
1347 serial->tx_buffer_count += tx_bytes;
1348
1349out:
1350 spin_unlock_irqrestore(&serial->serial_lock, flags);
1351
1352 hso_kick_transmit(serial);
1353
1354 return tx_bytes;
1355}
1356
1357
1358static unsigned int hso_serial_write_room(struct tty_struct *tty)
1359{
1360 struct hso_serial *serial = tty->driver_data;
1361 unsigned int room;
1362 unsigned long flags;
1363
1364 spin_lock_irqsave(&serial->serial_lock, flags);
1365 room = serial->tx_data_length - serial->tx_buffer_count;
1366 spin_unlock_irqrestore(&serial->serial_lock, flags);
1367
1368
1369 return room;
1370}
1371
1372static void hso_serial_cleanup(struct tty_struct *tty)
1373{
1374 struct hso_serial *serial = tty->driver_data;
1375
1376 if (!serial)
1377 return;
1378
1379 kref_put(&serial->parent->ref, hso_serial_ref_free);
1380}
1381
1382
1383static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
1384{
1385 struct hso_serial *serial = tty->driver_data;
1386 unsigned long flags;
1387
1388 if (old)
1389 hso_dbg(0x16, "Termios called with: cflags new[%u] - old[%u]\n",
1390 (unsigned int)tty->termios.c_cflag,
1391 (unsigned int)old->c_cflag);
1392
1393
1394 spin_lock_irqsave(&serial->serial_lock, flags);
1395 if (serial->port.count)
1396 _hso_serial_set_termios(tty);
1397 else
1398 tty->termios = *old;
1399 spin_unlock_irqrestore(&serial->serial_lock, flags);
1400
1401
1402}
1403
1404
1405static unsigned int hso_serial_chars_in_buffer(struct tty_struct *tty)
1406{
1407 struct hso_serial *serial = tty->driver_data;
1408 unsigned long flags;
1409 unsigned int chars;
1410
1411
1412 if (serial == NULL)
1413 return 0;
1414
1415 spin_lock_irqsave(&serial->serial_lock, flags);
1416 chars = serial->tx_buffer_count;
1417 spin_unlock_irqrestore(&serial->serial_lock, flags);
1418
1419 return chars;
1420}
1421static int tiocmget_submit_urb(struct hso_serial *serial,
1422 struct hso_tiocmget *tiocmget,
1423 struct usb_device *usb)
1424{
1425 int result;
1426
1427 if (serial->parent->usb_gone)
1428 return -ENODEV;
1429 usb_fill_int_urb(tiocmget->urb, usb,
1430 usb_rcvintpipe(usb,
1431 tiocmget->endp->
1432 bEndpointAddress & 0x7F),
1433 tiocmget->serial_state_notification,
1434 sizeof(struct hso_serial_state_notification),
1435 tiocmget_intr_callback, serial,
1436 tiocmget->endp->bInterval);
1437 result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC);
1438 if (result) {
1439 dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__,
1440 result);
1441 }
1442 return result;
1443
1444}
1445
1446static void tiocmget_intr_callback(struct urb *urb)
1447{
1448 struct hso_serial *serial = urb->context;
1449 struct hso_tiocmget *tiocmget;
1450 int status = urb->status;
1451 u16 UART_state_bitmap, prev_UART_state_bitmap;
1452 struct uart_icount *icount;
1453 struct hso_serial_state_notification *serial_state_notification;
1454 struct usb_device *usb;
1455 struct usb_interface *interface;
1456 int if_num;
1457
1458
1459 if (!serial)
1460 return;
1461 if (status) {
1462 handle_usb_error(status, __func__, serial->parent);
1463 return;
1464 }
1465
1466
1467 tiocmget = serial->tiocmget;
1468 if (!tiocmget)
1469 return;
1470 BUG_ON((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM);
1471
1472 usb = serial->parent->usb;
1473 interface = serial->parent->interface;
1474
1475 if_num = interface->cur_altsetting->desc.bInterfaceNumber;
1476
1477
1478
1479
1480 serial_state_notification = tiocmget->serial_state_notification;
1481 if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE ||
1482 serial_state_notification->bNotification != B_NOTIFICATION ||
1483 le16_to_cpu(serial_state_notification->wValue) != W_VALUE ||
1484 le16_to_cpu(serial_state_notification->wIndex) != if_num ||
1485 le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) {
1486 dev_warn(&usb->dev,
1487 "hso received invalid serial state notification\n");
1488 DUMP(serial_state_notification,
1489 sizeof(struct hso_serial_state_notification));
1490 } else {
1491 unsigned long flags;
1492
1493 UART_state_bitmap = le16_to_cpu(serial_state_notification->
1494 UART_state_bitmap);
1495 prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap;
1496 icount = &tiocmget->icount;
1497 spin_lock_irqsave(&serial->serial_lock, flags);
1498 if ((UART_state_bitmap & B_OVERRUN) !=
1499 (prev_UART_state_bitmap & B_OVERRUN))
1500 icount->parity++;
1501 if ((UART_state_bitmap & B_PARITY) !=
1502 (prev_UART_state_bitmap & B_PARITY))
1503 icount->parity++;
1504 if ((UART_state_bitmap & B_FRAMING) !=
1505 (prev_UART_state_bitmap & B_FRAMING))
1506 icount->frame++;
1507 if ((UART_state_bitmap & B_RING_SIGNAL) &&
1508 !(prev_UART_state_bitmap & B_RING_SIGNAL))
1509 icount->rng++;
1510 if ((UART_state_bitmap & B_BREAK) !=
1511 (prev_UART_state_bitmap & B_BREAK))
1512 icount->brk++;
1513 if ((UART_state_bitmap & B_TX_CARRIER) !=
1514 (prev_UART_state_bitmap & B_TX_CARRIER))
1515 icount->dsr++;
1516 if ((UART_state_bitmap & B_RX_CARRIER) !=
1517 (prev_UART_state_bitmap & B_RX_CARRIER))
1518 icount->dcd++;
1519 tiocmget->prev_UART_state_bitmap = UART_state_bitmap;
1520 spin_unlock_irqrestore(&serial->serial_lock, flags);
1521 tiocmget->intr_completed = 1;
1522 wake_up_interruptible(&tiocmget->waitq);
1523 }
1524 memset(serial_state_notification, 0,
1525 sizeof(struct hso_serial_state_notification));
1526 tiocmget_submit_urb(serial,
1527 tiocmget,
1528 serial->parent->usb);
1529}
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539static int
1540hso_wait_modem_status(struct hso_serial *serial, unsigned long arg)
1541{
1542 DECLARE_WAITQUEUE(wait, current);
1543 struct uart_icount cprev, cnow;
1544 struct hso_tiocmget *tiocmget;
1545 int ret;
1546
1547 tiocmget = serial->tiocmget;
1548 if (!tiocmget)
1549 return -ENOENT;
1550
1551
1552
1553 spin_lock_irq(&serial->serial_lock);
1554 memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount));
1555 spin_unlock_irq(&serial->serial_lock);
1556 add_wait_queue(&tiocmget->waitq, &wait);
1557 for (;;) {
1558 spin_lock_irq(&serial->serial_lock);
1559 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1560 spin_unlock_irq(&serial->serial_lock);
1561 set_current_state(TASK_INTERRUPTIBLE);
1562 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1563 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1564 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) {
1565 ret = 0;
1566 break;
1567 }
1568 schedule();
1569
1570 if (signal_pending(current)) {
1571 ret = -ERESTARTSYS;
1572 break;
1573 }
1574 cprev = cnow;
1575 }
1576 __set_current_state(TASK_RUNNING);
1577 remove_wait_queue(&tiocmget->waitq, &wait);
1578
1579 return ret;
1580}
1581
1582
1583
1584
1585
1586
1587
1588static int hso_get_count(struct tty_struct *tty,
1589 struct serial_icounter_struct *icount)
1590{
1591 struct uart_icount cnow;
1592 struct hso_serial *serial = tty->driver_data;
1593 struct hso_tiocmget *tiocmget = serial->tiocmget;
1594
1595 memset(icount, 0, sizeof(struct serial_icounter_struct));
1596
1597 if (!tiocmget)
1598 return -ENOENT;
1599 spin_lock_irq(&serial->serial_lock);
1600 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1601 spin_unlock_irq(&serial->serial_lock);
1602
1603 icount->cts = cnow.cts;
1604 icount->dsr = cnow.dsr;
1605 icount->rng = cnow.rng;
1606 icount->dcd = cnow.dcd;
1607 icount->rx = cnow.rx;
1608 icount->tx = cnow.tx;
1609 icount->frame = cnow.frame;
1610 icount->overrun = cnow.overrun;
1611 icount->parity = cnow.parity;
1612 icount->brk = cnow.brk;
1613 icount->buf_overrun = cnow.buf_overrun;
1614
1615 return 0;
1616}
1617
1618
1619static int hso_serial_tiocmget(struct tty_struct *tty)
1620{
1621 int retval;
1622 struct hso_serial *serial = tty->driver_data;
1623 struct hso_tiocmget *tiocmget;
1624 u16 UART_state_bitmap;
1625
1626
1627 if (!serial) {
1628 hso_dbg(0x1, "no tty structures\n");
1629 return -EINVAL;
1630 }
1631 spin_lock_irq(&serial->serial_lock);
1632 retval = ((serial->rts_state) ? TIOCM_RTS : 0) |
1633 ((serial->dtr_state) ? TIOCM_DTR : 0);
1634 tiocmget = serial->tiocmget;
1635 if (tiocmget) {
1636
1637 UART_state_bitmap = le16_to_cpu(
1638 tiocmget->prev_UART_state_bitmap);
1639 if (UART_state_bitmap & B_RING_SIGNAL)
1640 retval |= TIOCM_RNG;
1641 if (UART_state_bitmap & B_RX_CARRIER)
1642 retval |= TIOCM_CD;
1643 if (UART_state_bitmap & B_TX_CARRIER)
1644 retval |= TIOCM_DSR;
1645 }
1646 spin_unlock_irq(&serial->serial_lock);
1647 return retval;
1648}
1649
1650static int hso_serial_tiocmset(struct tty_struct *tty,
1651 unsigned int set, unsigned int clear)
1652{
1653 int val = 0;
1654 unsigned long flags;
1655 int if_num;
1656 struct hso_serial *serial = tty->driver_data;
1657 struct usb_interface *interface;
1658
1659
1660 if (!serial) {
1661 hso_dbg(0x1, "no tty structures\n");
1662 return -EINVAL;
1663 }
1664
1665 if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM)
1666 return -EINVAL;
1667
1668 interface = serial->parent->interface;
1669 if_num = interface->cur_altsetting->desc.bInterfaceNumber;
1670
1671 spin_lock_irqsave(&serial->serial_lock, flags);
1672 if (set & TIOCM_RTS)
1673 serial->rts_state = 1;
1674 if (set & TIOCM_DTR)
1675 serial->dtr_state = 1;
1676
1677 if (clear & TIOCM_RTS)
1678 serial->rts_state = 0;
1679 if (clear & TIOCM_DTR)
1680 serial->dtr_state = 0;
1681
1682 if (serial->dtr_state)
1683 val |= 0x01;
1684 if (serial->rts_state)
1685 val |= 0x02;
1686
1687 spin_unlock_irqrestore(&serial->serial_lock, flags);
1688
1689 return usb_control_msg(serial->parent->usb,
1690 usb_sndctrlpipe(serial->parent->usb, 0), 0x22,
1691 0x21, val, if_num, NULL, 0,
1692 USB_CTRL_SET_TIMEOUT);
1693}
1694
1695static int hso_serial_ioctl(struct tty_struct *tty,
1696 unsigned int cmd, unsigned long arg)
1697{
1698 struct hso_serial *serial = tty->driver_data;
1699 int ret = 0;
1700 hso_dbg(0x8, "IOCTL cmd: %d, arg: %ld\n", cmd, arg);
1701
1702 if (!serial)
1703 return -ENODEV;
1704 switch (cmd) {
1705 case TIOCMIWAIT:
1706 ret = hso_wait_modem_status(serial, arg);
1707 break;
1708 default:
1709 ret = -ENOIOCTLCMD;
1710 break;
1711 }
1712 return ret;
1713}
1714
1715
1716
1717static void hso_kick_transmit(struct hso_serial *serial)
1718{
1719 unsigned long flags;
1720 int res;
1721
1722 spin_lock_irqsave(&serial->serial_lock, flags);
1723 if (!serial->tx_buffer_count)
1724 goto out;
1725
1726 if (serial->tx_urb_used)
1727 goto out;
1728
1729
1730 if (hso_get_activity(serial->parent) == -EAGAIN)
1731 goto out;
1732
1733
1734 swap(serial->tx_buffer, serial->tx_data);
1735 serial->tx_data_count = serial->tx_buffer_count;
1736 serial->tx_buffer_count = 0;
1737
1738
1739 if (serial->tx_data && serial->write_data) {
1740 res = serial->write_data(serial);
1741 if (res >= 0)
1742 serial->tx_urb_used = 1;
1743 }
1744out:
1745 spin_unlock_irqrestore(&serial->serial_lock, flags);
1746}
1747
1748
1749static int mux_device_request(struct hso_serial *serial, u8 type, u16 port,
1750 struct urb *ctrl_urb,
1751 struct usb_ctrlrequest *ctrl_req,
1752 u8 *ctrl_urb_data, u32 size)
1753{
1754 int result;
1755 int pipe;
1756
1757
1758 if (!serial || !ctrl_urb || !ctrl_req) {
1759 pr_err("%s: Wrong arguments\n", __func__);
1760 return -EINVAL;
1761 }
1762
1763
1764 ctrl_req->wValue = 0;
1765 ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port));
1766 ctrl_req->wLength = cpu_to_le16(size);
1767
1768 if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) {
1769
1770 ctrl_req->bRequestType = USB_DIR_IN |
1771 USB_TYPE_OPTION_VENDOR |
1772 USB_RECIP_INTERFACE;
1773 ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
1774 pipe = usb_rcvctrlpipe(serial->parent->usb, 0);
1775 } else {
1776
1777 ctrl_req->bRequestType = USB_DIR_OUT |
1778 USB_TYPE_OPTION_VENDOR |
1779 USB_RECIP_INTERFACE;
1780 ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND;
1781 pipe = usb_sndctrlpipe(serial->parent->usb, 0);
1782 }
1783
1784 hso_dbg(0x2, "%s command (%02x) len: %d, port: %d\n",
1785 type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write",
1786 ctrl_req->bRequestType, ctrl_req->wLength, port);
1787
1788
1789 ctrl_urb->transfer_flags = 0;
1790 usb_fill_control_urb(ctrl_urb,
1791 serial->parent->usb,
1792 pipe,
1793 (u8 *) ctrl_req,
1794 ctrl_urb_data, size, ctrl_callback, serial);
1795
1796 result = usb_submit_urb(ctrl_urb, GFP_ATOMIC);
1797 if (result) {
1798 dev_err(&ctrl_urb->dev->dev,
1799 "%s failed submit ctrl_urb %d type %d\n", __func__,
1800 result, type);
1801 return result;
1802 }
1803
1804
1805 return size;
1806}
1807
1808
1809static int hso_mux_serial_read(struct hso_serial *serial)
1810{
1811 if (!serial)
1812 return -EINVAL;
1813
1814
1815 memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE);
1816
1817
1818 if (serial->num_rx_urbs != 1) {
1819 dev_err(&serial->parent->interface->dev,
1820 "ERROR: mux'd reads with multiple buffers "
1821 "not possible\n");
1822 return 0;
1823 }
1824 return mux_device_request(serial,
1825 USB_CDC_GET_ENCAPSULATED_RESPONSE,
1826 serial->parent->port_spec & HSO_PORT_MASK,
1827 serial->rx_urb[0],
1828 &serial->ctrl_req_rx,
1829 serial->rx_data[0], serial->rx_data_length);
1830}
1831
1832
1833static void intr_callback(struct urb *urb)
1834{
1835 struct hso_shared_int *shared_int = urb->context;
1836 struct hso_serial *serial;
1837 unsigned char *port_req;
1838 int status = urb->status;
1839 unsigned long flags;
1840 int i;
1841
1842 usb_mark_last_busy(urb->dev);
1843
1844
1845 if (!shared_int)
1846 return;
1847
1848
1849 if (status) {
1850 handle_usb_error(status, __func__, NULL);
1851 return;
1852 }
1853 hso_dbg(0x8, "--- Got intr callback 0x%02X ---\n", status);
1854
1855
1856 port_req = urb->transfer_buffer;
1857 hso_dbg(0x8, "port_req = 0x%.2X\n", *port_req);
1858
1859 for (i = 0; i < 8; i++) {
1860
1861 if (*port_req & (1 << i)) {
1862 serial = get_serial_by_shared_int_and_type(shared_int,
1863 (1 << i));
1864 if (serial != NULL) {
1865 hso_dbg(0x1, "Pending read interrupt on port %d\n",
1866 i);
1867 spin_lock_irqsave(&serial->serial_lock, flags);
1868 if (serial->rx_state == RX_IDLE &&
1869 serial->port.count > 0) {
1870
1871
1872 if (!serial->rx_urb_filled[0]) {
1873 serial->rx_state = RX_SENT;
1874 hso_mux_serial_read(serial);
1875 } else
1876 serial->rx_state = RX_PENDING;
1877 } else {
1878 hso_dbg(0x1, "Already a read pending on port %d or port not open\n",
1879 i);
1880 }
1881 spin_unlock_irqrestore(&serial->serial_lock,
1882 flags);
1883 }
1884 }
1885 }
1886
1887 hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC);
1888}
1889
1890
1891static int hso_mux_serial_write_data(struct hso_serial *serial)
1892{
1893 if (NULL == serial)
1894 return -EINVAL;
1895
1896 return mux_device_request(serial,
1897 USB_CDC_SEND_ENCAPSULATED_COMMAND,
1898 serial->parent->port_spec & HSO_PORT_MASK,
1899 serial->tx_urb,
1900 &serial->ctrl_req_tx,
1901 serial->tx_data, serial->tx_data_count);
1902}
1903
1904
1905static void hso_std_serial_write_bulk_callback(struct urb *urb)
1906{
1907 struct hso_serial *serial = urb->context;
1908 int status = urb->status;
1909 unsigned long flags;
1910
1911
1912 if (!serial) {
1913 hso_dbg(0x1, "serial == NULL\n");
1914 return;
1915 }
1916
1917 spin_lock_irqsave(&serial->serial_lock, flags);
1918 serial->tx_urb_used = 0;
1919 spin_unlock_irqrestore(&serial->serial_lock, flags);
1920 if (status) {
1921 handle_usb_error(status, __func__, serial->parent);
1922 return;
1923 }
1924 hso_put_activity(serial->parent);
1925 tty_port_tty_wakeup(&serial->port);
1926 hso_kick_transmit(serial);
1927
1928 hso_dbg(0x1, "\n");
1929}
1930
1931
1932static int hso_std_serial_write_data(struct hso_serial *serial)
1933{
1934 int count = serial->tx_data_count;
1935 int result;
1936
1937 usb_fill_bulk_urb(serial->tx_urb,
1938 serial->parent->usb,
1939 usb_sndbulkpipe(serial->parent->usb,
1940 serial->out_endp->
1941 bEndpointAddress & 0x7F),
1942 serial->tx_data, serial->tx_data_count,
1943 hso_std_serial_write_bulk_callback, serial);
1944
1945 result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC);
1946 if (result) {
1947 dev_warn(&serial->parent->usb->dev,
1948 "Failed to submit urb - res %d\n", result);
1949 return result;
1950 }
1951
1952 return count;
1953}
1954
1955
1956static void ctrl_callback(struct urb *urb)
1957{
1958 struct hso_serial *serial = urb->context;
1959 struct usb_ctrlrequest *req;
1960 int status = urb->status;
1961 unsigned long flags;
1962
1963
1964 if (!serial)
1965 return;
1966
1967 spin_lock_irqsave(&serial->serial_lock, flags);
1968 serial->tx_urb_used = 0;
1969 spin_unlock_irqrestore(&serial->serial_lock, flags);
1970 if (status) {
1971 handle_usb_error(status, __func__, serial->parent);
1972 return;
1973 }
1974
1975
1976 req = (struct usb_ctrlrequest *)(urb->setup_packet);
1977 hso_dbg(0x8, "--- Got muxed ctrl callback 0x%02X ---\n", status);
1978 hso_dbg(0x8, "Actual length of urb = %d\n", urb->actual_length);
1979 DUMP1(urb->transfer_buffer, urb->actual_length);
1980
1981 if (req->bRequestType ==
1982 (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) {
1983
1984 serial->rx_urb_filled[0] = 1;
1985 spin_lock_irqsave(&serial->serial_lock, flags);
1986 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
1987 spin_unlock_irqrestore(&serial->serial_lock, flags);
1988 } else {
1989 hso_put_activity(serial->parent);
1990 tty_port_tty_wakeup(&serial->port);
1991
1992 hso_kick_transmit(serial);
1993 }
1994}
1995
1996
1997static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
1998{
1999 struct tty_struct *tty;
2000 int count;
2001
2002
2003 if (urb == NULL || serial == NULL) {
2004 hso_dbg(0x1, "serial = NULL\n");
2005 return -2;
2006 }
2007
2008 tty = tty_port_tty_get(&serial->port);
2009
2010 if (tty && tty_throttled(tty)) {
2011 tty_kref_put(tty);
2012 return -1;
2013 }
2014
2015
2016 hso_dbg(0x1, "data to push to tty\n");
2017 count = tty_buffer_request_room(&serial->port, urb->actual_length);
2018 if (count >= urb->actual_length) {
2019 tty_insert_flip_string(&serial->port, urb->transfer_buffer,
2020 urb->actual_length);
2021 tty_flip_buffer_push(&serial->port);
2022 } else {
2023 dev_warn(&serial->parent->usb->dev,
2024 "dropping data, %d bytes lost\n", urb->actual_length);
2025 }
2026
2027 tty_kref_put(tty);
2028
2029 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
2030
2031 return 0;
2032}
2033
2034
2035
2036
2037static void hso_log_port(struct hso_device *hso_dev)
2038{
2039 char *port_type;
2040 char port_dev[20];
2041
2042 switch (hso_dev->port_spec & HSO_PORT_MASK) {
2043 case HSO_PORT_CONTROL:
2044 port_type = "Control";
2045 break;
2046 case HSO_PORT_APP:
2047 port_type = "Application";
2048 break;
2049 case HSO_PORT_GPS:
2050 port_type = "GPS";
2051 break;
2052 case HSO_PORT_GPS_CONTROL:
2053 port_type = "GPS control";
2054 break;
2055 case HSO_PORT_APP2:
2056 port_type = "Application2";
2057 break;
2058 case HSO_PORT_PCSC:
2059 port_type = "PCSC";
2060 break;
2061 case HSO_PORT_DIAG:
2062 port_type = "Diagnostic";
2063 break;
2064 case HSO_PORT_DIAG2:
2065 port_type = "Diagnostic2";
2066 break;
2067 case HSO_PORT_MODEM:
2068 port_type = "Modem";
2069 break;
2070 case HSO_PORT_NETWORK:
2071 port_type = "Network";
2072 break;
2073 default:
2074 port_type = "Unknown";
2075 break;
2076 }
2077 if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2078 sprintf(port_dev, "%s", dev2net(hso_dev)->net->name);
2079 } else
2080 sprintf(port_dev, "/dev/%s%d", tty_filename,
2081 dev2ser(hso_dev)->minor);
2082
2083 dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n",
2084 port_type, port_dev);
2085}
2086
2087static int hso_start_net_device(struct hso_device *hso_dev)
2088{
2089 int i, result = 0;
2090 struct hso_net *hso_net = dev2net(hso_dev);
2091
2092 if (!hso_net)
2093 return -ENODEV;
2094
2095
2096 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2097
2098
2099 usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i],
2100 hso_dev->usb,
2101 usb_rcvbulkpipe(hso_dev->usb,
2102 hso_net->in_endp->
2103 bEndpointAddress & 0x7F),
2104 hso_net->mux_bulk_rx_buf_pool[i],
2105 MUX_BULK_RX_BUF_SIZE, read_bulk_callback,
2106 hso_net);
2107
2108
2109 result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i],
2110 GFP_NOIO);
2111 if (result)
2112 dev_warn(&hso_dev->usb->dev,
2113 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__,
2114 i, result);
2115 }
2116
2117 return result;
2118}
2119
2120static int hso_stop_net_device(struct hso_device *hso_dev)
2121{
2122 int i;
2123 struct hso_net *hso_net = dev2net(hso_dev);
2124
2125 if (!hso_net)
2126 return -ENODEV;
2127
2128 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2129 if (hso_net->mux_bulk_rx_urb_pool[i])
2130 usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2131
2132 }
2133 if (hso_net->mux_bulk_tx_urb)
2134 usb_kill_urb(hso_net->mux_bulk_tx_urb);
2135
2136 return 0;
2137}
2138
2139static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags)
2140{
2141 int i, result = 0;
2142 struct hso_serial *serial = dev2ser(hso_dev);
2143
2144 if (!serial)
2145 return -ENODEV;
2146
2147
2148
2149 if (!(serial->parent->port_spec & HSO_INTF_MUX)) {
2150 for (i = 0; i < serial->num_rx_urbs; i++) {
2151 usb_fill_bulk_urb(serial->rx_urb[i],
2152 serial->parent->usb,
2153 usb_rcvbulkpipe(serial->parent->usb,
2154 serial->in_endp->
2155 bEndpointAddress &
2156 0x7F),
2157 serial->rx_data[i],
2158 serial->rx_data_length,
2159 hso_std_serial_read_bulk_callback,
2160 serial);
2161 result = usb_submit_urb(serial->rx_urb[i], flags);
2162 if (result) {
2163 dev_warn(&serial->parent->usb->dev,
2164 "Failed to submit urb - res %d\n",
2165 result);
2166 break;
2167 }
2168 }
2169 } else {
2170 mutex_lock(&serial->shared_int->shared_int_lock);
2171 if (!serial->shared_int->use_count) {
2172 result =
2173 hso_mux_submit_intr_urb(serial->shared_int,
2174 hso_dev->usb, flags);
2175 }
2176 serial->shared_int->use_count++;
2177 mutex_unlock(&serial->shared_int->shared_int_lock);
2178 }
2179 if (serial->tiocmget)
2180 tiocmget_submit_urb(serial,
2181 serial->tiocmget,
2182 serial->parent->usb);
2183 return result;
2184}
2185
2186static int hso_stop_serial_device(struct hso_device *hso_dev)
2187{
2188 int i;
2189 struct hso_serial *serial = dev2ser(hso_dev);
2190 struct hso_tiocmget *tiocmget;
2191
2192 if (!serial)
2193 return -ENODEV;
2194
2195 for (i = 0; i < serial->num_rx_urbs; i++) {
2196 if (serial->rx_urb[i]) {
2197 usb_kill_urb(serial->rx_urb[i]);
2198 serial->rx_urb_filled[i] = 0;
2199 }
2200 }
2201 serial->curr_rx_urb_idx = 0;
2202
2203 if (serial->tx_urb)
2204 usb_kill_urb(serial->tx_urb);
2205
2206 if (serial->shared_int) {
2207 mutex_lock(&serial->shared_int->shared_int_lock);
2208 if (serial->shared_int->use_count &&
2209 (--serial->shared_int->use_count == 0)) {
2210 struct urb *urb;
2211
2212 urb = serial->shared_int->shared_intr_urb;
2213 if (urb)
2214 usb_kill_urb(urb);
2215 }
2216 mutex_unlock(&serial->shared_int->shared_int_lock);
2217 }
2218 tiocmget = serial->tiocmget;
2219 if (tiocmget) {
2220 wake_up_interruptible(&tiocmget->waitq);
2221 usb_kill_urb(tiocmget->urb);
2222 }
2223
2224 return 0;
2225}
2226
2227static void hso_serial_tty_unregister(struct hso_serial *serial)
2228{
2229 tty_unregister_device(tty_drv, serial->minor);
2230 release_minor(serial);
2231}
2232
2233static void hso_serial_common_free(struct hso_serial *serial)
2234{
2235 int i;
2236
2237 for (i = 0; i < serial->num_rx_urbs; i++) {
2238
2239 usb_free_urb(serial->rx_urb[i]);
2240
2241 kfree(serial->rx_data[i]);
2242 }
2243
2244
2245 usb_free_urb(serial->tx_urb);
2246 kfree(serial->tx_buffer);
2247 kfree(serial->tx_data);
2248 tty_port_destroy(&serial->port);
2249}
2250
2251static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
2252 int rx_size, int tx_size)
2253{
2254 int i;
2255
2256 tty_port_init(&serial->port);
2257
2258 if (obtain_minor(serial))
2259 goto exit2;
2260
2261
2262 serial->parent->dev = tty_port_register_device_attr(&serial->port,
2263 tty_drv, serial->minor, &serial->parent->interface->dev,
2264 serial->parent, hso_serial_dev_groups);
2265 if (IS_ERR(serial->parent->dev)) {
2266 release_minor(serial);
2267 goto exit2;
2268 }
2269
2270 serial->magic = HSO_SERIAL_MAGIC;
2271 spin_lock_init(&serial->serial_lock);
2272 serial->num_rx_urbs = num_urbs;
2273
2274
2275
2276
2277 serial->rx_data_length = rx_size;
2278 for (i = 0; i < serial->num_rx_urbs; i++) {
2279 serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
2280 if (!serial->rx_urb[i])
2281 goto exit;
2282 serial->rx_urb[i]->transfer_buffer = NULL;
2283 serial->rx_urb[i]->transfer_buffer_length = 0;
2284 serial->rx_data[i] = kzalloc(serial->rx_data_length,
2285 GFP_KERNEL);
2286 if (!serial->rx_data[i])
2287 goto exit;
2288 }
2289
2290
2291 serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2292 if (!serial->tx_urb)
2293 goto exit;
2294 serial->tx_urb->transfer_buffer = NULL;
2295 serial->tx_urb->transfer_buffer_length = 0;
2296
2297 serial->tx_data_count = 0;
2298 serial->tx_buffer_count = 0;
2299 serial->tx_data_length = tx_size;
2300 serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL);
2301 if (!serial->tx_data)
2302 goto exit;
2303
2304 serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL);
2305 if (!serial->tx_buffer)
2306 goto exit;
2307
2308 return 0;
2309exit:
2310 hso_serial_tty_unregister(serial);
2311exit2:
2312 hso_serial_common_free(serial);
2313 return -1;
2314}
2315
2316
2317static struct hso_device *hso_create_device(struct usb_interface *intf,
2318 int port_spec)
2319{
2320 struct hso_device *hso_dev;
2321
2322 hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC);
2323 if (!hso_dev)
2324 return NULL;
2325
2326 hso_dev->port_spec = port_spec;
2327 hso_dev->usb = interface_to_usbdev(intf);
2328 hso_dev->interface = intf;
2329 kref_init(&hso_dev->ref);
2330 mutex_init(&hso_dev->mutex);
2331
2332 INIT_WORK(&hso_dev->async_get_intf, async_get_intf);
2333 INIT_WORK(&hso_dev->async_put_intf, async_put_intf);
2334
2335 return hso_dev;
2336}
2337
2338
2339static int remove_net_device(struct hso_device *hso_dev)
2340{
2341 int i;
2342
2343 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2344 if (network_table[i] == hso_dev) {
2345 network_table[i] = NULL;
2346 break;
2347 }
2348 }
2349 if (i == HSO_MAX_NET_DEVICES)
2350 return -1;
2351 return 0;
2352}
2353
2354
2355static void hso_free_net_device(struct hso_device *hso_dev)
2356{
2357 int i;
2358 struct hso_net *hso_net = dev2net(hso_dev);
2359
2360 if (!hso_net)
2361 return;
2362
2363 remove_net_device(hso_net->parent);
2364
2365 if (hso_net->net)
2366 unregister_netdev(hso_net->net);
2367
2368
2369 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2370 usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2371 kfree(hso_net->mux_bulk_rx_buf_pool[i]);
2372 hso_net->mux_bulk_rx_buf_pool[i] = NULL;
2373 }
2374 usb_free_urb(hso_net->mux_bulk_tx_urb);
2375 kfree(hso_net->mux_bulk_tx_buf);
2376 hso_net->mux_bulk_tx_buf = NULL;
2377
2378 if (hso_net->net)
2379 free_netdev(hso_net->net);
2380
2381 kfree(hso_dev);
2382}
2383
2384static const struct net_device_ops hso_netdev_ops = {
2385 .ndo_open = hso_net_open,
2386 .ndo_stop = hso_net_close,
2387 .ndo_start_xmit = hso_net_start_xmit,
2388 .ndo_tx_timeout = hso_net_tx_timeout,
2389};
2390
2391
2392static void hso_net_init(struct net_device *net)
2393{
2394 struct hso_net *hso_net = netdev_priv(net);
2395
2396 hso_dbg(0x1, "sizeof hso_net is %zu\n", sizeof(*hso_net));
2397
2398
2399 net->netdev_ops = &hso_netdev_ops;
2400 net->watchdog_timeo = HSO_NET_TX_TIMEOUT;
2401 net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
2402 net->type = ARPHRD_NONE;
2403 net->mtu = DEFAULT_MTU - 14;
2404 net->tx_queue_len = 10;
2405 net->ethtool_ops = &ops;
2406
2407
2408 spin_lock_init(&hso_net->net_lock);
2409}
2410
2411
2412static int add_net_device(struct hso_device *hso_dev)
2413{
2414 int i;
2415
2416 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2417 if (network_table[i] == NULL) {
2418 network_table[i] = hso_dev;
2419 break;
2420 }
2421 }
2422 if (i == HSO_MAX_NET_DEVICES)
2423 return -1;
2424 return 0;
2425}
2426
2427static int hso_rfkill_set_block(void *data, bool blocked)
2428{
2429 struct hso_device *hso_dev = data;
2430 int enabled = !blocked;
2431 int rv;
2432
2433 mutex_lock(&hso_dev->mutex);
2434 if (hso_dev->usb_gone)
2435 rv = 0;
2436 else
2437 rv = usb_control_msg(hso_dev->usb, usb_sndctrlpipe(hso_dev->usb, 0),
2438 enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
2439 USB_CTRL_SET_TIMEOUT);
2440 mutex_unlock(&hso_dev->mutex);
2441 return rv;
2442}
2443
2444static const struct rfkill_ops hso_rfkill_ops = {
2445 .set_block = hso_rfkill_set_block,
2446};
2447
2448
2449static void hso_create_rfkill(struct hso_device *hso_dev,
2450 struct usb_interface *interface)
2451{
2452 struct hso_net *hso_net = dev2net(hso_dev);
2453 struct device *dev = &hso_net->net->dev;
2454 static u32 rfkill_counter;
2455
2456 snprintf(hso_net->name, sizeof(hso_net->name), "hso-%d",
2457 rfkill_counter++);
2458
2459 hso_net->rfkill = rfkill_alloc(hso_net->name,
2460 &interface_to_usbdev(interface)->dev,
2461 RFKILL_TYPE_WWAN,
2462 &hso_rfkill_ops, hso_dev);
2463 if (!hso_net->rfkill)
2464 return;
2465
2466 if (rfkill_register(hso_net->rfkill) < 0) {
2467 rfkill_destroy(hso_net->rfkill);
2468 hso_net->rfkill = NULL;
2469 dev_err(dev, "%s - Failed to register rfkill\n", __func__);
2470 return;
2471 }
2472}
2473
2474static struct device_type hso_type = {
2475 .name = "wwan",
2476};
2477
2478
2479static struct hso_device *hso_create_net_device(struct usb_interface *interface,
2480 int port_spec)
2481{
2482 int result, i;
2483 struct net_device *net;
2484 struct hso_net *hso_net;
2485 struct hso_device *hso_dev;
2486
2487 hso_dev = hso_create_device(interface, port_spec);
2488 if (!hso_dev)
2489 return NULL;
2490
2491
2492
2493 net = alloc_netdev(sizeof(struct hso_net), "hso%d", NET_NAME_UNKNOWN,
2494 hso_net_init);
2495 if (!net) {
2496 dev_err(&interface->dev, "Unable to create ethernet device\n");
2497 goto err_hso_dev;
2498 }
2499
2500 hso_net = netdev_priv(net);
2501
2502 hso_dev->port_data.dev_net = hso_net;
2503 hso_net->net = net;
2504 hso_net->parent = hso_dev;
2505
2506 hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2507 USB_DIR_IN);
2508 if (!hso_net->in_endp) {
2509 dev_err(&interface->dev, "Can't find BULK IN endpoint\n");
2510 goto err_net;
2511 }
2512 hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2513 USB_DIR_OUT);
2514 if (!hso_net->out_endp) {
2515 dev_err(&interface->dev, "Can't find BULK OUT endpoint\n");
2516 goto err_net;
2517 }
2518 SET_NETDEV_DEV(net, &interface->dev);
2519 SET_NETDEV_DEVTYPE(net, &hso_type);
2520
2521
2522 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2523 hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL);
2524 if (!hso_net->mux_bulk_rx_urb_pool[i])
2525 goto err_mux_bulk_rx;
2526 hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE,
2527 GFP_KERNEL);
2528 if (!hso_net->mux_bulk_rx_buf_pool[i])
2529 goto err_mux_bulk_rx;
2530 }
2531 hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2532 if (!hso_net->mux_bulk_tx_urb)
2533 goto err_mux_bulk_rx;
2534 hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL);
2535 if (!hso_net->mux_bulk_tx_buf)
2536 goto err_free_tx_urb;
2537
2538 result = add_net_device(hso_dev);
2539 if (result) {
2540 dev_err(&interface->dev, "Failed to add net device\n");
2541 goto err_free_tx_buf;
2542 }
2543
2544
2545 result = register_netdev(net);
2546 if (result) {
2547 dev_err(&interface->dev, "Failed to register device\n");
2548 goto err_rmv_ndev;
2549 }
2550
2551 hso_log_port(hso_dev);
2552
2553 hso_create_rfkill(hso_dev, interface);
2554
2555 return hso_dev;
2556
2557err_rmv_ndev:
2558 remove_net_device(hso_dev);
2559err_free_tx_buf:
2560 kfree(hso_net->mux_bulk_tx_buf);
2561err_free_tx_urb:
2562 usb_free_urb(hso_net->mux_bulk_tx_urb);
2563err_mux_bulk_rx:
2564 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2565 usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2566 kfree(hso_net->mux_bulk_rx_buf_pool[i]);
2567 }
2568err_net:
2569 free_netdev(net);
2570err_hso_dev:
2571 kfree(hso_dev);
2572 return NULL;
2573}
2574
2575static void hso_free_tiomget(struct hso_serial *serial)
2576{
2577 struct hso_tiocmget *tiocmget;
2578 if (!serial)
2579 return;
2580 tiocmget = serial->tiocmget;
2581 if (tiocmget) {
2582 usb_free_urb(tiocmget->urb);
2583 tiocmget->urb = NULL;
2584 serial->tiocmget = NULL;
2585 kfree(tiocmget->serial_state_notification);
2586 tiocmget->serial_state_notification = NULL;
2587 kfree(tiocmget);
2588 }
2589}
2590
2591
2592static void hso_free_serial_device(struct hso_device *hso_dev)
2593{
2594 struct hso_serial *serial = dev2ser(hso_dev);
2595
2596 if (!serial)
2597 return;
2598
2599 hso_serial_common_free(serial);
2600
2601 if (serial->shared_int) {
2602 mutex_lock(&serial->shared_int->shared_int_lock);
2603 if (--serial->shared_int->ref_count == 0)
2604 hso_free_shared_int(serial->shared_int);
2605 else
2606 mutex_unlock(&serial->shared_int->shared_int_lock);
2607 }
2608 hso_free_tiomget(serial);
2609 kfree(serial);
2610 kfree(hso_dev);
2611}
2612
2613
2614static struct hso_device *hso_create_bulk_serial_device(
2615 struct usb_interface *interface, int port)
2616{
2617 struct hso_device *hso_dev;
2618 struct hso_serial *serial;
2619 int num_urbs;
2620 struct hso_tiocmget *tiocmget;
2621
2622 hso_dev = hso_create_device(interface, port);
2623 if (!hso_dev)
2624 return NULL;
2625
2626 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2627 if (!serial)
2628 goto exit;
2629
2630 serial->parent = hso_dev;
2631 hso_dev->port_data.dev_serial = serial;
2632
2633 if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
2634 num_urbs = 2;
2635 serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
2636 GFP_KERNEL);
2637 if (!serial->tiocmget)
2638 goto exit;
2639 serial->tiocmget->serial_state_notification
2640 = kzalloc(sizeof(struct hso_serial_state_notification),
2641 GFP_KERNEL);
2642 if (!serial->tiocmget->serial_state_notification)
2643 goto exit;
2644 tiocmget = serial->tiocmget;
2645 tiocmget->endp = hso_get_ep(interface,
2646 USB_ENDPOINT_XFER_INT,
2647 USB_DIR_IN);
2648 if (!tiocmget->endp) {
2649 dev_err(&interface->dev, "Failed to find INT IN ep\n");
2650 goto exit;
2651 }
2652
2653 tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
2654 if (!tiocmget->urb)
2655 goto exit;
2656
2657 mutex_init(&tiocmget->mutex);
2658 init_waitqueue_head(&tiocmget->waitq);
2659 } else {
2660 num_urbs = 1;
2661 }
2662
2663 if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE,
2664 BULK_URB_TX_SIZE))
2665 goto exit;
2666
2667 serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2668 USB_DIR_IN);
2669 if (!serial->in_endp) {
2670 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
2671 goto exit2;
2672 }
2673
2674 if (!
2675 (serial->out_endp =
2676 hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) {
2677 dev_err(&interface->dev, "Failed to find BULK OUT ep\n");
2678 goto exit2;
2679 }
2680
2681 serial->write_data = hso_std_serial_write_data;
2682
2683
2684 hso_log_port(hso_dev);
2685
2686
2687 return hso_dev;
2688
2689exit2:
2690 hso_serial_tty_unregister(serial);
2691 hso_serial_common_free(serial);
2692exit:
2693 hso_free_tiomget(serial);
2694 kfree(serial);
2695 kfree(hso_dev);
2696 return NULL;
2697}
2698
2699
2700static
2701struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
2702 int port,
2703 struct hso_shared_int *mux)
2704{
2705 struct hso_device *hso_dev;
2706 struct hso_serial *serial;
2707 int port_spec;
2708
2709 port_spec = HSO_INTF_MUX;
2710 port_spec &= ~HSO_PORT_MASK;
2711
2712 port_spec |= hso_mux_to_port(port);
2713 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT)
2714 return NULL;
2715
2716 hso_dev = hso_create_device(interface, port_spec);
2717 if (!hso_dev)
2718 return NULL;
2719
2720 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2721 if (!serial)
2722 goto err_free_dev;
2723
2724 hso_dev->port_data.dev_serial = serial;
2725 serial->parent = hso_dev;
2726
2727 if (hso_serial_common_create
2728 (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE))
2729 goto err_free_serial;
2730
2731 serial->tx_data_length--;
2732 serial->write_data = hso_mux_serial_write_data;
2733
2734 serial->shared_int = mux;
2735 mutex_lock(&serial->shared_int->shared_int_lock);
2736 serial->shared_int->ref_count++;
2737 mutex_unlock(&serial->shared_int->shared_int_lock);
2738
2739
2740 hso_log_port(hso_dev);
2741
2742
2743 return hso_dev;
2744
2745err_free_serial:
2746 kfree(serial);
2747err_free_dev:
2748 kfree(hso_dev);
2749 return NULL;
2750
2751}
2752
2753static void hso_free_shared_int(struct hso_shared_int *mux)
2754{
2755 usb_free_urb(mux->shared_intr_urb);
2756 kfree(mux->shared_intr_buf);
2757 mutex_unlock(&mux->shared_int_lock);
2758 kfree(mux);
2759}
2760
2761static
2762struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface)
2763{
2764 struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL);
2765
2766 if (!mux)
2767 return NULL;
2768
2769 mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT,
2770 USB_DIR_IN);
2771 if (!mux->intr_endp) {
2772 dev_err(&interface->dev, "Can't find INT IN endpoint\n");
2773 goto exit;
2774 }
2775
2776 mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL);
2777 if (!mux->shared_intr_urb)
2778 goto exit;
2779 mux->shared_intr_buf =
2780 kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize),
2781 GFP_KERNEL);
2782 if (!mux->shared_intr_buf)
2783 goto exit;
2784
2785 mutex_init(&mux->shared_int_lock);
2786
2787 return mux;
2788
2789exit:
2790 kfree(mux->shared_intr_buf);
2791 usb_free_urb(mux->shared_intr_urb);
2792 kfree(mux);
2793 return NULL;
2794}
2795
2796
2797static int hso_get_config_data(struct usb_interface *interface)
2798{
2799 struct usb_device *usbdev = interface_to_usbdev(interface);
2800 u8 *config_data = kmalloc(17, GFP_KERNEL);
2801 u32 if_num = interface->cur_altsetting->desc.bInterfaceNumber;
2802 s32 result;
2803
2804 if (!config_data)
2805 return -ENOMEM;
2806 if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
2807 0x86, 0xC0, 0, 0, config_data, 17,
2808 USB_CTRL_SET_TIMEOUT) != 0x11) {
2809 kfree(config_data);
2810 return -EIO;
2811 }
2812
2813
2814 if (if_num > 16) {
2815 kfree(config_data);
2816 return -EINVAL;
2817 }
2818
2819 switch (config_data[if_num]) {
2820 case 0x0:
2821 result = 0;
2822 break;
2823 case 0x1:
2824 result = HSO_PORT_DIAG;
2825 break;
2826 case 0x2:
2827 result = HSO_PORT_GPS;
2828 break;
2829 case 0x3:
2830 result = HSO_PORT_GPS_CONTROL;
2831 break;
2832 case 0x4:
2833 result = HSO_PORT_APP;
2834 break;
2835 case 0x5:
2836 result = HSO_PORT_APP2;
2837 break;
2838 case 0x6:
2839 result = HSO_PORT_CONTROL;
2840 break;
2841 case 0x7:
2842 result = HSO_PORT_NETWORK;
2843 break;
2844 case 0x8:
2845 result = HSO_PORT_MODEM;
2846 break;
2847 case 0x9:
2848 result = HSO_PORT_MSD;
2849 break;
2850 case 0xa:
2851 result = HSO_PORT_PCSC;
2852 break;
2853 case 0xb:
2854 result = HSO_PORT_VOICE;
2855 break;
2856 default:
2857 result = 0;
2858 }
2859
2860 if (result)
2861 result |= HSO_INTF_BULK;
2862
2863 if (config_data[16] & 0x1)
2864 result |= HSO_INFO_CRC_BUG;
2865
2866 kfree(config_data);
2867 return result;
2868}
2869
2870
2871static int hso_probe(struct usb_interface *interface,
2872 const struct usb_device_id *id)
2873{
2874 int mux, i, if_num, port_spec;
2875 unsigned char port_mask;
2876 struct hso_device *hso_dev = NULL;
2877 struct hso_shared_int *shared_int;
2878 struct hso_device *tmp_dev = NULL;
2879
2880 if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
2881 dev_err(&interface->dev, "Not our interface\n");
2882 return -ENODEV;
2883 }
2884
2885 if_num = interface->cur_altsetting->desc.bInterfaceNumber;
2886
2887
2888
2889 if (id->driver_info) {
2890
2891
2892 for (i = 0; i <= if_num; ++i)
2893 if (((u32 *)(id->driver_info))[i] == 0)
2894 goto exit;
2895 port_spec = ((u32 *)(id->driver_info))[if_num];
2896 } else {
2897 port_spec = hso_get_config_data(interface);
2898 if (port_spec < 0)
2899 goto exit;
2900 }
2901
2902
2903
2904 if (interface->num_altsetting > 1)
2905 usb_set_interface(interface_to_usbdev(interface), if_num, 1);
2906 interface->needs_remote_wakeup = 1;
2907
2908
2909 switch (port_spec & HSO_INTF_MASK) {
2910 case HSO_INTF_MUX:
2911 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2912
2913 if (!disable_net) {
2914 hso_dev = hso_create_net_device(interface,
2915 port_spec);
2916 if (!hso_dev)
2917 goto exit;
2918 tmp_dev = hso_dev;
2919 }
2920 }
2921
2922 if (hso_get_mux_ports(interface, &port_mask))
2923
2924 goto exit;
2925
2926 shared_int = hso_create_shared_int(interface);
2927 if (!shared_int)
2928 goto exit;
2929
2930 for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) {
2931 if (port_mask & i) {
2932 hso_dev = hso_create_mux_serial_device(
2933 interface, i, shared_int);
2934 if (!hso_dev)
2935 goto exit;
2936 }
2937 }
2938
2939 if (tmp_dev)
2940 hso_dev = tmp_dev;
2941 break;
2942
2943 case HSO_INTF_BULK:
2944
2945 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2946 if (!disable_net)
2947 hso_dev =
2948 hso_create_net_device(interface, port_spec);
2949 } else {
2950 hso_dev =
2951 hso_create_bulk_serial_device(interface, port_spec);
2952 }
2953 if (!hso_dev)
2954 goto exit;
2955 break;
2956 default:
2957 goto exit;
2958 }
2959
2960
2961 usb_set_intfdata(interface, hso_dev);
2962
2963
2964 return 0;
2965exit:
2966 hso_free_interface(interface);
2967 return -ENODEV;
2968}
2969
2970
2971static void hso_disconnect(struct usb_interface *interface)
2972{
2973 hso_free_interface(interface);
2974
2975
2976 usb_set_intfdata(interface, NULL);
2977}
2978
2979static void async_get_intf(struct work_struct *data)
2980{
2981 struct hso_device *hso_dev =
2982 container_of(data, struct hso_device, async_get_intf);
2983 usb_autopm_get_interface(hso_dev->interface);
2984}
2985
2986static void async_put_intf(struct work_struct *data)
2987{
2988 struct hso_device *hso_dev =
2989 container_of(data, struct hso_device, async_put_intf);
2990 usb_autopm_put_interface(hso_dev->interface);
2991}
2992
2993static int hso_get_activity(struct hso_device *hso_dev)
2994{
2995 if (hso_dev->usb->state == USB_STATE_SUSPENDED) {
2996 if (!hso_dev->is_active) {
2997 hso_dev->is_active = 1;
2998 schedule_work(&hso_dev->async_get_intf);
2999 }
3000 }
3001
3002 if (hso_dev->usb->state != USB_STATE_CONFIGURED)
3003 return -EAGAIN;
3004
3005 usb_mark_last_busy(hso_dev->usb);
3006
3007 return 0;
3008}
3009
3010static int hso_put_activity(struct hso_device *hso_dev)
3011{
3012 if (hso_dev->usb->state != USB_STATE_SUSPENDED) {
3013 if (hso_dev->is_active) {
3014 hso_dev->is_active = 0;
3015 schedule_work(&hso_dev->async_put_intf);
3016 return -EAGAIN;
3017 }
3018 }
3019 hso_dev->is_active = 0;
3020 return 0;
3021}
3022
3023
3024static int hso_suspend(struct usb_interface *iface, pm_message_t message)
3025{
3026 int i, result;
3027
3028
3029 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3030 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3031 result = hso_stop_serial_device(serial_table[i]);
3032 if (result)
3033 goto out;
3034 }
3035 }
3036
3037
3038 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3039 if (network_table[i] &&
3040 (network_table[i]->interface == iface)) {
3041 result = hso_stop_net_device(network_table[i]);
3042 if (result)
3043 goto out;
3044 }
3045 }
3046
3047out:
3048 return 0;
3049}
3050
3051
3052static int hso_resume(struct usb_interface *iface)
3053{
3054 int i, result = 0;
3055 struct hso_net *hso_net;
3056
3057
3058 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3059 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3060 if (dev2ser(serial_table[i])->port.count) {
3061 result =
3062 hso_start_serial_device(serial_table[i], GFP_NOIO);
3063 hso_kick_transmit(dev2ser(serial_table[i]));
3064 if (result)
3065 goto out;
3066 }
3067 }
3068 }
3069
3070
3071 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3072 if (network_table[i] &&
3073 (network_table[i]->interface == iface)) {
3074 hso_net = dev2net(network_table[i]);
3075 if (hso_net->flags & IFF_UP) {
3076
3077
3078 if (hso_net->skb_tx_buf) {
3079 dev_dbg(&iface->dev,
3080 "Transmitting"
3081 " lingering data\n");
3082 hso_net_start_xmit(hso_net->skb_tx_buf,
3083 hso_net->net);
3084 hso_net->skb_tx_buf = NULL;
3085 }
3086 result = hso_start_net_device(network_table[i]);
3087 if (result)
3088 goto out;
3089 }
3090 }
3091 }
3092
3093out:
3094 return result;
3095}
3096
3097static void hso_serial_ref_free(struct kref *ref)
3098{
3099 struct hso_device *hso_dev = container_of(ref, struct hso_device, ref);
3100
3101 hso_free_serial_device(hso_dev);
3102}
3103
3104static void hso_free_interface(struct usb_interface *interface)
3105{
3106 struct hso_serial *serial;
3107 int i;
3108
3109 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3110 if (serial_table[i] &&
3111 (serial_table[i]->interface == interface)) {
3112 serial = dev2ser(serial_table[i]);
3113 tty_port_tty_hangup(&serial->port, false);
3114 mutex_lock(&serial->parent->mutex);
3115 serial->parent->usb_gone = 1;
3116 mutex_unlock(&serial->parent->mutex);
3117 cancel_work_sync(&serial_table[i]->async_put_intf);
3118 cancel_work_sync(&serial_table[i]->async_get_intf);
3119 hso_serial_tty_unregister(serial);
3120 kref_put(&serial->parent->ref, hso_serial_ref_free);
3121 }
3122 }
3123
3124 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3125 if (network_table[i] &&
3126 (network_table[i]->interface == interface)) {
3127 struct rfkill *rfk = dev2net(network_table[i])->rfkill;
3128
3129
3130 netif_stop_queue(dev2net(network_table[i])->net);
3131 hso_stop_net_device(network_table[i]);
3132 cancel_work_sync(&network_table[i]->async_put_intf);
3133 cancel_work_sync(&network_table[i]->async_get_intf);
3134 if (rfk) {
3135 rfkill_unregister(rfk);
3136 rfkill_destroy(rfk);
3137 }
3138 hso_free_net_device(network_table[i]);
3139 }
3140 }
3141}
3142
3143
3144
3145
3146static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
3147 int type, int dir)
3148{
3149 int i;
3150 struct usb_host_interface *iface = intf->cur_altsetting;
3151 struct usb_endpoint_descriptor *endp;
3152
3153 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3154 endp = &iface->endpoint[i].desc;
3155 if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) &&
3156 (usb_endpoint_type(endp) == type))
3157 return endp;
3158 }
3159
3160 return NULL;
3161}
3162
3163
3164static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports)
3165{
3166 int i;
3167 struct usb_host_interface *iface = intf->cur_altsetting;
3168
3169 if (iface->extralen == 3) {
3170 *ports = iface->extra[2];
3171 return 0;
3172 }
3173
3174 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3175 if (iface->endpoint[i].extralen == 3) {
3176 *ports = iface->endpoint[i].extra[2];
3177 return 0;
3178 }
3179 }
3180
3181 return -1;
3182}
3183
3184
3185static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int,
3186 struct usb_device *usb, gfp_t gfp)
3187{
3188 int result;
3189
3190 usb_fill_int_urb(shared_int->shared_intr_urb, usb,
3191 usb_rcvintpipe(usb,
3192 shared_int->intr_endp->bEndpointAddress & 0x7F),
3193 shared_int->shared_intr_buf,
3194 1,
3195 intr_callback, shared_int,
3196 shared_int->intr_endp->bInterval);
3197
3198 result = usb_submit_urb(shared_int->shared_intr_urb, gfp);
3199 if (result)
3200 dev_warn(&usb->dev, "%s failed mux_intr_urb %d\n", __func__,
3201 result);
3202
3203 return result;
3204}
3205
3206
3207static const struct tty_operations hso_serial_ops = {
3208 .open = hso_serial_open,
3209 .close = hso_serial_close,
3210 .write = hso_serial_write,
3211 .write_room = hso_serial_write_room,
3212 .cleanup = hso_serial_cleanup,
3213 .ioctl = hso_serial_ioctl,
3214 .set_termios = hso_serial_set_termios,
3215 .chars_in_buffer = hso_serial_chars_in_buffer,
3216 .tiocmget = hso_serial_tiocmget,
3217 .tiocmset = hso_serial_tiocmset,
3218 .get_icount = hso_get_count,
3219 .unthrottle = hso_unthrottle
3220};
3221
3222static struct usb_driver hso_driver = {
3223 .name = driver_name,
3224 .probe = hso_probe,
3225 .disconnect = hso_disconnect,
3226 .id_table = hso_ids,
3227 .suspend = hso_suspend,
3228 .resume = hso_resume,
3229 .reset_resume = hso_resume,
3230 .supports_autosuspend = 1,
3231 .disable_hub_initiated_lpm = 1,
3232};
3233
3234static int __init hso_init(void)
3235{
3236 int i;
3237 int result;
3238
3239
3240 pr_info("%s\n", version);
3241
3242
3243 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++)
3244 serial_table[i] = NULL;
3245
3246
3247 tty_drv = tty_alloc_driver(HSO_SERIAL_TTY_MINORS, TTY_DRIVER_REAL_RAW |
3248 TTY_DRIVER_DYNAMIC_DEV);
3249 if (IS_ERR(tty_drv))
3250 return PTR_ERR(tty_drv);
3251
3252
3253 tty_drv->driver_name = driver_name;
3254 tty_drv->name = tty_filename;
3255
3256
3257 if (tty_major)
3258 tty_drv->major = tty_major;
3259
3260 tty_drv->minor_start = 0;
3261 tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
3262 tty_drv->subtype = SERIAL_TYPE_NORMAL;
3263 tty_drv->init_termios = tty_std_termios;
3264 hso_init_termios(&tty_drv->init_termios);
3265 tty_set_operations(tty_drv, &hso_serial_ops);
3266
3267
3268 result = tty_register_driver(tty_drv);
3269 if (result) {
3270 pr_err("%s - tty_register_driver failed(%d)\n",
3271 __func__, result);
3272 goto err_free_tty;
3273 }
3274
3275
3276 result = usb_register(&hso_driver);
3277 if (result) {
3278 pr_err("Could not register hso driver - error: %d\n", result);
3279 goto err_unreg_tty;
3280 }
3281
3282
3283 return 0;
3284err_unreg_tty:
3285 tty_unregister_driver(tty_drv);
3286err_free_tty:
3287 tty_driver_kref_put(tty_drv);
3288 return result;
3289}
3290
3291static void __exit hso_exit(void)
3292{
3293 pr_info("unloaded\n");
3294
3295 tty_unregister_driver(tty_drv);
3296
3297 usb_deregister(&hso_driver);
3298 tty_driver_kref_put(tty_drv);
3299}
3300
3301
3302module_init(hso_init);
3303module_exit(hso_exit);
3304
3305MODULE_AUTHOR(MOD_AUTHOR);
3306MODULE_DESCRIPTION(MOD_DESCRIPTION);
3307MODULE_LICENSE("GPL");
3308
3309
3310MODULE_PARM_DESC(debug, "debug level mask [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
3311module_param(debug, int, 0644);
3312
3313
3314MODULE_PARM_DESC(tty_major, "Set the major tty number");
3315module_param(tty_major, int, 0644);
3316
3317
3318MODULE_PARM_DESC(disable_net, "Disable the network interface");
3319module_param(disable_net, int, 0644);
3320
