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52
53#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
54
55#include <linux/sched/signal.h>
56#include <linux/slab.h>
57#include <linux/init.h>
58#include <linux/delay.h>
59#include <linux/netdevice.h>
60#include <linux/module.h>
61#include <linux/ethtool.h>
62#include <linux/usb.h>
63#include <linux/tty.h>
64#include <linux/tty_driver.h>
65#include <linux/tty_flip.h>
66#include <linux/kmod.h>
67#include <linux/rfkill.h>
68#include <linux/ip.h>
69#include <linux/uaccess.h>
70#include <linux/usb/cdc.h>
71#include <net/arp.h>
72#include <asm/byteorder.h>
73#include <linux/serial_core.h>
74#include <linux/serial.h>
75
76
77#define MOD_AUTHOR "Option Wireless"
78#define MOD_DESCRIPTION "USB High Speed Option driver"
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
97
98#define HSO_NET_RUNNING 0
99
100#define HSO_NET_TX_TIMEOUT (HZ*10)
101
102#define HSO_SERIAL_MAGIC 0x48534f31
103
104
105#define HSO_SERIAL_TTY_MINORS 256
106
107#define MAX_RX_URBS 2
108
109
110
111
112#define hso_dbg(lvl, fmt, ...) \
113do { \
114 if ((lvl) & debug) \
115 pr_info("[%d:%s] " fmt, \
116 __LINE__, __func__, ##__VA_ARGS__); \
117} while (0)
118
119
120
121
122enum pkt_parse_state {
123 WAIT_IP,
124 WAIT_DATA,
125 WAIT_SYNC
126};
127
128
129
130
131
132struct hso_shared_int {
133 struct usb_endpoint_descriptor *intr_endp;
134 void *shared_intr_buf;
135 struct urb *shared_intr_urb;
136 struct usb_device *usb;
137 int use_count;
138 int ref_count;
139 struct mutex shared_int_lock;
140};
141
142struct hso_net {
143 struct hso_device *parent;
144 struct net_device *net;
145 struct rfkill *rfkill;
146 char name[24];
147
148 struct usb_endpoint_descriptor *in_endp;
149 struct usb_endpoint_descriptor *out_endp;
150
151 struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT];
152 struct urb *mux_bulk_tx_urb;
153 void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT];
154 void *mux_bulk_tx_buf;
155
156 struct sk_buff *skb_rx_buf;
157 struct sk_buff *skb_tx_buf;
158
159 enum pkt_parse_state rx_parse_state;
160 spinlock_t net_lock;
161
162 unsigned short rx_buf_size;
163 unsigned short rx_buf_missing;
164 struct iphdr rx_ip_hdr;
165
166 unsigned long flags;
167};
168
169enum rx_ctrl_state{
170 RX_IDLE,
171 RX_SENT,
172 RX_PENDING
173};
174
175#define BM_REQUEST_TYPE (0xa1)
176#define B_NOTIFICATION (0x20)
177#define W_VALUE (0x0)
178#define W_LENGTH (0x2)
179
180#define B_OVERRUN (0x1<<6)
181#define B_PARITY (0x1<<5)
182#define B_FRAMING (0x1<<4)
183#define B_RING_SIGNAL (0x1<<3)
184#define B_BREAK (0x1<<2)
185#define B_TX_CARRIER (0x1<<1)
186#define B_RX_CARRIER (0x1<<0)
187
188struct hso_serial_state_notification {
189 u8 bmRequestType;
190 u8 bNotification;
191 u16 wValue;
192 u16 wIndex;
193 u16 wLength;
194 u16 UART_state_bitmap;
195} __packed;
196
197struct hso_tiocmget {
198 struct mutex mutex;
199 wait_queue_head_t waitq;
200 int intr_completed;
201 struct usb_endpoint_descriptor *endp;
202 struct urb *urb;
203 struct hso_serial_state_notification serial_state_notification;
204 u16 prev_UART_state_bitmap;
205 struct uart_icount icount;
206};
207
208
209struct hso_serial {
210 struct hso_device *parent;
211 int magic;
212 u8 minor;
213
214 struct hso_shared_int *shared_int;
215
216
217
218 struct urb *rx_urb[MAX_RX_URBS];
219 u8 num_rx_urbs;
220 u8 *rx_data[MAX_RX_URBS];
221 u16 rx_data_length;
222
223 struct urb *tx_urb;
224 u8 *tx_data;
225 u8 *tx_buffer;
226 u16 tx_data_length;
227 u16 tx_data_count;
228 u16 tx_buffer_count;
229 struct usb_ctrlrequest ctrl_req_tx;
230 struct usb_ctrlrequest ctrl_req_rx;
231
232 struct usb_endpoint_descriptor *in_endp;
233 struct usb_endpoint_descriptor *out_endp;
234
235 enum rx_ctrl_state rx_state;
236 u8 rts_state;
237 u8 dtr_state;
238 unsigned tx_urb_used:1;
239
240 struct tty_port port;
241
242 spinlock_t serial_lock;
243
244 int (*write_data) (struct hso_serial *serial);
245 struct hso_tiocmget *tiocmget;
246
247
248
249
250 int curr_rx_urb_idx;
251 u8 rx_urb_filled[MAX_RX_URBS];
252 struct tasklet_struct unthrottle_tasklet;
253};
254
255struct hso_device {
256 union {
257 struct hso_serial *dev_serial;
258 struct hso_net *dev_net;
259 } port_data;
260
261 u32 port_spec;
262
263 u8 is_active;
264 u8 usb_gone;
265 struct work_struct async_get_intf;
266 struct work_struct async_put_intf;
267
268 struct usb_device *usb;
269 struct usb_interface *interface;
270
271 struct device *dev;
272 struct kref ref;
273 struct mutex mutex;
274};
275
276
277#define HSO_INTF_MASK 0xFF00
278#define HSO_INTF_MUX 0x0100
279#define HSO_INTF_BULK 0x0200
280
281
282#define HSO_PORT_MASK 0xFF
283#define HSO_PORT_NO_PORT 0x0
284#define HSO_PORT_CONTROL 0x1
285#define HSO_PORT_APP 0x2
286#define HSO_PORT_GPS 0x3
287#define HSO_PORT_PCSC 0x4
288#define HSO_PORT_APP2 0x5
289#define HSO_PORT_GPS_CONTROL 0x6
290#define HSO_PORT_MSD 0x7
291#define HSO_PORT_VOICE 0x8
292#define HSO_PORT_DIAG2 0x9
293#define HSO_PORT_DIAG 0x10
294#define HSO_PORT_MODEM 0x11
295#define HSO_PORT_NETWORK 0x12
296
297
298#define HSO_INFO_MASK 0xFF000000
299#define HSO_INFO_CRC_BUG 0x01000000
300
301
302
303
304
305static int hso_serial_tiocmset(struct tty_struct *tty,
306 unsigned int set, unsigned int clear);
307static void ctrl_callback(struct urb *urb);
308static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial);
309static void hso_kick_transmit(struct hso_serial *serial);
310
311static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int,
312 struct usb_device *usb, gfp_t gfp);
313static void handle_usb_error(int status, const char *function,
314 struct hso_device *hso_dev);
315static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
316 int type, int dir);
317static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports);
318static void hso_free_interface(struct usb_interface *intf);
319static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags);
320static int hso_stop_serial_device(struct hso_device *hso_dev);
321static int hso_start_net_device(struct hso_device *hso_dev);
322static void hso_free_shared_int(struct hso_shared_int *shared_int);
323static int hso_stop_net_device(struct hso_device *hso_dev);
324static void hso_serial_ref_free(struct kref *ref);
325static void hso_std_serial_read_bulk_callback(struct urb *urb);
326static int hso_mux_serial_read(struct hso_serial *serial);
327static void async_get_intf(struct work_struct *data);
328static void async_put_intf(struct work_struct *data);
329static int hso_put_activity(struct hso_device *hso_dev);
330static int hso_get_activity(struct hso_device *hso_dev);
331static void tiocmget_intr_callback(struct urb *urb);
332
333
334
335
336
337
338static inline struct hso_net *dev2net(struct hso_device *hso_dev)
339{
340 return hso_dev->port_data.dev_net;
341}
342
343static inline struct hso_serial *dev2ser(struct hso_device *hso_dev)
344{
345 return hso_dev->port_data.dev_serial;
346}
347
348
349#ifdef DEBUG
350static void dbg_dump(int line_count, const char *func_name, unsigned char *buf,
351 unsigned int len)
352{
353 static char name[255];
354
355 sprintf(name, "hso[%d:%s]", line_count, func_name);
356 print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len);
357}
358
359#define DUMP(buf_, len_) \
360 dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_)
361
362#define DUMP1(buf_, len_) \
363 do { \
364 if (0x01 & debug) \
365 DUMP(buf_, len_); \
366 } while (0)
367#else
368#define DUMP(buf_, len_)
369#define DUMP1(buf_, len_)
370#endif
371
372
373static int debug;
374static int tty_major;
375static int disable_net;
376
377
378static const char driver_name[] = "hso";
379static const char tty_filename[] = "ttyHS";
380static const char *version = __FILE__ ": " MOD_AUTHOR;
381
382static struct usb_driver hso_driver;
383
384static struct tty_driver *tty_drv;
385static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS];
386static struct hso_device *network_table[HSO_MAX_NET_DEVICES];
387static spinlock_t serial_table_lock;
388
389static const s32 default_port_spec[] = {
390 HSO_INTF_MUX | HSO_PORT_NETWORK,
391 HSO_INTF_BULK | HSO_PORT_DIAG,
392 HSO_INTF_BULK | HSO_PORT_MODEM,
393 0
394};
395
396static const s32 icon321_port_spec[] = {
397 HSO_INTF_MUX | HSO_PORT_NETWORK,
398 HSO_INTF_BULK | HSO_PORT_DIAG2,
399 HSO_INTF_BULK | HSO_PORT_MODEM,
400 HSO_INTF_BULK | HSO_PORT_DIAG,
401 0
402};
403
404#define default_port_device(vendor, product) \
405 USB_DEVICE(vendor, product), \
406 .driver_info = (kernel_ulong_t)default_port_spec
407
408#define icon321_port_device(vendor, product) \
409 USB_DEVICE(vendor, product), \
410 .driver_info = (kernel_ulong_t)icon321_port_spec
411
412
413static const struct usb_device_id hso_ids[] = {
414 {default_port_device(0x0af0, 0x6711)},
415 {default_port_device(0x0af0, 0x6731)},
416 {default_port_device(0x0af0, 0x6751)},
417 {default_port_device(0x0af0, 0x6771)},
418 {default_port_device(0x0af0, 0x6791)},
419 {default_port_device(0x0af0, 0x6811)},
420 {default_port_device(0x0af0, 0x6911)},
421 {default_port_device(0x0af0, 0x6951)},
422 {default_port_device(0x0af0, 0x6971)},
423 {default_port_device(0x0af0, 0x7011)},
424 {default_port_device(0x0af0, 0x7031)},
425 {default_port_device(0x0af0, 0x7051)},
426 {default_port_device(0x0af0, 0x7071)},
427 {default_port_device(0x0af0, 0x7111)},
428 {default_port_device(0x0af0, 0x7211)},
429 {default_port_device(0x0af0, 0x7251)},
430 {default_port_device(0x0af0, 0x7271)},
431 {default_port_device(0x0af0, 0x7311)},
432 {default_port_device(0x0af0, 0xc031)},
433 {icon321_port_device(0x0af0, 0xd013)},
434 {icon321_port_device(0x0af0, 0xd031)},
435 {icon321_port_device(0x0af0, 0xd033)},
436 {USB_DEVICE(0x0af0, 0x7301)},
437 {USB_DEVICE(0x0af0, 0x7361)},
438 {USB_DEVICE(0x0af0, 0x7381)},
439 {USB_DEVICE(0x0af0, 0x7401)},
440 {USB_DEVICE(0x0af0, 0x7501)},
441 {USB_DEVICE(0x0af0, 0x7601)},
442 {USB_DEVICE(0x0af0, 0x7701)},
443 {USB_DEVICE(0x0af0, 0x7706)},
444 {USB_DEVICE(0x0af0, 0x7801)},
445 {USB_DEVICE(0x0af0, 0x7901)},
446 {USB_DEVICE(0x0af0, 0x7A01)},
447 {USB_DEVICE(0x0af0, 0x7A05)},
448 {USB_DEVICE(0x0af0, 0x8200)},
449 {USB_DEVICE(0x0af0, 0x8201)},
450 {USB_DEVICE(0x0af0, 0x8300)},
451 {USB_DEVICE(0x0af0, 0x8302)},
452 {USB_DEVICE(0x0af0, 0x8304)},
453 {USB_DEVICE(0x0af0, 0x8400)},
454 {USB_DEVICE(0x0af0, 0x8600)},
455 {USB_DEVICE(0x0af0, 0x8800)},
456 {USB_DEVICE(0x0af0, 0x8900)},
457 {USB_DEVICE(0x0af0, 0x9000)},
458 {USB_DEVICE(0x0af0, 0x9200)},
459 {USB_DEVICE(0x0af0, 0xd035)},
460 {USB_DEVICE(0x0af0, 0xd055)},
461 {USB_DEVICE(0x0af0, 0xd155)},
462 {USB_DEVICE(0x0af0, 0xd255)},
463 {USB_DEVICE(0x0af0, 0xd057)},
464 {USB_DEVICE(0x0af0, 0xd157)},
465 {USB_DEVICE(0x0af0, 0xd257)},
466 {USB_DEVICE(0x0af0, 0xd357)},
467 {USB_DEVICE(0x0af0, 0xd058)},
468 {USB_DEVICE(0x0af0, 0xc100)},
469 {}
470};
471MODULE_DEVICE_TABLE(usb, hso_ids);
472
473
474static ssize_t hso_sysfs_show_porttype(struct device *dev,
475 struct device_attribute *attr,
476 char *buf)
477{
478 struct hso_device *hso_dev = dev_get_drvdata(dev);
479 char *port_name;
480
481 if (!hso_dev)
482 return 0;
483
484 switch (hso_dev->port_spec & HSO_PORT_MASK) {
485 case HSO_PORT_CONTROL:
486 port_name = "Control";
487 break;
488 case HSO_PORT_APP:
489 port_name = "Application";
490 break;
491 case HSO_PORT_APP2:
492 port_name = "Application2";
493 break;
494 case HSO_PORT_GPS:
495 port_name = "GPS";
496 break;
497 case HSO_PORT_GPS_CONTROL:
498 port_name = "GPS Control";
499 break;
500 case HSO_PORT_PCSC:
501 port_name = "PCSC";
502 break;
503 case HSO_PORT_DIAG:
504 port_name = "Diagnostic";
505 break;
506 case HSO_PORT_DIAG2:
507 port_name = "Diagnostic2";
508 break;
509 case HSO_PORT_MODEM:
510 port_name = "Modem";
511 break;
512 case HSO_PORT_NETWORK:
513 port_name = "Network";
514 break;
515 default:
516 port_name = "Unknown";
517 break;
518 }
519
520 return sprintf(buf, "%s\n", port_name);
521}
522static DEVICE_ATTR(hsotype, 0444, hso_sysfs_show_porttype, NULL);
523
524static struct attribute *hso_serial_dev_attrs[] = {
525 &dev_attr_hsotype.attr,
526 NULL
527};
528
529ATTRIBUTE_GROUPS(hso_serial_dev);
530
531static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb)
532{
533 int idx;
534
535 for (idx = 0; idx < serial->num_rx_urbs; idx++)
536 if (serial->rx_urb[idx] == urb)
537 return idx;
538 dev_err(serial->parent->dev, "hso_urb_to_index failed\n");
539 return -1;
540}
541
542
543static u32 hso_mux_to_port(int mux)
544{
545 u32 result;
546
547 switch (mux) {
548 case 0x1:
549 result = HSO_PORT_CONTROL;
550 break;
551 case 0x2:
552 result = HSO_PORT_APP;
553 break;
554 case 0x4:
555 result = HSO_PORT_PCSC;
556 break;
557 case 0x8:
558 result = HSO_PORT_GPS;
559 break;
560 case 0x10:
561 result = HSO_PORT_APP2;
562 break;
563 default:
564 result = HSO_PORT_NO_PORT;
565 }
566 return result;
567}
568
569
570static u32 hso_port_to_mux(int port)
571{
572 u32 result;
573
574 switch (port & HSO_PORT_MASK) {
575 case HSO_PORT_CONTROL:
576 result = 0x0;
577 break;
578 case HSO_PORT_APP:
579 result = 0x1;
580 break;
581 case HSO_PORT_PCSC:
582 result = 0x2;
583 break;
584 case HSO_PORT_GPS:
585 result = 0x3;
586 break;
587 case HSO_PORT_APP2:
588 result = 0x4;
589 break;
590 default:
591 result = 0x0;
592 }
593 return result;
594}
595
596static struct hso_serial *get_serial_by_shared_int_and_type(
597 struct hso_shared_int *shared_int,
598 int mux)
599{
600 int i, port;
601
602 port = hso_mux_to_port(mux);
603
604 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
605 if (serial_table[i] &&
606 (dev2ser(serial_table[i])->shared_int == shared_int) &&
607 ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) {
608 return dev2ser(serial_table[i]);
609 }
610 }
611
612 return NULL;
613}
614
615static struct hso_serial *get_serial_by_index(unsigned index)
616{
617 struct hso_serial *serial = NULL;
618 unsigned long flags;
619
620 spin_lock_irqsave(&serial_table_lock, flags);
621 if (serial_table[index])
622 serial = dev2ser(serial_table[index]);
623 spin_unlock_irqrestore(&serial_table_lock, flags);
624
625 return serial;
626}
627
628static int get_free_serial_index(void)
629{
630 int index;
631 unsigned long flags;
632
633 spin_lock_irqsave(&serial_table_lock, flags);
634 for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) {
635 if (serial_table[index] == NULL) {
636 spin_unlock_irqrestore(&serial_table_lock, flags);
637 return index;
638 }
639 }
640 spin_unlock_irqrestore(&serial_table_lock, flags);
641
642 pr_err("%s: no free serial devices in table\n", __func__);
643 return -1;
644}
645
646static void set_serial_by_index(unsigned index, struct hso_serial *serial)
647{
648 unsigned long flags;
649
650 spin_lock_irqsave(&serial_table_lock, flags);
651 if (serial)
652 serial_table[index] = serial->parent;
653 else
654 serial_table[index] = NULL;
655 spin_unlock_irqrestore(&serial_table_lock, flags);
656}
657
658static void handle_usb_error(int status, const char *function,
659 struct hso_device *hso_dev)
660{
661 char *explanation;
662
663 switch (status) {
664 case -ENODEV:
665 explanation = "no device";
666 break;
667 case -ENOENT:
668 explanation = "endpoint not enabled";
669 break;
670 case -EPIPE:
671 explanation = "endpoint stalled";
672 break;
673 case -ENOSPC:
674 explanation = "not enough bandwidth";
675 break;
676 case -ESHUTDOWN:
677 explanation = "device disabled";
678 break;
679 case -EHOSTUNREACH:
680 explanation = "device suspended";
681 break;
682 case -EINVAL:
683 case -EAGAIN:
684 case -EFBIG:
685 case -EMSGSIZE:
686 explanation = "internal error";
687 break;
688 case -EILSEQ:
689 case -EPROTO:
690 case -ETIME:
691 case -ETIMEDOUT:
692 explanation = "protocol error";
693 if (hso_dev)
694 usb_queue_reset_device(hso_dev->interface);
695 break;
696 default:
697 explanation = "unknown status";
698 break;
699 }
700
701
702 hso_dbg(0x1, "%s: received USB status - %s (%d)\n",
703 function, explanation, status);
704}
705
706
707
708
709static int hso_net_open(struct net_device *net)
710{
711 struct hso_net *odev = netdev_priv(net);
712 unsigned long flags = 0;
713
714 if (!odev) {
715 dev_err(&net->dev, "No net device !\n");
716 return -ENODEV;
717 }
718
719 odev->skb_tx_buf = NULL;
720
721
722 spin_lock_irqsave(&odev->net_lock, flags);
723 odev->rx_parse_state = WAIT_IP;
724 odev->rx_buf_size = 0;
725 odev->rx_buf_missing = sizeof(struct iphdr);
726 spin_unlock_irqrestore(&odev->net_lock, flags);
727
728
729 set_bit(HSO_NET_RUNNING, &odev->flags);
730 hso_start_net_device(odev->parent);
731
732
733 netif_start_queue(net);
734
735 return 0;
736}
737
738
739static int hso_net_close(struct net_device *net)
740{
741 struct hso_net *odev = netdev_priv(net);
742
743
744 netif_stop_queue(net);
745
746 clear_bit(HSO_NET_RUNNING, &odev->flags);
747
748 hso_stop_net_device(odev->parent);
749
750
751 return 0;
752}
753
754
755static void write_bulk_callback(struct urb *urb)
756{
757 struct hso_net *odev = urb->context;
758 int status = urb->status;
759
760
761 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
762 dev_err(&urb->dev->dev, "%s: device not running\n", __func__);
763 return;
764 }
765
766
767 if (!netif_device_present(odev->net)) {
768 dev_err(&urb->dev->dev, "%s: net device not present\n",
769 __func__);
770 return;
771 }
772
773
774
775 if (status)
776 handle_usb_error(status, __func__, odev->parent);
777
778 hso_put_activity(odev->parent);
779
780
781 netif_wake_queue(odev->net);
782}
783
784
785static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb,
786 struct net_device *net)
787{
788 struct hso_net *odev = netdev_priv(net);
789 int result;
790
791
792 netif_stop_queue(net);
793 if (hso_get_activity(odev->parent) == -EAGAIN) {
794 odev->skb_tx_buf = skb;
795 return NETDEV_TX_OK;
796 }
797
798
799 DUMP1(skb->data, skb->len);
800
801 memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len);
802 hso_dbg(0x1, "len: %d/%d\n", skb->len, MUX_BULK_TX_BUF_SIZE);
803
804
805 usb_fill_bulk_urb(odev->mux_bulk_tx_urb,
806 odev->parent->usb,
807 usb_sndbulkpipe(odev->parent->usb,
808 odev->out_endp->
809 bEndpointAddress & 0x7F),
810 odev->mux_bulk_tx_buf, skb->len, write_bulk_callback,
811 odev);
812
813
814 odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET;
815
816
817 result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC);
818 if (result) {
819 dev_warn(&odev->parent->interface->dev,
820 "failed mux_bulk_tx_urb %d\n", result);
821 net->stats.tx_errors++;
822 netif_start_queue(net);
823 } else {
824 net->stats.tx_packets++;
825 net->stats.tx_bytes += skb->len;
826 }
827 dev_kfree_skb(skb);
828
829 return NETDEV_TX_OK;
830}
831
832static const struct ethtool_ops ops = {
833 .get_link = ethtool_op_get_link
834};
835
836
837static void hso_net_tx_timeout(struct net_device *net)
838{
839 struct hso_net *odev = netdev_priv(net);
840
841 if (!odev)
842 return;
843
844
845 dev_warn(&net->dev, "Tx timed out.\n");
846
847
848 if (odev->mux_bulk_tx_urb &&
849 (odev->mux_bulk_tx_urb->status == -EINPROGRESS))
850 usb_unlink_urb(odev->mux_bulk_tx_urb);
851
852
853 net->stats.tx_errors++;
854}
855
856
857static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt,
858 unsigned int count, unsigned char is_eop)
859{
860 unsigned short temp_bytes;
861 unsigned short buffer_offset = 0;
862 unsigned short frame_len;
863
864
865 hso_dbg(0x1, "Rx %d bytes\n", count);
866 DUMP(ip_pkt, min(128, (int)count));
867
868 while (count) {
869 switch (odev->rx_parse_state) {
870 case WAIT_IP:
871
872
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
889
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
901 odev->skb_rx_buf = netdev_alloc_skb(odev->net,
902 frame_len);
903 if (!odev->skb_rx_buf) {
904
905 hso_dbg(0x1, "could not allocate memory\n");
906 odev->rx_parse_state = WAIT_SYNC;
907 continue;
908 }
909
910
911
912 skb_put_data(odev->skb_rx_buf,
913 (char *)&(odev->rx_ip_hdr),
914 sizeof(struct iphdr));
915
916
917 odev->rx_buf_size = sizeof(struct iphdr);
918
919
920 odev->rx_buf_missing =
921 frame_len - sizeof(struct iphdr);
922 odev->rx_parse_state = WAIT_DATA;
923 }
924 break;
925
926 case WAIT_DATA:
927 temp_bytes = (count < odev->rx_buf_missing)
928 ? count : odev->rx_buf_missing;
929
930
931
932
933 skb_put_data(odev->skb_rx_buf,
934 ip_pkt + buffer_offset,
935 temp_bytes);
936
937 odev->rx_buf_missing -= temp_bytes;
938 count -= temp_bytes;
939 buffer_offset += temp_bytes;
940 odev->rx_buf_size += temp_bytes;
941 if (!odev->rx_buf_missing) {
942
943
944 odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP);
945 skb_reset_mac_header(odev->skb_rx_buf);
946
947
948 netif_rx(odev->skb_rx_buf);
949
950 odev->skb_rx_buf = NULL;
951
952
953 odev->net->stats.rx_packets++;
954
955 odev->net->stats.rx_bytes += odev->rx_buf_size;
956
957 odev->rx_buf_size = 0;
958 odev->rx_buf_missing = sizeof(struct iphdr);
959 odev->rx_parse_state = WAIT_IP;
960 }
961 break;
962
963 case WAIT_SYNC:
964 hso_dbg(0x1, " W_S\n");
965 count = 0;
966 break;
967 default:
968 hso_dbg(0x1, "\n");
969 count--;
970 break;
971 }
972 }
973
974
975 if (is_eop) {
976 if (odev->rx_parse_state == WAIT_SYNC) {
977 odev->rx_parse_state = WAIT_IP;
978 odev->rx_buf_size = 0;
979 odev->rx_buf_missing = sizeof(struct iphdr);
980 }
981 }
982}
983
984static void fix_crc_bug(struct urb *urb, __le16 max_packet_size)
985{
986 static const u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
987 u32 rest = urb->actual_length % le16_to_cpu(max_packet_size);
988
989 if (((rest == 5) || (rest == 6)) &&
990 !memcmp(((u8 *)urb->transfer_buffer) + urb->actual_length - 4,
991 crc_check, 4)) {
992 urb->actual_length -= 4;
993 }
994}
995
996
997static void read_bulk_callback(struct urb *urb)
998{
999 struct hso_net *odev = urb->context;
1000 struct net_device *net;
1001 int result;
1002 int status = urb->status;
1003
1004
1005 if (status) {
1006 handle_usb_error(status, __func__, odev->parent);
1007 return;
1008 }
1009
1010
1011 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
1012 hso_dbg(0x1, "BULK IN callback but driver is not active!\n");
1013 return;
1014 }
1015 usb_mark_last_busy(urb->dev);
1016
1017 net = odev->net;
1018
1019 if (!netif_device_present(net)) {
1020
1021 return;
1022 }
1023
1024 if (odev->parent->port_spec & HSO_INFO_CRC_BUG)
1025 fix_crc_bug(urb, odev->in_endp->wMaxPacketSize);
1026
1027
1028 if (urb->actual_length) {
1029
1030
1031 spin_lock(&odev->net_lock);
1032 packetizeRx(odev, urb->transfer_buffer, urb->actual_length,
1033 (urb->transfer_buffer_length >
1034 urb->actual_length) ? 1 : 0);
1035 spin_unlock(&odev->net_lock);
1036 }
1037
1038
1039
1040 usb_fill_bulk_urb(urb,
1041 odev->parent->usb,
1042 usb_rcvbulkpipe(odev->parent->usb,
1043 odev->in_endp->
1044 bEndpointAddress & 0x7F),
1045 urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE,
1046 read_bulk_callback, odev);
1047
1048
1049
1050 result = usb_submit_urb(urb, GFP_ATOMIC);
1051 if (result)
1052 dev_warn(&odev->parent->interface->dev,
1053 "%s failed submit mux_bulk_rx_urb %d\n", __func__,
1054 result);
1055}
1056
1057
1058
1059static void hso_init_termios(struct ktermios *termios)
1060{
1061
1062
1063
1064 termios->c_iflag &=
1065 ~(IGNBRK
1066 | BRKINT
1067 | PARMRK
1068 | ISTRIP
1069 | INLCR
1070 | IGNCR
1071 | ICRNL
1072 | IXON);
1073
1074
1075 termios->c_oflag &= ~OPOST;
1076
1077 termios->c_lflag &=
1078 ~(ECHO
1079 | ECHONL
1080 | ICANON
1081
1082 | ISIG
1083
1084 | IEXTEN);
1085
1086 termios->c_cflag &=
1087 ~(CSIZE
1088 | PARENB
1089 | CBAUD
1090 | CBAUDEX);
1091
1092 termios->c_cflag |= CS8;
1093
1094
1095 tty_termios_encode_baud_rate(termios, 115200, 115200);
1096}
1097
1098static void _hso_serial_set_termios(struct tty_struct *tty,
1099 struct ktermios *old)
1100{
1101 struct hso_serial *serial = tty->driver_data;
1102
1103 if (!serial) {
1104 pr_err("%s: no tty structures", __func__);
1105 return;
1106 }
1107
1108 hso_dbg(0x8, "port %d\n", serial->minor);
1109
1110
1111
1112
1113 tty->termios.c_iflag &= ~IXON;
1114
1115 tty->termios.c_cflag &=
1116 ~(CSIZE
1117 | PARENB
1118 | CBAUD
1119 | CBAUDEX);
1120
1121 tty->termios.c_cflag |= CS8;
1122
1123
1124 tty_encode_baud_rate(tty, 115200, 115200);
1125}
1126
1127static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb)
1128{
1129 int result;
1130
1131
1132 usb_fill_bulk_urb(urb, serial->parent->usb,
1133 usb_rcvbulkpipe(serial->parent->usb,
1134 serial->in_endp->
1135 bEndpointAddress & 0x7F),
1136 urb->transfer_buffer, serial->rx_data_length,
1137 hso_std_serial_read_bulk_callback, serial);
1138
1139
1140 result = usb_submit_urb(urb, GFP_ATOMIC);
1141 if (result) {
1142 dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n",
1143 __func__, result);
1144 }
1145}
1146
1147
1148
1149
1150static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial)
1151{
1152 int count;
1153 struct urb *curr_urb;
1154
1155 while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) {
1156 curr_urb = serial->rx_urb[serial->curr_rx_urb_idx];
1157 count = put_rxbuf_data(curr_urb, serial);
1158 if (count == -1)
1159 return;
1160 if (count == 0) {
1161 serial->curr_rx_urb_idx++;
1162 if (serial->curr_rx_urb_idx >= serial->num_rx_urbs)
1163 serial->curr_rx_urb_idx = 0;
1164 hso_resubmit_rx_bulk_urb(serial, curr_urb);
1165 }
1166 }
1167}
1168
1169static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
1170{
1171 int count = 0;
1172 struct urb *urb;
1173
1174 urb = serial->rx_urb[0];
1175 if (serial->port.count > 0) {
1176 count = put_rxbuf_data(urb, serial);
1177 if (count == -1)
1178 return;
1179 }
1180
1181
1182 if (count == 0 && ((urb->actual_length != 0) ||
1183 (serial->rx_state == RX_PENDING))) {
1184 serial->rx_state = RX_SENT;
1185 hso_mux_serial_read(serial);
1186 } else
1187 serial->rx_state = RX_IDLE;
1188}
1189
1190
1191
1192static void hso_std_serial_read_bulk_callback(struct urb *urb)
1193{
1194 struct hso_serial *serial = urb->context;
1195 int status = urb->status;
1196
1197 hso_dbg(0x8, "--- Got serial_read_bulk callback %02x ---\n", status);
1198
1199
1200 if (!serial) {
1201 hso_dbg(0x1, "serial == NULL\n");
1202 return;
1203 }
1204 if (status) {
1205 handle_usb_error(status, __func__, serial->parent);
1206 return;
1207 }
1208
1209 hso_dbg(0x1, "Actual length = %d\n", urb->actual_length);
1210 DUMP1(urb->transfer_buffer, urb->actual_length);
1211
1212
1213 if (serial->port.count == 0)
1214 return;
1215
1216 if (serial->parent->port_spec & HSO_INFO_CRC_BUG)
1217 fix_crc_bug(urb, serial->in_endp->wMaxPacketSize);
1218
1219 spin_lock(&serial->serial_lock);
1220 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1;
1221 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1222 spin_unlock(&serial->serial_lock);
1223}
1224
1225
1226
1227
1228
1229static void hso_unthrottle_tasklet(struct hso_serial *serial)
1230{
1231 unsigned long flags;
1232
1233 spin_lock_irqsave(&serial->serial_lock, flags);
1234 if ((serial->parent->port_spec & HSO_INTF_MUX))
1235 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
1236 else
1237 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1238 spin_unlock_irqrestore(&serial->serial_lock, flags);
1239}
1240
1241static void hso_unthrottle(struct tty_struct *tty)
1242{
1243 struct hso_serial *serial = tty->driver_data;
1244
1245 tasklet_hi_schedule(&serial->unthrottle_tasklet);
1246}
1247
1248
1249static int hso_serial_open(struct tty_struct *tty, struct file *filp)
1250{
1251 struct hso_serial *serial = get_serial_by_index(tty->index);
1252 int result;
1253
1254
1255 if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) {
1256 WARN_ON(1);
1257 tty->driver_data = NULL;
1258 hso_dbg(0x1, "Failed to open port\n");
1259 return -ENODEV;
1260 }
1261
1262 mutex_lock(&serial->parent->mutex);
1263 result = usb_autopm_get_interface(serial->parent->interface);
1264 if (result < 0)
1265 goto err_out;
1266
1267 hso_dbg(0x1, "Opening %d\n", serial->minor);
1268
1269
1270 tty->driver_data = serial;
1271 tty_port_tty_set(&serial->port, tty);
1272
1273
1274 serial->port.count++;
1275 if (serial->port.count == 1) {
1276 serial->rx_state = RX_IDLE;
1277
1278 _hso_serial_set_termios(tty, NULL);
1279 tasklet_init(&serial->unthrottle_tasklet,
1280 (void (*)(unsigned long))hso_unthrottle_tasklet,
1281 (unsigned long)serial);
1282 result = hso_start_serial_device(serial->parent, GFP_KERNEL);
1283 if (result) {
1284 hso_stop_serial_device(serial->parent);
1285 serial->port.count--;
1286 } else {
1287 kref_get(&serial->parent->ref);
1288 }
1289 } else {
1290 hso_dbg(0x1, "Port was already open\n");
1291 }
1292
1293 usb_autopm_put_interface(serial->parent->interface);
1294
1295
1296 if (result)
1297 hso_serial_tiocmset(tty, TIOCM_RTS | TIOCM_DTR, 0);
1298err_out:
1299 mutex_unlock(&serial->parent->mutex);
1300 return result;
1301}
1302
1303
1304static void hso_serial_close(struct tty_struct *tty, struct file *filp)
1305{
1306 struct hso_serial *serial = tty->driver_data;
1307 u8 usb_gone;
1308
1309 hso_dbg(0x1, "Closing serial port\n");
1310
1311
1312 if (serial == NULL)
1313 return;
1314
1315 mutex_lock(&serial->parent->mutex);
1316 usb_gone = serial->parent->usb_gone;
1317
1318 if (!usb_gone)
1319 usb_autopm_get_interface(serial->parent->interface);
1320
1321
1322
1323 serial->port.count--;
1324
1325 if (serial->port.count <= 0) {
1326 serial->port.count = 0;
1327 tty_port_tty_set(&serial->port, NULL);
1328 if (!usb_gone)
1329 hso_stop_serial_device(serial->parent);
1330 tasklet_kill(&serial->unthrottle_tasklet);
1331 }
1332
1333 if (!usb_gone)
1334 usb_autopm_put_interface(serial->parent->interface);
1335
1336 mutex_unlock(&serial->parent->mutex);
1337}
1338
1339
1340static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf,
1341 int count)
1342{
1343 struct hso_serial *serial = tty->driver_data;
1344 int space, tx_bytes;
1345 unsigned long flags;
1346
1347
1348 if (serial == NULL) {
1349 pr_err("%s: serial is NULL\n", __func__);
1350 return -ENODEV;
1351 }
1352
1353 spin_lock_irqsave(&serial->serial_lock, flags);
1354
1355 space = serial->tx_data_length - serial->tx_buffer_count;
1356 tx_bytes = (count < space) ? count : space;
1357
1358 if (!tx_bytes)
1359 goto out;
1360
1361 memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes);
1362 serial->tx_buffer_count += tx_bytes;
1363
1364out:
1365 spin_unlock_irqrestore(&serial->serial_lock, flags);
1366
1367 hso_kick_transmit(serial);
1368
1369 return tx_bytes;
1370}
1371
1372
1373static int hso_serial_write_room(struct tty_struct *tty)
1374{
1375 struct hso_serial *serial = tty->driver_data;
1376 int room;
1377 unsigned long flags;
1378
1379 spin_lock_irqsave(&serial->serial_lock, flags);
1380 room = serial->tx_data_length - serial->tx_buffer_count;
1381 spin_unlock_irqrestore(&serial->serial_lock, flags);
1382
1383
1384 return room;
1385}
1386
1387static void hso_serial_cleanup(struct tty_struct *tty)
1388{
1389 struct hso_serial *serial = tty->driver_data;
1390
1391 if (!serial)
1392 return;
1393
1394 kref_put(&serial->parent->ref, hso_serial_ref_free);
1395}
1396
1397
1398static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
1399{
1400 struct hso_serial *serial = tty->driver_data;
1401 unsigned long flags;
1402
1403 if (old)
1404 hso_dbg(0x16, "Termios called with: cflags new[%d] - old[%d]\n",
1405 tty->termios.c_cflag, old->c_cflag);
1406
1407
1408 spin_lock_irqsave(&serial->serial_lock, flags);
1409 if (serial->port.count)
1410 _hso_serial_set_termios(tty, old);
1411 else
1412 tty->termios = *old;
1413 spin_unlock_irqrestore(&serial->serial_lock, flags);
1414
1415
1416}
1417
1418
1419static int hso_serial_chars_in_buffer(struct tty_struct *tty)
1420{
1421 struct hso_serial *serial = tty->driver_data;
1422 int chars;
1423 unsigned long flags;
1424
1425
1426 if (serial == NULL)
1427 return 0;
1428
1429 spin_lock_irqsave(&serial->serial_lock, flags);
1430 chars = serial->tx_buffer_count;
1431 spin_unlock_irqrestore(&serial->serial_lock, flags);
1432
1433 return chars;
1434}
1435static int tiocmget_submit_urb(struct hso_serial *serial,
1436 struct hso_tiocmget *tiocmget,
1437 struct usb_device *usb)
1438{
1439 int result;
1440
1441 if (serial->parent->usb_gone)
1442 return -ENODEV;
1443 usb_fill_int_urb(tiocmget->urb, usb,
1444 usb_rcvintpipe(usb,
1445 tiocmget->endp->
1446 bEndpointAddress & 0x7F),
1447 &tiocmget->serial_state_notification,
1448 sizeof(struct hso_serial_state_notification),
1449 tiocmget_intr_callback, serial,
1450 tiocmget->endp->bInterval);
1451 result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC);
1452 if (result) {
1453 dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__,
1454 result);
1455 }
1456 return result;
1457
1458}
1459
1460static void tiocmget_intr_callback(struct urb *urb)
1461{
1462 struct hso_serial *serial = urb->context;
1463 struct hso_tiocmget *tiocmget;
1464 int status = urb->status;
1465 u16 UART_state_bitmap, prev_UART_state_bitmap;
1466 struct uart_icount *icount;
1467 struct hso_serial_state_notification *serial_state_notification;
1468 struct usb_device *usb;
1469 struct usb_interface *interface;
1470 int if_num;
1471
1472
1473 if (!serial)
1474 return;
1475 if (status) {
1476 handle_usb_error(status, __func__, serial->parent);
1477 return;
1478 }
1479
1480
1481 tiocmget = serial->tiocmget;
1482 if (!tiocmget)
1483 return;
1484 BUG_ON((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM);
1485
1486 usb = serial->parent->usb;
1487 interface = serial->parent->interface;
1488
1489 if_num = interface->cur_altsetting->desc.bInterfaceNumber;
1490
1491
1492
1493
1494 serial_state_notification = &tiocmget->serial_state_notification;
1495 if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE ||
1496 serial_state_notification->bNotification != B_NOTIFICATION ||
1497 le16_to_cpu(serial_state_notification->wValue) != W_VALUE ||
1498 le16_to_cpu(serial_state_notification->wIndex) != if_num ||
1499 le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) {
1500 dev_warn(&usb->dev,
1501 "hso received invalid serial state notification\n");
1502 DUMP(serial_state_notification,
1503 sizeof(struct hso_serial_state_notification));
1504 } else {
1505
1506 UART_state_bitmap = le16_to_cpu(serial_state_notification->
1507 UART_state_bitmap);
1508 prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap;
1509 icount = &tiocmget->icount;
1510 spin_lock(&serial->serial_lock);
1511 if ((UART_state_bitmap & B_OVERRUN) !=
1512 (prev_UART_state_bitmap & B_OVERRUN))
1513 icount->parity++;
1514 if ((UART_state_bitmap & B_PARITY) !=
1515 (prev_UART_state_bitmap & B_PARITY))
1516 icount->parity++;
1517 if ((UART_state_bitmap & B_FRAMING) !=
1518 (prev_UART_state_bitmap & B_FRAMING))
1519 icount->frame++;
1520 if ((UART_state_bitmap & B_RING_SIGNAL) &&
1521 !(prev_UART_state_bitmap & B_RING_SIGNAL))
1522 icount->rng++;
1523 if ((UART_state_bitmap & B_BREAK) !=
1524 (prev_UART_state_bitmap & B_BREAK))
1525 icount->brk++;
1526 if ((UART_state_bitmap & B_TX_CARRIER) !=
1527 (prev_UART_state_bitmap & B_TX_CARRIER))
1528 icount->dsr++;
1529 if ((UART_state_bitmap & B_RX_CARRIER) !=
1530 (prev_UART_state_bitmap & B_RX_CARRIER))
1531 icount->dcd++;
1532 tiocmget->prev_UART_state_bitmap = UART_state_bitmap;
1533 spin_unlock(&serial->serial_lock);
1534 tiocmget->intr_completed = 1;
1535 wake_up_interruptible(&tiocmget->waitq);
1536 }
1537 memset(serial_state_notification, 0,
1538 sizeof(struct hso_serial_state_notification));
1539 tiocmget_submit_urb(serial,
1540 tiocmget,
1541 serial->parent->usb);
1542}
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552static int
1553hso_wait_modem_status(struct hso_serial *serial, unsigned long arg)
1554{
1555 DECLARE_WAITQUEUE(wait, current);
1556 struct uart_icount cprev, cnow;
1557 struct hso_tiocmget *tiocmget;
1558 int ret;
1559
1560 tiocmget = serial->tiocmget;
1561 if (!tiocmget)
1562 return -ENOENT;
1563
1564
1565
1566 spin_lock_irq(&serial->serial_lock);
1567 memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount));
1568 spin_unlock_irq(&serial->serial_lock);
1569 add_wait_queue(&tiocmget->waitq, &wait);
1570 for (;;) {
1571 spin_lock_irq(&serial->serial_lock);
1572 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1573 spin_unlock_irq(&serial->serial_lock);
1574 set_current_state(TASK_INTERRUPTIBLE);
1575 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1576 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1577 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) {
1578 ret = 0;
1579 break;
1580 }
1581 schedule();
1582
1583 if (signal_pending(current)) {
1584 ret = -ERESTARTSYS;
1585 break;
1586 }
1587 cprev = cnow;
1588 }
1589 __set_current_state(TASK_RUNNING);
1590 remove_wait_queue(&tiocmget->waitq, &wait);
1591
1592 return ret;
1593}
1594
1595
1596
1597
1598
1599
1600
1601static int hso_get_count(struct tty_struct *tty,
1602 struct serial_icounter_struct *icount)
1603{
1604 struct uart_icount cnow;
1605 struct hso_serial *serial = tty->driver_data;
1606 struct hso_tiocmget *tiocmget = serial->tiocmget;
1607
1608 memset(icount, 0, sizeof(struct serial_icounter_struct));
1609
1610 if (!tiocmget)
1611 return -ENOENT;
1612 spin_lock_irq(&serial->serial_lock);
1613 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1614 spin_unlock_irq(&serial->serial_lock);
1615
1616 icount->cts = cnow.cts;
1617 icount->dsr = cnow.dsr;
1618 icount->rng = cnow.rng;
1619 icount->dcd = cnow.dcd;
1620 icount->rx = cnow.rx;
1621 icount->tx = cnow.tx;
1622 icount->frame = cnow.frame;
1623 icount->overrun = cnow.overrun;
1624 icount->parity = cnow.parity;
1625 icount->brk = cnow.brk;
1626 icount->buf_overrun = cnow.buf_overrun;
1627
1628 return 0;
1629}
1630
1631
1632static int hso_serial_tiocmget(struct tty_struct *tty)
1633{
1634 int retval;
1635 struct hso_serial *serial = tty->driver_data;
1636 struct hso_tiocmget *tiocmget;
1637 u16 UART_state_bitmap;
1638
1639
1640 if (!serial) {
1641 hso_dbg(0x1, "no tty structures\n");
1642 return -EINVAL;
1643 }
1644 spin_lock_irq(&serial->serial_lock);
1645 retval = ((serial->rts_state) ? TIOCM_RTS : 0) |
1646 ((serial->dtr_state) ? TIOCM_DTR : 0);
1647 tiocmget = serial->tiocmget;
1648 if (tiocmget) {
1649
1650 UART_state_bitmap = le16_to_cpu(
1651 tiocmget->prev_UART_state_bitmap);
1652 if (UART_state_bitmap & B_RING_SIGNAL)
1653 retval |= TIOCM_RNG;
1654 if (UART_state_bitmap & B_RX_CARRIER)
1655 retval |= TIOCM_CD;
1656 if (UART_state_bitmap & B_TX_CARRIER)
1657 retval |= TIOCM_DSR;
1658 }
1659 spin_unlock_irq(&serial->serial_lock);
1660 return retval;
1661}
1662
1663static int hso_serial_tiocmset(struct tty_struct *tty,
1664 unsigned int set, unsigned int clear)
1665{
1666 int val = 0;
1667 unsigned long flags;
1668 int if_num;
1669 struct hso_serial *serial = tty->driver_data;
1670 struct usb_interface *interface;
1671
1672
1673 if (!serial) {
1674 hso_dbg(0x1, "no tty structures\n");
1675 return -EINVAL;
1676 }
1677
1678 if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM)
1679 return -EINVAL;
1680
1681 interface = serial->parent->interface;
1682 if_num = interface->cur_altsetting->desc.bInterfaceNumber;
1683
1684 spin_lock_irqsave(&serial->serial_lock, flags);
1685 if (set & TIOCM_RTS)
1686 serial->rts_state = 1;
1687 if (set & TIOCM_DTR)
1688 serial->dtr_state = 1;
1689
1690 if (clear & TIOCM_RTS)
1691 serial->rts_state = 0;
1692 if (clear & TIOCM_DTR)
1693 serial->dtr_state = 0;
1694
1695 if (serial->dtr_state)
1696 val |= 0x01;
1697 if (serial->rts_state)
1698 val |= 0x02;
1699
1700 spin_unlock_irqrestore(&serial->serial_lock, flags);
1701
1702 return usb_control_msg(serial->parent->usb,
1703 usb_rcvctrlpipe(serial->parent->usb, 0), 0x22,
1704 0x21, val, if_num, NULL, 0,
1705 USB_CTRL_SET_TIMEOUT);
1706}
1707
1708static int hso_serial_ioctl(struct tty_struct *tty,
1709 unsigned int cmd, unsigned long arg)
1710{
1711 struct hso_serial *serial = tty->driver_data;
1712 int ret = 0;
1713 hso_dbg(0x8, "IOCTL cmd: %d, arg: %ld\n", cmd, arg);
1714
1715 if (!serial)
1716 return -ENODEV;
1717 switch (cmd) {
1718 case TIOCMIWAIT:
1719 ret = hso_wait_modem_status(serial, arg);
1720 break;
1721 default:
1722 ret = -ENOIOCTLCMD;
1723 break;
1724 }
1725 return ret;
1726}
1727
1728
1729
1730static void hso_kick_transmit(struct hso_serial *serial)
1731{
1732 u8 *temp;
1733 unsigned long flags;
1734 int res;
1735
1736 spin_lock_irqsave(&serial->serial_lock, flags);
1737 if (!serial->tx_buffer_count)
1738 goto out;
1739
1740 if (serial->tx_urb_used)
1741 goto out;
1742
1743
1744 if (hso_get_activity(serial->parent) == -EAGAIN)
1745 goto out;
1746
1747
1748 temp = serial->tx_buffer;
1749 serial->tx_buffer = serial->tx_data;
1750 serial->tx_data = temp;
1751 serial->tx_data_count = serial->tx_buffer_count;
1752 serial->tx_buffer_count = 0;
1753
1754
1755 if (temp && serial->write_data) {
1756 res = serial->write_data(serial);
1757 if (res >= 0)
1758 serial->tx_urb_used = 1;
1759 }
1760out:
1761 spin_unlock_irqrestore(&serial->serial_lock, flags);
1762}
1763
1764
1765static int mux_device_request(struct hso_serial *serial, u8 type, u16 port,
1766 struct urb *ctrl_urb,
1767 struct usb_ctrlrequest *ctrl_req,
1768 u8 *ctrl_urb_data, u32 size)
1769{
1770 int result;
1771 int pipe;
1772
1773
1774 if (!serial || !ctrl_urb || !ctrl_req) {
1775 pr_err("%s: Wrong arguments\n", __func__);
1776 return -EINVAL;
1777 }
1778
1779
1780 ctrl_req->wValue = 0;
1781 ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port));
1782 ctrl_req->wLength = cpu_to_le16(size);
1783
1784 if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) {
1785
1786 ctrl_req->bRequestType = USB_DIR_IN |
1787 USB_TYPE_OPTION_VENDOR |
1788 USB_RECIP_INTERFACE;
1789 ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
1790 pipe = usb_rcvctrlpipe(serial->parent->usb, 0);
1791 } else {
1792
1793 ctrl_req->bRequestType = USB_DIR_OUT |
1794 USB_TYPE_OPTION_VENDOR |
1795 USB_RECIP_INTERFACE;
1796 ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND;
1797 pipe = usb_sndctrlpipe(serial->parent->usb, 0);
1798 }
1799
1800 hso_dbg(0x2, "%s command (%02x) len: %d, port: %d\n",
1801 type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write",
1802 ctrl_req->bRequestType, ctrl_req->wLength, port);
1803
1804
1805 ctrl_urb->transfer_flags = 0;
1806 usb_fill_control_urb(ctrl_urb,
1807 serial->parent->usb,
1808 pipe,
1809 (u8 *) ctrl_req,
1810 ctrl_urb_data, size, ctrl_callback, serial);
1811
1812 result = usb_submit_urb(ctrl_urb, GFP_ATOMIC);
1813 if (result) {
1814 dev_err(&ctrl_urb->dev->dev,
1815 "%s failed submit ctrl_urb %d type %d\n", __func__,
1816 result, type);
1817 return result;
1818 }
1819
1820
1821 return size;
1822}
1823
1824
1825static int hso_mux_serial_read(struct hso_serial *serial)
1826{
1827 if (!serial)
1828 return -EINVAL;
1829
1830
1831 memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE);
1832
1833
1834 if (serial->num_rx_urbs != 1) {
1835 dev_err(&serial->parent->interface->dev,
1836 "ERROR: mux'd reads with multiple buffers "
1837 "not possible\n");
1838 return 0;
1839 }
1840 return mux_device_request(serial,
1841 USB_CDC_GET_ENCAPSULATED_RESPONSE,
1842 serial->parent->port_spec & HSO_PORT_MASK,
1843 serial->rx_urb[0],
1844 &serial->ctrl_req_rx,
1845 serial->rx_data[0], serial->rx_data_length);
1846}
1847
1848
1849static void intr_callback(struct urb *urb)
1850{
1851 struct hso_shared_int *shared_int = urb->context;
1852 struct hso_serial *serial;
1853 unsigned char *port_req;
1854 int status = urb->status;
1855 int i;
1856
1857 usb_mark_last_busy(urb->dev);
1858
1859
1860 if (!shared_int)
1861 return;
1862
1863
1864 if (status) {
1865 handle_usb_error(status, __func__, NULL);
1866 return;
1867 }
1868 hso_dbg(0x8, "--- Got intr callback 0x%02X ---\n", status);
1869
1870
1871 port_req = urb->transfer_buffer;
1872 hso_dbg(0x8, "port_req = 0x%.2X\n", *port_req);
1873
1874 for (i = 0; i < 8; i++) {
1875
1876 if (*port_req & (1 << i)) {
1877 serial = get_serial_by_shared_int_and_type(shared_int,
1878 (1 << i));
1879 if (serial != NULL) {
1880 hso_dbg(0x1, "Pending read interrupt on port %d\n",
1881 i);
1882 spin_lock(&serial->serial_lock);
1883 if (serial->rx_state == RX_IDLE &&
1884 serial->port.count > 0) {
1885
1886
1887 if (!serial->rx_urb_filled[0]) {
1888 serial->rx_state = RX_SENT;
1889 hso_mux_serial_read(serial);
1890 } else
1891 serial->rx_state = RX_PENDING;
1892 } else {
1893 hso_dbg(0x1, "Already a read pending on port %d or port not open\n",
1894 i);
1895 }
1896 spin_unlock(&serial->serial_lock);
1897 }
1898 }
1899 }
1900
1901 hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC);
1902}
1903
1904
1905static int hso_mux_serial_write_data(struct hso_serial *serial)
1906{
1907 if (NULL == serial)
1908 return -EINVAL;
1909
1910 return mux_device_request(serial,
1911 USB_CDC_SEND_ENCAPSULATED_COMMAND,
1912 serial->parent->port_spec & HSO_PORT_MASK,
1913 serial->tx_urb,
1914 &serial->ctrl_req_tx,
1915 serial->tx_data, serial->tx_data_count);
1916}
1917
1918
1919static void hso_std_serial_write_bulk_callback(struct urb *urb)
1920{
1921 struct hso_serial *serial = urb->context;
1922 int status = urb->status;
1923
1924
1925 if (!serial) {
1926 hso_dbg(0x1, "serial == NULL\n");
1927 return;
1928 }
1929
1930 spin_lock(&serial->serial_lock);
1931 serial->tx_urb_used = 0;
1932 spin_unlock(&serial->serial_lock);
1933 if (status) {
1934 handle_usb_error(status, __func__, serial->parent);
1935 return;
1936 }
1937 hso_put_activity(serial->parent);
1938 tty_port_tty_wakeup(&serial->port);
1939 hso_kick_transmit(serial);
1940
1941 hso_dbg(0x1, "\n");
1942}
1943
1944
1945static int hso_std_serial_write_data(struct hso_serial *serial)
1946{
1947 int count = serial->tx_data_count;
1948 int result;
1949
1950 usb_fill_bulk_urb(serial->tx_urb,
1951 serial->parent->usb,
1952 usb_sndbulkpipe(serial->parent->usb,
1953 serial->out_endp->
1954 bEndpointAddress & 0x7F),
1955 serial->tx_data, serial->tx_data_count,
1956 hso_std_serial_write_bulk_callback, serial);
1957
1958 result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC);
1959 if (result) {
1960 dev_warn(&serial->parent->usb->dev,
1961 "Failed to submit urb - res %d\n", result);
1962 return result;
1963 }
1964
1965 return count;
1966}
1967
1968
1969static void ctrl_callback(struct urb *urb)
1970{
1971 struct hso_serial *serial = urb->context;
1972 struct usb_ctrlrequest *req;
1973 int status = urb->status;
1974
1975
1976 if (!serial)
1977 return;
1978
1979 spin_lock(&serial->serial_lock);
1980 serial->tx_urb_used = 0;
1981 spin_unlock(&serial->serial_lock);
1982 if (status) {
1983 handle_usb_error(status, __func__, serial->parent);
1984 return;
1985 }
1986
1987
1988 req = (struct usb_ctrlrequest *)(urb->setup_packet);
1989 hso_dbg(0x8, "--- Got muxed ctrl callback 0x%02X ---\n", status);
1990 hso_dbg(0x8, "Actual length of urb = %d\n", urb->actual_length);
1991 DUMP1(urb->transfer_buffer, urb->actual_length);
1992
1993 if (req->bRequestType ==
1994 (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) {
1995
1996 serial->rx_urb_filled[0] = 1;
1997 spin_lock(&serial->serial_lock);
1998 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
1999 spin_unlock(&serial->serial_lock);
2000 } else {
2001 hso_put_activity(serial->parent);
2002 tty_port_tty_wakeup(&serial->port);
2003
2004 hso_kick_transmit(serial);
2005 }
2006}
2007
2008
2009static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
2010{
2011 struct tty_struct *tty;
2012 int count;
2013
2014
2015 if (urb == NULL || serial == NULL) {
2016 hso_dbg(0x1, "serial = NULL\n");
2017 return -2;
2018 }
2019
2020 tty = tty_port_tty_get(&serial->port);
2021
2022 if (tty && tty_throttled(tty)) {
2023 tty_kref_put(tty);
2024 return -1;
2025 }
2026
2027
2028 hso_dbg(0x1, "data to push to tty\n");
2029 count = tty_buffer_request_room(&serial->port, urb->actual_length);
2030 if (count >= urb->actual_length) {
2031 tty_insert_flip_string(&serial->port, urb->transfer_buffer,
2032 urb->actual_length);
2033 tty_flip_buffer_push(&serial->port);
2034 } else {
2035 dev_warn(&serial->parent->usb->dev,
2036 "dropping data, %d bytes lost\n", urb->actual_length);
2037 }
2038
2039 tty_kref_put(tty);
2040
2041 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
2042
2043 return 0;
2044}
2045
2046
2047
2048
2049static void hso_log_port(struct hso_device *hso_dev)
2050{
2051 char *port_type;
2052 char port_dev[20];
2053
2054 switch (hso_dev->port_spec & HSO_PORT_MASK) {
2055 case HSO_PORT_CONTROL:
2056 port_type = "Control";
2057 break;
2058 case HSO_PORT_APP:
2059 port_type = "Application";
2060 break;
2061 case HSO_PORT_GPS:
2062 port_type = "GPS";
2063 break;
2064 case HSO_PORT_GPS_CONTROL:
2065 port_type = "GPS control";
2066 break;
2067 case HSO_PORT_APP2:
2068 port_type = "Application2";
2069 break;
2070 case HSO_PORT_PCSC:
2071 port_type = "PCSC";
2072 break;
2073 case HSO_PORT_DIAG:
2074 port_type = "Diagnostic";
2075 break;
2076 case HSO_PORT_DIAG2:
2077 port_type = "Diagnostic2";
2078 break;
2079 case HSO_PORT_MODEM:
2080 port_type = "Modem";
2081 break;
2082 case HSO_PORT_NETWORK:
2083 port_type = "Network";
2084 break;
2085 default:
2086 port_type = "Unknown";
2087 break;
2088 }
2089 if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2090 sprintf(port_dev, "%s", dev2net(hso_dev)->net->name);
2091 } else
2092 sprintf(port_dev, "/dev/%s%d", tty_filename,
2093 dev2ser(hso_dev)->minor);
2094
2095 dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n",
2096 port_type, port_dev);
2097}
2098
2099static int hso_start_net_device(struct hso_device *hso_dev)
2100{
2101 int i, result = 0;
2102 struct hso_net *hso_net = dev2net(hso_dev);
2103
2104 if (!hso_net)
2105 return -ENODEV;
2106
2107
2108 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2109
2110
2111 usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i],
2112 hso_dev->usb,
2113 usb_rcvbulkpipe(hso_dev->usb,
2114 hso_net->in_endp->
2115 bEndpointAddress & 0x7F),
2116 hso_net->mux_bulk_rx_buf_pool[i],
2117 MUX_BULK_RX_BUF_SIZE, read_bulk_callback,
2118 hso_net);
2119
2120
2121 result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i],
2122 GFP_NOIO);
2123 if (result)
2124 dev_warn(&hso_dev->usb->dev,
2125 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__,
2126 i, result);
2127 }
2128
2129 return result;
2130}
2131
2132static int hso_stop_net_device(struct hso_device *hso_dev)
2133{
2134 int i;
2135 struct hso_net *hso_net = dev2net(hso_dev);
2136
2137 if (!hso_net)
2138 return -ENODEV;
2139
2140 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2141 if (hso_net->mux_bulk_rx_urb_pool[i])
2142 usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2143
2144 }
2145 if (hso_net->mux_bulk_tx_urb)
2146 usb_kill_urb(hso_net->mux_bulk_tx_urb);
2147
2148 return 0;
2149}
2150
2151static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags)
2152{
2153 int i, result = 0;
2154 struct hso_serial *serial = dev2ser(hso_dev);
2155
2156 if (!serial)
2157 return -ENODEV;
2158
2159
2160
2161 if (!(serial->parent->port_spec & HSO_INTF_MUX)) {
2162 for (i = 0; i < serial->num_rx_urbs; i++) {
2163 usb_fill_bulk_urb(serial->rx_urb[i],
2164 serial->parent->usb,
2165 usb_rcvbulkpipe(serial->parent->usb,
2166 serial->in_endp->
2167 bEndpointAddress &
2168 0x7F),
2169 serial->rx_data[i],
2170 serial->rx_data_length,
2171 hso_std_serial_read_bulk_callback,
2172 serial);
2173 result = usb_submit_urb(serial->rx_urb[i], flags);
2174 if (result) {
2175 dev_warn(&serial->parent->usb->dev,
2176 "Failed to submit urb - res %d\n",
2177 result);
2178 break;
2179 }
2180 }
2181 } else {
2182 mutex_lock(&serial->shared_int->shared_int_lock);
2183 if (!serial->shared_int->use_count) {
2184 result =
2185 hso_mux_submit_intr_urb(serial->shared_int,
2186 hso_dev->usb, flags);
2187 }
2188 serial->shared_int->use_count++;
2189 mutex_unlock(&serial->shared_int->shared_int_lock);
2190 }
2191 if (serial->tiocmget)
2192 tiocmget_submit_urb(serial,
2193 serial->tiocmget,
2194 serial->parent->usb);
2195 return result;
2196}
2197
2198static int hso_stop_serial_device(struct hso_device *hso_dev)
2199{
2200 int i;
2201 struct hso_serial *serial = dev2ser(hso_dev);
2202 struct hso_tiocmget *tiocmget;
2203
2204 if (!serial)
2205 return -ENODEV;
2206
2207 for (i = 0; i < serial->num_rx_urbs; i++) {
2208 if (serial->rx_urb[i]) {
2209 usb_kill_urb(serial->rx_urb[i]);
2210 serial->rx_urb_filled[i] = 0;
2211 }
2212 }
2213 serial->curr_rx_urb_idx = 0;
2214
2215 if (serial->tx_urb)
2216 usb_kill_urb(serial->tx_urb);
2217
2218 if (serial->shared_int) {
2219 mutex_lock(&serial->shared_int->shared_int_lock);
2220 if (serial->shared_int->use_count &&
2221 (--serial->shared_int->use_count == 0)) {
2222 struct urb *urb;
2223
2224 urb = serial->shared_int->shared_intr_urb;
2225 if (urb)
2226 usb_kill_urb(urb);
2227 }
2228 mutex_unlock(&serial->shared_int->shared_int_lock);
2229 }
2230 tiocmget = serial->tiocmget;
2231 if (tiocmget) {
2232 wake_up_interruptible(&tiocmget->waitq);
2233 usb_kill_urb(tiocmget->urb);
2234 }
2235
2236 return 0;
2237}
2238
2239static void hso_serial_tty_unregister(struct hso_serial *serial)
2240{
2241 tty_unregister_device(tty_drv, serial->minor);
2242}
2243
2244static void hso_serial_common_free(struct hso_serial *serial)
2245{
2246 int i;
2247
2248 for (i = 0; i < serial->num_rx_urbs; i++) {
2249
2250 usb_free_urb(serial->rx_urb[i]);
2251
2252 kfree(serial->rx_data[i]);
2253 }
2254
2255
2256 usb_free_urb(serial->tx_urb);
2257 kfree(serial->tx_buffer);
2258 kfree(serial->tx_data);
2259 tty_port_destroy(&serial->port);
2260}
2261
2262static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
2263 int rx_size, int tx_size)
2264{
2265 int minor;
2266 int i;
2267
2268 tty_port_init(&serial->port);
2269
2270 minor = get_free_serial_index();
2271 if (minor < 0)
2272 goto exit;
2273
2274
2275 serial->parent->dev = tty_port_register_device_attr(&serial->port,
2276 tty_drv, minor, &serial->parent->interface->dev,
2277 serial->parent, hso_serial_dev_groups);
2278
2279
2280 serial->minor = minor;
2281 serial->magic = HSO_SERIAL_MAGIC;
2282 spin_lock_init(&serial->serial_lock);
2283 serial->num_rx_urbs = num_urbs;
2284
2285
2286
2287
2288 serial->rx_data_length = rx_size;
2289 for (i = 0; i < serial->num_rx_urbs; i++) {
2290 serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
2291 if (!serial->rx_urb[i])
2292 goto exit;
2293 serial->rx_urb[i]->transfer_buffer = NULL;
2294 serial->rx_urb[i]->transfer_buffer_length = 0;
2295 serial->rx_data[i] = kzalloc(serial->rx_data_length,
2296 GFP_KERNEL);
2297 if (!serial->rx_data[i])
2298 goto exit;
2299 }
2300
2301
2302 serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2303 if (!serial->tx_urb)
2304 goto exit;
2305 serial->tx_urb->transfer_buffer = NULL;
2306 serial->tx_urb->transfer_buffer_length = 0;
2307
2308 serial->tx_data_count = 0;
2309 serial->tx_buffer_count = 0;
2310 serial->tx_data_length = tx_size;
2311 serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL);
2312 if (!serial->tx_data)
2313 goto exit;
2314
2315 serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL);
2316 if (!serial->tx_buffer)
2317 goto exit;
2318
2319 return 0;
2320exit:
2321 hso_serial_tty_unregister(serial);
2322 hso_serial_common_free(serial);
2323 return -1;
2324}
2325
2326
2327static struct hso_device *hso_create_device(struct usb_interface *intf,
2328 int port_spec)
2329{
2330 struct hso_device *hso_dev;
2331
2332 hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC);
2333 if (!hso_dev)
2334 return NULL;
2335
2336 hso_dev->port_spec = port_spec;
2337 hso_dev->usb = interface_to_usbdev(intf);
2338 hso_dev->interface = intf;
2339 kref_init(&hso_dev->ref);
2340 mutex_init(&hso_dev->mutex);
2341
2342 INIT_WORK(&hso_dev->async_get_intf, async_get_intf);
2343 INIT_WORK(&hso_dev->async_put_intf, async_put_intf);
2344
2345 return hso_dev;
2346}
2347
2348
2349static int remove_net_device(struct hso_device *hso_dev)
2350{
2351 int i;
2352
2353 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2354 if (network_table[i] == hso_dev) {
2355 network_table[i] = NULL;
2356 break;
2357 }
2358 }
2359 if (i == HSO_MAX_NET_DEVICES)
2360 return -1;
2361 return 0;
2362}
2363
2364
2365static void hso_free_net_device(struct hso_device *hso_dev)
2366{
2367 int i;
2368 struct hso_net *hso_net = dev2net(hso_dev);
2369
2370 if (!hso_net)
2371 return;
2372
2373 remove_net_device(hso_net->parent);
2374
2375 if (hso_net->net)
2376 unregister_netdev(hso_net->net);
2377
2378
2379 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2380 usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2381 kfree(hso_net->mux_bulk_rx_buf_pool[i]);
2382 hso_net->mux_bulk_rx_buf_pool[i] = NULL;
2383 }
2384 usb_free_urb(hso_net->mux_bulk_tx_urb);
2385 kfree(hso_net->mux_bulk_tx_buf);
2386 hso_net->mux_bulk_tx_buf = NULL;
2387
2388 if (hso_net->net)
2389 free_netdev(hso_net->net);
2390
2391 kfree(hso_dev);
2392}
2393
2394static const struct net_device_ops hso_netdev_ops = {
2395 .ndo_open = hso_net_open,
2396 .ndo_stop = hso_net_close,
2397 .ndo_start_xmit = hso_net_start_xmit,
2398 .ndo_tx_timeout = hso_net_tx_timeout,
2399};
2400
2401
2402static void hso_net_init(struct net_device *net)
2403{
2404 struct hso_net *hso_net = netdev_priv(net);
2405
2406 hso_dbg(0x1, "sizeof hso_net is %zu\n", sizeof(*hso_net));
2407
2408
2409 net->netdev_ops = &hso_netdev_ops;
2410 net->watchdog_timeo = HSO_NET_TX_TIMEOUT;
2411 net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
2412 net->type = ARPHRD_NONE;
2413 net->mtu = DEFAULT_MTU - 14;
2414 net->tx_queue_len = 10;
2415 net->ethtool_ops = &ops;
2416
2417
2418 spin_lock_init(&hso_net->net_lock);
2419}
2420
2421
2422static int add_net_device(struct hso_device *hso_dev)
2423{
2424 int i;
2425
2426 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2427 if (network_table[i] == NULL) {
2428 network_table[i] = hso_dev;
2429 break;
2430 }
2431 }
2432 if (i == HSO_MAX_NET_DEVICES)
2433 return -1;
2434 return 0;
2435}
2436
2437static int hso_rfkill_set_block(void *data, bool blocked)
2438{
2439 struct hso_device *hso_dev = data;
2440 int enabled = !blocked;
2441 int rv;
2442
2443 mutex_lock(&hso_dev->mutex);
2444 if (hso_dev->usb_gone)
2445 rv = 0;
2446 else
2447 rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0),
2448 enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
2449 USB_CTRL_SET_TIMEOUT);
2450 mutex_unlock(&hso_dev->mutex);
2451 return rv;
2452}
2453
2454static const struct rfkill_ops hso_rfkill_ops = {
2455 .set_block = hso_rfkill_set_block,
2456};
2457
2458
2459static void hso_create_rfkill(struct hso_device *hso_dev,
2460 struct usb_interface *interface)
2461{
2462 struct hso_net *hso_net = dev2net(hso_dev);
2463 struct device *dev = &hso_net->net->dev;
2464 static u32 rfkill_counter;
2465
2466 snprintf(hso_net->name, sizeof(hso_net->name), "hso-%d",
2467 rfkill_counter++);
2468
2469 hso_net->rfkill = rfkill_alloc(hso_net->name,
2470 &interface_to_usbdev(interface)->dev,
2471 RFKILL_TYPE_WWAN,
2472 &hso_rfkill_ops, hso_dev);
2473 if (!hso_net->rfkill) {
2474 dev_err(dev, "%s - Out of memory\n", __func__);
2475 return;
2476 }
2477 if (rfkill_register(hso_net->rfkill) < 0) {
2478 rfkill_destroy(hso_net->rfkill);
2479 hso_net->rfkill = NULL;
2480 dev_err(dev, "%s - Failed to register rfkill\n", __func__);
2481 return;
2482 }
2483}
2484
2485static struct device_type hso_type = {
2486 .name = "wwan",
2487};
2488
2489
2490static struct hso_device *hso_create_net_device(struct usb_interface *interface,
2491 int port_spec)
2492{
2493 int result, i;
2494 struct net_device *net;
2495 struct hso_net *hso_net;
2496 struct hso_device *hso_dev;
2497
2498 hso_dev = hso_create_device(interface, port_spec);
2499 if (!hso_dev)
2500 return NULL;
2501
2502
2503
2504 net = alloc_netdev(sizeof(struct hso_net), "hso%d", NET_NAME_UNKNOWN,
2505 hso_net_init);
2506 if (!net) {
2507 dev_err(&interface->dev, "Unable to create ethernet device\n");
2508 goto exit;
2509 }
2510
2511 hso_net = netdev_priv(net);
2512
2513 hso_dev->port_data.dev_net = hso_net;
2514 hso_net->net = net;
2515 hso_net->parent = hso_dev;
2516
2517 hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2518 USB_DIR_IN);
2519 if (!hso_net->in_endp) {
2520 dev_err(&interface->dev, "Can't find BULK IN endpoint\n");
2521 goto exit;
2522 }
2523 hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2524 USB_DIR_OUT);
2525 if (!hso_net->out_endp) {
2526 dev_err(&interface->dev, "Can't find BULK OUT endpoint\n");
2527 goto exit;
2528 }
2529 SET_NETDEV_DEV(net, &interface->dev);
2530 SET_NETDEV_DEVTYPE(net, &hso_type);
2531
2532
2533 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2534 hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL);
2535 if (!hso_net->mux_bulk_rx_urb_pool[i])
2536 goto exit;
2537 hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE,
2538 GFP_KERNEL);
2539 if (!hso_net->mux_bulk_rx_buf_pool[i])
2540 goto exit;
2541 }
2542 hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2543 if (!hso_net->mux_bulk_tx_urb)
2544 goto exit;
2545 hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL);
2546 if (!hso_net->mux_bulk_tx_buf)
2547 goto exit;
2548
2549 add_net_device(hso_dev);
2550
2551
2552 result = register_netdev(net);
2553 if (result) {
2554 dev_err(&interface->dev, "Failed to register device\n");
2555 goto exit;
2556 }
2557
2558 hso_log_port(hso_dev);
2559
2560 hso_create_rfkill(hso_dev, interface);
2561
2562 return hso_dev;
2563exit:
2564 hso_free_net_device(hso_dev);
2565 return NULL;
2566}
2567
2568static void hso_free_tiomget(struct hso_serial *serial)
2569{
2570 struct hso_tiocmget *tiocmget;
2571 if (!serial)
2572 return;
2573 tiocmget = serial->tiocmget;
2574 if (tiocmget) {
2575 usb_free_urb(tiocmget->urb);
2576 tiocmget->urb = NULL;
2577 serial->tiocmget = NULL;
2578 kfree(tiocmget);
2579 }
2580}
2581
2582
2583static void hso_free_serial_device(struct hso_device *hso_dev)
2584{
2585 struct hso_serial *serial = dev2ser(hso_dev);
2586
2587 if (!serial)
2588 return;
2589
2590 hso_serial_common_free(serial);
2591
2592 if (serial->shared_int) {
2593 mutex_lock(&serial->shared_int->shared_int_lock);
2594 if (--serial->shared_int->ref_count == 0)
2595 hso_free_shared_int(serial->shared_int);
2596 else
2597 mutex_unlock(&serial->shared_int->shared_int_lock);
2598 }
2599 hso_free_tiomget(serial);
2600 kfree(serial);
2601 kfree(hso_dev);
2602}
2603
2604
2605static struct hso_device *hso_create_bulk_serial_device(
2606 struct usb_interface *interface, int port)
2607{
2608 struct hso_device *hso_dev;
2609 struct hso_serial *serial;
2610 int num_urbs;
2611 struct hso_tiocmget *tiocmget;
2612
2613 hso_dev = hso_create_device(interface, port);
2614 if (!hso_dev)
2615 return NULL;
2616
2617 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2618 if (!serial)
2619 goto exit;
2620
2621 serial->parent = hso_dev;
2622 hso_dev->port_data.dev_serial = serial;
2623
2624 if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
2625 num_urbs = 2;
2626 serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
2627 GFP_KERNEL);
2628
2629
2630
2631 if (serial->tiocmget) {
2632 tiocmget = serial->tiocmget;
2633 tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
2634 if (tiocmget->urb) {
2635 mutex_init(&tiocmget->mutex);
2636 init_waitqueue_head(&tiocmget->waitq);
2637 tiocmget->endp = hso_get_ep(
2638 interface,
2639 USB_ENDPOINT_XFER_INT,
2640 USB_DIR_IN);
2641 } else
2642 hso_free_tiomget(serial);
2643 }
2644 }
2645 else
2646 num_urbs = 1;
2647
2648 if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE,
2649 BULK_URB_TX_SIZE))
2650 goto exit;
2651
2652 serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2653 USB_DIR_IN);
2654 if (!serial->in_endp) {
2655 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
2656 goto exit2;
2657 }
2658
2659 if (!
2660 (serial->out_endp =
2661 hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) {
2662 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
2663 goto exit2;
2664 }
2665
2666 serial->write_data = hso_std_serial_write_data;
2667
2668
2669 set_serial_by_index(serial->minor, serial);
2670
2671
2672 hso_log_port(hso_dev);
2673
2674
2675 return hso_dev;
2676
2677exit2:
2678 hso_serial_tty_unregister(serial);
2679 hso_serial_common_free(serial);
2680exit:
2681 hso_free_tiomget(serial);
2682 kfree(serial);
2683 kfree(hso_dev);
2684 return NULL;
2685}
2686
2687
2688static
2689struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
2690 int port,
2691 struct hso_shared_int *mux)
2692{
2693 struct hso_device *hso_dev;
2694 struct hso_serial *serial;
2695 int port_spec;
2696
2697 port_spec = HSO_INTF_MUX;
2698 port_spec &= ~HSO_PORT_MASK;
2699
2700 port_spec |= hso_mux_to_port(port);
2701 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT)
2702 return NULL;
2703
2704 hso_dev = hso_create_device(interface, port_spec);
2705 if (!hso_dev)
2706 return NULL;
2707
2708 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2709 if (!serial)
2710 goto exit;
2711
2712 hso_dev->port_data.dev_serial = serial;
2713 serial->parent = hso_dev;
2714
2715 if (hso_serial_common_create
2716 (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE))
2717 goto exit;
2718
2719 serial->tx_data_length--;
2720 serial->write_data = hso_mux_serial_write_data;
2721
2722 serial->shared_int = mux;
2723 mutex_lock(&serial->shared_int->shared_int_lock);
2724 serial->shared_int->ref_count++;
2725 mutex_unlock(&serial->shared_int->shared_int_lock);
2726
2727
2728 set_serial_by_index(serial->minor, serial);
2729
2730
2731 hso_log_port(hso_dev);
2732
2733
2734 return hso_dev;
2735
2736exit:
2737 if (serial) {
2738 tty_unregister_device(tty_drv, serial->minor);
2739 kfree(serial);
2740 }
2741 kfree(hso_dev);
2742 return NULL;
2743
2744}
2745
2746static void hso_free_shared_int(struct hso_shared_int *mux)
2747{
2748 usb_free_urb(mux->shared_intr_urb);
2749 kfree(mux->shared_intr_buf);
2750 mutex_unlock(&mux->shared_int_lock);
2751 kfree(mux);
2752}
2753
2754static
2755struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface)
2756{
2757 struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL);
2758
2759 if (!mux)
2760 return NULL;
2761
2762 mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT,
2763 USB_DIR_IN);
2764 if (!mux->intr_endp) {
2765 dev_err(&interface->dev, "Can't find INT IN endpoint\n");
2766 goto exit;
2767 }
2768
2769 mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL);
2770 if (!mux->shared_intr_urb)
2771 goto exit;
2772 mux->shared_intr_buf =
2773 kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize),
2774 GFP_KERNEL);
2775 if (!mux->shared_intr_buf)
2776 goto exit;
2777
2778 mutex_init(&mux->shared_int_lock);
2779
2780 return mux;
2781
2782exit:
2783 kfree(mux->shared_intr_buf);
2784 usb_free_urb(mux->shared_intr_urb);
2785 kfree(mux);
2786 return NULL;
2787}
2788
2789
2790static int hso_get_config_data(struct usb_interface *interface)
2791{
2792 struct usb_device *usbdev = interface_to_usbdev(interface);
2793 u8 *config_data = kmalloc(17, GFP_KERNEL);
2794 u32 if_num = interface->cur_altsetting->desc.bInterfaceNumber;
2795 s32 result;
2796
2797 if (!config_data)
2798 return -ENOMEM;
2799 if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
2800 0x86, 0xC0, 0, 0, config_data, 17,
2801 USB_CTRL_SET_TIMEOUT) != 0x11) {
2802 kfree(config_data);
2803 return -EIO;
2804 }
2805
2806 switch (config_data[if_num]) {
2807 case 0x0:
2808 result = 0;
2809 break;
2810 case 0x1:
2811 result = HSO_PORT_DIAG;
2812 break;
2813 case 0x2:
2814 result = HSO_PORT_GPS;
2815 break;
2816 case 0x3:
2817 result = HSO_PORT_GPS_CONTROL;
2818 break;
2819 case 0x4:
2820 result = HSO_PORT_APP;
2821 break;
2822 case 0x5:
2823 result = HSO_PORT_APP2;
2824 break;
2825 case 0x6:
2826 result = HSO_PORT_CONTROL;
2827 break;
2828 case 0x7:
2829 result = HSO_PORT_NETWORK;
2830 break;
2831 case 0x8:
2832 result = HSO_PORT_MODEM;
2833 break;
2834 case 0x9:
2835 result = HSO_PORT_MSD;
2836 break;
2837 case 0xa:
2838 result = HSO_PORT_PCSC;
2839 break;
2840 case 0xb:
2841 result = HSO_PORT_VOICE;
2842 break;
2843 default:
2844 result = 0;
2845 }
2846
2847 if (result)
2848 result |= HSO_INTF_BULK;
2849
2850 if (config_data[16] & 0x1)
2851 result |= HSO_INFO_CRC_BUG;
2852
2853 kfree(config_data);
2854 return result;
2855}
2856
2857
2858static int hso_probe(struct usb_interface *interface,
2859 const struct usb_device_id *id)
2860{
2861 int mux, i, if_num, port_spec;
2862 unsigned char port_mask;
2863 struct hso_device *hso_dev = NULL;
2864 struct hso_shared_int *shared_int;
2865 struct hso_device *tmp_dev = NULL;
2866
2867 if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
2868 dev_err(&interface->dev, "Not our interface\n");
2869 return -ENODEV;
2870 }
2871
2872 if_num = interface->cur_altsetting->desc.bInterfaceNumber;
2873
2874
2875
2876 if (id->driver_info)
2877 port_spec = ((u32 *)(id->driver_info))[if_num];
2878 else
2879 port_spec = hso_get_config_data(interface);
2880
2881
2882
2883 if (interface->num_altsetting > 1)
2884 usb_set_interface(interface_to_usbdev(interface), if_num, 1);
2885 interface->needs_remote_wakeup = 1;
2886
2887
2888 switch (port_spec & HSO_INTF_MASK) {
2889 case HSO_INTF_MUX:
2890 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2891
2892 if (!disable_net) {
2893 hso_dev = hso_create_net_device(interface,
2894 port_spec);
2895 if (!hso_dev)
2896 goto exit;
2897 tmp_dev = hso_dev;
2898 }
2899 }
2900
2901 if (hso_get_mux_ports(interface, &port_mask))
2902
2903 goto exit;
2904
2905 shared_int = hso_create_shared_int(interface);
2906 if (!shared_int)
2907 goto exit;
2908
2909 for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) {
2910 if (port_mask & i) {
2911 hso_dev = hso_create_mux_serial_device(
2912 interface, i, shared_int);
2913 if (!hso_dev)
2914 goto exit;
2915 }
2916 }
2917
2918 if (tmp_dev)
2919 hso_dev = tmp_dev;
2920 break;
2921
2922 case HSO_INTF_BULK:
2923
2924 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2925 if (!disable_net)
2926 hso_dev =
2927 hso_create_net_device(interface, port_spec);
2928 } else {
2929 hso_dev =
2930 hso_create_bulk_serial_device(interface, port_spec);
2931 }
2932 if (!hso_dev)
2933 goto exit;
2934 break;
2935 default:
2936 goto exit;
2937 }
2938
2939
2940 usb_set_intfdata(interface, hso_dev);
2941
2942
2943 return 0;
2944exit:
2945 hso_free_interface(interface);
2946 return -ENODEV;
2947}
2948
2949
2950static void hso_disconnect(struct usb_interface *interface)
2951{
2952 hso_free_interface(interface);
2953
2954
2955 usb_set_intfdata(interface, NULL);
2956}
2957
2958static void async_get_intf(struct work_struct *data)
2959{
2960 struct hso_device *hso_dev =
2961 container_of(data, struct hso_device, async_get_intf);
2962 usb_autopm_get_interface(hso_dev->interface);
2963}
2964
2965static void async_put_intf(struct work_struct *data)
2966{
2967 struct hso_device *hso_dev =
2968 container_of(data, struct hso_device, async_put_intf);
2969 usb_autopm_put_interface(hso_dev->interface);
2970}
2971
2972static int hso_get_activity(struct hso_device *hso_dev)
2973{
2974 if (hso_dev->usb->state == USB_STATE_SUSPENDED) {
2975 if (!hso_dev->is_active) {
2976 hso_dev->is_active = 1;
2977 schedule_work(&hso_dev->async_get_intf);
2978 }
2979 }
2980
2981 if (hso_dev->usb->state != USB_STATE_CONFIGURED)
2982 return -EAGAIN;
2983
2984 usb_mark_last_busy(hso_dev->usb);
2985
2986 return 0;
2987}
2988
2989static int hso_put_activity(struct hso_device *hso_dev)
2990{
2991 if (hso_dev->usb->state != USB_STATE_SUSPENDED) {
2992 if (hso_dev->is_active) {
2993 hso_dev->is_active = 0;
2994 schedule_work(&hso_dev->async_put_intf);
2995 return -EAGAIN;
2996 }
2997 }
2998 hso_dev->is_active = 0;
2999 return 0;
3000}
3001
3002
3003static int hso_suspend(struct usb_interface *iface, pm_message_t message)
3004{
3005 int i, result;
3006
3007
3008 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3009 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3010 result = hso_stop_serial_device(serial_table[i]);
3011 if (result)
3012 goto out;
3013 }
3014 }
3015
3016
3017 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3018 if (network_table[i] &&
3019 (network_table[i]->interface == iface)) {
3020 result = hso_stop_net_device(network_table[i]);
3021 if (result)
3022 goto out;
3023 }
3024 }
3025
3026out:
3027 return 0;
3028}
3029
3030
3031static int hso_resume(struct usb_interface *iface)
3032{
3033 int i, result = 0;
3034 struct hso_net *hso_net;
3035
3036
3037 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3038 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3039 if (dev2ser(serial_table[i])->port.count) {
3040 result =
3041 hso_start_serial_device(serial_table[i], GFP_NOIO);
3042 hso_kick_transmit(dev2ser(serial_table[i]));
3043 if (result)
3044 goto out;
3045 }
3046 }
3047 }
3048
3049
3050 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3051 if (network_table[i] &&
3052 (network_table[i]->interface == iface)) {
3053 hso_net = dev2net(network_table[i]);
3054 if (hso_net->flags & IFF_UP) {
3055
3056
3057 if (hso_net->skb_tx_buf) {
3058 dev_dbg(&iface->dev,
3059 "Transmitting"
3060 " lingering data\n");
3061 hso_net_start_xmit(hso_net->skb_tx_buf,
3062 hso_net->net);
3063 hso_net->skb_tx_buf = NULL;
3064 }
3065 result = hso_start_net_device(network_table[i]);
3066 if (result)
3067 goto out;
3068 }
3069 }
3070 }
3071
3072out:
3073 return result;
3074}
3075
3076static void hso_serial_ref_free(struct kref *ref)
3077{
3078 struct hso_device *hso_dev = container_of(ref, struct hso_device, ref);
3079
3080 hso_free_serial_device(hso_dev);
3081}
3082
3083static void hso_free_interface(struct usb_interface *interface)
3084{
3085 struct hso_serial *serial;
3086 int i;
3087
3088 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3089 if (serial_table[i] &&
3090 (serial_table[i]->interface == interface)) {
3091 serial = dev2ser(serial_table[i]);
3092 tty_port_tty_hangup(&serial->port, false);
3093 mutex_lock(&serial->parent->mutex);
3094 serial->parent->usb_gone = 1;
3095 mutex_unlock(&serial->parent->mutex);
3096 cancel_work_sync(&serial_table[i]->async_put_intf);
3097 cancel_work_sync(&serial_table[i]->async_get_intf);
3098 hso_serial_tty_unregister(serial);
3099 kref_put(&serial_table[i]->ref, hso_serial_ref_free);
3100 set_serial_by_index(i, NULL);
3101 }
3102 }
3103
3104 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3105 if (network_table[i] &&
3106 (network_table[i]->interface == interface)) {
3107 struct rfkill *rfk = dev2net(network_table[i])->rfkill;
3108
3109
3110 netif_stop_queue(dev2net(network_table[i])->net);
3111 hso_stop_net_device(network_table[i]);
3112 cancel_work_sync(&network_table[i]->async_put_intf);
3113 cancel_work_sync(&network_table[i]->async_get_intf);
3114 if (rfk) {
3115 rfkill_unregister(rfk);
3116 rfkill_destroy(rfk);
3117 }
3118 hso_free_net_device(network_table[i]);
3119 }
3120 }
3121}
3122
3123
3124
3125
3126static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
3127 int type, int dir)
3128{
3129 int i;
3130 struct usb_host_interface *iface = intf->cur_altsetting;
3131 struct usb_endpoint_descriptor *endp;
3132
3133 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3134 endp = &iface->endpoint[i].desc;
3135 if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) &&
3136 (usb_endpoint_type(endp) == type))
3137 return endp;
3138 }
3139
3140 return NULL;
3141}
3142
3143
3144static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports)
3145{
3146 int i;
3147 struct usb_host_interface *iface = intf->cur_altsetting;
3148
3149 if (iface->extralen == 3) {
3150 *ports = iface->extra[2];
3151 return 0;
3152 }
3153
3154 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3155 if (iface->endpoint[i].extralen == 3) {
3156 *ports = iface->endpoint[i].extra[2];
3157 return 0;
3158 }
3159 }
3160
3161 return -1;
3162}
3163
3164
3165static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int,
3166 struct usb_device *usb, gfp_t gfp)
3167{
3168 int result;
3169
3170 usb_fill_int_urb(shared_int->shared_intr_urb, usb,
3171 usb_rcvintpipe(usb,
3172 shared_int->intr_endp->bEndpointAddress & 0x7F),
3173 shared_int->shared_intr_buf,
3174 1,
3175 intr_callback, shared_int,
3176 shared_int->intr_endp->bInterval);
3177
3178 result = usb_submit_urb(shared_int->shared_intr_urb, gfp);
3179 if (result)
3180 dev_warn(&usb->dev, "%s failed mux_intr_urb %d\n", __func__,
3181 result);
3182
3183 return result;
3184}
3185
3186
3187static const struct tty_operations hso_serial_ops = {
3188 .open = hso_serial_open,
3189 .close = hso_serial_close,
3190 .write = hso_serial_write,
3191 .write_room = hso_serial_write_room,
3192 .cleanup = hso_serial_cleanup,
3193 .ioctl = hso_serial_ioctl,
3194 .set_termios = hso_serial_set_termios,
3195 .chars_in_buffer = hso_serial_chars_in_buffer,
3196 .tiocmget = hso_serial_tiocmget,
3197 .tiocmset = hso_serial_tiocmset,
3198 .get_icount = hso_get_count,
3199 .unthrottle = hso_unthrottle
3200};
3201
3202static struct usb_driver hso_driver = {
3203 .name = driver_name,
3204 .probe = hso_probe,
3205 .disconnect = hso_disconnect,
3206 .id_table = hso_ids,
3207 .suspend = hso_suspend,
3208 .resume = hso_resume,
3209 .reset_resume = hso_resume,
3210 .supports_autosuspend = 1,
3211 .disable_hub_initiated_lpm = 1,
3212};
3213
3214static int __init hso_init(void)
3215{
3216 int i;
3217 int result;
3218
3219
3220 pr_info("%s\n", version);
3221
3222
3223 spin_lock_init(&serial_table_lock);
3224 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++)
3225 serial_table[i] = NULL;
3226
3227
3228 tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS);
3229 if (!tty_drv)
3230 return -ENOMEM;
3231
3232
3233 tty_drv->driver_name = driver_name;
3234 tty_drv->name = tty_filename;
3235
3236
3237 if (tty_major)
3238 tty_drv->major = tty_major;
3239
3240 tty_drv->minor_start = 0;
3241 tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
3242 tty_drv->subtype = SERIAL_TYPE_NORMAL;
3243 tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
3244 tty_drv->init_termios = tty_std_termios;
3245 hso_init_termios(&tty_drv->init_termios);
3246 tty_set_operations(tty_drv, &hso_serial_ops);
3247
3248
3249 result = tty_register_driver(tty_drv);
3250 if (result) {
3251 pr_err("%s - tty_register_driver failed(%d)\n",
3252 __func__, result);
3253 goto err_free_tty;
3254 }
3255
3256
3257 result = usb_register(&hso_driver);
3258 if (result) {
3259 pr_err("Could not register hso driver - error: %d\n", result);
3260 goto err_unreg_tty;
3261 }
3262
3263
3264 return 0;
3265err_unreg_tty:
3266 tty_unregister_driver(tty_drv);
3267err_free_tty:
3268 put_tty_driver(tty_drv);
3269 return result;
3270}
3271
3272static void __exit hso_exit(void)
3273{
3274 pr_info("unloaded\n");
3275
3276 tty_unregister_driver(tty_drv);
3277
3278 usb_deregister(&hso_driver);
3279 put_tty_driver(tty_drv);
3280}
3281
3282
3283module_init(hso_init);
3284module_exit(hso_exit);
3285
3286MODULE_AUTHOR(MOD_AUTHOR);
3287MODULE_DESCRIPTION(MOD_DESCRIPTION);
3288MODULE_LICENSE("GPL");
3289
3290
3291MODULE_PARM_DESC(debug, "debug level mask [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
3292module_param(debug, int, 0644);
3293
3294
3295MODULE_PARM_DESC(tty_major, "Set the major tty number");
3296module_param(tty_major, int, 0644);
3297
3298
3299MODULE_PARM_DESC(disable_net, "Disable the network interface");
3300module_param(disable_net, int, 0644);
3301
