1 /******************************************************************************
3 * Driver for Option High Speed Mobile Devices.
5 * Copyright (C) 2008 Option International
6 * Filip Aben <f.aben@option.com>
7 * Denis Joseph Barrow <d.barow@option.com>
8 * Jan Dumon <j.dumon@option.com>
9 * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd)
10 * <ajb@spheresystems.co.uk>
11 * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
12 * Copyright (C) 2008 Novell, Inc.
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
29 *****************************************************************************/
31 /******************************************************************************
33 * Description of the device:
35 * Interface 0: Contains the IP network interface on the bulk end points.
36 * The multiplexed serial ports are using the interrupt and
38 * Interrupt contains a bitmap telling which multiplexed
39 * serialport needs servicing.
41 * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the
42 * port is opened, as this have a huge impact on the network port
45 * Interface 2: Standard modem interface - circuit switched interface, this
46 * can be used to make a standard ppp connection however it
47 * should not be used in conjunction with the IP network interface
48 * enabled for USB performance reasons i.e. if using this set
49 * ideally disable_net=1.
51 *****************************************************************************/
53 #include <linux/sched.h>
54 #include <linux/slab.h>
55 #include <linux/init.h>
56 #include <linux/delay.h>
57 #include <linux/netdevice.h>
58 #include <linux/module.h>
59 #include <linux/ethtool.h>
60 #include <linux/usb.h>
61 #include <linux/timer.h>
62 #include <linux/tty.h>
63 #include <linux/tty_driver.h>
64 #include <linux/tty_flip.h>
65 #include <linux/kmod.h>
66 #include <linux/rfkill.h>
68 #include <linux/uaccess.h>
69 #include <linux/usb/cdc.h>
71 #include <asm/byteorder.h>
72 #include <linux/serial_core.h>
73 #include <linux/serial.h>
76 #define MOD_AUTHOR "Option Wireless"
77 #define MOD_DESCRIPTION "USB High Speed Option driver"
78 #define MOD_LICENSE "GPL"
80 #define HSO_MAX_NET_DEVICES 10
81 #define HSO__MAX_MTU 2048
82 #define DEFAULT_MTU 1500
83 #define DEFAULT_MRU 1500
85 #define CTRL_URB_RX_SIZE 1024
86 #define CTRL_URB_TX_SIZE 64
88 #define BULK_URB_RX_SIZE 4096
89 #define BULK_URB_TX_SIZE 8192
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
96 /* These definitions are used with the struct hso_net flags element */
97 /* - use *_bit operations on it. (bit indices not values.) */
98 #define HSO_NET_RUNNING 0
100 #define HSO_NET_TX_TIMEOUT (HZ*10)
102 #define HSO_SERIAL_MAGIC 0x48534f31
104 /* Number of ttys to handle */
105 #define HSO_SERIAL_TTY_MINORS 256
107 #define MAX_RX_URBS 2
109 static inline struct hso_serial
*get_serial_by_tty(struct tty_struct
*tty
)
112 return tty
->driver_data
;
116 /*****************************************************************************/
117 /* Debugging functions */
118 /*****************************************************************************/
119 #define D__(lvl_, fmt, arg...) \
121 printk(lvl_ "[%d:%s]: " fmt "\n", \
122 __LINE__, __func__, ## arg); \
125 #define D_(lvl, args...) \
128 D__(KERN_INFO, args); \
131 #define D1(args...) D_(0x01, ##args)
132 #define D2(args...) D_(0x02, ##args)
133 #define D3(args...) D_(0x04, ##args)
134 #define D4(args...) D_(0x08, ##args)
135 #define D5(args...) D_(0x10, ##args)
137 /*****************************************************************************/
139 /*****************************************************************************/
140 enum pkt_parse_state
{
146 /*****************************************************************************/
148 /*****************************************************************************/
150 struct hso_shared_int
{
151 struct usb_endpoint_descriptor
*intr_endp
;
152 void *shared_intr_buf
;
153 struct urb
*shared_intr_urb
;
154 struct usb_device
*usb
;
157 struct mutex shared_int_lock
;
161 struct hso_device
*parent
;
162 struct net_device
*net
;
163 struct rfkill
*rfkill
;
165 struct usb_endpoint_descriptor
*in_endp
;
166 struct usb_endpoint_descriptor
*out_endp
;
168 struct urb
*mux_bulk_rx_urb_pool
[MUX_BULK_RX_BUF_COUNT
];
169 struct urb
*mux_bulk_tx_urb
;
170 void *mux_bulk_rx_buf_pool
[MUX_BULK_RX_BUF_COUNT
];
171 void *mux_bulk_tx_buf
;
173 struct sk_buff
*skb_rx_buf
;
174 struct sk_buff
*skb_tx_buf
;
176 enum pkt_parse_state rx_parse_state
;
179 unsigned short rx_buf_size
;
180 unsigned short rx_buf_missing
;
181 struct iphdr rx_ip_hdr
;
192 #define BM_REQUEST_TYPE (0xa1)
193 #define B_NOTIFICATION (0x20)
194 #define W_VALUE (0x0)
195 #define W_INDEX (0x2)
196 #define W_LENGTH (0x2)
198 #define B_OVERRUN (0x1<<6)
199 #define B_PARITY (0x1<<5)
200 #define B_FRAMING (0x1<<4)
201 #define B_RING_SIGNAL (0x1<<3)
202 #define B_BREAK (0x1<<2)
203 #define B_TX_CARRIER (0x1<<1)
204 #define B_RX_CARRIER (0x1<<0)
206 struct hso_serial_state_notification
{
212 u16 UART_state_bitmap
;
215 struct hso_tiocmget
{
217 wait_queue_head_t waitq
;
219 struct usb_endpoint_descriptor
*endp
;
221 struct hso_serial_state_notification serial_state_notification
;
222 u16 prev_UART_state_bitmap
;
223 struct uart_icount icount
;
228 struct hso_device
*parent
;
232 struct hso_shared_int
*shared_int
;
234 /* rx/tx urb could be either a bulk urb or a control urb depending
235 on which serial port it is used on. */
236 struct urb
*rx_urb
[MAX_RX_URBS
];
238 u8
*rx_data
[MAX_RX_URBS
];
239 u16 rx_data_length
; /* should contain allocated length */
244 u16 tx_data_length
; /* should contain allocated length */
247 struct usb_ctrlrequest ctrl_req_tx
;
248 struct usb_ctrlrequest ctrl_req_rx
;
250 struct usb_endpoint_descriptor
*in_endp
;
251 struct usb_endpoint_descriptor
*out_endp
;
253 enum rx_ctrl_state rx_state
;
256 unsigned tx_urb_used
:1;
258 /* from usb_serial_port */
259 struct tty_struct
*tty
;
261 spinlock_t serial_lock
;
263 int (*write_data
) (struct hso_serial
*serial
);
264 struct hso_tiocmget
*tiocmget
;
265 /* Hacks required to get flow control
266 * working on the serial receive buffers
267 * so as not to drop characters on the floor.
270 u16 curr_rx_urb_offset
;
271 u8 rx_urb_filled
[MAX_RX_URBS
];
272 struct tasklet_struct unthrottle_tasklet
;
273 struct work_struct retry_unthrottle_workqueue
;
278 struct hso_serial
*dev_serial
;
279 struct hso_net
*dev_net
;
286 struct work_struct async_get_intf
;
287 struct work_struct async_put_intf
;
288 struct work_struct reset_device
;
290 struct usb_device
*usb
;
291 struct usb_interface
*interface
;
298 /* Type of interface */
299 #define HSO_INTF_MASK 0xFF00
300 #define HSO_INTF_MUX 0x0100
301 #define HSO_INTF_BULK 0x0200
304 #define HSO_PORT_MASK 0xFF
305 #define HSO_PORT_NO_PORT 0x0
306 #define HSO_PORT_CONTROL 0x1
307 #define HSO_PORT_APP 0x2
308 #define HSO_PORT_GPS 0x3
309 #define HSO_PORT_PCSC 0x4
310 #define HSO_PORT_APP2 0x5
311 #define HSO_PORT_GPS_CONTROL 0x6
312 #define HSO_PORT_MSD 0x7
313 #define HSO_PORT_VOICE 0x8
314 #define HSO_PORT_DIAG2 0x9
315 #define HSO_PORT_DIAG 0x10
316 #define HSO_PORT_MODEM 0x11
317 #define HSO_PORT_NETWORK 0x12
319 /* Additional device info */
320 #define HSO_INFO_MASK 0xFF000000
321 #define HSO_INFO_CRC_BUG 0x01000000
323 /*****************************************************************************/
325 /*****************************************************************************/
326 /* Serial driver functions */
327 static int hso_serial_tiocmset(struct tty_struct
*tty
, struct file
*file
,
328 unsigned int set
, unsigned int clear
);
329 static void ctrl_callback(struct urb
*urb
);
330 static int put_rxbuf_data(struct urb
*urb
, struct hso_serial
*serial
);
331 static void hso_kick_transmit(struct hso_serial
*serial
);
332 /* Helper functions */
333 static int hso_mux_submit_intr_urb(struct hso_shared_int
*mux_int
,
334 struct usb_device
*usb
, gfp_t gfp
);
335 static void handle_usb_error(int status
, const char *function
,
336 struct hso_device
*hso_dev
);
337 static struct usb_endpoint_descriptor
*hso_get_ep(struct usb_interface
*intf
,
339 static int hso_get_mux_ports(struct usb_interface
*intf
, unsigned char *ports
);
340 static void hso_free_interface(struct usb_interface
*intf
);
341 static int hso_start_serial_device(struct hso_device
*hso_dev
, gfp_t flags
);
342 static int hso_stop_serial_device(struct hso_device
*hso_dev
);
343 static int hso_start_net_device(struct hso_device
*hso_dev
);
344 static void hso_free_shared_int(struct hso_shared_int
*shared_int
);
345 static int hso_stop_net_device(struct hso_device
*hso_dev
);
346 static void hso_serial_ref_free(struct kref
*ref
);
347 static void hso_std_serial_read_bulk_callback(struct urb
*urb
);
348 static int hso_mux_serial_read(struct hso_serial
*serial
);
349 static void async_get_intf(struct work_struct
*data
);
350 static void async_put_intf(struct work_struct
*data
);
351 static int hso_put_activity(struct hso_device
*hso_dev
);
352 static int hso_get_activity(struct hso_device
*hso_dev
);
353 static void tiocmget_intr_callback(struct urb
*urb
);
354 static void reset_device(struct work_struct
*data
);
355 /*****************************************************************************/
356 /* Helping functions */
357 /*****************************************************************************/
361 static inline struct hso_net
*dev2net(struct hso_device
*hso_dev
)
363 return hso_dev
->port_data
.dev_net
;
366 static inline struct hso_serial
*dev2ser(struct hso_device
*hso_dev
)
368 return hso_dev
->port_data
.dev_serial
;
371 /* Debugging functions */
373 static void dbg_dump(int line_count
, const char *func_name
, unsigned char *buf
,
376 static char name
[255];
378 sprintf(name
, "hso[%d:%s]", line_count
, func_name
);
379 print_hex_dump_bytes(name
, DUMP_PREFIX_NONE
, buf
, len
);
382 #define DUMP(buf_, len_) \
383 dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_)
385 #define DUMP1(buf_, len_) \
391 #define DUMP(buf_, len_)
392 #define DUMP1(buf_, len_)
395 /* module parameters */
397 static int tty_major
;
398 static int disable_net
;
401 static const char driver_name
[] = "hso";
402 static const char tty_filename
[] = "ttyHS";
403 static const char *version
= __FILE__
": " MOD_AUTHOR
;
404 /* the usb driver itself (registered in hso_init) */
405 static struct usb_driver hso_driver
;
406 /* serial structures */
407 static struct tty_driver
*tty_drv
;
408 static struct hso_device
*serial_table
[HSO_SERIAL_TTY_MINORS
];
409 static struct hso_device
*network_table
[HSO_MAX_NET_DEVICES
];
410 static spinlock_t serial_table_lock
;
412 static const s32 default_port_spec
[] = {
413 HSO_INTF_MUX
| HSO_PORT_NETWORK
,
414 HSO_INTF_BULK
| HSO_PORT_DIAG
,
415 HSO_INTF_BULK
| HSO_PORT_MODEM
,
419 static const s32 icon321_port_spec
[] = {
420 HSO_INTF_MUX
| HSO_PORT_NETWORK
,
421 HSO_INTF_BULK
| HSO_PORT_DIAG2
,
422 HSO_INTF_BULK
| HSO_PORT_MODEM
,
423 HSO_INTF_BULK
| HSO_PORT_DIAG
,
427 #define default_port_device(vendor, product) \
428 USB_DEVICE(vendor, product), \
429 .driver_info = (kernel_ulong_t)default_port_spec
431 #define icon321_port_device(vendor, product) \
432 USB_DEVICE(vendor, product), \
433 .driver_info = (kernel_ulong_t)icon321_port_spec
435 /* list of devices we support */
436 static const struct usb_device_id hso_ids
[] = {
437 {default_port_device(0x0af0, 0x6711)},
438 {default_port_device(0x0af0, 0x6731)},
439 {default_port_device(0x0af0, 0x6751)},
440 {default_port_device(0x0af0, 0x6771)},
441 {default_port_device(0x0af0, 0x6791)},
442 {default_port_device(0x0af0, 0x6811)},
443 {default_port_device(0x0af0, 0x6911)},
444 {default_port_device(0x0af0, 0x6951)},
445 {default_port_device(0x0af0, 0x6971)},
446 {default_port_device(0x0af0, 0x7011)},
447 {default_port_device(0x0af0, 0x7031)},
448 {default_port_device(0x0af0, 0x7051)},
449 {default_port_device(0x0af0, 0x7071)},
450 {default_port_device(0x0af0, 0x7111)},
451 {default_port_device(0x0af0, 0x7211)},
452 {default_port_device(0x0af0, 0x7251)},
453 {default_port_device(0x0af0, 0x7271)},
454 {default_port_device(0x0af0, 0x7311)},
455 {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */
456 {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */
457 {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */
458 {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */
459 {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */
460 {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */
461 {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */
462 {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */
463 {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */
464 {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */
465 {USB_DEVICE(0x0af0, 0x7701)},
466 {USB_DEVICE(0x0af0, 0x7706)},
467 {USB_DEVICE(0x0af0, 0x7801)},
468 {USB_DEVICE(0x0af0, 0x7901)},
469 {USB_DEVICE(0x0af0, 0x7A01)},
470 {USB_DEVICE(0x0af0, 0x7A05)},
471 {USB_DEVICE(0x0af0, 0x8200)},
472 {USB_DEVICE(0x0af0, 0x8201)},
473 {USB_DEVICE(0x0af0, 0x8300)},
474 {USB_DEVICE(0x0af0, 0x8302)},
475 {USB_DEVICE(0x0af0, 0x8304)},
476 {USB_DEVICE(0x0af0, 0x8400)},
477 {USB_DEVICE(0x0af0, 0x8600)},
478 {USB_DEVICE(0x0af0, 0x8800)},
479 {USB_DEVICE(0x0af0, 0x8900)},
480 {USB_DEVICE(0x0af0, 0x9000)},
481 {USB_DEVICE(0x0af0, 0xd035)},
482 {USB_DEVICE(0x0af0, 0xd055)},
483 {USB_DEVICE(0x0af0, 0xd155)},
484 {USB_DEVICE(0x0af0, 0xd255)},
485 {USB_DEVICE(0x0af0, 0xd057)},
486 {USB_DEVICE(0x0af0, 0xd157)},
487 {USB_DEVICE(0x0af0, 0xd257)},
488 {USB_DEVICE(0x0af0, 0xd357)},
489 {USB_DEVICE(0x0af0, 0xd058)},
490 {USB_DEVICE(0x0af0, 0xc100)},
493 MODULE_DEVICE_TABLE(usb
, hso_ids
);
495 /* Sysfs attribute */
496 static ssize_t
hso_sysfs_show_porttype(struct device
*dev
,
497 struct device_attribute
*attr
,
500 struct hso_device
*hso_dev
= dev_get_drvdata(dev
);
506 switch (hso_dev
->port_spec
& HSO_PORT_MASK
) {
507 case HSO_PORT_CONTROL
:
508 port_name
= "Control";
511 port_name
= "Application";
514 port_name
= "Application2";
519 case HSO_PORT_GPS_CONTROL
:
520 port_name
= "GPS Control";
526 port_name
= "Diagnostic";
529 port_name
= "Diagnostic2";
534 case HSO_PORT_NETWORK
:
535 port_name
= "Network";
538 port_name
= "Unknown";
542 return sprintf(buf
, "%s\n", port_name
);
544 static DEVICE_ATTR(hsotype
, S_IRUGO
, hso_sysfs_show_porttype
, NULL
);
546 static int hso_urb_to_index(struct hso_serial
*serial
, struct urb
*urb
)
550 for (idx
= 0; idx
< serial
->num_rx_urbs
; idx
++)
551 if (serial
->rx_urb
[idx
] == urb
)
553 dev_err(serial
->parent
->dev
, "hso_urb_to_index failed\n");
557 /* converts mux value to a port spec value */
558 static u32
hso_mux_to_port(int mux
)
564 result
= HSO_PORT_CONTROL
;
567 result
= HSO_PORT_APP
;
570 result
= HSO_PORT_PCSC
;
573 result
= HSO_PORT_GPS
;
576 result
= HSO_PORT_APP2
;
579 result
= HSO_PORT_NO_PORT
;
584 /* converts port spec value to a mux value */
585 static u32
hso_port_to_mux(int port
)
589 switch (port
& HSO_PORT_MASK
) {
590 case HSO_PORT_CONTROL
:
611 static struct hso_serial
*get_serial_by_shared_int_and_type(
612 struct hso_shared_int
*shared_int
,
617 port
= hso_mux_to_port(mux
);
619 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
620 if (serial_table
[i
] &&
621 (dev2ser(serial_table
[i
])->shared_int
== shared_int
) &&
622 ((serial_table
[i
]->port_spec
& HSO_PORT_MASK
) == port
)) {
623 return dev2ser(serial_table
[i
]);
630 static struct hso_serial
*get_serial_by_index(unsigned index
)
632 struct hso_serial
*serial
= NULL
;
635 spin_lock_irqsave(&serial_table_lock
, flags
);
636 if (serial_table
[index
])
637 serial
= dev2ser(serial_table
[index
]);
638 spin_unlock_irqrestore(&serial_table_lock
, flags
);
643 static int get_free_serial_index(void)
648 spin_lock_irqsave(&serial_table_lock
, flags
);
649 for (index
= 0; index
< HSO_SERIAL_TTY_MINORS
; index
++) {
650 if (serial_table
[index
] == NULL
) {
651 spin_unlock_irqrestore(&serial_table_lock
, flags
);
655 spin_unlock_irqrestore(&serial_table_lock
, flags
);
657 printk(KERN_ERR
"%s: no free serial devices in table\n", __func__
);
661 static void set_serial_by_index(unsigned index
, struct hso_serial
*serial
)
665 spin_lock_irqsave(&serial_table_lock
, flags
);
667 serial_table
[index
] = serial
->parent
;
669 serial_table
[index
] = NULL
;
670 spin_unlock_irqrestore(&serial_table_lock
, flags
);
673 static void handle_usb_error(int status
, const char *function
,
674 struct hso_device
*hso_dev
)
680 explanation
= "no device";
683 explanation
= "endpoint not enabled";
686 explanation
= "endpoint stalled";
689 explanation
= "not enough bandwidth";
692 explanation
= "device disabled";
695 explanation
= "device suspended";
701 explanation
= "internal error";
707 explanation
= "protocol error";
709 schedule_work(&hso_dev
->reset_device
);
712 explanation
= "unknown status";
716 /* log a meaningful explanation of an USB status */
717 D1("%s: received USB status - %s (%d)", function
, explanation
, status
);
720 /* Network interface functions */
722 /* called when net interface is brought up by ifconfig */
723 static int hso_net_open(struct net_device
*net
)
725 struct hso_net
*odev
= netdev_priv(net
);
726 unsigned long flags
= 0;
729 dev_err(&net
->dev
, "No net device !\n");
733 odev
->skb_tx_buf
= NULL
;
735 /* setup environment */
736 spin_lock_irqsave(&odev
->net_lock
, flags
);
737 odev
->rx_parse_state
= WAIT_IP
;
738 odev
->rx_buf_size
= 0;
739 odev
->rx_buf_missing
= sizeof(struct iphdr
);
740 spin_unlock_irqrestore(&odev
->net_lock
, flags
);
742 /* We are up and running. */
743 set_bit(HSO_NET_RUNNING
, &odev
->flags
);
744 hso_start_net_device(odev
->parent
);
746 /* Tell the kernel we are ready to start receiving from it */
747 netif_start_queue(net
);
752 /* called when interface is brought down by ifconfig */
753 static int hso_net_close(struct net_device
*net
)
755 struct hso_net
*odev
= netdev_priv(net
);
757 /* we don't need the queue anymore */
758 netif_stop_queue(net
);
759 /* no longer running */
760 clear_bit(HSO_NET_RUNNING
, &odev
->flags
);
762 hso_stop_net_device(odev
->parent
);
768 /* USB tells is xmit done, we should start the netqueue again */
769 static void write_bulk_callback(struct urb
*urb
)
771 struct hso_net
*odev
= urb
->context
;
772 int status
= urb
->status
;
775 if (!odev
|| !test_bit(HSO_NET_RUNNING
, &odev
->flags
)) {
776 dev_err(&urb
->dev
->dev
, "%s: device not running\n", __func__
);
780 /* Do we still have a valid kernel network device? */
781 if (!netif_device_present(odev
->net
)) {
782 dev_err(&urb
->dev
->dev
, "%s: net device not present\n",
787 /* log status, but don't act on it, we don't need to resubmit anything
790 handle_usb_error(status
, __func__
, odev
->parent
);
792 hso_put_activity(odev
->parent
);
794 /* Tell the network interface we are ready for another frame */
795 netif_wake_queue(odev
->net
);
798 /* called by kernel when we need to transmit a packet */
799 static netdev_tx_t
hso_net_start_xmit(struct sk_buff
*skb
,
800 struct net_device
*net
)
802 struct hso_net
*odev
= netdev_priv(net
);
805 /* Tell the kernel, "No more frames 'til we are done with this one." */
806 netif_stop_queue(net
);
807 if (hso_get_activity(odev
->parent
) == -EAGAIN
) {
808 odev
->skb_tx_buf
= skb
;
813 DUMP1(skb
->data
, skb
->len
);
814 /* Copy it from kernel memory to OUR memory */
815 memcpy(odev
->mux_bulk_tx_buf
, skb
->data
, skb
->len
);
816 D1("len: %d/%d", skb
->len
, MUX_BULK_TX_BUF_SIZE
);
818 /* Fill in the URB for shipping it out. */
819 usb_fill_bulk_urb(odev
->mux_bulk_tx_urb
,
821 usb_sndbulkpipe(odev
->parent
->usb
,
823 bEndpointAddress
& 0x7F),
824 odev
->mux_bulk_tx_buf
, skb
->len
, write_bulk_callback
,
827 /* Deal with the Zero Length packet problem, I hope */
828 odev
->mux_bulk_tx_urb
->transfer_flags
|= URB_ZERO_PACKET
;
830 /* Send the URB on its merry way. */
831 result
= usb_submit_urb(odev
->mux_bulk_tx_urb
, GFP_ATOMIC
);
833 dev_warn(&odev
->parent
->interface
->dev
,
834 "failed mux_bulk_tx_urb %d\n", result
);
835 net
->stats
.tx_errors
++;
836 netif_start_queue(net
);
838 net
->stats
.tx_packets
++;
839 net
->stats
.tx_bytes
+= skb
->len
;
846 static void hso_get_drvinfo(struct net_device
*net
, struct ethtool_drvinfo
*info
)
848 struct hso_net
*odev
= netdev_priv(net
);
850 strncpy(info
->driver
, driver_name
, ETHTOOL_BUSINFO_LEN
);
851 usb_make_path(odev
->parent
->usb
, info
->bus_info
, sizeof info
->bus_info
);
854 static const struct ethtool_ops ops
= {
855 .get_drvinfo
= hso_get_drvinfo
,
856 .get_link
= ethtool_op_get_link
859 /* called when a packet did not ack after watchdogtimeout */
860 static void hso_net_tx_timeout(struct net_device
*net
)
862 struct hso_net
*odev
= netdev_priv(net
);
867 /* Tell syslog we are hosed. */
868 dev_warn(&net
->dev
, "Tx timed out.\n");
870 /* Tear the waiting frame off the list */
871 if (odev
->mux_bulk_tx_urb
&&
872 (odev
->mux_bulk_tx_urb
->status
== -EINPROGRESS
))
873 usb_unlink_urb(odev
->mux_bulk_tx_urb
);
875 /* Update statistics */
876 net
->stats
.tx_errors
++;
879 /* make a real packet from the received USB buffer */
880 static void packetizeRx(struct hso_net
*odev
, unsigned char *ip_pkt
,
881 unsigned int count
, unsigned char is_eop
)
883 unsigned short temp_bytes
;
884 unsigned short buffer_offset
= 0;
885 unsigned short frame_len
;
886 unsigned char *tmp_rx_buf
;
889 D1("Rx %d bytes", count
);
890 DUMP(ip_pkt
, min(128, (int)count
));
893 switch (odev
->rx_parse_state
) {
895 /* waiting for IP header. */
896 /* wanted bytes - size of ip header */
899 odev
->rx_buf_missing
) ? count
: odev
->
902 memcpy(((unsigned char *)(&odev
->rx_ip_hdr
)) +
903 odev
->rx_buf_size
, ip_pkt
+ buffer_offset
,
906 odev
->rx_buf_size
+= temp_bytes
;
907 buffer_offset
+= temp_bytes
;
908 odev
->rx_buf_missing
-= temp_bytes
;
911 if (!odev
->rx_buf_missing
) {
912 /* header is complete allocate an sk_buffer and
913 * continue to WAIT_DATA */
914 frame_len
= ntohs(odev
->rx_ip_hdr
.tot_len
);
916 if ((frame_len
> DEFAULT_MRU
) ||
917 (frame_len
< sizeof(struct iphdr
))) {
918 dev_err(&odev
->net
->dev
,
919 "Invalid frame (%d) length\n",
921 odev
->rx_parse_state
= WAIT_SYNC
;
924 /* Allocate an sk_buff */
925 odev
->skb_rx_buf
= netdev_alloc_skb(odev
->net
,
927 if (!odev
->skb_rx_buf
) {
928 /* We got no receive buffer. */
929 D1("could not allocate memory");
930 odev
->rx_parse_state
= WAIT_SYNC
;
934 /* Copy what we got so far. make room for iphdr
937 skb_put(odev
->skb_rx_buf
,
938 sizeof(struct iphdr
));
939 memcpy(tmp_rx_buf
, (char *)&(odev
->rx_ip_hdr
),
940 sizeof(struct iphdr
));
943 odev
->rx_buf_size
= sizeof(struct iphdr
);
945 /* Filip actually use .tot_len */
946 odev
->rx_buf_missing
=
947 frame_len
- sizeof(struct iphdr
);
948 odev
->rx_parse_state
= WAIT_DATA
;
953 temp_bytes
= (count
< odev
->rx_buf_missing
)
954 ? count
: odev
->rx_buf_missing
;
956 /* Copy the rest of the bytes that are left in the
957 * buffer into the waiting sk_buf. */
958 /* Make room for temp_bytes after tail. */
959 tmp_rx_buf
= skb_put(odev
->skb_rx_buf
, temp_bytes
);
960 memcpy(tmp_rx_buf
, ip_pkt
+ buffer_offset
, temp_bytes
);
962 odev
->rx_buf_missing
-= temp_bytes
;
964 buffer_offset
+= temp_bytes
;
965 odev
->rx_buf_size
+= temp_bytes
;
966 if (!odev
->rx_buf_missing
) {
967 /* Packet is complete. Inject into stack. */
968 /* We have IP packet here */
969 odev
->skb_rx_buf
->protocol
= cpu_to_be16(ETH_P_IP
);
971 odev
->skb_rx_buf
->ip_summed
=
972 CHECKSUM_UNNECESSARY
;
974 skb_reset_mac_header(odev
->skb_rx_buf
);
976 /* Ship it off to the kernel */
977 netif_rx(odev
->skb_rx_buf
);
978 /* No longer our buffer. */
979 odev
->skb_rx_buf
= NULL
;
981 /* update out statistics */
982 odev
->net
->stats
.rx_packets
++;
984 odev
->net
->stats
.rx_bytes
+= odev
->rx_buf_size
;
986 odev
->rx_buf_size
= 0;
987 odev
->rx_buf_missing
= sizeof(struct iphdr
);
988 odev
->rx_parse_state
= WAIT_IP
;
1003 /* Recovery mechanism for WAIT_SYNC state. */
1005 if (odev
->rx_parse_state
== WAIT_SYNC
) {
1006 odev
->rx_parse_state
= WAIT_IP
;
1007 odev
->rx_buf_size
= 0;
1008 odev
->rx_buf_missing
= sizeof(struct iphdr
);
1013 /* Moving data from usb to kernel (in interrupt state) */
1014 static void read_bulk_callback(struct urb
*urb
)
1016 struct hso_net
*odev
= urb
->context
;
1017 struct net_device
*net
;
1019 int status
= urb
->status
;
1021 /* is al ok? (Filip: Who's Al ?) */
1023 handle_usb_error(status
, __func__
, odev
->parent
);
1028 if (!odev
|| !test_bit(HSO_NET_RUNNING
, &odev
->flags
)) {
1029 D1("BULK IN callback but driver is not active!");
1032 usb_mark_last_busy(urb
->dev
);
1036 if (!netif_device_present(net
)) {
1037 /* Somebody killed our network interface... */
1041 if (odev
->parent
->port_spec
& HSO_INFO_CRC_BUG
) {
1043 u8 crc_check
[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1044 rest
= urb
->actual_length
%
1045 le16_to_cpu(odev
->in_endp
->wMaxPacketSize
);
1046 if (((rest
== 5) || (rest
== 6)) &&
1047 !memcmp(((u8
*) urb
->transfer_buffer
) +
1048 urb
->actual_length
- 4, crc_check
, 4)) {
1049 urb
->actual_length
-= 4;
1053 /* do we even have a packet? */
1054 if (urb
->actual_length
) {
1055 /* Handle the IP stream, add header and push it onto network
1056 * stack if the packet is complete. */
1057 spin_lock(&odev
->net_lock
);
1058 packetizeRx(odev
, urb
->transfer_buffer
, urb
->actual_length
,
1059 (urb
->transfer_buffer_length
>
1060 urb
->actual_length
) ? 1 : 0);
1061 spin_unlock(&odev
->net_lock
);
1064 /* We are done with this URB, resubmit it. Prep the USB to wait for
1065 * another frame. Reuse same as received. */
1066 usb_fill_bulk_urb(urb
,
1068 usb_rcvbulkpipe(odev
->parent
->usb
,
1070 bEndpointAddress
& 0x7F),
1071 urb
->transfer_buffer
, MUX_BULK_RX_BUF_SIZE
,
1072 read_bulk_callback
, odev
);
1074 /* Give this to the USB subsystem so it can tell us when more data
1076 result
= usb_submit_urb(urb
, GFP_ATOMIC
);
1078 dev_warn(&odev
->parent
->interface
->dev
,
1079 "%s failed submit mux_bulk_rx_urb %d\n", __func__
,
1083 /* Serial driver functions */
1085 static void hso_init_termios(struct ktermios
*termios
)
1088 * The default requirements for this device are:
1091 ~(IGNBRK
/* disable ignore break */
1092 | BRKINT
/* disable break causes interrupt */
1093 | PARMRK
/* disable mark parity errors */
1094 | ISTRIP
/* disable clear high bit of input characters */
1095 | INLCR
/* disable translate NL to CR */
1096 | IGNCR
/* disable ignore CR */
1097 | ICRNL
/* disable translate CR to NL */
1098 | IXON
); /* disable enable XON/XOFF flow control */
1100 /* disable postprocess output characters */
1101 termios
->c_oflag
&= ~OPOST
;
1104 ~(ECHO
/* disable echo input characters */
1105 | ECHONL
/* disable echo new line */
1106 | ICANON
/* disable erase, kill, werase, and rprnt
1107 special characters */
1108 | ISIG
/* disable interrupt, quit, and suspend special
1110 | IEXTEN
); /* disable non-POSIX special characters */
1113 ~(CSIZE
/* no size */
1114 | PARENB
/* disable parity bit */
1115 | CBAUD
/* clear current baud rate */
1116 | CBAUDEX
); /* clear current buad rate */
1118 termios
->c_cflag
|= CS8
; /* character size 8 bits */
1120 /* baud rate 115200 */
1121 tty_termios_encode_baud_rate(termios
, 115200, 115200);
1124 static void _hso_serial_set_termios(struct tty_struct
*tty
,
1125 struct ktermios
*old
)
1127 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1128 struct ktermios
*termios
;
1131 printk(KERN_ERR
"%s: no tty structures", __func__
);
1135 D4("port %d", serial
->minor
);
1138 * Fix up unsupported bits
1140 termios
= tty
->termios
;
1141 termios
->c_iflag
&= ~IXON
; /* disable enable XON/XOFF flow control */
1144 ~(CSIZE
/* no size */
1145 | PARENB
/* disable parity bit */
1146 | CBAUD
/* clear current baud rate */
1147 | CBAUDEX
); /* clear current buad rate */
1149 termios
->c_cflag
|= CS8
; /* character size 8 bits */
1151 /* baud rate 115200 */
1152 tty_encode_baud_rate(tty
, 115200, 115200);
1155 static void hso_resubmit_rx_bulk_urb(struct hso_serial
*serial
, struct urb
*urb
)
1158 /* We are done with this URB, resubmit it. Prep the USB to wait for
1160 usb_fill_bulk_urb(urb
, serial
->parent
->usb
,
1161 usb_rcvbulkpipe(serial
->parent
->usb
,
1163 bEndpointAddress
& 0x7F),
1164 urb
->transfer_buffer
, serial
->rx_data_length
,
1165 hso_std_serial_read_bulk_callback
, serial
);
1166 /* Give this to the USB subsystem so it can tell us when more data
1168 result
= usb_submit_urb(urb
, GFP_ATOMIC
);
1170 dev_err(&urb
->dev
->dev
, "%s failed submit serial rx_urb %d\n",
1178 static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial
*serial
)
1181 struct urb
*curr_urb
;
1183 while (serial
->rx_urb_filled
[serial
->curr_rx_urb_idx
]) {
1184 curr_urb
= serial
->rx_urb
[serial
->curr_rx_urb_idx
];
1185 count
= put_rxbuf_data(curr_urb
, serial
);
1189 serial
->curr_rx_urb_idx
++;
1190 if (serial
->curr_rx_urb_idx
>= serial
->num_rx_urbs
)
1191 serial
->curr_rx_urb_idx
= 0;
1192 hso_resubmit_rx_bulk_urb(serial
, curr_urb
);
1197 static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial
*serial
)
1202 urb
= serial
->rx_urb
[0];
1203 if (serial
->open_count
> 0) {
1204 count
= put_rxbuf_data(urb
, serial
);
1208 /* Re issue a read as long as we receive data. */
1210 if (count
== 0 && ((urb
->actual_length
!= 0) ||
1211 (serial
->rx_state
== RX_PENDING
))) {
1212 serial
->rx_state
= RX_SENT
;
1213 hso_mux_serial_read(serial
);
1215 serial
->rx_state
= RX_IDLE
;
1219 /* read callback for Diag and CS port */
1220 static void hso_std_serial_read_bulk_callback(struct urb
*urb
)
1222 struct hso_serial
*serial
= urb
->context
;
1223 int status
= urb
->status
;
1227 D1("serial == NULL");
1229 } else if (status
) {
1230 handle_usb_error(status
, __func__
, serial
->parent
);
1234 D4("\n--- Got serial_read_bulk callback %02x ---", status
);
1235 D1("Actual length = %d\n", urb
->actual_length
);
1236 DUMP1(urb
->transfer_buffer
, urb
->actual_length
);
1238 /* Anyone listening? */
1239 if (serial
->open_count
== 0)
1243 if (serial
->parent
->port_spec
& HSO_INFO_CRC_BUG
) {
1245 u8 crc_check
[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1247 urb
->actual_length
%
1248 le16_to_cpu(serial
->in_endp
->wMaxPacketSize
);
1249 if (((rest
== 5) || (rest
== 6)) &&
1250 !memcmp(((u8
*) urb
->transfer_buffer
) +
1251 urb
->actual_length
- 4, crc_check
, 4)) {
1252 urb
->actual_length
-= 4;
1255 /* Valid data, handle RX data */
1256 spin_lock(&serial
->serial_lock
);
1257 serial
->rx_urb_filled
[hso_urb_to_index(serial
, urb
)] = 1;
1258 put_rxbuf_data_and_resubmit_bulk_urb(serial
);
1259 spin_unlock(&serial
->serial_lock
);
1260 } else if (status
== -ENOENT
|| status
== -ECONNRESET
) {
1261 /* Unlinked - check for throttled port. */
1262 D2("Port %d, successfully unlinked urb", serial
->minor
);
1263 spin_lock(&serial
->serial_lock
);
1264 serial
->rx_urb_filled
[hso_urb_to_index(serial
, urb
)] = 0;
1265 hso_resubmit_rx_bulk_urb(serial
, urb
);
1266 spin_unlock(&serial
->serial_lock
);
1268 D2("Port %d, status = %d for read urb", serial
->minor
, status
);
1274 * This needs to be a tasklet otherwise we will
1275 * end up recursively calling this function.
1277 static void hso_unthrottle_tasklet(struct hso_serial
*serial
)
1279 unsigned long flags
;
1281 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1282 if ((serial
->parent
->port_spec
& HSO_INTF_MUX
))
1283 put_rxbuf_data_and_resubmit_ctrl_urb(serial
);
1285 put_rxbuf_data_and_resubmit_bulk_urb(serial
);
1286 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1289 static void hso_unthrottle(struct tty_struct
*tty
)
1291 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1293 tasklet_hi_schedule(&serial
->unthrottle_tasklet
);
1296 static void hso_unthrottle_workfunc(struct work_struct
*work
)
1298 struct hso_serial
*serial
=
1299 container_of(work
, struct hso_serial
,
1300 retry_unthrottle_workqueue
);
1301 hso_unthrottle_tasklet(serial
);
1304 /* open the requested serial port */
1305 static int hso_serial_open(struct tty_struct
*tty
, struct file
*filp
)
1307 struct hso_serial
*serial
= get_serial_by_index(tty
->index
);
1311 if (serial
== NULL
|| serial
->magic
!= HSO_SERIAL_MAGIC
) {
1313 tty
->driver_data
= NULL
;
1314 D1("Failed to open port");
1318 mutex_lock(&serial
->parent
->mutex
);
1319 result
= usb_autopm_get_interface(serial
->parent
->interface
);
1323 D1("Opening %d", serial
->minor
);
1324 kref_get(&serial
->parent
->ref
);
1327 spin_lock_irq(&serial
->serial_lock
);
1328 tty
->driver_data
= serial
;
1329 tty_kref_put(serial
->tty
);
1330 serial
->tty
= tty_kref_get(tty
);
1331 spin_unlock_irq(&serial
->serial_lock
);
1333 /* check for port already opened, if not set the termios */
1334 serial
->open_count
++;
1335 if (serial
->open_count
== 1) {
1336 serial
->rx_state
= RX_IDLE
;
1337 /* Force default termio settings */
1338 _hso_serial_set_termios(tty
, NULL
);
1339 tasklet_init(&serial
->unthrottle_tasklet
,
1340 (void (*)(unsigned long))hso_unthrottle_tasklet
,
1341 (unsigned long)serial
);
1342 INIT_WORK(&serial
->retry_unthrottle_workqueue
,
1343 hso_unthrottle_workfunc
);
1344 result
= hso_start_serial_device(serial
->parent
, GFP_KERNEL
);
1346 hso_stop_serial_device(serial
->parent
);
1347 serial
->open_count
--;
1348 kref_put(&serial
->parent
->ref
, hso_serial_ref_free
);
1351 D1("Port was already open");
1354 usb_autopm_put_interface(serial
->parent
->interface
);
1358 hso_serial_tiocmset(tty
, NULL
, TIOCM_RTS
| TIOCM_DTR
, 0);
1360 mutex_unlock(&serial
->parent
->mutex
);
1364 /* close the requested serial port */
1365 static void hso_serial_close(struct tty_struct
*tty
, struct file
*filp
)
1367 struct hso_serial
*serial
= tty
->driver_data
;
1370 D1("Closing serial port");
1372 /* Open failed, no close cleanup required */
1376 mutex_lock(&serial
->parent
->mutex
);
1377 usb_gone
= serial
->parent
->usb_gone
;
1380 usb_autopm_get_interface(serial
->parent
->interface
);
1382 /* reset the rts and dtr */
1383 /* do the actual close */
1384 serial
->open_count
--;
1386 if (serial
->open_count
<= 0) {
1387 serial
->open_count
= 0;
1388 spin_lock_irq(&serial
->serial_lock
);
1389 if (serial
->tty
== tty
) {
1390 serial
->tty
->driver_data
= NULL
;
1394 spin_unlock_irq(&serial
->serial_lock
);
1396 hso_stop_serial_device(serial
->parent
);
1397 tasklet_kill(&serial
->unthrottle_tasklet
);
1398 cancel_work_sync(&serial
->retry_unthrottle_workqueue
);
1402 usb_autopm_put_interface(serial
->parent
->interface
);
1404 mutex_unlock(&serial
->parent
->mutex
);
1406 kref_put(&serial
->parent
->ref
, hso_serial_ref_free
);
1409 /* close the requested serial port */
1410 static int hso_serial_write(struct tty_struct
*tty
, const unsigned char *buf
,
1413 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1414 int space
, tx_bytes
;
1415 unsigned long flags
;
1418 if (serial
== NULL
) {
1419 printk(KERN_ERR
"%s: serial is NULL\n", __func__
);
1423 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1425 space
= serial
->tx_data_length
- serial
->tx_buffer_count
;
1426 tx_bytes
= (count
< space
) ? count
: space
;
1431 memcpy(serial
->tx_buffer
+ serial
->tx_buffer_count
, buf
, tx_bytes
);
1432 serial
->tx_buffer_count
+= tx_bytes
;
1435 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1437 hso_kick_transmit(serial
);
1442 /* how much room is there for writing */
1443 static int hso_serial_write_room(struct tty_struct
*tty
)
1445 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1447 unsigned long flags
;
1449 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1450 room
= serial
->tx_data_length
- serial
->tx_buffer_count
;
1451 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1453 /* return free room */
1457 /* setup the term */
1458 static void hso_serial_set_termios(struct tty_struct
*tty
, struct ktermios
*old
)
1460 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1461 unsigned long flags
;
1464 D5("Termios called with: cflags new[%d] - old[%d]",
1465 tty
->termios
->c_cflag
, old
->c_cflag
);
1467 /* the actual setup */
1468 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1469 if (serial
->open_count
)
1470 _hso_serial_set_termios(tty
, old
);
1473 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1478 /* how many characters in the buffer */
1479 static int hso_serial_chars_in_buffer(struct tty_struct
*tty
)
1481 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1483 unsigned long flags
;
1489 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1490 chars
= serial
->tx_buffer_count
;
1491 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1495 static int tiocmget_submit_urb(struct hso_serial
*serial
,
1496 struct hso_tiocmget
*tiocmget
,
1497 struct usb_device
*usb
)
1501 if (serial
->parent
->usb_gone
)
1503 usb_fill_int_urb(tiocmget
->urb
, usb
,
1506 bEndpointAddress
& 0x7F),
1507 &tiocmget
->serial_state_notification
,
1508 sizeof(struct hso_serial_state_notification
),
1509 tiocmget_intr_callback
, serial
,
1510 tiocmget
->endp
->bInterval
);
1511 result
= usb_submit_urb(tiocmget
->urb
, GFP_ATOMIC
);
1513 dev_warn(&usb
->dev
, "%s usb_submit_urb failed %d\n", __func__
,
1520 static void tiocmget_intr_callback(struct urb
*urb
)
1522 struct hso_serial
*serial
= urb
->context
;
1523 struct hso_tiocmget
*tiocmget
;
1524 int status
= urb
->status
;
1525 u16 UART_state_bitmap
, prev_UART_state_bitmap
;
1526 struct uart_icount
*icount
;
1527 struct hso_serial_state_notification
*serial_state_notification
;
1528 struct usb_device
*usb
;
1534 handle_usb_error(status
, __func__
, serial
->parent
);
1537 tiocmget
= serial
->tiocmget
;
1540 usb
= serial
->parent
->usb
;
1541 serial_state_notification
= &tiocmget
->serial_state_notification
;
1542 if (serial_state_notification
->bmRequestType
!= BM_REQUEST_TYPE
||
1543 serial_state_notification
->bNotification
!= B_NOTIFICATION
||
1544 le16_to_cpu(serial_state_notification
->wValue
) != W_VALUE
||
1545 le16_to_cpu(serial_state_notification
->wIndex
) != W_INDEX
||
1546 le16_to_cpu(serial_state_notification
->wLength
) != W_LENGTH
) {
1548 "hso received invalid serial state notification\n");
1549 DUMP(serial_state_notification
,
1550 sizeof(struct hso_serial_state_notification
));
1553 UART_state_bitmap
= le16_to_cpu(serial_state_notification
->
1555 prev_UART_state_bitmap
= tiocmget
->prev_UART_state_bitmap
;
1556 icount
= &tiocmget
->icount
;
1557 spin_lock(&serial
->serial_lock
);
1558 if ((UART_state_bitmap
& B_OVERRUN
) !=
1559 (prev_UART_state_bitmap
& B_OVERRUN
))
1561 if ((UART_state_bitmap
& B_PARITY
) !=
1562 (prev_UART_state_bitmap
& B_PARITY
))
1564 if ((UART_state_bitmap
& B_FRAMING
) !=
1565 (prev_UART_state_bitmap
& B_FRAMING
))
1567 if ((UART_state_bitmap
& B_RING_SIGNAL
) &&
1568 !(prev_UART_state_bitmap
& B_RING_SIGNAL
))
1570 if ((UART_state_bitmap
& B_BREAK
) !=
1571 (prev_UART_state_bitmap
& B_BREAK
))
1573 if ((UART_state_bitmap
& B_TX_CARRIER
) !=
1574 (prev_UART_state_bitmap
& B_TX_CARRIER
))
1576 if ((UART_state_bitmap
& B_RX_CARRIER
) !=
1577 (prev_UART_state_bitmap
& B_RX_CARRIER
))
1579 tiocmget
->prev_UART_state_bitmap
= UART_state_bitmap
;
1580 spin_unlock(&serial
->serial_lock
);
1581 tiocmget
->intr_completed
= 1;
1582 wake_up_interruptible(&tiocmget
->waitq
);
1584 memset(serial_state_notification
, 0,
1585 sizeof(struct hso_serial_state_notification
));
1586 tiocmget_submit_urb(serial
,
1588 serial
->parent
->usb
);
1592 * next few functions largely stolen from drivers/serial/serial_core.c
1594 /* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1595 * - mask passed in arg for lines of interest
1596 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1597 * Caller should use TIOCGICOUNT to see which one it was
1600 hso_wait_modem_status(struct hso_serial
*serial
, unsigned long arg
)
1602 DECLARE_WAITQUEUE(wait
, current
);
1603 struct uart_icount cprev
, cnow
;
1604 struct hso_tiocmget
*tiocmget
;
1607 tiocmget
= serial
->tiocmget
;
1611 * note the counters on entry
1613 spin_lock_irq(&serial
->serial_lock
);
1614 memcpy(&cprev
, &tiocmget
->icount
, sizeof(struct uart_icount
));
1615 spin_unlock_irq(&serial
->serial_lock
);
1616 add_wait_queue(&tiocmget
->waitq
, &wait
);
1618 spin_lock_irq(&serial
->serial_lock
);
1619 memcpy(&cnow
, &tiocmget
->icount
, sizeof(struct uart_icount
));
1620 spin_unlock_irq(&serial
->serial_lock
);
1621 set_current_state(TASK_INTERRUPTIBLE
);
1622 if (((arg
& TIOCM_RNG
) && (cnow
.rng
!= cprev
.rng
)) ||
1623 ((arg
& TIOCM_DSR
) && (cnow
.dsr
!= cprev
.dsr
)) ||
1624 ((arg
& TIOCM_CD
) && (cnow
.dcd
!= cprev
.dcd
))) {
1629 /* see if a signal did it */
1630 if (signal_pending(current
)) {
1636 current
->state
= TASK_RUNNING
;
1637 remove_wait_queue(&tiocmget
->waitq
, &wait
);
1643 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
1644 * Return: write counters to the user passed counter struct
1645 * NB: both 1->0 and 0->1 transitions are counted except for
1646 * RI where only 0->1 is counted.
1648 static int hso_get_count(struct hso_serial
*serial
,
1649 struct serial_icounter_struct __user
*icnt
)
1651 struct serial_icounter_struct icount
;
1652 struct uart_icount cnow
;
1653 struct hso_tiocmget
*tiocmget
= serial
->tiocmget
;
1655 memset(&icount
, 0, sizeof(struct serial_icounter_struct
));
1659 spin_lock_irq(&serial
->serial_lock
);
1660 memcpy(&cnow
, &tiocmget
->icount
, sizeof(struct uart_icount
));
1661 spin_unlock_irq(&serial
->serial_lock
);
1663 icount
.cts
= cnow
.cts
;
1664 icount
.dsr
= cnow
.dsr
;
1665 icount
.rng
= cnow
.rng
;
1666 icount
.dcd
= cnow
.dcd
;
1667 icount
.rx
= cnow
.rx
;
1668 icount
.tx
= cnow
.tx
;
1669 icount
.frame
= cnow
.frame
;
1670 icount
.overrun
= cnow
.overrun
;
1671 icount
.parity
= cnow
.parity
;
1672 icount
.brk
= cnow
.brk
;
1673 icount
.buf_overrun
= cnow
.buf_overrun
;
1675 return copy_to_user(icnt
, &icount
, sizeof(icount
)) ? -EFAULT
: 0;
1679 static int hso_serial_tiocmget(struct tty_struct
*tty
, struct file
*file
)
1682 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1683 struct hso_tiocmget
*tiocmget
;
1684 u16 UART_state_bitmap
;
1688 D1("no tty structures");
1691 spin_lock_irq(&serial
->serial_lock
);
1692 retval
= ((serial
->rts_state
) ? TIOCM_RTS
: 0) |
1693 ((serial
->dtr_state
) ? TIOCM_DTR
: 0);
1694 tiocmget
= serial
->tiocmget
;
1697 UART_state_bitmap
= le16_to_cpu(
1698 tiocmget
->prev_UART_state_bitmap
);
1699 if (UART_state_bitmap
& B_RING_SIGNAL
)
1700 retval
|= TIOCM_RNG
;
1701 if (UART_state_bitmap
& B_RX_CARRIER
)
1703 if (UART_state_bitmap
& B_TX_CARRIER
)
1704 retval
|= TIOCM_DSR
;
1706 spin_unlock_irq(&serial
->serial_lock
);
1710 static int hso_serial_tiocmset(struct tty_struct
*tty
, struct file
*file
,
1711 unsigned int set
, unsigned int clear
)
1714 unsigned long flags
;
1716 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1720 D1("no tty structures");
1724 if ((serial
->parent
->port_spec
& HSO_PORT_MASK
) != HSO_PORT_MODEM
)
1727 if_num
= serial
->parent
->interface
->altsetting
->desc
.bInterfaceNumber
;
1729 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1730 if (set
& TIOCM_RTS
)
1731 serial
->rts_state
= 1;
1732 if (set
& TIOCM_DTR
)
1733 serial
->dtr_state
= 1;
1735 if (clear
& TIOCM_RTS
)
1736 serial
->rts_state
= 0;
1737 if (clear
& TIOCM_DTR
)
1738 serial
->dtr_state
= 0;
1740 if (serial
->dtr_state
)
1742 if (serial
->rts_state
)
1745 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1747 return usb_control_msg(serial
->parent
->usb
,
1748 usb_rcvctrlpipe(serial
->parent
->usb
, 0), 0x22,
1749 0x21, val
, if_num
, NULL
, 0,
1750 USB_CTRL_SET_TIMEOUT
);
1753 static int hso_serial_ioctl(struct tty_struct
*tty
, struct file
*file
,
1754 unsigned int cmd
, unsigned long arg
)
1756 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1757 void __user
*uarg
= (void __user
*)arg
;
1759 D4("IOCTL cmd: %d, arg: %ld", cmd
, arg
);
1765 ret
= hso_wait_modem_status(serial
, arg
);
1769 ret
= hso_get_count(serial
, uarg
);
1779 /* starts a transmit */
1780 static void hso_kick_transmit(struct hso_serial
*serial
)
1783 unsigned long flags
;
1786 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1787 if (!serial
->tx_buffer_count
)
1790 if (serial
->tx_urb_used
)
1793 /* Wakeup USB interface if necessary */
1794 if (hso_get_activity(serial
->parent
) == -EAGAIN
)
1797 /* Switch pointers around to avoid memcpy */
1798 temp
= serial
->tx_buffer
;
1799 serial
->tx_buffer
= serial
->tx_data
;
1800 serial
->tx_data
= temp
;
1801 serial
->tx_data_count
= serial
->tx_buffer_count
;
1802 serial
->tx_buffer_count
= 0;
1804 /* If temp is set, it means we switched buffers */
1805 if (temp
&& serial
->write_data
) {
1806 res
= serial
->write_data(serial
);
1808 serial
->tx_urb_used
= 1;
1811 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1814 /* make a request (for reading and writing data to muxed serial port) */
1815 static int mux_device_request(struct hso_serial
*serial
, u8 type
, u16 port
,
1816 struct urb
*ctrl_urb
,
1817 struct usb_ctrlrequest
*ctrl_req
,
1818 u8
*ctrl_urb_data
, u32 size
)
1824 if (!serial
|| !ctrl_urb
|| !ctrl_req
) {
1825 printk(KERN_ERR
"%s: Wrong arguments\n", __func__
);
1830 ctrl_req
->wValue
= 0;
1831 ctrl_req
->wIndex
= cpu_to_le16(hso_port_to_mux(port
));
1832 ctrl_req
->wLength
= cpu_to_le16(size
);
1834 if (type
== USB_CDC_GET_ENCAPSULATED_RESPONSE
) {
1835 /* Reading command */
1836 ctrl_req
->bRequestType
= USB_DIR_IN
|
1837 USB_TYPE_OPTION_VENDOR
|
1838 USB_RECIP_INTERFACE
;
1839 ctrl_req
->bRequest
= USB_CDC_GET_ENCAPSULATED_RESPONSE
;
1840 pipe
= usb_rcvctrlpipe(serial
->parent
->usb
, 0);
1842 /* Writing command */
1843 ctrl_req
->bRequestType
= USB_DIR_OUT
|
1844 USB_TYPE_OPTION_VENDOR
|
1845 USB_RECIP_INTERFACE
;
1846 ctrl_req
->bRequest
= USB_CDC_SEND_ENCAPSULATED_COMMAND
;
1847 pipe
= usb_sndctrlpipe(serial
->parent
->usb
, 0);
1850 D2("%s command (%02x) len: %d, port: %d",
1851 type
== USB_CDC_GET_ENCAPSULATED_RESPONSE
? "Read" : "Write",
1852 ctrl_req
->bRequestType
, ctrl_req
->wLength
, port
);
1855 ctrl_urb
->transfer_flags
= 0;
1856 usb_fill_control_urb(ctrl_urb
,
1857 serial
->parent
->usb
,
1860 ctrl_urb_data
, size
, ctrl_callback
, serial
);
1861 /* Send it on merry way */
1862 result
= usb_submit_urb(ctrl_urb
, GFP_ATOMIC
);
1864 dev_err(&ctrl_urb
->dev
->dev
,
1865 "%s failed submit ctrl_urb %d type %d\n", __func__
,
1874 /* called by intr_callback when read occurs */
1875 static int hso_mux_serial_read(struct hso_serial
*serial
)
1881 memset(serial
->rx_data
[0], 0, CTRL_URB_RX_SIZE
);
1882 /* make the request */
1884 if (serial
->num_rx_urbs
!= 1) {
1885 dev_err(&serial
->parent
->interface
->dev
,
1886 "ERROR: mux'd reads with multiple buffers "
1890 return mux_device_request(serial
,
1891 USB_CDC_GET_ENCAPSULATED_RESPONSE
,
1892 serial
->parent
->port_spec
& HSO_PORT_MASK
,
1894 &serial
->ctrl_req_rx
,
1895 serial
->rx_data
[0], serial
->rx_data_length
);
1898 /* used for muxed serial port callback (muxed serial read) */
1899 static void intr_callback(struct urb
*urb
)
1901 struct hso_shared_int
*shared_int
= urb
->context
;
1902 struct hso_serial
*serial
;
1903 unsigned char *port_req
;
1904 int status
= urb
->status
;
1907 usb_mark_last_busy(urb
->dev
);
1915 handle_usb_error(status
, __func__
, NULL
);
1918 D4("\n--- Got intr callback 0x%02X ---", status
);
1921 port_req
= urb
->transfer_buffer
;
1922 D4(" port_req = 0x%.2X\n", *port_req
);
1923 /* loop over all muxed ports to find the one sending this */
1924 for (i
= 0; i
< 8; i
++) {
1925 /* max 8 channels on MUX */
1926 if (*port_req
& (1 << i
)) {
1927 serial
= get_serial_by_shared_int_and_type(shared_int
,
1929 if (serial
!= NULL
) {
1930 D1("Pending read interrupt on port %d\n", i
);
1931 spin_lock(&serial
->serial_lock
);
1932 if (serial
->rx_state
== RX_IDLE
&&
1933 serial
->open_count
> 0) {
1934 /* Setup and send a ctrl req read on
1936 if (!serial
->rx_urb_filled
[0]) {
1937 serial
->rx_state
= RX_SENT
;
1938 hso_mux_serial_read(serial
);
1940 serial
->rx_state
= RX_PENDING
;
1942 D1("Already a read pending on "
1943 "port %d or port not open\n", i
);
1945 spin_unlock(&serial
->serial_lock
);
1949 /* Resubmit interrupt urb */
1950 hso_mux_submit_intr_urb(shared_int
, urb
->dev
, GFP_ATOMIC
);
1953 /* called for writing to muxed serial port */
1954 static int hso_mux_serial_write_data(struct hso_serial
*serial
)
1959 return mux_device_request(serial
,
1960 USB_CDC_SEND_ENCAPSULATED_COMMAND
,
1961 serial
->parent
->port_spec
& HSO_PORT_MASK
,
1963 &serial
->ctrl_req_tx
,
1964 serial
->tx_data
, serial
->tx_data_count
);
1967 /* write callback for Diag and CS port */
1968 static void hso_std_serial_write_bulk_callback(struct urb
*urb
)
1970 struct hso_serial
*serial
= urb
->context
;
1971 int status
= urb
->status
;
1972 struct tty_struct
*tty
;
1976 D1("serial == NULL");
1980 spin_lock(&serial
->serial_lock
);
1981 serial
->tx_urb_used
= 0;
1982 tty
= tty_kref_get(serial
->tty
);
1983 spin_unlock(&serial
->serial_lock
);
1985 handle_usb_error(status
, __func__
, serial
->parent
);
1989 hso_put_activity(serial
->parent
);
1994 hso_kick_transmit(serial
);
1999 /* called for writing diag or CS serial port */
2000 static int hso_std_serial_write_data(struct hso_serial
*serial
)
2002 int count
= serial
->tx_data_count
;
2005 usb_fill_bulk_urb(serial
->tx_urb
,
2006 serial
->parent
->usb
,
2007 usb_sndbulkpipe(serial
->parent
->usb
,
2009 bEndpointAddress
& 0x7F),
2010 serial
->tx_data
, serial
->tx_data_count
,
2011 hso_std_serial_write_bulk_callback
, serial
);
2013 result
= usb_submit_urb(serial
->tx_urb
, GFP_ATOMIC
);
2015 dev_warn(&serial
->parent
->usb
->dev
,
2016 "Failed to submit urb - res %d\n", result
);
2023 /* callback after read or write on muxed serial port */
2024 static void ctrl_callback(struct urb
*urb
)
2026 struct hso_serial
*serial
= urb
->context
;
2027 struct usb_ctrlrequest
*req
;
2028 int status
= urb
->status
;
2029 struct tty_struct
*tty
;
2035 spin_lock(&serial
->serial_lock
);
2036 serial
->tx_urb_used
= 0;
2037 tty
= tty_kref_get(serial
->tty
);
2038 spin_unlock(&serial
->serial_lock
);
2040 handle_usb_error(status
, __func__
, serial
->parent
);
2046 req
= (struct usb_ctrlrequest
*)(urb
->setup_packet
);
2047 D4("\n--- Got muxed ctrl callback 0x%02X ---", status
);
2048 D4("Actual length of urb = %d\n", urb
->actual_length
);
2049 DUMP1(urb
->transfer_buffer
, urb
->actual_length
);
2051 if (req
->bRequestType
==
2052 (USB_DIR_IN
| USB_TYPE_OPTION_VENDOR
| USB_RECIP_INTERFACE
)) {
2053 /* response to a read command */
2054 serial
->rx_urb_filled
[0] = 1;
2055 spin_lock(&serial
->serial_lock
);
2056 put_rxbuf_data_and_resubmit_ctrl_urb(serial
);
2057 spin_unlock(&serial
->serial_lock
);
2059 hso_put_activity(serial
->parent
);
2062 /* response to a write command */
2063 hso_kick_transmit(serial
);
2068 /* handle RX data for serial port */
2069 static int put_rxbuf_data(struct urb
*urb
, struct hso_serial
*serial
)
2071 struct tty_struct
*tty
;
2072 int write_length_remaining
= 0;
2076 if (urb
== NULL
|| serial
== NULL
) {
2077 D1("serial = NULL");
2081 /* All callers to put_rxbuf_data hold serial_lock */
2082 tty
= tty_kref_get(serial
->tty
);
2084 /* Push data to tty */
2086 write_length_remaining
= urb
->actual_length
-
2087 serial
->curr_rx_urb_offset
;
2088 D1("data to push to tty");
2089 while (write_length_remaining
) {
2090 if (test_bit(TTY_THROTTLED
, &tty
->flags
)) {
2094 curr_write_len
= tty_insert_flip_string
2095 (tty
, urb
->transfer_buffer
+
2096 serial
->curr_rx_urb_offset
,
2097 write_length_remaining
);
2098 serial
->curr_rx_urb_offset
+= curr_write_len
;
2099 write_length_remaining
-= curr_write_len
;
2100 tty_flip_buffer_push(tty
);
2103 if (write_length_remaining
== 0) {
2104 serial
->curr_rx_urb_offset
= 0;
2105 serial
->rx_urb_filled
[hso_urb_to_index(serial
, urb
)] = 0;
2108 return write_length_remaining
;
2112 /* Base driver functions */
2114 static void hso_log_port(struct hso_device
*hso_dev
)
2119 switch (hso_dev
->port_spec
& HSO_PORT_MASK
) {
2120 case HSO_PORT_CONTROL
:
2121 port_type
= "Control";
2124 port_type
= "Application";
2129 case HSO_PORT_GPS_CONTROL
:
2130 port_type
= "GPS control";
2133 port_type
= "Application2";
2139 port_type
= "Diagnostic";
2141 case HSO_PORT_DIAG2
:
2142 port_type
= "Diagnostic2";
2144 case HSO_PORT_MODEM
:
2145 port_type
= "Modem";
2147 case HSO_PORT_NETWORK
:
2148 port_type
= "Network";
2151 port_type
= "Unknown";
2154 if ((hso_dev
->port_spec
& HSO_PORT_MASK
) == HSO_PORT_NETWORK
) {
2155 sprintf(port_dev
, "%s", dev2net(hso_dev
)->net
->name
);
2157 sprintf(port_dev
, "/dev/%s%d", tty_filename
,
2158 dev2ser(hso_dev
)->minor
);
2160 dev_dbg(&hso_dev
->interface
->dev
, "HSO: Found %s port %s\n",
2161 port_type
, port_dev
);
2164 static int hso_start_net_device(struct hso_device
*hso_dev
)
2167 struct hso_net
*hso_net
= dev2net(hso_dev
);
2172 /* send URBs for all read buffers */
2173 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
2175 /* Prep a receive URB */
2176 usb_fill_bulk_urb(hso_net
->mux_bulk_rx_urb_pool
[i
],
2178 usb_rcvbulkpipe(hso_dev
->usb
,
2180 bEndpointAddress
& 0x7F),
2181 hso_net
->mux_bulk_rx_buf_pool
[i
],
2182 MUX_BULK_RX_BUF_SIZE
, read_bulk_callback
,
2185 /* Put it out there so the device can send us stuff */
2186 result
= usb_submit_urb(hso_net
->mux_bulk_rx_urb_pool
[i
],
2189 dev_warn(&hso_dev
->usb
->dev
,
2190 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__
,
2197 static int hso_stop_net_device(struct hso_device
*hso_dev
)
2200 struct hso_net
*hso_net
= dev2net(hso_dev
);
2205 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
2206 if (hso_net
->mux_bulk_rx_urb_pool
[i
])
2207 usb_kill_urb(hso_net
->mux_bulk_rx_urb_pool
[i
]);
2210 if (hso_net
->mux_bulk_tx_urb
)
2211 usb_kill_urb(hso_net
->mux_bulk_tx_urb
);
2216 static int hso_start_serial_device(struct hso_device
*hso_dev
, gfp_t flags
)
2219 struct hso_serial
*serial
= dev2ser(hso_dev
);
2224 /* If it is not the MUX port fill in and submit a bulk urb (already
2225 * allocated in hso_serial_start) */
2226 if (!(serial
->parent
->port_spec
& HSO_INTF_MUX
)) {
2227 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
2228 usb_fill_bulk_urb(serial
->rx_urb
[i
],
2229 serial
->parent
->usb
,
2230 usb_rcvbulkpipe(serial
->parent
->usb
,
2235 serial
->rx_data_length
,
2236 hso_std_serial_read_bulk_callback
,
2238 result
= usb_submit_urb(serial
->rx_urb
[i
], flags
);
2240 dev_warn(&serial
->parent
->usb
->dev
,
2241 "Failed to submit urb - res %d\n",
2247 mutex_lock(&serial
->shared_int
->shared_int_lock
);
2248 if (!serial
->shared_int
->use_count
) {
2250 hso_mux_submit_intr_urb(serial
->shared_int
,
2251 hso_dev
->usb
, flags
);
2253 serial
->shared_int
->use_count
++;
2254 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
2256 if (serial
->tiocmget
)
2257 tiocmget_submit_urb(serial
,
2259 serial
->parent
->usb
);
2263 static int hso_stop_serial_device(struct hso_device
*hso_dev
)
2266 struct hso_serial
*serial
= dev2ser(hso_dev
);
2267 struct hso_tiocmget
*tiocmget
;
2272 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
2273 if (serial
->rx_urb
[i
]) {
2274 usb_kill_urb(serial
->rx_urb
[i
]);
2275 serial
->rx_urb_filled
[i
] = 0;
2278 serial
->curr_rx_urb_idx
= 0;
2279 serial
->curr_rx_urb_offset
= 0;
2282 usb_kill_urb(serial
->tx_urb
);
2284 if (serial
->shared_int
) {
2285 mutex_lock(&serial
->shared_int
->shared_int_lock
);
2286 if (serial
->shared_int
->use_count
&&
2287 (--serial
->shared_int
->use_count
== 0)) {
2290 urb
= serial
->shared_int
->shared_intr_urb
;
2294 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
2296 tiocmget
= serial
->tiocmget
;
2298 wake_up_interruptible(&tiocmget
->waitq
);
2299 usb_kill_urb(tiocmget
->urb
);
2305 static void hso_serial_common_free(struct hso_serial
*serial
)
2309 if (serial
->parent
->dev
)
2310 device_remove_file(serial
->parent
->dev
, &dev_attr_hsotype
);
2312 tty_unregister_device(tty_drv
, serial
->minor
);
2314 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
2315 /* unlink and free RX URB */
2316 usb_free_urb(serial
->rx_urb
[i
]);
2317 /* free the RX buffer */
2318 kfree(serial
->rx_data
[i
]);
2321 /* unlink and free TX URB */
2322 usb_free_urb(serial
->tx_urb
);
2323 kfree(serial
->tx_data
);
2326 static int hso_serial_common_create(struct hso_serial
*serial
, int num_urbs
,
2327 int rx_size
, int tx_size
)
2333 minor
= get_free_serial_index();
2337 /* register our minor number */
2338 serial
->parent
->dev
= tty_register_device(tty_drv
, minor
,
2339 &serial
->parent
->interface
->dev
);
2340 dev
= serial
->parent
->dev
;
2341 dev_set_drvdata(dev
, serial
->parent
);
2342 i
= device_create_file(dev
, &dev_attr_hsotype
);
2344 /* fill in specific data for later use */
2345 serial
->minor
= minor
;
2346 serial
->magic
= HSO_SERIAL_MAGIC
;
2347 spin_lock_init(&serial
->serial_lock
);
2348 serial
->num_rx_urbs
= num_urbs
;
2350 /* RX, allocate urb and initialize */
2352 /* prepare our RX buffer */
2353 serial
->rx_data_length
= rx_size
;
2354 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
2355 serial
->rx_urb
[i
] = usb_alloc_urb(0, GFP_KERNEL
);
2356 if (!serial
->rx_urb
[i
]) {
2357 dev_err(dev
, "Could not allocate urb?\n");
2360 serial
->rx_urb
[i
]->transfer_buffer
= NULL
;
2361 serial
->rx_urb
[i
]->transfer_buffer_length
= 0;
2362 serial
->rx_data
[i
] = kzalloc(serial
->rx_data_length
,
2364 if (!serial
->rx_data
[i
]) {
2365 dev_err(dev
, "%s - Out of memory\n", __func__
);
2370 /* TX, allocate urb and initialize */
2371 serial
->tx_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2372 if (!serial
->tx_urb
) {
2373 dev_err(dev
, "Could not allocate urb?\n");
2376 serial
->tx_urb
->transfer_buffer
= NULL
;
2377 serial
->tx_urb
->transfer_buffer_length
= 0;
2378 /* prepare our TX buffer */
2379 serial
->tx_data_count
= 0;
2380 serial
->tx_buffer_count
= 0;
2381 serial
->tx_data_length
= tx_size
;
2382 serial
->tx_data
= kzalloc(serial
->tx_data_length
, GFP_KERNEL
);
2383 if (!serial
->tx_data
) {
2384 dev_err(dev
, "%s - Out of memory\n", __func__
);
2387 serial
->tx_buffer
= kzalloc(serial
->tx_data_length
, GFP_KERNEL
);
2388 if (!serial
->tx_buffer
) {
2389 dev_err(dev
, "%s - Out of memory\n", __func__
);
2395 hso_serial_common_free(serial
);
2399 /* Creates a general hso device */
2400 static struct hso_device
*hso_create_device(struct usb_interface
*intf
,
2403 struct hso_device
*hso_dev
;
2405 hso_dev
= kzalloc(sizeof(*hso_dev
), GFP_ATOMIC
);
2409 hso_dev
->port_spec
= port_spec
;
2410 hso_dev
->usb
= interface_to_usbdev(intf
);
2411 hso_dev
->interface
= intf
;
2412 kref_init(&hso_dev
->ref
);
2413 mutex_init(&hso_dev
->mutex
);
2415 INIT_WORK(&hso_dev
->async_get_intf
, async_get_intf
);
2416 INIT_WORK(&hso_dev
->async_put_intf
, async_put_intf
);
2417 INIT_WORK(&hso_dev
->reset_device
, reset_device
);
2422 /* Removes a network device in the network device table */
2423 static int remove_net_device(struct hso_device
*hso_dev
)
2427 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
2428 if (network_table
[i
] == hso_dev
) {
2429 network_table
[i
] = NULL
;
2433 if (i
== HSO_MAX_NET_DEVICES
)
2438 /* Frees our network device */
2439 static void hso_free_net_device(struct hso_device
*hso_dev
)
2442 struct hso_net
*hso_net
= dev2net(hso_dev
);
2447 remove_net_device(hso_net
->parent
);
2450 unregister_netdev(hso_net
->net
);
2451 free_netdev(hso_net
->net
);
2455 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
2456 usb_free_urb(hso_net
->mux_bulk_rx_urb_pool
[i
]);
2457 kfree(hso_net
->mux_bulk_rx_buf_pool
[i
]);
2458 hso_net
->mux_bulk_rx_buf_pool
[i
] = NULL
;
2460 usb_free_urb(hso_net
->mux_bulk_tx_urb
);
2461 kfree(hso_net
->mux_bulk_tx_buf
);
2462 hso_net
->mux_bulk_tx_buf
= NULL
;
2467 static const struct net_device_ops hso_netdev_ops
= {
2468 .ndo_open
= hso_net_open
,
2469 .ndo_stop
= hso_net_close
,
2470 .ndo_start_xmit
= hso_net_start_xmit
,
2471 .ndo_tx_timeout
= hso_net_tx_timeout
,
2474 /* initialize the network interface */
2475 static void hso_net_init(struct net_device
*net
)
2477 struct hso_net
*hso_net
= netdev_priv(net
);
2479 D1("sizeof hso_net is %d", (int)sizeof(*hso_net
));
2481 /* fill in the other fields */
2482 net
->netdev_ops
= &hso_netdev_ops
;
2483 net
->watchdog_timeo
= HSO_NET_TX_TIMEOUT
;
2484 net
->flags
= IFF_POINTOPOINT
| IFF_NOARP
| IFF_MULTICAST
;
2485 net
->type
= ARPHRD_NONE
;
2486 net
->mtu
= DEFAULT_MTU
- 14;
2487 net
->tx_queue_len
= 10;
2488 SET_ETHTOOL_OPS(net
, &ops
);
2490 /* and initialize the semaphore */
2491 spin_lock_init(&hso_net
->net_lock
);
2494 /* Adds a network device in the network device table */
2495 static int add_net_device(struct hso_device
*hso_dev
)
2499 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
2500 if (network_table
[i
] == NULL
) {
2501 network_table
[i
] = hso_dev
;
2505 if (i
== HSO_MAX_NET_DEVICES
)
2510 static int hso_rfkill_set_block(void *data
, bool blocked
)
2512 struct hso_device
*hso_dev
= data
;
2513 int enabled
= !blocked
;
2516 mutex_lock(&hso_dev
->mutex
);
2517 if (hso_dev
->usb_gone
)
2520 rv
= usb_control_msg(hso_dev
->usb
, usb_rcvctrlpipe(hso_dev
->usb
, 0),
2521 enabled
? 0x82 : 0x81, 0x40, 0, 0, NULL
, 0,
2522 USB_CTRL_SET_TIMEOUT
);
2523 mutex_unlock(&hso_dev
->mutex
);
2527 static const struct rfkill_ops hso_rfkill_ops
= {
2528 .set_block
= hso_rfkill_set_block
,
2531 /* Creates and sets up everything for rfkill */
2532 static void hso_create_rfkill(struct hso_device
*hso_dev
,
2533 struct usb_interface
*interface
)
2535 struct hso_net
*hso_net
= dev2net(hso_dev
);
2536 struct device
*dev
= &hso_net
->net
->dev
;
2539 rfkn
= kzalloc(20, GFP_KERNEL
);
2541 dev_err(dev
, "%s - Out of memory\n", __func__
);
2543 snprintf(rfkn
, 20, "hso-%d",
2544 interface
->altsetting
->desc
.bInterfaceNumber
);
2546 hso_net
->rfkill
= rfkill_alloc(rfkn
,
2547 &interface_to_usbdev(interface
)->dev
,
2549 &hso_rfkill_ops
, hso_dev
);
2550 if (!hso_net
->rfkill
) {
2551 dev_err(dev
, "%s - Out of memory\n", __func__
);
2555 if (rfkill_register(hso_net
->rfkill
) < 0) {
2556 rfkill_destroy(hso_net
->rfkill
);
2558 hso_net
->rfkill
= NULL
;
2559 dev_err(dev
, "%s - Failed to register rfkill\n", __func__
);
2564 static struct device_type hso_type
= {
2568 /* Creates our network device */
2569 static struct hso_device
*hso_create_net_device(struct usb_interface
*interface
,
2573 struct net_device
*net
;
2574 struct hso_net
*hso_net
;
2575 struct hso_device
*hso_dev
;
2577 hso_dev
= hso_create_device(interface
, port_spec
);
2581 /* allocate our network device, then we can put in our private data */
2582 /* call hso_net_init to do the basic initialization */
2583 net
= alloc_netdev(sizeof(struct hso_net
), "hso%d", hso_net_init
);
2585 dev_err(&interface
->dev
, "Unable to create ethernet device\n");
2589 hso_net
= netdev_priv(net
);
2591 hso_dev
->port_data
.dev_net
= hso_net
;
2593 hso_net
->parent
= hso_dev
;
2595 hso_net
->in_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
,
2597 if (!hso_net
->in_endp
) {
2598 dev_err(&interface
->dev
, "Can't find BULK IN endpoint\n");
2601 hso_net
->out_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
,
2603 if (!hso_net
->out_endp
) {
2604 dev_err(&interface
->dev
, "Can't find BULK OUT endpoint\n");
2607 SET_NETDEV_DEV(net
, &interface
->dev
);
2608 SET_NETDEV_DEVTYPE(net
, &hso_type
);
2610 /* registering our net device */
2611 result
= register_netdev(net
);
2613 dev_err(&interface
->dev
, "Failed to register device\n");
2617 /* start allocating */
2618 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
2619 hso_net
->mux_bulk_rx_urb_pool
[i
] = usb_alloc_urb(0, GFP_KERNEL
);
2620 if (!hso_net
->mux_bulk_rx_urb_pool
[i
]) {
2621 dev_err(&interface
->dev
, "Could not allocate rx urb\n");
2624 hso_net
->mux_bulk_rx_buf_pool
[i
] = kzalloc(MUX_BULK_RX_BUF_SIZE
,
2626 if (!hso_net
->mux_bulk_rx_buf_pool
[i
]) {
2627 dev_err(&interface
->dev
, "Could not allocate rx buf\n");
2631 hso_net
->mux_bulk_tx_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2632 if (!hso_net
->mux_bulk_tx_urb
) {
2633 dev_err(&interface
->dev
, "Could not allocate tx urb\n");
2636 hso_net
->mux_bulk_tx_buf
= kzalloc(MUX_BULK_TX_BUF_SIZE
, GFP_KERNEL
);
2637 if (!hso_net
->mux_bulk_tx_buf
) {
2638 dev_err(&interface
->dev
, "Could not allocate tx buf\n");
2642 add_net_device(hso_dev
);
2644 hso_log_port(hso_dev
);
2646 hso_create_rfkill(hso_dev
, interface
);
2650 hso_free_net_device(hso_dev
);
2654 static void hso_free_tiomget(struct hso_serial
*serial
)
2656 struct hso_tiocmget
*tiocmget
= serial
->tiocmget
;
2658 if (tiocmget
->urb
) {
2659 usb_free_urb(tiocmget
->urb
);
2660 tiocmget
->urb
= NULL
;
2662 serial
->tiocmget
= NULL
;
2668 /* Frees an AT channel ( goes for both mux and non-mux ) */
2669 static void hso_free_serial_device(struct hso_device
*hso_dev
)
2671 struct hso_serial
*serial
= dev2ser(hso_dev
);
2675 set_serial_by_index(serial
->minor
, NULL
);
2677 hso_serial_common_free(serial
);
2679 if (serial
->shared_int
) {
2680 mutex_lock(&serial
->shared_int
->shared_int_lock
);
2681 if (--serial
->shared_int
->ref_count
== 0)
2682 hso_free_shared_int(serial
->shared_int
);
2684 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
2686 hso_free_tiomget(serial
);
2691 /* Creates a bulk AT channel */
2692 static struct hso_device
*hso_create_bulk_serial_device(
2693 struct usb_interface
*interface
, int port
)
2695 struct hso_device
*hso_dev
;
2696 struct hso_serial
*serial
;
2698 struct hso_tiocmget
*tiocmget
;
2700 hso_dev
= hso_create_device(interface
, port
);
2704 serial
= kzalloc(sizeof(*serial
), GFP_KERNEL
);
2708 serial
->parent
= hso_dev
;
2709 hso_dev
->port_data
.dev_serial
= serial
;
2711 if ((port
& HSO_PORT_MASK
) == HSO_PORT_MODEM
) {
2713 serial
->tiocmget
= kzalloc(sizeof(struct hso_tiocmget
),
2715 /* it isn't going to break our heart if serial->tiocmget
2716 * allocation fails don't bother checking this.
2718 if (serial
->tiocmget
) {
2719 tiocmget
= serial
->tiocmget
;
2720 tiocmget
->urb
= usb_alloc_urb(0, GFP_KERNEL
);
2721 if (tiocmget
->urb
) {
2722 mutex_init(&tiocmget
->mutex
);
2723 init_waitqueue_head(&tiocmget
->waitq
);
2724 tiocmget
->endp
= hso_get_ep(
2726 USB_ENDPOINT_XFER_INT
,
2729 hso_free_tiomget(serial
);
2735 if (hso_serial_common_create(serial
, num_urbs
, BULK_URB_RX_SIZE
,
2739 serial
->in_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
,
2741 if (!serial
->in_endp
) {
2742 dev_err(&interface
->dev
, "Failed to find BULK IN ep\n");
2748 hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
, USB_DIR_OUT
))) {
2749 dev_err(&interface
->dev
, "Failed to find BULK IN ep\n");
2753 serial
->write_data
= hso_std_serial_write_data
;
2755 /* and record this serial */
2756 set_serial_by_index(serial
->minor
, serial
);
2758 /* setup the proc dirs and files if needed */
2759 hso_log_port(hso_dev
);
2761 /* done, return it */
2765 hso_serial_common_free(serial
);
2767 hso_free_tiomget(serial
);
2773 /* Creates a multiplexed AT channel */
2775 struct hso_device
*hso_create_mux_serial_device(struct usb_interface
*interface
,
2777 struct hso_shared_int
*mux
)
2779 struct hso_device
*hso_dev
;
2780 struct hso_serial
*serial
;
2783 port_spec
= HSO_INTF_MUX
;
2784 port_spec
&= ~HSO_PORT_MASK
;
2786 port_spec
|= hso_mux_to_port(port
);
2787 if ((port_spec
& HSO_PORT_MASK
) == HSO_PORT_NO_PORT
)
2790 hso_dev
= hso_create_device(interface
, port_spec
);
2794 serial
= kzalloc(sizeof(*serial
), GFP_KERNEL
);
2798 hso_dev
->port_data
.dev_serial
= serial
;
2799 serial
->parent
= hso_dev
;
2801 if (hso_serial_common_create
2802 (serial
, 1, CTRL_URB_RX_SIZE
, CTRL_URB_TX_SIZE
))
2805 serial
->tx_data_length
--;
2806 serial
->write_data
= hso_mux_serial_write_data
;
2808 serial
->shared_int
= mux
;
2809 mutex_lock(&serial
->shared_int
->shared_int_lock
);
2810 serial
->shared_int
->ref_count
++;
2811 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
2813 /* and record this serial */
2814 set_serial_by_index(serial
->minor
, serial
);
2816 /* setup the proc dirs and files if needed */
2817 hso_log_port(hso_dev
);
2819 /* done, return it */
2824 tty_unregister_device(tty_drv
, serial
->minor
);
2833 static void hso_free_shared_int(struct hso_shared_int
*mux
)
2835 usb_free_urb(mux
->shared_intr_urb
);
2836 kfree(mux
->shared_intr_buf
);
2837 mutex_unlock(&mux
->shared_int_lock
);
2842 struct hso_shared_int
*hso_create_shared_int(struct usb_interface
*interface
)
2844 struct hso_shared_int
*mux
= kzalloc(sizeof(*mux
), GFP_KERNEL
);
2849 mux
->intr_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_INT
,
2851 if (!mux
->intr_endp
) {
2852 dev_err(&interface
->dev
, "Can't find INT IN endpoint\n");
2856 mux
->shared_intr_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2857 if (!mux
->shared_intr_urb
) {
2858 dev_err(&interface
->dev
, "Could not allocate intr urb?\n");
2861 mux
->shared_intr_buf
=
2862 kzalloc(le16_to_cpu(mux
->intr_endp
->wMaxPacketSize
),
2864 if (!mux
->shared_intr_buf
) {
2865 dev_err(&interface
->dev
, "Could not allocate intr buf?\n");
2869 mutex_init(&mux
->shared_int_lock
);
2874 kfree(mux
->shared_intr_buf
);
2875 usb_free_urb(mux
->shared_intr_urb
);
2880 /* Gets the port spec for a certain interface */
2881 static int hso_get_config_data(struct usb_interface
*interface
)
2883 struct usb_device
*usbdev
= interface_to_usbdev(interface
);
2885 u32 if_num
= interface
->altsetting
->desc
.bInterfaceNumber
;
2888 if (usb_control_msg(usbdev
, usb_rcvctrlpipe(usbdev
, 0),
2889 0x86, 0xC0, 0, 0, config_data
, 17,
2890 USB_CTRL_SET_TIMEOUT
) != 0x11) {
2894 switch (config_data
[if_num
]) {
2899 result
= HSO_PORT_DIAG
;
2902 result
= HSO_PORT_GPS
;
2905 result
= HSO_PORT_GPS_CONTROL
;
2908 result
= HSO_PORT_APP
;
2911 result
= HSO_PORT_APP2
;
2914 result
= HSO_PORT_CONTROL
;
2917 result
= HSO_PORT_NETWORK
;
2920 result
= HSO_PORT_MODEM
;
2923 result
= HSO_PORT_MSD
;
2926 result
= HSO_PORT_PCSC
;
2929 result
= HSO_PORT_VOICE
;
2936 result
|= HSO_INTF_BULK
;
2938 if (config_data
[16] & 0x1)
2939 result
|= HSO_INFO_CRC_BUG
;
2944 /* called once for each interface upon device insertion */
2945 static int hso_probe(struct usb_interface
*interface
,
2946 const struct usb_device_id
*id
)
2948 int mux
, i
, if_num
, port_spec
;
2949 unsigned char port_mask
;
2950 struct hso_device
*hso_dev
= NULL
;
2951 struct hso_shared_int
*shared_int
;
2952 struct hso_device
*tmp_dev
= NULL
;
2954 if_num
= interface
->altsetting
->desc
.bInterfaceNumber
;
2956 /* Get the interface/port specification from either driver_info or from
2957 * the device itself */
2958 if (id
->driver_info
)
2959 port_spec
= ((u32
*)(id
->driver_info
))[if_num
];
2961 port_spec
= hso_get_config_data(interface
);
2963 if (interface
->cur_altsetting
->desc
.bInterfaceClass
!= 0xFF) {
2964 dev_err(&interface
->dev
, "Not our interface\n");
2967 /* Check if we need to switch to alt interfaces prior to port
2969 if (interface
->num_altsetting
> 1)
2970 usb_set_interface(interface_to_usbdev(interface
), if_num
, 1);
2971 interface
->needs_remote_wakeup
= 1;
2973 /* Allocate new hso device(s) */
2974 switch (port_spec
& HSO_INTF_MASK
) {
2976 if ((port_spec
& HSO_PORT_MASK
) == HSO_PORT_NETWORK
) {
2977 /* Create the network device */
2979 hso_dev
= hso_create_net_device(interface
,
2987 if (hso_get_mux_ports(interface
, &port_mask
))
2988 /* TODO: de-allocate everything */
2991 shared_int
= hso_create_shared_int(interface
);
2995 for (i
= 1, mux
= 0; i
< 0x100; i
= i
<< 1, mux
++) {
2996 if (port_mask
& i
) {
2997 hso_dev
= hso_create_mux_serial_device(
2998 interface
, i
, shared_int
);
3009 /* It's a regular bulk interface */
3010 if (((port_spec
& HSO_PORT_MASK
) == HSO_PORT_NETWORK
) &&
3012 hso_dev
= hso_create_net_device(interface
, port_spec
);
3015 hso_create_bulk_serial_device(interface
, port_spec
);
3023 /* save our data pointer in this device */
3024 usb_set_intfdata(interface
, hso_dev
);
3029 hso_free_interface(interface
);
3033 /* device removed, cleaning up */
3034 static void hso_disconnect(struct usb_interface
*interface
)
3036 hso_free_interface(interface
);
3038 /* remove reference of our private data */
3039 usb_set_intfdata(interface
, NULL
);
3042 static void async_get_intf(struct work_struct
*data
)
3044 struct hso_device
*hso_dev
=
3045 container_of(data
, struct hso_device
, async_get_intf
);
3046 usb_autopm_get_interface(hso_dev
->interface
);
3049 static void async_put_intf(struct work_struct
*data
)
3051 struct hso_device
*hso_dev
=
3052 container_of(data
, struct hso_device
, async_put_intf
);
3053 usb_autopm_put_interface(hso_dev
->interface
);
3056 static int hso_get_activity(struct hso_device
*hso_dev
)
3058 if (hso_dev
->usb
->state
== USB_STATE_SUSPENDED
) {
3059 if (!hso_dev
->is_active
) {
3060 hso_dev
->is_active
= 1;
3061 schedule_work(&hso_dev
->async_get_intf
);
3065 if (hso_dev
->usb
->state
!= USB_STATE_CONFIGURED
)
3068 usb_mark_last_busy(hso_dev
->usb
);
3073 static int hso_put_activity(struct hso_device
*hso_dev
)
3075 if (hso_dev
->usb
->state
!= USB_STATE_SUSPENDED
) {
3076 if (hso_dev
->is_active
) {
3077 hso_dev
->is_active
= 0;
3078 schedule_work(&hso_dev
->async_put_intf
);
3082 hso_dev
->is_active
= 0;
3086 /* called by kernel when we need to suspend device */
3087 static int hso_suspend(struct usb_interface
*iface
, pm_message_t message
)
3091 /* Stop all serial ports */
3092 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
3093 if (serial_table
[i
] && (serial_table
[i
]->interface
== iface
)) {
3094 result
= hso_stop_serial_device(serial_table
[i
]);
3100 /* Stop all network ports */
3101 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
3102 if (network_table
[i
] &&
3103 (network_table
[i
]->interface
== iface
)) {
3104 result
= hso_stop_net_device(network_table
[i
]);
3114 /* called by kernel when we need to resume device */
3115 static int hso_resume(struct usb_interface
*iface
)
3118 struct hso_net
*hso_net
;
3120 /* Start all serial ports */
3121 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
3122 if (serial_table
[i
] && (serial_table
[i
]->interface
== iface
)) {
3123 if (dev2ser(serial_table
[i
])->open_count
) {
3125 hso_start_serial_device(serial_table
[i
], GFP_NOIO
);
3126 hso_kick_transmit(dev2ser(serial_table
[i
]));
3133 /* Start all network ports */
3134 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
3135 if (network_table
[i
] &&
3136 (network_table
[i
]->interface
== iface
)) {
3137 hso_net
= dev2net(network_table
[i
]);
3138 if (hso_net
->flags
& IFF_UP
) {
3139 /* First transmit any lingering data,
3140 then restart the device. */
3141 if (hso_net
->skb_tx_buf
) {
3142 dev_dbg(&iface
->dev
,
3144 " lingering data\n");
3145 hso_net_start_xmit(hso_net
->skb_tx_buf
,
3147 hso_net
->skb_tx_buf
= NULL
;
3149 result
= hso_start_net_device(network_table
[i
]);
3160 static void reset_device(struct work_struct
*data
)
3162 struct hso_device
*hso_dev
=
3163 container_of(data
, struct hso_device
, reset_device
);
3164 struct usb_device
*usb
= hso_dev
->usb
;
3167 if (hso_dev
->usb_gone
) {
3168 D1("No reset during disconnect\n");
3170 result
= usb_lock_device_for_reset(usb
, hso_dev
->interface
);
3172 D1("unable to lock device for reset: %d\n", result
);
3174 usb_reset_device(usb
);
3175 usb_unlock_device(usb
);
3180 static void hso_serial_ref_free(struct kref
*ref
)
3182 struct hso_device
*hso_dev
= container_of(ref
, struct hso_device
, ref
);
3184 hso_free_serial_device(hso_dev
);
3187 static void hso_free_interface(struct usb_interface
*interface
)
3189 struct hso_serial
*hso_dev
;
3190 struct tty_struct
*tty
;
3193 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
3194 if (serial_table
[i
] &&
3195 (serial_table
[i
]->interface
== interface
)) {
3196 hso_dev
= dev2ser(serial_table
[i
]);
3197 spin_lock_irq(&hso_dev
->serial_lock
);
3198 tty
= tty_kref_get(hso_dev
->tty
);
3199 spin_unlock_irq(&hso_dev
->serial_lock
);
3202 mutex_lock(&hso_dev
->parent
->mutex
);
3204 hso_dev
->parent
->usb_gone
= 1;
3205 mutex_unlock(&hso_dev
->parent
->mutex
);
3206 kref_put(&serial_table
[i
]->ref
, hso_serial_ref_free
);
3210 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
3211 if (network_table
[i
] &&
3212 (network_table
[i
]->interface
== interface
)) {
3213 struct rfkill
*rfk
= dev2net(network_table
[i
])->rfkill
;
3214 /* hso_stop_net_device doesn't stop the net queue since
3215 * traffic needs to start it again when suspended */
3216 netif_stop_queue(dev2net(network_table
[i
])->net
);
3217 hso_stop_net_device(network_table
[i
]);
3218 cancel_work_sync(&network_table
[i
]->async_put_intf
);
3219 cancel_work_sync(&network_table
[i
]->async_get_intf
);
3221 rfkill_unregister(rfk
);
3222 rfkill_destroy(rfk
);
3224 hso_free_net_device(network_table
[i
]);
3229 /* Helper functions */
3231 /* Get the endpoint ! */
3232 static struct usb_endpoint_descriptor
*hso_get_ep(struct usb_interface
*intf
,
3236 struct usb_host_interface
*iface
= intf
->cur_altsetting
;
3237 struct usb_endpoint_descriptor
*endp
;
3239 for (i
= 0; i
< iface
->desc
.bNumEndpoints
; i
++) {
3240 endp
= &iface
->endpoint
[i
].desc
;
3241 if (((endp
->bEndpointAddress
& USB_ENDPOINT_DIR_MASK
) == dir
) &&
3242 (usb_endpoint_type(endp
) == type
))
3249 /* Get the byte that describes which ports are enabled */
3250 static int hso_get_mux_ports(struct usb_interface
*intf
, unsigned char *ports
)
3253 struct usb_host_interface
*iface
= intf
->cur_altsetting
;
3255 if (iface
->extralen
== 3) {
3256 *ports
= iface
->extra
[2];
3260 for (i
= 0; i
< iface
->desc
.bNumEndpoints
; i
++) {
3261 if (iface
->endpoint
[i
].extralen
== 3) {
3262 *ports
= iface
->endpoint
[i
].extra
[2];
3270 /* interrupt urb needs to be submitted, used for serial read of muxed port */
3271 static int hso_mux_submit_intr_urb(struct hso_shared_int
*shared_int
,
3272 struct usb_device
*usb
, gfp_t gfp
)
3276 usb_fill_int_urb(shared_int
->shared_intr_urb
, usb
,
3278 shared_int
->intr_endp
->bEndpointAddress
& 0x7F),
3279 shared_int
->shared_intr_buf
,
3281 intr_callback
, shared_int
,
3282 shared_int
->intr_endp
->bInterval
);
3284 result
= usb_submit_urb(shared_int
->shared_intr_urb
, gfp
);
3286 dev_warn(&usb
->dev
, "%s failed mux_intr_urb %d\n", __func__
,
3292 /* operations setup of the serial interface */
3293 static const struct tty_operations hso_serial_ops
= {
3294 .open
= hso_serial_open
,
3295 .close
= hso_serial_close
,
3296 .write
= hso_serial_write
,
3297 .write_room
= hso_serial_write_room
,
3298 .ioctl
= hso_serial_ioctl
,
3299 .set_termios
= hso_serial_set_termios
,
3300 .chars_in_buffer
= hso_serial_chars_in_buffer
,
3301 .tiocmget
= hso_serial_tiocmget
,
3302 .tiocmset
= hso_serial_tiocmset
,
3303 .unthrottle
= hso_unthrottle
3306 static struct usb_driver hso_driver
= {
3307 .name
= driver_name
,
3309 .disconnect
= hso_disconnect
,
3310 .id_table
= hso_ids
,
3311 .suspend
= hso_suspend
,
3312 .resume
= hso_resume
,
3313 .reset_resume
= hso_resume
,
3314 .supports_autosuspend
= 1,
3317 static int __init
hso_init(void)
3322 /* put it in the log */
3323 printk(KERN_INFO
"hso: %s\n", version
);
3325 /* Initialise the serial table semaphore and table */
3326 spin_lock_init(&serial_table_lock
);
3327 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++)
3328 serial_table
[i
] = NULL
;
3330 /* allocate our driver using the proper amount of supported minors */
3331 tty_drv
= alloc_tty_driver(HSO_SERIAL_TTY_MINORS
);
3335 /* fill in all needed values */
3336 tty_drv
->magic
= TTY_DRIVER_MAGIC
;
3337 tty_drv
->owner
= THIS_MODULE
;
3338 tty_drv
->driver_name
= driver_name
;
3339 tty_drv
->name
= tty_filename
;
3341 /* if major number is provided as parameter, use that one */
3343 tty_drv
->major
= tty_major
;
3345 tty_drv
->minor_start
= 0;
3346 tty_drv
->num
= HSO_SERIAL_TTY_MINORS
;
3347 tty_drv
->type
= TTY_DRIVER_TYPE_SERIAL
;
3348 tty_drv
->subtype
= SERIAL_TYPE_NORMAL
;
3349 tty_drv
->flags
= TTY_DRIVER_REAL_RAW
| TTY_DRIVER_DYNAMIC_DEV
;
3350 tty_drv
->init_termios
= tty_std_termios
;
3351 hso_init_termios(&tty_drv
->init_termios
);
3352 tty_set_operations(tty_drv
, &hso_serial_ops
);
3354 /* register the tty driver */
3355 result
= tty_register_driver(tty_drv
);
3357 printk(KERN_ERR
"%s - tty_register_driver failed(%d)\n",
3362 /* register this module as an usb driver */
3363 result
= usb_register(&hso_driver
);
3365 printk(KERN_ERR
"Could not register hso driver? error: %d\n",
3367 /* cleanup serial interface */
3368 tty_unregister_driver(tty_drv
);
3376 static void __exit
hso_exit(void)
3378 printk(KERN_INFO
"hso: unloaded\n");
3380 tty_unregister_driver(tty_drv
);
3381 /* deregister the usb driver */
3382 usb_deregister(&hso_driver
);
3385 /* Module definitions */
3386 module_init(hso_init
);
3387 module_exit(hso_exit
);
3389 MODULE_AUTHOR(MOD_AUTHOR
);
3390 MODULE_DESCRIPTION(MOD_DESCRIPTION
);
3391 MODULE_LICENSE(MOD_LICENSE
);
3393 /* change the debug level (eg: insmod hso.ko debug=0x04) */
3394 MODULE_PARM_DESC(debug
, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
3395 module_param(debug
, int, S_IRUGO
| S_IWUSR
);
3397 /* set the major tty number (eg: insmod hso.ko tty_major=245) */
3398 MODULE_PARM_DESC(tty_major
, "Set the major tty number");
3399 module_param(tty_major
, int, S_IRUGO
| S_IWUSR
);
3401 /* disable network interface (eg: insmod hso.ko disable_net=1) */
3402 MODULE_PARM_DESC(disable_net
, "Disable the network interface");
3403 module_param(disable_net
, int, S_IRUGO
| S_IWUSR
);