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 * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd)
9 * <ajb@spheresystems.co.uk>
10 * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
11 * Copyright (C) 2008 Novell, Inc.
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
28 *****************************************************************************/
30 /******************************************************************************
32 * Description of the device:
34 * Interface 0: Contains the IP network interface on the bulk end points.
35 * The multiplexed serial ports are using the interrupt and
37 * Interrupt contains a bitmap telling which multiplexed
38 * serialport needs servicing.
40 * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the
41 * port is opened, as this have a huge impact on the network port
44 * Interface 2: Standard modem interface - circuit switched interface, this
45 * can be used to make a standard ppp connection however it
46 * should not be used in conjunction with the IP network interface
47 * enabled for USB performance reasons i.e. if using this set
48 * ideally disable_net=1.
50 *****************************************************************************/
52 #include <linux/sched.h>
53 #include <linux/slab.h>
54 #include <linux/init.h>
55 #include <linux/delay.h>
56 #include <linux/netdevice.h>
57 #include <linux/module.h>
58 #include <linux/ethtool.h>
59 #include <linux/usb.h>
60 #include <linux/timer.h>
61 #include <linux/tty.h>
62 #include <linux/tty_driver.h>
63 #include <linux/tty_flip.h>
64 #include <linux/kmod.h>
65 #include <linux/rfkill.h>
67 #include <linux/uaccess.h>
68 #include <linux/usb/cdc.h>
70 #include <asm/byteorder.h>
71 #include <linux/serial_core.h>
72 #include <linux/serial.h>
75 #define DRIVER_VERSION "1.2"
76 #define MOD_AUTHOR "Option Wireless"
77 #define MOD_DESCRIPTION "USB High Speed Option driver"
78 #define MOD_LICENSE "GPL"
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
;
213 } __attribute__((packed
));
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
;
289 struct usb_device
*usb
;
290 struct usb_interface
*interface
;
297 /* Type of interface */
298 #define HSO_INTF_MASK 0xFF00
299 #define HSO_INTF_MUX 0x0100
300 #define HSO_INTF_BULK 0x0200
303 #define HSO_PORT_MASK 0xFF
304 #define HSO_PORT_NO_PORT 0x0
305 #define HSO_PORT_CONTROL 0x1
306 #define HSO_PORT_APP 0x2
307 #define HSO_PORT_GPS 0x3
308 #define HSO_PORT_PCSC 0x4
309 #define HSO_PORT_APP2 0x5
310 #define HSO_PORT_GPS_CONTROL 0x6
311 #define HSO_PORT_MSD 0x7
312 #define HSO_PORT_VOICE 0x8
313 #define HSO_PORT_DIAG2 0x9
314 #define HSO_PORT_DIAG 0x10
315 #define HSO_PORT_MODEM 0x11
316 #define HSO_PORT_NETWORK 0x12
318 /* Additional device info */
319 #define HSO_INFO_MASK 0xFF000000
320 #define HSO_INFO_CRC_BUG 0x01000000
322 /*****************************************************************************/
324 /*****************************************************************************/
325 /* Serial driver functions */
326 static int hso_serial_tiocmset(struct tty_struct
*tty
, struct file
*file
,
327 unsigned int set
, unsigned int clear
);
328 static void ctrl_callback(struct urb
*urb
);
329 static int put_rxbuf_data(struct urb
*urb
, struct hso_serial
*serial
);
330 static void hso_kick_transmit(struct hso_serial
*serial
);
331 /* Helper functions */
332 static int hso_mux_submit_intr_urb(struct hso_shared_int
*mux_int
,
333 struct usb_device
*usb
, gfp_t gfp
);
334 static void log_usb_status(int status
, const char *function
);
335 static struct usb_endpoint_descriptor
*hso_get_ep(struct usb_interface
*intf
,
337 static int hso_get_mux_ports(struct usb_interface
*intf
, unsigned char *ports
);
338 static void hso_free_interface(struct usb_interface
*intf
);
339 static int hso_start_serial_device(struct hso_device
*hso_dev
, gfp_t flags
);
340 static int hso_stop_serial_device(struct hso_device
*hso_dev
);
341 static int hso_start_net_device(struct hso_device
*hso_dev
);
342 static void hso_free_shared_int(struct hso_shared_int
*shared_int
);
343 static int hso_stop_net_device(struct hso_device
*hso_dev
);
344 static void hso_serial_ref_free(struct kref
*ref
);
345 static void hso_std_serial_read_bulk_callback(struct urb
*urb
);
346 static int hso_mux_serial_read(struct hso_serial
*serial
);
347 static void async_get_intf(struct work_struct
*data
);
348 static void async_put_intf(struct work_struct
*data
);
349 static int hso_put_activity(struct hso_device
*hso_dev
);
350 static int hso_get_activity(struct hso_device
*hso_dev
);
351 static void tiocmget_intr_callback(struct urb
*urb
);
352 /*****************************************************************************/
353 /* Helping functions */
354 /*****************************************************************************/
358 static inline struct hso_net
*dev2net(struct hso_device
*hso_dev
)
360 return hso_dev
->port_data
.dev_net
;
363 static inline struct hso_serial
*dev2ser(struct hso_device
*hso_dev
)
365 return hso_dev
->port_data
.dev_serial
;
368 /* Debugging functions */
370 static void dbg_dump(int line_count
, const char *func_name
, unsigned char *buf
,
373 static char name
[255];
375 sprintf(name
, "hso[%d:%s]", line_count
, func_name
);
376 print_hex_dump_bytes(name
, DUMP_PREFIX_NONE
, buf
, len
);
379 #define DUMP(buf_, len_) \
380 dbg_dump(__LINE__, __func__, buf_, len_)
382 #define DUMP1(buf_, len_) \
388 #define DUMP(buf_, len_)
389 #define DUMP1(buf_, len_)
392 /* module parameters */
394 static int tty_major
;
395 static int disable_net
;
398 static const char driver_name
[] = "hso";
399 static const char tty_filename
[] = "ttyHS";
400 static const char *version
= __FILE__
": " DRIVER_VERSION
" " MOD_AUTHOR
;
401 /* the usb driver itself (registered in hso_init) */
402 static struct usb_driver hso_driver
;
403 /* serial structures */
404 static struct tty_driver
*tty_drv
;
405 static struct hso_device
*serial_table
[HSO_SERIAL_TTY_MINORS
];
406 static struct hso_device
*network_table
[HSO_MAX_NET_DEVICES
];
407 static spinlock_t serial_table_lock
;
409 static const s32 default_port_spec
[] = {
410 HSO_INTF_MUX
| HSO_PORT_NETWORK
,
411 HSO_INTF_BULK
| HSO_PORT_DIAG
,
412 HSO_INTF_BULK
| HSO_PORT_MODEM
,
416 static const s32 icon321_port_spec
[] = {
417 HSO_INTF_MUX
| HSO_PORT_NETWORK
,
418 HSO_INTF_BULK
| HSO_PORT_DIAG2
,
419 HSO_INTF_BULK
| HSO_PORT_MODEM
,
420 HSO_INTF_BULK
| HSO_PORT_DIAG
,
424 #define default_port_device(vendor, product) \
425 USB_DEVICE(vendor, product), \
426 .driver_info = (kernel_ulong_t)default_port_spec
428 #define icon321_port_device(vendor, product) \
429 USB_DEVICE(vendor, product), \
430 .driver_info = (kernel_ulong_t)icon321_port_spec
432 /* list of devices we support */
433 static const struct usb_device_id hso_ids
[] = {
434 {default_port_device(0x0af0, 0x6711)},
435 {default_port_device(0x0af0, 0x6731)},
436 {default_port_device(0x0af0, 0x6751)},
437 {default_port_device(0x0af0, 0x6771)},
438 {default_port_device(0x0af0, 0x6791)},
439 {default_port_device(0x0af0, 0x6811)},
440 {default_port_device(0x0af0, 0x6911)},
441 {default_port_device(0x0af0, 0x6951)},
442 {default_port_device(0x0af0, 0x6971)},
443 {default_port_device(0x0af0, 0x7011)},
444 {default_port_device(0x0af0, 0x7031)},
445 {default_port_device(0x0af0, 0x7051)},
446 {default_port_device(0x0af0, 0x7071)},
447 {default_port_device(0x0af0, 0x7111)},
448 {default_port_device(0x0af0, 0x7211)},
449 {default_port_device(0x0af0, 0x7251)},
450 {default_port_device(0x0af0, 0x7271)},
451 {default_port_device(0x0af0, 0x7311)},
452 {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */
453 {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */
454 {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */
455 {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */
456 {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */
457 {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */
458 {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */
459 {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */
460 {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */
461 {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */
462 {USB_DEVICE(0x0af0, 0x7701)},
463 {USB_DEVICE(0x0af0, 0x7801)},
464 {USB_DEVICE(0x0af0, 0x7901)},
465 {USB_DEVICE(0x0af0, 0x7361)},
466 {USB_DEVICE(0x0af0, 0xd057)},
467 {USB_DEVICE(0x0af0, 0xd055)},
470 MODULE_DEVICE_TABLE(usb
, hso_ids
);
472 /* Sysfs attribute */
473 static ssize_t
hso_sysfs_show_porttype(struct device
*dev
,
474 struct device_attribute
*attr
,
477 struct hso_device
*hso_dev
= dev
->driver_data
;
483 switch (hso_dev
->port_spec
& HSO_PORT_MASK
) {
484 case HSO_PORT_CONTROL
:
485 port_name
= "Control";
488 port_name
= "Application";
491 port_name
= "Application2";
496 case HSO_PORT_GPS_CONTROL
:
497 port_name
= "GPS Control";
503 port_name
= "Diagnostic";
506 port_name
= "Diagnostic2";
511 case HSO_PORT_NETWORK
:
512 port_name
= "Network";
515 port_name
= "Unknown";
519 return sprintf(buf
, "%s\n", port_name
);
521 static DEVICE_ATTR(hsotype
, S_IRUGO
, hso_sysfs_show_porttype
, NULL
);
523 static int hso_urb_to_index(struct hso_serial
*serial
, struct urb
*urb
)
527 for (idx
= 0; idx
< serial
->num_rx_urbs
; idx
++)
528 if (serial
->rx_urb
[idx
] == urb
)
530 dev_err(serial
->parent
->dev
, "hso_urb_to_index failed\n");
534 /* converts mux value to a port spec value */
535 static u32
hso_mux_to_port(int mux
)
541 result
= HSO_PORT_CONTROL
;
544 result
= HSO_PORT_APP
;
547 result
= HSO_PORT_PCSC
;
550 result
= HSO_PORT_GPS
;
553 result
= HSO_PORT_APP2
;
556 result
= HSO_PORT_NO_PORT
;
561 /* converts port spec value to a mux value */
562 static u32
hso_port_to_mux(int port
)
566 switch (port
& HSO_PORT_MASK
) {
567 case HSO_PORT_CONTROL
:
588 static struct hso_serial
*get_serial_by_shared_int_and_type(
589 struct hso_shared_int
*shared_int
,
594 port
= hso_mux_to_port(mux
);
596 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
598 && (dev2ser(serial_table
[i
])->shared_int
== shared_int
)
599 && ((serial_table
[i
]->port_spec
& HSO_PORT_MASK
) == port
)) {
600 return dev2ser(serial_table
[i
]);
607 static struct hso_serial
*get_serial_by_index(unsigned index
)
609 struct hso_serial
*serial
= NULL
;
612 spin_lock_irqsave(&serial_table_lock
, flags
);
613 if (serial_table
[index
])
614 serial
= dev2ser(serial_table
[index
]);
615 spin_unlock_irqrestore(&serial_table_lock
, flags
);
620 static int get_free_serial_index(void)
625 spin_lock_irqsave(&serial_table_lock
, flags
);
626 for (index
= 0; index
< HSO_SERIAL_TTY_MINORS
; index
++) {
627 if (serial_table
[index
] == NULL
) {
628 spin_unlock_irqrestore(&serial_table_lock
, flags
);
632 spin_unlock_irqrestore(&serial_table_lock
, flags
);
634 printk(KERN_ERR
"%s: no free serial devices in table\n", __func__
);
638 static void set_serial_by_index(unsigned index
, struct hso_serial
*serial
)
642 spin_lock_irqsave(&serial_table_lock
, flags
);
644 serial_table
[index
] = serial
->parent
;
646 serial_table
[index
] = NULL
;
647 spin_unlock_irqrestore(&serial_table_lock
, flags
);
650 /* log a meaningful explanation of an USB status */
651 static void log_usb_status(int status
, const char *function
)
657 explanation
= "no device";
660 explanation
= "endpoint not enabled";
663 explanation
= "endpoint stalled";
666 explanation
= "not enough bandwidth";
669 explanation
= "device disabled";
672 explanation
= "device suspended";
678 explanation
= "internal error";
681 explanation
= "unknown status";
684 D1("%s: received USB status - %s (%d)", function
, explanation
, status
);
687 /* Network interface functions */
689 /* called when net interface is brought up by ifconfig */
690 static int hso_net_open(struct net_device
*net
)
692 struct hso_net
*odev
= netdev_priv(net
);
693 unsigned long flags
= 0;
696 dev_err(&net
->dev
, "No net device !\n");
700 odev
->skb_tx_buf
= NULL
;
702 /* setup environment */
703 spin_lock_irqsave(&odev
->net_lock
, flags
);
704 odev
->rx_parse_state
= WAIT_IP
;
705 odev
->rx_buf_size
= 0;
706 odev
->rx_buf_missing
= sizeof(struct iphdr
);
707 spin_unlock_irqrestore(&odev
->net_lock
, flags
);
709 /* We are up and running. */
710 set_bit(HSO_NET_RUNNING
, &odev
->flags
);
711 hso_start_net_device(odev
->parent
);
713 /* Tell the kernel we are ready to start receiving from it */
714 netif_start_queue(net
);
719 /* called when interface is brought down by ifconfig */
720 static int hso_net_close(struct net_device
*net
)
722 struct hso_net
*odev
= netdev_priv(net
);
724 /* we don't need the queue anymore */
725 netif_stop_queue(net
);
726 /* no longer running */
727 clear_bit(HSO_NET_RUNNING
, &odev
->flags
);
729 hso_stop_net_device(odev
->parent
);
735 /* USB tells is xmit done, we should start the netqueue again */
736 static void write_bulk_callback(struct urb
*urb
)
738 struct hso_net
*odev
= urb
->context
;
739 int status
= urb
->status
;
742 if (!odev
|| !test_bit(HSO_NET_RUNNING
, &odev
->flags
)) {
743 dev_err(&urb
->dev
->dev
, "%s: device not running\n", __func__
);
747 /* Do we still have a valid kernel network device? */
748 if (!netif_device_present(odev
->net
)) {
749 dev_err(&urb
->dev
->dev
, "%s: net device not present\n",
754 /* log status, but don't act on it, we don't need to resubmit anything
757 log_usb_status(status
, __func__
);
759 hso_put_activity(odev
->parent
);
761 /* Tell the network interface we are ready for another frame */
762 netif_wake_queue(odev
->net
);
765 /* called by kernel when we need to transmit a packet */
766 static int hso_net_start_xmit(struct sk_buff
*skb
, struct net_device
*net
)
768 struct hso_net
*odev
= netdev_priv(net
);
771 /* Tell the kernel, "No more frames 'til we are done with this one." */
772 netif_stop_queue(net
);
773 if (hso_get_activity(odev
->parent
) == -EAGAIN
) {
774 odev
->skb_tx_buf
= skb
;
779 DUMP1(skb
->data
, skb
->len
);
780 /* Copy it from kernel memory to OUR memory */
781 memcpy(odev
->mux_bulk_tx_buf
, skb
->data
, skb
->len
);
782 D1("len: %d/%d", skb
->len
, MUX_BULK_TX_BUF_SIZE
);
784 /* Fill in the URB for shipping it out. */
785 usb_fill_bulk_urb(odev
->mux_bulk_tx_urb
,
787 usb_sndbulkpipe(odev
->parent
->usb
,
789 bEndpointAddress
& 0x7F),
790 odev
->mux_bulk_tx_buf
, skb
->len
, write_bulk_callback
,
793 /* Deal with the Zero Length packet problem, I hope */
794 odev
->mux_bulk_tx_urb
->transfer_flags
|= URB_ZERO_PACKET
;
796 /* Send the URB on its merry way. */
797 result
= usb_submit_urb(odev
->mux_bulk_tx_urb
, GFP_ATOMIC
);
799 dev_warn(&odev
->parent
->interface
->dev
,
800 "failed mux_bulk_tx_urb %d", result
);
801 net
->stats
.tx_errors
++;
802 netif_start_queue(net
);
804 net
->stats
.tx_packets
++;
805 net
->stats
.tx_bytes
+= skb
->len
;
806 /* And tell the kernel when the last transmit started. */
807 net
->trans_start
= jiffies
;
814 static void hso_get_drvinfo(struct net_device
*net
, struct ethtool_drvinfo
*info
)
816 struct hso_net
*odev
= netdev_priv(net
);
818 strncpy(info
->driver
, driver_name
, ETHTOOL_BUSINFO_LEN
);
819 strncpy(info
->version
, DRIVER_VERSION
, ETHTOOL_BUSINFO_LEN
);
820 usb_make_path(odev
->parent
->usb
, info
->bus_info
, sizeof info
->bus_info
);
823 static struct ethtool_ops ops
= {
824 .get_drvinfo
= hso_get_drvinfo
,
825 .get_link
= ethtool_op_get_link
828 /* called when a packet did not ack after watchdogtimeout */
829 static void hso_net_tx_timeout(struct net_device
*net
)
831 struct hso_net
*odev
= netdev_priv(net
);
836 /* Tell syslog we are hosed. */
837 dev_warn(&net
->dev
, "Tx timed out.\n");
839 /* Tear the waiting frame off the list */
840 if (odev
->mux_bulk_tx_urb
841 && (odev
->mux_bulk_tx_urb
->status
== -EINPROGRESS
))
842 usb_unlink_urb(odev
->mux_bulk_tx_urb
);
844 /* Update statistics */
845 net
->stats
.tx_errors
++;
848 /* make a real packet from the received USB buffer */
849 static void packetizeRx(struct hso_net
*odev
, unsigned char *ip_pkt
,
850 unsigned int count
, unsigned char is_eop
)
852 unsigned short temp_bytes
;
853 unsigned short buffer_offset
= 0;
854 unsigned short frame_len
;
855 unsigned char *tmp_rx_buf
;
858 D1("Rx %d bytes", count
);
859 DUMP(ip_pkt
, min(128, (int)count
));
862 switch (odev
->rx_parse_state
) {
864 /* waiting for IP header. */
865 /* wanted bytes - size of ip header */
868 odev
->rx_buf_missing
) ? count
: odev
->
871 memcpy(((unsigned char *)(&odev
->rx_ip_hdr
)) +
872 odev
->rx_buf_size
, ip_pkt
+ buffer_offset
,
875 odev
->rx_buf_size
+= temp_bytes
;
876 buffer_offset
+= temp_bytes
;
877 odev
->rx_buf_missing
-= temp_bytes
;
880 if (!odev
->rx_buf_missing
) {
881 /* header is complete allocate an sk_buffer and
882 * continue to WAIT_DATA */
883 frame_len
= ntohs(odev
->rx_ip_hdr
.tot_len
);
885 if ((frame_len
> DEFAULT_MRU
) ||
886 (frame_len
< sizeof(struct iphdr
))) {
887 dev_err(&odev
->net
->dev
,
888 "Invalid frame (%d) length\n",
890 odev
->rx_parse_state
= WAIT_SYNC
;
893 /* Allocate an sk_buff */
894 odev
->skb_rx_buf
= dev_alloc_skb(frame_len
);
895 if (!odev
->skb_rx_buf
) {
896 /* We got no receive buffer. */
897 D1("could not allocate memory");
898 odev
->rx_parse_state
= WAIT_SYNC
;
901 /* Here's where it came from */
902 odev
->skb_rx_buf
->dev
= odev
->net
;
904 /* Copy what we got so far. make room for iphdr
907 skb_put(odev
->skb_rx_buf
,
908 sizeof(struct iphdr
));
909 memcpy(tmp_rx_buf
, (char *)&(odev
->rx_ip_hdr
),
910 sizeof(struct iphdr
));
913 odev
->rx_buf_size
= sizeof(struct iphdr
);
915 /* Filip actually use .tot_len */
916 odev
->rx_buf_missing
=
917 frame_len
- sizeof(struct iphdr
);
918 odev
->rx_parse_state
= WAIT_DATA
;
923 temp_bytes
= (count
< odev
->rx_buf_missing
)
924 ? count
: odev
->rx_buf_missing
;
926 /* Copy the rest of the bytes that are left in the
927 * buffer into the waiting sk_buf. */
928 /* Make room for temp_bytes after tail. */
929 tmp_rx_buf
= skb_put(odev
->skb_rx_buf
, temp_bytes
);
930 memcpy(tmp_rx_buf
, ip_pkt
+ buffer_offset
, temp_bytes
);
932 odev
->rx_buf_missing
-= temp_bytes
;
934 buffer_offset
+= temp_bytes
;
935 odev
->rx_buf_size
+= temp_bytes
;
936 if (!odev
->rx_buf_missing
) {
937 /* Packet is complete. Inject into stack. */
938 /* We have IP packet here */
939 odev
->skb_rx_buf
->protocol
= cpu_to_be16(ETH_P_IP
);
941 odev
->skb_rx_buf
->ip_summed
=
942 CHECKSUM_UNNECESSARY
;
944 skb_reset_mac_header(odev
->skb_rx_buf
);
946 /* Ship it off to the kernel */
947 netif_rx(odev
->skb_rx_buf
);
948 /* No longer our buffer. */
949 odev
->skb_rx_buf
= NULL
;
951 /* update out statistics */
952 odev
->net
->stats
.rx_packets
++;
954 odev
->net
->stats
.rx_bytes
+= odev
->rx_buf_size
;
956 odev
->rx_buf_size
= 0;
957 odev
->rx_buf_missing
= sizeof(struct iphdr
);
958 odev
->rx_parse_state
= WAIT_IP
;
973 /* Recovery mechanism for WAIT_SYNC state. */
975 if (odev
->rx_parse_state
== WAIT_SYNC
) {
976 odev
->rx_parse_state
= WAIT_IP
;
977 odev
->rx_buf_size
= 0;
978 odev
->rx_buf_missing
= sizeof(struct iphdr
);
983 /* Moving data from usb to kernel (in interrupt state) */
984 static void read_bulk_callback(struct urb
*urb
)
986 struct hso_net
*odev
= urb
->context
;
987 struct net_device
*net
;
989 int status
= urb
->status
;
991 /* is al ok? (Filip: Who's Al ?) */
993 log_usb_status(status
, __func__
);
998 if (!odev
|| !test_bit(HSO_NET_RUNNING
, &odev
->flags
)) {
999 D1("BULK IN callback but driver is not active!");
1002 usb_mark_last_busy(urb
->dev
);
1006 if (!netif_device_present(net
)) {
1007 /* Somebody killed our network interface... */
1011 if (odev
->parent
->port_spec
& HSO_INFO_CRC_BUG
) {
1013 u8 crc_check
[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1014 rest
= urb
->actual_length
% odev
->in_endp
->wMaxPacketSize
;
1015 if (((rest
== 5) || (rest
== 6))
1016 && !memcmp(((u8
*) urb
->transfer_buffer
) +
1017 urb
->actual_length
- 4, crc_check
, 4)) {
1018 urb
->actual_length
-= 4;
1022 /* do we even have a packet? */
1023 if (urb
->actual_length
) {
1024 /* Handle the IP stream, add header and push it onto network
1025 * stack if the packet is complete. */
1026 spin_lock(&odev
->net_lock
);
1027 packetizeRx(odev
, urb
->transfer_buffer
, urb
->actual_length
,
1028 (urb
->transfer_buffer_length
>
1029 urb
->actual_length
) ? 1 : 0);
1030 spin_unlock(&odev
->net_lock
);
1033 /* We are done with this URB, resubmit it. Prep the USB to wait for
1034 * another frame. Reuse same as received. */
1035 usb_fill_bulk_urb(urb
,
1037 usb_rcvbulkpipe(odev
->parent
->usb
,
1039 bEndpointAddress
& 0x7F),
1040 urb
->transfer_buffer
, MUX_BULK_RX_BUF_SIZE
,
1041 read_bulk_callback
, odev
);
1043 /* Give this to the USB subsystem so it can tell us when more data
1045 result
= usb_submit_urb(urb
, GFP_ATOMIC
);
1047 dev_warn(&odev
->parent
->interface
->dev
,
1048 "%s failed submit mux_bulk_rx_urb %d", __func__
,
1052 /* Serial driver functions */
1054 static void hso_init_termios(struct ktermios
*termios
)
1057 * The default requirements for this device are:
1060 ~(IGNBRK
/* disable ignore break */
1061 | BRKINT
/* disable break causes interrupt */
1062 | PARMRK
/* disable mark parity errors */
1063 | ISTRIP
/* disable clear high bit of input characters */
1064 | INLCR
/* disable translate NL to CR */
1065 | IGNCR
/* disable ignore CR */
1066 | ICRNL
/* disable translate CR to NL */
1067 | IXON
); /* disable enable XON/XOFF flow control */
1069 /* disable postprocess output characters */
1070 termios
->c_oflag
&= ~OPOST
;
1073 ~(ECHO
/* disable echo input characters */
1074 | ECHONL
/* disable echo new line */
1075 | ICANON
/* disable erase, kill, werase, and rprnt
1076 special characters */
1077 | ISIG
/* disable interrupt, quit, and suspend special
1079 | IEXTEN
); /* disable non-POSIX special characters */
1082 ~(CSIZE
/* no size */
1083 | PARENB
/* disable parity bit */
1084 | CBAUD
/* clear current baud rate */
1085 | CBAUDEX
); /* clear current buad rate */
1087 termios
->c_cflag
|= CS8
; /* character size 8 bits */
1089 /* baud rate 115200 */
1090 tty_termios_encode_baud_rate(termios
, 115200, 115200);
1093 static void _hso_serial_set_termios(struct tty_struct
*tty
,
1094 struct ktermios
*old
)
1096 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1097 struct ktermios
*termios
;
1100 printk(KERN_ERR
"%s: no tty structures", __func__
);
1104 D4("port %d", serial
->minor
);
1107 * Fix up unsupported bits
1109 termios
= tty
->termios
;
1110 termios
->c_iflag
&= ~IXON
; /* disable enable XON/XOFF flow control */
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_encode_baud_rate(tty
, 115200, 115200);
1124 static void hso_resubmit_rx_bulk_urb(struct hso_serial
*serial
, struct urb
*urb
)
1127 #ifdef CONFIG_HSO_AUTOPM
1128 usb_mark_last_busy(urb
->dev
);
1130 /* We are done with this URB, resubmit it. Prep the USB to wait for
1132 usb_fill_bulk_urb(urb
, serial
->parent
->usb
,
1133 usb_rcvbulkpipe(serial
->parent
->usb
,
1135 bEndpointAddress
& 0x7F),
1136 urb
->transfer_buffer
, serial
->rx_data_length
,
1137 hso_std_serial_read_bulk_callback
, serial
);
1138 /* Give this to the USB subsystem so it can tell us when more data
1140 result
= usb_submit_urb(urb
, GFP_ATOMIC
);
1142 dev_err(&urb
->dev
->dev
, "%s failed submit serial rx_urb %d\n",
1150 static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial
*serial
)
1153 struct urb
*curr_urb
;
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
);
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
);
1169 static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial
*serial
)
1174 urb
= serial
->rx_urb
[0];
1175 if (serial
->open_count
> 0) {
1176 count
= put_rxbuf_data(urb
, serial
);
1180 /* Re issue a read as long as we receive data. */
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
);
1187 serial
->rx_state
= RX_IDLE
;
1191 /* read callback for Diag and CS port */
1192 static void hso_std_serial_read_bulk_callback(struct urb
*urb
)
1194 struct hso_serial
*serial
= urb
->context
;
1195 int status
= urb
->status
;
1199 D1("serial == NULL");
1201 } else if (status
) {
1202 log_usb_status(status
, __func__
);
1206 D4("\n--- Got serial_read_bulk callback %02x ---", status
);
1207 D1("Actual length = %d\n", urb
->actual_length
);
1208 DUMP1(urb
->transfer_buffer
, urb
->actual_length
);
1210 /* Anyone listening? */
1211 if (serial
->open_count
== 0)
1215 if (serial
->parent
->port_spec
& HSO_INFO_CRC_BUG
) {
1217 u8 crc_check
[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1219 urb
->actual_length
%
1220 serial
->in_endp
->wMaxPacketSize
;
1221 if (((rest
== 5) || (rest
== 6))
1222 && !memcmp(((u8
*) urb
->transfer_buffer
) +
1223 urb
->actual_length
- 4, crc_check
, 4)) {
1224 urb
->actual_length
-= 4;
1227 /* Valid data, handle RX data */
1228 spin_lock(&serial
->serial_lock
);
1229 serial
->rx_urb_filled
[hso_urb_to_index(serial
, urb
)] = 1;
1230 put_rxbuf_data_and_resubmit_bulk_urb(serial
);
1231 spin_unlock(&serial
->serial_lock
);
1232 } else if (status
== -ENOENT
|| status
== -ECONNRESET
) {
1233 /* Unlinked - check for throttled port. */
1234 D2("Port %d, successfully unlinked urb", serial
->minor
);
1235 spin_lock(&serial
->serial_lock
);
1236 serial
->rx_urb_filled
[hso_urb_to_index(serial
, urb
)] = 0;
1237 hso_resubmit_rx_bulk_urb(serial
, urb
);
1238 spin_unlock(&serial
->serial_lock
);
1240 D2("Port %d, status = %d for read urb", serial
->minor
, status
);
1246 * This needs to be a tasklet otherwise we will
1247 * end up recursively calling this function.
1249 static void hso_unthrottle_tasklet(struct hso_serial
*serial
)
1251 unsigned long flags
;
1253 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1254 if ((serial
->parent
->port_spec
& HSO_INTF_MUX
))
1255 put_rxbuf_data_and_resubmit_ctrl_urb(serial
);
1257 put_rxbuf_data_and_resubmit_bulk_urb(serial
);
1258 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1261 static void hso_unthrottle(struct tty_struct
*tty
)
1263 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1265 tasklet_hi_schedule(&serial
->unthrottle_tasklet
);
1268 static void hso_unthrottle_workfunc(struct work_struct
*work
)
1270 struct hso_serial
*serial
=
1271 container_of(work
, struct hso_serial
,
1272 retry_unthrottle_workqueue
);
1273 hso_unthrottle_tasklet(serial
);
1276 /* open the requested serial port */
1277 static int hso_serial_open(struct tty_struct
*tty
, struct file
*filp
)
1279 struct hso_serial
*serial
= get_serial_by_index(tty
->index
);
1283 if (serial
== NULL
|| serial
->magic
!= HSO_SERIAL_MAGIC
) {
1285 tty
->driver_data
= NULL
;
1286 D1("Failed to open port");
1290 mutex_lock(&serial
->parent
->mutex
);
1291 result
= usb_autopm_get_interface(serial
->parent
->interface
);
1295 D1("Opening %d", serial
->minor
);
1296 kref_get(&serial
->parent
->ref
);
1299 spin_lock_irq(&serial
->serial_lock
);
1300 tty
->driver_data
= serial
;
1301 tty_kref_put(serial
->tty
);
1302 serial
->tty
= tty_kref_get(tty
);
1303 spin_unlock_irq(&serial
->serial_lock
);
1305 /* check for port already opened, if not set the termios */
1306 serial
->open_count
++;
1307 if (serial
->open_count
== 1) {
1308 tty
->low_latency
= 1;
1309 serial
->rx_state
= RX_IDLE
;
1310 /* Force default termio settings */
1311 _hso_serial_set_termios(tty
, NULL
);
1312 tasklet_init(&serial
->unthrottle_tasklet
,
1313 (void (*)(unsigned long))hso_unthrottle_tasklet
,
1314 (unsigned long)serial
);
1315 INIT_WORK(&serial
->retry_unthrottle_workqueue
,
1316 hso_unthrottle_workfunc
);
1317 result
= hso_start_serial_device(serial
->parent
, GFP_KERNEL
);
1319 hso_stop_serial_device(serial
->parent
);
1320 serial
->open_count
--;
1321 kref_put(&serial
->parent
->ref
, hso_serial_ref_free
);
1324 D1("Port was already open");
1327 usb_autopm_put_interface(serial
->parent
->interface
);
1331 hso_serial_tiocmset(tty
, NULL
, TIOCM_RTS
| TIOCM_DTR
, 0);
1333 mutex_unlock(&serial
->parent
->mutex
);
1337 /* close the requested serial port */
1338 static void hso_serial_close(struct tty_struct
*tty
, struct file
*filp
)
1340 struct hso_serial
*serial
= tty
->driver_data
;
1343 D1("Closing serial port");
1345 /* Open failed, no close cleanup required */
1349 mutex_lock(&serial
->parent
->mutex
);
1350 usb_gone
= serial
->parent
->usb_gone
;
1353 usb_autopm_get_interface(serial
->parent
->interface
);
1355 /* reset the rts and dtr */
1356 /* do the actual close */
1357 serial
->open_count
--;
1358 kref_put(&serial
->parent
->ref
, hso_serial_ref_free
);
1359 if (serial
->open_count
<= 0) {
1360 serial
->open_count
= 0;
1361 spin_lock_irq(&serial
->serial_lock
);
1362 if (serial
->tty
== tty
) {
1363 serial
->tty
->driver_data
= NULL
;
1367 spin_unlock_irq(&serial
->serial_lock
);
1369 hso_stop_serial_device(serial
->parent
);
1370 tasklet_kill(&serial
->unthrottle_tasklet
);
1371 cancel_work_sync(&serial
->retry_unthrottle_workqueue
);
1375 usb_autopm_put_interface(serial
->parent
->interface
);
1377 mutex_unlock(&serial
->parent
->mutex
);
1380 /* close the requested serial port */
1381 static int hso_serial_write(struct tty_struct
*tty
, const unsigned char *buf
,
1384 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1385 int space
, tx_bytes
;
1386 unsigned long flags
;
1389 if (serial
== NULL
) {
1390 printk(KERN_ERR
"%s: serial is NULL\n", __func__
);
1394 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1396 space
= serial
->tx_data_length
- serial
->tx_buffer_count
;
1397 tx_bytes
= (count
< space
) ? count
: space
;
1402 memcpy(serial
->tx_buffer
+ serial
->tx_buffer_count
, buf
, tx_bytes
);
1403 serial
->tx_buffer_count
+= tx_bytes
;
1406 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1408 hso_kick_transmit(serial
);
1413 /* how much room is there for writing */
1414 static int hso_serial_write_room(struct tty_struct
*tty
)
1416 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1418 unsigned long flags
;
1420 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1421 room
= serial
->tx_data_length
- serial
->tx_buffer_count
;
1422 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1424 /* return free room */
1428 /* setup the term */
1429 static void hso_serial_set_termios(struct tty_struct
*tty
, struct ktermios
*old
)
1431 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1432 unsigned long flags
;
1435 D5("Termios called with: cflags new[%d] - old[%d]",
1436 tty
->termios
->c_cflag
, old
->c_cflag
);
1438 /* the actual setup */
1439 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1440 if (serial
->open_count
)
1441 _hso_serial_set_termios(tty
, old
);
1444 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1450 /* how many characters in the buffer */
1451 static int hso_serial_chars_in_buffer(struct tty_struct
*tty
)
1453 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1455 unsigned long flags
;
1461 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1462 chars
= serial
->tx_buffer_count
;
1463 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1467 static int tiocmget_submit_urb(struct hso_serial
*serial
,
1468 struct hso_tiocmget
*tiocmget
,
1469 struct usb_device
*usb
)
1473 if (serial
->parent
->usb_gone
)
1475 usb_fill_int_urb(tiocmget
->urb
, usb
,
1478 bEndpointAddress
& 0x7F),
1479 &tiocmget
->serial_state_notification
,
1480 sizeof(struct hso_serial_state_notification
),
1481 tiocmget_intr_callback
, serial
,
1482 tiocmget
->endp
->bInterval
);
1483 result
= usb_submit_urb(tiocmget
->urb
, GFP_ATOMIC
);
1485 dev_warn(&usb
->dev
, "%s usb_submit_urb failed %d\n", __func__
,
1492 static void tiocmget_intr_callback(struct urb
*urb
)
1494 struct hso_serial
*serial
= urb
->context
;
1495 struct hso_tiocmget
*tiocmget
;
1496 int status
= urb
->status
;
1497 u16 UART_state_bitmap
, prev_UART_state_bitmap
;
1498 struct uart_icount
*icount
;
1499 struct hso_serial_state_notification
*serial_state_notification
;
1500 struct usb_device
*usb
;
1506 log_usb_status(status
, __func__
);
1509 tiocmget
= serial
->tiocmget
;
1512 usb
= serial
->parent
->usb
;
1513 serial_state_notification
= &tiocmget
->serial_state_notification
;
1514 if (serial_state_notification
->bmRequestType
!= BM_REQUEST_TYPE
||
1515 serial_state_notification
->bNotification
!= B_NOTIFICATION
||
1516 le16_to_cpu(serial_state_notification
->wValue
) != W_VALUE
||
1517 le16_to_cpu(serial_state_notification
->wIndex
) != W_INDEX
||
1518 le16_to_cpu(serial_state_notification
->wLength
) != W_LENGTH
) {
1520 "hso received invalid serial state notification\n");
1521 DUMP(serial_state_notification
,
1522 sizeof(hso_serial_state_notifation
))
1525 UART_state_bitmap
= le16_to_cpu(serial_state_notification
->
1527 prev_UART_state_bitmap
= tiocmget
->prev_UART_state_bitmap
;
1528 icount
= &tiocmget
->icount
;
1529 spin_lock(&serial
->serial_lock
);
1530 if ((UART_state_bitmap
& B_OVERRUN
) !=
1531 (prev_UART_state_bitmap
& B_OVERRUN
))
1533 if ((UART_state_bitmap
& B_PARITY
) !=
1534 (prev_UART_state_bitmap
& B_PARITY
))
1536 if ((UART_state_bitmap
& B_FRAMING
) !=
1537 (prev_UART_state_bitmap
& B_FRAMING
))
1539 if ((UART_state_bitmap
& B_RING_SIGNAL
) &&
1540 !(prev_UART_state_bitmap
& B_RING_SIGNAL
))
1542 if ((UART_state_bitmap
& B_BREAK
) !=
1543 (prev_UART_state_bitmap
& B_BREAK
))
1545 if ((UART_state_bitmap
& B_TX_CARRIER
) !=
1546 (prev_UART_state_bitmap
& B_TX_CARRIER
))
1548 if ((UART_state_bitmap
& B_RX_CARRIER
) !=
1549 (prev_UART_state_bitmap
& B_RX_CARRIER
))
1551 tiocmget
->prev_UART_state_bitmap
= UART_state_bitmap
;
1552 spin_unlock(&serial
->serial_lock
);
1553 tiocmget
->intr_completed
= 1;
1554 wake_up_interruptible(&tiocmget
->waitq
);
1556 memset(serial_state_notification
, 0,
1557 sizeof(struct hso_serial_state_notification
));
1558 tiocmget_submit_urb(serial
,
1560 serial
->parent
->usb
);
1564 * next few functions largely stolen from drivers/serial/serial_core.c
1566 /* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1567 * - mask passed in arg for lines of interest
1568 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1569 * Caller should use TIOCGICOUNT to see which one it was
1572 hso_wait_modem_status(struct hso_serial
*serial
, unsigned long arg
)
1574 DECLARE_WAITQUEUE(wait
, current
);
1575 struct uart_icount cprev
, cnow
;
1576 struct hso_tiocmget
*tiocmget
;
1579 tiocmget
= serial
->tiocmget
;
1583 * note the counters on entry
1585 spin_lock_irq(&serial
->serial_lock
);
1586 memcpy(&cprev
, &tiocmget
->icount
, sizeof(struct uart_icount
));
1587 spin_unlock_irq(&serial
->serial_lock
);
1588 add_wait_queue(&tiocmget
->waitq
, &wait
);
1590 spin_lock_irq(&serial
->serial_lock
);
1591 memcpy(&cnow
, &tiocmget
->icount
, sizeof(struct uart_icount
));
1592 spin_unlock_irq(&serial
->serial_lock
);
1593 set_current_state(TASK_INTERRUPTIBLE
);
1594 if (((arg
& TIOCM_RNG
) && (cnow
.rng
!= cprev
.rng
)) ||
1595 ((arg
& TIOCM_DSR
) && (cnow
.dsr
!= cprev
.dsr
)) ||
1596 ((arg
& TIOCM_CD
) && (cnow
.dcd
!= cprev
.dcd
))) {
1601 /* see if a signal did it */
1602 if (signal_pending(current
)) {
1608 current
->state
= TASK_RUNNING
;
1609 remove_wait_queue(&tiocmget
->waitq
, &wait
);
1615 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
1616 * Return: write counters to the user passed counter struct
1617 * NB: both 1->0 and 0->1 transitions are counted except for
1618 * RI where only 0->1 is counted.
1620 static int hso_get_count(struct hso_serial
*serial
,
1621 struct serial_icounter_struct __user
*icnt
)
1623 struct serial_icounter_struct icount
;
1624 struct uart_icount cnow
;
1625 struct hso_tiocmget
*tiocmget
= serial
->tiocmget
;
1629 spin_lock_irq(&serial
->serial_lock
);
1630 memcpy(&cnow
, &tiocmget
->icount
, sizeof(struct uart_icount
));
1631 spin_unlock_irq(&serial
->serial_lock
);
1633 icount
.cts
= cnow
.cts
;
1634 icount
.dsr
= cnow
.dsr
;
1635 icount
.rng
= cnow
.rng
;
1636 icount
.dcd
= cnow
.dcd
;
1637 icount
.rx
= cnow
.rx
;
1638 icount
.tx
= cnow
.tx
;
1639 icount
.frame
= cnow
.frame
;
1640 icount
.overrun
= cnow
.overrun
;
1641 icount
.parity
= cnow
.parity
;
1642 icount
.brk
= cnow
.brk
;
1643 icount
.buf_overrun
= cnow
.buf_overrun
;
1645 return copy_to_user(icnt
, &icount
, sizeof(icount
)) ? -EFAULT
: 0;
1649 static int hso_serial_tiocmget(struct tty_struct
*tty
, struct file
*file
)
1652 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1653 struct hso_tiocmget
*tiocmget
;
1654 u16 UART_state_bitmap
;
1658 D1("no tty structures");
1661 spin_lock_irq(&serial
->serial_lock
);
1662 retval
= ((serial
->rts_state
) ? TIOCM_RTS
: 0) |
1663 ((serial
->dtr_state
) ? TIOCM_DTR
: 0);
1664 tiocmget
= serial
->tiocmget
;
1667 UART_state_bitmap
= le16_to_cpu(
1668 tiocmget
->prev_UART_state_bitmap
);
1669 if (UART_state_bitmap
& B_RING_SIGNAL
)
1670 retval
|= TIOCM_RNG
;
1671 if (UART_state_bitmap
& B_RX_CARRIER
)
1673 if (UART_state_bitmap
& B_TX_CARRIER
)
1674 retval
|= TIOCM_DSR
;
1676 spin_unlock_irq(&serial
->serial_lock
);
1680 static int hso_serial_tiocmset(struct tty_struct
*tty
, struct file
*file
,
1681 unsigned int set
, unsigned int clear
)
1684 unsigned long flags
;
1686 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1690 D1("no tty structures");
1693 if_num
= serial
->parent
->interface
->altsetting
->desc
.bInterfaceNumber
;
1695 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1696 if (set
& TIOCM_RTS
)
1697 serial
->rts_state
= 1;
1698 if (set
& TIOCM_DTR
)
1699 serial
->dtr_state
= 1;
1701 if (clear
& TIOCM_RTS
)
1702 serial
->rts_state
= 0;
1703 if (clear
& TIOCM_DTR
)
1704 serial
->dtr_state
= 0;
1706 if (serial
->dtr_state
)
1708 if (serial
->rts_state
)
1711 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1713 return usb_control_msg(serial
->parent
->usb
,
1714 usb_rcvctrlpipe(serial
->parent
->usb
, 0), 0x22,
1715 0x21, val
, if_num
, NULL
, 0,
1716 USB_CTRL_SET_TIMEOUT
);
1719 static int hso_serial_ioctl(struct tty_struct
*tty
, struct file
*file
,
1720 unsigned int cmd
, unsigned long arg
)
1722 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1723 void __user
*uarg
= (void __user
*)arg
;
1725 D4("IOCTL cmd: %d, arg: %ld", cmd
, arg
);
1731 ret
= hso_wait_modem_status(serial
, arg
);
1735 ret
= hso_get_count(serial
, uarg
);
1745 /* starts a transmit */
1746 static void hso_kick_transmit(struct hso_serial
*serial
)
1749 unsigned long flags
;
1752 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1753 if (!serial
->tx_buffer_count
)
1756 if (serial
->tx_urb_used
)
1759 /* Wakeup USB interface if necessary */
1760 if (hso_get_activity(serial
->parent
) == -EAGAIN
)
1763 /* Switch pointers around to avoid memcpy */
1764 temp
= serial
->tx_buffer
;
1765 serial
->tx_buffer
= serial
->tx_data
;
1766 serial
->tx_data
= temp
;
1767 serial
->tx_data_count
= serial
->tx_buffer_count
;
1768 serial
->tx_buffer_count
= 0;
1770 /* If temp is set, it means we switched buffers */
1771 if (temp
&& serial
->write_data
) {
1772 res
= serial
->write_data(serial
);
1774 serial
->tx_urb_used
= 1;
1777 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1780 /* make a request (for reading and writing data to muxed serial port) */
1781 static int mux_device_request(struct hso_serial
*serial
, u8 type
, u16 port
,
1782 struct urb
*ctrl_urb
,
1783 struct usb_ctrlrequest
*ctrl_req
,
1784 u8
*ctrl_urb_data
, u32 size
)
1790 if (!serial
|| !ctrl_urb
|| !ctrl_req
) {
1791 printk(KERN_ERR
"%s: Wrong arguments\n", __func__
);
1796 ctrl_req
->wValue
= 0;
1797 ctrl_req
->wIndex
= cpu_to_le16(hso_port_to_mux(port
));
1798 ctrl_req
->wLength
= cpu_to_le16(size
);
1800 if (type
== USB_CDC_GET_ENCAPSULATED_RESPONSE
) {
1801 /* Reading command */
1802 ctrl_req
->bRequestType
= USB_DIR_IN
|
1803 USB_TYPE_OPTION_VENDOR
|
1804 USB_RECIP_INTERFACE
;
1805 ctrl_req
->bRequest
= USB_CDC_GET_ENCAPSULATED_RESPONSE
;
1806 pipe
= usb_rcvctrlpipe(serial
->parent
->usb
, 0);
1808 /* Writing command */
1809 ctrl_req
->bRequestType
= USB_DIR_OUT
|
1810 USB_TYPE_OPTION_VENDOR
|
1811 USB_RECIP_INTERFACE
;
1812 ctrl_req
->bRequest
= USB_CDC_SEND_ENCAPSULATED_COMMAND
;
1813 pipe
= usb_sndctrlpipe(serial
->parent
->usb
, 0);
1816 D2("%s command (%02x) len: %d, port: %d",
1817 type
== USB_CDC_GET_ENCAPSULATED_RESPONSE
? "Read" : "Write",
1818 ctrl_req
->bRequestType
, ctrl_req
->wLength
, port
);
1821 ctrl_urb
->transfer_flags
= 0;
1822 usb_fill_control_urb(ctrl_urb
,
1823 serial
->parent
->usb
,
1826 ctrl_urb_data
, size
, ctrl_callback
, serial
);
1827 /* Send it on merry way */
1828 result
= usb_submit_urb(ctrl_urb
, GFP_ATOMIC
);
1830 dev_err(&ctrl_urb
->dev
->dev
,
1831 "%s failed submit ctrl_urb %d type %d", __func__
,
1840 /* called by intr_callback when read occurs */
1841 static int hso_mux_serial_read(struct hso_serial
*serial
)
1847 memset(serial
->rx_data
[0], 0, CTRL_URB_RX_SIZE
);
1848 /* make the request */
1850 if (serial
->num_rx_urbs
!= 1) {
1851 dev_err(&serial
->parent
->interface
->dev
,
1852 "ERROR: mux'd reads with multiple buffers "
1856 return mux_device_request(serial
,
1857 USB_CDC_GET_ENCAPSULATED_RESPONSE
,
1858 serial
->parent
->port_spec
& HSO_PORT_MASK
,
1860 &serial
->ctrl_req_rx
,
1861 serial
->rx_data
[0], serial
->rx_data_length
);
1864 /* used for muxed serial port callback (muxed serial read) */
1865 static void intr_callback(struct urb
*urb
)
1867 struct hso_shared_int
*shared_int
= urb
->context
;
1868 struct hso_serial
*serial
;
1869 unsigned char *port_req
;
1870 int status
= urb
->status
;
1873 usb_mark_last_busy(urb
->dev
);
1881 log_usb_status(status
, __func__
);
1884 D4("\n--- Got intr callback 0x%02X ---", status
);
1887 port_req
= urb
->transfer_buffer
;
1888 D4(" port_req = 0x%.2X\n", *port_req
);
1889 /* loop over all muxed ports to find the one sending this */
1890 for (i
= 0; i
< 8; i
++) {
1891 /* max 8 channels on MUX */
1892 if (*port_req
& (1 << i
)) {
1893 serial
= get_serial_by_shared_int_and_type(shared_int
,
1895 if (serial
!= NULL
) {
1896 D1("Pending read interrupt on port %d\n", i
);
1897 spin_lock(&serial
->serial_lock
);
1898 if (serial
->rx_state
== RX_IDLE
) {
1899 /* Setup and send a ctrl req read on
1901 if (!serial
->rx_urb_filled
[0]) {
1902 serial
->rx_state
= RX_SENT
;
1903 hso_mux_serial_read(serial
);
1905 serial
->rx_state
= RX_PENDING
;
1908 D1("Already pending a read on "
1911 spin_unlock(&serial
->serial_lock
);
1915 /* Resubmit interrupt urb */
1916 hso_mux_submit_intr_urb(shared_int
, urb
->dev
, GFP_ATOMIC
);
1919 /* called for writing to muxed serial port */
1920 static int hso_mux_serial_write_data(struct hso_serial
*serial
)
1925 return mux_device_request(serial
,
1926 USB_CDC_SEND_ENCAPSULATED_COMMAND
,
1927 serial
->parent
->port_spec
& HSO_PORT_MASK
,
1929 &serial
->ctrl_req_tx
,
1930 serial
->tx_data
, serial
->tx_data_count
);
1933 /* write callback for Diag and CS port */
1934 static void hso_std_serial_write_bulk_callback(struct urb
*urb
)
1936 struct hso_serial
*serial
= urb
->context
;
1937 int status
= urb
->status
;
1938 struct tty_struct
*tty
;
1942 D1("serial == NULL");
1946 spin_lock(&serial
->serial_lock
);
1947 serial
->tx_urb_used
= 0;
1948 tty
= tty_kref_get(serial
->tty
);
1949 spin_unlock(&serial
->serial_lock
);
1951 log_usb_status(status
, __func__
);
1955 hso_put_activity(serial
->parent
);
1960 hso_kick_transmit(serial
);
1966 /* called for writing diag or CS serial port */
1967 static int hso_std_serial_write_data(struct hso_serial
*serial
)
1969 int count
= serial
->tx_data_count
;
1972 usb_fill_bulk_urb(serial
->tx_urb
,
1973 serial
->parent
->usb
,
1974 usb_sndbulkpipe(serial
->parent
->usb
,
1976 bEndpointAddress
& 0x7F),
1977 serial
->tx_data
, serial
->tx_data_count
,
1978 hso_std_serial_write_bulk_callback
, serial
);
1980 result
= usb_submit_urb(serial
->tx_urb
, GFP_ATOMIC
);
1982 dev_warn(&serial
->parent
->usb
->dev
,
1983 "Failed to submit urb - res %d\n", result
);
1990 /* callback after read or write on muxed serial port */
1991 static void ctrl_callback(struct urb
*urb
)
1993 struct hso_serial
*serial
= urb
->context
;
1994 struct usb_ctrlrequest
*req
;
1995 int status
= urb
->status
;
1996 struct tty_struct
*tty
;
2002 spin_lock(&serial
->serial_lock
);
2003 serial
->tx_urb_used
= 0;
2004 tty
= tty_kref_get(serial
->tty
);
2005 spin_unlock(&serial
->serial_lock
);
2007 log_usb_status(status
, __func__
);
2013 req
= (struct usb_ctrlrequest
*)(urb
->setup_packet
);
2014 D4("\n--- Got muxed ctrl callback 0x%02X ---", status
);
2015 D4("Actual length of urb = %d\n", urb
->actual_length
);
2016 DUMP1(urb
->transfer_buffer
, urb
->actual_length
);
2018 if (req
->bRequestType
==
2019 (USB_DIR_IN
| USB_TYPE_OPTION_VENDOR
| USB_RECIP_INTERFACE
)) {
2020 /* response to a read command */
2021 serial
->rx_urb_filled
[0] = 1;
2022 spin_lock(&serial
->serial_lock
);
2023 put_rxbuf_data_and_resubmit_ctrl_urb(serial
);
2024 spin_unlock(&serial
->serial_lock
);
2026 hso_put_activity(serial
->parent
);
2029 /* response to a write command */
2030 hso_kick_transmit(serial
);
2035 /* handle RX data for serial port */
2036 static int put_rxbuf_data(struct urb
*urb
, struct hso_serial
*serial
)
2038 struct tty_struct
*tty
;
2039 int write_length_remaining
= 0;
2043 if (urb
== NULL
|| serial
== NULL
) {
2044 D1("serial = NULL");
2048 /* All callers to put_rxbuf_data hold serial_lock */
2049 tty
= tty_kref_get(serial
->tty
);
2051 /* Push data to tty */
2053 write_length_remaining
= urb
->actual_length
-
2054 serial
->curr_rx_urb_offset
;
2055 D1("data to push to tty");
2056 while (write_length_remaining
) {
2057 if (test_bit(TTY_THROTTLED
, &tty
->flags
)) {
2061 curr_write_len
= tty_insert_flip_string
2062 (tty
, urb
->transfer_buffer
+
2063 serial
->curr_rx_urb_offset
,
2064 write_length_remaining
);
2065 serial
->curr_rx_urb_offset
+= curr_write_len
;
2066 write_length_remaining
-= curr_write_len
;
2067 tty_flip_buffer_push(tty
);
2070 if (write_length_remaining
== 0) {
2071 serial
->curr_rx_urb_offset
= 0;
2072 serial
->rx_urb_filled
[hso_urb_to_index(serial
, urb
)] = 0;
2075 return write_length_remaining
;
2079 /* Base driver functions */
2081 static void hso_log_port(struct hso_device
*hso_dev
)
2086 switch (hso_dev
->port_spec
& HSO_PORT_MASK
) {
2087 case HSO_PORT_CONTROL
:
2088 port_type
= "Control";
2091 port_type
= "Application";
2096 case HSO_PORT_GPS_CONTROL
:
2097 port_type
= "GPS control";
2100 port_type
= "Application2";
2106 port_type
= "Diagnostic";
2108 case HSO_PORT_DIAG2
:
2109 port_type
= "Diagnostic2";
2111 case HSO_PORT_MODEM
:
2112 port_type
= "Modem";
2114 case HSO_PORT_NETWORK
:
2115 port_type
= "Network";
2118 port_type
= "Unknown";
2121 if ((hso_dev
->port_spec
& HSO_PORT_MASK
) == HSO_PORT_NETWORK
) {
2122 sprintf(port_dev
, "%s", dev2net(hso_dev
)->net
->name
);
2124 sprintf(port_dev
, "/dev/%s%d", tty_filename
,
2125 dev2ser(hso_dev
)->minor
);
2127 dev_dbg(&hso_dev
->interface
->dev
, "HSO: Found %s port %s\n",
2128 port_type
, port_dev
);
2131 static int hso_start_net_device(struct hso_device
*hso_dev
)
2134 struct hso_net
*hso_net
= dev2net(hso_dev
);
2139 /* send URBs for all read buffers */
2140 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
2142 /* Prep a receive URB */
2143 usb_fill_bulk_urb(hso_net
->mux_bulk_rx_urb_pool
[i
],
2145 usb_rcvbulkpipe(hso_dev
->usb
,
2147 bEndpointAddress
& 0x7F),
2148 hso_net
->mux_bulk_rx_buf_pool
[i
],
2149 MUX_BULK_RX_BUF_SIZE
, read_bulk_callback
,
2152 /* Put it out there so the device can send us stuff */
2153 result
= usb_submit_urb(hso_net
->mux_bulk_rx_urb_pool
[i
],
2156 dev_warn(&hso_dev
->usb
->dev
,
2157 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__
,
2164 static int hso_stop_net_device(struct hso_device
*hso_dev
)
2167 struct hso_net
*hso_net
= dev2net(hso_dev
);
2172 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
2173 if (hso_net
->mux_bulk_rx_urb_pool
[i
])
2174 usb_kill_urb(hso_net
->mux_bulk_rx_urb_pool
[i
]);
2177 if (hso_net
->mux_bulk_tx_urb
)
2178 usb_kill_urb(hso_net
->mux_bulk_tx_urb
);
2183 static int hso_start_serial_device(struct hso_device
*hso_dev
, gfp_t flags
)
2186 struct hso_serial
*serial
= dev2ser(hso_dev
);
2191 /* If it is not the MUX port fill in and submit a bulk urb (already
2192 * allocated in hso_serial_start) */
2193 if (!(serial
->parent
->port_spec
& HSO_INTF_MUX
)) {
2194 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
2195 usb_fill_bulk_urb(serial
->rx_urb
[i
],
2196 serial
->parent
->usb
,
2197 usb_rcvbulkpipe(serial
->parent
->usb
,
2202 serial
->rx_data_length
,
2203 hso_std_serial_read_bulk_callback
,
2205 result
= usb_submit_urb(serial
->rx_urb
[i
], flags
);
2207 dev_warn(&serial
->parent
->usb
->dev
,
2208 "Failed to submit urb - res %d\n",
2214 mutex_lock(&serial
->shared_int
->shared_int_lock
);
2215 if (!serial
->shared_int
->use_count
) {
2217 hso_mux_submit_intr_urb(serial
->shared_int
,
2218 hso_dev
->usb
, flags
);
2220 serial
->shared_int
->use_count
++;
2221 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
2223 if (serial
->tiocmget
)
2224 tiocmget_submit_urb(serial
,
2226 serial
->parent
->usb
);
2230 static int hso_stop_serial_device(struct hso_device
*hso_dev
)
2233 struct hso_serial
*serial
= dev2ser(hso_dev
);
2234 struct hso_tiocmget
*tiocmget
;
2239 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
2240 if (serial
->rx_urb
[i
]) {
2241 usb_kill_urb(serial
->rx_urb
[i
]);
2242 serial
->rx_urb_filled
[i
] = 0;
2245 serial
->curr_rx_urb_idx
= 0;
2246 serial
->curr_rx_urb_offset
= 0;
2249 usb_kill_urb(serial
->tx_urb
);
2251 if (serial
->shared_int
) {
2252 mutex_lock(&serial
->shared_int
->shared_int_lock
);
2253 if (serial
->shared_int
->use_count
&&
2254 (--serial
->shared_int
->use_count
== 0)) {
2257 urb
= serial
->shared_int
->shared_intr_urb
;
2261 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
2263 tiocmget
= serial
->tiocmget
;
2265 wake_up_interruptible(&tiocmget
->waitq
);
2266 usb_kill_urb(tiocmget
->urb
);
2272 static void hso_serial_common_free(struct hso_serial
*serial
)
2276 if (serial
->parent
->dev
)
2277 device_remove_file(serial
->parent
->dev
, &dev_attr_hsotype
);
2279 tty_unregister_device(tty_drv
, serial
->minor
);
2281 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
2282 /* unlink and free RX URB */
2283 usb_free_urb(serial
->rx_urb
[i
]);
2284 /* free the RX buffer */
2285 kfree(serial
->rx_data
[i
]);
2288 /* unlink and free TX URB */
2289 usb_free_urb(serial
->tx_urb
);
2290 kfree(serial
->tx_data
);
2293 static int hso_serial_common_create(struct hso_serial
*serial
, int num_urbs
,
2294 int rx_size
, int tx_size
)
2300 minor
= get_free_serial_index();
2304 /* register our minor number */
2305 serial
->parent
->dev
= tty_register_device(tty_drv
, minor
,
2306 &serial
->parent
->interface
->dev
);
2307 dev
= serial
->parent
->dev
;
2308 dev
->driver_data
= serial
->parent
;
2309 i
= device_create_file(dev
, &dev_attr_hsotype
);
2311 /* fill in specific data for later use */
2312 serial
->minor
= minor
;
2313 serial
->magic
= HSO_SERIAL_MAGIC
;
2314 spin_lock_init(&serial
->serial_lock
);
2315 serial
->num_rx_urbs
= num_urbs
;
2317 /* RX, allocate urb and initialize */
2319 /* prepare our RX buffer */
2320 serial
->rx_data_length
= rx_size
;
2321 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
2322 serial
->rx_urb
[i
] = usb_alloc_urb(0, GFP_KERNEL
);
2323 if (!serial
->rx_urb
[i
]) {
2324 dev_err(dev
, "Could not allocate urb?\n");
2327 serial
->rx_urb
[i
]->transfer_buffer
= NULL
;
2328 serial
->rx_urb
[i
]->transfer_buffer_length
= 0;
2329 serial
->rx_data
[i
] = kzalloc(serial
->rx_data_length
,
2331 if (!serial
->rx_data
[i
]) {
2332 dev_err(dev
, "%s - Out of memory\n", __func__
);
2337 /* TX, allocate urb and initialize */
2338 serial
->tx_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2339 if (!serial
->tx_urb
) {
2340 dev_err(dev
, "Could not allocate urb?\n");
2343 serial
->tx_urb
->transfer_buffer
= NULL
;
2344 serial
->tx_urb
->transfer_buffer_length
= 0;
2345 /* prepare our TX buffer */
2346 serial
->tx_data_count
= 0;
2347 serial
->tx_buffer_count
= 0;
2348 serial
->tx_data_length
= tx_size
;
2349 serial
->tx_data
= kzalloc(serial
->tx_data_length
, GFP_KERNEL
);
2350 if (!serial
->tx_data
) {
2351 dev_err(dev
, "%s - Out of memory", __func__
);
2354 serial
->tx_buffer
= kzalloc(serial
->tx_data_length
, GFP_KERNEL
);
2355 if (!serial
->tx_buffer
) {
2356 dev_err(dev
, "%s - Out of memory", __func__
);
2362 hso_serial_common_free(serial
);
2366 /* Creates a general hso device */
2367 static struct hso_device
*hso_create_device(struct usb_interface
*intf
,
2370 struct hso_device
*hso_dev
;
2372 hso_dev
= kzalloc(sizeof(*hso_dev
), GFP_ATOMIC
);
2376 hso_dev
->port_spec
= port_spec
;
2377 hso_dev
->usb
= interface_to_usbdev(intf
);
2378 hso_dev
->interface
= intf
;
2379 kref_init(&hso_dev
->ref
);
2380 mutex_init(&hso_dev
->mutex
);
2382 INIT_WORK(&hso_dev
->async_get_intf
, async_get_intf
);
2383 INIT_WORK(&hso_dev
->async_put_intf
, async_put_intf
);
2388 /* Removes a network device in the network device table */
2389 static int remove_net_device(struct hso_device
*hso_dev
)
2393 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
2394 if (network_table
[i
] == hso_dev
) {
2395 network_table
[i
] = NULL
;
2399 if (i
== HSO_MAX_NET_DEVICES
)
2404 /* Frees our network device */
2405 static void hso_free_net_device(struct hso_device
*hso_dev
)
2408 struct hso_net
*hso_net
= dev2net(hso_dev
);
2414 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
2415 usb_free_urb(hso_net
->mux_bulk_rx_urb_pool
[i
]);
2416 kfree(hso_net
->mux_bulk_rx_buf_pool
[i
]);
2418 usb_free_urb(hso_net
->mux_bulk_tx_urb
);
2419 kfree(hso_net
->mux_bulk_tx_buf
);
2421 remove_net_device(hso_net
->parent
);
2424 unregister_netdev(hso_net
->net
);
2425 free_netdev(hso_net
->net
);
2431 static const struct net_device_ops hso_netdev_ops
= {
2432 .ndo_open
= hso_net_open
,
2433 .ndo_stop
= hso_net_close
,
2434 .ndo_start_xmit
= hso_net_start_xmit
,
2435 .ndo_tx_timeout
= hso_net_tx_timeout
,
2438 /* initialize the network interface */
2439 static void hso_net_init(struct net_device
*net
)
2441 struct hso_net
*hso_net
= netdev_priv(net
);
2443 D1("sizeof hso_net is %d", (int)sizeof(*hso_net
));
2445 /* fill in the other fields */
2446 net
->netdev_ops
= &hso_netdev_ops
;
2447 net
->watchdog_timeo
= HSO_NET_TX_TIMEOUT
;
2448 net
->flags
= IFF_POINTOPOINT
| IFF_NOARP
| IFF_MULTICAST
;
2449 net
->type
= ARPHRD_NONE
;
2450 net
->mtu
= DEFAULT_MTU
- 14;
2451 net
->tx_queue_len
= 10;
2452 SET_ETHTOOL_OPS(net
, &ops
);
2454 /* and initialize the semaphore */
2455 spin_lock_init(&hso_net
->net_lock
);
2458 /* Adds a network device in the network device table */
2459 static int add_net_device(struct hso_device
*hso_dev
)
2463 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
2464 if (network_table
[i
] == NULL
) {
2465 network_table
[i
] = hso_dev
;
2469 if (i
== HSO_MAX_NET_DEVICES
)
2474 static int hso_radio_toggle(void *data
, enum rfkill_state state
)
2476 struct hso_device
*hso_dev
= data
;
2477 int enabled
= (state
== RFKILL_STATE_ON
);
2480 mutex_lock(&hso_dev
->mutex
);
2481 if (hso_dev
->usb_gone
)
2484 rv
= usb_control_msg(hso_dev
->usb
, usb_rcvctrlpipe(hso_dev
->usb
, 0),
2485 enabled
? 0x82 : 0x81, 0x40, 0, 0, NULL
, 0,
2486 USB_CTRL_SET_TIMEOUT
);
2487 mutex_unlock(&hso_dev
->mutex
);
2491 /* Creates and sets up everything for rfkill */
2492 static void hso_create_rfkill(struct hso_device
*hso_dev
,
2493 struct usb_interface
*interface
)
2495 struct hso_net
*hso_net
= dev2net(hso_dev
);
2496 struct device
*dev
= &hso_net
->net
->dev
;
2499 hso_net
->rfkill
= rfkill_allocate(&interface_to_usbdev(interface
)->dev
,
2501 if (!hso_net
->rfkill
) {
2502 dev_err(dev
, "%s - Out of memory\n", __func__
);
2505 rfkn
= kzalloc(20, GFP_KERNEL
);
2507 rfkill_free(hso_net
->rfkill
);
2508 hso_net
->rfkill
= NULL
;
2509 dev_err(dev
, "%s - Out of memory\n", __func__
);
2512 snprintf(rfkn
, 20, "hso-%d",
2513 interface
->altsetting
->desc
.bInterfaceNumber
);
2514 hso_net
->rfkill
->name
= rfkn
;
2515 hso_net
->rfkill
->state
= RFKILL_STATE_ON
;
2516 hso_net
->rfkill
->data
= hso_dev
;
2517 hso_net
->rfkill
->toggle_radio
= hso_radio_toggle
;
2518 if (rfkill_register(hso_net
->rfkill
) < 0) {
2520 hso_net
->rfkill
->name
= NULL
;
2521 rfkill_free(hso_net
->rfkill
);
2522 hso_net
->rfkill
= NULL
;
2523 dev_err(dev
, "%s - Failed to register rfkill\n", __func__
);
2528 /* Creates our network device */
2529 static struct hso_device
*hso_create_net_device(struct usb_interface
*interface
)
2532 struct net_device
*net
;
2533 struct hso_net
*hso_net
;
2534 struct hso_device
*hso_dev
;
2536 hso_dev
= hso_create_device(interface
, HSO_INTF_MUX
| HSO_PORT_NETWORK
);
2540 /* allocate our network device, then we can put in our private data */
2541 /* call hso_net_init to do the basic initialization */
2542 net
= alloc_netdev(sizeof(struct hso_net
), "hso%d", hso_net_init
);
2544 dev_err(&interface
->dev
, "Unable to create ethernet device\n");
2548 hso_net
= netdev_priv(net
);
2550 hso_dev
->port_data
.dev_net
= hso_net
;
2552 hso_net
->parent
= hso_dev
;
2554 hso_net
->in_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
,
2556 if (!hso_net
->in_endp
) {
2557 dev_err(&interface
->dev
, "Can't find BULK IN endpoint\n");
2560 hso_net
->out_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
,
2562 if (!hso_net
->out_endp
) {
2563 dev_err(&interface
->dev
, "Can't find BULK OUT endpoint\n");
2566 SET_NETDEV_DEV(net
, &interface
->dev
);
2568 /* registering our net device */
2569 result
= register_netdev(net
);
2571 dev_err(&interface
->dev
, "Failed to register device\n");
2575 /* start allocating */
2576 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
2577 hso_net
->mux_bulk_rx_urb_pool
[i
] = usb_alloc_urb(0, GFP_KERNEL
);
2578 if (!hso_net
->mux_bulk_rx_urb_pool
[i
]) {
2579 dev_err(&interface
->dev
, "Could not allocate rx urb\n");
2582 hso_net
->mux_bulk_rx_buf_pool
[i
] = kzalloc(MUX_BULK_RX_BUF_SIZE
,
2584 if (!hso_net
->mux_bulk_rx_buf_pool
[i
]) {
2585 dev_err(&interface
->dev
, "Could not allocate rx buf\n");
2589 hso_net
->mux_bulk_tx_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2590 if (!hso_net
->mux_bulk_tx_urb
) {
2591 dev_err(&interface
->dev
, "Could not allocate tx urb\n");
2594 hso_net
->mux_bulk_tx_buf
= kzalloc(MUX_BULK_TX_BUF_SIZE
, GFP_KERNEL
);
2595 if (!hso_net
->mux_bulk_tx_buf
) {
2596 dev_err(&interface
->dev
, "Could not allocate tx buf\n");
2600 add_net_device(hso_dev
);
2602 hso_log_port(hso_dev
);
2604 hso_create_rfkill(hso_dev
, interface
);
2608 hso_free_net_device(hso_dev
);
2612 static void hso_free_tiomget(struct hso_serial
*serial
)
2614 struct hso_tiocmget
*tiocmget
= serial
->tiocmget
;
2617 if (tiocmget
->urb
) {
2618 usb_free_urb(tiocmget
->urb
);
2619 tiocmget
->urb
= NULL
;
2621 serial
->tiocmget
= NULL
;
2626 /* Frees an AT channel ( goes for both mux and non-mux ) */
2627 static void hso_free_serial_device(struct hso_device
*hso_dev
)
2629 struct hso_serial
*serial
= dev2ser(hso_dev
);
2633 set_serial_by_index(serial
->minor
, NULL
);
2635 hso_serial_common_free(serial
);
2637 if (serial
->shared_int
) {
2638 mutex_lock(&serial
->shared_int
->shared_int_lock
);
2639 if (--serial
->shared_int
->ref_count
== 0)
2640 hso_free_shared_int(serial
->shared_int
);
2642 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
2644 hso_free_tiomget(serial
);
2649 /* Creates a bulk AT channel */
2650 static struct hso_device
*hso_create_bulk_serial_device(
2651 struct usb_interface
*interface
, int port
)
2653 struct hso_device
*hso_dev
;
2654 struct hso_serial
*serial
;
2656 struct hso_tiocmget
*tiocmget
;
2658 hso_dev
= hso_create_device(interface
, port
);
2662 serial
= kzalloc(sizeof(*serial
), GFP_KERNEL
);
2666 serial
->parent
= hso_dev
;
2667 hso_dev
->port_data
.dev_serial
= serial
;
2669 if ((port
& HSO_PORT_MASK
) == HSO_PORT_MODEM
) {
2671 serial
->tiocmget
= kzalloc(sizeof(struct hso_tiocmget
),
2673 /* it isn't going to break our heart if serial->tiocmget
2674 * allocation fails don't bother checking this.
2676 if (serial
->tiocmget
) {
2677 tiocmget
= serial
->tiocmget
;
2678 tiocmget
->urb
= usb_alloc_urb(0, GFP_KERNEL
);
2679 if (tiocmget
->urb
) {
2680 mutex_init(&tiocmget
->mutex
);
2681 init_waitqueue_head(&tiocmget
->waitq
);
2682 tiocmget
->endp
= hso_get_ep(
2684 USB_ENDPOINT_XFER_INT
,
2687 hso_free_tiomget(serial
);
2693 if (hso_serial_common_create(serial
, num_urbs
, BULK_URB_RX_SIZE
,
2697 serial
->in_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
,
2699 if (!serial
->in_endp
) {
2700 dev_err(&interface
->dev
, "Failed to find BULK IN ep\n");
2706 hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
, USB_DIR_OUT
))) {
2707 dev_err(&interface
->dev
, "Failed to find BULK IN ep\n");
2711 serial
->write_data
= hso_std_serial_write_data
;
2713 /* and record this serial */
2714 set_serial_by_index(serial
->minor
, serial
);
2716 /* setup the proc dirs and files if needed */
2717 hso_log_port(hso_dev
);
2719 /* done, return it */
2723 hso_serial_common_free(serial
);
2725 hso_free_tiomget(serial
);
2731 /* Creates a multiplexed AT channel */
2733 struct hso_device
*hso_create_mux_serial_device(struct usb_interface
*interface
,
2735 struct hso_shared_int
*mux
)
2737 struct hso_device
*hso_dev
;
2738 struct hso_serial
*serial
;
2741 port_spec
= HSO_INTF_MUX
;
2742 port_spec
&= ~HSO_PORT_MASK
;
2744 port_spec
|= hso_mux_to_port(port
);
2745 if ((port_spec
& HSO_PORT_MASK
) == HSO_PORT_NO_PORT
)
2748 hso_dev
= hso_create_device(interface
, port_spec
);
2752 serial
= kzalloc(sizeof(*serial
), GFP_KERNEL
);
2756 hso_dev
->port_data
.dev_serial
= serial
;
2757 serial
->parent
= hso_dev
;
2759 if (hso_serial_common_create
2760 (serial
, 1, CTRL_URB_RX_SIZE
, CTRL_URB_TX_SIZE
))
2763 serial
->tx_data_length
--;
2764 serial
->write_data
= hso_mux_serial_write_data
;
2766 serial
->shared_int
= mux
;
2767 mutex_lock(&serial
->shared_int
->shared_int_lock
);
2768 serial
->shared_int
->ref_count
++;
2769 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
2771 /* and record this serial */
2772 set_serial_by_index(serial
->minor
, serial
);
2774 /* setup the proc dirs and files if needed */
2775 hso_log_port(hso_dev
);
2777 /* done, return it */
2782 tty_unregister_device(tty_drv
, serial
->minor
);
2791 static void hso_free_shared_int(struct hso_shared_int
*mux
)
2793 usb_free_urb(mux
->shared_intr_urb
);
2794 kfree(mux
->shared_intr_buf
);
2795 mutex_unlock(&mux
->shared_int_lock
);
2800 struct hso_shared_int
*hso_create_shared_int(struct usb_interface
*interface
)
2802 struct hso_shared_int
*mux
= kzalloc(sizeof(*mux
), GFP_KERNEL
);
2807 mux
->intr_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_INT
,
2809 if (!mux
->intr_endp
) {
2810 dev_err(&interface
->dev
, "Can't find INT IN endpoint\n");
2814 mux
->shared_intr_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2815 if (!mux
->shared_intr_urb
) {
2816 dev_err(&interface
->dev
, "Could not allocate intr urb?");
2819 mux
->shared_intr_buf
= kzalloc(mux
->intr_endp
->wMaxPacketSize
,
2821 if (!mux
->shared_intr_buf
) {
2822 dev_err(&interface
->dev
, "Could not allocate intr buf?");
2826 mutex_init(&mux
->shared_int_lock
);
2831 kfree(mux
->shared_intr_buf
);
2832 usb_free_urb(mux
->shared_intr_urb
);
2837 /* Gets the port spec for a certain interface */
2838 static int hso_get_config_data(struct usb_interface
*interface
)
2840 struct usb_device
*usbdev
= interface_to_usbdev(interface
);
2842 u32 if_num
= interface
->altsetting
->desc
.bInterfaceNumber
;
2845 if (usb_control_msg(usbdev
, usb_rcvctrlpipe(usbdev
, 0),
2846 0x86, 0xC0, 0, 0, config_data
, 17,
2847 USB_CTRL_SET_TIMEOUT
) != 0x11) {
2851 switch (config_data
[if_num
]) {
2856 result
= HSO_PORT_DIAG
;
2859 result
= HSO_PORT_GPS
;
2862 result
= HSO_PORT_GPS_CONTROL
;
2865 result
= HSO_PORT_APP
;
2868 result
= HSO_PORT_APP2
;
2871 result
= HSO_PORT_CONTROL
;
2874 result
= HSO_PORT_NETWORK
;
2877 result
= HSO_PORT_MODEM
;
2880 result
= HSO_PORT_MSD
;
2883 result
= HSO_PORT_PCSC
;
2886 result
= HSO_PORT_VOICE
;
2893 result
|= HSO_INTF_BULK
;
2895 if (config_data
[16] & 0x1)
2896 result
|= HSO_INFO_CRC_BUG
;
2901 /* called once for each interface upon device insertion */
2902 static int hso_probe(struct usb_interface
*interface
,
2903 const struct usb_device_id
*id
)
2905 int mux
, i
, if_num
, port_spec
;
2906 unsigned char port_mask
;
2907 struct hso_device
*hso_dev
= NULL
;
2908 struct hso_shared_int
*shared_int
;
2909 struct hso_device
*tmp_dev
= NULL
;
2911 if_num
= interface
->altsetting
->desc
.bInterfaceNumber
;
2913 /* Get the interface/port specification from either driver_info or from
2914 * the device itself */
2915 if (id
->driver_info
)
2916 port_spec
= ((u32
*)(id
->driver_info
))[if_num
];
2918 port_spec
= hso_get_config_data(interface
);
2920 if (interface
->cur_altsetting
->desc
.bInterfaceClass
!= 0xFF) {
2921 dev_err(&interface
->dev
, "Not our interface\n");
2924 /* Check if we need to switch to alt interfaces prior to port
2926 if (interface
->num_altsetting
> 1)
2927 usb_set_interface(interface_to_usbdev(interface
), if_num
, 1);
2928 interface
->needs_remote_wakeup
= 1;
2930 /* Allocate new hso device(s) */
2931 switch (port_spec
& HSO_INTF_MASK
) {
2933 if ((port_spec
& HSO_PORT_MASK
) == HSO_PORT_NETWORK
) {
2934 /* Create the network device */
2936 hso_dev
= hso_create_net_device(interface
);
2943 if (hso_get_mux_ports(interface
, &port_mask
))
2944 /* TODO: de-allocate everything */
2947 shared_int
= hso_create_shared_int(interface
);
2951 for (i
= 1, mux
= 0; i
< 0x100; i
= i
<< 1, mux
++) {
2952 if (port_mask
& i
) {
2953 hso_dev
= hso_create_mux_serial_device(
2954 interface
, i
, shared_int
);
2965 /* It's a regular bulk interface */
2966 if (((port_spec
& HSO_PORT_MASK
) == HSO_PORT_NETWORK
)
2968 hso_dev
= hso_create_net_device(interface
);
2971 hso_create_bulk_serial_device(interface
, port_spec
);
2979 /* save our data pointer in this device */
2980 usb_set_intfdata(interface
, hso_dev
);
2985 hso_free_interface(interface
);
2989 /* device removed, cleaning up */
2990 static void hso_disconnect(struct usb_interface
*interface
)
2992 hso_free_interface(interface
);
2994 /* remove reference of our private data */
2995 usb_set_intfdata(interface
, NULL
);
2998 static void async_get_intf(struct work_struct
*data
)
3000 struct hso_device
*hso_dev
=
3001 container_of(data
, struct hso_device
, async_get_intf
);
3002 usb_autopm_get_interface(hso_dev
->interface
);
3005 static void async_put_intf(struct work_struct
*data
)
3007 struct hso_device
*hso_dev
=
3008 container_of(data
, struct hso_device
, async_put_intf
);
3009 usb_autopm_put_interface(hso_dev
->interface
);
3012 static int hso_get_activity(struct hso_device
*hso_dev
)
3014 if (hso_dev
->usb
->state
== USB_STATE_SUSPENDED
) {
3015 if (!hso_dev
->is_active
) {
3016 hso_dev
->is_active
= 1;
3017 schedule_work(&hso_dev
->async_get_intf
);
3021 if (hso_dev
->usb
->state
!= USB_STATE_CONFIGURED
)
3024 usb_mark_last_busy(hso_dev
->usb
);
3029 static int hso_put_activity(struct hso_device
*hso_dev
)
3031 if (hso_dev
->usb
->state
!= USB_STATE_SUSPENDED
) {
3032 if (hso_dev
->is_active
) {
3033 hso_dev
->is_active
= 0;
3034 schedule_work(&hso_dev
->async_put_intf
);
3038 hso_dev
->is_active
= 0;
3042 /* called by kernel when we need to suspend device */
3043 static int hso_suspend(struct usb_interface
*iface
, pm_message_t message
)
3047 /* Stop all serial ports */
3048 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
3049 if (serial_table
[i
] && (serial_table
[i
]->interface
== iface
)) {
3050 result
= hso_stop_serial_device(serial_table
[i
]);
3056 /* Stop all network ports */
3057 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
3058 if (network_table
[i
] &&
3059 (network_table
[i
]->interface
== iface
)) {
3060 result
= hso_stop_net_device(network_table
[i
]);
3070 /* called by kernel when we need to resume device */
3071 static int hso_resume(struct usb_interface
*iface
)
3074 struct hso_net
*hso_net
;
3076 /* Start all serial ports */
3077 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
3078 if (serial_table
[i
] && (serial_table
[i
]->interface
== iface
)) {
3079 if (dev2ser(serial_table
[i
])->open_count
) {
3081 hso_start_serial_device(serial_table
[i
], GFP_NOIO
);
3082 hso_kick_transmit(dev2ser(serial_table
[i
]));
3089 /* Start all network ports */
3090 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
3091 if (network_table
[i
] &&
3092 (network_table
[i
]->interface
== iface
)) {
3093 hso_net
= dev2net(network_table
[i
]);
3094 if (hso_net
->flags
& IFF_UP
) {
3095 /* First transmit any lingering data,
3096 then restart the device. */
3097 if (hso_net
->skb_tx_buf
) {
3098 dev_dbg(&iface
->dev
,
3100 " lingering data\n");
3101 hso_net_start_xmit(hso_net
->skb_tx_buf
,
3103 hso_net
->skb_tx_buf
= NULL
;
3105 result
= hso_start_net_device(network_table
[i
]);
3116 static void hso_serial_ref_free(struct kref
*ref
)
3118 struct hso_device
*hso_dev
= container_of(ref
, struct hso_device
, ref
);
3120 hso_free_serial_device(hso_dev
);
3123 static void hso_free_interface(struct usb_interface
*interface
)
3125 struct hso_serial
*hso_dev
;
3126 struct tty_struct
*tty
;
3129 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
3131 && (serial_table
[i
]->interface
== interface
)) {
3132 hso_dev
= dev2ser(serial_table
[i
]);
3133 spin_lock_irq(&hso_dev
->serial_lock
);
3134 tty
= tty_kref_get(hso_dev
->tty
);
3135 spin_unlock_irq(&hso_dev
->serial_lock
);
3138 mutex_lock(&hso_dev
->parent
->mutex
);
3140 hso_dev
->parent
->usb_gone
= 1;
3141 mutex_unlock(&hso_dev
->parent
->mutex
);
3142 kref_put(&serial_table
[i
]->ref
, hso_serial_ref_free
);
3146 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
3147 if (network_table
[i
]
3148 && (network_table
[i
]->interface
== interface
)) {
3149 struct rfkill
*rfk
= dev2net(network_table
[i
])->rfkill
;
3150 /* hso_stop_net_device doesn't stop the net queue since
3151 * traffic needs to start it again when suspended */
3152 netif_stop_queue(dev2net(network_table
[i
])->net
);
3153 hso_stop_net_device(network_table
[i
]);
3154 cancel_work_sync(&network_table
[i
]->async_put_intf
);
3155 cancel_work_sync(&network_table
[i
]->async_get_intf
);
3157 rfkill_unregister(rfk
);
3158 hso_free_net_device(network_table
[i
]);
3163 /* Helper functions */
3165 /* Get the endpoint ! */
3166 static struct usb_endpoint_descriptor
*hso_get_ep(struct usb_interface
*intf
,
3170 struct usb_host_interface
*iface
= intf
->cur_altsetting
;
3171 struct usb_endpoint_descriptor
*endp
;
3173 for (i
= 0; i
< iface
->desc
.bNumEndpoints
; i
++) {
3174 endp
= &iface
->endpoint
[i
].desc
;
3175 if (((endp
->bEndpointAddress
& USB_ENDPOINT_DIR_MASK
) == dir
) &&
3176 (usb_endpoint_type(endp
) == type
))
3183 /* Get the byte that describes which ports are enabled */
3184 static int hso_get_mux_ports(struct usb_interface
*intf
, unsigned char *ports
)
3187 struct usb_host_interface
*iface
= intf
->cur_altsetting
;
3189 if (iface
->extralen
== 3) {
3190 *ports
= iface
->extra
[2];
3194 for (i
= 0; i
< iface
->desc
.bNumEndpoints
; i
++) {
3195 if (iface
->endpoint
[i
].extralen
== 3) {
3196 *ports
= iface
->endpoint
[i
].extra
[2];
3204 /* interrupt urb needs to be submitted, used for serial read of muxed port */
3205 static int hso_mux_submit_intr_urb(struct hso_shared_int
*shared_int
,
3206 struct usb_device
*usb
, gfp_t gfp
)
3210 usb_fill_int_urb(shared_int
->shared_intr_urb
, usb
,
3212 shared_int
->intr_endp
->bEndpointAddress
& 0x7F),
3213 shared_int
->shared_intr_buf
,
3214 shared_int
->intr_endp
->wMaxPacketSize
,
3215 intr_callback
, shared_int
,
3216 shared_int
->intr_endp
->bInterval
);
3218 result
= usb_submit_urb(shared_int
->shared_intr_urb
, gfp
);
3220 dev_warn(&usb
->dev
, "%s failed mux_intr_urb %d", __func__
,
3226 /* operations setup of the serial interface */
3227 static const struct tty_operations hso_serial_ops
= {
3228 .open
= hso_serial_open
,
3229 .close
= hso_serial_close
,
3230 .write
= hso_serial_write
,
3231 .write_room
= hso_serial_write_room
,
3232 .ioctl
= hso_serial_ioctl
,
3233 .set_termios
= hso_serial_set_termios
,
3234 .chars_in_buffer
= hso_serial_chars_in_buffer
,
3235 .tiocmget
= hso_serial_tiocmget
,
3236 .tiocmset
= hso_serial_tiocmset
,
3237 .unthrottle
= hso_unthrottle
3240 static struct usb_driver hso_driver
= {
3241 .name
= driver_name
,
3243 .disconnect
= hso_disconnect
,
3244 .id_table
= hso_ids
,
3245 .suspend
= hso_suspend
,
3246 .resume
= hso_resume
,
3247 .reset_resume
= hso_resume
,
3248 .supports_autosuspend
= 1,
3251 static int __init
hso_init(void)
3256 /* put it in the log */
3257 printk(KERN_INFO
"hso: %s\n", version
);
3259 /* Initialise the serial table semaphore and table */
3260 spin_lock_init(&serial_table_lock
);
3261 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++)
3262 serial_table
[i
] = NULL
;
3264 /* allocate our driver using the proper amount of supported minors */
3265 tty_drv
= alloc_tty_driver(HSO_SERIAL_TTY_MINORS
);
3269 /* fill in all needed values */
3270 tty_drv
->magic
= TTY_DRIVER_MAGIC
;
3271 tty_drv
->owner
= THIS_MODULE
;
3272 tty_drv
->driver_name
= driver_name
;
3273 tty_drv
->name
= tty_filename
;
3275 /* if major number is provided as parameter, use that one */
3277 tty_drv
->major
= tty_major
;
3279 tty_drv
->minor_start
= 0;
3280 tty_drv
->num
= HSO_SERIAL_TTY_MINORS
;
3281 tty_drv
->type
= TTY_DRIVER_TYPE_SERIAL
;
3282 tty_drv
->subtype
= SERIAL_TYPE_NORMAL
;
3283 tty_drv
->flags
= TTY_DRIVER_REAL_RAW
| TTY_DRIVER_DYNAMIC_DEV
;
3284 tty_drv
->init_termios
= tty_std_termios
;
3285 hso_init_termios(&tty_drv
->init_termios
);
3286 tty_set_operations(tty_drv
, &hso_serial_ops
);
3288 /* register the tty driver */
3289 result
= tty_register_driver(tty_drv
);
3291 printk(KERN_ERR
"%s - tty_register_driver failed(%d)\n",
3296 /* register this module as an usb driver */
3297 result
= usb_register(&hso_driver
);
3299 printk(KERN_ERR
"Could not register hso driver? error: %d\n",
3301 /* cleanup serial interface */
3302 tty_unregister_driver(tty_drv
);
3310 static void __exit
hso_exit(void)
3312 printk(KERN_INFO
"hso: unloaded\n");
3314 tty_unregister_driver(tty_drv
);
3315 /* deregister the usb driver */
3316 usb_deregister(&hso_driver
);
3319 /* Module definitions */
3320 module_init(hso_init
);
3321 module_exit(hso_exit
);
3323 MODULE_AUTHOR(MOD_AUTHOR
);
3324 MODULE_DESCRIPTION(MOD_DESCRIPTION
);
3325 MODULE_LICENSE(MOD_LICENSE
);
3326 MODULE_INFO(Version
, DRIVER_VERSION
);
3328 /* change the debug level (eg: insmod hso.ko debug=0x04) */
3329 MODULE_PARM_DESC(debug
, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
3330 module_param(debug
, int, S_IRUGO
| S_IWUSR
);
3332 /* set the major tty number (eg: insmod hso.ko tty_major=245) */
3333 MODULE_PARM_DESC(tty_major
, "Set the major tty number");
3334 module_param(tty_major
, int, S_IRUGO
| S_IWUSR
);
3336 /* disable network interface (eg: insmod hso.ko disable_net=1) */
3337 MODULE_PARM_DESC(disable_net
, "Disable the network interface");
3338 module_param(disable_net
, int, S_IRUGO
| S_IWUSR
);