1 /******************************************************************************
3 * Driver for Option High Speed Mobile Devices.
5 * Copyright (C) 2008 Option International
6 * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd)
7 * <ajb@spheresystems.co.uk>
8 * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
9 * Copyright (C) 2008 Novell, Inc.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
26 *****************************************************************************/
28 /******************************************************************************
30 * Description of the device:
32 * Interface 0: Contains the IP network interface on the bulk end points.
33 * The multiplexed serial ports are using the interrupt and
35 * Interrupt contains a bitmap telling which multiplexed
36 * serialport needs servicing.
38 * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the
39 * port is opened, as this have a huge impact on the network port
42 * Interface 2: Standard modem interface - circuit switched interface, should
45 *****************************************************************************/
47 #include <linux/sched.h>
48 #include <linux/slab.h>
49 #include <linux/init.h>
50 #include <linux/delay.h>
51 #include <linux/netdevice.h>
52 #include <linux/module.h>
53 #include <linux/ethtool.h>
54 #include <linux/usb.h>
55 #include <linux/timer.h>
56 #include <linux/tty.h>
57 #include <linux/tty_driver.h>
58 #include <linux/tty_flip.h>
59 #include <linux/kmod.h>
60 #include <linux/rfkill.h>
62 #include <linux/uaccess.h>
63 #include <linux/usb/cdc.h>
65 #include <asm/byteorder.h>
68 #define DRIVER_VERSION "1.2"
69 #define MOD_AUTHOR "Option Wireless"
70 #define MOD_DESCRIPTION "USB High Speed Option driver"
71 #define MOD_LICENSE "GPL"
73 #define HSO_MAX_NET_DEVICES 10
74 #define HSO__MAX_MTU 2048
75 #define DEFAULT_MTU 1500
76 #define DEFAULT_MRU 1500
78 #define CTRL_URB_RX_SIZE 1024
79 #define CTRL_URB_TX_SIZE 64
81 #define BULK_URB_RX_SIZE 4096
82 #define BULK_URB_TX_SIZE 8192
84 #define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU
85 #define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU
86 #define MUX_BULK_RX_BUF_COUNT 4
87 #define USB_TYPE_OPTION_VENDOR 0x20
89 /* These definitions are used with the struct hso_net flags element */
90 /* - use *_bit operations on it. (bit indices not values.) */
91 #define HSO_NET_RUNNING 0
93 #define HSO_NET_TX_TIMEOUT (HZ*10)
95 #define HSO_SERIAL_MAGIC 0x48534f31
97 /* Number of ttys to handle */
98 #define HSO_SERIAL_TTY_MINORS 256
100 #define MAX_RX_URBS 2
102 static inline struct hso_serial
*get_serial_by_tty(struct tty_struct
*tty
)
105 return tty
->driver_data
;
109 /*****************************************************************************/
110 /* Debugging functions */
111 /*****************************************************************************/
112 #define D__(lvl_, fmt, arg...) \
114 printk(lvl_ "[%d:%s]: " fmt "\n", \
115 __LINE__, __func__, ## arg); \
118 #define D_(lvl, args...) \
121 D__(KERN_INFO, args); \
124 #define D1(args...) D_(0x01, ##args)
125 #define D2(args...) D_(0x02, ##args)
126 #define D3(args...) D_(0x04, ##args)
127 #define D4(args...) D_(0x08, ##args)
128 #define D5(args...) D_(0x10, ##args)
130 /*****************************************************************************/
132 /*****************************************************************************/
133 enum pkt_parse_state
{
139 /*****************************************************************************/
141 /*****************************************************************************/
143 struct hso_shared_int
{
144 struct usb_endpoint_descriptor
*intr_endp
;
145 void *shared_intr_buf
;
146 struct urb
*shared_intr_urb
;
147 struct usb_device
*usb
;
150 struct mutex shared_int_lock
;
154 struct hso_device
*parent
;
155 struct net_device
*net
;
156 struct rfkill
*rfkill
;
158 struct usb_endpoint_descriptor
*in_endp
;
159 struct usb_endpoint_descriptor
*out_endp
;
161 struct urb
*mux_bulk_rx_urb_pool
[MUX_BULK_RX_BUF_COUNT
];
162 struct urb
*mux_bulk_tx_urb
;
163 void *mux_bulk_rx_buf_pool
[MUX_BULK_RX_BUF_COUNT
];
164 void *mux_bulk_tx_buf
;
166 struct sk_buff
*skb_rx_buf
;
167 struct sk_buff
*skb_tx_buf
;
169 enum pkt_parse_state rx_parse_state
;
172 unsigned short rx_buf_size
;
173 unsigned short rx_buf_missing
;
174 struct iphdr rx_ip_hdr
;
186 struct hso_device
*parent
;
190 struct hso_shared_int
*shared_int
;
192 /* rx/tx urb could be either a bulk urb or a control urb depending
193 on which serial port it is used on. */
194 struct urb
*rx_urb
[MAX_RX_URBS
];
196 u8
*rx_data
[MAX_RX_URBS
];
197 u16 rx_data_length
; /* should contain allocated length */
202 u16 tx_data_length
; /* should contain allocated length */
205 struct usb_ctrlrequest ctrl_req_tx
;
206 struct usb_ctrlrequest ctrl_req_rx
;
208 struct usb_endpoint_descriptor
*in_endp
;
209 struct usb_endpoint_descriptor
*out_endp
;
211 enum rx_ctrl_state rx_state
;
214 unsigned tx_urb_used
:1;
216 /* from usb_serial_port */
217 struct tty_struct
*tty
;
219 spinlock_t serial_lock
;
221 int (*write_data
) (struct hso_serial
*serial
);
222 /* Hacks required to get flow control
223 * working on the serial receive buffers
224 * so as not to drop characters on the floor.
227 u16 curr_rx_urb_offset
;
228 u8 rx_urb_filled
[MAX_RX_URBS
];
229 struct tasklet_struct unthrottle_tasklet
;
230 struct work_struct retry_unthrottle_workqueue
;
235 struct hso_serial
*dev_serial
;
236 struct hso_net
*dev_net
;
243 struct work_struct async_get_intf
;
244 struct work_struct async_put_intf
;
246 struct usb_device
*usb
;
247 struct usb_interface
*interface
;
254 /* Type of interface */
255 #define HSO_INTF_MASK 0xFF00
256 #define HSO_INTF_MUX 0x0100
257 #define HSO_INTF_BULK 0x0200
260 #define HSO_PORT_MASK 0xFF
261 #define HSO_PORT_NO_PORT 0x0
262 #define HSO_PORT_CONTROL 0x1
263 #define HSO_PORT_APP 0x2
264 #define HSO_PORT_GPS 0x3
265 #define HSO_PORT_PCSC 0x4
266 #define HSO_PORT_APP2 0x5
267 #define HSO_PORT_GPS_CONTROL 0x6
268 #define HSO_PORT_MSD 0x7
269 #define HSO_PORT_VOICE 0x8
270 #define HSO_PORT_DIAG2 0x9
271 #define HSO_PORT_DIAG 0x10
272 #define HSO_PORT_MODEM 0x11
273 #define HSO_PORT_NETWORK 0x12
275 /* Additional device info */
276 #define HSO_INFO_MASK 0xFF000000
277 #define HSO_INFO_CRC_BUG 0x01000000
279 /*****************************************************************************/
281 /*****************************************************************************/
282 /* Serial driver functions */
283 static int hso_serial_tiocmset(struct tty_struct
*tty
, struct file
*file
,
284 unsigned int set
, unsigned int clear
);
285 static void ctrl_callback(struct urb
*urb
);
286 static int put_rxbuf_data(struct urb
*urb
, struct hso_serial
*serial
);
287 static void hso_kick_transmit(struct hso_serial
*serial
);
288 /* Helper functions */
289 static int hso_mux_submit_intr_urb(struct hso_shared_int
*mux_int
,
290 struct usb_device
*usb
, gfp_t gfp
);
291 static void log_usb_status(int status
, const char *function
);
292 static struct usb_endpoint_descriptor
*hso_get_ep(struct usb_interface
*intf
,
294 static int hso_get_mux_ports(struct usb_interface
*intf
, unsigned char *ports
);
295 static void hso_free_interface(struct usb_interface
*intf
);
296 static int hso_start_serial_device(struct hso_device
*hso_dev
, gfp_t flags
);
297 static int hso_stop_serial_device(struct hso_device
*hso_dev
);
298 static int hso_start_net_device(struct hso_device
*hso_dev
);
299 static void hso_free_shared_int(struct hso_shared_int
*shared_int
);
300 static int hso_stop_net_device(struct hso_device
*hso_dev
);
301 static void hso_serial_ref_free(struct kref
*ref
);
302 static void hso_std_serial_read_bulk_callback(struct urb
*urb
);
303 static int hso_mux_serial_read(struct hso_serial
*serial
);
304 static void async_get_intf(struct work_struct
*data
);
305 static void async_put_intf(struct work_struct
*data
);
306 static int hso_put_activity(struct hso_device
*hso_dev
);
307 static int hso_get_activity(struct hso_device
*hso_dev
);
309 /*****************************************************************************/
310 /* Helping functions */
311 /*****************************************************************************/
315 static inline struct hso_net
*dev2net(struct hso_device
*hso_dev
)
317 return hso_dev
->port_data
.dev_net
;
320 static inline struct hso_serial
*dev2ser(struct hso_device
*hso_dev
)
322 return hso_dev
->port_data
.dev_serial
;
325 /* Debugging functions */
327 static void dbg_dump(int line_count
, const char *func_name
, unsigned char *buf
,
330 static char name
[255];
332 sprintf(name
, "hso[%d:%s]", line_count
, func_name
);
333 print_hex_dump_bytes(name
, DUMP_PREFIX_NONE
, buf
, len
);
336 #define DUMP(buf_, len_) \
337 dbg_dump(__LINE__, __func__, buf_, len_)
339 #define DUMP1(buf_, len_) \
345 #define DUMP(buf_, len_)
346 #define DUMP1(buf_, len_)
349 /* module parameters */
351 static int tty_major
;
352 static int disable_net
;
355 static const char driver_name
[] = "hso";
356 static const char tty_filename
[] = "ttyHS";
357 static const char *version
= __FILE__
": " DRIVER_VERSION
" " MOD_AUTHOR
;
358 /* the usb driver itself (registered in hso_init) */
359 static struct usb_driver hso_driver
;
360 /* serial structures */
361 static struct tty_driver
*tty_drv
;
362 static struct hso_device
*serial_table
[HSO_SERIAL_TTY_MINORS
];
363 static struct hso_device
*network_table
[HSO_MAX_NET_DEVICES
];
364 static spinlock_t serial_table_lock
;
365 static struct ktermios
*hso_serial_termios
[HSO_SERIAL_TTY_MINORS
];
366 static struct ktermios
*hso_serial_termios_locked
[HSO_SERIAL_TTY_MINORS
];
368 static const s32 default_port_spec
[] = {
369 HSO_INTF_MUX
| HSO_PORT_NETWORK
,
370 HSO_INTF_BULK
| HSO_PORT_DIAG
,
371 HSO_INTF_BULK
| HSO_PORT_MODEM
,
375 static const s32 icon321_port_spec
[] = {
376 HSO_INTF_MUX
| HSO_PORT_NETWORK
,
377 HSO_INTF_BULK
| HSO_PORT_DIAG2
,
378 HSO_INTF_BULK
| HSO_PORT_MODEM
,
379 HSO_INTF_BULK
| HSO_PORT_DIAG
,
383 #define default_port_device(vendor, product) \
384 USB_DEVICE(vendor, product), \
385 .driver_info = (kernel_ulong_t)default_port_spec
387 #define icon321_port_device(vendor, product) \
388 USB_DEVICE(vendor, product), \
389 .driver_info = (kernel_ulong_t)icon321_port_spec
391 /* list of devices we support */
392 static const struct usb_device_id hso_ids
[] = {
393 {default_port_device(0x0af0, 0x6711)},
394 {default_port_device(0x0af0, 0x6731)},
395 {default_port_device(0x0af0, 0x6751)},
396 {default_port_device(0x0af0, 0x6771)},
397 {default_port_device(0x0af0, 0x6791)},
398 {default_port_device(0x0af0, 0x6811)},
399 {default_port_device(0x0af0, 0x6911)},
400 {default_port_device(0x0af0, 0x6951)},
401 {default_port_device(0x0af0, 0x6971)},
402 {default_port_device(0x0af0, 0x7011)},
403 {default_port_device(0x0af0, 0x7031)},
404 {default_port_device(0x0af0, 0x7051)},
405 {default_port_device(0x0af0, 0x7071)},
406 {default_port_device(0x0af0, 0x7111)},
407 {default_port_device(0x0af0, 0x7211)},
408 {default_port_device(0x0af0, 0x7251)},
409 {default_port_device(0x0af0, 0x7271)},
410 {default_port_device(0x0af0, 0x7311)},
411 {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */
412 {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */
413 {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */
414 {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */
415 {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */
416 {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */
417 {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */
418 {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */
419 {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */
422 MODULE_DEVICE_TABLE(usb
, hso_ids
);
424 /* Sysfs attribute */
425 static ssize_t
hso_sysfs_show_porttype(struct device
*dev
,
426 struct device_attribute
*attr
,
429 struct hso_device
*hso_dev
= dev
->driver_data
;
435 switch (hso_dev
->port_spec
& HSO_PORT_MASK
) {
436 case HSO_PORT_CONTROL
:
437 port_name
= "Control";
440 port_name
= "Application";
443 port_name
= "Application2";
448 case HSO_PORT_GPS_CONTROL
:
449 port_name
= "GPS Control";
455 port_name
= "Diagnostic";
458 port_name
= "Diagnostic2";
463 case HSO_PORT_NETWORK
:
464 port_name
= "Network";
467 port_name
= "Unknown";
471 return sprintf(buf
, "%s\n", port_name
);
473 static DEVICE_ATTR(hsotype
, S_IRUGO
, hso_sysfs_show_porttype
, NULL
);
475 static int hso_urb_to_index(struct hso_serial
*serial
, struct urb
*urb
)
479 for (idx
= 0; idx
< serial
->num_rx_urbs
; idx
++)
480 if (serial
->rx_urb
[idx
] == urb
)
482 dev_err(serial
->parent
->dev
, "hso_urb_to_index failed\n");
486 /* converts mux value to a port spec value */
487 static u32
hso_mux_to_port(int mux
)
493 result
= HSO_PORT_CONTROL
;
496 result
= HSO_PORT_APP
;
499 result
= HSO_PORT_PCSC
;
502 result
= HSO_PORT_GPS
;
505 result
= HSO_PORT_APP2
;
508 result
= HSO_PORT_NO_PORT
;
513 /* converts port spec value to a mux value */
514 static u32
hso_port_to_mux(int port
)
518 switch (port
& HSO_PORT_MASK
) {
519 case HSO_PORT_CONTROL
:
540 static struct hso_serial
*get_serial_by_shared_int_and_type(
541 struct hso_shared_int
*shared_int
,
546 port
= hso_mux_to_port(mux
);
548 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
550 && (dev2ser(serial_table
[i
])->shared_int
== shared_int
)
551 && ((serial_table
[i
]->port_spec
& HSO_PORT_MASK
) == port
)) {
552 return dev2ser(serial_table
[i
]);
559 static struct hso_serial
*get_serial_by_index(unsigned index
)
561 struct hso_serial
*serial
= NULL
;
564 spin_lock_irqsave(&serial_table_lock
, flags
);
565 if (serial_table
[index
])
566 serial
= dev2ser(serial_table
[index
]);
567 spin_unlock_irqrestore(&serial_table_lock
, flags
);
572 static int get_free_serial_index(void)
577 spin_lock_irqsave(&serial_table_lock
, flags
);
578 for (index
= 0; index
< HSO_SERIAL_TTY_MINORS
; index
++) {
579 if (serial_table
[index
] == NULL
) {
580 spin_unlock_irqrestore(&serial_table_lock
, flags
);
584 spin_unlock_irqrestore(&serial_table_lock
, flags
);
586 printk(KERN_ERR
"%s: no free serial devices in table\n", __func__
);
590 static void set_serial_by_index(unsigned index
, struct hso_serial
*serial
)
594 spin_lock_irqsave(&serial_table_lock
, flags
);
596 serial_table
[index
] = serial
->parent
;
598 serial_table
[index
] = NULL
;
599 spin_unlock_irqrestore(&serial_table_lock
, flags
);
602 /* log a meaningful explanation of an USB status */
603 static void log_usb_status(int status
, const char *function
)
609 explanation
= "no device";
612 explanation
= "endpoint not enabled";
615 explanation
= "endpoint stalled";
618 explanation
= "not enough bandwidth";
621 explanation
= "device disabled";
624 explanation
= "device suspended";
630 explanation
= "internal error";
633 explanation
= "unknown status";
636 D1("%s: received USB status - %s (%d)", function
, explanation
, status
);
639 /* Network interface functions */
641 /* called when net interface is brought up by ifconfig */
642 static int hso_net_open(struct net_device
*net
)
644 struct hso_net
*odev
= netdev_priv(net
);
645 unsigned long flags
= 0;
648 dev_err(&net
->dev
, "No net device !\n");
652 odev
->skb_tx_buf
= NULL
;
654 /* setup environment */
655 spin_lock_irqsave(&odev
->net_lock
, flags
);
656 odev
->rx_parse_state
= WAIT_IP
;
657 odev
->rx_buf_size
= 0;
658 odev
->rx_buf_missing
= sizeof(struct iphdr
);
659 spin_unlock_irqrestore(&odev
->net_lock
, flags
);
661 hso_start_net_device(odev
->parent
);
663 /* We are up and running. */
664 set_bit(HSO_NET_RUNNING
, &odev
->flags
);
666 /* Tell the kernel we are ready to start receiving from it */
667 netif_start_queue(net
);
672 /* called when interface is brought down by ifconfig */
673 static int hso_net_close(struct net_device
*net
)
675 struct hso_net
*odev
= netdev_priv(net
);
677 /* we don't need the queue anymore */
678 netif_stop_queue(net
);
679 /* no longer running */
680 clear_bit(HSO_NET_RUNNING
, &odev
->flags
);
682 hso_stop_net_device(odev
->parent
);
688 /* USB tells is xmit done, we should start the netqueue again */
689 static void write_bulk_callback(struct urb
*urb
)
691 struct hso_net
*odev
= urb
->context
;
692 int status
= urb
->status
;
695 if (!odev
|| !test_bit(HSO_NET_RUNNING
, &odev
->flags
)) {
696 dev_err(&urb
->dev
->dev
, "%s: device not running\n", __func__
);
700 /* Do we still have a valid kernel network device? */
701 if (!netif_device_present(odev
->net
)) {
702 dev_err(&urb
->dev
->dev
, "%s: net device not present\n",
707 /* log status, but don't act on it, we don't need to resubmit anything
710 log_usb_status(status
, __func__
);
712 hso_put_activity(odev
->parent
);
714 /* Tell the network interface we are ready for another frame */
715 netif_wake_queue(odev
->net
);
718 /* called by kernel when we need to transmit a packet */
719 static int hso_net_start_xmit(struct sk_buff
*skb
, struct net_device
*net
)
721 struct hso_net
*odev
= netdev_priv(net
);
724 /* Tell the kernel, "No more frames 'til we are done with this one." */
725 netif_stop_queue(net
);
726 if (hso_get_activity(odev
->parent
) == -EAGAIN
) {
727 odev
->skb_tx_buf
= skb
;
732 DUMP1(skb
->data
, skb
->len
);
733 /* Copy it from kernel memory to OUR memory */
734 memcpy(odev
->mux_bulk_tx_buf
, skb
->data
, skb
->len
);
735 D1("len: %d/%d", skb
->len
, MUX_BULK_TX_BUF_SIZE
);
737 /* Fill in the URB for shipping it out. */
738 usb_fill_bulk_urb(odev
->mux_bulk_tx_urb
,
740 usb_sndbulkpipe(odev
->parent
->usb
,
742 bEndpointAddress
& 0x7F),
743 odev
->mux_bulk_tx_buf
, skb
->len
, write_bulk_callback
,
746 /* Deal with the Zero Length packet problem, I hope */
747 odev
->mux_bulk_tx_urb
->transfer_flags
|= URB_ZERO_PACKET
;
749 /* Send the URB on its merry way. */
750 result
= usb_submit_urb(odev
->mux_bulk_tx_urb
, GFP_ATOMIC
);
752 dev_warn(&odev
->parent
->interface
->dev
,
753 "failed mux_bulk_tx_urb %d", result
);
754 net
->stats
.tx_errors
++;
755 netif_start_queue(net
);
757 net
->stats
.tx_packets
++;
758 net
->stats
.tx_bytes
+= skb
->len
;
759 /* And tell the kernel when the last transmit started. */
760 net
->trans_start
= jiffies
;
767 static void hso_get_drvinfo(struct net_device
*net
, struct ethtool_drvinfo
*info
)
769 struct hso_net
*odev
= netdev_priv(net
);
771 strncpy(info
->driver
, driver_name
, ETHTOOL_BUSINFO_LEN
);
772 strncpy(info
->version
, DRIVER_VERSION
, ETHTOOL_BUSINFO_LEN
);
773 usb_make_path(odev
->parent
->usb
, info
->bus_info
, sizeof info
->bus_info
);
776 static struct ethtool_ops ops
= {
777 .get_drvinfo
= hso_get_drvinfo
,
778 .get_link
= ethtool_op_get_link
781 /* called when a packet did not ack after watchdogtimeout */
782 static void hso_net_tx_timeout(struct net_device
*net
)
784 struct hso_net
*odev
= netdev_priv(net
);
789 /* Tell syslog we are hosed. */
790 dev_warn(&net
->dev
, "Tx timed out.\n");
792 /* Tear the waiting frame off the list */
793 if (odev
->mux_bulk_tx_urb
794 && (odev
->mux_bulk_tx_urb
->status
== -EINPROGRESS
))
795 usb_unlink_urb(odev
->mux_bulk_tx_urb
);
797 /* Update statistics */
798 net
->stats
.tx_errors
++;
801 /* make a real packet from the received USB buffer */
802 static void packetizeRx(struct hso_net
*odev
, unsigned char *ip_pkt
,
803 unsigned int count
, unsigned char is_eop
)
805 unsigned short temp_bytes
;
806 unsigned short buffer_offset
= 0;
807 unsigned short frame_len
;
808 unsigned char *tmp_rx_buf
;
811 D1("Rx %d bytes", count
);
812 DUMP(ip_pkt
, min(128, (int)count
));
815 switch (odev
->rx_parse_state
) {
817 /* waiting for IP header. */
818 /* wanted bytes - size of ip header */
821 odev
->rx_buf_missing
) ? count
: odev
->
824 memcpy(((unsigned char *)(&odev
->rx_ip_hdr
)) +
825 odev
->rx_buf_size
, ip_pkt
+ buffer_offset
,
828 odev
->rx_buf_size
+= temp_bytes
;
829 buffer_offset
+= temp_bytes
;
830 odev
->rx_buf_missing
-= temp_bytes
;
833 if (!odev
->rx_buf_missing
) {
834 /* header is complete allocate an sk_buffer and
835 * continue to WAIT_DATA */
836 frame_len
= ntohs(odev
->rx_ip_hdr
.tot_len
);
838 if ((frame_len
> DEFAULT_MRU
) ||
839 (frame_len
< sizeof(struct iphdr
))) {
840 dev_err(&odev
->net
->dev
,
841 "Invalid frame (%d) length\n",
843 odev
->rx_parse_state
= WAIT_SYNC
;
846 /* Allocate an sk_buff */
847 odev
->skb_rx_buf
= dev_alloc_skb(frame_len
);
848 if (!odev
->skb_rx_buf
) {
849 /* We got no receive buffer. */
850 D1("could not allocate memory");
851 odev
->rx_parse_state
= WAIT_SYNC
;
854 /* Here's where it came from */
855 odev
->skb_rx_buf
->dev
= odev
->net
;
857 /* Copy what we got so far. make room for iphdr
860 skb_put(odev
->skb_rx_buf
,
861 sizeof(struct iphdr
));
862 memcpy(tmp_rx_buf
, (char *)&(odev
->rx_ip_hdr
),
863 sizeof(struct iphdr
));
866 odev
->rx_buf_size
= sizeof(struct iphdr
);
868 /* Filip actually use .tot_len */
869 odev
->rx_buf_missing
=
870 frame_len
- sizeof(struct iphdr
);
871 odev
->rx_parse_state
= WAIT_DATA
;
876 temp_bytes
= (count
< odev
->rx_buf_missing
)
877 ? count
: odev
->rx_buf_missing
;
879 /* Copy the rest of the bytes that are left in the
880 * buffer into the waiting sk_buf. */
881 /* Make room for temp_bytes after tail. */
882 tmp_rx_buf
= skb_put(odev
->skb_rx_buf
, temp_bytes
);
883 memcpy(tmp_rx_buf
, ip_pkt
+ buffer_offset
, temp_bytes
);
885 odev
->rx_buf_missing
-= temp_bytes
;
887 buffer_offset
+= temp_bytes
;
888 odev
->rx_buf_size
+= temp_bytes
;
889 if (!odev
->rx_buf_missing
) {
890 /* Packet is complete. Inject into stack. */
891 /* We have IP packet here */
892 odev
->skb_rx_buf
->protocol
=
893 __constant_htons(ETH_P_IP
);
895 odev
->skb_rx_buf
->ip_summed
=
896 CHECKSUM_UNNECESSARY
;
898 skb_reset_mac_header(odev
->skb_rx_buf
);
900 /* Ship it off to the kernel */
901 netif_rx(odev
->skb_rx_buf
);
902 /* No longer our buffer. */
903 odev
->skb_rx_buf
= NULL
;
905 /* update out statistics */
906 odev
->net
->stats
.rx_packets
++;
908 odev
->net
->stats
.rx_bytes
+= odev
->rx_buf_size
;
910 odev
->rx_buf_size
= 0;
911 odev
->rx_buf_missing
= sizeof(struct iphdr
);
912 odev
->rx_parse_state
= WAIT_IP
;
927 /* Recovery mechanism for WAIT_SYNC state. */
929 if (odev
->rx_parse_state
== WAIT_SYNC
) {
930 odev
->rx_parse_state
= WAIT_IP
;
931 odev
->rx_buf_size
= 0;
932 odev
->rx_buf_missing
= sizeof(struct iphdr
);
937 /* Moving data from usb to kernel (in interrupt state) */
938 static void read_bulk_callback(struct urb
*urb
)
940 struct hso_net
*odev
= urb
->context
;
941 struct net_device
*net
;
943 int status
= urb
->status
;
945 /* is al ok? (Filip: Who's Al ?) */
947 log_usb_status(status
, __func__
);
952 if (!odev
|| !test_bit(HSO_NET_RUNNING
, &odev
->flags
)) {
953 D1("BULK IN callback but driver is not active!");
956 usb_mark_last_busy(urb
->dev
);
960 if (!netif_device_present(net
)) {
961 /* Somebody killed our network interface... */
965 if (odev
->parent
->port_spec
& HSO_INFO_CRC_BUG
) {
967 u8 crc_check
[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
968 rest
= urb
->actual_length
% odev
->in_endp
->wMaxPacketSize
;
969 if (((rest
== 5) || (rest
== 6))
970 && !memcmp(((u8
*) urb
->transfer_buffer
) +
971 urb
->actual_length
- 4, crc_check
, 4)) {
972 urb
->actual_length
-= 4;
976 /* do we even have a packet? */
977 if (urb
->actual_length
) {
978 /* Handle the IP stream, add header and push it onto network
979 * stack if the packet is complete. */
980 spin_lock(&odev
->net_lock
);
981 packetizeRx(odev
, urb
->transfer_buffer
, urb
->actual_length
,
982 (urb
->transfer_buffer_length
>
983 urb
->actual_length
) ? 1 : 0);
984 spin_unlock(&odev
->net_lock
);
987 /* We are done with this URB, resubmit it. Prep the USB to wait for
988 * another frame. Reuse same as received. */
989 usb_fill_bulk_urb(urb
,
991 usb_rcvbulkpipe(odev
->parent
->usb
,
993 bEndpointAddress
& 0x7F),
994 urb
->transfer_buffer
, MUX_BULK_RX_BUF_SIZE
,
995 read_bulk_callback
, odev
);
997 /* Give this to the USB subsystem so it can tell us when more data
999 result
= usb_submit_urb(urb
, GFP_ATOMIC
);
1001 dev_warn(&odev
->parent
->interface
->dev
,
1002 "%s failed submit mux_bulk_rx_urb %d", __func__
,
1006 /* Serial driver functions */
1008 static void _hso_serial_set_termios(struct tty_struct
*tty
,
1009 struct ktermios
*old
)
1011 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1012 struct ktermios
*termios
;
1014 if ((!tty
) || (!tty
->termios
) || (!serial
)) {
1015 printk(KERN_ERR
"%s: no tty structures", __func__
);
1019 D4("port %d", serial
->minor
);
1022 * The default requirements for this device are:
1024 termios
= tty
->termios
;
1026 ~(IGNBRK
/* disable ignore break */
1027 | BRKINT
/* disable break causes interrupt */
1028 | PARMRK
/* disable mark parity errors */
1029 | ISTRIP
/* disable clear high bit of input characters */
1030 | INLCR
/* disable translate NL to CR */
1031 | IGNCR
/* disable ignore CR */
1032 | ICRNL
/* disable translate CR to NL */
1033 | IXON
); /* disable enable XON/XOFF flow control */
1035 /* disable postprocess output characters */
1036 termios
->c_oflag
&= ~OPOST
;
1039 ~(ECHO
/* disable echo input characters */
1040 | ECHONL
/* disable echo new line */
1041 | ICANON
/* disable erase, kill, werase, and rprnt
1042 special characters */
1043 | ISIG
/* disable interrupt, quit, and suspend special
1045 | IEXTEN
); /* disable non-POSIX special characters */
1048 ~(CSIZE
/* no size */
1049 | PARENB
/* disable parity bit */
1050 | CBAUD
/* clear current baud rate */
1051 | CBAUDEX
); /* clear current buad rate */
1053 termios
->c_cflag
|= CS8
; /* character size 8 bits */
1055 /* baud rate 115200 */
1056 tty_encode_baud_rate(serial
->tty
, 115200, 115200);
1059 * Force low_latency on; otherwise the pushes are scheduled;
1060 * this is bad as it opens up the possibility of dropping bytes
1061 * on the floor. We don't want to drop bytes on the floor. :)
1063 serial
->tty
->low_latency
= 1;
1067 static void hso_resubmit_rx_bulk_urb(struct hso_serial
*serial
, struct urb
*urb
)
1070 #ifdef CONFIG_HSO_AUTOPM
1071 usb_mark_last_busy(urb
->dev
);
1073 /* We are done with this URB, resubmit it. Prep the USB to wait for
1075 usb_fill_bulk_urb(urb
, serial
->parent
->usb
,
1076 usb_rcvbulkpipe(serial
->parent
->usb
,
1078 bEndpointAddress
& 0x7F),
1079 urb
->transfer_buffer
, serial
->rx_data_length
,
1080 hso_std_serial_read_bulk_callback
, serial
);
1081 /* Give this to the USB subsystem so it can tell us when more data
1083 result
= usb_submit_urb(urb
, GFP_ATOMIC
);
1085 dev_err(&urb
->dev
->dev
, "%s failed submit serial rx_urb %d\n",
1093 static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial
*serial
)
1096 struct urb
*curr_urb
;
1098 while (serial
->rx_urb_filled
[serial
->curr_rx_urb_idx
]) {
1099 curr_urb
= serial
->rx_urb
[serial
->curr_rx_urb_idx
];
1100 count
= put_rxbuf_data(curr_urb
, serial
);
1104 serial
->curr_rx_urb_idx
++;
1105 if (serial
->curr_rx_urb_idx
>= serial
->num_rx_urbs
)
1106 serial
->curr_rx_urb_idx
= 0;
1107 hso_resubmit_rx_bulk_urb(serial
, curr_urb
);
1112 static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial
*serial
)
1117 urb
= serial
->rx_urb
[0];
1118 if (serial
->open_count
> 0) {
1119 count
= put_rxbuf_data(urb
, serial
);
1123 /* Re issue a read as long as we receive data. */
1125 if (count
== 0 && ((urb
->actual_length
!= 0) ||
1126 (serial
->rx_state
== RX_PENDING
))) {
1127 serial
->rx_state
= RX_SENT
;
1128 hso_mux_serial_read(serial
);
1130 serial
->rx_state
= RX_IDLE
;
1134 /* read callback for Diag and CS port */
1135 static void hso_std_serial_read_bulk_callback(struct urb
*urb
)
1137 struct hso_serial
*serial
= urb
->context
;
1138 int status
= urb
->status
;
1142 D1("serial == NULL");
1144 } else if (status
) {
1145 log_usb_status(status
, __func__
);
1149 D4("\n--- Got serial_read_bulk callback %02x ---", status
);
1150 D1("Actual length = %d\n", urb
->actual_length
);
1151 DUMP1(urb
->transfer_buffer
, urb
->actual_length
);
1153 /* Anyone listening? */
1154 if (serial
->open_count
== 0)
1158 if (serial
->parent
->port_spec
& HSO_INFO_CRC_BUG
) {
1160 u8 crc_check
[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1162 urb
->actual_length
%
1163 serial
->in_endp
->wMaxPacketSize
;
1164 if (((rest
== 5) || (rest
== 6))
1165 && !memcmp(((u8
*) urb
->transfer_buffer
) +
1166 urb
->actual_length
- 4, crc_check
, 4)) {
1167 urb
->actual_length
-= 4;
1170 /* Valid data, handle RX data */
1171 spin_lock(&serial
->serial_lock
);
1172 serial
->rx_urb_filled
[hso_urb_to_index(serial
, urb
)] = 1;
1173 put_rxbuf_data_and_resubmit_bulk_urb(serial
);
1174 spin_unlock(&serial
->serial_lock
);
1175 } else if (status
== -ENOENT
|| status
== -ECONNRESET
) {
1176 /* Unlinked - check for throttled port. */
1177 D2("Port %d, successfully unlinked urb", serial
->minor
);
1178 spin_lock(&serial
->serial_lock
);
1179 serial
->rx_urb_filled
[hso_urb_to_index(serial
, urb
)] = 0;
1180 hso_resubmit_rx_bulk_urb(serial
, urb
);
1181 spin_unlock(&serial
->serial_lock
);
1183 D2("Port %d, status = %d for read urb", serial
->minor
, status
);
1189 * This needs to be a tasklet otherwise we will
1190 * end up recursively calling this function.
1192 void hso_unthrottle_tasklet(struct hso_serial
*serial
)
1194 unsigned long flags
;
1196 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1197 if ((serial
->parent
->port_spec
& HSO_INTF_MUX
))
1198 put_rxbuf_data_and_resubmit_ctrl_urb(serial
);
1200 put_rxbuf_data_and_resubmit_bulk_urb(serial
);
1201 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1204 static void hso_unthrottle(struct tty_struct
*tty
)
1206 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1208 tasklet_hi_schedule(&serial
->unthrottle_tasklet
);
1211 void hso_unthrottle_workfunc(struct work_struct
*work
)
1213 struct hso_serial
*serial
=
1214 container_of(work
, struct hso_serial
,
1215 retry_unthrottle_workqueue
);
1216 hso_unthrottle_tasklet(serial
);
1219 /* open the requested serial port */
1220 static int hso_serial_open(struct tty_struct
*tty
, struct file
*filp
)
1222 struct hso_serial
*serial
= get_serial_by_index(tty
->index
);
1226 if (serial
== NULL
|| serial
->magic
!= HSO_SERIAL_MAGIC
) {
1227 tty
->driver_data
= NULL
;
1228 D1("Failed to open port");
1232 mutex_lock(&serial
->parent
->mutex
);
1233 result
= usb_autopm_get_interface(serial
->parent
->interface
);
1237 D1("Opening %d", serial
->minor
);
1238 kref_get(&serial
->parent
->ref
);
1241 tty
->driver_data
= serial
;
1244 /* check for port already opened, if not set the termios */
1245 serial
->open_count
++;
1246 if (serial
->open_count
== 1) {
1247 tty
->low_latency
= 1;
1248 serial
->rx_state
= RX_IDLE
;
1249 /* Force default termio settings */
1250 _hso_serial_set_termios(tty
, NULL
);
1251 tasklet_init(&serial
->unthrottle_tasklet
,
1252 (void (*)(unsigned long))hso_unthrottle_tasklet
,
1253 (unsigned long)serial
);
1254 INIT_WORK(&serial
->retry_unthrottle_workqueue
,
1255 hso_unthrottle_workfunc
);
1256 result
= hso_start_serial_device(serial
->parent
, GFP_KERNEL
);
1258 hso_stop_serial_device(serial
->parent
);
1259 serial
->open_count
--;
1260 kref_put(&serial
->parent
->ref
, hso_serial_ref_free
);
1263 D1("Port was already open");
1266 usb_autopm_put_interface(serial
->parent
->interface
);
1270 hso_serial_tiocmset(tty
, NULL
, TIOCM_RTS
| TIOCM_DTR
, 0);
1272 mutex_unlock(&serial
->parent
->mutex
);
1276 /* close the requested serial port */
1277 static void hso_serial_close(struct tty_struct
*tty
, struct file
*filp
)
1279 struct hso_serial
*serial
= tty
->driver_data
;
1282 D1("Closing serial port");
1284 mutex_lock(&serial
->parent
->mutex
);
1285 usb_gone
= serial
->parent
->usb_gone
;
1288 usb_autopm_get_interface(serial
->parent
->interface
);
1290 /* reset the rts and dtr */
1291 /* do the actual close */
1292 serial
->open_count
--;
1293 kref_put(&serial
->parent
->ref
, hso_serial_ref_free
);
1294 if (serial
->open_count
<= 0) {
1295 serial
->open_count
= 0;
1297 serial
->tty
->driver_data
= NULL
;
1301 hso_stop_serial_device(serial
->parent
);
1302 tasklet_kill(&serial
->unthrottle_tasklet
);
1303 cancel_work_sync(&serial
->retry_unthrottle_workqueue
);
1307 usb_autopm_put_interface(serial
->parent
->interface
);
1309 mutex_unlock(&serial
->parent
->mutex
);
1312 /* close the requested serial port */
1313 static int hso_serial_write(struct tty_struct
*tty
, const unsigned char *buf
,
1316 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1317 int space
, tx_bytes
;
1318 unsigned long flags
;
1321 if (serial
== NULL
) {
1322 printk(KERN_ERR
"%s: serial is NULL\n", __func__
);
1326 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1328 space
= serial
->tx_data_length
- serial
->tx_buffer_count
;
1329 tx_bytes
= (count
< space
) ? count
: space
;
1334 memcpy(serial
->tx_buffer
+ serial
->tx_buffer_count
, buf
, tx_bytes
);
1335 serial
->tx_buffer_count
+= tx_bytes
;
1338 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1340 hso_kick_transmit(serial
);
1345 /* how much room is there for writing */
1346 static int hso_serial_write_room(struct tty_struct
*tty
)
1348 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1350 unsigned long flags
;
1352 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1353 room
= serial
->tx_data_length
- serial
->tx_buffer_count
;
1354 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1356 /* return free room */
1360 /* setup the term */
1361 static void hso_serial_set_termios(struct tty_struct
*tty
, struct ktermios
*old
)
1363 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1364 unsigned long flags
;
1367 D5("Termios called with: cflags new[%d] - old[%d]",
1368 tty
->termios
->c_cflag
, old
->c_cflag
);
1370 /* the actual setup */
1371 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1372 if (serial
->open_count
)
1373 _hso_serial_set_termios(tty
, old
);
1376 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1382 /* how many characters in the buffer */
1383 static int hso_serial_chars_in_buffer(struct tty_struct
*tty
)
1385 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1387 unsigned long flags
;
1393 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1394 chars
= serial
->tx_buffer_count
;
1395 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1400 static int hso_serial_tiocmget(struct tty_struct
*tty
, struct file
*file
)
1403 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1404 unsigned long flags
;
1408 D1("no tty structures");
1412 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1413 value
= ((serial
->rts_state
) ? TIOCM_RTS
: 0) |
1414 ((serial
->dtr_state
) ? TIOCM_DTR
: 0);
1415 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1420 static int hso_serial_tiocmset(struct tty_struct
*tty
, struct file
*file
,
1421 unsigned int set
, unsigned int clear
)
1424 unsigned long flags
;
1426 struct hso_serial
*serial
= get_serial_by_tty(tty
);
1430 D1("no tty structures");
1433 if_num
= serial
->parent
->interface
->altsetting
->desc
.bInterfaceNumber
;
1435 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1436 if (set
& TIOCM_RTS
)
1437 serial
->rts_state
= 1;
1438 if (set
& TIOCM_DTR
)
1439 serial
->dtr_state
= 1;
1441 if (clear
& TIOCM_RTS
)
1442 serial
->rts_state
= 0;
1443 if (clear
& TIOCM_DTR
)
1444 serial
->dtr_state
= 0;
1446 if (serial
->dtr_state
)
1448 if (serial
->rts_state
)
1451 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1453 return usb_control_msg(serial
->parent
->usb
,
1454 usb_rcvctrlpipe(serial
->parent
->usb
, 0), 0x22,
1455 0x21, val
, if_num
, NULL
, 0,
1456 USB_CTRL_SET_TIMEOUT
);
1459 /* starts a transmit */
1460 static void hso_kick_transmit(struct hso_serial
*serial
)
1463 unsigned long flags
;
1466 spin_lock_irqsave(&serial
->serial_lock
, flags
);
1467 if (!serial
->tx_buffer_count
)
1470 if (serial
->tx_urb_used
)
1473 /* Wakeup USB interface if necessary */
1474 if (hso_get_activity(serial
->parent
) == -EAGAIN
)
1477 /* Switch pointers around to avoid memcpy */
1478 temp
= serial
->tx_buffer
;
1479 serial
->tx_buffer
= serial
->tx_data
;
1480 serial
->tx_data
= temp
;
1481 serial
->tx_data_count
= serial
->tx_buffer_count
;
1482 serial
->tx_buffer_count
= 0;
1484 /* If temp is set, it means we switched buffers */
1485 if (temp
&& serial
->write_data
) {
1486 res
= serial
->write_data(serial
);
1488 serial
->tx_urb_used
= 1;
1491 spin_unlock_irqrestore(&serial
->serial_lock
, flags
);
1494 /* make a request (for reading and writing data to muxed serial port) */
1495 static int mux_device_request(struct hso_serial
*serial
, u8 type
, u16 port
,
1496 struct urb
*ctrl_urb
,
1497 struct usb_ctrlrequest
*ctrl_req
,
1498 u8
*ctrl_urb_data
, u32 size
)
1504 if (!serial
|| !ctrl_urb
|| !ctrl_req
) {
1505 printk(KERN_ERR
"%s: Wrong arguments\n", __func__
);
1510 ctrl_req
->wValue
= 0;
1511 ctrl_req
->wIndex
= hso_port_to_mux(port
);
1512 ctrl_req
->wLength
= size
;
1514 if (type
== USB_CDC_GET_ENCAPSULATED_RESPONSE
) {
1515 /* Reading command */
1516 ctrl_req
->bRequestType
= USB_DIR_IN
|
1517 USB_TYPE_OPTION_VENDOR
|
1518 USB_RECIP_INTERFACE
;
1519 ctrl_req
->bRequest
= USB_CDC_GET_ENCAPSULATED_RESPONSE
;
1520 pipe
= usb_rcvctrlpipe(serial
->parent
->usb
, 0);
1522 /* Writing command */
1523 ctrl_req
->bRequestType
= USB_DIR_OUT
|
1524 USB_TYPE_OPTION_VENDOR
|
1525 USB_RECIP_INTERFACE
;
1526 ctrl_req
->bRequest
= USB_CDC_SEND_ENCAPSULATED_COMMAND
;
1527 pipe
= usb_sndctrlpipe(serial
->parent
->usb
, 0);
1530 D2("%s command (%02x) len: %d, port: %d",
1531 type
== USB_CDC_GET_ENCAPSULATED_RESPONSE
? "Read" : "Write",
1532 ctrl_req
->bRequestType
, ctrl_req
->wLength
, port
);
1535 ctrl_urb
->transfer_flags
= 0;
1536 usb_fill_control_urb(ctrl_urb
,
1537 serial
->parent
->usb
,
1540 ctrl_urb_data
, size
, ctrl_callback
, serial
);
1541 /* Send it on merry way */
1542 result
= usb_submit_urb(ctrl_urb
, GFP_ATOMIC
);
1544 dev_err(&ctrl_urb
->dev
->dev
,
1545 "%s failed submit ctrl_urb %d type %d", __func__
,
1554 /* called by intr_callback when read occurs */
1555 static int hso_mux_serial_read(struct hso_serial
*serial
)
1561 memset(serial
->rx_data
[0], 0, CTRL_URB_RX_SIZE
);
1562 /* make the request */
1564 if (serial
->num_rx_urbs
!= 1) {
1565 dev_err(&serial
->parent
->interface
->dev
,
1566 "ERROR: mux'd reads with multiple buffers "
1570 return mux_device_request(serial
,
1571 USB_CDC_GET_ENCAPSULATED_RESPONSE
,
1572 serial
->parent
->port_spec
& HSO_PORT_MASK
,
1574 &serial
->ctrl_req_rx
,
1575 serial
->rx_data
[0], serial
->rx_data_length
);
1578 /* used for muxed serial port callback (muxed serial read) */
1579 static void intr_callback(struct urb
*urb
)
1581 struct hso_shared_int
*shared_int
= urb
->context
;
1582 struct hso_serial
*serial
;
1583 unsigned char *port_req
;
1584 int status
= urb
->status
;
1587 usb_mark_last_busy(urb
->dev
);
1595 log_usb_status(status
, __func__
);
1598 D4("\n--- Got intr callback 0x%02X ---", status
);
1601 port_req
= urb
->transfer_buffer
;
1602 D4(" port_req = 0x%.2X\n", *port_req
);
1603 /* loop over all muxed ports to find the one sending this */
1604 for (i
= 0; i
< 8; i
++) {
1605 /* max 8 channels on MUX */
1606 if (*port_req
& (1 << i
)) {
1607 serial
= get_serial_by_shared_int_and_type(shared_int
,
1609 if (serial
!= NULL
) {
1610 D1("Pending read interrupt on port %d\n", i
);
1611 spin_lock(&serial
->serial_lock
);
1612 if (serial
->rx_state
== RX_IDLE
) {
1613 /* Setup and send a ctrl req read on
1615 if (!serial
->rx_urb_filled
[0]) {
1616 serial
->rx_state
= RX_SENT
;
1617 hso_mux_serial_read(serial
);
1619 serial
->rx_state
= RX_PENDING
;
1622 D1("Already pending a read on "
1625 spin_unlock(&serial
->serial_lock
);
1629 /* Resubmit interrupt urb */
1630 hso_mux_submit_intr_urb(shared_int
, urb
->dev
, GFP_ATOMIC
);
1633 /* called for writing to muxed serial port */
1634 static int hso_mux_serial_write_data(struct hso_serial
*serial
)
1639 return mux_device_request(serial
,
1640 USB_CDC_SEND_ENCAPSULATED_COMMAND
,
1641 serial
->parent
->port_spec
& HSO_PORT_MASK
,
1643 &serial
->ctrl_req_tx
,
1644 serial
->tx_data
, serial
->tx_data_count
);
1647 /* write callback for Diag and CS port */
1648 static void hso_std_serial_write_bulk_callback(struct urb
*urb
)
1650 struct hso_serial
*serial
= urb
->context
;
1651 int status
= urb
->status
;
1655 D1("serial == NULL");
1659 spin_lock(&serial
->serial_lock
);
1660 serial
->tx_urb_used
= 0;
1661 spin_unlock(&serial
->serial_lock
);
1663 log_usb_status(status
, __func__
);
1666 hso_put_activity(serial
->parent
);
1668 tty_wakeup(serial
->tty
);
1669 hso_kick_transmit(serial
);
1675 /* called for writing diag or CS serial port */
1676 static int hso_std_serial_write_data(struct hso_serial
*serial
)
1678 int count
= serial
->tx_data_count
;
1681 usb_fill_bulk_urb(serial
->tx_urb
,
1682 serial
->parent
->usb
,
1683 usb_sndbulkpipe(serial
->parent
->usb
,
1685 bEndpointAddress
& 0x7F),
1686 serial
->tx_data
, serial
->tx_data_count
,
1687 hso_std_serial_write_bulk_callback
, serial
);
1689 result
= usb_submit_urb(serial
->tx_urb
, GFP_ATOMIC
);
1691 dev_warn(&serial
->parent
->usb
->dev
,
1692 "Failed to submit urb - res %d\n", result
);
1699 /* callback after read or write on muxed serial port */
1700 static void ctrl_callback(struct urb
*urb
)
1702 struct hso_serial
*serial
= urb
->context
;
1703 struct usb_ctrlrequest
*req
;
1704 int status
= urb
->status
;
1710 spin_lock(&serial
->serial_lock
);
1711 serial
->tx_urb_used
= 0;
1712 spin_unlock(&serial
->serial_lock
);
1714 log_usb_status(status
, __func__
);
1719 req
= (struct usb_ctrlrequest
*)(urb
->setup_packet
);
1720 D4("\n--- Got muxed ctrl callback 0x%02X ---", status
);
1721 D4("Actual length of urb = %d\n", urb
->actual_length
);
1722 DUMP1(urb
->transfer_buffer
, urb
->actual_length
);
1724 if (req
->bRequestType
==
1725 (USB_DIR_IN
| USB_TYPE_OPTION_VENDOR
| USB_RECIP_INTERFACE
)) {
1726 /* response to a read command */
1727 serial
->rx_urb_filled
[0] = 1;
1728 spin_lock(&serial
->serial_lock
);
1729 put_rxbuf_data_and_resubmit_ctrl_urb(serial
);
1730 spin_unlock(&serial
->serial_lock
);
1732 hso_put_activity(serial
->parent
);
1734 tty_wakeup(serial
->tty
);
1735 /* response to a write command */
1736 hso_kick_transmit(serial
);
1740 /* handle RX data for serial port */
1741 static int put_rxbuf_data(struct urb
*urb
, struct hso_serial
*serial
)
1743 struct tty_struct
*tty
= serial
->tty
;
1744 int write_length_remaining
= 0;
1747 if (urb
== NULL
|| serial
== NULL
) {
1748 D1("serial = NULL");
1752 /* Push data to tty */
1754 write_length_remaining
= urb
->actual_length
-
1755 serial
->curr_rx_urb_offset
;
1756 D1("data to push to tty");
1757 while (write_length_remaining
) {
1758 if (test_bit(TTY_THROTTLED
, &tty
->flags
))
1760 curr_write_len
= tty_insert_flip_string
1761 (tty
, urb
->transfer_buffer
+
1762 serial
->curr_rx_urb_offset
,
1763 write_length_remaining
);
1764 serial
->curr_rx_urb_offset
+= curr_write_len
;
1765 write_length_remaining
-= curr_write_len
;
1766 tty_flip_buffer_push(tty
);
1769 if (write_length_remaining
== 0) {
1770 serial
->curr_rx_urb_offset
= 0;
1771 serial
->rx_urb_filled
[hso_urb_to_index(serial
, urb
)] = 0;
1773 return write_length_remaining
;
1777 /* Base driver functions */
1779 static void hso_log_port(struct hso_device
*hso_dev
)
1784 switch (hso_dev
->port_spec
& HSO_PORT_MASK
) {
1785 case HSO_PORT_CONTROL
:
1786 port_type
= "Control";
1789 port_type
= "Application";
1794 case HSO_PORT_GPS_CONTROL
:
1795 port_type
= "GPS control";
1798 port_type
= "Application2";
1804 port_type
= "Diagnostic";
1806 case HSO_PORT_DIAG2
:
1807 port_type
= "Diagnostic2";
1809 case HSO_PORT_MODEM
:
1810 port_type
= "Modem";
1812 case HSO_PORT_NETWORK
:
1813 port_type
= "Network";
1816 port_type
= "Unknown";
1819 if ((hso_dev
->port_spec
& HSO_PORT_MASK
) == HSO_PORT_NETWORK
) {
1820 sprintf(port_dev
, "%s", dev2net(hso_dev
)->net
->name
);
1822 sprintf(port_dev
, "/dev/%s%d", tty_filename
,
1823 dev2ser(hso_dev
)->minor
);
1825 dev_dbg(&hso_dev
->interface
->dev
, "HSO: Found %s port %s\n",
1826 port_type
, port_dev
);
1829 static int hso_start_net_device(struct hso_device
*hso_dev
)
1832 struct hso_net
*hso_net
= dev2net(hso_dev
);
1837 /* send URBs for all read buffers */
1838 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
1840 /* Prep a receive URB */
1841 usb_fill_bulk_urb(hso_net
->mux_bulk_rx_urb_pool
[i
],
1843 usb_rcvbulkpipe(hso_dev
->usb
,
1845 bEndpointAddress
& 0x7F),
1846 hso_net
->mux_bulk_rx_buf_pool
[i
],
1847 MUX_BULK_RX_BUF_SIZE
, read_bulk_callback
,
1850 /* Put it out there so the device can send us stuff */
1851 result
= usb_submit_urb(hso_net
->mux_bulk_rx_urb_pool
[i
],
1854 dev_warn(&hso_dev
->usb
->dev
,
1855 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__
,
1862 static int hso_stop_net_device(struct hso_device
*hso_dev
)
1865 struct hso_net
*hso_net
= dev2net(hso_dev
);
1870 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
1871 if (hso_net
->mux_bulk_rx_urb_pool
[i
])
1872 usb_kill_urb(hso_net
->mux_bulk_rx_urb_pool
[i
]);
1875 if (hso_net
->mux_bulk_tx_urb
)
1876 usb_kill_urb(hso_net
->mux_bulk_tx_urb
);
1881 static int hso_start_serial_device(struct hso_device
*hso_dev
, gfp_t flags
)
1884 struct hso_serial
*serial
= dev2ser(hso_dev
);
1889 /* If it is not the MUX port fill in and submit a bulk urb (already
1890 * allocated in hso_serial_start) */
1891 if (!(serial
->parent
->port_spec
& HSO_INTF_MUX
)) {
1892 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
1893 usb_fill_bulk_urb(serial
->rx_urb
[i
],
1894 serial
->parent
->usb
,
1895 usb_rcvbulkpipe(serial
->parent
->usb
,
1900 serial
->rx_data_length
,
1901 hso_std_serial_read_bulk_callback
,
1903 result
= usb_submit_urb(serial
->rx_urb
[i
], flags
);
1905 dev_warn(&serial
->parent
->usb
->dev
,
1906 "Failed to submit urb - res %d\n",
1912 mutex_lock(&serial
->shared_int
->shared_int_lock
);
1913 if (!serial
->shared_int
->use_count
) {
1915 hso_mux_submit_intr_urb(serial
->shared_int
,
1916 hso_dev
->usb
, flags
);
1918 serial
->shared_int
->use_count
++;
1919 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
1925 static int hso_stop_serial_device(struct hso_device
*hso_dev
)
1928 struct hso_serial
*serial
= dev2ser(hso_dev
);
1933 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
1934 if (serial
->rx_urb
[i
]) {
1935 usb_kill_urb(serial
->rx_urb
[i
]);
1936 serial
->rx_urb_filled
[i
] = 0;
1939 serial
->curr_rx_urb_idx
= 0;
1940 serial
->curr_rx_urb_offset
= 0;
1943 usb_kill_urb(serial
->tx_urb
);
1945 if (serial
->shared_int
) {
1946 mutex_lock(&serial
->shared_int
->shared_int_lock
);
1947 if (serial
->shared_int
->use_count
&&
1948 (--serial
->shared_int
->use_count
== 0)) {
1951 urb
= serial
->shared_int
->shared_intr_urb
;
1955 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
1961 static void hso_serial_common_free(struct hso_serial
*serial
)
1965 if (serial
->parent
->dev
)
1966 device_remove_file(serial
->parent
->dev
, &dev_attr_hsotype
);
1968 tty_unregister_device(tty_drv
, serial
->minor
);
1970 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
1971 /* unlink and free RX URB */
1972 usb_free_urb(serial
->rx_urb
[i
]);
1973 /* free the RX buffer */
1974 kfree(serial
->rx_data
[i
]);
1977 /* unlink and free TX URB */
1978 usb_free_urb(serial
->tx_urb
);
1979 kfree(serial
->tx_data
);
1982 static int hso_serial_common_create(struct hso_serial
*serial
, int num_urbs
,
1983 int rx_size
, int tx_size
)
1989 minor
= get_free_serial_index();
1993 /* register our minor number */
1994 serial
->parent
->dev
= tty_register_device(tty_drv
, minor
,
1995 &serial
->parent
->interface
->dev
);
1996 dev
= serial
->parent
->dev
;
1997 dev
->driver_data
= serial
->parent
;
1998 i
= device_create_file(dev
, &dev_attr_hsotype
);
2000 /* fill in specific data for later use */
2001 serial
->minor
= minor
;
2002 serial
->magic
= HSO_SERIAL_MAGIC
;
2003 spin_lock_init(&serial
->serial_lock
);
2004 serial
->num_rx_urbs
= num_urbs
;
2006 /* RX, allocate urb and initialize */
2008 /* prepare our RX buffer */
2009 serial
->rx_data_length
= rx_size
;
2010 for (i
= 0; i
< serial
->num_rx_urbs
; i
++) {
2011 serial
->rx_urb
[i
] = usb_alloc_urb(0, GFP_KERNEL
);
2012 if (!serial
->rx_urb
[i
]) {
2013 dev_err(dev
, "Could not allocate urb?\n");
2016 serial
->rx_urb
[i
]->transfer_buffer
= NULL
;
2017 serial
->rx_urb
[i
]->transfer_buffer_length
= 0;
2018 serial
->rx_data
[i
] = kzalloc(serial
->rx_data_length
,
2020 if (!serial
->rx_data
[i
]) {
2021 dev_err(dev
, "%s - Out of memory\n", __func__
);
2026 /* TX, allocate urb and initialize */
2027 serial
->tx_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2028 if (!serial
->tx_urb
) {
2029 dev_err(dev
, "Could not allocate urb?\n");
2032 serial
->tx_urb
->transfer_buffer
= NULL
;
2033 serial
->tx_urb
->transfer_buffer_length
= 0;
2034 /* prepare our TX buffer */
2035 serial
->tx_data_count
= 0;
2036 serial
->tx_buffer_count
= 0;
2037 serial
->tx_data_length
= tx_size
;
2038 serial
->tx_data
= kzalloc(serial
->tx_data_length
, GFP_KERNEL
);
2039 if (!serial
->tx_data
) {
2040 dev_err(dev
, "%s - Out of memory", __func__
);
2043 serial
->tx_buffer
= kzalloc(serial
->tx_data_length
, GFP_KERNEL
);
2044 if (!serial
->tx_buffer
) {
2045 dev_err(dev
, "%s - Out of memory", __func__
);
2051 hso_serial_common_free(serial
);
2055 /* Frees a general hso device */
2056 static void hso_free_device(struct hso_device
*hso_dev
)
2061 /* Creates a general hso device */
2062 static struct hso_device
*hso_create_device(struct usb_interface
*intf
,
2065 struct hso_device
*hso_dev
;
2067 hso_dev
= kzalloc(sizeof(*hso_dev
), GFP_ATOMIC
);
2071 hso_dev
->port_spec
= port_spec
;
2072 hso_dev
->usb
= interface_to_usbdev(intf
);
2073 hso_dev
->interface
= intf
;
2074 kref_init(&hso_dev
->ref
);
2075 mutex_init(&hso_dev
->mutex
);
2077 INIT_WORK(&hso_dev
->async_get_intf
, async_get_intf
);
2078 INIT_WORK(&hso_dev
->async_put_intf
, async_put_intf
);
2083 /* Removes a network device in the network device table */
2084 static int remove_net_device(struct hso_device
*hso_dev
)
2088 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
2089 if (network_table
[i
] == hso_dev
) {
2090 network_table
[i
] = NULL
;
2094 if (i
== HSO_MAX_NET_DEVICES
)
2099 /* Frees our network device */
2100 static void hso_free_net_device(struct hso_device
*hso_dev
)
2103 struct hso_net
*hso_net
= dev2net(hso_dev
);
2109 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
2110 usb_free_urb(hso_net
->mux_bulk_rx_urb_pool
[i
]);
2111 kfree(hso_net
->mux_bulk_rx_buf_pool
[i
]);
2113 usb_free_urb(hso_net
->mux_bulk_tx_urb
);
2114 kfree(hso_net
->mux_bulk_tx_buf
);
2116 remove_net_device(hso_net
->parent
);
2119 unregister_netdev(hso_net
->net
);
2120 free_netdev(hso_net
->net
);
2123 hso_free_device(hso_dev
);
2126 /* initialize the network interface */
2127 static void hso_net_init(struct net_device
*net
)
2129 struct hso_net
*hso_net
= netdev_priv(net
);
2131 D1("sizeof hso_net is %d", (int)sizeof(*hso_net
));
2133 /* fill in the other fields */
2134 net
->open
= hso_net_open
;
2135 net
->stop
= hso_net_close
;
2136 net
->hard_start_xmit
= hso_net_start_xmit
;
2137 net
->tx_timeout
= hso_net_tx_timeout
;
2138 net
->watchdog_timeo
= HSO_NET_TX_TIMEOUT
;
2139 net
->flags
= IFF_POINTOPOINT
| IFF_NOARP
| IFF_MULTICAST
;
2140 net
->type
= ARPHRD_NONE
;
2141 net
->mtu
= DEFAULT_MTU
- 14;
2142 net
->tx_queue_len
= 10;
2143 SET_ETHTOOL_OPS(net
, &ops
);
2145 /* and initialize the semaphore */
2146 spin_lock_init(&hso_net
->net_lock
);
2149 /* Adds a network device in the network device table */
2150 static int add_net_device(struct hso_device
*hso_dev
)
2154 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
2155 if (network_table
[i
] == NULL
) {
2156 network_table
[i
] = hso_dev
;
2160 if (i
== HSO_MAX_NET_DEVICES
)
2165 static int hso_radio_toggle(void *data
, enum rfkill_state state
)
2167 struct hso_device
*hso_dev
= data
;
2168 int enabled
= (state
== RFKILL_STATE_ON
);
2171 mutex_lock(&hso_dev
->mutex
);
2172 if (hso_dev
->usb_gone
)
2175 rv
= usb_control_msg(hso_dev
->usb
, usb_rcvctrlpipe(hso_dev
->usb
, 0),
2176 enabled
? 0x82 : 0x81, 0x40, 0, 0, NULL
, 0,
2177 USB_CTRL_SET_TIMEOUT
);
2178 mutex_unlock(&hso_dev
->mutex
);
2182 /* Creates and sets up everything for rfkill */
2183 static void hso_create_rfkill(struct hso_device
*hso_dev
,
2184 struct usb_interface
*interface
)
2186 struct hso_net
*hso_net
= dev2net(hso_dev
);
2187 struct device
*dev
= hso_dev
->dev
;
2190 hso_net
->rfkill
= rfkill_allocate(&interface_to_usbdev(interface
)->dev
,
2192 if (!hso_net
->rfkill
) {
2193 dev_err(dev
, "%s - Out of memory", __func__
);
2196 rfkn
= kzalloc(20, GFP_KERNEL
);
2198 rfkill_free(hso_net
->rfkill
);
2199 dev_err(dev
, "%s - Out of memory", __func__
);
2202 snprintf(rfkn
, 20, "hso-%d",
2203 interface
->altsetting
->desc
.bInterfaceNumber
);
2204 hso_net
->rfkill
->name
= rfkn
;
2205 hso_net
->rfkill
->state
= RFKILL_STATE_ON
;
2206 hso_net
->rfkill
->data
= hso_dev
;
2207 hso_net
->rfkill
->toggle_radio
= hso_radio_toggle
;
2208 if (rfkill_register(hso_net
->rfkill
) < 0) {
2210 hso_net
->rfkill
->name
= NULL
;
2211 rfkill_free(hso_net
->rfkill
);
2212 dev_err(dev
, "%s - Failed to register rfkill", __func__
);
2217 /* Creates our network device */
2218 static struct hso_device
*hso_create_net_device(struct usb_interface
*interface
)
2221 struct net_device
*net
;
2222 struct hso_net
*hso_net
;
2223 struct hso_device
*hso_dev
;
2225 hso_dev
= hso_create_device(interface
, HSO_INTF_MUX
| HSO_PORT_NETWORK
);
2229 /* allocate our network device, then we can put in our private data */
2230 /* call hso_net_init to do the basic initialization */
2231 net
= alloc_netdev(sizeof(struct hso_net
), "hso%d", hso_net_init
);
2233 dev_err(&interface
->dev
, "Unable to create ethernet device\n");
2237 hso_net
= netdev_priv(net
);
2239 hso_dev
->port_data
.dev_net
= hso_net
;
2241 hso_net
->parent
= hso_dev
;
2243 hso_net
->in_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
,
2245 if (!hso_net
->in_endp
) {
2246 dev_err(&interface
->dev
, "Can't find BULK IN endpoint\n");
2249 hso_net
->out_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
,
2251 if (!hso_net
->out_endp
) {
2252 dev_err(&interface
->dev
, "Can't find BULK OUT endpoint\n");
2255 SET_NETDEV_DEV(net
, &interface
->dev
);
2257 /* registering our net device */
2258 result
= register_netdev(net
);
2260 dev_err(&interface
->dev
, "Failed to register device\n");
2264 /* start allocating */
2265 for (i
= 0; i
< MUX_BULK_RX_BUF_COUNT
; i
++) {
2266 hso_net
->mux_bulk_rx_urb_pool
[i
] = usb_alloc_urb(0, GFP_KERNEL
);
2267 if (!hso_net
->mux_bulk_rx_urb_pool
[i
]) {
2268 dev_err(&interface
->dev
, "Could not allocate rx urb\n");
2271 hso_net
->mux_bulk_rx_buf_pool
[i
] = kzalloc(MUX_BULK_RX_BUF_SIZE
,
2273 if (!hso_net
->mux_bulk_rx_buf_pool
[i
]) {
2274 dev_err(&interface
->dev
, "Could not allocate rx buf\n");
2278 hso_net
->mux_bulk_tx_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2279 if (!hso_net
->mux_bulk_tx_urb
) {
2280 dev_err(&interface
->dev
, "Could not allocate tx urb\n");
2283 hso_net
->mux_bulk_tx_buf
= kzalloc(MUX_BULK_TX_BUF_SIZE
, GFP_KERNEL
);
2284 if (!hso_net
->mux_bulk_tx_buf
) {
2285 dev_err(&interface
->dev
, "Could not allocate tx buf\n");
2289 add_net_device(hso_dev
);
2291 hso_log_port(hso_dev
);
2293 hso_create_rfkill(hso_dev
, interface
);
2297 hso_free_net_device(hso_dev
);
2301 /* Frees an AT channel ( goes for both mux and non-mux ) */
2302 static void hso_free_serial_device(struct hso_device
*hso_dev
)
2304 struct hso_serial
*serial
= dev2ser(hso_dev
);
2308 set_serial_by_index(serial
->minor
, NULL
);
2310 hso_serial_common_free(serial
);
2312 if (serial
->shared_int
) {
2313 mutex_lock(&serial
->shared_int
->shared_int_lock
);
2314 if (--serial
->shared_int
->ref_count
== 0)
2315 hso_free_shared_int(serial
->shared_int
);
2317 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
2320 hso_free_device(hso_dev
);
2323 /* Creates a bulk AT channel */
2324 static struct hso_device
*hso_create_bulk_serial_device(
2325 struct usb_interface
*interface
, int port
)
2327 struct hso_device
*hso_dev
;
2328 struct hso_serial
*serial
;
2331 hso_dev
= hso_create_device(interface
, port
);
2335 serial
= kzalloc(sizeof(*serial
), GFP_KERNEL
);
2339 serial
->parent
= hso_dev
;
2340 hso_dev
->port_data
.dev_serial
= serial
;
2342 if (port
& HSO_PORT_MODEM
)
2347 if (hso_serial_common_create(serial
, num_urbs
, BULK_URB_RX_SIZE
,
2351 serial
->in_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
,
2353 if (!serial
->in_endp
) {
2354 dev_err(&interface
->dev
, "Failed to find BULK IN ep\n");
2360 hso_get_ep(interface
, USB_ENDPOINT_XFER_BULK
, USB_DIR_OUT
))) {
2361 dev_err(&interface
->dev
, "Failed to find BULK IN ep\n");
2365 serial
->write_data
= hso_std_serial_write_data
;
2367 /* and record this serial */
2368 set_serial_by_index(serial
->minor
, serial
);
2370 /* setup the proc dirs and files if needed */
2371 hso_log_port(hso_dev
);
2373 /* done, return it */
2377 hso_serial_common_free(serial
);
2380 hso_free_device(hso_dev
);
2384 /* Creates a multiplexed AT channel */
2386 struct hso_device
*hso_create_mux_serial_device(struct usb_interface
*interface
,
2388 struct hso_shared_int
*mux
)
2390 struct hso_device
*hso_dev
;
2391 struct hso_serial
*serial
;
2394 port_spec
= HSO_INTF_MUX
;
2395 port_spec
&= ~HSO_PORT_MASK
;
2397 port_spec
|= hso_mux_to_port(port
);
2398 if ((port_spec
& HSO_PORT_MASK
) == HSO_PORT_NO_PORT
)
2401 hso_dev
= hso_create_device(interface
, port_spec
);
2405 serial
= kzalloc(sizeof(*serial
), GFP_KERNEL
);
2409 hso_dev
->port_data
.dev_serial
= serial
;
2410 serial
->parent
= hso_dev
;
2412 if (hso_serial_common_create
2413 (serial
, 1, CTRL_URB_RX_SIZE
, CTRL_URB_TX_SIZE
))
2416 serial
->tx_data_length
--;
2417 serial
->write_data
= hso_mux_serial_write_data
;
2419 serial
->shared_int
= mux
;
2420 mutex_lock(&serial
->shared_int
->shared_int_lock
);
2421 serial
->shared_int
->ref_count
++;
2422 mutex_unlock(&serial
->shared_int
->shared_int_lock
);
2424 /* and record this serial */
2425 set_serial_by_index(serial
->minor
, serial
);
2427 /* setup the proc dirs and files if needed */
2428 hso_log_port(hso_dev
);
2430 /* done, return it */
2435 tty_unregister_device(tty_drv
, serial
->minor
);
2439 hso_free_device(hso_dev
);
2444 static void hso_free_shared_int(struct hso_shared_int
*mux
)
2446 usb_free_urb(mux
->shared_intr_urb
);
2447 kfree(mux
->shared_intr_buf
);
2448 mutex_unlock(&mux
->shared_int_lock
);
2453 struct hso_shared_int
*hso_create_shared_int(struct usb_interface
*interface
)
2455 struct hso_shared_int
*mux
= kzalloc(sizeof(*mux
), GFP_KERNEL
);
2460 mux
->intr_endp
= hso_get_ep(interface
, USB_ENDPOINT_XFER_INT
,
2462 if (!mux
->intr_endp
) {
2463 dev_err(&interface
->dev
, "Can't find INT IN endpoint\n");
2467 mux
->shared_intr_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2468 if (!mux
->shared_intr_urb
) {
2469 dev_err(&interface
->dev
, "Could not allocate intr urb?");
2472 mux
->shared_intr_buf
= kzalloc(mux
->intr_endp
->wMaxPacketSize
,
2474 if (!mux
->shared_intr_buf
) {
2475 dev_err(&interface
->dev
, "Could not allocate intr buf?");
2479 mutex_init(&mux
->shared_int_lock
);
2484 kfree(mux
->shared_intr_buf
);
2485 usb_free_urb(mux
->shared_intr_urb
);
2490 /* Gets the port spec for a certain interface */
2491 static int hso_get_config_data(struct usb_interface
*interface
)
2493 struct usb_device
*usbdev
= interface_to_usbdev(interface
);
2495 u32 if_num
= interface
->altsetting
->desc
.bInterfaceNumber
;
2498 if (usb_control_msg(usbdev
, usb_rcvctrlpipe(usbdev
, 0),
2499 0x86, 0xC0, 0, 0, config_data
, 17,
2500 USB_CTRL_SET_TIMEOUT
) != 0x11) {
2504 switch (config_data
[if_num
]) {
2509 result
= HSO_PORT_DIAG
;
2512 result
= HSO_PORT_GPS
;
2515 result
= HSO_PORT_GPS_CONTROL
;
2518 result
= HSO_PORT_APP
;
2521 result
= HSO_PORT_APP2
;
2524 result
= HSO_PORT_CONTROL
;
2527 result
= HSO_PORT_NETWORK
;
2530 result
= HSO_PORT_MODEM
;
2533 result
= HSO_PORT_MSD
;
2536 result
= HSO_PORT_PCSC
;
2539 result
= HSO_PORT_VOICE
;
2546 result
|= HSO_INTF_BULK
;
2548 if (config_data
[16] & 0x1)
2549 result
|= HSO_INFO_CRC_BUG
;
2554 /* called once for each interface upon device insertion */
2555 static int hso_probe(struct usb_interface
*interface
,
2556 const struct usb_device_id
*id
)
2558 int mux
, i
, if_num
, port_spec
;
2559 unsigned char port_mask
;
2560 struct hso_device
*hso_dev
= NULL
;
2561 struct hso_shared_int
*shared_int
;
2562 struct hso_device
*tmp_dev
= NULL
;
2564 if_num
= interface
->altsetting
->desc
.bInterfaceNumber
;
2566 /* Get the interface/port specification from either driver_info or from
2567 * the device itself */
2568 if (id
->driver_info
)
2569 port_spec
= ((u32
*)(id
->driver_info
))[if_num
];
2571 port_spec
= hso_get_config_data(interface
);
2573 if (interface
->cur_altsetting
->desc
.bInterfaceClass
!= 0xFF) {
2574 dev_err(&interface
->dev
, "Not our interface\n");
2577 /* Check if we need to switch to alt interfaces prior to port
2579 if (interface
->num_altsetting
> 1)
2580 usb_set_interface(interface_to_usbdev(interface
), if_num
, 1);
2581 interface
->needs_remote_wakeup
= 1;
2583 /* Allocate new hso device(s) */
2584 switch (port_spec
& HSO_INTF_MASK
) {
2586 if ((port_spec
& HSO_PORT_MASK
) == HSO_PORT_NETWORK
) {
2587 /* Create the network device */
2589 hso_dev
= hso_create_net_device(interface
);
2596 if (hso_get_mux_ports(interface
, &port_mask
))
2597 /* TODO: de-allocate everything */
2600 shared_int
= hso_create_shared_int(interface
);
2604 for (i
= 1, mux
= 0; i
< 0x100; i
= i
<< 1, mux
++) {
2605 if (port_mask
& i
) {
2606 hso_dev
= hso_create_mux_serial_device(
2607 interface
, i
, shared_int
);
2618 /* It's a regular bulk interface */
2619 if (((port_spec
& HSO_PORT_MASK
) == HSO_PORT_NETWORK
)
2621 hso_dev
= hso_create_net_device(interface
);
2624 hso_create_bulk_serial_device(interface
, port_spec
);
2632 usb_driver_claim_interface(&hso_driver
, interface
, hso_dev
);
2634 /* save our data pointer in this device */
2635 usb_set_intfdata(interface
, hso_dev
);
2640 hso_free_interface(interface
);
2644 /* device removed, cleaning up */
2645 static void hso_disconnect(struct usb_interface
*interface
)
2647 hso_free_interface(interface
);
2649 /* remove reference of our private data */
2650 usb_set_intfdata(interface
, NULL
);
2652 usb_driver_release_interface(&hso_driver
, interface
);
2655 static void async_get_intf(struct work_struct
*data
)
2657 struct hso_device
*hso_dev
=
2658 container_of(data
, struct hso_device
, async_get_intf
);
2659 usb_autopm_get_interface(hso_dev
->interface
);
2662 static void async_put_intf(struct work_struct
*data
)
2664 struct hso_device
*hso_dev
=
2665 container_of(data
, struct hso_device
, async_put_intf
);
2666 usb_autopm_put_interface(hso_dev
->interface
);
2669 static int hso_get_activity(struct hso_device
*hso_dev
)
2671 if (hso_dev
->usb
->state
== USB_STATE_SUSPENDED
) {
2672 if (!hso_dev
->is_active
) {
2673 hso_dev
->is_active
= 1;
2674 schedule_work(&hso_dev
->async_get_intf
);
2678 if (hso_dev
->usb
->state
!= USB_STATE_CONFIGURED
)
2681 usb_mark_last_busy(hso_dev
->usb
);
2686 static int hso_put_activity(struct hso_device
*hso_dev
)
2688 if (hso_dev
->usb
->state
!= USB_STATE_SUSPENDED
) {
2689 if (hso_dev
->is_active
) {
2690 hso_dev
->is_active
= 0;
2691 schedule_work(&hso_dev
->async_put_intf
);
2695 hso_dev
->is_active
= 0;
2699 /* called by kernel when we need to suspend device */
2700 static int hso_suspend(struct usb_interface
*iface
, pm_message_t message
)
2704 /* Stop all serial ports */
2705 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
2706 if (serial_table
[i
] && (serial_table
[i
]->interface
== iface
)) {
2707 result
= hso_stop_serial_device(serial_table
[i
]);
2713 /* Stop all network ports */
2714 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
2715 if (network_table
[i
] &&
2716 (network_table
[i
]->interface
== iface
)) {
2717 result
= hso_stop_net_device(network_table
[i
]);
2727 /* called by kernel when we need to resume device */
2728 static int hso_resume(struct usb_interface
*iface
)
2731 struct hso_net
*hso_net
;
2733 /* Start all serial ports */
2734 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
2735 if (serial_table
[i
] && (serial_table
[i
]->interface
== iface
)) {
2736 if (dev2ser(serial_table
[i
])->open_count
) {
2738 hso_start_serial_device(serial_table
[i
], GFP_NOIO
);
2739 hso_kick_transmit(dev2ser(serial_table
[i
]));
2746 /* Start all network ports */
2747 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
2748 if (network_table
[i
] &&
2749 (network_table
[i
]->interface
== iface
)) {
2750 hso_net
= dev2net(network_table
[i
]);
2751 /* First transmit any lingering data, then restart the
2753 if (hso_net
->skb_tx_buf
) {
2754 dev_dbg(&iface
->dev
,
2755 "Transmitting lingering data\n");
2756 hso_net_start_xmit(hso_net
->skb_tx_buf
,
2758 hso_net
->skb_tx_buf
= NULL
;
2760 result
= hso_start_net_device(network_table
[i
]);
2770 static void hso_serial_ref_free(struct kref
*ref
)
2772 struct hso_device
*hso_dev
= container_of(ref
, struct hso_device
, ref
);
2774 hso_free_serial_device(hso_dev
);
2777 static void hso_free_interface(struct usb_interface
*interface
)
2779 struct hso_serial
*hso_dev
;
2782 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++) {
2784 && (serial_table
[i
]->interface
== interface
)) {
2785 hso_dev
= dev2ser(serial_table
[i
]);
2787 tty_hangup(hso_dev
->tty
);
2788 mutex_lock(&hso_dev
->parent
->mutex
);
2789 hso_dev
->parent
->usb_gone
= 1;
2790 mutex_unlock(&hso_dev
->parent
->mutex
);
2791 kref_put(&serial_table
[i
]->ref
, hso_serial_ref_free
);
2795 for (i
= 0; i
< HSO_MAX_NET_DEVICES
; i
++) {
2796 if (network_table
[i
]
2797 && (network_table
[i
]->interface
== interface
)) {
2798 struct rfkill
*rfk
= dev2net(network_table
[i
])->rfkill
;
2799 /* hso_stop_net_device doesn't stop the net queue since
2800 * traffic needs to start it again when suspended */
2801 netif_stop_queue(dev2net(network_table
[i
])->net
);
2802 hso_stop_net_device(network_table
[i
]);
2803 cancel_work_sync(&network_table
[i
]->async_put_intf
);
2804 cancel_work_sync(&network_table
[i
]->async_get_intf
);
2806 rfkill_unregister(rfk
);
2807 hso_free_net_device(network_table
[i
]);
2812 /* Helper functions */
2814 /* Get the endpoint ! */
2815 static struct usb_endpoint_descriptor
*hso_get_ep(struct usb_interface
*intf
,
2819 struct usb_host_interface
*iface
= intf
->cur_altsetting
;
2820 struct usb_endpoint_descriptor
*endp
;
2822 for (i
= 0; i
< iface
->desc
.bNumEndpoints
; i
++) {
2823 endp
= &iface
->endpoint
[i
].desc
;
2824 if (((endp
->bEndpointAddress
& USB_ENDPOINT_DIR_MASK
) == dir
) &&
2825 ((endp
->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
) == type
))
2832 /* Get the byte that describes which ports are enabled */
2833 static int hso_get_mux_ports(struct usb_interface
*intf
, unsigned char *ports
)
2836 struct usb_host_interface
*iface
= intf
->cur_altsetting
;
2838 if (iface
->extralen
== 3) {
2839 *ports
= iface
->extra
[2];
2843 for (i
= 0; i
< iface
->desc
.bNumEndpoints
; i
++) {
2844 if (iface
->endpoint
[i
].extralen
== 3) {
2845 *ports
= iface
->endpoint
[i
].extra
[2];
2853 /* interrupt urb needs to be submitted, used for serial read of muxed port */
2854 static int hso_mux_submit_intr_urb(struct hso_shared_int
*shared_int
,
2855 struct usb_device
*usb
, gfp_t gfp
)
2859 usb_fill_int_urb(shared_int
->shared_intr_urb
, usb
,
2861 shared_int
->intr_endp
->bEndpointAddress
& 0x7F),
2862 shared_int
->shared_intr_buf
,
2863 shared_int
->intr_endp
->wMaxPacketSize
,
2864 intr_callback
, shared_int
,
2865 shared_int
->intr_endp
->bInterval
);
2867 result
= usb_submit_urb(shared_int
->shared_intr_urb
, gfp
);
2869 dev_warn(&usb
->dev
, "%s failed mux_intr_urb %d", __func__
,
2875 /* operations setup of the serial interface */
2876 static const struct tty_operations hso_serial_ops
= {
2877 .open
= hso_serial_open
,
2878 .close
= hso_serial_close
,
2879 .write
= hso_serial_write
,
2880 .write_room
= hso_serial_write_room
,
2881 .set_termios
= hso_serial_set_termios
,
2882 .chars_in_buffer
= hso_serial_chars_in_buffer
,
2883 .tiocmget
= hso_serial_tiocmget
,
2884 .tiocmset
= hso_serial_tiocmset
,
2885 .unthrottle
= hso_unthrottle
2888 static struct usb_driver hso_driver
= {
2889 .name
= driver_name
,
2891 .disconnect
= hso_disconnect
,
2892 .id_table
= hso_ids
,
2893 .suspend
= hso_suspend
,
2894 .resume
= hso_resume
,
2895 .supports_autosuspend
= 1,
2898 static int __init
hso_init(void)
2903 /* put it in the log */
2904 printk(KERN_INFO
"hso: %s\n", version
);
2906 /* Initialise the serial table semaphore and table */
2907 spin_lock_init(&serial_table_lock
);
2908 for (i
= 0; i
< HSO_SERIAL_TTY_MINORS
; i
++)
2909 serial_table
[i
] = NULL
;
2911 /* allocate our driver using the proper amount of supported minors */
2912 tty_drv
= alloc_tty_driver(HSO_SERIAL_TTY_MINORS
);
2916 /* fill in all needed values */
2917 tty_drv
->magic
= TTY_DRIVER_MAGIC
;
2918 tty_drv
->owner
= THIS_MODULE
;
2919 tty_drv
->driver_name
= driver_name
;
2920 tty_drv
->name
= tty_filename
;
2922 /* if major number is provided as parameter, use that one */
2924 tty_drv
->major
= tty_major
;
2926 tty_drv
->minor_start
= 0;
2927 tty_drv
->num
= HSO_SERIAL_TTY_MINORS
;
2928 tty_drv
->type
= TTY_DRIVER_TYPE_SERIAL
;
2929 tty_drv
->subtype
= SERIAL_TYPE_NORMAL
;
2930 tty_drv
->flags
= TTY_DRIVER_REAL_RAW
| TTY_DRIVER_DYNAMIC_DEV
;
2931 tty_drv
->init_termios
= tty_std_termios
;
2932 tty_drv
->init_termios
.c_cflag
= B9600
| CS8
| CREAD
| HUPCL
| CLOCAL
;
2933 tty_drv
->termios
= hso_serial_termios
;
2934 tty_drv
->termios_locked
= hso_serial_termios_locked
;
2935 tty_set_operations(tty_drv
, &hso_serial_ops
);
2937 /* register the tty driver */
2938 result
= tty_register_driver(tty_drv
);
2940 printk(KERN_ERR
"%s - tty_register_driver failed(%d)\n",
2945 /* register this module as an usb driver */
2946 result
= usb_register(&hso_driver
);
2948 printk(KERN_ERR
"Could not register hso driver? error: %d\n",
2950 /* cleanup serial interface */
2951 tty_unregister_driver(tty_drv
);
2959 static void __exit
hso_exit(void)
2961 printk(KERN_INFO
"hso: unloaded\n");
2963 tty_unregister_driver(tty_drv
);
2964 /* deregister the usb driver */
2965 usb_deregister(&hso_driver
);
2968 /* Module definitions */
2969 module_init(hso_init
);
2970 module_exit(hso_exit
);
2972 MODULE_AUTHOR(MOD_AUTHOR
);
2973 MODULE_DESCRIPTION(MOD_DESCRIPTION
);
2974 MODULE_LICENSE(MOD_LICENSE
);
2975 MODULE_INFO(Version
, DRIVER_VERSION
);
2977 /* change the debug level (eg: insmod hso.ko debug=0x04) */
2978 MODULE_PARM_DESC(debug
, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
2979 module_param(debug
, int, S_IRUGO
| S_IWUSR
);
2981 /* set the major tty number (eg: insmod hso.ko tty_major=245) */
2982 MODULE_PARM_DESC(tty_major
, "Set the major tty number");
2983 module_param(tty_major
, int, S_IRUGO
| S_IWUSR
);
2985 /* disable network interface (eg: insmod hso.ko disable_net=1) */
2986 MODULE_PARM_DESC(disable_net
, "Disable the network interface");
2987 module_param(disable_net
, int, S_IRUGO
| S_IWUSR
);