1 /******************************************************************************
3 * Driver for Option High Speed Mobile Devices.
5 * Copyright (C) 2008 Option International
6 * Filip Aben <f.aben@option.com>
7 * Denis Joseph Barrow <d.barow@option.com>
8 * Jan Dumon <j.dumon@option.com>
9 * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd)
10 * <ajb@spheresystems.co.uk>
11 * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
12 * Copyright (C) 2008 Novell, Inc.
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
29 *****************************************************************************/
31 /******************************************************************************
33 * Description of the device:
35 * Interface 0: Contains the IP network interface on the bulk end points.
36 * The multiplexed serial ports are using the interrupt and
38 * Interrupt contains a bitmap telling which multiplexed
39 * serialport needs servicing.
41 * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the
42 * port is opened, as this have a huge impact on the network port
45 * Interface 2: Standard modem interface - circuit switched interface, this
46 * can be used to make a standard ppp connection however it
47 * should not be used in conjunction with the IP network interface
48 * enabled for USB performance reasons i.e. if using this set
49 * ideally disable_net=1.
51 *****************************************************************************/
53 #include <linux/sched.h>
54 #include <linux/slab.h>
55 #include <linux/init.h>
56 #include <linux/delay.h>
57 #include <linux/netdevice.h>
58 #include <linux/module.h>
59 #include <linux/ethtool.h>
60 #include <linux/usb.h>
61 #include <linux/timer.h>
62 #include <linux/tty.h>
63 #include <linux/tty_driver.h>
64 #include <linux/tty_flip.h>
65 #include <linux/kmod.h>
66 #include <linux/rfkill.h>
68 #include <linux/uaccess.h>
69 #include <linux/usb/cdc.h>
71 #include <asm/byteorder.h>
72 #include <linux/serial_core.h>
73 #include <linux/serial.h>
76 #define DRIVER_VERSION "1.2"
77 #define MOD_AUTHOR "Option Wireless"
78 #define MOD_DESCRIPTION "USB High Speed Option driver"
79 #define MOD_LICENSE "GPL"
81 #define HSO_MAX_NET_DEVICES 10
82 #define HSO__MAX_MTU 2048
83 #define DEFAULT_MTU 1500
84 #define DEFAULT_MRU 1500
86 #define CTRL_URB_RX_SIZE 1024
87 #define CTRL_URB_TX_SIZE 64
89 #define BULK_URB_RX_SIZE 4096
90 #define BULK_URB_TX_SIZE 8192
92 #define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU
93 #define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU
94 #define MUX_BULK_RX_BUF_COUNT 4
95 #define USB_TYPE_OPTION_VENDOR 0x20
97 /* These definitions are used with the struct hso_net flags element */
98 /* - use *_bit operations on it. (bit indices not values.) */
99 #define HSO_NET_RUNNING 0
101 #define HSO_NET_TX_TIMEOUT (HZ*10)
103 #define HSO_SERIAL_MAGIC 0x48534f31
105 /* Number of ttys to handle */
106 #define HSO_SERIAL_TTY_MINORS 256
108 #define MAX_RX_URBS 2
110 static inline struct hso_serial *get_serial_by_tty(struct tty_struct *tty)
113 return tty->driver_data;
117 /*****************************************************************************/
118 /* Debugging functions */
119 /*****************************************************************************/
120 #define D__(lvl_, fmt, arg...) \
122 printk(lvl_ "[%d:%s]: " fmt "\n", \
123 __LINE__, __func__, ## arg); \
126 #define D_(lvl, args...) \
129 D__(KERN_INFO, args); \
132 #define D1(args...) D_(0x01, ##args)
133 #define D2(args...) D_(0x02, ##args)
134 #define D3(args...) D_(0x04, ##args)
135 #define D4(args...) D_(0x08, ##args)
136 #define D5(args...) D_(0x10, ##args)
138 /*****************************************************************************/
140 /*****************************************************************************/
141 enum pkt_parse_state {
147 /*****************************************************************************/
149 /*****************************************************************************/
151 struct hso_shared_int {
152 struct usb_endpoint_descriptor *intr_endp;
153 void *shared_intr_buf;
154 struct urb *shared_intr_urb;
155 struct usb_device *usb;
158 struct mutex shared_int_lock;
162 struct hso_device *parent;
163 struct net_device *net;
164 struct rfkill *rfkill;
166 struct usb_endpoint_descriptor *in_endp;
167 struct usb_endpoint_descriptor *out_endp;
169 struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT];
170 struct urb *mux_bulk_tx_urb;
171 void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT];
172 void *mux_bulk_tx_buf;
174 struct sk_buff *skb_rx_buf;
175 struct sk_buff *skb_tx_buf;
177 enum pkt_parse_state rx_parse_state;
180 unsigned short rx_buf_size;
181 unsigned short rx_buf_missing;
182 struct iphdr rx_ip_hdr;
193 #define BM_REQUEST_TYPE (0xa1)
194 #define B_NOTIFICATION (0x20)
195 #define W_VALUE (0x0)
196 #define W_INDEX (0x2)
197 #define W_LENGTH (0x2)
199 #define B_OVERRUN (0x1<<6)
200 #define B_PARITY (0x1<<5)
201 #define B_FRAMING (0x1<<4)
202 #define B_RING_SIGNAL (0x1<<3)
203 #define B_BREAK (0x1<<2)
204 #define B_TX_CARRIER (0x1<<1)
205 #define B_RX_CARRIER (0x1<<0)
207 struct hso_serial_state_notification {
213 u16 UART_state_bitmap;
214 } __attribute__((packed));
216 struct hso_tiocmget {
218 wait_queue_head_t waitq;
220 struct usb_endpoint_descriptor *endp;
222 struct hso_serial_state_notification serial_state_notification;
223 u16 prev_UART_state_bitmap;
224 struct uart_icount icount;
229 struct hso_device *parent;
233 struct hso_shared_int *shared_int;
235 /* rx/tx urb could be either a bulk urb or a control urb depending
236 on which serial port it is used on. */
237 struct urb *rx_urb[MAX_RX_URBS];
239 u8 *rx_data[MAX_RX_URBS];
240 u16 rx_data_length; /* should contain allocated length */
245 u16 tx_data_length; /* should contain allocated length */
248 struct usb_ctrlrequest ctrl_req_tx;
249 struct usb_ctrlrequest ctrl_req_rx;
251 struct usb_endpoint_descriptor *in_endp;
252 struct usb_endpoint_descriptor *out_endp;
254 enum rx_ctrl_state rx_state;
257 unsigned tx_urb_used:1;
259 /* from usb_serial_port */
260 struct tty_struct *tty;
262 spinlock_t serial_lock;
264 int (*write_data) (struct hso_serial *serial);
265 struct hso_tiocmget *tiocmget;
266 /* Hacks required to get flow control
267 * working on the serial receive buffers
268 * so as not to drop characters on the floor.
271 u16 curr_rx_urb_offset;
272 u8 rx_urb_filled[MAX_RX_URBS];
273 struct tasklet_struct unthrottle_tasklet;
274 struct work_struct retry_unthrottle_workqueue;
279 struct hso_serial *dev_serial;
280 struct hso_net *dev_net;
287 struct work_struct async_get_intf;
288 struct work_struct async_put_intf;
289 struct work_struct reset_device;
291 struct usb_device *usb;
292 struct usb_interface *interface;
299 /* Type of interface */
300 #define HSO_INTF_MASK 0xFF00
301 #define HSO_INTF_MUX 0x0100
302 #define HSO_INTF_BULK 0x0200
305 #define HSO_PORT_MASK 0xFF
306 #define HSO_PORT_NO_PORT 0x0
307 #define HSO_PORT_CONTROL 0x1
308 #define HSO_PORT_APP 0x2
309 #define HSO_PORT_GPS 0x3
310 #define HSO_PORT_PCSC 0x4
311 #define HSO_PORT_APP2 0x5
312 #define HSO_PORT_GPS_CONTROL 0x6
313 #define HSO_PORT_MSD 0x7
314 #define HSO_PORT_VOICE 0x8
315 #define HSO_PORT_DIAG2 0x9
316 #define HSO_PORT_DIAG 0x10
317 #define HSO_PORT_MODEM 0x11
318 #define HSO_PORT_NETWORK 0x12
320 /* Additional device info */
321 #define HSO_INFO_MASK 0xFF000000
322 #define HSO_INFO_CRC_BUG 0x01000000
324 /*****************************************************************************/
326 /*****************************************************************************/
327 /* Serial driver functions */
328 static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
329 unsigned int set, unsigned int clear);
330 static void ctrl_callback(struct urb *urb);
331 static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial);
332 static void hso_kick_transmit(struct hso_serial *serial);
333 /* Helper functions */
334 static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int,
335 struct usb_device *usb, gfp_t gfp);
336 static void handle_usb_error(int status, const char *function,
337 struct hso_device *hso_dev);
338 static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
340 static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports);
341 static void hso_free_interface(struct usb_interface *intf);
342 static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags);
343 static int hso_stop_serial_device(struct hso_device *hso_dev);
344 static int hso_start_net_device(struct hso_device *hso_dev);
345 static void hso_free_shared_int(struct hso_shared_int *shared_int);
346 static int hso_stop_net_device(struct hso_device *hso_dev);
347 static void hso_serial_ref_free(struct kref *ref);
348 static void hso_std_serial_read_bulk_callback(struct urb *urb);
349 static int hso_mux_serial_read(struct hso_serial *serial);
350 static void async_get_intf(struct work_struct *data);
351 static void async_put_intf(struct work_struct *data);
352 static int hso_put_activity(struct hso_device *hso_dev);
353 static int hso_get_activity(struct hso_device *hso_dev);
354 static void tiocmget_intr_callback(struct urb *urb);
355 static void reset_device(struct work_struct *data);
356 /*****************************************************************************/
357 /* Helping functions */
358 /*****************************************************************************/
362 static inline struct hso_net *dev2net(struct hso_device *hso_dev)
364 return hso_dev->port_data.dev_net;
367 static inline struct hso_serial *dev2ser(struct hso_device *hso_dev)
369 return hso_dev->port_data.dev_serial;
372 /* Debugging functions */
374 static void dbg_dump(int line_count, const char *func_name, unsigned char *buf,
377 static char name[255];
379 sprintf(name, "hso[%d:%s]", line_count, func_name);
380 print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len);
383 #define DUMP(buf_, len_) \
384 dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_)
386 #define DUMP1(buf_, len_) \
392 #define DUMP(buf_, len_)
393 #define DUMP1(buf_, len_)
396 /* module parameters */
398 static int tty_major;
399 static int disable_net;
402 static const char driver_name[] = "hso";
403 static const char tty_filename[] = "ttyHS";
404 static const char *version = __FILE__ ": " DRIVER_VERSION " " MOD_AUTHOR;
405 /* the usb driver itself (registered in hso_init) */
406 static struct usb_driver hso_driver;
407 /* serial structures */
408 static struct tty_driver *tty_drv;
409 static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS];
410 static struct hso_device *network_table[HSO_MAX_NET_DEVICES];
411 static spinlock_t serial_table_lock;
413 static const s32 default_port_spec[] = {
414 HSO_INTF_MUX | HSO_PORT_NETWORK,
415 HSO_INTF_BULK | HSO_PORT_DIAG,
416 HSO_INTF_BULK | HSO_PORT_MODEM,
420 static const s32 icon321_port_spec[] = {
421 HSO_INTF_MUX | HSO_PORT_NETWORK,
422 HSO_INTF_BULK | HSO_PORT_DIAG2,
423 HSO_INTF_BULK | HSO_PORT_MODEM,
424 HSO_INTF_BULK | HSO_PORT_DIAG,
428 #define default_port_device(vendor, product) \
429 USB_DEVICE(vendor, product), \
430 .driver_info = (kernel_ulong_t)default_port_spec
432 #define icon321_port_device(vendor, product) \
433 USB_DEVICE(vendor, product), \
434 .driver_info = (kernel_ulong_t)icon321_port_spec
436 /* list of devices we support */
437 static const struct usb_device_id hso_ids[] = {
438 {default_port_device(0x0af0, 0x6711)},
439 {default_port_device(0x0af0, 0x6731)},
440 {default_port_device(0x0af0, 0x6751)},
441 {default_port_device(0x0af0, 0x6771)},
442 {default_port_device(0x0af0, 0x6791)},
443 {default_port_device(0x0af0, 0x6811)},
444 {default_port_device(0x0af0, 0x6911)},
445 {default_port_device(0x0af0, 0x6951)},
446 {default_port_device(0x0af0, 0x6971)},
447 {default_port_device(0x0af0, 0x7011)},
448 {default_port_device(0x0af0, 0x7031)},
449 {default_port_device(0x0af0, 0x7051)},
450 {default_port_device(0x0af0, 0x7071)},
451 {default_port_device(0x0af0, 0x7111)},
452 {default_port_device(0x0af0, 0x7211)},
453 {default_port_device(0x0af0, 0x7251)},
454 {default_port_device(0x0af0, 0x7271)},
455 {default_port_device(0x0af0, 0x7311)},
456 {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */
457 {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */
458 {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */
459 {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */
460 {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */
461 {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */
462 {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */
463 {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */
464 {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */
465 {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */
466 {USB_DEVICE(0x0af0, 0x7701)},
467 {USB_DEVICE(0x0af0, 0x7706)},
468 {USB_DEVICE(0x0af0, 0x7801)},
469 {USB_DEVICE(0x0af0, 0x7901)},
470 {USB_DEVICE(0x0af0, 0x7A01)},
471 {USB_DEVICE(0x0af0, 0x7A05)},
472 {USB_DEVICE(0x0af0, 0x8200)},
473 {USB_DEVICE(0x0af0, 0x8201)},
474 {USB_DEVICE(0x0af0, 0x8300)},
475 {USB_DEVICE(0x0af0, 0x8302)},
476 {USB_DEVICE(0x0af0, 0x8304)},
477 {USB_DEVICE(0x0af0, 0x8400)},
478 {USB_DEVICE(0x0af0, 0x8600)},
479 {USB_DEVICE(0x0af0, 0x8800)},
480 {USB_DEVICE(0x0af0, 0x8900)},
481 {USB_DEVICE(0x0af0, 0xd035)},
482 {USB_DEVICE(0x0af0, 0xd055)},
483 {USB_DEVICE(0x0af0, 0xd155)},
484 {USB_DEVICE(0x0af0, 0xd255)},
485 {USB_DEVICE(0x0af0, 0xd057)},
486 {USB_DEVICE(0x0af0, 0xd157)},
487 {USB_DEVICE(0x0af0, 0xd257)},
488 {USB_DEVICE(0x0af0, 0xd357)},
489 {USB_DEVICE(0x0af0, 0xd058)},
490 {USB_DEVICE(0x0af0, 0xc100)},
493 MODULE_DEVICE_TABLE(usb, hso_ids);
495 /* Sysfs attribute */
496 static ssize_t hso_sysfs_show_porttype(struct device *dev,
497 struct device_attribute *attr,
500 struct hso_device *hso_dev = dev_get_drvdata(dev);
506 switch (hso_dev->port_spec & HSO_PORT_MASK) {
507 case HSO_PORT_CONTROL:
508 port_name = "Control";
511 port_name = "Application";
514 port_name = "Application2";
519 case HSO_PORT_GPS_CONTROL:
520 port_name = "GPS Control";
526 port_name = "Diagnostic";
529 port_name = "Diagnostic2";
534 case HSO_PORT_NETWORK:
535 port_name = "Network";
538 port_name = "Unknown";
542 return sprintf(buf, "%s\n", port_name);
544 static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL);
546 static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb)
550 for (idx = 0; idx < serial->num_rx_urbs; idx++)
551 if (serial->rx_urb[idx] == urb)
553 dev_err(serial->parent->dev, "hso_urb_to_index failed\n");
557 /* converts mux value to a port spec value */
558 static u32 hso_mux_to_port(int mux)
564 result = HSO_PORT_CONTROL;
567 result = HSO_PORT_APP;
570 result = HSO_PORT_PCSC;
573 result = HSO_PORT_GPS;
576 result = HSO_PORT_APP2;
579 result = HSO_PORT_NO_PORT;
584 /* converts port spec value to a mux value */
585 static u32 hso_port_to_mux(int port)
589 switch (port & HSO_PORT_MASK) {
590 case HSO_PORT_CONTROL:
611 static struct hso_serial *get_serial_by_shared_int_and_type(
612 struct hso_shared_int *shared_int,
617 port = hso_mux_to_port(mux);
619 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
620 if (serial_table[i] &&
621 (dev2ser(serial_table[i])->shared_int == shared_int) &&
622 ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) {
623 return dev2ser(serial_table[i]);
630 static struct hso_serial *get_serial_by_index(unsigned index)
632 struct hso_serial *serial = NULL;
635 spin_lock_irqsave(&serial_table_lock, flags);
636 if (serial_table[index])
637 serial = dev2ser(serial_table[index]);
638 spin_unlock_irqrestore(&serial_table_lock, flags);
643 static int get_free_serial_index(void)
648 spin_lock_irqsave(&serial_table_lock, flags);
649 for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) {
650 if (serial_table[index] == NULL) {
651 spin_unlock_irqrestore(&serial_table_lock, flags);
655 spin_unlock_irqrestore(&serial_table_lock, flags);
657 printk(KERN_ERR "%s: no free serial devices in table\n", __func__);
661 static void set_serial_by_index(unsigned index, struct hso_serial *serial)
665 spin_lock_irqsave(&serial_table_lock, flags);
667 serial_table[index] = serial->parent;
669 serial_table[index] = NULL;
670 spin_unlock_irqrestore(&serial_table_lock, flags);
673 static void handle_usb_error(int status, const char *function,
674 struct hso_device *hso_dev)
680 explanation = "no device";
683 explanation = "endpoint not enabled";
686 explanation = "endpoint stalled";
689 explanation = "not enough bandwidth";
692 explanation = "device disabled";
695 explanation = "device suspended";
701 explanation = "internal error";
707 explanation = "protocol error";
709 schedule_work(&hso_dev->reset_device);
712 explanation = "unknown status";
716 /* log a meaningful explanation of an USB status */
717 D1("%s: received USB status - %s (%d)", function, explanation, status);
720 /* Network interface functions */
722 /* called when net interface is brought up by ifconfig */
723 static int hso_net_open(struct net_device *net)
725 struct hso_net *odev = netdev_priv(net);
726 unsigned long flags = 0;
729 dev_err(&net->dev, "No net device !\n");
733 odev->skb_tx_buf = NULL;
735 /* setup environment */
736 spin_lock_irqsave(&odev->net_lock, flags);
737 odev->rx_parse_state = WAIT_IP;
738 odev->rx_buf_size = 0;
739 odev->rx_buf_missing = sizeof(struct iphdr);
740 spin_unlock_irqrestore(&odev->net_lock, flags);
742 /* We are up and running. */
743 set_bit(HSO_NET_RUNNING, &odev->flags);
744 hso_start_net_device(odev->parent);
746 /* Tell the kernel we are ready to start receiving from it */
747 netif_start_queue(net);
752 /* called when interface is brought down by ifconfig */
753 static int hso_net_close(struct net_device *net)
755 struct hso_net *odev = netdev_priv(net);
757 /* we don't need the queue anymore */
758 netif_stop_queue(net);
759 /* no longer running */
760 clear_bit(HSO_NET_RUNNING, &odev->flags);
762 hso_stop_net_device(odev->parent);
768 /* USB tells is xmit done, we should start the netqueue again */
769 static void write_bulk_callback(struct urb *urb)
771 struct hso_net *odev = urb->context;
772 int status = urb->status;
775 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
776 dev_err(&urb->dev->dev, "%s: device not running\n", __func__);
780 /* Do we still have a valid kernel network device? */
781 if (!netif_device_present(odev->net)) {
782 dev_err(&urb->dev->dev, "%s: net device not present\n",
787 /* log status, but don't act on it, we don't need to resubmit anything
790 handle_usb_error(status, __func__, odev->parent);
792 hso_put_activity(odev->parent);
794 /* Tell the network interface we are ready for another frame */
795 netif_wake_queue(odev->net);
798 /* called by kernel when we need to transmit a packet */
799 static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb,
800 struct net_device *net)
802 struct hso_net *odev = netdev_priv(net);
805 /* Tell the kernel, "No more frames 'til we are done with this one." */
806 netif_stop_queue(net);
807 if (hso_get_activity(odev->parent) == -EAGAIN) {
808 odev->skb_tx_buf = skb;
813 DUMP1(skb->data, skb->len);
814 /* Copy it from kernel memory to OUR memory */
815 memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len);
816 D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE);
818 /* Fill in the URB for shipping it out. */
819 usb_fill_bulk_urb(odev->mux_bulk_tx_urb,
821 usb_sndbulkpipe(odev->parent->usb,
823 bEndpointAddress & 0x7F),
824 odev->mux_bulk_tx_buf, skb->len, write_bulk_callback,
827 /* Deal with the Zero Length packet problem, I hope */
828 odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET;
830 /* Send the URB on its merry way. */
831 result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC);
833 dev_warn(&odev->parent->interface->dev,
834 "failed mux_bulk_tx_urb %d\n", result);
835 net->stats.tx_errors++;
836 netif_start_queue(net);
838 net->stats.tx_packets++;
839 net->stats.tx_bytes += skb->len;
846 static void hso_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
848 struct hso_net *odev = netdev_priv(net);
850 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
851 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
852 usb_make_path(odev->parent->usb, info->bus_info, sizeof info->bus_info);
855 static const struct ethtool_ops ops = {
856 .get_drvinfo = hso_get_drvinfo,
857 .get_link = ethtool_op_get_link
860 /* called when a packet did not ack after watchdogtimeout */
861 static void hso_net_tx_timeout(struct net_device *net)
863 struct hso_net *odev = netdev_priv(net);
868 /* Tell syslog we are hosed. */
869 dev_warn(&net->dev, "Tx timed out.\n");
871 /* Tear the waiting frame off the list */
872 if (odev->mux_bulk_tx_urb &&
873 (odev->mux_bulk_tx_urb->status == -EINPROGRESS))
874 usb_unlink_urb(odev->mux_bulk_tx_urb);
876 /* Update statistics */
877 net->stats.tx_errors++;
880 /* make a real packet from the received USB buffer */
881 static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt,
882 unsigned int count, unsigned char is_eop)
884 unsigned short temp_bytes;
885 unsigned short buffer_offset = 0;
886 unsigned short frame_len;
887 unsigned char *tmp_rx_buf;
890 D1("Rx %d bytes", count);
891 DUMP(ip_pkt, min(128, (int)count));
894 switch (odev->rx_parse_state) {
896 /* waiting for IP header. */
897 /* wanted bytes - size of ip header */
900 odev->rx_buf_missing) ? count : odev->
903 memcpy(((unsigned char *)(&odev->rx_ip_hdr)) +
904 odev->rx_buf_size, ip_pkt + buffer_offset,
907 odev->rx_buf_size += temp_bytes;
908 buffer_offset += temp_bytes;
909 odev->rx_buf_missing -= temp_bytes;
912 if (!odev->rx_buf_missing) {
913 /* header is complete allocate an sk_buffer and
914 * continue to WAIT_DATA */
915 frame_len = ntohs(odev->rx_ip_hdr.tot_len);
917 if ((frame_len > DEFAULT_MRU) ||
918 (frame_len < sizeof(struct iphdr))) {
919 dev_err(&odev->net->dev,
920 "Invalid frame (%d) length\n",
922 odev->rx_parse_state = WAIT_SYNC;
925 /* Allocate an sk_buff */
926 odev->skb_rx_buf = netdev_alloc_skb(odev->net,
928 if (!odev->skb_rx_buf) {
929 /* We got no receive buffer. */
930 D1("could not allocate memory");
931 odev->rx_parse_state = WAIT_SYNC;
935 /* Copy what we got so far. make room for iphdr
938 skb_put(odev->skb_rx_buf,
939 sizeof(struct iphdr));
940 memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr),
941 sizeof(struct iphdr));
944 odev->rx_buf_size = sizeof(struct iphdr);
946 /* Filip actually use .tot_len */
947 odev->rx_buf_missing =
948 frame_len - sizeof(struct iphdr);
949 odev->rx_parse_state = WAIT_DATA;
954 temp_bytes = (count < odev->rx_buf_missing)
955 ? count : odev->rx_buf_missing;
957 /* Copy the rest of the bytes that are left in the
958 * buffer into the waiting sk_buf. */
959 /* Make room for temp_bytes after tail. */
960 tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes);
961 memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes);
963 odev->rx_buf_missing -= temp_bytes;
965 buffer_offset += temp_bytes;
966 odev->rx_buf_size += temp_bytes;
967 if (!odev->rx_buf_missing) {
968 /* Packet is complete. Inject into stack. */
969 /* We have IP packet here */
970 odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP);
972 odev->skb_rx_buf->ip_summed =
973 CHECKSUM_UNNECESSARY;
975 skb_reset_mac_header(odev->skb_rx_buf);
977 /* Ship it off to the kernel */
978 netif_rx(odev->skb_rx_buf);
979 /* No longer our buffer. */
980 odev->skb_rx_buf = NULL;
982 /* update out statistics */
983 odev->net->stats.rx_packets++;
985 odev->net->stats.rx_bytes += odev->rx_buf_size;
987 odev->rx_buf_size = 0;
988 odev->rx_buf_missing = sizeof(struct iphdr);
989 odev->rx_parse_state = WAIT_IP;
1004 /* Recovery mechanism for WAIT_SYNC state. */
1006 if (odev->rx_parse_state == WAIT_SYNC) {
1007 odev->rx_parse_state = WAIT_IP;
1008 odev->rx_buf_size = 0;
1009 odev->rx_buf_missing = sizeof(struct iphdr);
1014 /* Moving data from usb to kernel (in interrupt state) */
1015 static void read_bulk_callback(struct urb *urb)
1017 struct hso_net *odev = urb->context;
1018 struct net_device *net;
1020 int status = urb->status;
1022 /* is al ok? (Filip: Who's Al ?) */
1024 handle_usb_error(status, __func__, odev->parent);
1029 if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) {
1030 D1("BULK IN callback but driver is not active!");
1033 usb_mark_last_busy(urb->dev);
1037 if (!netif_device_present(net)) {
1038 /* Somebody killed our network interface... */
1042 if (odev->parent->port_spec & HSO_INFO_CRC_BUG) {
1044 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1045 rest = urb->actual_length %
1046 le16_to_cpu(odev->in_endp->wMaxPacketSize);
1047 if (((rest == 5) || (rest == 6)) &&
1048 !memcmp(((u8 *) urb->transfer_buffer) +
1049 urb->actual_length - 4, crc_check, 4)) {
1050 urb->actual_length -= 4;
1054 /* do we even have a packet? */
1055 if (urb->actual_length) {
1056 /* Handle the IP stream, add header and push it onto network
1057 * stack if the packet is complete. */
1058 spin_lock(&odev->net_lock);
1059 packetizeRx(odev, urb->transfer_buffer, urb->actual_length,
1060 (urb->transfer_buffer_length >
1061 urb->actual_length) ? 1 : 0);
1062 spin_unlock(&odev->net_lock);
1065 /* We are done with this URB, resubmit it. Prep the USB to wait for
1066 * another frame. Reuse same as received. */
1067 usb_fill_bulk_urb(urb,
1069 usb_rcvbulkpipe(odev->parent->usb,
1071 bEndpointAddress & 0x7F),
1072 urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE,
1073 read_bulk_callback, odev);
1075 /* Give this to the USB subsystem so it can tell us when more data
1077 result = usb_submit_urb(urb, GFP_ATOMIC);
1079 dev_warn(&odev->parent->interface->dev,
1080 "%s failed submit mux_bulk_rx_urb %d\n", __func__,
1084 /* Serial driver functions */
1086 static void hso_init_termios(struct ktermios *termios)
1089 * The default requirements for this device are:
1092 ~(IGNBRK /* disable ignore break */
1093 | BRKINT /* disable break causes interrupt */
1094 | PARMRK /* disable mark parity errors */
1095 | ISTRIP /* disable clear high bit of input characters */
1096 | INLCR /* disable translate NL to CR */
1097 | IGNCR /* disable ignore CR */
1098 | ICRNL /* disable translate CR to NL */
1099 | IXON); /* disable enable XON/XOFF flow control */
1101 /* disable postprocess output characters */
1102 termios->c_oflag &= ~OPOST;
1105 ~(ECHO /* disable echo input characters */
1106 | ECHONL /* disable echo new line */
1107 | ICANON /* disable erase, kill, werase, and rprnt
1108 special characters */
1109 | ISIG /* disable interrupt, quit, and suspend special
1111 | IEXTEN); /* disable non-POSIX special characters */
1114 ~(CSIZE /* no size */
1115 | PARENB /* disable parity bit */
1116 | CBAUD /* clear current baud rate */
1117 | CBAUDEX); /* clear current buad rate */
1119 termios->c_cflag |= CS8; /* character size 8 bits */
1121 /* baud rate 115200 */
1122 tty_termios_encode_baud_rate(termios, 115200, 115200);
1125 static void _hso_serial_set_termios(struct tty_struct *tty,
1126 struct ktermios *old)
1128 struct hso_serial *serial = get_serial_by_tty(tty);
1129 struct ktermios *termios;
1132 printk(KERN_ERR "%s: no tty structures", __func__);
1136 D4("port %d", serial->minor);
1139 * Fix up unsupported bits
1141 termios = tty->termios;
1142 termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */
1145 ~(CSIZE /* no size */
1146 | PARENB /* disable parity bit */
1147 | CBAUD /* clear current baud rate */
1148 | CBAUDEX); /* clear current buad rate */
1150 termios->c_cflag |= CS8; /* character size 8 bits */
1152 /* baud rate 115200 */
1153 tty_encode_baud_rate(tty, 115200, 115200);
1156 static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb)
1159 /* We are done with this URB, resubmit it. Prep the USB to wait for
1161 usb_fill_bulk_urb(urb, serial->parent->usb,
1162 usb_rcvbulkpipe(serial->parent->usb,
1164 bEndpointAddress & 0x7F),
1165 urb->transfer_buffer, serial->rx_data_length,
1166 hso_std_serial_read_bulk_callback, serial);
1167 /* Give this to the USB subsystem so it can tell us when more data
1169 result = usb_submit_urb(urb, GFP_ATOMIC);
1171 dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n",
1179 static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial)
1182 struct urb *curr_urb;
1184 while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) {
1185 curr_urb = serial->rx_urb[serial->curr_rx_urb_idx];
1186 count = put_rxbuf_data(curr_urb, serial);
1190 serial->curr_rx_urb_idx++;
1191 if (serial->curr_rx_urb_idx >= serial->num_rx_urbs)
1192 serial->curr_rx_urb_idx = 0;
1193 hso_resubmit_rx_bulk_urb(serial, curr_urb);
1198 static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
1203 urb = serial->rx_urb[0];
1204 if (serial->open_count > 0) {
1205 count = put_rxbuf_data(urb, serial);
1209 /* Re issue a read as long as we receive data. */
1211 if (count == 0 && ((urb->actual_length != 0) ||
1212 (serial->rx_state == RX_PENDING))) {
1213 serial->rx_state = RX_SENT;
1214 hso_mux_serial_read(serial);
1216 serial->rx_state = RX_IDLE;
1220 /* read callback for Diag and CS port */
1221 static void hso_std_serial_read_bulk_callback(struct urb *urb)
1223 struct hso_serial *serial = urb->context;
1224 int status = urb->status;
1228 D1("serial == NULL");
1230 } else if (status) {
1231 handle_usb_error(status, __func__, serial->parent);
1235 D4("\n--- Got serial_read_bulk callback %02x ---", status);
1236 D1("Actual length = %d\n", urb->actual_length);
1237 DUMP1(urb->transfer_buffer, urb->actual_length);
1239 /* Anyone listening? */
1240 if (serial->open_count == 0)
1244 if (serial->parent->port_spec & HSO_INFO_CRC_BUG) {
1246 u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
1248 urb->actual_length %
1249 le16_to_cpu(serial->in_endp->wMaxPacketSize);
1250 if (((rest == 5) || (rest == 6)) &&
1251 !memcmp(((u8 *) urb->transfer_buffer) +
1252 urb->actual_length - 4, crc_check, 4)) {
1253 urb->actual_length -= 4;
1256 /* Valid data, handle RX data */
1257 spin_lock(&serial->serial_lock);
1258 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1;
1259 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1260 spin_unlock(&serial->serial_lock);
1261 } else if (status == -ENOENT || status == -ECONNRESET) {
1262 /* Unlinked - check for throttled port. */
1263 D2("Port %d, successfully unlinked urb", serial->minor);
1264 spin_lock(&serial->serial_lock);
1265 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
1266 hso_resubmit_rx_bulk_urb(serial, urb);
1267 spin_unlock(&serial->serial_lock);
1269 D2("Port %d, status = %d for read urb", serial->minor, status);
1275 * This needs to be a tasklet otherwise we will
1276 * end up recursively calling this function.
1278 static void hso_unthrottle_tasklet(struct hso_serial *serial)
1280 unsigned long flags;
1282 spin_lock_irqsave(&serial->serial_lock, flags);
1283 if ((serial->parent->port_spec & HSO_INTF_MUX))
1284 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
1286 put_rxbuf_data_and_resubmit_bulk_urb(serial);
1287 spin_unlock_irqrestore(&serial->serial_lock, flags);
1290 static void hso_unthrottle(struct tty_struct *tty)
1292 struct hso_serial *serial = get_serial_by_tty(tty);
1294 tasklet_hi_schedule(&serial->unthrottle_tasklet);
1297 static void hso_unthrottle_workfunc(struct work_struct *work)
1299 struct hso_serial *serial =
1300 container_of(work, struct hso_serial,
1301 retry_unthrottle_workqueue);
1302 hso_unthrottle_tasklet(serial);
1305 /* open the requested serial port */
1306 static int hso_serial_open(struct tty_struct *tty, struct file *filp)
1308 struct hso_serial *serial = get_serial_by_index(tty->index);
1312 if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) {
1314 tty->driver_data = NULL;
1315 D1("Failed to open port");
1319 mutex_lock(&serial->parent->mutex);
1320 result = usb_autopm_get_interface(serial->parent->interface);
1324 D1("Opening %d", serial->minor);
1325 kref_get(&serial->parent->ref);
1328 spin_lock_irq(&serial->serial_lock);
1329 tty->driver_data = serial;
1330 tty_kref_put(serial->tty);
1331 serial->tty = tty_kref_get(tty);
1332 spin_unlock_irq(&serial->serial_lock);
1334 /* check for port already opened, if not set the termios */
1335 serial->open_count++;
1336 if (serial->open_count == 1) {
1337 tty->low_latency = 1;
1338 serial->rx_state = RX_IDLE;
1339 /* Force default termio settings */
1340 _hso_serial_set_termios(tty, NULL);
1341 tasklet_init(&serial->unthrottle_tasklet,
1342 (void (*)(unsigned long))hso_unthrottle_tasklet,
1343 (unsigned long)serial);
1344 INIT_WORK(&serial->retry_unthrottle_workqueue,
1345 hso_unthrottle_workfunc);
1346 result = hso_start_serial_device(serial->parent, GFP_KERNEL);
1348 hso_stop_serial_device(serial->parent);
1349 serial->open_count--;
1350 kref_put(&serial->parent->ref, hso_serial_ref_free);
1353 D1("Port was already open");
1356 usb_autopm_put_interface(serial->parent->interface);
1360 hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0);
1362 mutex_unlock(&serial->parent->mutex);
1366 /* close the requested serial port */
1367 static void hso_serial_close(struct tty_struct *tty, struct file *filp)
1369 struct hso_serial *serial = tty->driver_data;
1372 D1("Closing serial port");
1374 /* Open failed, no close cleanup required */
1378 mutex_lock(&serial->parent->mutex);
1379 usb_gone = serial->parent->usb_gone;
1382 usb_autopm_get_interface(serial->parent->interface);
1384 /* reset the rts and dtr */
1385 /* do the actual close */
1386 serial->open_count--;
1388 if (serial->open_count <= 0) {
1389 serial->open_count = 0;
1390 spin_lock_irq(&serial->serial_lock);
1391 if (serial->tty == tty) {
1392 serial->tty->driver_data = NULL;
1396 spin_unlock_irq(&serial->serial_lock);
1398 hso_stop_serial_device(serial->parent);
1399 tasklet_kill(&serial->unthrottle_tasklet);
1400 cancel_work_sync(&serial->retry_unthrottle_workqueue);
1404 usb_autopm_put_interface(serial->parent->interface);
1406 mutex_unlock(&serial->parent->mutex);
1408 kref_put(&serial->parent->ref, hso_serial_ref_free);
1411 /* close the requested serial port */
1412 static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf,
1415 struct hso_serial *serial = get_serial_by_tty(tty);
1416 int space, tx_bytes;
1417 unsigned long flags;
1420 if (serial == NULL) {
1421 printk(KERN_ERR "%s: serial is NULL\n", __func__);
1425 spin_lock_irqsave(&serial->serial_lock, flags);
1427 space = serial->tx_data_length - serial->tx_buffer_count;
1428 tx_bytes = (count < space) ? count : space;
1433 memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes);
1434 serial->tx_buffer_count += tx_bytes;
1437 spin_unlock_irqrestore(&serial->serial_lock, flags);
1439 hso_kick_transmit(serial);
1444 /* how much room is there for writing */
1445 static int hso_serial_write_room(struct tty_struct *tty)
1447 struct hso_serial *serial = get_serial_by_tty(tty);
1449 unsigned long flags;
1451 spin_lock_irqsave(&serial->serial_lock, flags);
1452 room = serial->tx_data_length - serial->tx_buffer_count;
1453 spin_unlock_irqrestore(&serial->serial_lock, flags);
1455 /* return free room */
1459 /* setup the term */
1460 static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
1462 struct hso_serial *serial = get_serial_by_tty(tty);
1463 unsigned long flags;
1466 D5("Termios called with: cflags new[%d] - old[%d]",
1467 tty->termios->c_cflag, old->c_cflag);
1469 /* the actual setup */
1470 spin_lock_irqsave(&serial->serial_lock, flags);
1471 if (serial->open_count)
1472 _hso_serial_set_termios(tty, old);
1475 spin_unlock_irqrestore(&serial->serial_lock, flags);
1480 /* how many characters in the buffer */
1481 static int hso_serial_chars_in_buffer(struct tty_struct *tty)
1483 struct hso_serial *serial = get_serial_by_tty(tty);
1485 unsigned long flags;
1491 spin_lock_irqsave(&serial->serial_lock, flags);
1492 chars = serial->tx_buffer_count;
1493 spin_unlock_irqrestore(&serial->serial_lock, flags);
1497 static int tiocmget_submit_urb(struct hso_serial *serial,
1498 struct hso_tiocmget *tiocmget,
1499 struct usb_device *usb)
1503 if (serial->parent->usb_gone)
1505 usb_fill_int_urb(tiocmget->urb, usb,
1508 bEndpointAddress & 0x7F),
1509 &tiocmget->serial_state_notification,
1510 sizeof(struct hso_serial_state_notification),
1511 tiocmget_intr_callback, serial,
1512 tiocmget->endp->bInterval);
1513 result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC);
1515 dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__,
1522 static void tiocmget_intr_callback(struct urb *urb)
1524 struct hso_serial *serial = urb->context;
1525 struct hso_tiocmget *tiocmget;
1526 int status = urb->status;
1527 u16 UART_state_bitmap, prev_UART_state_bitmap;
1528 struct uart_icount *icount;
1529 struct hso_serial_state_notification *serial_state_notification;
1530 struct usb_device *usb;
1536 handle_usb_error(status, __func__, serial->parent);
1539 tiocmget = serial->tiocmget;
1542 usb = serial->parent->usb;
1543 serial_state_notification = &tiocmget->serial_state_notification;
1544 if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE ||
1545 serial_state_notification->bNotification != B_NOTIFICATION ||
1546 le16_to_cpu(serial_state_notification->wValue) != W_VALUE ||
1547 le16_to_cpu(serial_state_notification->wIndex) != W_INDEX ||
1548 le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) {
1550 "hso received invalid serial state notification\n");
1551 DUMP(serial_state_notification,
1552 sizeof(struct hso_serial_state_notification));
1555 UART_state_bitmap = le16_to_cpu(serial_state_notification->
1557 prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap;
1558 icount = &tiocmget->icount;
1559 spin_lock(&serial->serial_lock);
1560 if ((UART_state_bitmap & B_OVERRUN) !=
1561 (prev_UART_state_bitmap & B_OVERRUN))
1563 if ((UART_state_bitmap & B_PARITY) !=
1564 (prev_UART_state_bitmap & B_PARITY))
1566 if ((UART_state_bitmap & B_FRAMING) !=
1567 (prev_UART_state_bitmap & B_FRAMING))
1569 if ((UART_state_bitmap & B_RING_SIGNAL) &&
1570 !(prev_UART_state_bitmap & B_RING_SIGNAL))
1572 if ((UART_state_bitmap & B_BREAK) !=
1573 (prev_UART_state_bitmap & B_BREAK))
1575 if ((UART_state_bitmap & B_TX_CARRIER) !=
1576 (prev_UART_state_bitmap & B_TX_CARRIER))
1578 if ((UART_state_bitmap & B_RX_CARRIER) !=
1579 (prev_UART_state_bitmap & B_RX_CARRIER))
1581 tiocmget->prev_UART_state_bitmap = UART_state_bitmap;
1582 spin_unlock(&serial->serial_lock);
1583 tiocmget->intr_completed = 1;
1584 wake_up_interruptible(&tiocmget->waitq);
1586 memset(serial_state_notification, 0,
1587 sizeof(struct hso_serial_state_notification));
1588 tiocmget_submit_urb(serial,
1590 serial->parent->usb);
1594 * next few functions largely stolen from drivers/serial/serial_core.c
1596 /* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1597 * - mask passed in arg for lines of interest
1598 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1599 * Caller should use TIOCGICOUNT to see which one it was
1602 hso_wait_modem_status(struct hso_serial *serial, unsigned long arg)
1604 DECLARE_WAITQUEUE(wait, current);
1605 struct uart_icount cprev, cnow;
1606 struct hso_tiocmget *tiocmget;
1609 tiocmget = serial->tiocmget;
1613 * note the counters on entry
1615 spin_lock_irq(&serial->serial_lock);
1616 memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount));
1617 spin_unlock_irq(&serial->serial_lock);
1618 add_wait_queue(&tiocmget->waitq, &wait);
1620 spin_lock_irq(&serial->serial_lock);
1621 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1622 spin_unlock_irq(&serial->serial_lock);
1623 set_current_state(TASK_INTERRUPTIBLE);
1624 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1625 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1626 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) {
1631 /* see if a signal did it */
1632 if (signal_pending(current)) {
1638 current->state = TASK_RUNNING;
1639 remove_wait_queue(&tiocmget->waitq, &wait);
1645 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
1646 * Return: write counters to the user passed counter struct
1647 * NB: both 1->0 and 0->1 transitions are counted except for
1648 * RI where only 0->1 is counted.
1650 static int hso_get_count(struct hso_serial *serial,
1651 struct serial_icounter_struct __user *icnt)
1653 struct serial_icounter_struct icount;
1654 struct uart_icount cnow;
1655 struct hso_tiocmget *tiocmget = serial->tiocmget;
1659 spin_lock_irq(&serial->serial_lock);
1660 memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
1661 spin_unlock_irq(&serial->serial_lock);
1663 icount.cts = cnow.cts;
1664 icount.dsr = cnow.dsr;
1665 icount.rng = cnow.rng;
1666 icount.dcd = cnow.dcd;
1667 icount.rx = cnow.rx;
1668 icount.tx = cnow.tx;
1669 icount.frame = cnow.frame;
1670 icount.overrun = cnow.overrun;
1671 icount.parity = cnow.parity;
1672 icount.brk = cnow.brk;
1673 icount.buf_overrun = cnow.buf_overrun;
1675 return copy_to_user(icnt, &icount, sizeof(icount)) ? -EFAULT : 0;
1679 static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file)
1682 struct hso_serial *serial = get_serial_by_tty(tty);
1683 struct hso_tiocmget *tiocmget;
1684 u16 UART_state_bitmap;
1688 D1("no tty structures");
1691 spin_lock_irq(&serial->serial_lock);
1692 retval = ((serial->rts_state) ? TIOCM_RTS : 0) |
1693 ((serial->dtr_state) ? TIOCM_DTR : 0);
1694 tiocmget = serial->tiocmget;
1697 UART_state_bitmap = le16_to_cpu(
1698 tiocmget->prev_UART_state_bitmap);
1699 if (UART_state_bitmap & B_RING_SIGNAL)
1700 retval |= TIOCM_RNG;
1701 if (UART_state_bitmap & B_RX_CARRIER)
1703 if (UART_state_bitmap & B_TX_CARRIER)
1704 retval |= TIOCM_DSR;
1706 spin_unlock_irq(&serial->serial_lock);
1710 static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
1711 unsigned int set, unsigned int clear)
1714 unsigned long flags;
1716 struct hso_serial *serial = get_serial_by_tty(tty);
1720 D1("no tty structures");
1724 if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM)
1727 if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber;
1729 spin_lock_irqsave(&serial->serial_lock, flags);
1730 if (set & TIOCM_RTS)
1731 serial->rts_state = 1;
1732 if (set & TIOCM_DTR)
1733 serial->dtr_state = 1;
1735 if (clear & TIOCM_RTS)
1736 serial->rts_state = 0;
1737 if (clear & TIOCM_DTR)
1738 serial->dtr_state = 0;
1740 if (serial->dtr_state)
1742 if (serial->rts_state)
1745 spin_unlock_irqrestore(&serial->serial_lock, flags);
1747 return usb_control_msg(serial->parent->usb,
1748 usb_rcvctrlpipe(serial->parent->usb, 0), 0x22,
1749 0x21, val, if_num, NULL, 0,
1750 USB_CTRL_SET_TIMEOUT);
1753 static int hso_serial_ioctl(struct tty_struct *tty, struct file *file,
1754 unsigned int cmd, unsigned long arg)
1756 struct hso_serial *serial = get_serial_by_tty(tty);
1757 void __user *uarg = (void __user *)arg;
1759 D4("IOCTL cmd: %d, arg: %ld", cmd, arg);
1765 ret = hso_wait_modem_status(serial, arg);
1769 ret = hso_get_count(serial, uarg);
1779 /* starts a transmit */
1780 static void hso_kick_transmit(struct hso_serial *serial)
1783 unsigned long flags;
1786 spin_lock_irqsave(&serial->serial_lock, flags);
1787 if (!serial->tx_buffer_count)
1790 if (serial->tx_urb_used)
1793 /* Wakeup USB interface if necessary */
1794 if (hso_get_activity(serial->parent) == -EAGAIN)
1797 /* Switch pointers around to avoid memcpy */
1798 temp = serial->tx_buffer;
1799 serial->tx_buffer = serial->tx_data;
1800 serial->tx_data = temp;
1801 serial->tx_data_count = serial->tx_buffer_count;
1802 serial->tx_buffer_count = 0;
1804 /* If temp is set, it means we switched buffers */
1805 if (temp && serial->write_data) {
1806 res = serial->write_data(serial);
1808 serial->tx_urb_used = 1;
1811 spin_unlock_irqrestore(&serial->serial_lock, flags);
1814 /* make a request (for reading and writing data to muxed serial port) */
1815 static int mux_device_request(struct hso_serial *serial, u8 type, u16 port,
1816 struct urb *ctrl_urb,
1817 struct usb_ctrlrequest *ctrl_req,
1818 u8 *ctrl_urb_data, u32 size)
1824 if (!serial || !ctrl_urb || !ctrl_req) {
1825 printk(KERN_ERR "%s: Wrong arguments\n", __func__);
1830 ctrl_req->wValue = 0;
1831 ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port));
1832 ctrl_req->wLength = cpu_to_le16(size);
1834 if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) {
1835 /* Reading command */
1836 ctrl_req->bRequestType = USB_DIR_IN |
1837 USB_TYPE_OPTION_VENDOR |
1838 USB_RECIP_INTERFACE;
1839 ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
1840 pipe = usb_rcvctrlpipe(serial->parent->usb, 0);
1842 /* Writing command */
1843 ctrl_req->bRequestType = USB_DIR_OUT |
1844 USB_TYPE_OPTION_VENDOR |
1845 USB_RECIP_INTERFACE;
1846 ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND;
1847 pipe = usb_sndctrlpipe(serial->parent->usb, 0);
1850 D2("%s command (%02x) len: %d, port: %d",
1851 type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write",
1852 ctrl_req->bRequestType, ctrl_req->wLength, port);
1855 ctrl_urb->transfer_flags = 0;
1856 usb_fill_control_urb(ctrl_urb,
1857 serial->parent->usb,
1860 ctrl_urb_data, size, ctrl_callback, serial);
1861 /* Send it on merry way */
1862 result = usb_submit_urb(ctrl_urb, GFP_ATOMIC);
1864 dev_err(&ctrl_urb->dev->dev,
1865 "%s failed submit ctrl_urb %d type %d\n", __func__,
1874 /* called by intr_callback when read occurs */
1875 static int hso_mux_serial_read(struct hso_serial *serial)
1881 memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE);
1882 /* make the request */
1884 if (serial->num_rx_urbs != 1) {
1885 dev_err(&serial->parent->interface->dev,
1886 "ERROR: mux'd reads with multiple buffers "
1890 return mux_device_request(serial,
1891 USB_CDC_GET_ENCAPSULATED_RESPONSE,
1892 serial->parent->port_spec & HSO_PORT_MASK,
1894 &serial->ctrl_req_rx,
1895 serial->rx_data[0], serial->rx_data_length);
1898 /* used for muxed serial port callback (muxed serial read) */
1899 static void intr_callback(struct urb *urb)
1901 struct hso_shared_int *shared_int = urb->context;
1902 struct hso_serial *serial;
1903 unsigned char *port_req;
1904 int status = urb->status;
1907 usb_mark_last_busy(urb->dev);
1915 handle_usb_error(status, __func__, NULL);
1918 D4("\n--- Got intr callback 0x%02X ---", status);
1921 port_req = urb->transfer_buffer;
1922 D4(" port_req = 0x%.2X\n", *port_req);
1923 /* loop over all muxed ports to find the one sending this */
1924 for (i = 0; i < 8; i++) {
1925 /* max 8 channels on MUX */
1926 if (*port_req & (1 << i)) {
1927 serial = get_serial_by_shared_int_and_type(shared_int,
1929 if (serial != NULL) {
1930 D1("Pending read interrupt on port %d\n", i);
1931 spin_lock(&serial->serial_lock);
1932 if (serial->rx_state == RX_IDLE &&
1933 serial->open_count > 0) {
1934 /* Setup and send a ctrl req read on
1936 if (!serial->rx_urb_filled[0]) {
1937 serial->rx_state = RX_SENT;
1938 hso_mux_serial_read(serial);
1940 serial->rx_state = RX_PENDING;
1942 D1("Already a read pending on "
1943 "port %d or port not open\n", i);
1945 spin_unlock(&serial->serial_lock);
1949 /* Resubmit interrupt urb */
1950 hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC);
1953 /* called for writing to muxed serial port */
1954 static int hso_mux_serial_write_data(struct hso_serial *serial)
1959 return mux_device_request(serial,
1960 USB_CDC_SEND_ENCAPSULATED_COMMAND,
1961 serial->parent->port_spec & HSO_PORT_MASK,
1963 &serial->ctrl_req_tx,
1964 serial->tx_data, serial->tx_data_count);
1967 /* write callback for Diag and CS port */
1968 static void hso_std_serial_write_bulk_callback(struct urb *urb)
1970 struct hso_serial *serial = urb->context;
1971 int status = urb->status;
1972 struct tty_struct *tty;
1976 D1("serial == NULL");
1980 spin_lock(&serial->serial_lock);
1981 serial->tx_urb_used = 0;
1982 tty = tty_kref_get(serial->tty);
1983 spin_unlock(&serial->serial_lock);
1985 handle_usb_error(status, __func__, serial->parent);
1989 hso_put_activity(serial->parent);
1994 hso_kick_transmit(serial);
1999 /* called for writing diag or CS serial port */
2000 static int hso_std_serial_write_data(struct hso_serial *serial)
2002 int count = serial->tx_data_count;
2005 usb_fill_bulk_urb(serial->tx_urb,
2006 serial->parent->usb,
2007 usb_sndbulkpipe(serial->parent->usb,
2009 bEndpointAddress & 0x7F),
2010 serial->tx_data, serial->tx_data_count,
2011 hso_std_serial_write_bulk_callback, serial);
2013 result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC);
2015 dev_warn(&serial->parent->usb->dev,
2016 "Failed to submit urb - res %d\n", result);
2023 /* callback after read or write on muxed serial port */
2024 static void ctrl_callback(struct urb *urb)
2026 struct hso_serial *serial = urb->context;
2027 struct usb_ctrlrequest *req;
2028 int status = urb->status;
2029 struct tty_struct *tty;
2035 spin_lock(&serial->serial_lock);
2036 serial->tx_urb_used = 0;
2037 tty = tty_kref_get(serial->tty);
2038 spin_unlock(&serial->serial_lock);
2040 handle_usb_error(status, __func__, serial->parent);
2046 req = (struct usb_ctrlrequest *)(urb->setup_packet);
2047 D4("\n--- Got muxed ctrl callback 0x%02X ---", status);
2048 D4("Actual length of urb = %d\n", urb->actual_length);
2049 DUMP1(urb->transfer_buffer, urb->actual_length);
2051 if (req->bRequestType ==
2052 (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) {
2053 /* response to a read command */
2054 serial->rx_urb_filled[0] = 1;
2055 spin_lock(&serial->serial_lock);
2056 put_rxbuf_data_and_resubmit_ctrl_urb(serial);
2057 spin_unlock(&serial->serial_lock);
2059 hso_put_activity(serial->parent);
2062 /* response to a write command */
2063 hso_kick_transmit(serial);
2068 /* handle RX data for serial port */
2069 static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
2071 struct tty_struct *tty;
2072 int write_length_remaining = 0;
2076 if (urb == NULL || serial == NULL) {
2077 D1("serial = NULL");
2081 /* All callers to put_rxbuf_data hold serial_lock */
2082 tty = tty_kref_get(serial->tty);
2084 /* Push data to tty */
2086 write_length_remaining = urb->actual_length -
2087 serial->curr_rx_urb_offset;
2088 D1("data to push to tty");
2089 while (write_length_remaining) {
2090 if (test_bit(TTY_THROTTLED, &tty->flags)) {
2094 curr_write_len = tty_insert_flip_string
2095 (tty, urb->transfer_buffer +
2096 serial->curr_rx_urb_offset,
2097 write_length_remaining);
2098 serial->curr_rx_urb_offset += curr_write_len;
2099 write_length_remaining -= curr_write_len;
2100 tty_flip_buffer_push(tty);
2103 if (write_length_remaining == 0) {
2104 serial->curr_rx_urb_offset = 0;
2105 serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
2108 return write_length_remaining;
2112 /* Base driver functions */
2114 static void hso_log_port(struct hso_device *hso_dev)
2119 switch (hso_dev->port_spec & HSO_PORT_MASK) {
2120 case HSO_PORT_CONTROL:
2121 port_type = "Control";
2124 port_type = "Application";
2129 case HSO_PORT_GPS_CONTROL:
2130 port_type = "GPS control";
2133 port_type = "Application2";
2139 port_type = "Diagnostic";
2141 case HSO_PORT_DIAG2:
2142 port_type = "Diagnostic2";
2144 case HSO_PORT_MODEM:
2145 port_type = "Modem";
2147 case HSO_PORT_NETWORK:
2148 port_type = "Network";
2151 port_type = "Unknown";
2154 if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2155 sprintf(port_dev, "%s", dev2net(hso_dev)->net->name);
2157 sprintf(port_dev, "/dev/%s%d", tty_filename,
2158 dev2ser(hso_dev)->minor);
2160 dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n",
2161 port_type, port_dev);
2164 static int hso_start_net_device(struct hso_device *hso_dev)
2167 struct hso_net *hso_net = dev2net(hso_dev);
2172 /* send URBs for all read buffers */
2173 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2175 /* Prep a receive URB */
2176 usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i],
2178 usb_rcvbulkpipe(hso_dev->usb,
2180 bEndpointAddress & 0x7F),
2181 hso_net->mux_bulk_rx_buf_pool[i],
2182 MUX_BULK_RX_BUF_SIZE, read_bulk_callback,
2185 /* Put it out there so the device can send us stuff */
2186 result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i],
2189 dev_warn(&hso_dev->usb->dev,
2190 "%s failed mux_bulk_rx_urb[%d] %d\n", __func__,
2197 static int hso_stop_net_device(struct hso_device *hso_dev)
2200 struct hso_net *hso_net = dev2net(hso_dev);
2205 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2206 if (hso_net->mux_bulk_rx_urb_pool[i])
2207 usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2210 if (hso_net->mux_bulk_tx_urb)
2211 usb_kill_urb(hso_net->mux_bulk_tx_urb);
2216 static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags)
2219 struct hso_serial *serial = dev2ser(hso_dev);
2224 /* If it is not the MUX port fill in and submit a bulk urb (already
2225 * allocated in hso_serial_start) */
2226 if (!(serial->parent->port_spec & HSO_INTF_MUX)) {
2227 for (i = 0; i < serial->num_rx_urbs; i++) {
2228 usb_fill_bulk_urb(serial->rx_urb[i],
2229 serial->parent->usb,
2230 usb_rcvbulkpipe(serial->parent->usb,
2235 serial->rx_data_length,
2236 hso_std_serial_read_bulk_callback,
2238 result = usb_submit_urb(serial->rx_urb[i], flags);
2240 dev_warn(&serial->parent->usb->dev,
2241 "Failed to submit urb - res %d\n",
2247 mutex_lock(&serial->shared_int->shared_int_lock);
2248 if (!serial->shared_int->use_count) {
2250 hso_mux_submit_intr_urb(serial->shared_int,
2251 hso_dev->usb, flags);
2253 serial->shared_int->use_count++;
2254 mutex_unlock(&serial->shared_int->shared_int_lock);
2256 if (serial->tiocmget)
2257 tiocmget_submit_urb(serial,
2259 serial->parent->usb);
2263 static int hso_stop_serial_device(struct hso_device *hso_dev)
2266 struct hso_serial *serial = dev2ser(hso_dev);
2267 struct hso_tiocmget *tiocmget;
2272 for (i = 0; i < serial->num_rx_urbs; i++) {
2273 if (serial->rx_urb[i]) {
2274 usb_kill_urb(serial->rx_urb[i]);
2275 serial->rx_urb_filled[i] = 0;
2278 serial->curr_rx_urb_idx = 0;
2279 serial->curr_rx_urb_offset = 0;
2282 usb_kill_urb(serial->tx_urb);
2284 if (serial->shared_int) {
2285 mutex_lock(&serial->shared_int->shared_int_lock);
2286 if (serial->shared_int->use_count &&
2287 (--serial->shared_int->use_count == 0)) {
2290 urb = serial->shared_int->shared_intr_urb;
2294 mutex_unlock(&serial->shared_int->shared_int_lock);
2296 tiocmget = serial->tiocmget;
2298 wake_up_interruptible(&tiocmget->waitq);
2299 usb_kill_urb(tiocmget->urb);
2305 static void hso_serial_common_free(struct hso_serial *serial)
2309 if (serial->parent->dev)
2310 device_remove_file(serial->parent->dev, &dev_attr_hsotype);
2312 tty_unregister_device(tty_drv, serial->minor);
2314 for (i = 0; i < serial->num_rx_urbs; i++) {
2315 /* unlink and free RX URB */
2316 usb_free_urb(serial->rx_urb[i]);
2317 /* free the RX buffer */
2318 kfree(serial->rx_data[i]);
2321 /* unlink and free TX URB */
2322 usb_free_urb(serial->tx_urb);
2323 kfree(serial->tx_data);
2326 static int hso_serial_common_create(struct hso_serial *serial, int num_urbs,
2327 int rx_size, int tx_size)
2333 minor = get_free_serial_index();
2337 /* register our minor number */
2338 serial->parent->dev = tty_register_device(tty_drv, minor,
2339 &serial->parent->interface->dev);
2340 dev = serial->parent->dev;
2341 dev_set_drvdata(dev, serial->parent);
2342 i = device_create_file(dev, &dev_attr_hsotype);
2344 /* fill in specific data for later use */
2345 serial->minor = minor;
2346 serial->magic = HSO_SERIAL_MAGIC;
2347 spin_lock_init(&serial->serial_lock);
2348 serial->num_rx_urbs = num_urbs;
2350 /* RX, allocate urb and initialize */
2352 /* prepare our RX buffer */
2353 serial->rx_data_length = rx_size;
2354 for (i = 0; i < serial->num_rx_urbs; i++) {
2355 serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
2356 if (!serial->rx_urb[i]) {
2357 dev_err(dev, "Could not allocate urb?\n");
2360 serial->rx_urb[i]->transfer_buffer = NULL;
2361 serial->rx_urb[i]->transfer_buffer_length = 0;
2362 serial->rx_data[i] = kzalloc(serial->rx_data_length,
2364 if (!serial->rx_data[i]) {
2365 dev_err(dev, "%s - Out of memory\n", __func__);
2370 /* TX, allocate urb and initialize */
2371 serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2372 if (!serial->tx_urb) {
2373 dev_err(dev, "Could not allocate urb?\n");
2376 serial->tx_urb->transfer_buffer = NULL;
2377 serial->tx_urb->transfer_buffer_length = 0;
2378 /* prepare our TX buffer */
2379 serial->tx_data_count = 0;
2380 serial->tx_buffer_count = 0;
2381 serial->tx_data_length = tx_size;
2382 serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL);
2383 if (!serial->tx_data) {
2384 dev_err(dev, "%s - Out of memory\n", __func__);
2387 serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL);
2388 if (!serial->tx_buffer) {
2389 dev_err(dev, "%s - Out of memory\n", __func__);
2395 hso_serial_common_free(serial);
2399 /* Creates a general hso device */
2400 static struct hso_device *hso_create_device(struct usb_interface *intf,
2403 struct hso_device *hso_dev;
2405 hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC);
2409 hso_dev->port_spec = port_spec;
2410 hso_dev->usb = interface_to_usbdev(intf);
2411 hso_dev->interface = intf;
2412 kref_init(&hso_dev->ref);
2413 mutex_init(&hso_dev->mutex);
2415 INIT_WORK(&hso_dev->async_get_intf, async_get_intf);
2416 INIT_WORK(&hso_dev->async_put_intf, async_put_intf);
2417 INIT_WORK(&hso_dev->reset_device, reset_device);
2422 /* Removes a network device in the network device table */
2423 static int remove_net_device(struct hso_device *hso_dev)
2427 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2428 if (network_table[i] == hso_dev) {
2429 network_table[i] = NULL;
2433 if (i == HSO_MAX_NET_DEVICES)
2438 /* Frees our network device */
2439 static void hso_free_net_device(struct hso_device *hso_dev)
2442 struct hso_net *hso_net = dev2net(hso_dev);
2447 remove_net_device(hso_net->parent);
2450 unregister_netdev(hso_net->net);
2451 free_netdev(hso_net->net);
2455 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2456 usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]);
2457 kfree(hso_net->mux_bulk_rx_buf_pool[i]);
2458 hso_net->mux_bulk_rx_buf_pool[i] = NULL;
2460 usb_free_urb(hso_net->mux_bulk_tx_urb);
2461 kfree(hso_net->mux_bulk_tx_buf);
2462 hso_net->mux_bulk_tx_buf = NULL;
2467 static const struct net_device_ops hso_netdev_ops = {
2468 .ndo_open = hso_net_open,
2469 .ndo_stop = hso_net_close,
2470 .ndo_start_xmit = hso_net_start_xmit,
2471 .ndo_tx_timeout = hso_net_tx_timeout,
2474 /* initialize the network interface */
2475 static void hso_net_init(struct net_device *net)
2477 struct hso_net *hso_net = netdev_priv(net);
2479 D1("sizeof hso_net is %d", (int)sizeof(*hso_net));
2481 /* fill in the other fields */
2482 net->netdev_ops = &hso_netdev_ops;
2483 net->watchdog_timeo = HSO_NET_TX_TIMEOUT;
2484 net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
2485 net->type = ARPHRD_NONE;
2486 net->mtu = DEFAULT_MTU - 14;
2487 net->tx_queue_len = 10;
2488 SET_ETHTOOL_OPS(net, &ops);
2490 /* and initialize the semaphore */
2491 spin_lock_init(&hso_net->net_lock);
2494 /* Adds a network device in the network device table */
2495 static int add_net_device(struct hso_device *hso_dev)
2499 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
2500 if (network_table[i] == NULL) {
2501 network_table[i] = hso_dev;
2505 if (i == HSO_MAX_NET_DEVICES)
2510 static int hso_rfkill_set_block(void *data, bool blocked)
2512 struct hso_device *hso_dev = data;
2513 int enabled = !blocked;
2516 mutex_lock(&hso_dev->mutex);
2517 if (hso_dev->usb_gone)
2520 rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0),
2521 enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0,
2522 USB_CTRL_SET_TIMEOUT);
2523 mutex_unlock(&hso_dev->mutex);
2527 static const struct rfkill_ops hso_rfkill_ops = {
2528 .set_block = hso_rfkill_set_block,
2531 /* Creates and sets up everything for rfkill */
2532 static void hso_create_rfkill(struct hso_device *hso_dev,
2533 struct usb_interface *interface)
2535 struct hso_net *hso_net = dev2net(hso_dev);
2536 struct device *dev = &hso_net->net->dev;
2539 rfkn = kzalloc(20, GFP_KERNEL);
2541 dev_err(dev, "%s - Out of memory\n", __func__);
2543 snprintf(rfkn, 20, "hso-%d",
2544 interface->altsetting->desc.bInterfaceNumber);
2546 hso_net->rfkill = rfkill_alloc(rfkn,
2547 &interface_to_usbdev(interface)->dev,
2549 &hso_rfkill_ops, hso_dev);
2550 if (!hso_net->rfkill) {
2551 dev_err(dev, "%s - Out of memory\n", __func__);
2555 if (rfkill_register(hso_net->rfkill) < 0) {
2556 rfkill_destroy(hso_net->rfkill);
2558 hso_net->rfkill = NULL;
2559 dev_err(dev, "%s - Failed to register rfkill\n", __func__);
2564 static struct device_type hso_type = {
2568 /* Creates our network device */
2569 static struct hso_device *hso_create_net_device(struct usb_interface *interface,
2573 struct net_device *net;
2574 struct hso_net *hso_net;
2575 struct hso_device *hso_dev;
2577 hso_dev = hso_create_device(interface, port_spec);
2581 /* allocate our network device, then we can put in our private data */
2582 /* call hso_net_init to do the basic initialization */
2583 net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init);
2585 dev_err(&interface->dev, "Unable to create ethernet device\n");
2589 hso_net = netdev_priv(net);
2591 hso_dev->port_data.dev_net = hso_net;
2593 hso_net->parent = hso_dev;
2595 hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2597 if (!hso_net->in_endp) {
2598 dev_err(&interface->dev, "Can't find BULK IN endpoint\n");
2601 hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2603 if (!hso_net->out_endp) {
2604 dev_err(&interface->dev, "Can't find BULK OUT endpoint\n");
2607 SET_NETDEV_DEV(net, &interface->dev);
2608 SET_NETDEV_DEVTYPE(net, &hso_type);
2610 /* registering our net device */
2611 result = register_netdev(net);
2613 dev_err(&interface->dev, "Failed to register device\n");
2617 /* start allocating */
2618 for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) {
2619 hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL);
2620 if (!hso_net->mux_bulk_rx_urb_pool[i]) {
2621 dev_err(&interface->dev, "Could not allocate rx urb\n");
2624 hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE,
2626 if (!hso_net->mux_bulk_rx_buf_pool[i]) {
2627 dev_err(&interface->dev, "Could not allocate rx buf\n");
2631 hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2632 if (!hso_net->mux_bulk_tx_urb) {
2633 dev_err(&interface->dev, "Could not allocate tx urb\n");
2636 hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL);
2637 if (!hso_net->mux_bulk_tx_buf) {
2638 dev_err(&interface->dev, "Could not allocate tx buf\n");
2642 add_net_device(hso_dev);
2644 hso_log_port(hso_dev);
2646 hso_create_rfkill(hso_dev, interface);
2650 hso_free_net_device(hso_dev);
2654 static void hso_free_tiomget(struct hso_serial *serial)
2656 struct hso_tiocmget *tiocmget = serial->tiocmget;
2658 if (tiocmget->urb) {
2659 usb_free_urb(tiocmget->urb);
2660 tiocmget->urb = NULL;
2662 serial->tiocmget = NULL;
2668 /* Frees an AT channel ( goes for both mux and non-mux ) */
2669 static void hso_free_serial_device(struct hso_device *hso_dev)
2671 struct hso_serial *serial = dev2ser(hso_dev);
2675 set_serial_by_index(serial->minor, NULL);
2677 hso_serial_common_free(serial);
2679 if (serial->shared_int) {
2680 mutex_lock(&serial->shared_int->shared_int_lock);
2681 if (--serial->shared_int->ref_count == 0)
2682 hso_free_shared_int(serial->shared_int);
2684 mutex_unlock(&serial->shared_int->shared_int_lock);
2686 hso_free_tiomget(serial);
2691 /* Creates a bulk AT channel */
2692 static struct hso_device *hso_create_bulk_serial_device(
2693 struct usb_interface *interface, int port)
2695 struct hso_device *hso_dev;
2696 struct hso_serial *serial;
2698 struct hso_tiocmget *tiocmget;
2700 hso_dev = hso_create_device(interface, port);
2704 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2708 serial->parent = hso_dev;
2709 hso_dev->port_data.dev_serial = serial;
2711 if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
2713 serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
2715 /* it isn't going to break our heart if serial->tiocmget
2716 * allocation fails don't bother checking this.
2718 if (serial->tiocmget) {
2719 tiocmget = serial->tiocmget;
2720 tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
2721 if (tiocmget->urb) {
2722 mutex_init(&tiocmget->mutex);
2723 init_waitqueue_head(&tiocmget->waitq);
2724 tiocmget->endp = hso_get_ep(
2726 USB_ENDPOINT_XFER_INT,
2729 hso_free_tiomget(serial);
2735 if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE,
2739 serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK,
2741 if (!serial->in_endp) {
2742 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
2748 hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) {
2749 dev_err(&interface->dev, "Failed to find BULK IN ep\n");
2753 serial->write_data = hso_std_serial_write_data;
2755 /* and record this serial */
2756 set_serial_by_index(serial->minor, serial);
2758 /* setup the proc dirs and files if needed */
2759 hso_log_port(hso_dev);
2761 /* done, return it */
2765 hso_serial_common_free(serial);
2767 hso_free_tiomget(serial);
2773 /* Creates a multiplexed AT channel */
2775 struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
2777 struct hso_shared_int *mux)
2779 struct hso_device *hso_dev;
2780 struct hso_serial *serial;
2783 port_spec = HSO_INTF_MUX;
2784 port_spec &= ~HSO_PORT_MASK;
2786 port_spec |= hso_mux_to_port(port);
2787 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT)
2790 hso_dev = hso_create_device(interface, port_spec);
2794 serial = kzalloc(sizeof(*serial), GFP_KERNEL);
2798 hso_dev->port_data.dev_serial = serial;
2799 serial->parent = hso_dev;
2801 if (hso_serial_common_create
2802 (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE))
2805 serial->tx_data_length--;
2806 serial->write_data = hso_mux_serial_write_data;
2808 serial->shared_int = mux;
2809 mutex_lock(&serial->shared_int->shared_int_lock);
2810 serial->shared_int->ref_count++;
2811 mutex_unlock(&serial->shared_int->shared_int_lock);
2813 /* and record this serial */
2814 set_serial_by_index(serial->minor, serial);
2816 /* setup the proc dirs and files if needed */
2817 hso_log_port(hso_dev);
2819 /* done, return it */
2824 tty_unregister_device(tty_drv, serial->minor);
2833 static void hso_free_shared_int(struct hso_shared_int *mux)
2835 usb_free_urb(mux->shared_intr_urb);
2836 kfree(mux->shared_intr_buf);
2837 mutex_unlock(&mux->shared_int_lock);
2842 struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface)
2844 struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL);
2849 mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT,
2851 if (!mux->intr_endp) {
2852 dev_err(&interface->dev, "Can't find INT IN endpoint\n");
2856 mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL);
2857 if (!mux->shared_intr_urb) {
2858 dev_err(&interface->dev, "Could not allocate intr urb?\n");
2861 mux->shared_intr_buf =
2862 kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize),
2864 if (!mux->shared_intr_buf) {
2865 dev_err(&interface->dev, "Could not allocate intr buf?\n");
2869 mutex_init(&mux->shared_int_lock);
2874 kfree(mux->shared_intr_buf);
2875 usb_free_urb(mux->shared_intr_urb);
2880 /* Gets the port spec for a certain interface */
2881 static int hso_get_config_data(struct usb_interface *interface)
2883 struct usb_device *usbdev = interface_to_usbdev(interface);
2885 u32 if_num = interface->altsetting->desc.bInterfaceNumber;
2888 if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
2889 0x86, 0xC0, 0, 0, config_data, 17,
2890 USB_CTRL_SET_TIMEOUT) != 0x11) {
2894 switch (config_data[if_num]) {
2899 result = HSO_PORT_DIAG;
2902 result = HSO_PORT_GPS;
2905 result = HSO_PORT_GPS_CONTROL;
2908 result = HSO_PORT_APP;
2911 result = HSO_PORT_APP2;
2914 result = HSO_PORT_CONTROL;
2917 result = HSO_PORT_NETWORK;
2920 result = HSO_PORT_MODEM;
2923 result = HSO_PORT_MSD;
2926 result = HSO_PORT_PCSC;
2929 result = HSO_PORT_VOICE;
2936 result |= HSO_INTF_BULK;
2938 if (config_data[16] & 0x1)
2939 result |= HSO_INFO_CRC_BUG;
2944 /* called once for each interface upon device insertion */
2945 static int hso_probe(struct usb_interface *interface,
2946 const struct usb_device_id *id)
2948 int mux, i, if_num, port_spec;
2949 unsigned char port_mask;
2950 struct hso_device *hso_dev = NULL;
2951 struct hso_shared_int *shared_int;
2952 struct hso_device *tmp_dev = NULL;
2954 if_num = interface->altsetting->desc.bInterfaceNumber;
2956 /* Get the interface/port specification from either driver_info or from
2957 * the device itself */
2958 if (id->driver_info)
2959 port_spec = ((u32 *)(id->driver_info))[if_num];
2961 port_spec = hso_get_config_data(interface);
2963 if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
2964 dev_err(&interface->dev, "Not our interface\n");
2967 /* Check if we need to switch to alt interfaces prior to port
2969 if (interface->num_altsetting > 1)
2970 usb_set_interface(interface_to_usbdev(interface), if_num, 1);
2971 interface->needs_remote_wakeup = 1;
2973 /* Allocate new hso device(s) */
2974 switch (port_spec & HSO_INTF_MASK) {
2976 if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
2977 /* Create the network device */
2979 hso_dev = hso_create_net_device(interface,
2987 if (hso_get_mux_ports(interface, &port_mask))
2988 /* TODO: de-allocate everything */
2991 shared_int = hso_create_shared_int(interface);
2995 for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) {
2996 if (port_mask & i) {
2997 hso_dev = hso_create_mux_serial_device(
2998 interface, i, shared_int);
3009 /* It's a regular bulk interface */
3010 if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) &&
3012 hso_dev = hso_create_net_device(interface, port_spec);
3015 hso_create_bulk_serial_device(interface, port_spec);
3023 /* save our data pointer in this device */
3024 usb_set_intfdata(interface, hso_dev);
3029 hso_free_interface(interface);
3033 /* device removed, cleaning up */
3034 static void hso_disconnect(struct usb_interface *interface)
3036 hso_free_interface(interface);
3038 /* remove reference of our private data */
3039 usb_set_intfdata(interface, NULL);
3042 static void async_get_intf(struct work_struct *data)
3044 struct hso_device *hso_dev =
3045 container_of(data, struct hso_device, async_get_intf);
3046 usb_autopm_get_interface(hso_dev->interface);
3049 static void async_put_intf(struct work_struct *data)
3051 struct hso_device *hso_dev =
3052 container_of(data, struct hso_device, async_put_intf);
3053 usb_autopm_put_interface(hso_dev->interface);
3056 static int hso_get_activity(struct hso_device *hso_dev)
3058 if (hso_dev->usb->state == USB_STATE_SUSPENDED) {
3059 if (!hso_dev->is_active) {
3060 hso_dev->is_active = 1;
3061 schedule_work(&hso_dev->async_get_intf);
3065 if (hso_dev->usb->state != USB_STATE_CONFIGURED)
3068 usb_mark_last_busy(hso_dev->usb);
3073 static int hso_put_activity(struct hso_device *hso_dev)
3075 if (hso_dev->usb->state != USB_STATE_SUSPENDED) {
3076 if (hso_dev->is_active) {
3077 hso_dev->is_active = 0;
3078 schedule_work(&hso_dev->async_put_intf);
3082 hso_dev->is_active = 0;
3086 /* called by kernel when we need to suspend device */
3087 static int hso_suspend(struct usb_interface *iface, pm_message_t message)
3091 /* Stop all serial ports */
3092 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3093 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3094 result = hso_stop_serial_device(serial_table[i]);
3100 /* Stop all network ports */
3101 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3102 if (network_table[i] &&
3103 (network_table[i]->interface == iface)) {
3104 result = hso_stop_net_device(network_table[i]);
3114 /* called by kernel when we need to resume device */
3115 static int hso_resume(struct usb_interface *iface)
3118 struct hso_net *hso_net;
3120 /* Start all serial ports */
3121 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3122 if (serial_table[i] && (serial_table[i]->interface == iface)) {
3123 if (dev2ser(serial_table[i])->open_count) {
3125 hso_start_serial_device(serial_table[i], GFP_NOIO);
3126 hso_kick_transmit(dev2ser(serial_table[i]));
3133 /* Start all network ports */
3134 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3135 if (network_table[i] &&
3136 (network_table[i]->interface == iface)) {
3137 hso_net = dev2net(network_table[i]);
3138 if (hso_net->flags & IFF_UP) {
3139 /* First transmit any lingering data,
3140 then restart the device. */
3141 if (hso_net->skb_tx_buf) {
3142 dev_dbg(&iface->dev,
3144 " lingering data\n");
3145 hso_net_start_xmit(hso_net->skb_tx_buf,
3147 hso_net->skb_tx_buf = NULL;
3149 result = hso_start_net_device(network_table[i]);
3160 static void reset_device(struct work_struct *data)
3162 struct hso_device *hso_dev =
3163 container_of(data, struct hso_device, reset_device);
3164 struct usb_device *usb = hso_dev->usb;
3167 if (hso_dev->usb_gone) {
3168 D1("No reset during disconnect\n");
3170 result = usb_lock_device_for_reset(usb, hso_dev->interface);
3172 D1("unable to lock device for reset: %d\n", result);
3174 usb_reset_device(usb);
3175 usb_unlock_device(usb);
3180 static void hso_serial_ref_free(struct kref *ref)
3182 struct hso_device *hso_dev = container_of(ref, struct hso_device, ref);
3184 hso_free_serial_device(hso_dev);
3187 static void hso_free_interface(struct usb_interface *interface)
3189 struct hso_serial *hso_dev;
3190 struct tty_struct *tty;
3193 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
3194 if (serial_table[i] &&
3195 (serial_table[i]->interface == interface)) {
3196 hso_dev = dev2ser(serial_table[i]);
3197 spin_lock_irq(&hso_dev->serial_lock);
3198 tty = tty_kref_get(hso_dev->tty);
3199 spin_unlock_irq(&hso_dev->serial_lock);
3202 mutex_lock(&hso_dev->parent->mutex);
3204 hso_dev->parent->usb_gone = 1;
3205 mutex_unlock(&hso_dev->parent->mutex);
3206 kref_put(&serial_table[i]->ref, hso_serial_ref_free);
3210 for (i = 0; i < HSO_MAX_NET_DEVICES; i++) {
3211 if (network_table[i] &&
3212 (network_table[i]->interface == interface)) {
3213 struct rfkill *rfk = dev2net(network_table[i])->rfkill;
3214 /* hso_stop_net_device doesn't stop the net queue since
3215 * traffic needs to start it again when suspended */
3216 netif_stop_queue(dev2net(network_table[i])->net);
3217 hso_stop_net_device(network_table[i]);
3218 cancel_work_sync(&network_table[i]->async_put_intf);
3219 cancel_work_sync(&network_table[i]->async_get_intf);
3221 rfkill_unregister(rfk);
3222 rfkill_destroy(rfk);
3224 hso_free_net_device(network_table[i]);
3229 /* Helper functions */
3231 /* Get the endpoint ! */
3232 static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf,
3236 struct usb_host_interface *iface = intf->cur_altsetting;
3237 struct usb_endpoint_descriptor *endp;
3239 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3240 endp = &iface->endpoint[i].desc;
3241 if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) &&
3242 (usb_endpoint_type(endp) == type))
3249 /* Get the byte that describes which ports are enabled */
3250 static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports)
3253 struct usb_host_interface *iface = intf->cur_altsetting;
3255 if (iface->extralen == 3) {
3256 *ports = iface->extra[2];
3260 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
3261 if (iface->endpoint[i].extralen == 3) {
3262 *ports = iface->endpoint[i].extra[2];
3270 /* interrupt urb needs to be submitted, used for serial read of muxed port */
3271 static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int,
3272 struct usb_device *usb, gfp_t gfp)
3276 usb_fill_int_urb(shared_int->shared_intr_urb, usb,
3278 shared_int->intr_endp->bEndpointAddress & 0x7F),
3279 shared_int->shared_intr_buf,
3281 intr_callback, shared_int,
3282 shared_int->intr_endp->bInterval);
3284 result = usb_submit_urb(shared_int->shared_intr_urb, gfp);
3286 dev_warn(&usb->dev, "%s failed mux_intr_urb %d\n", __func__,
3292 /* operations setup of the serial interface */
3293 static const struct tty_operations hso_serial_ops = {
3294 .open = hso_serial_open,
3295 .close = hso_serial_close,
3296 .write = hso_serial_write,
3297 .write_room = hso_serial_write_room,
3298 .ioctl = hso_serial_ioctl,
3299 .set_termios = hso_serial_set_termios,
3300 .chars_in_buffer = hso_serial_chars_in_buffer,
3301 .tiocmget = hso_serial_tiocmget,
3302 .tiocmset = hso_serial_tiocmset,
3303 .unthrottle = hso_unthrottle
3306 static struct usb_driver hso_driver = {
3307 .name = driver_name,
3309 .disconnect = hso_disconnect,
3310 .id_table = hso_ids,
3311 .suspend = hso_suspend,
3312 .resume = hso_resume,
3313 .reset_resume = hso_resume,
3314 .supports_autosuspend = 1,
3317 static int __init hso_init(void)
3322 /* put it in the log */
3323 printk(KERN_INFO "hso: %s\n", version);
3325 /* Initialise the serial table semaphore and table */
3326 spin_lock_init(&serial_table_lock);
3327 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++)
3328 serial_table[i] = NULL;
3330 /* allocate our driver using the proper amount of supported minors */
3331 tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS);
3335 /* fill in all needed values */
3336 tty_drv->magic = TTY_DRIVER_MAGIC;
3337 tty_drv->owner = THIS_MODULE;
3338 tty_drv->driver_name = driver_name;
3339 tty_drv->name = tty_filename;
3341 /* if major number is provided as parameter, use that one */
3343 tty_drv->major = tty_major;
3345 tty_drv->minor_start = 0;
3346 tty_drv->num = HSO_SERIAL_TTY_MINORS;
3347 tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
3348 tty_drv->subtype = SERIAL_TYPE_NORMAL;
3349 tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
3350 tty_drv->init_termios = tty_std_termios;
3351 hso_init_termios(&tty_drv->init_termios);
3352 tty_set_operations(tty_drv, &hso_serial_ops);
3354 /* register the tty driver */
3355 result = tty_register_driver(tty_drv);
3357 printk(KERN_ERR "%s - tty_register_driver failed(%d)\n",
3362 /* register this module as an usb driver */
3363 result = usb_register(&hso_driver);
3365 printk(KERN_ERR "Could not register hso driver? error: %d\n",
3367 /* cleanup serial interface */
3368 tty_unregister_driver(tty_drv);
3376 static void __exit hso_exit(void)
3378 printk(KERN_INFO "hso: unloaded\n");
3380 tty_unregister_driver(tty_drv);
3381 /* deregister the usb driver */
3382 usb_deregister(&hso_driver);
3385 /* Module definitions */
3386 module_init(hso_init);
3387 module_exit(hso_exit);
3389 MODULE_AUTHOR(MOD_AUTHOR);
3390 MODULE_DESCRIPTION(MOD_DESCRIPTION);
3391 MODULE_LICENSE(MOD_LICENSE);
3392 MODULE_INFO(Version, DRIVER_VERSION);
3394 /* change the debug level (eg: insmod hso.ko debug=0x04) */
3395 MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]");
3396 module_param(debug, int, S_IRUGO | S_IWUSR);
3398 /* set the major tty number (eg: insmod hso.ko tty_major=245) */
3399 MODULE_PARM_DESC(tty_major, "Set the major tty number");
3400 module_param(tty_major, int, S_IRUGO | S_IWUSR);
3402 /* disable network interface (eg: insmod hso.ko disable_net=1) */
3403 MODULE_PARM_DESC(disable_net, "Disable the network interface");
3404 module_param(disable_net, int, S_IRUGO | S_IWUSR);