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72dc1c09 GKH |
1 | /****************************************************************************** |
2 | * | |
3 | * Driver for Option High Speed Mobile Devices. | |
4 | * | |
5 | * Copyright (C) 2008 Option International | |
11cd29b0 DJB |
6 | * Filip Aben <f.aben@option.com> |
7 | * Denis Joseph Barrow <d.barow@option.com> | |
3b7d2b31 | 8 | * Jan Dumon <j.dumon@option.com> |
72dc1c09 GKH |
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. | |
13 | * | |
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. | |
17 | * | |
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. | |
22 | * | |
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, | |
26 | * USA | |
27 | * | |
28 | * | |
29 | *****************************************************************************/ | |
30 | ||
31 | /****************************************************************************** | |
32 | * | |
33 | * Description of the device: | |
34 | * | |
35 | * Interface 0: Contains the IP network interface on the bulk end points. | |
36 | * The multiplexed serial ports are using the interrupt and | |
37 | * control endpoints. | |
38 | * Interrupt contains a bitmap telling which multiplexed | |
39 | * serialport needs servicing. | |
40 | * | |
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 | |
43 | * throughput. | |
44 | * | |
542f5482 DJB |
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. | |
72dc1c09 GKH |
50 | * |
51 | *****************************************************************************/ | |
52 | ||
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> | |
67 | #include <linux/ip.h> | |
68 | #include <linux/uaccess.h> | |
69 | #include <linux/usb/cdc.h> | |
70 | #include <net/arp.h> | |
71 | #include <asm/byteorder.h> | |
542f5482 DJB |
72 | #include <linux/serial_core.h> |
73 | #include <linux/serial.h> | |
72dc1c09 GKH |
74 | |
75 | ||
72dc1c09 GKH |
76 | #define MOD_AUTHOR "Option Wireless" |
77 | #define MOD_DESCRIPTION "USB High Speed Option driver" | |
78 | #define MOD_LICENSE "GPL" | |
79 | ||
80 | #define HSO_MAX_NET_DEVICES 10 | |
81 | #define HSO__MAX_MTU 2048 | |
82 | #define DEFAULT_MTU 1500 | |
83 | #define DEFAULT_MRU 1500 | |
84 | ||
85 | #define CTRL_URB_RX_SIZE 1024 | |
86 | #define CTRL_URB_TX_SIZE 64 | |
87 | ||
88 | #define BULK_URB_RX_SIZE 4096 | |
89 | #define BULK_URB_TX_SIZE 8192 | |
90 | ||
91 | #define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU | |
92 | #define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU | |
93 | #define MUX_BULK_RX_BUF_COUNT 4 | |
94 | #define USB_TYPE_OPTION_VENDOR 0x20 | |
95 | ||
96 | /* These definitions are used with the struct hso_net flags element */ | |
97 | /* - use *_bit operations on it. (bit indices not values.) */ | |
98 | #define HSO_NET_RUNNING 0 | |
99 | ||
100 | #define HSO_NET_TX_TIMEOUT (HZ*10) | |
101 | ||
72dc1c09 GKH |
102 | #define HSO_SERIAL_MAGIC 0x48534f31 |
103 | ||
104 | /* Number of ttys to handle */ | |
105 | #define HSO_SERIAL_TTY_MINORS 256 | |
106 | ||
107 | #define MAX_RX_URBS 2 | |
108 | ||
0235f641 GKH |
109 | static inline struct hso_serial *get_serial_by_tty(struct tty_struct *tty) |
110 | { | |
111 | if (tty) | |
112 | return tty->driver_data; | |
113 | return NULL; | |
114 | } | |
72dc1c09 GKH |
115 | |
116 | /*****************************************************************************/ | |
117 | /* Debugging functions */ | |
118 | /*****************************************************************************/ | |
119 | #define D__(lvl_, fmt, arg...) \ | |
120 | do { \ | |
121 | printk(lvl_ "[%d:%s]: " fmt "\n", \ | |
122 | __LINE__, __func__, ## arg); \ | |
123 | } while (0) | |
124 | ||
125 | #define D_(lvl, args...) \ | |
126 | do { \ | |
127 | if (lvl & debug) \ | |
128 | D__(KERN_INFO, args); \ | |
129 | } while (0) | |
130 | ||
131 | #define D1(args...) D_(0x01, ##args) | |
132 | #define D2(args...) D_(0x02, ##args) | |
133 | #define D3(args...) D_(0x04, ##args) | |
134 | #define D4(args...) D_(0x08, ##args) | |
135 | #define D5(args...) D_(0x10, ##args) | |
136 | ||
137 | /*****************************************************************************/ | |
138 | /* Enumerators */ | |
139 | /*****************************************************************************/ | |
140 | enum pkt_parse_state { | |
141 | WAIT_IP, | |
142 | WAIT_DATA, | |
143 | WAIT_SYNC | |
144 | }; | |
145 | ||
146 | /*****************************************************************************/ | |
147 | /* Structs */ | |
148 | /*****************************************************************************/ | |
149 | ||
150 | struct hso_shared_int { | |
151 | struct usb_endpoint_descriptor *intr_endp; | |
152 | void *shared_intr_buf; | |
153 | struct urb *shared_intr_urb; | |
154 | struct usb_device *usb; | |
155 | int use_count; | |
156 | int ref_count; | |
157 | struct mutex shared_int_lock; | |
158 | }; | |
159 | ||
160 | struct hso_net { | |
161 | struct hso_device *parent; | |
162 | struct net_device *net; | |
163 | struct rfkill *rfkill; | |
164 | ||
165 | struct usb_endpoint_descriptor *in_endp; | |
166 | struct usb_endpoint_descriptor *out_endp; | |
167 | ||
168 | struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT]; | |
169 | struct urb *mux_bulk_tx_urb; | |
170 | void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT]; | |
171 | void *mux_bulk_tx_buf; | |
172 | ||
173 | struct sk_buff *skb_rx_buf; | |
174 | struct sk_buff *skb_tx_buf; | |
175 | ||
176 | enum pkt_parse_state rx_parse_state; | |
177 | spinlock_t net_lock; | |
178 | ||
179 | unsigned short rx_buf_size; | |
180 | unsigned short rx_buf_missing; | |
181 | struct iphdr rx_ip_hdr; | |
182 | ||
183 | unsigned long flags; | |
184 | }; | |
185 | ||
8ef5ba63 DJB |
186 | enum rx_ctrl_state{ |
187 | RX_IDLE, | |
188 | RX_SENT, | |
189 | RX_PENDING | |
190 | }; | |
191 | ||
542f5482 DJB |
192 | #define BM_REQUEST_TYPE (0xa1) |
193 | #define B_NOTIFICATION (0x20) | |
194 | #define W_VALUE (0x0) | |
195 | #define W_INDEX (0x2) | |
196 | #define W_LENGTH (0x2) | |
197 | ||
198 | #define B_OVERRUN (0x1<<6) | |
199 | #define B_PARITY (0x1<<5) | |
200 | #define B_FRAMING (0x1<<4) | |
201 | #define B_RING_SIGNAL (0x1<<3) | |
202 | #define B_BREAK (0x1<<2) | |
203 | #define B_TX_CARRIER (0x1<<1) | |
204 | #define B_RX_CARRIER (0x1<<0) | |
205 | ||
206 | struct hso_serial_state_notification { | |
207 | u8 bmRequestType; | |
208 | u8 bNotification; | |
209 | u16 wValue; | |
210 | u16 wIndex; | |
211 | u16 wLength; | |
212 | u16 UART_state_bitmap; | |
ba2d3587 | 213 | } __packed; |
542f5482 DJB |
214 | |
215 | struct hso_tiocmget { | |
216 | struct mutex mutex; | |
217 | wait_queue_head_t waitq; | |
218 | int intr_completed; | |
219 | struct usb_endpoint_descriptor *endp; | |
220 | struct urb *urb; | |
221 | struct hso_serial_state_notification serial_state_notification; | |
222 | u16 prev_UART_state_bitmap; | |
223 | struct uart_icount icount; | |
224 | }; | |
225 | ||
226 | ||
72dc1c09 GKH |
227 | struct hso_serial { |
228 | struct hso_device *parent; | |
229 | int magic; | |
230 | u8 minor; | |
231 | ||
232 | struct hso_shared_int *shared_int; | |
233 | ||
234 | /* rx/tx urb could be either a bulk urb or a control urb depending | |
235 | on which serial port it is used on. */ | |
236 | struct urb *rx_urb[MAX_RX_URBS]; | |
237 | u8 num_rx_urbs; | |
238 | u8 *rx_data[MAX_RX_URBS]; | |
239 | u16 rx_data_length; /* should contain allocated length */ | |
240 | ||
241 | struct urb *tx_urb; | |
242 | u8 *tx_data; | |
243 | u8 *tx_buffer; | |
244 | u16 tx_data_length; /* should contain allocated length */ | |
245 | u16 tx_data_count; | |
246 | u16 tx_buffer_count; | |
247 | struct usb_ctrlrequest ctrl_req_tx; | |
248 | struct usb_ctrlrequest ctrl_req_rx; | |
249 | ||
250 | struct usb_endpoint_descriptor *in_endp; | |
251 | struct usb_endpoint_descriptor *out_endp; | |
252 | ||
8ef5ba63 | 253 | enum rx_ctrl_state rx_state; |
72dc1c09 GKH |
254 | u8 rts_state; |
255 | u8 dtr_state; | |
256 | unsigned tx_urb_used:1; | |
257 | ||
258 | /* from usb_serial_port */ | |
259 | struct tty_struct *tty; | |
260 | int open_count; | |
261 | spinlock_t serial_lock; | |
262 | ||
263 | int (*write_data) (struct hso_serial *serial); | |
542f5482 | 264 | struct hso_tiocmget *tiocmget; |
8ef5ba63 DJB |
265 | /* Hacks required to get flow control |
266 | * working on the serial receive buffers | |
267 | * so as not to drop characters on the floor. | |
268 | */ | |
269 | int curr_rx_urb_idx; | |
270 | u16 curr_rx_urb_offset; | |
271 | u8 rx_urb_filled[MAX_RX_URBS]; | |
272 | struct tasklet_struct unthrottle_tasklet; | |
273 | struct work_struct retry_unthrottle_workqueue; | |
72dc1c09 GKH |
274 | }; |
275 | ||
276 | struct hso_device { | |
277 | union { | |
278 | struct hso_serial *dev_serial; | |
279 | struct hso_net *dev_net; | |
280 | } port_data; | |
281 | ||
282 | u32 port_spec; | |
283 | ||
284 | u8 is_active; | |
285 | u8 usb_gone; | |
286 | struct work_struct async_get_intf; | |
287 | struct work_struct async_put_intf; | |
68a351c5 | 288 | struct work_struct reset_device; |
72dc1c09 GKH |
289 | |
290 | struct usb_device *usb; | |
291 | struct usb_interface *interface; | |
292 | ||
293 | struct device *dev; | |
294 | struct kref ref; | |
ab153d84 | 295 | struct mutex mutex; |
72dc1c09 GKH |
296 | }; |
297 | ||
298 | /* Type of interface */ | |
299 | #define HSO_INTF_MASK 0xFF00 | |
300 | #define HSO_INTF_MUX 0x0100 | |
301 | #define HSO_INTF_BULK 0x0200 | |
302 | ||
303 | /* Type of port */ | |
304 | #define HSO_PORT_MASK 0xFF | |
305 | #define HSO_PORT_NO_PORT 0x0 | |
306 | #define HSO_PORT_CONTROL 0x1 | |
307 | #define HSO_PORT_APP 0x2 | |
308 | #define HSO_PORT_GPS 0x3 | |
309 | #define HSO_PORT_PCSC 0x4 | |
310 | #define HSO_PORT_APP2 0x5 | |
311 | #define HSO_PORT_GPS_CONTROL 0x6 | |
312 | #define HSO_PORT_MSD 0x7 | |
313 | #define HSO_PORT_VOICE 0x8 | |
314 | #define HSO_PORT_DIAG2 0x9 | |
315 | #define HSO_PORT_DIAG 0x10 | |
316 | #define HSO_PORT_MODEM 0x11 | |
317 | #define HSO_PORT_NETWORK 0x12 | |
318 | ||
319 | /* Additional device info */ | |
320 | #define HSO_INFO_MASK 0xFF000000 | |
321 | #define HSO_INFO_CRC_BUG 0x01000000 | |
322 | ||
323 | /*****************************************************************************/ | |
324 | /* Prototypes */ | |
325 | /*****************************************************************************/ | |
326 | /* Serial driver functions */ | |
327 | static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file, | |
328 | unsigned int set, unsigned int clear); | |
329 | static void ctrl_callback(struct urb *urb); | |
8ef5ba63 | 330 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial); |
72dc1c09 GKH |
331 | static void hso_kick_transmit(struct hso_serial *serial); |
332 | /* Helper functions */ | |
333 | static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int, | |
334 | struct usb_device *usb, gfp_t gfp); | |
68a351c5 JD |
335 | static void handle_usb_error(int status, const char *function, |
336 | struct hso_device *hso_dev); | |
72dc1c09 GKH |
337 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, |
338 | int type, int dir); | |
339 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports); | |
340 | static void hso_free_interface(struct usb_interface *intf); | |
341 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags); | |
342 | static int hso_stop_serial_device(struct hso_device *hso_dev); | |
343 | static int hso_start_net_device(struct hso_device *hso_dev); | |
344 | static void hso_free_shared_int(struct hso_shared_int *shared_int); | |
345 | static int hso_stop_net_device(struct hso_device *hso_dev); | |
346 | static void hso_serial_ref_free(struct kref *ref); | |
8ef5ba63 DJB |
347 | static void hso_std_serial_read_bulk_callback(struct urb *urb); |
348 | static int hso_mux_serial_read(struct hso_serial *serial); | |
72dc1c09 GKH |
349 | static void async_get_intf(struct work_struct *data); |
350 | static void async_put_intf(struct work_struct *data); | |
351 | static int hso_put_activity(struct hso_device *hso_dev); | |
352 | static int hso_get_activity(struct hso_device *hso_dev); | |
542f5482 | 353 | static void tiocmget_intr_callback(struct urb *urb); |
68a351c5 | 354 | static void reset_device(struct work_struct *data); |
72dc1c09 GKH |
355 | /*****************************************************************************/ |
356 | /* Helping functions */ | |
357 | /*****************************************************************************/ | |
358 | ||
359 | /* #define DEBUG */ | |
360 | ||
0235f641 GKH |
361 | static inline struct hso_net *dev2net(struct hso_device *hso_dev) |
362 | { | |
363 | return hso_dev->port_data.dev_net; | |
364 | } | |
365 | ||
366 | static inline struct hso_serial *dev2ser(struct hso_device *hso_dev) | |
367 | { | |
368 | return hso_dev->port_data.dev_serial; | |
369 | } | |
72dc1c09 GKH |
370 | |
371 | /* Debugging functions */ | |
372 | #ifdef DEBUG | |
373 | static void dbg_dump(int line_count, const char *func_name, unsigned char *buf, | |
374 | unsigned int len) | |
375 | { | |
0235f641 | 376 | static char name[255]; |
72dc1c09 | 377 | |
0235f641 GKH |
378 | sprintf(name, "hso[%d:%s]", line_count, func_name); |
379 | print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len); | |
72dc1c09 GKH |
380 | } |
381 | ||
382 | #define DUMP(buf_, len_) \ | |
9ce673d5 | 383 | dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_) |
72dc1c09 GKH |
384 | |
385 | #define DUMP1(buf_, len_) \ | |
386 | do { \ | |
387 | if (0x01 & debug) \ | |
388 | DUMP(buf_, len_); \ | |
389 | } while (0) | |
390 | #else | |
391 | #define DUMP(buf_, len_) | |
392 | #define DUMP1(buf_, len_) | |
393 | #endif | |
394 | ||
395 | /* module parameters */ | |
396 | static int debug; | |
397 | static int tty_major; | |
398 | static int disable_net; | |
399 | ||
400 | /* driver info */ | |
401 | static const char driver_name[] = "hso"; | |
402 | static const char tty_filename[] = "ttyHS"; | |
242647bc | 403 | static const char *version = __FILE__ ": " MOD_AUTHOR; |
72dc1c09 GKH |
404 | /* the usb driver itself (registered in hso_init) */ |
405 | static struct usb_driver hso_driver; | |
406 | /* serial structures */ | |
407 | static struct tty_driver *tty_drv; | |
408 | static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS]; | |
409 | static struct hso_device *network_table[HSO_MAX_NET_DEVICES]; | |
410 | static spinlock_t serial_table_lock; | |
72dc1c09 GKH |
411 | |
412 | static const s32 default_port_spec[] = { | |
413 | HSO_INTF_MUX | HSO_PORT_NETWORK, | |
414 | HSO_INTF_BULK | HSO_PORT_DIAG, | |
415 | HSO_INTF_BULK | HSO_PORT_MODEM, | |
416 | 0 | |
417 | }; | |
418 | ||
419 | static const s32 icon321_port_spec[] = { | |
420 | HSO_INTF_MUX | HSO_PORT_NETWORK, | |
421 | HSO_INTF_BULK | HSO_PORT_DIAG2, | |
422 | HSO_INTF_BULK | HSO_PORT_MODEM, | |
423 | HSO_INTF_BULK | HSO_PORT_DIAG, | |
424 | 0 | |
425 | }; | |
426 | ||
427 | #define default_port_device(vendor, product) \ | |
428 | USB_DEVICE(vendor, product), \ | |
429 | .driver_info = (kernel_ulong_t)default_port_spec | |
430 | ||
431 | #define icon321_port_device(vendor, product) \ | |
432 | USB_DEVICE(vendor, product), \ | |
433 | .driver_info = (kernel_ulong_t)icon321_port_spec | |
434 | ||
435 | /* list of devices we support */ | |
436 | static const struct usb_device_id hso_ids[] = { | |
437 | {default_port_device(0x0af0, 0x6711)}, | |
438 | {default_port_device(0x0af0, 0x6731)}, | |
439 | {default_port_device(0x0af0, 0x6751)}, | |
440 | {default_port_device(0x0af0, 0x6771)}, | |
441 | {default_port_device(0x0af0, 0x6791)}, | |
442 | {default_port_device(0x0af0, 0x6811)}, | |
443 | {default_port_device(0x0af0, 0x6911)}, | |
444 | {default_port_device(0x0af0, 0x6951)}, | |
445 | {default_port_device(0x0af0, 0x6971)}, | |
446 | {default_port_device(0x0af0, 0x7011)}, | |
447 | {default_port_device(0x0af0, 0x7031)}, | |
448 | {default_port_device(0x0af0, 0x7051)}, | |
449 | {default_port_device(0x0af0, 0x7071)}, | |
450 | {default_port_device(0x0af0, 0x7111)}, | |
451 | {default_port_device(0x0af0, 0x7211)}, | |
452 | {default_port_device(0x0af0, 0x7251)}, | |
453 | {default_port_device(0x0af0, 0x7271)}, | |
454 | {default_port_device(0x0af0, 0x7311)}, | |
455 | {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */ | |
456 | {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */ | |
457 | {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */ | |
95eacee8 | 458 | {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */ |
72dc1c09 GKH |
459 | {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */ |
460 | {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */ | |
67dd8246 | 461 | {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */ |
72dc1c09 GKH |
462 | {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */ |
463 | {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */ | |
464 | {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */ | |
bab04c3a | 465 | {USB_DEVICE(0x0af0, 0x7701)}, |
ec157937 | 466 | {USB_DEVICE(0x0af0, 0x7706)}, |
bab04c3a DJB |
467 | {USB_DEVICE(0x0af0, 0x7801)}, |
468 | {USB_DEVICE(0x0af0, 0x7901)}, | |
ec157937 JD |
469 | {USB_DEVICE(0x0af0, 0x7A01)}, |
470 | {USB_DEVICE(0x0af0, 0x7A05)}, | |
9961d842 JD |
471 | {USB_DEVICE(0x0af0, 0x8200)}, |
472 | {USB_DEVICE(0x0af0, 0x8201)}, | |
ec157937 JD |
473 | {USB_DEVICE(0x0af0, 0x8300)}, |
474 | {USB_DEVICE(0x0af0, 0x8302)}, | |
475 | {USB_DEVICE(0x0af0, 0x8304)}, | |
476 | {USB_DEVICE(0x0af0, 0x8400)}, | |
dd7496f2 FA |
477 | {USB_DEVICE(0x0af0, 0x8600)}, |
478 | {USB_DEVICE(0x0af0, 0x8800)}, | |
479 | {USB_DEVICE(0x0af0, 0x8900)}, | |
5c7bf2f4 | 480 | {USB_DEVICE(0x0af0, 0x9000)}, |
9961d842 | 481 | {USB_DEVICE(0x0af0, 0xd035)}, |
67dd8246 | 482 | {USB_DEVICE(0x0af0, 0xd055)}, |
9961d842 JD |
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)}, | |
ec157937 JD |
489 | {USB_DEVICE(0x0af0, 0xd058)}, |
490 | {USB_DEVICE(0x0af0, 0xc100)}, | |
72dc1c09 GKH |
491 | {} |
492 | }; | |
493 | MODULE_DEVICE_TABLE(usb, hso_ids); | |
494 | ||
495 | /* Sysfs attribute */ | |
496 | static ssize_t hso_sysfs_show_porttype(struct device *dev, | |
497 | struct device_attribute *attr, | |
498 | char *buf) | |
499 | { | |
1aec5bdf | 500 | struct hso_device *hso_dev = dev_get_drvdata(dev); |
72dc1c09 GKH |
501 | char *port_name; |
502 | ||
503 | if (!hso_dev) | |
504 | return 0; | |
505 | ||
506 | switch (hso_dev->port_spec & HSO_PORT_MASK) { | |
507 | case HSO_PORT_CONTROL: | |
508 | port_name = "Control"; | |
509 | break; | |
510 | case HSO_PORT_APP: | |
511 | port_name = "Application"; | |
512 | break; | |
513 | case HSO_PORT_APP2: | |
514 | port_name = "Application2"; | |
515 | break; | |
516 | case HSO_PORT_GPS: | |
517 | port_name = "GPS"; | |
518 | break; | |
519 | case HSO_PORT_GPS_CONTROL: | |
520 | port_name = "GPS Control"; | |
521 | break; | |
522 | case HSO_PORT_PCSC: | |
523 | port_name = "PCSC"; | |
524 | break; | |
525 | case HSO_PORT_DIAG: | |
526 | port_name = "Diagnostic"; | |
527 | break; | |
528 | case HSO_PORT_DIAG2: | |
529 | port_name = "Diagnostic2"; | |
530 | break; | |
531 | case HSO_PORT_MODEM: | |
532 | port_name = "Modem"; | |
533 | break; | |
534 | case HSO_PORT_NETWORK: | |
535 | port_name = "Network"; | |
536 | break; | |
537 | default: | |
538 | port_name = "Unknown"; | |
539 | break; | |
540 | } | |
541 | ||
542 | return sprintf(buf, "%s\n", port_name); | |
543 | } | |
544 | static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL); | |
545 | ||
8ef5ba63 DJB |
546 | static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb) |
547 | { | |
548 | int idx; | |
549 | ||
550 | for (idx = 0; idx < serial->num_rx_urbs; idx++) | |
551 | if (serial->rx_urb[idx] == urb) | |
552 | return idx; | |
553 | dev_err(serial->parent->dev, "hso_urb_to_index failed\n"); | |
554 | return -1; | |
555 | } | |
556 | ||
72dc1c09 GKH |
557 | /* converts mux value to a port spec value */ |
558 | static u32 hso_mux_to_port(int mux) | |
559 | { | |
560 | u32 result; | |
561 | ||
562 | switch (mux) { | |
563 | case 0x1: | |
564 | result = HSO_PORT_CONTROL; | |
565 | break; | |
566 | case 0x2: | |
567 | result = HSO_PORT_APP; | |
568 | break; | |
569 | case 0x4: | |
570 | result = HSO_PORT_PCSC; | |
571 | break; | |
572 | case 0x8: | |
573 | result = HSO_PORT_GPS; | |
574 | break; | |
575 | case 0x10: | |
576 | result = HSO_PORT_APP2; | |
577 | break; | |
578 | default: | |
579 | result = HSO_PORT_NO_PORT; | |
580 | } | |
581 | return result; | |
582 | } | |
583 | ||
584 | /* converts port spec value to a mux value */ | |
585 | static u32 hso_port_to_mux(int port) | |
586 | { | |
587 | u32 result; | |
588 | ||
589 | switch (port & HSO_PORT_MASK) { | |
590 | case HSO_PORT_CONTROL: | |
591 | result = 0x0; | |
592 | break; | |
593 | case HSO_PORT_APP: | |
594 | result = 0x1; | |
595 | break; | |
596 | case HSO_PORT_PCSC: | |
597 | result = 0x2; | |
598 | break; | |
599 | case HSO_PORT_GPS: | |
600 | result = 0x3; | |
601 | break; | |
602 | case HSO_PORT_APP2: | |
603 | result = 0x4; | |
604 | break; | |
605 | default: | |
606 | result = 0x0; | |
607 | } | |
608 | return result; | |
609 | } | |
610 | ||
611 | static struct hso_serial *get_serial_by_shared_int_and_type( | |
612 | struct hso_shared_int *shared_int, | |
613 | int mux) | |
614 | { | |
615 | int i, port; | |
616 | ||
617 | port = hso_mux_to_port(mux); | |
618 | ||
619 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
8e95a202 JP |
620 | if (serial_table[i] && |
621 | (dev2ser(serial_table[i])->shared_int == shared_int) && | |
622 | ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) { | |
72dc1c09 GKH |
623 | return dev2ser(serial_table[i]); |
624 | } | |
625 | } | |
626 | ||
627 | return NULL; | |
628 | } | |
629 | ||
630 | static struct hso_serial *get_serial_by_index(unsigned index) | |
631 | { | |
0235f641 | 632 | struct hso_serial *serial = NULL; |
72dc1c09 GKH |
633 | unsigned long flags; |
634 | ||
72dc1c09 | 635 | spin_lock_irqsave(&serial_table_lock, flags); |
0235f641 GKH |
636 | if (serial_table[index]) |
637 | serial = dev2ser(serial_table[index]); | |
72dc1c09 GKH |
638 | spin_unlock_irqrestore(&serial_table_lock, flags); |
639 | ||
640 | return serial; | |
641 | } | |
642 | ||
643 | static int get_free_serial_index(void) | |
644 | { | |
645 | int index; | |
646 | unsigned long flags; | |
647 | ||
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); | |
652 | return index; | |
653 | } | |
654 | } | |
655 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
656 | ||
657 | printk(KERN_ERR "%s: no free serial devices in table\n", __func__); | |
658 | return -1; | |
659 | } | |
660 | ||
661 | static void set_serial_by_index(unsigned index, struct hso_serial *serial) | |
662 | { | |
663 | unsigned long flags; | |
0235f641 | 664 | |
72dc1c09 GKH |
665 | spin_lock_irqsave(&serial_table_lock, flags); |
666 | if (serial) | |
667 | serial_table[index] = serial->parent; | |
668 | else | |
669 | serial_table[index] = NULL; | |
670 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
671 | } | |
672 | ||
68a351c5 JD |
673 | static void handle_usb_error(int status, const char *function, |
674 | struct hso_device *hso_dev) | |
72dc1c09 GKH |
675 | { |
676 | char *explanation; | |
677 | ||
678 | switch (status) { | |
679 | case -ENODEV: | |
680 | explanation = "no device"; | |
681 | break; | |
682 | case -ENOENT: | |
683 | explanation = "endpoint not enabled"; | |
684 | break; | |
685 | case -EPIPE: | |
686 | explanation = "endpoint stalled"; | |
687 | break; | |
688 | case -ENOSPC: | |
689 | explanation = "not enough bandwidth"; | |
690 | break; | |
691 | case -ESHUTDOWN: | |
692 | explanation = "device disabled"; | |
693 | break; | |
694 | case -EHOSTUNREACH: | |
695 | explanation = "device suspended"; | |
696 | break; | |
697 | case -EINVAL: | |
698 | case -EAGAIN: | |
699 | case -EFBIG: | |
700 | case -EMSGSIZE: | |
701 | explanation = "internal error"; | |
702 | break; | |
68a351c5 JD |
703 | case -EILSEQ: |
704 | case -EPROTO: | |
705 | case -ETIME: | |
706 | case -ETIMEDOUT: | |
707 | explanation = "protocol error"; | |
708 | if (hso_dev) | |
709 | schedule_work(&hso_dev->reset_device); | |
710 | break; | |
72dc1c09 GKH |
711 | default: |
712 | explanation = "unknown status"; | |
713 | break; | |
714 | } | |
68a351c5 JD |
715 | |
716 | /* log a meaningful explanation of an USB status */ | |
72dc1c09 GKH |
717 | D1("%s: received USB status - %s (%d)", function, explanation, status); |
718 | } | |
719 | ||
720 | /* Network interface functions */ | |
721 | ||
722 | /* called when net interface is brought up by ifconfig */ | |
723 | static int hso_net_open(struct net_device *net) | |
724 | { | |
725 | struct hso_net *odev = netdev_priv(net); | |
726 | unsigned long flags = 0; | |
727 | ||
728 | if (!odev) { | |
729 | dev_err(&net->dev, "No net device !\n"); | |
730 | return -ENODEV; | |
731 | } | |
732 | ||
733 | odev->skb_tx_buf = NULL; | |
734 | ||
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); | |
741 | ||
72dc1c09 GKH |
742 | /* We are up and running. */ |
743 | set_bit(HSO_NET_RUNNING, &odev->flags); | |
889bd9b6 | 744 | hso_start_net_device(odev->parent); |
72dc1c09 GKH |
745 | |
746 | /* Tell the kernel we are ready to start receiving from it */ | |
747 | netif_start_queue(net); | |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | /* called when interface is brought down by ifconfig */ | |
753 | static int hso_net_close(struct net_device *net) | |
754 | { | |
755 | struct hso_net *odev = netdev_priv(net); | |
756 | ||
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); | |
761 | ||
762 | hso_stop_net_device(odev->parent); | |
763 | ||
764 | /* done */ | |
765 | return 0; | |
766 | } | |
767 | ||
768 | /* USB tells is xmit done, we should start the netqueue again */ | |
769 | static void write_bulk_callback(struct urb *urb) | |
770 | { | |
771 | struct hso_net *odev = urb->context; | |
772 | int status = urb->status; | |
773 | ||
774 | /* Sanity check */ | |
775 | if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { | |
776 | dev_err(&urb->dev->dev, "%s: device not running\n", __func__); | |
777 | return; | |
778 | } | |
779 | ||
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", | |
783 | __func__); | |
784 | return; | |
785 | } | |
786 | ||
787 | /* log status, but don't act on it, we don't need to resubmit anything | |
788 | * anyhow */ | |
789 | if (status) | |
68a351c5 | 790 | handle_usb_error(status, __func__, odev->parent); |
72dc1c09 GKH |
791 | |
792 | hso_put_activity(odev->parent); | |
793 | ||
794 | /* Tell the network interface we are ready for another frame */ | |
795 | netif_wake_queue(odev->net); | |
796 | } | |
797 | ||
798 | /* called by kernel when we need to transmit a packet */ | |
25a79c41 SH |
799 | static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb, |
800 | struct net_device *net) | |
72dc1c09 GKH |
801 | { |
802 | struct hso_net *odev = netdev_priv(net); | |
803 | int result; | |
804 | ||
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; | |
6ed10654 | 809 | return NETDEV_TX_OK; |
72dc1c09 GKH |
810 | } |
811 | ||
812 | /* log if asked */ | |
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); | |
817 | ||
818 | /* Fill in the URB for shipping it out. */ | |
819 | usb_fill_bulk_urb(odev->mux_bulk_tx_urb, | |
820 | odev->parent->usb, | |
821 | usb_sndbulkpipe(odev->parent->usb, | |
822 | odev->out_endp-> | |
823 | bEndpointAddress & 0x7F), | |
824 | odev->mux_bulk_tx_buf, skb->len, write_bulk_callback, | |
825 | odev); | |
826 | ||
827 | /* Deal with the Zero Length packet problem, I hope */ | |
828 | odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET; | |
829 | ||
830 | /* Send the URB on its merry way. */ | |
831 | result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC); | |
832 | if (result) { | |
833 | dev_warn(&odev->parent->interface->dev, | |
8a5c9c49 | 834 | "failed mux_bulk_tx_urb %d\n", result); |
72dc1c09 GKH |
835 | net->stats.tx_errors++; |
836 | netif_start_queue(net); | |
837 | } else { | |
838 | net->stats.tx_packets++; | |
839 | net->stats.tx_bytes += skb->len; | |
72dc1c09 GKH |
840 | } |
841 | dev_kfree_skb(skb); | |
842 | /* we're done */ | |
5b2c4b97 | 843 | return NETDEV_TX_OK; |
72dc1c09 GKH |
844 | } |
845 | ||
0fc0b732 | 846 | static const struct ethtool_ops ops = { |
72dc1c09 GKH |
847 | .get_link = ethtool_op_get_link |
848 | }; | |
849 | ||
850 | /* called when a packet did not ack after watchdogtimeout */ | |
851 | static void hso_net_tx_timeout(struct net_device *net) | |
852 | { | |
853 | struct hso_net *odev = netdev_priv(net); | |
854 | ||
855 | if (!odev) | |
856 | return; | |
857 | ||
858 | /* Tell syslog we are hosed. */ | |
859 | dev_warn(&net->dev, "Tx timed out.\n"); | |
860 | ||
861 | /* Tear the waiting frame off the list */ | |
8e95a202 JP |
862 | if (odev->mux_bulk_tx_urb && |
863 | (odev->mux_bulk_tx_urb->status == -EINPROGRESS)) | |
72dc1c09 GKH |
864 | usb_unlink_urb(odev->mux_bulk_tx_urb); |
865 | ||
866 | /* Update statistics */ | |
867 | net->stats.tx_errors++; | |
868 | } | |
869 | ||
870 | /* make a real packet from the received USB buffer */ | |
871 | static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt, | |
872 | unsigned int count, unsigned char is_eop) | |
873 | { | |
874 | unsigned short temp_bytes; | |
875 | unsigned short buffer_offset = 0; | |
876 | unsigned short frame_len; | |
877 | unsigned char *tmp_rx_buf; | |
878 | ||
879 | /* log if needed */ | |
880 | D1("Rx %d bytes", count); | |
881 | DUMP(ip_pkt, min(128, (int)count)); | |
882 | ||
883 | while (count) { | |
884 | switch (odev->rx_parse_state) { | |
885 | case WAIT_IP: | |
886 | /* waiting for IP header. */ | |
887 | /* wanted bytes - size of ip header */ | |
888 | temp_bytes = | |
889 | (count < | |
890 | odev->rx_buf_missing) ? count : odev-> | |
891 | rx_buf_missing; | |
892 | ||
893 | memcpy(((unsigned char *)(&odev->rx_ip_hdr)) + | |
894 | odev->rx_buf_size, ip_pkt + buffer_offset, | |
895 | temp_bytes); | |
896 | ||
897 | odev->rx_buf_size += temp_bytes; | |
898 | buffer_offset += temp_bytes; | |
899 | odev->rx_buf_missing -= temp_bytes; | |
900 | count -= temp_bytes; | |
901 | ||
902 | if (!odev->rx_buf_missing) { | |
903 | /* header is complete allocate an sk_buffer and | |
904 | * continue to WAIT_DATA */ | |
905 | frame_len = ntohs(odev->rx_ip_hdr.tot_len); | |
906 | ||
907 | if ((frame_len > DEFAULT_MRU) || | |
908 | (frame_len < sizeof(struct iphdr))) { | |
909 | dev_err(&odev->net->dev, | |
910 | "Invalid frame (%d) length\n", | |
911 | frame_len); | |
912 | odev->rx_parse_state = WAIT_SYNC; | |
913 | continue; | |
914 | } | |
915 | /* Allocate an sk_buff */ | |
d65a68a8 PZ |
916 | odev->skb_rx_buf = netdev_alloc_skb(odev->net, |
917 | frame_len); | |
72dc1c09 GKH |
918 | if (!odev->skb_rx_buf) { |
919 | /* We got no receive buffer. */ | |
920 | D1("could not allocate memory"); | |
921 | odev->rx_parse_state = WAIT_SYNC; | |
922 | return; | |
923 | } | |
72dc1c09 GKH |
924 | |
925 | /* Copy what we got so far. make room for iphdr | |
926 | * after tail. */ | |
927 | tmp_rx_buf = | |
928 | skb_put(odev->skb_rx_buf, | |
929 | sizeof(struct iphdr)); | |
930 | memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr), | |
931 | sizeof(struct iphdr)); | |
932 | ||
933 | /* ETH_HLEN */ | |
934 | odev->rx_buf_size = sizeof(struct iphdr); | |
935 | ||
936 | /* Filip actually use .tot_len */ | |
937 | odev->rx_buf_missing = | |
938 | frame_len - sizeof(struct iphdr); | |
939 | odev->rx_parse_state = WAIT_DATA; | |
940 | } | |
941 | break; | |
942 | ||
943 | case WAIT_DATA: | |
944 | temp_bytes = (count < odev->rx_buf_missing) | |
945 | ? count : odev->rx_buf_missing; | |
946 | ||
947 | /* Copy the rest of the bytes that are left in the | |
948 | * buffer into the waiting sk_buf. */ | |
949 | /* Make room for temp_bytes after tail. */ | |
950 | tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes); | |
951 | memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes); | |
952 | ||
953 | odev->rx_buf_missing -= temp_bytes; | |
954 | count -= temp_bytes; | |
955 | buffer_offset += temp_bytes; | |
956 | odev->rx_buf_size += temp_bytes; | |
957 | if (!odev->rx_buf_missing) { | |
958 | /* Packet is complete. Inject into stack. */ | |
959 | /* We have IP packet here */ | |
09640e63 | 960 | odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP); |
72dc1c09 GKH |
961 | /* don't check it */ |
962 | odev->skb_rx_buf->ip_summed = | |
963 | CHECKSUM_UNNECESSARY; | |
964 | ||
965 | skb_reset_mac_header(odev->skb_rx_buf); | |
966 | ||
967 | /* Ship it off to the kernel */ | |
968 | netif_rx(odev->skb_rx_buf); | |
969 | /* No longer our buffer. */ | |
970 | odev->skb_rx_buf = NULL; | |
971 | ||
972 | /* update out statistics */ | |
973 | odev->net->stats.rx_packets++; | |
974 | ||
975 | odev->net->stats.rx_bytes += odev->rx_buf_size; | |
976 | ||
977 | odev->rx_buf_size = 0; | |
978 | odev->rx_buf_missing = sizeof(struct iphdr); | |
979 | odev->rx_parse_state = WAIT_IP; | |
980 | } | |
981 | break; | |
982 | ||
983 | case WAIT_SYNC: | |
984 | D1(" W_S"); | |
985 | count = 0; | |
986 | break; | |
987 | default: | |
988 | D1(" "); | |
989 | count--; | |
990 | break; | |
991 | } | |
992 | } | |
993 | ||
994 | /* Recovery mechanism for WAIT_SYNC state. */ | |
995 | if (is_eop) { | |
996 | if (odev->rx_parse_state == WAIT_SYNC) { | |
997 | odev->rx_parse_state = WAIT_IP; | |
998 | odev->rx_buf_size = 0; | |
999 | odev->rx_buf_missing = sizeof(struct iphdr); | |
1000 | } | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | /* Moving data from usb to kernel (in interrupt state) */ | |
1005 | static void read_bulk_callback(struct urb *urb) | |
1006 | { | |
1007 | struct hso_net *odev = urb->context; | |
1008 | struct net_device *net; | |
1009 | int result; | |
1010 | int status = urb->status; | |
1011 | ||
1012 | /* is al ok? (Filip: Who's Al ?) */ | |
1013 | if (status) { | |
68a351c5 | 1014 | handle_usb_error(status, __func__, odev->parent); |
72dc1c09 GKH |
1015 | return; |
1016 | } | |
1017 | ||
1018 | /* Sanity check */ | |
1019 | if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { | |
1020 | D1("BULK IN callback but driver is not active!"); | |
1021 | return; | |
1022 | } | |
1023 | usb_mark_last_busy(urb->dev); | |
1024 | ||
1025 | net = odev->net; | |
1026 | ||
1027 | if (!netif_device_present(net)) { | |
1028 | /* Somebody killed our network interface... */ | |
1029 | return; | |
1030 | } | |
1031 | ||
1032 | if (odev->parent->port_spec & HSO_INFO_CRC_BUG) { | |
1033 | u32 rest; | |
1034 | u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF }; | |
d9ced80d JD |
1035 | rest = urb->actual_length % |
1036 | le16_to_cpu(odev->in_endp->wMaxPacketSize); | |
8e95a202 JP |
1037 | if (((rest == 5) || (rest == 6)) && |
1038 | !memcmp(((u8 *) urb->transfer_buffer) + | |
1039 | urb->actual_length - 4, crc_check, 4)) { | |
72dc1c09 GKH |
1040 | urb->actual_length -= 4; |
1041 | } | |
1042 | } | |
1043 | ||
1044 | /* do we even have a packet? */ | |
1045 | if (urb->actual_length) { | |
1046 | /* Handle the IP stream, add header and push it onto network | |
1047 | * stack if the packet is complete. */ | |
1048 | spin_lock(&odev->net_lock); | |
1049 | packetizeRx(odev, urb->transfer_buffer, urb->actual_length, | |
1050 | (urb->transfer_buffer_length > | |
1051 | urb->actual_length) ? 1 : 0); | |
1052 | spin_unlock(&odev->net_lock); | |
1053 | } | |
1054 | ||
1055 | /* We are done with this URB, resubmit it. Prep the USB to wait for | |
1056 | * another frame. Reuse same as received. */ | |
1057 | usb_fill_bulk_urb(urb, | |
1058 | odev->parent->usb, | |
1059 | usb_rcvbulkpipe(odev->parent->usb, | |
1060 | odev->in_endp-> | |
1061 | bEndpointAddress & 0x7F), | |
1062 | urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE, | |
1063 | read_bulk_callback, odev); | |
1064 | ||
1065 | /* Give this to the USB subsystem so it can tell us when more data | |
1066 | * arrives. */ | |
1067 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1068 | if (result) | |
1069 | dev_warn(&odev->parent->interface->dev, | |
8a5c9c49 | 1070 | "%s failed submit mux_bulk_rx_urb %d\n", __func__, |
72dc1c09 GKH |
1071 | result); |
1072 | } | |
1073 | ||
1074 | /* Serial driver functions */ | |
1075 | ||
ac9720c3 | 1076 | static void hso_init_termios(struct ktermios *termios) |
72dc1c09 | 1077 | { |
72dc1c09 GKH |
1078 | /* |
1079 | * The default requirements for this device are: | |
1080 | */ | |
72dc1c09 GKH |
1081 | termios->c_iflag &= |
1082 | ~(IGNBRK /* disable ignore break */ | |
1083 | | BRKINT /* disable break causes interrupt */ | |
1084 | | PARMRK /* disable mark parity errors */ | |
1085 | | ISTRIP /* disable clear high bit of input characters */ | |
1086 | | INLCR /* disable translate NL to CR */ | |
1087 | | IGNCR /* disable ignore CR */ | |
1088 | | ICRNL /* disable translate CR to NL */ | |
1089 | | IXON); /* disable enable XON/XOFF flow control */ | |
1090 | ||
1091 | /* disable postprocess output characters */ | |
1092 | termios->c_oflag &= ~OPOST; | |
1093 | ||
1094 | termios->c_lflag &= | |
1095 | ~(ECHO /* disable echo input characters */ | |
1096 | | ECHONL /* disable echo new line */ | |
1097 | | ICANON /* disable erase, kill, werase, and rprnt | |
1098 | special characters */ | |
1099 | | ISIG /* disable interrupt, quit, and suspend special | |
1100 | characters */ | |
1101 | | IEXTEN); /* disable non-POSIX special characters */ | |
1102 | ||
1103 | termios->c_cflag &= | |
1104 | ~(CSIZE /* no size */ | |
1105 | | PARENB /* disable parity bit */ | |
1106 | | CBAUD /* clear current baud rate */ | |
1107 | | CBAUDEX); /* clear current buad rate */ | |
1108 | ||
1109 | termios->c_cflag |= CS8; /* character size 8 bits */ | |
1110 | ||
1111 | /* baud rate 115200 */ | |
ac9720c3 AC |
1112 | tty_termios_encode_baud_rate(termios, 115200, 115200); |
1113 | } | |
1114 | ||
1115 | static void _hso_serial_set_termios(struct tty_struct *tty, | |
1116 | struct ktermios *old) | |
1117 | { | |
1118 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1119 | struct ktermios *termios; | |
1120 | ||
1121 | if (!serial) { | |
1122 | printk(KERN_ERR "%s: no tty structures", __func__); | |
1123 | return; | |
1124 | } | |
1125 | ||
1126 | D4("port %d", serial->minor); | |
72dc1c09 GKH |
1127 | |
1128 | /* | |
ac9720c3 | 1129 | * Fix up unsupported bits |
72dc1c09 | 1130 | */ |
ac9720c3 AC |
1131 | termios = tty->termios; |
1132 | termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */ | |
1133 | ||
1134 | termios->c_cflag &= | |
1135 | ~(CSIZE /* no size */ | |
1136 | | PARENB /* disable parity bit */ | |
1137 | | CBAUD /* clear current baud rate */ | |
1138 | | CBAUDEX); /* clear current buad rate */ | |
1139 | ||
1140 | termios->c_cflag |= CS8; /* character size 8 bits */ | |
1141 | ||
1142 | /* baud rate 115200 */ | |
1143 | tty_encode_baud_rate(tty, 115200, 115200); | |
72dc1c09 GKH |
1144 | } |
1145 | ||
8ef5ba63 DJB |
1146 | static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb) |
1147 | { | |
1148 | int result; | |
8ef5ba63 DJB |
1149 | /* We are done with this URB, resubmit it. Prep the USB to wait for |
1150 | * another frame */ | |
1151 | usb_fill_bulk_urb(urb, serial->parent->usb, | |
1152 | usb_rcvbulkpipe(serial->parent->usb, | |
1153 | serial->in_endp-> | |
1154 | bEndpointAddress & 0x7F), | |
1155 | urb->transfer_buffer, serial->rx_data_length, | |
1156 | hso_std_serial_read_bulk_callback, serial); | |
1157 | /* Give this to the USB subsystem so it can tell us when more data | |
1158 | * arrives. */ | |
1159 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1160 | if (result) { | |
1161 | dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n", | |
1162 | __func__, result); | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | ||
1167 | ||
1168 | ||
1169 | static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial) | |
1170 | { | |
1171 | int count; | |
1172 | struct urb *curr_urb; | |
1173 | ||
1174 | while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) { | |
1175 | curr_urb = serial->rx_urb[serial->curr_rx_urb_idx]; | |
1176 | count = put_rxbuf_data(curr_urb, serial); | |
1177 | if (count == -1) | |
1178 | return; | |
1179 | if (count == 0) { | |
1180 | serial->curr_rx_urb_idx++; | |
1181 | if (serial->curr_rx_urb_idx >= serial->num_rx_urbs) | |
1182 | serial->curr_rx_urb_idx = 0; | |
1183 | hso_resubmit_rx_bulk_urb(serial, curr_urb); | |
1184 | } | |
1185 | } | |
1186 | } | |
1187 | ||
1188 | static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial) | |
1189 | { | |
1190 | int count = 0; | |
1191 | struct urb *urb; | |
1192 | ||
1193 | urb = serial->rx_urb[0]; | |
1194 | if (serial->open_count > 0) { | |
1195 | count = put_rxbuf_data(urb, serial); | |
1196 | if (count == -1) | |
1197 | return; | |
1198 | } | |
1199 | /* Re issue a read as long as we receive data. */ | |
1200 | ||
1201 | if (count == 0 && ((urb->actual_length != 0) || | |
1202 | (serial->rx_state == RX_PENDING))) { | |
1203 | serial->rx_state = RX_SENT; | |
1204 | hso_mux_serial_read(serial); | |
1205 | } else | |
1206 | serial->rx_state = RX_IDLE; | |
1207 | } | |
1208 | ||
1209 | ||
1210 | /* read callback for Diag and CS port */ | |
1211 | static void hso_std_serial_read_bulk_callback(struct urb *urb) | |
1212 | { | |
1213 | struct hso_serial *serial = urb->context; | |
1214 | int status = urb->status; | |
1215 | ||
1216 | /* sanity check */ | |
1217 | if (!serial) { | |
1218 | D1("serial == NULL"); | |
1219 | return; | |
1220 | } else if (status) { | |
68a351c5 | 1221 | handle_usb_error(status, __func__, serial->parent); |
8ef5ba63 DJB |
1222 | return; |
1223 | } | |
1224 | ||
1225 | D4("\n--- Got serial_read_bulk callback %02x ---", status); | |
1226 | D1("Actual length = %d\n", urb->actual_length); | |
1227 | DUMP1(urb->transfer_buffer, urb->actual_length); | |
1228 | ||
1229 | /* Anyone listening? */ | |
1230 | if (serial->open_count == 0) | |
1231 | return; | |
1232 | ||
1233 | if (status == 0) { | |
1234 | if (serial->parent->port_spec & HSO_INFO_CRC_BUG) { | |
1235 | u32 rest; | |
1236 | u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF }; | |
1237 | rest = | |
1238 | urb->actual_length % | |
d9ced80d | 1239 | le16_to_cpu(serial->in_endp->wMaxPacketSize); |
8e95a202 JP |
1240 | if (((rest == 5) || (rest == 6)) && |
1241 | !memcmp(((u8 *) urb->transfer_buffer) + | |
1242 | urb->actual_length - 4, crc_check, 4)) { | |
8ef5ba63 DJB |
1243 | urb->actual_length -= 4; |
1244 | } | |
1245 | } | |
1246 | /* Valid data, handle RX data */ | |
1247 | spin_lock(&serial->serial_lock); | |
1248 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1; | |
1249 | put_rxbuf_data_and_resubmit_bulk_urb(serial); | |
1250 | spin_unlock(&serial->serial_lock); | |
1251 | } else if (status == -ENOENT || status == -ECONNRESET) { | |
1252 | /* Unlinked - check for throttled port. */ | |
1253 | D2("Port %d, successfully unlinked urb", serial->minor); | |
1254 | spin_lock(&serial->serial_lock); | |
1255 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; | |
1256 | hso_resubmit_rx_bulk_urb(serial, urb); | |
1257 | spin_unlock(&serial->serial_lock); | |
1258 | } else { | |
1259 | D2("Port %d, status = %d for read urb", serial->minor, status); | |
1260 | return; | |
1261 | } | |
1262 | } | |
1263 | ||
1264 | /* | |
1265 | * This needs to be a tasklet otherwise we will | |
1266 | * end up recursively calling this function. | |
1267 | */ | |
0227abc9 | 1268 | static void hso_unthrottle_tasklet(struct hso_serial *serial) |
8ef5ba63 DJB |
1269 | { |
1270 | unsigned long flags; | |
1271 | ||
1272 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1273 | if ((serial->parent->port_spec & HSO_INTF_MUX)) | |
1274 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); | |
1275 | else | |
1276 | put_rxbuf_data_and_resubmit_bulk_urb(serial); | |
1277 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1278 | } | |
1279 | ||
1280 | static void hso_unthrottle(struct tty_struct *tty) | |
1281 | { | |
1282 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1283 | ||
1284 | tasklet_hi_schedule(&serial->unthrottle_tasklet); | |
1285 | } | |
1286 | ||
0227abc9 | 1287 | static void hso_unthrottle_workfunc(struct work_struct *work) |
8ef5ba63 DJB |
1288 | { |
1289 | struct hso_serial *serial = | |
1290 | container_of(work, struct hso_serial, | |
1291 | retry_unthrottle_workqueue); | |
1292 | hso_unthrottle_tasklet(serial); | |
1293 | } | |
1294 | ||
72dc1c09 GKH |
1295 | /* open the requested serial port */ |
1296 | static int hso_serial_open(struct tty_struct *tty, struct file *filp) | |
1297 | { | |
1298 | struct hso_serial *serial = get_serial_by_index(tty->index); | |
ab153d84 | 1299 | int result; |
72dc1c09 GKH |
1300 | |
1301 | /* sanity check */ | |
1302 | if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) { | |
e136e303 | 1303 | WARN_ON(1); |
72dc1c09 GKH |
1304 | tty->driver_data = NULL; |
1305 | D1("Failed to open port"); | |
1306 | return -ENODEV; | |
1307 | } | |
1308 | ||
ab153d84 | 1309 | mutex_lock(&serial->parent->mutex); |
ab153d84 DM |
1310 | result = usb_autopm_get_interface(serial->parent->interface); |
1311 | if (result < 0) | |
72dc1c09 GKH |
1312 | goto err_out; |
1313 | ||
1314 | D1("Opening %d", serial->minor); | |
1315 | kref_get(&serial->parent->ref); | |
1316 | ||
1317 | /* setup */ | |
e136e303 | 1318 | spin_lock_irq(&serial->serial_lock); |
72dc1c09 | 1319 | tty->driver_data = serial; |
fe41cbb1 | 1320 | tty_kref_put(serial->tty); |
e136e303 AC |
1321 | serial->tty = tty_kref_get(tty); |
1322 | spin_unlock_irq(&serial->serial_lock); | |
72dc1c09 | 1323 | |
2f9889a2 DM |
1324 | /* check for port already opened, if not set the termios */ |
1325 | serial->open_count++; | |
72dc1c09 | 1326 | if (serial->open_count == 1) { |
8ef5ba63 | 1327 | serial->rx_state = RX_IDLE; |
72dc1c09 GKH |
1328 | /* Force default termio settings */ |
1329 | _hso_serial_set_termios(tty, NULL); | |
8ef5ba63 DJB |
1330 | tasklet_init(&serial->unthrottle_tasklet, |
1331 | (void (*)(unsigned long))hso_unthrottle_tasklet, | |
1332 | (unsigned long)serial); | |
1333 | INIT_WORK(&serial->retry_unthrottle_workqueue, | |
1334 | hso_unthrottle_workfunc); | |
ab153d84 DM |
1335 | result = hso_start_serial_device(serial->parent, GFP_KERNEL); |
1336 | if (result) { | |
72dc1c09 GKH |
1337 | hso_stop_serial_device(serial->parent); |
1338 | serial->open_count--; | |
ab153d84 | 1339 | kref_put(&serial->parent->ref, hso_serial_ref_free); |
72dc1c09 GKH |
1340 | } |
1341 | } else { | |
1342 | D1("Port was already open"); | |
1343 | } | |
1344 | ||
1345 | usb_autopm_put_interface(serial->parent->interface); | |
1346 | ||
1347 | /* done */ | |
ab153d84 | 1348 | if (result) |
72dc1c09 GKH |
1349 | hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0); |
1350 | err_out: | |
ab153d84 DM |
1351 | mutex_unlock(&serial->parent->mutex); |
1352 | return result; | |
72dc1c09 GKH |
1353 | } |
1354 | ||
1355 | /* close the requested serial port */ | |
1356 | static void hso_serial_close(struct tty_struct *tty, struct file *filp) | |
1357 | { | |
1358 | struct hso_serial *serial = tty->driver_data; | |
1359 | u8 usb_gone; | |
1360 | ||
1361 | D1("Closing serial port"); | |
1362 | ||
e136e303 AC |
1363 | /* Open failed, no close cleanup required */ |
1364 | if (serial == NULL) | |
1365 | return; | |
1366 | ||
ab153d84 | 1367 | mutex_lock(&serial->parent->mutex); |
72dc1c09 GKH |
1368 | usb_gone = serial->parent->usb_gone; |
1369 | ||
1370 | if (!usb_gone) | |
1371 | usb_autopm_get_interface(serial->parent->interface); | |
1372 | ||
1373 | /* reset the rts and dtr */ | |
1374 | /* do the actual close */ | |
1375 | serial->open_count--; | |
dcfcb256 | 1376 | |
72dc1c09 | 1377 | if (serial->open_count <= 0) { |
72dc1c09 | 1378 | serial->open_count = 0; |
e136e303 AC |
1379 | spin_lock_irq(&serial->serial_lock); |
1380 | if (serial->tty == tty) { | |
72dc1c09 GKH |
1381 | serial->tty->driver_data = NULL; |
1382 | serial->tty = NULL; | |
e136e303 | 1383 | tty_kref_put(tty); |
72dc1c09 | 1384 | } |
e136e303 | 1385 | spin_unlock_irq(&serial->serial_lock); |
72dc1c09 GKH |
1386 | if (!usb_gone) |
1387 | hso_stop_serial_device(serial->parent); | |
8ef5ba63 DJB |
1388 | tasklet_kill(&serial->unthrottle_tasklet); |
1389 | cancel_work_sync(&serial->retry_unthrottle_workqueue); | |
72dc1c09 | 1390 | } |
8ef5ba63 | 1391 | |
72dc1c09 GKH |
1392 | if (!usb_gone) |
1393 | usb_autopm_put_interface(serial->parent->interface); | |
ab153d84 DM |
1394 | |
1395 | mutex_unlock(&serial->parent->mutex); | |
dcfcb256 AK |
1396 | |
1397 | kref_put(&serial->parent->ref, hso_serial_ref_free); | |
72dc1c09 GKH |
1398 | } |
1399 | ||
1400 | /* close the requested serial port */ | |
1401 | static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf, | |
1402 | int count) | |
1403 | { | |
1404 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1405 | int space, tx_bytes; | |
1406 | unsigned long flags; | |
1407 | ||
1408 | /* sanity check */ | |
1409 | if (serial == NULL) { | |
1410 | printk(KERN_ERR "%s: serial is NULL\n", __func__); | |
1411 | return -ENODEV; | |
1412 | } | |
1413 | ||
1414 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1415 | ||
1416 | space = serial->tx_data_length - serial->tx_buffer_count; | |
1417 | tx_bytes = (count < space) ? count : space; | |
1418 | ||
1419 | if (!tx_bytes) | |
1420 | goto out; | |
1421 | ||
1422 | memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes); | |
1423 | serial->tx_buffer_count += tx_bytes; | |
1424 | ||
1425 | out: | |
1426 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1427 | ||
1428 | hso_kick_transmit(serial); | |
1429 | /* done */ | |
1430 | return tx_bytes; | |
1431 | } | |
1432 | ||
1433 | /* how much room is there for writing */ | |
1434 | static int hso_serial_write_room(struct tty_struct *tty) | |
1435 | { | |
1436 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1437 | int room; | |
1438 | unsigned long flags; | |
1439 | ||
1440 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1441 | room = serial->tx_data_length - serial->tx_buffer_count; | |
1442 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1443 | ||
1444 | /* return free room */ | |
1445 | return room; | |
1446 | } | |
1447 | ||
1448 | /* setup the term */ | |
1449 | static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old) | |
1450 | { | |
1451 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1452 | unsigned long flags; | |
1453 | ||
1454 | if (old) | |
1455 | D5("Termios called with: cflags new[%d] - old[%d]", | |
1456 | tty->termios->c_cflag, old->c_cflag); | |
1457 | ||
1458 | /* the actual setup */ | |
1459 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1460 | if (serial->open_count) | |
1461 | _hso_serial_set_termios(tty, old); | |
1462 | else | |
1463 | tty->termios = old; | |
1464 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1465 | ||
1466 | /* done */ | |
72dc1c09 GKH |
1467 | } |
1468 | ||
1469 | /* how many characters in the buffer */ | |
1470 | static int hso_serial_chars_in_buffer(struct tty_struct *tty) | |
1471 | { | |
1472 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1473 | int chars; | |
1474 | unsigned long flags; | |
1475 | ||
1476 | /* sanity check */ | |
1477 | if (serial == NULL) | |
1478 | return 0; | |
1479 | ||
1480 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1481 | chars = serial->tx_buffer_count; | |
1482 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1483 | ||
1484 | return chars; | |
1485 | } | |
0227abc9 HE |
1486 | static int tiocmget_submit_urb(struct hso_serial *serial, |
1487 | struct hso_tiocmget *tiocmget, | |
1488 | struct usb_device *usb) | |
542f5482 DJB |
1489 | { |
1490 | int result; | |
1491 | ||
1492 | if (serial->parent->usb_gone) | |
1493 | return -ENODEV; | |
1494 | usb_fill_int_urb(tiocmget->urb, usb, | |
1495 | usb_rcvintpipe(usb, | |
1496 | tiocmget->endp-> | |
1497 | bEndpointAddress & 0x7F), | |
1498 | &tiocmget->serial_state_notification, | |
1499 | sizeof(struct hso_serial_state_notification), | |
1500 | tiocmget_intr_callback, serial, | |
1501 | tiocmget->endp->bInterval); | |
1502 | result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC); | |
1503 | if (result) { | |
1504 | dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__, | |
1505 | result); | |
1506 | } | |
1507 | return result; | |
1508 | ||
1509 | } | |
1510 | ||
1511 | static void tiocmget_intr_callback(struct urb *urb) | |
1512 | { | |
1513 | struct hso_serial *serial = urb->context; | |
1514 | struct hso_tiocmget *tiocmget; | |
1515 | int status = urb->status; | |
1516 | u16 UART_state_bitmap, prev_UART_state_bitmap; | |
1517 | struct uart_icount *icount; | |
1518 | struct hso_serial_state_notification *serial_state_notification; | |
1519 | struct usb_device *usb; | |
1520 | ||
1521 | /* Sanity checks */ | |
1522 | if (!serial) | |
1523 | return; | |
1524 | if (status) { | |
68a351c5 | 1525 | handle_usb_error(status, __func__, serial->parent); |
542f5482 DJB |
1526 | return; |
1527 | } | |
1528 | tiocmget = serial->tiocmget; | |
1529 | if (!tiocmget) | |
1530 | return; | |
1531 | usb = serial->parent->usb; | |
1532 | serial_state_notification = &tiocmget->serial_state_notification; | |
1533 | if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE || | |
1534 | serial_state_notification->bNotification != B_NOTIFICATION || | |
1535 | le16_to_cpu(serial_state_notification->wValue) != W_VALUE || | |
1536 | le16_to_cpu(serial_state_notification->wIndex) != W_INDEX || | |
1537 | le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) { | |
1538 | dev_warn(&usb->dev, | |
1539 | "hso received invalid serial state notification\n"); | |
1540 | DUMP(serial_state_notification, | |
9ce673d5 | 1541 | sizeof(struct hso_serial_state_notification)); |
542f5482 DJB |
1542 | } else { |
1543 | ||
1544 | UART_state_bitmap = le16_to_cpu(serial_state_notification-> | |
1545 | UART_state_bitmap); | |
1546 | prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap; | |
1547 | icount = &tiocmget->icount; | |
1548 | spin_lock(&serial->serial_lock); | |
1549 | if ((UART_state_bitmap & B_OVERRUN) != | |
1550 | (prev_UART_state_bitmap & B_OVERRUN)) | |
1551 | icount->parity++; | |
1552 | if ((UART_state_bitmap & B_PARITY) != | |
1553 | (prev_UART_state_bitmap & B_PARITY)) | |
1554 | icount->parity++; | |
1555 | if ((UART_state_bitmap & B_FRAMING) != | |
1556 | (prev_UART_state_bitmap & B_FRAMING)) | |
1557 | icount->frame++; | |
1558 | if ((UART_state_bitmap & B_RING_SIGNAL) && | |
1559 | !(prev_UART_state_bitmap & B_RING_SIGNAL)) | |
1560 | icount->rng++; | |
1561 | if ((UART_state_bitmap & B_BREAK) != | |
1562 | (prev_UART_state_bitmap & B_BREAK)) | |
1563 | icount->brk++; | |
1564 | if ((UART_state_bitmap & B_TX_CARRIER) != | |
1565 | (prev_UART_state_bitmap & B_TX_CARRIER)) | |
1566 | icount->dsr++; | |
1567 | if ((UART_state_bitmap & B_RX_CARRIER) != | |
1568 | (prev_UART_state_bitmap & B_RX_CARRIER)) | |
1569 | icount->dcd++; | |
1570 | tiocmget->prev_UART_state_bitmap = UART_state_bitmap; | |
1571 | spin_unlock(&serial->serial_lock); | |
1572 | tiocmget->intr_completed = 1; | |
1573 | wake_up_interruptible(&tiocmget->waitq); | |
1574 | } | |
1575 | memset(serial_state_notification, 0, | |
1576 | sizeof(struct hso_serial_state_notification)); | |
1577 | tiocmget_submit_urb(serial, | |
1578 | tiocmget, | |
1579 | serial->parent->usb); | |
1580 | } | |
1581 | ||
1582 | /* | |
1583 | * next few functions largely stolen from drivers/serial/serial_core.c | |
1584 | */ | |
1585 | /* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
1586 | * - mask passed in arg for lines of interest | |
1587 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
1588 | * Caller should use TIOCGICOUNT to see which one it was | |
1589 | */ | |
1590 | static int | |
1591 | hso_wait_modem_status(struct hso_serial *serial, unsigned long arg) | |
1592 | { | |
1593 | DECLARE_WAITQUEUE(wait, current); | |
1594 | struct uart_icount cprev, cnow; | |
1595 | struct hso_tiocmget *tiocmget; | |
1596 | int ret; | |
1597 | ||
1598 | tiocmget = serial->tiocmget; | |
1599 | if (!tiocmget) | |
1600 | return -ENOENT; | |
1601 | /* | |
1602 | * note the counters on entry | |
1603 | */ | |
1604 | spin_lock_irq(&serial->serial_lock); | |
1605 | memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount)); | |
1606 | spin_unlock_irq(&serial->serial_lock); | |
1607 | add_wait_queue(&tiocmget->waitq, &wait); | |
1608 | for (;;) { | |
1609 | spin_lock_irq(&serial->serial_lock); | |
1610 | memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount)); | |
1611 | spin_unlock_irq(&serial->serial_lock); | |
1612 | set_current_state(TASK_INTERRUPTIBLE); | |
1613 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1614 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1615 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) { | |
1616 | ret = 0; | |
1617 | break; | |
1618 | } | |
1619 | schedule(); | |
1620 | /* see if a signal did it */ | |
1621 | if (signal_pending(current)) { | |
1622 | ret = -ERESTARTSYS; | |
1623 | break; | |
1624 | } | |
1625 | cprev = cnow; | |
1626 | } | |
1627 | current->state = TASK_RUNNING; | |
1628 | remove_wait_queue(&tiocmget->waitq, &wait); | |
1629 | ||
1630 | return ret; | |
1631 | } | |
1632 | ||
1633 | /* | |
1634 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
1635 | * Return: write counters to the user passed counter struct | |
1636 | * NB: both 1->0 and 0->1 transitions are counted except for | |
1637 | * RI where only 0->1 is counted. | |
1638 | */ | |
1639 | static int hso_get_count(struct hso_serial *serial, | |
1640 | struct serial_icounter_struct __user *icnt) | |
1641 | { | |
1642 | struct serial_icounter_struct icount; | |
1643 | struct uart_icount cnow; | |
1644 | struct hso_tiocmget *tiocmget = serial->tiocmget; | |
1645 | ||
1646 | if (!tiocmget) | |
1647 | return -ENOENT; | |
1648 | spin_lock_irq(&serial->serial_lock); | |
1649 | memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount)); | |
1650 | spin_unlock_irq(&serial->serial_lock); | |
1651 | ||
1652 | icount.cts = cnow.cts; | |
1653 | icount.dsr = cnow.dsr; | |
1654 | icount.rng = cnow.rng; | |
1655 | icount.dcd = cnow.dcd; | |
1656 | icount.rx = cnow.rx; | |
1657 | icount.tx = cnow.tx; | |
1658 | icount.frame = cnow.frame; | |
1659 | icount.overrun = cnow.overrun; | |
1660 | icount.parity = cnow.parity; | |
1661 | icount.brk = cnow.brk; | |
1662 | icount.buf_overrun = cnow.buf_overrun; | |
1663 | ||
1664 | return copy_to_user(icnt, &icount, sizeof(icount)) ? -EFAULT : 0; | |
1665 | } | |
1666 | ||
72dc1c09 GKH |
1667 | |
1668 | static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file) | |
1669 | { | |
542f5482 | 1670 | int retval; |
72dc1c09 | 1671 | struct hso_serial *serial = get_serial_by_tty(tty); |
542f5482 DJB |
1672 | struct hso_tiocmget *tiocmget; |
1673 | u16 UART_state_bitmap; | |
72dc1c09 GKH |
1674 | |
1675 | /* sanity check */ | |
1676 | if (!serial) { | |
1677 | D1("no tty structures"); | |
1678 | return -EINVAL; | |
1679 | } | |
542f5482 DJB |
1680 | spin_lock_irq(&serial->serial_lock); |
1681 | retval = ((serial->rts_state) ? TIOCM_RTS : 0) | | |
72dc1c09 | 1682 | ((serial->dtr_state) ? TIOCM_DTR : 0); |
542f5482 DJB |
1683 | tiocmget = serial->tiocmget; |
1684 | if (tiocmget) { | |
1685 | ||
1686 | UART_state_bitmap = le16_to_cpu( | |
1687 | tiocmget->prev_UART_state_bitmap); | |
1688 | if (UART_state_bitmap & B_RING_SIGNAL) | |
1689 | retval |= TIOCM_RNG; | |
1690 | if (UART_state_bitmap & B_RX_CARRIER) | |
1691 | retval |= TIOCM_CD; | |
1692 | if (UART_state_bitmap & B_TX_CARRIER) | |
1693 | retval |= TIOCM_DSR; | |
1694 | } | |
1695 | spin_unlock_irq(&serial->serial_lock); | |
1696 | return retval; | |
72dc1c09 GKH |
1697 | } |
1698 | ||
1699 | static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file, | |
1700 | unsigned int set, unsigned int clear) | |
1701 | { | |
1702 | int val = 0; | |
1703 | unsigned long flags; | |
1704 | int if_num; | |
1705 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1706 | ||
1707 | /* sanity check */ | |
1708 | if (!serial) { | |
1709 | D1("no tty structures"); | |
1710 | return -EINVAL; | |
1711 | } | |
0e0367e9 JD |
1712 | |
1713 | if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM) | |
1714 | return -EINVAL; | |
1715 | ||
72dc1c09 GKH |
1716 | if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber; |
1717 | ||
1718 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1719 | if (set & TIOCM_RTS) | |
1720 | serial->rts_state = 1; | |
1721 | if (set & TIOCM_DTR) | |
1722 | serial->dtr_state = 1; | |
1723 | ||
1724 | if (clear & TIOCM_RTS) | |
1725 | serial->rts_state = 0; | |
1726 | if (clear & TIOCM_DTR) | |
1727 | serial->dtr_state = 0; | |
1728 | ||
1729 | if (serial->dtr_state) | |
1730 | val |= 0x01; | |
1731 | if (serial->rts_state) | |
1732 | val |= 0x02; | |
1733 | ||
1734 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1735 | ||
1736 | return usb_control_msg(serial->parent->usb, | |
1737 | usb_rcvctrlpipe(serial->parent->usb, 0), 0x22, | |
1738 | 0x21, val, if_num, NULL, 0, | |
1739 | USB_CTRL_SET_TIMEOUT); | |
1740 | } | |
1741 | ||
542f5482 DJB |
1742 | static int hso_serial_ioctl(struct tty_struct *tty, struct file *file, |
1743 | unsigned int cmd, unsigned long arg) | |
1744 | { | |
1745 | struct hso_serial *serial = get_serial_by_tty(tty); | |
1746 | void __user *uarg = (void __user *)arg; | |
1747 | int ret = 0; | |
1748 | D4("IOCTL cmd: %d, arg: %ld", cmd, arg); | |
1749 | ||
1750 | if (!serial) | |
1751 | return -ENODEV; | |
1752 | switch (cmd) { | |
1753 | case TIOCMIWAIT: | |
1754 | ret = hso_wait_modem_status(serial, arg); | |
1755 | break; | |
1756 | ||
1757 | case TIOCGICOUNT: | |
1758 | ret = hso_get_count(serial, uarg); | |
1759 | break; | |
1760 | default: | |
1761 | ret = -ENOIOCTLCMD; | |
1762 | break; | |
1763 | } | |
1764 | return ret; | |
1765 | } | |
1766 | ||
1767 | ||
72dc1c09 GKH |
1768 | /* starts a transmit */ |
1769 | static void hso_kick_transmit(struct hso_serial *serial) | |
1770 | { | |
1771 | u8 *temp; | |
1772 | unsigned long flags; | |
1773 | int res; | |
1774 | ||
1775 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1776 | if (!serial->tx_buffer_count) | |
1777 | goto out; | |
1778 | ||
1779 | if (serial->tx_urb_used) | |
1780 | goto out; | |
1781 | ||
1782 | /* Wakeup USB interface if necessary */ | |
1783 | if (hso_get_activity(serial->parent) == -EAGAIN) | |
1784 | goto out; | |
1785 | ||
1786 | /* Switch pointers around to avoid memcpy */ | |
1787 | temp = serial->tx_buffer; | |
1788 | serial->tx_buffer = serial->tx_data; | |
1789 | serial->tx_data = temp; | |
1790 | serial->tx_data_count = serial->tx_buffer_count; | |
1791 | serial->tx_buffer_count = 0; | |
1792 | ||
1793 | /* If temp is set, it means we switched buffers */ | |
1794 | if (temp && serial->write_data) { | |
1795 | res = serial->write_data(serial); | |
1796 | if (res >= 0) | |
1797 | serial->tx_urb_used = 1; | |
1798 | } | |
1799 | out: | |
1800 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1801 | } | |
1802 | ||
1803 | /* make a request (for reading and writing data to muxed serial port) */ | |
1804 | static int mux_device_request(struct hso_serial *serial, u8 type, u16 port, | |
1805 | struct urb *ctrl_urb, | |
1806 | struct usb_ctrlrequest *ctrl_req, | |
1807 | u8 *ctrl_urb_data, u32 size) | |
1808 | { | |
1809 | int result; | |
1810 | int pipe; | |
1811 | ||
1812 | /* Sanity check */ | |
1813 | if (!serial || !ctrl_urb || !ctrl_req) { | |
1814 | printk(KERN_ERR "%s: Wrong arguments\n", __func__); | |
1815 | return -EINVAL; | |
1816 | } | |
1817 | ||
1818 | /* initialize */ | |
1819 | ctrl_req->wValue = 0; | |
b74f62c1 DJB |
1820 | ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port)); |
1821 | ctrl_req->wLength = cpu_to_le16(size); | |
72dc1c09 GKH |
1822 | |
1823 | if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) { | |
1824 | /* Reading command */ | |
1825 | ctrl_req->bRequestType = USB_DIR_IN | | |
1826 | USB_TYPE_OPTION_VENDOR | | |
1827 | USB_RECIP_INTERFACE; | |
1828 | ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE; | |
1829 | pipe = usb_rcvctrlpipe(serial->parent->usb, 0); | |
1830 | } else { | |
1831 | /* Writing command */ | |
1832 | ctrl_req->bRequestType = USB_DIR_OUT | | |
1833 | USB_TYPE_OPTION_VENDOR | | |
1834 | USB_RECIP_INTERFACE; | |
1835 | ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND; | |
1836 | pipe = usb_sndctrlpipe(serial->parent->usb, 0); | |
1837 | } | |
1838 | /* syslog */ | |
1839 | D2("%s command (%02x) len: %d, port: %d", | |
1840 | type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write", | |
1841 | ctrl_req->bRequestType, ctrl_req->wLength, port); | |
1842 | ||
1843 | /* Load ctrl urb */ | |
1844 | ctrl_urb->transfer_flags = 0; | |
1845 | usb_fill_control_urb(ctrl_urb, | |
1846 | serial->parent->usb, | |
1847 | pipe, | |
1848 | (u8 *) ctrl_req, | |
1849 | ctrl_urb_data, size, ctrl_callback, serial); | |
1850 | /* Send it on merry way */ | |
1851 | result = usb_submit_urb(ctrl_urb, GFP_ATOMIC); | |
1852 | if (result) { | |
1853 | dev_err(&ctrl_urb->dev->dev, | |
8a5c9c49 | 1854 | "%s failed submit ctrl_urb %d type %d\n", __func__, |
72dc1c09 GKH |
1855 | result, type); |
1856 | return result; | |
1857 | } | |
1858 | ||
1859 | /* done */ | |
1860 | return size; | |
1861 | } | |
1862 | ||
1863 | /* called by intr_callback when read occurs */ | |
1864 | static int hso_mux_serial_read(struct hso_serial *serial) | |
1865 | { | |
1866 | if (!serial) | |
1867 | return -EINVAL; | |
1868 | ||
1869 | /* clean data */ | |
1870 | memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE); | |
1871 | /* make the request */ | |
1872 | ||
1873 | if (serial->num_rx_urbs != 1) { | |
1874 | dev_err(&serial->parent->interface->dev, | |
1875 | "ERROR: mux'd reads with multiple buffers " | |
1876 | "not possible\n"); | |
1877 | return 0; | |
1878 | } | |
1879 | return mux_device_request(serial, | |
1880 | USB_CDC_GET_ENCAPSULATED_RESPONSE, | |
1881 | serial->parent->port_spec & HSO_PORT_MASK, | |
1882 | serial->rx_urb[0], | |
1883 | &serial->ctrl_req_rx, | |
1884 | serial->rx_data[0], serial->rx_data_length); | |
1885 | } | |
1886 | ||
1887 | /* used for muxed serial port callback (muxed serial read) */ | |
1888 | static void intr_callback(struct urb *urb) | |
1889 | { | |
1890 | struct hso_shared_int *shared_int = urb->context; | |
1891 | struct hso_serial *serial; | |
1892 | unsigned char *port_req; | |
1893 | int status = urb->status; | |
1894 | int i; | |
1895 | ||
1896 | usb_mark_last_busy(urb->dev); | |
1897 | ||
1898 | /* sanity check */ | |
1899 | if (!shared_int) | |
1900 | return; | |
1901 | ||
1902 | /* status check */ | |
1903 | if (status) { | |
68a351c5 | 1904 | handle_usb_error(status, __func__, NULL); |
72dc1c09 GKH |
1905 | return; |
1906 | } | |
1907 | D4("\n--- Got intr callback 0x%02X ---", status); | |
1908 | ||
1909 | /* what request? */ | |
1910 | port_req = urb->transfer_buffer; | |
1911 | D4(" port_req = 0x%.2X\n", *port_req); | |
1912 | /* loop over all muxed ports to find the one sending this */ | |
1913 | for (i = 0; i < 8; i++) { | |
1914 | /* max 8 channels on MUX */ | |
1915 | if (*port_req & (1 << i)) { | |
1916 | serial = get_serial_by_shared_int_and_type(shared_int, | |
1917 | (1 << i)); | |
1918 | if (serial != NULL) { | |
1919 | D1("Pending read interrupt on port %d\n", i); | |
8ef5ba63 | 1920 | spin_lock(&serial->serial_lock); |
f4763e96 JD |
1921 | if (serial->rx_state == RX_IDLE && |
1922 | serial->open_count > 0) { | |
72dc1c09 GKH |
1923 | /* Setup and send a ctrl req read on |
1924 | * port i */ | |
f4763e96 | 1925 | if (!serial->rx_urb_filled[0]) { |
8ef5ba63 DJB |
1926 | serial->rx_state = RX_SENT; |
1927 | hso_mux_serial_read(serial); | |
1928 | } else | |
1929 | serial->rx_state = RX_PENDING; | |
72dc1c09 | 1930 | } else { |
f4763e96 JD |
1931 | D1("Already a read pending on " |
1932 | "port %d or port not open\n", i); | |
72dc1c09 | 1933 | } |
8ef5ba63 | 1934 | spin_unlock(&serial->serial_lock); |
72dc1c09 GKH |
1935 | } |
1936 | } | |
1937 | } | |
1938 | /* Resubmit interrupt urb */ | |
1939 | hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC); | |
1940 | } | |
1941 | ||
1942 | /* called for writing to muxed serial port */ | |
1943 | static int hso_mux_serial_write_data(struct hso_serial *serial) | |
1944 | { | |
1945 | if (NULL == serial) | |
1946 | return -EINVAL; | |
1947 | ||
1948 | return mux_device_request(serial, | |
1949 | USB_CDC_SEND_ENCAPSULATED_COMMAND, | |
1950 | serial->parent->port_spec & HSO_PORT_MASK, | |
1951 | serial->tx_urb, | |
1952 | &serial->ctrl_req_tx, | |
1953 | serial->tx_data, serial->tx_data_count); | |
1954 | } | |
1955 | ||
1956 | /* write callback for Diag and CS port */ | |
1957 | static void hso_std_serial_write_bulk_callback(struct urb *urb) | |
1958 | { | |
1959 | struct hso_serial *serial = urb->context; | |
1960 | int status = urb->status; | |
e136e303 | 1961 | struct tty_struct *tty; |
72dc1c09 GKH |
1962 | |
1963 | /* sanity check */ | |
1964 | if (!serial) { | |
1965 | D1("serial == NULL"); | |
1966 | return; | |
1967 | } | |
1968 | ||
1969 | spin_lock(&serial->serial_lock); | |
1970 | serial->tx_urb_used = 0; | |
e136e303 | 1971 | tty = tty_kref_get(serial->tty); |
72dc1c09 GKH |
1972 | spin_unlock(&serial->serial_lock); |
1973 | if (status) { | |
68a351c5 | 1974 | handle_usb_error(status, __func__, serial->parent); |
e136e303 | 1975 | tty_kref_put(tty); |
72dc1c09 GKH |
1976 | return; |
1977 | } | |
1978 | hso_put_activity(serial->parent); | |
e136e303 AC |
1979 | if (tty) { |
1980 | tty_wakeup(tty); | |
1981 | tty_kref_put(tty); | |
1982 | } | |
72dc1c09 GKH |
1983 | hso_kick_transmit(serial); |
1984 | ||
1985 | D1(" "); | |
72dc1c09 GKH |
1986 | } |
1987 | ||
1988 | /* called for writing diag or CS serial port */ | |
1989 | static int hso_std_serial_write_data(struct hso_serial *serial) | |
1990 | { | |
1991 | int count = serial->tx_data_count; | |
1992 | int result; | |
1993 | ||
1994 | usb_fill_bulk_urb(serial->tx_urb, | |
1995 | serial->parent->usb, | |
1996 | usb_sndbulkpipe(serial->parent->usb, | |
1997 | serial->out_endp-> | |
1998 | bEndpointAddress & 0x7F), | |
1999 | serial->tx_data, serial->tx_data_count, | |
2000 | hso_std_serial_write_bulk_callback, serial); | |
2001 | ||
2002 | result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC); | |
2003 | if (result) { | |
2004 | dev_warn(&serial->parent->usb->dev, | |
2005 | "Failed to submit urb - res %d\n", result); | |
2006 | return result; | |
2007 | } | |
2008 | ||
2009 | return count; | |
2010 | } | |
2011 | ||
2012 | /* callback after read or write on muxed serial port */ | |
2013 | static void ctrl_callback(struct urb *urb) | |
2014 | { | |
2015 | struct hso_serial *serial = urb->context; | |
2016 | struct usb_ctrlrequest *req; | |
2017 | int status = urb->status; | |
e136e303 | 2018 | struct tty_struct *tty; |
72dc1c09 GKH |
2019 | |
2020 | /* sanity check */ | |
2021 | if (!serial) | |
2022 | return; | |
2023 | ||
2024 | spin_lock(&serial->serial_lock); | |
2025 | serial->tx_urb_used = 0; | |
e136e303 | 2026 | tty = tty_kref_get(serial->tty); |
72dc1c09 GKH |
2027 | spin_unlock(&serial->serial_lock); |
2028 | if (status) { | |
68a351c5 | 2029 | handle_usb_error(status, __func__, serial->parent); |
e136e303 | 2030 | tty_kref_put(tty); |
72dc1c09 GKH |
2031 | return; |
2032 | } | |
2033 | ||
2034 | /* what request? */ | |
2035 | req = (struct usb_ctrlrequest *)(urb->setup_packet); | |
2036 | D4("\n--- Got muxed ctrl callback 0x%02X ---", status); | |
2037 | D4("Actual length of urb = %d\n", urb->actual_length); | |
2038 | DUMP1(urb->transfer_buffer, urb->actual_length); | |
2039 | ||
2040 | if (req->bRequestType == | |
2041 | (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) { | |
2042 | /* response to a read command */ | |
8ef5ba63 DJB |
2043 | serial->rx_urb_filled[0] = 1; |
2044 | spin_lock(&serial->serial_lock); | |
2045 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); | |
2046 | spin_unlock(&serial->serial_lock); | |
72dc1c09 GKH |
2047 | } else { |
2048 | hso_put_activity(serial->parent); | |
e136e303 AC |
2049 | if (tty) |
2050 | tty_wakeup(tty); | |
72dc1c09 GKH |
2051 | /* response to a write command */ |
2052 | hso_kick_transmit(serial); | |
2053 | } | |
e136e303 | 2054 | tty_kref_put(tty); |
72dc1c09 GKH |
2055 | } |
2056 | ||
2057 | /* handle RX data for serial port */ | |
8ef5ba63 | 2058 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial) |
72dc1c09 | 2059 | { |
e136e303 | 2060 | struct tty_struct *tty; |
8ef5ba63 DJB |
2061 | int write_length_remaining = 0; |
2062 | int curr_write_len; | |
e136e303 | 2063 | |
72dc1c09 GKH |
2064 | /* Sanity check */ |
2065 | if (urb == NULL || serial == NULL) { | |
2066 | D1("serial = NULL"); | |
8ef5ba63 | 2067 | return -2; |
72dc1c09 GKH |
2068 | } |
2069 | ||
d45eb81c | 2070 | /* All callers to put_rxbuf_data hold serial_lock */ |
e136e303 | 2071 | tty = tty_kref_get(serial->tty); |
e136e303 | 2072 | |
72dc1c09 | 2073 | /* Push data to tty */ |
8ef5ba63 DJB |
2074 | if (tty) { |
2075 | write_length_remaining = urb->actual_length - | |
2076 | serial->curr_rx_urb_offset; | |
72dc1c09 | 2077 | D1("data to push to tty"); |
8ef5ba63 | 2078 | while (write_length_remaining) { |
5839b414 DJB |
2079 | if (test_bit(TTY_THROTTLED, &tty->flags)) { |
2080 | tty_kref_put(tty); | |
8ef5ba63 | 2081 | return -1; |
5839b414 | 2082 | } |
8ef5ba63 DJB |
2083 | curr_write_len = tty_insert_flip_string |
2084 | (tty, urb->transfer_buffer + | |
2085 | serial->curr_rx_urb_offset, | |
2086 | write_length_remaining); | |
2087 | serial->curr_rx_urb_offset += curr_write_len; | |
2088 | write_length_remaining -= curr_write_len; | |
2089 | tty_flip_buffer_push(tty); | |
72dc1c09 | 2090 | } |
72dc1c09 | 2091 | } |
8ef5ba63 DJB |
2092 | if (write_length_remaining == 0) { |
2093 | serial->curr_rx_urb_offset = 0; | |
2094 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; | |
72dc1c09 | 2095 | } |
e136e303 | 2096 | tty_kref_put(tty); |
8ef5ba63 | 2097 | return write_length_remaining; |
72dc1c09 GKH |
2098 | } |
2099 | ||
8ef5ba63 | 2100 | |
72dc1c09 GKH |
2101 | /* Base driver functions */ |
2102 | ||
2103 | static void hso_log_port(struct hso_device *hso_dev) | |
2104 | { | |
2105 | char *port_type; | |
2106 | char port_dev[20]; | |
2107 | ||
2108 | switch (hso_dev->port_spec & HSO_PORT_MASK) { | |
2109 | case HSO_PORT_CONTROL: | |
2110 | port_type = "Control"; | |
2111 | break; | |
2112 | case HSO_PORT_APP: | |
2113 | port_type = "Application"; | |
2114 | break; | |
2115 | case HSO_PORT_GPS: | |
2116 | port_type = "GPS"; | |
2117 | break; | |
2118 | case HSO_PORT_GPS_CONTROL: | |
2119 | port_type = "GPS control"; | |
2120 | break; | |
2121 | case HSO_PORT_APP2: | |
2122 | port_type = "Application2"; | |
2123 | break; | |
2124 | case HSO_PORT_PCSC: | |
2125 | port_type = "PCSC"; | |
2126 | break; | |
2127 | case HSO_PORT_DIAG: | |
2128 | port_type = "Diagnostic"; | |
2129 | break; | |
2130 | case HSO_PORT_DIAG2: | |
2131 | port_type = "Diagnostic2"; | |
2132 | break; | |
2133 | case HSO_PORT_MODEM: | |
2134 | port_type = "Modem"; | |
2135 | break; | |
2136 | case HSO_PORT_NETWORK: | |
2137 | port_type = "Network"; | |
2138 | break; | |
2139 | default: | |
2140 | port_type = "Unknown"; | |
2141 | break; | |
2142 | } | |
2143 | if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { | |
2144 | sprintf(port_dev, "%s", dev2net(hso_dev)->net->name); | |
2145 | } else | |
2146 | sprintf(port_dev, "/dev/%s%d", tty_filename, | |
2147 | dev2ser(hso_dev)->minor); | |
2148 | ||
2149 | dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n", | |
2150 | port_type, port_dev); | |
2151 | } | |
2152 | ||
2153 | static int hso_start_net_device(struct hso_device *hso_dev) | |
2154 | { | |
2155 | int i, result = 0; | |
2156 | struct hso_net *hso_net = dev2net(hso_dev); | |
2157 | ||
2158 | if (!hso_net) | |
2159 | return -ENODEV; | |
2160 | ||
2161 | /* send URBs for all read buffers */ | |
2162 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2163 | ||
2164 | /* Prep a receive URB */ | |
2165 | usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i], | |
2166 | hso_dev->usb, | |
2167 | usb_rcvbulkpipe(hso_dev->usb, | |
2168 | hso_net->in_endp-> | |
2169 | bEndpointAddress & 0x7F), | |
2170 | hso_net->mux_bulk_rx_buf_pool[i], | |
2171 | MUX_BULK_RX_BUF_SIZE, read_bulk_callback, | |
2172 | hso_net); | |
2173 | ||
2174 | /* Put it out there so the device can send us stuff */ | |
2175 | result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i], | |
2176 | GFP_NOIO); | |
2177 | if (result) | |
2178 | dev_warn(&hso_dev->usb->dev, | |
2179 | "%s failed mux_bulk_rx_urb[%d] %d\n", __func__, | |
2180 | i, result); | |
2181 | } | |
2182 | ||
2183 | return result; | |
2184 | } | |
2185 | ||
2186 | static int hso_stop_net_device(struct hso_device *hso_dev) | |
2187 | { | |
2188 | int i; | |
2189 | struct hso_net *hso_net = dev2net(hso_dev); | |
2190 | ||
2191 | if (!hso_net) | |
2192 | return -ENODEV; | |
2193 | ||
2194 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2195 | if (hso_net->mux_bulk_rx_urb_pool[i]) | |
2196 | usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]); | |
2197 | ||
2198 | } | |
2199 | if (hso_net->mux_bulk_tx_urb) | |
2200 | usb_kill_urb(hso_net->mux_bulk_tx_urb); | |
2201 | ||
2202 | return 0; | |
2203 | } | |
2204 | ||
2205 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags) | |
2206 | { | |
2207 | int i, result = 0; | |
2208 | struct hso_serial *serial = dev2ser(hso_dev); | |
2209 | ||
2210 | if (!serial) | |
2211 | return -ENODEV; | |
2212 | ||
2213 | /* If it is not the MUX port fill in and submit a bulk urb (already | |
2214 | * allocated in hso_serial_start) */ | |
2215 | if (!(serial->parent->port_spec & HSO_INTF_MUX)) { | |
2216 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2217 | usb_fill_bulk_urb(serial->rx_urb[i], | |
2218 | serial->parent->usb, | |
2219 | usb_rcvbulkpipe(serial->parent->usb, | |
2220 | serial->in_endp-> | |
2221 | bEndpointAddress & | |
2222 | 0x7F), | |
2223 | serial->rx_data[i], | |
2224 | serial->rx_data_length, | |
2225 | hso_std_serial_read_bulk_callback, | |
2226 | serial); | |
2227 | result = usb_submit_urb(serial->rx_urb[i], flags); | |
2228 | if (result) { | |
2229 | dev_warn(&serial->parent->usb->dev, | |
2230 | "Failed to submit urb - res %d\n", | |
2231 | result); | |
2232 | break; | |
2233 | } | |
2234 | } | |
2235 | } else { | |
2236 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2237 | if (!serial->shared_int->use_count) { | |
2238 | result = | |
2239 | hso_mux_submit_intr_urb(serial->shared_int, | |
2240 | hso_dev->usb, flags); | |
2241 | } | |
2242 | serial->shared_int->use_count++; | |
2243 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2244 | } | |
542f5482 DJB |
2245 | if (serial->tiocmget) |
2246 | tiocmget_submit_urb(serial, | |
2247 | serial->tiocmget, | |
2248 | serial->parent->usb); | |
72dc1c09 GKH |
2249 | return result; |
2250 | } | |
2251 | ||
2252 | static int hso_stop_serial_device(struct hso_device *hso_dev) | |
2253 | { | |
2254 | int i; | |
2255 | struct hso_serial *serial = dev2ser(hso_dev); | |
542f5482 | 2256 | struct hso_tiocmget *tiocmget; |
72dc1c09 GKH |
2257 | |
2258 | if (!serial) | |
2259 | return -ENODEV; | |
2260 | ||
2261 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
8ef5ba63 | 2262 | if (serial->rx_urb[i]) { |
72dc1c09 | 2263 | usb_kill_urb(serial->rx_urb[i]); |
8ef5ba63 DJB |
2264 | serial->rx_urb_filled[i] = 0; |
2265 | } | |
72dc1c09 | 2266 | } |
8ef5ba63 DJB |
2267 | serial->curr_rx_urb_idx = 0; |
2268 | serial->curr_rx_urb_offset = 0; | |
72dc1c09 GKH |
2269 | |
2270 | if (serial->tx_urb) | |
2271 | usb_kill_urb(serial->tx_urb); | |
2272 | ||
2273 | if (serial->shared_int) { | |
2274 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2275 | if (serial->shared_int->use_count && | |
2276 | (--serial->shared_int->use_count == 0)) { | |
2277 | struct urb *urb; | |
2278 | ||
2279 | urb = serial->shared_int->shared_intr_urb; | |
2280 | if (urb) | |
2281 | usb_kill_urb(urb); | |
2282 | } | |
2283 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2284 | } | |
542f5482 DJB |
2285 | tiocmget = serial->tiocmget; |
2286 | if (tiocmget) { | |
2287 | wake_up_interruptible(&tiocmget->waitq); | |
2288 | usb_kill_urb(tiocmget->urb); | |
2289 | } | |
72dc1c09 GKH |
2290 | |
2291 | return 0; | |
2292 | } | |
2293 | ||
2294 | static void hso_serial_common_free(struct hso_serial *serial) | |
2295 | { | |
2296 | int i; | |
2297 | ||
2298 | if (serial->parent->dev) | |
2299 | device_remove_file(serial->parent->dev, &dev_attr_hsotype); | |
2300 | ||
2301 | tty_unregister_device(tty_drv, serial->minor); | |
2302 | ||
2303 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2304 | /* unlink and free RX URB */ | |
2305 | usb_free_urb(serial->rx_urb[i]); | |
2306 | /* free the RX buffer */ | |
2307 | kfree(serial->rx_data[i]); | |
2308 | } | |
2309 | ||
2310 | /* unlink and free TX URB */ | |
2311 | usb_free_urb(serial->tx_urb); | |
2312 | kfree(serial->tx_data); | |
2313 | } | |
2314 | ||
2315 | static int hso_serial_common_create(struct hso_serial *serial, int num_urbs, | |
2316 | int rx_size, int tx_size) | |
2317 | { | |
2318 | struct device *dev; | |
2319 | int minor; | |
2320 | int i; | |
2321 | ||
2322 | minor = get_free_serial_index(); | |
2323 | if (minor < 0) | |
2324 | goto exit; | |
2325 | ||
2326 | /* register our minor number */ | |
2327 | serial->parent->dev = tty_register_device(tty_drv, minor, | |
2328 | &serial->parent->interface->dev); | |
2329 | dev = serial->parent->dev; | |
1aec5bdf | 2330 | dev_set_drvdata(dev, serial->parent); |
72dc1c09 GKH |
2331 | i = device_create_file(dev, &dev_attr_hsotype); |
2332 | ||
2333 | /* fill in specific data for later use */ | |
2334 | serial->minor = minor; | |
2335 | serial->magic = HSO_SERIAL_MAGIC; | |
2336 | spin_lock_init(&serial->serial_lock); | |
2337 | serial->num_rx_urbs = num_urbs; | |
2338 | ||
2339 | /* RX, allocate urb and initialize */ | |
2340 | ||
2341 | /* prepare our RX buffer */ | |
2342 | serial->rx_data_length = rx_size; | |
2343 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2344 | serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL); | |
2345 | if (!serial->rx_urb[i]) { | |
2346 | dev_err(dev, "Could not allocate urb?\n"); | |
2347 | goto exit; | |
2348 | } | |
2349 | serial->rx_urb[i]->transfer_buffer = NULL; | |
2350 | serial->rx_urb[i]->transfer_buffer_length = 0; | |
2351 | serial->rx_data[i] = kzalloc(serial->rx_data_length, | |
2352 | GFP_KERNEL); | |
2353 | if (!serial->rx_data[i]) { | |
2354 | dev_err(dev, "%s - Out of memory\n", __func__); | |
2355 | goto exit; | |
2356 | } | |
2357 | } | |
2358 | ||
2359 | /* TX, allocate urb and initialize */ | |
2360 | serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2361 | if (!serial->tx_urb) { | |
2362 | dev_err(dev, "Could not allocate urb?\n"); | |
2363 | goto exit; | |
2364 | } | |
2365 | serial->tx_urb->transfer_buffer = NULL; | |
2366 | serial->tx_urb->transfer_buffer_length = 0; | |
2367 | /* prepare our TX buffer */ | |
2368 | serial->tx_data_count = 0; | |
2369 | serial->tx_buffer_count = 0; | |
2370 | serial->tx_data_length = tx_size; | |
2371 | serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL); | |
2372 | if (!serial->tx_data) { | |
8a5c9c49 | 2373 | dev_err(dev, "%s - Out of memory\n", __func__); |
72dc1c09 GKH |
2374 | goto exit; |
2375 | } | |
2376 | serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL); | |
2377 | if (!serial->tx_buffer) { | |
8a5c9c49 | 2378 | dev_err(dev, "%s - Out of memory\n", __func__); |
72dc1c09 GKH |
2379 | goto exit; |
2380 | } | |
2381 | ||
2382 | return 0; | |
2383 | exit: | |
2384 | hso_serial_common_free(serial); | |
2385 | return -1; | |
2386 | } | |
2387 | ||
72dc1c09 GKH |
2388 | /* Creates a general hso device */ |
2389 | static struct hso_device *hso_create_device(struct usb_interface *intf, | |
2390 | int port_spec) | |
2391 | { | |
2392 | struct hso_device *hso_dev; | |
2393 | ||
2394 | hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC); | |
2395 | if (!hso_dev) | |
2396 | return NULL; | |
2397 | ||
2398 | hso_dev->port_spec = port_spec; | |
2399 | hso_dev->usb = interface_to_usbdev(intf); | |
2400 | hso_dev->interface = intf; | |
2401 | kref_init(&hso_dev->ref); | |
ab153d84 DM |
2402 | mutex_init(&hso_dev->mutex); |
2403 | ||
72dc1c09 GKH |
2404 | INIT_WORK(&hso_dev->async_get_intf, async_get_intf); |
2405 | INIT_WORK(&hso_dev->async_put_intf, async_put_intf); | |
68a351c5 | 2406 | INIT_WORK(&hso_dev->reset_device, reset_device); |
72dc1c09 GKH |
2407 | |
2408 | return hso_dev; | |
2409 | } | |
2410 | ||
2411 | /* Removes a network device in the network device table */ | |
2412 | static int remove_net_device(struct hso_device *hso_dev) | |
2413 | { | |
2414 | int i; | |
2415 | ||
2416 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2417 | if (network_table[i] == hso_dev) { | |
2418 | network_table[i] = NULL; | |
2419 | break; | |
2420 | } | |
2421 | } | |
2422 | if (i == HSO_MAX_NET_DEVICES) | |
2423 | return -1; | |
2424 | return 0; | |
2425 | } | |
2426 | ||
2427 | /* Frees our network device */ | |
2428 | static void hso_free_net_device(struct hso_device *hso_dev) | |
2429 | { | |
2430 | int i; | |
2431 | struct hso_net *hso_net = dev2net(hso_dev); | |
2432 | ||
2433 | if (!hso_net) | |
2434 | return; | |
2435 | ||
3b7d2b31 JD |
2436 | remove_net_device(hso_net->parent); |
2437 | ||
2438 | if (hso_net->net) { | |
2439 | unregister_netdev(hso_net->net); | |
2440 | free_netdev(hso_net->net); | |
2441 | } | |
2442 | ||
72dc1c09 GKH |
2443 | /* start freeing */ |
2444 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2445 | usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]); | |
2446 | kfree(hso_net->mux_bulk_rx_buf_pool[i]); | |
3b7d2b31 | 2447 | hso_net->mux_bulk_rx_buf_pool[i] = NULL; |
72dc1c09 GKH |
2448 | } |
2449 | usb_free_urb(hso_net->mux_bulk_tx_urb); | |
2450 | kfree(hso_net->mux_bulk_tx_buf); | |
3b7d2b31 | 2451 | hso_net->mux_bulk_tx_buf = NULL; |
ab153d84 | 2452 | |
e44578ea | 2453 | kfree(hso_dev); |
72dc1c09 GKH |
2454 | } |
2455 | ||
c266cb4e SH |
2456 | static const struct net_device_ops hso_netdev_ops = { |
2457 | .ndo_open = hso_net_open, | |
2458 | .ndo_stop = hso_net_close, | |
2459 | .ndo_start_xmit = hso_net_start_xmit, | |
2460 | .ndo_tx_timeout = hso_net_tx_timeout, | |
2461 | }; | |
2462 | ||
72dc1c09 GKH |
2463 | /* initialize the network interface */ |
2464 | static void hso_net_init(struct net_device *net) | |
2465 | { | |
2466 | struct hso_net *hso_net = netdev_priv(net); | |
2467 | ||
2468 | D1("sizeof hso_net is %d", (int)sizeof(*hso_net)); | |
2469 | ||
2470 | /* fill in the other fields */ | |
c266cb4e | 2471 | net->netdev_ops = &hso_netdev_ops; |
72dc1c09 GKH |
2472 | net->watchdog_timeo = HSO_NET_TX_TIMEOUT; |
2473 | net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST; | |
2474 | net->type = ARPHRD_NONE; | |
2475 | net->mtu = DEFAULT_MTU - 14; | |
2476 | net->tx_queue_len = 10; | |
2477 | SET_ETHTOOL_OPS(net, &ops); | |
2478 | ||
2479 | /* and initialize the semaphore */ | |
2480 | spin_lock_init(&hso_net->net_lock); | |
2481 | } | |
2482 | ||
2483 | /* Adds a network device in the network device table */ | |
2484 | static int add_net_device(struct hso_device *hso_dev) | |
2485 | { | |
2486 | int i; | |
2487 | ||
2488 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2489 | if (network_table[i] == NULL) { | |
2490 | network_table[i] = hso_dev; | |
2491 | break; | |
2492 | } | |
2493 | } | |
2494 | if (i == HSO_MAX_NET_DEVICES) | |
2495 | return -1; | |
2496 | return 0; | |
2497 | } | |
2498 | ||
19d337df | 2499 | static int hso_rfkill_set_block(void *data, bool blocked) |
72dc1c09 GKH |
2500 | { |
2501 | struct hso_device *hso_dev = data; | |
19d337df | 2502 | int enabled = !blocked; |
72dc1c09 GKH |
2503 | int rv; |
2504 | ||
ab153d84 | 2505 | mutex_lock(&hso_dev->mutex); |
72dc1c09 GKH |
2506 | if (hso_dev->usb_gone) |
2507 | rv = 0; | |
2508 | else | |
2509 | rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0), | |
2510 | enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0, | |
2511 | USB_CTRL_SET_TIMEOUT); | |
ab153d84 | 2512 | mutex_unlock(&hso_dev->mutex); |
72dc1c09 GKH |
2513 | return rv; |
2514 | } | |
2515 | ||
19d337df JB |
2516 | static const struct rfkill_ops hso_rfkill_ops = { |
2517 | .set_block = hso_rfkill_set_block, | |
2518 | }; | |
2519 | ||
72dc1c09 GKH |
2520 | /* Creates and sets up everything for rfkill */ |
2521 | static void hso_create_rfkill(struct hso_device *hso_dev, | |
2522 | struct usb_interface *interface) | |
2523 | { | |
2524 | struct hso_net *hso_net = dev2net(hso_dev); | |
939a9516 | 2525 | struct device *dev = &hso_net->net->dev; |
72dc1c09 GKH |
2526 | char *rfkn; |
2527 | ||
72dc1c09 | 2528 | rfkn = kzalloc(20, GFP_KERNEL); |
19d337df | 2529 | if (!rfkn) |
939a9516 | 2530 | dev_err(dev, "%s - Out of memory\n", __func__); |
19d337df | 2531 | |
72dc1c09 GKH |
2532 | snprintf(rfkn, 20, "hso-%d", |
2533 | interface->altsetting->desc.bInterfaceNumber); | |
19d337df JB |
2534 | |
2535 | hso_net->rfkill = rfkill_alloc(rfkn, | |
2536 | &interface_to_usbdev(interface)->dev, | |
2537 | RFKILL_TYPE_WWAN, | |
2538 | &hso_rfkill_ops, hso_dev); | |
2539 | if (!hso_net->rfkill) { | |
2540 | dev_err(dev, "%s - Out of memory\n", __func__); | |
2541 | kfree(rfkn); | |
2542 | return; | |
2543 | } | |
72dc1c09 | 2544 | if (rfkill_register(hso_net->rfkill) < 0) { |
19d337df | 2545 | rfkill_destroy(hso_net->rfkill); |
72dc1c09 | 2546 | kfree(rfkn); |
939a9516 JM |
2547 | hso_net->rfkill = NULL; |
2548 | dev_err(dev, "%s - Failed to register rfkill\n", __func__); | |
72dc1c09 GKH |
2549 | return; |
2550 | } | |
2551 | } | |
2552 | ||
384912ed MH |
2553 | static struct device_type hso_type = { |
2554 | .name = "wwan", | |
2555 | }; | |
2556 | ||
72dc1c09 | 2557 | /* Creates our network device */ |
0de8ca59 JD |
2558 | static struct hso_device *hso_create_net_device(struct usb_interface *interface, |
2559 | int port_spec) | |
72dc1c09 GKH |
2560 | { |
2561 | int result, i; | |
2562 | struct net_device *net; | |
2563 | struct hso_net *hso_net; | |
2564 | struct hso_device *hso_dev; | |
2565 | ||
0de8ca59 | 2566 | hso_dev = hso_create_device(interface, port_spec); |
72dc1c09 GKH |
2567 | if (!hso_dev) |
2568 | return NULL; | |
2569 | ||
2570 | /* allocate our network device, then we can put in our private data */ | |
2571 | /* call hso_net_init to do the basic initialization */ | |
2572 | net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init); | |
2573 | if (!net) { | |
2574 | dev_err(&interface->dev, "Unable to create ethernet device\n"); | |
2575 | goto exit; | |
2576 | } | |
2577 | ||
2578 | hso_net = netdev_priv(net); | |
2579 | ||
2580 | hso_dev->port_data.dev_net = hso_net; | |
2581 | hso_net->net = net; | |
2582 | hso_net->parent = hso_dev; | |
2583 | ||
2584 | hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2585 | USB_DIR_IN); | |
2586 | if (!hso_net->in_endp) { | |
2587 | dev_err(&interface->dev, "Can't find BULK IN endpoint\n"); | |
2588 | goto exit; | |
2589 | } | |
2590 | hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2591 | USB_DIR_OUT); | |
2592 | if (!hso_net->out_endp) { | |
2593 | dev_err(&interface->dev, "Can't find BULK OUT endpoint\n"); | |
2594 | goto exit; | |
2595 | } | |
2596 | SET_NETDEV_DEV(net, &interface->dev); | |
384912ed | 2597 | SET_NETDEV_DEVTYPE(net, &hso_type); |
72dc1c09 GKH |
2598 | |
2599 | /* registering our net device */ | |
2600 | result = register_netdev(net); | |
2601 | if (result) { | |
2602 | dev_err(&interface->dev, "Failed to register device\n"); | |
2603 | goto exit; | |
2604 | } | |
2605 | ||
2606 | /* start allocating */ | |
2607 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2608 | hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL); | |
2609 | if (!hso_net->mux_bulk_rx_urb_pool[i]) { | |
2610 | dev_err(&interface->dev, "Could not allocate rx urb\n"); | |
2611 | goto exit; | |
2612 | } | |
2613 | hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE, | |
2614 | GFP_KERNEL); | |
2615 | if (!hso_net->mux_bulk_rx_buf_pool[i]) { | |
2616 | dev_err(&interface->dev, "Could not allocate rx buf\n"); | |
2617 | goto exit; | |
2618 | } | |
2619 | } | |
2620 | hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2621 | if (!hso_net->mux_bulk_tx_urb) { | |
2622 | dev_err(&interface->dev, "Could not allocate tx urb\n"); | |
2623 | goto exit; | |
2624 | } | |
2625 | hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL); | |
2626 | if (!hso_net->mux_bulk_tx_buf) { | |
2627 | dev_err(&interface->dev, "Could not allocate tx buf\n"); | |
2628 | goto exit; | |
2629 | } | |
2630 | ||
2631 | add_net_device(hso_dev); | |
2632 | ||
2633 | hso_log_port(hso_dev); | |
2634 | ||
2635 | hso_create_rfkill(hso_dev, interface); | |
2636 | ||
2637 | return hso_dev; | |
2638 | exit: | |
2639 | hso_free_net_device(hso_dev); | |
2640 | return NULL; | |
2641 | } | |
2642 | ||
542f5482 DJB |
2643 | static void hso_free_tiomget(struct hso_serial *serial) |
2644 | { | |
2645 | struct hso_tiocmget *tiocmget = serial->tiocmget; | |
2646 | if (tiocmget) { | |
542f5482 DJB |
2647 | if (tiocmget->urb) { |
2648 | usb_free_urb(tiocmget->urb); | |
2649 | tiocmget->urb = NULL; | |
2650 | } | |
2651 | serial->tiocmget = NULL; | |
3b7d2b31 | 2652 | kfree(tiocmget); |
542f5482 DJB |
2653 | |
2654 | } | |
2655 | } | |
2656 | ||
72dc1c09 GKH |
2657 | /* Frees an AT channel ( goes for both mux and non-mux ) */ |
2658 | static void hso_free_serial_device(struct hso_device *hso_dev) | |
2659 | { | |
2660 | struct hso_serial *serial = dev2ser(hso_dev); | |
2661 | ||
2662 | if (!serial) | |
2663 | return; | |
2664 | set_serial_by_index(serial->minor, NULL); | |
2665 | ||
2666 | hso_serial_common_free(serial); | |
2667 | ||
2668 | if (serial->shared_int) { | |
2669 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2670 | if (--serial->shared_int->ref_count == 0) | |
2671 | hso_free_shared_int(serial->shared_int); | |
2672 | else | |
2673 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2674 | } | |
542f5482 | 2675 | hso_free_tiomget(serial); |
72dc1c09 | 2676 | kfree(serial); |
e44578ea | 2677 | kfree(hso_dev); |
72dc1c09 GKH |
2678 | } |
2679 | ||
2680 | /* Creates a bulk AT channel */ | |
2681 | static struct hso_device *hso_create_bulk_serial_device( | |
2682 | struct usb_interface *interface, int port) | |
2683 | { | |
2684 | struct hso_device *hso_dev; | |
2685 | struct hso_serial *serial; | |
2686 | int num_urbs; | |
542f5482 | 2687 | struct hso_tiocmget *tiocmget; |
72dc1c09 GKH |
2688 | |
2689 | hso_dev = hso_create_device(interface, port); | |
2690 | if (!hso_dev) | |
2691 | return NULL; | |
2692 | ||
2693 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); | |
2694 | if (!serial) | |
2695 | goto exit; | |
2696 | ||
2697 | serial->parent = hso_dev; | |
2698 | hso_dev->port_data.dev_serial = serial; | |
2699 | ||
58eb17f1 | 2700 | if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) { |
72dc1c09 | 2701 | num_urbs = 2; |
542f5482 DJB |
2702 | serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget), |
2703 | GFP_KERNEL); | |
2704 | /* it isn't going to break our heart if serial->tiocmget | |
2705 | * allocation fails don't bother checking this. | |
2706 | */ | |
2707 | if (serial->tiocmget) { | |
2708 | tiocmget = serial->tiocmget; | |
2709 | tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL); | |
2710 | if (tiocmget->urb) { | |
2711 | mutex_init(&tiocmget->mutex); | |
2712 | init_waitqueue_head(&tiocmget->waitq); | |
2713 | tiocmget->endp = hso_get_ep( | |
2714 | interface, | |
2715 | USB_ENDPOINT_XFER_INT, | |
2716 | USB_DIR_IN); | |
2717 | } else | |
2718 | hso_free_tiomget(serial); | |
2719 | } | |
2720 | } | |
72dc1c09 GKH |
2721 | else |
2722 | num_urbs = 1; | |
2723 | ||
2724 | if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE, | |
2725 | BULK_URB_TX_SIZE)) | |
2726 | goto exit; | |
2727 | ||
2728 | serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2729 | USB_DIR_IN); | |
2730 | if (!serial->in_endp) { | |
2731 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); | |
e57b641d | 2732 | goto exit2; |
72dc1c09 GKH |
2733 | } |
2734 | ||
2735 | if (! | |
2736 | (serial->out_endp = | |
2737 | hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) { | |
2738 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); | |
e57b641d | 2739 | goto exit2; |
72dc1c09 GKH |
2740 | } |
2741 | ||
2742 | serial->write_data = hso_std_serial_write_data; | |
2743 | ||
2744 | /* and record this serial */ | |
2745 | set_serial_by_index(serial->minor, serial); | |
2746 | ||
2747 | /* setup the proc dirs and files if needed */ | |
2748 | hso_log_port(hso_dev); | |
2749 | ||
2750 | /* done, return it */ | |
2751 | return hso_dev; | |
e57b641d AB |
2752 | |
2753 | exit2: | |
2754 | hso_serial_common_free(serial); | |
72dc1c09 | 2755 | exit: |
542f5482 | 2756 | hso_free_tiomget(serial); |
72dc1c09 | 2757 | kfree(serial); |
e44578ea | 2758 | kfree(hso_dev); |
72dc1c09 GKH |
2759 | return NULL; |
2760 | } | |
2761 | ||
2762 | /* Creates a multiplexed AT channel */ | |
2763 | static | |
2764 | struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface, | |
2765 | int port, | |
2766 | struct hso_shared_int *mux) | |
2767 | { | |
2768 | struct hso_device *hso_dev; | |
2769 | struct hso_serial *serial; | |
2770 | int port_spec; | |
2771 | ||
2772 | port_spec = HSO_INTF_MUX; | |
2773 | port_spec &= ~HSO_PORT_MASK; | |
2774 | ||
2775 | port_spec |= hso_mux_to_port(port); | |
2776 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT) | |
2777 | return NULL; | |
2778 | ||
2779 | hso_dev = hso_create_device(interface, port_spec); | |
2780 | if (!hso_dev) | |
2781 | return NULL; | |
2782 | ||
2783 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); | |
2784 | if (!serial) | |
2785 | goto exit; | |
2786 | ||
2787 | hso_dev->port_data.dev_serial = serial; | |
2788 | serial->parent = hso_dev; | |
2789 | ||
2790 | if (hso_serial_common_create | |
2791 | (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE)) | |
2792 | goto exit; | |
2793 | ||
2794 | serial->tx_data_length--; | |
2795 | serial->write_data = hso_mux_serial_write_data; | |
2796 | ||
2797 | serial->shared_int = mux; | |
2798 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2799 | serial->shared_int->ref_count++; | |
2800 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2801 | ||
2802 | /* and record this serial */ | |
2803 | set_serial_by_index(serial->minor, serial); | |
2804 | ||
2805 | /* setup the proc dirs and files if needed */ | |
2806 | hso_log_port(hso_dev); | |
2807 | ||
2808 | /* done, return it */ | |
2809 | return hso_dev; | |
2810 | ||
2811 | exit: | |
2812 | if (serial) { | |
2813 | tty_unregister_device(tty_drv, serial->minor); | |
2814 | kfree(serial); | |
2815 | } | |
2816 | if (hso_dev) | |
e44578ea | 2817 | kfree(hso_dev); |
72dc1c09 GKH |
2818 | return NULL; |
2819 | ||
2820 | } | |
2821 | ||
2822 | static void hso_free_shared_int(struct hso_shared_int *mux) | |
2823 | { | |
2824 | usb_free_urb(mux->shared_intr_urb); | |
2825 | kfree(mux->shared_intr_buf); | |
2826 | mutex_unlock(&mux->shared_int_lock); | |
2827 | kfree(mux); | |
2828 | } | |
2829 | ||
2830 | static | |
2831 | struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface) | |
2832 | { | |
2833 | struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL); | |
2834 | ||
2835 | if (!mux) | |
2836 | return NULL; | |
2837 | ||
2838 | mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT, | |
2839 | USB_DIR_IN); | |
2840 | if (!mux->intr_endp) { | |
2841 | dev_err(&interface->dev, "Can't find INT IN endpoint\n"); | |
2842 | goto exit; | |
2843 | } | |
2844 | ||
2845 | mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2846 | if (!mux->shared_intr_urb) { | |
8a5c9c49 | 2847 | dev_err(&interface->dev, "Could not allocate intr urb?\n"); |
72dc1c09 GKH |
2848 | goto exit; |
2849 | } | |
d9ced80d JD |
2850 | mux->shared_intr_buf = |
2851 | kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize), | |
2852 | GFP_KERNEL); | |
72dc1c09 | 2853 | if (!mux->shared_intr_buf) { |
8a5c9c49 | 2854 | dev_err(&interface->dev, "Could not allocate intr buf?\n"); |
72dc1c09 GKH |
2855 | goto exit; |
2856 | } | |
2857 | ||
2858 | mutex_init(&mux->shared_int_lock); | |
2859 | ||
2860 | return mux; | |
2861 | ||
2862 | exit: | |
2863 | kfree(mux->shared_intr_buf); | |
2864 | usb_free_urb(mux->shared_intr_urb); | |
2865 | kfree(mux); | |
2866 | return NULL; | |
2867 | } | |
2868 | ||
2869 | /* Gets the port spec for a certain interface */ | |
2870 | static int hso_get_config_data(struct usb_interface *interface) | |
2871 | { | |
2872 | struct usb_device *usbdev = interface_to_usbdev(interface); | |
2873 | u8 config_data[17]; | |
2874 | u32 if_num = interface->altsetting->desc.bInterfaceNumber; | |
2875 | s32 result; | |
2876 | ||
2877 | if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), | |
2878 | 0x86, 0xC0, 0, 0, config_data, 17, | |
2879 | USB_CTRL_SET_TIMEOUT) != 0x11) { | |
2880 | return -EIO; | |
2881 | } | |
2882 | ||
2883 | switch (config_data[if_num]) { | |
2884 | case 0x0: | |
2885 | result = 0; | |
2886 | break; | |
2887 | case 0x1: | |
2888 | result = HSO_PORT_DIAG; | |
2889 | break; | |
2890 | case 0x2: | |
2891 | result = HSO_PORT_GPS; | |
2892 | break; | |
2893 | case 0x3: | |
2894 | result = HSO_PORT_GPS_CONTROL; | |
2895 | break; | |
2896 | case 0x4: | |
2897 | result = HSO_PORT_APP; | |
2898 | break; | |
2899 | case 0x5: | |
2900 | result = HSO_PORT_APP2; | |
2901 | break; | |
2902 | case 0x6: | |
2903 | result = HSO_PORT_CONTROL; | |
2904 | break; | |
2905 | case 0x7: | |
2906 | result = HSO_PORT_NETWORK; | |
2907 | break; | |
2908 | case 0x8: | |
2909 | result = HSO_PORT_MODEM; | |
2910 | break; | |
2911 | case 0x9: | |
2912 | result = HSO_PORT_MSD; | |
2913 | break; | |
2914 | case 0xa: | |
2915 | result = HSO_PORT_PCSC; | |
2916 | break; | |
2917 | case 0xb: | |
2918 | result = HSO_PORT_VOICE; | |
2919 | break; | |
2920 | default: | |
2921 | result = 0; | |
2922 | } | |
2923 | ||
2924 | if (result) | |
2925 | result |= HSO_INTF_BULK; | |
2926 | ||
2927 | if (config_data[16] & 0x1) | |
2928 | result |= HSO_INFO_CRC_BUG; | |
2929 | ||
2930 | return result; | |
2931 | } | |
2932 | ||
2933 | /* called once for each interface upon device insertion */ | |
2934 | static int hso_probe(struct usb_interface *interface, | |
2935 | const struct usb_device_id *id) | |
2936 | { | |
2937 | int mux, i, if_num, port_spec; | |
2938 | unsigned char port_mask; | |
2939 | struct hso_device *hso_dev = NULL; | |
2940 | struct hso_shared_int *shared_int; | |
2941 | struct hso_device *tmp_dev = NULL; | |
2942 | ||
2943 | if_num = interface->altsetting->desc.bInterfaceNumber; | |
2944 | ||
2945 | /* Get the interface/port specification from either driver_info or from | |
2946 | * the device itself */ | |
2947 | if (id->driver_info) | |
2948 | port_spec = ((u32 *)(id->driver_info))[if_num]; | |
2949 | else | |
2950 | port_spec = hso_get_config_data(interface); | |
2951 | ||
2952 | if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) { | |
2953 | dev_err(&interface->dev, "Not our interface\n"); | |
2954 | return -ENODEV; | |
2955 | } | |
2956 | /* Check if we need to switch to alt interfaces prior to port | |
2957 | * configuration */ | |
2958 | if (interface->num_altsetting > 1) | |
2959 | usb_set_interface(interface_to_usbdev(interface), if_num, 1); | |
2960 | interface->needs_remote_wakeup = 1; | |
2961 | ||
2962 | /* Allocate new hso device(s) */ | |
2963 | switch (port_spec & HSO_INTF_MASK) { | |
2964 | case HSO_INTF_MUX: | |
2965 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { | |
2966 | /* Create the network device */ | |
2967 | if (!disable_net) { | |
0de8ca59 JD |
2968 | hso_dev = hso_create_net_device(interface, |
2969 | port_spec); | |
72dc1c09 GKH |
2970 | if (!hso_dev) |
2971 | goto exit; | |
2972 | tmp_dev = hso_dev; | |
2973 | } | |
2974 | } | |
2975 | ||
2976 | if (hso_get_mux_ports(interface, &port_mask)) | |
2977 | /* TODO: de-allocate everything */ | |
2978 | goto exit; | |
2979 | ||
2980 | shared_int = hso_create_shared_int(interface); | |
2981 | if (!shared_int) | |
2982 | goto exit; | |
2983 | ||
2984 | for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) { | |
2985 | if (port_mask & i) { | |
2986 | hso_dev = hso_create_mux_serial_device( | |
2987 | interface, i, shared_int); | |
2988 | if (!hso_dev) | |
2989 | goto exit; | |
2990 | } | |
2991 | } | |
2992 | ||
2993 | if (tmp_dev) | |
2994 | hso_dev = tmp_dev; | |
2995 | break; | |
2996 | ||
2997 | case HSO_INTF_BULK: | |
2998 | /* It's a regular bulk interface */ | |
8e95a202 JP |
2999 | if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) && |
3000 | !disable_net) | |
0de8ca59 | 3001 | hso_dev = hso_create_net_device(interface, port_spec); |
72dc1c09 GKH |
3002 | else |
3003 | hso_dev = | |
3004 | hso_create_bulk_serial_device(interface, port_spec); | |
3005 | if (!hso_dev) | |
3006 | goto exit; | |
3007 | break; | |
3008 | default: | |
3009 | goto exit; | |
3010 | } | |
3011 | ||
72dc1c09 GKH |
3012 | /* save our data pointer in this device */ |
3013 | usb_set_intfdata(interface, hso_dev); | |
3014 | ||
3015 | /* done */ | |
3016 | return 0; | |
3017 | exit: | |
3018 | hso_free_interface(interface); | |
3019 | return -ENODEV; | |
3020 | } | |
3021 | ||
3022 | /* device removed, cleaning up */ | |
3023 | static void hso_disconnect(struct usb_interface *interface) | |
3024 | { | |
3025 | hso_free_interface(interface); | |
3026 | ||
3027 | /* remove reference of our private data */ | |
3028 | usb_set_intfdata(interface, NULL); | |
72dc1c09 GKH |
3029 | } |
3030 | ||
3031 | static void async_get_intf(struct work_struct *data) | |
3032 | { | |
3033 | struct hso_device *hso_dev = | |
3034 | container_of(data, struct hso_device, async_get_intf); | |
3035 | usb_autopm_get_interface(hso_dev->interface); | |
3036 | } | |
3037 | ||
3038 | static void async_put_intf(struct work_struct *data) | |
3039 | { | |
3040 | struct hso_device *hso_dev = | |
3041 | container_of(data, struct hso_device, async_put_intf); | |
3042 | usb_autopm_put_interface(hso_dev->interface); | |
3043 | } | |
3044 | ||
3045 | static int hso_get_activity(struct hso_device *hso_dev) | |
3046 | { | |
3047 | if (hso_dev->usb->state == USB_STATE_SUSPENDED) { | |
3048 | if (!hso_dev->is_active) { | |
3049 | hso_dev->is_active = 1; | |
3050 | schedule_work(&hso_dev->async_get_intf); | |
3051 | } | |
3052 | } | |
3053 | ||
3054 | if (hso_dev->usb->state != USB_STATE_CONFIGURED) | |
3055 | return -EAGAIN; | |
3056 | ||
3057 | usb_mark_last_busy(hso_dev->usb); | |
3058 | ||
3059 | return 0; | |
3060 | } | |
3061 | ||
3062 | static int hso_put_activity(struct hso_device *hso_dev) | |
3063 | { | |
3064 | if (hso_dev->usb->state != USB_STATE_SUSPENDED) { | |
3065 | if (hso_dev->is_active) { | |
3066 | hso_dev->is_active = 0; | |
3067 | schedule_work(&hso_dev->async_put_intf); | |
3068 | return -EAGAIN; | |
3069 | } | |
3070 | } | |
3071 | hso_dev->is_active = 0; | |
3072 | return 0; | |
3073 | } | |
3074 | ||
3075 | /* called by kernel when we need to suspend device */ | |
3076 | static int hso_suspend(struct usb_interface *iface, pm_message_t message) | |
3077 | { | |
3078 | int i, result; | |
3079 | ||
3080 | /* Stop all serial ports */ | |
3081 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
3082 | if (serial_table[i] && (serial_table[i]->interface == iface)) { | |
3083 | result = hso_stop_serial_device(serial_table[i]); | |
3084 | if (result) | |
3085 | goto out; | |
3086 | } | |
3087 | } | |
3088 | ||
3089 | /* Stop all network ports */ | |
3090 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
3091 | if (network_table[i] && | |
3092 | (network_table[i]->interface == iface)) { | |
3093 | result = hso_stop_net_device(network_table[i]); | |
3094 | if (result) | |
3095 | goto out; | |
3096 | } | |
3097 | } | |
3098 | ||
3099 | out: | |
3100 | return 0; | |
3101 | } | |
3102 | ||
3103 | /* called by kernel when we need to resume device */ | |
3104 | static int hso_resume(struct usb_interface *iface) | |
3105 | { | |
3106 | int i, result = 0; | |
3107 | struct hso_net *hso_net; | |
3108 | ||
3109 | /* Start all serial ports */ | |
3110 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
3111 | if (serial_table[i] && (serial_table[i]->interface == iface)) { | |
3112 | if (dev2ser(serial_table[i])->open_count) { | |
3113 | result = | |
3114 | hso_start_serial_device(serial_table[i], GFP_NOIO); | |
3115 | hso_kick_transmit(dev2ser(serial_table[i])); | |
3116 | if (result) | |
3117 | goto out; | |
3118 | } | |
3119 | } | |
3120 | } | |
3121 | ||
3122 | /* Start all network ports */ | |
3123 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
3124 | if (network_table[i] && | |
3125 | (network_table[i]->interface == iface)) { | |
3126 | hso_net = dev2net(network_table[i]); | |
89930b7b DJB |
3127 | if (hso_net->flags & IFF_UP) { |
3128 | /* First transmit any lingering data, | |
3129 | then restart the device. */ | |
3130 | if (hso_net->skb_tx_buf) { | |
3131 | dev_dbg(&iface->dev, | |
3132 | "Transmitting" | |
3133 | " lingering data\n"); | |
3134 | hso_net_start_xmit(hso_net->skb_tx_buf, | |
3135 | hso_net->net); | |
3136 | hso_net->skb_tx_buf = NULL; | |
3137 | } | |
3138 | result = hso_start_net_device(network_table[i]); | |
3139 | if (result) | |
3140 | goto out; | |
72dc1c09 | 3141 | } |
72dc1c09 GKH |
3142 | } |
3143 | } | |
3144 | ||
3145 | out: | |
3146 | return result; | |
3147 | } | |
3148 | ||
68a351c5 JD |
3149 | static void reset_device(struct work_struct *data) |
3150 | { | |
3151 | struct hso_device *hso_dev = | |
3152 | container_of(data, struct hso_device, reset_device); | |
3153 | struct usb_device *usb = hso_dev->usb; | |
3154 | int result; | |
3155 | ||
3156 | if (hso_dev->usb_gone) { | |
3157 | D1("No reset during disconnect\n"); | |
3158 | } else { | |
3159 | result = usb_lock_device_for_reset(usb, hso_dev->interface); | |
3160 | if (result < 0) | |
3161 | D1("unable to lock device for reset: %d\n", result); | |
3162 | else { | |
3163 | usb_reset_device(usb); | |
3164 | usb_unlock_device(usb); | |
3165 | } | |
3166 | } | |
3167 | } | |
3168 | ||
72dc1c09 GKH |
3169 | static void hso_serial_ref_free(struct kref *ref) |
3170 | { | |
3171 | struct hso_device *hso_dev = container_of(ref, struct hso_device, ref); | |
3172 | ||
3173 | hso_free_serial_device(hso_dev); | |
3174 | } | |
3175 | ||
3176 | static void hso_free_interface(struct usb_interface *interface) | |
3177 | { | |
3178 | struct hso_serial *hso_dev; | |
e136e303 | 3179 | struct tty_struct *tty; |
72dc1c09 GKH |
3180 | int i; |
3181 | ||
3182 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
8e95a202 JP |
3183 | if (serial_table[i] && |
3184 | (serial_table[i]->interface == interface)) { | |
72dc1c09 | 3185 | hso_dev = dev2ser(serial_table[i]); |
e136e303 AC |
3186 | spin_lock_irq(&hso_dev->serial_lock); |
3187 | tty = tty_kref_get(hso_dev->tty); | |
3188 | spin_unlock_irq(&hso_dev->serial_lock); | |
3189 | if (tty) | |
3190 | tty_hangup(tty); | |
ab153d84 | 3191 | mutex_lock(&hso_dev->parent->mutex); |
e136e303 | 3192 | tty_kref_put(tty); |
72dc1c09 | 3193 | hso_dev->parent->usb_gone = 1; |
ab153d84 DM |
3194 | mutex_unlock(&hso_dev->parent->mutex); |
3195 | kref_put(&serial_table[i]->ref, hso_serial_ref_free); | |
72dc1c09 GKH |
3196 | } |
3197 | } | |
3198 | ||
3199 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
8e95a202 JP |
3200 | if (network_table[i] && |
3201 | (network_table[i]->interface == interface)) { | |
72dc1c09 GKH |
3202 | struct rfkill *rfk = dev2net(network_table[i])->rfkill; |
3203 | /* hso_stop_net_device doesn't stop the net queue since | |
3204 | * traffic needs to start it again when suspended */ | |
3205 | netif_stop_queue(dev2net(network_table[i])->net); | |
3206 | hso_stop_net_device(network_table[i]); | |
3207 | cancel_work_sync(&network_table[i]->async_put_intf); | |
3208 | cancel_work_sync(&network_table[i]->async_get_intf); | |
19d337df | 3209 | if (rfk) { |
72dc1c09 | 3210 | rfkill_unregister(rfk); |
19d337df JB |
3211 | rfkill_destroy(rfk); |
3212 | } | |
72dc1c09 GKH |
3213 | hso_free_net_device(network_table[i]); |
3214 | } | |
3215 | } | |
3216 | } | |
3217 | ||
3218 | /* Helper functions */ | |
3219 | ||
3220 | /* Get the endpoint ! */ | |
3221 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, | |
3222 | int type, int dir) | |
3223 | { | |
3224 | int i; | |
3225 | struct usb_host_interface *iface = intf->cur_altsetting; | |
3226 | struct usb_endpoint_descriptor *endp; | |
3227 | ||
3228 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { | |
3229 | endp = &iface->endpoint[i].desc; | |
3230 | if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) && | |
f201a8a4 | 3231 | (usb_endpoint_type(endp) == type)) |
72dc1c09 GKH |
3232 | return endp; |
3233 | } | |
3234 | ||
3235 | return NULL; | |
3236 | } | |
3237 | ||
3238 | /* Get the byte that describes which ports are enabled */ | |
3239 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports) | |
3240 | { | |
3241 | int i; | |
3242 | struct usb_host_interface *iface = intf->cur_altsetting; | |
3243 | ||
3244 | if (iface->extralen == 3) { | |
3245 | *ports = iface->extra[2]; | |
3246 | return 0; | |
3247 | } | |
3248 | ||
3249 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { | |
3250 | if (iface->endpoint[i].extralen == 3) { | |
3251 | *ports = iface->endpoint[i].extra[2]; | |
3252 | return 0; | |
3253 | } | |
3254 | } | |
3255 | ||
3256 | return -1; | |
3257 | } | |
3258 | ||
3259 | /* interrupt urb needs to be submitted, used for serial read of muxed port */ | |
3260 | static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int, | |
3261 | struct usb_device *usb, gfp_t gfp) | |
3262 | { | |
3263 | int result; | |
3264 | ||
3265 | usb_fill_int_urb(shared_int->shared_intr_urb, usb, | |
3266 | usb_rcvintpipe(usb, | |
3267 | shared_int->intr_endp->bEndpointAddress & 0x7F), | |
3268 | shared_int->shared_intr_buf, | |
d9ced80d | 3269 | 1, |
72dc1c09 GKH |
3270 | intr_callback, shared_int, |
3271 | shared_int->intr_endp->bInterval); | |
3272 | ||
3273 | result = usb_submit_urb(shared_int->shared_intr_urb, gfp); | |
3274 | if (result) | |
8a5c9c49 | 3275 | dev_warn(&usb->dev, "%s failed mux_intr_urb %d\n", __func__, |
72dc1c09 GKH |
3276 | result); |
3277 | ||
3278 | return result; | |
3279 | } | |
3280 | ||
3281 | /* operations setup of the serial interface */ | |
6c59f569 | 3282 | static const struct tty_operations hso_serial_ops = { |
72dc1c09 GKH |
3283 | .open = hso_serial_open, |
3284 | .close = hso_serial_close, | |
3285 | .write = hso_serial_write, | |
3286 | .write_room = hso_serial_write_room, | |
542f5482 | 3287 | .ioctl = hso_serial_ioctl, |
72dc1c09 GKH |
3288 | .set_termios = hso_serial_set_termios, |
3289 | .chars_in_buffer = hso_serial_chars_in_buffer, | |
3290 | .tiocmget = hso_serial_tiocmget, | |
3291 | .tiocmset = hso_serial_tiocmset, | |
8ef5ba63 | 3292 | .unthrottle = hso_unthrottle |
72dc1c09 GKH |
3293 | }; |
3294 | ||
3295 | static struct usb_driver hso_driver = { | |
3296 | .name = driver_name, | |
3297 | .probe = hso_probe, | |
3298 | .disconnect = hso_disconnect, | |
3299 | .id_table = hso_ids, | |
3300 | .suspend = hso_suspend, | |
3301 | .resume = hso_resume, | |
9c8f92ae | 3302 | .reset_resume = hso_resume, |
72dc1c09 GKH |
3303 | .supports_autosuspend = 1, |
3304 | }; | |
3305 | ||
3306 | static int __init hso_init(void) | |
3307 | { | |
3308 | int i; | |
3309 | int result; | |
3310 | ||
3311 | /* put it in the log */ | |
3312 | printk(KERN_INFO "hso: %s\n", version); | |
3313 | ||
3314 | /* Initialise the serial table semaphore and table */ | |
3315 | spin_lock_init(&serial_table_lock); | |
3316 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) | |
3317 | serial_table[i] = NULL; | |
3318 | ||
3319 | /* allocate our driver using the proper amount of supported minors */ | |
3320 | tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS); | |
3321 | if (!tty_drv) | |
3322 | return -ENOMEM; | |
3323 | ||
3324 | /* fill in all needed values */ | |
3325 | tty_drv->magic = TTY_DRIVER_MAGIC; | |
3326 | tty_drv->owner = THIS_MODULE; | |
3327 | tty_drv->driver_name = driver_name; | |
3328 | tty_drv->name = tty_filename; | |
3329 | ||
3330 | /* if major number is provided as parameter, use that one */ | |
3331 | if (tty_major) | |
3332 | tty_drv->major = tty_major; | |
3333 | ||
3334 | tty_drv->minor_start = 0; | |
3335 | tty_drv->num = HSO_SERIAL_TTY_MINORS; | |
3336 | tty_drv->type = TTY_DRIVER_TYPE_SERIAL; | |
3337 | tty_drv->subtype = SERIAL_TYPE_NORMAL; | |
3338 | tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; | |
3339 | tty_drv->init_termios = tty_std_termios; | |
ac9720c3 | 3340 | hso_init_termios(&tty_drv->init_termios); |
72dc1c09 GKH |
3341 | tty_set_operations(tty_drv, &hso_serial_ops); |
3342 | ||
3343 | /* register the tty driver */ | |
3344 | result = tty_register_driver(tty_drv); | |
3345 | if (result) { | |
3346 | printk(KERN_ERR "%s - tty_register_driver failed(%d)\n", | |
3347 | __func__, result); | |
3348 | return result; | |
3349 | } | |
3350 | ||
3351 | /* register this module as an usb driver */ | |
3352 | result = usb_register(&hso_driver); | |
3353 | if (result) { | |
3354 | printk(KERN_ERR "Could not register hso driver? error: %d\n", | |
3355 | result); | |
3356 | /* cleanup serial interface */ | |
3357 | tty_unregister_driver(tty_drv); | |
3358 | return result; | |
3359 | } | |
3360 | ||
3361 | /* done */ | |
3362 | return 0; | |
3363 | } | |
3364 | ||
3365 | static void __exit hso_exit(void) | |
3366 | { | |
3367 | printk(KERN_INFO "hso: unloaded\n"); | |
3368 | ||
3369 | tty_unregister_driver(tty_drv); | |
3370 | /* deregister the usb driver */ | |
3371 | usb_deregister(&hso_driver); | |
3372 | } | |
3373 | ||
3374 | /* Module definitions */ | |
3375 | module_init(hso_init); | |
3376 | module_exit(hso_exit); | |
3377 | ||
3378 | MODULE_AUTHOR(MOD_AUTHOR); | |
3379 | MODULE_DESCRIPTION(MOD_DESCRIPTION); | |
3380 | MODULE_LICENSE(MOD_LICENSE); | |
72dc1c09 GKH |
3381 | |
3382 | /* change the debug level (eg: insmod hso.ko debug=0x04) */ | |
3383 | MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]"); | |
3384 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
3385 | ||
3386 | /* set the major tty number (eg: insmod hso.ko tty_major=245) */ | |
3387 | MODULE_PARM_DESC(tty_major, "Set the major tty number"); | |
3388 | module_param(tty_major, int, S_IRUGO | S_IWUSR); | |
3389 | ||
3390 | /* disable network interface (eg: insmod hso.ko disable_net=1) */ | |
3391 | MODULE_PARM_DESC(disable_net, "Disable the network interface"); | |
3392 | module_param(disable_net, int, S_IRUGO | S_IWUSR); |