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Commit | Line | Data |
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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 | ||
72dc1c09 GKH |
109 | /*****************************************************************************/ |
110 | /* Debugging functions */ | |
111 | /*****************************************************************************/ | |
112 | #define D__(lvl_, fmt, arg...) \ | |
113 | do { \ | |
114 | printk(lvl_ "[%d:%s]: " fmt "\n", \ | |
115 | __LINE__, __func__, ## arg); \ | |
116 | } while (0) | |
117 | ||
118 | #define D_(lvl, args...) \ | |
119 | do { \ | |
120 | if (lvl & debug) \ | |
121 | D__(KERN_INFO, args); \ | |
122 | } while (0) | |
123 | ||
124 | #define D1(args...) D_(0x01, ##args) | |
125 | #define D2(args...) D_(0x02, ##args) | |
126 | #define D3(args...) D_(0x04, ##args) | |
127 | #define D4(args...) D_(0x08, ##args) | |
128 | #define D5(args...) D_(0x10, ##args) | |
129 | ||
130 | /*****************************************************************************/ | |
131 | /* Enumerators */ | |
132 | /*****************************************************************************/ | |
133 | enum pkt_parse_state { | |
134 | WAIT_IP, | |
135 | WAIT_DATA, | |
136 | WAIT_SYNC | |
137 | }; | |
138 | ||
139 | /*****************************************************************************/ | |
140 | /* Structs */ | |
141 | /*****************************************************************************/ | |
142 | ||
143 | struct hso_shared_int { | |
144 | struct usb_endpoint_descriptor *intr_endp; | |
145 | void *shared_intr_buf; | |
146 | struct urb *shared_intr_urb; | |
147 | struct usb_device *usb; | |
148 | int use_count; | |
149 | int ref_count; | |
150 | struct mutex shared_int_lock; | |
151 | }; | |
152 | ||
153 | struct hso_net { | |
154 | struct hso_device *parent; | |
155 | struct net_device *net; | |
156 | struct rfkill *rfkill; | |
157 | ||
158 | struct usb_endpoint_descriptor *in_endp; | |
159 | struct usb_endpoint_descriptor *out_endp; | |
160 | ||
161 | struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT]; | |
162 | struct urb *mux_bulk_tx_urb; | |
163 | void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT]; | |
164 | void *mux_bulk_tx_buf; | |
165 | ||
166 | struct sk_buff *skb_rx_buf; | |
167 | struct sk_buff *skb_tx_buf; | |
168 | ||
169 | enum pkt_parse_state rx_parse_state; | |
170 | spinlock_t net_lock; | |
171 | ||
172 | unsigned short rx_buf_size; | |
173 | unsigned short rx_buf_missing; | |
174 | struct iphdr rx_ip_hdr; | |
175 | ||
176 | unsigned long flags; | |
177 | }; | |
178 | ||
8ef5ba63 DJB |
179 | enum rx_ctrl_state{ |
180 | RX_IDLE, | |
181 | RX_SENT, | |
182 | RX_PENDING | |
183 | }; | |
184 | ||
542f5482 DJB |
185 | #define BM_REQUEST_TYPE (0xa1) |
186 | #define B_NOTIFICATION (0x20) | |
187 | #define W_VALUE (0x0) | |
188 | #define W_INDEX (0x2) | |
189 | #define W_LENGTH (0x2) | |
190 | ||
191 | #define B_OVERRUN (0x1<<6) | |
192 | #define B_PARITY (0x1<<5) | |
193 | #define B_FRAMING (0x1<<4) | |
194 | #define B_RING_SIGNAL (0x1<<3) | |
195 | #define B_BREAK (0x1<<2) | |
196 | #define B_TX_CARRIER (0x1<<1) | |
197 | #define B_RX_CARRIER (0x1<<0) | |
198 | ||
199 | struct hso_serial_state_notification { | |
200 | u8 bmRequestType; | |
201 | u8 bNotification; | |
202 | u16 wValue; | |
203 | u16 wIndex; | |
204 | u16 wLength; | |
205 | u16 UART_state_bitmap; | |
ba2d3587 | 206 | } __packed; |
542f5482 DJB |
207 | |
208 | struct hso_tiocmget { | |
209 | struct mutex mutex; | |
210 | wait_queue_head_t waitq; | |
211 | int intr_completed; | |
212 | struct usb_endpoint_descriptor *endp; | |
213 | struct urb *urb; | |
214 | struct hso_serial_state_notification serial_state_notification; | |
215 | u16 prev_UART_state_bitmap; | |
216 | struct uart_icount icount; | |
217 | }; | |
218 | ||
219 | ||
72dc1c09 GKH |
220 | struct hso_serial { |
221 | struct hso_device *parent; | |
222 | int magic; | |
223 | u8 minor; | |
224 | ||
225 | struct hso_shared_int *shared_int; | |
226 | ||
227 | /* rx/tx urb could be either a bulk urb or a control urb depending | |
228 | on which serial port it is used on. */ | |
229 | struct urb *rx_urb[MAX_RX_URBS]; | |
230 | u8 num_rx_urbs; | |
231 | u8 *rx_data[MAX_RX_URBS]; | |
232 | u16 rx_data_length; /* should contain allocated length */ | |
233 | ||
234 | struct urb *tx_urb; | |
235 | u8 *tx_data; | |
236 | u8 *tx_buffer; | |
237 | u16 tx_data_length; /* should contain allocated length */ | |
238 | u16 tx_data_count; | |
239 | u16 tx_buffer_count; | |
240 | struct usb_ctrlrequest ctrl_req_tx; | |
241 | struct usb_ctrlrequest ctrl_req_rx; | |
242 | ||
243 | struct usb_endpoint_descriptor *in_endp; | |
244 | struct usb_endpoint_descriptor *out_endp; | |
245 | ||
8ef5ba63 | 246 | enum rx_ctrl_state rx_state; |
72dc1c09 GKH |
247 | u8 rts_state; |
248 | u8 dtr_state; | |
249 | unsigned tx_urb_used:1; | |
250 | ||
5ce76e77 | 251 | struct tty_port port; |
72dc1c09 | 252 | /* from usb_serial_port */ |
72dc1c09 GKH |
253 | spinlock_t serial_lock; |
254 | ||
255 | int (*write_data) (struct hso_serial *serial); | |
542f5482 | 256 | struct hso_tiocmget *tiocmget; |
8ef5ba63 DJB |
257 | /* Hacks required to get flow control |
258 | * working on the serial receive buffers | |
259 | * so as not to drop characters on the floor. | |
260 | */ | |
261 | int curr_rx_urb_idx; | |
262 | u16 curr_rx_urb_offset; | |
263 | u8 rx_urb_filled[MAX_RX_URBS]; | |
264 | struct tasklet_struct unthrottle_tasklet; | |
265 | struct work_struct retry_unthrottle_workqueue; | |
72dc1c09 GKH |
266 | }; |
267 | ||
268 | struct hso_device { | |
269 | union { | |
270 | struct hso_serial *dev_serial; | |
271 | struct hso_net *dev_net; | |
272 | } port_data; | |
273 | ||
274 | u32 port_spec; | |
275 | ||
276 | u8 is_active; | |
277 | u8 usb_gone; | |
278 | struct work_struct async_get_intf; | |
279 | struct work_struct async_put_intf; | |
68a351c5 | 280 | struct work_struct reset_device; |
72dc1c09 GKH |
281 | |
282 | struct usb_device *usb; | |
283 | struct usb_interface *interface; | |
284 | ||
285 | struct device *dev; | |
286 | struct kref ref; | |
ab153d84 | 287 | struct mutex mutex; |
72dc1c09 GKH |
288 | }; |
289 | ||
290 | /* Type of interface */ | |
291 | #define HSO_INTF_MASK 0xFF00 | |
292 | #define HSO_INTF_MUX 0x0100 | |
293 | #define HSO_INTF_BULK 0x0200 | |
294 | ||
295 | /* Type of port */ | |
296 | #define HSO_PORT_MASK 0xFF | |
297 | #define HSO_PORT_NO_PORT 0x0 | |
298 | #define HSO_PORT_CONTROL 0x1 | |
299 | #define HSO_PORT_APP 0x2 | |
300 | #define HSO_PORT_GPS 0x3 | |
301 | #define HSO_PORT_PCSC 0x4 | |
302 | #define HSO_PORT_APP2 0x5 | |
303 | #define HSO_PORT_GPS_CONTROL 0x6 | |
304 | #define HSO_PORT_MSD 0x7 | |
305 | #define HSO_PORT_VOICE 0x8 | |
306 | #define HSO_PORT_DIAG2 0x9 | |
307 | #define HSO_PORT_DIAG 0x10 | |
308 | #define HSO_PORT_MODEM 0x11 | |
309 | #define HSO_PORT_NETWORK 0x12 | |
310 | ||
311 | /* Additional device info */ | |
312 | #define HSO_INFO_MASK 0xFF000000 | |
313 | #define HSO_INFO_CRC_BUG 0x01000000 | |
314 | ||
315 | /*****************************************************************************/ | |
316 | /* Prototypes */ | |
317 | /*****************************************************************************/ | |
318 | /* Serial driver functions */ | |
20b9d177 | 319 | static int hso_serial_tiocmset(struct tty_struct *tty, |
72dc1c09 GKH |
320 | unsigned int set, unsigned int clear); |
321 | static void ctrl_callback(struct urb *urb); | |
8ef5ba63 | 322 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial); |
72dc1c09 GKH |
323 | static void hso_kick_transmit(struct hso_serial *serial); |
324 | /* Helper functions */ | |
325 | static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int, | |
326 | struct usb_device *usb, gfp_t gfp); | |
68a351c5 JD |
327 | static void handle_usb_error(int status, const char *function, |
328 | struct hso_device *hso_dev); | |
72dc1c09 GKH |
329 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, |
330 | int type, int dir); | |
331 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports); | |
332 | static void hso_free_interface(struct usb_interface *intf); | |
333 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags); | |
334 | static int hso_stop_serial_device(struct hso_device *hso_dev); | |
335 | static int hso_start_net_device(struct hso_device *hso_dev); | |
336 | static void hso_free_shared_int(struct hso_shared_int *shared_int); | |
337 | static int hso_stop_net_device(struct hso_device *hso_dev); | |
338 | static void hso_serial_ref_free(struct kref *ref); | |
8ef5ba63 DJB |
339 | static void hso_std_serial_read_bulk_callback(struct urb *urb); |
340 | static int hso_mux_serial_read(struct hso_serial *serial); | |
72dc1c09 GKH |
341 | static void async_get_intf(struct work_struct *data); |
342 | static void async_put_intf(struct work_struct *data); | |
343 | static int hso_put_activity(struct hso_device *hso_dev); | |
344 | static int hso_get_activity(struct hso_device *hso_dev); | |
542f5482 | 345 | static void tiocmget_intr_callback(struct urb *urb); |
68a351c5 | 346 | static void reset_device(struct work_struct *data); |
72dc1c09 GKH |
347 | /*****************************************************************************/ |
348 | /* Helping functions */ | |
349 | /*****************************************************************************/ | |
350 | ||
351 | /* #define DEBUG */ | |
352 | ||
0235f641 GKH |
353 | static inline struct hso_net *dev2net(struct hso_device *hso_dev) |
354 | { | |
355 | return hso_dev->port_data.dev_net; | |
356 | } | |
357 | ||
358 | static inline struct hso_serial *dev2ser(struct hso_device *hso_dev) | |
359 | { | |
360 | return hso_dev->port_data.dev_serial; | |
361 | } | |
72dc1c09 GKH |
362 | |
363 | /* Debugging functions */ | |
364 | #ifdef DEBUG | |
365 | static void dbg_dump(int line_count, const char *func_name, unsigned char *buf, | |
366 | unsigned int len) | |
367 | { | |
0235f641 | 368 | static char name[255]; |
72dc1c09 | 369 | |
0235f641 GKH |
370 | sprintf(name, "hso[%d:%s]", line_count, func_name); |
371 | print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len); | |
72dc1c09 GKH |
372 | } |
373 | ||
374 | #define DUMP(buf_, len_) \ | |
9ce673d5 | 375 | dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_) |
72dc1c09 GKH |
376 | |
377 | #define DUMP1(buf_, len_) \ | |
378 | do { \ | |
379 | if (0x01 & debug) \ | |
380 | DUMP(buf_, len_); \ | |
381 | } while (0) | |
382 | #else | |
383 | #define DUMP(buf_, len_) | |
384 | #define DUMP1(buf_, len_) | |
385 | #endif | |
386 | ||
387 | /* module parameters */ | |
388 | static int debug; | |
389 | static int tty_major; | |
390 | static int disable_net; | |
391 | ||
392 | /* driver info */ | |
393 | static const char driver_name[] = "hso"; | |
394 | static const char tty_filename[] = "ttyHS"; | |
242647bc | 395 | static const char *version = __FILE__ ": " MOD_AUTHOR; |
72dc1c09 GKH |
396 | /* the usb driver itself (registered in hso_init) */ |
397 | static struct usb_driver hso_driver; | |
398 | /* serial structures */ | |
399 | static struct tty_driver *tty_drv; | |
400 | static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS]; | |
401 | static struct hso_device *network_table[HSO_MAX_NET_DEVICES]; | |
402 | static spinlock_t serial_table_lock; | |
72dc1c09 GKH |
403 | |
404 | static const s32 default_port_spec[] = { | |
405 | HSO_INTF_MUX | HSO_PORT_NETWORK, | |
406 | HSO_INTF_BULK | HSO_PORT_DIAG, | |
407 | HSO_INTF_BULK | HSO_PORT_MODEM, | |
408 | 0 | |
409 | }; | |
410 | ||
411 | static const s32 icon321_port_spec[] = { | |
412 | HSO_INTF_MUX | HSO_PORT_NETWORK, | |
413 | HSO_INTF_BULK | HSO_PORT_DIAG2, | |
414 | HSO_INTF_BULK | HSO_PORT_MODEM, | |
415 | HSO_INTF_BULK | HSO_PORT_DIAG, | |
416 | 0 | |
417 | }; | |
418 | ||
419 | #define default_port_device(vendor, product) \ | |
420 | USB_DEVICE(vendor, product), \ | |
421 | .driver_info = (kernel_ulong_t)default_port_spec | |
422 | ||
423 | #define icon321_port_device(vendor, product) \ | |
424 | USB_DEVICE(vendor, product), \ | |
425 | .driver_info = (kernel_ulong_t)icon321_port_spec | |
426 | ||
427 | /* list of devices we support */ | |
428 | static const struct usb_device_id hso_ids[] = { | |
429 | {default_port_device(0x0af0, 0x6711)}, | |
430 | {default_port_device(0x0af0, 0x6731)}, | |
431 | {default_port_device(0x0af0, 0x6751)}, | |
432 | {default_port_device(0x0af0, 0x6771)}, | |
433 | {default_port_device(0x0af0, 0x6791)}, | |
434 | {default_port_device(0x0af0, 0x6811)}, | |
435 | {default_port_device(0x0af0, 0x6911)}, | |
436 | {default_port_device(0x0af0, 0x6951)}, | |
437 | {default_port_device(0x0af0, 0x6971)}, | |
438 | {default_port_device(0x0af0, 0x7011)}, | |
439 | {default_port_device(0x0af0, 0x7031)}, | |
440 | {default_port_device(0x0af0, 0x7051)}, | |
441 | {default_port_device(0x0af0, 0x7071)}, | |
442 | {default_port_device(0x0af0, 0x7111)}, | |
443 | {default_port_device(0x0af0, 0x7211)}, | |
444 | {default_port_device(0x0af0, 0x7251)}, | |
445 | {default_port_device(0x0af0, 0x7271)}, | |
446 | {default_port_device(0x0af0, 0x7311)}, | |
447 | {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */ | |
448 | {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */ | |
449 | {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */ | |
95eacee8 | 450 | {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */ |
72dc1c09 GKH |
451 | {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */ |
452 | {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */ | |
67dd8246 | 453 | {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */ |
72dc1c09 GKH |
454 | {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */ |
455 | {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */ | |
456 | {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */ | |
bab04c3a | 457 | {USB_DEVICE(0x0af0, 0x7701)}, |
ec157937 | 458 | {USB_DEVICE(0x0af0, 0x7706)}, |
bab04c3a DJB |
459 | {USB_DEVICE(0x0af0, 0x7801)}, |
460 | {USB_DEVICE(0x0af0, 0x7901)}, | |
ec157937 JD |
461 | {USB_DEVICE(0x0af0, 0x7A01)}, |
462 | {USB_DEVICE(0x0af0, 0x7A05)}, | |
9961d842 JD |
463 | {USB_DEVICE(0x0af0, 0x8200)}, |
464 | {USB_DEVICE(0x0af0, 0x8201)}, | |
ec157937 JD |
465 | {USB_DEVICE(0x0af0, 0x8300)}, |
466 | {USB_DEVICE(0x0af0, 0x8302)}, | |
467 | {USB_DEVICE(0x0af0, 0x8304)}, | |
468 | {USB_DEVICE(0x0af0, 0x8400)}, | |
dd7496f2 FA |
469 | {USB_DEVICE(0x0af0, 0x8600)}, |
470 | {USB_DEVICE(0x0af0, 0x8800)}, | |
471 | {USB_DEVICE(0x0af0, 0x8900)}, | |
5c7bf2f4 | 472 | {USB_DEVICE(0x0af0, 0x9000)}, |
9961d842 | 473 | {USB_DEVICE(0x0af0, 0xd035)}, |
67dd8246 | 474 | {USB_DEVICE(0x0af0, 0xd055)}, |
9961d842 JD |
475 | {USB_DEVICE(0x0af0, 0xd155)}, |
476 | {USB_DEVICE(0x0af0, 0xd255)}, | |
477 | {USB_DEVICE(0x0af0, 0xd057)}, | |
478 | {USB_DEVICE(0x0af0, 0xd157)}, | |
479 | {USB_DEVICE(0x0af0, 0xd257)}, | |
480 | {USB_DEVICE(0x0af0, 0xd357)}, | |
ec157937 JD |
481 | {USB_DEVICE(0x0af0, 0xd058)}, |
482 | {USB_DEVICE(0x0af0, 0xc100)}, | |
72dc1c09 GKH |
483 | {} |
484 | }; | |
485 | MODULE_DEVICE_TABLE(usb, hso_ids); | |
486 | ||
487 | /* Sysfs attribute */ | |
488 | static ssize_t hso_sysfs_show_porttype(struct device *dev, | |
489 | struct device_attribute *attr, | |
490 | char *buf) | |
491 | { | |
1aec5bdf | 492 | struct hso_device *hso_dev = dev_get_drvdata(dev); |
72dc1c09 GKH |
493 | char *port_name; |
494 | ||
495 | if (!hso_dev) | |
496 | return 0; | |
497 | ||
498 | switch (hso_dev->port_spec & HSO_PORT_MASK) { | |
499 | case HSO_PORT_CONTROL: | |
500 | port_name = "Control"; | |
501 | break; | |
502 | case HSO_PORT_APP: | |
503 | port_name = "Application"; | |
504 | break; | |
505 | case HSO_PORT_APP2: | |
506 | port_name = "Application2"; | |
507 | break; | |
508 | case HSO_PORT_GPS: | |
509 | port_name = "GPS"; | |
510 | break; | |
511 | case HSO_PORT_GPS_CONTROL: | |
512 | port_name = "GPS Control"; | |
513 | break; | |
514 | case HSO_PORT_PCSC: | |
515 | port_name = "PCSC"; | |
516 | break; | |
517 | case HSO_PORT_DIAG: | |
518 | port_name = "Diagnostic"; | |
519 | break; | |
520 | case HSO_PORT_DIAG2: | |
521 | port_name = "Diagnostic2"; | |
522 | break; | |
523 | case HSO_PORT_MODEM: | |
524 | port_name = "Modem"; | |
525 | break; | |
526 | case HSO_PORT_NETWORK: | |
527 | port_name = "Network"; | |
528 | break; | |
529 | default: | |
530 | port_name = "Unknown"; | |
531 | break; | |
532 | } | |
533 | ||
534 | return sprintf(buf, "%s\n", port_name); | |
535 | } | |
536 | static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL); | |
537 | ||
8ef5ba63 DJB |
538 | static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb) |
539 | { | |
540 | int idx; | |
541 | ||
542 | for (idx = 0; idx < serial->num_rx_urbs; idx++) | |
543 | if (serial->rx_urb[idx] == urb) | |
544 | return idx; | |
545 | dev_err(serial->parent->dev, "hso_urb_to_index failed\n"); | |
546 | return -1; | |
547 | } | |
548 | ||
72dc1c09 GKH |
549 | /* converts mux value to a port spec value */ |
550 | static u32 hso_mux_to_port(int mux) | |
551 | { | |
552 | u32 result; | |
553 | ||
554 | switch (mux) { | |
555 | case 0x1: | |
556 | result = HSO_PORT_CONTROL; | |
557 | break; | |
558 | case 0x2: | |
559 | result = HSO_PORT_APP; | |
560 | break; | |
561 | case 0x4: | |
562 | result = HSO_PORT_PCSC; | |
563 | break; | |
564 | case 0x8: | |
565 | result = HSO_PORT_GPS; | |
566 | break; | |
567 | case 0x10: | |
568 | result = HSO_PORT_APP2; | |
569 | break; | |
570 | default: | |
571 | result = HSO_PORT_NO_PORT; | |
572 | } | |
573 | return result; | |
574 | } | |
575 | ||
576 | /* converts port spec value to a mux value */ | |
577 | static u32 hso_port_to_mux(int port) | |
578 | { | |
579 | u32 result; | |
580 | ||
581 | switch (port & HSO_PORT_MASK) { | |
582 | case HSO_PORT_CONTROL: | |
583 | result = 0x0; | |
584 | break; | |
585 | case HSO_PORT_APP: | |
586 | result = 0x1; | |
587 | break; | |
588 | case HSO_PORT_PCSC: | |
589 | result = 0x2; | |
590 | break; | |
591 | case HSO_PORT_GPS: | |
592 | result = 0x3; | |
593 | break; | |
594 | case HSO_PORT_APP2: | |
595 | result = 0x4; | |
596 | break; | |
597 | default: | |
598 | result = 0x0; | |
599 | } | |
600 | return result; | |
601 | } | |
602 | ||
603 | static struct hso_serial *get_serial_by_shared_int_and_type( | |
604 | struct hso_shared_int *shared_int, | |
605 | int mux) | |
606 | { | |
607 | int i, port; | |
608 | ||
609 | port = hso_mux_to_port(mux); | |
610 | ||
611 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
8e95a202 JP |
612 | if (serial_table[i] && |
613 | (dev2ser(serial_table[i])->shared_int == shared_int) && | |
614 | ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) { | |
72dc1c09 GKH |
615 | return dev2ser(serial_table[i]); |
616 | } | |
617 | } | |
618 | ||
619 | return NULL; | |
620 | } | |
621 | ||
622 | static struct hso_serial *get_serial_by_index(unsigned index) | |
623 | { | |
0235f641 | 624 | struct hso_serial *serial = NULL; |
72dc1c09 GKH |
625 | unsigned long flags; |
626 | ||
72dc1c09 | 627 | spin_lock_irqsave(&serial_table_lock, flags); |
0235f641 GKH |
628 | if (serial_table[index]) |
629 | serial = dev2ser(serial_table[index]); | |
72dc1c09 GKH |
630 | spin_unlock_irqrestore(&serial_table_lock, flags); |
631 | ||
632 | return serial; | |
633 | } | |
634 | ||
635 | static int get_free_serial_index(void) | |
636 | { | |
637 | int index; | |
638 | unsigned long flags; | |
639 | ||
640 | spin_lock_irqsave(&serial_table_lock, flags); | |
641 | for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) { | |
642 | if (serial_table[index] == NULL) { | |
643 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
644 | return index; | |
645 | } | |
646 | } | |
647 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
648 | ||
649 | printk(KERN_ERR "%s: no free serial devices in table\n", __func__); | |
650 | return -1; | |
651 | } | |
652 | ||
653 | static void set_serial_by_index(unsigned index, struct hso_serial *serial) | |
654 | { | |
655 | unsigned long flags; | |
0235f641 | 656 | |
72dc1c09 GKH |
657 | spin_lock_irqsave(&serial_table_lock, flags); |
658 | if (serial) | |
659 | serial_table[index] = serial->parent; | |
660 | else | |
661 | serial_table[index] = NULL; | |
662 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
663 | } | |
664 | ||
68a351c5 JD |
665 | static void handle_usb_error(int status, const char *function, |
666 | struct hso_device *hso_dev) | |
72dc1c09 GKH |
667 | { |
668 | char *explanation; | |
669 | ||
670 | switch (status) { | |
671 | case -ENODEV: | |
672 | explanation = "no device"; | |
673 | break; | |
674 | case -ENOENT: | |
675 | explanation = "endpoint not enabled"; | |
676 | break; | |
677 | case -EPIPE: | |
678 | explanation = "endpoint stalled"; | |
679 | break; | |
680 | case -ENOSPC: | |
681 | explanation = "not enough bandwidth"; | |
682 | break; | |
683 | case -ESHUTDOWN: | |
684 | explanation = "device disabled"; | |
685 | break; | |
686 | case -EHOSTUNREACH: | |
687 | explanation = "device suspended"; | |
688 | break; | |
689 | case -EINVAL: | |
690 | case -EAGAIN: | |
691 | case -EFBIG: | |
692 | case -EMSGSIZE: | |
693 | explanation = "internal error"; | |
694 | break; | |
68a351c5 JD |
695 | case -EILSEQ: |
696 | case -EPROTO: | |
697 | case -ETIME: | |
698 | case -ETIMEDOUT: | |
699 | explanation = "protocol error"; | |
700 | if (hso_dev) | |
701 | schedule_work(&hso_dev->reset_device); | |
702 | break; | |
72dc1c09 GKH |
703 | default: |
704 | explanation = "unknown status"; | |
705 | break; | |
706 | } | |
68a351c5 JD |
707 | |
708 | /* log a meaningful explanation of an USB status */ | |
72dc1c09 GKH |
709 | D1("%s: received USB status - %s (%d)", function, explanation, status); |
710 | } | |
711 | ||
712 | /* Network interface functions */ | |
713 | ||
714 | /* called when net interface is brought up by ifconfig */ | |
715 | static int hso_net_open(struct net_device *net) | |
716 | { | |
717 | struct hso_net *odev = netdev_priv(net); | |
718 | unsigned long flags = 0; | |
719 | ||
720 | if (!odev) { | |
721 | dev_err(&net->dev, "No net device !\n"); | |
722 | return -ENODEV; | |
723 | } | |
724 | ||
725 | odev->skb_tx_buf = NULL; | |
726 | ||
727 | /* setup environment */ | |
728 | spin_lock_irqsave(&odev->net_lock, flags); | |
729 | odev->rx_parse_state = WAIT_IP; | |
730 | odev->rx_buf_size = 0; | |
731 | odev->rx_buf_missing = sizeof(struct iphdr); | |
732 | spin_unlock_irqrestore(&odev->net_lock, flags); | |
733 | ||
72dc1c09 GKH |
734 | /* We are up and running. */ |
735 | set_bit(HSO_NET_RUNNING, &odev->flags); | |
889bd9b6 | 736 | hso_start_net_device(odev->parent); |
72dc1c09 GKH |
737 | |
738 | /* Tell the kernel we are ready to start receiving from it */ | |
739 | netif_start_queue(net); | |
740 | ||
741 | return 0; | |
742 | } | |
743 | ||
744 | /* called when interface is brought down by ifconfig */ | |
745 | static int hso_net_close(struct net_device *net) | |
746 | { | |
747 | struct hso_net *odev = netdev_priv(net); | |
748 | ||
749 | /* we don't need the queue anymore */ | |
750 | netif_stop_queue(net); | |
751 | /* no longer running */ | |
752 | clear_bit(HSO_NET_RUNNING, &odev->flags); | |
753 | ||
754 | hso_stop_net_device(odev->parent); | |
755 | ||
756 | /* done */ | |
757 | return 0; | |
758 | } | |
759 | ||
760 | /* USB tells is xmit done, we should start the netqueue again */ | |
761 | static void write_bulk_callback(struct urb *urb) | |
762 | { | |
763 | struct hso_net *odev = urb->context; | |
764 | int status = urb->status; | |
765 | ||
766 | /* Sanity check */ | |
767 | if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { | |
768 | dev_err(&urb->dev->dev, "%s: device not running\n", __func__); | |
769 | return; | |
770 | } | |
771 | ||
772 | /* Do we still have a valid kernel network device? */ | |
773 | if (!netif_device_present(odev->net)) { | |
774 | dev_err(&urb->dev->dev, "%s: net device not present\n", | |
775 | __func__); | |
776 | return; | |
777 | } | |
778 | ||
779 | /* log status, but don't act on it, we don't need to resubmit anything | |
780 | * anyhow */ | |
781 | if (status) | |
68a351c5 | 782 | handle_usb_error(status, __func__, odev->parent); |
72dc1c09 GKH |
783 | |
784 | hso_put_activity(odev->parent); | |
785 | ||
786 | /* Tell the network interface we are ready for another frame */ | |
787 | netif_wake_queue(odev->net); | |
788 | } | |
789 | ||
790 | /* called by kernel when we need to transmit a packet */ | |
25a79c41 SH |
791 | static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb, |
792 | struct net_device *net) | |
72dc1c09 GKH |
793 | { |
794 | struct hso_net *odev = netdev_priv(net); | |
795 | int result; | |
796 | ||
797 | /* Tell the kernel, "No more frames 'til we are done with this one." */ | |
798 | netif_stop_queue(net); | |
799 | if (hso_get_activity(odev->parent) == -EAGAIN) { | |
800 | odev->skb_tx_buf = skb; | |
6ed10654 | 801 | return NETDEV_TX_OK; |
72dc1c09 GKH |
802 | } |
803 | ||
804 | /* log if asked */ | |
805 | DUMP1(skb->data, skb->len); | |
806 | /* Copy it from kernel memory to OUR memory */ | |
807 | memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len); | |
808 | D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE); | |
809 | ||
810 | /* Fill in the URB for shipping it out. */ | |
811 | usb_fill_bulk_urb(odev->mux_bulk_tx_urb, | |
812 | odev->parent->usb, | |
813 | usb_sndbulkpipe(odev->parent->usb, | |
814 | odev->out_endp-> | |
815 | bEndpointAddress & 0x7F), | |
816 | odev->mux_bulk_tx_buf, skb->len, write_bulk_callback, | |
817 | odev); | |
818 | ||
819 | /* Deal with the Zero Length packet problem, I hope */ | |
820 | odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET; | |
821 | ||
822 | /* Send the URB on its merry way. */ | |
823 | result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC); | |
824 | if (result) { | |
825 | dev_warn(&odev->parent->interface->dev, | |
8a5c9c49 | 826 | "failed mux_bulk_tx_urb %d\n", result); |
72dc1c09 GKH |
827 | net->stats.tx_errors++; |
828 | netif_start_queue(net); | |
829 | } else { | |
830 | net->stats.tx_packets++; | |
831 | net->stats.tx_bytes += skb->len; | |
72dc1c09 GKH |
832 | } |
833 | dev_kfree_skb(skb); | |
834 | /* we're done */ | |
5b2c4b97 | 835 | return NETDEV_TX_OK; |
72dc1c09 GKH |
836 | } |
837 | ||
0fc0b732 | 838 | static const struct ethtool_ops ops = { |
72dc1c09 GKH |
839 | .get_link = ethtool_op_get_link |
840 | }; | |
841 | ||
842 | /* called when a packet did not ack after watchdogtimeout */ | |
843 | static void hso_net_tx_timeout(struct net_device *net) | |
844 | { | |
845 | struct hso_net *odev = netdev_priv(net); | |
846 | ||
847 | if (!odev) | |
848 | return; | |
849 | ||
850 | /* Tell syslog we are hosed. */ | |
851 | dev_warn(&net->dev, "Tx timed out.\n"); | |
852 | ||
853 | /* Tear the waiting frame off the list */ | |
8e95a202 JP |
854 | if (odev->mux_bulk_tx_urb && |
855 | (odev->mux_bulk_tx_urb->status == -EINPROGRESS)) | |
72dc1c09 GKH |
856 | usb_unlink_urb(odev->mux_bulk_tx_urb); |
857 | ||
858 | /* Update statistics */ | |
859 | net->stats.tx_errors++; | |
860 | } | |
861 | ||
862 | /* make a real packet from the received USB buffer */ | |
863 | static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt, | |
864 | unsigned int count, unsigned char is_eop) | |
865 | { | |
866 | unsigned short temp_bytes; | |
867 | unsigned short buffer_offset = 0; | |
868 | unsigned short frame_len; | |
869 | unsigned char *tmp_rx_buf; | |
870 | ||
871 | /* log if needed */ | |
872 | D1("Rx %d bytes", count); | |
873 | DUMP(ip_pkt, min(128, (int)count)); | |
874 | ||
875 | while (count) { | |
876 | switch (odev->rx_parse_state) { | |
877 | case WAIT_IP: | |
878 | /* waiting for IP header. */ | |
879 | /* wanted bytes - size of ip header */ | |
880 | temp_bytes = | |
881 | (count < | |
882 | odev->rx_buf_missing) ? count : odev-> | |
883 | rx_buf_missing; | |
884 | ||
885 | memcpy(((unsigned char *)(&odev->rx_ip_hdr)) + | |
886 | odev->rx_buf_size, ip_pkt + buffer_offset, | |
887 | temp_bytes); | |
888 | ||
889 | odev->rx_buf_size += temp_bytes; | |
890 | buffer_offset += temp_bytes; | |
891 | odev->rx_buf_missing -= temp_bytes; | |
892 | count -= temp_bytes; | |
893 | ||
894 | if (!odev->rx_buf_missing) { | |
895 | /* header is complete allocate an sk_buffer and | |
896 | * continue to WAIT_DATA */ | |
897 | frame_len = ntohs(odev->rx_ip_hdr.tot_len); | |
898 | ||
899 | if ((frame_len > DEFAULT_MRU) || | |
900 | (frame_len < sizeof(struct iphdr))) { | |
901 | dev_err(&odev->net->dev, | |
902 | "Invalid frame (%d) length\n", | |
903 | frame_len); | |
904 | odev->rx_parse_state = WAIT_SYNC; | |
905 | continue; | |
906 | } | |
907 | /* Allocate an sk_buff */ | |
d65a68a8 PZ |
908 | odev->skb_rx_buf = netdev_alloc_skb(odev->net, |
909 | frame_len); | |
72dc1c09 GKH |
910 | if (!odev->skb_rx_buf) { |
911 | /* We got no receive buffer. */ | |
912 | D1("could not allocate memory"); | |
913 | odev->rx_parse_state = WAIT_SYNC; | |
914 | return; | |
915 | } | |
72dc1c09 GKH |
916 | |
917 | /* Copy what we got so far. make room for iphdr | |
918 | * after tail. */ | |
919 | tmp_rx_buf = | |
920 | skb_put(odev->skb_rx_buf, | |
921 | sizeof(struct iphdr)); | |
922 | memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr), | |
923 | sizeof(struct iphdr)); | |
924 | ||
925 | /* ETH_HLEN */ | |
926 | odev->rx_buf_size = sizeof(struct iphdr); | |
927 | ||
928 | /* Filip actually use .tot_len */ | |
929 | odev->rx_buf_missing = | |
930 | frame_len - sizeof(struct iphdr); | |
931 | odev->rx_parse_state = WAIT_DATA; | |
932 | } | |
933 | break; | |
934 | ||
935 | case WAIT_DATA: | |
936 | temp_bytes = (count < odev->rx_buf_missing) | |
937 | ? count : odev->rx_buf_missing; | |
938 | ||
939 | /* Copy the rest of the bytes that are left in the | |
940 | * buffer into the waiting sk_buf. */ | |
941 | /* Make room for temp_bytes after tail. */ | |
942 | tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes); | |
943 | memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes); | |
944 | ||
945 | odev->rx_buf_missing -= temp_bytes; | |
946 | count -= temp_bytes; | |
947 | buffer_offset += temp_bytes; | |
948 | odev->rx_buf_size += temp_bytes; | |
949 | if (!odev->rx_buf_missing) { | |
950 | /* Packet is complete. Inject into stack. */ | |
951 | /* We have IP packet here */ | |
09640e63 | 952 | odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP); |
72dc1c09 GKH |
953 | skb_reset_mac_header(odev->skb_rx_buf); |
954 | ||
955 | /* Ship it off to the kernel */ | |
956 | netif_rx(odev->skb_rx_buf); | |
957 | /* No longer our buffer. */ | |
958 | odev->skb_rx_buf = NULL; | |
959 | ||
960 | /* update out statistics */ | |
961 | odev->net->stats.rx_packets++; | |
962 | ||
963 | odev->net->stats.rx_bytes += odev->rx_buf_size; | |
964 | ||
965 | odev->rx_buf_size = 0; | |
966 | odev->rx_buf_missing = sizeof(struct iphdr); | |
967 | odev->rx_parse_state = WAIT_IP; | |
968 | } | |
969 | break; | |
970 | ||
971 | case WAIT_SYNC: | |
972 | D1(" W_S"); | |
973 | count = 0; | |
974 | break; | |
975 | default: | |
976 | D1(" "); | |
977 | count--; | |
978 | break; | |
979 | } | |
980 | } | |
981 | ||
982 | /* Recovery mechanism for WAIT_SYNC state. */ | |
983 | if (is_eop) { | |
984 | if (odev->rx_parse_state == WAIT_SYNC) { | |
985 | odev->rx_parse_state = WAIT_IP; | |
986 | odev->rx_buf_size = 0; | |
987 | odev->rx_buf_missing = sizeof(struct iphdr); | |
988 | } | |
989 | } | |
990 | } | |
991 | ||
5591c75d JP |
992 | static void fix_crc_bug(struct urb *urb, __le16 max_packet_size) |
993 | { | |
994 | static const u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF }; | |
995 | u32 rest = urb->actual_length % le16_to_cpu(max_packet_size); | |
996 | ||
997 | if (((rest == 5) || (rest == 6)) && | |
998 | !memcmp(((u8 *)urb->transfer_buffer) + urb->actual_length - 4, | |
999 | crc_check, 4)) { | |
1000 | urb->actual_length -= 4; | |
1001 | } | |
1002 | } | |
1003 | ||
72dc1c09 GKH |
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 | ||
5591c75d JP |
1032 | if (odev->parent->port_spec & HSO_INFO_CRC_BUG) |
1033 | fix_crc_bug(urb, odev->in_endp->wMaxPacketSize); | |
72dc1c09 GKH |
1034 | |
1035 | /* do we even have a packet? */ | |
1036 | if (urb->actual_length) { | |
1037 | /* Handle the IP stream, add header and push it onto network | |
1038 | * stack if the packet is complete. */ | |
1039 | spin_lock(&odev->net_lock); | |
1040 | packetizeRx(odev, urb->transfer_buffer, urb->actual_length, | |
1041 | (urb->transfer_buffer_length > | |
1042 | urb->actual_length) ? 1 : 0); | |
1043 | spin_unlock(&odev->net_lock); | |
1044 | } | |
1045 | ||
1046 | /* We are done with this URB, resubmit it. Prep the USB to wait for | |
1047 | * another frame. Reuse same as received. */ | |
1048 | usb_fill_bulk_urb(urb, | |
1049 | odev->parent->usb, | |
1050 | usb_rcvbulkpipe(odev->parent->usb, | |
1051 | odev->in_endp-> | |
1052 | bEndpointAddress & 0x7F), | |
1053 | urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE, | |
1054 | read_bulk_callback, odev); | |
1055 | ||
1056 | /* Give this to the USB subsystem so it can tell us when more data | |
1057 | * arrives. */ | |
1058 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1059 | if (result) | |
1060 | dev_warn(&odev->parent->interface->dev, | |
8a5c9c49 | 1061 | "%s failed submit mux_bulk_rx_urb %d\n", __func__, |
72dc1c09 GKH |
1062 | result); |
1063 | } | |
1064 | ||
1065 | /* Serial driver functions */ | |
1066 | ||
ac9720c3 | 1067 | static void hso_init_termios(struct ktermios *termios) |
72dc1c09 | 1068 | { |
72dc1c09 GKH |
1069 | /* |
1070 | * The default requirements for this device are: | |
1071 | */ | |
72dc1c09 GKH |
1072 | termios->c_iflag &= |
1073 | ~(IGNBRK /* disable ignore break */ | |
1074 | | BRKINT /* disable break causes interrupt */ | |
1075 | | PARMRK /* disable mark parity errors */ | |
1076 | | ISTRIP /* disable clear high bit of input characters */ | |
1077 | | INLCR /* disable translate NL to CR */ | |
1078 | | IGNCR /* disable ignore CR */ | |
1079 | | ICRNL /* disable translate CR to NL */ | |
1080 | | IXON); /* disable enable XON/XOFF flow control */ | |
1081 | ||
1082 | /* disable postprocess output characters */ | |
1083 | termios->c_oflag &= ~OPOST; | |
1084 | ||
1085 | termios->c_lflag &= | |
1086 | ~(ECHO /* disable echo input characters */ | |
1087 | | ECHONL /* disable echo new line */ | |
1088 | | ICANON /* disable erase, kill, werase, and rprnt | |
1089 | special characters */ | |
1090 | | ISIG /* disable interrupt, quit, and suspend special | |
1091 | characters */ | |
1092 | | IEXTEN); /* disable non-POSIX special characters */ | |
1093 | ||
1094 | termios->c_cflag &= | |
1095 | ~(CSIZE /* no size */ | |
1096 | | PARENB /* disable parity bit */ | |
1097 | | CBAUD /* clear current baud rate */ | |
1098 | | CBAUDEX); /* clear current buad rate */ | |
1099 | ||
1100 | termios->c_cflag |= CS8; /* character size 8 bits */ | |
1101 | ||
1102 | /* baud rate 115200 */ | |
ac9720c3 AC |
1103 | tty_termios_encode_baud_rate(termios, 115200, 115200); |
1104 | } | |
1105 | ||
1106 | static void _hso_serial_set_termios(struct tty_struct *tty, | |
1107 | struct ktermios *old) | |
1108 | { | |
30409420 | 1109 | struct hso_serial *serial = tty->driver_data; |
ac9720c3 AC |
1110 | struct ktermios *termios; |
1111 | ||
1112 | if (!serial) { | |
1113 | printk(KERN_ERR "%s: no tty structures", __func__); | |
1114 | return; | |
1115 | } | |
1116 | ||
1117 | D4("port %d", serial->minor); | |
72dc1c09 GKH |
1118 | |
1119 | /* | |
ac9720c3 | 1120 | * Fix up unsupported bits |
72dc1c09 | 1121 | */ |
ac9720c3 AC |
1122 | termios = tty->termios; |
1123 | termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */ | |
1124 | ||
1125 | termios->c_cflag &= | |
1126 | ~(CSIZE /* no size */ | |
1127 | | PARENB /* disable parity bit */ | |
1128 | | CBAUD /* clear current baud rate */ | |
1129 | | CBAUDEX); /* clear current buad rate */ | |
1130 | ||
1131 | termios->c_cflag |= CS8; /* character size 8 bits */ | |
1132 | ||
1133 | /* baud rate 115200 */ | |
1134 | tty_encode_baud_rate(tty, 115200, 115200); | |
72dc1c09 GKH |
1135 | } |
1136 | ||
8ef5ba63 DJB |
1137 | static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb) |
1138 | { | |
1139 | int result; | |
8ef5ba63 DJB |
1140 | /* We are done with this URB, resubmit it. Prep the USB to wait for |
1141 | * another frame */ | |
1142 | usb_fill_bulk_urb(urb, serial->parent->usb, | |
1143 | usb_rcvbulkpipe(serial->parent->usb, | |
1144 | serial->in_endp-> | |
1145 | bEndpointAddress & 0x7F), | |
1146 | urb->transfer_buffer, serial->rx_data_length, | |
1147 | hso_std_serial_read_bulk_callback, serial); | |
1148 | /* Give this to the USB subsystem so it can tell us when more data | |
1149 | * arrives. */ | |
1150 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1151 | if (result) { | |
1152 | dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n", | |
1153 | __func__, result); | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | ||
1158 | ||
1159 | ||
1160 | static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial) | |
1161 | { | |
1162 | int count; | |
1163 | struct urb *curr_urb; | |
1164 | ||
1165 | while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) { | |
1166 | curr_urb = serial->rx_urb[serial->curr_rx_urb_idx]; | |
1167 | count = put_rxbuf_data(curr_urb, serial); | |
1168 | if (count == -1) | |
1169 | return; | |
1170 | if (count == 0) { | |
1171 | serial->curr_rx_urb_idx++; | |
1172 | if (serial->curr_rx_urb_idx >= serial->num_rx_urbs) | |
1173 | serial->curr_rx_urb_idx = 0; | |
1174 | hso_resubmit_rx_bulk_urb(serial, curr_urb); | |
1175 | } | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial) | |
1180 | { | |
1181 | int count = 0; | |
1182 | struct urb *urb; | |
1183 | ||
1184 | urb = serial->rx_urb[0]; | |
5ce76e77 | 1185 | if (serial->port.count > 0) { |
8ef5ba63 DJB |
1186 | count = put_rxbuf_data(urb, serial); |
1187 | if (count == -1) | |
1188 | return; | |
1189 | } | |
1190 | /* Re issue a read as long as we receive data. */ | |
1191 | ||
1192 | if (count == 0 && ((urb->actual_length != 0) || | |
1193 | (serial->rx_state == RX_PENDING))) { | |
1194 | serial->rx_state = RX_SENT; | |
1195 | hso_mux_serial_read(serial); | |
1196 | } else | |
1197 | serial->rx_state = RX_IDLE; | |
1198 | } | |
1199 | ||
1200 | ||
1201 | /* read callback for Diag and CS port */ | |
1202 | static void hso_std_serial_read_bulk_callback(struct urb *urb) | |
1203 | { | |
1204 | struct hso_serial *serial = urb->context; | |
1205 | int status = urb->status; | |
1206 | ||
1207 | /* sanity check */ | |
1208 | if (!serial) { | |
1209 | D1("serial == NULL"); | |
1210 | return; | |
1211 | } else if (status) { | |
68a351c5 | 1212 | handle_usb_error(status, __func__, serial->parent); |
8ef5ba63 DJB |
1213 | return; |
1214 | } | |
1215 | ||
1216 | D4("\n--- Got serial_read_bulk callback %02x ---", status); | |
1217 | D1("Actual length = %d\n", urb->actual_length); | |
1218 | DUMP1(urb->transfer_buffer, urb->actual_length); | |
1219 | ||
1220 | /* Anyone listening? */ | |
5ce76e77 | 1221 | if (serial->port.count == 0) |
8ef5ba63 DJB |
1222 | return; |
1223 | ||
1224 | if (status == 0) { | |
5591c75d JP |
1225 | if (serial->parent->port_spec & HSO_INFO_CRC_BUG) |
1226 | fix_crc_bug(urb, serial->in_endp->wMaxPacketSize); | |
8ef5ba63 DJB |
1227 | /* Valid data, handle RX data */ |
1228 | spin_lock(&serial->serial_lock); | |
1229 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1; | |
1230 | put_rxbuf_data_and_resubmit_bulk_urb(serial); | |
1231 | spin_unlock(&serial->serial_lock); | |
1232 | } else if (status == -ENOENT || status == -ECONNRESET) { | |
1233 | /* Unlinked - check for throttled port. */ | |
1234 | D2("Port %d, successfully unlinked urb", serial->minor); | |
1235 | spin_lock(&serial->serial_lock); | |
1236 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; | |
1237 | hso_resubmit_rx_bulk_urb(serial, urb); | |
1238 | spin_unlock(&serial->serial_lock); | |
1239 | } else { | |
1240 | D2("Port %d, status = %d for read urb", serial->minor, status); | |
1241 | return; | |
1242 | } | |
1243 | } | |
1244 | ||
1245 | /* | |
1246 | * This needs to be a tasklet otherwise we will | |
1247 | * end up recursively calling this function. | |
1248 | */ | |
0227abc9 | 1249 | static void hso_unthrottle_tasklet(struct hso_serial *serial) |
8ef5ba63 DJB |
1250 | { |
1251 | unsigned long flags; | |
1252 | ||
1253 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1254 | if ((serial->parent->port_spec & HSO_INTF_MUX)) | |
1255 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); | |
1256 | else | |
1257 | put_rxbuf_data_and_resubmit_bulk_urb(serial); | |
1258 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1259 | } | |
1260 | ||
1261 | static void hso_unthrottle(struct tty_struct *tty) | |
1262 | { | |
30409420 | 1263 | struct hso_serial *serial = tty->driver_data; |
8ef5ba63 DJB |
1264 | |
1265 | tasklet_hi_schedule(&serial->unthrottle_tasklet); | |
1266 | } | |
1267 | ||
0227abc9 | 1268 | static void hso_unthrottle_workfunc(struct work_struct *work) |
8ef5ba63 DJB |
1269 | { |
1270 | struct hso_serial *serial = | |
1271 | container_of(work, struct hso_serial, | |
1272 | retry_unthrottle_workqueue); | |
1273 | hso_unthrottle_tasklet(serial); | |
1274 | } | |
1275 | ||
72dc1c09 GKH |
1276 | /* open the requested serial port */ |
1277 | static int hso_serial_open(struct tty_struct *tty, struct file *filp) | |
1278 | { | |
1279 | struct hso_serial *serial = get_serial_by_index(tty->index); | |
ab153d84 | 1280 | int result; |
72dc1c09 GKH |
1281 | |
1282 | /* sanity check */ | |
1283 | if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) { | |
e136e303 | 1284 | WARN_ON(1); |
72dc1c09 GKH |
1285 | tty->driver_data = NULL; |
1286 | D1("Failed to open port"); | |
1287 | return -ENODEV; | |
1288 | } | |
1289 | ||
ab153d84 | 1290 | mutex_lock(&serial->parent->mutex); |
ab153d84 DM |
1291 | result = usb_autopm_get_interface(serial->parent->interface); |
1292 | if (result < 0) | |
72dc1c09 GKH |
1293 | goto err_out; |
1294 | ||
1295 | D1("Opening %d", serial->minor); | |
1296 | kref_get(&serial->parent->ref); | |
1297 | ||
1298 | /* setup */ | |
1299 | tty->driver_data = serial; | |
9f8c0b08 | 1300 | tty_port_tty_set(&serial->port, tty); |
72dc1c09 | 1301 | |
2f9889a2 | 1302 | /* check for port already opened, if not set the termios */ |
5ce76e77 JS |
1303 | serial->port.count++; |
1304 | if (serial->port.count == 1) { | |
8ef5ba63 | 1305 | serial->rx_state = RX_IDLE; |
72dc1c09 GKH |
1306 | /* Force default termio settings */ |
1307 | _hso_serial_set_termios(tty, NULL); | |
8ef5ba63 DJB |
1308 | tasklet_init(&serial->unthrottle_tasklet, |
1309 | (void (*)(unsigned long))hso_unthrottle_tasklet, | |
1310 | (unsigned long)serial); | |
1311 | INIT_WORK(&serial->retry_unthrottle_workqueue, | |
1312 | hso_unthrottle_workfunc); | |
ab153d84 DM |
1313 | result = hso_start_serial_device(serial->parent, GFP_KERNEL); |
1314 | if (result) { | |
72dc1c09 | 1315 | hso_stop_serial_device(serial->parent); |
5ce76e77 | 1316 | serial->port.count--; |
ab153d84 | 1317 | kref_put(&serial->parent->ref, hso_serial_ref_free); |
72dc1c09 GKH |
1318 | } |
1319 | } else { | |
1320 | D1("Port was already open"); | |
1321 | } | |
1322 | ||
1323 | usb_autopm_put_interface(serial->parent->interface); | |
1324 | ||
1325 | /* done */ | |
ab153d84 | 1326 | if (result) |
20b9d177 | 1327 | hso_serial_tiocmset(tty, TIOCM_RTS | TIOCM_DTR, 0); |
72dc1c09 | 1328 | err_out: |
ab153d84 DM |
1329 | mutex_unlock(&serial->parent->mutex); |
1330 | return result; | |
72dc1c09 GKH |
1331 | } |
1332 | ||
1333 | /* close the requested serial port */ | |
1334 | static void hso_serial_close(struct tty_struct *tty, struct file *filp) | |
1335 | { | |
1336 | struct hso_serial *serial = tty->driver_data; | |
1337 | u8 usb_gone; | |
1338 | ||
1339 | D1("Closing serial port"); | |
1340 | ||
e136e303 AC |
1341 | /* Open failed, no close cleanup required */ |
1342 | if (serial == NULL) | |
1343 | return; | |
1344 | ||
ab153d84 | 1345 | mutex_lock(&serial->parent->mutex); |
72dc1c09 GKH |
1346 | usb_gone = serial->parent->usb_gone; |
1347 | ||
1348 | if (!usb_gone) | |
1349 | usb_autopm_get_interface(serial->parent->interface); | |
1350 | ||
1351 | /* reset the rts and dtr */ | |
1352 | /* do the actual close */ | |
5ce76e77 | 1353 | serial->port.count--; |
dcfcb256 | 1354 | |
5ce76e77 JS |
1355 | if (serial->port.count <= 0) { |
1356 | serial->port.count = 0; | |
9f8c0b08 | 1357 | tty_port_tty_set(&serial->port, NULL); |
72dc1c09 GKH |
1358 | if (!usb_gone) |
1359 | hso_stop_serial_device(serial->parent); | |
8ef5ba63 DJB |
1360 | tasklet_kill(&serial->unthrottle_tasklet); |
1361 | cancel_work_sync(&serial->retry_unthrottle_workqueue); | |
72dc1c09 | 1362 | } |
8ef5ba63 | 1363 | |
72dc1c09 GKH |
1364 | if (!usb_gone) |
1365 | usb_autopm_put_interface(serial->parent->interface); | |
ab153d84 DM |
1366 | |
1367 | mutex_unlock(&serial->parent->mutex); | |
dcfcb256 AK |
1368 | |
1369 | kref_put(&serial->parent->ref, hso_serial_ref_free); | |
72dc1c09 GKH |
1370 | } |
1371 | ||
1372 | /* close the requested serial port */ | |
1373 | static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf, | |
1374 | int count) | |
1375 | { | |
30409420 | 1376 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1377 | int space, tx_bytes; |
1378 | unsigned long flags; | |
1379 | ||
1380 | /* sanity check */ | |
1381 | if (serial == NULL) { | |
1382 | printk(KERN_ERR "%s: serial is NULL\n", __func__); | |
1383 | return -ENODEV; | |
1384 | } | |
1385 | ||
1386 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1387 | ||
1388 | space = serial->tx_data_length - serial->tx_buffer_count; | |
1389 | tx_bytes = (count < space) ? count : space; | |
1390 | ||
1391 | if (!tx_bytes) | |
1392 | goto out; | |
1393 | ||
1394 | memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes); | |
1395 | serial->tx_buffer_count += tx_bytes; | |
1396 | ||
1397 | out: | |
1398 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1399 | ||
1400 | hso_kick_transmit(serial); | |
1401 | /* done */ | |
1402 | return tx_bytes; | |
1403 | } | |
1404 | ||
1405 | /* how much room is there for writing */ | |
1406 | static int hso_serial_write_room(struct tty_struct *tty) | |
1407 | { | |
30409420 | 1408 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1409 | int room; |
1410 | unsigned long flags; | |
1411 | ||
1412 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1413 | room = serial->tx_data_length - serial->tx_buffer_count; | |
1414 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1415 | ||
1416 | /* return free room */ | |
1417 | return room; | |
1418 | } | |
1419 | ||
1420 | /* setup the term */ | |
1421 | static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old) | |
1422 | { | |
30409420 | 1423 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1424 | unsigned long flags; |
1425 | ||
1426 | if (old) | |
1427 | D5("Termios called with: cflags new[%d] - old[%d]", | |
1428 | tty->termios->c_cflag, old->c_cflag); | |
1429 | ||
1430 | /* the actual setup */ | |
1431 | spin_lock_irqsave(&serial->serial_lock, flags); | |
5ce76e77 | 1432 | if (serial->port.count) |
72dc1c09 GKH |
1433 | _hso_serial_set_termios(tty, old); |
1434 | else | |
1435 | tty->termios = old; | |
1436 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1437 | ||
1438 | /* done */ | |
72dc1c09 GKH |
1439 | } |
1440 | ||
1441 | /* how many characters in the buffer */ | |
1442 | static int hso_serial_chars_in_buffer(struct tty_struct *tty) | |
1443 | { | |
30409420 | 1444 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1445 | int chars; |
1446 | unsigned long flags; | |
1447 | ||
1448 | /* sanity check */ | |
1449 | if (serial == NULL) | |
1450 | return 0; | |
1451 | ||
1452 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1453 | chars = serial->tx_buffer_count; | |
1454 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1455 | ||
1456 | return chars; | |
1457 | } | |
0227abc9 HE |
1458 | static int tiocmget_submit_urb(struct hso_serial *serial, |
1459 | struct hso_tiocmget *tiocmget, | |
1460 | struct usb_device *usb) | |
542f5482 DJB |
1461 | { |
1462 | int result; | |
1463 | ||
1464 | if (serial->parent->usb_gone) | |
1465 | return -ENODEV; | |
1466 | usb_fill_int_urb(tiocmget->urb, usb, | |
1467 | usb_rcvintpipe(usb, | |
1468 | tiocmget->endp-> | |
1469 | bEndpointAddress & 0x7F), | |
1470 | &tiocmget->serial_state_notification, | |
1471 | sizeof(struct hso_serial_state_notification), | |
1472 | tiocmget_intr_callback, serial, | |
1473 | tiocmget->endp->bInterval); | |
1474 | result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC); | |
1475 | if (result) { | |
1476 | dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__, | |
1477 | result); | |
1478 | } | |
1479 | return result; | |
1480 | ||
1481 | } | |
1482 | ||
1483 | static void tiocmget_intr_callback(struct urb *urb) | |
1484 | { | |
1485 | struct hso_serial *serial = urb->context; | |
1486 | struct hso_tiocmget *tiocmget; | |
1487 | int status = urb->status; | |
1488 | u16 UART_state_bitmap, prev_UART_state_bitmap; | |
1489 | struct uart_icount *icount; | |
1490 | struct hso_serial_state_notification *serial_state_notification; | |
1491 | struct usb_device *usb; | |
1492 | ||
1493 | /* Sanity checks */ | |
1494 | if (!serial) | |
1495 | return; | |
1496 | if (status) { | |
68a351c5 | 1497 | handle_usb_error(status, __func__, serial->parent); |
542f5482 DJB |
1498 | return; |
1499 | } | |
1500 | tiocmget = serial->tiocmget; | |
1501 | if (!tiocmget) | |
1502 | return; | |
1503 | usb = serial->parent->usb; | |
1504 | serial_state_notification = &tiocmget->serial_state_notification; | |
1505 | if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE || | |
1506 | serial_state_notification->bNotification != B_NOTIFICATION || | |
1507 | le16_to_cpu(serial_state_notification->wValue) != W_VALUE || | |
1508 | le16_to_cpu(serial_state_notification->wIndex) != W_INDEX || | |
1509 | le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) { | |
1510 | dev_warn(&usb->dev, | |
1511 | "hso received invalid serial state notification\n"); | |
1512 | DUMP(serial_state_notification, | |
9ce673d5 | 1513 | sizeof(struct hso_serial_state_notification)); |
542f5482 DJB |
1514 | } else { |
1515 | ||
1516 | UART_state_bitmap = le16_to_cpu(serial_state_notification-> | |
1517 | UART_state_bitmap); | |
1518 | prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap; | |
1519 | icount = &tiocmget->icount; | |
1520 | spin_lock(&serial->serial_lock); | |
1521 | if ((UART_state_bitmap & B_OVERRUN) != | |
1522 | (prev_UART_state_bitmap & B_OVERRUN)) | |
1523 | icount->parity++; | |
1524 | if ((UART_state_bitmap & B_PARITY) != | |
1525 | (prev_UART_state_bitmap & B_PARITY)) | |
1526 | icount->parity++; | |
1527 | if ((UART_state_bitmap & B_FRAMING) != | |
1528 | (prev_UART_state_bitmap & B_FRAMING)) | |
1529 | icount->frame++; | |
1530 | if ((UART_state_bitmap & B_RING_SIGNAL) && | |
1531 | !(prev_UART_state_bitmap & B_RING_SIGNAL)) | |
1532 | icount->rng++; | |
1533 | if ((UART_state_bitmap & B_BREAK) != | |
1534 | (prev_UART_state_bitmap & B_BREAK)) | |
1535 | icount->brk++; | |
1536 | if ((UART_state_bitmap & B_TX_CARRIER) != | |
1537 | (prev_UART_state_bitmap & B_TX_CARRIER)) | |
1538 | icount->dsr++; | |
1539 | if ((UART_state_bitmap & B_RX_CARRIER) != | |
1540 | (prev_UART_state_bitmap & B_RX_CARRIER)) | |
1541 | icount->dcd++; | |
1542 | tiocmget->prev_UART_state_bitmap = UART_state_bitmap; | |
1543 | spin_unlock(&serial->serial_lock); | |
1544 | tiocmget->intr_completed = 1; | |
1545 | wake_up_interruptible(&tiocmget->waitq); | |
1546 | } | |
1547 | memset(serial_state_notification, 0, | |
1548 | sizeof(struct hso_serial_state_notification)); | |
1549 | tiocmget_submit_urb(serial, | |
1550 | tiocmget, | |
1551 | serial->parent->usb); | |
1552 | } | |
1553 | ||
1554 | /* | |
1555 | * next few functions largely stolen from drivers/serial/serial_core.c | |
1556 | */ | |
1557 | /* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
1558 | * - mask passed in arg for lines of interest | |
1559 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
1560 | * Caller should use TIOCGICOUNT to see which one it was | |
1561 | */ | |
1562 | static int | |
1563 | hso_wait_modem_status(struct hso_serial *serial, unsigned long arg) | |
1564 | { | |
1565 | DECLARE_WAITQUEUE(wait, current); | |
1566 | struct uart_icount cprev, cnow; | |
1567 | struct hso_tiocmget *tiocmget; | |
1568 | int ret; | |
1569 | ||
1570 | tiocmget = serial->tiocmget; | |
1571 | if (!tiocmget) | |
1572 | return -ENOENT; | |
1573 | /* | |
1574 | * note the counters on entry | |
1575 | */ | |
1576 | spin_lock_irq(&serial->serial_lock); | |
1577 | memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount)); | |
1578 | spin_unlock_irq(&serial->serial_lock); | |
1579 | add_wait_queue(&tiocmget->waitq, &wait); | |
1580 | for (;;) { | |
1581 | spin_lock_irq(&serial->serial_lock); | |
1582 | memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount)); | |
1583 | spin_unlock_irq(&serial->serial_lock); | |
1584 | set_current_state(TASK_INTERRUPTIBLE); | |
1585 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1586 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1587 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) { | |
1588 | ret = 0; | |
1589 | break; | |
1590 | } | |
1591 | schedule(); | |
1592 | /* see if a signal did it */ | |
1593 | if (signal_pending(current)) { | |
1594 | ret = -ERESTARTSYS; | |
1595 | break; | |
1596 | } | |
1597 | cprev = cnow; | |
1598 | } | |
1599 | current->state = TASK_RUNNING; | |
1600 | remove_wait_queue(&tiocmget->waitq, &wait); | |
1601 | ||
1602 | return ret; | |
1603 | } | |
1604 | ||
1605 | /* | |
1606 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
1607 | * Return: write counters to the user passed counter struct | |
1608 | * NB: both 1->0 and 0->1 transitions are counted except for | |
1609 | * RI where only 0->1 is counted. | |
1610 | */ | |
0bca1b91 AC |
1611 | static int hso_get_count(struct tty_struct *tty, |
1612 | struct serial_icounter_struct *icount) | |
542f5482 | 1613 | { |
542f5482 | 1614 | struct uart_icount cnow; |
30409420 | 1615 | struct hso_serial *serial = tty->driver_data; |
542f5482 DJB |
1616 | struct hso_tiocmget *tiocmget = serial->tiocmget; |
1617 | ||
22ad7499 | 1618 | memset(icount, 0, sizeof(struct serial_icounter_struct)); |
7011e660 | 1619 | |
542f5482 DJB |
1620 | if (!tiocmget) |
1621 | return -ENOENT; | |
1622 | spin_lock_irq(&serial->serial_lock); | |
1623 | memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount)); | |
1624 | spin_unlock_irq(&serial->serial_lock); | |
1625 | ||
0bca1b91 AC |
1626 | icount->cts = cnow.cts; |
1627 | icount->dsr = cnow.dsr; | |
1628 | icount->rng = cnow.rng; | |
1629 | icount->dcd = cnow.dcd; | |
1630 | icount->rx = cnow.rx; | |
1631 | icount->tx = cnow.tx; | |
1632 | icount->frame = cnow.frame; | |
1633 | icount->overrun = cnow.overrun; | |
1634 | icount->parity = cnow.parity; | |
1635 | icount->brk = cnow.brk; | |
1636 | icount->buf_overrun = cnow.buf_overrun; | |
542f5482 | 1637 | |
0bca1b91 | 1638 | return 0; |
542f5482 DJB |
1639 | } |
1640 | ||
72dc1c09 | 1641 | |
60b33c13 | 1642 | static int hso_serial_tiocmget(struct tty_struct *tty) |
72dc1c09 | 1643 | { |
542f5482 | 1644 | int retval; |
30409420 | 1645 | struct hso_serial *serial = tty->driver_data; |
542f5482 DJB |
1646 | struct hso_tiocmget *tiocmget; |
1647 | u16 UART_state_bitmap; | |
72dc1c09 GKH |
1648 | |
1649 | /* sanity check */ | |
1650 | if (!serial) { | |
1651 | D1("no tty structures"); | |
1652 | return -EINVAL; | |
1653 | } | |
542f5482 DJB |
1654 | spin_lock_irq(&serial->serial_lock); |
1655 | retval = ((serial->rts_state) ? TIOCM_RTS : 0) | | |
72dc1c09 | 1656 | ((serial->dtr_state) ? TIOCM_DTR : 0); |
542f5482 DJB |
1657 | tiocmget = serial->tiocmget; |
1658 | if (tiocmget) { | |
1659 | ||
1660 | UART_state_bitmap = le16_to_cpu( | |
1661 | tiocmget->prev_UART_state_bitmap); | |
1662 | if (UART_state_bitmap & B_RING_SIGNAL) | |
1663 | retval |= TIOCM_RNG; | |
1664 | if (UART_state_bitmap & B_RX_CARRIER) | |
1665 | retval |= TIOCM_CD; | |
1666 | if (UART_state_bitmap & B_TX_CARRIER) | |
1667 | retval |= TIOCM_DSR; | |
1668 | } | |
1669 | spin_unlock_irq(&serial->serial_lock); | |
1670 | return retval; | |
72dc1c09 GKH |
1671 | } |
1672 | ||
20b9d177 | 1673 | static int hso_serial_tiocmset(struct tty_struct *tty, |
72dc1c09 GKH |
1674 | unsigned int set, unsigned int clear) |
1675 | { | |
1676 | int val = 0; | |
1677 | unsigned long flags; | |
1678 | int if_num; | |
30409420 | 1679 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1680 | |
1681 | /* sanity check */ | |
1682 | if (!serial) { | |
1683 | D1("no tty structures"); | |
1684 | return -EINVAL; | |
1685 | } | |
0e0367e9 JD |
1686 | |
1687 | if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM) | |
1688 | return -EINVAL; | |
1689 | ||
72dc1c09 GKH |
1690 | if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber; |
1691 | ||
1692 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1693 | if (set & TIOCM_RTS) | |
1694 | serial->rts_state = 1; | |
1695 | if (set & TIOCM_DTR) | |
1696 | serial->dtr_state = 1; | |
1697 | ||
1698 | if (clear & TIOCM_RTS) | |
1699 | serial->rts_state = 0; | |
1700 | if (clear & TIOCM_DTR) | |
1701 | serial->dtr_state = 0; | |
1702 | ||
1703 | if (serial->dtr_state) | |
1704 | val |= 0x01; | |
1705 | if (serial->rts_state) | |
1706 | val |= 0x02; | |
1707 | ||
1708 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1709 | ||
1710 | return usb_control_msg(serial->parent->usb, | |
1711 | usb_rcvctrlpipe(serial->parent->usb, 0), 0x22, | |
1712 | 0x21, val, if_num, NULL, 0, | |
1713 | USB_CTRL_SET_TIMEOUT); | |
1714 | } | |
1715 | ||
6caa76b7 | 1716 | static int hso_serial_ioctl(struct tty_struct *tty, |
542f5482 DJB |
1717 | unsigned int cmd, unsigned long arg) |
1718 | { | |
30409420 | 1719 | struct hso_serial *serial = tty->driver_data; |
542f5482 DJB |
1720 | int ret = 0; |
1721 | D4("IOCTL cmd: %d, arg: %ld", cmd, arg); | |
1722 | ||
1723 | if (!serial) | |
1724 | return -ENODEV; | |
1725 | switch (cmd) { | |
1726 | case TIOCMIWAIT: | |
1727 | ret = hso_wait_modem_status(serial, arg); | |
1728 | break; | |
542f5482 DJB |
1729 | default: |
1730 | ret = -ENOIOCTLCMD; | |
1731 | break; | |
1732 | } | |
1733 | return ret; | |
1734 | } | |
1735 | ||
1736 | ||
72dc1c09 GKH |
1737 | /* starts a transmit */ |
1738 | static void hso_kick_transmit(struct hso_serial *serial) | |
1739 | { | |
1740 | u8 *temp; | |
1741 | unsigned long flags; | |
1742 | int res; | |
1743 | ||
1744 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1745 | if (!serial->tx_buffer_count) | |
1746 | goto out; | |
1747 | ||
1748 | if (serial->tx_urb_used) | |
1749 | goto out; | |
1750 | ||
1751 | /* Wakeup USB interface if necessary */ | |
1752 | if (hso_get_activity(serial->parent) == -EAGAIN) | |
1753 | goto out; | |
1754 | ||
1755 | /* Switch pointers around to avoid memcpy */ | |
1756 | temp = serial->tx_buffer; | |
1757 | serial->tx_buffer = serial->tx_data; | |
1758 | serial->tx_data = temp; | |
1759 | serial->tx_data_count = serial->tx_buffer_count; | |
1760 | serial->tx_buffer_count = 0; | |
1761 | ||
1762 | /* If temp is set, it means we switched buffers */ | |
1763 | if (temp && serial->write_data) { | |
1764 | res = serial->write_data(serial); | |
1765 | if (res >= 0) | |
1766 | serial->tx_urb_used = 1; | |
1767 | } | |
1768 | out: | |
1769 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1770 | } | |
1771 | ||
1772 | /* make a request (for reading and writing data to muxed serial port) */ | |
1773 | static int mux_device_request(struct hso_serial *serial, u8 type, u16 port, | |
1774 | struct urb *ctrl_urb, | |
1775 | struct usb_ctrlrequest *ctrl_req, | |
1776 | u8 *ctrl_urb_data, u32 size) | |
1777 | { | |
1778 | int result; | |
1779 | int pipe; | |
1780 | ||
1781 | /* Sanity check */ | |
1782 | if (!serial || !ctrl_urb || !ctrl_req) { | |
1783 | printk(KERN_ERR "%s: Wrong arguments\n", __func__); | |
1784 | return -EINVAL; | |
1785 | } | |
1786 | ||
1787 | /* initialize */ | |
1788 | ctrl_req->wValue = 0; | |
b74f62c1 DJB |
1789 | ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port)); |
1790 | ctrl_req->wLength = cpu_to_le16(size); | |
72dc1c09 GKH |
1791 | |
1792 | if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) { | |
1793 | /* Reading command */ | |
1794 | ctrl_req->bRequestType = USB_DIR_IN | | |
1795 | USB_TYPE_OPTION_VENDOR | | |
1796 | USB_RECIP_INTERFACE; | |
1797 | ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE; | |
1798 | pipe = usb_rcvctrlpipe(serial->parent->usb, 0); | |
1799 | } else { | |
1800 | /* Writing command */ | |
1801 | ctrl_req->bRequestType = USB_DIR_OUT | | |
1802 | USB_TYPE_OPTION_VENDOR | | |
1803 | USB_RECIP_INTERFACE; | |
1804 | ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND; | |
1805 | pipe = usb_sndctrlpipe(serial->parent->usb, 0); | |
1806 | } | |
1807 | /* syslog */ | |
1808 | D2("%s command (%02x) len: %d, port: %d", | |
1809 | type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write", | |
1810 | ctrl_req->bRequestType, ctrl_req->wLength, port); | |
1811 | ||
1812 | /* Load ctrl urb */ | |
1813 | ctrl_urb->transfer_flags = 0; | |
1814 | usb_fill_control_urb(ctrl_urb, | |
1815 | serial->parent->usb, | |
1816 | pipe, | |
1817 | (u8 *) ctrl_req, | |
1818 | ctrl_urb_data, size, ctrl_callback, serial); | |
1819 | /* Send it on merry way */ | |
1820 | result = usb_submit_urb(ctrl_urb, GFP_ATOMIC); | |
1821 | if (result) { | |
1822 | dev_err(&ctrl_urb->dev->dev, | |
8a5c9c49 | 1823 | "%s failed submit ctrl_urb %d type %d\n", __func__, |
72dc1c09 GKH |
1824 | result, type); |
1825 | return result; | |
1826 | } | |
1827 | ||
1828 | /* done */ | |
1829 | return size; | |
1830 | } | |
1831 | ||
1832 | /* called by intr_callback when read occurs */ | |
1833 | static int hso_mux_serial_read(struct hso_serial *serial) | |
1834 | { | |
1835 | if (!serial) | |
1836 | return -EINVAL; | |
1837 | ||
1838 | /* clean data */ | |
1839 | memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE); | |
1840 | /* make the request */ | |
1841 | ||
1842 | if (serial->num_rx_urbs != 1) { | |
1843 | dev_err(&serial->parent->interface->dev, | |
1844 | "ERROR: mux'd reads with multiple buffers " | |
1845 | "not possible\n"); | |
1846 | return 0; | |
1847 | } | |
1848 | return mux_device_request(serial, | |
1849 | USB_CDC_GET_ENCAPSULATED_RESPONSE, | |
1850 | serial->parent->port_spec & HSO_PORT_MASK, | |
1851 | serial->rx_urb[0], | |
1852 | &serial->ctrl_req_rx, | |
1853 | serial->rx_data[0], serial->rx_data_length); | |
1854 | } | |
1855 | ||
1856 | /* used for muxed serial port callback (muxed serial read) */ | |
1857 | static void intr_callback(struct urb *urb) | |
1858 | { | |
1859 | struct hso_shared_int *shared_int = urb->context; | |
1860 | struct hso_serial *serial; | |
1861 | unsigned char *port_req; | |
1862 | int status = urb->status; | |
1863 | int i; | |
1864 | ||
1865 | usb_mark_last_busy(urb->dev); | |
1866 | ||
1867 | /* sanity check */ | |
1868 | if (!shared_int) | |
1869 | return; | |
1870 | ||
1871 | /* status check */ | |
1872 | if (status) { | |
68a351c5 | 1873 | handle_usb_error(status, __func__, NULL); |
72dc1c09 GKH |
1874 | return; |
1875 | } | |
1876 | D4("\n--- Got intr callback 0x%02X ---", status); | |
1877 | ||
1878 | /* what request? */ | |
1879 | port_req = urb->transfer_buffer; | |
1880 | D4(" port_req = 0x%.2X\n", *port_req); | |
1881 | /* loop over all muxed ports to find the one sending this */ | |
1882 | for (i = 0; i < 8; i++) { | |
1883 | /* max 8 channels on MUX */ | |
1884 | if (*port_req & (1 << i)) { | |
1885 | serial = get_serial_by_shared_int_and_type(shared_int, | |
1886 | (1 << i)); | |
1887 | if (serial != NULL) { | |
1888 | D1("Pending read interrupt on port %d\n", i); | |
8ef5ba63 | 1889 | spin_lock(&serial->serial_lock); |
f4763e96 | 1890 | if (serial->rx_state == RX_IDLE && |
5ce76e77 | 1891 | serial->port.count > 0) { |
72dc1c09 GKH |
1892 | /* Setup and send a ctrl req read on |
1893 | * port i */ | |
f4763e96 | 1894 | if (!serial->rx_urb_filled[0]) { |
8ef5ba63 DJB |
1895 | serial->rx_state = RX_SENT; |
1896 | hso_mux_serial_read(serial); | |
1897 | } else | |
1898 | serial->rx_state = RX_PENDING; | |
72dc1c09 | 1899 | } else { |
f4763e96 JD |
1900 | D1("Already a read pending on " |
1901 | "port %d or port not open\n", i); | |
72dc1c09 | 1902 | } |
8ef5ba63 | 1903 | spin_unlock(&serial->serial_lock); |
72dc1c09 GKH |
1904 | } |
1905 | } | |
1906 | } | |
1907 | /* Resubmit interrupt urb */ | |
1908 | hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC); | |
1909 | } | |
1910 | ||
1911 | /* called for writing to muxed serial port */ | |
1912 | static int hso_mux_serial_write_data(struct hso_serial *serial) | |
1913 | { | |
1914 | if (NULL == serial) | |
1915 | return -EINVAL; | |
1916 | ||
1917 | return mux_device_request(serial, | |
1918 | USB_CDC_SEND_ENCAPSULATED_COMMAND, | |
1919 | serial->parent->port_spec & HSO_PORT_MASK, | |
1920 | serial->tx_urb, | |
1921 | &serial->ctrl_req_tx, | |
1922 | serial->tx_data, serial->tx_data_count); | |
1923 | } | |
1924 | ||
1925 | /* write callback for Diag and CS port */ | |
1926 | static void hso_std_serial_write_bulk_callback(struct urb *urb) | |
1927 | { | |
1928 | struct hso_serial *serial = urb->context; | |
1929 | int status = urb->status; | |
e136e303 | 1930 | struct tty_struct *tty; |
72dc1c09 GKH |
1931 | |
1932 | /* sanity check */ | |
1933 | if (!serial) { | |
1934 | D1("serial == NULL"); | |
1935 | return; | |
1936 | } | |
1937 | ||
1938 | spin_lock(&serial->serial_lock); | |
1939 | serial->tx_urb_used = 0; | |
1940 | spin_unlock(&serial->serial_lock); | |
1941 | if (status) { | |
68a351c5 | 1942 | handle_usb_error(status, __func__, serial->parent); |
72dc1c09 GKH |
1943 | return; |
1944 | } | |
1945 | hso_put_activity(serial->parent); | |
9f8c0b08 | 1946 | tty = tty_port_tty_get(&serial->port); |
e136e303 AC |
1947 | if (tty) { |
1948 | tty_wakeup(tty); | |
1949 | tty_kref_put(tty); | |
1950 | } | |
72dc1c09 GKH |
1951 | hso_kick_transmit(serial); |
1952 | ||
1953 | D1(" "); | |
72dc1c09 GKH |
1954 | } |
1955 | ||
1956 | /* called for writing diag or CS serial port */ | |
1957 | static int hso_std_serial_write_data(struct hso_serial *serial) | |
1958 | { | |
1959 | int count = serial->tx_data_count; | |
1960 | int result; | |
1961 | ||
1962 | usb_fill_bulk_urb(serial->tx_urb, | |
1963 | serial->parent->usb, | |
1964 | usb_sndbulkpipe(serial->parent->usb, | |
1965 | serial->out_endp-> | |
1966 | bEndpointAddress & 0x7F), | |
1967 | serial->tx_data, serial->tx_data_count, | |
1968 | hso_std_serial_write_bulk_callback, serial); | |
1969 | ||
1970 | result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC); | |
1971 | if (result) { | |
1972 | dev_warn(&serial->parent->usb->dev, | |
1973 | "Failed to submit urb - res %d\n", result); | |
1974 | return result; | |
1975 | } | |
1976 | ||
1977 | return count; | |
1978 | } | |
1979 | ||
1980 | /* callback after read or write on muxed serial port */ | |
1981 | static void ctrl_callback(struct urb *urb) | |
1982 | { | |
1983 | struct hso_serial *serial = urb->context; | |
1984 | struct usb_ctrlrequest *req; | |
1985 | int status = urb->status; | |
1986 | ||
1987 | /* sanity check */ | |
1988 | if (!serial) | |
1989 | return; | |
1990 | ||
1991 | spin_lock(&serial->serial_lock); | |
1992 | serial->tx_urb_used = 0; | |
1993 | spin_unlock(&serial->serial_lock); | |
1994 | if (status) { | |
68a351c5 | 1995 | handle_usb_error(status, __func__, serial->parent); |
72dc1c09 GKH |
1996 | return; |
1997 | } | |
1998 | ||
1999 | /* what request? */ | |
2000 | req = (struct usb_ctrlrequest *)(urb->setup_packet); | |
2001 | D4("\n--- Got muxed ctrl callback 0x%02X ---", status); | |
2002 | D4("Actual length of urb = %d\n", urb->actual_length); | |
2003 | DUMP1(urb->transfer_buffer, urb->actual_length); | |
2004 | ||
2005 | if (req->bRequestType == | |
2006 | (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) { | |
2007 | /* response to a read command */ | |
8ef5ba63 DJB |
2008 | serial->rx_urb_filled[0] = 1; |
2009 | spin_lock(&serial->serial_lock); | |
2010 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); | |
2011 | spin_unlock(&serial->serial_lock); | |
72dc1c09 | 2012 | } else { |
9f8c0b08 | 2013 | struct tty_struct *tty = tty_port_tty_get(&serial->port); |
72dc1c09 | 2014 | hso_put_activity(serial->parent); |
9f8c0b08 | 2015 | if (tty) { |
e136e303 | 2016 | tty_wakeup(tty); |
9f8c0b08 JS |
2017 | tty_kref_put(tty); |
2018 | } | |
72dc1c09 GKH |
2019 | /* response to a write command */ |
2020 | hso_kick_transmit(serial); | |
2021 | } | |
2022 | } | |
2023 | ||
2024 | /* handle RX data for serial port */ | |
8ef5ba63 | 2025 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial) |
72dc1c09 | 2026 | { |
e136e303 | 2027 | struct tty_struct *tty; |
8ef5ba63 DJB |
2028 | int write_length_remaining = 0; |
2029 | int curr_write_len; | |
e136e303 | 2030 | |
72dc1c09 GKH |
2031 | /* Sanity check */ |
2032 | if (urb == NULL || serial == NULL) { | |
2033 | D1("serial = NULL"); | |
8ef5ba63 | 2034 | return -2; |
72dc1c09 GKH |
2035 | } |
2036 | ||
9f8c0b08 | 2037 | tty = tty_port_tty_get(&serial->port); |
e136e303 | 2038 | |
72dc1c09 | 2039 | /* Push data to tty */ |
8ef5ba63 DJB |
2040 | if (tty) { |
2041 | write_length_remaining = urb->actual_length - | |
2042 | serial->curr_rx_urb_offset; | |
72dc1c09 | 2043 | D1("data to push to tty"); |
8ef5ba63 | 2044 | while (write_length_remaining) { |
5839b414 DJB |
2045 | if (test_bit(TTY_THROTTLED, &tty->flags)) { |
2046 | tty_kref_put(tty); | |
8ef5ba63 | 2047 | return -1; |
5839b414 | 2048 | } |
8ef5ba63 DJB |
2049 | curr_write_len = tty_insert_flip_string |
2050 | (tty, urb->transfer_buffer + | |
2051 | serial->curr_rx_urb_offset, | |
2052 | write_length_remaining); | |
2053 | serial->curr_rx_urb_offset += curr_write_len; | |
2054 | write_length_remaining -= curr_write_len; | |
2055 | tty_flip_buffer_push(tty); | |
72dc1c09 | 2056 | } |
9f8c0b08 | 2057 | tty_kref_put(tty); |
72dc1c09 | 2058 | } |
8ef5ba63 DJB |
2059 | if (write_length_remaining == 0) { |
2060 | serial->curr_rx_urb_offset = 0; | |
2061 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; | |
72dc1c09 | 2062 | } |
8ef5ba63 | 2063 | return write_length_remaining; |
72dc1c09 GKH |
2064 | } |
2065 | ||
8ef5ba63 | 2066 | |
72dc1c09 GKH |
2067 | /* Base driver functions */ |
2068 | ||
2069 | static void hso_log_port(struct hso_device *hso_dev) | |
2070 | { | |
2071 | char *port_type; | |
2072 | char port_dev[20]; | |
2073 | ||
2074 | switch (hso_dev->port_spec & HSO_PORT_MASK) { | |
2075 | case HSO_PORT_CONTROL: | |
2076 | port_type = "Control"; | |
2077 | break; | |
2078 | case HSO_PORT_APP: | |
2079 | port_type = "Application"; | |
2080 | break; | |
2081 | case HSO_PORT_GPS: | |
2082 | port_type = "GPS"; | |
2083 | break; | |
2084 | case HSO_PORT_GPS_CONTROL: | |
2085 | port_type = "GPS control"; | |
2086 | break; | |
2087 | case HSO_PORT_APP2: | |
2088 | port_type = "Application2"; | |
2089 | break; | |
2090 | case HSO_PORT_PCSC: | |
2091 | port_type = "PCSC"; | |
2092 | break; | |
2093 | case HSO_PORT_DIAG: | |
2094 | port_type = "Diagnostic"; | |
2095 | break; | |
2096 | case HSO_PORT_DIAG2: | |
2097 | port_type = "Diagnostic2"; | |
2098 | break; | |
2099 | case HSO_PORT_MODEM: | |
2100 | port_type = "Modem"; | |
2101 | break; | |
2102 | case HSO_PORT_NETWORK: | |
2103 | port_type = "Network"; | |
2104 | break; | |
2105 | default: | |
2106 | port_type = "Unknown"; | |
2107 | break; | |
2108 | } | |
2109 | if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { | |
2110 | sprintf(port_dev, "%s", dev2net(hso_dev)->net->name); | |
2111 | } else | |
2112 | sprintf(port_dev, "/dev/%s%d", tty_filename, | |
2113 | dev2ser(hso_dev)->minor); | |
2114 | ||
2115 | dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n", | |
2116 | port_type, port_dev); | |
2117 | } | |
2118 | ||
2119 | static int hso_start_net_device(struct hso_device *hso_dev) | |
2120 | { | |
2121 | int i, result = 0; | |
2122 | struct hso_net *hso_net = dev2net(hso_dev); | |
2123 | ||
2124 | if (!hso_net) | |
2125 | return -ENODEV; | |
2126 | ||
2127 | /* send URBs for all read buffers */ | |
2128 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2129 | ||
2130 | /* Prep a receive URB */ | |
2131 | usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i], | |
2132 | hso_dev->usb, | |
2133 | usb_rcvbulkpipe(hso_dev->usb, | |
2134 | hso_net->in_endp-> | |
2135 | bEndpointAddress & 0x7F), | |
2136 | hso_net->mux_bulk_rx_buf_pool[i], | |
2137 | MUX_BULK_RX_BUF_SIZE, read_bulk_callback, | |
2138 | hso_net); | |
2139 | ||
2140 | /* Put it out there so the device can send us stuff */ | |
2141 | result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i], | |
2142 | GFP_NOIO); | |
2143 | if (result) | |
2144 | dev_warn(&hso_dev->usb->dev, | |
2145 | "%s failed mux_bulk_rx_urb[%d] %d\n", __func__, | |
2146 | i, result); | |
2147 | } | |
2148 | ||
2149 | return result; | |
2150 | } | |
2151 | ||
2152 | static int hso_stop_net_device(struct hso_device *hso_dev) | |
2153 | { | |
2154 | int i; | |
2155 | struct hso_net *hso_net = dev2net(hso_dev); | |
2156 | ||
2157 | if (!hso_net) | |
2158 | return -ENODEV; | |
2159 | ||
2160 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2161 | if (hso_net->mux_bulk_rx_urb_pool[i]) | |
2162 | usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]); | |
2163 | ||
2164 | } | |
2165 | if (hso_net->mux_bulk_tx_urb) | |
2166 | usb_kill_urb(hso_net->mux_bulk_tx_urb); | |
2167 | ||
2168 | return 0; | |
2169 | } | |
2170 | ||
2171 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags) | |
2172 | { | |
2173 | int i, result = 0; | |
2174 | struct hso_serial *serial = dev2ser(hso_dev); | |
2175 | ||
2176 | if (!serial) | |
2177 | return -ENODEV; | |
2178 | ||
2179 | /* If it is not the MUX port fill in and submit a bulk urb (already | |
2180 | * allocated in hso_serial_start) */ | |
2181 | if (!(serial->parent->port_spec & HSO_INTF_MUX)) { | |
2182 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2183 | usb_fill_bulk_urb(serial->rx_urb[i], | |
2184 | serial->parent->usb, | |
2185 | usb_rcvbulkpipe(serial->parent->usb, | |
2186 | serial->in_endp-> | |
2187 | bEndpointAddress & | |
2188 | 0x7F), | |
2189 | serial->rx_data[i], | |
2190 | serial->rx_data_length, | |
2191 | hso_std_serial_read_bulk_callback, | |
2192 | serial); | |
2193 | result = usb_submit_urb(serial->rx_urb[i], flags); | |
2194 | if (result) { | |
2195 | dev_warn(&serial->parent->usb->dev, | |
2196 | "Failed to submit urb - res %d\n", | |
2197 | result); | |
2198 | break; | |
2199 | } | |
2200 | } | |
2201 | } else { | |
2202 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2203 | if (!serial->shared_int->use_count) { | |
2204 | result = | |
2205 | hso_mux_submit_intr_urb(serial->shared_int, | |
2206 | hso_dev->usb, flags); | |
2207 | } | |
2208 | serial->shared_int->use_count++; | |
2209 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2210 | } | |
542f5482 DJB |
2211 | if (serial->tiocmget) |
2212 | tiocmget_submit_urb(serial, | |
2213 | serial->tiocmget, | |
2214 | serial->parent->usb); | |
72dc1c09 GKH |
2215 | return result; |
2216 | } | |
2217 | ||
2218 | static int hso_stop_serial_device(struct hso_device *hso_dev) | |
2219 | { | |
2220 | int i; | |
2221 | struct hso_serial *serial = dev2ser(hso_dev); | |
542f5482 | 2222 | struct hso_tiocmget *tiocmget; |
72dc1c09 GKH |
2223 | |
2224 | if (!serial) | |
2225 | return -ENODEV; | |
2226 | ||
2227 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
8ef5ba63 | 2228 | if (serial->rx_urb[i]) { |
72dc1c09 | 2229 | usb_kill_urb(serial->rx_urb[i]); |
8ef5ba63 DJB |
2230 | serial->rx_urb_filled[i] = 0; |
2231 | } | |
72dc1c09 | 2232 | } |
8ef5ba63 DJB |
2233 | serial->curr_rx_urb_idx = 0; |
2234 | serial->curr_rx_urb_offset = 0; | |
72dc1c09 GKH |
2235 | |
2236 | if (serial->tx_urb) | |
2237 | usb_kill_urb(serial->tx_urb); | |
2238 | ||
2239 | if (serial->shared_int) { | |
2240 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2241 | if (serial->shared_int->use_count && | |
2242 | (--serial->shared_int->use_count == 0)) { | |
2243 | struct urb *urb; | |
2244 | ||
2245 | urb = serial->shared_int->shared_intr_urb; | |
2246 | if (urb) | |
2247 | usb_kill_urb(urb); | |
2248 | } | |
2249 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2250 | } | |
542f5482 DJB |
2251 | tiocmget = serial->tiocmget; |
2252 | if (tiocmget) { | |
2253 | wake_up_interruptible(&tiocmget->waitq); | |
2254 | usb_kill_urb(tiocmget->urb); | |
2255 | } | |
72dc1c09 GKH |
2256 | |
2257 | return 0; | |
2258 | } | |
2259 | ||
2260 | static void hso_serial_common_free(struct hso_serial *serial) | |
2261 | { | |
2262 | int i; | |
2263 | ||
2264 | if (serial->parent->dev) | |
2265 | device_remove_file(serial->parent->dev, &dev_attr_hsotype); | |
2266 | ||
2267 | tty_unregister_device(tty_drv, serial->minor); | |
2268 | ||
2269 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2270 | /* unlink and free RX URB */ | |
2271 | usb_free_urb(serial->rx_urb[i]); | |
2272 | /* free the RX buffer */ | |
2273 | kfree(serial->rx_data[i]); | |
2274 | } | |
2275 | ||
2276 | /* unlink and free TX URB */ | |
2277 | usb_free_urb(serial->tx_urb); | |
2278 | kfree(serial->tx_data); | |
2279 | } | |
2280 | ||
2281 | static int hso_serial_common_create(struct hso_serial *serial, int num_urbs, | |
2282 | int rx_size, int tx_size) | |
2283 | { | |
2284 | struct device *dev; | |
2285 | int minor; | |
2286 | int i; | |
2287 | ||
2288 | minor = get_free_serial_index(); | |
2289 | if (minor < 0) | |
2290 | goto exit; | |
2291 | ||
2292 | /* register our minor number */ | |
2293 | serial->parent->dev = tty_register_device(tty_drv, minor, | |
2294 | &serial->parent->interface->dev); | |
2295 | dev = serial->parent->dev; | |
1aec5bdf | 2296 | dev_set_drvdata(dev, serial->parent); |
72dc1c09 GKH |
2297 | i = device_create_file(dev, &dev_attr_hsotype); |
2298 | ||
2299 | /* fill in specific data for later use */ | |
2300 | serial->minor = minor; | |
2301 | serial->magic = HSO_SERIAL_MAGIC; | |
2302 | spin_lock_init(&serial->serial_lock); | |
5ce76e77 | 2303 | tty_port_init(&serial->port); |
72dc1c09 GKH |
2304 | serial->num_rx_urbs = num_urbs; |
2305 | ||
2306 | /* RX, allocate urb and initialize */ | |
2307 | ||
2308 | /* prepare our RX buffer */ | |
2309 | serial->rx_data_length = rx_size; | |
2310 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2311 | serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL); | |
2312 | if (!serial->rx_urb[i]) { | |
2313 | dev_err(dev, "Could not allocate urb?\n"); | |
2314 | goto exit; | |
2315 | } | |
2316 | serial->rx_urb[i]->transfer_buffer = NULL; | |
2317 | serial->rx_urb[i]->transfer_buffer_length = 0; | |
2318 | serial->rx_data[i] = kzalloc(serial->rx_data_length, | |
2319 | GFP_KERNEL); | |
2320 | if (!serial->rx_data[i]) { | |
2321 | dev_err(dev, "%s - Out of memory\n", __func__); | |
2322 | goto exit; | |
2323 | } | |
2324 | } | |
2325 | ||
2326 | /* TX, allocate urb and initialize */ | |
2327 | serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2328 | if (!serial->tx_urb) { | |
2329 | dev_err(dev, "Could not allocate urb?\n"); | |
2330 | goto exit; | |
2331 | } | |
2332 | serial->tx_urb->transfer_buffer = NULL; | |
2333 | serial->tx_urb->transfer_buffer_length = 0; | |
2334 | /* prepare our TX buffer */ | |
2335 | serial->tx_data_count = 0; | |
2336 | serial->tx_buffer_count = 0; | |
2337 | serial->tx_data_length = tx_size; | |
2338 | serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL); | |
2339 | if (!serial->tx_data) { | |
8a5c9c49 | 2340 | dev_err(dev, "%s - Out of memory\n", __func__); |
72dc1c09 GKH |
2341 | goto exit; |
2342 | } | |
2343 | serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL); | |
2344 | if (!serial->tx_buffer) { | |
8a5c9c49 | 2345 | dev_err(dev, "%s - Out of memory\n", __func__); |
72dc1c09 GKH |
2346 | goto exit; |
2347 | } | |
2348 | ||
2349 | return 0; | |
2350 | exit: | |
2351 | hso_serial_common_free(serial); | |
2352 | return -1; | |
2353 | } | |
2354 | ||
72dc1c09 GKH |
2355 | /* Creates a general hso device */ |
2356 | static struct hso_device *hso_create_device(struct usb_interface *intf, | |
2357 | int port_spec) | |
2358 | { | |
2359 | struct hso_device *hso_dev; | |
2360 | ||
2361 | hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC); | |
2362 | if (!hso_dev) | |
2363 | return NULL; | |
2364 | ||
2365 | hso_dev->port_spec = port_spec; | |
2366 | hso_dev->usb = interface_to_usbdev(intf); | |
2367 | hso_dev->interface = intf; | |
2368 | kref_init(&hso_dev->ref); | |
ab153d84 DM |
2369 | mutex_init(&hso_dev->mutex); |
2370 | ||
72dc1c09 GKH |
2371 | INIT_WORK(&hso_dev->async_get_intf, async_get_intf); |
2372 | INIT_WORK(&hso_dev->async_put_intf, async_put_intf); | |
68a351c5 | 2373 | INIT_WORK(&hso_dev->reset_device, reset_device); |
72dc1c09 GKH |
2374 | |
2375 | return hso_dev; | |
2376 | } | |
2377 | ||
2378 | /* Removes a network device in the network device table */ | |
2379 | static int remove_net_device(struct hso_device *hso_dev) | |
2380 | { | |
2381 | int i; | |
2382 | ||
2383 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2384 | if (network_table[i] == hso_dev) { | |
2385 | network_table[i] = NULL; | |
2386 | break; | |
2387 | } | |
2388 | } | |
2389 | if (i == HSO_MAX_NET_DEVICES) | |
2390 | return -1; | |
2391 | return 0; | |
2392 | } | |
2393 | ||
2394 | /* Frees our network device */ | |
2395 | static void hso_free_net_device(struct hso_device *hso_dev) | |
2396 | { | |
2397 | int i; | |
2398 | struct hso_net *hso_net = dev2net(hso_dev); | |
2399 | ||
2400 | if (!hso_net) | |
2401 | return; | |
2402 | ||
3b7d2b31 JD |
2403 | remove_net_device(hso_net->parent); |
2404 | ||
5e2cd082 | 2405 | if (hso_net->net) |
3b7d2b31 | 2406 | unregister_netdev(hso_net->net); |
3b7d2b31 | 2407 | |
72dc1c09 GKH |
2408 | /* start freeing */ |
2409 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2410 | usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]); | |
2411 | kfree(hso_net->mux_bulk_rx_buf_pool[i]); | |
3b7d2b31 | 2412 | hso_net->mux_bulk_rx_buf_pool[i] = NULL; |
72dc1c09 GKH |
2413 | } |
2414 | usb_free_urb(hso_net->mux_bulk_tx_urb); | |
2415 | kfree(hso_net->mux_bulk_tx_buf); | |
3b7d2b31 | 2416 | hso_net->mux_bulk_tx_buf = NULL; |
ab153d84 | 2417 | |
5e2cd082 GKH |
2418 | if (hso_net->net) |
2419 | free_netdev(hso_net->net); | |
2420 | ||
e44578ea | 2421 | kfree(hso_dev); |
72dc1c09 GKH |
2422 | } |
2423 | ||
c266cb4e SH |
2424 | static const struct net_device_ops hso_netdev_ops = { |
2425 | .ndo_open = hso_net_open, | |
2426 | .ndo_stop = hso_net_close, | |
2427 | .ndo_start_xmit = hso_net_start_xmit, | |
2428 | .ndo_tx_timeout = hso_net_tx_timeout, | |
2429 | }; | |
2430 | ||
72dc1c09 GKH |
2431 | /* initialize the network interface */ |
2432 | static void hso_net_init(struct net_device *net) | |
2433 | { | |
2434 | struct hso_net *hso_net = netdev_priv(net); | |
2435 | ||
2436 | D1("sizeof hso_net is %d", (int)sizeof(*hso_net)); | |
2437 | ||
2438 | /* fill in the other fields */ | |
c266cb4e | 2439 | net->netdev_ops = &hso_netdev_ops; |
72dc1c09 GKH |
2440 | net->watchdog_timeo = HSO_NET_TX_TIMEOUT; |
2441 | net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST; | |
2442 | net->type = ARPHRD_NONE; | |
2443 | net->mtu = DEFAULT_MTU - 14; | |
2444 | net->tx_queue_len = 10; | |
2445 | SET_ETHTOOL_OPS(net, &ops); | |
2446 | ||
2447 | /* and initialize the semaphore */ | |
2448 | spin_lock_init(&hso_net->net_lock); | |
2449 | } | |
2450 | ||
2451 | /* Adds a network device in the network device table */ | |
2452 | static int add_net_device(struct hso_device *hso_dev) | |
2453 | { | |
2454 | int i; | |
2455 | ||
2456 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2457 | if (network_table[i] == NULL) { | |
2458 | network_table[i] = hso_dev; | |
2459 | break; | |
2460 | } | |
2461 | } | |
2462 | if (i == HSO_MAX_NET_DEVICES) | |
2463 | return -1; | |
2464 | return 0; | |
2465 | } | |
2466 | ||
19d337df | 2467 | static int hso_rfkill_set_block(void *data, bool blocked) |
72dc1c09 GKH |
2468 | { |
2469 | struct hso_device *hso_dev = data; | |
19d337df | 2470 | int enabled = !blocked; |
72dc1c09 GKH |
2471 | int rv; |
2472 | ||
ab153d84 | 2473 | mutex_lock(&hso_dev->mutex); |
72dc1c09 GKH |
2474 | if (hso_dev->usb_gone) |
2475 | rv = 0; | |
2476 | else | |
2477 | rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0), | |
2478 | enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0, | |
2479 | USB_CTRL_SET_TIMEOUT); | |
ab153d84 | 2480 | mutex_unlock(&hso_dev->mutex); |
72dc1c09 GKH |
2481 | return rv; |
2482 | } | |
2483 | ||
19d337df JB |
2484 | static const struct rfkill_ops hso_rfkill_ops = { |
2485 | .set_block = hso_rfkill_set_block, | |
2486 | }; | |
2487 | ||
72dc1c09 GKH |
2488 | /* Creates and sets up everything for rfkill */ |
2489 | static void hso_create_rfkill(struct hso_device *hso_dev, | |
2490 | struct usb_interface *interface) | |
2491 | { | |
2492 | struct hso_net *hso_net = dev2net(hso_dev); | |
939a9516 | 2493 | struct device *dev = &hso_net->net->dev; |
72dc1c09 GKH |
2494 | char *rfkn; |
2495 | ||
72dc1c09 | 2496 | rfkn = kzalloc(20, GFP_KERNEL); |
19d337df | 2497 | if (!rfkn) |
939a9516 | 2498 | dev_err(dev, "%s - Out of memory\n", __func__); |
19d337df | 2499 | |
72dc1c09 GKH |
2500 | snprintf(rfkn, 20, "hso-%d", |
2501 | interface->altsetting->desc.bInterfaceNumber); | |
19d337df JB |
2502 | |
2503 | hso_net->rfkill = rfkill_alloc(rfkn, | |
2504 | &interface_to_usbdev(interface)->dev, | |
2505 | RFKILL_TYPE_WWAN, | |
2506 | &hso_rfkill_ops, hso_dev); | |
2507 | if (!hso_net->rfkill) { | |
2508 | dev_err(dev, "%s - Out of memory\n", __func__); | |
2509 | kfree(rfkn); | |
2510 | return; | |
2511 | } | |
72dc1c09 | 2512 | if (rfkill_register(hso_net->rfkill) < 0) { |
19d337df | 2513 | rfkill_destroy(hso_net->rfkill); |
72dc1c09 | 2514 | kfree(rfkn); |
939a9516 JM |
2515 | hso_net->rfkill = NULL; |
2516 | dev_err(dev, "%s - Failed to register rfkill\n", __func__); | |
72dc1c09 GKH |
2517 | return; |
2518 | } | |
2519 | } | |
2520 | ||
384912ed MH |
2521 | static struct device_type hso_type = { |
2522 | .name = "wwan", | |
2523 | }; | |
2524 | ||
72dc1c09 | 2525 | /* Creates our network device */ |
0de8ca59 JD |
2526 | static struct hso_device *hso_create_net_device(struct usb_interface *interface, |
2527 | int port_spec) | |
72dc1c09 GKH |
2528 | { |
2529 | int result, i; | |
2530 | struct net_device *net; | |
2531 | struct hso_net *hso_net; | |
2532 | struct hso_device *hso_dev; | |
2533 | ||
0de8ca59 | 2534 | hso_dev = hso_create_device(interface, port_spec); |
72dc1c09 GKH |
2535 | if (!hso_dev) |
2536 | return NULL; | |
2537 | ||
2538 | /* allocate our network device, then we can put in our private data */ | |
2539 | /* call hso_net_init to do the basic initialization */ | |
2540 | net = alloc_netdev(sizeof(struct hso_net), "hso%d", hso_net_init); | |
2541 | if (!net) { | |
2542 | dev_err(&interface->dev, "Unable to create ethernet device\n"); | |
2543 | goto exit; | |
2544 | } | |
2545 | ||
2546 | hso_net = netdev_priv(net); | |
2547 | ||
2548 | hso_dev->port_data.dev_net = hso_net; | |
2549 | hso_net->net = net; | |
2550 | hso_net->parent = hso_dev; | |
2551 | ||
2552 | hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2553 | USB_DIR_IN); | |
2554 | if (!hso_net->in_endp) { | |
2555 | dev_err(&interface->dev, "Can't find BULK IN endpoint\n"); | |
2556 | goto exit; | |
2557 | } | |
2558 | hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2559 | USB_DIR_OUT); | |
2560 | if (!hso_net->out_endp) { | |
2561 | dev_err(&interface->dev, "Can't find BULK OUT endpoint\n"); | |
2562 | goto exit; | |
2563 | } | |
2564 | SET_NETDEV_DEV(net, &interface->dev); | |
384912ed | 2565 | SET_NETDEV_DEVTYPE(net, &hso_type); |
72dc1c09 GKH |
2566 | |
2567 | /* registering our net device */ | |
2568 | result = register_netdev(net); | |
2569 | if (result) { | |
2570 | dev_err(&interface->dev, "Failed to register device\n"); | |
2571 | goto exit; | |
2572 | } | |
2573 | ||
2574 | /* start allocating */ | |
2575 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2576 | hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL); | |
2577 | if (!hso_net->mux_bulk_rx_urb_pool[i]) { | |
2578 | dev_err(&interface->dev, "Could not allocate rx urb\n"); | |
2579 | goto exit; | |
2580 | } | |
2581 | hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE, | |
2582 | GFP_KERNEL); | |
2583 | if (!hso_net->mux_bulk_rx_buf_pool[i]) { | |
2584 | dev_err(&interface->dev, "Could not allocate rx buf\n"); | |
2585 | goto exit; | |
2586 | } | |
2587 | } | |
2588 | hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2589 | if (!hso_net->mux_bulk_tx_urb) { | |
2590 | dev_err(&interface->dev, "Could not allocate tx urb\n"); | |
2591 | goto exit; | |
2592 | } | |
2593 | hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL); | |
2594 | if (!hso_net->mux_bulk_tx_buf) { | |
2595 | dev_err(&interface->dev, "Could not allocate tx buf\n"); | |
2596 | goto exit; | |
2597 | } | |
2598 | ||
2599 | add_net_device(hso_dev); | |
2600 | ||
2601 | hso_log_port(hso_dev); | |
2602 | ||
2603 | hso_create_rfkill(hso_dev, interface); | |
2604 | ||
2605 | return hso_dev; | |
2606 | exit: | |
2607 | hso_free_net_device(hso_dev); | |
2608 | return NULL; | |
2609 | } | |
2610 | ||
542f5482 DJB |
2611 | static void hso_free_tiomget(struct hso_serial *serial) |
2612 | { | |
5b89db0e JJ |
2613 | struct hso_tiocmget *tiocmget; |
2614 | if (!serial) | |
2615 | return; | |
2616 | tiocmget = serial->tiocmget; | |
542f5482 | 2617 | if (tiocmget) { |
5b89db0e JJ |
2618 | usb_free_urb(tiocmget->urb); |
2619 | tiocmget->urb = NULL; | |
542f5482 | 2620 | serial->tiocmget = NULL; |
3b7d2b31 | 2621 | kfree(tiocmget); |
542f5482 DJB |
2622 | } |
2623 | } | |
2624 | ||
72dc1c09 GKH |
2625 | /* Frees an AT channel ( goes for both mux and non-mux ) */ |
2626 | static void hso_free_serial_device(struct hso_device *hso_dev) | |
2627 | { | |
2628 | struct hso_serial *serial = dev2ser(hso_dev); | |
2629 | ||
2630 | if (!serial) | |
2631 | return; | |
2632 | set_serial_by_index(serial->minor, NULL); | |
2633 | ||
2634 | hso_serial_common_free(serial); | |
2635 | ||
2636 | if (serial->shared_int) { | |
2637 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2638 | if (--serial->shared_int->ref_count == 0) | |
2639 | hso_free_shared_int(serial->shared_int); | |
2640 | else | |
2641 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2642 | } | |
542f5482 | 2643 | hso_free_tiomget(serial); |
72dc1c09 | 2644 | kfree(serial); |
e44578ea | 2645 | kfree(hso_dev); |
72dc1c09 GKH |
2646 | } |
2647 | ||
2648 | /* Creates a bulk AT channel */ | |
2649 | static struct hso_device *hso_create_bulk_serial_device( | |
2650 | struct usb_interface *interface, int port) | |
2651 | { | |
2652 | struct hso_device *hso_dev; | |
2653 | struct hso_serial *serial; | |
2654 | int num_urbs; | |
542f5482 | 2655 | struct hso_tiocmget *tiocmget; |
72dc1c09 GKH |
2656 | |
2657 | hso_dev = hso_create_device(interface, port); | |
2658 | if (!hso_dev) | |
2659 | return NULL; | |
2660 | ||
2661 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); | |
2662 | if (!serial) | |
2663 | goto exit; | |
2664 | ||
2665 | serial->parent = hso_dev; | |
2666 | hso_dev->port_data.dev_serial = serial; | |
2667 | ||
58eb17f1 | 2668 | if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) { |
72dc1c09 | 2669 | num_urbs = 2; |
542f5482 DJB |
2670 | serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget), |
2671 | GFP_KERNEL); | |
2672 | /* it isn't going to break our heart if serial->tiocmget | |
2673 | * allocation fails don't bother checking this. | |
2674 | */ | |
2675 | if (serial->tiocmget) { | |
2676 | tiocmget = serial->tiocmget; | |
2677 | tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL); | |
2678 | if (tiocmget->urb) { | |
2679 | mutex_init(&tiocmget->mutex); | |
2680 | init_waitqueue_head(&tiocmget->waitq); | |
2681 | tiocmget->endp = hso_get_ep( | |
2682 | interface, | |
2683 | USB_ENDPOINT_XFER_INT, | |
2684 | USB_DIR_IN); | |
2685 | } else | |
2686 | hso_free_tiomget(serial); | |
2687 | } | |
2688 | } | |
72dc1c09 GKH |
2689 | else |
2690 | num_urbs = 1; | |
2691 | ||
2692 | if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE, | |
2693 | BULK_URB_TX_SIZE)) | |
2694 | goto exit; | |
2695 | ||
2696 | serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2697 | USB_DIR_IN); | |
2698 | if (!serial->in_endp) { | |
2699 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); | |
e57b641d | 2700 | goto exit2; |
72dc1c09 GKH |
2701 | } |
2702 | ||
2703 | if (! | |
2704 | (serial->out_endp = | |
2705 | hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) { | |
2706 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); | |
e57b641d | 2707 | goto exit2; |
72dc1c09 GKH |
2708 | } |
2709 | ||
2710 | serial->write_data = hso_std_serial_write_data; | |
2711 | ||
2712 | /* and record this serial */ | |
2713 | set_serial_by_index(serial->minor, serial); | |
2714 | ||
2715 | /* setup the proc dirs and files if needed */ | |
2716 | hso_log_port(hso_dev); | |
2717 | ||
2718 | /* done, return it */ | |
2719 | return hso_dev; | |
e57b641d AB |
2720 | |
2721 | exit2: | |
2722 | hso_serial_common_free(serial); | |
72dc1c09 | 2723 | exit: |
542f5482 | 2724 | hso_free_tiomget(serial); |
72dc1c09 | 2725 | kfree(serial); |
e44578ea | 2726 | kfree(hso_dev); |
72dc1c09 GKH |
2727 | return NULL; |
2728 | } | |
2729 | ||
2730 | /* Creates a multiplexed AT channel */ | |
2731 | static | |
2732 | struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface, | |
2733 | int port, | |
2734 | struct hso_shared_int *mux) | |
2735 | { | |
2736 | struct hso_device *hso_dev; | |
2737 | struct hso_serial *serial; | |
2738 | int port_spec; | |
2739 | ||
2740 | port_spec = HSO_INTF_MUX; | |
2741 | port_spec &= ~HSO_PORT_MASK; | |
2742 | ||
2743 | port_spec |= hso_mux_to_port(port); | |
2744 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT) | |
2745 | return NULL; | |
2746 | ||
2747 | hso_dev = hso_create_device(interface, port_spec); | |
2748 | if (!hso_dev) | |
2749 | return NULL; | |
2750 | ||
2751 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); | |
2752 | if (!serial) | |
2753 | goto exit; | |
2754 | ||
2755 | hso_dev->port_data.dev_serial = serial; | |
2756 | serial->parent = hso_dev; | |
2757 | ||
2758 | if (hso_serial_common_create | |
2759 | (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE)) | |
2760 | goto exit; | |
2761 | ||
2762 | serial->tx_data_length--; | |
2763 | serial->write_data = hso_mux_serial_write_data; | |
2764 | ||
2765 | serial->shared_int = mux; | |
2766 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2767 | serial->shared_int->ref_count++; | |
2768 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2769 | ||
2770 | /* and record this serial */ | |
2771 | set_serial_by_index(serial->minor, serial); | |
2772 | ||
2773 | /* setup the proc dirs and files if needed */ | |
2774 | hso_log_port(hso_dev); | |
2775 | ||
2776 | /* done, return it */ | |
2777 | return hso_dev; | |
2778 | ||
2779 | exit: | |
2780 | if (serial) { | |
2781 | tty_unregister_device(tty_drv, serial->minor); | |
2782 | kfree(serial); | |
2783 | } | |
2784 | if (hso_dev) | |
e44578ea | 2785 | kfree(hso_dev); |
72dc1c09 GKH |
2786 | return NULL; |
2787 | ||
2788 | } | |
2789 | ||
2790 | static void hso_free_shared_int(struct hso_shared_int *mux) | |
2791 | { | |
2792 | usb_free_urb(mux->shared_intr_urb); | |
2793 | kfree(mux->shared_intr_buf); | |
2794 | mutex_unlock(&mux->shared_int_lock); | |
2795 | kfree(mux); | |
2796 | } | |
2797 | ||
2798 | static | |
2799 | struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface) | |
2800 | { | |
2801 | struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL); | |
2802 | ||
2803 | if (!mux) | |
2804 | return NULL; | |
2805 | ||
2806 | mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT, | |
2807 | USB_DIR_IN); | |
2808 | if (!mux->intr_endp) { | |
2809 | dev_err(&interface->dev, "Can't find INT IN endpoint\n"); | |
2810 | goto exit; | |
2811 | } | |
2812 | ||
2813 | mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2814 | if (!mux->shared_intr_urb) { | |
8a5c9c49 | 2815 | dev_err(&interface->dev, "Could not allocate intr urb?\n"); |
72dc1c09 GKH |
2816 | goto exit; |
2817 | } | |
d9ced80d JD |
2818 | mux->shared_intr_buf = |
2819 | kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize), | |
2820 | GFP_KERNEL); | |
72dc1c09 | 2821 | if (!mux->shared_intr_buf) { |
8a5c9c49 | 2822 | dev_err(&interface->dev, "Could not allocate intr buf?\n"); |
72dc1c09 GKH |
2823 | goto exit; |
2824 | } | |
2825 | ||
2826 | mutex_init(&mux->shared_int_lock); | |
2827 | ||
2828 | return mux; | |
2829 | ||
2830 | exit: | |
2831 | kfree(mux->shared_intr_buf); | |
2832 | usb_free_urb(mux->shared_intr_urb); | |
2833 | kfree(mux); | |
2834 | return NULL; | |
2835 | } | |
2836 | ||
2837 | /* Gets the port spec for a certain interface */ | |
2838 | static int hso_get_config_data(struct usb_interface *interface) | |
2839 | { | |
2840 | struct usb_device *usbdev = interface_to_usbdev(interface); | |
2841 | u8 config_data[17]; | |
2842 | u32 if_num = interface->altsetting->desc.bInterfaceNumber; | |
2843 | s32 result; | |
2844 | ||
2845 | if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), | |
2846 | 0x86, 0xC0, 0, 0, config_data, 17, | |
2847 | USB_CTRL_SET_TIMEOUT) != 0x11) { | |
2848 | return -EIO; | |
2849 | } | |
2850 | ||
2851 | switch (config_data[if_num]) { | |
2852 | case 0x0: | |
2853 | result = 0; | |
2854 | break; | |
2855 | case 0x1: | |
2856 | result = HSO_PORT_DIAG; | |
2857 | break; | |
2858 | case 0x2: | |
2859 | result = HSO_PORT_GPS; | |
2860 | break; | |
2861 | case 0x3: | |
2862 | result = HSO_PORT_GPS_CONTROL; | |
2863 | break; | |
2864 | case 0x4: | |
2865 | result = HSO_PORT_APP; | |
2866 | break; | |
2867 | case 0x5: | |
2868 | result = HSO_PORT_APP2; | |
2869 | break; | |
2870 | case 0x6: | |
2871 | result = HSO_PORT_CONTROL; | |
2872 | break; | |
2873 | case 0x7: | |
2874 | result = HSO_PORT_NETWORK; | |
2875 | break; | |
2876 | case 0x8: | |
2877 | result = HSO_PORT_MODEM; | |
2878 | break; | |
2879 | case 0x9: | |
2880 | result = HSO_PORT_MSD; | |
2881 | break; | |
2882 | case 0xa: | |
2883 | result = HSO_PORT_PCSC; | |
2884 | break; | |
2885 | case 0xb: | |
2886 | result = HSO_PORT_VOICE; | |
2887 | break; | |
2888 | default: | |
2889 | result = 0; | |
2890 | } | |
2891 | ||
2892 | if (result) | |
2893 | result |= HSO_INTF_BULK; | |
2894 | ||
2895 | if (config_data[16] & 0x1) | |
2896 | result |= HSO_INFO_CRC_BUG; | |
2897 | ||
2898 | return result; | |
2899 | } | |
2900 | ||
2901 | /* called once for each interface upon device insertion */ | |
2902 | static int hso_probe(struct usb_interface *interface, | |
2903 | const struct usb_device_id *id) | |
2904 | { | |
2905 | int mux, i, if_num, port_spec; | |
2906 | unsigned char port_mask; | |
2907 | struct hso_device *hso_dev = NULL; | |
2908 | struct hso_shared_int *shared_int; | |
2909 | struct hso_device *tmp_dev = NULL; | |
2910 | ||
2911 | if_num = interface->altsetting->desc.bInterfaceNumber; | |
2912 | ||
2913 | /* Get the interface/port specification from either driver_info or from | |
2914 | * the device itself */ | |
2915 | if (id->driver_info) | |
2916 | port_spec = ((u32 *)(id->driver_info))[if_num]; | |
2917 | else | |
2918 | port_spec = hso_get_config_data(interface); | |
2919 | ||
2920 | if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) { | |
2921 | dev_err(&interface->dev, "Not our interface\n"); | |
2922 | return -ENODEV; | |
2923 | } | |
2924 | /* Check if we need to switch to alt interfaces prior to port | |
2925 | * configuration */ | |
2926 | if (interface->num_altsetting > 1) | |
2927 | usb_set_interface(interface_to_usbdev(interface), if_num, 1); | |
2928 | interface->needs_remote_wakeup = 1; | |
2929 | ||
2930 | /* Allocate new hso device(s) */ | |
2931 | switch (port_spec & HSO_INTF_MASK) { | |
2932 | case HSO_INTF_MUX: | |
2933 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { | |
2934 | /* Create the network device */ | |
2935 | if (!disable_net) { | |
0de8ca59 JD |
2936 | hso_dev = hso_create_net_device(interface, |
2937 | port_spec); | |
72dc1c09 GKH |
2938 | if (!hso_dev) |
2939 | goto exit; | |
2940 | tmp_dev = hso_dev; | |
2941 | } | |
2942 | } | |
2943 | ||
2944 | if (hso_get_mux_ports(interface, &port_mask)) | |
2945 | /* TODO: de-allocate everything */ | |
2946 | goto exit; | |
2947 | ||
2948 | shared_int = hso_create_shared_int(interface); | |
2949 | if (!shared_int) | |
2950 | goto exit; | |
2951 | ||
2952 | for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) { | |
2953 | if (port_mask & i) { | |
2954 | hso_dev = hso_create_mux_serial_device( | |
2955 | interface, i, shared_int); | |
2956 | if (!hso_dev) | |
2957 | goto exit; | |
2958 | } | |
2959 | } | |
2960 | ||
2961 | if (tmp_dev) | |
2962 | hso_dev = tmp_dev; | |
2963 | break; | |
2964 | ||
2965 | case HSO_INTF_BULK: | |
2966 | /* It's a regular bulk interface */ | |
8e65c0ec FA |
2967 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { |
2968 | if (!disable_net) | |
2969 | hso_dev = | |
2970 | hso_create_net_device(interface, port_spec); | |
2971 | } else { | |
72dc1c09 GKH |
2972 | hso_dev = |
2973 | hso_create_bulk_serial_device(interface, port_spec); | |
8e65c0ec | 2974 | } |
72dc1c09 GKH |
2975 | if (!hso_dev) |
2976 | goto exit; | |
2977 | break; | |
2978 | default: | |
2979 | goto exit; | |
2980 | } | |
2981 | ||
72dc1c09 GKH |
2982 | /* save our data pointer in this device */ |
2983 | usb_set_intfdata(interface, hso_dev); | |
2984 | ||
2985 | /* done */ | |
2986 | return 0; | |
2987 | exit: | |
2988 | hso_free_interface(interface); | |
2989 | return -ENODEV; | |
2990 | } | |
2991 | ||
2992 | /* device removed, cleaning up */ | |
2993 | static void hso_disconnect(struct usb_interface *interface) | |
2994 | { | |
2995 | hso_free_interface(interface); | |
2996 | ||
2997 | /* remove reference of our private data */ | |
2998 | usb_set_intfdata(interface, NULL); | |
72dc1c09 GKH |
2999 | } |
3000 | ||
3001 | static void async_get_intf(struct work_struct *data) | |
3002 | { | |
3003 | struct hso_device *hso_dev = | |
3004 | container_of(data, struct hso_device, async_get_intf); | |
3005 | usb_autopm_get_interface(hso_dev->interface); | |
3006 | } | |
3007 | ||
3008 | static void async_put_intf(struct work_struct *data) | |
3009 | { | |
3010 | struct hso_device *hso_dev = | |
3011 | container_of(data, struct hso_device, async_put_intf); | |
3012 | usb_autopm_put_interface(hso_dev->interface); | |
3013 | } | |
3014 | ||
3015 | static int hso_get_activity(struct hso_device *hso_dev) | |
3016 | { | |
3017 | if (hso_dev->usb->state == USB_STATE_SUSPENDED) { | |
3018 | if (!hso_dev->is_active) { | |
3019 | hso_dev->is_active = 1; | |
3020 | schedule_work(&hso_dev->async_get_intf); | |
3021 | } | |
3022 | } | |
3023 | ||
3024 | if (hso_dev->usb->state != USB_STATE_CONFIGURED) | |
3025 | return -EAGAIN; | |
3026 | ||
3027 | usb_mark_last_busy(hso_dev->usb); | |
3028 | ||
3029 | return 0; | |
3030 | } | |
3031 | ||
3032 | static int hso_put_activity(struct hso_device *hso_dev) | |
3033 | { | |
3034 | if (hso_dev->usb->state != USB_STATE_SUSPENDED) { | |
3035 | if (hso_dev->is_active) { | |
3036 | hso_dev->is_active = 0; | |
3037 | schedule_work(&hso_dev->async_put_intf); | |
3038 | return -EAGAIN; | |
3039 | } | |
3040 | } | |
3041 | hso_dev->is_active = 0; | |
3042 | return 0; | |
3043 | } | |
3044 | ||
3045 | /* called by kernel when we need to suspend device */ | |
3046 | static int hso_suspend(struct usb_interface *iface, pm_message_t message) | |
3047 | { | |
3048 | int i, result; | |
3049 | ||
3050 | /* Stop all serial ports */ | |
3051 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
3052 | if (serial_table[i] && (serial_table[i]->interface == iface)) { | |
3053 | result = hso_stop_serial_device(serial_table[i]); | |
3054 | if (result) | |
3055 | goto out; | |
3056 | } | |
3057 | } | |
3058 | ||
3059 | /* Stop all network ports */ | |
3060 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
3061 | if (network_table[i] && | |
3062 | (network_table[i]->interface == iface)) { | |
3063 | result = hso_stop_net_device(network_table[i]); | |
3064 | if (result) | |
3065 | goto out; | |
3066 | } | |
3067 | } | |
3068 | ||
3069 | out: | |
3070 | return 0; | |
3071 | } | |
3072 | ||
3073 | /* called by kernel when we need to resume device */ | |
3074 | static int hso_resume(struct usb_interface *iface) | |
3075 | { | |
3076 | int i, result = 0; | |
3077 | struct hso_net *hso_net; | |
3078 | ||
3079 | /* Start all serial ports */ | |
3080 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
3081 | if (serial_table[i] && (serial_table[i]->interface == iface)) { | |
5ce76e77 | 3082 | if (dev2ser(serial_table[i])->port.count) { |
72dc1c09 GKH |
3083 | result = |
3084 | hso_start_serial_device(serial_table[i], GFP_NOIO); | |
3085 | hso_kick_transmit(dev2ser(serial_table[i])); | |
3086 | if (result) | |
3087 | goto out; | |
3088 | } | |
3089 | } | |
3090 | } | |
3091 | ||
3092 | /* Start all network ports */ | |
3093 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
3094 | if (network_table[i] && | |
3095 | (network_table[i]->interface == iface)) { | |
3096 | hso_net = dev2net(network_table[i]); | |
89930b7b DJB |
3097 | if (hso_net->flags & IFF_UP) { |
3098 | /* First transmit any lingering data, | |
3099 | then restart the device. */ | |
3100 | if (hso_net->skb_tx_buf) { | |
3101 | dev_dbg(&iface->dev, | |
3102 | "Transmitting" | |
3103 | " lingering data\n"); | |
3104 | hso_net_start_xmit(hso_net->skb_tx_buf, | |
3105 | hso_net->net); | |
3106 | hso_net->skb_tx_buf = NULL; | |
3107 | } | |
3108 | result = hso_start_net_device(network_table[i]); | |
3109 | if (result) | |
3110 | goto out; | |
72dc1c09 | 3111 | } |
72dc1c09 GKH |
3112 | } |
3113 | } | |
3114 | ||
3115 | out: | |
3116 | return result; | |
3117 | } | |
3118 | ||
68a351c5 JD |
3119 | static void reset_device(struct work_struct *data) |
3120 | { | |
3121 | struct hso_device *hso_dev = | |
3122 | container_of(data, struct hso_device, reset_device); | |
3123 | struct usb_device *usb = hso_dev->usb; | |
3124 | int result; | |
3125 | ||
3126 | if (hso_dev->usb_gone) { | |
3127 | D1("No reset during disconnect\n"); | |
3128 | } else { | |
3129 | result = usb_lock_device_for_reset(usb, hso_dev->interface); | |
3130 | if (result < 0) | |
3131 | D1("unable to lock device for reset: %d\n", result); | |
3132 | else { | |
3133 | usb_reset_device(usb); | |
3134 | usb_unlock_device(usb); | |
3135 | } | |
3136 | } | |
3137 | } | |
3138 | ||
72dc1c09 GKH |
3139 | static void hso_serial_ref_free(struct kref *ref) |
3140 | { | |
3141 | struct hso_device *hso_dev = container_of(ref, struct hso_device, ref); | |
3142 | ||
3143 | hso_free_serial_device(hso_dev); | |
3144 | } | |
3145 | ||
3146 | static void hso_free_interface(struct usb_interface *interface) | |
3147 | { | |
3148 | struct hso_serial *hso_dev; | |
e136e303 | 3149 | struct tty_struct *tty; |
72dc1c09 GKH |
3150 | int i; |
3151 | ||
3152 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
8e95a202 JP |
3153 | if (serial_table[i] && |
3154 | (serial_table[i]->interface == interface)) { | |
72dc1c09 | 3155 | hso_dev = dev2ser(serial_table[i]); |
9f8c0b08 JS |
3156 | tty = tty_port_tty_get(&hso_dev->port); |
3157 | if (tty) { | |
e136e303 | 3158 | tty_hangup(tty); |
9f8c0b08 JS |
3159 | tty_kref_put(tty); |
3160 | } | |
ab153d84 | 3161 | mutex_lock(&hso_dev->parent->mutex); |
72dc1c09 | 3162 | hso_dev->parent->usb_gone = 1; |
ab153d84 DM |
3163 | mutex_unlock(&hso_dev->parent->mutex); |
3164 | kref_put(&serial_table[i]->ref, hso_serial_ref_free); | |
72dc1c09 GKH |
3165 | } |
3166 | } | |
3167 | ||
3168 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
8e95a202 JP |
3169 | if (network_table[i] && |
3170 | (network_table[i]->interface == interface)) { | |
72dc1c09 GKH |
3171 | struct rfkill *rfk = dev2net(network_table[i])->rfkill; |
3172 | /* hso_stop_net_device doesn't stop the net queue since | |
3173 | * traffic needs to start it again when suspended */ | |
3174 | netif_stop_queue(dev2net(network_table[i])->net); | |
3175 | hso_stop_net_device(network_table[i]); | |
3176 | cancel_work_sync(&network_table[i]->async_put_intf); | |
3177 | cancel_work_sync(&network_table[i]->async_get_intf); | |
19d337df | 3178 | if (rfk) { |
72dc1c09 | 3179 | rfkill_unregister(rfk); |
19d337df JB |
3180 | rfkill_destroy(rfk); |
3181 | } | |
72dc1c09 GKH |
3182 | hso_free_net_device(network_table[i]); |
3183 | } | |
3184 | } | |
3185 | } | |
3186 | ||
3187 | /* Helper functions */ | |
3188 | ||
3189 | /* Get the endpoint ! */ | |
3190 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, | |
3191 | int type, int dir) | |
3192 | { | |
3193 | int i; | |
3194 | struct usb_host_interface *iface = intf->cur_altsetting; | |
3195 | struct usb_endpoint_descriptor *endp; | |
3196 | ||
3197 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { | |
3198 | endp = &iface->endpoint[i].desc; | |
3199 | if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) && | |
f201a8a4 | 3200 | (usb_endpoint_type(endp) == type)) |
72dc1c09 GKH |
3201 | return endp; |
3202 | } | |
3203 | ||
3204 | return NULL; | |
3205 | } | |
3206 | ||
3207 | /* Get the byte that describes which ports are enabled */ | |
3208 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports) | |
3209 | { | |
3210 | int i; | |
3211 | struct usb_host_interface *iface = intf->cur_altsetting; | |
3212 | ||
3213 | if (iface->extralen == 3) { | |
3214 | *ports = iface->extra[2]; | |
3215 | return 0; | |
3216 | } | |
3217 | ||
3218 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { | |
3219 | if (iface->endpoint[i].extralen == 3) { | |
3220 | *ports = iface->endpoint[i].extra[2]; | |
3221 | return 0; | |
3222 | } | |
3223 | } | |
3224 | ||
3225 | return -1; | |
3226 | } | |
3227 | ||
3228 | /* interrupt urb needs to be submitted, used for serial read of muxed port */ | |
3229 | static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int, | |
3230 | struct usb_device *usb, gfp_t gfp) | |
3231 | { | |
3232 | int result; | |
3233 | ||
3234 | usb_fill_int_urb(shared_int->shared_intr_urb, usb, | |
3235 | usb_rcvintpipe(usb, | |
3236 | shared_int->intr_endp->bEndpointAddress & 0x7F), | |
3237 | shared_int->shared_intr_buf, | |
d9ced80d | 3238 | 1, |
72dc1c09 GKH |
3239 | intr_callback, shared_int, |
3240 | shared_int->intr_endp->bInterval); | |
3241 | ||
3242 | result = usb_submit_urb(shared_int->shared_intr_urb, gfp); | |
3243 | if (result) | |
8a5c9c49 | 3244 | dev_warn(&usb->dev, "%s failed mux_intr_urb %d\n", __func__, |
72dc1c09 GKH |
3245 | result); |
3246 | ||
3247 | return result; | |
3248 | } | |
3249 | ||
3250 | /* operations setup of the serial interface */ | |
6c59f569 | 3251 | static const struct tty_operations hso_serial_ops = { |
72dc1c09 GKH |
3252 | .open = hso_serial_open, |
3253 | .close = hso_serial_close, | |
3254 | .write = hso_serial_write, | |
3255 | .write_room = hso_serial_write_room, | |
542f5482 | 3256 | .ioctl = hso_serial_ioctl, |
72dc1c09 GKH |
3257 | .set_termios = hso_serial_set_termios, |
3258 | .chars_in_buffer = hso_serial_chars_in_buffer, | |
3259 | .tiocmget = hso_serial_tiocmget, | |
3260 | .tiocmset = hso_serial_tiocmset, | |
0bca1b91 | 3261 | .get_icount = hso_get_count, |
8ef5ba63 | 3262 | .unthrottle = hso_unthrottle |
72dc1c09 GKH |
3263 | }; |
3264 | ||
3265 | static struct usb_driver hso_driver = { | |
3266 | .name = driver_name, | |
3267 | .probe = hso_probe, | |
3268 | .disconnect = hso_disconnect, | |
3269 | .id_table = hso_ids, | |
3270 | .suspend = hso_suspend, | |
3271 | .resume = hso_resume, | |
9c8f92ae | 3272 | .reset_resume = hso_resume, |
72dc1c09 | 3273 | .supports_autosuspend = 1, |
e1f12eb6 | 3274 | .disable_hub_initiated_lpm = 1, |
72dc1c09 GKH |
3275 | }; |
3276 | ||
3277 | static int __init hso_init(void) | |
3278 | { | |
3279 | int i; | |
3280 | int result; | |
3281 | ||
3282 | /* put it in the log */ | |
3283 | printk(KERN_INFO "hso: %s\n", version); | |
3284 | ||
3285 | /* Initialise the serial table semaphore and table */ | |
3286 | spin_lock_init(&serial_table_lock); | |
3287 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) | |
3288 | serial_table[i] = NULL; | |
3289 | ||
3290 | /* allocate our driver using the proper amount of supported minors */ | |
3291 | tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS); | |
3292 | if (!tty_drv) | |
3293 | return -ENOMEM; | |
3294 | ||
3295 | /* fill in all needed values */ | |
72dc1c09 GKH |
3296 | tty_drv->driver_name = driver_name; |
3297 | tty_drv->name = tty_filename; | |
3298 | ||
3299 | /* if major number is provided as parameter, use that one */ | |
3300 | if (tty_major) | |
3301 | tty_drv->major = tty_major; | |
3302 | ||
3303 | tty_drv->minor_start = 0; | |
72dc1c09 GKH |
3304 | tty_drv->type = TTY_DRIVER_TYPE_SERIAL; |
3305 | tty_drv->subtype = SERIAL_TYPE_NORMAL; | |
3306 | tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; | |
3307 | tty_drv->init_termios = tty_std_termios; | |
ac9720c3 | 3308 | hso_init_termios(&tty_drv->init_termios); |
72dc1c09 GKH |
3309 | tty_set_operations(tty_drv, &hso_serial_ops); |
3310 | ||
3311 | /* register the tty driver */ | |
3312 | result = tty_register_driver(tty_drv); | |
3313 | if (result) { | |
3314 | printk(KERN_ERR "%s - tty_register_driver failed(%d)\n", | |
3315 | __func__, result); | |
d230788f | 3316 | goto err_free_tty; |
72dc1c09 GKH |
3317 | } |
3318 | ||
3319 | /* register this module as an usb driver */ | |
3320 | result = usb_register(&hso_driver); | |
3321 | if (result) { | |
3322 | printk(KERN_ERR "Could not register hso driver? error: %d\n", | |
3323 | result); | |
d230788f | 3324 | goto err_unreg_tty; |
72dc1c09 GKH |
3325 | } |
3326 | ||
3327 | /* done */ | |
3328 | return 0; | |
d230788f JS |
3329 | err_unreg_tty: |
3330 | tty_unregister_driver(tty_drv); | |
3331 | err_free_tty: | |
3332 | put_tty_driver(tty_drv); | |
3333 | return result; | |
72dc1c09 GKH |
3334 | } |
3335 | ||
3336 | static void __exit hso_exit(void) | |
3337 | { | |
3338 | printk(KERN_INFO "hso: unloaded\n"); | |
3339 | ||
3340 | tty_unregister_driver(tty_drv); | |
d230788f | 3341 | put_tty_driver(tty_drv); |
72dc1c09 GKH |
3342 | /* deregister the usb driver */ |
3343 | usb_deregister(&hso_driver); | |
3344 | } | |
3345 | ||
3346 | /* Module definitions */ | |
3347 | module_init(hso_init); | |
3348 | module_exit(hso_exit); | |
3349 | ||
3350 | MODULE_AUTHOR(MOD_AUTHOR); | |
3351 | MODULE_DESCRIPTION(MOD_DESCRIPTION); | |
3352 | MODULE_LICENSE(MOD_LICENSE); | |
72dc1c09 GKH |
3353 | |
3354 | /* change the debug level (eg: insmod hso.ko debug=0x04) */ | |
3355 | MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]"); | |
3356 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
3357 | ||
3358 | /* set the major tty number (eg: insmod hso.ko tty_major=245) */ | |
3359 | MODULE_PARM_DESC(tty_major, "Set the major tty number"); | |
3360 | module_param(tty_major, int, S_IRUGO | S_IWUSR); | |
3361 | ||
3362 | /* disable network interface (eg: insmod hso.ko disable_net=1) */ | |
3363 | MODULE_PARM_DESC(disable_net, "Disable the network interface"); | |
3364 | module_param(disable_net, int, S_IRUGO | S_IWUSR); |