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> | |
72dc1c09 GKH |
61 | #include <linux/tty.h> |
62 | #include <linux/tty_driver.h> | |
63 | #include <linux/tty_flip.h> | |
64 | #include <linux/kmod.h> | |
65 | #include <linux/rfkill.h> | |
66 | #include <linux/ip.h> | |
67 | #include <linux/uaccess.h> | |
68 | #include <linux/usb/cdc.h> | |
69 | #include <net/arp.h> | |
70 | #include <asm/byteorder.h> | |
542f5482 DJB |
71 | #include <linux/serial_core.h> |
72 | #include <linux/serial.h> | |
72dc1c09 GKH |
73 | |
74 | ||
72dc1c09 GKH |
75 | #define MOD_AUTHOR "Option Wireless" |
76 | #define MOD_DESCRIPTION "USB High Speed Option driver" | |
77 | #define MOD_LICENSE "GPL" | |
78 | ||
79 | #define HSO_MAX_NET_DEVICES 10 | |
80 | #define HSO__MAX_MTU 2048 | |
81 | #define DEFAULT_MTU 1500 | |
82 | #define DEFAULT_MRU 1500 | |
83 | ||
84 | #define CTRL_URB_RX_SIZE 1024 | |
85 | #define CTRL_URB_TX_SIZE 64 | |
86 | ||
87 | #define BULK_URB_RX_SIZE 4096 | |
88 | #define BULK_URB_TX_SIZE 8192 | |
89 | ||
90 | #define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU | |
91 | #define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU | |
92 | #define MUX_BULK_RX_BUF_COUNT 4 | |
93 | #define USB_TYPE_OPTION_VENDOR 0x20 | |
94 | ||
95 | /* These definitions are used with the struct hso_net flags element */ | |
96 | /* - use *_bit operations on it. (bit indices not values.) */ | |
97 | #define HSO_NET_RUNNING 0 | |
98 | ||
99 | #define HSO_NET_TX_TIMEOUT (HZ*10) | |
100 | ||
72dc1c09 GKH |
101 | #define HSO_SERIAL_MAGIC 0x48534f31 |
102 | ||
103 | /* Number of ttys to handle */ | |
104 | #define HSO_SERIAL_TTY_MINORS 256 | |
105 | ||
106 | #define MAX_RX_URBS 2 | |
107 | ||
72dc1c09 GKH |
108 | /*****************************************************************************/ |
109 | /* Debugging functions */ | |
110 | /*****************************************************************************/ | |
111 | #define D__(lvl_, fmt, arg...) \ | |
112 | do { \ | |
113 | printk(lvl_ "[%d:%s]: " fmt "\n", \ | |
114 | __LINE__, __func__, ## arg); \ | |
115 | } while (0) | |
116 | ||
117 | #define D_(lvl, args...) \ | |
118 | do { \ | |
119 | if (lvl & debug) \ | |
120 | D__(KERN_INFO, args); \ | |
121 | } while (0) | |
122 | ||
123 | #define D1(args...) D_(0x01, ##args) | |
124 | #define D2(args...) D_(0x02, ##args) | |
125 | #define D3(args...) D_(0x04, ##args) | |
126 | #define D4(args...) D_(0x08, ##args) | |
127 | #define D5(args...) D_(0x10, ##args) | |
128 | ||
129 | /*****************************************************************************/ | |
130 | /* Enumerators */ | |
131 | /*****************************************************************************/ | |
132 | enum pkt_parse_state { | |
133 | WAIT_IP, | |
134 | WAIT_DATA, | |
135 | WAIT_SYNC | |
136 | }; | |
137 | ||
138 | /*****************************************************************************/ | |
139 | /* Structs */ | |
140 | /*****************************************************************************/ | |
141 | ||
142 | struct hso_shared_int { | |
143 | struct usb_endpoint_descriptor *intr_endp; | |
144 | void *shared_intr_buf; | |
145 | struct urb *shared_intr_urb; | |
146 | struct usb_device *usb; | |
147 | int use_count; | |
148 | int ref_count; | |
149 | struct mutex shared_int_lock; | |
150 | }; | |
151 | ||
152 | struct hso_net { | |
153 | struct hso_device *parent; | |
154 | struct net_device *net; | |
155 | struct rfkill *rfkill; | |
38121067 | 156 | char name[24]; |
72dc1c09 GKH |
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) | |
542f5482 DJB |
188 | #define W_LENGTH (0x2) |
189 | ||
190 | #define B_OVERRUN (0x1<<6) | |
191 | #define B_PARITY (0x1<<5) | |
192 | #define B_FRAMING (0x1<<4) | |
193 | #define B_RING_SIGNAL (0x1<<3) | |
194 | #define B_BREAK (0x1<<2) | |
195 | #define B_TX_CARRIER (0x1<<1) | |
196 | #define B_RX_CARRIER (0x1<<0) | |
197 | ||
198 | struct hso_serial_state_notification { | |
199 | u8 bmRequestType; | |
200 | u8 bNotification; | |
201 | u16 wValue; | |
202 | u16 wIndex; | |
203 | u16 wLength; | |
204 | u16 UART_state_bitmap; | |
ba2d3587 | 205 | } __packed; |
542f5482 DJB |
206 | |
207 | struct hso_tiocmget { | |
208 | struct mutex mutex; | |
209 | wait_queue_head_t waitq; | |
210 | int intr_completed; | |
211 | struct usb_endpoint_descriptor *endp; | |
212 | struct urb *urb; | |
213 | struct hso_serial_state_notification serial_state_notification; | |
214 | u16 prev_UART_state_bitmap; | |
215 | struct uart_icount icount; | |
216 | }; | |
217 | ||
218 | ||
72dc1c09 GKH |
219 | struct hso_serial { |
220 | struct hso_device *parent; | |
221 | int magic; | |
222 | u8 minor; | |
223 | ||
224 | struct hso_shared_int *shared_int; | |
225 | ||
226 | /* rx/tx urb could be either a bulk urb or a control urb depending | |
227 | on which serial port it is used on. */ | |
228 | struct urb *rx_urb[MAX_RX_URBS]; | |
229 | u8 num_rx_urbs; | |
230 | u8 *rx_data[MAX_RX_URBS]; | |
231 | u16 rx_data_length; /* should contain allocated length */ | |
232 | ||
233 | struct urb *tx_urb; | |
234 | u8 *tx_data; | |
235 | u8 *tx_buffer; | |
236 | u16 tx_data_length; /* should contain allocated length */ | |
237 | u16 tx_data_count; | |
238 | u16 tx_buffer_count; | |
239 | struct usb_ctrlrequest ctrl_req_tx; | |
240 | struct usb_ctrlrequest ctrl_req_rx; | |
241 | ||
242 | struct usb_endpoint_descriptor *in_endp; | |
243 | struct usb_endpoint_descriptor *out_endp; | |
244 | ||
8ef5ba63 | 245 | enum rx_ctrl_state rx_state; |
72dc1c09 GKH |
246 | u8 rts_state; |
247 | u8 dtr_state; | |
248 | unsigned tx_urb_used:1; | |
249 | ||
5ce76e77 | 250 | struct tty_port port; |
72dc1c09 | 251 | /* from usb_serial_port */ |
72dc1c09 GKH |
252 | spinlock_t serial_lock; |
253 | ||
254 | int (*write_data) (struct hso_serial *serial); | |
542f5482 | 255 | struct hso_tiocmget *tiocmget; |
8ef5ba63 DJB |
256 | /* Hacks required to get flow control |
257 | * working on the serial receive buffers | |
258 | * so as not to drop characters on the floor. | |
259 | */ | |
260 | int curr_rx_urb_idx; | |
8ef5ba63 DJB |
261 | u8 rx_urb_filled[MAX_RX_URBS]; |
262 | struct tasklet_struct unthrottle_tasklet; | |
72dc1c09 GKH |
263 | }; |
264 | ||
265 | struct hso_device { | |
266 | union { | |
267 | struct hso_serial *dev_serial; | |
268 | struct hso_net *dev_net; | |
269 | } port_data; | |
270 | ||
271 | u32 port_spec; | |
272 | ||
273 | u8 is_active; | |
274 | u8 usb_gone; | |
275 | struct work_struct async_get_intf; | |
276 | struct work_struct async_put_intf; | |
277 | ||
278 | struct usb_device *usb; | |
279 | struct usb_interface *interface; | |
280 | ||
281 | struct device *dev; | |
282 | struct kref ref; | |
ab153d84 | 283 | struct mutex mutex; |
72dc1c09 GKH |
284 | }; |
285 | ||
286 | /* Type of interface */ | |
287 | #define HSO_INTF_MASK 0xFF00 | |
288 | #define HSO_INTF_MUX 0x0100 | |
289 | #define HSO_INTF_BULK 0x0200 | |
290 | ||
291 | /* Type of port */ | |
292 | #define HSO_PORT_MASK 0xFF | |
293 | #define HSO_PORT_NO_PORT 0x0 | |
294 | #define HSO_PORT_CONTROL 0x1 | |
295 | #define HSO_PORT_APP 0x2 | |
296 | #define HSO_PORT_GPS 0x3 | |
297 | #define HSO_PORT_PCSC 0x4 | |
298 | #define HSO_PORT_APP2 0x5 | |
299 | #define HSO_PORT_GPS_CONTROL 0x6 | |
300 | #define HSO_PORT_MSD 0x7 | |
301 | #define HSO_PORT_VOICE 0x8 | |
302 | #define HSO_PORT_DIAG2 0x9 | |
303 | #define HSO_PORT_DIAG 0x10 | |
304 | #define HSO_PORT_MODEM 0x11 | |
305 | #define HSO_PORT_NETWORK 0x12 | |
306 | ||
307 | /* Additional device info */ | |
308 | #define HSO_INFO_MASK 0xFF000000 | |
309 | #define HSO_INFO_CRC_BUG 0x01000000 | |
310 | ||
311 | /*****************************************************************************/ | |
312 | /* Prototypes */ | |
313 | /*****************************************************************************/ | |
314 | /* Serial driver functions */ | |
20b9d177 | 315 | static int hso_serial_tiocmset(struct tty_struct *tty, |
72dc1c09 GKH |
316 | unsigned int set, unsigned int clear); |
317 | static void ctrl_callback(struct urb *urb); | |
8ef5ba63 | 318 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial); |
72dc1c09 GKH |
319 | static void hso_kick_transmit(struct hso_serial *serial); |
320 | /* Helper functions */ | |
321 | static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int, | |
322 | struct usb_device *usb, gfp_t gfp); | |
68a351c5 JD |
323 | static void handle_usb_error(int status, const char *function, |
324 | struct hso_device *hso_dev); | |
72dc1c09 GKH |
325 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, |
326 | int type, int dir); | |
327 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports); | |
328 | static void hso_free_interface(struct usb_interface *intf); | |
329 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags); | |
330 | static int hso_stop_serial_device(struct hso_device *hso_dev); | |
331 | static int hso_start_net_device(struct hso_device *hso_dev); | |
332 | static void hso_free_shared_int(struct hso_shared_int *shared_int); | |
333 | static int hso_stop_net_device(struct hso_device *hso_dev); | |
334 | static void hso_serial_ref_free(struct kref *ref); | |
8ef5ba63 DJB |
335 | static void hso_std_serial_read_bulk_callback(struct urb *urb); |
336 | static int hso_mux_serial_read(struct hso_serial *serial); | |
72dc1c09 GKH |
337 | static void async_get_intf(struct work_struct *data); |
338 | static void async_put_intf(struct work_struct *data); | |
339 | static int hso_put_activity(struct hso_device *hso_dev); | |
340 | static int hso_get_activity(struct hso_device *hso_dev); | |
542f5482 | 341 | static void tiocmget_intr_callback(struct urb *urb); |
72dc1c09 GKH |
342 | /*****************************************************************************/ |
343 | /* Helping functions */ | |
344 | /*****************************************************************************/ | |
345 | ||
346 | /* #define DEBUG */ | |
347 | ||
0235f641 GKH |
348 | static inline struct hso_net *dev2net(struct hso_device *hso_dev) |
349 | { | |
350 | return hso_dev->port_data.dev_net; | |
351 | } | |
352 | ||
353 | static inline struct hso_serial *dev2ser(struct hso_device *hso_dev) | |
354 | { | |
355 | return hso_dev->port_data.dev_serial; | |
356 | } | |
72dc1c09 GKH |
357 | |
358 | /* Debugging functions */ | |
359 | #ifdef DEBUG | |
360 | static void dbg_dump(int line_count, const char *func_name, unsigned char *buf, | |
361 | unsigned int len) | |
362 | { | |
0235f641 | 363 | static char name[255]; |
72dc1c09 | 364 | |
0235f641 GKH |
365 | sprintf(name, "hso[%d:%s]", line_count, func_name); |
366 | print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len); | |
72dc1c09 GKH |
367 | } |
368 | ||
369 | #define DUMP(buf_, len_) \ | |
9ce673d5 | 370 | dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_) |
72dc1c09 GKH |
371 | |
372 | #define DUMP1(buf_, len_) \ | |
373 | do { \ | |
374 | if (0x01 & debug) \ | |
375 | DUMP(buf_, len_); \ | |
376 | } while (0) | |
377 | #else | |
378 | #define DUMP(buf_, len_) | |
379 | #define DUMP1(buf_, len_) | |
380 | #endif | |
381 | ||
382 | /* module parameters */ | |
383 | static int debug; | |
384 | static int tty_major; | |
385 | static int disable_net; | |
386 | ||
387 | /* driver info */ | |
388 | static const char driver_name[] = "hso"; | |
389 | static const char tty_filename[] = "ttyHS"; | |
242647bc | 390 | static const char *version = __FILE__ ": " MOD_AUTHOR; |
72dc1c09 GKH |
391 | /* the usb driver itself (registered in hso_init) */ |
392 | static struct usb_driver hso_driver; | |
393 | /* serial structures */ | |
394 | static struct tty_driver *tty_drv; | |
395 | static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS]; | |
396 | static struct hso_device *network_table[HSO_MAX_NET_DEVICES]; | |
397 | static spinlock_t serial_table_lock; | |
72dc1c09 GKH |
398 | |
399 | static const s32 default_port_spec[] = { | |
400 | HSO_INTF_MUX | HSO_PORT_NETWORK, | |
401 | HSO_INTF_BULK | HSO_PORT_DIAG, | |
402 | HSO_INTF_BULK | HSO_PORT_MODEM, | |
403 | 0 | |
404 | }; | |
405 | ||
406 | static const s32 icon321_port_spec[] = { | |
407 | HSO_INTF_MUX | HSO_PORT_NETWORK, | |
408 | HSO_INTF_BULK | HSO_PORT_DIAG2, | |
409 | HSO_INTF_BULK | HSO_PORT_MODEM, | |
410 | HSO_INTF_BULK | HSO_PORT_DIAG, | |
411 | 0 | |
412 | }; | |
413 | ||
414 | #define default_port_device(vendor, product) \ | |
415 | USB_DEVICE(vendor, product), \ | |
416 | .driver_info = (kernel_ulong_t)default_port_spec | |
417 | ||
418 | #define icon321_port_device(vendor, product) \ | |
419 | USB_DEVICE(vendor, product), \ | |
420 | .driver_info = (kernel_ulong_t)icon321_port_spec | |
421 | ||
422 | /* list of devices we support */ | |
423 | static const struct usb_device_id hso_ids[] = { | |
424 | {default_port_device(0x0af0, 0x6711)}, | |
425 | {default_port_device(0x0af0, 0x6731)}, | |
426 | {default_port_device(0x0af0, 0x6751)}, | |
427 | {default_port_device(0x0af0, 0x6771)}, | |
428 | {default_port_device(0x0af0, 0x6791)}, | |
429 | {default_port_device(0x0af0, 0x6811)}, | |
430 | {default_port_device(0x0af0, 0x6911)}, | |
431 | {default_port_device(0x0af0, 0x6951)}, | |
432 | {default_port_device(0x0af0, 0x6971)}, | |
433 | {default_port_device(0x0af0, 0x7011)}, | |
434 | {default_port_device(0x0af0, 0x7031)}, | |
435 | {default_port_device(0x0af0, 0x7051)}, | |
436 | {default_port_device(0x0af0, 0x7071)}, | |
437 | {default_port_device(0x0af0, 0x7111)}, | |
438 | {default_port_device(0x0af0, 0x7211)}, | |
439 | {default_port_device(0x0af0, 0x7251)}, | |
440 | {default_port_device(0x0af0, 0x7271)}, | |
441 | {default_port_device(0x0af0, 0x7311)}, | |
442 | {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */ | |
443 | {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */ | |
444 | {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */ | |
95eacee8 | 445 | {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */ |
72dc1c09 GKH |
446 | {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */ |
447 | {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */ | |
67dd8246 | 448 | {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */ |
72dc1c09 GKH |
449 | {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */ |
450 | {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */ | |
451 | {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */ | |
bab04c3a | 452 | {USB_DEVICE(0x0af0, 0x7701)}, |
ec157937 | 453 | {USB_DEVICE(0x0af0, 0x7706)}, |
bab04c3a DJB |
454 | {USB_DEVICE(0x0af0, 0x7801)}, |
455 | {USB_DEVICE(0x0af0, 0x7901)}, | |
ec157937 JD |
456 | {USB_DEVICE(0x0af0, 0x7A01)}, |
457 | {USB_DEVICE(0x0af0, 0x7A05)}, | |
9961d842 JD |
458 | {USB_DEVICE(0x0af0, 0x8200)}, |
459 | {USB_DEVICE(0x0af0, 0x8201)}, | |
ec157937 JD |
460 | {USB_DEVICE(0x0af0, 0x8300)}, |
461 | {USB_DEVICE(0x0af0, 0x8302)}, | |
462 | {USB_DEVICE(0x0af0, 0x8304)}, | |
463 | {USB_DEVICE(0x0af0, 0x8400)}, | |
dd7496f2 FA |
464 | {USB_DEVICE(0x0af0, 0x8600)}, |
465 | {USB_DEVICE(0x0af0, 0x8800)}, | |
466 | {USB_DEVICE(0x0af0, 0x8900)}, | |
5c7bf2f4 | 467 | {USB_DEVICE(0x0af0, 0x9000)}, |
61ab9efd | 468 | {USB_DEVICE(0x0af0, 0x9200)}, /* Option GTM671WFS */ |
9961d842 | 469 | {USB_DEVICE(0x0af0, 0xd035)}, |
67dd8246 | 470 | {USB_DEVICE(0x0af0, 0xd055)}, |
9961d842 JD |
471 | {USB_DEVICE(0x0af0, 0xd155)}, |
472 | {USB_DEVICE(0x0af0, 0xd255)}, | |
473 | {USB_DEVICE(0x0af0, 0xd057)}, | |
474 | {USB_DEVICE(0x0af0, 0xd157)}, | |
475 | {USB_DEVICE(0x0af0, 0xd257)}, | |
476 | {USB_DEVICE(0x0af0, 0xd357)}, | |
ec157937 JD |
477 | {USB_DEVICE(0x0af0, 0xd058)}, |
478 | {USB_DEVICE(0x0af0, 0xc100)}, | |
72dc1c09 GKH |
479 | {} |
480 | }; | |
481 | MODULE_DEVICE_TABLE(usb, hso_ids); | |
482 | ||
483 | /* Sysfs attribute */ | |
484 | static ssize_t hso_sysfs_show_porttype(struct device *dev, | |
485 | struct device_attribute *attr, | |
486 | char *buf) | |
487 | { | |
1aec5bdf | 488 | struct hso_device *hso_dev = dev_get_drvdata(dev); |
72dc1c09 GKH |
489 | char *port_name; |
490 | ||
491 | if (!hso_dev) | |
492 | return 0; | |
493 | ||
494 | switch (hso_dev->port_spec & HSO_PORT_MASK) { | |
495 | case HSO_PORT_CONTROL: | |
496 | port_name = "Control"; | |
497 | break; | |
498 | case HSO_PORT_APP: | |
499 | port_name = "Application"; | |
500 | break; | |
501 | case HSO_PORT_APP2: | |
502 | port_name = "Application2"; | |
503 | break; | |
504 | case HSO_PORT_GPS: | |
505 | port_name = "GPS"; | |
506 | break; | |
507 | case HSO_PORT_GPS_CONTROL: | |
508 | port_name = "GPS Control"; | |
509 | break; | |
510 | case HSO_PORT_PCSC: | |
511 | port_name = "PCSC"; | |
512 | break; | |
513 | case HSO_PORT_DIAG: | |
514 | port_name = "Diagnostic"; | |
515 | break; | |
516 | case HSO_PORT_DIAG2: | |
517 | port_name = "Diagnostic2"; | |
518 | break; | |
519 | case HSO_PORT_MODEM: | |
520 | port_name = "Modem"; | |
521 | break; | |
522 | case HSO_PORT_NETWORK: | |
523 | port_name = "Network"; | |
524 | break; | |
525 | default: | |
526 | port_name = "Unknown"; | |
527 | break; | |
528 | } | |
529 | ||
530 | return sprintf(buf, "%s\n", port_name); | |
531 | } | |
532 | static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL); | |
533 | ||
4134069f TI |
534 | static struct attribute *hso_serial_dev_attrs[] = { |
535 | &dev_attr_hsotype.attr, | |
536 | NULL | |
537 | }; | |
538 | ||
539 | ATTRIBUTE_GROUPS(hso_serial_dev); | |
540 | ||
8ef5ba63 DJB |
541 | static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb) |
542 | { | |
543 | int idx; | |
544 | ||
545 | for (idx = 0; idx < serial->num_rx_urbs; idx++) | |
546 | if (serial->rx_urb[idx] == urb) | |
547 | return idx; | |
548 | dev_err(serial->parent->dev, "hso_urb_to_index failed\n"); | |
549 | return -1; | |
550 | } | |
551 | ||
72dc1c09 GKH |
552 | /* converts mux value to a port spec value */ |
553 | static u32 hso_mux_to_port(int mux) | |
554 | { | |
555 | u32 result; | |
556 | ||
557 | switch (mux) { | |
558 | case 0x1: | |
559 | result = HSO_PORT_CONTROL; | |
560 | break; | |
561 | case 0x2: | |
562 | result = HSO_PORT_APP; | |
563 | break; | |
564 | case 0x4: | |
565 | result = HSO_PORT_PCSC; | |
566 | break; | |
567 | case 0x8: | |
568 | result = HSO_PORT_GPS; | |
569 | break; | |
570 | case 0x10: | |
571 | result = HSO_PORT_APP2; | |
572 | break; | |
573 | default: | |
574 | result = HSO_PORT_NO_PORT; | |
575 | } | |
576 | return result; | |
577 | } | |
578 | ||
579 | /* converts port spec value to a mux value */ | |
580 | static u32 hso_port_to_mux(int port) | |
581 | { | |
582 | u32 result; | |
583 | ||
584 | switch (port & HSO_PORT_MASK) { | |
585 | case HSO_PORT_CONTROL: | |
586 | result = 0x0; | |
587 | break; | |
588 | case HSO_PORT_APP: | |
589 | result = 0x1; | |
590 | break; | |
591 | case HSO_PORT_PCSC: | |
592 | result = 0x2; | |
593 | break; | |
594 | case HSO_PORT_GPS: | |
595 | result = 0x3; | |
596 | break; | |
597 | case HSO_PORT_APP2: | |
598 | result = 0x4; | |
599 | break; | |
600 | default: | |
601 | result = 0x0; | |
602 | } | |
603 | return result; | |
604 | } | |
605 | ||
606 | static struct hso_serial *get_serial_by_shared_int_and_type( | |
607 | struct hso_shared_int *shared_int, | |
608 | int mux) | |
609 | { | |
610 | int i, port; | |
611 | ||
612 | port = hso_mux_to_port(mux); | |
613 | ||
614 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
8e95a202 JP |
615 | if (serial_table[i] && |
616 | (dev2ser(serial_table[i])->shared_int == shared_int) && | |
617 | ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) { | |
72dc1c09 GKH |
618 | return dev2ser(serial_table[i]); |
619 | } | |
620 | } | |
621 | ||
622 | return NULL; | |
623 | } | |
624 | ||
625 | static struct hso_serial *get_serial_by_index(unsigned index) | |
626 | { | |
0235f641 | 627 | struct hso_serial *serial = NULL; |
72dc1c09 GKH |
628 | unsigned long flags; |
629 | ||
72dc1c09 | 630 | spin_lock_irqsave(&serial_table_lock, flags); |
0235f641 GKH |
631 | if (serial_table[index]) |
632 | serial = dev2ser(serial_table[index]); | |
72dc1c09 GKH |
633 | spin_unlock_irqrestore(&serial_table_lock, flags); |
634 | ||
635 | return serial; | |
636 | } | |
637 | ||
638 | static int get_free_serial_index(void) | |
639 | { | |
640 | int index; | |
641 | unsigned long flags; | |
642 | ||
643 | spin_lock_irqsave(&serial_table_lock, flags); | |
644 | for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) { | |
645 | if (serial_table[index] == NULL) { | |
646 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
647 | return index; | |
648 | } | |
649 | } | |
650 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
651 | ||
652 | printk(KERN_ERR "%s: no free serial devices in table\n", __func__); | |
653 | return -1; | |
654 | } | |
655 | ||
656 | static void set_serial_by_index(unsigned index, struct hso_serial *serial) | |
657 | { | |
658 | unsigned long flags; | |
0235f641 | 659 | |
72dc1c09 GKH |
660 | spin_lock_irqsave(&serial_table_lock, flags); |
661 | if (serial) | |
662 | serial_table[index] = serial->parent; | |
663 | else | |
664 | serial_table[index] = NULL; | |
665 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
666 | } | |
667 | ||
68a351c5 JD |
668 | static void handle_usb_error(int status, const char *function, |
669 | struct hso_device *hso_dev) | |
72dc1c09 GKH |
670 | { |
671 | char *explanation; | |
672 | ||
673 | switch (status) { | |
674 | case -ENODEV: | |
675 | explanation = "no device"; | |
676 | break; | |
677 | case -ENOENT: | |
678 | explanation = "endpoint not enabled"; | |
679 | break; | |
680 | case -EPIPE: | |
681 | explanation = "endpoint stalled"; | |
682 | break; | |
683 | case -ENOSPC: | |
684 | explanation = "not enough bandwidth"; | |
685 | break; | |
686 | case -ESHUTDOWN: | |
687 | explanation = "device disabled"; | |
688 | break; | |
689 | case -EHOSTUNREACH: | |
690 | explanation = "device suspended"; | |
691 | break; | |
692 | case -EINVAL: | |
693 | case -EAGAIN: | |
694 | case -EFBIG: | |
695 | case -EMSGSIZE: | |
696 | explanation = "internal error"; | |
697 | break; | |
68a351c5 JD |
698 | case -EILSEQ: |
699 | case -EPROTO: | |
700 | case -ETIME: | |
701 | case -ETIMEDOUT: | |
702 | explanation = "protocol error"; | |
703 | if (hso_dev) | |
26c1f1f5 | 704 | usb_queue_reset_device(hso_dev->interface); |
68a351c5 | 705 | break; |
72dc1c09 GKH |
706 | default: |
707 | explanation = "unknown status"; | |
708 | break; | |
709 | } | |
68a351c5 JD |
710 | |
711 | /* log a meaningful explanation of an USB status */ | |
72dc1c09 GKH |
712 | D1("%s: received USB status - %s (%d)", function, explanation, status); |
713 | } | |
714 | ||
715 | /* Network interface functions */ | |
716 | ||
717 | /* called when net interface is brought up by ifconfig */ | |
718 | static int hso_net_open(struct net_device *net) | |
719 | { | |
720 | struct hso_net *odev = netdev_priv(net); | |
721 | unsigned long flags = 0; | |
722 | ||
723 | if (!odev) { | |
724 | dev_err(&net->dev, "No net device !\n"); | |
725 | return -ENODEV; | |
726 | } | |
727 | ||
728 | odev->skb_tx_buf = NULL; | |
729 | ||
730 | /* setup environment */ | |
731 | spin_lock_irqsave(&odev->net_lock, flags); | |
732 | odev->rx_parse_state = WAIT_IP; | |
733 | odev->rx_buf_size = 0; | |
734 | odev->rx_buf_missing = sizeof(struct iphdr); | |
735 | spin_unlock_irqrestore(&odev->net_lock, flags); | |
736 | ||
72dc1c09 GKH |
737 | /* We are up and running. */ |
738 | set_bit(HSO_NET_RUNNING, &odev->flags); | |
889bd9b6 | 739 | hso_start_net_device(odev->parent); |
72dc1c09 GKH |
740 | |
741 | /* Tell the kernel we are ready to start receiving from it */ | |
742 | netif_start_queue(net); | |
743 | ||
744 | return 0; | |
745 | } | |
746 | ||
747 | /* called when interface is brought down by ifconfig */ | |
748 | static int hso_net_close(struct net_device *net) | |
749 | { | |
750 | struct hso_net *odev = netdev_priv(net); | |
751 | ||
752 | /* we don't need the queue anymore */ | |
753 | netif_stop_queue(net); | |
754 | /* no longer running */ | |
755 | clear_bit(HSO_NET_RUNNING, &odev->flags); | |
756 | ||
757 | hso_stop_net_device(odev->parent); | |
758 | ||
759 | /* done */ | |
760 | return 0; | |
761 | } | |
762 | ||
763 | /* USB tells is xmit done, we should start the netqueue again */ | |
764 | static void write_bulk_callback(struct urb *urb) | |
765 | { | |
766 | struct hso_net *odev = urb->context; | |
767 | int status = urb->status; | |
768 | ||
769 | /* Sanity check */ | |
770 | if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { | |
771 | dev_err(&urb->dev->dev, "%s: device not running\n", __func__); | |
772 | return; | |
773 | } | |
774 | ||
775 | /* Do we still have a valid kernel network device? */ | |
776 | if (!netif_device_present(odev->net)) { | |
777 | dev_err(&urb->dev->dev, "%s: net device not present\n", | |
778 | __func__); | |
779 | return; | |
780 | } | |
781 | ||
782 | /* log status, but don't act on it, we don't need to resubmit anything | |
783 | * anyhow */ | |
784 | if (status) | |
68a351c5 | 785 | handle_usb_error(status, __func__, odev->parent); |
72dc1c09 GKH |
786 | |
787 | hso_put_activity(odev->parent); | |
788 | ||
789 | /* Tell the network interface we are ready for another frame */ | |
790 | netif_wake_queue(odev->net); | |
791 | } | |
792 | ||
793 | /* called by kernel when we need to transmit a packet */ | |
25a79c41 SH |
794 | static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb, |
795 | struct net_device *net) | |
72dc1c09 GKH |
796 | { |
797 | struct hso_net *odev = netdev_priv(net); | |
798 | int result; | |
799 | ||
800 | /* Tell the kernel, "No more frames 'til we are done with this one." */ | |
801 | netif_stop_queue(net); | |
802 | if (hso_get_activity(odev->parent) == -EAGAIN) { | |
803 | odev->skb_tx_buf = skb; | |
6ed10654 | 804 | return NETDEV_TX_OK; |
72dc1c09 GKH |
805 | } |
806 | ||
807 | /* log if asked */ | |
808 | DUMP1(skb->data, skb->len); | |
809 | /* Copy it from kernel memory to OUR memory */ | |
810 | memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len); | |
811 | D1("len: %d/%d", skb->len, MUX_BULK_TX_BUF_SIZE); | |
812 | ||
813 | /* Fill in the URB for shipping it out. */ | |
814 | usb_fill_bulk_urb(odev->mux_bulk_tx_urb, | |
815 | odev->parent->usb, | |
816 | usb_sndbulkpipe(odev->parent->usb, | |
817 | odev->out_endp-> | |
818 | bEndpointAddress & 0x7F), | |
819 | odev->mux_bulk_tx_buf, skb->len, write_bulk_callback, | |
820 | odev); | |
821 | ||
822 | /* Deal with the Zero Length packet problem, I hope */ | |
823 | odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET; | |
824 | ||
825 | /* Send the URB on its merry way. */ | |
826 | result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC); | |
827 | if (result) { | |
828 | dev_warn(&odev->parent->interface->dev, | |
8a5c9c49 | 829 | "failed mux_bulk_tx_urb %d\n", result); |
72dc1c09 GKH |
830 | net->stats.tx_errors++; |
831 | netif_start_queue(net); | |
832 | } else { | |
833 | net->stats.tx_packets++; | |
834 | net->stats.tx_bytes += skb->len; | |
72dc1c09 GKH |
835 | } |
836 | dev_kfree_skb(skb); | |
837 | /* we're done */ | |
5b2c4b97 | 838 | return NETDEV_TX_OK; |
72dc1c09 GKH |
839 | } |
840 | ||
0fc0b732 | 841 | static const struct ethtool_ops ops = { |
72dc1c09 GKH |
842 | .get_link = ethtool_op_get_link |
843 | }; | |
844 | ||
845 | /* called when a packet did not ack after watchdogtimeout */ | |
846 | static void hso_net_tx_timeout(struct net_device *net) | |
847 | { | |
848 | struct hso_net *odev = netdev_priv(net); | |
849 | ||
850 | if (!odev) | |
851 | return; | |
852 | ||
853 | /* Tell syslog we are hosed. */ | |
854 | dev_warn(&net->dev, "Tx timed out.\n"); | |
855 | ||
856 | /* Tear the waiting frame off the list */ | |
8e95a202 JP |
857 | if (odev->mux_bulk_tx_urb && |
858 | (odev->mux_bulk_tx_urb->status == -EINPROGRESS)) | |
72dc1c09 GKH |
859 | usb_unlink_urb(odev->mux_bulk_tx_urb); |
860 | ||
861 | /* Update statistics */ | |
862 | net->stats.tx_errors++; | |
863 | } | |
864 | ||
865 | /* make a real packet from the received USB buffer */ | |
866 | static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt, | |
867 | unsigned int count, unsigned char is_eop) | |
868 | { | |
869 | unsigned short temp_bytes; | |
870 | unsigned short buffer_offset = 0; | |
871 | unsigned short frame_len; | |
872 | unsigned char *tmp_rx_buf; | |
873 | ||
874 | /* log if needed */ | |
875 | D1("Rx %d bytes", count); | |
876 | DUMP(ip_pkt, min(128, (int)count)); | |
877 | ||
878 | while (count) { | |
879 | switch (odev->rx_parse_state) { | |
880 | case WAIT_IP: | |
881 | /* waiting for IP header. */ | |
882 | /* wanted bytes - size of ip header */ | |
883 | temp_bytes = | |
884 | (count < | |
885 | odev->rx_buf_missing) ? count : odev-> | |
886 | rx_buf_missing; | |
887 | ||
888 | memcpy(((unsigned char *)(&odev->rx_ip_hdr)) + | |
889 | odev->rx_buf_size, ip_pkt + buffer_offset, | |
890 | temp_bytes); | |
891 | ||
892 | odev->rx_buf_size += temp_bytes; | |
893 | buffer_offset += temp_bytes; | |
894 | odev->rx_buf_missing -= temp_bytes; | |
895 | count -= temp_bytes; | |
896 | ||
897 | if (!odev->rx_buf_missing) { | |
898 | /* header is complete allocate an sk_buffer and | |
899 | * continue to WAIT_DATA */ | |
900 | frame_len = ntohs(odev->rx_ip_hdr.tot_len); | |
901 | ||
902 | if ((frame_len > DEFAULT_MRU) || | |
903 | (frame_len < sizeof(struct iphdr))) { | |
904 | dev_err(&odev->net->dev, | |
905 | "Invalid frame (%d) length\n", | |
906 | frame_len); | |
907 | odev->rx_parse_state = WAIT_SYNC; | |
908 | continue; | |
909 | } | |
910 | /* Allocate an sk_buff */ | |
d65a68a8 PZ |
911 | odev->skb_rx_buf = netdev_alloc_skb(odev->net, |
912 | frame_len); | |
72dc1c09 GKH |
913 | if (!odev->skb_rx_buf) { |
914 | /* We got no receive buffer. */ | |
915 | D1("could not allocate memory"); | |
916 | odev->rx_parse_state = WAIT_SYNC; | |
04166055 | 917 | continue; |
72dc1c09 | 918 | } |
72dc1c09 GKH |
919 | |
920 | /* Copy what we got so far. make room for iphdr | |
921 | * after tail. */ | |
922 | tmp_rx_buf = | |
923 | skb_put(odev->skb_rx_buf, | |
924 | sizeof(struct iphdr)); | |
925 | memcpy(tmp_rx_buf, (char *)&(odev->rx_ip_hdr), | |
926 | sizeof(struct iphdr)); | |
927 | ||
928 | /* ETH_HLEN */ | |
929 | odev->rx_buf_size = sizeof(struct iphdr); | |
930 | ||
931 | /* Filip actually use .tot_len */ | |
932 | odev->rx_buf_missing = | |
933 | frame_len - sizeof(struct iphdr); | |
934 | odev->rx_parse_state = WAIT_DATA; | |
935 | } | |
936 | break; | |
937 | ||
938 | case WAIT_DATA: | |
939 | temp_bytes = (count < odev->rx_buf_missing) | |
940 | ? count : odev->rx_buf_missing; | |
941 | ||
942 | /* Copy the rest of the bytes that are left in the | |
943 | * buffer into the waiting sk_buf. */ | |
944 | /* Make room for temp_bytes after tail. */ | |
945 | tmp_rx_buf = skb_put(odev->skb_rx_buf, temp_bytes); | |
946 | memcpy(tmp_rx_buf, ip_pkt + buffer_offset, temp_bytes); | |
947 | ||
948 | odev->rx_buf_missing -= temp_bytes; | |
949 | count -= temp_bytes; | |
950 | buffer_offset += temp_bytes; | |
951 | odev->rx_buf_size += temp_bytes; | |
952 | if (!odev->rx_buf_missing) { | |
953 | /* Packet is complete. Inject into stack. */ | |
954 | /* We have IP packet here */ | |
09640e63 | 955 | odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP); |
72dc1c09 GKH |
956 | skb_reset_mac_header(odev->skb_rx_buf); |
957 | ||
958 | /* Ship it off to the kernel */ | |
959 | netif_rx(odev->skb_rx_buf); | |
960 | /* No longer our buffer. */ | |
961 | odev->skb_rx_buf = NULL; | |
962 | ||
963 | /* update out statistics */ | |
964 | odev->net->stats.rx_packets++; | |
965 | ||
966 | odev->net->stats.rx_bytes += odev->rx_buf_size; | |
967 | ||
968 | odev->rx_buf_size = 0; | |
969 | odev->rx_buf_missing = sizeof(struct iphdr); | |
970 | odev->rx_parse_state = WAIT_IP; | |
971 | } | |
972 | break; | |
973 | ||
974 | case WAIT_SYNC: | |
975 | D1(" W_S"); | |
976 | count = 0; | |
977 | break; | |
978 | default: | |
979 | D1(" "); | |
980 | count--; | |
981 | break; | |
982 | } | |
983 | } | |
984 | ||
985 | /* Recovery mechanism for WAIT_SYNC state. */ | |
986 | if (is_eop) { | |
987 | if (odev->rx_parse_state == WAIT_SYNC) { | |
988 | odev->rx_parse_state = WAIT_IP; | |
989 | odev->rx_buf_size = 0; | |
990 | odev->rx_buf_missing = sizeof(struct iphdr); | |
991 | } | |
992 | } | |
993 | } | |
994 | ||
5591c75d JP |
995 | static void fix_crc_bug(struct urb *urb, __le16 max_packet_size) |
996 | { | |
997 | static const u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF }; | |
998 | u32 rest = urb->actual_length % le16_to_cpu(max_packet_size); | |
999 | ||
1000 | if (((rest == 5) || (rest == 6)) && | |
1001 | !memcmp(((u8 *)urb->transfer_buffer) + urb->actual_length - 4, | |
1002 | crc_check, 4)) { | |
1003 | urb->actual_length -= 4; | |
1004 | } | |
1005 | } | |
1006 | ||
72dc1c09 GKH |
1007 | /* Moving data from usb to kernel (in interrupt state) */ |
1008 | static void read_bulk_callback(struct urb *urb) | |
1009 | { | |
1010 | struct hso_net *odev = urb->context; | |
1011 | struct net_device *net; | |
1012 | int result; | |
1013 | int status = urb->status; | |
1014 | ||
1015 | /* is al ok? (Filip: Who's Al ?) */ | |
1016 | if (status) { | |
68a351c5 | 1017 | handle_usb_error(status, __func__, odev->parent); |
72dc1c09 GKH |
1018 | return; |
1019 | } | |
1020 | ||
1021 | /* Sanity check */ | |
1022 | if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { | |
1023 | D1("BULK IN callback but driver is not active!"); | |
1024 | return; | |
1025 | } | |
1026 | usb_mark_last_busy(urb->dev); | |
1027 | ||
1028 | net = odev->net; | |
1029 | ||
1030 | if (!netif_device_present(net)) { | |
1031 | /* Somebody killed our network interface... */ | |
1032 | return; | |
1033 | } | |
1034 | ||
5591c75d JP |
1035 | if (odev->parent->port_spec & HSO_INFO_CRC_BUG) |
1036 | fix_crc_bug(urb, odev->in_endp->wMaxPacketSize); | |
72dc1c09 GKH |
1037 | |
1038 | /* do we even have a packet? */ | |
1039 | if (urb->actual_length) { | |
1040 | /* Handle the IP stream, add header and push it onto network | |
1041 | * stack if the packet is complete. */ | |
1042 | spin_lock(&odev->net_lock); | |
1043 | packetizeRx(odev, urb->transfer_buffer, urb->actual_length, | |
1044 | (urb->transfer_buffer_length > | |
1045 | urb->actual_length) ? 1 : 0); | |
1046 | spin_unlock(&odev->net_lock); | |
1047 | } | |
1048 | ||
1049 | /* We are done with this URB, resubmit it. Prep the USB to wait for | |
1050 | * another frame. Reuse same as received. */ | |
1051 | usb_fill_bulk_urb(urb, | |
1052 | odev->parent->usb, | |
1053 | usb_rcvbulkpipe(odev->parent->usb, | |
1054 | odev->in_endp-> | |
1055 | bEndpointAddress & 0x7F), | |
1056 | urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE, | |
1057 | read_bulk_callback, odev); | |
1058 | ||
1059 | /* Give this to the USB subsystem so it can tell us when more data | |
1060 | * arrives. */ | |
1061 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1062 | if (result) | |
1063 | dev_warn(&odev->parent->interface->dev, | |
8a5c9c49 | 1064 | "%s failed submit mux_bulk_rx_urb %d\n", __func__, |
72dc1c09 GKH |
1065 | result); |
1066 | } | |
1067 | ||
1068 | /* Serial driver functions */ | |
1069 | ||
ac9720c3 | 1070 | static void hso_init_termios(struct ktermios *termios) |
72dc1c09 | 1071 | { |
72dc1c09 GKH |
1072 | /* |
1073 | * The default requirements for this device are: | |
1074 | */ | |
72dc1c09 GKH |
1075 | termios->c_iflag &= |
1076 | ~(IGNBRK /* disable ignore break */ | |
1077 | | BRKINT /* disable break causes interrupt */ | |
1078 | | PARMRK /* disable mark parity errors */ | |
1079 | | ISTRIP /* disable clear high bit of input characters */ | |
1080 | | INLCR /* disable translate NL to CR */ | |
1081 | | IGNCR /* disable ignore CR */ | |
1082 | | ICRNL /* disable translate CR to NL */ | |
1083 | | IXON); /* disable enable XON/XOFF flow control */ | |
1084 | ||
1085 | /* disable postprocess output characters */ | |
1086 | termios->c_oflag &= ~OPOST; | |
1087 | ||
1088 | termios->c_lflag &= | |
1089 | ~(ECHO /* disable echo input characters */ | |
1090 | | ECHONL /* disable echo new line */ | |
1091 | | ICANON /* disable erase, kill, werase, and rprnt | |
1092 | special characters */ | |
1093 | | ISIG /* disable interrupt, quit, and suspend special | |
1094 | characters */ | |
1095 | | IEXTEN); /* disable non-POSIX special characters */ | |
1096 | ||
1097 | termios->c_cflag &= | |
1098 | ~(CSIZE /* no size */ | |
1099 | | PARENB /* disable parity bit */ | |
1100 | | CBAUD /* clear current baud rate */ | |
1101 | | CBAUDEX); /* clear current buad rate */ | |
1102 | ||
1103 | termios->c_cflag |= CS8; /* character size 8 bits */ | |
1104 | ||
1105 | /* baud rate 115200 */ | |
ac9720c3 AC |
1106 | tty_termios_encode_baud_rate(termios, 115200, 115200); |
1107 | } | |
1108 | ||
1109 | static void _hso_serial_set_termios(struct tty_struct *tty, | |
1110 | struct ktermios *old) | |
1111 | { | |
30409420 | 1112 | struct hso_serial *serial = tty->driver_data; |
ac9720c3 AC |
1113 | |
1114 | if (!serial) { | |
1115 | printk(KERN_ERR "%s: no tty structures", __func__); | |
1116 | return; | |
1117 | } | |
1118 | ||
1119 | D4("port %d", serial->minor); | |
72dc1c09 GKH |
1120 | |
1121 | /* | |
ac9720c3 | 1122 | * Fix up unsupported bits |
72dc1c09 | 1123 | */ |
adc8d746 | 1124 | tty->termios.c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */ |
ac9720c3 | 1125 | |
adc8d746 | 1126 | tty->termios.c_cflag &= |
ac9720c3 AC |
1127 | ~(CSIZE /* no size */ |
1128 | | PARENB /* disable parity bit */ | |
1129 | | CBAUD /* clear current baud rate */ | |
1130 | | CBAUDEX); /* clear current buad rate */ | |
1131 | ||
adc8d746 | 1132 | tty->termios.c_cflag |= CS8; /* character size 8 bits */ |
ac9720c3 AC |
1133 | |
1134 | /* baud rate 115200 */ | |
1135 | tty_encode_baud_rate(tty, 115200, 115200); | |
72dc1c09 GKH |
1136 | } |
1137 | ||
8ef5ba63 DJB |
1138 | static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb) |
1139 | { | |
1140 | int result; | |
8ef5ba63 DJB |
1141 | /* We are done with this URB, resubmit it. Prep the USB to wait for |
1142 | * another frame */ | |
1143 | usb_fill_bulk_urb(urb, serial->parent->usb, | |
1144 | usb_rcvbulkpipe(serial->parent->usb, | |
1145 | serial->in_endp-> | |
1146 | bEndpointAddress & 0x7F), | |
1147 | urb->transfer_buffer, serial->rx_data_length, | |
1148 | hso_std_serial_read_bulk_callback, serial); | |
1149 | /* Give this to the USB subsystem so it can tell us when more data | |
1150 | * arrives. */ | |
1151 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1152 | if (result) { | |
1153 | dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n", | |
1154 | __func__, result); | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | ||
1159 | ||
1160 | ||
1161 | static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial) | |
1162 | { | |
1163 | int count; | |
1164 | struct urb *curr_urb; | |
1165 | ||
1166 | while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) { | |
1167 | curr_urb = serial->rx_urb[serial->curr_rx_urb_idx]; | |
1168 | count = put_rxbuf_data(curr_urb, serial); | |
1169 | if (count == -1) | |
1170 | return; | |
1171 | if (count == 0) { | |
1172 | serial->curr_rx_urb_idx++; | |
1173 | if (serial->curr_rx_urb_idx >= serial->num_rx_urbs) | |
1174 | serial->curr_rx_urb_idx = 0; | |
1175 | hso_resubmit_rx_bulk_urb(serial, curr_urb); | |
1176 | } | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial) | |
1181 | { | |
1182 | int count = 0; | |
1183 | struct urb *urb; | |
1184 | ||
1185 | urb = serial->rx_urb[0]; | |
5ce76e77 | 1186 | if (serial->port.count > 0) { |
8ef5ba63 DJB |
1187 | count = put_rxbuf_data(urb, serial); |
1188 | if (count == -1) | |
1189 | return; | |
1190 | } | |
1191 | /* Re issue a read as long as we receive data. */ | |
1192 | ||
1193 | if (count == 0 && ((urb->actual_length != 0) || | |
1194 | (serial->rx_state == RX_PENDING))) { | |
1195 | serial->rx_state = RX_SENT; | |
1196 | hso_mux_serial_read(serial); | |
1197 | } else | |
1198 | serial->rx_state = RX_IDLE; | |
1199 | } | |
1200 | ||
1201 | ||
1202 | /* read callback for Diag and CS port */ | |
1203 | static void hso_std_serial_read_bulk_callback(struct urb *urb) | |
1204 | { | |
1205 | struct hso_serial *serial = urb->context; | |
1206 | int status = urb->status; | |
1207 | ||
4ccd0bb9 DC |
1208 | D4("\n--- Got serial_read_bulk callback %02x ---", status); |
1209 | ||
8ef5ba63 DJB |
1210 | /* sanity check */ |
1211 | if (!serial) { | |
1212 | D1("serial == NULL"); | |
1213 | return; | |
4ccd0bb9 DC |
1214 | } |
1215 | if (status) { | |
68a351c5 | 1216 | handle_usb_error(status, __func__, serial->parent); |
8ef5ba63 DJB |
1217 | return; |
1218 | } | |
1219 | ||
8ef5ba63 DJB |
1220 | D1("Actual length = %d\n", urb->actual_length); |
1221 | DUMP1(urb->transfer_buffer, urb->actual_length); | |
1222 | ||
1223 | /* Anyone listening? */ | |
5ce76e77 | 1224 | if (serial->port.count == 0) |
8ef5ba63 DJB |
1225 | return; |
1226 | ||
4ccd0bb9 DC |
1227 | if (serial->parent->port_spec & HSO_INFO_CRC_BUG) |
1228 | fix_crc_bug(urb, serial->in_endp->wMaxPacketSize); | |
1229 | /* Valid data, handle RX data */ | |
1230 | spin_lock(&serial->serial_lock); | |
1231 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1; | |
1232 | put_rxbuf_data_and_resubmit_bulk_urb(serial); | |
1233 | spin_unlock(&serial->serial_lock); | |
8ef5ba63 DJB |
1234 | } |
1235 | ||
1236 | /* | |
1237 | * This needs to be a tasklet otherwise we will | |
1238 | * end up recursively calling this function. | |
1239 | */ | |
0227abc9 | 1240 | static void hso_unthrottle_tasklet(struct hso_serial *serial) |
8ef5ba63 DJB |
1241 | { |
1242 | unsigned long flags; | |
1243 | ||
1244 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1245 | if ((serial->parent->port_spec & HSO_INTF_MUX)) | |
1246 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); | |
1247 | else | |
1248 | put_rxbuf_data_and_resubmit_bulk_urb(serial); | |
1249 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1250 | } | |
1251 | ||
1252 | static void hso_unthrottle(struct tty_struct *tty) | |
1253 | { | |
30409420 | 1254 | struct hso_serial *serial = tty->driver_data; |
8ef5ba63 DJB |
1255 | |
1256 | tasklet_hi_schedule(&serial->unthrottle_tasklet); | |
1257 | } | |
1258 | ||
72dc1c09 GKH |
1259 | /* open the requested serial port */ |
1260 | static int hso_serial_open(struct tty_struct *tty, struct file *filp) | |
1261 | { | |
1262 | struct hso_serial *serial = get_serial_by_index(tty->index); | |
ab153d84 | 1263 | int result; |
72dc1c09 GKH |
1264 | |
1265 | /* sanity check */ | |
1266 | if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) { | |
e136e303 | 1267 | WARN_ON(1); |
72dc1c09 GKH |
1268 | tty->driver_data = NULL; |
1269 | D1("Failed to open port"); | |
1270 | return -ENODEV; | |
1271 | } | |
1272 | ||
ab153d84 | 1273 | mutex_lock(&serial->parent->mutex); |
ab153d84 DM |
1274 | result = usb_autopm_get_interface(serial->parent->interface); |
1275 | if (result < 0) | |
72dc1c09 GKH |
1276 | goto err_out; |
1277 | ||
1278 | D1("Opening %d", serial->minor); | |
72dc1c09 GKH |
1279 | |
1280 | /* setup */ | |
1281 | tty->driver_data = serial; | |
9f8c0b08 | 1282 | tty_port_tty_set(&serial->port, tty); |
72dc1c09 | 1283 | |
2f9889a2 | 1284 | /* check for port already opened, if not set the termios */ |
5ce76e77 JS |
1285 | serial->port.count++; |
1286 | if (serial->port.count == 1) { | |
8ef5ba63 | 1287 | serial->rx_state = RX_IDLE; |
72dc1c09 GKH |
1288 | /* Force default termio settings */ |
1289 | _hso_serial_set_termios(tty, NULL); | |
8ef5ba63 DJB |
1290 | tasklet_init(&serial->unthrottle_tasklet, |
1291 | (void (*)(unsigned long))hso_unthrottle_tasklet, | |
1292 | (unsigned long)serial); | |
ab153d84 DM |
1293 | result = hso_start_serial_device(serial->parent, GFP_KERNEL); |
1294 | if (result) { | |
72dc1c09 | 1295 | hso_stop_serial_device(serial->parent); |
5ce76e77 | 1296 | serial->port.count--; |
29bd3bc1 OS |
1297 | } else { |
1298 | kref_get(&serial->parent->ref); | |
72dc1c09 GKH |
1299 | } |
1300 | } else { | |
1301 | D1("Port was already open"); | |
1302 | } | |
1303 | ||
1304 | usb_autopm_put_interface(serial->parent->interface); | |
1305 | ||
1306 | /* done */ | |
ab153d84 | 1307 | if (result) |
20b9d177 | 1308 | hso_serial_tiocmset(tty, TIOCM_RTS | TIOCM_DTR, 0); |
72dc1c09 | 1309 | err_out: |
ab153d84 DM |
1310 | mutex_unlock(&serial->parent->mutex); |
1311 | return result; | |
72dc1c09 GKH |
1312 | } |
1313 | ||
1314 | /* close the requested serial port */ | |
1315 | static void hso_serial_close(struct tty_struct *tty, struct file *filp) | |
1316 | { | |
1317 | struct hso_serial *serial = tty->driver_data; | |
1318 | u8 usb_gone; | |
1319 | ||
1320 | D1("Closing serial port"); | |
1321 | ||
e136e303 AC |
1322 | /* Open failed, no close cleanup required */ |
1323 | if (serial == NULL) | |
1324 | return; | |
1325 | ||
ab153d84 | 1326 | mutex_lock(&serial->parent->mutex); |
72dc1c09 GKH |
1327 | usb_gone = serial->parent->usb_gone; |
1328 | ||
1329 | if (!usb_gone) | |
1330 | usb_autopm_get_interface(serial->parent->interface); | |
1331 | ||
1332 | /* reset the rts and dtr */ | |
1333 | /* do the actual close */ | |
5ce76e77 | 1334 | serial->port.count--; |
dcfcb256 | 1335 | |
5ce76e77 JS |
1336 | if (serial->port.count <= 0) { |
1337 | serial->port.count = 0; | |
9f8c0b08 | 1338 | tty_port_tty_set(&serial->port, NULL); |
72dc1c09 GKH |
1339 | if (!usb_gone) |
1340 | hso_stop_serial_device(serial->parent); | |
8ef5ba63 | 1341 | tasklet_kill(&serial->unthrottle_tasklet); |
72dc1c09 | 1342 | } |
8ef5ba63 | 1343 | |
72dc1c09 GKH |
1344 | if (!usb_gone) |
1345 | usb_autopm_put_interface(serial->parent->interface); | |
ab153d84 DM |
1346 | |
1347 | mutex_unlock(&serial->parent->mutex); | |
72dc1c09 GKH |
1348 | } |
1349 | ||
1350 | /* close the requested serial port */ | |
1351 | static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf, | |
1352 | int count) | |
1353 | { | |
30409420 | 1354 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1355 | int space, tx_bytes; |
1356 | unsigned long flags; | |
1357 | ||
1358 | /* sanity check */ | |
1359 | if (serial == NULL) { | |
1360 | printk(KERN_ERR "%s: serial is NULL\n", __func__); | |
1361 | return -ENODEV; | |
1362 | } | |
1363 | ||
1364 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1365 | ||
1366 | space = serial->tx_data_length - serial->tx_buffer_count; | |
1367 | tx_bytes = (count < space) ? count : space; | |
1368 | ||
1369 | if (!tx_bytes) | |
1370 | goto out; | |
1371 | ||
1372 | memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes); | |
1373 | serial->tx_buffer_count += tx_bytes; | |
1374 | ||
1375 | out: | |
1376 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1377 | ||
1378 | hso_kick_transmit(serial); | |
1379 | /* done */ | |
1380 | return tx_bytes; | |
1381 | } | |
1382 | ||
1383 | /* how much room is there for writing */ | |
1384 | static int hso_serial_write_room(struct tty_struct *tty) | |
1385 | { | |
30409420 | 1386 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1387 | int room; |
1388 | unsigned long flags; | |
1389 | ||
1390 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1391 | room = serial->tx_data_length - serial->tx_buffer_count; | |
1392 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1393 | ||
1394 | /* return free room */ | |
1395 | return room; | |
1396 | } | |
1397 | ||
29bd3bc1 OS |
1398 | static void hso_serial_cleanup(struct tty_struct *tty) |
1399 | { | |
1400 | struct hso_serial *serial = tty->driver_data; | |
1401 | ||
1402 | if (!serial) | |
1403 | return; | |
1404 | ||
1405 | kref_put(&serial->parent->ref, hso_serial_ref_free); | |
1406 | } | |
1407 | ||
72dc1c09 GKH |
1408 | /* setup the term */ |
1409 | static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old) | |
1410 | { | |
30409420 | 1411 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1412 | unsigned long flags; |
1413 | ||
1414 | if (old) | |
1415 | D5("Termios called with: cflags new[%d] - old[%d]", | |
adc8d746 | 1416 | tty->termios.c_cflag, old->c_cflag); |
72dc1c09 GKH |
1417 | |
1418 | /* the actual setup */ | |
1419 | spin_lock_irqsave(&serial->serial_lock, flags); | |
5ce76e77 | 1420 | if (serial->port.count) |
72dc1c09 GKH |
1421 | _hso_serial_set_termios(tty, old); |
1422 | else | |
adc8d746 | 1423 | tty->termios = *old; |
72dc1c09 GKH |
1424 | spin_unlock_irqrestore(&serial->serial_lock, flags); |
1425 | ||
1426 | /* done */ | |
72dc1c09 GKH |
1427 | } |
1428 | ||
1429 | /* how many characters in the buffer */ | |
1430 | static int hso_serial_chars_in_buffer(struct tty_struct *tty) | |
1431 | { | |
30409420 | 1432 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1433 | int chars; |
1434 | unsigned long flags; | |
1435 | ||
1436 | /* sanity check */ | |
1437 | if (serial == NULL) | |
1438 | return 0; | |
1439 | ||
1440 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1441 | chars = serial->tx_buffer_count; | |
1442 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1443 | ||
1444 | return chars; | |
1445 | } | |
0227abc9 HE |
1446 | static int tiocmget_submit_urb(struct hso_serial *serial, |
1447 | struct hso_tiocmget *tiocmget, | |
1448 | struct usb_device *usb) | |
542f5482 DJB |
1449 | { |
1450 | int result; | |
1451 | ||
1452 | if (serial->parent->usb_gone) | |
1453 | return -ENODEV; | |
1454 | usb_fill_int_urb(tiocmget->urb, usb, | |
1455 | usb_rcvintpipe(usb, | |
1456 | tiocmget->endp-> | |
1457 | bEndpointAddress & 0x7F), | |
1458 | &tiocmget->serial_state_notification, | |
1459 | sizeof(struct hso_serial_state_notification), | |
1460 | tiocmget_intr_callback, serial, | |
1461 | tiocmget->endp->bInterval); | |
1462 | result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC); | |
1463 | if (result) { | |
1464 | dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__, | |
1465 | result); | |
1466 | } | |
1467 | return result; | |
1468 | ||
1469 | } | |
1470 | ||
1471 | static void tiocmget_intr_callback(struct urb *urb) | |
1472 | { | |
1473 | struct hso_serial *serial = urb->context; | |
1474 | struct hso_tiocmget *tiocmget; | |
1475 | int status = urb->status; | |
1476 | u16 UART_state_bitmap, prev_UART_state_bitmap; | |
1477 | struct uart_icount *icount; | |
1478 | struct hso_serial_state_notification *serial_state_notification; | |
1479 | struct usb_device *usb; | |
e5e97ee9 | 1480 | int if_num; |
542f5482 DJB |
1481 | |
1482 | /* Sanity checks */ | |
1483 | if (!serial) | |
1484 | return; | |
1485 | if (status) { | |
68a351c5 | 1486 | handle_usb_error(status, __func__, serial->parent); |
542f5482 DJB |
1487 | return; |
1488 | } | |
e5e97ee9 DW |
1489 | |
1490 | /* tiocmget is only supported on HSO_PORT_MODEM */ | |
542f5482 DJB |
1491 | tiocmget = serial->tiocmget; |
1492 | if (!tiocmget) | |
1493 | return; | |
e5e97ee9 DW |
1494 | BUG_ON((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM); |
1495 | ||
542f5482 | 1496 | usb = serial->parent->usb; |
e5e97ee9 DW |
1497 | if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber; |
1498 | ||
1499 | /* wIndex should be the USB interface number of the port to which the | |
1500 | * notification applies, which should always be the Modem port. | |
1501 | */ | |
542f5482 DJB |
1502 | serial_state_notification = &tiocmget->serial_state_notification; |
1503 | if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE || | |
1504 | serial_state_notification->bNotification != B_NOTIFICATION || | |
1505 | le16_to_cpu(serial_state_notification->wValue) != W_VALUE || | |
e5e97ee9 | 1506 | le16_to_cpu(serial_state_notification->wIndex) != if_num || |
542f5482 DJB |
1507 | le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) { |
1508 | dev_warn(&usb->dev, | |
1509 | "hso received invalid serial state notification\n"); | |
1510 | DUMP(serial_state_notification, | |
9ce673d5 | 1511 | sizeof(struct hso_serial_state_notification)); |
542f5482 DJB |
1512 | } else { |
1513 | ||
1514 | UART_state_bitmap = le16_to_cpu(serial_state_notification-> | |
1515 | UART_state_bitmap); | |
1516 | prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap; | |
1517 | icount = &tiocmget->icount; | |
1518 | spin_lock(&serial->serial_lock); | |
1519 | if ((UART_state_bitmap & B_OVERRUN) != | |
1520 | (prev_UART_state_bitmap & B_OVERRUN)) | |
1521 | icount->parity++; | |
1522 | if ((UART_state_bitmap & B_PARITY) != | |
1523 | (prev_UART_state_bitmap & B_PARITY)) | |
1524 | icount->parity++; | |
1525 | if ((UART_state_bitmap & B_FRAMING) != | |
1526 | (prev_UART_state_bitmap & B_FRAMING)) | |
1527 | icount->frame++; | |
1528 | if ((UART_state_bitmap & B_RING_SIGNAL) && | |
1529 | !(prev_UART_state_bitmap & B_RING_SIGNAL)) | |
1530 | icount->rng++; | |
1531 | if ((UART_state_bitmap & B_BREAK) != | |
1532 | (prev_UART_state_bitmap & B_BREAK)) | |
1533 | icount->brk++; | |
1534 | if ((UART_state_bitmap & B_TX_CARRIER) != | |
1535 | (prev_UART_state_bitmap & B_TX_CARRIER)) | |
1536 | icount->dsr++; | |
1537 | if ((UART_state_bitmap & B_RX_CARRIER) != | |
1538 | (prev_UART_state_bitmap & B_RX_CARRIER)) | |
1539 | icount->dcd++; | |
1540 | tiocmget->prev_UART_state_bitmap = UART_state_bitmap; | |
1541 | spin_unlock(&serial->serial_lock); | |
1542 | tiocmget->intr_completed = 1; | |
1543 | wake_up_interruptible(&tiocmget->waitq); | |
1544 | } | |
1545 | memset(serial_state_notification, 0, | |
1546 | sizeof(struct hso_serial_state_notification)); | |
1547 | tiocmget_submit_urb(serial, | |
1548 | tiocmget, | |
1549 | serial->parent->usb); | |
1550 | } | |
1551 | ||
1552 | /* | |
1553 | * next few functions largely stolen from drivers/serial/serial_core.c | |
1554 | */ | |
1555 | /* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
1556 | * - mask passed in arg for lines of interest | |
1557 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
1558 | * Caller should use TIOCGICOUNT to see which one it was | |
1559 | */ | |
1560 | static int | |
1561 | hso_wait_modem_status(struct hso_serial *serial, unsigned long arg) | |
1562 | { | |
1563 | DECLARE_WAITQUEUE(wait, current); | |
1564 | struct uart_icount cprev, cnow; | |
1565 | struct hso_tiocmget *tiocmget; | |
1566 | int ret; | |
1567 | ||
1568 | tiocmget = serial->tiocmget; | |
1569 | if (!tiocmget) | |
1570 | return -ENOENT; | |
1571 | /* | |
1572 | * note the counters on entry | |
1573 | */ | |
1574 | spin_lock_irq(&serial->serial_lock); | |
1575 | memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount)); | |
1576 | spin_unlock_irq(&serial->serial_lock); | |
1577 | add_wait_queue(&tiocmget->waitq, &wait); | |
1578 | for (;;) { | |
1579 | spin_lock_irq(&serial->serial_lock); | |
1580 | memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount)); | |
1581 | spin_unlock_irq(&serial->serial_lock); | |
1582 | set_current_state(TASK_INTERRUPTIBLE); | |
1583 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1584 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1585 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) { | |
1586 | ret = 0; | |
1587 | break; | |
1588 | } | |
1589 | schedule(); | |
1590 | /* see if a signal did it */ | |
1591 | if (signal_pending(current)) { | |
1592 | ret = -ERESTARTSYS; | |
1593 | break; | |
1594 | } | |
1595 | cprev = cnow; | |
1596 | } | |
1597 | current->state = TASK_RUNNING; | |
1598 | remove_wait_queue(&tiocmget->waitq, &wait); | |
1599 | ||
1600 | return ret; | |
1601 | } | |
1602 | ||
1603 | /* | |
1604 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
1605 | * Return: write counters to the user passed counter struct | |
1606 | * NB: both 1->0 and 0->1 transitions are counted except for | |
1607 | * RI where only 0->1 is counted. | |
1608 | */ | |
0bca1b91 AC |
1609 | static int hso_get_count(struct tty_struct *tty, |
1610 | struct serial_icounter_struct *icount) | |
542f5482 | 1611 | { |
542f5482 | 1612 | struct uart_icount cnow; |
30409420 | 1613 | struct hso_serial *serial = tty->driver_data; |
542f5482 DJB |
1614 | struct hso_tiocmget *tiocmget = serial->tiocmget; |
1615 | ||
22ad7499 | 1616 | memset(icount, 0, sizeof(struct serial_icounter_struct)); |
7011e660 | 1617 | |
542f5482 DJB |
1618 | if (!tiocmget) |
1619 | return -ENOENT; | |
1620 | spin_lock_irq(&serial->serial_lock); | |
1621 | memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount)); | |
1622 | spin_unlock_irq(&serial->serial_lock); | |
1623 | ||
0bca1b91 AC |
1624 | icount->cts = cnow.cts; |
1625 | icount->dsr = cnow.dsr; | |
1626 | icount->rng = cnow.rng; | |
1627 | icount->dcd = cnow.dcd; | |
1628 | icount->rx = cnow.rx; | |
1629 | icount->tx = cnow.tx; | |
1630 | icount->frame = cnow.frame; | |
1631 | icount->overrun = cnow.overrun; | |
1632 | icount->parity = cnow.parity; | |
1633 | icount->brk = cnow.brk; | |
1634 | icount->buf_overrun = cnow.buf_overrun; | |
542f5482 | 1635 | |
0bca1b91 | 1636 | return 0; |
542f5482 DJB |
1637 | } |
1638 | ||
72dc1c09 | 1639 | |
60b33c13 | 1640 | static int hso_serial_tiocmget(struct tty_struct *tty) |
72dc1c09 | 1641 | { |
542f5482 | 1642 | int retval; |
30409420 | 1643 | struct hso_serial *serial = tty->driver_data; |
542f5482 DJB |
1644 | struct hso_tiocmget *tiocmget; |
1645 | u16 UART_state_bitmap; | |
72dc1c09 GKH |
1646 | |
1647 | /* sanity check */ | |
1648 | if (!serial) { | |
1649 | D1("no tty structures"); | |
1650 | return -EINVAL; | |
1651 | } | |
542f5482 DJB |
1652 | spin_lock_irq(&serial->serial_lock); |
1653 | retval = ((serial->rts_state) ? TIOCM_RTS : 0) | | |
72dc1c09 | 1654 | ((serial->dtr_state) ? TIOCM_DTR : 0); |
542f5482 DJB |
1655 | tiocmget = serial->tiocmget; |
1656 | if (tiocmget) { | |
1657 | ||
1658 | UART_state_bitmap = le16_to_cpu( | |
1659 | tiocmget->prev_UART_state_bitmap); | |
1660 | if (UART_state_bitmap & B_RING_SIGNAL) | |
1661 | retval |= TIOCM_RNG; | |
1662 | if (UART_state_bitmap & B_RX_CARRIER) | |
1663 | retval |= TIOCM_CD; | |
1664 | if (UART_state_bitmap & B_TX_CARRIER) | |
1665 | retval |= TIOCM_DSR; | |
1666 | } | |
1667 | spin_unlock_irq(&serial->serial_lock); | |
1668 | return retval; | |
72dc1c09 GKH |
1669 | } |
1670 | ||
20b9d177 | 1671 | static int hso_serial_tiocmset(struct tty_struct *tty, |
72dc1c09 GKH |
1672 | unsigned int set, unsigned int clear) |
1673 | { | |
1674 | int val = 0; | |
1675 | unsigned long flags; | |
1676 | int if_num; | |
30409420 | 1677 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1678 | |
1679 | /* sanity check */ | |
1680 | if (!serial) { | |
1681 | D1("no tty structures"); | |
1682 | return -EINVAL; | |
1683 | } | |
0e0367e9 JD |
1684 | |
1685 | if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM) | |
1686 | return -EINVAL; | |
1687 | ||
72dc1c09 GKH |
1688 | if_num = serial->parent->interface->altsetting->desc.bInterfaceNumber; |
1689 | ||
1690 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1691 | if (set & TIOCM_RTS) | |
1692 | serial->rts_state = 1; | |
1693 | if (set & TIOCM_DTR) | |
1694 | serial->dtr_state = 1; | |
1695 | ||
1696 | if (clear & TIOCM_RTS) | |
1697 | serial->rts_state = 0; | |
1698 | if (clear & TIOCM_DTR) | |
1699 | serial->dtr_state = 0; | |
1700 | ||
1701 | if (serial->dtr_state) | |
1702 | val |= 0x01; | |
1703 | if (serial->rts_state) | |
1704 | val |= 0x02; | |
1705 | ||
1706 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1707 | ||
1708 | return usb_control_msg(serial->parent->usb, | |
1709 | usb_rcvctrlpipe(serial->parent->usb, 0), 0x22, | |
1710 | 0x21, val, if_num, NULL, 0, | |
1711 | USB_CTRL_SET_TIMEOUT); | |
1712 | } | |
1713 | ||
6caa76b7 | 1714 | static int hso_serial_ioctl(struct tty_struct *tty, |
542f5482 DJB |
1715 | unsigned int cmd, unsigned long arg) |
1716 | { | |
30409420 | 1717 | struct hso_serial *serial = tty->driver_data; |
542f5482 DJB |
1718 | int ret = 0; |
1719 | D4("IOCTL cmd: %d, arg: %ld", cmd, arg); | |
1720 | ||
1721 | if (!serial) | |
1722 | return -ENODEV; | |
1723 | switch (cmd) { | |
1724 | case TIOCMIWAIT: | |
1725 | ret = hso_wait_modem_status(serial, arg); | |
1726 | break; | |
542f5482 DJB |
1727 | default: |
1728 | ret = -ENOIOCTLCMD; | |
1729 | break; | |
1730 | } | |
1731 | return ret; | |
1732 | } | |
1733 | ||
1734 | ||
72dc1c09 GKH |
1735 | /* starts a transmit */ |
1736 | static void hso_kick_transmit(struct hso_serial *serial) | |
1737 | { | |
1738 | u8 *temp; | |
1739 | unsigned long flags; | |
1740 | int res; | |
1741 | ||
1742 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1743 | if (!serial->tx_buffer_count) | |
1744 | goto out; | |
1745 | ||
1746 | if (serial->tx_urb_used) | |
1747 | goto out; | |
1748 | ||
1749 | /* Wakeup USB interface if necessary */ | |
1750 | if (hso_get_activity(serial->parent) == -EAGAIN) | |
1751 | goto out; | |
1752 | ||
1753 | /* Switch pointers around to avoid memcpy */ | |
1754 | temp = serial->tx_buffer; | |
1755 | serial->tx_buffer = serial->tx_data; | |
1756 | serial->tx_data = temp; | |
1757 | serial->tx_data_count = serial->tx_buffer_count; | |
1758 | serial->tx_buffer_count = 0; | |
1759 | ||
1760 | /* If temp is set, it means we switched buffers */ | |
1761 | if (temp && serial->write_data) { | |
1762 | res = serial->write_data(serial); | |
1763 | if (res >= 0) | |
1764 | serial->tx_urb_used = 1; | |
1765 | } | |
1766 | out: | |
1767 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1768 | } | |
1769 | ||
1770 | /* make a request (for reading and writing data to muxed serial port) */ | |
1771 | static int mux_device_request(struct hso_serial *serial, u8 type, u16 port, | |
1772 | struct urb *ctrl_urb, | |
1773 | struct usb_ctrlrequest *ctrl_req, | |
1774 | u8 *ctrl_urb_data, u32 size) | |
1775 | { | |
1776 | int result; | |
1777 | int pipe; | |
1778 | ||
1779 | /* Sanity check */ | |
1780 | if (!serial || !ctrl_urb || !ctrl_req) { | |
1781 | printk(KERN_ERR "%s: Wrong arguments\n", __func__); | |
1782 | return -EINVAL; | |
1783 | } | |
1784 | ||
1785 | /* initialize */ | |
1786 | ctrl_req->wValue = 0; | |
b74f62c1 DJB |
1787 | ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port)); |
1788 | ctrl_req->wLength = cpu_to_le16(size); | |
72dc1c09 GKH |
1789 | |
1790 | if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) { | |
1791 | /* Reading command */ | |
1792 | ctrl_req->bRequestType = USB_DIR_IN | | |
1793 | USB_TYPE_OPTION_VENDOR | | |
1794 | USB_RECIP_INTERFACE; | |
1795 | ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE; | |
1796 | pipe = usb_rcvctrlpipe(serial->parent->usb, 0); | |
1797 | } else { | |
1798 | /* Writing command */ | |
1799 | ctrl_req->bRequestType = USB_DIR_OUT | | |
1800 | USB_TYPE_OPTION_VENDOR | | |
1801 | USB_RECIP_INTERFACE; | |
1802 | ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND; | |
1803 | pipe = usb_sndctrlpipe(serial->parent->usb, 0); | |
1804 | } | |
1805 | /* syslog */ | |
1806 | D2("%s command (%02x) len: %d, port: %d", | |
1807 | type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write", | |
1808 | ctrl_req->bRequestType, ctrl_req->wLength, port); | |
1809 | ||
1810 | /* Load ctrl urb */ | |
1811 | ctrl_urb->transfer_flags = 0; | |
1812 | usb_fill_control_urb(ctrl_urb, | |
1813 | serial->parent->usb, | |
1814 | pipe, | |
1815 | (u8 *) ctrl_req, | |
1816 | ctrl_urb_data, size, ctrl_callback, serial); | |
1817 | /* Send it on merry way */ | |
1818 | result = usb_submit_urb(ctrl_urb, GFP_ATOMIC); | |
1819 | if (result) { | |
1820 | dev_err(&ctrl_urb->dev->dev, | |
8a5c9c49 | 1821 | "%s failed submit ctrl_urb %d type %d\n", __func__, |
72dc1c09 GKH |
1822 | result, type); |
1823 | return result; | |
1824 | } | |
1825 | ||
1826 | /* done */ | |
1827 | return size; | |
1828 | } | |
1829 | ||
1830 | /* called by intr_callback when read occurs */ | |
1831 | static int hso_mux_serial_read(struct hso_serial *serial) | |
1832 | { | |
1833 | if (!serial) | |
1834 | return -EINVAL; | |
1835 | ||
1836 | /* clean data */ | |
1837 | memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE); | |
1838 | /* make the request */ | |
1839 | ||
1840 | if (serial->num_rx_urbs != 1) { | |
1841 | dev_err(&serial->parent->interface->dev, | |
1842 | "ERROR: mux'd reads with multiple buffers " | |
1843 | "not possible\n"); | |
1844 | return 0; | |
1845 | } | |
1846 | return mux_device_request(serial, | |
1847 | USB_CDC_GET_ENCAPSULATED_RESPONSE, | |
1848 | serial->parent->port_spec & HSO_PORT_MASK, | |
1849 | serial->rx_urb[0], | |
1850 | &serial->ctrl_req_rx, | |
1851 | serial->rx_data[0], serial->rx_data_length); | |
1852 | } | |
1853 | ||
1854 | /* used for muxed serial port callback (muxed serial read) */ | |
1855 | static void intr_callback(struct urb *urb) | |
1856 | { | |
1857 | struct hso_shared_int *shared_int = urb->context; | |
1858 | struct hso_serial *serial; | |
1859 | unsigned char *port_req; | |
1860 | int status = urb->status; | |
1861 | int i; | |
1862 | ||
1863 | usb_mark_last_busy(urb->dev); | |
1864 | ||
1865 | /* sanity check */ | |
1866 | if (!shared_int) | |
1867 | return; | |
1868 | ||
1869 | /* status check */ | |
1870 | if (status) { | |
68a351c5 | 1871 | handle_usb_error(status, __func__, NULL); |
72dc1c09 GKH |
1872 | return; |
1873 | } | |
1874 | D4("\n--- Got intr callback 0x%02X ---", status); | |
1875 | ||
1876 | /* what request? */ | |
1877 | port_req = urb->transfer_buffer; | |
1878 | D4(" port_req = 0x%.2X\n", *port_req); | |
1879 | /* loop over all muxed ports to find the one sending this */ | |
1880 | for (i = 0; i < 8; i++) { | |
1881 | /* max 8 channels on MUX */ | |
1882 | if (*port_req & (1 << i)) { | |
1883 | serial = get_serial_by_shared_int_and_type(shared_int, | |
1884 | (1 << i)); | |
1885 | if (serial != NULL) { | |
1886 | D1("Pending read interrupt on port %d\n", i); | |
8ef5ba63 | 1887 | spin_lock(&serial->serial_lock); |
f4763e96 | 1888 | if (serial->rx_state == RX_IDLE && |
5ce76e77 | 1889 | serial->port.count > 0) { |
72dc1c09 GKH |
1890 | /* Setup and send a ctrl req read on |
1891 | * port i */ | |
f4763e96 | 1892 | if (!serial->rx_urb_filled[0]) { |
8ef5ba63 DJB |
1893 | serial->rx_state = RX_SENT; |
1894 | hso_mux_serial_read(serial); | |
1895 | } else | |
1896 | serial->rx_state = RX_PENDING; | |
72dc1c09 | 1897 | } else { |
f4763e96 JD |
1898 | D1("Already a read pending on " |
1899 | "port %d or port not open\n", i); | |
72dc1c09 | 1900 | } |
8ef5ba63 | 1901 | spin_unlock(&serial->serial_lock); |
72dc1c09 GKH |
1902 | } |
1903 | } | |
1904 | } | |
1905 | /* Resubmit interrupt urb */ | |
1906 | hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC); | |
1907 | } | |
1908 | ||
1909 | /* called for writing to muxed serial port */ | |
1910 | static int hso_mux_serial_write_data(struct hso_serial *serial) | |
1911 | { | |
1912 | if (NULL == serial) | |
1913 | return -EINVAL; | |
1914 | ||
1915 | return mux_device_request(serial, | |
1916 | USB_CDC_SEND_ENCAPSULATED_COMMAND, | |
1917 | serial->parent->port_spec & HSO_PORT_MASK, | |
1918 | serial->tx_urb, | |
1919 | &serial->ctrl_req_tx, | |
1920 | serial->tx_data, serial->tx_data_count); | |
1921 | } | |
1922 | ||
1923 | /* write callback for Diag and CS port */ | |
1924 | static void hso_std_serial_write_bulk_callback(struct urb *urb) | |
1925 | { | |
1926 | struct hso_serial *serial = urb->context; | |
1927 | int status = urb->status; | |
1928 | ||
1929 | /* sanity check */ | |
1930 | if (!serial) { | |
1931 | D1("serial == NULL"); | |
1932 | return; | |
1933 | } | |
1934 | ||
1935 | spin_lock(&serial->serial_lock); | |
1936 | serial->tx_urb_used = 0; | |
1937 | spin_unlock(&serial->serial_lock); | |
1938 | if (status) { | |
68a351c5 | 1939 | handle_usb_error(status, __func__, serial->parent); |
72dc1c09 GKH |
1940 | return; |
1941 | } | |
1942 | hso_put_activity(serial->parent); | |
6aad04f2 | 1943 | tty_port_tty_wakeup(&serial->port); |
72dc1c09 GKH |
1944 | hso_kick_transmit(serial); |
1945 | ||
1946 | D1(" "); | |
72dc1c09 GKH |
1947 | } |
1948 | ||
1949 | /* called for writing diag or CS serial port */ | |
1950 | static int hso_std_serial_write_data(struct hso_serial *serial) | |
1951 | { | |
1952 | int count = serial->tx_data_count; | |
1953 | int result; | |
1954 | ||
1955 | usb_fill_bulk_urb(serial->tx_urb, | |
1956 | serial->parent->usb, | |
1957 | usb_sndbulkpipe(serial->parent->usb, | |
1958 | serial->out_endp-> | |
1959 | bEndpointAddress & 0x7F), | |
1960 | serial->tx_data, serial->tx_data_count, | |
1961 | hso_std_serial_write_bulk_callback, serial); | |
1962 | ||
1963 | result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC); | |
1964 | if (result) { | |
1965 | dev_warn(&serial->parent->usb->dev, | |
1966 | "Failed to submit urb - res %d\n", result); | |
1967 | return result; | |
1968 | } | |
1969 | ||
1970 | return count; | |
1971 | } | |
1972 | ||
1973 | /* callback after read or write on muxed serial port */ | |
1974 | static void ctrl_callback(struct urb *urb) | |
1975 | { | |
1976 | struct hso_serial *serial = urb->context; | |
1977 | struct usb_ctrlrequest *req; | |
1978 | int status = urb->status; | |
1979 | ||
1980 | /* sanity check */ | |
1981 | if (!serial) | |
1982 | return; | |
1983 | ||
1984 | spin_lock(&serial->serial_lock); | |
1985 | serial->tx_urb_used = 0; | |
1986 | spin_unlock(&serial->serial_lock); | |
1987 | if (status) { | |
68a351c5 | 1988 | handle_usb_error(status, __func__, serial->parent); |
72dc1c09 GKH |
1989 | return; |
1990 | } | |
1991 | ||
1992 | /* what request? */ | |
1993 | req = (struct usb_ctrlrequest *)(urb->setup_packet); | |
1994 | D4("\n--- Got muxed ctrl callback 0x%02X ---", status); | |
1995 | D4("Actual length of urb = %d\n", urb->actual_length); | |
1996 | DUMP1(urb->transfer_buffer, urb->actual_length); | |
1997 | ||
1998 | if (req->bRequestType == | |
1999 | (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) { | |
2000 | /* response to a read command */ | |
8ef5ba63 DJB |
2001 | serial->rx_urb_filled[0] = 1; |
2002 | spin_lock(&serial->serial_lock); | |
2003 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); | |
2004 | spin_unlock(&serial->serial_lock); | |
72dc1c09 GKH |
2005 | } else { |
2006 | hso_put_activity(serial->parent); | |
6aad04f2 | 2007 | tty_port_tty_wakeup(&serial->port); |
72dc1c09 GKH |
2008 | /* response to a write command */ |
2009 | hso_kick_transmit(serial); | |
2010 | } | |
2011 | } | |
2012 | ||
2013 | /* handle RX data for serial port */ | |
8ef5ba63 | 2014 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial) |
72dc1c09 | 2015 | { |
e136e303 | 2016 | struct tty_struct *tty; |
8f9818af | 2017 | int count; |
e136e303 | 2018 | |
72dc1c09 GKH |
2019 | /* Sanity check */ |
2020 | if (urb == NULL || serial == NULL) { | |
2021 | D1("serial = NULL"); | |
8ef5ba63 | 2022 | return -2; |
72dc1c09 GKH |
2023 | } |
2024 | ||
9f8c0b08 | 2025 | tty = tty_port_tty_get(&serial->port); |
e136e303 | 2026 | |
8f9818af OS |
2027 | if (tty && test_bit(TTY_THROTTLED, &tty->flags)) { |
2028 | tty_kref_put(tty); | |
2029 | return -1; | |
2030 | } | |
2031 | ||
72dc1c09 | 2032 | /* Push data to tty */ |
2e124b4a | 2033 | D1("data to push to tty"); |
8f9818af OS |
2034 | count = tty_buffer_request_room(&serial->port, urb->actual_length); |
2035 | if (count >= urb->actual_length) { | |
2036 | tty_insert_flip_string(&serial->port, urb->transfer_buffer, | |
2037 | urb->actual_length); | |
2e124b4a | 2038 | tty_flip_buffer_push(&serial->port); |
8f9818af OS |
2039 | } else { |
2040 | dev_warn(&serial->parent->usb->dev, | |
2041 | "dropping data, %d bytes lost\n", urb->actual_length); | |
72dc1c09 | 2042 | } |
8f9818af | 2043 | |
2e124b4a JS |
2044 | tty_kref_put(tty); |
2045 | ||
8f9818af OS |
2046 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; |
2047 | ||
2048 | return 0; | |
72dc1c09 GKH |
2049 | } |
2050 | ||
8ef5ba63 | 2051 | |
72dc1c09 GKH |
2052 | /* Base driver functions */ |
2053 | ||
2054 | static void hso_log_port(struct hso_device *hso_dev) | |
2055 | { | |
2056 | char *port_type; | |
2057 | char port_dev[20]; | |
2058 | ||
2059 | switch (hso_dev->port_spec & HSO_PORT_MASK) { | |
2060 | case HSO_PORT_CONTROL: | |
2061 | port_type = "Control"; | |
2062 | break; | |
2063 | case HSO_PORT_APP: | |
2064 | port_type = "Application"; | |
2065 | break; | |
2066 | case HSO_PORT_GPS: | |
2067 | port_type = "GPS"; | |
2068 | break; | |
2069 | case HSO_PORT_GPS_CONTROL: | |
2070 | port_type = "GPS control"; | |
2071 | break; | |
2072 | case HSO_PORT_APP2: | |
2073 | port_type = "Application2"; | |
2074 | break; | |
2075 | case HSO_PORT_PCSC: | |
2076 | port_type = "PCSC"; | |
2077 | break; | |
2078 | case HSO_PORT_DIAG: | |
2079 | port_type = "Diagnostic"; | |
2080 | break; | |
2081 | case HSO_PORT_DIAG2: | |
2082 | port_type = "Diagnostic2"; | |
2083 | break; | |
2084 | case HSO_PORT_MODEM: | |
2085 | port_type = "Modem"; | |
2086 | break; | |
2087 | case HSO_PORT_NETWORK: | |
2088 | port_type = "Network"; | |
2089 | break; | |
2090 | default: | |
2091 | port_type = "Unknown"; | |
2092 | break; | |
2093 | } | |
2094 | if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { | |
2095 | sprintf(port_dev, "%s", dev2net(hso_dev)->net->name); | |
2096 | } else | |
2097 | sprintf(port_dev, "/dev/%s%d", tty_filename, | |
2098 | dev2ser(hso_dev)->minor); | |
2099 | ||
2100 | dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n", | |
2101 | port_type, port_dev); | |
2102 | } | |
2103 | ||
2104 | static int hso_start_net_device(struct hso_device *hso_dev) | |
2105 | { | |
2106 | int i, result = 0; | |
2107 | struct hso_net *hso_net = dev2net(hso_dev); | |
2108 | ||
2109 | if (!hso_net) | |
2110 | return -ENODEV; | |
2111 | ||
2112 | /* send URBs for all read buffers */ | |
2113 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2114 | ||
2115 | /* Prep a receive URB */ | |
2116 | usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i], | |
2117 | hso_dev->usb, | |
2118 | usb_rcvbulkpipe(hso_dev->usb, | |
2119 | hso_net->in_endp-> | |
2120 | bEndpointAddress & 0x7F), | |
2121 | hso_net->mux_bulk_rx_buf_pool[i], | |
2122 | MUX_BULK_RX_BUF_SIZE, read_bulk_callback, | |
2123 | hso_net); | |
2124 | ||
2125 | /* Put it out there so the device can send us stuff */ | |
2126 | result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i], | |
2127 | GFP_NOIO); | |
2128 | if (result) | |
2129 | dev_warn(&hso_dev->usb->dev, | |
2130 | "%s failed mux_bulk_rx_urb[%d] %d\n", __func__, | |
2131 | i, result); | |
2132 | } | |
2133 | ||
2134 | return result; | |
2135 | } | |
2136 | ||
2137 | static int hso_stop_net_device(struct hso_device *hso_dev) | |
2138 | { | |
2139 | int i; | |
2140 | struct hso_net *hso_net = dev2net(hso_dev); | |
2141 | ||
2142 | if (!hso_net) | |
2143 | return -ENODEV; | |
2144 | ||
2145 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2146 | if (hso_net->mux_bulk_rx_urb_pool[i]) | |
2147 | usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]); | |
2148 | ||
2149 | } | |
2150 | if (hso_net->mux_bulk_tx_urb) | |
2151 | usb_kill_urb(hso_net->mux_bulk_tx_urb); | |
2152 | ||
2153 | return 0; | |
2154 | } | |
2155 | ||
2156 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags) | |
2157 | { | |
2158 | int i, result = 0; | |
2159 | struct hso_serial *serial = dev2ser(hso_dev); | |
2160 | ||
2161 | if (!serial) | |
2162 | return -ENODEV; | |
2163 | ||
2164 | /* If it is not the MUX port fill in and submit a bulk urb (already | |
2165 | * allocated in hso_serial_start) */ | |
2166 | if (!(serial->parent->port_spec & HSO_INTF_MUX)) { | |
2167 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2168 | usb_fill_bulk_urb(serial->rx_urb[i], | |
2169 | serial->parent->usb, | |
2170 | usb_rcvbulkpipe(serial->parent->usb, | |
2171 | serial->in_endp-> | |
2172 | bEndpointAddress & | |
2173 | 0x7F), | |
2174 | serial->rx_data[i], | |
2175 | serial->rx_data_length, | |
2176 | hso_std_serial_read_bulk_callback, | |
2177 | serial); | |
2178 | result = usb_submit_urb(serial->rx_urb[i], flags); | |
2179 | if (result) { | |
2180 | dev_warn(&serial->parent->usb->dev, | |
2181 | "Failed to submit urb - res %d\n", | |
2182 | result); | |
2183 | break; | |
2184 | } | |
2185 | } | |
2186 | } else { | |
2187 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2188 | if (!serial->shared_int->use_count) { | |
2189 | result = | |
2190 | hso_mux_submit_intr_urb(serial->shared_int, | |
2191 | hso_dev->usb, flags); | |
2192 | } | |
2193 | serial->shared_int->use_count++; | |
2194 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2195 | } | |
542f5482 DJB |
2196 | if (serial->tiocmget) |
2197 | tiocmget_submit_urb(serial, | |
2198 | serial->tiocmget, | |
2199 | serial->parent->usb); | |
72dc1c09 GKH |
2200 | return result; |
2201 | } | |
2202 | ||
2203 | static int hso_stop_serial_device(struct hso_device *hso_dev) | |
2204 | { | |
2205 | int i; | |
2206 | struct hso_serial *serial = dev2ser(hso_dev); | |
542f5482 | 2207 | struct hso_tiocmget *tiocmget; |
72dc1c09 GKH |
2208 | |
2209 | if (!serial) | |
2210 | return -ENODEV; | |
2211 | ||
2212 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
8ef5ba63 | 2213 | if (serial->rx_urb[i]) { |
79927679 OS |
2214 | usb_kill_urb(serial->rx_urb[i]); |
2215 | serial->rx_urb_filled[i] = 0; | |
8ef5ba63 | 2216 | } |
72dc1c09 | 2217 | } |
8ef5ba63 | 2218 | serial->curr_rx_urb_idx = 0; |
72dc1c09 GKH |
2219 | |
2220 | if (serial->tx_urb) | |
2221 | usb_kill_urb(serial->tx_urb); | |
2222 | ||
2223 | if (serial->shared_int) { | |
2224 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2225 | if (serial->shared_int->use_count && | |
2226 | (--serial->shared_int->use_count == 0)) { | |
2227 | struct urb *urb; | |
2228 | ||
2229 | urb = serial->shared_int->shared_intr_urb; | |
2230 | if (urb) | |
2231 | usb_kill_urb(urb); | |
2232 | } | |
2233 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2234 | } | |
542f5482 DJB |
2235 | tiocmget = serial->tiocmget; |
2236 | if (tiocmget) { | |
2237 | wake_up_interruptible(&tiocmget->waitq); | |
2238 | usb_kill_urb(tiocmget->urb); | |
2239 | } | |
72dc1c09 GKH |
2240 | |
2241 | return 0; | |
2242 | } | |
2243 | ||
69b377b3 | 2244 | static void hso_serial_tty_unregister(struct hso_serial *serial) |
72dc1c09 | 2245 | { |
72dc1c09 | 2246 | tty_unregister_device(tty_drv, serial->minor); |
69b377b3 OS |
2247 | } |
2248 | ||
2249 | static void hso_serial_common_free(struct hso_serial *serial) | |
2250 | { | |
2251 | int i; | |
72dc1c09 GKH |
2252 | |
2253 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2254 | /* unlink and free RX URB */ | |
2255 | usb_free_urb(serial->rx_urb[i]); | |
2256 | /* free the RX buffer */ | |
2257 | kfree(serial->rx_data[i]); | |
2258 | } | |
2259 | ||
2260 | /* unlink and free TX URB */ | |
2261 | usb_free_urb(serial->tx_urb); | |
295fc56f | 2262 | kfree(serial->tx_buffer); |
72dc1c09 | 2263 | kfree(serial->tx_data); |
191c5f10 | 2264 | tty_port_destroy(&serial->port); |
72dc1c09 GKH |
2265 | } |
2266 | ||
2267 | static int hso_serial_common_create(struct hso_serial *serial, int num_urbs, | |
2268 | int rx_size, int tx_size) | |
2269 | { | |
2270 | struct device *dev; | |
2271 | int minor; | |
2272 | int i; | |
2273 | ||
191c5f10 JS |
2274 | tty_port_init(&serial->port); |
2275 | ||
72dc1c09 GKH |
2276 | minor = get_free_serial_index(); |
2277 | if (minor < 0) | |
2278 | goto exit; | |
2279 | ||
2280 | /* register our minor number */ | |
4134069f TI |
2281 | serial->parent->dev = tty_port_register_device_attr(&serial->port, |
2282 | tty_drv, minor, &serial->parent->interface->dev, | |
2283 | serial->parent, hso_serial_dev_groups); | |
72dc1c09 | 2284 | dev = serial->parent->dev; |
72dc1c09 GKH |
2285 | |
2286 | /* fill in specific data for later use */ | |
2287 | serial->minor = minor; | |
2288 | serial->magic = HSO_SERIAL_MAGIC; | |
2289 | spin_lock_init(&serial->serial_lock); | |
2290 | serial->num_rx_urbs = num_urbs; | |
2291 | ||
2292 | /* RX, allocate urb and initialize */ | |
2293 | ||
2294 | /* prepare our RX buffer */ | |
2295 | serial->rx_data_length = rx_size; | |
2296 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2297 | serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL); | |
2298 | if (!serial->rx_urb[i]) { | |
2299 | dev_err(dev, "Could not allocate urb?\n"); | |
2300 | goto exit; | |
2301 | } | |
2302 | serial->rx_urb[i]->transfer_buffer = NULL; | |
2303 | serial->rx_urb[i]->transfer_buffer_length = 0; | |
2304 | serial->rx_data[i] = kzalloc(serial->rx_data_length, | |
2305 | GFP_KERNEL); | |
38673c82 | 2306 | if (!serial->rx_data[i]) |
72dc1c09 | 2307 | goto exit; |
72dc1c09 GKH |
2308 | } |
2309 | ||
2310 | /* TX, allocate urb and initialize */ | |
2311 | serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2312 | if (!serial->tx_urb) { | |
2313 | dev_err(dev, "Could not allocate urb?\n"); | |
2314 | goto exit; | |
2315 | } | |
2316 | serial->tx_urb->transfer_buffer = NULL; | |
2317 | serial->tx_urb->transfer_buffer_length = 0; | |
2318 | /* prepare our TX buffer */ | |
2319 | serial->tx_data_count = 0; | |
2320 | serial->tx_buffer_count = 0; | |
2321 | serial->tx_data_length = tx_size; | |
2322 | serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL); | |
38673c82 | 2323 | if (!serial->tx_data) |
72dc1c09 | 2324 | goto exit; |
38673c82 | 2325 | |
72dc1c09 | 2326 | serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL); |
38673c82 | 2327 | if (!serial->tx_buffer) |
72dc1c09 | 2328 | goto exit; |
72dc1c09 GKH |
2329 | |
2330 | return 0; | |
2331 | exit: | |
69b377b3 | 2332 | hso_serial_tty_unregister(serial); |
72dc1c09 GKH |
2333 | hso_serial_common_free(serial); |
2334 | return -1; | |
2335 | } | |
2336 | ||
72dc1c09 GKH |
2337 | /* Creates a general hso device */ |
2338 | static struct hso_device *hso_create_device(struct usb_interface *intf, | |
2339 | int port_spec) | |
2340 | { | |
2341 | struct hso_device *hso_dev; | |
2342 | ||
2343 | hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC); | |
2344 | if (!hso_dev) | |
2345 | return NULL; | |
2346 | ||
2347 | hso_dev->port_spec = port_spec; | |
2348 | hso_dev->usb = interface_to_usbdev(intf); | |
2349 | hso_dev->interface = intf; | |
2350 | kref_init(&hso_dev->ref); | |
ab153d84 DM |
2351 | mutex_init(&hso_dev->mutex); |
2352 | ||
72dc1c09 GKH |
2353 | INIT_WORK(&hso_dev->async_get_intf, async_get_intf); |
2354 | INIT_WORK(&hso_dev->async_put_intf, async_put_intf); | |
2355 | ||
2356 | return hso_dev; | |
2357 | } | |
2358 | ||
2359 | /* Removes a network device in the network device table */ | |
2360 | static int remove_net_device(struct hso_device *hso_dev) | |
2361 | { | |
2362 | int i; | |
2363 | ||
2364 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2365 | if (network_table[i] == hso_dev) { | |
2366 | network_table[i] = NULL; | |
2367 | break; | |
2368 | } | |
2369 | } | |
2370 | if (i == HSO_MAX_NET_DEVICES) | |
2371 | return -1; | |
2372 | return 0; | |
2373 | } | |
2374 | ||
2375 | /* Frees our network device */ | |
2376 | static void hso_free_net_device(struct hso_device *hso_dev) | |
2377 | { | |
2378 | int i; | |
2379 | struct hso_net *hso_net = dev2net(hso_dev); | |
2380 | ||
2381 | if (!hso_net) | |
2382 | return; | |
2383 | ||
3b7d2b31 JD |
2384 | remove_net_device(hso_net->parent); |
2385 | ||
5e2cd082 | 2386 | if (hso_net->net) |
3b7d2b31 | 2387 | unregister_netdev(hso_net->net); |
3b7d2b31 | 2388 | |
72dc1c09 GKH |
2389 | /* start freeing */ |
2390 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2391 | usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]); | |
2392 | kfree(hso_net->mux_bulk_rx_buf_pool[i]); | |
3b7d2b31 | 2393 | hso_net->mux_bulk_rx_buf_pool[i] = NULL; |
72dc1c09 GKH |
2394 | } |
2395 | usb_free_urb(hso_net->mux_bulk_tx_urb); | |
2396 | kfree(hso_net->mux_bulk_tx_buf); | |
3b7d2b31 | 2397 | hso_net->mux_bulk_tx_buf = NULL; |
ab153d84 | 2398 | |
5e2cd082 GK |
2399 | if (hso_net->net) |
2400 | free_netdev(hso_net->net); | |
2401 | ||
e44578ea | 2402 | kfree(hso_dev); |
72dc1c09 GKH |
2403 | } |
2404 | ||
c266cb4e SH |
2405 | static const struct net_device_ops hso_netdev_ops = { |
2406 | .ndo_open = hso_net_open, | |
2407 | .ndo_stop = hso_net_close, | |
2408 | .ndo_start_xmit = hso_net_start_xmit, | |
2409 | .ndo_tx_timeout = hso_net_tx_timeout, | |
2410 | }; | |
2411 | ||
72dc1c09 GKH |
2412 | /* initialize the network interface */ |
2413 | static void hso_net_init(struct net_device *net) | |
2414 | { | |
2415 | struct hso_net *hso_net = netdev_priv(net); | |
2416 | ||
2417 | D1("sizeof hso_net is %d", (int)sizeof(*hso_net)); | |
2418 | ||
2419 | /* fill in the other fields */ | |
c266cb4e | 2420 | net->netdev_ops = &hso_netdev_ops; |
72dc1c09 GKH |
2421 | net->watchdog_timeo = HSO_NET_TX_TIMEOUT; |
2422 | net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST; | |
2423 | net->type = ARPHRD_NONE; | |
2424 | net->mtu = DEFAULT_MTU - 14; | |
2425 | net->tx_queue_len = 10; | |
7ad24ea4 | 2426 | net->ethtool_ops = &ops; |
72dc1c09 GKH |
2427 | |
2428 | /* and initialize the semaphore */ | |
2429 | spin_lock_init(&hso_net->net_lock); | |
2430 | } | |
2431 | ||
2432 | /* Adds a network device in the network device table */ | |
2433 | static int add_net_device(struct hso_device *hso_dev) | |
2434 | { | |
2435 | int i; | |
2436 | ||
2437 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2438 | if (network_table[i] == NULL) { | |
2439 | network_table[i] = hso_dev; | |
2440 | break; | |
2441 | } | |
2442 | } | |
2443 | if (i == HSO_MAX_NET_DEVICES) | |
2444 | return -1; | |
2445 | return 0; | |
2446 | } | |
2447 | ||
19d337df | 2448 | static int hso_rfkill_set_block(void *data, bool blocked) |
72dc1c09 GKH |
2449 | { |
2450 | struct hso_device *hso_dev = data; | |
19d337df | 2451 | int enabled = !blocked; |
72dc1c09 GKH |
2452 | int rv; |
2453 | ||
ab153d84 | 2454 | mutex_lock(&hso_dev->mutex); |
72dc1c09 GKH |
2455 | if (hso_dev->usb_gone) |
2456 | rv = 0; | |
2457 | else | |
2458 | rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0), | |
2459 | enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0, | |
2460 | USB_CTRL_SET_TIMEOUT); | |
ab153d84 | 2461 | mutex_unlock(&hso_dev->mutex); |
72dc1c09 GKH |
2462 | return rv; |
2463 | } | |
2464 | ||
19d337df JB |
2465 | static const struct rfkill_ops hso_rfkill_ops = { |
2466 | .set_block = hso_rfkill_set_block, | |
2467 | }; | |
2468 | ||
72dc1c09 GKH |
2469 | /* Creates and sets up everything for rfkill */ |
2470 | static void hso_create_rfkill(struct hso_device *hso_dev, | |
2471 | struct usb_interface *interface) | |
2472 | { | |
2473 | struct hso_net *hso_net = dev2net(hso_dev); | |
939a9516 | 2474 | struct device *dev = &hso_net->net->dev; |
38121067 | 2475 | static u32 rfkill_counter; |
72dc1c09 | 2476 | |
2e6d01ff | 2477 | snprintf(hso_net->name, sizeof(hso_net->name), "hso-%d", |
38121067 | 2478 | rfkill_counter++); |
19d337df | 2479 | |
2e6d01ff | 2480 | hso_net->rfkill = rfkill_alloc(hso_net->name, |
19d337df JB |
2481 | &interface_to_usbdev(interface)->dev, |
2482 | RFKILL_TYPE_WWAN, | |
2483 | &hso_rfkill_ops, hso_dev); | |
2484 | if (!hso_net->rfkill) { | |
2485 | dev_err(dev, "%s - Out of memory\n", __func__); | |
19d337df JB |
2486 | return; |
2487 | } | |
72dc1c09 | 2488 | if (rfkill_register(hso_net->rfkill) < 0) { |
19d337df | 2489 | rfkill_destroy(hso_net->rfkill); |
939a9516 JM |
2490 | hso_net->rfkill = NULL; |
2491 | dev_err(dev, "%s - Failed to register rfkill\n", __func__); | |
72dc1c09 GKH |
2492 | return; |
2493 | } | |
2494 | } | |
2495 | ||
384912ed MH |
2496 | static struct device_type hso_type = { |
2497 | .name = "wwan", | |
2498 | }; | |
2499 | ||
72dc1c09 | 2500 | /* Creates our network device */ |
0de8ca59 JD |
2501 | static struct hso_device *hso_create_net_device(struct usb_interface *interface, |
2502 | int port_spec) | |
72dc1c09 GKH |
2503 | { |
2504 | int result, i; | |
2505 | struct net_device *net; | |
2506 | struct hso_net *hso_net; | |
2507 | struct hso_device *hso_dev; | |
2508 | ||
0de8ca59 | 2509 | hso_dev = hso_create_device(interface, port_spec); |
72dc1c09 GKH |
2510 | if (!hso_dev) |
2511 | return NULL; | |
2512 | ||
2513 | /* allocate our network device, then we can put in our private data */ | |
2514 | /* call hso_net_init to do the basic initialization */ | |
c835a677 TG |
2515 | net = alloc_netdev(sizeof(struct hso_net), "hso%d", NET_NAME_UNKNOWN, |
2516 | hso_net_init); | |
72dc1c09 GKH |
2517 | if (!net) { |
2518 | dev_err(&interface->dev, "Unable to create ethernet device\n"); | |
2519 | goto exit; | |
2520 | } | |
2521 | ||
2522 | hso_net = netdev_priv(net); | |
2523 | ||
2524 | hso_dev->port_data.dev_net = hso_net; | |
2525 | hso_net->net = net; | |
2526 | hso_net->parent = hso_dev; | |
2527 | ||
2528 | hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2529 | USB_DIR_IN); | |
2530 | if (!hso_net->in_endp) { | |
2531 | dev_err(&interface->dev, "Can't find BULK IN endpoint\n"); | |
2532 | goto exit; | |
2533 | } | |
2534 | hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2535 | USB_DIR_OUT); | |
2536 | if (!hso_net->out_endp) { | |
2537 | dev_err(&interface->dev, "Can't find BULK OUT endpoint\n"); | |
2538 | goto exit; | |
2539 | } | |
2540 | SET_NETDEV_DEV(net, &interface->dev); | |
384912ed | 2541 | SET_NETDEV_DEVTYPE(net, &hso_type); |
72dc1c09 GKH |
2542 | |
2543 | /* registering our net device */ | |
2544 | result = register_netdev(net); | |
2545 | if (result) { | |
2546 | dev_err(&interface->dev, "Failed to register device\n"); | |
2547 | goto exit; | |
2548 | } | |
2549 | ||
2550 | /* start allocating */ | |
2551 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2552 | hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL); | |
2553 | if (!hso_net->mux_bulk_rx_urb_pool[i]) { | |
2554 | dev_err(&interface->dev, "Could not allocate rx urb\n"); | |
2555 | goto exit; | |
2556 | } | |
2557 | hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE, | |
2558 | GFP_KERNEL); | |
38673c82 | 2559 | if (!hso_net->mux_bulk_rx_buf_pool[i]) |
72dc1c09 | 2560 | goto exit; |
72dc1c09 GKH |
2561 | } |
2562 | hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2563 | if (!hso_net->mux_bulk_tx_urb) { | |
2564 | dev_err(&interface->dev, "Could not allocate tx urb\n"); | |
2565 | goto exit; | |
2566 | } | |
2567 | hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL); | |
38673c82 | 2568 | if (!hso_net->mux_bulk_tx_buf) |
72dc1c09 | 2569 | goto exit; |
72dc1c09 GKH |
2570 | |
2571 | add_net_device(hso_dev); | |
2572 | ||
2573 | hso_log_port(hso_dev); | |
2574 | ||
2575 | hso_create_rfkill(hso_dev, interface); | |
2576 | ||
2577 | return hso_dev; | |
2578 | exit: | |
2579 | hso_free_net_device(hso_dev); | |
2580 | return NULL; | |
2581 | } | |
2582 | ||
542f5482 DJB |
2583 | static void hso_free_tiomget(struct hso_serial *serial) |
2584 | { | |
5b89db0e JJ |
2585 | struct hso_tiocmget *tiocmget; |
2586 | if (!serial) | |
2587 | return; | |
2588 | tiocmget = serial->tiocmget; | |
542f5482 | 2589 | if (tiocmget) { |
5b89db0e JJ |
2590 | usb_free_urb(tiocmget->urb); |
2591 | tiocmget->urb = NULL; | |
542f5482 | 2592 | serial->tiocmget = NULL; |
3b7d2b31 | 2593 | kfree(tiocmget); |
542f5482 DJB |
2594 | } |
2595 | } | |
2596 | ||
72dc1c09 GKH |
2597 | /* Frees an AT channel ( goes for both mux and non-mux ) */ |
2598 | static void hso_free_serial_device(struct hso_device *hso_dev) | |
2599 | { | |
2600 | struct hso_serial *serial = dev2ser(hso_dev); | |
2601 | ||
2602 | if (!serial) | |
2603 | return; | |
72dc1c09 GKH |
2604 | |
2605 | hso_serial_common_free(serial); | |
2606 | ||
2607 | if (serial->shared_int) { | |
2608 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2609 | if (--serial->shared_int->ref_count == 0) | |
2610 | hso_free_shared_int(serial->shared_int); | |
2611 | else | |
2612 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2613 | } | |
542f5482 | 2614 | hso_free_tiomget(serial); |
72dc1c09 | 2615 | kfree(serial); |
e44578ea | 2616 | kfree(hso_dev); |
72dc1c09 GKH |
2617 | } |
2618 | ||
2619 | /* Creates a bulk AT channel */ | |
2620 | static struct hso_device *hso_create_bulk_serial_device( | |
2621 | struct usb_interface *interface, int port) | |
2622 | { | |
2623 | struct hso_device *hso_dev; | |
2624 | struct hso_serial *serial; | |
2625 | int num_urbs; | |
542f5482 | 2626 | struct hso_tiocmget *tiocmget; |
72dc1c09 GKH |
2627 | |
2628 | hso_dev = hso_create_device(interface, port); | |
2629 | if (!hso_dev) | |
2630 | return NULL; | |
2631 | ||
2632 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); | |
2633 | if (!serial) | |
2634 | goto exit; | |
2635 | ||
2636 | serial->parent = hso_dev; | |
2637 | hso_dev->port_data.dev_serial = serial; | |
2638 | ||
58eb17f1 | 2639 | if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) { |
72dc1c09 | 2640 | num_urbs = 2; |
542f5482 DJB |
2641 | serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget), |
2642 | GFP_KERNEL); | |
2643 | /* it isn't going to break our heart if serial->tiocmget | |
2644 | * allocation fails don't bother checking this. | |
2645 | */ | |
2646 | if (serial->tiocmget) { | |
2647 | tiocmget = serial->tiocmget; | |
2648 | tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL); | |
2649 | if (tiocmget->urb) { | |
2650 | mutex_init(&tiocmget->mutex); | |
2651 | init_waitqueue_head(&tiocmget->waitq); | |
2652 | tiocmget->endp = hso_get_ep( | |
2653 | interface, | |
2654 | USB_ENDPOINT_XFER_INT, | |
2655 | USB_DIR_IN); | |
2656 | } else | |
2657 | hso_free_tiomget(serial); | |
2658 | } | |
2659 | } | |
72dc1c09 GKH |
2660 | else |
2661 | num_urbs = 1; | |
2662 | ||
2663 | if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE, | |
2664 | BULK_URB_TX_SIZE)) | |
2665 | goto exit; | |
2666 | ||
2667 | serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2668 | USB_DIR_IN); | |
2669 | if (!serial->in_endp) { | |
2670 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); | |
e57b641d | 2671 | goto exit2; |
72dc1c09 GKH |
2672 | } |
2673 | ||
2674 | if (! | |
2675 | (serial->out_endp = | |
2676 | hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) { | |
2677 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); | |
e57b641d | 2678 | goto exit2; |
72dc1c09 GKH |
2679 | } |
2680 | ||
2681 | serial->write_data = hso_std_serial_write_data; | |
2682 | ||
2683 | /* and record this serial */ | |
2684 | set_serial_by_index(serial->minor, serial); | |
2685 | ||
2686 | /* setup the proc dirs and files if needed */ | |
2687 | hso_log_port(hso_dev); | |
2688 | ||
2689 | /* done, return it */ | |
2690 | return hso_dev; | |
e57b641d AB |
2691 | |
2692 | exit2: | |
69b377b3 | 2693 | hso_serial_tty_unregister(serial); |
e57b641d | 2694 | hso_serial_common_free(serial); |
72dc1c09 | 2695 | exit: |
542f5482 | 2696 | hso_free_tiomget(serial); |
72dc1c09 | 2697 | kfree(serial); |
e44578ea | 2698 | kfree(hso_dev); |
72dc1c09 GKH |
2699 | return NULL; |
2700 | } | |
2701 | ||
2702 | /* Creates a multiplexed AT channel */ | |
2703 | static | |
2704 | struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface, | |
2705 | int port, | |
2706 | struct hso_shared_int *mux) | |
2707 | { | |
2708 | struct hso_device *hso_dev; | |
2709 | struct hso_serial *serial; | |
2710 | int port_spec; | |
2711 | ||
2712 | port_spec = HSO_INTF_MUX; | |
2713 | port_spec &= ~HSO_PORT_MASK; | |
2714 | ||
2715 | port_spec |= hso_mux_to_port(port); | |
2716 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT) | |
2717 | return NULL; | |
2718 | ||
2719 | hso_dev = hso_create_device(interface, port_spec); | |
2720 | if (!hso_dev) | |
2721 | return NULL; | |
2722 | ||
2723 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); | |
2724 | if (!serial) | |
2725 | goto exit; | |
2726 | ||
2727 | hso_dev->port_data.dev_serial = serial; | |
2728 | serial->parent = hso_dev; | |
2729 | ||
2730 | if (hso_serial_common_create | |
2731 | (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE)) | |
2732 | goto exit; | |
2733 | ||
2734 | serial->tx_data_length--; | |
2735 | serial->write_data = hso_mux_serial_write_data; | |
2736 | ||
2737 | serial->shared_int = mux; | |
2738 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2739 | serial->shared_int->ref_count++; | |
2740 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2741 | ||
2742 | /* and record this serial */ | |
2743 | set_serial_by_index(serial->minor, serial); | |
2744 | ||
2745 | /* setup the proc dirs and files if needed */ | |
2746 | hso_log_port(hso_dev); | |
2747 | ||
2748 | /* done, return it */ | |
2749 | return hso_dev; | |
2750 | ||
2751 | exit: | |
2752 | if (serial) { | |
2753 | tty_unregister_device(tty_drv, serial->minor); | |
2754 | kfree(serial); | |
2755 | } | |
91ecee68 | 2756 | kfree(hso_dev); |
72dc1c09 GKH |
2757 | return NULL; |
2758 | ||
2759 | } | |
2760 | ||
2761 | static void hso_free_shared_int(struct hso_shared_int *mux) | |
2762 | { | |
2763 | usb_free_urb(mux->shared_intr_urb); | |
2764 | kfree(mux->shared_intr_buf); | |
2765 | mutex_unlock(&mux->shared_int_lock); | |
2766 | kfree(mux); | |
2767 | } | |
2768 | ||
2769 | static | |
2770 | struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface) | |
2771 | { | |
2772 | struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL); | |
2773 | ||
2774 | if (!mux) | |
2775 | return NULL; | |
2776 | ||
2777 | mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT, | |
2778 | USB_DIR_IN); | |
2779 | if (!mux->intr_endp) { | |
2780 | dev_err(&interface->dev, "Can't find INT IN endpoint\n"); | |
2781 | goto exit; | |
2782 | } | |
2783 | ||
2784 | mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2785 | if (!mux->shared_intr_urb) { | |
8a5c9c49 | 2786 | dev_err(&interface->dev, "Could not allocate intr urb?\n"); |
72dc1c09 GKH |
2787 | goto exit; |
2788 | } | |
d9ced80d JD |
2789 | mux->shared_intr_buf = |
2790 | kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize), | |
2791 | GFP_KERNEL); | |
38673c82 | 2792 | if (!mux->shared_intr_buf) |
72dc1c09 | 2793 | goto exit; |
72dc1c09 GKH |
2794 | |
2795 | mutex_init(&mux->shared_int_lock); | |
2796 | ||
2797 | return mux; | |
2798 | ||
2799 | exit: | |
2800 | kfree(mux->shared_intr_buf); | |
2801 | usb_free_urb(mux->shared_intr_urb); | |
2802 | kfree(mux); | |
2803 | return NULL; | |
2804 | } | |
2805 | ||
2806 | /* Gets the port spec for a certain interface */ | |
2807 | static int hso_get_config_data(struct usb_interface *interface) | |
2808 | { | |
2809 | struct usb_device *usbdev = interface_to_usbdev(interface); | |
e75dc677 | 2810 | u8 *config_data = kmalloc(17, GFP_KERNEL); |
72dc1c09 GKH |
2811 | u32 if_num = interface->altsetting->desc.bInterfaceNumber; |
2812 | s32 result; | |
2813 | ||
e75dc677 DG |
2814 | if (!config_data) |
2815 | return -ENOMEM; | |
72dc1c09 GKH |
2816 | if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), |
2817 | 0x86, 0xC0, 0, 0, config_data, 17, | |
2818 | USB_CTRL_SET_TIMEOUT) != 0x11) { | |
e75dc677 | 2819 | kfree(config_data); |
72dc1c09 GKH |
2820 | return -EIO; |
2821 | } | |
2822 | ||
2823 | switch (config_data[if_num]) { | |
2824 | case 0x0: | |
2825 | result = 0; | |
2826 | break; | |
2827 | case 0x1: | |
2828 | result = HSO_PORT_DIAG; | |
2829 | break; | |
2830 | case 0x2: | |
2831 | result = HSO_PORT_GPS; | |
2832 | break; | |
2833 | case 0x3: | |
2834 | result = HSO_PORT_GPS_CONTROL; | |
2835 | break; | |
2836 | case 0x4: | |
2837 | result = HSO_PORT_APP; | |
2838 | break; | |
2839 | case 0x5: | |
2840 | result = HSO_PORT_APP2; | |
2841 | break; | |
2842 | case 0x6: | |
2843 | result = HSO_PORT_CONTROL; | |
2844 | break; | |
2845 | case 0x7: | |
2846 | result = HSO_PORT_NETWORK; | |
2847 | break; | |
2848 | case 0x8: | |
2849 | result = HSO_PORT_MODEM; | |
2850 | break; | |
2851 | case 0x9: | |
2852 | result = HSO_PORT_MSD; | |
2853 | break; | |
2854 | case 0xa: | |
2855 | result = HSO_PORT_PCSC; | |
2856 | break; | |
2857 | case 0xb: | |
2858 | result = HSO_PORT_VOICE; | |
2859 | break; | |
2860 | default: | |
2861 | result = 0; | |
2862 | } | |
2863 | ||
2864 | if (result) | |
2865 | result |= HSO_INTF_BULK; | |
2866 | ||
2867 | if (config_data[16] & 0x1) | |
2868 | result |= HSO_INFO_CRC_BUG; | |
2869 | ||
e75dc677 | 2870 | kfree(config_data); |
72dc1c09 GKH |
2871 | return result; |
2872 | } | |
2873 | ||
2874 | /* called once for each interface upon device insertion */ | |
2875 | static int hso_probe(struct usb_interface *interface, | |
2876 | const struct usb_device_id *id) | |
2877 | { | |
2878 | int mux, i, if_num, port_spec; | |
2879 | unsigned char port_mask; | |
2880 | struct hso_device *hso_dev = NULL; | |
2881 | struct hso_shared_int *shared_int; | |
2882 | struct hso_device *tmp_dev = NULL; | |
2883 | ||
35e57e1b DG |
2884 | if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) { |
2885 | dev_err(&interface->dev, "Not our interface\n"); | |
2886 | return -ENODEV; | |
2887 | } | |
2888 | ||
72dc1c09 GKH |
2889 | if_num = interface->altsetting->desc.bInterfaceNumber; |
2890 | ||
2891 | /* Get the interface/port specification from either driver_info or from | |
2892 | * the device itself */ | |
2893 | if (id->driver_info) | |
2894 | port_spec = ((u32 *)(id->driver_info))[if_num]; | |
2895 | else | |
2896 | port_spec = hso_get_config_data(interface); | |
2897 | ||
72dc1c09 GKH |
2898 | /* Check if we need to switch to alt interfaces prior to port |
2899 | * configuration */ | |
2900 | if (interface->num_altsetting > 1) | |
2901 | usb_set_interface(interface_to_usbdev(interface), if_num, 1); | |
2902 | interface->needs_remote_wakeup = 1; | |
2903 | ||
2904 | /* Allocate new hso device(s) */ | |
2905 | switch (port_spec & HSO_INTF_MASK) { | |
2906 | case HSO_INTF_MUX: | |
2907 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { | |
2908 | /* Create the network device */ | |
2909 | if (!disable_net) { | |
0de8ca59 JD |
2910 | hso_dev = hso_create_net_device(interface, |
2911 | port_spec); | |
72dc1c09 GKH |
2912 | if (!hso_dev) |
2913 | goto exit; | |
2914 | tmp_dev = hso_dev; | |
2915 | } | |
2916 | } | |
2917 | ||
2918 | if (hso_get_mux_ports(interface, &port_mask)) | |
2919 | /* TODO: de-allocate everything */ | |
2920 | goto exit; | |
2921 | ||
2922 | shared_int = hso_create_shared_int(interface); | |
2923 | if (!shared_int) | |
2924 | goto exit; | |
2925 | ||
2926 | for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) { | |
2927 | if (port_mask & i) { | |
2928 | hso_dev = hso_create_mux_serial_device( | |
2929 | interface, i, shared_int); | |
2930 | if (!hso_dev) | |
2931 | goto exit; | |
2932 | } | |
2933 | } | |
2934 | ||
2935 | if (tmp_dev) | |
2936 | hso_dev = tmp_dev; | |
2937 | break; | |
2938 | ||
2939 | case HSO_INTF_BULK: | |
2940 | /* It's a regular bulk interface */ | |
8e65c0ec FA |
2941 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { |
2942 | if (!disable_net) | |
2943 | hso_dev = | |
2944 | hso_create_net_device(interface, port_spec); | |
2945 | } else { | |
72dc1c09 GKH |
2946 | hso_dev = |
2947 | hso_create_bulk_serial_device(interface, port_spec); | |
8e65c0ec | 2948 | } |
72dc1c09 GKH |
2949 | if (!hso_dev) |
2950 | goto exit; | |
2951 | break; | |
2952 | default: | |
2953 | goto exit; | |
2954 | } | |
2955 | ||
72dc1c09 GKH |
2956 | /* save our data pointer in this device */ |
2957 | usb_set_intfdata(interface, hso_dev); | |
2958 | ||
2959 | /* done */ | |
2960 | return 0; | |
2961 | exit: | |
2962 | hso_free_interface(interface); | |
2963 | return -ENODEV; | |
2964 | } | |
2965 | ||
2966 | /* device removed, cleaning up */ | |
2967 | static void hso_disconnect(struct usb_interface *interface) | |
2968 | { | |
2969 | hso_free_interface(interface); | |
2970 | ||
2971 | /* remove reference of our private data */ | |
2972 | usb_set_intfdata(interface, NULL); | |
72dc1c09 GKH |
2973 | } |
2974 | ||
2975 | static void async_get_intf(struct work_struct *data) | |
2976 | { | |
2977 | struct hso_device *hso_dev = | |
2978 | container_of(data, struct hso_device, async_get_intf); | |
2979 | usb_autopm_get_interface(hso_dev->interface); | |
2980 | } | |
2981 | ||
2982 | static void async_put_intf(struct work_struct *data) | |
2983 | { | |
2984 | struct hso_device *hso_dev = | |
2985 | container_of(data, struct hso_device, async_put_intf); | |
2986 | usb_autopm_put_interface(hso_dev->interface); | |
2987 | } | |
2988 | ||
2989 | static int hso_get_activity(struct hso_device *hso_dev) | |
2990 | { | |
2991 | if (hso_dev->usb->state == USB_STATE_SUSPENDED) { | |
2992 | if (!hso_dev->is_active) { | |
2993 | hso_dev->is_active = 1; | |
2994 | schedule_work(&hso_dev->async_get_intf); | |
2995 | } | |
2996 | } | |
2997 | ||
2998 | if (hso_dev->usb->state != USB_STATE_CONFIGURED) | |
2999 | return -EAGAIN; | |
3000 | ||
3001 | usb_mark_last_busy(hso_dev->usb); | |
3002 | ||
3003 | return 0; | |
3004 | } | |
3005 | ||
3006 | static int hso_put_activity(struct hso_device *hso_dev) | |
3007 | { | |
3008 | if (hso_dev->usb->state != USB_STATE_SUSPENDED) { | |
3009 | if (hso_dev->is_active) { | |
3010 | hso_dev->is_active = 0; | |
3011 | schedule_work(&hso_dev->async_put_intf); | |
3012 | return -EAGAIN; | |
3013 | } | |
3014 | } | |
3015 | hso_dev->is_active = 0; | |
3016 | return 0; | |
3017 | } | |
3018 | ||
3019 | /* called by kernel when we need to suspend device */ | |
3020 | static int hso_suspend(struct usb_interface *iface, pm_message_t message) | |
3021 | { | |
3022 | int i, result; | |
3023 | ||
3024 | /* Stop all serial ports */ | |
3025 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
3026 | if (serial_table[i] && (serial_table[i]->interface == iface)) { | |
3027 | result = hso_stop_serial_device(serial_table[i]); | |
3028 | if (result) | |
3029 | goto out; | |
3030 | } | |
3031 | } | |
3032 | ||
3033 | /* Stop all network ports */ | |
3034 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
3035 | if (network_table[i] && | |
3036 | (network_table[i]->interface == iface)) { | |
3037 | result = hso_stop_net_device(network_table[i]); | |
3038 | if (result) | |
3039 | goto out; | |
3040 | } | |
3041 | } | |
3042 | ||
3043 | out: | |
3044 | return 0; | |
3045 | } | |
3046 | ||
3047 | /* called by kernel when we need to resume device */ | |
3048 | static int hso_resume(struct usb_interface *iface) | |
3049 | { | |
3050 | int i, result = 0; | |
3051 | struct hso_net *hso_net; | |
3052 | ||
3053 | /* Start all serial ports */ | |
3054 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
3055 | if (serial_table[i] && (serial_table[i]->interface == iface)) { | |
5ce76e77 | 3056 | if (dev2ser(serial_table[i])->port.count) { |
72dc1c09 GKH |
3057 | result = |
3058 | hso_start_serial_device(serial_table[i], GFP_NOIO); | |
3059 | hso_kick_transmit(dev2ser(serial_table[i])); | |
3060 | if (result) | |
3061 | goto out; | |
3062 | } | |
3063 | } | |
3064 | } | |
3065 | ||
3066 | /* Start all network ports */ | |
3067 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
3068 | if (network_table[i] && | |
3069 | (network_table[i]->interface == iface)) { | |
3070 | hso_net = dev2net(network_table[i]); | |
89930b7b DJB |
3071 | if (hso_net->flags & IFF_UP) { |
3072 | /* First transmit any lingering data, | |
3073 | then restart the device. */ | |
3074 | if (hso_net->skb_tx_buf) { | |
3075 | dev_dbg(&iface->dev, | |
3076 | "Transmitting" | |
3077 | " lingering data\n"); | |
3078 | hso_net_start_xmit(hso_net->skb_tx_buf, | |
3079 | hso_net->net); | |
3080 | hso_net->skb_tx_buf = NULL; | |
3081 | } | |
3082 | result = hso_start_net_device(network_table[i]); | |
3083 | if (result) | |
3084 | goto out; | |
72dc1c09 | 3085 | } |
72dc1c09 GKH |
3086 | } |
3087 | } | |
3088 | ||
3089 | out: | |
3090 | return result; | |
3091 | } | |
3092 | ||
3093 | static void hso_serial_ref_free(struct kref *ref) | |
3094 | { | |
3095 | struct hso_device *hso_dev = container_of(ref, struct hso_device, ref); | |
3096 | ||
3097 | hso_free_serial_device(hso_dev); | |
3098 | } | |
3099 | ||
3100 | static void hso_free_interface(struct usb_interface *interface) | |
3101 | { | |
f6516b69 | 3102 | struct hso_serial *serial; |
72dc1c09 GKH |
3103 | int i; |
3104 | ||
3105 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
8e95a202 JP |
3106 | if (serial_table[i] && |
3107 | (serial_table[i]->interface == interface)) { | |
f6516b69 OS |
3108 | serial = dev2ser(serial_table[i]); |
3109 | tty_port_tty_hangup(&serial->port, false); | |
3110 | mutex_lock(&serial->parent->mutex); | |
3111 | serial->parent->usb_gone = 1; | |
3112 | mutex_unlock(&serial->parent->mutex); | |
cc491970 OS |
3113 | cancel_work_sync(&serial_table[i]->async_put_intf); |
3114 | cancel_work_sync(&serial_table[i]->async_get_intf); | |
69b377b3 | 3115 | hso_serial_tty_unregister(serial); |
ab153d84 | 3116 | kref_put(&serial_table[i]->ref, hso_serial_ref_free); |
301d3b7e | 3117 | set_serial_by_index(i, NULL); |
72dc1c09 GKH |
3118 | } |
3119 | } | |
3120 | ||
3121 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
8e95a202 JP |
3122 | if (network_table[i] && |
3123 | (network_table[i]->interface == interface)) { | |
72dc1c09 GKH |
3124 | struct rfkill *rfk = dev2net(network_table[i])->rfkill; |
3125 | /* hso_stop_net_device doesn't stop the net queue since | |
3126 | * traffic needs to start it again when suspended */ | |
3127 | netif_stop_queue(dev2net(network_table[i])->net); | |
3128 | hso_stop_net_device(network_table[i]); | |
3129 | cancel_work_sync(&network_table[i]->async_put_intf); | |
3130 | cancel_work_sync(&network_table[i]->async_get_intf); | |
19d337df | 3131 | if (rfk) { |
72dc1c09 | 3132 | rfkill_unregister(rfk); |
19d337df JB |
3133 | rfkill_destroy(rfk); |
3134 | } | |
72dc1c09 GKH |
3135 | hso_free_net_device(network_table[i]); |
3136 | } | |
3137 | } | |
3138 | } | |
3139 | ||
3140 | /* Helper functions */ | |
3141 | ||
3142 | /* Get the endpoint ! */ | |
3143 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, | |
3144 | int type, int dir) | |
3145 | { | |
3146 | int i; | |
3147 | struct usb_host_interface *iface = intf->cur_altsetting; | |
3148 | struct usb_endpoint_descriptor *endp; | |
3149 | ||
3150 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { | |
3151 | endp = &iface->endpoint[i].desc; | |
3152 | if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) && | |
f201a8a4 | 3153 | (usb_endpoint_type(endp) == type)) |
72dc1c09 GKH |
3154 | return endp; |
3155 | } | |
3156 | ||
3157 | return NULL; | |
3158 | } | |
3159 | ||
3160 | /* Get the byte that describes which ports are enabled */ | |
3161 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports) | |
3162 | { | |
3163 | int i; | |
3164 | struct usb_host_interface *iface = intf->cur_altsetting; | |
3165 | ||
3166 | if (iface->extralen == 3) { | |
3167 | *ports = iface->extra[2]; | |
3168 | return 0; | |
3169 | } | |
3170 | ||
3171 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { | |
3172 | if (iface->endpoint[i].extralen == 3) { | |
3173 | *ports = iface->endpoint[i].extra[2]; | |
3174 | return 0; | |
3175 | } | |
3176 | } | |
3177 | ||
3178 | return -1; | |
3179 | } | |
3180 | ||
3181 | /* interrupt urb needs to be submitted, used for serial read of muxed port */ | |
3182 | static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int, | |
3183 | struct usb_device *usb, gfp_t gfp) | |
3184 | { | |
3185 | int result; | |
3186 | ||
3187 | usb_fill_int_urb(shared_int->shared_intr_urb, usb, | |
3188 | usb_rcvintpipe(usb, | |
3189 | shared_int->intr_endp->bEndpointAddress & 0x7F), | |
3190 | shared_int->shared_intr_buf, | |
d9ced80d | 3191 | 1, |
72dc1c09 GKH |
3192 | intr_callback, shared_int, |
3193 | shared_int->intr_endp->bInterval); | |
3194 | ||
3195 | result = usb_submit_urb(shared_int->shared_intr_urb, gfp); | |
3196 | if (result) | |
8a5c9c49 | 3197 | dev_warn(&usb->dev, "%s failed mux_intr_urb %d\n", __func__, |
72dc1c09 GKH |
3198 | result); |
3199 | ||
3200 | return result; | |
3201 | } | |
3202 | ||
3203 | /* operations setup of the serial interface */ | |
6c59f569 | 3204 | static const struct tty_operations hso_serial_ops = { |
72dc1c09 GKH |
3205 | .open = hso_serial_open, |
3206 | .close = hso_serial_close, | |
3207 | .write = hso_serial_write, | |
3208 | .write_room = hso_serial_write_room, | |
29bd3bc1 | 3209 | .cleanup = hso_serial_cleanup, |
542f5482 | 3210 | .ioctl = hso_serial_ioctl, |
72dc1c09 GKH |
3211 | .set_termios = hso_serial_set_termios, |
3212 | .chars_in_buffer = hso_serial_chars_in_buffer, | |
3213 | .tiocmget = hso_serial_tiocmget, | |
3214 | .tiocmset = hso_serial_tiocmset, | |
0bca1b91 | 3215 | .get_icount = hso_get_count, |
8ef5ba63 | 3216 | .unthrottle = hso_unthrottle |
72dc1c09 GKH |
3217 | }; |
3218 | ||
3219 | static struct usb_driver hso_driver = { | |
3220 | .name = driver_name, | |
3221 | .probe = hso_probe, | |
3222 | .disconnect = hso_disconnect, | |
3223 | .id_table = hso_ids, | |
3224 | .suspend = hso_suspend, | |
3225 | .resume = hso_resume, | |
9c8f92ae | 3226 | .reset_resume = hso_resume, |
72dc1c09 | 3227 | .supports_autosuspend = 1, |
e1f12eb6 | 3228 | .disable_hub_initiated_lpm = 1, |
72dc1c09 GKH |
3229 | }; |
3230 | ||
3231 | static int __init hso_init(void) | |
3232 | { | |
3233 | int i; | |
3234 | int result; | |
3235 | ||
3236 | /* put it in the log */ | |
3237 | printk(KERN_INFO "hso: %s\n", version); | |
3238 | ||
3239 | /* Initialise the serial table semaphore and table */ | |
3240 | spin_lock_init(&serial_table_lock); | |
3241 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) | |
3242 | serial_table[i] = NULL; | |
3243 | ||
3244 | /* allocate our driver using the proper amount of supported minors */ | |
3245 | tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS); | |
3246 | if (!tty_drv) | |
3247 | return -ENOMEM; | |
3248 | ||
3249 | /* fill in all needed values */ | |
72dc1c09 GKH |
3250 | tty_drv->driver_name = driver_name; |
3251 | tty_drv->name = tty_filename; | |
3252 | ||
3253 | /* if major number is provided as parameter, use that one */ | |
3254 | if (tty_major) | |
3255 | tty_drv->major = tty_major; | |
3256 | ||
3257 | tty_drv->minor_start = 0; | |
72dc1c09 GKH |
3258 | tty_drv->type = TTY_DRIVER_TYPE_SERIAL; |
3259 | tty_drv->subtype = SERIAL_TYPE_NORMAL; | |
3260 | tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; | |
3261 | tty_drv->init_termios = tty_std_termios; | |
ac9720c3 | 3262 | hso_init_termios(&tty_drv->init_termios); |
72dc1c09 GKH |
3263 | tty_set_operations(tty_drv, &hso_serial_ops); |
3264 | ||
3265 | /* register the tty driver */ | |
3266 | result = tty_register_driver(tty_drv); | |
3267 | if (result) { | |
3268 | printk(KERN_ERR "%s - tty_register_driver failed(%d)\n", | |
3269 | __func__, result); | |
d230788f | 3270 | goto err_free_tty; |
72dc1c09 GKH |
3271 | } |
3272 | ||
3273 | /* register this module as an usb driver */ | |
3274 | result = usb_register(&hso_driver); | |
3275 | if (result) { | |
3276 | printk(KERN_ERR "Could not register hso driver? error: %d\n", | |
3277 | result); | |
d230788f | 3278 | goto err_unreg_tty; |
72dc1c09 GKH |
3279 | } |
3280 | ||
3281 | /* done */ | |
3282 | return 0; | |
d230788f JS |
3283 | err_unreg_tty: |
3284 | tty_unregister_driver(tty_drv); | |
3285 | err_free_tty: | |
3286 | put_tty_driver(tty_drv); | |
3287 | return result; | |
72dc1c09 GKH |
3288 | } |
3289 | ||
3290 | static void __exit hso_exit(void) | |
3291 | { | |
3292 | printk(KERN_INFO "hso: unloaded\n"); | |
3293 | ||
3294 | tty_unregister_driver(tty_drv); | |
d230788f | 3295 | put_tty_driver(tty_drv); |
72dc1c09 GKH |
3296 | /* deregister the usb driver */ |
3297 | usb_deregister(&hso_driver); | |
3298 | } | |
3299 | ||
3300 | /* Module definitions */ | |
3301 | module_init(hso_init); | |
3302 | module_exit(hso_exit); | |
3303 | ||
3304 | MODULE_AUTHOR(MOD_AUTHOR); | |
3305 | MODULE_DESCRIPTION(MOD_DESCRIPTION); | |
3306 | MODULE_LICENSE(MOD_LICENSE); | |
72dc1c09 GKH |
3307 | |
3308 | /* change the debug level (eg: insmod hso.ko debug=0x04) */ | |
3309 | MODULE_PARM_DESC(debug, "Level of debug [0x01 | 0x02 | 0x04 | 0x08 | 0x10]"); | |
3310 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
3311 | ||
3312 | /* set the major tty number (eg: insmod hso.ko tty_major=245) */ | |
3313 | MODULE_PARM_DESC(tty_major, "Set the major tty number"); | |
3314 | module_param(tty_major, int, S_IRUGO | S_IWUSR); | |
3315 | ||
3316 | /* disable network interface (eg: insmod hso.ko disable_net=1) */ | |
3317 | MODULE_PARM_DESC(disable_net, "Disable the network interface"); | |
3318 | module_param(disable_net, int, S_IRUGO | S_IWUSR); |