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Commit | Line | Data |
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72dc1c09 GKH |
1 | /****************************************************************************** |
2 | * | |
3 | * Driver for Option High Speed Mobile Devices. | |
4 | * | |
5 | * Copyright (C) 2008 Option International | |
11cd29b0 DJB |
6 | * Filip Aben <f.aben@option.com> |
7 | * Denis Joseph Barrow <d.barow@option.com> | |
3b7d2b31 | 8 | * Jan Dumon <j.dumon@option.com> |
72dc1c09 GKH |
9 | * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd) |
10 | * <ajb@spheresystems.co.uk> | |
11 | * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de> | |
12 | * Copyright (C) 2008 Novell, Inc. | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License version 2 as | |
16 | * published by the Free Software Foundation. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, | |
26 | * USA | |
27 | * | |
28 | * | |
29 | *****************************************************************************/ | |
30 | ||
31 | /****************************************************************************** | |
32 | * | |
33 | * Description of the device: | |
34 | * | |
35 | * Interface 0: Contains the IP network interface on the bulk end points. | |
36 | * The multiplexed serial ports are using the interrupt and | |
37 | * control endpoints. | |
38 | * Interrupt contains a bitmap telling which multiplexed | |
39 | * serialport needs servicing. | |
40 | * | |
41 | * Interface 1: Diagnostics port, uses bulk only, do not submit urbs until the | |
42 | * port is opened, as this have a huge impact on the network port | |
43 | * throughput. | |
44 | * | |
542f5482 DJB |
45 | * Interface 2: Standard modem interface - circuit switched interface, this |
46 | * can be used to make a standard ppp connection however it | |
47 | * should not be used in conjunction with the IP network interface | |
48 | * enabled for USB performance reasons i.e. if using this set | |
49 | * ideally disable_net=1. | |
72dc1c09 GKH |
50 | * |
51 | *****************************************************************************/ | |
52 | ||
3981cce6 JP |
53 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
54 | ||
174cd4b1 | 55 | #include <linux/sched/signal.h> |
72dc1c09 GKH |
56 | #include <linux/slab.h> |
57 | #include <linux/init.h> | |
58 | #include <linux/delay.h> | |
59 | #include <linux/netdevice.h> | |
60 | #include <linux/module.h> | |
61 | #include <linux/ethtool.h> | |
62 | #include <linux/usb.h> | |
72dc1c09 GKH |
63 | #include <linux/tty.h> |
64 | #include <linux/tty_driver.h> | |
65 | #include <linux/tty_flip.h> | |
66 | #include <linux/kmod.h> | |
67 | #include <linux/rfkill.h> | |
68 | #include <linux/ip.h> | |
69 | #include <linux/uaccess.h> | |
70 | #include <linux/usb/cdc.h> | |
71 | #include <net/arp.h> | |
72 | #include <asm/byteorder.h> | |
542f5482 DJB |
73 | #include <linux/serial_core.h> |
74 | #include <linux/serial.h> | |
72dc1c09 GKH |
75 | |
76 | ||
72dc1c09 GKH |
77 | #define MOD_AUTHOR "Option Wireless" |
78 | #define MOD_DESCRIPTION "USB High Speed Option driver" | |
79 | #define MOD_LICENSE "GPL" | |
80 | ||
81 | #define HSO_MAX_NET_DEVICES 10 | |
82 | #define HSO__MAX_MTU 2048 | |
83 | #define DEFAULT_MTU 1500 | |
84 | #define DEFAULT_MRU 1500 | |
85 | ||
86 | #define CTRL_URB_RX_SIZE 1024 | |
87 | #define CTRL_URB_TX_SIZE 64 | |
88 | ||
89 | #define BULK_URB_RX_SIZE 4096 | |
90 | #define BULK_URB_TX_SIZE 8192 | |
91 | ||
92 | #define MUX_BULK_RX_BUF_SIZE HSO__MAX_MTU | |
93 | #define MUX_BULK_TX_BUF_SIZE HSO__MAX_MTU | |
94 | #define MUX_BULK_RX_BUF_COUNT 4 | |
95 | #define USB_TYPE_OPTION_VENDOR 0x20 | |
96 | ||
97 | /* These definitions are used with the struct hso_net flags element */ | |
98 | /* - use *_bit operations on it. (bit indices not values.) */ | |
99 | #define HSO_NET_RUNNING 0 | |
100 | ||
101 | #define HSO_NET_TX_TIMEOUT (HZ*10) | |
102 | ||
72dc1c09 GKH |
103 | #define HSO_SERIAL_MAGIC 0x48534f31 |
104 | ||
105 | /* Number of ttys to handle */ | |
106 | #define HSO_SERIAL_TTY_MINORS 256 | |
107 | ||
108 | #define MAX_RX_URBS 2 | |
109 | ||
72dc1c09 GKH |
110 | /*****************************************************************************/ |
111 | /* Debugging functions */ | |
112 | /*****************************************************************************/ | |
95a69117 JP |
113 | #define hso_dbg(lvl, fmt, ...) \ |
114 | do { \ | |
115 | if ((lvl) & debug) \ | |
116 | pr_info("[%d:%s] " fmt, \ | |
117 | __LINE__, __func__, ##__VA_ARGS__); \ | |
118 | } while (0) | |
72dc1c09 GKH |
119 | |
120 | /*****************************************************************************/ | |
121 | /* Enumerators */ | |
122 | /*****************************************************************************/ | |
123 | enum pkt_parse_state { | |
124 | WAIT_IP, | |
125 | WAIT_DATA, | |
126 | WAIT_SYNC | |
127 | }; | |
128 | ||
129 | /*****************************************************************************/ | |
130 | /* Structs */ | |
131 | /*****************************************************************************/ | |
132 | ||
133 | struct hso_shared_int { | |
134 | struct usb_endpoint_descriptor *intr_endp; | |
135 | void *shared_intr_buf; | |
136 | struct urb *shared_intr_urb; | |
137 | struct usb_device *usb; | |
138 | int use_count; | |
139 | int ref_count; | |
140 | struct mutex shared_int_lock; | |
141 | }; | |
142 | ||
143 | struct hso_net { | |
144 | struct hso_device *parent; | |
145 | struct net_device *net; | |
146 | struct rfkill *rfkill; | |
38121067 | 147 | char name[24]; |
72dc1c09 GKH |
148 | |
149 | struct usb_endpoint_descriptor *in_endp; | |
150 | struct usb_endpoint_descriptor *out_endp; | |
151 | ||
152 | struct urb *mux_bulk_rx_urb_pool[MUX_BULK_RX_BUF_COUNT]; | |
153 | struct urb *mux_bulk_tx_urb; | |
154 | void *mux_bulk_rx_buf_pool[MUX_BULK_RX_BUF_COUNT]; | |
155 | void *mux_bulk_tx_buf; | |
156 | ||
157 | struct sk_buff *skb_rx_buf; | |
158 | struct sk_buff *skb_tx_buf; | |
159 | ||
160 | enum pkt_parse_state rx_parse_state; | |
161 | spinlock_t net_lock; | |
162 | ||
163 | unsigned short rx_buf_size; | |
164 | unsigned short rx_buf_missing; | |
165 | struct iphdr rx_ip_hdr; | |
166 | ||
167 | unsigned long flags; | |
168 | }; | |
169 | ||
8ef5ba63 DJB |
170 | enum rx_ctrl_state{ |
171 | RX_IDLE, | |
172 | RX_SENT, | |
173 | RX_PENDING | |
174 | }; | |
175 | ||
542f5482 DJB |
176 | #define BM_REQUEST_TYPE (0xa1) |
177 | #define B_NOTIFICATION (0x20) | |
178 | #define W_VALUE (0x0) | |
542f5482 DJB |
179 | #define W_LENGTH (0x2) |
180 | ||
181 | #define B_OVERRUN (0x1<<6) | |
182 | #define B_PARITY (0x1<<5) | |
183 | #define B_FRAMING (0x1<<4) | |
184 | #define B_RING_SIGNAL (0x1<<3) | |
185 | #define B_BREAK (0x1<<2) | |
186 | #define B_TX_CARRIER (0x1<<1) | |
187 | #define B_RX_CARRIER (0x1<<0) | |
188 | ||
189 | struct hso_serial_state_notification { | |
190 | u8 bmRequestType; | |
191 | u8 bNotification; | |
192 | u16 wValue; | |
193 | u16 wIndex; | |
194 | u16 wLength; | |
195 | u16 UART_state_bitmap; | |
ba2d3587 | 196 | } __packed; |
542f5482 DJB |
197 | |
198 | struct hso_tiocmget { | |
199 | struct mutex mutex; | |
200 | wait_queue_head_t waitq; | |
201 | int intr_completed; | |
202 | struct usb_endpoint_descriptor *endp; | |
203 | struct urb *urb; | |
204 | struct hso_serial_state_notification serial_state_notification; | |
205 | u16 prev_UART_state_bitmap; | |
206 | struct uart_icount icount; | |
207 | }; | |
208 | ||
209 | ||
72dc1c09 GKH |
210 | struct hso_serial { |
211 | struct hso_device *parent; | |
212 | int magic; | |
213 | u8 minor; | |
214 | ||
215 | struct hso_shared_int *shared_int; | |
216 | ||
217 | /* rx/tx urb could be either a bulk urb or a control urb depending | |
218 | on which serial port it is used on. */ | |
219 | struct urb *rx_urb[MAX_RX_URBS]; | |
220 | u8 num_rx_urbs; | |
221 | u8 *rx_data[MAX_RX_URBS]; | |
222 | u16 rx_data_length; /* should contain allocated length */ | |
223 | ||
224 | struct urb *tx_urb; | |
225 | u8 *tx_data; | |
226 | u8 *tx_buffer; | |
227 | u16 tx_data_length; /* should contain allocated length */ | |
228 | u16 tx_data_count; | |
229 | u16 tx_buffer_count; | |
230 | struct usb_ctrlrequest ctrl_req_tx; | |
231 | struct usb_ctrlrequest ctrl_req_rx; | |
232 | ||
233 | struct usb_endpoint_descriptor *in_endp; | |
234 | struct usb_endpoint_descriptor *out_endp; | |
235 | ||
8ef5ba63 | 236 | enum rx_ctrl_state rx_state; |
72dc1c09 GKH |
237 | u8 rts_state; |
238 | u8 dtr_state; | |
239 | unsigned tx_urb_used:1; | |
240 | ||
5ce76e77 | 241 | struct tty_port port; |
72dc1c09 | 242 | /* from usb_serial_port */ |
72dc1c09 GKH |
243 | spinlock_t serial_lock; |
244 | ||
245 | int (*write_data) (struct hso_serial *serial); | |
542f5482 | 246 | struct hso_tiocmget *tiocmget; |
8ef5ba63 DJB |
247 | /* Hacks required to get flow control |
248 | * working on the serial receive buffers | |
249 | * so as not to drop characters on the floor. | |
250 | */ | |
251 | int curr_rx_urb_idx; | |
8ef5ba63 DJB |
252 | u8 rx_urb_filled[MAX_RX_URBS]; |
253 | struct tasklet_struct unthrottle_tasklet; | |
72dc1c09 GKH |
254 | }; |
255 | ||
256 | struct hso_device { | |
257 | union { | |
258 | struct hso_serial *dev_serial; | |
259 | struct hso_net *dev_net; | |
260 | } port_data; | |
261 | ||
262 | u32 port_spec; | |
263 | ||
264 | u8 is_active; | |
265 | u8 usb_gone; | |
266 | struct work_struct async_get_intf; | |
267 | struct work_struct async_put_intf; | |
268 | ||
269 | struct usb_device *usb; | |
270 | struct usb_interface *interface; | |
271 | ||
272 | struct device *dev; | |
273 | struct kref ref; | |
ab153d84 | 274 | struct mutex mutex; |
72dc1c09 GKH |
275 | }; |
276 | ||
277 | /* Type of interface */ | |
278 | #define HSO_INTF_MASK 0xFF00 | |
279 | #define HSO_INTF_MUX 0x0100 | |
280 | #define HSO_INTF_BULK 0x0200 | |
281 | ||
282 | /* Type of port */ | |
283 | #define HSO_PORT_MASK 0xFF | |
284 | #define HSO_PORT_NO_PORT 0x0 | |
285 | #define HSO_PORT_CONTROL 0x1 | |
286 | #define HSO_PORT_APP 0x2 | |
287 | #define HSO_PORT_GPS 0x3 | |
288 | #define HSO_PORT_PCSC 0x4 | |
289 | #define HSO_PORT_APP2 0x5 | |
290 | #define HSO_PORT_GPS_CONTROL 0x6 | |
291 | #define HSO_PORT_MSD 0x7 | |
292 | #define HSO_PORT_VOICE 0x8 | |
293 | #define HSO_PORT_DIAG2 0x9 | |
294 | #define HSO_PORT_DIAG 0x10 | |
295 | #define HSO_PORT_MODEM 0x11 | |
296 | #define HSO_PORT_NETWORK 0x12 | |
297 | ||
298 | /* Additional device info */ | |
299 | #define HSO_INFO_MASK 0xFF000000 | |
300 | #define HSO_INFO_CRC_BUG 0x01000000 | |
301 | ||
302 | /*****************************************************************************/ | |
303 | /* Prototypes */ | |
304 | /*****************************************************************************/ | |
305 | /* Serial driver functions */ | |
20b9d177 | 306 | static int hso_serial_tiocmset(struct tty_struct *tty, |
72dc1c09 GKH |
307 | unsigned int set, unsigned int clear); |
308 | static void ctrl_callback(struct urb *urb); | |
8ef5ba63 | 309 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial); |
72dc1c09 GKH |
310 | static void hso_kick_transmit(struct hso_serial *serial); |
311 | /* Helper functions */ | |
312 | static int hso_mux_submit_intr_urb(struct hso_shared_int *mux_int, | |
313 | struct usb_device *usb, gfp_t gfp); | |
68a351c5 JD |
314 | static void handle_usb_error(int status, const char *function, |
315 | struct hso_device *hso_dev); | |
72dc1c09 GKH |
316 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, |
317 | int type, int dir); | |
318 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports); | |
319 | static void hso_free_interface(struct usb_interface *intf); | |
320 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags); | |
321 | static int hso_stop_serial_device(struct hso_device *hso_dev); | |
322 | static int hso_start_net_device(struct hso_device *hso_dev); | |
323 | static void hso_free_shared_int(struct hso_shared_int *shared_int); | |
324 | static int hso_stop_net_device(struct hso_device *hso_dev); | |
325 | static void hso_serial_ref_free(struct kref *ref); | |
8ef5ba63 DJB |
326 | static void hso_std_serial_read_bulk_callback(struct urb *urb); |
327 | static int hso_mux_serial_read(struct hso_serial *serial); | |
72dc1c09 GKH |
328 | static void async_get_intf(struct work_struct *data); |
329 | static void async_put_intf(struct work_struct *data); | |
330 | static int hso_put_activity(struct hso_device *hso_dev); | |
331 | static int hso_get_activity(struct hso_device *hso_dev); | |
542f5482 | 332 | static void tiocmget_intr_callback(struct urb *urb); |
72dc1c09 GKH |
333 | /*****************************************************************************/ |
334 | /* Helping functions */ | |
335 | /*****************************************************************************/ | |
336 | ||
337 | /* #define DEBUG */ | |
338 | ||
0235f641 GKH |
339 | static inline struct hso_net *dev2net(struct hso_device *hso_dev) |
340 | { | |
341 | return hso_dev->port_data.dev_net; | |
342 | } | |
343 | ||
344 | static inline struct hso_serial *dev2ser(struct hso_device *hso_dev) | |
345 | { | |
346 | return hso_dev->port_data.dev_serial; | |
347 | } | |
72dc1c09 GKH |
348 | |
349 | /* Debugging functions */ | |
350 | #ifdef DEBUG | |
351 | static void dbg_dump(int line_count, const char *func_name, unsigned char *buf, | |
352 | unsigned int len) | |
353 | { | |
0235f641 | 354 | static char name[255]; |
72dc1c09 | 355 | |
0235f641 GKH |
356 | sprintf(name, "hso[%d:%s]", line_count, func_name); |
357 | print_hex_dump_bytes(name, DUMP_PREFIX_NONE, buf, len); | |
72dc1c09 GKH |
358 | } |
359 | ||
360 | #define DUMP(buf_, len_) \ | |
9ce673d5 | 361 | dbg_dump(__LINE__, __func__, (unsigned char *)buf_, len_) |
72dc1c09 GKH |
362 | |
363 | #define DUMP1(buf_, len_) \ | |
364 | do { \ | |
365 | if (0x01 & debug) \ | |
366 | DUMP(buf_, len_); \ | |
367 | } while (0) | |
368 | #else | |
369 | #define DUMP(buf_, len_) | |
370 | #define DUMP1(buf_, len_) | |
371 | #endif | |
372 | ||
373 | /* module parameters */ | |
374 | static int debug; | |
375 | static int tty_major; | |
376 | static int disable_net; | |
377 | ||
378 | /* driver info */ | |
379 | static const char driver_name[] = "hso"; | |
380 | static const char tty_filename[] = "ttyHS"; | |
242647bc | 381 | static const char *version = __FILE__ ": " MOD_AUTHOR; |
72dc1c09 GKH |
382 | /* the usb driver itself (registered in hso_init) */ |
383 | static struct usb_driver hso_driver; | |
384 | /* serial structures */ | |
385 | static struct tty_driver *tty_drv; | |
386 | static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS]; | |
387 | static struct hso_device *network_table[HSO_MAX_NET_DEVICES]; | |
388 | static spinlock_t serial_table_lock; | |
72dc1c09 GKH |
389 | |
390 | static const s32 default_port_spec[] = { | |
391 | HSO_INTF_MUX | HSO_PORT_NETWORK, | |
392 | HSO_INTF_BULK | HSO_PORT_DIAG, | |
393 | HSO_INTF_BULK | HSO_PORT_MODEM, | |
394 | 0 | |
395 | }; | |
396 | ||
397 | static const s32 icon321_port_spec[] = { | |
398 | HSO_INTF_MUX | HSO_PORT_NETWORK, | |
399 | HSO_INTF_BULK | HSO_PORT_DIAG2, | |
400 | HSO_INTF_BULK | HSO_PORT_MODEM, | |
401 | HSO_INTF_BULK | HSO_PORT_DIAG, | |
402 | 0 | |
403 | }; | |
404 | ||
405 | #define default_port_device(vendor, product) \ | |
406 | USB_DEVICE(vendor, product), \ | |
407 | .driver_info = (kernel_ulong_t)default_port_spec | |
408 | ||
409 | #define icon321_port_device(vendor, product) \ | |
410 | USB_DEVICE(vendor, product), \ | |
411 | .driver_info = (kernel_ulong_t)icon321_port_spec | |
412 | ||
413 | /* list of devices we support */ | |
414 | static const struct usb_device_id hso_ids[] = { | |
415 | {default_port_device(0x0af0, 0x6711)}, | |
416 | {default_port_device(0x0af0, 0x6731)}, | |
417 | {default_port_device(0x0af0, 0x6751)}, | |
418 | {default_port_device(0x0af0, 0x6771)}, | |
419 | {default_port_device(0x0af0, 0x6791)}, | |
420 | {default_port_device(0x0af0, 0x6811)}, | |
421 | {default_port_device(0x0af0, 0x6911)}, | |
422 | {default_port_device(0x0af0, 0x6951)}, | |
423 | {default_port_device(0x0af0, 0x6971)}, | |
424 | {default_port_device(0x0af0, 0x7011)}, | |
425 | {default_port_device(0x0af0, 0x7031)}, | |
426 | {default_port_device(0x0af0, 0x7051)}, | |
427 | {default_port_device(0x0af0, 0x7071)}, | |
428 | {default_port_device(0x0af0, 0x7111)}, | |
429 | {default_port_device(0x0af0, 0x7211)}, | |
430 | {default_port_device(0x0af0, 0x7251)}, | |
431 | {default_port_device(0x0af0, 0x7271)}, | |
432 | {default_port_device(0x0af0, 0x7311)}, | |
433 | {default_port_device(0x0af0, 0xc031)}, /* Icon-Edge */ | |
434 | {icon321_port_device(0x0af0, 0xd013)}, /* Module HSxPA */ | |
435 | {icon321_port_device(0x0af0, 0xd031)}, /* Icon-321 */ | |
95eacee8 | 436 | {icon321_port_device(0x0af0, 0xd033)}, /* Icon-322 */ |
72dc1c09 GKH |
437 | {USB_DEVICE(0x0af0, 0x7301)}, /* GE40x */ |
438 | {USB_DEVICE(0x0af0, 0x7361)}, /* GE40x */ | |
67dd8246 | 439 | {USB_DEVICE(0x0af0, 0x7381)}, /* GE40x */ |
72dc1c09 GKH |
440 | {USB_DEVICE(0x0af0, 0x7401)}, /* GI 0401 */ |
441 | {USB_DEVICE(0x0af0, 0x7501)}, /* GTM 382 */ | |
442 | {USB_DEVICE(0x0af0, 0x7601)}, /* GE40x */ | |
bab04c3a | 443 | {USB_DEVICE(0x0af0, 0x7701)}, |
ec157937 | 444 | {USB_DEVICE(0x0af0, 0x7706)}, |
bab04c3a DJB |
445 | {USB_DEVICE(0x0af0, 0x7801)}, |
446 | {USB_DEVICE(0x0af0, 0x7901)}, | |
ec157937 JD |
447 | {USB_DEVICE(0x0af0, 0x7A01)}, |
448 | {USB_DEVICE(0x0af0, 0x7A05)}, | |
9961d842 JD |
449 | {USB_DEVICE(0x0af0, 0x8200)}, |
450 | {USB_DEVICE(0x0af0, 0x8201)}, | |
ec157937 JD |
451 | {USB_DEVICE(0x0af0, 0x8300)}, |
452 | {USB_DEVICE(0x0af0, 0x8302)}, | |
453 | {USB_DEVICE(0x0af0, 0x8304)}, | |
454 | {USB_DEVICE(0x0af0, 0x8400)}, | |
dd7496f2 FA |
455 | {USB_DEVICE(0x0af0, 0x8600)}, |
456 | {USB_DEVICE(0x0af0, 0x8800)}, | |
457 | {USB_DEVICE(0x0af0, 0x8900)}, | |
5c7bf2f4 | 458 | {USB_DEVICE(0x0af0, 0x9000)}, |
61ab9efd | 459 | {USB_DEVICE(0x0af0, 0x9200)}, /* Option GTM671WFS */ |
9961d842 | 460 | {USB_DEVICE(0x0af0, 0xd035)}, |
67dd8246 | 461 | {USB_DEVICE(0x0af0, 0xd055)}, |
9961d842 JD |
462 | {USB_DEVICE(0x0af0, 0xd155)}, |
463 | {USB_DEVICE(0x0af0, 0xd255)}, | |
464 | {USB_DEVICE(0x0af0, 0xd057)}, | |
465 | {USB_DEVICE(0x0af0, 0xd157)}, | |
466 | {USB_DEVICE(0x0af0, 0xd257)}, | |
467 | {USB_DEVICE(0x0af0, 0xd357)}, | |
ec157937 JD |
468 | {USB_DEVICE(0x0af0, 0xd058)}, |
469 | {USB_DEVICE(0x0af0, 0xc100)}, | |
72dc1c09 GKH |
470 | {} |
471 | }; | |
472 | MODULE_DEVICE_TABLE(usb, hso_ids); | |
473 | ||
474 | /* Sysfs attribute */ | |
475 | static ssize_t hso_sysfs_show_porttype(struct device *dev, | |
476 | struct device_attribute *attr, | |
477 | char *buf) | |
478 | { | |
1aec5bdf | 479 | struct hso_device *hso_dev = dev_get_drvdata(dev); |
72dc1c09 GKH |
480 | char *port_name; |
481 | ||
482 | if (!hso_dev) | |
483 | return 0; | |
484 | ||
485 | switch (hso_dev->port_spec & HSO_PORT_MASK) { | |
486 | case HSO_PORT_CONTROL: | |
487 | port_name = "Control"; | |
488 | break; | |
489 | case HSO_PORT_APP: | |
490 | port_name = "Application"; | |
491 | break; | |
492 | case HSO_PORT_APP2: | |
493 | port_name = "Application2"; | |
494 | break; | |
495 | case HSO_PORT_GPS: | |
496 | port_name = "GPS"; | |
497 | break; | |
498 | case HSO_PORT_GPS_CONTROL: | |
499 | port_name = "GPS Control"; | |
500 | break; | |
501 | case HSO_PORT_PCSC: | |
502 | port_name = "PCSC"; | |
503 | break; | |
504 | case HSO_PORT_DIAG: | |
505 | port_name = "Diagnostic"; | |
506 | break; | |
507 | case HSO_PORT_DIAG2: | |
508 | port_name = "Diagnostic2"; | |
509 | break; | |
510 | case HSO_PORT_MODEM: | |
511 | port_name = "Modem"; | |
512 | break; | |
513 | case HSO_PORT_NETWORK: | |
514 | port_name = "Network"; | |
515 | break; | |
516 | default: | |
517 | port_name = "Unknown"; | |
518 | break; | |
519 | } | |
520 | ||
521 | return sprintf(buf, "%s\n", port_name); | |
522 | } | |
523 | static DEVICE_ATTR(hsotype, S_IRUGO, hso_sysfs_show_porttype, NULL); | |
524 | ||
4134069f TI |
525 | static struct attribute *hso_serial_dev_attrs[] = { |
526 | &dev_attr_hsotype.attr, | |
527 | NULL | |
528 | }; | |
529 | ||
530 | ATTRIBUTE_GROUPS(hso_serial_dev); | |
531 | ||
8ef5ba63 DJB |
532 | static int hso_urb_to_index(struct hso_serial *serial, struct urb *urb) |
533 | { | |
534 | int idx; | |
535 | ||
536 | for (idx = 0; idx < serial->num_rx_urbs; idx++) | |
537 | if (serial->rx_urb[idx] == urb) | |
538 | return idx; | |
539 | dev_err(serial->parent->dev, "hso_urb_to_index failed\n"); | |
540 | return -1; | |
541 | } | |
542 | ||
72dc1c09 GKH |
543 | /* converts mux value to a port spec value */ |
544 | static u32 hso_mux_to_port(int mux) | |
545 | { | |
546 | u32 result; | |
547 | ||
548 | switch (mux) { | |
549 | case 0x1: | |
550 | result = HSO_PORT_CONTROL; | |
551 | break; | |
552 | case 0x2: | |
553 | result = HSO_PORT_APP; | |
554 | break; | |
555 | case 0x4: | |
556 | result = HSO_PORT_PCSC; | |
557 | break; | |
558 | case 0x8: | |
559 | result = HSO_PORT_GPS; | |
560 | break; | |
561 | case 0x10: | |
562 | result = HSO_PORT_APP2; | |
563 | break; | |
564 | default: | |
565 | result = HSO_PORT_NO_PORT; | |
566 | } | |
567 | return result; | |
568 | } | |
569 | ||
570 | /* converts port spec value to a mux value */ | |
571 | static u32 hso_port_to_mux(int port) | |
572 | { | |
573 | u32 result; | |
574 | ||
575 | switch (port & HSO_PORT_MASK) { | |
576 | case HSO_PORT_CONTROL: | |
577 | result = 0x0; | |
578 | break; | |
579 | case HSO_PORT_APP: | |
580 | result = 0x1; | |
581 | break; | |
582 | case HSO_PORT_PCSC: | |
583 | result = 0x2; | |
584 | break; | |
585 | case HSO_PORT_GPS: | |
586 | result = 0x3; | |
587 | break; | |
588 | case HSO_PORT_APP2: | |
589 | result = 0x4; | |
590 | break; | |
591 | default: | |
592 | result = 0x0; | |
593 | } | |
594 | return result; | |
595 | } | |
596 | ||
597 | static struct hso_serial *get_serial_by_shared_int_and_type( | |
598 | struct hso_shared_int *shared_int, | |
599 | int mux) | |
600 | { | |
601 | int i, port; | |
602 | ||
603 | port = hso_mux_to_port(mux); | |
604 | ||
605 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
8e95a202 JP |
606 | if (serial_table[i] && |
607 | (dev2ser(serial_table[i])->shared_int == shared_int) && | |
608 | ((serial_table[i]->port_spec & HSO_PORT_MASK) == port)) { | |
72dc1c09 GKH |
609 | return dev2ser(serial_table[i]); |
610 | } | |
611 | } | |
612 | ||
613 | return NULL; | |
614 | } | |
615 | ||
616 | static struct hso_serial *get_serial_by_index(unsigned index) | |
617 | { | |
0235f641 | 618 | struct hso_serial *serial = NULL; |
72dc1c09 GKH |
619 | unsigned long flags; |
620 | ||
72dc1c09 | 621 | spin_lock_irqsave(&serial_table_lock, flags); |
0235f641 GKH |
622 | if (serial_table[index]) |
623 | serial = dev2ser(serial_table[index]); | |
72dc1c09 GKH |
624 | spin_unlock_irqrestore(&serial_table_lock, flags); |
625 | ||
626 | return serial; | |
627 | } | |
628 | ||
629 | static int get_free_serial_index(void) | |
630 | { | |
631 | int index; | |
632 | unsigned long flags; | |
633 | ||
634 | spin_lock_irqsave(&serial_table_lock, flags); | |
635 | for (index = 0; index < HSO_SERIAL_TTY_MINORS; index++) { | |
636 | if (serial_table[index] == NULL) { | |
637 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
638 | return index; | |
639 | } | |
640 | } | |
641 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
642 | ||
3981cce6 | 643 | pr_err("%s: no free serial devices in table\n", __func__); |
72dc1c09 GKH |
644 | return -1; |
645 | } | |
646 | ||
647 | static void set_serial_by_index(unsigned index, struct hso_serial *serial) | |
648 | { | |
649 | unsigned long flags; | |
0235f641 | 650 | |
72dc1c09 GKH |
651 | spin_lock_irqsave(&serial_table_lock, flags); |
652 | if (serial) | |
653 | serial_table[index] = serial->parent; | |
654 | else | |
655 | serial_table[index] = NULL; | |
656 | spin_unlock_irqrestore(&serial_table_lock, flags); | |
657 | } | |
658 | ||
68a351c5 JD |
659 | static void handle_usb_error(int status, const char *function, |
660 | struct hso_device *hso_dev) | |
72dc1c09 GKH |
661 | { |
662 | char *explanation; | |
663 | ||
664 | switch (status) { | |
665 | case -ENODEV: | |
666 | explanation = "no device"; | |
667 | break; | |
668 | case -ENOENT: | |
669 | explanation = "endpoint not enabled"; | |
670 | break; | |
671 | case -EPIPE: | |
672 | explanation = "endpoint stalled"; | |
673 | break; | |
674 | case -ENOSPC: | |
675 | explanation = "not enough bandwidth"; | |
676 | break; | |
677 | case -ESHUTDOWN: | |
678 | explanation = "device disabled"; | |
679 | break; | |
680 | case -EHOSTUNREACH: | |
681 | explanation = "device suspended"; | |
682 | break; | |
683 | case -EINVAL: | |
684 | case -EAGAIN: | |
685 | case -EFBIG: | |
686 | case -EMSGSIZE: | |
687 | explanation = "internal error"; | |
688 | break; | |
68a351c5 JD |
689 | case -EILSEQ: |
690 | case -EPROTO: | |
691 | case -ETIME: | |
692 | case -ETIMEDOUT: | |
693 | explanation = "protocol error"; | |
694 | if (hso_dev) | |
26c1f1f5 | 695 | usb_queue_reset_device(hso_dev->interface); |
68a351c5 | 696 | break; |
72dc1c09 GKH |
697 | default: |
698 | explanation = "unknown status"; | |
699 | break; | |
700 | } | |
68a351c5 JD |
701 | |
702 | /* log a meaningful explanation of an USB status */ | |
95a69117 JP |
703 | hso_dbg(0x1, "%s: received USB status - %s (%d)\n", |
704 | function, explanation, status); | |
72dc1c09 GKH |
705 | } |
706 | ||
707 | /* Network interface functions */ | |
708 | ||
709 | /* called when net interface is brought up by ifconfig */ | |
710 | static int hso_net_open(struct net_device *net) | |
711 | { | |
712 | struct hso_net *odev = netdev_priv(net); | |
713 | unsigned long flags = 0; | |
714 | ||
715 | if (!odev) { | |
716 | dev_err(&net->dev, "No net device !\n"); | |
717 | return -ENODEV; | |
718 | } | |
719 | ||
720 | odev->skb_tx_buf = NULL; | |
721 | ||
722 | /* setup environment */ | |
723 | spin_lock_irqsave(&odev->net_lock, flags); | |
724 | odev->rx_parse_state = WAIT_IP; | |
725 | odev->rx_buf_size = 0; | |
726 | odev->rx_buf_missing = sizeof(struct iphdr); | |
727 | spin_unlock_irqrestore(&odev->net_lock, flags); | |
728 | ||
72dc1c09 GKH |
729 | /* We are up and running. */ |
730 | set_bit(HSO_NET_RUNNING, &odev->flags); | |
889bd9b6 | 731 | hso_start_net_device(odev->parent); |
72dc1c09 GKH |
732 | |
733 | /* Tell the kernel we are ready to start receiving from it */ | |
734 | netif_start_queue(net); | |
735 | ||
736 | return 0; | |
737 | } | |
738 | ||
739 | /* called when interface is brought down by ifconfig */ | |
740 | static int hso_net_close(struct net_device *net) | |
741 | { | |
742 | struct hso_net *odev = netdev_priv(net); | |
743 | ||
744 | /* we don't need the queue anymore */ | |
745 | netif_stop_queue(net); | |
746 | /* no longer running */ | |
747 | clear_bit(HSO_NET_RUNNING, &odev->flags); | |
748 | ||
749 | hso_stop_net_device(odev->parent); | |
750 | ||
751 | /* done */ | |
752 | return 0; | |
753 | } | |
754 | ||
755 | /* USB tells is xmit done, we should start the netqueue again */ | |
756 | static void write_bulk_callback(struct urb *urb) | |
757 | { | |
758 | struct hso_net *odev = urb->context; | |
759 | int status = urb->status; | |
760 | ||
761 | /* Sanity check */ | |
762 | if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { | |
763 | dev_err(&urb->dev->dev, "%s: device not running\n", __func__); | |
764 | return; | |
765 | } | |
766 | ||
767 | /* Do we still have a valid kernel network device? */ | |
768 | if (!netif_device_present(odev->net)) { | |
769 | dev_err(&urb->dev->dev, "%s: net device not present\n", | |
770 | __func__); | |
771 | return; | |
772 | } | |
773 | ||
774 | /* log status, but don't act on it, we don't need to resubmit anything | |
775 | * anyhow */ | |
776 | if (status) | |
68a351c5 | 777 | handle_usb_error(status, __func__, odev->parent); |
72dc1c09 GKH |
778 | |
779 | hso_put_activity(odev->parent); | |
780 | ||
781 | /* Tell the network interface we are ready for another frame */ | |
782 | netif_wake_queue(odev->net); | |
783 | } | |
784 | ||
785 | /* called by kernel when we need to transmit a packet */ | |
25a79c41 SH |
786 | static netdev_tx_t hso_net_start_xmit(struct sk_buff *skb, |
787 | struct net_device *net) | |
72dc1c09 GKH |
788 | { |
789 | struct hso_net *odev = netdev_priv(net); | |
790 | int result; | |
791 | ||
792 | /* Tell the kernel, "No more frames 'til we are done with this one." */ | |
793 | netif_stop_queue(net); | |
794 | if (hso_get_activity(odev->parent) == -EAGAIN) { | |
795 | odev->skb_tx_buf = skb; | |
6ed10654 | 796 | return NETDEV_TX_OK; |
72dc1c09 GKH |
797 | } |
798 | ||
799 | /* log if asked */ | |
800 | DUMP1(skb->data, skb->len); | |
801 | /* Copy it from kernel memory to OUR memory */ | |
802 | memcpy(odev->mux_bulk_tx_buf, skb->data, skb->len); | |
95a69117 | 803 | hso_dbg(0x1, "len: %d/%d\n", skb->len, MUX_BULK_TX_BUF_SIZE); |
72dc1c09 GKH |
804 | |
805 | /* Fill in the URB for shipping it out. */ | |
806 | usb_fill_bulk_urb(odev->mux_bulk_tx_urb, | |
807 | odev->parent->usb, | |
808 | usb_sndbulkpipe(odev->parent->usb, | |
809 | odev->out_endp-> | |
810 | bEndpointAddress & 0x7F), | |
811 | odev->mux_bulk_tx_buf, skb->len, write_bulk_callback, | |
812 | odev); | |
813 | ||
814 | /* Deal with the Zero Length packet problem, I hope */ | |
815 | odev->mux_bulk_tx_urb->transfer_flags |= URB_ZERO_PACKET; | |
816 | ||
817 | /* Send the URB on its merry way. */ | |
818 | result = usb_submit_urb(odev->mux_bulk_tx_urb, GFP_ATOMIC); | |
819 | if (result) { | |
820 | dev_warn(&odev->parent->interface->dev, | |
8a5c9c49 | 821 | "failed mux_bulk_tx_urb %d\n", result); |
72dc1c09 GKH |
822 | net->stats.tx_errors++; |
823 | netif_start_queue(net); | |
824 | } else { | |
825 | net->stats.tx_packets++; | |
826 | net->stats.tx_bytes += skb->len; | |
72dc1c09 GKH |
827 | } |
828 | dev_kfree_skb(skb); | |
829 | /* we're done */ | |
5b2c4b97 | 830 | return NETDEV_TX_OK; |
72dc1c09 GKH |
831 | } |
832 | ||
0fc0b732 | 833 | static const struct ethtool_ops ops = { |
72dc1c09 GKH |
834 | .get_link = ethtool_op_get_link |
835 | }; | |
836 | ||
837 | /* called when a packet did not ack after watchdogtimeout */ | |
838 | static void hso_net_tx_timeout(struct net_device *net) | |
839 | { | |
840 | struct hso_net *odev = netdev_priv(net); | |
841 | ||
842 | if (!odev) | |
843 | return; | |
844 | ||
845 | /* Tell syslog we are hosed. */ | |
846 | dev_warn(&net->dev, "Tx timed out.\n"); | |
847 | ||
848 | /* Tear the waiting frame off the list */ | |
8e95a202 JP |
849 | if (odev->mux_bulk_tx_urb && |
850 | (odev->mux_bulk_tx_urb->status == -EINPROGRESS)) | |
72dc1c09 GKH |
851 | usb_unlink_urb(odev->mux_bulk_tx_urb); |
852 | ||
853 | /* Update statistics */ | |
854 | net->stats.tx_errors++; | |
855 | } | |
856 | ||
857 | /* make a real packet from the received USB buffer */ | |
858 | static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt, | |
859 | unsigned int count, unsigned char is_eop) | |
860 | { | |
861 | unsigned short temp_bytes; | |
862 | unsigned short buffer_offset = 0; | |
863 | unsigned short frame_len; | |
72dc1c09 GKH |
864 | |
865 | /* log if needed */ | |
95a69117 | 866 | hso_dbg(0x1, "Rx %d bytes\n", count); |
72dc1c09 GKH |
867 | DUMP(ip_pkt, min(128, (int)count)); |
868 | ||
869 | while (count) { | |
870 | switch (odev->rx_parse_state) { | |
871 | case WAIT_IP: | |
872 | /* waiting for IP header. */ | |
873 | /* wanted bytes - size of ip header */ | |
874 | temp_bytes = | |
875 | (count < | |
876 | odev->rx_buf_missing) ? count : odev-> | |
877 | rx_buf_missing; | |
878 | ||
879 | memcpy(((unsigned char *)(&odev->rx_ip_hdr)) + | |
880 | odev->rx_buf_size, ip_pkt + buffer_offset, | |
881 | temp_bytes); | |
882 | ||
883 | odev->rx_buf_size += temp_bytes; | |
884 | buffer_offset += temp_bytes; | |
885 | odev->rx_buf_missing -= temp_bytes; | |
886 | count -= temp_bytes; | |
887 | ||
888 | if (!odev->rx_buf_missing) { | |
889 | /* header is complete allocate an sk_buffer and | |
890 | * continue to WAIT_DATA */ | |
891 | frame_len = ntohs(odev->rx_ip_hdr.tot_len); | |
892 | ||
893 | if ((frame_len > DEFAULT_MRU) || | |
894 | (frame_len < sizeof(struct iphdr))) { | |
895 | dev_err(&odev->net->dev, | |
896 | "Invalid frame (%d) length\n", | |
897 | frame_len); | |
898 | odev->rx_parse_state = WAIT_SYNC; | |
899 | continue; | |
900 | } | |
901 | /* Allocate an sk_buff */ | |
d65a68a8 PZ |
902 | odev->skb_rx_buf = netdev_alloc_skb(odev->net, |
903 | frame_len); | |
72dc1c09 GKH |
904 | if (!odev->skb_rx_buf) { |
905 | /* We got no receive buffer. */ | |
95a69117 | 906 | hso_dbg(0x1, "could not allocate memory\n"); |
72dc1c09 | 907 | odev->rx_parse_state = WAIT_SYNC; |
04166055 | 908 | continue; |
72dc1c09 | 909 | } |
72dc1c09 GKH |
910 | |
911 | /* Copy what we got so far. make room for iphdr | |
912 | * after tail. */ | |
b952f4df | 913 | skb_put_data(odev->skb_rx_buf, |
914 | (char *)&(odev->rx_ip_hdr), | |
915 | sizeof(struct iphdr)); | |
72dc1c09 GKH |
916 | |
917 | /* ETH_HLEN */ | |
918 | odev->rx_buf_size = sizeof(struct iphdr); | |
919 | ||
920 | /* Filip actually use .tot_len */ | |
921 | odev->rx_buf_missing = | |
922 | frame_len - sizeof(struct iphdr); | |
923 | odev->rx_parse_state = WAIT_DATA; | |
924 | } | |
925 | break; | |
926 | ||
927 | case WAIT_DATA: | |
928 | temp_bytes = (count < odev->rx_buf_missing) | |
929 | ? count : odev->rx_buf_missing; | |
930 | ||
931 | /* Copy the rest of the bytes that are left in the | |
932 | * buffer into the waiting sk_buf. */ | |
933 | /* Make room for temp_bytes after tail. */ | |
b952f4df | 934 | skb_put_data(odev->skb_rx_buf, |
935 | ip_pkt + buffer_offset, | |
936 | temp_bytes); | |
72dc1c09 GKH |
937 | |
938 | odev->rx_buf_missing -= temp_bytes; | |
939 | count -= temp_bytes; | |
940 | buffer_offset += temp_bytes; | |
941 | odev->rx_buf_size += temp_bytes; | |
942 | if (!odev->rx_buf_missing) { | |
943 | /* Packet is complete. Inject into stack. */ | |
944 | /* We have IP packet here */ | |
09640e63 | 945 | odev->skb_rx_buf->protocol = cpu_to_be16(ETH_P_IP); |
72dc1c09 GKH |
946 | skb_reset_mac_header(odev->skb_rx_buf); |
947 | ||
948 | /* Ship it off to the kernel */ | |
949 | netif_rx(odev->skb_rx_buf); | |
950 | /* No longer our buffer. */ | |
951 | odev->skb_rx_buf = NULL; | |
952 | ||
953 | /* update out statistics */ | |
954 | odev->net->stats.rx_packets++; | |
955 | ||
956 | odev->net->stats.rx_bytes += odev->rx_buf_size; | |
957 | ||
958 | odev->rx_buf_size = 0; | |
959 | odev->rx_buf_missing = sizeof(struct iphdr); | |
960 | odev->rx_parse_state = WAIT_IP; | |
961 | } | |
962 | break; | |
963 | ||
964 | case WAIT_SYNC: | |
95a69117 | 965 | hso_dbg(0x1, " W_S\n"); |
72dc1c09 GKH |
966 | count = 0; |
967 | break; | |
968 | default: | |
95a69117 | 969 | hso_dbg(0x1, "\n"); |
72dc1c09 GKH |
970 | count--; |
971 | break; | |
972 | } | |
973 | } | |
974 | ||
975 | /* Recovery mechanism for WAIT_SYNC state. */ | |
976 | if (is_eop) { | |
977 | if (odev->rx_parse_state == WAIT_SYNC) { | |
978 | odev->rx_parse_state = WAIT_IP; | |
979 | odev->rx_buf_size = 0; | |
980 | odev->rx_buf_missing = sizeof(struct iphdr); | |
981 | } | |
982 | } | |
983 | } | |
984 | ||
5591c75d JP |
985 | static void fix_crc_bug(struct urb *urb, __le16 max_packet_size) |
986 | { | |
987 | static const u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF }; | |
988 | u32 rest = urb->actual_length % le16_to_cpu(max_packet_size); | |
989 | ||
990 | if (((rest == 5) || (rest == 6)) && | |
991 | !memcmp(((u8 *)urb->transfer_buffer) + urb->actual_length - 4, | |
992 | crc_check, 4)) { | |
993 | urb->actual_length -= 4; | |
994 | } | |
995 | } | |
996 | ||
72dc1c09 GKH |
997 | /* Moving data from usb to kernel (in interrupt state) */ |
998 | static void read_bulk_callback(struct urb *urb) | |
999 | { | |
1000 | struct hso_net *odev = urb->context; | |
1001 | struct net_device *net; | |
1002 | int result; | |
1003 | int status = urb->status; | |
1004 | ||
1005 | /* is al ok? (Filip: Who's Al ?) */ | |
1006 | if (status) { | |
68a351c5 | 1007 | handle_usb_error(status, __func__, odev->parent); |
72dc1c09 GKH |
1008 | return; |
1009 | } | |
1010 | ||
1011 | /* Sanity check */ | |
1012 | if (!odev || !test_bit(HSO_NET_RUNNING, &odev->flags)) { | |
95a69117 | 1013 | hso_dbg(0x1, "BULK IN callback but driver is not active!\n"); |
72dc1c09 GKH |
1014 | return; |
1015 | } | |
1016 | usb_mark_last_busy(urb->dev); | |
1017 | ||
1018 | net = odev->net; | |
1019 | ||
1020 | if (!netif_device_present(net)) { | |
1021 | /* Somebody killed our network interface... */ | |
1022 | return; | |
1023 | } | |
1024 | ||
5591c75d JP |
1025 | if (odev->parent->port_spec & HSO_INFO_CRC_BUG) |
1026 | fix_crc_bug(urb, odev->in_endp->wMaxPacketSize); | |
72dc1c09 GKH |
1027 | |
1028 | /* do we even have a packet? */ | |
1029 | if (urb->actual_length) { | |
1030 | /* Handle the IP stream, add header and push it onto network | |
1031 | * stack if the packet is complete. */ | |
1032 | spin_lock(&odev->net_lock); | |
1033 | packetizeRx(odev, urb->transfer_buffer, urb->actual_length, | |
1034 | (urb->transfer_buffer_length > | |
1035 | urb->actual_length) ? 1 : 0); | |
1036 | spin_unlock(&odev->net_lock); | |
1037 | } | |
1038 | ||
1039 | /* We are done with this URB, resubmit it. Prep the USB to wait for | |
1040 | * another frame. Reuse same as received. */ | |
1041 | usb_fill_bulk_urb(urb, | |
1042 | odev->parent->usb, | |
1043 | usb_rcvbulkpipe(odev->parent->usb, | |
1044 | odev->in_endp-> | |
1045 | bEndpointAddress & 0x7F), | |
1046 | urb->transfer_buffer, MUX_BULK_RX_BUF_SIZE, | |
1047 | read_bulk_callback, odev); | |
1048 | ||
1049 | /* Give this to the USB subsystem so it can tell us when more data | |
1050 | * arrives. */ | |
1051 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1052 | if (result) | |
1053 | dev_warn(&odev->parent->interface->dev, | |
8a5c9c49 | 1054 | "%s failed submit mux_bulk_rx_urb %d\n", __func__, |
72dc1c09 GKH |
1055 | result); |
1056 | } | |
1057 | ||
1058 | /* Serial driver functions */ | |
1059 | ||
ac9720c3 | 1060 | static void hso_init_termios(struct ktermios *termios) |
72dc1c09 | 1061 | { |
72dc1c09 GKH |
1062 | /* |
1063 | * The default requirements for this device are: | |
1064 | */ | |
72dc1c09 GKH |
1065 | termios->c_iflag &= |
1066 | ~(IGNBRK /* disable ignore break */ | |
1067 | | BRKINT /* disable break causes interrupt */ | |
1068 | | PARMRK /* disable mark parity errors */ | |
1069 | | ISTRIP /* disable clear high bit of input characters */ | |
1070 | | INLCR /* disable translate NL to CR */ | |
1071 | | IGNCR /* disable ignore CR */ | |
1072 | | ICRNL /* disable translate CR to NL */ | |
1073 | | IXON); /* disable enable XON/XOFF flow control */ | |
1074 | ||
1075 | /* disable postprocess output characters */ | |
1076 | termios->c_oflag &= ~OPOST; | |
1077 | ||
1078 | termios->c_lflag &= | |
1079 | ~(ECHO /* disable echo input characters */ | |
1080 | | ECHONL /* disable echo new line */ | |
1081 | | ICANON /* disable erase, kill, werase, and rprnt | |
1082 | special characters */ | |
1083 | | ISIG /* disable interrupt, quit, and suspend special | |
1084 | characters */ | |
1085 | | IEXTEN); /* disable non-POSIX special characters */ | |
1086 | ||
1087 | termios->c_cflag &= | |
1088 | ~(CSIZE /* no size */ | |
1089 | | PARENB /* disable parity bit */ | |
1090 | | CBAUD /* clear current baud rate */ | |
1091 | | CBAUDEX); /* clear current buad rate */ | |
1092 | ||
1093 | termios->c_cflag |= CS8; /* character size 8 bits */ | |
1094 | ||
1095 | /* baud rate 115200 */ | |
ac9720c3 AC |
1096 | tty_termios_encode_baud_rate(termios, 115200, 115200); |
1097 | } | |
1098 | ||
1099 | static void _hso_serial_set_termios(struct tty_struct *tty, | |
1100 | struct ktermios *old) | |
1101 | { | |
30409420 | 1102 | struct hso_serial *serial = tty->driver_data; |
ac9720c3 AC |
1103 | |
1104 | if (!serial) { | |
3981cce6 | 1105 | pr_err("%s: no tty structures", __func__); |
ac9720c3 AC |
1106 | return; |
1107 | } | |
1108 | ||
95a69117 | 1109 | hso_dbg(0x8, "port %d\n", serial->minor); |
72dc1c09 GKH |
1110 | |
1111 | /* | |
ac9720c3 | 1112 | * Fix up unsupported bits |
72dc1c09 | 1113 | */ |
adc8d746 | 1114 | tty->termios.c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */ |
ac9720c3 | 1115 | |
adc8d746 | 1116 | tty->termios.c_cflag &= |
ac9720c3 AC |
1117 | ~(CSIZE /* no size */ |
1118 | | PARENB /* disable parity bit */ | |
1119 | | CBAUD /* clear current baud rate */ | |
1120 | | CBAUDEX); /* clear current buad rate */ | |
1121 | ||
adc8d746 | 1122 | tty->termios.c_cflag |= CS8; /* character size 8 bits */ |
ac9720c3 AC |
1123 | |
1124 | /* baud rate 115200 */ | |
1125 | tty_encode_baud_rate(tty, 115200, 115200); | |
72dc1c09 GKH |
1126 | } |
1127 | ||
8ef5ba63 DJB |
1128 | static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb) |
1129 | { | |
1130 | int result; | |
8ef5ba63 DJB |
1131 | /* We are done with this URB, resubmit it. Prep the USB to wait for |
1132 | * another frame */ | |
1133 | usb_fill_bulk_urb(urb, serial->parent->usb, | |
1134 | usb_rcvbulkpipe(serial->parent->usb, | |
1135 | serial->in_endp-> | |
1136 | bEndpointAddress & 0x7F), | |
1137 | urb->transfer_buffer, serial->rx_data_length, | |
1138 | hso_std_serial_read_bulk_callback, serial); | |
1139 | /* Give this to the USB subsystem so it can tell us when more data | |
1140 | * arrives. */ | |
1141 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1142 | if (result) { | |
1143 | dev_err(&urb->dev->dev, "%s failed submit serial rx_urb %d\n", | |
1144 | __func__, result); | |
1145 | } | |
1146 | } | |
1147 | ||
1148 | ||
1149 | ||
1150 | ||
1151 | static void put_rxbuf_data_and_resubmit_bulk_urb(struct hso_serial *serial) | |
1152 | { | |
1153 | int count; | |
1154 | struct urb *curr_urb; | |
1155 | ||
1156 | while (serial->rx_urb_filled[serial->curr_rx_urb_idx]) { | |
1157 | curr_urb = serial->rx_urb[serial->curr_rx_urb_idx]; | |
1158 | count = put_rxbuf_data(curr_urb, serial); | |
1159 | if (count == -1) | |
1160 | return; | |
1161 | if (count == 0) { | |
1162 | serial->curr_rx_urb_idx++; | |
1163 | if (serial->curr_rx_urb_idx >= serial->num_rx_urbs) | |
1164 | serial->curr_rx_urb_idx = 0; | |
1165 | hso_resubmit_rx_bulk_urb(serial, curr_urb); | |
1166 | } | |
1167 | } | |
1168 | } | |
1169 | ||
1170 | static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial) | |
1171 | { | |
1172 | int count = 0; | |
1173 | struct urb *urb; | |
1174 | ||
1175 | urb = serial->rx_urb[0]; | |
5ce76e77 | 1176 | if (serial->port.count > 0) { |
8ef5ba63 DJB |
1177 | count = put_rxbuf_data(urb, serial); |
1178 | if (count == -1) | |
1179 | return; | |
1180 | } | |
1181 | /* Re issue a read as long as we receive data. */ | |
1182 | ||
1183 | if (count == 0 && ((urb->actual_length != 0) || | |
1184 | (serial->rx_state == RX_PENDING))) { | |
1185 | serial->rx_state = RX_SENT; | |
1186 | hso_mux_serial_read(serial); | |
1187 | } else | |
1188 | serial->rx_state = RX_IDLE; | |
1189 | } | |
1190 | ||
1191 | ||
1192 | /* read callback for Diag and CS port */ | |
1193 | static void hso_std_serial_read_bulk_callback(struct urb *urb) | |
1194 | { | |
1195 | struct hso_serial *serial = urb->context; | |
1196 | int status = urb->status; | |
1197 | ||
95a69117 | 1198 | hso_dbg(0x8, "--- Got serial_read_bulk callback %02x ---\n", status); |
4ccd0bb9 | 1199 | |
8ef5ba63 DJB |
1200 | /* sanity check */ |
1201 | if (!serial) { | |
95a69117 | 1202 | hso_dbg(0x1, "serial == NULL\n"); |
8ef5ba63 | 1203 | return; |
4ccd0bb9 DC |
1204 | } |
1205 | if (status) { | |
68a351c5 | 1206 | handle_usb_error(status, __func__, serial->parent); |
8ef5ba63 DJB |
1207 | return; |
1208 | } | |
1209 | ||
95a69117 | 1210 | hso_dbg(0x1, "Actual length = %d\n", urb->actual_length); |
8ef5ba63 DJB |
1211 | DUMP1(urb->transfer_buffer, urb->actual_length); |
1212 | ||
1213 | /* Anyone listening? */ | |
5ce76e77 | 1214 | if (serial->port.count == 0) |
8ef5ba63 DJB |
1215 | return; |
1216 | ||
4ccd0bb9 DC |
1217 | if (serial->parent->port_spec & HSO_INFO_CRC_BUG) |
1218 | fix_crc_bug(urb, serial->in_endp->wMaxPacketSize); | |
1219 | /* Valid data, handle RX data */ | |
1220 | spin_lock(&serial->serial_lock); | |
1221 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1; | |
1222 | put_rxbuf_data_and_resubmit_bulk_urb(serial); | |
1223 | spin_unlock(&serial->serial_lock); | |
8ef5ba63 DJB |
1224 | } |
1225 | ||
1226 | /* | |
1227 | * This needs to be a tasklet otherwise we will | |
1228 | * end up recursively calling this function. | |
1229 | */ | |
0227abc9 | 1230 | static void hso_unthrottle_tasklet(struct hso_serial *serial) |
8ef5ba63 DJB |
1231 | { |
1232 | unsigned long flags; | |
1233 | ||
1234 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1235 | if ((serial->parent->port_spec & HSO_INTF_MUX)) | |
1236 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); | |
1237 | else | |
1238 | put_rxbuf_data_and_resubmit_bulk_urb(serial); | |
1239 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1240 | } | |
1241 | ||
1242 | static void hso_unthrottle(struct tty_struct *tty) | |
1243 | { | |
30409420 | 1244 | struct hso_serial *serial = tty->driver_data; |
8ef5ba63 DJB |
1245 | |
1246 | tasklet_hi_schedule(&serial->unthrottle_tasklet); | |
1247 | } | |
1248 | ||
72dc1c09 GKH |
1249 | /* open the requested serial port */ |
1250 | static int hso_serial_open(struct tty_struct *tty, struct file *filp) | |
1251 | { | |
1252 | struct hso_serial *serial = get_serial_by_index(tty->index); | |
ab153d84 | 1253 | int result; |
72dc1c09 GKH |
1254 | |
1255 | /* sanity check */ | |
1256 | if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) { | |
e136e303 | 1257 | WARN_ON(1); |
72dc1c09 | 1258 | tty->driver_data = NULL; |
95a69117 | 1259 | hso_dbg(0x1, "Failed to open port\n"); |
72dc1c09 GKH |
1260 | return -ENODEV; |
1261 | } | |
1262 | ||
ab153d84 | 1263 | mutex_lock(&serial->parent->mutex); |
ab153d84 DM |
1264 | result = usb_autopm_get_interface(serial->parent->interface); |
1265 | if (result < 0) | |
72dc1c09 GKH |
1266 | goto err_out; |
1267 | ||
95a69117 | 1268 | hso_dbg(0x1, "Opening %d\n", serial->minor); |
72dc1c09 GKH |
1269 | |
1270 | /* setup */ | |
1271 | tty->driver_data = serial; | |
9f8c0b08 | 1272 | tty_port_tty_set(&serial->port, tty); |
72dc1c09 | 1273 | |
2f9889a2 | 1274 | /* check for port already opened, if not set the termios */ |
5ce76e77 JS |
1275 | serial->port.count++; |
1276 | if (serial->port.count == 1) { | |
8ef5ba63 | 1277 | serial->rx_state = RX_IDLE; |
72dc1c09 GKH |
1278 | /* Force default termio settings */ |
1279 | _hso_serial_set_termios(tty, NULL); | |
8ef5ba63 DJB |
1280 | tasklet_init(&serial->unthrottle_tasklet, |
1281 | (void (*)(unsigned long))hso_unthrottle_tasklet, | |
1282 | (unsigned long)serial); | |
ab153d84 DM |
1283 | result = hso_start_serial_device(serial->parent, GFP_KERNEL); |
1284 | if (result) { | |
72dc1c09 | 1285 | hso_stop_serial_device(serial->parent); |
5ce76e77 | 1286 | serial->port.count--; |
29bd3bc1 OS |
1287 | } else { |
1288 | kref_get(&serial->parent->ref); | |
72dc1c09 GKH |
1289 | } |
1290 | } else { | |
95a69117 | 1291 | hso_dbg(0x1, "Port was already open\n"); |
72dc1c09 GKH |
1292 | } |
1293 | ||
1294 | usb_autopm_put_interface(serial->parent->interface); | |
1295 | ||
1296 | /* done */ | |
ab153d84 | 1297 | if (result) |
20b9d177 | 1298 | hso_serial_tiocmset(tty, TIOCM_RTS | TIOCM_DTR, 0); |
72dc1c09 | 1299 | err_out: |
ab153d84 DM |
1300 | mutex_unlock(&serial->parent->mutex); |
1301 | return result; | |
72dc1c09 GKH |
1302 | } |
1303 | ||
1304 | /* close the requested serial port */ | |
1305 | static void hso_serial_close(struct tty_struct *tty, struct file *filp) | |
1306 | { | |
1307 | struct hso_serial *serial = tty->driver_data; | |
1308 | u8 usb_gone; | |
1309 | ||
95a69117 | 1310 | hso_dbg(0x1, "Closing serial port\n"); |
72dc1c09 | 1311 | |
e136e303 AC |
1312 | /* Open failed, no close cleanup required */ |
1313 | if (serial == NULL) | |
1314 | return; | |
1315 | ||
ab153d84 | 1316 | mutex_lock(&serial->parent->mutex); |
72dc1c09 GKH |
1317 | usb_gone = serial->parent->usb_gone; |
1318 | ||
1319 | if (!usb_gone) | |
1320 | usb_autopm_get_interface(serial->parent->interface); | |
1321 | ||
1322 | /* reset the rts and dtr */ | |
1323 | /* do the actual close */ | |
5ce76e77 | 1324 | serial->port.count--; |
dcfcb256 | 1325 | |
5ce76e77 JS |
1326 | if (serial->port.count <= 0) { |
1327 | serial->port.count = 0; | |
9f8c0b08 | 1328 | tty_port_tty_set(&serial->port, NULL); |
72dc1c09 GKH |
1329 | if (!usb_gone) |
1330 | hso_stop_serial_device(serial->parent); | |
8ef5ba63 | 1331 | tasklet_kill(&serial->unthrottle_tasklet); |
72dc1c09 | 1332 | } |
8ef5ba63 | 1333 | |
72dc1c09 GKH |
1334 | if (!usb_gone) |
1335 | usb_autopm_put_interface(serial->parent->interface); | |
ab153d84 DM |
1336 | |
1337 | mutex_unlock(&serial->parent->mutex); | |
72dc1c09 GKH |
1338 | } |
1339 | ||
1340 | /* close the requested serial port */ | |
1341 | static int hso_serial_write(struct tty_struct *tty, const unsigned char *buf, | |
1342 | int count) | |
1343 | { | |
30409420 | 1344 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1345 | int space, tx_bytes; |
1346 | unsigned long flags; | |
1347 | ||
1348 | /* sanity check */ | |
1349 | if (serial == NULL) { | |
3981cce6 | 1350 | pr_err("%s: serial is NULL\n", __func__); |
72dc1c09 GKH |
1351 | return -ENODEV; |
1352 | } | |
1353 | ||
1354 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1355 | ||
1356 | space = serial->tx_data_length - serial->tx_buffer_count; | |
1357 | tx_bytes = (count < space) ? count : space; | |
1358 | ||
1359 | if (!tx_bytes) | |
1360 | goto out; | |
1361 | ||
1362 | memcpy(serial->tx_buffer + serial->tx_buffer_count, buf, tx_bytes); | |
1363 | serial->tx_buffer_count += tx_bytes; | |
1364 | ||
1365 | out: | |
1366 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1367 | ||
1368 | hso_kick_transmit(serial); | |
1369 | /* done */ | |
1370 | return tx_bytes; | |
1371 | } | |
1372 | ||
1373 | /* how much room is there for writing */ | |
1374 | static int hso_serial_write_room(struct tty_struct *tty) | |
1375 | { | |
30409420 | 1376 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1377 | int room; |
1378 | unsigned long flags; | |
1379 | ||
1380 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1381 | room = serial->tx_data_length - serial->tx_buffer_count; | |
1382 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1383 | ||
1384 | /* return free room */ | |
1385 | return room; | |
1386 | } | |
1387 | ||
29bd3bc1 OS |
1388 | static void hso_serial_cleanup(struct tty_struct *tty) |
1389 | { | |
1390 | struct hso_serial *serial = tty->driver_data; | |
1391 | ||
1392 | if (!serial) | |
1393 | return; | |
1394 | ||
1395 | kref_put(&serial->parent->ref, hso_serial_ref_free); | |
1396 | } | |
1397 | ||
72dc1c09 GKH |
1398 | /* setup the term */ |
1399 | static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old) | |
1400 | { | |
30409420 | 1401 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1402 | unsigned long flags; |
1403 | ||
1404 | if (old) | |
95a69117 JP |
1405 | hso_dbg(0x16, "Termios called with: cflags new[%d] - old[%d]\n", |
1406 | tty->termios.c_cflag, old->c_cflag); | |
72dc1c09 GKH |
1407 | |
1408 | /* the actual setup */ | |
1409 | spin_lock_irqsave(&serial->serial_lock, flags); | |
5ce76e77 | 1410 | if (serial->port.count) |
72dc1c09 GKH |
1411 | _hso_serial_set_termios(tty, old); |
1412 | else | |
adc8d746 | 1413 | tty->termios = *old; |
72dc1c09 GKH |
1414 | spin_unlock_irqrestore(&serial->serial_lock, flags); |
1415 | ||
1416 | /* done */ | |
72dc1c09 GKH |
1417 | } |
1418 | ||
1419 | /* how many characters in the buffer */ | |
1420 | static int hso_serial_chars_in_buffer(struct tty_struct *tty) | |
1421 | { | |
30409420 | 1422 | struct hso_serial *serial = tty->driver_data; |
72dc1c09 GKH |
1423 | int chars; |
1424 | unsigned long flags; | |
1425 | ||
1426 | /* sanity check */ | |
1427 | if (serial == NULL) | |
1428 | return 0; | |
1429 | ||
1430 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1431 | chars = serial->tx_buffer_count; | |
1432 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1433 | ||
1434 | return chars; | |
1435 | } | |
0227abc9 HE |
1436 | static int tiocmget_submit_urb(struct hso_serial *serial, |
1437 | struct hso_tiocmget *tiocmget, | |
1438 | struct usb_device *usb) | |
542f5482 DJB |
1439 | { |
1440 | int result; | |
1441 | ||
1442 | if (serial->parent->usb_gone) | |
1443 | return -ENODEV; | |
1444 | usb_fill_int_urb(tiocmget->urb, usb, | |
1445 | usb_rcvintpipe(usb, | |
1446 | tiocmget->endp-> | |
1447 | bEndpointAddress & 0x7F), | |
1448 | &tiocmget->serial_state_notification, | |
1449 | sizeof(struct hso_serial_state_notification), | |
1450 | tiocmget_intr_callback, serial, | |
1451 | tiocmget->endp->bInterval); | |
1452 | result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC); | |
1453 | if (result) { | |
1454 | dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__, | |
1455 | result); | |
1456 | } | |
1457 | return result; | |
1458 | ||
1459 | } | |
1460 | ||
1461 | static void tiocmget_intr_callback(struct urb *urb) | |
1462 | { | |
1463 | struct hso_serial *serial = urb->context; | |
1464 | struct hso_tiocmget *tiocmget; | |
1465 | int status = urb->status; | |
1466 | u16 UART_state_bitmap, prev_UART_state_bitmap; | |
1467 | struct uart_icount *icount; | |
1468 | struct hso_serial_state_notification *serial_state_notification; | |
1469 | struct usb_device *usb; | |
64bea46e | 1470 | struct usb_interface *interface; |
e5e97ee9 | 1471 | int if_num; |
542f5482 DJB |
1472 | |
1473 | /* Sanity checks */ | |
1474 | if (!serial) | |
1475 | return; | |
1476 | if (status) { | |
68a351c5 | 1477 | handle_usb_error(status, __func__, serial->parent); |
542f5482 DJB |
1478 | return; |
1479 | } | |
e5e97ee9 DW |
1480 | |
1481 | /* tiocmget is only supported on HSO_PORT_MODEM */ | |
542f5482 DJB |
1482 | tiocmget = serial->tiocmget; |
1483 | if (!tiocmget) | |
1484 | return; | |
e5e97ee9 DW |
1485 | BUG_ON((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM); |
1486 | ||
542f5482 | 1487 | usb = serial->parent->usb; |
64bea46e AM |
1488 | interface = serial->parent->interface; |
1489 | ||
1490 | if_num = interface->cur_altsetting->desc.bInterfaceNumber; | |
e5e97ee9 DW |
1491 | |
1492 | /* wIndex should be the USB interface number of the port to which the | |
1493 | * notification applies, which should always be the Modem port. | |
1494 | */ | |
542f5482 DJB |
1495 | serial_state_notification = &tiocmget->serial_state_notification; |
1496 | if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE || | |
1497 | serial_state_notification->bNotification != B_NOTIFICATION || | |
1498 | le16_to_cpu(serial_state_notification->wValue) != W_VALUE || | |
e5e97ee9 | 1499 | le16_to_cpu(serial_state_notification->wIndex) != if_num || |
542f5482 DJB |
1500 | le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) { |
1501 | dev_warn(&usb->dev, | |
1502 | "hso received invalid serial state notification\n"); | |
1503 | DUMP(serial_state_notification, | |
9ce673d5 | 1504 | sizeof(struct hso_serial_state_notification)); |
542f5482 DJB |
1505 | } else { |
1506 | ||
1507 | UART_state_bitmap = le16_to_cpu(serial_state_notification-> | |
1508 | UART_state_bitmap); | |
1509 | prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap; | |
1510 | icount = &tiocmget->icount; | |
1511 | spin_lock(&serial->serial_lock); | |
1512 | if ((UART_state_bitmap & B_OVERRUN) != | |
1513 | (prev_UART_state_bitmap & B_OVERRUN)) | |
1514 | icount->parity++; | |
1515 | if ((UART_state_bitmap & B_PARITY) != | |
1516 | (prev_UART_state_bitmap & B_PARITY)) | |
1517 | icount->parity++; | |
1518 | if ((UART_state_bitmap & B_FRAMING) != | |
1519 | (prev_UART_state_bitmap & B_FRAMING)) | |
1520 | icount->frame++; | |
1521 | if ((UART_state_bitmap & B_RING_SIGNAL) && | |
1522 | !(prev_UART_state_bitmap & B_RING_SIGNAL)) | |
1523 | icount->rng++; | |
1524 | if ((UART_state_bitmap & B_BREAK) != | |
1525 | (prev_UART_state_bitmap & B_BREAK)) | |
1526 | icount->brk++; | |
1527 | if ((UART_state_bitmap & B_TX_CARRIER) != | |
1528 | (prev_UART_state_bitmap & B_TX_CARRIER)) | |
1529 | icount->dsr++; | |
1530 | if ((UART_state_bitmap & B_RX_CARRIER) != | |
1531 | (prev_UART_state_bitmap & B_RX_CARRIER)) | |
1532 | icount->dcd++; | |
1533 | tiocmget->prev_UART_state_bitmap = UART_state_bitmap; | |
1534 | spin_unlock(&serial->serial_lock); | |
1535 | tiocmget->intr_completed = 1; | |
1536 | wake_up_interruptible(&tiocmget->waitq); | |
1537 | } | |
1538 | memset(serial_state_notification, 0, | |
1539 | sizeof(struct hso_serial_state_notification)); | |
1540 | tiocmget_submit_urb(serial, | |
1541 | tiocmget, | |
1542 | serial->parent->usb); | |
1543 | } | |
1544 | ||
1545 | /* | |
1546 | * next few functions largely stolen from drivers/serial/serial_core.c | |
1547 | */ | |
1548 | /* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
1549 | * - mask passed in arg for lines of interest | |
1550 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
1551 | * Caller should use TIOCGICOUNT to see which one it was | |
1552 | */ | |
1553 | static int | |
1554 | hso_wait_modem_status(struct hso_serial *serial, unsigned long arg) | |
1555 | { | |
1556 | DECLARE_WAITQUEUE(wait, current); | |
1557 | struct uart_icount cprev, cnow; | |
1558 | struct hso_tiocmget *tiocmget; | |
1559 | int ret; | |
1560 | ||
1561 | tiocmget = serial->tiocmget; | |
1562 | if (!tiocmget) | |
1563 | return -ENOENT; | |
1564 | /* | |
1565 | * note the counters on entry | |
1566 | */ | |
1567 | spin_lock_irq(&serial->serial_lock); | |
1568 | memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount)); | |
1569 | spin_unlock_irq(&serial->serial_lock); | |
1570 | add_wait_queue(&tiocmget->waitq, &wait); | |
1571 | for (;;) { | |
1572 | spin_lock_irq(&serial->serial_lock); | |
1573 | memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount)); | |
1574 | spin_unlock_irq(&serial->serial_lock); | |
1575 | set_current_state(TASK_INTERRUPTIBLE); | |
1576 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1577 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1578 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) { | |
1579 | ret = 0; | |
1580 | break; | |
1581 | } | |
1582 | schedule(); | |
1583 | /* see if a signal did it */ | |
1584 | if (signal_pending(current)) { | |
1585 | ret = -ERESTARTSYS; | |
1586 | break; | |
1587 | } | |
1588 | cprev = cnow; | |
1589 | } | |
50462ce0 | 1590 | __set_current_state(TASK_RUNNING); |
542f5482 DJB |
1591 | remove_wait_queue(&tiocmget->waitq, &wait); |
1592 | ||
1593 | return ret; | |
1594 | } | |
1595 | ||
1596 | /* | |
1597 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
1598 | * Return: write counters to the user passed counter struct | |
1599 | * NB: both 1->0 and 0->1 transitions are counted except for | |
1600 | * RI where only 0->1 is counted. | |
1601 | */ | |
0bca1b91 AC |
1602 | static int hso_get_count(struct tty_struct *tty, |
1603 | struct serial_icounter_struct *icount) | |
542f5482 | 1604 | { |
542f5482 | 1605 | struct uart_icount cnow; |
30409420 | 1606 | struct hso_serial *serial = tty->driver_data; |
542f5482 DJB |
1607 | struct hso_tiocmget *tiocmget = serial->tiocmget; |
1608 | ||
22ad7499 | 1609 | memset(icount, 0, sizeof(struct serial_icounter_struct)); |
7011e660 | 1610 | |
542f5482 DJB |
1611 | if (!tiocmget) |
1612 | return -ENOENT; | |
1613 | spin_lock_irq(&serial->serial_lock); | |
1614 | memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount)); | |
1615 | spin_unlock_irq(&serial->serial_lock); | |
1616 | ||
0bca1b91 AC |
1617 | icount->cts = cnow.cts; |
1618 | icount->dsr = cnow.dsr; | |
1619 | icount->rng = cnow.rng; | |
1620 | icount->dcd = cnow.dcd; | |
1621 | icount->rx = cnow.rx; | |
1622 | icount->tx = cnow.tx; | |
1623 | icount->frame = cnow.frame; | |
1624 | icount->overrun = cnow.overrun; | |
1625 | icount->parity = cnow.parity; | |
1626 | icount->brk = cnow.brk; | |
1627 | icount->buf_overrun = cnow.buf_overrun; | |
542f5482 | 1628 | |
0bca1b91 | 1629 | return 0; |
542f5482 DJB |
1630 | } |
1631 | ||
72dc1c09 | 1632 | |
60b33c13 | 1633 | static int hso_serial_tiocmget(struct tty_struct *tty) |
72dc1c09 | 1634 | { |
542f5482 | 1635 | int retval; |
30409420 | 1636 | struct hso_serial *serial = tty->driver_data; |
542f5482 DJB |
1637 | struct hso_tiocmget *tiocmget; |
1638 | u16 UART_state_bitmap; | |
72dc1c09 GKH |
1639 | |
1640 | /* sanity check */ | |
1641 | if (!serial) { | |
95a69117 | 1642 | hso_dbg(0x1, "no tty structures\n"); |
72dc1c09 GKH |
1643 | return -EINVAL; |
1644 | } | |
542f5482 DJB |
1645 | spin_lock_irq(&serial->serial_lock); |
1646 | retval = ((serial->rts_state) ? TIOCM_RTS : 0) | | |
72dc1c09 | 1647 | ((serial->dtr_state) ? TIOCM_DTR : 0); |
542f5482 DJB |
1648 | tiocmget = serial->tiocmget; |
1649 | if (tiocmget) { | |
1650 | ||
1651 | UART_state_bitmap = le16_to_cpu( | |
1652 | tiocmget->prev_UART_state_bitmap); | |
1653 | if (UART_state_bitmap & B_RING_SIGNAL) | |
1654 | retval |= TIOCM_RNG; | |
1655 | if (UART_state_bitmap & B_RX_CARRIER) | |
1656 | retval |= TIOCM_CD; | |
1657 | if (UART_state_bitmap & B_TX_CARRIER) | |
1658 | retval |= TIOCM_DSR; | |
1659 | } | |
1660 | spin_unlock_irq(&serial->serial_lock); | |
1661 | return retval; | |
72dc1c09 GKH |
1662 | } |
1663 | ||
20b9d177 | 1664 | static int hso_serial_tiocmset(struct tty_struct *tty, |
72dc1c09 GKH |
1665 | unsigned int set, unsigned int clear) |
1666 | { | |
1667 | int val = 0; | |
1668 | unsigned long flags; | |
1669 | int if_num; | |
30409420 | 1670 | struct hso_serial *serial = tty->driver_data; |
64bea46e | 1671 | struct usb_interface *interface; |
72dc1c09 GKH |
1672 | |
1673 | /* sanity check */ | |
1674 | if (!serial) { | |
95a69117 | 1675 | hso_dbg(0x1, "no tty structures\n"); |
72dc1c09 GKH |
1676 | return -EINVAL; |
1677 | } | |
0e0367e9 JD |
1678 | |
1679 | if ((serial->parent->port_spec & HSO_PORT_MASK) != HSO_PORT_MODEM) | |
1680 | return -EINVAL; | |
1681 | ||
64bea46e AM |
1682 | interface = serial->parent->interface; |
1683 | if_num = interface->cur_altsetting->desc.bInterfaceNumber; | |
72dc1c09 GKH |
1684 | |
1685 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1686 | if (set & TIOCM_RTS) | |
1687 | serial->rts_state = 1; | |
1688 | if (set & TIOCM_DTR) | |
1689 | serial->dtr_state = 1; | |
1690 | ||
1691 | if (clear & TIOCM_RTS) | |
1692 | serial->rts_state = 0; | |
1693 | if (clear & TIOCM_DTR) | |
1694 | serial->dtr_state = 0; | |
1695 | ||
1696 | if (serial->dtr_state) | |
1697 | val |= 0x01; | |
1698 | if (serial->rts_state) | |
1699 | val |= 0x02; | |
1700 | ||
1701 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1702 | ||
1703 | return usb_control_msg(serial->parent->usb, | |
1704 | usb_rcvctrlpipe(serial->parent->usb, 0), 0x22, | |
1705 | 0x21, val, if_num, NULL, 0, | |
1706 | USB_CTRL_SET_TIMEOUT); | |
1707 | } | |
1708 | ||
6caa76b7 | 1709 | static int hso_serial_ioctl(struct tty_struct *tty, |
542f5482 DJB |
1710 | unsigned int cmd, unsigned long arg) |
1711 | { | |
30409420 | 1712 | struct hso_serial *serial = tty->driver_data; |
542f5482 | 1713 | int ret = 0; |
95a69117 | 1714 | hso_dbg(0x8, "IOCTL cmd: %d, arg: %ld\n", cmd, arg); |
542f5482 DJB |
1715 | |
1716 | if (!serial) | |
1717 | return -ENODEV; | |
1718 | switch (cmd) { | |
1719 | case TIOCMIWAIT: | |
1720 | ret = hso_wait_modem_status(serial, arg); | |
1721 | break; | |
542f5482 DJB |
1722 | default: |
1723 | ret = -ENOIOCTLCMD; | |
1724 | break; | |
1725 | } | |
1726 | return ret; | |
1727 | } | |
1728 | ||
1729 | ||
72dc1c09 GKH |
1730 | /* starts a transmit */ |
1731 | static void hso_kick_transmit(struct hso_serial *serial) | |
1732 | { | |
1733 | u8 *temp; | |
1734 | unsigned long flags; | |
1735 | int res; | |
1736 | ||
1737 | spin_lock_irqsave(&serial->serial_lock, flags); | |
1738 | if (!serial->tx_buffer_count) | |
1739 | goto out; | |
1740 | ||
1741 | if (serial->tx_urb_used) | |
1742 | goto out; | |
1743 | ||
1744 | /* Wakeup USB interface if necessary */ | |
1745 | if (hso_get_activity(serial->parent) == -EAGAIN) | |
1746 | goto out; | |
1747 | ||
1748 | /* Switch pointers around to avoid memcpy */ | |
1749 | temp = serial->tx_buffer; | |
1750 | serial->tx_buffer = serial->tx_data; | |
1751 | serial->tx_data = temp; | |
1752 | serial->tx_data_count = serial->tx_buffer_count; | |
1753 | serial->tx_buffer_count = 0; | |
1754 | ||
1755 | /* If temp is set, it means we switched buffers */ | |
1756 | if (temp && serial->write_data) { | |
1757 | res = serial->write_data(serial); | |
1758 | if (res >= 0) | |
1759 | serial->tx_urb_used = 1; | |
1760 | } | |
1761 | out: | |
1762 | spin_unlock_irqrestore(&serial->serial_lock, flags); | |
1763 | } | |
1764 | ||
1765 | /* make a request (for reading and writing data to muxed serial port) */ | |
1766 | static int mux_device_request(struct hso_serial *serial, u8 type, u16 port, | |
1767 | struct urb *ctrl_urb, | |
1768 | struct usb_ctrlrequest *ctrl_req, | |
1769 | u8 *ctrl_urb_data, u32 size) | |
1770 | { | |
1771 | int result; | |
1772 | int pipe; | |
1773 | ||
1774 | /* Sanity check */ | |
1775 | if (!serial || !ctrl_urb || !ctrl_req) { | |
3981cce6 | 1776 | pr_err("%s: Wrong arguments\n", __func__); |
72dc1c09 GKH |
1777 | return -EINVAL; |
1778 | } | |
1779 | ||
1780 | /* initialize */ | |
1781 | ctrl_req->wValue = 0; | |
b74f62c1 DJB |
1782 | ctrl_req->wIndex = cpu_to_le16(hso_port_to_mux(port)); |
1783 | ctrl_req->wLength = cpu_to_le16(size); | |
72dc1c09 GKH |
1784 | |
1785 | if (type == USB_CDC_GET_ENCAPSULATED_RESPONSE) { | |
1786 | /* Reading command */ | |
1787 | ctrl_req->bRequestType = USB_DIR_IN | | |
1788 | USB_TYPE_OPTION_VENDOR | | |
1789 | USB_RECIP_INTERFACE; | |
1790 | ctrl_req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE; | |
1791 | pipe = usb_rcvctrlpipe(serial->parent->usb, 0); | |
1792 | } else { | |
1793 | /* Writing command */ | |
1794 | ctrl_req->bRequestType = USB_DIR_OUT | | |
1795 | USB_TYPE_OPTION_VENDOR | | |
1796 | USB_RECIP_INTERFACE; | |
1797 | ctrl_req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND; | |
1798 | pipe = usb_sndctrlpipe(serial->parent->usb, 0); | |
1799 | } | |
1800 | /* syslog */ | |
95a69117 JP |
1801 | hso_dbg(0x2, "%s command (%02x) len: %d, port: %d\n", |
1802 | type == USB_CDC_GET_ENCAPSULATED_RESPONSE ? "Read" : "Write", | |
1803 | ctrl_req->bRequestType, ctrl_req->wLength, port); | |
72dc1c09 GKH |
1804 | |
1805 | /* Load ctrl urb */ | |
1806 | ctrl_urb->transfer_flags = 0; | |
1807 | usb_fill_control_urb(ctrl_urb, | |
1808 | serial->parent->usb, | |
1809 | pipe, | |
1810 | (u8 *) ctrl_req, | |
1811 | ctrl_urb_data, size, ctrl_callback, serial); | |
1812 | /* Send it on merry way */ | |
1813 | result = usb_submit_urb(ctrl_urb, GFP_ATOMIC); | |
1814 | if (result) { | |
1815 | dev_err(&ctrl_urb->dev->dev, | |
8a5c9c49 | 1816 | "%s failed submit ctrl_urb %d type %d\n", __func__, |
72dc1c09 GKH |
1817 | result, type); |
1818 | return result; | |
1819 | } | |
1820 | ||
1821 | /* done */ | |
1822 | return size; | |
1823 | } | |
1824 | ||
1825 | /* called by intr_callback when read occurs */ | |
1826 | static int hso_mux_serial_read(struct hso_serial *serial) | |
1827 | { | |
1828 | if (!serial) | |
1829 | return -EINVAL; | |
1830 | ||
1831 | /* clean data */ | |
1832 | memset(serial->rx_data[0], 0, CTRL_URB_RX_SIZE); | |
1833 | /* make the request */ | |
1834 | ||
1835 | if (serial->num_rx_urbs != 1) { | |
1836 | dev_err(&serial->parent->interface->dev, | |
1837 | "ERROR: mux'd reads with multiple buffers " | |
1838 | "not possible\n"); | |
1839 | return 0; | |
1840 | } | |
1841 | return mux_device_request(serial, | |
1842 | USB_CDC_GET_ENCAPSULATED_RESPONSE, | |
1843 | serial->parent->port_spec & HSO_PORT_MASK, | |
1844 | serial->rx_urb[0], | |
1845 | &serial->ctrl_req_rx, | |
1846 | serial->rx_data[0], serial->rx_data_length); | |
1847 | } | |
1848 | ||
1849 | /* used for muxed serial port callback (muxed serial read) */ | |
1850 | static void intr_callback(struct urb *urb) | |
1851 | { | |
1852 | struct hso_shared_int *shared_int = urb->context; | |
1853 | struct hso_serial *serial; | |
1854 | unsigned char *port_req; | |
1855 | int status = urb->status; | |
1856 | int i; | |
1857 | ||
1858 | usb_mark_last_busy(urb->dev); | |
1859 | ||
1860 | /* sanity check */ | |
1861 | if (!shared_int) | |
1862 | return; | |
1863 | ||
1864 | /* status check */ | |
1865 | if (status) { | |
68a351c5 | 1866 | handle_usb_error(status, __func__, NULL); |
72dc1c09 GKH |
1867 | return; |
1868 | } | |
95a69117 | 1869 | hso_dbg(0x8, "--- Got intr callback 0x%02X ---\n", status); |
72dc1c09 GKH |
1870 | |
1871 | /* what request? */ | |
1872 | port_req = urb->transfer_buffer; | |
95a69117 | 1873 | hso_dbg(0x8, "port_req = 0x%.2X\n", *port_req); |
72dc1c09 GKH |
1874 | /* loop over all muxed ports to find the one sending this */ |
1875 | for (i = 0; i < 8; i++) { | |
1876 | /* max 8 channels on MUX */ | |
1877 | if (*port_req & (1 << i)) { | |
1878 | serial = get_serial_by_shared_int_and_type(shared_int, | |
1879 | (1 << i)); | |
1880 | if (serial != NULL) { | |
95a69117 JP |
1881 | hso_dbg(0x1, "Pending read interrupt on port %d\n", |
1882 | i); | |
8ef5ba63 | 1883 | spin_lock(&serial->serial_lock); |
f4763e96 | 1884 | if (serial->rx_state == RX_IDLE && |
5ce76e77 | 1885 | serial->port.count > 0) { |
72dc1c09 GKH |
1886 | /* Setup and send a ctrl req read on |
1887 | * port i */ | |
f4763e96 | 1888 | if (!serial->rx_urb_filled[0]) { |
8ef5ba63 DJB |
1889 | serial->rx_state = RX_SENT; |
1890 | hso_mux_serial_read(serial); | |
1891 | } else | |
1892 | serial->rx_state = RX_PENDING; | |
72dc1c09 | 1893 | } else { |
95a69117 JP |
1894 | hso_dbg(0x1, "Already a read pending on port %d or port not open\n", |
1895 | i); | |
72dc1c09 | 1896 | } |
8ef5ba63 | 1897 | spin_unlock(&serial->serial_lock); |
72dc1c09 GKH |
1898 | } |
1899 | } | |
1900 | } | |
1901 | /* Resubmit interrupt urb */ | |
1902 | hso_mux_submit_intr_urb(shared_int, urb->dev, GFP_ATOMIC); | |
1903 | } | |
1904 | ||
1905 | /* called for writing to muxed serial port */ | |
1906 | static int hso_mux_serial_write_data(struct hso_serial *serial) | |
1907 | { | |
1908 | if (NULL == serial) | |
1909 | return -EINVAL; | |
1910 | ||
1911 | return mux_device_request(serial, | |
1912 | USB_CDC_SEND_ENCAPSULATED_COMMAND, | |
1913 | serial->parent->port_spec & HSO_PORT_MASK, | |
1914 | serial->tx_urb, | |
1915 | &serial->ctrl_req_tx, | |
1916 | serial->tx_data, serial->tx_data_count); | |
1917 | } | |
1918 | ||
1919 | /* write callback for Diag and CS port */ | |
1920 | static void hso_std_serial_write_bulk_callback(struct urb *urb) | |
1921 | { | |
1922 | struct hso_serial *serial = urb->context; | |
1923 | int status = urb->status; | |
1924 | ||
1925 | /* sanity check */ | |
1926 | if (!serial) { | |
95a69117 | 1927 | hso_dbg(0x1, "serial == NULL\n"); |
72dc1c09 GKH |
1928 | return; |
1929 | } | |
1930 | ||
1931 | spin_lock(&serial->serial_lock); | |
1932 | serial->tx_urb_used = 0; | |
1933 | spin_unlock(&serial->serial_lock); | |
1934 | if (status) { | |
68a351c5 | 1935 | handle_usb_error(status, __func__, serial->parent); |
72dc1c09 GKH |
1936 | return; |
1937 | } | |
1938 | hso_put_activity(serial->parent); | |
6aad04f2 | 1939 | tty_port_tty_wakeup(&serial->port); |
72dc1c09 GKH |
1940 | hso_kick_transmit(serial); |
1941 | ||
95a69117 | 1942 | hso_dbg(0x1, "\n"); |
72dc1c09 GKH |
1943 | } |
1944 | ||
1945 | /* called for writing diag or CS serial port */ | |
1946 | static int hso_std_serial_write_data(struct hso_serial *serial) | |
1947 | { | |
1948 | int count = serial->tx_data_count; | |
1949 | int result; | |
1950 | ||
1951 | usb_fill_bulk_urb(serial->tx_urb, | |
1952 | serial->parent->usb, | |
1953 | usb_sndbulkpipe(serial->parent->usb, | |
1954 | serial->out_endp-> | |
1955 | bEndpointAddress & 0x7F), | |
1956 | serial->tx_data, serial->tx_data_count, | |
1957 | hso_std_serial_write_bulk_callback, serial); | |
1958 | ||
1959 | result = usb_submit_urb(serial->tx_urb, GFP_ATOMIC); | |
1960 | if (result) { | |
1961 | dev_warn(&serial->parent->usb->dev, | |
1962 | "Failed to submit urb - res %d\n", result); | |
1963 | return result; | |
1964 | } | |
1965 | ||
1966 | return count; | |
1967 | } | |
1968 | ||
1969 | /* callback after read or write on muxed serial port */ | |
1970 | static void ctrl_callback(struct urb *urb) | |
1971 | { | |
1972 | struct hso_serial *serial = urb->context; | |
1973 | struct usb_ctrlrequest *req; | |
1974 | int status = urb->status; | |
1975 | ||
1976 | /* sanity check */ | |
1977 | if (!serial) | |
1978 | return; | |
1979 | ||
1980 | spin_lock(&serial->serial_lock); | |
1981 | serial->tx_urb_used = 0; | |
1982 | spin_unlock(&serial->serial_lock); | |
1983 | if (status) { | |
68a351c5 | 1984 | handle_usb_error(status, __func__, serial->parent); |
72dc1c09 GKH |
1985 | return; |
1986 | } | |
1987 | ||
1988 | /* what request? */ | |
1989 | req = (struct usb_ctrlrequest *)(urb->setup_packet); | |
95a69117 JP |
1990 | hso_dbg(0x8, "--- Got muxed ctrl callback 0x%02X ---\n", status); |
1991 | hso_dbg(0x8, "Actual length of urb = %d\n", urb->actual_length); | |
72dc1c09 GKH |
1992 | DUMP1(urb->transfer_buffer, urb->actual_length); |
1993 | ||
1994 | if (req->bRequestType == | |
1995 | (USB_DIR_IN | USB_TYPE_OPTION_VENDOR | USB_RECIP_INTERFACE)) { | |
1996 | /* response to a read command */ | |
8ef5ba63 DJB |
1997 | serial->rx_urb_filled[0] = 1; |
1998 | spin_lock(&serial->serial_lock); | |
1999 | put_rxbuf_data_and_resubmit_ctrl_urb(serial); | |
2000 | spin_unlock(&serial->serial_lock); | |
72dc1c09 GKH |
2001 | } else { |
2002 | hso_put_activity(serial->parent); | |
6aad04f2 | 2003 | tty_port_tty_wakeup(&serial->port); |
72dc1c09 GKH |
2004 | /* response to a write command */ |
2005 | hso_kick_transmit(serial); | |
2006 | } | |
2007 | } | |
2008 | ||
2009 | /* handle RX data for serial port */ | |
8ef5ba63 | 2010 | static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial) |
72dc1c09 | 2011 | { |
e136e303 | 2012 | struct tty_struct *tty; |
8f9818af | 2013 | int count; |
e136e303 | 2014 | |
72dc1c09 GKH |
2015 | /* Sanity check */ |
2016 | if (urb == NULL || serial == NULL) { | |
95a69117 | 2017 | hso_dbg(0x1, "serial = NULL\n"); |
8ef5ba63 | 2018 | return -2; |
72dc1c09 GKH |
2019 | } |
2020 | ||
9f8c0b08 | 2021 | tty = tty_port_tty_get(&serial->port); |
e136e303 | 2022 | |
97ef38b8 | 2023 | if (tty && tty_throttled(tty)) { |
8f9818af OS |
2024 | tty_kref_put(tty); |
2025 | return -1; | |
2026 | } | |
2027 | ||
72dc1c09 | 2028 | /* Push data to tty */ |
95a69117 | 2029 | hso_dbg(0x1, "data to push to tty\n"); |
8f9818af OS |
2030 | count = tty_buffer_request_room(&serial->port, urb->actual_length); |
2031 | if (count >= urb->actual_length) { | |
2032 | tty_insert_flip_string(&serial->port, urb->transfer_buffer, | |
2033 | urb->actual_length); | |
2e124b4a | 2034 | tty_flip_buffer_push(&serial->port); |
8f9818af OS |
2035 | } else { |
2036 | dev_warn(&serial->parent->usb->dev, | |
2037 | "dropping data, %d bytes lost\n", urb->actual_length); | |
72dc1c09 | 2038 | } |
8f9818af | 2039 | |
2e124b4a JS |
2040 | tty_kref_put(tty); |
2041 | ||
8f9818af OS |
2042 | serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0; |
2043 | ||
2044 | return 0; | |
72dc1c09 GKH |
2045 | } |
2046 | ||
8ef5ba63 | 2047 | |
72dc1c09 GKH |
2048 | /* Base driver functions */ |
2049 | ||
2050 | static void hso_log_port(struct hso_device *hso_dev) | |
2051 | { | |
2052 | char *port_type; | |
2053 | char port_dev[20]; | |
2054 | ||
2055 | switch (hso_dev->port_spec & HSO_PORT_MASK) { | |
2056 | case HSO_PORT_CONTROL: | |
2057 | port_type = "Control"; | |
2058 | break; | |
2059 | case HSO_PORT_APP: | |
2060 | port_type = "Application"; | |
2061 | break; | |
2062 | case HSO_PORT_GPS: | |
2063 | port_type = "GPS"; | |
2064 | break; | |
2065 | case HSO_PORT_GPS_CONTROL: | |
2066 | port_type = "GPS control"; | |
2067 | break; | |
2068 | case HSO_PORT_APP2: | |
2069 | port_type = "Application2"; | |
2070 | break; | |
2071 | case HSO_PORT_PCSC: | |
2072 | port_type = "PCSC"; | |
2073 | break; | |
2074 | case HSO_PORT_DIAG: | |
2075 | port_type = "Diagnostic"; | |
2076 | break; | |
2077 | case HSO_PORT_DIAG2: | |
2078 | port_type = "Diagnostic2"; | |
2079 | break; | |
2080 | case HSO_PORT_MODEM: | |
2081 | port_type = "Modem"; | |
2082 | break; | |
2083 | case HSO_PORT_NETWORK: | |
2084 | port_type = "Network"; | |
2085 | break; | |
2086 | default: | |
2087 | port_type = "Unknown"; | |
2088 | break; | |
2089 | } | |
2090 | if ((hso_dev->port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { | |
2091 | sprintf(port_dev, "%s", dev2net(hso_dev)->net->name); | |
2092 | } else | |
2093 | sprintf(port_dev, "/dev/%s%d", tty_filename, | |
2094 | dev2ser(hso_dev)->minor); | |
2095 | ||
2096 | dev_dbg(&hso_dev->interface->dev, "HSO: Found %s port %s\n", | |
2097 | port_type, port_dev); | |
2098 | } | |
2099 | ||
2100 | static int hso_start_net_device(struct hso_device *hso_dev) | |
2101 | { | |
2102 | int i, result = 0; | |
2103 | struct hso_net *hso_net = dev2net(hso_dev); | |
2104 | ||
2105 | if (!hso_net) | |
2106 | return -ENODEV; | |
2107 | ||
2108 | /* send URBs for all read buffers */ | |
2109 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2110 | ||
2111 | /* Prep a receive URB */ | |
2112 | usb_fill_bulk_urb(hso_net->mux_bulk_rx_urb_pool[i], | |
2113 | hso_dev->usb, | |
2114 | usb_rcvbulkpipe(hso_dev->usb, | |
2115 | hso_net->in_endp-> | |
2116 | bEndpointAddress & 0x7F), | |
2117 | hso_net->mux_bulk_rx_buf_pool[i], | |
2118 | MUX_BULK_RX_BUF_SIZE, read_bulk_callback, | |
2119 | hso_net); | |
2120 | ||
2121 | /* Put it out there so the device can send us stuff */ | |
2122 | result = usb_submit_urb(hso_net->mux_bulk_rx_urb_pool[i], | |
2123 | GFP_NOIO); | |
2124 | if (result) | |
2125 | dev_warn(&hso_dev->usb->dev, | |
2126 | "%s failed mux_bulk_rx_urb[%d] %d\n", __func__, | |
2127 | i, result); | |
2128 | } | |
2129 | ||
2130 | return result; | |
2131 | } | |
2132 | ||
2133 | static int hso_stop_net_device(struct hso_device *hso_dev) | |
2134 | { | |
2135 | int i; | |
2136 | struct hso_net *hso_net = dev2net(hso_dev); | |
2137 | ||
2138 | if (!hso_net) | |
2139 | return -ENODEV; | |
2140 | ||
2141 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2142 | if (hso_net->mux_bulk_rx_urb_pool[i]) | |
2143 | usb_kill_urb(hso_net->mux_bulk_rx_urb_pool[i]); | |
2144 | ||
2145 | } | |
2146 | if (hso_net->mux_bulk_tx_urb) | |
2147 | usb_kill_urb(hso_net->mux_bulk_tx_urb); | |
2148 | ||
2149 | return 0; | |
2150 | } | |
2151 | ||
2152 | static int hso_start_serial_device(struct hso_device *hso_dev, gfp_t flags) | |
2153 | { | |
2154 | int i, result = 0; | |
2155 | struct hso_serial *serial = dev2ser(hso_dev); | |
2156 | ||
2157 | if (!serial) | |
2158 | return -ENODEV; | |
2159 | ||
2160 | /* If it is not the MUX port fill in and submit a bulk urb (already | |
2161 | * allocated in hso_serial_start) */ | |
2162 | if (!(serial->parent->port_spec & HSO_INTF_MUX)) { | |
2163 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2164 | usb_fill_bulk_urb(serial->rx_urb[i], | |
2165 | serial->parent->usb, | |
2166 | usb_rcvbulkpipe(serial->parent->usb, | |
2167 | serial->in_endp-> | |
2168 | bEndpointAddress & | |
2169 | 0x7F), | |
2170 | serial->rx_data[i], | |
2171 | serial->rx_data_length, | |
2172 | hso_std_serial_read_bulk_callback, | |
2173 | serial); | |
2174 | result = usb_submit_urb(serial->rx_urb[i], flags); | |
2175 | if (result) { | |
2176 | dev_warn(&serial->parent->usb->dev, | |
2177 | "Failed to submit urb - res %d\n", | |
2178 | result); | |
2179 | break; | |
2180 | } | |
2181 | } | |
2182 | } else { | |
2183 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2184 | if (!serial->shared_int->use_count) { | |
2185 | result = | |
2186 | hso_mux_submit_intr_urb(serial->shared_int, | |
2187 | hso_dev->usb, flags); | |
2188 | } | |
2189 | serial->shared_int->use_count++; | |
2190 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2191 | } | |
542f5482 DJB |
2192 | if (serial->tiocmget) |
2193 | tiocmget_submit_urb(serial, | |
2194 | serial->tiocmget, | |
2195 | serial->parent->usb); | |
72dc1c09 GKH |
2196 | return result; |
2197 | } | |
2198 | ||
2199 | static int hso_stop_serial_device(struct hso_device *hso_dev) | |
2200 | { | |
2201 | int i; | |
2202 | struct hso_serial *serial = dev2ser(hso_dev); | |
542f5482 | 2203 | struct hso_tiocmget *tiocmget; |
72dc1c09 GKH |
2204 | |
2205 | if (!serial) | |
2206 | return -ENODEV; | |
2207 | ||
2208 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
8ef5ba63 | 2209 | if (serial->rx_urb[i]) { |
79927679 OS |
2210 | usb_kill_urb(serial->rx_urb[i]); |
2211 | serial->rx_urb_filled[i] = 0; | |
8ef5ba63 | 2212 | } |
72dc1c09 | 2213 | } |
8ef5ba63 | 2214 | serial->curr_rx_urb_idx = 0; |
72dc1c09 GKH |
2215 | |
2216 | if (serial->tx_urb) | |
2217 | usb_kill_urb(serial->tx_urb); | |
2218 | ||
2219 | if (serial->shared_int) { | |
2220 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2221 | if (serial->shared_int->use_count && | |
2222 | (--serial->shared_int->use_count == 0)) { | |
2223 | struct urb *urb; | |
2224 | ||
2225 | urb = serial->shared_int->shared_intr_urb; | |
2226 | if (urb) | |
2227 | usb_kill_urb(urb); | |
2228 | } | |
2229 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2230 | } | |
542f5482 DJB |
2231 | tiocmget = serial->tiocmget; |
2232 | if (tiocmget) { | |
2233 | wake_up_interruptible(&tiocmget->waitq); | |
2234 | usb_kill_urb(tiocmget->urb); | |
2235 | } | |
72dc1c09 GKH |
2236 | |
2237 | return 0; | |
2238 | } | |
2239 | ||
69b377b3 | 2240 | static void hso_serial_tty_unregister(struct hso_serial *serial) |
72dc1c09 | 2241 | { |
72dc1c09 | 2242 | tty_unregister_device(tty_drv, serial->minor); |
69b377b3 OS |
2243 | } |
2244 | ||
2245 | static void hso_serial_common_free(struct hso_serial *serial) | |
2246 | { | |
2247 | int i; | |
72dc1c09 GKH |
2248 | |
2249 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2250 | /* unlink and free RX URB */ | |
2251 | usb_free_urb(serial->rx_urb[i]); | |
2252 | /* free the RX buffer */ | |
2253 | kfree(serial->rx_data[i]); | |
2254 | } | |
2255 | ||
2256 | /* unlink and free TX URB */ | |
2257 | usb_free_urb(serial->tx_urb); | |
295fc56f | 2258 | kfree(serial->tx_buffer); |
72dc1c09 | 2259 | kfree(serial->tx_data); |
191c5f10 | 2260 | tty_port_destroy(&serial->port); |
72dc1c09 GKH |
2261 | } |
2262 | ||
2263 | static int hso_serial_common_create(struct hso_serial *serial, int num_urbs, | |
2264 | int rx_size, int tx_size) | |
2265 | { | |
2266 | struct device *dev; | |
2267 | int minor; | |
2268 | int i; | |
2269 | ||
191c5f10 JS |
2270 | tty_port_init(&serial->port); |
2271 | ||
72dc1c09 GKH |
2272 | minor = get_free_serial_index(); |
2273 | if (minor < 0) | |
2274 | goto exit; | |
2275 | ||
2276 | /* register our minor number */ | |
4134069f TI |
2277 | serial->parent->dev = tty_port_register_device_attr(&serial->port, |
2278 | tty_drv, minor, &serial->parent->interface->dev, | |
2279 | serial->parent, hso_serial_dev_groups); | |
72dc1c09 | 2280 | dev = serial->parent->dev; |
72dc1c09 GKH |
2281 | |
2282 | /* fill in specific data for later use */ | |
2283 | serial->minor = minor; | |
2284 | serial->magic = HSO_SERIAL_MAGIC; | |
2285 | spin_lock_init(&serial->serial_lock); | |
2286 | serial->num_rx_urbs = num_urbs; | |
2287 | ||
2288 | /* RX, allocate urb and initialize */ | |
2289 | ||
2290 | /* prepare our RX buffer */ | |
2291 | serial->rx_data_length = rx_size; | |
2292 | for (i = 0; i < serial->num_rx_urbs; i++) { | |
2293 | serial->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL); | |
12800ea9 | 2294 | if (!serial->rx_urb[i]) |
72dc1c09 | 2295 | goto exit; |
72dc1c09 GKH |
2296 | serial->rx_urb[i]->transfer_buffer = NULL; |
2297 | serial->rx_urb[i]->transfer_buffer_length = 0; | |
2298 | serial->rx_data[i] = kzalloc(serial->rx_data_length, | |
2299 | GFP_KERNEL); | |
38673c82 | 2300 | if (!serial->rx_data[i]) |
72dc1c09 | 2301 | goto exit; |
72dc1c09 GKH |
2302 | } |
2303 | ||
2304 | /* TX, allocate urb and initialize */ | |
2305 | serial->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
12800ea9 | 2306 | if (!serial->tx_urb) |
72dc1c09 | 2307 | goto exit; |
72dc1c09 GKH |
2308 | serial->tx_urb->transfer_buffer = NULL; |
2309 | serial->tx_urb->transfer_buffer_length = 0; | |
2310 | /* prepare our TX buffer */ | |
2311 | serial->tx_data_count = 0; | |
2312 | serial->tx_buffer_count = 0; | |
2313 | serial->tx_data_length = tx_size; | |
2314 | serial->tx_data = kzalloc(serial->tx_data_length, GFP_KERNEL); | |
38673c82 | 2315 | if (!serial->tx_data) |
72dc1c09 | 2316 | goto exit; |
38673c82 | 2317 | |
72dc1c09 | 2318 | serial->tx_buffer = kzalloc(serial->tx_data_length, GFP_KERNEL); |
38673c82 | 2319 | if (!serial->tx_buffer) |
72dc1c09 | 2320 | goto exit; |
72dc1c09 GKH |
2321 | |
2322 | return 0; | |
2323 | exit: | |
69b377b3 | 2324 | hso_serial_tty_unregister(serial); |
72dc1c09 GKH |
2325 | hso_serial_common_free(serial); |
2326 | return -1; | |
2327 | } | |
2328 | ||
72dc1c09 GKH |
2329 | /* Creates a general hso device */ |
2330 | static struct hso_device *hso_create_device(struct usb_interface *intf, | |
2331 | int port_spec) | |
2332 | { | |
2333 | struct hso_device *hso_dev; | |
2334 | ||
2335 | hso_dev = kzalloc(sizeof(*hso_dev), GFP_ATOMIC); | |
2336 | if (!hso_dev) | |
2337 | return NULL; | |
2338 | ||
2339 | hso_dev->port_spec = port_spec; | |
2340 | hso_dev->usb = interface_to_usbdev(intf); | |
2341 | hso_dev->interface = intf; | |
2342 | kref_init(&hso_dev->ref); | |
ab153d84 DM |
2343 | mutex_init(&hso_dev->mutex); |
2344 | ||
72dc1c09 GKH |
2345 | INIT_WORK(&hso_dev->async_get_intf, async_get_intf); |
2346 | INIT_WORK(&hso_dev->async_put_intf, async_put_intf); | |
2347 | ||
2348 | return hso_dev; | |
2349 | } | |
2350 | ||
2351 | /* Removes a network device in the network device table */ | |
2352 | static int remove_net_device(struct hso_device *hso_dev) | |
2353 | { | |
2354 | int i; | |
2355 | ||
2356 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2357 | if (network_table[i] == hso_dev) { | |
2358 | network_table[i] = NULL; | |
2359 | break; | |
2360 | } | |
2361 | } | |
2362 | if (i == HSO_MAX_NET_DEVICES) | |
2363 | return -1; | |
2364 | return 0; | |
2365 | } | |
2366 | ||
2367 | /* Frees our network device */ | |
2368 | static void hso_free_net_device(struct hso_device *hso_dev) | |
2369 | { | |
2370 | int i; | |
2371 | struct hso_net *hso_net = dev2net(hso_dev); | |
2372 | ||
2373 | if (!hso_net) | |
2374 | return; | |
2375 | ||
3b7d2b31 JD |
2376 | remove_net_device(hso_net->parent); |
2377 | ||
5e2cd082 | 2378 | if (hso_net->net) |
3b7d2b31 | 2379 | unregister_netdev(hso_net->net); |
3b7d2b31 | 2380 | |
72dc1c09 GKH |
2381 | /* start freeing */ |
2382 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2383 | usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]); | |
2384 | kfree(hso_net->mux_bulk_rx_buf_pool[i]); | |
3b7d2b31 | 2385 | hso_net->mux_bulk_rx_buf_pool[i] = NULL; |
72dc1c09 GKH |
2386 | } |
2387 | usb_free_urb(hso_net->mux_bulk_tx_urb); | |
2388 | kfree(hso_net->mux_bulk_tx_buf); | |
3b7d2b31 | 2389 | hso_net->mux_bulk_tx_buf = NULL; |
ab153d84 | 2390 | |
5e2cd082 GKH |
2391 | if (hso_net->net) |
2392 | free_netdev(hso_net->net); | |
2393 | ||
e44578ea | 2394 | kfree(hso_dev); |
72dc1c09 GKH |
2395 | } |
2396 | ||
c266cb4e SH |
2397 | static const struct net_device_ops hso_netdev_ops = { |
2398 | .ndo_open = hso_net_open, | |
2399 | .ndo_stop = hso_net_close, | |
2400 | .ndo_start_xmit = hso_net_start_xmit, | |
2401 | .ndo_tx_timeout = hso_net_tx_timeout, | |
2402 | }; | |
2403 | ||
72dc1c09 GKH |
2404 | /* initialize the network interface */ |
2405 | static void hso_net_init(struct net_device *net) | |
2406 | { | |
2407 | struct hso_net *hso_net = netdev_priv(net); | |
2408 | ||
95a69117 | 2409 | hso_dbg(0x1, "sizeof hso_net is %zu\n", sizeof(*hso_net)); |
72dc1c09 GKH |
2410 | |
2411 | /* fill in the other fields */ | |
c266cb4e | 2412 | net->netdev_ops = &hso_netdev_ops; |
72dc1c09 GKH |
2413 | net->watchdog_timeo = HSO_NET_TX_TIMEOUT; |
2414 | net->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST; | |
2415 | net->type = ARPHRD_NONE; | |
2416 | net->mtu = DEFAULT_MTU - 14; | |
2417 | net->tx_queue_len = 10; | |
7ad24ea4 | 2418 | net->ethtool_ops = &ops; |
72dc1c09 GKH |
2419 | |
2420 | /* and initialize the semaphore */ | |
2421 | spin_lock_init(&hso_net->net_lock); | |
2422 | } | |
2423 | ||
2424 | /* Adds a network device in the network device table */ | |
2425 | static int add_net_device(struct hso_device *hso_dev) | |
2426 | { | |
2427 | int i; | |
2428 | ||
2429 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
2430 | if (network_table[i] == NULL) { | |
2431 | network_table[i] = hso_dev; | |
2432 | break; | |
2433 | } | |
2434 | } | |
2435 | if (i == HSO_MAX_NET_DEVICES) | |
2436 | return -1; | |
2437 | return 0; | |
2438 | } | |
2439 | ||
19d337df | 2440 | static int hso_rfkill_set_block(void *data, bool blocked) |
72dc1c09 GKH |
2441 | { |
2442 | struct hso_device *hso_dev = data; | |
19d337df | 2443 | int enabled = !blocked; |
72dc1c09 GKH |
2444 | int rv; |
2445 | ||
ab153d84 | 2446 | mutex_lock(&hso_dev->mutex); |
72dc1c09 GKH |
2447 | if (hso_dev->usb_gone) |
2448 | rv = 0; | |
2449 | else | |
2450 | rv = usb_control_msg(hso_dev->usb, usb_rcvctrlpipe(hso_dev->usb, 0), | |
2451 | enabled ? 0x82 : 0x81, 0x40, 0, 0, NULL, 0, | |
2452 | USB_CTRL_SET_TIMEOUT); | |
ab153d84 | 2453 | mutex_unlock(&hso_dev->mutex); |
72dc1c09 GKH |
2454 | return rv; |
2455 | } | |
2456 | ||
19d337df JB |
2457 | static const struct rfkill_ops hso_rfkill_ops = { |
2458 | .set_block = hso_rfkill_set_block, | |
2459 | }; | |
2460 | ||
72dc1c09 GKH |
2461 | /* Creates and sets up everything for rfkill */ |
2462 | static void hso_create_rfkill(struct hso_device *hso_dev, | |
2463 | struct usb_interface *interface) | |
2464 | { | |
2465 | struct hso_net *hso_net = dev2net(hso_dev); | |
939a9516 | 2466 | struct device *dev = &hso_net->net->dev; |
38121067 | 2467 | static u32 rfkill_counter; |
72dc1c09 | 2468 | |
2e6d01ff | 2469 | snprintf(hso_net->name, sizeof(hso_net->name), "hso-%d", |
38121067 | 2470 | rfkill_counter++); |
19d337df | 2471 | |
2e6d01ff | 2472 | hso_net->rfkill = rfkill_alloc(hso_net->name, |
19d337df JB |
2473 | &interface_to_usbdev(interface)->dev, |
2474 | RFKILL_TYPE_WWAN, | |
2475 | &hso_rfkill_ops, hso_dev); | |
2476 | if (!hso_net->rfkill) { | |
2477 | dev_err(dev, "%s - Out of memory\n", __func__); | |
19d337df JB |
2478 | return; |
2479 | } | |
72dc1c09 | 2480 | if (rfkill_register(hso_net->rfkill) < 0) { |
19d337df | 2481 | rfkill_destroy(hso_net->rfkill); |
939a9516 JM |
2482 | hso_net->rfkill = NULL; |
2483 | dev_err(dev, "%s - Failed to register rfkill\n", __func__); | |
72dc1c09 GKH |
2484 | return; |
2485 | } | |
2486 | } | |
2487 | ||
384912ed MH |
2488 | static struct device_type hso_type = { |
2489 | .name = "wwan", | |
2490 | }; | |
2491 | ||
72dc1c09 | 2492 | /* Creates our network device */ |
0de8ca59 JD |
2493 | static struct hso_device *hso_create_net_device(struct usb_interface *interface, |
2494 | int port_spec) | |
72dc1c09 GKH |
2495 | { |
2496 | int result, i; | |
2497 | struct net_device *net; | |
2498 | struct hso_net *hso_net; | |
2499 | struct hso_device *hso_dev; | |
2500 | ||
0de8ca59 | 2501 | hso_dev = hso_create_device(interface, port_spec); |
72dc1c09 GKH |
2502 | if (!hso_dev) |
2503 | return NULL; | |
2504 | ||
2505 | /* allocate our network device, then we can put in our private data */ | |
2506 | /* call hso_net_init to do the basic initialization */ | |
c835a677 TG |
2507 | net = alloc_netdev(sizeof(struct hso_net), "hso%d", NET_NAME_UNKNOWN, |
2508 | hso_net_init); | |
72dc1c09 GKH |
2509 | if (!net) { |
2510 | dev_err(&interface->dev, "Unable to create ethernet device\n"); | |
2511 | goto exit; | |
2512 | } | |
2513 | ||
2514 | hso_net = netdev_priv(net); | |
2515 | ||
2516 | hso_dev->port_data.dev_net = hso_net; | |
2517 | hso_net->net = net; | |
2518 | hso_net->parent = hso_dev; | |
2519 | ||
2520 | hso_net->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2521 | USB_DIR_IN); | |
2522 | if (!hso_net->in_endp) { | |
2523 | dev_err(&interface->dev, "Can't find BULK IN endpoint\n"); | |
2524 | goto exit; | |
2525 | } | |
2526 | hso_net->out_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2527 | USB_DIR_OUT); | |
2528 | if (!hso_net->out_endp) { | |
2529 | dev_err(&interface->dev, "Can't find BULK OUT endpoint\n"); | |
2530 | goto exit; | |
2531 | } | |
2532 | SET_NETDEV_DEV(net, &interface->dev); | |
384912ed | 2533 | SET_NETDEV_DEVTYPE(net, &hso_type); |
72dc1c09 | 2534 | |
72dc1c09 GKH |
2535 | /* start allocating */ |
2536 | for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { | |
2537 | hso_net->mux_bulk_rx_urb_pool[i] = usb_alloc_urb(0, GFP_KERNEL); | |
12800ea9 | 2538 | if (!hso_net->mux_bulk_rx_urb_pool[i]) |
72dc1c09 | 2539 | goto exit; |
72dc1c09 GKH |
2540 | hso_net->mux_bulk_rx_buf_pool[i] = kzalloc(MUX_BULK_RX_BUF_SIZE, |
2541 | GFP_KERNEL); | |
38673c82 | 2542 | if (!hso_net->mux_bulk_rx_buf_pool[i]) |
72dc1c09 | 2543 | goto exit; |
72dc1c09 GKH |
2544 | } |
2545 | hso_net->mux_bulk_tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
12800ea9 | 2546 | if (!hso_net->mux_bulk_tx_urb) |
72dc1c09 | 2547 | goto exit; |
72dc1c09 | 2548 | hso_net->mux_bulk_tx_buf = kzalloc(MUX_BULK_TX_BUF_SIZE, GFP_KERNEL); |
38673c82 | 2549 | if (!hso_net->mux_bulk_tx_buf) |
72dc1c09 | 2550 | goto exit; |
72dc1c09 GKH |
2551 | |
2552 | add_net_device(hso_dev); | |
2553 | ||
4c761daf AK |
2554 | /* registering our net device */ |
2555 | result = register_netdev(net); | |
2556 | if (result) { | |
2557 | dev_err(&interface->dev, "Failed to register device\n"); | |
2558 | goto exit; | |
2559 | } | |
2560 | ||
72dc1c09 GKH |
2561 | hso_log_port(hso_dev); |
2562 | ||
2563 | hso_create_rfkill(hso_dev, interface); | |
2564 | ||
2565 | return hso_dev; | |
2566 | exit: | |
2567 | hso_free_net_device(hso_dev); | |
2568 | return NULL; | |
2569 | } | |
2570 | ||
542f5482 DJB |
2571 | static void hso_free_tiomget(struct hso_serial *serial) |
2572 | { | |
5b89db0e JJ |
2573 | struct hso_tiocmget *tiocmget; |
2574 | if (!serial) | |
2575 | return; | |
2576 | tiocmget = serial->tiocmget; | |
542f5482 | 2577 | if (tiocmget) { |
5b89db0e JJ |
2578 | usb_free_urb(tiocmget->urb); |
2579 | tiocmget->urb = NULL; | |
542f5482 | 2580 | serial->tiocmget = NULL; |
3b7d2b31 | 2581 | kfree(tiocmget); |
542f5482 DJB |
2582 | } |
2583 | } | |
2584 | ||
72dc1c09 GKH |
2585 | /* Frees an AT channel ( goes for both mux and non-mux ) */ |
2586 | static void hso_free_serial_device(struct hso_device *hso_dev) | |
2587 | { | |
2588 | struct hso_serial *serial = dev2ser(hso_dev); | |
2589 | ||
2590 | if (!serial) | |
2591 | return; | |
72dc1c09 GKH |
2592 | |
2593 | hso_serial_common_free(serial); | |
2594 | ||
2595 | if (serial->shared_int) { | |
2596 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2597 | if (--serial->shared_int->ref_count == 0) | |
2598 | hso_free_shared_int(serial->shared_int); | |
2599 | else | |
2600 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2601 | } | |
542f5482 | 2602 | hso_free_tiomget(serial); |
72dc1c09 | 2603 | kfree(serial); |
e44578ea | 2604 | kfree(hso_dev); |
72dc1c09 GKH |
2605 | } |
2606 | ||
2607 | /* Creates a bulk AT channel */ | |
2608 | static struct hso_device *hso_create_bulk_serial_device( | |
2609 | struct usb_interface *interface, int port) | |
2610 | { | |
2611 | struct hso_device *hso_dev; | |
2612 | struct hso_serial *serial; | |
2613 | int num_urbs; | |
542f5482 | 2614 | struct hso_tiocmget *tiocmget; |
72dc1c09 GKH |
2615 | |
2616 | hso_dev = hso_create_device(interface, port); | |
2617 | if (!hso_dev) | |
2618 | return NULL; | |
2619 | ||
2620 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); | |
2621 | if (!serial) | |
2622 | goto exit; | |
2623 | ||
2624 | serial->parent = hso_dev; | |
2625 | hso_dev->port_data.dev_serial = serial; | |
2626 | ||
58eb17f1 | 2627 | if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) { |
72dc1c09 | 2628 | num_urbs = 2; |
542f5482 DJB |
2629 | serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget), |
2630 | GFP_KERNEL); | |
2631 | /* it isn't going to break our heart if serial->tiocmget | |
2632 | * allocation fails don't bother checking this. | |
2633 | */ | |
2634 | if (serial->tiocmget) { | |
2635 | tiocmget = serial->tiocmget; | |
2636 | tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL); | |
2637 | if (tiocmget->urb) { | |
2638 | mutex_init(&tiocmget->mutex); | |
2639 | init_waitqueue_head(&tiocmget->waitq); | |
2640 | tiocmget->endp = hso_get_ep( | |
2641 | interface, | |
2642 | USB_ENDPOINT_XFER_INT, | |
2643 | USB_DIR_IN); | |
2644 | } else | |
2645 | hso_free_tiomget(serial); | |
2646 | } | |
2647 | } | |
72dc1c09 GKH |
2648 | else |
2649 | num_urbs = 1; | |
2650 | ||
2651 | if (hso_serial_common_create(serial, num_urbs, BULK_URB_RX_SIZE, | |
2652 | BULK_URB_TX_SIZE)) | |
2653 | goto exit; | |
2654 | ||
2655 | serial->in_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, | |
2656 | USB_DIR_IN); | |
2657 | if (!serial->in_endp) { | |
2658 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); | |
e57b641d | 2659 | goto exit2; |
72dc1c09 GKH |
2660 | } |
2661 | ||
2662 | if (! | |
2663 | (serial->out_endp = | |
2664 | hso_get_ep(interface, USB_ENDPOINT_XFER_BULK, USB_DIR_OUT))) { | |
2665 | dev_err(&interface->dev, "Failed to find BULK IN ep\n"); | |
e57b641d | 2666 | goto exit2; |
72dc1c09 GKH |
2667 | } |
2668 | ||
2669 | serial->write_data = hso_std_serial_write_data; | |
2670 | ||
2671 | /* and record this serial */ | |
2672 | set_serial_by_index(serial->minor, serial); | |
2673 | ||
2674 | /* setup the proc dirs and files if needed */ | |
2675 | hso_log_port(hso_dev); | |
2676 | ||
2677 | /* done, return it */ | |
2678 | return hso_dev; | |
e57b641d AB |
2679 | |
2680 | exit2: | |
69b377b3 | 2681 | hso_serial_tty_unregister(serial); |
e57b641d | 2682 | hso_serial_common_free(serial); |
72dc1c09 | 2683 | exit: |
542f5482 | 2684 | hso_free_tiomget(serial); |
72dc1c09 | 2685 | kfree(serial); |
e44578ea | 2686 | kfree(hso_dev); |
72dc1c09 GKH |
2687 | return NULL; |
2688 | } | |
2689 | ||
2690 | /* Creates a multiplexed AT channel */ | |
2691 | static | |
2692 | struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface, | |
2693 | int port, | |
2694 | struct hso_shared_int *mux) | |
2695 | { | |
2696 | struct hso_device *hso_dev; | |
2697 | struct hso_serial *serial; | |
2698 | int port_spec; | |
2699 | ||
2700 | port_spec = HSO_INTF_MUX; | |
2701 | port_spec &= ~HSO_PORT_MASK; | |
2702 | ||
2703 | port_spec |= hso_mux_to_port(port); | |
2704 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NO_PORT) | |
2705 | return NULL; | |
2706 | ||
2707 | hso_dev = hso_create_device(interface, port_spec); | |
2708 | if (!hso_dev) | |
2709 | return NULL; | |
2710 | ||
2711 | serial = kzalloc(sizeof(*serial), GFP_KERNEL); | |
2712 | if (!serial) | |
2713 | goto exit; | |
2714 | ||
2715 | hso_dev->port_data.dev_serial = serial; | |
2716 | serial->parent = hso_dev; | |
2717 | ||
2718 | if (hso_serial_common_create | |
2719 | (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE)) | |
2720 | goto exit; | |
2721 | ||
2722 | serial->tx_data_length--; | |
2723 | serial->write_data = hso_mux_serial_write_data; | |
2724 | ||
2725 | serial->shared_int = mux; | |
2726 | mutex_lock(&serial->shared_int->shared_int_lock); | |
2727 | serial->shared_int->ref_count++; | |
2728 | mutex_unlock(&serial->shared_int->shared_int_lock); | |
2729 | ||
2730 | /* and record this serial */ | |
2731 | set_serial_by_index(serial->minor, serial); | |
2732 | ||
2733 | /* setup the proc dirs and files if needed */ | |
2734 | hso_log_port(hso_dev); | |
2735 | ||
2736 | /* done, return it */ | |
2737 | return hso_dev; | |
2738 | ||
2739 | exit: | |
2740 | if (serial) { | |
2741 | tty_unregister_device(tty_drv, serial->minor); | |
2742 | kfree(serial); | |
2743 | } | |
91ecee68 | 2744 | kfree(hso_dev); |
72dc1c09 GKH |
2745 | return NULL; |
2746 | ||
2747 | } | |
2748 | ||
2749 | static void hso_free_shared_int(struct hso_shared_int *mux) | |
2750 | { | |
2751 | usb_free_urb(mux->shared_intr_urb); | |
2752 | kfree(mux->shared_intr_buf); | |
2753 | mutex_unlock(&mux->shared_int_lock); | |
2754 | kfree(mux); | |
2755 | } | |
2756 | ||
2757 | static | |
2758 | struct hso_shared_int *hso_create_shared_int(struct usb_interface *interface) | |
2759 | { | |
2760 | struct hso_shared_int *mux = kzalloc(sizeof(*mux), GFP_KERNEL); | |
2761 | ||
2762 | if (!mux) | |
2763 | return NULL; | |
2764 | ||
2765 | mux->intr_endp = hso_get_ep(interface, USB_ENDPOINT_XFER_INT, | |
2766 | USB_DIR_IN); | |
2767 | if (!mux->intr_endp) { | |
2768 | dev_err(&interface->dev, "Can't find INT IN endpoint\n"); | |
2769 | goto exit; | |
2770 | } | |
2771 | ||
2772 | mux->shared_intr_urb = usb_alloc_urb(0, GFP_KERNEL); | |
12800ea9 | 2773 | if (!mux->shared_intr_urb) |
72dc1c09 | 2774 | goto exit; |
d9ced80d JD |
2775 | mux->shared_intr_buf = |
2776 | kzalloc(le16_to_cpu(mux->intr_endp->wMaxPacketSize), | |
2777 | GFP_KERNEL); | |
38673c82 | 2778 | if (!mux->shared_intr_buf) |
72dc1c09 | 2779 | goto exit; |
72dc1c09 GKH |
2780 | |
2781 | mutex_init(&mux->shared_int_lock); | |
2782 | ||
2783 | return mux; | |
2784 | ||
2785 | exit: | |
2786 | kfree(mux->shared_intr_buf); | |
2787 | usb_free_urb(mux->shared_intr_urb); | |
2788 | kfree(mux); | |
2789 | return NULL; | |
2790 | } | |
2791 | ||
2792 | /* Gets the port spec for a certain interface */ | |
2793 | static int hso_get_config_data(struct usb_interface *interface) | |
2794 | { | |
2795 | struct usb_device *usbdev = interface_to_usbdev(interface); | |
e75dc677 | 2796 | u8 *config_data = kmalloc(17, GFP_KERNEL); |
64bea46e | 2797 | u32 if_num = interface->cur_altsetting->desc.bInterfaceNumber; |
72dc1c09 GKH |
2798 | s32 result; |
2799 | ||
e75dc677 DG |
2800 | if (!config_data) |
2801 | return -ENOMEM; | |
72dc1c09 GKH |
2802 | if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), |
2803 | 0x86, 0xC0, 0, 0, config_data, 17, | |
2804 | USB_CTRL_SET_TIMEOUT) != 0x11) { | |
e75dc677 | 2805 | kfree(config_data); |
72dc1c09 GKH |
2806 | return -EIO; |
2807 | } | |
2808 | ||
2809 | switch (config_data[if_num]) { | |
2810 | case 0x0: | |
2811 | result = 0; | |
2812 | break; | |
2813 | case 0x1: | |
2814 | result = HSO_PORT_DIAG; | |
2815 | break; | |
2816 | case 0x2: | |
2817 | result = HSO_PORT_GPS; | |
2818 | break; | |
2819 | case 0x3: | |
2820 | result = HSO_PORT_GPS_CONTROL; | |
2821 | break; | |
2822 | case 0x4: | |
2823 | result = HSO_PORT_APP; | |
2824 | break; | |
2825 | case 0x5: | |
2826 | result = HSO_PORT_APP2; | |
2827 | break; | |
2828 | case 0x6: | |
2829 | result = HSO_PORT_CONTROL; | |
2830 | break; | |
2831 | case 0x7: | |
2832 | result = HSO_PORT_NETWORK; | |
2833 | break; | |
2834 | case 0x8: | |
2835 | result = HSO_PORT_MODEM; | |
2836 | break; | |
2837 | case 0x9: | |
2838 | result = HSO_PORT_MSD; | |
2839 | break; | |
2840 | case 0xa: | |
2841 | result = HSO_PORT_PCSC; | |
2842 | break; | |
2843 | case 0xb: | |
2844 | result = HSO_PORT_VOICE; | |
2845 | break; | |
2846 | default: | |
2847 | result = 0; | |
2848 | } | |
2849 | ||
2850 | if (result) | |
2851 | result |= HSO_INTF_BULK; | |
2852 | ||
2853 | if (config_data[16] & 0x1) | |
2854 | result |= HSO_INFO_CRC_BUG; | |
2855 | ||
e75dc677 | 2856 | kfree(config_data); |
72dc1c09 GKH |
2857 | return result; |
2858 | } | |
2859 | ||
2860 | /* called once for each interface upon device insertion */ | |
2861 | static int hso_probe(struct usb_interface *interface, | |
2862 | const struct usb_device_id *id) | |
2863 | { | |
2864 | int mux, i, if_num, port_spec; | |
2865 | unsigned char port_mask; | |
2866 | struct hso_device *hso_dev = NULL; | |
2867 | struct hso_shared_int *shared_int; | |
2868 | struct hso_device *tmp_dev = NULL; | |
2869 | ||
35e57e1b DG |
2870 | if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) { |
2871 | dev_err(&interface->dev, "Not our interface\n"); | |
2872 | return -ENODEV; | |
2873 | } | |
2874 | ||
64bea46e | 2875 | if_num = interface->cur_altsetting->desc.bInterfaceNumber; |
72dc1c09 GKH |
2876 | |
2877 | /* Get the interface/port specification from either driver_info or from | |
2878 | * the device itself */ | |
2879 | if (id->driver_info) | |
2880 | port_spec = ((u32 *)(id->driver_info))[if_num]; | |
2881 | else | |
2882 | port_spec = hso_get_config_data(interface); | |
2883 | ||
72dc1c09 GKH |
2884 | /* Check if we need to switch to alt interfaces prior to port |
2885 | * configuration */ | |
2886 | if (interface->num_altsetting > 1) | |
2887 | usb_set_interface(interface_to_usbdev(interface), if_num, 1); | |
2888 | interface->needs_remote_wakeup = 1; | |
2889 | ||
2890 | /* Allocate new hso device(s) */ | |
2891 | switch (port_spec & HSO_INTF_MASK) { | |
2892 | case HSO_INTF_MUX: | |
2893 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { | |
2894 | /* Create the network device */ | |
2895 | if (!disable_net) { | |
0de8ca59 JD |
2896 | hso_dev = hso_create_net_device(interface, |
2897 | port_spec); | |
72dc1c09 GKH |
2898 | if (!hso_dev) |
2899 | goto exit; | |
2900 | tmp_dev = hso_dev; | |
2901 | } | |
2902 | } | |
2903 | ||
2904 | if (hso_get_mux_ports(interface, &port_mask)) | |
2905 | /* TODO: de-allocate everything */ | |
2906 | goto exit; | |
2907 | ||
2908 | shared_int = hso_create_shared_int(interface); | |
2909 | if (!shared_int) | |
2910 | goto exit; | |
2911 | ||
2912 | for (i = 1, mux = 0; i < 0x100; i = i << 1, mux++) { | |
2913 | if (port_mask & i) { | |
2914 | hso_dev = hso_create_mux_serial_device( | |
2915 | interface, i, shared_int); | |
2916 | if (!hso_dev) | |
2917 | goto exit; | |
2918 | } | |
2919 | } | |
2920 | ||
2921 | if (tmp_dev) | |
2922 | hso_dev = tmp_dev; | |
2923 | break; | |
2924 | ||
2925 | case HSO_INTF_BULK: | |
2926 | /* It's a regular bulk interface */ | |
8e65c0ec FA |
2927 | if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) { |
2928 | if (!disable_net) | |
2929 | hso_dev = | |
2930 | hso_create_net_device(interface, port_spec); | |
2931 | } else { | |
72dc1c09 GKH |
2932 | hso_dev = |
2933 | hso_create_bulk_serial_device(interface, port_spec); | |
8e65c0ec | 2934 | } |
72dc1c09 GKH |
2935 | if (!hso_dev) |
2936 | goto exit; | |
2937 | break; | |
2938 | default: | |
2939 | goto exit; | |
2940 | } | |
2941 | ||
72dc1c09 GKH |
2942 | /* save our data pointer in this device */ |
2943 | usb_set_intfdata(interface, hso_dev); | |
2944 | ||
2945 | /* done */ | |
2946 | return 0; | |
2947 | exit: | |
2948 | hso_free_interface(interface); | |
2949 | return -ENODEV; | |
2950 | } | |
2951 | ||
2952 | /* device removed, cleaning up */ | |
2953 | static void hso_disconnect(struct usb_interface *interface) | |
2954 | { | |
2955 | hso_free_interface(interface); | |
2956 | ||
2957 | /* remove reference of our private data */ | |
2958 | usb_set_intfdata(interface, NULL); | |
72dc1c09 GKH |
2959 | } |
2960 | ||
2961 | static void async_get_intf(struct work_struct *data) | |
2962 | { | |
2963 | struct hso_device *hso_dev = | |
2964 | container_of(data, struct hso_device, async_get_intf); | |
2965 | usb_autopm_get_interface(hso_dev->interface); | |
2966 | } | |
2967 | ||
2968 | static void async_put_intf(struct work_struct *data) | |
2969 | { | |
2970 | struct hso_device *hso_dev = | |
2971 | container_of(data, struct hso_device, async_put_intf); | |
2972 | usb_autopm_put_interface(hso_dev->interface); | |
2973 | } | |
2974 | ||
2975 | static int hso_get_activity(struct hso_device *hso_dev) | |
2976 | { | |
2977 | if (hso_dev->usb->state == USB_STATE_SUSPENDED) { | |
2978 | if (!hso_dev->is_active) { | |
2979 | hso_dev->is_active = 1; | |
2980 | schedule_work(&hso_dev->async_get_intf); | |
2981 | } | |
2982 | } | |
2983 | ||
2984 | if (hso_dev->usb->state != USB_STATE_CONFIGURED) | |
2985 | return -EAGAIN; | |
2986 | ||
2987 | usb_mark_last_busy(hso_dev->usb); | |
2988 | ||
2989 | return 0; | |
2990 | } | |
2991 | ||
2992 | static int hso_put_activity(struct hso_device *hso_dev) | |
2993 | { | |
2994 | if (hso_dev->usb->state != USB_STATE_SUSPENDED) { | |
2995 | if (hso_dev->is_active) { | |
2996 | hso_dev->is_active = 0; | |
2997 | schedule_work(&hso_dev->async_put_intf); | |
2998 | return -EAGAIN; | |
2999 | } | |
3000 | } | |
3001 | hso_dev->is_active = 0; | |
3002 | return 0; | |
3003 | } | |
3004 | ||
3005 | /* called by kernel when we need to suspend device */ | |
3006 | static int hso_suspend(struct usb_interface *iface, pm_message_t message) | |
3007 | { | |
3008 | int i, result; | |
3009 | ||
3010 | /* Stop all serial ports */ | |
3011 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
3012 | if (serial_table[i] && (serial_table[i]->interface == iface)) { | |
3013 | result = hso_stop_serial_device(serial_table[i]); | |
3014 | if (result) | |
3015 | goto out; | |
3016 | } | |
3017 | } | |
3018 | ||
3019 | /* Stop all network ports */ | |
3020 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
3021 | if (network_table[i] && | |
3022 | (network_table[i]->interface == iface)) { | |
3023 | result = hso_stop_net_device(network_table[i]); | |
3024 | if (result) | |
3025 | goto out; | |
3026 | } | |
3027 | } | |
3028 | ||
3029 | out: | |
3030 | return 0; | |
3031 | } | |
3032 | ||
3033 | /* called by kernel when we need to resume device */ | |
3034 | static int hso_resume(struct usb_interface *iface) | |
3035 | { | |
3036 | int i, result = 0; | |
3037 | struct hso_net *hso_net; | |
3038 | ||
3039 | /* Start all serial ports */ | |
3040 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
3041 | if (serial_table[i] && (serial_table[i]->interface == iface)) { | |
5ce76e77 | 3042 | if (dev2ser(serial_table[i])->port.count) { |
72dc1c09 GKH |
3043 | result = |
3044 | hso_start_serial_device(serial_table[i], GFP_NOIO); | |
3045 | hso_kick_transmit(dev2ser(serial_table[i])); | |
3046 | if (result) | |
3047 | goto out; | |
3048 | } | |
3049 | } | |
3050 | } | |
3051 | ||
3052 | /* Start all network ports */ | |
3053 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
3054 | if (network_table[i] && | |
3055 | (network_table[i]->interface == iface)) { | |
3056 | hso_net = dev2net(network_table[i]); | |
89930b7b DJB |
3057 | if (hso_net->flags & IFF_UP) { |
3058 | /* First transmit any lingering data, | |
3059 | then restart the device. */ | |
3060 | if (hso_net->skb_tx_buf) { | |
3061 | dev_dbg(&iface->dev, | |
3062 | "Transmitting" | |
3063 | " lingering data\n"); | |
3064 | hso_net_start_xmit(hso_net->skb_tx_buf, | |
3065 | hso_net->net); | |
3066 | hso_net->skb_tx_buf = NULL; | |
3067 | } | |
3068 | result = hso_start_net_device(network_table[i]); | |
3069 | if (result) | |
3070 | goto out; | |
72dc1c09 | 3071 | } |
72dc1c09 GKH |
3072 | } |
3073 | } | |
3074 | ||
3075 | out: | |
3076 | return result; | |
3077 | } | |
3078 | ||
3079 | static void hso_serial_ref_free(struct kref *ref) | |
3080 | { | |
3081 | struct hso_device *hso_dev = container_of(ref, struct hso_device, ref); | |
3082 | ||
3083 | hso_free_serial_device(hso_dev); | |
3084 | } | |
3085 | ||
3086 | static void hso_free_interface(struct usb_interface *interface) | |
3087 | { | |
f6516b69 | 3088 | struct hso_serial *serial; |
72dc1c09 GKH |
3089 | int i; |
3090 | ||
3091 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { | |
8e95a202 JP |
3092 | if (serial_table[i] && |
3093 | (serial_table[i]->interface == interface)) { | |
f6516b69 OS |
3094 | serial = dev2ser(serial_table[i]); |
3095 | tty_port_tty_hangup(&serial->port, false); | |
3096 | mutex_lock(&serial->parent->mutex); | |
3097 | serial->parent->usb_gone = 1; | |
3098 | mutex_unlock(&serial->parent->mutex); | |
cc491970 OS |
3099 | cancel_work_sync(&serial_table[i]->async_put_intf); |
3100 | cancel_work_sync(&serial_table[i]->async_get_intf); | |
69b377b3 | 3101 | hso_serial_tty_unregister(serial); |
ab153d84 | 3102 | kref_put(&serial_table[i]->ref, hso_serial_ref_free); |
301d3b7e | 3103 | set_serial_by_index(i, NULL); |
72dc1c09 GKH |
3104 | } |
3105 | } | |
3106 | ||
3107 | for (i = 0; i < HSO_MAX_NET_DEVICES; i++) { | |
8e95a202 JP |
3108 | if (network_table[i] && |
3109 | (network_table[i]->interface == interface)) { | |
72dc1c09 GKH |
3110 | struct rfkill *rfk = dev2net(network_table[i])->rfkill; |
3111 | /* hso_stop_net_device doesn't stop the net queue since | |
3112 | * traffic needs to start it again when suspended */ | |
3113 | netif_stop_queue(dev2net(network_table[i])->net); | |
3114 | hso_stop_net_device(network_table[i]); | |
3115 | cancel_work_sync(&network_table[i]->async_put_intf); | |
3116 | cancel_work_sync(&network_table[i]->async_get_intf); | |
19d337df | 3117 | if (rfk) { |
72dc1c09 | 3118 | rfkill_unregister(rfk); |
19d337df JB |
3119 | rfkill_destroy(rfk); |
3120 | } | |
72dc1c09 GKH |
3121 | hso_free_net_device(network_table[i]); |
3122 | } | |
3123 | } | |
3124 | } | |
3125 | ||
3126 | /* Helper functions */ | |
3127 | ||
3128 | /* Get the endpoint ! */ | |
3129 | static struct usb_endpoint_descriptor *hso_get_ep(struct usb_interface *intf, | |
3130 | int type, int dir) | |
3131 | { | |
3132 | int i; | |
3133 | struct usb_host_interface *iface = intf->cur_altsetting; | |
3134 | struct usb_endpoint_descriptor *endp; | |
3135 | ||
3136 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { | |
3137 | endp = &iface->endpoint[i].desc; | |
3138 | if (((endp->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == dir) && | |
f201a8a4 | 3139 | (usb_endpoint_type(endp) == type)) |
72dc1c09 GKH |
3140 | return endp; |
3141 | } | |
3142 | ||
3143 | return NULL; | |
3144 | } | |
3145 | ||
3146 | /* Get the byte that describes which ports are enabled */ | |
3147 | static int hso_get_mux_ports(struct usb_interface *intf, unsigned char *ports) | |
3148 | { | |
3149 | int i; | |
3150 | struct usb_host_interface *iface = intf->cur_altsetting; | |
3151 | ||
3152 | if (iface->extralen == 3) { | |
3153 | *ports = iface->extra[2]; | |
3154 | return 0; | |
3155 | } | |
3156 | ||
3157 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { | |
3158 | if (iface->endpoint[i].extralen == 3) { | |
3159 | *ports = iface->endpoint[i].extra[2]; | |
3160 | return 0; | |
3161 | } | |
3162 | } | |
3163 | ||
3164 | return -1; | |
3165 | } | |
3166 | ||
3167 | /* interrupt urb needs to be submitted, used for serial read of muxed port */ | |
3168 | static int hso_mux_submit_intr_urb(struct hso_shared_int *shared_int, | |
3169 | struct usb_device *usb, gfp_t gfp) | |
3170 | { | |
3171 | int result; | |
3172 | ||
3173 | usb_fill_int_urb(shared_int->shared_intr_urb, usb, | |
3174 | usb_rcvintpipe(usb, | |
3175 | shared_int->intr_endp->bEndpointAddress & 0x7F), | |
3176 | shared_int->shared_intr_buf, | |
d9ced80d | 3177 | 1, |
72dc1c09 GKH |
3178 | intr_callback, shared_int, |
3179 | shared_int->intr_endp->bInterval); | |
3180 | ||
3181 | result = usb_submit_urb(shared_int->shared_intr_urb, gfp); | |
3182 | if (result) | |
8a5c9c49 | 3183 | dev_warn(&usb->dev, "%s failed mux_intr_urb %d\n", __func__, |
72dc1c09 GKH |
3184 | result); |
3185 | ||
3186 | return result; | |
3187 | } | |
3188 | ||
3189 | /* operations setup of the serial interface */ | |
6c59f569 | 3190 | static const struct tty_operations hso_serial_ops = { |
72dc1c09 GKH |
3191 | .open = hso_serial_open, |
3192 | .close = hso_serial_close, | |
3193 | .write = hso_serial_write, | |
3194 | .write_room = hso_serial_write_room, | |
29bd3bc1 | 3195 | .cleanup = hso_serial_cleanup, |
542f5482 | 3196 | .ioctl = hso_serial_ioctl, |
72dc1c09 GKH |
3197 | .set_termios = hso_serial_set_termios, |
3198 | .chars_in_buffer = hso_serial_chars_in_buffer, | |
3199 | .tiocmget = hso_serial_tiocmget, | |
3200 | .tiocmset = hso_serial_tiocmset, | |
0bca1b91 | 3201 | .get_icount = hso_get_count, |
8ef5ba63 | 3202 | .unthrottle = hso_unthrottle |
72dc1c09 GKH |
3203 | }; |
3204 | ||
3205 | static struct usb_driver hso_driver = { | |
3206 | .name = driver_name, | |
3207 | .probe = hso_probe, | |
3208 | .disconnect = hso_disconnect, | |
3209 | .id_table = hso_ids, | |
3210 | .suspend = hso_suspend, | |
3211 | .resume = hso_resume, | |
9c8f92ae | 3212 | .reset_resume = hso_resume, |
72dc1c09 | 3213 | .supports_autosuspend = 1, |
e1f12eb6 | 3214 | .disable_hub_initiated_lpm = 1, |
72dc1c09 GKH |
3215 | }; |
3216 | ||
3217 | static int __init hso_init(void) | |
3218 | { | |
3219 | int i; | |
3220 | int result; | |
3221 | ||
3222 | /* put it in the log */ | |
3981cce6 | 3223 | pr_info("%s\n", version); |
72dc1c09 GKH |
3224 | |
3225 | /* Initialise the serial table semaphore and table */ | |
3226 | spin_lock_init(&serial_table_lock); | |
3227 | for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) | |
3228 | serial_table[i] = NULL; | |
3229 | ||
3230 | /* allocate our driver using the proper amount of supported minors */ | |
3231 | tty_drv = alloc_tty_driver(HSO_SERIAL_TTY_MINORS); | |
3232 | if (!tty_drv) | |
3233 | return -ENOMEM; | |
3234 | ||
3235 | /* fill in all needed values */ | |
72dc1c09 GKH |
3236 | tty_drv->driver_name = driver_name; |
3237 | tty_drv->name = tty_filename; | |
3238 | ||
3239 | /* if major number is provided as parameter, use that one */ | |
3240 | if (tty_major) | |
3241 | tty_drv->major = tty_major; | |
3242 | ||
3243 | tty_drv->minor_start = 0; | |
72dc1c09 GKH |
3244 | tty_drv->type = TTY_DRIVER_TYPE_SERIAL; |
3245 | tty_drv->subtype = SERIAL_TYPE_NORMAL; | |
3246 | tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; | |
3247 | tty_drv->init_termios = tty_std_termios; | |
ac9720c3 | 3248 | hso_init_termios(&tty_drv->init_termios); |
72dc1c09 GKH |
3249 | tty_set_operations(tty_drv, &hso_serial_ops); |
3250 | ||
3251 | /* register the tty driver */ | |
3252 | result = tty_register_driver(tty_drv); | |
3253 | if (result) { | |
3981cce6 JP |
3254 | pr_err("%s - tty_register_driver failed(%d)\n", |
3255 | __func__, result); | |
d230788f | 3256 | goto err_free_tty; |
72dc1c09 GKH |
3257 | } |
3258 | ||
3259 | /* register this module as an usb driver */ | |
3260 | result = usb_register(&hso_driver); | |
3261 | if (result) { | |
3981cce6 | 3262 | pr_err("Could not register hso driver - error: %d\n", result); |
d230788f | 3263 | goto err_unreg_tty; |
72dc1c09 GKH |
3264 | } |
3265 | ||
3266 | /* done */ | |
3267 | return 0; | |
d230788f JS |
3268 | err_unreg_tty: |
3269 | tty_unregister_driver(tty_drv); | |
3270 | err_free_tty: | |
3271 | put_tty_driver(tty_drv); | |
3272 | return result; | |
72dc1c09 GKH |
3273 | } |
3274 | ||
3275 | static void __exit hso_exit(void) | |
3276 | { | |
3981cce6 | 3277 | pr_info("unloaded\n"); |
72dc1c09 GKH |
3278 | |
3279 | tty_unregister_driver(tty_drv); | |
3280 | /* deregister the usb driver */ | |
3281 | usb_deregister(&hso_driver); | |
a23f6ce6 | 3282 | put_tty_driver(tty_drv); |
72dc1c09 GKH |
3283 | } |
3284 | ||
3285 | /* Module definitions */ | |
3286 | module_init(hso_init); | |
3287 | module_exit(hso_exit); | |
3288 | ||
3289 | MODULE_AUTHOR(MOD_AUTHOR); | |
3290 | MODULE_DESCRIPTION(MOD_DESCRIPTION); | |
3291 | MODULE_LICENSE(MOD_LICENSE); | |
72dc1c09 GKH |
3292 | |
3293 | /* change the debug level (eg: insmod hso.ko debug=0x04) */ | |
95a69117 | 3294 | MODULE_PARM_DESC(debug, "debug level mask [0x01 | 0x02 | 0x04 | 0x08 | 0x10]"); |
72dc1c09 GKH |
3295 | module_param(debug, int, S_IRUGO | S_IWUSR); |
3296 | ||
3297 | /* set the major tty number (eg: insmod hso.ko tty_major=245) */ | |
3298 | MODULE_PARM_DESC(tty_major, "Set the major tty number"); | |
3299 | module_param(tty_major, int, S_IRUGO | S_IWUSR); | |
3300 | ||
3301 | /* disable network interface (eg: insmod hso.ko disable_net=1) */ | |
3302 | MODULE_PARM_DESC(disable_net, "Disable the network interface"); | |
3303 | module_param(disable_net, int, S_IRUGO | S_IWUSR); |