Hansjoerg Lipp | 07dc1f9 | 2006-03-26 01:38:37 -0800 | [diff] [blame] | 1 | /* |
| 2 | * USB driver for Gigaset 307x directly or using M105 Data. |
| 3 | * |
| 4 | * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de> |
| 5 | * and Hansjoerg Lipp <hjlipp@web.de>. |
| 6 | * |
| 7 | * This driver was derived from the USB skeleton driver by |
| 8 | * Greg Kroah-Hartman <greg@kroah.com> |
| 9 | * |
| 10 | * ===================================================================== |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License as |
| 13 | * published by the Free Software Foundation; either version 2 of |
| 14 | * the License, or (at your option) any later version. |
| 15 | * ===================================================================== |
| 16 | * ToDo: ... |
| 17 | * ===================================================================== |
| 18 | * Version: $Id: usb-gigaset.c,v 1.85.4.18 2006/02/04 18:28:16 hjlipp Exp $ |
| 19 | * ===================================================================== |
| 20 | */ |
| 21 | |
| 22 | #include "gigaset.h" |
| 23 | |
| 24 | #include <linux/errno.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/slab.h> |
| 27 | #include <linux/usb.h> |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/moduleparam.h> |
| 30 | |
| 31 | /* Version Information */ |
| 32 | #define DRIVER_AUTHOR "Hansjoerg Lipp <hjlipp@web.de>, Stefan Eilers <Eilers.Stefan@epost.de>" |
| 33 | #define DRIVER_DESC "USB Driver for Gigaset 307x using M105" |
| 34 | |
| 35 | /* Module parameters */ |
| 36 | |
| 37 | static int startmode = SM_ISDN; |
| 38 | static int cidmode = 1; |
| 39 | |
| 40 | module_param(startmode, int, S_IRUGO); |
| 41 | module_param(cidmode, int, S_IRUGO); |
| 42 | MODULE_PARM_DESC(startmode, "start in isdn4linux mode"); |
| 43 | MODULE_PARM_DESC(cidmode, "Call-ID mode"); |
| 44 | |
| 45 | #define GIGASET_MINORS 1 |
| 46 | #define GIGASET_MINOR 8 |
| 47 | #define GIGASET_MODULENAME "usb_gigaset" |
| 48 | #define GIGASET_DEVFSNAME "gig/usb/" |
| 49 | #define GIGASET_DEVNAME "ttyGU" |
| 50 | |
| 51 | #define IF_WRITEBUF 2000 //FIXME // WAKEUP_CHARS: 256 |
| 52 | |
| 53 | /* Values for the Gigaset M105 Data */ |
| 54 | #define USB_M105_VENDOR_ID 0x0681 |
| 55 | #define USB_M105_PRODUCT_ID 0x0009 |
| 56 | |
| 57 | /* table of devices that work with this driver */ |
| 58 | static struct usb_device_id gigaset_table [] = { |
| 59 | { USB_DEVICE(USB_M105_VENDOR_ID, USB_M105_PRODUCT_ID) }, |
| 60 | { } /* Terminating entry */ |
| 61 | }; |
| 62 | |
| 63 | MODULE_DEVICE_TABLE(usb, gigaset_table); |
| 64 | |
| 65 | /* Get a minor range for your devices from the usb maintainer */ |
| 66 | #define USB_SKEL_MINOR_BASE 200 |
| 67 | |
| 68 | |
| 69 | /* |
| 70 | * Control requests (empty fields: 00) |
| 71 | * |
| 72 | * RT|RQ|VALUE|INDEX|LEN |DATA |
| 73 | * In: |
| 74 | * C1 08 01 |
| 75 | * Get flags (1 byte). Bits: 0=dtr,1=rts,3-7:? |
| 76 | * C1 0F ll ll |
| 77 | * Get device information/status (llll: 0x200 and 0x40 seen). |
| 78 | * Real size: I only saw MIN(llll,0x64). |
| 79 | * Contents: seems to be always the same... |
| 80 | * offset 0x00: Length of this structure (0x64) (len: 1,2,3 bytes) |
| 81 | * offset 0x3c: String (16 bit chars): "MCCI USB Serial V2.0" |
| 82 | * rest: ? |
| 83 | * Out: |
| 84 | * 41 11 |
| 85 | * Initialize/reset device ? |
| 86 | * 41 00 xx 00 |
| 87 | * ? (xx=00 or 01; 01 on start, 00 on close) |
| 88 | * 41 07 vv mm |
| 89 | * Set/clear flags vv=value, mm=mask (see RQ 08) |
| 90 | * 41 12 xx |
| 91 | * Used before the following configuration requests are issued |
| 92 | * (with xx=0x0f). I've seen other values<0xf, though. |
| 93 | * 41 01 xx xx |
| 94 | * Set baud rate. xxxx=ceil(0x384000/rate)=trunc(0x383fff/rate)+1. |
| 95 | * 41 03 ps bb |
| 96 | * Set byte size and parity. p: 0x20=even,0x10=odd,0x00=no parity |
| 97 | * [ 0x30: m, 0x40: s ] |
| 98 | * [s: 0: 1 stop bit; 1: 1.5; 2: 2] |
| 99 | * bb: bits/byte (seen 7 and 8) |
| 100 | * 41 13 -- -- -- -- 10 00 ww 00 00 00 xx 00 00 00 yy 00 00 00 zz 00 00 00 |
| 101 | * ?? |
| 102 | * Initialization: 01, 40, 00, 00 |
| 103 | * Open device: 00 40, 00, 00 |
| 104 | * yy and zz seem to be equal, either 0x00 or 0x0a |
| 105 | * (ww,xx) pairs seen: (00,00), (00,40), (01,40), (09,80), (19,80) |
| 106 | * 41 19 -- -- -- -- 06 00 00 00 00 xx 11 13 |
| 107 | * Used after every "configuration sequence" (RQ 12, RQs 01/03/13). |
| 108 | * xx is usually 0x00 but was 0x7e before starting data transfer |
| 109 | * in unimodem mode. So, this might be an array of characters that need |
| 110 | * special treatment ("commit all bufferd data"?), 11=^Q, 13=^S. |
| 111 | * |
| 112 | * Unimodem mode: use "modprobe ppp_async flag_time=0" as the device _needs_ two |
| 113 | * flags per packet. |
| 114 | */ |
| 115 | |
| 116 | static int gigaset_probe(struct usb_interface *interface, |
| 117 | const struct usb_device_id *id); |
| 118 | static void gigaset_disconnect(struct usb_interface *interface); |
| 119 | |
| 120 | static struct gigaset_driver *driver = NULL; |
| 121 | static struct cardstate *cardstate = NULL; |
| 122 | |
| 123 | /* usb specific object needed to register this driver with the usb subsystem */ |
| 124 | static struct usb_driver gigaset_usb_driver = { |
| 125 | .name = GIGASET_MODULENAME, |
| 126 | .probe = gigaset_probe, |
| 127 | .disconnect = gigaset_disconnect, |
| 128 | .id_table = gigaset_table, |
| 129 | }; |
| 130 | |
| 131 | struct usb_cardstate { |
| 132 | struct usb_device *udev; /* save off the usb device pointer */ |
| 133 | struct usb_interface *interface; /* the interface for this device */ |
| 134 | atomic_t busy; /* bulk output in progress */ |
| 135 | |
| 136 | /* Output buffer for commands (M105: and data)*/ |
| 137 | unsigned char *bulk_out_buffer; /* the buffer to send data */ |
| 138 | int bulk_out_size; /* the size of the send buffer */ |
| 139 | __u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */ |
| 140 | struct urb *bulk_out_urb; /* the urb used to transmit data */ |
| 141 | |
| 142 | /* Input buffer for command responses (M105: and data)*/ |
| 143 | int rcvbuf_size; /* the size of the receive buffer */ |
| 144 | struct urb *read_urb; /* the urb used to receive data */ |
| 145 | __u8 int_in_endpointAddr; /* the address of the bulk in endpoint */ |
| 146 | |
| 147 | char bchars[6]; /* req. 0x19 */ |
| 148 | }; |
| 149 | |
| 150 | struct usb_bc_state {}; |
| 151 | |
| 152 | static inline unsigned tiocm_to_gigaset(unsigned state) |
| 153 | { |
| 154 | return ((state & TIOCM_DTR) ? 1 : 0) | ((state & TIOCM_RTS) ? 2 : 0); |
| 155 | } |
| 156 | |
| 157 | #ifdef CONFIG_GIGASET_UNDOCREQ |
| 158 | /* WARNING: EXPERIMENTAL! */ |
| 159 | static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, |
| 160 | unsigned new_state) |
| 161 | { |
| 162 | unsigned mask, val; |
| 163 | int r; |
| 164 | |
| 165 | mask = tiocm_to_gigaset(old_state ^ new_state); |
| 166 | val = tiocm_to_gigaset(new_state); |
| 167 | |
| 168 | dbg(DEBUG_USBREQ, "set flags 0x%02x with mask 0x%02x", val, mask); |
| 169 | r = usb_control_msg(cs->hw.usb->udev, |
| 170 | usb_sndctrlpipe(cs->hw.usb->udev, 0), 7, 0x41, |
| 171 | (val & 0xff) | ((mask & 0xff) << 8), 0, |
| 172 | NULL, 0, 2000 /*timeout??*/); // don't use this in an interrupt/BH |
| 173 | if (r < 0) |
| 174 | return r; |
| 175 | //.. |
| 176 | return 0; |
| 177 | } |
| 178 | |
| 179 | static int set_value(struct cardstate *cs, u8 req, u16 val) |
| 180 | { |
| 181 | int r, r2; |
| 182 | |
| 183 | dbg(DEBUG_USBREQ, "request %02x (%04x)", (unsigned)req, (unsigned)val); |
| 184 | r = usb_control_msg(cs->hw.usb->udev, |
| 185 | usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x12, 0x41, |
| 186 | 0xf /*?*/, 0, |
| 187 | NULL, 0, 2000 /*?*/); /* no idea, what this does */ |
| 188 | if (r < 0) { |
| 189 | err("error %d on request 0x12", -r); |
| 190 | return r; |
| 191 | } |
| 192 | |
| 193 | r = usb_control_msg(cs->hw.usb->udev, |
| 194 | usb_sndctrlpipe(cs->hw.usb->udev, 0), req, 0x41, |
| 195 | val, 0, |
| 196 | NULL, 0, 2000 /*?*/); |
| 197 | if (r < 0) |
| 198 | err("error %d on request 0x%02x", -r, (unsigned)req); |
| 199 | |
| 200 | r2 = usb_control_msg(cs->hw.usb->udev, |
| 201 | usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x19, 0x41, |
| 202 | 0, 0, cs->hw.usb->bchars, 6, 2000 /*?*/); |
| 203 | if (r2 < 0) |
| 204 | err("error %d on request 0x19", -r2); |
| 205 | |
| 206 | return r < 0 ? r : (r2 < 0 ? r2 : 0); |
| 207 | } |
| 208 | |
| 209 | /* WARNING: HIGHLY EXPERIMENTAL! */ |
| 210 | // don't use this in an interrupt/BH |
| 211 | static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) |
| 212 | { |
| 213 | u16 val; |
| 214 | u32 rate; |
| 215 | |
| 216 | cflag &= CBAUD; |
| 217 | |
| 218 | switch (cflag) { |
| 219 | //FIXME more values? |
| 220 | case B300: rate = 300; break; |
| 221 | case B600: rate = 600; break; |
| 222 | case B1200: rate = 1200; break; |
| 223 | case B2400: rate = 2400; break; |
| 224 | case B4800: rate = 4800; break; |
| 225 | case B9600: rate = 9600; break; |
| 226 | case B19200: rate = 19200; break; |
| 227 | case B38400: rate = 38400; break; |
| 228 | case B57600: rate = 57600; break; |
| 229 | case B115200: rate = 115200; break; |
| 230 | default: |
| 231 | rate = 9600; |
| 232 | err("unsupported baudrate request 0x%x," |
| 233 | " using default of B9600", cflag); |
| 234 | } |
| 235 | |
| 236 | val = 0x383fff / rate + 1; |
| 237 | |
| 238 | return set_value(cs, 1, val); |
| 239 | } |
| 240 | |
| 241 | /* WARNING: HIGHLY EXPERIMENTAL! */ |
| 242 | // don't use this in an interrupt/BH |
| 243 | static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) |
| 244 | { |
| 245 | u16 val = 0; |
| 246 | |
| 247 | /* set the parity */ |
| 248 | if (cflag & PARENB) |
| 249 | val |= (cflag & PARODD) ? 0x10 : 0x20; |
| 250 | |
| 251 | /* set the number of data bits */ |
| 252 | switch (cflag & CSIZE) { |
| 253 | case CS5: |
| 254 | val |= 5 << 8; break; |
| 255 | case CS6: |
| 256 | val |= 6 << 8; break; |
| 257 | case CS7: |
| 258 | val |= 7 << 8; break; |
| 259 | case CS8: |
| 260 | val |= 8 << 8; break; |
| 261 | default: |
| 262 | err("CSIZE was not CS5-CS8, using default of 8"); |
| 263 | val |= 8 << 8; |
| 264 | break; |
| 265 | } |
| 266 | |
| 267 | /* set the number of stop bits */ |
| 268 | if (cflag & CSTOPB) { |
| 269 | if ((cflag & CSIZE) == CS5) |
| 270 | val |= 1; /* 1.5 stop bits */ //FIXME is this okay? |
| 271 | else |
| 272 | val |= 2; /* 2 stop bits */ |
| 273 | } |
| 274 | |
| 275 | return set_value(cs, 3, val); |
| 276 | } |
| 277 | |
| 278 | #else |
| 279 | static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, |
| 280 | unsigned new_state) |
| 281 | { |
| 282 | return -EINVAL; |
| 283 | } |
| 284 | |
| 285 | static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) |
| 286 | { |
| 287 | return -EINVAL; |
| 288 | } |
| 289 | |
| 290 | static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) |
| 291 | { |
| 292 | return -EINVAL; |
| 293 | } |
| 294 | #endif |
| 295 | |
| 296 | |
| 297 | /*================================================================================================================*/ |
| 298 | static int gigaset_init_bchannel(struct bc_state *bcs) |
| 299 | { |
| 300 | /* nothing to do for M10x */ |
| 301 | gigaset_bchannel_up(bcs); |
| 302 | return 0; |
| 303 | } |
| 304 | |
| 305 | static int gigaset_close_bchannel(struct bc_state *bcs) |
| 306 | { |
| 307 | /* nothing to do for M10x */ |
| 308 | gigaset_bchannel_down(bcs); |
| 309 | return 0; |
| 310 | } |
| 311 | |
| 312 | //void send_ack_to_LL(void *data); |
| 313 | static int write_modem(struct cardstate *cs); |
| 314 | static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb); |
| 315 | |
| 316 | |
| 317 | /* Handling of send queue. If there is already a skb opened, put data to |
| 318 | * the transfer buffer by calling "write_modem". Otherwise take a new skb out of the queue. |
| 319 | * This function will be called by the ISR via "transmit_chars" (USB: B-Channel Bulk callback handler |
| 320 | * via immediate task queue) or by writebuf_from_LL if the LL wants to transmit data. |
| 321 | */ |
| 322 | static void gigaset_modem_fill(unsigned long data) |
| 323 | { |
| 324 | struct cardstate *cs = (struct cardstate *) data; |
| 325 | struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ |
| 326 | struct cmdbuf_t *cb; |
| 327 | unsigned long flags; |
| 328 | int again; |
| 329 | |
| 330 | dbg(DEBUG_OUTPUT, "modem_fill"); |
| 331 | |
| 332 | if (atomic_read(&cs->hw.usb->busy)) { |
| 333 | dbg(DEBUG_OUTPUT, "modem_fill: busy"); |
| 334 | return; |
| 335 | } |
| 336 | |
| 337 | do { |
| 338 | again = 0; |
| 339 | if (!bcs->tx_skb) { /* no skb is being sent */ |
| 340 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 341 | cb = cs->cmdbuf; |
| 342 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 343 | if (cb) { /* commands to send? */ |
| 344 | dbg(DEBUG_OUTPUT, "modem_fill: cb"); |
| 345 | if (send_cb(cs, cb) < 0) { |
| 346 | dbg(DEBUG_OUTPUT, |
| 347 | "modem_fill: send_cb failed"); |
| 348 | again = 1; /* no callback will be called! */ |
| 349 | } |
| 350 | } else { /* skbs to send? */ |
| 351 | bcs->tx_skb = skb_dequeue(&bcs->squeue); |
| 352 | if (bcs->tx_skb) |
| 353 | dbg(DEBUG_INTR, |
| 354 | "Dequeued skb (Adr: %lx)!", |
| 355 | (unsigned long) bcs->tx_skb); |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | if (bcs->tx_skb) { |
| 360 | dbg(DEBUG_OUTPUT, "modem_fill: tx_skb"); |
| 361 | if (write_modem(cs) < 0) { |
| 362 | dbg(DEBUG_OUTPUT, |
| 363 | "modem_fill: write_modem failed"); |
| 364 | // FIXME should we tell the LL? |
| 365 | again = 1; /* no callback will be called! */ |
| 366 | } |
| 367 | } |
| 368 | } while (again); |
| 369 | } |
| 370 | |
| 371 | /** |
| 372 | * gigaset_read_int_callback |
| 373 | * |
| 374 | * It is called if the data was received from the device. This is almost similiar to |
| 375 | * the interrupt service routine in the serial device. |
| 376 | */ |
| 377 | static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs) |
| 378 | { |
| 379 | int resubmit = 0; |
| 380 | int r; |
| 381 | struct cardstate *cs; |
| 382 | unsigned numbytes; |
| 383 | unsigned char *src; |
| 384 | //unsigned long flags; |
| 385 | struct inbuf_t *inbuf; |
| 386 | |
| 387 | IFNULLRET(urb); |
| 388 | inbuf = (struct inbuf_t *) urb->context; |
| 389 | IFNULLRET(inbuf); |
| 390 | //spin_lock_irqsave(&inbuf->lock, flags); |
| 391 | cs = inbuf->cs; |
| 392 | IFNULLGOTO(cs, exit); |
| 393 | IFNULLGOTO(cardstate, exit); |
| 394 | |
| 395 | if (!atomic_read(&cs->connected)) { |
| 396 | err("%s: disconnected", __func__); |
| 397 | goto exit; |
| 398 | } |
| 399 | |
| 400 | if (!urb->status) { |
| 401 | numbytes = urb->actual_length; |
| 402 | |
| 403 | if (numbytes) { |
| 404 | src = inbuf->rcvbuf; |
| 405 | if (unlikely(*src)) |
| 406 | warn("%s: There was no leading 0, but 0x%02x!", |
| 407 | __func__, (unsigned) *src); |
| 408 | ++src; /* skip leading 0x00 */ |
| 409 | --numbytes; |
| 410 | if (gigaset_fill_inbuf(inbuf, src, numbytes)) { |
| 411 | dbg(DEBUG_INTR, "%s-->BH", __func__); |
| 412 | gigaset_schedule_event(inbuf->cs); |
| 413 | } |
| 414 | } else |
| 415 | dbg(DEBUG_INTR, "Received zero block length"); |
| 416 | resubmit = 1; |
| 417 | } else { |
| 418 | /* The urb might have been killed. */ |
| 419 | dbg(DEBUG_ANY, "%s - nonzero read bulk status received: %d", |
| 420 | __func__, urb->status); |
| 421 | if (urb->status != -ENOENT) /* not killed */ |
| 422 | resubmit = 1; |
| 423 | } |
| 424 | exit: |
| 425 | //spin_unlock_irqrestore(&inbuf->lock, flags); |
| 426 | if (resubmit) { |
| 427 | r = usb_submit_urb(urb, SLAB_ATOMIC); |
| 428 | if (r) |
| 429 | err("error %d when resubmitting urb.", -r); |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | |
| 434 | /* This callback routine is called when data was transmitted to a B-Channel. |
| 435 | * Therefore it has to check if there is still data to transmit. This |
| 436 | * happens by calling modem_fill via task queue. |
| 437 | * |
| 438 | */ |
| 439 | static void gigaset_write_bulk_callback(struct urb *urb, struct pt_regs *regs) |
| 440 | { |
| 441 | struct cardstate *cs = (struct cardstate *) urb->context; |
| 442 | |
| 443 | IFNULLRET(cs); |
| 444 | #ifdef CONFIG_GIGASET_DEBUG |
| 445 | if (!atomic_read(&cs->connected)) { |
| 446 | err("%s:not connected", __func__); |
| 447 | return; |
| 448 | } |
| 449 | #endif |
| 450 | if (urb->status) |
| 451 | err("bulk transfer failed (status %d)", -urb->status); /* That's all we can do. Communication problems |
| 452 | are handeled by timeouts or network protocols */ |
| 453 | |
| 454 | atomic_set(&cs->hw.usb->busy, 0); |
| 455 | tasklet_schedule(&cs->write_tasklet); |
| 456 | } |
| 457 | |
| 458 | static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb) |
| 459 | { |
| 460 | struct cmdbuf_t *tcb; |
| 461 | unsigned long flags; |
| 462 | int count; |
| 463 | int status = -ENOENT; // FIXME |
| 464 | struct usb_cardstate *ucs = cs->hw.usb; |
| 465 | |
| 466 | do { |
| 467 | if (!cb->len) { |
| 468 | tcb = cb; |
| 469 | |
| 470 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 471 | cs->cmdbytes -= cs->curlen; |
| 472 | dbg(DEBUG_OUTPUT, "send_cb: sent %u bytes, %u left", |
| 473 | cs->curlen, cs->cmdbytes); |
| 474 | cs->cmdbuf = cb = cb->next; |
| 475 | if (cb) { |
| 476 | cb->prev = NULL; |
| 477 | cs->curlen = cb->len; |
| 478 | } else { |
| 479 | cs->lastcmdbuf = NULL; |
| 480 | cs->curlen = 0; |
| 481 | } |
| 482 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 483 | |
| 484 | if (tcb->wake_tasklet) |
| 485 | tasklet_schedule(tcb->wake_tasklet); |
| 486 | kfree(tcb); |
| 487 | } |
| 488 | if (cb) { |
| 489 | count = min(cb->len, ucs->bulk_out_size); |
| 490 | usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev, |
| 491 | usb_sndbulkpipe(ucs->udev, |
| 492 | ucs->bulk_out_endpointAddr & 0x0f), |
| 493 | cb->buf + cb->offset, count, |
| 494 | gigaset_write_bulk_callback, cs); |
| 495 | |
| 496 | cb->offset += count; |
| 497 | cb->len -= count; |
| 498 | atomic_set(&ucs->busy, 1); |
| 499 | dbg(DEBUG_OUTPUT, "send_cb: send %d bytes", count); |
| 500 | |
| 501 | status = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC); |
| 502 | if (status) { |
| 503 | atomic_set(&ucs->busy, 0); |
| 504 | err("could not submit urb (error %d).", |
| 505 | -status); |
| 506 | cb->len = 0; /* skip urb => remove cb+wakeup in next loop cycle */ |
| 507 | } |
| 508 | } |
| 509 | } while (cb && status); /* bei Fehler naechster Befehl //FIXME: ist das OK? */ |
| 510 | |
| 511 | return status; |
| 512 | } |
| 513 | |
| 514 | /* Write string into transbuf and send it to modem. |
| 515 | */ |
| 516 | static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf, |
| 517 | int len, struct tasklet_struct *wake_tasklet) |
| 518 | { |
| 519 | struct cmdbuf_t *cb; |
| 520 | unsigned long flags; |
| 521 | |
| 522 | gigaset_dbg_buffer(atomic_read(&cs->mstate) != MS_LOCKED ? |
| 523 | DEBUG_TRANSCMD : DEBUG_LOCKCMD, |
| 524 | "CMD Transmit", len, buf, 0); |
| 525 | |
| 526 | if (!atomic_read(&cs->connected)) { |
| 527 | err("%s: not connected", __func__); |
| 528 | return -ENODEV; |
| 529 | } |
| 530 | |
| 531 | if (len <= 0) |
| 532 | return 0; |
| 533 | |
| 534 | if (!(cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC))) { |
| 535 | err("%s: out of memory", __func__); |
| 536 | return -ENOMEM; |
| 537 | } |
| 538 | |
| 539 | memcpy(cb->buf, buf, len); |
| 540 | cb->len = len; |
| 541 | cb->offset = 0; |
| 542 | cb->next = NULL; |
| 543 | cb->wake_tasklet = wake_tasklet; |
| 544 | |
| 545 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 546 | cb->prev = cs->lastcmdbuf; |
| 547 | if (cs->lastcmdbuf) |
| 548 | cs->lastcmdbuf->next = cb; |
| 549 | else { |
| 550 | cs->cmdbuf = cb; |
| 551 | cs->curlen = len; |
| 552 | } |
| 553 | cs->cmdbytes += len; |
| 554 | cs->lastcmdbuf = cb; |
| 555 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 556 | |
| 557 | tasklet_schedule(&cs->write_tasklet); |
| 558 | return len; |
| 559 | } |
| 560 | |
| 561 | static int gigaset_write_room(struct cardstate *cs) |
| 562 | { |
| 563 | unsigned long flags; |
| 564 | unsigned bytes; |
| 565 | |
| 566 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 567 | bytes = cs->cmdbytes; |
| 568 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 569 | |
| 570 | return bytes < IF_WRITEBUF ? IF_WRITEBUF - bytes : 0; |
| 571 | } |
| 572 | |
| 573 | static int gigaset_chars_in_buffer(struct cardstate *cs) |
| 574 | { |
| 575 | return cs->cmdbytes; |
| 576 | } |
| 577 | |
| 578 | static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6]) |
| 579 | { |
| 580 | #ifdef CONFIG_GIGASET_UNDOCREQ |
| 581 | gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf, 0); |
| 582 | memcpy(cs->hw.usb->bchars, buf, 6); |
| 583 | return usb_control_msg(cs->hw.usb->udev, |
| 584 | usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x19, 0x41, |
| 585 | 0, 0, &buf, 6, 2000); |
| 586 | #else |
| 587 | return -EINVAL; |
| 588 | #endif |
| 589 | } |
| 590 | |
| 591 | static int gigaset_freebcshw(struct bc_state *bcs) |
| 592 | { |
| 593 | if (!bcs->hw.usb) |
| 594 | return 0; |
| 595 | //FIXME |
| 596 | kfree(bcs->hw.usb); |
| 597 | return 1; |
| 598 | } |
| 599 | |
| 600 | /* Initialize the b-channel structure */ |
| 601 | static int gigaset_initbcshw(struct bc_state *bcs) |
| 602 | { |
| 603 | bcs->hw.usb = kmalloc(sizeof(struct usb_bc_state), GFP_KERNEL); |
| 604 | if (!bcs->hw.usb) |
| 605 | return 0; |
| 606 | |
| 607 | //bcs->hw.usb->trans_flg = READY_TO_TRNSMIT; /* B-Channel ready to transmit */ |
| 608 | return 1; |
| 609 | } |
| 610 | |
| 611 | static void gigaset_reinitbcshw(struct bc_state *bcs) |
| 612 | { |
| 613 | } |
| 614 | |
| 615 | static void gigaset_freecshw(struct cardstate *cs) |
| 616 | { |
| 617 | //FIXME |
| 618 | tasklet_kill(&cs->write_tasklet); |
| 619 | kfree(cs->hw.usb); |
| 620 | } |
| 621 | |
| 622 | static int gigaset_initcshw(struct cardstate *cs) |
| 623 | { |
| 624 | struct usb_cardstate *ucs; |
| 625 | |
| 626 | cs->hw.usb = ucs = |
| 627 | kmalloc(sizeof(struct usb_cardstate), GFP_KERNEL); |
| 628 | if (!ucs) |
| 629 | return 0; |
| 630 | |
| 631 | ucs->bchars[0] = 0; |
| 632 | ucs->bchars[1] = 0; |
| 633 | ucs->bchars[2] = 0; |
| 634 | ucs->bchars[3] = 0; |
| 635 | ucs->bchars[4] = 0x11; |
| 636 | ucs->bchars[5] = 0x13; |
| 637 | ucs->bulk_out_buffer = NULL; |
| 638 | ucs->bulk_out_urb = NULL; |
| 639 | //ucs->urb_cmd_out = NULL; |
| 640 | ucs->read_urb = NULL; |
| 641 | tasklet_init(&cs->write_tasklet, |
| 642 | &gigaset_modem_fill, (unsigned long) cs); |
| 643 | |
| 644 | return 1; |
| 645 | } |
| 646 | |
| 647 | /* Writes the data of the current open skb into the modem. |
| 648 | * We have to protect against multiple calls until the |
| 649 | * callback handler () is called , due to the fact that we |
| 650 | * are just allowed to send data once to an endpoint. Therefore |
| 651 | * we using "trans_flg" to synchonize ... |
| 652 | */ |
| 653 | static int write_modem(struct cardstate *cs) |
| 654 | { |
| 655 | int ret; |
| 656 | int count; |
| 657 | struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ |
| 658 | struct usb_cardstate *ucs = cs->hw.usb; |
| 659 | //unsigned long flags; |
| 660 | |
| 661 | IFNULLRETVAL(bcs->tx_skb, -EINVAL); |
| 662 | |
| 663 | dbg(DEBUG_WRITE, "len: %d...", bcs->tx_skb->len); |
| 664 | |
| 665 | ret = -ENODEV; |
| 666 | IFNULLGOTO(ucs->bulk_out_buffer, error); |
| 667 | IFNULLGOTO(ucs->bulk_out_urb, error); |
| 668 | ret = 0; |
| 669 | |
| 670 | if (!bcs->tx_skb->len) { |
| 671 | dev_kfree_skb_any(bcs->tx_skb); |
| 672 | bcs->tx_skb = NULL; |
| 673 | return -EINVAL; |
| 674 | } |
| 675 | |
| 676 | /* Copy data to bulk out buffer and // FIXME copying not necessary |
| 677 | * transmit data |
| 678 | */ |
| 679 | count = min(bcs->tx_skb->len, (unsigned) ucs->bulk_out_size); |
| 680 | memcpy(ucs->bulk_out_buffer, bcs->tx_skb->data, count); |
| 681 | skb_pull(bcs->tx_skb, count); |
| 682 | |
| 683 | usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev, |
| 684 | usb_sndbulkpipe(ucs->udev, |
| 685 | ucs->bulk_out_endpointAddr & 0x0f), |
| 686 | ucs->bulk_out_buffer, count, |
| 687 | gigaset_write_bulk_callback, cs); |
| 688 | atomic_set(&ucs->busy, 1); |
| 689 | dbg(DEBUG_OUTPUT, "write_modem: send %d bytes", count); |
| 690 | |
| 691 | ret = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC); |
| 692 | if (ret) { |
| 693 | err("could not submit urb (error %d).", -ret); |
| 694 | atomic_set(&ucs->busy, 0); |
| 695 | } |
| 696 | if (!bcs->tx_skb->len) { |
| 697 | /* skb sent completely */ |
| 698 | gigaset_skb_sent(bcs, bcs->tx_skb); //FIXME also, when ret<0? |
| 699 | |
| 700 | dbg(DEBUG_INTR, |
| 701 | "kfree skb (Adr: %lx)!", (unsigned long) bcs->tx_skb); |
| 702 | dev_kfree_skb_any(bcs->tx_skb); |
| 703 | bcs->tx_skb = NULL; |
| 704 | } |
| 705 | |
| 706 | return ret; |
| 707 | error: |
| 708 | dev_kfree_skb_any(bcs->tx_skb); |
| 709 | bcs->tx_skb = NULL; |
| 710 | return ret; |
| 711 | |
| 712 | } |
| 713 | |
| 714 | static int gigaset_probe(struct usb_interface *interface, |
| 715 | const struct usb_device_id *id) |
| 716 | { |
| 717 | int retval; |
| 718 | struct usb_device *udev = interface_to_usbdev(interface); |
| 719 | unsigned int ifnum; |
| 720 | struct usb_host_interface *hostif; |
| 721 | struct cardstate *cs = NULL; |
| 722 | struct usb_cardstate *ucs = NULL; |
| 723 | //struct usb_interface_descriptor *iface_desc; |
| 724 | struct usb_endpoint_descriptor *endpoint; |
| 725 | //isdn_ctrl command; |
| 726 | int buffer_size; |
| 727 | int alt; |
| 728 | //unsigned long flags; |
| 729 | |
| 730 | info("%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)", |
| 731 | __func__, le16_to_cpu(udev->descriptor.idVendor), |
| 732 | le16_to_cpu(udev->descriptor.idProduct)); |
| 733 | |
| 734 | retval = -ENODEV; //FIXME |
| 735 | |
| 736 | /* See if the device offered us matches what we can accept */ |
| 737 | if ((le16_to_cpu(udev->descriptor.idVendor != USB_M105_VENDOR_ID)) || |
| 738 | (le16_to_cpu(udev->descriptor.idProduct != USB_M105_PRODUCT_ID))) |
| 739 | return -ENODEV; |
| 740 | |
| 741 | /* this starts to become ascii art... */ |
| 742 | hostif = interface->cur_altsetting; |
| 743 | alt = hostif->desc.bAlternateSetting; |
| 744 | ifnum = hostif->desc.bInterfaceNumber; // FIXME ? |
| 745 | |
| 746 | if (alt != 0 || ifnum != 0) { |
| 747 | warn("ifnum %d, alt %d", ifnum, alt); |
| 748 | return -ENODEV; |
| 749 | } |
| 750 | |
| 751 | /* Reject application specific intefaces |
| 752 | * |
| 753 | */ |
| 754 | if (hostif->desc.bInterfaceClass != 255) { |
| 755 | info("%s: Device matched, but iface_desc[%d]->bInterfaceClass==%d !", |
| 756 | __func__, ifnum, hostif->desc.bInterfaceClass); |
| 757 | return -ENODEV; |
| 758 | } |
| 759 | |
| 760 | info("%s: Device matched ... !", __func__); |
| 761 | |
| 762 | cs = gigaset_getunassignedcs(driver); |
| 763 | if (!cs) { |
| 764 | warn("No free cardstate!"); |
| 765 | return -ENODEV; |
| 766 | } |
| 767 | ucs = cs->hw.usb; |
| 768 | |
| 769 | #if 0 |
| 770 | if (usb_set_configuration(udev, udev->config[0].desc.bConfigurationValue) < 0) { |
| 771 | warn("set_configuration failed"); |
| 772 | goto error; |
| 773 | } |
| 774 | |
| 775 | |
| 776 | if (usb_set_interface(udev, ifnum/*==0*/, alt/*==0*/) < 0) { |
| 777 | warn("usb_set_interface failed, device %d interface %d altsetting %d", |
| 778 | udev->devnum, ifnum, alt); |
| 779 | goto error; |
| 780 | } |
| 781 | #endif |
| 782 | |
| 783 | /* set up the endpoint information */ |
| 784 | /* check out the endpoints */ |
| 785 | /* We will get 2 endpoints: One for sending commands to the device (bulk out) and one to |
| 786 | * poll messages from the device(int in). |
| 787 | * Therefore we will have an almost similiar situation as with our serial port handler. |
| 788 | * If an connection will be established, we will have to create data in/out pipes |
| 789 | * dynamically... |
| 790 | */ |
| 791 | |
| 792 | endpoint = &hostif->endpoint[0].desc; |
| 793 | |
| 794 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); |
| 795 | ucs->bulk_out_size = buffer_size; |
| 796 | ucs->bulk_out_endpointAddr = endpoint->bEndpointAddress; |
| 797 | ucs->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); |
| 798 | if (!ucs->bulk_out_buffer) { |
| 799 | err("Couldn't allocate bulk_out_buffer"); |
| 800 | retval = -ENOMEM; |
| 801 | goto error; |
| 802 | } |
| 803 | |
| 804 | ucs->bulk_out_urb = usb_alloc_urb(0, SLAB_KERNEL); |
| 805 | if (!ucs->bulk_out_urb) { |
| 806 | err("Couldn't allocate bulk_out_buffer"); |
| 807 | retval = -ENOMEM; |
| 808 | goto error; |
| 809 | } |
| 810 | |
| 811 | endpoint = &hostif->endpoint[1].desc; |
| 812 | |
| 813 | atomic_set(&ucs->busy, 0); |
| 814 | ucs->udev = udev; |
| 815 | ucs->interface = interface; |
| 816 | |
| 817 | ucs->read_urb = usb_alloc_urb(0, SLAB_KERNEL); |
| 818 | if (!ucs->read_urb) { |
| 819 | err("No free urbs available"); |
| 820 | retval = -ENOMEM; |
| 821 | goto error; |
| 822 | } |
| 823 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); |
| 824 | ucs->rcvbuf_size = buffer_size; |
| 825 | ucs->int_in_endpointAddr = endpoint->bEndpointAddress; |
| 826 | cs->inbuf[0].rcvbuf = kmalloc(buffer_size, GFP_KERNEL); |
| 827 | if (!cs->inbuf[0].rcvbuf) { |
| 828 | err("Couldn't allocate rcvbuf"); |
| 829 | retval = -ENOMEM; |
| 830 | goto error; |
| 831 | } |
| 832 | /* Fill the interrupt urb and send it to the core */ |
| 833 | usb_fill_int_urb(ucs->read_urb, udev, |
| 834 | usb_rcvintpipe(udev, |
| 835 | endpoint->bEndpointAddress & 0x0f), |
| 836 | cs->inbuf[0].rcvbuf, buffer_size, |
| 837 | gigaset_read_int_callback, |
| 838 | cs->inbuf + 0, endpoint->bInterval); |
| 839 | |
| 840 | retval = usb_submit_urb(ucs->read_urb, SLAB_KERNEL); |
| 841 | if (retval) { |
| 842 | err("Could not submit URB!"); |
| 843 | goto error; |
| 844 | } |
| 845 | |
| 846 | /* tell common part that the device is ready */ |
| 847 | if (startmode == SM_LOCKED) |
| 848 | atomic_set(&cs->mstate, MS_LOCKED); |
| 849 | if (!gigaset_start(cs)) { |
| 850 | tasklet_kill(&cs->write_tasklet); |
| 851 | retval = -ENODEV; //FIXME |
| 852 | goto error; |
| 853 | } |
| 854 | |
| 855 | /* save address of controller structure */ |
| 856 | usb_set_intfdata(interface, cs); |
| 857 | |
| 858 | /* set up device sysfs */ |
| 859 | gigaset_init_dev_sysfs(interface); |
| 860 | return 0; |
| 861 | |
| 862 | error: |
| 863 | if (ucs->read_urb) |
| 864 | usb_kill_urb(ucs->read_urb); |
| 865 | kfree(ucs->bulk_out_buffer); |
| 866 | if (ucs->bulk_out_urb != NULL) |
| 867 | usb_free_urb(ucs->bulk_out_urb); |
| 868 | kfree(cs->inbuf[0].rcvbuf); |
| 869 | if (ucs->read_urb != NULL) |
| 870 | usb_free_urb(ucs->read_urb); |
| 871 | ucs->read_urb = ucs->bulk_out_urb = NULL; |
| 872 | cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL; |
| 873 | gigaset_unassign(cs); |
| 874 | return retval; |
| 875 | } |
| 876 | |
| 877 | /** |
| 878 | * skel_disconnect |
| 879 | */ |
| 880 | static void gigaset_disconnect(struct usb_interface *interface) |
| 881 | { |
| 882 | struct cardstate *cs; |
| 883 | struct usb_cardstate *ucs; |
| 884 | |
| 885 | cs = usb_get_intfdata(interface); |
| 886 | |
| 887 | /* clear device sysfs */ |
| 888 | gigaset_free_dev_sysfs(interface); |
| 889 | |
| 890 | usb_set_intfdata(interface, NULL); |
| 891 | ucs = cs->hw.usb; |
| 892 | usb_kill_urb(ucs->read_urb); |
| 893 | //info("GigaSet USB device #%d will be disconnected", minor); |
| 894 | |
| 895 | gigaset_stop(cs); |
| 896 | |
| 897 | tasklet_kill(&cs->write_tasklet); |
| 898 | |
| 899 | usb_kill_urb(ucs->bulk_out_urb); /* FIXME: nur, wenn noetig */ |
| 900 | //usb_kill_urb(ucs->urb_cmd_out); /* FIXME: nur, wenn noetig */ |
| 901 | |
| 902 | kfree(ucs->bulk_out_buffer); |
| 903 | if (ucs->bulk_out_urb != NULL) |
| 904 | usb_free_urb(ucs->bulk_out_urb); |
| 905 | //if(ucs->urb_cmd_out != NULL) |
| 906 | // usb_free_urb(ucs->urb_cmd_out); |
| 907 | kfree(cs->inbuf[0].rcvbuf); |
| 908 | if (ucs->read_urb != NULL) |
| 909 | usb_free_urb(ucs->read_urb); |
| 910 | ucs->read_urb = ucs->bulk_out_urb/*=ucs->urb_cmd_out*/=NULL; |
| 911 | cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL; |
| 912 | |
| 913 | gigaset_unassign(cs); |
| 914 | } |
| 915 | |
| 916 | static struct gigaset_ops ops = { |
| 917 | gigaset_write_cmd, |
| 918 | gigaset_write_room, |
| 919 | gigaset_chars_in_buffer, |
| 920 | gigaset_brkchars, |
| 921 | gigaset_init_bchannel, |
| 922 | gigaset_close_bchannel, |
| 923 | gigaset_initbcshw, |
| 924 | gigaset_freebcshw, |
| 925 | gigaset_reinitbcshw, |
| 926 | gigaset_initcshw, |
| 927 | gigaset_freecshw, |
| 928 | gigaset_set_modem_ctrl, |
| 929 | gigaset_baud_rate, |
| 930 | gigaset_set_line_ctrl, |
| 931 | gigaset_m10x_send_skb, |
| 932 | gigaset_m10x_input, |
| 933 | }; |
| 934 | |
| 935 | /** |
| 936 | * usb_gigaset_init |
| 937 | * This function is called while kernel-module is loaded |
| 938 | */ |
| 939 | static int __init usb_gigaset_init(void) |
| 940 | { |
| 941 | int result; |
| 942 | |
| 943 | /* allocate memory for our driver state and intialize it */ |
| 944 | if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, |
| 945 | GIGASET_MODULENAME, GIGASET_DEVNAME, |
| 946 | GIGASET_DEVFSNAME, &ops, |
| 947 | THIS_MODULE)) == NULL) |
| 948 | goto error; |
| 949 | |
| 950 | /* allocate memory for our device state and intialize it */ |
| 951 | cardstate = gigaset_initcs(driver, 1, 1, 0, cidmode, GIGASET_MODULENAME); |
| 952 | if (!cardstate) |
| 953 | goto error; |
| 954 | |
| 955 | /* register this driver with the USB subsystem */ |
| 956 | result = usb_register(&gigaset_usb_driver); |
| 957 | if (result < 0) { |
| 958 | err("usb_gigaset: usb_register failed (error %d)", |
| 959 | -result); |
| 960 | goto error; |
| 961 | } |
| 962 | |
| 963 | info(DRIVER_AUTHOR); |
| 964 | info(DRIVER_DESC); |
| 965 | return 0; |
| 966 | |
| 967 | error: if (cardstate) |
| 968 | gigaset_freecs(cardstate); |
| 969 | cardstate = NULL; |
| 970 | if (driver) |
| 971 | gigaset_freedriver(driver); |
| 972 | driver = NULL; |
| 973 | return -1; |
| 974 | } |
| 975 | |
| 976 | |
| 977 | /** |
| 978 | * usb_gigaset_exit |
| 979 | * This function is called while unloading the kernel-module |
| 980 | */ |
| 981 | static void __exit usb_gigaset_exit(void) |
| 982 | { |
| 983 | gigaset_blockdriver(driver); /* => probe will fail |
| 984 | * => no gigaset_start any more |
| 985 | */ |
| 986 | |
| 987 | gigaset_shutdown(cardstate); |
| 988 | /* from now on, no isdn callback should be possible */ |
| 989 | |
| 990 | /* deregister this driver with the USB subsystem */ |
| 991 | usb_deregister(&gigaset_usb_driver); |
| 992 | /* this will call the disconnect-callback */ |
| 993 | /* from now on, no disconnect/probe callback should be running */ |
| 994 | |
| 995 | gigaset_freecs(cardstate); |
| 996 | cardstate = NULL; |
| 997 | gigaset_freedriver(driver); |
| 998 | driver = NULL; |
| 999 | } |
| 1000 | |
| 1001 | |
| 1002 | module_init(usb_gigaset_init); |
| 1003 | module_exit(usb_gigaset_exit); |
| 1004 | |
| 1005 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 1006 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 1007 | |
| 1008 | MODULE_LICENSE("GPL"); |