Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1 | /* |
| 2 | * USB driver for Gigaset 307x base via direct USB connection. |
| 3 | * |
| 4 | * Copyright (c) 2001 by Hansjoerg Lipp <hjlipp@web.de>, |
| 5 | * Tilman Schmidt <tilman@imap.cc>, |
Tilman Schmidt | 70440cf | 2006-04-10 22:55:14 -0700 | [diff] [blame] | 6 | * Stefan Eilers. |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 7 | * |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 8 | * ===================================================================== |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License as |
| 11 | * published by the Free Software Foundation; either version 2 of |
| 12 | * the License, or (at your option) any later version. |
| 13 | * ===================================================================== |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | #include "gigaset.h" |
| 17 | |
| 18 | #include <linux/errno.h> |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/slab.h> |
| 21 | #include <linux/timer.h> |
| 22 | #include <linux/usb.h> |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/moduleparam.h> |
| 25 | |
| 26 | /* Version Information */ |
Tilman Schmidt | 70440cf | 2006-04-10 22:55:14 -0700 | [diff] [blame] | 27 | #define DRIVER_AUTHOR "Tilman Schmidt <tilman@imap.cc>, Hansjoerg Lipp <hjlipp@web.de>, Stefan Eilers" |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 28 | #define DRIVER_DESC "USB Driver for Gigaset 307x" |
| 29 | |
| 30 | |
| 31 | /* Module parameters */ |
| 32 | |
| 33 | static int startmode = SM_ISDN; |
| 34 | static int cidmode = 1; |
| 35 | |
| 36 | module_param(startmode, int, S_IRUGO); |
| 37 | module_param(cidmode, int, S_IRUGO); |
| 38 | MODULE_PARM_DESC(startmode, "start in isdn4linux mode"); |
| 39 | MODULE_PARM_DESC(cidmode, "Call-ID mode"); |
| 40 | |
| 41 | #define GIGASET_MINORS 1 |
| 42 | #define GIGASET_MINOR 16 |
| 43 | #define GIGASET_MODULENAME "bas_gigaset" |
| 44 | #define GIGASET_DEVFSNAME "gig/bas/" |
| 45 | #define GIGASET_DEVNAME "ttyGB" |
| 46 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 47 | /* length limit according to Siemens 3070usb-protokoll.doc ch. 2.1 */ |
| 48 | #define IF_WRITEBUF 264 |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 49 | |
| 50 | /* Values for the Gigaset 307x */ |
| 51 | #define USB_GIGA_VENDOR_ID 0x0681 |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 52 | #define USB_3070_PRODUCT_ID 0x0001 |
| 53 | #define USB_3075_PRODUCT_ID 0x0002 |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 54 | #define USB_SX303_PRODUCT_ID 0x0021 |
| 55 | #define USB_SX353_PRODUCT_ID 0x0022 |
| 56 | |
| 57 | /* table of devices that work with this driver */ |
| 58 | static struct usb_device_id gigaset_table [] = { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 59 | { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_3070_PRODUCT_ID) }, |
| 60 | { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_3075_PRODUCT_ID) }, |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 61 | { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_SX303_PRODUCT_ID) }, |
| 62 | { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_SX353_PRODUCT_ID) }, |
| 63 | { } /* Terminating entry */ |
| 64 | }; |
| 65 | |
| 66 | MODULE_DEVICE_TABLE(usb, gigaset_table); |
| 67 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 68 | /*======================= local function prototypes =============================*/ |
| 69 | |
| 70 | /* This function is called if a new device is connected to the USB port. It |
| 71 | * checks whether this new device belongs to this driver. |
| 72 | */ |
| 73 | static int gigaset_probe(struct usb_interface *interface, |
| 74 | const struct usb_device_id *id); |
| 75 | |
| 76 | /* Function will be called if the device is unplugged */ |
| 77 | static void gigaset_disconnect(struct usb_interface *interface); |
| 78 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 79 | static void read_ctrl_callback(struct urb *, struct pt_regs *); |
| 80 | static void stopurbs(struct bas_bc_state *); |
| 81 | static int atwrite_submit(struct cardstate *, unsigned char *, int); |
| 82 | static int start_cbsend(struct cardstate *); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 83 | |
| 84 | /*==============================================================================*/ |
| 85 | |
| 86 | struct bas_cardstate { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 87 | struct usb_device *udev; /* USB device pointer */ |
| 88 | struct usb_interface *interface; /* interface for this device */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 89 | unsigned char minor; /* starting minor number */ |
| 90 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 91 | struct urb *urb_ctrl; /* control pipe default URB */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 92 | struct usb_ctrlrequest dr_ctrl; |
| 93 | struct timer_list timer_ctrl; /* control request timeout */ |
| 94 | |
| 95 | struct timer_list timer_atrdy; /* AT command ready timeout */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 96 | struct urb *urb_cmd_out; /* for sending AT commands */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 97 | struct usb_ctrlrequest dr_cmd_out; |
| 98 | int retry_cmd_out; |
| 99 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 100 | struct urb *urb_cmd_in; /* for receiving AT replies */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 101 | struct usb_ctrlrequest dr_cmd_in; |
| 102 | struct timer_list timer_cmd_in; /* receive request timeout */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 103 | unsigned char *rcvbuf; /* AT reply receive buffer */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 104 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 105 | struct urb *urb_int_in; /* URB for interrupt pipe */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 106 | unsigned char int_in_buf[3]; |
| 107 | |
| 108 | spinlock_t lock; /* locks all following */ |
| 109 | atomic_t basstate; /* bitmap (BS_*) */ |
| 110 | int pending; /* uncompleted base request */ |
| 111 | int rcvbuf_size; /* size of AT receive buffer */ |
| 112 | /* 0: no receive in progress */ |
| 113 | int retry_cmd_in; /* receive req retry count */ |
| 114 | }; |
| 115 | |
| 116 | /* status of direct USB connection to 307x base (bits in basstate) */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 117 | #define BS_ATOPEN 0x001 /* AT channel open */ |
| 118 | #define BS_B1OPEN 0x002 /* B channel 1 open */ |
| 119 | #define BS_B2OPEN 0x004 /* B channel 2 open */ |
| 120 | #define BS_ATREADY 0x008 /* base ready for AT command */ |
| 121 | #define BS_INIT 0x010 /* base has signalled INIT_OK */ |
| 122 | #define BS_ATTIMER 0x020 /* waiting for HD_READY_SEND_ATDATA */ |
| 123 | #define BS_ATRDPEND 0x040 /* urb_cmd_in in use */ |
| 124 | #define BS_ATWRPEND 0x080 /* urb_cmd_out in use */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 125 | |
| 126 | |
| 127 | static struct gigaset_driver *driver = NULL; |
| 128 | static struct cardstate *cardstate = NULL; |
| 129 | |
| 130 | /* usb specific object needed to register this driver with the usb subsystem */ |
| 131 | static struct usb_driver gigaset_usb_driver = { |
| 132 | .name = GIGASET_MODULENAME, |
| 133 | .probe = gigaset_probe, |
| 134 | .disconnect = gigaset_disconnect, |
| 135 | .id_table = gigaset_table, |
| 136 | }; |
| 137 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 138 | /* get message text for usb_submit_urb return code |
| 139 | */ |
| 140 | static char *get_usb_rcmsg(int rc) |
| 141 | { |
| 142 | static char unkmsg[28]; |
| 143 | |
| 144 | switch (rc) { |
| 145 | case 0: |
| 146 | return "success"; |
| 147 | case -ENOMEM: |
| 148 | return "out of memory"; |
| 149 | case -ENODEV: |
| 150 | return "device not present"; |
| 151 | case -ENOENT: |
| 152 | return "endpoint not present"; |
| 153 | case -ENXIO: |
| 154 | return "URB type not supported"; |
| 155 | case -EINVAL: |
| 156 | return "invalid argument"; |
| 157 | case -EAGAIN: |
| 158 | return "start frame too early or too much scheduled"; |
| 159 | case -EFBIG: |
| 160 | return "too many isochronous frames requested"; |
| 161 | case -EPIPE: |
| 162 | return "endpoint stalled"; |
| 163 | case -EMSGSIZE: |
| 164 | return "invalid packet size"; |
| 165 | case -ENOSPC: |
| 166 | return "would overcommit USB bandwidth"; |
| 167 | case -ESHUTDOWN: |
| 168 | return "device shut down"; |
| 169 | case -EPERM: |
| 170 | return "reject flag set"; |
| 171 | case -EHOSTUNREACH: |
| 172 | return "device suspended"; |
| 173 | default: |
| 174 | snprintf(unkmsg, sizeof(unkmsg), "unknown error %d", rc); |
| 175 | return unkmsg; |
| 176 | } |
| 177 | } |
| 178 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 179 | /* get message text for USB status code |
| 180 | */ |
| 181 | static char *get_usb_statmsg(int status) |
| 182 | { |
| 183 | static char unkmsg[28]; |
| 184 | |
| 185 | switch (status) { |
| 186 | case 0: |
| 187 | return "success"; |
| 188 | case -ENOENT: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 189 | return "unlinked (sync)"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 190 | case -EINPROGRESS: |
| 191 | return "pending"; |
| 192 | case -EPROTO: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 193 | return "bit stuffing error, timeout, or unknown USB error"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 194 | case -EILSEQ: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 195 | return "CRC mismatch, timeout, or unknown USB error"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 196 | case -ETIMEDOUT: |
| 197 | return "timed out"; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 198 | case -EPIPE: |
| 199 | return "endpoint stalled"; |
| 200 | case -ECOMM: |
| 201 | return "IN buffer overrun"; |
| 202 | case -ENOSR: |
| 203 | return "OUT buffer underrun"; |
| 204 | case -EOVERFLOW: |
| 205 | return "too much data"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 206 | case -EREMOTEIO: |
| 207 | return "short packet detected"; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 208 | case -ENODEV: |
| 209 | return "device removed"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 210 | case -EXDEV: |
| 211 | return "partial isochronous transfer"; |
| 212 | case -EINVAL: |
| 213 | return "invalid argument"; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 214 | case -ECONNRESET: |
| 215 | return "unlinked (async)"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 216 | case -ESHUTDOWN: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 217 | return "device shut down"; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 218 | default: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 219 | snprintf(unkmsg, sizeof(unkmsg), "unknown status %d", status); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 220 | return unkmsg; |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | /* usb_pipetype_str |
| 225 | * retrieve string representation of USB pipe type |
| 226 | */ |
| 227 | static inline char *usb_pipetype_str(int pipe) |
| 228 | { |
| 229 | if (usb_pipeisoc(pipe)) |
| 230 | return "Isoc"; |
| 231 | if (usb_pipeint(pipe)) |
| 232 | return "Int"; |
| 233 | if (usb_pipecontrol(pipe)) |
| 234 | return "Ctrl"; |
| 235 | if (usb_pipebulk(pipe)) |
| 236 | return "Bulk"; |
| 237 | return "?"; |
| 238 | } |
| 239 | |
| 240 | /* dump_urb |
| 241 | * write content of URB to syslog for debugging |
| 242 | */ |
| 243 | static inline void dump_urb(enum debuglevel level, const char *tag, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 244 | struct urb *urb) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 245 | { |
| 246 | #ifdef CONFIG_GIGASET_DEBUG |
| 247 | int i; |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 248 | gig_dbg(level, "%s urb(0x%08lx)->{", tag, (unsigned long) urb); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 249 | if (urb) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 250 | gig_dbg(level, |
| 251 | " dev=0x%08lx, pipe=%s:EP%d/DV%d:%s, " |
| 252 | "status=%d, hcpriv=0x%08lx, transfer_flags=0x%x,", |
| 253 | (unsigned long) urb->dev, |
| 254 | usb_pipetype_str(urb->pipe), |
| 255 | usb_pipeendpoint(urb->pipe), usb_pipedevice(urb->pipe), |
| 256 | usb_pipein(urb->pipe) ? "in" : "out", |
| 257 | urb->status, (unsigned long) urb->hcpriv, |
| 258 | urb->transfer_flags); |
| 259 | gig_dbg(level, |
| 260 | " transfer_buffer=0x%08lx[%d], actual_length=%d, " |
| 261 | "bandwidth=%d, setup_packet=0x%08lx,", |
| 262 | (unsigned long) urb->transfer_buffer, |
| 263 | urb->transfer_buffer_length, urb->actual_length, |
| 264 | urb->bandwidth, (unsigned long) urb->setup_packet); |
| 265 | gig_dbg(level, |
| 266 | " start_frame=%d, number_of_packets=%d, interval=%d, " |
| 267 | "error_count=%d,", |
| 268 | urb->start_frame, urb->number_of_packets, urb->interval, |
| 269 | urb->error_count); |
| 270 | gig_dbg(level, |
| 271 | " context=0x%08lx, complete=0x%08lx, " |
| 272 | "iso_frame_desc[]={", |
| 273 | (unsigned long) urb->context, |
| 274 | (unsigned long) urb->complete); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 275 | for (i = 0; i < urb->number_of_packets; i++) { |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 276 | struct usb_iso_packet_descriptor *pifd |
| 277 | = &urb->iso_frame_desc[i]; |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 278 | gig_dbg(level, |
| 279 | " {offset=%u, length=%u, actual_length=%u, " |
| 280 | "status=%u}", |
| 281 | pifd->offset, pifd->length, pifd->actual_length, |
| 282 | pifd->status); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 283 | } |
| 284 | } |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 285 | gig_dbg(level, "}}"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 286 | #endif |
| 287 | } |
| 288 | |
| 289 | /* read/set modem control bits etc. (m10x only) */ |
| 290 | static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 291 | unsigned new_state) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 292 | { |
| 293 | return -EINVAL; |
| 294 | } |
| 295 | |
| 296 | static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) |
| 297 | { |
| 298 | return -EINVAL; |
| 299 | } |
| 300 | |
| 301 | static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) |
| 302 | { |
| 303 | return -EINVAL; |
| 304 | } |
| 305 | |
| 306 | /* error_hangup |
| 307 | * hang up any existing connection because of an unrecoverable error |
| 308 | * This function may be called from any context and takes care of scheduling |
| 309 | * the necessary actions for execution outside of interrupt context. |
| 310 | * argument: |
| 311 | * B channel control structure |
| 312 | */ |
| 313 | static inline void error_hangup(struct bc_state *bcs) |
| 314 | { |
| 315 | struct cardstate *cs = bcs->cs; |
| 316 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 317 | gig_dbg(DEBUG_ANY, "%s: scheduling HUP for channel %d", |
| 318 | __func__, bcs->channel); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 319 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 320 | if (!gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL)) |
| 321 | dev_err(cs->dev, "event queue full\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 322 | |
| 323 | gigaset_schedule_event(cs); |
| 324 | } |
| 325 | |
| 326 | /* error_reset |
| 327 | * reset Gigaset device because of an unrecoverable error |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 328 | * This function may be called from any context, and should take care of |
| 329 | * scheduling the necessary actions for execution outside of interrupt context. |
| 330 | * Right now, it just generates a kernel message calling for help. |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 331 | * argument: |
| 332 | * controller state structure |
| 333 | */ |
| 334 | static inline void error_reset(struct cardstate *cs) |
| 335 | { |
| 336 | //FIXME try to recover without bothering the user |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 337 | dev_err(cs->dev, |
| 338 | "unrecoverable error - please disconnect Gigaset base to reset\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | /* check_pending |
| 342 | * check for completion of pending control request |
| 343 | * parameter: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 344 | * ucs hardware specific controller state structure |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 345 | */ |
| 346 | static void check_pending(struct bas_cardstate *ucs) |
| 347 | { |
| 348 | unsigned long flags; |
| 349 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 350 | spin_lock_irqsave(&ucs->lock, flags); |
| 351 | switch (ucs->pending) { |
| 352 | case 0: |
| 353 | break; |
| 354 | case HD_OPEN_ATCHANNEL: |
| 355 | if (atomic_read(&ucs->basstate) & BS_ATOPEN) |
| 356 | ucs->pending = 0; |
| 357 | break; |
| 358 | case HD_OPEN_B1CHANNEL: |
| 359 | if (atomic_read(&ucs->basstate) & BS_B1OPEN) |
| 360 | ucs->pending = 0; |
| 361 | break; |
| 362 | case HD_OPEN_B2CHANNEL: |
| 363 | if (atomic_read(&ucs->basstate) & BS_B2OPEN) |
| 364 | ucs->pending = 0; |
| 365 | break; |
| 366 | case HD_CLOSE_ATCHANNEL: |
| 367 | if (!(atomic_read(&ucs->basstate) & BS_ATOPEN)) |
| 368 | ucs->pending = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 369 | break; |
| 370 | case HD_CLOSE_B1CHANNEL: |
| 371 | if (!(atomic_read(&ucs->basstate) & BS_B1OPEN)) |
| 372 | ucs->pending = 0; |
| 373 | break; |
| 374 | case HD_CLOSE_B2CHANNEL: |
| 375 | if (!(atomic_read(&ucs->basstate) & BS_B2OPEN)) |
| 376 | ucs->pending = 0; |
| 377 | break; |
| 378 | case HD_DEVICE_INIT_ACK: /* no reply expected */ |
| 379 | ucs->pending = 0; |
| 380 | break; |
| 381 | /* HD_READ_ATMESSAGE, HD_WRITE_ATMESSAGE, HD_RESET_INTERRUPTPIPE |
| 382 | * are handled separately and should never end up here |
| 383 | */ |
| 384 | default: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 385 | dev_warn(&ucs->interface->dev, |
| 386 | "unknown pending request 0x%02x cleared\n", |
| 387 | ucs->pending); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 388 | ucs->pending = 0; |
| 389 | } |
| 390 | |
| 391 | if (!ucs->pending) |
| 392 | del_timer(&ucs->timer_ctrl); |
| 393 | |
| 394 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 395 | } |
| 396 | |
| 397 | /* cmd_in_timeout |
| 398 | * timeout routine for command input request |
| 399 | * argument: |
| 400 | * controller state structure |
| 401 | */ |
| 402 | static void cmd_in_timeout(unsigned long data) |
| 403 | { |
| 404 | struct cardstate *cs = (struct cardstate *) data; |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 405 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 406 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 407 | if (!ucs->rcvbuf_size) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 408 | gig_dbg(DEBUG_USBREQ, "%s: no receive in progress", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 409 | return; |
| 410 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 411 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 412 | dev_err(cs->dev, "timeout reading AT response\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 413 | error_reset(cs); //FIXME retry? |
| 414 | } |
| 415 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 416 | /* set/clear bits in base connection state, return previous state |
| 417 | */ |
| 418 | inline static int update_basstate(struct bas_cardstate *ucs, |
| 419 | int set, int clear) |
| 420 | { |
| 421 | unsigned long flags; |
| 422 | int state; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 423 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 424 | spin_lock_irqsave(&ucs->lock, flags); |
| 425 | state = atomic_read(&ucs->basstate); |
| 426 | atomic_set(&ucs->basstate, (state & ~clear) | set); |
| 427 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 428 | return state; |
| 429 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 430 | |
| 431 | /* atread_submit |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 432 | * submit an HD_READ_ATMESSAGE command URB and optionally start a timeout |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 433 | * parameters: |
| 434 | * cs controller state structure |
| 435 | * timeout timeout in 1/10 sec., 0: none |
| 436 | * return value: |
| 437 | * 0 on success |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 438 | * -EBUSY if another request is pending |
| 439 | * any URB submission error code |
| 440 | */ |
| 441 | static int atread_submit(struct cardstate *cs, int timeout) |
| 442 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 443 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 444 | int ret; |
| 445 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 446 | gig_dbg(DEBUG_USBREQ, "-------> HD_READ_ATMESSAGE (%d)", |
| 447 | ucs->rcvbuf_size); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 448 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 449 | if (update_basstate(ucs, BS_ATRDPEND, 0) & BS_ATRDPEND) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 450 | dev_err(cs->dev, |
| 451 | "could not submit HD_READ_ATMESSAGE: URB busy\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 452 | return -EBUSY; |
| 453 | } |
| 454 | |
| 455 | ucs->dr_cmd_in.bRequestType = IN_VENDOR_REQ; |
| 456 | ucs->dr_cmd_in.bRequest = HD_READ_ATMESSAGE; |
| 457 | ucs->dr_cmd_in.wValue = 0; |
| 458 | ucs->dr_cmd_in.wIndex = 0; |
| 459 | ucs->dr_cmd_in.wLength = cpu_to_le16(ucs->rcvbuf_size); |
| 460 | usb_fill_control_urb(ucs->urb_cmd_in, ucs->udev, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 461 | usb_rcvctrlpipe(ucs->udev, 0), |
| 462 | (unsigned char*) & ucs->dr_cmd_in, |
| 463 | ucs->rcvbuf, ucs->rcvbuf_size, |
| 464 | read_ctrl_callback, cs->inbuf); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 465 | |
| 466 | if ((ret = usb_submit_urb(ucs->urb_cmd_in, SLAB_ATOMIC)) != 0) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 467 | update_basstate(ucs, 0, BS_ATRDPEND); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 468 | dev_err(cs->dev, "could not submit HD_READ_ATMESSAGE: %s\n", |
| 469 | get_usb_statmsg(ret)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 470 | return ret; |
| 471 | } |
| 472 | |
| 473 | if (timeout > 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 474 | gig_dbg(DEBUG_USBREQ, "setting timeout of %d/10 secs", timeout); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 475 | ucs->timer_cmd_in.expires = jiffies + timeout * HZ / 10; |
| 476 | ucs->timer_cmd_in.data = (unsigned long) cs; |
| 477 | ucs->timer_cmd_in.function = cmd_in_timeout; |
| 478 | add_timer(&ucs->timer_cmd_in); |
| 479 | } |
| 480 | return 0; |
| 481 | } |
| 482 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 483 | /* read_int_callback |
| 484 | * USB completion handler for interrupt pipe input |
| 485 | * called by the USB subsystem in interrupt context |
| 486 | * parameter: |
| 487 | * urb USB request block |
| 488 | * urb->context = controller state structure |
| 489 | */ |
| 490 | static void read_int_callback(struct urb *urb, struct pt_regs *regs) |
| 491 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 492 | struct cardstate *cs = urb->context; |
| 493 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 494 | struct bc_state *bcs; |
| 495 | unsigned long flags; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 496 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 497 | unsigned l; |
| 498 | int channel; |
| 499 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 500 | switch (urb->status) { |
| 501 | case 0: /* success */ |
| 502 | break; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 503 | case -ENOENT: /* cancelled */ |
| 504 | case -ECONNRESET: /* cancelled (async) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 505 | case -EINPROGRESS: /* pending */ |
| 506 | /* ignore silently */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 507 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
| 508 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 509 | return; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 510 | case -ENODEV: /* device removed */ |
| 511 | case -ESHUTDOWN: /* device shut down */ |
| 512 | //FIXME use this as disconnect indicator? |
| 513 | gig_dbg(DEBUG_USBREQ, "%s: device disconnected", __func__); |
| 514 | return; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 515 | default: /* severe trouble */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 516 | dev_warn(cs->dev, "interrupt read: %s\n", |
| 517 | get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 518 | //FIXME corrective action? resubmission always ok? |
| 519 | goto resubmit; |
| 520 | } |
| 521 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 522 | /* drop incomplete packets even if the missing bytes wouldn't matter */ |
| 523 | if (unlikely(urb->actual_length < 3)) { |
| 524 | dev_warn(cs->dev, "incomplete interrupt packet (%d bytes)\n", |
| 525 | urb->actual_length); |
| 526 | goto resubmit; |
| 527 | } |
| 528 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 529 | l = (unsigned) ucs->int_in_buf[1] + |
| 530 | (((unsigned) ucs->int_in_buf[2]) << 8); |
| 531 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 532 | gig_dbg(DEBUG_USBREQ, "<-------%d: 0x%02x (%u [0x%02x 0x%02x])", |
| 533 | urb->actual_length, (int)ucs->int_in_buf[0], l, |
| 534 | (int)ucs->int_in_buf[1], (int)ucs->int_in_buf[2]); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 535 | |
| 536 | channel = 0; |
| 537 | |
| 538 | switch (ucs->int_in_buf[0]) { |
| 539 | case HD_DEVICE_INIT_OK: |
| 540 | update_basstate(ucs, BS_INIT, 0); |
| 541 | break; |
| 542 | |
| 543 | case HD_READY_SEND_ATDATA: |
| 544 | del_timer(&ucs->timer_atrdy); |
| 545 | update_basstate(ucs, BS_ATREADY, BS_ATTIMER); |
| 546 | start_cbsend(cs); |
| 547 | break; |
| 548 | |
| 549 | case HD_OPEN_B2CHANNEL_ACK: |
| 550 | ++channel; |
| 551 | case HD_OPEN_B1CHANNEL_ACK: |
| 552 | bcs = cs->bcs + channel; |
| 553 | update_basstate(ucs, BS_B1OPEN << channel, 0); |
| 554 | gigaset_bchannel_up(bcs); |
| 555 | break; |
| 556 | |
| 557 | case HD_OPEN_ATCHANNEL_ACK: |
| 558 | update_basstate(ucs, BS_ATOPEN, 0); |
| 559 | start_cbsend(cs); |
| 560 | break; |
| 561 | |
| 562 | case HD_CLOSE_B2CHANNEL_ACK: |
| 563 | ++channel; |
| 564 | case HD_CLOSE_B1CHANNEL_ACK: |
| 565 | bcs = cs->bcs + channel; |
| 566 | update_basstate(ucs, 0, BS_B1OPEN << channel); |
| 567 | stopurbs(bcs->hw.bas); |
| 568 | gigaset_bchannel_down(bcs); |
| 569 | break; |
| 570 | |
| 571 | case HD_CLOSE_ATCHANNEL_ACK: |
| 572 | update_basstate(ucs, 0, BS_ATOPEN); |
| 573 | break; |
| 574 | |
| 575 | case HD_B2_FLOW_CONTROL: |
| 576 | ++channel; |
| 577 | case HD_B1_FLOW_CONTROL: |
| 578 | bcs = cs->bcs + channel; |
| 579 | atomic_add((l - BAS_NORMFRAME) * BAS_CORRFRAMES, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 580 | &bcs->hw.bas->corrbytes); |
| 581 | gig_dbg(DEBUG_ISO, |
| 582 | "Flow control (channel %d, sub %d): 0x%02x => %d", |
| 583 | channel, bcs->hw.bas->numsub, l, |
| 584 | atomic_read(&bcs->hw.bas->corrbytes)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 585 | break; |
| 586 | |
| 587 | case HD_RECEIVEATDATA_ACK: /* AT response ready to be received */ |
| 588 | if (!l) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 589 | dev_warn(cs->dev, |
| 590 | "HD_RECEIVEATDATA_ACK with length 0 ignored\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 591 | break; |
| 592 | } |
| 593 | spin_lock_irqsave(&cs->lock, flags); |
| 594 | if (ucs->rcvbuf_size) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 595 | /* throw away previous buffer - we have no queue */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 596 | dev_err(cs->dev, |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 597 | "receive AT data overrun, %d bytes lost\n", |
| 598 | ucs->rcvbuf_size); |
| 599 | kfree(ucs->rcvbuf); |
| 600 | ucs->rcvbuf_size = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 601 | } |
| 602 | if ((ucs->rcvbuf = kmalloc(l, GFP_ATOMIC)) == NULL) { |
| 603 | spin_unlock_irqrestore(&cs->lock, flags); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 604 | dev_err(cs->dev, "out of memory receiving AT data\n"); |
| 605 | error_reset(cs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 606 | break; |
| 607 | } |
| 608 | ucs->rcvbuf_size = l; |
| 609 | ucs->retry_cmd_in = 0; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 610 | if ((rc = atread_submit(cs, BAS_TIMEOUT)) < 0) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 611 | kfree(ucs->rcvbuf); |
| 612 | ucs->rcvbuf = NULL; |
| 613 | ucs->rcvbuf_size = 0; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 614 | if (rc != -ENODEV) |
| 615 | //FIXME corrective action? |
| 616 | error_reset(cs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 617 | } |
| 618 | spin_unlock_irqrestore(&cs->lock, flags); |
| 619 | break; |
| 620 | |
| 621 | case HD_RESET_INTERRUPT_PIPE_ACK: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 622 | gig_dbg(DEBUG_USBREQ, "HD_RESET_INTERRUPT_PIPE_ACK"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 623 | break; |
| 624 | |
| 625 | case HD_SUSPEND_END: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 626 | gig_dbg(DEBUG_USBREQ, "HD_SUSPEND_END"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 627 | break; |
| 628 | |
| 629 | default: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 630 | dev_warn(cs->dev, |
| 631 | "unknown Gigaset signal 0x%02x (%u) ignored\n", |
| 632 | (int) ucs->int_in_buf[0], l); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 633 | } |
| 634 | |
| 635 | check_pending(ucs); |
| 636 | |
| 637 | resubmit: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 638 | rc = usb_submit_urb(urb, SLAB_ATOMIC); |
| 639 | if (unlikely(rc != 0 && rc != -ENODEV)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 640 | dev_err(cs->dev, "could not resubmit interrupt URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 641 | get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 642 | error_reset(cs); |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | /* read_ctrl_callback |
| 647 | * USB completion handler for control pipe input |
| 648 | * called by the USB subsystem in interrupt context |
| 649 | * parameter: |
| 650 | * urb USB request block |
| 651 | * urb->context = inbuf structure for controller state |
| 652 | */ |
| 653 | static void read_ctrl_callback(struct urb *urb, struct pt_regs *regs) |
| 654 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 655 | struct inbuf_t *inbuf = urb->context; |
| 656 | struct cardstate *cs = inbuf->cs; |
| 657 | struct bas_cardstate *ucs = cs->hw.bas; |
| 658 | int have_data = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 659 | unsigned numbytes; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 660 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 661 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 662 | update_basstate(ucs, 0, BS_ATRDPEND); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 663 | |
| 664 | if (!ucs->rcvbuf_size) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 665 | dev_warn(cs->dev, "%s: no receive in progress\n", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 666 | return; |
| 667 | } |
| 668 | |
| 669 | del_timer(&ucs->timer_cmd_in); |
| 670 | |
| 671 | switch (urb->status) { |
| 672 | case 0: /* normal completion */ |
| 673 | numbytes = urb->actual_length; |
| 674 | if (unlikely(numbytes == 0)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 675 | dev_warn(cs->dev, |
| 676 | "control read: empty block received\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 677 | goto retry; |
| 678 | } |
| 679 | if (unlikely(numbytes != ucs->rcvbuf_size)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 680 | dev_warn(cs->dev, |
| 681 | "control read: received %d chars, expected %d\n", |
| 682 | numbytes, ucs->rcvbuf_size); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 683 | if (numbytes > ucs->rcvbuf_size) |
| 684 | numbytes = ucs->rcvbuf_size; |
| 685 | } |
| 686 | |
| 687 | /* copy received bytes to inbuf */ |
| 688 | have_data = gigaset_fill_inbuf(inbuf, ucs->rcvbuf, numbytes); |
| 689 | |
| 690 | if (unlikely(numbytes < ucs->rcvbuf_size)) { |
| 691 | /* incomplete - resubmit for remaining bytes */ |
| 692 | ucs->rcvbuf_size -= numbytes; |
| 693 | ucs->retry_cmd_in = 0; |
| 694 | goto retry; |
| 695 | } |
| 696 | break; |
| 697 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 698 | case -ENOENT: /* cancelled */ |
| 699 | case -ECONNRESET: /* cancelled (async) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 700 | case -EINPROGRESS: /* pending */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 701 | case -ENODEV: /* device removed */ |
| 702 | case -ESHUTDOWN: /* device shut down */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 703 | /* no action necessary */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 704 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
| 705 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 706 | break; |
| 707 | |
| 708 | default: /* severe trouble */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 709 | dev_warn(cs->dev, "control read: %s\n", |
| 710 | get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 711 | retry: |
| 712 | if (ucs->retry_cmd_in++ < BAS_RETRY) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 713 | dev_notice(cs->dev, "control read: retry %d\n", |
| 714 | ucs->retry_cmd_in); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 715 | rc = atread_submit(cs, BAS_TIMEOUT); |
| 716 | if (rc >= 0 || rc == -ENODEV) |
| 717 | /* resubmitted or disconnected */ |
| 718 | /* - bypass regular exit block */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 719 | return; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 720 | } else { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 721 | dev_err(cs->dev, |
| 722 | "control read: giving up after %d tries\n", |
| 723 | ucs->retry_cmd_in); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 724 | } |
| 725 | error_reset(cs); |
| 726 | } |
| 727 | |
| 728 | kfree(ucs->rcvbuf); |
| 729 | ucs->rcvbuf = NULL; |
| 730 | ucs->rcvbuf_size = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 731 | if (have_data) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 732 | gig_dbg(DEBUG_INTR, "%s-->BH", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 733 | gigaset_schedule_event(cs); |
| 734 | } |
| 735 | } |
| 736 | |
| 737 | /* read_iso_callback |
| 738 | * USB completion handler for B channel isochronous input |
| 739 | * called by the USB subsystem in interrupt context |
| 740 | * parameter: |
| 741 | * urb USB request block of completed request |
| 742 | * urb->context = bc_state structure |
| 743 | */ |
| 744 | static void read_iso_callback(struct urb *urb, struct pt_regs *regs) |
| 745 | { |
| 746 | struct bc_state *bcs; |
| 747 | struct bas_bc_state *ubc; |
| 748 | unsigned long flags; |
| 749 | int i, rc; |
| 750 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 751 | /* status codes not worth bothering the tasklet with */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 752 | if (unlikely(urb->status == -ENOENT || |
| 753 | urb->status == -ECONNRESET || |
| 754 | urb->status == -EINPROGRESS || |
| 755 | urb->status == -ENODEV || |
| 756 | urb->status == -ESHUTDOWN)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 757 | gig_dbg(DEBUG_ISO, "%s: %s", |
| 758 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 759 | return; |
| 760 | } |
| 761 | |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 762 | bcs = urb->context; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 763 | ubc = bcs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 764 | |
| 765 | spin_lock_irqsave(&ubc->isoinlock, flags); |
| 766 | if (likely(ubc->isoindone == NULL)) { |
| 767 | /* pass URB to tasklet */ |
| 768 | ubc->isoindone = urb; |
| 769 | tasklet_schedule(&ubc->rcvd_tasklet); |
| 770 | } else { |
| 771 | /* tasklet still busy, drop data and resubmit URB */ |
| 772 | ubc->loststatus = urb->status; |
| 773 | for (i = 0; i < BAS_NUMFRAMES; i++) { |
| 774 | ubc->isoinlost += urb->iso_frame_desc[i].actual_length; |
| 775 | if (unlikely(urb->iso_frame_desc[i].status != 0 && |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 776 | urb->iso_frame_desc[i].status != |
| 777 | -EINPROGRESS)) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 778 | ubc->loststatus = urb->iso_frame_desc[i].status; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 779 | urb->iso_frame_desc[i].status = 0; |
| 780 | urb->iso_frame_desc[i].actual_length = 0; |
| 781 | } |
| 782 | if (likely(atomic_read(&ubc->running))) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 783 | /* urb->dev is clobbered by USB subsystem */ |
| 784 | urb->dev = bcs->cs->hw.bas->udev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 785 | urb->transfer_flags = URB_ISO_ASAP; |
| 786 | urb->number_of_packets = BAS_NUMFRAMES; |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 787 | gig_dbg(DEBUG_ISO, "%s: isoc read overrun/resubmit", |
| 788 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 789 | rc = usb_submit_urb(urb, SLAB_ATOMIC); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 790 | if (unlikely(rc != 0 && rc != -ENODEV)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 791 | dev_err(bcs->cs->dev, |
| 792 | "could not resubmit isochronous read " |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 793 | "URB: %s\n", get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 794 | dump_urb(DEBUG_ISO, "isoc read", urb); |
| 795 | error_hangup(bcs); |
| 796 | } |
| 797 | } |
| 798 | } |
| 799 | spin_unlock_irqrestore(&ubc->isoinlock, flags); |
| 800 | } |
| 801 | |
| 802 | /* write_iso_callback |
| 803 | * USB completion handler for B channel isochronous output |
| 804 | * called by the USB subsystem in interrupt context |
| 805 | * parameter: |
| 806 | * urb USB request block of completed request |
| 807 | * urb->context = isow_urbctx_t structure |
| 808 | */ |
| 809 | static void write_iso_callback(struct urb *urb, struct pt_regs *regs) |
| 810 | { |
| 811 | struct isow_urbctx_t *ucx; |
| 812 | struct bas_bc_state *ubc; |
| 813 | unsigned long flags; |
| 814 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 815 | /* status codes not worth bothering the tasklet with */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 816 | if (unlikely(urb->status == -ENOENT || |
| 817 | urb->status == -ECONNRESET || |
| 818 | urb->status == -EINPROGRESS || |
| 819 | urb->status == -ENODEV || |
| 820 | urb->status == -ESHUTDOWN)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 821 | gig_dbg(DEBUG_ISO, "%s: %s", |
| 822 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 823 | return; |
| 824 | } |
| 825 | |
| 826 | /* pass URB context to tasklet */ |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 827 | ucx = urb->context; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 828 | ubc = ucx->bcs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 829 | |
| 830 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 831 | ubc->isooutovfl = ubc->isooutdone; |
| 832 | ubc->isooutdone = ucx; |
| 833 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 834 | tasklet_schedule(&ubc->sent_tasklet); |
| 835 | } |
| 836 | |
| 837 | /* starturbs |
| 838 | * prepare and submit USB request blocks for isochronous input and output |
| 839 | * argument: |
| 840 | * B channel control structure |
| 841 | * return value: |
| 842 | * 0 on success |
| 843 | * < 0 on error (no URBs submitted) |
| 844 | */ |
| 845 | static int starturbs(struct bc_state *bcs) |
| 846 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 847 | struct bas_bc_state *ubc = bcs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 848 | struct urb *urb; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 849 | int j, k; |
| 850 | int rc; |
| 851 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 852 | /* initialize L2 reception */ |
| 853 | if (bcs->proto2 == ISDN_PROTO_L2_HDLC) |
| 854 | bcs->inputstate |= INS_flag_hunt; |
| 855 | |
| 856 | /* submit all isochronous input URBs */ |
| 857 | atomic_set(&ubc->running, 1); |
| 858 | for (k = 0; k < BAS_INURBS; k++) { |
| 859 | urb = ubc->isoinurbs[k]; |
| 860 | if (!urb) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 861 | rc = -EFAULT; |
| 862 | goto error; |
| 863 | } |
| 864 | |
| 865 | urb->dev = bcs->cs->hw.bas->udev; |
| 866 | urb->pipe = usb_rcvisocpipe(urb->dev, 3 + 2 * bcs->channel); |
| 867 | urb->transfer_flags = URB_ISO_ASAP; |
| 868 | urb->transfer_buffer = ubc->isoinbuf + k * BAS_INBUFSIZE; |
| 869 | urb->transfer_buffer_length = BAS_INBUFSIZE; |
| 870 | urb->number_of_packets = BAS_NUMFRAMES; |
| 871 | urb->interval = BAS_FRAMETIME; |
| 872 | urb->complete = read_iso_callback; |
| 873 | urb->context = bcs; |
| 874 | for (j = 0; j < BAS_NUMFRAMES; j++) { |
| 875 | urb->iso_frame_desc[j].offset = j * BAS_MAXFRAME; |
| 876 | urb->iso_frame_desc[j].length = BAS_MAXFRAME; |
| 877 | urb->iso_frame_desc[j].status = 0; |
| 878 | urb->iso_frame_desc[j].actual_length = 0; |
| 879 | } |
| 880 | |
| 881 | dump_urb(DEBUG_ISO, "Initial isoc read", urb); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 882 | if ((rc = usb_submit_urb(urb, SLAB_ATOMIC)) != 0) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 883 | goto error; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 884 | } |
| 885 | |
| 886 | /* initialize L2 transmission */ |
| 887 | gigaset_isowbuf_init(ubc->isooutbuf, PPP_FLAG); |
| 888 | |
| 889 | /* set up isochronous output URBs for flag idling */ |
| 890 | for (k = 0; k < BAS_OUTURBS; ++k) { |
| 891 | urb = ubc->isoouturbs[k].urb; |
| 892 | if (!urb) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 893 | rc = -EFAULT; |
| 894 | goto error; |
| 895 | } |
| 896 | urb->dev = bcs->cs->hw.bas->udev; |
| 897 | urb->pipe = usb_sndisocpipe(urb->dev, 4 + 2 * bcs->channel); |
| 898 | urb->transfer_flags = URB_ISO_ASAP; |
| 899 | urb->transfer_buffer = ubc->isooutbuf->data; |
| 900 | urb->transfer_buffer_length = sizeof(ubc->isooutbuf->data); |
| 901 | urb->number_of_packets = BAS_NUMFRAMES; |
| 902 | urb->interval = BAS_FRAMETIME; |
| 903 | urb->complete = write_iso_callback; |
| 904 | urb->context = &ubc->isoouturbs[k]; |
| 905 | for (j = 0; j < BAS_NUMFRAMES; ++j) { |
| 906 | urb->iso_frame_desc[j].offset = BAS_OUTBUFSIZE; |
| 907 | urb->iso_frame_desc[j].length = BAS_NORMFRAME; |
| 908 | urb->iso_frame_desc[j].status = 0; |
| 909 | urb->iso_frame_desc[j].actual_length = 0; |
| 910 | } |
| 911 | ubc->isoouturbs[k].limit = -1; |
| 912 | } |
| 913 | |
| 914 | /* submit two URBs, keep third one */ |
| 915 | for (k = 0; k < 2; ++k) { |
| 916 | dump_urb(DEBUG_ISO, "Initial isoc write", urb); |
| 917 | rc = usb_submit_urb(ubc->isoouturbs[k].urb, SLAB_ATOMIC); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 918 | if (rc != 0) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 919 | goto error; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 920 | } |
| 921 | dump_urb(DEBUG_ISO, "Initial isoc write (free)", urb); |
| 922 | ubc->isooutfree = &ubc->isoouturbs[2]; |
| 923 | ubc->isooutdone = ubc->isooutovfl = NULL; |
| 924 | return 0; |
| 925 | error: |
| 926 | stopurbs(ubc); |
| 927 | return rc; |
| 928 | } |
| 929 | |
| 930 | /* stopurbs |
| 931 | * cancel the USB request blocks for isochronous input and output |
| 932 | * errors are silently ignored |
| 933 | * argument: |
| 934 | * B channel control structure |
| 935 | */ |
| 936 | static void stopurbs(struct bas_bc_state *ubc) |
| 937 | { |
| 938 | int k, rc; |
| 939 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 940 | atomic_set(&ubc->running, 0); |
| 941 | |
| 942 | for (k = 0; k < BAS_INURBS; ++k) { |
| 943 | rc = usb_unlink_urb(ubc->isoinurbs[k]); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 944 | gig_dbg(DEBUG_ISO, |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 945 | "%s: isoc input URB %d unlinked, result = %s", |
| 946 | __func__, k, get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 947 | } |
| 948 | |
| 949 | for (k = 0; k < BAS_OUTURBS; ++k) { |
| 950 | rc = usb_unlink_urb(ubc->isoouturbs[k].urb); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 951 | gig_dbg(DEBUG_ISO, |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 952 | "%s: isoc output URB %d unlinked, result = %s", |
| 953 | __func__, k, get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 954 | } |
| 955 | } |
| 956 | |
| 957 | /* Isochronous Write - Bottom Half */ |
| 958 | /* =============================== */ |
| 959 | |
| 960 | /* submit_iso_write_urb |
| 961 | * fill and submit the next isochronous write URB |
| 962 | * parameters: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 963 | * ucx context structure containing URB |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 964 | * return value: |
| 965 | * number of frames submitted in URB |
| 966 | * 0 if URB not submitted because no data available (isooutbuf busy) |
| 967 | * error code < 0 on error |
| 968 | */ |
| 969 | static int submit_iso_write_urb(struct isow_urbctx_t *ucx) |
| 970 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 971 | struct urb *urb = ucx->urb; |
| 972 | struct bas_bc_state *ubc = ucx->bcs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 973 | struct usb_iso_packet_descriptor *ifd; |
| 974 | int corrbytes, nframe, rc; |
| 975 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 976 | /* urb->dev is clobbered by USB subsystem */ |
| 977 | urb->dev = ucx->bcs->cs->hw.bas->udev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 978 | urb->transfer_flags = URB_ISO_ASAP; |
| 979 | urb->transfer_buffer = ubc->isooutbuf->data; |
| 980 | urb->transfer_buffer_length = sizeof(ubc->isooutbuf->data); |
| 981 | |
| 982 | for (nframe = 0; nframe < BAS_NUMFRAMES; nframe++) { |
| 983 | ifd = &urb->iso_frame_desc[nframe]; |
| 984 | |
| 985 | /* compute frame length according to flow control */ |
| 986 | ifd->length = BAS_NORMFRAME; |
| 987 | if ((corrbytes = atomic_read(&ubc->corrbytes)) != 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 988 | gig_dbg(DEBUG_ISO, "%s: corrbytes=%d", |
| 989 | __func__, corrbytes); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 990 | if (corrbytes > BAS_HIGHFRAME - BAS_NORMFRAME) |
| 991 | corrbytes = BAS_HIGHFRAME - BAS_NORMFRAME; |
| 992 | else if (corrbytes < BAS_LOWFRAME - BAS_NORMFRAME) |
| 993 | corrbytes = BAS_LOWFRAME - BAS_NORMFRAME; |
| 994 | ifd->length += corrbytes; |
| 995 | atomic_add(-corrbytes, &ubc->corrbytes); |
| 996 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 997 | |
| 998 | /* retrieve block of data to send */ |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 999 | ifd->offset = gigaset_isowbuf_getbytes(ubc->isooutbuf, |
| 1000 | ifd->length); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1001 | if (ifd->offset < 0) { |
| 1002 | if (ifd->offset == -EBUSY) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1003 | gig_dbg(DEBUG_ISO, |
| 1004 | "%s: buffer busy at frame %d", |
| 1005 | __func__, nframe); |
| 1006 | /* tasklet will be restarted from |
| 1007 | gigaset_send_skb() */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1008 | } else { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1009 | dev_err(ucx->bcs->cs->dev, |
| 1010 | "%s: buffer error %d at frame %d\n", |
| 1011 | __func__, ifd->offset, nframe); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1012 | return ifd->offset; |
| 1013 | } |
| 1014 | break; |
| 1015 | } |
| 1016 | ucx->limit = atomic_read(&ubc->isooutbuf->nextread); |
| 1017 | ifd->status = 0; |
| 1018 | ifd->actual_length = 0; |
| 1019 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1020 | if (unlikely(nframe == 0)) |
| 1021 | return 0; /* no data to send */ |
| 1022 | urb->number_of_packets = nframe; |
Tilman Schmidt | 69049cc | 2006-04-10 22:55:16 -0700 | [diff] [blame] | 1023 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1024 | rc = usb_submit_urb(urb, SLAB_ATOMIC); |
| 1025 | if (unlikely(rc)) { |
| 1026 | if (rc == -ENODEV) |
| 1027 | /* device removed - give up silently */ |
| 1028 | gig_dbg(DEBUG_ISO, "%s: disconnected", __func__); |
| 1029 | else |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1030 | dev_err(ucx->bcs->cs->dev, |
| 1031 | "could not submit isochronous write URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1032 | get_usb_rcmsg(rc)); |
| 1033 | return rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1034 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1035 | ++ubc->numsub; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1036 | return nframe; |
| 1037 | } |
| 1038 | |
| 1039 | /* write_iso_tasklet |
| 1040 | * tasklet scheduled when an isochronous output URB from the Gigaset device |
| 1041 | * has completed |
| 1042 | * parameter: |
| 1043 | * data B channel state structure |
| 1044 | */ |
| 1045 | static void write_iso_tasklet(unsigned long data) |
| 1046 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1047 | struct bc_state *bcs = (struct bc_state *) data; |
| 1048 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 1049 | struct cardstate *cs = bcs->cs; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1050 | struct isow_urbctx_t *done, *next, *ovfl; |
| 1051 | struct urb *urb; |
| 1052 | struct usb_iso_packet_descriptor *ifd; |
| 1053 | int offset; |
| 1054 | unsigned long flags; |
| 1055 | int i; |
| 1056 | struct sk_buff *skb; |
| 1057 | int len; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1058 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1059 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1060 | /* loop while completed URBs arrive in time */ |
| 1061 | for (;;) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1062 | if (unlikely(!(atomic_read(&ubc->running)))) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1063 | gig_dbg(DEBUG_ISO, "%s: not running", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1064 | return; |
| 1065 | } |
| 1066 | |
| 1067 | /* retrieve completed URBs */ |
| 1068 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1069 | done = ubc->isooutdone; |
| 1070 | ubc->isooutdone = NULL; |
| 1071 | ovfl = ubc->isooutovfl; |
| 1072 | ubc->isooutovfl = NULL; |
| 1073 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1074 | if (ovfl) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1075 | dev_err(cs->dev, "isochronous write buffer underrun\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1076 | error_hangup(bcs); |
| 1077 | break; |
| 1078 | } |
| 1079 | if (!done) |
| 1080 | break; |
| 1081 | |
| 1082 | /* submit free URB if available */ |
| 1083 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1084 | next = ubc->isooutfree; |
| 1085 | ubc->isooutfree = NULL; |
| 1086 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1087 | if (next) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1088 | rc = submit_iso_write_urb(next); |
| 1089 | if (unlikely(rc <= 0 && rc != -ENODEV)) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1090 | /* could not submit URB, put it back */ |
| 1091 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1092 | if (ubc->isooutfree == NULL) { |
| 1093 | ubc->isooutfree = next; |
| 1094 | next = NULL; |
| 1095 | } |
| 1096 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1097 | if (next) { |
| 1098 | /* couldn't put it back */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1099 | dev_err(cs->dev, |
| 1100 | "losing isochronous write URB\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1101 | error_hangup(bcs); |
| 1102 | } |
| 1103 | } |
| 1104 | } |
| 1105 | |
| 1106 | /* process completed URB */ |
| 1107 | urb = done->urb; |
| 1108 | switch (urb->status) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1109 | case -EXDEV: /* partial completion */ |
| 1110 | gig_dbg(DEBUG_ISO, "%s: URB partially completed", |
| 1111 | __func__); |
| 1112 | /* fall through - what's the difference anyway? */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1113 | case 0: /* normal completion */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1114 | /* inspect individual frames |
| 1115 | * assumptions (for lack of documentation): |
| 1116 | * - actual_length bytes of first frame in error are |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 1117 | * successfully sent |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1118 | * - all following frames are not sent at all |
| 1119 | */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1120 | offset = done->limit; /* default (no error) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1121 | for (i = 0; i < BAS_NUMFRAMES; i++) { |
| 1122 | ifd = &urb->iso_frame_desc[i]; |
| 1123 | if (ifd->status || |
| 1124 | ifd->actual_length != ifd->length) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1125 | dev_warn(cs->dev, |
| 1126 | "isochronous write: frame %d: %s, " |
| 1127 | "only %d of %d bytes sent\n", |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1128 | i, get_usb_statmsg(ifd->status), |
| 1129 | ifd->actual_length, ifd->length); |
| 1130 | offset = (ifd->offset + |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1131 | ifd->actual_length) |
| 1132 | % BAS_OUTBUFSIZE; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1133 | break; |
| 1134 | } |
| 1135 | } |
| 1136 | #ifdef CONFIG_GIGASET_DEBUG |
| 1137 | /* check assumption on remaining frames */ |
| 1138 | for (; i < BAS_NUMFRAMES; i++) { |
| 1139 | ifd = &urb->iso_frame_desc[i]; |
| 1140 | if (ifd->status != -EINPROGRESS |
| 1141 | || ifd->actual_length != 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1142 | dev_warn(cs->dev, |
| 1143 | "isochronous write: frame %d: %s, " |
| 1144 | "%d of %d bytes sent\n", |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1145 | i, get_usb_statmsg(ifd->status), |
| 1146 | ifd->actual_length, ifd->length); |
| 1147 | offset = (ifd->offset + |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1148 | ifd->actual_length) |
| 1149 | % BAS_OUTBUFSIZE; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1150 | break; |
| 1151 | } |
| 1152 | } |
| 1153 | #endif |
| 1154 | break; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1155 | case -EPIPE: /* stall - probably underrun */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1156 | dev_err(cs->dev, "isochronous write stalled\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1157 | error_hangup(bcs); |
| 1158 | break; |
| 1159 | default: /* severe trouble */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1160 | dev_warn(cs->dev, "isochronous write: %s\n", |
| 1161 | get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1162 | } |
| 1163 | |
| 1164 | /* mark the write buffer area covered by this URB as free */ |
| 1165 | if (done->limit >= 0) |
| 1166 | atomic_set(&ubc->isooutbuf->read, done->limit); |
| 1167 | |
| 1168 | /* mark URB as free */ |
| 1169 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1170 | next = ubc->isooutfree; |
| 1171 | ubc->isooutfree = done; |
| 1172 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1173 | if (next) { |
| 1174 | /* only one URB still active - resubmit one */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1175 | rc = submit_iso_write_urb(next); |
| 1176 | if (unlikely(rc <= 0 && rc != -ENODEV)) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1177 | /* couldn't submit */ |
| 1178 | error_hangup(bcs); |
| 1179 | } |
| 1180 | } |
| 1181 | } |
| 1182 | |
| 1183 | /* process queued SKBs */ |
| 1184 | while ((skb = skb_dequeue(&bcs->squeue))) { |
| 1185 | /* copy to output buffer, doing L2 encapsulation */ |
| 1186 | len = skb->len; |
| 1187 | if (gigaset_isoc_buildframe(bcs, skb->data, len) == -EAGAIN) { |
| 1188 | /* insufficient buffer space, push back onto queue */ |
| 1189 | skb_queue_head(&bcs->squeue, skb); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1190 | gig_dbg(DEBUG_ISO, "%s: skb requeued, qlen=%d", |
| 1191 | __func__, skb_queue_len(&bcs->squeue)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1192 | break; |
| 1193 | } |
| 1194 | skb_pull(skb, len); |
| 1195 | gigaset_skb_sent(bcs, skb); |
| 1196 | dev_kfree_skb_any(skb); |
| 1197 | } |
| 1198 | } |
| 1199 | |
| 1200 | /* Isochronous Read - Bottom Half */ |
| 1201 | /* ============================== */ |
| 1202 | |
| 1203 | /* read_iso_tasklet |
| 1204 | * tasklet scheduled when an isochronous input URB from the Gigaset device |
| 1205 | * has completed |
| 1206 | * parameter: |
| 1207 | * data B channel state structure |
| 1208 | */ |
| 1209 | static void read_iso_tasklet(unsigned long data) |
| 1210 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1211 | struct bc_state *bcs = (struct bc_state *) data; |
| 1212 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 1213 | struct cardstate *cs = bcs->cs; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1214 | struct urb *urb; |
| 1215 | char *rcvbuf; |
| 1216 | unsigned long flags; |
| 1217 | int totleft, numbytes, offset, frame, rc; |
| 1218 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1219 | /* loop while more completed URBs arrive in the meantime */ |
| 1220 | for (;;) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1221 | /* retrieve URB */ |
| 1222 | spin_lock_irqsave(&ubc->isoinlock, flags); |
| 1223 | if (!(urb = ubc->isoindone)) { |
| 1224 | spin_unlock_irqrestore(&ubc->isoinlock, flags); |
| 1225 | return; |
| 1226 | } |
| 1227 | ubc->isoindone = NULL; |
| 1228 | if (unlikely(ubc->loststatus != -EINPROGRESS)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1229 | dev_warn(cs->dev, |
| 1230 | "isochronous read overrun, " |
| 1231 | "dropped URB with status: %s, %d bytes lost\n", |
| 1232 | get_usb_statmsg(ubc->loststatus), |
| 1233 | ubc->isoinlost); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1234 | ubc->loststatus = -EINPROGRESS; |
| 1235 | } |
| 1236 | spin_unlock_irqrestore(&ubc->isoinlock, flags); |
| 1237 | |
| 1238 | if (unlikely(!(atomic_read(&ubc->running)))) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1239 | gig_dbg(DEBUG_ISO, |
| 1240 | "%s: channel not running, " |
| 1241 | "dropped URB with status: %s", |
| 1242 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1243 | return; |
| 1244 | } |
| 1245 | |
| 1246 | switch (urb->status) { |
| 1247 | case 0: /* normal completion */ |
| 1248 | break; |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 1249 | case -EXDEV: /* inspect individual frames |
| 1250 | (we do that anyway) */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1251 | gig_dbg(DEBUG_ISO, "%s: URB partially completed", |
| 1252 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1253 | break; |
| 1254 | case -ENOENT: |
| 1255 | case -ECONNRESET: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1256 | case -EINPROGRESS: |
| 1257 | gig_dbg(DEBUG_ISO, "%s: %s", |
| 1258 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1259 | continue; /* -> skip */ |
| 1260 | case -EPIPE: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1261 | dev_err(cs->dev, "isochronous read stalled\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1262 | error_hangup(bcs); |
| 1263 | continue; /* -> skip */ |
| 1264 | default: /* severe trouble */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1265 | dev_warn(cs->dev, "isochronous read: %s\n", |
| 1266 | get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1267 | goto error; |
| 1268 | } |
| 1269 | |
| 1270 | rcvbuf = urb->transfer_buffer; |
| 1271 | totleft = urb->actual_length; |
| 1272 | for (frame = 0; totleft > 0 && frame < BAS_NUMFRAMES; frame++) { |
| 1273 | if (unlikely(urb->iso_frame_desc[frame].status)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1274 | dev_warn(cs->dev, |
| 1275 | "isochronous read: frame %d: %s\n", |
| 1276 | frame, |
| 1277 | get_usb_statmsg( |
| 1278 | urb->iso_frame_desc[frame].status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1279 | break; |
| 1280 | } |
| 1281 | numbytes = urb->iso_frame_desc[frame].actual_length; |
| 1282 | if (unlikely(numbytes > BAS_MAXFRAME)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1283 | dev_warn(cs->dev, |
| 1284 | "isochronous read: frame %d: " |
| 1285 | "numbytes (%d) > BAS_MAXFRAME\n", |
| 1286 | frame, numbytes); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1287 | break; |
| 1288 | } |
| 1289 | if (unlikely(numbytes > totleft)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1290 | dev_warn(cs->dev, |
| 1291 | "isochronous read: frame %d: " |
| 1292 | "numbytes (%d) > totleft (%d)\n", |
| 1293 | frame, numbytes, totleft); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1294 | break; |
| 1295 | } |
| 1296 | offset = urb->iso_frame_desc[frame].offset; |
| 1297 | if (unlikely(offset + numbytes > BAS_INBUFSIZE)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1298 | dev_warn(cs->dev, |
| 1299 | "isochronous read: frame %d: " |
| 1300 | "offset (%d) + numbytes (%d) " |
| 1301 | "> BAS_INBUFSIZE\n", |
| 1302 | frame, offset, numbytes); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1303 | break; |
| 1304 | } |
| 1305 | gigaset_isoc_receive(rcvbuf + offset, numbytes, bcs); |
| 1306 | totleft -= numbytes; |
| 1307 | } |
| 1308 | if (unlikely(totleft > 0)) |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1309 | dev_warn(cs->dev, |
| 1310 | "isochronous read: %d data bytes missing\n", |
| 1311 | totleft); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1312 | |
| 1313 | error: |
| 1314 | /* URB processed, resubmit */ |
| 1315 | for (frame = 0; frame < BAS_NUMFRAMES; frame++) { |
| 1316 | urb->iso_frame_desc[frame].status = 0; |
| 1317 | urb->iso_frame_desc[frame].actual_length = 0; |
| 1318 | } |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1319 | /* urb->dev is clobbered by USB subsystem */ |
| 1320 | urb->dev = bcs->cs->hw.bas->udev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1321 | urb->transfer_flags = URB_ISO_ASAP; |
| 1322 | urb->number_of_packets = BAS_NUMFRAMES; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1323 | rc = usb_submit_urb(urb, SLAB_ATOMIC); |
| 1324 | if (unlikely(rc != 0 && rc != -ENODEV)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1325 | dev_err(cs->dev, |
| 1326 | "could not resubmit isochronous read URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1327 | get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1328 | dump_urb(DEBUG_ISO, "resubmit iso read", urb); |
| 1329 | error_hangup(bcs); |
| 1330 | } |
| 1331 | } |
| 1332 | } |
| 1333 | |
| 1334 | /* Channel Operations */ |
| 1335 | /* ================== */ |
| 1336 | |
| 1337 | /* req_timeout |
| 1338 | * timeout routine for control output request |
| 1339 | * argument: |
| 1340 | * B channel control structure |
| 1341 | */ |
| 1342 | static void req_timeout(unsigned long data) |
| 1343 | { |
| 1344 | struct bc_state *bcs = (struct bc_state *) data; |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1345 | struct bas_cardstate *ucs = bcs->cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1346 | int pending; |
| 1347 | unsigned long flags; |
| 1348 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1349 | check_pending(ucs); |
| 1350 | |
| 1351 | spin_lock_irqsave(&ucs->lock, flags); |
| 1352 | pending = ucs->pending; |
| 1353 | ucs->pending = 0; |
| 1354 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1355 | |
| 1356 | switch (pending) { |
| 1357 | case 0: /* no pending request */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1358 | gig_dbg(DEBUG_USBREQ, "%s: no request pending", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1359 | break; |
| 1360 | |
| 1361 | case HD_OPEN_ATCHANNEL: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1362 | dev_err(bcs->cs->dev, "timeout opening AT channel\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1363 | error_reset(bcs->cs); |
| 1364 | break; |
| 1365 | |
| 1366 | case HD_OPEN_B2CHANNEL: |
| 1367 | case HD_OPEN_B1CHANNEL: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1368 | dev_err(bcs->cs->dev, "timeout opening channel %d\n", |
| 1369 | bcs->channel + 1); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1370 | error_hangup(bcs); |
| 1371 | break; |
| 1372 | |
| 1373 | case HD_CLOSE_ATCHANNEL: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1374 | dev_err(bcs->cs->dev, "timeout closing AT channel\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1375 | break; |
| 1376 | |
| 1377 | case HD_CLOSE_B2CHANNEL: |
| 1378 | case HD_CLOSE_B1CHANNEL: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1379 | dev_err(bcs->cs->dev, "timeout closing channel %d\n", |
| 1380 | bcs->channel + 1); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1381 | break; |
| 1382 | |
| 1383 | default: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1384 | dev_warn(bcs->cs->dev, "request 0x%02x timed out, clearing\n", |
| 1385 | pending); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1386 | } |
| 1387 | } |
| 1388 | |
| 1389 | /* write_ctrl_callback |
| 1390 | * USB completion handler for control pipe output |
| 1391 | * called by the USB subsystem in interrupt context |
| 1392 | * parameter: |
| 1393 | * urb USB request block of completed request |
| 1394 | * urb->context = hardware specific controller state structure |
| 1395 | */ |
| 1396 | static void write_ctrl_callback(struct urb *urb, struct pt_regs *regs) |
| 1397 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1398 | struct bas_cardstate *ucs = urb->context; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1399 | unsigned long flags; |
| 1400 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1401 | spin_lock_irqsave(&ucs->lock, flags); |
| 1402 | if (urb->status && ucs->pending) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1403 | dev_err(&ucs->interface->dev, |
| 1404 | "control request 0x%02x failed: %s\n", |
| 1405 | ucs->pending, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1406 | del_timer(&ucs->timer_ctrl); |
| 1407 | ucs->pending = 0; |
| 1408 | } |
| 1409 | /* individual handling of specific request types */ |
| 1410 | switch (ucs->pending) { |
| 1411 | case HD_DEVICE_INIT_ACK: /* no reply expected */ |
| 1412 | ucs->pending = 0; |
| 1413 | break; |
| 1414 | } |
| 1415 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1416 | } |
| 1417 | |
| 1418 | /* req_submit |
| 1419 | * submit a control output request without message buffer to the Gigaset base |
| 1420 | * and optionally start a timeout |
| 1421 | * parameters: |
| 1422 | * bcs B channel control structure |
| 1423 | * req control request code (HD_*) |
| 1424 | * val control request parameter value (set to 0 if unused) |
| 1425 | * timeout timeout in seconds (0: no timeout) |
| 1426 | * return value: |
| 1427 | * 0 on success |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1428 | * -EBUSY if another request is pending |
| 1429 | * any URB submission error code |
| 1430 | */ |
| 1431 | static int req_submit(struct bc_state *bcs, int req, int val, int timeout) |
| 1432 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1433 | struct bas_cardstate *ucs = bcs->cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1434 | int ret; |
| 1435 | unsigned long flags; |
| 1436 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1437 | gig_dbg(DEBUG_USBREQ, "-------> 0x%02x (%d)", req, val); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1438 | |
| 1439 | spin_lock_irqsave(&ucs->lock, flags); |
| 1440 | if (ucs->pending) { |
| 1441 | spin_unlock_irqrestore(&ucs->lock, flags); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1442 | dev_err(bcs->cs->dev, |
| 1443 | "submission of request 0x%02x failed: " |
| 1444 | "request 0x%02x still pending\n", |
| 1445 | req, ucs->pending); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1446 | return -EBUSY; |
| 1447 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1448 | |
| 1449 | ucs->dr_ctrl.bRequestType = OUT_VENDOR_REQ; |
| 1450 | ucs->dr_ctrl.bRequest = req; |
| 1451 | ucs->dr_ctrl.wValue = cpu_to_le16(val); |
| 1452 | ucs->dr_ctrl.wIndex = 0; |
| 1453 | ucs->dr_ctrl.wLength = 0; |
| 1454 | usb_fill_control_urb(ucs->urb_ctrl, ucs->udev, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1455 | usb_sndctrlpipe(ucs->udev, 0), |
| 1456 | (unsigned char*) &ucs->dr_ctrl, NULL, 0, |
| 1457 | write_ctrl_callback, ucs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1458 | if ((ret = usb_submit_urb(ucs->urb_ctrl, SLAB_ATOMIC)) != 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1459 | dev_err(bcs->cs->dev, "could not submit request 0x%02x: %s\n", |
| 1460 | req, get_usb_statmsg(ret)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1461 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1462 | return ret; |
| 1463 | } |
| 1464 | ucs->pending = req; |
| 1465 | |
| 1466 | if (timeout > 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1467 | gig_dbg(DEBUG_USBREQ, "setting timeout of %d/10 secs", timeout); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1468 | ucs->timer_ctrl.expires = jiffies + timeout * HZ / 10; |
| 1469 | ucs->timer_ctrl.data = (unsigned long) bcs; |
| 1470 | ucs->timer_ctrl.function = req_timeout; |
| 1471 | add_timer(&ucs->timer_ctrl); |
| 1472 | } |
| 1473 | |
| 1474 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1475 | return 0; |
| 1476 | } |
| 1477 | |
| 1478 | /* gigaset_init_bchannel |
| 1479 | * called by common.c to connect a B channel |
| 1480 | * initialize isochronous I/O and tell the Gigaset base to open the channel |
| 1481 | * argument: |
| 1482 | * B channel control structure |
| 1483 | * return value: |
| 1484 | * 0 on success, error code < 0 on error |
| 1485 | */ |
| 1486 | static int gigaset_init_bchannel(struct bc_state *bcs) |
| 1487 | { |
| 1488 | int req, ret; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1489 | unsigned long flags; |
| 1490 | |
| 1491 | spin_lock_irqsave(&bcs->cs->lock, flags); |
| 1492 | if (unlikely(!bcs->cs->connected)) { |
| 1493 | gig_dbg(DEBUG_USBREQ, "%s: not connected", __func__); |
| 1494 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
| 1495 | return -ENODEV; |
| 1496 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1497 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1498 | if ((ret = starturbs(bcs)) < 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1499 | dev_err(bcs->cs->dev, |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1500 | "could not start isochronous I/O for channel B%d: %s\n", |
| 1501 | bcs->channel + 1, |
| 1502 | ret == -EFAULT ? "null URB" : get_usb_rcmsg(ret)); |
| 1503 | if (ret != -ENODEV) |
| 1504 | error_hangup(bcs); |
| 1505 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1506 | return ret; |
| 1507 | } |
| 1508 | |
| 1509 | req = bcs->channel ? HD_OPEN_B2CHANNEL : HD_OPEN_B1CHANNEL; |
| 1510 | if ((ret = req_submit(bcs, req, 0, BAS_TIMEOUT)) < 0) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1511 | dev_err(bcs->cs->dev, "could not open channel B%d\n", |
| 1512 | bcs->channel + 1); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1513 | stopurbs(bcs->hw.bas); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1514 | if (ret != -ENODEV) |
| 1515 | error_hangup(bcs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1516 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1517 | |
| 1518 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1519 | return ret; |
| 1520 | } |
| 1521 | |
| 1522 | /* gigaset_close_bchannel |
| 1523 | * called by common.c to disconnect a B channel |
| 1524 | * tell the Gigaset base to close the channel |
| 1525 | * stopping isochronous I/O and LL notification will be done when the |
| 1526 | * acknowledgement for the close arrives |
| 1527 | * argument: |
| 1528 | * B channel control structure |
| 1529 | * return value: |
| 1530 | * 0 on success, error code < 0 on error |
| 1531 | */ |
| 1532 | static int gigaset_close_bchannel(struct bc_state *bcs) |
| 1533 | { |
| 1534 | int req, ret; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1535 | unsigned long flags; |
| 1536 | |
| 1537 | spin_lock_irqsave(&bcs->cs->lock, flags); |
| 1538 | if (unlikely(!bcs->cs->connected)) { |
| 1539 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
| 1540 | gig_dbg(DEBUG_USBREQ, "%s: not connected", __func__); |
| 1541 | return -ENODEV; |
| 1542 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1543 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1544 | if (!(atomic_read(&bcs->cs->hw.bas->basstate) & |
| 1545 | (bcs->channel ? BS_B2OPEN : BS_B1OPEN))) { |
| 1546 | /* channel not running: just signal common.c */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1547 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1548 | gigaset_bchannel_down(bcs); |
| 1549 | return 0; |
| 1550 | } |
| 1551 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1552 | /* channel running: tell device to close it */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1553 | req = bcs->channel ? HD_CLOSE_B2CHANNEL : HD_CLOSE_B1CHANNEL; |
| 1554 | if ((ret = req_submit(bcs, req, 0, BAS_TIMEOUT)) < 0) |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1555 | dev_err(bcs->cs->dev, "closing channel B%d failed\n", |
| 1556 | bcs->channel + 1); |
| 1557 | |
| 1558 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1559 | return ret; |
| 1560 | } |
| 1561 | |
| 1562 | /* Device Operations */ |
| 1563 | /* ================= */ |
| 1564 | |
| 1565 | /* complete_cb |
| 1566 | * unqueue first command buffer from queue, waking any sleepers |
| 1567 | * must be called with cs->cmdlock held |
| 1568 | * parameter: |
| 1569 | * cs controller state structure |
| 1570 | */ |
| 1571 | static void complete_cb(struct cardstate *cs) |
| 1572 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1573 | struct cmdbuf_t *cb = cs->cmdbuf; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1574 | |
| 1575 | /* unqueue completed buffer */ |
| 1576 | cs->cmdbytes -= cs->curlen; |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1577 | gig_dbg(DEBUG_TRANSCMD|DEBUG_LOCKCMD, |
| 1578 | "write_command: sent %u bytes, %u left", |
| 1579 | cs->curlen, cs->cmdbytes); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1580 | if ((cs->cmdbuf = cb->next) != NULL) { |
| 1581 | cs->cmdbuf->prev = NULL; |
| 1582 | cs->curlen = cs->cmdbuf->len; |
| 1583 | } else { |
| 1584 | cs->lastcmdbuf = NULL; |
| 1585 | cs->curlen = 0; |
| 1586 | } |
| 1587 | |
| 1588 | if (cb->wake_tasklet) |
| 1589 | tasklet_schedule(cb->wake_tasklet); |
| 1590 | |
| 1591 | kfree(cb); |
| 1592 | } |
| 1593 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1594 | /* write_command_callback |
| 1595 | * USB completion handler for AT command transmission |
| 1596 | * called by the USB subsystem in interrupt context |
| 1597 | * parameter: |
| 1598 | * urb USB request block of completed request |
| 1599 | * urb->context = controller state structure |
| 1600 | */ |
| 1601 | static void write_command_callback(struct urb *urb, struct pt_regs *regs) |
| 1602 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1603 | struct cardstate *cs = urb->context; |
| 1604 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1605 | unsigned long flags; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1606 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1607 | update_basstate(ucs, 0, BS_ATWRPEND); |
| 1608 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1609 | /* check status */ |
| 1610 | switch (urb->status) { |
| 1611 | case 0: /* normal completion */ |
| 1612 | break; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1613 | case -ENOENT: /* cancelled */ |
| 1614 | case -ECONNRESET: /* cancelled (async) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1615 | case -EINPROGRESS: /* pending */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1616 | case -ENODEV: /* device removed */ |
| 1617 | case -ESHUTDOWN: /* device shut down */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1618 | /* ignore silently */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1619 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
| 1620 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1621 | return; |
| 1622 | default: /* any failure */ |
| 1623 | if (++ucs->retry_cmd_out > BAS_RETRY) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1624 | dev_warn(cs->dev, |
| 1625 | "command write: %s, " |
| 1626 | "giving up after %d retries\n", |
| 1627 | get_usb_statmsg(urb->status), |
| 1628 | ucs->retry_cmd_out); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1629 | break; |
| 1630 | } |
| 1631 | if (cs->cmdbuf == NULL) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1632 | dev_warn(cs->dev, |
| 1633 | "command write: %s, " |
| 1634 | "cannot retry - cmdbuf gone\n", |
| 1635 | get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1636 | break; |
| 1637 | } |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1638 | dev_notice(cs->dev, "command write: %s, retry %d\n", |
| 1639 | get_usb_statmsg(urb->status), ucs->retry_cmd_out); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1640 | if (atwrite_submit(cs, cs->cmdbuf->buf, cs->cmdbuf->len) >= 0) |
| 1641 | /* resubmitted - bypass regular exit block */ |
| 1642 | return; |
| 1643 | /* command send failed, assume base still waiting */ |
| 1644 | update_basstate(ucs, BS_ATREADY, 0); |
| 1645 | } |
| 1646 | |
| 1647 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1648 | if (cs->cmdbuf != NULL) |
| 1649 | complete_cb(cs); |
| 1650 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1651 | } |
| 1652 | |
| 1653 | /* atrdy_timeout |
| 1654 | * timeout routine for AT command transmission |
| 1655 | * argument: |
| 1656 | * controller state structure |
| 1657 | */ |
| 1658 | static void atrdy_timeout(unsigned long data) |
| 1659 | { |
| 1660 | struct cardstate *cs = (struct cardstate *) data; |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1661 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1662 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1663 | dev_warn(cs->dev, "timeout waiting for HD_READY_SEND_ATDATA\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1664 | |
| 1665 | /* fake the missing signal - what else can I do? */ |
| 1666 | update_basstate(ucs, BS_ATREADY, BS_ATTIMER); |
| 1667 | start_cbsend(cs); |
| 1668 | } |
| 1669 | |
| 1670 | /* atwrite_submit |
| 1671 | * submit an HD_WRITE_ATMESSAGE command URB |
| 1672 | * parameters: |
| 1673 | * cs controller state structure |
| 1674 | * buf buffer containing command to send |
| 1675 | * len length of command to send |
| 1676 | * return value: |
| 1677 | * 0 on success |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1678 | * -EBUSY if another request is pending |
| 1679 | * any URB submission error code |
| 1680 | */ |
| 1681 | static int atwrite_submit(struct cardstate *cs, unsigned char *buf, int len) |
| 1682 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1683 | struct bas_cardstate *ucs = cs->hw.bas; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1684 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1685 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1686 | gig_dbg(DEBUG_USBREQ, "-------> HD_WRITE_ATMESSAGE (%d)", len); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1687 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1688 | if (update_basstate(ucs, BS_ATWRPEND, 0) & BS_ATWRPEND) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1689 | dev_err(cs->dev, |
| 1690 | "could not submit HD_WRITE_ATMESSAGE: URB busy\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1691 | return -EBUSY; |
| 1692 | } |
| 1693 | |
| 1694 | ucs->dr_cmd_out.bRequestType = OUT_VENDOR_REQ; |
| 1695 | ucs->dr_cmd_out.bRequest = HD_WRITE_ATMESSAGE; |
| 1696 | ucs->dr_cmd_out.wValue = 0; |
| 1697 | ucs->dr_cmd_out.wIndex = 0; |
| 1698 | ucs->dr_cmd_out.wLength = cpu_to_le16(len); |
| 1699 | usb_fill_control_urb(ucs->urb_cmd_out, ucs->udev, |
| 1700 | usb_sndctrlpipe(ucs->udev, 0), |
| 1701 | (unsigned char*) &ucs->dr_cmd_out, buf, len, |
| 1702 | write_command_callback, cs); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1703 | rc = usb_submit_urb(ucs->urb_cmd_out, SLAB_ATOMIC); |
| 1704 | if (unlikely(rc)) { |
| 1705 | update_basstate(ucs, 0, BS_ATWRPEND); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1706 | dev_err(cs->dev, "could not submit HD_WRITE_ATMESSAGE: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1707 | get_usb_rcmsg(rc)); |
| 1708 | return rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1709 | } |
| 1710 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1711 | /* submitted successfully, start timeout if necessary */ |
| 1712 | if (!(update_basstate(ucs, BS_ATTIMER, BS_ATREADY) & BS_ATTIMER)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1713 | gig_dbg(DEBUG_OUTPUT, "setting ATREADY timeout of %d/10 secs", |
| 1714 | ATRDY_TIMEOUT); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1715 | ucs->timer_atrdy.expires = jiffies + ATRDY_TIMEOUT * HZ / 10; |
| 1716 | ucs->timer_atrdy.data = (unsigned long) cs; |
| 1717 | ucs->timer_atrdy.function = atrdy_timeout; |
| 1718 | add_timer(&ucs->timer_atrdy); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1719 | } |
| 1720 | return 0; |
| 1721 | } |
| 1722 | |
| 1723 | /* start_cbsend |
| 1724 | * start transmission of AT command queue if necessary |
| 1725 | * parameter: |
| 1726 | * cs controller state structure |
| 1727 | * return value: |
| 1728 | * 0 on success |
| 1729 | * error code < 0 on error |
| 1730 | */ |
| 1731 | static int start_cbsend(struct cardstate *cs) |
| 1732 | { |
| 1733 | struct cmdbuf_t *cb; |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1734 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1735 | unsigned long flags; |
| 1736 | int rc; |
| 1737 | int retval = 0; |
| 1738 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1739 | /* check if AT channel is open */ |
| 1740 | if (!(atomic_read(&ucs->basstate) & BS_ATOPEN)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1741 | gig_dbg(DEBUG_TRANSCMD|DEBUG_LOCKCMD, "AT channel not open"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1742 | rc = req_submit(cs->bcs, HD_OPEN_ATCHANNEL, 0, BAS_TIMEOUT); |
| 1743 | if (rc < 0) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1744 | /* flush command queue */ |
| 1745 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1746 | while (cs->cmdbuf != NULL) |
| 1747 | complete_cb(cs); |
| 1748 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1749 | } |
| 1750 | return rc; |
| 1751 | } |
| 1752 | |
| 1753 | /* try to send first command in queue */ |
| 1754 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1755 | |
| 1756 | while ((cb = cs->cmdbuf) != NULL && |
| 1757 | atomic_read(&ucs->basstate) & BS_ATREADY) { |
| 1758 | ucs->retry_cmd_out = 0; |
| 1759 | rc = atwrite_submit(cs, cb->buf, cb->len); |
| 1760 | if (unlikely(rc)) { |
| 1761 | retval = rc; |
| 1762 | complete_cb(cs); |
| 1763 | } |
| 1764 | } |
| 1765 | |
| 1766 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1767 | return retval; |
| 1768 | } |
| 1769 | |
| 1770 | /* gigaset_write_cmd |
| 1771 | * This function is called by the device independent part of the driver |
| 1772 | * to transmit an AT command string to the Gigaset device. |
| 1773 | * It encapsulates the device specific method for transmission over the |
| 1774 | * direct USB connection to the base. |
| 1775 | * The command string is added to the queue of commands to send, and |
| 1776 | * USB transmission is started if necessary. |
| 1777 | * parameters: |
| 1778 | * cs controller state structure |
| 1779 | * buf command string to send |
| 1780 | * len number of bytes to send (max. IF_WRITEBUF) |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 1781 | * wake_tasklet tasklet to run when transmission is completed |
| 1782 | * (NULL if none) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1783 | * return value: |
| 1784 | * number of bytes queued on success |
| 1785 | * error code < 0 on error |
| 1786 | */ |
| 1787 | static int gigaset_write_cmd(struct cardstate *cs, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1788 | const unsigned char *buf, int len, |
| 1789 | struct tasklet_struct *wake_tasklet) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1790 | { |
| 1791 | struct cmdbuf_t *cb; |
| 1792 | unsigned long flags; |
| 1793 | int status; |
| 1794 | |
| 1795 | gigaset_dbg_buffer(atomic_read(&cs->mstate) != MS_LOCKED ? |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1796 | DEBUG_TRANSCMD : DEBUG_LOCKCMD, |
Tilman Schmidt | 0137150 | 2006-04-10 22:55:11 -0700 | [diff] [blame] | 1797 | "CMD Transmit", len, buf); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1798 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1799 | if (len <= 0) |
| 1800 | return 0; /* nothing to do */ |
| 1801 | |
| 1802 | if (len > IF_WRITEBUF) |
| 1803 | len = IF_WRITEBUF; |
| 1804 | if (!(cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC))) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1805 | dev_err(cs->dev, "%s: out of memory\n", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1806 | return -ENOMEM; |
| 1807 | } |
| 1808 | |
| 1809 | memcpy(cb->buf, buf, len); |
| 1810 | cb->len = len; |
| 1811 | cb->offset = 0; |
| 1812 | cb->next = NULL; |
| 1813 | cb->wake_tasklet = wake_tasklet; |
| 1814 | |
| 1815 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1816 | cb->prev = cs->lastcmdbuf; |
| 1817 | if (cs->lastcmdbuf) |
| 1818 | cs->lastcmdbuf->next = cb; |
| 1819 | else { |
| 1820 | cs->cmdbuf = cb; |
| 1821 | cs->curlen = len; |
| 1822 | } |
| 1823 | cs->cmdbytes += len; |
| 1824 | cs->lastcmdbuf = cb; |
| 1825 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1826 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1827 | spin_lock_irqsave(&cs->lock, flags); |
| 1828 | if (unlikely(!cs->connected)) { |
| 1829 | spin_unlock_irqrestore(&cs->lock, flags); |
| 1830 | gig_dbg(DEBUG_USBREQ, "%s: not connected", __func__); |
| 1831 | return -ENODEV; |
| 1832 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1833 | status = start_cbsend(cs); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1834 | spin_unlock_irqrestore(&cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1835 | return status < 0 ? status : len; |
| 1836 | } |
| 1837 | |
| 1838 | /* gigaset_write_room |
| 1839 | * tty_driver.write_room interface routine |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 1840 | * return number of characters the driver will accept to be written via |
| 1841 | * gigaset_write_cmd |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1842 | * parameter: |
| 1843 | * controller state structure |
| 1844 | * return value: |
| 1845 | * number of characters |
| 1846 | */ |
| 1847 | static int gigaset_write_room(struct cardstate *cs) |
| 1848 | { |
| 1849 | return IF_WRITEBUF; |
| 1850 | } |
| 1851 | |
| 1852 | /* gigaset_chars_in_buffer |
| 1853 | * tty_driver.chars_in_buffer interface routine |
| 1854 | * return number of characters waiting to be sent |
| 1855 | * parameter: |
| 1856 | * controller state structure |
| 1857 | * return value: |
| 1858 | * number of characters |
| 1859 | */ |
| 1860 | static int gigaset_chars_in_buffer(struct cardstate *cs) |
| 1861 | { |
| 1862 | unsigned long flags; |
| 1863 | unsigned bytes; |
| 1864 | |
| 1865 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1866 | bytes = cs->cmdbytes; |
| 1867 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1868 | |
| 1869 | return bytes; |
| 1870 | } |
| 1871 | |
| 1872 | /* gigaset_brkchars |
| 1873 | * implementation of ioctl(GIGASET_BRKCHARS) |
| 1874 | * parameter: |
| 1875 | * controller state structure |
| 1876 | * return value: |
| 1877 | * -EINVAL (unimplemented function) |
| 1878 | */ |
| 1879 | static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6]) |
| 1880 | { |
| 1881 | return -EINVAL; |
| 1882 | } |
| 1883 | |
| 1884 | |
| 1885 | /* Device Initialization/Shutdown */ |
| 1886 | /* ============================== */ |
| 1887 | |
| 1888 | /* Free hardware dependent part of the B channel structure |
| 1889 | * parameter: |
| 1890 | * bcs B channel structure |
| 1891 | * return value: |
| 1892 | * !=0 on success |
| 1893 | */ |
| 1894 | static int gigaset_freebcshw(struct bc_state *bcs) |
| 1895 | { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1896 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 1897 | int i; |
| 1898 | |
| 1899 | if (!ubc) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1900 | return 0; |
| 1901 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1902 | /* kill URBs and tasklets before freeing - better safe than sorry */ |
| 1903 | atomic_set(&ubc->running, 0); |
| 1904 | for (i = 0; i < BAS_OUTURBS; ++i) |
| 1905 | if (ubc->isoouturbs[i].urb) { |
| 1906 | gig_dbg(DEBUG_INIT, "%s: killing iso out URB %d", |
| 1907 | __func__, i); |
| 1908 | usb_kill_urb(ubc->isoouturbs[i].urb); |
| 1909 | usb_free_urb(ubc->isoouturbs[i].urb); |
| 1910 | } |
| 1911 | for (i = 0; i < BAS_INURBS; ++i) |
| 1912 | if (ubc->isoinurbs[i]) { |
| 1913 | gig_dbg(DEBUG_INIT, "%s: killing iso in URB %d", |
| 1914 | __func__, i); |
| 1915 | usb_kill_urb(ubc->isoinurbs[i]); |
| 1916 | usb_free_urb(ubc->isoinurbs[i]); |
| 1917 | } |
| 1918 | tasklet_kill(&ubc->sent_tasklet); |
| 1919 | tasklet_kill(&ubc->rcvd_tasklet); |
| 1920 | kfree(ubc->isooutbuf); |
| 1921 | kfree(ubc); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1922 | bcs->hw.bas = NULL; |
| 1923 | return 1; |
| 1924 | } |
| 1925 | |
| 1926 | /* Initialize hardware dependent part of the B channel structure |
| 1927 | * parameter: |
| 1928 | * bcs B channel structure |
| 1929 | * return value: |
| 1930 | * !=0 on success |
| 1931 | */ |
| 1932 | static int gigaset_initbcshw(struct bc_state *bcs) |
| 1933 | { |
| 1934 | int i; |
| 1935 | struct bas_bc_state *ubc; |
| 1936 | |
| 1937 | bcs->hw.bas = ubc = kmalloc(sizeof(struct bas_bc_state), GFP_KERNEL); |
| 1938 | if (!ubc) { |
| 1939 | err("could not allocate bas_bc_state"); |
| 1940 | return 0; |
| 1941 | } |
| 1942 | |
| 1943 | atomic_set(&ubc->running, 0); |
| 1944 | atomic_set(&ubc->corrbytes, 0); |
| 1945 | spin_lock_init(&ubc->isooutlock); |
| 1946 | for (i = 0; i < BAS_OUTURBS; ++i) { |
| 1947 | ubc->isoouturbs[i].urb = NULL; |
| 1948 | ubc->isoouturbs[i].bcs = bcs; |
| 1949 | } |
| 1950 | ubc->isooutdone = ubc->isooutfree = ubc->isooutovfl = NULL; |
| 1951 | ubc->numsub = 0; |
| 1952 | if (!(ubc->isooutbuf = kmalloc(sizeof(struct isowbuf_t), GFP_KERNEL))) { |
| 1953 | err("could not allocate isochronous output buffer"); |
| 1954 | kfree(ubc); |
| 1955 | bcs->hw.bas = NULL; |
| 1956 | return 0; |
| 1957 | } |
| 1958 | tasklet_init(&ubc->sent_tasklet, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1959 | &write_iso_tasklet, (unsigned long) bcs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1960 | |
| 1961 | spin_lock_init(&ubc->isoinlock); |
| 1962 | for (i = 0; i < BAS_INURBS; ++i) |
| 1963 | ubc->isoinurbs[i] = NULL; |
| 1964 | ubc->isoindone = NULL; |
| 1965 | ubc->loststatus = -EINPROGRESS; |
| 1966 | ubc->isoinlost = 0; |
| 1967 | ubc->seqlen = 0; |
| 1968 | ubc->inbyte = 0; |
| 1969 | ubc->inbits = 0; |
| 1970 | ubc->goodbytes = 0; |
| 1971 | ubc->alignerrs = 0; |
| 1972 | ubc->fcserrs = 0; |
| 1973 | ubc->frameerrs = 0; |
| 1974 | ubc->giants = 0; |
| 1975 | ubc->runts = 0; |
| 1976 | ubc->aborts = 0; |
| 1977 | ubc->shared0s = 0; |
| 1978 | ubc->stolen0s = 0; |
| 1979 | tasklet_init(&ubc->rcvd_tasklet, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1980 | &read_iso_tasklet, (unsigned long) bcs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1981 | return 1; |
| 1982 | } |
| 1983 | |
| 1984 | static void gigaset_reinitbcshw(struct bc_state *bcs) |
| 1985 | { |
| 1986 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 1987 | |
| 1988 | atomic_set(&bcs->hw.bas->running, 0); |
| 1989 | atomic_set(&bcs->hw.bas->corrbytes, 0); |
| 1990 | bcs->hw.bas->numsub = 0; |
| 1991 | spin_lock_init(&ubc->isooutlock); |
| 1992 | spin_lock_init(&ubc->isoinlock); |
| 1993 | ubc->loststatus = -EINPROGRESS; |
| 1994 | } |
| 1995 | |
| 1996 | static void gigaset_freecshw(struct cardstate *cs) |
| 1997 | { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 1998 | /* timers, URBs and rcvbuf are disposed of in disconnect */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1999 | kfree(cs->hw.bas); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2000 | cs->hw.bas = NULL; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2001 | } |
| 2002 | |
| 2003 | static int gigaset_initcshw(struct cardstate *cs) |
| 2004 | { |
| 2005 | struct bas_cardstate *ucs; |
| 2006 | |
| 2007 | cs->hw.bas = ucs = kmalloc(sizeof *ucs, GFP_KERNEL); |
| 2008 | if (!ucs) |
| 2009 | return 0; |
| 2010 | |
| 2011 | ucs->urb_cmd_in = NULL; |
| 2012 | ucs->urb_cmd_out = NULL; |
| 2013 | ucs->rcvbuf = NULL; |
| 2014 | ucs->rcvbuf_size = 0; |
| 2015 | |
| 2016 | spin_lock_init(&ucs->lock); |
| 2017 | ucs->pending = 0; |
| 2018 | |
| 2019 | atomic_set(&ucs->basstate, 0); |
| 2020 | init_timer(&ucs->timer_ctrl); |
| 2021 | init_timer(&ucs->timer_atrdy); |
| 2022 | init_timer(&ucs->timer_cmd_in); |
| 2023 | |
| 2024 | return 1; |
| 2025 | } |
| 2026 | |
| 2027 | /* freeurbs |
| 2028 | * unlink and deallocate all URBs unconditionally |
| 2029 | * caller must make sure that no commands are still in progress |
| 2030 | * parameter: |
| 2031 | * cs controller state structure |
| 2032 | */ |
| 2033 | static void freeurbs(struct cardstate *cs) |
| 2034 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 2035 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2036 | struct bas_bc_state *ubc; |
| 2037 | int i, j; |
| 2038 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2039 | for (j = 0; j < 2; ++j) { |
| 2040 | ubc = cs->bcs[j].hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2041 | for (i = 0; i < BAS_OUTURBS; ++i) |
| 2042 | if (ubc->isoouturbs[i].urb) { |
| 2043 | usb_kill_urb(ubc->isoouturbs[i].urb); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2044 | gig_dbg(DEBUG_INIT, |
| 2045 | "%s: isoc output URB %d/%d unlinked", |
| 2046 | __func__, j, i); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2047 | usb_free_urb(ubc->isoouturbs[i].urb); |
| 2048 | ubc->isoouturbs[i].urb = NULL; |
| 2049 | } |
| 2050 | for (i = 0; i < BAS_INURBS; ++i) |
| 2051 | if (ubc->isoinurbs[i]) { |
| 2052 | usb_kill_urb(ubc->isoinurbs[i]); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2053 | gig_dbg(DEBUG_INIT, |
| 2054 | "%s: isoc input URB %d/%d unlinked", |
| 2055 | __func__, j, i); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2056 | usb_free_urb(ubc->isoinurbs[i]); |
| 2057 | ubc->isoinurbs[i] = NULL; |
| 2058 | } |
| 2059 | } |
| 2060 | if (ucs->urb_int_in) { |
| 2061 | usb_kill_urb(ucs->urb_int_in); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2062 | gig_dbg(DEBUG_INIT, "%s: interrupt input URB unlinked", |
| 2063 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2064 | usb_free_urb(ucs->urb_int_in); |
| 2065 | ucs->urb_int_in = NULL; |
| 2066 | } |
| 2067 | if (ucs->urb_cmd_out) { |
| 2068 | usb_kill_urb(ucs->urb_cmd_out); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2069 | gig_dbg(DEBUG_INIT, "%s: command output URB unlinked", |
| 2070 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2071 | usb_free_urb(ucs->urb_cmd_out); |
| 2072 | ucs->urb_cmd_out = NULL; |
| 2073 | } |
| 2074 | if (ucs->urb_cmd_in) { |
| 2075 | usb_kill_urb(ucs->urb_cmd_in); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2076 | gig_dbg(DEBUG_INIT, "%s: command input URB unlinked", |
| 2077 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2078 | usb_free_urb(ucs->urb_cmd_in); |
| 2079 | ucs->urb_cmd_in = NULL; |
| 2080 | } |
| 2081 | if (ucs->urb_ctrl) { |
| 2082 | usb_kill_urb(ucs->urb_ctrl); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2083 | gig_dbg(DEBUG_INIT, "%s: control output URB unlinked", |
| 2084 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2085 | usb_free_urb(ucs->urb_ctrl); |
| 2086 | ucs->urb_ctrl = NULL; |
| 2087 | } |
| 2088 | } |
| 2089 | |
| 2090 | /* gigaset_probe |
| 2091 | * This function is called when a new USB device is connected. |
| 2092 | * It checks whether the new device is handled by this driver. |
| 2093 | */ |
| 2094 | static int gigaset_probe(struct usb_interface *interface, |
| 2095 | const struct usb_device_id *id) |
| 2096 | { |
| 2097 | struct usb_host_interface *hostif; |
| 2098 | struct usb_device *udev = interface_to_usbdev(interface); |
| 2099 | struct cardstate *cs = NULL; |
| 2100 | struct bas_cardstate *ucs = NULL; |
| 2101 | struct bas_bc_state *ubc; |
| 2102 | struct usb_endpoint_descriptor *endpoint; |
| 2103 | int i, j; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2104 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2105 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2106 | gig_dbg(DEBUG_ANY, |
| 2107 | "%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)", |
| 2108 | __func__, le16_to_cpu(udev->descriptor.idVendor), |
| 2109 | le16_to_cpu(udev->descriptor.idProduct)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2110 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2111 | /* set required alternate setting */ |
| 2112 | hostif = interface->cur_altsetting; |
| 2113 | if (hostif->desc.bAlternateSetting != 3) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2114 | gig_dbg(DEBUG_ANY, |
| 2115 | "%s: wrong alternate setting %d - trying to switch", |
| 2116 | __func__, hostif->desc.bAlternateSetting); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2117 | if (usb_set_interface(udev, hostif->desc.bInterfaceNumber, 3) < 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2118 | dev_warn(&udev->dev, "usb_set_interface failed, " |
| 2119 | "device %d interface %d altsetting %d\n", |
| 2120 | udev->devnum, hostif->desc.bInterfaceNumber, |
| 2121 | hostif->desc.bAlternateSetting); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2122 | return -ENODEV; |
| 2123 | } |
| 2124 | hostif = interface->cur_altsetting; |
| 2125 | } |
| 2126 | |
| 2127 | /* Reject application specific interfaces |
| 2128 | */ |
| 2129 | if (hostif->desc.bInterfaceClass != 255) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2130 | dev_warn(&udev->dev, "%s: bInterfaceClass == %d\n", |
| 2131 | __func__, hostif->desc.bInterfaceClass); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2132 | return -ENODEV; |
| 2133 | } |
| 2134 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2135 | dev_info(&udev->dev, |
| 2136 | "%s: Device matched (Vendor: 0x%x, Product: 0x%x)\n", |
| 2137 | __func__, le16_to_cpu(udev->descriptor.idVendor), |
| 2138 | le16_to_cpu(udev->descriptor.idProduct)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2139 | |
| 2140 | cs = gigaset_getunassignedcs(driver); |
| 2141 | if (!cs) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2142 | dev_err(&udev->dev, "no free cardstate\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2143 | return -ENODEV; |
| 2144 | } |
| 2145 | ucs = cs->hw.bas; |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2146 | |
| 2147 | /* save off device structure ptrs for later use */ |
| 2148 | usb_get_dev(udev); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2149 | ucs->udev = udev; |
| 2150 | ucs->interface = interface; |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2151 | cs->dev = &interface->dev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2152 | |
| 2153 | /* allocate URBs: |
| 2154 | * - one for the interrupt pipe |
| 2155 | * - three for the different uses of the default control pipe |
| 2156 | * - three for each isochronous pipe |
| 2157 | */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2158 | if (!(ucs->urb_int_in = usb_alloc_urb(0, SLAB_KERNEL)) || |
| 2159 | !(ucs->urb_cmd_in = usb_alloc_urb(0, SLAB_KERNEL)) || |
| 2160 | !(ucs->urb_cmd_out = usb_alloc_urb(0, SLAB_KERNEL)) || |
| 2161 | !(ucs->urb_ctrl = usb_alloc_urb(0, SLAB_KERNEL))) |
| 2162 | goto allocerr; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2163 | |
| 2164 | for (j = 0; j < 2; ++j) { |
| 2165 | ubc = cs->bcs[j].hw.bas; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2166 | for (i = 0; i < BAS_OUTURBS; ++i) |
| 2167 | if (!(ubc->isoouturbs[i].urb = |
| 2168 | usb_alloc_urb(BAS_NUMFRAMES, SLAB_KERNEL))) |
| 2169 | goto allocerr; |
| 2170 | for (i = 0; i < BAS_INURBS; ++i) |
| 2171 | if (!(ubc->isoinurbs[i] = |
| 2172 | usb_alloc_urb(BAS_NUMFRAMES, SLAB_KERNEL))) |
| 2173 | goto allocerr; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2174 | } |
| 2175 | |
| 2176 | ucs->rcvbuf = NULL; |
| 2177 | ucs->rcvbuf_size = 0; |
| 2178 | |
| 2179 | /* Fill the interrupt urb and send it to the core */ |
| 2180 | endpoint = &hostif->endpoint[0].desc; |
| 2181 | usb_fill_int_urb(ucs->urb_int_in, udev, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2182 | usb_rcvintpipe(udev, |
| 2183 | (endpoint->bEndpointAddress) & 0x0f), |
| 2184 | ucs->int_in_buf, 3, read_int_callback, cs, |
| 2185 | endpoint->bInterval); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2186 | if ((rc = usb_submit_urb(ucs->urb_int_in, SLAB_KERNEL)) != 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2187 | dev_err(cs->dev, "could not submit interrupt URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2188 | get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2189 | goto error; |
| 2190 | } |
| 2191 | |
| 2192 | /* tell the device that the driver is ready */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2193 | if ((rc = req_submit(cs->bcs, HD_DEVICE_INIT_ACK, 0, 0)) != 0) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2194 | goto error; |
| 2195 | |
| 2196 | /* tell common part that the device is ready */ |
| 2197 | if (startmode == SM_LOCKED) |
| 2198 | atomic_set(&cs->mstate, MS_LOCKED); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2199 | |
| 2200 | /* save address of controller structure */ |
| 2201 | usb_set_intfdata(interface, cs); |
| 2202 | |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2203 | if (!gigaset_start(cs)) |
| 2204 | goto error; |
| 2205 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2206 | return 0; |
| 2207 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2208 | allocerr: |
| 2209 | dev_err(cs->dev, "could not allocate URBs\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2210 | error: |
| 2211 | freeurbs(cs); |
Tilman Schmidt | 69049cc | 2006-04-10 22:55:16 -0700 | [diff] [blame] | 2212 | usb_set_intfdata(interface, NULL); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2213 | gigaset_unassign(cs); |
| 2214 | return -ENODEV; |
| 2215 | } |
| 2216 | |
| 2217 | /* gigaset_disconnect |
| 2218 | * This function is called when the Gigaset base is unplugged. |
| 2219 | */ |
| 2220 | static void gigaset_disconnect(struct usb_interface *interface) |
| 2221 | { |
| 2222 | struct cardstate *cs; |
| 2223 | struct bas_cardstate *ucs; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2224 | int j; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2225 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2226 | cs = usb_get_intfdata(interface); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2227 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2228 | ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2229 | |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2230 | dev_info(cs->dev, "disconnecting Gigaset base\n"); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2231 | |
| 2232 | /* mark base as not ready, all channels disconnected */ |
| 2233 | atomic_set(&ucs->basstate, 0); |
| 2234 | |
| 2235 | /* tell LL all channels are down */ |
| 2236 | //FIXME shouldn't gigaset_stop() do this? |
| 2237 | for (j = 0; j < 2; ++j) |
| 2238 | gigaset_bchannel_down(cs->bcs + j); |
| 2239 | |
| 2240 | /* stop driver (common part) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2241 | gigaset_stop(cs); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2242 | |
| 2243 | /* stop timers and URBs, free ressources */ |
| 2244 | del_timer_sync(&ucs->timer_ctrl); |
| 2245 | del_timer_sync(&ucs->timer_atrdy); |
| 2246 | del_timer_sync(&ucs->timer_cmd_in); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2247 | freeurbs(cs); |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2248 | usb_set_intfdata(interface, NULL); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2249 | kfree(ucs->rcvbuf); |
| 2250 | ucs->rcvbuf = NULL; |
| 2251 | ucs->rcvbuf_size = 0; |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2252 | usb_put_dev(ucs->udev); |
| 2253 | ucs->interface = NULL; |
| 2254 | ucs->udev = NULL; |
| 2255 | cs->dev = NULL; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2256 | gigaset_unassign(cs); |
| 2257 | } |
| 2258 | |
| 2259 | static struct gigaset_ops gigops = { |
| 2260 | gigaset_write_cmd, |
| 2261 | gigaset_write_room, |
| 2262 | gigaset_chars_in_buffer, |
| 2263 | gigaset_brkchars, |
| 2264 | gigaset_init_bchannel, |
| 2265 | gigaset_close_bchannel, |
| 2266 | gigaset_initbcshw, |
| 2267 | gigaset_freebcshw, |
| 2268 | gigaset_reinitbcshw, |
| 2269 | gigaset_initcshw, |
| 2270 | gigaset_freecshw, |
| 2271 | gigaset_set_modem_ctrl, |
| 2272 | gigaset_baud_rate, |
| 2273 | gigaset_set_line_ctrl, |
| 2274 | gigaset_isoc_send_skb, |
| 2275 | gigaset_isoc_input, |
| 2276 | }; |
| 2277 | |
| 2278 | /* bas_gigaset_init |
| 2279 | * This function is called after the kernel module is loaded. |
| 2280 | */ |
| 2281 | static int __init bas_gigaset_init(void) |
| 2282 | { |
| 2283 | int result; |
| 2284 | |
| 2285 | /* allocate memory for our driver state and intialize it */ |
| 2286 | if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2287 | GIGASET_MODULENAME, GIGASET_DEVNAME, |
| 2288 | GIGASET_DEVFSNAME, &gigops, |
| 2289 | THIS_MODULE)) == NULL) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2290 | goto error; |
| 2291 | |
| 2292 | /* allocate memory for our device state and intialize it */ |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 2293 | cardstate = gigaset_initcs(driver, 2, 0, 0, cidmode, |
| 2294 | GIGASET_MODULENAME); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2295 | if (!cardstate) |
| 2296 | goto error; |
| 2297 | |
| 2298 | /* register this driver with the USB subsystem */ |
| 2299 | result = usb_register(&gigaset_usb_driver); |
| 2300 | if (result < 0) { |
| 2301 | err("usb_register failed (error %d)", -result); |
| 2302 | goto error; |
| 2303 | } |
| 2304 | |
| 2305 | info(DRIVER_AUTHOR); |
| 2306 | info(DRIVER_DESC); |
| 2307 | return 0; |
| 2308 | |
| 2309 | error: if (cardstate) |
| 2310 | gigaset_freecs(cardstate); |
| 2311 | cardstate = NULL; |
| 2312 | if (driver) |
| 2313 | gigaset_freedriver(driver); |
| 2314 | driver = NULL; |
| 2315 | return -1; |
| 2316 | } |
| 2317 | |
| 2318 | /* bas_gigaset_exit |
| 2319 | * This function is called before the kernel module is unloaded. |
| 2320 | */ |
| 2321 | static void __exit bas_gigaset_exit(void) |
| 2322 | { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2323 | struct bas_cardstate *ucs = cardstate->hw.bas; |
| 2324 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2325 | gigaset_blockdriver(driver); /* => probe will fail |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2326 | * => no gigaset_start any more |
| 2327 | */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2328 | |
| 2329 | gigaset_shutdown(cardstate); |
| 2330 | /* from now on, no isdn callback should be possible */ |
| 2331 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2332 | /* close all still open channels */ |
| 2333 | if (atomic_read(&ucs->basstate) & BS_B1OPEN) { |
| 2334 | gig_dbg(DEBUG_INIT, "closing B1 channel"); |
| 2335 | usb_control_msg(ucs->udev, usb_sndctrlpipe(ucs->udev, 0), |
| 2336 | HD_CLOSE_B1CHANNEL, OUT_VENDOR_REQ, 0, 0, |
| 2337 | NULL, 0, BAS_TIMEOUT); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2338 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame^] | 2339 | if (atomic_read(&ucs->basstate) & BS_B2OPEN) { |
| 2340 | gig_dbg(DEBUG_INIT, "closing B2 channel"); |
| 2341 | usb_control_msg(ucs->udev, usb_sndctrlpipe(ucs->udev, 0), |
| 2342 | HD_CLOSE_B2CHANNEL, OUT_VENDOR_REQ, 0, 0, |
| 2343 | NULL, 0, BAS_TIMEOUT); |
| 2344 | } |
| 2345 | if (atomic_read(&ucs->basstate) & BS_ATOPEN) { |
| 2346 | gig_dbg(DEBUG_INIT, "closing AT channel"); |
| 2347 | usb_control_msg(ucs->udev, usb_sndctrlpipe(ucs->udev, 0), |
| 2348 | HD_CLOSE_ATCHANNEL, OUT_VENDOR_REQ, 0, 0, |
| 2349 | NULL, 0, BAS_TIMEOUT); |
| 2350 | } |
| 2351 | atomic_set(&ucs->basstate, 0); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2352 | |
| 2353 | /* deregister this driver with the USB subsystem */ |
| 2354 | usb_deregister(&gigaset_usb_driver); |
| 2355 | /* this will call the disconnect-callback */ |
| 2356 | /* from now on, no disconnect/probe callback should be running */ |
| 2357 | |
| 2358 | gigaset_freecs(cardstate); |
| 2359 | cardstate = NULL; |
| 2360 | gigaset_freedriver(driver); |
| 2361 | driver = NULL; |
| 2362 | } |
| 2363 | |
| 2364 | |
| 2365 | module_init(bas_gigaset_init); |
| 2366 | module_exit(bas_gigaset_exit); |
| 2367 | |
| 2368 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 2369 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 2370 | MODULE_LICENSE("GPL"); |