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 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 68 | /*======================= local function prototypes ==========================*/ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 69 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 70 | /* function called if a new device belonging to this driver is connected */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 71 | static int gigaset_probe(struct usb_interface *interface, |
| 72 | const struct usb_device_id *id); |
| 73 | |
| 74 | /* Function will be called if the device is unplugged */ |
| 75 | static void gigaset_disconnect(struct usb_interface *interface); |
| 76 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 77 | static int atread_submit(struct cardstate *, int); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 78 | static void stopurbs(struct bas_bc_state *); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 79 | static int req_submit(struct bc_state *, int, int, int); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 80 | static int atwrite_submit(struct cardstate *, unsigned char *, int); |
| 81 | static int start_cbsend(struct cardstate *); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 82 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 83 | /*============================================================================*/ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 84 | |
| 85 | struct bas_cardstate { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 86 | struct usb_device *udev; /* USB device pointer */ |
| 87 | struct usb_interface *interface; /* interface for this device */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 88 | unsigned char minor; /* starting minor number */ |
| 89 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 90 | struct urb *urb_ctrl; /* control pipe default URB */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 91 | struct usb_ctrlrequest dr_ctrl; |
| 92 | struct timer_list timer_ctrl; /* control request timeout */ |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 93 | int retry_ctrl; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 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. |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 310 | * cs->lock must not be held. |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 311 | * argument: |
| 312 | * B channel control structure |
| 313 | */ |
| 314 | static inline void error_hangup(struct bc_state *bcs) |
| 315 | { |
| 316 | struct cardstate *cs = bcs->cs; |
| 317 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 318 | gig_dbg(DEBUG_ANY, "%s: scheduling HUP for channel %d", |
| 319 | __func__, bcs->channel); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 320 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 321 | if (!gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL)) |
| 322 | dev_err(cs->dev, "event queue full\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 323 | |
| 324 | gigaset_schedule_event(cs); |
| 325 | } |
| 326 | |
| 327 | /* error_reset |
| 328 | * reset Gigaset device because of an unrecoverable error |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 329 | * This function may be called from any context, and takes care of |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 330 | * scheduling the necessary actions for execution outside of interrupt context. |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 331 | * cs->lock must not be held. |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 332 | * argument: |
| 333 | * controller state structure |
| 334 | */ |
| 335 | static inline void error_reset(struct cardstate *cs) |
| 336 | { |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 337 | /* close AT command channel to recover (ignore errors) */ |
| 338 | req_submit(cs->bcs, HD_CLOSE_ATCHANNEL, 0, BAS_TIMEOUT); |
| 339 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 340 | //FIXME try to recover without bothering the user |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 341 | dev_err(cs->dev, |
| 342 | "unrecoverable error - please disconnect Gigaset base to reset\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | /* check_pending |
| 346 | * check for completion of pending control request |
| 347 | * parameter: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 348 | * ucs hardware specific controller state structure |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 349 | */ |
| 350 | static void check_pending(struct bas_cardstate *ucs) |
| 351 | { |
| 352 | unsigned long flags; |
| 353 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 354 | spin_lock_irqsave(&ucs->lock, flags); |
| 355 | switch (ucs->pending) { |
| 356 | case 0: |
| 357 | break; |
| 358 | case HD_OPEN_ATCHANNEL: |
| 359 | if (atomic_read(&ucs->basstate) & BS_ATOPEN) |
| 360 | ucs->pending = 0; |
| 361 | break; |
| 362 | case HD_OPEN_B1CHANNEL: |
| 363 | if (atomic_read(&ucs->basstate) & BS_B1OPEN) |
| 364 | ucs->pending = 0; |
| 365 | break; |
| 366 | case HD_OPEN_B2CHANNEL: |
| 367 | if (atomic_read(&ucs->basstate) & BS_B2OPEN) |
| 368 | ucs->pending = 0; |
| 369 | break; |
| 370 | case HD_CLOSE_ATCHANNEL: |
| 371 | if (!(atomic_read(&ucs->basstate) & BS_ATOPEN)) |
| 372 | ucs->pending = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 373 | break; |
| 374 | case HD_CLOSE_B1CHANNEL: |
| 375 | if (!(atomic_read(&ucs->basstate) & BS_B1OPEN)) |
| 376 | ucs->pending = 0; |
| 377 | break; |
| 378 | case HD_CLOSE_B2CHANNEL: |
| 379 | if (!(atomic_read(&ucs->basstate) & BS_B2OPEN)) |
| 380 | ucs->pending = 0; |
| 381 | break; |
| 382 | case HD_DEVICE_INIT_ACK: /* no reply expected */ |
| 383 | ucs->pending = 0; |
| 384 | break; |
| 385 | /* HD_READ_ATMESSAGE, HD_WRITE_ATMESSAGE, HD_RESET_INTERRUPTPIPE |
| 386 | * are handled separately and should never end up here |
| 387 | */ |
| 388 | default: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 389 | dev_warn(&ucs->interface->dev, |
| 390 | "unknown pending request 0x%02x cleared\n", |
| 391 | ucs->pending); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 392 | ucs->pending = 0; |
| 393 | } |
| 394 | |
| 395 | if (!ucs->pending) |
| 396 | del_timer(&ucs->timer_ctrl); |
| 397 | |
| 398 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 399 | } |
| 400 | |
| 401 | /* cmd_in_timeout |
| 402 | * timeout routine for command input request |
| 403 | * argument: |
| 404 | * controller state structure |
| 405 | */ |
| 406 | static void cmd_in_timeout(unsigned long data) |
| 407 | { |
| 408 | struct cardstate *cs = (struct cardstate *) data; |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 409 | struct bas_cardstate *ucs = cs->hw.bas; |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 410 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 411 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 412 | if (!ucs->rcvbuf_size) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 413 | gig_dbg(DEBUG_USBREQ, "%s: no receive in progress", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 414 | return; |
| 415 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 416 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 417 | if (ucs->retry_cmd_in++ < BAS_RETRY) { |
| 418 | dev_notice(cs->dev, "control read: timeout, retry %d\n", |
| 419 | ucs->retry_cmd_in); |
| 420 | rc = atread_submit(cs, BAS_TIMEOUT); |
| 421 | if (rc >= 0 || rc == -ENODEV) |
| 422 | /* resubmitted or disconnected */ |
| 423 | /* - bypass regular exit block */ |
| 424 | return; |
| 425 | } else { |
| 426 | dev_err(cs->dev, |
| 427 | "control read: timeout, giving up after %d tries\n", |
| 428 | ucs->retry_cmd_in); |
| 429 | } |
| 430 | kfree(ucs->rcvbuf); |
| 431 | ucs->rcvbuf = NULL; |
| 432 | ucs->rcvbuf_size = 0; |
| 433 | error_reset(cs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 434 | } |
| 435 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 436 | /* set/clear bits in base connection state, return previous state |
| 437 | */ |
| 438 | inline static int update_basstate(struct bas_cardstate *ucs, |
| 439 | int set, int clear) |
| 440 | { |
| 441 | unsigned long flags; |
| 442 | int state; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 443 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 444 | spin_lock_irqsave(&ucs->lock, flags); |
| 445 | state = atomic_read(&ucs->basstate); |
| 446 | atomic_set(&ucs->basstate, (state & ~clear) | set); |
| 447 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 448 | return state; |
| 449 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 450 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 451 | /* read_ctrl_callback |
| 452 | * USB completion handler for control pipe input |
| 453 | * called by the USB subsystem in interrupt context |
| 454 | * parameter: |
| 455 | * urb USB request block |
| 456 | * urb->context = inbuf structure for controller state |
| 457 | */ |
| 458 | static void read_ctrl_callback(struct urb *urb, struct pt_regs *regs) |
| 459 | { |
| 460 | struct inbuf_t *inbuf = urb->context; |
| 461 | struct cardstate *cs = inbuf->cs; |
| 462 | struct bas_cardstate *ucs = cs->hw.bas; |
| 463 | int have_data = 0; |
| 464 | unsigned numbytes; |
| 465 | int rc; |
| 466 | |
| 467 | update_basstate(ucs, 0, BS_ATRDPEND); |
| 468 | |
| 469 | if (!ucs->rcvbuf_size) { |
| 470 | dev_warn(cs->dev, "%s: no receive in progress\n", __func__); |
| 471 | return; |
| 472 | } |
| 473 | |
| 474 | del_timer(&ucs->timer_cmd_in); |
| 475 | |
| 476 | switch (urb->status) { |
| 477 | case 0: /* normal completion */ |
| 478 | numbytes = urb->actual_length; |
| 479 | if (unlikely(numbytes != ucs->rcvbuf_size)) { |
| 480 | dev_warn(cs->dev, |
| 481 | "control read: received %d chars, expected %d\n", |
| 482 | numbytes, ucs->rcvbuf_size); |
| 483 | if (numbytes > ucs->rcvbuf_size) |
| 484 | numbytes = ucs->rcvbuf_size; |
| 485 | } |
| 486 | |
| 487 | /* copy received bytes to inbuf */ |
| 488 | have_data = gigaset_fill_inbuf(inbuf, ucs->rcvbuf, numbytes); |
| 489 | |
| 490 | if (unlikely(numbytes < ucs->rcvbuf_size)) { |
| 491 | /* incomplete - resubmit for remaining bytes */ |
| 492 | ucs->rcvbuf_size -= numbytes; |
| 493 | ucs->retry_cmd_in = 0; |
| 494 | rc = atread_submit(cs, BAS_TIMEOUT); |
| 495 | if (rc >= 0 || rc == -ENODEV) |
| 496 | /* resubmitted or disconnected */ |
| 497 | /* - bypass regular exit block */ |
| 498 | return; |
| 499 | error_reset(cs); |
| 500 | } |
| 501 | break; |
| 502 | |
| 503 | case -ENOENT: /* cancelled */ |
| 504 | case -ECONNRESET: /* cancelled (async) */ |
| 505 | case -EINPROGRESS: /* pending */ |
| 506 | case -ENODEV: /* device removed */ |
| 507 | case -ESHUTDOWN: /* device shut down */ |
| 508 | /* no action necessary */ |
| 509 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
| 510 | __func__, get_usb_statmsg(urb->status)); |
| 511 | break; |
| 512 | |
| 513 | default: /* severe trouble */ |
| 514 | dev_warn(cs->dev, "control read: %s\n", |
| 515 | get_usb_statmsg(urb->status)); |
| 516 | if (ucs->retry_cmd_in++ < BAS_RETRY) { |
| 517 | dev_notice(cs->dev, "control read: retry %d\n", |
| 518 | ucs->retry_cmd_in); |
| 519 | rc = atread_submit(cs, BAS_TIMEOUT); |
| 520 | if (rc >= 0 || rc == -ENODEV) |
| 521 | /* resubmitted or disconnected */ |
| 522 | /* - bypass regular exit block */ |
| 523 | return; |
| 524 | } else { |
| 525 | dev_err(cs->dev, |
| 526 | "control read: giving up after %d tries\n", |
| 527 | ucs->retry_cmd_in); |
| 528 | } |
| 529 | error_reset(cs); |
| 530 | } |
| 531 | |
| 532 | kfree(ucs->rcvbuf); |
| 533 | ucs->rcvbuf = NULL; |
| 534 | ucs->rcvbuf_size = 0; |
| 535 | if (have_data) { |
| 536 | gig_dbg(DEBUG_INTR, "%s-->BH", __func__); |
| 537 | gigaset_schedule_event(cs); |
| 538 | } |
| 539 | } |
| 540 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 541 | /* atread_submit |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 542 | * submit an HD_READ_ATMESSAGE command URB and optionally start a timeout |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 543 | * parameters: |
| 544 | * cs controller state structure |
| 545 | * timeout timeout in 1/10 sec., 0: none |
| 546 | * return value: |
| 547 | * 0 on success |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 548 | * -EBUSY if another request is pending |
| 549 | * any URB submission error code |
| 550 | */ |
| 551 | static int atread_submit(struct cardstate *cs, int timeout) |
| 552 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 553 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 554 | int ret; |
| 555 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 556 | gig_dbg(DEBUG_USBREQ, "-------> HD_READ_ATMESSAGE (%d)", |
| 557 | ucs->rcvbuf_size); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 558 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 559 | if (update_basstate(ucs, BS_ATRDPEND, 0) & BS_ATRDPEND) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 560 | dev_err(cs->dev, |
| 561 | "could not submit HD_READ_ATMESSAGE: URB busy\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 562 | return -EBUSY; |
| 563 | } |
| 564 | |
| 565 | ucs->dr_cmd_in.bRequestType = IN_VENDOR_REQ; |
| 566 | ucs->dr_cmd_in.bRequest = HD_READ_ATMESSAGE; |
| 567 | ucs->dr_cmd_in.wValue = 0; |
| 568 | ucs->dr_cmd_in.wIndex = 0; |
| 569 | ucs->dr_cmd_in.wLength = cpu_to_le16(ucs->rcvbuf_size); |
| 570 | usb_fill_control_urb(ucs->urb_cmd_in, ucs->udev, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 571 | usb_rcvctrlpipe(ucs->udev, 0), |
| 572 | (unsigned char*) & ucs->dr_cmd_in, |
| 573 | ucs->rcvbuf, ucs->rcvbuf_size, |
| 574 | read_ctrl_callback, cs->inbuf); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 575 | |
| 576 | if ((ret = usb_submit_urb(ucs->urb_cmd_in, SLAB_ATOMIC)) != 0) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 577 | update_basstate(ucs, 0, BS_ATRDPEND); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 578 | dev_err(cs->dev, "could not submit HD_READ_ATMESSAGE: %s\n", |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 579 | get_usb_rcmsg(ret)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 580 | return ret; |
| 581 | } |
| 582 | |
| 583 | if (timeout > 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 584 | gig_dbg(DEBUG_USBREQ, "setting timeout of %d/10 secs", timeout); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 585 | ucs->timer_cmd_in.expires = jiffies + timeout * HZ / 10; |
| 586 | ucs->timer_cmd_in.data = (unsigned long) cs; |
| 587 | ucs->timer_cmd_in.function = cmd_in_timeout; |
| 588 | add_timer(&ucs->timer_cmd_in); |
| 589 | } |
| 590 | return 0; |
| 591 | } |
| 592 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 593 | /* read_int_callback |
| 594 | * USB completion handler for interrupt pipe input |
| 595 | * called by the USB subsystem in interrupt context |
| 596 | * parameter: |
| 597 | * urb USB request block |
| 598 | * urb->context = controller state structure |
| 599 | */ |
| 600 | static void read_int_callback(struct urb *urb, struct pt_regs *regs) |
| 601 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 602 | struct cardstate *cs = urb->context; |
| 603 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 604 | struct bc_state *bcs; |
| 605 | unsigned long flags; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 606 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 607 | unsigned l; |
| 608 | int channel; |
| 609 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 610 | switch (urb->status) { |
| 611 | case 0: /* success */ |
| 612 | break; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 613 | case -ENOENT: /* cancelled */ |
| 614 | case -ECONNRESET: /* cancelled (async) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 615 | case -EINPROGRESS: /* pending */ |
| 616 | /* ignore silently */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 617 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
| 618 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 619 | return; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 620 | case -ENODEV: /* device removed */ |
| 621 | case -ESHUTDOWN: /* device shut down */ |
| 622 | //FIXME use this as disconnect indicator? |
| 623 | gig_dbg(DEBUG_USBREQ, "%s: device disconnected", __func__); |
| 624 | return; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 625 | default: /* severe trouble */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 626 | dev_warn(cs->dev, "interrupt read: %s\n", |
| 627 | get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 628 | //FIXME corrective action? resubmission always ok? |
| 629 | goto resubmit; |
| 630 | } |
| 631 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 632 | /* drop incomplete packets even if the missing bytes wouldn't matter */ |
| 633 | if (unlikely(urb->actual_length < 3)) { |
| 634 | dev_warn(cs->dev, "incomplete interrupt packet (%d bytes)\n", |
| 635 | urb->actual_length); |
| 636 | goto resubmit; |
| 637 | } |
| 638 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 639 | l = (unsigned) ucs->int_in_buf[1] + |
| 640 | (((unsigned) ucs->int_in_buf[2]) << 8); |
| 641 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 642 | gig_dbg(DEBUG_USBREQ, "<-------%d: 0x%02x (%u [0x%02x 0x%02x])", |
| 643 | urb->actual_length, (int)ucs->int_in_buf[0], l, |
| 644 | (int)ucs->int_in_buf[1], (int)ucs->int_in_buf[2]); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 645 | |
| 646 | channel = 0; |
| 647 | |
| 648 | switch (ucs->int_in_buf[0]) { |
| 649 | case HD_DEVICE_INIT_OK: |
| 650 | update_basstate(ucs, BS_INIT, 0); |
| 651 | break; |
| 652 | |
| 653 | case HD_READY_SEND_ATDATA: |
| 654 | del_timer(&ucs->timer_atrdy); |
| 655 | update_basstate(ucs, BS_ATREADY, BS_ATTIMER); |
| 656 | start_cbsend(cs); |
| 657 | break; |
| 658 | |
| 659 | case HD_OPEN_B2CHANNEL_ACK: |
| 660 | ++channel; |
| 661 | case HD_OPEN_B1CHANNEL_ACK: |
| 662 | bcs = cs->bcs + channel; |
| 663 | update_basstate(ucs, BS_B1OPEN << channel, 0); |
| 664 | gigaset_bchannel_up(bcs); |
| 665 | break; |
| 666 | |
| 667 | case HD_OPEN_ATCHANNEL_ACK: |
| 668 | update_basstate(ucs, BS_ATOPEN, 0); |
| 669 | start_cbsend(cs); |
| 670 | break; |
| 671 | |
| 672 | case HD_CLOSE_B2CHANNEL_ACK: |
| 673 | ++channel; |
| 674 | case HD_CLOSE_B1CHANNEL_ACK: |
| 675 | bcs = cs->bcs + channel; |
| 676 | update_basstate(ucs, 0, BS_B1OPEN << channel); |
| 677 | stopurbs(bcs->hw.bas); |
| 678 | gigaset_bchannel_down(bcs); |
| 679 | break; |
| 680 | |
| 681 | case HD_CLOSE_ATCHANNEL_ACK: |
| 682 | update_basstate(ucs, 0, BS_ATOPEN); |
| 683 | break; |
| 684 | |
| 685 | case HD_B2_FLOW_CONTROL: |
| 686 | ++channel; |
| 687 | case HD_B1_FLOW_CONTROL: |
| 688 | bcs = cs->bcs + channel; |
| 689 | atomic_add((l - BAS_NORMFRAME) * BAS_CORRFRAMES, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 690 | &bcs->hw.bas->corrbytes); |
| 691 | gig_dbg(DEBUG_ISO, |
| 692 | "Flow control (channel %d, sub %d): 0x%02x => %d", |
| 693 | channel, bcs->hw.bas->numsub, l, |
| 694 | atomic_read(&bcs->hw.bas->corrbytes)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 695 | break; |
| 696 | |
| 697 | case HD_RECEIVEATDATA_ACK: /* AT response ready to be received */ |
| 698 | if (!l) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 699 | dev_warn(cs->dev, |
| 700 | "HD_RECEIVEATDATA_ACK with length 0 ignored\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 701 | break; |
| 702 | } |
| 703 | spin_lock_irqsave(&cs->lock, flags); |
| 704 | if (ucs->rcvbuf_size) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 705 | /* throw away previous buffer - we have no queue */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 706 | dev_err(cs->dev, |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 707 | "receive AT data overrun, %d bytes lost\n", |
| 708 | ucs->rcvbuf_size); |
| 709 | kfree(ucs->rcvbuf); |
| 710 | ucs->rcvbuf_size = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 711 | } |
| 712 | if ((ucs->rcvbuf = kmalloc(l, GFP_ATOMIC)) == NULL) { |
| 713 | spin_unlock_irqrestore(&cs->lock, flags); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 714 | dev_err(cs->dev, "out of memory receiving AT data\n"); |
| 715 | error_reset(cs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 716 | break; |
| 717 | } |
| 718 | ucs->rcvbuf_size = l; |
| 719 | ucs->retry_cmd_in = 0; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 720 | if ((rc = atread_submit(cs, BAS_TIMEOUT)) < 0) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 721 | kfree(ucs->rcvbuf); |
| 722 | ucs->rcvbuf = NULL; |
| 723 | ucs->rcvbuf_size = 0; |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 724 | if (rc != -ENODEV) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 725 | //FIXME corrective action? |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 726 | spin_unlock_irqrestore(&cs->lock, flags); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 727 | error_reset(cs); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 728 | break; |
| 729 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 730 | } |
| 731 | spin_unlock_irqrestore(&cs->lock, flags); |
| 732 | break; |
| 733 | |
| 734 | case HD_RESET_INTERRUPT_PIPE_ACK: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 735 | gig_dbg(DEBUG_USBREQ, "HD_RESET_INTERRUPT_PIPE_ACK"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 736 | break; |
| 737 | |
| 738 | case HD_SUSPEND_END: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 739 | gig_dbg(DEBUG_USBREQ, "HD_SUSPEND_END"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 740 | break; |
| 741 | |
| 742 | default: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 743 | dev_warn(cs->dev, |
| 744 | "unknown Gigaset signal 0x%02x (%u) ignored\n", |
| 745 | (int) ucs->int_in_buf[0], l); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 746 | } |
| 747 | |
| 748 | check_pending(ucs); |
| 749 | |
| 750 | resubmit: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 751 | rc = usb_submit_urb(urb, SLAB_ATOMIC); |
| 752 | if (unlikely(rc != 0 && rc != -ENODEV)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 753 | dev_err(cs->dev, "could not resubmit interrupt URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 754 | get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 755 | error_reset(cs); |
| 756 | } |
| 757 | } |
| 758 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 759 | /* read_iso_callback |
| 760 | * USB completion handler for B channel isochronous input |
| 761 | * called by the USB subsystem in interrupt context |
| 762 | * parameter: |
| 763 | * urb USB request block of completed request |
| 764 | * urb->context = bc_state structure |
| 765 | */ |
| 766 | static void read_iso_callback(struct urb *urb, struct pt_regs *regs) |
| 767 | { |
| 768 | struct bc_state *bcs; |
| 769 | struct bas_bc_state *ubc; |
| 770 | unsigned long flags; |
| 771 | int i, rc; |
| 772 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 773 | /* status codes not worth bothering the tasklet with */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 774 | if (unlikely(urb->status == -ENOENT || |
| 775 | urb->status == -ECONNRESET || |
| 776 | urb->status == -EINPROGRESS || |
| 777 | urb->status == -ENODEV || |
| 778 | urb->status == -ESHUTDOWN)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 779 | gig_dbg(DEBUG_ISO, "%s: %s", |
| 780 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 781 | return; |
| 782 | } |
| 783 | |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 784 | bcs = urb->context; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 785 | ubc = bcs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 786 | |
| 787 | spin_lock_irqsave(&ubc->isoinlock, flags); |
| 788 | if (likely(ubc->isoindone == NULL)) { |
| 789 | /* pass URB to tasklet */ |
| 790 | ubc->isoindone = urb; |
| 791 | tasklet_schedule(&ubc->rcvd_tasklet); |
| 792 | } else { |
| 793 | /* tasklet still busy, drop data and resubmit URB */ |
| 794 | ubc->loststatus = urb->status; |
| 795 | for (i = 0; i < BAS_NUMFRAMES; i++) { |
| 796 | ubc->isoinlost += urb->iso_frame_desc[i].actual_length; |
| 797 | if (unlikely(urb->iso_frame_desc[i].status != 0 && |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 798 | urb->iso_frame_desc[i].status != |
| 799 | -EINPROGRESS)) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 800 | ubc->loststatus = urb->iso_frame_desc[i].status; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 801 | urb->iso_frame_desc[i].status = 0; |
| 802 | urb->iso_frame_desc[i].actual_length = 0; |
| 803 | } |
| 804 | if (likely(atomic_read(&ubc->running))) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 805 | /* urb->dev is clobbered by USB subsystem */ |
| 806 | urb->dev = bcs->cs->hw.bas->udev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 807 | urb->transfer_flags = URB_ISO_ASAP; |
| 808 | urb->number_of_packets = BAS_NUMFRAMES; |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 809 | gig_dbg(DEBUG_ISO, "%s: isoc read overrun/resubmit", |
| 810 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 811 | rc = usb_submit_urb(urb, SLAB_ATOMIC); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 812 | if (unlikely(rc != 0 && rc != -ENODEV)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 813 | dev_err(bcs->cs->dev, |
| 814 | "could not resubmit isochronous read " |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 815 | "URB: %s\n", get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 816 | dump_urb(DEBUG_ISO, "isoc read", urb); |
| 817 | error_hangup(bcs); |
| 818 | } |
| 819 | } |
| 820 | } |
| 821 | spin_unlock_irqrestore(&ubc->isoinlock, flags); |
| 822 | } |
| 823 | |
| 824 | /* write_iso_callback |
| 825 | * USB completion handler for B channel isochronous output |
| 826 | * called by the USB subsystem in interrupt context |
| 827 | * parameter: |
| 828 | * urb USB request block of completed request |
| 829 | * urb->context = isow_urbctx_t structure |
| 830 | */ |
| 831 | static void write_iso_callback(struct urb *urb, struct pt_regs *regs) |
| 832 | { |
| 833 | struct isow_urbctx_t *ucx; |
| 834 | struct bas_bc_state *ubc; |
| 835 | unsigned long flags; |
| 836 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 837 | /* status codes not worth bothering the tasklet with */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 838 | if (unlikely(urb->status == -ENOENT || |
| 839 | urb->status == -ECONNRESET || |
| 840 | urb->status == -EINPROGRESS || |
| 841 | urb->status == -ENODEV || |
| 842 | urb->status == -ESHUTDOWN)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 843 | gig_dbg(DEBUG_ISO, "%s: %s", |
| 844 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 845 | return; |
| 846 | } |
| 847 | |
| 848 | /* pass URB context to tasklet */ |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 849 | ucx = urb->context; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 850 | ubc = ucx->bcs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 851 | |
| 852 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 853 | ubc->isooutovfl = ubc->isooutdone; |
| 854 | ubc->isooutdone = ucx; |
| 855 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 856 | tasklet_schedule(&ubc->sent_tasklet); |
| 857 | } |
| 858 | |
| 859 | /* starturbs |
| 860 | * prepare and submit USB request blocks for isochronous input and output |
| 861 | * argument: |
| 862 | * B channel control structure |
| 863 | * return value: |
| 864 | * 0 on success |
| 865 | * < 0 on error (no URBs submitted) |
| 866 | */ |
| 867 | static int starturbs(struct bc_state *bcs) |
| 868 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 869 | struct bas_bc_state *ubc = bcs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 870 | struct urb *urb; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 871 | int j, k; |
| 872 | int rc; |
| 873 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 874 | /* initialize L2 reception */ |
| 875 | if (bcs->proto2 == ISDN_PROTO_L2_HDLC) |
| 876 | bcs->inputstate |= INS_flag_hunt; |
| 877 | |
| 878 | /* submit all isochronous input URBs */ |
| 879 | atomic_set(&ubc->running, 1); |
| 880 | for (k = 0; k < BAS_INURBS; k++) { |
| 881 | urb = ubc->isoinurbs[k]; |
| 882 | if (!urb) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 883 | rc = -EFAULT; |
| 884 | goto error; |
| 885 | } |
| 886 | |
| 887 | urb->dev = bcs->cs->hw.bas->udev; |
| 888 | urb->pipe = usb_rcvisocpipe(urb->dev, 3 + 2 * bcs->channel); |
| 889 | urb->transfer_flags = URB_ISO_ASAP; |
| 890 | urb->transfer_buffer = ubc->isoinbuf + k * BAS_INBUFSIZE; |
| 891 | urb->transfer_buffer_length = BAS_INBUFSIZE; |
| 892 | urb->number_of_packets = BAS_NUMFRAMES; |
| 893 | urb->interval = BAS_FRAMETIME; |
| 894 | urb->complete = read_iso_callback; |
| 895 | urb->context = bcs; |
| 896 | for (j = 0; j < BAS_NUMFRAMES; j++) { |
| 897 | urb->iso_frame_desc[j].offset = j * BAS_MAXFRAME; |
| 898 | urb->iso_frame_desc[j].length = BAS_MAXFRAME; |
| 899 | urb->iso_frame_desc[j].status = 0; |
| 900 | urb->iso_frame_desc[j].actual_length = 0; |
| 901 | } |
| 902 | |
| 903 | dump_urb(DEBUG_ISO, "Initial isoc read", urb); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 904 | if ((rc = usb_submit_urb(urb, SLAB_ATOMIC)) != 0) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 905 | goto error; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 906 | } |
| 907 | |
| 908 | /* initialize L2 transmission */ |
| 909 | gigaset_isowbuf_init(ubc->isooutbuf, PPP_FLAG); |
| 910 | |
| 911 | /* set up isochronous output URBs for flag idling */ |
| 912 | for (k = 0; k < BAS_OUTURBS; ++k) { |
| 913 | urb = ubc->isoouturbs[k].urb; |
| 914 | if (!urb) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 915 | rc = -EFAULT; |
| 916 | goto error; |
| 917 | } |
| 918 | urb->dev = bcs->cs->hw.bas->udev; |
| 919 | urb->pipe = usb_sndisocpipe(urb->dev, 4 + 2 * bcs->channel); |
| 920 | urb->transfer_flags = URB_ISO_ASAP; |
| 921 | urb->transfer_buffer = ubc->isooutbuf->data; |
| 922 | urb->transfer_buffer_length = sizeof(ubc->isooutbuf->data); |
| 923 | urb->number_of_packets = BAS_NUMFRAMES; |
| 924 | urb->interval = BAS_FRAMETIME; |
| 925 | urb->complete = write_iso_callback; |
| 926 | urb->context = &ubc->isoouturbs[k]; |
| 927 | for (j = 0; j < BAS_NUMFRAMES; ++j) { |
| 928 | urb->iso_frame_desc[j].offset = BAS_OUTBUFSIZE; |
| 929 | urb->iso_frame_desc[j].length = BAS_NORMFRAME; |
| 930 | urb->iso_frame_desc[j].status = 0; |
| 931 | urb->iso_frame_desc[j].actual_length = 0; |
| 932 | } |
| 933 | ubc->isoouturbs[k].limit = -1; |
| 934 | } |
| 935 | |
| 936 | /* submit two URBs, keep third one */ |
| 937 | for (k = 0; k < 2; ++k) { |
| 938 | dump_urb(DEBUG_ISO, "Initial isoc write", urb); |
| 939 | rc = usb_submit_urb(ubc->isoouturbs[k].urb, SLAB_ATOMIC); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 940 | if (rc != 0) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 941 | goto error; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 942 | } |
| 943 | dump_urb(DEBUG_ISO, "Initial isoc write (free)", urb); |
| 944 | ubc->isooutfree = &ubc->isoouturbs[2]; |
| 945 | ubc->isooutdone = ubc->isooutovfl = NULL; |
| 946 | return 0; |
| 947 | error: |
| 948 | stopurbs(ubc); |
| 949 | return rc; |
| 950 | } |
| 951 | |
| 952 | /* stopurbs |
| 953 | * cancel the USB request blocks for isochronous input and output |
| 954 | * errors are silently ignored |
| 955 | * argument: |
| 956 | * B channel control structure |
| 957 | */ |
| 958 | static void stopurbs(struct bas_bc_state *ubc) |
| 959 | { |
| 960 | int k, rc; |
| 961 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 962 | atomic_set(&ubc->running, 0); |
| 963 | |
| 964 | for (k = 0; k < BAS_INURBS; ++k) { |
| 965 | rc = usb_unlink_urb(ubc->isoinurbs[k]); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 966 | gig_dbg(DEBUG_ISO, |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 967 | "%s: isoc input URB %d unlinked, result = %s", |
| 968 | __func__, k, get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 969 | } |
| 970 | |
| 971 | for (k = 0; k < BAS_OUTURBS; ++k) { |
| 972 | rc = usb_unlink_urb(ubc->isoouturbs[k].urb); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 973 | gig_dbg(DEBUG_ISO, |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 974 | "%s: isoc output URB %d unlinked, result = %s", |
| 975 | __func__, k, get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 976 | } |
| 977 | } |
| 978 | |
| 979 | /* Isochronous Write - Bottom Half */ |
| 980 | /* =============================== */ |
| 981 | |
| 982 | /* submit_iso_write_urb |
| 983 | * fill and submit the next isochronous write URB |
| 984 | * parameters: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 985 | * ucx context structure containing URB |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 986 | * return value: |
| 987 | * number of frames submitted in URB |
| 988 | * 0 if URB not submitted because no data available (isooutbuf busy) |
| 989 | * error code < 0 on error |
| 990 | */ |
| 991 | static int submit_iso_write_urb(struct isow_urbctx_t *ucx) |
| 992 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 993 | struct urb *urb = ucx->urb; |
| 994 | struct bas_bc_state *ubc = ucx->bcs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 995 | struct usb_iso_packet_descriptor *ifd; |
| 996 | int corrbytes, nframe, rc; |
| 997 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 998 | /* urb->dev is clobbered by USB subsystem */ |
| 999 | urb->dev = ucx->bcs->cs->hw.bas->udev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1000 | urb->transfer_flags = URB_ISO_ASAP; |
| 1001 | urb->transfer_buffer = ubc->isooutbuf->data; |
| 1002 | urb->transfer_buffer_length = sizeof(ubc->isooutbuf->data); |
| 1003 | |
| 1004 | for (nframe = 0; nframe < BAS_NUMFRAMES; nframe++) { |
| 1005 | ifd = &urb->iso_frame_desc[nframe]; |
| 1006 | |
| 1007 | /* compute frame length according to flow control */ |
| 1008 | ifd->length = BAS_NORMFRAME; |
| 1009 | if ((corrbytes = atomic_read(&ubc->corrbytes)) != 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1010 | gig_dbg(DEBUG_ISO, "%s: corrbytes=%d", |
| 1011 | __func__, corrbytes); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1012 | if (corrbytes > BAS_HIGHFRAME - BAS_NORMFRAME) |
| 1013 | corrbytes = BAS_HIGHFRAME - BAS_NORMFRAME; |
| 1014 | else if (corrbytes < BAS_LOWFRAME - BAS_NORMFRAME) |
| 1015 | corrbytes = BAS_LOWFRAME - BAS_NORMFRAME; |
| 1016 | ifd->length += corrbytes; |
| 1017 | atomic_add(-corrbytes, &ubc->corrbytes); |
| 1018 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1019 | |
| 1020 | /* retrieve block of data to send */ |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 1021 | ifd->offset = gigaset_isowbuf_getbytes(ubc->isooutbuf, |
| 1022 | ifd->length); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1023 | if (ifd->offset < 0) { |
| 1024 | if (ifd->offset == -EBUSY) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1025 | gig_dbg(DEBUG_ISO, |
| 1026 | "%s: buffer busy at frame %d", |
| 1027 | __func__, nframe); |
| 1028 | /* tasklet will be restarted from |
| 1029 | gigaset_send_skb() */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1030 | } else { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1031 | dev_err(ucx->bcs->cs->dev, |
| 1032 | "%s: buffer error %d at frame %d\n", |
| 1033 | __func__, ifd->offset, nframe); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1034 | return ifd->offset; |
| 1035 | } |
| 1036 | break; |
| 1037 | } |
| 1038 | ucx->limit = atomic_read(&ubc->isooutbuf->nextread); |
| 1039 | ifd->status = 0; |
| 1040 | ifd->actual_length = 0; |
| 1041 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1042 | if (unlikely(nframe == 0)) |
| 1043 | return 0; /* no data to send */ |
| 1044 | urb->number_of_packets = nframe; |
Tilman Schmidt | 69049cc | 2006-04-10 22:55:16 -0700 | [diff] [blame] | 1045 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1046 | rc = usb_submit_urb(urb, SLAB_ATOMIC); |
| 1047 | if (unlikely(rc)) { |
| 1048 | if (rc == -ENODEV) |
| 1049 | /* device removed - give up silently */ |
| 1050 | gig_dbg(DEBUG_ISO, "%s: disconnected", __func__); |
| 1051 | else |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1052 | dev_err(ucx->bcs->cs->dev, |
| 1053 | "could not submit isochronous write URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1054 | get_usb_rcmsg(rc)); |
| 1055 | return rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1056 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1057 | ++ubc->numsub; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1058 | return nframe; |
| 1059 | } |
| 1060 | |
| 1061 | /* write_iso_tasklet |
| 1062 | * tasklet scheduled when an isochronous output URB from the Gigaset device |
| 1063 | * has completed |
| 1064 | * parameter: |
| 1065 | * data B channel state structure |
| 1066 | */ |
| 1067 | static void write_iso_tasklet(unsigned long data) |
| 1068 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1069 | struct bc_state *bcs = (struct bc_state *) data; |
| 1070 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 1071 | struct cardstate *cs = bcs->cs; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1072 | struct isow_urbctx_t *done, *next, *ovfl; |
| 1073 | struct urb *urb; |
| 1074 | struct usb_iso_packet_descriptor *ifd; |
| 1075 | int offset; |
| 1076 | unsigned long flags; |
| 1077 | int i; |
| 1078 | struct sk_buff *skb; |
| 1079 | int len; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1080 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1081 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1082 | /* loop while completed URBs arrive in time */ |
| 1083 | for (;;) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1084 | if (unlikely(!(atomic_read(&ubc->running)))) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1085 | gig_dbg(DEBUG_ISO, "%s: not running", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1086 | return; |
| 1087 | } |
| 1088 | |
| 1089 | /* retrieve completed URBs */ |
| 1090 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1091 | done = ubc->isooutdone; |
| 1092 | ubc->isooutdone = NULL; |
| 1093 | ovfl = ubc->isooutovfl; |
| 1094 | ubc->isooutovfl = NULL; |
| 1095 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1096 | if (ovfl) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1097 | dev_err(cs->dev, "isochronous write buffer underrun\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1098 | error_hangup(bcs); |
| 1099 | break; |
| 1100 | } |
| 1101 | if (!done) |
| 1102 | break; |
| 1103 | |
| 1104 | /* submit free URB if available */ |
| 1105 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1106 | next = ubc->isooutfree; |
| 1107 | ubc->isooutfree = NULL; |
| 1108 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1109 | if (next) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1110 | rc = submit_iso_write_urb(next); |
| 1111 | if (unlikely(rc <= 0 && rc != -ENODEV)) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1112 | /* could not submit URB, put it back */ |
| 1113 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1114 | if (ubc->isooutfree == NULL) { |
| 1115 | ubc->isooutfree = next; |
| 1116 | next = NULL; |
| 1117 | } |
| 1118 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1119 | if (next) { |
| 1120 | /* couldn't put it back */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1121 | dev_err(cs->dev, |
| 1122 | "losing isochronous write URB\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1123 | error_hangup(bcs); |
| 1124 | } |
| 1125 | } |
| 1126 | } |
| 1127 | |
| 1128 | /* process completed URB */ |
| 1129 | urb = done->urb; |
| 1130 | switch (urb->status) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1131 | case -EXDEV: /* partial completion */ |
| 1132 | gig_dbg(DEBUG_ISO, "%s: URB partially completed", |
| 1133 | __func__); |
| 1134 | /* fall through - what's the difference anyway? */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1135 | case 0: /* normal completion */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1136 | /* inspect individual frames |
| 1137 | * assumptions (for lack of documentation): |
| 1138 | * - actual_length bytes of first frame in error are |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 1139 | * successfully sent |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1140 | * - all following frames are not sent at all |
| 1141 | */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1142 | offset = done->limit; /* default (no error) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1143 | for (i = 0; i < BAS_NUMFRAMES; i++) { |
| 1144 | ifd = &urb->iso_frame_desc[i]; |
| 1145 | if (ifd->status || |
| 1146 | ifd->actual_length != ifd->length) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1147 | dev_warn(cs->dev, |
| 1148 | "isochronous write: frame %d: %s, " |
| 1149 | "only %d of %d bytes sent\n", |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1150 | i, get_usb_statmsg(ifd->status), |
| 1151 | ifd->actual_length, ifd->length); |
| 1152 | offset = (ifd->offset + |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1153 | ifd->actual_length) |
| 1154 | % BAS_OUTBUFSIZE; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1155 | break; |
| 1156 | } |
| 1157 | } |
| 1158 | #ifdef CONFIG_GIGASET_DEBUG |
| 1159 | /* check assumption on remaining frames */ |
| 1160 | for (; i < BAS_NUMFRAMES; i++) { |
| 1161 | ifd = &urb->iso_frame_desc[i]; |
| 1162 | if (ifd->status != -EINPROGRESS |
| 1163 | || ifd->actual_length != 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1164 | dev_warn(cs->dev, |
| 1165 | "isochronous write: frame %d: %s, " |
| 1166 | "%d of %d bytes sent\n", |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1167 | i, get_usb_statmsg(ifd->status), |
| 1168 | ifd->actual_length, ifd->length); |
| 1169 | offset = (ifd->offset + |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1170 | ifd->actual_length) |
| 1171 | % BAS_OUTBUFSIZE; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1172 | break; |
| 1173 | } |
| 1174 | } |
| 1175 | #endif |
| 1176 | break; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1177 | case -EPIPE: /* stall - probably underrun */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1178 | dev_err(cs->dev, "isochronous write stalled\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1179 | error_hangup(bcs); |
| 1180 | break; |
| 1181 | default: /* severe trouble */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1182 | dev_warn(cs->dev, "isochronous write: %s\n", |
| 1183 | get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1184 | } |
| 1185 | |
| 1186 | /* mark the write buffer area covered by this URB as free */ |
| 1187 | if (done->limit >= 0) |
| 1188 | atomic_set(&ubc->isooutbuf->read, done->limit); |
| 1189 | |
| 1190 | /* mark URB as free */ |
| 1191 | spin_lock_irqsave(&ubc->isooutlock, flags); |
| 1192 | next = ubc->isooutfree; |
| 1193 | ubc->isooutfree = done; |
| 1194 | spin_unlock_irqrestore(&ubc->isooutlock, flags); |
| 1195 | if (next) { |
| 1196 | /* only one URB still active - resubmit one */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1197 | rc = submit_iso_write_urb(next); |
| 1198 | if (unlikely(rc <= 0 && rc != -ENODEV)) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1199 | /* couldn't submit */ |
| 1200 | error_hangup(bcs); |
| 1201 | } |
| 1202 | } |
| 1203 | } |
| 1204 | |
| 1205 | /* process queued SKBs */ |
| 1206 | while ((skb = skb_dequeue(&bcs->squeue))) { |
| 1207 | /* copy to output buffer, doing L2 encapsulation */ |
| 1208 | len = skb->len; |
| 1209 | if (gigaset_isoc_buildframe(bcs, skb->data, len) == -EAGAIN) { |
| 1210 | /* insufficient buffer space, push back onto queue */ |
| 1211 | skb_queue_head(&bcs->squeue, skb); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1212 | gig_dbg(DEBUG_ISO, "%s: skb requeued, qlen=%d", |
| 1213 | __func__, skb_queue_len(&bcs->squeue)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1214 | break; |
| 1215 | } |
| 1216 | skb_pull(skb, len); |
| 1217 | gigaset_skb_sent(bcs, skb); |
| 1218 | dev_kfree_skb_any(skb); |
| 1219 | } |
| 1220 | } |
| 1221 | |
| 1222 | /* Isochronous Read - Bottom Half */ |
| 1223 | /* ============================== */ |
| 1224 | |
| 1225 | /* read_iso_tasklet |
| 1226 | * tasklet scheduled when an isochronous input URB from the Gigaset device |
| 1227 | * has completed |
| 1228 | * parameter: |
| 1229 | * data B channel state structure |
| 1230 | */ |
| 1231 | static void read_iso_tasklet(unsigned long data) |
| 1232 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1233 | struct bc_state *bcs = (struct bc_state *) data; |
| 1234 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 1235 | struct cardstate *cs = bcs->cs; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1236 | struct urb *urb; |
| 1237 | char *rcvbuf; |
| 1238 | unsigned long flags; |
| 1239 | int totleft, numbytes, offset, frame, rc; |
| 1240 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1241 | /* loop while more completed URBs arrive in the meantime */ |
| 1242 | for (;;) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1243 | /* retrieve URB */ |
| 1244 | spin_lock_irqsave(&ubc->isoinlock, flags); |
| 1245 | if (!(urb = ubc->isoindone)) { |
| 1246 | spin_unlock_irqrestore(&ubc->isoinlock, flags); |
| 1247 | return; |
| 1248 | } |
| 1249 | ubc->isoindone = NULL; |
| 1250 | if (unlikely(ubc->loststatus != -EINPROGRESS)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1251 | dev_warn(cs->dev, |
| 1252 | "isochronous read overrun, " |
| 1253 | "dropped URB with status: %s, %d bytes lost\n", |
| 1254 | get_usb_statmsg(ubc->loststatus), |
| 1255 | ubc->isoinlost); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1256 | ubc->loststatus = -EINPROGRESS; |
| 1257 | } |
| 1258 | spin_unlock_irqrestore(&ubc->isoinlock, flags); |
| 1259 | |
| 1260 | if (unlikely(!(atomic_read(&ubc->running)))) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1261 | gig_dbg(DEBUG_ISO, |
| 1262 | "%s: channel not running, " |
| 1263 | "dropped URB with status: %s", |
| 1264 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1265 | return; |
| 1266 | } |
| 1267 | |
| 1268 | switch (urb->status) { |
| 1269 | case 0: /* normal completion */ |
| 1270 | break; |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 1271 | case -EXDEV: /* inspect individual frames |
| 1272 | (we do that anyway) */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1273 | gig_dbg(DEBUG_ISO, "%s: URB partially completed", |
| 1274 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1275 | break; |
| 1276 | case -ENOENT: |
| 1277 | case -ECONNRESET: |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1278 | case -EINPROGRESS: |
| 1279 | gig_dbg(DEBUG_ISO, "%s: %s", |
| 1280 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1281 | continue; /* -> skip */ |
| 1282 | case -EPIPE: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1283 | dev_err(cs->dev, "isochronous read stalled\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1284 | error_hangup(bcs); |
| 1285 | continue; /* -> skip */ |
| 1286 | default: /* severe trouble */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1287 | dev_warn(cs->dev, "isochronous read: %s\n", |
| 1288 | get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1289 | goto error; |
| 1290 | } |
| 1291 | |
| 1292 | rcvbuf = urb->transfer_buffer; |
| 1293 | totleft = urb->actual_length; |
| 1294 | for (frame = 0; totleft > 0 && frame < BAS_NUMFRAMES; frame++) { |
| 1295 | if (unlikely(urb->iso_frame_desc[frame].status)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1296 | dev_warn(cs->dev, |
| 1297 | "isochronous read: frame %d: %s\n", |
| 1298 | frame, |
| 1299 | get_usb_statmsg( |
| 1300 | urb->iso_frame_desc[frame].status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1301 | break; |
| 1302 | } |
| 1303 | numbytes = urb->iso_frame_desc[frame].actual_length; |
| 1304 | if (unlikely(numbytes > BAS_MAXFRAME)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1305 | dev_warn(cs->dev, |
| 1306 | "isochronous read: frame %d: " |
| 1307 | "numbytes (%d) > BAS_MAXFRAME\n", |
| 1308 | frame, numbytes); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1309 | break; |
| 1310 | } |
| 1311 | if (unlikely(numbytes > totleft)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1312 | dev_warn(cs->dev, |
| 1313 | "isochronous read: frame %d: " |
| 1314 | "numbytes (%d) > totleft (%d)\n", |
| 1315 | frame, numbytes, totleft); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1316 | break; |
| 1317 | } |
| 1318 | offset = urb->iso_frame_desc[frame].offset; |
| 1319 | if (unlikely(offset + numbytes > BAS_INBUFSIZE)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1320 | dev_warn(cs->dev, |
| 1321 | "isochronous read: frame %d: " |
| 1322 | "offset (%d) + numbytes (%d) " |
| 1323 | "> BAS_INBUFSIZE\n", |
| 1324 | frame, offset, numbytes); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1325 | break; |
| 1326 | } |
| 1327 | gigaset_isoc_receive(rcvbuf + offset, numbytes, bcs); |
| 1328 | totleft -= numbytes; |
| 1329 | } |
| 1330 | if (unlikely(totleft > 0)) |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1331 | dev_warn(cs->dev, |
| 1332 | "isochronous read: %d data bytes missing\n", |
| 1333 | totleft); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1334 | |
| 1335 | error: |
| 1336 | /* URB processed, resubmit */ |
| 1337 | for (frame = 0; frame < BAS_NUMFRAMES; frame++) { |
| 1338 | urb->iso_frame_desc[frame].status = 0; |
| 1339 | urb->iso_frame_desc[frame].actual_length = 0; |
| 1340 | } |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1341 | /* urb->dev is clobbered by USB subsystem */ |
| 1342 | urb->dev = bcs->cs->hw.bas->udev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1343 | urb->transfer_flags = URB_ISO_ASAP; |
| 1344 | urb->number_of_packets = BAS_NUMFRAMES; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1345 | rc = usb_submit_urb(urb, SLAB_ATOMIC); |
| 1346 | if (unlikely(rc != 0 && rc != -ENODEV)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1347 | dev_err(cs->dev, |
| 1348 | "could not resubmit isochronous read URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1349 | get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1350 | dump_urb(DEBUG_ISO, "resubmit iso read", urb); |
| 1351 | error_hangup(bcs); |
| 1352 | } |
| 1353 | } |
| 1354 | } |
| 1355 | |
| 1356 | /* Channel Operations */ |
| 1357 | /* ================== */ |
| 1358 | |
| 1359 | /* req_timeout |
| 1360 | * timeout routine for control output request |
| 1361 | * argument: |
| 1362 | * B channel control structure |
| 1363 | */ |
| 1364 | static void req_timeout(unsigned long data) |
| 1365 | { |
| 1366 | struct bc_state *bcs = (struct bc_state *) data; |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1367 | struct bas_cardstate *ucs = bcs->cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1368 | int pending; |
| 1369 | unsigned long flags; |
| 1370 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1371 | check_pending(ucs); |
| 1372 | |
| 1373 | spin_lock_irqsave(&ucs->lock, flags); |
| 1374 | pending = ucs->pending; |
| 1375 | ucs->pending = 0; |
| 1376 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1377 | |
| 1378 | switch (pending) { |
| 1379 | case 0: /* no pending request */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1380 | gig_dbg(DEBUG_USBREQ, "%s: no request pending", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1381 | break; |
| 1382 | |
| 1383 | case HD_OPEN_ATCHANNEL: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1384 | dev_err(bcs->cs->dev, "timeout opening AT channel\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1385 | error_reset(bcs->cs); |
| 1386 | break; |
| 1387 | |
| 1388 | case HD_OPEN_B2CHANNEL: |
| 1389 | case HD_OPEN_B1CHANNEL: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1390 | dev_err(bcs->cs->dev, "timeout opening channel %d\n", |
| 1391 | bcs->channel + 1); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1392 | error_hangup(bcs); |
| 1393 | break; |
| 1394 | |
| 1395 | case HD_CLOSE_ATCHANNEL: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1396 | dev_err(bcs->cs->dev, "timeout closing AT channel\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1397 | break; |
| 1398 | |
| 1399 | case HD_CLOSE_B2CHANNEL: |
| 1400 | case HD_CLOSE_B1CHANNEL: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1401 | dev_err(bcs->cs->dev, "timeout closing channel %d\n", |
| 1402 | bcs->channel + 1); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1403 | error_reset(bcs->cs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1404 | break; |
| 1405 | |
| 1406 | default: |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1407 | dev_warn(bcs->cs->dev, "request 0x%02x timed out, clearing\n", |
| 1408 | pending); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1409 | } |
| 1410 | } |
| 1411 | |
| 1412 | /* write_ctrl_callback |
| 1413 | * USB completion handler for control pipe output |
| 1414 | * called by the USB subsystem in interrupt context |
| 1415 | * parameter: |
| 1416 | * urb USB request block of completed request |
| 1417 | * urb->context = hardware specific controller state structure |
| 1418 | */ |
| 1419 | static void write_ctrl_callback(struct urb *urb, struct pt_regs *regs) |
| 1420 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1421 | struct bas_cardstate *ucs = urb->context; |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1422 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1423 | unsigned long flags; |
| 1424 | |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1425 | /* check status */ |
| 1426 | switch (urb->status) { |
| 1427 | case 0: /* normal completion */ |
| 1428 | spin_lock_irqsave(&ucs->lock, flags); |
| 1429 | switch (ucs->pending) { |
| 1430 | case HD_DEVICE_INIT_ACK: /* no reply expected */ |
| 1431 | del_timer(&ucs->timer_ctrl); |
| 1432 | ucs->pending = 0; |
| 1433 | break; |
| 1434 | } |
| 1435 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1436 | return; |
| 1437 | |
| 1438 | case -ENOENT: /* cancelled */ |
| 1439 | case -ECONNRESET: /* cancelled (async) */ |
| 1440 | case -EINPROGRESS: /* pending */ |
| 1441 | case -ENODEV: /* device removed */ |
| 1442 | case -ESHUTDOWN: /* device shut down */ |
| 1443 | /* ignore silently */ |
| 1444 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
| 1445 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1446 | break; |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1447 | |
| 1448 | default: /* any failure */ |
| 1449 | if (++ucs->retry_ctrl > BAS_RETRY) { |
| 1450 | dev_err(&ucs->interface->dev, |
| 1451 | "control request 0x%02x failed: %s\n", |
| 1452 | ucs->dr_ctrl.bRequest, |
| 1453 | get_usb_statmsg(urb->status)); |
| 1454 | break; /* give up */ |
| 1455 | } |
| 1456 | dev_notice(&ucs->interface->dev, |
| 1457 | "control request 0x%02x: %s, retry %d\n", |
| 1458 | ucs->dr_ctrl.bRequest, get_usb_statmsg(urb->status), |
| 1459 | ucs->retry_ctrl); |
| 1460 | /* urb->dev is clobbered by USB subsystem */ |
| 1461 | urb->dev = ucs->udev; |
| 1462 | rc = usb_submit_urb(urb, SLAB_ATOMIC); |
| 1463 | if (unlikely(rc)) { |
| 1464 | dev_err(&ucs->interface->dev, |
| 1465 | "could not resubmit request 0x%02x: %s\n", |
| 1466 | ucs->dr_ctrl.bRequest, get_usb_rcmsg(rc)); |
| 1467 | break; |
| 1468 | } |
| 1469 | /* resubmitted */ |
| 1470 | return; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1471 | } |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1472 | |
| 1473 | /* failed, clear pending request */ |
| 1474 | spin_lock_irqsave(&ucs->lock, flags); |
| 1475 | del_timer(&ucs->timer_ctrl); |
| 1476 | ucs->pending = 0; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1477 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1478 | } |
| 1479 | |
| 1480 | /* req_submit |
| 1481 | * submit a control output request without message buffer to the Gigaset base |
| 1482 | * and optionally start a timeout |
| 1483 | * parameters: |
| 1484 | * bcs B channel control structure |
| 1485 | * req control request code (HD_*) |
| 1486 | * val control request parameter value (set to 0 if unused) |
| 1487 | * timeout timeout in seconds (0: no timeout) |
| 1488 | * return value: |
| 1489 | * 0 on success |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1490 | * -EBUSY if another request is pending |
| 1491 | * any URB submission error code |
| 1492 | */ |
| 1493 | static int req_submit(struct bc_state *bcs, int req, int val, int timeout) |
| 1494 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1495 | struct bas_cardstate *ucs = bcs->cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1496 | int ret; |
| 1497 | unsigned long flags; |
| 1498 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1499 | gig_dbg(DEBUG_USBREQ, "-------> 0x%02x (%d)", req, val); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1500 | |
| 1501 | spin_lock_irqsave(&ucs->lock, flags); |
| 1502 | if (ucs->pending) { |
| 1503 | spin_unlock_irqrestore(&ucs->lock, flags); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1504 | dev_err(bcs->cs->dev, |
| 1505 | "submission of request 0x%02x failed: " |
| 1506 | "request 0x%02x still pending\n", |
| 1507 | req, ucs->pending); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1508 | return -EBUSY; |
| 1509 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1510 | |
| 1511 | ucs->dr_ctrl.bRequestType = OUT_VENDOR_REQ; |
| 1512 | ucs->dr_ctrl.bRequest = req; |
| 1513 | ucs->dr_ctrl.wValue = cpu_to_le16(val); |
| 1514 | ucs->dr_ctrl.wIndex = 0; |
| 1515 | ucs->dr_ctrl.wLength = 0; |
| 1516 | usb_fill_control_urb(ucs->urb_ctrl, ucs->udev, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1517 | usb_sndctrlpipe(ucs->udev, 0), |
| 1518 | (unsigned char*) &ucs->dr_ctrl, NULL, 0, |
| 1519 | write_ctrl_callback, ucs); |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1520 | ucs->retry_ctrl = 0; |
| 1521 | ret = usb_submit_urb(ucs->urb_ctrl, SLAB_ATOMIC); |
| 1522 | if (unlikely(ret)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1523 | dev_err(bcs->cs->dev, "could not submit request 0x%02x: %s\n", |
Tilman Schmidt | 06163f8 | 2006-06-26 00:25:33 -0700 | [diff] [blame] | 1524 | req, get_usb_rcmsg(ret)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1525 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1526 | return ret; |
| 1527 | } |
| 1528 | ucs->pending = req; |
| 1529 | |
| 1530 | if (timeout > 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1531 | gig_dbg(DEBUG_USBREQ, "setting timeout of %d/10 secs", timeout); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1532 | ucs->timer_ctrl.expires = jiffies + timeout * HZ / 10; |
| 1533 | ucs->timer_ctrl.data = (unsigned long) bcs; |
| 1534 | ucs->timer_ctrl.function = req_timeout; |
| 1535 | add_timer(&ucs->timer_ctrl); |
| 1536 | } |
| 1537 | |
| 1538 | spin_unlock_irqrestore(&ucs->lock, flags); |
| 1539 | return 0; |
| 1540 | } |
| 1541 | |
| 1542 | /* gigaset_init_bchannel |
| 1543 | * called by common.c to connect a B channel |
| 1544 | * initialize isochronous I/O and tell the Gigaset base to open the channel |
| 1545 | * argument: |
| 1546 | * B channel control structure |
| 1547 | * return value: |
| 1548 | * 0 on success, error code < 0 on error |
| 1549 | */ |
| 1550 | static int gigaset_init_bchannel(struct bc_state *bcs) |
| 1551 | { |
| 1552 | int req, ret; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1553 | unsigned long flags; |
| 1554 | |
| 1555 | spin_lock_irqsave(&bcs->cs->lock, flags); |
| 1556 | if (unlikely(!bcs->cs->connected)) { |
| 1557 | gig_dbg(DEBUG_USBREQ, "%s: not connected", __func__); |
| 1558 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
| 1559 | return -ENODEV; |
| 1560 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1561 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1562 | if ((ret = starturbs(bcs)) < 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1563 | dev_err(bcs->cs->dev, |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1564 | "could not start isochronous I/O for channel B%d: %s\n", |
| 1565 | bcs->channel + 1, |
| 1566 | ret == -EFAULT ? "null URB" : get_usb_rcmsg(ret)); |
| 1567 | if (ret != -ENODEV) |
| 1568 | error_hangup(bcs); |
| 1569 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1570 | return ret; |
| 1571 | } |
| 1572 | |
| 1573 | req = bcs->channel ? HD_OPEN_B2CHANNEL : HD_OPEN_B1CHANNEL; |
| 1574 | if ((ret = req_submit(bcs, req, 0, BAS_TIMEOUT)) < 0) { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1575 | dev_err(bcs->cs->dev, "could not open channel B%d\n", |
| 1576 | bcs->channel + 1); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1577 | stopurbs(bcs->hw.bas); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1578 | if (ret != -ENODEV) |
| 1579 | error_hangup(bcs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1580 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1581 | |
| 1582 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1583 | return ret; |
| 1584 | } |
| 1585 | |
| 1586 | /* gigaset_close_bchannel |
| 1587 | * called by common.c to disconnect a B channel |
| 1588 | * tell the Gigaset base to close the channel |
| 1589 | * stopping isochronous I/O and LL notification will be done when the |
| 1590 | * acknowledgement for the close arrives |
| 1591 | * argument: |
| 1592 | * B channel control structure |
| 1593 | * return value: |
| 1594 | * 0 on success, error code < 0 on error |
| 1595 | */ |
| 1596 | static int gigaset_close_bchannel(struct bc_state *bcs) |
| 1597 | { |
| 1598 | int req, ret; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1599 | unsigned long flags; |
| 1600 | |
| 1601 | spin_lock_irqsave(&bcs->cs->lock, flags); |
| 1602 | if (unlikely(!bcs->cs->connected)) { |
| 1603 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
| 1604 | gig_dbg(DEBUG_USBREQ, "%s: not connected", __func__); |
| 1605 | return -ENODEV; |
| 1606 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1607 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1608 | if (!(atomic_read(&bcs->cs->hw.bas->basstate) & |
| 1609 | (bcs->channel ? BS_B2OPEN : BS_B1OPEN))) { |
| 1610 | /* channel not running: just signal common.c */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1611 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1612 | gigaset_bchannel_down(bcs); |
| 1613 | return 0; |
| 1614 | } |
| 1615 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1616 | /* channel running: tell device to close it */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1617 | req = bcs->channel ? HD_CLOSE_B2CHANNEL : HD_CLOSE_B1CHANNEL; |
| 1618 | if ((ret = req_submit(bcs, req, 0, BAS_TIMEOUT)) < 0) |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1619 | dev_err(bcs->cs->dev, "closing channel B%d failed\n", |
| 1620 | bcs->channel + 1); |
| 1621 | |
| 1622 | spin_unlock_irqrestore(&bcs->cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1623 | return ret; |
| 1624 | } |
| 1625 | |
| 1626 | /* Device Operations */ |
| 1627 | /* ================= */ |
| 1628 | |
| 1629 | /* complete_cb |
| 1630 | * unqueue first command buffer from queue, waking any sleepers |
| 1631 | * must be called with cs->cmdlock held |
| 1632 | * parameter: |
| 1633 | * cs controller state structure |
| 1634 | */ |
| 1635 | static void complete_cb(struct cardstate *cs) |
| 1636 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1637 | struct cmdbuf_t *cb = cs->cmdbuf; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1638 | |
| 1639 | /* unqueue completed buffer */ |
| 1640 | cs->cmdbytes -= cs->curlen; |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1641 | gig_dbg(DEBUG_TRANSCMD|DEBUG_LOCKCMD, |
| 1642 | "write_command: sent %u bytes, %u left", |
| 1643 | cs->curlen, cs->cmdbytes); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1644 | if ((cs->cmdbuf = cb->next) != NULL) { |
| 1645 | cs->cmdbuf->prev = NULL; |
| 1646 | cs->curlen = cs->cmdbuf->len; |
| 1647 | } else { |
| 1648 | cs->lastcmdbuf = NULL; |
| 1649 | cs->curlen = 0; |
| 1650 | } |
| 1651 | |
| 1652 | if (cb->wake_tasklet) |
| 1653 | tasklet_schedule(cb->wake_tasklet); |
| 1654 | |
| 1655 | kfree(cb); |
| 1656 | } |
| 1657 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1658 | /* write_command_callback |
| 1659 | * USB completion handler for AT command transmission |
| 1660 | * called by the USB subsystem in interrupt context |
| 1661 | * parameter: |
| 1662 | * urb USB request block of completed request |
| 1663 | * urb->context = controller state structure |
| 1664 | */ |
| 1665 | static void write_command_callback(struct urb *urb, struct pt_regs *regs) |
| 1666 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1667 | struct cardstate *cs = urb->context; |
| 1668 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1669 | unsigned long flags; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1670 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1671 | update_basstate(ucs, 0, BS_ATWRPEND); |
| 1672 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1673 | /* check status */ |
| 1674 | switch (urb->status) { |
| 1675 | case 0: /* normal completion */ |
| 1676 | break; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1677 | case -ENOENT: /* cancelled */ |
| 1678 | case -ECONNRESET: /* cancelled (async) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1679 | case -EINPROGRESS: /* pending */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1680 | case -ENODEV: /* device removed */ |
| 1681 | case -ESHUTDOWN: /* device shut down */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1682 | /* ignore silently */ |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1683 | gig_dbg(DEBUG_USBREQ, "%s: %s", |
| 1684 | __func__, get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1685 | return; |
| 1686 | default: /* any failure */ |
| 1687 | if (++ucs->retry_cmd_out > BAS_RETRY) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1688 | dev_warn(cs->dev, |
| 1689 | "command write: %s, " |
| 1690 | "giving up after %d retries\n", |
| 1691 | get_usb_statmsg(urb->status), |
| 1692 | ucs->retry_cmd_out); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1693 | break; |
| 1694 | } |
| 1695 | if (cs->cmdbuf == NULL) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1696 | dev_warn(cs->dev, |
| 1697 | "command write: %s, " |
| 1698 | "cannot retry - cmdbuf gone\n", |
| 1699 | get_usb_statmsg(urb->status)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1700 | break; |
| 1701 | } |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1702 | dev_notice(cs->dev, "command write: %s, retry %d\n", |
| 1703 | get_usb_statmsg(urb->status), ucs->retry_cmd_out); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1704 | if (atwrite_submit(cs, cs->cmdbuf->buf, cs->cmdbuf->len) >= 0) |
| 1705 | /* resubmitted - bypass regular exit block */ |
| 1706 | return; |
| 1707 | /* command send failed, assume base still waiting */ |
| 1708 | update_basstate(ucs, BS_ATREADY, 0); |
| 1709 | } |
| 1710 | |
| 1711 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1712 | if (cs->cmdbuf != NULL) |
| 1713 | complete_cb(cs); |
| 1714 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1715 | } |
| 1716 | |
| 1717 | /* atrdy_timeout |
| 1718 | * timeout routine for AT command transmission |
| 1719 | * argument: |
| 1720 | * controller state structure |
| 1721 | */ |
| 1722 | static void atrdy_timeout(unsigned long data) |
| 1723 | { |
| 1724 | struct cardstate *cs = (struct cardstate *) data; |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1725 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1726 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1727 | dev_warn(cs->dev, "timeout waiting for HD_READY_SEND_ATDATA\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1728 | |
| 1729 | /* fake the missing signal - what else can I do? */ |
| 1730 | update_basstate(ucs, BS_ATREADY, BS_ATTIMER); |
| 1731 | start_cbsend(cs); |
| 1732 | } |
| 1733 | |
| 1734 | /* atwrite_submit |
| 1735 | * submit an HD_WRITE_ATMESSAGE command URB |
| 1736 | * parameters: |
| 1737 | * cs controller state structure |
| 1738 | * buf buffer containing command to send |
| 1739 | * len length of command to send |
| 1740 | * return value: |
| 1741 | * 0 on success |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1742 | * -EBUSY if another request is pending |
| 1743 | * any URB submission error code |
| 1744 | */ |
| 1745 | static int atwrite_submit(struct cardstate *cs, unsigned char *buf, int len) |
| 1746 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1747 | struct bas_cardstate *ucs = cs->hw.bas; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1748 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1749 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1750 | gig_dbg(DEBUG_USBREQ, "-------> HD_WRITE_ATMESSAGE (%d)", len); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1751 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1752 | if (update_basstate(ucs, BS_ATWRPEND, 0) & BS_ATWRPEND) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1753 | dev_err(cs->dev, |
| 1754 | "could not submit HD_WRITE_ATMESSAGE: URB busy\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1755 | return -EBUSY; |
| 1756 | } |
| 1757 | |
| 1758 | ucs->dr_cmd_out.bRequestType = OUT_VENDOR_REQ; |
| 1759 | ucs->dr_cmd_out.bRequest = HD_WRITE_ATMESSAGE; |
| 1760 | ucs->dr_cmd_out.wValue = 0; |
| 1761 | ucs->dr_cmd_out.wIndex = 0; |
| 1762 | ucs->dr_cmd_out.wLength = cpu_to_le16(len); |
| 1763 | usb_fill_control_urb(ucs->urb_cmd_out, ucs->udev, |
| 1764 | usb_sndctrlpipe(ucs->udev, 0), |
| 1765 | (unsigned char*) &ucs->dr_cmd_out, buf, len, |
| 1766 | write_command_callback, cs); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1767 | rc = usb_submit_urb(ucs->urb_cmd_out, SLAB_ATOMIC); |
| 1768 | if (unlikely(rc)) { |
| 1769 | update_basstate(ucs, 0, BS_ATWRPEND); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1770 | dev_err(cs->dev, "could not submit HD_WRITE_ATMESSAGE: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1771 | get_usb_rcmsg(rc)); |
| 1772 | return rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1773 | } |
| 1774 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1775 | /* submitted successfully, start timeout if necessary */ |
| 1776 | if (!(update_basstate(ucs, BS_ATTIMER, BS_ATREADY) & BS_ATTIMER)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1777 | gig_dbg(DEBUG_OUTPUT, "setting ATREADY timeout of %d/10 secs", |
| 1778 | ATRDY_TIMEOUT); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1779 | ucs->timer_atrdy.expires = jiffies + ATRDY_TIMEOUT * HZ / 10; |
| 1780 | ucs->timer_atrdy.data = (unsigned long) cs; |
| 1781 | ucs->timer_atrdy.function = atrdy_timeout; |
| 1782 | add_timer(&ucs->timer_atrdy); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1783 | } |
| 1784 | return 0; |
| 1785 | } |
| 1786 | |
| 1787 | /* start_cbsend |
| 1788 | * start transmission of AT command queue if necessary |
| 1789 | * parameter: |
| 1790 | * cs controller state structure |
| 1791 | * return value: |
| 1792 | * 0 on success |
| 1793 | * error code < 0 on error |
| 1794 | */ |
| 1795 | static int start_cbsend(struct cardstate *cs) |
| 1796 | { |
| 1797 | struct cmdbuf_t *cb; |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 1798 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1799 | unsigned long flags; |
| 1800 | int rc; |
| 1801 | int retval = 0; |
| 1802 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1803 | /* check if AT channel is open */ |
| 1804 | if (!(atomic_read(&ucs->basstate) & BS_ATOPEN)) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1805 | gig_dbg(DEBUG_TRANSCMD|DEBUG_LOCKCMD, "AT channel not open"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1806 | rc = req_submit(cs->bcs, HD_OPEN_ATCHANNEL, 0, BAS_TIMEOUT); |
| 1807 | if (rc < 0) { |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1808 | /* flush command queue */ |
| 1809 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1810 | while (cs->cmdbuf != NULL) |
| 1811 | complete_cb(cs); |
| 1812 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1813 | } |
| 1814 | return rc; |
| 1815 | } |
| 1816 | |
| 1817 | /* try to send first command in queue */ |
| 1818 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1819 | |
| 1820 | while ((cb = cs->cmdbuf) != NULL && |
| 1821 | atomic_read(&ucs->basstate) & BS_ATREADY) { |
| 1822 | ucs->retry_cmd_out = 0; |
| 1823 | rc = atwrite_submit(cs, cb->buf, cb->len); |
| 1824 | if (unlikely(rc)) { |
| 1825 | retval = rc; |
| 1826 | complete_cb(cs); |
| 1827 | } |
| 1828 | } |
| 1829 | |
| 1830 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1831 | return retval; |
| 1832 | } |
| 1833 | |
| 1834 | /* gigaset_write_cmd |
| 1835 | * This function is called by the device independent part of the driver |
| 1836 | * to transmit an AT command string to the Gigaset device. |
| 1837 | * It encapsulates the device specific method for transmission over the |
| 1838 | * direct USB connection to the base. |
| 1839 | * The command string is added to the queue of commands to send, and |
| 1840 | * USB transmission is started if necessary. |
| 1841 | * parameters: |
| 1842 | * cs controller state structure |
| 1843 | * buf command string to send |
| 1844 | * len number of bytes to send (max. IF_WRITEBUF) |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 1845 | * wake_tasklet tasklet to run when transmission is completed |
| 1846 | * (NULL if none) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1847 | * return value: |
| 1848 | * number of bytes queued on success |
| 1849 | * error code < 0 on error |
| 1850 | */ |
| 1851 | static int gigaset_write_cmd(struct cardstate *cs, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1852 | const unsigned char *buf, int len, |
| 1853 | struct tasklet_struct *wake_tasklet) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1854 | { |
| 1855 | struct cmdbuf_t *cb; |
| 1856 | unsigned long flags; |
| 1857 | int status; |
| 1858 | |
| 1859 | gigaset_dbg_buffer(atomic_read(&cs->mstate) != MS_LOCKED ? |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1860 | DEBUG_TRANSCMD : DEBUG_LOCKCMD, |
Tilman Schmidt | 0137150 | 2006-04-10 22:55:11 -0700 | [diff] [blame] | 1861 | "CMD Transmit", len, buf); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1862 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1863 | if (len <= 0) |
| 1864 | return 0; /* nothing to do */ |
| 1865 | |
| 1866 | if (len > IF_WRITEBUF) |
| 1867 | len = IF_WRITEBUF; |
| 1868 | if (!(cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC))) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 1869 | dev_err(cs->dev, "%s: out of memory\n", __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1870 | return -ENOMEM; |
| 1871 | } |
| 1872 | |
| 1873 | memcpy(cb->buf, buf, len); |
| 1874 | cb->len = len; |
| 1875 | cb->offset = 0; |
| 1876 | cb->next = NULL; |
| 1877 | cb->wake_tasklet = wake_tasklet; |
| 1878 | |
| 1879 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1880 | cb->prev = cs->lastcmdbuf; |
| 1881 | if (cs->lastcmdbuf) |
| 1882 | cs->lastcmdbuf->next = cb; |
| 1883 | else { |
| 1884 | cs->cmdbuf = cb; |
| 1885 | cs->curlen = len; |
| 1886 | } |
| 1887 | cs->cmdbytes += len; |
| 1888 | cs->lastcmdbuf = cb; |
| 1889 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1890 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1891 | spin_lock_irqsave(&cs->lock, flags); |
| 1892 | if (unlikely(!cs->connected)) { |
| 1893 | spin_unlock_irqrestore(&cs->lock, flags); |
| 1894 | gig_dbg(DEBUG_USBREQ, "%s: not connected", __func__); |
| 1895 | return -ENODEV; |
| 1896 | } |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1897 | status = start_cbsend(cs); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1898 | spin_unlock_irqrestore(&cs->lock, flags); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1899 | return status < 0 ? status : len; |
| 1900 | } |
| 1901 | |
| 1902 | /* gigaset_write_room |
| 1903 | * tty_driver.write_room interface routine |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 1904 | * return number of characters the driver will accept to be written via |
| 1905 | * gigaset_write_cmd |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1906 | * parameter: |
| 1907 | * controller state structure |
| 1908 | * return value: |
| 1909 | * number of characters |
| 1910 | */ |
| 1911 | static int gigaset_write_room(struct cardstate *cs) |
| 1912 | { |
| 1913 | return IF_WRITEBUF; |
| 1914 | } |
| 1915 | |
| 1916 | /* gigaset_chars_in_buffer |
| 1917 | * tty_driver.chars_in_buffer interface routine |
| 1918 | * return number of characters waiting to be sent |
| 1919 | * parameter: |
| 1920 | * controller state structure |
| 1921 | * return value: |
| 1922 | * number of characters |
| 1923 | */ |
| 1924 | static int gigaset_chars_in_buffer(struct cardstate *cs) |
| 1925 | { |
| 1926 | unsigned long flags; |
| 1927 | unsigned bytes; |
| 1928 | |
| 1929 | spin_lock_irqsave(&cs->cmdlock, flags); |
| 1930 | bytes = cs->cmdbytes; |
| 1931 | spin_unlock_irqrestore(&cs->cmdlock, flags); |
| 1932 | |
| 1933 | return bytes; |
| 1934 | } |
| 1935 | |
| 1936 | /* gigaset_brkchars |
| 1937 | * implementation of ioctl(GIGASET_BRKCHARS) |
| 1938 | * parameter: |
| 1939 | * controller state structure |
| 1940 | * return value: |
| 1941 | * -EINVAL (unimplemented function) |
| 1942 | */ |
| 1943 | static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6]) |
| 1944 | { |
| 1945 | return -EINVAL; |
| 1946 | } |
| 1947 | |
| 1948 | |
| 1949 | /* Device Initialization/Shutdown */ |
| 1950 | /* ============================== */ |
| 1951 | |
| 1952 | /* Free hardware dependent part of the B channel structure |
| 1953 | * parameter: |
| 1954 | * bcs B channel structure |
| 1955 | * return value: |
| 1956 | * !=0 on success |
| 1957 | */ |
| 1958 | static int gigaset_freebcshw(struct bc_state *bcs) |
| 1959 | { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1960 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 1961 | int i; |
| 1962 | |
| 1963 | if (!ubc) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1964 | return 0; |
| 1965 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 1966 | /* kill URBs and tasklets before freeing - better safe than sorry */ |
| 1967 | atomic_set(&ubc->running, 0); |
| 1968 | for (i = 0; i < BAS_OUTURBS; ++i) |
| 1969 | if (ubc->isoouturbs[i].urb) { |
| 1970 | gig_dbg(DEBUG_INIT, "%s: killing iso out URB %d", |
| 1971 | __func__, i); |
| 1972 | usb_kill_urb(ubc->isoouturbs[i].urb); |
| 1973 | usb_free_urb(ubc->isoouturbs[i].urb); |
| 1974 | } |
| 1975 | for (i = 0; i < BAS_INURBS; ++i) |
| 1976 | if (ubc->isoinurbs[i]) { |
| 1977 | gig_dbg(DEBUG_INIT, "%s: killing iso in URB %d", |
| 1978 | __func__, i); |
| 1979 | usb_kill_urb(ubc->isoinurbs[i]); |
| 1980 | usb_free_urb(ubc->isoinurbs[i]); |
| 1981 | } |
| 1982 | tasklet_kill(&ubc->sent_tasklet); |
| 1983 | tasklet_kill(&ubc->rcvd_tasklet); |
| 1984 | kfree(ubc->isooutbuf); |
| 1985 | kfree(ubc); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 1986 | bcs->hw.bas = NULL; |
| 1987 | return 1; |
| 1988 | } |
| 1989 | |
| 1990 | /* Initialize hardware dependent part of the B channel structure |
| 1991 | * parameter: |
| 1992 | * bcs B channel structure |
| 1993 | * return value: |
| 1994 | * !=0 on success |
| 1995 | */ |
| 1996 | static int gigaset_initbcshw(struct bc_state *bcs) |
| 1997 | { |
| 1998 | int i; |
| 1999 | struct bas_bc_state *ubc; |
| 2000 | |
| 2001 | bcs->hw.bas = ubc = kmalloc(sizeof(struct bas_bc_state), GFP_KERNEL); |
| 2002 | if (!ubc) { |
| 2003 | err("could not allocate bas_bc_state"); |
| 2004 | return 0; |
| 2005 | } |
| 2006 | |
| 2007 | atomic_set(&ubc->running, 0); |
| 2008 | atomic_set(&ubc->corrbytes, 0); |
| 2009 | spin_lock_init(&ubc->isooutlock); |
| 2010 | for (i = 0; i < BAS_OUTURBS; ++i) { |
| 2011 | ubc->isoouturbs[i].urb = NULL; |
| 2012 | ubc->isoouturbs[i].bcs = bcs; |
| 2013 | } |
| 2014 | ubc->isooutdone = ubc->isooutfree = ubc->isooutovfl = NULL; |
| 2015 | ubc->numsub = 0; |
| 2016 | if (!(ubc->isooutbuf = kmalloc(sizeof(struct isowbuf_t), GFP_KERNEL))) { |
| 2017 | err("could not allocate isochronous output buffer"); |
| 2018 | kfree(ubc); |
| 2019 | bcs->hw.bas = NULL; |
| 2020 | return 0; |
| 2021 | } |
| 2022 | tasklet_init(&ubc->sent_tasklet, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2023 | &write_iso_tasklet, (unsigned long) bcs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2024 | |
| 2025 | spin_lock_init(&ubc->isoinlock); |
| 2026 | for (i = 0; i < BAS_INURBS; ++i) |
| 2027 | ubc->isoinurbs[i] = NULL; |
| 2028 | ubc->isoindone = NULL; |
| 2029 | ubc->loststatus = -EINPROGRESS; |
| 2030 | ubc->isoinlost = 0; |
| 2031 | ubc->seqlen = 0; |
| 2032 | ubc->inbyte = 0; |
| 2033 | ubc->inbits = 0; |
| 2034 | ubc->goodbytes = 0; |
| 2035 | ubc->alignerrs = 0; |
| 2036 | ubc->fcserrs = 0; |
| 2037 | ubc->frameerrs = 0; |
| 2038 | ubc->giants = 0; |
| 2039 | ubc->runts = 0; |
| 2040 | ubc->aborts = 0; |
| 2041 | ubc->shared0s = 0; |
| 2042 | ubc->stolen0s = 0; |
| 2043 | tasklet_init(&ubc->rcvd_tasklet, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2044 | &read_iso_tasklet, (unsigned long) bcs); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2045 | return 1; |
| 2046 | } |
| 2047 | |
| 2048 | static void gigaset_reinitbcshw(struct bc_state *bcs) |
| 2049 | { |
| 2050 | struct bas_bc_state *ubc = bcs->hw.bas; |
| 2051 | |
| 2052 | atomic_set(&bcs->hw.bas->running, 0); |
| 2053 | atomic_set(&bcs->hw.bas->corrbytes, 0); |
| 2054 | bcs->hw.bas->numsub = 0; |
| 2055 | spin_lock_init(&ubc->isooutlock); |
| 2056 | spin_lock_init(&ubc->isoinlock); |
| 2057 | ubc->loststatus = -EINPROGRESS; |
| 2058 | } |
| 2059 | |
| 2060 | static void gigaset_freecshw(struct cardstate *cs) |
| 2061 | { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2062 | /* timers, URBs and rcvbuf are disposed of in disconnect */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2063 | kfree(cs->hw.bas); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2064 | cs->hw.bas = NULL; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2065 | } |
| 2066 | |
| 2067 | static int gigaset_initcshw(struct cardstate *cs) |
| 2068 | { |
| 2069 | struct bas_cardstate *ucs; |
| 2070 | |
| 2071 | cs->hw.bas = ucs = kmalloc(sizeof *ucs, GFP_KERNEL); |
| 2072 | if (!ucs) |
| 2073 | return 0; |
| 2074 | |
| 2075 | ucs->urb_cmd_in = NULL; |
| 2076 | ucs->urb_cmd_out = NULL; |
| 2077 | ucs->rcvbuf = NULL; |
| 2078 | ucs->rcvbuf_size = 0; |
| 2079 | |
| 2080 | spin_lock_init(&ucs->lock); |
| 2081 | ucs->pending = 0; |
| 2082 | |
| 2083 | atomic_set(&ucs->basstate, 0); |
| 2084 | init_timer(&ucs->timer_ctrl); |
| 2085 | init_timer(&ucs->timer_atrdy); |
| 2086 | init_timer(&ucs->timer_cmd_in); |
| 2087 | |
| 2088 | return 1; |
| 2089 | } |
| 2090 | |
| 2091 | /* freeurbs |
| 2092 | * unlink and deallocate all URBs unconditionally |
| 2093 | * caller must make sure that no commands are still in progress |
| 2094 | * parameter: |
| 2095 | * cs controller state structure |
| 2096 | */ |
| 2097 | static void freeurbs(struct cardstate *cs) |
| 2098 | { |
Tilman Schmidt | d48c778 | 2006-04-10 22:55:08 -0700 | [diff] [blame] | 2099 | struct bas_cardstate *ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2100 | struct bas_bc_state *ubc; |
| 2101 | int i, j; |
| 2102 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2103 | for (j = 0; j < 2; ++j) { |
| 2104 | ubc = cs->bcs[j].hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2105 | for (i = 0; i < BAS_OUTURBS; ++i) |
| 2106 | if (ubc->isoouturbs[i].urb) { |
| 2107 | usb_kill_urb(ubc->isoouturbs[i].urb); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2108 | gig_dbg(DEBUG_INIT, |
| 2109 | "%s: isoc output URB %d/%d unlinked", |
| 2110 | __func__, j, i); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2111 | usb_free_urb(ubc->isoouturbs[i].urb); |
| 2112 | ubc->isoouturbs[i].urb = NULL; |
| 2113 | } |
| 2114 | for (i = 0; i < BAS_INURBS; ++i) |
| 2115 | if (ubc->isoinurbs[i]) { |
| 2116 | usb_kill_urb(ubc->isoinurbs[i]); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2117 | gig_dbg(DEBUG_INIT, |
| 2118 | "%s: isoc input URB %d/%d unlinked", |
| 2119 | __func__, j, i); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2120 | usb_free_urb(ubc->isoinurbs[i]); |
| 2121 | ubc->isoinurbs[i] = NULL; |
| 2122 | } |
| 2123 | } |
| 2124 | if (ucs->urb_int_in) { |
| 2125 | usb_kill_urb(ucs->urb_int_in); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2126 | gig_dbg(DEBUG_INIT, "%s: interrupt input URB unlinked", |
| 2127 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2128 | usb_free_urb(ucs->urb_int_in); |
| 2129 | ucs->urb_int_in = NULL; |
| 2130 | } |
| 2131 | if (ucs->urb_cmd_out) { |
| 2132 | usb_kill_urb(ucs->urb_cmd_out); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2133 | gig_dbg(DEBUG_INIT, "%s: command output URB unlinked", |
| 2134 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2135 | usb_free_urb(ucs->urb_cmd_out); |
| 2136 | ucs->urb_cmd_out = NULL; |
| 2137 | } |
| 2138 | if (ucs->urb_cmd_in) { |
| 2139 | usb_kill_urb(ucs->urb_cmd_in); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2140 | gig_dbg(DEBUG_INIT, "%s: command input URB unlinked", |
| 2141 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2142 | usb_free_urb(ucs->urb_cmd_in); |
| 2143 | ucs->urb_cmd_in = NULL; |
| 2144 | } |
| 2145 | if (ucs->urb_ctrl) { |
| 2146 | usb_kill_urb(ucs->urb_ctrl); |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2147 | gig_dbg(DEBUG_INIT, "%s: control output URB unlinked", |
| 2148 | __func__); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2149 | usb_free_urb(ucs->urb_ctrl); |
| 2150 | ucs->urb_ctrl = NULL; |
| 2151 | } |
| 2152 | } |
| 2153 | |
| 2154 | /* gigaset_probe |
| 2155 | * This function is called when a new USB device is connected. |
| 2156 | * It checks whether the new device is handled by this driver. |
| 2157 | */ |
| 2158 | static int gigaset_probe(struct usb_interface *interface, |
| 2159 | const struct usb_device_id *id) |
| 2160 | { |
| 2161 | struct usb_host_interface *hostif; |
| 2162 | struct usb_device *udev = interface_to_usbdev(interface); |
| 2163 | struct cardstate *cs = NULL; |
| 2164 | struct bas_cardstate *ucs = NULL; |
| 2165 | struct bas_bc_state *ubc; |
| 2166 | struct usb_endpoint_descriptor *endpoint; |
| 2167 | int i, j; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2168 | int rc; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2169 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2170 | gig_dbg(DEBUG_ANY, |
| 2171 | "%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)", |
| 2172 | __func__, le16_to_cpu(udev->descriptor.idVendor), |
| 2173 | le16_to_cpu(udev->descriptor.idProduct)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2174 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2175 | /* set required alternate setting */ |
| 2176 | hostif = interface->cur_altsetting; |
| 2177 | if (hostif->desc.bAlternateSetting != 3) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2178 | gig_dbg(DEBUG_ANY, |
| 2179 | "%s: wrong alternate setting %d - trying to switch", |
| 2180 | __func__, hostif->desc.bAlternateSetting); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2181 | if (usb_set_interface(udev, hostif->desc.bInterfaceNumber, 3) < 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2182 | dev_warn(&udev->dev, "usb_set_interface failed, " |
| 2183 | "device %d interface %d altsetting %d\n", |
| 2184 | udev->devnum, hostif->desc.bInterfaceNumber, |
| 2185 | hostif->desc.bAlternateSetting); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2186 | return -ENODEV; |
| 2187 | } |
| 2188 | hostif = interface->cur_altsetting; |
| 2189 | } |
| 2190 | |
| 2191 | /* Reject application specific interfaces |
| 2192 | */ |
| 2193 | if (hostif->desc.bInterfaceClass != 255) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2194 | dev_warn(&udev->dev, "%s: bInterfaceClass == %d\n", |
| 2195 | __func__, hostif->desc.bInterfaceClass); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2196 | return -ENODEV; |
| 2197 | } |
| 2198 | |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2199 | dev_info(&udev->dev, |
| 2200 | "%s: Device matched (Vendor: 0x%x, Product: 0x%x)\n", |
| 2201 | __func__, le16_to_cpu(udev->descriptor.idVendor), |
| 2202 | le16_to_cpu(udev->descriptor.idProduct)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2203 | |
| 2204 | cs = gigaset_getunassignedcs(driver); |
| 2205 | if (!cs) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2206 | dev_err(&udev->dev, "no free cardstate\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2207 | return -ENODEV; |
| 2208 | } |
| 2209 | ucs = cs->hw.bas; |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2210 | |
| 2211 | /* save off device structure ptrs for later use */ |
| 2212 | usb_get_dev(udev); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2213 | ucs->udev = udev; |
| 2214 | ucs->interface = interface; |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2215 | cs->dev = &interface->dev; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2216 | |
| 2217 | /* allocate URBs: |
| 2218 | * - one for the interrupt pipe |
| 2219 | * - three for the different uses of the default control pipe |
| 2220 | * - three for each isochronous pipe |
| 2221 | */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2222 | if (!(ucs->urb_int_in = usb_alloc_urb(0, SLAB_KERNEL)) || |
| 2223 | !(ucs->urb_cmd_in = usb_alloc_urb(0, SLAB_KERNEL)) || |
| 2224 | !(ucs->urb_cmd_out = usb_alloc_urb(0, SLAB_KERNEL)) || |
| 2225 | !(ucs->urb_ctrl = usb_alloc_urb(0, SLAB_KERNEL))) |
| 2226 | goto allocerr; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2227 | |
| 2228 | for (j = 0; j < 2; ++j) { |
| 2229 | ubc = cs->bcs[j].hw.bas; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2230 | for (i = 0; i < BAS_OUTURBS; ++i) |
| 2231 | if (!(ubc->isoouturbs[i].urb = |
| 2232 | usb_alloc_urb(BAS_NUMFRAMES, SLAB_KERNEL))) |
| 2233 | goto allocerr; |
| 2234 | for (i = 0; i < BAS_INURBS; ++i) |
| 2235 | if (!(ubc->isoinurbs[i] = |
| 2236 | usb_alloc_urb(BAS_NUMFRAMES, SLAB_KERNEL))) |
| 2237 | goto allocerr; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2238 | } |
| 2239 | |
| 2240 | ucs->rcvbuf = NULL; |
| 2241 | ucs->rcvbuf_size = 0; |
| 2242 | |
| 2243 | /* Fill the interrupt urb and send it to the core */ |
| 2244 | endpoint = &hostif->endpoint[0].desc; |
| 2245 | usb_fill_int_urb(ucs->urb_int_in, udev, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2246 | usb_rcvintpipe(udev, |
| 2247 | (endpoint->bEndpointAddress) & 0x0f), |
| 2248 | ucs->int_in_buf, 3, read_int_callback, cs, |
| 2249 | endpoint->bInterval); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2250 | if ((rc = usb_submit_urb(ucs->urb_int_in, SLAB_KERNEL)) != 0) { |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2251 | dev_err(cs->dev, "could not submit interrupt URB: %s\n", |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2252 | get_usb_rcmsg(rc)); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2253 | goto error; |
| 2254 | } |
| 2255 | |
| 2256 | /* tell the device that the driver is ready */ |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2257 | 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] | 2258 | goto error; |
| 2259 | |
| 2260 | /* tell common part that the device is ready */ |
| 2261 | if (startmode == SM_LOCKED) |
| 2262 | atomic_set(&cs->mstate, MS_LOCKED); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2263 | |
| 2264 | /* save address of controller structure */ |
| 2265 | usb_set_intfdata(interface, cs); |
| 2266 | |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2267 | if (!gigaset_start(cs)) |
| 2268 | goto error; |
| 2269 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2270 | return 0; |
| 2271 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2272 | allocerr: |
| 2273 | dev_err(cs->dev, "could not allocate URBs\n"); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2274 | error: |
| 2275 | freeurbs(cs); |
Tilman Schmidt | 69049cc | 2006-04-10 22:55:16 -0700 | [diff] [blame] | 2276 | usb_set_intfdata(interface, NULL); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2277 | gigaset_unassign(cs); |
| 2278 | return -ENODEV; |
| 2279 | } |
| 2280 | |
| 2281 | /* gigaset_disconnect |
| 2282 | * This function is called when the Gigaset base is unplugged. |
| 2283 | */ |
| 2284 | static void gigaset_disconnect(struct usb_interface *interface) |
| 2285 | { |
| 2286 | struct cardstate *cs; |
| 2287 | struct bas_cardstate *ucs; |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2288 | int j; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2289 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2290 | cs = usb_get_intfdata(interface); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2291 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2292 | ucs = cs->hw.bas; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2293 | |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2294 | dev_info(cs->dev, "disconnecting Gigaset base\n"); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2295 | |
| 2296 | /* mark base as not ready, all channels disconnected */ |
| 2297 | atomic_set(&ucs->basstate, 0); |
| 2298 | |
| 2299 | /* tell LL all channels are down */ |
| 2300 | //FIXME shouldn't gigaset_stop() do this? |
| 2301 | for (j = 0; j < 2; ++j) |
| 2302 | gigaset_bchannel_down(cs->bcs + j); |
| 2303 | |
| 2304 | /* stop driver (common part) */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2305 | gigaset_stop(cs); |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2306 | |
| 2307 | /* stop timers and URBs, free ressources */ |
| 2308 | del_timer_sync(&ucs->timer_ctrl); |
| 2309 | del_timer_sync(&ucs->timer_atrdy); |
| 2310 | del_timer_sync(&ucs->timer_cmd_in); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2311 | freeurbs(cs); |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2312 | usb_set_intfdata(interface, NULL); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2313 | kfree(ucs->rcvbuf); |
| 2314 | ucs->rcvbuf = NULL; |
| 2315 | ucs->rcvbuf_size = 0; |
Tilman Schmidt | b1d4746 | 2006-04-10 22:55:07 -0700 | [diff] [blame] | 2316 | usb_put_dev(ucs->udev); |
| 2317 | ucs->interface = NULL; |
| 2318 | ucs->udev = NULL; |
| 2319 | cs->dev = NULL; |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2320 | gigaset_unassign(cs); |
| 2321 | } |
| 2322 | |
| 2323 | static struct gigaset_ops gigops = { |
| 2324 | gigaset_write_cmd, |
| 2325 | gigaset_write_room, |
| 2326 | gigaset_chars_in_buffer, |
| 2327 | gigaset_brkchars, |
| 2328 | gigaset_init_bchannel, |
| 2329 | gigaset_close_bchannel, |
| 2330 | gigaset_initbcshw, |
| 2331 | gigaset_freebcshw, |
| 2332 | gigaset_reinitbcshw, |
| 2333 | gigaset_initcshw, |
| 2334 | gigaset_freecshw, |
| 2335 | gigaset_set_modem_ctrl, |
| 2336 | gigaset_baud_rate, |
| 2337 | gigaset_set_line_ctrl, |
| 2338 | gigaset_isoc_send_skb, |
| 2339 | gigaset_isoc_input, |
| 2340 | }; |
| 2341 | |
| 2342 | /* bas_gigaset_init |
| 2343 | * This function is called after the kernel module is loaded. |
| 2344 | */ |
| 2345 | static int __init bas_gigaset_init(void) |
| 2346 | { |
| 2347 | int result; |
| 2348 | |
| 2349 | /* allocate memory for our driver state and intialize it */ |
| 2350 | if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2351 | GIGASET_MODULENAME, GIGASET_DEVNAME, |
| 2352 | GIGASET_DEVFSNAME, &gigops, |
| 2353 | THIS_MODULE)) == NULL) |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2354 | goto error; |
| 2355 | |
| 2356 | /* allocate memory for our device state and intialize it */ |
Tilman Schmidt | 917f508 | 2006-04-10 22:55:00 -0700 | [diff] [blame] | 2357 | cardstate = gigaset_initcs(driver, 2, 0, 0, cidmode, |
| 2358 | GIGASET_MODULENAME); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2359 | if (!cardstate) |
| 2360 | goto error; |
| 2361 | |
| 2362 | /* register this driver with the USB subsystem */ |
| 2363 | result = usb_register(&gigaset_usb_driver); |
| 2364 | if (result < 0) { |
| 2365 | err("usb_register failed (error %d)", -result); |
| 2366 | goto error; |
| 2367 | } |
| 2368 | |
| 2369 | info(DRIVER_AUTHOR); |
| 2370 | info(DRIVER_DESC); |
| 2371 | return 0; |
| 2372 | |
| 2373 | error: if (cardstate) |
| 2374 | gigaset_freecs(cardstate); |
| 2375 | cardstate = NULL; |
| 2376 | if (driver) |
| 2377 | gigaset_freedriver(driver); |
| 2378 | driver = NULL; |
| 2379 | return -1; |
| 2380 | } |
| 2381 | |
| 2382 | /* bas_gigaset_exit |
| 2383 | * This function is called before the kernel module is unloaded. |
| 2384 | */ |
| 2385 | static void __exit bas_gigaset_exit(void) |
| 2386 | { |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2387 | struct bas_cardstate *ucs = cardstate->hw.bas; |
| 2388 | |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2389 | gigaset_blockdriver(driver); /* => probe will fail |
Tilman Schmidt | 784d585 | 2006-04-10 22:55:04 -0700 | [diff] [blame] | 2390 | * => no gigaset_start any more |
| 2391 | */ |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2392 | |
| 2393 | gigaset_shutdown(cardstate); |
| 2394 | /* from now on, no isdn callback should be possible */ |
| 2395 | |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2396 | /* close all still open channels */ |
| 2397 | if (atomic_read(&ucs->basstate) & BS_B1OPEN) { |
| 2398 | gig_dbg(DEBUG_INIT, "closing B1 channel"); |
| 2399 | usb_control_msg(ucs->udev, usb_sndctrlpipe(ucs->udev, 0), |
| 2400 | HD_CLOSE_B1CHANNEL, OUT_VENDOR_REQ, 0, 0, |
| 2401 | NULL, 0, BAS_TIMEOUT); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2402 | } |
Tilman Schmidt | 73a8881 | 2006-04-22 02:35:30 -0700 | [diff] [blame] | 2403 | if (atomic_read(&ucs->basstate) & BS_B2OPEN) { |
| 2404 | gig_dbg(DEBUG_INIT, "closing B2 channel"); |
| 2405 | usb_control_msg(ucs->udev, usb_sndctrlpipe(ucs->udev, 0), |
| 2406 | HD_CLOSE_B2CHANNEL, OUT_VENDOR_REQ, 0, 0, |
| 2407 | NULL, 0, BAS_TIMEOUT); |
| 2408 | } |
| 2409 | if (atomic_read(&ucs->basstate) & BS_ATOPEN) { |
| 2410 | gig_dbg(DEBUG_INIT, "closing AT channel"); |
| 2411 | usb_control_msg(ucs->udev, usb_sndctrlpipe(ucs->udev, 0), |
| 2412 | HD_CLOSE_ATCHANNEL, OUT_VENDOR_REQ, 0, 0, |
| 2413 | NULL, 0, BAS_TIMEOUT); |
| 2414 | } |
| 2415 | atomic_set(&ucs->basstate, 0); |
Hansjoerg Lipp | cf7776d | 2006-03-26 01:38:34 -0800 | [diff] [blame] | 2416 | |
| 2417 | /* deregister this driver with the USB subsystem */ |
| 2418 | usb_deregister(&gigaset_usb_driver); |
| 2419 | /* this will call the disconnect-callback */ |
| 2420 | /* from now on, no disconnect/probe callback should be running */ |
| 2421 | |
| 2422 | gigaset_freecs(cardstate); |
| 2423 | cardstate = NULL; |
| 2424 | gigaset_freedriver(driver); |
| 2425 | driver = NULL; |
| 2426 | } |
| 2427 | |
| 2428 | |
| 2429 | module_init(bas_gigaset_init); |
| 2430 | module_exit(bas_gigaset_exit); |
| 2431 | |
| 2432 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 2433 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 2434 | MODULE_LICENSE("GPL"); |